Clamping tool for tow hook support

Abstract

The clamping tool comprises a bed mould and a clamping assembly installed on the bed mould, the clamping assembly comprises a cross beam, a vertical plate and a hydraulic cylinder, the output end of the hydraulic cylinder is connected with the cross beam, the two ends of the cross beam are connected with guide rods, the guide rods penetrate through the end portion of the vertical plate to be connected with a connecting plate, and the connecting plate is connected with the vertical plate. The connecting plate is provided with a pressing block, the pressing block is provided with a positioning groove used for positioning the tow hook support, the vertical plate is provided with a positioning plate, the positioning plate and the pressing block are oppositely arranged, the positioning plate is provided with a positioning plane used for positioning the tow hook support, and the positioning plane is provided with an edge cutting pin used for positioning the tow hook support. When the hydraulic cylinder works, the connecting plate and the pressing block are driven to move through the guide rod, the pressing block tightly presses the tow hook support, the tow hook support is positioned through the edge cutting pin on the positioning plane, the positioning accuracy of the tow hook support is further guaranteed, the machining precision of the tow hook support is guaranteed, the overall structure is simple, operation is convenient, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping tools, and particularly relates to a clamping tool for a trailer hitch bracket. Background Art

[0002] A trailer hitch is a part used to tow a vehicle, and the connection between the trailer hitch and the vehicle requires a trailer hitch bracket to fix the trailer hitch. Due to the irregular structure of the trailer hitch bracket, multiple tools need to be made and the workpiece needs to be clamped multiple times during processing to machine each position. Since the trailer hitch bracket needs to be positioned for each clamping, the machining accuracy and efficiency are affected. Summary of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a clamping tool for a trailer hitch bracket.

[0004] The technical solution for the utility model to solve the above technical problems is as follows: A clamping tool for a trailer hitch bracket includes a base plate and a clamping assembly installed on the base plate. The clamping assembly includes a cross beam, a vertical plate, and a hydraulic cylinder. The output end of the hydraulic cylinder is connected to the cross beam. Guide rods are connected to both ends of the cross beam. The end of the guide rod passing through the vertical plate is connected to a connecting plate. A pressing block is installed on the connecting plate. A positioning groove for positioning the trailer hitch bracket is provided on the pressing block. A positioning plate is installed on the vertical plate. The positioning plate is arranged opposite to the pressing block. The positioning plate is provided with a positioning plane for positioning the trailer hitch bracket. A reduced diameter pin is installed on the positioning plane for positioning the trailer hitch bracket.

[0005] Based on the above technical solutions, the utility model can further make the following improvements to the above technical solutions:

[0006] Preferably, two corner cylinders are installed on the vertical plate. The output end of each corner cylinder is connected to a pressing plate. The two pressing plates are located on both sides of the trailer hitch bracket. The pressing plates are used to press the trailer hitch bracket.

[0007] Preferably, a spherical surface protruding outward is provided on one side of the pressing block. A spherical groove adapted to the spherical surface is provided on the connecting plate.

[0008] Preferably, a cylindrical pin is provided on the positioning plate. The cylindrical pin is located above and to the side of the reduced diameter pin.

[0009] Preferably, the hydraulic cylinder and the vertical plate are located on the same side of the cross beam. The output end of the hydraulic cylinder is connected to the cross beam through a joint.

[0010] Preferably, the positioning groove is a trapezoidal groove with an opening at one end. The opening angle α of the positioning groove is 90° - 100°.

[0011] Preferably, a guide sleeve is installed on the vertical plate, and the guide rod is slidably inserted into the guide sleeve.

[0012] Preferably, the positioning plate is detachably installed on the vertical plate.

[0013] Preferably, a positioning screw is provided on the connecting plate, and the end of the positioning screw abuts against the trailer hitch bracket.

[0014] Preferably, there are two sets of clamping components.

[0015] The beneficial effects of the present utility model are as follows: By cooperating the positioning plane with the serrated pin, positioning of one end of the trailer hitch bracket is achieved. The serrated pin can prevent the trailer hitch bracket from rotating, ensuring the accuracy of positioning. When the hydraulic cylinder works, the connecting plate and the pressing block are driven to move through the guide rod, and the pressing block presses the other end of the trailer hitch bracket, further ensuring the accuracy of positioning of the trailer hitch bracket and guaranteeing the machining accuracy of the trailer hitch bracket. By arranging corner cylinders at both ends of the trailer hitch bracket, the corner cylinders drive the pressing plates to press the trailer hitch bracket from both sides, reducing the situation of the trailer hitch bracket shaking, further ensuring the firmness of clamping of the trailer hitch bracket, guaranteeing the machining accuracy of the trailer hitch bracket. The overall structure is simple, the operation is convenient, multiple processes can be processed in one clamping, and the machining efficiency of the trailer hitch bracket is improved. Description of the Drawings

[0016] Figure 1 is the front view of the clamping tooling of the present utility model;

[0017] Figure 2 is the top view schematic diagram of the trailer hitch bracket of the present utility model;

[0018] Figure 3 is the schematic diagram when the serrated pin of the present utility model is installed;

[0019] Figure 4 is the structural schematic diagram of the pressing block of the present utility model;

[0020] Figure 5 is the front view of the connecting plate of the present utility model;

[0021] Figure 6 is the top view schematic diagram of the connecting plate of the present utility model;

[0022] Figure 7 is the front view of the cross beam of the present utility model;

[0023] Figure 8 is Figure 2 the partial enlarged view at A in

[0024] The reference numerals are recorded as follows: 1. Platen; 2. Cross beam; 3. Joint; 4. Guide rod; 5. Guide sleeve; 6. Vertical plate; 6.1. Mounting hole; 7. Press block; 7.1. Positioning groove; 7.2. Spherical surface; 8. Hydraulic cylinder; 9. Backing plate; 10. Connecting plate; 10.1. Spherical groove; 11. Positioning plate; 12. Slotted key; 13. Positioning pin; 14. Corner cylinder; 15. Pressure plate; 16. Trailer hitch bracket; 17. Cylindrical pin; 18. Positioning screw. Detailed implementation mode

[0025] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0026] As Figures 1 to 8 shown, the present utility model discloses a clamping tool for a trailer hitch bracket, which includes a platen 1 and a clamping assembly installed on the platen 1. One group, two groups or multiple groups of clamping assemblies are provided. In this embodiment, two groups of clamping assemblies are provided. The clamping assembly includes a cross beam 2, a vertical plate 6 and a hydraulic cylinder 8. The output end of the hydraulic cylinder 8 is connected to the cross beam 2. Guide rods 4 are connected to both ends of the cross beam 2. The guide rods 4 pass through the ends of the vertical plate 6 and are connected to a connecting plate 10. A press block 7 is installed on the connecting plate 10. A positioning groove 7.1 for positioning the trailer hitch bracket 16 is provided on the press block 7. A positioning plate 11 is installed on the vertical plate 6. The positioning plate 11 is arranged opposite to the press block 7. The positioning plate 11 is provided with a positioning plane for positioning the trailer hitch bracket 16. A slotted key 12 is installed on the positioning plane. The slotted key 12 is used to position the trailer hitch bracket 16. One end of the trailer hitch bracket 16 is provided with a corresponding positioning hole. By matching the slotted key 12 with the positioning hole, the positioning of the trailer hitch bracket 16 is realized and rotation is avoided. Among them, in the previous process, a reference plane for positioning is processed at one end of the trailer hitch bracket 16. The positioning plane is matched with the reference plane to ensure the accuracy of the positioning of the trailer hitch bracket 16 and ensure the processing accuracy.

[0027] Furthermore, U-shaped grooves are provided at both ends of the cross beam 2. The ends of the guide rods 4 are located in the U-shaped grooves and are connected by screws or bolts. The guide rods 4 are positioned through the U-shaped grooves, reducing the installation difficulty and improving the operation convenience.

[0028] Furthermore, a positioning screw 18 is provided on the connecting plate 10. The end of the positioning screw 18 abuts against the trailer hitch bracket 16. The effect of supporting and positioning the trailer hitch bracket 16 is further increased, the stability of the trailer hitch bracket 16 is increased, and threaded holes can be processed at corresponding positions according to the shape of the trailer hitch bracket 16 to meet the clamping requirements of different-shaped trailer hitch brackets 16 and save processing costs.

[0029] In this embodiment, specifically, there are two mounting holes 6.1 on the vertical plate 6. Two corner cylinders 14 are respectively mounted in the mounting holes 6.1. A backing plate 9 is sleeved on the end of the corner cylinder 14. The backing plate 9 is mounted on the vertical plate 6 by screws or bolts to ensure the firm installation of the corner cylinder 14. The output end of each corner cylinder 14 is connected with a pressing plate 15. The two pressing plates 15 are located on both sides of the trailer hitch bracket 16. The pressing plate 15 is used to press the trailer hitch bracket 16. The two pressing plates 15 are located above the guide rod 4 and press on the step of the trailer hitch bracket 16 to further ensure the firm clamping of the trailer hitch bracket 16.

[0030] Furthermore, according to the structure of the trailer hitch bracket 16, the corner cylinder 14 controls the moving distance of the pressing plate 15 to meet the clamping requirements of trailer hitch brackets 16 with different structures, improving the convenience of use and reducing the processing cost.

[0031] Furthermore, one side of the pressing block 7 is provided with a protruding spherical surface 7.2. The connecting plate 10 is provided with a spherical groove 10.1 adapted to the spherical surface 7.2. The spherical surface 7.2 of the pressing block 7 is in the spherical groove 10.1 of the pressing plate 10 and can flexibly rotate around the axis of the spherical groove 10.1 within a small range, such as within 10°. This facilitates the positioning of the trailer hitch bracket 16, and the bearing pressure is uniform, which is beneficial to the pressing block 7 stably pressing on the trailer hitch bracket 16.

[0032] In this embodiment, the positioning plate 11 is provided with a cylindrical pin 17. The positioning pin 17 is located above the side of the dowel pin 12, further improving the positioning effect on the trailer hitch bracket 16.

[0033] Furthermore, the positioning plate 11 is detachably mounted on the vertical plate 6 by screws or bolts. According to the shape of the trailer hitch bracket 16, different positioning plates 11 are replaced. The positions of the cylindrical pin 17 and the dowel pin 12 on different positioning plates 11 are different, so as to meet the positioning requirements of trailer hitch brackets 16 with different shapes and further save the processing cost.

[0034] Furthermore, two positioning pins 13 are mounted on the vertical plate 6. The positioning pins 13 are used to position the position of the positioning plate 11, reducing the installation difficulty of the positioning plate 11, facilitating the replacement of different positioning plates 11, and improving the convenience of operation.

[0035] In this embodiment, specifically, the hydraulic cylinder 8 and the vertical plate 6 are on the same side of the cross beam 2. The output end of the hydraulic cylinder 8 is connected to the cross beam 2 through a joint 3. This reduces the overall length of the clamping tooling and saves the floor area.

[0036] In this embodiment, specifically, the positioning groove 7.1 is a trapezoidal groove with an opening at one end. The opening angle α of the positioning groove 7.1 is 90° - 100°. The positioning groove 7.1 positions the ball head structure on the trailer hitch bracket 16 to ensure the stability of the positioning of the trailer hitch bracket 16.

[0037] In this embodiment, a guide bushing 5 is installed on the vertical plate 6, and the guide rod 4 is slidably inserted into the guide bushing 5. The guide bushing 5 can be replaced according to the wear condition, reducing the wear of the vertical plate 6, increasing the service life of the vertical plate 6, and saving costs.

[0038] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A clamping tooling for a trailer hitch bracket, characterized in that, It includes a platen (1) and a clamping assembly mounted on the platen (1). The clamping assembly includes a cross beam (2), a vertical plate (6), and a hydraulic cylinder (8). The output end of the hydraulic cylinder (8) is connected to the cross beam (2). Guide rods (4) are connected to both ends of the cross beam (2). The guide rods (4) pass through the ends of the vertical plate (6) and are connected to a connecting plate (10). A pressing block (7) is mounted on the connecting plate (10). A positioning groove (7.1) for positioning a trailer hitch bracket (16) is provided on the pressing block (7). A positioning plate (11) is mounted on the vertical plate (6). The positioning plate (11) is arranged opposite to the pressing block (7). The positioning plate (11) is provided with a positioning plane for positioning the trailer hitch bracket (16). A dowel pin (12) is mounted on the positioning plane and is used to position the trailer hitch bracket (16).

2. The clamping tool for a trailer hitch bracket according to claim 1, characterized in that, Two corner cylinders (14) are mounted on the vertical plate (6). The output end of each corner cylinder (14) is connected to a pressing plate (15). The two pressing plates (15) are located on both sides of the trailer hitch bracket (16), and the pressing plates (15) are used to clamp the trailer hitch bracket (16).

3. The clamping tooling for a trailer hitch bracket according to claim 1 or 2, characterized in that, One side of the pressing block (7) is provided with a protruding spherical surface (7.2). A spherical groove (10.1) adapted to the spherical surface (7.2) is provided on the connecting plate (10).

4. The clamping tooling for a trailer hitch bracket according to claim 1, characterized in that, The positioning plate (11) is provided with a cylindrical pin (17), and the cylindrical pin (17) is located above the side of the dowel pin (12).

5. The clamping tooling for a trailer hitch bracket according to claim 1, characterized in that, The hydraulic cylinder (8) and the vertical plate (6) are on the same side of the cross beam (2). The output end of the hydraulic cylinder (8) is connected to the cross beam (2) through a joint (3).

6. The clamping tooling for a trailer hitch bracket according to claim 1, characterized in that, The positioning groove (7.1) is a trapezoidal groove with an opening at one end, and the opening angle α of the positioning groove (7.1) is 90° - 100°.

7. The clamping tooling for a trailer hitch bracket according to claim 1, characterized in that, A guide sleeve (5) is mounted on the vertical plate (6), and the guide rod (4) is slidably inserted into the guide sleeve (5).

8. The clamping tooling for a trailer hitch bracket according to claim 1, wherein The positioning plate (11) is detachably mounted on the vertical plate (6).

9. The clamping tooling for a trailer hitch bracket according to claim 1, characterized in that, The connecting plate (10) is provided with a positioning screw (18), and the end of the positioning screw (18) abuts against the trailer hitch bracket (16).

10. The clamping tooling for a trailer hitch bracket according to claim 1, characterized in that, There are two sets of the clamping assemblies.

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