Anti-squeezing electric door protection device

Abstract

The utility model relates to an anti-squeezing electric door protection device, and belongs to the technical field of mine ventilation. Comprising oppositely-opened door leaves which are arranged in an inclined mode, a driving device is installed in the space of the upper end of each door leaf, the output end of each driving device is connected with a lead screw, the lead screws drive matched sliding blocks, the sliding blocks are hinged to one ends of connecting rods, the other ends of the connecting rods are hinged to the door leaves, matched guiding bases are installed at the lower ends of the sliding blocks, and buffering mechanisms are installed on the connecting rods. According to the anti-squeezing electric door protection device, a buffering mechanism is additionally arranged, and rigid impact on a transmission piece is reduced.

Description

Technical Field

[0001] The utility model relates to an anti-squeezing electric door protection device, belonging to the technical field of mine ventilation. Background Art

[0002] In a forced ventilation mine, it is necessary to install dampers in the main air intake tunnel of the mine. Damper is currently widely used in mines.

[0003] The existing Chinese utility model patent with publication number CN219412650U includes two dampers arranged at an angle, which form an angle β when the two dampers are closed, and the angle β is 80° to 160°. One end of the damper is hinged on the fixed columns on both sides of the mine tunnel, and a start-and-stop device is arranged on the upper part of the damper. The damper is arranged at an angle, and the start-and-stop device includes a support plate, a power device is fixed on the upper part of the support plate, a lead screw is arranged at the output end of the power device, a matching slider is arranged on the lead screw, and a matching slide rail is arranged at the bottom of the slider, and connecting rods are respectively hinged at both ends of the slider, and the end of the connecting rod away from the slider is hinged at the top of the damper.

[0004] In the process of implementing the technical solution of this application, the inventor discovered that there are at least the following technical problems in the prior art:

[0005] During use, it was found that the wind in the mine acted on the door. During the motor startup process, the rigid impact of the lead screw and slider was too large, which was easy to cause damage and required regular replacement. Utility Model Content

[0006] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide an anti-squeezing electric door protection device, to add a buffer mechanism, and to reduce the rigid impact on the transmission parts.

[0007] The anti-squeezing electric door protection device described in the utility model comprises a tilted double-opening door leaf, a driving device is installed in the upper space of the door leaf, a lead screw is connected to the output end of the driving device, a corresponding slider is driven by the lead screw, one end of a connecting rod is hinged on the slider, the other end of the connecting rod is hinged on the door leaf, a corresponding guide seat is installed at the lower end of the slider, and a buffer mechanism is installed on the connecting rod.

[0008] Furthermore, the buffer mechanism comprises a sleeve, the interior of the sleeve is slidably connected to the push rod, an elastic member is sleeved on the outside of the push rod, and the elastic member is fixed on the push rod and the sleeve.

[0009] Furthermore, the elastic member is a compression spring.

[0010] Furthermore, the elastic member is installed in the middle of the connecting rod.

[0011] Furthermore, a positioning ring I is fixed on the push rod, a positioning ring II is installed on the sleeve, and compression springs are fixed on the opposite surfaces of the positioning ring I and the positioning ring II.

[0012] Furthermore, the buffer mechanism is a buffer telescopic cylinder installed on the connecting rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model reduces the rigid impact on the transmission parts (such as the lead screw and the sliding block) by adding a buffer mechanism, thereby increasing the service life thereof and reducing the frequency of maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0016] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0017] Figure 3 It is a structural schematic diagram of Embodiment 2 of the present utility model;

[0018] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0019] In the figure:

[0020] 1. Driving device; 2. Sliding block; 3. Lead screw; 4. Connecting rod; 41. Sleeve; 411. Positioning ring II; 42. Elastic member; 43. Push rod; 431. Positioning ring I; 44. Buffer telescopic cylinder; 5. Door leaf; 6. Guide seat. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1 to Figure 4 As shown, the anti-squeezing electric door protection device described in the utility model includes a tilted double-opening door leaf 5, a driving device 1 is installed in the upper space of the door leaf 5, the output end of the driving device 1 is connected to a screw 3, the driving device 1 includes a motor and a reduction box, the motor is connected to the reduction box, the output end of the reduction box is connected to the screw 3, the screw 3 drives a corresponding slider 2, one end of the connecting rod 4 is hinged on the slider 2, the other end of the connecting rod 4 is hinged on the door leaf 5, a corresponding guide seat 6 is installed at the lower end of the slider 2, and a buffer mechanism is installed on the connecting rod 4.

[0023] The buffer mechanism includes a sleeve 41 , the interior of the sleeve 41 is slidably connected to a push rod 43 , an elastic member 42 is sleeved on the outside of the push rod 43 , and the elastic member 42 is fixed on the push rod 43 and the sleeve 41 .

[0024] The elastic member 42 is a compression spring, and the compression ratio of the compression spring is selected to be 32-40% to ensure that the compression spring does not lose its elasticity under the pressure of mine wind.

[0025] The elastic member 42 is installed in the middle of the connecting rod 4 .

[0026] A positioning ring I 431 is fixed on the push rod 43 , a positioning ring II 411 is installed on the sleeve 41 , and compression springs are fixed on the opposite surfaces of the positioning ring I 431 and the positioning ring II 411 .

[0027] Working process or working principle:

[0028] By compressing the spring, the rigid impact of the lead screw and the slider is reduced during the motor starting process. When the motor starts and the slider moves, the compression spring will be compressed first, thereby converting the rigid impact into a more moderate force, thereby extending the service life of the lead screw and the slider.

[0029] Example 2

[0030] The difference from Example 1 is:

[0031] The buffer mechanism is a buffer telescopic cylinder 44 installed on the connecting rod 4. The buffer telescopic cylinder for door leaf installation is a device used to install door leaves. Its main feature is that it has buffering and telescopic functions during the installation process. It can effectively absorb and reduce the impact force and vibration generated by the door leaf during the installation process, protect the door leaf from damage, and also reduce the noise generated during the installation. The buffer telescopic cylinder for door leaf installation is usually composed of a cylinder body, a piston rod, a buffer sleeve, a sealing ring, etc. Its working principle is to adjust the height and position of the door leaf through the telescopic movement of the piston rod when installing the door leaf, and use components such as the buffer sleeve and the sealing ring to absorb the impact force and vibration and reduce noise. The buffer telescopic cylinder 44 is an existing telescopic cylinder and will not be introduced in detail.

[0032] Working process or working principle:

[0033] When the door leaf is opened and needs to be closed, the buffer telescopic cylinder 44 is first retracted, and the door leaf is slowly closed under the action of wind pressure, thereby reducing the damage of the wind pressure to the lead screw and the slider during the closing process.

[0034] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. An anti-squeezing electric door protection device, comprising a tilted double-leaf door leaf (5), a driving device (1) is installed in the upper space of the door leaf (5), the output end of the driving device (1) is connected to a lead screw (3), the lead screw (3) drives a matching slider (2), one end of a connecting rod (4) is hinged on the slider (2), the other end of the connecting rod (4) is hinged on the door leaf (5), and a matching guide seat (6) is installed at the lower end of the slider (2), characterized in that: A buffer mechanism is installed on the connecting rod (4).

2. The anti-pinch electric door protection device according to claim 1, characterized in that: The buffer mechanism comprises a sleeve (41), the interior of the sleeve (41) is slidably connected to a push rod (43), an elastic member (42) is sleeved on the exterior of the push rod (43), and the elastic member (42) is fixed on the push rod (43) and the sleeve (41).

3. The anti-pinch electric door protection device according to claim 2, characterized in that: The elastic member (42) is a compression spring.

4. The anti-pinch electric door protection device according to claim 3, characterized in that: The elastic member (42) is installed in the middle of the connecting rod (4).

5. The anti-squeezing electric door protection device according to claim 3 or 4, characterized in that: A positioning ring I (431) is fixed on the push rod (43), a positioning ring II (411) is installed on the sleeve (41), and compression springs are fixed on the opposite surfaces of the positioning ring I (431) and the positioning ring II (411).

6. The anti-pinch electric door protection device according to claim 1, characterized in that: The buffer mechanism is a buffer telescopic cylinder (44) installed on the connecting rod (4).

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