Portable detachable insulation operation platform for operation and maintenance in cable well

Abstract

The invention discloses a portable detachable operation and maintenance insulation work platform in a cable well, and relates to the field of cable wells, the portable detachable operation and maintenance insulation work platform comprises a center platform frame, lateral sliding platforms, a supporting assembly and a supporting leg adjusting unit, by arranging the two lateral sliding platforms capable of sliding relative to the center platform frame, the width of the whole work platform can be flexibly adjusted, and the operation and maintenance efficiency is improved. The platform can adapt to cable wells with different widths, the platform is provided with the supporting assembly comprising the well wall attaching leg and the well mouth placing base as an upper support, meanwhile, the supporting leg adjusting unit comprising the supporting leg fixing sleeve and the adjustable supporting leg adjusting rod is arranged as a lower support, and by means of the up-down combined supporting mode, the supporting efficiency is improved. Particularly, the height of the supporting leg adjusting unit can be adjusted according to the well bottom condition, so that the platform is stably installed in a well, the platform is effectively prevented from shaking during operation, and the safety of operation and maintenance personnel is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cable wells, and in particular to a portable, detachable, insulated maintenance platform for cable wells. Background Technology

[0002] The protection measures for cable wells in existing power engineering projects are not adequate. Cable wells are often filled with silt and water, and workers are not effectively insulated during construction. The insulating mats used in cable well construction are mostly made of polyethylene and natural rubber, which are prone to deformation and breakage due to prolonged exposure to sunlight, thus losing their insulating function and failing to protect personal safety.

[0003] On the other hand, if the water depth in the well is too deep, the insulating mat cannot provide safety protection.

[0004] Furthermore, different cable wells have different widths, and fixed-size platforms are not very adaptable, requiring customization of various specifications, which makes them inconvenient to carry and use;

[0005] Secondly, the stability and safety of the temporary platform are difficult to guarantee, especially since there may be slopes or unevenness at the bottom of the well, the platform is prone to shaking and poses a safety hazard.

[0006] Furthermore, traditional platforms have a single method of fixing at the wellhead, and moving and adjusting their position is time-consuming and labor-intensive, affecting work efficiency.

[0007] The safety work platform of this application is made of insulating material and has a suspended and foldable structure that can be adjusted according to the width of the cable well. The support legs are telescopic, and the height of the safety work platform can be adjusted according to the on-site working conditions. Summary of the Invention

[0008] The purpose of this invention is to provide a portable, detachable cable well maintenance insulation work platform to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a portable and detachable cable well maintenance insulation operation platform, comprising a central platform frame and two lateral sliding platforms that slide relative to the central platform frame to both sides, wherein the lateral sliding platforms slide relative to the central platform frame by adjustment;

[0010] Each of the two lateral sliding platforms is provided with a support assembly on opposite sides. The support assembly includes a well wall fitting leg and a wellhead placement seat. The well wall fitting leg is fixedly connected to the wellhead placement seat by bolts. The wellhead placement seat is placed in the cable wellhead, and the well wall fitting leg is attached to the cable well wall.

[0011] The lateral sliding platform is equipped with support leg adjustment units on both the front and rear sides. Each support leg adjustment unit includes a support leg fixing sleeve and a support leg adjustment rod slidably connected in the support leg fixing sleeve. The support leg adjustment rod has multiple insertion holes at equal intervals, and insertion pins are inserted into the insertion holes.

[0012] Preferably, the lateral sliding platform consists of four side platform panels, and both ends of each side platform panel are chamfered at 45 degrees. The side platform panels are spliced ​​with adjacent side platform panels through the chamfering. The inner walls of the joints between adjacent side platform panels are fixedly connected with internal side platform connectors by bolts, and the joints between adjacent side platform panels are fixedly connected with external side platform connectors by bolts. The cooperation of the internal and external side platform connectors ensures the stability of the joints between adjacent side platform panels, thus completing the splicing of the side platform panels. A standing plate is installed on each side platform panel.

[0013] Preferably, a side platform connecting seat is installed on the side platform plate near the well wall fitting leg. Both sides of the side platform connecting seat are bolted with connecting reinforcing plates. The connecting reinforcing plates are used to ensure the stability of the connection between the side platform connecting seat and the side platform plate. One side of the side platform connecting seat is inserted into the well wall fitting leg with a through bolt. The well wall fitting leg and the side platform connecting seat are connected by the through bolt, thereby connecting the side platform plate and the well wall fitting leg. The working platform composed of the lateral sliding platform and the central platform frame is then installed between the two well wall fitting legs.

[0014] Preferably, the central platform frame consists of two central platform longitudinal beams and two central platform transverse beams. Both sides of the central platform longitudinal beams and central platform transverse beams are chamfered at 45 degrees. The central platform longitudinal beams are spliced ​​with the adjacent central platform transverse beams through chamfering. The joint between the central platform longitudinal beams and the central platform transverse beams is bolted to a platform connecting plate, which is used to connect the central platform longitudinal beams and the central platform transverse beams. A handle is installed on the outer side of the central platform transverse beam.

[0015] Preferably, a sliding connector is provided at the connection between the central platform frame and the lateral sliding platform. The sliding connector is fixed to the lateral platform plate by bolts. The central platform frame slides on the sliding connector. A synchronization unit is provided between the sliding connector and the central platform frame. The synchronization unit is used to connect the central platform frame and the sliding connector.

[0016] Preferably, the synchronization unit includes a synchronization base disposed at the bottom of the longitudinal beam of the central platform. A gear is rotatably connected to the synchronization base via a transmission shaft. Two racks mesh with the outer peripheral wall of the gear. One end of each rack is provided with a connecting end. The two connecting ends are respectively installed to two sliding connectors by bolts. The racks are installed with the corresponding sliding connectors. Guide rails are provided on both sides of the synchronization base, and the racks are slidably connected in the corresponding guide rails.

[0017] Preferably, the sliding connector is mounted to the support leg fixing sleeve via two support leg mounting plates, and the support leg mounting plates are bolted to both sides of the support leg fixing sleeve.

[0018] Preferably, a support block is fixedly connected to the inner wall of the support leg fixing sleeve, the support block has an inclined groove, and both the upper and lower ends of the plug are fixedly connected to contact blocks that fit into the inclined groove. The height of the support leg adjusting rod can be finely adjusted by adjusting the contact blocks to slide on the inner wall of the inclined groove.

[0019] Preferably, a movable unit is provided on both sides of the wellhead placement seat. The movable unit includes a movable bracket installed on the top of the wellhead placement seat by bolts. A pulley mounting plate is provided below the movable bracket, and a pulley body is installed below the pulley mounting plate. A sliding rod is fixedly connected to the pulley mounting plate. The sliding rod passes through the movable bracket and slides along the movable bracket to drive the pulley body to move. A fixed seat is fixedly connected to the movable bracket, and a bolt for fixing the sliding rod is threaded into the fixed seat.

[0020] Preferably, a rotating rod is rotatably connected to one side of the pulley mounting plate, and a contact seat is rotatably connected to the other end of the rotating rod. A guide rod is fixedly connected to the contact seat, and the guide rod is slidably connected to the inner wall of the movable bracket. The contact seat is located at the elevator shaft wall.

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. By setting two lateral sliding platforms that can slide relative to the central platform frame, the width of the entire working platform can be flexibly adjusted to adapt to cable wells of different widths, greatly improving the versatility and applicability of the platform. It eliminates the need to equip multiple platforms for wells of different sizes, reducing costs and handling difficulties.

[0023] 2. Dual support mechanism for high stability: The platform is equipped with a support assembly consisting of well wall-fitting legs and wellhead placement seats as the upper support, and a support leg adjustment unit consisting of support leg fixing sleeves and adjustable support leg adjustment rods as the lower support. This combined upper and lower support method, especially the support leg adjustment unit which can be height adjusted according to the well bottom conditions, makes the platform stable in the well, effectively preventing the platform from shaking during operation and ensuring the safety of maintenance personnel.

[0024] 3. Adjustable support height to adapt to uneven well bottoms: The support leg adjustment unit allows for fine-tuning of the extension height of the support leg adjustment rod through the cooperation of the plug-in column and the inclined groove on the support block. This design enables the platform to adapt well to unevenness or slope that may exist at the bottom of the well. Fine-tuning ensures that all four support points can effectively contact the bottom of the well, greatly improving the stability and safety of the platform under complex well bottom conditions.

[0025] 4. Synchronous sliding mechanism for convenient and reliable adjustment: Equipped with a synchronization unit, when adjusting one lateral sliding platform, the other lateral sliding platform automatically moves in the opposite direction via a rack and pinion transmission. This ensures smooth and symmetrical adjustment of the platform width, avoiding the inconvenience of manually adjusting both sides separately and the potential for asynchrony. It also ensures that the support leg adjustment units are always symmetrically distributed, optimizing the support effect.

[0026] 5. Modular and detachable design for excellent portability: Both the central platform frame and the side sliding platforms are assembled from standardized beams or plates using bolts and connectors, and the support components are also detachable. This modular design allows the entire platform to be disassembled into smaller parts, facilitating transportation and carrying to the work site, making it particularly suitable for use in space-constrained cable well environments. Handles on the platform frame further simplify handling.

[0027] 6. Enhanced Mobility and Improved Efficiency: By incorporating a movable unit with pulleys on the support assembly, the platform can be easily moved along the wellhead when the work position needs to be adjusted. Once the new position is reached, the pulleys can be retracted, allowing the wellhead mounting base to sit stably at the wellhead. This feature eliminates the need for repeated disassembly and assembly of the platform, significantly improving efficiency when working on multiple wellheads continuously or moving along long wells.

[0028] 7. Stable connection structure and strong integrity: All components of the platform, such as the side platform panels, the central platform frame beams, and the support components and the platform, are reliably fixed by bolts, connecting plates, etc., ensuring the overall structural strength and rigidity of the assembled platform, which can withstand the loads of workers and tools. Attached Figure Description

[0029] Figure 1A schematic diagram of the overall structure of the invention;

[0030] Figure 2 This is a schematic diagram of the invention's breakdown.

[0031] Figure 3 This is a schematic diagram showing the connection between the platform frame of the invention center and the lateral sliding platform;

[0032] Figure 4 A schematic diagram showing the connection between the lateral sliding platform and the support components of the invention;

[0033] Figure 5 A schematic diagram showing the connection between the synchronization unit and the sliding connector;

[0034] Figure 6 A schematic diagram of the structure of the sliding connector for the invention;

[0035] Figure 7 This is a schematic diagram of the supporting component structure for the invention;

[0036] Figure 8 A schematic diagram of the invention's mobile unit structure;

[0037] Figure 9 A schematic diagram showing the connection between the support leg adjustment unit and the sliding connector;

[0038] Figure 10 This is a schematic diagram of the structure of the support leg adjustment unit for the invention.

[0039] In the diagram: 1. Central platform frame; 11. Central platform longitudinal beam; 12. Central platform transverse beam; 13. Platform connecting plate; 14. Handle; 2. Lateral sliding platform; 21. Side platform plate; 22. Side platform internal connector; 23. Side platform external connector; 3. Synchronization unit; 31. Synchronization base; 32. Gear; 33. Rack; 331. Connecting end; 34. Guide rail; 4. Support assembly; 41. Well wall fitting leg; 42. Wellhead placement seat; 5. Side platform connecting plate. 51. Connecting Reinforcing Plate; 6. Moving Unit; 61. Moving Bracket; 611. Fixed Base; 62. Pulley Mounting Plate; 63. Pulley Body; 64. Sliding Rod; 65. Rotating Rod; 66. Contact Seat; 67. Guide Rod; 7. Support Leg Adjustment Unit; 71. Support Leg Fixing Sleeve; 72. Support Leg Adjustment Rod; 721. Insertion Hole; 73. Support Block; 731. Inclined Slot; 74. Contact Block; 75. Insertion Column; 8. Sliding Connector; 81. Support Leg Mounting Plate. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] This invention provides, for example Figures 1-10 The portable, detachable cable shaft maintenance insulation work platform shown includes a central platform frame 1 and two lateral sliding platforms 2 that slide relative to the central platform frame 1 on both sides. By adjusting the sliding of the lateral sliding platforms 2 relative to the central platform frame 1, the width of the work platform formed by the lateral sliding platforms 2 and the central platform frame 1 can be adjusted according to the width of the elevator shaft, making it suitable for operations in elevator shafts of different widths.

[0042] Each of the two lateral sliding platforms 2 has a support component 4 on its opposite side. The support component 4 includes a well wall fitting leg 41 and a well opening placement seat 42. The well wall fitting leg 41 is fixedly connected to the well opening placement seat 42 by bolts. The well opening placement seat 42 is placed in the cable well opening, and the well wall fitting leg 41 is attached to the cable well wall.

[0043] The central platform frame 1 and the lateral sliding platform 2, located between the two support components 4, are supported by the well wall fitting leg 41 and the wellhead placement seat 42, making it convenient for people to stand on the central platform frame 1 and the lateral sliding platform 2 to carry out operations.

[0044] Support leg adjustment units 7 are installed on both the front and rear sides of the lateral sliding platform 2. The support leg adjustment unit 7 includes a support leg fixing sleeve 71 and a support leg adjustment rod 72 slidably connected in the support leg fixing sleeve 71. The support leg adjustment rod 72 is adjusted to slide along the support leg fixing sleeve 71 until the support leg adjustment rod 72 contacts the bottom of the elevator shaft. The support leg adjustment rod 72 and the support leg fixing sleeve 71 cooperate to support the central platform frame 1 and the lateral sliding platform 2. Multiple insertion holes 721 are opened at equal intervals on the support leg adjustment rod 72, and insertion posts 75 are inserted into the insertion holes 721.

[0045] By adjusting the support leg adjusting rod 72 to a suitable support height, the plug-in post 75 is inserted into the support leg adjusting rod 72 to complete the connection between the support leg adjusting rod 72 and the support block 73, thereby limiting the position of the support leg adjusting rod 72, thus ensuring the stability of the support leg adjusting rod 72 and the support leg fixing sleeve 71, and thus ensuring the support of the support leg adjusting rod 72 and the support leg fixing sleeve 71 for the central platform frame 1 and the lateral sliding platform 2;

[0046] A support block 73 is fixedly connected to the inner wall of the support leg fixing sleeve 71. The support block 73 has an inclined groove 731. Both the upper and lower ends of the plug-in post 75 are fixedly connected to contact blocks 74 that fit with the inclined groove 731. The height of the support leg adjusting rod 72 can be finely adjusted by adjusting the contact blocks 74 to slide on the inner wall of the inclined groove 731.

[0047] By adjusting the sliding of the contact block 74 in the support block 73, the contact block 74 slides along the inclined side of the inclined groove 731, causing the height of the plug-in column 75 to move relative to the support leg fixing sleeve 71, thereby causing the support leg adjusting rod 72 to slide relative to the support leg fixing sleeve 71, adjusting the height of the support leg adjusting rod 72, improving the adjustment accuracy of the support leg adjusting rod 72, and further ensuring the support of the central platform frame 1 and the lateral sliding platform 2. At the same time, when encountering an elevator shaft with a slope, the sliding of the plug-in column 75 can be adjusted to ensure that all four support leg adjusting rods 72 are in contact with the bottom of the elevator shaft.

[0048] When the plug 75 is inserted into the support leg adjusting rod 72, the plug 75 and the contact block 74 are pushed to slide in the inclined groove 731. The contact block 74 slides along the inclined groove 731 into the support leg fixing sleeve 71. At this time, the plug 75 moves downward. Under the action of gravity, the support leg adjusting rod 72 also moves downward. When the support leg adjusting rod 72 contacts the bottom of the elevator shaft, the plug 75 can no longer be pushed. At this time, the plug 75 supports the support leg adjusting rod 72 under the insertion of the plug 75. At the same time, the contact block 74 contacts the support block 73 to further provide support force.

[0049] When a person stands on the central platform frame 1 and the lateral sliding platform 2, the downward pressure exerted on the support leg adjusting rod 72 causes the support block 73 to exert downward pressure on the upper contact block 74, which is decomposed into rightward and downward pressures. This causes the lower contact block 74 to experience downward and rightward forces. At this time, the lower contact block 74 exerts downward and rightward thrusts on the support block 73. Under the action of the support block 73, the contact block 74 is constrained, thereby supporting the support block 73 and the support leg fixing sleeve 71. Simultaneously, the support leg adjusting rod 72 exerts downward pressure on the insertion post 75, causing the insertion post 75 to press against the support leg adjusting rod 72. The insertion post 75 supports the support leg adjusting rod 72, and the pressing between the insertion post 75 and the support leg adjusting rod 72 further ensures the stability of the insertion post 75 and the stable connection between the support leg adjusting rod 72 and the support leg fixing sleeve 71.

[0050] To further ensure the stability of the plug-in post 75, a bolt can be installed on the outer wall of the support leg fixing sleeve 71 corresponding to the plug-in post 75. After the position of the plug-in post 75 is adjusted, the plug-in post 75 is further restricted by rotating the bolt and pressing it against the plug-in post 75, thus ensuring the stability of the plug-in post 75 and making the support of the support leg adjusting rod 72 through the plug-in post 75 stable.

[0051] The lateral sliding platform 2 consists of four side platform panels 21, with both ends of each side platform panel 21 having a 45-degree chamfer. The side platform panels 21 are spliced ​​with adjacent side platform panels 21 through the chamfer. The inner walls of the joints between adjacent side platform panels 21 are fixedly connected with internal side platform connectors 22 by bolts. The joints between adjacent side platform panels 21 are also fixedly connected with external side platform connectors 23 by bolts. The cooperation between the internal side platform connectors 22 and the external side platform connectors 23 ensures the stability of the joints between adjacent side platform panels 21, thus completing the splicing of the side platform panels 21. A standing plate is installed on the side platform panel 21 to facilitate human standing and operation. The standing plate is made of insulating material.

[0052] A side platform plate 21 near the well wall fitting leg 41 is equipped with a side platform connecting seat 5. Both sides of the side platform connecting seat 5 are bolted with connecting reinforcing plates 51. The connecting reinforcing plates 51 are used to ensure the stability of the connection between the side platform connecting seat 5 and the side platform plate 21. One side of the side platform connecting seat 5 is inserted into the well wall fitting leg 41 with a through bolt. The well wall fitting leg 41 and the side platform connecting seat 5 are connected by the through bolt, thereby connecting the side platform plate 21 and the well wall fitting leg 41. The working platform composed of the lateral sliding platform 2 and the central platform frame 1 is then installed between the two well wall fitting legs 41.

[0053] The central platform frame 1 consists of two central platform longitudinal beams 11 and two central platform transverse beams 12. Both sides of the central platform longitudinal beams 11 and central platform transverse beams 12 are chamfered at 45 degrees. The central platform longitudinal beams 11 and the adjacent central platform transverse beams 12 are spliced ​​by chamfering. The joint between the central platform longitudinal beams 11 and central platform transverse beams 12 is bolted to a platform connecting plate 13. The platform connecting plate 13 is used to connect the central platform longitudinal beams 11 and central platform transverse beams 12. A handle 14 is installed on the outer side of the central platform transverse beam 12.

[0054] When the side platform panel 21 is stored on the central platform frame 1, the entire work platform can be easily lifted and moved by lifting the handles 14 on the two central platform transverse beams 12.

[0055] A sliding connector 8 is provided at the connection between the central platform frame 1 and the side sliding platform 2. The sliding connector 8 is fixed to the side platform plate 21 by bolts. The central platform frame 1 slides on the sliding connector 8. A synchronization unit 3 is provided between the sliding connector 8 and the central platform frame 1. The synchronization unit 3 is used to connect the central platform frame 1 and the sliding connector 8, and the synchronization unit 3 is used to drive the two side sliding platforms 2 to move synchronously relative to the central platform frame 1.

[0056] Example 1: The synchronization unit 3 includes a synchronization base 31 set at the bottom of the longitudinal beam 11 of the central platform. A gear 32 is rotatably connected to the synchronization base 31 via a transmission shaft. Two racks 33 mesh with the outer peripheral wall of the gear 32. One end of the rack 33 is provided with a connecting end 331. The two connecting ends 331 are respectively installed with two sliding connectors 8 by bolts. The racks 33 are installed with the corresponding sliding connectors 8. Guide rails 34 are provided on both sides of the synchronization base 31. The racks 33 are slidably connected in the corresponding guide rails 34.

[0057] The guide rail 34 is used to limit the sliding stability of the rack 33. When one of the lateral sliding platforms 2 is moved by pulling, the sliding connector 8 fixedly connected to the lateral sliding platform 2 moves accordingly, so that the sliding connector 8 moves relative to the central platform frame 1, causing the rack 33 to slide along the guide rail 34. Under the sliding of the rack 33, the gear 32 meshing with it rotates on the synchronous base 31. Under the rotation of the gear 32, the two racks 33 move synchronously in opposite directions, thereby causing the two sliding connectors 8 to drive the lateral sliding platforms 2 to move in opposite directions relative to the central platform frame 1, ensuring the synchronous movement of the two lateral sliding platforms 2.

[0058] As the two lateral sliding platforms 2 move synchronously relative to the central platform frame 1, the support leg adjustment units 7 installed on both sides of the lateral sliding platforms 2 through the sliding connectors 8 move accordingly, so that the support leg adjustment units 7 are symmetrically distributed on both sides of the work platform, ensuring the stability of the support leg adjustment units 7 in supporting the work platform.

[0059] The sliding connector 8 is installed on the support leg fixing sleeve 71 by two support leg mounting plates 81. The support leg mounting plates 81 are installed on both sides of the support leg fixing sleeve 71 by bolts.

[0060] The support leg adjustment unit 7 is fixedly installed to the lateral sliding platform 2 via the sliding connector 8 and the support leg mounting plate 81.

[0061] Example 2: Movable units 6 are provided on both sides of the wellhead placement base 42. The movable unit 6 includes a movable bracket 61 installed on the top of the wellhead placement base 42 by bolts. A pulley mounting plate 62 is provided below the movable bracket 61. A pulley body 63 is installed below the pulley mounting plate 62. A sliding rod 64 is fixedly connected to the pulley mounting plate 62. The sliding rod 64 passes through the movable bracket 61 and slides along the movable bracket 61 to drive the pulley body 63 to move. A fixed seat 611 is fixedly connected to the movable bracket 61. A bolt for fixing the sliding rod 64 is threaded into the fixed seat 611.

[0062] When the wellhead placement seat 42 is attached to the elevator wellhead, the work is carried out on the working platform composed of the central platform frame 1 and the lateral sliding platform 2. After the work is completed, the wellhead placement seat 42 is pulled to slide along the sliding rod 64, so that the pulley body 63 contacts the elevator inlet, supporting the wellhead placement seat 42. The sliding rod 64 is fixed in the fixed seat 611 with bolts, and then the working platform is supported by the pulley body 63. At this time, the working platform can slide along the wellhead through the pulley body 63, and the working platform can be quickly moved to the next work location.

[0063] When adjusted to the designated position, the sliding rod 64 is released, causing it to slide along the movable support 61. This causes the pulley body 63 to move relative to the movable support 61 and the wellhead placement seat 42 until the wellhead placement seat 42 contacts the elevator wellhead. At this point, the contact between the wellhead placement seat 42 and the wellhead prevents the work platform from moving.

[0064] It is particularly important to emphasize that, in order to facilitate the position adjustment of the pulley body 63, a cylinder or electric push rod or other driving component can be installed on the movable support 61. The driving component controls the sliding rod 64 to slide relative to the movable support 61, so that the movable support 61 drives the wellhead placement seat 42 to slide along the sliding rod 64, thereby controlling the wellhead placement seat 42 to separate from or contact the wellhead, which facilitates the movement and placement of the work platform.

[0065] A rotating rod 65 is rotatably connected to one side of the pulley mounting plate 62, and a contact seat 66 is rotatably connected to the other end of the rotating rod 65. A guide rod 67 is fixedly connected to the contact seat 66, and the guide rod 67 is slidably connected to the inner wall of the movable bracket 61. The contact seat 66 is located at the elevator shaft wall.

[0066] When the pulley mounting plate 62 moves downward, it pushes the rotating rod 65 to rotate, which in turn pushes the contact seat 66 to slide relative to the movable bracket 61 through the guide rod 67, causing the contact seat 66 to move away from the shaft wall. When the pulley mounting plate 62 moves upward, it pulls the rotating rod 65, which in turn pulls the contact seat 66 toward the shaft wall. When the shaft opening placement seat 42 contacts the shaft opening, the contact seat 66 contacts the shaft wall. Thus, the shaft opening placement seat 42 and the contact seat 66 provide double fixation, ensuring the stability of the working platform relative to the elevator shaft.

[0067] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable detachable cable well operation and maintenance insulating work platform, characterized in that, The utility model provides a center platform frame (1) and two lateral sliding platforms (2) which slide to two sides respectively relative to the center platform frame (1), the lateral sliding platform (2) is adjusted to slide relative to the center platform frame (1); The opposite side of the two lateral sliding platforms (2) is provided with a support assembly (4), the support assembly (4) comprises a well wall fitting leg (41) and a well mouth placing seat (42), the well wall fitting leg (41) is fixedly connected with the well mouth placing seat (42) through bolts, the well mouth placing seat (42) is placed in the cable well mouth, and the well wall fitting leg (41) is fitted in the cable well wall; The front and rear sides of the lateral sliding platform (2) are provided with support leg adjusting units (7), the support leg adjusting unit (7) comprises a support leg fixing sleeve (71) and a support leg adjusting rod (72) slidingly connected in the support leg fixing sleeve (71), a plurality of insertion holes (721) are equidistantly arranged on the support leg adjusting rod (72), and an insertion column (75) is inserted into the insertion hole (721).

2. The portable detachable cable well operation and maintenance insulating work platform according to claim 1, characterized in that, The lateral sliding platform (2) is composed of four side platform plate pieces (21), both ends of the side platform plate piece (21) are forty-five degree cut angles, the side platform plate piece (21) is spliced with adjacent side platform plate pieces (21) through cut angles, the inner wall of the butt joint of adjacent side platform plate pieces (21) is fixedly connected with a side platform internal connecting piece (22) through bolts, the butt joint of adjacent side platform plate pieces (21) is fixedly connected with a side platform external connecting piece (23) through bolts, the stability of the connecting position of adjacent side platform plate pieces (21) is ensured through cooperation of the side platform internal connecting piece (22) and the side platform external connecting piece (23), the splicing of the side platform plate piece (21) is completed, and a standing plate is installed on the side platform plate piece (21).

3. The portable detachable cable well operation and maintenance insulating work platform according to claim 2, characterized in that, The side platform plate piece (21) close to the well wall fitting leg (41) side is provided with a side platform connecting seat (5), connecting reinforcing plates (51) are installed on the two sides of the side platform connecting seat (5) through bolts, the connecting reinforcing plates (51) are used for ensuring the stability of the connection between the side platform connecting seat (5) and the side platform plate piece (21), a through bolt is inserted into the well wall fitting leg (41) on one side of the side platform connecting seat (5), the well wall fitting leg (41) is connected with the side platform connecting seat (5) through the through bolt, then the side platform plate piece (21) is connected with the well wall fitting leg (41), and finally the operation platform composed of the lateral sliding platform (2) and the center platform frame (1) is installed between the two well wall fitting legs (41).

4. The portable detachable cable well operation and maintenance insulating work platform according to claim 1, characterized in that, The center platform frame (1) has two center platform longitudinal beams (11) and two center platform transverse beams (12), both sides of the center platform longitudinal beam (11) and the center platform transverse beam (12) are forty-five degree angle, the center platform longitudinal beam (11) and the adjacent center platform transverse beam (12) are spliced by the angle, the center platform longitudinal beam (11) and the center platform transverse beam (12) are connected by the platform connecting plate (13), the center platform longitudinal beam (11) and the center platform transverse beam (12) are connected by the platform connecting plate (13), the center platform transverse beam (12) is installed on one side of the outside, and the handle (14) is installed.

5. The portable detachable cable well operation and maintenance insulating work platform according to claim 1, characterized in that, The center platform frame (1) is provided with a sliding connector (8) at the connection with the lateral sliding platform (2), the sliding connector (8) is fixed with the side platform plate (21) by bolts, the center platform frame (1) slides on the sliding connector (8), and a synchronous unit (3) is arranged between the sliding connector (8) and the center platform frame (1), the synchronous unit (3) is used for connecting the center platform frame (1) and the sliding connector (8).

6. The portable detachable cable well operation and maintenance insulating work platform according to claim 5, characterized in that, The synchronous unit (3) comprises a synchronous base (31) arranged at the bottom of the center platform longitudinal beam (11), a gear (32) is rotatably connected to the synchronous base (31) through a transmission shaft, the outer wall of the gear (32) is engaged with two racks (33), one end of the rack (33) is provided with a connecting end (331), and the two connecting ends (331) are respectively installed with the two sliding connectors (8) through bolts, the rack (33) and the corresponding sliding connector (8) are installed, and the two sides of the synchronous base (31) are provided with guide rails (34), and the rack (33) is slidably connected in the corresponding guide rail (34).

7. The portable detachable cable well operation and maintenance insulating work platform according to claim 6, characterized in that, The sliding connector (8) is installed with the support leg fixing sleeve (71) through two support leg mounting plates (81), and the support leg mounting plate (81) is installed on both sides of the support leg fixing sleeve (71) through bolts.

8. The portable detachable cable well operation and maintenance insulating work platform according to claim 1, characterized in that, The inner wall of the support leg fixing sleeve (71) is fixedly connected with a support block (73), the support block (73) is provided with an inclined groove (731), and the upper and lower ends of the plug-in column (75) are fixedly connected with contact blocks (74) abutting the inclined groove (731). The height of the support leg adjusting rod (72) is fine adjusted by adjusting the sliding of the contact block (74) in the inner wall of the inclined groove (731).

9. The portable detachable cable well operation and maintenance insulating work platform according to claim 1, characterized in that, Both sides of the wellhead placing seat (42) are provided with a moving unit (6), the moving unit (6) includes a moving support (61) mounted on the top of the wellhead placing seat (42) through bolts, a pulley mounting plate (62) is arranged below the moving support (61), a pulley body (63) is mounted below the pulley mounting plate (62), a sliding rod (64) is fixedly connected on the pulley mounting plate (62), the sliding rod (64) penetrates through the moving support (61) and slides along the moving support (61) to drive the pulley body (63) to move, a fixing seat (611) is fixedly connected on the moving support (61), and a bolt for fixing the sliding rod (64) is screwedly connected in the fixing seat (611).

10. The portable detachable cable well operation and maintenance insulating work platform according to claim 9, characterized in that, One side of the pulley mounting plate (62) is rotatably connected with a rotating rod (65), the other end of the rotating rod (65) is rotatably connected with a contact seat (66), the contact seat (66) is fixedly connected with a guide rod (67), the guide rod (67) is slidably connected on the inner wall of the moving support (61), and the contact seat (66) corresponds to the elevator shaft wall.

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