Tool for taking out distance-adjusting eccentric bushing of rail

Abstract

The utility model discloses a tool for taking out a distance-adjusting eccentric bushing of a rail, which comprises a cylinder, a step is arranged at the lower part of an inner cavity of the cylinder to form an upper cavity and a lower cavity, a matched pull rod is inserted into the upper cavity, a rectangular mounting groove is formed in the lower end of the cylinder in a radial penetrating manner, and the rectangular mounting groove extends to the lower end surface of the cylinder. Two hooks are symmetrically hinged to the top of the rectangular mounting groove, a concentric connecting rod is connected to the lower end of the pull rod in a threaded mode, an inclined block of an isosceles trapezoid structure is arranged at the lower end of the connecting rod, and the inclined block pushes the two hooks arranged in a splayed mode to turn outwards when moving upwards; a pin is fixedly installed outside the pull rod, penetrates through the long-strip-shaped hole and is in sliding connection with the long-strip-shaped hole, and a transversely-penetrating handle is fixedly installed at the upper end of the pull rod. When in use, the hanging hook is inserted into the eccentric sleeve, and when the hanging hook is lifted upwards, the hanging hook is clamped and propped against the hanging groove, so that the falling-off situation is greatly reduced, and the replacement efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of railway engineering technology, specifically a tool for removing the rail gauge eccentric sleeve. Background Technology

[0002] The main function of a rail adjustment eccentric sleeve is to correct the position of the rails, ensuring the safety and stability of railway operation. The application scenarios of the adjustment eccentric sleeve can be referred to in Chinese utility model patent CN212505648U, where the adjustment eccentric sleeve is equivalent to the eccentric adjustment ring 702 in the aforementioned patent. Currently, the structure of commercially available nylon adjustment eccentric sleeves is as follows... Figure 1 As shown in Figure a, its lower end has four symmetrical hanging slots, which are used to pull it upwards during replacement. Currently, railway maintenance personnel mostly use this method... Figure 1 The extraction pliers shown in Figure b are used to remove the eccentric sleeve, but the actual effect is relatively poor. This is because the eccentric sleeve is subjected to a large lateral force after installation, which makes it difficult to remove. When the extraction pliers are inserted downward and hooked into the hanging groove and pulled upward, there is a shrinkage deformation towards the middle, which makes it easy for the hook below to detach from the hanging groove, making it impossible to pull the eccentric sleeve out of the hole. Utility Model Content

[0003] The purpose of this utility model is to provide a tool for removing the rail gauge eccentric sleeve, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tool for removing a rail gauge eccentric sleeve, comprising a cylinder, the lower part of which is provided with a step to form an upper cavity and a lower cavity, the diameter of the upper cavity being larger than the diameter of the lower cavity, a matching pull rod inserted into the upper cavity, a radially penetrating rectangular mounting groove provided at the lower end of the cylinder, the rectangular mounting groove extending to the lower end face of the cylinder, two hooks symmetrically hinged at the top of the rectangular mounting groove, a concentric connecting rod screwed to the lower end of the pull rod, an isosceles trapezoidal inclined block provided at the lower end of the connecting rod, the inclined block being located between the back sides of the two hooks and in inclined contact, when the inclined block moves upward, pushing the two hooks arranged in a figure-eight shape to flip outward, an elongated hole along the length direction provided at the upper part of the cylinder, a pin fixedly installed on the outside of the pull rod, the pin penetrating the elongated hole and slidably connected thereto, and a transversely penetrating handle fixedly installed at the upper end of the pull rod.

[0005] Preferably, a spring is provided on the step, the spring is sleeved on the connecting rod, and the upper end of the spring supports the bottom of the pull rod.

[0006] Preferably, the width of the hook is smaller than the width of the rectangular mounting groove.

[0007] Preferably, the lowest point of the hook is higher than the lower end face of the cylinder.

[0008] Compared with the prior art, the beneficial effects of this utility model are: when this utility model is used, it is inserted into the eccentric sleeve, and when it is pulled upward, the hook and the hanging groove engage and abut against each other, which greatly reduces the possibility of falling off and helps to improve the replacement efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the eccentric sleeve and existing extraction forceps.

[0010] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0011] Figure 3 This is a side sectional view of the present invention.

[0012] Figure 4 This is a schematic diagram showing the fit between the present invention and the eccentric sleeve.

[0013] In the diagram: 1. Cylinder; 2. Pull rod; 3. Handle; 4. Long hole; 5. Pin; 6. Hook; 7. Wedge; 8. Connecting rod; 9. Spring; 10. Mounting groove; 11. Step. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figure 2-4 This utility model provides a technical solution: a tool for removing a rail gauge eccentric sleeve, including a cylinder 1. The lower part of the inner cavity of the cylinder 1 is provided with a step 11 to form an upper cavity and a lower cavity. The diameter of the upper cavity is larger than the diameter of the lower cavity. A matching pull rod 2 is inserted into the upper cavity. The lower end of the cylinder 1 is provided with a radially penetrating rectangular mounting groove 10. The rectangular mounting groove 10 extends to the lower end face of the cylinder 1. Two hooks 6 are symmetrically hinged at the top of the rectangular mounting groove 10. The width of the hooks 6 is smaller than the width of the rectangular mounting groove 10. The lowest point of the hooks 6 is higher than the lower end face of the cylinder 1. The thickness of the hooks 6 is smaller than the width of the mounting groove. The hooks 6 can be flipped outward to engage with the mounting groove.

[0016] The lower end of the pull rod 2 is screwed with a concentric connecting rod 8. The lower end of the connecting rod 8 is provided with an isosceles trapezoidal inclined block 7. The inclined block 7 is located between the back sides of the two hooks 6 and is in inclined contact. When the inclined block 7 moves upward, it pushes the two hooks 6, which are arranged in a figure-eight shape, to flip outward. A spring 9 is provided on the step 11. The spring 9 is sleeved on the connecting rod 8. The upper end of the spring 9 supports the bottom of the pull rod 2. After the lower end of the cylinder 1 is inserted into the eccentric sleeve, the spring 9 maintains the external tension of the hooks 6 so that they can be engaged in the hanging groove. The upper part of the cylinder 1 is provided with an elongated hole 4 along the length direction. A pin 5 is fixedly installed on the outside of the pull rod 2. The pin 5 passes through the elongated hole 4 and is slidably connected to it. A handle 3 that passes through laterally is fixedly installed on the upper end of the pull rod 2. The elongated hole 4 and the pin 5 are used to constrain the vertical extension and retraction of the pull rod 2.

[0017] Working principle: When in use, insert the lower end of the cylinder 1 into the eccentric sleeve. Due to the elongation force of the spring 9, the two hooks 6 unfold outward, and the lower end of the hooks 6 abuts against the inner wall of the eccentric sleeve. Then, rotate the tool as a whole so that the hooks 6 find the position of the hanging groove and are locked in it. Then, pull upward by the handle 3, and the hooks 6 further unfold outward so that the lower end abuts against the hanging groove. The pin 5 slides to the top of the elongated hole 4, and the pull rod 2 applies a rigid lifting force to the cylinder 1, thereby pulling the eccentric sleeve out of the hole.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tool for removing a rail gauge eccentric sleeve, comprising a cylinder (1), characterized in that: The lower part of the inner cavity of the cylinder (1) is provided with a step (11) to form an upper cavity and a lower cavity. The diameter of the upper cavity is larger than that of the lower cavity. A matching pull rod (2) is inserted into the upper cavity. The lower end of the cylinder (1) is provided with a radially penetrating rectangular mounting groove (10). The rectangular mounting groove (10) extends to the lower end face of the cylinder (1). Two hooks (6) are symmetrically hinged at the top of the rectangular mounting groove (10). The lower end of the pull rod (2) is screwed with a concentric connecting rod (8). The connecting rod (8) The lower end of the cylinder (1) is provided with an isosceles trapezoidal inclined block (7). The inclined block (7) is located between the back sides of the two hooks (6) and is in inclined contact. When the inclined block (7) moves upward, it pushes the two hooks (6) arranged in a figure-eight shape to flip outward. The upper part of the cylinder (1) is provided with a long strip hole (4) along the length direction. The pull rod (2) is fixedly installed with a pin (5). The pin (5) passes through the long strip hole (4) and is slidably connected to it. The upper end of the pull rod (2) is fixedly installed with a horizontally penetrating handle (3).

2. The tool for removing the rail gauge eccentric sleeve according to claim 1, characterized in that: A spring (9) is provided on the step (11), and the spring (9) is sleeved on the connecting rod (8). The upper end of the spring (9) supports the bottom of the pull rod (2).

3. The tool for removing the rail gauge eccentric sleeve according to claim 1, characterized in that: The width of the hook (6) is smaller than the width of the rectangular mounting groove (10).

4. The tool for removing the rail gauge eccentric sleeve according to claim 3, characterized in that: The lowest point of the hook (6) is higher than the lower end face of the cylinder (1).

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