Bellows bag spring with contact force detection

Abstract

This utility model discloses a corrugated air spring with contact force detection, including a base, a spring, and a deformation part. The spring is disposed on the base, and the deformation part is sleeved on the outside of the spring and connected to the base. The deformation part protects the spring and extends or returns synchronously with the spring. A pressure sensor is provided on the base to detect the pressure when the base undergoes elastic deformation under the compression of the spring. When the contact wire fluctuates up and down within a certain range, the corrugated air spring compresses or extends with the contact wire, ensuring that the carbon sliding plate remains in contact with the contact wire and does not detach, thus guaranteeing the best offline rate in terms of both lift and following performance.

Description

Technical Field

[0001] This utility model relates to the field of pantograph technology for electric vehicles, and in particular to a bellows air spring with contact force detection. Background Technology

[0002] The contact force between the pantograph and the overhead contact line directly affects the current collection quality, the service life of the carbon sliding plate, and the detection and maintenance of hard spots in the contact line, among other aspects. Due to the limitations of the pantograph's structure and the application environment and conditions, it is not easy to add detection equipment and its corresponding sensors at low cost without changing the pantograph's structure. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a corrugated air spring with contact force detection. When the contact wire fluctuates up and down within a certain range, the corrugated air spring compresses or extends with the contact wire, so that the carbon sliding plate is always in contact with the contact wire and does not detach. In terms of both lift and following performance, it ensures the best offline rate.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A bellows airbag spring with contact force detection includes a base, a spring, and a deformation part. The spring is disposed on the base, and the deformation part is sleeved on the outside of the spring and connected to the base.

[0006] The deformable part is used to protect the spring and extends, retracts, or resets synchronously with the spring.

[0007] The base is equipped with a pressure sensor, which is used to detect the pressure when the base undergoes elastic deformation under the compression of the spring.

[0008] Furthermore, the deformable part is a bellows.

[0009] Furthermore, the base is made of a flexible material.

[0010] Furthermore, the base is made of rubber.

[0011] Furthermore, it also includes a top cover, which is located at the other end of the deformable portion away from the base.

[0012] Furthermore, the deformable part is provided with a first ring and a second ring at both ends, the first ring being fixed to the outside of the base and the second ring being fixed to the outside of the upper cover.

[0013] Furthermore, the base is provided with an exhaust port.

[0014] Furthermore, the base is a circular plate structure, and a positioning post coaxial with it is provided on the base.

[0015] Furthermore, the base is provided with a third ring sleeve, which is coaxially and fixedly sleeved on the outer circumference of the base.

[0016] The beneficial effects of this utility model are:

[0017] When the contact wire fluctuates up and down within a certain range, the corrugated tube air spring compresses or extends along with the contact wire, ensuring that the carbon sliding plate remains in contact with the contact wire and does not detach. This guarantees the best offline rate in terms of both lift and following performance. Attached Figure Description

[0018] Figure 1 This is a perspective view of the bellows airbag spring with contact force detection in an embodiment of this utility model;

[0019] Figure 2 An exploded view of a bellows air spring with contact force detection.

[0020] In the diagram, 1 is the base; 2 is the spring; 3 is the deformation part; 4 is the pressure sensor; 5 is the top cover; 6 is the first ring; 7 is the second ring; 8 is the third ring; 9 is the vent; 10 is the positioning post; and 11 is the third ring. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] See Figures 1-2 This utility model provides a technical solution:

[0023] Example:

[0024] like Figure 1 and Figure 2 As shown, a bellows airbag spring with contact force detection includes a base 1, a spring 2 (the spring 2 is a rigid spring 2) and a deformation part 3. The spring 2 is disposed on the base 1, and the deformation part 3 is sleeved on the outside of the spring 2 and connected to the base 1.

[0025] The deformation part 3 (the deformation part 3 is a bellows or a bellows airbag) is used to protect the spring 2 and to extend, retract, or reset synchronously with the spring 2.

[0026] The base 1 may be, but is not limited to, supported by a flexible rubber material. A pressure sensor 4 is provided on the base 1, which detects the pressure exerted when the base 1 undergoes elastic deformation under the compression of the spring 2. An exhaust port 9 is provided on the base 1.

[0027] like Figure 2 As shown, it also includes an upper cover 5, which is disposed at the other end of the deformable part 3 away from the base 1. The upper cover 5 is used to seal the upper end of the deformable part 3, and the base 1 is used to support the spring 2 and seal the lower end of the deformable part 3.

[0028] The deformable part 3 has a first ring 6 and a second ring 7 at both ends. The first ring 6 is fixed to the outside of the base 1, and the second ring 7 is fixed to the outside of the upper cover 5.

[0029] The base 1 is a circular plate structure, and a positioning column 10 coaxial with it is provided on the base 1.

[0030] The base 1 is provided with a third ring sleeve 8, which is coaxially fixedly sleeved on the outer circumference of the base 1. The third ring sleeve 8 is used to limit the spring 2 and prevent the spring 2 from being misaligned; the third ring sleeve 8, the base 1, and the positioning post 10 are an integrated structure, and the three are integrally formed.

[0031] The sensor is a flexible structure.

[0032] In use, four bellows air springs 2 from this design are used to support the carbon sliding plate on the pantograph head.

[0033] Since the base 1 is made of flexible material, when the carbon sliding plate on the pantograph is pressed down, the spring 2 is also pressed down on the flexible base 1. The base 1 deforms under the force, and the sensor on the base 1 also deforms, thereby realizing the pressure change between the carbon sliding plate and the contact wire.

[0034] When the contact wire fluctuates up and down within a certain range, the corrugated air spring 2 compresses or extends along with the contact wire, ensuring that the carbon sliding plate remains in contact with the contact wire and does not detach, thus guaranteeing the best offline rate in terms of both lift and following performance.

[0035] The bellows air spring with contact force detection of this utility model not only has the characteristic of allowing the carbon sliding plate to follow the height change of the contact wire, but also can detect the pressure change between the carbon sliding plate and the wire. This lays a solid foundation for subsequent intelligent pantographs and provides a guarantee for pantograph-contact wire maintenance.

[0036] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A bellows bladder spring with contact force detection, characterized by: It includes a base, a spring, and a deformation part, wherein the spring is disposed on the base, and the deformation part is sleeved on the outside of the spring and connected to the base; The deformable part is used to protect the spring and extends, retracts, or resets synchronously with the spring. The base is equipped with a pressure sensor, which is used to detect the pressure when the base undergoes elastic deformation under the compression of the spring.

2. The bellows bladder spring with contact force detection of claim 1, wherein: The deformable part is a bellows.

3. The bellows bladder spring with contact force detection of claim 1, wherein: The base is made of a flexible material.

4. The bellows bladder spring with contact force detection of claim 3, wherein: The base is made of rubber.

5. The bellows bladder spring with contact force detection of claim 1, wherein: It also includes a top cover, which is located at the other end of the deformable part away from the base.

6. The bellows air spring with contact force detection according to claim 5, characterized in that: The deformable part is provided with a first ring and a second ring at both ends. The first ring is fixed to the outside of the base, and the second ring is fixed to the outside of the upper cover.

7. The bellows air spring with contact force detection according to claim 6, characterized in that: The base is equipped with an exhaust vent.

8. The bellows air spring with contact force detection according to claim 7, characterized in that: The base is a circular plate structure, and a positioning column coaxial with it is provided on the base.

9. The bellows air spring with contact force detection according to claim 8, characterized in that: The base is provided with a third ring sleeve, which is coaxially and fixedly sleeved on the outer circumference of the base.

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