A device for elevator anti-deformation impact compression test

Abstract

The present invention relates to the technical field of elevator testing equipment, and specifically discloses a device for elevator anti-deformation impact compression testing, including an elevator test derrick, an elevator car test piece is movably arranged in the inner cavity of the elevator test derrick, and a vibration simulation structure is arranged in the inner cavity bottom area of ​​the elevator test derrick. The present invention arranges an elevator car and a speed-controllable PLC electric winch in the elevator test derrick composed of a frame structure, so as to simulate the state of the elevator moving upward and falling at high speed, and a load adjustment structure is arranged inside the car to adjust the load weight of the elevator car, so as to simulate the collision of elevator cars under different weights at the same speed, and a vibration piece is arranged at the bottom of the elevator test derrick to simulate the collision of the elevator in an earthquake situation, and a derrick moving base that can stably support and facilitate the movement of the equipment is also arranged at the bottom of the elevator test derrick, so as to facilitate the free movement and fixation of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of elevator testing equipment, and in particular to a device used for an elevator anti-deformation impact compression test. Background Art

[0002] An elevator is a device that serves several specific floors in a building. Its car runs on at least two rigid tracks that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. For passengers, the safety performance of the elevator is directly related to the safety of their lives. Therefore, the elevator's ability to resist deformation, impact and compression is very important. In recent years, with the advancement of technology, elevator manufacturers and R&D personnel have been committed to improving the safety performance of elevators through technological innovation. For example, ESAB Intelligent Elevator Co., Ltd. on the market has innovated a number of technologies, including elevator anti-fall counterweight devices, elevator full-digital simulation test systems, and elevator anti-deformation, impact and compression test devices. The research and development and application of these technologies are aimed at ensuring the elevator's resistance to external impacts and reducing the possibility of passenger injuries. Therefore, in the design and production process of elevators, in order to prevent and reduce the occurrence of elevator accidents and protect the safety of passengers, experiments on anti-deformation, impact and compression are usually carried out.

[0003] After searching, a Chinese patent with publication number CN117871008A discloses an elevator anti-deformation impact compression test device, and its technical solution mainly includes: comprising a test bench, a support platform is provided on the top of the test bench, a compression platform is provided on the outside of the support platform, a first clamping plate and a second clamping plate are respectively provided on the top of the compression platform, the first clamping plate and the second clamping plate are in a corresponding form to each other, the left side of the outer wall of the first clamping plate is connected to the second transverse support rod, the right side of the outer wall of the second clamping plate is connected to the second transverse telescopic rod, the second transverse telescopic rod is located on the left side of the second transverse support rod, the outside of the second transverse support rod is connected to an internal threaded ring, the inside of the internal threaded ring is connected to a threaded rod, the outside of the threaded rod is connected to a handle, and the threaded rod is clamped on the outside of the second transverse telescopic rod.

[0004] In the above-mentioned existing patent technology, a first clamping plate and a second clamping plate are respectively arranged on the top of the compression platform, a second transverse support rod is arranged on the outside of the first clamping plate, and a second transverse telescopic rod is arranged on the outside of the second clamping plate. The first clamping plate and the second clamping plate can be telescopically adjusted according to the size of the elevator to be compressed, so that the first clamping plate and the second clamping plate can be completely clamped on the outer wall of the elevator, thereby fixing the elevator, avoiding the elevator from shaking left and right when conducting a compression experiment, which may cause the experiment to be unable to continue in severe cases, thereby improving stability during use.

[0005] According to the analysis of the technical contents disclosed in the above patents, the technical contents of the above existing patents are to conduct compression and collision tests on static elevators. However, in the actual use of elevators, various possible safety hazards may occur in the normal dynamic operation of the elevator, such as the situation where the elevator is out of control due to overspeeding and causing rapid descent or rise, etc. Therefore, for the collision and compression caused by safety accidents in the actual dynamic operation of the elevator, the experimental equipment in the existing technology cannot better simulate the situation more realistically; in addition, for the simulation experiment of the running posture of the elevator under earthquake conditions, the existing experimental equipment cannot better reflect it.

[0006] To this end, based on the above problems and in combination with the national standard in the "Elevator Test Method", the inventor of the present application hereby proposes a device for elevator anti-deformation impact compression test to solve the above problems in the prior art. Summary of the invention

[0007] The purpose of the present invention is to solve the technical problems raised in the above background technology and to provide a device for elevator anti-deformation impact compression test.

[0008] The above-mentioned purpose of the present invention is achieved like this:

[0009] A device for an elevator anti-deformation impact compression test, comprising an elevator test well frame and an elevator car test piece movably arranged in the inner cavity of the elevator test well frame, wherein a vibration simulation structure is arranged in the bottom area of ​​the inner cavity of the elevator test well frame, and a well frame moving base is arranged on the bottom surface of the elevator test well frame;

[0010] The elevator test derrick comprises a lower fixed plate at the bottom and an upper fixed plate at the top, and a channel steel column is welded at the four corners of the sides opposite to the lower fixed plate and the upper fixed plate; four car guide rails are fixed at the middle of the sides opposite to the lower fixed plate and the upper fixed plate; a hydraulic cylinder 2 is fixed on the side walls on both sides of the lower fixed plate, and a supporting foot is fixedly connected to the output shaft of the hydraulic cylinder 2;

[0011] The elevator car test piece includes a car test body and a PLC electric hoist arranged on the upper surface of the upper fixed plate, and 5-8 traction steel ropes are connected between the traction end of the PLC electric hoist and the top of the car test body, and a plurality of counterweight boxes are stacked in the inner cavity of the car test body;

[0012] The vibration simulation structure includes a box, a dual-axis motor fixed in the central area of ​​the box inner cavity, and two vibration members arranged in the box inner cavity in a left-right mirror symmetric manner; a rubber pad is fixed to the bottom surface of the dual-axis motor, and the rubber pad is fixedly connected to the bottom surface of the inner cavity of the box;

[0013] The vibration member includes a bottom plate, a rotating shaft rotatably connected to the rear side of the top surface of the bottom plate, and a piston cylinder hinged to the front side of the top surface of the bottom plate, and the ends of the rotating shafts that are away from each other are connected to a rotating disk, and the side of the rotating disk away from the rotating shaft is rotatably connected to a piston column that deviates from the center of the circle, and the end of the piston column away from the rotating disk is inserted into the inner cavity of the piston cylinder;

[0014] The derrick mobile base includes a shell, an encoding motor driving mainboard fixed in the middle area of ​​the shell cavity, and four encoding motors fixed in the four corners of the shell cavity, and the output shafts of the encoding motors are connected to omnidirectional wheels located outside the shell through couplings.

[0015] Furthermore, reinforcing ribs are provided between the surfaces of the side of the channel steel columns facing each other, and openings are provided between the front channel steel columns close to each other for observing the up and down movement status of the elevator car test piece, and a space for the elevator car test piece to move up and down is formed between the lower fixed plate and the upper fixed plate.

[0016] Furthermore, a partition is welded to the bottom area of ​​one side surface of the channel steel columns close to each other, the four corners of the top surface of the partition are fixedly connected to the bottom end of the car guide rail, and the bottom surface of the partition is fixedly connected to the upper surface of the box body.

[0017] Furthermore, a mounting seat is welded on the top surface of the upper fixing plate, and the top surface of the mounting seat is fixedly connected to the four corners of the bottom surface of the PLC electric winch by screws;

[0018] The counterweight boxes are stacked on each other and lead blocks are placed in the inner cavities of the counterweight boxes.

[0019] Furthermore, the top end surface of the shell is fixedly connected to the bottom surface of the lower fixing plate, and through holes for the output shaft of the encoder motor to penetrate and rotate are provided on both the left and right sides of the shell.

[0020] Furthermore, the bottom surface of the outer ring of the omnidirectional wheel is flush with the top of the telescopic shaft of the second hydraulic cylinder, and the bottom surface of the outer shell of the encoder motor is fixedly connected to the bottom of the inner cavity of the shell by bolts.

[0021] Furthermore, the bottom surface of the bottom plate is fixedly connected to the bottom surface of the inner cavity of the box, and two bearing seats adapted to the rotating shaft are installed on the rear side of the top surface of the bottom plate, and a support plate is fixed on the front side of the top surface of the bottom plate.

[0022] Furthermore, the ends of the rotating shafts close to each other are connected to the output shafts on both sides of the dual-axis motor through a coupling, and a cylinder is fixed on the side of the rotating disk away from the rotating shaft, which is offset from the center of the circle. The outer ring of the cylinder is sleeved with a sleeve, and the outer ring surface of the sleeve is connected to the end of the piston column away from the piston cylinder;

[0023] An axle pin penetrating the support plate is fixed to the side of the piston cylinder close to the support plate, and both front and rear ends of the piston cylinder are open, so that the end of the piston column away from the turntable can penetrate the piston cylinder and contact the inner cavity side wall of the box body.

[0024] Furthermore, the front side, rear side and left and right sides of the elevator test well frame are fixedly connected with square frames, and the inner side of the square frame is fixedly connected with a hydraulic cylinder 1, and the telescopic shaft of the hydraulic cylinder 1 is fixedly connected with a movable steel plate for impacting the front side, rear side and left and right sides of the car test body.

[0025] Furthermore, it also includes a control system for simulating an out-of-control state of an elevator, the control system including a position update module, a speed update module, an out-of-control state detection module, an emergency braking module and a simulation end module;

[0026] The position update module calculates the current position of the elevator using the following formula:

[0027] ;

[0028] in, For the moment The elevator location, For the moment The elevator speed, is the time step;

[0029] The speed update module updates the speed of the elevator according to the acceleration and direction of the elevator:

[0030] ;

[0031] in, For the moment The elevator acceleration;

[0032] The out-of-control state detection module is used to monitor the running state of the elevator, and trigger the out-of-control state when a sensor failure or control system abnormality is detected; in the out-of-control state detection module: an out-of-control state flag OOC is set to detect whether the elevator enters an out-of-control state, and trigger a corresponding acceleration increment according to the out-of-control state:

[0033] ;

[0034] The emergency brake module is used to automatically perform an emergency brake operation when the elevator exceeds the set safety range or the speed exceeds the maximum safety speed; in the emergency brake module: when the elevator position exceeds the allowable range or the speed exceeds the standard, the emergency brake is triggered and the elevator speed is set to zero:

[0035] ;

[0036] The simulation end module: when the elevator speed is zero and the position is within the allowable range, the simulation ends.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The experimental equipment of the present invention can simulate the anti-deformation impact compression test of the elevator in the state of high-speed upward and high-speed falling more realistically through the elevator test derrick composed of the frame structure, the car test body and the controllable PLC electric winch designed therein, and the control system designed to simulate the out-of-control state of the elevator, so as to realize the collision and compression test caused by safety accidents in the actual dynamic operation process of the elevator; and the present invention designs a load adjustment structure inside the car test body, so as to adjust the load weight of the car test body according to the experimental situation, so as to simulate the collision of car test bodies with different weights at the same speed;

[0039] 2. In addition, the experimental equipment of the present invention can simulate the impact and compression conditions suffered by the elevator in an earthquake situation through the vibration piece designed at the bottom of the elevator test derrick, and considers multiple safety hazard simulations for the elevator's anti-deformation impact and compression test;

[0040] 3. The experimental equipment of the present invention also facilitates the free movement and fixation of the equipment by designing a new derrick movable base structure at the bottom of the elevator experimental derrick. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a front view schematic diagram of the elevator test derrick;

[0042] Figure 2 It is a rear view schematic diagram of the elevator test derrick;

[0043] Figure 3 It is a left side schematic diagram of the elevator test derrick;

[0044] Figure 4 It is a right side view schematic diagram of the elevator test derrick;

[0045] Figure 5 This is a top view of the elevator test derrick;

[0046] Figure 6 This is a bottom-up schematic diagram of the elevator test derrick;

[0047] Figure 7 is a top view schematic diagram of a mobile base;

[0048] Figure 8 It is a top view schematic diagram of the vibration simulation structure;

[0049] Fig. 9It is a top view schematic diagram of the vibration component.

[0050] In the figure: 1. Elevator test derrick; 11. Lower fixed plate; 12. Support foot; 13. Hydraulic cylinder 2; 14. Partition; 15. Car guide rail; 16. Channel steel column; 17. Reinforcement rib; 18. Upper fixed plate; 2. Elevator car test piece; 21. Car test body; 22. Traction steel rope; 23. PLC electric winch; 24. Mounting seat; 25. Counterweight box; 3. Vibration simulation structure; 31. Box; 32. Dual-axis motor; 33. Vibration member; 34. Rubber pad; 331. Bottom plate; 332. Support plate; 333. Piston cylinder; 334. Piston column; 335. Turntable; 336. Rotating shaft; 337. Bearing seat; 4. Moving base of derrick; 41. Shell; 42. Encoder motor; 43. Omnidirectional wheel; 44. Encoder motor drive mainboard; 5. Square frame; 6. Movable steel plate; 7. Hydraulic cylinder 1. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0052] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0053] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is 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 direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0054] Reference Figure 1-Figure 9 The figure shows a preferred embodiment of the present invention.

[0055] Example: Figure 1-Figure 2 As shown, this embodiment 1 provides a device for elevator anti-deformation impact compression test, including an elevator test well frame 1, a movable elevator car test piece 2 is installed in the inner cavity of the elevator test well frame 1, and a vibration simulation structure 3 for simulating earthquake vibration scenarios is installed in the bottom area of ​​the inner cavity of the elevator test well frame 1. In addition, a well frame moving base 4 is fixedly connected to the bottom surface of the elevator test well frame 1 to support the test equipment in a stable posture and to facilitate the movement of the test equipment.

[0056] The elevator test well frame 1 in the present embodiment includes a lower fixed plate 11 at the bottom and an upper fixed plate 18 at the top, and a channel steel column 16 is respectively fixedly welded to the four corners of the side where the lower fixed plate 11 and the upper fixed plate 18 face each other and are close to each other, and four car guide rails 15 for active connection with the elevator car test piece 2 are also fixedly installed in the middle position of the side where the lower fixed plate 11 and the upper fixed plate 18 face each other and are close to each other, and a hydraulic cylinder 2 13 is fixed on the side walls on both sides of the lower fixed plate 11, and a support foot 12 is fixedly connected to the output shaft of the hydraulic cylinder 2 13.

[0057] The elevator car test piece 2 includes a car test body 21 and a PLC electric hoist 23 fixed on the upper surface of the upper fixed plate 18 (used to pull the car test body 21 to provide drive, and the drive speed can be set to simulate the out-of-control state of the car test body 21). The traction end of the PLC electric hoist 23 in this embodiment is connected to the top of the car test body 21 through 8 traction steel ropes 22, and a plurality of counterweight boxes 25 are stacked in the inner cavity of the car test body 21.

[0058] See also Figure 8 As shown, it is a schematic diagram of the vibration simulation structure 3 in the present embodiment, and the vibration simulation structure 3 includes a box body 31, a dual-axis motor 32 fixed in the central area of ​​the inner cavity of the box body 31, and two vibration members 33 arranged in the inner cavity of the box body 31 in a left-right mirror-symmetrical manner; through the vibration simulation structure 3 of the present embodiment, it is possible to realize the simulation of earthquake vibration conditions in the elevator anti-deformation impact compression experiment.

[0059] See also Fig. 9 As shown, it is a schematic diagram of the structure of the vibration member 33 in the present embodiment, the vibration member 33 includes a base plate 331, a rotating shaft 336 rotatably connected to the rear side of the top surface of the base plate 331, and a piston cylinder 333 hinged to the front side of the top surface of the base plate 331, and the end of the rotating shaft 336 away from each other is connected to a turntable 335, a side of the turntable 335 away from the rotating shaft 336 is rotatably connected to a piston column 334 deviating from the center position, and the end of the piston column 334 away from the turntable 335 is inserted into the inner cavity of the piston cylinder 333.

[0060] See also Figure 7 As shown, the derrick mobile base 4 in this embodiment includes a shell 41, an encoding motor driving mainboard 44 fixed in the middle area of ​​the inner cavity of the shell 41, and four encoding motors 42 fixed in the four corners of the inner cavity of the shell 41, and the output shafts of the encoding motors 42 are connected to omnidirectional wheels 43 located outside the shell 41 through couplings. Through the design of the above components and structures, the derrick mobile base 4 can facilitate the movement and position transfer of the experimental equipment while achieving stable support for the experimental equipment.

[0061] See also Figure 2 As shown, in this embodiment, the channel steel columns 16 are welded with reinforcing ribs 17 between the surfaces of the sides facing each other and close to each other, so as to improve the stability of the frame structure of the experimental equipment; and there is an opening between the front channel steel columns 16 close to each other, so as to facilitate the experimental staff to observe the up and down movement state of the elevator car test piece 2. A space for the elevator car test piece 2 to move up and down is formed between the lower fixing plate 11 and the upper fixing plate 18 close to each other. A partition 14 is welded to the bottom area of ​​one side surface where the channel steel columns 16 are close to each other, and the four corners of the top surface of the partition 14 are fixedly connected to the bottom end of the car guide rail 15, and the bottom surface of the partition 14 is fixedly connected to the upper surface of the box body 31; a mounting seat 24 is welded to the top surface of the upper fixed plate 18, and the top surface of the mounting seat 24 is fixedly connected to the four corners of the bottom surface of the PLC electric winch 23 by screws, and the counterweight boxes 25 are stacked on each other and lead blocks are placed in the inner cavity of the counterweight boxes 25. The weight of the lead blocks in this embodiment is designed to be similar to the weight of an adult, that is, between 45kg and 100kg, and the weight of the lead blocks can be adjusted according to the actual experimental conditions.

[0062] See also Figure 7 As shown, the top end surface of the shell 41 in this embodiment is fixedly connected to the bottom surface of the lower fixed plate 11, and through holes are provided on the left and right sides of the shell 41 for the output shaft of the encoding motor 42 to pass through and rotate; the bottom surface of the outer ring of the omnidirectional wheel 43 is flush with the top of the telescopic shaft of the hydraulic cylinder 13, and the bottom surface of the outer shell of the encoding motor 42 is fixedly connected to the bottom of the inner cavity of the shell 41 by bolts.

[0063] See also Figure 8 and Fig. 9 As shown, the bottom surface of the bottom plate 331 in this embodiment is fixedly connected to the bottom surface of the inner cavity of the box body 31, and two bearing seats 337 adapted to the rotating shaft 336 are installed on the rear side of the top surface of the bottom plate 331, and a support plate 332 is fixed on the front side of the top surface of the bottom plate 331; a rubber pad 34 is fixed to the bottom surface of the dual-axis motor 32, and the rubber pad is fixedly connected to the bottom surface of the inner cavity of the box body 31. The ends of the rotating shafts 336 that are close to each other are connected to the output shafts on both sides of the dual-axis motor 32 through a coupling, and a cylinder is fixed on the side of the turntable 335 that is away from the rotating shaft 336 and deviates from the center of the circle. The outer ring of the cylinder is sleeved with a sleeve, and the outer ring surface of the sleeve is connected to the end of the piston column 334 that is away from the piston cylinder 333; an axle pin that passes through the support plate 332 is fixed on the side of the piston cylinder 333 that is close to the support plate 332, and the front and rear ends of the piston cylinder 333 are both in an open state, so that the end of the piston column 334 that is away from the turntable 335 can pass through the piston cylinder 333 and contact the inner cavity side wall of the box body 31.

[0064] Reference Figure 1-Figure 6As shown, the front side, rear side and left and right sides of the elevator test derrick 1 in this embodiment are fixedly connected with a square frame 5, and the inner side of the square frame 5 is fixedly connected with a hydraulic cylinder 7, and the telescopic shaft of the hydraulic cylinder 7 is fixedly connected with a movable steel plate 6 for impacting the front side, rear side and left and right sides of the car test body 21; in this embodiment, a hydraulic station and hydraulic pipeline for providing hydraulic pressure for the hydraulic cylinder 7 are arranged around the elevator test derrick 1, and the inner side end face of the square frame 5 on the front side is fixedly connected to the front side surface of the elevator test derrick 1 by bolts, and the inner side end faces of the square frame 5 on the rear side and the left and right sides are respectively welded to the rear side and the left and right sides of the elevator test derrick 1. Through this design, the impact compression test of the elevator in a static state can also be realized separately.

[0065] Working principle:

[0066] When the experimental equipment of the present invention is used to conduct an anti-deformation impact compression test on an elevator, the PLC electric hoist 23, the traction steel rope 22 and the car guide rail 15 designed on the experimental equipment are used to control the car test body 21 to move up and down in the inner cavity of the elevator test shaft frame, and the up and down speeds of the car test body 21 in the elevator shaft frame are achieved by controlling the traction speed of the PLC electric hoist 23, so as to simulate the posture of the elevator during rapid falling or rapid rising, and realize the collision and compression test caused by safety accidents during the actual dynamic operation of the elevator. At the same time, during the experiment, lead blocks of different weights can be placed inside the counterweight box 25, and the counterweight boxes 25 can be stacked up and down to simulate the posture of the car test body 21 falling or rising rapidly under different load conditions, which can simulate the collision of car test bodies under different weights at the same speed.

[0067] In addition, during the experimental operation of the car test body 21, the dual-axis motor 32 drives the rotating shaft 336 to rotate, and drives the turntable 335 to rotate, so that one end of the piston column 334 makes a circular motion along the center of the turntable 335, and the other end of the piston column 334 moves inside the piston cylinder 333, and passes through the piston cylinder 333 to contact the inner wall of the box body 31, and vibration is generated through the contact between the piston column 334 and the box body 31, so that the vibration of the elevator shaft is transmitted to the car test body 21, which can simulate the state of the car test body 21 in an earthquake environment.

[0068] Furthermore, after the telescopic shaft of the hydraulic cylinder 2 13 in the device is retracted, the encoder motor driving mainboard 44 is used to control the operation of the encoder motor 42, and the omnidirectional wheel 43 in contact with the ground is driven to rotate, which can drive the elevator shaft to move horizontally, horizontally, and move, so that the elevator test shaft can move. When the car test body 21 falls or rises quickly to perform an impact test with the partition 14 or the upper fixed plate 18, the car test body 21 falls onto the partition 14, and the four hydraulic cylinders 1 7 around the elevator test shaft frame 1 provide an inward impact force for the movable steel plate 6, and a multi-directional impact test is performed by means of the four-sided rapid impact contact between the movable steel plate 6 and the car test body 21.

[0069] In this embodiment, the present invention also provides a control system for simulating an out-of-control state of an elevator. The system combines the hardware structure and control system of the device to verify the responsiveness and safety of the elevator in an out-of-control situation. The specific operation is as follows:

[0070] 1. System initialization:

[0071] First, the elevator test equipment is initialized through the control system, and the initial position, speed, acceleration and direction of the elevator are set. In the initial state, the elevator position is set to the middle of the test well, the speed is zero, the acceleration is zero, and the direction is set to upward.

[0072] 2. Normal operation status simulation:

[0073] In normal operation of the elevator, the PLC electric winch controls the up and down movement of the elevator car according to the preset speed and direction. The system updates the current position of the elevator in real time through the following formula:

[0074] ;

[0075] And update the speed of the elevator by the following formula:

[0076] ;

[0077] Under normal conditions, the acceleration Keep constant, the elevator car runs smoothly according to the set speed and direction.

[0078] 3. Out of control state trigger:

[0079] In order to simulate the behavior of an elevator in an out-of-control state, the system will trigger an out-of-control state when a sensor failure, control system abnormality or other emergencies are detected. At this time, the control system will increase the acceleration of the elevator and may change the direction of movement of the elevator. The specific formula is as follows:

[0080] ;

[0081] in, For the moment The acceleration value, is the acceleration increment, It is a control status flag. A value of 1 indicates an increase in acceleration, and a value of -1 indicates a decrease in acceleration. If the acceleration remains constant, the acceleration increment is zero; if the acceleration changes, the acceleration increment It will directly affect the acceleration of the elevator, causing the elevator to speed up or slow down.

[0082] 4. Operation in out-of-control state:

[0083] In the out-of-control state, the speed of the elevator will increase rapidly, and the position update formula is as follows:

[0084] ;

[0085] ;

[0086] in, Indicates the direction of the elevator's movement, with a value of 1 (upward) or -1 (downward).

[0087] 5. Emergency brake mechanism:

[0088] When it is detected that the elevator's position is out of the allowable range or the speed exceeds the safe range, the system will automatically trigger the emergency braking mechanism and set the elevator speed to zero to ensure safety.

[0089] 6. End of simulation:

[0090] At the same time, the elevator car will be locked in the current position by the emergency brake device to prevent further loss of control. When the emergency brake is successfully executed, the simulation system restores the elevator speed and position to a safe state. At this time, if the elevator position is within the set safety range and the speed is zero, the simulation ends.

[0091] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for elevator anti-deformation impact compression test, characterized in that: The invention comprises an elevator test well frame (1) and an elevator car test piece (2) movably arranged in the inner cavity of the elevator test well frame (1), wherein a vibration simulation structure (3) is provided in the inner cavity bottom area of ​​the elevator test well frame (1), and a well frame movable base (4) is provided on the bottom surface of the elevator test well frame (1); The elevator test derrick (1) comprises a lower fixed plate (11) at the bottom and an upper fixed plate (18) at the top, wherein a channel steel column (16) is welded to the four corners of the sides opposite to each other of the lower fixed plate (11) and the upper fixed plate (18); four car guide rails (15) are fixed to the middle positions of the sides opposite to each other of the lower fixed plate (11) and the upper fixed plate (18); a hydraulic cylinder (13) is fixed to the side walls on the left and right sides of the lower fixed plate (11), and a support foot (12) is fixedly connected to the output shaft of the hydraulic cylinder (13); The elevator car test piece (2) comprises a car test body (21) and a PLC electric hoist (23) arranged on the upper surface of an upper fixed plate (18), and 5 to 8 traction steel ropes (22) are connected between the traction end of the PLC electric hoist (23) and the top of the car test body (21), and a plurality of counterweight boxes (25) are stacked in the inner cavity of the car test body (21); The vibration simulation structure (3) comprises a box (31), a dual-axis motor (32) fixed to the central area of ​​the inner cavity of the box (31), and two vibration members (33) arranged in the inner cavity of the box (31) in a left-right mirror-symmetrical manner; a rubber pad (34) is fixed to the bottom surface of the dual-axis motor (32), and the rubber pad is fixedly connected to the bottom surface of the inner cavity of the box (31); The vibration member (33) comprises a bottom plate (331), a rotating shaft (336) rotatably connected to the rear side of the top surface of the bottom plate (331), and a piston cylinder (333) hinged to the front side of the top surface of the bottom plate (331), wherein one end of the rotating shaft (336) away from each other is connected to a rotating disk (335), a surface of the rotating disk (335) away from the rotating shaft (336) is rotatably connected to a piston column (334) deviating from the center position, and one end of the piston column (334) away from the rotating disk (335) is inserted into the inner cavity of the piston cylinder (333); The derrick mobile base (4) comprises a shell (41), an encoding motor drive mainboard (44) fixed in the middle region of the inner cavity of the shell (41), and four encoding motors (42) fixed in the four corner regions of the inner cavity of the shell (41), and the output shafts of the encoding motors (42) are connected to omnidirectional wheels (43) located outside the shell (41) via couplings.

2. The device for elevator anti-deformation impact compression test according to claim 1 is characterized in that: Reinforcing ribs (17) are provided between mutually facing surfaces of the channel steel columns (16), and an opening is provided between the front channel steel columns (16) close to each other for observing the upward and downward movement of the elevator car test piece (2), and a space for the upward and downward movement of the elevator car test piece (2) is formed between the lower fixing plate (11) and the upper fixing plate (18).

3. The device for elevator anti-deformation impact compression test according to claim 1 is characterized in that: A partition plate (14) is welded to the bottom area of ​​the surface of one side of the channel steel columns (16) that are close to each other, the four corners of the top surface of the partition plate (14) are fixedly connected to the bottom end of the car guide rail (15), and the bottom surface of the partition plate (14) is fixedly connected to the upper surface of the box body (31).

4. The device for elevator anti-deformation impact compression test according to claim 1 is characterized in that: A mounting seat (24) is welded to the top surface of the upper fixing plate (18), and the top surface of the mounting seat (24) is fixedly connected to the four corners of the bottom surface of the PLC electric winch (23) by means of screws; The counterweight boxes (25) are stacked on top of each other and lead blocks are placed in the inner cavities of the counterweight boxes (25).

5. The device for elevator anti-deformation impact compression test according to claim 4 is characterized in that: The top end surface of the housing (41) is fixedly connected to the bottom surface of the lower fixing plate (11), and through holes are provided on both left and right sides of the housing (41) for the output shaft of the encoding motor (42) to pass through and rotate.

6. The device for elevator anti-deformation impact compression test according to claim 1 is characterized in that: The bottom surface of the outer ring of the omnidirectional wheel (43) is flush with the top of the telescopic shaft of the second hydraulic cylinder (13), and the bottom surface of the outer shell of the encoding motor (42) is fixedly connected to the bottom of the inner cavity of the housing (41) by bolts.

7. The device for elevator anti-deformation impact compression test according to claim 1 is characterized in that: The bottom surface of the bottom plate (331) is fixedly connected to the bottom surface of the inner cavity of the box body (31), and two bearing seats (337) adapted to the rotating shaft (336) are installed on the rear side of the top surface of the bottom plate (331), and a support plate (332) is fixed on the front side of the top surface of the bottom plate (331).

8. The device for elevator anti-deformation impact compression test according to claim 7 is characterized in that: The ends of the rotating shafts (336) close to each other are connected to the output shafts on both sides of the dual-axis motor (32) via a coupling, and a cylinder is fixed on the side of the rotating disk (335) away from the rotating shaft (336) at a position deviating from the center of the circle, and the outer ring of the cylinder is sleeved with a sleeve, and the outer ring surface of the sleeve is connected to the end of the piston column (334) away from the piston cylinder (333); A shaft pin penetrating the support plate (332) is fixed to a side of the piston cylinder (333) close to the support plate (332), and both front and rear ends of the piston cylinder (333) are open, so that an end of the piston column (334) away from the rotating disk (335) can penetrate the piston cylinder (333) and contact the inner cavity side wall of the box body (31).

9. The device for elevator anti-deformation impact compression test according to claim 1, characterized in that: The front side, rear side, and left and right sides of the elevator test well frame (1) are fixedly connected to a square frame (5), and the inner side of the square frame (5) is fixedly connected to a hydraulic cylinder 1 (7), and the telescopic shaft of the hydraulic cylinder 1 (7) is fixedly connected to a movable steel plate (6) for impacting the front side, rear side, and left and right sides of the car test body (21).

10. The device for elevator anti-deformation impact compression test according to any one of claims 1 to 9, characterized in that: Also included is a control system for simulating an out-of-control state of an elevator, the control system comprising a position update module, a speed update module, an out-of-control state detection module, an emergency braking module and a simulation end module; The position update module calculates the current position of the elevator using the following formula: ； in, For the moment The elevator location, For the moment The elevator speed, is the time step; The speed update module updates the speed of the elevator according to the acceleration and direction of the elevator: ； in, For the moment The elevator acceleration; The out-of-control state detection module is used to monitor the running state of the elevator, and trigger the out-of-control state when a sensor failure or control system abnormality is detected; in the out-of-control state detection module: an out-of-control state flag OOC is set to detect whether the elevator enters an out-of-control state, and trigger a corresponding acceleration increment according to the out-of-control state: ； The emergency brake module is used to automatically perform an emergency brake operation when the elevator exceeds the set safety range or the speed exceeds the maximum safety speed; in the emergency brake module: when the elevator position exceeds the allowable range or the speed exceeds the standard, the emergency brake is triggered and the elevator speed is set to zero: ； The simulation end module ends the simulation when the elevator speed is zero and the position is within the allowable range.

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