A lifting device for closing the cover of a flue device

Abstract

The present invention discloses a lifting device for closing a flue device, comprising: a lifting mechanism and a manual winding mechanism; the lifting mechanism includes a pulley block and a steel wire rope, the pulley block is used to be arranged above the furnace door, one end of the steel wire rope is fixedly connected to the top of the furnace door, and the other end bypasses the pulley block and is fixedly connected to the manual winding mechanism; wherein, the manual winding mechanism includes: a transmission shaft, a second gear, a first gear, a winding roller and a winding box, the winding roller is rotatably arranged in the winding box, the first gear is coaxially fixed to one end of the winding roller, the second gear is rotatably arranged in the winding box, and the second gear is meshed with the first gear, the first end of the transmission shaft is fixedly connected to the middle of the second gear, the second end of the transmission shaft extends out of the winding box and is fixedly connected to a handle, and a self-locking component is arranged on the handle. The present invention realizes the winding and unwinding of the steel wire rope by rotating the handle, and locks the handle through the self-locking component, which is convenient for opening the furnace door plate to clean condensate.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal glass production equipment, and particularly relates to a lifting device for closing the cover of a flue device. Background Art

[0002] In the production of liquid crystal glass, the flue gas is discharged through the flue after being treated by different processes to meet the flue gas emission standards. In order to quickly condense the dust such as boride in the flue gas, the cooling air is provided for cooling in the flue assembly part, which makes a large amount of condensate often exist at the flue opening. And the blockage of the flue opening by the condensate will affect the internal pressure of the furnace. In order to ensure the normal furnace pressure and the stable process, it is necessary to regularly open the furnace door plate at the flue opening to clean and discharge the condensate. Since the furnace door plate is installed on the flue assembly, the opening and closing of the furnace door plate both need to be manually operated, and the whole process is not easy to control and affects the furnace pressure, which will cause fluctuations in process parameters. Summary of the Invention

[0003] To solve the technical problems existing in the background art, the present invention proposes a lifting device for closing the cover of a flue device.

[0004] A lifting device for closing the cover of a flue device proposed by the present invention includes: a lifting mechanism and a manual winding mechanism;

[0005] The lifting mechanism includes a pulley block and a steel wire rope. The pulley block is used to be arranged above the furnace door. One end of the steel wire rope is fixedly connected to the top of the furnace door, and the other end bypasses the pulley block and is fixedly connected to the manual winding mechanism;

[0006] The manual winding mechanism includes: a transmission shaft, a second gear, a first gear, a winding roller and a winding box. The winding roller is rotatably arranged in the winding box. The first gear is coaxially fixed to one end of the winding roller. The second gear is rotatably arranged in the winding box, and the second gear is meshed with the first gear. The first end of the transmission shaft is fixedly connected to the middle of the second gear. The second end of the transmission shaft extends out of the winding box and is fixedly connected to a handle, and a self-locking component is arranged on the handle.

[0007] Preferably, the self-locking component includes a positioning sleeve, a first limiting sleeve, a second limiting sleeve, a second limiting sleeve, a ratchet ring, a limiting ratchet pawl assembly, an installation cylinder and a flexible friction sleeve;

[0008] The positioning sleeve is coaxially fixed to the second end of the transmission shaft. The first limiting sleeve is coaxially fixed to the end of the positioning sleeve away from the winding box. The second limiting sleeve is coaxially fixed to the end of the positioning sleeve close to the winding box;

[0009] The handle includes a sleeve portion and a handle portion provided on the sleeve portion. The sleeve portion, the flexible friction sleeve, and the mounting cylinder are sequentially sleeved on the positioning sleeve in the direction from the first limiting sleeve to the second limiting sleeve. The inner peripheral wall of the sleeve portion is provided with internal threads, and the outer thread of the positioning sleeve is provided with external threads matching the internal threads, and the external threads are threadedly connected to the internal threads;

[0010] The ratchet ring is coaxially fixed to one end of the mounting cylinder close to the second limiting sleeve; the limiting ratchet pawl assembly is mounted on the winding box on one side of the ratchet ring, and the limiting ratchet pawl assembly is used to limit the rotation of the ratchet ring when the steel wire rope is unreeled or has a tendency to unreel.

[0011] Preferably, the second limiting sleeve is an umbrella-shaped structure integrally formed at one end of the positioning sleeve close to the winding box, and one end of the mounting cylinder close to the second limiting sleeve is provided with a first umbrella-shaped surface matching the umbrella-shaped structure.

[0012] Preferably, one end of the mounting cylinder away from the second limiting sleeve is provided with a second umbrella-shaped surface, and one end of the flexible friction sleeve close to the mounting cylinder is provided with a third umbrella-shaped surface matching the second umbrella-shaped surface.

[0013] Preferably, one end of the sleeve portion close to the flexible friction sleeve is provided with a fourth umbrella-shaped surface, and one end of the flexible friction sleeve close to the sleeve portion is provided with a fifth umbrella-shaped surface matching the third umbrella-shaped surface.

[0014] Preferably, one end of the first limiting sleeve close to the sleeve portion is provided with a first wedge-shaped surface, and one end of the sleeve portion close to the first limiting sleeve is provided with a second wedge-shaped surface matching the first wedge-shaped surface.

[0015] Preferably, the limiting ratchet pawl member includes a rotating shaft, a ratchet pawl member, and a torsion spring. The rotating shaft is rotatably provided on the winding box on one side of the ratchet ring, the ratchet pawl member is rotatably provided on the rotating shaft, and the torsion spring is connected between the ratchet pawl member and the winding box, so that the ratchet pawl of the ratchet pawl member and the ratchet ring maintains one-way engagement when the steel wire rope is unreeled or has a tendency to unreel.

[0016] Preferably, the first limiting sleeve is fixed to the positioning sleeve in a detachable manner.

[0017] In the present invention, the proposed lifting device for the cover of the flue gas equipment realizes the winding and unwinding of the steel wire rope by rotating the handle, and locks the handle through the self-locking assembly, which is convenient for opening the furnace door panel to clean the condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the lifting device for the cover of the flue gas equipment in an embodiment proposed by the present invention.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the manual winding mechanism in an embodiment proposed by the present invention. Figure 1 。

[0020] Figure 3 Schematic three-dimensional structure of the manual winding mechanism in an embodiment proposed by the present invention Figure 2 .

[0021] Figure 4 Cross-sectional schematic view of the manual winding mechanism in an embodiment proposed by the present invention. Specific implementation manners

[0022] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] Refer to Figures 1-4 , a lifting device for closing the cover of a flue gas device proposed by the present invention, comprising: a lifting mechanism and a manual winding mechanism;

[0024] The lifting mechanism includes a pulley block and a steel wire rope 1. The pulley block 2 is used to be arranged above the furnace door. One end of the steel wire rope 1 is fixedly connected to the top of the furnace door, and the other end bypasses the pulley block 2 and is fixedly connected to the manual winding mechanism;

[0025] Among them, the manual winding mechanism includes: a transmission shaft 7, a second gear 6, a first gear 5, a winding roller 4 and a winding box 3. The winding roller 4 is rotatably arranged in the winding box 3. The first gear 5 is coaxially fixed to one end of the winding roller 4. The second gear 6 is rotatably arranged in the winding box 3, and the second gear 6 is meshed with the first gear 5. The first end of the transmission shaft 7 is fixedly connected to the middle of the second gear 6. The second end of the transmission shaft 7 extends out of the winding box 3 and is fixedly connected to a handle 9. A self-locking assembly is arranged on the handle 9.

[0026] The present invention realizes the winding and unwinding of the steel wire rope 1 by rotating the handle 9, and locks the handle 9 through the self-locking assembly, which is convenient for opening the furnace door panel to clean the condensate.

[0027] It should be understood that the transmission shaft 7 has opposite first and second ends.

[0028] In this embodiment, the self-locking assembly includes a positioning sleeve 8, a first limiting sleeve 13, a second limiting sleeve, a ratchet ring 10, a limiting ratchet pawl assembly 14, a mounting cylinder 11, and a flexible friction sleeve 12;

[0029] The positioning sleeve 8 is coaxially fixed to the second end of the transmission shaft 7. The first limiting sleeve 13 is coaxially fixed to the end of the positioning sleeve 8 away from the winding box 3. The second limiting sleeve is coaxially fixed to the end of the positioning sleeve 8 close to the winding box 3;

[0030] The handle 9 includes a sleeve portion and a handle portion provided on the sleeve portion. The sleeve portion, the flexible friction sleeve 12, and the mounting cylinder 11 are sequentially sleeved on the positioning sleeve 8 along the direction from the first limiting sleeve 13 to the second limiting sleeve. The inner peripheral wall of the sleeve portion is provided with internal threads, and the outer thread of the positioning sleeve 8 is provided with external threads matching the internal threads, and the external threads are threadedly connected to the internal threads;

[0031] The ratchet ring 10 is coaxially fixed to one end of the mounting cylinder 11 close to the second limiting sleeve; the limiting ratchet pawl assembly 14 is installed on the winding box 3 on one side of the ratchet ring 10, and the limiting ratchet pawl assembly 14 is used to limit the rotation of the ratchet ring 10 when the steel wire rope 1 is unwound or has a tendency to unwind.

[0032] During specific use, when the handle 9 rotates clockwise, due to the existence of the furnace door panel, the steel wire rope 1, the first gear 5, the second gear 6, the transmission shaft 7, and the positioning sleeve 8 all remain stationary. The sleeve portion rotates relative to the positioning sleeve 8 and pushes the flexible friction sleeve 12 and the mounting cylinder 11 to move towards the second limiting sleeve until the sleeve portion, the flexible friction sleeve 12, the mounting cylinder 11, and the second limiting sleeve are sequentially in extrusion contact. When the handle portion continues to rotate clockwise, the handle 9 drives the flexible friction sleeve 12, the mounting cylinder 11, the second limiting sleeve, and the positioning sleeve 8 to rotate clockwise. The rotation of the positioning sleeve 8 drives the transmission shaft 7 and the second gear 6 to rotate, and the rotation of the second gear 6 drives the first gear 5 and the winding roller 4 to rotate, so that the steel wire rope 1 is wound and the furnace door panel is lifted through the pulley block 2 to open the furnace door;

[0033] After opening, due to the gravity of the furnace door panel, the steel wire rope 1 has a tendency to unwind, and the limiting ratchet pawl assembly 14 restricts the rotation of the ratchet ring 10 to keep the furnace door in the open state, facilitating the cleaning of condensate;

[0034] When the handle 9 rotates counterclockwise, due to the limiting ratchet pawl assembly 14 restricting the rotation of the ratchet ring 10, the positions of the flexible friction sleeve 12, the mounting cylinder 11, the second limiting sleeve, and the positioning sleeve 8 are fixed. The sleeve portion rotates relative to the positioning sleeve 8 and moves towards the first limiting sleeve 13, and the gaps between the flexible friction sleeve 12 and the mounting cylinder 11, and between the mounting cylinder 11 and the second limiting sleeve increase. When the flexible friction sleeve 12 and the mounting cylinder 11, and the mounting cylinder 11 and the second limiting sleeve are separated from the close contact state, the sleeve portion moves to the first limiting sleeve 13 and abuts against the first positioning sleeve 8; when the handle portion continues to rotate counterclockwise, the handle portion drives the positioning sleeve 8 to rotate counterclockwise through the sleeve portion and the first limiting sleeve 13, the steel wire becomes slack and the furnace door panel is lowered through the pulley block 2 to close the furnace door panel.

[0035] In this embodiment, the second limiting sleeve is an umbrella-shaped structure integrally formed at one end of the positioning sleeve 8 close to the winding box 3. One end of the installation cylinder 11 close to the second limiting sleeve is provided with a first umbrella-shaped surface matching the umbrella-shaped structure. With such a setting, during the winding process of the steel wire rope 1, the contact area between the installation cylinder 11 and the second limiting sleeve can be increased, improving the transmission effect. When the steel wire is unwound, the first umbrella-shaped surface can rotate relative to the umbrella-shaped structure.

[0036] In order to increase the contact area between the friction plate and the installation sleeve to improve the transmission effect, in this embodiment, one end of the installation cylinder 11 away from the second limiting sleeve is provided with a second umbrella-shaped surface, and one end of the flexible friction sleeve 12 close to the installation cylinder 11 is provided with a third umbrella-shaped surface matching the second umbrella-shaped surface.

[0037] In a further embodiment, one end of the sleeve part close to the flexible friction sleeve 12 is provided with a fourth umbrella-shaped surface, and one end of the flexible friction sleeve 12 close to the sleeve part is provided with a fifth umbrella-shaped surface matching the third umbrella-shaped surface to increase the contact area between the friction plate and the sleeve part and improve the transmission effect.

[0038] In order to improve the transmission effect between the sleeve part and the first limiting sleeve 13, in this embodiment, one end of the first limiting sleeve 13 close to the sleeve part is provided with a first wedge-shaped surface, and one end of the sleeve part close to the first limiting sleeve 13 is provided with a second wedge-shaped surface matching the first wedge-shaped surface.

[0039] In this embodiment, the limiting pawl member includes a rotating shaft, a pawl member and a torsion spring. The rotating shaft is rotatably arranged on the winding box 3 on one side of the ratchet ring 10, the pawl member is rotatably arranged on the rotating shaft, and the torsion spring is connected between the pawl member and the winding box 3, so that the pawl of the pawl member and the ratchet of the ratchet ring 10 maintain one-way engagement when the steel wire rope 1 is unwound or has a tendency to unwind, so as to limit the rotation of the ratchet ring 10.

[0040] When this embodiment is specifically implemented, when the ratchet ring 10 rotates clockwise, the pawl of the pawl member slips relative to the ratchet of the ratchet ring 10; when the ratchet ring 10 rotates counterclockwise, the pawl of the pawl member and the ratchet of the ratchet ring 10 maintain one-way engagement.

[0041] In this embodiment, the first limiting sleeve 13 is fixed to the positioning sleeve 8 in a detachable manner.

[0042] In one specific embodiment, the first limiting sleeve 13 is fixed to the positioning sleeve 8 by bolts.

[0043] In order to improve the stability of the fixation of the first limiting sleeve 13 and the positioning sleeve 8, in a further embodiment, an internal thread is provided on the inner peripheral wall of the first limiting sleeve 13, and an external thread matching the internal thread of the first limiting sleeve 13 is provided on the positioning sleeve 8.

[0044] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A lifting device for closing the cover of a flue device, characterized in that, it includes: a lifting mechanism and a manual winding mechanism; The lifting mechanism includes a pulley block and a steel wire rope (1). The pulley block (2) is used to be arranged above the furnace door. One end of the steel wire rope (1) is fixedly connected to the top of the furnace door, and the other end bypasses the pulley block (2) and is fixedly connected to the manual winding mechanism; The manual winding mechanism includes a transmission shaft (7), a second gear (6), a first gear (5), a winding roller (4) and a winding box (3). The winding roller (4) is rotatably arranged in the winding box (3). The first gear (5) is coaxially fixed to one end of the winding roller (4). The second gear (6) is rotatably arranged in the winding box (3), and the second gear (6) is meshed and connected with the first gear (5). The first end of the transmission shaft (7) is fixedly connected to the middle of the second gear (6). The second end of the transmission shaft (7) extends out of the winding box (3) and is fixedly connected to the handle (9). A self-locking component is arranged on the handle (9); The self-locking component includes a positioning sleeve (8), a ratchet ring (10), a mounting cylinder (11), a flexible friction sleeve (12), a first limiting sleeve (13), a second limiting sleeve and a limiting ratchet component (14); The positioning sleeve (8) is coaxially fixed to the second end of the transmission shaft (7). The first limiting sleeve (13) is coaxially fixed to the end of the positioning sleeve (8) far from the winding box (3). The second limiting sleeve is coaxially fixed to the end of the positioning sleeve (8) close to the winding box (3); The handle (9) includes a sleeve part and a handle part arranged on the sleeve part. The sleeve part, the flexible friction sleeve (12) and the mounting cylinder (11) are sequentially sleeved on the positioning sleeve (8) along the direction from the first limiting sleeve (13) to the second limiting sleeve. The inner peripheral wall of the sleeve part is provided with internal threads. The outer thread of the positioning sleeve (8) is provided with external threads matching the internal threads, and the external threads are threadedly connected with the internal threads; The ratchet ring (10) is coaxially fixed to the end of the mounting cylinder (11) close to the second limiting sleeve. The limiting ratchet component (14) is installed on the winding box (3) on one side of the ratchet ring (10). The limiting ratchet component (14) is used to limit the rotation of the ratchet ring (10) when the steel wire rope (1) is unwound or has a tendency to unwind.

2. The lifting device for closing the cover of a flue device according to claim 1, characterized in that, The second limiting sleeve is an umbrella-shaped structure integrally formed at the end of the positioning sleeve (8) close to the winding box (3). The end of the mounting cylinder (11) close to the second limiting sleeve is provided with a first umbrella-shaped surface matching the umbrella-shaped structure.

3. The lifting device for closing the cover of a flue device according to claim 2, characterized in that, The end of the mounting cylinder (11) far from the second limiting sleeve is provided with a second umbrella-shaped surface. The end of the flexible friction sleeve (12) close to the mounting cylinder (11) is provided with a third umbrella-shaped surface matching the second umbrella-shaped surface.

4. The lifting device for closing the cover of a flue device according to claim 3, characterized in that, The end of the sleeve part close to the flexible friction sleeve (12) is provided with a fourth umbrella-shaped surface. The end of the flexible friction sleeve (12) close to the sleeve part is provided with a fifth umbrella-shaped surface matching the third umbrella-shaped surface.

5. The lifting device for closing the cover of the flue gas duct equipment according to claim 4, characterized in that, a first wedge surface is provided at one end of the first limiting sleeve (13) close to the sleeve part, and a second wedge surface matching the first wedge surface is provided at one end of the sleeve part close to the first limiting sleeve (13).

6. The lifting device for closing the cover of the flue gas duct equipment according to any one of claims 1-5, characterized in that, the limiting pawl member includes a rotating shaft, a pawl member and a torsion spring. The rotating shaft is rotatably arranged on the winding box (3) on one side of the ratchet ring (10), the pawl member is rotatably arranged on the rotating shaft, and the torsion spring is connected between the pawl member and the winding box (3) so that the pawl of the pawl member and the ratchet teeth of the ratchet ring (10) maintain one-way engagement when the steel wire rope (1) is unwound or has a tendency to be unwound.

7. The lifting device for closing the cover of the flue gas duct equipment according to claim 1, characterized in that, the first limiting sleeve (13) is fixed to the positioning sleeve (8) in a detachable manner.

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