Construction hoist linkage door system and construction hoist

Abstract

The invention provides a linkage door system of a construction hoist and the construction hoist, relates to the field of construction hoists, and aims to solve the problems that an existing mechanical interlocking structure is complex and large in occupied space, an electromagnet seat and an electromagnet are installed at the top end of a cage door, an armature is installed at the top end of a fence door, and linkage is achieved through attraction and release of the electromagnet and the armature. Compared with a plurality of complex parts of mechanical interlocking, the electromagnetic adsorption structure is simple, the electromagnetic adsorption does not need to reserve a larger part movement space like mechanical interlocking, the gap between the cage door and the fence door is reduced, the horizontal space occupation of a fence area is reduced, the construction hoist is more compact in layout in a limited site, and the space utilization rate is improved.

Description

Technical Field

[0001] The present invention relates to the field of construction elevators, and in particular to a construction elevator linkage door system and a construction elevator. Background Art

[0002] In a construction elevator, the cage is driven by a drive system to run along the track to achieve lifting and lowering movements. A fence is provided at the bottom of the cage to protect the position of the cage when it is at the bottom, and a fence door is provided on the side of the fence corresponding to the cage door. When the cage door is open, the fence door can be unlocked and opened. After the cage door is closed or the cage is raised, the fence door remains locked to prevent people or objects from entering the fence and interfering with the operation of the cage.

[0003] At present, by installing a control component between the cage door and the fence door, the cage door can be moved under the drive of the door drive motor, and the self-locking hook and interlocking hook of the control component can link the cage door and the fence door, so that the cage door and the fence door can be raised and lowered synchronously, realizing the opening and closing of the cage door and the fence door. It uses an interlocking hook and an interlocking crossbar seat to cooperate, so that the cage door and the fence door can still be in a locked state when they are lowered, but it still uses a mechanical linkage method. The interlocking structure of the control component will take up more horizontal space, resulting in a larger gap between the cage door and the fence door, increasing the floor space of the fence area. In addition, the working status identification of the mechanical interlocking structure requires additional detection elements, and the structural complexity of the interlocking position is further increased, requiring high precision in parts processing, and the manufacturing and assembly difficulties are increased accordingly. Summary of the Invention

[0004] The purpose of the present invention is to address the defects of the existing technology and provide a construction elevator linkage door system and a construction elevator. An electromagnet seat and an electromagnet are installed at the top of the cage door, and an armature is installed at the top of the fence door. The linkage is achieved by the attraction and release of the electromagnet and the armature. Compared with the multiple complex parts of mechanical interlocking, the electromagnetic adsorption structure is simple, and the electromagnetic adsorption does not require a large space for parts to move as in mechanical interlocking. The gap between the cage door and the fence door is reduced, reducing the horizontal space occupied by the fence area, making the construction elevator more compact in a limited space, and improving space utilization.

[0005] The first object of the present invention is to provide a construction elevator linkage door system, which adopts the following scheme: include: The cage door is slidably mounted on the cage, an electromagnet seat is mounted on the top of the cage door, and an electromagnet is mounted on the electromagnet seat; the cage door is equipped with a drive motor for driving the cage door to rise and fall relative to the cage; The fence door is slidably installed on the fence. The fence door and the cage door are spaced apart. An armature is installed on the top of the fence door. The electromagnet seat extends above the armature, so that the electromagnet can attract or release the armature to drive the fence door to rise and fall synchronously with the cage door or the cage door to operate independently.

[0006] Furthermore, a pull rod is slidably mounted on the fence gate, a spring is abutted between the pull rod and the fence gate, a stop block is provided at one end of the pull rod, and the other end is connected to the armature.

[0007] Furthermore, a perforated plate is provided on the fence gate, and a stop block is provided after one end of the pull rod passes through the perforated plate. The spring extends upward along the pull rod axis, with one end abutting against the perforated plate and the other end abutting against the armature. When the electromagnet absorbs the armature to lift the pull rod, the stop block abuts against the perforated plate to drive the fence gate to move.

[0008] Furthermore, the electromagnet seat includes an L-shaped bent plate, one side of the bent plate is connected to the cage door, and the other side extends above the armature and is equipped with the electromagnet.

[0009] Furthermore, a rib is installed on the bending plate, one side of the rib is connected to one side of the bending plate, and the other side of the rib is connected to the other side of the bending plate.

[0010] Furthermore, a first proximity switch and a second proximity switch are installed on the cage, and a first protrusion and a second protrusion are installed on the first cage door. When the cage door is in a closed state, the first protrusion triggers the first proximity switch, and when the cage door is in an open state, the second protrusion triggers the second proximity switch.

[0011] Furthermore, the first proximity switch and the second proximity switch are spaced apart in the vertical direction, and the first protrusion and the second protrusion are spaced apart in the vertical direction.

[0012] Furthermore, the sliding direction of the cage door is parallel to the sliding direction of the fence door.

[0013] A second object of the present invention is to provide a construction elevator utilizing the construction elevator linkage door system as in the first object.

[0014] Furthermore, the cage is a box-shaped structure, the cage door is located at one end of the cage, the fence is a round-shaped structure, and the fence door is located on the side of the fence close to the cage door.

[0015] Compared with the prior art, the present invention has the following advantages and positive effects: In order to solve the problem that the current mechanical interlocking structure is complex and occupies a large space, an electromagnet seat and an electromagnet are installed on the top of the cage door, and an armature is installed on the top of the fence door. The linkage is achieved through the attraction and release of the electromagnet and the armature. Compared with the multiple complex parts of the mechanical interlocking, the electromagnetic adsorption structure is simple. Electromagnetic adsorption does not require a large space for parts to move as in mechanical interlocking. The gap between the cage door and the fence door is reduced, and the horizontal space occupied by the fence area is reduced, so that the construction elevator can be arranged more compactly in a limited area, thereby improving space utilization.

[0016] In order to solve the problem of additional detection elements being needed to monitor the working status of the mechanical interlocking structure, an electromagnet is used in conjunction with an armature to achieve linkage. The working status of the electromagnet, such as power-on attraction and power-off release, can be directly obtained by detecting circuit current, voltage and other parameters. No additional complex mechanical detection elements are required, which simplifies the working status identification process, reduces system complexity and cost, and improves the accuracy and reliability of monitoring.

[0017] The pull rod and spring combination on the fence door constitute an adaptive buffer mechanism. When the electromagnet attracts the armature, the spring is in a compressed state, which can absorb the instantaneous impact force during the lifting and lowering of the cage door and avoid damage to parts caused by rigid collision. When the cage door drops rapidly and drives the fence door, the spring can slow down the sudden change in tension through elastic deformation, extending the service life of components such as the pull rod and the armature. The cooperation between the stop block and the orifice plate ensures that the pull rod will not detach when pulling the fence door. When the electromagnet attracts the armature to lift the pull rod, the stop block abuts the orifice plate, forming a stable force transmission path, ensuring that the fence door rises and falls synchronously with the cage door, preventing linkage failure due to the pull rod slipping out, and improving the stability and reliability of the system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 Schematic diagram of the structure of a construction elevator linkage door system in one or more embodiments of the present invention.

[0020] Figure 2 for Figure 1 A partial enlarged view of point A in the middle.

[0021] Among them, 1. cage; 2. cage door; 3. fence door; 4. pull rod; 5. spring; 6. electromagnet; 7. electromagnet seat; 8. drive motor; 9. first proximity switch; 10. first protrusion; 11. second proximity switch; 12. second protrusion; 13. armature. DETAILED DESCRIPTION

[0022] Example 1 In a typical embodiment of the present invention, Figure 1-Figure 2 As shown, a construction elevator linkage door system is provided.

[0023] Existing construction elevator linkage door systems mostly adopt mechanical linkage. When mechanical interlocking adopts self-locking hooks, interlocking hooks and interlocking crossbar seats, it takes up a lot of horizontal space, resulting in a large gap between the cage door 2 and the fence door 3, increasing the area occupied by the fence area, and limiting the site adaptability and space utilization efficiency of the construction elevator. In addition, the mechanical interlocking structure requires the coordination of multiple parts, the connection relationship between the parts is complex, and high processing accuracy is required. The dimensional tolerance needs to be strictly controlled during the manufacturing process; the position of each component needs to be accurately debugged during assembly, which increases the difficulty and cost of manufacturing and assembly. In addition, in order to monitor the working status of the mechanical interlocking structure, additional detection elements need to be added, further increasing the complexity of the structure, which not only increases the cost, but may also reduce the reliability of the system due to component failure. Based on this, the present embodiment provides a construction elevator linkage door system, which realizes the linkage of the cage door 2 and the fence door 3 by coupling the electromagnet 6 and the armature 13, so that when the cage door 2 is in place and opened, it drives the fence door 3 to rise and open or fall and close synchronously, meeting the working requirements during loading and unloading.

[0024] like Figure 1-Figure 2 As shown, the construction elevator linkage door system includes a cage door 2, a fence door 3 and an electromagnet 6. The cage door 2 is slidably installed on the cage 1. The cage door 2 is equipped with a drive motor 8 for driving the cage door 2 to rise and fall relative to the cage 1. It can slide and rise vertically relative to the main body of the cage 1. The fence door 3 is slidably installed on the fence and can slide and rise vertically relative to the main body of the fence. The fence door 3 and the cage door 2 are spaced apart.

[0025] An electromagnet holder 7 and electromagnet 6 are mounted on top of cage door 2, while an armature 13 is mounted on top of fence door 3. Electromagnet holder 7 extends above armature 13, enabling electromagnet 6 to engage or release armature 13. This interaction allows fence door 3 to rise and fall synchronously with cage door 2, or for cage door 2 to operate independently. Compared to mechanical interlocking mechanisms that require multiple, complex parts, electromagnetic attraction employs a simpler structure, requiring only the electromagnetic assembly and armature 13. This reduces the number of parts, connections, and overall structural complexity.

[0026] Unlike mechanical interlocking, electromagnetic attraction eliminates the need for large component clearances. The gap between cage door 2 and fence door 3 can be significantly reduced, reducing the horizontal space occupied by the fence area. This allows for a more compact construction elevator layout within a limited site, improving space utilization. The operating status of electromagnet 6 (energized, engaged, de-energized, released) can be directly determined by monitoring circuit parameters such as current and voltage. This eliminates the need for complex mechanical detection components, simplifying the operating status identification process, reducing system complexity and cost, and improving monitoring accuracy and reliability.

[0027] like Figure 1 As shown, a pull rod 4 is slidably mounted on the fence door 3, and a spring 5 is abutted between the pull rod 4 and the fence door 3. A stop block is provided at one end of the pull rod 4, and the other end is connected to the armature 13. The pull rod 4 and the spring 5 on the fence door 3 are combined to form an adaptive buffer mechanism. When the electromagnet 6 attracts the armature 13, the spring 5 is in a compressed state, which can absorb the instantaneous impact force during the lifting and lowering process of the cage door 2 and avoid damage to parts caused by rigid collision. When the cage door 2 descends, the electromagnet 6 contacts the armature 13 and pushes the pull rod 4 to move to compress the spring 5. The spring 5 can slow down the rigid collision caused by the sudden change in thrust through elastic deformation, thereby extending the service life of the pull rod 4, the armature 13 and other components.

[0028] An orifice plate is provided on the fence gate 3. A stop block is provided after one end of the pull rod 4 passes through the orifice plate. A spring 5 extends upward along the axis of the pull rod 4, with one end abutting the orifice plate and the other end abutting the armature 13. When the electromagnet 6 attracts the armature 13 and lifts the pull rod 4, the stop block abuts the orifice plate, driving the fence gate 3 to move. The coordinated design of the stop block and the orifice plate ensures that the pull rod 4 does not disengage when the fence gate 3 is pulled. When the electromagnet 6 attracts the armature 13 and lifts the pull rod 4, the stop block abuts the orifice plate, forming a stable force transmission path, ensuring that the fence gate 3 rises and falls synchronously with the cage door 2, preventing linkage failure caused by the pull rod 4 slipping out, and improving the stability and reliability of the system operation.

[0029] like Figure 2 As shown, the electromagnet holder 7 comprises an L-shaped bent plate. One side of the bent plate is connected to the cage door 2, while the other side extends above the armature 13 and mounts the electromagnet 6. This L-shaped bent plate extends the mounting position of the electromagnet 6 above the armature 13, ensuring effective adhesion between the electromagnet 6 and the armature 13 while also creating a more compact connection between the electromagnet holder 7 and the cage door 2. Compared to traditional mechanical linkage structures, this reduces lateral space usage, further narrowing the gap between the cage door 2 and the fence gate 3, and optimizing space utilization within the fenced area of the construction elevator.

[0030] Ribs are mounted on the bent plate, one side of the rib connected to the other side of the bent plate. These ribs enhance the overall rigidity of the electromagnet holder 7 through the principle of triangular stability. During the frequent engagement and release of the electromagnet 6, the ribs effectively disperse stress, preventing deformation of the bent plate due to stress that could affect the accuracy of the electromagnet 6 and the armature 13, thus ensuring the long-term stable operation of the linkage door system.

[0031] In this embodiment, the L-shaped bending plate can be used to accurately position the electromagnet 6 above the armature 13, ensuring that the magnetic force generated by the electromagnet 6 can effectively attract the armature 13, thereby realizing the linkage between the cage door 2 and the fence door 3.

[0032] A first proximity switch 9 and a second proximity switch 11 are installed on the cage 1, and a first protrusion 10 and a second protrusion 12 are installed on the first cage door 2. When the cage door 2 is in the closed state, the first protrusion 10 triggers the first proximity switch 9, and when the cage door 2 is in the open state, the second protrusion 12 triggers the second proximity switch 11. The first proximity switch 9 and the second proximity switch 11 on the cage 1, in conjunction with the first protrusion 10 and the second protrusion 12 on the cage door 2, achieve precise monitoring of the closed and open states of the cage door 2. When the cage door 2 is in the closed state, the first protrusion 10 triggers the first proximity switch 9 and feeds back a "door closed" signal to the control system; when it is open, the second protrusion 12 triggers the second proximity switch 11 and feeds back a "door opened" signal. The dual-position monitoring mechanism avoids state misjudgment due to a single sensor failure, thereby improving system safety.

[0033] The proximity switches and protrusions are distributed at intervals along the vertical axis. On the one hand, this fully utilizes the vertical space and avoids occupying the horizontal space, meeting the requirements of the system's compact design. On the other hand, the vertical layout makes the monitoring structure less susceptible to interference from external debris, ensuring the accuracy and stability of the monitoring signal.

[0034] The sliding direction of cage door 2 is parallel to that of fence door 3, aligning the forces acting on both during linkage, thus reducing friction and mechanical losses caused by these misaligned forces. During simultaneous lifting and lowering, parallel sliding reduces lateral stress between tie rod 4 and fence door 3, ensuring smoother linkage and further improving the system's operating efficiency and service life.

[0035] Whether the electromagnet 6 is attracted to the armature 13 can be determined by monitoring characteristic changes in the current and voltage of the electromagnet 6 to achieve non-contact state recognition.

[0036] In the energized attracted state, when the electromagnet 6 is energized, current is generated in the coil, forming a magnetic field to attract the armature 13. At this time, whether there is current in the circuit (or whether the current reaches a preset threshold) can be detected to determine whether the electromagnet 6 is in the attracted state.

[0037] In the power-off release state, when the electromagnet 6 is powered off, the coil current disappears, the magnetic field weakens, and the armature 13 is released under the action of external forces such as the spring 5. At this time, the current in the circuit is zero (or below the threshold), and it can be determined that the electromagnet 6 is in the released state.

[0038] Example 2 In another typical embodiment of the present invention, Figure 1-Figure 2 As shown, a construction elevator is provided, which utilizes the construction elevator linkage door system as in Example 1.

[0039] A construction elevator, the core of which is to use the construction elevator linkage door system as in Example 1, The construction elevator cage 1 utilizes a box-shaped structure, offering excellent stability and load-bearing capacity, providing a safe and reliable transport space for construction personnel and materials. Its enclosed design effectively prevents the accidental fall of personnel or objects during the lifting process, enhancing safety. Furthermore, the box-shaped structure's regular shape facilitates the installation of the cage door 2 and the arrangement of the sliding track, allowing the cage door 2 to run smoothly along the track. This precise interaction with the electromagnet holder 7, proximity switches, and other components in the interlocking door system ensures accurate identification and control of the cage door 2's open and closed states.

[0040] The fence is designed as a circular structure, forming a circular enclosure area around the bottom of the cage 1, which can fully isolate the bottom space of the cage 1 and prevent people or objects from entering the dangerous area when the cage 1 is raised or lowered. The fence door 3 is set on the side close to the cage door 2, corresponding to the position of the cage door 2, so that the two can be opened and closed synchronously through the linkage door system. The integrity of the circular structure and the precise layout of the fence door 3 can maximize the protection function of the linkage door system, ensuring that the fence door 3 is only allowed to open when the cage 1 is docked and the cage door 2 is closed safely, effectively avoiding safety accidents.

[0041] The relative positioning of cage door 2 and fence door 3 allows electromagnet holder 7 to extend above armature 13, ensuring effective adhesion between electromagnet 6 and armature 13. When cage door 2 moves under the drive motor 8, electromagnet 6 engages or releases armature 13, thereby driving fence door 3 to rise and fall synchronously, achieving coordinated control of the two. This precise positional correspondence reduces adhesion failure and linkage problems caused by installation deviations, thereby improving the reliability and stability of the coordinated door system.

[0042] The combination of the box-shaped cage 1 and the circular fence, combined with the control logic of the interlocking door system, creates a dual safety protection mechanism. When cage door 2 is closed, fence door 3 automatically locks, preventing entry to the fenced area. When cage door 2 is opened, fence door 3 simultaneously unlocks, facilitating the entry and exit of personnel and materials. This coordinated operation is ensured by the interlocking door system's electromagnetic attraction and status monitoring mechanisms (such as proximity switches, pull rod 4, and spring 5), ensuring the timely and accurate operation of the protective function and providing a solid guarantee for the safe operation of the construction hoist.

[0043] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A construction elevator linkage door system, characterized in that: include: The cage door is slidably mounted on the cage, an electromagnet seat is mounted on the top of the cage door, and an electromagnet is mounted on the electromagnet seat; the cage door is equipped with a drive motor for driving the cage door to rise and fall relative to the cage; The fence door is slidably installed on the fence. The fence door and the cage door are spaced apart. An armature is installed on the top of the fence door. The electromagnet seat extends above the armature, so that the electromagnet can attract or release the armature to drive the fence door to rise and fall synchronously with the cage door or the cage door to operate independently.

2. The construction elevator linkage door system according to claim 1, characterized in that: A pull rod is slidably mounted on the fence door, a spring is abutted between the pull rod and the fence door, a stop block is provided at one end of the pull rod, and the other end is connected to an armature.

3. The construction elevator linkage door system according to claim 2, characterized in that: The fence gate is provided with a perforated plate, and a stop block is set after one end of the pull rod passes through the perforated plate. The spring is axially upward along the pull rod, with one end abutting against the perforated plate and the other end abutting against the armature. When the electromagnet absorbs the armature to lift the pull rod, the stop block abuts against the perforated plate to drive the fence gate to move.

4. The construction elevator linkage door system according to claim 1, characterized in that: The electromagnet seat includes an L-shaped bent plate, one side of the bent plate is connected to the cage door, and the other side extends to the top of the armature and is equipped with an electromagnet.

5. The construction elevator linkage door system according to claim 4, characterized in that: A rib is installed on the bending plate, one side of the rib is connected to one side of the bending plate, and the other side of the rib is connected to the other side of the bending plate.

6. The construction elevator linkage door system according to claim 1, characterized in that: The cage is equipped with a first proximity switch and a second proximity switch, and the first cage door is equipped with a first protrusion and a second protrusion. When the cage door is in a closed state, the first protrusion triggers the first proximity switch, and when the cage door is in an open state, the second protrusion triggers the second proximity switch.

7. The construction elevator linkage door system according to claim 6, characterized in that: The first proximity switch and the second proximity switch are spaced apart in the vertical direction, and the first protrusion and the second protrusion are spaced apart in the vertical direction.

8. The construction elevator linkage door system according to claim 6 or 7, characterized in that: The sliding direction of the cage door is parallel to the sliding direction of the fence door.

9. A construction hoist, characterized in that: Utilize the construction elevator linkage door system as described in any one of claims 1-8.

10. The construction elevator according to claim 9, characterized in that: The cage is a box-shaped structure, the cage door is located at one end of the cage, the fence is a round-shaped structure, and the fence door is located on a side of the fence close to the cage door.

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