Portable track widening pin

Abstract

The utility model discloses a portable track widening pin which comprises a pin shaft, the pin shaft is sleeved in a pin sleeve, the pin shaft and the pin sleeve are limited through a positioning piece, and the pin shaft is provided with a track groove enabling the pin shaft to rotate by 180 degrees. The pin shaft rotates 180 degrees in the track groove by rotating the handle clockwise to protrude out of the pin sleeve, the protruding pin shaft is inserted into corresponding holes of the lower vehicle side plate and the H frame, locking is achieved, potential safety hazards are eliminated, and due to the fact that the pin shaft is located in the pin sleeve all the time, the structure is simple, safety and reliability are achieved, and the pin shaft is not prone to being lost.

Description

Technical Field

[0001] The utility model relates to a widening pin, in particular to a portable crawler widening pin. Background Art

[0002] In construction equipment with crawler widening function, when the crawler is fully extended for work and fully retracted for transportation, the crawler widening pin must be inserted and locked to ensure the safety in the extended state and retracted state of the crawler, preventing equipment failures and accidents caused by unstable crawler connection; during the process of crawler extension and retraction, the crawler widening pin must be pulled out. However, the pulled-out crawler widening pin is heavy, and there will be potential safety hazards if it is placed in other positions of the equipment. After the crawler is extended or retracted, the crawler widening pin needs to be inserted and locked again. This method not only requires more labor to insert and pull out the widening pin, which is very cumbersome, but also has potential safety hazards. Summary of the Utility Model

[0003] The utility model provides a portable crawler widening pin to overcome the defect that in the prior art, inserting or pulling out the widening pin manually is required in the extended state and retracted state of the crawler, which has potential safety hazards.

[0004] To solve the above technical problems, the utility model provides the following technical solutions:

[0005] The utility model discloses a portable crawler widening pin, which includes a pin shaft sleeved in a pin sleeve and limited by a positioning member. A track groove for the pin shaft to rotate 180° is provided on the pin sleeve.

[0006] Further, a handle for rotation is provided at the bottom of the pin shaft.

[0007] Further, the track groove is an inclined groove with a height difference, and the travel range of the track groove is the diameter of the pin sleeve.

[0008] Further, the positioning member is a screw, and the pin shaft rotates in the track groove of the pin sleeve by the fastening of the screw.

[0009] Further, the rotation of the pin shaft in the track groove realizes the movement and locking of the crawler.

[0010] The beneficial effects achieved by the utility model are as follows: By rotating the handle clockwise, the pin shaft rotates 180° in the track groove to protrude from the pin sleeve, and the protruding pin shaft is inserted into the corresponding hole of the H-frame in the rotary drilling rig to achieve locking, eliminating potential safety hazards. Since the pin shaft is always in the pin sleeve, the structure is simple, safe and reliable, and the pin shaft is not easily lost. Description of the Drawings

[0011] The accompanying drawings are used to provide a further understanding of the present utility model and form a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model. In the accompanying drawings:

[0012] Figure 1 is a schematic structural view of the present utility model;

[0013] Figure 2 is a schematic view of the working state of the widening pin of the present utility model;

[0014] Figure 3 is a schematic view of the transportation state of the widening pin of the present utility model.

[0015] In the figure: 1, screw; 2, pin sleeve; 21, track groove; 3, pin shaft; 4, handle. Detailed Embodiment

[0016] The following describes the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model and are not used to limit the present utility model.

[0017] Embodiment 1

[0018] As Figures 1-3 shown, a portable crawler widening pin includes a pin shaft 3, the pin shaft 3 is sleeved in a pin sleeve 2, and the two are limited by a positioning member. A track groove 21 for the pin shaft 3 to rotate 180° is provided on the pin sleeve 2.

[0019] A handle 4 for rotation is provided at the bottom of the pin shaft 3.

[0020] The track groove 21 is an inclined groove with a height difference, and the travel range of the track groove 21 is the diameter of the pin sleeve 2.

[0021] The positioning member is a screw 1, and the pin shaft 3 rotates in the track groove 21 of the pin sleeve 2 by the fastening of the screw 1.

[0022] The rotation of the pin shaft 3 in the track groove 21 realizes the movement and locking of the crawler.

[0023] During the process of the crawler widening expanding or contracting, the screw 1 is at the leftmost end of the track groove 21 of the pin sleeve 2. At this time, the pin shaft 3 will contract inside the pin sleeve 2, thereby realizing the actions of the crawler widening expanding and contracting.

[0024] When the crawler widening is fully expanded to the working state or fully contracted to the transportation state, hold the handle 4 and rotate the pin shaft 3 clockwise by 180° to make it protrude from the pin sleeve 2, and insert the protruding pin shaft 3 into the corresponding hole of the H-frame in the rotary drilling rig to realize locking.

[0025] Whether during the process of the crawler width expansion or contraction, or when the crawler width is fully expanded to the working state or fully contracted to the transportation state, the pin shaft 3 is always in the bushing 2, and there is no problem of removal and loss.

[0026] It should be noted that the above description is only the preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. The terms used in the description of the present application are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of the same type and do not limit the number of objects. For example, the first object can be one or more. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / ", generally represents an "or" relationship between the associated objects before and after.

[0028] It should be noted that in the description of the present application, the orientation or positional relationship indicated by the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the directional terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

Claims

1. A portable crawler widening pin, characterized in that It includes a pin shaft, the pin shaft is sleeved in a pin sleeve, and the two are limited by a positioning member. A track groove is provided on the pin sleeve to enable the pin shaft to rotate 180°.

2. The portable crawler widening pin according to claim 1, wherein, A handle for rotation is provided at the bottom of the pin shaft.

3. The portable crawler widening pin according to claim 1, characterized in that, The track groove is an inclined groove with a height difference, and the travel range of the track groove is the diameter of the pin sleeve.

4. The portable crawler widening pin according to claim 1, characterized in that, The positioning member is a screw, and the pin shaft rotates in the track groove of the pin sleeve by tightening the screw.

5. The portable crawler widening pin according to claim 1, characterized in that The rotation of the pin shaft in the track groove realizes the movement and locking of the crawler.

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