Torsion spring with head matching assembly type structure

Abstract

The utility model belongs to the technical field of torsion springs, and particularly relates to a torsion spring with a head matching assembly type structure, which comprises a torsion spring body, torsion spring connecting seats are arranged at two ends of the torsion spring body, fixing blocks are connected inside the torsion spring connecting seats, through holes are arranged on the outer walls of the fixing blocks, and limit pins penetrate through the torsion spring body. According to the torsion spring, the end of the torsion spring body is plugged into the groove between the torsion spring connecting base and the fixing block, then the limiting pin is inserted from one side of the torsion spring body, penetrates out of the other side of the torsion spring body, is sleeved with the cushion block and then is locked and fixed through the locking nut, the locking nut is screwed off, and then the limiting pin is pulled out of the torsion spring body. At the moment, the end of the torsion spring body can be directly taken out of the groove due to the fact that the end of the torsion spring body is not limited by the limiting pin, and therefore the torsion spring assembled in the mode can be conveniently and rapidly installed and disassembled, later maintenance is facilitated, replacement of independent components is achieved, and maintenance cost is saved.

Description

Technical Field

[0001] This utility model belongs to the field of torsion spring technology, specifically relating to a torsion spring with a head-fitting assembly structure. Background Technology

[0002] A torsion spring undergoes elastic deformation under load and returns to its original shape when the load is removed. Its working principle is based on the lever principle, using the twisting or rotating of a soft, highly resilient elastic material to impart significant mechanical energy. The end structure of a torsion spring can be machined into various shapes of torsion arms to adapt to different design requirements, while the head of the torsion spring requires a connecting seat for installation and fixation.

[0003] Currently, existing torsion spring assembly structures are usually connected and fixed by welding. Although this method is relatively stable, after long-term use, some parts may wear out and need to be replaced. Since welded torsion springs cannot be disassembled, they need to be completely replaced, which increases maintenance costs. Utility Model Content

[0004] The purpose of this utility model is to provide a torsion spring with a head-fitting assembly structure, which aims to solve the problem that the existing torsion spring assembly structures are usually connected and fixed by welding. Although this method of connection is relatively stable, after long-term use, some parts may wear out and need to be replaced. Since welded torsion springs cannot be disassembled, they need to be completely replaced, thus increasing maintenance costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a torsion spring with a head-fitting assembly structure, comprising a torsion spring body, torsion spring connecting seats at both ends of the torsion spring body, a fixing block connected inside the torsion spring connecting seat, a through hole on the outer wall of the fixing block, a limit pin passing through the torsion spring body, and locking nuts threaded to both ends of the limit pin.

[0006] As a preferred embodiment of the torsion spring with a head-fitting assembly structure of this utility model, a pad is provided between the locking nut and the torsion spring body.

[0007] As a preferred embodiment of the torsion spring with a head-fitting assembly structure of this utility model, the contact surface between the pad and the torsion spring body is arc-shaped.

[0008] As a preferred embodiment of the torsion spring with a head-fitting assembly structure of this utility model, the limiting pin can penetrate the fixing block through the through hole.

[0009] As a preferred embodiment of the torsion spring with a head-fitting assembly structure of the present invention, the end of the torsion spring body is located in the groove between the torsion spring connecting seat and the fixing block.

[0010] In a preferred embodiment of the torsion spring with a head-fitting assembly structure according to this utility model, the middle part of the limiting pin penetrates through the end of the torsion spring body.

[0011] As a preferred embodiment of the torsion spring with a head-fitting assembly structure of the present invention, the outer wall of the torsion spring connecting seat is provided with an annular groove, and a wear-resistant ring is provided inside the annular groove.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] By inserting the end of the torsion spring body into the groove between the torsion spring connecting seat and the fixing block, then inserting the limiting pin from one side of the torsion spring body, passing it through the end of the torsion spring connecting seat and the through hole respectively, and then exiting from the other side of the torsion spring body, then placing the pad on both ends of the limiting pin, and finally threading the lock nut to the end of the limiting pin to lock it, and then unscrewing the lock nut and pulling the limiting pin out of the torsion spring body, the end of the torsion spring body can be directly removed from the groove since there is no longer a limiting pin restricting it. Thus, the torsion spring assembled in the above manner can be easily installed and disassembled, which is beneficial for later maintenance and allows for the replacement of individual components, saving maintenance costs. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0018] Figure 4 This is an enlarged structural schematic diagram of the present invention.

[0019] In the diagram: 1. Torsion spring body; 2. Torsion spring connecting seat; 3. Fixing block; 4. Through hole; 5. Limiting pin; 6. Locking nut; 7. Washer block; 8. Annular groove; 9. Wear-resistant ring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-4 The present invention provides the following technical solution: a torsion spring with a head-fitting assembly structure, including a torsion spring body 1, torsion spring connecting seats 2 at both ends of the torsion spring body 1, a fixing block 3 connected inside the torsion spring connecting seat 2, a through hole 4 on the outer wall of the fixing block 3, a limit pin 5 through the torsion spring body 1, and a locking nut 6 threadedly connected to both ends of the limit pin 5.

[0022] It should be noted that the torsion spring body 1 has mounting holes distributed in a ring for subsequent connection and fixation. The torsion spring body 1 is usually made of spring steel and is spiral in shape. It stores and releases angular energy by rotating the lever arm around the central axis of the spring body, generating resistance to rotation or external rotational forces, and can control the movement of machine parts, mitigate impacts or vibrations, and store energy.

[0023] Preferably, a pad 7 is provided between the locking nut 6 and the torsion spring body 1. The contact surface between the pad 7 and the torsion spring body 1 is arc-shaped. The limiting pin 5 can pass through the fixing block 3 through the through hole 4. The end of the torsion spring body 1 is located in the groove between the torsion spring connecting seat 2 and the fixing block 3. The middle part of the limiting pin 5 passes through the end of the torsion spring body 1.

[0024] It should be noted that the arc-shaped contact surface between the pad 7 and the torsion spring body 1 allows the pad 7 to fit more closely to the outer wall of the torsion spring body 1, while the flat contact surface between the pad 7 and the locking nut 6 is more stable than the arc-shaped contact between the locking nut 6 and the outer wall of the torsion spring connecting seat 2.

[0025] In practical use, the end of the torsion spring body 1 is inserted into the groove between the torsion spring connecting seat 2 and the fixing block 3. Then, the limiting pin 5 is inserted from one side of the torsion spring body 1, and then passes through the end of the torsion spring connecting seat 2 and the through hole 4 respectively, and then passes out from the other side of the torsion spring body 1. Then, the pad 7 is placed on both ends of the limiting pin 5. Finally, the locking nut 6 is threadedly connected to the end of the limiting pin 5 and locked. Thus, the torsion spring assembled in the above way can be easily disassembled for later maintenance, thereby realizing the replacement of individual parts.

[0026] When disassembly is required, simply unscrew the locking nut 6 and pull the limiting pin 5 out of the torsion spring body 1. At this time, the end of the torsion spring body 1 can be directly removed from the groove since the limiting pin 5 is no longer in place.

[0027] Preferably, the outer wall of the torsion spring connecting seat 2 is provided with an annular groove 8, and a wear-resistant ring 9 is provided inside the annular groove 8.

[0028] In practical use, by setting the wear-resistant ring 9, when the torsion spring connecting seat 2 is connected to the object, the wear-resistant ring 9 can reduce the wear on the contact surface between the torsion spring connecting seat 2 and the object.

[0029] Working principle: First, during assembly, insert the end of the torsion spring body 1 into the groove between the torsion spring connecting seat 2 and the fixing block 3. Then, insert the limiting pin 5 from one side of the torsion spring body 1, pass through the end of the torsion spring connecting seat 2 and the through hole 4 respectively, and then exit from the other side of the torsion spring body 1. Next, put the pad 7 on both ends of the limiting pin 5. Finally, thread the locking nut 6 to the end of the limiting pin 5 and lock it. During disassembly, unscrew the locking nut 6 and pull the limiting pin 5 out of the torsion spring body 1. At this time, the end of the torsion spring body 1 can be directly taken out from the groove because the limiting pin 5 is no longer restricting it. Thus, the torsion spring assembled in the above way can be easily installed and disassembled, which is beneficial for later maintenance and allows for the replacement of individual parts, saving maintenance costs.

[0030] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A torsion spring with a head-fitting assembly structure, comprising a torsion spring body (1), characterized in that: The torsion spring body (1) is provided with torsion spring connecting seats (2) at both ends. The torsion spring connecting seats (2) are connected to a fixing block (3). The fixing block (3) has a through hole (4) on its outer wall. The torsion spring body (1) is connected to a limit pin (5). The two ends of the limit pin (5) are threaded with locking nuts (6).

2. A torsion spring with a head-fitting assembly structure according to claim 1, characterized in that: A pad (7) is provided between the locking nut (6) and the torsion spring body (1).

3. A torsion spring with a head-fitting assembly structure according to claim 2, characterized in that: The contact surface between the pad (7) and the torsion spring body (1) is arc-shaped.

4. A torsion spring with a head-fitting assembly structure according to claim 1, characterized in that: The limiting pin (5) can pass through the fixing block (3) through the through hole (4).

5. A torsion spring with a head-fitting assembly structure according to claim 1, characterized in that: The end of the torsion spring body (1) is located in the groove between the torsion spring connecting seat (2) and the fixing block (3).

6. A torsion spring with a head-fitting assembly structure according to claim 1, characterized in that: The middle part of the limiting pin (5) passes through the end of the torsion spring body (1).

7. A torsion spring with a head-fitting assembly structure according to claim 1, characterized in that: The outer wall of the torsion spring connecting seat (2) is provided with an annular groove (8), and a wear-resistant ring (9) is provided inside the annular groove (8).

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