Bearing device

Abstract

The embodiment of the utility model provides a bearing device. The folding device comprises a first support, a second support, at least three folding mechanisms and a plurality of flexible connecting pieces. The folding mechanisms are connected with the first support and the second support respectively and can be switched between a folded state and an unfolded state, and the two ends of each flexible connecting piece are connected with the first support and the second support respectively; under the condition that all the folding mechanisms are in the unfolded state, the first supports and the second supports are distributed at intervals, and the flexible connecting pieces are tightened to form a multi-layer bearing area; and under the condition that each folding mechanism is in the folding state, the first bracket and the second bracket are close to each other.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing device design, and in particular to a bearing device. BACKGROUND

[0002] In a production unit, the order quantity may be large for a period of time and small for another period of time. In the case of a large order quantity, a large number of bearing devices are needed to store the products. In the case of a small order quantity, part of the bearing devices are idle. The idle bearing devices need to occupy storage space. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a bearing device to solve the problem of reducing the storage space occupied by idle bearing devices.

[0004] To solve the above technical problem, the present application is implemented as follows:

[0005] The bearing device provided by the present application comprises a first support, a second support, at least three folding mechanisms and a plurality of flexible connecting pieces. Each folding mechanism is connected to the first support and the second support, each folding mechanism can be switched between a folded state and an unfolded state, and both ends of each flexible connecting piece are connected to the first support and the second support. In the case that each folding mechanism is in the unfolded state, the first support and the second support are distributed at intervals, and the flexible connecting piece is taut to form a plurality of layers of bearing areas. In the case that each folding mechanism is in the folded state, the first support and the second support are close to each other.

[0006] Optionally, each folding mechanism comprises a first connecting rod and a second connecting rod connected by rotation. The first connecting rod is connected to the first support by rotation, and the second connecting rod is connected to the second support by rotation.

[0007] Optionally, each folding mechanism further comprises a rotation limiter. In the case that the folding mechanism is in the unfolded state, the rotation limiter is used to limit the rotation of the first connecting rod relative to the second connecting rod.

[0008] Optionally, the rotation limiter comprises a pin, the first connecting rod is provided with a first insertion hole, the second connecting rod is provided with a second insertion hole, and the pin is used to be inserted into the first insertion hole and the second insertion hole respectively in the case that the folding mechanism is in the unfolded state.

[0009] Optionally, the pin is inserted into the first insertion hole. The rotation limiter further comprises an elastic element, and the elastic element is used to apply an elastic force to the pin towards the second insertion hole.

[0010] Optionally, the plug-in pin comprises a rotating operation part and an abutting protrusion; a hole wall of the first insertion hole is provided with a spiral abutting part, and the abutting protrusion is in abutment with the spiral abutting part under the action of the elastic force applied by the elastic element; the rotating operation part can rotate under the driving condition to drive the spiral abutting part to drive the plug-in pin to move along the depth direction of the first insertion hole through the abutting protrusion.

[0011] Optionally, each of the folding mechanisms further comprises a first rotating shaft, and the first connecting rod and the second connecting rod are rotationally connected through the first rotating shaft.

[0012] Optionally, two of the at least three folding mechanisms are a first folding mechanism and a second folding mechanism respectively, the first folding mechanism is located above the second folding mechanism, the first rotating shaft of the first folding mechanism is spaced apart from the first rotating shaft of the second folding mechanism by a first distance when each of the folding mechanisms is in the unfolded state, the first rotating shaft of the first folding mechanism is spaced apart from the first rotating shaft of the second folding mechanism by a second distance when each of the folding mechanisms is in the folded state, and the second distance is less than the first distance.

[0013] Optionally, a side of the first support facing the second support is provided with a plurality of first supports, the number of the first supports is equal to the number of the folding mechanisms, the first connecting rod of each of the folding mechanisms is rotationally connected with the first support in a one-to-one correspondence, the first support is further provided with a plurality of first recesses, the number of the first recesses is equal to the number of the folding mechanisms, an end of each of the first connecting rods away from the first rotating shaft is provided with a first protruding part, and the first protruding part is embedded in the first recess in a one-to-one correspondence when each of the folding mechanisms is in the unfolded state.

[0014] Optionally, at least one flexible connecting piece is arranged below the bearing area and on both sides of the bearing area along the front-rear direction of the bearing device, the front-rear direction of the bearing device is perpendicular to the height direction of the bearing device, and the front-rear direction of the bearing device is perpendicular to the direction in which the first support faces the second support.

[0015] The above at least one technical solution adopted by the embodiments of the present application can achieve the following beneficial effects:

[0016] In the embodiments of the present application, when it is necessary to place materials by using the bearing device, each of the folding mechanisms can be in the unfolded state. Thus, when each of the folding mechanisms is in the unfolded state, the flexible connecting pieces are taut to form multiple bearing areas. Then, the materials can be arranged in the bearing areas.

[0017] In addition, for unused load-bearing devices, each folding mechanism can be folded so that the first and second supports can be brought closer together, thereby reducing the volume of the load-bearing device and thus reducing its storage space.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of a carrying device and material provided in an embodiment of this application;

[0021] Figure 2 This is a schematic diagram of a support device provided in an embodiment of this application, showing the support device in an unfolded state;

[0022] Figure 3 This is a schematic diagram of a support device provided in an embodiment of this application, showing the support device in a semi-folded state;

[0023] Figure 4 This is a schematic diagram of a support device provided in an embodiment of this application, showing the support device in a folded state;

[0024] Figure 5 for Figure 4 A schematic diagram of the supporting device from another angle is shown in the image;

[0025] Figure 6 for Figure 2 The diagram shows a partial view of the bearing device located in the area where the rotation limiter is located;

[0026] Figure 7 for Figure 2 The image shows a partial cross-sectional view of the bearing device located in the area where the rotation limiter is situated;

[0027] Figure 8 A schematic diagram of a spiral abutment portion and an abutment protrusion provided for an embodiment of this application;

[0028] Figure 9 for Figure 2Figure 6 is a partial view of the bearing device shown in Figure 5, showing a first link of the bearing device.

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 100 - bearing device

[0031] 110 - first support

[0032] 120 - second support

[0033] 130 - folding mechanism; 130a - first folding mechanism; 130b - second folding mechanism; 131 - first link; 1311 - first insertion hole; 1312 - screw abutting portion; 1313 - first protruding portion; 132 - second link; 1321 - second insertion hole; 133 - rotation limiter; 1331 - bolt; 13311 - rotation operating portion; 13312 - abutting protrusion; 1332 - elastic element; 134 - first rotation shaft; 135 - second rotation shaft

[0034] 140 - flexible connecting member

[0035] 150 - bearing area

[0036] 160 - caster

[0037] 200 - material DETAILED DESCRIPTION

[0038] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below with reference to the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood in a broad sense, for example, can be fixed connection, can be detachable connection, or integral connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0040] In addition, although the terms used in the present application are selected from the commonly known and used terms, some terms mentioned in the specification of the present application can be selected by the applicant according to his or her judgment, and the detailed meanings of which are described in the relevant parts of the description herein.

[0041] Furthermore, the present application is to be interpreted not only by the actual terms used but also by the meanings of each term.

[0042] The technical solutions provided by the embodiments of the present application are described in detail below with reference to the drawings.

[0043] The present application provides a bearing device. Referring to Figures 1 to 9 The bearing device 100 provided by the embodiments of the present application comprises a first support 110, a second support 120, at least three folding mechanisms 130 and a plurality of flexible connecting members 140. Exemplarily, the first support 110 can be a frame structure welded by pipes. The second support 120 can be a frame structure welded by pipes. Exemplarily, the flexible connecting member 140 can be a flexible rope, for example, the flexible connecting member 140 is a flexible steel wire rope. It should be noted that the flexible connecting member 140 only needs to be capable of flexible deformation, and the material of the flexible connecting member 140 is not limited by the embodiments of the present application, so the material of the flexible connecting member 140 is not listed here.

[0044] Each folding mechanism 130 is connected with the first support 110 and the second support 120 respectively. Each folding mechanism 130 is capable of switching between a folded state and an unfolded state. Exemplarily, the folding mechanism 130 has two connecting portions, one of which is connected with the first support 110 and the other of which is connected with the second support 120. Thus, when each folding mechanism 130 is in the folded state, the first support 110 and the second support 120 are close to each other, so that the bearing device 100 is in the folded state to reduce the volume of the bearing device 100.

[0045] Further, in the embodiments of the present application, both ends of each flexible connecting member 140 are connected with the first support 110 and the second support 120 respectively. When each folding mechanism 130 is in the unfolded state, the first support 110 and the second support 120 are distributed at intervals, and the flexible connecting member 140 is taut to form a plurality of bearing areas 150. In combination with Figure 1 It can be known that the bearing area 150 is used for bearing the material 200. Referring to Figures 3 to 5 When each folding mechanism 130 is in the folded state, the first support 110 and the second support 120 are close to each other.

[0046] In this way, in the embodiments of the present application, when it is needed to place the material 200 by using the bearing device 100, each folding mechanism 130 can be in the unfolded state. Thus, when each folding mechanism 130 is in the unfolded state, the flexible connecting member 140 is taut to form a plurality of bearing areas 150. Further, the material 200 can be arranged in the bearing area 150.

[0047] In addition, for the idle carrying device 100, each folding mechanism 130 can be in the folded state, so that the first support 110 and the second support 120 are close to each other, so as to reduce the volume of the carrying device 100, thereby achieving the effect of reducing the storage space of the carrying device 100.

[0048] With reference to Figure 2 and Figure 3 In some embodiments, each folding mechanism 130 includes a first connecting rod 131 and a second connecting rod 132 rotatably connected. The first connecting rod 131 is rotatably connected with the first support 110, and the second connecting rod 132 is rotatably connected with the second support 120. In this way, by rotatably connecting the first connecting rod 131 with the first support 110, rotatably connecting the first connecting rod 131 with the second connecting rod 132, and rotatably connecting the second connecting rod 132 with the second support 120, the first support 110 and the second support 120 can be as close as possible when each folding mechanism 130 is in the folded state, so as to better reduce the volume of the carrying device 100.

[0049] With reference to Figure 3 In some embodiments, each folding mechanism 130 further includes a rotation limiter 133. When the folding mechanism 130 is in the unfolded state, the rotation limiter 133 is used to limit the rotation of the first connecting rod 131 relative to the second connecting rod 132. In this way, the folding mechanism 130 can be kept in the unfolded state by using the rotation limiter 133, so as to avoid the folding mechanism 130 switching to the folded state due to an accident.

[0050] With reference to Figure 2 , Figure 6 and Figure 7 In some embodiments, the rotation limiter 133 includes a pin 1331. The first connecting rod 131 is provided with a first insertion hole 1311, and the second connecting rod 132 is provided with a second insertion hole 1321. The pin 1331 is used to be inserted into the first insertion hole 1311 and the second insertion hole 1321, respectively, when the folding mechanism 130 is in the unfolded state. In this way, the rotation of the first connecting rod 131 relative to the second connecting rod 132 can be limited by using the pin 1331 inserted into the first insertion hole 1311 and the second insertion hole 1321.

[0051] With reference to Figure 7In some embodiments, the pin 1331 is inserted into the first insertion hole 1311. The rotation limiter 133 further comprises an elastic element 1332, which is configured to apply an elastic force to the pin 1331 towards the second insertion hole 1321. In this way, the pin 1331 can be kept inserted into the first insertion hole 1311 and the second insertion hole 1321 without applying an external force to the rotation limiter 133, so as to avoid the folding mechanism 130 switching to the folded state due to an accident.

[0052] In addition, in the case where it is required to switch the folding mechanism 130 to the folded state, an external pulling force can be applied to the pin 1331, so that the end of the pin 1331 is pulled out of the second insertion hole 1321, and the folding mechanism 130 can be switched to the folded state by relatively rotating the first link 131 and the second link 132.

[0053] Reference is made to Figure 7 and Figure 8 In some embodiments, the pin 1331 comprises a rotating operation portion 13311 and an abutting protrusion 13312. The hole wall of the first insertion hole 1311 is provided with a spiral abutting portion 1312, and the abutting protrusion 13312 abuts against the spiral abutting portion 1312 under the action of the elastic force applied by the elastic element 1332. The rotating operation portion 13311 can be rotated to drive the pin 1331 to move along the depth direction of the first insertion hole 1311 via the abutting protrusion 13312 and the spiral abutting portion 1312.

[0054] Reference is made to Figure 8 When the abutting protrusion 13312 rotates around the central axis of the spiral abutting portion 1312 from one end to the other end, the abutting protrusion 13312 will move downward. In this way, in combination with Figure 7 the abutting protrusion 13312 will drive the pin 1331 to move downward, so that the end of the pin 1331 towards the second link 132 is pulled out of the second insertion hole 1321. Thus, the rotation limiter 133 can be removed from the rotation restriction on the first link 131 and the second link 132, and the folding mechanism 130 can be switched to the folded state by relatively rotating the first link 131 and the second link 132.

[0055] In addition, it can be understood that when the abutting protrusion 13312 rotates reversely around the central axis of the spiral abutting portion 1312, the abutting protrusion 13312 will move upward. In this way, the end of the pin 1331 towards the second link 132 will move towards the second link 132. In the case where the first insertion hole 1311 and the second insertion hole 1321 are opposite to each other, the pin 1331 will be inserted into the second insertion hole 1321. Thus, the pin 1331 can be used to limit the relative rotation of the first link 131 and the second link 132.

[0056] With reference to Figures 2 to 7 In some embodiments, each folding mechanism 130 further comprises a first rotation shaft 134. The first connecting rod 131 and the second connecting rod 132 are rotationally connected through the first rotation shaft 134. Exemplarily, in the case that the rotation limiter 133 comprises the pin 1331, the rotation limiter 133 is spaced apart from the first rotation shaft 134. In this way, the rotation of the first connecting rod 131 relative to the second connecting rod 132 around the first rotation shaft 134 can be limited by the pin 1331.

[0057] With reference to Figures 2 to 5 In some embodiments, two of the at least three folding mechanisms 130 are respectively a first folding mechanism 130a and a second folding mechanism 130b, and the first folding mechanism 130a is located above the second folding mechanism 130b. Exemplarily, the number of the folding mechanisms 130 is 4. For the convenience of subsequent description, two of the four folding mechanisms 130 are respectively referred to as the first folding mechanism 130a and the second folding mechanism 130b, and the first folding mechanism 130a is located above the second folding mechanism 130b.

[0058] It should be noted that it can be understood that, since three points can determine a plane, in the case that the number of the folding mechanisms 130 is 3 and the three folding mechanisms 130 are all in the unfolded state, the second support 120 can be kept in a specific posture relative to the first support 110 and is not easy to shake relative to the first support 110.

[0059] Of course, it can be understood that, the more the number of the folding mechanisms 130, the better the folding mechanisms 130 can prevent the second support 120 from shaking relative to the first support 110 in the case that the folding mechanisms 130 are all in the unfolded state. In addition, the number of the folding mechanisms 130 should not be too large, and too many folding mechanisms 130 can affect the folding efficiency. Since the number of the folding mechanisms 130 can be flexibly set according to actual conditions by those skilled in the art, the number of the folding mechanisms 130 is not limited in the embodiments of the present application.

[0060] Further, in the embodiments of the present application, in the case that the folding mechanisms 130 are all in the unfolded state, the first rotation shaft 134 of the first folding mechanism 130a is spaced apart from the first rotation shaft 134 of the second folding mechanism 130b by a first distance. In the case that the folding mechanisms 130 are all in the folded state, the first rotation shaft 134 of the first folding mechanism 130a is spaced apart from the first rotation shaft 134 of the second folding mechanism 130b by a second distance; the second distance is less than the first distance.

[0061] In this way, the first folding mechanism 130a located above can be folded downward, and the second folding mechanism 130b located below can be folded upward, so that the compactness of the carrying device 100 in the folded state can be further improved.

[0062] With reference to Figure 3 and Figure 9 In some embodiments, the side of the first support 110 facing the second support 120 is provided with a plurality of first supports 111. The number of first supports 111 is equal to the number of folding mechanisms 130, and each first link 131 of each folding mechanism 130 is rotationally connected to a first support 111 in a one-to-one correspondence.

[0063] The first support 110 is also provided with a plurality of first recesses 112. The number of first recesses 112 is equal to the number of folding mechanisms 130, and each first link 131 is provided with a first protruding portion 1313 at an end thereof away from the first rotation shaft 134. When each folding mechanism 130 is in the unfolded state, the first protruding portion 1313 is embedded in a first recess 112 in a one-to-one correspondence. In this way, the first link 131 can be prevented from shaking relative to the first support 110 by embedding the first protruding portion 1313 in the first recess 112 in a one-to-one correspondence. Thus, the stability of the carrying device 100 in the unfolded state can be improved.

[0064] With reference to Figure 3 and Figure 9 In some embodiments, the first support 110 is rotationally connected to the first support 111 via a second rotation shaft 135 in a one-to-one correspondence.

[0065] Similarly, in some embodiments, the side of the second support 120 facing the first support 110 is provided with a plurality of second supports. The number of second supports is equal to the number of folding mechanisms 130, and each second link 132 of each folding mechanism 130 is rotationally connected to a second support in a one-to-one correspondence.

[0066] The second support 120 is also provided with a plurality of second recesses. The number of second recesses is equal to the number of folding mechanisms 130, and each second link 132 is provided with a second protruding portion at an end thereof away from the first rotation shaft 134. When each folding mechanism 130 is in the unfolded state, the second protruding portion is embedded in a second recess in a one-to-one correspondence. In this way, the second link 132 can be prevented from shaking relative to the second support 120 by embedding the second protruding portion in the second recess in a one-to-one correspondence. Thus, the stability of the carrying device 100 in the unfolded state can be improved.

[0067] In addition, the second support 120 is rotationally connected to the second support via a third rotation shaft in a one-to-one correspondence.

[0068] In some embodiments, the number of folding mechanisms 130 is four. Two of the folding mechanisms 130 are the first folding mechanism 130a and the second folding mechanism 130b as described above, and the other two folding mechanisms 130 are a third folding mechanism and a fourth folding mechanism. The third folding mechanism is located above the fourth folding mechanism. The third folding mechanism can be arranged in the same way as the first folding mechanism 130a, and the fourth folding mechanism can be arranged in the same way as the second folding mechanism 130b. Therefore, the specific structure of the third folding mechanism and the fourth folding mechanism will not be described here.

[0069] It should be noted that although the above embodiments mainly introduce the scheme of using the latch 1331 to limit the rotation of the first connecting rod 131 relative to the second connecting rod 132, it can be understood that in other embodiments, other schemes can also be selected to limit the rotation of the first connecting rod 131 relative to the second connecting rod 132. For example, in the case where the folding mechanism 130 is in the unfolded state, a rope can be used to wrap around the first connecting rod 131 and the second connecting rod 132 to prevent the first connecting rod 131 from rotating relative to the second connecting rod 132. The present application does not limit the mechanism for limiting the rotation of the first connecting rod 131 relative to the second connecting rod 132.

[0070] Reference Figure 2 In some embodiments, at least one flexible connecting member 140 is arranged below the carrying area 150 and on both sides of the carrying area 150 along the front-rear direction of the carrying device 100, wherein the front-rear direction of the carrying device 100 is perpendicular to the height direction of the carrying device 100, and the front-rear direction of the carrying device 100 is perpendicular to the direction in which the first support 110 faces the second support 120.

[0071] In this way, when the carrying area 150 carries the material 200, the flexible connecting member 140 located below can support the material 200. The flexible connecting members 140 located on both sides of the carrying device 100 in the front-rear direction can limit the front and rear sides of the material 200, respectively. In addition, the first support 110 and the second support 120 can limit the material 200 between the first support 110 and the second support 120 in the left-right direction.

[0072] Reference Figure 1 In some embodiments, the carrying device 100 further comprises a plurality of casters 160. The casters 160 are arranged at the bottom of the first support 110 and the second support 120, respectively. In this way, the position of the carrying device 100 can be adjusted more conveniently by arranging the casters 160 at the bottom of the first support 110 and the second support 120.

[0073] It is to be understood that the terminology used herein such as first and second, and the like, is only used to distinguish one entity or action from another entity or action, and does not necessarily require or imply any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0074] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the embodiments of the application, which are defined by the appended claims and their equivalents.

Claims

1. A load bearing device (100) characterized by, The utility model relates to a kind of foldable support, including: First support (110), second support (120), at least three folding mechanisms (130) and multiple flexible connectors (140); Each of the folding mechanisms (130) is respectively connected with the first support (110) and the second support (120), each of the folding mechanisms (130) can be switched between folded state and unfolded state, and both ends of each of the flexible connectors (140) are respectively connected with the first support (110) and the second support (120); In the case where each of the folding mechanisms (130) is in the unfolded state, the first support (110) and the second support (120) are spaced apart, and the flexible connector (140) is taut to form a plurality of load-bearing zones (150); In the case where each of the folding mechanisms (130) is in the folded state, the first support (110) and the second support (120) are moved towards each other.

2. The load bearing device (100) according to claim 1, characterized in that Each of the folding mechanisms (130) includes a first link (131) and a second link (132) connected by rotation, the first link (131) is connected to the first support (110) by rotation, and the second link (132) is connected to the second support (120) by rotation.

3. The load bearing device (100) according to claim 2, characterized in that Each of the folding mechanisms (130) further includes a rotation limiter (133), which is used to limit the rotation of the first link (131) relative to the second link (132) when the folding mechanism (130) is in the unfolded state.

4. The load bearing device (100) according to claim 3, characterized in that The rotation limiter (133) includes a pin (1331), the first link (131) is provided with a first insertion hole (1311), the second link (132) is provided with a second insertion hole (1321), and the pin (1331) is used to be inserted into the first insertion hole (1311) and the second insertion hole (1321) respectively when the folding mechanism (130) is in the unfolded state.

5. The load bearing device (100) according to claim 4, characterized in that The pin (1331) is inserted into the first insertion hole (1311), and the rotation limiter (133) further includes a resilient element (1332) for applying an elastic force to the pin (1331) towards the second insertion hole (1321).

6. The load bearing device (100) according to claim 5, characterized in that The pin (1331) includes a rotation operation portion (13311) and an abutting protrusion (13312); The hole wall of the first insertion hole (1311) is provided with a spiral abutting portion (1312), and the abutting protrusion (13312) abuts against the spiral abutting portion (1312) under the action of the elastic force applied by the resilient element (1332); The rotation operation portion (13311) can be rotated under the driving condition to drive the pin (1331) to move along the depth direction of the first insertion hole (1311) through the abutting protrusion (13312) and the spiral abutting portion (1312).

7. The load bearing device (100) according to claim 2, characterized in that Each of the folding mechanisms (130) further comprises a first rotating shaft (134), and the first connecting rod (131) and the second connecting rod (132) are rotationally connected through the first rotating shaft (134).

8. The load bearing device (100) according to claim 7, characterized in that Two of the at least three folding mechanisms (130) are a first folding mechanism (130a) and a second folding mechanism (130b), respectively, and the first folding mechanism (130a) is located above the second folding mechanism (130b). When each of the folding mechanisms (130) is in an unfolded state, the first rotating shaft (134) of the first folding mechanism (130a) is spaced apart from the first rotating shaft (134) of the second folding mechanism (130b) by a first distance. When each of the folding mechanisms (130) is in a folded state, the first rotating shaft (134) of the first folding mechanism (130a) is spaced apart from the first rotating shaft (134) of the second folding mechanism (130b) by a second distance; the second distance is less than the first distance.

9. The load bearing device (100) according to claim 7, characterized in that A side of the first support (110) facing the second support (120) is provided with a plurality of first supports (111), the number of the first supports (111) is equal to the number of the folding mechanisms (130), and the first connecting rod (131) of each of the folding mechanisms (130) is rotationally connected with the first support (111) in a one-to-one correspondence. The first support (110) is further provided with a plurality of first recesses (112), the number of the first recesses (112) is equal to the number of the folding mechanisms (130), one end of each of the first connecting rods (131) away from the first rotating shaft (134) is provided with a first protruding portion (1313), and in a case where each of the folding mechanisms (130) is in an unfolded state, the first protruding portion (1313) is embedded in the first recess (112) in a one-to-one correspondence.

10. The load bearing device (100) according to claim 1, characterized in that The lower side of the bearing area (150) and both sides of the bearing area (150) along the front-rear direction of the bearing device (100) are each provided with at least one flexible connecting piece (140), wherein the front-rear direction of the bearing device (100) is perpendicular to the height direction of the bearing device (100), and the front-rear direction of the bearing device (100) is perpendicular to the direction in which the first support (110) faces the second support (120).

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