Elevator door bearing strength detector

Abstract

The invention belongs to the technical field of elevator door detection, and particularly discloses an elevator door bearing strength detector which comprises a U-shaped placing frame, a lifting adjusting assembly is arranged on the side wall of the placing frame, and a detection triggering assembly is arranged on the lifting adjusting assembly. The lifting adjusting assembly and the detection triggering assembly are provided with a detection pushing assembly, the side wall of the lifting adjusting assembly is provided with a bending guiding assembly, and the bending guiding assembly is provided with an automatic righting assembly. According to the invention, the detection pressure head does not need to be adjusted to be just contacted with the elevator door, the deformation of the elevator door is converted into the liquid level change of the detection liquid in the detection tube through the change of the two-phase state of the electrorheological fluid, and the elastic deformation quantity and the permanent deformation quantity of the elevator door can be conveniently detected.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator door detection, and specifically refers to an elevator door pressure strength detector. Background Art

[0002] According to the requirements of GB7588-2003 "Safety Specifications for Elevator Safety Manufacturing and Installation", when the elevator floor doors are in the locked position, all floor doors and their door locks should have the following mechanical strength: when a static force of 300N is applied vertically to any position on any surface of the door leaf or door frame and evenly distributed on a circular or square area of ​​5cm², the elastic deformation is no more than 15mm; the permanent deformation is no more than 1mm; after the test, the safety function of the door is not affected. When a static force of 1000N is applied vertically to any position on any surface of the door leaf or door frame and evenly distributed on a circular or square area of ​​100cm², there should be no obvious permanent deformation that affects the function and safety.

[0003] The permanent deformation and elastic deformation of elevator doors are generally detected using infrared distance detectors, which require multiple measurements and are cumbersome to operate. In addition, when using infrared distance detectors, the test pressure head will block the point of action, and the test point and the point of action cannot be completely coincident, so the elastic deformation and permanent deformation cannot be accurately detected.

[0004] Therefore, a kind of elevator door pressure bearing strength detector is needed to solve the above-mentioned problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an elevator door pressure strength tester, which does not need to adjust the detection pressure head to be in exact contact with the elevator door. Through the change of the two-phase state of the electrorheological fluid, the deformation of the elevator door is converted into the change of the liquid level of the detection fluid in the detection tube, and the elastic deformation and permanent deformation of the elevator door can be conveniently detected.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes an elevator door pressure strength tester, including a placement rack, the placement rack is arranged in a U shape, the side wall of the placement rack is provided with a lifting and adjusting component, the lifting and adjusting component is provided with a detection trigger component, the lifting and adjusting component and the detection trigger component are provided with a detection propulsion component, the side wall of the lifting and adjusting component is provided with a bending guide component, and the bending guide component is provided with an automatic straightening component.

[0007] Furthermore, the lifting and adjusting assembly includes a lower support plate, an upper support plate, a lifting motor, a lifting threaded rod, a lifting limit rod and a lifting cross plate, the lower support plate is symmetrically arranged on the lower end side wall of the placement rack, the upper support plate is symmetrically arranged on the upper end side wall of the placement rack, the upper support plate and the lower support plate are arranged relatively to each other up and down, the two ends of the lifting threaded rod are respectively arranged on one of the lower support plate and the upper support plate, the upper end of the lifting threaded rod passes through the upper support plate, the lifting motor is arranged on the upper wall of the upper support plate, the lifting motor is connected to the lifting threaded rod, the two ends of the lifting limit rod are arranged on the other lower support plate and the upper support plate, and the lifting cross plate is arranged on the lifting threaded rod and the lifting limit rod.

[0008] Furthermore, the detection trigger assembly includes a detection cylinder, a trigger rod, a trigger spring, a detection pressure head, a piston, a magnetic ring, an electromagnet, a conductive needle 1, a conductive needle 2, a partition, a connecting hose, a detection tube, an electrorheological fluid, a bending tube and a guide frame. The detection cylinder is slidably penetrated and arranged on the lifting horizontal plate, the partition is arranged at the front end of the detection cylinder, the trigger rod is penetrated and arranged on the outer end surface of the detection cylinder, the detection pressure head is arranged on the outer end of the trigger rod, the trigger spring is sleeved on the trigger rod, the two ends of the trigger spring are arranged on the trigger rod and the outer end surface of the detection cylinder, the piston is slidably arranged in the detection cylinder, the magnetic ring is arranged on one end surface of the piston, the electromagnet is arranged on the end surface of the partition, the magnetic ring and The electromagnets are arranged relatively to each other, one end of the connecting hose is penetrated by the piston and the magnetic ring, the guide frame is arranged on the side wall of the lifting horizontal plate, one end of the bending tube is penetrated by the side wall of the guide frame, the conductive needle 1 and the conductive needle 2 penetrate the partition, the electromagnet and the end of the connecting hose, the conductive needle 1 and the conductive needle 2 are fixed on the partition and the electromagnet, the ends of the conductive needle 1 and the conductive needle 2 are inserted into the connecting hose, the interior of the connecting hose is filled with electrorheological fluid, the two ends of the connecting hose are closed, the conductive needle 1 and the conductive needle 2 are both connected to the electrorheological fluid, a detection tube is penetrated inside the connecting hose, the detection tube is filled with detection fluid, and the connecting hose passes through the bending tube.

[0009] Furthermore, the detection propulsion assembly includes a vertical plate, a hydraulic rod, a connecting plate and a fixing hoop, the vertical plate is arranged at the middle part of the upper wall of the lifting horizontal plate, the fixed end of the hydraulic rod is arranged at the side wall of the vertical plate, the fixing hoop is slidably arranged on the detection cylinder, the upper end of the connecting plate is arranged at the movable end of the hydraulic rod, the lower end of the connecting plate is arranged on the fixing hoop, and the fixing hoop is provided with two locking screws.

[0010] Furthermore, the automatic righting assembly includes a righting spring, a lower support ring and an upper baffle, the lower support ring is arranged at the upper end of the bending tube, the upper baffle is arranged at the upper end of the connecting hose, the upper end of the connecting hose passes through the upper baffle, the righting spring is sleeved on the connecting hose, and the two ends of the righting spring are respectively arranged on the upper wall of the lower support ring and the lower wall of the upper baffle.

[0011] Furthermore, a conductive ring 1 is provided on the inner side wall of the detection pressure head, a conductive ring 2 is provided on the outer end surface of the detection cylinder, and a power supply is provided on the lower wall of the detection cylinder. When the conductive ring 1 and the conductive ring 2 are connected to each other, the conductive ring 1, the conductive ring 2, the electrorheological fluid, the conductive needle 1, the conductive needle 2 and the power supply form an electrical circuit through the wire.

[0012] Furthermore, a locking screw 1 is provided on the upper wall of the outer end of the detection tube, the lower end of the locking screw 1 is a light rod, and a locking hole is provided on the upper wall of the trigger rod. When the conductive ring 1 and the conductive ring 2 are connected, the locking screw 1 is aligned with the locking hole.

[0013] Furthermore, two symmetrical inner side walls of the placement rack are provided with placement grooves, and the outer side wall of the placement rack is penetrated by a clamping bolt.

[0014] Furthermore, the connecting hose is a transparent tube, and a scale line is provided on the outer wall of the upper end of the connecting hose.

[0015] Furthermore, the lower wall of the lower support plate is provided with walking wheels.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. When the conductive ring 1 and the conductive ring 2 are in contact, the conductive ring 1, the conductive ring 2, the electrorheological fluid, the conductive needle 1, the conductive needle 2 and the power supply form an electrical circuit through the wire. The electrorheological fluid is applied with voltage, and the electrorheological fluid changes from liquid to solid. Since the connecting hose is in a bent state under the action of the bending tube, when the electrorheological fluid changes to solid, the connecting hose is blocked by the bending tube, the electromagnet is disconnected, and the electromagnet no longer attracts the magnetic suction ring. When the detection pressure head continues to squeeze the elevator door, the elevator door is deformed, and the detection tube moves toward the elevator door. At this time, under the action of the connecting hose, the piston and the magnetic suction ring are stationary. At this time, the pressure in the space between the magnetic suction ring and the connecting hose and the electromagnet is reduced, and the detection liquid in the detection tube enters the space between the magnetic suction ring and the connecting hose and the electromagnet, thereby causing the liquid level of the detection liquid at the upper end of the detection tube to change. Observe the scale line and record the value b; 2. Insert locking screw 1 into the locking hole to keep conductive ring 1 and conductive ring 2 connected. The electrorheological fluid is still in a solid state. Unscrew locking screw 2. The elevator door rebounds to push the detection pressure head, which pushes the detection tube to move. The detection tube drives the partition and the electromagnet to move, thereby pushing part of the detection liquid between the electromagnet and the connecting hose in the detection tube into the detection tube. Observe the scale line again and record the value c. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of an elevator door pressure strength tester proposed by the present invention; Figure 2It is a three-dimensional structural schematic diagram of the lifting and lowering adjustment component; Figure 3 It is a three-dimensional structural schematic diagram of the automatic straightening component, the bending guide component and the detection trigger component; Figure 4 A schematic diagram of the internal structure of the detection trigger component; Figure 5 A schematic diagram of the three-dimensional structure of the detection propulsion assembly; Figure 6 for Figure 4 Enlarged view of part A; Figure 7 A three-dimensional structural diagram showing the positional relationship between the detection pressure head, the trigger rod and the trigger spring; Figure 8 for Figure 4 Enlarged view of part B.

[0018] Among them, 1. Placement rack, 2. Lifting adjustment component, 3. Detection trigger component, 4. Detection propulsion component, 5. Bending guide component, 6. Automatic straightening component, 7. Lower support plate, 8. Upper support plate, 9. Lifting motor, 10. Lifting threaded rod, 11. Lifting limit rod, 12. Lifting horizontal plate, 13. Detection cylinder, 14. Trigger rod, 15. Trigger spring, 16. Detection pressure head, 17. Piston, 18. Magnetic ring, 19. Electromagnet, 20. Conductive needle one, 21. Conductive needle two, 22. Partition, 2 3. Connecting hose, 24. Detection tube, 25. Electrorheological fluid, 26. Bending tube, 27. Guide frame, 28. Detection fluid, 29. Vertical plate, 30. Hydraulic rod, 31. Connecting plate, 32. Fixing hoop, 33. Locking screw 2, 34. Righting spring, 35. Lower support ring, 36. Upper baffle, 37. Conductive ring 1, 38. Conductive ring 2, 39. Power supply, 40. Locking screw 1, 41. Locking hole, 42. Placement slot, 43. Clamping bolt, 44. Travel wheel, 45. Scale line, 46. Wire.

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0022] like Figure 1 As shown, the present invention proposes an elevator door pressure strength tester, including a placement rack 1, the placement rack 1 is arranged in a U shape, the side wall of the placement rack 1 is provided with a lifting and adjusting component 2, the lifting and adjusting component 2 is provided with a detection trigger component 3, the lifting and adjusting component 2 and the detection trigger component 3 are provided with a detection propulsion component 4, the side wall of the lifting and adjusting component 2 is provided with a bending guide component 5, and the bending guide component 5 is provided with an automatic straightening component 6.

[0023] like Figure 1 , Figure 2 As shown, the lifting and adjusting assembly 2 includes a lower support plate 7, an upper support plate 8, a lifting motor 9, a lifting threaded rod 10, a lifting limit rod 11 and a lifting cross plate 12. The lower support plate 7 is symmetrically arranged on the lower end side wall of the placement rack 1, and the upper support plate 8 is symmetrically arranged on the upper end side wall of the placement rack 1. The upper support plate 8 and the lower support plate 7 are arranged relatively to each other up and down. The two ends of the lifting threaded rod 10 are respectively arranged on one of the lower support plates 7 and the upper support plate 8. The upper end of the lifting threaded rod 10 passes through the upper support plate 8. The lifting motor 9 is arranged on the upper wall of the upper support plate 8. The lifting motor 9 is connected to the lifting threaded rod 10. The two ends of the lifting limit rod 11 are arranged on the other lower support plate 7 and the upper support plate 8. The lifting cross plate 12 is arranged on the lifting threaded rod 10 and the lifting limit rod 11.

[0024] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 8As shown, the detection trigger assembly 3 includes a detection cylinder 13, a trigger rod 14, a trigger spring 15, a detection pressure head 16, a piston 17, a magnetic ring 18, an electromagnet 19, a conductive needle 1 20, a conductive needle 21, a partition 22, a connecting hose 23, a detection tube 24, an electrorheological fluid 25, a bending tube 26 and a guide frame 27. The detection cylinder 13 is slidably penetrated and arranged on the lifting horizontal plate 12, the partition 22 is arranged at the front end of the detection cylinder 13, the trigger rod 14 is penetrated and arranged on the outer end surface of the detection cylinder 13, the detection pressure head 16 is arranged at the outer end of the trigger rod 14, the trigger spring 15 is sleeved on the trigger rod 14, the two ends of the trigger spring 15 are arranged on the outer end surfaces of the trigger rod 14 and the detection cylinder 13, the piston 17 is slidably arranged in the detection cylinder 13, the magnetic ring 18 is arranged on one end surface of the piston 17, the electromagnet 19 is arranged on the end surface of the partition 22, and the magnetic ring 18 is arranged opposite to the electromagnet 19, one end of the connecting hose 23 is penetrated by the piston 17 and the magnetic ring 18, the guide frame 27 is arranged on the side wall of the lifting horizontal plate 12, one end of the bending tube 26 is penetrated by the side wall of the guide frame 27, the conductive needle 1 20 and the conductive needle 21 penetrate the partition 22, the electromagnet 19 and the end of the connecting hose 23, the conductive needle 1 20 and the conductive needle 21 are fixed on the partition 22 and the electromagnet 19, the ends of the conductive needle 1 20 and the conductive needle 21 are inserted into the connecting hose 23, the interior of the connecting hose 23 is filled with electrorheological fluid 25, the two ends of the connecting hose 23 are closed, the conductive needle 1 20 and the conductive needle 21 are both connected to the electrorheological fluid 25, the interior of the connecting hose 23 is penetrated by a detection tube 24, the detection tube 24 is filled with detection fluid 28, and the connecting hose 23 passes through the bending tube 26.

[0025] like Figure 1 , Figure 5 As shown, the detection propulsion assembly 4 includes a vertical plate 29, a hydraulic rod 30, a connecting plate 31 and a fixing hoop 32. The vertical plate 29 is arranged at the middle of the upper wall of the lifting horizontal plate 12, the fixed end of the hydraulic rod 30 is arranged on the side wall of the vertical plate 29, the fixing hoop 32 is slidably arranged on the detection cylinder 13, the upper end of the connecting plate 31 is arranged on the movable end of the hydraulic rod 30, the lower end of the connecting plate 31 is arranged on the fixing hoop 32, and the fixing hoop 32 is provided with a locking screw 2 33.

[0026] like Figure 1 , Figure 3 , Figure 4As shown, the automatic righting assembly 6 includes a righting spring 34, a lower support ring 35 and an upper baffle 36, the lower support ring 35 is arranged at the upper end of the bending tube 26, the upper baffle 36 is arranged at the upper end of the connecting hose 23, the upper end of the connecting hose 23 passes through the upper baffle 36, the righting spring 34 is sleeved on the connecting hose 23, and the two ends of the righting spring 34 are respectively arranged on the upper wall of the lower support ring 35 and the lower wall of the upper baffle 36.

[0027] like Figure 1 , Figure 3 , Figure 4 , Figure 6 As shown, the inner side wall of the detection pressure head 16 is provided with a conductive ring 1 37, the outer end surface of the detection tube 13 is provided with a conductive ring 2 38, and the lower wall of the detection tube 13 is provided with a power supply 39. When the conductive ring 1 37 and the conductive ring 2 38 are connected, the conductive ring 1 37, the conductive ring 2 38, the electrorheological fluid 25, the conductive needle 1 20, the conductive needle 2 21 and the power supply 39 form an electrical circuit through the wire 46.

[0028] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, a locking screw 40 is provided on the upper wall of the outer end of the detection tube 13, and the lower end of the locking screw 40 is a light rod. A locking hole 41 is provided on the upper wall of the trigger rod 14. When the conductive ring 1 37 and the conductive ring 2 38 are connected, the locking screw 40 is aligned with the locking hole 41.

[0029] like Figure 1 , Figure 2 As shown, two symmetrical inner side walls of the placement rack 1 are provided with placement grooves 42 .

[0030] like Figure 1 , Figure 2 As shown, a clamping bolt 43 is penetrated through the outer wall of the placement rack 1 .

[0031] like Figure 1 , Figure 3 As shown, the connecting hose 23 is a transparent tube, and a scale line 45 is provided on the outer wall of the upper end of the connecting hose 23 .

[0032] like Figure 1 As shown, the lower wall of the lower support plate 7 is provided with walking wheels 44 .

[0033] When in use, place the elevator door hanger in the placement groove 42, adjust the clamping bolt 43, and clamp the elevator door in the placement groove 42. First, observe the scale line and record the value a. Then, use the locking screw 33 to connect the detection cylinder 13 and the fixing hoop 32 together, adjust the hydraulic rod 30 to contract, the hydraulic rod 30 drives the connecting plate 31 to move, and the connecting plate 31 drives the fixing hoop 32 and the detection cylinder 13 to move. Control the electromagnet 19 to turn on the electromagnet 19, the electromagnet 19 attracts the magnetic ring 18, and fixes the connecting hose 23 on the partition 22. The detection cylinder 13 drives the trigger rod 14 and the detection pressure head 16 to move to the elevator door, and the detection pressure head 16 contacts the elevator door. The detection pressure head 16 presses on the elevator. On the door, the detection cylinder 13 continues to move toward the elevator door, the detection cylinder 13 squeezes the trigger spring 15, the detection cylinder 13 drives the piston 17 and the connecting hose 23 to move together, the upper end of the connecting hose 23 pulls down the upper baffle 36, and the upper baffle 36 presses down the straightening spring 34. When the conductive ring 1 37 and the conductive ring 2 38 are in contact, the conductive ring 1 37, the conductive ring 2 38, the electrorheological fluid 25, the conductive needle 1 20, the conductive needle 21 and the power supply 39 form an electrical circuit through the wire 46. A voltage is applied to the electrorheological fluid 25, and the electrorheological fluid 25 changes from liquid to solid. Since the connecting hose 23 is in a bent state under the action of the bending tube 26, when the electrorheological fluid 25 becomes solid, the connecting hose Tube 23 is blocked by bent tube 26, and electromagnet 19 is disconnected. Electromagnet 19 no longer attracts magnetic ring 18. When detection pressure head 16 continues to squeeze the elevator door, the elevator door is deformed, and detection tube 13 moves toward the elevator door. At this time, under the action of connecting hose 23, piston 17 and magnetic ring 18 are stationary. At this time, the pressure in the space between magnetic ring 18 and connecting hose 23 and electromagnet 19 decreases, and detection liquid 28 in detection tube 24 enters into the space between magnetic ring 18 and connecting hose 23 and electromagnet 19, thereby causing the liquid level of detection liquid 28 at the upper end of detection tube 24 to change. Observe the scale line and record the value b. At this time, the locking hole on trigger rod 14 is 41 is aligned with the locking screw 1 40, and then the locking screw 1 40 is tightened. The lower end of the locking screw 1 40 is inserted into the locking hole 41. The conductive ring 1 37 and the conductive ring 2 38 remain connected. The electrorheological fluid 25 is still in a solid state. The locking screw 2 33 is unscrewed. The elevator door rebounds and pushes the detection pressure head 16. The detection pressure head 16 pushes the detection cylinder 13 to move. The detection cylinder 13 drives the partition 22 and the electromagnet 19 to move, thereby pushing part of the detection liquid 28 between the electromagnet 19 and the connecting hose 23 in the detection cylinder 13 into the detection tube 24. Observe the scale line again and record the value c. The elastic deformation of the elevator door d=cb, and the permanent deformation of the elevator door e=ac; Unscrew the locking screw 40. Under the action of the trigger spring 15, the detection tube 13 moves in the direction away from the detection pressure head 16, and the conductive ring 1 37 and the conductive ring 2 38 are separated. The conductive ring 1 37, the conductive ring 2 38, the electrorheological fluid 25, the conductive needle 1 20, the conductive needle 21 and the power supply 39 are disconnected through the wire 46 to form an electrical circuit. The electrorheological fluid 25 is no longer applied with voltage, and the electrorheological fluid 25 changes from solid to liquid. The righting spring 34 pushes the upper baffle 36 upward, and the upper baffle 36 pulls the connecting hose 23 upward. The connecting hose 23 pulls the piston 17 and the magnetic ring 18 back, and then tighten the locking screw 2 33 to adjust the extension of the hydraulic rod 30. The hydraulic rod 30 drives the connecting plate 31 and the fixing hoop 32 to move. The detection tube 13 is driven to move until the electromagnet 19 contacts the magnetic ring 18, and the partition 22 pushes the electromagnet 19 and the connecting hose 23 to move, and the connecting hose 23 pushes the upper baffle 36 to move upward, and the upper baffle 36 pushes the righting spring 34 upward, and then the locking screw 23 is unscrewed, and the righting spring 34 pulls the upper baffle 36 downward again, and the righting spring 34 returns to its original state. The detection tube 13 drives the trigger rod 14 and the detection pressure head 16 back to their original state, and then the lifting motor 9 is turned on, and the lifting motor 9 drives the lifting threaded rod 10 to rotate, thereby driving the lifting cross plate 12 to rise and fall, and select a detection point again, repeat the above operation, and quickly complete the detection of elastic deformation of multiple detection points of the elevator door.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0036] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An elevator door pressure strength tester, comprising a placement frame (1), characterized in that: The placement rack (1) is arranged in a U-shape, a lifting adjustment component (2) is provided on the side wall of the placement rack (1), a detection trigger component (3) is provided on the lifting adjustment component (2), a detection propulsion component (4) is provided on the lifting adjustment component (2) and the detection trigger component (3), a bending guide component (5) is provided on the side wall of the lifting adjustment component (2), and an automatic straightening component (6) is provided on the bending guide component (5).

2. The elevator door pressure strength tester according to claim 1, characterized in that: The lifting adjustment component (2) comprises a lower support plate (7), an upper support plate (8), a lifting motor (9), a lifting threaded rod (10), a lifting limit rod (11) and a lifting transverse plate (12); the lower support plate (7) is symmetrically arranged on the lower end side wall of the placement frame (1); the upper support plate (8) is symmetrically arranged on the upper end side wall of the placement frame (1); the upper support plate (8) and the lower support plate (7) are arranged opposite to each other in the upper and lower directions; the two ends of the lifting threaded rod (10) are respectively arranged on one of the lower support plate (7) and the upper support plate (8); the upper end of the lifting threaded rod (10) passes through the upper support plate (8); the lifting motor (9) is arranged on the upper wall of the upper support plate (8); the lifting motor (9) is connected to the lifting threaded rod (10); the two ends of the lifting limit rod (11) are arranged on the other lower support plate (7) and the upper support plate (8); and the lifting transverse plate (12) is arranged on the lifting threaded rod (10) and the lifting limit rod (11).

3. The elevator door pressure strength tester according to claim 2, characterized in that: The detection trigger assembly (3) comprises a detection cylinder (13), a trigger rod (14), a trigger spring (15), a detection pressure head (16), a piston (17), a magnetic ring (18), an electromagnet (19), a conductive needle 1 (20), a conductive needle 2 (21), a partition (22), a connecting hose (23), a detection tube (24), an electrorheological fluid (25), a bending tube (26) and a guide frame (27); the detection cylinder (13) is slidably penetrated on the lifting horizontal plate (12); the partition (22) is arranged on the detection cylinder (13) The front end of the detection tube (13) is provided inside the trigger rod (14), the trigger rod (14) penetrates the outer end surface of the detection tube (13), the detection pressure head (16) is provided at the outer end of the trigger rod (14), the trigger spring (15) is sleeved on the trigger rod (14), the two ends of the trigger spring (15) are provided on the outer end surfaces of the trigger rod (14) and the detection tube (13), the piston (17) is slidably provided in the detection tube (13), the magnetic attraction ring (18) is provided on one end surface of the piston (17), the electromagnet (19) is provided on the end surface of the partition plate (22), and the magnetic attraction ring (18) is arranged opposite to the electromagnet (19), one end of the connecting hose (23) is penetrated on the piston (17) and the magnetic ring (18), the guide frame (27) is arranged on the side wall of the lifting horizontal plate (12), one end of the bending tube (26) is penetrated on the side wall of the guide frame (27), the conductive needle 1 (20) and the conductive needle 2 (21) penetrate the partition (22), the electromagnet (19) and the end of the connecting hose (23), the conductive needle 1 (20) and the conductive needle 2 (21) are fixed on the partition (22) and the electromagnet On the iron (19), the ends of the conductive needle 1 (20) and the conductive needle 2 (21) are inserted into the connecting hose (23), the interior of the connecting hose (23) is filled with electrorheological fluid (25), the two ends of the connecting hose (23) are closed, the conductive needle 1 (20) and the conductive needle 2 (21) are connected to the electrorheological fluid (25), the interior of the connecting hose (23) is penetrated by a detection tube (24), the detection tube (24) is filled with detection fluid (28), and the connecting hose (23) passes through the bending tube (26).

4. The elevator door pressure strength tester according to claim 3, characterized in that: The detection propulsion assembly (4) comprises a vertical plate (29), a hydraulic rod (30), a connecting plate (31) and a fixing hoop (32); the vertical plate (29) is arranged at the middle of the upper wall of the lifting horizontal plate (12); the fixed end of the hydraulic rod (30) is arranged at the side wall of the vertical plate (29); the fixing hoop (32) is slidably arranged on the detection cylinder (13); the upper end of the connecting plate (31) is arranged at the movable end of the hydraulic rod (30); the lower end of the connecting plate (31) is arranged on the fixing hoop (32); and the fixing hoop (32) is provided with a locking screw 2 (33).

5. The elevator door pressure strength tester according to claim 4, characterized in that: The automatic righting assembly (6) comprises a righting spring (34), a lower support ring (35) and an upper baffle (36); the lower support ring (35) is arranged at the upper end of the bending tube (26); the upper baffle (36) is arranged at the upper end of the connecting hose (23); the upper end of the connecting hose (23) passes through the upper baffle (36); the righting spring (34) is sleeved on the connecting hose (23); and the two ends of the righting spring (34) are respectively arranged on the upper wall of the lower support ring (35) and the lower wall of the upper baffle (36).

6. The elevator door pressure strength tester according to claim 5, characterized in that: The inner side wall of the detection pressure head (16) is provided with a conductive ring 1 (37), the outer end surface of the detection tube (13) is provided with a conductive ring 2 (38), and the lower wall of the detection tube (13) is provided with a power supply (39). When the conductive ring 1 (37) and the conductive ring 2 (38) are connected, the conductive ring 1 (37), the conductive ring 2 (38), the electrorheological fluid (25), the conductive needle 1 (20), the conductive needle 2 (21) and the power supply (39) form an electrical circuit through a wire (46).

7. The elevator door pressure strength tester according to claim 6, characterized in that: The upper wall of the outer end of the detection tube (13) is provided with a locking screw 1 (40), the lower end of the locking screw 1 (40) is a light rod, and the upper wall of the trigger rod (14) is provided with a locking hole (41), and when the conductive ring 1 (37) and the conductive ring 2 (38) are connected, the locking screw 1 (40) is aligned with the locking hole (41).

8. The elevator door pressure strength tester according to claim 7, characterized in that: Two symmetrical inner side walls of the placement rack (1) are provided with placement grooves (42), and an outer side wall of the placement rack (1) is penetrated by a clamping bolt (43).

9. The elevator door pressure strength tester according to claim 8, characterized in that: The connecting hose (23) is a transparent tube, and a scale mark (45) is provided on the outer wall of the upper end of the connecting hose (23).

10. The elevator door pressure strength tester according to claim 9, characterized in that: The lower wall of the lower support plate (7) is provided with walking wheels (44).

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