Anti-falling device for offshore shaft hoisting
By installing guide rails and sliders in the offshore shaft, the elastic sliding of the movable spinous blocks and support springs can be used to realize one-way sliding of the slider in the guide rails and control the sliding of the support plates, solving the problem that lifting equipment is prone to fall in the shaft, and improving the safety and service life of the equipment.
Patent Information
- Application Number
- CN202421989436.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-16
AI Technical Summary
During the construction of the marine shield, when lifting equipment is lifted in the shaft, it is prone to fall due to rope breakage or equipment failure, resulting in equipment damage and safety accidents.
A sea shaft lifting anti-fall device is designed. By installing guide rails and sliders on the inner wall of the shaft, the elastic sliding of the movable spinous blocks and support springs is used to realize the one-way sliding of the slider in the guide rail, thereby controlling the sliding of the support plate to protect the lifting parts from falling.
It effectively prevents the lifting equipment from falling in the shaft, improves the safety and service life of the equipment, and avoids damage and accidents caused by falling.
Smart Images
Figure CN222907400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of offshore hoisting, in particular to an anti-falling device for offshore shaft hoisting. Background Technique
[0002] A vertically walled well-shaped pipeline is called a shaft. During the offshore shield tunneling construction process, the use of the shaft is particularly important, which is convenient for the reception of the shield machine and the use of equipment. When performing equipment recovery operations on the shield machine, the hoisting operation of the equipment is completed through the use of an offshore hoisting ship. However, when performing hoisting operations on existing hoisting equipment, it completely relies on the support of hoisting ropes for the hoisting equipment. During the hoisting process, once the rope breaks or the equipment fails, it is easy to cause the hoisting equipment to fall in the shaft, resulting in damage to the equipment and the occurrence of safety accidents. Content of the Utility Model
[0003] The purpose of the utility model is to provide an anti-falling device for offshore shaft hoisting, so as to solve the problem that when the hoisting equipment is supported by hoisting ropes during hoisting, once the rope breaks or the equipment fails during hoisting, it is easy to cause the hoisting equipment to fall in the shaft, resulting in damage to the equipment and the occurrence of safety accidents as mentioned in the above background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: An anti-falling device for offshore shaft hoisting, including a hoisting ship, a shaft and a support plate. A hoisting piece is hoisted on the surface of the hoisting ship. Guide rails are connected to the inner wall of the shaft by bolts. Telescopic grooves are opened on the inner side of the guide rails. A support spring is fixedly connected to the inner side of the telescopic grooves. A movable ratchet block is fixedly connected to the surface of the support spring. A reinforcing plate is fixedly connected to the inner side of the telescopic grooves. A slider is slidably connected to the inner side of the telescopic grooves. A fixed ratchet block is fixedly connected to one side of the slider. A steel cable is fixedly connected to the other side of the slider. A resisting ball is movably connected to the inner wall of the guide rail. The end of the steel cable far from the slider is fixedly connected to a hanging ring. A connecting ring plate is movably connected to the surface of the hanging ring. A stabilizing plate is fixedly connected to the surface of the support plate. A connecting ring is fixedly connected to the outer surface of the support plate.
[0005] Preferably, the support plate is connected to the hoisting piece by bolts. Ropes are arranged on the surface of the hoisting ship. The hoisting ship hoists the hoisting piece through the ropes. The guide rails are distributed in four groups on the inner wall of the shaft.
[0006] Preferably, the support plate and the stabilizing plate form a "well" shape. The cross-section of the slider is in an "I" shape. The cross-section of the guide rail is in a "concave" shape.
[0007] Preferably, the movable ratchet blocks are evenly distributed inside the guide rail. The telescopic grooves and the movable ratchet blocks are correspondingly opened inside the guide rail. The surfaces of both the movable ratchet block and the fixed ratchet block are arc-shaped, and the arc-shaped surfaces of the fixed ratchet block and the movable ratchet block are oppositely distributed. A screw rod is fixedly connected to the surface of the movable ratchet block, and a nut is sleeved on the screw rod passing through the surface of the guide rail.
[0008] Preferably, the abutting balls are evenly distributed inside the guide rail. The abutting balls are rotationally connected to the slider in an abutting manner. The movable ratchet block is elastically slidably connected to the telescopic groove through a support spring. The reinforcing plate is in abutting connection with the surface of the movable ratchet block.
[0009] Preferably, the support plate is slidably connected to the guide rail through a steel cable. The hanging ring and the connecting ring plate form a circular ring shape. The hanging ring and the connecting ring plate are connected by bolts. The connecting ring is in a semi-circular ring shape.
[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0011] 1. Through the connection between the shaft and the guide rail, under the sliding connection of the guide rail and the slider, through the connection between the slider and the fixed ratchet block, and the sliding connection between the movable ratchet block and the guide rail, under the abutting and sliding of the fixed ratchet block and the movable ratchet block, the one-way sliding operation of the slider inside the guide rail is completed. Through the connection between the slider and the steel cable, and the connection between the steel cable and the connecting ring, the sliding control effect of the support plate between the guide rails is realized. Under the bolt connection between the support plate and the hoisting member, it is realized that the support plate moves together with the hoisting member. The slider slides on the guide rail under the action of the steel cable. Under the action of the fixed ratchet block and the movable ratchet block, and the connection between the movable ratchet block and the support spring, the tight abutting effect between the fixed ratchet block and the movable ratchet block is realized. Through the one-way sliding operation between the slider and the guide rail, the anti-falling protection effect of the hoisting member during hoisting in the shaft is achieved. Through the connection between the hanging ring and the connecting ring plate, and under the connection between the hanging ring and the connecting ring, the separation operation between the steel cable and the support plate is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is the engineering schematic diagram of the present utility model;
[0013] Figure 2 is the three-dimensional structure schematic diagram of the present utility model;
[0014] Figure 3 is the partial three-dimensional structure schematic diagram of the connection structure between the guide rail and the support plate of the present utility model;
[0015] Figure 4 is the partial three-dimensional exploded schematic diagram of the connection structure between the guide rail and the slider of the present utility model;
[0016] Figure 5 For the present utility model Figure 3 the enlarged structure schematic diagram at A in
[0017] Figure 6 For the present utility model Figure 4 is a schematic enlarged structure view at position B in this utility model.
[0018] In the figure: 1, hoisting ship; 2, hoisting member; 3, vertical shaft; 4, guide rail; 41, slider; 42, telescopic groove; 43, movable ratchet block; 44, fixed ratchet block; 45, abutting ball; 46, support spring; 47, reinforcing plate; 48, steel cable; 5, support plate; 51, stabilizing plate; 52, connecting ring; 53, lifting ring; 54, connecting ring plate. Specific embodiments
[0019] Please refer to Figures 1-6 , an embodiment provided by the present utility model:
[0020] A fall prevention device for hoisting a marine vertical shaft, comprising a hoisting ship 1, a vertical shaft 3 and a support plate 5. A hoisting member 2 is hoisted on the surface of the hoisting ship 1. The inner wall of the vertical shaft 3 is bolted with a guide rail 4. A telescopic groove 42 is formed inside the guide rail 4. A support spring 46 is fixedly connected inside the telescopic groove 42. A movable ratchet block 43 is fixedly connected to the surface of the support spring 46. A reinforcing plate 47 is fixedly connected inside the telescopic groove 42. A slider 41 is slidably connected inside the telescopic groove 42. A fixed ratchet block 44 is fixedly connected to one side of the slider 41. A steel cable 48 is fixedly connected to the other side of the slider 41. An abutting ball 45 is movably connected to the inner wall of the guide rail 4. One end of the steel cable 48 away from the slider 41 is fixedly connected with a lifting ring 53. A connecting ring plate 54 is movably connected to the surface of the lifting ring 53. A stabilizing plate 51 is fixedly connected to the surface of the support plate 5. A connecting ring 52 is fixedly connected to the outer surface of the support plate 5. Through the connection between the vertical shaft 3 and the guide rail 4, under the sliding connection between the guide rail 4 and the slider 41, and through the connection between the fixed ratchet block 44 and the movable ratchet block 43, the one-way sliding effect of the slider 41 inside the guide rail 4 is realized, and further the fall prevention protection effect for the hoisting member 2 during hoisting is achieved.
[0021] Furthermore, the support plate 5 is connected to the hoisting member 2 by bolts. A rope is provided on the surface of the hoisting ship 1. The hoisting ship 1 hoists the hoisting member 2 through the rope. The guide rails 4 are distributed in four groups on the inner wall of the vertical shaft 3. Through the connection between the support plate 5 and the hoisting member 2, under the action of the support plate 5, the protection and support effect for the hoisting member 2 is realized. Under the connection between the guide rail 4 and the vertical shaft 3, the protection effect for the hoisting member 2 during hoisting inside the vertical shaft 3 is achieved.
[0022] Furthermore, the support plate 5 and the stabilizing plate 51 form a "well" shape. The cross section of the slider 41 is in an "I" shape. The cross section of the guide rail 4 is in a "concave" shape. Through the connection between the support plate 5 and the stabilizing plate 51, under the action of the stabilizing plate 51, the stability performance of the support plate 5 during use is enhanced.
[0023] Further, the movable ratchet blocks 43 are evenly distributed inside the guide rail 4. The telescopic slots 42 and the movable ratchet blocks 43 are correspondingly opened inside the guide rail 4. The surfaces of both the movable ratchet blocks 43 and the fixed ratchet blocks 44 are arc-shaped. Moreover, the fixed ratchet blocks 44 and the movable ratchet blocks 43 are distributed oppositely with their arc-shaped surfaces facing each other. A screw rod is fixedly connected to the surface of the movable ratchet block 43, and the screw rod passes through the surface of the guide rail 4 and is sleeved with a nut. Through the connection between the guide rail 4 and the movable ratchet block 43, under the elastic sliding connection between the movable ratchet block 43 and the telescopic slot 42, and the engaging connection between the fixed ratchet block 44 and the movable ratchet block 43, the one-way sliding effect of the slider 41 inside the guide rail 4 is achieved. Through the connection between the movable ratchet block 43 and the screw rod, and the connection between the screw rod and the nut, the control and support effect on the acting position of the movable ratchet block 43 inside the telescopic slot 42 can be realized, which is convenient for releasing the one-way sliding state of the slider 41 inside the guide rail 4.
[0024] Further, the abutting balls 45 are evenly distributed inside the guide rail 4. The abutting balls 45 are rotationally and engagingly connected to the slider 41. The movable ratchet block 43 is elastically slidably connected to the telescopic slot 42 through a support spring 46. The reinforcing plate 47 is in abutting connection with the surface of the movable ratchet block 43. Through the connection between the guide rail 4 and the abutting balls 45, under the action of the abutting balls 45, the smooth performance and effect of the slider 41 sliding inside the guide rail 4 are realized. Through the connection between the support spring 46 and the movable ratchet block 43, under the action of the support spring 46, the elastic sliding effect of the movable ratchet block 43 inside the telescopic slot 42 is realized. Under the action of the reinforcing plate 47, the support stability of the movable ratchet block 43 sliding inside the telescopic slot 42 is improved.
[0025] Further, the support plate 5 is slidably connected to the guide rail 4 through a steel cable 48. The suspension ring 53 and the connecting ring plate 54 form a circular ring shape. The suspension ring 53 and the connecting ring plate 54 are connected by bolts. The connecting ring 52 is in a semi-circular ring shape. Through the connection between the steel cable 48 and the suspension ring 53, under the rotational connection between the suspension ring 53 and the connecting ring plate 54, under the action of the connecting ring plate 54, the connection control operation of the suspension ring 53 on the connecting ring 52 is facilitated, thereby realizing the connection and separation operation between the support plate 5 and the steel cable 48.
[0026] Working principle: When hoisting the hoisting piece 2, through the action of the ropes on the hoisting ship 1, the hoisting operation of the hoisting piece 2 in the shaft 3 is completed. Before hoisting the hoisting piece 2, the support plate 5 is connected to the hoisting piece 2. When hoisting the hoisting piece 2, the position of the support plate 5 changes with the change of the position of the hoisting piece 2. At this time, the slider 41 slides in the guide rail 4 through the support plate 5 and the steel cable 48. Through the connection between the slider 41 and the fixed ratchet 44, and the connection between the guide rail 4 and the movable ratchet 43, the one-way sliding operation of the slider 41 in the guide rail 4 is realized. When the hoisting piece 2 falls, at this time, the fixed ratchet 44 and the movable ratchet 43 are engaged, and the movable ratchet 43 and the reinforcing plate 47 are engaged, so as to achieve the support control effect on the position of the slider 41 in the guide rail 4 and complete the anti-falling operation of the hoisting piece 2 during hoisting in the shaft 3.
Claims
1. An offshore shaft hoisting anti-falling device, comprising a hoisting ship, a shaft and a support plate, characterized in that: The surface of the hoisting ship is hoisted with hoisting components. The inner wall of the shaft is connected with guide rails by bolts. A telescopic groove is opened inside the guide rail. A support spring is fixedly connected inside the telescopic groove. A movable ratchet block is fixedly connected to the surface of the support spring. A reinforcing plate is fixedly connected inside the telescopic groove. A slider is slidably connected inside the telescopic groove. A fixed ratchet block is fixedly connected to one side of the slider. A steel cable is fixedly connected to the other side of the slider. A counter ball is movably connected to the inner wall of the guide rail. The end of the steel cable away from the slider is fixedly connected with a hanging ring. A connecting ring plate is movably connected to the surface of the hanging ring. A stabilizing plate is fixedly connected to the surface of the support plate. A connecting ring is fixedly connected to the outer surface of the support plate.
2. The offshore shaft hoisting anti-falling device according to claim 1 is characterized by: The support plate is connected to the hoisting component by bolts. Ropes are arranged on the surface of the hoisting ship. The hoisting ship hoists the hoisting component through the ropes. The guide rails are distributed in four groups on the inner wall of the shaft.
3. The offshore shaft hoisting anti-falling device according to claim 1 is characterized by: The support plate and the stabilizing plate form a "well" shape. The cross-section of the slider is in an "I" shape. The cross-section of the guide rail is in a "concave" shape.
4. The offshore shaft hoisting anti-falling device according to claim 1 is characterized by: The movable ratchet blocks are evenly distributed inside the guide rail. The telescopic groove and the movable ratchet block are correspondingly opened inside the guide rail. The surfaces of both the movable ratchet block and the fixed ratchet block are arc-shaped. The arc-shaped surfaces of the fixed ratchet block and the movable ratchet block are oppositely distributed. A screw rod is fixedly connected to the surface of the movable ratchet block, and the screw rod passes through the surface of the guide rail and is sleeved with a nut.
5. The offshore shaft hoisting anti-falling device according to claim 1 is characterized by: The counter balls are evenly distributed inside the guide rail. The counter balls are in abutting and rotational connection with the slider. The movable ratchet block is elastically slidably connected to the telescopic groove through the support spring. The reinforcing plate is in abutting connection with the surface of the movable ratchet block.
6. The offshore shaft hoisting anti-falling device according to claim 1, characterized in that: The support plate is slidably connected to the guide rail through the steel cable. The hanging ring and the connecting ring plate form a circular shape. The hanging ring and the connecting ring plate are connected by bolts. The connecting ring is in a semi-circular ring shape.