X-shaped multifunctional bracket

Abstract

The present invention relates to an X-shaped multifunctional bracket, comprising a first tripod, a second tripod and a crossbar, characterized in that the first tripod comprises a first mounting seat located in the middle, the lower front side of the first mounting seat is fixedly connected to the first front foot rod, the lower rear side of the first mounting seat is rotatably hinged to the first rear foot rod, and a rotation limiting structure is provided between the first rear foot rod and the first mounting seat; the upper front side of the first mounting seat is rotatably hinged to the first front swing rod, the upper rear side of the first mounting seat is fixedly connected to the first rear swing rod, and a rotation limiting structure is provided between the first front swing rod and the first mounting seat; when unfolded, the first front swing rod and the first rear swing rod gradually fork and expand outward from the lower end to the upper end; the first front swing rod can be flipped to be parallel and close to the first rear swing rod. The present invention is connected to the foot rod and the swing rod by a fixed seat of a special shape at the same time, which is foldable and deformable, and is easy to carry; and a sawtooth bracket is added to provide a variety of different support structures, which is more practical.

Description

Technical Field

[0001] The invention belongs to the field of woodworking brackets, and in particular relates to an X-shaped multifunctional bracket, which can undergo a variety of structural deformations to meet different support requirements during woodworking operations. Background Art

[0002] When woodworking, a support is needed to assist in supporting the wood. The existing support has a simple structure, is solid and cannot be deformed, is not conducive to carrying, has a single function, and cannot meet the various support requirements of the wood. Summary of the invention

[0003] The present invention mainly aims at the above problems and invents an X-shaped multifunctional bracket, which is connected to the foot rod and the swing rod by a special-shaped fixing seat at the same time, so that it is foldable and deformable and easy to carry; and a serrated bracket is added to provide a variety of different supporting structures, which is multifunctional and more practical.

[0004] The above technical problem of the present invention is implemented through the following technical scheme: an X-shaped multifunctional bracket, comprising a first tripod and a second tripod arranged in parallel and side by side, and a cross bar supported by the first tripod and the second tripod, characterized in that the first tripod comprises a first mounting seat located in the middle, the lower front side of the first mounting seat is fixedly connected to the first front foot rod, the lower rear side of the first mounting seat is rotatably hinged to the first rear foot rod, and a rotation limiting structure is arranged between the first rear foot rod and the first mounting seat; when unfolded, the first front foot rod and the first rear foot rod gradually fork and expand outward from the upper end to the lower end; the first rear foot rod can be flipped to be parallel and close to the first front foot rod.

[0005] The upper front side of the first mounting seat is rotationally hinged to the first front swing bar, the upper rear side of the first mounting seat is fixedly connected to the first rear swing bar, and a rotation limiting structure is arranged between the first front swing bar and the first mounting seat; when unfolded, the first front swing bar and the first rear swing bar gradually spread apart from the lower end to the upper end; the first front swing bar can be flipped to be parallel and close to the first rear swing bar.

[0006] The first tripod has the same structure as the second tripod. The second tripod comprises a second mounting seat in the middle, a second front swing rod and a second rear swing rod in the upper part, and a second front foot rod and a second rear foot rod in the lower part.

[0007] A front crossbar is connected between the first front swing bar and the second front swing bar, and a rear crossbar is connected between the first rear swing bar and the second rear swing bar; a sawtooth bracket is provided on the front crossbar or the rear crossbar. The sawtooth bracket is used to support round timber.

[0008] The first front swing arm, the second front swing arm and the front cross bar form an integral body and move synchronously; the first rear swing arm, the second rear swing arm and the rear cross bar form an integral body and move synchronously; through rotation and positioning, the former and the latter can be separated in a V shape or can be fitted side by side.

[0009] The first front foot rod and the second front foot rod are integrated and move synchronously; the first rear foot rod and the second rear foot rod are integrated and move synchronously; the former and the latter can be supported in a V-shaped split, or can be fitted side by side.

[0010] Preferably, the sawtooth bracket comprises a V-shaped structural member, and the inner side edges of the V-shaped structural member are arranged as concave and convex sawtooth edges. The sawtooth bracket is mainly used to support logs, and the logs are placed in the V-shaped sawtooth edge space formed by the sawtooth bracket.

[0011] Preferably, the sawtooth bracket is rotatably hinged to the rear crossbar via a hinge, and a rotation limiting structure for limiting the rotation direction and rotation angle of the sawtooth bracket is provided between the sawtooth bracket and the rear crossbar. The rotation limiting structure is used to adjust the relative position of the sawtooth bracket, so that the sawtooth bracket is located above the front crossbar and the rear crossbar when supporting round wood; and the sawtooth bracket is located below the front crossbar and the rear crossbar when supporting plate-shaped wood, and the wood is supported by the front crossbar and the rear crossbar.

[0012] Preferably, the serrated bracket is configured as a fan-shaped structural member, one side of which is configured as a concave and convex serrated edge; two fan-shaped structural members are symmetrically arranged on the rear cross bar, and a V-shaped serrated edge area with an opening facing upward can be formed between the two fan-shaped structural members; the logs can be clamped in the V-shaped serrated edge area to prevent the logs from rolling.

[0013] Preferably, the fan-shaped structural member is configured as a fan-shaped plate member, the upward side edge of the fan-shaped plate member is a concave and convex serrated edge, the center portion of the fan-shaped plate member is hinged to the middle portion of the rear cross bar through an axis, and the plate surface of the fan-shaped plate member close to the arcuate edge has an arc-shaped rotation limit groove, and a rotation limit member is connected between the rotation limit groove and the rear cross bar; the serrated bracket can be relatively flipped upward to form a V-shaped serrated area, and the serrated bracket can be relatively flipped downward to be under the rear cross bar.

[0014] Alternatively, the fan-shaped structural member is configured as two parallel fan-shaped plates, the upward sides of the two fan-shaped plates are concave and convex serrated edges, and a connecting plate is vertically connected between the downward sides of the two fan-shaped plates; the center portion of the fan-shaped structural member is hinged to the middle portion of the rear cross bar through an axis, the two parallel fan-shaped plates are respectively located on both sides of the rear cross bar, and the plate surfaces of the two fan-shaped plates close to the arc-shaped edges have an arc-shaped rotation limit groove, and a rotation limit member is connected between the two rotation limit grooves and the rear cross bar; the serrated bracket can be relatively flipped upward to form a V-shaped serrated area, and the serrated bracket can be relatively flipped downward to be under the rear cross bar.

[0015] Specifically, in two parallel fan-shaped plates, a plurality of limit holes are spaced apart on the rotation limit groove of one of the fan-shaped plates, and the diameter of the limit hole is larger than the width of the limit groove. The rotation limit member can be a rivet or screw with a clamping head at the end and used in conjunction with a nut. The limit member as a whole crosses the two limit grooves. When in the rotating state, the clamping head is tightly attached to the outer side of the limit groove of the fan-shaped plate; when limiting, the clamping head is correspondingly embedded in the limit hole to form a limit.

[0016] Preferably, the first mounting seat is configured as a plate, and a fixing hole is provided on the plate surface at the lower left corner of the first mounting seat, and the plate surface at the lower left corner is fixedly connected to the upper end of the first front foot rod by a fastener; a fixing hole is provided on the plate surface at the upper right corner of the first mounting seat, and the plate surface at the upper right corner is fixedly connected to the lower end of the first rear swing rod by a fastener; a hinge hole and an arc-shaped limiting groove are provided on the plate surface at the upper left corner of the first mounting seat, and the plate surface at the upper left corner is hinged to the lower end of the first front swing rod, and a limiting member is connected in the arc-shaped limiting groove, and the limiting member is connected to the first front swing rod; a hinge hole and an arc-shaped limiting groove are provided on the plate surface at the lower right corner of the first mounting seat, and the plate surface at the lower right corner is hinged to the upper end of the first rear foot rod, and a limiting member is connected in the arc-shaped limiting groove, and the limiting member is connected to the first rear foot rod.

[0017] Specifically, the first mounting seat is set as a plate, the main body of the first mounting seat is a square plate with four rounded corners and the edges on both sides of the plate are V-shaped and concave; the lower left corner of the first mounting seat has a first front foot rod mounting part in the shape of a strip extending obliquely downward; the upper right corner of the first mounting seat has a first rear swing rod mounting part in the shape of a strip extending obliquely upward; the plate surface at the upper left corner of the first mounting seat has a hinge hole and an arc-shaped hollow rotation limit groove; and the lower end of the first front swing rod is hinged to the upper left corner of the first mounting seat through an axis, and at the same time, the lower end of the first front swing rod is also connected to a positioning piece, and the positioning piece passes through the rotation limit groove; the plate surface at the lower right corner of the first mounting seat has a hinge hole and an arc-shaped hollow rotation limit groove; and the upper end of the first rear foot rod is hinged to the lower right corner of the first mounting seat through an axis, and at the same time, the upper end of the first rear foot rod is also connected to a positioning piece, and the positioning piece passes through the rotation limit groove.

[0018] Preferably, an auxiliary mounting plate is provided on the inner side of the first mounting seat, the auxiliary mounting plate is parallel to the first mounting seat, and the first mounting seat and the auxiliary mounting plate jointly clamp the ends of the first front foot rod and the first rear swing rod in the middle and fix them together, the first mounting seat and the auxiliary mounting plate jointly clamp the ends of the first front swing rod and the first rear foot rod in the middle and are hinged to them together; the structure of the second mounting seat is the same as that of the first mounting seat, and an auxiliary mounting plate is provided on the inner side of the second mounting seat.

[0019] Preferably, a first storage board is arranged between the upper parts of the first front foot rod and the first rear foot rod, and the two ends of the front side of the first storage board are respectively hinged to the first front foot rod and the second front foot rod; at the same time, a support member is arranged on the first rear foot rod and the second rear foot rod, and when the first storage board is in a horizontal state, the support member is supported under the two ends of the rear side of the first storage board; the board surface of the storage board is provided with a hand hole for easy grasping; a connecting rod is hinged on the left and right sides of the first storage board respectively. When the bracket is unfolded, the first storage board is horizontal; when the bracket is folded, the first storage board flips to a vertical tilt. In this process, the connecting rod moves up and down accordingly, and drives the second storage board below to flip. When the bracket is folded, the hand is held at the hand hole for lifting.

[0020] Preferably, a second storage board is provided below the first storage board, and the two ends of the front side of the second storage board are respectively hinged to the first front foot rod and the second front foot rod; and the lower ends of the connecting rods on both sides of the first storage board are hinged to both sides of the second storage board. Driven by the connecting rods, when the bracket is unfolded, the second storage board is horizontal; when the bracket is folded, the second storage board flips to a vertical tilt.

[0021] Preferably, the lower ends of the first front foot rod and the first rear foot rod are provided with relatively convex foot pads, which protrude in the direction away from the second front foot rod and the second rear foot rod; the lower ends of the second front foot rod and the second rear foot rod are provided with relatively convex foot pads, which protrude in the direction away from the first front foot rod and the first rear foot rod; when in the unfolded state, the convex ends of the foot pads, the ends of the front crossbars, and the ends of the rear crossbars can be in the same plane and can form a support surface. The bracket is unfolded and swung sideways, and then a tabletop is placed on the support plane formed by the foot pads and the ends of the crossbars to form a working platform.

[0022] In summary, the present invention has the following advantages compared with the prior art:

[0023] The tripod of the present invention is composed of a special-shaped fixing seat connecting a foot rod and a swing rod. The foot rod and the swing rod are highly flexible, foldable and deformable, and easy to carry. The present invention can be transformed into a variety of bracket structures, and a serrated bracket is added to provide a variety of different forms of support. It can also be combined with a table top to form a workbench, which is multifunctional and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the first application state of the present invention;

[0025] Figure 2 It is a side view of a first application state of the present invention;

[0026] Figure 3 is a schematic diagram of a second application state of the present invention;

[0027] Figure 4 is a schematic diagram of a third application state of the present invention;

[0028] Figure 5 is a schematic diagram of a fourth application state of the present invention;

[0029] Figure 6 It is a schematic diagram of the folded state of the present invention.

[0030] The numbers in the figure are: 1. first tripod; 10. first mounting seat; 11. first front foot rod; 13. first rear foot rod; 15. first front swing rod; 17. first rear swing rod; 18. front foot rod mounting portion; 19. rear swing rod mounting portion; 2. second tripod; 20. second mounting seat; 22. second front foot rod; 24. second rear foot rod; 26. second front swing rod; 28. second rear swing rod; 3. front cross bar; 4. rear cross bar; 5. serrated bracket; 51. rotation limit groove; 52. rotation limit member; 53. connecting plate; 6. auxiliary mounting plate; 7. first storage plate; 70. hand hole; 71. connecting rod; 8. second storage plate; 9. foot cover pad. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Embodiment 1:

[0033] like Figure 1 , 2 As shown, an X-shaped multifunctional bracket is mainly composed of a first tripod 1 and a second tripod 2 arranged in parallel, and a crossbar supported by the first tripod 1 and the second tripod 2. The first tripod 1 and the second tripod 2 have the same structure.

[0034] The first tripod 1 includes a first mounting seat 10 located in the middle, a first front leg rod 11 connected to the first mounting seat 10 , a first rear leg rod 13 , a first front swing rod 15 , and a first rear swing rod 17 .

[0035] The first mounting seat 10 is configured as a plate, and the main body of the first mounting seat 10 is a square plate with four rounded corners and the edges on both sides of the plate are V-shaped and concave; the lower left corner of the first mounting seat 10 has a front foot rod mounting portion 18 in the shape of a strip extending obliquely downward, and the front foot rod mounting portion 18 has a fixing hole, and the first front foot rod 11 is fixedly connected to the front foot rod mounting portion 18 by fasteners such as rivets or bolts and nuts; the upper right corner of the first mounting seat 10 has a rear swing rod mounting portion 19 in the shape of a strip extending obliquely upward, and the rear swing rod mounting portion 19 has a fixing hole, and the first rear swing rod 17 is fixedly connected to the rear swing rod mounting portion 19 by fasteners such as rivets or bolts and nuts.

[0036] The plate surface at the upper left corner of the first mounting seat 10 has a hinge hole and an arc-shaped hollow rotation limit groove 51. The lower end of the first front swing arm 15 is hinged to the upper left corner of the first mounting seat 10 through a pin. At the same time, the lower end of the first front swing arm 15 is also connected to a positioning piece, which passes through the rotation limit groove 51.

[0037] The plate surface at the lower right corner of the first mounting seat 10 has a hinge hole and an arc-shaped hollow rotation limit groove 51; the upper end of the first rear foot rod 13 is hinged to the lower right corner of the first mounting seat 10 through a pin, and at the same time, the upper end of the first rear foot rod 13 is also connected to a positioning piece, which passes through the rotation limit groove 51.

[0038] When the first tripod 1 is unfolded, the first front leg rod 11 and the first rear leg rod 13 gradually spread outward from the upper end to the lower end, and the first front swing rod 15 and the first rear swing rod 17 gradually spread outward from the lower end to the upper end; when folded, the first rear leg rod 13 can be flipped to be parallel and close to the first front leg rod 11, and the first front swing rod 15 can be flipped to be parallel and close to the first rear swing rod 17.

[0039] The first tripod 1 and the second tripod 2 have the same structure and are symmetrically arranged. The second tripod 2 includes a second mounting seat 20 located in the middle, a second front swing rod 22 located on the front side of the upper part, a second rear swing rod 24 located on the rear side of the upper part, a second front foot rod 26 located on the front side of the lower part, and a second rear foot rod 28 located on the rear side of the lower part.

[0040] An auxiliary mounting plate 6 is arranged on the inner side of the first mounting seat 10, and the auxiliary mounting plate 6 is arranged as a Z-shaped plate. The auxiliary mounting plate 6 is parallel to the first mounting seat 10, and the first mounting seat 10 and the auxiliary mounting plate 6 jointly clamp the ends of the first front foot rod 11 and the first rear swing rod 17 in the middle and fix them together. The first mounting seat 10 and the auxiliary mounting plate 6 jointly clamp the ends of the first front swing rod 15 and the first rear foot rod 13 in the middle and are hinged to them together.

[0041] An auxiliary mounting plate 6 is arranged on the inner side of the second mounting seat 20, and the auxiliary mounting plate 6 is arranged as a Z-shaped plate. The auxiliary mounting plate 6 is parallel to the second mounting seat 20, and the second mounting seat 20 and the auxiliary mounting plate 6 jointly clamp the ends of the second front foot rod 22 and the second rear swing rod 28 in the middle and fix them together. The second mounting seat 20 and the auxiliary mounting plate 6 jointly clamp the ends of the second front swing rod 26 and the second rear foot rod 24 in the middle and are hinged to them together.

[0042] The front cross bar 3 is vertically connected between the upper ends of the first front swing bar 15 and the second front swing bar 26 , and the rear cross bar 4 is connected between the upper ends of the first rear swing bar 17 and the second rear swing bar 28 .

[0043] A serrated bracket 5 is installed on the rear cross bar 4. Specifically, the serrated bracket 5 is configured as two groups of fan-shaped structural members, each group of fan-shaped structural members is configured as two parallel fan-shaped plate members, the upward sides of the two fan-shaped plate members are concave and convex serrated edges, and a connecting plate 53 is vertically connected between the downward sides of the two fan-shaped plate members; the center portion of the fan-shaped structural member is hinged to the middle portion of the rear cross bar 4 by a pin, and the two parallel fan-shaped plate members are respectively located on both sides of the rear cross bar 4, and the plate surfaces of the two fan-shaped plates close to the arc-shaped edges have an arc-shaped rotation limit groove 51, and a rotation limit member 52 is connected between the two rotation limit grooves 51 and the rear cross bar 4.

[0044] Specifically, in two parallel fan-shaped plates, three limiting holes are evenly distributed at both ends and the middle of the rotation limit groove 51 of one of the fan-shaped plates. The diameter of the limiting hole is larger than the width of the rotation limit groove, and the rotation limit member 52 can be a rivet or screw with a clamping head at the end and used in conjunction with a nut. The limiting member as a whole crosses the two rotation limit grooves. When in the rotating state, the clamping head is tightly attached to the outer side of the rotation limit groove 52 of the fan-shaped plate; when limiting, the clamping head is correspondingly embedded in the limiting hole to form a limit.

[0045] The two groups of fan-shaped structural members are symmetrically arranged to form a V-shaped serrated area. When in use, the serrated bracket 5 can be relatively flipped upward to form the V-shaped serrated area; when not in use, the serrated bracket 5 can be relatively flipped downward to be under the rear cross bar 4.

[0046] The first storage board 7 is connected between the upper parts of the first front foot rod 11 and the first rear foot rod 13, and the two ends of the front side of the first storage board 7 are respectively hinged to the upper parts of the first front foot rod 11 and the second front foot rod 22; at the same time, relatively raised support members are provided on the first rear foot rod 13 and the second rear foot rod 24, and the support members can be exposed bolts; when the first storage board 7 is in a horizontal state, the support members are supported under the two ends of the rear side of the first storage board 7; the board surface of the first storage board 7 has a hand hole 70 for easy grasping, and when the bracket is folded, the hand is grasped at the hand hole 70 for lifting.

[0047] A connecting rod 71 is hinged on the left and right sides of the first storage plate 7 respectively; a second storage plate 8 is arranged below the first storage plate 7, and the two ends of the front side of the second storage plate 8 are respectively hinged to the lower parts of the first front foot rod 11 and the second front foot rod 22; and the lower ends of the connecting rods 71 ​​on both sides of the first storage plate 7 are correspondingly hinged to the two sides of the second storage plate 8.

[0048] The lower ends of the first front foot rod 11 and the first rear foot rod 13 are sleeved with a relatively convex foot cover pad 9, which protrudes in the direction away from the second front foot rod 22 and the second rear foot rod 24; the lower ends of the second front foot rod 22 and the second rear foot rod 24 are sleeved with a relatively convex foot cover pad 9, which protrudes in the direction away from the first front foot rod 11 and the first rear foot rod 13. When the bracket is in the unfolded state, the convex end of the foot cover pad 9, the end of the front cross bar 3, and the end of the rear cross bar 4 can be in the same plane and can form a support surface, and a horizontal plate is placed on the support surface to form a work surface.

[0049] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An X-shaped multifunctional bracket, comprising a first tripod (1) and a second tripod (2) arranged in parallel and side by side, and a crossbar supported by the first tripod and the second tripod, characterized in that: The first tripod comprises a first mounting seat (10) located in the middle, the lower front side of the first mounting seat is fixedly connected to the first front foot rod (11), the lower rear side of the first mounting seat is rotatably hinged to the first rear foot rod (13), and a rotation limiting structure is provided between the first rear foot rod and the first mounting seat; when unfolded, the first front foot rod and the first rear foot rod gradually fork and expand outward from the upper end to the lower end; the first rear foot rod can be flipped to be parallel to and close to the first front foot rod; The upper front side of the first mounting seat is rotatably hinged to the first front swing bar (15), the upper rear side of the first mounting seat is fixedly connected to the first rear swing bar (17), and a rotation limiting structure is provided between the first front swing bar and the first mounting seat; when unfolded, the first front swing bar and the first rear swing bar gradually fork and expand outward from the lower end to the upper end; the first front swing bar can be flipped to be parallel to and close to the first rear swing bar; The first tripod has the same structure as the second tripod, the second tripod comprising a second mounting seat (20) located in the middle, a second front swing rod (26) and a second rear swing rod (28) located in the upper part, and a second front foot rod (22) and a second rear foot rod (24) located in the lower part; A front crossbar (3) is connected between the first front swing bar and the second front swing bar, and a rear crossbar (4) is connected between the first rear swing bar and the second rear swing bar; a sawtooth bracket (5) is provided on the front crossbar or the rear crossbar; The first mounting seat is set as a plate member, and a fixing hole is set on the plate surface at the lower left corner of the first mounting seat, and the plate surface at the lower left corner is fixedly connected to the upper end of the first front foot rod by a fastener; a fixing hole is set on the plate surface at the upper right corner of the first mounting seat, and the plate surface at the upper right corner is fixedly connected to the lower end of the first rear swing rod by a fastener; a hinge hole and an arc-shaped limiting groove are set on the plate surface at the upper left corner of the first mounting seat, the plate surface at the upper left corner is hinged to the lower end of the first front swing rod, and a limiting member is connected in the arc-shaped limiting groove, and the limiting member is connected to the first front swing rod; a hinge hole and an arc-shaped limiting groove are set on the plate surface at the lower right corner of the first mounting seat, the plate surface at the lower right corner is hinged to the upper end of the first rear foot rod, and a limiting member is connected in the arc-shaped limiting groove, and the limiting member is connected to the first rear foot rod; An auxiliary mounting plate (6) is arranged on the inner side of the first mounting seat, the auxiliary mounting plate is parallel to the first mounting seat, and the first mounting seat and the auxiliary mounting plate jointly clamp the ends of the first front foot rod and the first rear swing rod in the middle and are jointly fixed thereto, the first mounting seat and the auxiliary mounting plate jointly clamp the ends of the first front swing rod and the first rear foot rod in the middle and are jointly hinged thereto; the structure of the second mounting seat is the same as that of the first mounting seat, and the auxiliary mounting plate is arranged on the inner side of the second mounting seat; A first storage board (7) is arranged between the upper parts of the first front foot rod and the first rear foot rod, and the two ends of the front side of the first storage board are respectively hinged to the first front foot rod and the second front foot rod; at the same time, support members are arranged on the first rear foot rod and the second rear foot rod, and when the first storage board is in a horizontal state, the support members are supported under the two ends of the rear side of the first storage board; the board surface of the storage board is provided with a hand hole (70) for easy grasping; and a connecting rod (71) is respectively hinged to the left and right sides of the first storage board.

2. The X-shaped multifunctional bracket according to claim 1, characterized in that: The sawtooth bracket comprises a V-shaped structural member, and the inner side edges of the V-shaped structural member which are relatively located are arranged as concave and convex sawtooth edges.

3. The X-shaped multifunctional bracket according to claim 2, characterized in that: The sawtooth bracket is rotatably hinged to the rear crossbar via a hinge, and a rotation limiting structure for limiting the rotation direction and rotation angle of the sawtooth bracket is also provided between the sawtooth bracket and the rear crossbar.

4. The X-shaped multifunctional bracket according to claim 1, characterized in that: The serrated bracket is configured as a fan-shaped structural member, one side of which is configured as a concave and convex serrated edge; two fan-shaped structural members are symmetrically arranged on the rear cross bar, and a V-shaped serrated edge area with an opening facing upward can be formed between the two fan-shaped structural members.

5. The X-shaped multifunctional bracket according to claim 4, characterized in that: The fan-shaped structural member is configured as a fan-shaped plate member, the upward side edge of the fan-shaped plate member is a concave-convex serrated edge, the center of the circle of the fan-shaped plate member is hinged to the middle of the rear cross bar via an axis, the plate surface of the fan-shaped plate member close to the arc edge has an arc-shaped rotation limit groove (51), and the rotation limit groove and the rear cross bar are connected to the rotation limit member (52); the sawtooth bracket can be relatively flipped upward to form a V-shaped sawtooth area, and the sawtooth bracket can be relatively flipped downward to be located below the rear cross bar; Alternatively, the fan-shaped structural member is configured as two parallel fan-shaped plates, the upward sides of the two fan-shaped plates are concave-convex serrated edges, and a connecting plate (53) is vertically connected between the downward sides of the two fan-shaped plates; the center of the circle of the fan-shaped structural member is hinged to the middle of the rear cross bar through an axis, the two parallel fan-shaped plates are respectively located on both sides of the rear cross bar, the plate surfaces of the two fan-shaped plates close to the arc edge are each provided with an arc-shaped rotation limit groove (51), and a rotation limit member (52) is connected between the two rotation limit grooves and the rear cross bar; the sawtooth bracket can be relatively flipped upward to form a V-shaped sawtooth area, and the sawtooth bracket can be relatively flipped downward to be located below the rear cross bar.

6. The X-shaped multifunctional bracket according to claim 1, characterized in that: A second storage board (8) is arranged below the first storage board, and the two ends of the front side of the second storage board are respectively hinged to the first front foot rod and the second front foot rod; and the lower ends of the connecting rods on both sides of the first storage board are hinged to both sides of the second storage board.

7. The X-shaped multifunctional bracket according to claim 1, characterized in that: The lower ends of the first front foot rod and the first rear foot rod are provided with relatively outwardly convex foot pads (9), which protrude in a direction away from the second front foot rod and the second rear foot rod; the lower ends of the second front foot rod and the second rear foot rod are provided with relatively outwardly convex foot pads (9), which protrude in a direction away from the first front foot rod and the first rear foot rod; in the unfolded state, the convex ends of the foot pads, the ends of the front crossbars, and the ends of the rear crossbars can be in the same plane and can form a support surface.

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