CN110001706B - Freight train retarder based on ball screw mechanism - Google Patents
Freight train retarder based on ball screw mechanism Download PDFInfo
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- CN110001706B CN110001706B CN201910396773.9A CN201910396773A CN110001706B CN 110001706 B CN110001706 B CN 110001706B CN 201910396773 A CN201910396773 A CN 201910396773A CN 110001706 B CN110001706 B CN 110001706B
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- ball screw
- nut
- ball
- freight train
- fixing device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/02—Track brakes or retarding apparatus
- B61K7/04—Track brakes or retarding apparatus with clamping action
- B61K7/06—Track brakes or retarding apparatus with clamping action operated mechanically
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The application belongs to the field of retarder, and particularly relates to a freight train retarder based on a ball screw mechanism. Aiming at the problems of reduction performance reduction and environmental pollution of a retarder caused by oil leakage of the retarder in the prior art, the application provides a freight train retarder based on a ball screw mechanism, which adopts the following technical scheme: including top (1) and base (6), still include ball (2), the cooperation is provided with nut (5) on ball (2), top (1) and nut (5) fixed connection, and base (6) inboard is connected with fixing device, and ball (2) lower part and fixing device rotate to be connected, and the cover has spring (7) on ball (2), spring (7) are located between nut (5) and the fixing device. The application is suitable for decelerating the freight train.
Description
Technical Field
The application belongs to the field of retarder, and particularly relates to a freight train retarder based on a ball screw mechanism.
Background
The retarder in the prior art is a speed regulating device which is internally provided with hydraulic oil and is arranged on the inner side or the outer side of a steel rail, and the hydraulic oil in the interior is extruded through a sliding oil cylinder and wheels so as to apply braking work to the wheel set of the vehicle to play a role in speed regulation. The working principle is as follows:
when the vehicle passes through the retarder, the running speed of the wheel set is lower than the critical speed set by the retarder, at the moment, the upper cavity and the lower cavity of the sliding oil cylinder cannot generate larger pressure difference, then the speed valve is in a state of being always opened, oil in the upper cavity of the sliding oil cylinder flows to the lower cavity through the speed valve channel, because the upper cavity of the sliding oil cylinder is larger than the lower cavity, the oil cannot fully enter the lower cavity, and the redundant oil can compress nitrogen. However, because the resistance generated by the oil passing through the speed valve is small, the retarder does not basically play a role in decelerating the vehicle; when the vehicle passes through the retarder, the running speed of the wheel set is higher than the critical speed set by the retarder, at the moment, the sliding oil cylinder can slide downwards quickly, the upper cavity and the lower cavity can generate great pressure difference, the speed valve can be quickly closed due to the overlarge pressure of the upper cavity, then the pressure valve can be opened, oil enters the lower cavity through the pressure valve, and the retarder applies braking work due to the great pressure difference generated by the upper cavity and the lower cavity, so that the vehicle is decelerated.
However, as the service life of the retarder increases, the sealing ring is aged, oil is easy to leak, the speed reducing performance of the retarder is greatly reduced, potential safety hazards exist, the environment is polluted after the oil leaks, and a large amount of manpower is required for cleaning.
Disclosure of Invention
Aiming at the problems of reduction performance reduction and environmental pollution of the retarder caused by oil leakage of the retarder in the prior art, the application provides a freight train retarder based on a ball screw mechanism, which aims at: solves the problems of reduction of the speed reducing performance of the retarder and environmental pollution caused by oil leakage of the retarder.
The technical scheme adopted by the application is as follows:
the utility model provides a freight train retarder based on ball mechanism, includes top and base, still includes ball, the last cooperation of ball is provided with the nut, top and nut fixed connection, and the base inboard is connected with fixing device, and ball lower part and fixing device rotate to be connected, and the cover has the spring on the ball, the spring is located between nut and the fixing device.
After the technical scheme is adopted, because hydraulic pressure and a piston are not used for transmission, the risk of oil leakage does not exist, the potential safety hazard caused by the oil leakage is eliminated, the environment is not polluted, and the cost for treating pollutants is saved.
Preferably, a nut anti-drop pin is arranged at the top of the ball screw.
After the technical scheme is adopted, the nut can be prevented from slipping from the top end of the ball screw.
Preferably, the upper end of the nut is connected with a nut top connector, the cross section of the nut top connector is L-shaped, and the nut top connector is fixedly connected with the top.
After the technical scheme is adopted, the contact area between the top and the nut is increased, the stress is more uniform, and the concentrated load borne by the nut can be reduced.
Preferably, the lower end of the ball screw is connected with a transmission shaft through a coupler, and the transmission shaft is rotationally connected with the fixing device.
After the technical scheme is adopted, vibration between the ball screw and the fixing device can be reduced, impact peak load is reduced, and the coupler also has a certain buffering effect and prevents the device from being damaged.
Preferably, the fixing device comprises a force-unloading lower cover, an end face bearing is arranged in the force-unloading lower cover, and the ball screw is connected with the end face bearing.
After the technical scheme is adopted, the contact area between the ball screw and the base is increased, concentrated load borne by the base is converted into uniform load, the device is not easy to damage, the failure rate is reduced, and the service life of the device is prolonged.
Preferably, the fixing device further comprises a force-unloading upper cover, the force-unloading upper cover is fixedly connected with the force-unloading lower cover, and a hole for the ball screw to pass through is formed in the force-unloading upper cover.
After the technical scheme is adopted, the position of the end face bearing is more stable, and the stability of the device is improved.
Preferably, the ball screw is in interference connection with the inner side of the end face bearing.
After the technical scheme is adopted, the connecting structure between the ball screw and the end face bearing is simpler, the centering precision is good, the load compounded by torque and axial force or both can be borne, the bearing capacity is high, and the ball screw can reliably work under impact vibration load.
Preferably, the outer side of the end face bearing is in interference connection with the force-unloading lower cover.
After the technical scheme is adopted, the connecting structure between the end face bearing and the unloading lower cover is simpler, the centering precision is good, the load compounded by torque and axial force or both can be borne, the bearing capacity is high, and the reliable work can be realized under the impact vibration load.
In summary, due to the adoption of the technical scheme, the beneficial effects of the application are as follows:
1. the ball screw is adopted as the speed reducing device, and hydraulic pressure and a piston are not used for transmission, so that the risk of oil leakage does not exist, the potential safety hazard caused by the oil leakage is eliminated, the environment is not polluted, and the cost for treating pollutants is saved.
2. The nut anti-slip pin is arranged at the upper end of the ball screw, so that the nut can be prevented from slipping from the top end of the ball screw.
3. The nut top connector is arranged, the contact area between the top and the nut is increased, the stress is more uniform, and the concentrated load received by the nut can be reduced.
4. The coupling and the transmission shaft are arranged between the ball screw and the fixing device, so that vibration between the ball screw and the fixing device can be reduced, impact peak load is reduced, and the coupling also has a certain buffering effect, so that the device is prevented from being damaged.
5. The base is provided with the unloading lower cover, the unloading lower cover is provided with the end face bearing, the contact area between the ball screw and the base is increased, the concentrated load borne by the base is converted into uniform load, the device is not easy to damage, the failure rate is reduced, and the service life of the device is prolonged.
6. The force unloading lower cover is fixedly connected with the force unloading upper cover, so that the position of the end face bearing is more stable, and the stability of the device is improved.
7. The ball screw is in interference connection with the inner ring of the end face bearing, the connecting structure between the ball screw and the end face bearing is simpler, the centering precision is good, the load compounded by torque and axial force can be borne, the bearing capacity is high, and the ball screw can reliably work under impact vibration load.
8. The end face bearing is in interference connection with the force-unloading lower cover, the connecting structure is simpler, the centering precision is good, the load compounded by torque and axial force or both can be borne, the bearing capacity is high, and the end face bearing can reliably work under impact vibration load.
Drawings
The application will now be described by way of example and with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of the external structure of the present application;
FIG. 2 is a front view of the present application;
fig. 3 is a schematic view of the internal structure of the present application.
The device comprises a 1-top, a 2-lead screw, a 3-nut top connector, a 4-nut anti-drop pin, a 5-nut, a 6-base, a 7-spring, an 8-force-unloading upper cover, a 9-transmission shaft, a 10-end face bearing, an 11-force-unloading lower cover, a 12-bolt and a 13-fixing frame.
Detailed Description
All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.
The present application will be described in detail with reference to fig. 1 to 3.
A freight train retarder based on a ball screw mechanism comprises a top 1 and a base 6, wherein a hollow cavity is formed in the base 6, and the top of the hollow cavity is opened. The roof 1 is disposed in the opening and is capable of sliding up and down in the opening. Still include ball 2, the cooperation is provided with nut 5 on the ball 2, top 1 and nut 5 fixed connection, and the inboard of the cavity chamber of seting up in the base 6 is connected with fixing device, and ball 2 lower part and fixing device rotate to be connected, and the cover has spring 7 on the ball 2, spring 7 is located between nut 5 and the fixing device. When the train is pressed on the top 1, the top 1 pushes the nut 5 to move downwards, the vertical movement of the nut 5 drives the ball screw 2 to rotate, meanwhile, the spring 7 is compressed, after the train passes, the spring 7 stretches to push the nut 5 upwards, and the nut 5 drives the top 1 to return to the initial position. If the running speed of the train is slow, the relative speed of the roof 1 and the train is small, so that the roof 1 has little blocking effect on the train. If the train is running at a high speed, the relative speed of the roof 1 and the train is high, and thus the blocking effect on the train is large. In this embodiment, the retarder is fixed by a fixing frame 13.
Preferably, a nut anti-drop pin 4 is arranged at the top of the ball screw 2. The nut anti-drop pin 4 has a specific structure that a pin rod is transversely inserted into the top of the ball screw 2, so that the nut 5 can be blocked and limited after moving to the top of the ball screw 2, thereby preventing the nut 5 from being separated from the ball screw 2.
The upper end of the nut 3 is connected with a nut top connector 3 through a bolt 12, the cross section of the nut top connector 3 is L-shaped, and the nut top connector 3 is connected with the top 1 through a bolt or welded.
The lower end of the ball screw 2 is connected with a transmission shaft 9 through a coupler, and the transmission shaft 9 is rotatably connected with a fixing device through a bearing.
The fixing device comprises a force-unloading lower cover 11, a groove is formed in the force-unloading lower cover 11, the groove is matched with the end face bearing 10 in size, and the ball screw 2 is connected with the end face bearing 10.
The fixing device further comprises a force-unloading upper cover 8, the force-unloading upper cover 8 is connected with a force-unloading lower cover 11 through a bolt 12, a hole is formed in the force-unloading upper cover 8, and the ball screw 2 is connected with an end face bearing through the hole formed in the force-unloading upper cover 8.
The lower end of the ball screw 2 is in interference connection with the inner side of the end face bearing 10.
The outer side of the end face bearing 10 is in interference connection with the force-unloading lower cover 11.
The above examples merely illustrate specific embodiments of the application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the technical idea of the application, which fall within the scope of protection of the application.
Claims (8)
1. The utility model provides a freight train retarder based on ball mechanism, includes top (1) and base (6), its characterized in that: still include ball (2), the cooperation is provided with nut (5) on ball (2), top (1) and nut (5) fixed connection, and base (6) inboard is connected with fixing device, and ball (2) lower part and fixing device rotate to be connected, and the cover has spring (7) on ball (2), spring (7) are located between nut (5) and the fixing device.
2. A freight train retarder based on a ball screw mechanism according to claim 1, characterised in that the top of the ball screw (2) is provided with a nut anti-slip pin (4).
3. A freight train retarder based on a ball screw mechanism according to claim 1, characterized in that the upper end of the nut (5) is connected with a nut top connector (3), the cross section of the nut top connector (3) is L-shaped, and the nut top connector (3) is fixedly connected with the top (1).
4. A freight train retarder based on a ball screw mechanism according to claim 1, characterized in that the lower end of the ball screw (2) is connected with a transmission shaft (9) through a coupling, and the transmission shaft (9) is rotatably connected with a fixing device.
5. Freight train retarder based on a ball screw mechanism according to claim 1, characterised in that the fixing means comprise a lower unloading cover (11), in which lower unloading cover (11) an end bearing (10) is arranged, the ball screw (2) being connected to the end bearing (10).
6. The freight train retarder based on the ball screw mechanism according to claim 5, wherein the fixing device further comprises a force-unloading upper cover (8), the force-unloading upper cover (8) is fixedly connected with a force-unloading lower cover (11), and a hole for the ball screw (2) to pass through is formed in the force-unloading upper cover (8).
7. A freight train retarder based on a ball screw mechanism according to claim 5, characterised in that the ball screw (2) is in interference connection with the inner side of the end bearing (10).
8. A freight train retarder based on a ball screw mechanism according to claim 5, characterised in that the outer side of the end bearing (10) is in interference connection with the lower unloading cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396773.9A CN110001706B (en) | 2019-05-14 | 2019-05-14 | Freight train retarder based on ball screw mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396773.9A CN110001706B (en) | 2019-05-14 | 2019-05-14 | Freight train retarder based on ball screw mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110001706A CN110001706A (en) | 2019-07-12 |
| CN110001706B true CN110001706B (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910396773.9A Active CN110001706B (en) | 2019-05-14 | 2019-05-14 | Freight train retarder based on ball screw mechanism |
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| Country | Link |
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| CN (1) | CN110001706B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1135572A (en) * | 1965-07-30 | 1968-12-04 | Dowty Mining Equipment Ltd | Hydraulic devices for retarding of wheeled vehicles |
| GB1328086A (en) * | 1969-09-12 | 1973-08-30 | Dowty Mining Equipment Ltd | Wagon retarders |
| GB1462045A (en) * | 1973-02-28 | 1977-01-19 | Dowty Mining Equipment Ltd | Railway wagon speed control means |
| EP0046199A1 (en) * | 1980-08-18 | 1982-02-24 | Thyssen Industrie Aktiengesellschaft Schmiedetechnik/Bergbautechnik | Track-mounted hydraulic retarder for braking railway vehicles |
| CN2203254Y (en) * | 1994-04-29 | 1995-07-12 | 哈尔滨铁路局长轨段劳动服务公司 | Railway car stopping device |
| US5620077A (en) * | 1994-06-01 | 1997-04-15 | Electric Vehicle Controllers Ltd. | Fail-safe brake actuation system |
| CN202703621U (en) * | 2012-07-30 | 2013-01-30 | 吉林纵横铁路自动化设备有限责任公司 | Parking anti-running device for arrival-departure track |
| CN108799369A (en) * | 2018-06-11 | 2018-11-13 | 浙江亚太机电股份有限公司 | Electromagnetic-type electronic mechanical brake |
| CN108799030A (en) * | 2018-05-25 | 2018-11-13 | 北京航空航天大学 | Electromagnetic type vibration damping and energy-absorbing power generator |
-
2019
- 2019-05-14 CN CN201910396773.9A patent/CN110001706B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1135572A (en) * | 1965-07-30 | 1968-12-04 | Dowty Mining Equipment Ltd | Hydraulic devices for retarding of wheeled vehicles |
| GB1328086A (en) * | 1969-09-12 | 1973-08-30 | Dowty Mining Equipment Ltd | Wagon retarders |
| GB1462045A (en) * | 1973-02-28 | 1977-01-19 | Dowty Mining Equipment Ltd | Railway wagon speed control means |
| EP0046199A1 (en) * | 1980-08-18 | 1982-02-24 | Thyssen Industrie Aktiengesellschaft Schmiedetechnik/Bergbautechnik | Track-mounted hydraulic retarder for braking railway vehicles |
| CN2203254Y (en) * | 1994-04-29 | 1995-07-12 | 哈尔滨铁路局长轨段劳动服务公司 | Railway car stopping device |
| US5620077A (en) * | 1994-06-01 | 1997-04-15 | Electric Vehicle Controllers Ltd. | Fail-safe brake actuation system |
| CN202703621U (en) * | 2012-07-30 | 2013-01-30 | 吉林纵横铁路自动化设备有限责任公司 | Parking anti-running device for arrival-departure track |
| CN108799030A (en) * | 2018-05-25 | 2018-11-13 | 北京航空航天大学 | Electromagnetic type vibration damping and energy-absorbing power generator |
| CN108799369A (en) * | 2018-06-11 | 2018-11-13 | 浙江亚太机电股份有限公司 | Electromagnetic-type electronic mechanical brake |
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| Publication number | Publication date |
|---|---|
| CN110001706A (en) | 2019-07-12 |
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