CN218643807U - A expanded construction platform for aerial work - Google Patents

Abstract

The utility model belongs to the technical field of the construction equipment, a but expanded construction platform for eminence operation is disclosed, including base, fixed plate, construction station board, the both sides of construction station board are passed through movable block and notch sliding connection, and the one end and the fixed plate of construction station board slip cup joint, and the pneumatic cylinder is installed to the bottom of fixed plate, and the bottom of pneumatic cylinder is connected with the lifter plate, and one side of lifter plate articulates there is the sloping block, and sloping block one end is articulated with the movable block. The utility model discloses a pneumatic cylinder drives the lifter plate and shifts up, can expand constructor's home range to constructor's home range has been enlarged, makes constructor need not to remove this construction support and just can carry out construction on a large scale, has improved constructor's operating efficiency.

Description

A expanded construction platform for aerial work

Technical Field

The utility model relates to a building construction equipment technical field, concretely relates to an extensible construction platform for aerial work.

Background

The building construction refers to the production activities in the engineering construction implementation stage, and is the construction process of various buildings, and related constructors often need to use various tool equipment in the construction process, and the construction support is one of important tools.

At present, a construction support is often needed to be used by a construction worker in the operation process, so that high-altitude construction operation can be met, in the actual use process of the existing construction support, when the construction worker stands on the construction support for operation, the construction area which can be implemented by the construction worker is limited, namely, the construction range of the maximum limited area exists, if the adjacent area exceeds the construction range of the maximum area, the construction worker can only get off the construction support, and the construction support is moved to reach the adjacent area to continue construction operation, so that the adjustment of the construction range from top to bottom affects the working efficiency of the construction worker, and the labor intensity of the construction worker is increased, so that the improvement and optimization of the construction support are needed.

SUMMERY OF THE UTILITY MODEL

To the technical problem among the prior art, the utility model provides an expandable construction platform for eminence operation, including base, fixed plate, two construction station boards, the gyro wheel is all installed to the front and back of the bottom both sides of base, the equal fixed mounting in top both sides of base has the mount, two fixed mounting has the fixed plate, two between the mount the notch that link up is seted up to the side of mount, two the both sides of construction station board are passed through movable block and notch sliding connection, two construction station board symmetry sets up the both ends at the fixed plate, the one end and the fixed plate slip of construction station board cup joint, the bottom fixed mounting of fixed plate has the pneumatic cylinder, the flexible fixedly connected with lifter plate in bottom of pneumatic cylinder, one side of lifter plate articulates and is connected with the sloping block, two the sloping block sets up about the lifter plate symmetry, two the one end that the lifter plate was kept away from to the sloping block is articulated with the movable block, two the construction station board carries on the back mutually or moves in opposite directions under the drive of lifter plate and sloping block.

Preferably, an expandable construction platform for high place operation still includes perpendicular piece, montant, motion board, under casing and movable box, two erect piece fixed mounting in the bottom of fixed plate, and the symmetry sets up the both sides at the pneumatic cylinder, motion board sealing slide mounting is in the montant, the top fixed connection of montant one end and lifter plate, the other end run through perpendicular piece and inside motion board fixed connection, the top fixed mounting of base has the under casing, the under casing is located the lifter plate, two fixed casees with the under casing intercommunication are installed at the top of under casing, two fixed case symmetry sets up the both sides at the lifter plate, the top of perpendicular piece is passed through the connecting pipe and is communicated with the fixed case with one side, the internally mounted that the base is close to the bottom has the movable box, the under casing passes through first coupling mechanism and movable box intercommunication, the bottom of movable box has a supporting box through telescopic tube connection, just the inside and the supporting box of telescopic tube intercommunication movable box, and the initial time, the bottom surface of supporting box is higher than the gyro wheel, erect the piece and be located the top space of motion board, connecting pipe, fixed box and movable box are located the below of first coupling mechanism and all fill in the bottom.

Preferably, the inside of the supporting box is hermetically and slidably connected with two moving blocks, the two moving blocks are symmetrically arranged relative to the center of the supporting box, one side, far away from the center of the supporting box, of each moving block is fixedly connected with a hollow pipe, one end, far away from the moving blocks, of each hollow pipe penetrates through the supporting box and extends to a supporting plate fixedly connected with the outside of the supporting box, the end part of each hollow pipe is communicated with the corresponding moving box through the corresponding supporting box, and the hollow pipe is filled with hydraulic oil.

Preferably, a rigid spring is sleeved outside the hollow tube, and two ends of the rigid spring are fixedly connected with the inner wall of the supporting box and the moving block respectively.

Preferably, the first connecting mechanism comprises a first moving block, a connecting rod and a second moving block, the first moving block is arranged inside the movable box in a sealing and sliding mode and located above hydraulic oil, the second moving block is arranged in the bottom box in a sealing and sliding mode, one end of the connecting rod is fixedly connected with the first moving block, and the other end of the connecting rod penetrates through the movable box, the base and the bottom box in sequence and is fixedly connected with the second moving block.

Preferably, the first connecting mechanism further comprises a flexible spring, the flexible spring is sleeved outside the connecting rod, and two ends of the flexible spring are fixedly connected with the bottom of the second moving block and the bottom of the inner cavity of the bottom box respectively.

Preferably, fixed fences are fixedly mounted on two sides of the top of the fixed plate, one end of each movable fence is sleeved on the corresponding fixed fence along the inner portion of the sliding direction of the construction station plate, and the other end of each movable fence extends to the outer portion of the corresponding fixed fence and the bottom end of the corresponding movable fence is fixedly connected with the top of the construction station plate.

Preferably, a crawling ladder is fixedly mounted on one side of the fixing plate and located on one side, far away from the inclined block, of the lifting plate.

Has the beneficial effects that:

1. the utility model discloses a set up the construction station board, the pneumatic cylinder, lifter plate and sloping block, because the operation of pneumatic cylinder, will make lifter plate upward movement, two sloping blocks will promote the movable block and slide along the notch this moment, thereby make two construction station board back of the body motions, and then make the construction station board can supply the area that the constructor stood to obtain effectual extension, at this moment also can enlarge the scope of construction at construction station board top, make constructor need not to remove this construction support and just can carry out construction on a large scale, constructor's operating efficiency has been improved.

2. The utility model discloses a setting of riser block, the montant, the motion board, the connecting pipe, the under casing, the fixed box, first coupling mechanism and movable box, can drive the motion board upward movement through the montant when the lifter plate shifts up, can make the hydraulic oil inside the riser block be extruded by the motion board and get into the inside of connecting pipe and flow into in the fixed box, then get into the inside of under casing by the fixed box, promote first coupling mechanism, and promote the hydraulic oil inside the movable box to get into the inside of supporting box through first coupling mechanism, make flexible pipe stretching drive the supporting box and move down, the bottom of final supporting box contacts with ground, the gyro wheel is unsettled this moment, thereby reach effective support fixed effect; the arrangement of the two moving blocks, the hollow pipe and the supporting plate is combined, so that the contact area between the supporting box and the ground can be increased, the supporting stability of the whole construction support is improved, specifically, after the hydraulic oil in the moving box enters the supporting box, the hydraulic oil in the hollow pipe can be extruded, and the two supporting plates are driven by the hydraulic oil to move back to back and slide out of the supporting box; the automatic reset effect of the supporting plate can be realized by combining the arrangement of the rigid spring.

3. The utility model discloses a setting of first motion piece, connecting rod, second motion piece can utilize the hydraulic oil promotion second connecting block of fixed incasement to move down to drive connecting rod and first motion piece and move down in step, and then convenient quick the inside hydraulic oil extrusion entering supporting box of activity incasement portion, combine flexible spring's setting, can realize the automatic re-setting of first motion piece and second motion piece fast when the lifter plate resumes initial position.

4. The utility model can ensure the construction safety and reduce the occurrence of safety accidents by arranging the fixed fences and the movable fences, particularly when two construction station plates move back to back, the tail ends of the two movable fences can also move in the two fixed fences, thereby being suitable for the movement length of the two construction station plates; through the setting of cat ladder, can make things convenient for constructor's upper and lower.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

fig. 2 is a schematic view of the back structure of the present invention;

FIG. 3 is a sectional view of the installation structure of the construction station plate and the fixing plate of the present invention;

FIG. 4 is a front half-sectional view of the present invention;

fig. 5 is a schematic view of the installation of the bottom structure of the present invention;

fig. 6 is a schematic view of the side half-section structure of the utility model.

In the figure: 1. a base; 2. a fixed mount; 3. a fixing plate; 4. a notch; 5. a construction station plate; 6. a movable block; 7. a pneumatic cylinder; 8. a lifting plate; 9. a sloping block; 10. climbing a ladder; 11. fixing the fence; 12. a movable fence; 13. a bottom box; 14. a fixed box; 15. a vertical block; 16. a connecting pipe; 17. a vertical rod; 18. a motion plate; 19. a movable box; 20. a first motion block; 21. a connecting rod; 22. a second motion block; 23. a flexible spring; 24. a support box; 25. a moving block; 26. a hollow tube; 27. a support plate; 28. a rigid spring; 29. and a roller.

Detailed Description

In the following, the technical solutions in the embodiments of the present invention are described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides an expanded construction platform for eminence operation, as shown in fig. 1 to 6, including base 1, fixed plate 3, construction station board 5, the equal fixed mounting in top both sides of base 1 has mount 2, two fixed mounting has fixed plate 3, two between the mount 2 the notch 4 that link up is seted up to the side of mount 2, movable block 6 and notch 4 sliding connection are passed through to construction station board 5's both sides, construction station board 5's one end and fixed plate 3 slip cup joint, construction station board 5 includes two, two construction station board 5 symmetry sets up the both ends at fixed plate 3, the bottom fixed mounting of fixed plate 3 has pneumatic cylinder 7, the flexible end connection in bottom of pneumatic cylinder 7 has lifter plate 8, one side of lifter plate 8 is articulated to be connected with sloping block 9, the one end that lifter plate 8 was kept away from to sloping block 9 is articulated with movable block 6, construction station board 5 is carried on the back mutually or is close to the other side under lifter plate 8 and sloping block 9's drive, keeps away from or is close to the fixed plate 3 promptly, the front and back side of base 1 all installs gyro wheel 29, gyro wheel 29 is connected with base 1, gyro wheel 29 is connected, and the convenient adjustment support that the constructor the removal that can be convenient through four constructors that the operation support that the removal has set up.

In this embodiment, through setting up construction station board 5, pneumatic cylinder 7, lifter plate 8 and sloping block 9, because pneumatic cylinder 7's operation, will make 8 upward movements of lifter plate, sloping block 9 will promote movable block 6 and slide along notch 4 this moment, thereby realized that construction station board 5 deviates from the motion of fixed plate 3, and then make construction station board 5 can supply the area that the workman of giving the execution stood to obtain effectual extension, at this moment also can enlarge the scope of construction at construction station board 5 top of constructor, make constructor need not to remove this construction support and just can carry out construction on a large scale, constructor's operating efficiency has been improved.

Preferably, as shown in fig. 1, 3, 4 and 5, the expandable construction platform for high-altitude operation further comprises vertical blocks 15, vertical bars 17, moving plates 18, a bottom box 13 and movable boxes 19, wherein the two vertical blocks 15 are fixedly mounted at the bottom of the fixed plate 3 and symmetrically arranged at two sides of the pneumatic cylinder 7, the moving plates 18 are hermetically and slidably mounted in the vertical blocks 15, preferably, the outer surface of the moving plate 18 and the inner walls of the vertical blocks 15 are smooth, so that the moving plates 18 move more smoothly in the vertical blocks 15, one end of each vertical bar 17 is fixedly connected with the top of the lifting plate 8, the other end of each vertical bar penetrates through the vertical block 15 and is fixedly connected with the moving plate 18 inside, the bottom box 13 is fixedly mounted at the top of the base 1, the bottom box 13 is located under the lifting plate 8, two fixed boxes 14 communicated with the bottom box 13 are mounted at the top of the bottom box 13, two fixed 14 symmetries of case set up the both sides at lifter plate 8, connecting pipe 16 and the fixed 14 intercommunications of case with one side are passed through at the top of perpendicular piece 15, base 1 is close to the internally mounted of bottom has movable box 19, under casing 13 is through first coupling mechanism and movable box 19 intercommunication, there is supporting box 24 bottom of movable box 19 through telescopic tube connection, just inside and supporting box 24's of telescopic tube intercommunication movable box 19 inside, during the initialization, supporting box 24's bottom surface is higher than gyro wheel 29 makes things convenient for constructor to remove this construction support to with the adjustment of construction operation position, perpendicular piece 15 is located all to be filled with hydraulic oil in the below space that movable box 19 is located first coupling mechanism of top space, connecting pipe 16, fixed 14 of movable box 18.

In this embodiment, through the arrangement of the vertical block 15, the vertical rod 17, the moving plate 18, the connecting pipe 16, the bottom case 13, the fixed case 14, the first connecting mechanism and the movable case 19, the moving plate 18 can be driven to move upwards by the vertical rod 17 when the lifting plate 8 moves upwards, so that hydraulic oil inside the vertical block 15 is extruded by the moving plate 18 to enter the inside of the connecting pipe 16 and flow into the fixed case 14, then enters the inside of the bottom case 13 by the fixed case 14, then the first connecting mechanism is pushed, and hydraulic oil inside the movable case 19 is pushed by the first connecting mechanism to enter the inside of the supporting case 24, so that the telescopic pipe stretches to drive the supporting case 24 to move downwards, finally the bottom of the supporting case 24 is contacted with the ground, at this time, the roller 29 is suspended, and therefore, an effective supporting and fixing effect is achieved.

Preferably, as shown in fig. 4 and 5, two moving blocks 25 are connected to the inside of the supporting box 24 in a sealing and sliding manner, the two moving blocks 25 are symmetrically arranged about the center of the supporting box 24, a hollow pipe 26 is fixedly connected to one side of the moving blocks 25 away from the center of the supporting box 24, one end of the hollow pipe 26 away from the moving blocks 25 penetrates through the supporting box 24 and extends to the outside of the supporting box 24, a supporting plate 27 is fixedly connected to the outside of the supporting box 24, the end of the hollow pipe 26 is communicated with the moving box 19 through the supporting box 24, and the hollow pipe 26 is filled with hydraulic oil; a rigid spring 28 is sleeved outside the hollow pipe 26, and two ends of the rigid spring 28 are respectively fixedly connected with the inner wall of the supporting box 24 and the moving block 25.

In this embodiment, by arranging the two moving blocks 25, the hollow tube 26 and the supporting plate 27, the contact area between the supporting box 24 and the ground can be increased, so that the supporting stability of the whole construction support is improved, specifically, after the hydraulic oil in the moving box 19 enters the supporting box 24, the hydraulic oil in the hollow tube 26 is extruded, and the two supporting plates 27 are driven by the hydraulic oil to move back to back and slide out of the supporting box 24; in combination with the provision of the rigid spring 28, an automatic return effect of the support plate 27 can be achieved.

Preferably, as shown in fig. 4, the first connecting mechanism includes a first moving block 20, a connecting rod 21 and a second moving block 22, the first moving block 20 is slidably mounted in the movable box 19 in a sealing manner and is located above hydraulic oil, the second moving block 22 is slidably mounted in the bottom box 13 in a sealing manner, one end of the connecting rod 21 is fixedly connected to the first moving block 20, the other end of the connecting rod penetrates through the movable box 19, the base 1 and the bottom box 13 in sequence and is fixedly connected to the second moving block 22, the first connecting mechanism further includes a flexible spring 23, the flexible spring 23 is sleeved outside the connecting rod 21, and two ends of the flexible spring 23 are fixedly connected to the bottom of the second moving block 22 and the bottom of the inner cavity of the bottom box 13 respectively.

In this embodiment, through the setting of first motion piece 20, connecting rod 21, second motion piece 22, can utilize the hydraulic oil promotion second connecting block in the fixed case 14 to move down to drive connecting rod 21 and first motion piece 20 and move down in step, and then convenient quick get into supporting box 24 with the inside hydraulic oil extrusion of movable box 19 in, combine the setting of flexible spring 23, can realize the automatic re-setting of first motion piece 20 and second motion piece 22 fast when lifter plate 8 resumes initial position.

Preferably, as shown in fig. 1 and 2, fixed fences 11 are fixedly mounted on two sides of the top of the fixed plate 3, one end of a movable fence 12 is movably sleeved on the inside of the fixed fence 11 along the sliding direction of the construction station plate 5, the other end of the movable fence 12 extends to the outside of the fixed fence 11, and the bottom end of the movable fence is fixedly connected with the top of the construction station plate 5; a ladder stand 10 is fixedly arranged on one side of the fixed plate 3, and the ladder stand 10 is positioned on one side of the lifting plate 8 far away from the inclined block 9.

In the embodiment, the arrangement of the fixed fences 11 and the movable fences 12 can ensure construction safety and reduce safety accidents, and particularly when the two construction station plates 5 move away from each other, the tail ends of the two movable fences 12 also move inside the two fixed fences 11, so that the movement lengths of the two construction station plates 5 can be adapted; through the arrangement of the ladder stand 10, the construction personnel can conveniently go up and down.

The working principle and the using process are as follows:

as shown in fig. 1 to 6, firstly, a constructor moves the construction platform to a designated construction site, and then starts to climb the ladder stand 10 to the tops of the two construction station plates 5 and the fixing plate 3, and then construction work can be performed;

if a constructor needs to operate an adjacent area at a high position and the adjacent area exceeds the range where the constructor can operate by hands, the constructor can stand on the top of the fixed plate 3 at the moment, then the pneumatic cylinder 7 is started, the lifting plate 8 can move upwards due to the operation of the pneumatic cylinder 7, the two inclined blocks 9 can push the two groups of movable blocks 6 to move back and forth in the notch 4, and the construction station plates 5 positioned on two sides in the fixed plate 3 can move, so that the areas of the two construction station plates 5 on two sides of the fixed plate 3 can be changed, then the pneumatic cylinder 7 is closed, the constructor can stand on the top of the construction station plate 5 after the areas are expanded to perform construction operation, the operation range of the constructor is effectively expanded, and the operation efficiency of the constructor is improved;

when the lifting plate 8 is controlled by the pneumatic cylinder 7 to move upwards, at this time, the two vertical rods 17 push the two moving plates 18 to move upwards in the vertical blocks 15, at this time, hydraulic oil in the vertical blocks 15 enters the inside of the fixed box 14 through the connecting pipes 16 and extrudes the second moving blocks 22, the connecting rods 21 and the first moving blocks 20 to move downwards, the flexible springs 23 are in a state of being compressed by the second moving blocks 22 at this time, when the first moving blocks 20 move downwards, hydraulic oil in the movable box 19 is pushed to enter the inside of the supporting box 24, so that the telescopic pipes are stretched to drive the supporting box 24 to move downwards, finally, the bottom of the supporting box 24 is in contact with the ground, as the first moving blocks 20 move downwards continuously, a part of hydraulic oil directly pushes the two moving blocks 25 to move back and forth against the elastic force of the rigid springs 28, and the other part of hydraulic oil enters the inside of the hollow pipes 26 through the moving blocks 25, so that the hydraulic oil directly acts on the supporting plates 27 to enable the two supporting plates 27 to move back and forth, and can extend out of the bottom of the base 1, and at this time, due to the cooperation between the two supporting boxes 24, the supporting plates 27, the stability of the supporting of the support for the construction support is improved, and the construction support is ensured.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. An expandable construction platform for high-place operation comprises a base (1), a fixed plate (3) and two construction station plates (5), the front and the back of the two sides of the bottom of the base (1) are both provided with rollers (29), the two sides of the top of the base (1) are both fixedly provided with fixed frames (2), a fixed plate (3) is fixedly arranged between the two fixed frames (2), the side surfaces of the two fixed frames (2) are provided with through notches (4), the two sides of the two construction station plates (5) are in sliding connection with the notches (4) through movable blocks (6), the two construction station plates (5) are symmetrically arranged at the two ends of the fixed plates (3), one end of the construction station plate (5) is sleeved with the fixed plate (3) in a sliding way, it is characterized in that the bottom of the fixed plate (3) is fixedly provided with a pneumatic cylinder (7), the bottom telescopic end of the pneumatic cylinder (7) is fixedly connected with a lifting plate (8), one side of lifter plate (8) is articulated to be connected with sloping block (9), two sloping block (9) set up about lifter plate (8) symmetry, two the one end that lifter plate (8) were kept away from in sloping block (9) is articulated with movable block (6), two construction station board (5) are carried on the back mutually or move in opposite directions under the drive of lifter plate (8) and sloping block (9).

2. The expandable construction platform for high-place operation according to claim 1, further comprising vertical blocks (15), vertical bars (17), moving plates (18), bottom boxes (13) and movable boxes (19), wherein the vertical blocks (15) are fixedly mounted at the bottom of the fixed plate (3) and symmetrically arranged at two sides of the pneumatic cylinder (7), the moving plates (18) are slidably mounted in the vertical blocks (15) in a sealing manner, one end of each vertical bar (17) is fixedly connected with the top of the lifting plate (8), the other end of each vertical block penetrates through the vertical blocks (15) and the moving plates (18) inside, the bottom boxes (13) are fixedly mounted at the top of the base (1), the bottom boxes (13) are positioned under the lifting plate (8), the top of each bottom box (13) is provided with two fixed boxes (14) communicated with the bottom boxes (13), the two fixed boxes (14) are symmetrically arranged at two sides of the lifting plate (8), the top of each vertical block (15) is communicated with the fixed boxes (14) at the same side through a connecting pipe (16), the bottom of each movable box (1) is communicated with the bottom box (19) through a supporting mechanism, and the movable boxes (19) are connected with the bottom of the movable boxes (13), and the telescopic pipe is communicated with the inside of the movable box (19) and the inside of the supporting box (24), initially, the bottom surface of the supporting box (24) is higher than the roller (29), and the vertical block (15) is positioned in the upper space of the moving plate (18), the connecting pipe (16), the fixed box (14) and the lower space of the movable box (19) positioned in the first connecting mechanism and are filled with hydraulic oil.

3. The expandable construction platform for high-altitude operation according to claim 2, wherein the support box (24) is internally connected with two moving blocks (25) in a sealing and sliding manner, the two moving blocks (25) are symmetrically arranged about the center of the support box (24), one side of the center of the support box (24) away from the moving blocks (25) is fixedly connected with a hollow pipe (26), one end of the hollow pipe (26) away from the moving blocks (25) penetrates through the support box (24) and extends to the outer part of the support box (24) to be fixedly connected with a support plate (27), the end part of the hollow pipe (26) is communicated with the movable box (19) through the support box (24), and the hollow pipe (26) is filled with hydraulic oil.

4. The expandable construction platform for high-altitude operation according to claim 3, wherein a rigid spring (28) is sleeved outside the hollow pipe (26), and two ends of the rigid spring (28) are fixedly connected with the inner wall of the support box (24) and the moving block (25) respectively.

5. The expandable construction platform for high-altitude operation according to claim 4, wherein the first connecting mechanism comprises a first moving block (20), a connecting rod (21) and a second moving block (22), the first moving block (20) is hermetically and slidably mounted inside the moving box (19) and located above hydraulic oil, the second moving block (22) is hermetically and slidably mounted inside the bottom box (13), one end of the connecting rod (21) is fixedly connected with the first moving block (20), and the other end of the connecting rod sequentially penetrates through the moving box (19), the base (1) and the bottom box (13) and is fixedly connected with the second moving block (22).

6. The expandable construction platform for high operation according to claim 5, wherein the first connecting mechanism further comprises a flexible spring (23), the flexible spring (23) is sleeved outside the connecting rod (21), and two ends of the flexible spring (23) are respectively and fixedly connected with the bottom of the second motion block (22) and the bottom of the inner cavity of the bottom box (13).

7. The expandable construction platform for high altitude operation according to any one of claims 1 to 6, wherein fixed fences (11) are fixedly mounted on two sides of the top of the fixed plate (3), one end of a movable fence (12) is movably sleeved on the fixed fence (11) along the inner part of the sliding direction of the construction station plate (5), the other end of the movable fence (12) extends to the outer part of the fixed fence (11), and the bottom end of the movable fence is fixedly connected with the top of the construction station plate (5).

8. The expandable construction platform for high work according to claim 7, characterized in that a ladder (10) is fixedly arranged on one side of the fixing plate (3), and the ladder (10) is arranged on one side of the lifting plate (8) far away from the inclined block (9).

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