A bridge shell back cover structure convenient to mount and dismount
Through the coordinated design of the drive motor and locking mechanism, the automatic unfolding and folding of the bridge housing back cover structure is realized, which solves the problems of time-consuming installation and easy wear of traditional bridge housing back cover structures, and improves construction efficiency and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN LONGSHENG AUTO PARTS CO LTD
- Filing Date
- 2025-05-19
- Publication Date
- 2026-04-24
AI Technical Summary
The installation and disassembly of traditional bridge shell back cover structures are time-consuming, especially in confined spaces or high-altitude working environments where operation is difficult. Furthermore, the connection parts are prone to wear after long-term use, affecting construction efficiency and reliability.
The design employs a collaborative approach involving a drive motor, screw, sliding block, and locking mechanism to enable automatic unfolding and folding of the bridge housing back cover structure. The coordination of the connecting and locking mechanisms simplifies the installation and disassembly process, while the cooperation of the guide rod and guide rail enhances movement stability.
It significantly improves the ease of installation and disassembly of the bridge housing back cover structure, reduces the space occupied, enhances the flexibility and reliability of use, and reduces construction and maintenance costs.
Smart Images
Figure CN224159126U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts technology, specifically a bridge housing back cover structure that is easy to install and disassemble. Background Technology
[0002] In the construction and maintenance of bridge engineering and similar structures, the bridge shell back cover, as an important structural component, is mainly used to protect internal mechanical or electrical components from the influence of the external environment, while also serving as a seal, support, and protection. Traditional bridge shell back cover structures are typically installed using bolts, welding, or other fixing methods. While these methods meet basic usage requirements, some problems have gradually emerged in practical applications. For example, traditional installation methods often require specialized tools or complex operating procedures, resulting in lengthy installation and disassembly processes and increasing the workload of construction and maintenance. Furthermore, in certain special scenarios, such as confined spaces or high-altitude work environments, the operational difficulty of traditional installation methods is further increased, affecting work efficiency and potentially posing safety hazards. Simultaneously, the design of existing bridge shell back cover structures is prone to wear or damage at connection points due to frequent disassembly and assembly during long-term use, reducing their reliability and service life. Therefore, how to design a bridge shell back cover structure that is easy to install and disassemble, thereby improving construction efficiency, reducing maintenance costs, and enhancing reliability, has become an urgent technical challenge to be solved. Utility Model Content
[0003] The purpose of this utility model is to provide a bridge housing back cover structure that is easy to install and disassemble, thus solving the problems mentioned in the background art.
[0004] This utility model is implemented as follows: a bridge housing back cover structure that is easy to install and disassemble includes a first fixed seat and a second fixed seat. A connecting mechanism is provided between the first fixed seat and the second fixed seat, and the first fixed seat and the second fixed seat are connected by the connecting mechanism. When the drive motor on the first fixed seat rotates in the forward direction, the connecting mechanism unfolds, moving the second fixed seat away from the first fixed seat and simultaneously pushing the sliding block on the second fixed seat to move, so as to achieve the purpose of synchronously unfolding the locking mechanism on the first fixed seat and the second fixed seat. A drive motor is fixedly connected inside the first fixed seat, and a screw is provided between the drive motor and the first fixed seat. One end of the screw... The screw is rotatably connected to the first fixed base, and the other end of the screw is fixedly connected to the output end of the drive motor. A support plate is fixedly connected inside the second fixed base, and a guide rod is fixedly connected to the support plate and the second fixed base. Sliding blocks are sleeved on the outside of both the guide rod and the screw. One of the sliding blocks is slidably connected to the guide rod, and the other sliding block is threadedly connected to the screw. A locking mechanism is provided on the top of the sliding block. The locking mechanism can be folded up and down. Combined with the left and right folding between the first fixed base and the second fixed base, the entire bridge housing back cover structure occupies less space, which is beneficial for its transportation and storage, and improves the flexibility and convenience of use.
[0005] Preferably, the connecting mechanism includes a first connecting rod, which is rotatably connected to a first fixed seat. A second connecting rod is rotatably connected to the top of the first connecting rod, and the second connecting rod is rotatably connected to a sliding block. The first and second connecting rods are of the same specification and are arranged in a cross pattern. There are a total of three sets of the first and second connecting rods, which are rotatably connected end to end. In the set closest to the second fixed seat, the first connecting rod is rotatably connected to the sliding block on the guide rod, while the second connecting rod is directly rotatably connected to the second fixed seat.
[0006] Preferably, both the first and second fixing seats have mounting holes inside, and each of the first and second fixing seats has two mounting holes. The mounting holes are used to insert fixing bolts, which are then used to finally lock the whole assembly.
[0007] Preferably, the locking mechanism includes a first locking plate, which is rotatably connected to a sliding block. A first transmission rod is provided between the first locking plate and a first fixed seat. Under the action of the first transmission rod, when the screw drives the sliding block to move, the first locking plate on the sliding block will be squeezed or pulled by the first transmission rod, thereby causing the first locking plate to automatically rotate upward or downward. One end of the first transmission rod is rotatably connected to the first fixed seat, and the other end of the first transmission rod is rotatably connected to the first locking plate. A first clamping plate is rotatably connected to one side of the first locking plate, and a second clamping plate is rotatably connected to the other side of the first locking plate. A second locking plate is rotatably connected between the first clamping plate and the second clamping plate. Racks are fixedly connected to the outside of both the second locking plate and the first locking plate. The two racks are connected to each other. The two parts are intermeshing. A second transmission rod is provided between the first clamping plate and the sliding block. One end of the second transmission rod is rotatably connected to the first clamping plate, and the other end of the second transmission rod is rotatably connected to the sliding block. The four positions of the first clamping plate and the sliding block, the first clamping plate and the first locking plate, and the first locking plate and the sliding block form a parallelogram, so that the second transmission rod and the first locking plate are always parallel to each other. When the first locking plate rotates, the second transmission rod pushes and pulls the first clamping plate. With the cooperation of two meshing racks, the first clamping plate drives the second locking plate to rotate around the first locking plate until the second locking plate and the first locking plate are in the same straight line or parallel to each other.
[0008] Preferably, both the first and second locking plates have internal storage cavities. A rotating shaft is rotatably connected inside each storage cavity. A coil spring is sleeved on the outside of the rotating shaft. Multiple coil springs are arranged on the rotating shaft at equal intervals. The coil springs are fixedly connected to the rotating shaft. A flexible strip is wound around the outside of the coil springs. The flexible strip is fixedly connected to the coil springs. A torsion spring is sleeved on the outside of the rotating shaft and between the storage cavity and the coil springs. One end of the torsion spring is fixedly connected to the rotating shaft, and the other end of the torsion spring is fixedly connected to the storage cavity. The torsion spring is mainly used to drive the rotating shaft to rotate automatically, and the rotating shaft then drives the coil springs to rotate and wind up the flexible strip.
[0009] Preferably, a protective cover is detachably connected to the inside of the storage cavity. The protective cover has a through groove inside, which is used in conjunction with a flexible strip. The first locking plate and the second locking plate are fixed to the protective cover by a snap-fit connection. The protective cover can seal the storage cavity on the first locking plate and the second locking plate to prevent debris from entering the storage cavity. The flexible strip extends directly to the outside through the through groove on the protective cover.
[0010] Preferably, both the first fixed seat and the second fixed seat are fixedly connected to guide rails, and the sliding block has a guide groove on the side near the guide rail. The guide groove works in conjunction with the guide rail to limit the movement of the sliding block, making the movement of the sliding block more stable.
[0011] Preferably, the second fixed seat has a sliding groove inside, and a ball bearing is rotatably connected inside the sliding groove. There are two sliding grooves, which are symmetrically distributed. When the drive motor is started, the drive motor will drive the sliding block to move through the screw. The sliding block will drive the second fixed seat to move through the connecting mechanism, so that the second fixed seat moves away from or closer to the first fixed seat, thereby realizing the automatic unfolding and folding of the whole.
[0012] Preferably, an operating switch is fixedly connected to the outside of the first fixed base, the drive motor is electrically connected to the operating switch, the electrical equipment is powered by an external power source, such as a battery, and the start, stop and forward / reverse rotation of the drive motor are controlled by the operating switch.
[0013] Beneficial effects: This utility model achieves the automatic unfolding and folding function of the bridge housing back cover structure through the coordinated action of the drive motor 3, screw 4, sliding block 7, connecting mechanism and locking mechanism 8, which significantly improves the convenience of installation and disassembly. At the same time, the compact design reduces the space occupied, and has high practicality and promotion value. Attached Figure Description
[0014] Figure 1 This is a structural diagram of the present invention;
[0015] Figure 2 This is a schematic diagram of the installation of this utility model;
[0016] Figure 3 This is a schematic diagram of the locking mechanism of this utility model.
[0017] The reference numerals in the attached drawings are as follows: 1. First fixed seat; 2. Second fixed seat; 3. Drive motor; 4. Screw; 5. Support plate; 6. Guide rod; 7. Sliding block; 8. Locking mechanism; 9. First connecting rod; 10. Second connecting rod; 11. Mounting hole; 12. First locking plate; 13. First transmission rod; 14. First clamping plate; 15. Second clamping plate; 16. Second locking plate; 17. Rack; 18. Second transmission rod; 19. Storage cavity; 20. Rotating shaft; 21. Coil spring; 22. Flexible belt; 23. Torsion spring; 24. Protective cover; 25. Through groove; 26. Guide rail; 27. Guide groove; 28. Sliding groove; 29. Ball bearing; 30. Operating switch. Detailed Implementation
[0018] This utility model provides a bridge housing back cover structure that is easy to install and disassemble. The specific implementation method is described in conjunction with the attached diagram. Figure 1 To be continued Figure 3 Please provide a detailed explanation. For example... Figure 1 As shown, the bridge housing back cover structure includes a first fixed base 1 and a second fixed base 2, which are connected and can move relative to each other through a connecting mechanism. A drive motor 3 is fixedly connected inside the first fixed base 1. The output end of the drive motor 3 is fixedly connected to one end of a screw 4, and the other end of the screw 4 is rotatably connected to the first fixed base 1. A support plate 5 is fixedly connected inside the second fixed base 2, and a guide rod 6 is fixedly connected to the support plate 5. The guide rod 6 is arranged parallel to the screw 4. Sliding blocks 7 are sleeved on the outside of the screw 4 and the guide rod 6. One sliding block 7 is threadedly connected to the screw 4, and the other sliding block 7 is slidably connected to the guide rod 6. A locking mechanism 8 is provided on the top of the sliding block 7. The locking mechanism 8 can be folded up and down, and in conjunction with the left and right folding function between the first fixed base 1 and the second fixed base 2, the entire bridge housing back cover structure occupies less space when not in use, thereby improving the convenience of transportation and storage.
[0019] The specific structure of the connecting mechanism is as follows: Figure 1 As shown, the structure includes a first connecting rod 9 and a second connecting rod 10. One end of the first connecting rod 9 is rotatably connected to the first fixed base 1, and the other end is rotatably connected to one end of the second connecting rod 10. The other end of the second connecting rod 10 is rotatably connected to the sliding block 7. The first connecting rod 9 and the second connecting rod 10 are of the same specifications and are arranged in a cross configuration. The three sets of first connecting rods 9 and second connecting rods 10 are rotatably connected end to end. In the set closest to the second fixed base 2, the first connecting rod 9 is rotatably connected to the sliding block 7 on the guide rod 6, while the second connecting rod 10 is directly rotatably connected to the second fixed base 2. When the drive motor 3 rotates in the forward direction, the screw 4 drives the sliding block 7, which is threaded to it, to move axially. The sliding block 7 pushes the second fixed base 2 away from the first fixed base 1 through the connecting mechanism. At the same time, the locking mechanism 8 on the sliding block 7 unfolds synchronously, completing the automatic unfolding process of the overall structure. When the drive motor 3 rotates in the reverse direction, the screw 4 drives the sliding block 7 to move in the reverse direction, the connecting mechanism retracts, the second fixed base 2 moves closer to the first fixed base 1, and the locking mechanism 8 folds synchronously, realizing the automatic folding of the overall structure.
[0020] The specific structure of locking mechanism 8 is as follows: Figure 2As shown, the system includes a first locking plate 12, a first transmission rod 13, a first clamping plate 14, a second clamping plate 15, a second locking plate 16, and a rack 17. The first locking plate 12 is rotatably connected to the sliding block 7. One end of the first transmission rod 13 is rotatably connected to the first fixed seat 1, and the other end is rotatably connected to the first locking plate 12. When the sliding block 7 moves along the screw 4, the first transmission rod 13 applies a pulling or squeezing force to the first locking plate 12, causing the first locking plate 12 to rotate around its rotation point with the sliding block 7. The first clamping plate 14 is rotatably connected to one side of the first locking plate 12, and the second clamping plate 15 is rotatably connected to the other side. The first clamping plate 14 and the second clamping plate 15 are rotatably connected through the second locking plate 16. Racks 17 are fixedly connected to the outside of the first locking plate 12 and the second locking plate 16, and the two racks 17 mesh with each other. A second transmission rod 18 is provided between the first clamping plate 14 and the sliding block 7. One end of the second transmission rod 18 is rotatably connected to the first clamping plate 14, and the other end is rotatably connected to the sliding block 7. The rotational positions of the second transmission rod 18 and the first locking plate 12, the first clamping plate 14 and the first locking plate 12, the first clamping plate 14 and the second transmission rod 18, and the second transmission rod 18 and the sliding block 7 form a parallelogram, ensuring that the second transmission rod 18 and the first locking plate 12 always remain parallel. When the first locking plate 12 rotates, the second transmission rod 18 pushes and pulls the first clamping plate 14. At the same time, under the meshing action of the two racks 17, the first clamping plate 14 drives the second locking plate 16 to rotate around the first locking plate 12 until the second locking plate 16 and the first locking plate 12 are in the same straight line or parallel to each other, completing the locking action.
[0021] Both the first locking plate 12 and the second locking plate 16 have internal storage cavities 19, such as... Figure 2 As shown. A rotating shaft 20 is rotatably connected inside the storage cavity 19. Multiple coil springs 21 are sleeved on the outside of the rotating shaft 20, and the coil springs 21 are evenly distributed and fixedly connected to the rotating shaft 20. A flexible strip 22 is wound around the outside of the coil springs 21 and fixedly connected to the coil springs 21. A torsion spring 23 is also sleeved on the outside of the rotating shaft 20. One end of the torsion spring 23 is fixedly connected to the rotating shaft 20, and the other end is fixedly connected to the storage cavity 19. When the flexible strip 22 is pulled, the coil springs 21 unfold accordingly, storing elastic potential energy; when the flexible strip 22 is released, the torsion spring 23 drives the rotating shaft 20 to rotate, and the coil springs 21 rewind the flexible strip 22 back into the storage cavity 19. A protective cover 24 is detachably connected to the outside of the storage cavity 19. A through groove 25 is opened inside the protective cover 24, through which the flexible strip 22 extends to the outside. The protective cover 24 is fixed to the first locking plate 12 and the second locking plate 16 by a snap-fit connection to prevent debris from entering the storage cavity 19 and to protect the internal structure.
[0022] like Figure 3As shown, both the first fixed seat 1 and the second fixed seat 2 are fixedly connected to guide rails 26. A guide groove 27 is provided inside the sliding block 7 on the side closest to the guide rail 26. The guide groove 27 works in conjunction with the guide rail 26 to limit the movement of the sliding block 7, ensuring smoother movement of the sliding block 7 on the screw 4 and guide rod 6. The second fixed seat 2 has two symmetrically distributed sliding grooves 28 inside, with ball bearings 29 rotatably connected within each groove. When the drive motor 3 starts, it drives the sliding block 7 to move via the screw 4. The sliding block 7, through a connecting mechanism, pushes the second fixed seat 2 along the sliding grooves 28. The ball bearings 29 reduce friction, making the process of the second fixed seat 2 moving away from or towards the first fixed seat 1 smoother.
[0023] An operating switch 30 is externally fixed to the first fixed base 1. The drive motor 3 is electrically connected to the operating switch 30. The electrical equipment is powered by an external power source, and the start, stop, and forward / reverse rotation of the drive motor 3 are controlled by the operating switch 30. In practical applications, the user can start the drive motor 3 via the operating switch 30. The drive motor 3 drives the screw 4 to rotate, and the sliding block 7 on the screw 4 moves axially. The sliding block 7 pushes the second fixed base 2 away from the first fixed base 1 through the connecting mechanism. At the same time, the locking mechanism 8 unfolds synchronously, completing the installation of the bridge housing back cover structure. When disassembly is required, the user again controls the drive motor 3 to rotate in the reverse direction via the operating switch 30. The screw 4 drives the sliding block 7 to move in the reverse direction, the connecting mechanism retracts, the second fixed base 2 moves closer to the first fixed base 1, and the locking mechanism 8 folds synchronously, completing the disassembly of the bridge housing back cover structure. During installation and disassembly, the flexible belt 22 can be pulled out or retracted according to actual needs, further improving the flexibility of use.
[0024] Furthermore, both the first fixing seat 1 and the second fixing seat 2 have two mounting holes 11 inside for inserting fixing bolts. These bolts provide a final lock to the overall structure, ensuring the stability of the axle housing back cover structure during use. In summary, this invention, through the coordinated action of the drive motor 3, screw 4, sliding block 7, connecting mechanism, and locking mechanism 8, achieves the automatic unfolding and folding function of the axle housing back cover structure, significantly improving the convenience of installation and disassembly. Simultaneously, its compact design reduces space occupation, making it highly practical and worthy of widespread application.
[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A bridge housing back cover structure that is easy to install and disassemble, comprising a first fixing seat (1) and a second fixing seat (2), characterized in that: A connecting mechanism is provided between the first fixed seat (1) and the second fixed seat (2). A drive motor (3) is fixedly connected inside the first fixed seat (1). A screw (4) is provided between the drive motor (3) and the first fixed seat (1). One end of the screw (4) is rotatably connected to the first fixed seat (1), and the other end of the screw (4) is fixedly connected to the output end of the drive motor (3). A support plate (5) is fixedly connected inside the second fixed seat (2). A guide rod (6) is fixedly connected between the support plate (5) and the second fixed seat (2). Sliding blocks (7) are sleeved on the outside of both the guide rod (6) and the screw (4). One of the sliding blocks (7) is slidably connected to the guide rod (6), and the other sliding block (7) is threadedly connected to the screw (4). A locking mechanism (8) is provided on the top of the sliding block (7).
2. The bridge housing back cover structure for easy installation and disassembly according to claim 1, characterized in that: The connecting mechanism includes a first connecting rod (9), which is rotatably connected to a first fixed seat (1). A second connecting rod (10) is rotatably connected to the top of the first connecting rod (9). The second connecting rod (10) is rotatably connected to a sliding block (7). The first connecting rod (9) and the second connecting rod (10) are of the same specifications and are arranged in a cross pattern. There are a total of three sets of the first connecting rod (9) and the second connecting rod (10), which are rotatably connected end to end. In the set closest to the second fixed seat (2), the first connecting rod (9) is rotatably connected to the sliding block (7) on the guide rod (6), and the second connecting rod (10) is rotatably connected to the second fixed seat (2).
3. The bridge housing back cover structure for easy installation and disassembly according to claim 1, characterized in that: The first fixing seat (1) and the second fixing seat (2) are both provided with mounting holes (11), and there are two mounting holes (11).
4. The bridge housing back cover structure for easy installation and disassembly according to claim 1, characterized in that: The locking mechanism (8) includes a first locking plate (12), which is rotatably connected to a sliding block (7). A first transmission rod (13) is provided between the first locking plate (12) and the first fixed seat (1). One end of the first transmission rod (13) is rotatably connected to the first fixed seat (1), and the other end of the first transmission rod (13) is rotatably connected to the first locking plate (12). A first clamping plate (14) is rotatably connected to one side of the first locking plate (12), and the other side of the first locking plate (12) is rotatably connected to... There is a second clamping plate (15), and a second locking plate (16) is rotatably connected between the first clamping plate (14) and the second clamping plate (15). Both the second locking plate (16) and the first locking plate (12) are fixedly connected to the outside of racks (17), and the two racks (17) mesh with each other. A second transmission rod (18) is provided between the first clamping plate (14) and the sliding block (7). One end of the second transmission rod (18) is rotatably connected to the first clamping plate (14), and the other end of the second transmission rod (18) is rotatably connected to the sliding block (7).
5. The bridge housing back cover structure for easy installation and disassembly according to claim 4, characterized in that: The first locking plate (12) and the second locking plate (16) each have a storage cavity (19) inside. A rotating shaft (20) is rotatably connected inside the storage cavity (19). A coil spring (21) is sleeved on the outside of the rotating shaft (20). The coil spring (21) is fixedly connected to the rotating shaft (20). A flexible strip (22) is wound around the outside of the coil spring (21). The flexible strip (22) is fixedly connected to the coil spring (21). A torsion spring (23) is sleeved on the outside of the rotating shaft (20) and between the storage cavity (19) and the coil spring (21). One end of the torsion spring (23) is fixedly connected to the rotating shaft (20), and the other end of the torsion spring (23) is fixedly connected to the storage cavity (19).
6. The bridge housing back cover structure for easy installation and disassembly according to claim 5, characterized in that: The storage cavity (19) is detachably connected to a protective cover (24), and the protective cover (24) has a through groove (25) inside, which is used in conjunction with a flexible strip (22).
7. The bridge housing back cover structure for easy installation and disassembly according to claim 1, characterized in that: The first fixed seat (1) and the second fixed seat (2) are both fixedly connected to the guide rail (26). The sliding block (7) has a guide groove (27) on the side close to the guide rail (26). The guide groove (27) is used in conjunction with the guide rail (26). The second fixed seat (2) has a sliding groove (28) inside. The sliding groove (28) is rotatably connected to a ball (29). There are two sliding grooves (28) and they are symmetrically distributed.