Bolt wrench head capable of automatically ejecting nut

Abstract

The bolt wrench head capable of automatically ejecting the nut comprises a connecting part, a wrench part and an ejection spring, the wrench part is fixedly arranged at the bottom of the connecting part, the wrench part and the connecting part are integrally formed, the shape of the cross section of an inner cavity of the wrench part is matched with the shape of a railway bolt, and the ejection spring is arranged in the inner cavity of the wrench part. The ejection spring is mounted in the wrench part; by the adoption of the technical scheme, the spanner can be connected with the machine body through the connecting part, the machine body can drive the spanner to rotate, after a railway bolt enters the spanner part, oil dirt, entering the spanner part, on the railway bolt can be discharged through the oil discharging holes in the two sides of the spanner part, and after the nut is detached from the spanner part, oil dirt can be ejected out under the action of the ejection spring. The nut is directly separated from the wrench portion, continuous operation of the wrench is facilitated, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of railway bolt wrenches, in particular to a bolt wrench head which can automatically push out a nut. Background Art

[0002] Railway bolts are key components to ensure the geometric dimensions of railway tracks. If they are rusted or loosened, they will directly endanger driving safety. For this reason, the railway stipulates that railway bolts must be thoroughly descaled and oiled once a year.

[0003] The Chinese utility model patent with publication number CN2199847 discloses a labor-saving wrench specially used for disassembling and assembling nuts of fasteners connecting railway rails and concrete sleepers, which has the advantages of simple structure, labor-saving operation, high efficiency in disassembling and assembling nuts, convenient use and carrying, and reduced labor intensity of workers. However, the above-mentioned prior art has at least the following defects:

[0004] 1. The oil on the railway bolts will accumulate in the wrench, affecting the use of the wrench;

[0005] 2. After the railway bolts are disassembled, they will remain in the wrench and need to be removed manually. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In order to solve the above problems in the prior art, the utility model provides a bolt wrench head which can automatically push out a nut.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0010] A bolt wrench head capable of automatically ejecting a nut comprises a connecting portion, a wrench portion and an ejecting spring;

[0011] The wrench part is fixedly arranged at the bottom of the connecting part and is formed integrally with the connecting part, and the cross-sectional shape of the inner cavity of the wrench part is adapted to the shape of the railway bolt;

[0012] The ejection spring is installed in the wrench part.

[0013] Preferably, oil drain holes are arranged opposite to each other on both sides of the wrench portion.

[0014] Preferably, arc-shaped clamping blocks are arranged opposite to each other on the inner walls of both sides of the wrench part close to one end of the connecting part, and a step-shaped placement groove is formed between the arc-shaped clamping block and the inner wall of the wrench part, and a clamping ring adapted to the placement groove is arranged on the top of the ejection spring.

[0015] Preferably, the cross section of the connecting portion is a rectangular structure, the inner wall of the connecting portion is provided with bayonet holes on both sides thereof, the outer wall of the connecting portion is provided with grooves at equal intervals along its circumference, and the bayonet holes are located in the grooves.

[0016] (III) Beneficial effects

[0017] The beneficial effects of the utility model are as follows: by adopting the above technical scheme, the connecting part can be connected with the machine body, the machine body can drive the wrench to rotate, after the railway bolt enters the wrench part, the oil discharge holes on both sides of the wrench part can discharge the oil stains on the railway bolt that enter the wrench part, and after the nut is removed from the wrench part, under the action of the ejection spring, the nut is directly separated from the wrench part, which is conducive to the continued operation of the wrench and improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a bolt wrench head capable of automatically ejecting a nut;

[0019] Figure 2 The present invention is a schematic diagram of the internal structure of a bolt wrench head that can automatically eject a nut.

[0020] Description of reference numerals:

[0021] 1. Wrench part; 11. Oil drain hole; 12. Arc-shaped clamping block;

[0022] 2. Connecting part; 21. Pin hole; 22. Groove;

[0023] 3. Ejector spring; 31. Snap ring. DETAILED DESCRIPTION

[0024] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0025] Please refer to Figure 1 to Figure 2 The utility model provides a bolt wrench head capable of automatically ejecting a nut, comprising a connecting portion 2, a wrench portion 1 and an ejection spring 3;

[0026] The wrench part 1 is fixedly arranged at the bottom of the connecting part 2 and is formed integrally with the connecting part 2. The cross-sectional shape of the inner cavity of the wrench part 1 is adapted to the shape of the railway bolt;

[0027] The ejector spring 3 is installed in the wrench part 1 .

[0028] In this embodiment, oil drain holes 11 are oppositely arranged on two sides of the wrench portion 1 .

[0029] In this embodiment, arc-shaped clamping blocks 12 are arranged on the inner walls of both sides of the wrench part 1 near one end of the connecting part 2, and a step-shaped placement groove is formed between the arc-shaped clamping block 12 and the inner wall of the wrench part 1, and a clamping ring 31 adapted to the placement groove is arranged on the top of the ejection spring 3;

[0030] When in use, the connecting part 2 can be connected with the machine body, and the machine body can drive the wrench to rotate. After the railway bolt enters the wrench part 1, the oil discharge holes 11 on both sides of the wrench part 1 can discharge the grease on the railway bolt that enters the wrench part 1, and after the nut is removed from the wrench part 1, under the action of the ejection spring 3, the nut is directly separated from the wrench part 1, which is conducive to the continued operation of the wrench and improves the work efficiency.

[0031] In this embodiment, the cross-section of the connecting part 2 is a rectangular structure, and bayonet holes 21 are oppositely arranged on both sides of the inner wall of the connecting part 2, and grooves 22 are evenly spaced along the circumference of the outer wall of the connecting part 2. The bayonet hole 21 is located in the groove 22, and the bayonet is inserted into the bayonet hole 21 for connecting with the connecting rod of the body. The connecting rod is controlled by the body and can rotate. After the bayonet pin is inserted into the bayonet hole 21 to connect the connecting rod, the two bayonet pins are connected by a strap, and the strap is located in the groove 22, so as to achieve a stable connection between the connecting part 2 and the body.

[0032] The working principle of the utility model is as follows:

[0033] The connecting part 2 can be connected to the machine body, and the machine body can drive the wrench to rotate. After the railway bolt enters the wrench part 1, the oil discharge holes 11 on both sides of the wrench part 1 can discharge the oil stains on the railway bolt that enter the wrench part 1, and after the nut is removed from the wrench part 1, under the action of the ejection spring 3, the nut is directly separated from the wrench part 1, which is conducive to the continued operation of the wrench and improves the work efficiency.

[0034] The circuits, electronic components and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0035] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A bolt wrench head capable of automatically ejecting a nut, characterized in that: It includes a connecting part, a wrench part and an ejection spring; The wrench part is fixedly arranged at the bottom of the connecting part and is formed integrally with the connecting part, and the cross-sectional shape of the inner cavity of the wrench part is adapted to the shape of the railway bolt; The ejection spring is installed in the wrench part; Oil drain holes are arranged opposite to each other on two sides of the wrench portion; Arc-shaped clamping blocks are arranged opposite to each other on the inner walls of both sides of the wrench part close to one end of the connecting part, and a step-shaped placement groove is formed between the arc-shaped clamping block and the inner wall of the wrench part. A clamping ring matched with the placement groove is arranged on the top of the ejection spring.

2. A bolt wrench head capable of automatically ejecting a nut according to claim 1, characterized in that: The cross section of the connecting part is a rectangular structure. The inner wall of the connecting part is provided with bayonet holes on both sides thereof. The outer wall of the connecting part is provided with grooves at equal intervals along its circumference. The bayonet holes are located in the grooves.

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