Safety connecting device of safety engineering protective door

Abstract

The utility model discloses a safety connecting device of a safety engineering protective door, and relates to the technical field of safety protection. The safety connecting device comprises a driving box, a shaft rod, a first damper, a second damper, a safety valve and a heat conducting plate. A piston cavity is formed in the driving box and filled with damping liquid. A first abutting groove and a second abutting groove are formed in the surface of the shaft rod and used for locking the door body in the opening state and the closing state. The heat conduction plate receives external heat through the evenly-distributed fins and guides the heat into the safety valve, when the external temperature rises, the memory alloy valve plate in the safety valve deforms, the valve hole is opened, the damping liquid is released, and the door closing acting force is relieved, so that the door body is easy to open, and the escape efficiency under unforeseen circumstances such as fire disasters is effectively improved. The safety door is simple in structure and complete in function, has the functions of slow door closing, automatic door closing and high-temperature escape, is suitable for use scenes of safety engineering protective doors, and improves safety and practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to safety protection door technical field, concretely is a kind of safety connection device of safety engineering protection door. BACKGROUND

[0002] In prior art, safety engineering protection door often uses automatic hinge structure to realize automatic closing door function, usually drives door body to close through hydraulic push rod, hydraulic buffer or elastic member.These devices make door body can be automatically reset after opening through hydraulic damping and elastic potential energy, realize automatic closing door function, ensure that door body keeps closed state, to prevent the security risk caused by personnel's carelessness of not closing door.

[0003] However, the traditional hydraulic automatic closing door structure has the following defects in practical application:

[0004] When fire or high-temperature accidental state occurs, the internal liquid of hydraulic structure can cause pressure to rapidly increase due to thermal expansion effect, and the closing force is further enhanced.In fire environment, the pressure difference between indoor and outdoor also increases, which makes it difficult for safety door installed with traditional automatic closing door device to be opened, seriously affects the evacuation speed of escape personnel, increases the difficulty of escape, and even may lead to more serious personnel casualty risk.In addition, the traditional hydraulic structure lacks flexible adjustment mechanism in the buffering process, and it is difficult to meet the needs of slow closing door while ensuring easy opening performance in emergency.

[0005] To solve the above problems, the utility model sets up damping structure and high-temperature release mechanism, solves the problem that the pressure of traditional automatic closing door device is too large to open the safety door in fire or other accidental conditions, and realizes the functions of slow closing door and automatic closing door, improves safety and use effect. UTILITY MODEL CONTENTS

[0006] The utility model aims at solving the technical problems existing in prior art or related art.

[0007] A safety connection device of safety engineering protection door, comprising:

[0008] Drive box: for installing and supporting various components of safety connection device, the inner side is provided with piston cavity, and the inside of piston cavity is filled with damping liquid;

[0009] Shaft: set in drive box, outer periphery is circular arc surface structure, the surface is provided with first resistance groove and second resistance groove, respectively matched with stopper, to realize locking of door body in opening and closing state;

[0010] First damper and second damper: respectively located at both sides of piston cavity, comprising:

[0011] The first adjusting plug and the second adjusting plug are fixed on one side of the limiters respectively;

[0012] The first spring and the second spring are installed in the interiors of the first damper and the second damper respectively, and are used for providing elastic potential energy.

[0013] The left and right limiters are in sliding abutment with the inner side of the piston cavity, and the surfaces of the limiters are provided with flow limiting holes for the flow of damping liquid.

[0014] The heat conducting plate is embedded and installed on the surface of the driving box, and is used for receiving external heat and conducting the heat into the safety valve.

[0015] The safety valve comprises a valve hole and a valve piece, the valve piece is made of a memory alloy, is bent and deformed in a high temperature state, opens the valve hole, and makes the damping liquid in the piston cavity automatically discharge, so that the door closing force is released.

[0016] In a preferred example, the shaft rod moves the left and right limiters into the piston cavity by the elastic potential energy of the spring during the closing process of the door body, the damping liquid slowly flows through the channels on the surfaces of the limiters, the rotating speed of the shaft rod is reduced, and the slow closing effect is realized.

[0017] In a preferred example, the first spring and the second spring provide elastic potential energy to automatically reset the shaft rod after the door body is opened, the automatic door closing function is realized, and the safety hazard caused by the negligence of people in not closing the door is avoided.

[0018] In a preferred example, the heat conducting plate conducts external heat to the safety valve in a high temperature state such as fire, the valve piece of the safety valve is bent and deformed in a high temperature state, opens the valve hole, makes the damping liquid in the piston cavity automatically discharge, releases the door closing force, the door body is easy to open, and the escape efficiency is improved.

[0019] In a preferred example, the right abutting piece and the first abutting groove are in abutment to realize the stable locking of the door body in the door opening state, and the left abutting piece and the second abutting groove are in abutment to realize the closing stability of the door body in the door closing state.

[0020] In a preferred example, the first adjusting plug and the second adjusting plug are in threaded engagement, the elastic potential energy of the first spring and the second spring can be flexibly adjusted, and the requirements of different door closing speeds and forces are met.

[0021] The utility model discloses the beneficial effects achieved are as follows:

[0022] 1.The utility model discloses a first damper and a second damper are arranged in the piston cavity, cooperate the flow of damping liquid in the limiter, reduce the rotation rate of the shaft rod, realize the door body slow -speed closing, and make the shaft rod automatic reset, thereby realize the automatic door closing effect, avoid the security risk caused by the inattention of personnel not closing the door.

[0023] 2.The utility model discloses a heat conduction plate imports the heat of outside into the safety valve, when the environmental temperature rises, the valve piece is bent and deformed under high temperature, opens the valve hole, and the damping liquid in the piston cavity is automatically discharged, and the door closing force is released, the door body is easy to open, effectively improves the escape efficiency under the unexpected disaster such as fire. DRAWINGS

[0024] Figure 1 It is the whole structure schematic diagram of an embodiment of the utility model;

[0025] Figure 2 It is the inside schematic diagram of the drive box of an embodiment of the utility model;

[0026] Figure 3 It is the first damper and the second damper structure schematic diagram of an embodiment of the utility model;

[0027] Figure 4 It is the shaft rod surface structure schematic diagram of an embodiment of the utility model;

[0028] Figure 5 It is the right limiter cross section structure schematic diagram of an embodiment of the utility model;

[0029] Figure 6 It is the safety valve cross section structure schematic diagram of an embodiment of the utility model.

[0030] Reference signs:

[0031] 100, drive box;110, heat conduction plate;120, piston cavity;130, safety valve;131, valve hole;132, valve piece;

[0032] 200, shaft rod;210, connecting flange;201, first resistance groove;202, second resistance groove;

[0033] 300, first damper;310, first adjusting plug;320, left limiter;311, first spring;321, left resistance piece;

[0034] 400, second damper;410, second adjusting plug;420, right limiter;411, second spring;421, right resistance piece;422, flow limiting hole. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the utility model is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0036] It is understood that the description is only exemplary and is not intended to limit the scope of the utility model.

[0037] The utility model is described below in combination with the accompanying drawings Figures 1-6 Some embodiments of the utility model provide a safety connection device of a safety engineering protective door.

[0038] Embodiment one: overall structure

[0039] As Figure 1 shown, the utility model provides a safety connection device of a safety engineering protective door, which comprises:

[0040] The driving box 100 is used for mounting and supporting the whole safety connection device. The inner side of the driving box 100 is provided with a piston cavity 120, and the piston cavity 120 is filled with damping liquid for providing damping effect. The surface of the driving box 100 is embedded with a heat conduction plate 110, and the heat conduction plate 110 is provided with a plurality of evenly distributed fins for receiving external heat.

[0041] The shaft rod 200 is in a circular arc surface structure, and the surface is provided with a first resisting groove 201 and a second resisting groove 202. The two resisting grooves are semicircular groove shapes, and the arrangement directions are perpendicular to each other. The shaft rod 200 is fixedly sleeved with two connecting flanges 210 on the surface, which is used for abutting with the bottom surface of the safety engineering protective door, so as to improve the connection effect of the door body and the shaft rod 200.

[0042] The first damper 300 and the second damper 400 are respectively located on both sides of the piston cavity 120, which is used for providing damping and elastic reset effect for the rotation of the shaft rod 200.

[0043] The safety valve 130 is arranged on the surface of the driving box 100 and communicates with the piston cavity 120, which is used for releasing the damping liquid under high temperature condition and relieving the door closing force.

[0044] Specifically, the first damper 300 and the second damper 400 are located at the inner side of the piston cavity 120 and elastically abut against both sides of the shaft 200 respectively for positioning the deflection angle of the shaft 200; the first damper 300 comprises a first adjusting plug 310, a left limiter 320 and a first spring 311 fixed to one side of the first adjusting plug 310 and abutting against the end of the left limiter 320, the surface of the left limiter 320 is provided with a left abutting piece 321, the second damper 400 comprises a second adjusting plug 410, a right limiter 420 and a second spring 411 fixed to one side of the second adjusting plug 410 and abutting against the end of the right limiter 420.

[0045] The heat-conducting plate 110 abuts against one side of the valve piece 132 for conducting heat from the outside to the surface of the valve piece 132, the valve piece 132 is in a straight piece shape and abuts against the inner side of the valve hole 131 in a natural state to realize the closure of the valve hole 131, and is in a curved shape in a high-heat state to make the valve hole 131 open.

[0046] Embodiment two: structure and working principle of the damper

[0047] As shown in Figure 2 and Figure 3 , the structure and function of the first damper 300 and the second damper 400 are as follows:

[0048] The first damper 300 comprises: a first adjusting plug 310: the outer periphery is in a threaded shape and is threadedly engaged with the inner side of the piston cavity 120. By rotating the first adjusting plug 310, the pre-tightening force of the first spring 311 can be adjusted, and then the elastic potential energy is adjusted. The first spring 311: one end is fixed to the first adjusting plug 310, and the other end abuts against the left limiter 320 to provide an elastic return force. The left limiter 320: the outer periphery is in sliding abutment with the inner side of the piston cavity 120, and the surface is provided with a passage flow limiting hole 422 for damping liquid flow. The surface of the left limiter 320 is provided with a left abutting piece 321 for abutting against the second abutting groove 202 of the shaft 200 to realize the locking of the door body in the closed state.

[0049] The structure of the second damper 400 is similar to that of the first damper 300, comprising: a second adjusting plug 410: for adjusting the pre-tightening force of the second spring 411. The second spring 411: provides an elastic return force, and the elastic potential energy thereof is greater than that of the first spring 311. The right limiter 420: the outer periphery is in sliding abutment with the inner side of the piston cavity 120, and the surface is also provided with a passage flow limiting hole 422. One side of the right limiter 420 is provided with a right abutting piece 421 for abutting against the first abutting groove 201 of the shaft 200 to realize the locking of the door body in the open state.

[0050] Working principle:

[0051] When the door body is opened, the right abutting piece 421 abuts against the first abutting groove 201, and the elastic potential energy of the right spring 411 makes the shaft rod 200 have a tendency to close the door.

[0052] When the door body is closed, the left abutting piece 321 abuts against the second abutting groove 202, and the elastic potential energy of the left spring 311 makes the shaft rod 200 stable in the closed position.

[0053] During the rotation of the shaft rod 200, the left and right limiters 320 and 420 move under the action of the spring force, the damping liquid slowly flows through the passage flow limiting hole 422, a damping effect is provided, the rotation speed is reduced, and the slow closing of the door is realized.

[0054] Example Three: Structure and High-temperature Release Function of Safety Valve

[0055] As shown in Figure 2 and Figure 6 , the structure of the safety valve 130 includes:

[0056] Valve hole 131: provided on the driving box 100 and in communication with the piston cavity 120. Valve piece 132: fixedly installed on the inner side of the valve hole 131, made of a memory alloy material, in a straight piece shape, and tightly fitted with the valve hole 131 in a natural state to realize sealing.

[0057] Working principle:

[0058] At room temperature, the valve piece 132 is sealed with the valve hole 131, the damping liquid is sealed in the piston cavity 120, the damper normally works, and the slow closing and automatic closing functions of the door are provided.

[0059] In a high-temperature environment, when the external temperature rises, such as in a fire, the fins on the heat conduction plate 110 receive heat and conduct the heat to the valve piece 132 through the heat conduction plate 110. After the valve piece 132 is heated, it deforms and bends to open the valve hole 131, the damping liquid flows out from the valve hole 131, the pressure in the piston cavity 120 decreases, and the spring force is released.

[0060] As a result, the door body becomes easy to open in a high-temperature state, and personnel can more easily open the safety door and escape quickly, improving the safety in an emergency.

[0061] Example Four: Adjustment of Elastic Potential Energy

[0062] As shown in Figure 3 , the first adjusting plug 310 and the second adjusting plug 410 have a threaded shape on the outer periphery and are in threaded engagement with the inner side of the piston cavity 120. By rotating the first adjusting plug 310 and the second adjusting plug 410, the pre-tightening force of the spring can be adjusted, and then the size of the elastic potential energy is adjusted.

[0063] Clockwise rotation of the adjusting plug can increase the compression amount of the spring, and increase the elastic potential energy. Counterclockwise rotation of the adjusting plug can reduce the compression amount of the spring, and reduce the elastic potential energy. The user can flexibly adjust the closing speed and force of the door body according to the weight of the door body, the use environment and other requirements, so as to meet different use requirements.

[0064] Example five: design of the heat conduction plate

[0065] As shown in Figure 5 The heat conduction plate 110 is provided with a plurality of uniformly distributed fins on the surface. The heated area of the heat conduction plate 110 is increased, and the heat absorption efficiency is improved. The heat conduction to the valve plate 132 is accelerated, and it is ensured that the valve plate rapidly deforms and opens the safety valve in a high-temperature environment.

[0066] Material selection:

[0067] The heat conduction plate 110 and the fins can be made of a metal material with high heat conduction performance, such as copper or aluminum alloy, to further improve the heat conduction efficiency.

[0068] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A safety connection device for a safety engineered access door, comprising: The utility model relates to a drive box (100), axle rod (200) and first damper (300) and second damper (400) located in drive box (100) inside, the inside of drive box (100) is equipped with heat conduction plate (110), and first damper (300) and second damper (400) are located in the inside of piston cavity (120) respectively with the elastic abutment of both sides of axle rod (200) for the deflection angle positioning of axle rod (200), first damper (300) includes first adjusting plug (310), left limiter (320) and the first spring (311) fixed to the one side of first adjusting plug (310) and the end abutment of left limiter (320), the surface of left limiter (320) is equipped with left abutting piece (321), and second damper (400) includes second adjusting plug (410), right limiter (420) and the second spring (411) fixed to the one side of second adjusting plug (410) and the end abututment of right limiter (420), and one side of right limiter (420) is equipped with right abutting piece (421), and the surface of axle rod (200) is equipped with first abutting groove (201) and second abutting groove (202) corresponding with left abutting piece (321) and right abutting piece (421), The inside of piston cavity (120) is filled with damping liquid, the surface of drive box (100) is equipped with safety valve (130) communicating with piston cavity (120), the surface of drive box (100) is embedded with heat conduction plate (110), the inside of safety valve (130) is equipped with valve hole (131), and valve piece (132) is fixedly installed in the inside of valve hole (131), one side of heat conduction plate (110) and valve piece (132) abut for the heat conduction of external heat to the surface of valve piece (132), and valve piece (132) is linear sheet shape, and in the natural state, the periphery abuts with the inside of valve hole (131) to realize the closure of valve hole (131), and in the high heat state, valve piece (132) is bent to make valve hole (131) open. The surface of axle rod (200) is fixedly sleeved with connecting flange (210), and connecting flange (210) is used for abutting with the bottom surface of safety engineering protective door to improve the connection effect of safety engineering protective door and axle rod (200).

2. A safety connection device for a safety engineered access door according to claim 1, wherein, The periphery of left limiter (320) and right limiter (420) abuts with the inside of piston cavity (120) sliding, and the surface of left limiter (320) and right limiter (420) is equipped with flow limiting hole (422) for the flow of damping liquid.

3. A safety connection device for a safety door according to claim 1, wherein First abutting groove (201) and second abutting groove (202) are all semicircular groove shapes, and first abutting groove (201) and second abutting groove (202) are perpendicular to each other in arrangement direction.

4. A safety connection device for a safety door according to claim 1, wherein The periphery of axle rod (200) is circular arc surface structure, the surface of left abutting piece (321) and right abutting piece (421) is plane shape, and the elastic potential energy of second spring (411) is greater than the elastic potential energy of first spring (311).

5. A safety connection device for a safety door according to claim 1, wherein The periphery of first adjusting plug (310) and second adjusting plug (410) is screw thread shape and is screw thread engaged with the inside of heat conduction plate (110).

6. A safety connection device for a safety door according to claim 1, wherein ​ 7. A safety connection device for a safety door according to claim 1, wherein The heat-conducting plate (110) is provided with a plurality of uniformly distributed fins on the surface, which are used to receive heat from the outside and conduct the heat to the valve plate (132).

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