Elevator door mechanical strength inspection device

Abstract

The utility model belongs to the technical field of elevator door inspection, and particularly relates to an elevator door mechanical strength inspection device which comprises a base, a fixed plate is fixedly installed on the top face of the base, a lifting frame is installed on one side of the fixed plate in a sliding mode, a sliding frame is installed on the inner side wall of the lifting frame in a sliding mode, and a rotating plate is arranged in the sliding frame. The lifting assembly is arranged in the fixing plate and used for driving the lifting frame to move up and down; the hammer ball is arranged on the bottom face of the rotating plate, a connecting base is fixedly installed on the bottom face of the sliding frame, a lifting rope is fixedly installed in the connecting base, and one end of the lifting rope is fixedly connected with one side of the hammer ball; the first motor is started to drive the rotating plate to rotate through the multiple assemblies, the falling angle and height of the hammer ball can be changed when the rotating plate rotates, and therefore the impact strength of the hammer ball can be adjusted, the same position of the next elevator door can be subjected to strength inspection, and the accuracy and convenience during batch inspection are ensured in the mode.

Description

Technical Field

[0001] This utility model belongs to the field of elevator door inspection technology, and in particular relates to an elevator door mechanical strength testing device. Background Technology

[0002] Elevators are necessities in people's daily lives. With the increase in the number of elevators in recent years and the large daily passenger flow, elevator inspection is particularly important to ensure people's safety. According to relevant elevator inspection standards, the mechanical strength of elevator doors needs to be tested, including the pendulum impact test. The pendulum impact test applies impact force to the elevator door with a pendulum to test whether the elevator door can withstand such stress and whether it can maintain structural integrity when subjected to external force, so as to ensure the safety of passengers.

[0003] Existing elevator door mechanical strength testing devices mostly have a simple pendulum position adjustment function when performing pendulum impact strength testing on elevator doors. However, when performing strength testing on the same position of the same batch of elevator doors, the fixing and release of the pendulum is mostly done manually. It is difficult for staff to ensure that the impact force generated by the pendulum is the same each time it is released, thus affecting the accuracy of the final test data. In addition, existing elevator door mechanical strength testing devices require multiple steps to fix the elevator door, which is cumbersome and affects work efficiency. In view of this, we propose an elevator door mechanical strength testing device. Utility Model Content

[0004] The purpose of this invention is to provide an elevator door mechanical strength testing device to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides an elevator door mechanical strength testing device, comprising:

[0006] A base, wherein a fixed plate is fixedly installed on the top surface of the base, a lifting frame is slidably installed on one side of the fixed plate, a sliding frame is slidably installed on the inner side wall of the lifting frame, and a rotating plate is provided inside the sliding frame;

[0007] A lifting assembly is disposed within a fixed plate and is used to drive the lifting frame to move up and down;

[0008] A hammer ball is set on the bottom surface of a rotating plate. A connecting seat is fixedly installed on the bottom surface of the sliding frame. A hanging rope is fixedly installed inside the connecting seat. One end of the hanging rope is fixedly connected to one side of the hammer ball.

[0009] A first rotating shaft is rotatably mounted on the inner wall of the sliding frame. A rotating plate is fixedly mounted on the outer wall of the first rotating shaft. A groove is provided on the bottom surface of the rotating plate, and the groove is adapted to the size of the hammer ball. A first cavity is provided inside the rotating plate, and the first cavity is connected to the groove. A collar is fixedly mounted on the outer wall of the hammer ball. A first electric push rod is fixedly mounted on the inner wall of the first cavity, and one end of the first electric push rod is inserted into the collar.

[0010] A placement slot is provided on the top surface of the base. Two sliding plates are slidably installed on the bottom surface of the placement slot, and clamps are fixedly installed on opposite sides of the two sliding plates.

[0011] An adjustment component is disposed within the base and is used to adjust the distance between the two sliding plates.

[0012] In the above technical solution, the lifting assembly further includes two first slide grooves, both of which are opened on one side of the fixed plate. A first rack is slidably installed in each of the two first slide grooves. One side of the two first racks is fixedly connected to one side of the lifting frame. A second cavity is opened in the fixed plate, which is connected to the two first slide grooves. A second rotating shaft is rotatably installed on the inner side wall of the second cavity. Two first gears are fixedly installed on the outer side wall of the second rotating shaft. The two first gears mesh with the two first racks respectively. A second motor is fixedly installed on one side of the fixed plate, and one end of the output shaft of the second motor is fixedly connected to one end of the second rotating shaft.

[0013] In the above technical solution, further, the adjusting component includes a third cavity, which is opened inside the base. A third rotating shaft is rotatably installed on the inner top surface of the third cavity. A second gear is fixedly installed on the outer wall of the third rotating shaft. Two second racks are slidably installed on the inner bottom surface of the third cavity. The two second racks are respectively located on the left and right sides of the second gear and mesh with the second gear. Two second sliding grooves are opened on the inner bottom surface of the placement groove. The two second sliding grooves are respectively located above the two second racks. A connecting block is fixedly installed on the top surface of each of the two second racks. The two connecting blocks are slidably connected to the two second sliding grooves respectively. The top surfaces of the two second sliding grooves are fixedly connected to the bottom surfaces of the two sliding plates respectively.

[0014] In the above technical solution, the adjustment component further includes a bottom groove, which is formed on the bottom surface of the base. The bottom end of the third rotating shaft extends through the inner bottom surface of the third cavity into the bottom groove. A third gear is fixedly installed at the bottom end of the third rotating shaft. A second electric push rod is fixedly installed on the inner side wall of the bottom groove. A third rack is fixedly installed at one end of the second electric push rod. The third rack meshes with the third gear.

[0015] In the above technical solution, further, a threaded rod is rotatably installed on the inner side wall of the lifting frame, a threaded hole is opened on one side of the sliding frame, the threaded hole is threadedly connected to the threaded rod, a third motor is fixedly installed on one side of the lifting frame, and one end of the output shaft of the third motor is fixedly connected to one end of the threaded rod.

[0016] In the above technical solution, one end of the first rotating shaft extends through the inner side wall of the sliding frame to the outside of the sliding frame. A first motor is fixedly installed on the top surface of the sliding frame. A pulley is fixedly installed on one end of the output shaft of the first motor and one end of the first rotating shaft. The same belt is provided on the two pulleys.

[0017] Furthermore, in the above technical solution, support blocks are fixedly installed at the four corners of the bottom surface of the base.

[0018] The beneficial effects of this utility model are:

[0019] 1. This elevator door mechanical strength testing device, before strength testing, places the elevator door to be tested in the placement slot, activates the second electric push rod to drive the third rack to slide, the third rack to slide, the third gear to rotate, the third shaft to rotate, and the third shaft to rotate, which in turn drives the second gear to rotate. Since the two second racks are on the left and right sides of the second gear respectively, when the second gear rotates, the two second racks slide in opposite directions. When the two second racks slide in opposite directions, the two connecting blocks slide in opposite directions, which in turn drives the two sliding plates to slide in opposite directions. When the sliding plate slides in opposite directions, the two clamping plates will also slide in opposite directions to adjust the distance between them and clamp and fix the two sides of the elevator door, improving the stability when the elevator door is tested for strength. If the height needs to be adjusted, the second motor is started to drive the second rotating shaft to rotate. When the second rotating shaft rotates, the two first gears will rotate along with it. When the two first gears rotate, they will drive the two first racks to slide up and down. When the two first racks slide up and down, the lifting frame will slide along with it. As a result, the sliding frame located on one side of the lifting frame and the hammer ball on the bottom surface of the sliding frame will slide up and down to adjust the height of the hammer ball, which has convenient advantages.

[0020] 2. This elevator door mechanical strength testing device, when performing strength tests on different positions of the elevator door, adjusts the lateral position by activating a third motor to drive a threaded rod to rotate. The rotation of the threaded rod causes the sliding frame to slide left and right, and the hammer ball located on the bottom of the sliding frame slides accordingly, thus adjusting the lateral position of the hammer ball. To facilitate batch testing of the same type of elevator doors in the same area, a first motor is activated to drive a first rotating shaft to rotate via a belt and two pulleys. The rotation of the first rotating shaft causes a rotating plate to rotate, changing the falling angle and height of the hammer ball, thus adjusting the impact force. At this time, a first electric push rod is activated to retract. When one end of the first electric push rod is withdrawn from the collar, the hammer ball falls and ultimately impacts the elevator door to perform the strength test. After the test, the hammer ball is simply placed back into the groove and limited by the first electric push rod, allowing for strength testing of the same position on the next elevator door. This method ensures accuracy and convenience during batch testing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a side view of the present invention.

[0023] Figure 3 This is a schematic diagram of the internal structure of the rotating plate of this utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the fixing plate of this utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 6 This is a schematic diagram of the internal structure of the base of this utility model.

[0027] The markings in the diagram are as follows:

[0028] 1. Base; 2. Fixing plate; 3. Lifting frame; 4. Sliding frame; 5. Rotating plate; 6. Hammer ball; 7. Connecting seat; 8. Suspension rope; 9. Groove; 10. Collar; 11. First cavity; 12. First electric push rod; 13. First rotating shaft; 14. First motor; 15. Pulley; 16. Belt; 17. Placement groove; 18. Sliding plate; 19. Clamping plate; 20. First slide groove; 21. First rack; 22. Second cavity; 23. Second rotating shaft; 24. First gear; 25. Second motor; 26. Threaded rod; 27. Threaded hole; 28. Third motor; 29. ​​Second slide groove; 30. Third cavity; 31. Third rotating shaft; 32. Second gear; 33. Second rack; 34. Connecting block; 35. Bottom groove; 36. Third gear; 37. Third rack; 38. Second electric push rod; 39. Support block. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0031] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0032] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0033] It should be noted that, in this application, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0034] Example 1:

[0035] Please see Figure 1-6 As shown in the figure, this embodiment provides a device for testing the mechanical strength of elevator doors.

[0036] include:

[0037] A base 1 has a fixed plate 2 fixedly mounted on its top surface. A lifting frame 3 is slidably mounted on one side of the fixed plate 2. A sliding frame 4 is slidably mounted on the inner side wall of the lifting frame 3, and a rotating plate 5 is installed inside the sliding frame 4. A lifting assembly is installed inside the fixed plate 2 and is used to drive the lifting frame 3 to move up and down. A hammer ball 6 is located on the bottom surface of the rotating plate 5. A connecting seat 7 is fixedly mounted on the bottom surface of the sliding frame 4, and a hanging rope 8 is fixedly mounted inside the connecting seat 7. One end of the hanging rope 8 is fixedly connected to one side of the hammer ball 6. A first rotating shaft 13 is rotatably mounted on the inner side wall of the sliding frame 4. The rotating plate 5 is fixedly mounted on the outer side wall of the first rotating shaft 13. A groove 9 is formed on the bottom surface of the rotating plate 5, which is adapted to the size of the hammer ball 6. A first cavity 11 is formed inside the rotating plate 5, which is connected to the groove 9. The outer side wall of the hammer ball 6 is fixed. A collar 10 is installed, and a first electric push rod 12 is fixedly installed on the inner wall of the first cavity 11. One end of the first electric push rod 12 is inserted into the collar 10. A placement groove 17 is opened on the top surface of the base 1. Two sliding plates 18 are slidably installed on the inner bottom surface of the placement groove 17. A clamping plate 19 is fixedly installed on the opposite side of each of the two sliding plates 18. An adjustment component is set inside the base 1 and is used to adjust the distance between the two sliding plates 18. When the first rotating shaft 13 rotates, it will drive the rotating plate 5 to rotate. When the rotating plate 5 rotates, the falling angle and height of the hammer ball 6 will change, thereby adjusting the impact force of the hammer ball 6. At this time, the first electric push rod 12 is activated to retract. When one end of the first electric push rod 12 is pulled out from the collar 10, the hammer ball 6 will fall and finally hit the elevator door to test its strength, which has the advantage of convenience.

[0038] Example 2:

[0039] This embodiment provides an elevator door mechanical strength testing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0040] The lifting assembly includes two first slide grooves 20, each located on one side of a fixed plate 2. A first rack 21 is slidably installed within each slide groove 20. One side of each rack 21 is fixedly connected to one side of the lifting frame 3. A second cavity 22 is provided within the fixed plate 2, communicating with the two first slide grooves 20. A second rotating shaft 23 is rotatably mounted on the inner wall of the second cavity 22. Two first gears 24 are fixedly installed on the outer wall of the second rotating shaft 23, meshing with the two first racks 21 respectively. A second motor 25 is fixedly installed on one side of plate 2. One end of the output shaft of the second motor 25 is fixedly connected to one end of the second rotating shaft 23. When the second motor 25 is started, it drives the second rotating shaft 23 to rotate. When the second rotating shaft 23 rotates, the two first gears 24 will rotate accordingly. When the two first gears 24 rotate, they will drive the two first racks 21 to slide up and down. When the two first racks 21 slide up and down, the lifting frame 3 will slide accordingly. As a result, the sliding frame 4 located on one side of the lifting frame 3 and the hammer ball 6 on the bottom surface of the sliding frame 4 will slide up and down accordingly, so as to adjust the height of the hammer ball 6, which has the advantage of convenience.

[0041] Example 3:

[0042] This embodiment provides an elevator door mechanical strength testing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] The adjustment assembly includes a third cavity 30, which is located within the base 1. A third rotating shaft 31 is rotatably mounted on the top surface of the third cavity 30. A second gear 32 is fixedly mounted on the outer wall of the third rotating shaft 31. Two second racks 33 are slidably mounted on the bottom surface of the third cavity 30, located on the left and right sides of the second gear 32 respectively, and mesh with the second gear 32. Two second sliding grooves 29 are formed on the bottom surface of the placement groove 17, located above the two second racks 33 respectively. Connecting blocks 34 are fixedly mounted on the top surfaces of the two second racks 33, and the two connecting blocks 34 respectively connect with the two second sliding grooves 33. The groove 29 is slidably connected, and the top surfaces of the two second grooves 29 are fixedly connected to the bottom surfaces of the two sliding plates 18 respectively. When the third rotating shaft 31 rotates, it will drive the second gear 32 to rotate. Since the two second racks 33 are on the left and right sides of the second gear 32 respectively, when the second gear 32 rotates, the two second racks 33 will slide in opposite directions. When the two second racks 33 slide in opposite directions, the two connecting blocks 34 will slide in opposite directions as well. When the two connecting blocks 34 slide in opposite directions, they will drive the two sliding plates 18 to slide in opposite directions. When the two sliding plates 18 slide in opposite directions, the two clamping plates 19 will slide in opposite directions as well, thereby adjusting the distance between them to clamp and fix the two sides of the elevator door, improving the stability when the elevator door is subjected to strength testing.

[0044] Example 4:

[0045] This embodiment provides an elevator door mechanical strength testing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] The adjustment assembly also includes a bottom groove 35, which is located on the bottom surface of the base 1. The bottom end of the third rotating shaft 31 extends through the bottom surface of the third cavity 30 into the bottom groove 35. A third gear 36 is fixedly installed at the bottom end of the third rotating shaft 31. A second electric push rod 38 is fixedly installed on the inner side wall of the bottom groove 35. A third rack 37 is fixedly installed at one end of the second electric push rod 38. The third rack 37 meshes with the third gear 36. When the second electric push rod 38 is activated, it drives the third rack 37 to slide. When the third rack 37 slides, it drives the third gear 36 to rotate. When the third gear 36 rotates, the third rotating shaft 31 will rotate accordingly, which has the advantage of convenience.

[0047] Example 5:

[0048] This embodiment provides an elevator door mechanical strength testing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] The inner wall of the lifting frame 3 is rotatably equipped with a threaded rod 26, and a threaded hole 27 is opened on one side of the sliding frame 4. The threaded hole 27 is threadedly connected to the threaded rod 26. A third motor 28 is fixedly installed on one side of the lifting frame 3. One end of the output shaft of the third motor 28 is fixedly connected to one end of the threaded rod 26. When the third motor 28 is started, it drives the threaded rod 26 to rotate. When the threaded rod 26 rotates, it will drive the sliding frame 4 to slide left and right. When the sliding frame 4 slides left and right, the hammer ball 6 located on the bottom surface of the sliding frame 4 will slide left and right, thereby adjusting the lateral position of the hammer ball 6, which has practical benefits.

[0050] Example 6:

[0051] This embodiment provides an elevator door mechanical strength testing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0052] One end of the first rotating shaft 13 extends through the inner wall of the sliding frame 4 to the outside of the sliding frame 4. The top surface of the sliding frame 4 is fixedly mounted with a first motor 14. One end of the output shaft of the first motor 14 and one end of the first rotating shaft 13 are both fixedly mounted with pulleys 15. The two pulleys 15 are provided with the same belt 16. When the first motor 14 is started, the first rotating shaft 13 is driven to rotate through the cooperation of the belt 16 and the two pulleys 15, which has the advantage of speed.

[0053] Example 7:

[0054] This embodiment provides an elevator door mechanical strength testing device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0055] Among them, support blocks 39 are fixedly installed at the four corners of the bottom surface of the base 1, which can improve the stability during operation.

[0056] In use: Before the strength test, place the elevator door to be tested in the placement slot 17. Activate the second electric push rod 38 to drive the third rack 37 to slide. When the third rack 37 slides, it drives the third gear 36 to rotate. When the third gear 36 rotates, the third shaft 31 will rotate accordingly. The rotation of the third shaft 31 will drive the second gear 32 to rotate. Since the two second racks 33 are located on the left and right sides of the second gear 32 respectively, when the second gear 32 rotates, the two second racks 33 will slide in opposite directions. When the two second racks 33 slide in opposite directions, the two connecting blocks 34 will also slide in opposite directions. When sliding, the two sliding plates 18 slide in opposite directions. As the two sliding plates 18 slide in opposite directions, the two clamping plates 19 also slide in opposite directions, adjusting their distance to clamp and fix the two sides of the elevator door, improving stability during strength testing. To adjust the height, the second motor 25 is started, driving the second rotating shaft 23 to rotate. When the second rotating shaft 23 rotates, the two first gears 24 rotate accordingly. The rotation of the two first gears 24 drives the two first racks 21 to slide up and down. As the two first racks 21 slide up and down, the lifting frame 3 slides accordingly, thus adjusting the sliding frame located on one side of the lifting frame 3. 4. The hammer ball 6 on the bottom surface of the sliding frame 4 will slide up and down to adjust the height of the hammer ball 6, which is convenient. When performing strength tests on different positions of the elevator door, and when adjusting different lateral positions, the third motor 28 is started to drive the threaded rod 26 to rotate. When the threaded rod 26 rotates, it will drive the sliding frame 4 to slide left and right. When the sliding frame 4 slides left and right, the hammer ball 6 located on the bottom surface of the sliding frame 4 will slide left and right accordingly, thereby adjusting the lateral position of the hammer ball 6. To facilitate batch inspection of the same type of elevator door in the same area, the first motor 14 is started to drive the second motor 28 through the cooperation of the belt 16 and two pulleys 15. When the first shaft 13 rotates, it drives the rotating plate 5 to rotate. When the rotating plate 5 rotates, the falling angle and height of the hammer ball 6 will change, thereby adjusting the impact force of the hammer ball 6. At this time, the first electric push rod 12 is activated to retract. When one end of the first electric push rod 12 is pulled out from the collar 10, the hammer ball 6 will fall and finally hit the elevator door to perform a strength test. After the test, the hammer ball 6 only needs to be put back into the groove 9 and limited by the first electric push rod 12, and then the same position of the next elevator door can be tested for strength. This method ensures the accuracy and convenience of batch testing.

[0057] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A device for testing the mechanical strength of elevator doors, characterized in that, include: A base (1) is fixedly mounted on the top surface of the base (1), a lifting frame (3) is slidably mounted on one side of the fixed plate (2), a sliding frame (4) is slidably mounted on the inner side wall of the lifting frame (3), and a rotating plate (5) is provided inside the sliding frame (4). The lifting assembly is installed inside the fixed plate (2) and is used to drive the lifting frame (3) to move up and down; Hammer ball (6), the hammer ball (6) is set on the bottom surface of the rotating plate (5), the bottom surface of the sliding frame (4) is fixedly installed with a connecting seat (7), the connecting seat (7) is fixedly installed with a hanging rope (8), one end of the hanging rope (8) is fixedly connected to one side of the hammer ball (6); The first rotating shaft (13) is rotatably mounted on the inner wall of the sliding frame (4). The rotating plate (5) is fixedly mounted on the outer wall of the first rotating shaft (13). The bottom surface of the rotating plate (5) is provided with a groove (9). The groove (9) is adapted to the size of the hammer ball (6). The rotating plate (5) is provided with a first cavity (11). The first cavity (11) is connected to the groove (9). The outer wall of the hammer ball (6) is fixedly mounted with a collar (10). The inner wall of the first cavity (11) is fixedly mounted with a first electric push rod (12). One end of the first electric push rod (12) is inserted into the collar (10). Placement slot (17) is opened on the top surface of the base (1). Two sliding plates (18) are slidably installed on the bottom surface of the inner side of the placement slot (17). Clamping plates (19) are fixedly installed on the opposite side of the two sliding plates (18). An adjustment component is disposed within the base (1) and is used to adjust the distance between the two sliding plates (18).

2. The elevator door mechanical strength testing device according to claim 1, characterized in that, The lifting assembly includes two first slide grooves (20), both of which are opened on one side of the fixed plate (2). A first rack (21) is slidably installed in each of the two first slide grooves (20). One side of the two first racks (21) is fixedly connected to one side of the lifting frame (3). A second cavity (22) is opened in the fixed plate (2). The second cavity (22) is connected to the two first slide grooves (20). A second rotating shaft (23) is rotatably installed on the inner side wall of the second cavity (22). Two first gears (24) are fixedly installed on the outer side wall of the second rotating shaft (23). The two first gears (24) mesh with the two first racks (21) respectively. A second motor (25) is fixedly installed on one side of the fixed plate (2). One end of the output shaft of the second motor (25) is fixedly connected to one end of the second rotating shaft (23).

3. The elevator door mechanical strength testing device according to claim 1, characterized in that, The adjustment assembly includes a third cavity (30), which is located inside the base (1). A third rotating shaft (31) is rotatably mounted on the top surface of the third cavity (30). A second gear (32) is fixedly mounted on the outer wall of the third rotating shaft (31). Two second racks (33) are slidably mounted on the bottom surface of the third cavity (30). The two second racks (33) are located on the left and right sides of the second gear (32) respectively. The two second racks (33) mesh with the second gear (32). Two second sliding grooves (29) are opened on the bottom surface of the placement groove (17). The two second sliding grooves (29) are located above the two second racks (33) respectively. A connecting block (34) is fixedly mounted on the top surface of each of the two second racks (33). The two connecting blocks (34) are slidably connected to the two second sliding grooves (29) respectively. The top surfaces of the two second sliding grooves (29) are fixedly connected to the bottom surfaces of the two sliding plates (18) respectively.

4. The elevator door mechanical strength testing device according to claim 3, characterized in that, The adjustment assembly also includes a bottom groove (35), which is formed on the bottom surface of the base (1). The bottom end of the third rotating shaft (31) extends through the inner bottom surface of the third cavity (30) into the bottom groove (35). A third gear (36) is fixedly installed at the bottom end of the third rotating shaft (31). A second electric push rod (38) is fixedly installed on the inner side wall of the bottom groove (35). A third rack (37) is fixedly installed at one end of the second electric push rod (38). The third rack (37) meshes with the third gear (36).

5. The elevator door mechanical strength testing device according to claim 1, characterized in that, A threaded rod (26) is rotatably installed on the inner side wall of the lifting frame (3). A threaded hole (27) is opened on one side of the sliding frame (4). The threaded hole (27) is threadedly connected to the threaded rod (26). A third motor (28) is fixedly installed on one side of the lifting frame (3). One end of the output shaft of the third motor (28) is fixedly connected to one end of the threaded rod (26).

6. The elevator door mechanical strength testing device according to claim 1, characterized in that, One end of the first rotating shaft (13) extends through the inner wall of the sliding frame (4) to the outside of the sliding frame (4). The top surface of the sliding frame (4) is fixedly installed with a first motor (14). One end of the output shaft of the first motor (14) and one end of the first rotating shaft (13) are both fixedly installed with pulleys (15). The two pulleys (15) are provided with the same belt (16).

7. The elevator door mechanical strength testing device according to claim 1, characterized in that, Support blocks (39) are fixedly installed at the four corners of the bottom surface of the base (1).

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