CN112746730A

CN112746730A - Auxiliary device for rail transit construction

Info

Publication number: CN112746730A
Application number: CN202011564470.2A
Authority: CN
Inventors: 杨昌休; 何帆; 熊伟
Original assignee: Chongqing Vocational College of Transportation
Current assignee: Chongqing Vocational College of Transportation
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-05-04
Anticipated expiration: 2040-12-25
Also published as: CN112746730B

Abstract

The invention relates to the field of rail transit construction, in particular to a rail transit construction auxiliary device which comprises a base, a lifting plate and a lifting mechanism, wherein the lifting mechanism is positioned between the base and the lifting plate, the lifting plate is positioned above the base, guardrail mechanisms are arranged at the inlet and the outlet of the lifting plate, each guardrail mechanism comprises two fixed rods and a plurality of sliding rods positioned between the two fixed rods, the fixed rods and the sliding rods are vertically arranged, the bottoms of the sliding rods are transversely and slidably connected onto the lifting plate, connecting rod assemblies are connected between the adjacent sliding rods, each connecting rod assembly comprises a first connecting rod and a second connecting rod, one end part of each first connecting rod is hinged onto one sliding rod, one end part of each second connecting rod is hinged onto the other sliding rod, and the other end of each first connecting rod is hinged with the other end of the corresponding second. This scheme has improved the security of lifter plate lift in-process.

Description

Auxiliary device for rail transit construction

Technical Field

The invention relates to the field of rail transit construction, in particular to a rail transit construction auxiliary device.

Background

At present, rail transit is a transportation mode with the characteristics of large transportation volume, high speed, safety, punctuality, environmental protection, energy conservation, land occupation and the like, and comprises subways, light rails, fast rails, trams and the like, and the fundamental way for solving the urban traffic problem lies in preferentially developing an urban public transportation system taking rail transit as the backbone.

When the rail transit is built, sometimes a viaduct needs to be built, and the rail is built on the viaduct. Since the viaduct is located at a high distance from the ground, a rail transit construction assisting device is required to transport construction materials on the ground and constructors to the viaduct. Present track traffic construction auxiliary device includes base, lifter plate and elevating system, and elevating system is located between base and the lifter plate, and during the transportation, material and constructor are located the lifter plate, make the lifter plate rise through elevating system to realized transporting the eminence with material or constructor.

However, there is not any guardrail at the entrance of the existing lifting plate, and the lifting plate may be dangerous because the materials or construction personnel on the lifting plate may fall from the entrance of the lifting plate during the lifting process. Even if be provided with the guardrail in lifter plate business turn over department, the setting up of guardrail can influence and hinder upper and lower material and constructor business turn over and go into the lifter plate.

Disclosure of Invention

The invention aims to provide a rail transit construction auxiliary device to improve the safety of a lifting plate in the lifting process.

In order to achieve the purpose, the invention adopts the following technical scheme: track traffic construction auxiliary device, the on-line screen storage device comprises a base, lifter plate and elevating system, elevating system is located between base and the lifter plate, the lifter plate is located the top of base, the entry and exit department of lifter plate is equipped with guardrail mechanism, guardrail mechanism all includes two dead levers and is located a plurality of slide bars between two dead levers, the equal vertical setting of dead lever and slide bar, the horizontal sliding connection in bottom of slide bar is on the lifter plate, all be connected with link assembly between the adjacent slide bar, link assembly includes first connecting rod and second connecting rod, a first connecting rod tip articulates on a slide bar, a tip of second connecting rod articulates on another slide bar, the other end of first connecting rod and the other end of second connecting rod articulate.

The principle and the advantages of the scheme are as follows: the guardrail mechanism is used for blocking the inlet and outlet of the lifting plate, so that materials on the lifting plate and constructors can be prevented from falling from the inlet and outlet of the lifting plate, and the safety of the lifting plate in the lifting process is improved.

Guardrail mechanism in this scheme includes dead lever and slide bar, has realized being connected between the adjacent slide bar through first connecting rod and second connecting rod. One end of the first connecting rod is hinged to one sliding rod, one end of the second connecting rod is hinged to the other sliding rod, and the other end of the first connecting rod is hinged to the other end of the second connecting rod, so that the first connecting rod and the second connecting rod can swing correspondingly, and the first connecting rod and the second connecting rod can adapt to different distances between two adjacent sliding rods. The slide bar can transversely slide from side to side, and through sliding to the slide bar, rotation takes place for first connecting rod and the articulated position of second connecting rod, and a plurality of slide bars are close to each other to make guardrail mechanism shrink together, make the exit of lifter plate opened, the business turn over lifter plate that can go up unloading and constructor this moment. Through the reverse slip to the slide bar, a plurality of slide bars are kept away from each other, can make guardrail mechanism stretch out, and the exit of lifter plate is sheltered from by guardrail mechanism, and material and constructor on the lifter plate can not fall from the exit of lifter plate this moment.

Preferably, as an improvement, the device further comprises a first magnet fixedly arranged on the lifting mechanism and a second magnet fixedly arranged on the viaduct; a pull rod is vertically arranged between the adjacent sliding rods, the pull rod is positioned between the first connecting rod and the second connecting rod, and the hinged parts of the first connecting rod and the second connecting rod are simultaneously hinged on the pull rod; the bottom and the top of the pull rod are respectively and fixedly provided with a third magnet and a fourth magnet, the bottom end of the third magnet and the upper end of the first magnet repel each other, and the top end of the fourth magnet and the bottom end of the second magnet attract each other. From this, when the lifter plate removed the bottommost, the third magnet of pull rod bottom was close to first magnet, and first magnet repels third magnet to make the pull rod receive the repulsion force and upwards move, the pull rod rebound upwards pulls first connecting rod and second connecting rod, the acute angle contained angle between first connecting rod and the second connecting rod diminishes, first connecting rod and second connecting rod pulling slide bar slide each other, make a plurality of slide bars automatic each other be close to, guardrail mechanism contracts and makes the automatic opening in entrance department of lifter plate. Similarly, when the lifter plate moves up to the viaduct, the fourth magnet on the top end of the pull rod is close to the second magnet, the second magnet attracts the fourth magnet to pull the pull rod upwards, the pull rod moves up to pull the first connecting rod and the second connecting rod upwards, so that the sliding rods are automatically close to each other, and the guardrail mechanism contracts to automatically open the inlet and the outlet of the lifter plate. When the lifting plate is lifted, the third magnet is far away from the first magnet, the fourth magnet is far away from the second magnet, the pull rod cannot be subjected to any magnetic force at the moment, the pull rod pulls the first connecting rod and the second connecting rod downwards under the action of gravity, and the first connecting rod and the second connecting rod are in a pushing state for the sliding rods, so that the adjacent sliding rods are in a mutually far away state, and the guardrail mechanism is stretched to enable the inlet and outlet of the lifting plate to be automatically closed.

Therefore, through this scheme, need not to carry out solitary operation to guardrail mechanism, guardrail mechanism can be according to the shift position of lifter plate is automatic flexible, has not only guaranteed the safety of lifter plate, and the operation is still simple and convenient.

Preferably, as an improvement, fixedly connected with wheel carrier on the bottom of base rotates on the wheel carrier and is connected with the wheel, fixedly connected with brake ring on the side of wheel, brake ring protrusion in the side of wheel, fixedly connected with is located the fixed block of base below on the base, rotates on the fixed block and is connected with the brake lever, and the brake block that is located the brake ring is installed to the one end of brake lever, and the side of brake block can offset with the inner wall of brake ring. Therefore, the whole device can conveniently move on the ground by arranging the wheels. The one end of keeping away from the brake block through keeping away from the brake lever promotes, and the brake lever takes place to rotate on the fixed block, and the tip of brake lever drives the inner wall of brake block and brake ring and supports tightly, and the wheel can't rotate under the effect of frictional force between brake ring and brake block like this to realized stopping the wheel, can guarantee that this device can not rock subaerial when using, whole device can not rock, lifter plate can be more safety when lift in-process and go up and down, the unloading.

Preferably, as an improvement, the third magnet and the fourth magnet are both electromagnets; the outside of brake block is equipped with the ejector pad, is connected with the pressure spring between ejector pad and the brake block, and the end that the brake lever is close to the brake block rotates to be connected on the ejector pad, the first conducting block of fixedly connected with on the ejector pad, fixedly connected with second conducting block on the brake block, and first conducting block and second conducting block set up relatively, are connected with the power on the first conducting block, and electric connection third magnet and fourth magnet are gone up to the second conducting block. Therefore, when the brake lever is pushed to be away from one end of the brake block, the other end of the brake lever drives the push block to move, the push block transmits pressure to the brake block through the pressure spring, and the brake block abuts against the inner wall of the brake ring tightly. The ejector pad removes under the promotion of brake lever tip in this scheme, the ejector pad removes and drives first conducting block and removes to being close to the second conducting block direction, only after the ejector pad removes the certain degree, the power that the ejector pad was used in on the brake block this moment is enough big, the wheel is lived by the braking firmly, first conducting block and second conducting block offset simultaneously, third magnet and fourth magnet circular telegram and production magnetism, thereby make the pull rod can remove under the effect of corresponding magnetic force, make guardrail mechanism open the business turn over mouth department of lifter plate. If the distance that the ejector pad removed under the promotion of brake lever tip is less, the power that the ejector pad was used in the brake pad this moment is not very big, the wheel can not firmly by the brake, first conducting block and second conducting block can not counterbalance the contact this moment, third magnet and fourth magnet can not circular telegram and produce magnetism, even if so the lifter plate is located minimum or overpass department, because third magnet and fourth magnet do not have magnetism, the pull rod can not receive magnetic force, thereby make guardrail mechanism can not open the business turn over mouth department of lifter plate. From this, through this scheme, only the wheel is stopped firmly, and the access port of lifter plate just can be opened, has avoided upper and lower unloading and constructor from the lifter plate about the in-process wheel not stopped firmly and be in not hard up state, safety that like this can be more.

In addition, the brake block can be by the wearing and tearing attenuation after having used for a long time, set up first conducting block and second conducting block respectively on ejector pad and the relative side of brake block, first conducting block and second conducting block can not receive the influence of brake block attenuation, after the brake block attenuation, only need promote the dynamics grow of brake lever can, during the contact of first conducting block and second conducting block, the effort that the ejector pad was used on the brake block can not diminish because of the brake block wearing and tearing attenuation, thereby when can guaranteeing that the exit of lifter plate is opened, the brake block can firmly brake the wheel, the stability of wheel brake can not receive the influence of brake block wearing and tearing.

Preferably, as an improvement, be connected with the telescopic link between ejector pad and the brake block, the pressure spring cover is on the telescopic link. Therefore, the compression spring is not deformed and bent when being extruded.

Preferably, as an improvement, vertical sliding connection has the sliding block on the fixed block, and the bottom of sliding block offsets with the one end that the brake block was kept away from to the brake lever, rotates on the base and is connected with the axis of rotation, the bottom and the sliding block threaded connection of axis of rotation, and the top of axis of rotation is fixed to be equipped with rotates the wheel. From this, through rotating the live-rollers, the live-rollers drives the axis of rotation and rotates, and the bottom and the sliding block of axis of rotation form the lead screw pair, and the axis of rotation drives the vertical removal of sliding block, and the sliding block promotes the tip of brake lever, compares and uses manual promotion brake lever, and is more laborsaving.

Preferably, as an improvement, the device further comprises a frame positioned on the viaduct, the second magnet is mounted on the frame, and wheels are arranged on the bottom of the frame. Therefore, the rack can move on the viaduct, so that the position of the second magnet can be conveniently moved on the viaduct to adapt to different transverse positions of the lifting plate.

Drawings

Fig. 1 is a front view of a rail transit construction assisting apparatus.

Fig. 2 is an enlarged view of a in fig. 1.

Fig. 3 is a front view of the upper shelf of the viaduct.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a base 1, a lifting cylinder 2, a transverse plate 3, a first magnet 4, a lifting plate 5, a fixing rod 6, a first connecting rod 7, a pull rod 8, a second connecting rod 9, a sliding rod 10, a wheel carrier 11, a brake ring 12, a brake block 13, a brake lever 14, a fixing block 15, a convex block 16, a sliding block 17, a rotating wheel 18, a rotating shaft 19, a pushing block 20, a first conductive block 21, a second conductive block 22, a telescopic rod 23, a pressure spring 24, a frame 25, a second magnet 26 and an overpass 27.

The embodiment is basically as shown in the attached figures 1-3: track traffic construction auxiliary device, including base 1, lifter plate 5 and elevating system, lifter plate 5 is located base 1's top, and elevating system is lift cylinder 2 in this embodiment, and the bolt fastening is passed through on base 1 to lift cylinder 2's bottom, and lifter plate 5 passes through the bolt fastening on lift cylinder 2's cylinder pole. The lifting plate 5 is of a square structure, guard rails are welded on three sides of the lifting plate 5, the fourth side of the lifting plate 5 is an inlet and an outlet of the lifting plate 5, and a guard rail mechanism is arranged at the inlet and the outlet of the lifting plate 5. Guardrail mechanism includes two dead levers 6 and is located six slide bars 10 between two dead levers 6, and dead lever 6 and the equal vertical setting of slide bar 10, the bottom welding of two dead levers 6 is in the left and right both sides of 5 import departments of lifter plate, and the equal horizontal sliding connection in bottom of slide bar 10 is on lifter plate 5, and specific sliding connection mode is: the bottom of the lifting plate 5 is provided with a transverse sliding groove, the bottom of the sliding rod 10 is welded with a sliding block, the sliding block is positioned in the sliding groove at the bottom of the lifting plate 5, the sliding groove in the embodiment is in a dovetail shape, and the sliding block is positioned in the dovetail-shaped sliding groove, so that the bottom of the sliding rod 10 can be prevented from being upwards separated from the lifting plate 5.

Two connecting rod assemblies are connected between the adjacent sliding rods 10 and between the leftmost sliding rod 10 and the left fixing rod 6, the two connecting rod assemblies are distributed up and down, each connecting rod assembly comprises a first connecting rod 7 and a second connecting rod 9, the first connecting rod 7 is located on the left side of the second connecting rod 9, one end part of the first connecting rod 7 is hinged to the leftmost sliding rod 6 or the left sliding rod 10 of the two adjacent sliding rods 10 through a pin shaft, one end part of the second connecting rod 9 is hinged to the leftmost sliding rod 10 or the sliding rod 10 on the right side of the two adjacent sliding rods 10 through a pin shaft, and the other end of the first connecting rod 7 is hinged to the other end of the second connecting rod 9 through a pin shaft.

All be equipped with the pull rod 8 of vertical setting between left dead lever 6 and the leftmost slide bar 10 and between two adjacent slide bars 10, the articulated position of first connecting rod 7 and second connecting rod 9 articulates simultaneously on pull rod 8, namely first connecting rod 7 and the articulated round pin axle rotation of second connecting rod 9 are on pull rod 8, be equipped with third magnet and fourth magnet through the fix with screw respectively on the bottom of pull rod 8 and the top, third magnet and fourth magnet are the electro-magnet in this embodiment. The outside of the cylinder body of lift cylinder 2 is fixed with diaphragm 3 through the screw, is fixed with a plurality of transversely distributed first magnet 4 through the screw on diaphragm 3, and the magnetism of the top of first magnet 4 and the bottom of third magnet is the same. Referring to fig. 3, the apparatus further includes a rack 25 disposed on the viaduct 27, wherein wheels are disposed on the bottom of the rack 25, so that the rack 25 can move laterally on the viaduct 27, a plurality of second magnets 26 are fixed on the cross beam of the rack 25 by screws, and the bottom ends of the second magnets 26 have opposite magnetic poles to the top ends of the fourth magnets on the top ends of the tie bars 8.

Referring to fig. 1, a wheel frame 11 is welded at the bottom of a base 1, a wheel is rotatably connected to the wheel frame 11 through a wheel shaft, a brake ring 12 is coaxially welded on the outer side surface of the wheel, the brake ring 12 is annular, and the brake ring 12 protrudes out of the outer side surface of the wheel. The welding has two fixed blocks 15 that are located base 1 below on the base 1, all is connected with brake lever 14 through the round pin axle rotation on the fixed block 15, and brake block 13 that is located brake ring 12 is installed to brake lever 14's one end, and the side of brake block 13 can offset with the inner wall of brake ring 12. Referring to fig. 2, the specific installation manner of the brake block 13 and the end of the brake lever 14 is as follows: a push block 20 is arranged below the brake block 13, a pressure spring 24 and an expansion link 23 are connected between the push block 20 and the brake block 13, two ends of the expansion link 23 are respectively fixed on the bottom of the brake block 13 and the upper side surface of the push block 20 through screws, and the pressure spring 24 is sleeved on the expansion link 23. The brake lever 14 is close to the tip of brake block 13 and is connected on ejector pad 20 through the round pin axle rotation, through screw fixedly connected with first conducting block 21 on the last side of ejector pad 20, through screw fixedly connected with second conducting block 22 on the bottom of brake block 13, first conducting block 21 and second conducting block 22 set up relatively, are connected with the power on the first conducting block 21, and second conducting block 22 has third magnet and fourth magnet through wire electric connection. Vertical sliding connection has sliding block 17 on fixed block 15, and is concrete, is equipped with the spout on the fixed block 15, and the side welding of sliding block 17 has the lug 16 that is arranged in the spout. The bottom of the sliding block 17 is abutted to one end, far away from the brake block 13, of the brake lever 14, a rotating shaft 19 is rotatably connected to the base 1 through a bearing, a threaded hole is formed in the top of the sliding block 17, the bottom end of the rotating shaft 19 is in threaded connection with the threaded hole of the sliding block 17, and a rotating wheel 18 is welded to the top end of the rotating shaft 19. A torsion spring for rotationally restoring the brake lever 14 is arranged at the rotationally connected part of the brake lever 14 and the fixed block 15.

The specific implementation process is as follows: the apparatus is pushed to the construction site and the shelf 25 on the overpass 27 is pushed to the corresponding site, with the shelf 25 on the overpass 27 opposing the lift plate 5 below the overpass 27. Then the rotating wheel 18 is rotated manually, the rotating wheel 18 drives the rotating shaft 19 to rotate, the rotating shaft 19 drives the sliding block 17 to move downwards, the sliding block 17 presses the end part of the brake lever 14 downwards, the brake lever 14 swings on the fixed block 15, the torsion spring stores force, the end part of the brake lever 14 close to the brake ring 12 tilts upwards, the end part of the brake lever 14 pushes the push block 20 upwards, and the push block 20 pushes the brake block 13 upwards through the compression spring 24 and the telescopic rod 23, so that the top surface of the brake block 13 is abutted against the inner wall of the brake ring 12. After the push block 20 moves upwards for a certain distance, the push block 20 enables the compression of the pressure spring 24 to reach the limit, the upward thrust force applied to the brake block 13 is relatively large, and the friction force between the brake block 13 and the inner wall of the brake ring 12 is relatively large, so that the wheel is firmly braked. Meanwhile, when the pushing block 20 moves upwards, the first conductive block 21 moves upwards to abut against the second conductive block 22, the first conductive block 21 and the second conductive block 22 are in contact, so that a circuit where the third magnet and the fourth magnet are located is communicated, the third magnet and the fourth magnet are electrified, and the third magnet and the fourth magnet are electrified to generate magnetism.

Like this, when lifter plate 5 when bottommost under the effect of lift cylinder 2, the third magnet of 8 bottoms of pull rods is close to first magnet 4, first magnet 4 repels third magnet, thereby make pull rods 8 receive the repulsion force and upwards move, pull rods 8 upwards move and upwards stimulate first connecting rod 7 and second connecting rod 9, the acute angle contained angle between first connecting rod 7 and the second connecting rod 9 diminishes, first connecting rod 7 and second connecting rod 9 stimulate slide bar 10 and slide each other, make slide bar 10 automatic each other be close to, guardrail mechanism's right-hand member contracts left and makes lifter plate 5's entry and exit department automatic opening. Similarly, when the lifting plate 5 moves upwards to the viaduct 27, the fourth magnet at the top end of the pull rod 8 is close to the second magnet 26 on the viaduct 27 shelf 25, the second magnet 26 attracts the fourth magnet to pull the pull rod 8 upwards, the pull rod 8 moves upwards to pull the first connecting rod 7 and the second connecting rod 9, the sliding rods 10 automatically approach each other under the action of pulling, the right end of the guardrail mechanism moves leftwards to contract, and the inlet and outlet of the lifting plate 5 are automatically opened.

The lifter plate 5 is in the lift in-process, the third magnet leaves first magnet 4 on diaphragm 3 this moment, the fourth magnet leaves second magnet 26 on shelf 25, the third magnet is far away from first magnet 4, the fourth magnet is also far away from second magnet 26, pull rod 8 can not receive any magnetic force this moment, pull rod 8 is in the state of pulling first connecting rod 7 and second connecting rod 9 downwards under the effect of gravity, first connecting rod 7 and second connecting rod 9 are in the state of transversely promoting to slide bar 10 under the effect of pull rod 8 pulling downwards, make adjacent slide bar 10 be in the state of keeping away from each other, thereby make guardrail mechanism's right-hand member stretch out to the right side and make the exit of lifter plate 5 be in the state of automatic closure.

In this embodiment, when the pressing force of the sliding block 17 on the end of the brake lever 14 away from the brake ring 12 is small, the pushing force of the end of the brake lever 14 on the pushing block 20 is small, and at this time, the pressure of the brake block 13 on the inner wall of the brake ring 12 is small, and the wheel is not firmly braked. Simultaneously, because the thrust that ejector pad 20 received is less, ejector pad 20's displacement is less, first conducting block 21 and second conducting block 22 can not contact, the circuit at third magnet and fourth magnet place can not be switched on and produce magnetism like this, thereby even make lifter plate 5 when the highest point or the lowest, the tip of pull rod 8 also can not receive magnetic force and upwards move, the right-hand member of guardrail mechanism can not remove the shrink left like this, the exit of lifter plate 5 still is in the closure state, avoid the wheel not to stop when firm the exit of lifter plate 5 is opened, thereby the security has been guaranteed.

The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. Track traffic construction auxiliary device, including base, lifter plate and elevating system, elevating system is located between base and the lifter plate, and the lifter plate is located the top of base, its characterized in that: the utility model discloses a guardrail device, including lifter plate, guardrail mechanism, dead lever, slide bar, connecting rod and second connecting rod, the entry and exit department of lifter plate is equipped with guardrail mechanism, and guardrail mechanism all includes two dead levers and is located a plurality of slide bars between two dead levers, the equal vertical setting of dead lever and slide bar, the horizontal sliding connection in bottom of slide bar all is connected with link assembly between the adjacent slide bar on the lifter plate, link assembly includes first connecting rod and second connecting rod, a first connecting rod tip articulates on a slide bar, and a tip of second connecting rod articulates on another slide bar, the other end of first connecting rod and the other end of second connecting rod are articulated.

2. The rail transit construction assisting device according to claim 1, characterized in that: the lifting mechanism is fixedly arranged on the viaduct, and the first magnet is fixedly arranged on the lifting mechanism; a pull rod is vertically arranged between the adjacent sliding rods, the pull rod is positioned between the first connecting rod and the second connecting rod, and the hinged parts of the first connecting rod and the second connecting rod are simultaneously hinged on the pull rod; and a third magnet and a fourth magnet are fixedly arranged at the bottom and the top of the pull rod respectively, the bottom end of the third magnet and the upper end of the first magnet repel each other, and the top end of the fourth magnet and the bottom end of the second magnet attract each other.

3. The rail transit construction assisting device according to claim 2, characterized in that: fixedly connected with wheel carrier on the bottom of base rotates on the wheel carrier and is connected with the wheel, fixedly connected with brake ring on the side of wheel, brake ring protrusion in the side of wheel, fixedly connected with is located the fixed block of base below on the base, rotates on the fixed block and is connected with the brake lever, and the brake block that is located the brake ring is installed to the one end of brake lever, and the side of brake block can offset with the inner wall of brake ring.

4. The rail transit construction assisting device according to claim 3, characterized in that: the third magnet and the fourth magnet are both electromagnets; the outside of brake block is equipped with the ejector pad, be connected with the pressure spring between ejector pad and the brake block, the end that the brake lever is close to the brake block rotates to be connected on the ejector pad, the first conducting block of fixedly connected with on the ejector pad, fixedly connected with second conducting block on the brake block, first conducting block and second conducting block set up relatively, are connected with the power on the first conducting block, and electric connection third magnet and fourth magnet are gone up to the second conducting block.

5. The rail transit construction assisting device according to claim 4, characterized in that: and a telescopic rod is connected between the push block and the brake block, and the compression spring is sleeved on the telescopic rod.

6. The rail transit construction assisting device according to claim 3, characterized in that: vertical sliding connection has the sliding block on the fixed block, and the bottom of sliding block offsets with the one end that the brake block was kept away from to the brake lever, rotate on the base and be connected with the axis of rotation, the bottom and the sliding block threaded connection of axis of rotation, the fixed rotation wheel that is equipped with in top of axis of rotation.

7. The rail transit construction assisting device according to claim 2, characterized in that: the magnetic suspension type magnetic suspension bridge is characterized by further comprising a frame located on the viaduct, the second magnet is installed on the frame, and wheels are arranged on the bottom of the frame.