Trailing device for tractor

Abstract

The utility model discloses a towing device for a tractor, which belongs to the technical field of tractors and comprises a fixing plate and a connecting sleeve, a mounting plate is fixedly mounted on the side wall of the fixing plate, a support table is fixedly mounted on the other side wall of the fixing plate, and an oil guide component is arranged on the inner wall of the bottom surface of the support table; according to the utility model, through the arrangement of the oil guide assembly, after the ejector rod and the convex block are extruded, the lifting plate can descend, and lubricating oil in the extruded liquid storage bag drips onto the fixed column from the liquid dropping head through the liquid outlet pipe and flows to a gap between the connecting sleeve and the fixed column under the action of the oil guide groove; and by dropwise adding lubricating oil to the connecting position, on one hand, abrasion to the connecting position can be reduced, the service life of the towing device is prolonged, on the other hand, the lubricating oil plays a role in lubricating the connecting position, the towing device is convenient to disassemble, and the practicability of the towing device is improved. And the use efficiency of the towing device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractors, and in particular relates to a towing device for a tractor. Background Art

[0002] A tractor is a self-propelled power machine used to tow and drive operating machinery to complete various mobile operations. It can also be used as a fixed operating power. It is composed of engine, transmission, travel, steering, hydraulic suspension, power output, electrical instruments, driving control and traction systems or devices.

[0003] A Chinese patent discloses a tractor towing device (CN211000797U), comprising a first fixing plate, a second fixing plate on both sides of the first fixing plate, a vertical groove on the inner side of the second fixing plate, a plurality of Z-shaped grooves on the front of the inner wall of the vertical groove, a slider in each vertical groove, and the sliders are connected to the first fixing plate. Two parallel third fixing plates are fixedly installed in front of the first fixing plate, a first through hole is provided on the top surface of the upper third fixing plate, a second through hole is provided on the top surface of the lower third fixing plate, the first through hole and the second through hole pass through the same bolt, and a fixing device is fixedly installed on the second fixing plate. When the device is adjusted in height, the user only needs to move the first fixing plate by hand, and the adjustment method is simple. The structure of the device is simple and convenient for manufacturers to manufacture. Most of the current towing devices are exposed to the outside, so they will rust over time, which is not convenient for disassembly, maintenance and replacement of the towing device in the later stage. At the same time, due to lack of lubrication, the towing device will produce certain wear when it is active, which reduces the service life of the towing device. For this purpose, a tractor towing device is provided. Utility Model Content

[0004] The utility model aims to solve the problem that the current towing device is inconvenient to disassemble and assemble as the use time increases, and proposes a towing device for a tractor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a towing device for a tractor, comprising a fixing plate and a connecting sleeve, a mounting plate is fixedly mounted on the side wall of the fixing plate, a support platform is fixedly mounted on the other side wall of the fixing plate, a fixing column is fixedly mounted on the upper surface of the support platform, an oil guide assembly is arranged on the inner wall of the bottom surface of the support platform, and a mounting assembly is arranged on the other side wall of the fixing plate;

[0006] The oil guide assembly comprises a lifting plate, a telescopic spring and a liquid storage bag are fixedly mounted on the lower surface of the lifting plate, and one end of the telescopic spring and the lower surface of the liquid storage bag are fixedly connected to the inner wall of the bottom surface of the support platform.

[0007] As a further description of the above technical solution:

[0008] A liquid outlet pipe is connected and installed on the side wall of the liquid storage bag, one end of the liquid outlet pipe penetrates the interior of the fixed plate and extends to the outside of the other side wall of the fixed plate, and a drip head is fixedly installed on the lower surface of the liquid outlet pipe.

[0009] As a further description of the above technical solution:

[0010] A protrusion, a torsion spring and a limit block are fixedly installed on the upper surface of the lifting plate, a rotating disk is fixedly installed on one end of the torsion spring, a limit sleeve and a push rod are fixedly installed on the lower surface of the rotating disk, and the inner surface of the limit sleeve is slidably connected to the outer surface of the limit block.

[0011] As a further description of the above technical solution:

[0012] One end of the push rod is in contact with the upper surface of the lifting plate, a driving block is fixedly installed on the upper surface of the rotating disk, a travel groove is arranged on the upper surface of the support platform, one end of the driving block passes through the upper surface of the travel groove, and friction teeth are arranged on the upper surface of the driving block.

[0013] As a further description of the above technical solution:

[0014] The outer surface of the fixed column is provided with an oil guide groove, the outer surface of the fixed column is fixedly mounted with a shock absorbing balloon, the connecting sleeve is sleeved on the outside of the fixed column, and the inner wall of the connecting sleeve contacts the outer surface of the shock absorbing balloon.

[0015] As a further description of the above technical solution:

[0016] The mounting assembly includes a positioning spring, one end of which is fixedly connected to the other side wall of the fixing plate, the other end of the positioning spring is fixedly installed with a fixing ring, a positioning column is fixedly installed on the inner wall of the fixing ring, one end of the positioning column extends to the outside of the side wall of the fixing plate and is fixedly installed with a pulling disk, a positioning hole is provided on the inner wall of the fixing column, and the positioning column is adapted in size to the positioning hole.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0018] 1. In the utility model, an oil guide assembly is provided. When the connecting sleeve rotates, the driving block drives the rotating disk to rotate under the action of the friction teeth. At this time, the rotating disk drives the push rod to rotate synchronously. When the push rod and the convex block are squeezed, the lifting plate will descend, thereby squeezing the liquid storage bag. The lubricating oil inside the liquid storage bag after being squeezed drips from the drip head to the fixed column through the liquid outlet pipe, and then flows to the gap between the connecting sleeve and the fixed column under the action of the oil guide groove. Under the action of the torsion spring, the rotating disk will return to its original position. Therefore, small amounts of dripping can be performed multiple times. By dripping lubricating oil to the connection, on the one hand, the wear of the connection can be reduced and the service life of the trailer can be increased. On the other hand, the lubricating oil plays a lubricating role at the connection, which is convenient for disassembling the trailer and improves the use efficiency of the trailer.

[0019] 2. In the utility model, by providing an installation assembly and a shock-absorbing balloon, the positioning column is pulled toward the side wall of the fixed plate through a pulling disk, and then the connecting sleeve is sleeved on the outer surface of the fixing column. The shock-absorbing balloon fills the gap between the connecting sleeve and the fixing column. After the connecting sleeve moves to the bottom of the positioning hole, the positioning spring, under the action of the fixing ring, causes the positioning column to pass through the positioning hole on the fixing column, thereby limiting the connecting sleeve under the action of the positioning column. The connecting sleeve is connected to the towing vehicle. When the tractor moves, the connecting sleeve will shake and rotate on the outer surface of the fixing column. During the shaking process, the shock-absorbing balloon can reduce the impact between the connecting sleeve and the fixing column, thereby improving the protection of the connection of the towing device. At the same time, the structure is simple, which is convenient for the installation and disassembly of the towing device, and then convenient for the maintenance of the towing device in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a towing device for a tractor.

[0021] Figure 2 The present invention is a schematic diagram of the internal structure of a towing device for a tractor.

[0022] Figure 3 A tractor trailer Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 4 The present invention is a schematic diagram of the three-dimensional structure of a support platform in a towing device for a tractor.

[0024] Legend:

[0025] 1. Fixed plate; 2. Mounting plate; 3. Support platform; 4. Connecting sleeve; 5. Fixed column; 6. Oil guide assembly; 61. Lifting plate; 62. Telescopic spring; 63. Liquid storage bag; 64. Liquid outlet pipe; 65. Bump; 66. Push rod; 67. Torsion spring; 68. Limit block; 69. Rotating disk; 610. Limit sleeve; 611. Drive block; 7. Mounting assembly; 71. Positioning spring; 72. Fixed ring; 73. Positioning column; 8. Shock-absorbing balloon; 9. Travel groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-4 The utility model provides a technical solution: a towing device for a tractor, comprising a fixing plate 1 and a connecting sleeve 4, a mounting plate 2 is fixedly mounted on the side wall of the fixing plate 1, a supporting platform 3 is fixedly mounted on the other side wall of the fixing plate 1, a fixing column 5 is fixedly mounted on the upper surface of the supporting platform 3, an oil guide assembly 6 is arranged on the inner wall of the bottom surface of the supporting platform 3, and a mounting assembly 7 is arranged on the other side wall of the fixing plate 1;

[0028] The oil guide assembly 6 includes a lifting plate 61, on the lower surface of which a telescopic spring 62 and a liquid storage bag 63 are fixedly installed, one end of the telescopic spring 62 and the lower surface of the liquid storage bag 63 are fixedly connected to the inner wall of the bottom surface of the support platform 3, and a liquid outlet pipe 64 is installed on the side wall of the liquid storage bag 63, one end of the liquid outlet pipe 64 passes through the interior of the fixed plate 1 and extends to the outside of the other side wall of the fixed plate 1, and a drip head is fixedly installed on the lower surface of the liquid outlet pipe 64, and a protrusion 65, a torsion spring 67 and a limit block 68 are fixedly installed on the upper surface of the lifting plate 61, and a rotating disk 69 is fixedly installed on one end of the torsion spring 67, and the lower surface of the rotating disk 69 A limit sleeve 610 and a push rod 66 are fixedly installed, the inner surface of the limit sleeve 610 is slidably connected to the outer surface of the limit block 68, one end of the push rod 66 is in contact with the upper surface of the lifting plate 61, a driving block 611 is fixedly installed on the upper surface of the rotating disk 69, a travel groove 9 is provided on the upper surface of the support platform 3, one end of the driving block 611 passes through the outer surface of the travel groove 9, and friction teeth are provided on the upper surface of the driving block 611. An oil guide groove is provided on the outer surface of the fixed column 5, a shock-absorbing balloon 8 is fixedly installed on the outer surface of the fixed column 5, and the connecting sleeve 4 is sleeved on the outside of the fixed column 5, and the inner wall of the connecting sleeve 4 contacts the outer surface of the shock-absorbing balloon 8.

[0029] The specific implementation method is as follows: when the connecting sleeve 4 rotates, under the action of the friction teeth, the driving block 611 will drive the rotating disk 69 to rotate, and at this time the rotating disk 69 will drive the push rod 66 to rotate synchronously. When the push rod 66 and the protrusion 65 are squeezed, the lifting plate 61 will descend, thereby squeezing the liquid storage capsule 63. The lubricating oil inside the liquid storage capsule 63 after being squeezed will drip from the drip head to the fixed column 5 through the liquid outlet pipe 64, and then flow to the gap between the connecting sleeve 4 and the fixed column 5 under the action of the oil guide groove. Under the action of the torsion spring 67, the rotating disk 69 will be restored to its original position, so small amounts of dripping can be performed multiple times.

[0030] The mounting assembly 7 includes a positioning spring 71, one end of which is fixedly connected to the other side wall of the fixing plate 1, and the other end of the positioning spring 71 is fixedly installed with a fixing ring 72, and a positioning column 73 is fixedly installed on the inner wall of the fixing ring 72, one end of the positioning column 73 extends to the outside of the side wall of the fixing plate 1 and is fixedly installed with a pulling disk, and a positioning hole is provided on the inner wall of the fixing column 5, and the positioning column 73 is adapted to the size of the positioning hole.

[0031] The specific implementation method is as follows: the mounting plate 2 is fixed to the tractor by bolts, so that the support platform 3 is fixed to the tractor under the action of the fixing plate 1, the positioning column 73 is pulled toward the side wall of the fixing plate 1 by the pulling disk, and then the connecting sleeve 4 is sleeved on the outer surface of the fixing column 5, and the shock-absorbing balloon 8 fills the gap between the connecting sleeve 4 and the fixing column 5. After the connecting sleeve 4 moves to the bottom of the positioning hole, the positioning spring 71, under the action of the fixing ring 72, makes the positioning column 73 pass through the positioning hole on the fixing column 5, so that the connecting sleeve 4 is limited under the action of the positioning column 73, and the connecting sleeve 4 is connected to the tow truck. When the tractor moves, the connecting sleeve 4 will shake and rotate on the outer surface of the fixing column 5. During the shaking process, the shock-absorbing balloon 8 can reduce the impact between the connecting sleeve 4 and the fixing column 5.

[0032] Working principle: The mounting plate 2 is fixed to the tractor by bolts, so that the support platform 3 is fixed to the tractor under the action of the fixing plate 1, and the positioning column 73 is pulled toward the side wall of the fixing plate 1 by the pulling plate, and then the connecting sleeve 4 is sleeved on the outer surface of the fixing column 5, and the shock-absorbing balloon 8 fills the gap between the connecting sleeve 4 and the fixing column 5. After the connecting sleeve 4 moves to the bottom of the positioning hole, the positioning spring 71, under the action of the fixing ring 72, makes the positioning column 73 pass through the positioning hole on the fixing column 5, so that the connecting sleeve 4 is limited under the action of the positioning column 73, and the connecting sleeve 4 is connected to the towing vehicle. When the tractor moves, the connecting sleeve 4 will shake and rotate on the outer surface of the fixing column 5. During the process, the shock-absorbing balloon 8 can reduce the impact between the connecting sleeve 4 and the fixed column 5. When the connecting sleeve 4 rotates, under the action of the friction teeth, the driving block 611 will drive the rotating disk 69 to rotate. At this time, the rotating disk 69 will drive the push rod 66 to rotate synchronously. When the push rod 66 and the protrusion 65 are squeezed, the lifting plate 61 will descend, thereby squeezing the liquid storage capsule 63. The lubricating oil inside the liquid storage capsule 63 after being squeezed drips from the drip head to the fixed column 5 through the liquid outlet pipe 64, and then flows to the gap between the connecting sleeve 4 and the fixed column 5 under the action of the oil guide groove. The rotating disk 69 will be restored to its original position under the action of the torsion spring 67, so small amounts and multiple dripping can be performed.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tractor towing device, comprising a fixing plate (1) and a connecting sleeve (4), characterized in that: A mounting plate (2) is fixedly mounted on the side wall of the fixing plate (1), a support platform (3) is fixedly mounted on the other side wall of the fixing plate (1), a fixing column (5) is fixedly mounted on the upper surface of the support platform (3), an oil guide assembly (6) is arranged on the inner wall of the bottom surface of the support platform (3), and a mounting assembly (7) is arranged on the other side wall of the fixing plate (1); The oil guide assembly (6) comprises a lifting plate (61), a telescopic spring (62) and a liquid storage bag (63) are fixedly mounted on the lower surface of the lifting plate (61), and one end of the telescopic spring (62) and the lower surface of the liquid storage bag (63) are both fixedly connected to the inner wall of the bottom surface of the support platform (3).

2. A tractor trailer according to claim 1, characterized in that: A liquid outlet pipe (64) is connected and installed on the side wall of the liquid storage bag (63), one end of the liquid outlet pipe (64) passes through the interior of the fixed plate (1) and extends to the outside of the other side wall of the fixed plate (1), and a drip head is fixedly installed on the lower surface of the liquid outlet pipe (64).

3. A tractor trailer according to claim 2, characterized in that: A protrusion (65), a torsion spring (67) and a limit block (68) are fixedly mounted on the upper surface of the lifting plate (61); a rotating disk (69) is fixedly mounted on one end of the torsion spring (67); a limit sleeve (610) and a push rod (66) are fixedly mounted on the lower surface of the rotating disk (69); and the inner surface of the limit sleeve (610) is slidably connected to the outer surface of the limit block (68).

4. A tractor trailer according to claim 3, characterized in that: One end of the push rod (66) is in contact with the upper surface of the lifting plate (61); a driving block (611) is fixedly mounted on the upper surface of the rotating disk (69); a travel groove (9) is provided on the upper surface of the support platform (3); one end of the driving block (611) passes through the upper surface of the travel groove (9); and friction teeth are provided on the upper surface of the driving block (611).

5. A tractor trailer according to claim 4, characterized in that: The outer surface of the fixed column (5) is provided with an oil guide groove, the outer surface of the fixed column (5) is fixedly mounted with a shock absorbing balloon (8), the connecting sleeve (4) is sleeved on the outside of the fixed column (5), and the inner wall of the connecting sleeve (4) is in contact with the outer surface of the shock absorbing balloon (8).

6. A tractor trailer according to claim 5, characterized in that: The mounting assembly (7) comprises a positioning spring (71), one end of which is fixedly connected to the other side wall of the fixing plate (1), the other end of which is fixedly mounted with a fixing ring (72), a positioning column (73) being fixedly mounted on the inner wall of the fixing ring (72), one end of which extends to the outside of the side wall of the fixing plate (1) and is fixedly mounted with a pulling disk, a positioning hole being arranged on the inner wall of the fixing column (5), and the positioning column (73) being adapted in size to the positioning hole.

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