Hoisting mechanism for fire-fighting air duct

Abstract

The utility model discloses a hoisting mechanism for a fire-fighting air duct, which comprises a support frame, a mounting seat is fixedly welded at the upper end of the support frame, a connecting block is fixedly welded on the inner side of the support frame, and a two-way screw is in threaded connection with the inside of the connecting block. The distance between the two supporting frames can be adjusted so that fire-fighting air ducts with different widths can be supported, the supporting frames can be guided to move through the design of the guide sleeves, the sliding blocks, the supporting sleeves and the guide blocks, the situation that the two-way screw rotates to drive the connecting blocks and the supporting frames to rotate is effectively prevented, and the ball is driven to rotate by rotating the screw; the supporting block, the guide block and the supporting sleeve are driven to move longitudinally, the longitudinal position of the fire-fighting air duct can be adjusted conveniently, follow-up butt-joint installation of the fire-fighting air duct is facilitated, the supporting block can be guided to move through the design of the bolt and the ball, the fire-fighting air duct can be supported conveniently, and the labor intensity of manual lifting and placing of the supporting sleeve is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of fire-fighting ventilation duct devices, specifically a hoisting mechanism for fire-fighting ventilation ducts. Background Technology

[0002] Fire ducts, as ventilation pipes, are generally installed on the top of buildings. When installing and fixing fire ducts, hoisting equipment is required to secure them to prevent displacement or detachment.

[0003] Currently, eight lifting components are fixedly connected to the top of the building with bolts. Then, the pipe is placed between the lower and upper sliding plates, which can support and fix the pipe. By tightening the Phillips bolts, the two lower sliding plates can slide up and down on the two profile columns, thereby changing the height of the pipe. This facilitates subsequent pipe connection work and reduces the difficulty of the workers' work.

[0004] For example, the hoisting device for fire ducts disclosed in patent announcement CN221943412U includes two profile columns, each with a sliding groove; a sliding connector is slidably connected to both sides of each of the two profile columns; two sliding connectors on each side of the four sliding connectors form a group, and the bottom of each group of sliding connectors is fixedly connected to a lower sliding plate by bolts; a Phillips bolt is threaded onto each of the four sliding connectors. However, in such a hoisting device for fire ducts, the fixed spacing between the two profile columns makes it inconvenient to support fire ducts of different widths. Furthermore, during the longitudinal movement of the fire duct, the operator needs to continuously support and rotate and tighten the Phillips bolts to fix the lower sliding plate, resulting in high manual labor intensity.

[0005] As can be seen from the solutions disclosed in the existing patent documents, the spacing between the two profile columns is fixed, which is inconvenient for supporting fire ducts of different widths. Furthermore, during the longitudinal movement of the fire duct, the operator needs to continuously support and rotate and tighten the plum blossom bolts to fix the lower sliding plate, which is labor-intensive. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The purpose of this utility model is to provide a hoisting mechanism for fire ventilation ducts, so as to solve the problems of fixed spacing between two profile columns, inconvenience in supporting fire ventilation ducts of different widths, and the need for operators to continuously support and rotate and tighten the plum blossom bolts to fix the lower sliding plate during the longitudinal movement of the fire ventilation duct, resulting in high manual labor intensity.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a hoisting mechanism for fire-fighting ventilation ducts, comprising a support frame, a mounting base fixedly welded to the upper end of the support frame, a connecting block fixedly welded to the inner side of the support frame, a bidirectional screw threadedly connected to the inside of the connecting block, a nut fixedly welded to the middle of the bidirectional screw, a guide sleeve fixedly welded to the inner side of the lower end of the support frame, a slider slidably sleeved inside the guide sleeve, the inner side of the support frame closely adhering to the fire-fighting ventilation duct, a support sleeve slidably sleeved inside the support frame, a guide block slidably sleeved inside the support sleeve, a bolt threadedly connected to the inside of the support sleeve, a support block fixedly connected to one end of the guide block, a guide rod fixedly welded to the lower end face of the guide block, a ball slidably sleeved inside the lower end of the support block, and a screw fixedly welded to the lower end of the ball.

[0008] Preferably, the support frame has a sliding groove inside, and a mounting seat is fixedly welded to the upper end of one side of the connecting block. By rotating the nut, the bidirectional screw can be rotated, which can adjust the distance between the two support frames so as to support fire ducts of different widths.

[0009] Preferably, the guide sleeve has a movable groove inside, and the connecting block has a threaded hole inside. The design of the guide sleeve, slider, support sleeve and guide block can guide the movement of the support frame and effectively prevent the rotation of the bidirectional screw from causing the connecting block and support frame to rotate.

[0010] Preferably, the slider has an internal sliding sleeve for the guide rod, and the slider has an internal threaded screw. By rotating and tightening the screw, the guide block can be pressed to fix its position and prevent the support block from moving left or right.

[0011] Preferably, the support sleeve has a movable groove inside, one end of the bolt presses against the guide block, and the ball is rotated by rotating the screw, which drives the support block, guide block and support sleeve to move longitudinally, so as to facilitate the adjustment of the longitudinal position of the fire duct and facilitate the subsequent docking and installation of the fire duct.

[0012] Preferably, the slider has a sliding hole inside, the upper end of the support block is in close contact with the fire duct, and the spherical design can prevent the bolt from rotating and causing the support block to rotate, so that the bolt can effectively adjust the height position of the support sleeve and the support block.

[0013] Preferably, the slider has a threaded hole inside, the upper end of the support sleeve is in close contact with the fire duct, and the design of the bolt and ball can guide the movement of the support block to support the fire duct and reduce the labor intensity of manually lifting and placing the support sleeve.

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

[0015] 1. This utility model uses the rotation of a nut to drive the bidirectional screw to rotate, which can adjust the distance between the two support frames to support fire ducts of different widths. The design of the guide sleeve, slider, support sleeve and guide block can guide the movement of the support frame and effectively prevent the rotation of the bidirectional screw from causing the connecting block and support frame to rotate. By rotating and tightening the screw to press the guide block, the position of the guide block can be fixed to prevent the support block from moving left and right.

[0016] 2. This utility model uses a rotating screw to drive the ball to rotate, which in turn drives the support block, guide block, and support sleeve to move longitudinally. This facilitates the adjustment of the longitudinal position of the fire duct, enabling subsequent connection and installation of the fire duct. The ball's design prevents the bolt from rotating and causing the support block to rotate, allowing the bolt to effectively adjust the height of the support sleeve and support block. The design of the bolt and ball guides the movement of the support block to support the fire duct, reducing the labor intensity of manually lifting and placing the support sleeve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an enlarged perspective view of the support sleeve of this utility model;

[0019] Figure 3 This is an enlarged perspective view of the screw of this utility model;

[0020] Figure 4 This is an enlarged perspective view of the support block of this utility model;

[0021] Figure 5 This is an enlarged perspective view of the guide rod of this utility model.

[0022] In the diagram: 1 support frame, 11 mounting base, 12 connecting block, 13 double-acting screw, 14 nut, 15 guide sleeve, 16 slider, 17 fire ventilation duct, 2 support sleeve, 21 guide block, 22 bolt, 23 support block, 24 guide rod, 25 ball, 26 screw. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-5The diagram shows a hoisting mechanism for a fire-fighting ventilation duct, comprising a support frame 1. A mounting base 11 is fixedly welded to the upper end of the support frame 1. A connecting block 12 is fixedly welded to the inner side of the support frame 1. A double-ended screw 13 is threadedly connected to the inside of the connecting block 12. A nut 14 is fixedly welded to the middle of the double-ended screw 13. A guide sleeve 15 is fixedly welded to the inner side of the lower end of the support frame 1. A slider 16 is slidably fitted inside the guide sleeve 15. The inner side of the support frame 1 is tightly fitted with a fire-fighting ventilation duct 17. A slider 16 is slidably fitted inside the support frame 1. The support sleeve 2 has a guide block 21 that is slidably fitted inside it. The support sleeve 2 has a bolt 22 that is threadedly connected inside it. One end of the guide block 21 is fixedly connected to a support block 23. A guide rod 24 is fixedly welded to the lower end of the guide block 21. A ball 25 is slidably fitted inside the lower end of the support block 23. The design of the ball 25 can prevent the bolt 22 from rotating and causing the support block 23 to rotate, so that the bolt 22 can effectively adjust the height position of the support sleeve 2 and the support block 23. A screw 26 is fixedly welded to the lower end of the ball 25.

[0025] To facilitate support for fire ventilation ducts 17 of varying widths, the support frame 1 has an internal sliding groove. A mounting base 11 is welded to the upper side of one side of the connecting block 12. Rotating the nut 14 drives the bidirectional screw 13 to rotate, adjusting the distance between the two support frames 1 to support fire ventilation ducts 17 of different widths. The guide sleeve 15 has an internal moving groove, and the connecting block 12 has an internal threaded hole. The design of the guide sleeve 15, slider 16, support sleeve 2, and guide block 21 guides the movement of the support frame 1 and effectively prevents the bidirectional screw 13 from rotating and causing the connecting block 12 and support frame 1 to rotate. The slider 16 internally slides onto the guide rod 24, and the slider 16 internally is connected to a screw 26 via a thread. Tightening the screw 26 by rotating it presses the guide block 21, fixing its position and preventing the support block 23 from moving left or right.

[0026] To reduce the labor intensity of manually lifting and placing the support sleeve 2, the support sleeve 2 is equipped with a moving groove inside. One end of the bolt 22 presses against the guide block 21. By rotating the screw 26, the ball 25 is rotated, which drives the support block 23, the guide block 21 and the support sleeve 2 to move longitudinally, so as to facilitate the adjustment of the longitudinal position of the fire duct 17 for subsequent docking and installation of the fire duct 17. The slider 16 is equipped with a sliding hole inside. The upper end of the support block 23 is in close contact with the fire duct 17. The slider 16 is equipped with a threaded hole inside. The upper end of the support sleeve 2 is in close contact with the fire duct 17. The design of the bolt 22 and the ball 25 can guide the movement of the support block 23 to support the fire duct 17 and reduce the labor intensity of manually lifting and placing the support sleeve 2.

[0027] The hoisting mechanism for this fire duct uses a double-ended screw 13 to rotate by turning the nut 14, which adjusts the distance between the two support frames 1 to support fire ducts 17 of different widths. The design of the guide sleeve 15, slider 16, support sleeve 2, and guide block 21 guides the movement of the support frame 1 and effectively prevents the rotation of the double-ended screw 13 from causing the connecting block 12 and support frame 1 to rotate. By turning the tightening screw 26 to press the guide block 21, the position of the guide block 21 can be fixed, preventing the support block 23 from moving left and right. By turning the screw 26 to rotate the ball 25, the support block 23, guide block 21, and support sleeve 2 can be moved longitudinally, facilitating the adjustment of the longitudinal position of the fire duct 17 for subsequent docking and installation. The design of the ball 25 prevents the bolt 22 from rotating and causing the support block 23 to rotate, allowing the bolt 22 to effectively adjust the height of the support sleeve 2 and support block 23. The design of the bolt 22 and the ball 25 guides the movement of the support block 23 to support the fire duct 17, reducing the labor intensity of manually lifting and placing the support sleeve 2.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hoisting mechanism for fire-fighting ventilation ducts, comprising a support frame (1), wherein a mounting base (11) is fixedly welded to the upper end of the support frame (1), characterized in that: A connecting block (12) is fixedly welded to the inner side of the support frame (1). A double-ended screw (13) is threadedly connected to the inside of the connecting block (12). A nut (14) is fixedly welded to the middle of the double-ended screw (13). A guide sleeve (15) is fixedly welded to the inner side of the lower end of the support frame (1). A slider (16) is slidably sleeved inside the guide sleeve (15). The inner side of the support frame (1) is tightly attached to the fire ventilation duct (17). An internal sliding support sleeve (2) is fitted, and a guide block (21) is fitted inside the support sleeve (2). A bolt (22) is threadedly connected inside the support sleeve (2). A support block (23) is fixedly connected to one end of the guide block (21). A guide rod (24) is fixedly welded to the lower end face of the guide block (21). A ball (25) is fitted inside the lower end of the support block (23). A screw (26) is fixedly welded to the lower end of the ball (25).

2. The hoisting mechanism for fire-fighting ventilation ducts according to claim 1, characterized in that: The support frame (1) has a sliding groove inside, and the upper end of one side of the connecting block (12) is fixedly welded with a mounting base (11).

3. The hoisting mechanism for fire-fighting ventilation ducts according to claim 1, characterized in that: The guide sleeve (15) has a movable groove inside, and the connecting block (12) has a threaded hole inside.

4. The hoisting mechanism for fire-fighting ventilation ducts according to claim 1, characterized in that: The slider (16) is internally connected to the guide rod (24), and the slider (16) is internally connected to the screw (26) by a thread.

5. A hoisting mechanism for fire-fighting ventilation ducts according to claim 1, characterized in that: The support sleeve (2) has a movable groove inside, and one end of the bolt (22) presses against the guide block (21).

6. A hoisting mechanism for fire-fighting ventilation ducts according to claim 1, characterized in that: The slider (16) has a sliding hole inside, and the upper end of the support block (23) is in close contact with the fire duct (17).

7. A hoisting mechanism for fire-fighting ventilation ducts according to claim 1, characterized in that: The slider (16) has a threaded hole inside, and the upper end of the support sleeve (2) is in close contact with the fire duct (17).

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