Air duct extension traction device

Abstract

The utility model discloses an air duct extension traction device, which comprises a plurality of side supporting rods, a plurality of side supporting rods, a plurality of side supporting rods, a plurality of side supporting rods, a plurality of side supporting rods and a plurality of side supporting rods, the free ends of the side supporting rods extend into the inner cavity of the reconsolidation ring, and the reconsolidation ring is fixedly connected with the side supporting rods; further, the plurality of side supporting rods are mutually gathered and fixed to form a cylindrical supporting frame; the supporting frame is used for being arranged on the periphery of the supporting frame in a sleeving mode, and then the multiple compressed mining negative pressure air ducts are supported. The limiting mechanism is arranged on the periphery of the supporting frame and used for clamping the mining negative-pressure air duct and preventing the mining negative-pressure air duct arranged on the supporting frame in a sleeving mode from being separated from the supporting frame; according to the utility model, the time for lengthening the air duct can be shortened, the construction procedure of repeatedly connecting the air duct in a short time is avoided, the air duct extension traction device is directly adopted to carry a plurality of compressed mine negative pressure air ducts, and the air duct extension traction device can be automatically unfolded as required, so that the construction efficiency is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of underground engineering excavation construction, in particular to a wind tube extension and traction device. Background Art

[0002] The fresh air supply of the excavation working face generally adopts the forced ventilation. Under normal circumstances, the national regulations require that the distance between the outlet of the forced air duct and the working face shall not exceed 10m. The requirement that the underground air supply duct is always kept within 10m is to ensure the effectiveness and safety of air supply. Keeping the length of the air supply duct within 10m can reduce air flow resistance and energy loss, ensure sufficient coverage of air supply, improve ventilation effect, and reduce equipment failure and maintenance costs.

[0003] The existing construction problems are:

[0004] First, the existing method of extending the wind tube is to stop excavating after the working face has advanced 8-10m in order to extend the wind tube, but stopping excavation will affect production efficiency;

[0005] Second, since the length of the wind tube currently used is generally 10m, and to connect a 10m long wind tube, the distance must be greater than 10 meters to operate, then at this time the distance between the working surface and the wind tube outlet is greater than 10m, which does not meet the requirements of the regulations. Therefore, the existing technology does not meet the requirements of the regulations when connecting the wind tube;

[0006] Third, since the existing wind duct length is basically 10m, and the length of a tunnel can even be several thousand meters, there will be hundreds of wind duct joints in the tunnel, which will increase wind resistance, reduce wind pressure or cause air leakage. Summary of the invention

[0007] The utility model aims to provide a wind duct extension and traction device to solve the problems in the prior art of the construction process of extending the wind duct, which leads to low construction efficiency, affects ventilation efficiency and does not comply with safety regulations.

[0008] The utility model adopts the following technical scheme: a wind tube extension traction device, comprising:

[0009] Multiple side support rods are arranged along the tunnel and in a ring shape, with two ends of the side support rods being a fixed end and a free end respectively;

[0010] The reinforcing ring is used to be fixedly connected with the free ends of each side support rod; thereby the multiple side support rods are gathered and fixed to each other to form a cylindrical support frame; the support frame is used for multiple compressed mining negative pressure air ducts to be sleeved on its periphery, thereby supporting the multiple compressed mining negative pressure air ducts;

[0011] The limiting mechanism is arranged on the periphery of the support frame and is used to hold the mine negative pressure air duct and prevent the mine negative pressure air duct sleeved on the support frame from detaching from the support frame.

[0012] Further, there are two fixing rings, and their axes coincide with the axis of the support frame.

[0013] Further, the limiting mechanism includes:

[0014] The support rod, the proximal end of the support rod is hinged to the fixing ring, and its distal end extends in a direction away from the support frame. A first elastic member is fixedly connected to the distal end of the support rod. The first elastic member is used to push the distal end of the support rod away from the fixing ring, so that the distal end of the support rod extends into the mine negative pressure air duct and prevents the mine negative pressure air duct sleeved on the support frame from detaching from the support frame.

[0015] Further, the limiting mechanism further includes: a clamping plate arranged along the direction of the side support rod. The clamping plate is fixedly connected to the outer sides of the two fixing rings; the proximal end of the support rod is hinged to the outer side of the clamping plate. The first elastic member is located between the clamping plate and the distal end of the support rod. One end of the first elastic member is fixedly connected to the distal end of the support rod, and the other end is fixedly connected to the outer side of the clamping plate.

[0016] Further, the limiting mechanism includes:

[0017] The blocking elastic piece is located on the periphery of the support frame. Its proximal end is fixedly connected to the fixing ring, and its distal end extends in a direction away from the support frame;

[0018] The pulling elastic piece, its distal end is hinged to the distal end of the blocking elastic piece, and its proximal end is arranged close to the side support rod;

[0019] The sliding ring is sleeved on the side support rod, and its side surface is hinged to the proximal end of the pulling elastic piece; when the mine negative pressure air duct on the left needs to be unfolded or a compressed mine negative pressure air duct needs to be sleeved on the support frame, the sliding ring slides to the right, so that the distal ends of the blocking elastic piece and the pulling elastic piece approach the side support rod, facilitating the unfolding of the mine negative pressure air duct or the sleeving of the compressed mine negative pressure air duct; it is also used when it is necessary to hold the compressed mine negative pressure air duct. The sliding ring slides to the left, so that the distal ends of the blocking elastic piece and the pulling elastic piece move away from the side support rod, thereby holding the mine negative pressure air duct.

[0020] Further, the limiting mechanism further includes:

[0021] The limiting ring is fixed on the side support rod and on the left side of the sliding ring, and is used to limit the sliding ring, so that the distal ends of the blocking elastic piece and the pulling elastic piece move away from the side support rod and hold the mine negative pressure air duct.

[0022] Further, the air duct extension and traction device further includes: a cooperation mechanism, which is fixedly connected to the fixed ends of multiple side support rods and is used to drive the air duct extension and traction device to turn or move along the roadway direction along with the movement of the roadheader.

[0023] Further, the fixed ends of the multiple side support rods are fixed inside the air flow diverter, on the roadheader, or on the advanced support of the tunneling face.

[0024] Further, the cooperation mechanism includes:

[0025] A vertical rod support, which is fixedly connected to the fixed ends of multiple side support rods respectively; a sliding sleeve is fixedly connected to its lower end, the sliding sleeve is sleeved on a sliding rod, and both ends of the sliding rod are respectively fixed between a first vertical plate and a second vertical plate, and the first vertical plate and the second vertical plate are fixed to the bottom of the air flow diverter, on the roadheader, or on the advanced support of the tunneling face; a second elastic member is sleeved on the sliding rod, and both ends of the second elastic member respectively abut between the sliding sleeve and the first vertical plate, and are used for the sliding sleeve to move left and right along the sliding rod when the roadheader encounters unevenness when advancing towards the working face, thereby compressing the second elastic member and reducing the movement amplitude of the mine negative pressure air duct.

[0026] Further, the cooperation mechanism includes:

[0027] A vertical rod support, which is fixedly connected to the fixed ends of multiple side support rods respectively; a sliding support plate is connected to its lower end, a pair of rollers are fixedly connected to the front and rear sides of the sliding support plate, a sliding rod is fixedly connected to the right side of the sliding support plate, a second elastic member is sleeved on the sliding rod, the right end of the sliding rod is used to extend into a sliding hole opened on the first vertical plate and extend out of the sliding hole when the roller slides to the right, both ends of the second elastic member respectively abut between the sliding support plate and the first vertical plate, and a plurality of guide rods are also fixedly connected between the first vertical plate and the second vertical plate, and each guide rod is used to guide the roller and is used for the roller to move left and right along the guide rod when the roadheader encounters unevenness when advancing towards the working face, thereby compressing the second elastic member and reducing the movement amplitude of the mine negative pressure air duct.

[0028] The beneficial effects of the present utility model are:

[0029] The present utility model can reduce the time for connecting the extended air duct, avoid the construction process of connecting the air duct multiple times in a short period of time, directly use the air duct extension and traction device to carry multiple compressed mine negative pressure air ducts, and automatically deploy them when needed, greatly improving the construction efficiency;

[0030] The present utility model greatly reduces the number of air ducts, thereby reducing the joints between the air ducts, and thus improving the ventilation efficiency of the air ducts;

[0031] The mine negative pressure air duct of the present utility model can move forward continuously with the roadheader, and the mine negative pressure air duct is deployed during the forward movement, so that the outlet of the mine negative pressure air duct and the heading face of the tunneling working face always maintain a certain distance, meeting the requirement that the air supply duct always maintains a distance within 10 m from the heading face of the working face;

[0032] The present utility model sets a limiting mechanism to clamp the mine negative pressure air duct and prevent the mine negative pressure air duct sleeved on the support frame from detaching from the support frame, and adjusts the limiting mechanism to deploy the mine negative pressure air duct when the mine negative pressure air duct needs to be deployed, avoiding the air flow being blocked due to the bending and falling of the mine negative pressure air duct;

[0033] The present utility model sets a cooperation mechanism, which can make the mine negative pressure air duct turn and move forward with the roadheader, and reduce the movement amplitude of the mine negative pressure air duct, thereby avoiding damage to the mine negative pressure air duct during the turning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic structural diagram of the first embodiment of the present utility model;

[0035] Figure 2 It is a detailed schematic diagram of the first embodiment of the present utility model;

[0036] Figure 3 It is a detailed schematic diagram of the first embodiment of the present utility model;

[0037] Figure 4 It is a schematic structural diagram of the second embodiment of the present utility model;

[0038] Figure 5 It is a detailed schematic diagram of the second embodiment of the present utility model;

[0039] Figure 6 It is a schematic structural diagram of the present utility model installed on the air flow diverter;

[0040] Figure 7 It is a schematic structural diagram of the air flow diverter in the present utility model;

[0041] Figure 8 It is a schematic structural diagram of the air flow diverter in the present utility model;

[0042] Figures 9 - 11 It is a schematic structural diagram of the adjusting mechanism in the air flow diverter of the present utility model;

[0043] Figure 12 It is a schematic installation diagram of the present utility model on the roadheader;

[0044] Figure 13 It is a schematic installation diagram of the present utility model on the advanced support in the tunneling working face;

[0045] Figure 14 This is the installation schematic diagram of the air flow diverter in the present utility model.

[0046] Wherein:

[0047] 100, air flow diverter; 102, air inlet; 103, air outlet; 104, connecting air duct; 106, steering door panel; 107, rotating shaft; 108, connecting plate; 109, lead screw; 110, positioning slide plate; 111, hydraulic cylinder; 112, ear rod; 113, bottom rail; 114, strip-shaped groove; 115, air distribution box;

[0048] 200, roadheader;

[0049] 300, air duct extension traction device; 301, side support rod; 302, fixing ring; 303, clamping plate; 304, support rod; 305, first elastic member;

[0050] 400, cooperation mechanism; 401, vertical rod support; 402, sliding sleeve; 403, sliding rod; 404, first vertical plate; 405, second vertical plate; 406, second elastic member; 407, cooperation rod; 408, cooperation groove; 409, sliding support plate; 410, roller; 411, guide rod; 412, limit ring; 413, blocking elastic piece; 414, pulling elastic piece; 415, sliding ring. Detailed implementation manners

[0051] The present utility model will be described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0052] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more. The "direction" in the present utility model is described based on the direction of the present utility model in the Figure 1 state.

[0053] The present utility model discloses an air duct extension traction device, as Figure 1As shown in the figure, it includes: a plurality of side support rods 301, a return fixing ring 302, and a limiting mechanism.

[0054] The plurality of side support rods 301 are arranged along the roadway direction and are arranged in a ring shape. The two ends of the plurality of side support rods 301 are respectively a fixed end and a free end; the return fixing ring 302 is used for fixedly connecting with the free ends of the respective side support rods 301. Preferably, the inner cavity of the return fixing ring 302 is for the free ends of the respective side support rods 301 to extend into and fixedly connect with the respective side support rods 301; thereby gathering and fixing the plurality of side support rods 301 to form a cylindrical support frame; the support frame is for a plurality of compressed mine negative pressure air ducts to be sleeved on its periphery, thereby supporting the plurality of compressed mine negative pressure air ducts.

[0055] The limiting mechanism is arranged on the periphery of the support frame and multiple limiting mechanisms can be arranged. The multiple limiting mechanisms are used to hold the mine negative pressure air duct and prevent the mine negative pressure air duct sleeved on the support frame from detaching from the support frame. There are two return fixing rings 302 and their axes coincide with the axis of the support frame.

[0056] In one embodiment, as Figure 2 shown, the limiting mechanism includes: a support rod 304. The proximal end of the support rod 304 is hinged to the return fixing ring 302, and its distal end extends away from the support frame. A first elastic member 305 is fixedly connected to the distal end of the support rod 304. The first elastic member 305 is used to push the distal end of the support rod 304 away from the return fixing ring 302, thereby enabling the distal end of the support rod 304 to extend into the mine negative pressure air duct and preventing the mine negative pressure air duct sleeved on the support frame from detaching from the support frame.

[0057] The limiting mechanism further includes: a clamping plate 303 arranged along the direction of the side support rod 301. The clamping plate 303 is fixedly connected to the outer sides of the two return fixing rings 302; the proximal end of the support rod 304 is hinged to the outer side of the clamping plate 303. The first elastic member 305 is located between the clamping plate 303 and the distal end of the support rod 304. One end of the first elastic member 305 is fixedly connected to the distal end of the support rod 304, and the other end is fixedly connected to the outer side of the clamping plate 303.

[0058] In another embodiment, as Figure 4 shown, the limiting mechanism includes: a blocking elastic piece 413, a pulling elastic piece 414, and a sliding ring 415.

[0059] The blocking elastic piece 413 is located on the periphery of the support frame. The proximal end of the blocking elastic piece 413 is fixedly connected to the return fixing ring 302, and the distal end of the blocking elastic piece 413 extends away from the support frame; the distal end of the pulling elastic piece 414 is hinged to the distal end of the blocking elastic piece 413, and the proximal end of the pulling elastic piece 414 is arranged close to the side support rod 301.

[0060] The sliding ring 415 is sleeved on the side support rod 301, and the side surface of the sliding ring 415 is hinged to the proximal end of the pulling elastic piece 414; the sliding ring 415 is used when the mine negative pressure air duct on the left side needs to be deployed or when a compressed mine negative pressure air duct needs to be sleeved on the support frame. The sliding ring 415 slides to the right, so that the distal ends of the blocking elastic piece 413 and the pulling elastic piece 414 approach the side support rod 301, facilitating the deployment of the mine negative pressure air duct or the sleeving of the compressed mine negative pressure air duct; the sliding ring 415 is also used when it is necessary to clamp the compressed mine negative pressure air duct. The sliding ring 415 slides to the left, so that the distal ends of the blocking elastic piece 413 and the pulling elastic piece 414 are far away from the side support rod 301, thereby clamping the mine negative pressure air duct.

[0061] The limiting mechanism further includes: a limiting ring 412, which is fixed on the side support rod 301 and on the left side of the sliding ring 415. The limiting ring 412 is used to limit the sliding ring 415, so that the distal ends of the blocking elastic piece 413 and the pulling elastic piece 414 are far away from the side support rod 301 and clamp the mine negative pressure air duct.

[0062] The air duct extension traction device 300 further includes: a cooperation mechanism 400, which is fixedly connected to the fixed ends of multiple side support rods 301 and is used to drive the air duct extension traction device 300 to turn or move along the roadway direction as the tunneling machine 200 moves.

[0063] As Figure 12 shown, the fixed ends of multiple side support rods 301 are fixed on the tabletop in any roadway. As Figure 6 and 14 shown, the fixed ends of multiple side support rods 301 are fixed in the air flow diverter 100. As Figure 13 shown, the fixed ends of multiple side support rods 301 are fixed on the advanced support in the tunneling face.

[0064] In one embodiment, as Figure 3 shown, the cooperation mechanism 400 includes: a vertical rod support 401, which is fixedly connected to the fixed ends of multiple side support rods 301 respectively; a sliding sleeve 402 is fixedly connected to the lower end of the vertical rod support 401. The sliding sleeve 402 is sleeved on the sliding rod 403. The two ends of the sliding rod 403 are respectively fixed between the first vertical plate 404 and the second vertical plate 405. The first vertical plate 404 and the second vertical plate 405 are fixed at the bottom of the air flow diverter 100, on the tunneling machine or on the advanced support in the tunneling face; a second elastic member 406 is sleeved on the sliding rod 403. The two ends of the second elastic member 406 respectively abut between the sliding sleeve 402 and the first vertical plate 404, and are used to enable the sliding sleeve 402 to move left and right along the sliding rod 403 when the tunneling machine 200 encounters an uneven roadway when advancing towards the working face, thereby compressing the second elastic member 406 and reducing the movement amplitude of the mine negative pressure air duct.

[0065] When the end of the air duct extension traction device 300 is fixed within the air flow diverter 100, that is, the upper end of the vertical rod support 401 is fixed to the top of the inner cavity of the air flow diverter 100 through a universal joint, and the first vertical plate 404 and the second vertical plate 405 are fixed to the bottom of the inner cavity of the air flow diverter 100, a cooperation groove 408 is formed on the side wall of the air flow diverter 100, and the cooperation groove 408 is arranged along the roadway direction; the cooperation mechanism 400 further includes: a cooperation rod 407, the cooperation rod 407 is horizontally arranged, one end of the cooperation rod 407 is fixedly connected to the side wall of the sliding sleeve 402, the other end of the cooperation rod 407 extends out of the air flow diverter 100 from the cooperation groove 408, and the cooperation rod 407 is used to change the length of the cooperation rod 407 extending out of the cooperation groove 408 driven by the mine negative pressure air duct when the roadheader 200 turns, thereby reducing the turning amplitude of the mine negative pressure air duct.

[0066] In addition, when the mine negative pressure air duct is sleeved on the air duct extension traction device, due to the gravity of the mine negative pressure air duct, the vertical rod support 401 will be subjected to a pulling force, and thus the sliding sleeve 402 will be subjected to a rightward thrust, causing the stroke of the second elastic member 406 to decrease. Therefore, the second elastic member 406 plays a role of flexible connection when the mine negative pressure air duct is sleeved on the air duct extension traction device, and thus bears the gravity of the mine negative pressure air duct and the pressure applied by personnel when loading the mine negative pressure air duct.

[0067] In another embodiment, as Figure 4 and 5 shown, the cooperation mechanism 400 includes: a vertical rod support 401, the vertical rod support 401 is fixedly connected to the fixed ends of a plurality of side support rods 301 respectively; a sliding support plate 409 is connected to the lower end of the vertical rod support 401, a pair of rollers 410 are fixedly connected to the front and rear sides of the sliding support plate 409, a sliding rod 403 is fixedly connected to the right side of the sliding support plate 409, a second elastic member 406 is sleeved on the sliding rod 403, the right end of the sliding rod 403 is used to extend into a sliding hole formed in the first vertical plate 404 and extend out of the sliding hole when the roller 410 slides to the right, both ends of the second elastic member 406 are respectively abutted between the sliding support plate 409 and the first vertical plate 404, and a plurality of guide rods 411 are fixedly connected between the first vertical plate 404 and the second vertical plate 405, and each guide rod 411 is used to guide the roller 410 and is used to allow the roller 410 to move left and right along the guide rod 411 when the roadheader 200 travels towards the working face and encounters an uneven roadway, thereby compressing the second elastic member 406 and reducing the movement amplitude of the mine negative pressure air duct.

[0068] In one embodiment, the air duct extension traction device 300 is located between the roadway air duct and the air flow diverter 100 in the roadway; thus, the mine negative pressure air duct sleeved on the air duct extension traction device 300 is connected to the roadway air duct. The lower side of the air flow diverter 100 is fixed to the top of the roadheader 200. The air inlet 102 of the air flow diverter 100 is connected to the mine negative pressure air duct sleeved on the air duct extension traction device 300. The air outlet 103 of the air flow diverter 100 is used to introduce fresh air into the working face, thereby increasing the air pressure in the working face and forcing the dust in the working face to be sucked away.

[0069] As Figure 7 and 8 shown, the air flow diverter 100 is of a housing structure. An air inlet 102 is provided on the side of the air flow diverter 100 away from the working face. An air outlet 103 is provided on the side of the air flow diverter 100 close to the working face. An adjustment port is provided on the side of the air flow diverter 100 close to the air distribution box 115. An adjustment mechanism is arranged inside the air flow diverter 100. The adjustment mechanism is used to adjust the air volume of the fresh air entering the air distribution box 115 through the adjustment port, thereby adjusting the air pressure on both sides of the roadway.

[0070] As Figures 9 - 11 shown, the adjustment mechanism includes: a turning door plate 106, a connecting plate 108, and a hydraulic cylinder 111.

[0071] The turning door plate 106 is arranged close to the adjustment port. One side of the turning door plate 106 is fixedly connected to a rotating shaft 107 sleeved on the housing of the air flow diverter 100. One end of the connecting plate 108 is fixedly connected to the lower end of the rotating shaft 107. The hydraulic cylinder 111 is located at the bottom of the air flow diverter 100. The fixed end of the hydraulic cylinder 111 is fixed to the bottom of the air flow diverter 100. The movable end of the hydraulic cylinder 111 is hinged to the other end of the connecting plate 108. The hydraulic cylinder 111 is used to pull the other end of the connecting plate 108 to move left and right, thereby causing the rotating shaft 107 to rotate, and then rotating the turning door plate 106.

[0072] The adjustment mechanism further includes: a positioning slide plate 110. The left side of the positioning slide plate 110 abuts against the movable end of the hydraulic cylinder 111. The right side of the positioning slide plate 110 is fixedly connected to the left end of a lead screw 109. The right end of the lead screw 109 is fixed to the bottom of the air flow diverter 100. The positioning slide plate 110 is used to abut against the movable end of the hydraulic cylinder 111, thereby limiting the hydraulic cylinder 111 and keeping the turning door plate 106 at a certain opening degree.

[0073] Two symmetrically arranged ear rods 112 are fixedly connected to the lower side of the positioning slide plate 110; the adjusting mechanism further includes: a bottom rail 113, the bottom of the bottom rail 113 is fixed to the bottom of the inner cavity of the air flow diverter 100, the bottom rail 113 is a strip-shaped rectangular frame, strip-shaped grooves 114 are formed on both longer sides of the bottom rail 113, and the two strip-shaped grooves 114 are both used for the two ear rods 112 of the positioning slide plate 110 to extend into, so that the positioning slide plate 110 reciprocates along the direction of the strip-shaped groove 114 under the drive of the lead screw 109.

[0074] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind tube extension and traction device, characterized in that: include: A plurality of side support rods (301) are arranged along the direction of the lane and in a ring shape, with two ends thereof being a fixed end and a free end respectively; A reinforcing ring (302) is used for being fixedly connected to the free end of each of the side support rods (301); thereby bringing together and fixing the plurality of side support rods (301) to form a cylindrical support frame; the support frame is used for sleeves of a plurality of compressed mining negative pressure wind tubes on its periphery, thereby supporting the plurality of compressed mining negative pressure wind tubes; The limiting mechanism is arranged on the periphery of the supporting frame, and is used to clamp the mining negative pressure air cylinder and prevent the mining negative pressure air cylinder sleeved on the supporting frame from being separated from the supporting frame.

2. The wind tube extension and traction device according to claim 1, characterized in that: The reinforcing rings (302) are provided with two, and their axes coincide with the axis of the supporting frame.

3. The wind tube extension and traction device according to claim 2, characterized in that: The limiting mechanism comprises: A support rod (304), wherein the proximal end of the support rod (304) is hinged to the fixing ring (302), and the distal end thereof extends in a direction away from the support frame. The distal end of the support rod (304) is fixedly connected to a first elastic member (305), and the first elastic member (305) is used to stretch the distal end of the support rod (304) in a direction away from the fixing ring (302), thereby allowing the distal end of the support rod (304) to extend into the mining negative pressure air duct and preventing the mining negative pressure air duct mounted on the support frame from detaching from the support frame.

4. The wind tube extension and traction device according to claim 3, characterized in that: The limiting mechanism further comprises: a clamping plate (303) arranged along the direction of the side support rod (301), the clamping plate (303) being fixedly connected to the outer sides of the two reinforcing rings (302); the proximal end of the support rod (304) being hinged to the outer side of the clamping plate (303), the first elastic member (305) being located between the clamping plate (303) and the distal end of the support rod (304), one end of the first elastic member (305) being fixedly connected to the distal end of the support rod (304), and the other end of the first elastic member (305) being fixedly connected to the outer side of the clamping plate (303).

5. The wind tube extension and traction device according to claim 2, characterized in that: The limiting mechanism comprises: The blocking spring piece (413) is located at the periphery of the support frame, the proximal end of which is fixedly connected to the fixing ring (302), and the distal end of which extends in a direction away from the support frame; Pulling the spring sheet (414), the distal end of which is hinged to the distal end of the blocking spring sheet (413), and the proximal end of which is disposed close to the side support rod (301); A sliding ring (415) is sleeved on the side support rod (301), and its side surface is hinged to the proximal end of the pulling spring sheet (414); when the left side negative pressure mine air duct needs to be unfolded or a compressed negative pressure mine air duct needs to be inserted on the support frame, the sliding ring (415) slides to the right to make the distal end of the blocking spring sheet (413) and the distal end of the pulling spring sheet (414) close to the side support rod (301), so as to facilitate the unfolding of the negative pressure mine air duct or the insertion of the compressed negative pressure mine air duct; and when the compressed negative pressure mine air duct needs to be clamped, the sliding ring (415) slides to the left to make the distal end of the blocking spring sheet (413) and the distal end of the pulling spring sheet (414) away from the side support rod (301), so as to clamp the negative pressure mine air duct.

6. The wind tube extension and traction device according to claim 5, characterized in that: The limiting mechanism also includes: A limiting ring (412) is fixed on the side support rod (301) and on the left side of the sliding ring (415) and is used to limit the sliding ring (415), thereby making the distal end of the blocking spring sheet (413) and the distal end of the pulling spring sheet (414) move away from the side support rod (301) and clamp the mining negative pressure air cylinder.

7. A wind tube extension and traction device according to claim 4 or 6, characterized in that: The wind tube extension and traction device (300) further comprises: a coordination mechanism (400), wherein the coordination mechanism (400) is fixedly connected to the fixed ends of the plurality of side support rods (301) and is used to drive the wind tube extension and traction device (300) to turn or move along the direction of the tunnel as the tunnel boring machine (200) moves.

8. The wind tube extension and traction device according to claim 7, characterized in that: The fixed ends of the plurality of side support rods (301) are fixed inside the wind flow reversing device (100), on the tunnel boring machine or on the leading support of the tunnel boring working face.

9. The wind tube extension and traction device according to claim 8, characterized in that: The collaborative mechanism (400) comprises: The vertical pole bracket (401) is respectively fixedly connected to the fixed ends of the plurality of side support poles (301); a sliding sleeve (402) is fixedly connected to the lower end thereof; the sliding sleeve (402) is sleeved on the sliding pole (403); the two ends of the sliding pole (403) are respectively fixed between a first vertical plate (404) and a second vertical plate (405); the first vertical plate (404) and the second vertical plate (405) are fixed to the bottom of the wind flow reversing device (100), on a tunnel boring machine or On the advance support of the excavation working face; a second elastic member (406) is sleeved on the sliding rod (403), and the two ends of the second elastic member (406) are respectively abutted between the sliding sleeve (402) and the first vertical plate (404), and are used to enable the sliding sleeve (402) to move left and right along the sliding rod (403) when the excavator (200) encounters an uneven tunnel when moving toward the working face, thereby compressing the second elastic member (406) and reducing the movement amplitude of the mining negative pressure blower.

10. The wind tube extension and traction device according to claim 8, characterized in that: The collaborative mechanism (400) comprises: The vertical pole bracket (401) is respectively fixedly connected to the fixed ends of the plurality of side poles (301); the lower end thereof is connected to a sliding support plate (409); the front and rear sides of the sliding support plate (409) are fixedly connected to a pair of rollers (410); the right side of the sliding support plate (409) is fixedly connected to a sliding rod (403); a second elastic member (406) is sleeved on the sliding rod (403); the right end of the sliding rod (403) is used to extend into a sliding hole provided on the first vertical plate (404) and extend out of the sliding hole when the roller (410) slides to the right. The second elastic member (406) has two ends respectively abutting between the sliding support plate (409) and the first vertical plate (404); a plurality of guide rods (411) are also fixedly connected between the first vertical plate (404) and the second vertical plate (405); each guide rod (411) is used to guide the roller (410) and to enable the roller (410) to move left and right along the guide rod (411) when the tunnel boring machine (200) encounters an uneven tunnel when moving toward the working face, thereby compressing the second elastic member (406) and reducing the movement amplitude of the mining negative pressure wind tube.

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