Large-span steel lifting door lifting mechanism of sound insulation room

Abstract

The utility model discloses a large-span steel lifting door lifting mechanism of a sound insulation room and relates to the technical field of lifting doors. The lifting mechanism is fixedly installed on a double-output gear motor in the middle of the top end of the workpiece inlet and outlet, the output axis of the double-output gear motor is arranged in the left-right direction, and the two output ends of the double-output gear motor are connected with chain wheels through universal couplings respectively. And the chain wheel is meshed with a chain which bypasses the chain wheel, one end of the chain is connected with the top of the steel door plate, and the other end of the chain is connected with a balancing weight. The double-output-shaft gear motor drives the chain wheels symmetrically arranged on the two sides to drive the steel door plate to ascend and descend, operation is more stable compared with the prior art, and the steel door plate is prevented from inclining up and down.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting doors, and particularly to a lifting mechanism for a large-span steel lifting door of a sound insulation room. Background Art

[0002] The publication number CN219412250U discloses an anti-falling mechanism for a lifting door of a sound insulation room. A lifting hanging part is slidably penetrated through the middle of the top end of a door frame. Usually, an electric hoist is used to pull the lifting hanging part in the middle of the top end of the door frame to realize the lifting action. When the door is relatively wide and the span is large, the frictional resistance on both sides between the door and the column track is unbalanced, which easily causes the upper and lower inclinations of both sides of the door panel, resulting in jamming and affecting the safe and normal operation. Content of the Utility Model

[0003] The purpose of the utility model is to provide a lifting mechanism for a large-span steel lifting door of a sound insulation room, which can effectively solve the problems in the background art.

[0004] The technical solution to achieve the above purpose is: a lifting mechanism for a large-span steel lifting door of a sound insulation room. The lifting mechanism of the lifting door is installed at the top of the workpiece inlet and outlet of the sound insulation room. Lifting door tracks are arranged on both side walls of the workpiece inlet and outlet. A steel door panel is slidably arranged up and down between the lifting door tracks. It is characterized in that: the lifting mechanism is fixedly installed with a double-output reduction motor in the middle of the top end of the workpiece inlet and outlet. The output axis of the double-output reduction motor is arranged in the left-right direction. Two output ends of the double-output reduction motor are respectively connected with a sprocket through a universal coupling. The sprockets are simultaneously rotatably installed at the top of the sound insulation workpiece inlet and outlet through sprocket seats. A chain bypassing the sprockets is meshed on the sprockets. One end of the chain is connected to the top of the steel door panel, and the other end is connected with a counterweight.

[0005] Furthermore, a differential anti-falling device is also connected between the workpiece inlet and outlet and the steel door panel.

[0006] Furthermore, the sprockets are double-row sprockets, and the chain is a double-row roller chain matched with the double-row sprockets.

[0007] Furthermore, the double-output reduction motor is a motor with a brake.

[0008] Furthermore, the lifting door tracks are rectangular, and open slots are arranged on the opposite sides. Bearings are rotatably installed in the open slots. A fixed shaft is fixed at the center of the bearing. The outer end of the fixed shaft is installed on the steel door panel through an L-shaped connecting seat.

[0009] Furthermore, the bearing is a single-side flanged roller bearing, and the flange of the single-side flanged roller bearing is located outside the lifting door track and is in limit fit with the inner side surface of the lifting door track.

[0010] Further, the connection position of the chain on the left side with the steel door panel is at the midpoint between the left side edge and the center line of the steel door panel, and the connection position of the chain on the right side with the steel door panel is at the midpoint between the right side edge and the center line of the steel door panel.

[0011] Advantages of the present utility model: The present utility model uses a double-output shaft reduction motor to drive the steel door panel to lift by driving sprockets symmetrically arranged on both sides, and runs more smoothly than the prior art, avoiding the up and down inclination of the steel door panel.

[0012] In the present utility model, the single-side flanged roller rotates and cooperates in the opening groove of the lifting door track, and the cooperation between the single-side flanged roller and the lifting door track can further avoid the inclination of the steel door panel.

[0013] The present utility model uses a double-output shaft reduction motor to drive the sprockets on both sides to rotate through a universal coupling. One end of the double-row roller chain is connected to the lifting part, and the other end is connected with a counterweight block after bypassing the sprocket, so that the chain is always kept in a tensioned state to prevent shaking and tooth disengagement. The motor uses a braking type to ensure the position locking when the lifting door hovers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is Figure 1 a partial enlarged view of part A in

[0016] Figure 3 is Figure 1 a partial enlarged view of part B in

[0017] Figure 4 is Figure 1 a partial enlarged view of part C in

[0018] Figure 5 is a partial schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] As Figures 1-5As shown in the figure, the present utility model discloses a lifting mechanism for a large-span steel lifting door of a soundproof room. The lifting door lifting mechanism 4 is installed at the top of the workpiece inlet / outlet 1.1 of the soundproof room 1. Lifting door tracks 2 are provided on the left and right side walls of the workpiece inlet / outlet 1.1. A steel door panel 3 is slidably arranged up and down between the lifting door tracks 2. The lifting door tracks 2 are rectangular, and open slots 2.1 are provided on the opposite sides. Bearings 5 are rotatably installed in the open slots 2.1. A fixed shaft 6 is fixed at the center of the bearing 5. The outer end of the fixed shaft 6 is installed on the back of the steel door panel 3 through an L-shaped connecting seat 7. Further, the bearing 5 is a single-sided flanged roller bearing, and the flange of the bearing 5 is arranged outside the lifting door track 2 and is in limit fit with the inner side surface of the lifting door track 2, which can effectively prevent the steel door panel 3 from tilting up and down during the lifting process.

[0020] The lifting mechanism 4 includes a double-output reduction motor 4.1 fixed at the middle of the top end of the workpiece inlet / outlet 1.1. The double-output reduction motor 4.1 is a motor with a brake. The two output ends of the double-output reduction motor 4.1 are respectively connected with double-row sprockets 4.5 through universal couplings 4.2. The double-row sprockets 4.5 are rotatably installed at the top of the soundproof workpiece inlet / outlet 1.1 through sprocket seats 4.6 at the same time. A double-row roller chain 4.7 that bypasses the double-row sprockets 4.5 is meshed on the double-row sprockets 4.5. One end of the double-row roller chain 4.7 is connected to the top of the steel door panel 3, and the other end is connected with a counterweight 4.8.

[0021] As a further illustration of this embodiment, to improve the overall stability, the connection position between the left double-row sprocket 4.5 and the steel door panel 3 is located at the midpoint between the left side edge and the center line of the steel door panel 3, and the connection position between the right double-row sprocket 4.5 and the steel door panel 3 is located at the midpoint between the right side edge and the center line of the steel door panel 3.

[0022] As a further illustration of this embodiment, to prevent the steel door panel 3 from falling rapidly, two symmetrically arranged differential anti-falling devices 8 are also connected between the two sides of the top of the steel door panel 3 and the top end of the workpiece inlet / outlet.

[0023] When the present utility model works, the double-output reduction motor 4.1 drives the universal coupling 4.2 to rotate. The universal coupling 4.2 drives the double-row sprockets 4.5 on both sides to rotate synchronously. The double-row sprockets 4.5 drive the steel door panel 3 to lift through the double-row roller chain 4.7, realizing the opening and closing of the steel door panel 3.

Claims

1. The lifting mechanism of the large-span steel lifting door for the soundproof room. The lifting mechanism of the lifting door is installed at the top of the workpiece inlet and outlet of the soundproof room. Lifting door tracks are provided on both side walls of the workpiece inlet and outlet. A steel door panel is slidably arranged up and down between the lifting door tracks. It is characterized in that: The lifting mechanism is fixedly installed with a double-output reduction motor at the middle part of the top of the workpiece inlet and outlet. The output axis of the double-output reduction motor is arranged in the left-right direction. Two output ends of the double-output reduction motor are respectively connected with sprockets through universal couplings. The sprockets are rotatably installed on the top of the sound-insulating workpiece inlet and outlet through sprocket seats at the same time. A chain bypassing the sprockets is meshed on the sprockets. One end of the chain is connected with the top of the steel door panel, and the other end is connected with a counterweight.

2. The lifting mechanism of the large-span steel lifting door of the sound insulation room according to claim 1, wherein: A differential anti-falling device is also connected between the workpiece inlet and outlet and the steel door panel.

3. The lifting mechanism of the large-span steel lifting door of the soundproof room according to claim 1, characterized in that: The sprocket is a double-row sprocket, and the chain is a double-row roller chain matching with the double-row sprocket.

4. The lifting mechanism of the large-span steel lifting door of the sound insulation room according to claim 1, characterized in that: The double-output reduction motor is a motor with a brake.

5. The lifting mechanism of the large-span steel lifting door of the soundproof room according to claim 1, characterized in that: The lifting door track is rectangular, and opening grooves are arranged on opposite sides. Bearings are rotatably installed in the opening grooves. A fixed shaft is fixed at the center of the bearings. The outer end of the fixed shaft is installed on the steel door panel through an L-shaped connecting seat.

6. The lifting mechanism of the large-span steel lifting door of the soundproof room according to claim 5, wherein: The bearing is a single-sided flanged roller bearing. The flange of the single-sided flanged roller bearing is located outside the lifting door track and is in limit fit with the inner side surface of the lifting door track.

7. The lifting mechanism of the large-span steel lifting door of the soundproof room according to claim 1, characterized in that: The connection position of the left-side chain and the steel door panel is at the midpoint between the left side edge and the center line of the steel door panel. The connection position of the right-side chain and the steel door panel is at the midpoint between the right side edge and the center line of the steel door panel.

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