Dismounting device for brake shoe drill rod of HXD2 type locomotive

Abstract

The utility model discloses an HXD2 type locomotive brake shoe drill rod dismounting device which aims at solving the technical problem that time and labor are consumed when an HXD2 type locomotive brake shoe drill rod is dismounted in the prior art. Through cooperative work of the box body, the drawing rod, the large bolt and the small bolt, the dismounting process of the brake shoe drill rod is simpler and more convenient, and operation is easy. The box body is connected to a boss of a brake head in a sleeving mode and locked through the small bolt, the lower portion of a side rod of the drawing rod is connected through the bottom plate and can be connected to a brake-shoe drill rod in a sleeving mode, the large bolt and the top of the drawing rod are in screw-nut fit, and lifting of the drawing rod is achieved by rotating the large bolt. Therefore, the tightly plugged brake shoe drill rod is gradually pulled out under the action of strong static pulling force.

Description

Technical Field

[0001] The utility model relates to the field of replacement and maintenance of railway locomotive brake shoes, in particular to a locomotive brake shoe disassembly device. Background Art

[0002] The HXD2 locomotive is an important electric locomotive in railway transportation, mainly used for railway freight. This locomotive uses tread braking and has strong power and traction. It can pull a 7,000-ton heavy-load train on a single unit; through wireless coupling of multiple units, it can also meet the traction requirements of heavy-load trains over 20,000 tons. The axle weight of the HXD2 locomotive is designed to be 25 tons, but after removing the counterweight inside the car, the axle weight can be adjusted to 23 tons to adapt to different track conditions. In addition, the locomotive can operate normally in extremely low temperature environments. For example, it can still be stored and used normally in an environment of -40°C, and can be used normally after taking heating and anti-cold measures.

[0003] However, during use, the HXD2 locomotive's braking system encountered some technical issues. The locomotive's brake shoes were installed on the brake shoe holder using a brake shoe pick. The brake shoe pick is a high-hardness steel forging. Long-term braking operation of the locomotive caused the brake shoe pick to interfere with the brake shoe holder and cause serious jamming, making the brake shoe pick difficult to remove. Furthermore, the operators had to work in a narrow operating space to replace the brake shoes, further increasing the difficulty of removal and making the replacement operation time-consuming and labor-intensive.

[0004] A puller is a commonly used mechanical maintenance tool, primarily used to remove damaged bearings axially from shafts. Its working principle involves the coordinated use of a handle, a screw, and a pull claw. The screw tip is positioned in the top hole at the shaft end, the pull claw is adjusted so that it hooks onto the outer ring of the bearing, and the handle is rotated to cause the pull claw to move the bearing axially outward for removal. Applying a similar principle, a brake shoe puller removal solution with a simple structure, easy operation, and high labor efficiency can be provided. This improves brake shoe puller removal efficiency, reduces workload, and shortens replacement time, thereby enhancing locomotive maintenance efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a HXD2 type locomotive brake shoe drill disassembly device to overcome the shortcomings of the prior art in that the disassembly of the HXD2 type locomotive brake shoe drill is time-consuming and labor-intensive.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A brake shoe removal device for HXD2 locomotives includes a housing, which serves as the main frame of the entire device and provides a mounting base and support for other components. A pull rod is mounted on the housing, and a matching hole is formed in the housing. The pull rod is installed through the matching hole and through the upper end surface of the housing.

[0008] The upper end of the pull rod is connected to a large bolt via a large nut, the end of which abuts the upper end surface of the box body. The large bolt forms a screw nut with the top of the pull rod and is the main component that generates the pulling force. During use, the large bolt is rotated to lift the pull rod, thereby gradually extracting the tightly blocked brake shoe drill under the action of strong static pulling force.

[0009] A number of small bolts are arranged on both sides of the box body. The box body is sleeved on the brake shoe support boss and is locked by the small bolts, thereby ensuring the stability and reliability of the device.

[0010] Furthermore, the number of the matching holes on the box body is two.

[0011] Furthermore, the pull rod includes two side rods, an upper top plate, and a lower bottom plate. The side rods extend through matching holes, the lower ends of the side rods are connected to the lower bottom plate, and the upper ends of the side rods are connected to the upper top plate. The pull rod transmits tension, and the lower ends of the side rods of the pull rod are connected to the bottom plate, which can be sleeved on the brake shoe drill.

[0012] Furthermore, the side rod of the pull rod and the matching hole are clearance-fitted, which ensures the adjustability of the pull rod when hanging it on the brake shoe chisel, allowing appropriate adjustment and movement to adapt to different installation conditions and alignment requirements, so that the device can adapt to different disassembly situations and avoid the pull rod and the matching hole from getting stuck.

[0013] Furthermore, the large nut is installed in the upper top plate.

[0014] Furthermore, a limit block is provided at the contact position between the upper end surface of the box body and the large bolt.

[0015] Furthermore, a reinforcing rib is installed inside the box to enhance the structural strength of the box and prevent deformation or damage due to force.

[0016] Furthermore, each side of the box body is provided with a through hole.

[0017] Furthermore, a small nut is welded next to the through hole, and the small bolt is mounted on the side of the box body through the small nut. The small bolt secures the box body and the brake shoe support, ensuring the stability of the device. During use, the small bolt locks the box body and the brake shoe support, providing a stable support point for the pull rod.

[0018] Furthermore, the bottom of the box is open, and the specific structure of the box is a top plate and two side plates.

[0019] Compared with the prior art, the present invention has the following beneficial technical effects:

[0020] The present invention proposes a brake shoe pick disassembly device for an HXD2 type locomotive, comprising a housing, a large bolt, a pull rod and a small bolt. Through the coordinated work of the housing, the pull rod, the large bolt and the small bolt, the brake shoe pick disassembly process is made simpler and easier to operate. The housing is sleeved on the brake shoe support boss and locked by the small bolt. The lower part of the side rod of the pull rod is connected by a base plate and can be sleeved on the brake shoe pick. The large bolt forms a screw nut with the top of the pull rod. The pull rod is lifted by rotating the large bolt, thereby gradually pulling out the tightly plugged brake shoe pick under the action of a strong static tensile force. Compared with the traditional disassembly method, the use of the disassembly device described in the present invention can significantly reduce the disassembly time of the brake shoe pick, and can quickly and effectively disassemble the brake shoe pick, thereby improving the maintenance efficiency of the locomotive. Furthermore, the use of the disassembly device described in the present invention can realize effective brake shoe pick disassembly in a narrow operating space, solving the problem that the traditional method is difficult to operate when the space is limited.

[0021] Furthermore, in the present invention, the side rod of the pulling rod and the matching hole are transitionally matched, that is, the diameter of the matching hole is slightly larger than the diameter of the side rod of the pulling rod, thereby ensuring the adjustability of the pulling rod when hanging on the brake shoe drill.

[0022] Furthermore, the interior of the box body of the present invention is designed with reinforcing ribs to ensure its strength during use and to prevent deformation, cracking, and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a brake shoe removal device for HXD2 locomotive in an embodiment of the present utility model.

[0024] Figure 2 This is a schematic diagram of the box structure of a brake shoe removal device for HXD2 locomotive in an embodiment of the present utility model.

[0025] In the figure, 1 is the box body, 2 is the large bolt, 3 is the pull rod, 4 is the small bolt, 5 is the reinforcing rib plate, and 6 is the matching hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "several" means two or more, unless otherwise specifically defined.

[0030] Example:

[0031] like Figures 1 to 2 The figure shows an HXD2 locomotive brake shoe removal device according to an embodiment of the present invention. The device comprises a housing 1, which serves as the main framework of the device and provides a mounting base and support for other components. A pull rod 3 is mounted on the housing 1. A mating hole 6 is formed in the housing 1, through which the pull rod 3 is installed on the upper end face of the housing 1.

[0032] The upper end of the pull rod 3 is connected to a large bolt 2 via a large nut 31. The end of the large bolt 2 abuts the upper end surface of the box body 1. The large bolt 2 forms a screw nut with the top of the pull rod 3 and is the main component for generating tension. During use, the large bolt 2 is rotated to lift the pull rod 3, thereby gradually extracting the blocked brake shoe drill under the strong static pulling force.

[0033] Several small bolts 4 are arranged on both sides of the box body 1. Preferably, one small bolt 4 is arranged on each side of the box body. The box body 1 is sleeved on the brake shoe support boss and is locked by the small bolts 4 to ensure the stability and reliability of the device.

[0034] Preferably, in this embodiment, there are two matching holes 6 on the box body 1.

[0035] Preferably, the pulling rod 3 in this embodiment includes two side rods 33, an upper top plate 32, and a lower bottom plate 34. The side rods 33 respectively pass through the matching holes 6. The lower ends of the side rods 33 are connected through the lower bottom plate 34, and the upper ends of the side rods 33 are connected through the upper top plate 32. The pulling rod 3 transmits tension, and the lower parts of the side rods of the pulling rod are connected through the bottom plate, which can be sleeved on the brake shoe drill.

[0036] Preferably, the side rod 33 of the pulling rod 3 in this embodiment is clearance-fitted with the mating hole 6, ensuring the adjustability of the pulling rod 3 when hanging it on the brake shoe chisel, allowing appropriate adjustment and movement to adapt to different installation conditions and alignment requirements, so that the device can adapt to different disassembly situations and avoid the pulling rod 3 and the mating hole 6 from getting stuck.

[0037] Preferably, the large nut 31 in this embodiment is installed in the upper top plate 32 .

[0038] Preferably, in this embodiment, a limit block 11 is provided at the contact position between the upper end surface of the box body 1 and the large bolt 2 .

[0039] Preferably, a reinforcing rib 5 is installed inside the box body 1 in this embodiment to enhance the structural strength of the box body 1 and prevent deformation or damage caused by stress.

[0040] Preferably, in this embodiment, each side of the box body 1 is provided with a through hole 12 .

[0041] Preferably, in this embodiment, a small nut 41 is welded next to the through hole 12, and the small bolt 4 is mounted on the side of the housing 1 via the small nut 41. The small bolt 4 secures the housing 1 and the brake shoe support, ensuring the stability of the device. During use, the small bolt 4 locks the housing and the brake shoe support, providing a stable support point for the pull rod 3.

[0042] Preferably, the bottom of the box body 1 in this embodiment is open, and the specific structure of the box body 1 is a top plate and two side plates. This solves the problem that the traditional method is difficult to operate when the space is limited, and allows effective brake shoe drill removal to be performed even in a narrow operating space.

[0043] When in use, hang the pulling rod 3 on the raised part of the brake shoe chisel to ensure that the pulling rod 3 can be correctly aligned with the brake shoe chisel and prepare for applying tension. Put the box body 1 on the brake shoe support boss. The box body serves as the main support structure of the entire device and provides a stable fulcrum for the pulling rod. Lock the brake shoe mounting bracket with the box body 1 by rotating the small bolt 4. This step ensures the fixation between the box body and the shoe support, providing a solid foundation for subsequent pulling operations. Use tools such as wrenches to gradually tighten the large bolt 2. The large bolt 2 cooperates with the large nut 31. The linear static tension generated by its rotation causes the pulling rod 3 to apply continuous tension to the brake shoe chisel. Under the continuous tightening of the large bolt 2, the static tension generated by the pulling rod 3 gradually increases until the tightly plugged brake shoe chisel is gradually pulled out and the disassembly is completed. When the brake shoe chisel is successfully pulled out, stop tightening the large bolt 2 and remove the disassembly device. The design of the entire HXD2 locomotive brake shoe removal device meets the development requirements of improving efficiency and quality, reducing the labor intensity of operators and making brake shoe replacement on HXD2 locomotives less time-consuming and labor-intensive. This device, based on the screw-lift principle, effectively improves brake shoe replacement efficiency, ensuring safe and efficient railway transportation. Compared with traditional removal methods, it significantly reduces brake shoe removal time, enabling quick and efficient removal of the shoe shoe, improving locomotive maintenance efficiency.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A HXD2 type locomotive brake shoe removal device, characterized in that: It comprises a box body (1), a pull rod (3) is installed on the box body (1), a matching hole (6) is opened on the box body (1), and the pull rod (3) is installed through the upper end surface of the box body (1) through the matching hole (6); The upper end of the pull rod (3) is connected to a large bolt (2) via a large nut (31), and the end of the large bolt (2) abuts against the upper end surface of the box body (1); A plurality of small bolts (4) are arranged on both sides of the box body (1).

2. The HXD2 type locomotive brake shoe removal device according to claim 1, characterized in that: The number of the matching holes (6) on the box body (1) is two.

3. The HXD2 type locomotive brake shoe removal device according to claim 2, characterized in that: The pulling rod (3) comprises two side rods (33), an upper top plate (32) and a lower bottom plate (34), wherein the side rods (33) respectively pass through the matching holes (6), the lower ends of the side rods (33) are connected through the lower bottom plate (34), and the upper ends of the side rods (33) are connected through the upper top plate (32).

4. The HXD2 type locomotive brake shoe removal device according to claim 3, characterized in that: The side rod (33) of the pulling rod (3) and the matching hole (6) are clearance-fitted.

5. The HXD2 type locomotive brake shoe removal device according to claim 3, characterized in that: The large nut (31) is mounted inside the upper top plate (32).

6. The HXD2 type locomotive brake shoe removal device according to claim 1, characterized in that: A limiting block (11) is provided at the contact position between the upper end surface of the box body (1) and the large bolt (2).

7. The HXD2 type locomotive brake shoe removal device according to claim 1, characterized in that: A reinforcing rib plate (5) is installed inside the box (1).

8. The HXD2 type locomotive brake shoe removal device according to claim 1, characterized in that: A plurality of through holes (12) are arranged on the side of the box body (1).

9. The HXD2 type locomotive brake shoe removal device according to claim 8, characterized in that: A small nut (41) is fixed next to the through hole (12), and the small bolt (4) is installed on the side of the box body (1) through the small nut (41).

10. The HXD2 type locomotive brake shoe removal device according to claim 1, characterized in that: The bottom of the box (1) is open.

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