CN115009319B - Coupling device for rail transit vehicle - Google Patents
Coupling device for rail transit vehicle Download PDFInfo
- Publication number
- CN115009319B CN115009319B CN202210757334.8A CN202210757334A CN115009319B CN 115009319 B CN115009319 B CN 115009319B CN 202210757334 A CN202210757334 A CN 202210757334A CN 115009319 B CN115009319 B CN 115009319B
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- Prior art keywords
- push
- main body
- universal
- rail transit
- plate
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- 230000008878 coupling Effects 0.000 title claims abstract description 41
- 238000010168 coupling process Methods 0.000 title claims abstract description 41
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 41
- 230000007246 mechanism Effects 0.000 claims description 25
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims 2
- 230000007547 defect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61G—COUPLINGS; DRAUGHT AND BUFFING APPLIANCES
- B61G7/00—Details or accessories
- B61G7/10—Mounting of the couplings on the vehicle
Abstract
The coupling device for the rail transit vehicle comprises a coupling main body, wherein one end of the coupling main body is provided with a first connecting part connected with a towed body, and the other end of the coupling main body is provided with a second connecting part connected with the towed body; two sides of the first connecting part are provided with an epitaxial push rod, and the push rod is provided with a push plate for being abutted with a towed body; the linking main body is movably connected with the first connecting part. The invention is connected with the tractor through the coupling device, and the tractor is used for traction movement, so that the carriage of the chain coupler can move and circulate among different stations, thereby overcoming the defect of the traditional manual cart; and can realize the push-pull dual-purpose function according to the user demand.
Description
Technical Field
The invention relates to a coupling device, in particular to a coupling device for a rail transit vehicle.
Background
The tractor is a transport tool matched with various railway vehicles, and can timely and rapidly pull away unpowered or damaged vehicles on the railway by the traction of the tractor in an intermittent and periodic working mode, and the tractor can walk on the railway and the ground to realize the traction of different types of vehicles.
The car coupler patterns on the existing tractor are basically 15-number hooks, tight-locking hooks and the like, and can be directly linked with the existing majority of car couplers, but the car coupler has the defects that: the carriage of the chain coupler of the traction equipment cannot be connected, the chain coupler can only bear the tensile force, the chain coupler cannot be used when the trolley is pushed, if the carriage can only be pulled by the tractor, then when the carriage needs to run in the opposite direction, the carriage needs to be pushed to the other direction manually, for example, the tractor is in front of the carriage, the existing tractor can only pull the carriage to advance in the forward direction, but cannot realize the advance in the direction of the carriage, the tractor needs to be changed into one direction, time and labor are wasted, and if the tractor runs on a track, the position is difficult to be exchanged. Therefore, the present invention has a need to design a hitch for connecting a chain coupler car and a tractor, which can realize the functions of pushing and pulling according to the needs of users.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the coupling device for the rail transit vehicle, which is dual-purpose in push-pull, flexible in adjustment, time-saving, labor-saving and low in cost.
The technical scheme of the invention is as follows: the coupling device for the rail transit vehicle comprises a coupling main body, wherein one end of the coupling main body is provided with a first connecting part connected with a towed body, and the other end of the coupling main body is provided with a second connecting part connected with the towed body; two sides of the first connecting part are provided with an epitaxial push rod, and the push rod is provided with a push plate for being abutted with a towed body; the linking main body is movably connected with the first connecting part.
Further, a universal mechanism and a length adjusting mechanism are arranged between the push rod and the push plate.
Further, a universal nut is welded on the back of the push plate, one end of the push rod is connected with a screw rod through threads, a universal joint is arranged on the screw rod, and the universal nut and the universal joint form the universal mechanism; the length adjusting mechanism is formed between the screw rod and the threads of the push rod.
Further, the universal joint is a spherical joint, the universal nut is provided with a spherical recess and can be matched with the spherical joint, the fit clearance between the universal nut and the spherical joint is not more than 1mm, the adjustment direction of the universal mechanism can be ensured, and meanwhile, the fixing direction is kept under the action of no external force.
Further, the push rod is a piston rod, the piston rod is connected with a driving cylinder, and the piston rod is driven to stretch and retract through the driving cylinder, so that the length adjusting mechanism is formed; and the piston rod is connected with a universal mechanism.
Further, a reinforcing sleeve is arranged on the push rod; the push plate is provided with a connecting hole which is fixedly connected with the towed body.
Further, the first connecting portion is provided with a connecting plate which is arranged up and down oppositely at the end connected with the coupling main body, the coupling main body stretches into between the upper connecting plate and the lower connecting plate, and the coupling main body and the first connecting portion are connected in a rotating mode through the connecting plate and the coupling main body through a connecting pin.
Further, two ends of the first connecting part extend outwards to form fixed arms in mirror image arrangement respectively, and one end of the push rod penetrates through the fixed arms and is fixedly connected with the fixed arms; or the two ends of the first connecting part are respectively connected with a driving cylinder, and the driving cylinders are connected with the push plate through piston rods.
Further, the first connecting portion comprises two side plates which are oppositely arranged, the top surface and/or the bottom surface of each side plate is an inclined surface, and a connecting pin for hooking the coupler is arranged between the two side plates.
Further, the thrust of the push plate is controlled to be 2-2.2 kN, so that the push rod can be prevented from bending, and the carriage can be pushed to advance; when the length is adjusted, the diameter of the screw rod is not smaller than 30mm, the extending length of the screw rod is not larger than 200mm, and the screw rod can be ensured not to break in the range.
The invention has the beneficial effects that:
(1) When a carriage provided with a chain coupler moves between different stations, the carriage can be connected with a tractor through the coupling device, the tractor is used for traction movement, the carriage is circulated between different stations to replace the defects of the traditional manual cart, and the push-pull dual-purpose function can be realized according to the requirements of users, so that the position between the tractor and the carriage is not required to be adjusted, and the carriage can be realized through the coupling device of the invention whether the carriage runs forwards or backwards;
(2) By arranging the universal mechanism, the angle of the push plate can be arbitrarily adjusted, so that the push plate can be contacted with the surface of the carriage, the stress degree is reduced, and the carriage is prevented from swelling or warping in the pushing process of the push plate;
(3) By arranging the length adjusting mechanism, on one hand, the extension length of the push plate can be adjusted, and the phenomenon that the push plate cannot be propped against a carriage or cannot be tightly propped against the carriage is prevented; on the other hand, the push-pull dual-purpose function can be realized by adjusting the telescopic length of the push plate;
(4) The universal nut is directly welded on the back of the push plate to replace the existing connecting block, so that the cost is reduced, and universal connection can be realized;
(5) The bottom surface of the first connecting part is an inclined surface, so that the chain coupler can be prevented from being separated from the connecting pin due to oscillation generated by ascending and descending slopes;
(6) Through setting up and ally oneself with string main part and first connecting portion swing joint, can reduce the torsional force of car when turning, guarantee to have sufficient degree of freedom to turn between the traction body and the towed body.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention;
fig. 2 is a schematic front perspective view of embodiment 1 of the present invention;
fig. 3 is a schematic diagram of a split structure of a universal nut and a ball joint according to embodiment 1 of the present invention.
The attached drawings are used for identifying and describing:
1. a rectangular connecting pipe; 2. a second connecting portion; 3. a first connection portion; 4. a push rod; 5. a push plate; 6. a movable connection part; 7. a fixed arm; 8. a universal nut; 9. a spherical joint; 21. a coupler mounting plate; 22. a pin hole plate; 23. a first connecting pin; 24. a reinforcing member; 31. a side plate; 32. a ramp; 33. a third connecting pin; 34. a back plate; 41. a reinforcing sleeve; 51. a threaded hole; 61. a connecting plate; 62. a second connecting pin; 71. and a fixing plate.
Detailed Description
The invention will be described in further detail with reference to the drawings and the specific examples.
Example 1
As shown in fig. 1 to 3: the coupling device for the rail transit vehicle comprises a coupling main body, wherein one end of the coupling main body is provided with a first connecting part 3 connected with a towed body, and the other end of the coupling main body is provided with a second connecting part 2 connected with the towed body; two sides of the first connecting part 3 are provided with an epitaxial push rod 4, and the push rod 4 is provided with a push plate 5 for abutting against a towed body; the linking main body is movably connected with the first connecting part.
The scheme has the following advantages: (1) The traction body can push the towed body to move by arranging the push rod and the push plate, and the invention can be used for pushing the carriage to move and pulling the carriage to move according to the use requirement of a user. (2) Through with the articulated main part with first connecting portion swing joint, can reduce the torsional force of car when turning, guarantee to have sufficient degree of freedom to turn between the traction body and the towed body.
In this embodiment, the traction body is a tractor and the towed body is a railcar. The coupling main body comprises a hollow rectangular connecting pipe 1, the second connecting part 2 comprises a coupler mounting plate 21 connected with one end of the rectangular connecting pipe, a pin hole plate 22 which is arranged up and down oppositely is arranged on the coupler mounting plate 21, the pin hole plate 22 is vertically arranged with the coupler mounting plate 21, and a first connecting pin 23 vertically penetrates through a pin hole on the pin hole plate 22 to realize fixed connection. When the second connecting part is connected with the tractor, the coupler on the tractor can be hooked on the first connecting pin 23 and the first connecting pin can be locked through the limiting piece. Wherein a reinforcement 24 is provided between the coupler mounting plate 21 and the rectangular connecting pipe 1.
In this embodiment, the first connecting portion 3 is provided with a movable connecting portion 6 at the end connected with the rectangular connecting tube 1, the movable connecting portion 6 includes a connecting plate 61 which is disposed up and down oppositely, the rectangular connecting tube 1 extends between the upper and lower connecting plates 61, the rectangular connecting tube 1 and the rectangular connecting tube 1 are rotationally connected by passing through the connecting plate 61 and the rectangular connecting tube 1 through a second connecting pin 62, and the second connecting pin 62 is limited by a limiting member to prevent the rectangular connecting tube 1 and the first connecting portion 3 from being pulled out. Wherein, the diameter of the pin hole on the rectangular connecting pipe 1 is larger than the diameter of the second connecting pin 62, so that the rectangular connecting pipe 1 can rotate along the second connecting pin 62 with enough activity, and the rectangular connecting pipe 1 can be prevented from twisting or breaking when the carriage turns.
In this embodiment, the first connecting portion 3 includes two opposite side plates 31, and the bottom surfaces and top surfaces of the two side plates 31 are inclined surfaces, so that the side plates 31 form an irregular pentagonal structure. Wherein the bottom surfaces of the two side plates 31 are connected with a bottom plate and an inclined plate, and the rear side is connected with a back plate 34, so that a first connecting part forms a cavity structure; the bottom surface of the cavity forms a slope 32 by the connection of the bottom plate and the inclined plate. The upper parts of the two side plates 31 are provided with pin holes, a third connecting pin 33 penetrates the pin holes and is limited by a limiting piece, and the third connecting pin 33 is used for connecting a coupler on a train carriage. By providing the ramp 32, the chain coupler is prevented from being separated from the third connecting pin due to oscillation caused by the upward and downward slopes, and when the chain coupler moves downward in a downward slope, the ramp contacts the lower portion of the chain coupler and prevents the chain coupler from continuing downward when the third connecting pin does not move downward in time.
Since the above technology of limiting the connecting pins by the limiting members is already mature, the details are not repeated here.
In this embodiment, two ends of the first connecting portion 3 respectively extend outwards to form fixing arms 7 arranged in mirror images, namely: the fixing arm 7 is screwed or welded to the side plate 31 of the first connection portion by the fixing plate 71. The fixed arm 71 is of a bending structure, one end of the push rod 4 passes through the fixed arm 71 and is fixedly connected with the fixed arm, and a universal mechanism and a length adjusting mechanism are arranged between the other end of the push rod 4 and the push plate. Because the push plate needs to be contacted with the carriage of the train so as to facilitate the carriage to be pushed to move, the inventor finds that if the surface of the carriage is uneven, the surface contact between the carriage and the push plate is changed into line contact, so that the angle of the push plate can be randomly adjusted by arranging the universal mechanism, the surface contact between the push plate and the carriage can be ensured, the stress degree is reduced, and the carriage is prevented from swelling or warping in the pushing process. Through setting up length adjustment mechanism, can adjust the extension length of push pedal, prevent that the push pedal from pushing up not to the carriage, perhaps jack up the phenomenon emergence that the carriage can't compress tightly again.
In the embodiment, the back of the push plate 5 is welded with a universal nut 8, one end of the push rod 4 is connected with a screw rod through threads, a universal joint is arranged on the screw rod, and the universal nut and the universal joint form the universal mechanism; the length adjusting mechanism is formed between the screw rod and the threads of the push rod. The inventor finds that the back of the existing push plate is usually provided with a connecting block, and the universal nut 8 is directly used for replacing the connecting block, so that the cost is reduced, and universal connection can be realized. Wherein the universal joint is a spherical joint 9, and the spherical joint 9 and the screw are welded into a whole; the spherical joint 9 is connected with the universal nut 8 in an adaptation way, the universal nut 8 is in spherical contact with the spherical joint 9, the universal nut has the function of universal adjustment, the fit clearance is 1mm, the universal nut has certain friction resistance, and the universal nut and the spherical joint are not easy to loosen after the angle of adjustment can be ensured.
The screw rod is in threaded connection with the internal thread of the push rod 4, an adjusting nut can be arranged at the joint of the screw rod and the push rod, the length of the screw rod is adjusted by unscrewing the adjusting nut, and the screw rod and the push rod are fixed by screwing the adjusting nut. The thrust of the push plate 5 is controlled to be 2-2.2 kN, so that the push rod 4 can be prevented from bending, and the carriage can be pushed to advance. The diameter of the screw rod is 30mm at minimum, and when the extension length is 200mm at maximum, the screw rod can be ensured not to break. In addition, through setting up length adjustment mechanism, when the tractor changed from pushing the carriage to pulling the carriage and remove, can shrink the push pedal, influence the carriage and remove when preventing that the push pedal from pushing the carriage, also easily lead to the impaired phenomenon of push pedal to take place.
In this embodiment, the push rod 4 is provided with a reinforcing sleeve 41. The inventor finds that in the process that the push plate pushes the carriage, the push rod is easy to push and bend, so that the strength of the push rod is improved by arranging the reinforcing sleeve, the diameter of the push rod can be reduced, the cost is reduced, and the strength of the push rod can be ensured.
The working principle of the embodiment is as follows: the coupler of the tractor is connected with the second connecting part 2 of the coupling device, and the coupler of a carriage of the train is connected with the first connecting part 3 of the coupling device; after connection is completed, the telescopic length of the push plate 5 is adjusted, so that the push plate 5 can press the carriage, the angle between the universal nut 8 and the spherical joint 9 is adjusted according to the flatness of the contact surface of the carriage and the push plate 5, the maximum surface contact between the carriage and the push plate 5 is ensured, the tractor can be started after adjustment is completed, the tractor can push the carriage to move to the target position through the push plate 5, and the carriage can rotate along the second connecting pin 62 through the rectangular connecting pipe 1 during turning, so that the degree of freedom of the carriage is ensured. After the traction is finished, the coupling device can be detached.
Example 2
The difference from embodiment 1 is that the push rod of this embodiment is a piston rod, and the piston rod is connected to a driving cylinder, which may be an electric cylinder, an air cylinder, or the like. The piston rod is driven to stretch and retract through the driving cylinder, so that a length adjusting mechanism is formed; the piston rod is provided with a spherical joint which is connected with a nut of the push plate in an adapting way to form a universal mechanism. The driving cylinders are arranged in two and are fixedly connected with the side plates of the first connecting part through mounting pieces respectively. It can be said that this structure can also realize the length adjustment and the angle adjustment of the push plate, but the structure is more complicated than that of embodiment 1.
Example 3
As shown in fig. 2: the push plate 5 of this embodiment is further provided with a plurality of threaded holes 51 fixedly connected with the carriage by screws. The inventor finds that when the carriage turns, especially when the turning amplitude is large, the situation that two pushing plates cannot press the carriage at the same time occurs, or when the carriage turns, one side of the pushing plate is pressed too tightly, so that the pushing rod is easily broken. Therefore, through directly fixing the push plate on the carriage, even if the carriage turns by a wide margin, two push plates can not break away from the carriage, and in addition, the end of the first connecting part 3 connected with the rectangular connecting pipe is provided with the movable connecting part 6, when turning, the push plate on one side is supposed to be under the condition of being pressed too tightly, and the push plate on the side automatically moves backwards due to the movable connecting part, so that the push plate on the other side is driven to push forwards, thereby adjusting the force of the two push plates, preventing the push rod pressed too tightly from being broken, and greatly prolonging the service life.
In conclusion, the invention has the advantages of simple structure, low cost, energy consumption saving, ensuring the activity during turning of the vehicle and prolonging the service life of the linking device; on the other hand, the device can ensure that a gap does not exist between the push plate and the towed body on the basis of compaction, and ensure that the towed body realizes surface stress rather than line stress, thereby preventing the push plate from swelling or warping the carriage in the pushing process. The invention can push the carriage to move and pull the carriage to move, thereby meeting different requirements and enabling the carriage to run along the track under the traction of the tractor.
Claims (8)
1. The coupling device for the rail transit vehicle comprises a coupling main body, wherein one end of the coupling main body is provided with a first connecting part connected with a towed body, and the other end of the coupling main body is provided with a second connecting part connected with the towed body; the device is characterized in that two sides of the first connecting part are provided with epitaxial push rods, push plates which are used for being abutted with the towed body are arranged on the push rods, and the push plates are contacted with the towed body so as to push the towed body to move; a universal mechanism is arranged between the push rod and the push plate; the back of the push plate is welded with a universal nut, one end of the push rod is connected with a screw rod through threads, a universal joint is arranged on the screw rod, and the universal nut and the universal joint form the universal mechanism; a length adjusting mechanism is further arranged between the push rod and the push plate, and the length adjusting mechanism is formed between the screw rod and the threads of the push rod; by arranging the length adjusting mechanism, when the traction body is pulled to move instead of pushing the traction body, the push plate can be contracted, and the traction body is prevented from being influenced to move when the push plate presses the traction body.
2. The hitch of a rail transit vehicle of claim 1, wherein the universal joint is a ball joint, and the universal nut has a spherical recess capable of mating with the ball joint with a mating clearance of no more than 1mm.
3. The coupling device for rail transit vehicles according to claim 1, wherein the push rod is a piston rod, the piston rod is connected with a driving cylinder, and the piston rod is driven to stretch and retract by the driving cylinder, so that the length adjusting mechanism is formed; and the piston rod is connected with a universal mechanism.
4. The coupling device for rail transit vehicles according to claim 1, wherein the push rod is provided with a reinforcing sleeve; the push plate is provided with a connecting hole which is fixedly connected with the towed body.
5. The coupling device for rail transit vehicles according to claim 1, wherein the first connecting portion is provided with a connecting plate disposed opposite to each other from top to bottom at the end connected to the coupling main body, the coupling main body extends between the upper and lower connecting plates, and the coupling main body is rotatably connected to the first connecting portion by passing through the connecting plate and the coupling main body via a connecting pin.
6. The coupling device for rail transit vehicles according to claim 1, wherein both ends of the first connecting portion extend outwardly respectively to form mirror-image fixed arms, and one end of the push rod passes through the fixed arms and is fixedly connected with the fixed arms; or the two ends of the first connecting part are respectively connected with a driving cylinder, and the driving cylinders are connected with the push plate through piston rods.
7. The coupling device for rail transit vehicles according to claim 5, wherein the first connecting portion comprises two side plates which are arranged oppositely, the top surface and/or the bottom surface of each side plate is an inclined surface, and a connecting pin for hooking a coupler is arranged between the two side plates.
8. The hitch apparatus for rail transit vehicle of claim 1, wherein the thrust of the push plate is controlled to be 2 to 2.2kN; the diameter of the screw rod is not smaller than 30mm, and the extension length of the screw rod is not larger than 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210757334.8A CN115009319B (en) | 2022-06-30 | 2022-06-30 | Coupling device for rail transit vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210757334.8A CN115009319B (en) | 2022-06-30 | 2022-06-30 | Coupling device for rail transit vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115009319A CN115009319A (en) | 2022-09-06 |
| CN115009319B true CN115009319B (en) | 2023-10-27 |
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ID=83078509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210757334.8A Active CN115009319B (en) | 2022-06-30 | 2022-06-30 | Coupling device for rail transit vehicle |
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|---|---|
| CN (1) | CN115009319B (en) |
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| CN115009319A (en) | 2022-09-06 |
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