KR20230055041A - Air spring for elevating type evacuation device - Google Patents

Abstract

The present invention relates to an air spring for an evacuation elevator, and more specifically, to an air spring for an evacuation elevator, which is mounted on an evacuation elevator. The present invention is used at an evacuation elevator, which safely descends according to a defined load and defined speed before an empty elevating plate automatically ascends to the upper portion within a predetermined time such that the elevating plate may be locked for the evacuation of the next evacuee. By means of the addition of a flow path which controls the flow of a mixed liquor, and the opening and closing operation, the ascending and descending speed may be maintained according to the standard. Furthermore, the impact of the elevating plate may be absorbed by means of the sudden ascension of a rod. To this end, the air spring for an evacuation elevator according to the present invention comprises: a cylinder formed into a first area in which a mixed liquor is stored, and a second area in which gas is stored; a sliding piston which is provided with a head, and of which one end is located at the first area; a floating piston provided between the first area and the second area; and a control unit which is provided between the sliding piston and the floating piston, and controls the ascending and descending speed of the sliding piston. Therefore, durability may be increased, such that a long-time use is enabled.

Description

Air spring for elevating type evacuation device}

The present invention relates to an air spring for an elevating evacuation device, and more particularly, it is mounted on an elevating evacuation device and safely descends according to a prescribed load and speed, and then an empty elevating plate automatically rises to the top within a predetermined time to allow for the next evacuation. It is used in an elevator evacuation system in which the elevator plate is locked for the evacuation of people, but the ascending and descending speeds are maintained in accordance with the standard by adding and opening and closing the passage to control the flow of the mixed liquid, and the elevation of the elevator plate due to the rapid rise of the load It relates to an air spring for an elevating evacuation device that absorbs shock.

As the number of buildings increases day by day thanks to rapid growth, the recent trend is to construct multi-functional complex buildings and high-rise buildings.

Therefore, it is very difficult to directly rescue from the ground in case of fire due to the high-rise building.

For safe evacuation, it is most desirable to escape to the evacuation floor through the stairs, but in case the exit is inevitably blocked due to fire spread or the stairs cannot be used due to a stacking phenomenon, emergency evacuation must be possible using an evacuation device.

Various types of evacuation devices such as descending devices and rescue teams are used as evacuation devices that can be used in case of emergency such as fire. It takes a lot of time to prepare for use, and there are problems in use due to risk factors such as collisions and falls due to shaking or uncertain factors.

Accordingly, an elevating type evacuation device whose descending speed is controlled according to a user's load is being used as a new evacuation mechanism.

Conventional lift-type evacuation devices have a structure using spiral springs, rack gears, reducers, etc., and a roaring noise is generated while the lift plate is raised, and the evacuees are surprised by the stop noise of the lift plate at the final point.

In addition, when descending, a loud noise is generated due to friction between the rack gear and the reducer, rapid speed change occurs during continuous use, and various problems such as insufficient durability, risk of damage, and expensive manufacturing cost are caused.

Accordingly, the need for a lift plate driving method that satisfies the required performance of a lift type evacuation device, has excellent performance that can be used safely and conveniently, and satisfies the regulations has emerged.

(Patent Document 1) KR 10-1077626 B1

(Patent Document 2) KR 10-2297737 B1

The present invention was invented to solve the above problems, and an air spring is applied to the elevator plate driving method, controls the flow of the internal mixed solution, and injects appropriate compressed air to control the rapid rising and falling speed of the elevator plate. , It replaces the role of the reducer in the prior art, there is no noise by using the passage flow during the operation of the air spring, and it is possible to use the elevator plate continuously with stable and excellent performance, and the elevator plate falls rapidly due to breakage of the wire rope. Its purpose is to prevent problems and provide an air spring for an elevating evacuation device that can be used for a long time with high durability against the external environment.

The object of the present invention is not limited to the object mentioned above, and other objects not mentioned will be clearly understood from the description below.

In the air spring for an elevating evacuation device according to the present invention for achieving the above object, in the air spring used in the elevating evacuation device, a cylinder formed of a first region in which mixed liquid is stored and a second region in which compressed gas is stored. ; a sliding piston having a head, one end of which is located in the first region; a floating piston provided between the first area and the second area; and a control unit disposed between the sliding piston and the floating piston and controlling the ascending and descending speed of the sliding piston. It is a technical feature that consists of.

In addition, a damping piston is further provided in the first region of the cylinder, and a shock due to a rapid rising speed of the sliding piston is absorbed.

In addition, the head of the sliding piston is provided with a plurality of flow passages, a part of which is closed when the sliding piston approaches the second area, and the whole is opened when the sliding piston moves away from the second area. do.

In addition, the control unit, a stop valve formed with a plurality of small holes; A compression valve positioned above the stop valve and formed of a circular plate; a stop valve bolt for guiding the compression valve; a return spring that operates the compression valve; a collar fixing the compression spring and the return spring; a washer for adjusting the operating distance of the return spring; and a stop valve nut preventing separation of the return spring and fixing a position of the washer. It is characterized by technical features consisting of.

In addition, a technical feature is that the plurality of small holes configured in the stop valve are automatically opened and closed by the compression valve.

The present invention according to the above configuration can expect the following effects.

Due to the triple packing, triple sealing, and application of HNBR hardness of 90 degrees, durability is relatively improved compared to existing air springs, making it possible to prevent problems with damage and leakage in advance.

A damping piston is provided, and a mixture of antifreeze and water is introduced into a flow path of the damping piston, so that the mixed solution slowly escapes and absorbs shock caused by rapid rise and fall.

In order to maintain a constant speed during the rise and fall of the air spring, it is possible to conform to the regulations for the rise and fall speed of the elevating evacuation device to which the present invention is applied through application of passages and opening and closing.

In addition, it is possible to conform to the regulations for the lowering speed according to the lowering weight through the pressure of the compressed gas and the change in the size of the orifice of the piston.

In the conventional technology, in the operation of the elevating shelter, irregular operation and noise occurred due to the friction of gears or springs or the load of the reducer, but smooth movement is possible through an air spring using compressed gas and a mixed liquid. do.

In addition, the existing elevator plate driving method such as spiral spring, wire, rack gear and reducer is changed to air spring method, so reducer, rack gear and spiral spring are unnecessary, and dangerous problems such as breakage and damage of each component are eliminated. improvement is possible.

1 is a configuration diagram of an air spring for an elevating type evacuation machine according to a preferred embodiment of the present invention.
2 is a state diagram showing a region of an air spring for an elevating type evacuation machine according to a preferred embodiment of the present invention.
3 is a detailed view of an air spring for an elevating type evacuation machine according to a preferred embodiment of the present invention.
4 is a state diagram of an air spring for an elevating evacuation machine in accordance with a preferred embodiment of the present invention when descending.
5 is a state diagram when the air spring for an elevating type evacuation device ascends according to a preferred embodiment of the present invention.
6 is a state diagram at the time of final ascent in the air spring for an elevating type evacuation machine according to a preferred embodiment of the present invention.
7 is a detailed view of a control unit in an air spring for an elevating evacuation machine according to a preferred embodiment of the present invention.

Hereinafter, an air spring for an elevating type evacuation machine according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a configuration diagram of an air spring for an elevating evacuation device according to a preferred embodiment of the present invention, FIG. 2 is a state diagram showing an area of an air spring for an elevating evacuation device according to a preferred embodiment of the present invention, and FIG. A detailed view of an air spring for an elevating type evacuation device according to a preferred embodiment of the present invention. FIG. 4 is a state diagram of the air spring for an elevating type evacuation device when descending according to a preferred embodiment of the present invention. FIG. Figure 6 is a state diagram at the time of final ascent of the air spring for an elevating type evacuation device according to a preferred embodiment of the present invention. It is a detailed view of a control unit in an air spring for an elevating evacuation device according to an embodiment.

As shown in FIG. 1, the air spring for an elevating evacuation machine according to a preferred embodiment of the present invention may be composed of a cylinder 100, a sliding piston 200, a floating piston 300, and a control unit 400.

For a detailed description of the preferred embodiment of the present invention, the cylinder 100 of the air spring for an elevating evacuation device will be described based on a state in which the cylinder 100 is positioned in a downward direction and the sliding piston 200 is positioned in an upward direction.

First, look at the cylinder 100.

The cylinder 100 forms the appearance of the air spring, but is composed of a cylindrical shape and can serve as a guide in the operation of the sliding piston 200 to be described later.

In addition, the cylinder 100 may be configured in the form of a tube with both ends open in the longitudinal direction, and is formed with a first area 700 storing a mixture of antifreeze and water and a second area 800 storing compressed gas. It can be.

The first area 700 of the cylinder 100 includes a dust seal 101, a rod guide 102, a bush 103, a ring housing 104, a cylinder O-ring 105, a cylinder Teflon ring, and a packing chamber 109. , Seal stopper 110, spring guide, coil spring 113, cylinder snap ring 114, ring stopper 115 and damping piston 116 may be composed.

The dust chamber 101 is located at the top of the cylinder 100, and can prevent foreign matter from being introduced into the cylinder 100 when the sliding piston 200, which will be described later, operates.

The dust seal 101 may be made of any soft or hard material that does not cause friction or interference when the sliding piston 200, which will be described later, operates.

The rod guide 102 is positioned at the bottom in a structure into which the dust seal 101 is inserted, and can prevent the sliding piston 200 to be described later from sagging and serve as a guide.

The bush 103 is inserted and positioned at the bottom of the rod guide 102, and it is possible to prevent scratches generated on the rod 201 of the sliding piston 200 to be described later when the sliding piston 200 to be described later operates. can

The ring housing 104 may be positioned below the rod guide 102, and the packing chamber 109 and the cylinder O-ring 105 may be inserted and coupled thereto.

In addition, a plurality of ring housings 104 may be provided in close contact with each other vertically, and may play an auxiliary role as a guide during the operation of the sliding piston 200 to be described later.

The cylinder O-ring 105 is coupled to the outside of the ring housing 104 and is positioned in close contact with the inner wall of the cylinder 100, preventing the mixture of antifreeze and water stored inside the cylinder 100 from leaking. .

The cylinder teflon ring may be composed of a ring housing teflon ring 106, a spring guide teflon ring 107 and a damping teflon ring 108.

The ring housing Teflon ring 106 may be inserted into the lower portion of the ring housing 104 to prevent tearing of the packing due to high pressure, thereby improving the durability of the packing.

The spring guide Teflon ring 107 is inserted and positioned under the spring guide, and it may be possible to improve the durability of the cylinder O-ring 105 used in the spring guide.

The damping Teflon ring 108 is placed in close contact with the upper part of the dangling piston, but it may be possible to prevent the cylinder O-ring 105 from being jammed.

The packing chamber 109 is inserted below the ring housing 104 and is located below the ring housing Teflon ring 106 to prevent leakage of the mixture of antifreeze and water inside the cylinder 100 like the cylinder O-ring 105. can

The seal stopper 110 is located below the ring housing 104, can prevent the packing chamber 109 inserted into the ring housing 104 from being separated, and assists the sliding piston 200 to be described later. it may be possible to do

The spring guide may serve to prevent and guide the coil spring 113 from coming off.

In detail, the spring guide is composed of an upper spring guide 111 located under the seal stopper 110 and a lower spring guide 112 spaced apart from each other at a predetermined interval and positioned in a symmetrical shape, so that the upper spring guide 111 may prevent the coil spring 113 from coming off, and the lower spring guide 112 may guide the coil spring 113 when it operates.

The edges of the lower end of the upper spring guide 111 and the upper end of the lower spring guide 112 may be configured in an inclined shape so that a mixture of antifreeze and water may flow easily.

One side of the coil spring 113 is inserted into the lower end of the upper spring guide 111 and the other side is inserted into the upper end of the lower spring guide 112, and it may be possible to transfer the damping piston 116.

The cylinder snap ring 114 is inserted and positioned under the lower spring guide 112, and may serve to prevent the ring stopper 115 from leaving.

The ring stopper 115 is located below the lower spring guide 112 and may serve to prevent the cylinder O-ring 105 configured below the ring stopper 115 from being separated.

The damping piston 116 is located below the ring stopper 115, and may serve to prevent impact during final ascent by controlling the final ascending speed of the air spring.

The above-described components may be configured such that an open hole is formed in the center so that the rod 201 of the sliding piston 200 to be described later is inserted and penetrated.

The second area 800 of the cylinder 100 includes a compressed gas storage space 117, a spring stopper 118, a C-spring 119, a valve housing, a valve spring 122, and a second area snap ring 123. ), a second area Teflon ring, a second area O-ring, a valve 128, a low cap 129, and a hex bolt 130.

The space 117 in which the compressed gas is stored is positioned below the floating piston 401 to be described later, and may be configured in a cylindrical shape with a hollow inside and a closed exterior to store the compressed gas.

The volume of the space 117 storing the compressed gas may be changed by the rise and fall of the floating piston 401 to be described later by the rise and fall of the air spring.

As the compressed gas stored in the space 117 where the compressed gas is stored, various types of gas may be used as needed, but it may be preferable to use nitrogen gas in general.

The spring stopper 118 is configured in a spring shape in the lower part of the space 117 in which the compressed gas is stored, and may serve as a stopper for the inlet valve spring 122.

The C-spring 119 is located below the spring stopper 118 and may serve to prevent the valve housing from coming off.

The valve housing is located at the lower part of the C-spring 119 and has a cylindrical shape. can play a role in

The valve spring 122 is located in the center of the primary valve housing 120, and may be used for operating the valve 128.

The second region snap ring 123 is positioned below the valve spring 122 and may serve as a stopper for the valve spring 122 .

The second area Teflon ring is located below the second area snap ring 123 and can serve to protect the second area O-ring, and the second area upper ring 126 and the second area O-ring 127 will be described later. ) It may be composed of a Teflon ring 124 on the second region and a Teflon ring 125 on the second region to protect.

The second region O-rings are respectively positioned under the second region Teflon ring, and may serve to block gas like a valve 128 to be described later.

The second region O-ring is closely attached to the lower end of the second region Teflon ring and may be composed of a second region upper O-ring 126 for blocking the first gas and a second region lowering 127 for blocking the final gas. there is.

The valve 128 is positioned under the second region upper o-ring 126 and may serve to block leakage of compressed gas in the second region 800 .

The low cap 129 is formed at the lower end, has a cylindrical shape to the outside of the valve 128, and may have an outer diameter smaller than that of the cylinder 100.

In addition, the valve 128, the gas injection path, the second area hauling 127, the hexa bolt 130, and the second area Teflon ring 125 may be inserted into the center of the low cap 129.

The hexa bolt 130 is configured to be inserted and fastened into the center of the low cap 129, and may play a role in preventing the ring from coming off.

The springs used in the above components may be of a standard desired by the user depending on the operation and required force, and it may be desirable to use off-the-shelf products for cost reduction and parts supply.

Next, look at the sliding piston 200.

The sliding piston 200 is positioned in a movable state by being inserted into the cylinder 100, and can be raised and lowered to the outside and inside the cylinder 100.

The sliding piston (200) consists of a rod (201), a wear ring (210), a piston stopper (202), a piston, a piston Teflon ring (206), a disc valve (207), a valve stopper (208), and a nylon nut (209). It can be.

The rod 201 is located at the uppermost end of the sliding piston 200 and is configured in the form of a long rod, so that it may be possible to transmit force within the stroke.

The rod 201 is a component of the sliding piston 200 that directly transmits force, and it may be preferable to use a material resistant to bending or breakage, but to use a metal material resistant to corrosion and abrasion.

The wear ring 210 may serve to prevent scratches and reduce frictional force generated on the inner wall of the cylinder 100 when the sliding piston 200 ascends and descends.

The piston stopper 202 is located below the rod 201 and may serve to prevent the piston from escaping.

A plurality of pistons are located below the piston stopper 202, and may serve to determine the rising and falling speed of the sliding piston 200.

In detail, the piston consists of a total of three, and the upper piston 203 can prevent foreign matter from entering when the sliding piston 200 rises, and the middle piston 204 can determine the lowering speed. , and the lower piston 205 may be able to determine the rate of rise.

In addition, the plurality of pistons are formed with a plurality of passages that are opened vertically in a radial manner, and the plurality of passages are automatically opened and closed when the sliding piston 200 rises and falls, so that the ascending and descending speeds can be controlled. there is.

The plurality of passages may be composed of an up passage 500 and a down passage 600, and may be used when the air spring rises and falls.

The piston Teflon ring 206 may serve to prevent jamming of the wear ring 210 and improve durability.

The disc valve 207 is located below the lower piston 205 and blocks the plurality of rising passages 500 formed in the plurality of pistons to determine the descending speed.

The valve stopper 208 may prevent the disc valve 207 from being separated so as to prevent a problem from occurring in the opening/closing operation of the plurality of passages formed in the plurality of pistons.

The nylon nut 209 is positioned while being coupled to the lowermost end of the sliding piston 200, and may serve to prevent a plurality of pistons from being separated.

Next, the floating piston 300 will be examined.

The floating piston 300 is located between the first area 700 and the second area 800 of the cylinder, and the mixed liquid in the first area 700 and the compressed gas in the second area 800 are not mixed. can play a role in preventing

Also, the floating piston 300 may serve to divide the first area 700 and the second area 800 of the cylinder.

When the air spring rises and falls, it may move up and down according to the volume change of the space 117 in which the compressed gas is stored.

Accordingly, it may be possible to change the rising and falling speed of the sliding piston 200 to a required speed by changing the pressure of the liquid mixture and the compressed gas as the volume changes.

Next, look at the control unit 400.

The control unit 400 is fixedly located inside the cylinder 100, and controls the flow of a mixture of antifreeze and water in the cylinder 100 to control the rising and falling speed of the sliding piston 200. that could be possible

In detail, a mixture of antifreeze and water passes through a plurality of small holes configured in the stop valve 403 of the control unit 400. When the sliding piston 200 descends, the plurality of small holes are closed, and when the sliding piston 200 ascends, the plurality of small holes are closed. The stomata are opened, and rapid speed control may be possible.

In addition, the cylinder 100 has an inwardly protruding groove, which is combined with a recessed groove formed outside the stop valve 403 of the control unit 400 so that the control unit 400 can move inside the cylinder 100. It may be possible to fix on

The control unit 400 is composed of a stop valve bolt 401, a compression valve 402, a stop valve 403, a return spring 404, a collar 405, a washer 406 and a stop valve nut 407. can

The stop valve bolt 401 is positioned in a bolt shape at the top of one side of the control unit 400, and may serve as a guide for the compression valve 402.

The stop valve bolt 401 may be moved in the longitudinal direction of the air spring according to the rise and fall of the sliding piston 200 .

The compression valve 402 is located in a circular plate shape at the bottom of the stop valve bolt 401, and determines the descending speed by blocking the passage when the sliding piston 200 descends, and when the sliding piston 200 ascends It can play a role in determining the rate of ascent by automatically opening the passage.

The stop valve 403 is located at the bottom of the compression valve 402, and a hole is formed in the center so that the stop valve bolt 401 can be penetrated and inserted, and a plurality of small holes are formed radially from the center to prevent antifreeze and water It can serve as a flow path through which the mixed liquid passes.

Depending on the size of the small hole formed in the stop valve 403, the speed at which the sliding piston 200 rises and falls is changed, so that the size of the plurality of small holes can be changed at a required speed.

The return spring 404 is located at the bottom of the stop valve 403 in the form of a spring and is coupled to the stop valve bolt 401 through and through, and it may be possible to operate the compression valve 402.

As the return spring 404 rises and falls according to the load, the stop valve bolt 401 and the compression valve 402 may be moved in the longitudinal direction of the air spring.

The collar 405 is located at the bottom of the return spring 404 while being penetrated with the stop valve bolt 401, and may guide and fix the compression valve 402 and the return spring 404.

The washer 406 is located at the bottom of the collar 405 in a state of being coupled with the stop valve bolt 401 through, but the operating distance of the return spring 404 can be adjusted according to the position where the washer 406 is coupled. there is.

The stop valve nut 407 is positioned at the bottom of the washer 406 while being coupled with the stop valve bolt 401, and can prevent the return spring 404 from being separated.

In addition, the stop valve nut 407 may serve to fix the position of the washer 406 positioned for the required operating distance of the spring.

The components of the above-described control unit 400 can be manufactured by changing their shape or structure according to the required conditions, but it is preferable to use ready-made products for commonly used components to reduce costs and achieve certain performance. can do.

Based on the above configuration, the operating state of the present invention will be examined.

First, the required performance of the air spring for the elevating type evacuation device is as follows.

1) When the weight of 20, 70 and 150kg is freely dropped on the lift plate, the lift plate should descend at a speed of 0.11m/s to 1.3m/s.

2) When the lift plate rises, it should rise at a speed within 0.4m/s.

3) After 20 repetitions with a load of 75kg on the lift plate, the average speed change rate should be within 80 to 120%.

4) 1) must be satisfied after 5,000 repetitions with 150kg load applied to the lift plate.

5) It should operate normally at -20 degrees cold resistance and +40 degrees heat resistance.

When the air spring descends, the sliding piston 200 is moved inside the cylinder 100, and the ascending passage 500 configured in the piston of the sliding piston 200 is blocked by the disc valve 207, and the descending passage 600 This makes it possible for the mixture of Roman antifreeze and water to move from the piston to the rod 201 side.

In addition, the compression valve 402 of the control unit 400 blocks the passage formed in the stop valve 403 to control the rapid descending speed.

In addition, it is possible to additionally control the descending speed by the pressure of the compressed gas stored in the second region 800 .

With the foregoing, the present invention makes it possible to satisfy the descending speed in the required performance of the air spring for a lift-type evacuation device.

When the air spring rises, the sliding piston 200 is moved to the outside of the cylinder 100, the lifting passage 500 configured in the piston of the sliding piston 200 is opened by the disk valve 207, and the opening passage ( 500), it is possible to move the mixture of antifreeze and water from the piston to the control unit 400.

In addition, the compression valve 402 of the control unit 400 opens the passage formed in the stop valve 403, so that the rapid rising speed can be controlled.

In addition, it is possible to additionally control the rising speed by the pressure of the compressed gas stored in the second area 800 .

With the foregoing, the present invention makes it possible to satisfy the rising speed in the required performance of the air spring for a lift-type evacuation device.

Even if the air spring is raised at a constant speed, an impact may occur at the final lifting position.

Therefore, in order to prevent a sudden shock before the air spring reaches the final lifting position, the flow path of the damping piston 116 is blocked, and the speed before the final rising is reduced while the mixture of antifreeze and water passes through the limited rising path 500, and the final rising It is possible to absorb the shock generated when

The pressure of the compressed gas stored in the second area 800 is closely related to the weight, and it is possible to satisfy the condition according to the weight change in the required performance of the air spring for the lift type evacuation device for the weight change with the pressure change of the compressed gas. will do

The present invention is a tool used in case of fire, and there is a concern about long-term neglect, so the internal parts are installed with triple packing, and all rubber packings are composed of HNBR hardness of 90 degrees, which can be used for a long time, so that the required performance of the air spring for an elevating type evacuation device is considered in terms of durability. It is possible to satisfy the condition for

In addition, in order to prevent solidification or vaporization of internal substances according to external temperature changes, antifreeze and water are mixed in a ratio of 50:50, but the freezing point is -40 to -35 degrees and the boiling point is 110 to 120 degrees depending on the temperature. It becomes possible to satisfy the operating condition.

In addition, the present invention makes it possible to prevent internal and external corrosion by applying a stainless material.

When the temperature of the compressed gas stored in the second area 800 rises by 10 degrees, the pressure rises by 3.4%. After the compressed gas is injected, a triple sealing process is performed to prevent leakage of the compressed gas, and the effect of the mixture of antifreeze and water It becomes possible to prevent the problem that the pressure rises rapidly.

The above embodiment is merely an example, and other embodiments variously modified therefrom are possible to those skilled in the art.

Therefore, the true technical protection scope of the present invention should include not only the above embodiments but also variously modified other embodiments according to the technical spirit of the invention described in the claims below.

100: cylinder
101: dust room
102: rod guide
103: Bush
104: ring housing
105: cylinder O-ring
106: ring housing teflon ring
107: spring guide teflon ring
108: damping teflon ring
109: packing room
110: thread stopper
111: upper spring guide
112: lower spring guide
113: coil spring
114: cylinder snap ring
115: ring stopper
116: damping piston
117: space for storing compressed gas
118: spring stopper
119: C-spring
120: primary valve housing
121: secondary valve housing
122: valve spring
123: second area snap ring
124: Teflon ring on the second region
125: Teflon ring in the second area
126: second area upper ring
127: second area hauling
128: valve
129: low cap
130: hexavolt
200: sliding piston
201: load
202: piston stopper
203: epithelial stone
204: medium piston
205 : Harpi Stone
206: piston teflon ring
207: disk valve
208: valve stopper
209: nylon nut
210: Wearing
300: floating piston
400: control unit
401: stop valve bolt
402: compression valve
403: stop valve
404: return spring
405: collar
406: washer
407: stop valve nut
500: rising euro
600: descending passage
700: first area
800: second area

Claims (5)

In the air spring used in the elevating evacuation system,
a cylinder formed of a first region for storing mixed liquid and a second region for storing compressed gas;
a sliding piston having a head, one end of which is located in the first region;
a floating piston provided between the first area and the second area; and
a control unit disposed between the sliding piston and the floating piston and controlling the ascending and descending speed of the sliding piston; An air spring for an elevating evacuation system consisting of According to claim 1,
An air spring for an elevating evacuation machine, characterized in that a damping piston is further provided in the first region of the cylinder to absorb shock caused by a rapid rising speed of the sliding piston. According to claim 1,
A plurality of passages are provided in the head of the sliding piston,
An air spring for an elevating type evacuation machine, characterized in that a part is closed when the sliding piston approaches the second area, and the whole is opened when the sliding piston moves away from the second area. According to claim 1,
The control unit,
A stop valve having a plurality of small holes;
A compression valve positioned above the stop valve and formed of a circular plate;
a stop valve bolt for guiding the compression valve;
a return spring that operates the compression valve;
a collar fixing the compression spring and the return spring;
a washer for adjusting the operating distance of the return spring; and
a stop valve nut preventing separation of the return spring and fixing a position of the washer; An air spring for an elevating evacuator, characterized in that composed of. According to claim 4,
An air spring for an elevating evacuation device, characterized in that the plurality of small holes formed in the stop valve are automatically opened and closed by the compression valve.

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