A kind of elevator landing door lock wear engagement early warning detection device

Abstract

This invention relates to the field of elevator landing door lock technology, specifically to an elevator landing door lock wear and engagement early warning detection device. The device includes a linear push mechanism, a detection column, an elastic positioning lifter, and a contact ramp. The elastic positioning lifter and the linear push mechanism are both fixedly installed on the landing door frame structure. The detection column is fixedly installed on the push end of the linear push mechanism. This elevator landing door lock wear and engagement early warning detection device can detect whether the circuit is conductive when the lock hook is embedded 7mm deep into the lock hook plate. If the circuit is not conductive, the elevator can operate normally. Furthermore, the elastic force of the elastic positioning lifter can delay wear at the rotating part or downward concavity of the support seat. It can also detect severe wear at the rotating part or downward concavity of the support seat by detecting a broken plastic gasket, combined with a pressure sensor, to avoid subsequent problems such as rotation failure and excessive engagement depth.

Description

Technical Field

[0001] This invention relates to the field of elevator landing door lock technology, and specifically to an elevator landing door lock wear engagement early warning detection device. Background Technology

[0002] When the locking hook and the locking hook plate are engaged, such as Figure 1 As shown, it determines whether the end of the lock hook is embedded 7mm into the lock hook plate at the instant the double-contact contacts the large contact. After contact, the lock hook continues to move downwards, eventually stopping at an embedment of 11mm into the lock hook plate, and then... Figure 2 It is clearly visible that the double-pass contact spring is bent downwards by pressure. However, due to the elastic deformation of the double-pass contact spring during elevator maintenance, it may bend upwards or downwards. When bending downwards, the locking hook can only be energized when it is embedded less than 7mm into the locking hook plate; conversely, when bending upwards, it can be energized when it is embedded more than 7mm. When the double-pass contact spring bends downwards, the elevator equipment is in a safe state. However, if it bends upwards, for example, the circuit is activated when embedded only 6mm, and the elevator immediately starts. In this case, the door engagement may not meet the elevator's safety standards, and the door may reopen.

[0003] Furthermore, during long-term use, the rotating parts of the locking hook may experience severe wear or the support seat may become severely concave, leading to a series of subsequent problems such as rotation failure and excessive engagement depth.

[0004] Therefore, it is necessary to design an elevator landing door lock wear and engagement early warning detection device that can detect whether the circuit is conductive when the lock hook is embedded in the lock hook plate at a depth of 7mm. In addition, it can delay the wear at the rotating part or the downward concavity of the support seat, and can detect when the wear at the rotating part or the downward concavity of the support seat is severe, so as to avoid a series of subsequent problems such as rotation failure and excessive engagement depth. Summary of the Invention

[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide an elevator floor door lock wear engagement early warning detection device, which provides early warning of door lock wear through detection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides an elevator landing door lock wear engagement early warning detection device, including a linear push mechanism, a detection column, an elastic positioning lifter, and a contact inclined plate. The elastic positioning lifter and the linear push mechanism are both fixedly installed on the landing door frame structure. The detection column is fixedly installed on the push end of the linear push mechanism. The linear push mechanism is used to push the detection column toward the curved end of the lock hook, so that the detection column lifts the curved end upward to contact the outer surface of the detection column. The curved end is provided with an inclined surface for the detection column to be lifted. The contact inclined plate is fixedly installed on the elastic lifting end of the elastic positioning lifter. The contact inclined plate contacts the outer inclined surface of the curved end. The elastic lifting end of the elastic positioning lifter is provided with a clearance hole for the detection column to pass through. The side of the contact inclined plate near the detection column is provided with a slope.

[0007] Preferably, the detection column is equipped with a pressure sensor for sensing when the slope is contacted.

[0008] Preferably, the elastic positioning lifter includes two connecting rods, a spring, a guide sleeve, a lifting block, and a limiting baffle. The lifting block can be vertically slidably installed in the guide sleeve. The spring can provide an upward elastic force to the lifting block. The limiting baffle is fixedly installed on the top of the lifting block to limit the lifting block. The two ends of each connecting rod are respectively connected to the contact inclined plate and the lifting block.

[0009] Preferably, the elastic positioning lifter further includes a support ring and multiple plastic gaskets. The support ring is located inside the guide sleeve and is used to support the bottom of the spring. A gap is left between the support ring and the bottom of the guide sleeve, and multiple support rings are horizontally inserted between the support ring and the guide sleeve.

[0010] Preferably, a sliding column is fixedly provided in the lower middle part of the lifting block, and the sliding column is inserted into the support ring.

[0011] Preferably, an impact ring is fixedly provided on the outer edge of the sliding column, and a gap is left between the bottom of the impact ring and the top of the support ring.

[0012] Preferably, the linear push mechanism includes an electric push rod, a guide column, and a guide seat. A pressure sensor is connected between the output end of the electric push rod and the guide column to sense the compressive force on the guide column. A detection column is fixedly installed at the end of the guide column, and the guide column and the guide seat are slidably connected.

[0013] Preferably, two ventilation holes are provided on both sides of the lifting block.

[0014] Preferably, the distance between the top of the outer edge of the detection column and the top of the locking hook plate is [value missing].

[0015] The beneficial effects of this invention are as follows: The elevator landing door lock wear and engagement early warning detection device of this invention can detect whether the circuit is conductive when the lock hook is embedded in the lock hook plate at a depth of 7mm. If the circuit is not conductive, the elevator can operate normally. Furthermore, the elastic force of the elastic positioning lifter can delay wear at the rotating parts or downward concavity of the support seat. It can also detect severe wear at the rotating parts or downward concavity of the support seat by detecting a breakage of the plastic gasket, combined with a pressure sensor, thus avoiding a series of subsequent problems such as rotation failure and excessive engagement depth. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is the front view of the existing technology in its un-locked state.

[0018] Figure 2 This is the front view of the existing technology in the snap-fit ​​state.

[0019] Figure 3 This is the front view of the invention in its installed state.

[0020] Figure 4 for Figure 3 A magnified view of part A.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the contact inclined plate.

[0022] Figure 6 A perspective view of the elastically positioned lifting mechanism.

[0023] Figure 7 This is a partial three-dimensional structural diagram of the elastic positioning lifting device.

[0024] Figure 8 This is the front view of the linear actuator.

[0025] Figure 9 This is a partial three-dimensional structural diagram of the elastic positioning lifting device.

[0026] Figure 10 A three-dimensional structural diagram of the detection column after the locking hook is lifted upwards.

[0027] Figure 11 This is a three-dimensional structural diagram of the support base.

[0028] Explanation of reference numerals in the attached drawings: 1. Locking hook; 1a. Bent end; 2. Locking hook plate; 3. Linear push mechanism; 3a. Electric push rod; 3b. Guide post; 3c. Guide seat; 4. Detection post; 5. Elastic positioning lifter; 5a. Connecting rod; 5b. Spring; 5c. Guide sleeve; 5d. Lifting block; 5d1. Vent hole; 5e. Limiting baffle; 5f. Support ring; 5h. Plastic gasket; 5j. Sliding column; 5k. Impact ring; 6. Contact ramp; 6a. Slope; 6b. Flat part; 7. Pressure sensor; 10. Double-pass contact spring; 11. Large contact; 12. Downward pressure spring; 13. Support seat. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example: This invention provides an elevator landing door lock wear and engagement early warning detection device, such as... Figures 1-11 As shown, the device includes a linear push mechanism 3, a detection column 4, an elastic positioning lifter 5, and a contact ramp 6. Both the elastic positioning lifter 5 and the linear push mechanism 3 are fixedly installed on the door frame structure. The detection column 4 is fixedly installed on the push end of the linear push mechanism 3. The linear push mechanism 3 is used to push the detection column 4 toward the bent end 1a of the lock hook 1, so that the detection column 4 lifts the bent end 1a upward to contact the outer surface of the detection column 4. The bent end 1a is provided with an inclined surface for the detection column 4 to be lifted. The contact ramp 6 is fixedly installed on the elastic lifting end of the elastic positioning lifter 5. The contact ramp 6 contacts the outer inclined surface of the bent end 1a. The elastic lifting end of the elastic positioning lifter 5 is provided with a clearance hole for the detection column 4 to pass through. The side of the contact ramp 6 near the detection column 4 is provided with a ramp 6a.

[0031] The detection is divided into two situations: Firstly, the circuit is checked for continuity when the hook 1 is embedded 7mm deep into the hook plate 2. Specifically, the linear push mechanism 3 pushes horizontally. When the detection post 4 contacts the inclined surface of the bent end 1a, the bent end 1a is rotated. Finally, the detection post 4 is inserted to the bottom of the bent end 1a, and the hook 1 is lifted upwards. Figure 10 As shown in the diagram. If the double-contact spring 10 is bent downwards or just in a position where it will not be contacted, then from... Figure 10As can be seen, the double-contact spring 10 and the large contact 11 are in a separated state, which indicates that there is no fault and the elevator can operate with confidence. This test is not only performed during the installation of the double-contact spring 10, but also can be self-checked periodically through electronic control to prevent the double-contact spring 10 from being pulled upwards due to metal adhesion between it and the large contact 11, as well as other related problems.

[0032] If wear occurs at the rotating part of the locking hook 1 or the support seat 13 is recessed downwards, the locking hook 1 will press down on the contact ramp 6. When the detection column 4 pushes horizontally, it will first contact the ramp 6a, pushing the contact ramp 6 upwards, so that the locking hook 1 can return to the state where there is no wear at the rotating part or the support seat 13 is recessed downwards. In this way, the rotation of the locking hook 1 is decomposed into two opposing upward processes, ensuring that the locking hook 1 can rotate upwards.

[0033] Secondly, such as Figure 3 and Figure 4 As shown, the elastic positioning lifter 5 contacts the locking hook 1 via the contact ramp 6. Furthermore, the downward spring 12 connected to the locking hook 1 has a greater elastic force than the upward elastic force of the elastic positioning lifter 5. The elastic force of the elastic positioning lifter 5 provides a damping effect when the locking hook 1 rotates downwards, delaying wear at the rotating part or the downward concavity of the support base 13.

[0034] The detection column 4 is equipped with a pressure sensor 7 for sensing when the ramp 6a is contacted. If wear occurs at the rotating part of the locking hook 1 or the support seat 13 is recessed downwards during the pushing process, resulting in the locking hook 1 being embedded deeper than 11mm, the detection column 4 will come into contact with the ramp 6a during the pushing process and will be subject to resistance. The pressure sensor 7 can sense the pressure value, and the data can be uploaded to the cloud service. It is possible to choose whether to send an engineer to repair the rotating part of the locking hook 1.

[0035] To enable the upward lifting of the contact ramp 6, and to provide a clearance hole for the detection post 4 to pass through, the elastic positioning lifter 5 includes two connecting rods 5a, a spring 5b, a guide sleeve 5c, a lifting block 5d, and a limiting baffle 5e. The lifting block 5d is vertically slidably installed within the guide sleeve 5c. The spring 5b provides an upward elastic force to the lifting block 5d. The limiting baffle 5e is fixedly installed on the top of the lifting block 5d to limit its position. The two ends of each connecting rod 5a are connected to the contact ramp 6 and the lifting block 5d, respectively. The upward elastic force provided by the spring 5b allows the lifting block 5d to push the contact ramp 6 to support the bent end 1a. The limiting baffle 5e limits the height of the lifting block 5d. Furthermore, the upward elastic force of the spring 5b helps to dampen the lock hook 1 in case of wear at the rotation point of the locking hook 1 or downward concavation of the support seat 13. The specific principle can be deduced from the formula for calculating impact force. By extending the separation time between the locking hook 1 and the contact inclined plate 6 through the spring, the shock absorption effect is achieved. This reduction in vibration can decrease the maximum impact force on the support base 13 and slow its downward indentation. The inner sides of the two connecting rods 5a are in contact with the two sides of the limiting baffle 5e, which ensures that the lifting block 5d can only move up and down and cannot rotate.

[0036] To enable detection when wear is severe at the rotating part or the support seat 13 is severely concave, and to avoid subsequent problems such as rotational failure and excessive engagement depth, the elastic positioning lifter 5 also includes a support ring 5f and multiple plastic gaskets 5h. The support ring 5f is located inside the guide sleeve 5c and supports the bottom of the spring 5b. A gap is left between the support ring 5f and the bottom of the guide sleeve 5c. Multiple support rings 5f are horizontally inserted between the support ring 5f and the guide sleeve 5c. When the rotating part of the locking hook 1 is severely worn or the support seat 13 has severely concave, the rotation amplitude of the locking hook 1 will increase. Although the contact ramp 6 can be dampened by the elastic positioning lifter 5, the downward pressure on the contact ramp 6 will increase. This downward pressure will be transmitted through the spring 5b and act on the support ring 5f. Prolonged and large-amplitude impact will cause the plastic gaskets 5h to break. After the breakage, the contact ramp 6 will slide directly downwards, eventually causing the ramp 6a to contact the top of the limit baffle 5e. The subsequently moving detection column 4 will only contact the flat surface 6b of the contact ramp 6. The excessive pressure signal is transmitted to the cloud service via the pressure sensor 7, and the manufacturer quickly dispatches engineers for repairs, preventing subsequent problems such as rotational malfunctions and excessive engagement depth. It should be noted that although the detection function is lost at this point, the elevator can still operate normally.

[0037] The impact force that the plastic gasket 5h can withstand can be controlled by changing the number of plastic gaskets 5h and by creating grooves at the joints of the plastic gaskets 5h.

[0038] A sliding column 5j is fixedly installed in the lower middle part of the lifting block 5d. The sliding column 5j is inserted into the support ring 5f. By setting the sliding column 5j, the middle part of the support ring 5f is supported, so that the support ring 5f can only move downward, ensuring the direction of the force applied by the support ring 5f to the plastic gasket 5h.

[0039] An impact ring 5k is fixedly installed on the outer edge of the sliding column 5j, with a gap between the bottom of the impact ring 5k and the top of the support ring 5f. When the locking hook 1 can rotate significantly, the locking hook 1 impacts the contact inclined plate 6 and can impact the support ring 5f through the impact ring 5k. Under multiple impacts, the plastic gasket 5h will be broken, which also prevents more dangerous impacts.

[0040] The linear actuator 3 includes an electric push rod 3a, a guide column 3b, and a guide seat 3c. A pressure sensor 7 is connected between the output end of the electric push rod 3a and the guide column 3b to sense the compressive force on the guide column 3b. A detection column 4 is fixedly installed at the end of the guide column 3b. The guide column 3b and the guide seat 3c are slidably connected, and the guide seat 3c is fixedly installed on the door frame structure. By controlling the electric push rod 3a, it horizontally pushes the guide column 3b, causing the detection column 4 to move towards the bent end 1a. Based on the pressure value transmitted by the pressure sensor, the controller can control the electric push rod 3a to stop moving. The guide seat 3c is used to guide the movement of the guide column 3b.

[0041] Two vent holes 5d1 are provided on both sides of the lifting block 5d. By providing vent holes 5d1, when 5d moves up and down, the gas inside the guide sleeve 5c can be squeezed out from the inside of the guide sleeve 5c, and air can be quickly drawn in when moving upward.

[0042] The distance between the top of the outer edge of the detection post 4 and the top of the locking hook plate 2 is 7mm. With this positioning design, when the detection post 4 is pushed horizontally, if the worn area is higher than the detection post 4, it indicates that the depth of embedment due to wear is 7mm.

[0043] When in use, the detection device checks whether the circuit is conductive at a depth of 7mm in the locking hook plate. It is pushed horizontally by the linear push mechanism 3. When the detection column 4 contacts the inclined surface of the bent end 1a, it will push the bent end 1a to rotate. Finally, the detection column 4 will be inserted to the bottom of the bent end 1a, the locking hook 1 will be lifted upward, and the double contact spring 10 and the large contact 11 will be separated, which means there is no fault and the elevator can be operated with confidence.

[0044] When the linear actuator 3 pushes horizontally, if the pressure sensor 7 receives a small amount of pressure, it indicates that the wear at the rotating part of the locking hook 1 is slight and the downward indentation of the support seat 13 is slight. If the pressure sensor 7 receives a large amount of pressure, it indicates that the plastic gasket 5h has broken, the wear at the rotating part is severe, or the downward indentation of the support seat 13 is severe.

[0045] Furthermore, during the downward rotation of the locking hook 1, the elastic force of the elastic positioning lifter 5 provides a shock-absorbing effect, delaying the wear at the rotating part or the downward concavity of the support seat 13.

[0046] The elevator landing door lock wear and engagement early warning detection device of the present invention can detect whether the circuit is conductive when the lock hook is embedded in the lock hook plate at a depth of 7mm. If the circuit is not conductive, the elevator can operate normally. Furthermore, the elastic force of the elastic positioning lifter 5 can delay wear at the rotating part or downward concavity of the support seat 13. It can also detect severe wear at the rotating part or downward concavity of the support seat 13 by detecting the breakage of the plastic gasket 5h, combined with the pressure sensor 7, thus avoiding a series of subsequent problems such as rotation failure and excessive engagement depth.

[0047] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An elevator landing door lock wear engagement early warning detection device, characterized by, The device includes a linear push mechanism (3), a detection column (4), an elastic positioning lifter (5), and a contact ramp (6). The elastic positioning lifter (5) and the linear push mechanism (3) are both fixedly installed on the door frame structure. The detection column (4) is fixedly installed on the push end of the linear push mechanism (3). The linear push mechanism (3) is used to push the detection column (4) toward the bent end (1a) of the lock hook (1), so that the detection column (4) lifts the bent end (1a) upward to contact the outer surface of the detection column (4). The bent end (1a) is provided with an inclined surface for the detection column (4) to be lifted. The contact ramp (6) is fixedly installed on the elastic lifting end of the elastic positioning lifter (5). The contact ramp (6) contacts the outer inclined surface of the bent end (1a). The elastic lifting end of the elastic positioning lifter (5) is provided with a clearance hole for the detection column (4) to pass through. The side of the contact ramp (6) close to the detection column (4) is provided with a ramp (6a).

2. A wear engagement pre-warning detection device for an elevator landing door lock as defined in claim 1, characterized in that, The detection column (4) is equipped with a pressure sensor (7) for sensing that the slope (6a) is being pressed.

3. The elevator landing door lock wear engagement early warning detection device as described in claim 1, characterized in that, The elastic positioning lifter (5) includes two connecting rods (5a), a spring (5b), a guide sleeve (5c), a lifting block (5d), and a limiting baffle (5e). The lifting block (5d) can be vertically slidably installed in the guide sleeve (5c). The spring (5b) can provide an upward elastic force to the lifting block (5d). The limiting baffle (5e) is fixedly installed on the top of the lifting block (5d) to limit the lifting block (5d). The two ends of each connecting rod (5a) are respectively connected to the contact inclined plate (6) and the lifting block (5d).

4. The elevator landing door lock wear engagement early warning detection device as described in claim 3, characterized in that, The elastic positioning lifter (5) also includes a support ring (5f) and multiple plastic gaskets (5h). The support ring (5f) is located inside the guide sleeve (5c) and is used to support the bottom of the spring (5b). There is a gap between the support ring (5f) and the bottom of the guide sleeve (5c). Multiple support rings (5f) are horizontally inserted between the support ring (5f) and the guide sleeve (5c).

5. The elevator landing door lock wear engagement early warning detection device as described in claim 4, characterized in that, A sliding column (5j) is fixedly installed in the lower middle part of the lifting block (5d), and the sliding column (5j) is inserted into the support ring (5f).

6. The elevator landing door lock wear engagement early warning detection device as described in claim 5, characterized in that, An impact ring (5k) is fixedly installed on the outer edge of the sliding column (5j), and there is a gap between the bottom of the impact ring (5k) and the top of the support ring (5f).

7. The elevator landing door lock wear engagement early warning detection device as described in claim 1, characterized in that, The linear push mechanism (3) includes an electric push rod (3a), a guide post (3b) and a guide seat (3c). A pressure sensor (7) is connected between the output end of the electric push rod (3a) and the guide post (3b) to sense the compressive force on the guide post (3b). A detection post (4) is fixedly installed at the end of the guide post (3b). The guide post (3b) and the guide seat (3c) are slidably connected.

8. The elevator landing door lock wear engagement early warning detection device as described in claim 6, characterized in that, Two ventilation holes (5d1) are opened on both sides of the lifting block (5d).

9. The elevator landing door lock wear engagement early warning detection device as described in claim 8, characterized in that, The distance between the top of the outer edge of the detection column (4) and the top of the locking plate (2) is 7mm.

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