Intelligent goods shelf of refrigeration storage

Abstract

The utility model discloses an intelligent storage rack for a refrigeration house, which belongs to the technical field of refrigeration logistics equipment and comprises a first rack body, a second rack body and a third rack body. The second frame body is arranged on the first frame body in a sliding mode in the vertical direction. The second frame bodies are sequentially arranged at intervals in the vertical direction to form a plurality of storage layers, and the third frame body is provided with a supporting piece and a blocking piece; the third frame bodies are arranged on the second frame bodies in a sliding mode in the horizontal direction, and the multiple third frame bodies are arranged on each second frame body in a sliding mode. The multiple third shelf bodies on each second shelf body are sequentially arranged at intervals in the horizontal direction, the storage layers are jointly divided into multiple storage spaces through the separation pieces on the second shelf bodies, and the supporting pieces are located in the storage spaces. The intelligent goods shelf of the refrigeration house is high in universality, the storage space can be adjusted according to different goods, and waste of the storage space is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerated logistics equipment, in particular to an intelligent shelf for cold storage. Background Art

[0002] In recent years, cold chain logistics has shown a rapid development momentum and has gradually become one of the fastest growing and most dynamic fields in the logistics industry. Existing cold storage generally includes a box, a cold storage smart shelf inside the box, and a refrigerator for refrigeration. Cold storage smart shelves are used to store medicines, food and other goods that require refrigerated transportation.

[0003] Current cold storage smart shelves generally have multiple storage spaces to achieve classified placement of different goods, but these storage spaces are fixed in size and cannot accommodate different goods and quantities of goods. There is a problem that some areas within the storage space cannot be filled, resulting in a waste of storage space and poor versatility. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a cold storage intelligent shelf with strong versatility, which can adjust the storage space according to different goods to avoid waste of storage space.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cold storage intelligent shelf, comprising:

[0007] The first frame;

[0008] A second frame is slidably mounted on the first frame along a vertical direction; there are a plurality of second frames, and the plurality of second frames are sequentially spaced and arranged along a vertical direction to form a plurality of storage layers;

[0009] as well as

[0010] A third frame body is provided with a support member and a barrier member; the third frame body is slidably arranged on the second frame body along a horizontal direction;

[0011] A plurality of the third frames are slidably mounted on each of the second frames, and the plurality of the third frames on each of the second frames are arranged in sequence and spaced apart along the horizontal direction, and the barrier members between adjacent second frames separate the storage layers into a plurality of storage spaces, and the support members are located in the storage spaces.

[0012] Optionally, the support member includes a first reel and a first tape; the first reel is mounted on the third frame, and the first tape has a first reeling end connected to the first reel on the third frame and a first connecting end connected to the third frame adjacent to the second frame;

[0013] The barrier member includes a second reel and a second reel; the second reel is installed on the third frame, and the second reel has a second winding end connected to the second reel of the third frame and a second connecting end connected to any third frame on the second frame adjacent to the third frame.

[0014] Optionally, the third frame is provided with a winding groove, a first belt channel, and a second belt channel; the winding groove is connected with the outside of the third frame through the first belt channel, and the winding groove is connected with the outside of the third frame through the second belt channel, the first reel and the second reel are both located in the winding groove, the first connecting end of the first reel passes through the first belt channel and is connected to the adjacent third frame on the same second frame, and the second connecting end of the second reel passes through the second belt channel and is connected to any third frame on the adjacent second frame.

[0015] Optionally, the first connecting end is provided with a first engaging member, the second connecting end is provided with a second engaging member, and the third frame is provided with a third engaging member engaged with the first engaging member and a fourth engaging member engaged with the second engaging member.

[0016] Optionally, the support member also includes a first drive for driving the first reel to rotate to reel in or release the first tape; the barrier member also includes a second drive for driving the second reel to rotate to reel in or release the second tape; the first drive and the second drive are both mounted on the third frame.

[0017] Optionally, the support member further includes a first coil spring; the barrier member further includes a second coil spring; the first winding end of the first tape is installed on the first reel through the first coil spring, and the second winding end of the second tape is installed on the second reel through the second coil spring.

[0018] Optionally, the first frame includes a plurality of support columns; the plurality of support columns are arranged at intervals, and the second frame is located in an area enclosed by the plurality of support columns and is slidably disposed on each of the support columns.

[0019] Optionally, the second frame includes a plurality of first sliding blocks and a plurality of first beams connected end to end in sequence; the first sliding block is provided at the connection between any two of the first beams, the plurality of first sliding blocks correspond to the plurality of support columns one by one, each of the first sliding blocks is provided with a first set of holes, and each of the first sliding blocks is respectively mounted on each of the support columns through the first set of holes.

[0020] Optionally, the third frame includes a second crossbeam and a second sliding block; the second sliding blocks are provided at both ends of the second crossbeam, each of the second sliding blocks is provided with a second set of holes, and the two second sliding blocks at both ends of each second sliding block are respectively mounted on the two first crossbeams through the second set of holes.

[0021] Optionally, the support column is provided with a plurality of first scale bars, the first crossbeam is provided with a plurality of second scale bars, the plurality of first scale bars are distributed at intervals along the sliding direction of the first sliding block, and the plurality of second scale bars are distributed at intervals along the sliding direction of the second sliding block.

[0022] The beneficial effects of the utility model are as follows: the cold storage intelligent shelf can first adjust the height of the storage layer by sliding the second frame body, and then adjust the width of the storage space by sliding the third frame body, so that the size of each storage space can be adjusted according to goods of different sizes or different quantities of goods. The storage space can adapt to goods of different sizes or different quantities of goods, avoiding waste of storage space and improving the versatility of the cold storage intelligent shelf. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described in detail below based on the drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of the cold storage smart shelf;

[0025] Figure 2 This is an exploded view of the cold storage smart shelf;

[0026] Figure 3 is a schematic diagram of the connection between a first frame and a plurality of second frames;

[0027] Figure 4 It is a schematic diagram of the coordination of a plurality of third frames, a plurality of supporting members, and a plurality of blocking members;

[0028] Figure 5 It is a cross-sectional view of a structural schematic diagram of a support member and a barrier member installed on a third frame.

[0029] Description of the accompanying drawings:

[0030] 11. first frame; 12. second frame; 13. third frame; 14. storage layer; 15. support member; 16. barrier member; 17. storage space;

[0031] 111. Support column;

[0032] 121, first crossbeam; 122, first sliding block; 123, first set of holes;

[0033] 131, winding groove; 132, first belt channel; 133, second belt channel; 134, third engaging member; 135, fourth engaging member; 136, second crossbeam; 137, second sliding block; 138, second set of holes;

[0034] 151, first reel; 152, first reel; 153, first engaging member;

[0035] 161. Second reel; 162. Second reel; 163. Second engaging member. DETAILED DESCRIPTION

[0036] In order to make the technical problems solved by the utility model, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "fixed", "connected", "communicated", "abutted", "clamped" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this article, it should be understood that the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0041] In addition, it should be understood that although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0042] Unless specifically stated or defined otherwise, the term “and / or” used in the present invention includes any and all combinations of one or more of the associated listed items.

[0043] For the convenience of description, unless otherwise specified, the up and down directions mentioned below are the same as Figure 1 The up and down directions are consistent with the left and right directions mentioned below. Figure 1 The left and right directions are consistent.

[0044] like Figures 1 to 5 As shown, this embodiment provides a cold storage intelligent shelf, including a first frame 11, a plurality of second frames 12 slidably arranged on the first frame 11 along the vertical direction, and a third frame 13. The plurality of second frames 12 are arranged in sequence along the vertical direction to form a plurality of storage layers 14. The plurality of storage layers 14 are arranged in sequence from top to bottom, and the storage layers 14 are used to accommodate goods.

[0045] The third frame 13 is slidably mounted on the second frame 12 along the horizontal direction, and there are several third frames 13. When there are multiple third frames 13, a support member 15 and a barrier member 16 are installed on the third frame 13. The support member 15 and the barrier member 16 can be movably mounted on the third frame 13, or can be detachably mounted on the third frame 13. The support member 15 and the barrier member 16 can include plates of different sizes, or can include belts that can be rolled up and released. A portion of the barrier member 16 is located in the storage layer 14 so as to divide each storage layer 14 into multiple spaces, and the goods can be placed in different spaces for classified storage according to their different types. The support member 15 is at least partially located in the space for supporting the goods.

[0046] A plurality of third frames 13 are slidably mounted on each second frame 12. The plurality of third frames 13 on each second frame 12 are arranged in sequence along the horizontal direction, and the barrier 16 between two adjacent second frames 12 separates the storage layer 14 into a plurality of storage spaces 17. The plurality of storage spaces 17 are arranged in sequence along the horizontal direction. The support 15 is located in the storage space 17 and at the bottom of the storage space 17, so as to support the goods. Specifically, a portion of the barrier 16 extends in the vertical direction, so as to separate the storage layer 14 into a plurality of storage spaces 17 distributed in sequence along the horizontal direction. At least a portion of the support 15 is located between two adjacent third frames 13 installed on the same second frame 12, and at least a portion of the barrier 16 is located between the third frames 13 on the adjacent second frames 12.

[0047] When the support member 15 and the barrier member 16 include plates of different sizes, the second frame 12 and the third frame 13 can be slid. The barrier member 16 of appropriate size is selected according to the distance between the two second frames 12 adjacent to each other, and the support member 15 of appropriate size is selected according to the distance between the two third frames 13 adjacent to each other. When the support member 15 and the barrier member 16 include belts, the belts are rolled up and released according to the distance between the two second frames 12 adjacent to each other, and the belts are rolled up and released according to the distance between the two third frames 13 adjacent to each other.

[0048] In this way, the cold storage smart shelf of this embodiment can adjust the height in the vertical direction and the width in the horizontal direction of each storage space 17 by sliding the second frame 12 up and down and the third frame 13 left and right. Each storage space 17 can be adjusted according to the size and quantity of the goods, thereby improving the versatility and applicability of the cold storage smart shelf, ensuring the classified storage of goods and ensuring that each storage space 17 can be fully utilized, avoiding waste caused by excessive storage space 17.

[0049] In one embodiment, the support member 15 includes a first reel 151 and a first tape 152. The first reel 151 is mounted on the third frame 13, and the first tape 152 has a first reel end connected to the first reel 151 on the third frame 13 and a first connection end connected to the third frame 13 adjacent to the same second frame 12. Specifically, the first reel 151 can be rotatably mounted on the third frame 13, or can be fixedly mounted and use a coil spring to reel in the first tape 152, and the first tape 152 can be released using an external force. The first reel end of the first tape 152 on each third frame 13 is wound around the first reel 151 mounted on the third frame 13, and the first connection end of the first tape 152 is connected to another third frame 13 adjacent to the third frame 13 located on its right side.

[0050] The barrier 16 includes a second reel 161 and a second tape 162. The second reel 161 is mounted on the third frame 13, and the second tape 162 has a second winding end connected to the second reel 161 of the third frame 13 and a second connecting end connected to any third frame 13 on the second frame 12 adjacent to the third frame 13. Specifically, the second reel 161 can be rotatably mounted on the third frame 13, or can be fixedly mounted and use a coil spring to wind up the second tape 162, and the second tape 162 can be released by using an external force. The second winding end of the second tape 162 on each third frame 13 is wound around the second reel 161 mounted on the third frame 13, and the second connecting end of the second tape 162 is connected to the adjacent third frame 13 on the second frame 12 below.

[0051] Optionally, the third frame 13 is provided with a winding groove 131, a first belt channel 132, and a second belt channel 133. The first belt channel 132 is located on the right side of the third frame 13, and the second belt channel 133 is located on the lower side of the third frame 13. The winding groove 131 is connected to the outside of the third frame 13 through the first belt channel 132, and the winding groove 131 is connected to the outside of the third frame 13 through the second belt channel 133. The first reel 151 and the second reel 161 are both located in the winding groove 131, so that the first belt and the second belt can be stored, and the first reel 151 and the second reel 161 can be rotated. The first connecting end of the first belt 152 passes through the first belt channel 132 to connect to the adjacent third frame 13 on the same second frame 12, and the first connecting end of the first belt 152 passes through the first belt channel 132 in the horizontal direction to connect to the second frame 12 located on the right side thereof. The second connecting end of the second roll belt 162 passes through the second belt channel 133 to connect with any third frame 13 on the adjacent second frame 12, and the second connecting end of the second roll belt 162 passes through the second belt channel 133 along the vertical direction to connect with any third frame 13 on the second frame 12 located below it.

[0052] In this way, the cold storage smart shelf is divided into different storage spaces 17 by the first roll 152 and the second roll 162. By rolling up or releasing the first roll 152 and the second roll 162 of different lengths, the height adjustment in the vertical direction and the width adjustment in the horizontal direction of each storage space 17 are convenient, and there is no need to frequently replace different second frames 12, third frames 13, support members 15 and barrier members 16.

[0053] In one embodiment, the first connection end is provided with a first engaging member 153, the second connection end is provided with a second engaging member 163, and the third frame 13 is provided with a third engaging member 134 engaged with the first engaging member 153 and a fourth engaging member 135 engaged with the second engaging member 163. Specifically, the first engaging member 153 and the second engaging member 163 are both clamping blocks, and the third engaging member 134 and the second engaging member 163 are both positioning blocks provided with clamping grooves, so that the first connection end and the second connection end are respectively detachably connected to the adjacent third frame 13 by means of the clamping of the clamping block and the clamping groove.

[0054] In addition, in other embodiments, the third engaging member 134 may also be disposed on the second frame 12, and the fourth engaging member 135 may also be disposed on the second frame 12. The engaging member 153 and the second engaging member 163 may also be replaced by two Velcro tapes being attached to each other, binding with straps, adsorption of magnets, locks, etc., and the engaging member 163 and the fourth engaging member 135 may also be replaced by two Velcro tapes being attached to each other, binding with straps, adsorption of magnets, etc. In this way, the first roll 152 may be released from left to right, and the second roll 162 may be released from top to bottom, thereby forming a storage space 17 in a trapezoidal, parallelogram, or other shape.

[0055] Optionally, the support member 15 further includes a first driver for driving the first reel 151 to rotate to reel in or release the first tape 152. The barrier member 16 further includes a second driver for driving the second reel 161 to rotate to reel in or release the second tape 162. The first driver and the second driver are both mounted on the third frame 13. The first driver and the second driver are micro motors, which are used to drive the first reel 151 and the second reel 161 to rotate to achieve the reeling or releasing of the first tape 152 and the second tape 162. The tension of the micro motor to reel in the first tape 152 and the second tape 162 is used to pull the first tape 152 and the second tape 162 to be taut to achieve support for the goods.

[0056] In addition, it can be understood that the first reel 151 and the second reel 161 can also be driven manually.

[0057] Optionally, the support member 15 also includes a first coil spring. The barrier member 16 also includes a second coil spring. The first coil spring and the second coil spring are not shown in the figure. The first winding end of the first tape 152 is installed on the first reel 151 through the first coil spring, and the second winding end of the second tape 162 is installed on the second reel 161 through the second coil spring. The first coil spring and the second coil spring are used to realize automatic winding of the first tape 152 and the second tape 162. The first tape 152 and the second tape 162 can be released by external force applied to the first connecting end of the first tape 152 and the second connecting end of the second tape 162, or the first tape 152 and the second tape 162 can be released by moving the third frame 13. After the first connecting end of the first reel 152 is connected to the adjacent third frame 13 on the right and the second connecting end of the second reel 162 is connected to the third frame 13 below, the first reel 152 and the second reel 162 are pulled tight by the tension of the first coil spring and the second coil spring to support the goods.

[0058] In one embodiment, the first frame 11 includes a plurality of support columns 111. The support columns 111 are vertically arranged, and the plurality of support columns 111 are arranged at intervals. The second frame 12 is located in an area enclosed by the plurality of support columns 111 and is slidably disposed on each support column 111. Specifically, in this embodiment, the support columns 111 are square tubes, and there are four support columns 111 located at four fixed points of the plane rectangle.

[0059] Furthermore, the second frame 12 includes a plurality of first sliding blocks 122 and a plurality of first beams 121 connected end to end in sequence. A first sliding block 122 is provided at the connection between any two first beams 121, and the plurality of first sliding blocks 122 correspond to the plurality of support columns 111 one by one, and the plurality of first beams 121 correspond to the plurality of support columns 111 one by one. Each first sliding block 122 is provided with a first set of holes 123, and each first sliding block 122 is respectively sleeved on each support column 111 through the first set of holes 123. The second frame 12 slides up and down along the support column 111.

[0060] Optionally, the third frame 13 includes a second crossbeam 136 and a second sliding block 137. The second crossbeam 136 is a straight tube, and a second sliding block 137 is provided at both ends of the second crossbeam 136. Each second sliding block 137 is provided with a second set of holes 138, and the two second sliding blocks 137 at both ends of each second sliding block 137 are respectively mounted on the two first crossbeams 121 through the second set of holes 138. The four first crossbeams 121 of the second frame 12 are parallel to each other, and the second sliding blocks 137 at both ends of any second crossbeam 136 are respectively mounted on two mutually parallel first crossbeams 121 through the second set of holes 138, so that the third frame 13 can slide horizontally along the first crossbeams 121.

[0061] In one embodiment, a plurality of first scale bars are provided on the support column 111, and a plurality of second scale bars are provided on the first crossbeam 121. The plurality of first scale bars are spaced apart along the sliding direction of the first sliding block 122, and the plurality of second scale bars are spaced apart along the sliding direction of the second sliding block 137. The plurality of first scale bars are spaced apart along the vertical direction, and the plurality of second scale bars are spaced apart along the horizontal direction. The height of each storage space 17 can be accurately adjusted through the first scale bars, and the width of each storage space 17 can be accurately adjusted through the second scale bars.

[0062] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A cold storage intelligent shelf, characterized in that: include: A first frame (11); A second frame (12) is slidably mounted on the first frame (11) along a vertical direction; there are a plurality of second frames (12), and the plurality of second frames (12) are sequentially spaced apart along a vertical direction to form a plurality of storage layers (14); as well as A third frame (13) is provided with a support member (15) and a barrier member (16); the third frame (13) is slidably mounted on the second frame (12) along a horizontal direction; A plurality of the third frames (13) are slidably mounted on each of the second frames (12); the plurality of the third frames (13) on each of the second frames (12) are arranged in sequence and spaced apart in a horizontal direction; and the barrier members (16) between adjacent second frames (12) separate the storage layer (14) into a plurality of storage spaces (17); and the support member (15) is located in the storage space (17).

2. The cold storage smart shelf according to claim 1 is characterized in that: The support member (15) comprises a first reel (151) and a first reel (152); the first reel (151) is mounted on the third frame (13), and the first reel (152) has a first reeling end connected to the first reel (151) on the third frame (13) and a first connecting end connected to the third frame (13) adjacent to the second frame (12); The barrier member (16) includes a second reel (161) and a second reel (162); the second reel (161) is installed on the third frame (13), and the second reel (162) has a second winding end connected to the second reel (161) of the third frame (13) and a second connecting end connected to any third frame (13) on the second frame (12) adjacent to the third frame (13).

3. The cold storage smart shelf according to claim 2 is characterized in that: The third frame (13) is provided with a winding groove (131), a first belt channel (132), and a second belt channel (133); the winding groove (131) is connected to the outside of the third frame (13) through the first belt channel (132), and the winding groove (131) is connected to the outside of the third frame (13) through the second belt channel (133); the first reel (151) and the second reel (161) are both located in the winding groove (131); the first connecting end of the first reel (152) passes through the first belt channel (132) to be connected to the adjacent third frame (13) on the same second frame (12); the second connecting end of the second reel (162) passes through the second belt channel (133) to be connected to any of the third frames (13) on the adjacent second frame (12).

4. The cold storage smart shelf according to claim 2 is characterized in that: The first connecting end is provided with a first engaging member (153), the second connecting end is provided with a second engaging member (163), and the third frame (13) is provided with a third engaging member (134) engaged with the first engaging member (153) and a fourth engaging member (135) engaged with the second engaging member (163).

5. The cold storage intelligent shelf according to claim 2 is characterized in that: The support member (15) also includes a first driver for driving the first reel (151) to rotate so as to reel in or release the first tape (152); the barrier member (16) also includes a second driver for driving the second reel (161) to rotate so as to reel in or release the second tape (162); the first driver and the second driver are both mounted on the third frame (13).

6. The cold storage smart shelf according to claim 2, characterized in that: The support member (15) also includes a first coil spring; the barrier member (16) also includes a second coil spring; the first winding end of the first winding belt (152) is installed on the first winding shaft (151) through the first coil spring, and the second winding end of the second winding belt (162) is installed on the second winding shaft (161) through the second coil spring.

7. The cold storage smart shelf according to any one of claims 1 to 6, characterized in that: The first frame (11) comprises a plurality of support columns (111); the plurality of support columns (111) are arranged at intervals, and the second frame (12) is located in an area jointly enclosed by the plurality of support columns (111) and is slidably disposed on each of the support columns (111).

8. The cold storage smart shelf according to claim 7, characterized in that: The second frame (12) comprises a plurality of first sliding blocks (122) and a plurality of first cross beams (121) connected end to end in sequence; the first sliding block (122) is provided at the connection between any two of the first cross beams (121); the plurality of first sliding blocks (122) correspond to the plurality of support columns (111) in one-to-one correspondence; each of the first sliding blocks (122) is provided with a first set of holes (123); and each of the first sliding blocks (122) is respectively sleeved on each of the support columns (111) through the first set of holes (123).

9. The cold storage smart shelf according to claim 8, characterized in that: The third frame (13) comprises a second crossbeam (136) and a second sliding block (137); the second sliding blocks (137) are provided at both ends of the second crossbeam (136), each of the second sliding blocks (137) is provided with a second set of holes (138), and the two second sliding blocks (137) at both ends of each second sliding block (137) are respectively mounted on the two first crossbeams (121) through the second set of holes (138).

10. The cold storage intelligent shelf according to claim 9, characterized in that: The support column (111) is provided with a plurality of first scale bars, the first crossbeam (121) is provided with a plurality of second scale bars, the plurality of first scale bars are distributed at intervals along the sliding direction of the first sliding block (122), and the plurality of second scale bars are distributed at intervals along the sliding direction of the second sliding block (137).

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