Elevator door lock performance test device

Abstract

The application discloses a kind of elevator door lock performance test device, door lock includes first component and second component, first part and second component are respectively installed on two door leaves, first component has catch, reset spring for making catch reset and drive wheel for driving catch torsion, second component has the card station for catch hanging, card station has contact surface, elevator door lock performance test device includes durability testing device;Durability testing device includes: first pressure sensor, which is provided on the contact surface of the card station, the tip of the head of the catch is used to abut on the first pressure sensor, the first pressure sensor is used to detect the contact force of the tip of the catch and the contact surface;Batten, fixedly connected to the drive wheel;Cam, arranged above or below the batten;First motor, for driving the cam to rotate, the cam drives the drive wheel to rotate by cooperating with the batten, to drive the catch to twist and hang with the card station or separate from the card station.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of elevator testing, and in particular to a test device for testing the performance of a car door lock of an escalator. BACKGROUND

[0002] The car door lock generally comprises a first part fixed to one of the door leaves and a second part fixed to the other door leaf, the second part having a clamping table and the first part having a clamping hook which is reset by a spring, at the moment when the two door leaves are closed, the head of the clamping hook is hung on the clamping table, before the door leaves are opened, the clamping hook is reversely pivoted to move away from the clamping table, and then the first part is horizontally moved with the door leaves, so as to unlock the door lock.

[0003] The test device for testing the performance of the door lock generally comprises a durability test device, a static load test device and / or an impact test device. The durability test device tests the durability of the cooperation between the clamping hook and the clamping table by making the clamping hook frequently and long-term hung on the clamping table; the static load test device tests the connection strength between the clamping hook and the clamping table by providing a static load to the two door leaves; and the impact test device tests the anti-impact performance of the door lock by providing an impact to one of the door leaves in the opening direction.

[0004] However, the durability test device, the static load test device and the impact test device in the prior art test device have the following defects:

[0005] 1. The defect of the durability test device is that, in the process of simulating the action of the door lock by driving the clamping hook, when the clamping hook is hung on the clamping table, a force in the opening direction is applied to the door leaves, if the door leaves cannot be opened, it is considered that the spring resets the clamping hook to the position and the action of the door lock is normal, however, in fact, even if the clamping hook is not reset to the position, the door leaves cannot be opened due to the small force applied to the door leaves, thus causing a false judgment. In addition, the prior art durability test device not only drives the clamping hook to pivot, but also drives the clamping hook to horizontally move by driving the door leaves, however, the action of driving the horizontal movement is not necessary, thus the prior art durability test device causes the related structure to become complex due to the provision of the redundant action.

[0006] 2. The defect of the static load test device is that, the prior art static load test device drives the load applying part to apply a load to the door leaves by the cooperation of the screw and the nut, however, since the load applying part and the door leaves adopt the rigid contact mode, the load curve is too steep, that is, the screw only rotates a small angle, and the load applied to the door leaves is suddenly increased.

[0007] 3. The defect of the impact test device is that, the prior art static load test device impacts the door leaves by the pendulum, however, in a small space, the pendulum sometimes cannot provide a large impact force, and a sufficient space needs to be reserved for avoiding the pendulum. SUMMARY

[0008] In view of the above technical problems existing in the prior art, the embodiment of the present application provides a lift door lock performance test device.

[0009] To solve the above technical problems, the technical scheme adopted by the embodiment of the present application is as follows:

[0010] A lift door lock performance test device, the door lock comprising a first part and a second part, the first part being arranged on one of the door leaves, the second part being arranged on the other of the door leaves, the first part having a hook, a reset spring for resetting the hook, and a driving wheel for driving the hook to twist, the second part having a clamping table for the hook to be hung on, the clamping table having a contact surface, the lift door lock performance test device comprising a durability test device.

[0011] The durability test device comprises:

[0012] a first pressure sensor arranged on the contact surface of the clamping table, a tip of a head of the hook being used to abut on the first pressure sensor, the first pressure sensor being used to detect a pre-tightening force of the contact of the tip of the hook with the contact surface, and the reset condition of the hook being evaluated based on the pre-tightening force;

[0013] a plate fixedly connected to the driving wheel;

[0014] a cam arranged above or below the plate;

[0015] a first motor used to drive the cam to rotate, the cam driving the driving wheel to rotate by cooperating with the plate, so as to drive the hook to twist to be hung on or separated from the clamping table.

[0016] Preferably, the lift door lock performance test device further comprises a static load test device; the static load test device comprises:

[0017] a first plate frame fixed on one of the door leaves;

[0018] a second plate frame fixed on the other of the door leaves;

[0019] an inner guide sleeve fixedly connected to the first plate frame;

[0020] an outer guide sleeve sleeved outside the inner guide sleeve;

[0021] a nut fixed in the outer guide sleeve;

[0022] a screw rod penetrating through the inner guide sleeve and the nut from the outside of the first plate frame, and forming screw transmission with the nut;

[0023] a second motor connected to the outer end of the screw rod through a shaft coupling;

[0024] a force spring arranged between the second plate frame and the outer guide sleeve;

[0025] a second pressure sensor arranged on the inner plate surface of the second plate frame and facing the force spring.

[0026] Preferably, the end of the outer guide sleeve is formed with a central shaft, and the force spring is sleeved on the central shaft; wherein:

[0027] a stop disc axially slidable is sleeved on the central shaft, and the force spring is arranged between the stop disc and the outer guide sleeve;

[0028] a limit cap is arranged on the end of the central shaft.

[0029] Preferably, the edge of the stop disc corresponds to the second pressure sensor, and the stop disc is used to press against the second pressure sensor.

[0030] Preferably, the elevator door lock performance test device further comprises an impact test device, and the impact test device comprises:

[0031] a third plate frame arranged on one of the door leaves;

[0032] a fourth plate frame arranged on the other one of the door leaves;

[0033] a guide rod penetrating through the third plate frame and axially slidable relative to the third plate frame;

[0034] an impact hammer arranged on the inner end of the guide rod and facing the fourth plate frame;

[0035] an impact compression spring sleeved on the guide rod and arranged between the impact hammer and the third plate frame;

[0036] a linear driving mechanism used to push against the impact hammer to compress the impact compression spring so as to accumulate elastic potential energy of the impact compression spring;

[0037] a locking release mechanism capable of locking or releasing the guide rod after the linear driving mechanism compresses the impact compression spring, and after the guide rod is released, the impact compression spring releases the elastic potential energy to impact the fourth plate frame by the impact hammer.

[0038] Preferably, the linear driving mechanism is a first cylinder fixed on the outer side of the fourth plate frame, and a through hole is formed on the fourth plate frame, and the piston rod of the first cylinder pushes against the impact hammer through the through hole.

[0039] Preferably, the lock releasing mechanism comprises a second cylinder and a limiting rod arranged on the head of the piston rod of the second cylinder; the second cylinder is fixed to the outer side of the third plate frame and the limiting rod is radially directed to the guide rod, the guide rod is provided with a limiting slot, the guide rod is limited by driving the limiting rod to extend into the limiting slot by the second cylinder, and the guide rod is released by making the limiting rod exit from the limiting slot.

[0040] Compared with the prior art, the performance test device for the elevator door lock has the beneficial effects that:

[0041] The advantages of the durability test device are that:

[0042] 1. The contact pre-tightening force of the hook and the card table is detected to determine whether the hook is completely reset, and the durability of the door leaf is determined.

[0043] 2. The first motor, the batten and the cam are used to drive the hook to reciprocate and twist, and the step of driving the hook to move horizontally is omitted, so that the structure of the device is simplified without affecting the test effect.

[0044] The advantages of the static load test device are that:

[0045] By arranging the force spring between the baffle disc and the outer guide sleeve, the static load applied to the second plate frame is transmitted by the force spring, so that the static load can be gradually increased, and the tensile performance of the door lock under different static loads can be obtained.

[0046] The advantages of the impact test device are that:

[0047] The impact test device uses the elastic potential energy of the impact spring to convert into kinetic energy to make the impact hammer impact the door leaf, occupies less space, and has greater impact force.

[0048] It should be understood that the foregoing general description and the following detailed description are only exemplary and illustrative, but not for limiting the present application.

[0049] The foregoing general description and the following detailed description of various implementations or examples of the technology described in the present application are not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0050] In the drawings, which are not necessarily drawn to scale, like numerals describe similar components throughout the several views. Like numerals having different letter extensions can represent different instances of similar components. The drawings illustrate generally, by way of example, various embodiments discussed herein and are not intended to limit the embodiments of the application to the examples presented, but to broaden the scope of the claimed application. The same reference numbers in different drawings can identify the same or similar elements.

[0051] Figure 1 Front view of the elevator door lock performance test device provided by the embodiment of the present application.

[0052] Figure 2 Front view of the durability test device in the elevator door lock performance test device provided by the embodiment of the present application.

[0053] Figure 3 Front view of the static load test device in the elevator door lock performance test device provided by the embodiment of the present application.

[0054] Figure 4 Front view of the impact test device in the elevator door lock performance test device provided by the embodiment of the present application.

[0055] Reference Signs:

[0056] 10 - durability test device; 11 - first pressure sensor; 12 - board; 13 - cam; 14 - first motor; 20 - static load test device; 21 - first board frame; 22 - second board frame; 23 - outer guide sleeve; 231 - center shaft; 232 - limit cap; 233 - baffle disc; 24 - inner guide sleeve; 251 - screw rod; 252 - nut; 26 - force spring; 27 - second pressure sensor; 28 - second motor; 281 - shaft coupling; 30 - impact test device; 31 - third board frame; 32 - fourth board frame; 321 - through hole; 33 - guide rod; 331 - clamping groove; 34 - impact hammer; 35 - impact compression spring; 36 - first air cylinder; 37 - second air cylinder; 371 - limit rod; 101 - first door leaf; 102 - second door leaf; 200 - door lock; 201 - first component; 202 - second component; 203 - hook; 2031 - tip; 204 - clamping table; 2041 - contact surface; 205 - driving wheel; 206 - reset spring. DETAILED DESCRIPTION

[0057] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0059] like Figure 1 and Figure 2 As shown, an embodiment of the present invention discloses a performance testing device for a car door lock 200. The door lock 200 includes two components: a first component 201 and a second component 202. The first component 201 is installed on one of the door leaves, namely, the first door leaf 101, and the second component 202 is installed on the other door leaf, namely, the second door leaf 102. The first component 201 has a pivotally connected hook 203, a return spring 206 that resets the hook 203 after pivoting, and a drive wheel 205 located at the pivot center that can drive the hook 203 to pivot. The second component 202 has a locking platform 204 with a flat contact surface 2041. The hook 203 can be pivoted and reset so that the tip 2031 of the hook 203 abuts against the contact surface 2041, thereby forming a hook with the locking platform 204. The hook 203 is moved away from the locking platform 204 by driving the drive wheel 205 in the opposite direction.

[0060] The elevator door lock 200 performance testing device includes: a durability testing device 10, a static load testing device 20, and an impact testing device 30.

[0061] like Figure 2As shown, the durability testing device 10 comprises a first pressure sensor 11, a plate 12, a cam 13 and a first motor 14. The first pressure sensor 11 is arranged at the contact surface 2041 of the clamping platform 204 and protrudes slightly from the contact surface 2041. After the clamping hook 203 is hung on the clamping platform 204, the tip 2031 of the clamping hook 203 abuts against the first pressure sensor 11. Normally, under the action of the return spring 206, the clamping hook 203 abuts against the contact surface 2041 with a certain pre-tightening force. If the pre-tightening force with which the clamping hook 203 abuts against the contact surface 2041 is small, it indicates that the clamping hook 203 has been or will be unable to reset normally, and at the same time, it indicates that the return spring 206 may be invalid. The first pressure sensor 11 is used to detect the pre-tightening force, so as to determine whether the clamping hook 203 can reset normally based on the size of the pre-tightening force, and then obtain the durability of the door lock 200.

[0062] The plate 12, the cam 13 and the first motor 14 are used to drive the clamping hook 203 to twist and reset. Specifically, one end of the plate 12 is fixedly connected to the driving wheel 205, the cam 13 is arranged above the other end of the plate 12, and the first motor 14 is used to drive the cam 13. Through the contact and cooperation between the cam 13 and the surface of the plate 12, the clamping hook 203 is periodically driven to be separated from the clamping platform 204 and hung by the elastic force of the return spring 206.

[0063] The advantages of the durability testing device 10 are as follows:

[0064] 1. The clamping hook 203 is determined to be completely reset by detecting the contact pre-tightening force between the clamping hook 203 and the clamping platform 204, and then the durability of the door leaf is determined.

[0065] 2. The first motor 14, the plate 12 and the cam 13 are used to drive the clamping hook 203 to reciprocate and twist, and the step of driving the clamping hook 203 to move horizontally is omitted, so that the structure of the device is simplified without affecting the test effect.

[0066] As shown in the accompanying drawings, Figure 3 The static load testing device 20 is used to apply a static load in the opening direction to the door leaf. The static load testing device 20 comprises a first plate frame 21, a second plate frame 22, an inner guide sleeve 24, an outer guide sleeve 23, a nut 252, a screw rod 251, a second motor 28, a force spring 26, a blocking disc 233 and a second pressure sensor 27.

[0067] The first frame 21 is fixed to the first door leaf 101, and the second frame 22 is fixed to the second door leaf 102 and opposite to the first frame 21. The second motor 28 is located outside the first frame 21 and faces the first frame 21. The inner guide sleeve 24 is fixed inside the first frame 21 and extends from the end of the outer guide sleeve 23 into the outer guide sleeve 23. The nut 252 is fixed in the outer guide sleeve 23 and is located in front of the inner guide sleeve 24. The outer end of the screw 251 is connected to the output shaft of the second motor 28 through the coupling 281. The inner end of the screw 251 passes through the inner guide sleeve 24 and the nut 252 in sequence and forms a helical engagement with the nut 252. Thus, the second motor 28 drives the screw 251 to rotate, and the engagement of the screw 251 and the nut 252 drives the outer guide sleeve 23 to move axially toward the second frame 22.

[0068] The outer guide sleeve 23 has a central shaft 231 at its end, and a limit cap 232 is installed at the end of the central shaft 231. A baffle 233 is sleeved on the central shaft 231 and can slide along the central shaft 231. A force spring 26 is sleeved on the central shaft 231 and is located between the baffle 233 and the outer guide sleeve 23.

[0069] The second plate frame 22 has a hollowed-out section in the middle. The second pressure sensor 27 is installed on the inner side of the second plate frame 22 and located on the outer periphery of the hollowed-out section, and corresponds to the baffle 233.

[0070] When it is necessary to test the static load that the door lock 200 can withstand when it is locked, the second motor 28 drives the screw 251. The screw 251, in conjunction with the nut 252, drives the outer guide sleeve 23 to move toward the second plate frame 22, and then causes the retaining plate 233 to abut against the second pressure sensor 27. The second pressure sensor 27 begins to detect the static load from the retaining plate 233. The second motor 28 continues to run, causing the outer guide sleeve 23 to continue moving toward the second plate frame 22, thereby compressing the force spring 26. The compression of the force spring 26 increases the pressure of the retaining plate 233 on the second pressure sensor 27.

[0071] The advantages of this static load testing device are:

[0072] By setting a force-applying spring 26 between the baffle 233 and the outer guide sleeve 23, the static load applied to the second plate frame 22 is transmitted through the force-applying spring 26, thereby enabling a gradual increase in the static load, which is beneficial for obtaining the tensile strength of the door lock 200 under different static loads.

[0073] like Figure 4 As shown, the impact testing device 30 includes: a third plate frame 31, a fourth plate frame 32, a guide rod 33, an impact spring 35, an impact hammer 34, a linear drive mechanism, and a locking and releasing mechanism.

[0074] The third plate frame 31 is installed on the first door leaf 101, the fourth plate frame 32 is installed on the second door leaf 102, and the fourth plate frame 32 is opposite to the third plate frame 31; the guide rod 33 is arranged through the third plate frame 31 and can axially slide relative to the third plate frame 31, the inner end of the guide rod 33 is towards the fourth plate frame 32, and the impact hammer 34 is fixed on the inner end of the guide rod 33; the impact compression spring 35 is sleeved on the guide rod 33 and is between the impact hammer 34 and the third plate frame 31.

[0075] The first cylinder 36 is selected as the linear driving mechanism, the first cylinder 36 is arranged on the outer side of the fourth plate frame 32, and the piston rod of the first cylinder 36 is towards the impact hammer 34; a through hole 321 is formed in the fourth plate frame 32, the piston rod of the first cylinder 36 is extended and abuts against the impact hammer 34, the impact hammer 34 is compressed by the impact compression spring 35, and the impact compression spring 35 obtains greater elastic potential energy due to compression.

[0076] A clamping groove 331 is formed in the outer periphery of the guide rod 33, the locking and releasing mechanism comprises a second cylinder 37 and a limiting rod 371 arranged on the piston rod of the second cylinder 37, the second cylinder 37 is arranged through the outer side of the third plate frame 31, and the limiting rod 371 is radially towards the guide rod 33; when the first cylinder 36 compresses the impact compression spring 35, the guide rod 33 slides backward to make the clamping groove 331 opposite to the limiting rod 371, at this time, the second cylinder 37 drives the head of the limiting rod 371 to extend into the clamping groove 331, thereby limiting the guide rod 33, so that the impact compression spring 35 is kept in the compressed state.

[0077] When the impact test is needed, the second cylinder 37 is used to drive the limiting rod 371 to exit the clamping groove 331, the guide rod 33 is released from the limitation, the impact compression spring 35 is reset to convert the elastic potential energy into kinetic energy of the impact hammer 34 to hit the fourth plate frame 32, thereby completing the impact test.

[0078] The impact test device 30 has the following advantages:

[0079] The impact test device 30 converts the elastic potential energy of the impact compression spring 35 into kinetic energy to make the impact hammer 34 impact the door leaf, the occupied space is small, and the impact force is large.

[0080] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application, the protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements are also regarded as falling within the protection scope of the present application.

Claims

1. A performance test device for a door lock of an elevator car, said door lock comprising a first member and a second member, said first member being attached to one of the door leaves, said second member being attached to the other of the door leaves, said first member having a hook, a return spring for returning the hook, and a driving wheel for driving the hook to be twisted, said second member having a hook receiving surface for receiving the hook, said hook receiving surface having a contact surface, characterized in that, The elevator door lock performance test device comprises a durability test device; The durability test device comprises: A first pressure sensor is arranged on the contact surface of the card table, and the tip of the head of the hook is used to abut on the first pressure sensor. The first pressure sensor is used to detect the pre-tightening force of the contact between the tip of the hook and the contact surface, and to evaluate the reset condition of the hook based on the pre-tightening force. A plate is fixedly connected to the driving wheel. A cam is arranged above or below the plate. A first motor is used to drive the cam to rotate. The cam drives the driving wheel to rotate by cooperating with the plate, so as to drive the hook to twist and be hung with or separated from the card table.

2. The elevator door lock performance test apparatus according to claim 1, wherein The elevator door lock performance test device further comprises a static load test device; the static load test device comprises: A first plate frame is fixed to one of the door leaves; A second plate frame is fixed to the other of the door leaves; An inner guide sleeve is fixedly connected to the first plate frame; An outer guide sleeve is sleeved outside the inner guide sleeve; A nut is fixed in the outer guide sleeve; A screw rod passes through the inner guide sleeve and the nut from the outside of the first plate frame and forms a screw transmission with the nut; A second motor is connected to the outer end of the screw rod through a shaft coupling; A force spring is arranged between the second plate frame and the outer guide sleeve; A second pressure sensor is arranged on the inner plate surface of the second plate frame and faces the force spring.

3. The elevator door lock performance test apparatus according to claim 2, wherein The end of the outer guide sleeve forms a central shaft, and the force spring is sleeved on the central shaft; wherein: The central shaft is sleeved with an axially slidable baffle disc, and the force spring is between the baffle disc and the outer guide sleeve; The end of the central shaft is provided with a limiting cap.

4. The elevator door lock performance test apparatus according to claim 3, wherein The edge of the baffle disc corresponds to the second pressure sensor, and the baffle disc is used to press against the second pressure sensor.

5. The elevator door lock performance test apparatus according to claim 1, wherein The elevator door lock performance test device further comprises an impact test device, and the impact test device comprises: A third plate frame is arranged on one of the door leaves; A fourth plate frame is arranged on the other of the door leaves; A guide rod passes through the third plate frame and can axially slide relative to the third plate frame; An impact hammer is arranged on the inner end of the guide rod and faces the fourth plate frame; An impact compression spring is sleeved on the guide rod and is between the impact hammer and the third plate frame; A linear drive mechanism is used to push the impact hammer to compress the impact compression spring to make the impact compression spring accumulate elastic potential energy; A locking release mechanism can lock or release the guide rod after the impact compression spring is compressed by the linear drive mechanism. After the guide rod is released, the impact compression spring releases the elastic potential energy to make the impact hammer impact the fourth plate frame.

6. The elevator door lock performance test apparatus according to claim 5, wherein The linear drive mechanism is a first air cylinder, the first air cylinder is fixed to the outside of the fourth plate frame, a through hole is formed in the fourth plate frame, and the piston rod of the first air cylinder pushes the impact hammer through the through hole.

7. The elevator door lock performance test apparatus according to claim 5, wherein The locking release mechanism comprises a second cylinder and a limiting rod arranged on the head of the piston rod of the second cylinder; the second cylinder is fixed on the outer side of the third plate frame and makes the limiting rod radially face the guide rod, a limiting slot is arranged on the guide rod, the guide rod is limited by driving the limiting rod to extend into the limiting slot by the second cylinder, and the guide rod is released by making the limiting rod exit from the limiting slot.

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