CN111152152A

CN111152152A - A spanner for narrow space

Info

Publication number: CN111152152A
Application number: CN201911425907.1A
Authority: CN
Inventors: 葛振志
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-05-15

Abstract

The invention discloses a wrench for a narrow space. The rotation of the rocker drives the small bevel gear to rotate, and the small bevel gear drives the large bevel gear to rotate so as to achieve the effect of screwing or loosening the bolt and the nut. The wrench can work only by extending the front end into the wrench to be sleeved on a workpiece and then swinging the rocker, does not need to swing left and right like a common wrench, and is particularly suitable for working in narrow space. The invention has simple structure, wide application and great popularization value.

Description

A spanner for narrow space

Technical Field

The invention relates to the technical field of hardware tools, in particular to a wrench.

Background

Common wrenches comprise an open end wrench, a box end wrench, a spanner wrench and the like, and the wrenches are easy to operate when the space is wide, but the wrenches are difficult to twist because of the need of swinging when the space is narrow.

At present, a wrench which can screw bolts and nuts in a narrow space is lacked.

Disclosure of Invention

The invention provides a wrench for a narrow space, aiming at solving the problem that the wrench capable of screwing bolts and nuts in the narrow space is lacked.

The invention is realized according to the following technical scheme:

a wrench for narrow space comprises a large bevel gear, a small bevel gear, a bearing, a bracket, a cover plate I, a screw, a cover plate II, a key and a rocker, wherein the large bevel gear is inserted into a hole of a bracket bottom plate; the small bevel gear sleeve is sleeved with a bearing and then inserted into a hole of a side plate of the bracket and is meshed with the large bevel gear; the rocker is inserted in the small bevel gear hole and is connected with the small bevel gear through a key.

Preferably, the upper part of the large bevel gear is provided with bevel teeth, the center of the large bevel gear is provided with a regular hexagonal hole, the lower part of the large bevel gear is provided with a cylinder, and the bottom of the large bevel gear is provided with a threaded hole.

Preferably, the upper part of the small bevel gear is provided with bevel teeth, the lower part of the small bevel gear is provided with a cylinder, the center of the small bevel gear is provided with a round hole, a key groove is processed in the round hole, and the modulus pressure angles of the small bevel gear and the large bevel gear are equal.

Preferably, the bracket comprises a bracket bottom plate and a bracket side plate, a hole is formed in the middle of the bracket bottom plate, a regular hexagonal step is arranged below the hole, and a threaded hole is formed in the step; the bracket side plate is vertical to the bracket bottom plate, and a hole is formed in the middle of the bracket side plate to install a bearing.

Preferably, the lower part of the cover plate I is in a regular hexagon shape, the upper part of the cover plate I is in a cylindrical shape, the center of the cover plate I is a stepped hole, and a hole matched with the support bottom plate is processed at the lower part of the cover plate I.

Preferably, the cover plate II is a circular ring-shaped plate, and is provided with a hole matched with the threaded hole of the large bevel gear.

The invention has the beneficial effects that:

when the invention is used, the head in front of the head is only required to be plugged into a working position, and then the rocker is shaken. Since the swing is not required, the device is particularly suitable for use in a narrow space. The invention is particularly suitable for the disassembly of the hydraulic pipe joint in engineering accessories such as hydraulic shears and hydraulic grab buckets, is very practical and is worth popularizing.

Drawings

FIG. 1 is an external view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a cross-sectional view of a side view of the present invention;

FIG. 5 is a top view of the present invention;

FIG. 6 is a cross-sectional view of a top view of the present invention;

FIG. 7 is an external view of a large bevel gear of the present invention;

FIG. 8 is an external view of the bevel pinion of the present invention;

FIG. 9 is an outline view of a stent of the present invention;

FIG. 10 is an outline view of a cover plate I of the present invention;

FIG. 11 is a view of the cover plate II of the present invention;

in the figure: 1. big bevel gear, 2, small bevel gear, 3, bearing, 4, support, 4-1, support bottom plate, 4-2, support side plate, 5, cover plates I, 6, screw, 7, cover plates II, 8, key, 9 and rocker.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.

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 invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.

As shown in fig. 2, firstly, the bearing 3 is sleeved on the small bevel gear 2 and then is arranged in a hole of the side plate 4-2 of the bracket; then, the cover plate I5 is sleeved on the lower cylinder of the large bevel gear 1, and then the cover plate II 7 is attached to the bottom surface of the large bevel gear 1 and is screwed by the screw 6. Then the three parts assembled together are put into the hole of the bracket bottom plate 4-1, so that the large bevel gear 1 is meshed with the small bevel gear 2, and the cover plate I5 is fixed with the bracket bottom plate 4-1 by the screw 6; finally, the rocker 9 is inserted into the inner hole of the bevel pinion 2 and connected with the key 8.

The working principle is as follows: according to the wrench, the small bevel gear 2 is rotated by the rocking of the rocker 9, and then the large bevel gear 1 is rotated, so that the screwing or unscrewing effect is achieved. The large bevel gear 1 and the cover plate II 7 can freely rotate in the hole due to the step hole in the cover plate I5, and the cover plate I5 and the support 4 can prevent the large bevel gear 1 from moving up and down in the hole of the support bottom plate 4-1 after being fixed by the screw 6, so that the whole device can work smoothly.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a spanner for narrow space, includes big bevel gear (1), little bevel gear (2), bearing (3), support (4), apron I (5), screw (6), apron II (7), key (8), rocker (9), its characterized in that: the large bevel gear (1) is inserted into a hole of the support bottom plate (4-1), the cover plate I (5) is sleeved at the lower part of the large bevel gear (1) and is fixed on the support bottom plate (4-1) through a screw (6), and the cover plate II (7) leans against the bottom surface of the large bevel gear (1) and is fixed on the bottom surface of the large bevel gear (1) through the screw (6); the small bevel gear (2) is sleeved with the bearing (3) and then inserted into a hole of the bracket side plate (4-2) and meshed with the large bevel gear (1); the rocker (9) is inserted in the hole of the small bevel gear (2) and is connected with the small bevel gear (2) through a key (8).

2. A wrench as claimed in claim 1, wherein: the upper part of the large bevel gear (1) is provided with bevel teeth, the center of the large bevel gear is provided with a regular hexagonal hole, the lower part of the large bevel gear is provided with a cylinder, and the bottom of the large bevel gear is provided with a threaded hole.

3. A wrench as claimed in claim 1, wherein: the upper part of the small bevel gear (2) is provided with bevel teeth, the lower part of the small bevel gear is provided with a cylinder, the center of the small bevel gear is provided with a round hole, a key groove is processed in the round hole, and the modulus pressure angles of the small bevel gear (2) and the large bevel gear (1) are equal.

4. A wrench as claimed in claim 1, wherein: the support (4) comprises a support bottom plate (4-1) and a support side plate (4-2), a hole is formed in the middle of the support bottom plate (4-1), a regular hexagonal step is arranged below the hole, and a threaded hole is formed in the step; the bracket side plate (4-2) is vertical to the bracket bottom plate (4-1) and is provided with a hole in the middle for installing the bearing (3).

5. A wrench as claimed in claim 1, wherein: the lower part of the cover plate I (5) is in a regular hexagon shape, the upper part of the cover plate I (5) is in a cylindrical shape, the center of the cover plate I (5) is a stepped hole, and a hole matched with the support bottom plate (4-1) is processed at the lower part of the cover plate I (5).

6. A wrench as claimed in claim 1, wherein: the cover plate II (7) is a circular ring-shaped plate, and a hole matched with the threaded hole of the large bevel gear (I) is processed.