Stacking device and transportation system

Abstract

The utility model provides a stacking device and a transportation system.The stacking device comprises a fixing frame, a lifting device and a lifting device, the movable bracket is arranged on the fixed frame and can move relative to the fixed frame in the height direction of the fixed frame; the supporting arm is arranged on the movable bracket; the lifting assembly is connected with the movable support and is configured to drive the movable support to move along the fixed frame so as to enable the supporting arm to move to a designated position; wherein the movable bracket comprises a first movable bracket and a second movable bracket; the first movable bracket is arranged on the fixed frame; the second moving support is connected with the first moving support and the supporting arm and is configured to move synchronously with the first moving support. The device has an adjustable multi-height stroke range, and the supporting arm can reach any position specified by a worker so as to meet the operation requirements of different heights; compared with the prior art, a plurality of original stackers can be replaced by only one device, so that the problem of collision in the disassembly and assembly process is avoided, and the safety in the disassembly and assembly process is ensured.

Description

Technical Field

[0001] The present application relates to the field of semiconductor equipment disassembly and assembly, and in particular to a stacking device and a transportation system. Background Art

[0002] The structure of semiconductor equipment is complex and precise. In order to ensure safety when disassembling and assembling semiconductor equipment on site, forklifts are often used as disassembly and assembly tools.

[0003] Since different semiconductor equipment has different heights, and a single stacker has a single height range that cannot meet the needs of equipment disassembly and assembly, the factory often needs to prepare multiple stackers with different height ranges to adapt to the height and environmental operations of different semiconductor equipment. In the actual equipment disassembly and assembly process, due to the complex working environment, different stackers may encounter bumps and other problems when performing various actions, which will not only have a certain impact on the precision of the equipment, but also affect the progress of disassembly and assembly, delay the project deadline, and increase project costs.

[0004] Therefore, how to provide a stacking device with a multi-height travel range is a technical problem that those skilled in the art need to solve urgently. Utility Model Content

[0005] The present application provides a stacking device and a transport system, wherein the stacking device has an adjustable multi-height travel range, so that the support arm can reach a specified position, and can meet the installation and disassembly requirements of equipment of various heights.

[0006] In order to achieve the above-mentioned object, the first aspect of the present application provides a stacking device, comprising:

[0007] Fixed frame;

[0008] The movable bracket is arranged on the fixed bracket and is configured to be movable relative to the fixed bracket along its height direction;

[0009] A support arm is provided on the mobile support;

[0010] The lifting assembly is connected to the movable bracket and is configured to drive the movable bracket to move along the fixed bracket so that the support arm moves to a specified position.

[0011] Preferably, the mobile bracket includes a first mobile bracket and a second mobile bracket;

[0012] A first movable bracket is arranged on the fixed bracket;

[0013] The second movable bracket is connected to the first movable bracket and the support arm respectively, and is configured to move synchronously with the first movable bracket.

[0014] Preferably, there is a preset angle between the length direction of the first movable bracket and the length direction of the second movable bracket.

[0015] Preferably, the lifting assembly includes a plurality of pulley blocks and a plurality of traction ropes;

[0016] A pulley block, one part of which is arranged on the fixed frame and the other part is arranged on the movable frame;

[0017] The traction rope is passed through the pulley block and is configured to traction the pulley block to rotate so as to drive the movable bracket to move along the height direction of the fixed bracket.

[0018] Preferably, the plurality of pulley sets include a first pulley set, a second pulley set and a third pulley set;

[0019] A first pulley block is arranged at one end of the first movable bracket close to the fixed bracket;

[0020] A second pulley block is disposed on the fixed frame and is located above the first pulley block along the height direction of the fixed frame;

[0021] The third pulley block is arranged at one end of the first movable bracket away from the fixed bracket.

[0022] Preferably, the traction rope comprises a first traction rope and a second traction rope;

[0023] A first traction rope is passed through the first pulley block and the second pulley block, and is configured to pull the first pulley block and the second pulley block to rotate, so as to drive the first movable bracket to move along the height direction of the fixed bracket;

[0024] The second traction rope is passed through the third pulley block and is configured to pull the third pulley block to rotate, so as to drive the second movable bracket and the first movable bracket to move synchronously.

[0025] Preferably, the stacking device further comprises a hinge wheel and a driving device;

[0026] A hinge wheel connected to the first traction rope;

[0027] The driving device is connected to the hinge wheel and is configured to drive the hinge wheel to rotate, so that the first traction rope is wrapped around or detached from the hinge wheel, driving the first movable bracket to move along the height direction of the fixed bracket through the first pulley group and the second pulley group, and then driving the second movable bracket to move synchronously with the first movable bracket through the third pulley group, so that the support arm moves to the specified position.

[0028] Preferably, the end of the fixed frame close to the movable bracket is the top end, and the end away from the movable bracket is the bottom end;

[0029] The support arm includes a support surface; the support surface is configured to support an object; and the support surface is inclined upwardly relative to a direction from the bottom end to the top end.

[0030] Preferably, the stacking device further comprises an adjusting member;

[0031] The support arm also includes a connection surface; the connection surface is configured to connect to the mobile bracket;

[0032] The adjusting member is arranged between the supporting arm and the movable bracket and is configured to adjust the distance between the connecting surface and the movable bracket so that the supporting surface is inclined upward relative to the direction from the bottom end to the top end.

[0033] Preferably, the adjusting member is an adjusting bolt.

[0034] A second aspect of the present application provides a transportation system, comprising: the stacking device provided in the first aspect.

[0035] In combination with the embodiments provided in this application, the following technical effects are disclosed:

[0036] The present application provides a stacking device and a transportation system, wherein the stacking device comprises: a fixed frame; a mobile support, which is arranged on the fixed frame and configured to be movable relative to the fixed frame along its height direction; a support arm, which is arranged on the mobile support; a lifting assembly, which is connected to the mobile support and configured to drive the mobile support to move along the fixed frame so that the support arm moves to a specified position; wherein the mobile support comprises a first mobile support and a second mobile support; the first mobile support is arranged on the fixed frame; the second mobile support is respectively connected to the first mobile support and the support arm, and configured to move synchronously with the first mobile support. The device has an adjustable multi-height travel range, which enables the support arm to reach any position specified by the staff to meet the operation requirements of different heights; compared with the prior art, only one device is needed to replace the original multiple stacking trucks, avoiding the problem of collision during the disassembly and assembly process, and ensuring the safety of the disassembly and assembly process. Among them, the device realizes the lifting function in the height direction through the collaborative work of a series of components, and the mobile support is a movable part of the device, which can move in the height direction of the fixed frame. Such a design allows the device to rise or fall in the vertical direction to meet the operation requirements of different heights.

[0037] Preferably, the lifting assembly may adopt a pulley block, and the use of the pulley block can change the direction of the force and reduce the required traction force through mechanical advantage, making the lifting of the mobile bracket easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1It is one of the schematic diagrams of the stacking device provided in the embodiment of the present application;

[0040] Figure 2 This is the second schematic diagram of the stacking device provided in the embodiment of the present application;

[0041] Figure 3 This is the third schematic diagram of the stacking device provided in the embodiment of the present application;

[0042] Figure 4 This is the fourth schematic diagram of the stacking device provided in the embodiment of the present application;

[0043] Figure 5 This is one of the state comparison diagrams of the support arm provided in the embodiment of the present application;

[0044] Figure 6 This is the second state comparison diagram of the support arm provided in the embodiment of the present application.

[0045] Description of the drawings: 10, fixed frame; 20, movable bracket; 21, first movable bracket; 22, second movable bracket; 30, pulley block; 31, first pulley block; 32, second pulley block; 33, third pulley block; 40, support arm; 50, traction rope; 51, first traction rope; 52, second traction rope; 60, fixing member; 70, hinge wheel; 80, adjusting member; 90, rotating rod. DETAILED DESCRIPTION

[0046] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0047] As described in the background technology, since different semiconductor devices have different heights, and the height travel range of a single stacker is single and cannot meet the needs of equipment disassembly and assembly, the factory often needs to prepare multiple stackers with different height travel ranges during the disassembly and assembly process to adapt to the height and environmental operations of different semiconductor devices. In the actual equipment disassembly and assembly process, due to the complex working environment, different stackers may encounter problems such as bumps when performing various actions, which will not only have a certain impact on the precision of the equipment, but also affect the progress of disassembly and assembly, delay the project deadline, and increase the project cost.

[0048] In order to solve the above problems, the core of the present application is to provide a stacking device with a multi-height travel range, so as to move the support arm to the position specified by the staff to complete the disassembly and assembly of the equipment.

[0049] Example 1

[0050] Embodiment 1 of the present application provides a stacking device, such as Figures 1 to 4As shown, it includes: a fixed frame 10; a movable bracket 20, which is arranged on the fixed frame 10 and is configured to be movable relative to the fixed frame 10 along its height direction; a support arm 40, which is arranged on the movable bracket 20; and a lifting component, which is connected to the movable bracket 20 and is configured to drive the movable bracket 20 to move along the fixed frame 10 so that the support arm 40 moves to a specified position.

[0051] Among them, combined with the background technology, it can be known that the disassembly and assembly of semiconductor equipment often requires a stacker truck to have sufficient height travel to adapt to the height changes of the equipment, but the existing stacker trucks cannot provide a sufficient travel range, resulting in the inability to meet the installation and disassembly requirements of the equipment. The present device has an adjustable multi-height travel range, which enables the support arm 40 to reach any position specified by the staff to adapt to the operation requirements of different heights; compared with the prior art, only one device of the present device is needed to replace the original multiple stackers, avoiding the problem of bumps during the disassembly and assembly process, and ensuring the safety of the disassembly and assembly process. The present device realizes the lifting function in the height direction through the coordinated work of a series of components. The movable bracket 20 is the movable part of the device, which can move in the height direction of the fixed frame 10. Such a design allows the device to rise or fall in the vertical direction to adapt to the operation requirements of different heights.

[0052] In practical applications, the support arm 40 can be installed at any position of the mobile bracket 20 , but in order to ensure that the device has the highest travel range, the support arm 40 can be set at the top of the mobile bracket 20 .

[0053] In a preferred embodiment of the present application, Figures 1 to 4 As shown, the mobile bracket 20 includes a first mobile bracket 21 and a second mobile bracket 22; the first mobile bracket 21 is arranged on the fixed bracket 10; the second mobile bracket 22 is connected to the first mobile bracket 21 and the support arm 40 respectively, and is configured to move synchronously with the first mobile bracket 21.

[0054] The movable bracket 20 is composed of two parts, and the two parts can move synchronously. For example, when the first movable bracket 21 rises relative to the fixed bracket 10, the second movable bracket 22 can rise synchronously with the first movable bracket 21, so that the support arm 40 reaches the specified position. The support arm 40 has a movable range. When the first movable bracket 21 and the second movable bracket 22 rise to the limit height, the support arm 40 can reach the preset maximum height of the movable range, which meets the requirements of most semiconductor equipment disassembly and assembly and the construction height requirements of most FABs.

[0055] In a preferred embodiment of the present application, Figures 1 to 4 As shown, the first movable bracket 21 and the second movable bracket 22 are both rectangular.

[0056] Among them, the two are designed to be rectangular. Due to its symmetry, the rectangular bracket usually has good structural stability and can withstand greater loads during the disassembly and assembly of semiconductor equipment. At the same time, the manufacturing and assembly costs of the rectangular bracket are lower than those of brackets of other shapes. In addition, in the limited disassembly and assembly space environment of semiconductor equipment, the rectangular design can occupy a smaller space to avoid bumping. In addition, the rectangular bracket has strong adaptability and expansibility. If you want to increase the height of the support arm 40, you only need to install a number of movable brackets on the original basis to achieve the expansion of the height travel range of the device.

[0057] In a preferred embodiment of the present application, there is a preset angle between the length direction of the first movable bracket 21 and the length direction of the second movable bracket 22 .

[0058] Among them, the preset angle can be 90°, that is, the length direction of the first mobile bracket 21 is perpendicular to the length direction of the second mobile bracket 22; the length directions of the two brackets are perpendicular. This design is to ensure that the support arm 40 will not be deflected to the left or right when installed on the second mobile bracket 22. A slight deflection may cause uneven force on the device when the support arm 40 moves up and down, thereby causing damage to the internal structure of the device. It may also cause the weight of the equipment to be pressed to the deflected side, and the support arm 40 cannot exert its full supporting capacity. In severe cases, it will cause the equipment and the device to overturn together, damaging the equipment and the device, affecting the progress of disassembly and assembly, and increasing project costs.

[0059] Example 2

[0060] Based on Example 1, Example 2 of the present application provides the specific composition of the lifting assembly, the connection relationship between the pulley block and the traction rope, and realizes the movement of the mobile bracket through the traction rope and the pulley block.

[0061] In a preferred embodiment of the present application, Figures 1 to 4 As shown, the lifting assembly includes a plurality of pulley blocks 30 and a plurality of traction ropes 50; a portion of the pulley block 30 is disposed on the fixed frame 10, and another portion is disposed on the movable support 20; the traction rope 50 is passed through the pulley block 30 and is configured to traction the pulley block 30 to rotate, so as to drive the movable support 20 to move along the height direction of the fixed frame 10.

[0062] The use of the pulley block 30 can change the direction of the force and reduce the required traction force through mechanical advantage, making the lifting and lowering of the mobile bracket 20 easier.

[0063] In a preferred embodiment of the present application, Figures 1 to 4As shown, the plurality of pulley groups 30 include a first pulley group 31, a second pulley group 32 and a third pulley group 33; the first pulley group 31 is disposed at one end of the first movable bracket 21 close to the fixed bracket 10; the second pulley group 32 is disposed at the fixed bracket 10 and is located above the first pulley group 31 along the height direction of the fixed bracket 10; the third pulley group 33 is disposed at one end of the first movable bracket 21 away from the fixed bracket 10.

[0064] In the case of external traction, the first mobile bracket 21 is raised and lowered through the first pulley block 31 and the second pulley block 32, and the second mobile bracket 22 is raised and lowered through the third pulley block 33. Because the first mobile bracket 21 is arranged on the fixed frame 10, the position of the first pulley block 31 should always be kept below the second pulley block 32, otherwise the first mobile bracket 21 will fall off the fixed frame 10 when it moves upward to the limit position.

[0065] In a preferred embodiment of the present application, Figures 1 to 4 As shown, the stacking device further includes a plurality of fixing members 60 ; the fixing members 60 are disposed on the fixing frame 10 and are located on the same horizontal line as the plurality of second pulley blocks 32 .

[0066] In an optional embodiment of the present application, the fixing member 60 adopts a circular fixing buckle to ensure the stability of the rope end connection of the traction rope.

[0067] In a preferred embodiment of the present application, the traction rope 50 includes a first traction rope 51; the first traction rope 51 includes a first body, and a first end and a second end relative to the first body; the first end is connected to the fixing member 60; the second end passes through the first pulley group 31 and the second pulley group 32, so that the first body is passed between the first pulley group 31 and the second pulley group 32, and is configured to pull the first pulley group 31 and the second pulley group 32 to rotate, so as to drive the first movable bracket 21 to move along the height direction of the fixed frame 10.

[0068] Among them, the first end of the first traction rope 51 is fixed to the fixing member 60, and when traction force is applied to the second end, the first traction rope 51 passing through the first pulley group 31 and the second pulley group 32 shrinks; since the first pulley group 31 is fixed, during the continuous shrinkage of the first traction rope 51, the second pulley group 32 is driven to move upward in the direction of the first pulley group 31, so as to drive the first movable bracket 21 to move upward.

[0069] In a preferred embodiment of the present application, Figures 1 to 4As shown, the traction rope 50 also includes a second traction rope 52; the second traction rope 52 includes a second body, and a third end and a fourth end relative to the second body; the third end is connected to the fixing member 60; the fourth end passes through the third pulley group 33, so that the second body is passed between several third pulley groups 33, and is connected to the second movable bracket 22, and is configured to pull the third pulley group 33 to rotate, so as to drive the second movable bracket 22 and the first movable bracket 21 to move synchronously.

[0070] Among them, the third end of the second traction rope 52 is fixed to the fixing member 60; two concepts are introduced here. Since the length of the second traction rope 52 is fixed and passes through the third pulley group 33, the part of the second traction rope 52 connecting the third pulley group 33 to the second movable bracket 22 is called the first section, and the part of the second traction rope 52 connecting the third pulley group 33 to the third end is called the second section; when the first movable bracket 21 moves upward, since the third end of the second traction rope 52 is fixed and the fourth end is connected to the second movable bracket 22, the first section is shortened relative to the second section, and the second section is increased relative to the first section, so as to drive the second movable bracket 22 to move upward.

[0071] Example 3

[0072] Since the precision of semiconductor equipment requires a high degree of precision in the operation of the disassembly and assembly process, existing stackers have deficiencies in lifting speed control, positioning accuracy, etc., and cannot provide sufficiently precise operations, which will cause potential risks to the integrity and performance of the equipment. Therefore, on the basis of Example 2, Example 3 of the present application provides a device for accurately controlling the movement of the mobile bracket.

[0073] In a preferred embodiment of the present application, Figures 1 to 4 As shown, the stacking device also includes a hinge wheel 70 and a driving device (not shown in the figure); the hinge wheel 70 is connected to the second end of the first traction rope 51; the driving device is connected to the hinge wheel 70 and is configured to drive the hinge wheel 70 to rotate, so that the first body is wrapped around or detached from the hinge wheel 70, driving the first movable bracket 21 to move along the height direction of the fixed frame 10 through the first pulley group 31 and the second pulley group 32, and then driving the second movable bracket 22 to move synchronously with the first movable bracket 21 through the third pulley group 33, so that the support arm 40 moves to the specified position.

[0074] Among them, the method of using a driving device to drive the hinge wheel 70 to rotate has higher precision than the original method of using a hand-cranked hinge wheel. The staff's hand-cranking accuracy is poor and they cannot send the support arm 40 to a relatively precise position. After using the driving device, the support arm 40 can be accurately driven to the specified position.

[0075] In a preferred embodiment of the present application, the driving device includes a motor and a reducer; the reducer is connected to the motor; and the output shaft of the motor is connected to the hinge wheel 70.

[0076] The motor is the main driving device. At the same time, the use of the reducer can reduce the motor speed and significantly increase the output torque, thereby easily sending the support arm 40 to the specified position. In addition, the reducer will also bear a large torque during operation. When an overload occurs, the reducer can first bear the impact of the overload to protect the motor from damage.

[0077] In some embodiments of the present application, when the motor rotates forward, the driving wheel 70 rotates forward, the first traction rope 51 is wound around the wheel 70, and the first movable bracket 21 moves upward through the first pulley group 31 and the second pulley group 32 under the action of the traction force applied by the first traction rope 51, and the second movable bracket 22 moves upward through the third pulley group 33 under the action of the traction force applied by the second traction rope 52, so as to drive the support arm 40 to move upward to the specified position, and then place the equipment on the support arm 40.

[0078] In some embodiments of the present application, when the motor reverses, the driving wheel 70 reverses, the first traction rope 51 is unwound and detached from the wheel 70, and the traction force applied by the first traction rope 51 to the first movable bracket 21 through the first pulley group 31 and the second pulley group 32 is less than its own gravity. The first movable bracket 21 moves downward, and the traction force applied by the second traction rope 52 to the second movable bracket 22 through the third pulley group 33 gradually decreases. The second section length is shortened relative to the first section length, and the first section length is increased relative to the second section length. As the first movable bracket 21 moves downward synchronously, the support arm 40 is driven to move downward to the specified position, thereby facilitating the removal of the equipment from the support arm 40 to complete subsequent related machine moving operations.

[0079] Example 4

[0080] Embodiment 4 of the present application provides an adjustment member based on Embodiment 3 to adjust the support arm to a suitable angle, thereby ensuring the safety of the device when placed on the support arm.

[0081] In a preferred embodiment of the present application, Figures 1 to 6 As shown, the end of the fixed frame 10 close to the mobile bracket 20 is the top end, and the end away from the mobile bracket 20 is the bottom end; the support arm 40 includes a support surface; the support surface is configured to support an object; the support surface is inclined upward relative to the direction from the bottom end to the top end.

[0082] In a preferred embodiment of the present application, Figures 1 to 6As shown, the stacking device also includes an adjusting member 80; the support arm 40 also includes a connecting surface; the connecting surface is configured to connect to the movable bracket 20; the adjusting member 80 is disposed between the support arm 40 and the movable bracket 20, and is configured to adjust the distance between the connecting surface and the movable bracket 20 so that the supporting surface is inclined upward relative to the direction from the bottom end to the top end.

[0083] In a specific embodiment of the present application, Figures 4 to 6 As shown, the supporting surface and the connecting surface are perpendicular, and the adjusting member 80 adopts an adjusting bolt; the stacking device also includes a rotating rod 90; the second movable bracket 22 includes a supporting cross bar (not shown in the figure) arranged near the bottom end; the rotating rod 90 is arranged on the second movable bracket 22 and connected to the support arm 40, and is configured to enable the support arm 40 to rotate based on it; the adjusting bolt is arranged on the supporting cross bar, and is configured to abut against the bottom end of the support arm 40 after being screwed out to a preset length, so that the support arm 40 can be rotated obliquely upward by a certain angle through the rotating rod 90.

[0084] Different devices have different weights, and the center of gravity of each device is also distributed differently. Figures 5 and 6 As shown in the change, device A is placed flat on the support surface of the support arm 40. If the center of gravity of the device A is relative to its support point, the center of gravity is biased toward one side of the device A in the direction away from the support point, which indicates that the weight of the device A is mainly concentrated on the side away from the support point, and the problem of front rollover and falling may occur. In order to solve this problem, an adjustment bolt is provided. When adjustment is required, it is only necessary to screw the adjustment bolt in the direction toward the support arm 40. When it reaches a certain length, it will abut against the bottom end of the support arm 40, so that the support arm 40 tilts diagonally upward and slightly warps up. Then, when the device A is placed on the support arm 40, there will be no problem of forward tilting and side rollover, which ensures the safety of the device disassembly and assembly process.

[0085] In a preferred embodiment of the present application, the support arm 40 is made of high-strength manganese steel and has a high load capacity to meet the load-bearing requirements for working in a smaller space.

[0086] Example 5

[0087] Embodiment 5 of the present application provides a transportation system based on Embodiments 1 to 4.

[0088] A transportation system includes the stacking device provided in Examples 1 to 4.

[0089] In some embodiments of the present application, the transport system is used to disassemble and assemble a photolithography machine. First, before starting to disassemble, ensure that there are no loose parts or potential hazards in the photolithography machine, and determine the height and weight of the photolithography machine; then, adjust the stacking device so that the support arm rises to the specified position; then, use the stacking device to approach the upper structure of the photolithography machine, and the operator removes the photolithography machine and places it on the support arm; then, adjust the stacking device so that the support arm drops to a safe position; finally, the staff removes the photolithography machine from the support arm, transports it away using a transport vehicle, cleans and inspects it, and then performs subsequent reassembly work.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0091] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0092] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A stacking device, characterized in that: include: Fixed frame; A movable bracket, disposed on the fixed bracket and configured to be movable relative to the fixed bracket along its height direction; A support arm, provided on the mobile bracket; A lifting assembly connected to the movable bracket and configured to drive the movable bracket to move along the fixed bracket so that the support arm moves to a specified position; Wherein, the mobile bracket includes a first mobile bracket and a second mobile bracket; the first mobile bracket is arranged on the fixed bracket; The second movable bracket is connected to the first movable bracket and the support arm respectively, and is configured to move synchronously with the first movable bracket.

2. The stacking device according to claim 1, characterized in that: There is a preset angle between the length direction of the first movable bracket and the length direction of the second movable bracket.

3. The stacking device according to claim 1, characterized in that: The lifting assembly includes a plurality of pulley blocks and a plurality of traction ropes; The pulley block, a part of which is arranged on the fixed frame, and another part of which is arranged on the movable frame; The traction rope is passed through the pulley block and is configured to pull the pulley block to rotate so as to drive the movable bracket to move along the height direction of the fixed bracket.

4. The stacking device according to claim 3, characterized in that: The plurality of pulley groups include a first pulley group, a second pulley group and a third pulley group; The first pulley group is arranged at one end of the first movable bracket close to the fixed bracket; The second pulley block is disposed on the fixing frame and is located above the first pulley block along the height direction of the fixing frame; The third pulley block is arranged at an end of the first movable bracket away from the fixed bracket.

5. The stacking device according to claim 4, characterized in that: The traction rope comprises a first traction rope and a second traction rope; The first traction rope is passed through the first pulley group and the second pulley group, and is configured to pull the first pulley group and the second pulley group to rotate, so as to drive the first movable bracket to move along the height direction of the fixed bracket; The second traction rope is passed through the third pulley block and is configured to pull the third pulley block to rotate, so as to drive the second movable bracket and the first movable bracket to move synchronously.

6. The stacking device according to claim 5, characterized in that: The stacking device also includes a hinge wheel and a driving device; The hinge wheel is connected to the first traction rope; The driving device is connected to the hinge wheel and is configured to drive the hinge wheel to rotate, so that the first traction rope is wrapped around or detached from the hinge wheel, driving the first mobile bracket to move along the height direction of the fixed bracket through the first pulley group and the second pulley group, and then driving the second mobile bracket to move synchronously with the first mobile bracket through the third pulley group, so that the support arm moves to the specified position.

7. The stacking device according to claim 1, characterized in that: The end of the fixed frame close to the movable bracket is the top end, and the end away from the movable bracket is the bottom end; The support arm includes a support surface; the support surface is configured to support an object; and the support surface is inclined upwardly relative to the direction from the bottom end to the top end.

8. The stacking device according to claim 7, characterized in that: The stacking device also includes an adjusting member; The support arm also includes a connection surface; the connection surface is configured to connect the mobile bracket; The adjusting member is disposed between the supporting arm and the movable bracket, and is configured to adjust the distance between the connecting surface and the movable bracket so that the supporting surface is inclined upwardly relative to the direction from the bottom end to the top end.

9. A transportation system, characterized in that: include: A stacking device as claimed in any one of claims 1 to 8.

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