Grinding disc lifting device and floor grinding equipment

Abstract

The utility model discloses a millstone lifting device and floor grinding equipment, and the millstone lifting device comprises a lifting frame, a hoisting mechanism and a pulley transmission assembly; the first end of the lifting frame is rotationally connected with the equipment rack, and the second end of the lifting frame is provided with a grinding disc assembly. The hoisting mechanism is arranged on the equipment rack and is arranged close to the first end of the hoisting frame; the hoisting mechanism is further in driving connection with the second end of the lifting frame through a pulley transmission assembly so that the second end of the lifting frame can be driven to do circular motion relative to the equipment rack, and then the grinding disc assembly can be driven to do overturning type lifting motion. According to the technical scheme, the technical problems that due to the fact that the stroke of an electric cylinder is limited, the lifting force is difficult to completely release on the ground with poor flatness, and the grinding effect is affected in the lifting mode of a grinding disc assembly of existing floor grinding equipment can be effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of floor grinding, and in particular to a grinding disc lifting device and floor grinding equipment. Background Art

[0002] Floor grinding equipment is an automated equipment used for grinding or polishing concrete floors. It is mainly used to remove the slurry on the concrete surface (after the concrete is completely dry) so that subsequent floor surface construction work can be carried out. Existing floor grinding equipment generally uses an electric cylinder to lift the grinding disc assembly so that the grinding disc assembly can be raised when the grinding disc assembly is not needed for floor grinding. However, in actual use, it was found that this method of lifting the grinding disc assembly will make it difficult to completely release the lifting force on the ground with poor flatness due to the limited stroke of the electric cylinder, which will cause the pressure of the grinding disc assembly on the ground to decrease, affecting its grinding effect. Summary of the invention

[0003] The embodiments of the present application provide a grinding wheel lifting device and a floor grinding equipment, aiming to solve the technical problem that the grinding wheel assembly lifting method of the existing floor grinding equipment is difficult to fully release the lifting force on the ground with poor flatness due to the limited stroke of the electric cylinder, thereby affecting its grinding effect.

[0004] To this end, an embodiment of the present application provides a grinding disc lifting device, which is applied to a floor grinding device, wherein the floor grinding device includes an equipment frame and a grinding disc assembly, and the grinding disc lifting device includes a lifting frame, a winch mechanism, and a pulley transmission assembly;

[0005] The first end of the lifting frame is rotatably connected to the equipment frame, and the grinding disc assembly is installed at the second end of the lifting frame;

[0006] The hoisting mechanism is installed on the equipment frame and is arranged adjacent to the first end of the lifting frame;

[0007] The hoisting mechanism is also drivingly connected to the second end of the lifting frame through the pulley transmission assembly, so as to drive the second end of the lifting frame to perform circular motion relative to the equipment frame, thereby driving the grinding disc assembly to perform a flipping lifting motion.

[0008] Optionally, in some embodiments of the application, the hoisting mechanism includes a power drum and a reduction motor, the power drum is rotatably mounted on the equipment frame, and one end of the power drum is transmission-connected to the output shaft of the reduction motor so as to rotate under the drive of the reduction motor.

[0009] Optionally, in some embodiments of the application, the hoisting mechanism further includes two drum mounting seats, the two drum mounting seats are arranged at intervals on the equipment frame, the power drum is located between the two drum mounting seats, and both ends of the power drum are respectively rotatably connected to one of the drum mounting seats.

[0010] Optionally, in some embodiments of the application, the pulley transmission assembly includes a fixed pulley group, a movable pulley group and a transmission rope, the fixed pulley group is installed on the equipment frame and is located directly above the power drum, the movable pulley group is installed at the second end of the lifting frame, and the transmission rope is led out from the power drum and then reciprocatedly wound between the fixed pulley group and the movable pulley group.

[0011] Optionally, in some embodiments of the application, the fixed pulley group includes N fixed pulleys located on the same rotating axis, and the movable pulley group includes N movable pulleys located on the same rotating axis. After the transmission rope is led out from the power drum, it is alternately wound around the N fixed pulleys and the N movable pulleys to achieve the reciprocating winding, and N is a positive integer greater than 1.

[0012] Optionally, in some embodiments of the application, the grinding wheel lifting device also includes a rotating shaft, both ends of which are fixed on the equipment frame, and the first end of the lifting frame is rotatably mounted on the rotating shaft to achieve a rotating connection between the first end of the lifting frame and the equipment frame.

[0013] Optionally, in some embodiments of the application, the grinding disc lifting device also includes a stopper, and the second end of the lifting frame is rotatably connected to the grinding disc assembly via a pin shaft, and the stopper is also protrudingly provided on the side of the second end of the lifting frame facing the grinding disc assembly to abut against the grinding disc assembly when the grinding disc assembly is raised.

[0014] Optionally, in some embodiments of the application, the grinding disc lifting device further includes an upper end in-place sensor and a lower end in-place sensor, wherein:

[0015] The upper end in place sensor is used to detect whether the grinding disc assembly is lifted into place;

[0016] The lower end in place sensor is used to detect whether the grinding disc assembly has been lowered into place.

[0017] Optionally, in some embodiments of the application, the upper end arrival sensor is any one of a pressure sensor, a travel switch, a proximity switch and a photoelectric switch; the lower end arrival sensor is any one of a pressure sensor, a travel switch, a proximity switch and a photoelectric switch.

[0018] In addition, an embodiment of the present application also provides a floor grinding equipment, which includes an equipment frame, a controller, a grinding disc assembly, a motion mechanism and the above-mentioned grinding disc lifting device. The grinding disc assembly is movably mounted on the equipment frame through the grinding disc lifting device, and the motion mechanism is mounted on the equipment frame to realize the free movement of the equipment frame in the work site. The controller is mounted on the frame and is electrically connected to the grinding disc assembly, the motion mechanism and the grinding disc lifting device respectively.

[0019] The technical solution provided by the present application, its grinding disc lifting device includes a lifting frame, a hoisting mechanism and a pulley transmission assembly. Among them, the first end of the lifting frame is rotatably connected to the equipment frame, and the second end of the lifting frame is equipped with a grinding disc assembly. The hoisting mechanism is installed on the equipment frame and is arranged adjacent to the first end of the lifting frame. The hoisting mechanism is also drivingly connected to the second end of the lifting frame through the pulley transmission assembly, so as to drive the grinding disc assembly to perform a flip-type lifting and lowering movement by driving the second end of the lifting frame to perform a circular arc motion relative to the equipment frame. In this way, through the above-mentioned structural arrangement, the grinding disc lifting device can realize the flip-type lifting and lowering of the grinding disc assembly through the driving combination of the hoisting mechanism and the pulley transmission assembly, so that the lifting of the grinding disc assembly is not limited by the stroke of the hoisting mechanism. On the ground with poor flatness, the lifting force of the grinding disc assembly can be completely released by adjusting the pulley transmission assembly to ensure that the grinding disc assembly is fully supported by the ground, thereby improving its grinding effect. It can be seen that the present technical solution can effectively solve the technical problem that the lifting method of the grinding disc assembly of the existing floor grinding equipment is difficult to fully release the lifting force on the ground with poor flatness due to the limited stroke of the electric cylinder, thus affecting its grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the floor grinding equipment in the embodiment of the present application.

[0021] Description of Figure Numbers:

[0022] 1. Floor grinding equipment; 100. Grinding disc lifting device; 110. Lifting frame; 120. Hoisting mechanism; 121. Power drum; 122. Speed ​​reduction motor; 123. Drum mounting seat; 130. Pulley transmission assembly; 131. Fixed pulley block; 132. Moving pulley block; 133. Transmission rope; 140. Rotating shaft; 150. Block; 200. Equipment frame; 300. Grinding disc assembly; 400. Moving mechanism. DETAILED DESCRIPTION

[0023] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] In one embodiment, Figure 1 As shown, the embodiment of the present application provides a grinding disc lifting device 100, which includes a lifting frame 110, a hoisting mechanism 120 and a pulley transmission assembly 130. The first end of the lifting frame 110 is rotatably connected to the equipment frame 200, and the second end of the lifting frame 110 is provided with a grinding disc assembly 300. The hoisting mechanism 120 is installed on the equipment frame 200 and is arranged adjacent to the first end of the lifting frame 110. The hoisting mechanism 120 is also drivingly connected to the second end of the lifting frame 110 through the pulley transmission assembly 130, so as to drive the grinding disc assembly 300 to perform a flip-type lifting and lowering motion by driving the second end of the lifting frame 110 to perform an arc motion relative to the equipment frame 200.

[0025] It can be understood that the grinding wheel lifting device 100 of the embodiment of the present application is mainly used in the floor grinding equipment 1. In addition to the grinding wheel lifting device 100, the floor grinding equipment 1 also includes at least an equipment frame 200, a grinding wheel assembly 300, a controller and a motion mechanism 400. The floor grinding equipment 1 can remove the floating slurry on the concrete surface (after the concrete is completely dry) through the grinding wheel assembly 300 to carry out subsequent floor surface construction work. When the grinding wheel assembly 300 is not needed for ground grinding, the grinding wheel lifting device 100 can flip and lift the grinding wheel assembly 300.

[0026] The first end and the second end mentioned above refer to the two ends of the lifting frame 110 in the length direction. The arc motion mentioned above specifically refers to the arc motion with the rotation connection between the first end of the lifting frame 110 and the equipment frame 200 as the center. The flip lifting motion mentioned above means that when the grinding disc assembly 300 is lowered into place, the lower surface of the grinding disc will be basically flush with the ground, and when the grinding disc assembly 300 is lifted into place, the lower surface of the grinding disc will be set at a certain angle to the ground.

[0027] In this way, the grinding wheel lifting device 100 of the embodiment of the present application, through the above-mentioned structural setting, can realize the flipping lifting of the grinding wheel assembly 300 through the driving combination of the winch mechanism 120 and the pulley transmission assembly 130, while making the lifting of the grinding wheel assembly 300 not limited by the stroke of the winch mechanism 120. On the ground with poor flatness, the lifting force of the grinding wheel assembly 300 can be completely released through the adjustment of the pulley transmission assembly 130 to ensure that the grinding wheel assembly 300 is fully supported by the ground, thereby improving its grinding effect.

[0028] In some examples, such as Figure 1 As shown, the hoisting mechanism 120 may specifically include a power drum 121 and a reduction motor 122, the power drum 121 is rotatably mounted on the equipment frame 200, and one end of the power drum 121 is transmission-connected with the output shaft of the reduction motor 122, so as to perform rotational motion under the drive of the reduction motor 122. Here, the transmission connection between one end of the power drum 121 and the output shaft of the reduction motor 122 may specifically be that one end of the power drum 121 is directly fastened to the output shaft of the reduction motor 122, or the output shaft of the reduction motor 122 is transmission-connected with one end of the power drum 121 through the cooperation of transmission components such as gears, belts, and chains. In this way, the power drum 121 can be better driven to perform rotational motion through the above-mentioned structural setting, so as to better realize the winding and releasing of the transmission rope 133 mentioned later through the rotational motion. Furthermore, the hoisting mechanism 120 specifically includes two drum mounting seats 123, the two drum mounting seats 123 are arranged at intervals on the equipment frame 200, the power drum 121 is located between the two drum mounting seats 123, and the two ends of the power drum 121 are respectively rotatably connected to a drum mounting seat 123. In this way, the above-mentioned structural arrangement can better realize the rotation installation of the power drum 121 on the equipment frame 200. Furthermore, the two ends of the power drum 121 are respectively rotatably connected to the corresponding drum mounting seat 123 through a bearing, so as to better ensure the rotation installation of the power drum 121 on the equipment frame 200.

[0029] In some examples, such as Figure 1As shown, the pulley transmission assembly 130 may specifically include a fixed pulley block 131, a movable pulley block 132 and a transmission rope 133. The fixed pulley block 131 is installed on the equipment frame 200 and is located directly above the power drum 121. The movable pulley block 132 is installed at the second end of the lifting frame 110. After the transmission rope 133 is drawn out from the power drum 121, it is reciprocated between the fixed pulley block 131 and the movable pulley block 132. The transmission rope 133 preferably adopts a steel wire rope. In this way, the winding and releasing of the transmission rope 133 can be achieved by rotating the power drum 121, thereby changing the spacing between the fixed pulley block 131 and the movable pulley block 132, so that the second end of the lifting frame 110 performs an arc motion relative to the equipment frame 200, thereby driving the grinding disc assembly 300 to perform a flip-type lifting motion. When the grinding disc assembly 300 performs a flip-type lifting motion, the transmission rope 133 is not limited by the stroke. On a ground with poor flatness, the tension of the transmission rope 133 can be completely released by releasing the transmission rope 133 to ensure that the grinding disc assembly 300 is completely supported by the ground, thereby improving its grinding effect. Further, the fixed pulley group 131 includes N fixed pulleys located on the same rotating shaft, and the movable pulley group 132 includes N movable pulleys located on the same rotating shaft. After the transmission rope 133 is drawn out from the power drum 121, it is alternately wound around the N fixed pulleys and the N movable pulleys to achieve reciprocating winding, and N is a positive integer greater than 1. That is, when the transmission rope 133 is drawn out from the power drum 121, it first bypasses a fixed pulley, then bypasses a movable pulley, and then bypasses another fixed pulley and another movable pulley in sequence again, and reciprocates in sequence until it is alternately wound around all fixed pulleys and all movable pulleys. In this way, through the above-mentioned structural setting, by reasonably adjusting the number of fixed pulleys and movable pulleys, the stroke of the winch mechanism 120 can be reasonably adjusted, so that the transmission rope 133 can pull the larger grinding wheel assembly 300 with less pulling force, thereby effectively reducing the power output of the winch mechanism 120 to reduce the corresponding power cost.

[0030] In some examples, such as Figure 1As shown, the grinding disc lifting device 100 also includes a rotating shaft 140, both ends of which are fixed on the equipment frame 200, and the first end of the lifting frame 110 is rotatably mounted on the rotating shaft 140 to achieve a rotatable connection between the first end of the lifting frame 110 and the equipment frame 200. Further, the grinding disc lifting device 100 also includes a stopper 150, the second end of the lifting frame 110 is rotatably connected to the grinding disc assembly 300 through a pin, and the second end of the lifting frame 110 is also convexly provided with a stopper 150 on one side facing the grinding disc assembly 300, so as to abut against the grinding disc assembly 300 when the grinding disc assembly 300 is raised. In this way, through the above-mentioned structural arrangement, when the grinding disc assembly 300 is lifted, the grinding disc assembly 300 can be swung slightly to unload the force, and the setting of the stopper 150 can prevent the problem of collision between the grinding disc assembly 300 and the lifting frame 110 due to the swing of the grinding disc assembly 300.

[0031] In some examples, such as Figure 1 As shown, the grinding disc lifting device 100 also includes an upper end in place sensor (not shown) and a lower end in place sensor (not shown), wherein the upper end in place sensor is mainly used to detect whether the grinding disc assembly 300 is lifted in place. The lower end in place sensor is mainly used to detect whether the grinding disc assembly 300 is lowered in place. In this way, when the grinding disc assembly 300 is lifted, the power reel 121 is driven by the reduction motor 122 to rotate and reel in the transmission rope 133, and the transmission rope 133 pulls the second end of the lifting frame 110 to rotate upward around the rotating shaft 140, thereby lifting the grinding disc assembly 300. After the upper end in place sensor senses it, it sends a signal, and it is considered that the grinding disc assembly 300 is lifted in place. When the grinding disc assembly 300 is lowered, the power reel 121 is driven by the reduction motor 122 to rotate and release the transmission rope 133, and the second end of the lifting frame 110 rotates downward around the rotating shaft 140, thereby putting down the grinding disc assembly 300. When the lower end in place sensor senses it, it sends a signal, and it is considered that it has been lowered in place. In particular, the lower end sensor needs to be set at a position where the transmission rope 133 is completely prevented from loosening, and is accurately controlled by the controller. Further, the upper end in-position sensor is any one of a pressure sensor, a travel switch, a proximity switch, and a photoelectric switch; the lower end in-position sensor is any one of a pressure sensor, a travel switch, a proximity switch, and a photoelectric switch.

[0032] In one embodiment, Figure 1As shown, the embodiment of the present application also provides a floor grinding equipment 1, which includes an equipment frame 200, a controller, a grinding disc assembly 300, a moving mechanism 400 and the above-mentioned grinding disc lifting device 100. The grinding disc assembly 300 is movably mounted on the equipment frame 200 through the grinding disc lifting device 100, and the moving mechanism 400 is mounted on the equipment frame 200 to realize the free movement of the equipment frame 200 in the work site. The controller is mounted on the frame and is electrically connected to the grinding disc assembly 300, the moving mechanism 400 and the grinding disc lifting device 100, respectively.

[0033] It is understandable that the above-mentioned motion mechanism 400 may specifically include two driving wheels and a universal wheel, so that under the control of the controller, the equipment frame 200 can be freely moved in the work site through the power drive of the driving wheels and the direction change of the universal wheel. The above-mentioned grinding disc assembly 300 should at least include a grinding disc that is rotatably arranged and a power mechanism that drives the grinding disc to rotate.

[0034] In this way, the floor grinding equipment 1 of the embodiment of the present application has the same technical effect as the above embodiment because it adopts the same grinding disc lifting device 100 as the above embodiment, and it will not be repeated here.

[0035] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A grinding disc lifting device, used in a floor grinding device, wherein the floor grinding device comprises an equipment frame and a grinding disc assembly, characterized in that: The grinding disc lifting device comprises a lifting frame, a hoisting mechanism and a pulley transmission assembly; The first end of the lifting frame is rotatably connected to the equipment frame, and the grinding disc assembly is installed at the second end of the lifting frame; The hoisting mechanism is installed on the equipment frame and is arranged adjacent to the first end of the lifting frame; The hoisting mechanism is also drivingly connected to the second end of the lifting frame through the pulley transmission assembly, so as to drive the second end of the lifting frame to perform circular motion relative to the equipment frame, thereby driving the grinding disc assembly to perform a flipping lifting motion.

2. The grinding disc lifting device according to claim 1, characterized in that: The hoisting mechanism includes a power drum and a reduction motor. The power drum is rotatably mounted on the equipment frame, and one end of the power drum is transmission-connected to the output shaft of the reduction motor so as to rotate under the drive of the reduction motor.

3. The grinding disc lifting device according to claim 2, characterized in that: The hoisting mechanism also includes two drum mounting seats, which are arranged on the equipment frame at intervals, the power drum is located between the two drum mounting seats, and the two ends of the power drum are respectively rotatably connected to one of the drum mounting seats.

4. The grinding disc lifting device according to claim 2, characterized in that: The pulley transmission assembly includes a fixed pulley block, a movable pulley block and a transmission rope. The fixed pulley block is installed on the equipment frame and is located directly above the power drum. The movable pulley block is installed at the second end of the lifting frame. After the transmission rope is led out from the power drum, it is reciprocatedly wound between the fixed pulley block and the movable pulley block.

5. The grinding disc lifting device according to claim 4, characterized in that: The fixed pulley group includes N fixed pulleys located on the same rotating shaft, and the movable pulley group includes N movable pulleys located on the same rotating shaft. After the transmission rope is led out from the power drum, it is alternately wound around the N fixed pulleys and the N movable pulleys to achieve the reciprocating winding, and N is a positive integer greater than 1.

6. The grinding disc lifting device according to claim 1, characterized in that: The grinding disc lifting device also includes a rotating shaft, both ends of which are fixed on the equipment frame, and the first end of the lifting frame is rotatably mounted on the rotating shaft to achieve a rotating connection between the first end of the lifting frame and the equipment frame.

7. The grinding disc lifting device according to claim 1, characterized in that: The grinding disc lifting device also includes a stopper, and the second end of the lifting frame is rotatably connected to the grinding disc assembly through a pin shaft. The stopper is also protrudingly provided on the side of the second end of the lifting frame facing the grinding disc assembly to abut against the grinding disc assembly when the grinding disc assembly is raised.

8. The grinding disc lifting device according to any one of claims 1 to 7, characterized in that: The grinding disc lifting device also includes an upper end in-place sensor and a lower end in-place sensor, wherein: The upper end in place sensor is used to detect whether the grinding disc assembly is lifted into place; The lower end in place sensor is used to detect whether the grinding disc assembly has been lowered into place.

9. The grinding disc lifting device according to claim 8, characterized in that: The upper end in-place sensor is any one of a pressure sensor, a travel switch, a proximity switch and a photoelectric switch; the lower end in-place sensor is any one of a pressure sensor, a travel switch, a proximity switch and a photoelectric switch.

10. A floor grinding device, characterized in that: The floor grinding equipment includes an equipment frame, a controller, a grinding disc assembly, a motion mechanism and a grinding disc lifting device as described in any one of claims 1 to 9, the grinding disc assembly is movably mounted on the equipment frame through the grinding disc lifting device, the motion mechanism is mounted on the equipment frame to realize the free movement of the equipment frame in the work site, the controller is mounted on the frame and is electrically connected to the grinding disc assembly, the motion mechanism and the grinding disc lifting device respectively.

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