Integrated car door lock knife

Abstract

The present invention discloses an integrated car door lock knife, comprising a door machine bottom plate, a door hanging plate, a door knife base, a connecting rod assembly, and a secondary support arm. The connecting rod assembly is arranged on the door knife base, and the connecting rod assembly comprises a guide roller and a lock hook connecting rod. A cam groove is arranged on the door machine bottom plate, and the guide roller is rotatably arranged in the cam groove. The lock hook connecting rod is rotatably connected to the door knife base. The guide roller moves in the cam groove to drive the lock hook connecting rod to rotate. The lock hook connecting rod can be connected to the secondary support arm by clamping. A switch plate is arranged on the lock hook connecting rod. A door switch contact is arranged on the door machine bottom plate. The switch plate can trigger the door switch contact. The door switch contact is connected to the elevator control system. The connecting rod assembly can abut against the elevator floor door ball. The elevator floor door ball can drive the connecting rod assembly to move, so that the lock hook connecting rod is separated from the secondary support arm. The present invention can realize the switching of the anti-pick door knife and the mechanical door lock knife, and reduces the difficulty of installation and debugging.

Description

Technical Field

[0001] The invention relates to the technical field of transportation equipment and its peripheral supporting facilities, and in particular to an integrated car door lock knife. Background Art

[0002] An elevator is a vertical lift powered by an electric motor and equipped with a box-shaped cabin, used for carrying people or goods in multi-story buildings. It is a fixed lifting device that serves specified floors. It has a car that runs between at least two vertical rigid rails or with an inclination angle of less than 15°. The size and structure of the car are convenient for passengers to enter and exit or load and unload goods.

[0003] With the rapid development of society, elevators have become a common means of vertical transportation in buildings in people's daily lives, so the safety of elevators has become the focus of people's attention. The national standard GB7588-2003 also clearly stipulates that the distance between the inner surface of the elevator shaft and the car sill should not exceed 0.15m, but in fact it often exceeds due to construction reasons. To solve this problem, elevator manufacturers usually solve it in two ways. One is to add a protective plate to the inner surface of the shaft to reduce this distance to within the range of 0.15m, but this method is more expensive with more floors, and it is not an ideal solution. Another method is to install a mechanical lock in the car. According to the provisions of the national standard, this locking device can only be opened in the unlocking area of ​​the floor door, and the locking of the car door must be confirmed by an electrical safety device. In this way, it can prevent the elevator from malfunctioning in the non-floor door unlocking area and passengers pulling out the car door to escape and causing life safety accidents.

[0004] There is a big difference between the existing mechanical door lock knife and the anti-pick door knife. Usually, the anti-pick door knife is a standard configuration of the car. Whether the above distance exceeds the standard can often be accurately measured during the on-site installation process. Once the mechanical door lock knife needs to be replaced, it is difficult to achieve. That is, the material cost is wasted and the installation time of the personnel is wasted.

[0005] Therefore, how to change the current situation in which the installation and debugging of the car door lock mechanism is difficult has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to provide an integrated car door lock knife to solve the problems existing in the above-mentioned prior art, reduce the difficulty of installation and debugging and production cost, and improve the safety factor of the elevator.

[0007] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides an integrated car door lock door knife, including a door machine bottom plate, a door hanging plate, a door knife base, a connecting rod assembly, and a secondary support arm. The two door hanging plates are slidably connected to the door machine bottom plate, and the elevator car door can be installed on the door hanging plates. The door knife base is fixed on one of the door hanging plates. The connecting rod assembly is arranged on the door knife base. The connecting rod assembly includes a guide roller and a lock hook connecting rod. A cam groove is arranged on the door machine bottom plate. The guide roller can reciprocate along the cam groove. The lock hook connecting rod is rotatably connected to the door knife base. The guide roller Movement in the cam groove can drive the lock hook connecting rod to rotate, and the secondary support arm is fixed on the other door hanging plate. The lock hook connecting rod can be connected with the secondary support arm by clamping. A switch plate is provided on the lock hook connecting rod, and a door switch contact matched with the switch plate is provided on the door machine bottom plate. When the lock hook connecting rod is connected with the secondary support arm by clamping, the switch plate can trigger the door switch contact, and the door switch contact is connected to the elevator control system; the connecting rod assembly can abut against the elevator floor door ball, and the elevator floor door ball can drive the connecting rod assembly to move, so that the lock hook connecting rod is separated from the secondary support arm.

[0008] Preferably, the connecting rod assembly also includes a first tie rod, a first connecting rod, a second tie rod and a second connecting rod, the first tie rod is hingedly connected to the first connecting rod, the guide roller is rotatably hingedly connected to the first connecting rod, one end of the second tie rod is hingedly connected to the second connecting rod, the other end of the second tie rod is hingedly connected to the locking hook connecting rod, the locking hook connecting rod is located at the top of the second connecting rod, the first connecting rod and the second connecting rod are respectively hingedly connected to the door knife base, the gap between the first tie rod and the second tie rod can accommodate the entry and exit of the elevator floor door ball, the first tie rod and the second tie rod can abut against the elevator floor door ball, and the locking hook connecting rod is arranged on the side of the second tie rod away from the first tie rod.

[0009] Preferably, the lock hook link has a protruding pointed hook end, and the pointed hook end and the second tie rod are respectively located on both sides of the hinge point of the lock hook link and the door knife base, and the secondary support arm has a lock seat end, and the lock seat end is located at the top of the lock hook link, and the pointed hook end can be clamped with the lock seat end; the lock hook link is connected with a spring assembly, one end of the spring assembly is connected to the lock hook link, and the other end of the spring assembly is connected to the door knife base through a spring bracket, and the connection point of the spring assembly and the lock hook link is located between the hinge point of the lock hook link and the door knife base and the pointed hook end, and when the lock hook link is clamped with the secondary support arm, the spring assembly is in a compressed state.

[0010] Preferably, two stop blocks are provided on the door knife base, and the two stop blocks can limit the extreme positions of the first tie rod and the second tie rod.

[0011] Preferably, the mass of the second tie rod is greater than the mass of the lock hook connecting rod.

[0012] Preferably, when the switch plate abuts against the door switch contact, the lock hook connecting rod is engaged with the auxiliary arm, and a gap is provided between the pointed hook end and the lock seat end.

[0013] Preferably, the locking hook connecting rod is connected to a lifeline, one end of the lifeline is connected to the locking hook connecting rod, pulling the lifeline can drive the locking hook connecting rod to rotate, and the other end of the lifeline is connected to the elevator floor door.

[0014] Preferably, the plane where the lock seat end is located is perpendicular to the plane where the sharp hook end is located.

[0015] Preferably, the cross-sections of the first tie rod and the second tie rod are L-shaped.

[0016] Preferably, a pulley is provided on the door hanging plate, the pulley is rotatably connected to the door hanging plate, a slide groove matching the pulley is provided on the door machine bottom plate, and the pulley is slidably arranged in the slide groove.

[0017] Compared with the prior art, the present invention has achieved the following technical effects: the integrated car door lock knife of the present invention comprises a door machine bottom plate, a door hanging plate, a door knife base, a connecting rod assembly, and a secondary support arm. The two door hanging plates are slidably connected to the door machine bottom plate, the elevator car door can be installed on the door hanging plate, the door knife base is fixed on one of the door hanging plates, the connecting rod assembly is arranged on the door knife base, the connecting rod assembly comprises a guide roller and a lock hook connecting rod, a cam groove is arranged on the door machine bottom plate, the guide roller can reciprocate along the cam groove, and the lock hook connecting rod is rotatably connected to the door knife base. The guide roller moves in the cam groove to drive the lock hook connecting rod to rotate, and the secondary support arm is fixed on another door hanging plate. The lock hook connecting rod can be connected with the secondary support arm by clamping. A switch plate is provided on the lock hook connecting rod, and a door switch contact matched with the switch plate is provided on the bottom plate of the door machine. When the lock hook connecting rod is connected with the secondary support arm by clamping, the switch plate can trigger the door switch contact, and the door switch contact is connected to the elevator control system; the connecting rod assembly can abut against the door ball of the elevator floor door, and the door ball of the elevator floor door can drive the connecting rod assembly to move, so that the lock hook connecting rod is separated from the secondary support arm. The integrated car door lock knife of the present invention, when the elevator is in the normal unlocking area, under the drive of the door machine, the car door moves, the connecting rod assembly can clamp the door ball of the floor door, thereby driving the elevator floor door to move, and when the door knife base moves with the car door, after the elevator floor door is closed, the lock hook connecting rod and the auxiliary arm are clamped, and the switch plate triggers the door switch contact to complete the closing of the car door; when the elevator fails and is in the unlocking area, the personnel in the elevator pry the car door, the connecting rod assembly moves under the action of the elevator floor door ball, the lock hook connecting rod is separated from the auxiliary arm, and the personnel in the elevator can open the car door for self-rescue; if the elevator is in the non-unlocking area, the connecting rod assembly cannot abut against the elevator floor door ball, and the personnel in the elevator cannot open the elevator car door by prying the door, thereby avoiding safety accidents caused by passengers prying the door to escape when the elevator fails and is in the non-unlocking area. The integrated car door lock knife of the present invention is provided with a switch plate and a door switch contact to realize the switching between the anti-prying door knife and the mechanical door lock knife, and the structure is ingenious, which reduces the difficulty of installation and debugging and the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a front view structural schematic diagram of the integrated car door lock knife of the present invention;

[0020] Figure 2 It is a schematic diagram of the top view of the structure of the integrated car door lock knife of the present invention;

[0021] Figure 3It is a schematic structural diagram of the integrated car door lock knife of the present invention when the car door is in a closed state;

[0022] Figure 4 This is a schematic diagram of the integrated car door lock knife of the present invention when the door machine in the leveling area opens the door or the passenger in the car in the leveling area pries the door:

[0023] Figure 5 It is a schematic diagram of the unlocking state of the integrated car door lock knife of the present invention when rescuing outside the landing door;

[0024] Figure 6 It is a schematic diagram of the integrated car door lock knife of the present invention when a passenger in a car in a non-level area pries the door open;

[0025] Among them, 1 is the door knife base, 2 is the first tie rod, 3 is the first connecting rod, 4 is the cam groove, 5 is the stop block, 6 is the limit screw, 7 is the guide roller, 8 is the tie shaft, 9 is the second tie rod, 10 is the auxiliary arm, 11 is the lock hook connecting rod, 12 is the switch plate, 13 is the door switch contact, 14 is the second connecting rod, 15 is the door machine bottom plate, 16 is the door hanging plate, 17 is the static door ball of the elevator floor door ball, 18 is the dynamic door ball of the elevator floor door ball, 19 is the lifeline, 20 is the spring bracket, and 21 is the spring assembly. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide an integrated car door lock knife to solve the problems existing in the above-mentioned prior art, reduce the difficulty of installation and debugging and production cost, and improve the safety factor of the elevator.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Please refer to Figure 1-6 ,in, Figure 1 Schematic diagram of the front view of the integrated car door lock knife of the present invention, Figure 2 Schematic diagram of the top view of the integrated car door lock knife of the present invention, Figure 3 This is a schematic diagram of the structure of the integrated car door lock knife of the present invention when the car door is closed. Figure 4 It is a schematic diagram of the integrated car door lock knife of the present invention when the door machine in the leveling area opens the door or the passenger in the car in the leveling area pries the door open. Figure 5It is a schematic diagram of the unlocking state of the integrated car door lock knife of the present invention when rescuing outside the landing door, Figure 6 It is a schematic diagram of the integrated car door lock knife of the present invention when a passenger pries the door in a car in a non-level area.

[0030] The present invention provides an integrated car door lock knife, including a door machine bottom plate 15, a door hanging plate 16, a door knife base 1, a connecting rod assembly, and a secondary arm 10. The two door hanging plates 16 are slidably connected to the door machine bottom plate 15, and the elevator car door can be installed on the door hanging plates 16. The door knife base 1 is fixed on one of the door hanging plates 16. The connecting rod assembly is arranged on the door knife base 1. The connecting rod assembly includes a guide roller 7 and a lock hook connecting rod 11. A cam groove 4 is arranged on the door machine bottom plate 15. The guide roller 7 can reciprocate along the cam groove 4. The lock hook connecting rod 11 is rotatably connected to the door knife base 1. The guide roller 7 moves in the cam groove 4. It can drive the lock hook link 11 to rotate, the secondary arm 10 is fixed on another door hanging plate 16, the lock hook link 11 can be connected with the secondary arm 10 by clamping, and a switch plate 12 is provided on the lock hook link 11, and a door switch contact 13 adapted to the switch plate 12 is provided on the door machine bottom plate 15. When the lock hook link 11 is connected with the secondary arm 10 by clamping, the switch plate 12 can trigger the door switch contact 13, and the door switch contact 13 is connected to the elevator control system; the connecting rod assembly can abut against the elevator floor door ball, and the elevator floor door ball can drive the connecting rod assembly to move, so that the lock hook link 11 is separated from the secondary arm 10.

[0031] The integrated car door lock knife of the present invention, when the elevator is in the normal unlocking area, under the drive of the door machine, the car door moves, the connecting rod assembly can clamp the floor door ball, thereby driving the elevator floor door to move, and when the door knife base 1 moves with the car door, after the elevator floor door is closed, the lock hook connecting rod 11 and the auxiliary support arm 10 are clamped, and the switch plate 12 triggers the door switch contact 13, thereby generating a locking signal for verifying the car door lock, and completing the closing of the car door; when the elevator fails and is in the unlocking area, the people in the elevator pull the car door, the connecting rod assembly moves under the action of the elevator floor door ball, the lock hook connecting rod 11 is separated from the auxiliary support arm 10, and the people in the elevator can open the car door for self-rescue; if the elevator is in the non-unlocking area, the connecting rod assembly cannot abut against the elevator floor door ball, and the people in the elevator cannot open the elevator car door by pulling the door, thereby avoiding safety accidents caused by passengers pulling the door to escape when the elevator fails and is in the non-unlocking area. The integrated car door lock knife of the present invention is provided with a switch plate 12 and a door switch contact 13 to realize the switching between the anti-door-picking knife and the mechanical door lock knife. The structure is ingenious, and the difficulty of installation and debugging and the production cost are reduced.

[0032] Specifically, the connecting rod assembly also includes a first connecting rod 2, a first connecting rod 3, a second connecting rod 9 and a second connecting rod 14. The first connecting rod 2 is hingedly connected to the first connecting rod 3, the guide roller 7 is rotatably hingedly connected to the first connecting rod 3, one end of the second connecting rod 9 is hingedly connected to the second connecting rod 14, the other end of the second connecting rod 9 is hingedly connected to the locking hook connecting rod 11, the locking hook connecting rod 11 is located at the top of the second connecting rod 14, the first connecting rod 3 and the second connecting rod 14 are respectively hingedly connected to the door knife base 1, the gap between the first connecting rod 2 and the second connecting rod 9 can accommodate the elevator floor door ball to enter and exit, the first connecting rod 2 and the second connecting rod 9 can abut against the elevator floor door ball, and the locking hook connecting rod 11 is arranged on the side of the second connecting rod 9 away from the first connecting rod 2. The first tie rod 2, two first connecting rods 3, the second tie rod 9, the second connecting rod 14 and the lock hook connecting rod 11 constitute a four-bar linkage. During the up and down movement of the elevator, the elevator floor door ball can enter between the first tie rod 2 and the second tie rod 9, and the second tie rod 9 abuts against the elevator floor door ball and can rotate around the elevator floor door ball.When the elevator is in the unlocking area and the elevator door is closed normally, the car door moves, and the first tie rod 2 and the second tie rod 9 cooperate to clamp the elevator floor door ball, thereby driving the elevator floor door to move, and the door knife base 1 moves with the car door, driving the second tie rod 9 to move together. Under the blocking effect of the elevator floor door ball, the second tie rod 9 drives the lock hook connecting rod 11 to move, so that the lock hook connecting rod 11 rotates to avoid interference with the auxiliary support arm 10. After the elevator floor door is closed, the elevator floor door ball no longer moves, and the second tie rod 9 swings to reset, driving the lock hook connecting rod 11 to reset. At this time, the lock hook connecting rod 11 and the auxiliary support arm 10 are The arm 10 is clamped to complete the closing of the car door; when the elevator is in the unlocking area, the elevator door opens normally, the elevator floor door ball is located between the first tie rod 2 and the second tie rod 9, and the car door is opened under the drive of the door machine. The door knife base 1 installed on the door machine bottom plate 15 moves with the car door. Under the drive of the door machine, the car door opens, and the door knife base 1 moves with the car door. The second tie rod 9 rotates under the blocking effect of the elevator floor door ball, driving the lock hook connecting rod 11 to swing, and the lock hook connecting rod 11 is disengaged from the auxiliary support arm 10 to complete the unlocking, so that the car door can continue to move. During the movement, the guide roller located on the first tie rod 2 The wheel 7 swings under the guidance of the cam groove 4, and the first tie rod 2 and the second tie rod 9 cooperate to clamp the elevator floor door ball, driving the floor door to open together; when the elevator fails and is in the unlocking area, when the personnel in the car pry the door, the car door drives the elevator floor door to open, and the second tie rod 9 installed on the door knife base 1 drives the lock hook connecting rod 11 to rotate under the blocking effect of the elevator floor door ball, so that the lock hook connecting rod 11 is separated from the auxiliary support arm 10, and the unlocking is completed. The car door continues to move under the push of the personnel in the car prying the door. During the movement, the first tie rod 2 is guided by the guide roller 7. When the elevator is in the unlocked area, there is no elevator floor door ball between the first tie rod 2 and the second tie rod 9, and the second tie rod 9 will not swing, and it cannot drive the lock hook connecting rod 11 to rotate and disengage from the auxiliary arm 10, so the elevator car door and floor door cannot be opened, which avoids life-threatening accidents caused by passengers opening the car door when the elevator fails and is in the unlocked area, thereby improving the safety factor of the elevator. It should be noted that the guide roller 7 is rotatably connected to the door knife base 1 and the first connecting rod 3 through the tie shaft 8.

[0033] Among them, the lock hook link 11 has a protruding pointed hook end, and the pointed hook end and the second tie rod 9 are respectively located on both sides of the hinge point of the lock hook link 11 and the door knife base 1, and the secondary support arm 10 has a lock seat end, which is located at the top of the lock hook link 11, and the pointed hook end can be clamped with the lock seat end; the lock hook link 11 is connected to a spring assembly 21, one end of the spring assembly 21 is connected to the lock hook link 11, and the other end of the spring assembly 21 is connected to the door knife base 1 through a spring bracket 20, and the connection point of the spring assembly 21 and the lock hook link 11 is located between the hinge point of the lock hook link 11 and the door knife base 1 and the pointed hook end. When the lock hook link 11 is clamped with the secondary support arm 10, the spring assembly 21 is in a compressed state. The lock hook link 11 is located at the bottom of the lock seat end. The lock hook link 11 rotates downward to disengage from the auxiliary arm 10. A spring assembly 21 is arranged at the bottom of the lock hook link 11 to enhance the closing ability of the lock hook link 11, avoid malfunction due to slight vibration caused by elevator movement, and reduce the failure rate of the elevator.

[0034] In order to limit the limit position of the first tie rod 2 and the second tie rod 9, two stop blocks 5 are provided on the door knife base 1. The two stop blocks 5 can limit the limit position of the first tie rod 2 and the second tie rod 9, thereby improving the movement accuracy of the device. In addition, a limit screw 6 is also provided on the door knife base 1. The limit screw 6 is located at one end of the first tie rod 2 away from the second tie rod 9, further limiting the limit position of the connecting rod assembly.

[0035] More specifically, the mass of the second tie rod 9 is greater than that of the lock hook link 11. When the lock hook link 11 is only subjected to gravity, the lock hook link 11 will rotate counterclockwise due to the greater mass of the second tie rod 9 than that of the lock hook link 11, thereby preventing the lock hook link 11 from swinging and disengaging from the auxiliary arm 10, thereby reducing the safety risk caused by failure of the spring assembly 21.

[0036] It should be emphasized that when the switch plate 12 is in contact with the door switch contact 13, the lock hook link 11 is engaged with the auxiliary arm 10, and there is a gap between the pointed hook end and the lock seat end, that is, when the lock hook link 11 is just able to engage with the auxiliary arm 10, there is still a gap between the switch plate 12 and the door switch contact 13. When the lock hook link 11 continues to move a certain distance, the switch plate 12 can trigger the door switch contact 13 to generate a locking signal to verify the car door lock.

[0037] Furthermore, the lock hook connecting rod 11 is connected with a lifeline 19, one end of the lifeline 19 is connected to the lock hook connecting rod 11, and pulling the lifeline 19 can drive the lock hook connecting rod 11 to rotate, and the other end of the lifeline 19 is connected to the elevator floor door. When the elevator is in the unlocking area, but the people in the elevator car are unable to save themselves, the rescuer can use a triangular key to open the floor door lock from outside the floor door, pry open the floor door for a distance, and the floor door pushes the first tie rod 2 through the elevator floor door ball, driving the guide roller 7 to move along the cam groove 4, and the guide roller 7 moves. The first tie rod 2 stops swinging under the obstruction of the stop block 5, and drives the car door to run a short distance. At this time, the floor door has been opened enough. The rescuer can pull the lifeline 19 to drive the lock hook connecting rod 11 to complete the unlocking, realize the opening of the car door and the floor door, and rescue the people in the car. In addition, the lifeline 19 is pulled downward to achieve unlocking, avoiding the problem of the lifeline 19 being stuck during the upward lifting process.

[0038] In this specific embodiment, the plane where the lock base end is located is perpendicular to the plane where the sharp hook end is located, and a portion of the secondary arm 10 is bent to form the lock base end.

[0039] Furthermore, the cross-sections of the first tie rod 2 and the second tie rod 9 are L-shaped, which is convenient for clamping the elevator floor door ball and driving the floor door to move smoothly.

[0040] In addition, a pulley is provided on the door hanging plate 16, and the pulley is rotatably connected to the door hanging plate 16. A slide groove matching the pulley is provided on the door machine bottom plate 15, and the pulley is slidably set in the slide groove. The pulley is provided to reduce the friction coefficient between the door hanging plate 16 and the door machine bottom plate 15 to make the movement smooth. The slide groove can limit the movement path of the door hanging plate 16 and play a guiding role.

[0041] The integrated car door lock knife of the present invention, when the elevator is in the unlocking area and the elevator door is closed normally, the car door moves under the drive of the door machine, the first tie rod 2 and the second tie rod 9 clamp the elevator floor door ball to drive the floor door to move, and the door knife base 1 moves with the car door, driving the second tie rod 9 to move together, and the second tie rod 9, under the blocking effect of the elevator floor door ball, drives the lock hook connecting rod 11 to move and keep it in a downward lifted state. After running to the floor door closing, the moving door ball in the elevator floor door door ball no longer moves (the elevator floor door ball includes a moving door ball and a static door ball, which is well known to those skilled in the art and will not be described in detail), the second tie rod 9 swings to reset, driving the lock hook connecting rod 11 to reset, and the car door lock is locked, completing the closing of the car door.

[0042] When the elevator is in the unlocking area and the elevator opens the door normally: the elevator floor door ball is between the first tie rod 2 and the second tie rod 9, and the car door is opened under the drive of the door machine. The door knife base 1 installed on the door machine bottom plate 15 moves with the car door, and the second tie rod 9 installed on the door knife base 1 swings obliquely upward under the blocking action of the moving door ball 18 of the elevator floor door ball, driving the lock hook connecting rod 11 to lift downward, and the car door lock is unlocked, so that the door machine can drive the car door to continue moving. During the movement, the first tie rod 2 installed on the door knife base 1 swings under the guidance of the cam groove 4, and the first tie rod 2 and the second tie rod 9 jointly clamp the elevator floor door ball, driving the floor door to open together.

[0043] When the elevator fails and is in the unlocking area, when the people in the car pry the door, the second tie rod 9 installed on the door knife base 1 drives the lock hook connecting rod 11 to lift downward under the blocking effect of the moving door ball 18 of the elevator floor door ball during the process of the car door driving the floor door to open, and the car door lock is unlocked. The car door continues to move under the push of the people in the car prying the door. During the movement, the first tie rod 2 installed on the door knife base 1 swings under the guidance of the cam groove 4, and the first tie rod 2 and the second tie rod 9 jointly clamp the floor door ball and drive the floor door to open together. It can be seen from this that when the elevator fails and is in the unlocking area, the people in the car can complete self-rescue by prying the car door with their hands.

[0044] If the elevator is in the unlocking area and the people in the car are unable to save themselves, the rescuers can use a triangular key to open the floor door lock from outside the floor door and pry the floor door open a distance. The floor door can push the first tie rod 2 through the static door ball 17 of the elevator floor door ball, driving the guide roller 7 to move along the cam groove 4. The guide roller 7 moves away from the cam groove 4. Because the first tie rod 2 stops swinging under the obstruction of the stop block 5, it drives the car door to run a short distance. At this time, the lock hook connecting rod 11 has not yet contacted the lock seat end of the auxiliary support arm 10. At this time, the floor door has been opened a sufficient distance. The rescuers can pull the lifeline 19 through this distance to drive the lock hook connecting rod 11 to complete the unlocking of the car door lock, realize the opening of the car door and the floor door, and complete the rescue work of the people in the car.

[0045] If the elevator is in the non-unlocking area, there is no elevator floor door ball between the first tie rod 2 and the second tie rod 9. The second tie rod 9 will not swing due to the lack of the blocking effect of the moving door ball 18 of the elevator floor door ball, and it will not be able to drive the lock hook connecting rod 11 to lift downward. After running for a distance, the lock hook connecting rod 11 is blocked by the lock seat end of the auxiliary arm 10, and the car door lock cannot be unlocked, and the car door and the floor door cannot be opened. It can be seen from this that when the elevator fails and is in the non-unlocking area, the people in the car cannot open the car door in the car, and the passengers are refused to open the car door to escape when the elevator fails and is in the non-unlocking area, which may cause life safety accidents.

[0046] The integrated car door lock knife of the present invention can detect whether the elevator car is in the level area through the connecting rod assembly. There is no need to set up an unlocking device separately, which simplifies the door knife structure. Only the switch plate 12 and the door switch contact 13 need to be installed to achieve the switching between the anti-pickup door knife and the mechanical lock door knife. The door knife structure is ingenious, the production cost is low, and the difficulty of installation and debugging is reduced.

[0047] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An integrated car door lock knife, characterized by: It includes a door machine bottom plate, a door hanging plate, a door knife base, a connecting rod assembly, and a secondary support arm. The two door hanging plates are slidably connected to the door machine bottom plate, and the elevator car door can be installed on the door hanging plates. The door knife base is fixed on one of the door hanging plates. The connecting rod assembly is arranged on the door knife base. The connecting rod assembly includes a guide roller and a lock hook connecting rod. A cam groove is arranged on the door machine bottom plate. The guide roller can reciprocate along the cam groove. The lock hook connecting rod is rotatably connected to the door knife base. The guide roller moves in the cam groove to drive the lock hook The connecting rod rotates, the secondary support arm is fixed on the other door hanging plate, the lock hook connecting rod can be connected with the secondary support arm by clamping, the lock hook connecting rod is provided with a switch plate, and the door machine bottom plate is provided with a door switch contact adapted to the switch plate. When the lock hook connecting rod is connected with the secondary support arm by clamping, the switch plate can trigger the door switch contact, and the door switch contact is connected to the elevator control system; the connecting rod assembly can abut against the elevator floor door ball, and the elevator floor door ball can drive the connecting rod assembly to move, so that the lock hook connecting rod is separated from the secondary support arm; The connecting rod assembly also includes a first tie rod, a first connecting rod, a second tie rod and a second connecting rod, the first tie rod is hingedly connected to the first connecting rod, the guide roller is rotatably hingedly connected to the first connecting rod, one end of the second tie rod is hingedly connected to the second connecting rod, the other end of the second tie rod is hingedly connected to the lock hook connecting rod, the lock hook connecting rod is located at the top of the second connecting rod, the first connecting rod and the second connecting rod are respectively hingedly connected to the door knife base, the gap between the first tie rod and the second tie rod can accommodate the door ball of the elevator floor door to enter and exit, the first tie rod and the second tie rod can abut against the door ball of the elevator floor door, and the lock hook connecting rod is arranged on a side of the second tie rod away from the first tie rod; The lock hook link has a protruding sharp hook end, the sharp hook end and the second tie rod are respectively located on both sides of the hinge point of the lock hook link and the door knife base, the secondary support arm has a lock seat end, the lock seat end is located at the top of the lock hook link, and the sharp hook end can be clamped with the lock seat end; the lock hook link is connected with a spring assembly, one end of the spring assembly is connected to the lock hook link, and the other end of the spring assembly is connected to the door knife base through a spring bracket, the connection point of the spring assembly and the lock hook link is located between the hinge point of the lock hook link and the door knife base and the sharp hook end, and when the lock hook link is clamped with the secondary support arm, the spring assembly is in a compressed state; Two stop blocks are arranged on the door knife base, and the two stop blocks can limit the extreme positions of the first tie rod and the second tie rod.

2. The integrated car door lock knife according to claim 1 is characterized in that: The mass of the second tie rod is greater than the mass of the lock hook connecting rod.

3. The integrated car door lock knife according to claim 2 is characterized in that: When the switch plate abuts against the door switch contact, the lock hook connecting rod is clamped with the auxiliary support arm, and a gap is formed between the pointed hook end and the lock seat end.

4. The integrated car door lock knife according to claim 3 is characterized in that: The lock hook connecting rod is connected with a life rope, one end of the life rope is connected to the lock hook connecting rod, pulling the life rope can drive the lock hook connecting rod to rotate, and the other end of the life rope is connected to the elevator floor door.

5. The integrated car door lock knife according to claim 4 is characterized in that: The plane where the lock seat end is located is perpendicular to the plane where the sharp hook end is located.

6. The integrated car door lock knife according to claim 4, characterized in that: The cross-sections of the first tie rod and the second tie rod are L-shaped.

7. The integrated car door lock knife according to any one of claims 1 to 6, characterized in that: The door hanging plate is provided with a pulley, the pulley is rotatably connected to the door hanging plate, the door machine bottom plate is provided with a slide groove matching the pulley, and the pulley is slidably arranged in the slide groove.

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