A material lifting device convenient for building construction

Abstract

The present invention discloses a material lifting device convenient for building construction, which includes a support plate, a lifting drive mechanism, a moving platform, a diagonal bracing mechanism and a material blocking mechanism; the lifting drive mechanism can drive the moving platform to move up and down; a rotatable turning plate is installed inside the moving platform, and the diagonal bracing mechanism can drive the turning plate to rotate to a downwardly inclined state to achieve material discharging. When loading materials, the materials are placed on the turning plate. When it is necessary to discharge materials after being lifted to the target height, the diagonal bracing mechanism can drive the turning plate to rotate to a downwardly inclined state to achieve material discharging; there is no need to feed materials from above the fixed box, which saves time and effort, improves construction efficiency and saves construction costs. After the loading is completed, the power source of the material blocking mechanism can drive the baffle to protrude out of the top edge of the moving platform, so as to block the materials and avoid the materials from falling from the edge of the moving platform during the lifting process, improving safety.

Description

Technical Field

[0001] The present invention belongs to the field of construction equipment, and particularly relates to a material lifting device convenient for construction. Background Art

[0002] Lifting equipment for construction refers to mechanical equipment used to lift, transport, and carry personnel, materials, or equipment at construction sites. These devices have different designs and functions, but their common goal is to improve efficiency, safety, and working conditions at construction sites, thus facilitating the smooth progress of projects.

[0003] The patent document with the publication number CN115744710A discloses a lifting device for construction and its usage method. The device includes a base, a cavity is opened at the top of the base, and a first transmission component is arranged in the inner cavity of the cavity; the first transmission component includes a motor one fixedly connected to the cavity, the output shaft of the motor one penetrates to the outside of the base and is fixedly connected to a connecting plate, the left side of the top of the connecting plate is rotatably connected to a threaded rod through a bearing, and the right side of the top of the connecting plate is fixedly connected to a vertical rod. This invention has the advantages of more stable lifting process and more convenient use. In the actual use process, by driving the fixed box to rise and fall with the threaded rod, the lifting and transfer of construction materials are realized. It can not only suppress the shaking generated during the transportation of construction materials and achieve more stable transmission, but also further improve the diversification of the lifting and transfer of construction materials under the adjustment of different placement positions of the fixed box. However, in the actual feeding process of this lifting device, in order to prevent the construction materials from falling, it is necessary to put the construction materials into the fixed box from above. This feeding method requires more force, and this invention does not have a dust suppression mechanism. When feeding and discharging construction materials, a large amount of dust and debris will fly. If workers inhale too much, it may be harmful to the health of workers. Therefore, it needs to be optimized and improved. Summary of the Invention

[0004] The purpose of the present invention is to provide a material lifting device convenient for construction, which can prevent materials from falling from the edge of the moving platform during the lifting process, improving safety; and there is no need to feed materials from above the fixed box, saving time and effort, improving construction efficiency, and saving construction costs.

[0005] The present invention is implemented as follows. A material lifting device for facilitating building construction includes a support plate, a lifting drive mechanism, a moving platform, a diagonal bracing mechanism, and a material blocking mechanism. The lifting drive mechanism is fixed on the support plate, and the power output end of the lifting drive mechanism is in transmission connection with the moving platform. The lifting drive mechanism can drive the moving platform to move up and down. A rotatable turning plate is installed inside the moving platform. The diagonal bracing mechanism is fixed on the support plate, and the power output end of the diagonal bracing mechanism is in transmission connection with the turning plate. The diagonal bracing mechanism can drive the turning plate to rotate to a downward inclined state to achieve material discharging. The material blocking mechanism includes a baffle, and the power source of the material blocking mechanism can drive the baffle to protrude out of the top edge of the moving platform.

[0006] Preferably, the lifting drive mechanism includes a first motor, a first gear, a second gear, and a lead screw. The output end of the first motor is coaxially connected to the first gear. The second gear is rotatably installed at the top end of the support plate, and the second gear meshes with the first gear. The lead screw is coaxially connected to the second gear. A thread is provided on the inner side surface of the moving platform, and the thread of the moving platform meshes with the thread on the surface of the lead screw.

[0007] Preferably, the diagonal bracing mechanism includes a second motor, a threaded rod, a moving plate, and a connecting plate. The output end of the second motor is coaxially connected to the threaded rod. The threaded rod is in threaded connection with the moving plate. A limiting groove is provided inside the moving platform, and the moving plate is slidably installed in the limiting groove. When the threaded rod rotates, it can drive the moving plate to move back and forth along the limiting groove. The bottom end of the connecting plate is rotatably connected to the moving plate. A placement groove is provided on the bottom surface of the turning plate, and the connecting plate is embedded in the placement groove. During the movement of the moving plate, it can drive the free end of the connecting plate to tilt upward to support the turning plate.

[0008] Preferably, a first toothed plate is provided on the side surface of the support plate close to the moving platform. Both the material blocking mechanism and the lifting drive mechanism use the first motor as the power source. The material blocking mechanism further includes a third gear, a pulley drive assembly, a fourth gear, a second toothed plate, a connecting plate, a sliding rod, and a spring. The first toothed plate meshes with the third gear. The third gear is in transmission connection with the fourth gear through the pulley drive assembly. The second toothed plate meshes with the fourth gear. One end of the connecting plate is fixedly connected to the second toothed plate, and the other end is slidably connected to the sliding rod. The head of the sliding rod has a flange. The spring is sleeved on the outer periphery of the sliding rod and is clamped between the flange of the sliding rod and the connecting plate. The top end of the sliding rod abuts against the baffle.

[0009] Preferably, the pulley drive assembly includes a first pulley, a first pulley mounting bracket, a second pulley mounting bracket, a belt, and a second pulley; the first pulley is fixed to the end face of the third gear, the top end of the first pulley mounting bracket is fixedly connected to the moving platform, the first pulley is rotatably mounted at the bottom end of the first pulley mounting bracket, the top end of the second pulley mounting bracket is fixedly connected to the moving platform, the second pulley is rotatably mounted at the bottom end of the second pulley mounting bracket, the fourth gear is fixed to the end face of the second pulley, and the first pulley and the second pulley are connected by the belt.

[0010] Preferably, through grooves penetrating in the thickness direction are formed at both side edges of the moving platform, the baffle is vertically aligned with the through grooves, and when the baffle rises, it can pass upward through the through grooves and protrude out of the top surface of the moving platform.

[0011] Preferably, the material lifting device of the present invention further includes a dust suction mechanism, the dust suction mechanism includes a suction fan, a collection chamber, a suction pipe, and a dust suction plate, the suction fan is internally connected to the collection chamber through a pipe, and the collection chamber is connected to the dust suction plate through the suction pipe; both the suction fan and the collection chamber are fixed to the support plate, and the dust suction plate is located above the moving platform.

[0012] Preferably, the dust suction mechanism further includes a T-shaped connecting pipe, an annular plate, a sealing gasket, and a threaded block, the T-shaped connecting pipe is fixed at the dust suction port of the collection chamber, the annular plate is fixed on the top surface of the collection chamber, the sealing gasket is embedded in the annular plate, both the annular plate and the sealing gasket are sleeved on the outer periphery of the T-shaped connecting pipe, the end of the suction pipe has a T-shaped connecting groove, the end of the suction pipe is docked and clamped with the T-shaped connecting pipe, the end of the suction pipe is provided with an external thread, and the external thread of the suction pipe is connected to the internal thread inside the threaded block.

[0013] Preferably, the dust suction mechanism further includes an intercepting plate for intercepting debris and dust, a storage groove is provided inside the collection chamber, the notch of the storage groove is located on the outer side surface of the collection chamber, the intercepting plate is slidably installed in the storage groove, and a rotatable limiting piece is provided on the outer side surface of the collection chamber. By rotating the limiting piece, it can block the intercepting plate to prevent the intercepting plate from detaching from the collection chamber.

[0014] Preferably, the material lifting device of the present invention further includes a base, and the support plate is vertically fixed on the base; the top end of the lead screw is coaxially connected to the second gear, and its bottom end is rotatably connected to the base.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The material lifting device of the present invention is provided with a moving platform and a diagonal bracing mechanism. Inside the moving platform, a rotatable turning plate is installed. When loading materials, the materials are placed on the turning plate. When it needs to be lifted to the target height and unloaded, the diagonal bracing mechanism can drive the turning plate to rotate to a downward inclined state to achieve unloading; there is no need to feed materials from above the fixed box, which saves time and effort, improves construction efficiency and saves construction costs.

[0017] 2. The material lifting device of the present invention is provided with a material blocking mechanism. The material blocking mechanism includes a baffle. After the feeding is completed, the power source of the material blocking mechanism can drive the baffle to protrude out of the top edge of the moving platform, so as to block the materials and prevent the materials from falling from the edge of the moving platform during the lifting process, improving safety. Brief Description of the Drawings

[0018] Figure 1 is a three-dimensional structural schematic diagram of a material lifting device for facilitating building construction provided by an embodiment of the present invention;

[0019] Figure 2 is a three-dimensional structural schematic diagram of another angle of a material lifting device for facilitating building construction provided by an embodiment of the present invention;

[0020] Figure 3 is an exploded structural schematic diagram of a partial structure of a material lifting device for facilitating building construction provided by an embodiment of the present invention;

[0021] Figure 4 is Figure 3 an enlarged view of area A in

[0022] Figure 5 is an exploded structural schematic diagram of a connecting plate, a threaded rod and a moving plate in a material lifting device for facilitating building construction provided by an embodiment of the present invention;

[0023] Figure 6 is Figure 5 an enlarged view of area B in

[0024] Figure 7 is an exploded structural schematic diagram of an intercepting plate, an exhaust pipe and a threaded block in a material lifting device for facilitating building construction provided by an embodiment of the present invention;

[0025] Figure 8 is Figure 7 an enlarged view of area C in

[0026] Reference numerals in the drawings:

[0027] 1. Base; 2. Support plate; 21. First toothed plate; 3. Moving table; 31. Rotating plate; 311. Placing groove; 32. Limiting groove; 33. Sliding groove; 41. First motor; 42. First gear; 43. Second gear; 44. Lead screw; 51. Second motor; 52. Threaded rod; 53. Moving plate; 54. Connecting plate; 61. Third gear; 62. Fourth gear; 63. Second toothed plate; 64. Connecting plate; 65. Slide bar; 66. Spring; 67. Baffle; 68. First pulley; 69. First pulley mounting bracket; 6a. Second pulley mounting bracket; 6b. Belt; 6c. Second pulley; 71. Exhaust fan; 72. Collection chamber; 73. Exhaust duct; 74. Dust suction plate; 75. Intercepting plate; 76. T-shaped connecting pipe; 77. Ring plate; 78. Gasket; 79. Threaded block; 7a. Limiting piece. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 should not be construed as a limitation of the present invention. The terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] Refer to Figure 1 and Figure 2 , which shows a material lifting device for convenient building construction provided in this embodiment, including a base 1, a support plate 2, a lifting drive mechanism, a moving table 3, a bracing mechanism, a material blocking mechanism, and a dust suction mechanism.

[0031] The support plate 2 is vertically fixed on the base 1. The lifting drive mechanism includes a first motor 41, a first gear 42, a second gear 43, and a lead screw 44. The output end of the first motor 41 is coaxially connected to the first gear 42. The second gear 43 is rotatably installed at the top of the support plate 2, and the second gear 43 meshes with the first gear 42. The lead screw 44 is vertically arranged, its top is coaxially connected to the second gear 43, and its bottom is rotatably connected to the base 1. The moving table 3 is used to place materials. The inner side of the moving table 3 is provided with threads, and the threads of the moving table 3 mesh with the threads on the surface of the lead screw 44 to achieve a transmission connection with the lead screw 44.

[0032] Starting the first motor 41 can drive the first gear 42 to rotate. Under the meshing action, it will drive the second gear 43 to rotate, and then drive the lead screw 44 to rotate. During the rotation of the lead screw 44, the rotational motion is converted into a linear motion in the vertical direction of the moving table 3, so as to realize the lifting of materials or the reset of the moving table. Due to the setting of the first gear 42 and the second gear 43, the rotational speed can be reduced during the operation of the first motor 41, and at the same time, the torque can be increased. Furthermore, it can cooperate with the lead screw 44 to perform the up and down movement of the moving table 3. During this process, the moving table 3 will smoothly slide along the height direction of the support plate 2, effectively improving the stability of the moving table 3 during the up and down movement.

[0033] Refer to Figure 3 and Figure 4 As shown in the figure, a rotatable turning plate 31 is installed inside the moving table 3. The diagonal bracing mechanism includes a second motor 51, a threaded rod 52, a moving plate 53, and a connecting plate 54. The output end of the second motor 51 is coaxially connected to the threaded rod 52. The threaded rod 52 is threadedly connected to the moving plate 53. A limiting groove 32 is provided inside the moving table 3, and the moving plate 53 is slidably installed in the limiting groove 32. When the threaded rod 52 rotates, it can drive the moving plate 53 to move back and forth along the limiting groove 32. The bottom end of the connecting plate 54 is rotatably connected to the moving plate 53. A placement groove 311 is provided on the bottom surface of the turning plate 31, and the connecting plate 54 is embedded in the placement groove 311.

[0034] When the second motor 51 works, it can drive the moving plate 53 to slide in the limiting groove 32. During the sliding process of the moving plate 53, it can drive the free end of the connecting plate 54 to tilt upward. Since the connecting plate 54 is embedded in the placement groove 311 on the bottom surface of the turning plate 31, the free end of the connecting plate 54 can apply a force to the turning plate 31 to support the turning plate 31, thereby lifting the construction materials to achieve material discharging.

[0035] Refer to Figure 5 and Figure 6, on the side of the support plate 2 close to the moving platform 3, there is a first toothed plate 21. The material blocking mechanism includes a third gear 61, a pulley drive assembly, a fourth gear 62, a second toothed plate 63, a connecting plate 64, a sliding rod 65, a spring 66 and a baffle 67. The first toothed plate 21 meshes with the third gear 61, and the third gear 61 is drivingly connected to the fourth gear 62 through the pulley drive assembly; the second toothed plate 63 meshes with the fourth gear 62. One end of the connecting plate 64 is fixedly connected to the second toothed plate 63, and the other end is slidably connected to the sliding rod 65. The head of the sliding rod 65 has a flange. The spring 66 is sleeved on the outer periphery of the sliding rod 65 and is clamped between the flange of the sliding rod 65 and the connecting plate 64; the top end of the sliding rod 65 abuts against the baffle 67.

[0036] Specifically, the pulley drive assembly includes a first pulley 68, a first pulley mounting bracket 69, a second pulley mounting bracket 6a, a belt 6b and a second pulley 6c; the first pulley 68 is fixed to the end face of the third gear 61. The top end of the first pulley mounting bracket 69 is fixedly connected to the moving platform 3. The first pulley 68 is rotatably mounted at the bottom end of the first pulley mounting bracket 69. The top end of the second pulley mounting bracket 6a is fixedly connected to the moving platform 3. The second pulley 6c is rotatably mounted at the bottom end of the second pulley mounting bracket 6a. The fourth gear 62 is fixed to the end face of the second pulley 6c. The first pulley 68 and the second pulley 6c are connected by the belt 6b.

[0037] On both sides of the moving platform 3, through grooves 33 penetrating in the thickness direction are provided. The baffle 67 is vertically aligned with the through grooves 33. When the baffle 67 rises, it can pass upward through the through grooves 33 and protrude out of the top surface of the moving platform 3.

[0038] During the upward movement of the moving platform 3, under the action of the first toothed plate 21, it will drive the third gear 61 and the first pulley 68 to rotate. Under the action of the belt 6b, it will drive the second pulley 6c and the fourth gear 62 to rotate. Under the meshing action, the fourth gear 62 will drive the second toothed plate 63 to move upward, and will drive the connecting plate 64 to slide on the surface of the sliding rod 65. The spring 66 can provide a buffer space for the baffle 67. As the second toothed plate 63 rises, the connecting plate 64 continuously compresses the spring 66. Thus, under the action of the strength of the spring 66 itself, it can drive the baffle 67 to protrude upward from the through grooves 33 out of the upper surface of the moving platform 3 and stably stay in the protruding state to block the material. Correspondingly, when the moving platform 3 moves downward, the second toothed plate 63 descends, which will drive the connecting plate 64 to move downward. The spring 66 releases the pressure on the head of the sliding rod 65. The baffle 67 falls back under its own gravity and retracts into the through grooves 33.

[0039] In this embodiment, the power source of the material blocking mechanism indirectly comes from the first motor 41 in the lifting drive mechanism, and there is no need to additionally provide a power source for the material blocking mechanism, which can save equipment costs and simplify the equipment structure.

[0040] Reference Figure 7 and Figure 8 The dust collection mechanism includes an exhaust fan 71, a collection chamber 72, an exhaust pipe 73, a dust collection plate 74, an interception plate 75 for intercepting debris and dust, a T-shaped connecting pipe 76, a ring plate 77, a sealing gasket 78 and a threaded block 79.

[0041] The exhaust fan 71 is connected to the inside of the collection chamber 72 through a pipeline, and the collection chamber 72 is connected to the dust collecting plate 74 through an exhaust pipe 73; the exhaust fan 71 and the collection chamber 72 are both fixed on the support plate 2, and the dust collecting plate 74 is located above the moving platform 3. A storage groove is provided inside the collection chamber 72, and the notch of the storage groove is located on the outer side of the collection chamber 72. The interception plate 75 is slidably installed in the storage groove. A rotatable limiting plate 7a is provided on the outer side of the collection chamber 72. By rotating the limiting plate 7a, it can block the interception plate 75 to prevent the interception plate 75 from leaving the collection chamber 72.

[0042] The T-shaped connecting tube 76 is fixed at the dust suction port of the collecting chamber 72, and the ring plate 77 is fixed on the top surface of the collecting chamber 72. A sealing gasket 78 is embedded in the ring plate 77. The ring plate 77 and the sealing gasket 78 are both sleeved on the outer periphery of the T-shaped connecting tube 76. The end of the exhaust pipe 73 has a T-shaped connecting groove 731. The end of the exhaust pipe 73 is connected to the T-shaped connecting tube 76 and clamped. The end of the exhaust pipe 73 is provided with an external thread, and the external thread of the exhaust pipe 73 is connected to the internal thread inside the thread block 79.

[0043] Start the exhaust fan 71 and absorb the dust, impurities and debris flying during the loading and unloading process through the exhaust pipe 73 and the dust suction plate 74, and suck them into the collection chamber 72 through the exhaust pipe 73, and finally intercept the debris and dust under the action of the interception plate 75.

[0044] When the dust collecting plate needs to be maintained, first rotate the thread block 79 and drive the thread block to move away from the connection between the T-shaped connecting groove 731 and the T-shaped connecting tube 76 under the action of the thread, then the dust collecting plate 74 and the exhaust pipe 73 can be quickly pulled out along the T-shaped connecting groove 731, and then the dust collecting plate 74 can be maintained to prevent the dust collecting plate 74 from being blocked and affecting the dust suppression effect. During installation, first connect the exhaust pipe 73 to the T-shaped connecting tube 76 along the T-shaped connecting groove 731, then rotate the thread block 79 and drive the thread block 79 to rest against the connection between the T-shaped connecting groove 731 and the T-shaped connecting tube 76 under the action of the thread, and the sealing pad 78 will be squeezed during the descending process of the thread block 79 to obtain a higher sealing effect.

[0045] In summary, this embodiment has the following advantages and positive effects:

[0046] 1. The material lifting device of this embodiment is provided with a moving platform 3 and a diagonal support mechanism. A reversible turn plate 31 is installed inside the moving platform 3. When loading materials, the materials are placed on the turn plate 31. When the materials are lifted to the target height and need to be unloaded, the diagonal support mechanism can drive the turn plate 31 to rotate to a downwardly inclined state to realize unloading. There is no need to feed materials from above the fixed box, which saves time and effort, improves construction efficiency and saves construction costs.

[0047] 2. The material lifting device of this embodiment is provided with a material blocking mechanism, which includes a baffle 67. After the loading is completed, the power source of the material blocking mechanism can drive the baffle 67 to protrude out of the edge of the top surface of the movable platform 3, thereby blocking the material to prevent the material from falling from the edge of the movable platform during the lifting process, thereby improving safety.

[0048] 3. The material lifting device of this embodiment is provided with a dust collection mechanism, which can effectively clean the dust, debris and waste generated during the loading and unloading process of construction materials and collect them uniformly, thereby improving the working environment. At the same time, it can reduce the harm to the body caused by workers inhaling dust, debris and waste during work, and can quickly disassemble and assemble the dust collection plate 74 and the collection chamber 72, which is convenient for regular maintenance of the dust collection plate 74 and increases its service life.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A material lifting device for construction, characterized in that: It includes a support plate, a lifting drive mechanism, a mobile platform, a diagonal support mechanism and a material blocking mechanism; the lifting drive mechanism is fixed to the support plate, the power output end of the lifting drive mechanism is transmission-connected with the mobile platform, and the lifting drive mechanism can drive the mobile platform to move up and down; a reversible rotating plate is installed inside the mobile platform, the diagonal support mechanism is fixed to the support plate, the power output end of the diagonal support mechanism is transmission-connected with the rotating plate, and the diagonal support mechanism can drive the rotating plate to rotate to a downwardly inclined state to realize material unloading; the material blocking mechanism includes a baffle, and the power source of the baffle mechanism can drive the baffle to protrude from the edge of the top surface of the mobile platform; The diagonal support mechanism includes a second motor, a threaded rod, a movable plate and a connecting plate; the output end of the second motor is coaxially connected to the threaded rod, the threaded rod is threadedly connected to the movable plate, a limiting groove is provided in the movable platform, the movable plate is slidably installed in the limiting groove, and the threaded rod can drive the movable plate to move forward and backward along the limiting groove when it rotates; the bottom end of the connecting plate is rotatably connected to the movable plate, the bottom surface of the rotating plate is provided with a placement groove, the connecting plate is embedded in the placement groove, and the movable plate can drive the free end of the connecting plate to tilt upward during the movement to support the rotating plate; A first tooth plate is provided on the side of the support plate close to the movable platform, and the material blocking mechanism and the lifting drive mechanism both use the first motor as a power source; the material blocking mechanism also includes a third gear, a pulley transmission assembly, a fourth gear, a second tooth plate, a connecting plate, a sliding rod and a spring; the first tooth plate is meshed with the third gear, and the third gear is connected to the fourth gear through the pulley transmission assembly; the second tooth plate is meshed with the fourth gear, one end of the connecting plate is fixedly connected to the second tooth plate, and the other end is slidably connected to the sliding rod, the sliding rod head has a flange, the spring is sleeved on the outer periphery of the sliding rod, and is clamped between the flange of the sliding rod and the connecting plate; the top of the sliding rod abuts against the baffle plate.

2. The material lifting device according to claim 1, characterized in that: The lifting drive mechanism includes a first motor, a first gear, a second gear and a screw rod; the output end of the first motor is coaxially connected to the first gear, the second gear is rotatably mounted on the top of the support plate, and the second gear is meshed with the first gear; the screw rod is coaxially connected to the second gear, the inner side surface of the moving platform is provided with a thread, and the thread of the moving platform is meshed with the thread on the surface of the screw rod.

3. The material lifting device according to claim 1, characterized in that: The pulley transmission assembly includes a first pulley, a first pulley mounting frame, a second pulley mounting frame, a belt and a second pulley; the first pulley is fixed to the end face of the third gear, the top end of the first pulley mounting frame is fixedly connected to the moving platform, the first pulley is rotatably mounted on the bottom end of the first pulley mounting frame, the top end of the second pulley mounting frame is fixedly connected to the moving platform, the second pulley is rotatably mounted on the bottom end of the second pulley mounting frame, the fourth gear is fixed to the end face of the second pulley, and the first pulley and the second pulley are connected by the belt.

4. The material lifting device according to claim 1, characterized in that: The two side edges of the movable platform are provided with slide grooves penetrating the thickness direction thereof, the baffle plate is vertically aligned with the slide grooves, and when the baffle plate is raised, it can pass through the slide grooves upwards and protrude out of the top surface of the movable platform.

5. The material lifting device according to claim 1, characterized in that: It also includes a dust suction mechanism, which includes an exhaust fan, a collection chamber, an exhaust pipe and a dust suction plate. The exhaust fan is connected to the inside of the collection chamber through a pipeline, and the collection chamber is connected to the dust suction plate through the exhaust pipe; the exhaust fan and the collection chamber are both fixed on the support plate, and the dust suction plate is located above the moving platform.

6. The material lifting device according to claim 5, characterized in that: The dust suction mechanism also includes a T-shaped connecting tube, a ring plate, a sealing gasket and a threaded block. The T-shaped connecting tube is fixed at the dust suction port of the collecting chamber, the ring plate is fixed on the top surface of the collecting chamber, the sealing gasket is embedded in the ring plate, the ring plate and the sealing gasket are both sleeved on the outer periphery of the T-shaped connecting tube, the end of the exhaust pipe has a T-shaped connecting groove, the end of the exhaust pipe is docked with and clamped with the T-shaped connecting tube, the end of the exhaust pipe is provided with an external thread, and the external thread of the exhaust pipe is connected to the internal thread inside the threaded block.

7. The material lifting device according to claim 6, characterized in that: The dust suction mechanism also includes an interception plate for intercepting debris and dust. A storage groove is provided inside the collection chamber, and the notch of the storage groove is located on the outer side of the collection chamber. The interception plate is slidably installed in the storage groove. A rotatable limit plate is provided on the outer side of the collection chamber. By rotating the limit plate, it can block the interception plate to prevent the interception plate from detaching from the collection chamber.

8. The material lifting device according to claim 2, characterized in that: It also includes a base, and the support plate is vertically fixed on the base; the top end of the screw rod is coaxially connected to the second gear, and the bottom end of the screw rod is rotatably connected to the base.

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