Elevator car door system

Abstract

The utility model relates to an elevator car door system, and belongs to the technical field of car elevators. An elevator car door system comprises a door knife assembly. The door knife assembly comprises a door knife base plate used for being connected with the base plate, a left knife plate, a right knife plate and a door knife control plate, wherein the left knife plate and the right knife plate are vertically arranged, the two ends of the door knife control plate are hinged to the left knife plate and the right knife plate respectively, the middle of the door knife control plate is pivoted to the door knife base plate, and the door knife control plate is further provided with a control end. The door knife control assembly comprises a door knife linear motor, a connecting piece and a connecting rod; a stator of the door knife linear motor is fixed on the left hanging plate; the connecting piece is fixedly connected with a rotor of the door knife linear motor; and two ends of the connecting rod are respectively hinged with the connecting piece and the control end. According to the utility model, a rotary motor is replaced by a linear motor, and the transmission and connection relationship of the linear motor is redesigned; therefore, the utility model has the advantages of smooth and stable driving and sliding.

Description

Technical Field

[0001] The utility model relates to an elevator car door system, belonging to the technical field of car elevators. Background Art

[0002] The doors of an elevator include a car door and a landing door. The car door is the door of the car and moves up and down with the user; while the landing door is the door of the doorway on each floor, and its height position is fixed. For safety reasons, the landing door is normally closed and only opens when the elevator car arrives at the corresponding floor.

[0003] To ensure the normally closed property of the landing door, it is usually set that the car door drives the landing door to open. The mechanism for the car door to drive the landing door is usually called a door knife. The door knife usually includes two strip-shaped door knife bodies arranged vertically and parallel to each other on the left and right. When the car descends or ascends to the stopping position of a certain floor, the two door knife bodies on the left and right just fall on both sides of the unlocking wheel and the shaft wheel of the locking hook device of the landing door. The unlocking wheel and the shaft wheel of the landing door are not arranged on the same vertical straight line. Therefore, when the two door knife bodies on the left and right approach each other, the unlocking wheel can be driven to rotate based on the shaft wheel, thereby driving the rotation of the locking hook plate, and then the mechanical lock of the locking hook device of the landing door is opened, so that the landing door can be opened under the action of an external force. At the same time, the door knife is arranged on the car door of the car. When the car door slowly opens, the landing door can be further opened through the force transmission action of the door knife on the unlocking wheel. For example, in the invention patent with the authorization announcement number CN 113086796 B, an elevator landing door lock roller and door knife distance monitoring system discloses the following technical content: The car door knife contacts the landing door lock roller of the landing door. The car door motor acts to drive the door knife, and the door knife drives the landing door lock roller of the landing door to move upward, and then the locking hook is lifted, so as to realize the unlocking of the landing door.

[0004] Traditional elevator car door devices are all driven by a rotating motor, which is converted into a linear motion of a belt through a transmission mechanism, and one side of the belt is connected to the door knife mechanism. Its transmission mechanism is complex, the transmission efficiency is low, and the accuracy is poor. Moreover, the crank movement on the door knife mechanism is actually a rotational movement around a fixed fulcrum, not a linear movement. When the traditional car door device drives the door knife mechanism through a belt, the tension of the belt will change at all times, accelerating the aging of the belt and requiring frequent replacement and maintenance. Content of the Utility Model

[0005] The utility model aims to solve the above problems, and thus provides an elevator car door system. The utility model adopts a main linear motor to drive the car door to open and close, and adopts a door knife linear motor to control the door knife mechanism, effectively solving the above problems.

[0006] The technical solution for the utility model to solve the above problems is as follows:

[0007] An elevator car door system includes a substrate provided with a horizontal sliding track, a left hanging plate and a right hanging plate mounted on the substrate through the horizontal sliding track, a left linear motor for driving the left hanging plate to move horizontally, and a right linear motor for driving the right hanging plate to move horizontally; it further includes a door knife assembly disposed on the left hanging plate; the door knife assembly includes a door knife substrate for connecting to the substrate, a left knife plate and a right knife plate vertically arranged, and a door knife control plate with both ends respectively hinged to the left knife plate and the right knife plate and its middle part pivotally connected to the door knife substrate and further having a control end; it also includes a door knife control component, and the door knife control component includes a door knife linear motor with a stator fixed to the left hanging plate, a connecting piece fixedly connected to the mover of the door knife linear motor, and a connecting rod with both ends respectively hinged to the connecting piece and the control end.

[0008] In the above technical solution of the present utility model, by replacing the rotary motor with a linear motor and redesigning its transmission and connection relationships, the present utility model has the advantages of smooth and stable driving and sliding.

[0009] As a preference of the above technical solution, the elevator car door system further includes a hanging plate synchronization component, and the hanging plate synchronization component includes a first guide wheel and a second guide wheel respectively disposed at both ends of the substrate, and a steel wire rope wound around the first guide wheel and the second guide wheel; the steel wire rope includes an upper section and a lower section integrally connected, the left hanging plate is fixed to the upper section, and the right hanging plate is fixed to the lower section.

[0010] As a preference of the above technical solution, the right hanging plate is fixed to the lower section through a fixed joint and a wire rope tensioner; the fixed joint is disposed at the left end of the right hanging plate, and the wire rope tensioner is disposed at the right end of the right hanging plate.

[0011] As a preference of the above technical solution, the horizontal sliding track includes an upwardly disposed arc-shaped convex track and a downwardly disposed flat track; the arc-shaped convex track and the flat track are integrally connected; upper hanging wheels cooperating with the arc-shaped convex track and lower hanging wheels cooperating with the flat track are disposed on both the left hanging plate and the right hanging plate.

[0012] As a preference of the above technical solution, the door knife control component further includes a slide rail with a guide rail part parallel to the stator of the door knife linear motor and a slider part fixedly connected to the connecting piece.

[0013] As a preference of the above technical solution, limit blocks are disposed at both ends of the slide rail; when the stator of the door knife linear motor slides to the rightmost position, the door knife assembly is opened, and when the stator of the door knife linear motor slides to the leftmost position, the door knife assembly is closed.

[0014] As an optimization of the above technical solution, it further includes a travel switch, which includes a switch body and a conducting contact. The switch body is arranged on the substrate, and the conducting contact is arranged on the left hanging plate. When the left hanging plate slides to the leftmost position, the conducting contact conducts with the switch body, so that the control circuit of the door knife control assembly receives a signal.

[0015] As an optimization of the above technical solution, the control end forms an angle of 30° - 45° with the body part of the door knife control board.

[0016] As an optimization of the above technical solution, the door knife assembly further includes an upper connecting rod and a lower connecting rod, and both the upper connecting rod and the lower connecting rod are hinged to the left knife plate and the right knife plate.

[0017] In summary, the utility model has the following beneficial effects:

[0018] 1. By replacing the rotary motor with a linear motor and redesigning its transmission and connection relationships, the utility model has the advantages of smooth and stable driving and sliding.

[0019] 2. The utility model uses a door knife control assembly based on a door knife linear motor to control the door knife mechanism, which has the advantages of timely response, quickness and sensitivity.

[0020] 3. The utility model uses two linear motors to drive the left and right hanging plates respectively and connects them with a hanging plate synchronization component, so that the left and right hanging plates have the advantages of strong driving force and high synchronization. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the utility model;

[0022] Figure 2 is Figure 1 a partial enlarged view of

[0023] Figure 3 is a schematic diagram of the principle of the door knife control landing door unlocking mechanism;

[0024] In the figure, 1 - substrate, 4 - door knife assembly, 5 - door knife control assembly;

[0025] 11 - Horizontal sliding track, 21 - Left hanging plate, 22 - Right hanging plate, 31 - Left linear motor, 32 - Right linear motor, 41 - Knife base plate of door, 42 - Left knife plate, 43 - Right knife plate, 44 - Control board of door knife, 45 - Upper connecting rod, 46 - Lower connecting rod, 51 - Linear motor of door knife, 52 - Connecting piece, 53 - Slide rail, 54 - Limit block, 55 - Connecting rod, 61 - First guide wheel, 62 - Second guide wheel, 63 - Steel wire rope, 71 - Switch body, 72 - Conductive contact point;

[0026] 111 - Arc-shaped convex track, 112 - Flat track, 221 - Fixed joint, 222 - Steel wire rope tensioner, 441 - Control end, 631 - Upper section, 632 - Lower section. Specific implementation mode

[0027] The following further explains and illustrates the present utility model in conjunction with the accompanying drawings.

[0028] This specific implementation mode is only an interpretation of the present utility model and not a limitation thereof. Any changes made by those skilled in the art after reading the specification of the present utility model will be protected by the patent law as long as they are within the scope of the claims.

[0029] As Figure 1 shown, an elevator car door system includes a base plate 1, a left hanging plate 21 and a right hanging plate 22 arranged based on the base plate, a left linear motor 31 for driving the left hanging plate 21 to move horizontally and a right linear motor 32 for driving the right hanging plate 22 to move horizontally, and various components arranged based on the left hanging plate 21 and the right hanging plate 22.

[0030] A horizontal sliding track 11 is arranged on the base plate 1. The horizontal sliding track 11 includes an arc-shaped convex track 111 arranged upward and a flat track 112 arranged downward. The arc-shaped convex track 111 and the flat track 112 are integrally connected; upper hanging wheels 23 cooperatively arranged with the arc-shaped convex track 111 and lower hanging wheels 24 cooperatively arranged with the flat track 112 are arranged on both the left hanging plate 21 and the right hanging plate 22.

[0031] Various components arranged based on the left hanging plate 21 and the right hanging plate 22 include a hanging plate synchronization component, a door knife component, a door knife control component and a signal-related component.

[0032] The hanging plate synchronization component is used to keep the left hanging plate 21 and the right hanging plate 22 synchronized. As Figure 1As shown in the figure, it includes a first guide wheel 61 and a second guide wheel 62 respectively arranged at both ends of the substrate 1, and a steel wire rope 63 wound around the first guide wheel 61 and the second guide wheel 62; the steel wire rope 63 includes an upper section 631 and a lower section 632 integrally connected, the left hanging plate 21 is fixed to the upper section 631, and the right hanging plate 22 is fixed to the lower section 632 through a fixed joint 221 and a wire rope tensioner 222; the fixed joint 221 is arranged at the left end of the right hanging plate 22, and the wire rope tensioner 222 is arranged at the right end of the right hanging plate 22.

[0033] The door knife assembly 4 is used to control the opening and closing state of the locking hook device of the landing door, such as Figure 1 shown, and is arranged on the left hanging plate 21. As Figure 2 shown, the door knife assembly 4 includes a door knife substrate 41 for connecting the substrate 1, a left knife plate 42 and a right knife plate 43 arranged vertically, a door knife control plate 44 whose two ends are respectively hinged to the left knife plate 42 and the right knife plate 43 and whose middle part is pivotally connected to the door knife substrate 41 and also has a control end 441, an upper connecting rod 45 and a lower connecting rod 46. Both the upper connecting rod 45 and the lower connecting rod 46 are hinged to the left knife plate 42 and the right knife plate 43. In this embodiment, the control end 441 forms an angle of about 45° with the body part of the door knife control plate 44.

[0034] The door knife control assembly 5 is used to control the opening and closing state of the door knife assembly 4. As Figure 2 shown, the door knife control assembly 5 includes a door knife linear motor 51 whose stator is fixed to the left hanging plate, a connecting piece 52 fixedly connected to the mover of the door knife linear motor, a slide rail 53 whose guide rail part is arranged in parallel with the stator of the door knife linear motor 51 and whose slider part is fixedly connected to the connecting piece 52, limit blocks 54 arranged at both ends of the slide rail 53, and a connecting rod 55 whose two ends are respectively hinged to the connecting piece 52 and the control end 441. When the stator of the door knife linear motor 51 slides to the rightmost position, the door knife assembly opens, and when the stator of the door knife linear motor 51 slides to the leftmost position, the door knife assembly closes.

[0035] The signal-related assembly includes a travel switch, and the travel switch includes a switch body 71 and a conducting contact 72. The switch body 71 is arranged on the substrate 1, and the conducting contact 72 is arranged on the left hanging plate 21.

[0036] In the above technical solution of the present invention, the principle that the door knife control assembly 5 controls the door knife assembly 4 and further controls the landing door lock hook assembly is as follows:

[0037] 1. Driven by the left linear motor 31, the left hanging plate 21 starts to move to the right; when it moves to the maximum value, the car door closes;

[0038] 2. The car door closes, and the car executes the ascending or descending program;

[0039] 3. When the car arrives at a new floor, the control circuit of the door knife control component 5 receives a type 1 signal, and the linear motor 51 of the door knife drives the connecting piece 52 to move leftward, driving the connecting rod 55 to move leftward and driving the door knife control board 44 to rotate counterclockwise;

[0040] 4. When the door knife control board 44 starts to rotate counterclockwise, as shown in Figure 3 Figure A, at this time, the distance between the left knife plate 42 and the right knife plate 43 is still far. With the further rotation of the door knife control board 44, the distance between the left knife plate 42 and the right knife plate 43 gradually approaches;

[0041] 5. When the mover of the linear motor 51 of the door knife moves to the leftmost end, at this time, the slider part of the slide rail 53 contacts the left limit block 54, as shown in Figure 3 Figure B. At this time, the distance between the left knife plate 42 and the right knife plate 43 is the closest, lifting the lock hook of the landing door lock hook assembly, thus unlocking the landing door;

[0042] 6. The left hanging plate 21 starts to move leftward under the drive of the left linear motor 31, opening the landing door while opening the car door;

[0043] 7. When the left hanging plate 21 moves to the leftmost side, the conducting contact 72 contacts the switch body 71, and the control circuit of the door knife control component 5 receives a type 2 signal. The linear motor 51 of the door knife drives in the reverse direction, causing the connecting piece 52 to move rightward, driving the connecting rod 55 to move rightward, and driving the door knife control board 44 to rotate clockwise;

[0044] 8. The door knife control board 44 rotates clockwise, causing the distance between the left knife plate 42 and the right knife plate 43 to gradually increase until it reaches the maximum, the car door is completely closed, and the landing door is also closed. The process of the door knife control board 44 rotating clockwise is also the process of the left hanging plate 21 moving rightward under the drive of the left linear motor 31;

[0045] 9. After the car door is completely closed, the car executes the ascending or descending program.

Claims

1. An elevator car door system, comprising a substrate (1) provided with a lateral sliding track (11), a left hanging plate (21) and a right hanging plate (22) mounted on the substrate (1) through the lateral sliding track (11), a left linear motor (31) for driving the left hanging plate (21) to move laterally, and a right linear motor (32) for driving the right hanging plate (22) to move laterally; characterized in that: It further includes a door knife assembly (4) disposed on the left hanging plate (21); the door knife assembly (4) includes a door knife base plate (41) for connecting to the base plate (1), a vertically arranged left knife plate (42) and a right knife plate (43), and a door knife control plate (44) whose two ends are respectively hinged to the left knife plate (42) and the right knife plate (43), and the middle part of which is pivotally connected to the door knife base plate (41) and also has a control end (441); it further includes a door knife control assembly (5), and the door knife control assembly (5) includes a door knife linear motor (51) whose stator is fixed to the left hanging plate, a connecting piece (52) fixedly connected to the mover of the door knife linear motor, and a connecting rod (55) whose two ends are respectively hinged to the connecting piece (52) and the control end (441).

2. The elevator car door system according to claim 1, wherein: The elevator car door system further includes a hanging plate synchronization assembly, and the hanging plate synchronization assembly includes a first guide wheel (61) and a second guide wheel (62) respectively arranged at two ends of the base plate (1), and a steel wire rope (63) wound around the first guide wheel (61) and the second guide wheel (62); the steel wire rope (63) includes an upper section (631) and a lower section (632) integrally connected, the left hanging plate (21) is fixed to the upper section (631), and the right hanging plate (22) is fixed to the lower section (632).

3. The elevator car door system according to claim 2, characterized in that: The right hanging plate (22) is fixed to the lower section (632) through a fixed joint (221) and a wire rope tensioner (222); the fixed joint (221) is arranged at the left end of the right hanging plate (22), and the wire rope tensioner (222) is arranged at the right end of the right hanging plate (22).

4. An elevator car door system according to claim 1, characterized in that: The horizontal sliding track (11) includes an upwardly arranged arc-shaped raised track (111) and a downwardly arranged flat track (112); the arc-shaped raised track (111) and the flat track (112) are integrally connected; upper hanging wheels (23) cooperating with the arc-shaped raised track (111) and lower hanging wheels (24) cooperating with the flat track (112) are arranged on both the left hanging plate (21) and the right hanging plate (22).

5. An elevator car door system according to claim 1, characterized in that: The door knife control assembly (5) further includes a slide rail (53) whose guide rail part is arranged in parallel with the stator of the door knife linear motor (51) and whose slider part is fixedly connected to the connecting piece (52).

6. The elevator car door system according to claim 5, characterized in that: Limit blocks (54) are arranged at both ends of the slide rail (53); when the stator of the door knife linear motor (51) slides to the rightmost position, the door knife assembly is opened, and when the stator of the door knife linear motor (51) slides to the leftmost position, the door knife assembly is closed.

7. A lift car door system according to claim 1, characterized in that: It further includes a travel switch, and the travel switch includes a switch body (71) and a conducting contact (72), the switch body (71) is arranged on the base plate (1), the conducting contact (72) is arranged on the left hanging plate (21), when the left hanging plate (21) slides to the leftmost position, the conducting contact (72) contacts the switch body (71), so that the control circuit of the door knife control assembly (5) receives a signal.

8. The elevator car door system according to claim 1, wherein: The described control end (441) forms an angle of 30° to 45° with the body part of the door knife control board (44).

9. The elevator car door system according to claim 1, characterized in that: The described door knife assembly (4) further includes an upper connecting rod (45) and a lower connecting rod (46), and both the upper connecting rod (45) and the lower connecting rod (46) are hinged to the left knife plate (42) and the right knife plate (43).

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