Hoisting equipment for mounting elevator car

Abstract

The invention belongs to the technical field of hoisting equipment, and particularly relates to hoisting equipment for mounting an elevator car, which comprises a slide rail, a pair of telescopic legs mounted below the slide rail, an electric pulley block slidably connected to the slide rail, an electric hoist mounted at the bottom of the electric pulley block, and an angle acquisition module and a vibration acquisition module arranged on the electric hoist. The angle collecting module is located below the electric hoist, the vibration collecting module is arranged on an iron chain of the electric hoist, and an executing mechanism is arranged on the electric pulley block. In the invention, the control module receives the data acquired by the angle acquisition module and the vibration acquisition module, generates the evaluation coefficient, compares the evaluation coefficient with the preset reference threshold value, and controls the working state of the execution mechanism according to the comparison result, so that the process can effectively reduce the deflection amplitude of the iron chain and obviously improve the stability of elevator parts in the hoisting process; and the safety risk is reduced, and the safety and reliability of elevator installation operation are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting equipment, and in particular to a hoisting equipment used for installing an elevator car. Background Art

[0002] The installation of the elevator car is usually carried out on the ground floor of the building. Generally, the main parts of the elevator, such as the base, car top, side panels and counterweight, need to be sent into the elevator shaft separately in batches, and then assembled inside the elevator shaft. During the installation of the elevator car, the performance of the lifting equipment is crucial.

[0003] Traditional elevator car hoisting equipment has some problems in actual operation. When lifting elevator parts, it is difficult to accurately monitor and control the status of cables (such as chains) connecting parts in real time. The yaw and vibration of the cables can easily cause the elevator parts to shake during the hoisting process, which not only affects the installation efficiency, but also poses a great safety hazard, which may cause parts to collide and be damaged or even fall. A more advanced, intelligent and stable hoisting equipment is urgently needed to solve this problem. Summary of the invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a hoisting device for installing an elevator car.

[0005] The present invention proposes a hoisting device for installing an elevator car, comprising a slide rail, a pair of telescopic legs installed below the slide rail, an electric pulley block slidably connected to the slide rail, an electric hoist installed at the bottom of the electric pulley block, an angle collection module and a vibration collection module are arranged on the electric hoist, the angle collection module is located below the electric hoist, the vibration collection module is arranged on the iron chain of the electric hoist and is located near the hook, the electric pulley block is provided with an actuator, the angle collection module is used to collect the deflection angle of the iron chain with the vertical direction in real time, and the vibration collection module is used to collect the vibration frequency and amplitude of the iron chain in real time; firstly, the electric hoist is moved to a position close to the elevator door by the electric pulley block, and then the elevator components to be lifted are moved to the electric hoist by the electric pulley block. It is hung on the hook, and then the iron chain is rolled up by the electric hoist, so that the elevator components are lifted by the hook until the elevator components can be suspended in the air, and then the electric hoist is driven by the electric pulley block to move into the elevator shaft, and then the lifting action is continued. In this process, the control module is used to receive the data collected by the angle acquisition module and the vibration acquisition module in real time, and conduct a comprehensive analysis, and then generate an evaluation coefficient, and compare the evaluation coefficient with the pre-set evaluation coefficient reference threshold to determine whether the swing amplitude of the iron chain is within a reasonable range, and control the working state of the actuator according to the comparison result. If the swing amplitude of the iron chain is not within a reasonable range, the actuator will start, thereby reducing the swing amplitude of the iron chain.

[0006] Preferably, the angle acquisition module is fixed at the bottom of the electric hoist and is adjacent to the iron chain on the electric hoist, a sleeve is fixed on the iron chain, the vibration acquisition module is fixed on the top of the sleeve, and the control module is fixed on the top of the slide rail; in this way, the angle acquisition module can better collect the swing angle of the iron chain and the vertical direction in real time, and the vibration acquisition module can better collect the vibration frequency of the iron chain in real time.

[0007] Preferably, the actuator includes a slide, a fixed plate is fixed on the top of the slide, the fixed plate is fixed on the back of the electric pulley block, a hydraulic damper is fixed on the inner wall of one side of the slide, the output shaft of the hydraulic damper is fixedly connected to a slide rod slidably connected to the slide, a ring is fixed to the front end of the slide rod, and the ring is sleeved on the electric hoist; when the actuator receives the corresponding instruction from the control module, the hydraulic damper will start working, and drive the slide rod to move in the direction away from the deflection of the chain through its output shaft, and then the pull rope can be pulled through the ring to achieve the effect of reverse braking, thereby limiting the deflection amplitude of the chain.

[0008] Preferably, the telescopic leg includes an extension rod and a leg frame, the extension rod is inserted into the top of the leg frame, and the slide rail is fixed to the top of the two extension rods at the same time. The extension rod and the leg frame are respectively provided with a plurality of sockets evenly distributed up and down, and the extension rod and the leg frame are fixed by pins inserted into the sockets; first, the two extension rods are moved along the length direction of the leg frame, and after moving to the appropriate position, the pins are inserted into a group of sockets on the extension rod and the leg frame at the same time, so that the extension rod and the leg frame can be fixed, thereby facilitating the adjustment of the equipment to different heights for operation.

[0009] Preferably, a control button is fixed to the front end surface of one of the leg frames; thus, the working states of the electric pulley block and the electric hoist can be conveniently controlled by the buttons on the control button.

[0010] Preferably, universal wheels are fixed to both ends of the bottom of the leg frame respectively; thus, the equipment can be supported on the ground by the universal wheels, thereby facilitating the transfer of the equipment.

[0011] Preferably, support columns are respectively provided at both ends of the leg frame, the support columns are threadedly connected to the leg frame, a base is fixed to the bottom end of the support column, and a handle is fixed to the top end of the support column; during the hoisting process, the support column only needs to be rotated by the handle so that the base contacts the ground for support, thereby avoiding instability of the equipment during the hoisting process.

[0012] Preferably, the calculation formula of the evaluation coefficient is: in, : The angle weight coefficient is calibrated through experiments, : Vibration energy weight coefficient, : System natural frequency (related to the length L of the iron chain and the load mass m): , is the stiffness of the chain), is the vibration frequency, is the amplitude, is the deflection angle.

[0013] Preferably, the control logic of the control module for the working state of the actuator according to the comparison result is as follows: When K (threshold 1.2), the hydraulic damper is activated and the damping force is output , damping force The calculation formula is: in, is the proportional gain coefficient, is the differential gain coefficient, is the time derivative of the dynamic stability coefficient; when When , maintain the current damping coefficient; When K<0.8, active control is turned off and the energy-saving mode is entered.

[0014] Compared with the prior art, the present invention provides a hoisting device for installing an elevator car, which has the following beneficial effects: 1. A hoisting device for installing an elevator car. The present invention uses an angle acquisition module to collect the swing angle of the iron chain in the vertical direction in real time, and a vibration acquisition module to collect the vibration frequency of the iron chain in real time. The control module generates an evaluation coefficient based on these data and compares it with a preset threshold to accurately determine whether the swing amplitude of the iron chain is reasonable, and then intelligently control the working state of the actuator. This process can effectively reduce the swing amplitude of the iron chain, significantly improve the stability of the elevator components during the hoisting process, reduce safety risks, and greatly improve the safety and reliability of elevator installation operations.

[0015] 2. A hoisting device for elevator car installation, the control module intelligently controls the hydraulic damper of the actuator according to the comparison result of the evaluation coefficient and the threshold. When the chain deflection amplitude is within a reasonable range, the current damping coefficient is maintained or the active control is turned off to enter the energy-saving mode, avoiding unnecessary energy consumption; when the deflection amplitude exceeds the reasonable range, the hydraulic damper is activated in time to output the damping force to ensure the stable operation of the equipment. This intelligent control strategy achieves a good balance between energy saving and efficient operation while ensuring the safe and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a hoisting device for installing an elevator car proposed by the present invention; Figure 2 This is a schematic diagram of the overall structure of a hoisting device for installing an elevator car proposed by the present invention; Figure 3 A schematic diagram of the structure of an electric hoist of a hoisting device for installing an elevator car proposed by the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A; Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B; Figure 6 A schematic diagram of the structure of an actuator of a hoisting device for installing an elevator car proposed by the present invention; Figure 7 A schematic diagram of the telescopic leg structure of a hoisting device for installing an elevator car proposed by the present invention; Figure 8 For the present invention Figure 2 Enlarged structural diagram at C.

[0017] In the figure: 1. slide rail; 2. electric pulley block; 3. electric hoist; 4. angle acquisition module; 5. iron chain; 6. sleeve; 7. vibration acquisition module; 8. control module; 9. fixed plate; 10. slide; 11. hydraulic damper; 12. slide rod; 13. sleeve; 14. extension rod; 15. leg rack; 16. latch; 17. control button; 18. socket; 19. universal wheel; 20. support column; 21. base; 22. handle. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] Reference Figure 1-Figure 8, a hoisting device for installing an elevator car, comprising a slide rail 1, a pair of telescopic legs are installed below the slide rail 1, an electric pulley block 2 is slidably connected to the slide rail 1, an electric hoist 3 is installed at the bottom of the electric pulley block 2, an angle acquisition module 4 and a vibration acquisition module 7 are arranged on the electric hoist 3, the angle acquisition module 4 is located below the electric hoist 3, the vibration acquisition module 7 is arranged on the iron chain 5 of the electric hoist 3 and is located near the hook, an actuator is arranged on the electric pulley block 2, the angle acquisition module 4 is used to collect the deflection angle of the iron chain 5 with the vertical direction in real time, and the vibration acquisition module 7 is used to collect the vibration frequency and amplitude of the iron chain 5 in real time; The control module 8 receives the data collected by the angle collection module 4 and the vibration collection module 7 and generates an evaluation coefficient, compares it with a preset reference threshold, and controls the working state of the actuator according to the comparison result; It should be noted that the angle acquisition module 4 can be a MEMS gyroscope or a laser goniometer or other devices capable of real-time acquisition of the yaw angle of the iron chain 5 and the vertical direction, the vibration acquisition module 7 can be a three-axis acceleration sensor or other devices capable of real-time acquisition of the vibration frequency and amplitude of the iron chain 5, and the control module 8 is an embedded controller with an integrated data fusion algorithm. Therefore, the angle acquisition module 4, the vibration acquisition module 7 and the control module 8 are not specifically limited here and can be selected according to actual needs; During operation, the electric hoist 3 is first moved to a position close to the elevator door through the electric pulley block 2, and then the elevator component to be lifted is hung on the hook, and then the iron chain 5 is rolled up by the electric hoist 3, so that the elevator component is lifted through the hook until the elevator component can be suspended in the air, and then the electric hoist 3 is driven by the electric pulley block 2 to move inside the elevator shaft, and then the lifting action is continued. In this process, the control module 8 is used to receive the data collected by the angle acquisition module 4 and the vibration acquisition module 7 in real time, and perform a comprehensive analysis, and then generate an evaluation coefficient, and compare the evaluation coefficient with a preset evaluation coefficient reference threshold to determine whether the swing amplitude of the iron chain 5 is within a reasonable range, and control the working state of the actuator according to the comparison result. If the swing amplitude of the iron chain 5 is not within a reasonable range, the actuator will start, thereby reducing the swing amplitude of the iron chain 5.

[0021] Among them, the angle acquisition module 4 is fixed at the bottom of the electric hoist 3 and is adjacent to the iron chain 5 on the electric hoist 3, a sleeve frame 6 is fixedly sleeved on the iron chain 5, the vibration acquisition module 7 is fixed on the top of the sleeve frame 6, and the control module 8 is fixed on the top of the slide rail 1; During operation, the angle collection module 4 can better collect the swing angle of the iron chain 5 in the vertical direction in real time, and the vibration collection module 7 can better collect the vibration frequency of the iron chain 5 in real time.

[0022] The actuator includes a slide 10, a fixing plate 9 is fixed on the top of the slide 10, the fixing plate 9 is fixed on the back of the electric pulley block 2, a hydraulic damper 11 is fixed on the inner wall of one side of the slide 10, the output shaft of the hydraulic damper 11 is fixedly connected to a slide rod 12 slidably connected to the slide 10, a collar 13 is fixed on the front end of the slide rod 12, and the collar 13 is sleeved on the electric hoist 3; During operation, when the actuator receives the corresponding instruction from the control module 8, the hydraulic damper 11 will start working, and drive the slide rod 12 to move away from the swing of the chain 5 through its output shaft, and then the pull rope can be pulled through the ring 13 to achieve the effect of reverse braking, thereby limiting the swing amplitude of the chain 5.

[0023] The telescopic leg includes an extension rod 14 and a leg frame 15. The extension rod 14 is inserted at the top of the leg frame 15. The slide rail 1 is fixed to the top of the two extension rods 14 at the same time. The extension rod 14 and the leg frame 15 are respectively provided with a plurality of sockets 18 evenly distributed up and down. The extension rod 14 and the leg frame 15 are fixed by a pin 16 inserted into the socket 18. When working, first move the two extension rods 14 along the length direction of the leg frame 15. After moving to the appropriate position, insert the pins 16 into a group of sockets 18 on the extension rods 14 and the leg frame 15 at the same time, so that the extension rods 14 and the leg frame 15 can be fixed, thereby facilitating the adjustment of the equipment to different heights for operation.

[0024] Among them, a control button 17 is fixed to the front end surface of one of the leg frames 15; During operation, the working states of the electric pulley block 2 and the electric hoist 3 can be conveniently controlled by the buttons on the control button 17.

[0025] Among them, universal wheels 19 are fixed at both ends of the bottom of the leg frame 15; During operation, the universal wheels 19 can be used to support the device on the ground, thereby facilitating the transfer of the device.

[0026] Furthermore, support columns 20 are respectively provided at both ends of the leg frame 15, and the support columns 20 are threadedly connected to the leg frame 15. A base 21 is fixed to the bottom end of the support column 20, and a handle 22 is fixed to the top end of the support column 20. During operation, during the hoisting process, the support column 20 only needs to be rotated by the handle 22 so that the base 21 contacts the ground for support, thereby avoiding instability of the device during the hoisting process.

[0027] In another embodiment, through the cooperation between the angle acquisition module 4, the vibration acquisition module 7, the control module 8 and the actuator, the control logic of the intelligent control of the swing amplitude of the iron chain 5 is as follows: 1. Evaluation coefficient calculation Define the dynamic stability coefficient K: in, : Angle weight coefficient (calibrated by experiment), : Vibration energy weight coefficient, : System natural frequency (related to the length L of the iron chain 5 and the load mass m): , is the stiffness of the iron chain 5), is the vibration frequency, is the amplitude, is the deflection angle.

[0028] 2. Control Decisions When K (Threshold 1.2): Activate the hydraulic damper and output the damping force , The calculation formula is: in, is the proportional gain coefficient, is the differential gain coefficient, is the time derivative of the dynamic stability coefficient; when Maintain the current damping coefficient. When K<0.8: turn off active control and enter energy-saving mode.

[0029] 3. Parameter self-correction Create a parameter optimization function: The gradient descent method is used to update the weight coefficients online.

[0030] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0031] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0032] In the several embodiments provided in the present application, it should be understood that the disclosed overall system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another overall system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0033] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0034] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0035] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A hoisting device for installing an elevator car, comprising a slide rail (1), characterized in that: A pair of telescopic legs are installed below the slide rail (1), an electric pulley block (2) is slidably connected to the slide rail (1), an electric hoist (3) is installed at the bottom of the electric pulley block (2), an angle acquisition module (4) and a vibration acquisition module (7) are arranged on the electric hoist (3), the angle acquisition module (4) is located below the electric hoist (3), the vibration acquisition module (7) is arranged on the iron chain (5) of the electric hoist (3) and is located near the hook, an actuator is arranged on the electric pulley block (2), the angle acquisition module (4) is used to collect the deflection angle of the iron chain (5) in the vertical direction in real time, and the vibration acquisition module (7) is used to collect the vibration frequency and amplitude of the iron chain (5) in real time; The control module (8) receives the data collected by the angle collection module (4) and the vibration collection module (7) and generates an evaluation coefficient, compares it with a preset reference threshold value, and controls the working state of the actuator according to the comparison result.

2. A hoisting device for installing an elevator car according to claim 1, characterized in that: The angle acquisition module (4) is fixed to the bottom of the electric hoist (3) and is adjacent to the iron chain (5) on the electric hoist (3); a sleeve frame (6) is fixedly sleeved on the iron chain (5); the vibration acquisition module (7) is fixed to the top of the sleeve frame (6); and the control module (8) is fixed to the top of the slide rail (1).

3. The hoisting device for installing an elevator car according to claim 1, characterized in that: The actuator comprises a slide (10), a fixing plate (9) is fixed on the top of the slide (10), the fixing plate (9) is fixed on the back of the electric pulley block (2), a hydraulic damper (11) is fixed on the inner wall of one side of the slide (10), an output shaft of the hydraulic damper (11) is fixedly connected to a slide rod (12) slidably connected to the slide (10), a collar (13) is fixed on the front end of the slide rod (12), and the collar (13) is sleeved on the electric hoist (3).

4. The hoisting device for installing an elevator car according to claim 1, characterized in that: The telescopic leg comprises an extension rod (14) and a leg frame (15), the extension rod (14) being inserted into the top end of the leg frame (15), the slide rail (1) being fixed to the top ends of the two extension rods (14) at the same time, the extension rod (14) and the leg frame (15) being respectively provided with a plurality of insertion holes (18) evenly distributed up and down, the extension rod (14) and the leg frame (15) being fixed by means of a latch (16) inserted into the insertion hole (18).

5. A hoisting device for installing an elevator car according to claim 4, characterized in that: A control button (17) is fixed to the front end surface of one of the leg frames (15).

6. A hoisting device for installing an elevator car according to claim 4, characterized in that: Universal wheels (19) are respectively fixed to both ends of the bottom of the leg frame (15).

7. A hoisting device for installing an elevator car according to claim 6, characterized in that: Support columns (20) are respectively provided at both ends of the leg frame (15), the support column (20) and the leg frame (15) are threadedly connected, a base (21) is fixed at the bottom end of the support column (20), and a handle (22) is fixed at the top end of the support column (20).

8. The hoisting device for installing an elevator car according to claim 1, characterized in that: The calculation formula of the evaluation coefficient is: in, is the angle weight coefficient, is the vibration energy weight coefficient, is the natural frequency of the system, is the vibration frequency, is the amplitude, is the deflection angle.

9. The hoisting device for installing an elevator car according to claim 8, characterized in that: The control logic of the control module (8) for the working state of the actuator according to the comparison result is as follows: When K When the hydraulic damper is activated, the damping force is output ; when When , maintain the current damping coefficient; When K<0.8, active control is turned off and the energy-saving mode is entered.

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