Multi-aperture bolt wrench sleeve

Abstract

The utility model belongs to the technical field of bolt disassembling and assembling tools, and particularly discloses a multi-aperture bolt wrench socket which comprises an outer barrel, one end of the outer barrel is fixedly connected with a connector, and the connector is provided with a connecting hole used for being connected with a drilling machine. A guide hole is formed in the outer cylinder, an inner cylinder is axially connected in the guide hole in a sliding mode, a pin groove is formed in the inner cylinder, a pin hole is formed in the outer cylinder, and the pin hole and the pin groove are connected with a positioning pin in a matched mode. A compression spring is further arranged in the outer cylinder; one end of the compression spring abuts against the outer cylinder, and the other end of the compression spring abuts against the inner cylinder. The nut can be matched with bolts of two specifications at the same time, when the nut is used, after a drilling machine is connected, the nut can be placed in the inner barrel only by moving the nut towards the bolt to be screwed, or the nut is pressed downwards slightly, abuts against the inner barrel and moves upwards, then the nut enters the outer barrel, rapid disassembly, assembly and maintenance of the nuts of the two specifications are achieved, operation is convenient, efficiency is high, and cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt disassembling and assembling tools, in particular to a multi-aperture bolt wrench socket. Background Art

[0002] Some turnout type II spring bar bolts use a structure that combines a limit plate and a lock nut. The lock nut has a diameter of 36mm; the limit plate has a diameter of 46mm; two sets of socket wrenches with different apertures must be prepared when loosening and tightening the fasteners. When removing the bolts, the lock nut must be loosened with a 36mm socket wrench first, and then the limit plate must be loosened with a 46mm socket wrench. The procedure is complicated; or, a wrench must be carried to replace sockets of different apertures on site. This not only increases the number of tools and equipment to be carried, but also affects work efficiency. Utility Model Content

[0003] Aiming at the problem that the replacement of railway bolt removal tools in the prior art is cumbersome and the working efficiency needs to be improved, a multi-aperture bolt wrench socket is proposed. The utility model provides the following technical solutions:

[0004] A multi-diameter bolt wrench socket comprises an outer cylinder, one end of which is fixedly connected to a connecting head, and the connecting head is provided with a connecting hole for connecting to a drilling rig; a guide hole is provided in the outer cylinder, an inner cylinder is axially slidably connected in the guide hole, a pin groove is provided on the inner cylinder, a pin hole is provided on the outer cylinder, and a locating pin is connected to the pin hole and the pin groove in cooperation; a compression spring is also provided in the outer cylinder; one end of the compression spring abuts against the outer cylinder, and the other end abuts against the inner cylinder.

[0005] Preferably, a pressure relief hole is provided on the side wall of the connector.

[0006] Preferably, an annular paving groove is provided between the connecting head and the outer tube, and the pressure relief hole is provided in the annular paving groove.

[0007] Preferably, the connector and the outer cylinder are integrally formed.

[0008] Preferably, the connecting hole is square.

[0009] Preferably, the guide hole is a regular hexagon.

[0010] Preferably, the outer contour of the inner cylinder is a regular hexagon.

[0011] Preferably, the inner contour of the inner cylinder is a regular hexagon, and the inner contour of the inner cylinder is concentrically and equidistantly arranged with the outer contour of the inner cylinder.

[0012] Preferably, when the positioning pin abuts against an end of the pin groove close to the connecting head, the end of the inner tube is arranged inside the outer tube.

[0013] Preferably, a sliding block is fixedly connected to the outer wall of the inner cylinder, a guide groove is provided on the inner wall of the outer cylinder, and the sliding block is axially slidably connected to the guide groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. Through the multi-diameter bolt sleeve, one socket wrench can be used to disassemble and assemble two types of nuts, reducing the number of tools to be carried, saving manpower, reducing replacement time, and improving work efficiency;

[0016] 2. An annular clearance groove is provided between the connector and the outer tube, and the pressure relief hole is provided in the annular clearance groove, which can reduce the internal pressure in the connection hole when connecting the drilling rig, thereby improving the stability of the connection process; at the same time, in conjunction with the hole position on the drilling rig, a pin shaft connection can be realized to achieve axial limit;

[0017] 3. A slider is fixedly connected to the outer wall of the inner tube, and a guide groove is arranged on the inner wall of the outer tube. The guide groove is arranged to penetrate on one side, and the penetration direction is the direction away from the connecting head. The slider is axially slidably connected to the guide groove, which can further improve the stability of the inner tube when sliding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the outer cylinder of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the outer cylinder of the utility model;

[0020] Figure 3 It is a schematic diagram of the top view of the outer cylinder of the utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the inner cylinder of the utility model;

[0022] In the attached drawings, 1, connector; 11, connecting hole; 12, annular clearance groove; 13, pressure relief hole; 2, outer tube; 21, pin hole; 22, guide hole; 3, inner tube; 31, pin groove. DETAILED DESCRIPTION

[0023] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0024] Example 1

[0025] like Figure 1-4As shown, a multi-diameter bolt wrench socket comprises an outer cylinder 2, one end of which is fixedly connected to a connecting head 1, and a connecting hole 11 for connecting a drilling rig is provided on the connecting head 1; a guide hole 22 is provided in the outer cylinder 2, and an inner cylinder 3 is axially slidably connected in the guide hole 22, and a pin groove 31 is provided on the inner cylinder 3, and a pin hole 21 is provided on the outer cylinder 2, and the pin hole 21 is a conical countersunk hole, and a locating pin is connected with the pin hole 21 and the pin groove 31, and correspondingly, the locating pin adopts a conical cap type; a compression spring is also provided in the outer cylinder 2; one end of the compression spring abuts against the outer cylinder 2, and the other end abuts against the inner cylinder 3; the utility model can be adapted to bolts of two specifications at the same time. When in use, after the drilling rig is connected, it only needs to move toward the bolt to be tightened, and the nut can be placed in the inner cylinder 3, or slightly pressed down, and the nut abuts against the inner cylinder 3 and moves upward, and then enters the outer cylinder 2, so that nuts of two specifications can be quickly disassembled and maintained, which is convenient to operate, efficient and low in cost.

[0026] Specifically, the connector 1 and the outer tube 2 are integrally formed to improve overall strength.

[0027] Specifically, a pressure relief hole 13 is provided on the side wall of the connector 1. An annular relief groove 12 is provided between the connector 1 and the outer tube 2. The pressure relief hole 13 is provided in the annular relief groove 12, which can reduce the internal pressure in the connection hole 11 when connecting the drilling rig, thereby improving the stability of the connection process; at the same time, in conjunction with the hole position on the drilling rig, a pin connection can be realized to achieve axial limit.

[0028] Specifically, the connecting hole 11 is square, which is suitable for the connection of most drilling rigs. The guide hole 22 is a regular hexagon, and the outer contour of the inner cylinder 3 is a regular hexagon. Specifically, the inner contour of the inner cylinder 3 is a regular hexagon, and the inner contour of the inner cylinder 3 is concentrically and equidistantly arranged with the outer contour of the inner cylinder 3, which has higher uniformity and is simpler to process.

[0029] Specifically, the connecting hole 11 is a square hole with a side length of 26 mm, the diameter of the inscribed circle of the inner contour of the outer cylinder 2 is 46 mm, and the diameter of the inscribed circle of the inner contour of the inner cylinder 3 is 36 mm.

[0030] Specifically, when the positioning pin abuts against the end of the pin groove 31 close to the connector 1, the end of the inner cylinder 3 is arranged inside the outer cylinder 2. This arrangement takes into account that under the action of the compression spring, if there is no external force, the inner cylinder 3 will move outward (with a tendency to protrude from the outer cylinder 2). When it moves to the end, the positioning pin will abut against the end of the pin groove 31 close to the connector 1. Therefore, if the end of the inner cylinder 3 is still arranged inside the outer cylinder 2 at this time, it is ensured that in the default state, the inner cylinder 3 does not protrude from the outer cylinder 2. When connecting a nut of a smaller size (of the two specifications), the outer cylinder 2 can be used for limiting the position and the torsion resistance of the inner cylinder 3 can be improved; when connecting a nut of a larger size (of the two specifications), it can be quickly entered into the inner side of the outer cylinder 2 and quickly positioned.

[0031] Example 2

[0032] On the basis of Example 1, a slider is fixedly connected to the outer wall of the inner cylinder 3, and a guide groove is provided on the inner wall of the outer cylinder 2. The guide groove is set through one side. Specifically, the through direction is away from the connecting head 1. The slider is axially slidably connected to the guide groove, which can further improve the stability of the inner cylinder 3 when sliding.

Claims

1. A multi-aperture bolt wrench socket, characterized in that: The invention comprises an outer cylinder (2), one end of which is fixedly connected to a connector (1), and the connector (1) is provided with a connection hole (11) for connecting to a drilling rig; a guide hole (22) is provided in the outer cylinder (2), an inner cylinder (3) is axially slidably connected in the guide hole (22), the inner cylinder (3) is provided with a pin groove (31), the outer cylinder (2) is provided with a pin hole (21), and a positioning pin is connected to the pin hole (21) and the pin groove (31); a compression spring is also provided in the outer cylinder (2); one end of the compression spring abuts against the outer cylinder (2), and the other end abuts against the inner cylinder (3).

2. The multi-diameter bolt wrench socket according to claim 1, characterized in that: A pressure relief hole (13) is provided on the side wall of the connector (1).

3. The multi-diameter bolt wrench socket according to claim 2, characterized in that: An annular relief groove (12) is provided between the connecting head (1) and the outer cylinder (2), and the pressure relief hole (13) is provided in the annular relief groove (12).

4. The multi-aperture bolt wrench socket according to claim 1 or 3, characterized in that: The connecting head (1) and the outer cylinder (2) are integrally formed.

5. The multi-diameter bolt wrench socket according to claim 1, characterized in that: The connecting hole (11) is square.

6. The multi-diameter bolt wrench socket according to claim 1, characterized in that: The guide hole (22) is a regular hexagon.

7. The multi-diameter bolt wrench socket according to claim 1 or 6, characterized in that: The outer contour of the inner cylinder (3) is a regular hexagon.

8. The multi-diameter bolt wrench socket according to claim 7, characterized in that: The inner contour of the inner cylinder (3) is a regular hexagon, and the inner contour of the inner cylinder (3) is arranged concentrically and equidistantly with the outer contour of the inner cylinder (3).

9. The multi-diameter bolt wrench socket according to claim 1, characterized in that: When the positioning pin abuts against the end of the pin groove (31) close to the connecting head (1), the end of the inner cylinder (3) is arranged inside the outer cylinder (2).

10. The multi-diameter bolt wrench socket according to claim 1, characterized in that: A sliding block is fixedly connected to the outer wall of the inner cylinder (3), a guide groove is provided on the inner wall of the outer cylinder (2), and the sliding block is axially slidably connected to the guide groove.

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