Elevator landing door strength detection device

Abstract

The invention relates to an elevator landing door strength detection device, and belongs to the technical field of elevator detection equipment.The elevator landing door strength detection device comprises a mobile device arranged outside an elevator landing door body, and the top of the mobile device is provided with a dynamic impact mechanism used for simulating impact force of different strengths and frequencies on the elevator landing door body; and a reciprocating driving mechanism for realizing reciprocating impact driving on the elevator landing door body is arranged outside the dynamic impact mechanism. According to the elevator landing door strength detection device, the reciprocating driving mechanism drives the dynamic impact mechanism to operate, when the transmission sliding block slides in a reciprocating mode, the roller outside the transmission sliding block abuts against the back of the percussion block in a rolling mode, and when the roller rolls to the specific position of the back of the percussion block, the roller is reset under the action of the slope of the reset block. And the moving block drives the impact block to rapidly impact the elevator landing door body, so that the impact load borne by the elevator landing door body under the action of transient force can be simulated, the actual strength of the landing door can be reflected more comprehensively, and the advantage of high accuracy of a detection result is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator detection equipment, in particular to an elevator floor door strength detection device. Background Art

[0002] Elevator landing doors are safety features connecting the elevator shaft to the stairway. Their strength and safety directly impact the safe operation of the elevator. Elevator landing door strength testing, also known as elevator landing door impact testing, is a crucial step in the elevator safety inspection process. It aims to ensure the door's strength and ability to withstand external impacts.

[0003] Elevator landing doors are a crucial component of elevator safety, and their strength is directly related to passenger safety. Existing elevator landing door strength testing devices typically acquire data solely through the interaction between a pressure plate and the landing door, caused by the extension and retraction of a hydraulic cylinder. However, this single-minded approach to applying pressure is unable to simulate the diverse forces experienced by landing doors in various real-world scenarios. Consequently, test results fail to fully reflect the actual strength of landing doors, making it difficult to accurately assess the safety performance of elevator landing doors.

[0004] Therefore, there is an urgent need to improve the elevator floor door strength detection device to solve the above-mentioned problems. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides an elevator floor door strength detection device with the advantages of high accuracy of detection results. It solves the problem that in the existing elevator floor door strength detection device, data is usually obtained only by the interaction between the pressure plate and the floor door through the extension and contraction of the hydraulic cylinder, resulting in the detection results cannot fully reflect the actual strength of the floor door, making it difficult to meet the needs of accurately evaluating the safety performance of the elevator floor door.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an elevator landing door strength detection device, comprising a mobile device disposed outside the elevator landing door body, a dynamic impact mechanism disposed on the top of the mobile device for simulating impact forces of different intensities and frequencies on the elevator landing door body, and a reciprocating drive mechanism disposed on the outside of the dynamic impact mechanism for achieving reciprocating impact drive on the elevator landing door body;

[0007] The mobile device includes a mobile trolley, an electric push rod and a support plate;

[0008] The dynamic impact mechanism includes a first slide and a second slide fixedly connected to the top of the support plate, an impact block arranged outside the second slide, a moving block slidably connected to the inside of the second slide, a connecting block fixedly connected between the moving block and the impact block, a guide rod fixedly connected to the outside of the moving block, a return spring connected around the outside of the guide rod, a transmission slider slidably connected to the inside of the first slide, a roller rotatably connected to the outside of the transmission slider, a return block fixedly connected to the top of the first slide and the second slide, and a firing structure arranged inside the moving block;

[0009] The reciprocating drive mechanism includes a connecting frame fixedly connected to the top of the support plate, a transmission rod slidably connected to the inside of the connecting frame and extending to the outside thereof, a fixed block fixedly connected to the outside of the transmission rod, a support frame fixedly connected to the bottom of the support plate, a drive motor fixedly installed on the top of the support frame, a rotating shaft rotatably connected to the inside of the support frame, a transmission gear fixedly installed on the output shaft of the drive motor, a driven gear fixedly installed on the outside of the rotating shaft and meshing with the transmission gear, a rotating disk fixedly connected to the top of the rotating shaft, a crank rotatably connected to the top of the rotating disk, and a sliding rod hinged to the other end of the crank.

[0010] Furthermore, a connecting ear is fixedly connected to the inner bottom wall of the second slide, the guide rod is slidably connected to the inside of the connecting ear and extends to the outside thereof, the return spring is fixedly connected between the moving block and the connecting ear, and the impact block is a solid rectangular parallelepiped and abuts against the outer surface of the elevator floor door body.

[0011] Furthermore, the firing structure includes a firing block slidably connected to the inside of the moving block and extending to the outside thereof, a limiting shaft fixedly connected to the back of the firing block, and an abutment spring connected around the outside of the limiting shaft, the limiting shaft is slidably connected to the inside of the moving block and extending to the outside thereof, the abutment spring is fixedly connected between the moving block and the firing block, the roller body rolls and abuts against the back of the firing block, and the firing block is slidably connected to the inclined surface of the reset block.

[0012] Furthermore, the right end of the transmission rod is fixedly connected to the back of the transmission slider, and the transmission slider, the moving block and the impact block are connected to the upper surface of the support plate through the transmission rod to swing back and forth.

[0013] Furthermore, one end of the slide rod away from the crank is hinged to the back of the fixed block, and an arc-shaped transmission groove is provided inside the slide rod. The slide rod and the crank are connected to the upper surface of the support plate through a rotating disk for reciprocating swing.

[0014] Furthermore, a stroke adjustment structure for adjusting the reciprocating stroke is provided on the outside of the reciprocating drive mechanism, and the stroke adjustment structure includes two horizontal plates fixedly connected to the outside of the connecting frame, a swing rod rotatably connected to the upper surface of the horizontal plate on the left side, an adjustment wheel rotatably connected to the swing rod away from the horizontal plate on the left side and extending to the inside of the transmission groove, and an adjustment component provided on the lower surface of the swing rod, the adjustment wheel is slidably connected to the inside of the transmission groove, and the outer diameter of the adjustment wheel is adapted to the inner diameter of the transmission groove.

[0015] Furthermore, the adjustment assembly includes two limiting ears fixedly connected to the top of the horizontal plate on the right side, an adjustment screw rotatably connected to the inside of the two limiting ears and extending to the outside thereof, a knob fixedly connected to the end of the adjusting screw away from the limiting ear on the left side, and a threaded block threadedly connected to the outside of the adjusting screw.

[0016] Furthermore, the threaded block is rotatably connected to the middle portion of the swing rod via a pin, a shaft is fixedly connected between the two limiting ears, and the threaded block is slidably connected to the outside of the shaft.

[0017] Furthermore, a stress-sensitive paint spraying structure is provided on the outside of the reciprocating drive mechanism for intuitively displaying the stress distribution of the elevator floor door body by utilizing the color change of the stress-sensitive paint. The stress-sensitive paint spraying structure includes a piston cylinder fixedly connected to the top of the support plate, a nozzle fixedly installed on the top of the impact block, a hose fixedly connected between the piston cylinder and the nozzle, a liquid storage tank fixedly connected to the outside of the support plate, an extraction pipe fixedly connected between the piston cylinder and the liquid storage tank, and a piston assembly arranged inside the piston cylinder and extending to the outside thereof.

[0018] Furthermore, the piston assembly includes a plug plate slidably connected to the inside of the piston cylinder, a connecting shaft fixedly connected to the outside of the plug plate and extending to the outside of the piston cylinder, a circular plate fixedly connected to the right end of the connecting shaft, a transmission spring fixedly connected between the piston cylinder and the circular plate, and a support rod fixedly connected to the outside of the fixed block, and the bottom end of the support rod is fixedly connected to a pressure plate that abuts the outer surface of the circular plate.

[0019] Compared with the prior art, the present invention provides an elevator door strength detection device with the following features:

[0020] Beneficial effects:

[0021] 1. The elevator floor door strength detection device drives the dynamic impact mechanism to operate through a reciprocating drive mechanism. When the transmission slider slides back and forth, its external roller rolls and abuts against the back of the firing block. When the roller rolls to a specific position on the back of the firing block, it pushes the firing block to slide inside the moving block and compresses the abutment spring at the same time. After the firing block slides to contact the inclined surface of the reset block, under the action of the inclined surface of the reset block, the firing block continues to slide and disengages from the contact with the roller. At this time, the abutment spring resets and pushes the firing block to return quickly, so that the moving block drives the impact block to quickly impact the elevator floor door body through the connecting block. This can simulate the impact load of the elevator floor door body under the action of transient force, can more comprehensively reflect the actual strength of the floor door, and achieve the advantage of high accuracy of the detection result.

[0022] 2. This elevator landing door strength detection device can adjust the reciprocating stroke of the reciprocating drive mechanism through a stroke adjustment structure, thereby changing the impact force and frequency of the impact block in the dynamic impact mechanism on the elevator landing door body. It can simulate the impact load of the landing door under the action of transient forces of different intensities and frequencies, which is closer to the force conditions of the landing door in actual use, and improves the accuracy and reliability of the detection results.

[0023] 3. The elevator floor door strength testing device compresses the circular plate when the pressure plate moves left and right. The circular plate drives the plug plate to slide inside the piston cylinder through the connecting shaft, compressing the transmission spring. The stress-sensitive paint in the piston cylinder is squeezed to the nozzle through the hose and sprayed onto the surface of the elevator floor door body before the impact block produces an impact. When the impact block applies pressure to the elevator floor door body, the stress distribution on the elevator floor door body surface can be more accurately displayed by observing the color change, which helps the tester to more accurately understand the stress concentration area and distribution pattern of the floor door under different pressures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural perspective diagram of an elevator door strength detection device according to the present invention;

[0025] Figure 2 This is a three-dimensional diagram of the connection structure of the dynamic impact mechanism and the nozzle of an elevator door strength detection device of the present invention;

[0026] Figure 3 This is a three-dimensional diagram of the connection structure of the trigger block, the limit shaft and the abutment spring of an elevator floor door strength detection device of the present invention;

[0027] Figure 4 This is a structural perspective view of a reciprocating drive mechanism and a stroke adjustment structure of an elevator landing door strength detection device according to the present invention;

[0028] Figure 5 This is a structural stereogram of a transmission rod, a fixed block, and a stroke adjustment structure of an elevator landing door strength detection device according to the present invention;

[0029] Figure 6 This is a structural perspective diagram of a stroke adjustment structure of an elevator floor door strength detection device according to the present invention;

[0030] Figure 7 This is a structural sectional perspective view of a transmission rod, a fixing block, and a stress-sensitive paint spraying structure of an elevator landing door strength detection device according to the present invention;

[0031] Figure 8 The present invention is an elevator door strength detection device Figure 2 Schematic diagram of the enlarged structure of A shown.

[0032] In the figure: 1. Elevator door body; 2. Moving device; 21. Moving trolley; 22. Electric push rod; 23. Support plate; 3. Dynamic impact mechanism; 31. Impact block; 32. First slide; 33. Second slide; 34. Moving block; 35. Connecting block; 36. Connecting ear; 37. Guide rod; 38. Return spring; 39. Trigger block; 310. Limiting shaft; 311. Abutment spring; 312. Transmission slide; 313. Roller; 314. Return block; 4. Reciprocating drive mechanism; 41. Connecting frame; 42. Transmission rod; 43. Fixed block; 44. Support frame; 45. Drive motor; 46. ​​Transmission gear; 47. Rotating shaft; 48. Driven gear; 49. Rotating disk; 410. Crank; 411. Sliding rod; 412. Transmission groove; 5. Stroke adjustment structure; 51. Horizontal plate; 52. Swinging rod; 53. Limiting ear; 54. Adjusting screw; 55. Knob; 56. Threaded block; 57. Adjusting wheel; 58. Shaft; 6. Stress-sensitive paint spraying structure; 61. Piston cylinder; 62. Spray nozzle; 63. Hose; 64. Liquid storage tank; 65. Extraction tube; 66. Plug plate; 67. Connecting shaft; 68. Circular plate; 69. Transmission spring; 610. Support rod; 611. Pressure plate. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1 to 8In this embodiment, an elevator floor door strength detection device includes a mobile device 2 arranged outside the elevator floor door body 1, and a dynamic impact mechanism 3 for simulating impact forces of different intensities and frequencies on the elevator floor door body 1 is provided on the top of the mobile device 2, and a reciprocating drive mechanism 4 for realizing reciprocating impact drive of the elevator floor door body 1 is provided on the outside of the dynamic impact mechanism 3; the mobile device 2 includes a moving trolley 21, an electric push rod 22 and a support plate 23; the hydraulic cylinder 22 is fixedly installed on the top of the moving trolley 21, and the support plate 23 is fixedly installed on the output end of the electric push rod 22. The moving trolley 21 facilitates the overall movement of the device to different detection positions, and the electric push rod 22 can adjust the height of the support plate 23 so that the dynamic impact mechanism 3 can adapt to elevator floor door bodies 1 of different heights; the support plate 23 provides an installation base for other components.

[0035] The dynamic impact mechanism 3 includes a first slide 32 and a second slide 33 fixedly connected to the top of the support plate 23, an impact block 31 disposed on the outside of the second slide 33, a moving block 34 slidably connected to the inside of the second slide 33, a connecting block 35 fixedly connected between the moving block 34 and the impact block 31, a guide rod 37 fixedly connected to the outside of the moving block 34, a return spring 38 connected around the outside of the guide rod 37, a transmission slider 312 slidably connected to the inside of the first slide 32, a roller 313 rotatably connected to the outside of the transmission slider 312, a return block 314 fixedly connected to the tops of the first and second slides 32 and 33, and a triggering structure disposed inside the moving block 34. The dynamic impact mechanism 3 can simulate the impact loads experienced by the elevator landing door body 1 under transient forces. Compared to the traditional method of acquiring data by simply extending and retracting the hydraulic cylinder to interact with the elevator landing door body 1, this simulation method is more similar to the various impact conditions that the elevator landing door body 1 may encounter in actual use and can more comprehensively reflect the actual strength of the landing door.

[0036] Specifically, a connecting ear 36 is fixedly connected to the inner bottom wall of the second slide 33, a guide rod 37 is slidably connected to the inside of the connecting ear 36 and extends to the outside thereof, a return spring 38 is fixedly connected between the moving block 34 and the connecting ear 36, and the impact block 31 is a solid rectangular parallelepiped and abuts against the outer surface of the elevator floor door body 1.

[0037] It should be noted that the firing structure includes a firing block 39 that is slidably connected to the inside of the moving block 34 and extends to the outside thereof, a limiting shaft 310 that is fixedly connected to the back of the firing block 39, and an abutment spring 311 that is connected to the outside of the limiting shaft 310. The limiting shaft 310 is slidably connected to the inside of the moving block 34 and extends to the outside thereof, the abutment spring 311 is fixedly connected between the moving block 34 and the firing block 39, the roller 313 rolls and abuts against the back of the firing block 39, and the firing block 39 is slidably connected to the inclined surface of the reset block 314.

[0038] During use, the dynamic impact mechanism 3 is driven by the reciprocating drive mechanism 4. As the transmission slider 312 reciprocates, its external roller 313 rolls against the back of the firing block 39. When the roller 313 reaches a specific position on the back of the firing block 39, it pushes the firing block 39 to slide within the movable block 34, compressing the abutment spring 311. After the firing block 39 slides until it contacts the inclined surface of the return block 314, the inclined surface of the return block 314 causes the firing block 39 to continue sliding and disengage from the roller 313. At this point, the abutment spring 311 resets, pushing the firing block 39 back rapidly. The rapid return of the firing block 39 drives the movable block 34 to slide within the second slide 33. The movable block 34, via the connecting block 35, drives the impact block 31 to rapidly impact the elevator door body 1, simulating a transient impact force. After the impact is complete, the return spring 38 resets, driving the movable block 34 and the impact block 31 back to their initial positions, awaiting the next firing.

[0039] See also Figure 1 、 Figures 4 and 5 In this embodiment, the reciprocating drive mechanism 4 includes a connecting frame 41 fixedly connected to the top of the support plate 23, a transmission rod 42 slidably connected to the inside of the connecting frame 41 and extending to the outside thereof, a fixed block 43 fixedly connected to the outside of the transmission rod 42, a support frame 44 fixedly connected to the bottom of the support plate 23, a drive motor 45 fixedly installed on the top of the support frame 44, a rotating shaft 47 rotatably connected to the inside of the support frame 44, a transmission gear 46 fixedly installed on the output shaft of the drive motor 45, a driven gear 48 fixedly installed on the outside of the rotating shaft 47 and meshing with the transmission gear 46, a rotating disk 49 fixedly connected to the top of the rotating shaft 47, a crank 410 rotatably connected to the top of the rotating disk 49, and a sliding rod 411 hinged to the other end of the crank 410.

[0040] The right end of the transmission rod 42 is fixedly connected to the back of the transmission slider 312 , and the transmission slider 312 , the moving block 34 and the impact block 31 are connected to the upper surface of the support plate 23 through the transmission rod 42 to swing back and forth.

[0041] Specifically, the end of the slide rod 411 away from the crank 410 is hinged to the back of the fixed block 43, and a transmission groove 412 arranged in an arc shape is opened inside the slide rod 411. The slide rod 411 and the crank 410 are connected to the upper surface of the support plate 23 through the rotating disk 49 to swing back and forth.

[0042] During use of this embodiment, the controller activates the drive motor 45. The output shaft of the drive motor 45 rotates the transmission gear 46, which in turn rotates the meshing driven gear 48. The driven gear 48 then rotates the rotating shaft 47, which in turn rotates the rotating disk 49. The rotation of the rotating disk 49 drives the crank 410 in a circular motion, which in turn causes the slide bar 411, hinged at the other end of the crank 410, to move. Because the adjusting wheel 57 is slidably connected to the interior of the transmission slot 412, the slide bar 411 oscillates back and forth within the connecting frame 41. The reciprocating oscillation of the slide bar 411 drives the fixed block 43 to reciprocate, which in turn drives the transmission rod 42 to slide back and forth within the connecting frame 41. The right end of the transmission rod 42 is fixedly connected to the back of the transmission slider 312, causing the transmission slider 312 to slide back and forth within the first slide 32.

[0043] See also Figures 4 to 6 In this embodiment, a stroke adjustment structure 5 for adjusting the reciprocating stroke is provided on the exterior of the reciprocating drive mechanism 4. The stroke adjustment structure 5 comprises two transverse plates 51 fixedly connected to the exterior of the connecting frame 41, a swing lever 52 rotatably connected to the upper surface of the left transverse plate 51, an adjustment wheel 57 rotatably connected to the swing lever 52 away from the left transverse plate 51 and extending into the interior of the transmission slot 412, and an adjustment assembly disposed on the lower surface of the swing lever 52. The adjustment wheel 57 is slidably connected to the interior of the transmission slot 412, and the outer diameter of the adjustment wheel 57 matches the inner diameter of the transmission slot 412. The stroke adjustment structure 5 can adjust the reciprocating stroke of the reciprocating drive mechanism 4, thereby varying the magnitude and frequency of the impact force exerted by the impact block 31 of the dynamic impact mechanism 3 on the elevator landing door body 1. This structure can simulate the impact loads experienced by the landing door under transient forces of varying intensities and frequencies, more closely resembling the stress conditions experienced by the landing door in actual use and improving the accuracy and reliability of the test results.

[0044] Among them, the adjustment component includes two limiting ears 53 fixedly connected to the top of the right horizontal plate 51, an adjustment screw 54 rotatably connected to the inside of the two limiting ears 53 and extending to the outside thereof, a knob 55 fixedly connected to the end of the adjusting screw 54 away from the left limiting ear 53, and a threaded block 56 threadedly connected to the outside of the adjusting screw 54.

[0045] Specifically, the threaded block 56 is rotatably connected to the middle portion of the swing rod 52 via a pin shaft, a shaft 58 is fixedly connected between the two limiting ears 53 , and the threaded block 56 is slidably connected to the outside of the shaft 58 .

[0046] When this embodiment is in use, the knob 55 is manually turned to rotate the adjusting screw 54. Since the threaded block 56 is threadedly connected to the outside of the adjusting screw 54 and slidably connected to the outside of the shaft 58, the rotation of the adjusting screw 54 causes the threaded block 56 to move along the shaft 58. The movement of the threaded block 56 drives the swing arm 52 to rotate around the upper surface of the left cross plate 51, thereby changing the position of the adjusting wheel 57 in the transmission slot 412, thereby adjusting the reciprocating stroke of the reciprocating drive mechanism 4.

[0047] See also Figure 1 、 Figure 2 and 7 In this embodiment, a stress-sensitive paint spraying structure 6 is further provided on the outside of the reciprocating drive mechanism 4 for intuitively displaying the stress distribution of the elevator door body 1 by using the color change of the stress-sensitive paint. The stress-sensitive paint spraying structure 6 includes a piston cylinder 61 fixedly connected to the top of the support plate 23, a nozzle 62 fixedly installed on the top of the impact block 31, a hose 63 fixedly connected between the piston cylinder 61 and the nozzle 62, a liquid storage tank 64 fixedly connected to the outside of the support plate 23, an extraction pipe 65 fixedly connected between the piston cylinder 61 and the liquid storage tank 64, and a piston assembly arranged inside the piston cylinder 61 and extending to the outside thereof.

[0048] Among them, the piston assembly includes a plug plate 66 slidingly connected to the inside of the piston cylinder 61, a connecting shaft 67 fixedly connected to the outside of the plug plate 66 and extending to the outside of the piston cylinder 61, a circular plate 68 fixedly connected to the right end of the connecting shaft 67, a transmission spring 69 fixedly connected between the piston cylinder 61 and the circular plate 68, and a support rod 610 fixedly connected to the outside of the fixed block 43, and the bottom end of the support rod 610 is fixedly connected to a pressure plate 611 abutting the outer surface of the circular plate 68.

[0049] During use of this embodiment, when the impact block 31 applies an impact force to the elevator floor door body 1, the movement of the reciprocating drive mechanism 4 is transmitted to the piston assembly via the support rod 610 and the pressure plate 611. The pressure plate 611 abuts against the circular plate 68, pushing the circular plate 68 to the left, thereby driving the plug plate 66 to slide within the piston cylinder 61. The movement of the plug plate 66 compresses the stress-sensitive coating within the piston cylinder 61 and transports it to the spray head 62 via the hose 63, ultimately spraying it onto the surface of the elevator floor door body 1. The stress-sensitive coating sprayed onto the surface of the elevator floor door body 1 changes color when subjected to pressure. When the impact block 31 applies pressure to the elevator floor door body 1, the stress distribution on the surface of the elevator floor door body 1 is visually displayed through the color change of the liquid. By observing the color change, one can more accurately understand the stress concentration areas and distribution patterns of the elevator floor door body 1 under different pressures.

[0050] The working principle of the above embodiment is:

[0051] During use, the moving trolley 21 is moved to the vicinity of the elevator door body 1 to be inspected. The height of the support plate 23 is adjusted by the hydraulic cylinder 22 so that the impact block 31 contacts the outer surface of the elevator door body 1. An appropriate amount of stress-sensitive paint is added to the liquid storage tank 64. The reciprocating drive mechanism 4 and the stroke adjustment structure 5 are adjusted so that the impact block 31 can accurately apply an impact force to the elevator door body 1. The various components of the stress-sensitive paint spraying structure 6 are inspected to ensure smooth paint spraying. The reciprocating drive mechanism 4 is activated by the controller, and the drive motor 45 drives the rotating disk 49 to rotate. The fixed block 43 is caused to swing back and forth through the transmission of the crank 410 and the slide rod 411. The reciprocating swing of the fixed block 43 drives the transmission rod 42 and the transmission slide 312 to move, thereby pushing the moving block 34 and the impact block 31 to apply an impact force to the elevator door body 1. Simultaneously, the motion of the reciprocating drive mechanism 4 is transmitted to the piston assembly via the support rod 610 and the pressure plate 611, driving the stress-sensitive paint within the piston cylinder 61 to be sprayed onto the surface of the elevator landing door body 1 via the spray nozzle 62. After the impact block 31 completes its impact, the color of the stress-sensitive paint on the surface of the elevator landing door body 1 is observed. This color change provides an intuitive understanding of the stress concentration areas and distribution patterns of the landing door under different pressures. Based on this stress distribution, the strength of the elevator landing door body 1 can be assessed to determine whether it meets safety standards.

[0052] The installation method, connection method or setting method disclosed in this embodiment are all common mechanical connection methods, and can be implemented as long as they can achieve their beneficial effects. In addition, the electrical components appearing in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Technicians in this field can control the electrical components through simple programming, and the existing disclosed power connection technology is also common knowledge in this field, so the specific structural composition and working principle will not be described in detail in this embodiment.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An elevator door strength detection device, characterized in that: The invention comprises a mobile device (2) arranged outside an elevator landing door body (1); a dynamic impact mechanism (3) for simulating impact forces of different intensities and frequencies on the elevator landing door body (1) is arranged on the top of the mobile device (2); and a reciprocating drive mechanism (4) for realizing reciprocating impact drive on the elevator landing door body (1) is arranged outside the dynamic impact mechanism (3); The mobile device (2) comprises a moving trolley (21), an electric push rod (22) and a support plate (23); The dynamic impact mechanism (3) comprises a first slide (32) and a second slide (33) fixedly connected to the top of the support plate (23), an impact block (31) arranged outside the second slide (33), a moving block (34) slidably connected inside the second slide (33), a connecting block (35) fixedly connected between the moving block (34) and the impact block (31), a guide rod (37) fixedly connected to the outside of the moving block (34), a return spring (38) connected around the outside of the guide rod (37), a transmission slider (312) slidably connected inside the first slide (32), a roller (313) rotatably connected to the outside of the transmission slider (312), a return block (314) fixedly connected to the top of the first slide (32) and the second slide (33), and a firing structure arranged inside the moving block (34); The reciprocating drive mechanism (4) comprises a connecting frame (41) fixedly connected to the top of the support plate (23), a transmission rod (42) slidably connected to the inside of the connecting frame (41) and extending to the outside thereof, a fixed block (43) fixedly connected to the outside of the transmission rod (42), a supporting frame (44) fixedly connected to the bottom of the supporting plate (23), a driving motor (45) fixedly mounted on the top of the supporting frame (44), a rotating shaft (47) rotatably connected to the inside of the supporting frame (44), a transmission gear (46) fixedly mounted on the output shaft of the driving motor (45), a driven gear (48) fixedly mounted on the outside of the rotating shaft (47) and meshing with the transmission gear (46), a rotating disk (49) fixedly connected to the top of the rotating shaft (47), a crank (410) rotatably connected to the top of the rotating disk (49), and a sliding rod (411) hinged to the other end of the crank (410).

2. The elevator door strength detection device according to claim 1, characterized in that: A connecting ear (36) is fixedly connected to the inner bottom wall of the second sliding seat (33), the guide rod (37) is slidably connected to the inside of the connecting ear (36) and extends to the outside thereof, the return spring (38) is fixedly connected between the moving block (34) and the connecting ear (36), and the impact block (31) is a solid rectangular parallelepiped and abuts against the outer surface of the elevator door body (1).

3. The elevator door strength detection device according to claim 1, characterized in that: The firing structure includes a firing block (39) slidably connected to the inside of the moving block (34) and extending to the outside thereof, a limiting shaft (310) fixedly connected to the back of the firing block (39), and an abutting spring (311) connected around the outside of the limiting shaft (310), wherein the limiting shaft (310) is slidably connected to the inside of the moving block (34) and extending to the outside thereof, the abutting spring (311) is fixedly connected between the moving block (34) and the firing block (39), the roller (313) body rolls and abuts against the back of the firing block (39), and the firing block (39) is slidably connected to the inclined surface of the reset block (314).

4. The elevator door strength detection device according to claim 1, characterized in that: The right end of the transmission rod (42) is fixedly connected to the back of the transmission slider (312), and the transmission slider (312), the moving block (34) and the impact block (31) are connected to the upper surface of the support plate (23) through the transmission rod (42) in a reciprocating swinging manner.

5. The elevator door strength detection device according to claim 1, characterized in that: One end of the slide bar (411) away from the crank (410) is hinged to the back of the fixed block (43), and a transmission groove (412) arranged in an arc shape is provided inside the slide bar (411). The slide bar (411) and the crank (410) are connected to the upper surface of the support plate (23) through a rotating disk (49) to swing back and forth.

6. The elevator door strength detection device according to claim 5, characterized in that: The reciprocating drive mechanism (4) is provided with a stroke adjustment structure (5) for adjusting the reciprocating stroke on the outside. The stroke adjustment structure (5) comprises two transverse plates (51) fixedly connected to the outside of the connecting frame (41), a swing rod (52) rotatably connected to the upper surface of the left transverse plate (51), an adjustment wheel (57) rotatably connected to the swing rod (52) away from the left transverse plate (51) and extending to the inside of the transmission groove (412), and an adjustment assembly provided on the lower surface of the swing rod (52). The adjustment wheel (57) is slidably connected to the inside of the transmission groove (412), and the outer diameter of the adjustment wheel (57) is adapted to the inner diameter of the transmission groove (412).

7. The elevator door strength detection device according to claim 6, characterized in that: The adjustment assembly comprises two limiting ears (53) fixedly connected to the top of the right side horizontal plate (51), an adjustment screw (54) rotatably connected to the inside of the two limiting ears (53) and extending to the outside thereof, a knob (55) fixedly connected to the end of the adjusting screw (54) away from the left side limiting ear (53), and a threaded block (56) threadedly connected to the outside of the adjusting screw (54).

8. The elevator door strength detection device according to claim 7, characterized in that: The threaded block (56) is rotatably connected to the middle of the swing rod (52) via a pin shaft, a shaft (58) is fixedly connected between the two limiting ears (53), and the threaded block (56) is slidably connected to the outside of the shaft (58).

9. The elevator door strength detection device according to claim 1, characterized in that: The reciprocating drive mechanism (4) is further provided with a stress-sensitive paint spraying structure (6) for intuitively displaying the stress distribution of the elevator door body (1) by utilizing the color change of the stress-sensitive paint. The stress-sensitive paint spraying structure (6) comprises a piston cylinder (61) fixedly connected to the top of the support plate (23), a spray head (62) fixedly mounted on the top of the impact block (31), a hose (63) fixedly connected between the piston cylinder (61) and the spray head (62), a liquid storage tank (64) fixedly connected to the outside of the support plate (23), an extraction pipe (65) fixedly connected between the piston cylinder (61) and the liquid storage tank (64), and a piston assembly arranged inside the piston cylinder (61) and extending to the outside thereof.

10. The elevator door strength detection device according to claim 9, characterized in that: The piston assembly includes a plug plate (66) slidably connected to the inside of the piston cylinder (61), a connecting shaft (67) fixedly connected to the outside of the plug plate (66) and extending to the outside of the piston cylinder (61), a circular plate (68) fixedly connected to the right end of the connecting shaft (67), a transmission spring (69) fixedly connected between the piston cylinder (61) and the circular plate (68), and a support rod (610) fixedly connected to the outside of the fixed block (43), and the bottom end of the support rod (610) is fixedly connected to a pressure plate (611) that abuts the outer surface of the circular plate (68).

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