Clamping device for circular shaft of trailer

Abstract

The utility model relates to a clamping device for a circular shaft of a trailer, which comprises two V-shaped blocks which are arranged on a support frame and are used for supporting the circular shaft of the trailer, a locking gasket is fixed on one V-shaped block, an up-and-down movable support block is arranged on the locking gasket, an up-and-down movable block capable of sliding up and down is arranged on the up-and-down movable support block, and the locking gasket is fixed on the up-and-down movable block. A first clamping outer ring and a second clamping outer ring are rotatably connected to the upper end of the up-down movable block, the two clamping outer rings are semicircular and are folded together to form a circular clamping ring, U-shaped clamping grooves are formed in the upper ends of the two clamping outer rings, clamping bolts are rotatably installed in the two U-shaped clamping grooves, and the other ends of the clamping bolts are connected with locking nuts. The two clamping outer rings are driven to clamp and loosen around the center of the bottom circular shaft pin shaft through tightening and loosening of the locking nut, so that clamping and loosening of the circular shaft are achieved, the clamping device of the circular shaft can act on the circular shaft to generate enough clamping force, the slipping phenomenon in the installation process is avoided, and the assembly quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of machinery, and in particular to a clamping device for a trailer shaft. Background Technology

[0002] Generally, trailer axle assembly uses V-blocks at both ends for support. In the middle of the V-blocks at both ends, a V-shaped pressure block or other pressure block is used to press the upper surface of the axle tube. During the assembly process, tightening the wheel hub system tire bolts will generate a relatively large torque on the axle, which can easily cause the axle to rotate and slip.

[0003] To solve the assembly problems of existing round shafts, a clamping mechanism for the round shaft is added next to the supporting V-block. This mechanism is simple and convenient to operate, provides sufficient clamping force, prevents slippage during installation, and ensures assembly quality. For example, in utility model patent CN218110601U, entitled "A Disc Brake Axle Assembly Fixture," to position the axle and prevent slippage during assembly, two brake caliper connecting plates 5 are fitted onto the axle and supported on corresponding upright plates 2. The flat surface 18 is connected to the supporting surface 9, and the pin hole 16 is aligned with the connecting hole 17. Rotating the positioning bolt 13 relaxes the drive plate 11, and the stretched spring 12 drives the drive plate 11 to move closer to the upright plate 2, thereby synchronously moving the two pins 8 forward. When the pin seat 10 is connected to one side of the upright plate 2, the axle pin 8 is connected to the connecting hole 17 to achieve axle positioning. After the axle head nut 19 is tightened on the disc brake axle wheel end 4, the positioning bolt 13 is rotated to loosen the drive plate 11, pulling the drive plate 11 away from the upright plate 2, that is, the axle pin 8 is pulled out from the corresponding connecting hole 17. Then, the positioning bolt 13 is rotated to connect to the positioning groove 20 near the limit plate 14 to lock the drive plate 11, making it easy to remove the axle from the tooling. Although this patented structure can avoid the problem of axle slippage during assembly, the locking mechanism is relatively complex, and the brake caliper connecting plate 5 is a fixed, complete closed-loop structure that needs to be installed on the axle, making it very inconvenient to assemble or disassemble the axle, resulting in reduced axle assembly efficiency and affecting assembly quality. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a clamping device for a round shaft, which can generate sufficient clamping force on the trailer's round shaft before tightening the wheel hub system tire bolts on the round shaft. This avoids slippage during installation, ensures assembly quality, improves axle assembly efficiency, and enhances economic benefits.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A clamping device for a trailer axle includes two V-blocks mounted on a support frame to support the trailer axle. A locking washer is fixed to one of the V-blocks, and a vertically movable support block is mounted on the locking washer. A protruding support seat is provided on the vertically movable support block, and a through-cavity is provided within the protruding support seat. A vertically movable block is mounted above the protruding support seat and can be inserted into the cavity. The lower end of the vertically movable block has an elongated slot. A lifting pin is inserted through the elongated slot of the vertically movable block through the front and rear side walls of the protruding support seat, allowing the vertically movable block to pass through the elongated slot and be limited by the lifting pin. Within the length range of the device, it slides up and down inside the protruding support seat. A first clamping outer ring and a second clamping outer ring are rotatably connected to the upper end of the upper and lower movable blocks. Both the first clamping outer ring and the second clamping outer ring are semi-circular and come together to form a complete circular clamping ring. U-shaped slots are provided at the upper ends of the first clamping outer ring and the second clamping outer ring. Clamping bolts are rotatably installed in the two U-shaped slots. A top round pin is provided on the first clamping outer ring that passes through the U-shaped slot. A rotating connecting hole is provided at one end of the clamping bolt for the top round pin to pass through. The other end of the clamping bolt is threadedly connected to a locking nut.

[0007] Preferably, a further embodiment of the present invention is as follows: circular holes for fixing the lifting pin are provided on the front and rear side walls of the protruding support seat of the upper and lower movable support blocks, and a cotter pin is installed at the end of the lifting pin.

[0008] Preferably, a further embodiment of the present invention is as follows: a round hole is provided at the lower end of both the first clamping outer ring and the second clamping outer ring, and a round hole is also provided at the upper end of the upper and lower movable blocks. The round holes at the lower ends of the first clamping outer ring and the second clamping outer ring are aligned with the round holes at the upper ends of the upper and lower movable blocks and then connected by a bottom round pin.

[0009] Preferably, a further embodiment of the present invention is as follows: screw holes are provided on the upper and lower movable support blocks and the locking washer, and bolts, flat washers and internal hexagonal head bolts are used to tighten the upper and lower movable support blocks and the locking washer to the V-shaped block.

[0010] Preferably, a further embodiment of the present invention is as follows: adjustment support blocks are provided on both sides of the long side of the upper and lower movable blocks, and the upper and lower movable blocks are connected to the adjustment support blocks by bolt flat washers and internal hexagonal head bolts; the adjustment support blocks are provided with two long slots in the center, and the threaded holes of the upper and lower movable blocks are adjusted and fixed in the direction of the long slots of the adjustment support blocks.

[0011] The locking nut is an external hexagonal nut.

[0012] Preferably, a further embodiment of the present invention is: a rubber clamping inner ring, which is pressed tightly onto the round shaft, is fixed to the inner wall of the first clamping outer ring and the second clamping outer ring respectively.

[0013] The beneficial effects of this utility model are: by tightening and loosening the locking nut, the first clamping outer ring and the second clamping outer ring are driven to clamp and loosen around the center of the round shaft pin, thereby realizing the clamping and loosening of the trailer round shaft. This allows the clamping device of the round shaft to generate sufficient clamping force on the round shaft, avoids slippage during installation, ensures assembly quality, and improves economic efficiency. Attached Figure Description

[0014] Figure 1: Schematic diagram of the structure of this utility model;

[0015] Figure 2: Partial schematic diagram of this utility model;

[0016] Figure 3: 3D view of the V-shaped block;

[0017] Figure 4: 3D view of the locking washer;

[0018] Figure 5: 3D view of the upper and lower movable support blocks;

[0019] Figure 6: 3D view of circular pins 6-1, 6-2, and 6-3;

[0020] Figure 7: 3D view of the adjusted support block;

[0021] Figure 8: 3D view of the upper and lower movable blocks;

[0022] Figure 9: Three-dimensional view of the first clamping outer ring;

[0023] Figure 10: 3D view of the inner ring of the rubber clamp;

[0024] Figure 11: 3D view of the clamping bolt;

[0025] Figure 12: Three-dimensional view of the second clamping outer ring;

[0026] In the figure: (1) V-block; (2) locking washer; (3) upper and lower movable support block; (4) bolt flat washer; (5) internal hexagonal head bolt; (6) round pin shaft; (7) cotter pin; (8) adjusting support block; (9) upper and lower movable fixing block; (10) first clamping outer ring; (11) rubber clamping inner ring; (12) internal hexagonal countersunk head bolt; (14) clamping bolt; (15) locking nut; (16) second clamping outer ring. Detailed Implementation

[0027] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0028] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having" are used interchangeably.

[0029] And any variations thereof are intended to cover non-exclusive inclusion. In the embodiments of this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for better describing the embodiments of this disclosure and their embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. For those skilled in the art, the specific meaning of these terms in the embodiments of this disclosure can be understood according to the specific circumstances. The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] Please refer to Figures 1 to 12. This utility model provides a technical solution: a clamping device for a trailer shaft.

[0031] It includes two V-blocks 1, which are fixed on the bracket to support the trailer shaft. One of the V-blocks 1 is fixed with a locking washer 2, and the locking washer 2 is equipped with an upper and lower movable support block 3. Both the upper and lower movable support block 3 and the locking washer 2 are provided with screw holes. Bolts, flat washers 4 and internal hexagonal head bolts 5 are used to tighten them, thereby fixing the upper and lower movable support block 3 and the locking washer 2 to the V-block 1.

[0032] A protruding support seat is provided on the upper and lower movable support block 3. The protruding support seat has a through-cavity. An upper and lower movable block 9, insertable into the cavity, is mounted above the protruding support seat. The lower end of the upper and lower movable block 9 has a long slot. Corresponding circular holes are provided on the front and rear side walls of the protruding support seat. A lifting circular pin 6-1, capable of passing through the long slot of the upper and lower movable block 9, is inserted into the two circular holes. A cotter pin 7 is installed at the end of the lifting circular pin 6-1, allowing the upper and lower movable block 9 to be mounted on the protruding support seat. A first clamping outer ring 10 and a second clamping outer ring 16 are rotatably connected to the upper end of the upper and lower movable block 9. Both the first clamping outer ring 10 and the second clamping outer ring 16 are semi-circular, and when closed together, they form a complete structure. The circular clamping rings have circular holes at the lower ends of the first clamping outer ring 10 and the second clamping outer ring 16, and also have circular holes at the upper ends of the upper and lower movable blocks 9. The circular holes at the lower ends of the first clamping outer ring 10 and the second clamping outer ring 16 are aligned with the circular holes at the upper ends of the upper and lower movable blocks 9 and connected by the bottom circular pin 6-2. In this way, the first clamping outer ring 10 and the second clamping outer ring 16 are rotatably mounted on the upper ends of the upper and lower movable blocks 9. The first clamping outer ring 10 and the second clamping outer ring 16 can be rotated and opened around the bottom circular pin 6-2 as the axis center. The upper ends of the first clamping outer ring 10 and the second clamping outer ring 16 are both provided with U-shaped slots, and clamping bolts 14 are rotatably installed in the two U-shaped slots. Two circular holes are provided on the two outer walls of the U-shaped groove of the first clamping outer ring 10. A top circular pin 6-3 is inserted through these two circular holes. A clamping bolt 14 is rotatably connected to the top circular pin 6-3. One end of the clamping bolt 14 has a rotating connection hole through which the top circular pin 6-3 passes. The other end of the clamping bolt 14 is threadedly connected to a locking nut 15. Through the above connection, the upper and lower movable blocks 9 can slide up and down in the inner cavity of the protruding support seat within the length limit of the lifting circular pin 6-1 through the elongated slot. When clamping the circular shaft, it can automatically center and generate sufficient clamping force, and will not shake or slip when the circular shaft is tightened and assembled.

[0033] To improve the clamping effect, a rubber clamping inner ring 11 is fixed to the inner wall of the first clamping outer ring 10 and the second clamping outer ring 16. The rubber clamping inner ring 11 is connected to the first clamping outer ring 10 and the second clamping outer ring 16 by countersunk hexagonal bolts 12. The two rubber clamping inner rings 11 can increase the contact area with the trailer shaft, thereby increasing the clamping friction.

[0034] The operating method of this device is as follows:

[0035] Loosen the locking nut 15, and using the top round pin 6-3 as the center of rotation, open the clamping bolt 14 upwards. This will allow the first and second clamping outer rings 10 and 16 to open to the sides and downwards. Then, place the hoisting trailer shaft on the two V-blocks 1. Manually press the pressure block on the clamping mechanism between the two V-blocks 1 against the upper surface of the shaft tube. Then, manually close the first and second clamping outer rings 10 and 16 upwards to form a complete clamping ring. Using the top round pin 6-3 as the center, close the clamping bolt 14 and tighten the locking nut 15 to the preset torque value. 15 is pressed against the edge of the U-shaped groove of the second clamping outer ring 16, causing the first clamping outer ring 10 and the second clamping outer ring 16 to retract and clamp, thereby causing the two rubber clamping inner rings 11 to clamp the trailer shaft. The upper and lower movable blocks 9 can slide up and down in the inner cavity of the upper and lower movable support blocks 3 within the length range limited by the lifting round pin 6-1 through the long slot hole; when clamping the round shaft, it can automatically center and automatically adapt to the height difference of the trailer shaft, so that the clamping device of the round shaft can generate sufficient clamping force on the round shaft, avoid slippage during the tightening and installation process, ensure assembly quality, and improve economic efficiency. And through the first clamping outer ring 10 and the second clamping outer ring 16, which can be rotatably fastened together or separated, the trailer shaft can be quickly clamped, positioned or released, avoiding the problem that the brake caliper connecting plate used in the existing utility model patent CN218110601U is a fixed complete closed loop structure, avoiding the inconvenience of assembling or disassembling the shaft, which leads to reduced assembly efficiency and affected assembly quality.

[0036] Adjustment support blocks 8 are provided on both sides of the long side of the upper and lower movable blocks 9. The upper and lower movable blocks 9 are connected to the adjustment support blocks 8 by bolt flat washers 4 and internal hexagonal head bolts 5. The adjustment support blocks 8 are provided with two long slots in the center. The threaded holes of the upper and lower movable blocks 9 can be adjusted and fixed in the direction of the long slots of the adjustment support blocks 8. The support blocks are used to support the upper and lower movable blocks 9.

[0037] Optionally, the socket head cap screw 5 can also be an external hex bolt or other special bolts;

[0038] Optionally, the inner rubber clamping ring 11 can also be made of urethane or other similar soft elastic materials;

[0039] Optionally, the socket head cap screw 12 can also be a cross head countersunk screw 12, or other special countersunk screws;

[0040] Optionally, the locking nut 15 is preferably an external hexagonal nut, but a quadrilateral or other shaped nut can also be used.

[0041] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Any modifications or variations made by those skilled in the art, without departing from the scope of the utility model's technical solution, using the disclosed technical content, are equivalent embodiments of this utility model. Therefore, all equivalent changes made based on the concept of this utility model without departing from its technical solution should be covered within the protection scope of this utility model.

Claims

1. A clamping device for a trailer axle, characterized in that, The system includes two V-blocks (1) that support the trailer shaft on a support frame. A locking washer (2) is fixed on one of the V-blocks (1). An upper and lower movable support block (3) is installed on the locking washer (2). A protruding support seat is provided on the upper and lower movable support block (3). A cavity that extends vertically through the protruding support seat is provided inside the protruding support seat. An upper and lower movable block (9) that can be inserted into the cavity is installed above the protruding support seat. The lower end of the upper and lower movable block (9) has a long slot. A lifting pin (6-1) that can pass through the long slot of the upper and lower movable block (9) is provided on the front and rear side walls of the protruding support seat. This allows the upper and lower movable block (9) to move through the long slot within the protruding support seat within the length limited by the lifting pin (6-1). The cavity slides up and down, and a first clamping outer ring (10) and a second clamping outer ring (16) are rotatably connected to the upper end of the upper and lower movable blocks (9). The first clamping outer ring (10) and the second clamping outer ring (16) are both semi-circular and come together to form a complete circular clamping ring. U-shaped slots are provided at the upper ends of the first clamping outer ring (10) and the second clamping outer ring (16). Clamping bolts (14) are rotatably installed in the two U-shaped slots. A top round pin (6-3) is provided on the first clamping outer ring (10) and passes through the U-shaped slot. A rotating connection hole is provided at one end of the clamping bolt (14) for the top round pin (6-3) to pass through. The other end of the clamping bolt (14) is threadedly connected to the locking nut (15).

2. The clamping device for a trailer shaft according to claim 1, characterized in that... The front and rear side walls of the protruding support seat of the upper and lower movable support block (3) are provided with round holes for fixing the lifting round pin (6-1), and a cotter pin (7) is installed at the end of the lifting round pin (6-1).

3. The clamping device for a trailer shaft according to claim 1, characterized in that... A round hole is provided at the lower end of the first clamping outer ring (10) and the second clamping outer ring (16), and a round hole is also provided at the upper end of the upper and lower movable blocks (9). The round holes at the lower end of the first clamping outer ring (10) and the second clamping outer ring (16) are aligned with the round holes at the upper end of the upper and lower movable blocks (9) and then connected by the bottom round pin (6-2).

4. The clamping device for a trailer shaft according to claim 1, characterized in that... Screw holes are provided on the upper and lower movable support blocks (3) and locking washers (2). The upper and lower movable support blocks (3) and locking washers (2) are fixed on the V-block (1) by tightening with bolt flat washers (4) and internal hexagonal head bolts (5).

5. The clamping device for a round shaft according to claim 1, characterized in that: Adjustment support blocks (8) are provided on both sides of the long side of the upper and lower movable blocks (9). The upper and lower movable blocks (9) are connected to the adjustment support blocks (8) by bolts, flat washers and internal hexagonal head bolts. The adjustment support blocks (8) are provided with two long slots in the center. The threaded holes of the upper and lower movable blocks (9) are adjusted and fixed in the direction of the long slots of the adjustment support blocks (8).

6. A clamping device for a round shaft according to claim 1, characterized in that... The locking nut (15) is an external hexagonal nut.

7. A clamping device for a round shaft according to claim 1, characterized in that... Rubber clamping inner rings (11) that are pressed tightly against the round shaft are fixed to the inner walls of the first clamping outer ring (10) and the second clamping outer ring (16).

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