Three-folding type linkage landing door of construction hoist

Abstract

The utility model discloses a construction hoist triple folding type linkage landing door which 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, the door frame is arranged on the suspension cage, and the lower layer door is arranged on the upper layer door. 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. According to the utility model, the connecting assembly is arranged between the protective door and the cage door, and the linkage mechanism of the landing doors and the cage door ensures that the cage can be started or operated only under the condition that all the landing doors are completely closed and locked, so that 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 utility model relates to the technical field of construction machinery, in particular to a three-folding linkage landing door of a construction hoist. 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 of floor doors and safety protection measures are particularly important.

[0003] Currently, 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 ignore the correct operation of the protective door due to fatigue or lack of concentration, 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 landing door for a construction elevator is proposed to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this utility model is to address the above-mentioned problems and provide a three-fold linkage landing door for a construction elevator. The utility model provides a connecting assembly between the protective door and the cage door. The linkage mechanism between the landing door and the cage door ensures that the cage will only start or operate when all landing 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 landing door in real time, ensuring that the cage cannot be started when the landing door is not completely closed, thereby further improving safety. In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0007] According to one aspect of the utility model, a three-folding linkage door of a construction elevator is provided, including 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 includes 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 designed to be vertically folding, the upper door, the middle door and the lower door are connected to each other by a connecting assembly, and the cage door is provided with a power assembly for driving the three doors to open and close, 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 sliders are provided on the left and right sides of the upper door, the middle door and the lower door, the two sliders of the upper door are both mounted on the corresponding two rear guide rails, and 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 inside the door frame, while the lower door is located outside the door frame, and 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, and 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 both hook plates are inclined upward, and both of the two hook plates cooperate 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 is provided on the top of each connecting member, and the arc baffle is an arc-shaped plate extending downward.

[0012] Preferably, each of the sliders is composed 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] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] 1. The three-folding linkage door of a construction elevator described in the utility model is equipped with 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 floor doors are completely closed and locked, 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, ensuring that the cage cannot be started when the floor door is not completely closed, further improving safety.

[0016] 2. The three-folding linkage door of a construction elevator described in the utility model improves the overall stability of the protective door by setting the weight of the upper door, middle door and lower door in sequence, and the heavier lower door 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This utility model Figure 1 Rear view;

[0019] Figure 3 This utility model Figure 1 A magnified view of point A;

[0020] Figure 4 This utility model Figure 1 Enlarged view of point B;

[0021] Figure 5 This is a state change diagram of the process of the protective door moving upwards in the utility model;

[0022] In the accompanying drawings, 1. cage door; 2. door frame; 3. upper door; 4. middle door; 5. lower door; 6. limit switch; 7. front guide rail; 8. rear guide rail; 9. slider; 901. sliding part; 902. connecting part; 10. upper positioning block; 11. lower positioning block; 12. connecting piece; 13. hook plate; 14. arc baffle. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in this specification are merely provided to help the reader gain a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0024] See also Figures 1 to 5The utility model provides a three-folding linkage door for a construction elevator, and the technical solution is as follows:

[0025] 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 folding, the upper door 3, the middle door 4 and the lower door 5 are connected to each other through a connecting component, and the cage door 1 is provided with a power component for driving the three doors to open and close, and a limit switch 6 is provided at the bottom of the door frame 2. The three-door design provides better structural stability, can withstand certain external forces, and avoid deformation or damage of the door body due to external impact.

[0026] The existing protective door has no linkage device between it 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 neglect to operate the protective door correctly 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 inside or outside the landing station. Although this design provides convenience, it also greatly increases safety risks.

[0027] 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, 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, 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.

[0028] 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 mounted 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 mounted on the corresponding two front guide rails 7, and 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, 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.

[0029] Then the cage door 1 drives the lower door 5 and the middle door 4 to continue to move upward 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 all opened to the position, that is, the cage door 1 drives the protective door to open an operation.

[0030] The closing process is the opposite of the opening process. The cage door 1 gradually closes downward, and the layer doors move downward together under the action of their own weight. The upper door 3 follows and moves to the position of the two upper positioning blocks 10. Restricted by the upper positioning blocks 10, the upper door 3 no longer moves downward; the cage door 1 continues to close downward, and the lower door 5 and the middle door 4 continue to move downward together. The middle door 4 reaches the position of the two lower positioning blocks 11. Restricted by the lower positioning blocks 11, the middle door 4 no longer moves downward; the remaining lower door 5 continues to move downward 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. The cage door 1 continues to move downward until it is closed.

[0031] The power assembly includes two connecting parts 12 symmetrically arranged on the side of the lower door 5 close to the cage door 1. The connecting part 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 both inclined upward, and the two hook plates 13 are both matched with the corresponding connecting parts 12.

[0032] 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 door and the cage is realized, and the automatic opening and closing of the floor door is completed through the mechanical linkage between the cage door 1 and the floor door, which improves convenience and safety.

[0033] Each of the hook plates 13 is connected to the cage door 1 through 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. During maintenance, when the cage door 1 and the protective door need to be separated, the corresponding hook plate 13 can be retracted, and then the cage door 1 can be raised or lowered to avoid the connector 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 connector 12 when the hook plate 13 contacts the connector 12, avoiding the situation where the hook plate 13 is separated from the connector 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.

[0034] The top of each connecting member 12 is provided with an arc baffle 14, and the arc baffle 14 is an arc-shaped plate extending downward; the hook plate 13 enters the frame of the connecting member 12, and during the upward movement, due to the vibration generated by the mechanical equipment, the hook plate 13 may be offset in the frame of the connecting member 12, and the arc baffle 14 is provided, and the arc baffle 14 will extend downward by 1-2 cm, which limits the hook plate 13 at the physical level, and prevents the hook plate 13 from offsetting out of the frame of the connecting member 12, causing the lower door 5 to separate from the cage door 1 and move downward, thereby preventing safety hazards and improving stability and safety; and improving the linkage between the three-folding linkage layer door and the cage door 1.

[0035] Each of the sliders 9 is composed of a sliding part 901 and a connecting part 902. Each of the sliding parts 901 is mounted on a corresponding guide rail, and each connecting part 902 is a hollow structure. The sliding part 901 is mounted on the guide rail to ensure that the slider 9 is stable and smooth when moving. When the connecting parts 902 move upward, adjacent connecting parts 902 abut against each other, 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.

[0036] 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.

[0037] 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 principles of the present invention. These improvements and modifications should also be regarded as within 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 through 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. The three-folding linkage landing door for a construction elevator according to claim 1, characterized in that: The connecting 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); 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 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 for a construction elevator according to claim 1, characterized in that: The power assembly includes two connecting members (12) symmetrically arranged on the side of the lower door (5) close to the cage door (1), and 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 both inclined upward, and the two hook plates (13) are both matched with the corresponding connecting members (12).

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

6. The three-folding linkage landing door for a construction elevator according to claim 2, characterized in that: Each of the sliders (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 for a construction elevator according to claim 1, characterized in that: The weights of the upper door (3), the middle door (4) and the lower door (5) increase in sequence.

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