Shaft explosion-proof cover locking device

Abstract

The utility model discloses a locking device for a vertical shaft explosion-proof cover, comprising: a corner cylinder, an abutment plate hinged with the pressure arm and used to abut the explosion-proof cover and then rotate to fit the explosion-proof cover, an elastic member fixed with the pressure arm and used to drive the abutment plate to maintain a horizontal posture, a first support rod fixed with the pressure arm and used to abut the abutment plate after rotation, a second support rod fixed with the pressure arm and used to abut the abutment plate in a horizontal posture, and a hydraulic system. In this solution, the abutment plate is driven by the corner cylinder to rotate from one side of the explosion-proof cover to the top of the explosion-proof cover, and the abutment plate abuts the explosion-proof cover and deflects during the downward movement, until the abutment plate abuts the first support rod after being attached to the explosion-proof cover, thereby achieving compression of the explosion-proof cover; wherein, the second support rod reduces the possibility that the abutment plate cannot fit the explosion-proof cover due to reverse deflection, and the elastic member can enhance the compression and fixing effect, and is suitable for explosion-proof covers of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of mine ventilation, in particular to a locking device for a vertical shaft explosion-proof cover. Background Art

[0002] When the main ventilation fan in a coal mine is in reverse and reverse operation, the explosion-proof cover needs to be manually pressed down to prevent the explosion-proof cover from automatically opening due to the loss of negative pressure under the action of the counterweight block due to a brief stop in ventilation, thereby causing the loss of the sealing effect and causing a mine ventilation accident. Utility Model Content

[0003] In view of this, the utility model provides a locking device for a vertical shaft explosion-proof cover, which can drive the abutment plate to rotate from one side of the explosion-proof cover to the top of the explosion-proof cover through a corner cylinder, and the abutment plate abuts against the explosion-proof cover and deflects during the downward movement until the abutment plate is attached to the explosion-proof cover and abuts against the first support rod, thereby achieving the compression of the explosion-proof cover; wherein the second support rod reduces the possibility of the abutment plate deflecting in the opposite direction and causing it to fail to fit the explosion-proof cover, and the elastic member can enhance the compression and fixing effect and adapt to explosion-proof covers of different specifications.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A locking device for a vertical shaft explosion-proof cover, comprising:

[0006] A corner cylinder is fixed to one side of the edge of the explosion-proof cover, and a pressure arm of the corner cylinder can rotate to the top of the explosion-proof cover along with the piston rod of the corner cylinder, and abut against the explosion-proof cover along with the contraction of the piston rod;

[0007] An abutment assembly, comprising an abutment plate hinged to the pressure arm and used to abut against the explosion-proof cover and then rotate to fit the explosion-proof cover, an elastic member fixed to the pressure arm and used to drive the abutment plate to maintain a horizontal posture, a first support rod fixed to the pressure arm and used to abut against the abutment plate after rotation, and a second support rod fixed to the pressure arm and used to abut against the abutment plate in a horizontal posture, the edge of the explosion-proof cover abuts between the second support rod and the rotation axis of the abutment plate;

[0008] The hydraulic system is used to drive the piston rod to retract when the ventilator in the vertical shaft is in reverse operation, and to drive the piston rod to extend when the ventilator stops reversing.

[0009] Preferably, the abutment assembly further comprises a connecting rod fixed to the pressure arm and used for hingedly connecting the abutment plate, and there are at least two second support rods, and two second support rods are spaced apart and distributed on both sides of the connecting rod.

[0010] Preferably, the abutment assembly further comprises a connecting rod fixed to the pressure arm and used for hingedly connecting the abutment plate, and there are at least two first support rods, and the two first support rods are spaced apart and distributed on both sides of the connecting rod.

[0011] Preferably, the elastic member comprises a spring.

[0012] Preferably, the first support rod is located between the spring and the connecting rod.

[0013] Preferably, the connecting rod is threadedly connected to the pressure arm, and the connecting rod passes through the pressure arm and is threadedly connected with a nut for abutting against the pressure arm.

[0014] Preferably, the bottom end of the connecting rod is configured with a reduced diameter to form an abutment portion for always abutting against the abutment plate when the abutment plate is within the first deflection angle range, and the bottom edge profile of the abutment portion is parabolic.

[0015] Preferably, the abutment plate has a rubber pad for abutting against the explosion-proof cover.

[0016] It can be seen from the above technical scheme that the vertical shaft explosion-proof cover locking device provided by the utility model drives the abutment plate to rotate from one side of the explosion-proof cover to the top of the explosion-proof cover through the corner cylinder, and the abutment plate abuts against the explosion-proof cover and deflects during the downward movement until the abutment plate is attached to the explosion-proof cover and abuts against the first support rod, thereby achieving the compression of the explosion-proof cover; wherein, the second support rod reduces the possibility of the abutment plate deflecting in the opposite direction and causing it to fail to fit the explosion-proof cover, and the elastic member can enhance the compression and fixing effect and adapt to explosion-proof covers of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a schematic diagram showing the structure of a locking device for a vertical shaft explosion-proof cover according to an exemplary embodiment;

[0019] Figure 2 is a schematic diagram showing a spring position according to an exemplary embodiment;

[0020] Figure 3 According to an exemplary embodiment, Figure 2 The middle is an enlarged view of part A showing the structure of the abutment part.

[0021] Reference numerals:

[0022] 1. Angle cylinder; 11. Piston rod; 12. Pressure arm; 2. Abutment assembly; 21. Abutment plate; 22. Elastic member; 221. Spring; 23. First support rod; 24. Connecting rod; 25. Second support rod; 3. Support plate; 4. Shaft; 5. Explosion-proof cover; 6. Rubber pad. DETAILED DESCRIPTION

[0023] The utility model discloses a locking device for a vertical shaft explosion-proof cover, which can drive an abutment plate to rotate from one side of the explosion-proof cover to the top of the explosion-proof cover through a corner cylinder, and the abutment plate abuts against the explosion-proof cover and deflects during the downward movement until the abutment plate abuts against the first support rod after being attached to the explosion-proof cover, thereby pressing the explosion-proof cover; wherein the second support rod reduces the possibility of the abutment plate being unable to fit the explosion-proof cover due to reverse deflection, and the elastic member can enhance the pressing and fixing effect, and is adaptable to explosion-proof covers of different specifications.

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In an exemplary embodiment of the present disclosure, a vertical shaft explosion-proof cover locking device is provided, such as Figure 1 As shown, Figure 1 is a schematic diagram showing the structure of a locking device for a vertical shaft explosion-proof cover according to an exemplary embodiment; Figure 2 is a schematic diagram showing a spring position according to an exemplary embodiment; Figure 3 According to an exemplary embodiment, Figure 2 The middle is an enlarged view of the A part showing the structure of the abutment part. Figures 1 to 3 Provide explanation.

[0026] Some specific implementation modes described below are intended to facilitate those skilled in the art to understand the present embodiment, and the present embodiment is not limited to some specific implementation modes described below.

[0027] Reference Figure 1 and Figure 2 An exemplary embodiment of the present disclosure provides a shaft explosion-proof cover locking device, the shaft explosion-proof cover locking device comprising:

[0028] The corner cylinder 1 is fixed to one side of the edge of the explosion-proof cover 5. The pressure arm 12 of the corner cylinder 1 can rotate to the top of the explosion-proof cover 5 along with the piston rod 11 of the corner cylinder 1, and abut against the explosion-proof cover 5 along with the contraction of the piston rod 11;

[0029] The abutment assembly 2 includes an abutment plate 21 hingedly connected to the pressure arm 12 and used to abut against the explosion-proof cover 5 and then rotate to fit the explosion-proof cover 5, an elastic member 22 fixed to the pressure arm 12 and used to drive the abutment plate 21 to maintain a horizontal posture, a first support rod 23 fixed to the pressure arm 12 and used to abut against the abutment plate 21 attached to the explosion-proof cover 5, and a second support rod 25 fixed to the pressure arm 12 and used to abut against the abutment plate 21 in a horizontal posture, and the edge of the explosion-proof cover 5 abuts between the second support rod 25 and the rotation axis of the abutment plate 21;

[0030] The hydraulic system is used to drive the piston rod 11 to retract when the ventilator in the vertical shaft is in reverse operation, and to drive the piston rod 11 to extend when the reverse wind system is shut down.

[0031] For example, refer to Figure 1 and Figure 2 The corner cylinder 1 is fixed to the outer side of the edge of the explosion-proof cover 5. When the corner cylinder 1 is working, its piston rod 11 first rotates around a fixed axis and then extends vertically. The pressure arm 12 of the corner cylinder 1 is fixedly connected to the top of the piston rod 11 of the corner cylinder 1 and extends to one side of the corner cylinder 1 in a horizontal posture.

[0032] The abutment assembly 2 also includes a connecting rod 24 fixed to the pressure arm 12 and used for hingedly connecting the abutment plate 21. The rotation axis of the abutment plate 21 is horizontally arranged and perpendicular to the extension direction of the pressure edge. The connecting rod 24 is vertically arranged and threadedly connected to the pressure arm 12. The top end of the connecting rod 24 passes through the pressure arm 12 and extends to above the pressure arm 12. The solid part of the connecting rod 24 extending above the pressure arm 12 is threadedly connected with a nut for abutting the pressure arm 12. By tightening the nut, the connecting rod 24 can be fixed in the current position, reducing the possibility of the abutment plate 21 rotating and then driving the connecting rod 24 to rotate, resulting in the possibility of the connecting rod 24 changing in height.

[0033] There are two first support rods 23 and both extend vertically away from the pressure arm 12. The two first support rods 23 are spaced apart on two opposite sides of the bottom surface of the pressure arm 12. There are two second support rods 25 and both extend vertically away from the pressure arm 12. The two second support rods 25 are spaced apart on two opposite sides of the bottom surface of the pressure arm 12. The first support rod 23 and the second support rod 25 are respectively arranged on both sides of the connecting rod 24.

[0034] The elastic member 22 includes a spring 221, the top end of the spring 221 is fixedly connected to the end of the pressure arm 12 away from the corner cylinder 1, the bottom end of the spring 221 is fixedly connected to the end of the abutment plate 21 away from the corner cylinder 1, the first support rod 23 is located between the spring 221 and the connecting rod 24, the spring 221 is located in the area between the two first support rods 23, when the spring 221 is in a natural state, the abutment plate 21 is in a horizontal posture, at this time the abutment plate 21 abuts against the bottom end of the second support rod 25; when the spring 221 is compressed to the maximum extent, the abutment plate 21 abuts against the bottom end of the first support rod 23.

[0035] The hydraulic system (not shown in the figure) is a hydraulic unit connected to and driving the corner cylinder 1, including a pump body, an oil tank, a pipeline, and a controller. The hydraulic system can be manually turned on or connected to the shaft ventilator signal, such as an electrical connection or a wireless connection. The shaft ventilator reverse start signal is used as the start signal of the hydraulic system. When the shaft ventilator starts to reverse, the hydraulic system can control the corner cylinder 1 to work, so that the abutment plate 21 abuts against the explosion-proof cover 5. Similarly, the shaft ventilator reverse system shutdown signal is used as the hydraulic system shutdown signal, that is, when the ventilator reverses, the hydraulic system can automatically control the abutment plate 21 to separate from the explosion-proof cover 5.

[0036] The second support rod 25 reduces the possibility that the abutment plate 21 cannot fit the explosion-proof cover 5 due to the reverse deflection, and the elastic member 22 can enhance the pressing and fixing effect, and can adapt to explosion-proof covers 5 of different specifications.

[0037] In an exemplary embodiment of the present disclosure, referring to Figure 1 The abutment plate 21 is fixedly connected with two support plates 3 in a vertical posture and spaced apart, and the support plates 3 are parallel to the extension direction of the pressure arm 12. A horizontal shaft 4 is fixedly connected between the two support plates 3, and the shaft 4 is perpendicular to the extension direction of the pressure arm 12. The bottom end of the connecting rod 24 extends between the two support plates 3 and is penetrated by the shaft 4. The abutment plate 21 deflects with the shaft 4 as the rotation axis.

[0038] In an exemplary embodiment of the present disclosure, referring to Figure 1 The bottom end of the connecting rod 24 is reduced in diameter to form an abutting portion that is always in abutment with the abutting plate 21 when the abutting plate 21 is within the first deflection angle range, and the bottom edge profile of the abutting portion is parabolic. The abutting portion that is always in abutment with the abutting plate 21 can exert a supporting force on the abutting plate 21, thereby reducing the pressure exerted by the abutting plate 21 abutting on the explosion-proof cover 5 on the shaft body 4, and reducing the possibility of bending failure of the shaft body 4.

[0039] In this embodiment, the first deflection angle range is the interval from the horizontal position of the abutting plate to the position of abutting the first support rod. The bottom surface of the abutting plate 21 is bonded with a rubber pad 6 for abutting the explosion-proof cover 5 and covering the bottom surface of the abutting plate 21.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A locking device for a shaft explosion-proof cover, characterized in that: include: A corner cylinder (1) is fixed to one side of the edge of the explosion-proof cover (5); the pressure arm (12) of the corner cylinder (1) can rotate to the top of the explosion-proof cover (5) along with the piston rod (11) of the corner cylinder (1), and abut against the explosion-proof cover (5) along with the contraction of the piston rod (11); The abutment assembly (2) comprises an abutment plate (21) hingedly connected to the pressure arm (12) and used to abut against the explosion-proof cover (5) and then rotate to fit the explosion-proof cover (5), an elastic member (22) fixed to the pressure arm (12) and used to drive the abutment plate (21) to maintain a horizontal posture, a first support rod (23) fixed to the pressure arm (12) and used to abut against the abutment plate (21) attached to the explosion-proof cover (5), and a second support rod (25) fixed to the pressure arm (12) and used to abut against the abutment plate (21) in a horizontal posture, wherein the edge of the explosion-proof cover (5) abuts between the second support rod (25) and the rotation axis of the abutment plate (21); A hydraulic system is used to drive the piston rod (11) to retract when the ventilator in the vertical shaft is in reverse operation, and to drive the piston rod (11) to extend when the ventilator stops reversing.

2. The vertical shaft explosion-proof cover locking device according to claim 1 is characterized in that: The abutment assembly (2) further comprises a connecting rod (24) fixed to the pressure arm (12) and used for hingedly connecting the abutment plate (21); there are at least two second support rods (25), and the two second support rods (25) are spaced apart and distributed on both sides of the connecting rod (24).

3. The vertical shaft explosion-proof cover locking device according to claim 1 is characterized in that: The abutment assembly (2) further comprises a connecting rod (24) fixed to the pressure arm (12) and used for hingedly connecting the abutment plate (21); there are at least two first support rods (23), and the two first support rods (23) are spaced apart and distributed on both sides of the connecting rod (24).

4. The vertical shaft explosion-proof cover locking device according to claim 3 is characterized in that: The elastic member (22) comprises a spring (221).

5. The vertical shaft explosion-proof cover locking device according to claim 4 is characterized in that: The first support rod (23) is located between the spring (221) and the connecting rod (24).

6. The vertical shaft explosion-proof cover locking device according to claim 3 is characterized in that: The connecting rod (24) is threadedly connected to the pressure arm (12); the connecting rod (24) passes through the pressure arm (12) and is threadedly connected to a nut for abutting against the pressure arm (12).

7. The vertical shaft explosion-proof cover locking device according to claim 2 or 3, characterized in that: The bottom end of the connecting rod (24) is configured with a reduced diameter to form an abutment portion for always abutting against the abutment plate (21) when the abutment plate (21) is within a first deflection angle range, and the bottom edge profile of the abutment portion is parabolic.

8. The vertical shaft explosion-proof cover locking device according to claim 1, characterized in that: The abutment plate (21) has a rubber pad (6) for abutting against the explosion-proof cover (5).

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