Multifunctional lifting platform and using method

Abstract

The invention provides a multifunctional lifting platform and a using method, and belongs to the technical field of underground building structures. Comprising a first frame assembly, a second frame assembly, a power assembly, a lifting door plate and a door frame. The first frame assembly and the second frame assembly form a fixed frame; the power assembly drives the lifting door plate to move relative to the fixed frame, so that the lifting door plate can form various motion states in the fixed frame; the door frame is connected with an external lifting structure, so that the multifunctional lifting platform integrally forms an elevator type structure capable of moving in the vertical shaft in the height direction, and a door sealing function and a lifting function are integrated through the lifting door plate. Therefore, the multifunctional lifting platform integrates multiple functions of opening, closing and vertical transportation of materials and operators in the vertical shaft, and has the characteristics of simple structure, safety and reliability.

Description

Technical Field

[0001] The invention belongs to the technical field of underground building structures and relates to a multifunctional lifting platform and a use method thereof. Background Art

[0002] Currently, the following problems are common with shaft or cellar entrance doors and lifting devices: first, the structure is complex, making installation and maintenance difficult; second, the operation is cumbersome and inconvenient to use; third, lifting mainly relies on ladders or elevators, and installing an elevator will take up a lot of space in the shaft. Summary of the Invention

[0003] Based on the deficiencies in the prior art, the present invention provides a multifunctional lifting platform which is suitable for a shaft or a cellar and has lifting and opening and closing functions.

[0004] The present invention provides a multifunctional lifting platform, comprising a first frame assembly, a second frame assembly, a power assembly, a lifting door panel and a door frame;

[0005] The first frame assembly and the second frame assembly are arranged opposite to each other, and the lower halves of the first frame assembly and the second frame assembly are connected to each other by a plurality of connecting channel steels spaced apart from each other in the vertical direction, and the upper halves of the first frame assembly and the second frame assembly are connected to each other by a door frame;

[0006] The power assembly is provided on the second frame assembly and is used to drive the lifting door panel to move vertically along the first frame assembly and the second frame assembly;

[0007] The door frame is used to be connected to an external lifting structure.

[0008] Furthermore, the first frame assembly includes a first frame and a first support bar and a first support base provided on the first frame;

[0009] The first support bar is arranged on the end surfaces of the first frame and the second frame assembly that are arranged opposite to each other, and the outer end surface of the first support bar and the outer end surface of the first frame are spaced apart from each other;

[0010] The vertical cross-section of the first support base as a whole is conical, and the upper end surface of the first support base and the lower end surface of the first frame are matched with each other to support the first frame.

[0011] Furthermore, the first frame includes a first side segment, a second side segment, a first top connecting segment, and a first bottom connecting segment. The first side segment and the second side segment are arranged parallel to each other. The first top connecting segment is connected to the top ends of the first side segment and the second side segment at the same time. The first bottom connecting segment is connected to the bottom ends of the first side segment and the second side segment at the same time. The first top connecting segment and the first bottom connecting segment are both arranged in an arc structure, so that the overall vertical cross-section of the first frame is elliptical.

[0012] The first support bar includes a third side segment, a fourth side segment, a second top connecting segment and a second bottom connecting segment; the third side segment and the fourth side segment are arranged parallel to each other, the second top connecting segment is connected to the top of the third side segment and the fourth side segment at the same time, and the second bottom connecting segment is connected to the bottom of the third side segment and the fourth side segment at the same time, and the second top connecting segment and the second bottom connecting segment are both arranged in an arc structure, so that the vertical cross-section of the first support bar as a whole is elliptical;

[0013] The upper end surface of the first support base is configured as an inner arc structure that fits in with the outer arc surface of the first bottom connecting section in the first frame.

[0014] Furthermore, the first support bar further includes a first reinforcement section and a second reinforcement section;

[0015] The first reinforcement segment is arranged in a vertical direction, and the second reinforcement segment is arranged in a horizontal direction. The first reinforcement segment and the second reinforcement segment are welded to each other to form a cross structure, and the two ends of the first reinforcement segment are respectively fixedly connected to the middle parts of the second top connecting segment and the second bottom connecting segment, and the two ends of the second reinforcement segment are respectively fixedly connected to the middle parts of the third side segment and the fourth side segment.

[0016] Furthermore, at least two first threaded holes are provided on the two inclined surfaces of the first support base and are spaced apart from each other, and at least two of the connecting channel steels are respectively connected to the first threaded holes by bolts.

[0017] Furthermore, the second frame assembly includes a second frame and a second support bar, a second support base and a protective shell provided on the second frame;

[0018] The structure of the second frame is consistent with that of the first frame;

[0019] The structure of the second support bar is consistent with that of the first support bar;

[0020] The structure of the second support base is consistent with that of the first support base;

[0021] The protective shell is arranged on a side of the second frame away from the first frame, and a single-side transverse cross-section of the protective shell is arranged to be an n-shaped structure.

[0022] Furthermore, the power assembly includes a motor assembly, a double guide wheel, a sprocket assembly and a chain assembly;

[0023] The motor assembly includes a motor and a planetary reducer connected to each other; the fixed end of the motor is fixedly connected to the second frame, and the driving end of the motor is fixedly connected to the planetary reducer;

[0024] The double guide wheels are mounted on the second frame and in contact with the second support bar, and are used to guide and limit the rotational freedom of the motor assembly;

[0025] The sprocket assembly includes a driving sprocket connected to the driving shaft of the planetary reducer through a key, a guide sprocket arranged opposite to the driving sprocket and arranged on the first frame, and a sprocket shaft for connecting the driving sprocket and the guide sprocket, and the sprocket shaft is connected to the lifting door plate;

[0026] The chain assembly is provided with two groups which are respectively arranged on the first frame and the second frame, wherein the chain assembly arranged on the first frame is meshed and connected with the guide sprocket, and the chain assembly arranged on the second frame is meshed and connected with the driving sprocket.

[0027] Furthermore, the chain assembly is composed of a plurality of chain structures, wherein a single chain structure includes a spacer, a single chain and a mounting plate;

[0028] The end surfaces on both sides of a single chain that are in the same position and direction as the sprocket assembly are fixedly connected with mounting plates, and the single mounting plate is fixedly connected to the first frame or the second frame through a pad.

[0029] Furthermore, the motor assembly, the double guide wheel and the sprocket assembly are provided in two groups in a one-to-one correspondence and are respectively arranged on the end surfaces of both sides of the lifting door panel.

[0030] The present invention also provides a method for using the multifunctional lifting platform, comprising:

[0031] When the lifting door panel and the door frame are in a mutually engaged state, the multifunctional lifting platform as described above acts as a shaft elevator. The staff who need to enter the shaft stand on the lifting door panel, and the external lifting structure drives the multifunctional lifting platform to descend in the shaft to bring the staff to the designated position in the shaft.

[0032] When only one of the motor assemblies outputs power and the other set of motor assemblies follows, the lifting door panel is displaced to the chain assembly of the first top connecting section and the second top connecting section, so that the lifting door panel is in an open state; the lifting door panel continues to displace along the chain assembly under the drive of one of the motor assemblies until the lifting door panel runs to a position close to the first bottom connecting section and the second bottom connecting section and is in a horizontal state. At this time, the multi-functional lifting platform performs the material lifting and transportation function; when the lifting or lowering height range of the material to be transported is within the height displacement range of the multi-functional lifting platform, the two sets of motor assemblies output power at the same time to drive the two sets of sprocket assemblies to displace along the two sets of sprocket assemblies, thereby transporting the material from bottom to top or from top to bottom; when the lifting or lowering height range of the material to be transported is greater than the height displacement range of the multi-functional lifting platform, the multi-functional lifting platform is driven by the external lifting mechanism to ascend or descend in the shaft to bring the material to the designated position, thereby completing the material transportation.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention provides a multifunctional lifting platform, comprising a first frame assembly, a second frame assembly, a power assembly, a lifting door panel and a door frame, wherein the first frame assembly and the second frame assembly form a fixed frame; the power assembly drives the lifting door panel to displace relative to the fixed frame, so that the lifting door panel can form a variety of motion states within the fixed frame; the door frame is connected to an external lifting structure to form the multifunctional lifting platform as a whole into an elevator-like structure that can be displaced in the height direction in the vertical shaft, and by arranging the lifting door panel to integrate the door sealing and lifting functions, the multifunctional lifting platform has the multifunctional functions of opening, closing and vertical transportation of materials and operators in the vertical shaft, and has the characteristics of simple structure, safety and reliability.

[0035] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 This is an axonometric diagram of a multifunctional lifting platform according to an embodiment of the present invention;

[0038] Figure 2 yes Figure 1 A schematic structural diagram of the first frame assembly;

[0039] Figure 3 yes Figure 1 A schematic structural diagram of the second frame assembly;

[0040] Figure 4 yes Figure 1 Schematic diagram of the structure of the power component;

[0041] Figure 5 yes Figure 2 Schematic diagram of a single chain structure of the chain assembly;

[0042] Figure 6 This is a schematic diagram of a lifting door panel in an open state in a multifunctional lifting platform according to an embodiment of the present invention.

[0043] in:

[0044] 1. First frame assembly, 1.1. First frame, 1.2. First support bar, 1.3. First support base, 2. Second frame assembly, 2.1. Second frame, 2.2. Second support bar, 2.3. Second support base, 2.4. Protective shell, 3. Power assembly, 3.1. Motor, 3.2. Planetary reducer, 3.3. Double guide wheel, 3.4. Driving sprocket, 3.5. Chain assembly, 3.5.1. Spacer, 3.5.2. Single chain, 3.5.3. Mounting plate, 4. Lifting door panel, 5. Door frame, 6. Connecting channel steel. DETAILED DESCRIPTION

[0045] In order to make the above-mentioned purposes, features and advantages of the present invention more clear and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be noted that the drawings of the present invention are all simplified and non-precisely scaled, and are only used to conveniently and clearly assist in explaining the implementation of the present invention; the "numbers" mentioned in the present invention are not limited to the specific quantities in the examples in the accompanying drawings; the directions or positional relationships indicated by "front", "middle", "back", "left", "right", "up", "down", "top", "bottom", "middle", etc. mentioned in the present invention are based on the directions or positional relationships shown in the drawings of the present invention, and do not indicate or imply that the devices or components referred to must have a specific direction, nor can they be understood as limitations on the present invention.

[0046] Example:

[0047] See also Figures 1 to 5 As shown, a multifunctional lifting platform provided by the present invention includes a first frame assembly 1, a second frame assembly 2, a power assembly 3, a lifting door panel 4 and a door frame 5;

[0048] The first frame assembly 1 and the second frame assembly 2 are arranged opposite to each other, and the lower halves of the first frame assembly 1 and the second frame assembly 2 are connected to each other by a plurality of connecting channel steels 6 arranged at intervals in the vertical direction, and the upper halves of the first frame assembly 1 and the second frame assembly 2 are connected to each other by a door frame 5;

[0049] The power assembly 3 is provided on the second frame assembly 2 and is used to drive the lifting door panel 4 to move vertically along the first frame assembly 1 and the second frame assembly 2 .

[0050] Preferably, the first frame assembly 1 comprises a first frame 1.1 and a first support bar 1.2 and a first support base 1.3 provided on the first frame 1.1;

[0051] The first frame 1.1 is entirely formed by welding steel plates; specifically, the first frame 1.1 includes a first side segment, a second side segment, a first top connecting segment, and a first bottom connecting segment. The first side segment and the second side segment are arranged parallel to each other. The first top connecting segment is connected to the top ends of the first side segment and the second side segment, and the first bottom connecting segment is connected to the bottom ends of the first side segment and the second side segment. The first top connecting segment and the first bottom connecting segment are both configured as arc structures, so that the overall vertical cross-section of the first frame 1.1 is elliptical.

[0052] The first support bar 1.2 is entirely formed by welding steel plates; specifically, the first support bar 1.2 includes a third side segment, a fourth side segment, a second top connecting segment, and a second bottom connecting segment; the third side segment and the fourth side segment are arranged parallel to each other, the second top connecting segment is connected to the tops of both the third and fourth side segments, the second bottom connecting segment is connected to the bottoms of both the third and fourth side segments, and both the second top connecting segment and the second bottom connecting segment are configured as arc structures, so that the overall vertical cross-section of the first support bar 1.2 is elliptical;

[0053] The vertical cross-section of the first support base 1.3 is conical, and the upper end surface of the first support base 1.3 is configured as an inner arc structure that fits in with the outer arc surface of the first bottom connecting section in the first frame 1.1, for supporting the first frame 1.1.

[0054] Further preferably, the first support bar 1.2 also includes a first reinforcement segment and a second reinforcement segment, the first reinforcement segment is arranged in a vertical direction, and the second reinforcement segment is arranged in a horizontal direction, the first reinforcement segment and the second reinforcement segment are welded to each other to form a cross structure, and the two ends of the first reinforcement segment are respectively fixedly connected to the middle parts of the second top connecting segment and the second bottom connecting segment, and the two ends of the second reinforcement segment are respectively fixedly connected to the middle parts of the third side segment and the fourth side segment.

[0055] Further preferably, at least two first threaded holes spaced apart from each other are provided on both inclined surfaces of the first support base 1.3, and at least two connecting channel steels 6 are respectively connected to the first threaded holes by bolts.

[0056] Preferably, the second frame assembly 2 includes a second frame 2.1 and a second support bar 2.2, a second support base 2.3 and a protective shell 2.4 arranged on the second frame 2.1;

[0057] The structure of the second frame 2.1 is consistent with that of the first frame 1.1;

[0058] The structure of the second support bar 2.2 is consistent with that of the first support bar 1.2;

[0059] The structure of the second support base 2.3 is consistent with that of the first support base 1.3;

[0060] The protective shell 2.4 is arranged on a side of the second frame 2.1 away from the first frame 1.1, and a single-side transverse cross-section of the protective shell 2.4 is arranged to be an n-shaped structure.

[0061] Preferably, the power assembly 3 includes a motor assembly, a double guide wheel 3.3, a sprocket assembly and a chain assembly 3.5;

[0062] The motor assembly includes a motor 3.1 and a planetary reducer 3.2 connected to each other. The fixed end of the motor 3.1 is fixedly connected to the second frame 2.1, and the driving end of the motor 3.1 is fixedly connected to the planetary reducer 3.2. The motor 3.1 is disposed in a protective shell 2.4, so that the protective shell 2.4 protects the motor 3.1, the planetary reducer 3.2 and other components.

[0063] The double guide wheel 3.3 is used to guide and limit the rotational freedom of the motor assembly; specifically, the double guide wheel 3.3 is mounted on the second frame 2.1 and is in contact with the second support bar 2.2;

[0064] The sprocket assembly includes a driving sprocket 3.4 connected to the drive shaft of the planetary reducer 3.2 by a key, a guide sprocket arranged opposite to the driving sprocket 3.4 and arranged on the first frame 1.1, and a sprocket shaft for connecting the driving sprocket 3.4 and the guide sprocket, and the sprocket shaft is connected to the lifting door panel 4;

[0065] The chain assembly 3.5 is provided in two groups, one on the first frame 1.1 and the other on the second frame 2.1. The chain assembly 3.5 provided on the first frame 1.1 is meshed with the guide sprocket, and the chain assembly 3.5 provided on the second frame 2.1 is meshed with the driving sprocket 3.4.

[0066] Further preferably, the chain assembly 3.5 is composed of several chain structures, and a single chain structure includes a pad 3.5.1, a single chain 3.5.2 and a mounting plate 3.5.3;

[0067] Mounting plates 3.5.3 are fixedly connected to both side end surfaces of a single chain 3.5.2 that are in the same position and direction as the sprocket assembly. The single mounting plate 3.5.3 is fixedly connected to the first frame 1.1 or the second frame 2.1 through a spacer 3.5.1.

[0068] Further preferably, the motor assembly, the double guide wheel 3.3 and the sprocket assembly are provided in two groups in a one-to-one correspondence and respectively arranged on the end surfaces of both sides of the lifting door panel 4 to ensure the smooth operation of the lifting door panel 4.

[0069] In addition to the above structure, the multifunctional lifting platform also includes a lifting structure for connecting to the door frame 5. The specific structure and connection method of the lifting structure refer to the existing elevator drive structure.

[0070] As a further embodiment of the present invention, the present invention also provides a method for using a multifunctional lifting platform, comprising:

[0071] When the lifting door panel and the door frame are in the state of mutual engagement (see Figure 1 As shown), the multifunctional lifting platform acts as a shaft elevator. Workers who need to enter the shaft stand on the lifting door panel. The external lifting structure drives the multifunctional lifting platform to descend in the shaft to bring the workers to the designated position in the shaft.

[0072] When only one of the motor assemblies outputs and the other motor assembly follows, the lifting door plate moves to the chain assembly of the first top connecting section and the second top connecting section, so that the lifting door plate is in the open state (see Figure 6 The lifting door panel continues to move along the chain assembly under the drive of one of the motor assemblies until the lifting door panel moves to a position close to the first bottom connecting section and the second bottom connecting section and is in a horizontal state. At this time, the multifunctional lifting platform performs the material lifting and transportation function; when the lifting or lowering height range of the material to be transported is within the height displacement range of the multifunctional lifting platform, the two motor assemblies have the same power output to drive the two sprocket assemblies to move along the two sprocket assemblies, thereby transporting the material from bottom to top or from top to bottom, thereby greatly reducing the transportation time and saving power consumption; when the lifting or lowering height range of the material to be transported is greater than the height displacement range of the multifunctional lifting platform, the multifunctional lifting platform is driven by the external lifting mechanism to ascend or descend in the shaft to bring the material to the designated position, thereby completing the material transportation.

[0073] 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 multifunctional lifting platform, characterized in that: It comprises a first frame assembly (1), a second frame assembly (2), a power assembly (3), a lifting door panel (4) and a door frame (5); The first frame assembly (1) and the second frame assembly (2) are arranged opposite to each other, and the lower halves of the first frame assembly (1) and the second frame assembly (2) are connected to each other via a plurality of connecting channel steels (6) spaced apart from each other in a vertical direction, and the upper halves of the first frame assembly (1) and the second frame assembly (2) are connected to each other via a door frame (5); The power assembly (3) is arranged on the second frame assembly (2) and is used to drive the lifting door panel (4) to move in a vertical direction along the first frame assembly (1) and the second frame assembly (2); The door frame (5) is used to be connected to an external lifting structure.

2. The multifunctional lifting platform according to claim 1, characterized in that: The first frame assembly (1) comprises a first frame (1.1), a first support bar (1.2) and a first support base (1.3) arranged on the first frame (1.1); The first support bar (1.2) is arranged on the end surfaces of the first frame (1.1) and the second frame assembly (2) that are arranged opposite to each other, and the outer end surface of the first support bar (1.2) and the outer end surface of the first frame (1.1) are spaced apart from each other; The first support base (1.3) has a tapered vertical cross-section as a whole, and the upper end surface of the first support base (1.3) and the lower end surface of the first frame (1.1) are matched with each other to support the first frame (1.1).

3. The multifunctional lifting platform according to claim 2, characterized in that: The first frame (1.1) comprises a first side section, a second side section, a first top connecting section and a first bottom connecting section, the first side section and the second side section being arranged parallel to each other, the first top connecting section being connected to the top ends of the first side section and the second side section, the first bottom connecting section being connected to the bottom ends of the first side section and the second side section, and both the first top connecting section and the first bottom connecting section being arranged in an arc structure, so that the overall vertical cross-section of the first frame (1.1) is elliptical; The first support bar (1.2) comprises a third side section, a fourth side section, a second top connecting section and a second bottom connecting section; the third side section and the fourth side section are arranged parallel to each other, the second top connecting section is connected to the tops of the third side section and the fourth side section at the same time, the second bottom connecting section is connected to the bottoms of the third side section and the fourth side section at the same time, and the second top connecting section and the second bottom connecting section are both arranged as arc structures, so that the overall vertical cross-section of the first support bar (1.2) is elliptical; The upper end surface of the first supporting base (1.3) is configured as an inner arc structure that fits in contact with the outer arc surface of the first bottom connecting section in the first frame (1.1).

4. The multifunctional lifting platform according to claim 3, characterized in that: The first support bar (1.2) further comprises a first reinforcement section and a second reinforcement section; The first reinforcement segment is arranged in a vertical direction, and the second reinforcement segment is arranged in a horizontal direction. The first reinforcement segment and the second reinforcement segment are welded to each other to form a cross structure, and the two ends of the first reinforcement segment are respectively fixedly connected to the middle parts of the second top connecting segment and the second bottom connecting segment, and the two ends of the second reinforcement segment are respectively fixedly connected to the middle parts of the third side segment and the fourth side segment.

5. The multifunctional lifting platform according to claim 3, characterized in that: At least two first threaded holes are provided on both inclined surfaces of the first support base (1.3) and are spaced apart from each other. At least two connecting channel steels (6) are respectively connected to the first threaded holes via bolts.

6. The multifunctional lifting platform according to any one of claims 2 to 5, characterized in that: The second frame assembly (2) comprises a second frame (2.1), a second support bar (2.2), a second support base (2.3) and a protective shell (2.4) arranged on the second frame (2.1); The structure of the second frame (2.1) is consistent with that of the first frame (1.1); The structure of the second support bar (2.2) is consistent with that of the first support bar (1.2); The structure of the second support base (2.3) is consistent with that of the first support base (1.3); The protective shell (2.4) is arranged on a side of the second frame (2.1) away from the first frame (1.1), and a single-side transverse cross-section of the protective shell (2.4) is arranged to be an n-shaped structure.

7. The multifunctional lifting platform according to claim 6, characterized in that: The power assembly (3) includes a motor assembly, a double guide wheel (3.3), a sprocket assembly and a chain assembly (3.5); The motor assembly comprises a motor (3.1) and a planetary reducer (3.2) connected to each other; the fixed end of the motor (3.1) is fixedly connected to the second frame (2.1), and the driving end of the motor (3.1) is fixedly connected to the planetary reducer (3.2); The double guide wheel (3.3) is mounted on the second frame (2.1) and contacts the second support bar (2.2), and is used to guide and limit the rotational freedom of the motor assembly; The sprocket assembly comprises a driving sprocket (3.4) connected to the drive shaft of the planetary reducer (3.2) via a key, a guide sprocket arranged opposite to the driving sprocket (3.4) and arranged on the first frame (1.1), and a sprocket shaft for connecting the driving sprocket (3.4) and the guide sprocket, the sprocket shaft being connected to the lifting door panel (4); The chain assembly (3.5) is provided with two groups, which are respectively arranged on the first frame (1.1) and the second frame (2.1), wherein the chain assembly (3.5) arranged on the first frame (1.1) is meshed and connected with the guide sprocket, and the chain assembly (3.5) arranged on the second frame (2.1) is meshed and connected with the driving sprocket (3.4).

8. The multifunctional lifting platform according to claim 7, characterized in that: The chain assembly (3.5) is composed of a plurality of chain structures, wherein a single chain structure comprises a spacer (3.5.1), a single chain (3.5.2) and a mounting plate (3.5.3); Mounting plates (3.5.3) are fixedly connected to both end faces of a single chain (3.5.2) that are aligned with the sprocket assembly. The single mounting plate (3.5.3) is fixedly connected to the first frame (1.1) or the second frame (2.1) via a spacer (3.5.1).

9. The multifunctional lifting platform according to claim 8, characterized in that: The motor assembly, the double guide wheel (3.3) and the sprocket assembly are provided in two groups arranged in a one-to-one correspondence and respectively arranged on the end surfaces of both sides of the lifting door panel (4).

10. A method for using a multifunctional lifting platform, characterized in that: include: When the lifting door panel and the door frame are in a mutually engaged state, the multifunctional lifting platform according to claim 8 acts as a shaft elevator. Workers who need to enter the shaft stand on the lifting door panel, and the external lifting structure drives the multifunctional lifting platform to descend in the shaft to bring the workers to a designated position in the shaft. When only one of the motor assemblies outputs power and the other motor assembly follows, the lifting door panel moves to the chain assembly of the first top connecting section and the second top connecting section, so that the lifting door panel is in an open state; The lifting door panel continues to move along the chain assembly under the drive of one of the motor assemblies until the lifting door panel moves to a position close to the first bottom connecting section and the second bottom connecting section and is in a horizontal state. At this time, the multi-functional lifting platform performs the material lifting and transportation function; when the lifting or lowering height range of the material to be transported is within the height displacement range of the multi-functional lifting platform, the two motor assemblies output the same power to drive the two sprocket assemblies to move along the two sprocket assemblies, thereby transporting the material from bottom to top or from top to bottom; when the lifting or lowering height range of the material to be transported is greater than the height displacement range of the multi-functional lifting platform, the multi-functional lifting platform is driven by the external lifting mechanism to ascend or descend in the shaft to bring the material to the designated position, thereby completing the material transportation.

Images