CN220519987U

CN220519987U - Bearing device

Info

Publication number: CN220519987U
Application number: CN202321374054.5U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shenzhen Haiway Technology Co ltd
Current assignee: Shenzhen Haiway Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2024-02-23
Anticipated expiration: 2033-05-31

Abstract

The utility model relates to the technical field of weight conveying equipment, in particular to a bearing device capable of stabilizing the posture of a weight. The load assembly of the bearing device is hinged with the spandrel girder assembly, and the load assembly is used for bearing heavy objects. After the load component bears the weight, the spandrel girder component generates stress deformation, under the action of the gravity of the weight, when one of the first suspenders moves downwards, one of the first connecting rod and the second connecting rod rotates forwards and the other rotates reversely under the action of the drag of the first connecting rod, the second connecting rod and the linkage rod, and the second suspender also moves downwards, so that the posture change of the load component is reduced. The plane connecting rod mechanism arranged between the spandrel girder component and the load component acts on the load component, so that the attitude change of the load component is reduced, the position change of a weight borne by the load component is further reduced, the adjustment times are reduced, even no adjustment is needed, and the efficiency of the lifting operation is improved.

Description

Bearing device

Technical Field

The utility model relates to the technical field of weight conveying equipment, in particular to a bearing device capable of stabilizing the posture of a weight.

Background

The bearing device is used for conveying the heavy object to the target position. Load bearing devices typically include load bearing beams that carry a weight. When the weight is lifted, the spandrel girder is a cantilever girder, a simply supported girder or a continuous girder, and can generate stress deformation after being stressed, so that the space position of the lifted weight is changed. Particularly, for the cantilever beam, the deformation is large when one end of the cantilever beam bears the weight, so that the weight is seriously inclined, and the posture of the weight is usually required to be adjusted for multiple times, so that the technical problem of low lifting operation efficiency of the weight is caused.

Disclosure of Invention

The utility model aims to provide a bearing device which is used for solving the technical problem that the lifting operation efficiency is low because the deformation of a bearing part is large and the posture of the heavy object is changed greatly in the process of lifting the heavy object by the existing bearing device, and the posture of the heavy object is required to be adjusted for multiple times.

According to a first aspect, an embodiment provides a load bearing apparatus comprising a load bearing beam assembly, a load carrying assembly, and a planar linkage;

the load assembly is positioned below the spandrel girder assembly and hinged with the spandrel girder assembly and is used for bearing a weight; the plane connecting rod mechanism is arranged between the spandrel girder assembly and the load assembly and is used for stabilizing the posture of the load assembly when the spandrel girder assembly is deformed;

the planar linkage includes: the device comprises a first connecting rod, a second connecting rod, a linkage rod, a first suspender and a second suspender, wherein the first connecting rod is provided with an A hinge position, a B hinge position and a C hinge position, the B hinge position is positioned between the A hinge position and the C hinge position, the second connecting rod is provided with a D hinge position, an E hinge position and an F hinge position, the D hinge position is positioned between the E hinge position and the F hinge position, the linkage rod is provided with a G hinge position and an H hinge position, the first suspender is provided with a J hinge position and a K hinge position, and the second suspender is provided with an L hinge position and an M hinge position;

the hinge position B and the hinge position E are both hinged on the spandrel girder assembly, the hinge position G is hinged with the hinge position C, the hinge position H is hinged with the hinge position D, and the linkage rod, the first connecting rod and the second connecting rod are not collinear at the same time;

the J hinge position is hinged with the A hinge position, the L hinge position is hinged with the F hinge position, the K hinge position is hinged with the first hinge position of the load-carrying assembly, the second suspender is hinged with the load-carrying beam assembly, and the M hinge position is hinged with the second hinge position of the load-carrying assembly.

Further, in one embodiment, the spandrel girder assembly includes a spandrel girder, the load assembly is located below the spandrel girder and is hinged to the spandrel girder, and the B hinge position and the E hinge position are both hinged to the same side of the spandrel girder.

Further, in one embodiment, the spandrel girder assembly includes a spandrel girder and a supporting frame, the load assembly is located below the spandrel girder and is hinged to the spandrel girder, and the B hinge position and the E hinge position are both hinged to the same side of the supporting frame.

In a further embodiment, the spandrel girder is a cantilever beam, one end of the spandrel girder is a fixed end for fixing the spandrel girder, the other end is a free end, and the load assembly is hinged to a region close to the free end and far away from the fixed end.

Further, in one embodiment, the second boom is hinged to the spandrel girder assembly by the M-hinge.

Further, in one embodiment, the B hinge is located at a higher level on the spandrel beam assembly than the E hinge.

Further, in one embodiment, a linear distance between the B hinge position and the G hinge position is c, a linear distance between the G hinge position and the H hinge position is B, a linear distance between the H hinge position and the E hinge position is a, a linear distance between the B hinge position and the E hinge position is d, a linear between the B hinge position and the E hinge position is a datum line, and an included angle β between the first connecting rod and the datum line; the included angle alpha between the second connecting rod and the datum line;

beta is 0 when the first connecting rod is overlapped with the datum line, beta is positive after the first connecting rod rotates anticlockwise from the datum line position, and beta is negative after the first connecting rod rotates clockwise from the datum line position; alpha is 0 when the second connecting rod is overlapped with the datum line, alpha is positive after the second connecting rod rotates anticlockwise from the datum line position, and alpha is negative after the second connecting rod rotates clockwise from the datum line position;

the alpha and beta satisfy:

-arccos[(a ² +d ² -b ² -c ² -2bc)/2ad]<α<arccos[(a ² +b ² +d ² -c ² +2ab)/(2ad+2bd)]，

-arccos[(a ² +b ² +d ² -c ² +2ab)/(2ad+2bd)]<β<arccos[(a ² +d ² -b ² -c ² -2bc)/2ad]。

further, in one embodiment, the hinge axis of the hinge of the load bearing assembly and the spandrel girder assembly is parallel or coincident with the hinge axis of the M hinge position.

Further, in one embodiment, at least one of the first boom and the second boom is a length adjustable boom.

In a further embodiment, the length-adjustable rod comprises a first rod section and a second rod section, the first rod section is in threaded connection with the second rod section, and the length of the length-adjustable rod is adjusted by enabling the first rod section and the second rod section to rotate relatively.

According to the bearing device of the embodiment, the load bearing assembly of the bearing device is hinged with the spandrel girder assembly, and the load bearing assembly is used for bearing heavy objects. After the load component bears the weight, the spandrel girder component generates stress deformation, under the action of the gravity of the weight, when one of the first suspenders moves downwards, one of the first connecting rod and the second connecting rod rotates forwards and the other rotates reversely under the action of the drag of the first connecting rod, the second connecting rod and the linkage rod, and the second suspender also moves downwards, so that the posture change of the load component is reduced. Through locating the plane link mechanism between spandrel girder subassembly and the load subassembly to load subassembly stabilization effect, reduce load subassembly's gesture change, and then reduce load subassembly bearing's heavy object's position change, reduce the adjustment number of times and need not even to adjust, improved the efficiency of handling operation.

Drawings

FIG. 1 is an isometric view of a load bearing apparatus in one embodiment;

FIG. 2 is a schematic structural view of a load bearing apparatus according to one embodiment;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an equivalent schematic diagram of a load bearing apparatus in one embodiment (the broken line shows the load bearing apparatus after change);

fig. 5 is an equivalent schematic diagram of a load bearing apparatus according to another embodiment (the broken line shows the load bearing apparatus after being changed).

List of feature names corresponding to reference numerals in the figure: 1. a spandrel girder assembly; 11. a support frame; 111. a cantilever; 112. a supporting vertical plate; 12. a spandrel girder; 121. a fixed end; 122. a free end; 123. a hinge ear; 2. a load carrying assembly; 21. a hinge base; 22. a mounting groove; 3. a first boom; 31. k is hinged; 32. a first pole segment; 33. a second pole segment; 34. a third pole segment; 4. a second boom; 41. m is hinged; 5. a first link; 51. the hinge position B; 52. the hinge position A; 53. the hinge position C; 6. a second link; 61. e, hinging the position; 62. the hinge position D; 63. f, hinging the position; 7. a linkage rod; 71. a G hinge position; 72. the H hinge position; 81. a first hinge shaft; 82. a second hinge shaft; 91. the bearing beam is hinged with the axis; 10. and (5) a datum line.

Detailed Description

The utility model will be described in further detail below with reference to the drawings by means of specific embodiments. Wherein like elements in different embodiments are numbered alike in association. In the following embodiments, numerous specific details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted, or replaced by other elements, materials, or methods in different situations. In some instances, some operations associated with the present application have not been shown or described in the specification to avoid obscuring the core portions of the present application, and may not be necessary for a person skilled in the art to describe in detail the relevant operations based on the description herein and the general knowledge of one skilled in the art.

Furthermore, the described features, operations, or characteristics of the description may be combined in any suitable manner in various embodiments. Also, various steps or acts in the method descriptions may be interchanged or modified in a manner apparent to those of ordinary skill in the art. Thus, the various orders in the description and drawings are for clarity of description of only certain embodiments, and are not meant to be required orders unless otherwise indicated.

The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The terms "coupled" and "connected," as used herein, are intended to encompass both direct and indirect coupling (coupling), unless otherwise indicated.

When the load bearing device is used for lifting heavy objects, when the deformation of the spandrel girder of the load bearing device is large, the posture change of the heavy objects is large, and particularly, in the occasion with high requirements on the posture of the heavy objects, the stress deformation of the spandrel girder can have great influence on the posture of the heavy objects. In order to ensure the safe lifting of the weight, the posture of the weight is usually required to be adjusted. When the posture of the weight is changed greatly, the posture adjustment is usually carried out in multiple times, so that the lifting efficiency of the weight is extremely low. The application provides a load-bearing device for reduce because the influence of the stress deformation of load-bearing piece to the heavy object gesture, and then reduce the adjustment number of times and even need not to adjust. The bearing device can be used for stabilizing the weight to be in a horizontal posture and can also be used for stabilizing the weight to be in other set postures, such as lifting in an inclined posture or a specific posture when the weight is assembled, so that after the weight is conveyed to a target position, the weight is conveniently assembled or transported. The load bearing apparatus will be described in detail with reference to specific embodiments.

In some embodiments, referring to fig. 1 to 3, the load bearing apparatus includes a spandrel girder assembly 1, a load bearing assembly 2 and a planar linkage mechanism. The load assembly 2 is hinged with the spandrel girder assembly 1, the load assembly 2 is located below the spandrel girder assembly 1, and the load assembly 2 is used for bearing a weight. The plane connecting rod mechanism is arranged between the spandrel girder assembly 1 and the load assembly 2 and is used for stabilizing the posture of the load assembly when the spandrel girder assembly deforms.

The load subassembly 2 is located the below of spandrel girder subassembly 1 in this application to not restrict load subassembly 2 and be located spandrel girder subassembly 1 holistic below, also include that load subassembly 2 is located the below of spandrel girder subassembly 1 partial structure, more emphasize here that the height of load subassembly 2 is less than the height of spandrel girder 1 subassembly, make load subassembly 2 can hang on spandrel girder subassembly 1.

The planar linkage is used to stabilize the attitude of the load assembly 2, reducing the variation of the load assembly 2. The posture of the load bearing assembly 2 is stabilized, which is described in the application, not only does not change the posture of the load bearing assembly 2, but also reduces the influence of the stress deformation of the load bearing beam assembly 1 on the posture of the load bearing assembly 2, and the posture change amount of the load bearing assembly 2 is in an allowable range and is smaller than the posture change amount after the plane connecting rod mechanism is canceled.

For the form of the load beam assembly 1 and the load carrying assembly 2, any feasible solution is possible, such as: the spandrel girder assembly 1 comprises a supporting frame 11 and a spandrel girder 12, wherein the spandrel girder 12 is a cantilever girder, and the cantilever girder is fixed with the supporting frame 11, and the detailed structure of the scheme will be described below; for another example, the spandrel girder assembly 1 is a simply supported girder or a continuous girder; as another example, the bolster assembly 1 may also be a horizontally arranged load-bearing frame or load-bearing pan. Similarly, the load assembly 2 may have a similar structure to the load beam assembly 1, but the load assembly 2 is used as an assembly for carrying a heavy object, which requires that the load beam assembly 1 also has a difference, for example, when the load assembly 2 is used for lifting the heavy object, a plurality of hooks need to be arranged on the load assembly 2, and the load assembly 2 adopts a load-bearing disc or a load-bearing frame, which is better, and the use of a load-bearing beam is also feasible. The load carrying member is not limited to placing the weight on the upper side of the load carrying member, but also includes suspending the weight on the lower side of the load carrying member, i.e., suspending the weight by the load carrying member.

The planar linkage mechanism comprises a first boom 3, a second boom 4, a first link 5, a second link 6 and a linkage rod 7.

The first boom 3 has a J-joint position and a K-joint position 31 that is articulated with the load assembly 2. The second boom 4 has an L-hinge position and an M-hinge position 41 hinged with the load assembly 2. The K-joint 31 is hinged to the load assembly 2 to enable the first boom 3 to rotate relative to the load assembly 2. Similarly, the second boom 4 is rotatable relative to the load assembly 2. The load assembly 2 has a first articulation position articulated to the K articulation position 31 and a second articulation position articulated to the M articulation position 41, the first articulation being located at a distance from the second articulation position.

The first link 5 has a B hinge position 51 hinged to the spandrel girder assembly 1 and the second link 6 has an E hinge position 61 hinged to the spandrel girder assembly 1. So that both the first link 5 and the second link 6 can rotate relative to the load beam assembly 1. Specifically, the middle part of the first connecting rod 5 is hinged with the spandrel girder assembly 1, and the middle part of the second connecting rod 6 is hinged with the spandrel girder assembly 1.

The link lever 7 is connected between the first link 5 and the second link 6. The linkage rod 7 includes a G hinge position 71 and an H hinge position 72. The linkage rod 7, the first link 5 and the second link 6 are not simultaneously collinear such that the first link 5 can rotate about the B hinge position 51 and the second link 6 can rotate about the E hinge position 61. The B hinge 51 and the E hinge 61 are both hinged to the spandrel girder assembly 1.

The first link 5 includes an a hinge position 52 hinged to the J hinge position and a C hinge position 53 hinged to the G hinge position 71. The second link 6 includes a D hinge 62 hinged to the L hinge and an F hinge 63 hinged to the H hinge 72.

The hinge position 51 is located between the hinge position 52 and the hinge position 53, and the hinge position 61 is located between the hinge position 62 and the hinge position 63, so that when the first link 5 rotates relative to the load assembly 2, the rotation direction of the second link 6 is opposite to the rotation direction of the first link 5, and the posture of the load assembly 2 is stabilized.

The load assembly 2 is hinged to the spandrel girder assembly 1, when the load assembly 2 bears or lifts a heavy object, the acting force of the heavy object on the load assembly 2 is transmitted to the spandrel girder assembly 1, the spandrel girder assembly 1 is stressed and then generates stress deformation, and the position of the load assembly 2 is changed after the spandrel girder assembly 1 is stressed and deformed. Since the first boom 3 and the second boom 4 of the planar linkage are both hinged to the load carrying assembly 2, after the position of the load carrying assembly 2 changes, at least one of the first boom 3 and the second boom 4 will change position with the load carrying assembly 2. The first connecting rod 5 and the second connecting rod 6 are both hinged on the spandrel girder component 1, under the linkage action of the first connecting rod 5, the second connecting rod 6 and the linkage rod 7, the first suspender 3 and the second suspender 4 are mutually held down, the posture change quantity of the load component 2 is reduced, and even the posture of the load component 2 is stabilized, so that the change quantity of the heavy object posture is reduced, the adjustment times of the heavy object posture are reduced, and even the heavy object posture is not required to be adjusted.

The hinge in this application includes two spare parts through the mode of articulated shaft connection, also includes two spare parts through spherical pair connection, the mode of spherical hinge connection promptly. In one embodiment, when two hinge positions are hinged, one hinge position is provided with a slot, the other hinge position is inserted into the slot, and the hinge shaft passes through the two hinge positions. In one embodiment, the two hinge positions are folded together when hinged, and the hinge shaft directly passes through the two hinge positions to realize the hinge.

Referring to fig. 1 to 3, in order to improve stability of the load bearing apparatus, the hinge axis of the hinge between the load bearing assembly 2 and the load bearing beam assembly 1 is perpendicular to the plane of the planar linkage mechanism. The articulation of the load bearing assembly 2 and the spandrel girder assembly 1 can enable the load bearing assembly 2 to have fewer degrees of freedom and to be more stable when rotating relative to the spandrel girder assembly 1.

In one embodiment, referring to fig. 1 to 3, the b hinge 51 is hinged to the spandrel girder assembly 1 through a first hinge shaft 81, and the E hinge 61 is hinged to the spandrel girder assembly 1 through a second hinge shaft 82. The first hinge shaft 81 and the second hinge shaft 82 are both rotatably assembled to the spandrel girder assembly 1. In other embodiments, the first hinge shaft 81 and the second hinge shaft 82 may be integrally provided with the spandrel girder assembly 1, and the B hinge site 51 may include the first hinge shaft 81, in which case no additional hinge shaft is required. Similarly, in the hinge described in this application, the hinge axis of the hinge position may exist alone or may be integrally formed with one of the two parts that are hinged to each other.

In one embodiment, referring to fig. 1 to 3, the first boom 3, the second boom 4, the first link 5, the second link 6 and the linkage rod 7 in the planar linkage mechanism are straight rods. The hinge position 52A and the hinge position 53C are respectively positioned at two ends of the first connecting rod 5, the hinge position 62D and the hinge position 63F are respectively positioned at two ends of the second connecting rod 6, the hinge position 71G and the hinge position 72H are respectively positioned at two ends of the connecting rod 7, the hinge position 31K is positioned at the end of the first suspender 3, and the hinge position 41M is positioned at the end of the second suspender 4. In some other embodiments, the positions of the first boom 3, the second boom 4, the first link 5, the second link 6 and the articulation on the linkage rod 7 in the planar linkage mechanism can be adjusted as required, and besides the rod end, the first boom, the second boom and the articulation on the linkage rod 7 can be arranged near the middle, for example: the first link 5 is long, and the a hinge position 52, the C hinge position 53, and the B hinge position 51 are all located at the middle of the first link 5. In other embodiments, any one of the first boom 3, the second boom 4, the first link 5, the second link 6, and the linkage 7 may be a bent rod, as desired.

In one embodiment, referring to fig. 1-3, the level of the b hinge 51 on the spandrel girder assembly 1 is higher than the level of the E hinge 61 on the spandrel girder assembly 1.

The first linkage rod 7 is located above the load assembly 2, and the vertical distance of the G-hinge position 71 from the load assembly 2 is greater than the vertical distance of the H-hinge position 72 from the load assembly 2. The first boom 3 and the second boom 4 are straight rods extending up and down, and of course, the up and down extension described in the application does not refer to that the booms are perpendicular to the horizontal plane, and the first boom 3 and the second boom 4 are in a substantially vertical state and also include the case that the first boom 3 and the second boom 4 extend obliquely.

Further, in one embodiment, the second boom 4 is hinged to the spandrel girder assembly 1 through the M-hinge position 41. Referring to fig. 1 to 3, the hinge axis of the load assembly 2 and the spandrel 12 is a spandrel hinge axis 91, and the hinge axis of the m hinge 41 coincides with the spandrel hinge axis 91. This results in a more timely response of the planar linkage as the position of the load assembly 2 changes. In some other embodiments, the hinge axis 91 of the spandrel girder may be disposed at a parallel interval with the hinge axis of the M hinge position 41, and the parallel interval includes various types, and on the premise that the planar linkage mechanism can operate normally, the positional relationship between the hinge axis of the M hinge position 41 and the hinge axis 91 of the spandrel girder may be any feasible manner, for example: the hinge axis of the M hinge 41 may be located at the upper side of the spandrel girder hinge axis 91, the lower side of the spandrel girder hinge axis 91, or the left or right side of the spandrel girder hinge axis 91.

In order to reduce the stress of the planar linkage, further, referring to fig. 1 to 3, in one embodiment, the spandrel girder assembly 1 includes a spandrel girder 12 and a supporting frame 11, the spandrel girder 12 is fixed on the supporting frame 11, the load assembly 2 is hinged on the spandrel girder 12, and the B hinge position 51 and the E hinge position 61 are both hinged on the supporting frame 11. In one embodiment, both the B hinge and the E hinge are hinged to the same side of the support frame 11.

The effort that the heavy object that the load subassembly 2 bears or handling received is transmitted to spandrel girder 12 like this, and support frame 11 atress deformation is little, and B articulated position 51 and E articulated position 61 all articulate on support frame 11 after, and the effort that the heavy object transmitted to plane link mechanism is little, reduces the intensity requirement to plane link mechanism, and plane link mechanism is difficult to damage, and the operation is also more stable.

In a further embodiment, referring to fig. 1 to 3, in order to increase the coverage area of the load bearing apparatus, the spandrel girder 12 is a cantilever, one end of the spandrel girder 12 is a fixed end 121 fixed on the supporting frame 11, and the other end is a free end 122. The load carrying assembly 2 is hinged to a region near the free end 122 and away from the fixed end 121. Compared with other beams, the spandrel girder 12 adopts a cantilever beam and is suspended at one side of the supporting frame 11, so that the occupied space is small, and the installation and the debugging are convenient; the coverage area is large, heavy objects with large volumes can be lifted, and the heavy objects can be lifted conveniently.

After the load assembly 2 carries or lifts the heavy object, the free end 122 of the spandrel girder 12 deforms greatly, and the influence on the posture of the load assembly 2 can be reduced through the planar link mechanism. In some other embodiments, the spandrel girder 12 may also be a simply supported girder or a continuous girder.

In order to facilitate the arrangement of the planar linkage, the support frame 11 includes a cantilever 111, the extension direction of the cantilever 111 coincides with the extension direction of the spandrel girder 12, the cantilever 111 and the spandrel girder 12 are arranged at intervals in the extension direction of the hinge axis of the B hinge position 51, the B hinge position 51 and the E hinge position 61 are both hinged on the cantilever 111, and the planar linkage is provided in the interval between the cantilever 111 and the spandrel girder 12. Thus, the layout of the plane link mechanism is convenient, the overall layout is more compact, and the occupied space is smaller. In addition, in other embodiments, the cantilever 111 may be positioned in a diagonally upward or downward orientation of the spandrel girder 12.

In one embodiment, referring to fig. 1 to 3, the supporting frame 11 includes a supporting riser 112, and the cantilever 111 and the spandrel girder 12 are fixed on the supporting riser 112. Because the spandrel girder 12 mainly bears the acting force transmitted by the weight, the cantilever 111 is stressed less, so that the planar linkage mechanism operates more stably. In some other embodiments, the support frame 11 may be in any feasible manner, such as a column, or truss structure.

The cantilever 111 of the spandrel girder assembly 1 is used for installing a plane link mechanism, the spandrel girder 12 is used for bearing the acting force transmitted to the spandrel girder assembly 1 by the load assembly 2, and the cantilever 111 and the spandrel girder 12 respectively bear different functions, thereby being beneficial to guaranteeing the stable operation of the bearing device.

In other embodiments, the load bearing beam assembly 1 includes a load bearing beam 12, the B hinge 51 and the E hinge 61 are each hinged to the same side of the load bearing beam 12, and the load bearing assembly 2 is hinged to the load bearing beam 12. Further, one end of the spandrel girder 12 is a fixed end 121 for fixing the spandrel girder 12, the other end is a free end 122, and the load assembly 2 is hinged to a region near the free end 122 and far from the fixed end 121.

Further, referring to fig. 1 to 3, in order to further increase the coverage area of the load bearing apparatus, the middle portion of the load bearing assembly 2 is hinged to the free end 122 of the spandrel girder 12, the first boom 3 is hinged to the edge of the load bearing assembly 2, and the second boom 4 is hinged to the middle portion of the load bearing assembly 2; the free end 122 of the load beam 12 is located above the middle of the load assembly 2. Thus, part of the load assembly 2 extends out of the coverage area of the spandrel girder 12, so that the coverage area of the load bearing device is larger, and the operation coverage area of the load bearing device is enlarged.

In some other embodiments, the free end 122 of the bolster 12 may be located above the edges of the load assembly 2, with the middle of the bolster 12 located directly above the middle of the load assembly 2. The middle portion described in this application is not limited to a straight middle position, and should be understood as a section of a region including a middle position, and a portion offset from the middle should be considered as a portion of the middle portion.

Specifically, referring to fig. 1 to 3, the load assembly 2 includes a hinge base 21, a mounting groove 22 is formed in the hinge base 21, a hinge lug 123 is formed on the lower side of the spandrel girder 12, the hinge lug 123 extends into the mounting groove 22, and the spandrel girder hinge shaft 9 passes through the hinge lug 123 and the hinge base 21. The axis of the spandrel girder hinge shaft 9 is the spandrel girder hinge axis 91. In this embodiment, the spandrel girder hinge shaft 9 passes through the M hinge position 41, and the second hanger rod is hinged with the load assembly 2 through the spandrel girder hinge shaft 9.

Further, in one embodiment, as shown in fig. 4, the linear distance between the B hinge position 51 and the G hinge position 71 is c, the linear distance between the G hinge position 71 and the H hinge position 72 is B, the linear distance between the H hinge position 72 and the E hinge position 61 is a, the linear distance between the B hinge position 51 and the E hinge position 61 is d, the linear distance between the B hinge position 51 and the E hinge position 61 is the reference line 10, and the included angle β between the first link 5 and the reference line 10; the included angle alpha between the second connecting rod 6 and the datum line 10;

beta is 0 when the first connecting rod 5 is overlapped with the datum line 10, beta is positive after the first connecting rod 5 rotates anticlockwise from the datum line 10, and beta is negative after the first connecting rod 5 rotates clockwise from the datum line 10; when the second connecting rod 6 is overlapped with the datum line 10, alpha is 0, alpha is positive after the second connecting rod 6 rotates anticlockwise from the datum line 10, and alpha is negative after the second connecting rod 6 rotates clockwise from the datum line 10;

the alpha and beta satisfy:

further, as shown in fig. 4, the B hinge 51 is higher than the E hinge 61. In other embodiments, as shown in FIG. 5, the B-hinge 51 may also be lower than the E-hinge 61.

In one embodiment, referring to fig. 3, for convenience in adjusting the planar linkage, at least one of the first boom 3 and the second boom 4 is a length adjustable rod. By adjusting the lengths of the first boom 3 and the second boom 4, it is possible to correct the planar link mechanism and adjust the posture of the load module 2.

Further, in one embodiment, the length-adjustable rod includes a first rod segment 32 and a second rod segment 33, the first rod segment 32 is threadably coupled to the second rod segment 33, and the length of the length-adjustable rod is adjusted by rotating the first rod segment 32 relative to the second rod segment 33. Specifically, in this embodiment, the length-adjustable rod includes a third rod segment 34 in threaded connection with a second rod segment 33, where the first rod segment 32 and the third rod segment 34 are rod connectors, the second rod segment 33 is a hollow structure, and the rod connectors are respectively in threaded connection with two ends of the second rod segment 33. In order to improve the thread adjusting efficiency, the threads on one of the first and third rod sections 32 and 34 which are matched with the second rod section 33 are forward threads, and the threads on the other of the first and third rod sections and 33 which are matched with the second rod section are reverse threads, so that the first and third rod sections 32 and 34 can be moved back to back or relatively by screwing the second rod section 33, thereby rapidly adjusting the length of the length-adjustable rod.

Specifically, in one embodiment, as shown in fig. 1, only the first boom 3 is a length adjustable rod. In some other embodiments, the first boom 3 and the second boom 4 may be both length adjustable bars. Of course, only the second boom 4 may be a length-adjustable boom; the length of both the first boom 3 and the second boom 4 may also not be adjustable.

In some embodiments of the load bearing apparatus, the load bearing apparatus includes a drive mechanism for driving the load bearing apparatus to hoist the weight. In some embodiments, the load bearing device may be a trolley or may be mounted in a fixed position, and may be used only to cause the load bearing device to raise and lower a weight.

The foregoing description of the utility model has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, deformations or substitutions may also be made by the person skilled in the art to which the utility model pertains, based on the idea of the utility model.

Claims

1. The bearing device is characterized by comprising a spandrel girder component, a load component and a plane connecting rod mechanism;

the planar linkage includes: the device comprises a first connecting rod, a second connecting rod, a linkage rod, a first suspender and a second suspender; the first connecting rod is provided with an A hinge position, a B hinge position and a C hinge position, the B hinge position is positioned between the A hinge position and the C hinge position, the second connecting rod is provided with a D hinge position, an E hinge position and an F hinge position, the D hinge position is positioned between the E hinge position and the F hinge position, the linkage rod is provided with a G hinge position and an H hinge position, the first suspender is provided with a J hinge position and a K hinge position, and the second suspender is provided with an L hinge position and an M hinge position;

2. The load bearing apparatus of claim 1, wherein the bolster assembly comprises a bolster, the load carrying assembly being positioned below and hinged to the bolster, the B hinge location and the E hinge location both being hinged to the same side of the bolster.

3. The load bearing apparatus of claim 1, wherein the bolster assembly comprises a bolster and a support frame, the load carrying assembly being positioned below and hinged to the bolster, the B hinge location and the E hinge location both being hinged to the same side of the support frame.

4. The load bearing apparatus of claim 3 wherein the bolster is a cantilever beam, one end of the bolster is a fixed end for securing the bolster, the other end is a free end, and the load bearing assembly is hinged to a region proximate the free end and distal from the fixed end.

5. The load bearing apparatus of claim 1 wherein said second boom is hinged to said bolster assembly by said M hinge location.

6. The load bearing apparatus of claim 1 wherein the B-hinge is located at a higher level on the bolster assembly than the E-hinge is located at the bolster assembly.

7. The load bearing apparatus of claim 1 wherein the linear distance between the B hinge and the G hinge is c, the linear distance between the G hinge and the H hinge is B, the linear distance between the H hinge and the E hinge is a, the linear distance between the B hinge and the E hinge is d, the linear between the B hinge and the E hinge is a reference line, and the angle β between the first link and the reference line is the angle β; the included angle alpha between the second connecting rod and the datum line;

the alpha and beta satisfy:

8. the load bearing apparatus of claim 1 wherein the axis of articulation of the load carrying assembly to the bolster assembly is parallel or coincident with the axis of articulation of the M hinge location.

9. The load bearing apparatus of any one of claims 1-8, wherein at least one of the first boom and the second boom is a length adjustable bar.

10. The load bearing apparatus of claim 9, wherein the length adjustable bar comprises a first bar section and a second bar section, the first bar section being threadably coupled to the second bar section, the adjustment of the length adjustable bar being accomplished by rotating the first bar section relative to the second bar section.