Bottom support of packaging box

Abstract

The utility model discloses a bottom support of a packaging box, and relates to the technical field of bottom supports, the bottom support comprises a carrying frame, a placing groove is arranged in the carrying frame, four universal joint seats are arranged at the bottom of the carrying frame, and roller seats are movably arranged at the lower ends of the four universal joint seats; the device further comprises binding clamping blocks arranged in the containing groove, the number of the binding clamping blocks is two, and reset springs are arranged at the connecting positions of the two binding clamping blocks and the inner wall of the containing groove. And the folding grooves are integrally formed in the upper end position of the carrying frame, the number of the folding grooves is two, traction rods are arranged in the two folding grooves, and telescopic inner cavities are formed in the two traction rods. The problems that a single-caliber bottom support is poor in binding degree to a packaging box, the packaging box is inconvenient to move through the bottom support, and the applicability of the bottom support is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bottom supports, in particular to a bottom support of a packaging box. Background Art

[0002] The bottom pallet is the bottom supporting structure of the packaging box, which can prevent the bottom of the packaging box from being damaged during transportation.

[0003] For example, the announcement number is: CN212830055U (named as a bottom support for a packaging box), which includes a bottom support main frame, a lifting device is installed inside the bottom support main frame, a lifting seat is fixed to the power output end of the lifting device, and an inclined box-loading device is provided on one side of the bottom support main frame, the inclined box-loading device includes an inclined plate, the inclined plate and the bottom support main frame are connected by a hinge, a groove is provided on the upper surface of the inclined plate, rollers are installed side by side inside the groove through rollers, a winch is installed in front of the upper surface of the bottom support main frame, and the winch is connected to the inclined box-loading device by a wire rope, the lifting device includes a rotating shaft, there are two rotating shafts, and the two rotating shafts are arranged side by side, and the rotating shafts are rotatably connected to the bottom support main frame through bearings, two sides of the rotating shaft are provided with bidirectional threaded portions, and symmetrical nuts are threadedly connected on the bidirectional threaded portions with their midpoints as the symmetry axes, and an inclined box-loading device is provided, which can first push the packaging box onto the inclined plate, and then push the packaging box on the inclined plate, and the packaging box and the roller generate rolling friction to facilitate the loading of the packaging box.

[0004] Although the above-mentioned bottom bracket can assist in loading packaging boxes, the sizes of packaging boxes are mostly different. The bottom bracket with a single diameter does not have a good restraint on the packaging box, and it is inconvenient to move the packaging box with the bottom bracket, resulting in poor applicability of the bottom bracket. For this reason, we provide a bottom bracket for packaging boxes. Utility Model Content

[0005] The purpose of the present utility model is to provide a base for a packaging box, so as to solve the problem proposed in the above background technology that although the existing base can assist in loading the packaging box, the sizes of the packaging boxes are mostly different, the base of a single caliber has a poor degree of restraint on the packaging box, and it is inconvenient to move the packaging box with the base, resulting in poor applicability of the base.

[0006] To achieve the above object, the present invention provides the following technical solution: a bottom support for a packaging box, comprising a supporting frame, a placement slot provided inside the supporting frame, four universal joints provided at the bottom of the supporting frame, and roller seats movably provided at the lower ends of the four universal joints;

[0007] Also includes:

[0008] A restraining card block is arranged inside the placement slot, two restraining card blocks are provided, and return springs are provided at the connection positions of the two restraining card blocks and the inner wall of the placement slot;

[0009] A folding groove is integrally formed and arranged at the upper end of the supporting frame. Two folding grooves are provided, and a traction rod is provided inside each of the two folding grooves. A telescopic inner cavity is provided inside each of the two traction rods, and an extension rod is provided inside each of the two telescopic inner cavities.

[0010] The storage slot is arranged on one side of the two folding slots. The storage slot and the supporting frame are an integrated structure, and a handle rod is arranged inside the storage slot.

[0011] Preferably, assembly holes are provided inside the two extension rods, and the handle rod is connected to the two extension rods through the two assembly holes.

[0012] Preferably, both ends of the handle rod are provided with threaded ends, and limiting nuts are installed on the two threaded ends, and the size of the limiting nuts is larger than the diameter of the threaded ends.

[0013] Preferably, one end of the extension rod is integrally formed with an anti-slip end cap, an extension perforation is provided at the movable connection position between the extension rod and the telescopic inner cavity, the extension perforation is connected to the interior of the telescopic inner cavity, and the size of the anti-slip end cap is larger than the caliber of the extension perforation.

[0014] Preferably, one end of the traction rod is integrally formed with two connecting shafts, and connecting shaft grooves are provided at the connecting positions of the two connecting shafts and the folding groove, and the two connecting shaft grooves and the folding groove are an integral structure.

[0015] Preferably, the traction rod is rotatably connected to the two connecting shaft grooves on the folding groove through two connecting shafts at one end.

[0016] Preferably, rollers are provided inside the four roller seats, and the connecting shafts at both ends of the rollers are movably connected to the roller seats through bearings.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The utility model rotates and removes the two traction rods from the inside of the folding groove, and then removes the handle rod from the inside of the storage groove. The extension rod in the traction rod can be stretched and moved, and the handle rod is connected with the assembly connection holes inside the two extension rods. After the through-connection is completed, the two limit nuts are installed at the positions of the two threaded ends to fix the handle rod to the two extension rods. Finally, the staff pulls the handle rod to drive the bottom bracket to carry the packaging box for transportation. The structure is simple and easy to assemble and use.

[0019] 2. Place the packaging boxes to be transported in the placement slot, and use two return springs to drive two binding blocks to clamp the placed packaging boxes. The telescopic range of the return springs can meet the bottom support requirements of packaging boxes of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the bottom support structure of the packaging box of the present utility model;

[0021] Figure 2 This is a bottom view of the bottom support structure of the packaging box of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the bottom support of the packaging box of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of the traction rod of the present utility model;

[0024] In the figure: 1. Support frame; 2. Roller seat; 3. Placement slot; 4. Constraint block; 5. Return spring; 6. Folding slot; 7. Tow rod; 8. Storage slot; 9. Handle bar; 10. Limit nut; 11. Universal joint; 12. Roller; 13. Connecting shaft slot; 14. Threaded end; 15. Telescopic inner cavity; 16. Extension rod; 17. Connecting shaft; 18. Anti-slip end; 19. Extension through hole; 20. Assembly connection hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-4 The present invention provides an embodiment of a bottom support for a packaging box, comprising a supporting frame 1, a placement slot 3 being provided inside the supporting frame 1, four universal joints 11 being provided at the bottom of the supporting frame 1, and roller seats 2 being movably provided at the lower ends of the four universal joints 11;

[0027] Also includes:

[0028] A restraining block 4 is provided inside the placement slot 3. Two restraining blocks 4 are provided, and return springs 5 ​​are provided at the connection positions between the two restraining blocks 4 and the inner wall of the placement slot 3.

[0029] A folding groove 6 is integrally formed and arranged at the upper end of the supporting frame 1. Two folding grooves 6 are provided, and a traction rod 7 is provided inside each of the two folding grooves 6. A telescopic inner cavity 15 is provided inside each of the two traction rods 7. An extension rod 16 is provided inside each of the two telescopic inner cavities 15.

[0030] The storage slot 8 is provided on one side of the two folding slots 6 . The storage slot 8 and the supporting frame 1 are an integral structure, and a handle bar 9 is provided inside the storage slot 8 .

[0031] When in use, the two traction rods are rotated and taken out from the inside of the folding groove, and then the handle rod is taken out from the inside of the storage groove. The extension rod in the traction rod can be stretched and moved, and the handle rod is connected with the assembly holes inside the two extension rods. After the connection is completed, the two limit nuts are installed to the positions of the two threaded ends to fix the handle rod to the two extension rods. Finally, the staff pulls the handle rod to drive the bottom tray to carry the packaging box for transportation.

[0032] See also Figure 4 The two extension rods 16 are internally provided with assembly holes 20, and the handle rod 9 is connected to the two extension rods 16 through the two assembly holes 20. The assembly holes 20 provided inside the two extension rods 16 serve to facilitate the assembly of the handle rod 9.

[0033] See also Figure 3 Both ends of the handle rod 9 are provided with threaded ends 14, and limiting nuts 10 are installed on the two threaded ends 14. The size of the limiting nuts 10 is larger than the diameter of the threaded ends 14. The threaded ends 14 provided at both ends of the handle rod 9 serve to facilitate the installation of the limiting nuts 10.

[0034] See also Figure 3 and Figure 4 One end of the extension rod 16 is integrally formed with an anti-slip end cap 18, and an extension through-hole 19 is provided at the movable connection position between the extension rod 16 and the telescopic inner cavity 15. The extension through-hole 19 is connected to the interior of the telescopic inner cavity 15, and the size of the anti-slip end cap 18 is larger than the diameter of the extension through-hole 19. The anti-slip end cap 18 integrally formed at one end of the extension rod 16 serves to prevent the extension rod 16 from escaping from the telescopic inner cavity 15.

[0035] See also Figure 3 and Figure 4 One end of the traction rod 7 is integrally formed with two connecting shafts 17, and a connecting shaft groove 13 is provided at the connecting position of the two connecting shafts 17 and the folding groove 6. The two connecting shaft grooves 13 and the folding groove 6 are an integrated structure. The two connecting shafts 17 integrally formed at one end of the traction rod 7 play a role in assisting the folding and rotation of the traction rod 7.

[0036] See also Figure 3 and Figure 4 The traction rod 7 is rotatably connected to the two connecting shaft grooves 13 on the folding groove 6 through two connecting shafts 17 at one end.

[0037] See also Figure 2The four roller seats 2 are internally provided with rollers 12, and the connecting shafts at both ends of the rollers 12 are movably connected to the roller seats 2 through bearings. The rollers 12 arranged inside the four roller seats 2 play a role in assisting the bottom support to ground.

[0038] Working principle: When in use, the packaging box to be transported is placed in the placement slot 3, and the two return springs 5 ​​drive the two binding blocks 4 to bind and clamp the placed packaging box. The telescopic range of the return spring 5 can meet the bottom support processing of packaging boxes of different sizes. When the packaging box needs to be transported, the two traction rods 7 are rotated and taken out from the inside of the folding slot 6, and then the handle rod 9 is taken out from the inside of the storage slot 8. The extension rod 16 in the traction rod 7 can be stretched and moved, and the handle rod 9 is connected with the assembly connection hole 20 inside the two extension rods 16. After the through connection is completed, the two limit nuts 10 are installed to the position of the two threaded ends 14, so as to fix the handle rod 9 to the two extension rods 16. Finally, the staff pulls the handle rod 9 to drive the bottom support to carry the packaging box for transportation, thereby completing the use of the bottom support of the packaging box.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A bottom support for a packaging box, comprising a supporting frame (1), a placement slot (3) provided inside the supporting frame (1), four universal joints (11) provided at the bottom of the supporting frame (1), and roller seats (2) movably provided at the lower ends of the four universal joints (11); Its characteristics are: Also includes: A restraining card block (4) is arranged inside the placement groove (3), two restraining card blocks (4) are provided, and a return spring (5) is provided at the connection position between the two restraining card blocks (4) and the inner wall of the placement groove (3); A folding groove (6) is integrally formed and arranged at the upper end of the supporting frame (1), two folding grooves (6) are provided, and a traction rod (7) is provided inside each of the two folding grooves (6), a telescopic inner cavity (15) is provided inside each of the two traction rods (7), and an extension rod (16) is provided inside each of the two telescopic inner cavities (15); The storage groove (8) is arranged on one side of the two folding grooves (6). The storage groove (8) and the supporting frame (1) are an integrated structure, and a handle bar (9) is arranged inside the storage groove (8).

2. The bottom support of a packaging box according to claim 1, characterized in that: The two extension rods (16) are provided with assembly holes (20) inside, and the handle rod (9) is connected to the two extension rods (16) through the two assembly holes (20).

3. The bottom support of a packaging box according to claim 2, characterized in that: Both ends of the handle bar (9) are provided with threaded ends (14), and limiting nuts (10) are installed on the two threaded ends (14). The size of the limiting nuts (10) is larger than the diameter of the threaded ends (14).

4. The bottom support of a packaging box according to claim 1, characterized in that: One end of the extension rod (16) is integrally formed with an anti-slip end cap (18); an extension through-hole (19) is provided at a movable connection position between the extension rod (16) and the telescopic inner cavity (15); the extension through-hole (19) is connected to the interior of the telescopic inner cavity (15); and the size of the anti-slip end cap (18) is larger than the diameter of the extension through-hole (19).

5. The bottom support of a packaging box according to claim 1, characterized in that: One end of the traction rod (7) is integrally formed with two connecting shafts (17), and a connecting shaft groove (13) is provided at the connection position between the two connecting shafts (17) and the folding groove (6). The two connecting shaft grooves (13) and the folding groove (6) are an integral structure.

6. The bottom support of a packaging box according to claim 5, characterized in that: The traction rod (7) is rotatably connected to the two connecting shaft grooves (13) on the folding groove (6) via two connecting shafts (17) at one end.

7. The bottom support of a packaging box according to claim 1, characterized in that: Rollers (12) are arranged inside the four roller seats (2), and connecting shafts at both ends of the rollers (12) are movably connected to the roller seats (2) through bearings.

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