Portable heavy duty shelf truck

Abstract

The invention discloses a portable heavy-duty shelf vehicle, comprising a load-bearing tray, a support frame and a tripod; the front and rear ends of the load-bearing tray are both provided with hoisting earring assemblies; the upper end of the load-bearing tray is provided with a plurality of groups of zipper assemblies, each group of zipper assemblies comprises two left and right draw hooks arranged oppositely; the tripod has two legs, the bottoms of the two legs are provided with lock hooks which can respectively lock and cooperate with two draw hooks of the same group of zipper assemblies; the lower end of the load-bearing tray is provided with a plurality of universal wheels, the left and right sides of the load-bearing tray are both connected with stabilizing assemblies, the stabilizing assemblies comprise a stabilizing frame which can move up and down relative to the load-bearing tray and a handle for driving the stabilizing frame to move up and down. It can meet the functional requirements in the entire process of deep processing, packaging, transportation and handling of products, and has the advantages of convenient disassembly and stacking, stable operation and long service life.

Description

Technical Field

[0001] The invention relates to the technical field of circulation and transportation, in particular to a portable heavy-duty shelf vehicle. Background Art

[0002] In the processing industry of stone, glass and metal plates, simple fixed metal triangular brackets are usually used as temporary stacking and circulation devices for workpieces, semi-finished products and finished products, and customized wooden boxes are used as packaging and handling devices for shipped finished products. For the former, most of them require manual loading and unloading of goods, and for the latter, after manual loading and unloading, forklifts and cranes are required for transportation. It can be seen that a lot of material and manpower are required for loading and unloading in all links from production and processing to application and installation, which not only easily causes damage to the product, but also poses a safety hazard to the staff. At the same time, it will also affect work efficiency and production costs. In addition, the fixed metal triangular bracket is large in size and will occupy a larger compartment space during transportation, which will greatly reduce transportation efficiency. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned problems of the prior art and provide a portable heavy-duty shelf truck which can meet the functional requirements of the entire process of product deep processing, packaging, transportation and handling, and has the advantages of convenient disassembly and stacking, stable operation and long service life.

[0004] The purpose of the present invention is mainly achieved through the following technical solutions:

[0005] Portable heavy-duty shelf truck, including load-bearing tray, support frame and tripod;

[0006] The front and rear ends of the load-bearing tray are both provided with a lifting earring assembly, the lifting earring assembly includes two lifting earrings arranged opposite to each other on the left and right sides, and a counter-support fixing piece is connected to the front end face or the rear end face of the load-bearing tray;

[0007] The support frame has a pulling means which is locked with the counter-support fixing piece, and the two ends of the pulling means are respectively bent to form a supporting section, and the free ends of the two supporting sections respectively pass through the two hanging earrings in the same hanging earring assembly, and the ends are bent to form a stop hook which can cooperate with the hanging earrings;

[0008] The upper end of the load-bearing tray is equipped with two front-to-back positioning square tubes, each tripod has two legs, and the bottoms of the two legs are provided with positioning grooves that can be clamped on the two positioning square tubes respectively;

[0009] The bottom of the two legs are provided with a locking hook located above the positioning groove, and the upper end of the load-bearing tray is provided with a plurality of zipper assemblies adapted to the number of the tripods, each zipper assembly includes two left and right oppositely arranged draw hooks, and the two draw hooks can be respectively locked with the locking hooks on the two legs of the same tripod;

[0010] A plurality of universal wheels are arranged at the lower end of the load-bearing tray;

[0011] The left and right sides of the load-bearing tray are both connected with a stabilizing assembly which can move up and down relative to the load-bearing tray. When the stabilizing assembly is located at the lowest position, a plurality of universal wheels are separated from the ground.

[0012] In the present invention, the load-bearing tray is used to load workpieces, semi-finished products, finished products and shipping finished products. It can be stamped and shaped by 3MM thick steel plate and distributed in a field-shaped structure. The upper ends of the two legs in each tripod are connected together, and the lower ends of the two legs are respectively clamped on two positioning squares, and then the draw hook on the load-bearing tray is locked on the lock hook, so that multiple tripods can be quickly installed.

[0013] During application, when the present invention is needed to load and unload goods or stop in the carriage, the stabilizing assembly is driven so that the stabilizing assembly can move downward. During the downward movement, the load-bearing tray is gradually lifted upward until the universal wheel is separated from the ground, and then the support frame is moved so that the pulling means can be fixed in the anti-support fixture. At this time, the stop hook is in close contact with the ground to achieve anti-support for the load-bearing tray. In this way, the position of the shelf car can be fixed to prevent it from moving in this state. When the invention is needed to circulate, the position of the stabilizing assembly is reset so that the stabilizing assembly can move upward until the universal wheel is in contact with the ground again, and then the locking effect of the anti-support fixture on the pulling means is released, and the pulling means is moved so that the stop hook is separated from the ground. Since the stop hook can cooperate with the lifting earring, it can directly act on the pulling means to realize the movement of the shelf car. When it is necessary to use a lifting device to transport the shelf car with the goods, the lifting rope can be directly connected to the lifting earring assembly.

[0014] It can be seen that the present invention changes the single-function design of traditional transportation auxiliary tools. It can replace the fixed frame for process flow or temporary stacking during deep processing of workpieces, and directly enter the lifting equipment (forklift or crane) with the car and goods after processing for fast and stable loading, transportation and unloading. It greatly saves labor costs, packaging costs and handling costs in the circulation operations in the production link. At the same time, it also greatly reduces material loss and labor injury rate in manual operations.

[0015] In order to achieve the locking fit between the counter-support fixing member and the pulling means, the counter-support fixing member further comprises a fixing member and an adjusting rod, the fixing member has a fixing section connected to the load-bearing tray and a movable section with one end hinged to the top of the fixing section, the lower end of the adjusting rod can sequentially penetrate the other end of the movable section and the upper and lower end surfaces of the fixing section, and cooperate with the thread of the fixing section. When the present invention is applied, the area between the movable section and the fixed section can be expanded by rotating the movable section, and the pulling means is then placed in the area, and then the movable section is reset, and the adjusting rod is made to penetrate the fixed section to lock the pulling means.

[0016] In order to improve the stability of the shelf truck when it is fixed, a ground pad is further provided at the stop hook. When loading and unloading goods or stopping in the carriage, the ground pad is directly in contact with the ground, so that the gravity carried by the load-bearing tray is transferred to the ground pad, thereby achieving a stabilizing effect.

[0017] In order to improve the stability of the multiple tripods on the load-bearing tray, further, each of the legs of the multiple tripods is provided with multiple through-holes penetrating the front and rear end surfaces thereof;

[0018] The utility model also comprises a plurality of reinforcing square passages, which can sequentially penetrate through the passages of a plurality of tripods which are located on the same side legs and at the same horizontal line position.

[0019] In this way, shaking and vibration of each tripod when bearing weight can be effectively prevented.

[0020] In order to facilitate the up and down movement of the stabilizing assembly relative to the load-bearing tray, the stabilizing assembly further includes a fixing frame, a stabilizing frame and a handle;

[0021] The fixing frame is connected to the load-bearing tray, and a positioning cylinder is also arranged on the fixing frame, and the top end of the fixing frame is hinged to the bottom end of the handle;

[0022] The stabilizing frame has a positioning rod matched with the positioning tube, the bottom end of the positioning rod is fixedly connected with a support member that can contact the ground, the top end of the positioning rod is hinged with a connecting member, and the hinge point of the connecting member and the positioning rod is lower than the hinge point of the handle and the fixing frame;

[0023] The free end of the connecting piece is hinged on the handle, and the hinge point of the two is located above the hinge point of the fixing frame and the handle.

[0024] In the present invention, the free end of the handle can be rotated to drive the positioning rod to move up and down relative to the load-bearing tray, so that the support member can touch the ground and be off the ground. When the support member touches the ground, the load-bearing tray can be effectively prevented from moving during operation; when the support member is off the ground and the universal wheel touches the ground, the load-bearing tray can be moved under the action of external force.

[0025] Furthermore, support columns are passed through the two ends of the support member, the support columns are threadedly matched with the support member, and a ground-contacting cushion is provided at the bottom end of the support column. Since the heights of the load-bearing trays in different shelf trucks are different, turning the handle to the extreme position does not necessarily make the support member touch the ground. For this reason, the present invention is designed with a support column that can move up and down relative to the support member, so that the position of the support column relative to the support member can be adjusted according to needs.

[0026] In order to prevent the items on the load-bearing tray from sliding and vibrating, the upper end surface of the load-bearing tray is further provided with a plurality of anti-dropping blocks arranged in the left and right directions, the upper end surfaces of the anti-dropping blocks are arranged in an inclined surface, and the height of the anti-dropping blocks gradually increases from the direction close to the positioning square passage to the direction away from the positioning square passage. In this way, the items can be prevented from sliding off the load-bearing tray.

[0027] In order to avoid overloading and affecting the service life of the shelf truck, a weighing assembly is further provided on the load-bearing tray, and the weighing assembly includes a display and a weighing sensor connected to the display. The weighing sensor can be a four-corner weighing sensor.

[0028] In order to reduce the probability of damaging the load-bearing tray, further, the outer side surfaces at the four corners of the load-bearing tray are connected with anti-collision rubber corner guards.

[0029] The present invention has the following beneficial effects: the present invention changes the single-function design of traditional transport auxiliary tools. By setting up the stabilizing components and the support frame, the shelf truck can be well fixed, so that it can replace the fixed frame for process flow or temporary stacking during deep processing of workpieces; by setting up the hoisting earrings, the truck and the goods can be directly put into the lifting equipment (forklift or crane) after processing to carry out fast and stable loading, transportation and unloading. It can be seen that the present invention greatly saves the labor costs, packaging costs and handling costs in the circulation operations in the production link, and at the same time, it also greatly reduces the material loss and personnel injury rate in manual operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention, the following is a brief description of the drawings required to describe the embodiments of the present invention. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on the following drawings without creative work.

[0031] Figure 1 A top view of a specific embodiment of the portable heavy-duty shelf vehicle of the present invention;

[0032] Figure 2 It is a right side view of a specific embodiment of the portable heavy-duty shelf vehicle of the present invention;

[0033] Figure 3 It is a front view of a specific embodiment of the portable heavy-duty shelf vehicle of the present invention;

[0034] Figure 4 It is a structural schematic diagram of a specific embodiment of the counter-support fixing member in the portable heavy-duty shelf vehicle of the present invention;

[0035] Figure 5 The present invention is a schematic structural diagram of a specific embodiment of a draw hook and a lock hook in a portable heavy-duty shelf vehicle.

[0036] Among them, the names of the parts corresponding to the figure numbers are as follows: 1. load-bearing tray, 2. support frame, 3. tripod, 4. lifting earrings, 5. counter-support fixing parts, 6. support section, 7. pulling means, 8. anti-retraction hook, 9. universal wheel, 10. stabilizing frame, 11. pulling hook, 12. support leg, 13. handle, 14. locking hook, 15. support column, 16. fixed section, 17. adjustment rod, 18. ground pad, 19. through-hole, 20. reinforced square passage, 21. anti-slip block, 22. display, 23. weighing sensor, 24. anti-collision rubber corner guard, 25. positioning square passage, 26. positioning groove, 27. movable section, 28. fixing frame, 29. positioning cylinder, 30. ground pad seat, 31. positioning rod, 32. support member, 33. connecting member. DETAILED DESCRIPTION

[0037] In order to make those skilled in the art better understand the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, not all. Based on the embodiments recorded in the present invention, all other embodiments obtained by those skilled in the art without paying creative work are within the scope of protection of the present invention. Example

[0038] like Figures 1 to 3 The portable heavy-duty shelf truck includes a load-bearing tray 1, a support frame 2 and a tripod 3;

[0039] A lifting earring assembly is provided on the front and rear ends of the load-bearing tray 1, and the lifting earring assembly includes two lifting earrings 4 arranged opposite to each other on the left and right sides. A counter-support fixing piece 5 is connected to the front end face or the rear end face of the load-bearing tray 1; the support frame 2 has a pulling means 7 that is locked with the counter-support fixing piece 5, and the two ends of the pulling means 7 are respectively bent to form supporting sections 6, and the free ends of the two supporting sections 6 respectively pass through the two lifting earrings 4 in the same lifting earring assembly, and a stop hook 8 that can cooperate with the lifting earring 4 is bent at the end;

[0040] The upper end of the load-bearing tray 1 is provided with two front-to-back positioning square tubes 25, and each tripod 3 has two legs 12, and the bottoms of the two legs 12 are provided with positioning grooves 26 that can be clamped on the two positioning square tubes 25 respectively;

[0041] The bottom of the two legs 12 is provided with a locking hook 14 located above the positioning groove 26, and the upper end of the load-bearing tray 1 is provided with a plurality of groups of zipper assemblies adapted to the number of the tripods 3, each group of zipper assemblies includes two left and right oppositely arranged draw hooks 11, and the two draw hooks 11 can be respectively locked with the locking hooks 14 on the two legs 12 of the same tripod 3;

[0042] A plurality of universal wheels 9 are provided at the lower end of the load-bearing tray 1;

[0043] The left and right sides of the load-bearing tray 1 are connected with a stabilizing assembly that can move up and down relative to the load-bearing tray 1. When the stabilizing assembly is located at the lowest position, the plurality of universal wheels 9 are separated from the ground.

[0044] In this embodiment, the load-bearing tray 1 is used to load workpieces, semi-finished products, finished products and shipping finished products. It can be stamped from a 3MM thick steel plate and distributed in a field-shaped structure. The upper ends of the two legs 12 in each tripod 3 are connected together, and the lower ends of the two legs 12 are respectively clamped on the two positioning squares 25, and then the hook 11 on the load-bearing tray 1 is locked on the locking hook 14, so that multiple tripods 3 can be quickly installed.

[0045] In application, when the present invention is needed to load and unload goods or stop in the carriage, the stabilizing assembly is driven so that the stabilizing assembly can move downward. During the downward movement, the load-bearing tray 1 is gradually lifted upward until the universal wheel 9 is separated from the ground, and then the support frame 2 is moved so that the pulling means 7 is fixed in the anti-support fixture 5. At this time, the stop hook 8 is in close contact with the ground to achieve anti-support for the load-bearing tray 1. In this way, the position of the shelf car can be fixed to prevent it from moving in this state. When the invention is needed to circulate, the position of the stabilizing assembly is reset so that the stabilizing assembly can move upward until the universal wheel 9 is in contact with the ground again, and then the locking effect of the anti-support fixture 5 on the pulling means 7 is released, and the pulling means 7 is moved so that the stop hook 8 is separated from the ground. Since the stop hook 8 can cooperate with the lifting earring 4, it can directly act on the pulling means 7 to realize the movement of the shelf car. When it is necessary to use a lifting device to transport the shelf car with the car and goods, the lifting rope can be directly connected to the lifting earring assembly.

[0046] It can be seen that the present invention changes the single-function design of traditional transportation auxiliary tools. It can replace the fixed frame for process flow or temporary stacking during deep processing of workpieces, and directly enter the lifting equipment (forklift or crane) with the car and goods after processing for fast and stable loading, transportation and unloading. It greatly saves labor costs, packaging costs and handling costs in the circulation operations in the production link. At the same time, it also greatly reduces material loss and labor injury rate in manual operations. Example

[0047] like Figure 4 As shown, in order to achieve the locking fit between the counter-support fixing member and the pulling means, this embodiment makes the following further limitations on the basis of Embodiment 1: the counter-support fixing member 5 includes a fixing member and an adjusting rod 17, the fixing member has a fixed section 16 connected to the load-bearing tray 1 and a movable section 27 with one end hinged to the top end of the fixed section 16, the lower end of the adjusting rod 17 can pass through the other end of the movable section 27 and the upper and lower end surfaces of the fixed section in sequence, and is threadedly fitted with the fixed section 16.

[0048] When the present invention is used, the movable section 27 is rotated to expand the area between the movable section 27 and the fixed section 16, and the pulling means 7 is placed in the area. Then, the movable section 27 is reset, and the adjusting rod 17 passes through the fixed section 16 to lock the pulling means 7.

[0049] In order to improve the stability of the shelf truck when it is fixed, preferably, a ground pad 18 is also provided at the stop hook 8. When loading and unloading goods or stopping in the carriage, the ground pad 18 is directly in contact with the ground, so that the gravity carried by the load-bearing tray 1 will be transferred to the ground pad 18, thereby achieving a stabilizing effect.

[0050] In order to improve the stability of the multiple tripods 3 on the load-bearing tray 1, preferably, each of the legs 12 of the multiple tripods 3 is provided with a plurality of through openings 19 penetrating the front and rear end surfaces thereof;

[0051] It also includes a plurality of reinforcing square passages 20 , which can sequentially penetrate through the openings 19 of a plurality of tripods 3 located on the same side leg 12 and at the same horizontal line.

[0052] In this way, shaking and vibration of each tripod when bearing weight can be effectively prevented. Example

[0053] In order to facilitate the up and down movement of the stabilizing assembly relative to the load-bearing tray 1, this embodiment makes the following further limitations on the basis of Embodiment 1: the stabilizing assembly includes a fixing frame 28, a stabilizing frame 10 and a handle 13;

[0054] The fixing frame 28 is connected to the load-bearing tray 1, and a positioning cylinder 29 is also provided on the fixing frame 28. The top end of the fixing frame 28 is hinged to the bottom end of the handle 13;

[0055] The stabilizing frame 10 has a positioning rod 31 that cooperates with the positioning cylinder 29. The bottom end of the positioning rod 31 is fixedly connected with a support member 32 that can contact the ground. The top end of the positioning rod 31 is hinged with a connecting member 33. The hinge point of the connecting member 33 and the positioning rod 31 is lower than the hinge point of the handle 13 and the fixing frame 28.

[0056] The free end of the connecting member 33 is hinged to the handle 13 , and the hinge point of the two is located above the hinge point of the fixing frame 28 and the handle 13 .

[0057] In the present invention, the free end of the rotating handle 13 can drive the positioning rod 31 to move up and down relative to the load-bearing tray 1, so that the support member 32 can be touched or off the ground. When the support member 32 touches the ground, the load-bearing tray 1 can be effectively prevented from moving during operation; when the support member 32 is off the ground and the universal wheel 9 touches the ground, the load-bearing tray 1 can be moved under the action of external force.

[0058] Preferably, support columns 15 are passed through the two ends of the support member 32, the support columns 15 are threadedly matched with the support member 32, and a ground contact pad 30 is provided at the bottom end of the support column 15. Since the height of the load-bearing tray 1 in different shelf trucks is different, turning the handle 13 to the extreme position does not necessarily make the support member 32 touch the ground. For this reason, the present invention is designed with a support column 15 that can move up and down relative to the support member 32, so that the position of the support column 15 relative to the support member 32 can be adjusted according to needs.

[0059] In order to prevent the items on the load-bearing tray 1 from sliding and vibrating, preferably, the upper end surface of the load-bearing tray 1 is further provided with a plurality of anti-dropping blocks 21 arranged in the left and right directions, the upper end surface of the anti-dropping block 21 is arranged in an inclined surface, and the height of the anti-dropping block 21 gradually increases from the direction close to the positioning square hole 25 to the direction away from the positioning square hole 25. In this way, the items can be prevented from sliding off the load-bearing tray 1.

[0060] In order to avoid overloading and affecting the service life of the shelf truck, preferably, a weighing assembly is also provided on the load-bearing tray 1, and the weighing assembly includes a display 22 and a weighing sensor 23 connected to the display 22. The weighing sensor 23 can be a four-corner weighing sensor.

[0061] In order to reduce the probability of damaging the load-bearing tray, preferably, the outer side surfaces at the four corners of the load-bearing tray 1 are also connected with anti-collision rubber corner guards 24.

[0062] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific embodiments of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, other embodiments obtained without departing from the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. Portable heavy-duty shelf truck, characterized by: It comprises a load-bearing tray (1), a support frame (2) and a plurality of tripods (3); A lifting earring assembly is provided on the front and rear ends of the load-bearing tray (1), the lifting earring assembly comprising two lifting earrings (4) arranged opposite to each other on the left and right, and a counter-support fixing member (5) is connected to the front end surface or the rear end surface of the load-bearing tray (1); The support frame (2) has a pulling means (7) that is locked with the counter-support fixing member (5), and the two ends of the pulling means (7) are respectively bent to form support sections (6), and the free ends of the two support sections (6) respectively pass through two hanging earrings (4) in the same hanging earring assembly, and the ends are bent to form stop hooks (8) that can cooperate with the hanging earrings (4); The upper end of the load-bearing tray (1) is provided with two positioning square tubes (25) arranged in a front-to-rear direction, and each tripod (3) has two legs (12), and the bottoms of the two legs (12) are provided with positioning grooves (26) that can be clamped on the two positioning square tubes (25) respectively; The bottoms of the two legs (12) are each provided with a locking hook (14) located above the positioning groove (26); the upper end of the load-bearing tray (1) is provided with a plurality of groups of zipper assemblies corresponding to the number of the tripods (3); each group of zipper assemblies comprises two left and right oppositely arranged draw hooks (11); the two draw hooks (11) can be respectively locked with the locking hooks (14) on the two legs (12) of the same tripod (3); A plurality of universal wheels (9) are provided at the lower end of the load-bearing tray (1); The left and right sides of the load-bearing tray (1) are both connected to a stabilizing assembly that can move up and down relative to the load-bearing tray (1); when the stabilizing assembly is in the lowest position, the plurality of universal wheels (9) are detached from the ground; The counter-support fixing member (5) comprises a fixing member and an adjusting rod (17), wherein the fixing member comprises a fixing section (16) connected to the load-bearing tray (1) and a movable section (27) having one end hinged to the top end of the fixing section (16), and the lower end of the adjusting rod (17) can sequentially penetrate the other end of the movable section (27) and the upper and lower end surfaces of the fixing section, and is threadably engaged with the fixing section (16).

2. The portable heavy-duty shelf vehicle according to claim 1 is characterized in that: A ground contact pad (18) is also provided at the stop hook (8).

3. The portable heavy-duty shelf vehicle according to claim 1 is characterized in that: Each of the legs (12) of the plurality of tripods (3) is provided with a plurality of through openings (19) penetrating the front and rear end surfaces thereof; It also includes a plurality of reinforced square passages (20), which can sequentially penetrate through openings (19) of a plurality of tripods (3) located on the same side leg (12) and at the same horizontal line position.

4. The portable heavy-duty shelf vehicle according to claim 1 is characterized in that: The stabilizing assembly comprises a fixing frame (28), a stabilizing frame (10) and a handle (13); The fixing frame (28) is connected to the load-bearing tray (1), and a positioning cylinder (29) is also provided on the fixing frame (28). The top end of the fixing frame (28) is hinged to the bottom end of the handle (13); The stabilizing frame (10) comprises a positioning rod (31) cooperating with the positioning cylinder (29), the bottom end of the positioning rod (31) is fixedly connected with a support member (32) capable of contacting the ground, the top end of the positioning rod (31) is hinged with a connecting member (33), and the hinge point between the connecting member (33) and the positioning rod (31) is lower than the hinge point between the handle (13) and the fixing frame (28); The free end of the connecting member (33) is hinged on the handle (13), and the hinge point of the two is located above the hinge point of the fixing frame (28) and the handle (13).

5. The portable heavy-duty shelf vehicle according to claim 4 is characterized in that: Support columns (15) are passed through the two ends of the support member (32), the support columns (15) are threadedly matched with the support member (32), and a ground contacting cushion seat (30) is provided at the bottom end of the support column (15).

6. The portable heavy-duty shelf vehicle according to claim 1 is characterized in that: The upper end surface of the load-bearing tray (1) is further provided with a plurality of anti-slip blocks (21) arranged in the left and right directions. The upper end surfaces of the anti-slip blocks (21) are arranged in an inclined surface, and the height of the anti-slip blocks (21) gradually increases from the direction close to the positioning square passage (25) to the direction away from the positioning square passage (25).

7. The portable heavy-duty shelf vehicle according to any one of claims 1 to 6, characterized in that: The load-bearing tray (1) is also provided with a weighing assembly, which comprises a display (22) and a weighing sensor (23) connected to the display (22).

8. The portable heavy-duty shelf vehicle according to claim 7 is characterized in that: The outer side surfaces at the four corners of the load-bearing tray (1) are also connected to anti-collision rubber corner guards (24).

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