Mounting tool for hinge pin shaft

Abstract

The installation tool comprises a double-end nut, a first internal thread is machined at one end of an internal through hole of the double-end nut, and a second internal thread is machined at the other end of the internal through hole of the double-end nut; the first internal thread is connected with a first external thread through thread engagement, and the outer side of the first external thread is fixedly connected with a first guide seat; the second internal thread is connected with a second external thread through thread engagement, and the outer side of the second external thread is fixedly connected with a second guide seat; when the pin shaft is hinged, the coaxiality of the cylindrical pin and the circular through hole is ensured by the arrangement of the first guide seat and the second guide seat, and the frictional resistance of the cylindrical pin penetrating into the circular through hole is reduced by the wedge-shaped inclined surfaces at the front ends of the first guide seat and the second guide seat, and the cylindrical pin is guided to smoothly penetrate into the circular through hole; and the coaxiality of the round hole and the cylindrical pin is met, the time for aligning the hole site by an operator is shortened, and the operation difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical assembly of underground trackless equipment, in particular to an installation tool for a hinge pin shaft. Background Art

[0002] As a common flexible connection method, cylindrical pin articulation is widely used in the connection of steel structures. The main assembly difficulty of this connection method lies in the installation of the cylindrical pin. In the traditional installation process, due to the lack of a reliable guiding device, the coaxiality deviation of the pin shaft hole between the two articulated devices often easily damages the cylindrical surface of the pin shaft or the pin shaft hole. At the same time, the articulation process is more dependent on the experience of the operators, and requires multiple operators to cooperate with each other, which has high manpower and time costs. Therefore, there is an urgent need for a tool that can reliably ensure the coaxiality and installation accuracy of the pin shaft holes of the two articulated seats during the pin shaft articulation process, while reducing the difficulty of manual operation. Utility Model Content

[0003] The purpose of the utility model is to provide a mounting tool for a hinge pin shaft to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A mounting tool for a hinge pin comprises a double-headed nut, wherein one end of the internal through hole of the double-headed nut is processed with a first internal thread and the other end is processed with a second internal thread; the first internal thread is connected to a first external thread by threaded engagement, and the outer side of the first external thread is fixedly connected to a first guide seat; the second internal thread is connected to a second external thread by threaded engagement, and the outer side of the second external thread is fixedly connected to a second guide seat; the outer side of the double-headed nut is provided with a wrench tightening inclined surface.

[0006] Preferably, the first guide seat is a wedge-shaped structure, and the rectangular flat bottom end of the first guide seat is in close contact with the end surface of the cylindrical pin.

[0007] Preferably, the second guide seat is a wedge-shaped structure, and the rectangular flat bottom end of the second guide seat is in close contact with the end surface of the cylindrical pin.

[0008] Preferably, the first guide seat and the second guide seat are clamped in the circular through hole of the first hinge seat, and an adjustment pad is clamped between the bottom of the first guide seat and the second guide seat, and the upper surface of the adjustment pad is in close contact with the stud nut.

[0009] Preferably, the wedge-shaped inclined surfaces at the front ends of the first guide seat and the second guide seat guide the cylindrical pin to pass through the circular through holes of the first hinge seat and the second hinge seat in sequence.

[0010] The working process of the utility model is:

[0011] The first external thread on the side of the first guide seat is screwed into the first internal thread at one end of the stud nut, and the second external thread on the side of the second guide seat is screwed into the second internal thread at the other end of the stud nut. At the same time, the screwing depth of the first external thread and the second external thread is adjusted according to the aperture of the circular through hole in the first hinge seat and the second hinge seat so that the outer side surfaces of the first guide seat and the second guide seat are clamped in the circular through hole, and then a wrench is used to clamp on the tightening inclined surface of the wrench to perform the tightening operation; then the cylindrical pin is pushed in horizontally, and an adjustment pad is provided between the end face of the cylindrical pin and the stud nut, and the adjustment pad is clamped between the first guide seat and the second guide seat to ensure that the first guide seat, the second guide seat and the stud nut maintain a uniform level and are close to the end face of the cylindrical pin, and then a horizontal force is applied to the cylindrical pin to make it move horizontally in the circular through hole in the first hinge seat and the second hinge seat. When the cylindrical pin moves in the circular through hole, the wedge-shaped inclined surfaces at the front ends of the first guide seat and the second guide seat always maintain a guiding state, and are subjected to force and automatically aligned with each other. During the entire installation process, the coaxiality of the circular through holes of the first hinge seat and the second hinge seat and the cylindrical pin is substantially consistent, and the cylindrical pin can be smoothly installed in the circular through holes of the first hinge seat and the second hinge seat.

[0012] The beneficial effects of the utility model are:

[0013] (1) When the pin shaft is hinged, the first guide seat and the second guide seat are clamped in the circular through holes of the first hinge seat and the second hinge seat. The setting of the first guide seat and the second guide seat ensures the coaxiality of the cylindrical pin and the circular through hole, and the wedge-shaped inclined surfaces at the front ends of the first guide seat and the second guide seat reduce the friction resistance of the cylindrical pin penetrating into the circular through hole and guide the cylindrical pin to smoothly penetrate into the circular through hole, thereby meeting the coaxiality of the circular hole and the cylindrical pin, reducing the time for operators to align the hole position and reducing the difficulty of operation.

[0014] (2) The wrench tightening slope provided on the stud nut in the utility model can adjust the tightness of the guide tool in the circular through hole by rotating the wrench, which is conducive to the clamping of the guide tool in the circular through hole and prevents it from falling off.

[0015] (3) The utility model has a small mass and a simple structure, which saves labor and improves efficiency. Operators only need a few tools of different models to handle all cylindrical pin articulation operations, which reduces the cost of use for operators. When the diameter of the cylindrical pin is not an integer, the tool is still applicable; at the same time, it reduces the damage to parts during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the working process of the utility model;

[0017] Figure 2 yes Figure 1 The overall structural diagram of the utility model in the figure;

[0018] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle stud nut;

[0019] Figure 4 yes Figure 1 A schematic diagram of the structure of the first guide seat;

[0020] Figure 5 yes Figure 1 A schematic diagram of the structure of the second guide seat;

[0021] In the figure, 20-first hinge seat; 30-second hinge seat; 40-cylindrical pin; 50-circular through hole; 300-stud nut; 310-first internal thread; 320-second internal thread; 330-wrench tightening slope; 400-first guide seat; 410-first external thread; 500-second guide seat; 510-second external thread; 600-adjustment pad. DETAILED DESCRIPTION

[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0023] like Figure 1-5 A mounting tool for a hinge pin shaft is shown, comprising a double-headed nut 300 with a wrench tightening bevel 330 on the outer side, wherein the internal through hole of the double-headed nut 300 is processed with a first internal thread 310 at one end and a second internal thread 320 at the other end; the first internal thread 310 is connected to a first external thread 410 by threaded engagement, and a first guide seat 400 with a wedge-shaped structure is fixedly connected to the outer side of the first external thread 410, and the rectangular flat bottom end of the first guide seat 400 is tightly against the end face of a cylindrical pin 40; the second internal thread 320 is connected to a second external thread 510 by threaded engagement, and a second guide seat 500 with a wedge-shaped structure is fixedly connected to the outer side of the second external thread 510; the rectangular flat bottom end of the second guide seat 500 is tightly against the end face of the cylindrical pin 40.

[0024] The first guide seat 400 and the second guide seat 500 are clamped in the circular through hole 50 of the first hinge seat 20, and an adjustment pad 600 is clamped between the bottoms of the first guide seat 400 and the second guide seat 500, and the upper surface of the adjustment pad 600 is in close contact with the stud nut 300. The wedge-shaped inclined surfaces at the front ends of the first guide seat 400 and the second guide seat 500 guide the cylindrical pin 40 to pass through the circular through holes 50 of the first hinge seat 20 and the second hinge seat 30 in sequence.

[0025] The working process of the utility model is:

[0026] Screw the first external thread 410 on the side of the first guide seat 400 into the first internal thread 310 at one end of the stud nut 300, and screw the second external thread 510 on the side of the second guide seat 500 into the second internal thread 320 at the other end of the stud nut 300. At the same time, adjust the screwing depth of the first external thread 410 and the second external thread 510 according to the aperture of the circular through hole 50 in the first hinge seat 20 and the second hinge seat 30 so that the outer side surfaces of the first guide seat 400 and the second guide seat 500 are clamped in the circular through hole 50, and then use a wrench to clamp on the wrench tightening inclined surface 330 to tighten the operation; then push the cylindrical pin 40 horizontally, and when the end surface of the cylindrical pin 40 is aligned with the end surface of the cylindrical pin 40

[0027] An adjustment pad 600 is provided between the stud nut 300. The adjustment pad 600 is clamped between the first guide seat 400 and the second guide seat 500 to ensure that the first guide seat 400, the second guide seat 500 and the stud nut 300 maintain uniform horizontality and are close to the end surface of the cylindrical pin 40. Then, a horizontal force is applied to the cylindrical pin 40 to make it move horizontally in the circular through hole 50 in the first hinge seat 20 and the second hinge seat 30. When the cylindrical pin 40 moves in the circular through hole 50, the wedge-shaped inclined surfaces at the front ends of the first guide seat 400 and the second guide seat 500 always maintain a guiding state, and are mutually stressed and automatically aligned. During the entire installation process, the coaxiality of the circular through hole 50 of the first hinge seat 20 and the second hinge seat 30 is basically consistent with that of the cylindrical pin 40, and the cylindrical pin 40 can be smoothly installed in the circular through hole 50 of the first hinge seat 20 and the second hinge seat 30.

[0028] When the pin shaft is hinged, the first guide seat and the second guide seat are clamped in the circular through holes of the first hinge seat and the second hinge seat. The arrangement of the first guide seat and the second guide seat ensures the coaxiality of the cylindrical pin and the circular through hole, and the wedge-shaped inclined surfaces at the front ends of the first guide seat and the second guide seat reduce the friction resistance of the cylindrical pin penetrating into the circular through hole and guide the cylindrical pin to smoothly penetrate into the circular through hole, thereby meeting the coaxiality of the circular hole and the cylindrical pin. The tool reduces the time for operators to align the hole position and reduces the difficulty of the operation.

[0029] The above are only preferred examples of the present invention. It should be pointed out that for ordinary technicians in this field, under the technical inspiration provided by the present invention, as common knowledge in the mechanical field, other equivalent variations and improvements can be made, which should also be regarded as the protection scope of the present invention.

Claims

1. A mounting tool for a hinge pin, characterized in that: The invention comprises a stud nut (300), wherein one end of the internal through hole of the stud nut (300) is processed with a first internal thread (310), and the other end is processed with a second internal thread (320); the first internal thread (310) is connected to a first external thread (410) by threaded engagement, and the outer side of the first external thread (410) is fixedly connected to a first guide seat (400); the second internal thread (320) is connected to a second external thread (510) by threaded engagement, and the outer side of the second external thread (510) is fixedly connected to a second guide seat (500); and the outer side of the stud nut (300) is provided with a wrench tightening inclined surface (330).

2. The installation tool for hinge pin according to claim 1, characterized in that: The first guide seat (400) is a wedge-shaped structure, and the rectangular flat bottom end of the first guide seat (400) is in close contact with the end surface of the cylindrical pin (40).

3. A tool for installing a hinge pin according to claim 1 or 2, characterized in that: The second guide seat (500) is a wedge-shaped structure, and the rectangular flat bottom end of the second guide seat (500) is in close contact with the end surface of the cylindrical pin (40).

4. The installation tool for hinge pin according to claim 3, characterized in that: The first guide seat (400) and the second guide seat (500) are clamped in the circular through hole (50) of the first hinge seat (20), and an adjustment pad (600) is clamped between the bottoms of the first guide seat (400) and the second guide seat (500), and the upper surface of the adjustment pad (600) is in close contact with the stud nut (300).

5. The installation tool for hinge pin according to claim 4, characterized in that: The wedge-shaped inclined surfaces at the front ends of the first guide seat (400) and the second guide seat (500) guide the cylindrical pin (40) to pass through the circular through holes (50) of the first hinge seat (20) and the second hinge seat (30) in sequence.

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