Remote control elevator load braking test device and use method thereof

Abstract

The invention relates to the technical field of elevator braking tests, in particular to a remote control elevator load braking test device and a using method thereof.The remote control elevator load braking test device comprises a vehicle body, a control mechanism is arranged in the vehicle body and comprises an electric telescopic rod parallel to the top of the vehicle body, and the control mechanism is fixedly connected with a material taking mechanism; the material taking mechanism comprises a fixing pipe, and an adjusting mechanism is arranged in the fixing pipe. The position of the material taking mechanism is changed through the control mechanism, weights on the other intelligent trolley are flexibly taken in cooperation with the adjusting mechanism, a U-shaped limiting groove enables a sliding column to horizontally rotate and vertically move under the condition that the moving direction of an electric telescopic rod is not changed, the adjusting mechanism is triggered in the downward moving process of the sliding column, and the weights on the other intelligent trolley are taken out. The sliding block and the first clamping groove are clamped or separated, the placing number of weights is selected according to the test requirement, the braking state of the elevator under the condition of different loads is tested, and different load tests can be conducted on the two elevators at the same time under the condition that the two intelligent trolleys load the weights.

Description

Technical Field

[0001] The invention relates to the technical field of elevator braking test, in particular to a remote-controlled elevator load braking test device and a use method thereof. Background Art

[0002] The elevator load brake test is an important part of elevator safety testing. It aims to verify the elevator's stopping ability and safety performance under overload conditions to ensure the safety of passengers. It is one of the important means of evaluating elevator safety performance. Through this test, the elevator's stopping ability and safety performance under overload conditions can be verified, providing a basis for the daily maintenance and upkeep of the elevator. It also helps to discover potential problems with the elevator and take timely measures to repair and improve it. Test weights are required for elevator load brake tests to simulate the weight of items in the elevator. Because the weights are heavy, handling tools are usually required to assist.

[0003] The Chinese invention patent with publication number CN110617952B discloses an elevator load safety brake test device, which relates to the technical field of test devices. The invention includes an elevator car and a counterweight device located inside the elevator car, the counterweight device includes a bottom plate and an extrusion plate, a plurality of rollers are fixedly installed at the bottom end of the bottom plate, two electric telescopic rods connected to the same extrusion plate are fixedly installed on the two sides of the bottom plate, a cross-shaped slide groove is provided on both sides of the upper surface of the bottom plate, and two sliding assemblies are provided on the bottom plate, the sliding assembly includes a plurality of cross-shaped sliders, the cross-shaped sliders are located inside the cross-shaped slide grooves, and the cross-shaped sliders slide in cooperation with the cross-shaped slide grooves. By setting the counterweight device, the invention can make the counterweight box body move inside the elevator car like a person, thereby reducing the error of the test.

[0004] However, in daily work and life, most buildings are usually equipped with two or more elevators. During the elevator load braking test, it is necessary to ensure that the building personnel can use the elevator normally. All elevators cannot be closed for use and the elevators need to be tested in turn. The braking test of an elevator requires testing the braking condition of the elevator under different loads. Therefore, it may be necessary to frequently move the counterweights during this period. Manual transportation is time-consuming and labor-intensive. Therefore, it takes a long time to test an elevator. The second elevator can only be tested after one elevator completes the braking test with different loads. When multiple elevators need to be tested, each elevator is tested one by one in turn, which takes more time, affecting the detection efficiency. In addition, whether it is manual transportation or tool transportation, the counterweight device in the above-mentioned patent needs to be manually adjusted, and the counterweights that are not used temporarily can only be put aside and cannot be effectively utilized.

[0005] Therefore, the present invention provides a remote-controlled elevator load braking test device and a method for using the same. Summary of the invention

[0006] In view of the problem of carrying counterweights of different load levels for elevators and the problem of low testing efficiency in the prior art, the present invention provides a remote-controlled elevator load brake test device and a use method thereof.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a remote-controlled elevator load brake test device and a method of using the same, comprising an intelligent trolley and a trolley body, wherein a base is fixedly installed at the bottom of the trolley body, a control mechanism is arranged in the trolley body, the control mechanism comprises an electric telescopic rod arranged parallel to the top of the trolley body, the control mechanism is fixedly connected to a material taking mechanism, the material taking mechanism comprises a fixed tube, and an adjustment mechanism is arranged in the fixed tube;

[0008] A control mechanism is configured to control the extension and retraction of the electric telescopic rod to move a sliding column vertically arranged and matched with the electric telescopic rod, thereby moving the material taking mechanism;

[0009] The material taking mechanism is configured to enter the first slot on the top of the weight placed on the top of the base under the drive of the control mechanism, and when the sliding block slidably connected to the side wall of the fixed tube abuts against the first slot, the weight is driven to move under the action of the control mechanism;

[0010] The adjusting mechanism is assembled so that the first sliding sleeve slidably connected to the bottom of the fixed tube moves upward through the downward movement of the fixed tube, thereby pushing the movable block against the sliding block upward, so that the sliding block extends out of the fixed tube.

[0011] Preferably, the control mechanism also includes a fixed frame that passes through the top of the vehicle body and is fixedly connected to the vehicle body, a fixed rod is fixedly connected to the inner wall of the top of the fixed frame, a helical gear column is fixedly connected to the top of the sliding column, a helical tooth plate is fixedly connected to the side of the electric telescopic rod close to the sliding column, the helical tooth plate is meshed with the helical gear column, a telescopic arm is fixedly connected to the lower end of the sliding column, the helical gear column is hollow, the fixed rod is rotatably and slidably connected to the inside of the helical gear column, the electric telescopic rod slides through the fixed frame, and the sliding column rotates and slides through the bottom of the fixed frame.

[0012] Preferably, a U-shaped limit groove is opened on the outer wall of the sliding column, and the U-shaped limit groove includes two straight grooves and a horizontal groove. One side of the lower end of the fixing frame is fixedly connected to the limit column, and the end of the limit column away from the fixing frame is slidably connected to the U-shaped limit groove.

[0013] Preferably, the material picking mechanism also includes a connecting column fixedly connected to one end of the telescopic arm away from the sliding column, the bottom of the connecting column is fixedly connected to the fixed tube, the side wall of the fixed tube is provided with a second slot, the sliding block passes through the second slot and is slidably connected thereto, the number of the second slots corresponds to the number of sliding blocks, and the end of the sliding block close to the central axis of the fixed tube is set as an inclined surface and abuts against the movable block.

[0014] Preferably, the adjusting mechanism also includes a first spring fixedly connected to the top of the inner wall of the fixed tube, one end of the first spring away from the fixed tube is fixedly connected to the top of the movable block, the bottom of the fixed tube is fixedly connected to a connecting tube, the bottom of the connecting tube is slidably connected to a first sliding sleeve, the first sliding sleeve passes through the bottom of the connecting tube, and the upper end of the first sliding sleeve is slidably sleeved with a second sliding sleeve, a group of first limit blocks are fixedly connected to the inner wall of the connecting tube, second limit blocks and third clamping grooves are alternately arranged between adjacent first limit blocks, the first limit block and the second limit block are both fixedly connected to the inner wall of the connecting tube, the top of the first sliding sleeve is fixedly connected with teeth, the outer wall of the first sliding sleeve is fixedly connected with a clamping block, the outer wall of the upper end of the second sliding sleeve is fixedly connected with the third limit block, and a pressure sensor is arranged at the bottom of the first sliding sleeve.

[0015] Preferably, the upper end of the first limit block, the upper end of the second limit block and the lower end of the third limit block are all provided with pointed ends, the tip of the second limit block and the tip of the first limit block are arranged in the same direction, and the upper end of the tip of the second limit block matches with the lower end of the tip of the first limit block, the tip of the first limit block and the tip of the second limit block both match with the tip of the third limit block, and the thickness of the first limit block is greater than the thickness of the second limit block.

[0016] Preferably, the number of the third limiting blocks corresponds to the number of the third card slots, and the card blocks are slidably connected to the third card slots.

[0017] Preferably, the sliding block is fixedly connected to fixed plates on both sides of one end close to the movable block, the fixed plate is fixedly connected to a second spring on one side close to the inner wall of the fixed tube, the second spring is fixedly connected to the inner wall of the fixed tube at one end away from the fixed plate, the movable block is set as a frustum that is narrow at the top and wide at the bottom, and the movable block cooperates with the sliding block.

[0018] Preferably, a limit seat is fixedly installed on the top of the base, the limit seat cooperates with the weight, and the first slot is a convex circular slot.

[0019] Preferably, a method for using a remote-controlled elevator load brake test device comprises the following steps:

[0020] S1: remotely control two identical smart cars to automatically approach each other so that their tails are aligned and connected, and brake and fix the wheels of the smart cars. One of the smart cars is not equipped with a control mechanism, a material-retrieving mechanism and an adjustment mechanism. A set of identical weights is placed in advance on the smart car with the material-retrieving mechanism installed. After the tails of the two smart cars are connected, the electric telescopic rod is started, so that the sliding column drives the material-retrieving mechanism to move vertically downward into the first card slot;

[0021] S2: When the bottom of the first sliding sleeve abuts against the bottom of the first slot, the first sliding sleeve moves upward to drive the movable block to move upward until the position of the movable block is limited. During this process, the sliding block moves out of the fixed tube under the push of the movable block;

[0022] S3: The electric telescopic rod operates in the reverse direction, and the sliding column moves up to the highest point and then rotates horizontally, driving the weight engaged with the material-retrieving mechanism to come to another smart trolley and then move vertically downward. When placing, the first sliding sleeve is pushed upward again, causing the movable block to move downward, and the sliding block moves into the fixed tube and separates from the side wall of the first slot, and the weight is placed in another smart trolley;

[0023] S4: The electric telescopic rod operates in the reverse direction again to return to the initial position. The number of weights carried by the smart car is gradually changed according to the test requirements. The two smart cars can be remotely controlled to enter different elevators respectively. After the wheels are fixed, the test can begin.

[0024] Beneficial effects of the present invention:

[0025] (1) The present invention discloses a remote-controlled elevator load braking test device and a method for using the device. The control mechanism changes the position of the material-grabbing mechanism, and the adjustment mechanism is used to flexibly pick up the weights on another smart car without manual handling. The U-shaped limit groove allows the sliding column to rotate horizontally and move vertically without changing the moving direction of the electric telescopic rod. The adjustment mechanism is triggered during the downward movement of the sliding column, so that the sliding block engages or separates with the first slot. The number of weights placed is gradually changed according to the test requirements to test the braking state of the elevator under different loads. When the two smart cars are both loaded with weights, different load tests can be performed on the two elevators at the same time. Compared with the prior art, the utilization rate of the weights is improved and the speed of elevator testing is increased.

[0026] (2) The present invention describes a remote-controlled elevator load brake test device and a method of using the same. When the weight moves from one smart car to another smart car and needs to be separated from the material-removing mechanism, the first sliding sleeve is pushed upward and pushes the third limit block to separate from the second limit block, so that the third limit block enters the third slot. Under the action of the first spring and gravity, the movable block and the first sliding sleeve move downward. The truncated cone-shaped movable block, which is narrow at the top and wide at the bottom, can reduce the resistance of the first spring when it is reset, so that the sliding block can move quickly and easily into the connecting tube, thereby realizing the rapid separation of the material-removing mechanism and the weight.

[0027] (3) The remote-controlled elevator load brake test device and its use method described in the present invention, although its overall concept is similar to the mechanical arm of the prior art, it is not only far superior to the mechanical arm in terms of economy, but also far superior to the prior art in terms of overall control difficulty. The control is more mechanized, the probability of device failure is also lower, and the parts are easy to repair and replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Figure 1 A schematic diagram of the connection of the smart car provided by the present invention;

[0030] Figure 2 A schematic diagram of the structure of the intelligent car provided by the present invention;

[0031] Figure 3 A schematic diagram of the internal structure of a vehicle body provided by the present invention;

[0032] Figure 4 A cross-sectional view of the internal structure of the fixing frame provided by the present invention;

[0033] Figure 5 for Figure 4 A magnified image of point A;

[0034] Figure 6 A schematic diagram of the connection between the control mechanism and the material taking mechanism provided by the present invention;

[0035] Figure 7 A cross-sectional view of the internal structure of the fixed tube provided by the present invention;

[0036] Figure 8 A cross-sectional view of a fixed pipe provided by the present invention;

[0037] Fig. 9 A schematic diagram of the adjustment mechanism provided by the present invention;

[0038] Fig.10 A schematic diagram of the connection between the first sliding sleeve and the second sliding sleeve provided by the present invention;

[0039] Fig.11 A schematic diagram of the connection of the connecting pipe, the first sliding sleeve and the second sliding sleeve provided by the present invention;

[0040] Fig.12 A schematic diagram of the connection between the first limiting block and the second limiting block provided by the present invention;

[0041] Fig.13 A cross-sectional view of a weight provided by the present invention.

[0042] In the figure: 1, vehicle body; 2, base; 3, limit seat; 4, weight; 41, first slot; 5, control mechanism; 50, fixed rod; 51, fixed frame; 52, sliding column; 53, bevel gear column; 54, U-shaped limit slot; 541, straight slot; 542, horizontal slot; 55, limit column; 56, telescopic arm; 57, electric telescopic rod; 58, bevel gear plate; 6, material taking mechanism; 61, connecting column; 62, fixed pipe; 63, second slot; 64, sliding block; 7, adjustment mechanism; 71, movable block; 72, first spring; 73, connecting pipe; 74, first limit block; 75, second limit block; 76, third slot; 77, first sliding sleeve; 78, block; 79, teeth; 710, second sliding sleeve; 711, third limit block; 712, fixed plate; 713, second spring. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0044] Example 1: Figure 1-Figure 13As shown, a remote-controlled elevator load brake test device and a method of using the same according to the present invention comprises a car body 1, a base 2 is fixedly installed at the bottom of the car body 1, a control mechanism 5 is arranged inside the car body 1, the control mechanism 5 comprises an electric telescopic rod 57 arranged parallel to the top of the car body 1, the control mechanism 5 is fixedly connected to a material taking mechanism 6, the material taking mechanism 6 comprises a fixed tube 62, and an adjustment mechanism 7 is arranged inside the fixed tube 62; the control mechanism 5 is configured to control the extension and retraction of the electric telescopic rod 57 so that a sliding column 52 arranged vertically and matched with the electric telescopic rod 57 moves, thereby The material-taking mechanism 6 moves; the material-taking mechanism 6 is configured to, under the drive of the control mechanism 5, enter the first slot 41 opened on the top of the weight 4 placed on the top of the base 2. When the sliding block 64 slidably connected to the side wall of the fixed tube 62 abuts against the first slot 41, the weight 4 is displaced under the action of the control mechanism 5; the adjusting mechanism 7 is configured to move the first sliding sleeve 77 slidably connected to the bottom of the fixed tube 62 upward through the downward movement of the fixed tube 62, thereby pushing the movable block 71 abutting against the sliding block 64 upward, so that the sliding block 64 extends out of the fixed tube 62.

[0045] In the present embodiment, the vehicle body 1 adopts a remote-controlled smart car, which is provided with a control center. The electric telescopic rod 57, the telescopic arm 56 and the pressure sensor at the bottom of the first sliding sleeve 77 are electrically connected to the controller of the remote-controlled smart car, and a variety of sensor components for detection and recording can be integrated inside. As a prior art, the remote-controlled smart car has a high technical level and broad application prospects. This is not an improvement direction of the present application, so it will not be described in detail. In the present embodiment, two identical smart cars are needed, one of which is not equipped with a control mechanism 5, a material-picking mechanism 6 and an adjustment mechanism 7. On the smart car equipped with the material-picking mechanism 6, a group of weights 4 are vertically stacked in the limit seat 3 in advance by a handling tool. When in use, the two smart cars are automatically controlled by remote control to approach each other and make the rear ends of the cars fit together and connect, such as Figure 1In the state shown, after the wheels are fixed, the electric telescopic rod 57 is started, so that the bevel gear column 53 meshing with the bevel gear plate 58 moves vertically downward. During this process, the limit column 55 slides in the straight groove 541, and the material-taking mechanism 6 moves vertically downward and reaches the first card slot 41 of the uppermost weight 4. The bottom of the first sliding sleeve 77 abuts against the bottom of the first card slot 41, so that the first sliding sleeve 77 pushes the second sliding sleeve 710 to move upward under the abutment. When the lower end of the third limit block 711 abuts against the upper end of the second limit block 75, the position of the second sliding sleeve 710 is limited. At the same time, the movable block 71 moves upward and is fixed under the push of the second sliding sleeve 710, so that the sliding block 64 extends out of the fixed tube 62. At the same time, the electric telescopic rod 57 operates in the reverse direction. The movable column 52 moves upward, so that the top of the sliding block 64 is against the inner wall of the first slot 41, driving the weight 4 to move upward. After moving to the highest point, the telescopic arm 56 drives the material-taking mechanism 6 to rotate with the sliding column 52 as the center, and the limit column 55 slides in the horizontal groove 542, and then enters another straight groove 541 to slide again, so that the material-taking mechanism 6 drives the weight 4 to move to another smart car and move downward. When placing the weight 4, after the weight 4 contacts the base 2, the first sliding sleeve 77 is pressed again, causing the movable block 71 to move downward, the sliding block 64 is reset and separated from the first slot 41, and the electric telescopic rod 57 operates in the opposite direction again, causing the sliding column 52 to move upward and reset, and the weight 4 is left on the other smart car. The subsequent steps of moving the weight 4 are similar.

[0046] In this embodiment, the angles of horizontal rotation and reset of the telescopic arm 56 are fixed, and the electric telescopic rod 57 is used in conjunction with the pressure sensor at the bottom of the first sliding sleeve 77. When starting work, the control center starts the electric telescopic rod 57, so that the material-retrieving mechanism 6 moves vertically downward into the first card slot 41 of the uppermost weight 4. After the sliding block 64 is extended, the pressure sensor at the bottom of the first sliding sleeve 77 transmits information to the control center of the smart car, causing the electric telescopic rod 57 to operate in the opposite direction. After the sliding column 52 drives the material-retrieving mechanism 6 and the weight 4 to move to the highest point, the sliding column 52 rotates to drive the material-retrieving mechanism 6 and the weight 4 to another smart car. At the same time, the telescopic arm 56 automatically extends, and the electric telescopic rod 57 continues to operate in this direction to enable the sliding column 52 to drive the material-retrieving mechanism 6 moves down, the bottom of the first sliding sleeve 77 is squeezed again, so that when the movable block 71 pushes the sliding block 64 to retract the fixed tube 62, the pressure sensor again makes the electric telescopic rod 57 operate in the opposite direction, and the sliding column 52 drives the material-retrieving mechanism 6 to reset, and the weight 4 is placed in the other intelligent trolley. According to the height of the taken weight 4, when the first sliding sleeve 77 cannot touch the bottom of the first card slot 41, the sliding column 52 will continue to move down until it contacts the bottom of the first card slot 41, thereby triggering the pressure sensor. After the material-retrieving mechanism 6 moves the weight 4 to the other intelligent trolley, the two intelligent trolleys are in a loaded state. The two intelligent trolleys are used in coordination to gradually change their respective load weights, and the load tests of different weights can be performed on the two elevators respectively, thereby improving the detection efficiency.

[0047] like Figure 3-Figure 6 As shown, the control mechanism 5 also includes a fixed frame 51 that passes through the top of the vehicle body 1 and is fixedly connected to the vehicle body 1. A fixed rod 50 is fixedly connected to the inner wall of the top of the fixed frame 51. A bevel gear column 53 is fixedly connected to the top of the sliding column 52. A bevel gear plate 58 is fixedly connected to the side of the electric telescopic rod 57 close to the sliding column 52. The bevel gear plate 58 meshes with the bevel gear column 53. A telescopic arm 56 is fixedly connected to the lower end of the sliding column 52. The bevel gear column 53 is hollow. The fixed rod 50 rotates and is slidably connected to the inside of the bevel gear column 53. The electric telescopic rod 57 slides through the fixed frame 51. The sliding column 52 rotates and slides through the bottom of the fixed frame 51. A U-shaped limiting groove 54 is opened on the outer wall of the sliding column 52. The U-shaped limiting groove 54 includes two straight grooves 541 and a horizontal groove 542. A limiting column 55 is fixedly connected to one side of the lower end of the fixed frame 51. The end of the limiting column 55 away from the fixed frame 51 is slidably connected to the U-shaped limiting groove 54.

[0048] In this embodiment, in the initial state, the limit column 55 is located at the connection between the straight groove 541 and the horizontal groove 542. When the electric telescopic rod 57 is started, the operation direction of the electric telescopic rod 57 causes the bevel gear column 53 meshing with the bevel gear plate 58 to move downward, and the limit column 55 moves away from the horizontal groove 542 and enters the straight groove 541. The top of the straight groove 541 gradually approaches the limit column 55. When the sliding block 64 is extended, the electric telescopic rod 57 operates in the reverse direction, and the material taking mechanism 6 lifts the weight 4 and moves it upward. When it rises to the highest point, the limit column 55 is located at the connection between the straight groove 541 and the horizontal groove 542. The electric telescopic rod 57 continues to operate in the current direction to rotate the bevel gear column 53, and the limit column 55 slides in the horizontal groove 542, driving the weight 4 to rotate horizontally at the highest point. When the limit column 55 rotates, it comes to the connection between the horizontal groove 542 and another straight groove 541 and begins to enter the straight groove 541. The sliding column 52 starts to move down again. When the weight 4 is placed on the limit seat 3 of another smart car, the sliding column 52 can continue to move down. The sliding block 64 is separated from the side wall of the first slot 41, and the pressure sensor at the bottom of the first sliding sleeve 77 is squeezed and triggered again, causing the sliding block 64 to retract, and the electric telescopic rod 57 operates in the reverse direction. The sliding column 52 drives the material-retrieving mechanism 6 to move up, and the weight 4 remains on the other smart car. The horizontal groove 542 determines the rotatable angle of the telescopic arm 56, and the straight groove 541 determines the vertical movement range of the sliding column 52. When the limit column 55 is located in the horizontal groove 542, the material-retrieving mechanism 6 is at the highest point, and the bevel plate 58 and the bevel gear The lower end of the column 53 is engaged. When the limiting column 55 is located at the end of the straight groove 541 away from the horizontal groove 542, the picking mechanism 6 is located at the lowest point. The bevel tooth plate 58 is engaged with the upper end of the bevel gear column 53. When the limiting column 55 moves in the straight groove 541, the picking mechanism 6 also moves vertically. The horizontal rotation and vertical translation of the picking mechanism 6 can be realized without changing the moving direction of the electric telescopic rod 57. The fixing rod 50 is always located inside the bevel gear column 53 to ensure the stability of the bevel gear column 53 during the up and down vertical movement.

[0049] like Figure 6-Figure 9As shown, the material taking mechanism 6 also includes a connecting column 61 fixedly connected to one end of the telescopic arm 56 away from the sliding column 52, the bottom of the connecting column 61 is fixedly connected to the fixed tube 62, and the side wall of the fixed tube 62 is provided with a second slot 63, and the sliding block 64 passes through the second slot 63 and is slidably connected thereto, the number of the second slots 63 corresponds to the number of the sliding blocks 64, and the end of the sliding block 64 close to the central axis of the fixed tube 62 is set as an inclined surface and abuts against the movable block 71; the two sides of the end of the sliding block 64 close to the movable block 71 are respectively fixedly connected with a fixed plate 712, and the side of the fixed plate 712 close to the inner wall of the fixed tube 62 is fixedly connected with a second spring 713, and the end of the second spring 713 away from the fixed plate 712 is fixedly connected to the inner wall of the fixed tube 62, and the movable block 71 is set as a round table with a narrow top and a wide bottom, and the movable block 71 cooperates with the sliding block 64; a limited seat 3 is fixedly installed on the top of the base 2, and the limited seat 3 cooperates with the weight 4, and the first slot 41 is set as a convex circular groove.

[0050] When the first engaging groove 74 is in the state of being pressed against the first engaging groove 41, the first engaging groove 41 is pressed against the second engaging groove 41, and the second engaging groove 41 is pressed against the second engaging groove 41. After the sliding block 64 is extended, the pressure sensor at the bottom of the first sliding sleeve 77 is triggered, so that the electric telescopic rod 57 operates in the reverse direction. The sliding column 52 drives the material-retrieving mechanism 6 to move upward, which makes the top of the extended sliding block 64 abut against the inner wall of the first slot 41, making it impossible to take it out of the first slot 41, thereby lifting the weight 4 and realizing the movement of the weight 4. After the weight 4 is lifted to the highest point, the sliding column 52 begins to drive the weight 4 to rotate horizontally, and then moves vertically downward. After the weight 4 is placed on the limit seat 3 of another intelligent trolley, the movable block 71 moves downward, and the sliding block 64 is reset under the action of the second spring 713, and returns to the initial position again, and is separated from the side wall of the first slot 41. The pressure sensor is triggered again, so that the material-retrieving mechanism 6 is separated from the weight 4, and the weight 4 is left on the intelligent trolley. The sliding column 52 drives the material-retrieving mechanism 6 to move upward, and the weight 4 is placed on the limit seat 3 to avoid displacement of the weight 4 during the movement of the intelligent trolley.

[0051] like Figure 7-Figure 13As shown, the adjustment mechanism 7 also includes a first spring 72 fixedly connected to the top of the inner wall of the fixed tube 62, one end of the first spring 72 away from the fixed tube 62 is fixedly connected to the top of the movable block 71, the bottom of the fixed tube 62 is fixedly connected to a connecting tube 73, the bottom of the connecting tube 73 is slidably connected to a first sliding sleeve 77, the first sliding sleeve 77 runs through the bottom of the connecting tube 73, the upper end of the first sliding sleeve 77 is slidably sleeved with a second sliding sleeve 710, a group of first limiting blocks 74 are fixedly connected to the inner wall of the connecting tube 73, second limiting blocks 75 and third card grooves 76 are alternately arranged between adjacent first limiting blocks 74, the first limiting blocks 74 and the second limiting blocks 75 are both fixedly connected to the inner wall of the connecting tube 73, the top of the first sliding sleeve 77 is fixedly connected with teeth 79, the first A clamping block 78 is fixedly connected to the outer wall of the sliding sleeve 77, a third limit block 711 is fixedly connected to the outer wall of the upper end of the second sliding sleeve 710, and a pressure sensor is arranged at the bottom of the first sliding sleeve 77; the upper end of the first limit block 74, the upper end of the second limit block 75 and the lower end of the third limit block 711 are all provided with tips, the tip of the second limit block 75 and the tip of the first limit block 74 are arranged in the same direction, and the upper end of the tip of the second limit block 75 cooperates with the lower end of the tip of the first limit block 74, the tip of the first limit block 74 and the tip of the second limit block 75 both cooperate with the tip of the third limit block 711, and the thickness of the first limit block 74 is greater than that of the second limit block 75; the number of the third limit blocks 711 corresponds to the number of the third card slots 76, and the clamping block 78 is slidably connected to the third card slot 76.

[0052] In this embodiment, the bottom of the first sliding sleeve 77 abuts against the bottom of the first slot 41 of the weight 4, and the sliding column 52 continues to move downward to push the first sliding sleeve 77 upward, and the block 78 and the third limit block 711 both slide upward in the third slot 76, and the teeth 79 push the third limit block 711 to make the second sliding sleeve 710 move upward. When the lowest end horizontal height at the tip of the third limit block 711 is higher than the highest end horizontal height at the tip of the first limit block 74, the third limit block 711 will rotate to a certain extent under the inclined guidance at the tip of the first limit block 74, and engage with the tip of the second limit block 75, so that the third limit block 711 is limited, and the movable block 71 is also limited, the sliding block 64 extends out of the fixed tube 62, and the first sliding sleeve 7 7, the pressure sensor at the bottom is triggered, so that the sliding column 52 drives the weight 4 to move. After the weight 4 is moved to another smart car and placed on it, the sliding column 52 continues to move downward and squeezes the bottom of the first sliding sleeve 77 again. The teeth 79 first push the third limit block 711 to move upward. When the third limit block 711 rotates a certain angle together with the second sliding sleeve 710, the upward movement of the sliding column 52 will cause the third limit block 711 to enter the third slot 76. The third limit block 711 loses the supporting force at the bottom, and the first spring 72 pushes the movable block 71 to move downward and reset. The third limit block 711 slides downward in the third slot 76, so the sliding block 64 is reset and retracts into the fixed tube 62. The pressure sensor is triggered again, and the sliding column 52 can drive the material picking mechanism 6 to move upward alone.

[0053] In this embodiment, if Fig.11 and Fig.12 As shown, the second limiting block 75 and the third clamping slot 76 are separated by the first limiting block 74 , and the clamping block 78 does not contact the second limiting block 75 when overlapping with the second limiting block 75 .

[0054] Example 2: Figure 2-Figure 13As shown, on the basis of Example 1, for the situation where there is only one or two elevators in the building, one elevator is usually closed during the inspection. The effect of using two smart cars together is not great, and the movement may be affected by the large size of the two smart cars. Therefore, the remote-controlled smart car of the present application can also be used alone according to actual conditions, without the need to be connected and paired with another smart car. The operator can set a platform with the same height as the limit seat 3 in advance (for example, a bench with the same height as the limit seat 3), so that the smart car can be used in conjunction with it. Through the same working steps as in Example 1, the weights 4 on the top layer of the smart car are taken, and the removed weights 4 are fixedly placed on the platform without manual handling. After the smart car completes a load braking test and exits the elevator, the smart car is remotely controlled to park at the corresponding fixed position. The number of weights 4 removed is selected according to the test requirements, and the removed weights 4 are stacked in order at the fixed position. Therefore, the load weight of the smart car changes, and the elevator can be entered again for braking test. After the test is completed, the weights 4 on the platform are remotely controlled to be moved to the smart car again.

[0055] Working principle: When in use, first control the connection between the rear ends of the two smart cars, fix the wheels and then start the electric telescopic rod 57, the sliding column 52 moves downward to make the limit column 55 slide in the straight groove 541, so that the bevel gear column 53 meshing with the bevel gear plate 58 moves vertically downward, the sliding column 52 drives the material picking mechanism 6 to move downward, the bottom of the first sliding sleeve 77 is against the bottom of the first slot 41 of the weight 4, when the sliding column 52 continues to move downward, the first sliding sleeve 77 is squeezed, so that the movable block 71 moves upward and fixed under the push, so that the sliding block 64 extends out of the fixed tube 62, triggering the pressure sensor, so that the electric telescopic rod 57 operates in the opposite direction, when the sliding column 52 moves upward, the top of the sliding block 64 will be engaged with the first slot 41, and it cannot be separated from the weight 4 when moving upward, so it drives the weight 4 to move, and when it moves to the highest point, the telescopic arm 56 rotates, driving the weight 4 to enter another smart car and move vertically downward, and place it on the smart car The third limit block 711 slides down in the third slot 76 under the thrust of the first spring 72 and its own gravity, and the upper end of the movable block 71 is again against the sliding block 64, and the sliding block 64 is reset and separated from the weight 4. The pressure sensor triggers the electric telescopic rod 57 to operate in the reverse direction again, and the sliding column 52 is reset. The two smart cars can be used in conjunction with each other, or one smart car can be used alone. The load weight of the smart car can be flexibly changed without manual handling. In the case where both smart cars are loaded, the two smart cars can enter the elevator separately after connection and separation, and the two elevators can be tested at the same time, and the braking test of different load weights can be completed quickly for the two elevators.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A remote-controlled elevator load brake test device, comprising an intelligent trolley and a trolley body (1), wherein a base (2) is fixedly mounted at the bottom of the trolley body (1), a control mechanism (5) is arranged inside the trolley body (1), the control mechanism (5) comprises an electric telescopic rod (57) arranged parallel to the top of the trolley body (1), the control mechanism (5) is fixedly connected to a material taking mechanism (6), the material taking mechanism (6) comprises a fixing pipe (62), and is characterized in that: An adjustment mechanism (7) is arranged inside the fixed tube (62); A control mechanism (5) is configured to control the extension and retraction of the electric telescopic rod (57) so as to move a sliding column (52) vertically arranged and matched with the electric telescopic rod (57), thereby moving the material taking mechanism (6); The material taking mechanism (6) is configured to enter a first slot (41) provided at the top of a weight (4) placed at the top of the base (2) under the drive of the control mechanism (5); when a sliding block (64) slidably connected to the side wall of the fixed tube (62) abuts against the first slot (41), the weight (4) is driven to move under the action of the control mechanism (5); The adjusting mechanism (7) is configured to move the first sliding sleeve (77) slidably connected to the bottom of the fixed tube (62) upward through the downward movement of the fixed tube (62), thereby pushing the movable block (71) abutting against the sliding block (64) upward, so that the sliding block (64) extends out of the fixed tube (62).

2. The remote-controlled elevator load brake test device according to claim 1, characterized in that: The control mechanism (5) further comprises a fixing frame (51) which passes through the top of the vehicle body (1) and is fixedly connected to the vehicle body (1); a fixing rod (50) is fixedly connected to the inner wall of the top of the fixing frame (51); a bevel gear column (53) is fixedly connected to the top of the sliding column (52); a bevel tooth plate (58) is fixedly connected to the side of the electric telescopic rod (57) close to the sliding column (52); the bevel tooth plate (58) is meshed with the bevel gear column (53); a telescopic arm (56) is fixedly connected to the lower end of the sliding column (52); the bevel gear column (53) is hollow; the fixing rod (50) is rotatably and slidably connected to the inside of the bevel gear column (53); the electric telescopic rod (57) slidably passes through the fixing frame (51); and the sliding column (52) is rotatably and slidably passed through the bottom of the fixing frame (51).

3. The remote-controlled elevator load brake test device according to claim 2, characterized in that: The outer wall of the sliding column (52) is provided with a U-shaped limiting groove (54), and the U-shaped limiting groove (54) includes two straight grooves (541) and a horizontal groove (542). One side of the lower end of the fixing frame (51) is fixedly connected to a limiting column (55), and one end of the limiting column (55) away from the fixing frame (51) is slidably connected to the U-shaped limiting groove (54).

4. The remote-controlled elevator load brake test device according to claim 3, characterized in that: The material taking mechanism (6) further comprises a connecting column (61) fixedly connected to one end of the telescopic arm (56) away from the sliding column (52); the bottom of the connecting column (61) is fixedly connected to the fixed tube (62); a second slot (63) is provided on the side wall of the fixed tube (62); the sliding block (64) passes through the second slot (63) and is slidably connected thereto; the number of the second slots (63) corresponds to the number of the sliding blocks (64); the end of the sliding block (64) close to the central axis of the fixed tube (62) is arranged as an inclined surface and abuts against the movable block (71).

5. The remote-controlled elevator load brake test device according to claim 1, characterized in that: The adjusting mechanism (7) further comprises a first spring (72) fixedly connected to the top of the inner wall of the fixed tube (62); one end of the first spring (72) away from the fixed tube (62) is fixedly connected to the top of the movable block (71); the bottom of the fixed tube (62) is fixedly connected to a connecting tube (73); the bottom of the connecting tube (73) is slidably connected to a first sliding sleeve (77); the first sliding sleeve (77) passes through the bottom of the connecting tube (73); a second sliding sleeve (710) is slidably sleeved inside the upper end of the first sliding sleeve (77); the inner wall of the connecting tube (73) is fixedly connected to A group of first limit blocks (74) are connected, and second limit blocks (75) and third clamping grooves (76) are alternately arranged between adjacent first limit blocks (74). The first limit blocks (74) and the second limit blocks (75) are both fixedly connected to the inner wall of the connecting tube (73). The top of the first sliding sleeve (77) is fixedly connected with teeth (79), the outer wall of the first sliding sleeve (77) is fixedly connected with a clamping block (78), the upper outer wall of the second sliding sleeve (710) is fixedly connected with a third limit block (711), and the bottom of the first sliding sleeve (77) is provided with a pressure sensor.

6. The remote-controlled elevator load brake test device according to claim 5, characterized in that: The upper end of the first limit block (74), the upper end of the second limit block (75) and the lower end of the third limit block (711) are all provided with a tip; the tip of the second limit block (75) and the tip of the first limit block (74) are arranged in the same direction, and the upper end of the tip of the second limit block (75) matches with the lower end of the tip of the first limit block (74); the tip of the first limit block (74) and the tip of the second limit block (75) both match with the tip of the third limit block (711); and the thickness of the first limit block (74) is greater than that of the second limit block (75).

7. The remote-controlled elevator load brake test device according to claim 6, characterized in that: The number of the third limiting blocks (711) corresponds to the number of the third clamping slots (76), and the clamping blocks (78) are slidably connected to the third clamping slots (76).

8. The remote-controlled elevator load brake test device according to claim 7, characterized in that: The sliding block (64) is fixedly connected to a fixed plate (712) on both sides of one end close to the movable block (71), and a second spring (713) is fixedly connected to one side of the fixed plate (712) close to the inner wall of the fixed tube (62). The second spring (713) is fixedly connected to the inner wall of the fixed tube (62) at one end away from the fixed plate (712). The movable block (71) is configured as a round table with a narrow top and a wide bottom. The movable block (71) cooperates with the sliding block (64).

9. The remote-controlled elevator load brake test device according to claim 1, characterized in that: A limit seat (3) is fixedly mounted on the top of the base (2), the limit seat (3) cooperates with the weight (4), and the first clamping groove (41) is arranged as a convex circular groove.

10. A method for using a remote-controlled elevator load brake test device, characterized in that: Here are the steps: S1: remotely control two identical smart cars to automatically approach each other so that their rear ends are aligned and connected, and brake and fix the wheels of the smart cars. One of the smart cars is not equipped with a control mechanism (5), a material-retrieving mechanism (6) and an adjustment mechanism (7). A set of identical weights (4) is placed in advance on the smart car equipped with the material-retrieving mechanism (6). After the rear ends of the two smart cars are connected, the electric telescopic rod (57) is started, so that the sliding column (52) drives the material-retrieving mechanism (6) to move vertically downward into the first card slot (41); S2: When the bottom of the first sliding sleeve (77) contacts the bottom of the first slot (41), the first sliding sleeve (77) moves upward to drive the movable block (71) to move upward until the position of the movable block (71) is limited. During this process, the sliding block (64) moves outward of the fixed tube (62) under the push of the movable block (71); S3: The electric telescopic rod (57) operates in the reverse direction, the sliding column (52) moves up to the highest point and then rotates horizontally, driving the weight (4) engaged with the material taking mechanism (6) to come to another smart car and then move vertically downward. When placing, the first sliding sleeve (77) is pushed upward again, so that the movable block (71) moves downward, and the sliding block (64) moves into the fixed tube (62) and separates from the side wall of the first slot (41), so that the weight (4) is placed in another smart car; S4: The electric telescopic rod (57) operates in the reverse direction again to return to the initial position, and the number of weights (4) loaded on the smart car is gradually changed according to the test requirements. The two smart cars can be remotely controlled to enter different elevators respectively, and the test can be started after the wheels are fixed.

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