Elevator door lock engagement depth measuring device

Abstract

The utility model belongs to the technical field of elevator detection, and discloses an elevator door lock engagement depth measuring device, which comprises an engagement connecting seat, a first locking hook, a second locking hook and a first locking hook, the base plate is vertically arranged, the outer edge end of the base plate is fixedly provided with a second lock hook which can be connected with the first lock hook in a meshed mode, the second lock hook comprises a meshing part and a distance measuring assembly installation part, and the side end face of the meshing part can abut against the end of the first lock hook; a pressure control switch is embedded in the lower end face of the meshing part. An elastic supporting column which can abut against the pressure control switch is vertically installed on the meshing connecting base. A distance measuring assembly is hinged to the side end face of the distance measuring assembly mounting part and comprises a miniature laser distance measuring instrument in electric control connection with the pressure control switch, and distance measuring laser emitted by the distance measuring end of the miniature laser distance measuring instrument is arranged in the direction perpendicular to the top end face of the meshing connecting base. The meshing depth measuring device can automatically complete the measuring process of depth change, manual operation is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and more specifically to an elevator door lock engagement depth measuring device. Background Technology

[0002] An elevator door lock is a locking device between the car door and the landing door. The elevator door lock includes a door lock fixing component and a lock hook. When the elevator closes, the lock hook swings downward and engages with the door lock fixing component, so that the elevator door can automatically close without external force and keep the elevator door in a closed state, preventing the landing door and car door from being opened at will.

[0003] Currently, according to the new inspection standard TSGT7001-2009 "Rules for Supervision and Periodic Inspection of Elevators - Traction and Drive Elevators," the engagement depth of elevator door locks must reach at least 7mm before the elevator can start. The regulations stipulate that the engagement depth between the lock hook and the door lock fixing parts must be at least 7mm. However, due to the unique position and structure of elevator door locks, direct measurement is difficult. The current main inspection method is visual inspection, which involves making a preliminary judgment by visual inspection before determining whether a specific measurement is necessary. This method may result in missed or incorrect judgments during visual inspection. Furthermore, the unique position of elevator door locks makes it difficult to select measurement points, leading to significant errors in the measured engagement depth. Therefore, the reliability and accuracy of the inspection results need further improvement.

[0004] Elevator door lock engagement depth is a crucial indicator for observing common elevator operational issues. Currently, commonly used methods for detecting door lock engagement depth include visual inspection, measurement with a steel ruler or vernier caliper, and measurement with a multimeter, steel ruler or vernier caliper, and feeler gauge. These methods require the elevator to be stopped, involve multiple personnel steps, are time-consuming and labor-intensive, and suffer from insufficient measurement accuracy due to human observation errors, making them unsuitable for the demands of modern fast-paced work and life.

[0005] Therefore, how to provide an elevator door lock engagement depth measuring device that can automatically detect engagement depth during each engagement is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the present invention provides an elevator door lock engagement depth measuring device. By setting a distance measuring component on the distance measuring component mounting part on the second lock hook, setting a pressure control switch at the bottom of the engagement part, and setting an elastic support on the engagement connecting seat corresponding to the lower part of the engagement part, the device measures the longitudinal displacement when the lock hook is locked and engaged, thereby obtaining the engagement depth. This solves the technical problems in the prior art of inconvenience in measuring engagement depth and difficulty in obtaining accurate data.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An elevator door lock engagement depth measuring device includes:

[0009] A meshing connection seat, wherein the meshing connection seat is horizontally arranged and a locking hook is provided thereon;

[0010] The substrate is a vertically arranged plate with shaft holes through both sides of the plate. The substrate rotates about the axis of the shaft holes. A second lock hook is fixed at its outer edge, which can engage with the first lock hook. The second lock hook includes an engaging part and a ranging component mounting part. The side end face of the engaging part can abut against the end of the first lock hook.

[0011] A pressure control switch, wherein the pressure control switch may be embedded in the lower end face of the engagement portion;

[0012] An elastic support is vertically mounted on the engagement connection seat and located below the end of the locking hook. The top surface of the elastic support can abut against the pressure control switch.

[0013] The ranging assembly includes a miniature laser rangefinder hinged to the side end face of the mounting portion of the ranging assembly. The miniature laser rangefinder is electrically connected to the pressure control switch, and the ranging laser emitted by the ranging end of the miniature laser rangefinder is arranged in a direction perpendicular to the top surface of the meshing connection seat.

[0014] Through the above technical solution, this utility model discloses an elevator door lock engagement depth measuring device. By setting an elastic support on the engagement connecting seat, and setting a ranging component on the distance measuring component mounting part of the hook lock two, and embedding a pressure control switch at the bottom end of the engagement part, the measuring device can automatically measure the depth of engagement between the second hook and the first hook. Specifically, the height distance between the top of the elastic support and the end of the first hook is a known fixed value. During the engagement and descent of the second hook, the pressure control switch inside the lower end face of its engagement part directly contacts the top of the elastic support and exerts pressure, causing the elastic support to contract and simultaneously activating the micro laser rangefinder. The micro laser rangefinder emits a ranging laser beam towards the top of the engagement connecting seat. On the surface, a miniature laser rangefinder is hinged to the side end face of the ranging component mounting part. Utilizing its own gravity, as the second locking hook rotates, the emitted ranging laser maintains a perpendicular measurement position on the top surface of the meshing connector until the first and second locking hooks engage. At this point, the longitudinal displacement distance of the meshing part pressing against the elastic support column, measured by the miniature laser rangefinder, is the difference between the measured value at the start and end positions. The depth change during engagement is the total distance obtained by adding the known height distance between the top of the elastic support column and the end of the first locking hook to the difference measured by the miniature laser rangefinder before and after the movement. When this distance is greater than or equal to 7mm, the elevator can operate normally; otherwise, maintenance is required. Therefore, this engagement depth measuring device can automatically complete the depth change measurement process along with the engagement of the first and second locking hooks, eliminating the need for manual operation. Workers can determine whether maintenance is required based on the readings from each measurement, thus improving work efficiency.

[0015] Furthermore, the ranging component also includes legs and a rotating shaft. There are two legs, both of which are vertically mounted on the side end face of the mounting part of the ranging component. The two ends of the rotating shaft are respectively rotatably connected to the top ends of the two legs. The mounting end of the miniature laser rangefinder is fixedly mounted on the rotating shaft and can rotate together with it.

[0016] The beneficial effects of adopting the above technical solution are: through the structure of the legs and the rotating shaft, the miniature laser rangefinder can easily adjust its angle. Even during the rotation of the substrate, the miniature laser rangefinder can adjust itself to a vertical position to measure its height.

[0017] Furthermore, the ranging component also includes multiple weight blocks, which are fixed to the outer wall of the miniature laser rangefinder to ensure that the ranging laser emitted by the ranging component mounting part of the miniature laser rangefinder is always perpendicular to the top surface of the meshing connector.

[0018] The beneficial effects of adopting the above technical solution are as follows: by installing multiple load-bearing blocks on the outer wall of the miniature laser rangefinder, the principle of gravity balance can be used to ensure that the ranging laser is always perpendicular to the top surface of the meshing connector, which can effectively reduce the measurement error caused by the tilt or shaking of the device, thereby improving the accuracy and reliability of the measurement; at the same time, the load-bearing blocks also increase the overall stability of the ranging component, making the miniature laser rangefinder more stable during the measurement process, and further ensuring the stability of the measurement results.

[0019] Furthermore, it also includes a central controller, which is electrically connected to the miniature laser rangefinder and wirelessly connected to the mobile control terminal.

[0020] The beneficial effects of adopting the above technical solution are: through the wireless signal connection between the central controller and the mobile control terminal, the operator can remotely monitor and control the measurement process of the elevator door lock engagement depth, which allows the operator to obtain measurement data in real time without being on site, thus improving work efficiency and convenience.

[0021] Furthermore, it also includes an alarm, which is mounted on the top surface of the engagement connector and is electrically connected to the central controller.

[0022] The beneficial effects of adopting the above technical solution are: the alarm can immediately sound an alarm when the elevator door lock engagement depth does not meet the safety standard, reminding on-site personnel to take timely measures to avoid safety accidents caused by door lock failure.

[0023] Furthermore, the elastic support includes a telescopic spring, a flexible sleeve, and a contact end cap. The lower end of the telescopic spring is mounted on the top surface of the engagement connection seat. The flexible sleeve is coaxially sleeved on the outside of the telescopic spring. The contact end cap is fixedly mounted on the upper end of the telescopic spring, and both ends of the flexible sleeve are fixedly connected to the contact end cap and the top surface of the engagement connection seat, respectively.

[0024] The beneficial effects of adopting the above technical solution are: the telescopic spring can provide stable elastic support, and when the lock hook contacts the elastic support, the telescopic spring can effectively buffer the impact force of the lock hook, reduce mechanical damage caused by instantaneous impact, and extend the service life of the device.

[0025] Furthermore, it also includes a pressure sensor, which is fixed to the lower end of the telescopic spring and located inside the flexible sleeve. The bottom end of the pressure sensor is fixed to the top surface of the engagement connector. The pressure sensor is electrically connected to the central controller to monitor the completion status of the engagement process of the first locking hook and the second locking hook.

[0026] The beneficial effects of adopting the above technical solution are: the pressure sensor can monitor the pressure change when the lock hook contacts the elastic support in real time and transmit the signal to the central controller. The central controller can determine the engagement state of the lock hook based on the pressure data, thereby realizing real-time monitoring of the engagement depth of the elevator door lock.

[0027] Furthermore, a graduated groove is provided on the plate surface of the meshing part, and the distance between the axis of the graduated groove and the lower end face of the meshing part is 7mm.

[0028] The beneficial effects of adopting the above technical solution are: the scale groove provides an intuitive visual reference for installation and debugging. When installing the second locking hook, the operator can quickly adjust the position of the second locking hook according to the scale groove to ensure that its engagement depth with the first locking hook meets the design requirements; during routine maintenance or inspection, maintenance personnel can quickly determine whether the engagement depth of the locking hook is normal by observing the relative position of the scale groove and the first locking hook, without the need for other measuring tools, thus improving inspection efficiency.

[0029] Furthermore, the engaging part has multiple engaging grooves arranged horizontally on one side surface corresponding to the locking hook, and all of the engaging grooves are located above the scale groove. The end of the locking hook can be engaged in any one of the engaging grooves.

[0030] The beneficial effects of adopting the above technical solution are: the design of multiple meshing grooves allows the end of the first locking hook to be engaged in different meshing grooves, thereby realizing flexible adjustment of various meshing depths, which can meet the specific requirements of different elevator door lock systems for meshing depth, and enhance the versatility and adaptability of the device; at the same time, by setting meshing grooves, the stability of the first locking hook and the second locking hook when engaged is further improved. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structural state before engagement provided by this utility model.

[0033] Figure 2 This is a schematic diagram of the structure after engagement provided by this utility model.

[0034] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0035] Figure 4 for Figure 2 A schematic diagram of the axial three-dimensional structure.

[0036] Among them, 1-engaging connection seat, 11-locking hook one, 2-base plate, 21-locking hook two, 211-engaging part, 212-range measuring component mounting part, 213-scale groove, 214-engaging groove, 3-pressure control switch, 4-elastic support, 41-telescopic spring, 42-flexible sleeve, 43-contact end cap, 5-range measuring component, 51-miniature laser rangefinder, 52-support leg, 53-rotating shaft, 54-weight block, 6-central controller, 7-alarm, 8-pressure sensor. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] This utility model discloses an elevator door lock engagement depth measuring device, including an engagement connecting seat 1 and a base plate 2 that engage with each other. The engagement connecting seat 1 is horizontally arranged and has a locking hook 11 on it. The base plate 2 is a vertically arranged plate with shaft holes through its two side surfaces. The base plate 2 rotates about the axis of the shaft holes. A locking hook 21 that can engage with the locking hook 11 is fixed at its outer edge. The locking hook 21 includes an engagement part 211 and a distance measuring component mounting part 212. The side end face of the engagement part 211 can abut against the end of the locking hook 11. A pressure control switch 3 is embedded in the lower end face of the engagement part 211; an elastic support 4 is vertically mounted on the engagement connecting seat 1, the elastic support 4 is located below the end of the locking hook 11 and its top surface can abut against the pressure control switch 3; a ranging component 5 is hingedly mounted on the side end face of the ranging component mounting part 212, the ranging component 5 includes a miniature laser rangefinder 51, the miniature laser rangefinder 51 is electrically controlled connected to the pressure control switch 3, and the ranging laser emitted by the ranging end of the miniature laser rangefinder 51 is arranged along the direction of the top surface of the vertical engagement connecting seat 1.

[0039] This utility model relates to one embodiment of the ranging component 5. The ranging component 5 further includes two legs 52 and a rotating shaft 53. Two legs 52 are vertically mounted on the side end face of the ranging component mounting portion 212. The two ends of the rotating shaft 53 are rotatably connected to the top ends of the two legs 52 respectively. The mounting end of the miniature laser rangefinder 51 is fixedly mounted on the rotating shaft 53 and can rotate with it. Through the structure of the legs 52 and the rotating shaft 53, the miniature laser rangefinder 51 can easily adjust its angle. Even during the rotation of the substrate 2, the miniature laser rangefinder 51 can automatically adjust to a vertical position for height measurement.

[0040] In another embodiment of the ranging component 5, the ranging component 5 further includes multiple weight blocks 54 fixed to the outer wall of the miniature laser rangefinder 51 to ensure that the ranging laser emitted by the ranging component mounting part of the miniature laser rangefinder 51 is always perpendicular to the top surface of the meshing connector 1. By installing multiple weight blocks 54 on the outer wall of the miniature laser rangefinder 51, the principle of gravity balance can be used to ensure that the ranging laser is always perpendicular to the top surface of the meshing connector 1, which can effectively reduce measurement errors caused by device tilting or shaking, thereby improving the accuracy and reliability of measurement; at the same time, the weight blocks 54 also increase the overall stability of the ranging component 5, making the miniature laser rangefinder 51 more stable during measurement, further ensuring the stability of the measurement results.

[0041] In the above embodiment, a central controller 6 is also included. The central controller 6 is electrically connected to the miniature laser rangefinder 51 and wirelessly connected to the mobile control terminal. Through the wireless connection between the central controller 6 and the mobile control terminal, the operator can remotely monitor and control the measurement process of the elevator door lock engagement depth. This allows the operator to obtain measurement data in real time without being on-site, improving work efficiency and convenience.

[0042] In the above embodiment, an alarm 7 is also included. The alarm 7 is installed on the top surface of the engagement connector 1 and is electrically connected to the central controller 6. The alarm 7 can immediately sound an alarm when the elevator door lock engagement depth does not meet the safety standard, reminding on-site personnel to take timely measures to avoid safety accidents caused by door lock malfunction.

[0043] In a specific embodiment of this utility model, the elastic support 4 includes a telescopic spring 41, a flexible sleeve 42, and a contact end cap 43. The lower end of the telescopic spring 41 is mounted on the top surface of the engagement connecting seat 1. The flexible sleeve 42 is coaxially sleeved on the outside of the telescopic spring 41. The contact end cap 43 is fixedly mounted on the upper end of the telescopic spring 41, and both ends of the flexible sleeve 42 are fixedly connected to the side end face of the contact end cap 43 and the top surface of the engagement connecting seat 1, respectively. The telescopic spring 41 provides stable elastic support. When the locking hook contacts the elastic support 4, the telescopic spring 41 can effectively buffer the impact force of the locking hook, reduce mechanical damage caused by instantaneous impact, and extend the service life of the device.

[0044] In the above embodiment, a pressure sensor 8 is also included. The pressure sensor 8 is installed at the lower end of the telescopic spring 41 and located inside the flexible sleeve 42. The bottom end of the pressure sensor 8 is fixed to the top surface of the engagement connector 1. The pressure sensor 8 is electrically connected to the central controller 6 to monitor the completion status of the engagement process of the locking hook 11 and the locking hook 21. The pressure sensor 8 can monitor the pressure change when the locking hook contacts the elastic support 4 in real time and transmit the signal to the central controller 6. The central controller 6 can determine the engagement status of the locking hook based on the pressure data, thereby realizing real-time monitoring of the engagement depth of the elevator door lock.

[0045] In another embodiment of this utility model, a graduated groove 213 is provided on the plate surface of the meshing part 211, and the distance between the axis of the graduated groove 213 and the lower end face of the meshing part 211 is 7mm. The graduated groove 213 provides an intuitive visual reference for installation and debugging. When installing the second locking hook 21, the operator can quickly adjust the position of the second locking hook 21 according to the graduated groove 213 to ensure that its meshing depth with the first locking hook meets the design requirements; during routine maintenance or inspection, maintenance personnel can observe the relative position of the graduated groove and the first locking hook 11, and when other measuring tools fail, they can quickly determine whether the meshing depth of the locking hook is normal, thus improving inspection efficiency.

[0046] In the above embodiment, the engaging part 211 has multiple engaging grooves 214 arranged horizontally on one side surface corresponding to the locking hook 11. All engaging grooves 214 are located above the scale groove 213, and the end of the locking hook 11 can be engaged in any one of the engaging grooves 214. The design of multiple engaging grooves 214 allows the end of the locking hook 11 to be engaged in different engaging grooves 214, thereby achieving flexible adjustment of various engagement depths. This meets the specific requirements of different elevator door lock systems for engagement depth, enhancing the versatility and adaptability of the device. Simultaneously, by setting the engaging grooves 214, the stability of the locking hook 11 and locking hook 21 during engagement is further improved.

[0047] In addition, the specific embodiment regarding the height setting of the elastic support 4 in this utility model is as follows:

[0048] 1) The top surface of the elastic support 4 can be flush with the upper surface of the end of the locking hook 11, so that when the locking hook 21 begins to engage with the locking hook 11, it will press down to trigger the pressure control switch 3, and at the same time start the micro laser rangefinder 51 to measure the distance. The engagement depth is the difference in the measurement value before and after the micro laser rangefinder 51 moves.

[0049] 2) The top surface of the elastic support 4 and the upper surface of the end of the lock hook 11 can be set at a height interval of 7mm, which is the minimum safe engagement depth. When the micro laser rangefinder 51 starts measuring distance, it can be directly determined that the engagement depth meets the requirements. When the engagement depth is less than 7mm, the micro laser rangefinder 51 will not be triggered, and it can be directly determined that the elevator door lock does not meet the engagement depth requirements and needs to be stopped and maintained immediately.

[0050] The working principle of the elevator door lock engagement depth measuring device of this utility model is as follows:

[0051] By setting an elastic support on the meshing connector, and setting a ranging component on the ranging component mounting part of the hook lock two, and embedding a pressure control switch at the bottom of the meshing part to control the opening and closing of the ranging component, the measuring device can automatically measure the depth of the hook two when it is engaged with the hook one. That is, the height distance between the top of the elastic support and the end of the hook one is a known fixed value. During the engagement and descent of the hook two, the pressure control switch in the lower end face of its meshing part will directly contact the top of the elastic support and squeeze it, causing the elastic support to contract and simultaneously activating the miniature laser rangefinder. The miniature laser rangefinder can emit a ranging laser beam onto the top surface of the meshing connector. The miniature laser rangefinder is hinged to the side end face of the ranging component mounting part and can rely on its own... Under the influence of gravity, as the second locking hook rotates, the ranging laser emitted by it can maintain a vertical measurement on the top surface of the meshing connector until the first and second locking hooks are fully engaged. At this point, the longitudinal displacement distance of the meshing part pressing the elastic support, measured by the miniature laser rangefinder, is the difference between the measured value at the beginning and end of its movement. The change in depth during the engagement process is the total distance obtained by adding the known height distance between the top of the elastic support and the end of the first locking hook to the difference measured by the miniature laser rangefinder before and after the movement. When this distance is greater than or equal to 7mm, the elevator can operate normally. Otherwise, an alarm will sound to warn the user, and the alarm signal will be transmitted to the remote control terminal through the central controller to remind staff to perform elevator maintenance.

[0052] Therefore, this engagement depth measuring device can automatically complete the depth change measurement process along with the engagement of locking hook one and locking hook two, without manual operation. The staff can judge whether it needs maintenance based on the reading of each measurement, which improves work efficiency.

[0053] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for measuring the engagement depth of an elevator door lock, characterized in that, include: Engaging connecting seat (1), the engaging connecting seat (1) is arranged horizontally and a locking hook (11) is provided thereon; The substrate (2) is a vertically arranged plate with shaft holes through its two sides. The substrate (2) rotates about the axis of the shaft hole. Its outer edge is fixed with a second lock hook (21) that can engage with the first lock hook (11). The second lock hook (21) includes an engaging part (211) and a ranging component mounting part (212). The side end face of the engaging part (211) can abut against the end of the first lock hook (11). Pressure control switch (3), the pressure control switch (3) is embedded in the lower end face of the engagement part (211); The elastic support (4) is vertically mounted on the engagement connection seat (1) and located below the end of the locking hook (11). The top surface of the elastic support (4) can abut against the pressure control switch (3). The ranging component (5) includes a miniature laser rangefinder (51) hinged to the side end face of the ranging component mounting part (212). The miniature laser rangefinder (51) is electrically connected to the pressure control switch (3), and the ranging laser emitted by the ranging end of the miniature laser rangefinder (51) is arranged in a direction perpendicular to the top surface of the meshing connection seat (1).

2. The elevator door lock engagement depth measuring device according to claim 1, characterized in that, The ranging component (5) also includes legs (52) and a rotating shaft (53). There are two legs (52), both of which are vertically mounted on the side end face of the ranging component mounting part (212). The two ends of the rotating shaft (53) are respectively rotatably connected to the top ends of the two legs (52). The mounting end of the miniature laser rangefinder (51) is fixedly mounted on the rotating shaft (53) and can rotate together with it.

3. The elevator door lock engagement depth measuring device according to claim 2, characterized in that, The ranging component (5) also includes a weight block (54), which is multiple and fixed on the outer side wall of the miniature laser rangefinder (51) to ensure that the ranging laser emitted by the ranging component mounting part of the miniature laser rangefinder (51) is always perpendicular to the top surface of the meshing connector (1).

4. The elevator door lock engagement depth measuring device according to claim 1, characterized in that, It also includes a central controller (6), which is electrically connected to the miniature laser rangefinder (51) and wirelessly connected to the mobile control terminal.

5. The elevator door lock engagement depth measuring device according to claim 4, characterized in that, It also includes an alarm (7), which is mounted on the top surface of the engagement connector (1) and is electrically connected to the central controller (6).

6. The elevator door lock engagement depth measuring device according to claim 4, characterized in that, The elastic support (4) includes a telescopic spring (41), a flexible sleeve (42), and a contact end cap (43). The lower end of the telescopic spring (41) is mounted on the top surface of the engagement connection seat (1). The flexible sleeve (42) is coaxially sleeved on the outside of the telescopic spring (41). The contact end cap (43) is fixedly mounted on the upper end of the telescopic spring (41), and both ends of the flexible sleeve (42) are fixedly connected to the side end face of the contact end cap (43) and the top surface of the engagement connection seat (1), respectively.

7. The elevator door lock engagement depth measuring device according to claim 6, characterized in that, It also includes a pressure sensor (8), which is installed at the lower end of the telescopic spring (41) and located inside the flexible sleeve (42). The bottom end of the pressure sensor (8) is fixed on the top surface of the engagement connector (1). The pressure sensor (8) is electrically connected to the central controller (6) to monitor the completion status of the engagement process of the first locking hook (11) and the second locking hook (21).

8. The elevator door lock engagement depth measuring device according to claim 1, characterized in that, The meshing part (211) has a scale groove (213) on its plate surface, and the distance between the axis of the scale groove (213) and the lower end face of the meshing part (211) is 7mm.

9. The elevator door lock engagement depth measuring device according to claim 8, characterized in that, The engaging part (211) has multiple engaging grooves (214) arranged horizontally on one side of the locking hook (11). The multiple engaging grooves (214) are all located above the scale groove (213). The end of the locking hook (11) can be engaged in any one of the engaging grooves (214).

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