CN220721118U

CN220721118U - Handcart storage rack

Info

Publication number: CN220721118U
Application number: CN202322509482.0U
Authority: CN
Inventors: 张建梅; 季通洋; 徐卓立; 朱震卿; 岳坤; 杨大伟
Original assignee: Shangrao Kutai Kitchen Products Co ltd
Current assignee: Shangrao Kutai Kitchen Products Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-05
Anticipated expiration: 2033-09-15

Abstract

The utility model discloses a trolley commodity shelf which comprises a plurality of upright posts, a bottom layer box, a plurality of middle layer boxes, a top layer box and a U-shaped frame, wherein the bottom layer box is fixedly connected with the lower ends of the corresponding upright posts, the U-shaped frame is fixedly connected with the upper ends of the corresponding upright posts, the bottom layer box and the U-shaped frame form a main body frame structure, the middle layer boxes are distributed in a cavity of the main body frame structure at intervals from top to bottom, the middle layer boxes are fixedly arranged on the corresponding upright posts, or the middle layer boxes are slidably arranged on the upright posts through sliding components, the top layer box is slidably arranged in the U-shaped frame through sliding rails, and rollers are arranged at the bottom of the bottom layer box. When the articles on the middle layer box below the top layer box are taken and placed, the top layer box is pulled out in a sliding way, so that convenience in taking and placing the articles on the middle layer box below the top layer box is ensured; the middle layer box is slidably mounted in the cavity of the main body frame structure, convenience in taking and placing articles on the lower middle layer box or the bottom layer box is guaranteed, and the user experience effect is good.

Description

Handcart storage rack

Technical Field

The utility model relates to the technical field of storage racks, in particular to a trolley storage rack.

Background

The trolley is a manually pushed and pulled carrying vehicle, and is an ancestor of all vehicles. While cart material handling technology is continually evolving, carts continue to be used as an integral handling tool. The handcart has wide application in production and life because of low cost, simple maintenance, convenient operation and light dead weight, can work in places where motor vehicles are inconvenient to use, and is very convenient when carrying lighter articles in short distance.

Many kitchen articles are available and are messy, for example: the kitchen ware articles are needed to be taken out of the kitchen cabinet and put on the table top when cooking, and the kitchen ware articles occupy a large table top space, so that the kitchen ware articles are inconvenient to operate and affect cooking efficiency. The kitchen commodity shelf is the storage rack that is used for accomodating kitchen supplies, and at present, the kitchen commodity shelf that adopts generally is hanging and plane placing type two kinds, and wherein hanging commodity shelf is applicable to placing the kitchen utensils and appliances that the volume is less such as paring knife, scissors, slice, and plane placing type commodity shelf is applicable to placing basket, kitchen utensils and appliances that the volume is great such as basin. The prior plane placement type commodity shelf mostly comprises a frame main body and a plurality of commodity placing plates which are fixedly arranged in the cavity of the frame main body from top to bottom at intervals. In order to improve the use flexibility of the planar commodity shelf, a trolley commodity shelf appears on the market, namely, the roller is arranged at the bottom of the traditional planar placement commodity shelf, so that the movement flexibility of the commodity shelf is improved.

The problem that current handcart supporter exists lies in: the plurality of storage plates are fixedly arranged in the cavity of the frame main body, and when the kitchen ware articles on the storage plates are taken out, the kitchen ware articles need to be plugged into or taken out from one side of the frame main body, so that the operation is inconvenient, and particularly, the taking and placing of the kitchen ware articles with larger volume are more inconvenient. Therefore, the utility model provides a trolley storage rack for solving the technical problems.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a trolley commodity shelf, wherein a top box is slidably arranged in a U-shaped frame, so that when a commodity on a middle box below the top box is taken and placed, the top box can be slidably pulled out, and convenience in taking and placing the commodity on the middle box below the top box is ensured; similarly, the middle layer box can be slidably arranged in the cavity of the main body frame structure, so that convenience in taking and placing articles on the middle layer box or the bottom layer box at the lower side is ensured, and the user experience effect is good; the whole layout design is exquisite, the structure is compact, the practicality is strong, can all use in scenes such as kitchen, dining room, living room.

For realizing the above-mentioned purpose, including a plurality of stands, bottom box, a plurality of middle level box, top layer box and U type frame, the bottom box correspond the below that is located U type frame, bottom box and the stand lower extreme fixed connection that corresponds, U type frame and the stand upper end fixed connection that corresponds, a plurality of stands, bottom box and U type frame constitute main body frame structure, a plurality of middle level box from the top down interval distribution in main body frame structure's cavity inside, the middle level box set firmly on the stand that corresponds, perhaps the middle level box pass through sliding component slidable mounting on the stand, the top layer box through a pair of slide rail slidable mounting in U type frame inside, bottom box bottom install the gyro wheel.

According to the trolley commodity shelf, the top layer box is slidably arranged in the U-shaped frame, so that when an article on the middle layer box below the top layer box is taken and placed, the top layer box can be slidably pulled out, and convenience in taking and placing the article on the middle layer box below the top layer box is ensured; similarly, the middle layer box can be slidably arranged in the cavity of the main body frame structure, so that convenience in taking and placing articles on the middle layer box or the bottom layer box at the lower side is ensured, and the user experience effect is good; the whole layout design is exquisite, the structure is compact, the practicality is strong, can all use in scenes such as kitchen, dining room, living room.

The bottom layer box, the middle layer box and the top layer box all comprise a rectangular frame and a bottom plate, the rectangular frame is formed by splicing four section plates through first corner fittings and screw fixation, and the outer periphery of the bottom plate is inserted and installed in an inserting groove at the lower end of the inner peripheral side surface of the rectangular frame. The bottom layer box, the middle layer box and the top layer box have simple structural design and high preparation and implementation feasibility.

The further preferable technical scheme is that the four upright posts are provided, the cross sections of the upright posts are of L-shaped structures, the top angles of the bottom layer boxes are fixedly connected with the lower ends of the corresponding upright posts, and the top angles and the end parts of the U-shaped frames are fixedly connected with the upper ends of the corresponding upright posts; the top angle of the middle layer box is fixedly arranged on the corresponding upright post, or the sliding component comprises a pair of supporting plates and a pair of sliding rails II, the pair of supporting plates are correspondingly and fixedly arranged on the inner side of the upright post, and the middle layer box is slidably arranged on the supporting plate on the corresponding side through the pair of sliding rails II. The cross section of the upright post is of an L-shaped structure, the vertex angle of the bottom layer box is correspondingly and fixedly arranged in the corner groove at the lower end of the upright post, the vertex angle and the end part of the U-shaped frame are correspondingly and fixedly arranged in the corner groove at the upper end of the upright post, and the vertex angle of the middle layer box is fixedly arranged in the corner groove at the middle section of the upright post, so that the positioning accuracy and the fixed connection stability during assembly between the bottom layer box and the upright post are ensured; the sliding component is simple in structural design, and the pair of supporting plates are correspondingly and fixedly arranged on the inner sides of the stand columns, so that the overall stability of the main body frame structure is improved, and the convenience of sliding installation of the middle-layer box on the stand columns is improved.

Further preferable technical scheme is that a plurality of first mounting holes are formed in the upright post at intervals along the length direction; the outer sides of a group of opposite profile plates of the rectangular frame on the top layer box are respectively provided with a third mounting hole, and the top layer box is fixedly arranged on the movable rail on the first sliding rail through screws penetrating through the third mounting holes;

two ends of a group of opposite profile plates of the rectangular frame on the bottom layer box are respectively provided with a second mounting hole penetrating through the plate body vertically, and the bottom layer box is fixedly connected with a first corresponding mounting hole on the upright post through a screw penetrating through the second mounting hole;

two ends of a group of opposite profile plates of the rectangular frame on the middle layer box are respectively provided with a second mounting hole penetrating through the plate body vertically, and the middle layer box is fixedly connected with a first corresponding mounting hole on the upright post through a screw penetrating through the second mounting hole;

or, the outer sides of a group of opposite section plates positioned on the rectangular frame of the middle layer box are respectively provided with a third mounting hole, and the middle layer box is fixedly arranged on the movable rail on the second sliding rail through screws penetrating through the third mounting holes. The middle layer box and the bottom layer box are fixed on the upright posts in a simple manner, and the overall stability of the main body frame structure is ensured; the top layer box or the middle layer box is simply arranged on the movable rail, and the overall assembly efficiency of the trolley commodity shelf is ensured.

Further preferable technical scheme is that a plurality of separation components for dividing the internal space into a plurality of space containing units are respectively arranged on the bottom layer box, the middle layer box and the top layer box. Make bottom box, middle level box and top layer box can sort and accomodate different kinds of article, get when improving the use and put the convenience.

Further preferred technical scheme still, the separation subassembly include division board and two joint, the joint on have slot and opening decurrent draw-in groove, division board both ends respectively inside the slot of interference grafting on the joint, division board both ends install in the relative section bar of a set of on the rectangle frame through the draw-in groove joint on the joint respectively. The partition assembly is installed or detached on the rectangular frame in a simple mode, the number and the positions of the partition assemblies can be flexibly selected according to the use requirements of users, and the use convenience of the handcart storage rack is improved.

The further preferable technical scheme is that the U-shaped frame is formed by fixedly splicing three section plates through a second corner brace and a screw, and two ends of the U-shaped frame are fixedly connected with a first mounting hole on a corresponding upright post through the third corner brace and the screw respectively. The U-shaped frame and the fixing mode on the main body frame structure are simple, and the overall stability of the main body frame structure is ensured.

Further preferable technical scheme is that the upper ends of the second corner brace and the third corner brace are respectively provided with an L-shaped eave body positioned on the upper end face of the corresponding upright post. The L-shaped eave body plays a role in decoration on the upper end face of the upright post, so that the overall attractive effect of the handcart storage rack is improved.

Further preferred technical scheme still, the top layer box along the degree of depth of slip direction < U type frame, a pair of slide rail a pair of corresponding set firmly in the both sides arm of U type frame near open-ended one end, the top layer box accomodates in the inside time of U type frame, forms between the bottom of U type frame and the top layer box and dodges the space. When the article with larger volume is placed on the middle layer box below the top layer box, the upper end of the article can pass through the avoiding space, so that the use flexibility of the handcart storage rack is further improved.

The further preferable technical scheme is that the upright post, the bottom plate, the section bar plate on the rectangular frame, the section bar plate on the U-shaped frame and the supporting plate are all aluminum materials, and the clamping joint is a plastic injection molding piece; the roller is a universal wheel with a brake pad. The rigid parts of the trolley commodity shelf are all made of aluminum materials, so that the overall corrosion resistance is remarkably improved; the universal wheel has improved the removal flexibility of handcart supporter to can brake the universal wheel through the brake block, satisfy steady placing requirement.

The utility model has the advantages and beneficial effects that:

1. according to the trolley commodity shelf, the top layer box is slidably arranged in the U-shaped frame, so that when an article on the middle layer box below the top layer box is taken and placed, the top layer box can be slidably pulled out, and convenience in taking and placing the article on the middle layer box below the top layer box is ensured; similarly, the middle layer box can be slidably arranged in the cavity of the main body frame structure, so that convenience in taking and placing articles on the middle layer box or the bottom layer box at the lower side is ensured, and the user experience effect is good; the whole layout design is exquisite, the structure is compact, the practicality is strong, can all use in scenes such as kitchen, dining room, living room.

2. The cross section of the upright post is of an L-shaped structure, the vertex angle of the bottom layer box is correspondingly and fixedly arranged in the corner groove at the lower end of the upright post, the vertex angle and the end part of the U-shaped frame are correspondingly and fixedly arranged in the corner groove at the upper end of the upright post, and the vertex angle of the middle layer box is fixedly arranged in the corner groove at the middle section of the upright post, so that the positioning accuracy and the fixed connection stability during assembly between the bottom layer box and the upright post are ensured; the sliding component is simple in structural design, and the pair of supporting plates are correspondingly and fixedly arranged on the inner sides of the stand columns, so that the overall stability of the main body frame structure is improved, and the convenience of sliding installation of the middle-layer box on the stand columns is improved.

3. The middle layer box and the bottom layer box are fixed on the upright posts in a simple manner, and the overall stability of the main body frame structure is ensured; the top layer box or the middle layer box is simply arranged on the movable rail, and the overall assembly efficiency of the trolley commodity shelf is ensured.

4. And a plurality of separation components for dividing the internal space into a plurality of space containing units are respectively arranged on the bottom layer box, the middle layer box and the top layer box. Make bottom box, middle level box and top layer box can sort and accomodate different kinds of article, get when improving the use and put the convenience.

5. The partition assembly is installed or detached on the rectangular frame in a simple mode, the number and the positions of the partition assemblies can be flexibly selected according to the use requirements of users, and the use convenience of the handcart storage rack is improved.

6. The rigid parts of the trolley commodity shelf are all made of aluminum materials, so that the overall corrosion resistance is remarkably improved; the universal wheel has improved the removal flexibility of handcart supporter to can brake the universal wheel through the brake block, satisfy steady placing requirement.

Drawings

FIG. 1 is a top perspective view of one end of a cart storage rack in accordance with the present utility model;

FIG. 2 is a top view of an end of a cart storage rack according to the present utility model;

FIG. 3 is a top perspective view of the other end of a cart storage rack in accordance with the present utility model;

FIG. 4 is a perspective view of the bottom cartridge;

FIG. 5 is a perspective view of the middle cartridge;

FIG. 6 is a perspective view of the top cartridge;

FIG. 7 is a perspective view of a U-shaped frame;

FIG. 8 is a perspective view of a divider assembly;

FIG. 9 is a perspective view of the middle cartridge;

fig. 10 is a partial enlarged view at H in fig. 9.

In the figure: 1. a column; 2. a bottom layer box; 3. a middle layer box; 4. a top layer box; 5. a partition assembly; 6. a U-shaped frame; 7. a first slide rail; 8. a roller; 1-1, a first mounting hole; 5-1, a partition plate; 5-2, a clamping joint; 5-2a, slots; 5-2b, a clamping groove; 6-1, avoiding space; A. rectangular frames; a-1, a second mounting hole; a-2, a mounting hole III; a-3, a splicing groove; B. a bottom plate; C. the first corner brace is arranged; D. the second corner brace is arranged; E. the third corner brace; F. an L-shaped eave body.

Detailed Description

The following describes the embodiments of the present utility model further with reference to the drawings and examples. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

Example 1

As shown in fig. 1-10, the utility model relates to a trolley commodity shelf, which comprises a plurality of upright posts 1, a bottom layer box 2, a plurality of middle layer boxes 3, a top layer box 4 and a U-shaped frame 6, wherein the bottom layer box 2 is correspondingly positioned below the U-shaped frame 6, the bottom layer box 2 is fixedly connected with the lower ends of the corresponding upright posts 1, the U-shaped frame 6 is fixedly connected with the upper ends of the corresponding upright posts 1, the bottom layer box 2 and the U-shaped frame 6 form a main body frame structure, the middle layer boxes 3 are distributed in the cavity of the main body frame structure at intervals from top to bottom, the middle layer boxes 3 are fixedly arranged on the corresponding upright posts 1, the top layer box 4 is slidably arranged in the U-shaped frame 6 through a pair of sliding rails 7, and rollers 8 are arranged at the bottom of the bottom layer box 2.

Preferably, the bottom layer box 2, the middle layer box 3 and the top layer box 4 all comprise a rectangular frame A and a bottom plate B, the rectangular frame A is formed by fixedly splicing four section plates through a corner bracket C and screws, and the outer periphery of the bottom plate B is inserted and installed in an insertion groove A-3 at the lower end of the inner peripheral side surface of the rectangular frame A.

Further preferably, the number of the upright posts 1 is four, the cross section of the upright post 1 is of an L-shaped structure, the top angle of the bottom layer box 2 is fixedly connected with the lower end of the corresponding upright post 1, the top angle and the end part of the U-shaped frame 6 are fixedly connected with the upper end of the corresponding upright post 1, and the top angle of the middle layer box 3 is fixedly arranged on the corresponding upright post 1.

Further preferably, a plurality of mounting holes 1-1 are formed in the upright post 1 at intervals along the length direction; the outer sides of a group of opposite profile plates of the rectangular frame A on the top box 4 are respectively provided with a mounting hole A-2, and the top box 4 is fixedly arranged on a movable rail on the first slide rail 7 through screws penetrating through the inside of the mounting holes A-2;

two ends of a group of opposite section plates of the rectangular frame A on the bottom layer box 2 are respectively provided with a mounting hole II A-1 which vertically penetrates through the plate body, and the bottom layer box 2 is fixedly connected with a corresponding mounting hole I1-1 on the upright post 1 through a screw penetrating through the mounting hole II A-1;

the two ends of a group of opposite section plates of the rectangular frame A on the middle layer box 3 are respectively provided with a mounting hole II A-1 which vertically penetrates through the plate body, and the middle layer box 3 is fixedly connected with a corresponding mounting hole I1-1 on the upright post 1 through a screw penetrating through the mounting hole II A-1.

It is further preferable that a plurality of partition members 5 dividing the inner space into a plurality of space receiving units are provided on the bottom case 2, the middle case 3 and the top case 4, respectively.

Still preferably, the separation assembly 5 comprises a separation plate 5-1 and two clamping joints 5-2, the clamping joints 5-2 are provided with slots 5-2a and clamping grooves 5-2b with downward openings, two ends of the separation plate 5-1 are respectively inserted into the slots 5-2a of the clamping joints 5-2 in an interference manner, and two ends of the separation plate 5-1 are respectively installed on a group of opposite profile plates on the rectangular frame A in a clamping manner through the clamping grooves 5-2b of the clamping joints 5-2.

Still preferably, the U-shaped frame 6 is formed by fixedly splicing three section plates through a second angle code D and a screw, and two ends of the U-shaped frame 6 are fixedly connected with the first mounting hole 1-1 on the corresponding upright post 1 through a third angle code E and the screw respectively.

Still more preferably, the upper ends of the second corner brace D and the third corner brace E are respectively provided with an L-shaped eave body F positioned on the upper end face of the corresponding upright post 1.

Still preferably, the length of the top box 4 along the sliding direction is smaller than the depth of the U-shaped frame 6, a pair of sliding rails 7 are correspondingly and fixedly arranged at one end of two side arms of the U-shaped frame 6, which is close to the opening, and when the top box 4 is stored in the U-shaped frame 6, an avoidance space 6-1 is formed between the bottom of the U-shaped frame 6 and the top box 4.

Still preferably, the upright post 1, the bottom plate B, the section bar plate on the rectangular frame A and the section bar plate on the U-shaped frame 6 are all aluminum materials, and the clamping joint 5-2 is a plastic injection molding piece; the roller 8 is a universal wheel with a brake pad.

According to the trolley commodity shelf, the top layer box is slidably arranged in the U-shaped frame, so that when articles on the middle layer box below the top layer box are taken and placed, the top layer box can be slidably pulled out, convenience in taking and placing the articles on the middle layer box below the top layer box is ensured, and a user experience effect is good; the whole layout design is exquisite, the structure is compact, the practicality is strong, can all use in scenes such as kitchen, dining room, living room.

Example 2

The present utility model is a cart rack, which is different from the cart rack in embodiment 1 in that: including a plurality of stand 1, bottom box 2, a plurality of middle level box 3, top layer box 4 and U type frame 6, bottom box 2 correspond the below that is located U type frame 6, bottom box 2 and the stand 1 lower extreme fixed connection that corresponds, U type frame 6 and the stand 1 upper end fixed connection that corresponds, a plurality of stand 1, bottom box 2 and U type frame 6 constitute main part frame structure, a plurality of middle level box 3 from the top down interval distribution in main part frame structure's cavity inside, middle level box 3 pass through sliding component slidable mounting on stand 1, top layer box 4 pass through a pair of slide rail 7 slidable mounting in U type frame 6 inside, bottom box 2 bottom install gyro wheel 8.

Preferably, the sliding assembly comprises a pair of support plates and a pair of second sliding rails, the pair of support plates are correspondingly and fixedly arranged on the inner sides of the upright posts 1, and the middle layer box 3 is slidably arranged on the support plates on the corresponding sides through the pair of second sliding rails.

Further preferably, the outer sides of a group of opposite section plates of the rectangular frame A on the middle layer box 3 are respectively provided with a mounting hole A-2, and the middle layer box 3 is fixedly arranged on the movable rail on the second sliding rail through screws penetrating through the inner parts of the mounting holes A-2.

Further preferably, the support plate is an aluminum material.

According to the trolley commodity shelf, the top layer box is slidably arranged in the U-shaped frame, so that when an article on the middle layer box below the top layer box is taken and placed, the top layer box can be slidably pulled out, and convenience in taking and placing the article on the middle layer box below the top layer box is ensured; similarly, the middle layer box which is slidably arranged in the cavity of the main body frame structure can be pulled out, so that convenience in taking and placing articles on the lower middle layer box or the bottom layer box is ensured, and the user experience effect is good; the whole layout design is exquisite, the structure is compact, the practicality is strong, can all use in scenes such as kitchen, dining room, living room.

According to the trolley commodity shelf, a user can fixedly arrange part of middle layer boxes on the upright posts according to the use requirement, and the other part of middle layer boxes are slidably arranged in the cavity of the main body frame structure through the sliding component.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.

Claims

1. The utility model provides a handcart supporter, its characterized in that includes a plurality of stand (1), bottom box (2), a plurality of middle level box (3), top layer box (4) and U type frame (6), bottom box (2) correspond the below that is located U type frame (6), bottom box (2) and corresponding stand (1) lower extreme fixed connection, U type frame (6) and corresponding stand (1) upper end fixed connection, main body frame structure is constituteed to a plurality of stand (1), bottom box (2) and U type frame (6), a plurality of middle level box (3) from the top down interval distribution in main body frame structure's cavity inside, middle level box (3) set firmly on corresponding stand (1), perhaps middle level box (3) pass through sliding assembly slidable mounting on stand (1), top layer box (4) inside U type frame (6) through a pair of slide rail (7) slidable mounting, bottom box (2) bottom install gyro wheel (8).

2. The trolley commodity shelf as claimed in claim 1, wherein the bottom layer box (2), the middle layer box (3) and the top layer box (4) all comprise rectangular frames (a) and a bottom plate (B), the rectangular frames (a) are formed by splicing four section plates through a first corner bracket (C) and screw fixation, and the outer periphery of the bottom plate (B) is inserted and installed in an insertion groove (a-3) at the lower end of the inner peripheral side surface of the rectangular frames (a).

3. The trolley commodity shelf according to claim 2, wherein the number of the upright posts (1) is four, the cross section of the upright post (1) is of an L-shaped structure, the top angle of the bottom layer box (2) is fixedly connected with the lower end of the corresponding upright post (1), and the top angle and the end part of the U-shaped frame (6) are fixedly connected with the upper end of the corresponding upright post (1);

the top angle of the middle layer box (3) is fixedly arranged on the corresponding upright post (1), or the sliding component comprises a pair of supporting plates and a pair of sliding rails II, the pair of supporting plates are correspondingly and fixedly arranged on the inner side of the upright post (1), and the middle layer box (3) is slidably arranged on the supporting plate on the corresponding side through the pair of sliding rails II.

4. A trolley shelf as claimed in claim 3, characterized in that the upright (1) is provided with a plurality of mounting holes 1-1 at intervals in the length direction; the outer sides of a group of opposite profile plates of the rectangular frame (A) on the top box (4) are respectively provided with a third mounting hole (A-2), and the top box (4) is fixedly arranged on a movable rail on the first sliding rail (7) through a screw penetrating through the third mounting hole (A-2);

two ends of a group of opposite profile plates of the rectangular frame (A) on the bottom layer box (2) are respectively provided with a second mounting hole (A-1) which vertically penetrates through the plate body, and the bottom layer box (2) is fixedly connected with a first corresponding mounting hole (1-1) on the upright post (1) through a screw which penetrates through the second mounting hole (A-1);

two ends of a group of opposite section plates of the rectangular frame (A) on the middle layer box (3) are respectively provided with a second mounting hole (A-1) which vertically penetrates through the plate body, and the middle layer box (3) is fixedly connected with a first corresponding mounting hole (1-1) on the upright post (1) through a screw which penetrates through the second mounting hole (A-1);

or, the outer sides of a group of opposite section plates of the rectangular frame (A) on the middle layer box (3) are respectively provided with a third mounting hole (A-2), and the middle layer box (3) is fixedly arranged on the movable rail on the second sliding rail through screws penetrating through the third mounting holes (A-2).

5. Trolley shelf according to claim 4, characterized in that the bottom layer box (2), the middle layer box (3) and the top layer box (4) are respectively provided with a plurality of separation components (5) which divide the inner space into a plurality of space containing units.

6. The trolley shelf as claimed in claim 5, characterized in that the separation assembly (5) comprises a separation plate (5-1) and two clamping joints (5-2), the clamping joints (5-2) are provided with slots (5-2 a) and clamping grooves (5-2 b) with downward openings, two ends of the separation plate (5-1) are respectively inserted into the slots (5-2 a) of the clamping joints (5-2) in an interference manner, and two ends of the separation plate (5-1) are respectively clamped and mounted on a group of opposite profile plates on the rectangular frame (A) through the clamping grooves (5-2 b) of the clamping joints (5-2).

7. The trolley commodity shelf according to claim 6, wherein said U-shaped frame (6) is formed by fixedly splicing three section plates through a second corner bracket (D) and screws, and two ends of said U-shaped frame (6) are fixedly connected with a first mounting hole (1-1) on the corresponding upright (1) through a third corner bracket (E) and screws, respectively.

8. The trolley shelf as claimed in claim 7, characterized in that the upper ends of the second and third corner brackets (D) and (E) are respectively provided with an L-shaped eave (F) located on the upper end face of the corresponding upright post (1).

9. The trolley commodity shelf as claimed in claim 8, wherein the length of the top box (4) along the sliding direction is less than the depth of the U-shaped frame (6), a pair of first slide rails (7) are correspondingly and fixedly arranged at one ends of two side arms of the U-shaped frame (6) close to the opening, and when the top box (4) is stored in the U-shaped frame (6), an avoidance space (6-1) is formed between the bottom of the U-shaped frame (6) and the top box (4).

10. Trolley shelf according to claim 9, characterized in that the upright (1), the bottom plate (B), the profile plate on the rectangular frame (a), the profile plate on the U-shaped frame (6) and the support plate are all aluminium materials, and the clamping joint (5-2) is a plastic injection molding piece; the roller (8) is a universal wheel with a brake pad.