Device for continuously applying and testing self-closing force of elevator landing door

Abstract

The invention discloses an elevator landing door self-closing force continuous application testing device, and relates to the technical field of self-closing force testing, the elevator landing door self-closing force continuous application testing device comprises a testboard base, and the top of the testboard base is provided with a middle driving module, two side supporting frames and four door body clamping structures; pressure control structures are installed on the top of the middle driving module and the tops of the two side supporting frames correspondingly, the two door body clamping structures are connected with the two pressure control structures installed on the tops of the two side supporting frames correspondingly, and the other two door body clamping structures are connected with the pressure control structure installed on the top of the middle driving module. The door body displacement sensor monitors the movement speed of the elevator landing door, judges whether the elevator landing door moves at a constant speed or not, and controls the pressure control structure to work, so that the negative pressure value applied to the second piston from the interior of the piston cylinder is changed according to needs, and the elevator landing door is subjected to limiting tension of different magnitudes; and the self-closing force applying control effect of the elevator landing door and the stability of the real-time force value of the self-closing force are detected.

Description

Technical Field

[0001] This invention relates to the field of self-closing force testing technology, specifically a device for continuously applying self-closing force testing of elevator landing doors. Background Technology

[0002] The elevator landing door self-closing force continuous application test device is a professional device that can accurately apply and monitor force values ​​under multiple working conditions. It is mainly used to test the stability, control sensitivity and self-locking performance of elevator landing door self-closing force.

[0003] Existing elevator landing door self-closing force testing devices cannot achieve continuous and accurate force application and monitoring, cannot effectively verify the stability of self-closing force application under different limit tensions, can only test the elevator landing door self-closing force separately, and cannot simulate the scenario where there are obstacles in the elevator landing door self-closing path. They cannot verify the sensitivity and stability of self-closing force control under this working condition, nor can they detect the force on the obstacles.

[0004] For example, the invention disclosed in patent publication number CN 117623069A discloses an elevator landing door self-closing device with an abnormal operation detection function, which includes: a door head assembly, a counterweight guide groove, a counterweight, and a counterweight wire rope. The counterweight guide groove is installed on a door panel, and the counterweight is slidably disposed in the counterweight guide groove and can move up and down in the counterweight guide groove. The feature is that it also includes a tension sensor installed in the door head assembly, and one end of the counterweight wire rope is connected to the tension sensor.

[0005] Taking the elevator landing door self-closing device with the above-mentioned detection function as an example, it can only mechanically test the self-closing force of the elevator landing door. It is difficult to simulate the scenario where there are obstacles in the self-closing path of the elevator landing door, and it cannot verify the sensitivity and stability of the self-closing force control under this working condition. Summary of the Invention

[0006] The purpose of this invention is to provide a test device for continuously applying the self-closing force of elevator landing doors, so as to solve the problems mentioned in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a test device for continuously applying self-closing force of elevator landing doors, comprising a test platform base, a central drive module, two side support frames, and four door clamping structures disposed on the top of the test platform base, a pressure control structure installed on the top of the central drive module and the two side support frames, wherein two of the door clamping structures are respectively connected to two pressure control structures installed on the top of the two side support frames, and the remaining two door clamping structures are connected to the pressure control structure installed on the top of the central drive module, the pressure control structure comprising an air storage cylinder and a piston cylinder, a pressure control component disposed between the air storage cylinder and the piston cylinder, and a door clamping structure comprising a piston II disposed inside the piston cylinder, two force transmission rods fixedly connected to one side of the piston II, and a clamping connecting frame fixedly connected between the two force transmission rods, and a clamping component disposed between the clamping connecting frame and the adjacent piston cylinder.

[0008] Preferably, a door displacement sensor is fixedly installed on the top of the door clamping structure mounted on the top of the side support frame, and a sound sensor is fixedly installed on the side of the test bench base away from the central drive module. An elevator landing door test sample is arranged between the two side support frames.

[0009] Preferably, the central drive module includes a mounting frame fixedly connected to the top of the test bench base. A drive screw and two guide shafts are rotatably mounted on the mounting frame. A brake and a gearbox are fixedly connected to both sides of the mounting frame, respectively. One end of the drive screw extends into the brake, and the other end of the drive screw is fixedly connected to the output end of the gearbox. A motor mounting base is fixedly mounted on the outside of the mounting frame, and a drive motor is fixedly mounted on the motor mounting base. The output end of the drive motor is fixedly connected to the input end of the gearbox.

[0010] Preferably, a lead screw slide is threaded onto the outer side of the drive lead screw, the guide optical shaft passes through the lead screw slide, multiple slide support arms are fixedly connected to the bottom of the lead screw slide, support rollers are rotatably mounted on the slide support arms, the support rollers abut against the bottom of the inner cavity of the mounting frame, a dual-axis hydraulic cylinder II is fixedly mounted at the bottom of the lead screw slide, friction plates I are fixedly connected to both output ends of the dual-axis hydraulic cylinder II, and friction plates II are fixedly mounted on both sides inside the mounting frame.

[0011] Preferably, the top of the lead screw slide is provided with an upper platform, and the bottom of the upper platform has two storage cavities. One of the storage cavities is provided with a pneumatic cylinder, the outer wall of which is fixedly connected to the lead screw slide, and the piston end of which is fixedly connected to the upper platform. The other storage cavity is provided with a guide slide seat, which is fixedly connected to the upper platform. A guide bend rod passes through the guide slide seat and is fixedly connected to the lead screw slide.

[0012] Preferably, the three gas storage cylinders are respectively fixedly installed on the top of the upper platform and the top of the two side support frames. Two cylinder body fixing brackets are fixedly installed on the outside of the piston cylinder. Multiple cylinder body fixing brackets are respectively fixedly installed on the upper platform and the two side support frames. A piston is provided on the side of the gas storage cylinder away from the piston cylinder. A solenoid valve is fixedly installed on the outside of the piston. A hydraulic cylinder is provided on the side of the piston that is away from the piston cylinder. The hydraulic cylinder is fixedly inserted through one side of the gas storage cylinder. The piston end of the hydraulic cylinder is fixedly connected to the piston. A pressure sensor is fixedly installed on the top of the gas storage cylinder.

[0013] Preferably, the pressure control component includes a solenoid valve three fixedly connected to the side of the gas storage cylinder near the piston cylinder, a gas guide pipe three fixedly connected to one end of the solenoid valve three, a pressure sensor two fixedly installed on the outside of the gas guide pipe three, a gas guide pipe four fixedly connected to one end of the gas guide pipe three, the gas guide pipe four fixedly installed inside the piston cylinder, and a plurality of limiting rods provided on the side of the piston two near the gas guide pipe four, the limiting rods being fixedly connected to the gas guide pipe four.

[0014] Preferably, an air pump is fixedly installed on the top of the air storage cylinder, an air guide pipe is fixedly connected between the air pump inlet and the air storage cylinder, an air guide pipe is fixedly connected to the air pump outlet, and a solenoid valve is fixedly connected between the bottom end of the air guide pipe and the air storage cylinder. The air guide pipe and the solenoid valve are respectively located on both sides of the piston.

[0015] Preferably, the clamping assembly includes a dual-axis hydraulic cylinder, which is slidably mounted on the top of an adjacent cylinder body fixing bracket. Both output ends of the dual-axis hydraulic cylinder are fixedly connected to a clamping transmission frame. Door clamping plates are provided on both sides inside the clamping connection frame. Multiple clamping adjustment rods are fixedly connected between the clamping transmission frame and the adjacent door clamping plates. The clamping adjustment rods pass through the clamping connection frame, and the force transmission rod passes through the piston cylinder.

[0016] Preferably, two obstacle mounting brackets are provided on one side of the door clamping structure installed on the top of the central drive module. The obstacle mounting brackets are fixedly installed on the outside of the clamping adjustment rod away from the central drive module, and pressure detection elements are fixedly inserted on the obstacle mounting brackets.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. When this application is used, the real-time force value of the self-closing force during the self-closing process of the elevator landing door can be calculated based on the detection result of the second air pressure sensor. When the elevator landing door moves to the limit of the movement of the first dual-axis hydraulic cylinder, the first dual-axis hydraulic cylinder retracts to make the door clamping plate move away from the elevator landing door. The door displacement sensor monitors the movement speed of the elevator landing door and determines whether the movement of the elevator landing door is uniform. By controlling the operation of the pressure control structure, the negative pressure value applied to the second piston inside the piston cylinder is changed as needed, so that the elevator landing door is subjected to different magnitudes of limiting tension. The self-closing force application control effect and the stability of the real-time force value of the self-closing force are detected. The self-closing force trigger application can be stably triggered when the elevator landing door is subjected to different tensions.

[0018] 2. In use, the drive motor in the middle drive module rotates forward or reverse, causing the lead screw slide to move forward or backward, and the upper platform to move forward or backward. This controls the pneumatic cylinder to extend or retract, causing the upper platform to move left or right. This activates the pressure control structure and door clamping structure installed on the upper platform, allowing the pressure detection device to move between the two elevator doors. The test sample of the elevator door is used to test the sensitivity and stability of the self-closing force control when there are obstacles in the elevator door's movement path during the application of self-closing force. The pressure detection device can detect the force on the obstacles during the self-closing force control of the elevator door during its braking stroke. Through the cooperation of the middle drive module and the pressure control structure and door clamping structure supported by the middle drive module, the pressure detection device moves to different positions between the two elevator doors at different times, thus testing the stability of the elevator door self-closing force control. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the side support frame of the present invention; Figure 3 This is a schematic diagram of the upper platform of the present invention; Figure 4 This is a schematic diagram of the structure of the test platform base of the present invention; Figure 5 This is a schematic diagram of the structure of the central drive module of the present invention; Figure 6 for Figure 5 Enlarged view of the structure at point A; Figure 7 This is a partial structural diagram of the mounting frame of the present invention; Figure 8 This is a cross-sectional view of the mounting frame of the present invention; Figure 9 This is a schematic diagram of the connection structure between the gas storage cylinder and the upper platform of the present invention; Figure 10This is a cross-sectional view of the gas storage cylinder of the present invention; Figure 11 This is a schematic diagram of the piston cylinder of the present invention; Figure 12 This is a cross-sectional view of the piston cylinder of the present invention; Figure 13 This is a cross-sectional view of the door clamping structure of the present invention.

[0020] Numbered components in the diagram: 1. Test bench base; 2. Side support frame; 3. Central drive module; 31. Mounting frame; 32. Guide optical axis; 33. Drive screw; 34. Brake; 35. Drive motor; 36. Motor mounting base; 37. Gearbox; 38. Screw slide; 39. Slide support arm; 310. Support roller; 311. Dual-axis hydraulic cylinder II; 312. Friction plate I; 313. Friction plate II; 314. Upper platform; 315. Storage cavity; 316. Pneumatic cylinder; 317. Guide bend rod; 318. Guide sliding seat; 4. Pressure control structure; 41. Air storage cylinder; 42. Air pump; 43. Air guide pipe I; 44. Air guide pipe II; 45. 46. ​​Solenoid Valve 1; 47. Pressure Sensor 1; 48. Piston 1; 49. Solenoid Valve 2; 40. Hydraulic Cylinder 1; 410. Solenoid Valve 3; 411. Air Guide Pipe 3; 412. Pressure Sensor 2; 413. Piston Cylinder; 414. Air Guide Pipe 4; 415. Cylinder Body Fixing Bracket; 5. Door Clamping Structure; 51. Dual-Axis Hydraulic Cylinder 1; 52. Clamping Transmission Frame; 53. Clamping Adjustment Rod; 54. Door Clamping Plate; 55. Clamping Connecting Frame; 56. Force Transmission Rod; 57. Piston 2; 58. Limiting Short Rod; 6. Door Displacement Sensor; 7. Obstacle Mounting Bracket; 8. Pressure Detection Component; 9. Elevator Landing Door Test Sample; 10. Sound Sensor. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example: Figures 1-13As shown, the present invention provides a test device for continuous application of self-closing force of elevator landing doors, including a test platform base 1. The test platform base 1 is provided with a central drive module 3, two side support frames 2 and four door clamping structures 5 on the top. Pressure control structures 4 are installed on the top of the central drive module 3 and the two side support frames 2 respectively. The two door clamping structures 5 are respectively connected to the two pressure control structures 4 installed on the top of the two side support frames 2. The other two door clamping structures 5 are connected to the pressure control structures 4 installed on the top of the central drive module 3. The pressure control structure 4 includes an air storage cylinder 41 and a piston cylinder 413. A pressure control component is provided between the air storage cylinder 41 and the piston cylinder 413. The door clamping structure 5 includes a second piston 57 provided inside the piston cylinder 413, two force transmission rods 56 fixedly connected to one side of the second piston 57, and a clamping connecting frame 55 fixedly connected between the two force transmission rods 56. A clamping component is provided between the clamping connecting frame 55 and the adjacent piston cylinder 413.

[0023] Specifically, such as Figure 1 A door body displacement sensor 6 is fixedly installed on the top of the door clamping structure 5 mounted on the side support frame 2. The door body displacement sensor 6 is used to detect the displacement speed and displacement position of the elevator landing door in the corresponding elevator landing door test sample 9. A sound sensor 10 is fixedly installed on the top of the test bench base 1 away from the middle drive module 3. The sound sensor 10 is used to detect the sound generated during the operation of the elevator landing door test sample 9. The elevator landing door test sample 9 is set between the two side support frames 2. The elevator landing door test sample 9 can be installed on the top of the test bench base 1 through the gantry frame, so that the elevator landing door test sample 9 is located between the two side support frames 2, the middle drive module 3 and the sound sensor 10.

[0024] Specifically, such as Figure 1 , Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9In the central drive module 3, the mounting frame 31 is fixedly installed on the top of the test bench base 1. A drive screw 33 and two guide shafts 32 are rotatably mounted on the mounting frame 31. A brake 34 and a gearbox 37 are fixedly connected to both sides of the mounting frame 31, respectively. One end of the drive screw 33 extends into the brake 34. By controlling the brake 34 to work, the drive screw 33 can be braked and limited. The other end of the drive screw 33 is fixedly connected to the output end of the gearbox 37. A drive motor 35 is fixedly mounted on the motor mounting base 36 on the outside of the mounting frame 31. The output end of the drive motor 35 is fixedly connected to the input end of the gearbox 37. By controlling the drive motor 35 to work, it sends rotational force to the gearbox 37. The rotational force is changed direction and speed by the gearbox 37 and then applied to the drive screw 33. The drive screw 33 rotates. The screw slide 38, which is threaded on the outside of the drive screw 33, is penetrated by the two guide shafts 32. The screw slide 38 moves horizontally along the axial direction of the two guide shafts 32 under the drive of the rotating drive screw 33.

[0025] Multiple slide support arms 39, fixedly connected to the bottom of the lead screw slide 38, are rotatably equipped with support rollers 310. The support rollers 310 abut against the bottom of the inner cavity of the mounting frame 31. The slide support arms 39 and support rollers 310 support the lead screw slide 38, reducing the movement resistance of the lead screw slide 38 and the stress on the drive screw 33, thus ensuring the service life of the drive screw 33. A dual-axis hydraulic cylinder 311 is fixedly installed at the bottom of the lead screw slide 38. Friction plates 312 are fixedly connected to both output ends of the dual-axis hydraulic cylinder 311. Friction plates 313 are fixedly installed on both sides inside the mounting frame 31. The dual-axis hydraulic cylinder 311 is controlled to work so that friction plates 312 press against friction plates 313, thereby limiting the movement of the lead screw slide 38.

[0026] The upper platform 314 at the top of the lead screw slide 38 has two storage cavities 315 at its bottom. The outer wall of the pneumatic cylinder 316 inside one of the storage cavities 315 is fixedly connected to the lead screw slide 38, and the piston end of the pneumatic cylinder 316 is fixedly connected to the upper platform 314. The guide sliding seat 318 inside the other storage cavity 315 is fixedly connected to the upper platform 314. The guide sliding seat 318 and the upper platform 314 move synchronously. The guide curved rod 317 passing through the guide sliding seat 318 is fixedly connected to the lead screw slide 38. The guide curved rod 317 supports and limits the movement of the upper platform 314. Under the action of the pneumatic cylinder 316 and the guide curved rod 317, the upper platform 314 moves horizontally in a stable manner.

[0027] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 Figure 11 and Figure 12 Three gas storage cylinders 41 are fixedly installed on the top of the upper platform 314 and the two side support frames 2 respectively. Two cylinder body fixing brackets 415 are fixedly installed on the outside of the piston cylinder 413. Multiple cylinder body fixing brackets 415 are fixedly installed on the upper platform 314 and the two side support frames 2 respectively, so that the middle drive module 3 can drive the installed pressure control structure 4 and the two door clamping structures 5 installed on the pressure control structure 4 to move horizontally.

[0028] A piston 47 is provided on the side of the gas storage cylinder 41 away from the piston cylinder 413. A pressure sensor 46 is fixedly installed on the top of the gas storage cylinder 41. The pressure sensor 46 detects the gas pressure inside the gas storage cylinder 41. The piston 47 divides the inside of the gas storage cylinder 41 into two spaces: a pressure control space connected to the solenoid valve 410 and a gas storage space connected to the solenoid valve 45. A solenoid valve 48 is fixedly installed on the outside of the piston 47 to connect the two spaces. A hydraulic cylinder 49 is provided on the side of the piston 47 away from the piston cylinder 413. The hydraulic cylinder 49 is fixedly inserted through one side of the gas storage cylinder 41. The piston end of the hydraulic cylinder 49 is fixedly connected to the piston 47. Controlling the operation of the hydraulic cylinder 49 controls the position of the piston 47 inside the gas storage cylinder 41.

[0029] In the pressure control assembly, solenoid valve 3 410 is fixedly installed on the side of the gas storage cylinder 41 near the piston cylinder 413. A pressure sensor 2 412 is fixedly installed on the outside of the gas guide pipe 3 411, which is fixedly connected to one end of solenoid valve 3 410. The pressure sensor 2 412 detects the gas pressure inside the gas guide pipe 3 411. A gas guide pipe 414, which is fixedly connected to one end of the gas guide pipe 3 411, is fixedly installed inside the piston cylinder 413. Gas inside the gas storage cylinder 41 can be controlled by an electric current... The solenoid valve 3 410, the air guide pipe 3 411, and the air guide pipe 414 enter the piston cylinder 413. The piston 2 57 is provided with multiple limiting rods 58 on the side near the air guide pipe 414. The limiting rods 58 are fixedly connected to the air guide pipe 414. The piston 2 57 is supported and limited by the multiple limiting rods 58. The piston 2 57 cannot contact the air guide pipe 414, causing the air guide pipe 414 to be blocked, thus ensuring the smooth exhaust of the air guide pipe 414.

[0030] An air pump 42, which is fixedly installed on the top of the air storage cylinder 41, is fixedly connected to the air inlet end of the air pump 42 and the air storage cylinder 41 by a first air guide pipe 43. An air guide pipe 44 is fixedly connected to the air outlet end of the air pump 42. A solenoid valve 45 is fixedly connected to the bottom end of the second air guide pipe 44 and the air storage cylinder 41. The first air guide pipe 43 and the solenoid valve 45 are respectively located on both sides of the piston 47. When the air pump 42 works, it delivers the gas inside the air storage cylinder 41 to the space between the piston 47 and the hydraulic cylinder 49. The second solenoid valve 48 is controlled to open, and the gas inside the air storage cylinder 41 flows automatically. The air pump 42 and the second solenoid valve 48 cooperate to move the gas inside the air storage cylinder 41 on both sides of the piston 47.

[0031] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 12 and Figure 13 In the clamping assembly, the dual-axis hydraulic cylinder 51 is slidably mounted on the top of the adjacent cylinder fixing bracket 415. The dual-axis hydraulic cylinder 51 can perform limited movement. Both output ends of the dual-axis hydraulic cylinder 51 are fixedly connected to the clamping transmission frame 52. Door clamping plates 54 are provided on both sides inside the clamping connecting frame 55. Multiple clamping adjustment rods 53 are fixedly connected between the clamping transmission frame 52 and the adjacent door clamping plate 54. By controlling the operation of the dual-axis hydraulic cylinder 51, the two clamps can be used to clamp the door. The transmission frame 52 and multiple clamping adjustment rods 53 adjust the position of the two door clamping plates 54 inside the clamping connecting frame 55. The two door clamping plates 54 move to clamp the outside of the elevator landing door in the elevator landing door test sample 9. The clamping adjustment rods 53 are inserted through the clamping connecting frame 55. The multiple clamping adjustment rods 53 make the door clamping plates 54 move horizontally. The force transmission rod 56 is inserted through the piston cylinder 413. The force transmission rod 56 drives the piston 57 to move inside the piston cylinder 413.

[0032] Two obstacle mounting brackets 7 are provided on one side of the door clamping structure 5 installed on the top of the central drive module 3. The obstacle mounting brackets 7 are fixedly installed on the outside of the clamping adjustment rod 53 away from the central drive module 3. A pressure detection element 8 is fixedly inserted on the obstacle mounting bracket 7. The position of the pressure detection element 8 is controlled by the central drive module 3, the pressure control structure 4 and the corresponding door clamping structure 5.

[0033] This application describes a testing device that continuously applies the self-closing force to an elevator landing door test sample 9, comprising a test bench base 1, a side support frame 2, a central drive module 3, a pressure control structure 4, a door clamping structure 5, a door displacement sensor 6, an obstacle mounting bracket 7, and a pressure detection component 8. The working principle of the testing device is as follows: The elevator landing door test specimen 9 is controlled to operate. The two elevator landing doors of the test specimen 9 move to opposite sides of the two side support frames 2. Then, the door clamping structure 5 installed on the side support frames 2 is activated. The dual-axis hydraulic cylinder 51 in the door clamping structure 5 operates, causing the two door clamping plates 54 to clamp the elevator landing doors to both sides. Both side support frames 2 now clamp adjacent elevator landing doors. The pressure control structure 4 connected to the door clamping structure 5 that clamps the elevator landing doors is activated. The air pump 42 in the pressure control structure 4 draws gas from the pressure control space and delivers it to the gas storage space. As the internal air pressure decreases, the air pressure inside the space between piston 57 and clamping bracket 55 in the air guide pipe 411 and piston cylinder 413 also decreases. At this time, the negative pressure suction force on piston 57 increases. Air pressure sensor 46 detects the air pressure value inside the pressure control space. When the air pressure value detected by air pressure sensor 46 reaches the preset value, air pump 42 stops working, solenoid valve 410 closes, and piston cylinder 413 applies a preset suction force to piston 57. Subsequently, elevator landing door test sample 9 operates, and the two elevator landing doors are subjected to a preset self-closing force. During this process, air pressure sensor 412 monitors the piston cylinder... The internal air pressure value of 413 is monitored by the door displacement sensor 6, which monitors the displacement distance of the elevator landing door. The dual-axis hydraulic cylinder 51 can also move the door a certain distance. When the self-closing force on the elevator landing door in the elevator landing door test sample 9 is too large or too small, the elevator landing door movement speed monitored by the door displacement sensor 6 and the internal air pressure change of the piston cylinder 413 monitored by the air pressure sensor 412 are not within the preset range. This monitors whether the self-closing force on the elevator landing door in the elevator landing door test sample 9 is applied according to the preset value. Furthermore, based on the detection results of the air pressure sensor 412, the real-time force value of the self-closing force during the self-closing process of the elevator landing door can be calculated. When the elevator landing door reaches the limit of the movement of the dual-axis hydraulic cylinder 51, the dual-axis hydraulic cylinder 51 retracts, causing the door clamping plate 54 to move away from the elevator landing door. The door displacement sensor 6 monitors the speed of the elevator landing door and determines whether the elevator landing door is moving at a uniform speed. By controlling the operation of the pressure control structure 4, the negative pressure applied to the piston 57 inside the piston cylinder 413 is changed as needed, so that the elevator landing door is subjected to different magnitudes of limiting tension. The self-closing force application control effect and the stability of the real-time force value of the self-closing force are detected. The self-closing force trigger application is tested to see if the elevator landing door can stably apply the self-closing force when subjected to different tensions.

[0034] The control solenoid valve 45 is closed, and the control solenoid valve 48 is opened, restoring the air pressure balance inside the air storage cylinder 41. Then, the control solenoid valve 48 is closed, and the control hydraulic cylinder 49 is activated. The hydraulic cylinder 49 pushes the piston 47 to move inside the air storage cylinder 41, reducing the pressure control space and increasing the air pressure inside the pressure control space. The air pressure inside the piston cylinder 413 increases, and the piston 57 is pushed by the high pressure. The piston 57 applies a thrust to the clamping connecting frame 55 through the force transmission rod 56. The force transmission rod 56 applies the thrust to the adjacent elevator landing door, so that the elevator landing door in the elevator landing door test sample 9 is subjected to external thrust during the opening process, and the stability of the elevator landing door self-locking is tested.

[0035] Additionally, the drive motor 35 in the middle drive module 3 rotates forward or reverse, causing the lead screw slide 38 to move forward or backward, and the upper platform 314 to move forward or backward. This controls the pneumatic cylinder 316 to extend or retract, causing the upper platform 314 to move left or right. This activates the pressure control structure 4 and door clamping structure 5 installed on the upper platform 314, allowing the pressure detection element 8 to move between the two elevator doors. This tests the sensitivity and stability of the self-closing force control when there are obstacles in the elevator door's movement path during the self-closing force application process of the elevator door test sample 9. The pressure detection element 8 can detect the force on the obstacles during the self-closing force control of the elevator door during the braking stroke. Through the cooperation of the middle drive module 3 and the pressure control structure 4 and door clamping structure 5 supported by the middle drive module 3, the pressure detection element 8 moves to different positions between the two elevator doors at different times, thus testing the stability of the elevator door self-closing force control.

[0036] The two door clamping structures 5 driven by the central drive module 3 move between the two elevator landing doors. Then, the two door clamping structures 5 are controlled to clamp the two elevator landing doors. The pressure control structure 4 is controlled to apply a preset pulling or pushing force to the elevator landing doors. The stability of the self-locking after the elevator landing doors close and the effectiveness of the force when opening are tested to ensure the comprehensive and efficient testing of the self-closing force of the elevator landing doors.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An elevator landing door self-closing force continuous application testing device comprising a testing bed base (1), characterized in that: The test bench base (1) is equipped with a central drive module (3), two side support frames (2), and four door clamping structures (5) on its top. Pressure control structures (4) are installed on the top of the central drive module (3) and the two side support frames (2). Two of the door clamping structures (5) are connected to the two pressure control structures (4) installed on the top of the two side support frames (2), and the other two door clamping structures (5) are connected to the pressure control structure (4) installed on the top of the central drive module (3). The control structure (4) includes a gas storage cylinder (41) and a piston cylinder (413). A pressure control component is provided between the gas storage cylinder (41) and the piston cylinder (413). The door clamping structure (5) includes a second piston (57) provided inside the piston cylinder (413), two force transmission rods (56) fixedly connected to one side of the second piston (57), and a clamping connecting frame (55) fixedly connected between the two force transmission rods (56). A clamping component is provided between the clamping connecting frame (55) and the adjacent piston cylinder (413).

2. The elevator landing door self-closing force continuous application test device according to claim 1, characterized by: A door displacement sensor (6) is fixedly installed on the top of the door clamping structure (5) installed on the top of the side support frame (2), and a sound sensor (10) is fixedly installed on the side of the test bench base (1) away from the middle drive module (3). An elevator floor door test sample (9) is set between the two side support frames (2).

3. The elevator landing door self-closing force continuous application testing device according to claim 1, characterized in that: The central drive module (3) includes a mounting frame (31) fixedly connected to the top of the test bench base (1). A drive screw (33) and two guide shafts (32) are rotatably mounted on the mounting frame (31). A brake (34) and a gearbox (37) are fixedly connected to both sides of the mounting frame (31). One end of the drive screw (33) extends into the brake (34), and the other end of the drive screw (33) is fixedly connected to the output end of the gearbox (37). A motor mounting base (36) is fixedly mounted on the outside of the mounting frame (31). A drive motor (35) is fixedly mounted on the motor mounting base (36), and the output end of the drive motor (35) is fixedly connected to the input end of the gearbox (37).

4. The elevator landing door self-closing force continuous application testing device according to claim 3, characterized in that: The drive screw (33) is threadedly mounted on the outside of a screw slide (38). The guide shaft (32) passes through the screw slide (38). Multiple slide support arms (39) are fixedly connected to the bottom of the screw slide (38). Support rollers (310) are rotatably mounted on the slide support arms (39). The support rollers (310) abut against the bottom of the inner cavity of the mounting frame (31). A dual-axis hydraulic cylinder (311) is fixedly mounted at the bottom of the screw slide (38). Friction plates (312) are fixedly connected to both output ends of the dual-axis hydraulic cylinder (311). Friction plates (313) are fixedly mounted on both sides inside the mounting frame (31).

5. The elevator landing door self-closing force continuous application testing device according to claim 4, characterized in that: The top of the lead screw slide (38) is provided with an upper platform (314), and the bottom of the upper platform (314) has two storage cavities (315). One of the storage cavities (315) is provided with a pneumatic cylinder (316). The outer wall of the pneumatic cylinder (316) is fixedly connected to the lead screw slide (38), and the piston end of the pneumatic cylinder (316) is fixedly connected to the upper platform (314). The other storage cavity (315) is provided with a guide slide seat (318). The guide slide seat (318) is fixedly connected to the upper platform (314), and a guide bent rod (317) is passed through the guide slide seat (318). The guide bent rod (317) is fixedly connected to the lead screw slide (38).

6. The elevator landing door self-closing force continuous application testing device according to claim 5, characterized in that: The three gas storage cylinders (41) are fixedly installed on the top of the upper platform (314) and the two side support frames (2). Two cylinder body fixing brackets (415) are fixedly installed on the outside of the piston cylinder (413). Multiple cylinder body fixing brackets (415) are fixedly installed on the upper platform (314) and the two side support frames (2). A piston (47) is provided on the side of the gas storage cylinder (41) away from the piston cylinder (413). A solenoid valve (48) is fixedly installed on the outside of the piston (47). A hydraulic cylinder (49) is provided on the side of the piston (47) away from the piston cylinder (413). The hydraulic cylinder (49) is fixedly inserted through one side of the gas storage cylinder (41). The piston end of the hydraulic cylinder (49) is fixedly connected to the piston (47). A pressure sensor (46) is fixedly installed on the top of the gas storage cylinder (41).

7. The elevator landing door self-closing force continuous application testing device according to claim 1, characterized in that: The pressure control assembly includes a solenoid valve three (410) fixedly connected to the side of the gas storage cylinder (41) near the piston cylinder (413). One end of the solenoid valve three (410) is fixedly connected to a gas guide pipe three (411). A pressure sensor two (412) is fixedly installed on the outside of the gas guide pipe three (411). One end of the gas guide pipe three (411) is fixedly connected to a gas guide pipe four (414). The gas guide pipe four (414) is fixedly installed inside the piston cylinder (413). A plurality of limit rods (58) are provided on the side of the piston two (57) near the gas guide pipe four (414). The limit rods (58) are fixedly connected to the gas guide pipe four (414).

8. The elevator landing door self-closing force continuous application testing device according to claim 6, characterized in that: An air pump (42) is fixedly installed on the top of the air storage cylinder (41). An air guide pipe (43) is fixedly connected between the air inlet end of the air pump (42) and the air storage cylinder (41). An air guide pipe (44) is fixedly connected to the air outlet end of the air pump (42). An electromagnetic valve (45) is fixedly connected between the bottom end of the air guide pipe (44) and the air storage cylinder (41). The air guide pipe (43) and the electromagnetic valve (45) are respectively located on both sides of the piston (47).

9. The elevator landing door self-closing force continuous application testing device according to claim 6, characterized in that: The clamping assembly includes a dual-axis hydraulic cylinder (51), which is slidably mounted on the top of an adjacent cylinder body fixing bracket (415). Both output ends of the dual-axis hydraulic cylinder (51) are fixedly connected to clamping transmission frames (52). Door clamping plates (54) are provided on both sides inside the clamping connecting frame (55). Multiple clamping adjustment rods (53) are fixedly connected between the clamping transmission frame (52) and the adjacent door clamping plates (54). The clamping adjustment rods (53) pass through the clamping connecting frame (55), and the force transmission rod (56) passes through the piston cylinder (413).

10. The elevator landing door self-closing force continuous application testing device according to claim 1, characterized in that: Two obstacle mounting brackets (7) are provided on one side of the door clamping structure (5) installed on the top of the central drive module (3). The obstacle mounting brackets (7) are fixedly installed on the outside of the clamping adjustment rod (53) away from the central drive module (3). A pressure detection element (8) is fixedly inserted on the obstacle mounting brackets (7).

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