An inner air duct installation structure for a shaft construction and a construction method thereof

Abstract

The application provides an inner air pipe installation structure for shaft construction and a construction method thereof, and relates to the technical field of inner air pipe installation structures and construction methods thereof. The application comprises an inner air pipe, the side surface of the upper end of the inner air pipe is fixedly connected with a limiting guard plate, a limiting hole is arranged on the inner side surface of the inner air pipe close to the upper end, and a supporting device is arranged on the inner side surface of the inner air pipe close to the middle position. The wall is fixed in a simple and convenient way by the mode that the supporting bracket contacts the wall through the movement of the first worm gear and the supporting bracket, the wall is not left with a hole on the shaft wall, the inner air pipe is limited by the upward movement of the movable disc driven by the rotation of the second screw rod, so that the first short rod and the second short rod are folded, the installation and dismounting are facilitated, and the first short rod and the second short rod stop rotating after limiting the inner air pipe, so that the over-limiting is prevented through the cooperation of the second worm gear and the torsional spring.

Description

Technical Field

[0001] This invention relates to the technical field of internal duct installation structure and construction method, specifically to an internal duct installation structure and construction method for vertical shaft construction. Background Technology

[0002] Shaft ventilation ducts refer to ventilation pipes installed in the vertical shafts of mines or buildings to transport air or exhaust waste gases. Their main functions are to provide fresh air, dilute and remove harmful gases, help control the temperature inside the shaft to prevent overheating or overcooling, reduce dust concentration, and ensure good ventilation conditions within the shaft to protect the safety of workers and the normal operation of equipment.

[0003] The current method of installing internal ductwork involves setting up an operating platform between the inner walls of the shaft to install the ductwork, and then using flanges and bolts on the ductwork to install it inside the shaft. For ease of installation, the flanges are usually located on the outside. This method of installing the bolts to the surrounding walls via the operating platform is relatively troublesome and time-consuming. Furthermore, some ductwork requires the bolts to be unscrewed after construction to remove the internal ductwork, which is also quite troublesome. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an internal ventilation duct installation structure and its construction method for vertical shaft construction, solving the problems of cumbersome and time-consuming installation and dismantling of internal ventilation ducts.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an internal ventilation duct installation structure and construction method for vertical shaft construction, comprising an internal ventilation duct, wherein a limit plate is fixedly connected to the side surface of the upper end of the internal ventilation duct, a limit hole is formed on the inner side surface of the internal ventilation duct near the upper end, a support device is provided on the inner side surface of the internal ventilation duct near the middle position, a rotating rod is provided on the inner side surface of the internal ventilation duct, two worm gears are respectively provided near both ends of the rotating rod, a handle is fixedly connected to the front end of the rotating rod, a chain is rotatably connected between the two rotating rods, and a fixing device is provided on the inner side surface of the internal ventilation duct near the worm gears.

[0008] Preferably, the support device includes a first lead screw, a first worm gear, a movable bracket, a limiting block, a support bracket, a threaded hole, and bolts. The first worm gear is meshed with a worm and is fixedly connected to the side surface of the first lead screw. The first lead screw is rotatably connected to the inner surface of the inner air duct.

[0009] Preferably, the limiting blocks are threadedly connected to the side surface of the first lead screw, the moving bracket is fixedly connected to the side surface of the limiting block, the moving bracket is slidably connected to the inner side surface of the inner air duct, and the supporting bracket is movably connected to the side surface of the moving bracket.

[0010] Preferably, the supporting bracket is slidably connected to the inner side surface of the inner air duct, the threaded holes are formed in the side surfaces of the supporting bracket and the moving bracket and correspond to each other, and the bolts are threadedly connected to the supporting bracket and the moving bracket through the threaded holes.

[0011] Preferably, the fixing device comprises a second lead screw, a torsion spring, a fixed disc, a fixed cylinder, a movable disc, a limiting disc, a first short rod, a second short rod and a second worm gear, the second lead screw is rotatably connected to the inner side surface of the inner air duct, and the fixed disc is fixedly connected to the side surface of the second lead screw.

[0012] Preferably, the torsion spring is sleeved on the side surface of the second lead screw, the upper end of the torsion spring is fixedly connected to the lower surface of the fixed disc, the lower end of the torsion spring is fixedly connected to the inner side surface of the inner air duct, the second worm gear is fixedly connected to the side surface of the second lead screw close to the upper end, the upper end of the fixed cylinder is fixedly connected to the lower surface of the inner air duct, and the fixed cylinder is slidably connected to the side surface of the second lead screw.

[0013] Preferably, the movable disc is threadedly connected to the side surface of the second lead screw, the inner side surface of the fixed cylinder at the lower end is fixedly connected with a first bolt, the first short rod is movably connected to the inner side surface of the fixed cylinder through the first bolt, the inner side surface of the first short rod at the lower end is fixedly connected with a second bolt, and the upper end of the second short rod is movably connected to the inner side surface of the first short rod through the second bolt.

[0014] Preferably, the inner side surface of the movable disc at the upper end is fixedly connected with a third bolt, the lower end of the second short rod is movably connected to the inner side surface of the movable disc through the third bolt, and the limiting disc is fixedly connected to the side surface of the second lead screw close to the second bolt.

[0015] An inner air duct construction method for shaft construction comprises the following steps:

[0016] S1, the bolts on the plurality of inner air ducts are removed, the supporting bracket is pulled outwards according to the size of the site space, the threaded holes on the limiting block and the supporting bracket are aligned, and then the bolts are installed in the threaded holes to limit the supporting bracket;

[0017] S2, install multiple inner air ducts, place the lower end of the inner air duct above another inner air duct and align through the limiting guard plate, at this time the lower end of the second lead screw will align and be placed in the limiting hole;

[0018] S3, rotate the handle to drive the rotating rod to rotate, at this time the other rotating rod is driven to rotate through the chain, the rotating rod drives the worm to rotate, the worm drives the second worm gear to rotate, and in turn drives the movable circular plate to move upward through the threads on the second lead screw, the movable circular plate moves upward while driving the first and second short rods to bend to be limited in the limiting hole;

[0019] S4, at the same time, the rotating rod drives the first lead screw to rotate through the worm and the first worm gear, the first lead screw drives the limiting block thereon to move outward to drive the moving bracket and the supporting bracket to move outward, and then the supporting bracket contacts the wall to fix the inner air duct, the second worm gear is provided with a notch, when the rotating rod rotates the second worm gear to the notch position, the rotating rod continues to rotate under the action of the torsional spring and the notch on the second worm gear, and the second worm gear does not continue to rotate;

[0020] S5, when disassembly is needed, reverse rotation of the handle can drive the supporting bracket to move reversely, and the second worm gear also reversely rotates under the action of the torsional spring for disassembly.

[0021] (Three) beneficial effects

[0022] The application provides an inner air duct installation structure for shaft construction and a construction method thereof.

[0023] 1. The first worm gear and the supporting bracket are arranged to move to contact the wall, so that the wall is fixed in a simple and convenient manner, and no hole is left on the shaft wall.

[0024] 2. The second lead screw is arranged to rotate to drive the movable circular plate to move upward, so as to drive the first and second short rods to fold and limit the inner air duct, thereby facilitating installation and disassembly.

[0025] 3. The second worm gear and the torsional spring are arranged in cooperation to stop the first and second short rods from continuing to rotate after limiting the inner air duct, so as to prevent over-limiting. DETAILED DESCRIPTION

[0026] Figure 1 It is a whole structure schematic view of the inner air duct installation structure for shaft construction and the construction method thereof.

[0027] Figure 2 It is an internal structure schematic view of the inner air duct installation structure for shaft construction and the construction method thereof.

[0028] Figure 3 For Figure 2 Enlarged view at A in the middle;

[0029] Figure 4 For the internal structure diagram of the limiting hole of the inner air pipe installation structure for shaft construction and the construction method thereof proposed by the application;

[0030] Figure 5 For the rotating rod structure diagram of the inner air pipe installation structure for shaft construction and the construction method thereof proposed by the application;

[0031] Figure 6 For the support device structure diagram of the inner air pipe installation structure for shaft construction and the construction method thereof proposed by the application;

[0032] Figure 7 For the fixed device structure diagram of the inner air pipe installation structure for shaft construction and the construction method thereof proposed by the application;

[0033] Figure 8 For Figure 7 Enlarged view at B in the middle;

[0034] Figure 9 For Figure 7 Enlarged view at C in the middle.

[0035] 1, inner air pipe; 2, limiting guard plate; 3, support device; 301, first lead screw; 302, first worm gear; 303, moving support; 304, limiting block; 305, support support; 306, threaded hole; 307, bolt; 4, fixed device; 401, second lead screw; 402, torsional spring; 403, fixed circular plate; 404, fixed cylinder; 405, movable circular plate; 406, limiting circular plate; 407, first short rod; 408, second short rod; 409, second worm gear; 5, limiting hole; 6, rotating rod; 7, handle; 8, chain; 9, worm. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0037] As Figures 1-9As shown, this embodiment of the invention provides an internal ventilation duct installation structure and construction method for vertical shaft construction, including an internal ventilation duct 1. A limit plate 2 is fixedly connected to the side surface of the upper end of the internal ventilation duct 1. A limit hole 5 is opened on the inner side surface of the internal ventilation duct 1 near the upper end. A support device 3 is provided on the inner side surface of the internal ventilation duct 1 near the middle position. A rotating rod 6 is provided on the inner side surface of the internal ventilation duct 1. Two worm gears 9 are respectively provided near the two ends of the rotating rod 6. A handle 7 is fixedly connected to the front end of the rotating rod 6. A chain 8 is rotatably connected between the two rotating rods 6. A fixing device 4 is provided on the inner side surface of the internal ventilation duct 1 near the worm gears 9. A sprocket is provided where the chain 8 contacts the rotating rod 6. The chain 8 and the rotating rod 6 are connected by the sprocket.

[0038] The support device 3 includes a first lead screw 301, a first worm gear 302, a movable bracket 303, a limiting block 304, a support bracket 305, a threaded hole 306, and a bolt 307. The first worm gear 302 is meshed with the worm 9 and is fixedly connected to the side surface of the first lead screw 301. The first lead screw 301 is rotatably connected to the inner surface of the inner air duct 1. The limiting block 304 is threadedly connected to the side surface of the first lead screw 301. Two limiting blocks 304 are provided. The movable bracket 303 is fixedly connected to the side surface of the limiting block 304 and slidably connected to the inner surface of the inner air duct 1. The support bracket 305 is movable. The moving bracket 303 is movably connected to the side surface of the movable bracket 303, and the support bracket 305 is slidably connected to the inner surface of the inner air duct 1. Threaded holes 306 are opened on the side surfaces of the support bracket 305 and the movable bracket 303, and the threaded holes 306 on the support bracket 305 and the movable bracket 303 correspond one-to-one. Bolts 307 are threadedly connected to the support bracket 305 and the movable bracket 303 through the threaded holes 306. Elastic rubber is provided on the support bracket 305 where it contacts the wall for easy support. The threads of the first lead screw 301 and the two limit blocks 304 are opposite in direction. The rotation of the first lead screw 301 drives the two limit blocks 304 to move in opposite directions.

[0039] The fixing device 4 includes a second lead screw 401, a torsion spring 402, a fixed circular plate 403, a fixed cylinder 404, a movable circular plate 405, a limiting circular plate 406, a first short rod 407, a second short rod 408, and a second worm gear 409. The second lead screw 401 is rotatably connected to the inner surface of the inner air duct 1. The fixed circular plate 403 is fixedly connected to the side surface of the second lead screw 401. The torsion spring 402 is sleeved on the side surface of the second lead screw 401. The upper end of the torsion spring 402 is fixedly connected to the lower surface of the fixed circular plate 403, and the lower end of the torsion spring 402 is fixedly connected to the inner surface of the inner air duct 1. The second worm gear 409 is fixedly connected to the side surface of the second lead screw 401 near the upper end. The upper end of the fixed cylinder 404 is fixedly connected to the lower surface of the inner air duct 1, and the fixed cylinder 404 is slidably connected to the side surface of the second lead screw 401. The movable circular plate 405 is threadedly connected to... On the side surface of the second lead screw 401, a first pin is fixedly connected to the inner surface of the lower end of the fixed cylinder 404. A first short rod 407 is movably connected to the inner surface of the fixed cylinder 404 through the first pin. A second pin is fixedly connected to the inner surface of the lower end of the first short rod 407. The upper end of the second short rod 408 is movably connected to the inner surface of the first short rod 407 through the second pin. A third pin is fixedly connected to the inner surface of the upper end of the movable circular plate 405. The lower end of the second short rod 408 is movably connected to the inner surface of the movable circular plate 405 through the third pin. A limiting circular plate 406 is fixedly connected to the side surface of the second lead screw 401 near the second pin. When the second worm gear 409 moves to the notch, it will contact the worm 9 through the torsion spring 402 but will not continue to rotate. The same applies when rotating to the notch on the other side. The torsion spring 402 generates torque in both cases.

[0040] A method for constructing internal ventilation ducts for vertical shaft construction includes the following steps:

[0041] S1. Remove the bolts 307 from the multiple internal air ducts 1 and pull the support bracket 305 outward according to the size of the site space. Align the limiting block 304 with the threaded hole 306 on the support bracket 305. Then, align the bolts 307 with the threaded hole 306 and install them to limit the support bracket 305.

[0042] S2. Install multiple internal air ducts 1, place the lower end of one of the internal air ducts 1 above another internal air duct 1 and align it with the limiting guard plate 2. At this time, the lower end of the second screw 401 will be aligned with the limiting hole 5 and placed in the limiting hole 5.

[0043] S3. Rotating handle 7 drives rotating rod 6 to rotate. At this time, the chain 8 drives another rotating rod 6 to rotate. Rotating rod 6 drives worm 9 to rotate. The rotation of worm 9 drives the second worm wheel 409 to rotate, which in turn drives the movable circular plate 405 to move upward through the thread on the second lead screw 401. While the movable circular plate 405 moves upward, it drives the first short rod 407 and the second short rod 408 to bend, thereby limiting the position in the limiting hole 5.

[0044] S4. Simultaneously, the rotation of the rotating rod 6 drives the first lead screw 301 to rotate through the worm 9 and the first worm wheel 302. The rotation of the first lead screw 301 drives the limiting block 304 on it to move outward, thereby driving the moving bracket 303 and the support bracket 305 to move outward. After that, the support bracket 305 contacts the wall, thereby fixing the inner air duct 1. The second worm wheel 409 is provided with a notch. When the rotating rod 6 rotates the second worm wheel 409 to the notch position, under the action of the torsion spring 402 and the notch on the second worm wheel 409, the rotating rod 6 will not drive the second worm wheel 409 to continue rotating even if it continues to rotate.

[0045] S5. When disassembly is required, rotating the handle 7 in the opposite direction will cause the support bracket 305 to move in the opposite direction. The second worm gear 409 will also rotate in the opposite direction under the action of the torsion spring 402 for disassembly.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An inner air duct installation structure for a shaft construction, comprising an inner air duct (1), characterized by: The side surface of the upper end of the inner air duct (1) is fixedly connected with a limiting baffle (2), the inner side surface of the inner air duct (1) near the upper end is provided with a limiting hole (5), the inner side surface of the inner air duct (1) near the middle position is provided with a supporting device (3), the inner side surface of the inner air duct (1) is provided with a rotating rod (6), the rotating rod (6) near both ends is provided with two worms (9), respectively, the front end of the rotating rod (6) is fixedly connected with a handle (7), the rotating rod (6) is provided with two, and the two rotating rods (6) are rotatably connected with a chain (8), and the inner side surface of the inner air duct (1) near the worm (9) is provided with a fixing device (4). The supporting device (3) comprises a first screw rod (301), a first worm wheel (302), a moving support (303), a limiting block (304), a supporting support (305), a threaded hole (306) and a bolt (307), the first worm wheel (302) is meshed with the worm (9), the first worm wheel (302) is fixedly connected with the side surface of the first screw rod (301), and the first screw rod (301) is rotatably connected with the inner side surface of the inner air duct (1). The fixing device (4) comprises a second screw rod (401), a torsional spring (402), a fixed circular plate (403), a fixed cylinder (404), a movable circular plate (405), a limiting circular plate (406), a first short rod (407), a second short rod (408) and a second worm wheel (409), the second screw rod (401) is rotatably connected with the inner side surface of the inner air duct (1), and the fixed circular plate (403) is fixedly connected with the side surface of the second screw rod (401).

2. The inner duct installation structure for a shaft construction according to claim 1, characterized by: The limiting block (304) is threadedly connected with the side surface of the first screw rod (301), the limiting block (304) is provided with two, the moving support (303) is fixedly connected with the side surface of the limiting block (304), the moving support (303) is slidably connected with the inner side surface of the inner air duct (1), and the supporting support (305) is movably connected with the side surface of the moving support (303).

3. The inner duct installation structure for a vertical shaft construction according to claim 1, characterized by: The supporting support (305) is slidably connected with the inner side surface of the inner air duct (1), the threaded hole (306) is formed in the side surfaces of the supporting support (305) and the moving support (303), and the threaded holes (306) on the supporting support (305) and the moving support (303) correspond one by one, and the bolt (307) is threadedly connected with the supporting support (305) and the moving support (303) through the threaded hole (306).

4. The inner duct installation structure for a shaft construction according to claim 1, characterized by: The torsional spring (402) is sleeved on the side surface of the second screw rod (401), the upper end of the torsional spring (402) is fixedly connected with the lower surface of the fixed circular plate (403), the lower end of the torsional spring (402) is fixedly connected with the inner side surface of the inner air duct (1), the second worm wheel (409) is fixedly connected with the side surface of the second screw rod (401) near the upper end, the upper end of the fixed cylinder (404) is fixedly connected with the lower surface of the inner air duct (1), and the fixed cylinder (404) is slidably connected with the side surface of the second screw rod (401).

5. The inner duct installation structure for a shaft construction according to claim 1, characterized by: The movable circular plate (405) is threadedly connected to the side surface of the second lead screw (401), the fixed cylinder (404) is fixedly connected to the inner side surface of the lower end with a first latch, the first short rod (407) is movably connected to the inner side surface of the fixed cylinder (404) through the first latch, the first short rod (407) is fixedly connected to the inner side surface of the lower end with a second latch, and the upper end of the second short rod (408) is movably connected to the inner side surface of the first short rod (407) through the second latch.

6. The inner duct installation structure for a shaft construction according to claim 1, characterized by: The movable circular plate (405) is fixedly connected to the inner side surface of the upper end with a third latch, the lower end of the second short rod (408) is movably connected to the inner side surface of the movable circular plate (405) through the third latch, and the limiting circular plate (406) is fixedly connected to the side surface of the second lead screw (401) close to the second latch.

7. A method of construction according to any one of claims 1 to 6 wherein: The method comprises the following steps: S1, remove the bolts (307) on the plurality of inner air ducts (1), and according to the size of the space on site, pull out the supporting bracket (305) to the appropriate position, and align the limiting block (304) and the threaded hole (306) on the supporting bracket (305), then install the bolt (307) on the threaded hole (306) to limit the supporting bracket (305); S2, install the plurality of inner air ducts (1), place the lower end of the inner air duct (1) above another inner air duct (1), and align them through the limiting guard plate (2), at this time the lower end of the second lead screw (401) will align the limiting hole (5) and be placed in the limiting hole (5); S3, rotate the handle (7) to drive the rotating rod (6) to rotate, at this time another rotating rod (6) is driven to rotate through the chain (8), the rotating rod (6) drives the worm (9) to rotate, the worm (9) drives the second worm gear (409) to rotate, and the movable circular plate (405) moves upward through the thread on the second lead screw (401), at the same time the movable circular plate (405) drives the first short rod (407) and the second short rod (408) to bend to limit in the limiting hole (5); S4, at the same time, the rotating rod (6) rotates to drive the first lead screw (301) to rotate through the worm (9) and the first worm gear (302), the first lead screw (301) rotates to drive the limiting block (304) on it to move outward, thereby driving the moving bracket (303) and the supporting bracket (305) to move outward, and then the supporting bracket (305) contacts the wall to fix the inner air duct (1), the second worm gear (409) is provided with a notch, when the rotating rod (6) rotates the second worm gear (409) to a certain position, the rotating rod (6) continues to rotate without driving the second worm gear (409) to continue to rotate under the action of the torsional spring (402) and the notch on the second worm gear (409); S5, when disassembly is needed, reverse rotation of the handle (7) can drive the supporting bracket (305) to move reversely, and the second worm gear (409) also rotates reversely under the action of the torsional spring (402) for disassembly.

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