Supporting device

Abstract

The utility model provides a supporting device which comprises a first supporting platform and a second supporting platform, the second supporting platform is arranged below the first supporting platform, the second supporting platform is provided with an unfolding position and a retracting position which are oppositely arranged, and when the second supporting platform is switched to the unfolding position, the second supporting platform is driven by the first supporting platform to rotate. The first supporting platform and the second supporting platform have the maximum supporting area in the vertical direction, and when the second supporting platform is switched to the retracting position, the first supporting platform and the second supporting platform have the minimum supporting area in the vertical direction; and the rotation stopping structure is arranged between the first supporting platform and the second supporting platform, and when the second supporting platform is located at the unfolding position and the retracting position, the rotation stopping structure can limit relative rotation of the first supporting platform and the second supporting platform. By means of the technical scheme, the problem that in the prior art, a supporting device is poor in structural stability in the carrying and using process can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of supporting devices, in particular to a supporting device. Background Art

[0002] At present, during the excavation operation of mine tunnels, the coal mining machine can support the roof and the two sides while excavating the tunnels. However, when opening a mobile substation chamber or water tank, the coal mining machine cannot support the two sides, so manual support is required. Faced with a tunnel more than three meters high, the operator needs to use a platform for manual support, that is, the personnel stand on a relatively stable platform to perform support operations.

[0003] The existing support device is equipped with multiple support platforms, which are hinged or detachably connected. When it is necessary to transport, the multiple support platforms can be disassembled into independent units, or folded and rotated to reduce the overall space occupied by the support device and facilitate the operator's transportation; when support work is required, the multiple support platforms can be unfolded or spliced ​​together to increase the support area of ​​the support platform. However, this structure will cause the overall structural performance of the support platform to decline during transportation or use, affecting the transportation of the support device, and even causing safety hazards when people stand on the support device to work. Utility Model Content

[0004] The utility model provides a supporting device to solve the problem that the supporting device in the prior art has poor structural stability during transportation and use.

[0005] The utility model provides a supporting device, the supporting device comprising: a first supporting platform; a second supporting platform, which is arranged below the first supporting platform, the second supporting platform having an unfolded position and a retracted position which are relatively arranged, the first supporting platform being connected to the second supporting platform via a rotating shaft, the rotating shaft being arranged vertically, the second supporting platform and the first supporting platform being able to rotate in a horizontal direction around the rotating shaft to switch between the unfolded position and the retracted position, when the second supporting platform is switched to the unfolded position, the first supporting platform and the second supporting platform having a maximum supporting area in the vertical direction, the maximum supporting area being larger than the supporting area of ​​the first supporting platform or the second supporting platform, when the second supporting platform is switched to the retracted position, the first supporting platform and the second supporting platform having a minimum supporting area in the vertical direction, the minimum supporting area being the supporting area of ​​the first supporting platform or the supporting area of ​​the second supporting platform; a rotation-stopping structure, which is arranged between the first supporting platform and the second supporting platform, when the second supporting platform is in the unfolded position and the retracted position, the rotation-stopping structure being able to limit the relative rotation of the first supporting platform and the second supporting platform.

[0006] Furthermore, the anti-rotation structure includes: an anti-rotation groove, which is arranged on the bottom surface of the first support platform; a mounting block and a sliding block, the mounting block is arranged on the side of the second support platform, the mounting block can move in the horizontal direction relative to the second support platform, the mounting block is provided with a mounting groove, the sliding block is arranged in the mounting groove, the sliding block can move in the vertical direction relative to the mounting groove, and the sliding block and the anti-rotation groove are arranged correspondingly; when the second support platform is in the retracted position, the sliding block is partially located in the anti-rotation groove, and the sliding block cooperates with the anti-rotation groove to limit the position; when the second support platform switches to the deployed position, the mounting block moves in the direction away from the second support platform, a guide structure is arranged in the anti-rotation groove, and the sliding block cooperates with the guide structure to move in the direction away from the first support platform so that the sliding block withdraws from the anti-rotation groove.

[0007] Furthermore, the anti-rotation groove has a guide side wall and a limit side wall which are arranged relatively along the moving direction of the mounting block, and the distance between the guide side wall and the top surface of the first supporting platform gradually increases from the direction away from the second supporting platform.

[0008] Furthermore, the anti-rotation structure also includes: a guide column, which is arranged in the installation groove, the guide column extends in the vertical direction, and the sliding block cooperates with the guide column for guiding; a first spring, which is sleeved on the guide column, one end of the first spring is connected to the sliding block, and the other end of the first spring is connected to the bottom of the installation groove, and the first spring is used to provide an elastic force to the sliding block toward the anti-rotation groove.

[0009] Furthermore, the anti-rotation structure also includes a driving assembly, which can drive the mounting block to move in a direction away from the second supporting platform.

[0010] Furthermore, the second support platform has a first through hole arranged along the moving direction of the mounting block, and the driving assembly includes: a through rod, the through rod is inserted into the first through hole, one end of the through rod is connected to the mounting block, and when the second support platform is in the retracted position, one end of the through rod away from the mounting block protrudes from the second support platform.

[0011] Furthermore, the driving assembly also includes a second spring, which is arranged in the first through hole and sleeved on the through rod. One end of the second spring is connected to the mounting block, and the other end of the second spring is fixedly connected to the inner wall of the first through hole, for providing an elastic force to the mounting block to move toward the second support platform.

[0012] Furthermore, a plug-in hole is provided on a side wall of one end of the first supporting platform away from the mounting block, and when the second supporting platform is in the unfolded position, the through rod is plugged into and matched with the plug-in hole.

[0013] Furthermore, the first support platform has a first side and a second side that are relatively arranged along the length direction, and the second support platform has a third side and a fourth side that are relatively arranged along the length direction. When the second support platform is in the retracted position, the first side and the second side are on the same side, a limiting block is provided on the first side, and a receiving groove is provided on the third side. The rotating shaft is sequentially passed through the bottom of the limiting block and the receiving groove. When the second support platform switches to the expanded position, the limiting block enters the receiving groove and cooperates with the receiving groove to limit the position.

[0014] Further, when the second supporting platform is switched to the unfolded position, the upper surfaces of the first supporting platform and the second supporting platform are flush.

[0015] Further, a first leg is provided on the bottom surface of the first support platform, and the first leg is provided on the second side; a second leg and a third leg are provided on the bottom surface of the second support platform, and the second leg is provided on the third side, and the third leg is provided on the fourth side; a height adjustment component is provided on the end of the first leg away from the first support platform, and / or a height adjustment component is provided on the end of the second leg away from the second support platform, so as to adjust the relative position of the first support platform and the second support platform in the vertical direction.

[0016] Furthermore, the first leg is hingedly connected to the first supporting platform, the second leg and the third leg are both hingedly connected to the second supporting platform, the first leg and the second leg have a supporting position and a carrying position, when the first leg and the second leg are in the supporting position, the first leg is vertically arranged to the first supporting platform, and the second leg is vertically arranged to the second supporting platform, when the first leg and the second leg are switched to the carrying position, the first leg is parallel to the first supporting platform, and the second leg is parallel to the second supporting platform, and the first leg and the second leg can rotate relative to each other so that the first leg and the second leg can switch to the carrying position.

[0017] Furthermore, a connecting rod is provided between the second leg and the third leg, one end of the connecting rod is hinged to the second leg, and the other end of the connecting rod is hinged to the third leg. When the second leg is switched to the carrying position, the second leg can drive the third leg to rotate synchronously through the connecting rod, and a walking wheel assembly is provided at one end of the third leg away from the second support platform.

[0018] Furthermore, a stop assembly is provided on the third leg, and the stop assembly includes: a fixed seat, which is provided on the third leg, and the fixed seat has a second through hole, and the extension direction of the second through hole is perpendicular to the extension direction of the third leg; a stop rod, which is movably provided in the second through hole, and the stop rod has a first position and a second position which are relatively set, and when the stop rod is switched to the first position, the stop rod can move in a direction close to the first leg and cooperate with the first leg limit, and when the stop rod is switched to the second position, the stop rod can move in a direction away from the first leg to avoid the first leg, and when the first leg and the second leg are switched to the carrying position, the stop rod switches to the first position to stop the first leg from rotating in a direction away from the second leg.

[0019] Furthermore, the stop assembly also includes a third spring, which is arranged in the second through hole and sleeved on the stop rod, one end of the third spring is connected to the stop rod, and the other end of the third spring is connected to the inner wall of the second through hole, and the third spring is used to provide an elastic force to the stop rod to switch to the first position.

[0020] By applying the technical solution of the utility model, the support device includes a first support platform, a second support platform and a support device. During the process of the operator performing the support work, when the width of the tunnel to be supported is wider and the personnel need a larger working space, the second support platform can be rotated around the rotation axis to switch the second support platform to the extended position, so that the operator can move on the support device; when the support device needs to be transported or the personnel need a smaller working space, the second support platform can be switched to the retracted position for easy transportation and use. By setting a stop structure, the rotation of the second support platform relative to the first support platform in the extended position and the retracted position can be limited. In this way, the reliability of the connection between the second support platform and the first support platform can be guaranteed during the transportation and use of the support device, and the second support platform can be prevented from moving during the transportation process, causing inconvenience in transportation. It can also prevent the second support platform and the first support platform from rotating relative to each other when the operator stands on the support device, thereby ensuring the overall structural stability of the support device and improving the safety of the support device during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0022] Figure 1 A schematic diagram showing the structure of the support device provided by the utility model when the second support platform is in a retracted position;

[0023] Figure 2A schematic diagram showing the structure of the support device provided by the utility model when the second support platform is in the unfolded position;

[0024] Figure 3 A schematic diagram of the structure of the second supporting platform provided by the utility model is shown;

[0025] Figure 4 A schematic diagram showing the structure of the cooperation between the second supporting platform and the first supporting platform provided by the utility model is shown;

[0026] Figure 5 The structure diagram of the installation block provided by the utility model is shown;

[0027] Figure 6 A bottom view of the first supporting platform provided by the utility model is shown;

[0028] Figure 7 A schematic diagram showing the structure of the support device provided by the utility model when the first leg is switched to a folded state;

[0029] Figure 8 The schematic diagram of the structure of the stopper assembly provided by the utility model is shown.

[0030] The above drawings include the following reference numerals:

[0031] 100, rotating shaft;

[0032] 10. First supporting platform; 11. Plug-in hole; 12. Limiting block;

[0033] 20. Second supporting platform; 21. Accommodating tank;

[0034] 31. anti-rotation groove; 311. guide side wall; 312. limit side wall; 32. mounting block; 321. mounting groove; 33. sliding block; 34. guide column; 35. first spring; 36. through rod; 37. second spring;

[0035] 40. first leg; 41. spacer block;

[0036] 50. Second leg;

[0037] 60. The third leg;

[0038] 70. Connecting rod;

[0039] 80. Stopper assembly; 81. Fixing seat; 82. Second through hole; 83. Stopper rod; 84. Third spring;

[0040] 91. Height adjustment assembly; 92. Travel wheel assembly. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0042] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a support device, which includes a first support platform 10, a second support platform 20 and a rotation-stopping structure. The second support platform 20 is arranged below the first support platform 10, and the second support platform 20 has an unfolded position and a retracted position arranged relatively. The first support platform 10 is connected to the second support platform 20 through a rotating shaft 100, and the rotating shaft 100 is arranged vertically. The second support platform 20 and the first support platform 10 can rotate in the horizontal direction around the rotating shaft 100 to switch between the unfolded position and the retracted position. When the second support platform 20 switches to the unfolded position, the first support platform 10 and the second support platform 20 have a maximum support area in the vertical direction, and the maximum support area is greater than the support area of ​​the first support platform 10 or the second support platform 20. When the second support platform 20 switches to the retracted position, the first support platform 10 and the second support platform 20 have a minimum support area in the vertical direction, and the minimum support area is the support area of ​​the first support platform 10 or the support area of ​​the second support platform 20. The anti-rotation structure is disposed between the first support platform 10 and the second support platform 20 . When the second support platform 20 is in the deployed position and the retracted position, the anti-rotation structure can limit the relative rotation of the first support platform 10 and the second support platform 20 .

[0043] By applying the technical solution of the utility model, the support device includes a first support platform 10, a second support platform 20 and a support device. When the width of the tunnel to be supported is wide and the personnel need a larger working space, the second support platform 20 can be rotated around the rotation axis 100 to switch the second support platform 20 to the extended position, so that the operator can move on the support device; when the support device needs to be transported or the personnel need a smaller working space, the second support platform 20 can be switched to the retracted position for easy transportation and use. By setting a stop structure, the rotation of the second support platform 20 relative to the first support platform 10 in the extended position and the retracted position can be limited. In this way, the reliability of the connection between the second support platform 20 and the first support platform 10 can be guaranteed during the transportation and use of the support device, and the second support platform 20 can be prevented from moving during the transportation process, causing inconvenience in transportation. It can also prevent the second support platform 20 and the first support platform 10 from rotating relative to each other when the operator stands on the support device, thereby ensuring the overall structural stability of the support device and improving the safety of the support device during use.

[0044] Specifically in the present application, the maximum support area and the minimum support area refer to the projection area of ​​the first support platform 10 and the second support platform 20 along the vertical direction during the relative rotation of the first support platform 10 and the second support platform 20. In a specific embodiment of the present application, the support area of ​​the first support platform 10 is larger than the support area of ​​the second support platform 20, so as to facilitate the rotation of the second support platform 20. At this time, the maximum support area is the sum of the support areas of the first support platform 10 and the second support platform 20, and there is no overlap between the support surface of the first support platform 10 and the support surface of the second support platform 20 in the vertical direction; the minimum support area is when the second support platform 20 is in the retracted position, and in the vertical direction, the support surface of the second support platform 20 completely overlaps with the support surface of the first support platform 10.

[0045] Specifically, since the support device as a whole occupies a large space, it is not convenient for personnel to switch the position of the second support platform 20 relative to the first support platform by using other folding forms. By setting the first support platform 10 and the second support platform 20 to rotate in the horizontal direction, it can facilitate the operation of operators in the mine and improve construction efficiency.

[0046] Specifically in the present application, the first support platform 10 and the second support platform 20 can be configured in the form of support plates to facilitate the processing of the support device. Specifically, wooden boards or metal perforated plates can be selected to further reduce the overall weight of the support platform and facilitate transportation.

[0047] Reference Figures 3 to 6As shown, the anti-rotation structure includes an anti-rotation groove 31, a mounting block 32 and a sliding block 33. The anti-rotation groove 31 is arranged on the bottom surface of the first support platform 10, the mounting block 32 is arranged on the side of the second support platform 20, the mounting block 32 can move in the horizontal direction relative to the second support platform 20, the mounting block 32 is provided with a mounting groove 321, the sliding block 33 is arranged in the mounting groove 321, the sliding block 33 can move in the vertical direction relative to the mounting groove 321, and the sliding block 33 is arranged corresponding to the anti-rotation groove 31. When the second support platform 20 is in the retracted position, the sliding block 33 is partially located in the anti-rotation groove 31, and the sliding block 33 cooperates with the anti-rotation groove 31 to limit the position; when the second support platform 20 is switched to the unfolded position, the mounting block 32 moves in the direction away from the second support platform 20, the anti-rotation groove 31 is provided with a guide structure, and the sliding block 33 cooperates with the guide structure to move in the direction away from the first support platform 10, so that the sliding block 33 withdraws from the anti-rotation groove 31. Through the above-mentioned arrangement, when the second support platform 20 is in the retracted position, the sliding block 33 is located in the anti-rotation groove 31, thereby limiting the horizontal rotation of the second support platform 20 relative to the first support platform 10, thereby ensuring the overall stability of the support device when the second support platform 20 is in the retracted position; when the second support platform 20 needs to be rotated, the mounting block 32 can be moved away from the first support platform 10, so that the sliding block 33 can cooperate with the guide structure and enter the mounting groove 321, so that the second support platform 20 can be rotated relative to the first support platform 10 and switch to the deployed position.

[0048] Specifically, the anti-rotation groove 31 has a guide side wall 311 and a limit side wall 312 which are arranged relatively along the moving direction of the mounting block 32, and the distance between the guide side wall 311 and the top surface of the first support platform 10 gradually increases from the direction away from the second support platform 20. Through the above arrangement, the distance between the mounting block 32 and the guide side wall 311 will gradually decrease during the movement, so that the guide side wall 311 can squeeze the sliding block 33, so that the sliding block 33 gradually enters the mounting groove 321, until the sliding block 33 is completely moved out of the anti-rotation groove 31, and the second support platform 20 can rotate in the horizontal direction relative to the first support platform 10.

[0049] like Figure 5As shown, the anti-rotation structure also includes a guide column 34 and a first spring 35. The guide column 34 is arranged in the installation groove 321, and the guide column 34 extends in the vertical direction. The sliding block 33 is guided and matched with the guide column 34. The first spring 35 is sleeved on the guide column 34, one end of the first spring 35 is connected to the sliding block 33, and the other end of the first spring 35 is connected to the bottom of the installation groove 321. The first spring 35 is used to provide an elastic force toward the anti-rotation groove 31 to the sliding block 33. Through the above arrangement, the guide column 34 can provide guidance for the movement of the sliding block 33 and improve the stability of the movement of the sliding block 33. The first spring 35 can provide a certain support performance for the sliding block 33, so that the sliding block 33 can move in cooperation with the guide side wall 311, thereby ensuring the performance of the anti-rotation structure.

[0050] Specifically, a plurality of guide posts 34 and first springs 35 may be arranged at intervals along the extension direction of the mounting groove 321 to further improve the stability of the sliding block 33 moving in the mounting groove 321 . Specifically, the number of guide posts 34 and first springs 35 may be 4, 5 or 6.

[0051] Furthermore, the anti-rotation structure also includes a driving assembly, which can drive the mounting block 32 to move away from the second support platform 20. Through the above arrangement, the mounting block 32 can move under the drive of the driving assembly, so that the sliding block 33 can move out of the anti-rotation groove 31, which is convenient for personnel to operate.

[0052] Specifically, the second support platform 20 has a first through hole arranged along the moving direction of the mounting block 32, and the driving assembly includes a through rod 36, which is arranged in the first through hole, and one end of the through rod 36 is connected to the mounting block 32. When the second support platform 20 is in the retracted position, one end of the through rod 36 away from the mounting block 32 protrudes from the second support platform 20. Through the above arrangement, when the sliding block 33 needs to be moved out of the anti-rotation groove 31, the through rod 36 is pressed to move the through rod 36 along the first through hole, so as to drive the mounting block 32 to move. Specifically, a plurality of through rods 36 can be arranged at intervals along the extending direction of the mounting block 32 to improve the stability of the mounting block 32 during the movement.

[0053] Furthermore, the driving assembly further includes a second spring 37, which is disposed in the first through hole and sleeved on the through rod 36, one end of the second spring 37 is connected to the mounting block 32, and the other end of the second spring 37 is fixedly connected to the inner wall of the first through hole, and is used to provide an elastic force for the mounting block 32 to move toward the second supporting platform 20. Through the above arrangement, the second spring 37 can provide an elastic force for the through rod 36 to reset, and can also maintain the position of the through rod 36 in the first through hole, preventing the through rod 36 from moving in the first through hole due to problems such as unstable ground, thereby driving the movement of the mounting block 32 and ensuring the stability of the anti-rotation structure during use.

[0054] In another embodiment of the present application, a plug hole 11 is provided on the side wall of the end of the first support platform 10 away from the mounting block 32, and when the second support platform 20 is in the unfolded position, the through rod 36 is plugged into and matched with the plug hole 11. Through the above arrangement, when the second support platform 20 is switched to the unfolded position, the portion of the through rod 36 protruding from the second support platform 20 can enter the plug hole 11, thereby limiting the relative rotation of the second support platform 20 and the first support platform 10, ensuring the stability of the support device when the second support platform 20 is in the unfolded position, and improving the safety of the operator when standing on the support device.

[0055] Specifically, the first through hole has a first hole section, a second hole section and a third hole section which are connected in sequence, the first hole section is arranged toward the mounting block 32, the diameter of the first hole section is larger than the diameter of the second hole section, the diameter of the third hole section is larger than the diameter of the second hole section, and the second spring 37 is arranged in the first hole section; the through rod 36 has a main body section and a plug-in section which are connected in sequence, one end of the main body section away from the plug-in section is connected to the mounting block 32, part of the plug-in section protrudes from the first through hole, the plug-in section is used for plugging and cooperating with the plug-in hole 11, the diameter of the plug-in section is larger than the diameter of the through rod 36, and a step surface is formed between the third hole section and the second hole section, and the step surface can limit the displacement of the through rod 36 toward the mounting block 32.

[0056] Specifically, the first support platform 10 has a first side and a second side that are arranged oppositely along the length direction, and the second support platform 20 has a third side and a fourth side that are arranged oppositely along the length direction. When the second support platform 20 is in the retracted position, the first side and the second side are on the same side, the first side is provided with a limit block 12, and the third side is provided with a receiving groove 21. The rotating shaft 100 is sequentially passed through the bottom of the limit block 12 and the receiving groove 21. When the second support platform 20 is switched to the unfolded position, the limit block 12 enters the receiving groove 21 and cooperates with the receiving groove 21. Through the above arrangement, when the second support platform 20 is switched to the unfolded position, the receiving groove 21 can limit the rotation of the limit block 12, thereby limiting the relative rotation of the second support platform 20 and the first support platform 10, and further improving the stability of the support device when the second support platform 20 is in the unfolded position.

[0057] In the present application, when the second support platform 20 is switched to the unfolded position, the upper surfaces of the first support platform 10 and the second support platform 20 are flush. Through the above arrangement, the performance of the support device can be guaranteed and the movement of the operator on the support device can be facilitated.

[0058] Specifically, in the process of switching the second support platform 20 from the retracted position to the deployed position, first push the through rod 36 on the third side of the second support platform 20 to make the sliding block 33 exit the stop groove 31 and contact the limit of the second support platform 20 at the retracted position, then rotate the second support platform 20 around the rotating shaft 100 to make the limit block 12 correspond to the receiving groove 21, at this time pull the installation block 32 to drive the plug-in section of the through rod 36 to completely enter the first through hole, adjust the relative positions of the first support platform 10 and the second support platform 20 in the vertical direction, so that the limit block 12 can enter the receiving groove 21, at this time the second support platform 20 is in the deployed position, finally release the installation block 32, and the through rod 36 enters the plug-in hole 11 driven by the elastic force of the second spring 37 to realize the limit of the second support platform 20 in the deployed position.

[0059] In the present application, a first leg 40 is provided on the bottom surface of the first supporting platform 10, and the first leg 40 is provided on the second side. A second leg 50 and a third leg 60 are provided on the bottom surface of the second supporting platform 20, and the second leg 50 is provided on the third side, and the third leg 60 is provided on the fourth side. By providing the first leg 40, the second leg 50 and the third leg 60, support for the first supporting platform 10 and the second supporting platform 20 can be achieved.

[0060] In one embodiment of the present application, a height adjustment assembly 91 is provided at one end of the first leg 40 away from the first support platform 10. Through the above arrangement, the position of the first support platform 10 in the vertical direction can be adjusted to facilitate the leveling of the support device in the mine tunnel, and it is also convenient to adjust the relative position of the first support platform 10 and the second support platform 20 in the vertical direction so that the limit block 12 enters the receiving groove 21.

[0061] In another embodiment of the present application, a height adjustment assembly 91 is provided at one end of the second leg 50 away from the second supporting platform 20 to adjust the relative positions of the first supporting platform 10 and the second supporting platform 20 in the vertical direction.

[0062] In another embodiment of the present application, a height adjustment assembly 91 is provided at one end of the second leg 50 away from the second support platform 20 and one end of the first leg 40 away from the first support platform 10 to further facilitate height adjustment of the support device.

[0063] In the present application, the first leg 40 is hingedly connected to the first support platform 10, the second leg 50 and the third leg 60 are both hingedly connected to the second support platform 20, the first leg 40 and the second leg 50 have a supporting position and a carrying position, when the first leg 40 and the second leg 50 are in the supporting position, the first leg 40 and the first support platform 10 are vertically arranged, and the second leg 50 and the second support platform 20 are vertically arranged, when the first leg 40 and the second leg 50 are switched to the carrying position, the first leg 40 and the first support platform 10 are parallelly arranged, and the second leg 50 and the second support platform 20 are parallelly arranged, and the first leg 40 and the second leg 50 can rotate relative to each other so that the first leg 40 and the second leg 50 can switch to the carrying position. Through the above arrangement, when the first leg 40 and the second leg 50 are in the supporting position, they can support the first supporting platform 10 and the second supporting platform 20. When the first leg 40 and the second leg 50 are in the carrying position, they can reduce the overall space occupied by the supporting device and facilitate movement.

[0064] Specifically, a cushion block 41 is further disposed between the first supporting leg 40 and the first supporting platform 10 to compensate for the height difference between the first supporting platform 10 and the second supporting platform 20 .

[0065] In another specific embodiment of the present application, a connecting rod 70 is provided between the second leg 50 and the third leg 60, one end of the connecting rod 70 is hinged to the second leg 50, and the other end of the connecting rod 70 is hinged to the third leg 60. When the second leg 50 is switched to the transport position, the second leg 50 can drive the third leg 60 to rotate synchronously through the connecting rod 70, and the end of the third leg 60 away from the second support platform 20 is provided with a walking wheel assembly 92. Through the above arrangement, when the first leg 40 and the second leg 50 are switched to the transport position, the third leg 60 can be driven to rotate relative to the second support platform 20, referring to Figure 7 As shown, at this time, only the third leg 60 is placed on the ground to support the first support platform 10 and the second support platform 20. The first support platform 10 and the second support platform 20 will rotate relative to the third leg 60, changing from a horizontal setting to a vertical setting. The third leg 60 is provided with a walking wheel assembly 92, which can facilitate the transportation of the support device.

[0066] Further, a stopper assembly 80 is provided on the third leg 60, and the stopper assembly 80 includes a fixing seat 81 and a stopper rod 83. The fixing seat 81 is provided on the third leg 60, and the fixing seat 81 has a second through hole 82, and the extension direction of the second through hole 82 is perpendicular to the extension direction of the third leg 60. The stopper rod 83 is movably provided in the second through hole 82, and the stopper rod 83 has a first position and a second position that are relatively arranged. When the stopper rod 83 is switched to the first position, the stopper rod 83 can move in a direction close to the first leg 40 and cooperate with the first leg 40 in a limited manner. When the stopper rod 83 is switched to the second position, the stopper rod 83 can move in a direction away from the first leg 40 to avoid the first leg 40. When the first leg 40 and the second leg 50 are switched to the transport position, the stopper rod 83 is switched to the first position to stop the first leg 40 from rotating in a direction away from the second leg 50. Through the above arrangement, the stop rod 83 can stop the rotation of the first leg 40 to prevent the first leg 40 from rotating under the action of gravity, further improving the overall structural performance of the support device during the transportation process and facilitating the transportation of the support device.

[0067] like Figure 8 As shown, the stopper assembly 80 further includes a third spring 84, which is disposed in the second through hole 82 and sleeved on the stopper rod 83, one end of the third spring 84 is connected to the stopper rod 83, and the other end of the third spring 84 is connected to the inner wall of the second through hole 82, and the third spring 84 is used to provide an elastic force for the stopper rod 83 to switch to the first position. Through the above arrangement, the stability of the stopper rod 83 in the first position can be ensured, and the stopper rod 83 can be prevented from moving in the second through hole 82.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0071] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0072] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0073] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A supporting device, characterized in that: The supporting device comprises: A first supporting platform (10); a second support platform (20) arranged below the first support platform (10), the second support platform (20) having an unfolded position and a retracted position arranged relatively to each other, the first support platform (10) being connected to the second support platform (20) via a rotating shaft (100), the rotating shaft (100) being arranged vertically, the second support platform (20) and the first support platform (10) being able to rotate in a horizontal direction around the rotating shaft (100) to switch between the unfolded position and the retracted position, when the second support platform (20) is switched to the unfolded position, the first support platform (10) and the second support platform (20) having a maximum support area in a vertical direction, the maximum support area being greater than a support area of ​​the first support platform (10) or the second support platform (20), when the second support platform (20) is switched to the retracted position, the first support platform (10) and the second support platform (20) having a minimum support area in a vertical direction, the minimum support area being the support area of ​​the first support platform (10) or the support area of ​​the second support platform (20); A rotation-stop structure is arranged between the first support platform (10) and the second support platform (20), and when the second support platform (20) is in the deployed position and the retracted position, the rotation-stop structure can limit the relative rotation of the first support platform (10) and the second support platform (20).

2. The support device according to claim 1, characterized in that: The anti-rotation structure comprises: A rotation-stop groove (31) is arranged on the bottom surface of the first supporting platform (10); A mounting block (32) and a sliding block (33), wherein the mounting block (32) is arranged on a side of the second supporting platform (20), the mounting block (32) can move in a horizontal direction relative to the second supporting platform (20), the mounting block (32) is provided with a mounting groove (321), the sliding block (33) is arranged in the mounting groove (321), the sliding block (33) can move in a vertical direction relative to the mounting groove (321), and the sliding block (33) is arranged corresponding to the anti-rotation groove (31); When the second support platform (20) is in the retracted position, the sliding block (33) is partially located in the anti-rotation groove (31), and the sliding block (33) cooperates with the anti-rotation groove (31) to limit the position; when the second support platform (20) is switched to the deployed position, the mounting block (32) moves in the direction away from the second support platform (20), and a guide structure is provided in the anti-rotation groove (31), and the sliding block (33) cooperates with the guide structure to move in the direction away from the first support platform (10) so that the sliding block (33) withdraws from the anti-rotation groove (31).

3. The supporting device according to claim 2, characterized in that: The anti-rotation groove (31) comprises a guide side wall (311) and a limiting side wall (312) which are arranged relatively to each other along the moving direction of the mounting block (32), and the distance between the guide side wall (311) and the top surface of the first supporting platform (10) gradually increases from a direction away from the second supporting platform (20).

4. The supporting device according to claim 2, characterized in that: The anti-rotation structure also includes: A guide column (34) is arranged in the installation groove (321), the guide column (34) extends in a vertical direction, and the sliding block (33) is in guiding cooperation with the guide column (34); A first spring (35) is sleeved on the guide column (34), one end of the first spring (35) is connected to the sliding block (33), and the other end of the first spring (35) is connected to the bottom of the mounting groove (321), and the first spring (35) is used to provide an elastic force to the sliding block (33) toward the anti-rotation groove (31).

5. The supporting device according to claim 2, characterized in that: The anti-rotation structure also includes a driving component, which is capable of driving the mounting block (32) to move in a direction away from the second supporting platform (20).

6. The supporting device according to claim 5, characterized in that: The second supporting platform (20) has a first through hole arranged along the moving direction of the mounting block (32), and the driving assembly comprises: A through rod (36), wherein the through rod (36) is inserted into the first through hole, one end of the through rod (36) is connected to the mounting block (32), and when the second support platform (20) is in the retracted position, one end of the through rod (36) away from the mounting block (32) protrudes from the second support platform (20).

7. The supporting device according to claim 6, characterized in that: The driving assembly also includes a second spring (37), which is arranged in the first through hole and sleeved on the penetration rod (36), one end of the second spring (37) is connected to the mounting block (32), and the other end of the second spring (37) is fixedly connected to the inner wall of the first through hole, so as to provide an elastic force for the mounting block (32) to move toward the second supporting platform (20).

8. The supporting device according to claim 6, characterized in that: A plug hole (11) is provided on the side wall of one end of the first supporting platform (10) away from the mounting block (32); when the second supporting platform (20) is in the unfolded position, the penetration rod (36) is plugged into and matched with the plug hole (11).

9. The supporting device according to claim 1, characterized in that: The first support platform (10) has a first side edge and a second side edge that are arranged oppositely along the length direction, and the second support platform (20) has a third side edge and a fourth side edge that are arranged oppositely along the length direction. When the second support platform (20) is in the retracted position, the first side edge and the second side edge are on the same side. The first side edge is provided with a limit block (12), and the third side edge is provided with a receiving groove (21). The rotating shaft (100) is sequentially passed through the bottom of the limit block (12) and the receiving groove (21). When the second support platform (20) is switched to the unfolded position, the limit block (12) enters the receiving groove (21) and cooperates with the receiving groove (21) in a limiting manner.

10. The supporting device according to claim 9, characterized in that: When the second supporting platform (20) is switched to the unfolded position, the upper surfaces of the first supporting platform (10) and the second supporting platform (20) are flush.

11. The support device according to claim 10, characterized in that: The bottom surface of the first supporting platform (10) is provided with a first leg (40), and the first leg (40) is arranged on the second side; the bottom surface of the second supporting platform (20) is provided with a second leg (50) and a third leg (60), and the second leg (50) is arranged on the third side, and the third leg (60) is arranged on the fourth side; a height adjustment component (91) is provided at one end of the first leg (40) away from the first supporting platform (10), and / or a height adjustment component (91) is provided at one end of the second leg (50) away from the second supporting platform (20), so as to adjust the relative position of the first supporting platform (10) and the second supporting platform (20) in the vertical direction.

12. The supporting device according to claim 11, characterized in that: The first leg (40) is hingedly connected to the first supporting platform (10), and the second leg (50) and the third leg (60) are both hingedly connected to the second supporting platform (20). The first leg (40) and the second leg (50) have a supporting position and a carrying position. When the first leg (40) and the second leg (50) are located at the supporting position, the first leg (40) and the first supporting platform (10) are vertically arranged, and the second leg (50) and the second supporting platform (20) are vertically arranged. When the first leg (40) and the second leg (50) are switched to the carrying position, the first leg (40) and the first supporting platform (10) are parallelly arranged, and the second leg (50) and the second supporting platform (20) are parallelly arranged. The first leg (40) and the second leg (50) can rotate relative to each other so that the first leg (40) and the second leg (50) are switched to the carrying position.

13. The supporting device according to claim 12, characterized in that: A connecting rod (70) is provided between the second leg (50) and the third leg (60), one end of the connecting rod (70) is hinged to the second leg (50), and the other end of the connecting rod (70) is hinged to the third leg (60). When the second leg (50) is switched to the transport position, the second leg (50) can drive the third leg (60) to rotate synchronously through the connecting rod (70), and a walking wheel assembly (92) is provided at one end of the third leg (60) away from the second support platform (20).

14. The supporting device according to claim 13, characterized in that: The third leg (60) is provided with a stopper assembly (80), and the stopper assembly (80) comprises: A fixing seat (81) is arranged on the third supporting leg (60), the fixing seat (81) having a second through hole (82), and the extension direction of the second through hole (82) is perpendicular to the extension direction of the third supporting leg (60); A stop rod (83) is movably disposed in the second through hole (82), and the stop rod (83) has a first position and a second position that are relatively disposed. When the stop rod (83) is switched to the first position, the stop rod (83) can move in a direction close to the first leg (40) and cooperate with the first leg (40) to limit the position. When the stop rod (83) is switched to the second position, the stop rod (83) can move in a direction away from the first leg (40) to avoid the first leg (40). When the first leg (40) and the second leg (50) are switched to the transport position, the stop rod (83) is switched to the first position to stop the first leg (40) from rotating in a direction away from the second leg (50).

15. The supporting device according to claim 14, characterized in that: The stop assembly (80) further includes a third spring (84), which is disposed in the second through hole (82) and sleeved on the stop rod (83), one end of the third spring (84) is connected to the stop rod (83), and the other end of the third spring (84) is connected to the inner wall of the second through hole (82), and the third spring (84) is used to provide an elastic force to the stop rod (83) to switch to the first position.

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