A detachable shock absorber dust cover for a motor train unit

Abstract

The utility model relates to the field of shock absorber dust cover, specifically relates to a prevent the shock absorber dust cover for motor train unit of unhooking, including the cover shell, both ends of cover shell all are fixedly connected with the connecting sleeve, fixed mechanism, the fixed mechanism includes the snap ring, the snap ring fixedly connected in the outer wall of connecting sleeve, the snap ring inner wall penetrates and has the pull rod of sliding connection, the inner wall radial sliding of snap ring is connected with the clamping plate, the fixed mechanism still includes the shaft ring for with outside shock absorber cooperation, the outer circumferential surface of shaft ring has set up the clamping groove that clamping plate inserts. Through the design of fixed mechanism, can adopt the mode of jointing to fix together with the shell cover and shock absorber, compared with traditional thread connection, jointing not only can realize the quick disassembly of shell cover, to facilitate the maintenance of shock absorber subsequently, and is not easy to be affected by high frequency vibration, thereby can effectively avoid the situation of cover shell falling off, makes the shell cover can give full play to the dustproof protection function.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber dust covers, specifically to a shock absorber dust cover for high-speed trains that can prevent detachment. Background Technology

[0002] The dust cover for the shock absorber of the EMU is a key protective component to ensure the long-term stable operation of the shock absorber. It is mainly installed on the outside of the EMU shock absorber and can effectively prevent dust, mud, rainwater and other debris from the track from entering the shock absorber and avoid problems such as wear, corrosion or jamming of internal parts due to impurities.

[0003] As a core component for maintaining stable train operation and mitigating track impact, the shock absorber of a high-speed train must be inspected regularly to promptly identify potential faults. To facilitate quick disassembly of the dust cover during maintenance, most high-speed train shock absorber dust covers on the market currently use a threaded connection between the threaded sleeve and the cover plate on the shock absorber. This connection structure is simple to operate and can be completed without complicated tools, greatly improving maintenance efficiency and providing convenience for the regular maintenance of the shock absorber.

[0004] Although the threaded sleeve and cover plate connection method can secure the dust cover and offers the advantage of convenient assembly and disassembly, during high-speed train operation, the train is continuously subjected to high-frequency and continuous vibrations due to various factors such as track irregularities and bogie vibrations. This vibration constantly acts on the threaded connection, easily leading to loosening of the threads. With increasing operating time, this loosening may gradually worsen, and in severe cases, it may even cause the entire dust cover to detach, leaving the shock absorber without effective protection and highly susceptible to external impurities, threatening the operational safety of the high-speed train. Therefore, it is necessary to invent a non-detachable dust cover for high-speed train shock absorbers to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a dust cover for a shock absorber used in high-speed trains that can prevent detachment. Through the design of a retaining ring and a collar, the cover can be quickly connected to the shock absorber, thus improving the ease of installation. Simultaneously, the retaining plate and slot can fix the retaining ring to the outer wall of the collar, thereby securing the cover. Furthermore, by pulling the retaining plate with a pull rod, it can be moved out of the slot, enabling quick disassembly of the cover for convenient maintenance of the shock absorber. The elasticity of the spring ensures that the engagement between the slot and the retaining plate is not easily affected by vibration, thus preventing the cover from detaching. This solves the problem of dust covers detaching due to high-frequency vibrations of high-speed trains in traditional threaded connections.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dust cover for a shock absorber used in high-speed trains that can prevent detachment, comprising: A housing, wherein both the upper end and the lower end of the housing are fixedly connected with connecting sleeves; a fixing mechanism, wherein the fixing mechanism comprises a clamping ring, the clamping ring is fixedly connected to the outer wall of the connecting sleeve, a pull rod penetrates through and is slidably connected to the inner wall of the clamping ring, and a clamping plate is radially slidably connected to the inner wall of the clamping ring; the fixing mechanism further comprises a shaft collar for cooperating with an external shock absorber, a clamping groove for inserting the clamping plate is formed on the outer circumferential surface of the shaft collar, a spring is sleeved on the outer wall of the pull rod, one end of the spring is fixedly connected to the outer wall of the clamping plate, and the other end of the spring is fixedly connected to the inner wall of the clamping ring.

[0007] Preferably, an annular groove is formed on the inner wall of the clamping ring, and a sealing ring is clamped on the inner wall of the annular groove.

[0008] Preferably, a sealing groove matching with the sealing ring is formed on the outer circumferential surface of the shaft collar, and the sealing ring clamped inside the sealing ring can seal the joint between the shaft collar and the shaft collar.

[0009] Preferably, the pull rod is in a C-shaped rod-shaped structure, and the rod end of the pull rod is fixedly connected with the outer wall of the clamping plate.

[0010] Preferably, the clamping groove is in a circular annular groove structure, the clamping plate is in a circular arc plate-shaped structure, and the radius of the inner arc surface of the clamping plate is equal to the radius of the inner wall of the clamping groove.

[0011] Preferably, the shaft collar is an annular structure with a central opening, and the diameter of the central hole of the shaft collar at the top of the housing is smaller than that of the shaft collar at the bottom of the housing.

[0012] In the above technical solutions, the technical effects and advantages provided by the present utility model are: The present utility model, through the design of the fixing mechanism, can fix the housing and the shock absorber together by means of clamping. Compared with the traditional threaded connection, clamping can not only realize rapid disassembly and assembly of the housing for subsequent maintenance of the shock absorber, but also is not easily affected by high-frequency vibration, thereby effectively avoiding the falling-off of the housing, and enabling the housing to fully exert its dust-proof and protective effect; and through the cooperation of the annular groove, the sealing ring and the sealing groove, the joint between the clamping ring and the shaft collar can be sealed, so that impurities such as water, dust, sand and stone can be prevented from entering the interior of the housing, and the shock absorber can be effectively protected. Description of Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in the present invention, and those skilled in the art can obtain other accompanying drawings according to these accompanying drawings without creative efforts.

[0014] Figure 1This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a cross-sectional structural diagram of the retaining ring and collar of this utility model; Figure 4 This utility model Figure 2 A magnified structural diagram at point A; Figure 5 This is a schematic diagram of the connection between the cover and the shock absorber of this utility model.

[0015] Legend: 1. Cover; 2. Connecting sleeve; 3. Fixing mechanism; 31. Snap ring; 32. Pull rod; 33. Clamping plate; 34. Shaft collar; 35. Snap groove; 36. Spring; 4. Annular groove; 5. Sealing ring; 6. Sealing groove. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1 - Figure 5 The dust cover for a shock absorber used in a high-speed train, shown as being detachable, includes a cover 1 and a fixing mechanism 3. Cover 1, with connecting sleeves 2 fixedly connected to both the upper and lower ends of cover 1. Cover 1 is a plastic corrugated pipe. Connecting sleeves 2, retaining rings 31 and collars 34 are all made of metal. The connection between retaining rings 31 and cover 1 can be achieved through connecting sleeves 2. The fixing mechanism 3 includes a retaining ring 31, which is fixedly connected to the outer wall of the connecting sleeve 2. A pull rod 32 is slidably connected through the inner wall of the retaining ring 31. A retaining plate 33 is radially slidably connected to the inner wall of the retaining ring 31. The retaining plate 33 can be slid on the inner wall of the retaining ring 31 by driving the pull rod 32. The fixing mechanism 3 also includes a collar 34 for cooperating with an external shock absorber. The outer circumferential surface of the collar 34 is provided with a slot 35 for inserting a retaining plate 33. By inserting the retaining plate 33 into the slot 35, the retaining ring 31 and the collar 34 can be fixed together, and the retaining ring 31 and the collar 34 can be quickly disassembled. A spring 36 is fitted on the outer wall of the pull rod 32. The spring 36 is made of high carbon chromium bearing steel. After heat treatment, its tensile strength, fatigue limit and vibration resistance are greatly improved, so that it can adapt to the high-frequency vibration environment of the shock absorber. One end of the spring 36 is fixedly connected to the outer wall of the clamping plate 33, and the other end of the spring 36 is fixedly connected to the inner wall of the retaining ring 31. When the pull rod 32 is released, the previously compressed spring 36 will push the clamping plate 33, so that the clamping plate 33 slides back to its original position on the inner wall of the retaining ring 31.

[0018] As Figure 4 shown, an annular groove 4 is provided on an inner wall of the retainer ring 31, a sealing ring 5 is clamped to an inner wall of the annular groove 4, the sealing ring 5 is filled inside the annular groove 4 through its elastic deformation to achieve clamping connection with the annular groove 4, after the sealing ring 5 ages and fails, the sealing ring 5 can be taken out from the inside of the annular groove 4 for replacement, a sealing groove 6 matching the sealing ring 5 is provided on an outer circumferential surface of the shaft collar 34, the sealing ring 5 clamped inside the sealing groove 6 can seal the connecting position between the shaft collar 34 and the shaft collar 34, filling a gap between the annular groove 4 and the sealing groove 6 by using the elastic deformation of the sealing ring 5 can seal the connecting position between the retainer ring 31 and the shaft collar 34.

[0019] As Figure 3 shown, the pull rod 31 is an C-shaped rod-shaped structure, a rod end of the pull rod 32 is fixedly connected with an outer wall of the clamping plate 33, pulling the pull rod 32 can drive the clamping plate 33 to slide on the inner wall of the retainer ring 31 and gradually compress the spring 36, so as to drive the clamping plate 33 to move out from the inside of the clamping groove 35.

[0020] As Figure 4 shown, the clamping groove 35 is an annular groove structure, the clamping plate 33 is a circular arc-shaped plate structure, a radius of an inner arc surface of the clamping plate 33 is equal to a radius of an inner wall of the clamping groove 35, after the clamping plate 33 is inserted into the inside of the clamping groove 35, the clamping plate 33 cooperating with the clamping groove 35 can limit the position of the retainer ring 31, so that the retainer ring 31 is fixed on the outer wall of the shaft collar 34.

[0021] As Figure 2 shown, the shaft collar 34 is an annular structure with a central opening, the diameter of the central hole of the shaft collar 34 at the top of the housing 1 is smaller than the diameter of the central hole of the shaft collar 34 at the bottom of the housing 1, the shaft collar 34 with a larger central hole at the bottom of the housing 1 is used for being welded to an outer wall of a shock absorber cylinder, and the shaft collar 34 with a relatively smaller central hole at the top of the housing 1 is used for being welded to an outer wall of a shock absorber piston rod.

[0022] The working principle of the present utility model is as follows: when the housing 1 needs to be installed, first sleeve the housing 1 on the outer wall of the shock absorber, make the shaft collar 34 with a larger central hole at the bottom of the housing sleeve on the outer wall of the shock absorber cylinder, make the shaft collar 34 with a relatively smaller central hole at the top of the housing sleeve on the outer wall of the shock absorber piston rod, then fix the two sets of shaft collars 34 on the outer walls of the cylinder and the piston rod of the shock absorber respectively by welding, so far, the installation of the housing 1 is completed, and the housing 1 can be used for dust protection of the connecting position between the cylinder and the piston rod.

[0023] When it is necessary to disassemble the cover 1 to maintain the shock absorber, by pulling the lever 32, the clamping plate 33 is moved to slide on the inner wall of the retaining ring 31 and gradually compress the spring 36. At this time, the clamping plate 33 will gradually move out of the inside of the retaining groove 35. When the clamping plate 33 is completely moved out of the inside of the retaining groove 35, the clamping plate 33 will release the limit on the retaining ring 31. At this time, the retaining ring 31 can be separated from the shaft collar 34, so that the cover 1 can be removed from the outside of the shock absorber for maintenance.

[0024] When the shock absorber is repaired and the housing 1 needs to be installed, first, place the housing 1 on the outer wall of the shock absorber, then pull the lever 32 to make the retaining plate 33 slide completely into the inside of the retaining ring 31 and gradually compress the spring 36. Then press the retaining ring 31 so that it is placed on the outer wall of the shaft ring 34 and flush with the shaft ring 34. At this time, the lever 32 can be released. The previously compressed spring 36 will push the retaining plate 33, so that the retaining plate 33 slides back to its original position on the inner wall of the retaining ring 31. At the same time, the retaining plate 33 will be inserted into the inside of the retaining groove 35. At this time, the retaining plate 33 and the retaining groove 35 can be used to limit the retaining ring 31 and fix the retaining ring 31 to the outer wall of the shaft ring 34. Through the above operation, the retaining rings 31 at both ends of the housing 1 are respectively engaged with the shaft rings 34 on the outer wall of the cylinder and piston rod. Thus, the installation of the housing 1 is completed.

[0025] When the retaining ring 31 is pressed so that it fits onto the outer wall of the shaft ring 34 and is flush with the shaft ring 34, the retaining ring 31 will drive the sealing ring 5, which is engaged with the inner wall of the annular groove 4, into the interior of the sealing groove 6. At this time, the elastic deformation of the sealing ring 5 is used to fill the annular groove 4 and the sealing groove 6 to seal the connection between the retaining ring 31 and the shaft ring 34, thereby preventing water, dust, sand and other impurities from entering the interior of the housing 1, so that the shock absorber can be effectively protected.

[0026] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A dust cover for a shock absorber used in high-speed trains that can prevent detachment, characterized in that, Comprising: a housing (1), wherein both the upper end and the lower end of the housing (1) are fixedly connected with connecting sleeves (2); a fixing mechanism (3), wherein the fixing mechanism (3) comprises a clamping ring (31), the clamping ring (31) is fixedly connected to the outer wall of the connecting sleeve (2), a pull rod (32) penetrates through and is slidably connected to the inner wall of the clamping ring (31), and a clamping plate (33) is radially slidably connected to the inner wall of the clamping ring (31); the fixing mechanism (3) further comprises a shaft collar (34) for matching with an external shock absorber, an outer circumferential surface of the shaft collar (34) is provided with a clamping slot (35) for the insertion of the clamping plate (33), a spring (36) is sleeved on the outer wall of the pull rod (32), one end of the spring (36) is fixedly connected to the outer wall of the clamping plate (33), and the other end of the spring (36) is fixedly connected to the inner wall of the clamping ring (31).

2. The dust cover for a shock absorber used in a high-speed train that can prevent detachment, as described in claim 1, is characterized in that: an annular groove (4) is formed in the inner wall of the clamping ring (31), and a sealing ring (5) is clamped on the inner wall of the annular groove (4).

3. The dust cover for a shock absorber of a high-speed train that can prevent detachment according to claim 1, characterized in that: a sealing groove (6) matched with the sealing ring (5) is formed in the outer circumferential surface of the shaft collar (34), and the sealing ring (5) clamped inside the sealing groove (6) can seal the joint between the shaft collars (34).

4. A dust cover for a shock absorber used in a high-speed train that can prevent detachment, as described in claim 1, is characterized in that: the pull rod (32) is of a U-shaped rod structure, and the rod end of the pull rod (32) is fixedly connected with the outer wall of the clamping plate (33).

5. A dust cover for a shock absorber used in high-speed trains that can prevent detachment, as described in claim 1, characterized in that: the clamping slot (35) is of a circular annular groove structure, the clamping plate (33) is of a circular arc plate structure, and the radius of the inner arc surface of the clamping plate (33) is equal to the radius of the inner wall of the clamping slot (35).

6. A dust cover for a shock absorber of a high-speed train that can prevent detachment, as described in claim 1, is characterized in that: the shaft collar (34) is of an annular structure with a central opening, and the diameter of the central hole of the shaft collar (34) at the top of the housing (1) is smaller than that of the shaft collar (34) at the bottom of the housing (1).

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