Passenger safety monitoring and protection system in quick-install elevators

Abstract

The present invention provides a passenger safety monitoring and protection system in a quick-install elevator, and its shock absorbing system includes a buffer plate installed at the bottom of the box body and capable of sliding vertically along the inner wall of the box body. The buffer plate is supported on the bottom plate of the box body by a number of heavy springs, and a number of locking pins are provided on the side of the buffer plate. If the elevator is overspeeding due to an accident, the locking pins pass through the side wall of the box body through a gear rack pair under the action of a driving motor and extend into the buffer plate. Both ends of the rectangular tube of the car bottom plate have a rectangular tube-shaped plug connector; two third rectangular tubes are provided in parallel between the first rectangular tube and the second rectangular tube, and the larger plug connector of each third rectangular tube is inserted into and extends out of the plug hole of the first rectangular tube, and the smaller plug connector is inserted, and a locking nut is screwed on one end of the third rectangular tube extending out of the plug hole of the first rectangular tube. The passenger safety monitoring and protection system in the quick-install elevator has good safety protection and the assembly efficiency has also been improved to a certain extent.

Description

Technical Field

[0001] The present invention relates to the technical field of elevators, and more particularly to an elevator system structure with a quick-detachable bottom plate and good safety protection. Background Art

[0002] Elevators are generally equipped with safety protection devices, but elevators are special equipment that operate at high altitudes. Although the current protection devices are highly automated, they rely too much on complex sensors, PLCs and other automated electrical components. Once a failure occurs in execution, it is difficult to control manually. The more sophisticated and complex the automatic control system, the more difficult it is to deal with a system failure in a timely manner, and it is even more difficult for passengers to respond to emergencies and save themselves. As for the safety of the passengers, it is mainly reflected in the fact that if the elevator loses control when descending, it will cause huge impact injuries to people.

[0003] First of all, the current elevators all have a shock absorption system. The traditional shock absorption is mainly reflected in the shock absorption of the elevator car itself. The shock absorption system is installed on the outer surface of the bottom of the car, mainly for the car to fall and land smoothly, and there is no particularly effective buffering and shock absorption measures for the passengers inside the car. When the elevator is working, it often falls due to accidents. Sometimes it falls directly to several floors and stops. In serious cases, the passenger safety monitoring and protection system in the quick-install elevator will fall directly to the bottom of the well. Under the impact caused by the huge falling speed, it is easy to cause serious injuries to the passengers. Although the current elevators all have speed limiting devices, it is still possible that the falling speed of the entire car cannot be controlled when the speed limiter fails, resulting in a high-speed fall. Although some elevators are equipped with handles for passengers to grasp when the elevator falls sharply, the rigidly connected handles held by passengers under the huge impact are still easy to be shaken out of the hands under the huge impact at the moment of landing, and the impact force is difficult to release as much as possible. These are undoubtedly great safety hazards for the passengers.

[0004] Secondly, when passengers are riding in an elevator, they often encounter a situation where a passenger is alone. If an accident occurs to a passenger in the elevator, such as fainting, and the accident cannot be discovered in time, it will cause immeasurable consequences. In addition, in the current shaft-type elevator, the car needs to be assembled after the shaft is arranged. Due to the large size of the car, the passenger safety monitoring and protection system in the quick-install elevator is often brought to the site for assembly. When the passenger safety monitoring and protection system in the existing quick-install elevator is assembled, the frame of the car floor is usually a rectangular frame structure, connected by four steel beams, and the four steel beams are usually made of Figure 4The structural installation shown, that is, many bolts are used to connect in multiple places through rib plates or angle steel bolts. There are many process steps and many bolts need to be installed, resulting in extremely long assembly time and low efficiency. Moreover, it is difficult to ensure the tightening degree of each bolt due to the excessive number of bolts, and there are more holes on the steel beam, which makes it difficult to control the quality of bolt connection. As a result, although the bolts are tightened more, the structure may not be stable. During the vibration process of the car moving up and down frequently, the car is prone to local deformation, resulting in the main force being transferred to individual bolts. Although the assembly using welding is faster and does not require the positioning of the installation holes, the welding operation is dangerous and difficult. In addition, the steel beam itself is large in size, and the weld or weld scar must be large in size. The thermal deformation effect of welding on the car floor cannot be ignored. Without high-level welding workers and welding equipment to ensure the welding quality, it is undoubtedly a potential threat to the safety of elevator users. Therefore, the installation of the car, especially the installation structure of the floor, is not only one of the factors related to the assembly efficiency of the elevator, but also determines the safety and reliability of the elevator itself to a certain extent.

[0005] In summary, there are still many areas in the current elevators that need further improvement. The monitoring and protection of occupant safety and assembly efficiency should continue to be optimized in design to more fully compensate for the current shortcomings of insufficient safety protection and complex installation process of elevators. Summary of the invention

[0006] The problem to be solved by the present invention is to provide a passenger safety monitoring and protection system in a quick-install elevator in response to the above-mentioned deficiencies in the prior art. The passenger safety monitoring and protection system in the quick-install elevator solves the technical problems in the prior art that the safety protection of the elevator is not high enough and the installation process is complicated.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A passenger safety monitoring and protection system in a quick-install elevator, comprising a box body, a shock absorbing system installed in the box body, and a handle for a person to hold, the box body comprising a car floor assembled from four steel beams, the shock absorbing system comprising a buffer plate installed at the bottom of the box body and capable of vertically sliding along the inner wall of the box body, the buffer plate being supported on the box body floor by a plurality of heavy springs, and a plurality of locking pins being cooperatively arranged on the side of the buffer plate, when the elevator is accidentally overspeeding, the locking pins are extended into the buffer plate through the side wall of the box body through a gear rack pair under the action of a driving motor, and when the elevator speed exceeds the rated transport speed, the driving motor is reversed so that the locking pins are withdrawn from the buffer plate and the buffer plate is suspended and lifted up by the heavy springs;

[0009] The steel beam is a rectangular tube, and there are three types of rectangular tubes. The first rectangular tube and the second rectangular tube each have a plug hole at both ends thereof that penetrates along the width direction of the rectangular tube; both ends of the third rectangular tube have a rectangular tube-shaped plug connector, which is coaxially and integrally arranged at the end of the third rectangular tube in the form of a boss, and the two plug connectors have different pipe diameters;

[0010] Two third rectangular tubes are arranged in parallel between the first rectangular tube and the second rectangular tube, the larger plug connector of each third rectangular tube is inserted into and extends out of the plug hole of the first rectangular tube, and the smaller plug connector is inserted into and does not extend out of the plug hole of the second rectangular tube, so that the four rectangular tubes form a rectangular frame structure, and a locking nut is screwed on one end of the third rectangular tube extending out of the plug hole of the first rectangular tube, and a conical pin is embedded at the outer end surface of the locking nut so as to penetrate the rectangular tube, and the side surface of the conical pin is tightly pressed against the end surface of the locking nut;

[0011] It also includes a locking block formed by a rectangular limiting plate and a rectangular plug-in column, the plug-in column is vertically located in the center of the limiting plate so that the locking block is in a T-shaped structure, the size of the locking block is such that it can slide into the third rectangular tube from the pipe hole of the larger plug-in connector toward the side of the smaller plug-in connector, and the plug-in column is inserted into the pipe hole of the smaller plug-in connector, and the locking bolt is coaxially screwed into the plug-in column from the outside of the second rectangular tube through the plug-in hole of the second rectangular tube;

[0012] It also includes a monitoring element installed inside the box body and capable of monitoring whether the occupant is moving. The monitoring element sends out an alarm command when it detects that the occupant is stationary for a certain period of time.

[0013] Compared with the prior art, the present invention has the following beneficial effects: after the buffer plate of the present invention is pushed out by the heavy spring, if the car falls at high speed, the people standing on the buffer plate will move down together, but during the movement, due to the elastic force of the heavy spring, the impact of the occupants after falling can be greatly reduced, and the safety of the occupants can be fully protected. This structural design, as another important actuator of the occupant safety monitoring and protection system in the quick-install elevator, can be used together with the above-mentioned retractable handle structure to greatly improve the safety of the occupants during emergency high-speed falls and minimize personal injuries to the occupants.

[0014] In addition, the present invention also uses three special rectangular tubes to complete the assembly through two larger high-strength bolts, two high-strength nuts and two tapered pins. In particular, the hollow convex falcon structures at both ends of the third rectangular tube make the socket connection quick and reliable. The locking block, one of the core connection components, can enter from one end of the third rectangular tube and move inside the rectangular tube to the other end. With the cooperation of the locking bolts, the first, second and third rectangular tubes are quickly and firmly connected as one through the T-shaped pull-pull structure. During inspection, there are fewer connecting parts, which is convenient for manual inspection, greatly simplifies the assembly process, and improves assembly efficiency. It is particularly suitable for small and medium-sized home elevators.

[0015] Finally, a monitoring component is installed in the elevator for the first time to monitor the activities of passengers. If a passenger is found to be motionless for a long time, an alarm will be sounded to remind the relevant staff to check and handle the situation. This functional design is especially necessary for places such as hospitals and nursing homes.

[0016] The integration of the above structures can not only improve the assembly efficiency of the elevator itself to a certain extent, but also play a good detection and protection role, greatly improving the safety and comfort of the entire elevator, especially the safety performance, which is greatly improved compared with existing elevators.

[0017] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the shock absorbing system of the present invention;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram at I in the middle;

[0020] Figure 3 This is a schematic diagram of the buffer plate being ejected;

[0021] Figure 4 It is a schematic diagram of the existing car floor frame;

[0022] Figure 5 It is a schematic diagram of the structure of the present invention;

[0023] Figure 6 Schematic diagram of the third rectangular tube structure;

[0024] Figure 7 It is a schematic diagram of the connection structure between the smaller plug connector of the third rectangular tube and the second rectangular tube;

[0025] Figure 8 It is a schematic diagram of the locking block structure;

[0026] Fig. 9 It is a schematic diagram of the structure of the plug-in hole at the end of the second rectangular tube;

[0027] Fig.10 It is a schematic diagram of the structure of the buffer handle of the present invention.

[0028] Among them, the car 1, the handle tube 2, the right-angle elbow 3, the vertical pipe section 4, the fixing ring 5, the fixing cover 6, the arc spring 7, the sliding column 8, the elastic sleeve 9, the cylindrical spring 10, the buffer plate 11, the heavy spring 12, the motor 13, the locking pin 14, the rack 15, the gear 16, the first rectangular tube 100, the second rectangular tube 200, the third rectangular tube 300, the locking nut 400, the conical pin 500, the locking block 600, the locking bolt 700, the slider 800, the spring 900, the handle 101, the first hole section 201, the second hole section 202, the third hole section 203, the fourth hole section 204, the larger plug 301, and the smaller plug 302. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0030] like Figure 1 As shown in FIG. 2 , a passenger safety monitoring and protection system in a quick-install elevator includes a box body and a shock absorbing system installed in the box body and a handle for a person to hold. The box body includes a car floor assembled from four steel beams. The shock absorbing system at the bottom of the box body, see Figure 1 and Figure 2 It mainly includes a buffer plate 11 installed at the bottom of the box body and can slide vertically along the inner wall of the box body. The buffer plate 11 is supported on the box body bottom plate (which can be directly the car bottom plate) by a number of heavy springs 12, and a number of locking pins 14 are provided on the side of the buffer plate 11. When the elevator overspeeds due to an accident, the locking pins 14 pass through the side wall of the box body through the gear rack pair under the action of the drive motor 13 and extend into the buffer plate 11. When the elevator speed exceeds the rated transport speed, the drive motor 13 reverses to make the locking pins 14 withdraw from the buffer plate 11 and the buffer plate 11 is suspended by the heavy springs 12. In this embodiment, the drive of the motor 13 can be realized by using a common sensor, such as a speed sensor of the elevator itself, which detects the up and down moving speed of the elevator. When the speed exceeds the limit, the motor 13 is driven to rotate through the corresponding control system, driving the gear 16 to rotate, so that the rack 15 moves, and the locking pin 14 fixed on the rack 15 can be disengaged from the buffer plate 11, thereby releasing the buffer plate 11. Figure 3 After the buffer plate 11 is pushed out by the heavy spring 12, if the car 1 falls at high speed, the person standing on the buffer plate 11 moves down together. However, during the movement, the elastic force of the heavy spring 12 can greatly reduce the impact of the passengers after falling, fully protecting the passengers. This structural design, as another important actuator of the passenger safety monitoring and protection system in the quick-install elevator, can work together with the above-mentioned retractable handle structure to greatly improve the safety of passengers during emergency high-speed falls and minimize personal injuries to passengers.

[0031] For the car floor structure adopted in the above-mentioned embodiment, the steel beam is a rectangular tube that is generally similar to an ordinary rectangular tube but has special structures at both ends. There are three types of the rectangular tubes. The first rectangular tube 100 and the second rectangular tube 200 each have a plug hole penetrating along the width direction of the rectangular tube at both ends; both ends of the third rectangular tube 300 have a rectangular tube-shaped plug connector, which is coaxially and integrally arranged at the end of the third rectangular tube 300 in the form of a boss, and the tube diameters of the two plug connectors are different. In this embodiment, two third rectangular tubes 300 are arranged in parallel between the first rectangular tube 100 and the second rectangular tube 200. The larger plug connector of each third rectangular tube 300 is inserted into and extends out of the plug hole of the first rectangular tube 100, and the smaller plug connector is inserted into and does not extend out of the plug hole of the second rectangular tube 200, so that the four rectangular tubes form a rectangular frame structure. A locking nut 400 is screwed on one end of the third rectangular tube 300 extending out of the plug hole of the first rectangular tube 100. A conical pin 500 is embedded in the outer end face of the locking nut 400 through the rectangular tube. The side of the conical pin 500 is tightly pressed against the end face of the locking nut 400, so as to lock the locking nut 400 again and facilitate assembly and disassembly. The rectangular tube section where the locking nut 400 is located can be specially made into a round shape to match the nut, but due to the strength characteristics of the rectangular tube itself and the fact that the larger connector extends out of the plug hole of the first rectangular tube 100 is not subjected to much force, it is usually sufficient to directly process a certain thread on the rectangular tube. The car floor plate can be adaptively matched with the above-mentioned box body as needed. For example, the box body can be directly used as the car, and the car floor plate is the box body bottom plate; or according to the space size and design shape, the car floor plate can be directly fixed to the bottom of the box body to support the box body; the specific connection structure of the two is not described in detail in this embodiment, and the implementation of the present invention does not require limitation on the specific connection structure.

[0032] In particular, in order to achieve a firm and quick connection of the entire frame, a locking block 600 for quick-change connection is specially designed based on the above structural frame, which includes a rectangular limiting plate and a rectangular plug-in column integrally formed, the plug-in column is vertically located in the center of the limiting plate so that the locking block 600 is a T-shaped structure, the size of the locking block 600 should be such that it can slide into the third rectangular tube 300 from the pipe hole of the larger plug-in connector toward the side of the smaller plug-in connector, and the plug-in column is inserted into the pipe hole of the smaller plug-in connector, and the locking bolt 700 is coaxially screwed into the plug-in column from the outside of the second rectangular tube 200 through the plug-in hole of the second rectangular tube 200, thereby achieving overall tightening and connection in the length direction of the third rectangular tube 300. For the selection of the above locking bolt 700, it is preferred to use a large bolt with a higher strength level, and use an electric tool to set the rated torque for tightening.

[0033] Originally, the monitoring and protection system of this embodiment also includes a monitoring element installed inside the box body that can monitor whether the passengers are moving. The monitoring element will issue an alarm command when it detects that the passengers are stationary for a certain period of time. It is mainly used to deal with the situation where the passengers accidentally faint when riding the elevator alone and no one knows about it. This function plays a life-saving role when an accident occurs. Otherwise, if someone faints in the elevator for a long time without being discovered, the passenger will be in great danger.

[0034] When assembling the elevator, firstly, the two third rectangular tubes 300 are inserted into the corresponding plug holes of the first rectangular tube 100 in parallel with each other, and then the smaller plug connectors of the two third rectangular tubes 300 are inserted into the two plug holes of the second rectangular tube 200 to achieve the preliminary forming of the frame, and then the larger plug connector of the third rectangular tube 300 is inserted into the above-mentioned locking block 600, and the locking block 600 is pushed into the hole of the smaller plug connector, and the locking bolt 700 is screwed on to complete all the assembly. The whole process is simple and easy, with fewer parts and components, and it is easy to transport to the site for direct and rapid assembly.

[0035] For the locking block 600, Figure 7 —8, each of the four sides of the limit plate has a slider 800 that can extend out of the limit plate, and when all the sliders 800 are retracted to the limit, the locking block 600 can pass through the tube hole of the larger plug connector, and when entering the interior of the third rectangular tube 300, all the sliders 800 extend out and smoothly and tightly contact the inner surface of the rectangular tube. In this way, the locking block 600 can have a large enough volume to contact the inner wall of the third rectangular tube 300 in the third rectangular tube 300, thereby improving the strength, and it will not be limited to a smaller limit plate size due to the aperture size of the larger connector, which can greatly improve the connection strength, which is particularly important for the locking block 600, one of the core connectors. In order to further optimize the above-mentioned effect, the above-mentioned slider 800 is T-shaped, and its central raised part can be slidably inserted into the blind hole on the side of the limiting plate, and the free end inserted into the blind hole is connected to the bottom of the blind hole through a spring 900 to realize the extension and retraction of the slider 800 on the side of the limiting plate. The two side surfaces of the slider 800 are flush with the two side surfaces of the limiting plate so as to fully fit with the step surface in the third rectangular tube 300.

[0036] In order to facilitate the locking block 600 to enter the larger joint, a "["-shaped handle 101 is provided on the end face of the slider 800 facing the larger plug 301, and four handles 101 are arranged up and down and left and right, so that the worker can press the slider 800 back by hand to enter the larger joint.

[0037] Due to the importance of the locking block 600, the strength of its connection must be high enough, for example, there must be a sufficient threaded connection engagement length, which is not suitable for rectangular tubes and other profiles due to their wall thickness limitations. This is also the difficulty of the current technology and the reason why rib plates, angle steels, etc. are used to connect bolts, the purpose of which is to deepen the threaded holes; however, the insertion column design of the locking block 600 of this embodiment provides a guarantee for the length of the threaded connection. Accordingly, the second rectangular tube 200 at the threaded joint also needs to have a strong structural strength, and the structure here cannot be made too complicated, and it is even more impossible to use extremely thick or even directly solid profiles for strength. For this reason, a special, such as Figure 7 and Fig. 9 The longitudinal section of the plug hole of the second rectangular tube 200 is composed of two mirror-symmetrical F-shaped sections, and the space between the two F-shaped sections constitutes the plug hole of the second rectangular tube 200, so that the plug hole is sequentially divided into the first, second, third, and fourth hole sections from the inside of the second rectangular tube 200 to the outside, and the first and third hole sections are of the same size but not larger than the second hole section 202 and smaller than the fourth hole section 204; the insertion column does not extend into the fourth hole section 204 and the nut of the locking bolt 700 is located in the fourth hole section 204. The structure of the end of the second rectangular tube 200 is designed in this way, so that the connection between the locking bolt 700 and the insertion column has a better connection carrier structure and optimizes the connection strength.

[0038] As a specific embodiment, for the handle in the box, Figure 1 and Fig.10 As shown, it has the following characteristics: the handle includes a horizontally placed handle tube 2 in a "[" shape, the two ends of the handle tube 2 extend vertically upward and have a slide column 8 connected to the end of the handle tube 2 in the form of a boss at the center of each end. The slide column 8 is made into a solid shaft or a hollow tube as required, and the slide column 8 can be slidably extended into the straight pipe section connected to the bottom end of the right-angle bend. The top of the right-angle bend is in the shape of a trumpet that expands outward and is installed in a matching mounting hole on the side wall of the box body. The end of the mounting hole facing the inside of the box body is in the shape of a trumpet to adapt to the shape of the upper end of the right-angle bend, which is convenient for installing the right-angle bend. The end of the mounting hole facing the outside of the box body is in the shape of a cylindrical structure, and the fixing ring 5 is inserted into the circular hole section of the mounting hole and its end face is tightly attached to the end face of the right-angle bend inserted into the mounting hole to press the right-angle bend to achieve fixed installation. The bottle cap-shaped fixing cover 6 is screwed into the side wall of the box body and presses the end face of the fixing ring 5 to fix the fixing ring 5, so as to ensure the fixation of the fixing ring 5 and the right-angle elbow. In this embodiment, it is crucial to further include an arc spring 7 that is bent in the same manner as the right-angle elbow 3, one end of which is fixed to the end face of the slide post 8, and the other end is fixed to the fixing ring 5. The elastic force of the arc spring 7 makes the slide post 8 slide out of the straight pipe section when a person holds the handle pipe 2 and pulls it downward, but never leaves the straight pipe section, so as to achieve buffering and shock absorption in a violent fall when a person holds it.

[0039] As a further specific embodiment, one end of the arc spring 7 is conical, the rest is cylindrical, and the other end has a hook (not shown in the figure) that can be hung on the pull ring (not shown in the figure) fixed on the end surface of the sliding column 8. The large end of the conical section of the arc spring 7 is welded and fixed on the inner wall of the fixing ring 5 to improve the fixed connection strength, and the number of welded sections is not less than three, that is, three circles, so that the connection between the fixing ring 5 and the arc spring 7 is more secure. At the same time, the arc spring 7 with a hook can be detachably hung on the pull ring on the sliding column 8, which can be convenient for installation. The arc spring 7 is inserted from the installation hole into the right-angle elbow and then continues to be hung on the sliding column 8. The hanging between the arc spring 7 and the pull ring on the sliding column 8 should be guaranteed not to fall off. For example, the existing hanging of the hook with a baffle and the ring can ensure that the hook will not be separated from the pull ring.

[0040] Since there is a seam between the vertical pipe section 4 of the right-angle elbow 3 and the vertical extension section of the handle pipe 2, in order to avoid vibration under normal conditions, the gap between the vertical pipe section 4 and the vertical extension section is separated and the hands are pinched, the present embodiment also specially makes the following structure: an elastic member installed between the straight pipe section and the vertical extension section, the elastic deformation of the elastic member must satisfy the handle pipe 2 is always closely connected with the end face of the straight pipe section and the end face of the vertical extension section under a certain downward pulling force, so that even if the handle pipe 2 accidentally moves down a distance under normal conditions, the vertical pipe section 4 and the vertical extension section will not be separated to expose the gap, and the gap will be filled by the deformation recovery amount of the elastic member to avoid the existence of the gap. In order to enhance the gap filling effect and protect the occupants from being pinched, the elastic member includes an elastic sleeve 9 made of elastic rubber, the elastic sleeve 9 has a spiral groove inside, and the cylindrical spring 10 is adapted to the groove so that the cylindrical spring 10 is embedded in the groove.

[0041] In order to better optimize the above protection design structure, a manual control switch for controlling the motor that can be touched by the passengers is also provided in the box. When the passengers find that the elevator is falling in an emergency, they can manually press the corresponding manual control switch to make the buffer plate pop out in advance, so as to prepare for buffering when falling to the bottom floor at high speed. At the same time, it is also to avoid manual emergency handling when the corresponding electrical components such as sensors fail. In addition, when the monitoring element detects that the passengers are stationary for a certain period of time, it will give priority to sending an alarm to the monitoring room to remind the monitoring personnel in the monitoring room to carefully check the monitoring screen. If the passengers are indeed found to be in an unexpected situation of fainting, they will immediately shout to the passengers in the elevator to confirm the situation of the passengers, and when it is known that the passengers are indeed in an unexpected state such as fainting, the Fengming alarm in the car will be activated in advance to help the passengers wake up and wait for rescue.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A passenger safety monitoring and protection system in a quick-install elevator, comprising a box body, a shock absorbing system installed in the box body, and a handle for a person to hold, wherein the box body comprises a car floor assembled from four steel beams, and is characterized in that: The shock absorption system includes a buffer plate installed at the bottom of the box body and capable of sliding vertically along the inner wall of the box body. The buffer plate is supported on the bottom plate of the box body by a plurality of heavy springs, and a plurality of locking pins are provided on the side of the buffer plate in cooperation. If the elevator is overspeeding due to an accident, the locking pins pass through the side wall of the box body through the gear rack pair under the action of the driving motor and extend into the buffer plate. When the elevator speed exceeds the rated transport speed, the driving motor reverses to make the locking pins withdraw from the buffer plate, and the buffer plate is suspended and lifted up by the heavy springs. The steel beam is a rectangular tube, and there are three types of rectangular tubes. The first rectangular tube and the second rectangular tube each have a plug hole penetrating along the width direction of the rectangular tube at both ends thereof; two third rectangular tubes are arranged in parallel between the first rectangular tube and the second rectangular tube, and both ends of the third rectangular tube have a rectangular tube-shaped plug connector, which is coaxially and integrally arranged at the end of the third rectangular tube in the form of a boss, and the diameters of the two plug connectors are different; The larger plug connector of each third rectangular tube is inserted into and extends out of the plug hole of the first rectangular tube, and the smaller plug connector is inserted into and does not extend out of the plug hole of the second rectangular tube, so that the four rectangular tubes form a rectangular frame structure, and a locking nut is screwed on one end of the third rectangular tube extending out of the plug hole of the first rectangular tube, and a conical pin is embedded at the outer end surface of the locking nut so as to penetrate the rectangular tube, and the side surface of the conical pin is tightly pressed against the end surface of the locking nut; It also includes a locking block formed by a rectangular limiting plate and a rectangular plug-in column, the plug-in column is vertically located in the center of the limiting plate so that the locking block is in a T-shaped structure, the size of the locking block is such that it can slide into the third rectangular tube from the pipe hole of the larger plug-in connector toward the side of the smaller plug-in connector, and the plug-in column is inserted into the pipe hole of the smaller plug-in connector, and the locking bolt is coaxially screwed into the plug-in column from the outside of the second rectangular tube through the plug-in hole of the second rectangular tube; It also includes a monitoring element installed inside the box body that can monitor whether the occupant is moving, and the monitoring element sends an alarm command when it detects that the occupant is stationary for a certain period of time; Each of the four sides of the limit plate of the locking block has a slider that can extend out of the limit plate. When all the sliders are retracted to the limit, the locking block can pass through the tube hole of the larger plug connector. When entering the interior of the third rectangular tube, all the sliders extend out and are in smooth and tight contact with the inner surface of the rectangular tube. The slider is T-shaped, and the central raised portion thereof can be slidably inserted into the blind hole on the side of the limiting plate, and the free end thereof inserted into the blind hole is connected to the bottom of the blind hole through a spring to realize the extension and retraction of the slider on the side of the limiting plate, and the two side surfaces of the slider are flush with the two side surfaces of the limiting plate to completely fit with the step surface in the third rectangular tube; The box body is also provided with a manual control switch for controlling the motor which can be touched by the passengers. When the monitoring element detects that the passengers are stationary for a certain period of time, an alarm is given to the monitoring room first.

2. The passenger safety monitoring and protection system in a quick-install elevator according to claim 1 is characterized in that: A "["-shaped handle is also provided on the end surface of the slider facing the larger plug, and four handles are arranged up, down, left and right.

3. The passenger safety monitoring and protection system in a fast-installed elevator according to claim 1 is characterized in that: The longitudinal section of the plug-in hole of the second rectangular tube is composed of two F-shaped sections that are mirror-symmetrical, and the space between the two F-shaped sections constitutes the plug-in hole of the second rectangular tube, so that the plug-in hole is composed of the first, second, third, and fourth hole sections from the inside to the outside of the second rectangular tube, the first and third hole sections are the same size but not larger than the second hole section and smaller than the fourth hole section; the insertion column does not extend into the fourth hole section and the nut of the locking bolt is located in the fourth hole section.

4. The passenger safety monitoring and protection system in a quick-install elevator according to claim 1 is characterized in that: The handle comprises a horizontally placed handle tube in a "[" shape, wherein both ends of the handle tube extend vertically upward and have a sliding column connected to the end of the handle tube in the form of a boss at the center of each end, the sliding column can be slidably extended into a straight tube section connected to the bottom end of the right-angle bend tube, the top end of the right-angle bend tube is in a trumpet shape expanding outward and is installed in a mounting hole adapted thereto on the side wall of the box body, the mounting hole has a trumpet-shaped structure at one end facing the inside of the box body, and has a cylindrical structure at the other end facing the outside of the box body, a fixing ring is inserted into the circular hole section of the mounting hole and its end face is tightly attached to the end face of the right-angle bend tube inserted into the mounting hole, a bottle cap-shaped fixing cover is screwed into the side wall of the box body and presses the end face of the fixing ring; it also comprises an arc spring consistent with the bending of the right-angle elbow, one end of the arc spring is fixed on the end face of the sliding column, and the other end is fixed on the fixing ring, the elastic force of the arc spring makes the sliding column slide out of the straight tube section but never separate from the straight tube section when a person holds the handle tube and pulls it downward.

5. The passenger safety monitoring and protection system in a quick-install elevator according to claim 4 is characterized in that: One end of the arc spring is conical, the rest is cylindrical, and the other end has a hook that can be hung on a pull ring fixed on the end surface of the sliding column. The large end of the conical section of the arc spring is welded and fixed to the inner wall of the fixing ring, and the number of welded sections is not less than three.

6. The passenger safety monitoring and protection system in a fast-installed elevator according to claim 4 is characterized in that: It also includes an elastic member installed between the straight tube section and the upward vertical extension section of the handle tube. The elastic deformation of the elastic member must ensure that the handle tube is always tightly connected with the end face of the straight tube section and the end face of the vertical extension section under a certain downward pulling force.

7. The passenger safety monitoring and protection system in a fast-installed elevator according to claim 6 is characterized in that: The elastic member comprises an elastic sleeve made of elastic rubber, the interior of the elastic sleeve is provided with a spiral groove, and the cylindrical spring is adapted to the groove so that the cylindrical spring is embedded in the groove.

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