Building material lifting device

Abstract

A building material lifting device belongs to the technical field of building machinery and comprises a support frame body and a distribution trolley. The supporting frame body comprises two counter weight bases arranged oppositely, supporting columns fixedly arranged at the front end and the rear end of the upper surface of each counter weight base in the longitudinal direction, longitudinal beams connected between the tops of the two supporting columns on the same side, a cross beam connected between the two longitudinal beams and lifting equipment connected to the bottom of the cross beam through a linear driving mechanism. The two ends of the cross beam extend out of the outer sides of the longitudinal beams on the same side, an engaged type pushing chain system is further fixedly arranged on the inner surface of the balance weight base and comprises a box fixedly connected with the inner surface of the balance weight base, an outlet is formed in one end of the box, and a pushing chain of the engaged type pushing chain system extends forwards from the outlet in the horizontal direction. And the end parts of the two pushing chains are jointly connected with a distribution trolley. According to the invention, automatic distribution of building materials can be realized, the construction efficiency and the management level are improved, and a technical foundation is laid for automatic development of building construction.

Description

Technical Field

[0001] The invention belongs to the technical field of construction machinery, and in particular relates to a building material lifting device. Background Art

[0002] The most common lifting device for building materials is the gantry crane, which uses machinery such as winches to move building materials in the vertical direction. With the continuous improvement of the automation level of the construction industry, this type of lifting device has obvious defects:

[0003] 1. The position of the gantry crane needs to be moved manually. Although it is assisted by electrical equipment, the operation is still cumbersome, labor-intensive, and inflexible.

[0004] 2. It can only achieve the lifting of construction materials in the vertical direction, and it is difficult to achieve sufficient horizontal transportation to high construction platforms or low construction platforms (such as elevator shafts). As a result, construction materials cannot be transported to the right place and need to be taken manually, which poses certain safety risks.

[0005] 3. The traditional loading and unloading method of the gantry crane is to connect or unlock the construction materials with equipment such as winches directly below the gantry crane. This method requires additional equipment such as vehicles to transport the construction materials between the gantry crane, which is inefficient and labor-intensive.

[0006] 4. It is impossible to achieve coordinated cooperation between building material lifting devices, which is not conducive to improving the level of automation and intelligence in the field of construction. Summary of the invention

[0007] In view of the problems described in prior arts 1-4, the present invention discloses a building material lifting device.

[0008] To achieve the above purpose, the technical solution of the present invention is:

[0009] A building material lifting device comprises a support frame body and a distribution trolley, the support frame body comprises two counterweight bases arranged opposite to each other, support columns fixedly arranged longitudinally at the front and rear ends of the upper surface of each counterweight base, a longitudinal beam connected between the tops of the two support columns on the same side, a cross beam connected between the two longitudinal beams, and a lifting device connected to the bottom of the cross beam through a linear drive mechanism, the two ends of the cross beam extending outward from the longitudinal beam on the same side, the inner surface of the counterweight base is also fixedly provided with a meshing push chain system, the meshing push chain system comprises a box body fixedly connected to the inner surface of the counterweight base, one end of the box body is provided with an outlet, the push chain of the meshing push chain system extends horizontally forward from the outlet, and the ends of the two push chains are commonly connected to the distribution trolley.

[0010] Preferably, the linear drive mechanism includes a linear slide, a slider, a lead screw, and a motor. A linear slide is provided at the bottom of the beam, and a slider is slidably connected in the linear slide. The slider passes through and is threaded with a lead screw. Both ends of the lead screw are rotatably connected to both ends of the linear slide. One end of the lead screw passes through the end of the linear slide and is fixedly connected to the output shaft of the motor preset at the end of the beam. Driven by the motor, the slider moves back and forth along the beam, and a lifting device is connected to the bottom end of the slider.

[0011] Preferably, the lifting device is a robotic arm.

[0012] Preferably, the counterweight base and the four corners of the bottom of the cargo distribution trolley are provided with universal wheels, the end of the push chain is fixed with a connecting block, the side of the cargo distribution trolley is provided with a connecting rod, and the connecting block and the connecting rod are detachably connected by a steel wire rope.

[0013] Preferably, a camera is also provided at the front end of the longitudinal beam, an infrared sensor is provided on the side of the counterweight base, and a controller is provided on the top of the counterweight base. The controller is electrically connected to the power supply and is electrically connected to the motor, lifting equipment, drive motor of the meshing push chain system, camera, and infrared sensor through wires.

[0014] Preferably, the front and rear walls of the distribution cart are respectively connected with electric push rods inclined downward, the telescopic ends of the electric push rods are connected with pressure plates for pressing against the ground, and the front end of the distribution cart is also provided with a hook.

[0015] Preferably, the distribution trolley is provided with a battery and a control unit which are electrically connected to each other, a pressure sensor is provided at the bottom of the pressure plate, the upper end of the pressure plate is hinged to the telescopic end of the electric push rod, and a spring is also connected between the end of the upper surface of the pressure plate away from the distribution trolley and the outer wall of the telescopic end, and the pressure sensor is electrically connected to the control unit through a wire.

[0016] A method for using a building material lifting device includes a method for coordinating the longitudinal and horizontal movements of the building materials; a method for moving the device itself; and a method for coordinating with other lifting devices.

[0017] Preferably, the method 1 comprises:

[0018] A1. Push the empty distribution cart to a position a certain distance away from the support frame body through the meshing push chain system. After the distribution cart is distributed at this position, the meshing push chain system is used to pull the loaded distribution cart to the bottom of the crossbeam of the support frame body. The mechanical arm lifts the building materials in the distribution cart to the designated height or low position in turn, and transports them to the designated position of the construction platform under the drive of the linear drive mechanism.

[0019] B1. The meshing push chain system is retracted, and the empty trolley is placed under the beam. The building materials taken from the high or low construction platform are placed into the distribution trolley through the mechanical arm, and the building materials are moved to a position a certain distance away from the support frame body through the distribution trolley;

[0020] C1. The meshing push chain system is retracted, and the empty trolley is placed in front of the support frame body. The mechanical arm lifts the construction materials taken out from the low working platform to a certain height, and the meshing push chain system is retracted. The distribution trolley is locked at the same time, and the support frame body moves forward to above the distribution trolley. The construction materials are placed in the distribution trolley through the mechanical arm, and then the support frame body moves to the original position again. Repeat the above steps until the distribution trolley is full, the support frame body moves to the original position, and the meshing push chain system is extended to transport the construction materials to the designated position; conversely, the distribution trolley is located in front of the support frame body, and the construction materials in the distribution trolley are gradually transported to the low working construction platform through the repeated movement of the support frame body.

[0021] Preferably, the second method comprises: when the device moves forward, the delivery cart is pushed to a position a certain distance away from the support frame body through the meshing push chain system, the electric push rod on the rear side of the delivery cart extends, and when the signal detected by the pressure sensor meets the preset standard, the controller stops the extension of the electric push rod, and the meshing push chain system contracts, pulling the support frame body forward a set distance, and repeating the above steps to achieve the forward movement of the device; when the device moves backward, the electric push rod on the front side of the delivery cart extends, and when the signal detected by the pressure sensor meets the preset standard, the controller stops the extension of the electric push rod, and the meshing push chain system extends, pushing the support frame body backward a set distance, and then the electric push rod retracts to pull the delivery cart backward a certain distance, and repeating the above steps to achieve the backward movement of the device.

[0022] Preferably, the second method further comprises: connecting the hook to a fixed object at the construction site via a rope or connecting the connecting block to the fixed object via a rope after unlocking the wire rope and the connecting block, and then moving the support frame body by contracting the meshing push chain system.

[0023] Preferably, the method three includes the building material lifting device moving the building materials to the position of other gantry cranes by moving a distribution cart to distribute the building materials to the gantry crane or moving the building materials at other gantry cranes to the support frame body to realize the retrieval of the building materials; it also includes realizing the linear transfer of building materials through the cooperation between multiple building material lifting devices, that is, device one transfers the building materials to device two through the distribution cart, and after device two is connected to the distribution cart, it transfers the building materials to device three, and so on until the building materials are transferred to device N.

[0024] Preferably, the method three also includes a corner delivery method, including that when a certain angle exists between the beams of device one and device two, the distribution cart of device one moves to one end of the beam of device two, and the mechanical arm of device two takes the building materials into its own distribution cart; and a plurality of building material lifting devices surrounding the building structure under construction are used to realize the circular distribution of building materials.

[0025] The beneficial effects of the building material lifting device of the present invention are:

[0026] 1. The present invention is flexible in use and can automatically move positions, which greatly improves the applicability of use, reduces labor intensity, and improves construction efficiency.

[0027] 2. The end of the crossbeam of the present invention can extend above the construction platform, so that the building materials can be directly transported to the designated position of the construction platform, reducing the construction difficulty and construction risk.

[0028] 3. The present invention can realize the horizontal transportation and longitudinal lifting of building materials. Through the cooperation of the support frame body and the distribution cart, the source or storage of building materials can be located outside the construction site, further improving the safety of construction. Through the above arrangement, the lifting and distribution of building materials can be carried out at different addresses. Building materials can also be exported from the construction location to the designated location through the distribution cart, making the management of construction tend to be modular.

[0029] 4. The present invention can realize the transmission of construction materials by cooperating with an ordinary gantry crane or cooperating with multiple devices, and realize the automatic distribution of construction materials on the entire construction site as planned, laying a certain technical foundation for the automated development of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the top structure of the present invention.

[0031] Figure 2 It is a side structural schematic diagram of the present invention.

[0032] Figure 3 It is a schematic diagram of the cooperation between the present invention and other gantry cranes.

[0033] Figure 4 It is a schematic diagram of the corner transmission method of the present invention.

[0034] The figure shows: 1-counterweight base, 2-box, 3-push chain, 4-cargo distribution trolley, 5-connecting block, 6-wire rope, 7-electric push rod, 8-pressure plate, 9-support column, 10-longitudinal beam, 11-cross beam, 12-linear slide, 13-slider, 14-screw, 15-motor, 16-camera, 17-lifting equipment, 18-hook. DETAILED DESCRIPTION

[0035] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0036] The following embodiments may be understood as individually expressing a part of a local structure or method of the present invention, or may be understood as a combination of the embodiments to explain the connotation of a larger structure or method of the present invention.

[0037] Example 1

[0038] A building material lifting device, such as Figure 1 , 2 As shown, it includes a support frame body and a distribution trolley, the support frame body includes two counterweight bases 1 arranged oppositely, support columns 9 fixedly arranged at the front and rear ends of the upper surface of each counterweight base 1 along the longitudinal direction, a longitudinal beam 10 connected between the tops of the two support columns 9 on the same side, a cross beam 11 connected between the two longitudinal beams 10, and a lifting device 17 connected to the bottom of the cross beam 11 through a linear drive mechanism, the two ends of the cross beam 11 extend out of the outside of the longitudinal beam 10 on the same side, the inner surface of the counterweight base 1 is also fixedly provided with a meshing push chain system, the meshing push chain system includes a box body 2 fixedly connected to the inner surface of the counterweight base, one end of the box body is provided with an outlet, the push chain 3 of the meshing push chain system extends horizontally forward from the outlet, and the ends of the two push chains 3 are commonly connected to the distribution trolley 4.

[0039] In this embodiment, the distribution trolley 4 is used to load building materials and realizes forward and backward movement through a meshing push chain system. The lifting device is used to unload the building materials into the distribution trolley or lift the building materials in the distribution trolley to a desired position. The two ends of the crossbeam extend out of the longitudinal beam on the same side, such as Figure 1 As shown, it is convenient to place the crossbeam above the construction platform, so that the building materials can be directly unloaded on the construction platform to avoid manual handling. The counterweight base plays a counterweight role to prevent the support frame body from tipping over when conveying materials. Among them, the meshing push chain system is a prior art, and CN220131061U can be used. The box body is equivalent to the shell of the system (the shell of the drive part and the storage part). The push chain is driven by a drive motor, which can realize long-distance linear push-pull action and has rigidity.

[0040] It should be noted that with the development of automation and intelligence in construction, the automated distribution of building materials has become a problem that must be solved, and the existing gantry cranes are unable to achieve the above function. The above structural design of the present invention is precisely to solve this problem.

[0041] Example 2

[0042] like Figure 1 , 2 As shown, the linear drive mechanism includes a linear slide 12, a slider 13, a lead screw 14, and a motor 15. The bottom of the beam 11 is provided with a linear slide 12, and the slider 13 is slidably connected in the linear slide 12. The slider 13 penetrates and is screwed with a lead screw 14. The two ends of the lead screw 14 are rotatably connected with the two ends of the linear slide 12. One end of the lead screw 14 passes through the end of the linear slide 12 and is fixedly connected to the output shaft of the motor 15 preset at the end of the beam 11. Driven by the motor 15, the slider 13 moves back and forth along the beam 11. The bottom end of the slider 13 is connected to a lifting device 17. The present invention realizes linear drive through a ball screw structure, which can also be replaced by other linear drive mechanisms.

[0043] like Figure 1 , 2 As shown, the lifting device 17 is a mechanical arm, the purpose of which is to match the needs of automated construction.

[0044] like Figure 2 As shown, the counterweight base 1 and the four bottom corners of the cargo distribution trolley 4 are all provided with universal wheels, the end of the push chain 3 is fixedly provided with a connecting block 5, and the side of the cargo distribution trolley 4 is provided with a connecting rod, and the connecting block 5 and the connecting rod are detachably connected by a steel wire rope 6.

[0045] In this embodiment, the use environment of the present invention has certain requirements for the flatness of the ground, and the standard is that the cargo trolley and the support frame body can move normally on the ground to ensure the safety of the material transportation process. The bumpy ground or the unpaved dirt road is not suitable for the present invention. It is especially suitable for use in electromechanical installation scenarios after the ground has been paved.

[0046] Example 3

[0047] like Figure 1 , 2 As shown, a camera 16 is also provided at the front end of the longitudinal beam 10, an infrared sensor is provided on the side of the counterweight base 1 (not shown in the figure, which is a common design for the purpose of collision prevention), and a controller is provided on the top of the counterweight base 1 (not shown in the figure). The controller is electrically connected to the power supply and is electrically connected to the motor 15, the lifting device 17, the drive motor of the meshing push chain system, the camera 16, and the infrared sensor through wires.

[0048] like Figure 1 , 2As shown, the front and rear walls of the distribution trolley 4 are respectively connected with electric push rods 7 inclined downward, the telescopic ends of the electric push rods 7 are connected with a pressing plate 8 for pressing against the ground, and a hook 18 is also provided at the front end of the distribution trolley 4.

[0049] like Figure 1 , 2 As shown, the distribution trolley 4 is provided with a battery and a control unit which are electrically connected to each other, a pressure sensor (not shown in the figure) is provided at the bottom of the pressing plate 8, the upper end of the pressing plate 8 is hinged to the telescopic end of the electric push rod 7, and a spring (not marked in the figure) is connected between the end of the upper surface of the pressing plate 8 away from the distribution trolley 4 and the outer wall of the telescopic end, and the pressure sensor is electrically connected to the control unit through a wire.

[0050] In this embodiment, the spring is provided to keep the pressure plate at a certain angle. When in contact with the ground, the spring is extended and contracted to cooperate with the pressure plate to achieve compression with the ground. The electric push rod is used to provide the friction required to move the support frame body after the ground is compressed. The camera facilitates the controller to plan the movement trajectory and control the movement position of the distribution trolley and the movement position of the support frame body.

[0051] Example 4

[0052] A method for using a building material lifting device, such as Figure 1-4 As shown, it includes a method 1 for coordinating the longitudinal and horizontal movements of building materials; a method 2 for moving the device itself; and a method 3 for coordinating with other lifting devices.

[0053] Example 5

[0054] Based on Example 4, this embodiment discloses that, Figure 1-4 As shown, the method 1 comprises:

[0055] A1. Push an empty delivery trolley to a position a certain distance away from the support frame body through the meshing push chain system. After the delivery trolley is delivered at this position, the meshing push chain system is used to pull the loaded delivery trolley to the bottom of the beam of the support frame body. The mechanical arm sequentially lifts the building materials in the delivery trolley to a designated height or low position (for example, there is an elevator shaft under one end of the beam, and the construction platform is located in the elevator shaft), and transports them to the designated position of the construction platform under the drive of the linear drive mechanism;

[0056] B1. The meshing push chain system is retracted, and the empty trolley is placed under the beam. The building materials taken from the high or low construction platform are placed into the distribution trolley through the mechanical arm, and the building materials are moved to a position a certain distance away from the support frame body through the distribution trolley;

[0057] C1. The meshing push chain system is retracted, and the empty trolley is placed in front of the support frame body. The mechanical arm lifts the construction materials taken out from the low working platform to a certain height, and the meshing push chain system is retracted. The distribution trolley is locked at the same time, and the support frame body moves forward to above the distribution trolley. The construction materials are placed in the distribution trolley through the mechanical arm, and then the support frame body moves to the original position again. Repeat the above steps until the distribution trolley is full, the support frame body moves to the original position, and the meshing push chain system is extended to transport the construction materials to the designated position; conversely, the distribution trolley is located in front of the support frame body, and the construction materials in the distribution trolley are gradually transported to the low working construction platform through the repeated movement of the support frame body.

[0058] In this embodiment, A1 and B1 give examples where the construction platform is located above and below one end of the beam; C1 gives an example where the construction platform is located directly below the middle of the beam (such as the beam spanning the elevator shaft port). Since there is an opening directly below, the delivery trolley cannot enter. At this time, the construction materials can be transported or retrieved by repeatedly moving the construction platform. The method of transporting construction materials is opposite to the step of C1 and will not be described in detail.

[0059] Example 6

[0060] Based on Example 4, this embodiment discloses that, Figure 1-4 As shown, the second method includes: when the device (a building material lifting device) moves forward, the meshing push chain system pushes the delivery cart to a position a certain distance away from the support frame body, the electric push rod on the rear side of the delivery cart extends, and when the signal detected by the pressure sensor meets the preset standard, it represents that the pressure plate is pressed tightly against the ground, and the controller stops the extension of the electric push rod. At this time, the meshing push chain system contracts, and pulls the support frame body forward a set distance, and the above steps are repeated to achieve the forward movement of the device; when the device moves backward, the electric push rod on the front side of the delivery cart extends, and when the signal detected by the pressure sensor meets the preset standard, the controller stops the extension of the electric push rod. At this time, the meshing push chain system extends, pushes the support frame body backward a set distance, and then the electric push rod retracts, pulling the delivery cart backward a certain distance, and the above steps are repeated to achieve the backward movement of the device.

[0061] like Figure 1-4 As shown, the second method also includes: connecting the hook to the fixed object at the construction site through a rope or unlocking the wire rope and the connecting block and then connecting the connecting block to the fixed object through a rope, and then moving the support frame body by contracting the meshing push chain system.

[0062] This embodiment provides the principle of movement of the device. Since the main function of the device is to lift and horizontally transport building materials, the movement capability is sufficient to meet the use requirements.

[0063] Example 7

[0064] Based on Example 4, this embodiment discloses that, Figure 3 As shown, the method three includes the building material lifting device moving the building materials to the position of other gantry cranes by moving the distribution trolley to distribute the building materials to the gantry crane or moving the building materials at other gantry cranes to the support frame body to realize the use of the building materials; and also includes realizing the linear transfer of building materials through the cooperation between multiple building material lifting devices, that is, device one transfers the building materials to device two through the distribution trolley, and after device two is connected to the distribution trolley, the building materials are transferred to device three, and so on until the building materials are transferred to device N. The connection of the distribution trolley can be assisted by manual labor.

[0065] like Figure 4 As shown, the method three also includes a corner delivery method, including when there is a certain angle between the beams of device one and device two, the distribution cart of device one moves to one end of the beam of device two, and the mechanical arm of device two takes the building materials into its own distribution cart; through a number of building material lifting devices surrounding the building structure under construction, the circular distribution of building materials is realized.

[0066] In modern construction, the distribution of building materials can be designed according to the overall planning of the construction site. After the design, the automatic delivery of building materials at various construction locations can be realized through the present invention, and the distribution time and distribution quantity can be more accurately controlled, which is conducive to efficient construction management. Although the automation of the entire construction is still in its infancy, the present invention provides a certain technical foundation for this.

Claims

1. A building material lifting device, characterized by: It includes a support frame body and a distribution trolley. The support frame body includes two counterweight bases arranged opposite to each other, support columns fixedly arranged at the front and rear ends of the upper surface of each counterweight base in the longitudinal direction, a longitudinal beam connected between the tops of the two support columns on the same side, a crossbeam connected between the two longitudinal beams, and a lifting device connected to the bottom of the crossbeam through a linear drive mechanism. The two ends of the crossbeam extend out of the outside of the longitudinal beam on the same side. The inner surface of the counterweight base is also fixedly provided with a meshing push chain system. The meshing push chain system includes a box body fixedly connected to the inner surface of the counterweight base, one end of the box body is provided with an outlet, and the push chain of the meshing push chain system extends horizontally forward from the outlet, and the ends of the two push chains are commonly connected to the distribution trolley.

2. A building material lifting device as claimed in claim 1, characterized in that: The linear drive mechanism includes a linear slide, a slider, a lead screw and a motor. A linear slide is provided at the bottom of the crossbeam, a slider is slidably connected in the linear slide, the slider passes through and is screwed with a lead screw, both ends of the lead screw are rotatably connected to the two ends of the linear slide, one end of the lead screw passes through the end of the linear slide and is fixedly connected to the output shaft of the motor preset at the end of the crossbeam. Driven by the motor, the slider moves back and forth along the crossbeam, and a lifting device is connected to the bottom end of the slider; the lifting device is a mechanical arm; universal wheels are provided at the four corners of the bottom of the counterweight base and the distribution trolley, a connecting block is fixedly provided at the end of the push chain, a connecting rod is provided on the side of the distribution trolley, and the connecting block and the connecting rod are detachably connected by a steel wire rope.

3. A building material lifting device as claimed in claim 2, characterized in that: A camera is also provided at the front end of the longitudinal beam, an infrared sensor is provided on the side of the counterweight base, and a controller is provided on the top of the counterweight base. The controller is electrically connected to the power supply and is electrically connected to the motor, lifting equipment, drive motor of the meshing push chain system, camera, and infrared sensor through wires.

4. A building material lifting device as claimed in claim 3, characterized in that: The front and rear walls of the cargo distribution trolley are respectively connected with electric push rods inclined downward, the telescopic ends of the electric push rods are connected with pressing plates for pressing against the ground, and a hook is also provided at the front end of the cargo distribution trolley.

5. A building material lifting device as claimed in claim 4, characterized in that: The distribution trolley is equipped with a battery and a control unit that are electrically connected to each other. A pressure sensor is provided at the bottom of the pressure plate. The upper end of the pressure plate is hinged to the telescopic end of the electric push rod. A spring is also connected between the end of the upper surface of the pressure plate away from the distribution trolley and the outer wall of the telescopic end. The pressure sensor is electrically connected to the control unit through a wire.

6. The method for using the building material lifting device according to claim 5, characterized in that: The invention comprises a method for coordinating the longitudinal and horizontal movements of building materials; a method for moving the device itself; and a method for coordinating with other lifting devices.

7. A method for using a building material lifting device as claimed in claim 6, characterized in that: The method 1 comprises: A1. Push the empty distribution cart to a position a certain distance away from the support frame body through the meshing push chain system. After the distribution cart is distributed at this position, the meshing push chain system is used to pull the loaded distribution cart to the bottom of the crossbeam of the support frame body. The mechanical arm lifts the building materials in the distribution cart to the designated height or low position in turn, and transports them to the designated position of the construction platform under the drive of the linear drive mechanism. B1. The meshing push chain system is retracted, and the empty trolley is placed under the beam. The building materials taken from the high or low construction platform are placed into the distribution trolley through the mechanical arm, and the building materials are moved to a position a certain distance away from the support frame body through the distribution trolley; C1. The meshing push chain system is retracted, and the empty trolley is placed in front of the support frame body. The mechanical arm lifts the construction materials taken out from the low working platform to a certain height, and the meshing push chain system is retracted. The distribution trolley is locked at the same time, and the support frame body moves forward to above the distribution trolley. The construction materials are placed in the distribution trolley through the mechanical arm, and then the support frame body moves to the original position again. Repeat the above steps until the distribution trolley is full, the support frame body moves to the original position, and the meshing push chain system is extended to transport the construction materials to the designated position; conversely, the distribution trolley is located in front of the support frame body, and the construction materials in the distribution trolley are gradually transported to the low working construction platform through the repeated movement of the support frame body.

8. The method for using the building material lifting device according to claim 6, characterized in that: The second method comprises: when the device moves forward, the distribution cart is pushed to a position a certain distance away from the support frame body through the meshing push chain system, the electric push rod on the rear side of the distribution cart extends, and when the signal detected by the pressure sensor meets the preset standard, the controller stops the extension of the electric push rod, at this time the meshing push chain system contracts, and pulls the support frame body forward to move a set distance, and repeats the above steps to realize the forward movement of the device; when the device moves backward, the electric push rod on the front side of the distribution cart extends, and when the signal detected by the pressure sensor meets the preset standard, the controller stops the extension of the electric push rod, at this time the meshing push chain system extends, pushes the support frame body to move backward a set distance, and then the electric push rod retracts, and pulls the distribution cart backward a certain distance, and repeats the above steps to realize the backward movement of the device; The second method also includes: connecting the hook to the fixed object at the construction site through a rope or unlocking the wire rope and the connecting block and then connecting the connecting block to the fixed object through a rope, and then moving the support frame body by contracting the meshing push chain system.

9. The method for using the building material lifting device according to claim 6, characterized in that: The method three includes a building material lifting device moving the building materials to the position of other gantry cranes by moving a distribution cart to distribute the building materials to the gantry crane or moving the building materials at other gantry cranes to the support frame body to obtain the building materials; it also includes realizing the linear transfer of building materials through the cooperation between multiple building material lifting devices, that is, device one transfers the building materials to device two through the distribution cart, and after device two is connected to the distribution cart, it transfers the building materials to device three, and so on until the building materials are transferred to device N.

10. The method for using the building material lifting device according to claim 9, characterized in that: The method three also includes a corner delivery method, including when there is a certain angle between the beams of device one and device two, the distribution cart of device one moves to one end of the beam of device two, and the mechanical arm of device two takes the building materials into its own distribution cart; and a plurality of building material lifting devices surrounding the building structure under construction are used to realize the circular distribution of building materials.

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