CN110936885B

CN110936885B - Maintenance device for rail transit vehicle

Info

Publication number: CN110936885B
Application number: CN201911372776.5A
Authority: CN
Inventors: 刘林阴; 张敏; 李冰; 代传垒
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-01-15
Anticipated expiration: 2039-12-27
Also published as: CN110936885A

Abstract

The invention relates to a maintenance and overhaul device for rail transit vehicles, which effectively solves the problems of inconvenient lifting, low working efficiency and complex operation of the conventional maintenance and overhaul device for rail transit vehicles; the technical scheme includes that the lifting device comprises a vehicle head, the rear end of the vehicle head is connected with a vehicle body, the vehicle body comprises a bottom plate, the vehicle head is connected with the vehicle body through a placing table, a supporting column is fixed at the upper end of the placing table along the vertical direction, a lifting column is arranged in the supporting column in a matched mode through internal threads, so that the lifting column moves along the vertical direction when rotating, a hanging plate extending to the upper end of the bottom plate is rotatably connected to the upper end of the lifting column, and a hook is; the bottom plate is provided with a top rod in a threaded fit and penetrating mode along the vertical direction, the top rod moves along the vertical direction when rotating, and the top rod is connected with the lifting column through a driving connecting device, so that the top rod and the lifting column are synchronously lifted; a towing rope driven by a motor is arranged in the vehicle body, and a towing hook is fixed at the front end of the towing rope; the invention has strong practicability and improves the safety factor and the working efficiency of maintenance personnel.

Description

Maintenance device for rail transit vehicle

Technical Field

The invention relates to the technical field of rail transit vehicles, in particular to a maintenance and overhaul device for a rail transit vehicle.

Background

The rail transit refers to a type of transportation means or transportation system in which an operating vehicle needs to run on a specific rail, common rail transit includes traditional railways, subways, light rails and trams, and in the national standard of urban public transport common noun terminology, urban rail transit is defined as a general term for rapid mass transit which usually takes electric energy as power and adopts a wheel-rail running mode. "

The rail transit vehicle maintenance and repair device mainly aims at the maintenance of small rail transit vehicles in cities, and the rail transit vehicle maintenance and repair device plays an important role in the maintenance and repair process of rail transit vehicles along with the continuous development of times of the rail transit vehicles in the cities, is an auxiliary device for the maintenance and repair of the rail transit vehicles, is inconvenient to lift and lower the conventional rail transit vehicle maintenance and repair device, influences the working efficiency and is complex to operate.

Because its chassis is very close to ground, consequently when the staff overhauls to the chassis of vehicle and maintains, can not maintain at the vehicle bottom like traditional vehicle and overhaul, consequently it is very inconvenient to maintain and overhaul, adopts two kinds of modes usually, firstly adopts the bird to hang, secondly transports the vehicle to the vehicle maintenance station and utilizes the trench to overhaul, and the security that the vehicle bird hung is not high, transports the vehicle to the vehicle maintenance station and utilizes the trench to overhaul then very inconvenient.

Therefore, a maintenance and inspection device for rail transit vehicles is very important.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the rail transit vehicle maintenance and repair device, which effectively solves the problems that the conventional rail transit vehicle maintenance and repair device is inconvenient to lift and lower, the working efficiency is influenced, the operation is complex, and the vehicle is inconvenient to transport to a vehicle maintenance station and is overhauled by using a trench.

The invention comprises a vehicle head, the rear end of the vehicle head is connected with a vehicle body, and the vehicle body is characterized in that the vehicle body comprises a bottom plate fixedly connected with the upper end of a vehicle chassis, the vehicle head is connected with the vehicle body through an object placing table, the upper end of the object placing table is fixedly provided with a support column along the vertical direction, a lifting column is arranged in the support column along the vertical direction in a threaded fit manner, so that the lifting column moves along the vertical direction when rotating, the upper end of the lifting column is rotatably connected with a hanging plate extending to the upper end of the bottom plate, and the lower end of the hanging;

the bottom plate is provided with a top rod in a threaded fit and penetrating mode along the vertical direction, the top rod moves along the vertical direction when rotating, and the top rod is connected with the lifting column through a driving connecting device, so that the top rod and the lifting column are synchronously lifted;

the vehicle body is internally provided with a dragging rope driven by a motor, and the front end of the dragging rope is fixed with a dragging hook.

Preferably, drive connecting device includes the first gear that support column upper end normal running fit set up, first gear and lift post screw-thread fit, first gear with put thing platform normal running fit, make it rotates and vertical direction removal to drive the lift post during first gear rotation, first gear engagement has and puts thing platform normal running fit's second gear, the coaxial first drive shaft that is fixed with extension to lower extreme in the second gear outside, first drive shaft is via driving motor drive.

Preferably, the drive connecting device further comprises a turbine arranged at the lower end of the bottom plate, the turbine is arranged in a matched mode with the bottom plate in a rotating mode, the turbine is sleeved on the outer side of the ejector rod and is arranged in a matched mode with the ejector rod in a threaded mode, the turbine drives the ejector rod to rotate and move in the vertical direction when rotating, and the turbine is meshed with a worm arranged in a matched mode with the bottom plate in the rotating mode.

Preferably, the worm is coaxially fixed with a first bevel gear arranged at the lower end of the object placing table, the first bevel gear is engaged with a second bevel gear, and the second bevel gear is sleeved and fixed on the outer side of the first driving shaft.

Preferably, the lifting column is connected with the hanging plate through the connecting box, the lifting column is arranged in a matched manner with the connecting box in a rotating manner, a lifting channel is formed in the upper end of the connecting box in the vertical direction, an adjusting rod body is arranged in the lifting channel in the vertical direction, the adjusting rod body can adjust the height in the vertical direction, and the upper end of the adjusting rod body is fixedly connected with the hanging plate.

Preferably, the inside wedge-shaped fixture block that all fixes along vertical direction of going up and down the passageway, a plurality of notch have been seted up along vertical direction to the regulation body of rod, the inside equal normal running fit of notch has the jack catch, the jack catch passes through spring fixed connection with the regulation body of rod, the fixture block blocks the jack catch for the regulation body of rod can not move towards the lower extreme.

Preferably, the adjusting rod body is provided with a rope channel penetrating through a plurality of notches in the vertical direction, the upper end of the rope channel penetrates through the upper end of the hanging plate, a rope is arranged in the rope channel, and the rope is fixedly connected with each jaw, so that when the rope is pulled towards the upper end, the jaws are closed and arranged in the notches;

the lifting handle is arranged at the upper end of the lifting plate in a sliding fit mode along the vertical direction, the upper end handle body of the lifting handle is fixedly connected with the lifting plate through a second spring, and the upper end of the rope is fixedly connected with the lifting handle.

Preferably, the left side and the right side of the upper end of the bottom plate are provided with baffle plates in a sliding fit manner along the left-right direction, and a plurality of rubber suckers are fixed on the opposite sides of the two baffle plates;

the lower ends of the two baffle plates penetrate through the bottom plate and are fixed with lower plates, the lower end of the bottom plate is provided with adjusting screw rods in a rotating fit along the width direction, the two lower plates are provided with threaded holes in a penetrating mode along the left and right directions, the adjusting screw rods are in threaded fit with the threaded holes, and the adjusting screw rods are provided with two reverse threads which are in threaded fit with the two threaded holes respectively, so that the two lower plates move towards opposite or opposite directions when the adjusting screw rods rotate.

Preferably, the rear end of the bottom plate is provided with a rear cover plate in a rotating fit mode, the rear cover plate can rotate to be in contact with the ground, and the radian is set at the upper end of the rear cover plate in contact with the ground.

The invention has the advantages of ingenious structure and strong practicability, and the technical scheme has the beneficial effects that:

(1) through the cooperation of hanger plate and lift post for have bigger safety guarantee nature when maintaining the maintenance to the vehicle, great improvement maintainer's factor of safety.

(2) The hanger plate and the lifting column are synchronously lifted, so that the efficiency is higher, and the working efficiency is greatly improved

(3) The device has the versatility for the device can regard as ordinary delivery vehicle, when overhauing need not to deliver to the maintenance station, can directly pass through the cooperation of hanger plate and lift post, makes the maintenance vehicle rise, is convenient for overhaul vehicle chassis, great improvement the efficiency of work.

Drawings

Fig. 1 is a perspective view illustrating a usage state of the present invention.

Fig. 2 is a schematic side view of the present invention in use.

Fig. 3 is a rear view of the present invention in use.

Fig. 4 is a schematic perspective view of the present invention with the baffle removed.

Fig. 5 is a perspective view of the present invention in a use state with the baffle removed.

FIG. 6 is a schematic view of a drive connection apparatus of the present invention.

FIG. 7 is a schematic bottom view of the drive connection apparatus of the present invention.

FIG. 8 is an enlarged view taken at A of FIG. 7 according to the present invention.

FIG. 9 is an enlarged view of the invention at B of FIG. 6.

FIG. 10 is an enlarged view of the invention at C of FIG. 6.

Fig. 11 is a perspective view of the first gear of the present invention.

FIG. 12 is a schematic cross-sectional view of a first gear of the present invention.

Fig. 13 is a schematic cross-sectional view of a junction box of the present invention.

Fig. 14 is a perspective view of the hanger plate of the present invention.

FIG. 15 is a cross-sectional view of the connection box of the present invention in a mated relationship with a hanger plate.

Fig. 16 is an enlarged view at D of fig. 15 according to the present invention.

Fig. 17 is a perspective view of the adjusting screw rod according to the present invention.

Reference numerals: 1. a headstock; 2. a vehicle body; 3. a base plate; 4. a placing table; 5. a placing table; 6. a lifting column; 7. a hanger plate; 8. hooking; 9. a top rod; 11. a first gear; 12. a second gear; 13. a first drive shaft; 14. a turbine; 15. a worm; 16. a first bevel gear; 17. a second bevel gear; 18. a connection box; 19. a lifting channel; 20. adjusting the rod body; 21. a clamping block; 22. a notch; 23. a claw; 24. a spring; 26. A cord channel; 27. a cord; 28. lifting a handle; 28-1, a second spring; 29. a baffle plate; 30. a rubber suction cup; 31. a lower plate; 32. adjusting the screw rod; 34. reverse threads; 35. a tow rope; 36. towing a hook; 37. a back cover plate.

Detailed Description

The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 17. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The invention relates to a maintenance and overhaul device for a rail transit vehicle, which aims at the overhaul of a small rail transit vehicle in a city and comprises a vehicle head 1, wherein the rear end of the vehicle head 1 is connected with a vehicle body 2, the vehicle body 2 comprises a bottom plate 3 fixedly connected with the upper end of a vehicle chassis, referring to fig. 4, the vehicle head 1 is connected with the vehicle body 2 through an object placing table 4, referring to fig. 2, a support column 5 is fixedly arranged at the upper end of the object placing table 4 along the vertical direction, a lifting column 6 is arranged in the support column 5 in a threaded fit manner along the vertical direction, so that the lifting column 6 moves along the vertical direction when rotating, a hanging plate 7 extending to the upper end of the bottom plate 3 is rotatably connected at the upper end of the lifting column 6, when the lifting column 6 rotates and lifts, the hanging plate 7 synchronously lifts with the lifting column 6, and the hanging plate 7 cannot synchronously rotate along with the lifting column 6, referring to fig. 6, a guide rod is arranged at the right side of the lifting column 6 and is in sliding fit with the object placing table 4 along the vertical direction, and a hook 8 is fixed at the lower end of the hanging plate 7, and it should be noted here that even if the guide column is not additionally arranged, when the hook 8 passes through a vehicle with a fixed lower end, the hanging plate 7 cannot synchronously rotate along with the lifting column 6 under the action of gravity, and because the upper ends of some rail transit vehicles do not have a place where the hook can be fixed, the hook 8 and the vehicle to be maintained and detected may need to be connected and fixed by a steel cable at this time;

the bottom plate 3 is provided with a plurality of groups of push rods 9 in a threaded fit and penetrating manner along the vertical direction, the push rods 9 move along the vertical direction when rotating, and for ensuring stability, the number of the push rods 9 is 4, and the push rods 9 and the lifting columns 6 are connected through a driving connecting device, so that the push rods 9 and the lifting columns 6 complete synchronous lifting;

a tow rope 35 driven by a motor is provided inside the vehicle body 2, and a tow hook 36 is fixed to the front end of the tow rope 35.

In the embodiment, when the device is used specifically, there are two use states:

firstly, when the problem of the vehicle waiting for maintenance and detection is serious, the hook 36 to be dragged can be fixed at the front end of the vehicle to be maintained, the vehicle to be maintained is dragged to the upper end of the bottom plate 3 through the butt strap, and the device is only used as a consignment vehicle, and the vehicle to be maintained is transported to a vehicle detection and maintenance station for detection and maintenance.

Secondly, when the problem of the vehicle waiting for maintenance and detection can be maintained on site by a maintenance worker, the hook 36 to be dragged is fixed at the front end of the vehicle to be maintained, the vehicle to be maintained is dragged to the upper end of the bottom plate 3 through the butt strap, and the maintenance worker cannot enter the lower part of the chassis of the vehicle to maintain the vehicle, so that the hook 8 is firmly fixed with the upper end of the vehicle to be maintained, and because the upper ends of some rail transit vehicles do not have a place where the hook can be fixed, the fixed hook 8 and the vehicle to be maintained and detected can be connected through a steel cable at the moment, the lifting plate 7 is lifted through the lifting column 6, the vehicle to be maintained is lifted, and the ejector rod 9 synchronously jacks the vehicle to be maintained at the upper end of the bottom plate 3 at the moment;

due to the double functions of the hanging plate 7 and the ejector rod 9, the safety guarantee is higher when the vehicle is maintained and overhauled, and the safety factor of maintenance personnel is greatly improved; and the hanger plate 7 and the ejector rod 9 are synchronously driven through the driving connecting device, so that the efficiency is greatly improved, and the overall working efficiency of the device is greatly improved.

In the second embodiment, on the basis of the first embodiment, in order to better complete the lifting of the lifting column 6, referring to fig. 6, 9, 11 and 12, the driving connection device includes a first gear 11 disposed at the upper end of the supporting column 5 in a rotating fit manner, the first gear 11 is in a threaded fit with the lifting column 6, the first gear 11 is in a rotating fit with the object placing table 4, since the first gear 11 is limited when rotating, it cannot move in the vertical direction, and then the lifting column 6 rotates, since the lifting column 6 is disposed in a threaded fit with the supporting column 5, the lifting column 6 moves in the vertical direction when rotating, when the first gear 11 rotates, the lifting column 6 is driven to rotate and move in the vertical direction, the first gear 11 is engaged with a second gear 12 rotationally fitted with the object placing table 4, and a first driving shaft 13 extending to the lower end is coaxially fixed outside the second gear 12, first drive shaft 13 is via the driving motor drive, and the driving motor's of here switch can set up in one side of bottom plate 3, also can set up inside locomotive 1, because this moment should avoid appearing lifting column 6 and remove to support column 5 upper end then break away from support column 5, should be provided with the stopper with lifting column 6's lower extreme this moment, and the upper end of support column 5 sets up corresponding spacing, avoids rising breaking away from when reaching the eminence.

This embodiment is when specifically using, at first, when needs rising hanger plate 7, start driving motor, first drive shaft 13 this moment rotates, then drive the synchronous rotation of the coaxial fixed second gear 12 in upper end, rotate with the first gear 11 of second gear 12 meshing this moment, because when first gear 11 rotates, it receives spacingly, can not remove in vertical direction, then make lift post 6 rotate, because lift post 6 sets up with 5 screw-thread fit of support column, so make lift post 6 remove along vertical direction when rotating, when lift post 6 removes in vertical direction, drive hanger plate 7 of upper end and accomplish synchronous lift, then will wait to maintain vehicle at last and hoist.

In a third embodiment, on the basis of the second embodiment, in order to enable the ejector rod 9 to better lift the vehicle to be repaired, referring to fig. 4, 5, 7 and 8, the driving connection device further includes a turbine 14 disposed at the lower end of the bottom plate 3, the turbine 14 is disposed in a rotationally matched manner with the bottom plate 3, the turbine 14 is sleeved outside the ejector rod 9 and disposed in a threaded fit with the ejector rod 9, so that the turbine 14 drives the ejector rod 9 to rotate and move in the vertical direction when rotating, and the turbine 14 is engaged with a worm 15 disposed in a rotationally matched manner with the bottom plate 3;

this embodiment is when specifically using, at first, transport the vehicle to the upper end of bottom plate 3, the vehicle at this moment arranges the upper end of ejector pin 9 in, then rotate through drive worm 15, then accomplish synchronous rotation with worm 15 meshed turbine 14, because when turbine 14 rotates, it receives spacingly, can not remove in vertical direction, then make ejector pin 9 rotate, because ejector pin 9 and bottom plate 3 screw-thread fit set up, so make ejector pin 9 remove along vertical direction when rotating, then jack-up the vehicle of upper end, make the lower extreme of vehicle appear sufficient space, a service person maintains the vehicle and detects.

In the fourth embodiment, on the basis of the third embodiment, in order to enable the hanger plate 7 and the lift rod 9 to complete synchronous lifting and further greatly improve the efficiency of the device, please refer to fig. 6, 7, 8 and 10, the worm 15 is coaxially fixed with a first bevel gear 16 disposed at the lower end of the object placing table 4, the first bevel gear 16 is engaged with a second bevel gear 17, and the second bevel gear 17 is sleeved and fixed outside the first driving shaft 13;

when the embodiment is used specifically, firstly, the vehicle is conveyed to the upper end of the bottom plate 3, the vehicle is arranged at the upper end of the ejector rod 9 at the moment, the hook 8 is firmly fixed with the upper end of the vehicle to be maintained at the moment, because the upper ends of some rail transit vehicles do not have a place where the hook can be fixed, the hook 8 and the vehicle to be maintained and detected can be connected and fixed by a steel cable at the moment, the driving motor is started, the first driving shaft 13 at the moment rotates to drive the second gear 12 with the coaxially fixed upper end to synchronously rotate, the first gear 11 meshed with the second gear 12 rotates at the moment, because the first gear 11 rotates, the first gear is limited and cannot move in the vertical direction, the lifting column 6 rotates, because the lifting column 6 is arranged in threaded fit with the support column 5, the lifting column 6 moves in the vertical direction when rotating, when the lifting column 6 moves in the vertical direction, the lifting plate 7 at the upper end is driven to complete synchronous lifting, and then the vehicle to be maintained is lifted finally;

going on with it in step, first drive shaft 13 drives coaxial fixed second bevel gear 17 and rotates, when second bevel gear 17 rotates, drive the first bevel gear 16 of meshing and rotate, first bevel gear 16 drives worm 15 and rotates this moment, then rotate through drive worm 15, then accomplish synchronous rotation with worm 15 meshed turbine 14, because when turbine 14 rotates, it receives spacingly, can not remove in vertical direction, then make ejector pin 9 rotate, because ejector pin 9 sets up with 3 screw-thread fit of bottom plate, so make ejector pin 9 remove along vertical direction when rotating, then jack-up the vehicle of upper end, make the lower extreme of vehicle appear sufficient space, be used for the maintenance personal to the vehicle maintenance detection.

Fifth embodiment, on the basis of the first embodiment, since different heights of the vehicles to be maintained may be different, when the height from the hanger plate 7 to the bottom plate 3 is lower than that of the vehicle to be maintained, the maintenance device may not work normally, and to solve this problem, please refer to fig. 4, 14, 15, and 16, the lifting column 6 and the hanger plate 7 are connected via a connection box 18, the connection box 18 is used for adjustment, so that the distance from the initial state of the hanger plate 7 to the bottom plate 3 can be adjusted, the lifting column 6 and the connection box 18 are disposed in a rotationally matched manner, a lifting channel 19 is formed in the upper end of the connection box 18 along the vertical direction, an adjustment rod body 20 is disposed in the lifting channel 19 along the vertical direction, the adjustment rod body 20 can adjust the height along the vertical direction, and the upper end of the adjustment rod body 20 is fixedly connected to the hanger plate 7.

Sixth embodiment, on the basis of the fifth embodiment, in order to adjust the distance from the initial state of the hanger plate 7 to the bottom plate 3 through the vehicle to be maintained, please refer to fig. 4, 14, 15 and 16, the front end of the hanger plate 7 is arc-shaped, wedge-shaped fixture blocks 21 are fixedly arranged inside the lifting channel 19 along the vertical direction, a plurality of notches 22 are formed in the adjusting rod body 20 along the vertical direction, a jaw 23 is rotatably matched inside each notch 22, the jaw 23 is fixedly connected with the adjusting rod body 20 through a spring 24, and the jaw 23 is clamped by the fixture blocks 21, so that the adjusting rod body 20 cannot move towards the lower end;

when the vehicle lifting device is used specifically, firstly, in the process of dragging a vehicle to be maintained to the upper end of the bottom plate 3, the radian surface of the front end of the vehicle contacts the radian surface of the hanging plate 7, at the moment, the hanging plate 7 is extruded to move towards the upper end, and as the front end of the hanging plate 7 is in contact with the vehicle and is extruded, in order to avoid damage to the vehicle, the radian surface of the hanging plate 7 can be made of rubber;

when hanger plate 7 is extruded towards the upper end, adjust the body of rod 20 and remove towards the upper end, accomplish the regulation then, when couple 8 with wait to maintain the vehicle fixed, even hanger plate 7 receives the gravity towards the lower extreme, the fixture block 21 of this moment blocks jack catch 23 for adjust the body of rod 20 can not remove towards the lower extreme.

Seventh embodiment, on the basis of the sixth embodiment, after the device is used, the device needs to be restored, please refer to fig. 15, the adjusting rod body 20 is provided with a wire channel 26 penetrating through the plurality of notches 22 along the vertical direction, the upper end of the wire channel 26 penetrates through the upper end of the hanger plate 7, a wire 27 is arranged inside the wire channel 26, and the wire 27 is fixedly connected with each of the jaws 23, so that when the wire 27 is pulled towards the upper end, the jaws 23 are closed and placed inside the notches 22;

a lifting handle 28 is arranged at the upper end of the hanging plate 7 in a sliding fit manner along the vertical direction, a handle body at the upper end of the lifting handle 28 is fixedly connected with the hanging plate 7 through a second spring 28-1, and the upper end of the wire rope 27 is fixedly connected with the lifting handle 28

When the embodiment is used specifically, firstly, when the hanger plate 7 needs to be restored to the initial state, the lifting handle 28 is pulled towards the upper end; however, at this time, the clamping block 21 clamps the clamping jaw 23, so that the cord 27 cannot be pulled, the hanger plate 7 needs to be moved by a certain amount beyond the upper end, the clamping jaw 23 is separated from the clamping of the clamping block 21, at this time, the lifting handle 28 only needs to be pulled towards the upper end, the cord 27 is pulled, at this time, the second spring 28-1 is compressed, the cord 27 can be easily pulled, at this time, the clamping jaw 23 is placed in the notch 22, and the hanger plate 7 can be restored to the initial state.

In an eighth embodiment, on the basis of the first embodiment, in order to avoid the shaking of the vehicle to be maintained at the upper end of the bottom plate 3, please refer to fig. 1, fig. 2, fig. 3 and fig. 17, the left side and the right side of the upper end of the bottom plate 3 are respectively provided with a baffle 29 in a sliding fit manner along the left-right direction, and a plurality of rubber suckers 30 are fixed on the opposite sides of the two baffles 29;

the lower ends of the two baffles 29 penetrate through the bottom plate 3 to be fixed with lower plates 31, the lower end of the bottom plate 3 is provided with an adjusting screw rod 32 which is in running fit along the width direction, the two lower plates 31 are both provided with threaded holes in a running-through manner along the left and right direction, the adjusting screw rod 32 is in thread fit with the threaded holes, and the adjusting screw rod 32 is provided with two reverse threads 34 which are respectively in thread fit with the two threaded holes, so that when the adjusting screw rod 32 rotates, the two lower plates 31 move towards opposite or opposite directions;

when the automobile lifting device is used specifically, a vehicle to be maintained is firstly conveyed to a specified position, then the position where the vehicle is located is determined by adjusting the lifting plate 7 and the ejector rod 9, the adjusting screw rod 32 is rotated at the moment, the end part of the adjusting screw rod 32 is extended to the outer side of the bottom plate 3 and is fixed with a rotating handle, at the moment, under the matching action of the reverse threads 34, the two lower plates 31 move towards the middle position, then the vehicle to be maintained is clamped, and the rubber suction cups 30 at the moment are compressed, so that the clamping is firmer.

In a ninth embodiment, on the basis of the first embodiment, in order to make it more convenient to transport the vehicle to be maintained to the bottom plate 3, please refer to fig. 1 and 2, a rear cover plate 37 is rotatably fitted at the rear end of the bottom plate 3, the rear cover plate 37 can be rotated to contact with the ground, and the upper end of the rear cover plate 37 contacting with the ground is set to be a radian, which makes it more convenient to transport the vehicle to be maintained to the bottom plate 3.

When the invention is used specifically, the invention has two use states:

firstly, when the problem of a vehicle to be maintained and detected is serious, the hook 36 to be dragged can be fixed at the front end of the vehicle to be maintained, the vehicle to be maintained is dragged to the upper end of the bottom plate 3 through the rear cover plate 37, in the process of dragging the vehicle to be maintained to the upper end of the bottom plate 3, the radian surface of the front end of the vehicle contacts the radian surface of the hanging plate 7, the hanging plate 7 is extruded to move towards the upper end, and the radian surface of the hanging plate 7 can be set to be made of rubber materials in order to avoid damaging the vehicle due to the fact that the front end of the hanging plate 7 is in contact with the vehicle;

when hanger plate 7 is extruded towards the upper end, the adjusting rod body 20 moves towards the upper end, then accomplishes the regulation, when couple 8 with wait to maintain the vehicle fixed, even hanger plate 7 receives the gravity towards the lower extreme, fixture block 21 this moment blocks jack catch 23 for adjusting rod body 20 can not move towards the lower extreme, and the device this moment only is as the delivery vehicle, will wait that the vehicle of maintenance transports to vehicle detection maintenance station and detects the maintenance.

Secondly, when the vehicle problem waiting for maintenance and detection can be maintained on site by a maintenance worker, the hook 36 to be dragged is fixed at the front end of the vehicle to be maintained, the vehicle to be maintained is dragged to the upper end of the bottom plate 3 through the rear cover plate 37, in the process of dragging the vehicle to be maintained to the upper end of the bottom plate 3, the radian surface of the front end of the vehicle contacts the radian surface of the hanging plate 7, the hanging plate 7 is extruded to move towards the upper end, and the radian surface of the hanging plate 7 can be set to be made of rubber materials in order to avoid damaging the vehicle due to the fact that the front end of the hanging plate 7 is extruded by the contact with the vehicle;

when the hanger plate 7 is extruded towards the upper end, the adjusting rod body 20 moves towards the upper end, then adjustment is completed, and when the hook 8 is fixed with the vehicle to be maintained, even if the hanger plate 7 receives gravity towards the lower end, the clamping block 21 clamps the clamping jaw 23 at the moment, so that the adjusting rod body 20 cannot move towards the lower end;

because the chassis of the rail transit vehicle to be maintained is lower, maintenance personnel can not enter the lower part of the chassis of the vehicle to maintain the vehicle, the hook 8 is firmly fixed with the upper end of the vehicle to be maintained, and because the upper ends of some rail transit vehicles do not have a place where the hook can be fixed, the hook 8 and the vehicle to be maintained and detected can be connected and fixed by a steel cable;

the driving motor is started, the first driving shaft 13 rotates at the moment, and then the second gear 12 with the coaxially fixed upper end is driven to synchronously rotate, the first gear 11 meshed with the second gear 12 rotates at the moment, the first gear 11 is limited and cannot move in the vertical direction when rotating, and then the lifting column 6 rotates, the lifting column 6 moves in the vertical direction when rotating due to the fact that the lifting column 6 is in threaded fit with the supporting column 5, and when the lifting column 6 moves in the vertical direction, the lifting plate 7 at the upper end is driven to synchronously lift, so that the vehicle to be maintained is finally lifted;

Finally, the hanging plate 7 is used for hanging the vehicle to be maintained, and the push rod 9 synchronously pushes up the vehicle to be maintained at the upper end of the bottom plate 3;

after the vehicle to be maintained is conveyed to a specified position, the adjusting screw rod 32 is rotated at the moment, the end part of the adjusting screw rod 32 is extended to the outer side of the bottom plate 3 and is fixed with a rotating handle, at the moment, under the matching action of the reverse threads 34, the two lower plates 31 move towards the middle position, and then the vehicle to be maintained is clamped, and at the moment, the rubber suction cups 30 are compressed, so that the clamping is firmer;

Claims

1. A rail transit vehicle maintenance and overhaul device comprises a vehicle head (1), wherein the rear end of the vehicle head (1) is connected with a vehicle body (2), and the rail transit vehicle maintenance and overhaul device is characterized in that the vehicle body (2) comprises a bottom plate (3) fixedly connected with the upper end of a vehicle chassis, the vehicle head (1) is connected with the vehicle body (2) through an object placing table (4), a supporting column (5) is fixed at the upper end of the object placing table (4) along the vertical direction, a lifting column (6) is arranged in the supporting column (5) in a threaded fit manner along the vertical direction, the lifting column (6) moves along the vertical direction when rotating, a hanging plate (7) extending to the upper end of the bottom plate (3) is rotatably connected to the upper end of the lifting column (6), and a hook (8) is fixed;

the bottom plate (3) is provided with a push rod (9) in a penetrating manner in a threaded fit manner along the vertical direction, the push rod (9) moves along the vertical direction when rotating, and the push rod (9) is connected with the lifting column (6) through a driving connecting device, so that the push rod (9) and the lifting column (6) are synchronously lifted;

a dragging rope (35) driven by a motor is arranged in the vehicle body (2), and a dragging hook (36) is fixed at the front end of the dragging rope (35).

2. The rail transit vehicle maintenance and repair device according to claim 1, wherein the driving connection device comprises a first gear (11) rotatably fitted on the upper end of the supporting column (5), the first gear (11) is in threaded fit with the lifting column (6), the first gear (11) is rotatably fitted with the object placing table (4), so that the lifting column (6) is driven to rotate and move in the vertical direction when the first gear (11) rotates, the first gear (11) is engaged with a second gear (12) rotatably fitted with the object placing table (4), a first driving shaft (13) extending to the lower end is coaxially fixed on the outer side of the second gear (12), and the first driving shaft (13) is driven by a driving motor.

3. The rail transit vehicle maintenance and repair device according to claim 2, wherein the driving connection device further comprises a turbine (14) arranged at the lower end of the bottom plate (3), the turbine (14) is arranged in a rotating fit with the bottom plate (3), the turbine (14) is sleeved outside the ejector rod (9) and is arranged in a threaded fit with the ejector rod (9), so that the turbine (14) drives the ejector rod (9) to rotate and move in the vertical direction when rotating, and the turbine (14) is meshed with a worm (15) arranged in a rotating fit with the bottom plate (3).

4. The maintenance and repair device for the rail transit vehicle as claimed in claim 3, wherein the worm (15) is coaxially fixed with a first bevel gear (16) arranged at the lower end of the object placing table (4), the first bevel gear (16) is engaged with a second bevel gear (17), and the second bevel gear (17) is sleeved and fixed at the outer side of the first driving shaft (13).

5. The rail transit vehicle maintenance and repair device according to claim 1, wherein the lifting column (6) is connected with the hanging plate (7) through a connecting box (18), the lifting column (6) is arranged in a rotating fit with the connecting box (18), a lifting channel (19) is formed in the upper end of the connecting box (18) along the vertical direction, an adjusting rod body (20) is arranged in the lifting channel (19) along the vertical direction, the height of the adjusting rod body (20) can be adjusted along the vertical direction, and the upper end of the adjusting rod body (20) is fixedly connected with the hanging plate (7).

6. The rail transit vehicle maintenance and repair device according to claim 5, wherein wedge-shaped fixture blocks (21) are fixedly arranged inside the lifting channel (19) along the vertical direction, a plurality of notches (22) are formed in the adjusting rod body (20) along the vertical direction, a jaw (23) is rotatably matched inside each notch (22), each jaw (23) is fixedly connected with the adjusting rod body (20) through a spring (24), and each fixture block (21) is used for clamping each jaw (23), so that the adjusting rod body (20) cannot move towards the lower end.

7. The rail transit vehicle maintenance and repair device according to claim 6, wherein the adjusting rod body (20) is vertically provided with a wire channel (26) penetrating through a plurality of notches (22), the upper end of the wire channel (26) is arranged through the upper end of the hanger plate (7), a wire (27) is arranged inside the wire channel (26), and the wire (27) is fixedly connected with each jaw (23) so that when the wire (27) is pulled towards the upper end, the jaws (23) are closed and arranged inside the notches (22);

the lifting handle (28) is arranged at the upper end of the hanging plate (7) in a sliding fit mode along the vertical direction, a handle body at the upper end of the lifting handle (28) is fixedly connected with the hanging plate (7) through a second spring (28-1), and the upper end of the wire rope (27) is fixedly connected with the lifting handle (28).

8. The rail transit vehicle maintenance and repair device according to claim 1, wherein baffles (29) are arranged on the left side and the right side of the upper end of the bottom plate (3) in a sliding fit manner along the left-right direction, and a plurality of rubber suction cups (30) are fixed on the opposite sides of the two baffles (29);

two baffle (29) lower extreme pierces through bottom plate (3) and is fixed with hypoplastron (31), bottom plate (3) lower extreme is provided with accommodate the lead screw (32) along width direction normal running fit, two hypoplastron (31) all runs through along left right direction and sets up threaded hole, accommodate the lead screw (32) and screw hole screw-thread fit set up, be provided with on accommodate the lead screw (32) two respectively with two screw hole screw-thread fit's reverse screw thread (34) for when accommodate the lead screw (32) rotated, two hypoplastrons (31) moved towards opposite or opposite direction.

9. The rail transit vehicle maintenance and repair device according to claim 1, wherein a rear cover plate (37) is rotatably fitted to the rear end of the base plate (3), the rear cover plate (37) is rotatable to contact with the ground, and the upper end of the rear cover plate (37) when contacting with the ground is set to be a radian.