Elevator guide rail verticality detection system based on car vertical movement

Abstract

The elevator guide rail verticality detection system based on car vertical movement comprises a seat plate, a distance measuring sensor, a vertical guide rod, a controller and a prompt device; the seat plate is slidingly arranged on the vertical guide rod and is driven by a car; the distance measuring sensor is arranged on the seat plate and is used for detecting the distance from the guide rail surface and sending the distance information to the controller; the controller judges the distance information and controls the prompt device to issue a prompt when the detected distance changes with the car movement. By measuring the distance from the guide rail surface in real time, the guide rail verticality problem is found in time, and the occurrence of elevator safety accidents is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of furniture fittings, in particular to an elevator guide rail verticality detection system based on car vertical movement. BACKGROUND

[0002] The existing elevators all ensure the verticality of the guide rail in the early guide rail installation stage, and do not monitor the verticality of the guide rail in a long period of time afterwards, and at most only detect the verticality of the guide rail in the regular maintenance stage every half year or year.

[0003] After long-term operation of the elevator, there is a hidden danger that the verticality of the guide rail changes greatly due to non-normal conditions such as missing of the bolt, loosening of the nut or slipping of the screw, and this hidden danger is difficult to be discovered in time, and in this case, the elevator is operated again, which has a relatively large safety hazard. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an elevator guide rail verticality detection system based on car vertical movement, which detects the distance from the guide rail surface in real time, discovers the verticality problem of the guide rail in time, and reduces the occurrence of elevator safety accidents.

[0005] The elevator guide rail verticality detection system based on car vertical movement comprises a seat plate, a distance measuring sensor, a vertical guide rod, a controller and a prompt device, the seat plate is slidingly arranged on the vertical guide rod and is driven by the car, the distance measuring sensor is arranged on the seat plate and is used for detecting the distance from the guide rail surface and sending the distance information to the controller, and the controller judges the distance information and controls the prompt device to issue a prompt when the detected distance changes with the movement of the car.

[0006] Preferably, a driving structure is arranged on the car, the driving structure comprises a driving plate arranged below the seat plate and supporting the seat plate, the seat plate comprises a seat plate base body and a protruding point part arranged on the seat plate base body and in contact with the driving plate, and the protruding point part can move and rotate relative to the seat plate.

[0007] Preferably, the protruding point part and the seat plate are in rolling contact.

[0008] Preferably, the driving structure further comprises an upper baffle arranged above the driving plate and used for blocking the seat plate.

[0009] Preferably, the number of the distance measuring sensors is two, and the distance measuring sensors are distributed on both sides of the guide rail.

[0010] Preferably, the controller is further in communication connection with an elevator control computer, and sends a nearest floor stop command to the elevator control computer when the detected distance changes with the movement of the car.

[0011] Preferably, the prompting device comprises an alarm device, a display device.

[0012] In summary, the present application has the following advantages:

[0013] 1: The present application can find the problem of guide rail perpendicularity in time by measuring the distance to the guide rail surface in real time, and reduce the occurrence of elevator safety accidents.

[0014] 2: The present application can prevent false detection and ensure the use experience of the elevator by setting the support seat plate and the driving plate 41 which can move and rotate relative to the seat plate 1 to drive the seat plate. Also, it can prevent the size of the vertical guide rod 3 from being too large, so that the cost of the elevator is controllable and the installation is relatively convenient.

[0015] 3: The controller of the present application is also in communication connection with the elevator control computer. When the detected distance changes with the movement of the car, it also sends the closest floor stop command to the elevator control computer. It not only realizes timely braking, but also prevents people from being trapped in the elevator and reduces the occurrence of safety accidents. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the installation diagram of each component in the hoistway in the elevator guide rail perpendicularity detection system.

[0017] Figure 2 It is the assembly diagram between the seat plate and the driving structure.

[0018] Figure 3 It is the connection of each electronic element in the elevator guide rail perpendicularity detection system Figure 1 .

[0019] Figure 4 It is the connection of each electronic element in the elevator guide rail perpendicularity detection system Figure 2 . DETAILED DESCRIPTION

[0020] The present application will be further described below by combining with the drawings and through specific embodiments.

[0021] Embodiment: Figures 1-3The application discloses an elevator guide rail verticality detection system based on car vertical movement, which comprises a seat plate 1, a distance measuring sensor 2, a vertical guide rod 3, a controller and a prompt device 5. The vertical guide rod 3 is installed in a hoistway and is located at the side of the car. The seat plate 1 is slidably arranged on the vertical guide rod 3 and is driven by the car. The distance measuring sensor 2 is arranged on the seat plate 1 and moves with the movement of the seat plate 1. The distance measuring sensor 2 determines the distance from the guide rail surface in real time during the movement and sends the distance information to the controller in communication connection with the distance measuring sensor 2. After receiving the signal, the controller judges the distance information. When the detected distance changes with the movement of the car, it is determined that the guide rail verticality has a problem. The controller controls the prompt device to give a prompt. The prompt device 5 can be an alarm device, preferably a voice alarm device, which informs the elevator user of the situation through the alarm prompt. The prompt device 5 can also be a display device, which directly displays the measurement result of the guide rail verticality on the display device. The prompt device 5 can be installed in the car.

[0022] In the elevator guide rail verticality detection system, the distance from the guide rail surface is determined in real time, the guide rail verticality problem is found in time, and the occurrence of elevator safety accidents is reduced. Moreover, the movement of the car itself is utilized to realize the detection, and an additional power structure is not needed to realize the movement of the seat plate 1 and the distance measuring sensor 2, so that the structure of the elevator is simplified, and the energy consumption of the elevator is reduced.

[0023] When the car is assembled on the guide rail by guide shoes, there is usually a gap of 1-2mm between the guide shoes and the guide rail. When the elevator car is used improperly, for example, jumping in the car, carrying heavy objects with a biased center of gravity, the car is offset or deflected forward, backward, left or right. When the car is offset or deflected, the vertical guide rod 3 is pressed to cause the vertical guide rod 3 to bend and deform, which often causes false detection and seriously affects the use of the elevator. Therefore, the application sets a driving structure 4 on the car, which includes a driving plate 41 located below the seat plate 1 and supporting the seat plate 1. The seat plate 1 includes a seat plate base body 11 and a protruding point part 12 arranged on the seat plate base body 11 and in contact with the driving plate 41. The protruding point part 12 protrudes downward from the bottom surface of the seat plate base body 11. The entire seat plate 1 only contacts the driving plate 41 through the protruding point part 12. When the driving plate 41 rises with the car, it drives the seat plate 1 to move upward. When the driving plate 41 is offset, it moves on the protruding point part 12. When the driving plate 41 is deflected, it rotates on the protruding point part 12. Therefore, whether the car is offset or deflected, it will not cause great pressure on the seat plate 1, so as to prevent the vertical guide rod 3 from being pressed to bend and deform, prevent false detection, and ensure the use of the elevator. In addition, the applicant additionally points out that the traditional way to prevent the vertical guide rod 3 from deforming is to increase the size of the vertical guide rod 3 to make the structural strength of the vertical guide rod 3 greater, thereby achieving the purpose of preventing the vertical guide rod 3 from deforming. The traditional way poses great challenges to the size, cost and installation of the vertical guide rod 3. The application is the preferred way selected by the applicant through a large number of tests. By setting the driving plate 41 that can move and rotate relative to the seat plate 1, the force is reduced to the vertical guide rod 3 to prevent the vertical guide rod 3 from deforming, so that the size of the vertical guide rod 3 does not have to be set too large, the cost of the elevator is controllable, and the installation is also relatively convenient.

[0024] The driving structure 4 described above further includes an upper baffle 42 arranged above the driving plate 41 and used for blocking the seat plate 1. The upper baffle 42 can play a dust blocking role to prevent dust from accumulating on the driving plate 41.

[0025] Preferably, the protruding point part 12 and the seat plate 1 are in rolling contact, so that the driving plate 41 moves or rolls on the protruding point part 12 with small resistance. The protruding point part 12 can be a ball part embedded in the seat plate base body 11.

[0026] In the embodiment, the distance measuring sensors 2 are in two groups, distributed on both sides of the guide rail, the guide rail has two guide rail surfaces, each guide rail surface corresponds to one distance measuring sensor 2, and the two groups of distance measuring sensors 2 are respectively used to detect the distance from the corresponding guide rail surface, so that the perpendicularity of the two guide rail surfaces on the guide rail can be monitored.

[0027] There are also some extreme cases, before the elevator runs, the perpendicularity of the guide rail is normal, during the running of the elevator, the perpendicularity of the elevator appears problems, in order to prevent safety accidents, the elevator should stop moving immediately, but at this time there are people in the elevator car, the immediate stop of the elevator will cause people to be trapped in the elevator, which will also cause safety hazards, therefore, preferably, referring to Figure 4 The controller is also in communication connection with the elevator control computer, and sends the nearest floor stop command to the elevator control computer when the detected distance changes with the movement of the car. The elevator in normal movement increases or decreases the count in the elevator control computer by one every time it passes a magnetic plate, so as to determine the floor. Under this premise, when the elevator control computer receives the nearest floor stop command, the elevator control computer will control the elevator to stop at the floor corresponding to the next magnetic plate installed in the shaft after the car passes the magnetic plate, so as to realize stopping the elevator at the nearest floor, instead of stopping after transporting the people to the target floor, which realizes timely braking and prevents people from being trapped in the elevator, and reduces the occurrence of safety accidents.

[0028] The above-described embodiments are only to describe the preferred embodiments of the present application, and not to limit the concept and scope of the present application. Any modification and improvement of the technical solutions of the present application made by those skilled in the art without departing from the design concept of the present application shall fall within the protection scope of the present application, and the technical content of the present application claimed for protection has been fully recorded in the claims.

Claims

1. Elevator guide rail verticality detection system based on car vertical movement, characterized in that, The application relates to an elevator distance detection device, which comprises a seat plate (1), a distance detection sensor (2), a vertical guide rod (3), a controller and a prompt device (5); the seat plate (1) is slidably arranged on the vertical guide rod (3) and is driven by a car; the distance detection sensor (2) is arranged on the seat plate (1) and is used for detecting the distance between the seat plate (1) and a guide rail surface and sending distance information to the controller; the controller judges the distance information and controls the prompt device (5) to give a prompt when the detected distance changes with the movement of the car; A driving structure (4) is arranged on the car, the driving structure (4) comprises a driving plate (41) arranged below the seat plate (1) and supporting the seat plate (1); the seat plate (1) comprises a seat plate base body (11) and a protruding point part (12) arranged on the seat plate base body (11) and in contact with the driving plate (41); the protruding point part (12) can move and rotate relative to the seat plate (1); the whole seat plate (1) only relies on the protruding point part (12) to be in contact with the driving plate (41).

2. The car vertical motion based elevator guide rail straightness detection system according to claim 1, characterized in that, The protruding point part (12) and the seat plate (1) are in rolling contact, and the protruding point part (12) is a rolling ball part.

3. The car vertical motion based elevator guide rail verticality detection system of claim 1, wherein, The driving structure (4) further comprises an upper baffle plate (42) arranged above the driving plate (41) and used for blocking the seat plate (1).

4. The car vertical motion based elevator guide rail verticality detection system according to claim 1, characterized by, The distance detection sensor (2) is in two groups and is distributed on both sides of the guide rail.

5. The car vertical motion based elevator guide rail verticality detection system according to claim 1, characterized by, The controller is further in communication connection with an elevator control computer and sends a nearest floor stop command to the elevator control computer when the detected distance changes with the movement of the car.

6. The car vertical motion based elevator guide rail straightness detection system according to claim 1, characterized in that, The prompt device (5) comprises an alarm device and a display device.

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