A quick retraction and extension device for mine method tunnel fans

Abstract

The utility model relates to a tunnel ventilation device field discloses a kind of quick retraction device for mine method tunnel air duct, including base, the upper surface of base is provided with adjusting assembly, the top of adjusting assembly is provided with support ring, the upper surface of base is placed with air duct body, the outer wall of support ring is provided with positioning mechanism;Positioning mechanism includes locating assembly, locating assembly includes moving ring, moving ring is slidably connected in the outer wall of support ring, the front surface of moving ring is fixedly connected with hinged seat one.The utility model in the positioning mechanism, four groups of baffle that present circumferential array in positioning mechanism can be positioned from four points to air duct, moving ring moves up and down through connecting rod transmission and makes baffle overturning realize limiting and cancel, limiting assembly ensures that locating assembly position is stable, realizes the stable limiting of air duct, can effectively prevent air duct from self-weight or external force factor scattering, facilitate subsequent use and move.

Description

Technical Field

[0001] This utility model relates to the field of tunnel ventilation devices, and in particular to a quick-release and retraction device for ventilation ducts in mining tunnels. Background Technology

[0002] During the construction of tunnels using the mining method, ventilation ducts, as a key component of the ventilation system, not only enable ventilation but also remove harmful gases (such as dust and carbon monoxide), ensuring air quality and personnel safety in the construction environment.

[0003] Common ventilation ducts are usually flexible pipes with metal rings at intervals for support. They are typically stored by folding.

[0004] Traditionally, after being folded and stored, air ducts are usually stacked directly in the open air without fixed support. This can cause the folded air ducts to easily scatter due to their own weight or external vibrations. The scattered and disordered air ducts will affect the subsequent unfolding and use. Furthermore, air ducts without fixed support are prone to scattering when they need to be moved later, which will affect the movement.

[0005] To address this issue, a quick-release and retraction device for ventilation ducts in mining tunnels is proposed. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a quick-release device for ventilation ducts in mining tunnels, which aims to improve the problem that in the prior art, ventilation ducts are easily scattered under the influence of gravity and external forces after being folded and stacked, thus affecting the efficiency when unfolding and moving them.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a quick-release device for ventilation ducts in mining tunnels, comprising a base, an adjustment component provided on the upper surface of the base, a support ring provided at the top of the adjustment component, a ventilation duct body placed on the upper surface of the base, and a positioning mechanism provided on the outer wall of the support ring. The positioning mechanism includes a positioning component, which includes a movable ring slidably connected to the outer wall of a support ring. A hinge seat one is fixedly connected to the front surface of the movable ring. One end of a connecting rod is hinged to the inner surface of the hinge seat one. The other end of the connecting rod is hinged to a hinge seat two. A fixing block is fixedly connected to the rear surface of the hinge seat two. A stop block is hinged to the top of the inner surface of the support ring.

[0008] As a further description of the above technical solution: The positioning mechanism further includes a limiting component, which includes a pull ring. A rod is fixedly connected to the rear surface of the pull ring. The rod passes through and is slidably connected to the inner surface of the moving ring. A slider is elastically connected to the inner wall of the front side of the moving ring via a connecting spring. A slot is provided on the front surface of the support ring.

[0009] As a further description of the above technical solution: The adjustment assembly includes a sleeve, which is fixedly connected to the upper surface of the base. A slide cylinder is slidably connected through the upper surface of the sleeve. A sleeve rod is fixedly connected to the upper surface of the base. A slide bar is slidably connected through the upper surface of the sleeve rod. A locking block is elastically connected to the inner wall of the rear side of the slide bar by a compression spring. A locking groove is formed through the front surface of the sleeve rod.

[0010] As a further description of the above technical solution: The fixing block is fixedly connected to the front surface of the stop block, and the stop block is L-shaped.

[0011] As a further description of the above technical solution: The hinge seat 1, connecting rod, hinge seat 2, fixing block, and stop block are all provided in four sets, and the four sets of hinge seat 1, connecting rod, hinge seat 2, fixing block, and stop block are arranged in a circular array with the center of the support ring as the origin.

[0012] As a further description of the above technical solution: The rear end of the insertion rod is arc-shaped, and the rear end of the insertion rod is inserted into the inner wall of the slot.

[0013] As a further description of the above technical solution: The slider is slidably connected to the inner wall of the moving ring, and the insertion rod passes through and is fixedly connected to the inner surface of the moving ring.

[0014] As a further description of the above technical solution: The upper surfaces of the slide cylinder and slide rod are fixedly connected to the lower surface of the support ring. The locking block is slidably connected to the front surface of the slide rod and inserted into the inner wall of the slot. The front end of the locking block is hemispherical.

[0015] This utility model has the following beneficial effects: 1. In this utility model, the four sets of stops arranged in a circular array in the positioning mechanism can limit the air duct from four points. The moving ring moves up and down and the stops are flipped through the connecting rod to realize the limiting and release. The limiting component ensures the stability of the positioning component and realizes the stable limiting of the air duct. It can effectively prevent the air duct from being scattered due to its own weight or external force, and facilitate subsequent use and movement.

[0016] 2. In this utility model, by adjusting the components, the height of the support ring can be adjusted according to the length of the folded air duct, adapting to air ducts of different specifications. Moreover, during adjustment, it is only necessary to move the support ring against the locking block, making the operation simple and improving the applicability of the device. Attached Figure Description

[0017] Figure 1 This is a front view of the three-dimensional structure of the overall device in this utility model; Figure 2 This is a three-dimensional structural breakdown diagram of the overall device in this utility model; Figure 3 This is a three-dimensional cross-sectional view of the support ring and the movable ring in this utility model; Figure 4 This is a three-dimensional cross-sectional view of the sleeve and slide rod in this utility model.

[0018] Legend: 1. Base; 2. Adjustment component; 21. Sleeve; 22. Slide cylinder; 23. Sleeve rod; 24. Slide rod; 25. Locking block; 26. Compression spring; 27. Locking groove; 3. Air duct body; 4. Support ring; 5. Positioning component; 51. Moving ring; 52. Hinge seat one; 53. Connecting rod; 54. Hinge seat two; 55. Fixing block; 56. Stop block; 6. Limiting component; 61. Pull ring; 62. Insert rod; 63. Connecting spring; 64. Slider; 65. Slot. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1 - Figure 2 This utility model provides an embodiment of a quick-release device for a ventilation duct in a mining tunnel, comprising a base 1 for supporting the device and the ventilation duct body 3. The upper surface of the base 1 is provided with an adjustment component 2 for adjusting the height of the device according to the length of the folded ventilation duct body 3. The top of the adjustment component 2 is provided with a support ring 4 for supporting the positioning mechanism. The ventilation duct body 3 is placed on the upper surface of the base 1. The ventilation duct body 3 is a ventilation duct for a mining tunnel, i.e., a tunnel ventilation duct, which is a flexible pipe used for ventilation during tunnel construction. Metal rings are provided at intervals to provide support. The outer wall of the support ring 4 is provided with a positioning mechanism for multi-point positioning of the ventilation duct body 3, which can ensure the stability of the ventilation duct body 3 in its stored state.

[0021] Reference Figure 1 - Figure 3 The positioning mechanism includes a positioning component 5, which includes a moving ring 51. The moving ring 51 is slidably connected to the outer wall of the support ring 4. The moving ring 51 moves up and down. A hinge seat 1 52 for connecting a connecting rod 53 is fixedly connected to the front surface of the moving ring 51. One end of the connecting rod 53 is hinged to the inner surface of the hinge seat 1 52. The other end of the connecting rod 53 is hinged to a hinge seat 2 54 for connecting the connecting rod 53. Under the transmission of the connecting rod 53, when the hinge seat 1 52 moves up and down with the moving ring 51, the connecting rod 53 will pull the hinge seat 2 54. A fixing block 55 is fixedly connected to the rear surface of the hinge seat 2 54. The hinge seat 2 54 and the fixing block 55 will move synchronously. A stop block 56 is hinged to the top of the inner surface of the support ring 4.

[0022] Reference Figure 1 - Figure 3 The fixing block 55 is fixedly connected to the front surface of the stop block 56. When the fixing block 55 is pulled by the connecting rod 53, the stop block 56 will rotate around the hinge point between it and the support ring 4 to realize the limiting and releasing of the air duct body 3. The stop block 56 is set in an L shape. There are four sets of hinge seat 1 52, connecting rod 53, hinge seat 2 54, fixing block 55 and stop block 56. The four sets of hinge seat 1 52, connecting rod 53, hinge seat 2 54, fixing block 55 and stop block 56 are arranged in a circular array with the center of the support ring 4 as the origin. The four sets of stop blocks 56 can limit the air duct body 3 from four points.

[0023] Reference Figure 1 - Figure 3 The positioning mechanism also includes a limiting component 6 to ensure the stable position of the positioning component 5. The limiting component 6 includes a pull ring 61, which is easy to pull. A rod 62 is fixedly connected to the rear surface of the pull ring 61. The pull ring 61 and the rod 62 move synchronously. The rod 62 passes through and is slidably connected to the inner surface of the moving ring 51. The rod 62 moves in the front and back direction. A slider 64 is elastically connected to the inner wall of the front side of the moving ring 51 through a connecting spring 63. A slot 65 is opened on the front surface of the support ring 4. The rod 62 and the slot 65 fit together. There are multiple sets of slots 65, which are longitudinally distributed and correspond to the positions of the rod 62 when the stop 56 is open and when it is in the limiting state.

[0024] Reference Figure 1 - Figure 3 The rear end of the insertion rod 62 is set to be arc-shaped. The rear end of the insertion rod 62 is inserted into the inner wall of the slot 65. The arc shape facilitates the insertion and positioning of the insertion rod 62 and the slot 65. When inserted, the moving ring 51 can be limited. The slider 64 is slidably connected to the inner wall of the moving ring 51. The slider 64 slides in the front and back direction. When the slider 64 moves forward, it will squeeze the connecting spring 63 to generate a reaction force. The insertion rod 62 passes through and is fixedly connected to the inner surface of the moving ring 51.

[0025] Reference Figure 1 , Figure 2 , Figure 4 The adjusting component 2 includes a sleeve 21, which is fixedly connected to the upper surface of the base 1. A slide cylinder 22 is slidably connected through the upper surface of the sleeve 21. There are three sets of sleeves 21 and slide cylinders 22, which are distributed at the left, rear, and right ends of the upper surface of the base 1. A sleeve rod 23 is fixedly connected to the upper surface of the base 1. A slide rod 24 is slidably connected through the upper surface of the sleeve rod 23. The sleeve rod 23 and slide rod 24 are located at the front end of the upper surface of the base 1. A locking block 25 is elastically connected to the inner wall of the rear side of the slide rod 24 through a compression spring 26. A locking groove 27 is opened through the front surface of the sleeve rod 23. The locking block 25 and the locking groove 27 fit together. There are multiple sets of locking grooves 27, which are distributed longitudinally at equal intervals.

[0026] Reference Figure 1 , Figure 2 , Figure 4 The upper surfaces of the slide cylinder 22 and the slide rod 24 are fixedly connected to the lower surface of the support ring 4. The locking block 25 passes through and is slidably connected to the front surface of the slide rod 24. The locking block 25 moves in the front and back direction. When the locking block 25 moves backward, it will squeeze and compress the spring 26 to generate a reaction force. The locking block 25 is inserted into the inner wall of the slot 27. The front end of the locking block 25 is set as a hemisphere. The initial position of the hemisphere does not contact the slot 27. Pushing the locking block 25 backward will make the hemisphere contact the slot 27.

[0027] Working principle: The support ring 4 is adjusted to a suitable height by the adjustment component 2. After the air duct body 3 is folded, it is placed on the base 1. The stop block 56 is in a closed state, which limits the air duct body 3 from four directions to ensure its stable fixation.

[0028] Before placement, adjust the height of the support ring 4 according to the length of the air duct body 3. When adjusting, use your toes to hold the locking block 25 so that the hemispherical position of the locking block 25 can contact the locking groove 27. When the support ring 4 is raised or lowered, the locking groove 27 can press the locking block 25 to disengage it from the locking groove 27. When the locking block 25 moves, it will squeeze the compression spring 26 to generate a reaction force. When the device height is adjusted properly, slowly raise or lower the support ring 4 until the locking block 25 and the nearest locking groove 27 are aligned and inserted under the force of the compression spring 26, thus limiting the position of the support ring 4.

[0029] Then pull the pull ring 61, causing the insertion rod 62 to disengage from the slot 65 on the support ring 4. After the moving ring 51 loses its limit, it moves downward. Through the transmission of the first hinge seat 52, the connecting rod 53 and the second hinge seat 54, it pulls the fixing block 55 and the stop block 56 to flip outward, releasing the limit on the air duct body 3. Then, the folded air duct body 3 is placed. After the air duct body 3 is placed, the limit on the moving ring 51 is released in the same way, and the moving ring 51 is moved upward. Through the transmission of the first hinge seat 52, the connecting rod 53 and the second hinge seat 54, it pulls the fixing block 55 and the stop block 56 to rotate inward, limiting the air duct body 3 and ensuring stability.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-release device for ventilation ducts in mining tunnels, comprising a base (1), characterized in that: An adjustment component (2) is provided on the upper surface of the base (1), a support ring (4) is provided at the top of the adjustment component (2), a wind duct body (3) is placed on the upper surface of the base (1), and a positioning mechanism is provided on the outer wall of the support ring (4). The positioning mechanism includes a positioning component (5), which includes a moving ring (51). The moving ring (51) is slidably connected to the outer wall of the support ring (4). A hinge seat one (52) is fixedly connected to the front surface of the moving ring (51). One end of a connecting rod (53) is hinged to the inner surface of the hinge seat one (52). The other end of the connecting rod (53) is hinged to a hinge seat two (54). A fixing block (55) is fixedly connected to the rear surface of the hinge seat two (54). A stop block (56) is hinged to the top of the inner surface of the support ring (4).

2. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 1, characterized in that: The positioning mechanism also includes a limiting component (6), which includes a pull ring (61). A rod (62) is fixedly connected to the rear surface of the pull ring (61). The rod (62) passes through and is slidably connected to the inner surface of the moving ring (51). A slider (64) is elastically connected to the inner wall of the front side of the moving ring (51) through a connecting spring (63). A slot (65) is provided on the front surface of the support ring (4).

3. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 1, characterized in that: The adjustment component (2) includes a sleeve (21), which is fixedly connected to the upper surface of the base (1). A slide cylinder (22) is slidably connected through the upper surface of the sleeve (21). A sleeve rod (23) is fixedly connected to the upper surface of the base (1). A slide rod (24) is slidably connected through the upper surface of the sleeve rod (23). A locking block (25) is elastically connected to the inner wall of the rear side of the slide rod (24) by a compression spring (26). A locking groove (27) is opened through the front surface of the sleeve rod (23).

4. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 1, characterized in that: The fixing block (55) is fixedly connected to the front surface of the stop block (56), and the stop block (56) is L-shaped.

5. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 1, characterized in that: The hinge seat one (52), connecting rod (53), hinge seat two (54), fixing block (55), and stop block (56) are all provided in four sets. The four sets of hinge seat one (52), connecting rod (53), hinge seat two (54), fixing block (55), and stop block (56) are arranged in a circular array with the center of the support ring (4) as the origin.

6. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 2, characterized in that: The rear end of the insertion rod (62) is arc-shaped, and the rear end of the insertion rod (62) is inserted into the inner wall of the slot (65).

7. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 2, characterized in that: The slider (64) is slidably connected to the inner wall of the moving ring (51), and the insert (62) passes through and is fixedly connected to the inner surface of the moving ring (51).

8. A quick-release and retraction device for ventilation ducts in mining tunnels according to claim 3, characterized in that: The upper surfaces of the slide cylinder (22) and slide rod (24) are fixedly connected to the lower surface of the support ring (4). The locking block (25) passes through and is slidably connected to the front surface of the slide rod (24). The locking block (25) is inserted into the inner wall of the slot (27). The front end of the locking block (25) is set as a hemispherical shape.

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