CN114537463B - Overspeed protection railcar - Google Patents
Overspeed protection railcar Download PDFInfo
- Publication number
- CN114537463B CN114537463B CN202210177359.0A CN202210177359A CN114537463B CN 114537463 B CN114537463 B CN 114537463B CN 202210177359 A CN202210177359 A CN 202210177359A CN 114537463 B CN114537463 B CN 114537463B
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- Prior art keywords
- cylinder
- speed
- swing arm
- overspeed
- overspeed protection
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/20—Transmitting mechanisms
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an overspeed protection railcar, which comprises an overspeed detection device, a triggering system and an emergency stop system, wherein the overspeed detection device comprises a first detection device, a second detection device and a third detection device; the overspeed detection device comprises a speed taking device arranged on a vehicle body, wherein the input end of the speed taking device is in transmission connection with a running wheel at the bottom of the vehicle body through a chain, when the speed of the running wheel exceeds a designed speed, the output end of the speed taking device moves forward through a wire sleeve and compresses a valve core of a brake valve group in a trigger system, a spring release device in the trigger system works to drive a swing arm to swing downwards, a loop on the swing arm blocks a grapple device, and the other end of the loop is wound on a buffer with damping so as to immediately stop the rail vehicle.
Description
Technical Field
The invention relates to the field of overspeed protection rail cars, in particular to an overspeed protection rail car.
Background
In mine production, rail transportation is an important transportation mode for auxiliary transportation. In the rail transportation, if the speed of the rail car is out of control, serious accidents can be caused, secondary disasters can be caused, workers can be threatened, and the coal mining production efficiency can be influenced.
Disclosure of Invention
In view of the technical defects, the invention aims to provide an overspeed protection rail car which can open a trigger system when the rail car exceeds a set movement speed, and utilize a steel wire rope on a buffer to immediately stop the rail car, so that the active protection of the rail transport vehicle is realized, and the accident caused by the out-of-control speed of the rail transport vehicle is eliminated from the source.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides an overspeed protection railcar, which comprises an overspeed detection device, a triggering system and an emergency stop system, wherein the overspeed detection device comprises a first detection device, a second detection device, a first trigger device and a second trigger device; the overspeed detection device comprises a speed taking device arranged on the vehicle body, and the input end of the speed taking device is in transmission connection with a running wheel at the bottom of the vehicle body through a chain;
the trigger system comprises a pressure spring release device and a hydraulic oil cylinder; the pressure spring releasing device comprises an outer cylinder and an inner cylinder which are nested together, a limiting rod is fixed at the upper end of the inner cylinder, and the upper end of the limiting rod extends out of the outer cylinder and is in threaded connection with a limiting nut;
a release spring nested on the limiting rod is arranged in a cavity at the upper end of the outer barrel, the lower end of the inner barrel extends out of the outer barrel and is provided with a lifting lug, and a part of the vehicle body, which is close to the lifting lug, is provided with a rotatable swing arm; the lifting lug is movably connected with the swing arm to control the lifting lug to swing downwards;
the rear end of the hydraulic oil cylinder is fixed on the outer cylinder, the inner cavity of the hydraulic oil cylinder is provided with a bidirectional piston rod, the front end of the bidirectional piston rod penetrates out of the cylinder body and is provided with a baffle, a compression spring is connected between the baffle and a fixing plate at the rear end of the hydraulic oil cylinder, the compression spring is nested outside the cylinder body, and the rear end of the bidirectional piston rod penetrates through the outer cylinder and is embedded into the inner cylinder to play a role in fixing and limiting;
the front end oil way of the inner cavity of the hydraulic oil cylinder is connected with an oil outlet of a check valve and an oil inlet of a brake valve group, the oil outlet of the brake valve group is communicated with an oil tank, and the oil inlet of the check valve is communicated with an outlet of a manual pump; when the speed acquired by the speed acquiring device reaches a set threshold value, a moving screw sleeve at the output end of the speed acquiring device can move forwards and press a valve core of a brake valve group in the trigger system;
the emergency stop system comprises a buffer arranged on the vehicle body, a steel wire rope is wound on the buffer, and one end of the steel wire rope is provided with a complete set of ring shape and is fixedly bonded on the swing arm;
and a plurality of grab hook devices which are uniformly distributed and have openings back to the running direction are arranged on the inner side of the track where the running wheels run.
Preferably, the connection mode of lug and swing arm is pin junction, rotate on the lug and be connected with the round pin axle, it has the strip groove that supplies the round pin axle to pass to open on the swing arm.
Preferably, an oil outlet of the one-way valve is connected with a pressure gauge.
Preferably, a ground roller for lifting the steel wire rope is arranged beside each grapple device.
Preferably, the grapple device and the ground roller are fixed on the rail clamping device, and the rail clamping device is clamped and fixed on the inclined planes on two sides of the bottom of the rail.
Preferably, a plurality of guide wheels for the steel wire rope to pass through are arranged on the vehicle body.
Preferably, through holes for the bidirectional piston rod to pass through are formed in the outer cylinder and the inner cylinder.
Preferably, the outer cylinder and the inner cylinder are provided with positioning holes for the two-way piston rod to pass through.
The invention has the beneficial effects that: this device adopts the mode that hydraulic pressure and machinery combined together, can utilize the speed device to open trigger system when the railcar surpasss and sets for the rate of motion, utilizes pressure spring release control swing arm and lasso work among the trigger system, utilizes the wire rope on the buffer to make promptly the railcar stop, realizes rail transport vehicle's initiative protection, eliminates the occurence of failure after rail transport vehicle speed is out of control from the source.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view (left side view) of an overspeed protection railcar according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram (front view) of an overspeed protection railcar according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an emergency stop system according to an embodiment of the present invention;
fig. 4 is a schematic structural view (rear view) of an overspeed protection railcar according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a compressed spring releasing device according to an embodiment of the present invention;
fig. 6 is a schematic connection diagram of a trigger system according to an embodiment of the present invention.
Description of the reference numerals:
1. a rail clamp; 2. a track; 3. a drive wheel; 4. a chain; 5. a speed taking device; 6. a motion thread sleeve; 7. a brake valve bank; 8. a vehicle body; 9. a ground roller; 10. a grappling device; 11. a buffer; 12. a hydraulic cylinder; 12.1, a bidirectional piston rod; 12.2, compressing the spring; 13. a pressure spring release device; 13.1, a limit nut; 13.2, an outer cylinder; 13.3, inner cylinder; 13.4, releasing the spring; 14. swinging arms; 15. a ferrule; 16. a pressure gauge; 17. a one-way valve; 18. a manual pump; 19. and an oil tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1 to 6, an overspeed protection railcar includes an overspeed detecting device, a triggering system, and an emergency stop system; the overspeed detection device comprises a speed taking device 5 arranged on a vehicle body 8, wherein the input end of the speed taking device 5 is in transmission connection with a running wheel 3 at the bottom of the vehicle body 8 through a chain 4;
the trigger system comprises a pressure spring releasing device 13 and a hydraulic oil cylinder 12; the pressure spring release device 13 comprises an outer cylinder 13.2 and an inner cylinder 13.3 which are nested together, a limiting rod is fixed at the upper end of the inner cylinder 13.3, and the upper end of the limiting rod extends out of the outer cylinder 13.2 and is in threaded connection with a limiting nut 13.1;
a release spring 13.4 nested on the limiting rod is arranged in a cavity at the upper end of the outer cylinder 13.2, the lower end of the inner cylinder 13.3 extends out of the outer cylinder 13.2 and is provided with a lifting lug, and a part of the vehicle body 8 close to the lifting lug is provided with a rotatable swing arm 14; the lifting lug is movably connected with the swing arm 14 to control the lifting lug to swing downwards;
the rear end of the hydraulic oil cylinder 12 is fixed on the outer cylinder 13.2, the inner cavity of the hydraulic oil cylinder is provided with a bidirectional piston rod 12.1, the front end of the bidirectional piston rod 12.1 penetrates out of the cylinder body and is provided with a baffle, a compression spring 12.2 is connected between the baffle and a fixing plate at the rear end of the hydraulic oil cylinder 12, the compression spring 12.2 is nested outside the cylinder body 12, and the rear end of the bidirectional piston rod 12.1 penetrates through the outer cylinder 13.2 and is embedded into the inner cylinder 13.3 to play a role in fixing and limiting;
the front end oil way of the inner cavity of the hydraulic oil cylinder 12 is connected with an oil outlet of a check valve 17 and an oil inlet of a brake valve group 7, the oil outlet of the brake valve group 7 is communicated with an oil tank 19, and the oil inlet of the check valve 17 is communicated with an outlet of a manual pump 18;
when the wheel speed of the driving wheel 3 exceeds the allowed maximum running speed by 15%, the speed taking device 5 starts to work, the moving thread sleeve 6 at the output end of the speed taking device 5 can move forwards and press the valve core of the brake valve group 7 in the trigger system, and the brake valve group 7 is opened;
the speed-taking device 5 can be a product with the function in the prior art or a speed-taking device disclosed in Chinese patent CN 214578671U;
the emergency stop system comprises a buffer 11 arranged at the rear end of the vehicle body 8, friction plates are arranged in the buffer, the buffer has the function of adjusting resistance between the friction plates, a steel wire rope is wound on the buffer 11, and one end of the steel wire rope is arranged in a shape of a ferrule 15 and is fixed on a swing arm 14 in an adhering mode or temporarily fixed on the swing arm through a bolt; it is ensured that the collar 15 can be suspended at a high level under normal conditions without catching the grapple attachment 10 during the travel of the rail vehicle.
A plurality of evenly distributed grapple devices 10 with openings back to the running direction are arranged at the inner side of the track 2 where the running wheels 3 run,
the connection mode of lug and swing arm 14 is pin junction, rotate on the lug and be connected with the round pin axle, open the bar groove that supplies the round pin axle to pass on the swing arm 14.
An oil outlet of the one-way valve 17 is connected with a pressure gauge 16.
And a ground roller 9 for lifting the steel wire rope is arranged beside each grapple device 10.
The grapple device 10 and the ground roller 9 are both fixed on the rail clamping device 1, and the rail clamping device 1 is tightly fixed on the inclined planes at the two sides of the bottom of the rail 2.
And a plurality of guide wheels for the steel wire rope to pass through are arranged on the vehicle body 8.
The outer cylinder 13.2 and the inner cylinder 13.3 are provided with positioning holes for the two-way piston rod 12.1 to pass through.
The working principle of the trigger system and the pressure spring releasing device 13 is as follows: normally, the manual pump 18 is filled with hydraulic oil and enters an oil cavity at the front end of the bidirectional piston rod 12.1 through the one-way valve 17, oil enters the oil cavity at the front end, the bidirectional piston rod 12.1 overcomes the elasticity of the compression spring 12.2 and moves towards the rear end, and when the bidirectional piston rod 12.1 moves towards the rear end to the maximum displacement, the rear end of the bidirectional piston rod 12.1 is inserted into positioning holes of the outer cylinder 13.2 and the inner cylinder 13.3 to fix the outer cylinder 13.2 and the inner cylinder 13.3; at this time, the manual pump 18 is no longer filled with oil, the brake valve group 7 is in a normally closed state, and the pressure gauge 16 displays the system oil pressure. The check valve ensures that the oil pressure of the hydraulic ram 12 is maintained in a steady state.
The limit nut 13.1 is adjusted on the pressure spring release device 13 according to the designed position to control the stroke of the release spring 13.4.
When the brake valve bank 7 is opened, the hydraulic oil in the oil cavity of the hydraulic oil cylinder 12 returns to the oil tank 19 through the brake valve bank 7 from the normally closed state to the normally open state. After the hydraulic oil cylinder 12 is decompressed, the compression spring 12.2 does not have the pressing of oil pressure and extends outwards, the piston of the hydraulic oil cylinder 12 moves towards the front end, the bidirectional piston rod 12.1 synchronously moves towards the front end and is separated from the positioning hole of the inner cylinder 13.3, and when the bidirectional piston rod is completely separated, the inner cylinder 13.3 obtains freedom.
When the whole device is used, when the rail car 8 exceeds the allowed maximum running speed by 15%, the brake valve group 7 is opened, oil in an oil cavity of the hydraulic oil cylinder 12 is decompressed and returned to the oil tank 19, the compression spring 12.2 pushes the bidirectional piston rod 12.1 back to the front end under the condition that no oil pressure exists in the inner cavity of the hydraulic oil cylinder 12, the rear end of the bidirectional piston rod 12.1 is drawn out from the outer cylinder 13.2 and the inner cylinder 13.3, the release spring 13.4 pushes the inner cylinder 13.3 to slide downwards, a lifting lug at the lower end of the inner cylinder 13.3 drives the swing arm 14 to rotate downwards, the taken ferrule 15 rotates and falls along with the bidirectional piston rod, the pressure spring release device 13 extends out within a set stroke, after the stroke, the pressure spring release device 13 stops extending, and the ferrule 15 just rotates and falls in front of the grappling device 10 connected with the rail 2; when the loop 15 is stuck in the opening of the grappling device 10, the loop 15 is forced to fall off the swing arm 14, and the loop 15 is pulled out by the grappling device 10.
The buffer 11 with the damping friction plate is used for fixing the other end of the steel wire rope, the damping friction resistance set in advance is the final guarantee for preventing the railcar 8 from being out of control, the friction resistance of the buffer 11 is converted into the tensile force of the steel wire rope, and the railcar 8 is stopped slowly.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An overspeed protection rail car is characterized by comprising an overspeed detection device, a trigger system and an emergency stop system; the overspeed detection device comprises a speed taking device (5) arranged on a vehicle body (8), wherein the input end of the speed taking device (5) is in transmission connection with a running wheel (3) at the bottom of the vehicle body (8) through a chain (4);
the trigger system comprises a pressure spring release device (13) and a hydraulic oil cylinder (12); the pressure spring release device (13) comprises an outer cylinder (13.2) and an inner cylinder (13.3) which are nested together, a limiting rod is fixed at the upper end of the inner cylinder (13.3), and the upper end of the limiting rod extends out of the outer cylinder (13.2) and is in threaded connection with a limiting nut (13.1);
a release spring (13.4) nested on the limiting rod is arranged in a cavity at the upper end of the outer cylinder (13.2), the lower end of the inner cylinder (13.3) extends out of the outer cylinder (13.2) and is provided with a lifting lug, and a part of the vehicle body (8) close to the lifting lug is provided with a swing arm (14) capable of rotating; the lifting lug is movably connected with the swing arm (14) to control the lifting lug to swing downwards;
the rear end of the hydraulic oil cylinder (12) is fixed on the outer cylinder (13.2), the inner cavity of the hydraulic oil cylinder is provided with a bidirectional piston rod (12.1), the front end of the bidirectional piston rod (12.1) penetrates out of the cylinder body and is provided with a baffle, a compression spring (12.2) is connected between the baffle and a fixing plate at the rear end of the hydraulic oil cylinder (12), the compression spring (12.2) is nested outside the cylinder body, and the rear end of the bidirectional piston rod (12.1) penetrates through the outer cylinder (13.2) and is embedded into the inner cylinder (13.3) to fix and limit the cylinder;
the front end oil way of the inner cavity of the hydraulic oil cylinder (12) is connected with an oil outlet of a check valve (17) and an oil inlet of a brake valve group (7), the oil outlet of the brake valve group (7) is communicated with an oil tank (19), and the oil inlet of the check valve (17) is communicated with an outlet of a manual pump (18); when the speed acquired by the speed acquiring device (5) reaches a set threshold value, a moving screw sleeve (6) at the output end of the speed acquiring device can move forwards and press a valve core of a brake valve group (7) in the trigger system;
the emergency stop system comprises a buffer (11) arranged on a vehicle body (8), a steel wire rope is wound on the buffer (11), and one end of the steel wire rope is arranged into a ferrule (15) shape and is fixedly bonded on a swing arm (14); a plurality of evenly distributed grapple devices (10) with openings back to the running direction are arranged on the inner side of the track (2) where the running wheels (3) run.
2. The overspeed protection railcar according to claim 1, wherein the connection mode of the lifting lug and the swing arm (14) is pin connection, the lifting lug is rotatably connected with a pin shaft, and the swing arm (14) is provided with a strip-shaped groove for the pin shaft to pass through.
3. The overspeed protection railway car of claim 1, characterized in that the oil outlet of said check valve (17) is connected to a pressure gauge (16).
4. An overspeed protection railway car as claimed in claim 1, characterized in that a ground roller (9) for lifting the wire rope is provided beside each said grapple attachment (10).
5. The overspeed protection railway car as claimed in claim 1, characterized in that the grapple attachment (10) and the ground roller (9) are fixed to the rail clamp (1), and the rail clamp (1) is clamped and fixed to the inclined surfaces on both sides of the bottom of the track (2).
6. An overspeed protection railcar according to claim 1, characterized in that said body (8) is provided with a plurality of guide wheels through which the wire rope passes.
7. The overspeed protection railcar according to claim 1, characterized in that said outer (13.2) and inner (13.3) cylinders are provided with positioning holes for the bi-directional piston rods (12.1) to pass through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177359.0A CN114537463B (en) | 2022-02-25 | 2022-02-25 | Overspeed protection railcar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210177359.0A CN114537463B (en) | 2022-02-25 | 2022-02-25 | Overspeed protection railcar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114537463A CN114537463A (en) | 2022-05-27 |
| CN114537463B true CN114537463B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210177359.0A Active CN114537463B (en) | 2022-02-25 | 2022-02-25 | Overspeed protection railcar |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786736A (en) * | 2014-01-22 | 2014-05-14 | 中国矿业大学 | Inclined roadway rail transport braking car |
| CN203996187U (en) * | 2014-05-21 | 2014-12-10 | 江苏创导煤机有限公司 | Mining transportation vehicle speed limit automatic brake arrangement |
| CN104527712A (en) * | 2014-11-14 | 2015-04-22 | 中国矿业大学 | Over-speed dynamic capture hydraulic system for rail transportation carts |
| CN112550344A (en) * | 2020-12-23 | 2021-03-26 | 云南星石科技有限公司 | Overspeed braking vehicle for rack rail clamping vehicle |
| CN112918507A (en) * | 2020-11-30 | 2021-06-08 | 中国矿业大学 | Inclined drift automatic anti-running mine car and anti-running braking method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2243906C (en) * | 1998-07-23 | 2007-11-13 | National Steel Car Limited | Railcar brake structure |
-
2022
- 2022-02-25 CN CN202210177359.0A patent/CN114537463B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786736A (en) * | 2014-01-22 | 2014-05-14 | 中国矿业大学 | Inclined roadway rail transport braking car |
| CN203996187U (en) * | 2014-05-21 | 2014-12-10 | 江苏创导煤机有限公司 | Mining transportation vehicle speed limit automatic brake arrangement |
| CN104527712A (en) * | 2014-11-14 | 2015-04-22 | 中国矿业大学 | Over-speed dynamic capture hydraulic system for rail transportation carts |
| CN112918507A (en) * | 2020-11-30 | 2021-06-08 | 中国矿业大学 | Inclined drift automatic anti-running mine car and anti-running braking method thereof |
| CN112550344A (en) * | 2020-12-23 | 2021-03-26 | 云南星石科技有限公司 | Overspeed braking vehicle for rack rail clamping vehicle |
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| Publication number | Publication date |
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| CN114537463A (en) | 2022-05-27 |
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