Elevator door opening and closing safety linkage device

Abstract

This utility model provides a safety linkage device for opening and closing elevator doors, including a landing door and a horizontal plate. Both sides of the landing door are slidably equipped with tracks. A mounting beam is fixedly installed between the inner bottom ends and the inner middle ends of the two tracks. A U-shaped frame is fixedly installed on the inner upper end of the landing door. A stopping mechanism matching the U-shaped frame is installed at the bottom of the mounting beam. The stopping mechanism has a support plate fixedly installed at the bottom of the mounting beam. A stopping block corresponding to the U-shaped frame is elastically supported on the side of the support plate near the landing door. Two lifting holes are symmetrically arranged at the upper end of the landing door. The horizontal plate is equipped with a push plate and a driving component that drives the push plate to reciprocate along the direction perpendicular to the landing door. The push plate is equipped with a bolt and a push block. The bolt corresponds to the lifting hole, and the push block corresponds to the stopping block. In this utility model, the landing door can open and close synchronously with the hoisting cage door, and the landing door can automatically lock after closing, preventing the landing door from being opened from the inside of the floor and reducing safety hazards.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, specifically relating to an elevator door opening and closing safety linkage device. Background Technology

[0002] Construction hoists, also known as construction elevators, building construction elevators, outdoor elevators, or construction site lifting cages, are a type of construction machinery widely used in building construction for carrying people and goods. To ensure safety, construction hoists are usually equipped with cage doors at the exit and floor doors at the floor entrances.

[0003] In the prior art, Chinese utility model patent document with authorization announcement number CN223213619U discloses a mechanical linkage door mechanism applied to intelligent elevators. It controls the operation of electric push rods so that the end of the push rod is inserted into the push rod sleeve. When the cage door is running, it can drive the landing door to rise synchronously, achieving the purpose of intelligently opening the landing door. However, the landing door cannot be automatically locked when closed, and construction personnel can open the landing door from the inside of the floor, which poses a safety hazard.

[0004] Therefore, it is necessary to design a lifting platform door opening and closing protection linkage device that can open and close synchronously with the hoist cage door, and automatically lock the door after closing to prevent the door from being opened from the inside of the floor and reduce safety hazards, in order to solve the current technical problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a lifting platform door opening and closing protection linkage device that allows the landing door to open and close synchronously with the hoist cage door, and automatically locks after closing to prevent the landing door from being opened from the inside of the floor, thereby reducing safety hazards.

[0006] The technical solution of this utility model is as follows: a lifting platform door opening and closing safety linkage device, including a landing door and a horizontal plate; both sides of the landing door are slidably provided with slide rails, and a mounting beam is fixedly provided between the inner bottom ends and the inner middle ends of the two slide rails; a U-shaped frame is fixedly provided on the inner upper end of the landing door; a stopping mechanism matching the U-shaped frame is provided at the bottom of the mounting beam; the stopping mechanism has a support plate fixedly provided at the bottom of the mounting beam; a stopping block corresponding to the U-shaped frame is elastically supported on the side of the support plate near the landing door; two lifting holes are symmetrically provided at the upper end of the landing door; a fixing groove is fixedly provided at the bottom of the horizontal plate; the fixing groove is fixedly provided at the top of the lifting cage door; a push plate and a driving component for driving the push plate to reciprocate in a direction perpendicular to the landing door are provided on the horizontal plate; a bolt and a push block are provided on the push plate; the bolt corresponds to the lifting hole; and the push block corresponds to the stopping block.

[0007] Furthermore, a first inclined surface is provided on the bottom end of the U-shaped frame away from the push plate, and a second inclined surface is provided on the upper end of the stop block near the horizontal plate.

[0008] Furthermore, a sliding rod is symmetrically arranged on the side of the push plate opposite to the plug, and a sliding seat corresponding to the sliding rod is fixedly arranged on the top of the horizontal plate, and the sliding rod is slidably arranged inside the sliding seat.

[0009] Furthermore, guide rods are evenly arranged on the side of the stop block near the support plate. The guide rods are slidably connected to the support plate. A limit plate is fixedly provided at the end of the guide rod. A spring is fitted on the outside of the guide rod between the support plate and the stop block.

[0010] Furthermore, the top of the horizontal plate is symmetrically provided with a first adjustment groove, which is an oblong groove opened in a direction perpendicular to the extension of the horizontal plate. The top of the fixing groove is fixedly provided with a first screw corresponding to the first adjustment groove, and a first nut for locking or releasing the fixing groove and the horizontal plate is assembled on the first screw.

[0011] Furthermore, two hanging plates are provided at the top of the door, and the hanging holes are opened at the top of the hanging plates.

[0012] Furthermore, the hanging plate is provided with two second adjustment grooves corresponding to the landing door. The second adjustment grooves are opened on the hanging plate in a horizontal direction. The landing door is vertically fixed with a second screw corresponding to the second adjustment groove. The second screw is equipped with a second nut for locking or releasing the landing door from the hanging plate.

[0013] Furthermore, the driving component is an electric actuator, one end of which is fixedly connected to the push plate, and the other end of which is fixedly provided with a vertical plate, which is fixedly connected to the horizontal plate.

[0014] The beneficial effects of this utility model are:

[0015] (1) In this utility model, the floor door can be opened and closed synchronously with the cage door, and the floor door can be automatically locked after closing, so as to avoid opening the floor door from the inside of the floor and reduce safety hazards.

[0016] (2) The stop block is embedded inside the U-shaped frame and forms a block at the top of the door, so that the door cannot be opened from the inside.

[0017] (3) When the hoist cage moves to the corresponding floor door, the drive component drives the push plate to move, the bolt is inserted into the hoisting hole, and at the same time the push block pushes the stop block to move out of the U-shaped frame, so that the stop block no longer blocks the U-shaped frame. Then, when the hoist cage door moves up to open and down to close, the hoist cage door cooperates with the hoisting hole through the bolt, driving the floor door to move up to open and down to close synchronously.

[0018] (4) After the cage door moves down and closes, the drive component drives the push plate to reset, the bolt is pulled out from the inside of the lifting hole, the push block is reset, and the stop block is reset under the elastic support, restoring the obstruction to the landing door, so that the landing door can no longer be opened from the inside. Attached Figure Description

[0019] Figure 1 This is one of the structural schematic diagrams of the elevator door opening and closing protection linkage device in this utility model.

[0020] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0021] Figure 3 This is the second structural schematic diagram of the elevator door opening and closing safety linkage device in this utility model.

[0022] Figure 4 for Figure 3 A magnified view of a section at point B in the middle.

[0023] Figure 5 This is a structural schematic diagram of the horizontal plate, fixing groove, and docking mechanism in this utility model. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The descriptions of the exemplary embodiments are merely illustrative and are not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete, and to fully express the scope of the present invention to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0025] The terms "first," "second," and similar words used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as "including" or "comprising" mean that the element preceding the word encompasses the element listed after it, and do not exclude the possibility of encompassing other elements as well. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] like Figures 1 to 5 As shown, a lifting platform door opening and closing safety linkage device is disclosed, including a landing door 1 and a horizontal plate 6; both sides of the landing door 1 are slidably provided with slide rails 2, and mounting beams 3 are fixedly provided between the inner sides of the bottom ends and the inner sides of the middle of the two slide rails 2; a U-shaped frame 11 is fixedly provided on the inner side of the upper end of the landing door 1, the U-shaped frame 11 is part of the frame of the landing door 1; a blocking mechanism 4 matching the U-shaped frame 11 is provided at the bottom of the mounting beam 3, the blocking mechanism 4 has a support plate 44 fixedly provided at the bottom of the mounting beam 3, and a blocking block 41 corresponding to the U-shaped frame 11 is elastically supported on the side of the support plate 44 near the landing door 1; two lifting holes 81 are symmetrically provided at the upper end of the landing door 1; a fixing groove 5 is fixedly provided at the bottom of the horizontal plate 6, the fixing groove 5 is fixedly provided at the top of the lifting cage door; a push plate 73 and a driving component for driving the push plate 73 to reciprocate in the direction perpendicular to the landing door 1 are provided on the horizontal plate 6; a bolt 75 and a push block 77 are provided on the push plate 73; the bolt 75 corresponds to the lifting hole 81, and push block 77 corresponds to stop block 41. In this embodiment, stop block 41 is embedded inside the U-shaped frame 11, forming a block at the top of the landing door 1, preventing the landing door 1 from being opened from the inside. When the cage moves to the corresponding landing door 1, the driving component drives push plate 73 to move, and bolt 75 is inserted into the lifting hole 81. At the same time, push block 77 pushes stop block 41 to move it out of the U-shaped frame 11, so that stop block 41 no longer blocks the U-shaped frame 11. Afterwards, when the cage door moves upward to open and downward to close, the cage door cooperates with the lifting hole 81 through bolt 75, driving landing door 1 to move upward to open and downward to close synchronously. After the cage door drives landing door 1 to move downward to close, the driving component drives push plate to reset, bolt 75 is pulled out from the lifting hole 81, push block 77 resets, and stop block 41 resets under elastic support, restoring the block on landing door 1, so that landing door 1 can no longer be opened from the inside.

[0027] In some embodiments, such as Figure 2 As shown, the bottom end of the U-shaped frame 11 has a first inclined surface 12 on the side opposite to the push plate 73, as... Figure 4As shown, a second inclined surface 46 is provided on the side of the upper end of the stop block 41 near the horizontal plate 6; during the downward movement of the floor door 1, the first inclined surface 12 and the second inclined surface 46 cooperate to push the stop block 41 to move and compress the elastic support on one side, so as to avoid the stop block 41 interfering with the movement of the floor door.

[0028] In some embodiments, a sliding rod 74 is symmetrically arranged on the side of the push plate 73 opposite to the plug 75, and a sliding seat 76 corresponding to the sliding rod 74 is fixedly arranged on the top of the horizontal plate 6. The sliding rod 74 is slidably arranged inside the sliding seat 76. The sliding connection between the push plate 73 and the horizontal plate 6 is realized through the cooperation of the sliding rod 74 and the sliding seat 76, ensuring the stability of the movement of the push plate 73.

[0029] In some embodiments, such as Figure 2 As shown, guide rods 42 are evenly arranged on the side of the stop block 41 near the support plate 44. The guide rods 42 are slidably connected to the support plate 44. A limit plate 43 is fixedly provided at the end of the guide rods 42. A spring 45 is fitted on the outside of the guide rods 42 between the support plate 44 and the stop block 41. The spring 45 provides elastic support to the stop block 41. When the push block 77 pushes the stop block 41, the spring 45 is compressed. When the push plate 77 releases the stop block 41, the spring returns to its original position.

[0030] In some embodiments, such as Figure 5 As shown, the top of the horizontal plate 6 is symmetrically provided with a first adjustment groove 61. The first adjustment groove 61 is an oblong groove opened in the direction perpendicular to the horizontal plate 6. The top of the fixing groove 5 is fixedly provided with a first screw 62 corresponding to the first adjustment groove 61. The first screw 62 is equipped with a first nut 63 for locking or releasing the fixing groove 5 and the horizontal plate 6. Releasing the first nut 63 can adjust the position of the horizontal plate 6 in the axial direction of the plug 75, and adjust the final position of the push plate 77 after it is pushed out to be between the door 1 and the mounting beam 3. After the adjustment is completed, the first nut 63 can be tightened.

[0031] In some embodiments, the top of the door 1 is provided with two hanging plates 8, and hanging holes 81 are opened at the top of the hanging plates 8.

[0032] In some embodiments, such as Figure 4 As shown, the hanging plate 8 is provided with two second adjustment grooves 82 corresponding to the landing door. The second adjustment grooves 82 are opened horizontally on the hanging plate 8. The landing door 1 is vertically fixed with a second screw 83 corresponding to the second adjustment groove 82. The second screw 83 is equipped with a second nut 84 for locking or releasing the landing door 1 and the hanging plate 8. Loosening the second nut 84 can move and adjust the position of the hanging plate 8 horizontally so that the hanging hole 81 corresponds to the plug 75. After adjustment, the second nut 84 can be tightened.

[0033] In some embodiments, the driving component is an electric actuator 71. One end of the electric actuator 71 is fixedly connected to the push plate 73, and the other end of the electric actuator 71 is fixedly provided with a vertical plate 72, which is fixedly connected to the horizontal plate 6. The vertical plate 72 provides support for the electric actuator 71, and the electric actuator 71 extends and retracts to push the push plate 73 to move back and forth.

[0034] In the above embodiment, the fixing groove 5 is fixedly sleeved on the upper end of the door frame of the cage door, and then fixedly connected by bolt assembly or welding.

[0035] In the above embodiment, a friction plate corresponding to the stop block 41 is provided on the inner side of the door 1. The friction plate is assembled on the door 1. By utilizing the friction between the friction plate and the stop block 41, direct friction between the stop block 41 and the door 1 is avoided when the door 1 moves upward. The friction plate can be a self-lubricating PE plate, etc.

[0036] The various embodiments of this utility model have now been described in detail. To avoid obscuring the concept of this utility model, some details known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0037] The embodiments described above only illustrate some implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A safety linkage device for opening and closing doors of an elevator, characterized in that: Including floor doors and horizontal panels; Both sides of the landing door are slidably provided with slide rails. A mounting beam is fixedly provided between the inner bottom ends and the inner middle ends of the two slide rails. A U-shaped frame is fixedly provided on the inner upper end of the landing door. A stop mechanism matching the U-shaped frame is provided at the bottom of the mounting beam. The stop mechanism has a support plate fixedly provided at the bottom of the mounting beam. A stop block corresponding to the U-shaped frame is elastically supported on the side of the support plate near the landing door. Two lifting holes are symmetrically provided at the upper end of the landing door. The bottom of the horizontal plate is fixedly provided with a fixing groove, which is fixedly provided at the top of the cage door. The horizontal plate is provided with a push plate and a driving component that drives the push plate to move back and forth in a direction perpendicular to the door. The push plate is provided with a bolt and a push block. The bolt corresponds to the lifting hole, and the push block corresponds to the stop block.

2. The elevator door opening and closing safety linkage device according to claim 1, characterized in that: The bottom end of the U-shaped frame has a first inclined surface on the side opposite to the push plate, and the upper end of the stop block has a second inclined surface on the side near the horizontal plate.

3. The elevator door opening and closing safety linkage device according to claim 1, characterized in that: A sliding rod is symmetrically arranged on the side of the push plate opposite to the plug, and a sliding seat corresponding to the sliding rod is fixedly arranged on the top of the horizontal plate, and the sliding rod is slidably arranged inside the sliding seat.

4. The elevator door opening and closing safety linkage device according to claim 1, characterized in that: Guide rods are evenly arranged on the side of the stop block near the support plate. The guide rods are slidably connected to the support plate. A limit plate is fixedly provided at the end of the guide rod. A spring is fitted on the outside of the guide rod between the support plate and the stop block.

5. The elevator door opening and closing safety linkage device according to claim 1, characterized in that: The top of the horizontal plate is symmetrically provided with a first adjustment groove, which is an oblong groove opened in the direction perpendicular to the horizontal plate. The top of the fixing groove is fixedly provided with a first screw corresponding to the first adjustment groove, and a first nut for locking or releasing the fixing groove and the horizontal plate is assembled on the first screw.

6. The elevator door opening and closing safety linkage device according to claim 1, characterized in that: The top of the door is provided with two hanging plates, and the hanging holes are opened on the top of the hanging plates.

7. The elevator door opening and closing safety linkage device according to claim 6, characterized in that: The hanging plate is provided with two second adjustment grooves corresponding to the landing door. The second adjustment grooves are opened horizontally on the hanging plate. The landing door is vertically fixed with a second screw corresponding to the second adjustment groove. The second screw is equipped with a second nut for locking or releasing the landing door from the hanging plate.

8. The elevator door opening and closing safety linkage device according to claim 1, characterized in that: The driving component is an electric actuator. One end of the electric actuator is fixedly connected to the push plate, and the other end of the electric actuator is fixedly provided with a vertical plate, which is fixedly connected to the horizontal plate.

Images