CN214611203U - Rail replacing vehicle - Google Patents

Abstract

The utility model relates to a jack-up transport means technical field discloses a rail replacing car includes two supporting component, crossbeam, hoist and grapple structure, and the crossbeam is connected with two supporting component upper ends, and the hoist setting just removes along the length direction of crossbeam on the crossbeam, and the lower extreme of hoist is equipped with the couple, and the grapple structure can articulate on the couple of hoist to make the hoist drive the grapple structure and reciprocate. So set up, two supporting components span in the rail outside of double track, the hoist removes to the old rail top that needs to be changed and makes the grapple structure grasp old rail along the length direction of crossbeam, it removes along crossbeam length direction to drive old rail, place old rail in one side, the grapple structure blocks new rail, remove the position of new rail, it is new to accomplish, the removal of old rail, it is big to have solved the rail changing process work load when rail changing car changes the rail, the manual work consumes much, lead to the cost of labor height, and it is long when the rail changing process consumes, the problem of inefficiency.

Description

Rail replacing vehicle

Technical Field

The utility model relates to a jack-up transport means technical field, more specifically say, relate to a track rail replacing vehicle.

Background

After the steel rails on various railway tracks in China are subjected to a certain service period, the steel rails are worn and must be replaced so as to ensure the running safety of trains.

At present, the instrument of changing the rail is the rail changing car, and current rail changing car adopts lever principle, and rail changing car bottom has two wheel cards as the fulcrum on the old rail of one side, and lever one end has a grapple to grasp rail upper portion, and after the grapple grasped the rail, the lever other end pushed down with manpower with strength, lifted up the rail of grasping, later removed along the track direction with the rail changing car of artifical promotion clamp-up rail. Because a standard rail is 25 meters long and weighs about 1.5 tons, two rail replacing vehicles (each rail replacing vehicle needs 5 people to operate simultaneously) are needed to clamp two ends of a steel rail and lift up the steel rail simultaneously, wheels clamped on the steel rail are used for moving along the direction of the steel rail, a new steel rail is moved to the side of an old steel rail needing to be replaced, then the old steel rail is moved to an original railway track by manpower, and then the new steel rail is moved to the original railway track by manpower, so that the rail replacing operation is completed.

The rail replacing vehicle used at the present stage is heavy in weight, and generally needs 6-8 persons to carry the rail replacing vehicle, and at least 4 persons are needed to carry out the operation of the rail replacing vehicle during rail replacing operation. Therefore, how to solve the problems of large labor consumption, time and labor waste, high labor cost, long time consumption and low efficiency in the rail replacing process when the rail replacing vehicle in the prior art replaces the steel rail becomes a technical problem which needs to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a when the rail is changed in order to solve the rail changing car among the prior art to the track rail changing car, the artifical consumption of rail changing process is big, wastes time and energy, and the cost of labor is high, the rail changing process is long, the problem of inefficiency when consuming time. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

The utility model provides a track rail replacing vehicle includes:

the number of the supporting assemblies is two;

the two ends of the cross beam are respectively connected with the upper ends of the two supporting components;

the crane is arranged on the cross beam and can move along the length direction of the cross beam, and a hook is arranged at the lower end of the crane;

the grabbing hook structure is used for grabbing a steel rail and can be hung on a hook of the crane, so that the crane drives the grabbing hook structure to move up and down.

Preferably, the supporting component comprises a fixed supporting rod and a movable ejector rod which is arranged inside the fixed supporting rod and can move up and down along the height direction of the fixed supporting rod, and the cross beam is detachably connected with the upper ends of the two movable ejector rods.

Preferably, the fixed support rod and the movable ejector rod are connected through a ball screw, the ball screw comprises a screw rod and a nut matched with the screw rod, the screw rod is rotatably arranged inside the fixed support rod, the nut is fixedly connected with the movable ejector rod so that the nut drives the movable ejector rod to move up and down, the device further comprises a driving device for driving the ball screw to rotate, and the driving device is in transmission connection with the screw rod.

Preferably, the driving device comprises a hand wheel, the hand wheel is rotatably arranged on the fixed support rod, the hand wheel is in transmission connection with the lead screw through a bevel gear pair, the bevel gear pair comprises a driving bevel gear and a driven bevel gear which are meshed with each other, the hand wheel is fixedly connected with the driving bevel gear, and the lead screw is fixedly connected with the driven bevel gear.

Preferably, the supporting component is further provided with a base and two connecting rods, wherein the base is arranged at the lower end of the fixed supporting rod, the two connecting rods are respectively arranged at two sides of the fixed supporting rod, one end of each connecting rod is detachably connected with the base, the other end of each connecting rod is detachably connected with the fixed supporting rod, and the base and the two connecting rods form a triangular supporting frame.

Preferably, each the lower extreme of triangular supports frame all is equipped with two support discs, support the disc include with triangular supports frame lower extreme fixed connection's connecting portion, fixed connection be in connecting portion on the supporting seat and through joint bearing with supporting seat swing joint's chassis.

Preferably, pulleys are arranged at the lower ends of the two fixed support rods, and can be clamped on the steel rail and move along the extending direction of the steel rail.

Preferably, the crossbeam is the I-steel, the hoist includes hoist crane, the couple sets up on the hoist crane, still including being used for the hoist crane provides the portable lithium battery power of electric energy.

Preferably, the grapple structure is for grabbing the rail ware, grab the rail ware and include two upper junction plates, two lower connecting plates and link, two the upper portion of upper junction plate is articulated mutually, two the upper end of lower connecting plate articulates respectively two the lower extreme of upper junction plate, and two lower connecting plate middle part is articulated mutually, two the lower connecting plate lower extreme is equipped with two rail of grabbing hooks that set up relatively respectively, the link sets up two upper junction plate top, and can with the couple cooperatees.

Preferably, a sliding part is embedded in each of the two rail grabbing hooks.

The utility model provides an among the technical scheme, a track rail replacing vehicle includes two supporting component, crossbeam, hoist and grapple structure, and the both ends of crossbeam are connected with two supporting component's upper end respectively, and the hoist setting just can follow the length direction removal of crossbeam on the crossbeam, and the lower extreme of hoist is equipped with the couple, and the grapple structure can articulate on the couple of hoist to make the hoist drive the grapple structure and reciprocate. According to the arrangement, the two supporting assemblies stretch over the outer sides of the steel rails of the double-strand track, the crane is enabled to move to the position above an old steel rail to be replaced along the length direction of the cross beam, the grapple of the grapple structure clamps the steel rail, the crane is started, the crane is controlled to drive the grapple structure to move up and down, so that the steel rail is grabbed, the crane is enabled to move along the length direction of the cross beam, the old steel rail is placed on one side, the grapple structure clamps a new steel rail, the crane is controlled to drive the grapple structure to ascend and move the position of the new steel rail to be installed along the length direction of the cross beam, therefore, the old steel rail is not required to be moved to the original railway track by manpower, the new steel rail is not required to be moved to the original railway track by manpower, rail replacement operation can be completed, manpower is saved, the speed is high, the efficiency is high, and the problem that the workload of the rail replacement process of the rail replacement vehicle in the prior art during replacement of the steel rail replacement is solved, The labor consumption is high, which causes the problems of high labor cost, long time consumption and low efficiency in the rail changing process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a rail replacing vehicle in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a support assembly according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a support disc according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the rail grasping device in the embodiment of the present invention.

In FIGS. 1-4:

1. a support assembly; 101. fixing the support rod; 102. moving the ejector rod; 103. a base; 104. a connecting rod; 2. a cross beam; 3. a crane; 301. hoisting a hoist; 302. hooking; 4. a ball screw; 5. a hand wheel; 6. a bevel gear pair; 601. a drive bevel gear; 602. a driven bevel gear; 7. a support disc; 701. a connecting portion; 702. a supporting seat; 703. a knuckle bearing; 704. a chassis; 8. a pulley; 9. a mobile lithium battery power supply; 10. a rail grabber; 1001. an upper connecting plate; 1002. a lower connecting plate; 1003. hanging a ring; 1004. grabbing a rail hook; 1005. a slider; 11. a power jack; 12. an electric wire; 13. mounting holes; 14. and a bearing seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An object of this embodiment is to provide a rail replacing vehicle, which solves the problems of high labor cost, long time consumption and low efficiency in the rail replacing process caused by large workload and high labor consumption in the rail replacing process when the rail replacing vehicle in the prior art replaces the steel rail.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1-4, in the present embodiment, a rail replacing vehicle includes two supporting components 1, a cross beam 2, a crane 3 and a grapple structure, two ends of the cross beam 2 are respectively connected to upper ends of the two supporting components 1, the crane 3 is disposed on the cross beam 2 and can move along a length direction of the cross beam 2, a hook 302 is disposed at a lower end of the crane 3, the grapple structure is used for grasping a rail, and the grapple structure can be connected to the hook 302 of the crane 3 in a hanging manner, so that the crane 3 drives the grapple structure to move up and down. Alternatively, the grapple configuration may directly use the prior art grapple of a rail replacement car. The rail replacing vehicle adopts a portal frame structure, the overall shape of the rail replacing vehicle is similar to that of a door frame, and it should be noted that the above-mentioned "length direction" of the beam 2 refers to the arrangement state of the beam 2 as shown in fig. 1, namely the "length direction" of the beam 2 from the left end to the right end of the beam 2 in fig. 1. Optionally, the total length of the rail replacing vehicle is 3.2 meters, the height of the rail replacing vehicle is 1.8 meters, the effective distance of the transverse movement of the crane 3 is 2.8 meters, the vertical lifting height of the crane is 1 meter, and the length direction of the rail replacing vehicle is consistent with that of the cross beam 2.

During the use, two supporting component 1 span in the rail outside of double track, hang the grapple structure on the couple 302 of hoist 3, make hoist 3 remove to the top of the old rail that needs to be changed along the length direction of crossbeam 2, use the grapple structure to grasp old rail, start hoist 3, control hoist 3 drives the grapple structure and reciprocates, thereby grab up old rail, then make hoist 3 remove along 2 length direction of crossbeam, place old rail in one side, then make the grapple structure grasp new rail, control hoist 3 drives the grapple structure and rises and remove the position of waiting to install new rail along 2 length direction of crossbeam. When carrying out the change of rail, need not come old rail of translation and new rail with artifical transport, it is new directly to move on the crossbeam through the hoist, the translation of old rail, artifical the consumption is little, when using this device to trade the rail, need two tracks to trade the railcar concurrent operation, add respectively at the rail both ends, lift up simultaneously, every track trade the railcar only need alone operate can, need consume 10 adults and do all can the process of shifting out old rail and translation into new rail with strength simultaneously, the labor is saved, the labor cost is reduced, mechanization trades the rail, for prior art, it is consuming time shorter to trade the rail process, high efficiency. This device makes the operation of trading the rail reduce to 2 people by original 10 people, has saved the cost of labor greatly, through automatic transformation for the time of trading a rail reduces to 20 minutes by 2 hours, and efficiency improves greatly.

So set up, use the track rail replacing car to remove old rail and remove, then remove the new rail and move to original railway track on can accomplish the rail replacement operation, need not use the manpower to remove old rail and move original railway track, also need not the manpower to move new rail to original railway track on, not only use manpower sparingly, time saving and labor saving, it is fast, high efficiency, it is big to have solved rail replacing car among the prior art when changing the rail process work load, the manual work consumes much, lead to the cost of labor height, and it is long when the rail replacing process consumes, the problem of inefficiency.

In a preferred embodiment, the supporting assembly 1 includes a fixed supporting rod 101 and a movable rod 102 disposed inside the fixed supporting rod 101 and capable of moving up and down along the height direction of the fixed supporting rod 101, and the cross beam 2 is detachably connected to the upper ends of the two movable rods 102. Alternatively, the fixed support rod 101 and the movable push rod 102 may be lifted and lowered in a hydraulic manner. Optionally, the upper ends of the cross beam 2 and the two movable push rods 102 may be detachably connected through a snap connection, a slot connection, or a mortise and tenon connection. In this scheme, be equipped with on crossbeam 2 with remove ejector pin 102 upper end complex mounting hole 13, mounting hole 13 can set up squarely, and the whole or upper portion of removal ejector pin 102 is established to square column body this moment, removes in ejector pin 102 top stretches into crossbeam 2's mounting hole 13 to the connection can be dismantled in the realization, in other embodiments, also can set up U font draw-in groove at removal ejector pin 102, place crossbeam 2 and hold up crossbeam 2 in U font draw-in groove. The fixed support rod 101 is made of aluminum alloy, and the support component 1 is made of aluminum alloy.

So set up, during initial condition, the track rail replacing vehicle is in the components of a whole that can function independently state, and occupation of land space is urine to be stored, convenient transport, and the track rail replacing vehicle height is in minimum state, is convenient for install crossbeam 2, and crossbeam 2 weight is heavier, saves artifically, finishes using the back, can make removal ejector pin 102 move down, makes the height of track rail replacing vehicle drop to minimumly, and the dismantlement of crossbeam 2 of being convenient for is saved artifically, has realized the convenient and used removal convenience of back of track rail replacing vehicle installation.

As a preferred embodiment, the fixed support rod 101 and the movable push rod 102 are connected through a ball screw 4, the ball screw 4 includes a screw rod and a nut matched with the screw rod, the screw rod is rotatably disposed inside the fixed support rod 101, the nut is fixedly connected with the movable push rod 102 so that the nut drives the movable push rod 102 to move up and down, and the driving device is further included for driving the ball screw 4 to rotate. The axial direction of the lead screw is consistent with the height direction of the fixed support rod 101, in this scheme, the lead screw of the ball screw 4 is rotatably arranged inside the fixed support rod 101 through the ball screw 4 bearing, preferably, the ball screw 4 bearing can be arranged inside the fixed support rod 101 through the bearing seat. Alternatively, the driving device may be a motor.

So set up, drive arrangement drive ball 4 in the lead screw rotate, make the nut reciprocate along the axial of lead screw to make the nut drive and move ejector pin 102 and remove.

Specifically, as shown in fig. 2, the driving device includes a hand wheel 5, the hand wheel 5 is rotatably disposed on the fixed support rod 101, and the hand wheel 5 and the screw rod are in transmission connection through a bevel gear pair 6. The hand wheel 5 is rotatably arranged on the fixed support rod 101 through a bearing and a bearing seat 14. The hand wheel 5 extends into the fixed support rod 101, a driving bevel gear 601 is fixedly connected to the hand wheel 5, and a driven bevel gear 602 meshed with the driving bevel gear 601 is fixedly connected to the lead screw. As shown in fig. 2, the hand wheel 5 includes a hand-held portion disposed outside the fixed support rod 101 and a central shaft connected to the hand-held portion, one end of the central shaft is connected to the hand-held portion, and the other end of the central shaft extends into the fixed support rod 101.

According to the arrangement, the hand wheel 5 is rotated, the hand wheel 5 drives the driving bevel gear 601 to rotate, the driving bevel gear 601 drives the lead screw to rotate, the nut is made to move up and down, and therefore the moving ejector rod 102 can move up and down.

As a preferred embodiment, the supporting assembly 1 further comprises a base 103 disposed at the lower end of the fixed supporting rod 101 and two connecting rods 104, wherein one end of each of the two connecting rods 104 is detachably connected with the base 103, and the other end is detachably connected with the fixed supporting rod 101, so that the base 103 and the two connecting rods 104 form a triangular supporting frame. And the fixed support rod 101 is located at the center line position of the triangular support frame. The both ends of two connecting rods 104 all are connected with base 103 and fixed support bar 101 through the round pin axle, realize dismantling the connection.

In a preferred embodiment, two supporting disks 7 are disposed at the lower end of each triangular support frame, and each supporting disk 7 comprises a connecting portion 701 fixedly connected with the lower end of the triangular support frame, a supporting seat 702 fixedly connected to the connecting portion 701, and a base plate 704 movably connected with the supporting seat 702 through a joint bearing 703. Specifically, the joint bearing 703 may be a GE40ES joint bearing 703, the connecting part 701 of the support disk 7 may be connected to the lower end of the base 103 by a screw, and the connecting part 701 is provided with a screw of M25.

With the arrangement, the base plate 704 of the supporting disk 7 is connected with the triangular support frame by the movable joint, so that the supporting disk 7 can be kept horizontal on different contact surfaces.

In a preferred embodiment, pulleys 8 are provided at the lower ends of the two fixed support rods 101, and the pulleys 8 can be clamped on the rails and move along the extension direction of the rails. The pulley 8 is fitted to the rail shape and can be moved along the rail direction while being caught on the rail. The pulley 8 is a rail pulley and,

so set up, can both be used for the support when 2 installations of crossbeam through 8 blocks on the orbital rail of two sides of pulley, also can be used for trading the removal of the rail car after having traded one section rail, make the rail move the rail of waiting to change to next section, the removal of the rail car of being convenient for, labour saving and time saving.

In a preferred embodiment, the beam 2 is an i-beam, the crane 3 includes a hoist crane 301, the hook 302 is disposed on the hoist crane 301, and the mobile lithium battery power supply 9 is used for supplying electric energy to the hoist crane 301. The connection and control mode of the hoist crane 301 walking on the i-beam is prior art and is not described in detail. The main power adopts a mobile lithium battery power supply 9, the input power is 3000W, the voltage is 220V, and the hoisting weight is 1 ton. The hoisting block moves left and right on the cross beam 2 through the hoisting block carriage. In other embodiments, the cross beam 2 can be slid by a single rail or a double rail instead. The junction of the beam 2 and the supporting component 1 is provided with a power jack 11 for matching connection with a mobile lithium battery power supply 9, and the mobile lithium battery power supply 9 is connected with the power jack 11 through an electric wire 12.

So set up, innovatively adopt portable lithium battery power supply 9 and hoist 3, provide the automation mechanized operation that the track was changed to the electric energy realization for hoist 3 through portable lithium battery power supply 9, once trade the track and can accomplish by 2 people, reduced artifical use amount greatly, and use portable lithium battery power supply 9 to provide the electric energy for the hoist for the use place of this device is unrestricted.

As a preferred embodiment, the rail grabbing hook structure is a rail grabbing device 10, the rail grabbing device 10 includes two upper connecting plates 1001, two lower connecting plates 1002 and a hanging ring 1003, the upper portions of the two upper connecting plates 1001 are hinged to each other, the upper ends of the two lower connecting plates 1002 are hinged to the lower ends of the two upper connecting plates 1001 respectively, the middle portions of the two lower connecting plates 1002 are hinged to each other, the lower ends of the two lower connecting plates 1002 are provided with two rail grabbing hooks 1004 which are oppositely arranged, and the hanging ring 1003 is arranged above the two upper connecting plates 1001 and can be matched with the hooks 302. Preferably, a sliding member 1005 is embedded in each of the two grabbing rail hooks 1004, and the sliding member 1005 may be a pulley or a bearing, and preferably, in this embodiment, the sliding member 1005 is a bearing.

According to the arrangement, the rail grabbing device 10 is mainly of a hinge type structure, a grabbing hook part of the rail grabbing device 10 is clamped on the upper part of a steel rail, and when the steel rail is lifted, the rail is grabbed through the gravity of the steel rail; the bearing is embedded in the grab hook of the rail grabbing device 10, and the horizontal hoisting of the steel rail can be realized by finely adjusting the position of the steel rail under the condition that the gravity center is unstable after the steel rail is hoisted.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments. The utility model provides a plurality of schemes contain the basic scheme of itself, mutual independence to restrict each other, but it also can combine each other under the condition of not conflicting, reaches a plurality of effects and realizes jointly.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A rail changer, comprising:

the device comprises two support assemblies (1), wherein each support assembly (1) comprises a fixed support rod (101) and a movable ejector rod (102) which is arranged in the fixed support rod (101) and can move up and down along the height direction of the fixed support rod (101);

the two ends of the cross beam (2) are respectively connected with the upper ends of the two supporting components (1);

the crane (3) is arranged on the cross beam (2) and can move along the length direction of the cross beam (2), and a hook (302) is arranged at the lower end of the crane (3);

the grab hook structure is used for grabbing a steel rail and can be hung on a hook (302) of the crane (3) so that the crane (3) drives the grab hook structure to move up and down.

2. The rail-changing vehicle according to claim 1, characterized in that the cross-member (2) is detachably connected to the upper ends of the two moving rams (102).

3. The rail replacing vehicle according to claim 2, wherein the fixed support rod (101) and the movable push rod (102) are connected through a ball screw (4), the ball screw (4) comprises a screw and a nut matched with the screw, the screw is rotatably arranged inside the fixed support rod (101), the nut is fixedly connected with the movable push rod (102) so that the nut drives the movable push rod (102) to move up and down, and the rail replacing vehicle further comprises a driving device for driving the ball screw (4) to rotate, and the driving device is in transmission connection with the ball screw.

4. The rail changing vehicle according to claim 3, wherein the driving device comprises a hand wheel (5), the hand wheel (5) is rotatably arranged on the fixed support rod (101), the hand wheel (5) and the lead screw are in transmission connection through a bevel gear pair (6), the bevel gear pair (6) comprises a driving bevel gear (601) and a driven bevel gear (602) which are meshed with each other, the hand wheel (5) is fixedly connected with the driving bevel gear (601), and the lead screw is fixedly connected with the driven bevel gear (602).

5. The rail replacing vehicle according to claim 2, wherein the supporting assembly (1) further comprises a base (103) and two connecting rods (104) arranged at the lower end of the fixed supporting rod (101), the two connecting rods (104) are respectively arranged at two sides of the fixed supporting rod (101), one end of each connecting rod is detachably connected with the base (103), and the other end of each connecting rod is detachably connected with the fixed supporting rod (101), so that the base (103) and the two connecting rods (104) form a triangular supporting frame.

6. The rail-changing vehicle according to claim 5, characterized in that two supporting discs (7) are provided at the lower end of each triangular support frame, and each supporting disc (7) comprises a connecting part (701) fixedly connected with the lower end of the triangular support frame, a supporting seat (702) fixedly connected with the connecting part (701), and a chassis (704) movably connected with the supporting seat (702) through a joint bearing (703).

7. The rail changer according to claim 2, characterized in that the lower ends of the two fixed support bars (101) are each provided with a pulley (8), and the pulleys (8) can be clamped on the steel rail and move along the extension direction of the steel rail.

8. The rail changer according to claim 1, characterized in that the cross beam (2) is an i-beam, the crane (3) comprises a hoist block (301), the hook (302) is arranged on the hoist block (301), and further comprises a mobile lithium battery power supply (9) for supplying the hoist block (301) with electric energy.

9. The rail replacing vehicle according to claim 1, wherein the rail grabbing hook structure is a rail grabbing device (10), the rail grabbing device (10) comprises two upper connecting plates (1001), two lower connecting plates (1002) and a hanging ring (1003), the upper parts of the two upper connecting plates (1001) are hinged, the upper ends of the two lower connecting plates (1002) are hinged to the lower ends of the two upper connecting plates (1001), the middle parts of the two lower connecting plates (1002) are hinged, the lower ends of the two lower connecting plates (1002) are provided with two rail grabbing hooks (1004) which are oppositely arranged, and the hanging ring (1003) is arranged above the two upper connecting plates (1001) and can be matched with the hooks (302).

10. The rail changer of claim 9, wherein a slider (1005) is embedded in both of the rail-grasping hooks (1004).

Images