A protection device for a shaft widening construction operation platform

Abstract

The application discloses a protection device of a shaft deepening construction operation platform, which comprises a base, recesses one are formed in four corners of the base, a supporting rod is longitudinally arranged on one side of each of the four recesses one, a top net is arranged at the other end of the supporting rod, a guard plate is arranged at the top end of the top net, a hook is fixedly connected to the top of the guard plate, four recesses two corresponding to the supporting rods are formed in the top net, a clamping assembly is clamped in the recesses one and the recesses two, the clamping assembly is fixedly connected to the ends of the corresponding supporting rods, a side net is arranged between adjacent two supporting rods, a fixing assembly for limiting the vertical direction of the side plate is arranged between the side net and the supporting rod, and a limiting assembly for limiting the horizontal direction of the side plate is slidably arranged on the supporting rods.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and hydropower technology, and in particular to a protective device for a vertical shaft excavation construction platform. Background Technology

[0002] In water conservancy and hydropower projects, vertical shaft excavation is often encountered in projects such as water diversion tunnels, outlet tunnels, surge tanks, and ventilation shafts. When vertical shafts are excavated using the reverse shaft drilling method, the pilot shaft is first constructed using a reverse shaft drilling rig, followed by manual drilling and blasting to widen the shaft from top to bottom. Currently, the widening process involves using a hoisting cage to transport personnel and equipment to the widening platform. Personnel then perform drilling operations inside the shaft, followed by blasting, manual cleaning of debris, and finally, the exposed shaft wall of the current excavation layer is anchored, wire mesh installed, and shotcrete applied according to the design. Only after these procedures are completed can the next layer of excavation begin. Throughout the entire construction process, workers are constantly operating in deep shafts. If debris falls from the upper part of the widened shaft section, it will cause significant harm to the workers. To protect the safety of workers inside the shaft, research is being conducted on modifying the hoisting cage used for transportation to prevent injury from falling debris, while also facilitating disassembly and transport. Summary of the Invention

[0003] The purpose of this invention is to provide a protective device for a vertical shaft excavation operation platform, solving the problems of injury to users caused by falling blocks and difficulties in disassembly and assembly.

[0004] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0005] A protective device for a vertical shaft excavation construction platform includes a base. Each of the four corners of the base has a groove (I). A support rod is longitudinally arranged on one side of each of the four grooves (I). A top net is provided at the other end of each support rod. A protective plate is provided at the top of the top net. A hook is fixedly connected to the top of the protective plate. Four grooves (II) corresponding to the support rods are provided on the top net. A locking assembly is installed inside each groove (I) and groove (II). The locking assembly is fixedly connected to both ends of the corresponding support rod. A side net is provided between two adjacent support rods. A fixing assembly for vertically limiting the side plate is provided between the side net and the support rod. Limiting assemblies for horizontally limiting the side plate are slidably installed on several of the support rods.

[0006] Preferably, the snap-fit ​​assembly includes a snap-fit ​​block, a slide rod, a rotating rod, a spring, a receiving plate, a moving block, and a fixed block. One end of the snap-fit ​​block is fixedly connected to one end of the support rod. A snap-fit ​​groove is formed on one side of the snap-fit ​​block. The receiving plate is slidably arranged inside the snap-fit ​​groove. The spring is located on one side of the receiving plate. Both ends of the spring are fixedly connected to the top of the receiving plate and the snap-fit ​​groove, respectively. The fixed block is fixed at one end of the snap-fit ​​groove. The moving block is fixed on the side of the receiving plate near the fixed block. One end of the rotating rod is rotatably engaged with the fixed block. One end of the slide rod is rotatably engaged with the moving block. The other end of the rotating rod is rotatably engaged with the other end of the slide rod.

[0007] Preferably, the fixing component includes a fixing plate, which is sleeved on one end of the support rod near the base. The fixing plate and the support rod are fixedly connected. The two sides of the side mesh are symmetrically provided with fixing grooves, which are inserted and fitted into the support rod.

[0008] Preferably, the limiting component includes a square tube and a limiting block. The limiting square tube is sleeved on the support rod and the limiting square tube and the support rod are slidably engaged. Two limiting blocks are provided, and the two limiting blocks are located between the square tube and the side mesh. A limiting groove is vertically formed on one side of the limiting block and the limiting groove is slidably engaged with the side mesh. The limiting block and the square tube are fixedly connected.

[0009] Preferably, the base has an opening, and a sealing plate that seals the opening is rotatably connected to the opening.

[0010] Preferably, a hollow rod is provided on the side of the groove away from the support rod, and the hollow rod is fixedly connected to the base.

[0011] Preferably, a positioning rod is fixedly connected inside the slot, the positioning rod passes through the receiving plate, and the positioning rod and the receiving plate are in sliding engagement.

[0012] Preferably, rubber pads are fixedly connected to the ends of the stationary block and the moving block that are close to each other.

[0013] Preferably, the base is a mesh metal structure.

[0014] Beneficial effects:

[0015] 1. The base can be placed inside the shaft by connecting the winch and hook, which facilitates the operation of going down into the shaft. The base is a working platform. Four support rods provide a connecting effect and multiple support rods ensure stability. The top net connects the top, and the guard plate provides protection to prevent debris from falling. At the same time, the opening allows users to enter the shaft when necessary. The rotating sealing plate can protect the opening.

[0016] 2. During installation, after the snap-fit ​​component passes through the first groove, it will automatically snap onto the base to prevent it from moving out. After the side panel is installed, it will be limited vertically by the fixing plate and will also limit the base, preventing the base from moving up and down. Then, the square tube is put on, and the limiting block will limit the side panel horizontally, thus fixing it. Finally, the top net is installed. The top net limits the square tube to prevent it from moving out. The top net is limited by the snap-fit ​​component and will also serve to hold the top net in place, preventing it from causing injury to the user. The entire installation is convenient and can be completed without tools.

[0017] 3. The mutual constraints between the various components mean that they must be installed in a specified order, preventing omissions or incorrect installations and effectively improving safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0019] Figure 2 This is a cross-sectional view of an embodiment;

[0020] Figure 3 A magnified view of A;

[0021] Figure 4 An enlarged view of B;

[0022] Figure 5 An enlarged view of C;

[0023] Figure 6 This is a cross-sectional view used to illustrate the snap-fit ​​assembly in an embodiment.

[0024] Reference numerals: 1. Base; 2. Groove 1; 3. Support rod; 4. Top mesh; 5. Guard plate; 6. Hook; 7. Groove 2; 8. Snap-fit ​​assembly; 9. Side mesh; 10. Fixing assembly; 11. Limiting assembly; 12. Snap-fit ​​block; 13. Slide rod; 14. Rotating rod; 15. Spring; 16. Support plate; 17. Moving block; 18. Fixed block; 19. Slot; 20. Fixing plate; 21. Fixing groove; 22. Square tube; 23. Limiting block; 24. Limiting groove; 25. Opening; 26. Sealing plate; 27. Hollow rod; 28. Positioning rod; 29. ​​Rubber pad. Detailed Implementation

[0025] The following description is merely a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of the present invention should be considered within the protection scope of the present invention. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the protection scope of the present invention.

[0026] See Figure 1 , Figure 3 and Figure 6 As shown, a protective device for a vertical shaft excavation construction platform includes a base 1. The base is a mesh metal structure, which saves materials and reduces weight. Grooves 2 are provided at each of the four corners of the base 1. Support rods 3 are longitudinally arranged on one side of each of the four grooves 2. Both ends of the support rods 3 are fixedly connected to a snap-fit ​​assembly 8. The snap-fit ​​assembly 8 includes a snap-fit ​​block 12, a sliding rod 13, a rotating rod 14, a spring 15, a receiving plate 16, a moving block 17, and a fixed block 18. One end of the snap-fit ​​block 12 is fixed to one end of the support rod 3. The connection is as follows: a slot 19 is provided on one side of the snap-fit ​​block 12, the receiving plate 16 is slidably arranged inside the slot 19, the spring 15 is located on one side of the receiving plate 16, and the two ends of the spring 15 are respectively fixedly connected to the top of the receiving plate 16 and the slot 19. The fixed block 18 is fixed at one end of the slot 19, the moving block 17 is fixed on the side of the receiving plate 16 near the fixed block 18, one end of the rotating rod 14 is rotatably engaged with the fixed block 18, one end of the sliding rod 13 is rotatably engaged with the moving block 17, and the other end of the rotating rod 14 is rotatably engaged with the other end of the sliding rod 13.

[0027] In use, the user aligns the groove on the base 1 with the corresponding locking block 12 on the support rod 3, pushes the support rod 3, and the support rod 3 moves the locking block 12. The locking block 12 then moves the rotating rod 14 until one side of the rotating rod 14 contacts the groove 2. The groove 2 pushes the rotating rod 14, and the rotation of the rotating rod 14 pushes the sliding rod 13, causing the rotating rod 14 and the sliding rod 13 to retract into the slot 19. When the groove 2 passes through the connection between the rotating rod 14 and the sliding rod 13, the spring 15 will cause the receiving plate 16 to reset. A positioning rod 28 is fixedly connected inside the slot 19. The positioning rod 28 passes through the receiving plate 16, and the positioning rod 28 and the receiving plate 16 slide together. The positioning rod 28 limits the position of the receiving rod, thus allowing the receiving plate 16 to be repositioned. The movement is more stable. The receiving plate 16 will drive the moving block 17 to move until one end of the moving block 17 and one end of the fixed block 18 come into contact with each other. The fixed block 18 and the moving block 17 are both fixedly connected with rubber pads 29. The rubber pads 29 can reduce the damage caused by the impact between the moving block 17 and the fixed block 18 and extend the service life. The moving block 17 will drive one end of the sliding rod 13 to move, so that the sliding rod 13 will extend out from the inside of the slot 19, thereby limiting the base 1. A hollow rod 27 is provided on the side of the groove 1 2 away from the support rod 3. The hollow rod 27 is fixedly connected to the base 1. The hollow rod 27 supports the base 1 and prevents the snap-fit ​​block 12 from directly contacting the ground, thus extending the service life of the snap-fit ​​assembly 8.

[0028] See Figure 2 and Figure 4As shown, a side net 9 is provided between two adjacent support rods 3. A fixing component 10 for limiting the vertical direction of the side plate is provided between the side net 9 and the support rod 3. The fixing component 10 includes a fixing plate 20. The fixing plate 20 is sleeved on the end of the support rod 3 near the base 1. The fixing plate 20 and the support rod 3 are fixedly connected. Fixing grooves 21 are symmetrically opened on both sides of the side net 9. The fixing grooves 21 and the support rod 3 are interlocked.

[0029] The side net 9 will contact the base 1. The fixing groove 21 and the fixing plate 20 correspond to each other. When the side net 9 is pushed horizontally, the fixing groove 21 and the fixing plate 20 will be interlocked, which will limit the side plate and prevent the side plate from moving in the vertical direction. At the same time, the side plate will limit the base 1 and prevent the base 1 from sliding on the support rod 3.

[0030] See Figure 5 As shown, several support rods 3 are slidably equipped with limiting components 11 for horizontally limiting the side plate. The limiting component 11 includes a square tube 22 and a limiting block 23. The limiting square tube 22 is sleeved on the support rod 3 and the limiting square tube 22 and the support rod 3 are slidably engaged. There are two limiting blocks 23, which are located between the square tube 22 and the side mesh 9. A limiting groove 24 is vertically opened on one side of the limiting block 23 and the limiting groove 24 is slidably engaged with the side mesh 9. The limiting block 23 and the square tube 22 are fixedly connected.

[0031] A square tube 22 is attached to the end of the support rod 3 away from the base 1. The two ends of the side net 9 close to the support rod 3 are aligned with the limiting groove 24. The square tube 22 is pushed, and the square tube 22 will drive the limiting block 23 to move until the square tube 22 falls on the fixing plate 20. At this time, the fixing plate 20 will support the square tube 22, and the limiting block 23 will limit the side net 9 in the horizontal direction. That is, the six-sided limiting of the side net 9 is completed, ensuring the stability of the side net 9.

[0032] See Figure 1 and Figure 2 As shown, a top net 4 is provided at the other end of the support rod 3. The top net 4 has four grooves 7 corresponding to the support rod 3. The top net 4 is installed by means of the grooves and the snap-fit ​​component 8. After installation, the top net 4 will limit the square tube 22 to prevent it from falling out. At the same time, the square tube 22 will support the top net 4 to ensure the distance between the top net 4 and the base 1 and to prevent the top net 4 from injuring the user.

[0033] The top of the top mesh 4 is equipped with a protective plate 5, and a hook 6 is fixedly connected to the top of the protective plate 5. The hook 6 is connected to the output end of the winch. The entire structure is lowered into the shaft by the winch, so that the base 1 can be placed into the shaft for easy access to the shaft. The base 1 is a working platform, and four support rods 3 serve as a connection and multiple rods to ensure stability. The top mesh 4 serves as a top connection, and the protective plate 5 serves as a protection to prevent debris from falling. The base 1 has an opening 25, and a sealing plate 26 is rotatably connected to the opening 25 to seal it. At the same time, the opening 25 allows users to enter the shaft when necessary, and the rotatably arranged sealing plate 26 can protect the opening 25.

[0034] After the snap-fit ​​component 8 passes through the groove 2, it automatically snaps into the base 1, preventing it from moving out. After the side panel is installed, it is vertically limited by the fixing plate 20, and simultaneously limits the base 1, preventing it from moving up and down. Then, the square tube 22 is fitted on, and the limiting block 23 horizontally limits the side panel, fixing it in place. Finally, the top net 4 is installed, limiting the square tube 22 and preventing it from moving out. The top net 4 is also limited by the snap-fit ​​component 8, which also serves to hold it in place, preventing injury to the user. The entire installation is convenient, requiring no tools for installation and disassembly. The mutual restraint between components necessitates following a prescribed installation order, preventing omissions or incorrect installations and effectively improving safety.

Claims

1. A protective device for a vertical shaft enlargement construction platform, comprising a base (1), characterized in that, The base (1) has four grooves (2) at its four corners. Each of the four grooves (2) has a support rod (3) arranged longitudinally on one side. The other end of the support rod (3) has a top net (4). The top of the top net (4) has a guard plate (5). The top of the guard plate (5) is fixedly connected to a hook (6). The top net (4) has four grooves (7) corresponding to the support rods (3). The grooves (2) and grooves (7) are fitted with a snap-fit ​​assembly (8). The snap-fit ​​assembly (8) is fixedly connected to both ends of the corresponding support rods (3). A side net (9) is arranged between two adjacent support rods (3). A fixing assembly (10) for limiting the vertical direction of the side plate is arranged between the side net (9) and the support rod (3). A limiting assembly (11) for limiting the horizontal direction of the side plate is slidably arranged on several support rods (3). The snap-fit ​​assembly (8) includes a snap-fit ​​block (12), a slide rod (13), a rotating rod (14), a spring (15), a receiving plate (16), a moving block (17), and a fixed block (18). One end of the snap-fit ​​block (12) is fixedly connected to one end of the support rod (3). A snap-fit ​​groove (19) is provided on one side of the snap-fit ​​block (12). The receiving plate (16) is slidably arranged inside the snap-fit ​​groove (19). The spring (15) is located on one side of the receiving plate (16). The two ends of the spring (15) are fixedly connected to the top of the receiving plate (16) and the slot (19) respectively. The fixed block (18) is fixed at one end of the slot (19). The moving block (17) is fixed on the side of the receiving plate (16) near the fixed block (18). One end of the rotating rod (14) is rotatably engaged with the fixed block (18). One end of the sliding rod (13) is rotatably engaged with the moving block (17). The other end of the rotating rod (14) is rotatably engaged with the other end of the sliding rod (13). The fixing component (10) includes a fixing plate (20), which is sleeved on one end of the support rod (3) near the base (1). The fixing plate (20) and the support rod (3) are fixedly connected. The side mesh (9) has symmetrical fixing grooves (21) on both sides, and the fixing grooves (21) and the support rod (3) are interlocked. The limiting component (11) includes a square tube (22) and a limiting block (23). The square tube (22) is sleeved on the support rod (3). The square tube (22) and the support rod (3) are slidably engaged. There are two limiting blocks (23). The two limiting blocks (23) are located between the square tube (22) and the side mesh (9). A limiting groove (24) is vertically opened on one side of the limiting block (23). The limiting groove (24) and the side mesh (9) are slidably engaged. The limiting block (23) and the square tube (22) are fixedly connected.

2. The protective device for a vertical shaft enlargement construction platform according to claim 1, characterized in that, The base (1) has an opening (25), and a sealing plate (26) is rotatably connected to the opening (25) to seal the opening (25).

3. The protective device for a vertical shaft enlargement construction platform according to claim 1, characterized in that, A hollow rod (27) is provided on the side of the groove (2) away from the support rod (3), and the hollow rod (27) is fixedly connected to the base (1).

4. The protective device for a vertical shaft enlargement construction platform according to claim 1, characterized in that, A positioning rod (28) is fixedly connected inside the slot (19). The positioning rod (28) passes through the receiving plate (16), and the positioning rod (28) and the receiving plate (16) are in sliding fit.

5. The protective device for a vertical shaft enlargement construction platform according to claim 1, characterized in that, Both the fixed block (18) and the moving block (17) are fixedly connected to rubber pads (29) at their closest points.

6. The protective device for a vertical shaft enlargement construction platform according to claim 1, characterized in that, The base is a mesh metal structure.

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