Quick change device for skid-steer loader

Abstract

The utility model belongs to the technical field of loader accessories, and particularly discloses a quick change device for a sliding steering loader, which comprises a support, a first connecting plate and a second connecting plate are fixedly connected to two sides of the support, locking devices are symmetrically arranged on two sides of the support, each locking device comprises a wrench, a sliding shaft, a connecting rod device and a guide pipe, and the guide pipes are fixedly connected to the support. The wrench is rotatably connected to the support, one end of the connecting rod device is hinged to the wrench, the other end of the connecting rod device is hinged to the sliding shaft, and the sliding shaft is connected to the guide pipe in an up-down sliding mode and can penetrate out and be inserted into a machine tool of the skid loader. The first connecting plate is arranged on one side of the second connecting plate, a third connecting plate is arranged on the other side of the second connecting plate, a first hole set used for being connected with a rotating bucket oil cylinder is formed in the first connecting plate and the second connecting plate in a penetrating mode, and a second hole set used for being connected with a working arm is formed in the second connecting plate and the third connecting plate in a penetrating mode. And therefore, the stability of connecting the working arm and the rotating bucket oil cylinder is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of loader accessories, in particular to a quick-change device for a skid-steer loader. Background Art

[0002] At present, the existing quick-change structures of skid loader on the market have two structures: single-sided support and double-sided support at the hinge of the working arm. Double-sided support can provide better force and stability, but due to the limited arrangement range of the locking device, the existing double-sided support structure, the two sets of rear mounting holes and wrench limiters mostly use the same plate, which has high requirements for processing accuracy and strength, and the spacing between the outermost support plates is wider than the connection between the bracket and the machine; or the locking device is arranged between the front mounting plane of the bracket and the hinge hole of the bucket cylinder, resulting in the distance between the two sets of hinge points of the bracket and the front mounting plane, affecting stability and complicated structure. Utility Model Content

[0003] In view of the problems in the prior art that the quick-change device of a skid steer loader has a complex structure and its strength and stability need to be improved, a quick-change device for a skid steer loader is proposed. The utility model provides the following technical solutions:

[0004] A quick-change device for a skid-steer loader, which is arranged at the front side of the skid-steer loader, comprises a bracket, both sides of which are fixedly connected with a first connecting plate for connecting a bucket oil cylinder and a second connecting plate for connecting a working arm, locking devices are symmetrically arranged on both sides of the bracket, the locking device comprises a wrench, a sliding shaft, a connecting rod device, and a guide tube, the guide tube is fixedly connected to the bracket, the wrench is rotatably connected to the bracket, one end of the connecting rod device is hinged to the wrench, and the other end is hinged to the sliding shaft, the sliding shaft is slidably connected to the guide tube up and down, and the sliding shaft can be operated to pass through the guide tube and be plugged and installed on the tool of the skid-steer loader;

[0005] The first connecting plate is arranged on one side of the second connecting plate, and the third connecting plate is arranged on the other side of the second connecting plate. A first hole group for connecting the bucket cylinder is arranged through the first connecting plate and the second connecting plate, and a second hole group for connecting the working arm is arranged through the second connecting plate and the third connecting plate.

[0006] Preferably, the first hole group is arranged in the middle of the first connecting plate and the upper part of the second connecting plate, and the second hole group is arranged in the lower part of the second connecting plate and the middle part of the third connecting plate.

[0007] Preferably, the guide tube is arranged between the second connecting plate and the third connecting plate.

[0008] Preferably, a rotation limiting plate for abutting against the rotated wrench is also fixedly connected to the bracket, and the rotation limiting plate is arranged between the guide tube and the third connecting plate.

[0009] Preferably, a reinforcement cover plate is connected between the second connection plate and the third connection plate, and the reinforcement cover plate is arranged on the outside of the guide tube.

[0010] Preferably, the upper end of the reinforced cover plate is fixedly connected to the bottom of the rotation limiting plate.

[0011] Preferably, the second hole group is arranged on the outer side of the reinforcement cover plate.

[0012] Preferably, the wrench comprises a handle portion and a rotating rod portion, the handle portion and the rotating rod portion are connected in an L-shape, and the connecting rod device is hinged to the rotating rod portion.

[0013] Preferably, the connecting rod device comprises a spring, both ends of the spring are movably connected with spring seats, and the connecting rod device is respectively hinged to the rotating rod part and the sliding shaft through the spring seats.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The first connecting plate is arranged on one side of the second connecting plate, and the third connecting plate is arranged on the other side of the second connecting plate. The first connecting plate and the second connecting plate are provided with a first hole group for connecting the working arm, and the second connecting plate and the third connecting plate are provided with a second hole group for connecting the bucket cylinder; double-sided double-plate support is realized, thereby effectively improving the stability of connecting the working arm and the bucket cylinder;

[0016] 2. The wrench is rotatably connected to the bracket, one end of the connecting rod device is hinged to the wrench, and the other end is hinged to the sliding shaft. The sliding shaft is slidably connected to the guide tube up and down. The sliding shaft can be operated to pass through the guide tube and be plugged and installed on the machine, thereby realizing rapid assembly, and vice versa, it can be quickly disassembled, and the operation is convenient;

[0017] 3. A reinforcing cover plate is connected between the second connecting plate and the third connecting plate to form a box-type structure to enhance the structural stability of the second connecting plate and the third connecting plate. The reinforcing cover plate is arranged on the outside of the guide tube to protect the guide tube and the sliding shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the disassembled structure of the utility model;

[0019] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0020] In the accompanying drawings, 1, bracket; 11, support plate; 111, mounting plate; 12, round tube; 2, locking device; 21, wrench; 211, handle portion; 212, rotating rod portion; 22, connecting rod device; 221, spring seat; 222, spring; 23, sliding shaft; 24, guide tube; 31, first connecting plate; 32, second connecting plate; 33, third connecting plate; 4, rotation limit plate; 5, first hole group; 6, second hole group; 7, cover plate. DETAILED DESCRIPTION

[0021] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0022] like Figure 1 and Figure 2 As shown, a quick-change device for a skid steer loader is arranged at the front side of the skid steer loader, including a bracket 1, both sides of which are fixedly connected with a first connecting plate 31 for connecting a bucket cylinder and a second connecting plate 32 for connecting the bucket cylinder and a working arm, locking devices 2 are symmetrically arranged on both sides of the bracket 1, the locking device 2 includes a wrench 21, a sliding shaft 23, a connecting rod device 22, and a guide tube 24, the guide tube 24 is fixedly connected to the bracket 1, the wrench 21 is rotatably connected to the bracket 1, one end of the connecting rod device 22 is hinged to the wrench 21, and the other end is hinged to the sliding shaft 23, the sliding shaft 23 is slidably connected to the guide tube 24 up and down, the sliding shaft 23 can be operated to pass through the guide tube 24 and be plugged and installed on the tool of the skid loader, thereby realizing rapid assembly, and vice versa, it can be quickly disassembled.

[0023] The first connecting plate 31 is arranged on one side of the second connecting plate 32, and the third connecting plate 33 is arranged on the other side of the second connecting plate 32. The first connecting plate 31 and the second connecting plate 32 are provided with a first hole group 5 for connecting the bucket cylinder, and the second connecting plate 32 and the third connecting plate 33 are provided with a second hole group 6 for connecting the working arm; double-sided double-plate support is realized, thereby effectively improving the stability of connecting the working arm and the bucket cylinder.

[0024] Specifically, the bracket 1 includes a support plate 11 symmetrically arranged on the left and right and a circular tube 12 connected between the two support plates 11, the locking devices 2 are respectively arranged on the support plates 11 on both sides, and the circular tubes 12 on both sides are provided with a first connecting plate 31, a second connecting plate 32 and a third connecting plate 33; the bottom of the support plate 11 extends forward to form a mounting plate 111, the guide tube 24 is installed on the mounting plate 111, and the mounting plate 111 is provided with a through hole communicating with the guide tube 24.

[0025] Further, the first hole group 5 is arranged in the middle of the first connecting plate 31 and the upper part of the second connecting plate 32, and the second hole group 6 is arranged in the lower part of the second connecting plate 32 and the middle part of the third connecting plate 33. The guide tube 24 is arranged between the second connecting plate 32 and the third connecting plate 33.

[0026] Furthermore, a rotation limiting plate 4 for abutting against the rotated wrench 21 is fixedly connected to the bracket 1 , and the rotation limiting plate 4 is arranged between the guide tube 24 and the third connecting plate 33 .

[0027] Furthermore, a reinforcing cover plate 7 is connected between the second connecting plate 32 and the third connecting plate 33 to form a box-type structure to enhance the structural stability of the second connecting plate 32 and the third connecting plate 33. The reinforcing cover plate 7 is covered on the outside of the guide tube 24 to protect the guide tube 24 and the sliding shaft 23.

[0028] Furthermore, the upper end of the reinforcing cover plate 7 is fixedly connected to the bottom of the rotation limiting plate 4 , thereby enhancing the structural strength of the rotation limiting plate 4 .

[0029] Furthermore, the second hole group 6 is arranged on the outside of the reinforcing cover plate 7 to leave space for the working arm hinge. The distance from the working arm hinge point to the front mounting plane of the bracket 1 is not limited by the locking device 2, thereby effectively ensuring stability.

[0030] Furthermore, the wrench 21 includes a handle portion 211 and a rotating rod portion 212, the handle portion 211 and the rotating rod portion 212 are connected in an L-shape, an arc-shaped transition is adopted between the handle portion 211 and the rotating rod portion 212, and the handle portion 211 is rotatably connected to the bracket 1 at the arc-shaped transition portion, the connecting rod device 22 is hinged to the rotating rod portion 212, and the handle portion 211 is longer than the rotating rod portion 212, so as to achieve labor-saving wrenching through the lever principle.

[0031] Furthermore, the connecting rod device 22 includes a spring 222, and both ends of the spring 222 are movably connected with spring seats 221. The connecting rod device 22 is respectively hinged to the rotating rod portion 212 and the sliding shaft 23 through the spring seats 221, which can achieve elastic deformation and movable hinge. At the same time, the tensile force of the spring 222 can be used to make the sliding shaft 23 move downward, thereby maintaining the connection with the machine.

[0032] Working principle: This device is arranged at the front side of the skid steer loader. The skid steer loader is equipped with a tool, and the tool is provided with an assembly hole. After turning the wrench 21, the connecting rod device 22 pushes the sliding shaft 23, so that the sliding shaft 23 slides in the guide tube 24. When the sliding shaft 23 slides downward and extends out of the guide tube 24, it can be inserted into the assembly hole on the tool to achieve rapid assembly. At this time, if Figure 1As shown in the locking device 2 on the left, the axis of the connecting rod device 22 coincides with the axis of the sliding shaft 23, the rotating rod portion 212 faces downward, and the handle portion 211 is nearly horizontal and abuts against the rotation limit plate 4; on the contrary, when the wrench 21 is pulled, the sliding shaft 23 can be separated from the assembly hole, thereby realizing quick disassembly. In this process, Figure 1 As shown in the locking device 2 on the right, the rotating rod portion 212 is close to horizontal and the handle portion 211 is facing upward; during the turning process, the rotation limit plate 4 on the side of the wrench 21 can mechanically limit the rotation range of the wrench 21 to prevent the wrench 21 from rotating in a circle and causing the tool to disengage.

Claims

1. A quick-change device for a skid steer loader, arranged at the front side of the skid steer loader, comprising a bracket (1), both sides of which are fixedly connected with a first connecting plate (31) for connecting to a bucket cylinder and a second connecting plate (32) for connecting to a working arm, characterized in that: The bracket (1) is symmetrically provided with locking devices (2), the locking devices (2) comprising a wrench (21), a sliding shaft (23), a connecting rod device (22), and a guide tube (24), the guide tube (24) being fixedly connected to the bracket (1), the wrench (21) being rotatably connected to the bracket (1), one end of the connecting rod device (22) being hinged to the wrench (21), and the other end being hinged to the sliding shaft (23), the sliding shaft (23) being slidably connected to the guide tube (24) up and down, and the sliding shaft (23) being operable to pass through the guide tube (24) and be plugged and installed on the implement of the skid loader; The first connecting plate (31) is arranged on one side of the second connecting plate (32), and a third connecting plate (33) is arranged on the other side of the second connecting plate (32); a first hole group (5) for connecting to a bucket cylinder is provided through the first connecting plate (31) and the second connecting plate (32), and a second hole group (6) for connecting to a working arm is provided through the second connecting plate (32) and the third connecting plate (33).

2. The quick-change device for a skid steer loader according to claim 1, characterized in that: The first hole group (5) is arranged at the middle of the first connecting plate (31) and the upper part of the second connecting plate (32), and the second hole group (6) is arranged at the lower part of the second connecting plate (32) and the middle part of the third connecting plate (33).

3. The quick-change device for a skid steer loader according to claim 1, characterized in that: The guide tube (24) is arranged between the second connecting plate (32) and the third connecting plate (33).

4. The quick-change device for a skid steer loader according to claim 1 or 3, characterized in that: The bracket (1) is also fixedly connected with a rotation limit plate (4) for abutting against the rotated wrench (21), and the rotation limit plate (4) is arranged between the guide tube (24) and the third connecting plate (33).

5. The quick-change device for a skid steer loader according to claim 4, characterized in that: A reinforcement cover plate (7) is connected between the second connection plate (32) and the third connection plate (33), and the reinforcement cover plate (7) is arranged to cover the outside of the guide tube (24).

6. The quick-change device for a skid steer loader according to claim 5, characterized in that: The upper end of the reinforced cover plate (7) is fixedly connected to the bottom of the rotation limiting plate (4).

7. The quick-change device for a skid steer loader according to claim 5, characterized in that: The second hole group (6) is arranged on the outer side of the reinforced cover plate (7).

8. The quick-change device for a skid steer loader according to claim 1, characterized in that: The wrench (21) comprises a handle portion (211) and a rotating rod portion (212); the handle portion (211) and the rotating rod portion (212) are connected in an L-shape; and the connecting rod device (22) is hinged to the rotating rod portion (212).

9. The quick-change device for a skid steer loader according to claim 8, characterized in that: The connecting rod device (22) comprises a spring (222), both ends of the spring (222) are movably connected to spring seats (221), and the connecting rod device (22) is respectively hinged to the rotating rod portion (212) and the sliding shaft (23) through the spring seats (221).

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