A self-climbing elevator shaft operating platform

Abstract

The application discloses a self-climbing elevator shaft operation platform, and relates to the technical field of elevator shafts, comprising a main plate, a sub plate and a support frame, the support frame is fixed on one side of the main plate, and the sub plate is arranged on the side of the main plate away from the support frame; the support frame comprises a vertical frame body and an inclined frame body, one end of the vertical frame body and the inclined frame body is fixedly connected, one end of the vertical frame body and the inclined frame body away from the connection is fixedly connected with the main plate, and one end of the vertical frame body away from the main plate is rotationally provided with a supporting leg for supporting an operation platform, the supporting leg can be unfolded or retracted; a sliding assembly for driving the sub plate to vertically move relative to the main plate is arranged between the sub plate and the main plate. The application has the effect of improving the problem that the finished operation platform is easy to impact the sidewall of the elevator shaft when hoisted and lifted in the elevator shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction tools, and in particular to a self-climbing elevator shaft operation platform. BACKGROUND

[0002] In the construction of elevator shafts of multi-storey or high-rise buildings, elevator shaft openings are usually reserved at the corresponding design positions of the floor slabs during the pouring of the main structure, and after the pouring of the main structure of the next floor is completed, the reserved elevator shaft openings need to be closed to reduce the possibility of construction personnel falling from the elevator shaft openings.

[0003] After the main structure construction is completed, the construction personnel need to perform secondary structure construction at the elevator shaft openings, at which time an operation platform is usually erected in the elevator shaft. The operation platform reduces the risk of construction personnel falling from the elevator shaft openings and also provides an operation platform for the construction personnel, enabling them to better perform secondary structure masonry and plastering.

[0004] The finished operation platform in the related art usually includes a support foot that is abutted against the floor slab of the next floor, and a track is fixed to the side wall of the elevator shaft. The upper part of the operation platform is fixedly connected with the track to achieve fixed connection between the operation platform and the elevator shaft. When the operation platform needs to be moved upward, a tower crane is used to hoist the finished operation platform upward. Since the finished operation platform has a large volume, hoisting is difficult, and if the operation platform collides with the inner wall of the elevator shaft during hoisting, it can have an irreversible impact on the structural stability of the elevator shaft. SUMMARY

[0005] To improve the problem that the finished operation platform easily collides with the side wall of the elevator shaft when hoisted and lifted in the elevator shaft, the present application provides a self-climbing elevator shaft operation platform.

[0006] The present application provides a self-climbing elevator shaft operation platform, which adopts the following technical solution:

[0007] A self-climbing elevator shaft operation platform includes a main plate, a secondary plate, and a support frame. The support frame is fixed to one side of the main plate, and the secondary plate is arranged on the side of the main plate away from the support frame.

[0008] The support frame includes a vertical frame body and an inclined frame body, which are fixedly connected at one end. The ends of the vertical frame body and the inclined frame body away from the connection are fixedly connected with the main plate. A support foot for supporting the operation platform is rotatably arranged at the end of the vertical frame body away from the main plate.

[0009] A sliding assembly for driving the secondary plate and the main plate to move vertically relative to each other is arranged between the secondary plate and the main plate. A supporting plate for abutting against the floor slab is rotatably arranged on the secondary plate.

[0010] By adopting the technical scheme, after the operation platform is hoisted into the elevator shaft, the supporting legs abut against the floor surface on the side of the elevator shaft, the supporting frame can maintain stability by itself due to the vertical frame body and the inclined frame body, and the construction personnel can stand on the auxiliary plate to perform construction operation;

[0011] When the operation platform needs to be lifted upward, the auxiliary plate is first moved upward relative to the main plate by the sliding assembly until the auxiliary plate is lifted to the floor plate of the upper floor, and the supporting plate can abut against the floor on the side of the elevator shaft of the upper floor; the main plate and the supporting frame are then slid upward relative to the auxiliary plate by the sliding assembly, so that the main plate and the auxiliary plate are close to each other again, thereby achieving the lifting of the operation platform. The operation platform of the application can self-climb, and the operation platform does not need to be hoisted and lifted by a tower crane, thereby reducing the possibility of the operation platform colliding with the wall of the elevator shaft during hoisting.

[0012] Optionally, the sliding assembly comprises a rack set fixed on the auxiliary plate, a gear assembly arranged in the main plate, and a driving source for driving the gear assembly to operate, and the gear assembly can drive the rack set to move.

[0013] By adopting the technical scheme, when the auxiliary plate slides upward relative to the main plate, the driving source is first started to drive the gear assembly to operate, and the gear assembly drives the rack set to move. Since the supporting legs abut against the floor, the main plate cannot move downward, and at this time, the auxiliary plate moves upward until the auxiliary plate moves above the floor plate of the upper floor and the supporting plate is unfolded.

[0014] After the auxiliary plate is lifted into position, the driving source drives the gear assembly to operate. Since the supporting plate limits the downward movement of the auxiliary plate at this time, the rack set moves upward under the driving of the gear assembly, thereby driving the main plate and the supporting frame to move upward until the auxiliary plate and the main plate are attached to each other, and at this time, the lifting of the operation platform is completed. The sliding assembly of the application is simple to operate, and the lifting of the operation platform is more smooth and stable, and the elevator shaft side wall is not easily collided during lifting.

[0015] Optionally, the gear assembly comprises a center rod fixed on the driving source, one end of the center rod is fixed with a gear strip set, and the other end is fixed with a transmission gear set.

[0016] The rack set comprises a plurality of first racks and a plurality of second racks, the gear strip set is used to drive the plurality of first racks to move, the transmission gear set is used to drive the plurality of second racks to move, the plurality of first racks and the plurality of second racks move synchronously, the plane in which the first racks are located is parallel to the length axis of the center rod, and the plane in which the second racks are located is perpendicular to the length axis of the center rod.

[0017] By adopting the technical scheme, the driving source drives the central rod to rotate forward or reversely, the entire gear assembly is driven to rotate forward or reversely, the gear strip group and the transmission gear group are respectively used to drive the first toothed rail and the second toothed rail to move synchronously, the plane where the first toothed rail is located is perpendicular to the plane where the second toothed rail is located, the horizontal movement between the main plate and the auxiliary plate is limited, and the main plate or the auxiliary plate is not prone to horizontal displacement in the vertical movement.

[0018] Optionally, the gear strip group comprises a middle gear fixed to one end of the central rod and a plurality of side gears, the plurality of side gears are arranged on two sides of the middle gear, the middle gear is capable of driving the side gears to rotate, and a plurality of the first toothed rails are respectively and one-to-one engaged with the plurality of side gears.

[0019] By adopting the technical scheme, when the central rod rotates, the middle gear fixed to the central rod rotates, the side gears on two sides of the middle gear rotate through the rotation of the middle gear, the first toothed rails are engaged with the side gears, and thus the vertical movement of the first toothed rails is realized, and the vertical sliding between the main plate and the auxiliary plate is driven.

[0020] Optionally, the transmission gear group comprises a first bevel gear fixed to one end of the central rod away from the gear strip group and a second bevel gear engaged with the first bevel gear, a transmission rod is fixed to the second bevel gear, the length axis of the transmission rod is perpendicular to the length axis of the central rod, a plurality of gear discs are fixed to the transmission rod, and a plurality of the second toothed rails are respectively and one-to-one engaged with the plurality of gear discs.

[0021] By adopting the technical scheme, the rotation of the central rod drives the gear discs to rotate through the meshing effect of the first bevel gear and the second bevel gear, the second toothed rails engaged with the gear discs are driven to move, and the relative vertical sliding of the main plate or the auxiliary plate is realized.

[0022] Optionally, the vertical frame body comprises a cylindrical segment, the supporting leg is rotationally connected to the cylindrical segment, and a plurality of positioning assemblies for locking the position of the supporting leg are fixed to the vertical frame body.

[0023] By adopting the technical scheme, the supporting leg is rotationally connected to the vertical frame body, when it is needed to lift the operation platform, the construction personnel only need to rotate the supporting leg, so that the supporting leg changes from the state of abutting against the floor plate to the state of being retracted into the operation platform, and the operation platform can be lifted upward, the positioning assemblies are arranged at the supporting leg due to the fact that the supporting leg bears a large pressure, the position of the supporting leg is locked, the supporting leg is not prone to rotation, and thus the supporting leg is not prone to displacement when the supporting leg abuts against the floor plate, and the stability of the operation platform is maintained.

[0024] Optionally, the positioning assembly comprises a locking member and a plurality of positioning plates, the positioning plates are provided with a plurality of first locking holes, the supporting legs are provided with second locking holes, and the locking member can be simultaneously inserted into the first locking holes and the second locking holes.

[0025] By adopting the above technical scheme, when the supporting legs are in the state of abutting against the floor slab or the state of being retracted in the operation platform, the locking member is simultaneously inserted into the first locking holes and the second locking holes, so that the rotation of the supporting legs around the vertical frame body is limited, and the locking of the position of the supporting legs is realized.

[0026] Optionally, a plurality of elastic members are arranged between the supporting plate and the auxiliary plate, one end of the elastic member is fixed to the plate surface of the supporting plate close to the main plate, the other end is fixedly connected with the side wall of the auxiliary plate, and the elastic member is used to push the supporting plate to rotate away from the main plate.

[0027] The auxiliary plate is further fixed with a limiting plate used to limit the supporting plate to rotate to a position parallel to the plate surface of the auxiliary plate.

[0028] By adopting the above technical scheme, when the auxiliary plate rises, the last floor slab gives the supporting plate a force to rotate towards the main plate, at this time, the supporting plate rotates towards the main plate until the supporting plate can pass through the elevator shaft opening, when the auxiliary plate rises above the last floor slab, the supporting plate rotates away from the main plate under the elastic restoring force of the elastic member, and the supporting plate can only rotate to a position parallel to the plane where the auxiliary plate is located under the limiting action of the limiting plate, at this time, the supporting plate can abut against the floor surface of the last floor slab, and the rising of the auxiliary plate is completed.

[0029] Optionally, a telescopic rod member is arranged between the main plate and the auxiliary plate, the telescopic rod member comprises a sleeve rod fixed to the main plate and a sliding rod fixed to the auxiliary plate, the sliding rod is inserted into and slides in the sleeve rod, and the telescopic rod member passes through the main plate.

[0030] An inner wall of the end of the sleeve rod close to the auxiliary plate is fixed with a retraction ring, and an end of the sliding rod away from the auxiliary plate is fixed with a protrusion used to abut against the retraction ring.

[0031] By adopting the above technical scheme, the telescopic rod member is arranged between the main plate and the auxiliary plate, and the retraction ring and the protrusion are arranged to make it difficult for the sliding rod to be separated from the sleeve rod, when the main plate or the auxiliary plate vertically moves under the driving of the gear assembly, the toothed rail assembly is difficult to be separated from the gear assembly, so that the operation platform can smoothly climb.

[0032] In summary, the present application has at least one of the following beneficial effects:

[0033] 1. The operation platform in the elevator shaft is lifted without using a tower crane for hoisting, so that the tower crane can be used for other hoisting positions in the construction site, and the construction efficiency is improved.

[0034] 2. The self-climbing operation platform of the present application is vertically up and down when being lifted, so it is not easy to collide with the sidewall of the elevator shaft during the lifting process, reducing the possibility of the operation platform colliding with the sidewall of the elevator shaft and causing damage to the sidewall of the elevator shaft in the related art;

[0035] 3. The self-climbing function of the operation platform is realized by the sliding assembly of the present application, which has a simple structure and is easy to operate and use. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application;

[0037] Figure 2 is an enlarged view of A in Figure 1

[0038] Figure 3 is a partial cutaway schematic diagram of the sliding assembly of an embodiment of the present application;

[0039] Figure 4 is a partial structure schematic diagram of the present application for the supporting plate;

[0040] Figure 5 is a cross-sectional schematic diagram of the telescopic rod of an embodiment of the present application.

[0041] BRIEF DESCRIPTION OF DRAWINGS: 1, main plate; 11, perforation; 2, auxiliary plate; 21, supporting plate; 211, elastic member; 22, limiting plate; 3, support frame; 31, vertical frame body; 32, inclined frame body; 33, support leg; 331, second locking hole; 34, positioning plate; 341, first locking hole; 4, sliding assembly; 41, rack group; 411, first rack; 412, second rack; 42, gear assembly; 421, center rod; 422, central gear; 423, edge gear; 424, transmission gear; 425, first bevel gear; 426, second bevel gear; 427, transmission rod; 428, gear disc; 43, driving source; 5, locking member; 6, telescopic rod; 61, sleeve rod; 611, contraction ring; 62, sliding rod; 621, protruding block. DETAILED DESCRIPTION

[0042] The following will be described in detail in combination with the accompanying drawings Figures 1-5 The present application will be further described in detail.

[0043] The self-climbing operation platform of the present application disclosed in the embodiment, with reference to Figure 1 and Figure 2 ​The utility model provides an operating platform of self-climbing elevator shaft, which comprises a support frame 3, wherein the support frame 3 comprises a vertical frame body 31 and an inclined frame body 32, one end of the vertical frame body 31 and the inclined frame body 32 is fixedly connected, and the other end away from the connection position of the vertical frame body 31 and the inclined frame body 32 is provided with a main plate 1, the main plate 1 is fixedly connected with the vertical frame body 31 and the inclined frame body 32, and the side away from the support frame 3 of the main plate 1 is movably provided with a sub plate 2.

[0044] With reference to Figure 1 And Figure 2 , one end of the vertical frame body 31 away from the main plate 1 is provided with a cylindrical section, the support leg 33 is rotatably sleeved on the cylindrical section, the vertical frame body 31 is provided with a limiting assembly, the limiting assembly comprises two positioning plates 34 fixed at one end of the cylindrical section, the positioning plate 34 is provided with a first locking hole 341, the support leg 33 is provided with a second locking hole 331, the limiting assembly further comprises a locking piece 5 arranged between the positioning plate 34 and the support leg 33, and the locking piece 5 can be simultaneously inserted into the first locking hole 341 and the second locking hole 331. The construction personnel can align the first locking hole 341 and the second locking hole 331 by rotating the support leg 33, and insert the locking piece 5 into the first locking hole 341 and the second locking hole 331, so as to realize the position locking between the support leg 33 and the vertical frame body 31. The locking piece 5 can be a bolt rod, and one end of the bolt rod is fixed with an enlarged head which cannot pass through the first locking hole 341 and the second locking hole 331.

[0045] With reference to Figure 1 And Figure 2 When the operating platform is hoisted into the elevator shaft for the first time, the tower crane is used for hoisting, and the construction personnel adjusts the position of the operating platform at the elevator shaft opening until the support leg 33 and the vertical frame body 31 abut against the floor surface of the corresponding floor, and the design size of the main plate 1 matches the cross-sectional size and shape of the elevator shaft opening. Since the support frame 3 is in the shape of an inverted triangle, the side of the main plate 1 abuts against the side wall of the elevator shaft opening at this time. When the construction personnel stands on the sub plate 2 to work, the force applied by the construction personnel to the operating platform is transmitted to the support leg 33 below through the structure of the support frame 3 itself and the abutting action of the main plate 1 and the side wall of the elevator shaft opening, and the force balance of the whole operating platform is realized through the support of the floor surface to the support leg 33.

[0046] With reference to Figure 1 And Figure 3The main plate 1 and the auxiliary plate 2 are provided with a sliding assembly 4, the sliding assembly 4 comprises a rack group 41 fixed on the side of the auxiliary plate 2 close to the main plate 1, a gear assembly 42 arranged in the main plate 1, and a driving source 43 driving the gear assembly 42 to operate. The rack group 41 comprises two first racks 411 and two second racks 412, and the main plate 1 is provided with a through hole 11 for the rack group 41 to pass through, and the driving source 43 can be a motor.

[0047] Referring to Figure 3 The gear assembly 42 comprises a center rod 421 fixed with the output end of the driving source 43, and the driving source 43 is fixed at the middle position of the center rod 421. One end of the center rod 421 is fixed with a gear strip group, and the other end is fixed with a transmission gear group. The gear strip group comprises a middle gear 422, two side gears 423 and a transmission gear 424, the middle gear 422 is fixedly connected with one end of the center rod 421, and the plane where the middle gear 422 is located is perpendicular to the length axis of the center rod 421, the middle gear 422 is engaged with the transmission gear 424 on one side, and is engaged with the side gear 423 on the other side, and the transmission gear 424 is engaged with the side gear 423 away from the middle gear 422. The rotation of the center rod 421 drives the rotation of the middle gear 422, and drives the rotation of the side gear 423 and the transmission gear 424, the two first racks 411 are respectively engaged with the side gears 423 at both ends of the gear strip group, and the first racks 411 engaged with the side gears 423 are vertically moved through the rotation of the side gears 423, at this time, the plane where the first racks 411 are located is parallel to the length axis of the center rod 421.

[0048] Referring to Figure 3 The transmission gear group comprises a first bevel gear 425 fixed at the end of the center rod 421 away from the gear strip group, the first bevel gear 425 is engaged with a second bevel gear 426, and the second bevel gear 426 is coaxially fixed with a transmission rod 427. Through the meshing action of the first bevel gear 425 and the second bevel gear 426, when the center rod 421 rotates around its own axis, the transmission rod 427 can be driven to rotate around its own axis, and the length axis of the transmission rod 427 is perpendicular to the length axis of the center rod 421. The transmission rod 427 is fixed with a gear disc 428 at both ends, the disc surface of the gear disc 428 is perpendicular to the length axis of the transmission rod 427, and the two second racks 412 are respectively engaged with the two gear discs 428, at this time, the plane where the second racks 412 are located is perpendicular to the length axis of the center rod 421.

[0049] Referring to Figure 4The opposite side edges of the auxiliary plate 2 are rotationally provided with a supporting plate 21, and a plurality of elastic members 211 are arranged between the supporting plate 21 and the side wall of the auxiliary plate 2, and the elastic member 211 can be a compression spring. The auxiliary plate 2 is further fixed with a limiting plate 22 for limiting the rotation of the supporting plate 21 away from the main plate 1, the limiting plate 22 is welded on the side wall of the auxiliary plate 2, and the plane of the limiting plate 22 is parallel to the plane of the auxiliary plate 2. Through the limiting effect of the limiting plate 22, the supporting plate 21 can only rotate towards the main plate 1 or rotate towards the auxiliary plate 2 to a state parallel to the plane of the auxiliary plate 2.

[0050] With reference to Figure 1 and Figure 3 , by arranging the sliding assembly 4 and the supporting plate 21, the operation platform can realize self-climbing. Specifically, when it is needed to lift the operation platform from the next layer of the elevator shaft opening to the upper layer of the elevator shaft opening, first start the driving source 43 to drive the gear assembly 42 to operate, at this time, since the supporting leg 33 abuts against the floor plate, the operation platform is difficult to move downward, so the gear assembly 42 drives the toothed rail set 41 to move upward, thereby driving the auxiliary plate 2 to move upward, when the auxiliary plate 2 moves close to the floor plate of the upper layer, the floor plate of the upper layer exerts a downward pushing force on the supporting plate 21, at this time, the supporting plate 21 rotates towards the main plate 1 until the auxiliary plate 2 rises above the floor plate of the upper layer, the driving source 43 is turned off, at this time, the supporting plate 21 can rotate away from the main plate 1 under the elastic restoring force of the elastic member 211, and rotate to abut against the limiting plate 22.

[0051] With reference to Figure 2 and Figure 3 , after the auxiliary plate 2 is lifted, the driving source 43 is started again to drive the gear assembly 42 to drive the toothed rail set 41 to move downward, thereby driving the auxiliary plate 2 to descend until the supporting plate 21 abuts against the floor plate of the upper layer, the driving source 43 continues to drive the gear assembly 42 to operate, since the supporting plate 21 abuts against the floor plate, the auxiliary plate 2 is difficult to move downward, at this time, the gear assembly 42 drives the supporting frame 3 and the main plate 1 to move upward, when the supporting leg 33 rises to not abut against the floor plate, the driving source 43 is turned off. The locking member 5 is taken out from the first locking hole 341 and the second locking hole 331 to release the locking between the supporting leg 33 and the vertical frame body 31, and the supporting leg 33 is rotated to retract into the supporting frame 3, the driving source 43 is started again to drive the supporting frame 3 and the main plate 1 to continue to move upward until the main plate 1 and the auxiliary plate 2 abut against each other. The supporting leg 33 is rotated again to abut against the floor plate of the upper layer, and thus the lifting of the operation platform is completed.

[0052] With reference to Figure 1 and Figure 4In order to reduce the possibility of damage to the floor slab caused by the supporting plate 21 when the supporting plate 21 abuts against the floor slab, a rubber layer is arranged on the side wall of the supporting plate 21 away from the main plate 1. At the same time, the first toothed rail 411 and the second toothed rail 412 arranged in different directions can limit the horizontal position between the auxiliary plate 2 and the main plate 1, so that it is difficult for the main plate 1 and the auxiliary plate 2 to horizontally slide relative to each other.

[0053] With reference to Figure 5 The main plate 1 and the auxiliary plate 2 are further provided with a telescopic rod 6, which includes a sleeve rod 61 fixed on the main plate 1 and a sliding rod 62 fixed on the auxiliary plate 2 close to the main plate 1. The sleeve rod 61 penetrates through the main plate 1 and is hollow, and the sliding rod 62 is slidingly inserted into the sleeve rod 61. An elastic ring 611 is fixed on the inner wall of the end of the sleeve rod 61 close to the auxiliary plate 2, and a protrusion 621 is fixed on the end of the sliding rod 62 away from the auxiliary plate 2. The protrusion 621 can only move in the sleeve rod 61 and can abut against the elastic ring 611. The arrangement of the elastic ring 611 and the protrusion 621 enables the sliding rod 62 to slide in the sleeve rod 61 and makes it difficult for the sliding rod 62 to be separated from the sleeve rod 61, thereby reducing the possibility of disengagement of the gear assembly 42 and the toothed rail in the vertical direction.

[0054] The implementation principle of the self-climbing elevator shaft operation platform according to an embodiment of the present application is as follows: the driving source 43 is started to drive the gear assembly 42 to rotate, and under the meshing action of the toothed rail and the gear disc 428 and the side gear 423, the auxiliary plate 2 moves upward until the auxiliary plate 2 is above the floor slab, and at this time the supporting plate 21 is horizontally unfolded under the elastic restoring force of the elastic member 211. The driving source 43 is adjusted to drive the gear disc 428 and the side gear 423 to rotate reversely relative to the previous stage, thereby driving the auxiliary plate 2 to move downward until the supporting plate 21 abuts against the floor slab of the previous floor. At this time, the driving source 43 continues to operate to drive the support frame 3 to move upward under the driving of the gear assembly 42, and after the supporting leg 33 is not in abutment with the floor slab, the driving source 43 is turned off. At this time, the supporting leg 33 is unlocked and rotated to be stored in the support frame 3, and then the supporting leg 33 is locked again. The driving source 43 is started again to drive the gear assembly 42 to continue to operate, and at this time the main plate 1 and the support frame 3 are lifted upward under the meshing action of the gear assembly 42 and the toothed rail until the main plate 1 and the auxiliary plate 2 are attached, and then the driving source 43 is turned off. The construction personnel unlock the supporting leg 33 and the vertical frame body 31 again, rotate the supporting leg 33 until the supporting leg 33 abuts against the floor slab, and complete the self-climbing of the elevator shaft operation platform. The self-climbing and lifting of the operation platform according to the present application do not need to use a tower crane for lifting, thereby improving the construction efficiency, and in the lifting process, the elevator shaft side wall is not easy to collide, thereby reducing the possibility of damage to the elevator shaft side wall caused by collision.

[0055] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A self-climbing elevator shaft work platform, characterized by: The utility model relates to a kind of movable operation platform, including main plate (1), vice plate (2) and support frame (3), the support frame (3) is fixed in the side of the main plate (1), vice plate (2) is set in the side of the main plate (1) away from support frame (3). The support frame (3) includes vertical frame body (31) and oblique frame body (32), vertical frame body (31) and oblique frame body (32) one end fixed connection, and the vertical frame body (31) and oblique frame body (32) are fixedly connected with the main plate (1) at the end away from the connecting place, and the vertical frame body (31) is rotatably provided with a supporting leg (33) for supporting the operation platform at the end away from the main plate (1). The vice plate (2) and the main plate (1) are provided with a sliding assembly (4) for driving the vice plate (2) and the main plate (1) to move vertically relative to each other, and the two side edges of the vice plate (2) are rotatably provided with a supporting plate (21) for abutting against the floor slab; the sliding assembly (4) includes a rack group (41) fixed on the vice plate (2), a gear assembly (42) provided in the main plate (1), and a driving source (43) for driving the gear assembly (42) to operate, the gear assembly (42) can drive the rack group (41) to move; When the operation platform needs to be lifted from the next layer elevator shaft opening to the upper layer elevator shaft opening, first start the driving source (43), so that the driving source (43) drives the gear assembly (42) to operate, at this time, since the supporting leg (33) abuts against the floor slab, the operation platform is difficult to move downward, therefore, the gear assembly (42) drives the rack group (41) to move upward, thereby driving the vice plate (2) to move upward, when the vice plate (2) moves up to the floor slab of the upper layer, the floor slab exerts a downward pushing force on the supporting plate (21), at this time, the supporting plate (21) rotates towards the main plate (1), until the vice plate (2) rises above the floor slab of the upper layer, and the driving source (43) is turned off; when the vice plate (2) is lifted, start the driving source (43) again, so that the gear assembly (42) drives the rack group (41) to move downward, thereby driving the vice plate (2) to descend until the supporting plate (21) abuts against the floor slab of the upper layer, the driving source (43) continues to drive the gear assembly (42) to operate, since the supporting plate (21) abuts against the floor slab, the vice plate (2) is difficult to move downward, at this time, the gear assembly (42) drives the support frame (3) and the main plate (1) to lift upward, when the supporting leg (33) rises to not abut against the floor slab, the driving source (43) is turned off.

2. A self-climbing elevator shaft access platform according to claim 1, characterised in that: The gear assembly (42) includes a center rod (421) fixed on the driving source (43), one end of the center rod (421) is fixed with a gear strip group, and the other end is fixed with a transmission gear group; The rack group (41) comprises a plurality of first racks (411) and a plurality of second racks (412), the gear rack group is used to drive the plurality of first racks (411) to move, the transmission gear group is used to drive the plurality of second racks (412) to move, the plurality of first racks (411) and the plurality of second racks (412) move synchronously, and the plane in which the first rack (411) is parallel to the length axis of the center rod (421), and the plane in which the second rack (412) is perpendicular to the length axis of the center rod (421).

3. A self-climbing elevator shaft access platform according to claim 2, characterised in that: The gear rack group comprises a middle gear (422) fixed at one end of the center rod (421) and a plurality of side gears (423), the plurality of side gears (423) are arranged on both sides of the middle gear (422), and the rotation of the middle gear (422) can drive the rotation of the side gear (423), and the plurality of first racks (411) are in one-to-one correspondence with the plurality of side gears (423) and are engaged.

4. A self-climbing elevator shaft access platform according to claim 2, wherein: The transmission gear group comprises a first bevel gear (425) fixed at the end of the center rod (421) away from the gear rack group, and a second bevel gear (426) engaged with the first bevel gear (425), the second bevel gear (426) is fixed with a transmission rod (427), the length axis of the transmission rod (427) is perpendicular to the length axis of the center rod (421), and a plurality of gear discs (428) are fixed on the transmission rod (427), and the plurality of second racks (412) are in one-to-one correspondence with the plurality of gear discs (428) and are engaged.

5. A self-climbing elevator shaft access platform according to claim 1, characterized in that: The vertical frame body (31) comprises a cylindrical segment, the foot (33) is rotatably connected to the cylindrical segment, and a plurality of positioning assemblies for locking the position of the foot (33) are fixed on the vertical frame body (31).

6. A self-climbing elevator shaft access platform according to claim 5, wherein: The positioning assembly comprises a locking piece (5) and a plurality of positioning plates (34), a plurality of first locking holes (341) are formed in the positioning plate (34), a second locking hole (331) is formed in the foot (33), and the locking piece (5) can be inserted into the first locking hole (341) and the second locking hole (331) at the same time.

7. A self-climbing elevator shaft access platform according to claim 1, wherein: A plurality of elastic members (211) are arranged between the supporting plate (21) and the auxiliary plate (2), one end of the elastic member (211) is fixed to the plate surface of the supporting plate (21) close to the main plate (1), the other end is fixedly connected with the side wall of the auxiliary plate (2), and the elastic member (211) is used to push the supporting plate (21) to rotate away from the main plate (1); The auxiliary plate (2) is further fixed with a limiting plate (22) for limiting the supporting plate (21) to be able to rotate only to be parallel to the plate surface of the auxiliary plate (2).

8. A self-climbing elevator shaft access platform according to claim 1, characterized in that: A telescopic rod (6) is arranged between the main plate (1) and the auxiliary plate (2), the telescopic rod (6) comprises a sleeve rod (61) fixed on the main plate (1) and a sliding rod (62) fixed on the auxiliary plate (2), the sliding rod (62) is inserted and slides in the sleeve rod (61), and the telescopic rod (6) penetrates through the main plate (1). The sleeve rod (61) is fixed with a contraction ring (611) on the inner wall of one end close to the secondary plate (2), and the sliding rod (62) is fixed with a protruding block (621) for abutting against the contraction ring (611) on the end away from the secondary plate (2).

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