Anti-jamming civil air defense door hand wheel

Abstract

The utility model relates to the technical field of civil air defense equipment, in particular to an anti-jamming civil air defense door hand wheel which comprises a main shaft arranged on a civil air defense door, the end of the main shaft is connected with a connecting sleeve, spokes are radially distributed on the outer side of the connecting sleeve, the other ends of the spokes are connected with circular rings, and a dustproof sleeve capable of sliding along the axis of the connecting sleeve is arranged at the end of the connecting sleeve. According to the anti-jamming civil air defense door hand wheel, the connecting sleeve, the spring and the dustproof sleeve are arranged, the dustproof sleeve is squeezed by the spring to be away from the connecting sleeve, the squeezing force of the spring is used for guaranteeing the pressure of the contact face between the dustproof sleeve and a civil air defense door, the dustproof and damp-proof purposes are achieved, and corrosion and abrasion borne by the main shaft are reduced; therefore, the rotation smoothness of the main shaft is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of civil air defense equipment, and specifically to an anti-stuck civil air defense door hand wheel. Background Art

[0002] Civil air defense doors refer to doors used in buildings, places, parks, etc. to prevent illegal intrusion and protect the safety of personnel and property. They are usually made of concrete and steel. The size of civil air defense doors varies according to actual needs. The width is usually around 800mm to 2000mm and the height is 2000mm. Most of them are opened and closed by handwheels. As a combat readiness equipment, civil air defense doors must be kept in good condition for a long time under harsh conditions to ensure immediate activation.

[0003] The existing announcement number is CN221277492U, which is a hand wheel for civil air defense door. The ratchet, annular sleeve, a card plate and a handle are used in combination to achieve the purpose of opening the door, avoiding the problem that the wheel is damaged or the elderly or children are not strong enough to open the civil air defense door by themselves.

[0004] However, in actual use, it is still difficult to avoid being invaded by dust and moisture, and the rotation is jammed due to spindle wear, making it difficult to ensure the instant opening;

[0005] To this end, we propose a new anti-stuck human defense door handwheel to solve the problems of the above-mentioned device. Utility Model Content

[0006] In view of this, the purpose of the present application is to provide an anti-stuck human defense door handwheel to reduce the damage caused by dust and moisture to the main shaft and reduce the jamming that occurs when the main shaft rotates.

[0007] In order to solve the above technical problems, this application provides the following technical solutions:

[0008] A jam-proof civil air defense door handwheel comprises a main shaft arranged on the civil air defense door, a connecting sleeve is connected to the end of the main shaft, spokes are radially distributed on the outside of the connecting sleeve, a ring is connected to the other end of the spoke, a dust cover that can slide along its axis is arranged at the end of the connecting sleeve, a spring is arranged between the dust cover and the connecting sleeve, a cleaning block of sponge material is arranged at the edge of the inner ring of the dust cover, an extrusion piece is arranged in the middle of the inner ring of the dust cover, and a protrusion is arranged on the end face of the connecting sleeve.

[0009] Preferably, a groove is provided on the end surface of the connecting sleeve, the spring is embedded in the groove on the end surface of the connecting sleeve, and the dustproof sleeve is embedded in the opening position of the groove on the end surface of the connecting sleeve.

[0010] Preferably, the cleaning block is an annular structure, and the cleaning block is nested in the middle of the outer side of the main shaft, and the edge of the cleaning block is flush with the edge of the dust cover.

[0011] Preferably, the end face shape of the extrusion piece is the same as the end face shape of the cleaning block, and a groove is provided in the radial direction at one end of the extrusion piece away from the cleaning block.

[0012] Preferably, a groove is formed on the inner wall surface of the extrusion piece.

[0013] Preferably, the protrusion is a cone-shaped structure.

[0014] Preferably, a sealing ring is provided at the end of the dust cover.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] 1. This anti-stuck civil air defense door handwheel is provided with a connecting sleeve, a spring and a dust cover. The dust cover is squeezed by the spring and moves away from the connecting sleeve. The squeezing force of the spring is used to ensure the pressure of the contact surface between the dust cover and the civil air defense door, so as to achieve the purpose of dust and moisture prevention, reduce the corrosion and wear of the main shaft, and thus ensure the smooth rotation of the main shaft.

[0017] 2. Secondly, this anti-stuck human defense door handwheel is provided with protrusions, extrusions and cleaning blocks. The cleaning block is made of a sponge with numerous tiny pores, which has good adsorption properties and can adsorb dirt on the main shaft. It has a good cleaning effect and reduces the situation where impurities cause the main shaft to rotate poorly. Lubricating oil is applied to the cleaning block to reduce the damage of dust and moisture to the main shaft through the lubricating oil, and reduce the friction when the main shaft rotates, thereby achieving a good anti-stuck effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0019] Figure 1 This is a schematic diagram of the overall structure of an anti-stuck human defense door handwheel provided in this application;

[0020] Figure 2 It is a schematic diagram of the main shaft structure of an anti-stuck human defense door handwheel provided in this application;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of a dust cover of an anti-stuck human defense door handwheel provided in this application;

[0022] Figure 4It is a schematic diagram of the connection sleeve structure of a hand wheel for an anti-stuck human defense door provided in this application;

[0023] In the figure: main shaft 1, connecting sleeve 2, spoke 201, ring 202, protrusion 203, dust cover 3, cleaning block 301, extrusion piece 302, sealing ring 303, spring 4.

[0024] As shown in the figure, in order to clearly implement the structure of the embodiment of the present application, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present application to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 3 As shown, the embodiment of the present application provides an anti-stuck civil air defense door handwheel, comprising a main shaft 1 arranged on the civil air defense door, a connecting sleeve 2 is connected to the end of the main shaft 1, spokes 201 are radially distributed on the outside of the connecting sleeve 2, a ring 202 is connected to the other end of the spoke 201, a dust cover 3 that can slide along its axis is arranged at the end of the connecting sleeve 2, a spring 4 is arranged between the dust cover 3 and the connecting sleeve 2, a cleaning block 301 of sponge material is arranged at the edge of the inner ring of the dust cover 3, an extrusion piece 302 is arranged in the middle of the inner ring of the dust cover 3, and a protrusion 203 is arranged on the end surface of the connecting sleeve 2;

[0026] In actual use, the dust cover 3 is squeezed by the spring 4 and is away from the connecting sleeve 2. The squeezing force of the spring 4 is used to ensure the pressure of the contact surface between the dust cover 3 and the civil air defense door, so as to achieve the purpose of dust and moisture prevention, reduce the corrosion and wear of the main shaft 1, and ensure the smooth rotation of the main shaft 1.

[0027] The cleaning block 301 is made of a sponge with numerous fine pores, which has good adsorption performance and can adsorb dirt on the main shaft 1, has a good cleaning effect, and reduces the situation where the main shaft 1 rotates poorly due to impurities.

[0028] Lubricating oil can also be applied to the cleaning block 301. The lubricating oil can reduce the damage of dust and moisture to the main shaft 1 and reduce the friction when the main shaft 1 rotates, so as to achieve a good anti-jamming effect. When the connecting sleeve 2 is rotated, the protrusion 203 exerts pressure on the extrusion piece 302 during its movement to make it move. After the extrusion piece 302 is displaced, it squeezes the cleaning block 301, thereby ensuring that the main shaft 1 can be well lubricated when it rotates, and the loss of lubricating oil can be reduced when it is idle.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, a groove is provided on the end surface of the connecting sleeve 2, the spring 4 is embedded in the groove on the end surface of the connecting sleeve 2, and the dust cover 2 is embedded in the opening position of the groove on the end surface of the connecting sleeve 2;

[0030] The connection between the connecting sleeve 2 and the dustproof sleeve 3 is interlocked, with a large contact area, a long anti-penetration path, and a stable limiting effect. It can effectively resist the invasion of dust and moisture and has a good protective effect.

[0031] The cleaning block 301 is an annular structure, and is nested in the middle of the outer side of the main shaft 1 , and the edge of the cleaning block 301 is flush with the edge of the dust cover 3 ;

[0032] The annular cleaning block 301 has a comprehensive cleaning effect on the outer peripheral surface of the main shaft 1, and the cleaning block 301 can be close to the connection between the main shaft 1 and the main body of the civil defense door, thereby preventing impurities from entering the connection and causing jamming, and also ensuring that the lubricating oil can act on the connection between the main shaft 1 and the main body of the civil defense door in time.

[0033] The end surface shape of the extrusion piece 302 is the same as that of the cleaning block 301, and a groove is formed along the radial direction of the end of the extrusion piece 302 away from the cleaning block 301;

[0034] The extrusion piece 302 can fully squeeze the cleaning block 301, forcing the lubricating oil stored therein to flow toward the connection position between the main shaft 1 and the main ladder 2 of the civil air defense door, thereby ensuring the lubrication effect;

[0035] The grooves provided on the extrusion piece 302 can cooperate with the protrusions 203 to intermittently extrude the extrusion piece 302 during the rotation of the connecting sleeve 2, thereby ensuring that the lubricating oil is evenly distributed inside the cleaning block 301 and can be evenly extruded.

[0036] The inner wall surface of the extrusion piece 302 is provided with a groove;

[0037] The grooves formed on the extrusion piece 302 can be pre-filled with lubricating oil to ensure that the lubricating oil inside the cleaning block 301 is fully reserved.

[0038] The protrusion 203 is a cone-shaped structure;

[0039] The inclined wall portion of the protrusion 203 has a guiding property and can linearly pressurize the extrusion piece 302 to avoid a jam between the protrusion 203 and the extrusion piece 302 .

[0040] A sealing ring 303 is provided at the end of the dust cover 3;

[0041] The squeezing force of the spring 4 is further utilized to enable the sealing ring 303 to fit the surface of the civil air defense door, thereby improving the sealing effect.

Claims

1. A hand wheel for preventing stuck personnel defense door, characterized in that: The invention comprises a main shaft (1) arranged on a civil air defense door, wherein the end of the main shaft (1) is connected to a connecting sleeve (2), the outer side of the connecting sleeve (2) is radially distributed with spokes (201), the other end of the spokes (201) is connected to a ring (202), the end of the connecting sleeve (2) is provided with a dust cover (3) which can slide along its axis, a spring (4) is provided between the dust cover (3) and the connecting sleeve (2), a cleaning block (301) made of sponge material is provided on the inner edge of the dust cover (3), an extrusion piece (302) is provided in the middle of the inner ring of the dust cover (3), and a protrusion (203) is provided on the end face of the connecting sleeve (2).

2. The anti-stuck human defense door handwheel according to claim 1, characterized in that: The end surface of the connecting sleeve (2) is provided with a groove, the spring (4) is embedded in the groove of the end surface of the connecting sleeve (2), and the dust cover (3) is embedded in the opening position of the groove of the end surface of the connecting sleeve (2).

3. The anti-stuck human defense door handwheel according to claim 1, characterized in that: The cleaning block (301) is an annular structure, and is nested in the middle of the outer side of the main shaft (1). The edge of the cleaning block (301) is flush with the edge of the dust cover (3).

4. The anti-stuck human defense door handwheel according to claim 1, characterized in that: The end face shape of the extrusion piece (302) is the same as the end face shape of the cleaning block (301), and a groove is provided along the radial direction of one end of the extrusion piece (302) away from the cleaning block (301).

5. The anti-stuck human defense door hand wheel according to claim 1, characterized in that: The inner wall surface of the extrusion piece (302) is provided with a groove.

6. The anti-stuck human defense door hand wheel according to claim 1, characterized in that: The protrusion (203) is a cone-shaped structure.

7. The anti-stuck human defense door hand wheel according to claim 1, characterized in that: A sealing ring (303) is provided at the end of the dust cover (3).

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