Tool transferring device for construction site

Abstract

The invention discloses a tool transferring device for a construction site, which comprises a self-balancing frame, a traction mechanism, a locking mechanism and a flat car body, the self-balancing frame is arranged at the bottom of the flat car body, the traction mechanism is arranged on the self-balancing frame, the locking mechanism is arranged on the flat car body, the self-balancing frame comprises a frame unit, and the frame unit is arranged on the frame unit. The frame units are arranged at the bottom of the flat car body, the two sets of frame units are symmetrically arranged, longitudinal beams are connected between the two sets of frame units, each frame unit comprises a cross beam, a self-adaptive adjusting mechanism, sliding blocks and adjusting supporting rods, the longitudinal beams are arranged on the cross beams, the sliding blocks are suitable for being clamped on the cross beams in a sliding mode, the two sets of sliding blocks are symmetrically arranged, and the adjusting supporting rods are arranged on the cross beams. The number of the adjusting supporting rods is two. The invention relates to the technical field of transfer devices, in particular to a tool transfer device for a construction site, which can be automatically adjusted according to road conditions, can reduce the inclination amplitude of a flat car body and is beneficial to solving the problem of tool falling.

Description

Technical Field

[0001] The invention relates to the technical field of transfer devices, and in particular to a tool transfer device at a construction site. Background Art

[0002] During the construction process, it is usually necessary to use a transfer device to transport the construction tools. Commonly used transfer devices include a towing flatbed trailer. The construction tools are placed on the flatbed body, and then the towing flatbed trailer is towed to the designated location by an external towing device, thereby realizing the transportation of the construction tools.

[0003] However, the above-mentioned towed flatbed trailer still has some shortcomings during use: since the environment at the construction site is usually poor and the ground is often bumpy, when using a conventional towed flatbed trailer to transport tools, the flatbed body is prone to tilting when encountering the bumpy ground, which can easily cause the tools to fall off the flatbed body, which not only easily causes damage to the tools, but also wastes a lot of time and manpower in reloading the tools. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a tool transfer device at the construction site which can adjust autonomously according to road conditions, can reduce the tilt amplitude of the flatbed vehicle body, and is conducive to solving the problem of tool falling.

[0005] The technical solution adopted by the present invention is as follows: the present invention is a tool transfer device for a construction site, comprising a self-balancing frame, a traction mechanism, a locking mechanism and a flat body, wherein the self-balancing frame is arranged at the bottom of the flat body, the traction mechanism is arranged on the self-balancing frame, the locking mechanism is arranged on the flat body, the self-balancing frame comprises a frame unit, the frame unit is arranged at the bottom of the flat body, the frame unit is symmetrically provided with two groups, a longitudinal beam is connected between the two groups of the frame units, the frame unit comprises a cross beam, an adaptive adjustment mechanism, a slider and an adjustment The support rod is provided on the cross beam, the slider is snap-fitted and slidably adapted to be on the cross beam, the slider is symmetrically provided with two groups, the adjustment support rod is provided with two groups, one end of the two groups of adjustment support rods is respectively hinged on the two groups of sliders, and the other end is hinged on the bottom of the flatbed vehicle body, the two groups of adjustment support rods are cross-arranged, a fixed block is provided in the middle of the cross beam, a first spring is fixedly connected between the fixed block and the slider, the adaptive adjustment mechanism is provided on the cross beam, the adaptive adjustment mechanism is symmetrically provided with two groups, and a wheel is provided on the adaptive adjustment mechanism.

[0006] Furthermore, the adaptive adjustment mechanism includes a first mounting plate, a second mounting plate, a first connecting plate and a second connecting plate, the first mounting plate is fixed to the crossbeam, two groups of first connecting shafts are arranged on the first mounting plate, the first connecting plate and the second connecting plate are rotatably arranged on the two groups of first connecting shafts respectively, the second mounting plate is provided with two groups of second connecting shafts, the second mounting plate is rotatably arranged on the first connecting plate and the second connecting plate through the second connecting shaft, the first mounting plate, the second mounting plate, the first connecting plate and the second connecting plate form a parallelogram, the first connecting plate and the second connecting plate are parallel to each other, the first mounting plate and the second mounting plate are parallel to each other, the second mounting plate is provided with a wheel axle, The wheel is rotatably arranged on the wheel axle, and a first hydraulic cylinder is arranged between a group of diagonally arranged first connecting shafts and a second connecting shaft, the cylinder body end of the first hydraulic cylinder is rotatably arranged on the first connecting shaft, and the piston rod end of the first hydraulic cylinder is rotatably arranged on the second connecting shaft. A second spring is sleeved on the first hydraulic cylinder, and the two ends of the second spring are respectively fixed on the cylinder body of the first hydraulic cylinder and the piston rod of the first hydraulic cylinder. A second hydraulic cylinder is arranged between the first mounting plate and the adjusting support rod, the cylinder body end of the second hydraulic cylinder is hinged on the first mounting plate, and the piston rod end of the second hydraulic cylinder is hinged on the adjusting support rod, and an oil pipeline is connected between the cylinder body of the first hydraulic cylinder and the cylinder body of the second hydraulic cylinder.

[0007] Furthermore, the traction mechanism comprises a fixing plate and a traction frame, the fixing plate is fixed on the crossbeam, the traction frame is hinged on the fixing plate, and the traction frame is provided with a traction ring.

[0008] Furthermore, a sliding rod is slidably provided on the traction frame, a traction ring is provided on the sliding rod, a third spring is sleeved on the sliding rod, and two ends of the third spring are respectively provided on the traction frame and the sliding rod.

[0009] Furthermore, the locking mechanism includes a nut sleeve, a threaded support and a support foot, the nut sleeve is arranged on the flatbed vehicle body, the threaded support is connected to the nut sleeve through threads, and the support foot is rotatably arranged at the bottom of the threaded support.

[0010] Furthermore, a through hole is provided on the threaded pillar, a rotating rod is slidably provided in the through hole, and anti-dropping balls are provided at both ends of the rotating rod.

[0011] Furthermore, a mounting plate is fixed on the piston rod of the first hydraulic cylinder, an expansion ring is fixed on the cylinder body of the first hydraulic cylinder, and two ends of the second spring are respectively arranged on the mounting plate and the expansion ring.

[0012] Furthermore, a mounting seat is provided at the bottom of the flatbed vehicle body, and the adjustment support rod is hingedly provided on the mounting seat.

[0013] Furthermore, an anti-slip pad is provided at the bottom of the support foot.

[0014] Furthermore, the locking mechanisms are provided in four groups, and the four groups of locking mechanisms are respectively arranged at the four corners of the flatbed vehicle body.

[0015] The beneficial effects achieved by the present invention by adopting the above structure are as follows: the present solution is provided with a self-balancing frame. When the transfer device is used to transfer tools at the construction site, the self-balancing frame can better adapt to the bumpy ground and can be adjusted autonomously according to the ground conditions, thereby reducing the tilt amplitude of the flatbed body, which is helpful to solve the problem of tool falling caused by the tilt of the flatbed body; the present solution is provided with a traction mechanism, which is convenient for traction of the transfer device, and the third spring is provided to have a good buffering effect during the traction process; the present solution is provided with a locking mechanism. When the transfer device is moved to the specified position, the locking mechanism is convenient for locking and fixing the transfer device, thereby better ensuring the stability of the transfer device when loading and unloading tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 The three-dimensional embodiment of the present invention Figure 1 ;

[0018] Figure 2 The three-dimensional embodiment of the present invention Figure 2 ;

[0019] Figure 3 It is a front view of an embodiment of the present invention;

[0020] Figure 4 A rear view of an embodiment of the present invention;

[0021] Figure 5 It is a left side view of an embodiment of the present invention;

[0022] Figure 6 A top view of an embodiment of the present invention;

[0023] Figure 7 A bottom view of an embodiment of the present invention;

[0024] Figure 8 for Figure 3 Sectional view along section AA;

[0025] Fig. 9 for Figure 2 A magnified view of part A;

[0026] Fig.10 It is a structural schematic diagram of a frame unit in an embodiment of the present invention;

[0027] Fig.11 Schematic diagram of the structure of the traction mechanism in the embodiment of the present invention.

[0028] Among them, 1. self-balancing frame, 2. traction mechanism, 3. locking mechanism, 4. flat body, 5. longitudinal beam, 6. frame unit, 7. cross beam, 8. adaptive adjustment mechanism, 9. slider, 10. adjustment support rod, 11. first spring, 12. wheel, 13. fixing block, 14. first mounting plate, 15. second mounting plate, 16. first connecting plate, 17. second connecting plate, 18. first hydraulic cylinder, 19. second hydraulic cylinder, 20. second spring, 21. oil pipeline, 22. axle, 23. first connecting shaft, 24. second connecting shaft, 25. fixing plate, 26. traction frame, 27. sliding rod, 28. third spring, 29. traction ring, 30. nut sleeve, 31. threaded support, 32. support foot, 33. rotating rod, 34. anti-slip ball, 35. mounting plate, 36. expansion ring, 37. mounting seat, 38. anti-slip pad. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] like Figure 1-Figure 11 As shown, a tool transfer device for a construction site of the present invention comprises a self-balancing frame 1, a traction mechanism 2, a locking mechanism 3 and a flatbed body 4, wherein the self-balancing frame 1 is arranged at the bottom of the flatbed body 4, the traction mechanism 2 is arranged on the self-balancing frame 1, the locking mechanism 3 is arranged on the flatbed body 4, the self-balancing frame 1 comprises a frame unit 6, the frame unit 6 is arranged at the bottom of the flatbed body 4, the frame unit 6 is symmetrically provided with two groups, and a longitudinal beam 5 is connected between the two groups of frame units 6; the locking mechanism 3 is provided with four groups, and the four groups of locking mechanisms 3 are respectively arranged at the four corners of the flatbed body 4.

[0032] The frame unit 6 includes a crossbeam 7, an adaptive adjustment mechanism 8, a slider 9 and an adjustment support rod 10. The longitudinal beam 5 is arranged on the crossbeam 7. The slider 9 is snap-fitted and slidably adapted on the crossbeam 7. Two groups of sliders 9 are symmetrically provided. Two groups of adjustment support rods 10 are provided. One end of the two groups of adjustment support rods 10 are respectively hinged on the two groups of sliders 9, and the other end is hinged on the bottom of the flatbed body 4. A mounting seat 37 is provided at the bottom of the flatbed body 4. The adjustment support rod 10 is hinged on the mounting seat 37. The two groups of adjustment support rods 10 are cross-arranged. A fixed block 13 is provided in the middle of the crossbeam 7. A first spring 11 is fixedly connected between the fixed block 13 and the slider 9. The adaptive adjustment mechanism 8 is provided on the crossbeam 7. Two groups of the adaptive adjustment mechanism 8 are symmetrically provided. A wheel 12 is provided on the adaptive adjustment mechanism 8.

[0033] The adaptive adjustment mechanism 8 includes a first mounting plate 14, a second mounting plate 15, a first connecting plate 16 and a second connecting plate 17. The first mounting plate 14 is fixed on the crossbeam 7. Two groups of first connecting shafts 23 are provided on the first mounting plate 14. The first connecting plate 16 and the second connecting plate 17 are respectively rotatably arranged on the two groups of first connecting shafts 23. The second mounting plate 15 is provided with two groups of second connecting shafts 24. The second mounting plate 15 is rotatably arranged on the first connecting plate 16 and the second connecting plate 17 through the second connecting shaft 24. The first mounting plate 14, the second mounting plate 15, the first connecting plate 16 and the second connecting plate 17 form a parallelogram. The first connecting plate 16 and the second connecting plate 17 are parallel to each other. The first mounting plate 14 and the second mounting plate 15 are parallel to each other. A wheel axle 22 is provided on the second mounting plate 15. The wheel 12 is rotatably arranged on the wheel axle 22. A group of first connecting shafts 23 and a second connecting shaft 23 are diagonally arranged. 24, a first hydraulic cylinder 18 is provided between the cylinder body end of the first hydraulic cylinder 18 is rotatably provided on the first connecting shaft 23, and the piston rod end of the first hydraulic cylinder 18 is rotatably provided on the second connecting shaft 24. A second spring 20 is sleeved on the first hydraulic cylinder 18, and the two ends of the second spring 20 are respectively fixed on the cylinder body of the first hydraulic cylinder 18 and the piston rod of the first hydraulic cylinder 18. A second hydraulic cylinder 19 is provided between the first mounting plate 14 and the adjusting support rod 10, and the cylinder body end of the second hydraulic cylinder 19 is hingedly provided on the first mounting plate 14, and the piston rod end of the second hydraulic cylinder 19 is hingedly provided on the adjusting support rod 10. An oil delivery pipe 21 is connected between the cylinder body of the first hydraulic cylinder 18 and the cylinder body of the second hydraulic cylinder 19; a mounting plate 35 is fixed on the piston rod of the first hydraulic cylinder 18, an expansion ring 36 is fixed on the cylinder body of the first hydraulic cylinder 18, and the two ends of the second spring 20 are respectively provided on the mounting plate 35 and the expansion ring 36.

[0034] The traction mechanism 2 includes a fixed plate 25 and a traction frame 26. The fixed plate 25 is fixed on the cross beam 7. The traction frame 26 is hinged on the fixed plate 25. The traction frame 26 is provided with a traction ring 29. A sliding rod 27 is slidably provided on the traction frame 26. The sliding rod 27 is provided with a traction ring 29. A third spring 28 is sleeved on the sliding rod 27. The two ends of the third spring 28 are respectively provided on the traction frame 26 and the sliding rod 27.

[0035] The locking mechanism 3 includes a nut sleeve 30, a threaded pillar 31 and a support foot 32. The nut sleeve 30 is arranged on the flatbed body 4, the threaded pillar 31 is connected to the nut sleeve 30 by threads, and the support foot 32 is rotatably arranged at the bottom of the threaded pillar 31; a through hole is provided on the threaded pillar 31, and a rotating rod 33 is slidably provided in the through hole, and anti-slip balls 34 are provided at both ends of the rotating rod 33; an anti-slip pad 38 is provided at the bottom of the support foot 32.

[0036] During specific use, the staff places the tool to be transported on the flatbed vehicle body 4. According to actual needs, the tool can also be fixed by bundling or other means, and then the external traction device is connected to the traction ring 29. At this time, the external traction device can drive the transfer device to move and transport the tool. In the process of moving the transfer device by towing the external traction device, the third spring 28 can play a good buffering function.

[0037] Since the environment of the construction site is usually poor and the ground is often bumpy, when using a conventional tractor-type flatbed trailer to transport tools, the flatbed body 4 is prone to tilt when encountering bumpy ground, which can easily cause the tools to fall from the flatbed body 4. This not only easily causes damage to the tools, but also wastes a lot of time and manpower to reload the tools. The use of this transport device can effectively solve the above problems. When using the transport device to transport tools, if the ground is bumpy, the self-balancing frame 1 can autonomously adjust the balance, thereby reducing the tilt of the flatbed body 4, thereby avoiding the problem of tools falling due to the tilt of the flatbed body 4. The process of autonomous balance adjustment of the transport device is as follows:

[0038] When one of the wheels 12 passes over a pothole, the crossbeam 7 connected thereto will have a certain tilting tendency, thereby driving the wheel 12 passing through the pothole to move down a certain distance. However, since the longitudinal beam 5 is connected between the front and rear sets of crossbeams 7 and has a certain rigidity, the degree of tilt (or the degree of bending at one end) that the crossbeam 7 can produce is relatively small, resulting in the wheel 12 passing through the pothole following the crossbeam 7 to move down a small distance, which is not enough to compensate for the depth of the pothole. At this time, it is necessary to fill the distance difference by deforming the parallelogram composed of the first mounting plate 14, the second mounting plate 15, the first connecting plate 16 and the second connecting plate 17 (that is, the wheel 12 will definitely touch the bottom of the pothole when slowly passing through the pothole and will not be suspended in the air). That is, when the wheel 12 passes through the pothole When the first connecting plate 16 and the second connecting plate 17 are tilted, the first connecting plate 16 and the second connecting plate 17 will tilt, and the second mounting plate 15 will be driven downward by the tilting of the first connecting plate 16 and the second connecting plate 17, thereby driving the wheel 12 to move downward and contact the ground at the pothole. During the tilting of the first connecting plate 16 and the second connecting plate 17, the first hydraulic cylinder 18 will be pressurized, so that the hydraulic oil in the first hydraulic cylinder 18 will enter the second hydraulic cylinder 19 through the oil pipe 21, and push the piston rod of the second hydraulic cylinder 19 out a distance, and the piston rod of the second hydraulic cylinder 19 pushes the adjusting support rod 10 connected thereto to rotate, and pushes up the tilted side of the flatbed body 4, thereby reducing the tilting amplitude of the flatbed body 4, which is conducive to solving the problem of tool falling caused by the tilting of the flatbed body 4.

[0039] When the transfer device is moved to the specified position, the rotating rod 33 is rotated, and the threaded support 31 is driven downward by the rotating rod 33. The threaded support 31 drives the support foot 32 to move downward and contact the ground. In this way, the transfer device can be locked and positioned to prevent the transfer device from moving during the loading and unloading process.

[0040] In summary, the present invention is provided with a self-balancing frame 1. When the transfer device is used to transfer tools at the construction site, the self-balancing frame 1 can better adapt to the bumpy ground and can be adjusted autonomously according to the ground conditions, thereby reducing the tilting amplitude of the flatbed body 4, which is helpful to solve the problem of tool falling caused by the tilting of the flatbed body 4; the present invention is provided with a traction mechanism 2, which facilitates the traction of the transfer device, and the third spring 28 is provided to have a good buffering effect during the traction process; the present invention is provided with a locking mechanism 3. When the transfer device is moved to the specified position, the locking mechanism 3 is used to lock and fix the transfer device, thereby better ensuring the stability of the transfer device when loading and unloading tools.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tool transfer device for a construction site, comprising a self-balancing frame (1), a traction mechanism (2), a locking mechanism (3) and a flatbed body (4), wherein the self-balancing frame (1) is arranged at the bottom of the flatbed body (4), the traction mechanism (2) is arranged on the self-balancing frame (1), and the locking mechanism (3) is arranged on the flatbed body (4), characterized in that: The self-balancing frame (1) comprises a frame unit (6), the frame unit (6) being arranged at the bottom of a flatbed vehicle body (4), the frame unit (6) being symmetrically provided with two groups, a longitudinal beam (5) being connected between the two groups of the frame units (6), the frame unit (6) comprising a cross beam (7), an adaptive adjustment mechanism (8), a slider (9) and an adjustment support rod (10), the longitudinal beam (5) being arranged on the cross beam (7), the slider (9) being snap-fitted and slidably adapted to be on the cross beam (7), the slider (9) being symmetrically provided with two groups, the adjustment support rod (10) ) are provided with two groups, one end of the two groups of adjustment support rods (10) are respectively hinged on the two groups of sliders (9), and the other end is hinged on the bottom of the flatbed vehicle body (4), the two groups of adjustment support rods (10) are cross-arranged, a fixed block (13) is provided in the middle of the cross beam (7), a first spring (11) is fixedly connected between the fixed block (13) and the slider (9), the adaptive adjustment mechanism (8) is provided on the cross beam (7), the adaptive adjustment mechanism (8) is symmetrically provided with two groups, and a wheel (12) is provided on the adaptive adjustment mechanism (8).

2. The tool transfer device for a construction site according to claim 1, characterized in that: The adaptive adjustment mechanism (8) comprises a first mounting plate (14), a second mounting plate (15), a first connecting plate (16) and a second connecting plate (17); the first mounting plate (14) is fixed on the crossbeam (7); two groups of first connecting shafts (23) are provided on the first mounting plate (14); the first connecting plate (16) and the second connecting plate (17) are rotatably arranged on the two groups of first connecting shafts (23); the second mounting plate (15) is provided with two groups of second connecting shafts (24); the second mounting plate (15) is rotatably arranged on the first connecting plate (16) and the second connecting plate (17) through the second connecting shafts (24); the first mounting plate (14), the second mounting plate (15), the first connecting plate (16) and the second connecting plate (17) form a parallelogram; the first connecting plate (16) and the second connecting plate (17) are parallel to each other; the first mounting plate (14) and the second mounting plate (15) are parallel to each other; the second mounting plate (15) is provided with a wheel axle ( 22), the wheel (12) is rotatably mounted on the wheel axle (22), a first hydraulic cylinder (18) is arranged between a first connecting shaft (23) and a second connecting shaft (24) which are arranged diagonally, a cylinder end of the first hydraulic cylinder (18) is rotatably mounted on the first connecting shaft (23), a piston rod end of the first hydraulic cylinder (18) is rotatably mounted on the second connecting shaft (24), a second spring (20) is sleeved on the first hydraulic cylinder (18), and two ends of the second spring (20) are respectively The second hydraulic cylinder (19) is fixed on the cylinder body of the first hydraulic cylinder (18) and the piston rod of the first hydraulic cylinder (18), and is provided between the first mounting plate (14) and the adjusting support rod (10). The cylinder body end of the second hydraulic cylinder (19) is hingedly provided on the first mounting plate (14), and the piston rod end of the second hydraulic cylinder (19) is hingedly provided on the adjusting support rod (10). An oil delivery pipe (21) is connected between the cylinder body of the first hydraulic cylinder (18) and the cylinder body of the second hydraulic cylinder (19).

3. The tool transfer device for a construction site according to claim 1, characterized in that: The traction mechanism (2) comprises a fixing plate (25) and a traction frame (26), wherein the fixing plate (25) is fixed on the crossbeam (7), the traction frame (26) is hingedly arranged on the fixing plate (25), and a traction ring (29) is arranged on the traction frame (26).

4. The tool transfer device for a construction site according to claim 3, characterized in that: A sliding rod (27) is slidably arranged on the traction frame (26), a traction ring (29) is arranged on the sliding rod (27), a third spring (28) is sleeved on the sliding rod (27), and two ends of the third spring (28) are respectively arranged on the traction frame (26) and the sliding rod (27).

5. The tool transfer device for a construction site according to claim 1, characterized in that: The locking mechanism (3) comprises a nut sleeve (30), a threaded support (31) and a support foot (32); the nut sleeve (30) is arranged on a flatbed vehicle body (4); the threaded support (31) is connected to the nut sleeve (30) through threads; and the support foot (32) is rotatably arranged at the bottom of the threaded support (31).

6. The tool transfer device for a construction site according to claim 5, characterized in that: The threaded pillar (31) is provided with a through hole, a rotating rod (33) is slidably arranged in the through hole, and anti-dropping balls (34) are arranged at both ends of the rotating rod (33).

7. The tool transfer device for a construction site according to claim 2, characterized in that: A mounting plate (35) is fixed on the piston rod of the first hydraulic cylinder (18), an expansion ring (36) is fixed on the cylinder body of the first hydraulic cylinder (18), and two ends of the second spring (20) are respectively arranged on the mounting plate (35) and the expansion ring (36).

8. The tool transfer device for a construction site according to claim 1, characterized in that: A mounting seat (37) is provided at the bottom of the flatbed vehicle body (4), and the adjustment support rod (10) is hingedly arranged on the mounting seat (37).

9. The tool transfer device for a construction site according to claim 5, characterized in that: An anti-skid pad (38) is provided at the bottom of the support foot (32).

10. The tool transfer device for a construction site according to claim 1, characterized in that: The locking mechanisms (3) are provided in four groups, and the four groups of locking mechanisms (3) are respectively arranged at the four corners of the flatbed vehicle body (4).

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