Stretching tool
By designing a tensile tool for hanging plate-type tensile springs, the problem of low manual tensile efficiency is solved by using the coordination of the rotating part and the screw, and a more efficient spring stretching and assembly process is achieved.
Patent Information
- Application Number
- CN202422107945.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-29
AI Technical Summary
During the assembly process, the plate-type tension spring needs to be stretched manually, resulting in low assembly efficiency and time-consuming and labor-intensive.
A stretching tool is designed, including a first support plate, a second support plate, a screw and a rotating part. The screw is driven to rotate through the rotating part to distance the distance between the first support plate and the second support plate, thereby stretching the hanging plate-type spring.
It effectively improves the spring tensile efficiency and assembly efficiency, simplifies operation, and reduces the demand for working space.
Smart Images
Figure CN223000493U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of circuit breaker assembly, and particularly relates to a stretching tooling. Background Art
[0002] When assembling a wall-mounted tension spring, the spring needs to be stretched to a certain length so that the circuit breaker can obtain a certain spring tension before working. During the assembly process of the tension spring, manual stretching is usually adopted, but manual stretching is time-consuming and laborious, with certain difficulties and extremely low assembly efficiency. Summary of the Utility Model
[0003] The purpose of this application is to provide a stretching tooling that can effectively improve the stretching efficiency of the spring and enhance the assembly efficiency.
[0004] Other features and advantages of this application will become apparent through the following detailed description, or be learned in part through the practice of this application.
[0005] According to one aspect of the embodiments of this application, this application provides a stretching tooling. The stretching tooling is used to stretch a wall-mounted spring. The wall-mounted spring includes a spring and a wall-mounted plate. Both ends of the spring are respectively connected to the wall-mounted plate. The stretching tooling includes:
[0006] A first support plate, with a first assembly port provided at one end of the first support plate;
[0007] A second support plate, with a second assembly port provided at one end of the second support plate. The first assembly port and the second assembly port are arranged on the same side and are used for assembling the wall-mounted spring. The second support plate and the first support plate are arranged relatively at intervals;
[0008] A screw rod, which is respectively passed through the first support plate and the second support plate and is respectively threadedly connected to the first support plate and the second support plate;
[0009] A rotating part, which is arranged on the screw rod and is located between the first support plate and the second support plate.
[0010] In one aspect, the screw rod is threadedly connected to one of the first support plate and the second support plate with a right-hand thread, and the other is threadedly connected with a left-hand thread.
[0011] In one aspect, the cross-sectional area of the rotating part is larger than the cross-sectional area of the screw rod.
[0012] In one aspect, the rotating part is arranged at the middle position of the screw rod, and the distance between the rotating part and the first support plate is equal to the distance between the rotating part and the second support plate.
[0013] In one aspect, the outer surface of the rotating part has a plurality of force-bearing surfaces, and the plurality of force-bearing surfaces are connected in sequence, and the adjacent two force-bearing surfaces are arranged at an angle.
[0014] In one aspect, the stretching tooling further includes a guide rod, and the guide rod is passed through the first support plate and the second support plate.
[0015] In one aspect, a plurality of guide rods are provided, and the plurality of guide rods are evenly distributed on both sides of the screw rod.
[0016] In one aspect, a first clamping groove is provided on the surface of the first support plate facing away from the second support plate, and a second clamping groove is provided on the surface of the second support plate facing away from the first support plate, and the first clamping groove and the second clamping groove are used for clamping the hanging plate.
[0017] In one aspect, the first assembly port and the second assembly port are adapted to the outer shape structure of the spring.
[0018] In one aspect, the plate surfaces of the first support plate and the second support plate are parallel to each other.
[0019] In this application, when it is necessary to stretch the spring, the hanging plate type spring is assembled in the first assembly port and the second assembly port, the hanging plate is clamped on the first support plate and the second support plate, the rotating part is rotated, and the screw rod rotates along with the rotating part, so that the screw rod rotates on the first support plate and the second support plate. The rotational force of the rotating part is applied to the first support plate and the second support plate through the screw rod, so that the distance between the first support plate and the second support plate is far away from each other. By the separation of the first support plate and the second support plate, the distance between the two hanging plates is pushed to increase, thereby stretching the spring. The technical solution of this application can effectively improve the stretching efficiency of the spring and improve the assembly efficiency.
[0020] It should be understood in this application that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0022] Figure 1 Schematically shows the structural diagram of the stretching tooling of this application.
[0023] Figure 2Schematically shows a structural schematic diagram of the stretching tooling for assembling the hanging plate type spring of the present application.
[0024] The description of the reference numerals is as follows:
[0025] 100, the first support plate; 200, the second support plate; 300, the screw rod; 400, the rotating part; 500, the guide rod; 600, the hanging plate type spring;
[0026] 110, the first assembly port; 120, the first card slot; 210, the second assembly port; 220, the second card slot; 410, the stress surface; 610, the spring; 620, the hanging plate. Specific embodiments
[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more complete and comprehensive, and will fully convey the concept of the example embodiments to those skilled in the art.
[0028] Refer to Figure 1 and Figure 2 As shown, vacuum circuit breakers often use tension springs as energy storage springs and opening springs. When round hook rings are used at the ends of the tension springs, the round hook rings may break. To solve this problem, the ends of the tension springs often adopt the form of hanging plates. That is, hanging plate type springs are used. During assembly, manually pulling is time-consuming and laborious, so the assembly of the hanging plate type springs has certain difficulties and low efficiency.
[0029] Therefore, the present application provides a stretching tooling. The stretching tooling is used to stretch the hanging plate type spring. The hanging plate type spring includes a spring and a hanging plate. The two ends of the spring are respectively connected to the hanging plate, and round hook rings can be arranged on the hanging plate. The stretching tooling includes: the first support plate 100, the second support plate 200, the screw rod 300, and the rotating part 400.
[0030] A first assembly opening 110 is provided at one end of the first support plate 100; a second assembly opening 210 is provided at one end of the second support plate 200, the first assembly opening 110 and the second assembly opening 210 are provided on the same side and are used to assemble the hanging plate spring 600. When the spring 610 is stretched, the spring 610 can be abutted against the first assembly opening 110 and the second assembly opening 210. The second support plate 200 and the first support plate 100 are arranged with a relative interval; the screw rod 300 is respectively provided through the first support plate 100 and the second support plate 200, and is respectively threadedly connected with the first support plate 100 and the second support plate 200; the rotating part 400 is provided on the screw rod 300, the rotating part 400 can be fixed on the screw rod 300, and the rotating part 400 is located between the first support plate 100 and the second support plate 200. When the spring 610 is stretched, the rotating part 400 is rotated, and the screw rod 300 can be driven to rotate through the rotating part 400. Since the screw rod 300 is threadedly connected to the first support plate 100 and the second support plate 200 respectively, the first support plate 100 and the screw rod 300 are relatively displaced by the rotation of the screw rod 300. Similarly, the second support plate 200 and the screw rod 300 are also relatively displaced.
[0031] In this embodiment, when the spring 610 needs to be stretched, the hanging plate spring 600 is assembled on the first assembly port 110 and the second assembly port 210, the hanging plate 620 is clamped on the first support plate 100 and the second support plate 200, and the rotating part 400 is rotated, and the screw rod 300 rotates with the rotating part, so that the screw rod 300 rotates on the first support plate 100 and the second support plate 200. The rotational force of the rotating part 400 is applied to the first support plate 100 and the second support plate 200 through the screw rod 300, so that the distance between the first support plate 100 and the second support plate 200 is moved away from each other. By moving the first support plate 100 and the second support plate 200 away from each other, the distance between the two hanging plates 620 is increased, thereby stretching the spring 610. The technical solution of this embodiment can effectively improve the stretching efficiency of the spring 610 and improve the assembly efficiency.
[0032] In addition, in the related technical field, a lever-type tool is usually used, in which one end of the lever-type tool is fixed on a fulcrum, and the other end is assembled on the circuit breaker by hand pulling or pressing. However, the size of the lever-type tool is large, which is not conducive to carrying, and requires a large working space. The stretching tool in this embodiment is easy to operate and occupies a small working space during operation.
[0033] In order to further save space, the side of the first support plate 100 away from the first assembly opening 110 is configured to be arc-shaped, and the side of the second support plate 200 away from the second assembly opening 210 may also be configured to be arc-shaped.
[0034] In an embodiment of the present application, one of the screw 300 and the first support plate 100 and the second support plate 200 is connected by a right-handed thread, and the other is connected by a left-handed thread.
[0035] The first support plate 100 and the second support plate 200 are provided with threaded holes corresponding to the screw 300. The screw 300 is connected to the first support plate 100 by a right-handed thread, and the screw 300 is connected to the second support plate 200 by a left-handed thread. Alternatively, the screw 300 is connected to the first support plate 100 by a left-handed thread, and the screw 300 is connected to the second support plate 200 by a right-handed thread. When the rotating part 400 is rotated forward, the first support plate 100 and the second support plate 200 move away from each other. When the rotating part 400 is rotated backward, the first support plate 100 and the second support plate 200 move closer to each other.
[0036] Alternatively, when the rotating part 400 is rotated backward, the first support plate 100 and the second support plate 200 move away from each other. When the rotating part 400 is rotated forward, the first support plate 100 and the second support plate 200 move closer to each other.
[0037] In an embodiment of the present application, the cross-sectional area of the rotating part 400 is larger than the cross-sectional area of the screw 300. That is to say, the rotating part 400 is larger in size in the radial direction of the screw 300. It is convenient to apply torque to the rotating part 400 through the larger rotating part 400. That is to say, it is convenient for the rotating part 400 to receive force.
[0038] In addition, the rotating part 400 is the main force-receiving position, that is, the concentrated force point. The larger rotating part 400 makes the structural strength of the screw 300 higher at the corresponding position, avoiding the situation that the screw 300 breaks during torsion.
[0039] In an embodiment of the present application, the rotating part 400 is arranged at the middle position of the screw 300, and the distance between the rotating part 400 and the first support plate 100 is equal to the distance between the rotating part 400 and the second support plate 200. By arranging the rotating part 400 at the middle position of the screw 300, it is possible to ensure that the torques applied to both ends of the screw 300 are equal. That is, it is possible to ensure that the acting forces on the first support plate 100 and the second support plate 200 are equal. It reduces the situation that one end of the screw 300 is stressed too much and the other end is stressed less, and avoids the situation that the end with too much stress is damaged or broken.
[0040] In an embodiment of the present application, the outer surface of the rotating part 400 has a plurality of force-receiving surfaces 410, and the plurality of force-receiving surfaces 410 are connected in sequence, and the adjacent two force-receiving surfaces 410 are arranged at an angle. The angle can be an obtuse angle or an acute angle, or a right angle.
[0041] For example, there are six force-bearing surfaces 410, and the included angle between two adjacent force-bearing surfaces 410 is an obtuse angle. The rotating part 400 forms a hexagon, and a wrench can be used to apply torque to the rotating part 400.
[0042] In an embodiment of the present application, the stretching tooling further includes a guide rod 500, and the guide rod 500 is disposed through the first support plate 100 and the second support plate 200. The guide rod 500 is parallel to the screw rod 300. By means of the guide rod 500, it can be ensured that the moving directions of the first support plate 100 and the second support plate 200 are along the axial direction of the screw rod 300, avoiding the dislocation of the first support plate 100 and the second support plate 200 during the moving process.
[0043] In an embodiment of the present application, a plurality of guide rods 500 are provided, and the plurality of guide rods 500 are evenly distributed on both sides of the screw rod 300. By providing the plurality of guide rods 500, the forces on the first support plate 100 and the second support plate 200 can be more balanced. Also, the moving directions of the first support plate 100 and the second support plate 200 can be more accurate.
[0044] For example, two guide rods 500 are provided, and the two guide rods 500 are respectively disposed on both sides of the screw rod 300. The guide rods 500 can be close to the first assembly port 110 and the second assembly port 210.
[0045] In addition, a limiting portion can also be provided on the guide rod 500, and the limiting portion is used to limit the movement of the first support plate 100 and the second support plate 200 on the guide rod 500, avoiding the first support plate 100 and the second support plate 200 from disengaging from the guide rod 500.
[0046] In an embodiment of the present application, a first card slot 120 is provided on the surface of the first support plate 100 facing away from the second support plate 200, and a second card slot 220 is provided on the surface of the second support plate 200 facing away from the first support plate 100. The first card slot 120 and the second card slot 220 are used for clamping the hanging plate 620. The positions of the first card slot 120 and the second card slot 220 are arranged in opposite directions. During the process of stretching the tension spring 610, one hanging plate 620 can be clamped in the first card slot 120, and the other hanging plate 620 can be clamped in the second card slot 220. In this way, the hanging plate type spring 600 can be relatively firmly fixed on the stretching tooling.
[0047] In an embodiment of the present application, the first assembly port 110 and the second assembly port 210 are adapted to the outer shape structure of the spring 610. For example, the outer shape of the spring 610 is arc-shaped, and the shapes of both the first assembly port 110 and the second assembly port 210 are arc-shaped.
[0048] In an embodiment of the present application, the plate surfaces of the first support plate and the second support plate are parallel to each other.
[0049] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the utility model disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application.
[0050] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.
Claims
1. A stretching tool, characterized in that: The stretching tool is used to stretch the hanging plate type spring, the hanging plate type spring includes a spring and a hanging plate, the two ends of the spring are respectively connected to the hanging plate, and the stretching tool includes: A first supporting plate, wherein a first assembly opening is provided at one end of the first supporting plate; A second support plate, wherein a second assembly opening is disposed at one end of the second support plate, the first assembly opening and the second assembly opening are disposed on the same side and are used to assemble a hanging plate spring, and the second support plate and the first support plate are disposed relatively spaced apart; Screws, the screws are respectively provided through the first support plate and the second support plate, and are respectively threadedly connected to the first support plate and the second support plate; The rotating part is arranged on the screw rod and located between the first supporting plate and the second supporting plate.
2. The stretching tool according to claim 1, characterized in that: The screw rod is connected to one of the first support plate and the second support plate by a positive thread, and the other one is connected to the other by a negative thread.
3. The stretching tool according to claim 1, characterized in that: The cross-sectional area of the rotating portion is greater than the cross-sectional area of the screw.
4. The stretching tool according to claim 3, characterized in that: The rotating part is arranged at a middle position of the screw rod, and the distance between the rotating part and the first supporting plate is equal to the distance between the rotating part and the second supporting plate.
5. The stretching tool according to claim 4, characterized in that: The outer surface of the rotating part has a plurality of force-bearing surfaces, the plurality of force-bearing surfaces are connected in sequence, and two adjacent force-bearing surfaces are arranged at an angle.
6. The stretching tool according to claim 1, characterized in that: The stretching tool further includes a guide rod, and the guide rod is penetrated through the first support plate and the second support plate.
7. The stretching tool according to claim 6, characterized in that: A plurality of guide rods are provided, and the plurality of guide rods are evenly distributed on both sides of the screw rod.
8. The stretching tool according to any one of claims 1 to 7, characterized in that: A first card slot is provided on a side of the first support plate away from the second support plate, and a second card slot is provided on a side of the second support plate away from the first support plate. The first card slot and the second card slot are used to clamp the hanging plate.
9. The stretching tool according to claim 8, characterized in that: The first assembly opening and the second assembly opening are adapted to the outer shape structure of the spring.
10. The stretching tool according to claim 1, characterized in that: The plate surfaces of the first supporting plate and the second supporting plate are parallel to each other.