One-way check wedge mechanism to prevent loosening

Abstract

The present invention provides a one-way check wedge mechanism for preventing loosening, which is provided with a vehicle-mounted base and a bearing main beam, and the bearing main beam is fixedly connected to the vehicle-mounted base through a limit pin shaft; it is also provided with an anti-loosening mechanism, the fixed wedge block of the anti-loosening mechanism is fixed to a vertical support frame, the anti-loosening mechanism bracket is fixed to the bearing main beam, and the sliding wedge block is arranged between the fixed wedge block and the anti-loosening mechanism bracket. The eccentric shaft is arranged above the sliding wedge block, and its outer cylindrical surface is tangent to the top surface (i.e., the big end) of the sliding wedge block; the two ends of the eccentric shaft penetrate the vertical support frame, the anti-loosening mechanism bracket and the one-way check bearing, and one end of the eccentric shaft is also connected to a heavy hammer. When the car is driving on a bumpy road, the heavy hammer, under the action of its own weight, swings downward with the eccentric shaft as the center of the circle along with the bump, driving the eccentric shaft to rotate, and the outer cylindrical surface of the eccentric shaft presses the sliding wedge block downward; due to the action of the one-way check bearing, the eccentric shaft can only rotate in one direction, thereby firmly locking the vehicle-mounted base and the bearing main beam in the vertical direction.

Description

Technical Field

[0001] The present invention relates to all mechanical anti-loosening mechanisms applied to bumpy working conditions, such as the technical field of automobile manufacturing and assembly, and in particular to a one-way backstop anti-loosening wedge-shaped mechanism. Background Art

[0002] With the development of economy and science and technology, and with the national strategic goals of carbon neutrality and carbon peak being proposed, new energy vehicles have been used more and more widely, especially heavy-duty truck battery replacement has become the main trend in the development of heavy-duty trucks. The vehicle-mounted base and the load-bearing main beam of the battery box of heavy-duty truck battery replacement are usually fixed together by bolting. Affected by factors such as the flatness of the road surface at the work site and the stress deformation of the heavy-duty truck main beam after loading, the vehicle-mounted base will not only slip horizontally relative to the load-bearing main beam, but will also be affected by the amplitude and frequency of the bumps, vibrating in the vertical direction, which can easily cause the bolts to loosen, thereby causing the vehicle-mounted base to loosen, posing a potential safety hazard to the vehicle battery and further affecting the driving safety of the vehicle. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned technology and to provide a one-way check wedge mechanism to prevent loosening, so as to lock the vehicle-mounted base and the load-bearing main beam (schematically) in the vertical direction.

[0004] To this end, the present invention provides a one-way check wedge mechanism for preventing loosening, which is provided with a vehicle-mounted base and a load-bearing main beam. The vehicle-mounted base is connected to the load-bearing main beam through a limit pin shaft, and is also provided with an anti-loosening mechanism. The anti-loosening mechanism ensures that the vehicle-mounted base holds the load-bearing main beam tightly to prevent the vehicle-mounted base from loosening in the vertical direction of the load-bearing main beam.

[0005] Preferably, the anti-loosening mechanism includes a weight, an eccentric shaft connecting rod, an eccentric shaft, a wedge block pair and an anti-loosening mechanism bracket; the vehicle-mounted base includes a main support frame and a vertical support frame fixedly connected together, the vertical support frame is U-shaped, and the wedge block pair is arranged in the U-shaped groove of the vertical support frame. The wedge block pair includes a fixed wedge block and a sliding wedge block, the fixed wedge block is fixedly connected to the vertical support frame by screws; the anti-loosening mechanism bracket is fixedly connected to the load-bearing main beam by screws; the sliding wedge block is clamped between the fixed wedge block and the anti-loosening mechanism bracket. The eccentric shaft is arranged above the sliding wedge block, and its outer cylindrical surface is tangent to the top surface (i.e., the big end) of the sliding wedge block; the two ends of the eccentric shaft pass through the two ends of the vertical support frame and the anti-loosening mechanism bracket in turn, and are connected to the one-way check bearing; the one-way check bearing is fixedly installed in the bearing chamber outside the two ends of the anti-loosening mechanism bracket. One end of the eccentric shaft extends out of a one-way check bearing and is connected to an eccentric shaft connecting rod; the end of the eccentric shaft connecting rod is connected to a weight.

[0006] Preferably, the anti-loosening mechanism bracket includes a bracket back plate, which is fixedly connected to the bearing main beam by screws and pads, the head end of the screw is arranged on the outer side of the bracket back plate, and the tail end of the screw is screwed to the pad; connecting ear plates are provided at both ends of the bracket back plate, the vertical support is arranged between the two connecting ear plates, and the one-way check bearing is fixed in the bearing chamber outside the connecting ear plate.

[0007] Preferably, screw anti-loosening pads are provided between the screw and the vertical support frame and between the screw and the anti-loosening mechanism bracket. Both ends of the screw anti-loosening pads are provided with folded edges, which are arranged on the outside of the screw head to prevent the screw from reversing and loosening.

[0008] Preferably, reinforcing ribs are provided between the main support frame and the vertical support frame.

[0009] Preferably, corresponding positioning and mounting holes are provided in the middle of the fixed wedge block and the sliding wedge block.

[0010] Preferably, the vehicle-mounted base also includes connecting ear frames, which are arranged on both sides of the vehicle-mounted base and fixedly connected to the load-bearing main beam by screws.

[0011] The present invention provides a one-way backstop and anti-loosening wedge mechanism, which has the following beneficial effects:

[0012] The present invention is provided with a vehicle-mounted base and a load-bearing main beam (schematic diagram), and the vehicle-mounted base and the load-bearing main beam (schematic diagram) are fixedly connected in the horizontal direction by a limit pin shaft to prevent the vehicle-mounted base from sliding in the horizontal direction along the load-bearing main beam (schematic diagram). The present invention is also provided with an anti-loosening mechanism. When the car is driving on a bumpy road, the weight of the anti-loosening mechanism swings downward with the eccentric shaft as the center of the circle under the action of its own weight, driving the eccentric shaft to rotate, and the outer circular surface of the eccentric shaft presses the sliding wedge block downward to move downward, so that the vehicle-mounted base and the load-bearing main beam (schematic diagram) are further fixed. Due to the setting of the one-way check bearing, the eccentric shaft can only rotate in one direction, and the corresponding sliding wedge block can only move downward, thereby firmly locking the vehicle-mounted base and the load-bearing main beam (schematic diagram) in the vertical direction.

[0013] The present invention has a simple structure, and utilizes the rotation and extrusion of the eccentric shaft to lock the sliding wedge block tighter and tighter, and the setting of the one-way check bearing avoids the eccentric shaft from reversing, so that the vehicle-mounted base and the load-bearing main beam (schematic diagram) are firmly fixed in the vertical direction, and can be widely used in the field of automobile manufacturing and assembly technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an assembled stereogram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the vehicle-mounted base of the present invention;

[0016] Figure 3 It is a structural schematic diagram of the anti-loosening mechanism of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the anti-loosening mechanism bracket of the present invention;

[0018] Figure 5 It is a schematic structural diagram of the wedge block pair of the present invention.

[0019] Markings in the figure: 1. Vehicle base, 11. Connecting ear bracket, 12. Main support frame, 13. Vertical support frame, 14. Reinforcing ribs, 15. Limit pin, 2. Load-bearing main beam (schematic), 3. Anti-loosening mechanism, 31. Weight, 32. Eccentric shaft, 33. Fixed wedge block, 331. Positioning mounting hole, 34. Sliding wedge block, 35. Anti-loosening mechanism bracket, 351. Bracket back plate, 352. Connecting ear plate, 36. One-way check bearing, 37. Eccentric shaft connecting rod, 38. Pad, 39. Screw anti-loosening pad, 391. Folding edge. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0021] Depend on Figure 1 to Figure 5 As shown, the present invention provides a one-way check wedge mechanism for preventing loosening. Taking the heavy-duty truck battery replacement of new energy vehicles as an example, it is provided with a vehicle-mounted base 1 and a bearing main beam 2 (schematic). The bearing main beam 2 (schematic) is provided with two, which are respectively arranged at the two ends of the vehicle-mounted base 1 and fixedly connected to the connecting ear frames 11 on both sides of the vehicle-mounted base 1 through the limit pin 15. The limit pin 15 fixes the vehicle-mounted base 1 and the bearing main beam 2 (schematic) in the horizontal direction to prevent the vehicle-mounted base 1 from sliding in the horizontal direction along the bearing main beam 2 (schematic). The present invention is also provided with an anti-loosening mechanism 3, which is provided with four anti-loosening mechanisms 3, which are symmetrically arranged below the vehicle-mounted base 1. The anti-loosening mechanism 3 ensures that the vehicle-mounted base 1 holds the bearing main beam 2 (schematic) tightly to prevent the vehicle-mounted base 1 from loosening in the vertical direction of the bearing main beam 2 (schematic).

[0022] Specifically, the anti-loosening mechanism 3 includes a weight 31, an eccentric shaft connecting rod 37, an eccentric shaft 32, a wedge block pair and an anti-loosening mechanism bracket 35. The vehicle-mounted base 1 includes a main support frame 12 and a vertical support frame 13 fixedly connected together, the vertical support frame 13 is U-shaped, the wedge block pair is arranged in the U-shaped groove of the vertical support frame 13, the wedge block pair includes a fixed wedge block 33 and a sliding wedge block 34, the fixed wedge block 33 and the sliding wedge block 34 are provided with adaptive, inclined wedge surfaces, and the wedge surfaces of the fixed wedge block 33 and the sliding wedge block 34 are slidably connected. The end of the fixed wedge block 33 with a large cross section faces downward, and it is fixedly connected to the vertical support frame 13 by screws; the anti-loosening mechanism bracket 35 is fixedly connected to the load-bearing main beam 2 (schematic) by screws; the end of the sliding wedge block 34 with a large cross section faces upward, and it is clamped between the fixed wedge block 33 and the anti-loosening mechanism bracket 35 and can move downward along the wedge surface. The eccentric shaft 32 is arranged above the sliding wedge block 34, and its outer cylindrical surface is tangent to the top surface (i.e., the big end) of the sliding wedge block 34. The two ends of the eccentric shaft 32 pass through the vertical support frame 13 and the two ends of the anti-loosening mechanism bracket 35 in sequence and are connected to the one-way check bearing 36. The one-way check bearing 36 is fixedly installed in the bearing chamber outside the two ends of the anti-loosening mechanism bracket 35; one end of the eccentric shaft 32 extends out of the one-way check bearing 36 to connect the eccentric shaft connecting rod 37, and the extension direction of the eccentric shaft connecting rod 37 is perpendicular to the extension direction of the eccentric shaft 32. The end of the eccentric shaft connecting rod 37 is connected to the weight 31.

[0023] When the car is driving on a bumpy road, the weight 31 swings downward with the eccentric shaft 32 as the center under the action of its own weight, and the torque is transmitted to the eccentric shaft 32 by the eccentric shaft connecting rod 37, driving the eccentric shaft 32 to rotate, and the outer surface of the eccentric shaft 32 presses the sliding wedge block 34 downward. Due to the setting of the one-way check bearing 36, the eccentric shaft 32 can only rotate in one direction, and the corresponding sliding wedge block 34 can only move downward, so that the vehicle-mounted base 1 and the load-bearing main beam 2 (illustration) are locked in the vertical direction, and will only become tighter and tighter.

[0024] Furthermore, the anti-loosening mechanism bracket 35 includes a bracket back plate 351, and the bracket back plate 351 is fixedly connected to the load-bearing main beam (schematic) 2 through screws and pads 38. The bracket back plate 351 and the pads 38 are arranged on the front and rear sides of the load-bearing main beam (schematic) 2, and the head end of the screw is arranged on the outside of the bracket back plate 351. The end of the screw is screwed with the pad 38 to fix the anti-loosening mechanism bracket 35 to the load-bearing main beam 2 (schematic). Connecting ear plates 352 are arranged at both ends of the bracket back plate 351, and the vertical support frame 13 is arranged between the two connecting ear plates 352. The one-way check bearing 36 is fixed in the bearing chamber outside the connecting ear plate 352 to facilitate the installation and fixation of the eccentric shaft 32.

[0025] Screw anti-loosening pads 39 are provided between the screw and the vertical support frame 13 and between the screw and the anti-loosening mechanism bracket 35. Folding edges 391 are provided at both ends of the screw anti-loosening pads 39. The folding edges 391 are provided outside the head of the screw and are in contact with or very close to one side of the head of the screw to prevent the screw from reversing and loosening. During assembly, the screw anti-loosening pads 39 can be made of straight plates. After tightening the screws, the two ends of the screw anti-loosening pads 39 can be bent to form the folding edges 391, which is easy to operate.

[0026] Furthermore, reinforcing ribs 14 are provided between the main support frame 12 and the vertical support frame 13 to enhance the strength of the vehicle-mounted base 1 .

[0027] The middle parts of the fixed wedge block 33 and the sliding wedge block 34 are provided with corresponding positioning and mounting holes 331. When assembling, the fixed wedge block 33 and the sliding wedge block 34 are first fixed together using the positioning screws and the positioning and mounting holes 331, and the positioning screws can be removed after the entire anti-loosening mechanism 3 is assembled.

[0028] The working principle of the present invention is:

[0029] After the anti-loosening mechanism 3 is assembled, the sliding wedge block 34 is clamped between the fixed wedge block 33 and the anti-loosening mechanism bracket 35, and the positioning screws for fixing the sliding wedge block 34 are removed.

[0030] When the car is driving on a bumpy road, the weight 31 moves downward with the eccentric shaft 32 as the center under the action of its own weight, and the torque is transmitted to the eccentric shaft 32 by the eccentric shaft connecting rod 37, driving the eccentric shaft 32 to rotate, and the outer surface of the eccentric shaft 32 presses the sliding wedge block 34 downward to move downward. Due to the setting of the one-way check bearing 36, the eccentric shaft 32 can only rotate in one direction, and the corresponding sliding wedge block 34 can only move downward, so that the vehicle-mounted base 1 and the load-bearing main beam 2 (illustration) are firmly locked in the vertical direction, and there will be no safety hazards caused by the loosening of screws due to road bumps.

[0031] The present invention has a simple structure, and utilizes the rotation and extrusion of the eccentric shaft 32 to lock the sliding wedge block 34 tighter and tighter, and the setting of the one-way check bearing 36 prevents the eccentric shaft 32 from reversing, so that the vehicle-mounted base 1 and the bearing main beam 2 (schematically) are firmly fixed in the vertical direction.

[0032] In the description of the present invention, it is necessary to understand that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A one-way backstop anti-loosening wedge-shaped mechanism, which is provided with a vehicle-mounted base and a load-bearing main beam, characterized in that: The vehicle-mounted base is connected to the load-bearing main beam through a limit pin shaft, and is also provided with an anti-loosening mechanism, which ensures that the vehicle-mounted base holds the load-bearing main beam tightly to prevent the vehicle-mounted base from loosening in the vertical direction of the load-bearing main beam; The anti-loosening mechanism includes a weight, an eccentric shaft connecting rod, an eccentric shaft, a wedge block pair and an anti-loosening mechanism bracket; the vehicle-mounted base includes a main support frame and a vertical support frame fixedly connected together, the vertical support frame is U-shaped, and the wedge block pair is arranged in the U-shaped groove of the vertical support frame; the wedge block pair includes a fixed wedge block and a sliding wedge block, and the fixed wedge block is fixedly connected to the vertical support frame by screws; the anti-loosening mechanism bracket is fixedly connected to the load-bearing main beam by screws; the sliding wedge block is clamped in the The fixed wedge block and the anti-loosening mechanism bracket; the eccentric shaft is arranged above the sliding wedge block, and its outer circumferential surface is tangent to the top surface of the sliding wedge block; the two ends of the eccentric shaft pass through the vertical support frame and the two ends of the anti-loosening mechanism bracket in sequence, and are connected with the one-way check bearing; the one-way check bearing is fixedly installed in the bearing chamber outside the two ends of the anti-loosening mechanism bracket; one end of the eccentric shaft extends out of the one-way check bearing to connect the eccentric shaft connecting rod; the end of the eccentric shaft connecting rod is connected to the weight; The vehicle-mounted base also includes connecting ear frames, which are arranged on both sides of the vehicle-mounted base and are fixedly connected to the bearing main beam through screws.

2. The one-way check wedge mechanism for preventing loosening according to claim 1, characterized in that: The anti-loosening mechanism bracket includes a bracket back plate, which is fixedly connected to the load-bearing main beam by screws and pads, the head end of the screw is arranged on the outer side of the bracket back plate, and the tail end of the screw is screwed to the pad; connecting ear plates are provided at both ends of the bracket back plate, the vertical support is arranged between the two connecting ear plates, and the one-way check bearing is fixed in the bearing chamber outside the connecting ear plate.

3. The one-way check wedge mechanism for preventing loosening according to claim 1, characterized in that: Screw anti-loosening pads are arranged between the screw and the vertical support frame and between the screw and the anti-loosening mechanism bracket. Both ends of the screw anti-loosening pads are provided with folded edges, and the folded edges are arranged on the outside of the head of the screw to prevent the screw from reversing and loosening.

4. The one-way check wedge mechanism for preventing loosening according to claim 1, characterized in that: Reinforcing ribs are also provided between the main support frame and the vertical support frame.

5. The one-way check wedge mechanism for preventing loosening according to claim 1, characterized in that: The middle parts of the fixed wedge block and the sliding wedge block are provided with corresponding positioning and mounting holes.

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