Volute spiral spring fixing structure, elastic winding mechanism and rope winder

Abstract

The utility model relates to the technical field of rope winders, in particular to a volute spiral spring fixing structure, an elastic winding mechanism and a rope winder, which comprises a fixing body and a fixing part, and the fixing part is arranged in the circumferential direction of the fixing body and used for fixing an inner end hook of a volute spiral spring; the fixing body comprises a first body and a second body, a gap is formed between the first body and the second body, one end of the gap is a free end, and the other end of the gap is a blind end; a first through hole is formed in the first body, a second through hole is formed in the second body, the first through hole and the second through hole are coaxially formed, and the extending direction of the first through hole and the extending direction of the second through hole are orthogonal to the extending direction of the gap; a deformation driving mechanism is further arranged on the fixing body and used for changing the coaxiality of the first through hole and the second through hole. The deformation driving mechanism enables the first body and the second body to deform, the first through hole and the second through hole are not coaxial any more, the friction force between the inner walls of the first through hole and the second through hole and the fixing shaft is increased, and the situation that the volute spiral spring is overloaded or even broken is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rope winder technology, and in particular to a spiral spring fixing structure, an elastic winding mechanism, and a rope winder. Background Technology

[0002] The current collector plays a crucial role in the operation of trolleybuses, and the rope winder is one of the essential components of the current collector, mainly used for winding the pull rope of the current collector pole. In the existing technology, the rope storage wheel of the current collector is driven by the energy stored in a planar spiral spring to wind the pull rope.

[0003] When the pull rope needs to be replaced, the spiral spring must be able to disengage from its inner fixed end to allow the rope reel to rotate freely in the winding direction. Currently, the common practice is to install a one-way clutch inside the spiral spring. Specifically, the inner end of the spring body is bent or rolled to form an inner hook, or a pawl (actually a modified structure that functions as a pawl) is formed by welding or riveting wedges. The inner hook of the spring body is then fitted onto the ratchet, achieving a one-way engagement between the ratchet and the inner end of the spring body. This structural design allows the spiral spring to store energy during rope unwinding and release energy during rope winding, thus completing the rope unwinding and winding operations. Furthermore, existing technology also uses a one-way bearing to replace the function of the pawl and ratchet, an improved structure that makes the rotation of the rope reel smoother.

[0004] However, in practical applications, different customers face numerous problems when using the current collector rope reel in trolleybuses. For example, due to factors such as untimely maintenance, failure to replace the pull rope as required, and harsh operating environments, the planar spiral spring in the rope reel frequently experiences overload or even breakage, while the pawl is also prone to deformation. These problems not only affect the normal use of the current collector rope reel, reducing its working efficiency and reliability, but also increase equipment maintenance costs and downtime, adversely impacting the safe and stable operation of trolleybuses. Therefore, a new technical solution is urgently needed to address the aforementioned problems existing in current trolleybus current collector rope reels. Utility Model Content

[0005] In order to solve the above-mentioned technical problems in the prior art, this utility model provides a spiral spring fixing structure, an elastic winding mechanism, and a rope winder.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0007] The first aspect of this utility model is to provide a spiral spring fixing structure, including a fixing body and a fixing member. The fixing member is disposed circumferentially on the fixing body and is used to fix the inner end hook of the spiral spring. The fixing body includes a first body and a second body, with a gap between the first body and the second body. One end of the gap is a free end, and the other end is a blind end. A through hole one is provided on the first body, and a through hole two is provided on the second body. The through hole one and the through hole two are coaxially arranged, and the extending directions of the through hole one and the through hole two are orthogonal to the extending direction of the gap. The fixing body is also provided with a deformation driving mechanism, which is used to change the coaxiality of the through hole one and the through hole two.

[0008] The spiral spring fixing structure provided by this utility model uses a deformation driving mechanism to deform the first body and the second body. The first through hole and the second through hole are no longer coaxial. The inner walls of the first through hole and the second through hole are tightly fitted with the fixing shaft. The friction between the inner walls of the first through hole and the second through hole and the fixing shaft increases, thereby locking the spiral spring fixing structure, that is, locking the spiral spring. The value of the friction can be set by adjusting the deformation, avoiding overload or even breakage of the spiral spring.

[0009] Based on the above technical solution, the present invention can also be improved in the following ways:

[0010] Furthermore, the deformation driving mechanism includes a through hole three, a threaded hole and a bolt. The through hole three is formed on the first body, and the threaded hole is formed on the second body. The through hole three and the threaded hole are coaxially arranged.

[0011] The beneficial effect of adopting the above-mentioned further technical solution is that: the bolt passes through the through hole three and is screwed into the threaded hole. The bolt squeezes the first body and the second body to produce deformation, so that the first body and the second body move closer to each other. The through hole one and the through hole two are no longer coaxially set, thereby increasing the friction between the inner wall of the through hole one and the through hole two and the fixed shaft.

[0012] Furthermore, the fixing element is a one-way tooth.

[0013] The beneficial effect of adopting the above-mentioned further technical solution is that the one-way tooth and the inner end hook of the spiral spring are set to achieve engagement and fixation.

[0014] Furthermore, at least one fixing member is provided, and when the number of fixing members is greater than one, each fixing member is evenly and / or spaced apart around the circumference of the fixing body.

[0015] The second aspect of this utility model is to provide an elastic winding mechanism, including the above-mentioned spiral spring fixing structure.

[0016] Furthermore, it also includes a spiral spring, a mounting component, a fixed shaft, and a rope storage wheel. The fixed shaft is fixed to the mounting component. The spiral spring fixing structure is sleeved on the fixed shaft through through hole one and through hole two. The spiral spring includes an inner end hook and an outer end hook. The inner end hook is disposed on the fixed component, and the outer end hook is disposed on the rope storage wheel.

[0017] Another aspect of this utility model is to provide a rope winder, including the above-mentioned elastic winding mechanism.

[0018] Compared with the prior art, the present invention has the following technical effects:

[0019] The spiral spring fixing structure provided by this utility model, by setting a deformation driving mechanism, causes the first body and the second body to deform. The first through hole and the second through hole are no longer coaxially set. The inner walls of the first through hole and the second through hole are tightly fitted with the fixing shaft. The friction between the inner walls of the first through hole and the second through hole and the fixing shaft is increased, thereby realizing the locking of the spiral spring fixing structure, that is, realizing the locking of the spiral spring. The value of friction can be set by adjusting the deformation, avoiding the spiral spring from overload or even breakage. It can achieve the problem of spring overload and breakage in the rope winder with minimal cost. Attached Figure Description

[0020] Figure 1 This diagram shows a schematic diagram of the spiral spring fixing structure according to Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the spiral spring fixing structure of Embodiment 1 of the present invention from another angle;

[0022] Figure 3 A cross-sectional view of the spiral spring fixing structure of Embodiment 1 of this utility model is shown;

[0023] Figure 4 This shows a cross-sectional view of the spiral spring fixing structure after deformation according to Embodiment 1 of this utility model;

[0024] Figure 5 A schematic diagram of the spiral spring structure is shown;

[0025] Figure 6 Showing the front view of the spiral spring;

[0026] Figure 7 This diagram shows the connection between the spiral spring fixing structure and the spiral spring in Embodiment 1 of this utility model.

[0027] Figure 8 A schematic diagram of the elastic winding mechanism of Embodiment 2 of this utility model is shown.

[0028] Figure label:

[0029] 1. Scroll spring fixing structure; 2. Fixing body; 3. Fixing component; 4. First body; 5. Second body; 6. Through hole one; 7. Through hole two; 8. Through hole three; 9. Threaded hole; 10. Bolt; 11. Scroll spring; 12. Inner end hook; 13. Outer end hook; 14. Mounting component; 15. Fixing shaft; 16. Rope storage wheel. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0031] Example 1

[0032] See Figure 1-4 A spiral spring fixing structure 1 includes a fixing body 2 and a fixing member 3. The fixing member 3 is disposed circumferentially on the fixing body 2 and is used to fix the inner end hook 12 of the spiral spring 11. The fixing body 2 includes a first body 4 and a second body 5, with a gap between the first body 4 and the second body 5. One end of the gap is a free end, and the other end is a blind end. A through hole 6 is provided on the first body 4, and a through hole 7 is provided on the second body 5. The through hole 6 and the through hole 7 are coaxially arranged, and the extension of the through hole 6 and the through hole 7 is... The extension direction is orthogonal to the extension direction of the gap; the fixed body 2 is also provided with a deformation driving mechanism, which is used to change the coaxiality of through hole 1 6 and through hole 2 7; the deformation driving mechanism includes through hole 3 8, threaded hole 9 and bolt 10, through hole 3 8 is opened on the first body 4, threaded hole 9 is opened on the second body 5, through hole 3 8 and threaded hole 9 are coaxially arranged, when bolt 10 is screwed into threaded hole 9 through through hole 3 8, the tightening force of screw 10 forces the first body 4 and the second body 5 to deform, such as Figure 4As shown, the first body 4 and the second body 5 come together, and the first through hole 6 and the second through hole 7 are not coaxial, that is, the angle θ changes from 180 degrees to less than 180 degrees. The deformed first through hole 6 and the second through hole 7 press against the fixed shaft 15, increasing the friction between the first through hole 6, the second through hole 7 and the fixed shaft 15, thereby strengthening the fixation of the spiral spring 11 by the spiral spring fixing structure 1.

[0033] The fixing member 3 is a one-way tooth, and there are three one-way teeth. The three one-way teeth are evenly and spaced apart on the circumference of the fixing body 2, and the three one-way teeth have the same direction of rotation, which is used to fix the spiral spring 11.

[0034] Example 2

[0035] See Figure 5-8 An elastic winding mechanism includes a spiral spring fixing structure 1, a spiral spring 11, a mounting component 14, a fixing shaft 15, and a rope storage wheel 16. The fixing shaft 15 is fixed to the mounting component 14. The spiral spring fixing structure 1 is sleeved on the fixing shaft 15 through a first through hole 6 and a second through hole 7. The spiral spring 11 includes an inner end hook 12 and an outer end hook 13. The inner end hook 12 is disposed on the fixing component 3, and the outer end hook 13 is disposed on the rope storage wheel 16.

[0036] The inner diameters of the first through hole 6 and the second through hole 7 are adapted to the outer diameter of the fixed shaft 15. When the bolt 10 passes through the third through hole 8 and is screwed into the threaded hole 9, the first through hole 6 and the second through hole 7 deform and become non-coaxial. The deformed first through hole 6 and the second through hole 7 press against the fixed shaft 15, increasing the friction between the first through hole 6, the second through hole 7 and the fixed shaft 15, thereby strengthening the fixation of the spiral spring 11 by the spiral spring fixing structure 1, and further strengthening the locking and fixing of the spiral spring 11, thus preventing the spiral spring 11 from being overloaded or even broken.

[0037] 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, improvements, etc., 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 spiral spring fixing structure, characterized in that, The device includes a fixed body and a fixing member. The fixing member is located circumferentially on the fixed body and is used to fix the inner end hook of the spiral spring. The fixed body includes a first body and a second body, with a gap between them. One end of the gap is a free end, and the other end is a blind end. The first body has a through hole one, and the second body has a through hole two. The through hole one and the through hole two are coaxially arranged, and the extending directions of the through hole one and the through hole two are orthogonal to the extending direction of the gap. The fixed body is also provided with a deformation driving mechanism, which is used to change the coaxiality of the through hole one and the through hole two.

2. The spiral spring fixing structure according to claim 1, characterized in that, The deformation driving mechanism includes a through hole three, a threaded hole and a bolt. The through hole three is formed on the first body and the threaded hole is formed on the second body. The through hole three and the threaded hole are coaxially arranged.

3. The spiral spring fixing structure according to claim 1, characterized in that, The fixing element is a one-way tooth.

4. The spiral spring fixing structure according to any one of claims 1 to 3, characterized in that, At least one fixing member is provided. When the number of fixing members is greater than one, the fixing members are evenly and / or spaced apart around the circumference of the fixing body.

5. A flexible winding mechanism, characterized in that, The spiral spring fixing structure includes any one of claims 1 to 4.

6. The flexible winding mechanism according to claim 5, characterized in that, It also includes a spiral spring, a mounting component, a fixed shaft, and a rope storage wheel. The fixed shaft is fixed to the mounting component. The spiral spring fixing structure is sleeved on the fixed shaft through through hole one and through hole two. The spiral spring includes an inner end hook and an outer end hook. The inner end hook is provided on the fixed component, and the outer end hook is provided on the rope storage wheel.

7. A rope reel, characterized in that, Includes the flexible winding mechanism as described in claim 5 or 6.

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