阅读说明：本技术 一种用于减速顶的密封盖 (Sealing cover for retarder ) 是由 周际 王志 王潜 赵连祥 王胜军 滕亮 于 2021-01-25 设计创作，主要内容包括：一种用于减速顶的密封盖,本发明涉及一种密封盖,本发明的目的是为了解决目前减速顶设备在工况恶劣,使用频率高,负荷强度大的环境时使用。使用中导致的维修、维护不到位,产生减速顶滑动油缸组合件内腔进水、结冰、液压油变质增多的情况,导致减速顶设备在工作时反力超限,给站场调车作业带来安全隐患的问题,它包括第一密封盖壳体、密封垫、底部堵塞、单向阀体和阀弹簧；底部堵塞安装在单向阀安装孔底部,单向阀体设置在底部堵塞上方,单向阀体顶在密封垫上。它包括第二密封盖壳体、爆破膜片和固定套；第二密封盖壳体为圆柱体,爆破膜片设置在爆破膜片安装孔底部,固定套安装在爆破膜片上方的爆破膜片安装孔处,本发明属于铁路减速顶领域。(The invention discloses a sealing cover for a retarder, relates to a sealing cover and aims to solve the problem that the existing retarder equipment is used in the environment with severe working condition, high use frequency and high load strength. The problems that the counter-force of the retarder equipment is over-limited during working and potential safety hazards are brought to the shunting operation of a station yard due to the fact that water inlet, icing and hydraulic oil deterioration increase in an inner cavity of a sliding oil cylinder assembly of the retarder are caused due to improper maintenance and improper use; the bottom plug is arranged at the bottom of the one-way valve mounting hole, the one-way valve body is arranged above the bottom plug, and the one-way valve body is propped against the sealing gasket. The device comprises a second sealing cover shell, a blasting diaphragm and a fixing sleeve; the invention belongs to the field of railway speed reducers, and discloses a railway speed reducer with a fixed sleeve.)

1. A sealed lid for retarber, its characterized in that: the sealing device comprises a first sealing cover shell (1), a sealing gasket (2), a bottom plug (3), a one-way valve body (4) and a valve spring (5); the first sealing cover shell (1) is a cylinder, a through hole is processed at the center of the first sealing cover shell (1) along the axial direction, two inner sealing ring annular mounting grooves are processed on the inner side wall of the through hole, two outer sealing ring annular mounting grooves are processed on the outer side wall, close to the top, of the first sealing cover shell (1), a one-way valve mounting hole and a first oil and gas discharge pore passage are vertically processed in the first sealing cover shell (1) from bottom to top, the one-way valve mounting hole and the first oil and gas discharge pore passage are arranged in a communicated mode, the diameter of the one-way valve mounting hole is larger than that of the first oil and gas discharge pore passage, a bottom plug (3) is mounted at the bottom of the one-way valve mounting hole, a one-way valve body (4) is arranged above the bottom plug (3), a valve spring (5) is arranged between the bottom plug (3) and the one, the one-way valve body (4) is pressed against the sealing gasket (2).

2. The seal cover for a retarder according to claim 1, wherein: the bottom blocks up (3) and is the cylinder, and bottom blocks up (3) top processing has the spacing arch, and processing has the external screw thread on the lateral wall that bottom blockked up (3), and bottom blocks up (3) and goes up to have the through-hole along vertical direction processing, sets up with check valve mounting hole bottom threaded connection.

3. The seal cover for a retarder according to claim 1, wherein: the one-way valve body (4) comprises a conical body and a cylinder, and the bottom of the conical body is integrally connected with the top of the cylinder.

4. The seal cover for a retarder according to claim 2 or 3, wherein: the valve spring (5) is sleeved on the cylinder of the one-way valve body (4), the top of the valve spring (5) is pressed against the lower surface of the conical body of the one-way valve body (4), the bottom end of the valve spring (5) is pressed against the bottom plug (3), and the valve spring (5) is sleeved on the limiting bulge of the bottom plug (3).

5. The seal cover for a retarder according to claim 3, wherein: the excircle surface of the conical body at the top of the one-way valve body (4) is propped against the through hole of the sealing gasket (2). The first oil gas discharge pore passage is sealed through the one-way valve body (4) and the sealing gasket (2).

6. A sealed lid for retarber, its characterized in that: the device comprises a second sealing cover shell (11), a blasting diaphragm (12) and a fixing sleeve (13); the sealed casing of second (11) is the cylinder, the center department of the sealed casing of second (11) has the through-hole along axial processing, the inside wall processing of through-hole has two inner seal ring annular mounting grooves, processing has two outer seal ring annular mounting grooves on the lateral wall that first sealed casing (1) is close to the top, sealed casing of second (11) has second oil gas discharge hole way and blasting diaphragm mounting hole by supreme processing down, second oil gas discharge hole way and blasting diaphragm mounting hole intercommunication set up, blasting diaphragm (12) set up in blasting diaphragm mounting hole bottom, fixed cover (13) are installed in the blasting diaphragm mounting hole department of blasting diaphragm (12) top, the diameter in second oil gas discharge hole way is less than the diameter of blasting diaphragm mounting hole.

7. The seal cover for a retarder according to claim 6, wherein: the blasting diaphragm (12) is a round metal sheet.

Technical Field

The invention relates to a sealing cover, in particular to a sealing cover for a retarder.

Background

The railway vehicle retarder is a speed regulating device widely used in domestic and foreign marshalling yards. The automatic control device can automatically control the vehicle sliding speed without external energy sources, and can be installed and used in straight sections, curve sections and turnout areas in a shunting yard. The speed regulation system of the retarder consists of retarder equipment with different functional characteristics, and the retarder can be applied to improve the hump marshalling capacity and control the speed of a hump sliding vehicle, so that the safe linkage and parking braking of the vehicle are realized, the damage accidents of the vehicle are greatly reduced, the automation of shunting operation is realized, the operation condition is greatly improved, the manual iron shoe operation is thrown away, the operators are liberated from the heavy and dangerous labor condition, and the personal injury accidents are thoroughly eliminated.

However, the existing retarder equipment is installed in a railway marshalling yard, works continuously all day long under outdoor environment, and has the disadvantages of bad working condition, high use frequency and high load intensity. The main technical parameters of the retarder include braking performance, critical speed and the like, and under the condition that other technical parameters are determined, the factor for determining the magnitude of the braking power is mainly vertical reaction force, and meanwhile, the magnitude of the vertical reaction force also influences the shunting operation safety. In daily use, the conditions of water inflow, icing, deterioration and increase of hydraulic oil in the inner cavity of the sliding oil cylinder assembly of the retarder can be caused due to improper maintenance and repair caused by various reasons, so that the counter force of the retarder equipment is over-limited during working, and potential safety hazards are brought to shunting operation of a station yard.

Disclosure of Invention

The invention aims to solve the problem that the existing retarder equipment is used in the environment with bad working condition, high use frequency and high load strength. The problems that the counter-force of the retarder equipment is over-limited during working and potential safety hazards are brought to yard shunting operation due to the fact that water enters the inner cavity of the sliding oil cylinder assembly of the retarder and is frozen and hydraulic oil is deteriorated and increased due to improper maintenance and improper use are caused, and accordingly the sealing cover for the retarder is provided.

The technical scheme adopted by the invention for solving the problems is as follows:

the sealing device comprises a first sealing cover shell, a sealing gasket, a bottom plug, a one-way valve body and a valve spring; first sealed lid casing is the cylinder, the center department of first sealed lid casing has the through-hole along axial processing, the inside wall processing of through-hole has two inner seal circle annular mounting grooves, processing has two outer seal circle annular mounting grooves on the lateral wall that first sealed lid casing is close to the top, first sealed lid casing has check valve mounting hole and first oil gas discharge pore by supreme vertical processing down, check valve mounting hole and first oil gas discharge pore intercommunication set up, the diameter of check valve mounting hole is greater than the diameter in first oil gas discharge pore, the bottom is blockked up and is installed in check valve mounting hole bottom, the check valve body sets up and blocks up the top in the bottom, and the check valve body sets up and is equipped with the valve spring between the bottom blocks up, sealed the pad sets up at check valve mounting hole top, the check valve body top is on sealed.

The device comprises a second sealing cover shell, a blasting diaphragm and a fixing sleeve; the sealed casing of second is the cylinder, the center department of the sealed casing of second has the through-hole along axial processing, the inside wall processing of through-hole has two inner seal ring annular mounting grooves, processing has two outer seal ring annular mounting grooves on the lateral wall that first sealed casing is close to the top, the sealed casing of second has second oil gas discharge pore and blasting diaphragm mounting hole by supreme processing down, second oil gas discharge pore and blasting diaphragm mounting hole intercommunication set up, the blasting diaphragm sets up in blasting diaphragm mounting hole bottom, fixed cover is installed in the blasting diaphragm mounting hole department of blasting diaphragm top, the diameter in second oil gas discharge pore is less than the diameter of blasting diaphragm mounting hole.

The invention has the beneficial effects that:

1. when the pressure of the inner cavity of the retarder equipment exceeds the design limit, the one-way valve body 4 or the blasting diaphragm 12 on the retarder sealing cover is opened, the pressure of the inner cavity of the retarder equipment is reduced to a safe value range, the safe use of the retarder equipment is ensured, and the safety guarantee is provided for railway shunting operation.

2. The sealing cover is simple in structure, stable and reliable in operation and low in cost.

3. The utility model provides a sealed lid of retarder and existing retarder equipment compatibility, existing retarder equipment upgrading transformation investment is little, the safe meaning is big.

Drawings

FIG. 1 is a front view of a first embodiment of the present invention.

Fig. 2 is a view from a-a in fig. 1.

Fig. 3 is an enlarged view at C in fig. 2.

Fig. 4 is a front view of a second structure of the present invention.

Fig. 5 is a view from B-B in fig. 4.

Fig. 6 is an enlarged view at D in fig. 5.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, and the sealing cover for the retarder according to the embodiment comprises a first sealing cover shell 1, a sealing gasket 2, a bottom plug 3, a one-way valve body 4 and a valve spring 5; first sealed lid casing 1 is the cylinder, the center department of first sealed lid casing 1 has the through-hole along axial processing, the inside wall processing of through-hole has two inner seal circle annular mounting grooves, processing has two outer seal circle annular mounting grooves on the lateral wall that first sealed lid casing 1 is close to the top, first sealed lid casing 1 has check valve mounting hole and first oil gas discharge pore by supreme vertical processing down, check valve mounting hole and first oil gas discharge pore intercommunication set up, the diameter of check valve mounting hole is greater than the diameter in first oil gas discharge pore, bottom plug 3 installs in check valve mounting hole bottom, check valve body 4 sets up and blocks up 3 tops in the bottom, and check valve body 4 sets up and is equipped with valve spring 5 between bottom plug 3, sealed pad 2 sets up at check valve mounting hole top, check valve body 4 tops are sealed on sealed pad 2. The sealing cover in the embodiment comprises a first sealing cover shell 1, a sealing gasket 2, a bottom plug 3, a one-way valve body 4 and a valve spring 5, and the structural design has the characteristic of repeated use, so that the maintenance cost of subsequent retarder equipment can be saved.

The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, and the sealing cover for the retarder according to the embodiment is characterized in that the bottom plug 3 is a cylinder, the top of the bottom plug 3 is provided with a limiting protrusion, the outer side wall of the bottom plug 3 is provided with an external thread, and the bottom plug 3 is provided with a through hole along the vertical direction and is in threaded connection with the bottom of the one-way valve mounting hole. The rest is the same as the first embodiment.

The third concrete implementation mode: in the embodiment described with reference to fig. 1 to 3, the one-way valve body 4 includes a conical body and a cylindrical body, and the bottom of the conical body is integrally connected with the top of the cylindrical body. The rest is the same as the second embodiment.

The fourth concrete implementation mode: referring to fig. 1 and 3, the sealing cover for the retarder according to the present embodiment is provided with a valve spring 5 sleeved on a cylinder of a one-way valve body 4, a top of the valve spring 5 abuts on a lower surface of a conical body of the one-way valve body 4, a bottom of the valve spring 5 abuts on a bottom plug 3, and the valve spring 5 is sleeved on a limiting protrusion of the bottom plug 3. The rest is the same as the second embodiment.

The fifth concrete implementation mode: referring to the embodiment described in conjunction with fig. 1-3, the sealing cover for the retarder according to the embodiment has the outer circular surface of the conical body at the top of the check valve body 4 against the through hole of the sealing pad 2. The first oil gas discharge hole channel is sealed through the check valve body 4 and the sealing gasket 2. The rest is the same as the fourth embodiment.

The sixth specific implementation mode: the embodiment is described with reference to fig. 4 to 6, and the sealing cover for the retarder according to the embodiment includes a second sealing cover housing 11, a burst disk 12 and a fixing sleeve 13; the casing 11 of second sealed lid is the cylinder, the center department of the casing 11 of second sealed lid has the through-hole along axial processing, the inside wall processing of through-hole has two inner seal ring annular mounting grooves, processing has two outer seal ring annular mounting grooves on the lateral wall that first sealed lid casing 1 is close to the top, the casing 11 of second sealed lid has second oil gas discharge pore and blasting diaphragm mounting hole by supreme processing down, second oil gas discharge pore and blasting diaphragm mounting hole intercommunication set up, blasting diaphragm 12 sets up in blasting diaphragm mounting hole bottom, fixed cover 13 is installed in the blasting diaphragm mounting hole department of blasting diaphragm 12 top, the diameter in second oil gas discharge pore is less than the diameter of blasting diaphragm mounting hole. The sealing cover in the embodiment comprises a second sealing cover shell 11, a blasting diaphragm 12 and a fixing sleeve 13, wherein the blasting diaphragm 12 needs to be replaced after the blasting diaphragm 12 is broken, and the sealing cover is simple in structure and relatively low in production cost.

The seventh embodiment: in the present embodiment, which is described with reference to fig. 4 to 6, the burst disk 12 is a circular metal sheet. The burst disk 12 is made of copper. The rest is the same as the seventh embodiment.

The specific implementation mode is eight: the embodiment will be described with reference to fig. 4 to 6, and the seal cover for a retarder according to the embodiment adjusts the safety pressure of the seal cover according to the axial length of the fixing sleeve 13, the inner diameter of the fixing sleeve 13, the outer diameter of the fixing sleeve 13, and the thickness of the burst disk 12. And thus the type of seal cover required for the retarder. At the same time, the safety pressure of the sealing cover can be adjusted according to the material of the blasting diaphragm 12. The rest is the same as the seventh embodiment.

Principle of operation

When the pressure of the inner cavity of the sliding oil cylinder of the retarder equipment is increased due to the conditions of water inflow, icing, oil deterioration and the like and exceeds the pressure limit designed by the sealing cover of the retarder, the one-way valve body 4 is opened or the explosion diaphragm 12 is broken, the redundant oil-gas mixture in the inner cavity of the sliding oil cylinder of the retarder can be discharged at the moment, and then the pressure of the inner cavity of the sliding oil cylinder of the retarder equipment is reduced, so that the safe use of the retarder equipment is ensured. In actual use, the appropriate structure can be selected according to the working capacity, climate, maintenance and repair conditions of the station yard.