A temporary shaft inner wall protection mechanism

Abstract

The invention belongs to the field of protection equipment for vertical shafts, and specifically is a temporary vertical shaft inner wall protection mechanism, comprising a straight rod; a plurality of hinge seats are fixedly connected to the surface of the straight rod; a plurality of rotating rods are hinged on the surface of the hinge seat; the rotating rod is rotatably connected with a sliding rod at one end away from the hinge seat; an annular limit plate is provided at the corresponding position of the sliding rod, and a first through hole is opened on the surface of the annular limit plate; the sliding rod is slidably connected to the first through hole; an arc pressure plate is fixedly connected to one end of the sliding rod away from the rotating rod; a counterweight block is threadedly connected to the bottom of the straight rod; the straight rod moves downward under the action of its own gravity and the bottom counterweight block, thereby driving the rotating rod to rotate, and the rotating rod rotation belt pushes the sliding rod to slide in the first through hole, and pushes the arc pressure plate to move in the direction away from the annular limit plate, and finally the arc pressure plate is tightly pressed on the inner wall of the temporary vertical shaft, compacting the soil of the side wall of the vertical shaft, thereby reinforcing the inner wall of the vertical shaft.

Description

Technical Field

[0001] The invention belongs to the field of protection equipment for shafts, in particular to a temporary protection mechanism for inner side walls of shafts. Background Art

[0002] During the construction of subways, tunnels and other buildings today, it is often necessary to open multiple vertical shafts at the top of the tunnel for ventilation, cargo handling and other purposes. However, the temporary vertical shafts opened in some buildings are at risk of collapse due to problems such as soil viscosity, which seriously endangers the lives of construction workers.

[0003] The prior art also proposes some solutions. For example, a Chinese patent with publication number CN109518759A discloses a shaft protection device and a special water bucket, including a casing fixed on the inner wall of the shaft. The main structural point is that a dividing cone with an upper diameter smaller than a lower diameter is fixed in the casing, and a leakage pipe inserted into the inner wall of the shaft and connected to the soil is provided on the casing above the dividing cone, and a filter is provided on the leakage pipe, and a functional ring plate fixed to the casing is provided below the dividing cone. The beneficial effects of the present invention are: it can provide a safe environment to prevent people and animals from drowning after falling into the water, thereby improving safety; it can improve the hygiene of water quality, prevent bad people from throwing garbage and even substances harmful to people's health into the water, and can prevent rainwater from falling directly into the well, thereby preventing the water source in the well from being polluted; it can selectively pump out hot water and cold water, utilize the temperature of the sun, and solve the problem of inconvenience in using hot water due to the inconvenience of electricity in the mountains.

[0004] The existing technology has a relatively poor protection for the inner side of the shaft, and is unable to fix the inner wall of the temporary shaft. It is also unable to effectively protect the heads of construction workers when the shaft collapses. In addition, it is also unable to provide effective protection for the inner wall of the shaft in rainy and humid weather, causing the inner wall of the shaft to collapse easily.

[0005] To this end, the present invention provides a temporary shaft inner side wall protection mechanism. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: a temporary shaft inner wall protection mechanism described in the present invention comprises a straight rod; a plurality of hinge seats are fixedly connected to the surface of the straight rod; a plurality of rotating rods are hingedly connected to the surface of the hinge seat; a sliding rod is rotatably connected to one end of the rotating rod away from the hinge seat; an annular limiting plate is arranged at the corresponding position of the sliding rod, and a first through hole is opened on the surface of the annular limiting plate; the sliding rod is slidably connected to the first through hole; an arc-shaped pressing plate is fixedly connected to one end of the sliding rod away from the rotating rod; a counterweight is threadedly connected to the bottom of the straight rod; during operation, during the construction of the subway, a plurality of shafts need to be opened at the top of the tunnel, and some temporary shafts are not fixed with concrete, so the inner walls of the shafts are relatively fragile. This requires a protection mechanism for the inner wall of the shaft. When in use, workers need to lift the protection mechanism through the straight rod and then put the protection mechanism into the shaft. At this time, workers need to lift the annular limit plate and then slowly lower the straight rod. At this time, the straight rod moves downward under the action of its own gravity and the bottom counterweight block, thereby driving the rotating rod to rotate. The rotating rod drives the sliding rod to slide in the first pass and pushes the arc pressure plate to move away from the annular limit plate. Finally, the arc pressure plate is tightly pressed against the inner wall of the temporary shaft, compacting the soil on the side wall of the shaft, thereby reinforcing the inner wall of the shaft, preventing the soil on the inner wall of the shaft from peeling off and injuring workers working in the tunnel, ensuring the safety of workers during construction, and also preventing the occurrence of shaft collapse.

[0008] Preferably, a plurality of elastic ropes are fixedly connected to the surface of the straight rod near the bottom; one end of the elastic rope away from the straight rod is connected to the bottom surface of the annular limit plate; a plurality of the elastic ropes are fixedly connected with a partition net between each other; during operation, when the top of the shaft is stepped on by workers, or construction waste falls into the shaft, the partition net on the bottom surface of the annular limit plate can block the fallen objects to prevent the workers from being injured by the fallen objects, and at the same time, the fallen objects accumulated on the partition net can increase the weight of the straight rod, thereby increasing the pressure of the sliding rod and the arc-shaped pressure plate on the side wall of the shaft, further compacting the soil on the side wall of the shaft, and preventing the soil on the side wall from loosening, thereby preventing debris from falling and reinforcing the side wall of the shaft to prevent the shaft from collapsing, avoiding repeated construction and reducing construction costs.

[0009] Preferably, a rotating groove is provided on the bottom surface of the annular limit plate at the bottom; a winding shaft is rotatably connected to the inner wall of the rotating groove; the elastic rope extends into the rotating groove and is fixedly connected to the surface of the winding shaft; a torsion spring is arranged in the winding shaft; during operation, when the surface of the separation net is suddenly hit by excessively heavy debris, the elastic rope will pull the winding shaft, and the winding shaft will overcome the effect of the torsion spring and rotate, so that more elastic rope will be extended, increasing the deformation of the separation net, thereby slowing down the falling speed of the falling debris, preventing the debris from falling too fast and damaging the separation net, further improving the blocking effect of the separation net, and also improving the service life of the separation net and extending the use time of the separation net.

[0010] Preferably, a first pull rope is fixedly connected to the outer surface of the winding shaft; a sleeve is fixedly connected to the end of the first pull rope away from the winding shaft; a slider is slidably connected in the sleeve; a second pull rope is fixedly connected to the end of the slider away from the first pull rope; the end of the second pull rope away from the slider is fixed to the elastic rope and is slidably connected to the sleeve; a whistle is fixedly connected to the surface of the sleeve, and the whistle is connected to the sleeve; during operation, when a heavy object hits the surface of the partition net, the elastic rope drives the winding shaft to rotate, thereby driving the first pull rope and the second pull rope to move in opposite directions, and then pulling the slider to slide in the direction of the whistle, and squeezing the air in the sleeve into the whistle, making a sound to remind workers that debris has fallen, and also remind workers to clean the partition net. Cleaning the debris on the partition net helps to increase the service life of the partition net and the effect of intercepting debris.

[0011] Preferably, the sliding rod includes a connecting rod and an extension rod; the connecting rod is threadedly connected to the extension rod; one end of the extension rod away from the connecting rod is threadedly connected to the arc pressure plate; during work, when workers are reinforcing and protecting the side walls of shafts of different diameters, they can unscrew the extension rod and then replace extension rods of different lengths to adapt to the side walls of shafts of different diameters. At the same time, the arc pressure plate, the extension rod and the connecting rod are all detachable, which can effectively reduce the space occupied by the present invention during transportation, thereby reducing transportation costs. At the same time, since extension rods of different lengths can be replaced, it can adapt to shafts of different diameters, thereby improving the applicability of the present invention.

[0012] Preferably, a first slide groove is provided on one side surface of the extension rod close to the slide rod; a wedge block is slidably connected in the first slide groove; a first spring is fixedly connected between the wedge block and the bottom of the first slide groove; during operation, when the extension rod is unscrewed, the wedge block is pushed out of the first slide groove under the action of the spring elastic force, and thereby the first through hole is stuck to prevent the connecting rod from sliding out of the first through hole, so that the components of the present invention will not be separated due to vibration during transportation, thereby ensuring the integrity of the present invention during transportation, allowing workers to use it with simple assembly, and reducing the difficulty of using the present invention.

[0013] Preferably, the inner wall of the first through hole is rotatably connected with rollers that are evenly arranged; scrapers are fixedly connected to the two side openings of the first through hole; during operation, when the connecting rod moves in the first through hole, the rollers contact the surface of the connecting rod and roll, thereby reducing the friction encountered by the connecting rod during movement. At the same time, the scrapers fixedly connected to the two side holes of the first through hole can also clean the surface of the connecting rod to prevent mud from sticking to the surface of the connecting rod, which would cause the connecting rod to be obstructed from moving in the first through hole or even get stuck, thereby further extending the service life of the present invention.

[0014] Preferably, a plurality of second springs are fixedly connected to the surface of the arc pressure plate; a baffle is fixedly connected to one end of the second spring away from the arc pressure plate; a silicone block is inlaid on the surface of the arc pressure plate close to the baffle; a plurality of silicone protrusions are fixedly connected to the surface of the silicone block; and the baffle is provided with matching small holes at the positions of the silicone protrusions; when working, when the arc pressure plate is pushed by the extension rod, it drives the baffle to squeeze the inner wall of the shaft. At this time, the second spring is squeezed and contracts, so that the arc pressure plate drives the silicone block to press against the single plate, and the silicone protrusions on the surface of the silicone block extend out of the small holes and contact the inner wall of the shaft. Through the water absorption of the silicone, the moisture in the inner wall of the shaft is sucked out, thereby improving the strength of the side wall of the shaft and preventing the inner wall of the shaft from deformation and collapse.

[0015] Preferably, a plurality of hook claws are evenly arranged on the surface of the baffle plate; when the baffle plate is pressed against the inner wall of the shaft during operation, the hook claws penetrate into the soil, thereby increasing the friction between the baffle plate and the side wall of the shaft, and preventing the baffle plate from sliding against the inner wall of the shaft.

[0016] Preferably, the hook claw comprises a claw top and a claw seat; one end of the claw top near the claw seat is fixedly connected to a push rod; the claw seat is provided with a second sliding groove at a corresponding position of the push rod; the push rod is slidably connected to the second sliding groove, and a third spring is fixedly connected between the push rod and the inner wall of the second sliding groove; the claw seat surface is provided with a pair of second through holes; the second through hole is slidably connected with a barb; the surface of the barb is sleeved with a fourth spring; during operation, when the hook claw is pierced into the inner wall of the shaft, the claw top will be squeezed toward the claw seat, thereby driving the push rod to slide toward the bottom direction of the second sliding groove; at the same time, the third spring is squeezed to eject the barb and squeeze the fourth spring, and the friction force between the inner wall of the shaft and the baffle is further increased through the barb. At the same time, during transportation, the third spring pulls the push rod away from the groove wall of the second sliding groove, and under the squeezing of the third spring, the barb is retracted into the second through hole to prevent the barb from causing harm to workers during transportation and handling, thereby reducing the possibility of accidents during transportation and handling.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The temporary shaft inner wall protection mechanism described in the present invention moves downward under the action of the straight rod itself and the bottom counterweight block, thereby driving the rotating rod to rotate, and the rotating rod drives the sliding rod to slide in the first passage, and drives the arc pressure plate to move in the direction away from the annular limit plate, and finally the arc pressure plate is tightly pressed on the inner wall of the temporary shaft, compacting the soil on the shaft side wall, realizing the reinforcement of the shaft inner wall, preventing the soil on the shaft inner wall from peeling off and injuring the workers working in the tunnel, ensuring the life safety of the workers during construction, and also preventing the occurrence of shaft collapse.

[0019] 2. The temporary shaft inner wall protection mechanism described in the present invention prevents workers from being injured by falling objects through the partition net and elastic rope. At the same time, the fallen objects accumulated on the partition net can increase the weight of the straight rod, thereby increasing the pressure of the sliding rod and the arc-shaped pressure plate on the shaft side wall, further compacting the soil on the shaft side wall and preventing the soil on the side wall from loosening. In this way, while preventing debris from falling, the shaft side wall is reinforced to prevent the shaft from collapsing, avoiding repeated construction and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 is a stereogram of the present invention;

[0022] Figure 2 is a cross-sectional view of the annular limit block in the present invention;

[0023] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0024] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0025] Figure 5 yes Figure 2 A partial enlarged view of point C in the middle;

[0026] Figure 6 is a cross-sectional view of the arc-shaped pressing plate of the present invention;

[0027] Figure 7 is a cross-sectional view of the hook in the present invention;

[0028] In the figure: 1. straight rod; 2. hinge seat; 3. rotating rod; 4. sliding rod; 5. annular limit plate; 6. first through hole; 7. arc pressure plate; 8. counterweight; 9. elastic rope; 10. partition net; 11. rotating groove; 12. winding shaft; 13. first pull rope; 14. sleeve; 15. slider; 16. second pull rope; 17. whistle; 18. connecting rod; 19. extension rod; 20. first slide groove; 21. wedge block; 22. first spring; 23. roller; 24. scraper; 25. second spring; 26. baffle; 27. silicone block; 28. silicone protrusion; 29. ​​small hole; 30. hook; 31. claw top; 32. claw seat; 33. top rod; 34. second slide groove; 35. third spring; 36. second through hole; 37. barb; 38. fourth spring. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] Embodiment 1

[0031] like Figure 1 As shown, a temporary shaft inner wall protection mechanism described in an embodiment of the present invention comprises a straight rod 1; a plurality of hinge seats 2 are fixedly connected to the surface of the straight rod 1; a plurality of rotating rods 3 are hingedly connected to the surface of the hinge seat 2; a sliding rod 4 is rotatably connected to the rotating rod 3 at one end away from the hinge seat 2; an annular limiting plate 5 is provided at the corresponding position of the sliding rod 4, and a first through hole 6 is opened on the surface of the annular limiting plate 5; the sliding rod 4 is slidably connected to the first through hole 6; an arc-shaped pressing plate 7 is fixedly connected to the end of the sliding rod 4 away from the rotating rod 3; a counterweight 8 is threadedly connected to the bottom of the straight rod 1; during operation, during the construction of the subway, it is necessary to open several shafts at the top of the tunnel, and some temporary shafts are not fixed with concrete, so the inner walls of the shafts are relatively fragile, so it is necessary to When the shaft inner wall protection mechanism is used for protection, the worker needs to lift the protection mechanism through the straight rod 1 and then put the protection mechanism into the shaft. At this time, the worker needs to lift the annular limit plate 5 and then slowly put down the straight rod 1. At this time, the straight rod 1 moves downward under the action of its own gravity and the bottom counterweight block 8, thereby driving the rotating rod 3 to rotate. The rotating rod 3 drives the sliding rod 4 to slide in the first pass and pushes the arc pressure plate 7 to move away from the annular limit plate 5. Finally, the arc pressure plate 7 is tightly pressed against the inner wall of the temporary shaft to compact the soil on the side wall of the shaft, thereby reinforcing the inner wall of the shaft and preventing the soil on the inner wall of the shaft from peeling off and injuring the workers working in the tunnel, thereby ensuring the life safety of the workers during construction and preventing the occurrence of shaft collapse.

[0032] like Figure 1 to Figure 2 As shown, a plurality of elastic ropes 9 are fixedly connected to the surface of the straight rod 1 near the bottom; one end of the elastic rope 9 away from the straight rod 1 is connected to the bottom surface of the annular limiting plate 5; a plurality of elastic ropes 9 are fixedly connected with a partition net 10 between each other; during operation, when the top of the shaft is stepped on by workers, or construction waste falls into the shaft, the partition net 10 on the bottom surface of the annular limiting plate 5 can block the falling objects to prevent the workers from being injured by the falling objects, and at the same time, the falling objects accumulated on the partition net 10 can increase the weight of the straight rod 1, thereby increasing the pressure of the sliding rod 4 and the arc-shaped pressure plate 7 on the side wall of the shaft, further compacting the soil on the side wall of the shaft, and preventing the soil on the side wall from loosening, thereby preventing debris from falling and reinforcing the side wall of the shaft to prevent the shaft from collapsing, avoiding repeated construction and reducing construction costs.

[0033] like Figures 2 to 3As shown, a rotating groove 11 is provided on the bottom surface of the annular limiting plate 5 at the bottom; a winding shaft 12 is rotatably connected to the inner wall of the rotating groove 11; the elastic rope 9 extends into the rotating groove 11 and is fixedly connected to the surface of the winding shaft 12; a torsion spring is arranged in the winding shaft 12; during operation, when the surface of the partition net 10 is suddenly hit by excessively heavy debris, the elastic rope 9 will pull the winding shaft 12, and the winding shaft 12 overcomes the effect of the torsion spring and rotates, so that more elastic ropes 9 are extended, increasing the deformation of the partition net 10, thereby slowing down the falling speed of the falling debris, preventing the debris from falling too fast and damaging the partition net 10, further improving the blocking effect of the partition net 10, and also improving the service life of the partition net 10, extending the use time of the partition net 10.

[0034] like Figures 2 to 3 As shown, a first pull rope 13 is fixedly connected to the outer surface of the winding shaft 12; a sleeve 14 is fixedly connected to the end of the first pull rope 13 away from the winding shaft 12; a slider 15 is slidably connected inside the sleeve 14; a second pull rope 16 is fixedly connected to the end of the slider 15 away from the first pull rope 13; an end of the second pull rope 16 away from the slider 15 is fixedly connected to the elastic rope 9 and is slidably connected to the sleeve 14; a whistle 17 is fixedly connected to the surface of the sleeve 14, and the whistle 17 is connected to the sleeve 14; During operation, when a heavy object hits the surface of the partition net 10, the elastic rope 9 drives the winding shaft 12 to rotate, thereby driving the first pull rope 13 and the second pull rope 16 to move in opposite directions, and then pulling the slider 15 to slide in the direction of the whistle 17, and squeezing the air in the sleeve 14 into the whistle 17, making a sound to remind the workers that there is debris falling, and also reminding the workers to clean the partition net 10. Cleaning the debris on the partition net 10 helps to increase the service life of the partition net 10 and the interception effect of debris.

[0035] like Figure 2 and Figure 4 As shown, the sliding rod 4 includes a connecting rod 18 and an extension rod 19; the connecting rod 18 is threadedly connected to the extension rod 19; the end of the extension rod 19 away from the connecting rod 18 is threadedly connected to the arc pressure plate 7; during work, when workers are reinforcing and protecting the side walls of shafts of different diameters, they can unscrew the extension rod 19 and then replace the extension rods 19 of different lengths to adapt to the side walls of shafts of different diameters. At the same time, the arc pressure plate 7, the extension rod 19 and the connecting rod 18 can all be disassembled, which can effectively reduce the space occupied by the present invention during transportation, thereby reducing the transportation cost. At the same time, since the extension rods 19 of different lengths can be replaced, it can adapt to shafts of different diameters, thereby improving the applicability of the present invention.

[0036] like Figure 2 and Figure 5As shown, a first slide groove 20 is provided on one side surface of the extension rod 19 close to the slide rod 4; a wedge block 21 is slidably connected in the first slide groove 20; a first spring 22 is fixedly connected between the wedge block 21 and the bottom of the first slide groove 20; during operation, when the extension rod 19 is unscrewed, the wedge block 21 is pushed out of the first slide groove 20 under the action of the spring elastic force, and thereby the first through hole 6 is stuck to prevent the connecting rod 18 from sliding out of the first through hole 6, so that the components of the present invention will not be separated due to vibration during transportation, thereby ensuring the integrity of the present invention during transportation, so that workers only need to assemble it simply to use it, reducing the difficulty of using the present invention.

[0037] like Figure 2 and Figure 5 As shown, the inner wall of the first through hole 6 is rotatably connected with rollers 23 arranged evenly; the two side openings of the first through hole 6 are fixedly connected with scrapers 24; during operation, when the connecting rod 18 moves in the first through hole 6, the rollers 23 contact the surface of the connecting rod 18 and roll, which reduces the friction encountered by the connecting rod 18 during movement. At the same time, the scrapers 24 fixedly connected to the two side holes of the first through hole 6 can also clean the surface of the connecting rod 18 to prevent the surface of the connecting rod 18 from being stuck with mud, which causes the movement of the connecting rod 18 in the first through hole 6 to be obstructed or even stuck, further extending the service life of the present invention.

[0038] Embodiment 2

[0039] like Figure 6 As shown, compared with Example 1, another implementation of the present invention is: a plurality of second springs 25 are fixedly connected to the surface of the arc pressure plate 7; a baffle 26 is fixedly connected to one end of the second spring 25 away from the arc pressure plate 7; a silicone block 27 is inlaid on the surface of the arc pressure plate 7 close to the baffle 26; a plurality of silicone protrusions 28 are fixedly connected to the surface of the silicone block 27; the baffle 26 is provided with a matching small hole 29 at the position of the silicone protrusion 28; when working, when the arc pressure plate 7 is pushed by the extension rod 19, the baffle 26 is driven to squeeze the inner wall of the shaft. At this time, the second spring 25 is squeezed and contracted, so that the arc pressure plate 7 drives the silicone block 27 to press against the single board, and the silicone protrusions on the surface of the silicone block 27 extend out of the small hole 29 and contact the inner wall of the shaft. Through the water absorption of the silicone, the moisture in the inner wall of the shaft is sucked out, thereby improving the strength of the side wall of the shaft and preventing the inner wall of the shaft from deformation and collapse.

[0040] like Figure 6 As shown, a plurality of hooks 30 are evenly arranged on the surface of the baffle 26; during operation, when the baffle 26 is pressed against the inner wall of the shaft, the hooks pierce the soil, thereby increasing the friction between the baffle 26 and the side wall of the shaft, preventing the present invention from sliding with the inner wall of the shaft.

[0041] like Figure 7As shown, the hook claw 30 includes a claw top 31 and a claw seat 32; a push rod 33 is fixedly connected to one end of the claw top 31 close to the claw seat 32; a second slide groove 34 is provided on the claw seat 32 at a position corresponding to the push rod 33; the push rod 33 is slidably connected to the second slide groove 34, and a third spring 35 is fixedly connected between the push rod 33 and the inner wall of the second slide groove 34; a pair of second through holes 36 are provided on the surface of the claw seat 32; a barb 37 is slidably connected in the second through hole 36; a fourth spring 38 is sleeved on the surface of the barb 37; when the hook claw is working, the claw top 31 is inserted into the inner wall of the shaft, and the hook claw 31 is pressed against the inner wall of the shaft. 31 will be squeezed toward the claw seat 32, thereby driving the push rod 33 to slide toward the bottom of the second slide groove 34; at the same time, the third spring 35 is squeezed to push out the barb 37 and squeeze the fourth spring 38, and the friction between the inner wall of the shaft and the baffle 26 is further increased through the barb 37. At the same time, during transportation, the third spring 35 pulls the push rod 33 away from the wall of the second slide groove 34, and under the squeezing of the third spring 35, the barb 37 is retracted into the second through hole 36, so as to prevent the barb 37 from causing harm to workers during transportation and handling, thereby reducing the possibility of accidents during transportation and handling.

[0042] When working, in the process of subway construction, it is necessary to open several shafts at the top of the tunnel. Some temporary shafts are not fixed with concrete, so the inner wall of the shaft is relatively fragile. For this reason, a protective mechanism for the inner wall of the shaft is needed to protect it. When in use, workers need to lift the protective mechanism through the straight rod 1 and then put the protective mechanism into the shaft. At this time, the workers need to lift the annular limit plate 5 and then slowly put the straight rod 1 down. At this time, the straight rod 1 moves downward under the action of its own gravity and the bottom counterweight block 8, thereby driving the rotating rod 3 to rotate. The rotating rod 3 drives the sliding rod 4 to slide in the first pass and pushes the arc pressure plate 7 to move in the direction away from the annular limit plate 5. Finally, the arc pressure plate 7 is tightly pressed on the inner wall of the temporary shaft, compacting the soil on the side wall of the shaft, and reinforcing the inner wall of the shaft to prevent the soil on the inner wall of the shaft from peeling off and injuring the workers working in the tunnel, thereby ensuring the life safety of the workers during construction and preventing the occurrence of shaft collapse.

[0043] When the top of the shaft is trampled on by workers or construction waste falls into the shaft, the partition net 10 on the bottom surface of the annular limit plate 5 can block the falling objects to prevent the workers from being injured by the falling objects. At the same time, the fallen objects accumulated on the partition net 10 can increase the weight of the straight rod 1, thereby increasing the pressure of the slide bar 4 and the arc-shaped pressure plate 7 on the side wall of the shaft, further compacting the soil on the side wall of the shaft to prevent the soil on the side wall from loosening. This prevents debris from falling and reinforces the side wall of the shaft to prevent the shaft from collapsing, avoiding repeated construction and reducing construction costs.

[0044] When the surface of the partition net 10 is suddenly hit by heavy debris, the elastic rope 9 will pull the winding shaft 12, and the winding shaft 12 will overcome the effect of the torsion spring and rotate, so that more elastic rope 9 will be extended, increasing the deformation of the partition net 10, thereby slowing down the falling speed of the falling debris and preventing the debris from falling too fast and damaging the partition net 10. While further improving the blocking effect of the partition net 10, it also increases the service life of the partition net 10 and extends the use time of the partition net 10.

[0045] When a heavy object hits the surface of the partition net 10, the elastic rope 9 drives the winding shaft 12 to rotate, thereby driving the first pull rope 13 and the second pull rope 16 to move in opposite directions, and then pulling the slider 15 to slide in the direction of the whistle 17, and squeezing the air in the sleeve 14 into the whistle 17, making a sound to remind the workers that there are fallen debris, and also remind the workers to clean the partition net 10. Cleaning the debris on the partition net 10 helps to increase the service life of the partition net 10 and the interception effect of debris.

[0046] When workers are reinforcing and protecting the side walls of shafts of different diameters, they can unscrew the extension rod 19 and then replace the extension rods 19 with different lengths to adapt to the side walls of shafts of different diameters. At the same time, the arc pressure plate 7, the extension rod 19 and the connecting rod 18 can be disassembled, which can effectively reduce the space occupied by the present invention during transportation, thereby reducing transportation costs. At the same time, since the extension rods 19 of different lengths can be replaced, it can adapt to shafts of different diameters, thereby improving the applicability of the present invention.

[0047] When the extension rod 19 is unscrewed, the wedge block 21 is pushed out of the first slide groove 20 under the action of the spring force, and thereby clamps the first through hole 6 to prevent the connecting rod 18 from sliding out of the first through hole 6, so that the components of the present invention will not be separated due to vibration during transportation, thereby ensuring the integrity of the present invention during transportation, allowing workers to use it with simple assembly, reducing the difficulty of using the present invention.

[0048] When the connecting rod 18 moves in the first through hole 6, the roller 23 contacts the surface of the connecting rod 18 and rolls, reducing the friction encountered by the connecting rod 18 during movement. At the same time, the scrapers 24 fixed to the two side holes of the first through hole 6 can also clean the surface of the connecting rod 18 to prevent mud from sticking to the surface of the connecting rod 18, which would cause the connecting rod 18 to be obstructed from moving in the first through hole 6 or even get stuck, further extending the service life of the present invention.

[0049] When the arc pressure plate 7 is pushed by the extension rod 19, it drives the baffle 26 to squeeze the inner wall of the shaft. At this time, the second spring 25 is squeezed and contracts, so that the arc pressure plate 7 drives the silicone block 27 to press against the single board, and the silicone protrusions on the surface of the silicone block 27 extend out of the small holes 29 to contact the inner wall of the shaft. Through the water absorption of the silicone, the moisture in the inner wall of the shaft is absorbed, thereby improving the strength of the side wall of the shaft and preventing the inner wall of the shaft from deformation and collapse.

[0050] When the baffle 26 is pressed against the inner wall of the shaft, the hooks penetrate into the soil, thereby increasing the friction between the baffle 26 and the shaft wall, preventing the present invention from sliding against the inner wall of the shaft.

[0051] When the hook is inserted into the inner wall of the shaft, the claw top 31 will be squeezed toward the claw seat 32, thereby driving the push rod 33 to slide toward the bottom of the second slide groove 34; at the same time, the third spring 35 is squeezed to push out the barb 37 and squeeze the fourth spring 38. The friction between the inner wall of the shaft and the baffle 26 is further increased through the barb 37. At the same time, during transportation, the third spring 35 pulls the push rod 33 away from the wall of the second slide groove 34, and under the squeezing of the third spring 35, the barb 37 is retracted into the second through hole 36, so as to prevent the barb 37 from causing harm to workers during transportation and handling, thereby reducing the possibility of accidents during transportation and handling.

[0052] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A temporary shaft inner wall protection mechanism, characterized in that: The invention comprises a straight rod (1); a plurality of hinge seats (2) are fixedly connected to the surface of the straight rod (1); a plurality of rotating rods (3) are hingedly connected to the surface of the hinge seat (2); an end of the rotating rod (3) away from the hinge seat (2) is rotatably connected to a sliding rod (4); an annular limiting plate (5) is provided at a corresponding position of the sliding rod (4), and a first through hole (6) is opened on the surface of the annular limiting plate (5); the sliding rod (4) is slidably connected to the first through hole (6); an arc-shaped pressing plate (7) is fixedly connected to the end of the sliding rod (4) away from the rotating rod (3); a counterweight block (8) is threadedly connected to the bottom of the straight rod (1); A plurality of elastic ropes (9) are fixedly connected to the surface of the straight rod (1) near the bottom; one end of the elastic rope (9) away from the straight rod (1) is connected to the bottom surface of the annular limiting plate (5); and a partition net (10) is fixedly connected between each of the plurality of elastic ropes (9); A rotation groove (11) is provided on the bottom surface of the annular limiting plate (5) at the bottom; the inner wall of the rotation groove (11) is rotatably connected to a winding shaft (12); the elastic rope (9) extends into the rotation groove (11) and is fixedly connected to the surface of the winding shaft (12); a torsion spring is provided in the winding shaft (12); A first pull rope (13) is fixedly connected to the outer surface of the winding shaft (12); an end of the first pull rope (13) away from the winding shaft (12) is fixedly connected to a sleeve (14); a slider (15) is slidably connected inside the sleeve (14); an end of the slider (15) away from the first pull rope (13) is fixedly connected to a second pull rope (16); an end of the second pull rope (16) away from the slider (15) is fixedly connected to an elastic rope (9) and is slidably connected to the sleeve (14); a whistle (17) is fixedly connected to the surface of the sleeve (14), and the whistle (17) is connected to the sleeve (14).

2. A temporary shaft inner wall protection mechanism according to claim 1, characterized in that: The sliding rod (4) comprises a connecting rod (18) and an extension rod (19); the connecting rod (18) and the extension rod (19) are threadedly connected; and one end of the extension rod (19) away from the connecting rod (18) is threadedly connected to the arc-shaped pressing plate (7).

3. A temporary shaft inner wall protection mechanism according to claim 2, characterized in that: A first slide groove (20) is provided on a side surface of the extension rod (19) close to the connecting rod (18); a wedge block (21) is slidably connected in the first slide groove (20); and a first spring (22) is fixedly connected between the wedge block (21) and the bottom of the first slide groove (20).

4. A temporary shaft inner wall protection mechanism according to claim 1, characterized in that: The inner wall of the first through hole (6) is rotatably connected to rollers (23) that are evenly arranged; and scrapers (24) are fixedly connected to the openings on both sides of the first through hole (6).

5. A temporary shaft inner wall protection mechanism according to claim 1, characterized in that: A plurality of second springs (25) are fixedly connected to the surface of the arc-shaped pressure plate (7); a baffle (26) is fixedly connected to one end of the second spring (25) away from the arc-shaped pressure plate (7); a silicone block (27) is embedded on the surface of one side of the arc-shaped pressure plate (7) close to the baffle (26); a plurality of silicone protrusions (28) are fixedly connected to the surface of the silicone block (27); and a matching small hole (29) is opened on the baffle (26) at the position of the silicone protrusion (28).

6. A temporary shaft inner wall protection mechanism according to claim 5, characterized in that: A plurality of hook claws (30) are evenly arranged on the surface of the baffle (26).

7. A temporary shaft inner wall protection mechanism according to claim 6, characterized in that: The hook claw (30) comprises a claw top (31) and a claw seat (32); a push rod (33) is fixedly connected to one end of the claw top (31) close to the claw seat (32); a second slide groove (34) is provided on the claw seat (32) at a position corresponding to the push rod (33); the push rod (33) is slidably connected to the second slide groove (34), and a third spring (35) is fixedly connected between the push rod (33) and the inner wall of the second slide groove (34); a pair of second through holes (36) are provided on the surface of the claw seat (32); a barb (37) is slidably connected in the second through hole (36); and a fourth spring (38) is sleeved on the surface of the barb (37).

Images