Lift shaft partition plate impact test frame

Abstract

The invention belongs to the technical field of impact testing, and particularly relates to an elevator shaft partition plate impact testing frame which comprises a bottom frame, the upper side wall of the bottom frame is fixedly connected with a supporting frame, the supporting frame is of a U-shaped structure, the left side wall of the supporting frame is connected with a control cabinet, and the upper end of the supporting frame is fixedly connected with a top frame. Two protection plates are rotationally connected between the bottom frame and the top frame, two vertical plates are fixedly connected to the upper side wall of the top frame in a front-back symmetry mode, and the same rotating rod is rotationally connected between the two vertical plates through a rotating shaft. According to the invention, when the pendulum bob is used for carrying out the impact test on the elevator shaft partition plate, the problem of data distortion caused by the rebound of the pendulum bob can be avoided, and the impact of the pendulum bob on the damping shock absorber can be reduced, so that the accuracy of test data is ensured, and the service life of the damping shock absorber is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of impact testing technology, and in particular relates to an impact testing frame for elevator shaft partitions. Background Technology

[0002] With economic development, elevators are becoming increasingly common in various fields, and the safety performance of elevators is receiving more and more attention from customers. Various manufacturers conduct pendulum impact tests on elevator shaft partitions according to requirements to ensure that the safety performance of the shaft partitions meets the standards, preventing passengers from accidentally hitting or being hit by unpredictable impacts while waiting for the elevator, which could damage the elevator partitions, affect the operation of the elevator, and cause safety accidents. For example, an elevator shaft partition impact test frame is proposed in patent publication number CN212514068U.

[0003] In the pendulum impact test of the elevator shaft partition, the pendulum needs to be raised to a certain height and then released to impact the partition. However, after the impact, the remaining energy of the pendulum is not effectively dissipated and still retains the kinetic energy of the reverse motion, which leads to a rebound phenomenon. The rebounding pendulum will have a secondary impact on the partition, which directly leads to the distortion of the test results. To address this issue, some testing equipment incorporates dampers and other structures to limit the pendulum's rebound. However, in practical applications, if the kinetic energy of the pendulum impact is too high, it can damage the internal components of the damper, thereby weakening its ability to limit the pendulum's rebound and affecting the stability of the test.

[0004] To address this issue, an elevator shaft partition impact test frame is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing an elevator shaft partition impact test frame.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an elevator shaft partition impact test frame, comprising a base frame, a support frame fixedly connected to the upper side wall of the base frame, the support frame having a U-shaped structure, a control cabinet connected to the left side wall of the support frame, a top frame fixedly connected to the upper end of the support frame, two protective plates rotatably connected between the base frame and the top frame, two vertical plates symmetrically fixedly connected to the upper side wall of the top frame, the two vertical plates being rotatably connected to the same rotating rod via a rotating shaft, a pendulum fixedly connected to the lower end of the rotating rod, and further comprising: Mounting components are provided on the upper side wall of the base frame for mounting and fixing the partition. The traction assembly, located on the upper side wall of the top frame, is used to drive the movement of the pendulum. A limiting component, disposed on the side wall of the pendulum, is used to reduce the height of the pendulum rebound.

[0007] Preferably, the mounting assembly includes a mounting plate, which is fixed to the upper side wall of the base frame by bolts. Two fixing brackets are fixedly connected to the right side wall of the mounting plate. Both fixing brackets are inverted L-shaped structures. Multiple positioning bolts are threaded to the side wall of the fixing brackets. A partition is located between the two fixing brackets. A vibration sensor is fixedly connected to the left side wall of the mounting plate. The vibration sensor is electrically connected to the control cabinet.

[0008] Preferably, the traction assembly includes a traction electric push rod fixedly connected to the upper side wall of the top frame, a traction frame fixedly connected to the moving end of the traction electric push rod, a locking electric push rod fixedly connected to the front side wall of the traction frame, a locking pin fixedly connected to the moving end of the locking electric push rod, a locking plate fixedly connected to the upper end of the rotating rod, a through opening on the side wall of the top frame that matches the locking plate, and a sliding opening on the side wall of the locking plate that matches the locking pin.

[0009] Preferably, the limiting component includes a connecting cover fixedly sleeved on the right end of the pendulum, a connecting seat fixedly connected to the right side wall of the connecting cover, a plurality of annularly distributed connecting frames fixedly connected to the right side wall of the connecting seat, an outer expansion plate rotatably connected to the inner wall of the connecting frame, a column connected to the center of the right side wall of the connecting seat, a micro-force spring connected between the plurality of outer expansion plates and the column, a common wind resistance cloth fixedly connected between two adjacent outer expansion plates, the wind resistance cloth having a fan-shaped structure, and a limit electric push rod fixedly connected to the upper inner wall of the top frame via a bracket, the moving end of the limit electric push rod being fixedly connected to a damping shock absorber.

[0010] Preferably, a linear module is fixedly connected to the right side wall of the mounting plate, a movable frame is fixedly connected to the movable end of the linear module, a vertical electric push rod is fixedly connected to the upper side wall of the movable frame, a horizontal electric push rod is connected to the movable end of the vertical electric push rod via a connecting sleeve, a detection plate is fixedly connected to the movable end of the horizontal electric push rod, a plurality of detection cylinders are longitudinally distributed on the left side wall of the detection plate, a detection pin is movably inserted into the left end of the detection cylinder, a ball is fixedly connected to the left end of the detection pin, a movable seat is fixedly connected to the right end of the detection pin, a tension sensor is fixedly connected to the right inner wall of the detection cylinder, the detection end of the tension sensor is connected to the movable seat, a support ring is fixedly connected to the inner wall of the detection cylinder, and a spring is fixedly connected between the support ring and the movable seat.

[0011] Preferably, the side wall of the protective plate is rotatably connected to a limiting plate, and the front and rear sides of the support frame are fixedly connected to limiting frames.

[0012] Preferably, an angle plate is fixedly connected to the upper inner wall of the top frame, and the angle plate is located behind the rotating rod.

[0013] Preferably, a protective net is fixedly connected to the inner wall of the support frame, and the protective net is located on the left side of the mounting plate.

[0014] Compared with existing technologies, the advantages of an elevator shaft partition impact test frame are: 1. By setting the limiting components, when using a pendulum to conduct an impact test on the elevator shaft partition, the problem of data distortion caused by pendulum rebound can be avoided. At the same time, the impact of the pendulum on the damping shock absorber can be reduced, thereby ensuring the accuracy of the test data and extending the service life of the damping shock absorber.

[0015] 2. By using a set linear module, moving frame, vertical electric push rod, horizontal electric push rod, detection plate, detection cylinder, detection pin, ball bearing, moving seat, tension sensor, and support ring, after the impact test of the metal partition is completed using a pendulum, the degree of indentation on the surface of the metal partition can be automatically detected when the metal partition does not break. This eliminates the need for operators to use other detection equipment, making it convenient for operators to obtain test data.

[0016] 3. By using the angle plate and traction components, when conducting impact tests on elevator shaft partitions with a pendulum, the operator can be assisted in controlling the pendulum to rise to the set angle, further ensuring the accuracy of the test results. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of an elevator shaft partition impact test frame provided by the present invention; Figure 2 yes Figure 1 Front sectional view; Figure 3 This is a schematic diagram of the installation components in an elevator shaft partition impact test frame provided by the present invention; Figure 4 This is a schematic diagram of the internal structure of the testing cylinder in an elevator shaft partition impact test frame provided by the present invention; Figure 5 This is a schematic diagram of the structure of the limiting component in an elevator shaft partition impact test frame provided by the present invention; Figure 6 This is a schematic diagram of the unfolded structure of multiple outward expansion plates in an elevator shaft partition impact test frame provided by the present invention; Figure 7 This is a schematic diagram of the traction component in an elevator shaft partition impact test frame provided by the present invention.

[0018] In the diagram: 1. Base frame, 2. Support frame, 3. Control cabinet, 4. Top frame, 5. Protective plate, 6. Vertical plate, 7. Rotating rod, 8. Pendulum, 9. Mounting assembly, 91. Mounting plate, 92. Fixing frame, 10. Positioning bolt, 11. Vibration sensor, 12. Traction assembly, 121. Pulling electric push rod, 122. Pulling frame, 13. Locking electric push rod, 14. Locking pin, 15. Locking plate, 16. Sliding port, 17. Limiting assembly, 171. Connecting cover, 172. Connecting seat, 18. Connecting frame, 19. Outer expansion plate, 20. Column, 21. Wind resistance cloth, 22. Limiting electric push rod, 23. Damping shock absorber, 24. Linear module, 25. Moving frame, 26. Vertical electric push rod, 27. Horizontal electric push rod, 28. Detection plate, 29. Detection cylinder, 30. Detection pin, 31. Ball bearing, 32. Moving seat, 33. Tension sensor, 34. Support ring, 35. Limiting plate, 36. Limiting frame, 37. Angle plate, 38. Protective net. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] like Figures 1-7 As shown, an elevator shaft partition impact test frame includes a base frame 1, a support frame 2 fixedly connected to the upper side wall of the base frame 1, the support frame 2 having a U-shaped structure, a control cabinet 3 connected to the left side wall of the support frame 2, a top frame 4 fixedly connected to the upper end of the support frame 2, two protective plates 5 rotatably connected between the base frame 1 and the top frame 4, a limit plate 35 rotatably connected to the side wall of the protective plate 5, limit frames 36 fixedly connected to both the front and rear sides of the support frame 2, two vertical plates 6 symmetrically fixedly connected to the front and rear of the upper side wall of the top frame 4, the two vertical plates 6 being rotatably connected to the same rotating rod 7 via a rotating shaft, an angle plate 37 fixedly connected to the upper inner wall of the top frame 4, the angle plate 37 being located behind the rotating rod 7, a pendulum 8 fixedly connected to the lower end of the rotating rod 7, and further includes: Mounting assembly 9, located on the upper side wall of base frame 1, is used for mounting and fixing the partition. Mounting assembly 9 includes mounting plate 91, which is fixed to the upper side wall of base frame 1 by bolts. Two fixing brackets 92 are fixedly connected to the right side wall of mounting plate 91. Both fixing brackets 92 are inverted L-shaped structures. Multiple positioning bolts 10 are threadedly connected to the side wall of fixing bracket 92. The partition is located between the two fixing brackets 92. A vibration sensor 11 is fixedly connected to the left side wall of mounting plate 91. The vibration sensor 11 is electrically connected to control cabinet 3. A protective net 38 is fixedly connected to the inner wall of support frame 2. The protective net 38 is located on the left side of mounting plate 91 and can fix the elevator shaft partition. The traction assembly 12 is installed on the upper side wall of the top frame 4 and is used to drive the movement of the pendulum 8. The traction assembly 12 includes a traction electric push rod 121 fixedly connected to the upper side wall of the top frame 4. The moving end of the traction electric push rod 121 is fixedly connected to a traction frame 122. The front side wall of the traction frame 122 is fixedly connected to a locking electric push rod 13. The moving end of the locking electric push rod 13 is fixedly connected to a locking pin 14. The upper end of the rotating rod 7 is fixedly connected to a locking plate 15. The side wall of the top frame 4 has an opening that matches the locking plate 15. The side wall of the locking plate 15 has a sliding opening 16 that matches the locking pin 14. Through this assembly, the height of the pendulum 8 can be adjusted. A limiting component 17, disposed on the side wall of the pendulum 8, is used to reduce the height of the pendulum 8 during rebound. The limiting component 17 includes a connecting cover 171 fixedly sleeved on the right end of the pendulum 8. A connecting seat 172 is fixedly connected to the right side wall of the connecting cover 171. Multiple annularly distributed connecting frames 18 are fixedly connected to the right side wall of the connecting seat 172. An outer expansion plate 19 is rotatably connected to the inner wall of the connecting frame 18. A column 20 is connected to the center of the right side wall of the connecting seat 172. A micro-force spring is connected between each of the multiple outer expansion plates 19 and the column 20. Adjacent outer expansion plates 19... The same wind resistance cloth 21 is fixedly connected between the 9. The wind resistance cloth 21 has a fan-shaped structure. The upper inner wall of the top frame 4 is fixedly connected to the limit electric push rod 22 through the bracket. The moving end of the limit electric push rod 22 is fixedly connected to the damping shock absorber 23. Through this component, when the pendulum 8 is used to conduct an impact test on the elevator shaft partition, the problem of data distortion caused by the rebound of the pendulum 8 can be avoided. At the same time, the impact of the pendulum 8 on the damping shock absorber 23 can be reduced. Thus, while ensuring the accuracy of the test data, the service life of the damping shock absorber 23 is also extended.

[0021] A linear module 24 is fixedly connected to the right side wall of the mounting plate 91. A movable frame 25 is fixedly connected to the movable end of the linear module 24. A vertical electric push rod 26 is fixedly connected to the upper side wall of the movable frame 25. A horizontal electric push rod 27 is connected to the movable end of the vertical electric push rod 26 via a connecting sleeve. A detection plate 28 is fixedly connected to the movable end of the horizontal electric push rod 27. Multiple detection cylinders 29 are longitudinally distributed on the left side wall of the detection plate 28. A detection pin 30 is movably inserted into the left end of the detection cylinder 29. A ball bearing 31 is fixedly connected to the left end of the detection pin 30. A movable seat 32 is fixedly connected to the right end, and a tension sensor 33 is fixedly connected to the inner wall of the right side of the detection cylinder 29. The detection end of the tension sensor 33 is connected to the movable seat 32. A support ring 34 is fixedly connected to the inner wall of the detection cylinder 29, and a spring is fixedly connected between the support ring 34 and the movable seat 32. After the impact test of the metal partition is completed by the pendulum 8, if the metal partition does not break, the degree of indentation on the surface of the metal partition can be automatically detected without the need for the operator to use other detection equipment, which makes it convenient for the operator to obtain test data.

[0022] The operating principle of this invention is explained as follows: When an impact test is required on an elevator shaft partition, the operator first places the partition to be tested between two fixed frames 92, and then fixes the partition using positioning bolts 10. Next, the mounting plate 91 is installed on the base frame 1 at a suitable position using bolts, and the protective plate 5 is closed. Then, the operator sends an electrical signal to the control cabinet 3 through the touch screen on the surface of the control cabinet 3. After receiving the electrical signal, the control cabinet 3 will control the pulling electric push rod 121 to work, and the pulling electric push rod 121 will drive the pulling frame 122 to move to the left. The pulling frame 122, through the cooperation of the locking pin 14 and the sliding port 16, drives the locking plate 15 to rotate to the left. The locking plate 15 will drive the upper end of the rotating rod 7 to rotate to the left by a certain angle. The lower end of the rotating rod 7 will drive the pendulum 8 to rotate to the right to the set height. The operator can judge whether the placement height of the pendulum 8 is correct through the angle plate 37 behind the rotating rod 7. After confirming that the height of the pendulum 8 is correct, the operator can send an electrical signal to the control cabinet 3. After receiving the electrical signal, the control cabinet 3 will control the locking electric push rod 13 to work. The locking electric push rod 13 will drive the locking pin. After the sliding port 16 separates from the pendulum 8, the pendulum 8 will rotate downwards along the hinge of the rotating rod 7 under the action of gravity and hit the partition. When the remaining energy of the pendulum 8 is not effectively dissipated, the pendulum 8 will rebound to the right. During the rebound to the right, the multiple fan-shaped wind resistance cloths 21 located on the right side of the pendulum 8 will drive the outer expansion plate 19 to overcome the tension of the micro-spring and rotate away from the column 20 under the action of air resistance. This will cause the multiple outer expansion plates 19 to unfold and form a trumpet-shaped structure together with the wind resistance cloths 21, thereby increasing the resistance encountered by the pendulum 8 when rotating to the right and reducing the energy of the pendulum 8. When the pendulum 8 impacts the partition and mounting plate 91, the vibration sensor 11 located on the side wall of the mounting plate 91 will detect this situation. The vibration sensor 11 will then control the limit electric push rod 22 to work immediately through the control cabinet 3. The limit electric push rod 22 will drive the damping shock absorber 23 to move towards the rotating rod 7 to the set position. When the pendulum 8 drives the rotating rod 7 to rotate to the right to the highest point and then rotates to the left again, the damping shock absorber 23 will block the rotating rod 7 before the pendulum 8 contacts the partition, so as to avoid the pendulum 8 and the partition from making secondary contact and causing data distortion. When the partition is made of metal and the operator observes that it has not been damaged by impact, the operator can send an electrical signal to control cabinet 3. Upon receiving the signal, control cabinet 3 will use traction component 12 to pull pendulum 8 to rotate to the right to a set height. Then, control cabinet 3 will control linear module 24 to operate. Linear module 24, through moving frame 25, will move components such as vertical electric push rod 26, horizontal electric push rod 27, and detection plate 28 to a set position closer to the partition, so that multiple detection pins 30 are located on the right side of the partition. Then, control cabinet 3... The horizontal electric push rod 27 is controlled to operate, which drives the detection plate 28, multiple detection cylinders 29, and multiple detection pins 30 to move closer to the partition. This causes the ball bearing 31 at the left end of the detection pin 30 to contact the right side wall of the partition. After the ball bearing 31 contacts the partition, it drives the moving seat 32 to move to the right relative to the detection cylinder 29 via the detection pin 30. The tension sensor 33 located inside the detection cylinder 29 will detect that the tension applied by the moving seat 32 has decreased. The control cabinet 3 detects that the tension applied by the moving seat 32 has become zero through the tension sensor 33. Then, the horizontal electric push rod 27 will stop working, and the linear module 24 will continue to move the detection cylinder 29 and other components from back to front. When the ball 31 moves to the recessed area on the surface of the partition, under the action of the spring force between the moving seat 32 and the support ring 34, the moving seat 32 will drive the ball 31 to the left to move into the recessed area through the detection pin 30. The moving seat 32 will continue to apply a pulling force to the tension sensor 33. The more severe the recessed area, the greater the pulling force applied by the moving seat 32 to the tension sensor 33. The control cabinet 3 can then detect the partition. The control cabinet 3 determines the degree of indentation, and after the ball 31 moves out of the indented area of ​​the partition, it controls the linear module 24 to stop working and controls the vertical electric push rod 26 to drive the horizontal electric push rod 27, the detection plate 28 and multiple detection cylinders 29 to move upward by one centimeter. Then, it controls the linear module 24 to work in reverse, so that the missed area between the two balls 31 can be detected. The above steps are repeated until the indented area of ​​the partition is fully detected. The control cabinet 3 will display the detection information on the surface touch screen for easy recording by the operator.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An elevator shaft partition impact test frame, comprising a base frame (1), a support frame (2) fixedly connected to the upper side wall of the base frame (1), the support frame (2) having a U-shaped structure, a control cabinet (3) connected to the left side wall of the support frame (2), a top frame (4) fixedly connected to the upper end of the support frame (2), two protective plates (5) rotatably connected between the base frame (1) and the top frame (4), two vertical plates (6) symmetrically fixedly connected to the upper side wall of the top frame (4), the two vertical plates (6) being rotatably connected to the same rotating rod (7) via a rotating shaft, and a pendulum (8) fixedly connected to the lower end of the rotating rod (7), characterized in that, Also includes: Mounting assembly (9) is provided on the upper side wall of the base frame (1) for mounting and fixing the partition; The traction assembly (12) is set on the upper side wall of the top frame (4) and is used to drive the movement of the pendulum (8); A limiting component (17) is provided on the side wall of the pendulum (8) to reduce the height of the pendulum (8) when it rebounds.

2. The elevator shaft partition impact test frame according to claim 1, characterized in that, The mounting assembly (9) includes a mounting plate (91), which is fixed to the upper side wall of the base frame (1) by bolts. Two fixing brackets (92) are fixedly connected to the right side wall of the mounting plate (91). Both fixing brackets (92) are inverted L-shaped structures. Multiple positioning bolts (10) are threadedly connected to the side wall of the fixing brackets (92). A partition is located between the two fixing brackets (92). A vibration sensor (11) is fixedly connected to the left side wall of the mounting plate (91). The vibration sensor (11) is electrically connected to the control cabinet (3).

3. The elevator shaft partition impact test frame according to claim 1, characterized in that, The traction assembly (12) includes a traction electric push rod (121) fixedly connected to the upper side wall of the top frame (4). The moving end of the traction electric push rod (121) is fixedly connected to a traction frame (122). The front side wall of the traction frame (122) is fixedly connected to a locking electric push rod (13). The moving end of the locking electric push rod (13) is fixedly connected to a locking pin (14). The upper end of the rotating rod (7) is fixedly connected to a locking plate (15). The side wall of the top frame (4) has an opening that matches the locking plate (15). The side wall of the locking plate (15) has a sliding opening (16) that matches the locking pin (14).

4. The elevator shaft partition impact test frame according to claim 1, characterized in that, The limiting component (17) includes a connecting cover (171) fixedly sleeved on the right end of the pendulum (8). A connecting seat (172) is fixedly connected to the right side wall of the connecting cover (171). A plurality of ring-shaped connecting frames (18) are fixedly connected to the right side wall of the connecting seat (172). An outer expansion plate (19) is rotatably connected to the inner wall of the connecting frame (18). A column (20) is connected to the center of the right side wall of the connecting seat (172). A micro-force spring is connected between the plurality of outer expansion plates (19) and the column (20). The same wind resistance cloth (21) is fixedly connected between two adjacent outer expansion plates (19). The wind resistance cloth (21) has a fan-shaped structure. A limit electric push rod (22) is fixedly connected to the upper inner wall of the top frame (4) through a bracket. A damping shock absorber (23) is fixedly connected to the moving end of the limit electric push rod (22).

5. The elevator shaft partition impact test frame according to claim 2, characterized in that, A linear module (24) is fixedly connected to the right side wall of the mounting plate (91). A movable frame (25) is fixedly connected to the movable end of the linear module (24). A vertical electric push rod (26) is fixedly connected to the upper side wall of the movable frame (25). A horizontal electric push rod (27) is connected to the movable end of the vertical electric push rod (26) via a connecting sleeve. A detection plate (28) is fixedly connected to the movable end of the horizontal electric push rod (27). Multiple detection cylinders (29) are longitudinally distributed on the left side wall of the detection plate (28). A detection pin (30) is movably inserted into the left end of the measuring cylinder (29). A ball bearing (31) is fixedly connected to the left end of the detection pin (30). A movable seat (32) is fixedly connected to the right end of the detection pin (30). A tension sensor (33) is fixedly connected to the inner wall of the right side of the measuring cylinder (29). The detection end of the tension sensor (33) is connected to the movable seat (32). A support ring (34) is fixedly connected to the inner wall of the measuring cylinder (29). A spring is fixedly connected between the support ring (34) and the movable seat (32).

6. The elevator shaft partition impact test frame according to claim 1, characterized in that, The protective plate (5) is rotatably connected to a limiting plate (35), and the front and rear sides of the support frame (2) are fixedly connected to limiting frames (36).

7. The elevator shaft partition impact test frame according to claim 1, characterized in that, An angle plate (37) is fixedly connected to the upper inner wall of the top frame (4), and the angle plate (37) is located behind the rotating rod (7).

8. The elevator shaft partition impact test frame according to claim 1, characterized in that, The inner wall of the support frame (2) is fixedly connected with a protective net (38), which is located on the left side of the mounting plate (91).

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