Maintenance-free constant force spring hanger

Abstract

The utility model discloses an easy maintenance constant force spring support, which aims to solve the technical problem that the auxiliary spring is directly fixed on the main body of the support in the prior art, the device needs to be disassembled as a whole when being disassembled or replaced, the operation is complex, and the maintenance time and cost are increased. The spring support comprises a U-shaped support, a rectangular mounting block is fixed at the middle position of the bottom of the U-shaped support, the bottom of the rectangular mounting block is fixed with a rectangular mounting frame, a pressure column transverse plate is slidably connected in the rectangular mounting frame, the bottom of the pressure column transverse plate is fixed with a vertical sliding column, the outer side of the top of the vertical sliding column is slidably connected with a circular sliding sheet, through the setting of the dismounting mechanism, the auxiliary spring and the knife cam can be dismounted separately, when the auxiliary spring or the knife cam needs to be checked for wear or replaced, the maintenance difficulty and time cost can be greatly reduced, long-term reliable operation is ensured, and the vertical sliding column can be dismounted in the rectangular mounting frame.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting, specifically relating to an easy-to-maintain constant force spring support hanger. Background Technology

[0002] Constant force spring supports are elastic suspension devices widely used in pipeline and equipment support systems. They are mainly used to compensate for pipeline displacement caused by thermal expansion and contraction or mechanical vibration, while providing constant support force to avoid the pipeline system bearing additional stress. Traditional constant force spring supports usually adopt a combination structure of main spring and auxiliary spring. The main spring provides the main support force, and the auxiliary spring is adjusted by a knife-shaped cam mechanism to ensure that the support can maintain a stable load output under different working conditions.

[0003] Existing structures typically fix the auxiliary spring directly to the main body of the support, requiring a complete disassembly device for disassembly or replacement, which is complex and increases maintenance time and cost. Therefore, an easy-to-maintain constant force spring support is designed to overcome the above-mentioned technical defects. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an easy-to-maintain constant force spring support bracket. This spring support bracket aims to solve the technical problem that in the existing technology, the auxiliary spring is directly fixed to the main body of the support bracket, and disassembly or replacement requires an overall disassembly device, which is complicated and increases maintenance time and cost.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides an easy-to-maintain constant force spring support bracket. The spring support bracket includes a U-shaped support bracket, a rectangular mounting block is fixed at the middle position of the bottom of the U-shaped support bracket, a rectangular mounting frame is fixed at the bottom of the rectangular mounting block, a pressure column horizontal plate is slidably connected inside the rectangular mounting frame, a vertical sliding column is fixed at the bottom of the pressure column horizontal plate, a circular sliding piece is slidably connected to the outer side of the top of the vertical sliding column, the vertical sliding column passes through the bottom end of the rectangular mounting frame and is slidably connected to the rectangular mounting frame, a main spring is provided between the pressure column horizontal plate and the circular sliding piece and located outside the vertical sliding column, a longitudinal limiting pin is slidably connected to the outer side of the rectangular mounting frame, and a longitudinal hole with clearance matching to the longitudinal limiting pin is opened inside the pressure column horizontal plate.

[0008] Both ends of the bottom of the U-shaped support are equipped with L-shaped sliding plates. The bottom of the L-shaped sliding plates is equipped with detachable L-shaped fixing plates. One end of the L-shaped fixing plate is rotatably connected to a knife-shaped cam. A detachable auxiliary spring is provided between the knife-shaped cam and the L-shaped fixing plate. The interior of the L-shaped fixing plate is equipped with a disassembly mechanism for disassembling the auxiliary spring.

[0009] Preferably, the disassembly mechanism includes a vertical pull plate, with vertical guide rods fixed on both sides of the bottom of the vertical pull plate. A vertical rigid spring is provided between the L-shaped fixing plate and the vertical pull plate, located outside the vertical guide rods. A longitudinal dovetail slider is fixed to one end of the auxiliary spring near the L-shaped fixing plate. The longitudinal dovetail slider is located inside the L-shaped fixing plate and is slidably connected to the L-shaped fixing plate. An L-shaped support seat is provided at the bottom of the L-shaped fixing plate. A longitudinal rotating shaft is fixed inside the L-shaped support seat. A knife-shaped cam is sleeved on the outside of the longitudinal rotating shaft and is movably connected to the longitudinal rotating shaft. A transverse connecting threaded rod is threaded to one end of the auxiliary spring near the knife-shaped cam. The transverse connecting threaded rod is located inside the knife-shaped cam and is rotatably connected to the knife-shaped cam via a pin.

[0010] Furthermore, the L-shaped fixing plate has a longitudinal dovetail groove inside, and the longitudinal dovetail slider is located inside the longitudinal dovetail groove and is slidably connected to the L-shaped fixing plate through the longitudinal dovetail groove.

[0011] Furthermore, the longitudinal dovetail slider has a limiting hole inside that matches the clearance of the vertical guide rod.

[0012] Furthermore, a transverse moving block is provided on the top of the L-shaped sliding plate. The transverse moving block is located inside the U-shaped support and is slidably connected to the U-shaped support. A transverse threaded rod is threaded inside the transverse moving block. One end of one of the transverse threaded rods is fixed with a handwheel. The threads of the two transverse threaded rods are in opposite directions. The connection between the two transverse threaded rods is rotatably connected to the rectangular mounting block through a bearing.

[0013] Furthermore, the rectangular mounting block has a transverse sliding groove inside, and the L-shaped sliding plate is located inside the transverse sliding groove and is slidably connected to the rectangular mounting block through the transverse sliding groove.

[0014] Furthermore, a T-shaped slider is fixed to the top of the L-shaped sliding plate, and a T-shaped groove is provided inside the transverse moving block. The L-shaped sliding plate and the transverse moving block are slidably connected through the T-shaped slider and the T-shaped groove.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention, through the setting of the disassembly mechanism, allows the auxiliary spring and the knife-shaped cam to be disassembled separately. When the auxiliary spring or the knife-shaped cam needs to be inspected for wear or replaced, it can significantly reduce the maintenance difficulty and time cost, ensuring long-term reliable operation. Furthermore, the main spring can be disassembled inside the rectangular mounting bracket. When the main spring is ineffective or needs adjustment, there is no need to disassemble the entire device, improving maintenance efficiency, avoiding the scrapping of the entire support due to partial damage, reducing spare parts costs, and making regular maintenance more convenient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the circular slider and the vertical sliding column of this utility model;

[0020] Figure 3 This is a schematic diagram of the auxiliary spring and the transverse connecting threaded rod of this utility model;

[0021] Figure 4 This is a schematic diagram of the vertical smooth rod and the vertical rigid spring of this utility model;

[0022] Figure 5 This is a schematic diagram of the transverse threaded rod and handwheel of this utility model.

[0023] The markings in the attached diagram are as follows: 1. U-shaped support bracket; 2. Rectangular mounting block; 3. Rectangular mounting frame; 4. L-shaped sliding plate; 5. L-shaped fixing plate; 6. Longitudinal limiting pin; 7. Pressure column horizontal plate; 8. Vertical sliding column; 9. Circular sliding plate; 10. Main spring; 11. Handwheel; 12. Knife-shaped cam; 13. L-shaped support seat; 14. Longitudinal rotating shaft; 15. Secondary spring; 16. Vertical pull plate; 17. Vertical smooth rod; 18. Vertical rigid spring; 19. Longitudinal dovetail slider; 20. Transverse connecting threaded rod; 21. Transverse moving block; 22. Transverse threaded rod. Detailed Implementation

[0024] This specific implementation method is an easy-to-maintain constant force spring support, and its structural diagram is shown below. Figures 1-5 As shown, the spring support includes a U-shaped support 1, a rectangular mounting block 2 fixed at the middle of the bottom of the U-shaped support 1, a rectangular mounting frame 3 fixed at the bottom of the rectangular mounting block 2, a pressure column horizontal plate 7 slidably connected inside the rectangular mounting frame 3, a vertical sliding column 8 fixed at the bottom of the pressure column horizontal plate 7, a circular sliding piece 9 slidably connected to the outer side of the top of the vertical sliding column 8, the vertical sliding column 8 passing through the bottom end inside the rectangular mounting frame 3 and slidably connected to the rectangular mounting frame 3, a main spring 10 is provided between the pressure column horizontal plate 7 and the circular sliding piece 9 and located outside the vertical sliding column 8, a longitudinal limiting pin 6 is slidably connected to the outer side of the rectangular mounting frame 3, and a longitudinal hole with clearance fit with the longitudinal limiting pin 6 is opened inside the pressure column horizontal plate 7;

[0025] Both ends of the bottom of the U-shaped support bracket 1 are provided with L-shaped sliding plates 4. The bottom of the L-shaped sliding plate 4 is provided with a detachable L-shaped fixing plate 5. One end of the L-shaped fixing plate 5 is rotatably connected to a knife-shaped cam 12. A detachable auxiliary spring 15 is provided between the knife-shaped cam 12 and the L-shaped fixing plate 5. The L-shaped fixing plate 5 is provided with a disassembly mechanism for disassembling the auxiliary spring 15.

[0026] Here, the longitudinal limiting pin 6 is pulled. When the longitudinal limiting pin 6 moves out of the interior of the pressure column horizontal plate 7, the pressure column horizontal plate 7 can slide vertically inside the rectangular mounting frame 3. When the main spring 10 needs to be disassembled, the pressure column horizontal plate 7 is pulled upward. When the vertical sliding column 8 moves out of the bottom end inside the rectangular mounting frame 3, the pressure column horizontal plate 7 and the vertical sliding column 8 can move out of the interior of the rectangular mounting frame 3, so that the main spring 10 can be easily disassembled for maintenance and replacement.

[0027] The disassembly mechanism includes a vertical pull plate 16, with vertical guide rods 17 fixed on both sides of the bottom of the vertical pull plate 16. A vertical rigid spring 18 is provided between the L-shaped fixing plate 5 and the vertical pull plate 16 and on the outside of the vertical guide rods 17. A longitudinal dovetail slider 19 is fixed to one end of the auxiliary spring 15 near the L-shaped fixing plate 5. The longitudinal dovetail slider 19 is located inside the L-shaped fixing plate 5 and is slidably connected to the L-shaped fixing plate 5. An L-shaped support seat 13 is provided at the bottom of the L-shaped fixing plate 5. A longitudinal rotating shaft 14 is fixed inside the L-shaped support seat 13. A knife-shaped cam 12 is sleeved on the outside of the longitudinal rotating shaft 14 and is movably connected to the longitudinal rotating shaft 14. A transverse connecting threaded rod 20 is threaded to one end of the auxiliary spring 15 near the knife-shaped cam 12. The transverse connecting threaded rod 20 is located inside the knife-shaped cam 12 and is rotatably connected to the knife-shaped cam 12 through a pin.

[0028] The L-shaped fixing plate 5 has a longitudinal dovetail groove inside. The longitudinal dovetail slider 19 is located inside the longitudinal dovetail groove and is slidably connected to the L-shaped fixing plate 5 through the longitudinal dovetail groove, so that the longitudinal dovetail slider 19 can slide inside the L-shaped fixing plate 5.

[0029] The longitudinal dovetail slider 19 has a limiting hole that fits with the vertical light rod 17. By setting the limiting hole, when the vertical light rod 17 enters the interior of the longitudinal dovetail slider 19, the movement of the longitudinal dovetail slider 19 inside the L-shaped fixed plate 5 is restricted. When the vertical light rod 17 moves out of the interior of the longitudinal dovetail slider 19, the longitudinal dovetail slider 19 can move inside the L-shaped fixed plate 5, so that the auxiliary spring 15 can be disassembled inside the L-shaped fixed plate 5.

[0030] When the auxiliary spring 15 needs to be disassembled, the vertical pull plate 16 is pulled upwards. The pulling of the vertical pull plate 16 allows the vertical guide rod 17 to slide vertically inside the L-shaped fixed plate 5. The movement of the vertical pull plate 16 causes the vertical rigid spring 18 to be stretched under force. When the vertical guide rod 17 moves out of the interior of the longitudinal dovetail slider 19, the restriction of the vertical guide rod 17 on the longitudinal dovetail slider 19 is released, allowing the longitudinal dovetail slider 19 to slide inside the L-shaped fixed plate 5, so that the auxiliary spring 15 can be disassembled. The knife-shaped cam 12 is pushed away from the L-shaped support 13, so that the knife-shaped cam 12 can slide outside the longitudinal rotation shaft 14, so that the knife-shaped cam 12 can move out of the interior of the L-shaped fixed plate 5. Then the auxiliary spring 15 is rotated, so that the auxiliary spring 15 can rotate out of the outer side of the transverse connecting threaded rod 20, so that the auxiliary spring 15 and the knife-shaped cam 12 can be separated, so as to facilitate the subsequent maintenance and replacement of the auxiliary spring 15 and the knife-shaped cam 12.

[0031] The top of the L-shaped sliding plate 4 is provided with a transverse moving block 21. The transverse moving block 21 is located inside the U-shaped support 1 and is slidably connected to the U-shaped support 1. The transverse moving block 21 is threaded with a transverse threaded rod 22. One end of one of the transverse threaded rods 22 is fixed with a handwheel 11. The threads of the two transverse threaded rods 22 are opposite. The connection between the two transverse threaded rods 22 is rotatably connected to the rectangular mounting block 2 through a bearing.

[0032] The rectangular mounting block 2 has a transverse sliding groove inside. The L-shaped sliding plate 4 is located inside the transverse sliding groove and is slidably connected to the rectangular mounting block 2 through the transverse sliding groove. The transverse sliding groove allows the L-shaped sliding plate 4 to enter the interior of the U-shaped support 1, thereby limiting the longitudinal displacement of the L-shaped sliding plate 4 inside the U-shaped support 1.

[0033] The top of the L-shaped sliding plate 4 is fixed with a T-shaped slider, and the interior of the transverse moving block 21 is provided with a T-shaped groove. The L-shaped sliding plate 4 and the transverse moving block 21 are slidably connected through the T-shaped slider and the T-shaped groove. Through the T-shaped slider and the T-shaped groove, the L-shaped sliding plate 4 can be installed inside the transverse moving block 21, and the transverse displacement of the L-shaped sliding plate 4 at the bottom of the transverse moving block 21 can be restricted.

[0034] Here, the handwheel 11 is rotated, which causes the two transverse threaded rods 22 to rotate, thereby allowing the two transverse moving blocks 21 to move inside the U-shaped support 1, and thus allowing the L-shaped sliding plate 4 to move inside the U-shaped support 1. After the L-shaped sliding plate 4 moves out of the U-shaped support 1, the T-shaped slider and T-shaped groove allow the L-shaped sliding plate 4 to move out of the bottom of the transverse moving block 21, so as to facilitate the disassembly of the L-shaped sliding plate 4 and the L-shaped fixing plate 5, and to facilitate the individual disassembly of the parts inside the L-shaped fixing plate 5.

[0035] Working principle: When using the spring support bracket of this technical solution, the longitudinal limiting pin 6 is pulled. When the longitudinal limiting pin 6 moves out of the interior of the pressure column horizontal plate 7, the pressure column horizontal plate 7 can slide vertically inside the rectangular mounting frame 3. When the main spring 10 needs to be disassembled, the pressure column horizontal plate 7 is pulled upward. When the vertical sliding column 8 moves out of the bottom end inside the rectangular mounting frame 3, the pressure column horizontal plate 7 and the vertical sliding column 8 can move out of the interior of the rectangular mounting frame 3, making it easy to disassemble the main spring 10 for maintenance and replacement.

[0036] When the auxiliary spring 15 needs to be disassembled, the vertical pull plate 16 is pulled upward. The pulling of the vertical pull plate 16 allows the vertical smooth rod 17 to slide vertically inside the L-shaped fixed plate 5. The movement of the vertical pull plate 16 causes the vertical rigid spring 18 to be stretched under force. When the vertical smooth rod 17 moves out of the interior of the longitudinal dovetail slider 19, the restriction of the vertical smooth rod 17 on the longitudinal dovetail slider 19 is released, allowing the longitudinal dovetail slider 19 to slide inside the L-shaped fixed plate 5, so that the auxiliary spring 15 can be disassembled. The knife-shaped cam 12 is pushed away from the L-shaped support seat 13, so that the knife-shaped cam 12 can slide outside the longitudinal rotation shaft 14, so that the knife-shaped cam 12 can move out of the interior of the L-shaped fixed plate 5. Then the auxiliary spring 15 is rotated, so that the auxiliary spring 15 can rotate out of the outer side of the transverse connecting threaded rod 20, so that the auxiliary spring 15 and the knife-shaped cam 12 can be separated, so as to facilitate the subsequent maintenance and replacement of the auxiliary spring 15 and the knife-shaped cam 12.

[0037] Rotating the handwheel 11 causes the two transverse threaded rods 22 to rotate, which in turn allows the two transverse moving blocks 21 to move inside the U-shaped support 1, and thus allows the L-shaped sliding plate 4 to move inside the U-shaped support 1. After the L-shaped sliding plate 4 moves out of the U-shaped support 1, the T-shaped slider and T-shaped groove allow the L-shaped sliding plate 4 to move out of the bottom of the transverse moving block 21, so that the L-shaped sliding plate 4 and the L-shaped fixing plate 5 can be disassembled, and the parts inside the L-shaped fixing plate 5 can be disassembled individually.

[0038] The disassembly mechanism allows the auxiliary spring 15 and the blade cam 12 to be disassembled separately. When the auxiliary spring 15 or the blade cam 12 needs to be inspected for wear or replaced, the maintenance difficulty and time cost can be greatly reduced, ensuring long-term reliable operation. The main spring 10 can be disassembled inside the rectangular mounting bracket 3. When the main spring 10 is ineffective or needs adjustment, it is not necessary to disassemble the entire device, improving maintenance efficiency, avoiding the scrapping of the entire support due to local damage, reducing spare parts costs, and making regular maintenance more convenient.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. An easy-to-maintain constant force spring support, characterized in that: The spring support includes a U-shaped support (1), a rectangular mounting block (2) is fixed at the middle of the bottom of the U-shaped support (1), a rectangular mounting frame (3) is fixed at the bottom of the rectangular mounting block (2), a pressure column horizontal plate (7) is slidably connected inside the rectangular mounting frame (3), a vertical sliding column (8) is fixed at the bottom of the pressure column horizontal plate (7), a circular sliding piece (9) is slidably connected to the outer side of the top of the vertical sliding column (8), the vertical sliding column (8) passes through the bottom end inside the rectangular mounting frame (3) and is slidably connected to the rectangular mounting frame (3), a main spring (10) is provided between the pressure column horizontal plate (7) and the circular sliding piece (9) and on the outer side of the vertical sliding column (8), a longitudinal limiting pin (6) is slidably connected to the outer side of the rectangular mounting frame (3), and a longitudinal hole with clearance fit with the longitudinal limiting pin (6) is opened inside the pressure column horizontal plate (7); Both ends of the bottom of the U-shaped support (1) are provided with L-shaped sliding plates (4), and the bottom of the L-shaped sliding plate (4) is provided with a detachable L-shaped fixing plate (5). One end of the L-shaped fixing plate (5) is rotatably connected to a knife-shaped cam (12). A detachable auxiliary spring (15) is provided between the knife-shaped cam (12) and the L-shaped fixing plate (5). The interior of the L-shaped fixing plate (5) is provided with a disassembly mechanism for disassembling the auxiliary spring (15).

2. The easy-to-maintain constant force spring support according to claim 1, characterized in that: The disassembly mechanism includes a vertical pull plate (16), on both sides of the bottom of the vertical pull plate (16) are fixed with vertical guide rods (17). A vertical rigid spring (18) is provided between the L-shaped fixing plate (5) and the vertical pull plate (16) and on the outside of the vertical guide rods (17). A longitudinal dovetail slider (19) is fixed to one end of the auxiliary spring (15) near the L-shaped fixing plate (5). The longitudinal dovetail slider (19) is located inside the L-shaped fixing plate (5) and is slidably connected to the L-shaped fixing plate (5). The bottom of the fixed plate (5) is provided with an L-shaped support seat (13), and a longitudinal rotating shaft (14) is fixed inside the L-shaped support seat (13). The knife-shaped cam (12) is sleeved on the outside of the longitudinal rotating shaft (14) and is movably connected to the longitudinal rotating shaft (14). The end of the auxiliary spring (15) near the knife-shaped cam (12) is threaded with a transverse connecting threaded rod (20). The transverse connecting threaded rod (20) is located inside the knife-shaped cam (12) and is rotatably connected to the knife-shaped cam (12) through a pin.

3. The easy-to-maintain constant force spring support according to claim 2, characterized in that: The L-shaped fixing plate (5) has a longitudinal dovetail groove inside, and the longitudinal dovetail slider (19) is located inside the longitudinal dovetail groove and is slidably connected to the L-shaped fixing plate (5) through the longitudinal dovetail groove.

4. The easy-to-maintain constant force spring support according to claim 2, characterized in that: The longitudinal dovetail slider (19) has a limiting hole inside that fits with the vertical light rod (17) with a clearance.

5. The easy-to-maintain constant force spring support according to claim 2, characterized in that: The top of the L-shaped sliding plate (4) is provided with a transverse moving block (21). The transverse moving block (21) is located inside the U-shaped support (1) and is slidably connected to the U-shaped support (1). The transverse moving block (21) is threaded with a transverse thread rod (22). One end of one of the transverse thread rods (22) is fixed with a handwheel (11). The threads of the two transverse thread rods (22) are opposite. The connection between the two transverse thread rods (22) is rotatably connected to the rectangular mounting block (2) through a bearing.

6. The easy-to-maintain constant force spring support according to claim 5, characterized in that: The rectangular mounting block (2) has a transverse sliding groove inside, and the L-shaped sliding plate (4) is located inside the transverse sliding groove and is slidably connected to the rectangular mounting block (2) through the transverse sliding groove.

7. The easy-to-maintain constant force spring support according to claim 5, characterized in that: The top of the L-shaped sliding plate (4) is fixed with a T-shaped slider, and the interior of the transverse moving block (21) is provided with a T-shaped groove. The L-shaped sliding plate (4) and the transverse moving block (21) are slidably connected by the T-shaped slider and the T-shaped groove.

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