Material carrying device for building construction site

Abstract

The invention relates to a material carrying device for a building construction site, and belongs to the technical field of construction appliances, the material carrying device comprises a base provided with rollers, and a bearing platform is arranged on the base; the stand column is arranged on the bearing platform, a first fixed pulley is arranged at the top end of the stand column, the bearing platform is provided with an overhanging rod located at the bottom of the stand column, and the overhanging rod extends out of the outer side wall of the stand column; the lifting rope is wound around the first fixed pulley, a winding and unwinding assembly is arranged on the bearing platform, one end of the lifting rope is connected with the winding and unwinding assembly, and the lifting rope is wound and unwound through the winding and unwinding assembly; the lifting hook is provided with a hook opening, the lifting hook is connected to the other end of the lifting rope, the lifting hook is located over the overhanging rod, and the lifting hook is further provided with a sealing assembly used for opening and closing the hook opening; the supporting legs are connected to the base through a lifting mechanism, the lifting mechanism is used for driving the supporting legs to ascend and descend, when the supporting legs move, the supporting legs are driven by the lifting mechanism to be lifted away from the ground, and when the supporting legs do not move, the supporting legs are driven by the lifting mechanism to fall on the ground. The carrying device is higher in use safety.

Description

Technical Field

[0001] The invention belongs to the technical field of construction tools, and in particular relates to a material handling device used at a construction site. Background Art

[0002] At construction sites, materials (such as building materials, tools, etc.) often need to be moved from one location to another. For large-tonnage materials, large equipment such as tower cranes and gantry cranes are usually used for transportation, while for some small-weight materials, carts are usually used for transportation. In order to facilitate the transportation of some medium-weight materials, many handling devices that can travel on the ground and are dedicated to transporting materials at construction sites have appeared in the prior art. Most of these devices are equipped with hooks, which are used to lift the materials, and then use the rollers configured on the device to achieve the function of moving the materials.

[0003] Although the handling device used to carry medium-quality materials in the prior art can realize the function of moving materials, it has great safety hazards, as follows:

[0004] 1. The handling device only relies on rollers to contact the ground, and the rollers are easy to rotate. Therefore, when taking and placing materials on the device, the handling device often moves for no reason, and it is difficult to place it stably on the ground when taking and placing materials;

[0005] 2. The material lifted by the hook is in a suspended state. If the lifting rope or wire rope connected to the hook breaks, the material will fall directly to the ground and be damaged;

[0006] 3. The hook is not equipped with a structure to seal its opening, resulting in the risk of materials falling off when hung on the hook. Summary of the invention

[0007] The present invention provides a material handling device for use at a construction site, which is used to solve some of the potential safety hazards existing in the handling devices for handling medium-quality materials in the prior art.

[0008] The present invention is implemented by the following technical solution: A material handling device for a construction site, comprising:

[0009] A base is provided with rollers, and a support platform is provided on the base;

[0010] A column is arranged on the support platform, a first fixed pulley is arranged on the top of the column, and the support platform is provided with an outrigger located at the bottom of the column, and the outrigger extends out of the outer side wall of the column;

[0011] A suspension rope is wound around the first fixed pulley, a retractable assembly is provided on the support platform, one end of the suspension rope is connected to the retractable assembly, so that the suspension rope can be retracted and released by using the retractable assembly;

[0012] A hook with a hook opening, the hook is connected to the other end of the suspension rope, and the hook is located directly above the outrigger, and a sealing component for opening and closing the hook opening is also installed on the hook.

[0013] Support legs, which are connected to the base through a lifting mechanism, the lifting mechanism is used to drive the support legs to lift and lower, and when moving, the support legs are lifted off the ground by the driving of the lifting mechanism, and when not moving, the support legs are landed on the ground by the driving of the lifting mechanism.

[0014] Further, in order to better implement the present invention, the lifting mechanism includes:

[0015] Two outrigger plates, which are respectively fixedly connected to two opposite outer side walls of the base, and the outrigger plates extend out of the outer side wall of the base;

[0016] Two first electric push rods, which are respectively installed on the two outrigger plates, and the telescopic rods of the first electric push rods face upward;

[0017] A frame, which is connected to the tops of the telescopic rods of the two first electric push rods, and the base is located inside the frame;

[0018] The number of the support legs is four, and the four support legs are all located below the frame, and the four support legs are located at the four vertices of the same rectangle.

[0019] Further, in order to better implement the present invention, the support leg includes:

[0020] A screw rod, an outwardly convex plate is fixedly connected to the outer side wall of the frame, the outwardly convex plate extends out of the outer side wall of the frame, and the top end of the screw rod is fixedly connected to the bottom wall of the outwardly convex plate;

[0021] A threaded pipe, which is screwed onto the screw rod.

[0022] Further, in order to better implement the present invention, the sealing component includes:

[0023] A convex block, which is fixedly arranged on the outer side wall of the hook, the convex block is located below the hook opening of the hook, the convex block is provided with a through round hole, the through round hole penetrates the upper surface and the lower surface of the convex block, the hook is provided with an outward extension part above its hook opening, and the outward extension part is provided with a round through hole facing the through round hole, and a notch is provided on the hole wall of the round through hole;

[0024] A round rod is slidably inserted into the through-round hole and the round through-hole. The bottom end of the round rod is located below the bump, and a handle with an outer diameter larger than that of the through-round hole is fixedly connected to the bottom end of the round rod. A clamping block corresponding to the notch is arranged at the top end of the round rod;

[0025] When the clamping block rotates to be directly opposite to the notch, the notch forms a clearance for the clamping block;

[0026] When the clamping block rotates to be misaligned with the notch, the extending part forms a resistance against the clamping block.

[0027] Furthermore, to better implement the present invention, the sealing component further includes:

[0028] A spring is sleeved outside the round rod, and two ends of the spring are respectively abutted against the bump and the handle;

[0029] The clamping block and the top end of the round rod form a clamping portion, and the outer diameter of the clamping portion is larger than the aperture of the through-round hole.

[0030] Furthermore, to better implement the present invention, the suspension rope includes a first steel wire rope and a second steel wire rope bundled together by a binding band. One ends of the first steel wire rope and the second steel wire rope are both connected to the winding and unwinding component, and the other ends of the first steel wire rope and the second steel wire rope are both connected to the hook. Among them, the first steel wire rope is in a straightened state, and the second steel wire rope is in a slack state.

[0031] Furthermore, to better implement the present invention, the winding and unwinding component includes:

[0032] A first motor, a bracket is arranged on the base platform, and the first motor is installed on the bracket;

[0033] A worm is rotatably installed on the bracket, and the worm is connected to the output shaft of the first motor to drive the worm to rotate by using the first motor;

[0034] A winding shaft, two supporting plates are further arranged on the base platform, the winding shaft is rotatably installed between the two supporting plates, and one end of the suspension rope is connected to the winding shaft;

[0035] A turbine is arranged on the winding shaft, and the turbine meshes with the worm.

[0036] Further, in order to better realize the present invention, a mounting cavity is opened in the middle of the top surface of the base, a second motor is installed in the mounting cavity, the support platform is overlapped on the top surface of the base and covers the mounting cavity, and the support platform is connected to the output shaft of the second motor so that the second motor is used to drive the support platform to rotate on the top surface of the base;

[0037] A ball bearing is also installed between the top surface of the base and the support platform.

[0038] Furthermore, in order to better realize the present invention, a vertical guide rail is connected to one side of the column, and a vertical slide groove is provided on the vertical guide rail. A slider is provided on the outer wall of the hook, and the slider is located on the side away from the hook mouth of the hook, and the slider is installed in the vertical slide groove for sliding up and down.

[0039] Further, in order to better realize the present invention, a transverse slide groove is provided on the top surface of the extension rod, the bottom end of the vertical guide rail is slidably mounted on the transverse slide groove, a second electric push rod is installed inside the column, and a telescopic rod of the second electric push rod faces the vertical guide rail and is connected to the vertical guide rail, so that the second electric push rod is used to drive the vertical guide rail to translate on the extension rod;

[0040] A second fixed pulley is rotatably mounted on the top of the vertical guide rail, and the suspension rope is wound around the second fixed pulley.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The material handling device for construction sites provided by the present invention comprises a sealing assembly for opening and closing the hook opening installed on the hook, a support leg installed on a base equipped with rollers through a lifting mechanism, and an extension rod arranged under the hook. In this way, when it is not necessary to move, the lifting mechanism is used to drive the support leg to land on the ground, and the support leg is used to support the base in cooperation with the roller. The friction between the support leg and the ground prevents the handling device from being displaced unnecessarily when taking and placing materials. When it is necessary to move, the lifting device is used to lift the support leg And it is lifted off the ground, at this time only the roller is in contact with the ground, so it is convenient to move, and when the hook is hung with materials, the hook mouth of the hook is closed by using the sealing assembly to prevent the materials from falling off the hook. When the materials need to be taken or placed, the sealing assembly is opened from the hook mouth of the hook. In addition, the materials hoisted on the hook can be overlapped on the above-mentioned outriggers, so that the materials are not only hooked on the hook, but also overlapped on the outriggers. In this way, even if the materials fall off the hook, the outriggers can also play a certain supporting role for the fallen materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 It is a schematic structural diagram of a material handling device used at a construction site provided by an embodiment of the present invention;

[0045] Figure 2 is Figure 1 a partial enlarged view of area A in

[0046] Figure 3 is Figure 1 a partial enlarged view of area B in

[0047] Figure 4 is Figure 3 a partial enlarged view of area C in

[0048] Figure 5 It is a schematic structural diagram of a circular through-hole and a notch provided on the outer extension of a lifting hook in an embodiment of the present invention;

[0049] Figure 6 is Figure 1 another perspective view of the material handling device used at a construction site shown in

[0050] Figure 7 is Figure 1 a sectional view of the material handling device used at a construction site shown in

[0051] Figure 8 is Figure 7 a partial enlarged view of area D in

[0052] In the figure:

[0053] 100 - Base, 110 - Roller, 200 - Bearing platform, 210 - Outrigger, 211 - Transverse chute, 220 - Bracket, 230 - Support plate, 240 - Second motor, 250 - Ball, 300 - Column, 310 - First fixed pulley, 320 - Second electric push rod, 330 - Vertical guide rail, 331 - Vertical chute, 332 - Second fixed pulley, 400 - Suspension rope, 410 - Strapping, 420 - First steel wire rope, 430 - Second steel wire rope, 500 - Reel assembly, 510 - First motor, 520 - Worm, 530 - Reel shaft, 540 - Turbine, 600 - Hook, 610 - Outrigger part, 611 - Circular through hole, 612 - Notch, 620 - Slide block, 700 - Sealing component, 710 - Protrusion, 720 - Round rod, 721 - Locking block, 730 - Handle, 740 - Spring, 800 - Support leg, 810 - Screw, 820 - Threaded pipe, 900 - Lifting mechanism, 910 - Outrigger plate, 920 - First electric push rod, 930 - Frame, 940 - Outward convex plate. Detailed implementation mode

[0054] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0055] Embodiment:

[0056] As Figures 1-8 shown, this embodiment provides a material handling device for construction sites, including a base 100, a column 300, a suspension rope 400, a hook 600 and a support leg 800, wherein:

[0057] The base 100 is configured with rollers 110 for easy movement, and the rollers 110 can be conventional wheels or universal wheels with brakes. A bearing platform 200 is provided on the base 100, and the bearing platform 200 is used to bear the weight. Specifically, the bearing platform 200 is installed on the base 100 in a detachable manner, and its specific installation method will be specifically introduced below, so it will not be elaborated in detail here.

[0058] The column 300 is arranged on the bearing platform 200, and the column 300 extends vertically. A first fixed pulley 310 is arranged at the top end of the column 300. It is easy to understand that the first fixed pulley 310 can rotate at the top end of the column 300. An outrigger 210 is arranged on the bearing platform 200 at the bottom of the column 300. The outrigger 210 extends out of the outer side wall of the column 300. Optionally, the outrigger 210 can be a steel square bar welded to the bearing platform 200. One end of the outrigger 210 is butted against the bottom of the column 300, and the outrigger 210 extends horizontally.

[0059] The lifting rope 400 is wound around the first fixed pulley 310. Through the first fixed pulley 310, the lifting rope 400 is laid at the top end of the column 300. A winding and unwinding assembly 500 is arranged on the bearing platform 200. The winding and unwinding assembly 500 is located at the lower side of the first fixed pulley 310. One end of the lifting rope 400 is connected to the winding and unwinding assembly 500, so as to wind and unwind the lifting rope 400 by using the winding and unwinding assembly 500. The hook 600 is connected to the other end of the lifting rope 400, and the hook 600 is also located below the first fixed pulley 310. Moreover, the hook 600 and the winding and unwinding assembly 500 are respectively arranged on both sides of the column 300. Thus, when the winding and unwinding assembly 500 winds up the lifting rope 400, the hook 600 can be driven to rise. When the winding and unwinding assembly 500 pays out the lifting rope 400, the hook 600 can be driven to descend.

[0060] The hook 600 has a hook opening, and a sealing assembly 700 is also installed on the hook 600. The sealing assembly 700 is used to open and close the hook opening of the hook 600, that is, the sealing assembly 700 can open the hook opening of the hook 600 and can also close the hook opening of the hook 600. The hook 600 is located above the outrigger 210.

[0061] The support leg 800 is connected to the base 100 through a lifting mechanism 900. The lifting mechanism 900 is used to drive the support leg 800 to lift and lower. Moreover, when moving, the support leg 800 is driven by the lifting mechanism 900 to lift off the ground. When not moving, the support leg 800 is driven by the lifting mechanism 900 to land on the ground.

[0062] Through the above structure, the material handling device for construction sites provided by the present embodiment is safer when used to transport materials. Specifically, a sealing assembly 700 for opening and closing the hook mouth is installed on the hook 600, and a support leg 800 is installed on the base 100 equipped with a roller 110 through a lifting mechanism 900, and an extension rod 210 is arranged under the hook 600. In this way, when it is not necessary to move, the lifting mechanism 900 is used to drive the support leg 800 to land on the ground, and the support leg 800 is used to cooperate with the roller 110 to support the base 100. The friction between the support leg 800 and the ground prevents the handling device from being displaced unnecessarily when taking and placing materials. When it is necessary to move, , the lifting device is used to lift the support leg 800 off the ground. At this time, only the roller 110 is in contact with the ground, which is convenient for movement. Moreover, when the hook 600 is hung with materials, the sealing component 700 is used to close the hook mouth of the hook 600 to prevent the materials from falling off the hook 600. When the materials need to be taken or placed, the sealing component 700 is opened from the hook mouth of the hook 600. In addition, the materials hoisted on the hook 600 can be overlapped on the above-mentioned outrigger 210, so that the materials are not only hooked on the hook 600, but also overlapped on the outrigger 210. In this way, even if the materials fall off the hook 600, the outrigger 210 can also play a certain supporting role for the fallen materials.

[0063] An optional implementation of this embodiment is as follows: the lifting mechanism 900 includes two outrigger plates 910, two first electric push rods 920 and a frame 930, wherein:

[0064] The two extension plates 910 are respectively welded or bolted to the middle positions of the two opposite outer side walls of the base 100, and the extension plates 910 extend out of the outer side walls of the base 100. Two first electric push rods 920 are respectively installed on the two extension plates 910, and the telescopic rods of the first electric push rods 920 face upward. Of course, batteries can be installed on the columns 300 to power the first electric push rods 920. The frame 930 is connected to the top of the telescopic rods of the two first electric push rods 920, and the base 100 is located on the inner side of the frame 930, so that the first electric push rods 920 can drive the frame 930 to rise and fall compared to the base 100.

[0065] There are four supporting legs 800, all of which are connected to the frame 930, and all of which are located below the frame 930, and the four supporting legs 800 are located at the four vertices of the same rectangle. Optionally, the frame 930 is a square frame, and the four supporting legs 800 are located at the four corners of the frame 930, respectively.

[0066] When the transport device needs to be stopped at a certain place and materials are placed on it, the first electric push rod 920 is retracted to make the frame 930 drive the support rod to descend, so that the bottom of the support rod falls on the ground. The four support rods can better support and reduce the probability of the transport device tipping over, and can also prevent the stopped transport device from moving without reason. When it is necessary to move, the first electric push rod 920 is extended to make the frame 930 drive the support rod to move upward, so that the support rod is separated from the ground.

[0067] Of course, the lifting mechanism 900 may also be other devices or mechanisms that can output linear motion, such as a linear motor, etc., as long as it can drive the support rod to move up and down.

[0068] More preferably, the support leg 800 comprises a screw rod 810 and a threaded tube 820, wherein:

[0069] An outer convex plate 940 is welded and fixed on the outer wall of the above-mentioned frame 930 or is integrally formed therewith. The outer convex plate 940 extends out of the outer wall of the above-mentioned frame 930. The top end of the screw rod 810 is welded and fixed on the bottom wall of the above-mentioned outer convex plate 940. The screw rod 810 extends vertically. The above-mentioned threaded tube 820 is threadedly connected to the above-mentioned screw rod 810. A pad is provided at the bottom end of the threaded tube 820.

[0070] When the lifting mechanism 900 drives the frame 930 to drive the four support rods to descend synchronously, if a certain support rod cannot land on the ground at the same time as the other support rods, the length of the support rod that has not landed on the ground can be adjusted. The specific adjustment method is to rotate the threaded tube 820 of the support rod so that the threaded tube 820 descends on the stud. In actual use, if the ground is uneven, the above situation may occur. At this time, the length of a certain support rod can be adjusted to make all four support rods land on the ground. Of course, the above support rod can also be a straight rod with an unadjustable length.

[0071] In addition, the number of the support rods may be more, such as six or eight.

[0072] An optional implementation of this embodiment is as follows: the sealing assembly 700 includes a protrusion 710 and a round rod 720, wherein:

[0073] The protrusion 710 is integrally formed or welded and fixed on the outer wall of the hook 600. The protrusion 710 is located at the hook mouth side of the hook 600 and below the hook mouth of the hook 600. The protrusion 710 is provided with a through circular hole, which penetrates the upper surface and the lower surface of the protrusion 710. The hook 600 is provided with an extension part 610 located above its hook mouth. The extension part 610 is provided with a through hole 611 facing the through circular hole. The hole wall of the through hole 611 is provided with a notch 612, that is, the through hole and the through hole 611 are coaxial and have the same diameter.

[0074] The round rod 720 is slidably inserted into the through hole and the round through hole 611, the bottom end of the round rod 720 is located below the protrusion 710, and a handle 730 having an outer diameter larger than the through hole is bolted and fixed to the bottom end of the round rod 720, and the setting of the handle 730 facilitates the user to rotate the round rod 720. A block 721 corresponding to the notch 612 is provided at the top end of the round rod 720. When the block 721 rotates to face the notch 612, the notch 612 gives way to the block 721. At this time, the block 721 can pass through the notch 612, and the round rod 720 can move up and down in the round hole 611 and the through hole; when the block 721 rotates to be misaligned with the notch 612, the extension part 610 blocks the block 721, that is, the block 721 rotates to be misaligned with the notch 612, so the block 721 cannot pass through the notch 612, so that the round rod 720 cannot pass through the round hole 611.

[0075] Through the above structure, when placing or taking materials on the hook 600, the block 721 is rotated so that the block 721 is aligned with the notch 612 on the side wall of the round through hole 611, and then the handle 730 is pulled downward to make the round rod 720 slide out of the round through hole 611, thereby opening the hook mouth of the hook 600; when the material is hooked on the hook 600, the round rod 720 is rotated so that the block 721 is aligned with the notch 612 and the round rod 720 is pushed upward so that the round rod 720 is lifted up. The block 721 passes through the notch 612 from below and the round rod 720 passes through the round through hole 611, and finally the block 721 on the round rod 720 is located above the protruding portion 610, and then the handle 730 is rotated to displace the block 721 and the notch 612. At this time, the block 721 is blocked by the protruding portion 610 and cannot pass through the notch 612. At this time, the round rod 720 is blocked in the hook opening of the hook 600, thereby closing the hook opening of the hook 600. This type of sealing assembly 700 can stably close the hook opening of the hook 600, thereby preventing the material from falling off the hook 600, and when opening and closing, it only needs to rotate the handle 730 and push and pull the round rod 720 up and down, which is simple and convenient to operate.

[0076] Of course, the above-mentioned sealing component 700 may also include a baffle hinged to the hook 600 through a hinge shaft, and a torsion spring is arranged at the hinge shaft. This form of the sealing component 700 has been widely used on the existing hook 600, so it will not be described in detail here. Although this type of sealing component 700 can also play a role in blocking the hook opening of the hook 600, there are technical problems of poor stability. During use, the torsion spring is easily damaged, and after being damaged, it can no longer open and close the hook opening of the hook 600. Moreover, it is very inconvenient to replace the torsion spring after it is damaged. Therefore, after the torsion spring is damaged, the hook 600 basically loses its sealing function.

[0077] Optionally, the sealing component 700 provided in this embodiment further includes a spring 740. The spring 740 is sleeved outside the round rod 720, and both ends of the spring 740 are respectively abutted against the convex block 710 and the handle 730. The clamping block 721 and the top end of the round rod 720 form a clamping portion, and the outer diameter of the clamping portion is larger than the aperture of the through hole. The clamping portion and the above-mentioned handle 730 can prevent the round rod 720 from falling off from the through hole and the above-mentioned round through hole 611. The setting of the spring 740 elastically connects the round rod 720 to the hook 600. Specifically, when the round rod 720 blocks the hook opening of the above-mentioned hook 600, that is, when the clamping block 721 on the round rod 720 is placed above the above-mentioned outer extension 610, the above-mentioned handle 730 compresses the spring 740. Therefore, when it is necessary to open the hook opening of the above-mentioned hook 600, it is necessary to rotate the above-mentioned handle 730 to make the clamping block 721 of the round rod 720 face the above-mentioned notch 612. Under the action of the spring 740, the round rod 720 will automatically move downward, so that the clamping block 721 passes through the notch 612 and the round rod 720 finally falls off from the above-mentioned round through hole 611, thereby opening the hook opening of the above-mentioned hook 600. When disassembling and assembling the spring 740, only the above-mentioned handle 730 needs to be removed. Moreover, the setting of the spring 740 is only for the convenience of opening the hook opening of the hook 600. Therefore, even if the spring 740 is damaged, it is very easy to replace, and the damaged spring 740 does not affect the normal use of the round rod 720.

[0078] An optional implementation manner of this embodiment is as follows: The above-mentioned lifting rope 400 includes a first steel wire rope 420 and a second steel wire rope 430 tied together by a strap 410. One ends of the first steel wire rope 420 and the second steel wire rope 430 are both connected to the winding and unwinding assembly 500, and the other ends of the first steel wire rope 420 and the second steel wire rope 430 are both connected to the hook 600. Among them, the first steel wire rope 420 is in a straightened state, and the second steel wire rope 430 is in a relaxed state. The number of the second steel wire ropes 430 is two, and the two second steel wire ropes 430 are respectively arranged on both sides of the above-mentioned first steel wire rope 420.

[0079] When this type of sling 400 is in use, it mainly relies on the first steel wire rope 420 to bear the weight. However, after the first steel wire rope 420 breaks, the second steel wire rope 430 in a relaxed state will be immediately straightened and begin to bear the weight to prevent materials from falling. Therefore, the sling 400 is safer to use.

[0080] An optional implementation of this embodiment is as follows: the retractable assembly 500 includes a first motor 510, a worm 520, a retractable shaft 530 and a turbine 540, wherein:

[0081] A bracket 220 is provided on the support platform 200, and a first motor 510 is mounted on the bracket 220, and the rotating shaft of the first motor 510 extends in the horizontal direction. Of course, the first motor 510 is also electrically connected to the battery, so that the battery is used to power the first motor 510. The worm 520 is rotatably mounted on the bracket 220, and the worm 520 is connected to the output shaft of the first motor 510, so that the worm 520 is driven to rotate by the first motor 510.

[0082] Two support plates 230 are also provided on the support platform 200, and a reeling shaft 530 is rotatably installed between the two support plates 230, and one end of the sling 400 is connected to the reeling shaft 530. A turbine 540 is coaxially provided on the reeling shaft 530, and the turbine 540 is located outside the two support plates 230, and the turbine 540 is meshed with the worm 520. In this way, the turbine 540 and the worm 520 can transmit the rotation output by the first motor 510 to the reeling shaft 530, thereby driving the reeling shaft 530 to rotate, and the rotating reeling shaft 530 can retract and release the sling 400. It is easy to understand that the first motor 510 and the battery are both electrically connected to the circuit board, so that the circuit board is used to control the power supply of the first motor 510, thereby controlling the forward and reverse rotation of the first motor 510, that is, driving the reeling shaft 530 to rotate forward and reverse, for example, releasing the sling 400 when rotating forward, and retracting the sling 400 when rotating reversely.

[0083] The cooperation between the turbine 540 and the worm 520 is such that even if the first motor 510 fails, the turbine 540 and the worm 520 will be automatically locked and will not move without reason, thereby preventing the hanging rope 400 from being released without reason and causing materials to fall when the first motor 510 fails.

[0084] Of course, the retractable assembly 500 may also be a mechanism such as a winch that can retract the suspension rope 400 .

[0085] An optional implementation of this embodiment is as follows: an installation cavity is provided in the middle of the top surface of the base 100, a second motor 240 is installed in the installation cavity, the support 200 is overlapped on the top surface of the base 100 and covers the installation cavity, the support 200 is connected to the output shaft of the second motor 240, so that the support 200 is driven to rotate on the top surface of the base 100 by the second motor 240, and a ball 250 is also installed between the top surface of the base 100 and the support 200. In this way, the support 200 can rotate on the base 100, and the rotation angle is controlled by the second motor 240, so that it is convenient for the user to control the position of the hook 600, so that it is more convenient for the user to carry the material to the specified position, and it is also more convenient for the user to take and put the material. The second motor 240 is also electrically connected to the circuit board, so that the running state of the second motor 240 is controlled by the circuit board. The setting of the ball 250 can make the rotation of the support 200 on the base 100 more flexible.

[0086] In addition, the above-mentioned circuit board can also be replaced by a device with electronic control function such as PLC.

[0087] Of course, the support platform 200 in this embodiment can also be a structure fixedly installed on the top surface of the base 100, or a boss formed integrally with the above-mentioned base 100.

[0088] An optional implementation of this embodiment is as follows: a vertical guide rail 330 is connected to one side of the column 300, and a vertical slide groove 331 is provided on the vertical guide rail 330. A slider 620 is provided on the outer wall of the hook 600. The slider 620 is located on the side away from the hook mouth of the hook 600, and the slider 620 is slidably installed in the vertical slide groove 331. A vertical guide bar is provided on the side wall of the vertical slide groove 331, and a guide groove is provided on the side wall of the slider 620, and the vertical guide bar is slidably inserted in the guide groove.

[0089] Through the cooperation between the vertical guide rail 330 and the slider 620, the position of the hook 600 is restricted so that the hook 600 can only move up and down, thereby avoiding the hook 600 from swinging when hoisting materials, and further enhancing the structural stability and safety of use.

[0090] Preferably, a transverse chute 211 is formed on the top surface of the telescopic rod 210. The bottom end of the vertical guide rail 330 is slidably mounted in the transverse chute 211. A second electric push rod 320 is installed inside the column 300. The telescopic rod of the second electric push rod 320 faces the vertical guide rail 330 and is connected to the vertical guide rail 330, so as to use the second electric push rod 320 to drive the vertical guide rail 330 to translate on the telescopic rod 210. In this way, the user can adjust the horizontal distance between the vertical guide rail 330 and the column 300 as needed, so as to change the horizontal position of the lifting hook 600 relative to the base 100 and the bearing platform 200, thereby making it more convenient to lift materials. A second fixed pulley 332 is rotatably installed at the top of the vertical guide rail 330, and the lifting rope 400 is wound around the second fixed pulley 332.

[0091] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope recorded in the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A material handling device for use at a construction site, characterized in that: include: A base (100) is provided with a roller (110), and a support platform (200) is provided on the base (100); A column (300) is arranged on the support platform (200), a first fixed pulley (310) is arranged at the top of the column (300), and the support platform (200) is provided with an outrigger rod (210) located at the bottom of the column (300), and the outrigger rod (210) extends out of the outer side wall of the column (300); A suspension rope (400) is wound around the first fixed pulley (310); a retractable assembly (500) is provided on the support platform (200); one end of the suspension rope (400) is connected to the retractable assembly (500), so that the suspension rope (400) can be retracted and released by using the retractable assembly (500); A hook (600) having a hook opening, the hook (600) being connected to the other end of the lifting rope (400), and the hook (600) being located directly above the extension rod (210), and the hook (600) being further provided with a sealing assembly (700) for opening and closing the hook opening; The support leg (800) is connected to the base (100) via a lifting mechanism (900), and the lifting mechanism (900) is used to drive the support leg (800) to move up and down, and when moving, the support leg (800) is driven by the lifting mechanism (900) to be lifted off the ground, and when not moving, the support leg (800) is driven by the lifting mechanism (900) to land on the ground.

2. The material handling device for construction sites according to claim 1, characterized in that: The lifting mechanism (900) comprises: Two outwardly extending plates (910) are respectively fixedly connected to two opposite outer side walls of the base (100), and the outwardly extending plates (910) extend out of the outer side walls of the base (100); Two first electric push rods (920) are respectively mounted on the two outrigger plates (910), and the telescopic rods of the first electric push rods (920) face upwards; A frame (930) connected to the top ends of the telescopic rods of the two first electric push rods (920), and the base (100) is located on the inner side of the frame (930); The number of the supporting legs (800) is four, and the four supporting legs (800) are all located below the frame (930), and the four supporting legs (800) are located at the four vertices of the same rectangle.

3. The material handling device for construction sites according to claim 2, characterized in that: The support leg (800) comprises: A screw rod (810), an outer convex plate (940) is fixedly connected to the outer side wall of the frame (930), the outer convex plate (940) extends out of the outer side wall of the frame (930), and the top end of the screw rod (810) is fixedly connected to the bottom wall of the outer convex plate (940); The threaded tube (820) is threadedly connected to the screw rod (810).

4. The material handling device for construction sites according to claim 1, characterized in that: The sealing assembly (700) comprises: A convex block (710) is fixedly mounted on the outer wall of the hook (600), the convex block (710) is located below the hook opening of the hook (600), the convex block (710) is provided with a through circular hole, the through circular hole penetrates the upper surface and the lower surface of the convex block (710), the hook (600) is provided with an extension portion (610) located above the hook opening, the extension portion (610) is provided with a through hole (611) directly opposite to the through circular hole, and the hole wall of the through hole (611) is provided with a notch (612); A round rod (720) is slidably inserted into the through circular hole and the round through hole (611), the bottom end of the round rod (720) is located below the protrusion (710), and a handle (730) having an outer diameter greater than that of the through circular hole is fixedly connected to the bottom end of the round rod (720), and a block (721) corresponding to the notch (612) is provided at the top end of the round rod (720); When the block (721) rotates to face the notch (612), the notch (612) gives way to the block (721); When the clamping block (721) rotates to be misaligned with the notch (612), the protruding portion (610) blocks the clamping block (721).

5. The material handling device for construction sites according to claim 4, characterized in that: The sealing assembly (700) further comprises: A spring (740) is sleeved outside the round rod (720), and two ends of the spring (740) are respectively in contact with the protrusion (710) and the handle (730); The clamping block (721) and the top end of the round rod (720) form a clamping portion, and the outer diameter of the clamping portion is greater than the hole diameter of the through round hole.

6. The material handling device for construction sites according to claim 1, characterized in that: The lifting rope (400) includes a first steel wire rope (420) and a second steel wire rope (430) which are bound together by a binding belt (410), one end of the first steel wire rope (420) and the second steel wire rope (430) are connected to the retractable assembly (500), and the other end of the first steel wire rope (420) and the second steel wire rope (430) are connected to the hook (600), wherein the first steel wire rope (420) is in a straightened state, and the second steel wire rope (430) is in a relaxed state.

7. The material handling device for construction sites according to claim 6, characterized in that: The retractable assembly (500) comprises: A first motor (510), wherein a bracket (220) is disposed on the support platform (200), and the first motor (510) is mounted on the bracket (220); a worm (520) rotatably mounted on the bracket (220), the worm (520) being connected to an output shaft of the first motor (510) so as to utilize the first motor (510) to drive the worm (520) to rotate; A reeling shaft (530), wherein two support plates (230) are further provided on the support platform (200), the reeling shaft (530) is rotatably mounted between the two support plates (230), and one end of the suspension rope (400) is connected to the reeling shaft (530); A turbine (540) is disposed on the reel-up shaft (530), and the turbine (540) is meshed with the worm gear (520).

8. The material handling device for a construction site according to any one of claims 1 to 7, characterized in that: A mounting cavity is provided in the middle of the top surface of the base (100), a second motor (240) is installed in the mounting cavity, the support platform (200) is overlapped on the top surface of the base (100) and covers the mounting cavity, and the support platform (200) is connected to the output shaft of the second motor (240) so that the second motor (240) is used to drive the support platform (200) to rotate on the top surface of the base (100); A ball bearing (250) is also installed between the top surface of the base (100) and the support platform (200).

9. The material handling device for construction sites according to any one of claims 1 to 7, characterized in that: A vertical guide rail (330) is connected to one side of the column (300), and a vertical slide groove (331) is provided on the vertical guide rail (330). A slider (620) is provided on the outer wall of the hook (600), and the slider (620) is located on the side away from the hook mouth of the hook (600), and the slider (620) is installed in the vertical slide groove (331) to slide up and down.

10. The material handling device for construction sites according to claim 9, characterized in that: The top surface of the extension rod (210) is provided with a transverse slide groove (211), the bottom end of the vertical guide rail (330) is slidably mounted on the transverse slide groove (211), a second electric push rod (320) is mounted inside the column (300), a telescopic rod of the second electric push rod (320) faces the vertical guide rail (330) and is connected to the vertical guide rail (330), so that the second electric push rod (320) is used to drive the vertical guide rail (330) to translate on the extension rod (210); A second fixed pulley (332) is rotatably mounted on the top of the vertical guide rail (330), and the suspension rope (400) is wound around the second fixed pulley (332).

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