CN114634081B - Foreign matter clamping prevention device for elevator door and detection method - Google Patents
Foreign matter clamping prevention device for elevator door and detection method Download PDFInfo
- Publication number
- CN114634081B CN114634081B CN202210095148.2A CN202210095148A CN114634081B CN 114634081 B CN114634081 B CN 114634081B CN 202210095148 A CN202210095148 A CN 202210095148A CN 114634081 B CN114634081 B CN 114634081B
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- door
- fixed
- rod
- rotary encoder
- baffle
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 230000002265 prevention Effects 0.000 title claims description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000001960 triggered effect Effects 0.000 abstract description 4
- 230000036632 reaction speed Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000009434 installation Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/06—Door or gate operation of sliding doors
- B66B13/08—Door or gate operation of sliding doors guided for horizontal movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/24—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers
- B66B13/26—Safety devices in passenger lifts, not otherwise provided for, for preventing trapping of passengers between closing doors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/30—Constructional features of doors or gates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
Landscapes
- Elevator Door Apparatuses (AREA)
Abstract
The invention discloses an anti-pinch foreign matter device of an elevator door, which comprises a baffle and a detection switch, wherein the baffle is rotatably arranged on a door frame, the detection switch is fixed on the door frame and is triggered after the baffle rotates, and the detection switch is connected with a control system of the elevator, and is characterized in that: the door frame is provided with an elastic supporting piece used for supporting the baffle, the detection switch adopts a rotary encoder, the rotary encoder is fixed on the door frame through a mounting bracket, and one end of a central shaft of the rotary encoder is connected with a lower rotary disk through a lower one-way bearing. The invention adopts the four-link transmission principle, the rotation angular velocity of the lower rotating disc is larger than that of the baffle plate, and the reaction speed of the rotary encoder is amplified.
Description
Technical Field
The invention relates to the field of elevators, in particular to an elevator door foreign matter clamping prevention device and a detection method.
Background
The door system of an elevator is an important component of an elevator and is an electromechanical integrated device for directly controlling the opening and closing of a door, while the elevator door is a mechanical device for directly contacting a person, and the safety and the importance of the door system are self-evident.
In order to ensure that the car door is smoothly opened, a certain gap is formed between the car door and the door frame of the elevator, so that scratch is avoided between the car door and the door frame of the elevator, a certain potential safety hazard exists in the gap between the car door and the door frame of the elevator, in the process of opening the car door, if a passenger places hands on the surface of the car door, the hands are easily brought into the gap, especially the children population, and the passengers are more easily brought into the gap between the car door and the door frame of the elevator due to thinner fingers of the children and lack of protection consciousness, so that safety accidents are caused.
Application number: chinese patent of CN201980069682.2 discloses a safety device for preventing pinching hands of elevator, which comprises: the structure is simple in plan view by using the magnet and the high frequency/ultrasonic switch, and the passenger is warned to be clamped by warning lamp or sounding warning sound to prevent clamping. In order to prevent abnormal operation due to the influence of magnetic force of the magnets, a high-frequency switch or an ultrasonic switch is used as a switch connected to a controller for controlling the operation of an elevator or an elevator door, which is provided between the first magnets and is provided in the support frame. The rotating frame is rotatably provided at one end of the fixed frame, and the invention of the patent of the invention can prevent the human hand from entering the gap by rotating the rotating frame to start the switch and stop the operation of the elevator door or control the opening and closing speed of the elevator door when the human hand is clamped by the gap. But it has the following drawbacks: the rotating frame needs to be rotated by a certain angle to realize the trigger switch, and the fingers of the child are clamped at a deeper distance from the gap. And at the moment, the space for the rotating frame to continue to rotate is less, and if the finger is clamped, the rotating frame is safely taken out and has certain operation difficulty.
Disclosure of Invention
The invention aims to provide an elevator door foreign matter clamping prevention device and a detection method, which are more accurate in triggering.
The invention solves the problems by adopting the following technical scheme:
the utility model provides a foreign matter device is prevented pressing from both sides by lift-cabin door, includes baffle and detection switch, the baffle rotates to be installed on the door frame, and detection switch is fixed in on the door frame and triggers after the baffle is rotatory, the control system of lift is connected to detection switch, its characterized in that: install the elastic support spare that is used for propping up the baffle on the door frame, detecting switch adopts rotary encoder, rotary encoder passes through the installing support to be fixed in on the door frame, rotary encoder's center pin one end is connected down the rotary disk through lower one-way bearing, and rotary encoder's center pin and lower rotary disk are fixed respectively to lower one-way bearing's inner circle and outer lane, the dog-ear department of baffle is fixed with the support frame, the one end of connecting rod under the support frame is articulated, and the other end of lower connecting rod articulates down the rotary disk, lower one-way bearing direction of operation cooperatees with the rotatory degree of freedom direction of baffle.
Further, preferably, a micro switch for sensing the lower link is fixed to the mounting bracket.
Further, as the preference, the transmitting plate and the receiving plate of elevator light curtain are fixed respectively to two mounting panels, the mounting panels pass through the vertical slidable mounting of slide rail on the door plant, install the light curtain pressure spring that is used for down propping up the mounting panel on the door plant, be fixed with the stopper that is used for spacing on the door plant, rotate on the door plant and install the pulley, the one end of the fixed haulage rope of mounting panel, the haulage rope winds on the pulley, be fixed with the connecting seat on the door plant, slidable mounting has the slide bar on the connecting seat, the one end of slide bar is fixed to the other end of haulage rope, is fixed with the push pedal on the slide bar, the center pin runs through rotary encoder, the other end of center pin passes through last one-way bearing and connects the rotary disk, goes up one-way bearing's inner circle and outer lane and fixes rotary encoder's center pin and last rotary disk respectively, slidable mounting has the driving lever on the door frame, be fixed with the dog on the driving lever, the cover is equipped with the driving lever that is used for driving the driving lever to the initial state's pressure spring on the driving lever to the both ends of last connecting rod articulate driving lever and last rotary disk respectively.
Further preferably, the door panel is fixed to the hanging plate through a hanging piece, and the pulley is rotatably mounted on the hanging piece.
Further, preferably, a guide post is fixed at the middle part of the push plate, and the guide post is horizontally and slidably mounted on the door plate.
Further, preferably, the elastic supporting member is a hydraulic supporting rod, one end of the hydraulic supporting rod is hinged to the door frame, and the other end of the hydraulic supporting rod is hinged to the supporting frame.
Further, preferably, the lower rotating disc and the upper rotating disc are located at a lower end and an upper end of the rotary encoder, respectively.
Compared with the prior art, the invention has the following advantages and effects:
(1) Through the rotation of baffle to drive down the rotary disk through lower connecting rod and rotate, make rotary encoder produce pulse signal, owing to adopted four connecting rod's transmission principle, consequently the rotation angular velocity of lower rotary disk can be greater than the rotation angular velocity of baffle, has enlarged rotary encoder's reaction rate, in the link of opening the door of elevator, the baffle only rotates and is greater than the angle of predetermineeing and just can judge fast whether there is the foreign matter card to go into the gap.
(2) After the rotary encoder is triggered, the baffle can continue to rotate, after the baffle rotates, the gap width becomes larger, the occurrence of the condition that the clamp is more tight is reduced, the gap width can be improved by continuing to rotate the baffle, the fingers are pulled out, and the rescue is convenient.
(3) At the end of the door closing stroke, the transmitting plate and the receiving plate of the elevator light curtain synchronously move upwards, and if strings are positioned between the left door plate and the right door plate, infrared rays between the transmitting plate and the receiving plate can be blocked, so that a control system immediately outputs a door opening signal, the left door plate and the right door plate stop closing and reversely open until the blocking object leaves a warning area, and the elevator door can be normally closed, thereby achieving the aim of safety protection, and avoiding the occurrence of personnel clamping accidents of the elevator.
(4) Because the synchronicity of the push plate at the left door plate side and the push plate at the right door plate side directly influences the synchronicity of the synchronous upward movement of the transmitting plate and the receiving plate of the elevator light curtain, the central shaft of the rotary encoder is driven by the deflector rod, the upper connecting rod, the upper rotary disk and the one-way bearing, if the synchronicity of the central shaft rotation angles of the rotary encoder at the left door plate side and the right door plate side has deviation, the system can rapidly judge the push plate at the left door plate side, and the push plate at the right door plate side specifically reaches and contacts with the stop block firstly, thereby being convenient for later-stage staff to maintain and adjust.
(5) By configuring the upper unidirectional bearing and the lower unidirectional bearing, the unidirectional characteristic of the unidirectional bearing is utilized, and the arrangement of the anti-pinch device in the door opening state and the adjustment and detection of the light curtain in the door closing state can be realized only by configuring one rotary encoder.
Drawings
Fig. 1 is a schematic view of a conventional door panel mounting structure on a car.
Fig. 2 is a schematic layout top view structure of left and right door panels according to an embodiment of the present invention.
Fig. 3 is a schematic top view of fig. 2 at B in accordance with an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of fig. 2 at a according to an embodiment of the present invention.
Fig. 5 is a schematic view of the structure of the baffle plate in the initial state according to the embodiment of the present invention.
Fig. 6 is a schematic view of a baffle plate in a rotating state according to an embodiment of the present invention.
Fig. 7 is a schematic view of the structure of the push plate and the stopper according to the embodiment of the present invention when not in contact.
Fig. 8 is a schematic view of the structure of the push plate and the stopper according to the embodiment of the present invention after contact.
Fig. 9 is a schematic view of an installation structure of a light curtain compression spring according to an embodiment of the present invention.
FIG. 10 is a schematic view of an installation structure of a stopper according to an embodiment of the present invention.
Reference numerals: hanging plate guide rail 11, left hanging plate 12, right hanging plate 13, door plate 2, transmitting plate 31, receiving plate 32, door frame 40, baffle 41, elastic support 42, rotary encoder 43, mounting bracket 44, lower rotary disk 45, lower link 46, support frame 47, micro switch 48, lower one-way bearing 51, upper one-way bearing 52, gap 6, mounting plate 711, slide rail 712, pulley 713, hauling rope 714, connection seat 715, sliding rod 716, push plate 717, guide post 718, upper rotary disk 721, deflector 722, stopper 731, deflector pressure spring 732, upper link 733, light curtain pressure spring 741, stopper 742, and hitching member 8
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and not limited to the following examples.
As shown in fig. 1, this is a schematic installation diagram of a door panel of a conventional car in the market, a hanging plate guide rail 11 is arranged in a door head of an elevator, a left hanging plate 12 and a right hanging plate 13 are arranged in the hanging plate guide rail 11, the left hanging plate 12 and the right hanging plate 13 are provided with a left door panel 2 and a right door panel 2, the left hanging plate 12 and the right hanging plate 13 realize reverse movement through driving of a door machine arranged on the door head, door opening and door closing actions are realized, and a transmitting plate 31 and a receiving plate 32 of a light curtain are respectively fixed on the left door panel 2 and the right door panel 2.
Referring to fig. 2-6, the foreign matter anti-clamping device for an elevator door provided by the embodiment comprises a baffle 41 and a detection switch, wherein the baffle 41 is rotatably mounted on a door frame 40, the detection switch is fixed on the door frame and triggered after the baffle 41 rotates, the detection switch is connected with a control system of the elevator, an elastic supporting piece 42 for supporting the baffle 41 is mounted on the door frame, the detection switch adopts a rotary encoder 43, the rotary encoder 43 is fixed on the door frame through a mounting bracket 44, one end of a central shaft of the rotary encoder 43 is connected with a lower rotary disk 45 through a lower one-way bearing 51, the inner ring and the outer ring of the lower one-way bearing 51 respectively fix the central shaft of the rotary encoder 43 and the lower rotary disk 45, a supporting frame 47 is fixed at a folding corner of the baffle 41, the supporting frame 47 is hinged with one end of a lower connecting rod 46, the other end of the lower connecting rod 46 is hinged with the lower rotary disk 45, the working direction of the lower one-way bearing 51 is matched with the direction of the rotational freedom of the baffle 41, in the opening process of the door plate 2, if hands are clamped in a gap 6 (between the baffle 41 and the door plate 2), as shown in fig. 6), the baffle 41 is pushed by the lower rotary encoder 41 and the lower rotary disk 45 can be driven by the lower rotary encoder system, and the lower rotary encoder 45 can be driven by the lower rotary encoder system to rotate the lower rotary encoder 45, and the lower rotary encoder system, the lower door 45 can be driven by the lower rotary encoder system, and the lower rotary encoder 45. The advantage of adopting above-mentioned structure lies in: by rotating the baffle 41 and driving the lower rotating disc 45 to rotate through the lower connecting rod 46, the rotary encoder 43 generates a pulse signal, and because the four-connecting-rod transmission principle is adopted, the rotation angular velocity (shown as beta in fig. 6) of the lower rotating disc 45 is larger than the rotation angular velocity (shown as alpha in fig. 6) of the baffle 41, the reaction velocity of the rotary encoder 43 is amplified, and in the door opening link of an elevator, the baffle 41 can rapidly judge whether foreign matters (fingers, clothes and the like) are blocked into the gap 6 or not as long as the baffle 41 rotates by more than a preset angle (the angle of the baffle 41 is positively correlated with the pulse number of the rotary encoder 43, and the number of waveforms sent by the rotary encoder 43 corresponding to the preset angle needs to be preset in the system); after the rotary encoder 43 is triggered, the baffle 41 can continue to rotate, after the baffle 41 rotates, the width of the gap 6 becomes larger, the occurrence of the condition that the gap is clamped more tightly is reduced, the width of the gap 6 can be increased by continuing to rotate the baffle 41, and the fingers are pulled out, so that the rescue is convenient.
In this embodiment, a micro switch 48 for sensing the lower link 46 is fixed to the mounting bracket 44. In the initial state of the micro switch 48 (when the baffle 41 is not rotated), the lower connecting rod 46 is pressed to realize power-on, and after the baffle 41 rotates, the lower connecting rod 46 is separated from the micro switch 48, and the micro switch 48 is powered off. After the unexpected situation is relieved, the lower connecting rod 46 presses the micro switch 48 to realize power on, the system judges that the baffle 41 is restored to the initial position, and the control system of the elevator controls the elevator to restore work.
Referring to fig. 4, 7-10, in this embodiment, the transmitting plate 31 and the receiving plate 32 of the elevator light curtain are respectively fixed to two mounting plates 711, the mounting plates 711 are vertically and slidably mounted on the door plate 2 through the sliding rails 712, the light curtain pressure springs 741 for downward pushing the mounting plates 711 are mounted on the door plate 2, the limiting blocks 742 for limiting are fixed on the door plate 2, the limiting blocks 742 push against the lower ends of the mounting plates 711 in the initial state of the elevator light curtain (when the mounting plates 711 do not move upward), the light curtain pressure springs 741 act to keep the two mounting plates 711 at the bottommost part of the whole travel in the initial state, the door plate 2 is rotatably mounted with the pulleys 713, the mounting plates 711 fix one ends of the traction ropes 714, the traction ropes 714 wind around the pulleys 713, the door plate 2 is fixed with the connecting seats 715, the sliding rods 716 are slidably mounted on the connecting seats 715, the other ends of the traction ropes 714 fix one ends of the sliding rods 716, a push plate 717 is fixed on the sliding rod 716, the central shaft penetrates through the rotary encoder 43, the other end of the central shaft is connected with the upper rotary disk 721 through an upper one-way bearing 52, the inner ring and the outer ring of the upper one-way bearing 52 are respectively fixed with the central shaft of the rotary encoder 43 and the upper rotary disk 721, a deflector rod 722 is slidably mounted on the door frame, a stop block 731 is fixed on the deflector rod 722, a deflector rod pressure spring 732 for driving the deflector rod 722 to restore to an initial state is sleeved on the deflector rod 722, the sum of the maximum working elastic force of the deflector rod pressure spring 732 acting on the deflector rod 722 (the elastic force of the deflector rod pressure spring 732 when the deflector rod 722 is pressed to the stroke end by the push plate 717) and the resistance of the upper connecting rod 733 acting on the deflector rod 722 is smaller than the minimum working elastic force of the light curtain pressure spring 741 (the elastic force of the light curtain pressure spring 741 when the deflector rod 722 is not contacted with the push plate 717), both ends of the upper connecting rod 733 are respectively hinged with one end of the deflector rod 722 and the upper rotary disk 721, and the working direction of the upper unidirectional bearing 52 is matched with the sliding direction of the deflector rod 722. The lever 722 drives the upper rotating disk 721 to rotate through the upper connecting rod 733, so that the upper rotating disk 721 drives the rotary encoder 43 through the upper unidirectional bearing 52, and the rotary encoder 43 generates a pulse signal and sends the pulse signal to the control system of the elevator.
In the process of closing the door panel 2, the push plate 717 moves along with the door panel 2, the push plate 717 contacts with the stop block 731 and pushes the stop block 731 to the inner side, when the door panel 2 is about to be completely closed (the process that the distance between the left door panel 2 and the right door panel 2 is 2-3 cm), the stop block 731 is blocked by the door frame 40, the push plate 717 stops moving, the push plate 717 cannot move along with the door panel 2, the door panel 2 continues to move, the transmitting plate 31 and the receiving plate 32 of the elevator light curtain synchronously move upwards, and if a string is positioned between the left door panel 2 and the right door panel 2, the infrared rays between the transmitting plate 31 and the receiving plate 32 are blocked, the control system immediately outputs a door opening signal, the left door panel 2 and the right door panel 2 stop closing and reversely open until the blocking object leaves a warning area, so that the elevator door can be normally closed, the aim of safety protection is achieved, and accidents caused by the elevator clamping can be avoided.
The traditional fixed light curtain mounting structure can not sense articles such as ropes with the size smaller than the light curtain precision, the most common precision in the current market is 2.5mm, 5mm, 10mm, 20mm and the like, the precision is improved by one grade, the price is improved by several times, by adopting the structure, the detection capability of the light curtain can be greatly improved, and the problem of overlarge cost investment caused by simply improving the light curtain precision is solved.
Because the synchronicity (moving distance and corresponding position) of the push plate 717 on the left door plate 2 side and the push plate 717 on the right door plate 2 side directly influence the synchronicity of the synchronous upward movement of the transmitting plate 31 and the receiving plate 32 of the elevator light curtain, the central shaft of the rotary encoder 43 is driven by the deflector 722, the upper connecting rod 733, the upper rotating disk 721 and the unidirectional bearing 5, if the synchronicity of the central shaft rotation angles of the rotary encoder 43 on the left door plate 2 side and the right door plate 2 side has deviation, the system can rapidly judge which of the push plate 717 on the left door plate 2 side and the push plate 717 on the right door plate 2 side firstly reaches and contacts the stop 731, thereby facilitating maintenance and adjustment by later-stage staff.
According to the invention, by configuring the upper unidirectional bearing 5 and the lower unidirectional bearing 5, the arrangement of the anti-pinch device in the door opening state and the adjustment detection of the light curtain in the door closing state can be realized by only configuring one rotary encoder 43 by utilizing the unidirectional characteristic of the unidirectional bearing 5. Specific:
(1) In the process of recovering the baffle 41 to the initial state, the lower rotary disk 45 reversely rotates due to the unidirectional characteristic of the unidirectional bearing 5, the lower unidirectional bearing 51 does not drive the rotary encoder 43, and in the process, the unidirectional characteristic of the unidirectional bearing 5 is utilized, so that the encoder is prevented from generating pulse signals to be sent to the control system of the elevator in the process of recovering the baffle 41 to the initial state.
(2) During the door opening process, during the process of restoring the deflector rod 722 to the initial state, the upper rotary disk 721 reversely rotates due to the unidirectional characteristic of the unidirectional bearing 5, the upper unidirectional bearing 52 does not drive the rotary encoder 43, and during the process, the unidirectional characteristic of the unidirectional bearing 5 is utilized, so that the encoder is prevented from generating pulse signals to be sent to the control system of the elevator during the process of restoring the deflector rod 722 to the initial state.
In this embodiment, the door panel 2 is fixed to the hanging plate by the hanging member 8, and the pulley 713 is rotatably mounted on the hanging member 8. A guide post 718 is fixed at the middle of the push plate 717, and the guide post 718 is horizontally slidably mounted on the door panel 2. The elastic support member 42 is a hydraulic support rod, one end of the hydraulic support rod is hinged on the door frame, and the other end of the hydraulic support rod is hinged on the supporting frame 47. The lower rotating disk 45 and the upper rotating disk 721 are located at the lower end and the upper end of the rotary encoder 43, respectively.
The foregoing description of the invention is merely exemplary of the invention. Those skilled in the art to which the invention pertains will be able to make numerous modifications or additions to the specific embodiments described or to substitute them in a similar way, without departing from the spirit of the invention or beyond the scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a foreign matter device is prevented pressing from both sides by lift-cabin door, includes baffle and detection switch, the baffle rotates to be installed on the door frame, and detection switch is fixed in on the door frame and triggers after the baffle is rotatory, the control system of lift is connected to detection switch, its characterized in that: install the elastic support spare that is used for propping up the baffle on the door frame, detecting switch adopts rotary encoder, rotary encoder passes through the installing support to be fixed in on the door frame, rotary encoder's center pin one end is connected down the rotary disk through lower one-way bearing, and rotary encoder's center pin and lower rotary disk are fixed respectively to lower one-way bearing's inner circle and outer lane, the dog-ear department of baffle is fixed with the support frame, the one end of connecting rod under the support frame is articulated, and the other end of lower connecting rod articulates down the rotary disk, lower one-way bearing direction of operation cooperatees with the rotatory degree of freedom direction of baffle.
2. The foreign matter prevention device for elevator doors according to claim 1, wherein: the mounting bracket is fixedly provided with a micro switch of the lower connecting rod for sensing.
3. The foreign matter prevention device for elevator doors according to claim 1, wherein: the transmission plate and the receiving plate of the elevator light curtain are respectively fixed to two mounting plates, the mounting plates are vertically and slidably mounted on a door plate through sliding rails, a light curtain pressure spring used for pushing the mounting plates downwards is mounted on the door plate, a limiting block used for limiting is fixed on the door plate, a pulley is rotatably mounted on the door plate, one end of a traction rope is fixed on the mounting plate, the traction rope is wound on the pulley, a connecting seat is fixed on the door plate, a sliding rod is slidably mounted on the connecting seat, one end of the sliding rod is fixed on the other end of the traction rope, a push plate is fixed on the sliding rod, the push plate is located on one side of the connecting seat and is slidably mounted on the connecting seat along with the sliding rod, the central shaft penetrates through the rotary encoder, the other end of the central shaft is connected with an upper rotary disc through an upper one-way bearing, an inner ring and an outer ring of the upper one-way bearing are respectively fixed on the central shaft of the rotary encoder and the upper rotary disc, a stop block is fixedly arranged on the door frame, a deflector is sleeved on the deflector rod, the deflector rod is sleeved on the deflector rod and is provided with a deflector rod used for driving the deflector rod to restore to an initial state, one end of the deflector rod is sleeved on the driving deflector rod, one end of the deflector rod is abutted on the other end of the rotary rod, the deflector rod is abutted to one end on the rotary encoder is rotatably driven by the rotating rod through the inner ring and the outer ring is rotatably supports the inner ring of the rotary encoder, and the deflector rod.
4. The foreign matter prevention apparatus for elevator doors according to claim 3, wherein: the door plate is fixed on the hanging plate through the hanging piece, and the pulley is rotatably installed on the hanging piece.
5. The foreign matter prevention apparatus for elevator doors according to claim 3, wherein: the middle part of push pedal is fixed with the guide post, guide post horizontal sliding mounting is on the door plant.
6. The foreign matter prevention device for elevator doors according to claim 1, wherein: the elastic support piece adopts a hydraulic support rod, one end of the hydraulic support rod is hinged to the door frame, and the other end of the hydraulic support rod is hinged to the support frame.
7. The foreign matter prevention device for elevator doors according to claim 1, wherein: the lower rotating disc and the upper rotating disc are respectively positioned at the lower end and the upper end of the rotary encoder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095148.2A CN114634081B (en) | 2022-01-26 | 2022-01-26 | Foreign matter clamping prevention device for elevator door and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210095148.2A CN114634081B (en) | 2022-01-26 | 2022-01-26 | Foreign matter clamping prevention device for elevator door and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114634081A CN114634081A (en) | 2022-06-17 |
| CN114634081B true CN114634081B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210095148.2A Active CN114634081B (en) | 2022-01-26 | 2022-01-26 | Foreign matter clamping prevention device for elevator door and detection method |
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| CN111819146A (en) * | 2018-03-20 | 2020-10-23 | 尹一植 | Anti-pinch safety device for elevator |
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| CN114634081A (en) | 2022-06-17 |
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Denomination of invention: An elevator door anti pinch foreign object device and detection method Granted publication date: 20230804 Pledgee: China Construction Bank Corporation Wuyi Sub-branch Pledgor: Zhejiang Zhiling Technology Co.,Ltd. Registration number: Y2024980040713 |