A combined motor train unit air cylinder fixing tool

Abstract

This utility model discloses a combined EMU (Electric Multiple Unit) air cylinder fixing fixture, relating to the field of EMUs. It includes a supporting mounting base, on the upper surface of which a fixed sliding frame is mounted. Inside the fixed sliding frame is a meshing transmission mechanism for raising and lowering a series lifting plate. The meshing transmission mechanism includes an engaging sliding rod, which is slidably installed inside the fixed sliding frame. When adjusting the diameter of air cylinders of different sizes, this combined EMU air cylinder fixing fixture directly starts the drive motor to drive the connecting transmission belt. The rotation of the connecting transmission belt adjusts the series lifting plate up and down through two sets of meshing auxiliary worm gears. The air cylinder is positioned between the two sets of auxiliary rolling rods, and the kinetic energy of the air cylinder is dissipated by the rotation of the auxiliary rolling rods. This design makes the air cylinder more stable during fixing operations and provides a stronger cushioning effect against the impact of the air cylinder's own weight.

Description

Technical Field

[0001] This utility model relates to the field of high-speed train technology, specifically a combined high-speed train air cylinder fixing fixture. Background Technology

[0002] The air cylinder is one of the important components of a high-speed train. Its function is to store compressed air and provide the train's ventilation equipment with dry and clean compressed air at the specified pressure to ensure the safe braking and reliable and stable normal operation of the entire train.

[0003] After production, existing air cylinders need to be moved. However, during the transfer process, the air cylinders are prone to shaking. Also, due to their cylindrical structure, they are easily affected by external factors and may roll off, which is not safe and reliable.

[0004] To overcome the above-mentioned defects, the prior art (Chinese patent application date: CN218055297U, filed on 2022-12-16) discloses a safe and reliable cylinder fixing device for high-speed trains, including a cylinder transfer bracket, a right-side fixing plate, a left-side fixing plate, and an arc-shaped top block. The cylinder transfer bracket has multiple supporting rubber pads of equal size at its upper end and its lower inner end. Multiple right-side fixing plates of equal size are also provided, and these plates are longitudinally fixed to the upper end and lower inner end of the cylinder transfer bracket, respectively affixed to the right end of the multiple supporting rubber pads. Multiple left-side fixing plates of equal size are also provided. This design solves the problem that the original cylinder is prone to shaking during transfer, and due to its cylindrical structure, it is easily affected by external factors and may roll off, making it unsafe and unreliable. This utility model has a reasonable structure, good practicality, and can limit and fix the transferred cylinder, preventing it from shaking or rolling, thus ensuring sufficient safety and reliability.

[0005] While the above design can solve the aforementioned problems, the effect of fixing the air cylinder solely with the arc-shaped top block is not good when it is necessary to perform the operation. After long-term use, the installation of the top block will become loose, and the cushioning force for the air cylinder's own weight impact is weak. In addition, it is inconvenient due to insufficient adaptability to different sizes. Furthermore, the existing design has insufficient limit design at both ends, and the bolt fixing design requires manual assistance. Moreover, the fixing mechanism will loosen when the whole body shakes, making it unreliable and the fixing method not intelligent enough. Utility Model Content

[0006] The purpose of this utility model is to provide a combined EMU air cylinder fixing fixture to solve the problems mentioned in the background art, such as the poor fixing effect of relying solely on the arc-shaped top block when the air cylinder needs to be fixed, the loosening of the top block installation after long-term use, the weak buffering force against the impact of the air cylinder's own weight, the inconvenience of insufficient adaptability to different sizes, the inadequate end-limiting design of the existing design, the need for manual assistance in bolt fixing, and the loosening of the fixing mechanism when the whole is shaken, making the fixing method unreliable and not intelligent enough.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a combined EMU air cylinder fixing fixture, including a support mounting base, a fixed sliding frame mounted on the upper surface of the support mounting base, and a meshing transmission mechanism for lifting and lowering a series lifting plate installed inside the fixed sliding frame. The meshing transmission mechanism includes a locking sliding rod, which is slidably installed inside the fixed sliding frame. A fixed meshing rack is mounted on the back of the locking sliding rod, and a fixed rotating auxiliary frame is mounted on the back of the fixed sliding frame. A meshing auxiliary worm gear is installed inside the fixed rotating auxiliary frame, and the fixed meshing rack meshes with the meshing auxiliary worm gear. A retractable locking frame is mounted on the lower surface of the series lifting plate, and an elastic sliding mechanism for sliding a side end limiting rod left and right is installed inside the retractable locking frame.

[0008] Furthermore, the elastic sliding mechanism includes an auxiliary rolling rod, which is rotatably mounted inside the support mounting base, and the side end limiting rod is slidably mounted inside the shrink fitting frame.

[0009] Furthermore, the side-end limiting rod is L-shaped, and a compression return spring is installed inside the shrink fitting frame. The other end of the compression return spring is fixedly installed at the end of the side-end limiting rod, and a positioning transverse auxiliary rod is installed on the outer surface of the side-end limiting rod. A sliding inner groove is opened on the outer surface of the shrink fitting frame, and the positioning transverse auxiliary rod slides along the inside of the sliding inner groove.

[0010] Furthermore, a series lifting plate is installed on the inner surface of the fitting sliding rod, and the fitting sliding rod is fixedly installed on the lower surface of the series lifting plate. Two sets of the fixed sliding frame, fitting sliding rod, fixed meshing rack and fixed rotating auxiliary frame and meshing auxiliary worm gear are symmetrically installed about the center point of the series lifting plate, and the two sets of fitting sliding rods are respectively fixedly installed on the left and right sides of the lower surface of the series lifting plate.

[0011] Furthermore, a drive motor is installed on the upper surface of the series lifting plate, and a connecting transmission belt is installed on the outer surface of the lower output end of the drive motor. The inner surfaces of the connecting transmission belt are slidably mounted on the outer surfaces of two sets of meshing auxiliary worm gears, and the drive motor is fixedly mounted on the upper surface of the series lifting plate.

[0012] Furthermore, the inner surface of the fixed sliding frame contacts the outer surface of the fitted sliding rod to form a sliding structure, and the outer surface of the fixed meshing rack contacts the outer surface of the meshing auxiliary worm to form a meshing structure. The outer surface of the meshing auxiliary worm contacts the inner surface of the connecting transmission belt to form a sliding structure, and the drive motor contacts the upper outer surface of the meshing auxiliary worm through the inner surface of the connecting transmission belt to form a transmission structure.

[0013] Furthermore, a rolling friction ball is installed on the inner surface of the end of the side-end limiting rod, and two sets of the side-end limiting rod, the rolling friction ball, and the positioning transverse auxiliary rod are symmetrically installed about the center point of the shrink fitting frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: When the combined EMU uses a cylinder fixing fixture, and it is necessary to adjust the diameter of cylinders of different sizes, the drive motor is directly started to drive the connecting transmission belt. The rotation of the connecting transmission belt will adjust the series lifting plate up and down through two sets of meshing auxiliary worm gears. The position of the cylinder is located in the middle of the two sets of auxiliary rolling rods. The kinetic energy of the cylinder will be dissipated due to the rotation of the auxiliary rolling rods. This design makes the cylinder more stable during the fixing operation and has a stronger cushioning effect against the impact of the cylinder's own weight.

[0015] Furthermore, after completing the design for adjusting the dimensions of the air duct, the extension length of the side end limiting rods is directly adjusted according to the front and rear length of the air duct. This allows the two sets of side end limiting rods to fit and stabilize the corresponding two sides of the air cylinder. The compression and reset spring recovers the elastic potential energy and firmly embeds the air cylinder. This design makes the existing end limiting design more intelligent. The fixing mechanism will not loosen when the whole body shakes, and the fixing method is more reliable.

[0016] Furthermore, when the air cylinder oscillates due to shaking, it will rotate above the auxiliary rolling rod. When it slides back and forth, the design of the compression return spring will also give the air cylinder a better buffering effect, so that it will not cause damage to the equipment and the exterior of the air cylinder after long-term use. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the support and mounting base of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the connecting transmission belt of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the fixed sliding frame of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the rolling friction ball of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the sliding inner groove of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the auxiliary rolling rod of this utility model.

[0023] In the diagram: 1. Support mounting base; 2. Auxiliary rolling rod; 3. Compression return spring; 4. Fixed sliding frame; 5. Engaging sliding rod; 6. Fixed meshing rack; 7. Fixed rotating auxiliary frame; 8. Meshing auxiliary worm gear; 9. Drive motor; 10. Connecting transmission belt; 11. Series lifting plate; 12. Retractable meshing frame; 13. Sliding inner groove; 14. Side end limiting rod; 15. Rolling friction ball; 16. Positioning transverse auxiliary rod. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figures 1-6 The present invention provides the following technical solution: a combined EMU air cylinder fixing fixture, including a support mounting base 1, a fixed sliding frame 4 installed on the upper surface of the support mounting base 1, and a meshing transmission mechanism for lifting and lowering a series lifting plate 11 installed inside the fixed sliding frame 4. The meshing transmission mechanism includes a fitting sliding rod 5, which is slidably installed inside the fixed sliding frame 4. A fixed meshing rack 6 is installed on the back of the fitting sliding rod 5, and a fixed rotating auxiliary frame 7 is installed on the back of the fixed sliding frame 4. A meshing auxiliary worm gear 8 is installed inside the fixed rotating auxiliary frame 7, and the fixed meshing rack 6 and the meshing auxiliary worm gear 8 mesh with each other. A retractable fitting frame 12 is installed on the lower surface of the series lifting plate 11, and an elastic sliding mechanism for sliding left and right on a side end limiting rod 14 is installed inside the retractable fitting frame 12.

[0026] like Figure 1 , Figure 2 , Figure 3The technical solution shown addresses the problems of ineffective fixation using only an arc-shaped top block during cylinder fixing operations, leading to loosening of the top block after prolonged use, weak impact buffering against the cylinder's own weight, and inconvenience due to insufficient adaptability to different sizes. The solution discloses a method where: a connecting lifting plate 11 is mounted on the inner surface of the sliding rod 5, and the sliding rod 5 is fixedly installed on the lower surface of the connecting lifting plate 11. Two sets of components—fixed sliding frame 4, sliding rod 5, fixed meshing rack 6, fixed rotating auxiliary frame 7, and meshing auxiliary worm gear 8—are symmetrically installed about the center point of the connecting lifting plate 11. The two sets of sliding rods 5 are respectively fixedly installed on the left and right sides of the lower surface of the connecting lifting plate 11. A drive motor 9 is mounted on the upper surface of the series lifting plate 11, and a connecting transmission belt 10 is mounted on the outer surface of the lower output end of the drive motor 9. The inner surfaces of the connecting transmission belt 10 are slidably mounted on the outer surfaces of two sets of meshing auxiliary worm gears 8, respectively. The drive motor 9 is fixedly mounted on the upper surface of the series lifting plate 11. The inner surface of the fixed sliding frame 4 contacts the outer surface of the fitted sliding rod 5 to form a sliding structure, and the outer surface of the fixed meshing rack 6 contacts the outer surface of the meshing auxiliary worm gear 8 to form a meshing structure. The outer surface of the meshing auxiliary worm gear 8 contacts the inner surface of the connecting transmission belt 10 to form a sliding structure, and the drive motor 9 contacts the upper outer surface of the meshing auxiliary worm gear 8 through the inner surface of the connecting transmission belt 10 to form a transmission structure.

[0027] When it is necessary to adjust the fixed position according to the size of the air cylinder, firstly, start the drive motor 9 fixedly installed on the upper surface of the series lifting plate 11. The drive motor 9 drives the externally contacting transmission belt 10 to rotate through the rotation of the lower output end. Since the two ends of the inner surface of the transmission belt 10 are respectively nested on the top outer surface of the two sets of meshing auxiliary worm gears 8, the meshing auxiliary worm gears 8 are driven to rotate continuously inside the fixed rotating auxiliary frame 7. Since the fixed rotating auxiliary frame 7 is fixedly installed on the outer surface of the fixed sliding frame 4, and the fixed sliding frame 4 is fixedly installed on the support mounting base 1... On the left and right sides of the upper surface, the meshing auxiliary worm 8 rotates vertically continuously. As the meshing auxiliary worm 8 rotates, it drives the fixed meshing rack 6 that is in contact with each other on the inner side and generates a meshing motion. The fixed meshing rack 6 moves up and down under the drive of the meshing motion. Since the fixed meshing rack 6 is fixedly installed on the lower surface of the interlocking sliding rod 5, the interlocking sliding rod 5 moves up and down synchronously at all times. There are two sets of interlocking sliding rods 5 symmetrically fixedly installed on the left and right sides about the center point of the series lifting plate 11. Therefore, the movement of the interlocking sliding rod 5 will drive the series lifting plate 11 synchronously. This design makes the equipment more versatile.

[0028] Example 2: Figure 4 , Figure 5 , Figure 6The technical solution shown addresses the problems of insufficient end-limiting design, manual assistance required for bolt fixing, and loosening of the fixing mechanism during overall shaking, making the fixing method unreliable and unintelligent. It discloses an elastic sliding mechanism including an auxiliary rolling rod 2, rotatably mounted inside the support mounting base 1. A side-limiting rod 14 is slidably mounted inside the shrink-fit frame 12, with an L-shaped design. A compression return spring 3 is installed inside the shrink-fit frame 12, with the other end of the compression return spring 3 fixedly mounted at the end of the side-limiting rod 14. A positioning transverse auxiliary rod 16 is mounted on the outer surface of the side-limiting rod 14. A sliding inner groove 13 is formed on the outer surface of the shrink-fit frame 12, and the positioning transverse auxiliary rod 16 slides along the inner surface of the sliding inner groove 13. A rolling friction ball 15 is mounted on the inner surface of the end of the side-limiting rod 14. Two sets of side-limiting rods 14, rolling friction balls 15, and positioning transverse auxiliary rods 16 are symmetrically installed about the center point of the shrink-fit frame 12.

[0029] After adjusting the diameter of the air cylinder, it is necessary to perform corresponding upper and lower limit fixing operations on the air cylinder. The air cylinder is placed above the auxiliary rolling rod 2. Since the auxiliary rolling rod 2 is rotatably installed inside the support mounting base 1, the placement of the air cylinder will only roll left and right without any positional deviation. First, stretch the side limit rod 14 outward along the inside of the shrink fitting frame 12 to perform an auxiliary extension operation until the extension length matches the height of the air cylinder. When performing the extension operation of the side limit rod 14, the end of the side limit rod 14 will correspondingly stretch the compression return spring 3. Since the other end of the compression return spring 3 is fixedly installed on the shrink fitting frame 12... Inside the cylinder, the compression return spring 3 will stretch and extend during the diameter adjustment process. When the side limit rod 14 reaches the accurate fixed size, the rolling friction ball 15 fixedly installed on the inner surface of the end of the side limit rod 14 will simultaneously contact the side of the air cylinder, ensuring that the air cylinder maintains a stable limiting effect when it rolls. When the side limit rod 14 slides left and right, the positioning transverse auxiliary rod 16 fixedly installed on the outer surface will move synchronously, and the positioning transverse auxiliary rod 16 will slide along the sliding inner groove 13 opened at the corresponding position on the outer surface of the shrink fitting frame 12. This design makes the equipment have higher buffering performance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined EMU air cylinder fixing fixture, including a support mounting base (1), wherein a fixed sliding frame (4) is installed on the upper surface of the support mounting base (1), and a meshing transmission mechanism for lifting and lowering a series lifting plate (11) is installed inside the fixed sliding frame (4). characterized in that The meshing transmission mechanism includes a meshing sliding rod (5), which is slidably installed inside the fixed sliding frame (4). A fixed meshing rack (6) is installed on the back of the meshing sliding rod (5), and a fixed rotating auxiliary frame (7) is installed on the back of the fixed sliding frame (4). A meshing auxiliary worm (8) is installed inside the fixed rotating auxiliary frame (7), and the fixed meshing rack (6) meshes with the meshing auxiliary worm (8). A shrinking meshing frame (12) is installed on the lower surface of the series lifting plate (11), and an elastic sliding mechanism for sliding the side end limiting rod (14) left and right is installed inside the shrinking meshing frame (12).

2. The air cylinder fixing tool for a combined motor train unit according to claim 1, characterized in that: The elastic sliding mechanism includes an auxiliary rolling rod (2), which is rotatably mounted inside the support mounting base (1), and the side end limiting rod (14) is slidably mounted inside the shrink fitting frame (12).

3. The air cylinder fixing tool for a combined motor train unit according to claim 2, characterized in that: The side-end limiting rod (14) is L-shaped, and a compression return spring (3) is installed inside the shrink fitting frame (12). The other end of the compression return spring (3) is fixedly installed at the end of the side-end limiting rod (14), and a positioning transverse auxiliary rod (16) is installed on the outer surface of the side-end limiting rod (14). A sliding inner groove (13) is opened on the outer surface of the shrink fitting frame (12), and the positioning transverse auxiliary rod (16) slides along the inside of the sliding inner groove (13).

4. The air cylinder fixing tool for a combined motor train unit according to claim 1, characterized in that: The inner surface of the fitting sliding rod (5) is equipped with a series lifting plate (11), and the fitting sliding rod (5) is fixedly installed on the lower surface of the series lifting plate (11). The fixed sliding frame (4), the fitting sliding rod (5), the fixed meshing rack (6), the fixed rotating auxiliary frame (7), and the meshing auxiliary worm gear (8) are symmetrically installed on the left and right sides about the center point of the series lifting plate (11), and the two sets of fitting sliding rods (5) are respectively fixedly installed on the left and right sides of the lower surface of the series lifting plate (11).

5. The air cylinder fixing tool for a combined motor train unit according to claim 4, characterized in that: The upper surface of the series lifting plate (11) is equipped with a drive motor (9), and the outer surface of the lower output end of the drive motor (9) is equipped with a connecting transmission belt (10). The inner surfaces of the connecting transmission belt (10) are respectively slidably installed on the outer surfaces of two sets of meshing auxiliary worm gears (8), and the drive motor (9) is fixedly installed on the upper surface of the series lifting plate (11).

6. The air cylinder fixing tool for a combined motor train unit according to claim 5, characterized in that: The inner surface of the fixed sliding frame (4) contacts the outer surface of the fitted sliding rod (5) to form a sliding structure, and the outer surface of the fixed meshing rack (6) contacts the outer surface of the meshing auxiliary worm (8) to form a meshing structure. The outer surface of the meshing auxiliary worm (8) contacts the inner surface of the connecting transmission belt (10) to form a sliding structure, and the drive motor (9) contacts the upper outer surface of the meshing auxiliary worm (8) through the inner surface of the connecting transmission belt (10) to form a transmission structure.

7. The air cylinder fixing tool for a combined motor train unit according to claim 3, characterized in that: The inner surface of the end of the side end limiting rod (14) is provided with a rolling friction ball (15), and the side end limiting rod (14), the rolling friction ball (15) and the positioning transverse auxiliary rod (16) are symmetrically installed in two groups about the center point of the shrinkable embedded frame (12).

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