Lifting platform capable of automatically opening and closing door

Abstract

The utility model relates to the technical field of lifting platforms, in particular to an automatic door opening and closing lifting platform. Comprising a frame and a lifting basket, the upper portion of the frame is a second-layer area, the lower portion of the frame is a first-layer area, the lifting basket moves between the first-layer area and the second-layer area, a first connecting point is arranged on the first-layer area, a first pulley is arranged on the second-layer area, a second pulley is arranged on the lifting basket, a first-layer opening and closing door is arranged on the first-layer area, and a cable is arranged in the frame. One end of the cable is connected with the first-layer opening and closing door, the cable sequentially bypasses the upper portion of the first pulley and the lower portion of the second pulley, and the other end of the cable is connected with the first connecting point. Through the structure of the pulley block, automatic control over door opening and closing of the lifting platform is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting platforms, in particular to an automatic door opening and closing lifting platform. Background Art

[0002] In scenarios such as factories and on-site construction, it is often necessary to set up temporary lifting platforms for the up and down transportation of materials. Among the common lifting platforms, most of them adopt the form of electric door opening or manual door opening. For example, a high-safety lifting platform authorized by China Patent Authorization Announcement No. CN219546438U on August 18, 2023 includes a foundation, a plurality of support frames are fixedly connected to the bottom inner wall of the foundation, the top of the support frame is fixedly connected to the platform body, the left and right front ends and rear ends of the platform body are fixedly connected to anti-fall movable hooks, and the left and right front and rear ends of the top and bottom of the platform body are fixedly connected to the first sliding wheel. In this utility model, after the platform body moves to each floor, the rolling shutter retracts the rolling door, and the lifting door is manually opened for entry and exit. After entry and exit, the rolling shutter door is closed by the rolling shutter, and the platform can now rise or fall. After manually entering the platform and closing the rolling door, the platform can move. This can prevent the platform from accidentally touching the operation during the door opening and closing process, causing injuries to the staff, thereby ensuring the safety of the staff.

[0003] The opening and closing of the doors of this type of lifting platform requires manual control, which has a great impact on the efficiency of goods entering and exiting the lifting platform. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to:

[0005] 1. Provide an automatic door opening and closing lifting platform, which adopts a pulley group combined with the door opening and closing to realize automatic control of the lifting platform door opening and closing.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic door opening and closing lifting platform, comprising a frame and a lifting basket, the upper part of the frame being a second-layer area, the lower part of the frame being a first-layer area, the lifting basket moving between the first-layer area and the second-layer area, a first connection point being provided on the first-layer area, a first pulley being provided on the second-layer area, a second pulley being provided on the lifting basket, a layer of opening and closing doors being provided on the first-layer area, a cable being provided in the frame, one end of the cable being connected to the first-layer opening and closing doors, the cable passing over the first pulley and under the second pulley in sequence, and the other end of the cable being connected to the first connection point.

[0007] As the basket moves downward, the cable is pulled by the second pulley to form a broken line between the first pulley and the first connection point. Because the cable's length is fixed, the first-floor door is pulled up by the cable to open. When the basket reaches the bottom, the distance "a" between the second pulley and the first connection point should be greater than half the height of the first-floor door. Furthermore, the first-floor door in this solution also serves as a counterweight for the basket. When the mass of the first-floor door is half that of the basket, the two are in equilibrium within the pulley system.

[0008] Optionally, a third pulley is further provided on the first connection point, and the cable passes over the third pulley.

[0009] Providing a rotation point for the cable at the first connection point by the third pulley can effectively reduce wear caused by direct rotation of the cable at the first connection point.

[0010] Optionally, the second-layer area is further provided with a second-layer switch door, a baffle is provided at the bottom of the second-layer switch door, and a top rod is provided on the lifting basket, and the top rod cooperates with the position of the baffle.

[0011] When the lifting basket moves upward to the second floor, its top rod pushes against the baffle and moves upward, driving the second floor door to move upward to open the door. Conversely, when the lifting basket moves downward to the first floor, its top rod pushes against the baffle and moves downward, and the second floor door is closed by gravity.

[0012] Optionally, the first-layer switch door, the cable, the first pulley, the second pulley, and the first connection point are each provided with two and are arranged symmetrically on the frame.

[0013] The symmetrical arrangement on the frame helps to ensure the balance of the lifting basket during operation.

[0014] Optionally, the height of the first-floor opening and closing door is greater than 1 meter.

[0015] Optionally, the height of the second-floor opening and closing door is greater than 1 meter.

[0016] Optionally, the frame is greater than 7 meters.

[0017] The beneficial technical effects of the utility model are: automatic control of the opening and closing of the lifting platform door is achieved through the structure of the pulley group; automatic control of the opening and closing of the second floor door of the lifting platform is achieved through the design of the top rod and the baffle. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a side structural diagram of the lifting basket of the utility model when it is on the first floor;

[0019] Figure 2This is a side structural diagram of the lifting basket of the utility model when it is on the second floor;

[0020] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0021] Figure 4 This is an enlarged side structural diagram of the third pulley when the lifting basket of the utility model is on the first floor;

[0022] Figure 5 This is an enlarged side structural diagram of the first pulley when the lifting basket of the utility model is on the second floor.

[0023] Figure numerals: 1-frame, 2-lifting basket, 3-first pulley, 4-second pulley, 5-first floor opening and closing door, 6-second floor opening and closing door, 7-cable, 8-third pulley, 9-baffle, 10-top rod. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0025] Reference Figure 1-5 As shown, an automatic door opening and closing lifting platform includes a frame 1 and a lifting basket 2. The upper part of the frame 1 is a second-floor area, and the lower part of the frame 1 is a first-floor area. The lifting basket 2 moves between the first-floor area and the second-floor area. A first connection point is provided on the first-floor area, a first pulley 3 is provided on the second-floor area, a second pulley 4 is provided on the lifting basket 2, and a layer of opening and closing doors 5 is provided on the first-floor area. A cable 7 is provided in the frame 1, one end of the cable 7 is connected to the first-floor opening and closing door 5, and the cable 7 passes over the first pulley 3 and under the second pulley 4 in sequence, and the other end of the cable 7 is connected to the first connection point.

[0026] A third pulley 8 is also provided on the first connection point, and the cable 7 is passed over the third pulley 8. A second-floor switch door 6 is also provided on the second floor area, and a baffle 9 extends from the bottom of the second-floor switch door 6 toward the lifting basket 2. A top rod 10 is provided on the lifting basket 2, and the top rod 10 is matched with the baffle 9.

[0027] Two first-floor switch doors 5, cables 7, first pulleys 3, second pulleys 4, and first connection points are provided and arranged symmetrically on the frame 1. The overall height of the frame 1 is 7.8 meters. The first-floor switch door 5 and the second-floor switch door 6 are the same size, and their height is 1.04 meters.

[0028] The first and second layer doors 5 and 6 can be solid doors or grid-like fences, but there should be a gap between the first and second layer doors 5 and 6 so that the user can visually observe the up and down movement of the equipment and the movement of the lifting basket 2 behind it when the equipment is working, so as to ensure the normal operation of the equipment. This solution is formed on the premise that the driving device of the existing technology in the lifting platform drives the lifting basket 2. Figure 1-3 The driving device in the prior art is omitted.

[0029] When the lifting basket 2 moves downward, the cable 7 is driven by the second pulley 4 to form a broken line between the first pulley 3 and the first connection point. Since the length of the cable 7 itself is fixed, the first-floor switch door 5 will be pulled up by the cable 7 to complete the door opening action. When the lifting basket 2 drops to the bottom, the distance a between the second pulley 4 and the first connection point should be greater than more than half the height of the first-floor switch door 5. In addition, the first-floor switch door 5 of this solution can also serve as a counterweight for the lifting basket 2 in the device. When the mass of the first-floor switch door 5 is half of that of the lifting basket 2, the two are in a balanced state in the pulley group. When the lifting basket 2 gradually moves upward to the second-floor area, its top rod 10 pushes against the baffle 9 and moves upward, driving the second-floor switch door 6 to move upward to complete the door opening action. On the contrary, when the lifting basket 2 moves downward to the first-floor area, its top rod 10 pushes against the baffle 9 and moves downward, and the second-floor switch door 6 is affected by gravity to complete the door closing action.

[0030] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic door opening and closing lifting platform, characterized by: It includes a frame and a lifting basket, the upper part of the frame is a second-floor area, and the lower part of the frame is a first-floor area. The lifting basket moves between the first-floor area and the second-floor area. A first connection point is provided on the first-floor area, a first pulley is provided on the second-floor area, a second pulley is provided on the lifting basket, and a layer of opening and closing doors is provided on the first-floor area. A cable is provided in the frame, one end of the cable is connected to the first-floor opening and closing door, and the cable passes over the top of the first pulley and under the second pulley in sequence, and the other end of the cable is connected to the first connection point.

2. The automatic door opening and closing lifting platform according to claim 1, characterized in that: A third pulley is also provided on the first connection point, and the cable passes over the third pulley.

3. The automatic door opening and closing lifting platform according to claim 2, characterized in that: The second-layer area is also provided with a second-layer switch door, the bottom of the second-layer switch door is provided with a baffle, and the lifting basket is provided with a push rod, and the push rod is matched with the position of the baffle.

4. An automatic door opening and closing lifting platform according to any one of claims 1 to 3, characterized in that: The first-layer opening and closing door, the cable, the first pulley, the second pulley, and the first connection point are all provided in pairs and are arranged symmetrically on the frame.

5. An automatic door opening and closing lifting platform according to any one of claims 1 to 3, characterized in that: The height of the first-floor opening and closing door is greater than 1 meter.

6. The automatic door opening and closing lifting platform according to claim 3, characterized in that: The height of the second-floor opening and closing door is greater than 1 meter.

7. An automatic door opening and closing lifting platform according to any one of claims 1 to 3, characterized in that: The frame is larger than 7 meters.

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