CN210948692U - Rail type trolley - Google Patents

Abstract

The utility model discloses a rail-mounted trolley, which comprises a mounting rack, wherein at least one lifting frame is arranged on the left side and the right side of the mounting rack in a sliding manner along the vertical direction, a lifting device for driving the lifting frame to lift is arranged at the top of the lifting frame, a supporting platform is arranged on the top of the lifting frame in a sliding manner along the horizontal direction towards the tunnel wall, and an extension device for driving the supporting platform to slide is also arranged at the top of the lifting frame; rail moving devices sliding along the rails are symmetrically arranged on two sides of the bottom of the mounting rack, and emergency stopping devices used for clamping the rails are further arranged on one sides of the rail moving devices; the utility model discloses have the region that can adapt to not co-altitude and different width in the tunnel and carry out convenient construction, simultaneously when the unstability automatic locking stop, effectively guarantee the beneficial effect of the safety of staff and equipment.

Description

Rail type trolley

Technical Field

The utility model belongs to the technical field of tunnel construction device, concretely relates to rail mounted platform truck.

Background

The tunnel is the indispensable facility that supplies the train to pass the mountain mountains, and the tunnel includes the side of both sides and the hunch portion at top, just needs to carry out construction operations such as lining cutting, waterproof to the side and the hunch portion in the tunnel construction process, generally through set up the platform truck in the tunnel, and constructor constructs the side and the hunch portion of tunnel through standing on the construction platform of platform truck. But the height and the width in different tunnels are different, and the staff also need be under construction in the tunnel in region of co-altitude not and the region of co-altitude not, and the height and the width of the construction platform of traditional platform truck are all fixed, obviously can not satisfy the regional convenient construction requirement of co-altitude not and co-width. Meanwhile, the traditional trolley is fixed through the support legs, and once the support legs fail, the trolley can move automatically, so that the equipment and workers on the trolley are damaged. The defect that can not in time park when can not adapt to not co-altitude and different width regions to traditional platform truck and carry out convenient construction, stabilizer blade inefficacy, the utility model discloses a rail mounted platform truck.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rail mounted platform truck realizes not co-altitude in the adaptation tunnel and the convenient regulation of the regional height that carries out work platform of different width and extension width, realizes that the staff carries out convenient construction in co-altitude and different width regions, can in time park when the stabilizer blade of platform truck self became invalid simultaneously, effectively guarantees the safety of staff and equipment.

The utility model discloses a following technical scheme realizes:

a rail type trolley comprises an installation frame, wherein at least one lifting frame is arranged on the left side and the right side of the installation frame in a sliding mode along the vertical direction, a lifting device for driving the lifting frame to lift is arranged at the top of the lifting frame, a supporting platform is arranged on the top of the lifting frame in a sliding mode along the horizontal direction towards the tunnel wall, and an extending device for driving the supporting platform to slide is further arranged at the top of the lifting frame; the rail moving device capable of sliding along the rail is symmetrically arranged on two sides of the bottom of the mounting frame, and an emergency stopping device used for clamping the rail is further arranged on one side of the rail moving device.

The working principle is as follows:

the left side and the right side of the installation rack are respectively provided with at least one lifting rack along the arrangement direction in an independent sliding mode, and the number and the installation height of the lifting racks are determined according to the actual tunnel height. The crane is in the lower part position of mounting bracket one side at ordinary times, is provided with the supporting platform along the horizontal direction slidable mounting towards the tunnel wall on the crane, and supporting platform provides the plane of standing for the staff, and the staff can stand and carry out the construction operation in the tunnel on supporting platform. Corresponding to different construction positions in the tunnel, the lifting frame and the supporting platform are driven by the lifting device to lift in the vertical direction, and then the height of the supporting platform is adjusted, so that workers standing on the supporting platform can adapt to different heights in the tunnel to carry out convenient operation. Simultaneously, to the different width regions in tunnel, drive supporting platform through extending device and slide along the horizontal direction towards the tunnel wall on the crane, lie in left supporting platform promptly and slide to the left side along the horizontal direction in order to be close the tunnel wall, lie in the supporting platform on right side and slide to the right side along the horizontal direction in order to be close the tunnel wall, and then make the staff of standing on supporting platform can adapt to the tunnel width and carry out the construction operation. The supporting platform is driven by the lifting device and the stretching device to realize position adjustment in the vertical direction and the horizontal direction, so that workers standing on the supporting platform can conveniently touch construction areas with different heights and widths in the tunnel, and the construction efficiency is greatly improved. Simultaneously, the track mobile device that the mounting bracket bottom set up can drive whole mounting bracket and all the other parts on it and carry out convenient removal along the track. Simultaneously, the bottom at the mounting bracket corresponds the track and is provided with emergency stop device, and when the mounting bracket took place the drunkenness along the track, emergency stop device pressed from both sides the track tightly at once this moment, and then realized the fixed to all the other components on mounting bracket and the mounting bracket, avoided the staff to drop from supporting platform.

In order to better realize the utility model, the emergency stop device further comprises friction plates, friction heads, a connecting seat and a hydraulic sleeve, wherein the friction plates are arranged on two sides of the track in parallel, and friction grooves parallel to the track are arranged on the friction plates; the connecting seat is arranged at the bottom of the mounting frame corresponding to the rail, two sides of the connecting seat are respectively provided with a hydraulic sleeve corresponding to the friction grooves on the two sides, and the hydraulic sleeves extend into the friction grooves; the hydraulic sleeve is characterized in that a hydraulic cavity is formed in the hydraulic sleeve, piston cavities communicated with the hydraulic cavity are formed in the upper side wall and the lower side wall of the hydraulic sleeve, which correspond to the friction grooves, respectively, and friction heads are arranged in the piston cavities in a sliding mode.

At ordinary times, the friction head positioned in the piston cavity is in a retraction state, the friction end of the friction head is not in contact with the upper side wall and the lower side wall of the friction plate, and the mounting frame can move along the track at the moment. When the mounting bracket slides to the construction area, the whole mounting bracket is generally fixed through the support legs on two sides of the bottom of the mounting bracket, but when the support legs are out of work or have faults, the mounting bracket can continue to move along the track, and further the rest of components on the mounting bracket are damaged or workers fall off from the support platform to be injured. At this moment, the mounting frame needs to be stopped emergently, an external hydraulic station injects hydraulic oil into a hydraulic cavity inside the hydraulic sleeve through a hydraulic pipeline, the pressure of the hydraulic oil further drives the friction head to extend out along the piston cavity towards the upper side wall or the lower side wall close to the friction groove until the friction end of the friction head contacts with the upper side wall or the lower side wall of the friction groove, and the friction end of the friction head rubs with the upper side wall or the lower side wall of the friction groove to further stop the mounting frame.

In order to better realize the utility model discloses, furtherly, the one end that the friction head is close to the lateral wall of friction groove is provided with the friction disc.

For better realization the utility model discloses, furtherly, extension device includes that the owner extends the hydro-cylinder, extends the slide rail, extends the slider, the owner extends the hydro-cylinder along the horizontal direction setting at the top of crane towards tunnel wall, the main both sides parallel symmetry that extends the hydro-cylinder is provided with and extends the slide rail, there is supporting platform through extending slider slidable mounting on extending the slide rail, the supporting platform bottom is close to the one end of mounting bracket and is connected with the main flexible end that extends the hydro-cylinder.

In order to better realize the utility model discloses, furtherly, still include the supplementary hydro-cylinder that extends, the supplementary hydro-cylinder that extends sets up in the bottom of crane, and the stiff end of supplementary hydro-cylinder that extends is articulated with the side of mounting bracket, and the flexible end of supplementary hydro-cylinder that extends is articulated with the other end of supporting platform bottom.

In order to better realize the utility model, the lifting device further comprises a winch, a lifting slide rail and a lifting slide block, the lifting slide rail is arranged at two sides of the mounting rack along the vertical direction, the lifting slide block is arranged on the lifting slide rail in a sliding way, and one side of the lifting slide block, which is far away from the mounting rack, is connected with one side of the lifting rack; the winding machine is arranged on the top of the mounting frame, and the winding end of a winding rope of the winding machine is connected with the top of the lifting frame.

For better realization the utility model discloses, furtherly, one side parallel arrangement of lift slide rail has the guide post, be provided with on the crane with guide post sliding connection's uide bushing.

In order to better realize the utility model discloses, furtherly, the opposite side parallel arrangement of lift slide rail has the lockplate, the linearity is provided with a plurality of locking holes on the lockplate, the crane is provided with the locking journal stirrup on being close to one side of lockplate, the locking hole that corresponds on the lockplate on the locking journal stirrup is provided with sub-locking hole.

For better realization the utility model discloses, further, the top of mounting bracket is provided with the top platform.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the utility model discloses a set up elevating gear along vertical direction in the left and right sides of mounting bracket to drive crane and the support platform at crane top through elevating gear and go up and down along vertical direction, and then make the staff who stands on support platform can carry out convenient construction in the different high regions in the tunnel;

(2) the utility model arranges the supporting platform on the lifting frame along the horizontal direction towards the tunnel wall, and drives the supporting platform to slide towards the direction close to the tunnel wall through the stretching device, so that the working human sample standing on the supporting platform can be conveniently constructed in different width areas in the tunnel;

(3) the utility model discloses a corresponding track in the bottom of mounting bracket sets up emergency stop device, when the fixed landing leg for use originally on the mounting bracket became invalid, through filling into hydraulic oil in the hydraulic pressure seat to emergency stop device, and then make the friction head stretch out along the piston chamber of hydraulic pressure seat and with the friction groove on the friction plate go up side or downside contact friction, and then make the mounting bracket stop fixed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of the track moving device and the emergency stop device;

fig. 3 is a partially enlarged schematic view of the emergency stop device;

FIG. 4 is a schematic view of the stretching device;

FIG. 5 is a schematic structural view of the lifting device;

FIG. 6 is a schematic view of the connection between the guide post and the crane;

fig. 7 is a schematic view of the connection of the locking plate and the crane.

Wherein: 1-a mounting frame; 2, a lifting frame; 3-supporting the platform; 4-a stretching device; 5-a rail moving device; 6-emergency stop means; 7-a lifting device; 8-a top platform; 41-main extension oil cylinder; 42-auxiliary stretching oil cylinder; 43-extending the slide rail; 44-extending the slide; 51-a roller; 52-axle; 53-drive the reduction unit; 54-a support base; 61-a friction plate; 62-a friction head; 63-a connecting seat; 64-a hydraulic seat; 71-a winch; 72-lifting slide rails; 73-lifting slide block; 74-guide post; 75-a guide seat; 76-locking plate; 77-locking lugs; 01-friction groove; 02-hydraulic cavity; 03-piston chamber.

Detailed Description

Example 1:

the rail-mounted trolley of the embodiment comprises an installation frame 1, wherein at least one lifting frame 2 is arranged on the left side and the right side of the installation frame 1 in a sliding manner along the vertical direction, a lifting device 7 for driving the lifting frame 2 to lift is arranged at the top of the lifting frame 2, a supporting platform 3 is arranged at the top of the lifting frame 2 in a sliding manner along the horizontal direction facing the tunnel wall, and an extending device 4 for driving the supporting platform 3 to slide is further arranged at the top of the lifting frame 2; the two sides of the bottom of the mounting rack 1 are symmetrically provided with track moving devices 5 sliding along a track, and one side of each track moving device 5 is also provided with an emergency stopping device 6 used for clamping the track; the top of the mounting frame 1 is provided with a top platform 8.

The top construction area that the top of mounting bracket 1 corresponds to is provided with top platform 8, and the left and right sides wall that the left and right sides of mounting bracket 1 corresponds the tunnel respectively slides along vertical direction and is provided with crane 2, slides along the horizontal direction on crane 2 and is provided with the supporting platform 3 that supplies the staff to stand. In order to make the staff can adapt to the not region of co-altitude in the tunnel and carry out work, drive crane 2 and supporting platform 3 through elevating gear 7 and remove along vertical direction, and then adjust crane 2 and supporting platform 3's height for the staff can carry out work in the not co-altitude region in the tunnel.

In order to make the staff can adapt to the region of the different width of left and right sides in the tunnel and carry out work, drive supporting platform 3 through stretching device 4 and remove towards the tunnel wall at the top of crane 2 along the horizontal direction, it corresponds left side tunnel wall to be located 1 left supporting platform 3 of mounting bracket, left stretching device 4 drives left supporting platform 3 and removes towards left tunnel wall, the same is said, stretching device 4 on right side drives supporting platform 3 on right side and removes towards the tunnel wall on right side, make the staff of standing on supporting platform 3 can carry out work in the different width region of left and right sides in the tunnel.

Through the mutual cooperation of lifting device 7 and extension fixture 4, can realize the regulation to the height or the width in supporting platform 3 place region, and then make the staff of standing on supporting platform 3 can adapt to different regions in the tunnel and carry out work.

Simultaneously, it is provided with track mobile device 5 to correspond two tracks respectively in the both sides of mounting bracket 1 bottom, track mobile device 5 is used for driving mounting bracket 1 and removes along the track, and the both sides of the bottom of mounting bracket 1 correspond two tracks still and are provided with emergency stop device 6 simultaneously, when mounting bracket 1 can not effectively be fixed in the landing leg trouble originally of mounting bracket 1, press from both sides the track through emergency stop device 6 and press from both sides tightly, and then realize fixing the quick stop of mounting bracket 1, effectively guarantee equipment and personnel's safety on mounting bracket 1.

Further, for the convenience of staff's climbing up supporting platform 3, be provided with the staircase that supplies the staff to climb in one side of supporting platform 3, be provided with the rail along the edge on supporting platform 3 simultaneously, avoid the staff to drop from supporting platform 3.

Example 2:

the embodiment is further optimized on the basis of embodiment 1, as shown in fig. 1 to 3, the emergency stop device 6 includes friction plates 61, friction heads 62, a connecting seat 63, and a hydraulic sleeve 64, the friction plates 61 are disposed in parallel on two sides of the rail, and the friction plates 61 are provided with friction grooves 01 parallel to the rail; the connecting seat 63 is installed at the bottom of the mounting frame 1 corresponding to the rail, hydraulic sleeves 64 are respectively arranged on two sides of the connecting seat 63 corresponding to the friction grooves 01 on the two sides, and the hydraulic sleeves 64 extend into the friction grooves 01; the hydraulic sleeve 64 is internally provided with a hydraulic cavity 02, the upper side and the lower side of the hydraulic sleeve 64 are respectively provided with a piston cavity 03 corresponding to the upper side wall and the lower side wall of the friction groove 01 and communicated with the hydraulic cavity 02, and a friction head 62 is arranged in the piston cavity 03 in a sliding manner.

The emergency stop device 6 is installed at one side of the rail moving device 5 corresponding to the rail, and the friction head 62 slidably disposed in the piston chamber of the hydraulic sleeve 64 is normally in a retracted state in which the friction end of the friction head 62 is not in contact with the upper or lower side wall of the friction groove 01 of the friction plate 61, and the mounting bracket 1 can move along the rail. When the mounting bracket 1 needs to be fixed and the original supporting legs for fixing are failed, hydraulic oil is filled into the hydraulic cavity 02 of the hydraulic sleeve 64 through a hydraulic pipeline through an external hydraulic station arranged on the mounting bracket 1, the hydraulic oil enters the piston cavity 03 and then drives the friction head 62 to extend out along the piston cavity 03 until the friction end of the friction head 62 contacts with the upper side wall or the lower side wall of the friction groove 01 and rubs with each other, and the mounting bracket is stopped by the instantly applied great friction force. The friction plate 61 and the friction head 62 are arranged for friction instead of the friction head 62 directly rubbing the track, so that the service life of the track is effectively prolonged. The top end of connecting seat 63 is fixedly mounted at the bottom of mounting bracket 1 through a bolt, and the bottom end of connecting seat 63 is connected with hydraulic sleeve 64 through a connecting flange.

Further, in order to avoid the friction plate 61 and the friction head 62 from directly rubbing to cause the loss of the friction head 62, the friction end of the friction head 62 is covered with a friction plate, the mounting frame 1 is emergently stopped by the friction of the upper side wall or the lower side wall of the friction plate and the friction groove 01, and after the friction plate is worn, only the friction plate needs to be replaced, so that the operation cost is effectively reduced.

As shown in fig. 2, the rail moving device 5 includes a roller 51, a wheel shaft 52, a driving reducer unit 53, and a support 54, the support 54 is mounted at the bottom of the mounting frame 1 corresponding to the rail through a bolt, the wheel shaft 52 is rotatably mounted on the support 54 through a bearing, the roller 51 is sleeved on the wheel shaft 52, and a rim of the roller 51 is in rolling contact with a top surface of the rail. Meanwhile, the bottom of the supporting seat 54 is also provided with a driving speed reducer unit 53 through a bolt, and the driving end of the driving speed reducer unit 53 is in transmission connection with the wheel shaft 52. The wheel shaft 52 is driven to rotate by driving the speed reducer unit 53, so that the roller 51 is driven to rotate, and the mounting seat 1 can conveniently move along the rail by relative rolling between the roller 51 and the rail.

Other parts of this embodiment are the same as embodiment 1, and thus are not described again.

Example 3:

this embodiment is further optimized on the basis of above-mentioned embodiment 1 or 2, as shown in fig. 4, the stretching device 4 includes a main stretching cylinder 41, a stretching slide rail 43, and a stretching slider 44, the main stretching cylinder 41 is disposed on the top of the crane 2 along the horizontal direction toward the tunnel wall, the two sides of the main stretching cylinder 41 are symmetrically provided with stretching slide rails 43, a supporting platform 3 is slidably mounted on the stretching slide rails 43 through the stretching slider 44, and one end of the bottom of the supporting platform 3, which is close to the mounting rack 1, is connected with the telescopic end of the main stretching cylinder 41.

The two sides of the top of the lifting frame 2 are provided with extension slide rails 43 in parallel alignment along the horizontal direction towards the tunnel wall, extension slide blocks 44 are arranged on the extension slide rails 43 in a sliding mode, the top of each extension slide block 44 is connected with the bottom of the supporting platform 3 through a mounting bolt, and the supporting platform 3 slides towards the tunnel wall on the lifting frame 2 through sliding fit between the extension slide blocks 44 and the extension slide rails 43.

The main stretching oil cylinders 41 are arranged between the two stretching slide rails 43 in parallel, the fixed ends of the main stretching oil cylinders 41 are connected with one ends, close to the mounting rack 1, of the tops of the lifting frames 2, the stretching ends of the main stretching oil cylinders 41 are hinged to the bottom of the supporting platform 3, piston cavities of the main stretching oil cylinders 41 are connected with an external hydraulic station through hydraulic pipelines, and the external hydraulic station is arranged on the mounting rack 1 and supplies hydraulic oil to the main stretching oil cylinders 41. The main stretching oil cylinder 41 is in a retracting state when the stretching end is flat, and when workers need to be close to the tunnel wall, the main stretching oil cylinder 41 stretches out towards the tunnel wall, so that the supporting platform 3 is driven to slide towards the tunnel wall, and the workers can approach the tunnel wall.

The bottom of crane 2 still is provided with supplementary hydro-cylinder 42 that extends, and the stiff end of supplementary hydro-cylinder 42 that extends is articulated with the side of mounting bracket 1, and the flexible end of mounting bracket 1 is articulated with the bottom of the one end that supporting platform 3 kept away from mounting bracket 1, and when crane 2 goes up and down, the flexible end correspondence of supplementary hydro-cylinder 42 that extends is flexible and is accompanied crane 2 with supplementary supporting platform 3 and rise in step. When the supporting platform 3 extends towards the tunnel wall, the one end of the supporting platform 3 far away from the mounting rack 1 is in a cantilever state, the auxiliary supporting oil cylinder 42 is matched with the main extending oil cylinder 41 to stretch, the one end of the supporting platform 3 far away from the mounting rack 1 is supported, and the stability of the supporting platform 3 in the extending process is effectively guaranteed.

The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.

Example 4:

the embodiment is further optimized on the basis of any one of the above embodiments 1 to 3, as shown in fig. 5 to 7, the lifting device 7 includes a winch 71, a lifting slide rail 72 and a lifting slide block 73, the lifting slide rail 72 is vertically disposed on two sides of the mounting rack 1, the lifting slide block 73 is slidably disposed on the lifting slide rail 72, and one side of the lifting slide block 73 away from the mounting rack 1 is connected to one side of the lifting rack 2; the winch 71 is arranged at the top of the mounting frame 1, and the winch end of the winch rope of the winch 71 is connected with the top of the lifting frame 2.

Drive the hoist rope through hoist engine 71 and go up and down, and then drive crane 2 and the supporting platform 3 at crane 2 top along vertical direction lift, in order to guarantee the stability when crane 2 goes up and down, hang at the other end of hoist rope and be equipped with the balancing weight, balancing weight and mounting bracket 1's side sliding connection.

Meanwhile, a guide post 74 is arranged on one side of the lifting slide rail 72 in parallel, a guide sleeve 75 connected with the guide post 74 in a sliding manner is arranged on the lifting frame 2, and when the lifting frame 2 is lifted, the guide sleeve 75 also slides along the guide post 74 in the vertical direction, so that the lifting guide of the lifting frame 2 is realized.

Further, a locking plate 76 is arranged on the other side of the lifting slide rail 72 in parallel, a plurality of locking holes are linearly formed in the locking plate 76, a locking support lug 77 is arranged on one side, close to the locking plate 76, of the lifting frame 2, and sub-locking holes are formed in the locking support lug 77 and correspond to the locking holes in the locking plate 76. The distance between the adjacent locking holes is 20cm-50cm, the height of each locking hole corresponds to the working height of the lifting frame 2, when the lifting frame 2 is lifted to the position that the sub-locking holes in the locking support lugs 77 are aligned with the locking holes in the locking plates 76, the locking bolts are inserted into the locking holes and the sub-locking holes, the height of the lifting frame 2 is locked, even if the lifting device 71 breaks down, the lifting frame 2 cannot fall down due to the locking of the locking bolts to the lifting frame 2, and the safety of workers is effectively guaranteed.

Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims (9)

1. The rail type trolley comprises an installation rack (1) and is characterized in that at least one lifting frame (2) is arranged on the left side and the right side of the installation rack (1) in a sliding mode along the vertical direction, a lifting device (7) for driving the lifting frame (2) to lift is arranged at the top of the lifting frame (2), a supporting platform (3) is arranged at the top of the lifting frame (2) in a sliding mode along the horizontal direction towards the tunnel wall, and a stretching device (4) for driving the supporting platform (3) to slide is further arranged at the top of the lifting frame (2); the track moving device is characterized in that track moving devices (5) sliding along a track are symmetrically arranged on two sides of the bottom of the mounting rack (1), and emergency stopping devices (6) used for clamping the track are further arranged on one side of each track moving device (5).

2. The rail-mounted trolley as claimed in claim 1, wherein the emergency stop device (6) comprises a friction plate (61), a friction head (62), a connecting seat (63) and a hydraulic sleeve (64), the friction plate (61) is arranged on two sides of the rail in parallel, and a friction groove (01) parallel to the rail is arranged on the friction plate (61); the connecting seat (63) is installed at the bottom of the mounting frame (1) corresponding to the rail, hydraulic sleeves (64) are arranged on two sides of the connecting seat (63) corresponding to the friction grooves (01) on the two sides respectively, and the hydraulic sleeves (64) extend into the friction grooves (01); the hydraulic sleeve is characterized in that a hydraulic cavity (02) is formed in the hydraulic sleeve (64), the upper side and the lower side of the hydraulic sleeve (64) are respectively provided with a piston cavity (03) communicated with the hydraulic cavity (02) corresponding to the upper side wall and the lower side wall of the friction groove (01), and a friction head (62) is arranged in the piston cavity (03) in a sliding mode.

3. A rail trolley as claimed in claim 2, characterized in that the friction head (62) is provided with friction plates at the end of the side wall near the friction groove (01).

4. The rail-mounted trolley as claimed in any one of claims 1 to 3, wherein the stretching device (4) comprises a main stretching oil cylinder (41), a stretching slide rail (43) and a stretching slide block (44), the main stretching oil cylinder (41) is arranged at the top of the lifting frame (2) along the horizontal direction towards the tunnel wall, the stretching slide rail (43) is symmetrically arranged on two sides of the main stretching oil cylinder (41) in parallel, a supporting platform (3) is slidably mounted on the stretching slide rail (43) through the stretching slide block (44), and one end of the bottom of the supporting platform (3) close to the mounting frame (1) is connected with the stretching end of the main stretching oil cylinder (41).

5. The rail-mounted trolley as claimed in claim 4, further comprising an auxiliary stretching oil cylinder (42), wherein the auxiliary stretching oil cylinder (42) is arranged at the bottom of the lifting frame (2), the fixed end of the auxiliary stretching oil cylinder (42) is hinged to the side face of the mounting frame (1), and the telescopic end of the auxiliary stretching oil cylinder (42) is hinged to the other end of the bottom of the supporting platform (3).

6. A rail-mounted trolley as claimed in any one of claims 1 to 3, characterized in that the lifting device (7) comprises a winch (71), a lifting slide rail (72) and a lifting slide block (73), the lifting slide rail (72) is arranged on both sides of the mounting rack (1) along the vertical direction, the lifting slide block (73) is arranged on the lifting slide rail (72) in a sliding manner, and one side of the lifting slide block (73) far away from the mounting rack (1) is connected with one side of the lifting rack (2); the hoisting machine (71) is arranged at the top of the mounting rack (1), and the hoisting end of a hoisting rope of the hoisting machine (71) is connected with the top of the lifting rack (2).

7. A rail-mounted trolley as claimed in claim 6, characterized in that one side of the lifting slide rail (72) is provided with a guide post (74) in parallel, and the lifting frame (2) is provided with a guide sleeve (75) connected with the guide post (74) in a sliding manner.

8. The rail-mounted trolley as claimed in claim 6, wherein a locking plate (76) is arranged in parallel on the other side of the lifting slide rail (72), a plurality of locking holes are linearly arranged on the locking plate (76), a locking support lug (77) is arranged on one side of the lifting frame (2) close to the locking plate (76), and a sub-locking hole is arranged on the locking support lug (77) corresponding to the locking hole on the locking plate (76).

9. A rail trolley as claimed in claim 1, characterized in that the top of the mounting frame (1) is provided with a top platform (8).

Images