CN103552900B - Auxiliary device for opening elevator car door lock and elevator - Google Patents

Abstract

The invention discloses an elevator car door lock opening auxiliary device and an elevator. The elevator car door lock opening auxiliary device is installed on a door knife base, including a first swing arm, a second swing arm, a guide groove swing rod, a counterweight, The counterweight connector, the two ends of the guide slot swing rod are rotatably connected to the first swing arm and the second swing arm respectively, the first swing arm and the second swing arm are rotatably connected to the door knife base, and the counterweight connector is the first One end is connected to the counterweight, and the second end is fixed on the base of the door knife or the swing bar of the guide slot. There is a guide slot in the swing bar of the guide slot. slots to match. Open the hall door with a little force, and under the action of the static roller of the hall door lock, the swing rod of the guide groove will rotate counterclockwise, so that the hall door can continue to be opened for a certain distance. In this way, the hall door and the elevator car door The stroke difference is increased, and there is enough space for manpower to enter, thereby operating the unlocking device, opening the car door, and shortening the time for opening the elevator car door.

Description

Elevator car door lock opening auxiliary 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 auxiliary 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, making 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 auxiliary device which facilitates 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 auxiliary device for unlocking an elevator car door lock, installed on a door knife base, comprising a first swing arm, a second swing arm, a guide slot swing bar, a counterweight, and a counterweight connector. The first swing arm and the second swing arm are rotatably connected, the first swing arm and the second swing arm are rotatably connected to the door knife base, the first end of the counterweight connector is connected to the counterweight, and the second end is fixed on the counterweight On the door knife base or the guide slot swing bar, a guide slot is provided in the guide slot swing bar, and the counterweight is placed in the guide slot in the guide slot swing bar and cooperates with the guide slot.

When it is necessary to open the elevator car door from outside the hall door, first use the triangular key to unlock the door lock of the hall door, push the hall door to both sides with a certain amount of force, the static roller of the hall door lock will move with the hall door, and the hall door will open a certain distance Finally, the static roller of the hall door lock will touch the swing rod of the guide groove. When the hall door continues to move, the static roller of the hall door lock will push the swing rod of the guide groove and drive the elevator car door to open a small distance at one end, and the elevator car door will move at a certain distance. After the distance, the car door lock hook interferes with the lock cylinder, and the elevator car door cannot be opened any longer. At this time, the hall door is opened with a little force. Under the action of the hall door lock static roller, the guide groove swing rod will rotate clockwise. Drive the first swing arm and the second swing arm to rotate clockwise together, 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 greatly increased, and the stroke of the hall door and the elevator car door The gap increases a lot, 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, it shortens the time to open the elevator car door from outside the hall door, and improves the speed of opening the elevator car door. The success rate; when the swing rod of the guide groove rotates clockwise, the counterweight in the guide groove swing rod and the guide groove have a certain relative movement. Make the swing bar of the guide slot rotate counterclockwise and reset the swing bar of the guide slot to contact with the static roller of the hall door lock, push the hall door to move in the closing direction, reduce the formation difference between the hall door and the car door, and the swing bar of the guide slot gives a power to the hall door, The self-closing force of the hall door is increased, and the probability of closing the hall door lock is improved.

The technical scheme is further described below:

In one of the embodiments, the auxiliary device for opening the elevator car door lock also includes a wire fixing device and a tensioning wheel, both of which are installed on the base of the door knife, and the counterweight connecting part is a counterweight connecting rope , the second end of the counterweight connecting rope is fixedly connected to the door knife base through the wire fixing device, and the counterweight connecting rope is tightened by the tensioning wheel. The counterweight connecting rope is tightened by the tensioning wheel, and by adjusting the installation position of the tensioning wheel, the tension of the counterweight connecting rope can be adjusted, thereby facilitating use.

In one of the embodiments, the elevator car door lock opening auxiliary device further includes a pinch wheel, which is fixed on the base of the door knife and located at a position where the tension wheel is tangent to the counterweight connecting rope. Under the action of the pinch wheel, when the swing bar of the guide groove is lifted, the counterweight will not swing out of the range of the cross section of the swing bar of the guide groove when it is lifted, and the counterweight connecting rope will not escape from the tensioning wheel.

In one of the embodiments, a wire clamping groove is provided on the wheel surface of the tensioning wheel. The clamping groove on the wheel surface of the tensioning wheel is used to block the counterweight connecting rope placed in the clamping groove to prevent the counterweight connecting rope from coming off the tensioning wheel.

In one of the embodiments, the tension wheel is rotatably installed on the base of the door knife.

In one of the embodiments, the tensioning wheel is detachably installed on the base of the door knife. The detachable tension wheel is convenient for adjusting the installation position of the tension wheel, thereby adjusting the tension of the counterweight connecting rope.

In one of the embodiments, the auxiliary device for opening the elevator car door lock also includes a first limiting device and a second limiting device respectively fixed on the base of the door knife. On both sides of the swing bar of the slot, when the swing bar of the guide slot is in a natural state, the swing bar of the guide slot touches the first limiter, and when the swing bar of the guide slot is lifted to the highest point, the swing bar of the guide slot touches the second limiter. When there is no interaction force between the swing rod of the guide groove and the static roller of the hall door lock, the swing rod of the guide groove is in a natural state; position, the swing bar of the guide slot will touch the second limit device, and through the joint action of the first limit device and the second limit device, the swing bar of the guide slot will move in this area, making the whole process controllable and making the Devices are more secure.

In one of the embodiments, a buffer pad is provided on the side of the first limiting device close to the swing bar of the guide groove. Through the design of the buffer pad, too much collision between the swing rod of the guide groove and the first limiting device is prevented, and the first limiting device and the swing rod of the guide groove are protected.

In one of the embodiments, a buffer pad is provided on a side of the second limiting device that is close to the swing bar of the guide groove. Through the design of the buffer pad, too much collision between the swing rod of the guide groove and the second limiting device is prevented, and the second limiting device and the swing rod of the guide groove are protected.

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

In one of the embodiments, the upper end of the guide slot in the swing bar of the guide slot is provided with a connecting part, the second end of the mating connector is fixed on the connecting part of the swing bar of the guide slot, and the counterweight connecting part is a rope or a spring. By directly fixing the counterweight to the upper end of the swing rod of the guide groove, the counterweight and the swing rod of the guide groove form an integral body, which is convenient for installation.

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.

In one of the embodiments, the auxiliary device for unlocking the elevator car door lock also includes a third swing arm, a fourth swing arm and a driving swing link, the third swing arm and the fourth swing arm are rotatably connected to the door knife base, The two ends of the driving swing link are respectively rotatably connected to the third swing arm and the fourth 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 The force that interacts 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 cylinder. 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.

The present invention also provides an elevator, including a door knife bottom plate, a hall door, a hall door lock static roller, a lock column, a car door lock hook, an unlocking device, and the above-mentioned elevator car door lock opening auxiliary device. The car door lock hook is rotatably installed on 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 far away from the lock cylinder, and the other end is placed above the door gap of the hall door. The hall door is fixed to the hall door lock static roller. Connected, the hall door lock static roller is located on the side of the guide groove swing bar 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 swing rod of the guide groove, and finally drive the swing rod of the guide groove to rotate, and the stroke between the hall door and the elevator car door The 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.

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 it is necessary to open the elevator car door from the outside of the hall door, the door lock of the hall door is first opened with a triangular key, and the hall door is pushed to both sides with a certain amount of force, and the hall door lock is static. The rollers move together with the hall door. After the hall door is opened for a certain distance, the hall door lock static roller will touch the guide groove swing rod. When the hall door continues to move, the hall door lock static roller pushes the guide groove swing rod and drives the elevator car door. Open a very small end distance, after the elevator car door moves for a certain distance, the car door lock hook interferes with the lock cylinder, and the elevator car door cannot be opened further. Under the action, the swing rod of the guide groove will rotate counterclockwise, driving the first swing arm and the second swing arm to rotate clockwise together, so that the hall door can continue to be opened for a certain distance. In this way, the gap between the hall door can be opened Increased a lot, the stroke difference between the hall door and the elevator car door is greatly increased, there is enough space for manual entry, so as to operate the unlocking device, and finally open the car door. Compared with the general elevator, it shortens the opening time from the hall door. The timing of the elevator car door improves the success rate of opening the elevator car door; when the guide groove swing rod rotates clockwise, the counterweight in the guide groove swing rod and the guide groove have a certain relative movement, when the people outside the hall door After the hand is released, the counterweight will make the swing rod of the guide groove rotate counterclockwise under the action of its own gravity, reset the swing rod of the guide groove to contact with the static roller of the hall door lock, push the hall door to move in the closing direction, and reduce the stroke difference between the hall door and the car door , and the swing rod of the guide groove gives a power to the hall door, which increases the self-closing force of the hall door and improves the probability of closing the hall door lock. In the elevator of the present invention, after opening the hall door lock, by turning the hall door, the hall door lock static roller fixedly connected with the hall door will touch the guide groove swing rod, and finally drive the guide groove swing rod to rotate, and the hall door and the elevator The stroke difference between the car doors 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 a schematic diagram when the hall door and the elevator car door are all closed in the elevator car door lock opening auxiliary device of the present invention;

Fig. 3 is a schematic diagram when the static roller of the hall door lock in the auxiliary device for opening the elevator car door lock of the present invention touches the swing rod of the guide groove;

Fig. 4 is a partial enlarged view of No. I in Fig. 3;

Fig. 5 is a schematic diagram of when the swing rod of the guide groove in the auxiliary device for opening the elevator car door lock of the present invention touches the second limit device;

Fig. 6 is a partial enlarged view of No. I in Fig. 5;

Fig. 7 is a schematic diagram of the installation of the swing bar of the guide groove, the counterweight, the tensioning wheel and the wire fixing device.

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. First swing arm, 203. Second swing Arm, 204. guide groove swing bar, 2041. guide groove, 205. counterweight, 206. counterweight connecting rope, 207. line fixing device, 208. tensioning wheel, 209. pressing wheel, 210. first limit Position device, 211. second limit device, 212. third swing arm, 213. fourth swing arm, 214. drive swing lever, 215. car door lock hook, 216. lock column, 217. pull rope, 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 2-7, in an embodiment of the present invention, an elevator car door lock opening auxiliary device is installed on a door knife base 201, including a first swing arm 202, a second swing arm 203, and a guide groove swing bar 204 , a counterweight 205, a counterweight connector, the counterweight connector is a counterweight connecting rope 206, the two ends of the guide groove swing bar 204 are rotatably connected with the first swing arm 202 and the second swing arm 203 respectively, the first The swing arm 202 and the second swing arm 203 are rotatably connected to the door knife base 201, the first end of the counterweight connecting rope is connected to the counterweight 205, and the second end of the counterweight connecting rope is fixed to the door knife base 201 or the guide groove On the swing rod 204 , a guide groove 2041 is arranged in the guide groove swing rod 204 , and the counterweight 205 is placed in the guide groove 2041 in the guide groove swing rod 204 and cooperates with the guide groove 2041 .

When 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, push the hall door 300 to both sides with a certain amount of force, and the hall door lock static roller 301 moves together with the hall door 300 After the hall door 300 is opened for a certain distance, the hall door lock static roller 301 will touch the guide groove swing rod 204. When the hall door 300 continues to move, the hall door lock static roller 301 pushes the guide groove swing rod 204 and drives the elevator car door 200 opens a very small end distance, after the elevator car door 200 moves a certain distance, the car door lock hook 215 interferes with the lock cylinder 216, and the elevator car door 200 cannot be opened further. Under the action of the hall door lock static roller 301, the guide groove swing rod 204 will rotate clockwise, driving the first swing arm 202 and the second swing arm 203 to rotate clockwise together, 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 greatly increased, and the stroke difference between the hall door 300 and the elevator car door 200 can be increased a lot, so that there is enough space for people to enter, thereby operating the unlocking device, and finally opening the elevator car door 200. , compared with the general elevator, it shortens the time to open the elevator car door 200 from the hall door 300, and improves the success rate of opening the elevator car door 200; when the guide groove swing rod 204 rotates clockwise, the guide groove swing rod The counterweight 205 in 204 and the guide groove 2041 have a certain relative movement. When the personnel outside the hall door 300 let go, the counterweight 205 makes the guide trough swing bar 204 rotate counterclockwise under the action of its own gravity to reset the guide trough swing. The rod 204 is in contact with the static roller 301 of the hall door lock, pushing the hall door 300 to move in the closing direction, reducing the stroke difference between the hall door 200 and the elevator car door 200, and the swing rod 204 of the guide groove gives a power to the hall door 300, increasing the hall door lock. The self-closing force of 300 increases the probability of closing the hall door with 300 locks.

In this embodiment, the auxiliary device for opening the elevator car door lock also includes a wire fixing device 207 and a tensioning pulley 208. The fixed connection is realized with the door knife base 201 by the wire fixing device 207 , and the counterweight connecting rope 206 is tightened by the tensioning wheel 208 . By adjusting the installation position of the tensioning wheel 208, the tension of the counterweight connecting rope 206 can be adjusted, which is convenient for use. The auxiliary device for opening the elevator car door lock also includes a pressing wheel 209, which is fixed on the door knife base 201 and located at the tangent position between the tensioning wheel 208 and the counterweight connecting rope 206. Under the action of the pressing wheel 209, when the guide groove swing bar 204 is lifted, the counterweight 205 will not swing out of the range of the guide groove swing bar 204 section when it is lifted, and the counterweight connecting rope 206 will not escape from the tension. Tensioner 208. In other embodiments, it is also possible that the upper end of the guide groove 2041 in the guide groove swing bar 204 is provided with a connecting part, the second end of the mating connector is fixed on the connecting part of the guide groove swing rod 204, and the counterweight connector For rope or spring. By directly fixing the counterweight 205 to the upper end of the guide groove swing rod 204, the counterweight 205 and the guide groove swing rod 204 form an integral body, which is convenient for installation.

The tensioning wheel 208 wheel surface is provided with clamping groove. The clamping groove on the wheel surface of the tensioning wheel 208 is used to block the counterweight connecting rope 206 placed in the clamping groove to prevent the counterweight connecting rope 206 from detaching from the tensioning wheel 208 . The tension wheel 208 is rotatably installed on the door knife base 201 . The tensioning wheel 208 is detachably installed on the door knife base 208 . The tension wheel 208 is detachable to facilitate adjustment of the installation position of the tension wheel 208, thereby adjusting the tension of the counterweight connecting rope 206.

The elevator car door lock opening auxiliary device also includes a first limiting device 210 and a second limiting device 211 respectively fixed on the door knife base 201, and the first limiting device 210 and the second limiting device 211 are respectively positioned On both sides of the bar 204, when the guide slot swing bar 204 is in a natural state, the guide slot swing bar 204 touches the first limiter 210, and when the guide slot swing bar 204 is lifted to the highest point, the guide slot swing bar 204 touches the second stopper 210. Limiting device 211. When there is no interaction force between the guide groove fork 204 and the hall door lock static roller 301, the guide groove fork 204 is in a natural state; When being lifted to the highest point position, the guide slot swing bar 204 will touch the second limiter 211, and the first limiter 210 and the second limiter 211 act together to make the guide slot swing bar 204 in this area. The inner movement makes the whole process controllable and makes the equipment safer.

A buffer pad is provided on a side of the first limiting device 210 close to the swing bar 204 of the guide groove. Through the design of the buffer pad, too much collision between the guide slot swing bar 204 and the first limiting device 210 is prevented, and the first limiting device 210 and the guide slot swing bar 204 are protected. A buffer pad is provided on a side of the second limiting device 211 close to the swing bar 204 of the guide groove. Through the design of the buffer pad, too much collision between the guide slot swing bar 204 and the second limiting device 211 is prevented, and the second limiting device 211 and the guide slot swing bar 204 are protected. The buffer pad is a silicone pad or a rubber pad.

The first swing arm 202 and the second swing arm 203 are the same swing arm, and the first swing arm 202 is parallel to the second swing arm 203 . When the first swing arm 202 and the second swing arm 203 are parallel, the swing direction of the two swing arms is the same, so that the mutual interference between the two arms will not occur.

The auxiliary device for opening the elevator car door lock also includes a third swing arm 212, a fourth swing arm 213 and a driving swing link 214. Both ends of the swing rod 214 are rotatably connected to the third swing arm 212 and the fourth swing arm 213 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 pendulum 214 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, the force of interaction between the drive swing rod 214 and the hall door lock roller 302 will be generated. Under the action of this force, the drive swing rod 214 will touch the car door lock hook 215, thereby causing the car door lock hook 215 to lift. Lifting, the car door lock hook 215 is disengaged from the lock cylinder 216, the car door lock is opened, and under the promotion of the driving swing rod 214, the hall door 300 is opened following the elevator car door 200. This structure is easy to use.

The present invention also provides an elevator, including a door knife bottom plate 201, a hall door 300, a hall door lock static roller 301, a lock cylinder 216, a car door lock hook 215, an unlocking device, the above-mentioned elevator car door lock opening auxiliary device, and the unlocking device It is a pull rope 217, and the car door lock hook 215 is rotatably installed on the door knife base plate 201. The car door lock hook 215 matches the lock cylinder 216, and one end of the pull rope 217 is connected with the end of the car door lock hook 215 away from the lock cylinder 216. The other end of the stay rope 217 is placed above the door gap 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 at one side of the guide groove swing rod 204 close to the pull rope 217. side.

After opening the hall door lock, by turning the hall door 300, the hall door lock static roller 301 wheel fixedly connected with the hall door 300 will touch the guide groove swing rod 204, and finally drive the guide groove swing rod 204 to rotate, the hall door 300 and The stroke difference between the elevator car doors 200 becomes larger, thereby there is enough space to make the staff stretch into the door slit 303 opened by the hall door 300, so as to facilitate pulling the stay rope 217 to realize the opening of the car door lock. In other embodiments, the unlocking device can also be a pull rod. By pulling the end of the pull rope or pull rod, the car door lock hook 215 can be rotated through the principle of leverage, so that the car door lock hook 215 is separated from the lock cylinder 216, and the car door lock is opened.

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 (10)

1. an elevator cage door lock opening auxiliary device, be installed on a cutter base, it is characterized in that, comprise the first swing arm, the second swing arm, guide groove fork, counterweight, counterweight attaching parts, guide groove fork two ends are rotatably connected with the first swing arm, the second swing arm respectively, first swing arm, the second swing arm are rotationally connected with on a cutter base, counterweight attaching parts first end is connected on counterweight, second end is fixed on a cutter base or guide groove fork, be provided with guide groove in guide groove fork, counterweight is placed in the guide groove in guide groove fork and matches with guide groove.

2. elevator cage door lock opening auxiliary device according to claim 1, it is characterized in that, also comprise wire fixing device, tension wheel, wire fixing device and tension wheel are all installed on a cutter base, described counterweight attaching parts is counterweight connection cord, counterweight connection cord second end is achieved a fixed connection by wire fixing device and door cutter base, and counterweight connection cord is tightened by tension wheel.

3. elevator cage door lock opening auxiliary device according to claim 2, is characterized in that, also comprise contact roller, and contact roller is fixed on a cutter base, and is positioned at described tension wheel and counterweight connection cord tangency location place.

4. elevator cage door lock opening auxiliary device according to claim 2, is characterized in that, described tension wheel wheel face is provided with cable clamping interface.

5. the elevator cage door lock opening auxiliary device according to any one of claim 1-4, it is characterized in that, also comprise the first inhibiting device, the second inhibiting device that are individually fixed on a cutter base, first inhibiting device, the second inhibiting device lay respectively at guide groove fork both sides, guide groove fork in the raw time, guide groove fork touches the first inhibiting device, and when guide groove fork is raised to vertex, guide groove fork touches the second inhibiting device.

6. elevator cage door lock opening auxiliary device according to claim 1, is characterized in that, the guide groove upper end in described guide groove fork is provided with connecting portion, and counterweight attaching parts second end is fixed on the connecting portion of guide groove fork, and counterweight attaching parts is rope or spring.

7. the elevator cage door lock opening auxiliary device according to claim 1,2,3,4 or 6, is characterized in that, described first swing arm, the second swing arm are identical swing arm, and the first swing arm parallels with the second swing arm.

8. the elevator cage door lock opening auxiliary device according to claim 1,2,3,4 or 6, it is characterized in that, also comprise the 3rd swing arm, the 4th swing arm and drive fork, 3rd swing arm, the 4th swing arm is all rotating is connected on a cutter base, drives fork two ends to be rotationally connected with respectively in the 3rd swing arm, the 4th swing arm.

9. an elevator, it is characterized in that, comprise a cutter base plate, Room door, the quiet roller of Room door lock, lock, car gate lock hook, tripper, elevator cage door lock opening auxiliary device as described in any one of claim 1-6, car gate lock hook is rotating to be installed on a cutter base plate, car gate lock hook matches with lock, tripper one end is connected with car gate lock hook one end away from lock, the other end is placed in above the crack between a door and its frame of Room door, Room door is fixedly connected with the quiet roller of Room door lock, and door lock quiet roller in the Room is positioned at described guide groove fork near the side of tripper.

10. elevator according to claim 9, is characterized in that, described tripper is stay cord or pull bar.