CN105196125B - Transmission mechanism for ground grinding machine - Google Patents

Abstract

The invention discloses a transmission mechanism for a ground grinding machine, which comprises a lower transmission box body and an upper transmission box body, wherein a driving gear arranged in the lower transmission box body is engaged and connected with a transition gear, a big planetary gear and an output gear from inside to outside along the circumferential direction, a transmission main shaft is arranged on the upper transmission box body and is rotatably connected with a sun gear, the upper part of each big planetary gear is coaxially and synchronously connected with a small planetary gear which is engaged with the sun gear, the small planetary gear drives the sun gear to rotate, so that the lower transmission box body and the upper transmission box body revolve, the revolution direction is consistent with the input direction of the transmission main shaft and is opposite to the output direction of the output gear, the ground grinding machine adopting the transmission mechanism not only effectively balances the inertial centrifugal force generated during revolution, so that the ground grinding machine adopting the transmission mechanism runs stably during working, but also the revolution directions of the upper transmission box body and the, the cross polishing is realized, the efficient characteristic is achieved, and the working efficiency is improved.

Description

A transmission mechanism for a grinding machine

【Technical field】

The invention relates to a transmission mechanism, in particular to a transmission mechanism for a ground grinder.

【Background technique】

The existing ground grinding machine transmission mechanism generally uses gears for transmission, and uses planetary gears for transmission, and connects the grinding disc assembly through multi-axis output. When the ground grinding machine is working and grinding, the grinding disc assembly rotates to grind the floor. The transmission box And the grinding disc assembly produces revolution under the action of the planetary gear, thus, the transmission box also produces a large inertial force, which affects the stable operation of the ground grinding machine.

In addition, for the ground grinder that uses the gear mechanism for transmission, because the parts in the transmission box cannot be lubricated normally, the gears in this part are prone to fatigue and serious wear, which reduces the service life of the equipment.

The present invention studies and proposes aiming at the deficiencies in the prior art.

【Content of invention】

The technical problem to be solved by the present invention is to provide a transmission mechanism for ground grinding machines, which includes a lower transmission box and an upper transmission box, and the driving gear located in the lower transmission box is connected with a transition gear from the inside to the outside along the circumferential direction. , large planetary gears and output gears, the transmission main shaft is located on the upper transmission box and is connected with a sun gear for rotation, and the upper part of each large planetary gear is coaxially connected with an asteroid gear that meshes with the sun gear, and the asteroid gear drives the sun gear to rotate , so that the lower transmission box and the upper transmission box revolve, and the revolution direction is consistent with the input direction of the transmission main shaft, and is opposite to the output direction of the output gear. The ground grinding machine using this transmission mechanism not only effectively balances the inertia generated during the revolution Centrifugal force makes the ground grinder using this transmission mechanism run smoothly during operation, and the revolution direction of the upper transmission box and the lower transmission box is opposite to the direction of the output gear, which realizes cross-grinding, has the characteristics of high efficiency, and improves work efficiency.

In order to solve the above technical problems, the present invention provides a transmission mechanism for ground grinding machines, comprising a lower transmission case and an upper transmission case arranged on the upper part of the lower transmission case, wherein the lower transmission case and the upper transmission case A transmission main shaft is connected through the rotation, and the lower part of the transmission main shaft is fixedly provided with a driving gear located in the lower transmission box. The lower transmission box is provided with three sets of gears all meshing with the driving gear along the circumference of the driving gear. The group includes a transition gear, a large planetary gear and an output gear in turn from the inside to the outside. The upper part of the transmission main shaft is connected to the sun gear located in the upper transmission box. Each of the large planetary gears is coaxially connected to a Small planetary gears in the body, the small planetary gears mesh with the sun gear, and each output gear is fixedly connected with an output shaft.

The bottom of the upper transmission case is provided with a lubricating through hole communicating with the lower transmission case for allowing lubricating oil to pour into the upper transmission case from the lower transmission case.

The lubricating through hole is located at the bottom of the upper transmission case and is located above the large planetary gear, and the upper part of the large planetary gear is fixed with an oil scraper to push the lubricating oil in the lower transmission case into the upper transmission case through the lubricating through hole body.

The oil scraper includes a horizontally arranged oil scraper connecting portion for fixed connection with the large planetary gear, and a <-shaped oil scraper body is fixed vertically on the oil scraper connecting portion.

The two sides of the oil scraper body are provided with opposite and inwardly bent bending parts.

The upper part of the large planetary gear is symmetrically provided with two scraper plates.

The lubricating through hole is close to the meshing part of the small planetary gear and the sun gear.

The driving gear, transition gear, large planetary gear, output gear, small planetary gear and sun gear are helical gears.

Compared with the prior art, the present invention is a transmission mechanism for ground grinding machines, which has the following advantages:

1. Through the meshing transmission of the asteroid gear and the sun gear, the lower transmission box and the upper transmission box revolve, and effectively balance the inertial centrifugal force generated during the revolution, so that the grinding machine using this transmission mechanism runs smoothly when working .

2. The revolution direction of the lower transmission box and the upper transmission box is consistent with the input direction of the transmission spindle, and opposite to the output direction of the output gear. When the grinding machine adopts this transmission mechanism for grinding, it can be ground crosswise, which has the characteristics of high efficiency. ,Improved work efficiency.

3. There is an oil scraper on the large planetary gear, and the lubricating through hole is located above the large planetary gear. When the large planetary gear rotates, the oil scraper rotates accordingly, which can effectively push the lubricating oil into the upper transmission through the lubricating through hole. The box is used to lubricate the sun gear and the asteroid gear, which overcomes the defect that the upper transmission box is difficult to lubricate, ensures the normal operation of the sun gear and the asteroid gear, and has the characteristics of durability and reliability.

【Description of drawings】

The specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing, wherein:

Fig. 1 is a schematic diagram of the three-dimensional structure of the present invention.

Figure 2 is one of the exploded views of the present invention.

Fig. 3 is the second exploded view of the present invention.

Fig. 4 is a schematic diagram of the connection structure between the large planetary gear and the oil scraper in the present invention.

Fig. 5 is a schematic diagram of the three-dimensional structure of the oil scraper in the present invention.

【detailed description】

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

A transmission mechanism for a ground grinding machine according to the present invention, as shown in Fig. 1, Fig. 2 and Fig. 3, comprises a lower transmission case 71 and an upper transmission case 72 arranged on the upper part of the lower transmission case 71, the lower The transmission case 71 and the upper transmission case 72 are connected with a transmission main shaft 73 for rotation. The transmission main shaft 73 is connected with the lower transmission case 71 and the upper transmission case 72 through bearings. The driving gear 74 in the transmission box body 71, the driving gear 74 rotates synchronously with the transmission main shaft 73, and three groups of gear sets 75 that are all meshed with the driving gear 74 are arranged on the lower transmission box body 71 along the circumference of the driving gear 74. 75 includes a transition gear 751, a large planetary gear 752 and an output gear 753 from the inside to the outside. The upper part of the transmission main shaft 73 is connected to the sun gear 76 in the upper transmission box 72 through a bearing. Each of the large planetary gears 752 is coaxially connected with the asteroid gear 77 located in the upper transmission case 72, and the asteroid gear 77 meshes with the sun gear 76, so that the lower transmission case 71 and the upper transmission case 72 revolve, and are synchronized with the transmission main shaft 73. Each output gear 753 is fixedly connected with an output shaft 78, and the output shaft 78 is used to connect with the grinding disc assembly of the ground grinding machine. The grinding disc assembly is driven by the output gear 753 to rotate itself, and its rotation direction is opposite to the revolution direction. Therefore, the ground grinder using this transmission mechanism not only effectively balances the inertial centrifugal force generated during revolution, but also ensures that the ground grinder using this transmission mechanism runs smoothly when it is working, and because the revolution direction of the grinding disc assembly is opposite to its rotation direction, when working It realizes cross grinding, improves the grinding efficiency, and has the characteristics of high efficiency and time saving.

In order to lubricate the parts in the upper transmission case 72 , the bottom of the upper transmission case 72 is provided with a valve that communicates with the lower transmission case 71 to allow lubricating oil to pour into the upper transmission case 72 from the lower transmission case 71 . The lubricating through hole 79.

The lubricating through hole 79 is located at the bottom of the upper transmission case 72 and is located above the large planetary gear 752. The top of the large planetary gear 752 is fixed with an oil scraper 7521 to push the lubricating oil in the lower transmission case 71 from the lubricating oil. The through hole 79 pours into the upper transmission case 72 . When the large planetary gear 752 rotates, the oil scraper 7521 rotates thereupon, which can effectively promote the lubricating oil in the transmission case 71 to pour into the upper transmission case 72 through the lubrication through hole 79, so as to ensure the protection against the sun gear 752 and the small planetary gear 77. Lubrication overcomes the defect that the components inside the upper transmission case 72 are difficult to lubricate.

As shown in Figure 5, the oil scraper 7521 includes a horizontally arranged oil scraper connecting portion 7522 for fixed connection with the large planetary gear 752, and the oil scraper connecting portion 7522 is vertically fixed with a The <-shaped oil scraper body 7523, in this embodiment, the oil scraper body 7523 has an obtuse angle <-shaped structure, when the oil scraper 7521 pushes the lubricating oil, the lubricating oil surges upward, so that the lubricating oil can flow through the lubrication through hole 79 Into the upper transmission box body 72.

The two sides of the oil scraper body 7523 are provided with bending parts 752 that are bent inwardly. When the oil scraper 7521 pushes the lubricating oil, it further makes the lubricating oil surge upward.

In order to improve the lubrication frequency of the upper transmission case 72, two oil scrapers 7521 are arranged symmetrically on the upper part of the large planetary gear 752 to ensure timely lubrication.

The lubricating through hole 79 is close to the meshing part of the small planetary gear 77 and the sun gear 76, so as to ensure that the lubricating oil poured into the upper transmission case 2 can lubricate the small planetary gear 77 and the meshing part of the sun gear 76 in time, and can play a certain role. Timely cooling effect.

In order to ensure the smooth operation of the transmission mechanism, the driving gear 74, the transition gear 751, the large planetary gear 752, the output gear 753, the small planetary gear 77 and the sun gear 76 are helical gears.

The transmission main shaft 73 of the transmission mechanism of the present invention is right-handed input, then the driving gear 74 and the large planetary gear 752 are all right-handed, the transmission box 71 and the upper transmission box 72 are right-handed, and the output gear 753, the output shaft 78 and The grinding disc assembly connected with the output shaft 78 is left-handed, so the grinding disc assembly's rotation direction is opposite to its revolution direction.

Claims (5)

1. a kind of transmission mechanism for floor grinding machine, it is characterised in that including underdrive casing (71) and located at underdrive casing (71) the upper gear box body (72) on top, through being rotatably connected to biography in the underdrive casing (71) and upper gear box body (72) Dynamic main shaft (73), transmission main shaft (73) bottom is fixed with and the driving gear (74) in underdrive casing (71), On the underdrive casing (71) along driving gear (74) be circumferentially with three groups with driving gear (74) meshed gears group (75), the gear train (75) includes transition gear (751), mafor planet gear (752) and output gear successively from inside to outside (753), transmission main shaft (73) top is rotatably connected to the central gear (76) in upper gear box body (72), Mei Yisuo Mafor planet gear (752) coaxial synchronous is stated to be connected with positioned at upper gear box body (72) interior small planetary gear (77), the asteroid Gear (77) engages with central gear (76), and each output gear (753) is fixedly connected with output shaft (78)；

Upper gear box body (72) bottom be provided with connect with underdrive casing (71) for making lubricating oil by underdrive casing (71) the lubrication through hole (79) poured in upper gear box body (72)；

The lubrication through hole (79) is located at upper gear box body (72) bottom and is located at mafor planet gear (752) top position, described Mafor planet gear (752) top is fixed with oil scraping plate (7521) to promote the lubricating oil in underdrive casing (71) logical by lubricating Hole (79) pours in upper gear box body (72)；

The through hole (79) that lubricates is close to small planetary gear (77) and central gear (76) engagement place.

A kind of 2. transmission mechanism for floor grinding machine according to claim 1, it is characterised in that oil scraping plate (7521) bag It is in the horizontally disposed oil scraping plate connecting portion (7522) for being fixedly connected with mafor planet gear (752) to include, and the oil scraping plate connects Vertically it is fixed with socket part (7522) and is in<The oil scraping plate body (7523) of type.

A kind of 3. transmission mechanism for floor grinding machine according to claim 2, it is characterised in that the oil scraping plate body (7523) both sides are provided with the kink (7524) to bend inwards in opposite directions.

A kind of 4. transmission mechanism for floor grinding machine according to claim 3, it is characterised in that the mafor planet gear (752) Top is arranged with two oil scraping plates (7521).

5. according to a kind of any one of claim 1-4 transmission mechanisms for floor grinding machine, it is characterised in that the driving tooth Take turns (74), transition gear (751), mafor planet gear (752), output gear (753), small planetary gear (77) and central gear (76) it is helical gear.