Shaft mouth sealing structure

Abstract

The utility model relates to the technical field of shaft sealing, in particular to a shaft mouth sealing structure which comprises a well body, a plurality of sector plates capable of sealing a shaft mouth, a positioning mechanism and a reinforcing mechanism capable of improving the stability of the sector plates, the inner side wall of the well body is fixedly sleeved with a supporting ring, and arc-shaped supporting grooves are formed in the bottom ends of the outer arc faces of the sector plates. According to the utility model, the plurality of hooks are respectively hooked on the plurality of ring bodies, then the driving motor is started to drive the gear ring to rotate, and the gear ring drives the plurality of wire coils to synchronously wind the adjacent nooses through the gear, so that the plurality of nooses are straightened to hang the circular plate at the center of a wellhead, and then the hooks on the sector plate are hooked on the adjacent nooses; and then the sector plates are moved and spliced into a circular plate shape according to circumferential arrangement, the arc-shaped clamping grooves in the sector plates are clamped on the clamping rings, and the arc-shaped supporting grooves are clamped on the supporting rings, so that the multiple sector plates seal the wellhead, and a user can conveniently and rapidly install the sector plates and disassemble the sector plates.

Description

TECHNICAL FIELD

[0001] The utility model relates to vertical shaft closing technical field, concretely is a vertical shaft wellhead closing structure. BACKGROUND

[0002] The vertical shaft is an upright hole wall shaft pipeline, and the vertical shaft can be opened by using the carbon dioxide freezing well digging method. The diameter of the wellhead usually depends on the specific requirements of the project, the geological conditions and the construction technology. In order to meet the requirements of equipment access and operation of construction personnel, the diameter of the wellhead of the vertical shaft is generally large. When the wellhead of the vertical shaft needs to be temporarily closed, the anchor rod needs to be punched into the well wall on site, the bracket needs to be installed on the anchor rod, the closing disc steel beam needs to be installed on the bracket, and finally the wood board and sand need to be laid on the closing disc steel beam. The whole process is relatively complicated, the construction period is relatively long, and it is relatively inconvenient to remove. SUMMARY

[0003] The utility model aims at providing a vertical shaft wellhead closing structure to solve the problems in the background art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0005] A vertical shaft wellhead closing structure comprises:

[0006] The well body, the plurality of fan-shaped plates capable of closing the wellhead, the positioning mechanism and the reinforcing mechanism capable of improving the stability of the fan-shaped plates, the inner side wall of the well body is fixedly sleeved with a lug, the outer arc surface bottom end of each fan-shaped plate is provided with an arc-shaped lug groove, any arc-shaped lug groove is movably connected with the lug, the positioning mechanism is located at the center of the well body, the positioning mechanism comprises a circular plate, a vertical rod is fixedly connected to the center of the bottom surface of the circular plate, the inner arc surface of any fan-shaped plate is in abutment with the outer side wall of the vertical rod, and the reinforcing mechanism is rotatably connected to the top surface of the circular plate.

[0007] Further, the inner arc surface of any fan-shaped plate is provided with an arc-shaped clamping groove, the outer side wall of the vertical rod is fixedly sleeved with a clamping ring, and any arc-shaped clamping groove is movably connected with the clamping ring.

[0008] Further, the reinforcing mechanism comprises:

[0009] A plurality of wire reels capable of winding and unwinding corresponding ropes and a plurality of ropes capable of lifting adjacent sector plates, a plurality of wire reels correspond to a plurality of sector plates one by one, the bottom center of a plurality of wire reels is rotationally connected to the top surface of the circular plate, and a plurality of wire reels are arranged in a circumferential direction with the center of the circular plate as the center, a plurality of ropes correspond to a plurality of wire reels one by one, one end of a plurality of ropes is fixedly wound in the corresponding wire reel, and the other end is fixedly connected with a hook, a plurality of ring bodies are fixedly connected to the top surface of the well body, and a plurality of ring bodies correspond to a plurality of hooks one by one, any hook is movably hooked with an adjacent ring body, and the top surface of any sector plate is fixedly connected with a plurality of hooks, and any hook is movably hooked with an adjacent rope.

[0010] Further, the distance between the two opposite inner side walls of any wire reel is equal to the diameter of the cross section of the rope.

[0011] Further, the top center of any wire reel is fixedly connected with a gear, a tooth ring is arranged above the circular plate, and the tooth ring gear teeth are engaged with a plurality of gear teeth, the top center of the circular plate is rotationally connected with a rotating rod, and a plurality of supporting rods are fixedly connected between the rotating rod and the inner side wall of the tooth ring.

[0012] Further, the bottom surface of the vertical rod is fixedly connected with a motor box, and a driving motor is arranged in the motor box, and the motor shaft of the driving motor is fixedly connected with the bottom end of the rotating rod.

[0013] Further, a plurality of positioning rings are fixedly connected to the top surface of the circular plate, and a plurality of positioning rings correspond to a plurality of ropes one by one, a plurality of L-shaped guide holes are formed in the outer side wall of the circular plate, and a plurality of guide holes correspond to a plurality of ropes one by one, and the other end of any rope penetrates through the inside of the corresponding positioning ring and the inside of the guide hole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By hooking a plurality of hooks on a plurality of ring bodies in turn, starting the driving motor to drive the tooth ring to rotate, and making the tooth ring drive a plurality of gears and adjacent wire reels to rotate synchronously, a plurality of wire reels are used to wind adjacent ropes synchronously, a plurality of ropes are used to straighten the circular plate and hang it at the center of the well mouth, then the hooks on the sector plate are hooked on the adjacent ropes, then the sector plate is moved and arranged in a circumferential direction to be spliced into a circular plate shape, and the arc-shaped clamping groove on the sector plate is clamped on the clamping ring and the arc-shaped supporting groove is clamped on the supporting ring, so that the plurality of sector plates can close the well mouth, thereby facilitating the use personnel to quickly install the sector plate and facilitating disassembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the position relationship of the positioning mechanism and the reinforcing mechanism in the utility model;

[0018] Figure 3 This is a schematic diagram of the sector-shaped plate structure in this utility model;

[0019] Figure 4 This is a schematic diagram of the reinforcement mechanism in this utility model.

[0020] In the diagram: 100, well body; 110, ring body; 120, support ring; 200, sector plate; 201, arc-shaped support groove; 202, arc-shaped retaining groove; 210, hook; 300, positioning mechanism; 310, circular plate; 320, upright; 321, retaining ring; 400, reinforcing mechanism; 410, coil; 411, gear; 420, winch; 421, hook; 430, motor box; 440, gear ring; 450, positioning ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 In this embodiment of the utility model, a shaft wellhead sealing structure includes:

[0023] The well body 100, multiple sector plates 200 capable of sealing the well opening, positioning mechanism 300, and reinforcement mechanism 400 capable of improving the stability of sector plates 200 are included. A support ring 120 is fixedly sleeved on the inner side wall of the well body 100. Each sector plate 200 has an arc-shaped support groove 201 at the bottom of its outer arc surface. Any arc-shaped support groove 201 is movably engaged with the support ring 120. The positioning mechanism 300 is located at the center of the well body 100. The positioning mechanism 300 includes a circular plate 310, and a vertical rod 320 is fixedly connected to the center of the bottom surface of the circular plate 310. The inner arc surface of any sector plate 200 is in contact with the outer side wall of the vertical rod 320. The reinforcement mechanism 400 is rotatably connected to the top surface of the circular plate 310.

[0024] Specifically, when multiple sector plates 200 are arranged circumferentially, and two adjacent sector plates 200 are close together, the multiple sector plates 200 can be spliced ​​into a circular plate structure, so that the multiple sector plates 200 cover the well opening of the well body 100. The sector plates 200 can be made of wood. Users can manually make holes and grooves on the sector plates 200 as needed using saws or other tools. When it is necessary to assemble multiple sector plates 200 into a circular plate structure to cover the well opening, users can place the arc-shaped brackets 201 on the multiple sector plates 200 on the bracket rings 120 inside the well body 100, so that the outer arc surfaces of the multiple sector plates 200 are all supported by the bracket rings 120. The uprights 320 are placed in advance at the center of the multiple sector plates 200, so that the inner arc surfaces of the multiple sector plates 200 are all close to the uprights 320, thereby fixing the multiple sector plates 200 at the well opening, making it convenient for users to close the well opening and easy to disassemble and assemble.

[0025] Example 1

[0026] like Figures 2-3 As shown, in this embodiment, an arc-shaped slot 202 is provided on the inner arc surface of any sector plate 200, and a retaining ring 321 is fixedly sleeved on the outer wall of the upright 320. Any arc-shaped slot 202 is movably engaged with the retaining ring 321.

[0027] In this embodiment, when multiple sector plates 200 are assembled into a circular plate structure to cover the well opening, the outer arc surface of the multiple sector plates 200 can be supported by the support ring 120. Then, the arc-shaped groove 202 of the inner arc surface of the sector plate 200 can be inserted into the retaining ring 321, and the inner arc surface of the sector plate 200 can be pressed against the upright 320. Thus, the upright 320 and the retaining ring 321 support the inner arc surface of the sector plate 200, thereby improving the stability of the sector plate 200.

[0028] like Figures 3-4 As shown, in this embodiment, the reinforcement mechanism 400 includes:

[0029] Multiple coils 410 capable of winding and unwinding corresponding helical cables 420 and multiple helical cables 420 capable of suspending adjacent sector plates 200 are provided. Each coil 410 corresponds one-to-one with a sector plate 200. The center of the bottom surface of each coil 410 is rotatably connected to the top surface of the circular plate 310, and the coils 410 are arranged circumferentially around the center of the circular plate 310. Each helical cable 420 corresponds one-to-one with a coil 410. One end of each helical cable 420 is fixedly wound inside the corresponding coil 410, and the other end is fixedly connected to a hook 421. Multiple rings 110 are fixedly connected to the top surface of the well body 100, and each ring 110 corresponds one-to-one with a hook 421. Each hook 421 is movable with an adjacent ring 110. The top surface of any sector plate 200 is fixedly connected with multiple hooks 210, and each hook 210 is movably hooked with the adjacent cable 420. The distance between the two opposite inner sidewalls of any coil 410 is equal to the cross-sectional diameter of the cable 420. A gear 411 is fixedly connected to the center of the top surface of any coil 410. A toothed ring 440 is provided above the circular plate 310, and the teeth of the toothed ring 440 mesh with the teeth of multiple gears 411. A rotating rod is rotatably connected to the center of the top surface of the circular plate 310, and multiple support rods are fixedly connected between the rotating rod and the inner sidewall of the toothed ring 440. A motor box 430 is fixedly connected to the bottom surface of the upright 320, and a drive motor is provided inside the motor box 430. The motor shaft of the drive motor is fixedly connected to the bottom end of the rotating rod.

[0030] In specific implementation, when multiple fan-shaped plates 200 are assembled into a circular plate structure to cover the well opening, the user can start the drive motor to rotate the gear ring 440, causing the gear ring 440 to drive multiple gears 411 and adjacent reels 410 to rotate synchronously. This allows multiple reels 410 to simultaneously release or reel in adjacent cables 420. First, the cables 420 are released, then the hooks 421 on the cables 420 are hooked onto the ring 110 on the well body 100, and then the cables 420 are synchronously reeled in using the adjacent reels 410. This tautens the cables 420, allowing the circular plate 310 to be suspended at the center of the well opening by the cables 420. To facilitate the positioning of the circular plate 310, the hook 210 on the sector plate 200 is hooked onto the cable 420, and the sector plate 200 is held and fixed by the retaining ring 321 and the supporting ring 120. This allows the top surface of the sector plate 200 to be lifted by the taut cable 420 through the hook 210, improving the load-bearing capacity and stability of the sector plate 200. This makes it easier for users to position the circular plate 310. The drive motor is equipped with an electromagnetic brake. When the drive motor is not started, the motor shaft will not rotate. When the cable 420 is wound inside the reel 410, the cable 420 will maintain a snail-like winding, making it less likely for the cable 420 to get tangled when the reel 410 releases or rewinds the cable 420.

[0031] Example 2

[0032] Based on Embodiment 1, the winch 420 can be limited by setting a positioning ring 450 and a guide hole.

[0033] like Figure 4 As shown, in this embodiment, a plurality of positioning rings 450 are fixedly connected to the top surface of the circular plate 310, and the plurality of positioning rings 450 correspond one-to-one with a plurality of strands 420. A plurality of L-shaped guide holes are opened on the outer side wall of the circular plate 310, and the plurality of guide holes correspond one-to-one with a plurality of strands 420. The other end of any strand 420 passes through the interior of the corresponding positioning ring 450 and the interior of the guide hole.

[0034] In practice, by passing the cable 420 through the positioning ring 450 and the L-shaped guide hole, the cable 420 can be limited by the guide hole and the positioning ring 450, so that the cable 420 can be released or wound more synchronously.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A shaft wellhead sealing structure, characterized in that, include: The well body (100) has a support ring (120) fixedly sleeved on its inner side wall. Multiple sector plates (200) have arc-shaped grooves (201) at the bottom of their outer arc surfaces, and any arc-shaped groove (201) is movably engaged with the support ring (120); The positioning mechanism (300) is located at the center of the well body (100). The positioning mechanism (300) includes a circular plate (310), and a vertical rod (320) is fixedly connected to the center of the bottom surface of the circular plate (310). The inner arc surface of any sector plate (200) is in contact with the outer wall of the vertical rod (320). The reinforcing mechanism (400) is rotatably connected to the top surface of the circular plate (310).

2. The shaft wellhead sealing structure according to claim 1, characterized in that, An arc-shaped slot (202) is provided on the inner arc surface of any sector plate (200), and a retaining ring (321) is fixedly sleeved on the outer wall of the upright (320). Any arc-shaped slot (202) is movably engaged with the retaining ring (321).

3. The shaft wellhead sealing structure according to claim 1, characterized in that, The reinforcement mechanism (400) includes: Multiple coils (410) correspond one-to-one with multiple fan-shaped plates (200). The center of the bottom surface of each coil (410) is rotatably connected to the top surface of the circular plate (310), and the multiple coils (410) are arranged in a circle with the center of the circular plate (310) as the center. Multiple strands (420) correspond one-to-one with multiple coils (410). One end of each strand (420) is fixedly wound inside the corresponding coil (410), and the other end is fixedly connected to a hook (421). Multiple rings (110) are fixedly connected to the top surface of the well body (100), and multiple rings (110) correspond one-to-one with multiple hooks (421). Any hook (421) is movably hooked to the adjacent ring (110). Multiple hooks (210) are fixedly connected to the top surface of any fan-shaped plate (200), and any hook (210) is movably hooked to the adjacent strand (420).

4. The shaft wellhead sealing structure according to claim 3, characterized in that, A gear (411) is fixedly connected to the center of the top surface of any coil (410). A toothed ring (440) is provided above the circular plate (310), and the teeth of the toothed ring (440) mesh with the teeth of multiple gears (411). A rotating rod is rotatably connected to the center of the top surface of the circular plate (310), and multiple support rods are fixedly connected between the rotating rod and the inner side wall of the toothed ring (440).

5. The shaft wellhead sealing structure according to claim 4, characterized in that, The bottom surface of the upright (320) is fixedly connected to a motor box (430), and a drive motor is installed inside the motor box (430). The motor shaft of the drive motor is fixedly connected to the bottom end of the rotating rod.

6. The shaft wellhead sealing structure according to claim 4, characterized in that, The top surface of the circular plate (310) is fixedly connected with multiple positioning rings (450), and the multiple positioning rings (450) correspond one-to-one with multiple strands (420). The outer wall of the circular plate (310) is provided with multiple L-shaped guide holes, and the multiple guide holes correspond one-to-one with multiple strands (420). The other end of any strand (420) passes through the interior of the corresponding positioning ring (450) and the interior of the guide hole.

7. The shaft wellhead sealing structure according to claim 3, characterized in that, The distance between the two opposite inner walls of any coil (410) is equal to the cross-sectional diameter of the strand (420).

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