CN220964294U - Moving part cable telescoping device - Google Patents
Moving part cable telescoping device Download PDFInfo
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- CN220964294U CN220964294U CN202322475883.9U CN202322475883U CN220964294U CN 220964294 U CN220964294 U CN 220964294U CN 202322475883 U CN202322475883 U CN 202322475883U CN 220964294 U CN220964294 U CN 220964294U
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- cable
- protection
- spring
- moving part
- utility
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- 230000001681 protective effect Effects 0.000 claims description 11
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a moving part cable telescoping device, which is arranged on a supporting cable of a movable supporting leg, and comprises: the protection sleeve and the protection spring are sleeved on the support cable, and the connector is used for connecting the protection spring and the protection sleeve; the utility model has effective protection function on the wiring harness of the landing leg oil pressure sensor, reduces the market maintenance and service cost, and further improves the reliability and market competitiveness of the product.
Description
Technical Field
The utility model relates to the field of engineering machinery, in particular to a moving part cable telescoping device.
Background
The wheel crane needs to stretch out the landing leg during the hoisting operation, so as to improve the hoisting performance and ensure the operation stability. The landing leg is retracted when the vehicle runs, and the vehicle runs on the road. When the crane works, signals such as pressure of each supporting leg are required to be monitored in real time, so that a relevant sensor is designed at the vertical oil cylinder of the supporting leg, a sensor wire harness is arranged inside the movable supporting leg and stretches out and draws back along with the supporting leg, and signals are transmitted to the controller. The signals can be transmitted by adopting a drag chain and a cable drum, but the schemes have high cost, and the crane with small internal space of some horizontal movable support legs cannot be installed and arranged, and the follow-up in the support leg stretching process is completed through pulleys on the horizontal support leg oil cylinders. For this type of crane, the wire harness connecting the vertical leg oil pressure sensor and the controller penetrates inside one hydraulic hose or is tied up on the hose when passing through the horizontal movable leg, improving the protection capability. There is still a risk of wear and stress damage and the lifetime is very short.
Analyzing the reason for the damage of the wiring harness of the landing leg oil pressure sensor, firstly, the movement condition inside the horizontal landing leg is as follows: as shown in figures 1-2 of the drawings,
According to fig. 2, the length of the hydraulic hose can be obtained when the horizontal leg is fully extended:
when the horizontal supporting leg is fully contracted, the length of the hydraulic hose is as follows:
The longer the horizontal cylinder extends, the greater the total deformation of the hydraulic hose. When the horizontal oil cylinder is close to full extension, the deformation of the hydraulic hose is increased sharply, a wire harness connecting the vertical support leg oil pressure sensor and the controller is made of a two-core cable, the elasticity of the cable is far smaller than that of the hose, and therefore the cable is continuously rubbed with the hydraulic hose penetrated by the cable, and the cable is easy to damage after multiple times of extension and retraction.
When the hydraulic hose is in a straight line state in a static state, the friction force is small when the cable slides in the hydraulic hose; when the hydraulic hose is in a bent state, the friction force between the cable and the hydraulic hose is large. In the moving state, the friction force between the cable and the hydraulic hose has a large variation range, so that the wire harness penetrating through the hydraulic hose is subjected to friction force and tensile force at the same time, and the possibility of damage exists.
The prior art solutions to the above problems mainly include the following two solutions:
Scheme 1: the cable drum is arranged at the tail part of the frame, so that the transmission of signals of the vertical support legs is realized;
Scheme 2: the guide wheel type is shown in fig. 1, and the cable stretches along with the support leg through the guide wheel along with the pipeline, so that the cable is protected inside the hydraulic hose or is directly tied on the hose.
However, the two solutions described above have the following problems:
scheme 1: the cost is high, the occupied space is large, and the method cannot be realized for some products with small space;
scheme 2: the cable inside the hydraulic hose is subjected to friction force and pulling force simultaneously, when the horizontal support leg is retracted from a fully extended state, the cable above the oil cylinder slides to the lower side of the oil cylinder after multiple times of telescoping due to the fact that the friction force between the cable in the hose and the hose is large, the cable above the oil cylinder is stressed more and more, and the cable is stressed at the joint to be damaged.
There is thus an urgent need to develop a new structure to solve the above problems.
Disclosure of utility model
The invention aims to solve the problem of reliable transmission and communication of a landing leg sensor in a narrow space, a cable penetrating through the inside of a protective sleeve is subjected to friction force and tensile force at the same time, after a horizontal landing leg stretches out and draws back for many times, the cable moves towards one direction, and the cable at a joint is stressed finally and has the risk of breakage, so that the cable stretching device of a moving part is provided, and the technical problem is solved.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a moving part cable telescoping device mounted on a support cable of a movable leg, comprising: the protection sleeve and the protection spring are sleeved on the support cable, and the joint is used for connecting the protection spring with the protection sleeve.
Further, the other end of the protection spring is fixed on the outer side of the spring.
Further, the through hole in the center of the protection spring is larger than the outer diameter of the cable.
The beneficial effects of the utility model are as follows: through a moving part cable telescoping device, play effectual guard action to landing leg oil pressure sensor pencil, reduce market maintenance, service cost, and then promote product reliability and market competition.
Drawings
FIG. 1 is a schematic diagram of a leg in a fully extended and fully retracted state in the prior art;
FIG. 2 is a simplified length of a hydraulic hose of the background art;
FIG. 3 is a schematic diagram of the structure of the present utility model;
In the figure: 1. a leg cable; 2. a protective spring; 3. a protective sleeve; 4. and (3) a joint.
Detailed Description
The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the detailed description and specific examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model.
As shown in fig. 3, a moving part cable telescoping device mounted on a support cable of a movable leg, comprising: the protection sleeve 3 and the protection spring 2 which are sleeved on the support cable and the joint 4 which connects the protection spring 2 with the protection sleeve 3 are arranged on the support cable, the support cable is provided with a reserved bending section, and the protection spring 2 is sleeved on the support cable bending section.
The other end of the protection spring 2 is fixed at the outer side of the spring, so that the protection spring 2 is prevented from moving along with the supporting leg cable 1; the through hole in the center of the protection spring 2 is larger than the outer diameter of the cable, so that the support leg cable 1 can move in the protection spring 2.
The two ends of the protection spring 2 are marked by ①、② in the figure, one end ① of the protection spring 2 is fixed to the connector 4, the other end ② of the protection spring 2 and the cable are fixed on the connector 4 in a natural telescopic state of the protection spring 2, when the supporting legs extend out, the cable in the protection sleeve 3 slides through the guide wheel, and a section of cable reserved in the spring is brought into the protection sleeve 3 due to the friction force between the cable and the protection sleeve 3, and meanwhile, the spring is contracted; when the legs retract, the springs resume their shape, pulling back the cable that was previously brought into the protective sleeve 3. The length of the reserved cable at the tail part of the joint 4 is kept unchanged after the oil cylinder stretches for many times, the landing leg cable 1 cannot be damaged due to excessive stress of the reserved allowance after stretching for many times, and the risk of cable damage is reduced.
The elasticity of the supporting leg cable is far smaller than that of the protective sleeve by reserving the thinking of protecting the wire harness by the buffer cable with the bending section, and the deformation of the protective sleeve when the supporting leg stretches out is counteracted by reserving the buffer cable with the bending section at the joint; the design of the protective spring is adopted to protect the cable, the elasticity of the protective spring counteracts the difference value of the friction force of the cable in the upper section and the lower section of protective sleeve of the oil cylinder, and the length of the reserved buffer cable is kept unchanged in the movement process.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the utility model.
Claims (3)
1. A moving part cable telescoping device installs on the support cable of movable leg, characterized in that includes: the protection sleeve and the protection spring are sleeved on the support cable, and the joint is used for connecting the protection spring with the protection sleeve.
2. A moving part cable retractor device according to claim 1, wherein: the other end of the protective spring is fixed on the outer side of the spring.
3. A moving part cable retractor device according to claim 1, wherein: the through hole in the center of the protective spring is larger than the outer diameter of the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322475883.9U CN220964294U (en) | 2023-09-12 | 2023-09-12 | Moving part cable telescoping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322475883.9U CN220964294U (en) | 2023-09-12 | 2023-09-12 | Moving part cable telescoping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220964294U true CN220964294U (en) | 2024-05-14 |
Family
ID=90974822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322475883.9U Active CN220964294U (en) | 2023-09-12 | 2023-09-12 | Moving part cable telescoping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220964294U (en) |
-
2023
- 2023-09-12 CN CN202322475883.9U patent/CN220964294U/en active Active
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