Adjustable bolt and nut mounting and dismounting wrench

Abstract

The utility model provides an adjustable bolt and nut mounting and dismounting wrench, which comprises a main handle, an adjustable connecting rod and an adjustable chuck, the main handle is the main force application part of the tool and can adjust the operation angle so as to facilitate force application, the adjustable connecting rod comprises an upper connecting rod, a lower connecting rod and a sheath, and the upper connecting rod, the lower connecting rod and the sheath are matched to play a role in prolonging the operation length of the wrench. The adjustable chuck capable of being rapidly adjusted is designed at the front end, and clamping can be conducted according to the sizes of different bolts and nuts, so that the applicability to the bolts and the nuts of various specifications is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of wrenches, in particular to an adjustable bolt and nut installation and removal wrench. Background Art

[0002] During the inspection and maintenance of production equipment in petrochemical enterprises, it is often necessary to install and remove bolts and nuts. Since there are many equipment and pipelines in the device area, the disassembly space for many bolts and nuts is relatively small. Conventional opening, plum blossom or socket tools are not easy to install and disassemble. Electric or pneumatic tools are generally larger and their use in confined spaces is even more limited. The existing methods and tools waste manpower and material resources, take time and have low work efficiency during use. If the operation is not done properly, it may cause injuries to workers. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the utility model provides an adjustable bolt and nut installation and removal wrench, comprising a main handle (1), an adjustable connecting rod (2) and an adjustable chuck (3), wherein the front end of the main handle (1) is connected to the rear end of the adjustable connecting rod (2), and the front end of the adjustable connecting rod (2) is connected to the rear end of the adjustable chuck (3);

[0004] The adjustable connecting rod (2) comprises an upper connecting rod (21), a lower connecting rod (22) and a sheath (23); the rear end of the upper connecting rod (21) is inserted into the front end opening of the main handle (1), and a handle fastening bolt (11) is provided through the side surface; the front end of the upper connecting rod (21) is a U-shaped rod (211), a threaded through hole is provided on the left side wall of the U-shaped rod (211), and a sheath (23) is provided on the outside; a connecting rod fastening bolt (231) matching the threaded through hole on the side wall of the U-shaped rod (211) is provided through the side wall of the sheath (23); the rear end of the lower connecting rod (22) is inserted into the U-shaped opening of the U-shaped rod;

[0005] The adjustable chuck (3) comprises a right chuck (31) and a left chuck (32), and the right chuck (31) and the left chuck (32) are symmetrically provided with adjustment threaded holes and through holes, and through rods are provided through the through holes on the right chuck (31) and the left chuck (32), and the two ends of the through rods are fixed to the inner walls on both sides of the front end opening of the lower connecting rod (22), and chuck fastening bolts (33) are provided through the adjustment threaded holes on the right chuck (31) and the left chuck (32).

[0006] Compared with the prior art, the beneficial effects of the utility model are:

[0007] The utility model can adjust the operating angle of the handle to facilitate force application; can extend the length of the wrench to expand the installation and disassembly working space of bolts and nuts, and is suitable for installation and disassembly of bolts and nuts in confined spaces; and can clamp bolts and nuts according to different sizes to achieve applicability to bolts and nuts of various specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The following describes the implementation of the adjustable bolt and nut installation and removal wrench of the utility model with reference to the accompanying drawings. The accompanying drawings are:

[0009] Figure 1 The overall structure diagram of an adjustable bolt and nut installation and removal wrench provided by the utility model

[0010] Figure 2 The utility model provides an exploded structural diagram of an adjustable bolt and nut installation and removal wrench. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0012] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention, they are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0013] In addition, if the descriptions of "first", "second", etc. are involved in the present utility model, they are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0014] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments:

[0015] See also Figure 1 and 2The utility model provides an adjustable bolt and nut installation and removal wrench, comprising a main handle 1, an adjustable connecting rod 2 and an adjustable chuck 3. The main handle 1 is the main force-applying part of the tool. A curved gripping surface is designed according to the hand shape of the staff, and the working angle can be adjusted to facilitate force application; the adjustable connecting rod 2 is mainly used to extend the working length of the wrench. The adjustable connecting rod 2 includes an upper connecting rod 21, a lower connecting rod 22 and a sheath 23. The rear end of the upper connecting rod 21 is inserted into the front end opening of the main handle 1, and a handle fastening bolt 11 is penetrated on the side. The front end of the upper connecting rod 21 is a U-shaped rod 211. A threaded through hole is opened on the left side wall of the U-shaped rod 211. The outer A sheath 23 is provided, and a connecting rod fastening bolt 231 is provided on the side wall of the sheath 23 and is compatible with the threaded through hole on the side wall of the U-shaped rod 211. The rear end of the lower connecting rod 22 is inserted into the U-shaped opening of the U-shaped rod; the adjustable chuck 3 can be clamped according to the sizes of different bolts and nuts. The adjustable chuck 3 includes a right chuck 31 and a left chuck 32. The right chuck 31 and the left chuck 32 are symmetrically provided with adjustment threaded holes and through holes. A through rod is provided through the through holes on the right chuck 31 and the left chuck 32. Both ends of the through rod are fixed to the inner walls on both sides of the front end opening of the lower connecting rod 22. The adjusting threaded holes on the right chuck 31 and the left chuck 32 are penetrated by chuck fastening bolts 33.

[0016] When in use, the staff needs to confirm the working space and the specifications of the bolts and nuts on site. First, adjust the distance between the two clamps by adjusting the clamp fastening bolts 33 on the right clamp 31 and the left clamp 32 to adapt to the bolts and nuts of this specification, and clamp the adjustable clamp 3 of the wrench onto the bolts and nuts; then determine the connection length of the upper connecting rod 21 and the lower connecting rod 22 according to the space conditions, tighten the connecting rod fastening bolts 231 on the sheath 23 to fix the positions of the upper connecting rod 21 and the lower connecting rod 22; finally, adjust the angle between the main handle 1 and the adjustable connecting rod 2 so that the working angle is convenient for applying force, tighten the handle fastening bolts 11 to fix the angle of the main handle 1, and install and disassemble the bolts and nuts.

[0017] The embodiments of the present invention have been described so far in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An adjustable bolt and nut installation and removal wrench, characterized in that: It comprises a main handle (1), an adjustable connecting rod (2) and an adjustable clamp (3), wherein the front end of the main handle (1) is connected to the rear end of the adjustable connecting rod (2), and the front end of the adjustable connecting rod (2) is connected to the rear end of the adjustable clamp (3); The adjustable connecting rod (2) comprises an upper connecting rod (21), a lower connecting rod (22) and a sheath (23); the rear end of the upper connecting rod (21) is inserted into the front end opening of the main handle (1), and a handle fastening bolt (11) is provided through the side surface; the front end of the upper connecting rod (21) is a U-shaped rod (211), a threaded through hole is provided on the left side wall of the U-shaped rod (211), and a sheath (23) is provided on the outside; a connecting rod fastening bolt (24) matching the threaded through hole on the side wall of the U-shaped rod (211) is provided through the side wall of the sheath (23); the rear end of the lower connecting rod (22) is inserted into the U-shaped opening of the U-shaped rod; The adjustable chuck (3) comprises a right chuck (31) and a left chuck (32), and the right chuck (31) and the left chuck (32) are symmetrically provided with adjustment threaded holes and through holes, and through rods are provided through the through holes on the right chuck (31) and the left chuck (32), and the two ends of the through rods are fixed to the inner walls on both sides of the front end opening of the lower connecting rod (22), and chuck fastening bolts (33) are provided through the adjustment threaded holes on the right chuck (31) and the left chuck (32).

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