Material trolley

Abstract

The utility model discloses a material trolley which relates to the technical field of transportation and comprises a trolley body frame, the front face of the trolley body frame is open, a breathable cover plate is arranged on the inner side of the top of the trolley body frame in a turnover mode, breathable baffles are fixedly arranged on the back face and the two side faces of the trolley body frame, and a breathable bottom plate is fixedly arranged at the bottom of the trolley body frame. A plurality of breathable layer frames are arranged in the vehicle body frame in a turnover mode. When the breathable cover plate and the breathable layer frames are located at the horizontal position, a first material storage space is formed between the breathable bottom plate and the adjacent breathable layer frame, a second material storage space is formed between every two adjacent breathable layer frames, and a third material storage space is formed between the breathable cover plate and the adjacent breathable layer frame. According to the material trolley, the ventilation cover plate, the ventilation baffle, the ventilation bottom plate and the ventilation layer frames are arranged on the trolley body frame, so that the safety and the ventilation performance of the material trolley can be effectively improved on the premise that it is guaranteed that materials are conveniently taken and placed in the material trolley.

Description

TECHNICAL FIELD

[0001] The utility model relates to transportation technical field, concretely relates to a material trolley. BACKGROUND

[0002] The material trolley is an important auxiliary tool in the production process, and can effectively improve production efficiency.

[0003] The utility model discloses a material turnover vehicle, it includes frame, bottom plate and baffle, the frame one side is equipped with the open mouth, the bottom plate is installed in the lower part of the frame, the baffle is connected to the frame with the overturning, the baffle with the frame is connected one end away from the open mouth, the baffle is located in the upper portion of the bottom plate, this material turnover vehicle passes through the baffle design of overturning, and it is convenient for operator to take and place material in the lower layer of material turnover vehicle.

[0004] Although the material turnover vehicle is convenient when taking and placing material, but still has following problem: (1) the side of material turnover vehicle is not provided with baffle, and the baffle overturning exists the risk of causing personnel mechanical injury, and the safety is not high enough, (2) the baffle is not breathable, and the air circulation is blocked, when needing to refrigerate or dry the material together with the material trolley whole vehicle, the baffle of not breathable can influence the refrigeration effect or drying effect of whole vehicle material. UTILITY MODEL CONTENTS

[0005] The utility model discloses a material trolley, through setting up breathable cover plate, breathable baffle, breathable bottom plate and a plurality of breathable layer frame on the car body frame, can effectively improve the safety and breathability of material trolley under the premise of guaranteeing the convenient taking and placing material of material trolley.

[0006] The utility model provides a material trolley, material trolley includes car body frame, the front of car body frame is open, the inside of the top of car body frame can overturn and is provided with breathable cover plate, the back and both sides of car body frame are all fixedly provided with breathable baffle, the bottom of car body frame is fixedly provided with breathable bottom plate,

[0007] A plurality of breathable layer frames are arranged in the car body frame and can be turned over, when the breathable cover plate and the plurality of breathable layer frames are located at the horizontal position, the breathable bottom plate and the adjacent breathable layer frame form the first material storage space, the second material storage space is formed between the two adjacent breathable layer frames, and the third material storage space is formed between the breathable cover plate and the adjacent breathable layer frame.

[0008] Specifically, the rear side edge of the air-permeable cover plate is rotationally connected to the inner side of the back of the vehicle body frame based on a first hinge structure, the two side edges of the air-permeable cover plate are rotationally connected to the inner sides of the sides of the vehicle body frame based on first gas springs, and the front side edge of the air-permeable cover plate is provided with a first support column.

[0009] The rear side edge of any of the air-permeable shelves is rotationally connected to the inner side of the back of the vehicle body frame based on a second hinge structure, the two side edges of any of the air-permeable shelves are rotationally connected to the inner sides of the sides of the vehicle body frame based on second gas springs, and the front side edge of any of the air-permeable shelves is provided with a second support column.

[0010] When the air-permeable cover plate and the plurality of air-permeable shelves are in a horizontal position, the first support column is used to vertically support the air-permeable cover plate upwards, and the second support column is used to vertically support the corresponding air-permeable shelf upwards.

[0011] Specifically, the plurality of air-permeable shelves include one or both of a bent sheet metal shelf and a mesh shelf.

[0012] The bent sheet metal shelf includes a first support frame and a plurality of limiting strips fixedly arranged on the first support frame, any of the limiting strips includes a first bent sheet metal strip and a second bent sheet metal strip arranged opposite to each other, and the first bent sheet metal strip and the second bent sheet metal strip are both provided with a first tray limiting block.

[0013] The mesh shelf includes a second support frame and a mesh plate fixedly arranged on the second support frame, the second support frame is provided with a second tray limiting block, and the center of the mesh plate is provided with a third tray limiting block.

[0014] Specifically, the top of the vehicle body frame is provided with a lock seat, and the air-permeable cover plate is provided with a lock catch; when the air-permeable cover plate is in a horizontal position, the lock seat is aligned with the lock catch.

[0015] Specifically, the back of the vehicle body frame is provided with a handle.

[0016] Specifically, the bottom of the air-permeable bottom plate is provided with a first reinforcing steel strip along a first direction, and the bottom of the air-permeable bottom plate is provided with a second reinforcing steel strip along a second direction, and the first direction and the second direction are perpendicular to each other.

[0017] Specifically, the first reinforcing steel strip extends from the front of the vehicle body frame to the back, and the first reinforcing steel strip includes two first sub-steel strips arranged in parallel.

[0018] The second reinforcing steel strip extends from the left side of the vehicle body frame to the right side, and the second reinforcing steel strip includes two second sub-steel strips arranged in parallel.

[0019] Specifically, four corners of the bottom of the vehicle body frame are provided with rollers.

[0020] Specifically, any of the rollers is arranged at the bottom of the vehicle body frame based on the height adjusting column.

[0021] Specifically, the roller located at the front side of the material trolley is a directional wheel, and the roller located at the rear side of the material trolley is a universal wheel.

[0022] Compared with the prior art, the utility model has the beneficial effects that:

[0023] In the material trolley, the design of the turnable air-permeable cover plate and the design of the turnable air-permeable layer frame guarantee the convenience of taking and placing materials; the air-permeable baffle surrounds the back and two sides of the vehicle body frame, avoids exposing the back and two sides of the air-permeable cover plate and the air-permeable layer frame, thereby effectively reducing the risk of mechanical injury to personnel caused by turning the air-permeable cover plate and the air-permeable layer frame, and the safety is high; the air-permeable cover plate, the air-permeable baffle, the air-permeable bottom plate and the plurality of air-permeable layer frames can all permeate air, which is conducive to improving the air permeability of the material trolley, so that air can freely circulate in the material trolley, thereby being conducive to guaranteeing the refrigeration effect or the drying effect of the whole vehicle material. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating creative labor.

[0025] Figure 1 It is the first three-dimensional structure schematic view of the material trolley in the embodiment of the utility model;

[0026] Figure 2 It is the second three-dimensional structure schematic view of the material trolley in the embodiment of the utility model;

[0027] Figure 3 It is the structure schematic view of the bent sheet metal layer frame in the embodiment of the utility model;

[0028] Figure 4 It is the structure schematic view of the mesh layer frame in the embodiment of the utility model;

[0029] Figure 5 It is the first structure schematic view of the vehicle body frame in the embodiment of the utility model;

[0030] Figure 6 It is Figure 1 the enlarged structure schematic view of area A;

[0031] Figure 7 is a third perspective structural schematic view of the material trolley in the embodiment of the utility model,

[0032] Figure 8 is a second structural schematic view of the trolley frame in the embodiment of the utility model,

[0033] Figure 9 is an explosion structural schematic view of the material tray in the embodiment of the utility model.

[0034] In the drawings, 100, breathable cover plate; 101, lock seat; 102, lock catch; 110, first hinged structure; 120, first gas spring; 130, first support column; 131, first buffer pad; 200, breathable baffle; 210, handle; 220, radio frequency tag; 300, breathable bottom plate; 310, fourth tray limiting block; 320, fifth tray limiting block; 330, first reinforcing steel bar; 340, second reinforcing steel bar; 350, roller; 351, directional wheel; 352, universal wheel; 360, height adjusting column; 400, breathable shelf; 410, second hinged structure; 420, second gas spring; 430, second support column; 431, second buffer pad; 500, bent sheet metal shelf; 510, first support frame; 520, limiting strip; 521, first bent sheet metal strip; 522, second bent sheet metal strip; 530, first tray limiting block; 600, mesh shelf; 610, second support frame; 611, second tray limiting block; 620, mesh plate; 621, third tray limiting block; 700, material tray; 710, tray frame; 720, tray bottom plate. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0036] The utility model provides a kind of material trolley, Figure 1 It shows the first perspective structural schematic view of the material trolley in the embodiment of the utility model, Figure 2The utility model discloses a second three -dimensional structure schematic drawing of material dolly is shown, the material dolly includes the car body frame, the front open of car body frame, the inside of the top of car body frame can be turned over and is provided with the breathable cover plate 100, the back and both sides of car body frame are all fixedly provided with the breathable baffle 200, the bottom of car body frame is fixedly provided with the breathable bottom plate 300, the car body frame can be turned over and is provided with a plurality of breathable layer frame 400, when breathable cover plate 100 and a plurality of breathable layer frame 400 are located horizontal position, the breathable bottom plate 300 and adjacent breathable layer frame 400 form first material storage space, and adjacent two breathable layer frame 400 form second material storage space, and breathable cover plate 100 and adjacent breathable layer frame 400 form third material storage space.

[0037] In the material dolly of the utility model, the design of the breathable cover plate 100 and the design of the breathable layer frame 400 guarantee the convenience of taking and placing materials of the material dolly, the back and both sides of the car body frame are surrounded by the breathable baffle 200, so that the back and both sides of the breathable cover plate 100 and the breathable layer frame 400 are avoided to be exposed, thereby effectively reducing the risk of mechanical injury of personnel caused by the turning of the breathable cover plate 100 and the breathable layer frame 400, and the safety is high, the breathable cover plate 100, the breathable baffle 200, the breathable bottom plate 300 and the plurality of breathable layer frames 400 can all be breathable, which is favorable for improving the breathability of the material dolly, so that air can freely circulate in the material dolly, thereby being favorable for guaranteeing the refrigeration effect or the drying effect of the whole vehicle materials.

[0038] In some specific embodiments, the first material storage space, the second material storage space and the third material storage space are mainly used for placing materials loaded in the tray, such as a penicillin bottle, a rubber plug, an aluminum-plastic combined cover and the like.

[0039] In some specific embodiments, please refer to Figure 2The rear side edge of the air-permeable cover plate 100 is rotatably connected to the inner side of the back of the vehicle body frame based on the first hinge structure 110, the two side edges of the air-permeable cover plate 100 are rotatably connected to the inner side of the side of the vehicle body frame based on the first gas spring 120, and the front side edge of the air-permeable cover plate 100 is provided with the first support column 130; the rear side edge of any air-permeable shelf 400 is rotatably connected to the inner side of the back of the vehicle body frame based on the second hinge structure 410, the two side edges of any air-permeable shelf 400 are rotatably connected to the inner side of the side of the vehicle body frame based on the second gas spring 420, and the front side edge of any air-permeable shelf 400 is provided with the second support column 430; when the air-permeable cover plate 100 and the plurality of air-permeable shelves 400 are located in a horizontal position, the first support column 130 is used for vertically supporting the air-permeable cover plate 100 upwards, and the second support column 430 is used for vertically supporting the corresponding air-permeable shelf 400 upwards.

[0040] Under the support of the hinge structure and the gas spring, the air-permeable cover plate 100 and the air-permeable shelf 400 can be turned upwards, facilitating people to take and place materials layer by layer, and being high in convenience; the support column can intercept the tray while playing a supporting role, so as to prevent the tray from sliding out of the material storage space.

[0041] Specifically, the first gas spring 120 and the second gas spring 420 are both nitrogen gas springs, which are a new type of elastic component with high-pressure nitrogen gas as working medium, and have the advantages of small volume, large elastic force, long stroke, stable work, long service life, and flat elastic force curve, and can effectively support the air-permeable cover plate 100 and the air-permeable shelf 400 to move.

[0042] Further, referring to Figure 2 The bottom of the first support column 130 is provided with a first buffer pad 131, which can reduce the vibration of the air-permeable cover plate 100 in the process of transferring materials; and the bottom of the second support column 430 is provided with a second buffer pad 431, which can reduce the vibration of the air-permeable shelf 400 in the process of transferring materials.

[0043] Figure 3 A structure schematic view of the bent metal sheet shelf is shown in the embodiment of the utility model, Figure 4 A structure schematic view of the mesh shelf is shown in the embodiment of the utility model, and the plurality of air-permeable shelves 400 include one or both of the bent metal sheet shelf 500 and the mesh shelf 600, and the type of the air-permeable shelf 400 can be set according to specific needs.

[0044] Specifically, referring to Figure 3The bending sheet metal layer frame 500 comprises a first support frame 510 and a plurality of limiting strips 520 fixed on the first support frame 510, any limiting strip 520 comprises a first bending sheet metal strip 521 and a second bending sheet metal strip 522 arranged oppositely and spaced apart, and the first bending sheet metal strip 521 and the second bending sheet metal strip 522 are provided with first tray limiting blocks 530; the first bending sheet metal strip 521 and the second bending sheet metal strip 522 are arranged oppositely and spaced apart, and have a large air permeation gap therebetween, and can form a plurality of tray containing positions, and the first tray limiting blocks 530 can make a plurality of trays stably placed on the bending sheet metal layer frame 500, avoiding excessive shaking of the trays during transportation.

[0045] Specifically, please refer to Figure 4 The mesh layer frame 600 comprises a second support frame 610 and a mesh plate 620 fixed on the second support frame 610, the second support frame 610 is provided with second tray limiting blocks 611, and the mesh plate 620 is provided with third tray limiting blocks 621 in the center; the mesh plate 620 has good air permeation performance and can bear a plurality of trays; the second tray limiting blocks 611 and the third tray limiting blocks 621 cooperate with each other, so that the placing stability of the trays on the mesh layer frame 600 is improved, and excessive shaking of the trays during transportation is avoided.

[0046] Preferably, please refer to Figure 2 The plurality of air permeation layer frames 400 comprise the bending sheet metal layer frame 500 and the mesh layer frame 600, and the mesh layer frame 600 is located below the bending sheet metal layer frame 500, so that the air permeation performance between the plurality of air permeation layer frames 400 is improved.

[0047] Figure 5 A first structure schematic view of a vehicle body frame in the embodiment of the utility model is shown, the upper surface of the air permeation bottom plate 300 is provided with fourth tray limiting blocks 310 around, and the upper surface of the air permeation bottom plate 300 is provided with fifth tray limiting blocks 320 in the center. The upper surface of the air permeation bottom plate 300 can also bear a plurality of trays; the fourth tray limiting blocks 310 and the fifth tray limiting blocks 320 cooperate with each other, so that the placing stability of the trays on the air permeation bottom plate 300 is improved, and excessive shaking of the trays during transportation is avoided.

[0048] Figure 6 A first structure schematic view of a vehicle body frame in the embodiment of the utility model is shown, the upper surface of the air permeation bottom plate 300 is provided with fourth tray limiting blocks 310 around, and the upper surface of the air permeation bottom plate 300 is provided with fifth tray limiting blocks 320 in the center. The upper surface of the air permeation bottom plate 300 can also bear a plurality of trays; the fourth tray limiting blocks 310 and the fifth tray limiting blocks 320 cooperate with each other, so that the placing stability of the trays on the air permeation bottom plate 300 is improved, and excessive shaking of the trays during transportation is avoided. Figure 1The enlarged structural schematic view of the middle A area, the top of the vehicle body frame is provided with a lock seat 101, and the air-permeable cover plate 100 is provided with a lock buckle 102; when the air-permeable cover plate 100 is in a horizontal position, the lock seat 101 is aligned with the lock buckle 102. The air-permeable cover plate 100 can be locked in the horizontal position, so that the plurality of air-permeable layer frames 400 are stably limited to the horizontal stacked state, ensuring that the air-permeable layer frames 400 are not bounced up by external force during the transfer of the materials, and the safety of the transportation of the materials is ensured.

[0049] Figure 7 The third three-dimensional structural schematic view of the material trolley in the embodiment of the utility model is shown, the back of the vehicle body frame is provided with a handle 210, which facilitates people to push the material trolley. Specifically, the length of the handle 210 is greater than or equal to 40 cm, which can be simultaneously gripped by two people, facilitating people to jointly push the material trolley.

[0050] Figure 8 The second structural schematic view of the vehicle body frame in the embodiment of the utility model is shown, the bottom of the air-permeable bottom plate 300 is provided with a first reinforcing steel bar 330 along a first direction, the bottom of the air-permeable bottom plate 300 is provided with a second reinforcing steel bar 340 along a second direction, the first direction and the second direction are perpendicular to each other, which can effectively enhance the mechanical strength of the air-permeable bottom plate 300, thereby improving the carrying capacity of the material trolley.

[0051] Specifically, please refer to Figure 8 , the first reinforcing steel bar 330 extends from the front of the vehicle body frame to the back, and the first reinforcing steel bar 330 comprises two first sub-steel bars arranged in parallel; the second reinforcing steel bar 340 extends from the left side of the vehicle body frame to the right side, and the second reinforcing steel bar 340 comprises two second sub-steel bars arranged in parallel. The reinforcing effect of the air-permeable bottom plate 300 is good, which is not only beneficial to improve the upper limit of the load of the material trolley, but also can improve the anti-deformation capacity of the air-permeable bottom plate 300.

[0052] Further, the first sub-steel bar and the second sub-steel bar are both stainless steel flat steel, the width of the stainless steel flat steel is greater than or equal to 16 mm, and the thickness of the stainless steel flat steel is greater than or equal to 28.5 mm, so that the strength of the air-permeable bottom plate 300 is good, the load capacity is strong, and the deformation is small.

[0053] In some specific embodiments, please refer to Figure 8 , the four corners of the bottom of the vehicle body frame are provided with a roller 350, which facilitates people to push the material trolley.

[0054] Specifically, please refer to Figure 8, any of the rollers 350 is arranged at the bottom of the vehicle frame based on the height adjusting column 360, different lengths of the height adjusting column 360 can be installed according to specific needs, so as to adjust the height of the bottom of the vehicle frame, leave enough accommodation space for the AGV trolley, so that the material trolley can not only be pushed by artificial, but also be carried by the AGV trolley, more flexible and convenient to use, and the practicability of the material trolley is significantly enhanced. Among them, the AGV trolley can be a latent lifting type AGV or a forklift type AGV, which can effectively carry the material trolley.

[0055] Further, please refer to Figure 8 The roller 350 located at the front side of the material trolley is a directional wheel 351, and the roller 350 located at the rear side of the material trolley is a universal wheel 352, which facilitates controlling the advancing direction of the material trolley.

[0056] In some specific embodiments, please refer to Figure 7 The side of the vehicle frame is provided with a radio frequency tag 220, which facilitates non-contact identification of the material trolley, so as to control the AGV trolley to carry the corresponding material trolley.

[0057] In some specific embodiments, the vehicle frame, the air-permeable cover plate 100, the air-permeable baffle 200, the air-permeable bottom plate 300 and the air-permeable shelf 400 are all made of stainless steel, which is firm, solid, durable and rust-free.

[0058] In some specific embodiments, the first material storage space, the second material storage space and the third material storage space accommodate a plurality of material trays 700; Figure 9 An explosion structure schematic diagram of the material tray in the embodiment of the utility model is shown, any of the material trays 700 comprises a tray frame 710 and a tray bottom plate 720, the tray bottom plate 720 is placed in the tray frame 710, and the tray frame 710 is used for supporting the tray bottom plate 720. The material tray 700 is especially suitable for loading penicillin bottles; when discharging, the tray bottom plate 720 can be lifted by the top block, so that the tray bottom plate 720 is higher than the tray frame 710, thereby facilitating the penicillin bottles to be pushed out of the material tray 700 in an orderly manner.

[0059] Specifically, please refer to Figure 9 The tray frame 710 and the tray bottom plate 720 are both provided with a plurality of through holes, which facilitates air circulation and is beneficial to material refrigeration and material drying.

[0060] Further, any of the material trays 700 is a stainless steel tray, which is corrosion-resistant and will not drop slag.

[0061] The breathable cover plate 100 and the breathable layer frame 400 can be turned over, which guarantees the convenience of taking and placing materials of the material trolley; the breathable baffle 200 surrounds the back and two sides of the trolley frame, avoids exposing the back and two sides of the breathable cover plate 100 and the breathable layer frame 400, thereby effectively reducing the risk of mechanical injury of personnel caused by turning over of the breathable cover plate 100 and the breathable layer frame 400, and the safety is high; the breathable cover plate 100, the breathable baffle 200, the breathable bottom plate 300 and the plurality of breathable layer frames 400 can all be breathable, which is beneficial to improving the breathability of the material trolley, so that air can freely circulate in the material trolley, thereby being beneficial to guaranteeing the refrigeration effect or the drying effect of the whole vehicle material.

[0062] The plurality of breathable layer frames 400 include one or both of the bent sheet metal layer frame 500 and the mesh layer frame 600, the type of the breathable layer frame 400 can be set according to specific requirements, and the applicability is wide; in combination with the tray limiting block, the supporting column and the like, the placing stability of the tray can be effectively improved, and excessive shaking of the tray in the transportation process is avoided.

[0063] Moreover, the bottom of the breathable bottom plate 300 is provided with the first reinforcing steel bar 330 and the second reinforcing steel bar 340 which are perpendicular to each other, so that the mechanical strength of the breathable bottom plate 300 can be effectively improved, thereby improving the carrying capacity of the material trolley.

[0064] In addition, the trolley frame can adjust the bottom height by installing height adjusting columns 360 of different lengths, so as to leave enough accommodation space for the AGV trolley, so that the material trolley can not only be pushed by manpower, but also be carried by the AGV trolley, which is more flexible and convenient to use, and the practicability of the material trolley is significantly improved.

[0065] The above describes a material trolley provided by the utility model in detail, and the principle and implementation mode of the utility model are described by using specific examples in the paper; the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the art, the specific implementation mode and the application range can be changed according to the idea of the utility model, and the above description should not be understood as the limitation of the utility model.

Claims

1. A material handling vehicle characterized by, The material trolley comprises a trolley body frame, the front of the trolley body frame is open, the top inner side of the trolley body frame is reversibly provided with a breathable cover plate, the back and both sides of the trolley body frame are fixedly provided with breathable baffle plates, and the bottom of the trolley body frame is fixedly provided with a breathable bottom plate. A plurality of breathable layer frames are reversibly arranged in the trolley body frame; when the breathable cover plate and the plurality of breathable layer frames are located at a horizontal position, a first material storage space is formed between the breathable bottom plate and an adjacent breathable layer frame, a second material storage space is formed between two adjacent breathable layer frames, and a third material storage space is formed between the breathable cover plate and an adjacent breathable layer frame.

2. The material cart of claim 1, wherein, The rear side edge of the breathable cover plate is rotationally connected to the inner side of the back of the trolley body frame based on a first hinge structure, the two side edges of the breathable cover plate are rotationally connected to the inner sides of the sides of the trolley body frame based on first gas springs, and the front side edge of the breathable cover plate is provided with a first support column. The rear side edge of any one of the breathable layer frames is rotationally connected to the inner side of the back of the trolley body frame based on a second hinge structure, the two side edges of any one of the breathable layer frames are rotationally connected to the inner sides of the sides of the trolley body frame based on second gas springs, and the front side edge of any one of the breathable layer frames is provided with a second support column. When the breathable cover plate and the plurality of breathable layer frames are located at a horizontal position, the first support column is used for vertically supporting the breathable cover plate upwards, and the second support column is used for vertically supporting the corresponding breathable layer frame upwards.

3. The material cart of claim 1, wherein, The plurality of breathable layer frames comprise one or both of a bent sheet metal layer frame and a mesh layer frame. The bent sheet metal layer frame comprises a first support frame and a plurality of limiting strips fixedly arranged on the first support frame, any one of the limiting strips comprises a first bent sheet metal strip and a second bent sheet metal strip arranged opposite to each other, and the first bent sheet metal strip and the second bent sheet metal strip are both provided with first tray limiting blocks. The mesh layer frame comprises a second support frame and a mesh plate fixedly arranged on the second support frame, the second support frame is provided with second tray limiting blocks, and the center of the mesh plate is provided with third tray limiting blocks.

4. The material cart of claim 1, wherein, The top of the trolley body frame is provided with a lock seat, and the breathable cover plate is provided with a lock catch; when the breathable cover plate is located at a horizontal position, the lock seat is aligned with the lock catch.

5. The material cart of claim 1, wherein, The back of the trolley body frame is provided with a handle.

6. The material cart of claim 1, wherein, The bottom of the breathable bottom plate is provided with a first reinforcing steel strip in a first direction, and the bottom of the breathable bottom plate is provided with a second reinforcing steel strip in a second direction, and the first direction and the second direction are perpendicular to each other.

7. The material cart of claim 6, wherein, The first reinforcing steel strip extends from the front of the trolley body frame to the back, and the first reinforcing steel strip comprises two first sub-steel strips arranged in parallel. The second reinforcing steel strip extends from the left side of the trolley body frame to the right side, and the second reinforcing steel strip comprises two second sub-steel strips arranged in parallel.

8. The material cart of claim 1, wherein, Four corners of the bottom of the trolley body frame are provided with rollers.

9. The material cart of claim 8, wherein, Any one of the rollers is arranged at the bottom of the trolley body frame based on a height adjusting column.

10. The material cart of claim 8 or 9, wherein, The rollers located at the front side of the material trolley are directional wheels, and the rollers located at the back side of the material trolley are universal wheels.

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