CN218670020U

CN218670020U - Anti-loosening fastening device for oil cylinder

Info

Publication number: CN218670020U
Application number: CN202222732800.5U
Authority: CN
Inventors: 陈远和
Original assignee: Quanzhou Shangde Spring Co ltd
Current assignee: Quanzhou Shangde Spring Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-03-21
Anticipated expiration: 2032-10-17

Abstract

The application relates to the technical field of oil cylinders, in particular to an anti-loosening fastening device for an oil cylinder. The anti-loosening fastening device for the oil cylinder comprises an anti-loosening screw, an anti-loosening nut and an anti-falling piece, wherein thread grains are arranged on the surface of one side of the anti-loosening screw, the anti-loosening nut is in threaded connection with the thread grains, a notch is formed in one side of the thread grains on the anti-loosening screw, the anti-falling piece is installed on the notch in a nested mode, and the anti-falling piece is used for limiting the anti-loosening nut. The anti-loosening fastening device of the oil cylinder is matched with a simple structure to improve the installation effect. Through the structure that rationally sets up locking fastener, guarantee the stability that promotes the hydro-cylinder structure among the application. Set up notch and anticreep piece and carry out safety protection, simple structure, use have good result of use in practical application, use cost is low.

Description

Anti-loosening fastening device for oil cylinder

Technical Field

The application relates to the technical field of oil cylinders, in particular to an anti-loosening fastening device for an oil cylinder.

Background

The elongation of the entire rail results in rail frame friction, rail derailment, increased running gear noise, etc. Thereby affecting the walking performance of the excavator. Therefore, each track must be equipped with a tensioning device so that the track can always maintain a certain degree of tension. At present, the hydraulic tensioning device is widely applied to a crawler type walking device of a hydraulic excavator. Principle of hydraulic tensioner: the spring tensioner with the auxiliary hydraulic cylinder lubricates the hydraulic cylinder by injecting grease into the hydraulic cylinder through the grease gun, so that the piston extends outwards, one end of the spring tensioner moves the guide wheel, and the other end of the spring tensioner compresses the spring. After pre-tightening, the spring has a proper stroke to play a role in buffering.

The anti-loose fastening device of the oil cylinder is a part used for ensuring the structural stability of the tensioning oil cylinder in the use process. In the prior art, the connecting piece is unreasonably fastened and prevented from loosening, and after long-term use, the connecting piece is loosened due to the influence of various factors (such as vibration), so that potential safety hazards are caused.

SUMMERY OF THE UTILITY MODEL

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

In the prior art, the tensioning oil cylinder is commonly used in a crawler type walking device of an excavator, and when the crawler type walking device walks, the excavator vibrates, and the vibration is accumulated continuously to influence the connection effect of the connecting piece structure on the tensioning oil cylinder. The crawler-type traveling device can not be normally used easily because reasonable prevention is not carried out by means. And once the connecting piece of the tensioning oil cylinder is dislocated, the tensioning oil cylinder is easy to damage on one hand, and on the other hand, the tensioning oil cylinder does not work normally, and time and labor are wasted when the crawler belt collapses and is repaired.

The purpose of this application is to overcome above-mentioned not enough, provides a locking fastener of hydro-cylinder.

In order to achieve the purpose, the technical solution of the application is as follows:

the utility model provides a locking fastener of hydro-cylinder, includes locking screw, lock nut, anticreep piece, and lock screw side surface is provided with the screw thread line, and lock nut and screw thread line threaded connection are provided with the notch on the locking screw on screw thread line one side, and anticreep piece nested installs on the notch, and the anticreep piece is used for spacing lock nut. The anti-loosening fastening device for the oil cylinder is matched with a simple structure to improve the installation effect.

In some embodiments, the anti-drop member is an anti-drop ring, the anti-drop ring is provided with a separation opening, and the anti-drop ring is of a circular ring structure.

In some embodiments, the locknut is provided with a nut opening, and the radius of the outer edge of the anti-drop ring is larger than that of the nut opening. And the dislocation of the locknut is limited.

In some embodiments, the anti-slip ring has a circular cross-sectional shape.

In some embodiments, the depth of the recess is less than the cross-sectional diameter of the anti-slip ring, and the locknut is restrained by the outer edge of the anti-slip ring.

In some embodiments, the anti-loosening screw is provided with at least one notch, and the selection is flexible according to the situation.

In some embodiments, at least one anti-slip part is arranged on the notch, and the selection is flexible according to the situation.

In some embodiments, a ram anti-loosening fastening device is used for the ram.

In some embodiments, the cylinder anti-loosening fastening device is used for tensioning the cylinder.

The working principle is as follows: and one end of the anti-loosening screw, which is not provided with the thread grains, is arranged on the tensioning oil cylinder, one end of a connecting shaft of the guide wheel structure of the excavator, which is connected with the tensioning oil cylinder, is aligned with the corresponding hole position of the tensioning oil cylinder, and one side of the thread grains on the anti-loosening screw penetrates through the hole. Then, the locknut is screwed along the thread lines, and then the anti-drop ring is clamped on the notch, and the separation opening of the anti-drop ring is reduced.

Through adopting foretell technical scheme, the beneficial effect of this application is:

this application guarantees the stability that promotes the hydro-cylinder structure among the application through the structure of reasonable setting locking fastener. Set up notch and anticreep piece and carry out safety protection, simple structure, use have good result of use in practical application, use cost is low.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and not to limit the application.

In the drawings, like parts are designated with like reference numerals, and the drawings are schematic and not necessarily drawn to scale.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one or several embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to such drawings without creative efforts.

FIG. 1 is a schematic structural view of an anti-loosening fastening device for an oil cylinder according to the present application;

FIG. 2 is a side view of a cylinder anti-loose fastening device according to the present application;

fig. 3 is a schematic structural view of a locknut in the locking and fastening device for an oil cylinder according to the present application;

FIG. 4 is a schematic structural view of an anti-slip ring in the anti-loose fastening device for an oil cylinder according to the present application;

FIG. 5 is an enlarged partial view of FIG. 1 at A of the present application;

FIG. 6 is a schematic structural view of an oil cylinder anti-loose fastening device of the present application installed on an oil cylinder;

fig. 7 is a schematic structural diagram of an oil cylinder anti-loose fastening device installed for tensioning an oil cylinder according to the present application.

Description of the main reference numbers:

1. a locking screw; 11. thread lines; 12. a recess;

2. a locknut; 21. a nut port;

3. the anti-drop ring; 31. a separation port;

100. the oil cylinder anti-loose fastening device;

200. oil cylinder

300. A tensioning oil cylinder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is further described in detail with reference to the following detailed description. It should be understood that the detailed description and specific examples, while indicating the present application, are given by way of illustration only.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. However, the direct connection means that the two bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 to 5, fig. 1 is a schematic structural view of an anti-loose fastening device for an oil cylinder according to the present application; FIG. 2 is a side view of a cylinder anti-loosening fastening device according to the present application; FIG. 3 is a schematic structural view of a locknut in the locking and fastening device for the oil cylinder according to the present application;

FIG. 4 is a schematic structural view of an anti-slip ring in the anti-loose fastening device for an oil cylinder according to the present application; fig. 5 is a partially enlarged view of a portion a in fig. 1 of the present application.

This embodiment provides a locking fastener of hydro-cylinder, including lockscrew 1, locknut 2, anticreep piece, 1 side surface of lockscrew is provided with thread line 11,

locknut

2 and 11 threaded connection of thread line, and 11 one sides of thread line are provided with notch 12 on the lockscrew 1, and the anticreep piece nestification is installed on notch 12. The oil cylinder anti-loosening fastening device 100 improves the installation effect through simple structural cooperation.

According to some embodiments of the present application, optionally, the anti-slip member is an anti-slip ring 3, the anti-slip ring 3 is provided with a separation opening 31, and the anti-slip ring 3 is of a circular ring structure.

According to some embodiments of the present application, optionally, the locknut 2 is provided with a nut opening 21, and the radius of the outer edge of the anti-slip ring 3 is larger than the radius of the nut opening 21. The dislocation of the locknut 2 is limited.

According to some embodiments of the present application, optionally, the anti-drop ring 3 has a circular cross-sectional shape.

According to some embodiments of the present application, optionally, the depth of the recess 12 is smaller than the cross-sectional diameter of the anti-slip ring 3, the locknut 2 being constrained by the outer edge of the anti-slip ring 3.

According to some embodiments of the present application, optionally, at least one notch 12 is provided on the anti-loosening screw 1, and the number and size of the notches 12 are flexibly selected according to circumstances.

According to some embodiments of the present application, optionally, at least one anti-slip member is disposed on the recess 12, and the number of the anti-slip members can be flexibly selected according to the situation.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an oil cylinder anti-loose fastening device of the present application installed on an oil cylinder.

According to some embodiments of the present application, optionally, the cylinder anti-loose fastening device 100 is used for the cylinder 200.

Referring to fig. 7, fig. 7 is a schematic structural diagram of the oil cylinder anti-loose fastening device for installing a tensioning oil cylinder.

According to some embodiments of the present application, optionally, the cylinder anti-loose fastening device 100 is used for tensioning a cylinder.

When the anti-loosening device is used, one end, without the thread grains 11, of the anti-loosening screw rod 1 is installed on the tensioning oil cylinder, one end, connected with the tensioning oil cylinder, of the connecting shaft of the guide wheel structure of the excavator is aligned with the corresponding hole of the tensioning oil cylinder, and one side, with the thread grains 11, of the anti-loosening screw rod 1 penetrates through the hole. The locknut 2 is then screwed along the thread path 11, and the anti-slip ring 3 is then snapped into the recess 12, and the separation opening 31 of the anti-slip ring 3 is reduced. The unique hidden concave-convex anti-loosening structure of the device avoids the natural loosening phenomenon of the thread fastening device produced under high-frequency vibration. The stress surface of the standard fastener is increased, and the breakage damage of the nut under the impact of external force is reduced. The unnecessary manpower, financial loss that are caused by standard fastener have significantly reduced. The screw rod has increased the locking ring recess, makes the locking concave-convex structure that forms. The nut adopts 45# steel, 1000T high pressure hot forging, and is circular to combine with the hexagonal type, strengthens the atress area of nut greatly, has strengthened the inside closely knit degree of metal, improves anti impact and wear-resisting degree. The anti-loosening ring is made of high-quality spring steel and has an annular structure, and contact with the outside is reduced. The falling and damage caused by the contact with the outside in use are avoided.

It is to be understood that the embodiments disclosed herein are not limited to the particular constructions disclosed herein, but extend to equivalents thereof as would be understood by those skilled in the relevant art. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limiting.

Reference in the specification to "an embodiment" means that a particular feature, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrase or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment.

Furthermore, the described features or characteristics may be combined in any other suitable manner in one or more embodiments. In the above description, certain specific details are provided, such as thicknesses, amounts, etc., to provide a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the subject application can be practiced without one or more of the specific details, or with other structures, components, etc.

Claims

1. An anti-loose fastening device for an oil cylinder is characterized by comprising

The surface of one side of the anti-loosening screw is provided with thread lines;

the locknut is in threaded connection with the thread lines;

the anti-disengaging piece, thread line one side is provided with the notch on the locking screw, anti-disengaging piece nested installation is on the notch, the anti-disengaging piece is used for spacing locknut.

2. The anti-loose fastening device for the oil cylinder as claimed in claim 1, wherein the anti-loose piece is an anti-loose ring, the anti-loose ring is provided with a separation port, and the anti-loose ring is of a circular ring structure.

3. The anti-loosening fastening device for the oil cylinder as claimed in claim 2, wherein the locknut is provided with a nut port, and the radius of the outer edge of the anti-loosening ring is larger than that of the nut port.

4. The anti-loosening and fastening device for the oil cylinder as claimed in claim 2, wherein the cross-sectional shape of the anti-loosening ring is circular.

5. The cylinder anti-loose fastening device according to any one of claims 2 to 4, wherein the depth of the notch is smaller than the cross-sectional diameter of the anti-loose ring.

6. The oil cylinder anti-loose fastening device as claimed in any one of claims 1 to 4, wherein the anti-loose screw is provided with at least one notch.

7. The anti-loosening fastening device for the oil cylinder as claimed in any one of claims 1 to 4, wherein at least one anti-loosening element is provided on the notch.

8. The cylinder looseness-prevention fastening device according to any one of claims 1 to 4, wherein the cylinder looseness-prevention fastening device is used for a cylinder.

9. The cylinder looseness-prevention fastening device according to any one of claims 1 to 4, wherein the cylinder looseness-prevention fastening device is used for tensioning a cylinder.