Transfer trolley for building construction materials

Abstract

The invention provides a transfer trolley for building construction materials, which not only can realize dumping unloading, but also can realize grabbing unloading, so that the problems of single unloading mode and limited adaptability of an existing transfer device are solved, and the transfer trolley relates to the technical field of building construction. A transfer trolley for building construction materials comprises a trolley frame provided with rolling wheels and a transfer box arranged on the trolley frame, and the transfer box is arranged on the trolley frame through a turnover structure so that the transfer box can be turned over to dump and unload materials. The frame is provided with an unloading control mechanism which is connected with the transfer box to push the transfer box to turn over so as to dump and unload; and a grabbing and unloading mechanism is further mounted on the frame. According to the transfer trolley, the unloading mode can be flexibly selected according to the characteristics of transferred materials, the adaptability of the transfer trolley is better, and the building construction efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a transfer vehicle for building construction materials. Background Art

[0002] Construction is a production activity carried out by people using various building materials, mechanical equipment and specific design blueprints in a certain space and time to build various building products. This process includes the entire production process from construction preparation, groundbreaking to project completion acceptance, which involves construction preparation, construction organization design and management, earthwork engineering, blasting engineering, foundation engineering, steel engineering, formwork engineering, scaffolding engineering, concrete engineering, prestressed concrete engineering, masonry engineering, steel structure engineering, wood structure engineering, structural installation engineering and many other tasks.

[0003] The main functions of construction include: Realizing engineering design: Construction is the specific implementation process of realizing engineering design. Through reasonable construction technology and construction means, various construction parameters can be effectively controlled to ensure that the quality of the project meets the standards. Promoting economic development: As a complex and large industrial system, construction involves cooperation and coordination among various industries. In the construction process, a large amount of manpower, material and financial resources are required, which promotes employment and the development of related industries. Promoting scientific and technological innovation: In the construction process, advanced process equipment and technical means need to be applied to promote scientific and technological progress and innovation. Improving the image of the city: Buildings and engineering facilities in the construction process are an important part of the city. The quality and effect of construction are directly related to the shaping and improvement of the city's image.

[0004] Although traditional construction transfer equipment is equipped with a discharge mechanism, the discharge mechanism can only realize a single mode of discharge, such as: the utility model patent with application number CN202322754275.1 discloses a transfer device for construction engineering, including a mobile frame, the upper surface of the mobile frame is equipped with a transfer box that can be rotated horizontally, and the right end of the transfer box is opened, the inner side of the transfer box is close to the left end and a push plate that can be moved in the left and right directions is installed, and the right end opening of the transfer box is equipped with a door panel that can be rotated and opened, and the front and rear sides of the transfer box are equipped with a driving mechanism that drives the push plate to move left and right. The transfer device pushes the material out of the transfer box by the push plate to discharge, which is mainly suitable for materials such as sand and gravel that are not afraid of collision and damage. However, for materials that are easily deformed and damaged, such as bricks and steel bars, it is easy to cause the materials to squeeze and collide with each other during the unloading process, and deformation or damage is found. There is a problem of inapplicability, and manual unloading is often required. During the construction process, the transfer equipment often involves various types of materials, such as sand, gravel, cement, bricks, steel bars, etc. These materials have different shapes, weights, volumes and characteristics, and the unloading requirements for the transfer equipment are also different. Relying only on a single-function unloading mechanism for unloading has limited adaptability to different types of materials, which not only limits the use of the device, but also is not conducive to improving construction efficiency. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a transfer vehicle for construction materials which can realize both dumping and grabbing unloading, so as to solve the problem that the existing transfer device has a single unloading mode and limited adaptability.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a transfer vehicle for construction materials, comprising a frame provided with rollers and a transfer box arranged on the frame, the transfer box adopts a flippable structure to be arranged on the frame so as to be flippable and dumped for unloading, and the frame is provided with a discharge control mechanism connected with the transfer box to push the transfer box to flip and dump for unloading;

[0007] A grabbing and unloading mechanism is also installed on the frame.

[0008] Furthermore, the grabbing and unloading mechanism includes a linear screw slide, a first drive mechanism, a second drive mechanism, a third drive mechanism, a grabbing arm, and a grabbing mechanism for grabbing materials in the transfer box;

[0009] The linear screw slide is horizontally mounted on the frame, and the first driving mechanism is in transmission connection with the screw of the linear screw slide;

[0010] The grab arm comprises a telescopic section and a cantilever, the telescopic section is arranged vertically, and the lower end is mounted on the slide of the linear screw slide;

[0011] The cantilever is horizontally arranged above the transfer box, and the extension direction of the cantilever is perpendicular to the extension direction of the linear screw slide, one end of the cantilever is rotatably connected to the upper end of the telescopic joint through a vertical rotating shaft, and a sliding block for installing a gripper mechanism is provided on the cantilever, and the sliding block is slidably connected to the cantilever along the extension direction of the cantilever;

[0012] The gripper mechanism is mounted on the sliding block;

[0013] The third driving mechanism is connected to the sliding block to drive the sliding block to slide relative to the cantilever along the extension direction of the cantilever;

[0014] The second driving mechanism is installed at the upper end of the telescopic joint and is transmission-connected to the cantilever to drive the cantilever to be connected around the rotating shaft.

[0015] Furthermore, a gripper lifting mechanism is installed on the sliding block, and the gripper mechanism is installed on the sliding block through the gripper lifting mechanism so that it can be lifted and lowered relative to the sliding block through the gripper lifting mechanism.

[0016] Furthermore, the cantilever is provided with a rack arranged along its extension direction, the sliding block is provided with a gear meshing with the rack, and the third driving mechanism is installed on the sliding block and is transmission-connected with the gear.

[0017] Furthermore, the telescopic joint includes an upper end segment, a lower end segment and a telescopic control hydraulic cylinder, the lower end of the upper end segment is inserted into the upper end of the lower end segment and slidably cooperates with the lower end segment, the lower end of the lower end segment is installed on the slide of the linear screw slide, and the telescopic control hydraulic cylinder is arranged in the lower end segment and connected to the upper end segment to drive the upper end segment to slide relative to the lower end segment to achieve telescopic movement.

[0018] Furthermore, the frame is also provided with a locking mechanism for locking the transfer box to prevent it from automatically turning over.

[0019] Furthermore, the locking mechanism includes an electric push rod and a lock hook that is engaged with the transfer box to lock the transfer box. One end of the lock hook is hinged to the frame. The electric push rod is installed on the frame and connected to the lock hook to drive the lock hook to rotate so as to engage with the transfer box and then lock the transfer box or disengage the lock hook from the transfer box.

[0020] Furthermore, a reset detection switch for detecting the position of the transfer box is provided on the frame, and the reset detection switch is electrically connected to the electric push rod; when the transfer box is reset after unloading, the reset detection switch is closed, so that the electric push rod is energized to drive the lock hook to rotate, and then the lock hook is engaged with the transfer box to lock the transfer box.

[0021] Furthermore, retractable hydraulic legs are provided on both sides of the frame.

[0022] Furthermore, a traction rod is provided on the vehicle frame, and the traction rod is connected to the vehicle frame through a universal head structure.

[0023] The beneficial effects of the present invention are as follows: the transfer vehicle for construction materials of the present invention has a transfer box 2 that adopts a flippable structure, a unloading control mechanism 3 is provided on the frame 1, and a grabbing unloading mechanism 4 is also provided, which can realize both dumping unloading and grabbing unloading, and the unloading method can be flexibly selected according to the characteristics of the transported materials. It has better adaptability and is conducive to improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the expansion joint;

[0027] Figure 4 is a structural schematic diagram of the locking mechanism;

[0028] Figure 5 It is a schematic diagram of the electric push rod control circuit;

[0029] As shown in the figure: frame 1, transfer box 2, unloading control mechanism 3, grabbing and unloading mechanism 4, reset detection switch 6, hook detection switch 7, unlocking switch 8, hydraulic support leg 9, traction rod 11, support leg 21, linear screw slide 41, first drive mechanism 42, telescopic joint 43, second drive mechanism 44, cantilever 45, rotating shaft 46, gripper mechanism 47, third drive mechanism 48, gripper lifting mechanism 49, electric push rod 51, locking hook 52, screw 411, slide 412, sliding block 451, rack 452, gear 453, lower end segment 431, upper end segment 432, telescopic control hydraulic cylinder 433. DETAILED DESCRIPTION

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1 , Figure 2As shown, a transfer vehicle for construction materials of the present invention comprises a frame 1 provided with rollers and a transfer box 2 arranged on the frame 1, the transfer box 2 is arranged on the frame 1 with a flippable structure so as to be flipped and dumped for unloading, the frame 1 is provided with a unloading control mechanism 3 connected with the transfer box 2 to push the transfer box 2 to flip and dump for unloading; the frame 1 is also provided with a grabbing unloading mechanism 4.

[0032] The transfer box 2 can adopt the flip structure design of the existing dump truck compartment. The flip structure in the present invention is specifically: the two ends of the transfer box 2 are respectively provided with support legs 21 supported on the frame 1, and the support leg 21 at one end is horizontally hingedly connected to the frame 1, so as to achieve flipping and dumping for unloading. In the present invention, the unloading control mechanism 3 is a hydraulic cylinder, specifically, one end of the hydraulic cylinder is hinged to the frame 1, and the other end is hinged to the transfer box 2.

[0033] In some embodiments, the unloading control mechanism 3 also uses a driving mechanism such as an electric push rod and a cylinder.

[0034] The transfer vehicle for construction materials of the present invention has a transfer box 2 that adopts a reversible structure, a discharging control mechanism 3 and a grabbing and unloading mechanism 4 on the frame 1. When the materials to be transported are sand, gravel and other materials that are not afraid of collision damage, the transfer box 2 can be pushed to flip by the discharging control mechanism 3 to dump the materials in the transfer box 2, thereby realizing dumping and unloading; and when the materials to be transported are bricks, steel bars and other materials that are difficult to unload by flipping or that will damage and deform the materials and cannot be unloaded by flipping, the materials in the transfer box 2 can be moved out of the transfer box 2 by grabbing and then transferring by the grabbing and unloading mechanism 4, thereby realizing grabbing and unloading, thereby reducing the cost of manual unloading and improving the unloading efficiency. The transfer vehicle of the present invention can realize both dumping and grabbing unloading, and can flexibly select the unloading method according to the characteristics of the transported materials. It has better adaptability and is conducive to improving the efficiency of construction. After the dumping and unloading of the transfer box 2 is completed, the unloading control mechanism 3 controls the transfer box 2 to flip in the opposite direction to return it to its original position, that is, reset.

[0035] The grabbing and unloading mechanism 4 can adopt the existing three-axis, four-axis, five-axis or other grabbing mechanical arm structures. Figure 2As shown, the grabbing and unloading mechanism 4 includes a linear screw slide 41, a first drive mechanism 42, a second drive mechanism 44, a third drive mechanism 48, a grab arm, and a grab mechanism 47 for grabbing the material in the transfer box 2. The linear screw slide 41 is an existing structure, including a linear guide rail, a slide 412 slidably matched with the linear guide rail, and a screw 411 matched with the slide 412, etc., and the specific structure is not described again. The linear screw slide 41 is horizontally installed on the frame 1 so that its slide 412 can slide horizontally, and the first driving mechanism 42 is connected to the screw 411 of the linear screw slide 41 in transmission; the grabbing arm includes a telescopic section 43 and a cantilever 45, the telescopic section 43 can be telescoped and lengthened or shortened as needed, the telescopic section 43 is vertically arranged, so that it can be vertically raised (lengthened) or lowered (shortened), and the lower end of the telescopic section 43 is installed on the slide 412 of the linear screw slide 41; the cantilever 45 is horizontally arranged above the transfer box 2, and the extension direction of the cantilever 45 is perpendicular to the extension direction of the linear screw slide 41, and the cantilever 45 is vertically arranged above the transfer box 2. One end of the arm 45 is rotatably connected to the upper end of the telescopic joint 43 through a vertical rotating shaft 46. The cantilever 45 is provided with a sliding block 451 for installing a gripping mechanism 47. The sliding block 451 is slidably connected to the cantilever 45 along the extension direction of the cantilever 45; the gripping mechanism 47 is installed on the sliding block 451; the third driving mechanism 48 is connected to the sliding block 451 to drive the sliding block 451 to slide relative to the cantilever 45 along the extension direction of the cantilever 45; the second driving mechanism 44 is installed at the upper end of the telescopic joint 43 and is transmission-connected to the cantilever 45 to drive the cantilever 45 to connect around the rotating shaft 46.

[0036] The arrangement direction (extension direction) of the linear screw slide 41 in the present invention can be horizontally arranged along the length direction or the width direction of the transfer box 2, and of course, it can also be arranged in other directions, such as: diagonally opposite and horizontally arranged. In the embodiment of the present invention, for the convenience of arrangement, the linear screw slide 41 is arranged on one side of the transfer box 2 and horizontally arranged along the length direction of the transfer box 2. The gripper mechanism 47 can adopt various existing gripper mechanisms, such as: hydraulic mechanical gripper, pneumatic mechanical gripper.

[0037] In the embodiment of the present invention, the first driving mechanism 42, the second driving mechanism 44, and the third driving mechanism 48 are all motors.

[0038] In the embodiment of the present invention, the second driving mechanism 44 is connected to the cantilever 45 by gear transmission. Of course, belt or chain transmission can also be used.

[0039] Assuming that the setting direction of the linear screw slide 41 is in the X-axis direction and the vertical direction is in the Z-axis direction, the setting direction of the cantilever 45 is in the Y-axis direction. The grabbing and unloading principle of the above grabbing and unloading mechanism 4 is as follows: when grabbing and unloading, the height of the gripping mechanism 47, that is, the position in the Z-axis direction, can be adjusted by the telescopic joint 43 according to the position of the material, and the screw 411 is driven by the first driving mechanism 42 to move the slide 412 to adjust the position of the gripping mechanism 47 in the X-axis direction, and the sliding block 451 is driven by the third driving mechanism 48 to move to adjust the position of the gripping mechanism 47 in the Y-axis direction. The various mechanisms cooperate with each other to move the gripping mechanism 47 to a suitable position for grabbing the material, and then control the gripping mechanism 47 to grab the material, and then drive the cantilever 45 to swing horizontally through the second driving mechanism 44, so that the gripping mechanism 47 moves the material out of the transfer box 2, and finally adjust the position in the X, Y, and Z axes through the first driving mechanism or / and the third driving mechanism or / and the telescopic joint 43 to unload the material to the specified position.

[0040] Furthermore, if Figure 2 As shown, a gripper lifting mechanism 49 is installed on the sliding block 451, and the gripper mechanism 47 is installed on the sliding block 451 through the gripper lifting mechanism 49, so that it can be lifted and lowered relative to the sliding block 451 through the gripper lifting mechanism 49. This structure can realize the coarse adjustment of the position of the gripper mechanism 47 in the Z-axis direction through the telescopic joint 43, that is, the gripper mechanism 47 is adjusted to an approximate gripping height, and the position of the gripper mechanism 47 in the Z-axis direction is fine-tuned through the gripper lifting mechanism 49, so as to more accurately control the height of the gripper mechanism 47. The gripper lifting mechanism 49 can adopt a hydraulic cylinder, an electric push rod, etc. It can be understood that a guide rail can be set between the gripper mechanism 47 and the sliding block 451 to guide the gripper mechanism 47 to move up and down as needed.

[0041] In the present invention, specifically, Figure 1 and Figure 2 As shown, the cantilever 45 is provided with a rack 452 arranged along its extension direction, the sliding block 451 is provided with a gear 453 meshing with the rack 452, and the third driving mechanism 48 is installed on the sliding block 451 and is transmission-connected with the gear 453 to drive the sliding block 451 to slide relative to the cantilever 45 along the extension direction of the cantilever 45.

[0042] In some real examples, the third driving mechanism 48 also drives the sliding block 451 to slide relative to the cantilever 45 along the extension direction of the cantilever 45 by means of a screw rod, a chain, etc.

[0043] In the present invention, the telescopic section 43 can directly adopt a hydraulic cylinder, and of course, an electric telescopic rod can also be adopted. Figure 3As shown, in the embodiment of the present invention, the telescopic joint 43 includes an upper segment 432, a lower segment 431 and a telescopic control hydraulic cylinder 433, the lower end of the upper segment 432 is inserted into the upper end of the lower segment 431 and slidably cooperates with the lower segment 431, the lower end of the lower segment 431 is mounted on the slide 412 of the linear screw slide 41, and the telescopic control hydraulic cylinder 433 is arranged in the lower segment 431 and connected to the upper segment 432 to drive the upper segment 432 to slide relative to the lower segment 431 to achieve telescopic. The above structure can better protect the telescopic control hydraulic cylinder 433 and ensure the service life of the telescopic control hydraulic cylinder.

[0044] In the present invention, the frame 1 is also provided with a locking mechanism for locking the transfer box 2 to prevent it from automatically turning over, so as to increase safety. Figure 4 As shown, specifically, the locking mechanism includes an electric push rod 51 and a lock hook 52 that is engaged with the transfer box 2 to lock the transfer box 2. One end of the lock hook 52 is hinged to the frame 1 so that the lock hook 52 can rotate around the hinge point. The electric push rod 51 is installed on the frame 1 and connected to the lock hook 52 to drive the lock hook 52 to rotate so as to engage with the transfer box 2 and then lock the transfer box 2 or disengage the lock hook 52 from the transfer box 2. When it is necessary to overturn and tip over the material, it is necessary to first push the lock hook 52 to rotate through the electric push rod 51 so that the lock hook 52 is disengaged from the transfer box 2, that is, unlocked, so that the transfer box 2 can be overturned and dumped through the unloading control mechanism 3. Figure 4 In the embodiment, the electric push rod 51 is hingedly mounted on the vehicle frame 1 and is hingedly connected to one end of the lock hook 52 so as to drive the lock hook 52 to rotate.

[0045] In some embodiments, the locking mechanism may also include a latch, an electronic lock, or the like.

[0046] In order to facilitate the control of the electric push rod 51 to lock the transfer box 2, Figure 4As shown, the frame 1 is provided with a reset detection switch 6 for detecting the position of the transfer box 2, and the reset detection switch 6 is electrically connected to the electric push rod 51; when the transfer box 2 is reset after unloading, the reset detection switch 6 is closed, thereby automatically energizing the electric push rod 51 and driving the lock hook 52 to rotate, thereby making the lock hook 52 hook and cooperate with the transfer box 2 to lock the transfer box 2. The reset detection switch 6 can be a limit switch or a position sensing switch. It is understandable that in order to facilitate the next control of the electric push rod 51 to unlock, a hook detection switch 7 connected in series with the reset detection switch 6 for detecting whether the lock hook 52 is in place can be set on the frame 1. When the lock hook 52 is locked in place, the hook detection switch is disconnected, so that the electric push rod 51 can be controlled to unlock in the reverse direction through the unlocking switch 8 connected in parallel with the reset detection switch 6. Figure 4 In the figure, the specific forward and reverse wiring circuit of the electric push rod is not drawn. For details, please refer to the existing motor forward and reverse control circuit diagram, which will not be elaborated here.

[0047] In order to make the transfer vehicle more stable when unloading, Figure 1 As shown, both sides of the frame 1 are provided with retractable hydraulic legs 9. When the trolley is unloading, the hydraulic legs 9 can be extended downward to assist in supporting the transfer vehicle, which can better ensure the stability of the transfer vehicle.

[0048] The transfer vehicle of the present invention can be equipped with a driving device to drive its movement as required. Figure 1 As shown, the transfer vehicle of the present invention is a non-powered vehicle without a driving device. In order to facilitate the movement of the vehicle, the frame 1 is provided with a traction rod 11 for connecting with a trailer. The traction rod 11 is connected to the frame 1 through a universal head structure, so that the traction rod 11 can rotate in all directions up, down, left, and right relative to the frame 1, thereby facilitating the movement and steering of the transfer vehicle. The universal head structure can specifically adopt a universal ball head structure or a cross-axis universal structure. Figure 1 In the universal head structure, a cross-axis universal structure is adopted.

Claims

1. A transport vehicle for construction materials, comprising a frame (1) provided with rollers and a transport box (2) arranged on the frame (1), characterized in that: The transfer box (2) is arranged on the frame (1) in a reversible structure so as to be able to be turned over and dumped for unloading; the frame (1) is provided with a discharge control mechanism (3) connected to the transfer box (2) to push the transfer box (2) to be turned over and dumped for unloading; The vehicle frame (1) is also provided with a grabbing and unloading mechanism (4).

2. A transport vehicle for construction materials as claimed in claim 1, characterized in that: The grabbing and unloading mechanism (4) comprises a linear screw slide (41), a first drive mechanism (42), a second drive mechanism (44), a third drive mechanism (48), a grabbing arm, and a grabbing mechanism (47) for grabbing materials in the transfer box (2); The linear screw slide (41) is horizontally mounted on the vehicle frame (1), and the first driving mechanism (42) is transmission-connected to the screw (411) of the linear screw slide (41); The grabbing arm comprises a telescopic section (43) and a cantilever (45); the telescopic section (43) is arranged vertically, and the lower end thereof is mounted on the slide (412) of the linear screw slide (41); The cantilever (45) is horizontally arranged above the transfer box (2), and the extension direction of the cantilever (45) is perpendicular to the extension direction of the linear screw slide (41). One end of the cantilever (45) is rotatably connected to the upper end of the telescopic joint (43) through a vertical rotating shaft (46). A sliding block (451) for installing a gripper mechanism (47) is provided on the cantilever (45), and the sliding block (451) is slidably connected to the cantilever (45) along the extension direction of the cantilever (45); The gripping mechanism (47) is mounted on the sliding block (451); The third driving mechanism (48) is connected to the sliding block (451) to drive the sliding block (451) to slide relative to the cantilever (45) along the extension direction of the cantilever (45); The second driving mechanism (44) is installed at the upper end of the telescopic joint (43) and is transmission-connected to the cantilever (45) to drive the cantilever (45) to connect around the rotating shaft (46).

3. A transport vehicle for construction materials as claimed in claim 2, characterized in that: A gripper lifting mechanism (49) is installed on the sliding block (451), and the gripper mechanism (47) is installed on the sliding block (451) through the gripper lifting mechanism (49) so as to be able to be lifted or lowered relative to the sliding block (451) through the gripper lifting mechanism (49).

4. A transport vehicle for construction materials as claimed in claim 2, characterized in that: The cantilever (45) is provided with a rack (452) arranged along its extension direction, the sliding block (451) is provided with a gear (453) meshing with the rack (452), and the third driving mechanism (48) is mounted on the sliding block (451) and is transmission-connected with the gear (453).

5. A transport vehicle for construction materials as claimed in claim 2, characterized in that: The telescopic joint (43) comprises an upper segment (432), a lower segment (431) and a telescopic control hydraulic cylinder (433); the lower end of the upper segment (432) is inserted into the upper end of the lower segment (431) and slidably cooperates with the lower segment (431); the lower end of the lower segment (431) is mounted on the slide (412) of the linear screw slide (41); the telescopic control hydraulic cylinder (433) is arranged in the lower segment (431) and connected to the upper segment (432) to drive the upper segment (432) to slide relative to the lower segment (431) to achieve telescopic movement.

6. A transport vehicle for construction materials as claimed in claim 1, characterized in that: The vehicle frame (1) is also provided with a locking mechanism for locking the transfer box (2) to prevent it from automatically turning over.

7. A transport vehicle for construction materials as claimed in claim 6, characterized in that: The locking mechanism comprises an electric push rod (51) and a lock hook (52) which is engaged with the transfer box (2) and is used to lock the transfer box (2). One end of the lock hook (52) is hinged to the frame (1). The electric push rod (51) is installed on the frame (1) and is connected to the lock hook (52) to drive the lock hook (52) to rotate so as to engage with the transfer box (2) and lock the transfer box (2) or to disengage the lock hook (52) from the transfer box (2).

8. A transport vehicle for construction materials as claimed in claim 7, characterized in that: The frame (1) is provided with a reset detection switch (6) for detecting the position of the transfer box (2), and the reset detection switch (6) is electrically connected to the electric push rod (51); when the transfer box (2) is reset after unloading, the reset detection switch (6) is closed, so that the electric push rod (51) is energized to drive the lock hook (52) to rotate, thereby causing the lock hook (52) to engage with the transfer box (2) to lock the transfer box (2).

9. A transport vehicle for construction materials as claimed in claim 1, characterized in that: Both sides of the vehicle frame (1) are provided with retractable hydraulic legs (9).

10. A transport vehicle for construction materials as claimed in claim 1, characterized in that: The vehicle frame (1) is provided with a traction rod (11), and the traction rod (11) is connected to the vehicle frame (1) via a universal head structure.

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