Dragging type wrapping film packaging support

Abstract

The utility model discloses a dragging type wrapping film packaging support which comprises a vertical rod, a bracket assembly and a locking assembly, and a base is arranged at the bottom of the vertical rod. The bracket assembly is provided with a placing position for placing a winding film, and a first through hole is formed in the bracket assembly, so that the bracket assembly is slidably arranged on the vertical rod in a sleeving manner through the first through hole; the locking assembly is provided with a second through hole, the locking assembly is slidably arranged on the vertical rod in a sleeving mode through the second through hole, the locking assembly is movably connected with the bracket assembly, and the bracket assembly is controlled to slide or be locked on the vertical rod through the locking assembly. When the winding device is used, a winding film is placed on the bracket assembly, the winding film can slide on the support along with the bracket assembly so as to move up and down on the support, and the problem that the winding film needs to be carried manually when moving on the support, and consequently the working intensity of workers is increased is solved. The device is simple and ingenious in structural design and convenient and fast to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to winding film packaging technical field especially relates to a drag type winding film packing support. BACKGROUND

[0002] Cargo needs to be wound with film on its periphery in the transfer process, and the film winding protects the cargo from falling apart, so-called film winding is that the cargo placed on the station board is wound with film by manual operation, and multiple people are needed to operate together, which is low in packing efficiency, poor in packing effect and high in packing cost.

[0003] Therefore, the winding film support with the Chinese patent application publication number CN104691833A includes a bottom plate, a roller is arranged at the bottom of the bottom plate, a vertical rod is arranged at the top of the bottom plate, support rods are distributed on the vertical rod, support shafts are arranged on the support rods, pull rods and push rods are arranged on the side walls of the vertical rod, respectively, reinforcing rods are arranged between the pull rods, the push rods and the vertical rod, a bottom support shaft is arranged on one side of the bottom plate, and a bottom reinforcing rod is arranged between the other side of the bottom plate and the vertical rod. UTILITY MODEL CONTENT

[0004] The utility model discloses a drag type winding film packing support, and aims at solving the technical problems of the prior art.

[0005] In order to achieve the above-mentioned purpose, the technical scheme of the utility model provides a drag type winding film packing support, which comprises:

[0006] The vertical rod is provided with a base at the bottom;

[0007] The bracket assembly is provided with a mounting position for mounting the winding film, and a first through hole is arranged on the bracket assembly, so that the bracket assembly can be slidably sleeved on the vertical rod through the first through hole;

[0008] The locking assembly is provided with a second through hole, and the locking assembly is slidably sleeved on the vertical rod through the second through hole, and the locking assembly is movably connected with the bracket assembly, so that the sliding or locking of the bracket assembly on the vertical rod can be controlled through the locking assembly.

[0009] Further, the locking assembly comprises:

[0010] A locking piece has a first end and a second end, a second through hole is formed on the locking piece, the first end of the locking piece is movably connected with the bracket assembly, and the second end of the locking piece serves as a pressing part.

[0011] An elastic member is arranged between the bracket assembly and the locking piece.

[0012] The inner wall of the second through hole and the outer wall of the vertical rod are abutted and rubbed by the elastic force of the elastic member, so that the locking piece and the bracket assembly are locked on the vertical rod, and the locking piece and the bracket assembly are controlled to slide on the vertical rod by pressing the pressing part.

[0013] Further, the elastic member is a compression spring, and the compression spring is sleeved on the vertical rod; and / or

[0014] The locking assembly further comprises a connecting piece, one end of the connecting piece is movably connected with the end of the locking piece, and the other end of the connecting piece is connected with the bracket assembly.

[0015] Further, the end of the first end of the locking piece is provided with a notch, one end of the connecting piece is formed with a protruding head, and one end of the connecting piece is clamped into the notch and limited by the protruding head and the locking piece; and / or

[0016] The other end of the connecting piece is formed with a clamping head, the bracket assembly is provided with a mounting groove, and the other end of the connecting piece is mounted into the mounting groove through the clamping head.

[0017] Further, the bracket assembly comprises:

[0018] A receiving plate, the first through hole and the mounting groove are formed on the receiving plate;

[0019] A sleeve rod is connected to the upper surface of the receiving plate, and is used for arranging the wrapping film;

[0020] A limiting rod is connected to the upper surface of the receiving plate, and is used for wrapping the tensioned wrapping film;

[0021] And / or, the bracket assembly further comprises a pull rod, the pull rod is connected to the upper surface of the receiving plate, and the pull rod is used for dragging the dragging type wrapping film packaging support to wrap and package.

[0022] Further, the bracket assembly further comprises a hanging rod, the hanging rod is connected to the upper surface of the receiving plate.

[0023] Further, the receiving plate is forwardly protruding to form a first connecting part, the receiving plate is rearwardly protruding to form a second connecting part, the receiving plate is leftwardly protruding to form a third connecting part, and the receiving plate is rightwardly protruding to form a fourth connecting part.

[0024] The sleeve rod is connected with the receiving plate through the second connecting part, the limiting rod is connected with the receiving plate through the third connecting part, the pull rod is connected with the receiving plate through the first connecting part, and the hanging rod is connected with the receiving plate through the fourth connecting part.

[0025] Further, the bracket assembly further comprises a sleeve, the sleeve is arranged in the first through hole and is fixedly connected with the receiving plate, and the receiving plate is slidably sleeved on the vertical rod through the sleeve.

[0026] Further, the base has a plurality of supporting parts, and the plurality of supporting parts are circumferentially arranged at intervals.

[0027] Further, the plurality of supporting parts are all provided with universal wheels.

[0028] As can be seen from the above technical solution, the drag type wrapping film packaging support of the utility model is to slidably sleeve the bracket assembly on the vertical rod through the first through hole, slidably sleeve the locking assembly on the vertical rod through the second through hole, and movably connect the locking assembly with the bracket assembly, so as to control the sliding or locking of the bracket assembly on the vertical rod through the locking assembly, the bracket assembly has a placing position for placing the wrapping film, in use, the wrapping film is installed on the placing position of the bracket assembly, the wrapping film can slide on the vertical rod along with the bracket assembly, and the sliding or locking of the bracket assembly on the vertical rod is controlled through the locking assembly, so as to realize the height adjustment of the wrapping film on the bracket assembly, make the wrapping film operation more flexible, and use conveniently and quickly, in addition, the structure design of the utility model is simple and ingenious, the processing and assembling difficulty and production cost are low, and mass production can be realized in industry.

[0029] In order to make the technical concept and other purposes, advantages, features and effects of the utility model more clear and easy to understand, the preferred embodiments will be described in the following specific embodiments, and the detailed description will be made in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor.

[0031] Figure 1 is a structure diagram of a drag type wrapping film support provided by an embodiment of the present application;

[0032] Figure 2 is an exploded view of the structure diagram of the drag type wrapping film support provided by an embodiment of the present application;

[0033] Figure 3 is an exploded view of the structure diagram of the drag type wrapping film support provided by an embodiment of the present application;

[0034] Figure 4 is a structure diagram of a locking assembly provided by an embodiment of the present application;

[0035] Figure 5 is a structure diagram of a receiving plate provided by an embodiment of the present application.

[0036] Among the above-mentioned drawings, the following reference signs are included:

[0037] 100, vertical rod; 110, base; 111, support part; 112, universal wheel;

[0038] 200, bracket assembly; 210, receiving plate; 211, first through hole; 212, first connecting part; 213, second connecting part; 214, third connecting part; 215, fourth connecting part; 216, mounting groove; 220, sleeve rod; 230, limiting rod; 240, pull rod; 250, hanging rod; 260, pipe sleeve;

[0039] 300, locking assembly; 310, locking sheet; 311, second through hole; 312, pressing part; 313, notch; 320, compression spring; 330, connecting piece; 331, protruding head; 332, clamping head;

[0040] 400, wrapping film. DETAILED DESCRIPTION

[0041] In order for those skilled in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] Please refer to Figures 1 to 5The embodiment provides a kind of to drag type wrapping film packing support, including: vertical pole 100, bracket assembly 200 and locking assembly 300, vertical pole 100 bottom is provided with base 110;Bracket assembly 200 has the seat for placing wrapping film 400 on, and first through-hole 211 is provided on bracket assembly 200, to be slidably sleeved on the vertical pole 100 by first through-hole 211 with bracket assembly 200;Locking assembly 300 is equipped with second through-hole 311, locking assembly 300 is slidably sleeved on vertical pole 100 by second through-hole 311, and locking assembly 300 is movably connected with the bracket assembly 200, to control bracket assembly 200 sliding or locking on vertical pole 100 by locking assembly 300.

[0043] It can be seen that the utility model relates to a kind of to drag type wrapping film 400 packing support, including: vertical pole 100, bracket assembly 200 and locking assembly 300, vertical pole 100 bottom is provided with base 110;Bracket assembly 200 has the seat for placing wrapping film 400 on, and first through-hole 211 is provided on bracket assembly 200, to be slidably sleeved on the vertical pole 100 by first through-hole 211 with bracket assembly 200;Locking assembly 300 is equipped with second through-hole 311, locking assembly 300 is slidably sleeved on vertical pole 100 by second through-hole 311, and locking assembly 300 is movably connected with the bracket assembly 200, to control bracket assembly 200 sliding or locking on vertical pole 100 by locking assembly 300.In use of the utility model, wrapping film 400 is placed on bracket assembly 200, and wrapping film 400 can be slid on bracket assembly 200 and move up and down on the bracket, solve the problem that wrapping film needs to be moved on the bracket by manpower, thereby increasing the work intensity of staff.The structure of the utility model is simple and ingenious, and convenient and fast to use.

[0044] In some example embodiments, as shown in Figure 4 Locking assembly 300 includes:

[0045] Locking piece 310, locking piece 310 has first end and second end, second through-hole 311 is opened on locking piece 310, the first end of locking piece 310 is movably connected with bracket assembly 200, and the second end of locking piece 310 serves as pressing portion 312;

[0046] Elastic member, elastic member is arranged between bracket assembly 200 and locking piece 310;

[0047] Wherein, the inner wall of second through-hole 311 and the outer wall of vertical pole 100 are abutted and rubbed by the elastic force of elastic member, so that locking piece 310 and bracket assembly 200 are locked on the vertical pole 100, and locking piece 310 and bracket assembly 200 are slid on vertical pole 100 by pressing pressing portion 312.

[0048] The elastic member has an elastic force towards the locking piece 310, so as to make the hole wall of the second through hole 311 and the rod wall of the stand rod 100 abut and rub by the elastic force of the elastic member, so as to lock the relative position of the locking piece 310 and the bracket assembly 200 on the stand rod 100. The second end of the locking piece 310 is provided with a pressing part 312, so as to reduce the friction force of the hole wall of the second through hole 311 and the rod wall of the stand rod 100 by pressing the pressing part 312, and make the locking piece 310 and the bracket assembly 200 slide on the stand rod 100.

[0049] Further, as shown in Figure 4 , the elastic member is a compression spring 320, and the compression spring 320 is sleeved on the stand rod 100; and / or the locking assembly 300 further comprises a connecting piece 330, one end of the connecting piece 330 is movably connected with the end of the locking piece 310, and the other end of the connecting piece 330 is connected with the bracket assembly 200. The advantage of using the compression spring 320 is that the compression spring 320 is easy to install, low in cost and convenient for users to use.

[0050] In some example embodiments, as shown in Figure 4 , the end of the first end of the locking piece 310 is provided with a notch 313, one end of the connecting piece 330 is protrudingly extended to form a lug 331, and the one end of the connecting piece 330 is clamped into the notch 313 and limited by the abutment of the lug 331 and the locking piece 310; and / or

[0051] The other end of the connecting piece 330 is protrudingly extended to form a clamping head 332, and the bracket assembly 200 is provided with a mounting groove 216, and the other end of the connecting piece 330 is clamped into the mounting groove 216 by the clamping head 332 for installation. The end of the connecting piece 330 is provided with the lug 331 on both sides of the end, and the connection structure is more stable by such arrangement. The depth of the notch 313 is greater than the width of the connecting piece 330, the connecting piece 330 is completely clamped into the notch 313, and the lug 331 of the connecting piece 330 abuts against the upper surface of the locking piece 310, so as to prevent the locking piece 310 from being opened by the spring. The connecting piece 330 is clamped with the bracket assembly 200 by the clamping head 332, and the connection mode is simple and convenient for users to operate.

[0052] In some example embodiments, as shown in Figure 2 and Figure 3 , the bracket assembly 200 comprises:

[0053] a receiving plate 210, a first through hole 211 is provided on the receiving plate 210;

[0054] a sleeve rod 220 connected to the upper surface of the receiving plate 210, for winding the tensioned winding film 400;

[0055] A limiting rod 230 is connected to the upper surface of the receiving plate 210 for winding the tensioned wrapping film 400;

[0056] And / or, the bracket assembly further comprises a pulling rod connected to the upper surface of the receiving plate for winding and packing the wrapping film by pulling the pulling rod.

[0057] Wherein, the sleeve rod 220 is used for sleeving the wrapping film 400, and the limiting rod 230 is used for limiting the wrapping film 400 to rotate around the goods to be packed by the pulling rod 240 to pull the wrapping film 400 packing support to pack the goods to be packed. The limiting rod 230 limits the wrapping film 400 to prevent the wrapping film 400 from being wrinkled into a bundle when winding the goods, and provides a pulling force to the wrapping film 400 to tightly bind the wrapping film 400 on the goods. The connection mode of the above connection is welding or threaded connection. The advantage of welding is more stable, and the disadvantage is that it occupies space and is not easy to store when stored. The advantage of threaded connection is that it can be disassembled and stored easily, and the disadvantage is that it needs to be reassembled when used.

[0058] Further, the bracket assembly 200 further comprises a hanging rod 250 connected to the upper surface of the receiving plate 210. The connection mode of the connection is the same as above. The hanging rod 250 is used for hanging tools such as scissors, knives and the like for cutting the wrapping film 400.

[0059] Further, as shown in Figure 5 The receiving plate 210 protrudes forward to form a first connecting part 212, the receiving plate 210 protrudes backward to form a second connecting part 213, the receiving plate 210 protrudes leftward to form a third connecting part 214, and the receiving plate 210 protrudes rightward to form a fourth connecting part 215;

[0060] Wherein, the sleeve rod 220 is connected to the receiving plate 210 through the second connecting part 213, the limiting rod 230 is connected to the receiving plate 210 through the third connecting part 214, the pulling rod 240 is connected to the receiving plate 210 through the first connecting part 212, and the hanging rod 250 is connected to the receiving plate 210 through the fourth connecting part 215. The structure is simple, ingenious and easy to realize, and convenient for factory processing.

[0061] Further, as shown in Figure 2 And Figure 3 The bracket assembly 200 further comprises a sleeve 260, which is provided in the first through hole 211 and fixedly connected with the receiving plate 210, wherein the receiving plate 210 is slidably sleeved on the stand rod 100 through the sleeve 260. The sleeve 260 is connected to the receiving plate 210 by threading or welding, and the sleeve 260 makes the receiving plate 210 more easily slide on the stand rod 100, and reduces the interference of the first through hole 211 of the receiving plate 210 with the locking of the locking piece 310.

[0062] In some example embodiments, as shown in Figures 1 to 3 The base 110 has a plurality of support portions 111 which are circumferentially spaced along the base 110. The number of the plurality of support portions 111 is at least three, so that it is more stable when placed on a plane and further improves the safety and reliability of the product.

[0063] Further, as shown in Figures 1 to 3 The plurality of support portions 111 are each provided with a universal wheel 112. The installation of the universal wheel 112 facilitates the dragging of the wrapping film 400 to package support to rotate around the to-be-packaged articles to package the to-be-packaged articles. Further, the practicability and reliability of the product are improved.

[0064] In one possible embodiment, the stand 100, the bracket assembly 200 and the locking assembly 300, the stand 100 is provided with a plurality of positioning portions along the length direction thereof, and the bottom of the stand 100 is provided with a base 110; the bracket assembly 200 is provided with a positioning position for positioning the wrapping film 400, and the bracket assembly 200 is provided with a first through hole 211, so that the bracket assembly 200 is slidably sleeved on the stand 100 through the first through hole 211; the locking assembly 300 is provided with a locking portion matched with the positioning portion, and the locking assembly 300 is provided with a second through hole 311, so that the locking assembly 300 is slidably sleeved on the stand 100 through the second through hole 311, and the locking assembly 300 is movably connected with the bracket assembly 200, so that the bracket assembly 200 is controlled to slide or be locked on the stand 100 by matching the locking portion on the locking assembly 300 with the plurality of positioning portions on the stand.

[0065] Further, the plurality of positioning portions are positioning holes, and the locking portion is a locking rod, so that the bracket assembly 200 is controlled to be locked or slide on the stand 100 by inserting or removing the locking rod into or from the locking hole.

[0066] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects:

[0067] The utility model discloses a kind of towed winding film 400 packing support, comprising: vertical pole 100, bracket assembly 200 and locking assembly 300, vertical pole 100 bottom is provided with base 110;Bracket assembly 200 has the seat for placing winding film 400 on, and bracket assembly 200 is provided with first through-hole 211, to be slidably sleeved in the vertical pole 100 by first through-hole 211 with bracket assembly 200;Locking assembly 300 is provided with second through-hole 311, locking assembly 300 is slidably sleeved in vertical pole 100 by second through-hole 311, and locking assembly 300 is movably connected with the bracket assembly 200, to control bracket assembly 200 sliding or locking on vertical pole 100 by locking assembly 300.When using the utility model, place winding film 400 on bracket assembly 200, winding film 400 can slide with bracket assembly 200 on support and move up and down on support, solve, winding film needs to be moved on support by manpower, thereby increasing the working intensity of staff problem.The structure of the utility model is simple and ingenious, convenient and fast to use.

[0068] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0069] It should be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "set, connect, connected, installed" should be understood broadly, for example, it can be fixedly connected, it can also be detachably connected, it can also be in contact or integrally connected, and those skilled in the art can understand the specific meaning of the above terms in the present application according to specific circumstances.

[0070] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is based on the orientation or position relationship shown in the drawing, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0071] In the description of the present application, the terms "longitudinal", "transverse", "top", "bottom", "inner", "outer", "central", "axial", "radial", "circumferential" and the like are merely intended to facilitate the description of the present application and simplify the description based on the directional or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements involved must have a particular orientation. It is therefore not to be understood as a limitation on the present application.

[0072] In the description of the present application, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like are intended to mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the description of the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0073] In addition, it should be noted that in the description of the present application, the use of "first", "second" and the like to limit parts only facilitates the differentiation of the corresponding parts, and unless otherwise stated, the above terms have no special meaning, and therefore cannot be understood as a limitation on the scope of protection of the present application. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0074] The above is the preferred embodiment of the present application, and it should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which are also considered within the scope of protection of the present application.

Claims

1. A drag wrap film packaging support characterized by, The application relates to a wrapping film fixing device, which comprises the following parts: a vertical rod (100) provided with a base (110) at the bottom; a bracket assembly (200) provided with a fixing position for fixing a wrapping film (400) and a first through hole (211) for slidably sleeving the bracket assembly (200) on the vertical rod (100); a locking assembly (300) provided with a second through hole (311) for slidably sleeving the locking assembly (300) on the vertical rod (100) and movably connected with the bracket assembly (200) so as to control the sliding or locking of the bracket assembly (200) on the vertical rod (100) through the locking assembly (300).

2. The drag wrap film packaging support of claim 1, wherein, The locking assembly comprises: a locking sheet (310) provided with a second through hole (311) and movably connected with the bracket assembly (200) at one end and provided with a pressing part (312) at the other end; a spring arranged between the bracket assembly (200) and the locking sheet (310); wherein the inner wall of the second through hole (311) is in frictional contact with the outer wall of the vertical rod (100) through the elastic force of the spring, so that the locking sheet (310) and the bracket assembly (200) are locked on the vertical rod (100), and the sliding of the locking sheet (310) and the bracket assembly (200) on the vertical rod (100) is controlled by pressing the pressing part (312).

3. The drag wrap film packaging support of claim 2, wherein, The spring is a compression spring (320) and is sleeved on the vertical rod (100); and / or The locking assembly (300) further comprises a connecting piece (330) movably connected with one end of the locking sheet (310) and connected with the bracket assembly (200) at the other end.

4. The drag wrap film packaging support of claim 3, wherein, The end of the locking sheet (310) is provided with a notch (313), one end of the connecting piece (330) is provided with a convex head (331) and is clamped into the notch (313) and limited by the convex head (331); and / or The other end of the connecting piece (330) is provided with a clamping head (332), the bracket assembly (200) is provided with a mounting groove (216), and the other end of the connecting piece (330) is clamped into the mounting groove (216) through the clamping head (332) for mounting.

5. The drag wrap film packaging support of claim 4, wherein, The bracket assembly comprises: a receiving plate (210) provided with the first through hole (211) and the mounting groove (216); and a bracket (220) movably connected with the receiving plate (210). A sleeve rod (220) is connected to the upper surface of the receiving plate (210) for placing the wrapping film (400); A limiting rod (230) is connected to the upper surface of the receiving plate (210) for wrapping the tensioned wrapping film (400); And / or, the bracket assembly further comprises a pull rod (240) connected to the upper surface of the receiving plate (210) for wrapping and packing by dragging the drag type wrapping film packing support through the pull rod (240).

6. The drag wrap film packaging support of claim 5, wherein, The bracket assembly (200) further comprises a hanging rod (250) connected to the upper surface of the receiving plate (210).

7. The drag wrap film packaging support of claim 6, wherein, The receiving plate (210) is extended forward to form a first connecting part (212), extended backward to form a second connecting part (213), extended leftward to form a third connecting part (214), and extended rightward to form a fourth connecting part (215). Wherein, the sleeve rod (220) is connected to the receiving plate (210) through the second connecting part (213), the limiting rod (230) is connected to the receiving plate (210) through the third connecting part (214), the pull rod (240) is connected to the receiving plate (210) through the first connecting part (212), and the hanging rod (250) is connected to the receiving plate (210) through the fourth connecting part (215).

8. The drag wrap film packaging support of claim 5, wherein, The bracket assembly (200) further comprises a sleeve pipe (260) penetrating the first through hole (211) and fixedly connected with the receiving plate (210), wherein the receiving plate (210) is slidably sleeved on the vertical rod (100) through the sleeve pipe (260).

9. The drag wrap film packaging support of any of claims 6-8, wherein, The base (110) has a plurality of support parts (111) circumferentially spaced apart.

10. The drag wrap film packaging support of claim 9, wherein, Each of the plurality of support parts (111) is provided with a universal wheel (112).

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