An elevator car

Abstract

The utility model relates to an elevator car, including the car floor of installation in car bottom support, elevator car still include at least one elevating gear, the elevating gear install between car floor and car bottom support, be used for adjusting the vertical distance between car floor and car bottom support, through the utility model discloses can guarantee the while improving the security of elevator return flat layer of elevator flat layer precision.

Description

Technical Field

[0001] This utility model relates to the field of elevator car technology, and in particular to an elevator car. Background Technology

[0002] With the development of intelligent elevators, elevators, as an important carrier of vertical transportation, are increasingly required to interact with intelligent equipment such as robots and AGVs. Because they need to support these unmanned intelligent robots, the elevator system has high requirements for leveling accuracy. If the height difference between the inside and outside of the car is too large, the robot will encounter obstacles and be unable to enter or exit the car smoothly. On the other hand, improving the accuracy of elevator leveling plays a positive role in preventing elderly, young, sick, and disabled people from tripping and falling when entering and exiting elevators. However, the leveling position of the elevator is affected by the load. Excessive load will cause the car to shift downwards and fall below the landing sill, while insufficient load will cause the car to shift upwards and rise above the landing sill, making it difficult to achieve precise leveling.

[0003] Currently, no effective solution has been proposed for ensuring elevator leveling accuracy to avoid passenger obstruction when entering or exiting the elevator. Utility Model Content

[0004] In view of this, it is necessary to provide an elevator car that can accurately level the floors.

[0005] This utility model provides an elevator car, including a car floor installed on a car base; the elevator car also includes at least one lifting device; the lifting device is installed between the car floor and the car base and is used to adjust the vertical distance between the car floor and the car base.

[0006] In one embodiment, at least one position sensor is also included, which is connected to the car floor to detect the height difference between the door area floor and the car floor.

[0007] In one embodiment, the car floor includes a car sill and a car floor, which are rigidly connected; the door area floor includes a hall door sill, and a position sensor is used to detect the height difference between the car sill and the hall door sill.

[0008] In one embodiment, a position sensor is provided at a first end and / or a second end of the car sill in the length direction, and the position sensor is fixed to the outside of the elevator car via the car sill.

[0009] In one embodiment, the position sensor is electrically connected to the elevator main control board.

[0010] In one embodiment, the position sensor includes a first position sensor and a second position sensor; the lifting device includes a first lifting device and a second lifting device; the first position sensor is electrically connected to the first lifting device, and the second position sensor is electrically connected to the second lifting device; the first position sensor and the first lifting device are installed at a first end of the car floor in the car door opening direction, and the second position sensor and the second lifting device are installed at a second end of the car floor in the car door opening direction.

[0011] In one embodiment, the first position sensor and the second position sensor are respectively installed on both sides of the car sill; the first lifting device and the second lifting device are respectively installed on both sides of the car floor; the lifting device is installed between the car floor and the car base.

[0012] In one embodiment, the first lifting device includes two first lifting mechanisms, the second lifting device includes two second lifting mechanisms, the two first lifting mechanisms are rigidly connected to each other, the two second lifting mechanisms are rigidly connected to each other, and the two first lifting mechanisms and the two second lifting mechanisms are respectively installed at the four corners of the car floor.

[0013] In one embodiment, the position sensor is at least one of the following: an optoelectronic absolute position sensor, an infrared sensor.

[0014] The elevator car floor and the elevator car wall are connected by a guide device.

[0015] The elevator car provided by this utility model includes a car floor installed on a car base support, and the elevator car also includes at least one lifting device; the lifting device is installed between the car floor and the car base support, and is used to adjust the vertical distance between the car floor and the car base support. Through this application, when the elevator car is leveled, the height of the car floor inside the car can be further adjusted by the lifting device, thereby accurately aligning the height of the floor inside and outside the car. This effectively avoids problems such as robot obstruction during entry and exit caused by inconsistent floor heights inside and outside the car, and prevents accidents such as tripping and falling, thus making elevator transportation smoother and effectively improving safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an elevator car structure according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the installation structure of the lifting device according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the electrical connections of an elevator car control system according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of an elevator car structure according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of an elevator car structure according to an embodiment of the present invention.

[0021] Reference numerals: 11, car floor; 12, elevator car; 13, position sensor; 14, lifting device; 21, first lifting mechanism; 22, second lifting mechanism; 23, car sill; 24, car floor; 25, second position sensor; 26, first position sensor; 31, foot guard; 32, upper surface of hall door sill; 33, upper surface of car sill. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that when a component is said to be "set on" another component, it can be directly set on the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or there may be an intervening component.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Electrical connections mentioned in this application include wired connections and wireless connections.

[0026] Please see Figure 1 The present invention provides an elevator car, including a car floor 11 installed on the car base support. The elevator car 12 also includes at least one lifting device 14. The lifting device 14 is installed between the car floor 11 and the car base support and is used to adjust the vertical distance between the car floor 11 and the car base support.

[0027] Specifically, the elevator car 12 is a single unit, and a car floor 11 is provided within the elevator car 12. The car floor 11 can move vertically within the elevator car 12 under the support of the lifting device 14. The lifting device 14 is installed between the bottom support of the elevator car 12 and the car floor 11. The lifting device 14 drives the car floor 11 to move vertically. In this embodiment, the number and installation position of the lifting devices 14 are not specifically limited. Any design that can achieve the above function should fall within the protection scope of this application. It is understood that the adjustment of the floor height inside and outside the car in this application is achieved by adjusting the height of the car floor 11 inside the car, rather than by adjusting the height of the entire elevator car 12. This compensates for the overall leveling deviation of the elevator car 12, thereby avoiding the situation where passengers entering and exiting the car are blocked by the height difference between the inside and outside of the car. The adjustment method of the lifting device 14 can be passive adjustment or autonomous adjustment. The specific structure of the lifting device 14 can be a conventional structure such as a motor-driven lifting mechanism, and there are no restrictions here.

[0028] Furthermore, it also includes at least one position sensor 13, which is mounted on the car floor 11 to detect the height difference between the door area floor and the car floor 11.

[0029] Specifically, position sensor 13 is used to detect the height difference between the upper surface of the elevator car floor 11 and the upper surface of the door area floor, thereby providing precise values ​​for the adjustment of the lifting device 14. Exemplarily, position sensor 13 is electrically connected to the lifting device 14. Position sensor 13 directly transmits the height difference detection result to the lifting device 14. The lifting device 14 adjusts the height of the car floor 11 relative to the car base according to the received height difference, thereby moving the car floor 11 vertically by the height difference to eliminate it. In other embodiments, the lifting device 14 can also be manually adjusted until the height difference detected by position sensor 13 is 0. This embodiment does not specifically limit the number or installation position of position sensors 13; any design that can achieve the above functions should fall within the protection scope of this application.

[0030] Furthermore, the position sensor 13 is fixed via the car floor 11, preferably installed on the side of the car floor 11, and according to... Figure 1 It is known that the position sensor 13 has a large coverage area in the vertical direction, which can ensure accurate measurement of the height difference between the upper surface of the car floor 11 and the upper surface of the hall door sill. In some preferred embodiments, the above-mentioned length threshold can be set to 150mm.

[0031] In one embodiment, the car floor 11 includes a car sill 23 and a car floor 24, which are rigidly connected; the door area floor includes a hall door sill, and a position sensor 13 is used to detect the height difference between the car sill 23 and the hall door sill; a lifting device 14 is installed between the car floor 24 and the car base.

[0032] Specifically, since the upper surface 33 of the car sill and the upper surface 32 of the landing sill are the highest points of the car's interior and exterior floors, respectively, the position sensor 13 is the most accurate sensor for detecting the height difference between these two points. The car sill 23 is rigidly connected to the car floor 24, allowing the lifting device 14 to adjust the height of the car floor 24 in sync with the position sensor 13's detection of the height difference between the car sill 23 and the landing sill, thus facilitating precise adjustment.

[0033] In one embodiment, a position sensor 13 is provided at a first end and / or a second end of the car sill 23 in the length direction. The position sensor 13 is fixed to the outside of the elevator car 12 via the car sill 23.

[0034] Specifically, in this embodiment, the position sensor 13 is fixed to one end of the car sill 23 along its length, that is, one end in the direction of the car door opening. By fixing the position sensor 13 to the outside of the elevator car 12 through the car sill 23, the position sensor 13 can be prevented from being interfered with by passengers when detecting the height difference between the inside and outside of the car sill, thereby obtaining a more accurate detection result.

[0035] The first and second ends along the length direction are the two endpoints on the left and right sides of the car sill 23, respectively. Accordingly, in this embodiment, one or two position sensors 13 can be provided. If there is one position sensor 13, it is located at the first or second end along the length direction of the car sill 23. If there are two position sensors 13, they are located at the first and second ends, respectively. Since the length of the car sill 23 is greater than the length of the elevator car 12, the position sensor 13 can be fixed to the outside of the elevator car 12 through the car sill 23, preventing the position sensor 13 from being interfered with by the external environment when performing detection.

[0036] In one embodiment, the position sensor 13 is electrically connected to the elevator main control board.

[0037] Specifically, the elevator car 12 integrates an elevator main control board. When the main control board detects that the elevator car 12 has stopped at the door zone, it sends the signal indicating that it has stopped at the door zone as a trigger signal to the position sensor 13. The position sensor 13 is triggered by the signal sent by the main control board and begins to detect the vertical height difference between the upper surface 33 of the car sill and the upper surface 32 of the hall door sill. This configuration allows the position sensor 13 to start detecting the height difference only after the car has come to a complete stop, resulting in more accurate detection results.

[0038] In one embodiment, the position sensor 13 includes a first position sensor 26 and a second position sensor 25; the lifting device 14 includes a first lifting device and a second lifting device; the first position sensor 26 is electrically connected to the first lifting device, and the second position sensor 25 is electrically connected to the second lifting device; the first position sensor 26 and the first lifting device are installed at the first end of the car floor 11 in the car door opening direction, and the second position sensor 25 and the second lifting device are installed at the second end of the car floor 11 in the car door opening direction.

[0039] Specifically, this embodiment includes two position sensors 13, namely a first position sensor 26 and a second position sensor 25. The lifting device 14 includes a first lifting device and a second lifting device. The first position sensor 26 is electrically connected to the driver of the first lifting device, and the second position sensor 25 is electrically connected to the driver of the second lifting device. This enables the detection result of the first position sensor 26 to be transmitted to the driver of the first lifting device to drive the first lifting device to adjust its height, and the detection result of the second position sensor 25 to be transmitted to the driver of the second lifting device to drive the second lifting device to adjust its height. The installation positions of the two lifting devices are not limited in this embodiment. Two lifting devices are distributed on both sides of the elevator car floor. The first lifting device is installed at the first end of the car floor in the direction of the car door opening, meaning it can be located on the left or right side of the car floor 11 in this direction. Similarly, the second lifting device is installed at the second end of the car floor 11 in the direction of the car door opening, meaning it can be located on the right or left side. Likewise, the first position sensor 26 is located at the first end of the car floor 11 in the direction of the car door opening, and the second position sensor 25 is located at the second end of the car floor 11 in this direction. The first and second ends are either the left or right side ends, and they are two different ends on the car floor 11. It is understood that the installation of the two lifting devices should ensure that the car floor 11 remains balanced during lifting.

[0040] As can be seen from the above structure, the first lifting device and the second lifting device are independent of each other, as are the first position sensor and the second position sensor. Each lifting device can adjust its height based on its corresponding position sensor. In summary, by establishing a one-to-one correspondence and electrical connection between the position sensor 13 and the lifting device 14, and transmitting the detection results of the position sensor 13 in real time, left-right balance can be maintained when adjusting the height of the car floor 24, thus improving the height adjustment effect of the elevator car 12 car floor 24. Furthermore, each device is responsible for detecting and adjusting the height of one side of the car floor 24, resulting in higher adjustment accuracy.

[0041] In one embodiment, the first position sensor 26 and the second position sensor 25 are respectively installed on both sides of the car sill 23; the first lifting device and the second lifting device are respectively installed on both sides of the car floor 24; and the lifting device 14 is installed between the car floor 24 and the car base.

[0042] Specifically, the first position sensor 26 and the second position sensor 25 are preferably installed at both ends of the car sill 23, i.e., the first end and the second end in the car door opening direction, respectively. The first lifting device and the second lifting device are respectively installed on both sides of the car floor 24, i.e., the first end and the second end in the car door opening direction, and the lifting device 14 is installed between the car floor 24 and the car base. In this application, the car sill and the car floor are rigidly connected. Since the car sill 23 is closer to the door area, the position sensor 13 is set at both ends of the car sill 23, which can more accurately detect the height difference between the door area ground and the car floor 11. Since the area of ​​the car floor 24 is much larger than that of the car sill 23, the lifting device 14 is installed on both sides of the car floor 24, which can better fix the lifting device 14 to the bottom of the car floor 11. Furthermore, based on the adjustment of the car floor 24 by the lifting device 14, the entire car floor 11 can be moved.

[0043] In one embodiment, the first lifting device includes two first lifting mechanisms 21, and the second lifting device includes two second lifting mechanisms 22. The two first lifting mechanisms 21 are rigidly connected to each other, and the two second lifting mechanisms 22 are rigidly connected to each other. The two first lifting mechanisms 21 and the two second lifting mechanisms 22 are respectively installed at the four corners of the car floor 24.

[0044] Specifically, the first lifting device includes two first lifting mechanisms 21, and the second lifting device includes two second lifting mechanisms 22. The two first lifting mechanisms 21 and the two second lifting mechanisms 22 are rigidly connected. This embodiment provides four lifting mechanisms, each fixed to the car floor support and preferably distributed at the four corners of the car. These four lifting mechanisms vertically support the car floor 24 and the car sill 23. The four lifting mechanisms in this embodiment make the adjustment of the height of the car floor 24 and the car sill 23 more stable and safer. Furthermore, the rigid connection between the two first lifting mechanisms 21 and the two second lifting mechanisms 22 in this embodiment allows the two first lifting mechanisms 21 on the same side to move synchronously according to the detection signal of the first position sensor 26, and the two second lifting mechanisms 22 on the other side to move synchronously according to the detection signal of the second position sensor 25, resulting in higher adjustment efficiency and accuracy. Specifically, the two first lifting mechanisms 21 can be controlled by the first driver, and the two second lifting mechanisms 22 are controlled by the second driver. The first driver is electrically connected to the first position sensor 26, and the second driver is electrically connected to the second position sensor 25, thereby realizing the driving of the two sets of lifting mechanisms.

[0045] Figure 2 The diagram illustrates the installation structure of a lifting device in one embodiment. The first lifting device includes two first lifting mechanisms 21, and the second lifting device includes two second lifting mechanisms 22. The two first lifting mechanisms 21 and the two second lifting mechanisms 22 are rigidly connected. To ensure the stability of the car floor 24 during the movement of the lifting device, the four lifting mechanisms are preferably arranged at the four corners of the elevator car base, as shown in the diagram. The diagram also includes a first position sensor 26, a second position sensor 25, a car sill 23, and the car floor 24.

[0046] In one embodiment, the first lifting device may include at least three first sub-lifting devices, all of which are arranged in a row and are preferably installed on the left side of the elevator base. Similarly, the second lifting device may include at least three second sub-lifting devices, all of which are arranged in a row and are preferably installed on the right side of the elevator base.

[0047] In one embodiment, the position sensor is at least one of the following: an optoelectronic absolute position sensor, an infrared sensor.

[0048] In one embodiment, the car floor 11 and the elevator car 12 are connected by a guide device.

[0049] Specifically, the car floor 11 and the elevator car 12 are connected by a guide device to ensure that the car floor 11 does not rub against the car wall during the lifting and lowering process. In some preferred embodiments, the guide device is set as a guide rail-guide shoe system. The guide rail can be fixed to the elevator car wall to provide a vertical track for the car floor 11. The guide shoe can be installed at the bottom of the car floor 11, and the shoe head floats by a spring or rubber pad, closely adhering to the surface of the guide rail. This maintains the position of the car floor 11 and absorbs horizontal vibrations. In summary, the cooperation of the guide shoe and the guide rail strictly restricts the movement of the car floor 11 to the vertical direction, prevents horizontal swaying, and avoids friction between the car floor 11 and the car wall during the lifting and lowering process.

[0050] In one embodiment, the elevator car is a car for vertical transportation.

[0051] This application also provides a control method for an elevator car, which is applied to the elevator car structure described above. Specifically, the elevator main control board is electrically connected to two position sensors 13. The main control board sends the elevator's signal at the door zone as a "trigger signal" to the position sensors 13. A first position sensor 26 is electrically connected to the driver of a first lifting device, and a second position sensor 25 is electrically connected to the driver of a second lifting device. After receiving the "trigger signal," the first and second position sensors 26 and 25 respectively send the detected position information to their corresponding drivers for lifting adjustment and calibration. Figure 3 This is a schematic diagram of the electrical connections of the elevator car control system described above in one embodiment. The specific methods by which the lifting device 14 adjusts its height include:

[0052] Step S1: When the elevator car 12 is detected to have moved from a non-leveling area to a leveling area and is completely stopped within the door zone, the control position sensor 13 starts to detect.

[0053] In step S2, the first position sensor 26 and the second position sensor 25 respectively detect the height difference between the car sill 23 and the hall door sill, which are L1 and L2 respectively.

[0054] In step S3, the first position sensor 26 sends the L1 value to the driver of the first lifting device in real time, and the second position sensor 25 sends the L2 value to the driver of the second lifting device in real time.

[0055] In step S4, the first lifting mechanism 22 and the second lifting mechanism 23 adjust the lifting / lowering based on the values ​​of L1 and L2 mentioned above.

[0056] Step S5: After detecting that the height difference between the car sill 23 and the hall sill is 0 due to the adjustment of the lifting device 14, the respective positions are locked and maintained until the elevator enters the door area again and stops at a stationary position, and then the next height adjustment begins.

[0057] The following are examples illustrating two types of height adjustment:

[0058] like Figure 4 As shown in the figure, the upper surface 33 of the car sill, the upper surface 32 of the hall sill, the foot guard 31, and the car floor 11 (which includes the car floor 24 and the car sill 23) are also included. The foot guard 31 is typically installed below the car sill 23, extending to the hall sill area. It is usually made of high-strength metal to prevent passengers' feet from being pinched by the elevator shaft and the elevator car. When the upper surface 33 of the car sill is detected to be lower than the upper surface 32 of the hall sill, the elevator car 12 stops within the landing door area and remains stationary. The first position sensor 26 and the second position sensor 25 can respectively detect the distances L1 and L2 between the upper surfaces 33 of the car sill and the upper surface of the hall sill on the left and right sides of the elevator car 12, and set the upper surface 33 of the car sill as the reference zero point of the position sensor 13. Figure 4 As shown, when the hall door sill and the footboard 31 are above the reference zero point, the values ​​of L1 and L2 output by the two position sensors 13 are positive (i.e., L1>0, L2>0). At this time, the two first lifting mechanisms 21 in the first lifting device adjust the corresponding height upwards synchronously according to the value of L1. Similarly, the two second lifting mechanisms 22 in the second lifting device adjust the corresponding height upwards synchronously according to the value of L2, thereby ensuring that the upper surface of the elevator car 12 sill is at the same height as the upper surface of the hall door sill 32, i.e., L1=0, L2=0, and the height adjustment is completed.

[0059] When the upper surface 33 of the car sill is detected to be higher than the upper surface 32 of the hall door sill, such as Figure 5 As shown, the elevator car 12 is stopped and stationary within the landing door area, meaning the landing sill and foot guard 31 are below the reference zero point. At this time, the values ​​of L1 and L2 output by the first position sensor 26 and the second position sensor 25 are both negative (i.e., L1<0, L2<0). At this time, the two first lifting mechanisms 21 in the first lifting device adjust the corresponding height downwards synchronously according to the value of L1. Similarly, the two second lifting mechanisms 22 in the second lifting device adjust the corresponding height downwards synchronously according to the value of L2, ensuring that the upper surface 33 of the elevator car sill is at the same height as the upper surface 32 of the landing sill, i.e., L1=0, L2=0. At this time, the height adjustment is completed.

[0060] The technical features of the above-described embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any appropriate changes and variations made to the above embodiments within the scope of the essential spirit of the present utility model shall fall within the scope of protection claimed by the present utility model.

Claims

1. An elevator car, comprising a car floor installed on a car base; characterized in that, The elevator car also includes at least one lifting device; the lifting device is installed between the car floor and the car base, and is used to adjust the vertical distance between the car floor and the car base.

2. The elevator car according to claim 1, characterized in that, It also includes at least one position sensor connected to the car floor for detecting the height difference between the door area floor and the car floor.

3. The elevator car according to claim 2, characterized in that, The car floor includes a car sill and a car floor, which are rigidly connected; the door area floor includes a hall door sill, and the position sensor is used to detect the height difference between the car sill and the hall door sill.

4. The elevator car according to claim 3, characterized in that, The position sensor is provided at a first end and / or a second end of the car sill in the length direction, and the position sensor is fixed to the outside of the elevator car via the car sill.

5. The elevator car according to claim 2, characterized in that, The position sensor is electrically connected to the elevator main control board.

6. The elevator car according to claim 3, characterized in that, The position sensor includes a first position sensor and a second position sensor; the lifting device includes a first lifting device and a second lifting device; the first position sensor is electrically connected to the first lifting device, and the second position sensor is electrically connected to the second lifting device; the first position sensor and the first lifting device are installed at a first end of the car floor in the direction of the car door opening, and the second position sensor and the second lifting device are installed at a second end of the car floor in the direction of the car door opening.

7. The elevator car according to claim 6, characterized in that, The first position sensor and the second position sensor are respectively installed on both sides of the car sill; the first lifting device and the second lifting device are respectively installed on both sides of the car floor; the lifting device is installed between the car floor and the car base.

8. The elevator car according to claim 7, characterized in that, The first lifting device includes two first lifting mechanisms, and the second lifting device includes two second lifting mechanisms. The two first lifting mechanisms are rigidly connected to each other, and the two second lifting mechanisms are rigidly connected to each other. The two first lifting mechanisms and the two second lifting mechanisms are respectively installed at the four corners of the car floor.

9. The elevator car according to claim 2, characterized in that, The position sensor is at least one of the following: photoelectric absolute position sensor, infrared sensor.

10. The elevator car according to claim 1, characterized in that, The elevator car floor and the elevator car wall are connected by a guide device.

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