Hanging mechanism for stretching negative pressure air duct

Abstract

The utility model discloses a hanging mechanism for stretching and retracting a negative pressure air duct, which comprises a plurality of rolling channel steels, fixed connecting pieces sleeved among the rolling channel steels, and hanging moving pieces matched with the rolling channel steels in a rolling manner, and openings are formed in the bottoms of the rolling channel steels and the fixed connecting pieces; end face fixing holes are formed in at least two faces of the fixed connecting piece at intervals, fastening screw rods are arranged in the end face fixing holes, the hanging moving piece comprises a hanging plate, and the two ends of the hanging plate in the rolling channel steel direction are provided with anti-locking inclined blocks opposite in inclination direction respectively. A plurality of bearing rollers capable of rolling in the rolling channel steel are symmetrically arranged at the upper end of the hanging plate, the connecting shaft rod penetrates through the hanging plate to be connected between the bearing rollers, the lower end of the hanging plate is connected with a hanging hook through a connecting hole, and the hanging hook is connected with a hanging lug on the negative pressure air duct. The negative-pressure air duct is convenient to disassemble, stable and firm in connection, labor is reduced, the negative-pressure air duct is convenient to move and stretch out and draw back, and the hanging moving piece is effectively prevented from being clamped.

Description

Technical Field

[0001] The utility model relates to the technical field related to dust removal fans for mines, and in particular to a hanging mechanism for telescoping a negative pressure air duct. Background Art

[0002] Mining dust removal fans are essential equipment for mine production. The negative pressure wind tube used in mining dust removal fans is refined by high-pressure heat-sealing process with seamless tube blanks and high elastic spring steel rings. It has the advantages of good suction effect, easy turning, convenient transportation and storage (each section is independently packaged), and longer service life. It is suitable for ventilation and dust removal in coal mines, especially for gas extraction and exhaust, and also for dust exhaust and ventilation in tunnel projects. However, since the existing negative pressure wind tube (dust suction) needs to be manually hung directly on the top frame of the mine with steel ropes during installation, it cannot be moved in real time. The negative pressure wind tube used in the existing mining dust removal fan is 5 meters per section, and the weight of each section is 80-100Kg. With the continuous extension of the mine excavation face, the negative pressure wind tube needs to be moved to the front excavation face. The current method requires temporary removal of all negative pressure wind tubes and reinstallation in the direction of the excavation face. The installation and removal of the negative pressure wind tube requires at least five people to move it manually, which is labor-intensive and unsafe, and the efficiency is extremely low. Utility Model Content

[0003] In view of the problems existing in the hanging of negative pressure ducts in the above-mentioned prior art, the utility model provides a hanging mechanism for telescopic negative pressure ducts, which is easy to install and disassemble, can quickly telescope the negative pressure duct when in use, and reduces manual labor intensity.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a hanging mechanism for telescopic negative pressure air duct, which includes a plurality of rolling channel steel sections, a fixed connecting piece sleeved between the rolling channel steels and a hanging movable piece rollingly matched with the rolling channel steels, the rolling channel steels and the fixed connecting piece are provided with openings at the bottom, end face fixing holes are arranged at intervals on at least two surfaces of the fixed connecting piece, and fastening screws are arranged in the end face fixing holes, and the hanging movable piece includes a hanging plate, and anti-stuck tilting blocks with opposite tilting directions are respectively arranged at both ends of the hanging plate along the rolling channel steel direction, and a plurality of bearing rollers that can roll in the rolling channel steel are symmetrically arranged on the upper end of the hanging plate, a connecting shaft rod passes through the hanging plate and is connected between the bearing rollers, a hanging hook is connected to the lower end of the hanging plate through a connecting hole, and the hanging hook is connected to the hanging ear on the negative pressure air duct.

[0005] Furthermore, an anti-drop rotation lock cap is provided on the hanging hook.

[0006] The utility model has the following beneficial effects: 1. The segmented rolling channel steels are connected by fixed connecting parts and are equipped with fastening screws for multi-sided fixing, which is convenient for disassembly, stable and reliable connection, and reduces labor; 2. The upper end of the hanging plate of the hanging moving part is designed with a bearing roller, which is convenient for moving and retracting the negative pressure air duct in the rolling channel steel; 3. Anti-stuck inclined blocks with opposite inclined directions are designed on the front and rear sides of the hanging plate, which can effectively prevent the hanging moving parts from getting stuck during the movement of the hanging moving parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a schematic diagram of the structure of the utility model in use state;

[0008] Figure 2 yes Figure 1 AA section enlarged structural diagram;

[0009] Figure 3 It is a schematic diagram of the main enlarged structure of the hanging moving part in the utility model;

[0010] Figure 4 It is a schematic diagram of an enlarged top view of the hanging movable part in the utility model.

[0011] In the figure, 1. mining dust removal fan; 2. hanging moving parts; 3. fixed connecting parts; 4. top frame; 5. steel hinge; 6. rolling channel steel; 7. hanging ears; 8. tunnel; 9. negative pressure wind tube; 10. hanging plate; 11. bearing roller; 12. connecting shaft; 13. fastening screw; 14. anti-stuck tilting block; 15. end face fixing hole; 16. opening; 17. hanging hook; 18. anti-slip rotating lock cap; 19. connecting hole. DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0013] As shown in the figure, the hanging mechanism for telescopic extension of the negative pressure wind tube is installed in the underground tunnel 8, the negative pressure wind tube 9 is connected to the mining dust removal fan 1, and the hanging mechanism for telescopic extension of the negative pressure wind tube includes a plurality of rolling channel steels 6, a fixed connecting member 3 sleeved between the rolling channel steels 6, and a hanging movable member 2 that cooperates with the rolling channel steels in a rolling manner. Each section of the rolling channel steel is movably connected to a steel hinge 5 fixed on the top frame 4. An opening 16 is provided at the bottom of the rolling channel steel 6 and the fixed connecting member 3. End surface fixing holes 15 are arranged at intervals on at least two surfaces of the fixed connecting member 3. The end surface fixing holes A fastening screw 13 is arranged inside, and the hanging movable part 2 includes a hanging plate 10. The hanging plate 10 has anti-stuck tilting blocks 14 with opposite tilting directions at both ends along the rolling channel steel direction. A plurality of bearing rollers 11 that can roll in the rolling channel steel are symmetrically arranged on the upper end of the hanging plate. The connecting shaft 12 passes through the hanging plate and is connected between the bearing rollers. A hanging hook 17 is connected to the lower end of the hanging plate through a connecting hole 19. The hanging hook is connected to the hanging ear 7 on the negative pressure wind tube 9. To prevent the hanging ear from falling off from the hanging hook, an anti-falling rotating lock cap 18 is arranged on the hanging hook 17.

[0014] When the utility model is in use, the hanging movable part is first put into the rolling channel steel, and then each section of the rolling channel steel is movably connected to the steel hinge on the top frame of the tunnel, and then each adjacent section of the rolling channel steel is sleeved into the fixed connecting part. In order to better fix each section of the rolling channel steel, a fastening screw is screwed into the end surface fixing hole of the top surface and a side surface of the fixed connecting part to support the rolling channel steel, and then the hanging ear of the negative pressure air cylinder is buckled into the hanging hook. When the excavation face continues to extend and the negative pressure air cylinder needs to be moved, there is no need to remove the negative pressure air cylinder. It is only necessary to continue to use the fixed connecting part at the rolling channel steel at the front end of the tunnel to connect multiple rolling channel steels, and then push the telescopic negative pressure air cylinder to roll forward in the drum channel steel along with the hanging movable part. Moreover, since the anti-stuck inclined blocks with opposite inclined directions are arranged on the hanging plate, there is no space for adjacent hanging movable parts to squeeze each other, and the adjacent hanging movable parts will not be stuck when the hanging movable parts move back and forth and collide.

[0015] The above implementation modes are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to specific embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of protection of the claims of the utility model.

Claims

1. Suspension mechanism for extension and retraction of negative pressure air duct, characterized by: The invention comprises a plurality of rolling channel steel sections (6), a fixed connection member (3) sleeved between the rolling channel steel sections, and a hanging movable member (2) rollingly matched with the rolling channel steel sections, the rolling channel steel sections (6) and the fixed connection member (3) having openings (16) at the bottom, end surface fixing holes (15) being arranged at intervals on at least two surfaces of the fixed connection member (3), and fastening screws (13) being arranged in the end surface fixing holes, the hanging movable member (2) comprising a hanging plate (10), the hanging plate (10) having anti-stuck tilting blocks (14) with opposite tilting directions respectively arranged at both ends along the rolling channel steel section (6), a plurality of bearing rollers (11) capable of rolling in the rolling channel steel sections being symmetrically arranged at the upper end of the hanging plate, a connecting shaft (12) passing through the hanging plate and connected between the bearing rollers, a hanging hook (17) being connected to the lower end of the hanging plate through a connecting hole (19), and the hanging hook being connected to a hanging ear (7) on a negative pressure wind tube.

2. The hanging mechanism for extension and contraction of the negative pressure air duct according to claim 1, characterized in that: The hanging hook (17) is provided with an anti-drop rotation lock cap (18).

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