CN115179915A - Railway vehicle braking empty-load two-stage weight measuring mechanism - Google Patents
Railway vehicle braking empty-load two-stage weight measuring mechanism Download PDFInfo
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- CN115179915A CN115179915A CN202210830172.6A CN202210830172A CN115179915A CN 115179915 A CN115179915 A CN 115179915A CN 202210830172 A CN202210830172 A CN 202210830172A CN 115179915 A CN115179915 A CN 115179915A
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- weight measuring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
- B60T8/1837—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the load-detecting arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
- B60T8/1893—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution especially adapted for railway vehicles
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a two-stage weighing mechanism for empty and heavy braking of a railway vehicle, which comprises a weighing component and a sensing valve, wherein the distance between a weighing sleeve of the weighing component and a suppression disc feeds back the load of the truck, a first upper valve cavity and a first lower valve cavity are arranged in a first valve body of the sensing valve, a first cavity piston component and a first rod piston component are arranged between the first upper valve cavity and the first lower valve cavity, a first channel is arranged on the first cavity piston component, the first rod piston component is arranged on the first cavity piston component in a penetrating manner, the lower end of the first rod piston component is opposite to the inlet of the first channel, the upper end of the first rod piston component is opposite to the suppression disc, the weighing sleeve is connected with the first valve body, the first upper valve cavity is communicated with an air exhaust port of an air cylinder, and the first lower valve cavity is communicated with an air inlet of a brake cylinder. The invention has the beneficial effects that: according to the scheme of the two-stage empty and load vehicle sensing valve, the opening and closing of the valve port of the sensing valve are judged by adopting the change of the gap between the feeler lever and the suppression disc, so that whether the pressure air of the brake cylinder is distributed to the pressure reduction air cylinder or not is realized.
Description
Technical Field
The invention belongs to a rail train, and particularly relates to a two-stage weight measuring mechanism for the braking empty weight of a railway vehicle.
Background
The existing automatic empty-load vehicle adjusting device for the railway wagon generally adopts a stepless automatic empty-load vehicle adjusting device, can automatically adjust the pressure of a brake cylinder according to the load condition of a vehicle, is suitable for various load working conditions of a general railway vehicle, has the defects of low control precision of the pressure of the brake cylinder and relatively high failure rate, and is particularly not suitable for the non-empty or heavy operating condition of a coal-carrying vehicle of a heavy-load special line. On one hand, the function of adjusting the brake cylinder from an all-empty vehicle to an all-heavy parking space is wasted, and on the other hand, the control precision of the brake cylinder pressure is insufficient, and the brake adhesion cannot be utilized by charging air.
The existing empty and heavy vehicle adjusting device is a stepless empty and heavy vehicle automatic adjusting device, and has the defects of restraining the blockage of the inventory, leakage of a pressure reduction air cylinder at an exhaust port of a sensing valve touch rod, release of blockage of an exhaust port of a pressure reduction air chamber, falling of a dust cover, bending of a pressure limiting valve empty and heavy vehicle display piston rod, overturning faults of an empty and heavy vehicle indicator board, overturning of a sandwich valve and other inertia faults in the application process, low pressure control precision of an empty and heavy vehicle brake cylinder, low shunt opening pressure of the empty and heavy vehicle brake cylinder, inconsistent full-empty or full-heavy application working conditions of a stepless empty and heavy vehicle and a heavy load special line and the like.
Disclosure of Invention
The invention aims to: the invention provides a railway vehicle braking empty and heavy two-stage weight measuring mechanism, which is suitable for the non-empty or heavy operating condition of a heavy-duty special line vehicle and improves the pressure control precision of a brake cylinder so as to improve the brake adhesion utilization rate.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a railway vehicle braking empty and heavy two-stage check weighing machine constructs, including check weighing subassembly and sensing valve, check weighing subassembly includes suppression dish and check weighing sleeve pipe, the load size of distance size feedback freight train between check weighing sleeve pipe and the suppression dish, the sensing valve includes first valve body, be equipped with first upper valve chamber and first lower valve chamber in the first valve body, be equipped with first chamber piston subassembly and first pole piston subassembly between first upper valve chamber and the first lower valve chamber, be equipped with the first passageway of intercommunication valve chamber on the first chamber piston subassembly, first pole piston subassembly wears to establish on the first chamber piston subassembly, the lower extreme of first pole piston subassembly is relative with the import of first passageway, the upper end of first pole piston subassembly is relative with the suppression dish, check weighing sleeve pipe is connected with first valve body, first upper valve chamber (802) and reservoir gas vent intercommunication, first lower valve chamber and valve chamber air inlet intercommunication.
Further, the weight measuring component comprises a restraining disc, a weight measuring sleeve rod, a weight measuring sleeve pipe, a weight measuring spring and a spring seat, the restraining disc is connected with the upper end of the weight measuring sleeve rod, the weight measuring sleeve rod is sleeved in the weight measuring sleeve pipe, the lower end of the weight measuring sleeve rod is clamped with the spring seat, and the weight measuring spring is arranged between the spring seat and the lower end of the weight measuring sleeve pipe.
Furthermore, the spring seat is of a convex cross section.
Furthermore, the first valve body is connected with the bearing component, and the lower end of the weight measuring sleeve rod is opposite to the cross beam.
Furthermore, the first cavity piston assembly comprises a first cavity piston and a first upper spring, the first cavity piston is arranged on the first valve body in a vertical sliding sealing mode, the first cavity piston is arranged between the first upper valve cavity and the first lower valve cavity, and the first upper spring is arranged between the upper end of the first cavity piston and the first valve body.
Further, the first passage includes a clearance between the first cavity piston and the first rod piston assembly.
Furthermore, a back pressure discharge hole is formed in the first valve body and communicated to a gap between the first cavity piston and the first valve body.
Further, first pole piston assembly include first springdown, first well core rod, first pole piston and first dust cover, first well core rod wears to establish on first chamber piston assembly, first valve body is worn out and is connected with first dust cover to first well core rod's upper end, first dust cover is relative with restraining the dish, first well core rod's lower extreme and first pole piston are connected, first pole piston is relative with the import of first passageway, first springdown is established between first pole piston's lower extreme and first valve body.
Further, the first passage includes a communication hole in the first center rod.
Furthermore, the upper part of the first dust cover is arc-shaped.
The invention has the beneficial effects that: according to the scheme of the two-stage empty and load vehicle sensing valve, the opening and closing of the valve port of the sensing valve are judged by adopting the change of the gap between the feeler lever and the suppression disc, so that whether the pressure air of the brake cylinder is distributed to the pressure reduction air cylinder or not is realized.
The main scheme and each further selected scheme of the invention can be freely combined to form a plurality of schemes which are adopted and claimed by the invention; in the invention, the selection (each non-conflict selection) and other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a sectional view of the sensor valve structure of the present invention.
Fig. 3 is a schematic view of the empty space structure of the present invention.
Fig. 4 is a schematic diagram of the heavy vehicle position structure of the present invention.
In the figure: 5-a brake cylinder, 6-a pressure reduction air cylinder, 8-a sensing valve and 10-a cross beam; 701-a restraining disc, 702-a weight measuring sleeve rod, 703-a weight measuring sleeve, 704-a weight measuring spring and 705-a spring seat; 801-first valve body, 802-first upper valve chamber, 803-first lower valve chamber, 804-first chamber piston, 805-first upper spring, 806-first lower spring, 807-first central rod, 808-first passage, 809-first rod piston, 8010-first dust guard, 8011-row back pressure hole.
Detailed Description
The following non-limiting examples serve to illustrate the invention.
Example 1:
referring to fig. 1 to 4, the two-stage weighing mechanism for the empty weight and the braking weight of the railway vehicle comprises a weighing component and a sensing valve 8.
The weight measuring assembly comprises a suppression disc 701 and a weight measuring sleeve 703, and the load of the truck is fed back by the distance between the weight measuring sleeve 703 and the suppression disc 701. When the vehicle is empty, the restraining disk 701 is attached to the upper end of the weight measuring sleeve 703, and the distance between the restraining disk 701 and the weight measuring sleeve 703 is the smallest. When the vehicle is restarted, the suppression disc 701 and the weight measurement sleeve 703 are separated from each other, and the distance between the suppression disc and the weight measurement sleeve is gradually increased.
The sensing valve 8 comprises a first valve body 801, a first upper valve cavity 802 and a first lower valve cavity 803 are arranged in the first valve body 801, a first cavity piston assembly and a first rod piston assembly are arranged between the first upper valve cavity 802 and the first lower valve cavity 803, a first passage 808 communicated with the valve cavity is arranged on the first cavity piston assembly, the first rod piston assembly is arranged on the first cavity piston assembly in a penetrating mode, the lower end of the first rod piston assembly is opposite to an inlet of the first passage 808, therefore, the first cavity piston assembly can move up relative to the first rod piston assembly, but when moving down, the first cavity piston assembly clamps the lower end of the first rod piston assembly to move down synchronously. The upper end of the first rod-piston assembly is opposite to the suppression disc 701, the weight measuring sleeve 703 is connected with the first valve body 801, the first upper valve cavity 802 is communicated with the air cylinder exhaust port, the air cylinder exhaust port is communicated with the pressure reduction air cylinder 6, the first lower valve cavity 803 is communicated with the brake cylinder inlet port, and the brake cylinder inlet port is communicated with the brake cylinder 5.
The pressure differential between the first upper valve chamber 802 and the first lower valve chamber 803 is fed back over the first chamber piston assembly and the first rod piston assembly. When the pressure difference between the two valve cavities is upward and the two piston assemblies synchronously move upward, the first rod piston assembly can be blocked by the inhibition disc 701 after a certain distance, so that the first cavity piston assembly and the first rod piston assembly can be separated, and the first passage 808 can be opened. If the distance of the restraining disk 701 is too far, the first rod piston assembly is not in contact with the restraining disk 701 at all times, and the first passage 808 is in a closed state. When the pressure differential between the two valve chambers is downward, the first chamber piston assembly carries the first rod piston assembly synchronously downward and closes the first passage 808.
When the vehicle is empty, the distance between the suppression disc 701 and the weight measuring sleeve 703 is small. In the brake and dwell state, pressurized air entering the first lower valve chamber 803 from the brake cylinder 5 pushes up on the first chamber piston assembly and the first rod piston assembly, the first rod piston assembly is blocked to the damping disc 701, the first chamber piston assembly moves upward relative to the damping disc, and the first passage 808 is now open. In the relieved condition, the pressure in the brake cylinder 5 and the first lower valve chamber 803 are synchronously lowered, the first chamber piston assembly is lowered with the first rod piston assembly, and the first passage 808 is closed.
When the vehicle is parked at a heavy parking place, the distance between the suppression disc 701 and the weight measuring sleeve 703 is large, and the first rod piston assembly cannot be relatively separated from the first cavity piston assembly because the first rod piston assembly cannot be in contact with the suppression disc 701 all the time, and the first channel 808 is kept closed all the time.
Example 2:
referring to fig. 1 to 4, a two-stage weight measuring mechanism for the empty weight of a railway vehicle brake is disclosed.
The weight measuring component comprises a suppression disc 701, a weight measuring sleeve rod 702, a weight measuring sleeve 703, a weight measuring spring 704 and a spring seat 705, the suppression disc 701 is connected with the upper end of the weight measuring sleeve rod 702, the weight measuring sleeve rod 702 is sleeved in the weight measuring sleeve 703, the spring seat 705 is clamped at the lower end of the weight measuring sleeve rod 702, and the weight measuring spring 704 is arranged between the spring seat 705 and the lower end of the weight measuring sleeve 703.
The spring seat 705 is of a convex cross section, the traditional short concave structure of the spring seat 705 is replaced by a high convex structure, and the problem of disc clamping stagnation is solved by lengthening the guide of the spring seat.
The first valve body 801 is connected to a load bearing member, and the lower end of the weight measuring bush 702 is opposed to the cross member 10. When the vehicle is empty, the load bearing member is positioned above, the weight measuring spring 704 is expanded, the suppression disc 701 is pressed at the upper end of the weight measuring sleeve 703, and at the moment, the distance between the suppression disc 701 and the weight measuring sleeve 703 is small. When the vehicle is in a heavy vehicle, the load bearing member moves downwards under the gravity of the goods, the lower end of the weight measuring sleeve rod 702 contacts the cross beam 10, the weight measuring sleeve rod 702 compresses the weight measuring spring 704 because the position of the cross beam is unchanged, the inhibition disc 701 moves upwards relative to the weight measuring sleeve 703, and the distance between the inhibition disc 701 and the weight measuring sleeve 703 is larger.
The first chamber piston assembly comprises a first chamber piston 804 and a first upper spring 805, the first chamber piston 804 is arranged on the first valve body 801 in a vertically sliding sealing mode, the first chamber piston 804 is arranged between the first upper valve chamber 802 and the first lower valve chamber 803, and the first upper spring 805 is arranged between the upper end of the first chamber piston 804 and the first valve body 801. The first upper spring 805 provides a downward force to the first chamber piston 804, ensuring the abutment of the first chamber piston 804 with the first rod piston 809.
A back pressure discharge hole 8011 is formed in the first valve body 801, the back pressure discharge hole 8011 is communicated with a gap between the first cavity piston 804 and the first valve body 801, when a parking space is empty, a first channel is opened, a brake cylinder is communicated with a pressure reduction air cylinder, no pressure difference exists between the brake cylinder and the pressure reduction air cylinder, and the influence of a sensing valve on the pressure control precision of the brake cylinder is eliminated.
The first rod piston assembly comprises a first lower spring 806, a first central rod 807, a first rod piston 809 and a first dust cover 8010, the first central rod 807 is arranged on the first chamber piston assembly in a penetrating way, and the upper end of the first central rod 807 penetrates through the first valve body 801 and is connected with the first dust cover 8010.
The upper portion of the first dust cover 8010 is arc-shaped, and a cambered surface structure is adopted to prevent accumulated snow and sundries from staying, so that the problem of leakage of the sensing valve caused by the fact that the contact rod cannot normally extend out is solved. The upper end of the first center rod 807 is connected with the elastic steel wire retainer ring for the first dust cover 8010, so that the existing transition fit structure is replaced, and the problem that the dust cover is loosened/falls off is solved.
The first dust cover 8010 is opposite to the suppressing disk 701, and when the first dust cover 8010 contacts the suppressing disk 701 after the first center rod 807 moves up by a distance, the first center rod 807 cannot move up further. The lower end of the first center rod 807 is connected with a first rod piston 809, the first rod piston 809 is opposite to the inlet of the first channel 808, and the first channel 808 can be shielded by the first rod piston 809. The first lower spring 806 is disposed between the lower end of the first rod piston 809 and the first valve body 801 to ensure the attachment of the first chamber piston 804 to the first rod piston 809.
The first passage includes a clearance between the first chamber piston 804 and the first rod piston assembly, and a communication hole in the first central rod 807 to allow communication between the upper and lower valve chambers.
The proper sensing valve empty-weight conversion spring load is designed, the shunting opening point of the empty parking space brake cylinder is improved, and the initial jump performance of the brake system is improved.
The advanced points of the adjusting device are as follows: 1. the problems of inertia faults and the like of blocking of a restraining disc, leakage of a sensing valve, blockage of a pressure reduction air chamber, falling of a dust cover, bending of a piston rod of a pressure limiting valve empty and heavy vehicle, overturning faults of an empty and heavy vehicle indicating plate, overturning of a sandwich valve and the like can be avoided from the source of the design structure; 2. the pressure control precision of the brake cylinder of the empty vehicle can be improved; 3. the initial jump performance of the brake system is improved; 4. the system is more suitable for the working condition requirements of full-empty or full-weight operation of the heavy-load special line vehicle.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a railway vehicle braking empty weight two-stage weighing mechanism, includes weight measuring component and sensing valve (8), its characterized in that: the weight measuring assembly comprises a restraining disc (701) and a weight measuring sleeve (703), the distance between the weight measuring sleeve (703) and the restraining disc (701) feeds back the load of the truck, the sensing valve (8) comprises a first valve body (801), a first upper valve cavity (802) and a first lower valve cavity (803) are arranged in the first valve body (801), a first cavity piston assembly and a first rod piston assembly are arranged between the first upper valve cavity (802) and the first lower valve cavity (803), a first channel (808) communicated with the valve cavities is arranged on the first cavity piston assembly, the lower end of the first rod piston assembly is opposite to the inlet of the first channel (808), the upper end of the first rod piston assembly is opposite to the restraining disc (701), the weight measuring sleeve (703) is connected with the first valve body (801), the first upper valve cavity (802) is communicated with the exhaust port of the air cylinder, and the first lower valve cavity (803) is communicated with the brake cylinder.
2. A railway vehicle braking empty and weight two-stage weight measuring mechanism according to claim 1, characterized in that: the weight measuring component comprises a suppression disc (701), a weight measuring sleeve rod (702), a weight measuring sleeve pipe (703), a weight measuring spring (704) and a spring seat (705), the suppression disc (701) is connected with the upper end of the weight measuring sleeve rod (702), the weight measuring sleeve rod (702) is sleeved in the weight measuring sleeve pipe (703), the lower end of the weight measuring sleeve rod (702) is clamped with the spring seat (705), and the weight measuring spring (704) is arranged between the spring seat (705) and the lower end of the weight measuring sleeve pipe (703).
3. A railway vehicle braking empty-weight two-stage weight measuring mechanism according to claim 2, characterized in that: the spring seat (705) is of a convex cross section.
4. A railway vehicle braking empty-weight two-stage weight measuring mechanism according to claim 2, characterized in that: the first valve body (801) is connected with a bearing component, and the lower end of the weight measuring sleeve rod (702) is opposite to the cross beam (10).
5. A railway vehicle braking empty and weight two-stage weight measuring mechanism according to claim 1, characterized in that: the first cavity piston assembly comprises a first cavity piston (804) and a first upper spring (805), the first cavity piston (804) is arranged on a first valve body (801) in a vertical sliding sealing mode, the first cavity piston (804) is arranged between a first upper valve cavity (802) and a first lower valve cavity (803), and the first upper spring (805) is arranged between the upper end of the first cavity piston (804) and the first valve body (801).
6. A railway vehicle braking empty and weight two-stage weight measuring mechanism according to claim 5, characterized in that: the first passage includes a clearance between a first cavity piston (804) and a first rod piston assembly.
7. The railway vehicle braking empty-weight two-stage weight measuring mechanism according to claim 5, wherein: the first valve body (801) is provided with a back pressure discharge hole (8011), and the back pressure discharge hole (8011) is communicated with a gap between the first cavity piston (804) and the first valve body (801).
8. A railway vehicle braking empty and weight two-stage weight measuring mechanism according to claim 1, characterized in that: the first rod piston assembly comprises a first lower spring (806), a first central rod (807), a first rod piston (809) and a first dustproof cover (8010), the first central rod (807) penetrates through the first cavity piston assembly, the upper end of the first central rod (807) penetrates through the first valve body (801) and is connected with the first dustproof cover (8010), the first dustproof cover (8010) is opposite to the suppression disc (701), the lower end of the first central rod (807) is connected with the first rod piston (809), the first rod piston (809) is opposite to an inlet of a first channel (808), and the first lower spring (806) is arranged between the lower end of the first rod piston (809) and the first valve body (801).
9. A railway vehicle braking empty and weight two-stage weight measuring mechanism according to claim 8, characterized in that: the first channel (808) comprises a communication hole on the first central rod (807).
10. A railway vehicle braking empty and weight two-stage weight measuring mechanism according to claim 8, characterized in that: the upper part of the first dust cover (8010) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210830172.6A CN115179915A (en) | 2022-07-15 | 2022-07-15 | Railway vehicle braking empty-load two-stage weight measuring mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210830172.6A CN115179915A (en) | 2022-07-15 | 2022-07-15 | Railway vehicle braking empty-load two-stage weight measuring mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115179915A true CN115179915A (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210830172.6A Withdrawn CN115179915A (en) | 2022-07-15 | 2022-07-15 | Railway vehicle braking empty-load two-stage weight measuring mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115179915A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3615154A1 (en) * | 1986-05-05 | 1987-11-12 | Teves Gmbh Alfred | Brake pressure control valve arrangement |
| JPH01295086A (en) * | 1988-03-23 | 1989-11-28 | Robert Bosch Gmbh | Electronic control valve |
| CN2288891Y (en) * | 1996-12-03 | 1998-08-26 | 北京昌平机车车辆机械厂 | Aerodynamic brake with control flap for rail vehicle |
| CN2640861Y (en) * | 2003-09-16 | 2004-09-15 | 张振清 | Empty heavy lorry auto stepless regulator |
| CN2652743Y (en) * | 2003-09-16 | 2004-11-03 | 杨岁海 | Automatic stepless regulator for empty lurry |
| CN201800730U (en) * | 2010-09-29 | 2011-04-20 | 齐齐哈尔轨道交通装备有限责任公司 | Empty and load valve for rolling stock |
| CN106585660A (en) * | 2016-12-21 | 2017-04-26 | 中国铁道科学研究院 | Automatic regulating apparatus for empty and heavy vehicle used for air braking system of fast lorry |
| CN106740774A (en) * | 2016-12-02 | 2017-05-31 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock and its weighing valve |
| CN114348043A (en) * | 2021-12-23 | 2022-04-15 | 湖南铁路科技职业技术学院 | Device for stepless automatic adjustment of braking force of empty and heavy wagon of railway wagon |
-
2022
- 2022-07-15 CN CN202210830172.6A patent/CN115179915A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3615154A1 (en) * | 1986-05-05 | 1987-11-12 | Teves Gmbh Alfred | Brake pressure control valve arrangement |
| JPH01295086A (en) * | 1988-03-23 | 1989-11-28 | Robert Bosch Gmbh | Electronic control valve |
| CN2288891Y (en) * | 1996-12-03 | 1998-08-26 | 北京昌平机车车辆机械厂 | Aerodynamic brake with control flap for rail vehicle |
| CN2640861Y (en) * | 2003-09-16 | 2004-09-15 | 张振清 | Empty heavy lorry auto stepless regulator |
| CN2652743Y (en) * | 2003-09-16 | 2004-11-03 | 杨岁海 | Automatic stepless regulator for empty lurry |
| CN201800730U (en) * | 2010-09-29 | 2011-04-20 | 齐齐哈尔轨道交通装备有限责任公司 | Empty and load valve for rolling stock |
| CN106740774A (en) * | 2016-12-02 | 2017-05-31 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock and its weighing valve |
| CN106585660A (en) * | 2016-12-21 | 2017-04-26 | 中国铁道科学研究院 | Automatic regulating apparatus for empty and heavy vehicle used for air braking system of fast lorry |
| CN114348043A (en) * | 2021-12-23 | 2022-04-15 | 湖南铁路科技职业技术学院 | Device for stepless automatic adjustment of braking force of empty and heavy wagon of railway wagon |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20221014 |