CN103569836A - Elevator car door lock opening device and elevator - Google Patents

Abstract

The invention discloses an elevator car door lock opening device, an elevator, and an elevator car door lock opening device, which include a door knife base, a push rod, a guide rail, a spring, a first limiting wheel, and a second limiting wheel. On the push rod, the first limit wheel and the second limit wheel are installed on the base of the door knife. The first limit wheel and the second limit wheel respectively touch the two sides of the guide rail. One end of the spring is connected to the base, and the other end is connected to the Push rod connection. Open the hall door slightly, under the action of the static roller of the hall door lock, the spring is compressed, and the push rod continues to move for a certain distance, so that the hall door has a certain movement space, so that the hall door can continue to be opened for a certain distance, so that The opening gap of the hall door is greatly increased, and the stroke difference between the hall door and the elevator car door is greatly increased. There is enough space for people to enter, so as to operate the unlocking device and finally open the car door. Compared with ordinary elevators, it shortens the The time to open the elevator car door from outside the hall door improves the success rate of opening the elevator car door.

Description

Elevator car door lock opening device, elevator

technical field

The invention relates to the technical field of elevator car door opening, in particular to an elevator car door lock opening device and an elevator.

Background technique

According to relevant regulations, the sill line of the elevator car and the shaft wall cannot exceed the specified distance, but the car door equipped with car door locks is not limited by this distance. Occurred from time to time, many safety accidents occurred, therefore, it has become a trend for elevators to be equipped with car door locks.

A car door lock independently developed by our company, as shown in Figure 1, the car door lock includes a left swing rod 101 and a right swing rod 102 rotatably connected to the door hanging plate, and a hall door fixedly connected to the hall door 300 Lock the static roller 301 and the hall door lock roller 302. When the elevator car is in the non-leveling area, the car door lock is in the locked state and the car door cannot be opened. When the elevator car reaches the leveling floor, the car door motor starts to drive the door. The hanging plate moves to open the elevator car door 200. During the opening process of the elevator car door 20, the right swing rod 102 touches the hall door lock roller 302, and the right swing rod 102 touches the hall door lock roller 302 to generate resistance. Thereby, a certain distance of swing will occur, and finally the car door lock hook 215 will be lifted, the car door lock will be opened, and the car door will drive the hall door to open. 302 will touch the right swing rod 102, through the force between the hall door lock roller 302 and the right swing rod 102, the car door lock hook 215 is lifted, the car door lock is in the open state, and the hall door continues to close, thereby driving The car doors are closed together. When the elevator is powered off, the passengers in the elevator car can open the elevator car door 200 with a certain amount of force. After the elevator car door 200 is opened by a certain distance, the right swing rod 102 will touch the hall. The door lock moves the roller 302, so that the car door lock hook 215 is lifted by the force between the right swing rod 102 and the hall door lock roller 302, and the car door lock is opened, so that the elevator car door 200 can be opened. However, when the elevator People in the car are disadvantaged groups, such as old people, children or passengers in the elevator, when dizziness occurs, there is no way to open the elevator car door 200 from the elevator car, and the rescuer can only operate the unlocking device from outside the hall door 217 to open the car door. Rescuers first open the hall door with the triangular key. When the hall door is opened for a small distance, the hall door lock static roller 301 will touch the left swing rod 101, which will drive the elevator car door 200 to move very little. Then, the car door lock hook 215 will hook the lock cylinder 216, so that the elevator car door 200 cannot be opened further, and at this time, the fastening wheel 103 reaches the highest point of the fastening wheel guide groove 104, thereby It is impossible to make the fastening wheel 103 continue to move upwards, which prevents the two swing arms of the left swing link 101 from moving counterclockwise, so that the left swing link 101 has no room to continue moving to the left, and at this time, the gap opened by the hall door 300 It is very small, which makes it difficult for rescuers to reach into the hall door 300 and the top of the elevator car door, so that it is difficult to pull to the unlocking device 217 located there, which ultimately reduces the success rate of rescue, delays the rescue time, and leads to safety accidents happened. Therefore, an elevator car door lock opening auxiliary device that can well help rescuers to open the elevator car door from outside the hall seems very necessary.

Contents of the invention

The object of the present invention is to provide an elevator car door lock opening device which is convenient for opening the elevator car door from the outside.

Another object of the present invention is to provide an elevator in which the doors of the elevator can be easily opened from the outside.

In order to realize the purpose of the present invention, the technical scheme that takes is:

An elevator car door lock opening device, comprising a door knife base, a push rod, a guide rail, a spring, a first limit wheel, a second limit wheel, one end of the guide rail is connected to the push rod, the first limit wheel, the second limit wheel The position wheels are all installed on the door knife base, the first limit wheel and the second limit wheel touch the both sides of the guide rail respectively, one end of the spring is connected with the door knife base, and the other end is connected with the push rod.

When the elevator is powered off, it is necessary to open the elevator car door from outside the hall door. First, use the triangular key to unlock the hall door lock, and push the hall door to both sides with a certain amount of force. The hall door lock static roller moves with the hall door, and the hall door After a certain distance is opened, the static roller of the hall door lock will touch the push rod. Since the push rod is fixedly connected with the guide rail, both sides of the guide rail will touch the first limit wheel and the second limit wheel. The two positioning wheels form the accommodation groove of the guide rail. The guide rail can move back and forth in the accommodation groove, thereby driving the push rod to move forward and backward together. When the hall door continues to move, the hall door lock static roller pushes the push rod and drives the elevator car door to open very fast If the distance at one end is small, after the elevator car door moves a certain distance, the car door lock hook interferes with the lock cylinder, and the elevator car door cannot be opened. , the spring is compressed, and the push rod continues to move for a certain distance, so that the hall door has a certain movement space, so that the hall door can continue to be opened for a certain distance. In this way, the opening gap of the hall door can be increased a lot, and the hall door and The stroke difference of the elevator car door is greatly increased, and there is enough space for people to enter, so as to operate the unlocking device and finally open the car door. Compared with the general elevator, the time for opening the elevator car door from outside the hall door is shortened and the improvement is improved. The success rate of opening the elevator car door is improved; when the person outside the hall door lets go, the compressed spring will recover its deformation, thereby pushing the hall door to move in the closing direction, reducing the stroke difference between the hall door and the car door, and pushing the lever to the hall door. The power of the door increases the self-closing force of the hall door and improves the probability of the hall door lock closing.

The technical scheme is further described below:

In one of the embodiments, the guide rail includes a first guide rail and a second guide rail, the first limiting wheel touches on the side of the first guide rail away from the second guide rail, and the second limiting wheel touches on the second guide rail and is away from the first guide rail. side. The two guide rails work together to effectively prevent the deflection of the guide rail when moving, and the guide rail runs more stably.

In one of the embodiments, the elevator car door lock opening device also includes a guide rod and a guide rod seat, the guide rod seat is fixed on the door knife base, a through hole is opened on the guide rod seat, and one end of the guide rod is fixed on the push rod. The other end passes through the through hole and cooperates with the through hole. The spring is sheathed on the guide rod, and the two ends of the spring respectively resist the push rod and the guide rod seat. The guide rod plays a role in positioning the spring sleeved on the guide rod, preventing the spring from deflecting when it is deformed under pressure, so that the spring can only move in the axial direction of the guide rod. When the spring is compressed, one end of the guide rod will move Protrude from the through hole of the guide rod seat.

In one of the embodiments, the elevator car door lock opening device further includes a limit block, the limit block is fixed on the bottom plate of the door knife, and the push rod touches the limit block when it moves to a limit position. When the push rod moves to the left under the action of the static roller of the hall door lock, and moves to the limit position corresponding to the movement of the push rod when it is farthest from the initial state, at this time, the push rod will touch the limit block, which prevents the push rod from being pushed. The rod moves further, so that the range of motion of the push rod is controllable and will not exceed the limit state of the spring being compressed, so that the spring will not be crushed and the spring will be protected.

In one of the embodiments, a buffer pad is provided on the side of the limit block close to the push rod. Through the design of the buffer pad, too much collision between the push rod and the limit block is prevented, and the limit block and the push rod are protected.

In one embodiment, the buffer pad is a silicone pad or a rubber pad.

In one of the embodiments, the elevator car door lock opening device also includes a first swing arm, a second swing arm and a drive swing link, the first swing arm and the second swing arm are both rotatably connected to the door knife base, and the drive Two ends of the swing rod are respectively rotatably connected to the first swing arm and the second swing arm. When the elevator is working normally, the elevator car door is opened first. After the elevator car door moves for a certain distance, the driving swing rod will touch the hall door lock roller fixedly connected with the hall door, and the elevator car door continues to move, which will make the driving swing rod There is an interaction force with the hall door lock roller. Under the action of this force, the driving swing rod will touch the car door lock hook, so that the car door lock hook is lifted, and the car door lock hook is separated from the lock column. The car door lock is opened, and under the push of the driving swing rod, the hall door is opened following the elevator car door. With this structure, it is easy to use.

In one embodiment, the first swing arm and the second swing arm are the same swing arm, and the first swing arm is parallel to the second swing arm. The first swing arm is parallel to the second swing arm, so that the two swing arms swing in the same direction, so that the mutual interference between the two arms will not occur.

The present invention also provides an elevator, comprising a door knife bottom plate, a hall door, a hall door lock static roller, a lock cylinder, a car door lock hook, an unlocking device, the above-mentioned elevator car door lock opening device, and a rotatable installation for the car door lock hook. On the bottom plate of the door knife, the car door lock hook matches the lock cylinder. One end of the unlocking device is connected to the end of the car door lock hook away from the lock cylinder, and the other end is placed above the door gap of the hall door. The hall door and the hall door lock static roller Fixedly connected, the hall door lock static roller is located at the side of the swing bar of the guide groove close to the unlocking device.

After opening the hall door lock, by turning the hall door, the static roller of the hall door lock fixedly connected to the hall door will touch the push rod, and finally drive the push rod to move, and the stroke difference between the hall door and the elevator car door will become larger. Thereby enough space is arranged to make staff stretch in from the slit that hall door is opened, is convenient to pull unlocking device, realizes car door lock to open.

In one of the embodiments, the unlocking device is a pull cord or a pull rod. By pulling the end of the pull rope or the pull rod, the car door lock hook can be rotated through the principle of leverage, so that the car door lock hook is separated from the lock cylinder, and the car door lock is opened.

The advantages of the present invention are:

In the elevator car door lock opening auxiliary device of the present invention, when the elevator is powered off, it is necessary to open the elevator car door from the outside of the hall door. The static roller of the door lock moves together with the hall door. After the hall door is opened for a certain distance, the static roller of the hall door lock will touch the push rod. Since the push rod is fixedly connected with the guide rail, both sides of the guide rail will interfere with the first limit wheel and the second limit wheel. The position wheel, the first limit wheel and the second limit wheel form the accommodation groove of the guide rail. The guide rail can move back and forth in the accommodation groove, thereby driving the push rod to move forward and backward together. When the hall door continues to move, the hall door lock will The static roller pushes the push rod and drives the elevator car door to open a small distance. After the elevator car door moves a certain distance, the car door lock hook interferes with the lock cylinder, and the elevator car door cannot be opened further. At this time, force it open slightly The hall door, under the action of the static roller of the hall door lock, the spring is compressed, and the push rod continues to move for a certain distance, so that the hall door has a certain movement space, so that the hall door can continue to be opened for a certain distance. The opening gap of the hall door is greatly increased, and the stroke difference between the hall door and the elevator car door is greatly increased. There is enough space for people to enter, so as to operate the unlocking device and finally open the car door. Compared with the general elevator, it shortens the The time it takes to open the elevator car door from outside the hall door improves the success rate of opening the elevator car door; when the person outside the hall door lets go, the compressed spring will recover its deformation, thereby pushing the hall door to move in the closing direction and shrinking the hall door It is different from the formation of the car door, and the push rod gives a power to the hall door, which increases the self-closing force of the hall door and improves the probability of the hall door lock closing. In the elevator of the present invention, after the hall door lock is opened, by turning the hall door, the static roller of the hall door lock fixedly connected with the hall door will touch the push rod, and finally drive the push rod to move. The stroke difference becomes larger, so that there is enough space for people to extend their hands from the opening gap of the hall door, which is convenient for pulling the unlocking device to realize the opening of the car door lock.

Description of drawings

Fig. 1 is the schematic diagram of general elevator car door lock;

Fig. 2 is the schematic diagram of elevator of the present invention;

Fig. 3 is a schematic diagram when the push rod is in the initial state in the elevator car door lock opening device of the present invention;

Fig. 4 is a schematic diagram of the push rod in the limit state in the elevator car door lock opening device of the present invention.

Explanation of reference signs:

101. left swing rod, 102. right swing rod, 103. tie wheel, 104. tie wheel guide groove, 200. elevator car door, 201. door knife base, 202. push rod, 203. guide rail, 2031. One guide rail, 2032. the second guide rail, 2041. the first limit wheel, 2042. the second limit wheel, 205. spring, 206. guide rod, 207. guide rod seat, 208. limit block, 209. the first Swing arm, 210. Second swing arm, 211. Driving swing lever, 212. Car door lock hook, 213. Lock column, 214. Pull rod, 300. Hall door, 301. Hall door lock static roller, 302. Hall door lock Moving roller, 303. door gap.

Detailed ways

Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

Referring to Figures 2-4, in an embodiment of the present invention, an elevator car door lock opening device includes a door knife base 201, a push rod 202, a guide rail 203, a spring 205, a first limiting wheel 2041, and a second limiting wheel. Wheel 2042, one end of guide rail 203 is connected on the push rod 202, the first limit wheel 2041, the second limit wheel 2042 are all installed on the door knife base 201, the first limit wheel 2041, the second limit wheel 2042 respectively conflict On both sides of the guide rail 203 , one end of the spring 205 is connected with the door knife base 201 , and the other end of the spring 205 is connected with the push rod 202 .

When the elevator is powered off, it is necessary to open the elevator car door 200 from outside the hall door 300, first unlock the door lock of the hall door 300 with a triangular key, and push the hall door 300 to both sides with a certain amount of force, the hall door lock static roller 301 follows the hall door 300 move together, after the hall door 300 is opened for a certain distance, the hall door lock static roller 301 will touch the push rod 202, and because the push rod 202 is fixedly connected with the guide rail 203, the two sides of the guide rail 203 interfere with the first limiting wheel 2041, the second The spacer wheel 2042, the first spacer wheel 2041, and the second spacer wheel 2042 both form the accommodation groove of the guide rail 203, and the guide rail 203 can move back and forth in the accommodation groove, thereby driving the push rod 202 to move forward and backward together. When 300 continues to move, the hall door lock static roller 301 pushes the push rod 202 and drives the elevator car door 200 to open a small end distance. After the elevator car door 200 moves a certain distance, the car door lock hook 212 interferes with the lock cylinder 213, and the elevator The car door 200 cannot be opened further. At this time, the hall door 300 is opened with a little force. Under the action of the hall door lock static roller 301, the spring 205 is compressed, and the push rod 202 continues to move for a certain distance, so that the hall door 300 has a certain movement. space, so that the hall door 300 can continue to be opened for a certain distance. In this way, the opening gap of the hall door 300 can be increased a lot, and the stroke difference between the hall door 300 and the elevator car door 200 can be increased a lot, and there is enough space It is convenient for manual entry, so as to operate the unlocking device and finally open the car door. Compared with the general elevator, it shortens the time to open the elevator car door 200 from outside the hall door 300, and improves the success rate of opening the elevator car door 200; After the person outside the door 300 lets go, the compressed spring 205 will resume its deformation, thereby pushing the hall door 300 to move in the closing direction, reducing the formation difference between the hall door 300 and the car door 200, and the push rod 202 gives a power to the hall door 300, The self-closing force of the hall door 300 is increased to improve the probability of the hall door lock being closed.

The guide rail 203 includes a first guide rail 2031 and a second guide rail 2032. The first limit wheel 2041 touches the side of the first guide rail 2031 away from the second guide rail 2032, and the second limit wheel 2042 touches the second guide rail 2032 away from the first guide rail 2031. side. The two guide rails work together to effectively prevent the deflection of the guide rail 203 when moving, and the guide rail 203 runs more stably.

The elevator car door lock opening device also includes a guide rod 206, a guide rod seat 207, the guide rod seat 207 is fixed on the door knife base 201, a through hole is provided on the guide rod seat 207, and one end of the guide rod 206 is fixed on the push rod 202, The other end of the guide rod 206 passes through the through hole and matches with the through hole. The spring 205 is sheathed on the guide rod 206 , and the two ends of the spring 205 resist the push rod 202 and the guide rod seat 207 respectively. The guide rod 206 plays a role in positioning the spring 205 sleeved on the guide rod 206, preventing the spring 205 from deflecting when it is deformed under pressure, so that the spring 205 can only move in the axial direction of the guide rod 206. When the spring 205 is moved When compressed, one end of the guide rod 206 will protrude from the through hole of the guide rod seat 207 .

The elevator car door lock opening device also includes a limit block 208, which is fixed on the door knife bottom plate 201, and the push rod 202 is in contact with the limit block 208 when it moves to a limit position. When the push rod 202 moves to the left under the action of the hall door lock static roller 301, and moves to the limit position corresponding to the movement of the push rod 202 when it is farthest from the initial state, at this moment, the push rod 202 will touch the limit block 208, The limit block 208 prevents the push rod 202 from moving further, so that the range of motion of the push rod 202 is controllable, and the spring 205 will not be compressed beyond the limit state, so that the spring 205 will not be crushed, and the spring 205 is protected.

A buffer pad is provided on a side of the limiting block 208 close to the push rod 202 . Through the design of the buffer pad, too much collision between the push rod 202 and the limit block 208 is prevented, and the limit block 208 and the push rod 202 are protected. The buffer pad is a silicone pad or a rubber pad.

The elevator car door lock opening device also includes a first swing arm 209, a second swing arm 210 and a drive swing link 211, the first swing arm 209 and the second swing arm 210 are rotatably connected to the door knife base 201, and the drive swing Both ends of the rod 211 are rotatably connected to the first swing arm 209 and the second swing arm 210 respectively. When the elevator works normally, the elevator car door 200 is opened first, and after the elevator car door 200 moves for a certain distance, the driving swing rod 211 will touch the hall door lock roller 302 fixedly connected with the hall door 300, and the elevator car door 200 continues to move, Thereby, there will be an interactive force between the drive swing rod 211 and the hall door lock roller 302. Under the action of this force, the drive swing rod 211 will interfere with the car door lock hook 212, thereby causing the car door lock hook 212 to lift. Lifting, the car door lock hook 212 is disengaged from the lock cylinder 213, the car door lock is opened, and under the promotion of the driving swing rod 211, the hall door 300 is opened following the elevator car door 200. This structure is easy to use.

The first swing arm 209 and the second swing arm 210 are the same swing arm, and the first swing arm 209 is parallel to the second swing arm 210 . The first swing arm 209 and the second swing arm 210 are parallel to each other, so that the two swing arms swing in the same direction, so that there is no mutual interference between the two swing arms.

The present invention also provides an elevator, comprising a door knife bottom plate 201, a hall door 300, a hall door lock static roller 301, a lock cylinder 213, a car door lock hook 212, an unlocking device, and the above-mentioned elevator car door lock opening device. The device is a pull rod 214, the car door lock hook 212 is rotatably installed on the door knife base plate 201, the car door lock hook 212 is matched with the lock cylinder 213, one end of the pull rod 214 is connected with the end of the car door lock hook 212 away from the lock cylinder 213, The other end of the pull rod 214 is placed above the door slit 303 of the hall door 300 , the hall door 300 is fixedly connected with the hall door lock static roller 301 , and the hall door lock static roller 301 is located on the side of the push rod 202 close to the pull rod 214 .

After the hall door 300 is unlocked, by turning the hall door 300, the hall door lock static roller 301 fixedly connected with the hall door 300 will touch the push rod 202, and finally drive the push rod 202 to move, the hall door 300 and the elevator car door 200 The stroke difference between them becomes larger, so that there is enough space for the staff to stretch in from the opened door slit 303 of the hall door 300, so as to facilitate pulling the pull rod 214 to realize the unlocking of the car door lock. By pulling the end of the pull rod 214, the car door lock hook 212 can be rotated through the principle of leverage, so that the car door lock hook 212 is separated from the lock cylinder 213, and the car door lock is opened. In other embodiments, the unlocking device may also be a pull cord.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (7)

1. An elevator car door lock opening device is characterized in that it comprises a door knife base, a push rod, a guide rail, a spring, a first spacer wheel, and a second spacer wheel, and one end of the guide rail is connected to the push rod, and the first limiter The position wheel and the second limit wheel are all installed on the door knife base, and the first limit wheel and the second limit wheel touch the both sides of the guide rail respectively, and one end of the spring is connected with the door knife base, and the other end is connected with the push rod. 2. The elevator car door lock opening device according to claim 1, characterized in that, the guide rails include a first guide rail and a second guide rail, the first limiting wheel is in contact with the side of the first guide rail far away from the second guide rail, and the second The two limit wheels interfere with the side of the second guide rail away from the first guide rail. 3. The elevator car door lock opening device according to claim 1 or 2, further comprising a guide rod and a guide rod seat, the guide rod seat is fixed on the door knife base, and a through hole is provided on the guide rod seat, One end of the guide rod is fixed on the push rod, and the other end passes through the through hole and cooperates with the through hole. The spring is sleeved on the guide rod, and the two ends of the spring respectively resist the push rod and the guide rod seat. 4. The elevator car door lock opening device according to claim 1 or 2, characterized in that it also includes a limit block, the limit block is fixed on the bottom plate of the door knife, and when the push rod moves to the limit position, it interferes with the limit position piece. 5. The elevator car door lock opening device according to claim 1, further comprising a first swing arm, a second swing arm and a driving swing link, and the first swing arm and the second swing arm are all rotatably connected. On the base of the door knife, two ends of the driving swing rod are respectively rotatably connected to the first swing arm and the second swing arm. 6. An elevator, characterized in that it comprises a door knife base plate, a hall door, a hall door lock static roller, a lock cylinder, a car door lock hook, an unlocking device, the elevator car door as claimed in any one of claims 1-5 Lock opening device, the car door lock hook is rotatably installed on the door knife bottom plate, the car door lock hook is matched with the lock cylinder, one end of the unlocking device is connected with the end of the car door lock hook far away from the lock cylinder, and the other end is placed on the hall door. Above the door slit, the hall door is fixedly connected with the hall door lock static roller, and the hall door lock static roller is located at the side of the swing bar of the guide groove close to the unlocking device. 7. The elevator according to claim 6, characterized in that, the unlocking device is a pull rope or a pull rod.

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