Three-folding type linkage landing door of construction hoist and linkage control method

Abstract

The invention discloses a construction hoist three-folding type linkage landing door and a linkage control method.The construction hoist three-folding type linkage landing door comprises a suspension cage, a suspension cage door is arranged at the front end of the suspension cage, a protective door is arranged between the suspension cage and the suspension cage door, the protective door comprises a door frame, an upper layer door, a middle layer door and a lower layer door, and the door frame is arranged on the suspension cage; the upper layer door, the middle layer door and the lower layer door are connected through connecting assemblies, a power assembly driving the three layer doors to be opened and closed is arranged on the cage door, and a limiting switch is arranged at the bottom of the door frame. The connecting assembly is arranged between the protective door and the suspension cage door, a linkage mechanism of the landing doors and the suspension cage door ensures that the suspension cage can be started or run only under the condition that all the landing doors are completely closed and locked, and the risk of accidental opening is reduced; meanwhile, the limiting switch is arranged at the lower end of the door frame, the state of the landing door is monitored in real time, it is ensured that the cage cannot be started when the landing door is not completely closed, and safety is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction machinery, and in particular to a three-folding linkage layer door of a construction elevator and a linkage control method. Background Art

[0002] With the rapid development of the construction industry, construction elevators, as important vertical transportation equipment, are widely used in the construction and maintenance of high-rise buildings. The safety of construction elevators is directly related to the life safety of workers and the smooth progress of the project; therefore, the design and safety protection measures of floor doors are particularly important.

[0003] At present, most construction elevator floor doors on the market use elevator protective doors. Although this design can provide safety protection to a certain extent, there are still some significant safety hazards. First, there is a lack of effective linkage device between the protective door and the cage, which makes the opening and closing of the protective door completely dependent on manual operation. In a busy construction environment, operators may neglect the correct operation of the protective door due to fatigue or inattention, thereby increasing the risk of accidents.

[0004] Secondly, the protective door can be operated from both the inside and the outside, which means that personnel can open the protective door at will regardless of whether they are on the inside or outside of the floor station. Although this design provides convenience, it also greatly increases safety hazards; especially when the cage is rising or falling, if someone opens the protective door on the inside of the floor station, it may cause the person to fall accidentally or collide with the cage, causing a serious safety accident.

[0005] Therefore, a three-folding linkage floor door of a construction elevator and a linkage control method are proposed to solve the problems existing in the prior art. Summary of the invention

[0006] The purpose of the present invention is to provide a three-folding linkage floor door and linkage control method for a construction elevator in view of the above-mentioned problems. The present invention provides a connection assembly between the protective door and the cage door. The linkage mechanism between the floor door and the cage door ensures that the cage will only start or run when all the floor doors are completely closed and locked, thereby reducing the risk of accidental opening. At the same time, a limit switch is provided at the lower end of the door frame to monitor the state of the floor door in real time, ensuring that the cage cannot be started when the floor door is not completely closed, thereby further improving safety. In order to achieve the above-mentioned invention purpose, the technical solution adopted by the present invention is as follows:

[0007] According to one aspect of the present invention, there is provided a three-folding linkage layer door and linkage control method for a construction elevator, comprising a cage, a cage door is provided at the front end of the cage, and a protective door is provided between the cage and the cage door, the protective door comprises a door frame, an upper door, a middle door and a lower door, the door frame is arranged on the cage, the upper door, the middle door and the lower door are arranged on the door frame in sequence from top to bottom, and are of vertical folding design, the upper door, the middle door and the lower door are connected to each other by a connecting assembly, and a power assembly for driving the three layer doors to open and close is provided on the cage door, and a limit switch is provided at the bottom of the door frame.

[0008] Preferably, the connecting assembly includes two front guide rails and two rear guide rails respectively arranged on the front and rear sides of the door frame, and the upper door, the middle door and the lower door are provided with sliders on the left and right sides, the two sliders of the upper door are both mounted on the corresponding two rear guide rails, the two sliders on the middle door and the lower door are both mounted on the corresponding two front guide rails, and the upper door and the middle door are located in the door frame, while the lower door is located outside the door frame, two upper positioning blocks and two lower positioning blocks are provided between the two front guide rails and the rear guide rails, and the two upper positioning blocks are located in the middle section, and the two lower positioning blocks are located in the lower section.

[0009] Preferably, the power assembly includes two connecting parts symmetrically arranged on the side of the lower door close to the cage door, the connecting part is a frame with a right-angled triangle cross-section, that is, there is a connecting cavity inside, and two hook plates are symmetrically provided on the side of the cage door close to the lower door, and the two hook plates are inclined upward, and the two hook plates are matched with the corresponding connecting parts.

[0010] Preferably, each of the hook plates is connected to the cage door via a one-way spring hinge.

[0011] Preferably, an arc baffle plate is provided on the top of each of the connecting members, and the arc baffle plate is an arc-shaped plate extending downward.

[0012] Preferably, each of the sliding blocks consists of a sliding portion and a connecting portion, each of the sliding portions is sleeved on a corresponding guide rail, and each of the connecting portions is a hollow structure.

[0013] Preferably, the weights of the upper door, the middle door and the lower door increase in sequence.

[0014] A linkage control method for a three-folding linkage landing door of a construction elevator, comprising:

[0015] ①. Through the limit switch at the bottom of the door frame, the status information is fed back to the control system for processing. All floor doors are in a closed and locked state, and the cage can be started or kept running;

[0016] ②. The floor door is opened or locked by the intelligent construction elevator cage door, and is locked by its own weight. There is no manual way to open the floor door inside the cage to prevent personnel from opening the floor door from the inside of the floor station.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. The three-folding linkage floor door and linkage control method of a construction elevator described in the present invention have a connecting component between the protective door and the cage door. The linkage mechanism between the floor door and the cage door ensures that the cage will only start or run when all the floor doors are completely closed and locked, thereby reducing the risk of accidental opening. At the same time, a limit switch is provided at the lower end of the door frame to monitor the status of the floor door in real time to ensure that the cage cannot be started when the floor door is not completely closed, thereby further improving safety.

[0019] 2. The three-folding linkage door and linkage control method of a construction elevator described in the present invention improves the overall stability of the protective door by arranging the weights of the upper door, the middle door and the lower door to increase in sequence, and the heavier lower door can effectively prevent accidental opening when closed, thereby preventing the risk of falling or accidents caused by construction workers accidentally opening the door inside the cage, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 The present invention Figure 1 Rear view of

[0022] Figure 3 The present invention Figure 1 A magnified image of point A;

[0023] Figure 4 The present invention Figure 1 A magnified view of point B;

[0024] Figure 5 It is a state change diagram of the process of the protective door moving upwards according to the present invention;

[0025] In the attached drawings, 1 is cage door; 2 is door frame; 3 is upper door; 4 is middle door; 5 is lower door; 6 is limit switch; 7 is front guide rail; 8 is rear guide rail; 9 is slider; 901 is sliding part; 902 is connecting part; 10 is upper positioning block; 11 is lower positioning block; 12 is connecting piece; 13 is hook plate; 14 is arc baffle plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are only for the purpose of enabling the reader to have a thorough understanding of one or more aspects of the invention, and these aspects of the present invention can be realized even without these specific details.

[0027] See also Figures 1 to 5 The present invention provides a three-folding linkage door and linkage control method for a construction elevator, and the technical solution is as follows:

[0028] It includes a cage, a cage door 1 is provided at the front end of the cage, and a protective door is provided between the cage and the cage door 1, the protective door includes a door frame 2, an upper door 3, a middle door 4 and a lower door 5, the door frame 2 is arranged on the cage, the upper door 3, the middle door 4 and the lower door 5 are arranged on the door frame 2 from top to bottom, and are designed to be vertically foldable, the upper door 3, the middle door 4 and the lower door 5 are connected to each other by a connecting component, and the cage door 1 is provided with a power component for driving the three doors to open and close, a limit switch 6 is provided at the bottom of the door frame 2, and the design of the three-layer door provides better structural stability, can withstand certain external forces, and avoid deformation or damage of the door body due to external impact.

[0029] There is no linkage device between the existing protective door and the cage, which means that the opening and closing of the protective door are completely dependent on manual operation. In a busy construction environment, operators may ignore the correct operation of the protective door due to fatigue or lack of concentration, thereby increasing the risk of accidents. Secondly, the protective door can be operated from both the inside and outside, which means that personnel can open the protective door at will whether they are on the inside or outside of the landing station. Although this design provides convenience, it also greatly increases safety hazards.

[0030] By providing a connecting component between the protective door and the cage door 1, the linkage mechanism between the floor door and the cage door 1 ensures that the cage will only start or run when all floor doors are completely closed and locked, thereby reducing the risk of accidental opening; at the same time, a limit switch 6 is provided at the lower end of the door frame 2 to monitor the status of the floor door in real time to ensure that the cage cannot be started when the floor door is not completely closed, thereby further improving safety; the introduction of the power component makes the opening and closing of the floor door more automated, reduces the need for manual operation, and reduces the labor intensity of the operator.

[0031] The connecting assembly includes two front guide rails 7 and two rear guide rails 8 respectively arranged on the front and rear sides of the door frame 2, and sliders 9 are provided on the left and right sides of the upper door 3, the middle door 4 and the lower door 5. The two sliders 9 of the upper door 3 are both sleeved on the corresponding two rear guide rails 8, and the two sliders 9 on the middle door 4 and the lower door 5 are both sleeved on the corresponding two front guide rails 7, and the upper door 3 and the middle door 4 are located in the door frame 2, and the lower door 5 is located outside the door frame 2, and two upper positioning blocks 10 and two lower positioning blocks 11 are provided between the two front guide rails 7 and the rear guide rails 8, and the two upper positioning blocks 10 are located in the middle section, and the two lower positioning blocks 11 are located in the lower section.

[0032] When the cage just stops in place, the three-fold linkage floor door is in a closed state, and the cage door 1 gradually opens upwards. During the process, through the action of the power component, the cage door 1 drives the lower door 5 to move upwards until the lower door 5 slider 9 contacts the middle door 4 slider 9. At this time, the floor door is disengaged from the limit switch 6, and the control system prohibits the cage from starting and running through the control signal; the cage door 1 continues to open upwards, the cage door 1 and the lower door 5 move upward, and drive the middle door 4 to move upward together through the lower door 5 slider 9 and the middle door 4 slider 9 until the middle door 4 slider 9 contacts the upper door 3 slider 9; then the cage door 1 drives the lower door 5 and the middle door 4 to continue to move upwards and drives the upper door 3 to move upward together through the middle door 4 slider 9 and the upper door 3 slider 9 until the cage door 1 and the floor door are both opened in place, that is, the cage door 1 drives the protective door to open an operation;

[0033] The door closing process is the opposite of the door opening process. The cage door 1 gradually closes downwards, and the layer doors move downwards together under the action of their own weight. The upper door 3 follows and moves to the positions of the two upper positioning blocks 10. Restricted by the upper positioning blocks 10, the upper door 3 no longer moves downwards; the cage door 1 continues to close downwards, the lower door 5 and the middle door 4 continue to move downwards together, and the middle door 4 reaches the positions of the two lower positioning blocks 11. Restricted by the lower positioning blocks 11, the middle door 4 no longer moves downwards; the remaining lower door 5 continues to move downwards with the cage door 1. When the lower door 5 is completely closed, the lower door 5 re-contacts the limit switch 6, and the control system restores the cage start-up and operation functions through the control signal, and the cage door 1 continues to move downwards until it is closed.

[0034] The power assembly includes two connecting members 12 symmetrically arranged on the side of the lower door 5 close to the cage door 1. The connecting member 12 is a frame with a right-angled triangle cross-section, that is, there is a connecting cavity inside. Two hook plates 13 are symmetrically provided on the side of the cage door 1 close to the lower door 5, and the two hook plates 13 are inclined upward, and the two hook plates 13 are matched with the corresponding connecting members 12.

[0035] During the process of the cage door 1 moving upward and opening, the two hook plates 13 will contact the corresponding connecting parts 12, and the hook plates 13 will tilt upward and enter the frame of the corresponding connecting parts 12, so that the cage door 1 drives the lower door 5 to move upward, and cooperates with the slider 9 and the guide rail to drive the middle door 4 and the upper door 3 to continue to move upward until the protective door is fully opened; by setting the hook plates 13 and the connecting parts 12, the linkage between the floor doors and the cage is realized, and the automatic opening and closing of the floor doors is completed through the mechanical linkage between the cage door 1 and the floor doors, thereby improving convenience and safety.

[0036] Each of the hook plates 13 is connected to the cage door 1 by a one-way spring hinge; the one-way spring hinge allows the hook plate 13 to rotate only in the direction of the cage door 1. When the cage door 1 and the protective door need to be separated during maintenance, the corresponding hook plate 13 can be retracted and then the cage door 1 can be raised or lowered to avoid the connection member 12 interfering with the maintenance of the cage door 1; at the same time, the one-way design ensures the connection stability between the hook plate 13 and the connection member 12 when the hook plate 13 contacts with the connection member 12, thereby avoiding the situation where the hook plate 13 is separated from the connection member 12 when rising, thereby improving stability and safety; and the one-way spring hinge can ensure that the hook plate 13 automatically resets after the cage door 1 is closed, keeping it in the appropriate position, preventing the hook plate 13 from being in a loose state when not in use, and ensuring that the system is always in a ready state.

[0037] An arc baffle 14 is provided on the top of each of the connecting parts 12, and the arc baffle 14 is an arc-shaped plate extending downward; the hook plate 13 enters the frame of the connecting part 12, and on the way of moving upward, due to the vibration generated by the mechanical equipment, the hook plate 13 may be offset in the frame of the connecting part 12, and the arc baffle 14 is provided, and the arc baffle 14 will extend downward by 1-2cm, which limits the hook plate 13 at the physical level, and prevents the hook plate 13 from deviating from the frame of the connecting part 12, causing the lower door 5 to detach from the cage door 1 and move downward, thereby preventing safety hazards and improving stability and safety; and improving the linkage between the three-fold linkage layer door and the cage door 1.

[0038] Each of the sliders 9 is composed of a sliding part 901 and a connecting part 902, each of the sliding part 901 is sleeved on the corresponding guide rail, and each connecting part 902 is a hollow structure; the sliding part 901 is sleeved on the guide rail to ensure that the slider 9 is stable and smooth when moving, and the adjacent connecting parts 902 abut against each other when the connecting parts 902 move upward, which can effectively and synchronously drive the corresponding floor door to move upward, thereby improving the efficiency of opening and closing the door; the hollow design of the connecting part 902 reduces the weight of the slider 9 and reduces the burden on the overall structure, while maintaining sufficient strength and rigidity, thereby enhancing the stability of the system.

[0039] The weights of the upper door 3, the middle door 4 and the lower door 5 increase in sequence; the design of increasing weight can improve the overall stability of the door, ensuring that the door body will not be accidentally opened due to external forces or wind factors during normal use, thereby maintaining a safe environment inside the cage; the lower door 5 with a larger dead weight can effectively prevent accidental opening when closed, preventing the risk of falling or accidents caused by construction workers accidentally opening the door inside the cage, thereby improving safety.

[0040] A linkage control method for a three-folding linkage landing door of a construction elevator, comprising:

[0041] ①, through the limit switch 6 at the bottom of the door frame 2 to detect, the status information is fed back to the control system for processing, all the floor doors are in the closed and locked state, the cage can be started or kept running;

[0042] ②. The floor door is opened or locked in conjunction with the cage door 1 of the intelligent construction elevator, and is locked by its own weight. There is no manual way to open the floor door inside the cage to prevent personnel from opening the floor door from the inside of the floor station.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A three-folding linkage landing door for a construction elevator, characterized in that: include: A cage, wherein a cage door (1) is provided at the front end of the cage, and a protective door is provided between the cage and the cage door (1), wherein the protective door comprises a door frame (2), an upper door (3), a middle door (4) and a lower door (5), wherein the door frame (2) is provided on the cage, wherein the upper door (3), the middle door (4) and the lower door (5) are provided on the door frame (2) in sequence from top to bottom and are designed to be vertically foldable, wherein the upper door (3), the middle door (4) and the lower door (5) are connected to each other via a connecting assembly, and a power assembly for driving the three doors to open and close is provided on the cage door (1), and a limit switch (6) is provided at the bottom of the door frame (2).

2. A three-folding linkage landing door for a construction elevator according to claim 1, characterized in that: The connection assembly comprises two front guide rails (7) and two rear guide rails (8) respectively arranged on the front and rear sides of the door frame (2); the upper door (3), the middle door (4) and the lower door (5) are provided with sliders (9) on the left and right sides; the two sliders (9) of the upper door (3) are sleeved on the corresponding two rear guide rails (8); the two sliders (9) on the middle door (4) and the lower door (5) are sleeved on the corresponding two front guide rails (7); the upper door (3) and the middle door (4) are located inside the door frame (2), while the lower door (5) is located outside the door frame (2); two upper positioning blocks (10) and two lower positioning blocks (11) are provided between the two front guide rails (7) and the rear guide rails (8); the two upper positioning blocks (10) are located in the middle section, and the two lower positioning blocks (11) are located in the lower section.

3. The three-folding linkage landing door of a construction elevator according to claim 1 is characterized in that: The power assembly comprises two connecting members (12) symmetrically arranged on the side of the lower door (5) close to the cage door (1); the connecting member (12) is a frame with a right-angled triangle cross-section, i.e., there is a connecting cavity inside; two hook plates (13) are symmetrically arranged on the side of the cage door (1) close to the lower door (5), and both hook plates (13) are inclined upward, and both hook plates (13) cooperate with the corresponding connecting members (12).

4. The three-folding linkage landing door of a construction elevator according to claim 3 is characterized in that: Each of the hook plates (13) is connected to the cage door (1) via a one-way spring hinge.

5. The three-folding linkage landing door of a construction elevator according to claim 3 is characterized in that: A baffle plate (14) is provided on the top of each connecting member (12), and the baffle plate (14) is an arc-shaped plate extending downward.

6. The three-folding linkage landing door of a construction elevator according to claim 2, characterized in that: Each of the sliding blocks (9) is composed of a sliding portion (901) and a connecting portion (902); each of the sliding portions (901) is sleeved on a corresponding guide rail, and each of the connecting portions (902) is a hollow structure.

7. The three-folding linkage landing door of a construction elevator according to claim 1 is characterized in that: The weights of the upper door (3), the middle door (4) and the lower door (5) increase in sequence.

8. The linkage control method of the three-folding linkage landing door of a construction elevator according to claim 1, comprising: ①, through the limit switch (6) at the bottom of the door frame (2), the status information is fed back to the control system for processing. All the floor doors are in the closed and locked state, and the cage can be started or kept running; ② The landing door is opened or locked in conjunction with the cage door (1) of the intelligent construction elevator and is locked by its own weight. There is no manual way to open the landing door inside the cage, preventing personnel from opening the landing door from the inside of the landing station.

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