CN204531235U - A kind of novel building external Emergency Ladder - Google Patents

Abstract

The utility model relates to a new type of escape ladder installed outside the building. Its technical characteristics are as follows: it is composed of an escape ladder structure part, an electrical driving part and an electrical control system. The escape ladder structure part includes a ladder body, a turning support device and an auxiliary support device. The ladder body is composed of the main frame of the ladder body, the horizontal fixed cross bar, the collar of the fixed-end overturn support device, the overturn support device is composed of a rotating shaft, a deceleration mechanism and a support rod, and the auxiliary support device includes a fixed-end horizontal support platform, a free-end Horizontal support platform, ground base, locking mechanism, and ladder release channel; the electrical dragging part includes the elevator motor, the pumping motor, the ladder shaft, the ladder pumping plate and the ladder rope; the electrical control system includes the power supply part and PLC Control System. The utility model has a reasonable design, increases the means and efficiency of personnel escape, provides users with a higher sense of security, is applicable to a wider range of people, and has higher evacuation and escape efficiency at the same time.

Description

A new type of building external escape ladder

technical field

The utility model belongs to the field of building construction, in particular to a novel building external escape ladder.

Background technique

With the development of urbanization, there are more and more densely populated public places in cities. When a fire breaks out in some densely populated public places (such as shopping malls), the existing escape methods cannot provide sufficient evacuation capacity, and there are often situations where the fire exit cannot be guaranteed to be unobstructed or a fire situation also occurs in the passage. Therefore, there have been various emergency escape devices outside the building on the market, mainly including vertical escape ladders or soft ladders, escape ropes, escape slides, slow descenders and fixed escape ladders, etc. These escape methods have their own advantages and disadvantages. Advantages and disadvantages. Vertical ladders and escape ropes are more risky and can easily cause people to fear. They are not suitable for special groups such as the elderly and children, and there are disadvantages such as one person falling and endangering others. Fixed escape slides and fixed escape ladders affect the appearance of the building and take up a lot of space. For some public places such as large shopping malls, supermarkets, entertainment and catering cities where the height of the floor is not very high but the area of each floor is large and the flow of people is large, the existing emergency escape channels are still relatively simple, mainly through the emergency channels in the building. escape. When critical situations such as fires take place, some personnel may not be able to escape in time due to the single escape method.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a novel building external escape ladder which is reasonable in design, safe and effective, convenient to use, high in escape efficiency and sense of security, and suitable for a wide range of people.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A new type of escape ladder installed outside the building, which is composed of the structural part of the escape ladder, the electrical driving part, and the electrical control system, wherein:

The structural part of the escape ladder includes a ladder body, a flip support device and an auxiliary support device. The ladder body is composed of a ladder body main frame, a horizontal fixed cross bar, and a ring of a fixed end flip support device. The horizontal fixed cross bar is located at the end of the ladder body. The ring of the overturning support device at the fixed end of the ladder body is arranged at the bottom of the fixed end of the main frame of the ladder body; the overturning support devices are evenly distributed on the outer wall of the building, and each overturning support device is composed of a rotating shaft, a deceleration mechanism and a support rod , the rotating shaft is connected with the deceleration device and fixed on the outer wall of the building. One end of the support rod is fixed on the rotating shaft. Installed in the groove formed at the bottom of the ladder body; the auxiliary supporting device includes a fixed-end horizontal support platform, a free-end horizontal support platform, a ground base, a locking mechanism, and a ladder-releasing channel. The fixed-end horizontal support platform is located at On the outer wall of the building at the fixed end of the ladder body, the free end horizontal support platform is located on the outer wall of the building at the free end of the ladder body, and the elevator motor, the pumping plate motor, the ladder rotating shaft and the ladder pumping plate are installed on the free end horizontal support platform, The ground base is installed on the ground, and the locking mechanism is located on the roof or near the ladder body in the ladder channel to keep the ladder body in the shape of a guardrail when it is in a normal state. The ladder channel is set on the edge of each floor;

The electrical dragging part includes a ladder motor, a pumping board motor, a ladder rotating shaft, a ladder pumping board and a ladder rope. The rotating shaft and the ladder-releasing pumping plate; the ladder-releasing rotating shaft is fixed above the horizontal support platform at the free end, and the ladder-releasing pumping plate is located at the edge of the free end horizontal supporting platform close to the side of the ladder body; the ladder-releasing rope is wound on the ladder-releasing rotating shaft, and the free end is fixed On the horizontal fixed bar, the ladder-releasing rotating shaft drags the ladder body to move through the ladder-releasing rope;

The electrical control system includes the power supply part and the PLC control system. The PLC control system includes PLC, travel switch, indicator light, operation button, contactor, relay and escape indicator signs in the building; the travel switch and operation button are connected to the input terminal of the PLC. The coil of the device, the relay, the indicator light, and the escape indicator in the building are connected with the PLC output terminal.

Moreover, a mechanical self-locking mechanism is provided on the horizontal support platform at the fixed end, so that the turning support device at the fixed end of the ladder body can be fixed after the turning is completed; When the ladder body is placed on the lower ladder pumping plate, the ladder body is fixed; the ground base is provided with a mechanical self-locking mechanism, so that the horizontal fixed cross bar at the free end of the ladder body falls in the corresponding groove of the mechanical self-locking mechanism to obtain fixed.

Moreover, the described elevator locking mechanism is controlled by a relay installed on the roof.

Moreover, the power supply part includes 380V three-phase alternating current and 220V two-phase alternating current, the 380V three-phase alternating current directly supplies power to the elevator motor and the lifter motor, and the 220V two-phase alternating current supplies power to the PLC control system after being rectified by the rectifier module.

Moreover, the travel switch is used to collect the position information of the ladder body and input it to the PLC. Each ladder body is provided with five travel switches, which are respectively located on the horizontal support platform at the fixed end, the innermost side of the ladder drawer track, and the ladder drawer. on the outer wall of the horizontal position of the ladder body, on the outside of the rail of the ladder drawer and on the outside of the ladder body.

Moreover, the PLC controls the running state of the elevator motor and the pumping motor through the contacts of the contactor, wherein the contactor KM61 contact and the contactor KM62 contact respectively control the forward rotation and reverse rotation of the elevator motor; the contactor The KM63 contact and the contactor KM64 contact respectively control the forward rotation and reverse rotation of the pumping motor 42; the contactor KM65 contact is located on the main road and is used to control the emergency stop of the elevator process.

Moreover, the indicator lights and operation buttons are arranged on the control panel, and the control panel is installed near the landing on each floor.

Moreover, the indicator lights include a power indicator light, a draw board indicator light, an elevator indicator light, an elevator retraction indicator light, a construction completion indicator light, and an emergency stop indicator light; the operation buttons include an emergency switch, a confirmation button, and an emergency stop button. , Lift button.

Moreover, the horizontal support platform on each floor of the building body is aligned up and down, and the length of the ladder drawer is long enough, so that the ladder body of this floor can pass through when the ladder drawer is fully retracted when the ladder body is in a horizontal state, and it is enough to pass through when the ladder drawer is fully retracted. After stretching out, it provides support for the ladder body laid down on the upper floor.

Advantage and positive effect of the present utility model are:

The utility model provides a convenient, practical, safe and effective escape device for densely populated and low-floor public places such as large supermarkets and shopping malls, which increases the way and efficiency of personnel escape. Compared with the vertical escape method, the utility model provides users with a higher sense of security, so it is applicable to a wider range of people and has higher evacuation and escape efficiency. In addition, the main body of the escape ladder of the present utility model is placed on the roof or the edge of a certain floor in a normal state, so it does not affect the overall appearance of the building.

Description of drawings

Fig. 1 is the normal structure schematic diagram of the utility model;

Figure 2 is a schematic diagram of the horizontal state during the construction of the escape ladder;

Figure 3 is a schematic diagram of the state after the escape ladder is built;

Figure 4 is a structural schematic diagram of the overturn support device

Fig. 5 is a schematic diagram of the connection structure between the collar and the support rod of the fixed-end overturning support device;

Fig. 6 is the schematic diagram of the principle of the electric part;

Fig. 7 is the main circuit diagram of motor control part;

Figure 8 is a schematic diagram of the control panel;

In the figure, 11-ladder main frame, 12-horizontal fixed cross bar, 13-fixed end overturn support device collar, 2-overturn support device, 21-rotating shaft, 22-reduction mechanism, 23-support rod, 31-fixed End horizontal support platform, 32-free end horizontal support platform, 33-ground base, 34-elevator locking mechanism, 35-elevator release channel, 310 mechanical self-locking mechanism, 330 mechanical self-locking mechanism, 41-elevator elevator motor, 42 -Pumping board motor, 43-Ladder release shaft, 44-Ladder release pumping board, 45-Ladder release rope, 440 Mechanical self-locking mechanism, 50-ground base travel switch, 51-first travel switch, 52-second travel Switch, 53-third travel switch, 54-fourth travel switch, 55-fifth travel switch, KM61-contactor, KM62-contactor, KM63-contactor, KM64-contactor, KM65-contactor, relay 7 .

Detailed ways

Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail:

The utility model relates to a novel building external escape ladder, which is composed of an escape ladder structure part, an electric driving part and an electric control system. The structural part of the escape ladder constitutes the escape passage, the electrical drag part is used to drag the escape ladder to build, and the electrical control system is used to detect the operating status of the device, and to control and instruct its operation. The utility model is mainly suitable for large shopping malls, supermarkets, entertainment and catering cities and other public places with relatively low floors, but each floor has a large area and dense population. Take application in three-story buildings as an example below to further illustrate the technical solution of the present utility model:

As shown in Fig. 1 to Fig. 5, the structural part of the escape ladder includes a ladder body, an overturn support device 2 and an auxiliary support device.

The ladder body is composed of a ladder body main frame 11, a horizontal fixed cross bar 12, and a ring 13 of a fixed end overturn support device. The ladder body is made of light and strong materials, and is placed upright on the roof of a public place or in the ladder-releasing channel 35 in the floor during normal conditions, and is fixed by a locking ladder mechanism 34 . The main frame of the ladder body 11 constitutes the stairs for personnel to escape, and the horizontal fixed cross bar 12 is located at the end of the lower end of the ladder body, and is used to fix the free end of the ladder body to the free end horizontal support platform 32 of the next floor after the ladder body is lowered. The ladder drawer 44 or the mechanical self-locking mechanism 440 or 330 on the ground base 33 make the ladder body more stable; in addition, the horizontal fixed cross bar 12 is also used as the focus point of the ladder rope 45 for fixing the ladder. rope45. The collar 13 of the overturning support device at the fixed end of the ladder body is arranged at the bottom of the fixed end of the main frame 11 of the ladder body, and is sleeved on the overturning support device 2 at the fixed end of the ladder body. The ring 13 of the overturning support device at the fixed end is located at the bottom of the fixed end of the ladder body main frame 11, and is used for covering the support rod 23 of the overturn support device 2 near the fixed end.

As shown in FIG. 4 , the overturning supporting devices 2 are evenly distributed on the outer wall of the building, and each overturning supporting device 2 is composed of a rotating shaft 21 , a speed reduction mechanism 22 and a supporting rod 23 . The rotating shaft 21 is connected with the decelerating device 22 and is fixed on the outer wall of the building. One end of the supporting rod 23 is fixed on the rotating shaft 21, wherein the supporting rod 23 near the fixed end (the rightmost supporting rod in FIG. 1 ) is embedded in the ladder body In the fixed end overturn support device collar 13 (as shown in Figure 5) of main frame 11 bottoms, the support bar on other overturn support devices 2 is embedded in the groove that the ladder body bottom is shaped on. The support rod 23 embedded in the collar of the fixed-end overturn support device is used as the rotating shaft for the lowering of the ladder body after the overturn is completed, and the end of the support rod 23 is fixed in the mechanical self-locking mechanism 310 on the fixed-end horizontal support platform 31; other parts The support rods 23 can continue to rotate downwards to the vertical downward state after the ladder body is overturned into a horizontal state, so that other support rods 23 will not affect the lowering of the ladder body. The overturning of the ladder body is carried out under the action of its own gravity and spring force. Since the overturning support device 2 includes a deceleration mechanism 22, the overturning process of the ladder body is relatively slow and stable.

The auxiliary supporting device includes a fixed-end horizontal supporting platform 31, a free-end horizontal supporting platform 32, a ground base 33, a locking mechanism 34, and a ladder-releasing channel 35. support. The fixed end horizontal support platform 31 is located on the outer wall of the building at the fixed end of the ladder body, which provides fixing and support for the fixed end of the ladder body, and can also be used as a platform for people to climb the stairs. The fixed end horizontal support platform 31 includes a mechanical self-locking mechanism 310, A turning support device 23 located at the fixed end of the ladder can be fixed after the turning is completed, as a rotating shaft in the lowering process of the ladder. The free-end horizontal support platform 32 is located on the outer wall of the building at the free end of the ladder body, and is used as a foothold platform for the personnel on the upper floor to go down to the floor through the ladder body, and enter the ladder passageway 35 through the platform to go to the fixed-end horizontal support of the floor. Taiwan 31. On the free end horizontal support platform 32, a ladder motor 41, a pumping plate motor 42, a ladder rotating shaft 43 and a ladder pumping plate 44 are installed. The ground base 33 is located at an appropriate position on the ground, so that the free end of the ladder body on the second floor just falls on the ground base 33 after being lowered, thereby providing support and fixing for the completed ladder body. A mechanical self-locking mechanism 330 is installed on the base of the ground, so that the horizontal fixed cross bar 12 at the free end of the ladder body falls in the corresponding groove of the mechanical self-locking mechanism 330 to be fixed. The ladder locking mechanism 34 is located near the ladder body in the elevator passage 35 in the appropriate position on the roof or the floor, and is used to keep the guardrail shape when the ladder body is in a normal state. The ladder locking mechanism 34 is controlled by the relay 7 installed nearby. The relay 7 is energized, so that the ladder locking mechanism 34 is opened, and the ladder body turns outwards under the effect of self gravity and spring tension. The ladder-releasing channel 35 is set on the edge of each floor side, usually used to place the ladder body, when the escape ladder starts and the ladder body is built, the ladder-releasing channel 35 is vacated, and the free end of the floor is horizontally supported by the escape personnel. 32 passages leading to the fixed end horizontal support platform 31, so that the personnel on the upper floor who escape to this floor can continue to escape to the lower floor.

As shown in Figures 1 to 3, the electrical dragging part includes a ladder motor 41, a pumping motor 42, a ladder rotating shaft 43, a ladder pumping plate 44 and a ladder rope 45, and the electrical dragging part provides power for the construction of the escape ladder. . Wherein, the ladder-releasing motor 41 and the pumping plate motor 42 are all located on the free-end horizontal support platform 32, and are used to drag the ladder-releasing rotating shaft 43 and the ladder-drawing plate 44 respectively. The ladder-releasing rotating shaft 43 is fixed on the top of the free end horizontal support platform 32, and rotates under the drag of the ladder-releasing motor 41, thereby dragging and retracting the ladder body. Ladder-putting pumping plate 44 is positioned at free end horizontal support platform 32 near the edge of ladder body one side, can stretch out or retract under the dragging of pumping plate motor 42. Ladder rope 45 is wound on the ladder rotating shaft 43, and the free end is fixed on the horizontal fixed cross bar 12, and ladder rotating shaft 43 drags the ladder body motion by putting ladder rope 45. When this layer of ladder needs to be lowered, the ladder pumping plate 44 is pulled out under the drag of the pumping plate motor 42, and the free end of the ladder body is lowered steadily under the traction of the ladder rope 45. After the ladder body of this layer is put down, before the upper ladder body is put down, the ladder pumping plate 42 stretches out again to provide support for the free end of the upper ladder body. There is a mechanical self-locking mechanism 440 on the described ladder-putting drawer plate 44, and when the upper ladder body is put on the lower floor ladder-putting drawer plate 44, the mechanical self-locking mechanism 440 fixes the ladder body.

As shown in Figure 6, the electrical control system includes a power supply part and a PLC control system and is installed at an appropriate location in the building. The power supply part includes two parts: 380V three-phase AC power supply and 220V two-phase AC power supply. The 380V three-phase AC power directly supplies power to the motor (elevator motor 41, pumping board motor 42), and the 220V two-phase AC power is controlled by PLC after being rectified by the rectifier module. The system is powered. The PLC control system includes PLC, travel switch, control panel (indicator light, operation button), contactor, relay and escape indication signs in the building. The travel switch and operation button are connected to the PLC input terminal to realize the monitoring and operation control of the system working state; the contactor coil, relay, indicator light, and the escape indicator in the building are connected to the PLC output terminal to realize the control of the drag motor, Indication of the system's operating status and providing alarms and instructions for the escape of people in the building. The contactor contacts are located in the main circuit, and the forward, reverse and stop of the motor are controlled through the opening and closing of the contactor contacts.

In the electrical control system, the travel switch collects the position information of the ladder body and inputs it to the PLC. Each ladder body is provided with 5 travel switches, which are respectively located on the horizontal support platform at the fixed end (travel switch 51), on the innermost side of the ladder-drawing plate track (travel switch 52), on the ladder-drawing plate 44 (travel switch 53), Put the outer wall (travel switch 55) on the outer wall (travel switch 54) and the ladder body horizontal position of the ladder extracting plate track. The travel switch 51 on the horizontal support platform 31 at the fixed end is used to detect whether the ladder body is overturned to a horizontal position; the travel switch 52 on the innermost side of the ladder drawer 44 track is used to detect whether the ladder drawer 44 is fully indented; The travel switch 53 on the plate 44 is used to detect whether the upper layer of the ladder body has been built; the travel switch 54 on the outermost side of the ladder pumping plate 44 track is used to detect whether the ladder pumping plate 44 is fully stretched out; Travel switch 55 on the wall is used to detect whether the ladder body recovery process reaches the horizontal position. In addition, there is a travel switch 50 on the ground base, which is used to detect whether the ladder body put down on the second floor is completed.

The PLC output drives the coil of the contactor, thereby changing the topology of the main circuit through the contact switch of the contactor, realizing the control of the running state of the dragging motor, and then realizing the control of the main body of the escape ladder. As shown in Figure 7, the contacts of the contactor KM61 and the contacts of the contactor KM62 control the forward rotation and reverse rotation of the elevator motor 41 respectively; change. The contact of contactor KM61 is closed, the contact of contactor KM62 is opened, the elevator motor 41 rotates forward, the elevator rotating shaft 43 rotates forward, and the free end of the ladder body descends; the contact of contactor KM62 is closed, and the contact of contactor KM61 is disconnected. Put ladder motor 41 counter-rotating, put ladder rotating shaft 43 counter-rotating, ladder body free end is promoted upwards. The contacts of contactor KM63 are closed, the contacts of contactor KM64 are disconnected, the pumping board motor 42 rotates forward, and the pumping board 44 of the ladder is pulled away, so that the free end of the ladder body can be put down; the contacts of contactor KM64 are closed, and the contacts of contactor KM63 Disconnect, the pumping board motor 42 reverses, and the ladder pumping board 44 stretches out to provide support for the free end of the ladder body. Moreover, the contacts of the contactor KM61 and the contactor KM62 are not allowed to be closed at the same time, and the contacts of the contactor KM63 and the contactor KM64 are not allowed to be closed at the same time, which is easy for technicians to realize. The KM65 contact of the contactor is located on the main road. When the KM65 contact of the contactor is opened, both the elevator motor and the ejector motor will lose power and stop, which is used to control the emergency stop of the elevator process.

As shown in Figure 8, the indicator lights and operation buttons are set on the control panel, which are used to realize the control of the PLC by personnel and the indication of the operating status of the PLC. The control panel is installed near the landing to control the operation of the system and indicate the working status of the system, and each floor has a control panel with the same function, which can control the operation of the ladder body from each floor. The indicator lights on the control panel include from left to right the power indicator light, the drawing plate indicator light, the elevator setting indicator light, the elevator retracting indicator light, the construction completion indicator light and the emergency stop indicator light. The operation buttons on the control panel include an emergency switch (master switch), a confirmation button, an emergency stop button and an elevator recovery button arranged from left to right. Moreover, when the device is activated by the confirmation button on the control panel of a certain floor, only the emergency stop button will work on the control panels of other floors; the lift button will only work after the ladder body is built.

The escape sign in the building is a luminous warning sign, which is directly driven by the PLC output. It is located in an appropriate position in the building. When the escape ladder is built, the signboard in the building will flash to remind people that they can escape through the escape ladder and provide guidance for people to go to the boarding place.

Concrete operation and running process of the present utility model are as follows:

When in use, turn on the emergency switch on the control panel, the system supplies power, enters the preparation mode, and the power indicator is always on. Press the confirmation button, the system enters the fully automatic mode and starts running. At first the relay 7 is energized, and the ladder locking mechanism 34 is opened, so that the ladder body in the standing state on the roof of the building is turned outwards under the effect of its own gravity and spring tension. After the ladder body turns over to the horizontal position and touches the travel switch 51, the pumping plate motor 42 rotates forward, the pumping plate indicator light is always on, and the ladder pumping plate 44 starts to be drawn away. When the lifting plate 44 is pulled out to the designated position, the travel switch 52 located at the end of the stroke of the lifting plate is touched, the plate pumping motor 42 is reversed, the lifting plate 44 is stretched out, and the motor 41 is rotating forward at the same time , the ladder body is lowered by dragging the ladder body through the ladder rotating shaft 43, and the ladder indicator light is always on. Put ladder and draw out plate 44 and touch travel switch 54 after fully stretching out state, draw out plate motor 42 and stop, draw out plate indicator lamp and go out. After the ladder body is lowered to the lower ladder lifting plate 44 or the ground base 34, it is automatically locked by the mechanical self-locking device 440 or 330 on it, and when it touches the travel switch 53, the ladder motor 41 stops, and the ladder indicator light When it goes out, the escape indication sign in the building is energized and flickers, reminding the building personnel that the escape ladder on the outer wall is available, and they can escape from this escape channel. In addition, all motors can be stopped by pressing the emergency stop button at any moment in the process of lowering the elevator, and the emergency stop indicator light is lighted; Continue to run according to the previous procedure, and the emergency stop indicator light goes out.

Press down the ladder retracting button, the elevator retracting indicator light is always on, firstly, the elevator motor 41 reverses, the ladder body is lifted upwards, the horizontal fixed cross bar 12 leaves the mechanical self-locking mechanism, and at the same time leaves the travel switch 53, and the travel switch 53 changes state , the PLC system controls the reverse rotation of the pumping board motor 42, and the ladder pumping board 44 starts to be pulled out. When putting the ladder and drawing out the plate 44 to the innermost side, it touches the travel switch 52, and the drawing plate motor stops. After the ladder body was lifted to the horizontal position, the travel switch 55 was touched, and the ladder motor 41 stopped, and the pumping plate motor 42 rotated forward, and the ladder pumping plate 44 began to stretch out. At this time, the lift motor 41 has lifted the ladder body to a horizontal state. After the lift lift plate 44 is fully stretched out, it touches the travel switch 54, the lift plate motor 42 stops, the indicator lamp for retracting the ladder goes out, and the lift lift plate 44 is a ladder. body provides support. Afterwards, the ladder body is turned over from the horizontal state to the guardrail shape by the traction device outside the device, and the ladder body is locked by the lock body mechanism 34 by relevant personnel, and the turning support bar is returned to the initial position.

After the escape ladder is built, the personnel on each floor of the building can climb the ladder from the fixed end horizontal support platform 31 of the floor, escape to the lower floor free end horizontal support platform 32 through the ladder body, and then enter the ladder passage 35, and go to the elevator through the ladder passage 35. The horizontal support platform 31 at the fixed end of this layer continues to escape to the lower floor until it leads to the ground.

In addition, the horizontal support platform on each floor of the building body is aligned up and down, and the length of the ladder drawer 44 is long enough to pass through when the ladder body is in a horizontal state, and it is enough to draw in the ladder when the ladder is fully retracted. After the board stretches out, it provides support for the ladder body laid down on the upper floor. In this embodiment, the height of each floor is 4 meters, and the horizontal span of the ladder is 8 meters after the ladder is built. The length of the pumping board needs to be more than 0.95 meters.

It should be emphasized that the embodiments described in the utility model are illustrative rather than restrictive, so the utility model includes but not limited to the embodiments described in the specific implementation, and those skilled in the art according to the utility model Other implementations derived from the new technical solution also belong to the scope of protection of the utility model.

Claims (9)

1. A new type of building-mounted escape ladder, characterized in that: it is composed of an escape ladder structural part, an electrical driving part, and an electrical control system, wherein: The structural part of the escape ladder includes a ladder body, a flip support device and an auxiliary support device. The ladder body is composed of a ladder body main frame, a horizontal fixed cross bar, and a ring of a fixed end flip support device. The horizontal fixed cross bar is located at the end of the ladder body. The ring of the overturning support device at the fixed end of the ladder body is arranged at the bottom of the fixed end of the main frame of the ladder body; the overturning support devices are evenly distributed on the outer wall of the building, and each overturning support device is composed of a rotating shaft, a deceleration mechanism and a support rod , the rotating shaft is connected with the deceleration device and fixed on the outer wall of the building. One end of the support rod is fixed on the rotating shaft. Installed in the groove formed at the bottom of the ladder body; the auxiliary supporting device includes a fixed-end horizontal support platform, a free-end horizontal support platform, a ground base, a locking mechanism, and a ladder-releasing channel. The fixed-end horizontal support platform is located at On the outer wall of the building at the fixed end of the ladder body, the free end horizontal support platform is located on the outer wall of the building at the free end of the ladder body, and the elevator motor, the pumping plate motor, the ladder rotating shaft and the ladder pumping plate are installed on the free end horizontal support platform, The ground base is installed on the ground, and the locking mechanism is located on the roof or near the ladder body in the ladder channel to keep the ladder body in the shape of a guardrail when it is in a normal state. The ladder channel is set on the edge of each floor; The electrical dragging part includes a ladder motor, a pumping board motor, a ladder rotating shaft, a ladder pumping board and a ladder rope. The rotating shaft and the ladder-releasing pumping plate; the ladder-releasing rotating shaft is fixed above the horizontal support platform at the free end, and the ladder-releasing pumping plate is located at the edge of the free end horizontal supporting platform close to the side of the ladder body; the ladder-releasing rope is wound on the ladder-releasing rotating shaft, and the free end is fixed On the horizontal fixed bar, the ladder-releasing rotating shaft drags the ladder body to move through the ladder-releasing rope; The electrical control system includes the power supply part and the PLC control system. The PLC control system includes PLC, travel switch, indicator light, operation button, contactor, relay and escape indicator signs in the building; the travel switch and operation button are connected to the input terminal of the PLC. The coil of the device, the relay, the indicator light, and the escape indicator in the building are connected with the PLC output terminal. 2. A new type of escape ladder outside the building according to claim 1, characterized in that: the horizontal support platform at the fixed end is provided with a mechanical self-locking mechanism, so that the turning support device at the fixed end of the ladder body can It can be fixed; the said lifting plate is provided with a mechanical self-locking mechanism for fixing the ladder body when the upper ladder body is placed on the lower lifting plate; the ground base is provided with a mechanical self-locking mechanism, Make the horizontal fixed cross bar at the free end of the ladder fall into the corresponding groove of the mechanical self-locking mechanism to be fixed. 3. A new type of building-mounted escape ladder according to claim 1, characterized in that: said locking mechanism is controlled by a relay installed on the roof. 4. A new type of building-mounted escape ladder according to any one of claims 1 to 3, characterized in that: the power supply part includes 380V three-phase alternating current and 220V two-phase alternating current, and the 380V three-phase alternating current is directly used to release the elevator The motor and pumping board motor are powered, and the 220V two-phase alternating current is rectified by the rectifier module to supply power for the PLC control system. 5. A novel building-mounted escape ladder according to any one of claims 1 to 3, characterized in that: the travel switch is used to collect the position information of the ladder body and input it to the PLC, and each ladder body is equipped with The five travel switches are respectively located on the horizontal support platform at the fixed end, the innermost side of the ladder-releasing drawer track, the ladder-releasing drawer plate, the outer side of the ladder-releasing drawer track and the outer wall at the horizontal position of the ladder body. 6. A novel building-mounted escape ladder according to any one of claims 1 to 3, characterized in that the PLC controls the operating states of the elevator motor and the pumping motor through the contacts of the contactor, wherein , contactor KM61 contact and contactor KM62 contact respectively control the forward rotation and reverse rotation of the elevator motor; contactor KM63 contact and contactor KM64 contact respectively control the forward rotation and reverse rotation of the pumping motor 42; The point is located on the main road and is used to control the emergency stop of the elevator process. 7. A new type of building-mounted escape ladder according to any one of claims 1 to 3, characterized in that: the indicator lights and operation buttons are set on the control panel, and the control panel is installed near the entrance of each floor . 8. A new type of escape ladder built outside a building according to claim 7, wherein the indicator lights include a power indicator light, a drawer indicator light, a ladder release indicator light, a ladder retraction indicator light, and a construction completion indicator light and an emergency stop indicator light; the operation buttons include an emergency switch, a confirmation button, an emergency stop button and an elevator take-up button. 9. A novel building-mounted escape ladder according to any one of claims 1 to 3, characterized in that: the horizontal support platforms on each floor of the building body are aligned up and down, and the length of the drawer plate can make the ladder body of this floor level In the state, it can pass when the ladder drawer is fully retracted, and can also provide support for the ladder body lowered on the upper floor after the ladder drawer is stretched out.