Leveling and deceleration control device of lifting equipment

Abstract

The utility model relates to a leveling and deceleration control device for lifting equipment, which belongs to the technical field of elevator equipment and comprises a positioning part connected to a lift car of the lifting equipment, and the positioning part is vertically arranged along the height direction of the lift car; the device further comprises a plurality of sensor groups connected to the lifting equipment fixing guide rail, the number of the sensor groups corresponds to the number of layers of the lifting equipment, the sensor groups correspond to the positions of the positioning parts, and each sensor group comprises an upper sensor and a lower sensor which are distributed up and down. And the distance between the upper sensor and the lower sensor is equal to the length of the positioning part. The two sensors are installed on the fixed guide rails on each layer of the lifting equipment and matched with the positioning magnetic strips moving along with lifting of the lift car, speed reduction control and leveling control can be carried out on the lift car, the accuracy of the stop position on each layer in the ascending or descending process of the lift car is guaranteed, and the safety of the lift car is guaranteed. And potential safety hazards caused by inconsistency of the number of the opened landing door layers and the number of the opened lift car layers can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to a leveling and deceleration control device for lifting equipment. Background Art

[0002] At present, the leveling control methods of home villa elevators on the market mainly include the following types:

[0003] For details about the first method, see Figure 1 and Figure 2 Two sensors are set on the first and highest floors of the elevator track, one for deceleration and the other for leveling. Three sensors are set on the middle floor, the upper and lower sensors are deceleration sensors, and the middle sensor is a leveling sensor. The car uses a magnetic strip. The problem with this control method is that because the magnetic strip has a certain length, it will cause the upward and downward leveling positions of the car to be inconsistent, and the car will not be level with the ground.

[0004] The second method is to install a bistable sensor in the car and magnetic beans on the elevator track, with two on the first floor and the highest floor, and three on the middle floor. The problem with this control method is that the magnetic beans are easily weakened with the use time or temperature changes, so that the bistable sensor cannot sense the magnetic beans, causing the elevator to stop at the wrong floor. The elevator hall door is usually controlled by the number of magnetic beans sensed, which can cause the hall door of the original floor to open, which can easily cause a fall accident.

[0005] The third method is the encoder solution. As the car moves, a steel wire is used to pull the encoder to rotate and record the number of pulses to determine the car position. This solution is cumbersome to install and debug. If the encoding data is wrong due to a crash or interference of the main control chip, the probability of stopping at the wrong floor will increase.

[0006] The fourth method is the digital ruler solution, which determines the position of the car by pulling the digital ruler through the car. This solution is similar to the encoder solution. It is cumbersome to install and debug, and there is also the risk of stopping at the wrong floor.

[0007] The above-mentioned existing leveling control schemes may bring about the safety risk of the car door opening by mistake, or cause the upward and downward leveling positions of the car to be inconsistent, or the risk of the car colliding with the ground due to unevenness. Utility Model Content

[0008] The purpose of the utility model is to provide a leveling and deceleration control device for lifting equipment, which can at least partially solve the technical problems mentioned in the above background technology.

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leveling and deceleration control device for lifting equipment, comprising: a positioning part connected to the lift car, the positioning part is vertically arranged along the height direction of the car; and also comprises a plurality of sensor groups connected to the fixed guide rail of the lifting equipment, the number of the sensor groups corresponds to the number of floors of the lifting equipment, the positions of the sensor groups and the positioning part correspond, the sensor groups include upper sensors and lower sensors distributed up and down, the spacing between the upper sensors and the lower sensors is equal to the length of the positioning part.

[0010] In a preferred embodiment, the length of the positioning portion is set between 15-20 cm. This solution is used to reserve a suitable deceleration distance to ensure smooth movement and stopping of the car.

[0011] In a preferred embodiment, the upper sensor and the lower sensor are both arranged horizontally, with their center lines parallel to each other and located in the same vertical plane. This solution is used to ensure that the two sensors can sense the upward or downward positioning part with high accuracy and consistency.

[0012] In a preferred embodiment, the sensor group may be a magnetic induction switch, a limit switch or a light switch.

[0013] In a preferred embodiment, the positioning part is a positioning magnetic strip. The positioning magnetic strip is compatible with many types of sensors, has strong versatility, and is easy to disassemble and replace due to its magnetic attraction.

[0014] In a preferred embodiment, when the sensor group adopts a magnetic induction switch, the horizontal distance between the magnetic induction switch and the positioning magnetic strip is set between 5mm and 10mm. This solution is used to ensure that the magnetic induction switch has an accurate induction effect on the positioning magnetic strip.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The leveling and deceleration control device for lifting equipment provided by the utility model can perform deceleration control and leveling control on the car and ensure the accuracy of the stopping position of the car at each floor during the upward or downward movement by installing two sensors on the fixed guide rails of each floor of the lifting equipment and cooperating with the positioning magnetic strips that move with the lifting of the car. In addition, only two sensors are installed on each floor, which is lower in cost than the existing three-sensor installation solution and is simple to install and debug.

[0017] 2. On the other hand, the hall door power system of the corresponding layer is controlled by the sensor group of the corresponding layer. The hall door of the corresponding layer can be opened only when the sensor group of the corresponding layer senses the positioning part of the car, thereby avoiding the safety hazard caused by the inconsistency between the number of open hall doors and the number of car floors. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the elevator car reaching the upward leveling and the downward leveling in the prior art;

[0019] Figure 2 It is a schematic diagram of the upward deceleration state and the downward deceleration state of the car in the prior art;

[0020] Figure 3 A schematic diagram of the elevator car reaching the upward leveling and the downward leveling in the lifting equipment leveling and deceleration control device provided by the embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the upward deceleration state and the downward deceleration state of the car in the lifting equipment leveling and deceleration control device provided by the embodiment of the utility model;

[0022] Figure 5 A schematic diagram of the cooperation between the car and each sensor group in the lifting equipment leveling and deceleration control device provided by the embodiment of the utility model;

[0023] Figure 6 This is a connection block diagram of the controller and various systems in the embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the limit switch in the embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the light-sensing switch in the embodiment of the utility model;

[0026] Fig. 9 It is a schematic diagram of the structure of the photosensitive switch and the positioning part in the embodiment of the utility model.

[0027] The meaning of each number in the figure is:

[0028] 1. Car; 2. Positioning unit; 3. Sensor group; 31. Upper sensor; 32. Lower sensor; 4. Fixed guide rail; 5. Limit switch; 51. Touch iron sheet; 6. Photosensitive switch. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] The present embodiment discloses a leveling and deceleration control device for lifting equipment. The lifting equipment described in the present embodiment includes a household lifting platform, an elevator, and other lifting equipment with fewer floors.

[0032] The following will refer to Figure 3-Figure 6 The lifting equipment leveling and deceleration control device provided in this embodiment is described in detail.

[0033] In this embodiment, the leveling and deceleration control device of the lifting equipment includes a positioning part 2 connected to the lifting equipment car 1, and a plurality of sensor groups 3 connected to the fixed guide rail 4 of the lifting equipment. The positions of the sensor groups 3 and the positioning part 2 correspond, and the sensor groups 3 can sense the position of the positioning part 2.

[0034] Specifically, the positioning part 2 is constructed as a plate-like structure with a predetermined length. Exemplarily, the positioning part 2 can adopt a positioning magnetic strip, a baffle or a contact iron and other structures, which are connected to the outer frame of the car 1. The connection method can be bonding, magnetic attraction or bolt connection, etc., which can be selected according to actual needs. Preferably, the positioning part 2 adopts a positioning magnetic strip, which is connected to the outer frame of the car 1 or the magnetic mounting plate on the outer frame of the car 1 by magnetic attraction. The positioning magnetic strip is compatible with many types of sensors and has strong versatility. The magnetic attraction method also facilitates its disassembly and replacement. Figure 3 As shown, the positioning portion 2 is vertically arranged along the height direction of the car 1 , and can be raised and lowered synchronously with the car 1 .

[0035] The number of sensor groups 3 corresponds to the number of floors of the lifting equipment, that is, each fixed rail 4 of the level lifting equipment is provided with a sensor group 3, and the sensor group 3 is fixedly connected to the fixed rail 4 through a sensor mounting bracket (not shown in the figure), and the sensor group 3 is arranged on the opposite side of the positioning part 2, so that the sensor group 3 can sense the positioning part 2 moving up and down with the car 1. Exemplarily, the sensor group 3 can adopt a magnetic induction switch, a limit switch 5, a light switch 6, etc. It can be understood by those skilled in the art that when the sensor group 3 adopts a magnetic induction switch, the positioning part 2 needs to adopt a positioning magnetic strip that can adapt to the magnetic induction switch, and the horizontal distance between the two is preferably set between 5mm-10mm; Figure 7-Figure 9 The figures show that the sensor group 3 adopts the limit switch 5 and the light switch 6 respectively. When the sensor group 3 adopts the limit switch 5, the positioning part 2 needs to be in contact with the touch iron sheet 51 of the limit switch 5. When the light switch 6 is adopted, the positioning part 2 needs to be able to block its light beam to ensure the sensing effect. The sensing principles belong to the prior art.

[0036] More specifically, the sensor group 3 includes an upper sensor 31 and a lower sensor 32 distributed up and down. The upper sensor 31 and the lower sensor 32 are both horizontally arranged, with their center lines parallel to each other and located in the same vertical plane to ensure high-precision and high-consistency sensing of the upward or downward positioning part 2.

[0037] In this embodiment, the upper sensor 31 is used for the downward deceleration control of the car 1. When the car 1 drives the positioning part 2 downward, when the upper sensor 31 senses the positioning part 2, the car 1 starts to decelerate downward; the lower sensor 32 is used for the upward deceleration control of the car 1. When the car 1 drives the positioning part 2 upward, when the lower sensor 32 senses the positioning part 2, the car 1 starts to decelerate upward.

[0038] At the same time, the upper sensor 31 and the lower sensor 32 are also used for the leveling control of the car 1 and the power system control of the hall door of the corresponding floor, respectively. Specifically: when the car 1 drives the positioning part 2 downward, when the upper sensor 31 senses the positioning part 2, the car 1 starts to decelerate downward, and the car 1 continues to descend until the lower sensor 32 senses the positioning part 2 and reaches the leveling position, the car 1 stops moving, and the hall door of the corresponding floor opens; when the car 1 drives the positioning part 2 upward, when the lower sensor 32 senses the positioning part 2, the car 1 starts to decelerate upward, and the car 1 continues to ascend until the upper sensor 31 senses the positioning part 2 and reaches the leveling position, the car 1 stops moving, and the hall door of the corresponding floor opens.

[0039] Usually, a lifting device with fewer floors is equipped with a hall door on each level instead of a car door. Compared with the solution in which the car door drives the hall door to open in high-rise elevators with more floors, this solution will increase the safety risk of the hall door opening by mistake when the car 1 does not come. In this embodiment, a sensor group 3 is arranged on each level, and the sensor group 3 of the corresponding layer controls the hall door power system of the corresponding layer. Only when the sensor group 3 of the corresponding layer senses the positioning part 2 of the car 1, can the hall door of the corresponding layer be opened, thereby avoiding the safety hazard caused by the inconsistency between the number of floors of the open hall door and the number of floors of the car 1.

[0040] It should be noted that, in each sensor group 3 of the present embodiment, the distance between the upper sensor 31 and the lower sensor 32 is equal to the length of the positioning portion 2. This arrangement can ensure the accuracy of the stop position of the positioning portion 2 of the car 1. Regardless of whether the positioning portion 2 goes up or down with the car 1, its stop position will be positioned between the upper sensor 31 and the lower sensor 32, thereby avoiding the problem of error in the stop position of the car 1 when going up or down in the prior art.

[0041] Furthermore, the length of the positioning portion 2 is set between 15-20 cm to reserve a suitable deceleration distance to ensure smooth movement and stopping of the car 1. If the distance is set too small, it will cause too rapid deceleration, and if the distance is set too large, it will cause too slow deceleration, both of which will bring poor user experience.

[0042] It is understandable that the lifting equipment leveling and deceleration control device provided in this embodiment also includes a controller, and the upper sensor 31, the lower sensor 32, the car power system for controlling the lifting of the car 1, and the hall door power system are all connected to the controller. The upper sensor 31 and the lower sensor 32 transmit the detection signal of the positioning part 2 to the controller, so that the controller can accurately control the car power system and the hall door power system according to each action process of the above scheme. The controller can adopt an existing PLC or MCU controller, and the matching method of the controller and the sensor belongs to the existing technology and will not be repeated here.

[0043] The lifting equipment leveling and deceleration control device provided in this embodiment can alternately level or decelerate the car 1 through the upper and lower sensors in the sensor group 3, and limit the length of the positioning part 2 and the distance between the upper and lower sensors 32, so as to ensure the accuracy of the stopping position of the car 1 at each floor during the upward or downward movement; and further control the hall door power system of the corresponding layer through the sensor group 3 of the corresponding layer, and the hall door of the corresponding layer can only be opened when the sensor group 3 of the corresponding layer senses the positioning part 2 of the car 1, thereby avoiding the safety hazard of mistaken opening of the hall door at the wrong floor due to missed detection, coding data error or encoder damage.

[0044] It can be understood that this embodiment is not only applicable to the operation control of lifting equipment with fewer floors, but also applicable to lifting equipment with multiple floors and high-rise buildings with sufficient budget.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A leveling and deceleration control device for lifting equipment, characterized in that: include: A positioning portion (2) connected to a lift car (1), wherein the positioning portion (2) is vertically arranged along the height direction of the car (1); A plurality of sensor groups (3) are connected to a fixed guide rail (4) of a lifting device, the number of the sensor groups (3) corresponds to the number of layers of the lifting device, the positions of the sensor groups (3) and the positioning part (2) correspond to each other, the sensor groups (3) include upper sensors (31) and lower sensors (32) distributed up and down, and the spacing between the upper sensors (31) and the lower sensors (32) is equal to the length of the positioning part (2).

2. The leveling and deceleration control device for lifting equipment according to claim 1, characterized in that: The length of the positioning portion (2) is set between 15-20 cm.

3. The leveling and deceleration control device for lifting equipment according to claim 1, characterized in that: The upper sensor (31) and the lower sensor (32) are both arranged horizontally, with their center lines being parallel to each other and located in the same vertical plane.

4. The lifting equipment leveling and deceleration control device according to claim 1, characterized in that: The sensor group (3) may be a magnetic induction switch, a limit switch (5) or a light sensor switch (6).

5. The leveling and deceleration control device for lifting equipment according to claim 4, characterized in that: The positioning portion (2) is a positioning magnetic strip.

6. The leveling and deceleration control device for lifting equipment according to claim 5, characterized in that: When the sensor group (3) adopts a magnetic induction switch, the horizontal distance between the magnetic induction switch and the positioning magnetic strip is set between 5 mm and 10 mm.

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