Belt Driven Multi-Disc Trimming Grinding Machine

Abstract

The present invention belongs to the field of decoration and renovation construction equipment, and proposes a belt-driven multi-disc trimming and grinding machine, including a machine base, on which an electric control box, a driving source, a hand-held mechanism, a walking mechanism and a grinding mechanism are arranged, a grinding mechanism transmission box, a transmission assembly and a tensioning assembly, the transmission box includes a top cover, a side enclosure and a bottom cover, the side enclosure is a hollow tetrahedral structure and its side edges are transitioned through rounded corners, the tensioning assembly includes a tensioning arm and a tensioning wheel elastically hinged to the top cover, a knife seat is arranged at the bottom of the corner side azimuth pulley and the side azimuth pulley, the knife seat is located below the bottom cover and a knife disc is arranged at the bottom, a plurality of knife plates distributed along the edge thereof are arranged on the knife disc, a part of the knife plates on the same knife disc are arranged with ground grinding blades, and another part of the knife plates are arranged with grinding blades. The device has a reasonable design, a simple structure, no risk of oil leakage, good buffering performance, strong grinding ability, high grinding quality and high comprehensive utilization rate, and is suitable for large-scale promotion.

Description

Technical Field

[0001] The invention belongs to the field of decoration and renovation construction equipment, and in particular relates to a belt-driven multi-disc trimming and grinding machine. Background Art

[0002] The grinding machine used in decoration construction is mainly used to polish or grind the concrete surface or wall surface to ensure the quality of subsequent decoration. The grinding machine typically includes a frame and a grinding disc with a grinding tool. The frame is provided with a motor, a transmission mechanism for outputting power to the grinding disc, and a walking mechanism in contact with the ground. In addition, a hand-held mechanism for hand-holding and pushing the device along the ground is also provided on the rear side of the frame.

[0003] At present, most of the cutter discs of the grinders are distributed in a circumferential direction, and the grinding working surface and protective shell formed by them are also circular. In this way, there will be a problem of poor trimming effect during the grinding operation, and finally the staff needs to use a handheld grinder for grinding, so it is not conducive to shortening the construction period. For example, the existing patent CN201780034496.6 discloses a floor grinder for grinding the floor surface of stone or stone-like materials. The machine includes a frame, a grinding head supported by the frame, a motor supported by the frame and operably connected to the grinding head, and a handle frame extending from the frame and pivotable relative to the frame. In addition to the above-mentioned problems, the grinding head / grinding cutter disc of the device and some grinders that drive the grinding head by gear meshing transmission lack buffering, so when there is a raised obstacle on the ground, the grinding disc and the transmission shaft are easily damaged, affecting the service life of the equipment; at the same time, the gear meshing transmission mode has the problem that the oil seal is easy to wear and leak oil, which will affect the operating efficiency of the equipment.

[0004] Another example is the existing patent CN201910630607.0, which discloses a belt transmission device for a floor grinder, including a box body and a box cover, the box cover is arranged above the box body, through holes 1 and 2 are provided at the bottom of the box body, a rotating shaft is provided in the through hole 2 and a rotating rod is provided in the through hole 2, one end of the rotating rod and the rotating shaft are connected with a grinding device, a transmission pulley 1 is fixed on the outer jacket of the rotating shaft and a transmission pulley 2 is fixed on the outer jacket of the rotating rod, and a mechanism connected to the output shaft of the motor is provided at the bottom of the box body, and the mechanism drives the transmission pulley 1 and the transmission pulley 2 to rotate through a belt. The grinder can provide a certain buffering performance in the form of belt drive, and improve the stability of the transmission mechanism to a certain extent. However, the device also has the problem of poor grinding and trimming effect, and lacks a tensioning structure for real-time adjustment after the belt drive, so its buffering performance is greatly reduced; in addition, the actual grinding working surface of the grinding device (knife disc) of the device is single, and its overall grinding performance needs to be improved. Summary of the invention

[0005] In view of the technical problems existing in the above-mentioned grinders, the present invention proposes a belt-driven multi-disc trimming grinder with reasonable design, no oil leakage risk, good buffering performance, strong grinding ability, high grinding quality and high comprehensive utilization rate.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is that the belt-driven multi-disc trimming and grinding machine provided by the present invention comprises a machine base, an electric control box, a driving source and a hand-held mechanism are arranged on the machine base, a walking mechanism is arranged on the rear side of the machine base, a grinding mechanism is arranged below the machine base, the grinding mechanism comprises a transmission box connected to the machine base, the transmission box comprises a top cover, a side enclosure and a bottom cover, the side enclosure is a hollow quadrangular prism structure and its side edges are transitioned through rounded corners, a transmission assembly is arranged inside the machine base and the transmission box, the transmission assembly comprises a primary transmission pulley group arranged in the machine base and a secondary transmission pulley group arranged in the transmission box and connected to the primary transmission pulley group, the primary transmission pulley group is transmission-connected to the driving source and comprises a driving pulley, a driven pulley and a first belt, the secondary transmission The driven pulley group includes four angular pulleys distributed near the side edges of the transmission box, and a side pulley distributed near the center of the transmission box is arranged between the side pulleys. The side pulleys and the angular pulleys are connected by a second belt transmission and the transmission track of the second belt includes a plurality of M-shaped segments. A tensioning assembly is also arranged on the transmission side of the second belt, and the tensioning assembly includes a tensioning arm elastically hinged to the top cover, and a tensioning wheel is arranged at one end of the tensioning arm. A knife seat is arranged at the bottom of the angular side pulleys and the side pulleys, and the knife seat is located below the bottom cover and a knife disc is arranged at the bottom thereof, and a plurality of mounting grooves distributed along the edge thereof are arranged on the knife disc, and a knife plate is arranged in the mounting groove, and a ground grinding blade is arranged on a part of the knife plates on the same knife disc, and a grinding blade is arranged on another part of the knife plates.

[0007] Preferably, the walking mechanism includes an inter-axle beam, a rotating shaft is arranged inside the inter-axle beam, walking wheels are arranged at both ends of the rotating shaft, traction plates are arranged at both ends of the inter-axle beam, and the traction plates are connected to ear plates arranged inside the machine base through pairs of positioning bolts.

[0008] Preferably, a limited height shaft is arranged at the tail of the traveling mechanism, limited height wheels are arranged at both ends of the limited height shaft, and the lowest wheel surface of the limited height wheel is higher than the lowest wheel surface of the traveling wheel.

[0009] Preferably, the handhold mechanism is arranged at the top of the inter-axle beam, and the handhold mechanism includes a fixed hinge support, a support beam is obliquely arranged on the fixed hinge support, dividing plates are arranged on both sides of the top of the support beam, a box-type arm is arranged between the dividing plates, the box-type arm is connected to the dividing plates by dividing pins, a control panel electrically connected to the electric control box is arranged on the box-type arm, and a handhold rod horizontally passing through the box-type arm is arranged at the top of the box-type arm.

[0010] Preferably, the indexing pin comprises a pin shaft passing through two indexing plates, the pin shaft is provided with a pin hole, a pin rod is provided in the pin hole, a plug is provided at one end of the pin rod, and bullhead springs plugged with the other end of the pin rod are provided at both ends of the plug.

[0011] Preferably, the ground grinding blade is a diamond-shaped structure, and the grinding blade is a cam structure with its wheel surface facing the outside of the transmission box.

[0012] Preferably, a plurality of support tubes and through-plate bolts for supporting the top cover and the bottom cover are arranged inside the transmission box, and the through-plate bolts are used to connect the top cover and the bottom cover.

[0013] Preferably, the bottom cover is provided with through holes for penetrating the corner side pulley and the side pulley.

[0014] Preferably, a pair of handles are provided on the top cover, and the handles are distributed away from the hand-holding mechanism.

[0015] Preferably, the shaft ends of the corner azimuth pulley and the lateral azimuth pulley are both provided with bearings.

[0016] Compared with the prior art, the advantages and positive effects of the present invention are:

[0017] 1. The belt-driven multi-disc trimming and grinding machine provided by the present invention has a transmission box with a rectangular design and the transmission components and grinding working surfaces of the grinding mechanism are distributed along a rectangular track, so that the device can be moved along the ground and can also be attached to a structure perpendicular to the ground, and the ground grinding blade and the grinding blade can simultaneously perform trimming and grinding on the surfaces to be trimmed in two vertical directions, thereby improving the grinding efficiency of the device, and the cooperation of the transmission component and the tensioning component makes the device have a certain buffering performance, which is beneficial to prolonging the service life of the shaft components and tool components in the grinding mechanism.

[0018] 2. The belt-driven multi-disc trimming and grinding machine provided by the present invention uses a belt and a pulley to drive the drive source to the tool holder, which effectively reduces the oil seal. In addition, the relatively sealed design of the transmission box reduces the risk of oil leakage and will not affect the grinding work.

[0019] The device has reasonable design, simple structure, no oil leakage risk, good buffering performance, strong grinding ability, high grinding quality and high comprehensive utilization rate, and is suitable for large-scale promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 An axonometric view of a belt-driven multi-disc trimming and grinding machine provided in an embodiment;

[0022] Figure 2 A front view of a belt-driven multi-disc trimming and grinding machine provided in an embodiment;

[0023] Figure 3 An internal axonometric view of a grinding mechanism provided for an embodiment;

[0024] Figure 4 A top view of the internal structure of the grinding mechanism provided in the embodiment;

[0025] Figure 5 A bottom view of the grinding mechanism provided in the embodiment;

[0026] Figure 6 for Figure 1 A magnified schematic diagram of the structure in the middle;

[0027] In the above figures, 1, machine base; 2, electric control box; 3, driving source; 4, hand-held mechanism; 41, fixed hinge support; 42, support beam; 43, indexing plate; 44, box-type arm; 45, indexing pin; 451, pin shaft; 452 pin rod; 453, plug; 454, bullhead spring; 46, control panel; 47, hand-held rod; 5, walking mechanism; 51, inter-axle beam; 52, walking wheel; 53, traction plate; 54, positioning bolt; 6, grinding mechanism; 61, transmission box; 61a, top cover; 61b, side wall; 61c, bottom cover; 62, transmission Drive assembly; 621, primary drive pulley assembly; 621a, active pulley; 621b, driven pulley; 621c, first belt; 622, secondary drive pulley assembly; 622a, angular pulley; 622b, lateral pulley; 622c, second belt drive; 63, tensioning assembly; 631, tensioning arm; 632, tensioning wheel; 64, knife seat; 65, knife disc; 66, knife plate; 67, ground grinding blade; 68, grinding blade; 69, support tube; 610, through-plate bolt; 611, handle; 7, ear plate; 8, height limiting wheel. DETAILED DESCRIPTION

[0028] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear below, they only indicate that the upper, lower, left and right directions are consistent with the accompanying drawings themselves, and do not limit the structure.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0030] Examples, such as Figures 1 to 6As shown, the belt-driven multi-disc trimming and grinding machine provided by the present invention comprises a machine base 1, on which an electric control box 2, a driving source 3 and a hand-held mechanism 4 are arranged, a walking mechanism 5 is arranged at the rear side of the machine base 1, and a grinding mechanism 6 is arranged below the machine base 1. Among them, the electric control box 2 and the driving source 3 are prior arts, and are not described in detail in this embodiment. On this basis, the grinding mechanism 6 provided by the present invention includes a transmission box 61 connected to the machine base 1, the transmission box 61 includes a top cover 61a, a side wall 61b and a bottom cover 61c, the side wall 61b is a hollow quadrangular structure and its side edges are transitioned through rounded corners, and a transmission component 62 is arranged inside the machine base 1 and the transmission box 61, the transmission component 62 includes a primary transmission pulley group 621 arranged in the machine base 1 and a secondary transmission pulley group 622 arranged in the transmission box 61 and connected to the primary transmission pulley group 621, the primary transmission pulley group 621 is transmission-connected to the driving source 3 and includes a driving pulley 621a, a driven pulley 621b and a first belt 621c, the secondary transmission pulley group 622 includes 4 angular pulleys 622a distributed near the side edges of the transmission box 61, and a belt near the center of the transmission box 61 is arranged between the side pulleys 622b. The side pulleys 622b are distributed, the side pulleys 622b and the corner pulleys 622a are connected by a second belt 622c, and the transmission track of the second belt 622c includes a plurality of M-shaped segments. A tensioning assembly 63 is also provided on the transmission side of the second belt 622c. The tensioning assembly 63 includes a tensioning arm 631 elastically hinged to the top cover 61a, and a tensioning wheel 632 is provided at one end of the tensioning arm 631. A knife seat 64 is provided at the bottom of the corner side pulley 622b and the side pulley 622b. The knife seat 64 is located below the bottom cover 61c and a knife disc 65 is provided at its bottom. The knife disc 65 is provided with a plurality of mounting grooves distributed along its edge, and a knife plate 66 is provided in the mounting groove. A ground grinding blade 67 is provided on a part of the knife plates 66 on the same knife disc 65, and a grinding blade 68 is provided on another part of the knife plates 66. The angular pulley 622a and the lateral pulley 622b have a certain misalignment, so that the second belt 622c can be connected in a plurality of M-shaped segments to frictionally transmit all the pulleys in the secondary transmission pulley set 622.

[0031] Specifically, the transmission box 61 in the device adopts a rectangular design, so that the device can also be attached to the structure perpendicular to the ground during the movement along the ground; matching the transmission box 61, the distribution tracks of the angular azimuth pulley 622a and the lateral azimuth pulley 622b in the secondary transmission pulley group 622 are basically along the circumference direction of the side circumference 61b; the secondary transmission pulley group 622 serves as the power input component of the knife seat 64. When each angular azimuth pulley 622a and the lateral azimuth pulley 622b drive the corresponding knife seat 64 to rotate, the knife disc 65, the knife plate 66, the ground grinding blade 67 and the grinding blade 68 rotate synchronously. In this way, during the movement of the device, the grinding mechanism 6 can simultaneously perform the trimming and grinding work on the two vertical directions of the surface to be ground, so the grinding efficiency of the device is relatively high.

[0032] Furthermore, the present device adopts the cooperation of the transmission component 62 and the tensioning component 63, so that the shaft-like components in the grinding mechanism 6 can be swung around their hinge center and reset by the tensioning arm of the tensioning component 63 when they are hit, that is, a buffer of appropriate amplitude is made. At the same time, the first belt 621c and the second belt 622c can also give a certain radial runout margin, so that the shaft-like components in the grinding mechanism 6 can be effectively protected; accordingly, the ground grinding blade 67 and the grinding blade 68, as tool-like components for direct grinding, can also be protected to a certain extent, thereby obtaining a longer actual service life. In addition, the transmission from the driving source 3 to the knife seat 64 is completed by the belt and pulley method, which effectively reduces the oil seal of the tooth meshing. In addition, the relatively sealed design of the transmission box 61 reduces the risk of oil leakage and will not cause a significant impact on the grinding work.

[0033] In order to improve the comprehensive utilization rate of the device, the walking mechanism 5 and the grinding mechanism 6 provided by the device adopt a tractor-like structure. This design allows the walking mechanism 5 and the grinding mechanism 6 to constitute two main bodies in an assembly relationship. Specifically, the walking mechanism 5 includes an inter-axle beam 51, a rotating shaft is arranged inside the inter-axle beam 51, and walking wheels 52 are arranged at both ends of the rotating shaft. A traction plate 53 is arranged at both ends of the inter-axle beam 51, and the traction plate 53 is connected to the ear plate 7 arranged inside the machine base 1 through a pair of positioning bolts 54. In this way, the walking mechanism 5 establishes a connection relationship with the grinding mechanism 6 through the traction plate 53 and the positioning bolts 54. This relatively clear combination relationship facilitates the assembly and maintenance of the two main bodies separately. At the same time, the grinding mechanism 6 and the machine base 1, as the main body of grinding, can be tilted around the fulcrum of the walking wheel 52 under manual action, thereby bypassing the part on the ground that cannot be repaired.

[0034] In order to improve the safety of the grinding mechanism 6 turning over around the supporting point of the running wheel 52, the present invention sets a limited height shaft at the tail of the running mechanism 5, and sets limited height wheels 8 at both ends of the limited height shaft, and the lowest wheel surface of the limited height wheel 8 is higher than the lowest wheel surface of the running wheel 52. In this way, when the working surface of the grinding mechanism 6 is turned up by manual pressure, the limited height wheel 8 can gradually approach the bottom surface, and the limited height wheel 8 and the running wheel 52 can be grounded at the same time unless necessary, but the whole device will not turn over.

[0035] In order to improve the adjustability of the hand-held mechanism 4, the hand-held mechanism 4 provided by the present invention is arranged on the top of the inter-axial beam 51, and the hand-held mechanism 4 includes a fixed hinge support 41, a support beam 42 is obliquely arranged on the fixed hinge support 41, indexing plates 43 are arranged on both sides of the top of the support beam 42, a box-type arm 44 is arranged between the indexing plates 43, the box-type arm 44 is connected to the indexing plates 43 by indexing pins, a control panel 46 electrically connected to the electric control box 2 is arranged on the box-type arm 44, and a hand-held rod 47 horizontally penetrating the box-type arm 44 is arranged at the top of the box-type arm 44. Among them, the support beam 42 and the box-type arm 44 both have sufficient structural strength, good torsional and bending resistance, and the box-type arm 44 also provides an installation foundation for the control panel 46, and the interior of the box-type arm 44 provides a penetration space for the connection of wires. The box-type arm 44 is connected to the support beam 42 through the indexing plate 43 and the indexing pin, and the indexing pin can be selectively connected to different indexing holes provided on the indexing plate 43, so as to adjust the actual angle of the box-type arm 44 to meet the needs of different users, especially to enable the device to be better folded after work is completed to achieve the purpose of folding.

[0036] In order to improve the connection reliability of the indexing pin, the indexing pin provided by the present invention includes a pin shaft 451 penetrating two indexing plates 43, a pin hole is provided on the pin shaft 451, a pin rod 452 is provided in the pin hole, a plug 453 is provided at one end of the pin rod 452, and a bullhead spring 454 plugged with the other end of the pin rod 452 is provided at both ends of the plug 453. Among them, the pin shaft 451 is inserted into the indexing hole provided on the indexing plate 43, and the indexing plate 43 and the box-type arm 44 are axially connected, and the pin rod 452 plays a role in controlling the axial freedom of the pin shaft 451. At the same time, the bullhead spring 454 inserted into the other end of the pin rod 452 can prevent the pin rod 452 from arbitrarily coming off the pin shaft 451.

[0037] In order to improve the grinding performance of the floor grinding blade 67 and the grinding blade 68, the floor grinding blade 67 provided by the present invention is a diamond structure, and the diamond is sharpened on the side facing the rotation direction of the blade holder 64. After sharpening, the floor grinding blade 67 can fully grind the floor; the grinding blade 68 is a cam structure and its wheel surface faces the outside of the transmission box 61. Its wheel surface can effectively contact vertical objects on the ground, and it can ensure that it has a grinding effect when rotating and has a high grinding safety.

[0038] In order to improve the structural strength of the transmission box 61, the present invention is provided with a plurality of support tubes 69 for supporting the top cover 61a and the bottom cover 61c inside the transmission box 61, and in order to improve the integrity of the transmission box 61, a plurality of through-plate bolts 610 are also provided. The through-plate bolts 610 connect the top cover 61a and the bottom cover 61c from top to bottom to ensure the connection stability between the top cover 61a and the bottom cover 61c.

[0039] In order to improve the relative sealing performance of the transmission box 61, nested surfaces are arranged at the edge of the bottom cover 61c and the edge of the side enclosure 61b. At the same time, the present invention provides through holes on the bottom cover 61c for penetrating the corner side pulley 622b and the side pulley 622b. In addition to the through holes, threaded holes for cooperating with the through-plate bolts are also provided. In addition, other structural holes are not provided unless necessary, thereby further reducing the probability of oil leakage.

[0040] In order to improve the practicality of the grinding mechanism 6, the present invention provides a pair of handles 611 on the top cover 61a, and the handles 611 are distributed away from the hand-held mechanism 4. One of the functions of the handles 611 is to provide a hand-held node for manual operation when the device needs to be lifted and transferred, and another function is that after the two main bodies of the walking mechanism 5 and the grinding mechanism 6 are separated, the handles 611 can be used to facilitate the displacement control of the grinding mechanism 6.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A belt-driven multi-disc trimming and grinding machine, comprising a machine base, on which an electric control box, a driving source and a hand-held mechanism are arranged, a walking mechanism is arranged at the rear side of the machine base, and a grinding mechanism is arranged below the machine base, characterized in that: The grinding mechanism includes a transmission box connected to the machine base, the transmission box includes a top cover, a side enclosure and a bottom cover, the side enclosure is a hollow quadrangular structure and its side edges are transitioned through rounded corners, a transmission assembly is arranged inside the machine base and the transmission box, the transmission assembly includes a primary transmission pulley group arranged in the machine base and a secondary transmission pulley group arranged in the transmission box and connected to the primary transmission pulley group, the primary transmission pulley group is connected to the driving source and includes a driving pulley, a driven pulley and a first belt, the secondary transmission pulley group includes 4 angular azimuth pulleys distributed near the side edges of the transmission box, a lateral azimuth pulley distributed near the center of the transmission box is arranged between the angular azimuth pulleys, the lateral pulleys and the angular azimuth pulleys are connected through a second belt transmission and the transmission track of the second belt includes a plurality of M-shaped segments, and the transmission side of the second belt is also provided with The cam is provided with a toothed structure and a plurality of toothed structures are provided on the toothed structure to prevent the toothed structure from being damaged and the toothed structures from being distorted.

2. The belt-driven multi-disc trimming and grinding machine according to claim 1, characterized in that: A limited height shaft is arranged at the tail of the walking mechanism, and limited height wheels are arranged at both ends of the limited height shaft, and the lowest wheel surface of the limited height wheel is higher than the lowest wheel surface of the walking wheel.

3. The belt-driven multi-disc trimming and grinding machine according to claim 2, characterized in that: The hand-holding mechanism is arranged on the top of the inter-axle beam, and the hand-holding mechanism includes a fixed hinge support, a support beam is obliquely arranged on the fixed hinge support, dividing plates are arranged on both sides of the top of the support beam, a box-type arm is arranged between the dividing plates, the box-type arm is connected to the dividing plates by dividing pins, a control panel electrically connected to the electric control box is arranged on the box-type arm, and a hand-holding rod horizontally passing through the box-type arm is arranged on the top of the box-type arm.

4. The belt-driven multi-disc trimming and grinding machine according to claim 3, characterized in that: The indexing pin includes a pin shaft penetrating two indexing plates, the pin shaft is provided with a pin hole, a pin rod is provided in the pin hole, a plug is provided at one end of the pin rod, and bullhead springs plugged with the other end of the pin rod are provided at both ends of the plug.

5. The belt-driven multi-disc trimming and grinding machine according to claim 1, characterized in that: A plurality of support tubes and through-plate bolts for supporting the top cover and the bottom cover are arranged inside the transmission box, and the through-plate bolts are used to connect the top cover and the bottom cover.

6. The belt-driven multi-disc trimming and grinding machine according to claim 5, characterized in that: The bottom cover is provided with through holes for penetrating the corner side pulley and the side pulley.

7. The belt-driven multi-disc trimming and grinding machine according to claim 1, characterized in that: A pair of handles are provided on the top cover, and the handles are distributed away from the hand-holding mechanism.

8. The belt-driven multi-disc trimming and grinding machine according to claim 1, characterized in that: The shaft ends of the corner azimuth pulley and the lateral azimuth pulley are both provided with bearings.

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