Building construction material conveying device and material conveying method

Abstract

The invention discloses a building construction material transporting device and a material transporting method, relates to the technical field of material transporting devices, and aims to solve the problem that a large amount of dust is easy to raise when part of existing building materials are transported. According to the technical scheme, the device is characterized by comprising an outer transport vehicle and an inner transport vehicle detachably connected with the outer transport vehicle, the outer transport vehicle is provided with a storage cavity allowing the inner transport vehicle to be placed therein, the top of the storage cavity is provided with an upper opening allowing materials to fall onto the inner transport vehicle, and the outer transport vehicle is provided with a blocking part allowing the materials to pass and keeping the upper opening closed; the side wall of the containing cavity is provided with a large side opening allowing the inner transport vehicle to be placed in, and a small side opening is formed between the plugging part and the outer transport vehicle in a surrounding mode. Through the arrangement of the structure, stable carrying of building materials is achieved, and the situation that dust rises in the carrying process of the building materials is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of material transport devices, and more specifically, to a material transport device and a material transport method for construction. Background Art

[0002] Material transport devices are usually used to transport various types of materials, so that the materials can be moved in space, making it easier for people to access the materials.

[0003] Building materials are various materials used in construction projects. There are many types of building materials, which can be roughly divided into: inorganic materials, organic materials and composite materials. Building materials usually need to be transported in construction. When decorating a house, materials such as gypsum powder and cement are usually used. In the prior art, when transporting cement and gypsum powder, a wheelbarrow is usually used to push the materials. When cement and other materials are unloaded from the vehicle, dust is usually easily raised. When too much dust is raised, it is not only easy to pollute the surrounding environment, but also causes the transporters to inhale more dust into their bodies, damaging their health. Therefore, a structure is provided to solve the problem that a large amount of dust is easily raised when some existing building materials are transported.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a material transport device and a material transport method for construction.

[0006] The above-mentioned technical purpose of the present invention is achieved through the following technical scheme: the construction material transport device comprises an outer transport cart and an inner transport cart detachably connected thereto, the outer transport cart is provided with a storage cavity for the inner transport cart to be placed in, the top of the storage cavity is provided with an upper opening for materials to fall onto the inner transport cart, the outer transport cart is provided with a blocking portion for materials to pass through and keep the upper opening closed, the side wall of the storage cavity is provided with a large side opening for the inner transport cart to be placed in, a small side opening is surrounded by the blocking portion and the outer transport cart, a blocking plate for blocking the small side opening is fixedly connected to the outer transport cart, and the blocking plate and the outer transport cart are provided with a limiting portion for limiting the mutual sliding of the outer transport cart and the inner transport cart.

[0007] The present invention is further configured as follows: the blocking portion includes a small fixed plate fixedly connected to the outer transport vehicle and a large movable plate hinged to the outer transport vehicle, the width of the small fixed plate is smaller than the large movable plate, and a plurality of first springs are provided between the large movable plate and the outer transport vehicle to maintain the top surface of the large movable plate against the bottom surface of the small fixed plate.

[0008] The present invention is further configured as follows: a plurality of first connecting rods distributed in an array along its length direction are fixedly connected to the large movable plate on the side close to the hinge point, a plurality of first connecting blocks facing the first connecting rods are fixedly connected to the outer transport vehicle, and the two ends of the first spring are fixedly connected to the first connecting rod and the first connecting block respectively.

[0009] The present invention is further configured as follows: the limiting part includes a pull handle fixedly connected to the sealing plate and a limiting ring fixedly connected to the outer transport vehicle, the pull handle is slidably connected with a symmetrically arranged limiting rod, a second spring is fixedly connected between the limiting rod and the pull handle for pushing the limiting rod to penetrate into the limiting ring, a first flexible member is fixedly connected between the two limiting rods, the limiting rod away from the side of the first flexible member is provided with a guiding inclined surface toward the sealing plate, the first flexible member is fixedly connected with a second flexible member, a clearance groove is penetrated through the pull handle for the first flexible member and the second flexible member to penetrate, a guide fillet that can be counteracted with the first flexible member is provided at the notch of the clearance groove close to the side of the sealing plate, and a pull block is fixedly connected to the second flexible member away from the side of the first flexible member.

[0010] The present invention is further configured as follows: the inner transport vehicle includes a vehicle plate fixedly connected to the blocking plate, a first block is fixedly connected to the vehicle plate on the side away from the blocking plate, the vehicle plate is provided with a second block for sliding vertically, the bottom of the second block is fixedly connected to a first sliding rod for sliding along its length direction, the bottom of the first sliding rod is fixedly connected to a first wheel, the first sliding rod is sleeved with a third spring whose two ends respectively resist the first wheel and the vehicle plate, a limiting cavity is surrounded by the first block, the second block, the vehicle plate and the blocking plate, and the top surfaces of the first block and the second block are both configured as arc surfaces.

[0011] The present invention is further configured as follows: an elastic deformation block that is against the bottom surface of the vehicle plate is fixedly connected to the inner bottom surface of the outer transport vehicle, a plurality of second sliding rods that slide vertically are provided on the inner bottom surface of the outer transport vehicle, a guide plate is fixedly connected to the top of the plurality of second sliding rods, a fourth spring is sleeved on the second sliding rod, the two ends of which are respectively against the outer transport vehicle and the guide plate, a limit block that is against the bottom surface of the vehicle plate is fixedly connected to the second sliding rod at the bottom, and a guide groove for the guide plate to penetrate is provided at the bottom of the vehicle plate.

[0012] The present invention is further configured as follows: a plurality of symmetrically arranged universal wheels are fixedly connected to the bottom of the outer transport vehicle.

[0013] The present invention is further configured as follows: the material transporting method of the construction material transporting device is used for the use of the above-mentioned construction material transporting device, comprising:

[0014] Step 1: Install the inner transport vehicle in the storage cavity of the outer transport vehicle by means of the limiting part;

[0015] Step 2: Push the material onto the small fixed plate first, then gradually push the material onto the large movable plate, and use the gravity exerted on the material to push the large movable plate and drop it onto the inner transport vehicle;

[0016] Step 3: Under the action of the elastic force generated by the elastically deformed first spring, the large movable plate is reset and fits with the bottom of the small fixed plate;

[0017] Step 4: After putting in a sufficient amount of materials, use the handle to pull the entire structure to move and transport;

[0018] Step 5: When the entire structure moves to the desired position, the limiting portion is opened and the inner transport vehicle and the materials placed thereon are taken out of the storage cavity;

[0019] Step 6: Remove the materials from the inner transport cart and reinstall the inner transport cart on the outer transport cart.

[0020] In summary, the present invention has the following beneficial effects:

[0021] The outer transport vehicle is provided with a blocking portion for materials to pass over and keep the upper opening closed, the side wall of the storage chamber is provided with a large side opening for the inner transport vehicle to be placed in, a small side opening is arranged between the blocking portion and the outer transport vehicle, and a blocking plate for blocking the small side opening is fixedly connected to the outer transport vehicle, and under the action of the blocking plate and the blocking portion, the upper opening and the small side opening can be stably blocked, and then when the dust-filled material is fed into the storage chamber, the dust can be stably blocked by the blocking plate and the blocking portion when it is raised, thereby reducing the amount of dust that passes over the blocking plate and the blocking portion and floats out of the outer transport vehicle, reducing the dust flying everywhere and reducing the damage to the body of the transporting personnel caused by the flying dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0024] Figure 3 The cross-sectional view of the present invention Figure 1 ;

[0025] Figure 4 for Figure 3 The enlarged view of point B in the middle;

[0026] Figure 5 The cross-sectional view of the present invention Figure 2 ;

[0027] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0028] Figure 7 The cross-sectional view of the present invention Figure 2 ;

[0029] Figure 8 for Figure 7 Enlarged view of point D in the middle.

[0030] In the figure: 1. outer transport vehicle; 2. inner transport vehicle; 3. storage cavity; 4. upper opening; 5. large side opening; 6. small side opening; 7. blocking plate; 8. small fixed plate; 9. large movable plate; 10. first spring; 11. first connecting rod; 12. first connecting block; 13. pull handle; 14. limiting ring; 15. limiting rod; 16. second spring; 17. first flexible member; 18. guide slope; 19. second flexible member; 20. give way groove; 21. pull block; 22. vehicle plate; 23. first block; 24. second block; 25. first sliding rod; 26. first wheel; 27. third spring; 28. limiting cavity; 29. ​​elastic deformation block; 30. second sliding rod; 31. guide plate; 32. fourth spring; 33. limiting block; 34. guide groove; 35. universal wheel. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] A material transport device for construction, such as Figure 1-Figure 3As shown, it includes an outer transport cart 1 and an inner transport cart 2 detachably connected thereto, with the help of the inner transport cart 2 and the outer transport cart 1, stable transportation of materials is achieved, ensuring that the function of the overall structure to transport materials can be stably achieved, the outer transport cart 1 is provided with a storage chamber 3 for the inner transport cart 2 to be placed in, the top of the storage chamber 3 is provided with an upper opening 4 for materials to fall onto the inner transport cart 2, the outer transport cart 1 is provided with a blocking portion for materials to pass through and keep the upper opening 4 closed, the side wall of the storage chamber 3 is provided with a large side opening 5 for the inner transport cart 2 to be placed in, a small side opening 6 is surrounded by the blocking portion and the outer transport cart 1, and a blocking plate 7 for blocking the small side opening 6 is fixedly connected to the outer transport cart 1, and under the action of the blocking plate 7 and the blocking portion, the upper opening 4 and the small side opening 6 can be stably blocked, thereby When the material is fed into the storage chamber 3, when the dust is raised, it can be stably blocked by the blocking plate 7 and the blocking part, reducing the amount of dust that passes over the blocking plate 7 and the blocking part and floats out of the outer transport vehicle 1, reducing the dust flying around and reducing the damage to the body of the transporter caused by the flying dust. The blocking plate 7 and the outer transport vehicle 1 are provided with a limiting part for limiting the mutual sliding of the outer transport vehicle 1 and the inner transport vehicle 2. Under the action of the limiting part, the stable position limit of the outer transport vehicle 1 and the inner transport vehicle 2 after installation is achieved, ensuring that the outer transport vehicle 1 and the inner transport vehicle 2 can be maintained in a relatively stable position, ensuring that the bagged material put in from the upper opening 4 can stably fall onto the inner transport vehicle 2, and at the same time ensuring that the position of the blocking plate 7 and the sealing function it can produce are more stable, reducing the amount of raised dust floating out of the storage chamber 3.

[0033] like Figure 1 and Figure 2As shown, the blocking portion includes a small fixed plate 8 fixedly connected to the outer transport vehicle 1 and a large movable plate 9 hinged to the outer transport vehicle 1. The small fixed plate 8 and the outer transport vehicle 1 are fixed by welding. The width of the small fixed plate 8 is smaller than the large movable plate 9. This arrangement allows the material that moves along the small fixed plate 8 to the large movable plate 9 and falls onto the inner transport vehicle 2 to be better offset toward the center position of the inner transport vehicle 2, so that the material that falls into the storage chamber 3 can be better received by the inner transport vehicle 2. The large movable plate 9 and the outer transport vehicle 1 are fixed to each other. A plurality of first springs 10 are provided for maintaining the top surface of the large movable plate 9 against the bottom surface of the small fixed plate 8. A plurality of first connecting rods 11 distributed in an array along the length direction are fixedly connected to the large movable plate 9 near the hinge point. A plurality of first connecting blocks 12 facing the first connecting rods 11 are fixedly connected to the outer transport vehicle 1. The two ends of the first spring 10 are fixedly connected to the first connecting rods 11 and the first connecting blocks 12 by welding, respectively. When the large movable plate 9 near the small fixed plate 8 is pressed onto the large movable plate 9 by blanking, the large movable plate 9 The material bag is then loaded onto the storage chamber 3 and the inner transport vehicle 2, and the loading and unloading of the material bag is then stopped.

[0034] like Figure 5-Figure 8As shown, the limiting portion includes a pull handle 13 fixedly connected to the blocking plate 7 by welding and a limiting ring 14 fixedly connected to the outer transport vehicle 1 by welding. A symmetrically arranged limiting rod 15 is slidably connected to the pull handle 13. A second spring 16 for pushing the limiting rod 15 into the limiting ring 14 is fixedly connected between the limiting rod 15 and the pull handle 13 by welding. A first flexible member 17 is fixedly connected between the two limiting rods 15. The first flexible member 17 is set as a nylon rope. A guiding inclined surface 18 facing the blocking plate 7 is provided on the limiting rod 15 away from the first flexible member 17. The guiding inclined surface 18 is against the limiting ring 14. At this time, under the action of the guiding inclined surface 18, the limiting rod 15 can be first pushed to move toward the side away from the limiting ring 14. During this process, the second spring 16 is in a stretched and deformed state. When the limiting rod 15 moves to the ring hole facing the limiting ring 14, under the action of the elastic force generated by the elastically deformed second spring 16, the limiting rod 15 will penetrate into the ring hole of the limiting ring 14. With the help of the restraint between the limiting rod 15 and the limiting ring 14, the pull handle 13, the blocking plate 7 and the inner transport trolley 2 are stably limited, ensuring that the relative position between the inner transport trolley 2 and the outer transport trolley 1 remains stable, and then the pull handle 13 can be used to pull the structure as a whole to move;

[0035] like Figure 5-Figure 8 As shown, the first flexible member 17 is fixedly connected to the second flexible member 19, and the second flexible member 19 is set as a nylon rope. The pull handle 13 is penetrated with a clearance groove 20 for the first flexible member 17 and the second flexible member 19 to penetrate. The notch of the clearance groove 20 close to the side of the blocking plate 7 is provided with a guide fillet that can abut against the first flexible member 17. With the help of the guide fillet, the first flexible member 17 can be stably guided during the sliding process in the clearance groove 20, ensuring that the sliding process of the first flexible member 17 is more stable. The second flexible member 19 on the side away from the first flexible member 17 is fixedly connected with a pull block by bonding with an adhesive. 21. The pull block 21 is set so that the user can use the pull block 21 to better apply force to the second flexible member 19. At the same time, the pull block 21 can also prevent the end of the second flexible member 19 away from the side of the first flexible member 17 from slipping out of the clearance groove 20, ensuring that the second flexible member 19 is in a more stable state in the clearance groove 20. By applying force to the first flexible member 17, force can be applied to the limiting rods 15 on both sides thereof, so that the limiting rods 15 approach each other and pass through the limiting ring 14, so that the limiting function of the limiting part is gradually lost, so that the inner transport vehicle 2 can be stably removed from the outer transport vehicle 1.

[0036] like Figure 1-Figure 5As shown, the inner transport vehicle 2 includes a vehicle plate 22 fixedly connected to the blocking plate 7 by welding, a first stopper 23 is fixedly connected to the vehicle plate 22 on the side away from the blocking plate 7 by welding, the vehicle plate 22 is provided with a second stopper 24 that slides vertically, the bottom of the second stopper 24 is fixedly connected to a first sliding rod 25 that slides along its length direction, the bottom of the first sliding rod 25 is fixedly connected to a first wheel 26 by welding, and the first sliding rod 25 is sleeved with two ends respectively connected to the first wheel 26 and the vehicle plate 22 is resisted by a third spring 27, and a limiting cavity 28 is surrounded by the first stop block 23, the second stop block 24, the vehicle plate 22 and the blocking plate 7. With the help of the set limiting cavity 28, the first material falling onto the inner transport vehicle 2 can be stably placed. The top surfaces of the first stop block 23 and the second stop block 24 are both set as arc surfaces. With the help of the first wheel 26, the inner transport vehicle 2 is moved, so that the inner transport vehicle 2 can pass through the outer transport vehicle 1 and drive the material thereon to move, making the unloading process of the material on the inner transport vehicle 2 more convenient.

[0037] like Figure 1-Figure 5 As shown, an elastic deformation block 29 that abuts against the bottom surface of the vehicle plate 22 is fixedly connected to the inner bottom surface of the outer transport vehicle 1 by means of adhesive bonding. The elastic deformation block 29 is set to rubber, and the good elastic deformation performance of rubber is utilized to ensure that the elastic deformation block 29 has good and stable elastic deformation performance. A plurality of second sliding rods 30 that slide vertically are provided on the inner bottom surface of the outer transport vehicle 1. A sliding hole for the second sliding rod 30 to penetrate and slide is opened on the outer transport vehicle 1. The sliding connection between the second sliding rod 30 and the outer transport vehicle 1 is realized by the sliding of the second sliding rod 30 in the sliding hole. The tops of the plurality of second sliding rods 30 are fixedly connected to guide plates 31 by means of welding. The second sliding rod 30 is sleeved with a fourth spring 32 whose two ends respectively abut against the outer transport vehicle 1 and the guide plate 31. When the material falls onto the vehicle plate 22 The third spring 27, the fourth spring 32 and the elastic deformation block 29 will be squeezed and deformed during the process, and the elastically deformed third spring 27, the fourth spring 32 and the elastic deformation block 29 are used to achieve stable buffering of the process of materials falling onto the vehicle plate 22. The second sliding rod 30 at the bottom is fixedly connected with a limit block 33 that abuts against the bottom surface of the vehicle plate 22 by welding. The limit block 33 is used to achieve stable limitation of the position of the second sliding rod 30. A guide groove 34 for the guide plate 31 to penetrate is provided at the bottom of the vehicle plate 22. The guide plate 31 and the guide groove 34 work together to achieve stable guiding and limitation of the external transport vehicle 1 and the internal transport vehicle 2 entering and passing through the storage chamber 3, so that the process of the external transport vehicle 1 entering and passing through the internal transport vehicle 2 is more stable.

[0038] like Figure 1As shown, the bottom of the external transport vehicle 1 is fixedly connected with a plurality of symmetrically arranged universal wheels 35 by means of bolt locking. The convenient steering feature of the universal wheels 35 makes the movement and rotation of the entire structure more convenient, thereby making the process of transporting materials by the entire structure more convenient.

[0039] The material transporting method of the construction material transporting device is as follows: Figure 1-Figure 8 As shown, the use of the above-mentioned construction material transport device includes:

[0040] Step 1: Install the inner transport vehicle 2 in the storage chamber 3 of the outer transport vehicle 1 by means of the limiting part;

[0041] Step 2: Push the material onto the small fixed plate 8 first, then gradually push the material onto the large movable plate 9, and use the gravity exerted on the material to push the large movable plate 9 and drop it onto the inner transport vehicle 2;

[0042] Step 3: Under the action of the elastic force generated by the elastically deformed first spring 10, the large movable plate 9 is reset and fits with the bottom of the small fixed plate 8;

[0043] Step 4: After a sufficient amount of materials are put in, the entire structure is pulled by the handle 13 to move and transport;

[0044] Step 5: When the entire structure is moved to the desired position, the limiting portion is opened and the inner transport vehicle 2 and the materials placed thereon are taken out of the storage chamber 3;

[0045] Step 6: Remove the materials from the inner transport cart 2 and reinstall the inner transport cart 2 on the outer transport cart 1.

[0046] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A material transport device for construction, characterized in that: The invention comprises an outer transport vehicle (1) and an inner transport vehicle (2) detachably connected thereto, wherein the outer transport vehicle (1) is provided with a storage chamber (3) for the inner transport vehicle (2) to be placed therein, the top of the storage chamber (3) is provided with an upper opening (4) for materials to fall onto the inner transport vehicle (2), the outer transport vehicle (1) is provided with a blocking portion for allowing materials to pass through and keeping the upper opening (4) closed, the side wall of the storage chamber (3) is provided with a large side opening (5) for the inner transport vehicle (2) to be placed therein, a small side opening (6) is provided between the blocking portion and the outer transport vehicle (1), a blocking plate (7) for blocking the small side opening (6) is fixedly connected to the outer transport vehicle (1), and a limiting portion for limiting the mutual sliding of the outer transport vehicle (1) and the inner transport vehicle (2) is provided on the blocking plate (7) and the outer transport vehicle (1).

2. A material transport device for construction according to claim 1, characterized in that: The blocking portion comprises a small fixed plate (8) fixedly connected to the outer transport vehicle (1) and a large movable plate (9) hinged to the outer transport vehicle (1), the width of the small fixed plate (8) being smaller than that of the large movable plate (9), and a plurality of first springs (10) for maintaining the top surface of the large movable plate (9) against the bottom surface of the small fixed plate (8) are provided between the large movable plate (9) and the outer transport vehicle (1).

3. A material transport device for construction according to claim 2, characterized in that: The large movable plate (9) near the hinge point is fixedly connected to a plurality of first connecting rods (11) distributed in an array along its length direction, the outer transport vehicle (1) is fixedly connected to a plurality of first connecting blocks (12) facing the first connecting rods (11), and the two ends of the first spring (10) are fixedly connected to the first connecting rods (11) and the first connecting blocks (12), respectively.

4. A material transport device for construction according to claim 3, characterized in that: The limiting portion comprises a pull handle (13) fixedly connected to the blocking plate (7) and a limiting ring (14) fixedly connected to the outer transport vehicle (1); a symmetrically arranged limiting rod (15) is slidably connected to the pull handle (13); a second spring (16) is fixedly connected between the limiting rod (15) and the pull handle (13) for pushing the limiting rod (15) to penetrate into the limiting ring (14); a first flexible member (17) is fixedly connected between the two limiting rods (15); the limiting rod (15) on the side away from the first flexible member (17) is 5) is provided with a guiding inclined surface (18) toward the sealing plate (7), the first flexible member (17) is fixedly connected to the second flexible member (19), the pull handle (13) is penetrated by a clearance groove (20) for the first flexible member (17) and the second flexible member (19) to penetrate, the notch of the clearance groove (20) close to the sealing plate (7) is provided with a guiding fillet that can abut against the first flexible member (17), and the second flexible member (19) away from the first flexible member (17) is fixedly connected to a pull block (21).

5. A material transport device for construction according to claim 2, characterized in that: The inner transport vehicle (2) comprises a vehicle plate (22) fixedly connected to the blocking plate (7), a first stopper (23) being fixedly connected to the vehicle plate (22) on the side away from the blocking plate (7), the vehicle plate (22) being provided with a second stopper (24) which slides in the vertical direction, a first sliding rod (25) which slides in the length direction thereof is fixedly connected to the bottom of the second stopper (24), a first wheel (26) being fixedly connected to the bottom of the first sliding rod (25), a third spring (27) being sleeved on the first sliding rod (25) with two ends respectively abutting against the first wheel (26) and the vehicle plate (22), a limiting cavity (28) being surrounded by the first stopper (23), the second stopper (24), the vehicle plate (22) and the blocking plate (7), and the top surfaces of the first stopper (23) and the second stopper (24) are both arranged as arc surfaces.

6. A material transport device for construction according to claim 5, characterized in that: An elastic deformation block (29) is fixedly connected to the inner bottom surface of the outer transport vehicle (1) and is against the bottom surface of the vehicle plate (22). A plurality of second sliding rods (30) that slide vertically are provided on the inner bottom surface of the outer transport vehicle (1). A guide plate (31) is fixedly connected to the top of the plurality of second sliding rods (30). A fourth spring (32) is sleeved on the second sliding rod (30) and has two ends that respectively abut against the outer transport vehicle (1) and the guide plate (31). A limit block (33) that abuts against the bottom surface of the vehicle plate (22) is fixedly connected to the second sliding rod (30) at the bottom. A guide groove (34) for the guide plate (31) to penetrate is provided at the bottom of the vehicle plate (22).

7. A material transport device for construction according to claim 1, characterized in that: The bottom of the outer transport vehicle (1) is fixedly connected with a plurality of symmetrically arranged universal wheels (35).

8. A material transporting method of a construction material transporting device, used for using the construction material transporting device according to any one of claims 1 to 7, characterized in that: include, Step 1: Install the inner transport vehicle (2) in the storage chamber (3) of the outer transport vehicle (1) by means of a limiting portion; Step 2: Push the material onto the small fixed plate (8) first, then gradually push the material onto the large movable plate (9), and use the gravity exerted on the material to push the large movable plate (9) and drop it onto the inner transport vehicle (2); Step 3: Under the action of the elastic force generated by the elastically deformed first spring (10), the large movable plate (9) is reset and fits with the bottom of the small fixed plate (8); Step 4: After a sufficient amount of materials are put in, the entire structure is pulled by the handle (13) to move and transport; Step 5: When the entire structure moves to the desired position, the limiting portion is opened and the inner transport vehicle (2) and the materials placed thereon are taken out from the storage chamber (3); Step 6: Remove the materials from the inner transport vehicle (2) and reinstall the inner transport vehicle (2) on the outer transport vehicle (1).

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