An elevator sill load-bearing testing device

Abstract

This invention relates to the field of testing equipment technology and discloses an elevator sill load-bearing testing device, including a support frame. A pressure-applying component is fixedly installed at the top of the support frame, and an unlocking component is provided at the right end of the pressure-applying component. The pressure-applying component includes a connecting rod, which is movably connected to the top of the support frame. A connecting pipe is movably connected to the surface of the connecting rod, and a pressure head is fixedly installed at the bottom end of the connecting pipe. Both the top ends of the connecting rod and the connecting pipe are threaded. This invention uses a hydraulic cylinder to drive the connecting rod and the pressure head upwards. When gear two moves upwards with the connecting pipe and contacts rack one, gear two rotates, driving bevel gear two to rotate. Through the meshing of bevel gear two and bevel gear one, gear one can be driven to rotate, thereby driving the gear ring and the connecting pipe to rotate, unlocking the connecting pipe and the connecting rod. At this time, the pressure head falls downwards under the action of gravity and hits the sill, simulating the instantaneous impact force on the sill, thus improving the testing effect.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and more specifically, to an elevator sill load-bearing testing device. Background Technology

[0002] An elevator sill is a grooved metal step used for entering and exiting the elevator car or landing door. Elevator sills effectively ensure passenger safety and allow for a better fit between the elevator and the car during use. After production, to ensure stability, the sill's load-bearing capacity needs to be tested. Current technologies often use hydraulic cylinders to directly apply pressure to the sill and employ pressure sensors to monitor the pressure in real time, gradually increasing the pressure. However, most of these methods cannot simulate the instantaneous impact force on the sill, thus reducing the effectiveness of the testing. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, this invention provides an elevator sill load-bearing testing device, which has the advantage of improving the testing effect.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an elevator sill load-bearing testing device, comprising a support frame, wherein a pressure-applying component is fixedly installed at the top of the support frame, and an unlocking component is provided at the right end of the pressure-applying component; The pressure application component includes a connecting rod, which is movably connected to the top of the support frame. A connecting tube is movably connected to the surface of the connecting rod, and a pressure head is fixedly installed at the bottom end of the connecting tube. Both the top ends of the connecting rod and the connecting tube are threaded. The unlocking component includes a connecting frame, with gear one and gear two rotatably connected to the bottom and right ends of the connecting frame, respectively. Bevel gear one and bevel gear two are fixedly installed on the top end of gear one and the left end of gear two, respectively. A toothed ring is fixedly installed on the surface of the connecting tube, and rack one is fixedly installed on the top end of the support frame.

[0005] As a preferred embodiment of the present invention, the pressure application assembly further includes a hydraulic cylinder, which is fixedly installed on the top of the support frame, and the connecting rod is fixedly installed on the output end of the hydraulic cylinder. The threads on the top of the connecting rod and the connecting pipe are engaged with each other.

[0006] As a preferred embodiment of the present invention, the connecting frame is C-shaped, and the second gear, the second bevel gear, the first gear, and the first bevel gear are all located inside the connecting frame. The axes of the first bevel gear and the second bevel gear are perpendicular to each other, and the first bevel gear and the second bevel gear mesh.

[0007] In a preferred embodiment of the present invention, the second gear is located below the first rack, and the first rack is located behind the second gear.

[0008] As a preferred embodiment of the present invention, the bottom end of the connecting frame is provided with a positioning component, the positioning component includes a positioning frame, the positioning frame is fixedly installed at the bottom end of the connecting frame, a positioning ring is fixedly installed in the middle of the connecting pipe, and the positioning frame is movably connected to the upper and lower ends of the positioning ring.

[0009] As a preferred embodiment of the present invention, a square rod is fixedly installed at the bottom end of the positioning frame, and a fixing tube is fixedly installed at the rear end of the support frame, with the square rod slidably connected inside the fixing tube.

[0010] As a preferred embodiment of the present invention, a clamping assembly is fixedly installed at the bottom of the support frame. The clamping assembly includes a placement platform. There are two placement platforms, both of which are fixedly installed at the bottom of the placement platform. A rear baffle is fixedly installed on the rear side of the top of the two placement platforms. A front baffle is provided at the front end of the placement platform. A telescopic rod and a spring are fixedly installed at the rear end of the front baffle. The other end of the telescopic rod and the spring are fixed to the top of the placement platform.

[0011] As a preferred embodiment of the present invention, a feeding assembly is fixedly installed at the bottom end of the support frame. The feeding assembly includes an L-shaped tube, a push shaft is slidably connected to the front end of the L-shaped tube, a top block is fixedly installed at the top end of the push shaft, a telescopic rod is fixedly installed between the bottom end of the top block and the support frame, a push shaft is slidably connected to the rear end of the L-shaped tube, and a rack is embedded in the front end of the push shaft.

[0012] As a preferred embodiment of the present invention, a gear three is rotatably connected to the rear end of the support frame, the gear three meshes with a rack two, an extension frame is fixedly installed at the rear end of the connecting pipe, a push block is rotatably connected to the rear end of the extension frame, and an arc-shaped spring sheet and a limiting block are fixedly installed at the rear end of the extension frame.

[0013] As a preferred embodiment of the present invention, a pressure sensor is fixedly installed on the top of the placement platform.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, a hydraulic cylinder drives the connecting rod and the pressure head to move upward. When the second gear moves upward with the connecting pipe and contacts the first rack, the second gear rotates and drives the second bevel gear to rotate. Through the meshing of the second bevel gear and the first bevel gear, the first gear can be driven to rotate, thereby driving the gear ring and the connecting pipe to rotate, so that the connecting pipe and the connecting rod are unlocked. At this time, the pressure head falls downward under the action of gravity and hits the sill, simulating the instantaneous impact force on the sill, thus improving the detection effect.

[0015] 2. In this invention, when the connecting pipe is driven downward by the hydraulic cylinder, static pressure is applied to the sill. After the test is completed, the connecting pipe moves upward. At this time, the push block is blocked by the limit block and cannot rotate downward. This allows the gear three to rotate, press down the hydraulic oil in the L-shaped pipe, and push the push shaft one upward. The push shaft one moves upward and pushes the top block upward a certain distance. After the connecting pipe is impacted and tested, when the connecting pipe moves upward and resets, the top block moves upward again a certain distance and pushes the sill out of the clamp assembly, thus achieving the effect of automatic unloading. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the material cutting assembly of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle; Figure 5 For the present invention Figure 2 Enlarged view of point C in the middle; Figure 6 This is a schematic diagram of the connection of the structure unlocking component of the present invention; Figure 7 This is a schematic diagram of the connection of the extension frame of the present invention; Figure 8 For the present invention Figure 7 Enlarged diagram of point D in the middle.

[0017] In the diagram: 1. Support frame; 2. Pressure application assembly; 21. Hydraulic cylinder; 22. Connecting rod; 23. Connecting pipe; 24. Pressure head; 25. Thread; 3. Unlocking assembly; 31. Connecting frame; 32. Gear 1; 33. Bevel gear 1; 34. Gear 2; 35. Bevel gear 2; 36. Gear ring; 37. Rack 1; 4. Positioning assembly; 41. Positioning frame; 42. Positioning ring; 43. Fixing pipe; 44. Square rod; 5. Clamping assembly; 51. Placement platform; 52. Rear baffle; 53. Telescopic rod 1; 54. Spring; 55. Front baffle; 6. Unloading assembly; 61. L-shaped tube; 62. Push shaft 1; 63. Push shaft 2; 64. Rack 2; 65. Gear 3; 66. Extension frame; 67. Push block; 68. Arc-shaped spring sheet; 69. Limiting block; 7. Pressure sensor; 8. Top block; 9. Telescopic rod 2. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 8 As shown, the present invention provides an elevator sill load-bearing testing device, including a support frame 1, a pressure application component 2 fixedly installed at the top of the support frame 1, and an unlocking component 3 provided at the right end of the pressure application component 2; The pressure application component 2 includes a connecting rod 22, which is movably connected to the top of the support frame 1. A connecting tube 23 is movably connected to the surface of the connecting rod 22. A pressure head 24 is fixedly installed at the bottom of the connecting tube 23. Threads 25 are provided at the top of both the connecting rod 22 and the connecting tube 23. The unlocking component 3 includes a connecting frame 31, with a gear 32 and a gear 34 rotatably connected to the bottom and right ends of the connecting frame 31, respectively. A bevel gear 33 and a bevel gear 35 are fixedly installed on the top of the gear 32 and the left end of the gear 34, respectively. A toothed ring 36 is fixedly installed on the surface of the connecting tube 23, and a rack 37 is fixedly installed on the top of the support frame 1.

[0020] The hydraulic cylinder 21 drives the connecting rod 22 and the pressure head 24 to move upward. When the gear 24 moves upward with the connecting pipe 23 and contacts the rack 37, the gear 24 rotates and drives the bevel gear 25 to rotate. Through the meshing of the bevel gear 25 and the bevel gear 33, the gear 1 can be driven to rotate, thereby driving the gear ring 36 and the connecting pipe 23 to rotate, so that the connecting pipe 23 and the connecting rod 22 are unlocked. At this time, the pressure head 24 falls downward under the action of gravity and hits the sill, simulating the instantaneous impact force on the sill. Combined with the original static pressure test, the dual-mode test can simultaneously obtain the "static rated performance" and "dynamic impact resistance performance". The test results are more in line with the actual use scenario of the sill and improve the test effect.

[0021] The pressure application component 2 also includes a hydraulic cylinder 21, which is fixedly installed on the top of the support frame 1. A connecting rod 22 is fixedly installed on the output end of the hydraulic cylinder 21, and the threads 25 on the top of the connecting rod 22 and the connecting pipe 23 mesh with each other.

[0022] The hydraulic cylinder 21 drives the connecting pipe 23 and the pressure head 24 to move up and down as a whole, and the connecting rod 22 and the connecting pipe 23 are engaged by the thread 25. The connecting rod 22 and the connecting pipe 23 can be separated by rotating the connecting pipe 23.

[0023] Among them, the connecting frame 31 is C-shaped, and gear 2 34, bevel gear 2 35, gear 1 32 and bevel gear 1 33 are all located inside the connecting frame 31. The axes of bevel gear 1 33 and bevel gear 2 35 are perpendicular to each other, and bevel gear 1 33 and bevel gear 2 35 mesh.

[0024] By setting up a connecting frame 31, the second gear 34, the second bevel gear 35, the first gear 32, and the first bevel gear 33 are supported and protected. The meshing between the second bevel gear 35 and the first bevel gear 33 can drive the first bevel gear 33 to rotate when the second bevel gear 35 is rotated, and there is no contact between the second gear 34 and the first gear 32.

[0025] Among them, gear 2 34 is located below rack 1 37, and rack 1 37 is located behind gear 2 34.

[0026] When gear 2 34 moves upward and contacts rack 1 37, gear 2 34 will rotate because rack 1 37 is fixed.

[0027] The bottom end of the connecting frame 31 is provided with a positioning component 4, which includes a positioning frame 41. The positioning frame 41 is fixedly installed at the bottom end of the connecting frame 31, and a positioning ring 42 is fixedly installed in the middle of the connecting pipe 23. The positioning frame 41 is movably connected to the upper and lower ends of the positioning ring 42.

[0028] The positioning frame 41 is clamped at the upper and lower ends of the positioning ring 42. When the connecting pipe 23 moves up and down, the positioning ring 42 will drive the positioning frame 41 to move up and down, thereby realizing that the positioning frame 41 and the connecting frame 31 move up and down as a whole following the movement of the connecting pipe 23.

[0029] The bottom end of the positioning frame 41 is fixedly installed with a square rod 44, and the rear end of the support frame 1 is fixedly installed with a fixing tube 43. The square rod 44 is slidably connected inside the fixing tube 43.

[0030] By sliding the square rod 44 inside the fixed tube 43, the connecting frame 31 is kept at the right end of the connecting tube 23 during the up and down movement of the connecting tube 23, and will not rotate in the horizontal direction, thus ensuring that the gear 2 34 can smoothly mesh with the rack 1 37 when it moves up.

[0031] The support frame 1 is fixedly installed with a clamp assembly 5 at its bottom end. The clamp assembly 5 includes a placement platform 51. There are two placement platforms 51, both of which are fixedly installed at the bottom end of the placement platform 51. A rear baffle 52 is fixedly installed on the rear side of the top of the two placement platforms 51. A front baffle 55 is provided at the front end of the placement platform 51. A telescopic rod 53 and a spring 54 are fixedly installed at the rear end of the front baffle 55. The other end of the telescopic rod 53 and the spring 54 are fixed to the top end of the placement platform 51.

[0032] The sill is supported by a placement platform 51, the rear baffle 52 is used to limit the rear side of the sill, and the front baffle 55, which can move back and forth, is used to accommodate sills of different sizes. In use, the sill is tilted so that the front end of the sill is placed against the rear end of the front baffle 55. Then the sill is pushed forward and the spring 54 is pulled out. At this time, the spring 54 generates elasticity and clamps the sill until the rear end of the sill can be placed at the front end of the rear baffle 52. The sill is then pressed down so that it contacts the placement platform 51.

[0033] Among them, the bottom end of the support frame 1 is fixedly installed with a feeding component 6, which includes an L-shaped tube 61. The front end of the L-shaped tube 61 is slidably connected to a push shaft 62. The top end of the push shaft 62 is fixedly installed with a top block 8. The bottom end of the top block 8 is fixedly installed with a telescopic rod 9 between the support frame 1 and the rear end of the L-shaped tube 61 is slidably connected to a push shaft 63. The front end of the push shaft 63 is embedded with a rack 64.

[0034] When rack 2 64 moves downward, it can press down the hydraulic oil in L-shaped tube 61 and push push shaft 1 62 upward, so that push shaft 1 62 moves upward and pushes top block 8 upward. During this process, the extension and retraction of telescopic rod 2 9 positions and supports the front end of top block 8 to prevent top block 8 from tilting.

[0035] Among them, the rear end of the support frame 1 is rotatably connected to a gear 65, which meshes with a rack 64. The rear end of the connecting pipe 23 is fixedly installed with an extension frame 66, the rear end of the extension frame 66 is rotatably connected to a push block 67, and the rear end of the extension frame 66 is fixedly installed with an arc-shaped spring plate 68 and a limiting block 69.

[0036] The other end of the arc-shaped spring plate 68 is fixedly connected to the push block 67. The arc-shaped spring plate 68 and the limiting block 69 are located on the upper and lower sides of the push block 67, respectively. When the extension frame 66 moves down with the connecting tube 23, the push block 67 contacts the gear 3 65, and the push block 67 will rotate upward, compressing the push block 67 and disengaging from the gear 3 65. As a result, the gear 3 65 will not rotate. When the extension frame 66 moves up, the push block 67 cannot rotate downward due to the obstruction of the limiting block 69, which can then push the gear 3 65 to rotate.

[0037] A pressure sensor 7 is fixedly installed on the top of the placement platform 51.

[0038] By setting up pressure sensor 7, the pressure experienced during the sill test is detected.

[0039] Working principle and usage process of this invention: First, fix the sill: tilt the sill and place the front end of the sill against the rear end of the front baffle 55. Then push the sill forward and pull out the spring 54 until the rear end of the sill can be placed at the front end of the rear baffle 52. Press the sill down to make it contact the placement platform 51. After releasing the sill, the spring 54 is stretched and generates elasticity, which in turn applies a backward force to the front baffle 55 to clamp and position the sill. In the initial state, gear 2 34 is located below rack 1 37; Static pressure test: Hydraulic cylinder 21 drives connecting rod 22 to move down. At this time, connecting pipe 23 is engaged and fixedly connected with connecting rod 22, so it can drive pressure head 24 to move down and press on the sill. Pressure sensor 7 detects the applied pressure. After the test is completed, connecting pipe 23 and pressure head 24 are driven to move up by hydraulic cylinder 21. At this time, push block 67 is blocked by limit block 69 and cannot rotate down. Then it can push gear 3 65 to rotate, press down the hydraulic oil in L-shaped pipe 61 and push push shaft 1 62 up, so that push shaft 1 62 moves up and pushes top block 8 up a distance. At this time, top block 8 does not contact the sill. Instantaneous impact detection: The connecting pipe 23 is driven upward by the hydraulic cylinder 21. When the second gear 34 meshes with the first rack 37, the second gear 34 will rotate, driving the second bevel gear 35 to rotate, which in turn drives the first bevel gear 33 and the first gear 32 to rotate. Finally, the gear ring 36 drives the connecting pipe 23 to rotate, unlocking the connecting pipe 23 and the connecting rod 22. At this time, the connecting pipe 23 loses its fixation to the connecting rod 22 and falls downward, impacting the sill instantly. The force of the instantaneous impact detection is related to the weight of the pressure head 24 and the distance the pressure head 24 moves downward. In this embodiment, a 10kg pressure head 24 is used to drop 25cm to provide 25J of impact energy to simulate the heavy object falling under extreme working conditions. In actual implementation, pressure heads 24 of different weights can also be selected to provide different impact energies to meet the detection requirements of various working conditions. After the inspection is completed, the hydraulic cylinder 21 drives the connecting rod 22 to move down. When the connecting rod 22 and the thread 25 on the connecting pipe 23 come into contact, the connecting rod 22 is slowly moved down by the hydraulic cylinder 21. The operator rotates the connecting pipe 23 to connect the connecting rod 22 to the connecting pipe 23. Then the hydraulic cylinder 21 drives the connecting pipe 23 to move up again. During the process, the top block 8 moves up again and comes into contact with the sill, pushing the sill upwards out of the clamp assembly 5 and feeding material along the slope of the front end of the clamp assembly 5. After feeding the material, press the top block 8 down to reset it.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator sill load-bearing testing device, comprising a support frame (1), characterized in that: A pressure-applying component (2) is fixedly installed at the top of the support frame (1), and an unlocking component (3) is provided at the right end of the pressure-applying component (2). The pressure application component (2) includes a connecting rod (22), which is movably connected to the top of the support frame (1). A connecting pipe (23) is movably connected to the surface of the connecting rod (22). A pressure head (24) is fixedly installed at the bottom of the connecting pipe (23). Threads (25) are provided at the top of both the connecting rod (22) and the connecting pipe (23). The unlocking component (3) includes a connecting frame (31), with a gear 1 (32) and a gear 2 (34) rotatably connected to the bottom and right ends of the connecting frame (31), respectively. A bevel gear 1 (33) and a bevel gear 2 (35) are fixedly installed on the top end of the gear 1 (32) and the left end of the gear 2 (34), respectively. A toothed ring (36) is fixedly installed on the surface of the connecting tube (23), and a rack 1 (37) is fixedly installed on the top end of the support frame (1).

2. The elevator sill load-bearing testing device according to claim 1, characterized in that: The pressure application component (2) also includes a hydraulic cylinder (21), which is fixedly installed on the top of the support frame (1). The connecting rod (22) is fixedly installed on the output end of the hydraulic cylinder (21), and the threads (25) at the top of the connecting rod (22) and the connecting pipe (23) mesh with each other.

3. The elevator sill load-bearing testing device according to claim 1, characterized in that: The connecting frame (31) is C-shaped. The second gear (34), the second bevel gear (35), the first gear (32) and the first bevel gear (33) are all located inside the connecting frame (31). The axes of the first bevel gear (33) and the second bevel gear (35) are perpendicular to each other, and the first bevel gear (33) and the second bevel gear (35) mesh.

4. The elevator sill load-bearing testing device according to claim 1, characterized in that: The second gear (34) is located below the first rack (37), and the first rack (37) is located behind the second gear (34).

5. The elevator sill load-bearing testing device according to claim 1, characterized in that: The bottom end of the connecting frame (31) is provided with a positioning component (4), the positioning component (4) includes a positioning frame (41), the positioning frame (41) is fixedly installed at the bottom end of the connecting frame (31), and a positioning ring (42) is fixedly installed in the middle of the connecting pipe (23). The positioning frame (41) is movably connected to the upper and lower ends of the positioning ring (42).

6. The elevator sill load-bearing testing device according to claim 5, characterized in that: A square rod (44) is fixedly installed at the bottom of the positioning frame (41), and a fixing tube (43) is fixedly installed at the rear end of the support frame (1). The square rod (44) is slidably connected inside the fixing tube (43).

7. The elevator sill load-bearing testing device according to claim 1, characterized in that: The bottom end of the support frame (1) is fixedly installed with a clamp assembly (5). The clamp assembly (5) includes a placement platform (51). There are two placement platforms (51), both of which are fixedly installed at the bottom end of the placement platform (51). A rear baffle (52) is fixedly installed on the rear side of the top of the two placement platforms (51). A front baffle (55) is provided at the front end of the placement platform (51). A telescopic rod (53) and a spring (54) are fixedly installed at the rear end of the front baffle (55). The other end of the telescopic rod (53) and the spring (54) is fixed to the top end of the placement platform (51).

8. The elevator sill load-bearing testing device according to claim 1, characterized in that: The bottom end of the support frame (1) is fixedly installed with a feeding assembly (6). The feeding assembly (6) includes an L-shaped tube (61). The front end of the L-shaped tube (61) is slidably connected to a push shaft (62). The top end of the push shaft (62) is fixedly installed with a top block (8). The bottom end of the top block (8) is fixedly installed with a telescopic rod (9) between it and the support frame (1). The rear end of the L-shaped tube (61) is slidably connected to a push shaft (63). The front end of the push shaft (63) is embedded with a rack (64).

9. The elevator sill load-bearing testing device according to claim 8, characterized in that: The rear end of the support frame (1) is rotatably connected to a gear three (65), which meshes with a rack two (64). The rear end of the connecting pipe (23) is fixedly installed with an extension frame (66), and the rear end of the extension frame (66) is rotatably connected to a push block (67). The rear end of the extension frame (66) is fixedly installed with an arc-shaped spring sheet (68) and a limiting block (69).

10. The elevator sill load-bearing testing device according to claim 7, characterized in that: A pressure sensor (7) is fixedly installed on the top of the placement platform (51).

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