Secondary vertical shock absorber for railway vehicle bogie

Abstract

The utility model discloses a secondary vertical shock absorber for a railway vehicle bogie, and relates to the field of shock absorbers, the secondary vertical shock absorber comprises a shock absorber outer tube and a shock absorber inner tube, the outer wall of the shock absorber outer tube is fixedly provided with a fixed cylinder, the inner wall of the fixed cylinder is provided with six groups of springs, the end parts of the springs are connected with a first tightening ring and a second tightening ring, and the first tightening ring and the second tightening ring are fixedly connected with the fixed cylinder. Cleaning sleeves are fixedly installed in the first tightening ring and the second tightening ring, the outer wall of the shock absorber inner pipe is sleeved with a cleaning ring, and a plurality of sets of fixing blocks are fixed to the outer wall of the cleaning ring. According to the secondary vertical shock absorber, the technical problem that the service life of the secondary vertical shock absorber is shortened due to the fact that excessive dust and stains are accumulated on the surface of the outer wall of the piston rod for a long time is solved, and in the process that the shock absorber inner pipe moves towards the interior of the shock absorber outer pipe, the dust and the stains accumulated on the surface of the outer wall of the shock absorber inner pipe are scraped by the cleaning ring; and then the cleaning sleeve cleans tiny dust on the outer wall of the inner pipe of the shock absorber through extrusion.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of damper, concretely is a two vertical damper for rail vehicle bogie. BACKGROUND

[0002] The two vertical damper is a device for controlling the vertical movement between the car body and the bogie, which is installed between the car body and the bogie. Its main function is to suppress the vibration of the vehicle in the vertical direction. During the operation of the rail vehicle, the two vertical damper is one of the key components of the bogie system. The vehicle will vibrate up and down during driving due to track irregularities and other factors, which not only affects the comfort of passengers, but also may cause damage to the structure and equipment of the vehicle.

[0003] The working principle of the two vertical damper is based on the damping mechanism inside the damper. When the vehicle produces vertical vibration, the piston rod of the damper will reciprocate relative to the cylinder. In this process, the oil inside the damper will generate damping force through specific orifice or valve system, which is opposite to the vibration direction, thereby consuming vibration energy and making the vibration of the vehicle decay rapidly.

[0004] During the mutual movement of the piston rod and the cylinder, friction occurs between the inner wall of the piston rod and the cylinder. Since the piston rod is exposed to the outside, the outer wall surface of the piston rod accumulates too much dust and stains for a long time, which increases the friction between the piston rod and the cylinder, causing the damping effect of the two vertical damper to decrease, and reducing the service life of the two vertical damper. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model aims to provide a two vertical damper for rail vehicle bogie to solve the technical problem of reducing the service life of the two vertical damper due to the accumulation of too much dust and stains on the outer wall surface of the piston rod for a long time.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a two vertical damper for rail vehicle bogie, comprising a damper outer tube and a damper inner tube, the outer wall of the damper outer tube is fixedly installed with a fixed cylinder, the inner wall of the fixed cylinder is provided with six groups of springs, the end of the spring is connected with a first tightening ring and a second tightening ring, the inside of the first tightening ring and the second tightening ring is fixedly installed with a cleaning sleeve, the outer wall of the damper inner tube is sleeved with a cleaning ring, the outer wall of the cleaning ring is fixedly provided with a plurality of fixed blocks, and the fixed block is fixedly connected at the bottom of the fixed cylinder.

[0007] By adopting the technical scheme, the technical problem that the service life of the secondary vertical shock absorber is reduced due to the long-time accumulation of too much dust and stains on the outer wall surface of the piston rod is solved, and in the moving process of the inner tube of the shock absorber to the inside of the outer tube of the shock absorber, the cleaning ring scrapes off the dust and stains accumulated on the outer wall surface of the inner tube of the shock absorber, and then the cleaning sleeve cleans the fine dust on the outer wall of the inner tube of the shock absorber through extrusion.

[0008] The utility model further sets up, the outer wall of fixed cylinder is fixed with connecting block, the one side of connecting block is equipped with baffle.

[0009] By adopting the technical scheme, the baffle can shield dust for the inner tube of the shock absorber, so that the stains accumulated on the surface of the inner tube of the shock absorber are reduced.

[0010] The utility model further sets up, the baffle is set to arc, and the baffle is mainly located at the one side of the inner tube of the shock absorber.

[0011] By adopting the technical scheme, the baffle is set to arc, and the opening angle of the baffle is 240 degrees, so that the baffle can shield rainwater and objects for the inner tube of the shock absorber, and blocky objects are prevented from impacting the inner tube of the shock absorber.

[0012] The utility model further sets up, the spring is always in compression state, and the end of every connected three groups of springs is connected with first tightening ring or second tightening ring.

[0013] By adopting the technical scheme, since the six groups of springs are always in compression state, the spring extrudes the first tightening ring and the second tightening ring, so that the cleaning sleeve is closely attached to the outer wall of the inner tube of the shock absorber.

[0014] The utility model further sets up, the bottom of cleaning ring is provided with sawtooth, and the cleaning ring is made of metal material.

[0015] By adopting the technical scheme, the cleaning ring with sawtooth can better hold some difficult-to-scrape stains on the outer wall of the inner tube of the shock absorber, and the stains are separated from the outer wall of the inner tube of the shock absorber through sawing action.

[0016] The utility model further sets up, the top of cleaning ring is arc-shaped, and the diameter of the cleaning ring is greater than the diameter of the inner tube of the shock absorber.

[0017] By adopting the technical scheme, when dust falls on the top of the cleaning ring, since the top of the cleaning ring is arc-shaped, the dust can fall along the arc-shaped outer wall of the cleaning ring, and the accumulation of dust on the top of the cleaning ring is reduced.

[0018] The utility model further sets up, the end of first tightening ring is provided with protrusion, and the end of second tightening ring is provided with groove.

[0019] By adopting the above technical scheme, since the outer wall of the inner tube of the damper is attached with stains, the cleaning sleeve will be deformed, when the cleaning sleeve is deformed, the separated first tightening ring and the second tightening ring, that is, the protrusion at the end of the first tightening ring is separated from the groove at the end of the second tightening ring.

[0020] The cleaning sleeve is further provided as thick in the middle and thin at both ends, and has a certain elasticity.

[0021] By adopting the above technical scheme, the thickness difference between the middle and the end of the cleaning sleeve is small, facilitating the extrusion of the cleaning sleeve by the first tightening ring and the second tightening ring.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] The utility model discloses a piston rod cleaning device, which comprises a damper outer tube, a damper inner tube, a fixing cylinder, a spring, a first tightening ring, a cleaning ring and a cleaning sleeve.

[0024] The utility model discloses a piston rod cleaning device, which comprises a damper outer tube, a damper inner tube, a fixing cylinder, a spring, a first tightening ring, a cleaning ring and a cleaning sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the device whole schematic diagram of the utility model;

[0026] Figure 2 It is the damper inner tube of the utility model and view;

[0027] Figure 3 It is the inside schematic diagram of the fixing cylinder of the utility model;

[0028] Figure 4 It is the cleaning ring whole structure diagram of the utility model;

[0029] Figure 5 It is the first tightening ring whole structure diagram of the utility model.

[0030] In the diagram: 1. Outer tube of shock absorber; 2. Inner tube of shock absorber; 3. Fixing cylinder; 4. Connecting block; 401. Baffle; 5. Cleaning ring; 501. Fixing block; 502. Serration; 6. First tightening ring; 601. Second tightening ring; 602. Groove; 603. Protrusion; 604. Cleaning sleeve; 7. Spring. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] The embodiments of this utility model will be described below based on its overall structure.

[0033] A secondary vertical damper for a railway vehicle bogie, such as Figure 1 - Figure 5 As shown, the device includes an outer tube 1 and an inner tube 2. A fixed cylinder 3 is fixedly installed on the outer wall of the outer tube 1. Six sets of springs 7 are provided on the inner wall of the fixed cylinder 3. The ends of the springs 7 are connected to a first tightening ring 6 and a second tightening ring 601. A cleaning sleeve 604 is fixedly installed inside the first tightening ring 6 and the second tightening ring 601. A cleaning ring 5 is fitted on the outer wall of the inner tube 2. Multiple sets of fixing blocks 501 are fixed on the outer wall of the cleaning ring 5. The fixing blocks 501 are fixedly connected to the bottom of the fixed cylinder 3. This device solves the technical problem that the service life of the secondary vertical shock absorber is reduced due to the accumulation of too much dust and dirt on the outer wall surface of the piston rod over a long period of time. During the process of the inner tube 2 moving into the outer tube 1, the cleaning ring 5 scrapes off the dust and dirt accumulated on the outer wall surface of the inner tube 2. Then, the cleaning sleeve 604 cleans the fine dust on the outer wall of the inner tube 2 by squeezing.

[0034] Please see Figure 1 A connecting block 4 is fixed to the outer wall of the fixed cylinder 3. A baffle 401 is installed on one side of the connecting block 4. The baffle 2 can shield the inner tube 2 of the shock absorber from dust, thereby reducing the dirt accumulated on the surface of the inner tube 2 of the shock absorber.

[0035] Please see Figure 1 The baffle 401 is set in an arc shape and is mainly located on one side of the inner tube 2 of the shock absorber. The baffle 401 is set in an arc shape and the opening angle of the baffle 401 is 240 degrees. The baffle 401 can shield the inner tube 2 of the shock absorber from rain and objects, and prevent blocky objects from hitting the inner tube 2 of the shock absorber.

[0036] Please see Figure 3, the spring 7 is always in compression, and the end of each group of three springs 7 is connected with the first tightening ring 6 or the second tightening ring 601, because the six groups of springs 7 are always in compression, the spring 7 extrudes the first tightening ring 6 and the second tightening ring 601, so that the cleaning sleeve 604 is tightly attached to the outer wall of the inner tube 2 of the shock absorber.

[0037] Please refer to Figure 4 , the bottom of the cleaning ring 5 is provided with a sawtooth 502, and the cleaning ring 5 is made of metal material, and the cleaning ring 5 with the sawtooth 502 can better hold some difficult-to-scrape dirt on the outer wall of the shock absorber inner tube 2, and separate the dirt from the outer wall of the shock absorber inner tube 2 through the sawing action.

[0038] Please refer to Figure 4 , the top of the cleaning ring 5 is arc-shaped, and the diameter of the cleaning ring 5 is greater than the diameter of the shock absorber inner tube 2, when the dust falls on the top of the cleaning ring 5, because the top of the cleaning ring 5 is arc-shaped, the dust can fall along the arc-shaped outer wall of the cleaning ring 5, reducing the accumulation of dust on the top of the cleaning ring 5.

[0039] Please refer to Figure 5 , the end of the first tightening ring 6 is provided with a protrusion 603, and the end of the second tightening ring 601 is provided with a groove 602, because the outer wall of the shock absorber inner tube 2 is attached with dirt, causing the cleaning sleeve 604 to deform, when the cleaning sleeve 604 deforms, the closed first tightening ring 6 and the second tightening ring 601 are separated, that is, the protrusion 603 at the end of the first tightening ring 6 is separated from the groove 602 at the end of the second tightening ring 601.

[0040] Please refer to Figure 3 and Figure 5 , the cleaning sleeve 604 is provided with a thick middle and thin ends, and the cleaning sleeve 604 has a certain elasticity, the difference between the middle thickness and the end thickness of the cleaning sleeve 604 is small, facilitating the extrusion of the cleaning sleeve 604 by the first tightening ring 6 and the second tightening ring 601.

[0041] The utility model discloses a working principle is: the outer wall fixed mounting of shock absorber outer tube 1 has fixed cylinder 3, the outer wall of fixed cylinder 3 is connected with baffle 401 through connecting block 4, baffle 401 is set to arc, and the opening angle of baffle 401 is 240 degrees, and baffle 401 can shelter rainwater and object for shock absorber inner tube 2, avoid massive object to hit shock absorber inner tube 2, and baffle 2 can also make the dirt gathered on the surface of shock absorber inner tube 2 reduce, in addition, fixed cylinder 3 internally fixed mounting has six groups of spring 7, and the end of every three groups of adjacent spring 7 is connected with first tightening ring 6 and second tightening ring 601, and the inner wall of first tightening ring 6 and second tightening ring 601 is fixed with cleaning sleeve 604, and six groups of spring 7 are always in compression state, and spring 7 extrudes first tightening ring 6 and second tightening ring 601, so that cleaning sleeve 604 is closely attached on the outer wall of shock absorber inner tube 2, when shock absorber outer tube 1 and shock absorber inner tube 2 occur relative motion, fixed cylinder 3 bottom is equipped with cleaning ring 5, and cleaning ring 5 is made of metal material, in the process that shock absorber inner tube 2 moves to the inside of shock absorber outer tube 1, cleaning ring 5 scrapes off the dirt and dirt accumulated on the surface of shock absorber inner tube 2 outer wall, and then cleaning sleeve 604 cleans the fine dust on the outer wall of shock absorber inner tube 2 through extrusion.

[0042] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiment without creative contribution after reading the specification, but as long as in the range of the utility model's claims, it is protected by the patent law.

Claims

1. A secondary vertical damper for a railway vehicle bogie, comprising a damper outer tube (1) and a damper inner tube (2), characterized in that: The outer wall of the shock absorber outer tube (1) is fixedly provided with a fixing cylinder (3), the inner wall of the fixing cylinder (3) is provided with six groups of springs (7), the end of the spring (7) is connected with a first tightening ring (6) and a second tightening ring (601), the inside of the first tightening ring (6) and the second tightening ring (601) is fixedly provided with a cleaning sleeve (604), the outer wall of the shock absorber inner tube (2) is sleeved with a cleaning ring (5), the outer wall of the cleaning ring (5) is fixedly provided with a plurality of fixing blocks (501), and the fixing block (501) is fixedly connected to the bottom of the fixing cylinder (3).

2. The secondary vertical damper for a railway vehicle bogie according to claim 1, characterized in that: The outer wall of the fixing cylinder (3) is fixedly provided with a connecting block (4), one side of the connecting block (4) is provided with a baffle (401).

3. The secondary vertical damper for a railway vehicle bogie according to claim 2, characterized in that: The baffle (401) is arranged in an arc shape, and the baffle (401) is mainly located on one side of the shock absorber inner tube (2).

4. The secondary vertical damper for a railway vehicle bogie according to claim 1, characterized in that: The spring (7) is always in a compressed state, and the end of each three groups of springs (7) is connected with the first tightening ring (6) or the second tightening ring (601).

5. The secondary vertical damper for a railway vehicle bogie according to claim 1, characterized in that: The bottom of the cleaning ring (5) is provided with a sawtooth (502), and the cleaning ring (5) is made of metal material.

6. The secondary vertical damper for a railway vehicle bogie according to claim 1, characterized in that: The top of the cleaning ring (5) is arranged in an arc shape, and the diameter of the cleaning ring (5) is greater than the diameter of the shock absorber inner tube (2).

7. The secondary vertical damper for a railway vehicle bogie according to claim 1, characterized in that: The end of the first tightening ring (6) is provided with a protrusion (603), and the end of the second tightening ring (601) is provided with a groove (602).

8. The secondary vertical damper for a railway vehicle bogie according to claim 1, characterized in that: The cleaning sleeve (604) is arranged to be thick in the middle and thin at both ends, and the cleaning sleeve (604) has a certain elasticity.

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