Adjustable elevator shaft working platform and use method thereof

Abstract

The present application relates to an adjustable elevator shaft work platform and a method of using the same, and relates to the field of elevator shaft operations, which includes an elevator shaft and a work platform located in the elevator shaft; an adjustable lifting frame is provided in the elevator shaft, the adjustable lifting frame includes a connecting bottom plate and a plurality of mounting rods, a plurality of lifting tooth plates are provided on the side walls of the work platform, the adjustable lifting frame is provided with a lifting assembly for driving the work platform to rise or fall, and the lifting assembly includes a plurality of active rotating rods, a plurality of driving motors, and a plurality of connecting parts; the lower end of the active rotating rod is rotatably connected to the connecting bottom plate, the mounting rod is provided with a mounting plate, the driving motor is connected to the mounting plate, the active rotating rod is connected to the coupling of the driving motor, each active rotating rod is provided with a plurality of connecting parts, and all the connecting parts jointly drive the lifting tooth plates to drive the work platform to rise or fall. The present application has the effect of improving the convenience of adjusting the height position of the work platform in the elevator shaft.

Description

Technical Field

[0001] The present application relates to the field of elevator shaft operations, and in particular to an adjustable elevator shaft operation platform and a method of using the same. Background Art

[0002] The elevator shaft is the hoistway where the elevator is installed, and is also the bearing track for the elevator to rise and fall.

[0003] At present, in order to ensure the safe use of elevators, it is necessary to carry out regular maintenance and upkeep on the elevators, including the maintenance and overhaul of the elevator shaft. The height of the elevator shaft is relatively high, so it is necessary to install a platform in the elevator shaft for operating inside the elevator shaft; the prior art involves an elevator shaft operating platform, comprising a channel steel platform, a plurality of plungers arranged on the channel steel platform, and a support frame arranged on the channel steel platform; the support frame comprises a platform frame detachably connected to the lower surface of the channel steel platform and folding legs detachably connected to the platform frame. After entering the elevator shaft, the staff climbs to the position requiring overhaul or maintenance by means of the folding legs, and then installs the channel steel platform to carry out the operation.

[0004] With respect to the above-mentioned related technologies, the inventors believe that when maintenance is required in the elevator shaft, it is usually necessary to inspect and repair equipment or instruments at multiple heights, so the height position needs to be constantly adjusted. After adjusting the position of the above-mentioned elevator shaft, it is necessary to constantly climb the position, and it is difficult to adjust the position of the platform by oneself. Therefore, a lot of time needs to be spent on adjusting the position, which reduces the operating efficiency of the elevator shaft, so it needs to be improved. Summary of the invention

[0005] In order to improve the convenience during elevator shaft maintenance, the present application provides an adjustable elevator shaft working platform and a method of using the same.

[0006] The present application provides an adjustable elevator shaft working platform and a construction method thereof, which adopts the following technical solutions:

[0007] An adjustable elevator shaft working platform comprises an elevator shaft and a working platform located in the elevator shaft; an adjustable lifting frame is arranged in the elevator shaft, the adjustable lifting frame comprises a connecting bottom plate and a plurality of mounting rods, all of the mounting rods are connected to the connecting bottom plate, the working platform is located above the connecting bottom plate, a plurality of lifting tooth plates are arranged on the side wall of the working platform, the adjustable lifting frame is provided with a lifting assembly for driving the working platform to rise or fall, the lifting assembly comprises a plurality of active rotating rods, a plurality of driving motors, and a plurality of connecting members, each of the mounting rods corresponds to an active rotating rod and a driving motor; the lower end of the active rotating rod is rotatably connected to the connecting bottom plate, a mounting plate is arranged at one end of the mounting rod away from the connecting bottom plate, the driving motor is connected to the mounting plate, the other end of the active rotating rod is connected to the coupling of the driving motor, the connecting member is arranged along the length direction of the active rotating rod, each of the active rotating rods is correspondingly provided with a plurality of connecting members, and all of the connecting members jointly drive the lifting tooth plates to drive the working platform to rise or fall; a limiting assembly for limiting the lifting plate is arranged at the working platform.

[0008] By adopting the above technical solution, after starting the drive motor, the active rotating rod rotates, so that the connecting piece drives and drives the connecting tooth plate to rise or fall, and the working platform rises or falls together with the connecting tooth plate, so that the height position of the working platform can be adjusted, so that the staff can quickly reach the required position in the elevator shaft, thereby maintaining the inside of the elevator shaft, which improves the convenience of the staff when working inside the elevator shaft.

[0009] Preferably, the connecting member includes a first active bevel gear, a first driven bevel gear, a first rotating rod and a rotating gear, the first active bevel gear is sleeved on the active rotating rod, the first driven bevel gear is meshed with the first active bevel gear, one end of the first rotating rod is connected to the first driven bevel gear, the rotating gear is sleeved on the first rotating rod and meshed with a lifting gear plate, the side wall of the mounting rod is provided with a connecting side plate, the first rotating rod is rotatably connected to the connecting side plate, and the length of the lifting gear plate is greater than the spacing between the rotating gears between two adjacent connecting members.

[0010] By adopting the above technical solution, after the driving motor rotates, the rotating rod drives the first active bevel gear to rotate, so that the first driven bevel gear drives the first rotating rod to rotate, and the rotating gear rotates synchronously with the first rotating rod, so that the connecting tooth plate with the rotating gear rises or falls, so as to drive the entire working platform to rise or fall, and the lifting tooth plate rises or falls until it is disengaged from the rotating gear of one connecting member so that it can just mesh with the rotating gear of the adjacent connecting member, so that the connecting tooth plate can be moved uninterruptedly, so that the working platform can rise or fall smoothly.

[0011] Preferably, the limit assembly includes a reciprocating motor, a connecting rod, a limit gear and a sliding rack, each of the mounting rods corresponds to a limit assembly, the side wall of the working platform is provided with an auxiliary plate, the reciprocating motor is connected to the auxiliary plate, the connecting rod is connected to the coupling of the reciprocating motor, the working platform is provided with an auxiliary groove, the sliding rack is inserted in the auxiliary groove, the limit gear is sleeved on the connecting rod and meshed with the sliding rack, the side wall of the mounting rod is provided with a plurality of limit grooves for inserting the sliding rack, and the inner wall of the limit groove can fit with the sliding rack.

[0012] By adopting the above technical solution, when the working platform rises to the required height, the reciprocating motor is started, and the reciprocating motor drives the connecting rod to rotate, thereby causing the limit gear to rotate. The sliding rack meshing with the sliding gear moves, slides in the auxiliary groove, and can be inserted into the limit groove at the mounting rod, and the side wall of the sliding rack can fit with the inner wall of the limit groove, making it difficult for the working platform to continue to rise or descend, thereby limiting the position of the working platform, improving the stability of the working platform when it stops, and making the working platform safer when in use.

[0013] Preferably, a guide surface is provided at one end of the sliding rack away from the end wall of the auxiliary groove.

[0014] By adopting the above technical solution, the guide surface can reduce the area of ​​the sliding rack when it is inserted into the limiting groove, so that the sliding rack can be quickly aligned with the limiting groove and the smoothness of the sliding rack when inserted is improved.

[0015] Preferably, each of the mounting rods is also provided with a plurality of anti-falling components, and the anti-falling components include a support tube, a first connecting plate, a second connecting plate and a buffer spring. A clearance groove is provided on the surface of the support tube, and the first connecting plate is connected to the inner wall of the clearance groove. One end of the buffer spring is connected to the first connecting plate, and the other end of the buffer spring is connected to the second connecting plate. The mounting rod is provided with a synchronous part, and the synchronous part is connected to the anti-falling component, and each of the anti-falling components corresponds to a synchronous part.

[0016] By adopting the above technical solution, when the working platform is rising or descending, when the connecting tooth plate and the rotating gear at the connecting part are disengaged, the working platform can be dropped and then counteracted with the nearest anti-falling part after falling, thereby reducing the further descent of the working platform. After the working platform counteracts the anti-falling part, the buffer spring contracts and absorbs part of the impact force, thereby providing a buffer for the working platform when it descends, so as to reduce the working platform from continuing to descend violently, thereby improving the safety of the working platform when in use.

[0017] Preferably, the synchronization member includes a first synchronization rod, a second synchronization rod, a synchronization gear, a second active bevel gear and a second driven bevel gear, one end of the first synchronization rod is rotatably connected to the side wall of the connecting side plate, the synchronization gear is sleeved on the first synchronization rod, the second active bevel gear is sleeved on the first synchronization rod, the second driven bevel gear and the second active bevel gear are meshed with each other, the second synchronization rod is connected to the second driven bevel gear, the connecting side wall is provided with a receiving plate, the other end of the second synchronization rod is rotatably connected to the receiving plate, the support cylinder is connected to the second synchronization rod, and the lifting gear plate is provided with a driven gear plate meshing with the synchronization gear.

[0018] By adopting the above technical solution, when the connecting tooth plate rises, the driven tooth plate drives the lifting gear to rotate, so that the first synchronization rod drives the second active bevel gear to rotate, so that the second driven bevel gear drives the second synchronization rod to rotate, and the support cylinder rotates synchronously with the second synchronization rod, so that the support cylinder can be located below the working platform after the working platform rises.

[0019] Preferably, the length of the second connecting plate is greater than the width of the supporting tube, and the bottom wall of the second connecting plate is provided with an inserting groove, and the supporting tube can be inserted into the inserting groove.

[0020] By adopting the above technical solution, when the working platform is lowered, the lower end of the working platform is abutted against the surface of the second connecting plate, so that the second connecting plate is abutted against the support tube under the action of the buffer spring, and the support tube is inserted into the plug-in slot, which can reduce the phenomenon of the second connecting plate being inserted back into the clearance slot, thereby improving the stability of the second connecting plate.

[0021] Preferably, a buffer pad is provided on a side of the second connecting plate away from the first connecting plate.

[0022] By adopting the above technical solution, after the working platform descends, it will be against the buffer pad on the surface of the second connecting plate. After the buffer pad senses the impact force of the working platform, it will shrink, thereby further reducing the impact force when the working platform descends. At the same time, it can play a shock-absorbing role, which can reduce the damage caused by the impact force to the workers on the working platform, thereby improving the safety of the working platform.

[0023] A method for using an adjustable elevator shaft working platform comprises the following steps:

[0024] Entering the elevator shaft: After entering the elevator shaft, the staff will connect to the working platform on the bottom plate;

[0025] Adjust the working platform: start the drive motor, which drives the active rotating rod to rotate, so that the connecting piece works, and the lifting gear plate at the working platform rises or falls under the action of the connecting piece, thereby adjusting the height position of the working platform;

[0026] Fixed working platform: When the working platform reaches the required position, operate the limit assembly to fix the height of the working platform and the staff can start working.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. When the working platform needs to rise or fall, start the drive motor, which drives the active rotating rod to rotate, thereby driving all the connecting parts to operate together. The lifting gear plate rises or falls under the action of the connecting parts, so that the position of the lifting gear plate can be adjusted. The lifting gear plate is connected to the working platform, so that the position of the working platform can be adjusted, which can facilitate the staff to reach different positions in the elevator shaft;

[0029] 2. After the working platform stops, the reciprocating motor is started, so that the limit gear drives the sliding rack to move, so that the sliding rack is inserted into the limit groove, and the sliding rack fits with the inner wall of the limit groove, so that the working platform is difficult to rise or fall, thereby improving the safety of the working platform;

[0030] 3. An anti-fall component is also provided at the mounting rod. After the working platform rises, the anti-fall component can be rotated to the bottom of the working platform. When the connecting tooth plate is disengaged from the rotating gear, the anti-fall component will take over the working platform, thereby reducing the further descent of the working platform and thereby improving the safety of the working platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of an adjustable elevator shaft working platform according to an embodiment of the present application.

[0032] Figure 2 It is a schematic diagram used to represent the connection relationship between the working platform and the adjustment lifting frame after removing the elevator shaft.

[0033] Figure 3 yes Figure 2 Enlarged schematic diagram of part a in the middle.

[0034] Figure 4 It is a partially enlarged schematic diagram used to illustrate the connection relationship between the limit assembly and the working platform.

[0035] Figure 5 It is a schematic diagram used to reflect the positional relationship between the synchronizer, anti-fall components and the working platform.

[0036] Figure 6 It is a cross-sectional schematic diagram used to reflect the internal structure of the fall protection component.

[0037] Description of reference numerals:

[0038] 1. Elevator shaft; 2. Working platform; 21. Lifting gear plate; 22. Auxiliary plate; 23. Auxiliary slot; 24. Driven gear plate; 3. Adjusting lifting frame; 31. Connecting bottom plate; 32. Mounting rod; 321. Mounting plate; 322. Limiting slot; 33. Connecting side plate; 4. Lifting assembly; 41. Active rotating rod; 42. Driving motor; 43. Connecting piece; 431. First active bevel gear; 432. First driven bevel gear; 433. First rotating rod; 434. Rotating gear; 5. Limiting Position assembly; 51, reciprocating motor; 52, connecting rod; 53, limit gear; 54, sliding rack; 541, guide surface; 6, anti-fall assembly; 61, support tube; 611, give way groove; 62, first connecting plate; 63, second connecting plate; 631, plug-in groove; 64, buffer spring; 65, buffer pad; 7, synchronizer; 71, first synchronization rod; 72, second synchronization rod; 73, synchronization gear; 74, second active bevel gear; 75, second driven bevel gear; 76, connecting block. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-6 This application is described in further detail.

[0040] The present application embodiment discloses an adjustable elevator shaft working platform and a method of using the same. Figure 1 , Figure 2 and Figure 3 An adjustable elevator shaft working platform includes an elevator shaft 1 and a working platform 2 located in the elevator shaft 1. An adjustable lifting frame 3 is installed in the elevator shaft 1. The adjustable lifting frame 3 includes a connecting bottom plate 31 and four mounting rods 32. The bottom wall of the connecting bottom plate 31 is in contact with the upper surface of the bottom wall of the elevator shaft 1. The four mounting rods 32 are arranged along the height direction of the elevator shaft 1. The lower end of each mounting rod 32 is welded and fixed to the connecting bottom plate 31. The working platform 2 is located above the connecting bottom plate 31. The working platform 2 is a rectangular plate. Four lifting tooth plates 21 are installed at the working platform 2. A lifting component 4 for driving the working platform 2 to rise or fall is installed at the mounting rod 32.

[0041] Reference Figure 1 , Figure 2 and Figure 3The lifting assembly 4 includes four active rotating rods 41, four driving motors 42 and a plurality of connecting members 43. Each mounting plate 321 corresponds to an active rotating rod 41 and a driving motor 42. The upper end of each mounting rod 32 is fixed with a mounting plate 321 by screws. The driving motor 42 is fixedly connected to the upper surface of the mounting plate 321 by screws. The lower end of the active rotating rod 41 is connected to the upper surface bearing of the connecting bottom plate 31. The upper end of the active rotating rod 41 is penetrated by the mounting plate 321 and is welded and fixed to the coupling of the driving motor 42. The connecting member 43 includes a first active bevel gear 431, a first driven bevel gear 432, a first driven bevel gear 432, a first rotating rod 433, and a rotating gear 433. 34. The connecting members 43 of each active rotating rod 41 are arranged at intervals along the length direction of the active rotating rod 41. The first active bevel gear 431 is sleeved on the active rotating rod 41. The first driven bevel gear 432 is meshed with the first active bevel gear 431. One end of the first rotating rod 433 is connected to the first driven bevel gear 432. The rotating gear 434 is sleeved on the first rotating rod 433. The lifting gear plate 21 and the rotating gear 434 are meshed with each other. The length of the lifting gear plate 21 is greater than the spacing distance between the rotating gears 434 of the two upper and lower adjacent connecting members 43. The mounting rod 32 is welded and fixed with a connecting side plate 33. One end of the first rotating rod 433 away from the first driven bevel gear 432 is connected to the connecting side plate 33 bearing.

[0042] Reference Figure 1 and Figure 4 A limit assembly 5 is provided at the working platform 2, and the limit assembly 5 includes a reciprocating motor 51, a connecting rod 52, a limit gear 53 and a sliding rack 54. Each mounting rod 32 corresponds to a limit assembly 5. An auxiliary plate 22 is welded and fixed to the side wall of the working platform 2. The reciprocating motor 51 is fixedly connected to the auxiliary plate 22 by screws. One end of the connecting rod 52 passes through the auxiliary plate 22 and is welded and fixed to the coupling of the reciprocating motor 51. The limit gear 53 is sleeved on the connecting rod 52. An auxiliary groove 23 is provided on the side wall of the working platform 2. The sliding rack 54 is inserted in the auxiliary groove 23. The sliding rack 54 can slide in the auxiliary groove 23. The sliding rack 54 and the limit gear 53 are meshed with each other. A plurality of limit grooves 322 are provided through the side wall of the mounting rod 32 along its thickness direction. The limit grooves 322 are spaced apart along the height direction of the mounting rod 32. The sliding rack 54 can be inserted in the limit groove 322 and fit the side wall of the limit groove 322.

[0043] Reference Figure 4 A guide surface 541 is provided at one end of the sliding rack 54 away from the auxiliary groove 23 . The guide surface 541 is provided so that the sliding rack 54 can be quickly aligned with the limiting groove 322 and inserted into the limiting groove 322 .

[0044] Reference Figure 1 , Figure 5 and Figure 6, an anti-falling component 6 is also provided at each mounting rod 32, and the anti-falling component 6 includes a supporting tube 61, a first connecting plate 62, a second connecting plate 63 and a buffer spring 64. A yield groove 611 is provided on the upper surface of the supporting tube 61, and the first connecting plate 62 is fixedly connected to the bottom wall of the yield groove 611 by screws. Three first connecting plates 62 are installed in the yield groove 611 of each supporting tube 61, and each first connecting plate 62 is glued and fixed to a buffer spring 64 by glue. The end of the buffer spring 64 away from the first connecting plate 62 is glued and fixed to the second connecting plate 63 by glue. The width of the second connecting plate 63 is greater than the width of the supporting tube 61, and an insertion groove 631 is provided on the bottom wall of the second connecting plate 63. The supporting tube 61 can be inserted into the insertion groove 631, and a buffer pad 65 is fixed to the upper surface of the second connecting plate 63 by glue. In the embodiment of the present application, the buffer pad 65 is a rubber pad.

[0045] Reference Figure 5 , each anti-falling component 6 is correspondingly installed with a synchronous member 7, and the synchronous member 7 can drive the anti-falling component 6 to rotate to the bottom of the working platform 2; the synchronous member 7 includes a first synchronous rod 71, a second synchronous rod 72, a synchronous gear 73, a second active bevel gear 74 and a second driven bevel gear 75, one end of the first synchronous rod 71 is connected to the bearing of the connecting side plate 33, the synchronous gear 73 is sleeved on the first synchronous rod 71, the end of the first synchronous rod 71 away from the connecting side plate 33 is connected to the second active bevel gear 74, the second active bevel gear 74 is sleeved on the first synchronous rod 71, the second driven bevel gear 75 is meshed with the second active bevel gear 74, and one end of the second synchronous rod 72 is connected to the bearing of the connecting side plate 33, the synchronous gear 73 is sleeved on the first synchronous rod 71, and the second active bevel gear 74 is sleeved on the first synchronous rod 71. It is connected to the second driven bevel gear 75, the support cylinder 61 is welded and fixed to the second synchronization rod 72, and the side wall of the connecting side plate 33 is fixedly installed with a connecting block 76 by screws. The end of the second synchronization rod 72 away from the second driven bevel gear 75 is bearing-connected to the connecting block 76; the side wall of the lifting gear plate 21 is fixedly connected with the driven gear plate 24 by screws, and the driven gear plate 24 is located at the lower end of the lifting gear plate 21. The driven gear plate 24 can mesh with the synchronization gear 73. When the working platform 2 rises, the driven gear plate 24 drives the synchronization gear 73 to rotate, thereby making the first synchronization rod 71 and the second synchronization rod 72 rotate together, so that the support cylinder 61 rotates to the lower end of the working platform 2.

[0046] A method for using an adjustable elevator shaft working platform comprises the following steps:

[0047] Entering the elevator shaft 1: After entering the elevator shaft 1, the staff goes up to the working platform 2 through the connecting bottom plate 31;

[0048] Adjusting the working platform 2: starting the driving motor 42, the driving motor 42 drives the active rotating rod 41 to rotate, so that the connecting member 43 works, and the lifting gear plate 21 at the working platform 2 rises or falls under the action of the connecting member 43, thereby adjusting the height position of the working platform 2;

[0049] Fixing the working platform 2: When the working platform 2 reaches the desired position, the limit assembly 5 is operated to fix the height of the working platform 2, and the staff can start working.

[0050] The implementation principle of an adjustable elevator shaft 1 working platform 2 in the embodiment of the present application is as follows: a worker comes to the working platform 2 from the connecting bottom plate 31 at the elevator shaft 1, and then starts the driving motor 42. The driving motor 42 drives the active rotating rod 41 to rotate, so that the active bevel gear 431 drives the driven bevel gear 432 to rotate. After the first rotating rod 433 rotates, the rotating gear 434 drives the lifting gear plate 21 to rise, so as to adjust the height of the working platform 2. When the working platform 2 moves to the position where the worker needs to operate, the driving motor 42 is stopped, and then the reciprocating motor 51 is started, so that the connecting rod 52 drives the limiting gear 53 to rotate, and the sliding rack 54 slides in the auxiliary groove 23 and is inserted into the limiting groove 322 of the mounting rod 32. The sliding rack 54 fits with the inner wall of the limiting groove 322, so that it is difficult for the working platform 2 to continue to rise or fall, thereby improving the stability of the working platform 2 and making it safer for the workers when working.

[0051] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present application. Therefore, all equivalent changes made to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An adjustable elevator shaft working platform, comprising an elevator shaft (1) and a working platform (2) located in the elevator shaft (1); characterized in that: The elevator shaft (1) is provided with an adjustable lifting frame (3), the adjustable lifting frame (3) comprising a connecting bottom plate (31) and a plurality of mounting rods (32), all of the mounting rods (32) are connected to the connecting bottom plate (31), the working platform (2) is located above the connecting bottom plate (31), the side wall of the working platform (2) is provided with a plurality of lifting tooth plates (21), the adjustable lifting frame (3) is provided with a lifting assembly (4) for driving the working platform (2) to rise or fall, the lifting assembly (4) comprising a plurality of active rotating rods (41), a plurality of driving motors (42), and a plurality of connecting members (43), each of the mounting rods (32) corresponds to an active rotating rod (41) and a driving motor ( 42); the lower end of the active rotating rod (41) is rotatably connected to the connecting base plate (31); a mounting plate (321) is provided at one end of the mounting rod (32) away from the connecting base plate (31); the driving motor (42) is connected to the mounting plate (321); the other end of the active rotating rod (41) is connected to the coupling of the driving motor (42); the connecting member (43) is arranged along the length direction of the active rotating rod (41); each active rotating rod (41) is correspondingly provided with a plurality of connecting members (43); all the connecting members (43) jointly drive the lifting gear plate (21) to drive the working platform (2) to rise or fall; a limiting component (5) for limiting the lifting plate is provided at the working platform (2); Each of the mounting rods (32) is also provided with a plurality of anti-falling components (6), the anti-falling components (6) comprising a support tube (61), a first connecting plate (62), a second connecting plate (63) and a buffer spring (64), a surface of the support tube (61) is provided with a clearance groove (611), the first connecting plate (62) is connected to the inner wall of the clearance groove (611), one end of the buffer spring (64) is connected to the first connecting plate (62), and the other end of the buffer spring (64) is connected to the second connecting plate (63); the mounting rod (32) is provided with a synchronous component (7), the synchronous component (7) is connected to the anti-falling component (6), and each of the anti-falling components (6) corresponds to a synchronous component (7); The synchronous member (7) comprises a first synchronous rod (71), a second synchronous rod (72), a synchronous gear (73), a second active bevel gear (74) and a second driven bevel gear (75); one end of the first synchronous rod (71) is rotatably connected to the side wall of the connecting side plate (33); the synchronous gear (73) is sleeved on the first synchronous rod (71); the second active bevel gear (74) is sleeved on the first synchronous rod (71); the second driven bevel gear (75) and the second active bevel gear (74) are meshed with each other; the second synchronous rod (72) is connected to the second driven bevel gear (75); the other end of the second synchronous rod (72) is rotatably connected to the mounting rod (32); the lifting gear plate (21) is provided with a driven gear plate (24) for driving the synchronous gear (73); The length of the second connecting plate (63) is greater than the width of the supporting tube (61), and the bottom wall of the second connecting plate (63) is provided with an inserting groove (631), and the supporting tube (61) can be inserted into the inserting groove (631).

2. The adjustable elevator shaft working platform according to claim 1, characterized in that: The connecting member (43) comprises a first active bevel gear (431), a first driven bevel gear (432), a first rotating rod (433) and a rotating gear (434); the first active bevel gear (431) is sleeved on the active rotating rod (41); the first driven bevel gear (432) is meshed with the first active bevel gear (431); one end of the first rotating rod (433) is connected to the first driven bevel gear (432); the rotating gear (434) is sleeved on the first rotating rod (433) and is meshed with the lifting gear plate (21); a connecting side plate (33) is provided on the side wall of the mounting rod (32); the first rotating rod (433) is rotatably connected to the connecting side plate (33); the length of the lifting gear plate (21) is greater than the spacing between the rotating gears (434) between two adjacent connecting members (43).

3. The adjustable elevator shaft working platform according to claim 1, characterized in that: The limit assembly (5) comprises a reciprocating motor (51), a connecting rod (52), a limit gear (53) and a sliding rack (54); each of the mounting rods (32) corresponds to a limit assembly (5); an auxiliary plate (22) is arranged on the side wall of the working platform (2); the reciprocating motor (51) is connected to the auxiliary plate (22); the connecting rod (52) is connected to the coupling of the reciprocating motor (51); an auxiliary groove (23) is provided on the working platform (2); the sliding rack (54) is inserted into the auxiliary groove (23); the limit gear (53) is sleeved on the connecting rod (52) and meshed with the sliding rack (54); a plurality of limit grooves (322) for inserting the sliding rack (54) are arranged on the side wall of the mounting rod (32); the inner wall of the limit groove (322) can fit with the sliding rack (54).

4. The adjustable elevator shaft working platform according to claim 3, characterized in that: A guide surface (541) is provided at one end of the sliding rack (54) away from the end wall of the auxiliary groove (23).

5. The adjustable elevator shaft working platform according to claim 1, characterized in that: A buffer pad (65) is provided on a side of the second connecting plate (63) away from the first connecting plate (62).

6. A method for using the adjustable elevator shaft working platform according to any one of claims 1 to 5, characterized in that: The steps include: Entering the elevator shaft (1): After entering the elevator shaft (1), the staff goes up to the working platform (2) through the connecting bottom plate (31); Adjusting the working platform (2): starting the driving motor (42), the driving motor (42) drives the active rotating rod (41) to rotate, so that the connecting member (43) works, and the lifting gear plate (21) at the working platform (2) rises or falls under the action of the connecting member (43), thereby adjusting the height position of the working platform (2); Fixing the working platform (2): When the working platform (2) reaches the desired position, the limit assembly (5) is operated to fix the height of the working platform (2), and the staff can then start working.

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