A working machine (10) includes a body (11) having a front end (12) and a rear end (13), and a ground engaging propulsion structure (15) whereby the machine (10) may be driven over the ground, a loading arm assembly (25) which includes a loading arm (26) which is mounted at one end (26a) relative to
A working machine (10) includes a body (11) having a front end (12) and a rear end (13), and a ground engaging propulsion structure (15) whereby the machine (10) may be driven over the ground, a loading arm assembly (25) which includes a loading arm (26) which is mounted at one end (26a) relative to the body (11) and which extends forwardly at or towards one side of the body (11), beyond the front end (12) of the body (11), to a second end (26b) where there is amounting for a working implement (35), the loading arm assembly (25) including a first link (28) which is pivotally connected at or adjacent the one end (26a) of the loading arm (26) and also to the body (11) at a first mounting position (27), and a second link (32) which is pivotally connected to the arm (26) between the first and second ends (26a, 26b) of the arm (26), and to the body at a second mounting position (36) which is forwards of the first mounting position (27), and the machine (10) including an actuator (40) which acts between the loading arm (26) and the body (11) to raise and lower the loading arm (26) relative to the body (11).
대표청구항▼
1. A working machine which includes a body having a front end and a rear end, the body being provided with a ground engaging propulsion structure including a pair of wheels or a continuous loop track at either side of the body, and steering is effected by differentially driving the ground engaging p
1. A working machine which includes a body having a front end and a rear end, the body being provided with a ground engaging propulsion structure including a pair of wheels or a continuous loop track at either side of the body, and steering is effected by differentially driving the ground engaging propulsion structure, the ground engaging structure defining a skid steer loading machine, whereby the machine may be driven over the ground, a loading arm assembly which includes a single loading arm which is mounted at one end relative to the body and which extends forwardly at or towards one side of the body, beyond the front end of the body, to a second end where there is a mounting for a working implement, the loading arm assembly including a mounting structure for mounting the loading arm to the body, the mounting structure including a first link which is pivotally connected at or adjacent the one end of the loading arm and also to the body at a first mounting position, and a second link which is pivotally connected to the arm between the first and second ends of the arm and to the body at a second mounting position which is forwards of the first mounting position, and the machine including an actuator which acts between the loading arm and the body to raise and lower the loading arm relative to the body, the first link of the mounting structure of the loading arm assembly including a first leg which provides for pivotal mounting to the body at the first mounting position, and a second leg which provides for the pivotal mounting to the loading arm at or adjacent the one end of the loading arm, the first and second legs subtending an obtuse angle between them with an apex of the obtuse angle pointing forwardly of the machine, wherein the apex pointing forwardly of the machine overlaps the loading arm when the loading arm is in a fully lowered position, the machine including a cab mounted on the body towards a second side of the body opposite to a first side of the body where the loading arm extends. 2. A machine according to claim 1 wherein the geometry of the first and second links and their positions of pivotal connection to the body and the arm provides that as the arm is raised and lowered, the second end of the loading arm, where the working implement is in use mounted, moves generally vertically up and down when the machine is generally level. 3. A machine according to claim 1 wherein the actuator is a linearly extendible actuator which is pivotally mounted at one end to the loading arm and at the other end, to the body. 4. A machine according to claim 3 wherein the actuator is pivotally mounted to the arm between where the first and second links are pivotally mounted to the loading arm. 5. A machine according to claim 3 wherein the actuator is pivotally mounted at a second end to the body between the first and second mounting positions. 6. A machine according to claim 1 wherein the first link provides for a shorter distance between its pivotal connections to the loading arm and the first mounting position of the body than the distance afforded by the second link between its pivotal connections to the loading arm and the second mounting position of the body. 7. A machine according to claim 1 wherein the cab is mounted at the front end of the body so that no part of the body extends significantly forwardly of the cab. 8. A machine according to claim 1 wherein the single loading arm of the loading arm assembly, at the second end of the arm, includes a transverse member which provides support for mounting of the working implement at the second end of the loading arm. 9. A machine according to claim 1 wherein the second link is straight between its pivotal mountings to the loading arm and the second mounting position of the body. 10. A machine according to claim 1 wherein the first leg of the first link defines a first link plate and the second leg of the first link defines a second link plate, the first and second leg joined together as a unitary component. 11. A machine according to claim 1, wherein the first and second legs of the first link form an elbow shape so that a middle portion of the first link does not overlap an imaginary straight line connecting the first mounting position and a third mounting position where the second leg is pivotally mounted to the loading arm. 12. A working machine comprising: a body having a front end and a rear end, the body being provided with a ground engaging propulsion structure including a pair of wheels or a continuous loop track at either side of the body, and steering is effected by differentially driving the ground engaging propulsion structure, the ground engaging structure defining a skid steer loading machine, whereby the machine may be driven over the ground;a loading arm assembly which includes a single loading arm which is mounted at one end relative to the body and which extends forwardly at or towards one side of the body, beyond the front end of the body, to a second end where there is a mounting for a working implement, the loading arm assembly including a mounting structure for mounting the loading arm to the body, the mounting structure including a first link which is pivotally connected at or adjacent the one end of the loading arm and also to the body at a first mounting position, and a second link which is pivotally connected to the arm between the first and second ends of the arm and to the body at a second mounting position which is forwards of the first mounting position;an actuator which acts between the loading arm and the body to raise and lower the loading arm relative to the body;the first link of the mounting structure of the loading arm assembly including a first leg which provides for pivotal mounting to the body at the first mounting position, and a second leg which provides for the pivotal mounting to the loading arm at or adjacent the one end of the loading arm, the first and second legs subtending an obtuse angle between them with an apex of the obtuse angle pointing forwardly of the machine, wherein the apex pointing forwardly of the machine overlaps the loading arm when the loading arm is in a fully lowered position; anda cab mounted on the body, the cab being offset from a center of the body towards a second side of the body opposite to a first side of the body where the loading arm extends.
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이 특허에 인용된 특허 (8)
Lonnie D. Hoechst ; Charles H. Krause, Extended reach vertical lift boom.
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