Elevator Door Lock Engagement Length Measuring Device and Method

Abstract

The present invention discloses an elevator door lock engagement length measuring device and method. The elevator door lock engagement length measuring device includes: a bottom plate, a fixing mechanism, a control and indication module, and a measuring component. The fixing mechanism is disposed on the front end face of the bottom plate and is used to fixedly connect the rear end face of the bottom plate with the elevator landing door. The control and indication module is disposed on the front end face of the bottom plate and is used to detect and display the on / off status of the door lock circuit of the landing door. The measuring component is disposed on one side of the front end face of the bottom plate and can move up and down relative to the bottom plate, and is used to obtain the value of the engagement length of the landing door. According to the elevator door lock engagement length measuring device of the above technical solution, the measuring device can be conveniently and quickly fixedly connected to or separated from the landing door. The control and indication module can display the on / off state of the door lock circuit, ensuring the accuracy of the measurement result. The measuring component can accurately read out the engagement length of the landing door, which is convenient to use and has high measurement accuracy.

Description

Technical Field

[0001] The present invention relates to the field of elevator detection devices, and particularly relates to an elevator door lock engagement length measuring device and an elevator door lock engagement length measuring method. Background Art

[0002] When the elevator landing door is closed and the door lock closing circuit is connected, the engagement length when the elevator landing door lock is closed needs to be within a certain threshold range. Otherwise, the landing door may not close securely, which will pose a safety hazard. Similarly, when the elevator landing door is opened and the door lock closing circuit is disconnected, the engagement length when the elevator landing door lock is disconnected also needs to be within a certain threshold range to ensure the normal opening of the elevator landing door.

[0003] Traditional measurement methods use a steel straightedge for measurement, with low accuracy and poor versatility. Some measurement methods use displacement sensors, resulting in high test costs. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides an elevator door lock engagement length measuring device, which can conveniently measure the engagement length of the landing door lock of the elevator, with high measurement accuracy, simple structure, and low cost.

[0005] The present invention also provides an elevator door lock engagement length measuring method using the elevator door lock engagement length measuring device.

[0006] In a first aspect, an elevator door lock engagement length measuring device according to an embodiment of the present invention includes: a bottom plate; a fixing mechanism disposed on the front end face of the bottom plate for fixedly connecting the rear end face of the bottom plate to the landing door of the elevator; a control and indication module disposed on the front end face of the bottom plate for detecting and displaying the on / off status of the door lock circuit of the landing door; a measuring component disposed on one side of the front end face of the bottom plate and movable up and down relative to the bottom plate for obtaining the value of the landing door engagement length.

[0007] The elevator door lock engagement length measuring device according to an embodiment of the present invention has at least the following beneficial effects: The measuring device is fixed at a suitable position on the landing door using the fixing mechanism, then the measuring component is connected to the movable locking hook of the landing door of the elevator, and finally the control and indication module is connected to the door lock circuit of the elevator. During measurement, the movable locking hook is gradually pressed down to drive the movement of the measuring component until the control and indication module gives a connection indication. At this time, the reading of the measuring component is the engagement length of the door lock. The fixing device can conveniently and quickly fixedly connect or separate the measuring device from the landing door. The control and indication module can display the on / off state of the door lock circuit to ensure the accuracy of the measurement result. The measuring component can accurately read the engagement length of the landing door, is easy to use, and has high measurement accuracy.

[0008] According to some embodiments of the present invention, the measuring component includes: a support member disposed on the bottom plate and a scale passing through the support member, the scale being reciprocally movable along the support member; a measuring piece sleeved on the upper end of the scale, a zero-adjusting mechanism being provided at the lower end of the scale; and a compression elastic member being provided between the support member and the measuring piece.

[0009] According to some embodiments of the present invention, the fixing mechanism is a magnetic base.

[0010] According to some embodiments of the present invention, the control and indication module includes: a box body disposed on the bottom plate and forming a sealed space with the bottom plate; a power supply disposed in the sealed space; an indicator light disposed on the box body and electrically connected to the power supply; a current sensor including a clamp and contacts, the clamp being electrically connected to the power supply, the contacts being connected in series between the power supply and the indicator light, and the clamp being able to extend a certain distance outside the box body.

[0011] According to some embodiments of the present invention, threads are provided at both ends of the scale, and the measuring piece is fixed to the scale by a fixing nut matching the threads.

[0012] According to some embodiments of the present invention, the zero-adjusting mechanism includes a first zero-adjusting nut and a second zero-adjusting nut matching the threads.

[0013] According to some embodiments of the present invention, a fine-tuning mechanism is further included. The support member is slidably connected to the bottom plate through the fine-tuning mechanism, and the support member can reciprocally move in the moving direction of the scale under the drive of the fine-tuning mechanism.

[0014] The fine-tuning mechanism includes a screw pair, a guiding slide rail and a guiding slider. The support member is connected to the slider of the screw pair. Through holes for the slider to pass through are provided on the brackets at both ends of the screw pair. A rotating handle is provided at one end of the screw rod of the screw pair. The guiding slide rail is disposed on the bottom plate, and the guiding slider is slidably disposed on the guiding slide rail and connected to the support member.

[0015] In a second aspect, an elevator door lock engagement length measuring method according to an embodiment of the present invention includes the following steps:

[0016] [[ID=2A]]Zero adjustment: Zero-adjust the scale and fix the zero-adjustment result;

[0017] Fixing and fine-tuning: Fix the bottom plate at a suitable position on the landing door of the elevator so that the upper end surface of the measuring piece is flush with the upper end surface of the fixed lock hook of the landing door of the elevator;

[0018] Connection control indication module: Clamp the clamp of the current sensor in the control indication module on any wire in the door lock circuit of the elevator;

[0019] Closed engagement length measurement: Drive the movable locking hook of the landing door of the elevator to gradually move towards the fixed locking hook, and push the measuring piece to move until the control indication module indicates that the door lock circuit is conductive. At this time, the scale value on the scale corresponding to the end face of the support is the closed engagement length;

[0020] Open engagement length measurement: Continue to drive the movable locking hook of the landing door of the elevator to move a certain distance towards the fixed locking hook, and then drive the movable locking hook to gradually move away from the fixed locking hook until the control indication module indicates that the door lock circuit is open. At this time, the scale value on the scale corresponding to the end face of the support is the open engagement length.

[0021] According to some embodiments of the present invention, the fixed fine-tuning step includes:

[0022] Fixing: Fix the bottom plate on the landing door of the elevator so that there is a certain distance between the measuring piece and the movable locking hook of the landing door;

[0023] Fine-tuning: Drive the support to move through the fine-tuning mechanism until the upper end face of the measuring piece is flush with the upper end face of the fixed locking hook.

[0024] The additional aspects and advantages of the present invention will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present invention. Brief Description of the Drawings

[0025] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0026] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0027] Figure 2 is a schematic side structural diagram of an embodiment of the present invention;

[0028] Figure 3 is Figure 2 the bottom structural diagram of;

[0029] Figure 4 is a schematic back structural diagram of an embodiment of the present invention;

[0030] Figure 5 is a schematic use state diagram of an embodiment of the present invention;

[0031] Figure 6 is the working principle diagram of the control indication module of an embodiment of the present invention.

[0032] Reference numerals:

[0033] Base plate 100,

[0034] Fixing mechanism 200,

[0035] Control and indication module 300, indicator lamp 310, current sensor 320,

[0036] Supporting member 400,

[0037] Scale 500, measuring piece 510,

[0038] Compression elastic member 600,

[0039] Zero adjustment mechanism 700, first zero adjustment nut 710, second zero adjustment nut 720,

[0040] Fine adjustment mechanism 800, screw pair 810, bracket 811, slider 812, rotating handle 820, guiding slide rail 830, guiding slider 831,

[0041] Movable locking hook 900, fixed locking hook 910. Detailed implementation manners

[0042] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0043] In the description of the present invention, unless otherwise clearly defined, words such as "set", "install", "connect", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0044] Refer to Figure 1According to an embodiment of the present invention, an elevator door lock engagement length measuring device comprises a base plate 100, a fixing mechanism 200 disposed on the base plate 100, a control and indication module 300, and a measuring assembly. The fixing mechanism 200 is disposed on the front surface of the base plate 100 and is used to securely connect the rear end of the measuring device to the elevator landing door. This can be achieved through clamping, adsorption, or other fixing methods. The control and indication module 300 is used to detect and display the continuity status of the elevator landing door's door lock circuit. When the door lock is engaged, the door lock circuit is connected; when the door lock is disengaged, the door lock circuit is disconnected. During actual elevator operation, when the door lock circuit is connected, the door lock engagement length must be greater than a certain threshold. The measuring assembly is disposed on the front surface of the base plate 100 and can move up and down relative to the base plate 100. During use, it connects to the movable lock hook 900 of the landing door and measures the door engagement length by measuring the distance the movable lock hook moves. During measurement, the movable lock hook is gradually pressed downward, driving the measuring assembly to move until the control and indication module indicates continuity. The reading at this point in time is the door lock engagement length. The installation is convenient, the measurement steps are simple and the measurement accuracy is high. It is understandable that the control indication module 300 can use sound signals or visual signals to indicate the on / off status of the door lock circuit.

[0045] Reference Figure 1 and Figure 5 In some embodiments, the measuring assembly includes a support member 400 disposed on the base plate 100 and a scale 500 disposed within the support member. The scale 500 can reciprocate along the support member 400. One end of the scale 500 is provided with graduations, and the other end is also fitted with a measuring piece 510. The other end of the scale 500 is provided with a zero adjustment mechanism 700. This mechanism adjusts the maximum length of the graduated end of the scale 500 extending from the support member 400 and fixes the adjustment result. A compressible elastic member 600 is connected at one end to the measuring piece 510 and at the other end to the support member 400. This member is used to drive the graduated end of the scale 500 away from the support member 400, allowing the measuring piece 510 to maintain contact with the movable latch hook 900 of the landing door, thereby measuring the engagement movement length of the movable latch hook 900. It is understandable that the support member 400 can be a solid structure with a through hole in the middle for passing the scale 500, or a frame structure with through holes at both ends and a hollow interior.

[0046] Reference Figure 1, in some embodiments, the elevator door lock engagement length measuring device further includes a fine adjustment mechanism 800. The support member 400 is slidably connected to the bottom plate 100 through the fine adjustment mechanism 800. The support member 400 can make reciprocating movements in the direction of the through hole of the support member 400 under the drive of the fine adjustment mechanism 800. In use, the measuring device can be fixed at a certain distance from the movable lock hook 900. The position of the support member 400 is adjusted through the fine adjustment mechanism 800, so that the measuring piece 510 approaches the movable lock hook 900 along with the support member 400 until the two are in contact, realizing a pressure-free contact between the measuring piece 510 and the movable lock hook 900, and further improving the measurement accuracy. It can be understood that the fine adjustment mechanism 800 can be a linear drive mechanism with high precision, such as a rack or a ball screw.

[0047] Referring to Figure 6 , in some embodiments, the principle of the control and indication module 300 is as shown in the figure. A power supply, an indicator light 310 and a current sensor 320 are provided in the box body of the control and indication module 300. The current sensor 320 uses the electromagnetic induction method to detect whether there is current in the door lock circuit to judge the on-off of the door lock circuit. The current sensor 320 includes a clamp and a contact. The clamp is used to clamp on the wire of the door lock circuit to detect the magnetic field on the door lock circuit to detect whether there is current in the door lock circuit. The contact of the current sensor 320 is connected into the circuit in which the power supply and the indicator light 310 are connected in series. The on-off of the contact can control the lighting and extinguishing of the indicator light 310. When the current sensor 320 detects the current in the door lock circuit, the contact closes to light up the indicator light 310; when the current sensor 320 does not detect the current in the door lock circuit, the contact opens to turn off the indicator light 310. Using this detection method, the control and indication module 300 does not need to be connected to the door lock circuit as a loop. It only needs to clamp on any wire in the door lock circuit with a clamp, which is convenient and practical and will not damage the door lock circuit. It can be understood that the power supply can independently provide electric energy for the current sensor 320 and the indicator light 310, or can be connected to an external voltage to convert the external voltage into electric energy that the current sensor 320 and the indicator light 310 can use. It can be understood that the indicator light 310 can be replaced by a buzzer.

[0048] The elevator door lock engagement length measuring device according to the embodiment of the first aspect of the present invention can measure the door lock engagement length of the elevator by using the following elevator door lock engagement length measuring method. The specific steps include:

[0049] Zero adjustment: Zero-adjust the scale and fix the zero-adjustment result;

[0050] Fixed fine adjustment: Fix the bottom plate at a suitable position on the landing door of the elevator, so that the upper end surface of the measuring piece 510 is flush with the upper end surface of the fixed lock hook 910 of the landing door of the elevator;

[0051] Connection control indication module: Clamp the clamp of the current sensor 320 in the control indication module 300 on any wire in the door lock circuit of the elevator;

[0052] Closed engagement length measurement: Drive the movable locking hook 900 of the landing door of the elevator to gradually move in the direction of the fixed locking hook 910, contact the measuring piece 510 and push the measuring piece 510 to move until the control indication module 300 indicates that the door lock circuit is conducting. At this time, the scale value on the scale 500 corresponding to the end face of the support 400 is the closed engagement length;

[0053] Open engagement length measurement: Continue to drive the movable locking hook 900 of the landing door of the elevator to move a certain distance in the direction of the fixed locking hook 910, and then drive the movable locking hook 900 to gradually move in the direction away from the fixed locking hook 910 until the control indication module 300 indicates that the door lock circuit is open. At this time, the scale value on the scale corresponding to the end face of the support 400 is the open engagement length.

[0054] It can be understood that in order to ensure the accuracy of the measurement data, the moving speed of the driving movable locking hook 900 during the closed engagement length measurement and the open engagement length measurement should be less than the graduation value of the scale 500 per second, ensuring that the read scale value is the scale value when the door lock circuit is connected and disconnected.

[0055] In some embodiments, in order to further improve the measurement accuracy, the fixed fine-tuning steps include:

[0056] Fixing: Fix the bottom plate on the landing door of the elevator so that there is a certain distance between the measuring piece 510 and the movable locking hook 900 of the landing door;

[0057] Fine-tuning: Drive the support 400 to move through the fine-tuning mechanism 700 until the upper end face of the measuring piece 510 contacts the upper end face of the fixed locking hook 910.

[0058] By using the above fixed fine-tuning method, the upper end face of the measuring piece 510 can be flush with the upper end face of the fixed locking hook 910, ensuring the accuracy of the initial measurement position and improving the measurement accuracy of the engagement length.

[0059] Next, refer to Figures 1 to 6 A specific embodiment is used to describe in detail the elevator door lock engagement length measurement device according to the embodiment of the present invention. It should be understood that the following description is only an exemplary illustration and not a specific limitation of the invention.

[0060] Refer to Figure 1 And Figure 4In this embodiment, the fixing mechanism 200 includes a magnetic seat, and a rectangular through-hole for installing the magnetic seat is provided on the base plate 100, and the magnetic seat is embedded in the rectangular through-hole. By turning the knob of the magnetic seat, the measuring device can be adsorbed on the floor door. The support member 400 is a solid sliding sleeve with a cylindrical through-hole inside, and the scale 500 is a cylinder that fits the through-hole. Threads are provided at both ends of the scale 500, and the measuring piece 510 is a spring piece. The measuring piece 510 is fixed to the scale 500 through a nut and a thread at one end of the scale 500. The compression elastic member 600 is a compression spring, which is sleeved on the scale 500, with one end abutting against the measuring piece 510 and the other end abutting against the end face of the support member 400. It maintains a compression deformation state under the action of the zero adjustment mechanism 700.

[0061] Reference Figure 2 In this embodiment, the zero adjustment mechanism 700 includes a first zero adjustment nut 710 and a second zero adjustment nut 720, which are sequentially mounted on the end of the scale 500 facing away from the measuring piece 510. Loosening the second zero adjustment nut 720 prevents the first zero adjustment nut 710 from shifting, maintaining the zero adjustment result. The first zero adjustment nut 710 is used to adjust the length of the scale end of the scale 500 extending beyond the support member 400, achieving zero adjustment. During use, the second zero adjustment nut 720 is rotated to separate from the first zero adjustment nut 710, and then the first zero adjustment nut 710 is rotated. Since both ends of the scale 500 are threaded, the first zero adjustment nut 710 can be adjusted by the threads on the scale 500 to change its position on the scale 500. Furthermore, the first zero adjustment nut 710, under the action of the compression elastic member 600, abuts against the end surface of the support member 400. Therefore, by changing the position of the first zero adjustment nut 710 on the scale 500, the maximum length of the scale 500's graduated end extending out of the support member 400 can be adjusted. By adjusting the position of the first zero adjustment nut 710, the zero mark of the scale 500 is aligned with the end surface of the support member 400, achieving zero adjustment. After adjustment, the second zero adjustment nut 720 is rotated to engage with the first zero adjustment nut 710 to fix the adjustment result.

[0062] Reference Figures 1 to 3 In this embodiment, the fine-tuning mechanism 800 includes a screw pair 810, a guide rail 830, and a guide slider 831 slidably arranged on the guide rail 830. The screw of the screw pair 810 is arranged on the base plate 100 through a bracket 811. The bracket 811 is provided with a rectangular through hole for the support member 400 to pass through, so as to avoid obstruction to the movement of the support member 400. Figure 3As shown. One end of the screw rod of the screw pair 810 is provided with a rotating handle 820, and the screw rod can be driven to rotate relative to the bracket 811 by rotating the rotating handle 820. The slider 812 of the screw pair 810 is connected to the support member 400. When the rotating handle 820 is rotated, the support member 400 moves along the direction of the screw rod under the drive of the slider 812 of the screw pair 810, realizing fine adjustment of the position of the support member 400, so that the measuring piece 510 can achieve non-pressure contact with the movable locking hook 900. Refer to Figure 2 , the guiding slide rail 830 is arranged on the bottom plate 100, and its erection direction is the same as the direction of the screw rod. The guiding slider 831 is connected to the support member 400, and the guiding slider 831 can move along the guiding slide rail 830 together with the support member 400. The guiding slide rail 830 and the guiding slider 831 can ensure the movement direction of the slider 812 and guarantee the accuracy of fine adjustment.

[0063] Refer to Figure 1 and Figure 6 , in this embodiment, the control and indication module 300 uses optical signals to indicate the on and off of the door lock circuit. When the door lock circuit is turned on, the indicator light 310 lights up; when the door lock circuit is turned off, the indicator light 310 goes out. The indicator light 310 is arranged on the box body of the control and indication module 300. The power supply is a switching power supply, and an interface (not shown in the figure) for connecting the switching power supply to an external voltage is provided on the box body of the control and indication module 300. The clamp of the current sensor 320 ( Figure 1 not shown in the figure) is connected to the power supply and the indicator light 310 inside the control and indication module 300 through a wire.

[0064] The elevator door lock engagement length measuring device according to the embodiment of the present invention can be conveniently fixed at a suitable position on the elevator landing door. And it has a zero adjustment mechanism and a fine adjustment mechanism, which can realize the zero calibration function, and can make the measuring piece achieve non-pressure contact with the movable locking hook, and the control and indication module can detect the on and off state of the door lock circuit without directly connecting to the door lock circuit, which is convenient to use and has a simple structure.

[0065] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A method for measuring the engagement length of an elevator door lock using an elevator door lock engagement length measuring device, characterized in that: The elevator door lock engagement length measuring device includes a base plate, a fixing mechanism, a control indication module and a measuring assembly; the fixing mechanism is arranged on the front end surface of the base plate, and is used to fix the rear end surface of the base plate to the elevator landing door; the control indication module is arranged on the front end surface of the base plate, and is used to detect and display the on-off status of the door lock circuit of the landing door; the measuring assembly is arranged on one side of the front end surface of the base plate and can move up and down relative to the base plate, and is used to obtain the engagement length value of the landing door; the measuring assembly includes a support member arranged on the base plate and a scale passing through the support member, and the scale can reciprocate along the support member; a measuring piece is sleeved on the upper end of the scale, and a zero adjustment mechanism is provided at the lower end of the scale, and a compressive elastic member is provided between the support member and the measuring piece; threads are provided at both ends of the scale, and the measuring piece is fixed to the scale by a fixing nut matching the threads; the method includes the following steps: Zero adjustment: adjust the scale to zero and fix the zero adjustment result; Fixed fine-tuning: Fix the bottom plate at the appropriate position of the elevator landing door so that the upper end surface of the measuring piece is flush with the upper end surface of the fixed lock hook of the elevator landing door; Connect the control indicator module: Clamp the current sensor in the control indicator module to any wire in the elevator door lock circuit; Closed engagement length measurement: Drive the movable lock hook of the elevator landing door gradually to move toward the fixed lock hook, and push the measuring piece to move until the control indicator module indicates that the door lock circuit is turned on. At this time, the scale value on the scale corresponding to the end face of the support member is the closed engagement length; Disengagement length measurement: Continue to drive the movable lock hook of the elevator floor door to move a certain distance toward the fixed lock hook, and then drive the movable lock hook gradually to move away from the fixed lock hook until the control indication module indicates that the door lock circuit is disconnected. At this time, the scale value on the scale corresponding to the end face of the support is the disengagement length.

2. The elevator door lock engagement length measuring method of the elevator door lock engagement length measuring device according to claim 1, characterized in that: The fixing mechanism is a magnetic seat.

3. The elevator door lock engagement length measuring method of the elevator door lock engagement length measuring device according to claim 1, characterized in that: The control instruction module includes: The box body is arranged on the bottom plate and forms a space with the bottom plate; a power source, disposed in the space; an indicator light, disposed on the box body and electrically connected to the power supply; The current sensor includes a clamp and a contact, wherein the clamp is electrically connected to the power supply, the contact is connected in series between the power supply and the indicator light, and the clamp extends a distance outside the box body.

4. The elevator door lock engagement length measuring method of the elevator door lock engagement length measuring device according to claim 1, characterized in that: The zero adjustment mechanism includes a first zero adjustment nut and a second zero adjustment nut matched with the thread.

5. The elevator door lock engagement length measuring method of the elevator door lock engagement length measuring device according to claim 1, characterized in that: It also includes a fine-tuning mechanism, through which the support member is slidably connected to the base plate, and the support member can reciprocate in the movement direction of the scale under the drive of the fine-tuning mechanism.

6. The elevator door lock engagement length measuring method of the elevator door lock engagement length measuring device according to claim 5, characterized in that: The fine-tuning mechanism includes a screw pair, a guide slide and a guide slider. The support member is connected to the slider of the screw pair. The brackets at both ends of the screw pair are provided with through holes for the slider to pass through. One end of the screw rod of the screw pair is provided with a rotating handle. The guide slide is arranged on the base plate. The guide slider can be slidably arranged on the guide slide, and the guide slider is connected to the support member.

7. The elevator door lock engagement length measuring method of the elevator door lock engagement length measuring device according to claim 1, characterized in that: The fixed fine-tuning step includes: Fixing: Fix the bottom plate on the elevator landing door so that there is a certain distance between the measuring piece and the movable lock hook of the elevator landing door; Fine-tuning: The support is driven to move by the fine-tuning mechanism until the upper end surface of the measuring piece is flush with the upper end surface of the fixed locking hook.

Images