Safety protection structure for electric power overhaul operation

Abstract

Relates to the field of electric power overhaul equipment and discloses a safety protection structure for electric power overhaul operation. Comprising a sliding frame body arranged in an electric power well body, a lifting platform arranged on the sliding frame body and used for allowing workers to stand on, and a hoisting unit arranged at the upper end of the sliding frame body and used for driving the lifting platform to move up and down, and further comprises a protection unit, the lifting platform is arranged at the upper end of the sliding frame body and is connected with the lifting platform; the cleaning unit is arranged at the upper end of the sliding frame body and located above the protection unit; according to the electric power well, workers can be conveniently conveyed to the bottom of the electric power well body, the protection unit is used for sealing and protecting a well mouth and blocking falling rocks and sundries, and the sundries can be prevented from falling into the electric power well body; impurities can be prevented from hurting maintenance personnel working on the lower portion of the electric power well body, and the safety of underground workers is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance equipment, in particular to a safety protection structure for electric power maintenance operations. Background Art

[0002] With the continuous development of urban construction and various engineering construction, for the needs of safety and aesthetics, cables are no longer installed in the air, but are basically laid underground. Among them, a few cables are still buried directly in the soil in the traditional way. However, in places with larger electrical concentrations, there are often more than 100 cables. Using this direct laying method on the ground, the cables buried in this way obviously cannot meet the requirements in all aspects, and the maintenance is inconvenient. In addition, there are defects such as low safety, large buried area, backward connection joints, and easy cable entanglement. Therefore, in most cases, cables and weak wires (or low-voltage wires) are arranged separately and orderly in reinforced concrete pipes and equipped with PVC pipes to be buried in the soil. Sections of cable pipes are tightly connected. Generally, a cable inspection well (hand hole well or manhole well) is set up every 50 meters to 100 meters to facilitate the staff to install the line, turn the connection and repair the cable.

[0003] The existing equipment has the following disadvantages: when performing maintenance work on the cables, maintenance personnel need to go down to the bottom of the power well to inspect and repair the cables at the bottom of the power well. Since the power well is deep, it is not convenient for the staff to go down to the bottom of the well, and the traditional maintenance protection device does not have a wellhead protection device. When encountering severe windy weather, the debris at the wellhead is blown, causing the debris to fall from the wellhead into the well, which will injure the staff in the well, posing certain safety hazards.

[0004] Therefore, the present application now proposes a safety protection structure for power maintenance operations to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a safety protection structure for power maintenance operations to solve the problem that the above-mentioned wellhead protection device is not set. When encountering severe windy weather, the debris at the wellhead will be blown into the well from the wellhead, which will injure the workers in the well and pose certain safety hazards.

[0006] To achieve the above object, the present invention provides the following technical solution: a safety protection structure for power maintenance work, comprising a sliding frame arranged inside the power well body, a lifting platform arranged on the sliding frame for workers to stand, and a hoisting unit arranged at the upper end of the sliding frame for driving the lifting platform to move up and down, and also comprising:

[0007] A protection unit, arranged at the upper end of the sliding frame and connected to the lifting platform, for protecting the wellhead of the power well body;

[0008] A cleaning unit, arranged at the upper end of the sliding frame and located above the protection unit, for cleaning debris on the protection unit;

[0009] The lifting platform comprises:

[0010] A mounting plate, which is arranged on the sliding frame and connected to the protection unit. When the hoisting unit drives the mounting plate to move downward, the mounting plate drives the protection unit to seal the wellhead;

[0011] A control device, arranged on the mounting plate;

[0012] A protection frame is arranged on the inner side of the mounting plate and connected to the cleaning unit. When the protection unit seals the wellhead, the hoisting unit stops moving downward, the control device drives the protection frame to move downward, and the protection frame drives the cleaning unit to move to the middle of the wellhead.

[0013] Wherein, the mounting plate is L-shaped and a lifting frame is arranged on a side close to the sliding frame, the lifting frame is adjustably arranged on the sliding frame, and the control device is connected to the protective frame.

[0014] Wherein, the control device comprises a hydraulic cylinder fixed on the mounting plate and a stabilizing rod fixed on the mounting plate and symmetrically arranged with respect to the hydraulic cylinder;

[0015] The top end of the hydraulic cylinder is fixedly connected to the protective frame;

[0016] The protective frame is arranged on the stabilizing rod;

[0017] A guide block is provided on one side of the protection frame close to the mounting plate;

[0018] A guiding groove for movement of the guiding block is provided at a position of the mounting plate corresponding to the guiding block.

[0019] The protection unit includes a first protection frame which is adjustably arranged on one side above the wellhead and connected to the sliding frame, a second protection frame which is adjustably arranged on the other side above the wellhead and connected to the sliding frame, and a protection net fixed inside the first protection frame and the second protection frame, and the first protection frame and the second protection frame are both connected to the mounting plate through a first pull rope;

[0020] The sliding frame is provided with a first guide roller for guiding the first pull rope;

[0021] The outer sides of the first protective frame and the second protective frame are both fixed with fixing blocks for installing the first pull rope;

[0022] The sliding frame body is provided with a supporting member for supporting the first protective frame and the second protective frame;

[0023] A wire fixing plate for installing the first pull rope is fixed on the installation plate.

[0024] Wherein, the support member comprises an extrusion block fixed on the first protective frame and the second protective frame and a mounting rod fixed on the sliding frame and symmetrically arranged with respect to the first protective frame and the second protective frame;

[0025] The extrusion block is sleeved on the mounting rod;

[0026] The mounting rod is located between the sliding frame and the extrusion block and is sleeved with a first elastic member.

[0027] A plug board is fixed to one side of the second protective frame close to the first protective frame, and a slot for plugging the plug board is provided at a position of the first protective frame corresponding to the plug board.

[0028] The cleaning unit comprises a connecting frame fixed to the upper end of the sliding frame body and symmetrically arranged with respect to the first protective frame and the second protective frame, a sliding rod fixed between the two connecting frames, a sliding block sleeved on the sliding rod, a cleaning plate fixed between the two sliding blocks and arranged in an arc shape above the protective net, and a second elastic member sleeved on the sliding rod for supporting the sliding block;

[0029] The cleaning plate is connected to the protection frame via a second pull rope;

[0030] The sliding frame is fixedly provided with a second guide wire roller for guiding the second pull rope at a position in the middle of the wellhead;

[0031] The length of the second draw cord is longer than the length of the first draw cord.

[0032] Wherein, the sliding frame body comprises a fixed plate, a frame-shaped fixed frame fixed at the lower end of the fixed plate, and a guide rod fixed at the lower end of the fixed plate and located between the two fixed frames;

[0033] The lifting frame is slidably sleeved on the guide rod;

[0034] The fixing plate is fixed to the upper end of the power well body by bolts.

[0035] Wherein, a slider is fixed at the lower end of each of the first protection frame and the second protection frame;

[0036] The fixed plate is provided with a limiting groove for the movement of the slider at a position corresponding to the slider;

[0037] The upper end of the fixing plate is provided with a wire releasing groove for the first pull rope to move.

[0038] The hoisting unit includes a motor fixed to the upper end of the fixed plate, a rotating shaft arranged at the power output end of the motor, a wire take-up roller fixed to the rotating shaft, a wire take-up frame arranged at the upper end of the fixed plate and sleeved on the wire take-up roller, and a hoisting rope arranged on the wire take-up roller for driving the lifting frame to move up and down;

[0039] A lifting ring is fixed on the upper end of the lifting frame, and the lifting rope loop is arranged on the lifting ring;

[0040] The take-up frame is provided with a conductor plate for guiding the hoisting rope;

[0041] A support seat for supporting the rotating shaft is arranged at the upper end of the fixing plate.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] 1. When it is necessary to inspect and repair power equipment such as cables at the lower end of the power well body, the sliding frame is placed from the wellhead to the inside of the power well body. The height of the sliding frame can be set according to the depth of the power well body, so that the lower end of the sliding frame is connected to the bottom of the power well body, the lifting platform is fixed on the sliding frame, and then the lifting platform is connected to the hoisting unit. The maintenance personnel stand on the protection frame, and then the hoisting unit drives the installation plate to move downward, which is convenient for transporting the personnel to the bottom of the power well body. In the process of the installation plate moving downward, it drives the protection unit to move horizontally at the upper end of the wellhead, so that the protection unit can be lifted and lowered. The protection unit seals and protects the wellhead, blocks falling rocks and debris, prevents debris from falling into the interior of the power well body, and prevents debris from causing harm to maintenance personnel working in the lower part of the power well body, thereby ensuring the safety of underground workers. When the protection unit seals the wellhead, the lifting unit stops working. At this time, the protection frame is driven by the control device to move downward on the inner side of the mounting plate, and then the downward movement of the protection frame will drive the cleaning unit to move, and when the protection frame moves to the lower end, the cleaning unit moves to the middle position of the wellhead, which can facilitate the subsequent cleaning of debris that has fallen on the protection unit.

[0044] 2. In the present invention, when the hydraulic cylinder drives the protective frame to move downward, the second pull rope pulls the cleaning plate to move toward the middle position of the wellhead, and then the second pull rope is placed in the gap between the first protective frame, the second protective frame and the fixed frame, so that the cleaning plate can be easily pulled to move above the protective net. When protecting the wellhead, the first protective frame and the second protective frame are driven by the first pull rope to seal the wellhead, and then the second pull rope pulls the cleaning plate to move above the protective net, and the cleaning plate seals the connection point of the first protective frame and the second protective frame. The cleaning plate is arranged in an arc shape, so that the debris that falls into the middle position of the wellhead can slide onto the protective net, which is convenient for subsequent cleaning work. When the two cleaning plates move toward each other, the sliding block squeezes the second elastic member. When the staff has finished the maintenance work, the hydraulic cylinder first drives the protection frame to move up, and then the second elastic member drives the cleaning plate to move to the side away from the wellhead, pushing the debris that falls on the protection net to the outside, and can push the debris out of the wellhead position, and can clean the debris on the protection net to prevent the first protection frame and the second protection frame from opening during the process of the protection frame driving the staff to move up, and the debris on the first protection frame and the second protection frame falling from the protection net and injuring the staff on the protection frame; when the cleaning plate is reset, the hoisting unit drives the lifting frame to move up, and the wire fixing plate on the mounting plate drives the first pull rope to move up, and at this time the first elastic member drives the first protection frame and the second protection frame to do a reset movement to open the wellhead, making it convenient for the staff to move out from the inside of the power well body. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the main structure in one embodiment of the present invention;

[0046] Figure 2 It is a schematic diagram of a top view of a structure in one embodiment of the present invention;

[0047] Figure 3 It is a schematic diagram of a cross-section structure in one embodiment of the present invention;

[0048] Figure 4 It is a schematic diagram of the structure of a protective device in one embodiment of the present invention;

[0049] Figure 5 This is a schematic diagram of the structure of a protection unit in one embodiment of the present invention;

[0050] Figure 6 This is a schematic diagram of the structure of a lifting platform in one embodiment of the present invention;

[0051] Figure 7 This is a schematic diagram of the structure of a protection unit in one embodiment of the present invention;

[0052] Figure 8 It is a structural schematic diagram of a sliding frame in one embodiment of the present invention;

[0053] Fig. 9 It is a structural schematic diagram of a hoisting unit in one embodiment of the present invention;

[0054] Fig.10 It is a structural schematic diagram of a first protective frame in one embodiment of the present invention;

[0055] Fig.11 It is a structural schematic diagram of a cleaning unit in one embodiment of the present invention;

[0056] Fig.12 It is a schematic diagram of the structure of the connection between the hoisting unit and the lifting frame in one embodiment of the present invention;

[0057] Fig.13 It is a structural schematic diagram of the connection between the second protection frame and the mounting plate in one embodiment of the present invention;

[0058] Fig.14 It is a schematic structural diagram of the connection between the cleaning unit and the protective frame in one embodiment of the present invention.

[0059] In the figure: 1. Power well body; 11. Wellhead; 2. Sliding frame; 21. Fixed plate; 211. Limiting groove; 212. Wire release groove; 22. Fixed frame; 23. Guide rod; 3. Hoisting unit; 31. Motor; 32. Rotating shaft; 33. Take-up roller; 34. Take-up frame; 35. Wire guide plate; 36. Hoisting rope; 37. Lifting ring; 4. Lifting platform; 41. Protective frame; 411. Guide block; 42. Mounting plate; 421. Guide groove; 422. Wire fixing plate; 43. Lifting frame; 44. Liquid Pressure cylinder; 45, stabilizing rod; 5, protection unit; 51, first protection frame; 511, sliding block; 512, fixing block; 513, slot; 52, protection net; 53, extrusion block; 54, mounting rod; 55, first elastic member; 56, first pull rope; 57, second protection frame; 571, plug plate; 58, first wire roller; 6, cleaning unit; 61, cleaning plate; 611, sliding block; 62, connecting frame; 63, sliding rod; 64, second elastic member; 65, second pull rope; 66, second wire roller. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Embodiment 1

[0062] See also Figure 1-14The present invention provides a technical solution: a safety protection structure for power maintenance work, comprising a sliding frame 2 arranged inside a power well body 1, a lifting platform 4 arranged on the sliding frame 2 for workers to stand, and a hoisting unit 3 arranged at the upper end of the sliding frame 2 for driving the lifting platform 4 to move up and down, and also comprising:

[0063] The protection unit 5 is arranged at the upper end of the sliding frame 2 and connected to the lifting platform 4, and is used to protect the wellhead 11 of the power well body 1;

[0064] A cleaning unit 6 is provided at the upper end of the sliding frame 2 and above the protection unit 5, and is used to clean the debris on the protection unit 5;

[0065] The lifting platform 4 comprises:

[0066] The mounting plate 42 is disposed on the sliding frame 2 and connected to the protection unit 5. When the hoisting unit 3 drives the mounting plate 42 to move downward, the mounting plate 42 drives the protection unit 5 to seal the wellhead 11;

[0067] A control device, arranged on the mounting plate 42;

[0068] The protection frame 41 is arranged on the inner side of the mounting plate 42 and is connected to the cleaning unit 6. When the protection unit 5 seals the wellhead 11, the hoisting unit 3 stops moving downward, the control device drives the protection frame 41 to move downward, and the protection frame 41 drives the cleaning unit 6 to move to the middle of the wellhead 11.

[0069] It should be noted that during operation, when it is necessary to inspect and repair power equipment such as cables at the lower end of the power well body 1, the sliding frame 2 is placed from the wellhead 11 to the inside of the power well body 1. The height of the sliding frame 2 can be set according to the depth of the power well body 1, so that the lower end of the sliding frame 2 is connected to the bottom of the power well body 1, the lifting platform 4 is fixed on the sliding frame 2, and then the lifting platform 4 is connected to the hoisting unit 3. The maintenance personnel stand on the protective frame 41, and then the hoisting unit 3 drives the mounting plate 42 to move downward, which is convenient for transporting the staff to the bottom of the power well body 1, and the mounting plate 42 drives the protective unit 5 to move horizontally at the upper end of the wellhead 11 during the downward movement. Move, so that the protection unit 5 can seal and protect the wellhead 11, block falling rocks and debris, prevent debris from falling into the interior of the power well body 1, and prevent debris from causing harm to the maintenance personnel working in the lower part of the power well body 1, thereby ensuring the safety of underground workers. When the protection unit 5 seals the wellhead 11, the lifting unit 3 stops working. At this time, the protection frame 41 is driven by the control device to move downward on the inner side of the mounting plate 42, and then the protection frame 41 moves downward at this time, which will drive the cleaning unit 6 to move, and when the protection frame 41 moves to the lower end, the cleaning unit 6 moves to the middle position of the wellhead 11, which can facilitate the subsequent cleaning of debris that falls on the protection unit 5.

[0070] In one embodiment, the mounting plate 42 is L-shaped and a lifting frame 43 is disposed on a side close to the sliding frame 2 . The lifting frame 43 is adjustably disposed on the sliding frame 2 , and the control device is connected to the protective frame 41 .

[0071] This design, see Figure 1-4 ,as well as Figure 6 The staff stands inside the protection frame 41, and then the hoisting unit 3 drives the lifting frame 43 to move downward. Then, when the lifting frame 43 moves down to the middle position of the power well body 1, the mounting plate 42 drives the protection unit 5 to move at the upper end of the sliding frame 2, thereby sealing the wellhead 11.

[0072] In one embodiment, the protection unit 5 includes a first protection frame 51 that is adjustably arranged on one side above the wellhead 11 and connected to the sliding frame body 2, a second protection frame 57 that is adjustably arranged on the other side above the wellhead 11 and connected to the sliding frame body 2, and a protection net 52 fixed inside the first protection frame 51 and the second protection frame 57. The first protection frame 51 and the second protection frame 57 are both connected to the mounting plate 42 via a first pull rope 56.

[0073] The sliding frame 2 is provided with a first guide roller 58 for guiding the first pull rope 56;

[0074] The outer sides of the first protection frame 51 and the second protection frame 57 are both fixed with a fixing block 512 for installing the first pull rope 56;

[0075] The sliding frame body 2 is provided with a support member for supporting the first protection frame 51 and the second protection frame 57;

[0076] A wire fixing plate 422 for mounting the first pull rope 56 is fixed on the mounting plate 42 .

[0077] This design, see Figure 1-5 ,as well as Figure 7 The first protective frame 51 and the second protective frame 57 are symmetrically arranged above the wellhead 11. When the mounting plate 42 dives to the middle position of the power well body 1, the first pull rope 56 pulls the fixing block 512 to move toward the middle of the wellhead 11, thereby driving the first protective frame 51 and the second protective frame 57 to move toward each other. The first protective frame 51 and the second protective frame 57 are connected, and then the top of the wellhead 11 is sealed. The protective net 52 is a mesh structure to avoid blocking light.

[0078] In one embodiment, the support member includes an extrusion block 53 fixed to the first protection frame 51 and the second protection frame 57 and a mounting rod 54 fixed to the sliding frame body 2 and symmetrically arranged with respect to the first protection frame 51 and the second protection frame 57;

[0079] The extrusion block 53 is sleeved on the mounting rod 54;

[0080] The mounting rod 54 is located between the sliding frame 2 and the extrusion block 53 and is sleeved with a first elastic member 55 . The first elastic member 55 is made of a damped spring or an elastic pad.

[0081] This design, see Figure 5 ,as well as Figure 7 When the first protective frame 51 and the second protective frame 57 move toward each other, the squeezing block 53 moves on the mounting rod 54 and squeezes the first elastic member 55 on the mounting rod 54. When the lifting frame 43 moves upward, the first pull rope 56 gradually moves upward, and then the first elastic member 55 can drive the squeezing block 53 to move to the side away from the wellhead 11, and then can drive the first protective frame 51 and the second protective frame 57 to perform a reset movement to open the upper end of the wellhead 11.

[0082] In one embodiment, a plug plate 571 is fixed to one side of the second protective frame 57 close to the first protective frame 51 , and a slot 513 for inserting the plug plate 571 is provided at a position of the first protective frame 51 corresponding to the plug plate 571 .

[0083] This design, see Figure 7 , Fig.10 as well as Fig.13When the first protective frame 51 and the second protective frame 57 are in contact, the plug plate 571 is inserted into the slot 513, which can improve the stability of the connection between the first protective frame 51 and the second protective frame 57 and prevent debris from falling into the upper end of the protective net 52, causing the first protective frame 51 and the second protective frame 57 to tilt under the influence of gravity, causing the debris on the protective net 52 to slide into the power well body 1.

[0084] In one embodiment, the sliding frame body 2 includes a fixing plate 21, a fixing frame 22 fixed to the lower end of the fixing plate 21 and arranged in a square frame, and a guide rod 23 fixed to the lower end of the fixing plate 21 and located between the two fixing frames 22;

[0085] The lifting frame 43 is slidably sleeved on the guide rod 23;

[0086] The fixing plate 21 is fixed to the upper end of the power well body 1 by bolts.

[0087] This design, see Figure 8 ,as well as Fig. 9 The lifting frame 43 is slidably sleeved on the guide rod 23. When the hoisting unit 3 drives the lifting frame 43 to move downward, the lifting frame 43 slides up and down on the guide rod 23, and then the lifting frame 43 drives the protective frame 41 to move downward, and then transports the staff to the bottom of the power well body 1.

[0088] In one embodiment, a slider 511 is fixed to the lower end of each of the first protection frame 51 and the second protection frame 57;

[0089] The fixed plate 21 is provided with a limiting groove 211 at a position corresponding to the slider 511 for the slider 511 to move.

[0090] The upper end of the fixing plate 21 is provided with a wire releasing groove 212 for the first pull rope 56 to move.

[0091] This design, see Figure 3 ,as well as Figure 5 During the movement of the first protective frame 51 and the second protective frame 57, the slider 511 slides inside the limiting groove 211, which can support the first protective frame 51 and the second protective frame 57, and can further improve the stability of the movement of the first protective frame 51 and the second protective frame 57 on the upper end of the fixed plate 21.

[0092] In one embodiment, the hoisting unit 3 includes a motor 31 fixed to the upper end of the fixed plate 21, a rotating shaft 32 arranged at the power output end of the motor 31, a wire take-up roller 33 fixed on the rotating shaft 32, a wire take-up frame 34 arranged at the upper end of the fixed plate 21 and sleeved on the wire take-up roller 33, and a hoisting rope 36 arranged on the wire take-up roller 33 for driving the lifting frame 43 to move up and down;

[0093] A lifting ring 37 is fixed to the upper end of the lifting frame 43, and a lifting rope 36 is sleeved on the lifting ring 37;

[0094] The take-up frame 34 is provided with a guide plate 35 for guiding the hoisting rope 36;

[0095] A support seat for supporting the rotating shaft 32 is provided at the upper end of the fixing plate 21 .

[0096] This design, see Figure 7 ,as well as Fig. 9 The motor 31 drives the rotating shaft 32 to rotate, so that the take-up roller 33 pays off the lifting rope 36, and the lifting frame 43 moves downward continuously under the action of gravity. Then, the wire plate 35 on the take-up frame 34 can guide the lifting rope 36, which can improve the lifting rope 36 to drive the lifting frame 43 to move vertically upward, thereby improving the stability of the movement of the lifting frame 43.

[0097] Embodiment 2

[0098] In one embodiment, the control device includes a hydraulic cylinder 44 fixed to the mounting plate 42 and a stabilizing rod 45 fixed to the mounting plate 42 and symmetrically arranged about the hydraulic cylinder 44;

[0099] The top end of the hydraulic cylinder 44 is fixedly connected to the protection frame 41;

[0100] The protection frame 41 is passed through the stabilizing rod 45;

[0101] A guide block 411 is provided on one side of the protection frame 41 close to the mounting plate 42;

[0102] A guiding groove 421 for the guiding block 411 to move is formed at a position of the mounting plate 42 corresponding to the guiding block 411 .

[0103] This design, see Figure 6 ,as well as Fig.14 When the first pull rope 56 moves down to the lowest point, the mounting plate 42 moves down to the lowest point. At this time, the hydraulic cylinder 44 is started to drive the protection frame 41 to move down. At this time, the guide blocks 411 on both sides of the protection frame 41 move inside the guide groove 421, and when the protection frame 41 moves down, the stabilizing rod 45 passes through the protection frame 41, so that the protection frame 41 moves down, which can make the protection frame 41 closer to the bottom of the power well body 1, making it convenient for the staff to move up and down from the protection frame 41 to the bottom of the power well body 1.

[0104] In one embodiment, the cleaning unit 6 includes a connecting frame 62 fixed to the upper end of the sliding frame body 2 and symmetrically arranged with respect to the first protective frame 51 and the second protective frame 57, a sliding rod 63 fixed between the two connecting frames 62, a sliding block 611 sleeved on the sliding rod 63, a cleaning plate 61 fixed between the two sliding blocks 611 and arranged in an arc shape above the protective net 52, and a second elastic member 64 sleeved on the sliding rod 63 for supporting the sliding block 611, wherein the second elastic member 64 is made of a damped spring or an elastic pad;

[0105] The cleaning plate 61 is connected to the protection frame 41 via a second pull rope 65;

[0106] A second guide roller 66 for guiding the second pull rope 65 is fixedly provided on the sliding frame 2 at a position in the middle of the wellhead 11;

[0107] The length of the second pull cord 65 is longer than the length of the first pull cord 56 .

[0108] This design, see Figure 7 ,as well as Fig.14When the hydraulic cylinder 44 drives the protective frame 41 to move downward, the second pull rope 65 pulls the cleaning plate 61 to move toward the middle position of the wellhead 11, and then the second pull rope 65 is placed in the gap between the first protective frame 51, the second protective frame 57 and the fixed frame 22, so that the cleaning plate 61 can be easily pulled to move above the protective net 52. When protecting the wellhead 11, the first protective frame 51 and the second protective frame 57 are driven by the first pull rope 56 to seal the wellhead 11, and then the second pull rope 65 pulls the cleaning plate 61 to move above the protective net 52, and the cleaning plate 61 seals the connection point of the first protective frame 51 and the second protective frame 57. The cleaning plate 61 is arranged in an arc shape, so that the debris falling into the middle position of the wellhead 11 can slide onto the protective net 52, which is convenient for subsequent cleaning work. When the two cleaning plates 61 move toward each other, the sliding block 611 squeezes the second elastic member 64. When the staff has finished the maintenance work, the hydraulic cylinder 44 first drives the protection frame 41 to move up, and then the second elastic member 64 drives the cleaning plate 61 to move to the side away from the wellhead 11, pushing the debris fallen on the protection net 52 to the outside, and the debris can be pushed out of the wellhead 11. The debris on the protection net 52 can be cleaned to prevent the first protection frame 51 and the second protection frame 57 from opening during the process of the protection frame 41 driving the staff to move up, and the debris on the first protection frame 51 and the second protection frame 57 falls from the protection net 52 and injures the staff on the protection frame 41. When the cleaning plate 61 is reset, the hoisting unit 3 drives the lifting frame 43 to move up, and the fixing plate 422 on the mounting plate 42 drives the first pull rope 56 to move up. At this time, the first elastic member 55 drives the first protection frame 51 and the second protection frame 57 to do the reset movement, and the wellhead 11 is opened, which is convenient for the staff to move out from the inside of the power well body 1.

[0109] In addition, if there are descriptions involving "first", "second", etc. in the embodiments, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying the importance of the relative description or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

Claims

1. A safety protection structure for power maintenance work, comprising a sliding frame (2) arranged inside a power well body (1), a lifting platform (4) arranged on the sliding frame (2) for workers to stand on, and a hoisting unit (3) arranged at the upper end of the sliding frame (2) for driving the lifting platform (4) to move up and down, characterized in that: Also includes: A protection unit (5), arranged at the upper end of the sliding frame (2) and connected to the lifting platform (4), for protecting the wellhead (11) of the power well body (1); A cleaning unit (6), arranged at the upper end of the sliding frame (2) and located above the protective unit (5), and used for cleaning debris on the protective unit (5); The lifting platform (4) comprises: A mounting plate (42) is arranged on the sliding frame (2) and connected to the protection unit (5); when the hoisting unit (3) drives the mounting plate (42) to move downward, the mounting plate (42) drives the protection unit (5) to seal the wellhead (11); A control device, arranged on the mounting plate (42); A protective frame (41) is arranged on the inner side of the mounting plate (42) and is connected to the cleaning unit (6). When the protective unit (5) seals the wellhead (11), the hoisting unit (3) stops moving downward, the control device drives the protective frame (41) to move downward, and the protective frame (41) drives the cleaning unit (6) to move to the middle of the wellhead (11).

2. A safety protection structure for electric power maintenance work according to claim 1, characterized in that: The mounting plate (42) is L-shaped and a lifting frame (43) is arranged on one side close to the sliding frame (2). The lifting frame (43) is adjustably arranged on the sliding frame (2). The control device is connected to the protective frame (41).

3. A safety protection structure for electric power maintenance work according to claim 1, characterized in that: The control device comprises a hydraulic cylinder (44) fixed on the mounting plate (42) and a stabilizing rod (45) fixed on the mounting plate (42) and symmetrically arranged with respect to the hydraulic cylinder (44); The top end of the hydraulic cylinder (44) is fixedly connected to the protection frame (41); The protection frame (41) is passed through the stabilizing rod (45); A guide block (411) is provided on one side of the protection frame (41) close to the mounting plate (42); A guiding groove (421) for the guiding block (411) to move is provided at a position of the mounting plate (42) corresponding to the guiding block (411).

4. A safety protection structure for electric power maintenance work according to claim 3, characterized in that: The protection unit (5) comprises a first protection frame (51) which is adjustably arranged on one side above the wellhead (11) and connected to the sliding frame body (2), a second protection frame (57) which is adjustably arranged on the other side above the wellhead (11) and connected to the sliding frame body (2), and a protection net (52) fixed inside the first protection frame (51) and the second protection frame (57), wherein the first protection frame (51) and the second protection frame (57) are both connected to the mounting plate (42) via a first pull rope (56); The sliding frame (2) is provided with a first guide roller (58) for guiding the first pull rope (56); A fixing block (512) for installing the first pull rope (56) is fixed on the outer side of each of the first protection frame (51) and the second protection frame (57); The sliding frame body (2) is provided with a support member for supporting the first protective frame (51) and the second protective frame (57); A wire fixing plate (422) for installing the first pull rope (56) is fixed on the installation plate (42).

5. A safety protection structure for electric power maintenance work according to claim 4, characterized in that: The support member comprises an extrusion block (53) fixed on the first protective frame (51) and the second protective frame (57), and a mounting rod (54) fixed on the sliding frame body (2) and symmetrically arranged with respect to the first protective frame (51) and the second protective frame (57); The extrusion block (53) is sleeved on the mounting rod (54); The mounting rod (54) is located between the sliding frame (2) and the extrusion block (53) and is sleeved with a first elastic member (55).

6. A safety protection structure for electric power maintenance work according to claim 4, characterized in that: A plug board (571) is fixed to one side of the second protective frame (57) close to the first protective frame (51), and a slot (513) for plugging the plug board (571) is provided at a position of the first protective frame (51) corresponding to the plug board (571).

7. A safety protection structure for electric power maintenance work according to claim 5, characterized in that: The cleaning unit (6) comprises a connecting frame (62) fixed to the upper end of the sliding frame body (2) and symmetrically arranged with respect to the first protective frame (51) and the second protective frame (57), a sliding rod (63) fixed between the two connecting frames (62), a sliding block (611) sleeved on the sliding rod (63), a cleaning plate (61) fixed between the two sliding blocks (611) and arranged in an arc shape above the protective net (52), and a second elastic member (64) sleeved on the sliding rod (63) for supporting the sliding block (611); The cleaning plate (61) is connected to the protection frame (41) via a second pull rope (65); The sliding frame (2) is fixedly provided with a second guide roller (66) for guiding the second pull rope (65) at a position located in the middle of the wellhead (11); The length of the second draw cord (65) is longer than the length of the first draw cord (56).

8. A safety protection structure for electric power maintenance work according to claim 7, characterized in that: The sliding frame body (2) comprises a fixing plate (21), a fixing frame (22) arranged in a square frame shape and fixed to the lower end of the fixing plate (21), and a guide rod (23) fixed to the lower end of the fixing plate (21) and located between the two fixing frames (22); The lifting frame (43) is slidably sleeved on the guide rod (23); The fixing plate (21) is fixed to the upper end of the power well body (1) by means of bolts.

9. A safety protection structure for electric power maintenance work according to claim 8, characterized in that: A sliding block (511) is fixed to the lower ends of the first protection frame (51) and the second protection frame (57); The fixed plate (21) is provided with a limiting groove (211) at a position corresponding to the sliding block (511) for the sliding block (511) to move; The upper end of the fixing plate (21) is provided with a wire-releasing groove (212) for the first pull rope (56) to move.

10. A safety protection structure for electric power maintenance work according to claim 8, characterized in that: The hoisting unit (3) comprises a motor (31) fixed to the upper end of the fixing plate (21), a rotating shaft (32) arranged at the power output end of the motor (31), a wire take-up roller (33) fixed to the rotating shaft (32), a wire take-up frame (34) arranged at the upper end of the fixing plate (21) and sleeved on the wire take-up roller (33), and a hoisting rope (36) arranged on the wire take-up roller (33) and used for driving the lifting frame (43) to move up and down; A lifting ring (37) is fixed to the upper end of the lifting frame (43), and the lifting rope (36) is sleeved on the lifting ring (37); The wire take-up frame (34) is provided with a wire guide plate (35) for guiding the hoisting rope (36); A support seat for supporting the rotating shaft (32) is provided at the upper end of the fixing plate (21).

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