Multifunctional protective fence for vertical orifice of hydropower station

Abstract

The utility model discloses a hydropower station vertical orifice multifunctional protective fence which comprises an object lifting hole lifting frame and a cover plate lifting support, the object lifting hole lifting frame is of a hollow structure with two open lower ends, and one side of the object lifting hole lifting frame is provided with an openable and closable access door; a telescopic lifting beam is arranged in the middle of the top of the object lifting hole lifting frame, the two sides of the telescopic lifting beam are in detachable limiting fit with the object lifting hole lifting frame through ball anti-disengaging fixing pins, and an electric hoist is arranged at the bottom of the telescopic lifting beam. A notch is formed in the bottom of the side, away from the man entering door, of the object lifting hole lifting frame, a cover plate lifting support is arranged in the notch, the cover plate lifting support is in push-pull fit with the object lifting hole lifting frame at the notch in the horizontal direction, a lifting assembly is arranged at the top of the cover plate lifting support, and the lifting assembly and the cover plate are in detachable lifting fit. And a plurality of casters capable of braking are arranged at the bottoms of the object lifting hole lifting frame and the cover plate lifting bracket. And the cover plate is convenient to disassemble, so that the safety of personnel is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of dam maintenance, in particular to a multifunctional protective fence for a vertical opening of a hydropower station. Background Art

[0002] Deep hole arc gates are an important part of the dam project. In order to ensure the normal operation of the flood discharge equipment, the staff conducts routine inspections and equipment evaluations on important flood discharge components such as deep hole arc gates and flow channels every year. According to the equipment evaluation results, they carry out maintenance projects such as replacement of arc gate water seals, deep hole door lintel water-stop modification and panel anti-corrosion treatment, and flow channel repair.

[0003] Due to the special location of the equipment, it is generally necessary to open the cover of the hole first during inspection and maintenance work. After the cover is opened, a fence needs to be set up to prevent other inspectors from accidentally stepping on it and ensure the safety of personnel. At the same time, the fence also provides a hanging point to protect the safety of personnel and transfer a small amount of materials.

[0004] The existing technical solution is mainly designed as a square stainless steel frame fence based on the shape of the equipment entrance. A circular hanging point is welded on the top of the frame. The staff first connects the fall arrester to the hanging point, then puts on the safety belt and connects it to the fall arrester, climbs vertically through the fence inside the entrance to the working arm of the curved door, and inspects the curved door and the flow channel. The existing solution has the following disadvantages:

[0005] 1. The fence cannot be moved flexibly. When multiple holes are operated, the transfer fence needs to be carried manually or by a manual hydraulic forklift;

[0006] 2. Opening the cover requires manpower and material resources. The fence only serves as a protection and has no function of opening the cover. In addition, there is a risk of workers falling into the hole during the opening process.

[0007] 3. The lifting points of the fence cannot transport heavy materials, and transporting materials is time-consuming and labor-intensive. Utility Model Content

[0008] The utility model provides a multifunctional protective fence for a vertical opening of a hydropower station, aiming to solve the problems of inconvenient movement of the fence, poor safety and time-consuming and labor-intensive material transportation during the above-mentioned existing maintenance process.

[0009] In order to solve the above technical problems, the technical solution adopted by the utility model is: a multifunctional protective fence for a vertical opening of a hydropower station, comprising a lifting frame for a hanging hole and a cover plate lifting bracket, wherein the hanging hole lifting frame is a hollow structure with openings at both ends, and a closable access door is provided on one side of the hanging hole lifting frame;

[0010] A telescopic beam is provided at the middle position of the top of the lifting frame of the lifting hole, and the two sides of the telescopic beam are respectively slidably matched with the lifting frame of the lifting hole in the vertical direction, and the two sides of the telescopic beam form a detachable limit fit with the lifting frame of the lifting hole through a ball anti-dropping fixing pin, and an electric hoist is provided at the middle position of the bottom of the telescopic beam;

[0011] A notch is provided at the bottom of the lifting frame of the object hanging hole away from the entrance door, and a cover plate lifting bracket is provided in the notch, and the cover plate lifting bracket forms a push-pull fit with the lifting frame of the object hanging hole at the notch in the horizontal direction, and a lifting assembly is provided on the top of the cover plate lifting bracket, and the lifting assembly forms a detachable lifting fit with the cover plate;

[0012] The bottoms of the object-hanging hole lifting frame and the cover plate lifting bracket are both provided with a plurality of brakeable casters.

[0013] Preferably, the object hanging hole lifting frame is a cubic frame which is open at the top and bottom and hollow inside.

[0014] As a more preferred embodiment, an access hole is provided on one side of the lifting frame of the hanging hole, and an access door is openably arranged in the access hole, and the side of the access door is hingedly connected to the corresponding side of the access hole through a hinge.

[0015] Furthermore, vertically arranged hollow rods are provided at the middle positions on the opposite sides of the lifting frame of the hanging hole, and vertically arranged sliding rods are provided at both ends of the telescopic lifting beam. The hollow rods correspond to the sliding rods one by one, and the sliding rods are sleeved in the corresponding hollow rods and slidingly matched with the corresponding hollow rods. A number of positioning holes are provided on the sliding rods and the corresponding hollow rods. When the positioning holes on the sliding rods coincide with the positioning holes on the hollow rods, positioning pin matching is formed through the ball anti-dropping fixing pins.

[0016] Furthermore, the cover plate lifting bracket is an L-shaped bracket, and the right-angle side bracket on one side of the cover plate lifting bracket is arranged horizontally, and the horizontally arranged right-angle side bracket and the inner side of the lifting frame of the lifting hole at the top of the notch form a sliding fit in the horizontal direction through a sliding component, a lifting component is provided in the middle position of the horizontally arranged right-angle side bracket, and the right-angle side bracket on the other side is arranged vertically downward, and casters are provided at the bottom end of the vertically arranged right-angle side bracket.

[0017] Specifically, the sliding assembly includes guide rails and guide wheels. Guide wheels are provided on the opposite sides of the bottom end of the horizontally arranged right-angle side bracket, and horizontally arranged guide rails are provided on the opposite sides of the lifting frame of the hanging hole at the top of the notch. The guide wheels correspond to the guide rails one by one, and the guide wheels form a sliding fit with the corresponding guide rails.

[0018] More specifically, the lifting assembly includes a manual winch and a fixed pulley arranged on a horizontally arranged right-angle side bracket. The output end of the manual winch forms a fixed pulley fit through the fixed pulley. A permanent magnet is provided on the output end of the manual winch, and the permanent magnet forms a detachable magnetic fit with the cover plate.

[0019] Optimally, the object-hanging hole lifting frame and the cover plate lifting bracket both form a brakeable sliding fit with the cement foundation surface through casters.

[0020] Beneficial effects of the utility model:

[0021] 1. The device is easy to move and fix through brakeable casters, saving manpower and material resources during the movement process, while ensuring stability during maintenance;

[0022] 2. The cover plate can be easily lifted and moved to the exposed hole through the cover plate lifting bracket and the lifting assembly installed on the bracket. The operation can be completed manually at a place far away from the hole, ensuring the safety of the cover plate removal workers. At the same time, the lifting assembly can reduce the manpower and material resources in the removal process and improve the overall maintenance efficiency;

[0023] 3. Providing lifting points through electric hoists not only facilitates the lifting and lowering of staff, but also facilitates the transportation of materials and improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0025] Figure 2 It is an enlarged schematic diagram of point A of the utility model;

[0026] Figure 3 It is a main plan view schematic diagram of the utility model;

[0027] Figure 4 It is a side plan view schematic diagram of the utility model;

[0028] In the figure: 1. Lifting frame for lifting holes; 2. Telescopic lifting beam; 3. Entrance door; 4. Cover lifting bracket; 5. Casters; 6. Sliding assembly; 7. Fixed pulley; 8. Hinge; 9. Manual winch; 10. Electric hoist; 11. Ball anti-drop fixing pin; 12. Permanent magnet. DETAILED DESCRIPTION

[0029] As follows, embodiments are further described with reference to the accompanying drawings.

[0030] like Figure 1~Figure 4As shown, as a preferred embodiment 1, a multifunctional protective fence for a vertical opening of a hydropower station includes a lifting frame 1 for a hanging hole and a cover plate lifting bracket 4, wherein the lifting frame 1 for a hanging hole is a hollow structure with openings at both ends, and a closable access door 3 is provided on one side of the lifting frame 1 for a hanging hole;

[0031] A telescopic beam 2 is provided at the middle position of the top of the lifting frame 1 of the lifting hole, and the two sides of the telescopic beam 2 are respectively slidably matched with the lifting frame 1 of the lifting hole in the vertical direction, and the two sides of the telescopic beam 2 form a detachable limit fit with the lifting frame 1 of the lifting hole through the ball anti-dropping fixing pin 11, and an electric hoist 10 is provided at the middle position of the bottom of the telescopic beam 2;

[0032] A notch is provided at the bottom of the lifting frame 1 of the object hanging hole away from the entrance door 3, and a cover plate lifting bracket 4 is provided in the notch, and the cover plate lifting bracket 4 forms a push-pull fit with the lifting frame 1 of the object hanging hole at the notch in the horizontal direction, and a lifting assembly is provided on the top of the cover plate lifting bracket 4, and the lifting assembly forms a detachable lifting fit with the cover plate;

[0033] The bottoms of the object-hanging hole lifting frame 1 and the cover plate lifting bracket 4 are both provided with a plurality of brakeable casters 5 .

[0034] Embodiment 1 provides a multifunctional protective fence for a vertical hole of a hydropower station. The lifting frame 1 of the hanging hole and the cover plate lifting bracket 4 can be moved together to the top of the cover plate through the casters 5, and braked at a suitable position to facilitate movement and maintain stability. The hanging hole lifting frame 1 mainly plays the role of a safety protection fence to prevent operating personnel and external mobile personnel from falling into the opened hole, thereby ensuring the safety of the operating personnel.

[0035] After braking, the cover plate can be lifted by assembling the lifting assembly on the cover plate lifting bracket 4 with the cover plate, and the lifting of the cover plate is completed. Pulling out the cover plate lifting bracket 4 can make the cover plate and the cover plate lifting bracket 4 move and pull out synchronously, and the removal and transfer of the cover plate are completed, which saves time and effort in the removal process and ensures the safety of the personnel opening the cover plate.

[0036] The height of the telescopic hanging beam 2 is adjusted by the ball anti-dropping fixing pin 11, and it is positioned at a suitable height to adapt to corridors of different heights. The fall arrester is connected to the electric hoist 10, and the safety rope is connected to the fall arrester. The electric hoist 10 can enable people to freely go up and down from the hole, provide a hanging point, and facilitate the inspection work. At the same time, the electric hoist 10 can also be used for the transportation of materials.

[0037] As a preferred embodiment 2, the object-hanging hole lifting frame 1 is a cubic frame with upper and lower openings and a hollow interior, which ensures stable fixation and facilitates the horizontal sliding of the cover plate lifting bracket 4 and the arrangement of the lifting points of the electric hoist 10.

[0038] As a preferred embodiment 3, a manhole is provided on one side of the object-hanging hole lifting frame 1, and a manhole door 3 is provided in the manhole in an openable and closable manner, and the side of the manhole door 3 is hingedly matched with the corresponding side of the manhole through a hinge 8. It is convenient for the staff to enter the hole, and the safety of the staff is ensured when not entering to prevent falling in.

[0039] As a more preferred embodiment 4, the entrance door 3 is an outward-opening entrance door to prevent conflict with the internal structure, facilitate opening, and prevent accidental opening and falling into the hole.

[0040] As a preferred embodiment 5, vertically arranged hollow rods are provided at the middle positions on the opposite sides of the lifting frame 1 of the hanging hole, and vertically arranged sliding rods are provided at both ends of the telescopic lifting beam 2. The hollow rods correspond to the sliding rods one by one, and the sliding rods are sleeved in the corresponding hollow rods and slidably cooperate with the corresponding hollow rods. A number of positioning holes are provided on the sliding rods and the corresponding hollow rods. When the positioning holes on the sliding rods coincide with the positioning holes on the hollow rods, positioning pin cooperation is formed through the ball anti-dropping fixing pins 11.

[0041] Example 5 provides a specific structure for the telescopic beam 2 to achieve height change and positioning. The height of the telescopic beam 2 can be changed by adjusting the relative position of the sliding rod and the corresponding hollow rod. When adjusted to a suitable height, the positioning hole on the sliding rod coincides with the positioning hole on the hollow rod. At this time, the ball anti-slip fixing pin 11 can be used to form a positioning pin fit to determine the position at this time and keep it fixed. The ball anti-slip fixing pin 11 is used to ensure the firmness of the fixation to prevent the telescopic beam 2 from falling or the positioning from loosening during lifting, causing an accident.

[0042] As a preferred embodiment 6, the cover lifting bracket 4 is an L-shaped bracket, and the right-angled bracket on one side of the cover lifting bracket 4 is arranged horizontally, and the horizontally arranged right-angled bracket and the inner side of the lifting frame 1 of the lifting hole at the top of the notch form a sliding fit in the horizontal direction through a sliding component 6, a lifting component is provided in the middle position of the horizontally arranged right-angled bracket, the right-angled bracket on the other side is arranged vertically downward, and a caster 5 is provided at the bottom end of the vertically arranged right-angled bracket.

[0043] Example 6 provides a specific style of the cover lifting bracket 4 and its installation structure. The use of an L-shaped bracket is convenient for displacement in the horizontal direction on the one hand, so that the cover can be easily slid out together with the cover lifting bracket 4 after lifting. On the other hand, it is convenient to arrange the lifting assembly on the top of the cover lifting bracket 4, so that the cover lifting bracket 4 as the force-bearing surface of the lifting assembly is more stable, which is convenient for installing the lifting assembly.

[0044] As a preferred embodiment 7, the sliding assembly 6 includes guide rails and guide wheels. Guide wheels are provided on both opposite ends of the bottom of the horizontally arranged right-angled side bracket, and horizontally arranged guide rails are provided on both opposite sides of the lifting frame 1 of the hanging hole at the top of the notch. The guide wheels correspond to the guide rails one by one, and the guide wheels form a sliding fit with the corresponding guide rails.

[0045] Example 7 provides the specific structure and selection of the sliding assembly 6, and sliding is achieved through the sliding cooperation between the guide wheel and the corresponding guide rail. At the same time, the guide wheel also serves as the force fulcrum of the cover lifting bracket 4, and cooperates with the corresponding slide rail to ensure stability during lifting.

[0046] As a preferred embodiment 8, the lifting assembly includes a manual winch 9 and a fixed pulley 7 arranged on a horizontally arranged right-angle side bracket. The output end of the manual winch 9 forms a fixed pulley fit through the fixed pulley 7. A permanent magnet 12 is provided on the output end of the manual winch 9, and the permanent magnet 12 forms a detachable magnetic fit with the cover plate.

[0047] Embodiment 8 is selected as a lifting component. The cover plate is fixed to the output end of the manual winch 9 by the permanent magnet 12. The manual winch 9 is used to provide tension to wind the winch rope, so that the cover plate is raised to complete the removal of the cover plate. The manual winch 9 is braked to complete the removal and fixation. The staff can operate away from the hole to prevent the cover plate from falling into the hole when removing it, thereby ensuring installation.

[0048] As a more preferred embodiment 9, the manual winch 9 can be an electric hoisting device to further save the manpower required for disassembling the cover.

[0049] As a more preferred embodiment 10, the end of the output end rope of the manual winch 9 is provided with four installation ropes, wherein the ends of two opposite ones are provided with permanent magnets 12, and the other two opposite ones are provided with hooks. During installation, the hooks are respectively hooked with the corresponding cover plate handles, and the permanent magnets 12 are all fixed on the cover plate. The output end rope of the manual winch 9 is coaxial with the middle axis of the cover plate, and the hooks are symmetrical about the output end rope of the manual winch 9, and the permanent magnets 12 are symmetrical about the output end rope of the manual winch 9, which further enhances the stability of the fixation when the cover plate is disassembled and ensures the stability of the force when the cover plate is lifted.

[0050] As a more preferred embodiment 11, the object-hanging hole lifting frame 1 and the cover plate lifting bracket 4 are both in a brakeable sliding fit with the cement foundation surface through casters 5, which facilitates movement and braking and reduces the manpower consumed by the mobile device.

[0051] As a more preferred embodiment 12, embodiments 1 to 11 are used to provide a method for repairing a multifunctional protective fence at a vertical opening of a hydropower station, comprising the following steps:

[0052] S1: The lifting frame 1 of the hanging hole and the cover plate lifting bracket 4 can be moved together to the top of the cover plate by the casters 5, and braked at a suitable position;

[0053] S2: Adjust the height of the telescopic hanging beam 2 according to the height of the corridor, and fix it by the ball anti-dropping fixing pin 11;

[0054] S3, install the electric hoist 10 on the telescopic hanging beam 2, and install the fall arrester;

[0055] S4, assemble and fix the permanent magnet 12 at the output end of the lifting assembly and the cover plate, and retract the rope through the manual winch 9, lift the cover plate through the fixed pulley 7, and finally brake the manual winch 9 to fix the cover plate in a suitable position;

[0056] S5. Pull out the cover plate lifting bracket 4 through the sliding assembly 6 to expose the hole, connect the safety rope of the descending worker to the fall arrester, enter from the hole, and perform the descending maintenance work;

[0057] S6. After the inspection is completed, when the worker steps on the ground stably, disconnect the anti-fall device from the safety rope, push in the cover plate lifting bracket 4, reverse the manual winch 9 to make the cover plate fall, until the cover plate re-seals the hole, and then contact the permanent magnet 12 with the cover plate to complete the re-sealing of the cover plate;

[0058] S7, move the lifting frame 1 of the hanging hole and the cover lifting bracket 4 together to the cover at the next maintenance location through the casters 5, and repeat S1 to S7 until all maintenance work is completed.

[0059] The working principle of this utility model:

[0060] The utility model provides a multifunctional protective fence for a vertical hole of a hydropower station. The lifting frame 1 of the hanging hole and the cover plate lifting bracket 4 can be moved together to the top of the cover plate through casters 5, and braked at a suitable position to facilitate movement and maintain stability. The lifting frame 1 of the hanging hole mainly plays the role of a safety protective fence to prevent operating personnel and external mobile personnel from falling into the opened hole, thereby ensuring the safety of the operating personnel.

[0061] After braking, the cover plate can be lifted by assembling the lifting assembly on the cover plate lifting bracket 4 with the cover plate, and the lifting of the cover plate is completed. Pulling out the cover plate lifting bracket 4 can make the cover plate and the cover plate lifting bracket 4 move and pull out synchronously, and the removal and transfer of the cover plate are completed, which saves time and effort in the removal process and ensures the safety of the personnel opening the cover plate.

[0062] The height of the telescopic hanging beam 2 is adjusted by the ball anti-dropping fixing pin 11, and it is positioned at a suitable height to adapt to corridors of different heights. The fall arrester is connected to the electric hoist 10, and the safety rope is connected to the fall arrester. The electric hoist 10 can enable people to freely go up and down from the hole, provide a hanging point, and facilitate the inspection work. At the same time, the electric hoist 10 can also be used for the transportation of materials.

Claims

1. A multifunctional protective fence for vertical openings of a hydropower station, characterized in that: It comprises a lifting frame (1) for hanging objects and a cover plate lifting bracket (4), wherein the lifting frame (1) for hanging objects is a hollow structure with openings at both ends, and a closable entrance door (3) is provided on one side of the lifting frame (1); A telescopic beam (2) is provided at the middle position of the top of the object-hanging hole lifting frame (1), and the two sides of the telescopic beam (2) are respectively slidably matched with the object-hanging hole lifting frame (1) in the vertical direction, and the two sides of the telescopic beam (2) form a detachable limit fit with the object-hanging hole lifting frame (1) through a ball anti-dropping fixing pin (11), and an electric hoist (10) is provided at the middle position of the bottom of the telescopic beam (2); A notch is provided at the bottom of the object-hanging hole lifting frame (1) at the side away from the entrance door (3), and a cover plate lifting bracket (4) is provided in the notch, the cover plate lifting bracket (4) forms a push-pull fit with the object-hanging hole lifting frame (1) at the notch in the horizontal direction, a lifting assembly is provided at the top of the cover plate lifting bracket (4), and the lifting assembly forms a detachable lifting fit with the cover plate; The bottoms of the object lifting hole lifting frame (1) and the cover plate lifting bracket (4) are both provided with a plurality of brakeable casters (5).

2. A multifunctional protective fence for vertical openings of a hydropower station according to claim 1, characterized in that: The object hanging hole lifting frame (1) is a cubic frame which is open at the top and bottom and hollow inside.

3. A multifunctional protective fence for vertical openings of a hydropower station according to claim 2, characterized in that: An access hole is provided on one side of the object lifting hole lifting frame (1), and an access door (3) is arranged in the access hole in an openable and closable manner, and the side of the access door (3) is hingedly matched with the corresponding side of the access hole through a hinge (8).

4. A multifunctional protective fence for vertical openings of a hydropower station according to claim 3, characterized in that: A vertically arranged hollow rod is provided at the middle position of the opposite sides of the lifting frame (1) of the lifting hole, and a vertically arranged sliding rod is provided at both ends of the telescopic lifting beam (2). The hollow rod corresponds to the sliding rod one by one, and the sliding rod is sleeved in the corresponding hollow rod and slidably cooperates with the corresponding hollow rod. A plurality of positioning holes are provided on the sliding rod and the corresponding hollow rod. When the positioning holes on the sliding rod coincide with the positioning holes on the hollow rod, a positioning pin cooperation is formed through a ball anti-dropping fixing pin (11).

5. A multifunctional protective fence for vertical openings of a hydropower station according to claim 4, characterized in that: The cover plate lifting bracket (4) is an L-shaped bracket, one side right-angle bracket of the cover plate lifting bracket (4) is arranged horizontally, and the horizontally arranged right-angle bracket and the inner side of the lifting frame (1) of the lifting hole at the top of the notch form a sliding fit in the horizontal direction through a sliding component (6), a lifting component is provided in the middle position of the horizontally arranged right-angle bracket, the other side right-angle bracket is arranged vertically downward, and a caster (5) is provided at the bottom end of the vertically arranged right-angle bracket.

6. A multifunctional protective fence for vertical openings of a hydropower station according to claim 5, characterized in that: The sliding assembly (6) comprises guide rails and guide wheels. The bottom of the horizontally arranged right-angled bracket is provided with guide wheels on both opposite sides. The lifting frame (1) of the hanging hole at the top of the notch is provided with horizontally arranged guide rails on both opposite sides. The guide wheels correspond to the guide rails one by one, and the guide wheels form a sliding fit with the corresponding guide rails.

7. A multifunctional protective fence for vertical openings of a hydropower station according to claim 6, characterized in that: The lifting assembly comprises a manual winch (9) and a fixed pulley (7) arranged on a horizontally arranged right-angle side bracket, the output end of the manual winch (9) forms a fixed pulley fit through the fixed pulley (7), and a permanent magnet (12) is provided on the output end of the manual winch (9), and the permanent magnet (12) forms a detachable magnetic attraction fit with the cover plate.

8. A multifunctional protective fence for vertical openings of a hydropower station according to any one of claims 1 to 7, characterized in that: The object lifting hole lifting frame (1) and the cover plate lifting bracket (4) both form a brakeable sliding fit with the cement foundation surface via casters (5).

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