Quick connecting device for tractor lifting function test board

Abstract

The utility model relates to a quick connecting device for a tractor lifting function test board, which comprises a fixed seat connected with a lifting slide block seat and a loading plate hinged to the fixed seat, the two ends of the loading plate are connected with loading connecting blocks through connecting pieces respectively, and a plurality of adjusting holes matched with the connecting pieces are symmetrically formed in the loading plate; two lug plates are symmetrically arranged on the loading connecting block, a sliding sleeve is arranged on one of the lug plates, a limiting shaft is arranged in the sliding sleeve in a sliding mode, and a lug hole for the limiting shaft to penetrate through is formed in the lug plate. The position of the loading connecting block can be adjusted according to test requirements, so that the hanging requirements of different types of suspensions are met, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the technical field of tractor whole machine testing equipment, and in particular to a quick connection device for a tractor lifting function test bench. Background Technology

[0002] In the current domestic tractor performance improvement testing scenario, a tractor performance improvement test bench is required.

[0003] Currently, existing patent CN220872085U discloses a test bench for improving the performance of a through-type tractor. It includes a rear loading device installed in a pit to apply load to the suspension of the tractor under test, and a front tensioning mechanism to tighten the front end of the tractor. The rear loading device includes a vertically movable lifting frame and a loading sliding mechanism assembly. The loading sliding mechanism includes a lifting slider seat and a support plate hinged to the lifting slider seat. The support plate is connected to the rear suspension of the tractor under test. Tractor suspensions typically include an upper suspension and two lower suspensions. However, the spacing between the two lower suspensions varies for different tractor models. This application uses a fixed-length support plate structure, requiring the replacement of adaptable parts for different models, which is insufficient to meet the rapid testing needs of diverse products. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a quick connection device for a tractor lifting function test bench.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a quick connection device for a tractor lifting function test bench, including a fixed seat connected to the lifting slider seat and a loading plate hinged on the fixed seat. Loading connecting blocks are connected to both ends of the loading plate through connecting parts. Multiple adjustment holes that cooperate with the connecting parts are symmetrically provided on the loading plate.

[0006] The loading connection block is symmetrically provided with two ear plates, one of which is provided with a sliding sleeve tube, and a limiting shaft is slidably provided inside the sliding sleeve tube. The ear plate is provided with an ear hole for the limiting shaft to pass through.

[0007] Furthermore, the connector includes an upper shackle and a lower shackle connected to the upper shackle. The shackle pin of the lower shackle can pass through the adjustment hole. The lower end of the loading connecting block is provided with a connecting plate, and the connecting plate is provided with a connecting hole that cooperates with the shackle pin of the upper shackle.

[0008] Furthermore, a plurality of intermediate shackles are provided between the upper shackle and the lower shackle in sequence.

[0009] Furthermore, the sliding sleeve is provided with a guide groove, and the limiting shaft is provided with a limiting stop rod that extends out of the sliding sleeve through the limiting groove. The two ends of the guide groove are symmetrically provided with limiting grooves that are adapted to the limiting stop rod.

[0010] Furthermore, the limiting groove is perpendicular to the guide groove, and the limiting stop bar can be inserted into the limiting groove.

[0011] Furthermore, the fixed base has two symmetrically arranged connecting parts, and the loading plate is located between the two connecting parts and is hinged to the two connecting parts by a pin.

[0012] Furthermore, the upper end of the lifting slider seat is provided with a T-shaped limiting part, the lower end of the fixed seat is provided with a positioning part, and a positioning block is provided on one side of the positioning part. A T-shaped cavity is formed between the positioning part and the positioning block to cooperate with the T-shaped limiting part.

[0013] Furthermore, the T-shaped limiting part includes a connecting shaft and a connecting disc disposed on the upper end of the connecting shaft.

[0014] Furthermore, the positioning part is provided with a first arc-shaped groove and a U-shaped groove, and the positioning block is provided with a second arc-shaped groove opposite to the first arc-shaped groove. The second arc-shaped groove and the first arc-shaped groove form a first circular cavity for cooperating with the connecting plate.

[0015] The positioning block has an arc-shaped protrusion relative to the U-shaped groove. The arc-shaped protrusion extends into the U-shaped groove and cooperates with the U-shaped groove to form a second circular cavity for cooperating with the connecting shaft. The second circular cavity is connected to the first circular cavity.

[0016] The beneficial effects of this application are: 1. The multiple adjustment holes on the loading plate cooperate with the connectors to adjust the position of the loading connection block according to the test requirements, thus making it suitable for different types of suspension and having a wide range of applications.

[0017] 2. This application enables the rapid connection or disassembly of the loading connecting block and the lower suspension through the sliding fit of the sliding sleeve and the limiting shaft, as well as the snap-fit ​​structure of the limiting stop bar and the limiting groove.

[0018] 3. The connector of this application includes two interconnected upper and lower shackles, which gives the application a certain degree of flexibility and makes the connection more convenient and quick. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 for Figure 1 Front view;

[0021] Figure 3 This is a schematic diagram of the positioning part of this utility model;

[0022] Figure 4 This is a schematic diagram of the positioning block of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the fixed base and the lifting slider base of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the sliding sleeve tube of this utility model;

[0025] Figure 7 This is a schematic diagram of the connection between the loading connecting block and the lower suspension of this utility model.

[0026] The markings in the diagram are: 1. Fixed seat, 2. Loading plate, 3. Connector, 4. Loading connecting block, 5. Sliding sleeve, 6. Limiting shaft, 7. T-shaped cavity, 8. Lifting slider seat, 9. Lower suspension, 11. Connecting part, 12. Positioning part, 13. Positioning block, 21. Adjusting hole, 22. Pin, 31. Lower shackle, 32. Upper shackle, 41. Ear plate, 411. Ear hole, 42. Connecting plate, 421. Connecting hole, 51. Guide groove, 52. Limiting groove, 61. Limiting stop bar, 81. Connecting shaft, 82. Connecting disc, 121. First arc-shaped groove, 122. U-shaped groove, 131. Second arc-shaped groove, 132. Arc-shaped protrusion. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Please see Figure 1-7 This utility model provides a quick connection device for a tractor lifting function test bench, including a fixed base 1 connected to a lifting slider seat 8 and a loading plate 2 hinged to the fixed base 1. Loading plate 2 has loading connecting blocks 4 connected to both ends of the loading plate 2 via connectors 3. The loading plate 2 has a plurality of adjustment holes 21 symmetrically arranged to cooperate with the connectors 3. The loading connecting block 4 has two ear plates 41 symmetrically arranged. One of the ear plates 41 has a sliding sleeve 5. A limiting shaft 6 is slidably arranged inside the sliding sleeve 5. The ear plate 41 has an ear hole 411 for the limiting shaft 6 to pass through.

[0029] Among them, combined Figure 1 and Figure 2 As shown, the connector 3 includes an upper shackle 32 and a lower shackle 31 connected to the upper shackle 32. The shackle cross pin of the lower shackle 31 can pass through the adjustment hole 21. The lower end of the loading connecting block 4 is provided with a connecting plate 42, and the connecting plate 42 is provided with a connecting hole 421 that mates with the shackle cross pin of the upper shackle 32. It should be noted that the connection of two shackles is prior art and will not be described in detail here. For example, two shackles can be interlocked through the openings of their buckle bodies and fastened together using their respective pins or bolt assemblies to achieve a reliable connection between them for transmitting tensile force or bearing a certain load. The shackles involved in this application can all be the shackles in the prior art patent CN104015878A.

[0030] Combination Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the sliding sleeve 5 is provided with a guide groove 51, and the limiting shaft 6 is provided with a limiting stop 61 that extends out of the sliding sleeve 5 through the limiting groove 52. The limiting shaft 6 can rotate relative to the sliding sleeve 5. The guide groove 51 is symmetrically provided with limiting grooves 52 at both ends to fit the limiting stop 61. The limiting groove 52 is perpendicular to the guide groove 51, and the limiting stop 61 can be inserted into the limiting groove 52. The limiting groove 52 near the ear plate 41 is defined as the first limiting groove, and the limiting groove 52 away from the ear plate 41 is defined as the second limiting groove. The limiting stop 61 has an unlocked state and a locked state. In the unlocked state, the limiting stop 61 is located in the second limiting groove. In the locked state, the limiting shaft 6 passes through the ear hole 411 and the lower suspension 9 in sequence, and the limiting stop 61 is located in the first limiting groove. The lower suspension 9 has a through hole for the limiting shaft 6 to pass through.

[0031] Combination Figure 1 and Figure 2 As shown, the fixed base 1 has two symmetrically arranged connecting parts 11, each of which is plate-shaped. The loading plate 2 is located between the two connecting parts 11 and is hinged to the two connecting parts 11 by a pin 22. A cotter pin is also provided at one end of the pin 22.

[0032] Combination Figure 5 As shown, the upper end of the lifting slider seat 8 is provided with a T-shaped limiting part, and the lower end of the fixed seat 1 is provided with a positioning part 12. A positioning block 13 is provided on one side of the positioning part 12, and a T-shaped cavity 7 is formed between the positioning part 12 and the positioning block 13 to cooperate with the T-shaped limiting part. The T-shaped limiting part includes a connecting shaft 81 and a connecting plate 82 provided on the upper end of the connecting shaft 81. The connecting shaft 81 and the connecting plate 82 are integrally formed. The diameter of the connecting plate 82 is larger than the diameter of the connecting shaft 81.

[0033] Specifically, the positioning part 12 is provided with a first arc-shaped groove 121 and a U-shaped groove 122, and the positioning block 13 is provided with a second arc-shaped groove 131 opposite to the first arc-shaped groove 121. The second arc-shaped groove 131 and the first arc-shaped groove 121 form a first circular cavity for cooperating with the connecting plate 82. The positioning block 13 is provided with an arc-shaped protrusion 132 opposite to the U-shaped groove 122. The arc-shaped protrusion 132 extends into the U-shaped groove 122 and cooperates with the U-shaped groove 122 to form a second circular cavity for cooperating with the connecting shaft 81. The second circular cavity is connected to the first circular cavity.

[0034] The tractor lifting function test stand adapted in this application is the test stand in the existing patent CN220872085U. When using this application, the positioning part 12 and positioning block 13 of the fixed seat 1 are placed on both sides of the T-shaped limiting part, and then the positioning part 12 and positioning block 13 of the fixed seat 1 are fixed with bolts to form a T-shaped cavity 7 that encloses the T-shaped limiting part. The fixed seat 1 can rotate relative to the T-shaped limiting part, and the connecting shaft 81 and connecting plate 82 of the T-shaped limiting part are respectively embedded in the second circular cavity and the first circular cavity.

[0035] Based on the distance between the two lower suspensions 9 of the tractor under test, select a suitable adjustment hole 21 on the loading plate 2, pass the lower shackle 31 of the connector 3 through the adjustment hole 21, and then connect the upper shackle 32 to the connecting plate 42 of the loading connecting block 4, thereby connecting the loading connecting block 4 to the loading plate 2.

[0036] Subsequently, combined Figure 7 As shown, rotate the limiting stop 61 to disengage it from the second limiting groove, and push the limiting stop 61 to position it in the first limiting groove. At this time, the limiting shaft 6 passes through the ear hole 411 and the lower suspension 9 in sequence, completing the connection between the loading connecting block 4 and the lower suspension 9. Then, rotate the limiting stop 61 again to lock it into the first limiting groove to complete the locking and prevent the limiting shaft 6 from falling off or slipping during the test.

[0037] Of course, this utility model is not limited to the embodiments described above. Several other embodiments based on the design concept of this utility model are also provided below.

[0038] For example, in other embodiments, unlike the embodiments described above, a plurality of intermediate shackles are provided between the upper shackle 32 and the lower shackle 31, connected in sequence. Different numbers of intermediate shackles can be installed as needed to accommodate lower suspensions 9 at different heights, thus broadening the applicability.

[0039] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A quick coupling device for a tractor lifting function test bench, comprising a fixed seat (1) connected with a lifting slider seat (8) and a loading plate (2) hingedly arranged on the fixed seat (1), characterized in that, The loading plate (2) is connected with loading connecting blocks (4) through connecting pieces (3) at both ends, and a plurality of adjusting holes (21) matched with the connecting pieces (3) are symmetrically arranged on the loading plate (2); Two ear plates (41) are symmetrically arranged on the loading connecting block (4), one of the ear plates (41) is provided with a sliding sleeve pipe (5), a limiting shaft (6) is slidably arranged in the sliding sleeve pipe (5), and an ear hole (411) for passing through the limiting shaft (6) is arranged on the ear plate (41).

2. A quick hitch according to claim 1 for a test bench for the lifting function of a tractor, characterised in that, The connecting piece (3) comprises an upper shackle (32) and a lower shackle (31) connected with the upper shackle (32), a shackle cross pin of the lower shackle (31) can pass through the adjusting hole (21), and a connecting plate (42) is arranged at the lower end of the loading connecting block (4), and a connecting hole (421) matched with the shackle cross pin of the upper shackle (32) is arranged on the connecting plate (42).

3. A quick hitch device for a tractor lift function test bench according to claim 2, characterised in that, A plurality of intermediate shackles are further arranged between the upper shackle (32) and the lower shackle (31).

4. A quick hitch device for a tractor lift function test bench according to claim 1, characterized in that, A guide groove (51) is arranged on the sliding sleeve pipe (5), a limiting groove (52) is arranged on the limiting shaft (6), and a limiting stop lever (61) of the limiting groove (52) extends out of the sliding sleeve pipe (5), and the limiting stop lever (61) is symmetrically arranged at both ends of the guide groove (51).

5. A quick hitch device for a tractor lift function test bench according to claim 4, characterised in that, The limiting groove (52) is perpendicular to the guide groove (51), and the limiting stop lever (61) can be clamped in the limiting groove (52).

6. A quick connect device for a tractor lift function test stand according to claim 1, wherein, The fixed seat (1) has two connecting parts (11) symmetrically arranged thereon, the loading plate (2) is located between the two connecting parts (11), and the loading plate (2) is hingedly connected with the two connecting parts (11) through a pin shaft (22).

7. A quick connect device for a tractor lift function test stand according to claim 1, wherein, A T-shaped limiting part is arranged at the upper end of the lifting sliding block seat (8), a positioning part (12) is arranged at the lower end of the fixed seat (1), a positioning block (13) is arranged on one side of the positioning part (12), and a T-shaped cavity (7) matched with the T-shaped limiting part is formed between the positioning part (12) and the positioning block (13).

8. A quick connect device for a tractor lift function test stand according to claim 1, wherein, The T-shaped limiting part comprises a connecting shaft (81) and a connecting disc (82) arranged at the upper end of the connecting shaft (81).

9. The quick connect device for a tractor lift function test stand of claim 1, wherein, A first arc-shaped groove (121) and a U-shaped groove (122) are arranged on the positioning part (12), a second arc-shaped groove (131) is arranged on the positioning block (13) opposite to the first arc-shaped groove (121), and the second arc-shaped groove (131) and the first arc-shaped groove (121) form a first circular cavity matched with the connecting disc (82); An arc-shaped protruding part (132) is arranged on the positioning block (13) opposite to the U-shaped groove (122), the arc-shaped protruding part (132) extends into the U-shaped groove (122) and cooperates with the U-shaped groove (122) to form a second circular cavity matched with the connecting shaft (81), and the second circular cavity is communicated with the first circular cavity.

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