A latch device (12) for a hydraulic valve (10) is proposed. The latch device (12) comprises a housing (22) and a latch shaft (26), which is supported such that it can move in the housing (22). In order to create a latch device (12), independent of the hydraulic provisioning, the provision of at leas
A latch device (12) for a hydraulic valve (10) is proposed. The latch device (12) comprises a housing (22) and a latch shaft (26), which is supported such that it can move in the housing (22). In order to create a latch device (12), independent of the hydraulic provisioning, the provision of at least one magnetizable ring beam arrangement (38), which is supported on the latch shaft (26), and an electric solenoid arrangement (40), located on the housing (22) around the ring beam arrangement (38) is also proposed, wherein by the supply of current to the solenoid arrangement (40), a positioning force can be produced on the ring beam arrangement (38). Furthermore, a hydraulic valve (10) with the corresponding latch device (12) and a hydraulic arrangement (92) for such a valve (10) are also proposed.
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1. A latch device for a hydraulic valve, the latch device comprising: a housing having a first housing wall and a second housing wall;a latch shaft movable within the housing;a magnetizable ring beam arrangement that is coupled to the latch shaft between the first housing wall and the second housing
1. A latch device for a hydraulic valve, the latch device comprising: a housing having a first housing wall and a second housing wall;a latch shaft movable within the housing;a magnetizable ring beam arrangement that is coupled to the latch shaft between the first housing wall and the second housing wall, the magnetizable ring beam arrangement comprising: a first ferromagnetic-adjusting ring,a first retention ring positioned on a first side of the magnetizable ring beam arrangement and securing the first ferromagnetic-adjusting ring axially around the latch shaft,a second ferromagnetic-adjusting ring,a second retention ring positioned on a second side of the magnetizable ring beam arrangement that is opposite to the first side and securing the second ferromagnetic-adjusting ring axially around the latch shaft, anda tension element positioned between the first ferromagnetic-adjusting ring and the second ferromagnetic-adjusting ring; andan electrical solenoid arrangement positioned within the housing and coaxially around the magnetizable ring beam arrangement, wherein the electrical solenoid arrangement is configured to: (i) receive a first electrical signal and responsively generate a first positioning force on the magnetizable ring beam arrangement configured to cause the magnetizable ring beam arrangement to move, in a first direction, into a first deflection position at which the magnetizable ring beam arrangement contacts the first housing wall and the tension element is uncompressed, (ii) receive a second electrical signal and responsively generate a second positioning force on the magnetizable ring beam arrangement configured to cause the magnetizable ring beam arrangement to move, in a second direction, into a second deflection position at which the magnetizable ring beam arrangement contacts the second housing wall and the tension element is uncompressed, the second direction being opposite to the first direction, and (iii) receive a third electrical signal and responsively generate a third positioning force on the magnetizable ring beam arrangement configured to cause the magnetizable ring beam arrangement to move in the first direction past the first deflection position and into a third deflection position at which the magnetizable ring beam arrangement contacts the first housing wall and the tension element is compressed. 2. The latch device of claim 1, wherein the magnetizable ring beam arrangement is positioned coaxially around the latch shaft and configured to move the latch shaft along a longitudinal axis of the latch device in response to a positioning force. 3. The latch device of claim 1, further comprising an adjustment spring arrangement coupled to the latch shaft for exerting a force on the latch shaft configured to move the latch shaft into a neutral position that is between the first deflection position and the second deflection position, wherein a longitudinal center of the magnetizable ring beam arrangement is in alignment with a longitudinal center of the electrical solenoid arrangement in the neutral position. 4. The latch device of claim 1, wherein the electrical solenoid arrangement comprises a first solenoid and a second solenoid positioned symmetrically about a longitudinal center of the electrical solenoid arrangement. 5. The latch device of claim 4, wherein the latch shaft and the magnetizable ring beam arrangement are movable into (i) the first deflection position in response to a larger electrical signal being supplied to the first solenoid than the second solenoid, (ii) the second deflection position in response to the larger electrical signal being supplied to the second solenoid than the first solenoid, and (iii) a neutral position in response to no electrical signal being supplied to the first solenoid and the second solenoid. 6. The latch device of claim 1, further comprising a mechanical latch including: at least one latch ball positioned on a circumference of the latch shaft;an annular groove formed into the latch shaft; anda control element configured to apply a force to the at least one latch ball for pushing the at least one latch ball into the annular groove. 7. The latch device of claim 6, wherein the mechanical latch is configured to lock the latch shaft in the third deflection position. 8. The latch device of claim 1, wherein the latch device is coupled to the hydraulic valve, the hydraulic valve included within a hydraulic system comprising: an actuation lever coupled to the hydraulic valve;a hydraulic consumer hydraulically coupled to the hydraulic valve;a hydraulic pump coupled to the hydraulic valve;a sensor coupled to the hydraulic consumer or the hydraulic valve and configured to transmit a sensor signal; andan electronic control unit coupled to the hydraulic valve and the sensor, the electronic control unit configured to receive the sensor signal from the sensor and operate the hydraulic valve based on the sensor signal. 9. The latch device of claim 8, wherein the sensor is a pressure sensor coupled to the hydraulic consumer and configured to detect a pressure in the hydraulic consumer, and wherein the electronic control unit is configured to interrupt an electrical signal to the electrical solenoid arrangement in response to determining that the pressure in the hydraulic consumer exceeds a threshold. 10. The latch device of claim 9, wherein the latch device is configured to move the latch shaft into a neutral position between the first deflection position and the second deflection position in response to the interruption in the electrical signal. 11. The latch device of claim 8, wherein the sensor is coupled to the hydraulic valve and configured to detect a position of the latch shaft, and wherein the electronic control unit is configured to determine an electrical signal to transmit to the electrical solenoid arrangement based on the position of the latch shaft. 12. The latch device of claim 1, wherein the latch device is included in a hydraulic valve of a hydraulic system comprising an input device coupled to an electronic control unit, wherein the input device is configured to transmit an input signal and the electronic control unit is configured to receive the input signal from the input device and operate the hydraulic valve based on the input signal. 13. A system comprising: a hydraulic valve including: a latch shaft movable within a housing of the hydraulic valve;a magnetizable ring beam arrangement that is coupled to the latch shaft between a first housing wall and a second housing wall, the magnetizable ring beam arrangement comprising a first ferromagnetic-adjusting ring, a second ferromagnetic-adjusting ring, and a tension element positioned between the first ferromagnetic-adjusting ring and the second ferromagnetic-adjusting ring; andan electrical solenoid arrangement positioned within the housing and coaxially around the magnetizable ring beam arrangement, wherein the electrical solenoid arrangement is configured to: (i) receive a first electrical signal and responsively generate a first positioning force on the magnetizable ring beam arrangement configured to cause the magnetizable ring beam arrangement to move, in a first direction, into a first deflection position at which the magnetizable ring beam arrangement contacts the first housing wall and the tension element is uncompressed, (ii) receive a second electrical signal and responsively generate a second positioning force on the magnetizable ring beam arrangement configured to cause the magnetizable ring beam arrangement to move, in a second direction, into a second deflection position at which the magnetizable ring beam arrangement contacts the second housing wall and the tension element is uncompressed, the second direction being opposite to the first direction, and (iii) receive a third electrical signal and responsively generate a third positioning force on the magnetizable ring beam arrangement configured to cause the magnetizable ring beam arrangement to move in the first direction past the first deflection position and into a third deflection position at which the magnetizable ring beam arrangement contacts the first housing wall and the tension element is compressed;an input device configured to transmit input signals; anda control unit coupled to the hydraulic valve and the input device, the control unit configured to receive the input signals from the input device and operate the hydraulic valve based on the input signals, wherein the control unit is configured to cause the hydraulic valve to enter (i) the first deflection position in response to a first input signal from the input device, (ii) the second deflection position in response to a second input signal from the input device,and (iii) the third deflection position in response to a third input signal from the input device. 14. The system of claim 13, wherein the magnetizable ring beam arrangement is positioned coaxially around the latch shaft and configured to move the latch shaft along a longitudinal axis of the hydraulic valve in response to a positioning force, and further comprising an adjustment spring arrangement coupled to the latch shaft for exerting a force on the latch shaft configured to move the latch shaft into a neutral position that is between the first deflection position and the second deflection position, wherein a longitudinal center of the magnetizable ring beam arrangement is in alignment with a longitudinal center of the electrical solenoid arrangement in the neutral position. 15. The system of claim 13, wherein the electrical solenoid arrangement comprises a first solenoid and a second solenoid positioned symmetrically about a longitudinal center of the electrical solenoid arrangement, and wherein the latch shaft and the magnetizable ring beam arrangement are movable (i) in the first direction toward the first solenoid into the first deflection position, and (ii) in the second direction toward the second solenoid into the second deflection position. 16. The system of claim 15, wherein the latch shaft and the magnetizable ring beam arrangement are movable into (i) the first deflection position in response to a larger electrical signal being supplied to the first solenoid than the second solenoid, (ii) the second deflection position in response to the larger electrical signal being supplied to the second solenoid than the first solenoid, and (iii) a neutral position in response to no electrical signal being supplied to the first solenoid and the second solenoid. 17. The system of claim 13, wherein the magnetizable ring beam arrangement comprises: at least two retention rings, a first retention ring of the at least two retention rings being positioned on a first side of the magnetizable ring beam arrangement and securing the first ferromagnetic-adjusting ring axially around the latch shaft, and a second retention ring of the at least two retention rings being positioned on a second side of the magnetizable ring beam arrangement that is opposite to the first side and securing the second ferromagnetic-adjusting ring axially around the latch shaft;wherein the tension element is configured to push the first ferromagnetic-adjusting ring against the first retention ring and the second ferromagnetic-adjusting ring against the second retention ring. 18. The system of claim 13, wherein the hydraulic valve further comprises a mechanical latch including: at least one latch ball positioned on a circumference of the latch shaft;an annular groove formed into the latch shaft; anda control element configured to apply a force to the at least one latch ball for pushing the at least one latch ball into the annular groove. 19. The system of claim 13, further comprising: an actuation lever coupled to the hydraulic valve;a hydraulic consumer hydraulically coupled to the hydraulic valve;a hydraulic pump coupled to the hydraulic valve; anda sensor coupled to the hydraulic consumer or the hydraulic valve and configured to transmit a sensor signal;wherein the control unit is coupled to the hydraulic valve, the sensor, and the input device, and the control unit is configured to receive the sensor signal from the sensor and operate the hydraulic valve based on the sensor signal.
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이 특허에 인용된 특허 (5)
Nordstrom, Robert Scott; Stephens, Kirt Nathaniel; Flynn, Edward Aloysius, Electrohydraulic valve having a solenoid actuator plunger with an armature and a bearing.
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