Safety locking device for elevator door

Abstract

The utility model provides an elevator door safety locking device which comprises a cross beam box and a containing block, main sliding grooves are symmetrically formed in the lower end of the interior of the cross beam box, a limiting plate is slidably connected to the interior of the cross beam box through the main sliding grooves, the lower surface of the limiting plate is fixedly connected with an elevator car door, and an embedding hole is formed in the upper surface of the limiting plate. The upper end of the interior of the beam box is symmetrically connected with storage blocks, storage grooves are formed in the storage blocks, penetrating openings are formed in the side faces of the storage blocks, push plates are slidably connected into the penetrating openings, the middles of the push plates are in threaded connection with main lead screws through threaded connection holes, the two ends of the main lead screws are symmetrically connected with fixing plates through bearings, and the fixing plates are fixedly connected into the beam box. The upper surface of the fixing plate is fixedly connected with a main motor. Through the cooperation of the storage block, the limiting plate, the main lead screw, the push plate, the movable plate, the electromagnet and the embedded column, the device can automatically lock the elevator door when the elevator has a power failure fault, so that trapped persons are prevented from forcibly opening the door, and the safety of the persons is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator doors, in particular to a safety locking device for elevator doors. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rows of rigid rails that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line; a fixed lifting device that serves specified floors; a vertical elevator has a car that runs between at least two rows of rigid guide rails that are perpendicular or inclined at an 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; when locking the two doors of the elevator, the current existing method generally adopts a motor to drive the gear to rotate, fix the rack to the elevator door, and then the gear and the rack are meshed, so that the motor provides driving force for the two elevator doors, thereby realizing the closing and locking of the two elevator doors.

[0003] After searching, the prior art disclosed (Announcement No.: CN213387362U) an elevator door locking device, which records that "a slide groove is provided inside the door beam, and an elevator door is slidably connected inside the slide groove, and the number of the elevator doors is two, and both sides of the cylinder plate are fixedly connected to a cylinder box, and a cylinder is provided inside the cylinder box, and a push rod is provided at the output end of the cylinder, and one end of the push rod is fixedly connected to the elevator door, and a connecting rod is fixedly connected inside the sliding door seat, and a rotating wheel is rotatably connected to the middle part of the connecting rod, and the elevator door is slidably connected to the rotating wheel."; The device is connected through a door beam, a sliding door seat, and a plurality of sliding doors. The coordination between the slide, elevator door, cylinder box, cylinder, push rod, connecting rod and rotating wheel enables the two elevator doors to be effectively locked when they need to be closed. However, the device uses the cylinder as the power source for corresponding locking processing. When the elevator fails and the power is cut off, the cylinder will be in a closed state, which makes the locking effect of the elevator door significantly weakened. When the people in the elevator are trapped for a long time, the enclosed space inside the elevator will make the trapped people anxious, which may lead to the situation of door prying. The elevator door that is forcibly opened will bring some unnecessary safety risks to the trapped people and will not be conducive to subsequent rescue. Utility Model Content

[0004] In order to overcome the defects of the prior art, an elevator door safety locking device is now provided to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, an elevator door safety locking device is provided, comprising: a cross beam box and a storage block, the lower end of the cross beam box is symmetrically provided with a main sliding groove, the limit plate is slidably connected to the inside of the cross beam box through the main sliding block, and the lower surface of the limit plate is fixedly connected to the elevator car door, the upper surface of the limit plate is provided with a mosaic hole, and the upper end of the cross beam box is symmetrically connected to the storage block, the storage groove is provided inside the storage block, and the mosaic column is slidably connected in the storage groove through a limiting ring, and the upper surface of the mosaic column is fixedly connected to the cross plate, the side of the storage block is provided with a through opening, the through opening is slidably connected to the push plate, the middle part of the push plate is screwed to the main screw rod through the screw hole, and the two ends of the main screw rod are symmetrically connected to the fixed plate through bearings, the fixed plate is fixedly connected to the inside of the cross beam box, and the upper surface of the fixed plate is fixedly connected to the main motor, the main motor is connected to the main screw rod through a coupling, and the moving plate is slidably connected to the inside of the cross beam box through the screwed main screw rod, and the lower surface of the moving plate is fixedly connected to the electromagnet, and the position of the upper surface of the push plate relative to the electromagnet is fixedly connected to the fixing ring.

[0006] Preferably, the beam box is an overall rectangular structure, the cross-section of the beam box is a v-shaped structure, and the two sets of main slide grooves opened in the beam box are both long strip structures. At the same time, the sizes of the main slide grooves and the main sliders are matched, and the sizes of the inside of the beam box and the limit plate are matched.

[0007] Preferably, the limit plate is in a rectangular structure, the cross-section formed by the combination of the limit plate and the main slider is in a cross-shaped structure, and the fitting hole opened on the upper surface of the limit plate is in a cylindrical structure, and the diameter of the fitting hole is larger than the diameter of the fitting column.

[0008] Preferably, the storage block is of a square structure, the storage groove opened in the storage block is of a cylindrical structure, the axial cross-section of the storage groove is of a Chinese-character structure, and the opening at the upper end of the storage groove is connected to the upper surface of the beam box, and the size of the openings at both ends of the storage groove is adapted to the size of the engaging column.

[0009] Preferably, the interlocking column is in a cylindrical structure, and the interlocking column is located in the middle of the receiving groove and is fixedly connected to a limiting ring, the limiting ring is in a circular ring structure, and the axial cross-section formed by the combination of the limiting ring and the interlocking column is in a cross-shaped structure, and the cross-section of the through-hole opened on the side of the receiving groove is in an L-shaped structure, the sizes of the through-hole and the push plate are matched, and a through hole is opened on the surface of the push plate corresponding to the position of the main screw.

[0010] Preferably, the push plate has a rectangular structure, and the fixed ring fixedly connected to the middle part of the upper surface of the push plate by a groove has a circular ring structure, and the fixed ring is located directly below the electromagnet, which has a circular ring structure. At the same time, the movable plate fixedly connected to the electromagnet has a square structure, and the four groups of positioning plates fixedly connected on both sides of the movable plate are all rectangular structures, and the movable plate and the positioning plate are combined together to form an I-shaped structure.

[0011] Preferably, the transverse plate fixedly connected to the upper surface of the engaging column is in a long strip structure, the pull ring fixedly connected to the middle part of the upper surface of the transverse plate is in a U-shaped structure, and the engaging column and the transverse plate are combined together to form a U-shaped structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are: through the cooperation of the main motor, the main screw, the movable plate, the electromagnet, the fixed ring, the push plate and the interlocking column, the device can perform corresponding locking processing on the elevator car door, avoiding the trapped persons from forcibly opening the door due to panic, ensuring the safety of the trapped persons, and when the elevator fails due to a power outage, the electromagnet will be powered off and closed, and then the interlocking column will move down under the action of gravity and embed into the interlocking hole opened by the limit plate to achieve automatic locking, ensuring the locking effect of the elevator car door in the event of a failure, and facilitating subsequent rescue. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial front view locking schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a partial side view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a partial top view schematic diagram of an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the connection structure of the push plate and the movable plate part of the embodiment of the utility model.

[0017] In the figure: 1. elevator car door; 2. limit plate; 3. crossbeam box; 4. main slide; 5. storage block; 6. limit ring; 7. interlocking column; 8. cross plate; 9. main motor; 10. fixed plate; 11. moving plate; 12. electromagnet; 13. push plate; 14. main slide; 15. main screw rod; 16. fixed ring; 17. positioning plate. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides an elevator door safety locking device, including: a cross beam box 3 and a receiving block 5, the lower end of the cross beam box 3 is symmetrically provided with a main slide groove 4, the limit plate 2 is slidably connected to the cross beam box 3 through the main slider 14, and the lower surface of the limit plate 2 is fixedly connected to the elevator car door 1, the upper surface of the limit plate 2 is provided with a fitting hole, and the upper end of the cross beam box 3 is symmetrically connected to the receiving block 5, the receiving block 5 is provided with a receiving groove, and the fitting column 7 is slidably connected in the receiving groove through the limiting ring 6, and the upper surface of the fitting column 7 is fixedly connected to the cross plate 8, and the side of the receiving block 5 A through opening is provided on the surface, in which a push plate 13 is slidably connected. The middle part of the push plate 13 is screwed to a main screw rod 15 through a screw hole, and both ends of the main screw rod 15 are symmetrically connected to a fixed plate 10 through bearings. The fixed plate 10 is fixedly connected to the inside of the beam box 3, and the upper surface of the fixed plate 10 is fixedly connected to the main motor 9, and the main motor 9 is connected to the main screw rod 15 through a coupling. At the same time, the movable plate 11 is slidably connected to the inside of the beam box 3 through the screwed main screw rod 15, and the lower surface of the movable plate 11 is fixedly connected to the electromagnet 12, and the upper surface of the push plate 13 is fixedly connected to a fixing ring 16 relative to the electromagnet 12.

[0019] In this embodiment, when the elevator loses power due to a fault, the electromagnet 12 becomes closed, and then the electromagnet 12 stops adsorbing the fixing ring 16, and then the push plate 13 fixedly connected to the fixing ring 16 releases the restriction on the limiting ring 6, and the interlocking column 7, the cross plate 8 and the limiting ring 6 move downward under the action of gravity, so that the lower end of the interlocking column 7 can be smoothly embedded in the interlocking hole opened on the upper surface of the limiting plate 2, thereby completing the locking of the limiting plate 2 and the elevator car door 1, preventing the trapped personnel from forcibly opening the door due to panic, ensuring the personal safety of the trapped personnel, and facilitating subsequent rescue. When the rescue personnel need to open the elevator car door 1, they can pull the pull ring to The fixedly connected transverse plate 8, interlocking column 7 and limit ring 6 move up synchronously, and then the restriction of the interlocking column 7 on the limit plate 2 can be released, making it convenient for rescue personnel to open the elevator door 1. When the elevator resumes power supply, the electromagnet 12 returns to the energized state, and the switch of the main motor 9 is started. The main motor 9 drives the main screw 15 to rotate through the coupling, and the main screw 15 can push the electromagnet 12 to move through the screwed moving plate 11. The electromagnet 12 can re-absorb the fixed ring 16, and then the reset switch of the main motor 9 is started, so that the moving plate 11 can drive the fixed ring 16, the push plate 13, the limit ring 6 and the interlocking column 7 to reset through the electromagnet 12.

[0020] As a preferred embodiment, the cross beam box 3 is a rectangular structure as a whole, the cross section of the cross beam box 3 is a U-shaped structure, and the two sets of main slide grooves 4 opened in the cross beam box 3 are both long strip structures. At the same time, the sizes of the main slide grooves 4 and the main sliders 14 are matched, and the sizes of the interior of the cross beam box 3 and the limit plate 2 are matched.

[0021] In this embodiment, if Figure 1 and Figure 2The dimension settings inside the crossbeam box 3, the main slide groove 4, the main slider 14 and the limit plate 2 can effectively enhance the stability of the limit plate 2 and the elevator car door 1 during movement, and ensure that after the elevator car door 1 is closed, the engaging hole of the limit plate 2 is located directly below the engaging column 7.

[0022] As a preferred embodiment, the limit plate 2 has a rectangular structure, the cross-section formed by the limit plate 2 and the main slider 14 combined together has a cross-shaped structure, and the mating hole opened on the upper surface of the limit plate 2 has a cylindrical structure, and the diameter of the mating hole is larger than the diameter of the mating column 7.

[0023] In this embodiment, if Figure 1 and Figure 2 The setting of the main slider 14 can effectively prevent the limit block from accidentally detaching from the interior of the beam box 3, and can also help enhance the connection effect between the beam box 3 and the elevator car door 1. At the same time, the size of the opening of the chimeric hole is relatively large, which can reduce the difficulty of embedding the chimeric column 7 and ensure that the beam box 3 can smoothly lock the elevator car door 1.

[0024] As a preferred embodiment, the storage block 5 is of a square structure, the storage groove opened in the storage block 5 is of a cylindrical structure, the axial cross-section of the storage groove is of a Chinese-character structure, and the opening at the upper end of the storage groove is connected to the upper surface of the beam box 3, and the size of the openings at both ends of the storage groove is compatible with the size of the interlocking column 7.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3 The opening at the upper end of the storage groove passes through the upper surface of the beam box 3, which makes it convenient for rescue personnel to pull the embedded column 7 from the outside, release the restriction of the embedded column 7 on the limit plate 2 and the elevator car door 1, and facilitate rescue personnel to open the door quickly. At the same time, the size of the openings at both ends of the storage groove is compatible with the size of the embedded column 7, which can enhance the stability of the embedded column 7 when moving.

[0026] As a preferred embodiment, the interlocking column 7 is in a cylindrical structure. The interlocking column 7 is located in the middle of the receiving groove and is fixedly connected to the limiting ring 6. The limiting ring 6 is in a circular ring structure, and the axial cross-section formed by the limiting ring 6 and the interlocking column 7 is in a cross-shaped structure, and the cross-section of the through-hole opened on the side of the receiving groove is in an L-shaped structure. The size of the through-hole and the push plate 13 are matched, and a through hole is opened on the surface of the push plate 13 corresponding to the position of the main screw 15.

[0027] In this embodiment, if Figure 1 , Figure 2 and Figure 3 The setting of the limit ring 6 can limit the moving range of the embedded column 7, and the push plate 13 can also push the embedded column 7 to move synchronously through the limit ring 6, so that the elevator car door 1 can be actively locked according to actual needs.

[0028] As a preferred embodiment, the push plate 13 has a rectangular structure, and the fixed ring 16 fixedly connected to the middle part of the upper surface of the push plate 13 by a groove has a circular ring structure, and the fixed ring 16 is located directly below the electromagnet 12, and the electromagnet 12 has a circular ring structure. At the same time, the movable plate 11 fixedly connected to the electromagnet 12 has a square structure, and the four groups of positioning plates 17 fixedly connected on both sides of the movable plate 11 are all rectangular structures, and the movable plate 11 and the positioning plates 17 are combined together to form an I-shaped structure.

[0029] In this embodiment, if Figure 3 and Figure 4 The ends of the positioning plates 17 away from the movable plate 11 are all in contact with the inner side of the beam box 3, so the four groups of positioning plates 17 can effectively limit the rotation range of the movable plate 11, ensuring that the movable plate 11 can perform corresponding translation as the main screw rod 15 rotates. At the same time, the fixing ring 16 can be made of stainless steel to enhance the durability of the fixing ring 16.

[0030] As a preferred embodiment, the horizontal plate 8 fixedly connected to the upper surface of the interlocking column 7 is in a long strip structure, the pull ring fixedly connected to the middle of the upper surface of the horizontal plate 8 is in a U-shaped structure, and the interlocking column 7 and the horizontal plate 8 are combined together to form a U-shaped structure.

[0031] In this embodiment, if Figure 1 and Figure 2 The arrangement of the horizontal plate 8 and the pull ring enables the rescue personnel to pull the two sets of interlocking columns 7 to move at the same time, and then the restrictions of the two elevator car doors 1 can be released synchronously, which is convenient for the subsequent door opening process, increases the area of ​​the exit, and increases the speed of the trapped persons to escape.

[0032] The elevator door safety locking device of the utility model cooperates with the storage block 5, the limit plate 2, the main screw 15, the push plate 13, the movable plate 11, the electromagnet 12 and the interlocking column 7, so that the device can automatically lock the elevator door when a power failure occurs in the elevator, thereby preventing the trapped personnel from forcibly opening the door and ensuring the safety of the personnel. In addition, the trapped personnel are in a relatively closed environment, which can effectively reduce the difficulty of subsequent rescue and avoid safety accidents during the rescue process.

Claims

1. An elevator door safety locking device, comprising: Crossbeam box (3) and storage block (5), characterized in that: at the lower end inside the crossbeam box (3), main sliding grooves (4) are symmetrically opened. The limiting plate (2) is slidably connected inside the crossbeam box (3) through main sliders (14), and the elevator car door (1) is fixedly connected to the lower surface of the limiting plate (2). A fitting hole is opened on the upper surface of the limiting plate (2), and storage blocks (5) are symmetrically connected to the upper end inside the crossbeam box (3). A storage groove is opened inside the storage block (5), and the fitting column (7) is slidably connected in the storage groove through a limiting ring (6). At the same time, a cross plate (8) is fixedly connected to the upper surface of the fitting column (7). A through opening is opened on the side surface of the storage block (5), and a push plate (13) is slidably connected in the through opening. The middle part of the push plate (13) is screwed to the main lead screw (15) through a screw hole, and both ends of the main lead screw (15) are symmetrically connected to fixing plates (10) through bearings. The fixing plates (10) are fixedly connected inside the crossbeam box (3), and a main motor (9) is fixedly connected to the upper surface of the fixing plate (10). The main motor (9) is connected to the main lead screw (15) through a coupling. At the same time, the moving plate (11) is slidably connected inside the crossbeam box (3) through the screwed main lead screw (15), and an electromagnet (12) is fixedly connected to the lower surface of the moving plate (11). Fixed rings (16) are fixedly connected to the upper surface of the push plate (13) at positions opposite to the electromagnet (12).

2. An elevator door safety locking device according to claim 1, characterized in that: The crossbeam box (3) is integrally in a rectangular structure, the cross-section of the crossbeam box (3) is in a U-shaped structure, and the two groups of main sliding grooves (4) opened inside the crossbeam box (3) are both in a long strip structure. At the same time, the sizes of the main sliding grooves (4) and the main sliders (14) are adapted to each other, and the sizes of the inside of the crossbeam box (3) and the limiting plate (2) are adapted to each other.

3. An elevator door safety locking device according to claim 1, characterized in that: The limiting plate (2) is in a rectangular structure. The cross-section formed by the combination of the limiting plate (2) and the main slider (14) is in a cross-shaped structure. The fitting hole opened on the upper surface of the limiting plate (2) is in a cylindrical structure, and the diameter of the fitting hole is larger than the diameter of the fitting column (7).

4. An elevator door safety locking device according to claim 1, characterized in that: The storage block (5) is in a square structure. The storage groove opened inside the storage block (5) is in a cylindrical structure, and the axial cross-section of the storage groove is in a middle-shaped structure. The opening at the upper end of the storage groove communicates with the upper surface of the crossbeam box (3), and the sizes of the openings at both ends of the storage groove are adapted to the size of the fitting column (7).

5. The elevator door safety locking device according to claim 1, characterized in that: The fitting column (7) is in a cylindrical structure. A limiting ring (6) is fixedly connected to the position in the middle of the storage groove of the fitting column (7). The limiting ring (6) is in a circular ring structure. The axial cross-section formed by the combination of the limiting ring (6) and the fitting column (7) is in a cross-shaped structure. The cross-section of the through opening opened on the side surface of the storage groove is in an L-shaped structure. The through opening and the push plate (13) are adapted to each other in size, and through holes are correspondingly opened on the surface of the push plate (13) at positions opposite to the main lead screw (15).

6. An elevator door safety locking device according to claim 1, characterized in that: The push plate (13) has a rectangular structure, and the fixing ring (16) fixedly connected to the middle of the upper surface of the push plate (13) through a groove has a circular ring structure, and the fixing ring (16) is located directly below the electromagnet (12), and the electromagnet (12) has a circular ring structure. At the same time, the moving plate (11) fixedly connected to the electromagnet (12) has a square structure, and the four groups of positioning plates (17) fixedly connected to both sides of the moving plate (11) are all rectangular structures, and the moving plate (11) and the positioning plates (17) are combined together to form an I-shaped structure.

7. An elevator door safety locking device according to claim 1, characterized in that: The transverse plate (8) fixedly connected to the upper surface of the embedded column (7) is in the shape of a long strip, the pull ring fixedly connected to the middle part of the upper surface of the transverse plate (8) is in the shape of a U-shaped structure, and the embedded column (7) and the transverse plate (8) are combined together to form a U-shaped structure.

Images