Railway sleeper spacing control tool

Abstract

This application relates to the field of railway sleeper installation fixtures, specifically disclosing a sleeper spacing control fixture, including a pad beam, which is a rectangular box shape. Mounting sleeves are bolted to the left and right walls of the pad beam. A bidirectional screw is rotatably connected to the interior of both mounting sleeves. The bidirectional screw has symmetrically arranged forward and reverse threads. A knob is fixedly connected to the middle section of the bidirectional screw, and two sliding blocks are threaded to the outer side of the screw. This invention, through the bidirectional screw and sliding block structure, achieves precise and efficient adjustment of the sleeper spacing. The operator only needs to rotate the central knob to drive the two side blocks to move synchronously in opposite directions, ensuring that the blocks are always symmetrical about the pad beam. This symmetrical adjustment method not only improves the accuracy of spacing setting and effectively avoids the cumulative errors that may occur during manual measurement and positioning, but also greatly simplifies the operation process, saving time and effort.

Description

Technical Field

[0001] This application relates to the field of sleeper installation tooling technology, and in particular to a sleeper spacing control tooling. Background Technology

[0002] In railway line construction and maintenance, the laying of sleepers is a crucial step. The uniformity and accuracy of their spacing directly affect the stress state of the rails, the smoothness of the track, and the durability and safety of the entire track structure. Traditional methods for controlling sleeper spacing mainly rely on manual experience and simple physical tools. Manual measurement requires construction workers to use measuring tapes or ropes to locate each sleeper one by one. This method is not only extremely inefficient, severely slowing down the construction progress, but also prone to cumulative errors due to visual errors or improper operation during the measurement process, resulting in uneven sleeper spacing. In addition, to improve efficiency, pre-made simple clamps with fixed-width H-shaped or portal-shaped templates are sometimes used on site. Construction workers place the templates between two sleepers for positioning. Although this method is faster than purely manual measurement, there may be multiple different sleeper spacing requirements in a railway line, which requires preparing templates of various sizes. Management, transportation, and replacement are very cumbersome and lack flexibility. Utility Model Content

[0003] The purpose of this utility model is to provide a sleeper spacing control fixture, which solves the problem of inconvenient sleeper spacing positioning in the existing system.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sleeper spacing control fixture, including a pad beam, the pad beam being rectangular box-shaped, with mounting sleeves bolted to the left and right walls of the pad beam, and a bidirectional screw rod rotatably connected to the interior of the two mounting sleeves, the bidirectional screw rod having symmetrically arranged forward and reverse threads, a knob fixedly connected to the middle section of the bidirectional screw rod, and two sliding blocks threadedly connected to the outer side of the bidirectional screw rod, the sliding blocks being slidably connected to the interior of the pad beam, a guide block fixedly connected to the bottom of the sliding blocks, the guide block penetrating the bottom of the pad beam and slidably connected to the pad beam, and a stop block fixedly connected to the bottom of the guide block.

[0005] Preferably, the inner ring wall of the mounting sleeve is embedded with balls, which contact the circumferential surface of the bidirectional screw. By providing balls on the inner ring wall of the mounting sleeve, and having a full circle of balls, the relative friction between the bidirectional screw and the mounting sleeve can be reduced.

[0006] Preferably, the stop is inclined, and its top is slidably connected to the bottom of the sleeper beam. By setting the stop in an inclined shape, it can better fit the side of the sleeper and limit its movement.

[0007] Preferably, a locking pin is slidably connected to the back of the pad beam, and the locking pin is configured to penetrate the pad beam. One end of the locking pin is fixedly inserted into the knob, and the other end of the locking pin is fixedly connected to a pull tab. The locking pin can be inserted into the knob from the side, and has a locking and anti-loosening function after the knob and the bidirectional screw are rotated for adjustment.

[0008] Preferably, the knob has multiple insertion holes on its circumferential surface, and these holes are arranged in a circular array along the circumferential surface of the knob, with the end of the locking pin located inside one of the insertion holes. By providing multiple insertion holes on the circumferential surface of the knob, the locking pin can have a corresponding insertion position after the knob rotates with the bidirectional screw.

[0009] Preferably, a retaining ring is fixedly connected to the pin body of the locking pin. The retaining ring contacts the circumferential surface of the knob. A spring is sleeved on the outer side of the pin body of the locking pin. One end of the spring is fixedly connected to the retaining ring, and the other end of the spring is fixedly connected to the inner wall of the pad beam. The spring force can act on the locking pin through the retaining ring, which not only ensures that the locking pin is always inserted into the knob, but also has an auxiliary resetting function.

[0010] Preferably, two guide rods are fixedly connected to the back of the pad beam. The guide rods pass through the pull tab and are slidably connected to the pull tab. A limit block is fixedly connected to the end of the guide rod. The pull tab and the locking pin have a guiding function during the horizontal pulling process, while the limit block has a limiting function for the stroke of the locking pin.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model achieves precise and efficient adjustment of sleeper spacing by setting a bidirectional screw and sliding block structure. The operator only needs to rotate the central knob to drive the two side blocks to move synchronously in opposite directions or in opposite directions, ensuring that the blocks are always symmetrical with the pad beam as the center line. This symmetrical adjustment method not only improves the accuracy of spacing setting and effectively avoids the cumulative errors that may be caused by manual measurement and positioning, but also greatly simplifies the operation process, saving time and effort.

[0013] 2. This utility model, based on convenient adjustment, adds a mechanical locking mechanism consisting of a locking pin, a spring, and a knob socket. This effectively enhances the stability of the equipment during operation. After the spacing is adjusted, under the continuous pressure of the spring, the locking pin automatically engages with the corresponding socket of the knob, effectively preventing accidental rotation of the knob and screw rotation caused by construction collisions. This rigid locking provides a guarantee for the positioning of the sleepers, improving the safety and reliability of the entire laying project. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A front sectional view;

[0016] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0017] Figure 4 This utility model Figure 1 Top sectional view of the partial structure;

[0018] Figure 5 This utility model Figure 4 Enlarged view of point B;

[0019] Figure 6 This utility model Figure 1 A schematic diagram of the mounting sleeve structure;

[0020] Figure 7 This utility model Figure 1 A partial structural diagram.

[0021] In the diagram: 1. Pad beam; 2. Mounting sleeve; 21. Ball bearing; 3. Double-acting screw; 4. Knob; 5. Sliding block; 6. Guide block; 7. Stop block; 8. Locking pin; 9. Retaining ring; 10. Spring; 11. Pull tab; 12. Guide rod; 13. Limiting block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6The sleeper spacing control fixture includes a pad beam 1, which is a rectangular box shape. Mounting sleeves 2 are bolted to the left and right walls of the pad beam 1. Ball bearings 21 are embedded in the inner ring wall of the mounting sleeves 2, and these ball bearings 21 contact the circumferential surface of a bidirectional screw 3. By setting the ball bearings 21 in the inner ring wall of the mounting sleeves 2, and ensuring a complete circle of ball bearings 21, the relative friction between the bidirectional screw 3 and the mounting sleeves 2 can be reduced. The two mounting sleeves 2 are rotatably connected to the bidirectional screw 3. The bidirectional screw 3 has symmetrically arranged forward and reverse threads. A knob 4 is fixedly connected to the middle section of the bidirectional screw 3. Two sliding blocks 5 are threaded to the outer side of the bidirectional screw 3, and these sliding blocks 5 are slidably connected to the inside of the pad beam 1. A guide block 6 is fixedly connected to the bottom of the sliding block 5, penetrating the bottom of the pad beam 1 and slidably connected to it. A stop block 7 is fixedly connected to the bottom of the guide block 6, and the stop block 7 is inclined, with its top slidably connected to the bottom of the pad beam 1. By setting the stop 7 to an inclined shape, it can better fit the side of the sleeper and limit its movement.

[0024] Please see Figure 4 , Figure 5 , Figure 7 A locking pin 8 is slidably connected to the back of the pad beam 1, and the locking pin 8 is set through the pad beam 1. One end of the locking pin 8 is fixedly inserted into the knob 4, and the other end of the locking pin 8 is fixedly connected to the pull tab 11. The locking pin 8 can be inserted into the knob 4 from the side, and has the function of locking and preventing loosening after the knob 4 and the bidirectional screw 3 are rotated and adjusted. Multiple insertion holes are opened on the circumferential surface of the knob 4, and the multi-hole insertion holes are distributed in a ring array along the circumferential surface of the knob 4. The end of the locking pin 8 is located in the insertion hole. By setting multiple insertion holes on the circumferential surface of the knob 4, the locking pin 8 can have a corresponding insertion position after the knob 4 rotates with the bidirectional screw 3. A retaining ring 9 is fixedly connected to the pin body of the locking pin 8. The retaining ring 9 contacts the circumferential surface of the knob 4. A spring 10 is sleeved on the outside of the pin body of the locking pin 8. One end of the spring 10 is fixedly connected to the retaining ring 9, and the other end of the spring 10 is fixedly connected to the inner wall of the pad beam 1. The elastic force of spring 10 acts on the locking pin 8 through the retaining ring 9, ensuring that the locking pin 8 is always inserted into the knob 4 and also assisting in its reset. Two guide rods 12 are fixedly connected to the back of the pad beam 1. The guide rods 12 pass through the pull tab 11 and are slidably connected to it. A limit block 13 is fixedly connected to the end of the guide rod 12. The pull tab 11 and the locking pin 8 provide guidance during horizontal pulling, while the limit block 13 limits the travel of the locking pin 8.

[0025] The specific implementation process of this utility model is as follows: In use, the operator first needs to pull the pull tab 11 fixed to one end of the locking pin 8. The pull tab 11 drives the locking pin 8 to overcome the elastic force of the spring 10 and slide backward along the guide rod 12, so that its end completely exits from the insertion hole on the circumferential surface of the knob 4. At this time, the rotation constraint of the knob 4 and the bidirectional screw 3 fixed thereto is released, and it can rotate freely. Then, the operator can insert a rod into the insertion hole of the knob 4 and rotate the knob 4. Since the knob 4 is fixed in the middle section of the bidirectional screw 3, it will drive the bidirectional screw 3 to rotate together in the left and right mounting sleeves 2. When the bidirectional screw 3 rotates, the two sliding blocks 5 that mesh with the two threads will move synchronously along the axis of the bidirectional screw 3 inside the pad beam 1 due to the action of the thread pair. The sliding block 5 moves towards or away from the ground. The movement of the sliding block 5 is transmitted to the stop block 7 through the bottom guide block 6, thereby causing the stop block 7 to move towards or away from the ground. The operator can adjust the width between the two inclined stop blocks 7 to be equal to the required sleeper spacing by observing or using a ruler. When the spacing is adjusted to the correct position, the operator slowly releases the pull tab 11, the spring 10 returns to its original position, and the locking pin 8 returns to its original position through the retaining ring 9. This allows the locking pin 8 to be inserted into the socket on the currently aligned knob 4. Finally, the adjusted and locked fixture is placed horizontally on a flat ground or track bed, so that the two stop blocks 7 are located between the two sleepers whose spacing needs to be controlled. Then, the ends of the two sleepers are placed close to the inclined surfaces of the two stop blocks 7 in sequence. At this time, the spacing between the two sleepers is precisely fixed.

[0026] 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 sleeper spacing control fixture, including a pad beam (1), characterized in that: The pad beam (1) is a rectangular box shape. The inner left and right walls of the pad beam (1) are fitted with mounting sleeves (2) by bolts. The two mounting sleeves (2) are rotatably connected to a double screw (3). A knob (4) is fixedly connected to the middle section of the double screw (3). Two sliding blocks (5) are threadedly connected to the outer side of the double screw (3). The sliding blocks (5) are slidably connected to the inside of the pad beam (1). A guide block (6) is fixedly connected to the bottom of the sliding block (5). The guide block (6) penetrates the bottom of the pad beam (1) and is slidably connected to the pad beam (1). A stop block (7) is fixedly connected to the bottom of the guide block (6).

2. The sleeper spacing control fixture according to claim 1, characterized in that: The inner ring wall of the mounting sleeve (2) is embedded with a ball (21), which is in contact with the circumferential surface of the bidirectional screw (3).

3. The sleeper spacing control fixture according to claim 1, characterized in that: The stop block (7) is inclined, and the top of the stop block (7) is slidably connected to the bottom of the pad beam (1).

4. The sleeper spacing control fixture according to claim 1, characterized in that: The back of the pad beam (1) is slidably connected with a locking pin (8), and the locking pin (8) is set through the pad beam (1). One end of the locking pin (8) is fixedly inserted into the knob (4), and the other end of the locking pin (8) is fixedly connected to a pull tab (11).

5. The sleeper spacing control fixture according to claim 4, characterized in that: The knob (4) has multiple holes on its circumferential surface, and the multiple holes are arranged in a ring array along the circumferential surface of the knob (4). The end of the locking pin (8) is located inside the hole.

6. The sleeper spacing control fixture according to claim 4, characterized in that: A retaining ring (9) is fixedly connected to the pin body of the locking pin (8). The retaining ring (9) contacts the circumferential surface of the knob (4). A spring (10) is sleeved on the outside of the pin body of the locking pin (8). One end of the spring (10) is fixedly connected to the retaining ring (9), and the other end of the spring (10) is fixedly connected to the inner wall of the pad beam (1).

7. The sleeper spacing control fixture according to claim 4, characterized in that: The back of the pad beam (1) is fixedly connected to two guide rods (12), the guide rods (12) pass through the pull tab (11) and are slidably connected to the pull tab (11), and the end of the guide rod (12) is fixedly connected to a limit block (13).

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