CN210196419U - Tractor reverse gear lubricating structure - Google Patents
Tractor reverse gear lubricating structure Download PDFInfo
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- CN210196419U CN210196419U CN201920787013.6U CN201920787013U CN210196419U CN 210196419 U CN210196419 U CN 210196419U CN 201920787013 U CN201920787013 U CN 201920787013U CN 210196419 U CN210196419 U CN 210196419U
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Abstract
The utility model provides a tractor reverse gear lubricating structure, which comprises a reverse driving gear, a reverse idler, an auxiliary transmission driving gear, an auxiliary transmission driven gear, a reverse driven gear and an oil pool; the reverse gear driving gear is meshed with the reverse gear idler gear; the reverse idler gear is meshed with the reverse driven gear; the auxiliary speed change driving gear is meshed with the auxiliary speed change driven gear; partial gear teeth of the auxiliary transmission driven gear and the reverse driven gear are respectively immersed in the oil pool; the auxiliary speed change driven gear lubricates an auxiliary speed change driving gear through oil throwing; the reverse driven gear lubricates a reverse idler gear through oil throwing; the reverse idler gear lubricates a reverse driving gear through oil throwing; by adopting the scheme, the problem that the lubricating structure of the existing tractor cannot meet the lubricating requirement of the gear can be solved, the gear far away from the existing tractor can be directly lubricated, the lubricating structure is reasonable, the lubrication is reliable, and the use of lubrication of a gearbox is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the tractor is lubricated, concretely relates to tractor reverse gear lubricating structure.
Background
At present, with the popularization of agricultural large-scale development, the power of a tractor is gradually increased, the structural strength required by the tractor on a chassis is correspondingly increased by reflecting the power, specifically, the center distance of a gearbox is increased, the gear modulus is increased, and the lubricating requirement of a gear cannot be met by oil throwing lubrication only due to the limitation of the liquid level height of lubricating oil of the gearbox gear and the limitation of a spatial structure; in view of the demands on gearbox gear lubrication, the existing lubrication system structures need to be improved to accommodate the lubrication requirements.
The existing tractor lubrication collects lubricating oil in an oil dripping device above a gear set through an oil stirring gear, has a simple structure, increases the effective lubrication range of a splash lubrication system, and improves the lubrication efficiency; however, due to the limitation of a space structure, the lubricated gears are complex in space distribution under some conditions, and under the condition that the rotating speed of the lubricated gears is increased, oil dripping lubrication cannot effectively enter the meshing surfaces of the gears, so that insufficient lubrication is caused, and the service performance of the tractor is reduced.
Based on the technical problems in the gear lubrication of the tractor, no relevant solution is provided; there is therefore a pressing need to find effective solutions to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the weak point that exists among the above-mentioned technique, provide a tractor reverse gear lubricating structure, aim at solving current tractor lubricating structure and do not have the problem of abundant lubrication.
The utility model provides a tractor reverse gear lubricating structure, which comprises a reverse driving gear, a reverse idler, an auxiliary transmission driving gear, an auxiliary transmission driven gear, a reverse driven gear and an oil pool; the reverse gear driving gear is meshed with the reverse gear idler gear; the reverse idler gear is meshed with the reverse driven gear; the auxiliary speed change driving gear is meshed with the auxiliary speed change driven gear; partial gear teeth of the auxiliary transmission driven gear and the reverse driven gear are respectively immersed in the oil pool; the auxiliary speed change driven gear lubricates an auxiliary speed change driving gear through oil throwing; the reverse driven gear lubricates a reverse idler gear through oil throwing; the reverse idler gear lubricates a reverse driving gear through oil throwing.
Further, the device also comprises a high-pressure oil injection lubricating mechanism; the high-pressure oil injection lubricating mechanism is communicated with the reverse idler and is used for conveying lubricating oil to the reverse idler so as to perform forced lubrication on the reverse idler and the reverse driving gear.
Further, the high-pressure oil injection lubricating mechanism comprises a high-pressure oil pipe, a direction-adjustable high-pressure oil pipe and an idler shaft; the idler shaft is provided with an oil conveying passage along the axial direction; one end of the direction-adjustable high-pressure oil pipe is communicated with the oil transportation channel, and the other end of the direction-adjustable high-pressure oil pipe is communicated with the high-pressure oil pipe; the idler shaft is communicated with the reverse gear idler through an oil conveying passage so as to convey lubricating oil to the reverse gear idler.
Furthermore, one end of the direction-adjustable high-pressure oil pipe is in threaded connection with the oil delivery pipeline through a direction-adjustable right-angle pipe joint; the other end of the direction-adjustable high-pressure oil pipe can be bent and connected with the high-pressure oil pipe; or the other end of the direction-adjustable high-pressure oil pipe is rotatably connected with the high-pressure oil pipe.
Further, the idler shaft is provided with an oil conveying hole along the radial direction; an oil injection hole is arranged on the reverse gear idler wheel; the reverse idler wheel is rotatably arranged on the idler shaft, and the oil filling hole is correspondingly communicated with the oil conveying hole.
Furthermore, the reverse gear idler is sleeved on the idler shaft through a needle bearing, and lubricating oil in the oil conveying passage is injected into the reverse gear idler through the needle bearing; the reverse driven gear lubricates the needle bearing through throwing oil.
Further, the power transmission device also comprises a first power input shaft, a second power input shaft and a power output shaft; the first power input shaft is in transmission connection with the output shaft so as to drive the power output shaft to rotate; the second power input shaft can be in transmission connection with the auxiliary speed change driven gear to drive the auxiliary speed change driven gear to rotate.
Furthermore, a left hanging connection and a right hanging connection are arranged on the power output shaft; when the auxiliary variable-speed driven gear is positioned on the left hanging connection, the power output shaft realizes forward shifting transmission; when the auxiliary transmission driven gear is positioned on the right hitch, the power output shaft realizes the backward gear shifting transmission.
Furthermore, a meshing sleeve is arranged on the first power input shaft; the meshing sleeve is connected to the auxiliary speed change driving gear leftwards (when the meshing sleeve is connected to the auxiliary speed change driving gear, the auxiliary speed change driven gear realizes auxiliary speed change low-gear transmission.
Further, the idler shaft is located at the upper left between the first power input shaft and the power output shaft.
The utility model provides a tractor reverse gear lubricating structure, which can solve the problem that the existing tractor lubricating structure can not meet the lubricating requirement of gears, can directly lubricate the gears far away from each other, and improves the lubricating effect of the tractor; the lubricating structure is reasonable, convenient to implement and reliable in lubrication, and the lubricating use of the gearbox is guaranteed.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a schematic view of the lubricating structure of a reverse gear of a tractor according to the present invention;
FIG. 2 is a sectional view taken along A-A of FIG. 1;
fig. 3 is a sectional view taken along the direction B-B in fig. 1.
In the figure: 1-reverse gear drive gear; 2-reverse gear idler gear; 3-a range gear drive gear; 4-auxiliary speed change driven gear; 5-reverse driven gear; 6-inner wall of the box body; 7-needle roller bearings; 8-an idler shaft; 9-a direction-adjustable right-angle pipe joint; 10-meshing; 11-a first power input shaft; 12-a second power input shaft; 13-a power take-off shaft; 14-an oil sump; 15-high pressure oil pipe; 16-direction-adjustable high-pressure oil pipe.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 3, the utility model provides a tractor reverse gear lubrication structure, which comprises a reverse gear driving gear 1, a reverse gear idler 2, an auxiliary transmission driving gear 3, an auxiliary transmission driven gear 4, a reverse gear driven gear 5 and an oil pool 14; wherein, the reverse gear driving gear 1 is meshed with the reverse gear idler 2, the reverse gear idler 2 is meshed with the reverse gear driven gear 5, the auxiliary transmission driving gear 3 is meshed with the auxiliary transmission driven gear 4, and lubricating oil is arranged in the oil pool 14; partial gear teeth of the auxiliary transmission driven gear 4 and the reverse gear driven gear 5 are respectively immersed in the oil pool 14, so that the auxiliary transmission driven gear 4 can absorb lubricating oil in the oil pool 14 and lubricate the auxiliary transmission driving gear 3 through oil throwing, the reverse gear driven gear 5 can absorb lubricating oil in the oil pool 14 and lubricate the reverse gear idler gear 2 through oil throwing, and the reverse gear idler gear 2 can also lubricate the reverse gear driving gear 1 through oil throwing; by adopting the scheme, the arrangement of the lubricating space structure of the current tractor can be adapted, the effect of sufficient lubrication is achieved, and the rotating speed can be effectively increased.
Preferably, in combination with the above solution, as shown in fig. 1 to 3, in the present embodiment, the tractor reverse gear lubricating structure further includes a high-pressure oil injection lubricating mechanism; specifically, the high-pressure oil-injection lubricating mechanism is communicated with the reverse idler gear 2 and is used for conveying lubricating oil to the reverse idler gear 2, so that the reverse idler gear 2 and the reverse driving gear 1 are forcibly lubricated; specifically, because the space between the reverse idler gear 2 and the inner wall 6 of the box body is small, the distance between the reverse driving gear 1 and the liquid level a of lubricating oil is higher, the oil throwing lubrication is difficult, namely the lubrication is difficult, so that the problem of difficult lubrication of the reverse gear can be effectively solved by combining the oil throwing structure and the forced lubrication structure.
Preferably, in combination with the above solutions, as shown in fig. 1 to 3, in the present embodiment, the high-pressure oil injection lubrication mechanism specifically includes a high-pressure oil pipe 15, a direction-adjustable high-pressure oil pipe 16, and an idler shaft 8; the idler shaft 8 is provided with an oil delivery passage along the axial direction, and the oil delivery passage is used for delivering lubricating oil which can flow into the high-pressure oil pipe 16 in an adjustable way; one end of the direction-adjustable high-pressure oil pipe 16 is communicated with the oil delivery passage, the other end of the direction-adjustable high-pressure oil pipe 16 is communicated with the high-pressure oil pipe 15, lubricating oil in the high-pressure oil pipe 15 can be delivered, and the idler shaft 8 is communicated with the reverse idler 2 through the oil delivery passage, so that the lubricating oil is delivered to the reverse idler 2 for high-pressure lubrication; furthermore, the reverse idle gear 2 is sleeved on an idle gear shaft 8 through a needle bearing, and lubricating oil in the oil conveying passage is injected into the reverse idle gear 2 through a needle bearing 7; by adopting the design, the high-pressure oil pipe 15 injects lubricating oil into an oil delivery passage of the idler shaft 8 through the direction-adjustable high-pressure oil pipe 16, and simultaneously lubricates the needle roller bearing 7; likewise, the reverse driven gear 5 also lubricates the needle bearing 7 by throwing oil.
Preferably, with the above solutions, as shown in fig. 1 to 3, in this embodiment, one end of the direction-adjustable high-pressure oil pipe 16 is in threaded connection with the oil delivery channel of the idler shaft 8 through a direction-adjustable right-angle pipe joint, and the other end of the direction-adjustable high-pressure oil pipe 16 can be connected with the high-pressure oil pipe 15 in a bending manner, so that due to the increase of the center distance and the gear module of the transmission, the limitation of the liquid level height and the limitation of the spatial structure of the gear lubricating oil of the transmission can be facilitated, and the spatial arrangement and installation; similarly, the other end of the direction-adjustable high-pressure oil pipe 16 can be rotatably connected with the high-pressure oil pipe 15, the rotatable connection is adopted, the existing problems that the center distance of the gearbox is increased, the gear module is increased, the liquid level height of gear lubricating oil of the gearbox is limited and the space structure is limited are also considered, and the space arrangement and installation of the oil pipes can be facilitated.
Preferably, in combination with the above solution, as shown in fig. 1 to 3, in the present embodiment, the idler shaft 8 is provided with an oil delivery hole in the radial direction; an oil filling hole is formed in the reverse idler wheel 2, specifically, four oil filling holes are formed in the radial direction, and after assembly, the radial oil filling hole is opposite to an oil conveying hole of the idler wheel 2; the reverse idler gear 2 is sleeved on an idler shaft 8 through a needle bearing; furthermore, the reverse idler gear 2 can be rotatably arranged on the idler shaft 8, and the oil filling hole is correspondingly communicated with the oil conveying hole; according to the high-pressure oil injection lubricating mechanism, hydraulic oil with certain pressure enters an axial oil conveying channel of an idler shaft 8 to a radial oil conveying hole through a direction-adjustable high-pressure oil pipe 6 and a direction-adjustable right-angle pipe joint 9 to lubricate a needle bearing 7, a reverse idler gear 2 and a reverse driving gear 1.
Specifically, as shown in fig. 1 to 3, in the high-pressure oil injection lubrication mechanism: idler shaft 8 left end is equipped with easy to assemble's adjustable right angle coupling 9, and adjustable right angle coupling 9 one end and idler shaft 8 threaded connection, the other end is connected with adjustable high pressure fuel pipe 6: the direction-adjustable high-pressure oil pipe 6, the direction-adjustable right-angle pipe joint 9 connected with the direction-adjustable high-pressure oil pipe and the oil inlet pipe can be bent and rotated in an angle, the oil pipes are convenient to spatially arrange and install, the high-pressure oil enters the axial oil conveying passage of the idler shaft 8, the idler shaft 8 is radially provided with oil conveying holes, one group of the oil conveying holes comprises two to four oil holes, preferably four oil holes, the four oil holes respectively correspond to the axial installation positions of the oil holes of the reverse idler 2, and the high-pressure lubricating oil passes through the axial oil conveying passage of the idler shaft 8, the radial oil holes of the idler shaft 8, the needle roller bearing 7, the oil holes of the reverse idler 2, the meshing surface of the reverse idler; by adopting the scheme, the lubricating requirements of the reverse driving gear 1, the reverse idler gear 2, the auxiliary transmission driven gear 4, the reverse driven gear 5 and the needle bearing 7 are met by controlling the oil throwing lubrication and the forced lubrication together, the lubrication is reliable, and the use of the lubrication of the gearbox is ensured; can adjust to high-pressure fuel pipe 6 and advance oil pipe, can adjust to right angle coupling 9 and constitute high-pressure lubrication's oil circuit pipeline, in the gearbox and under the complicated condition of gearbox surface spatial structure, can realize the space and bend, the installation of being convenient for has provided structural support for the realization of force-feed lubrication function.
Adopt above-mentioned scheme, can solve current tractor because the increase of gearbox centre-to-centre spacing, the gear modulus increases, restriction and the spatial structure restriction of gearbox gear lubricating oil liquid level height, lead to singly leaning on the lubricated needs that are not enough to satisfy the gear of getting rid of oil lubrication, in view of the requirement to gearbox gear lubrication, optimize current lubricating system structure, overcome the not enough of current structure, use and take the lubricated form that forced lubrication mechanism cooperation gear got rid of oil, to being located far away from lubricating oil liquid level distance, the space size is little, gear that can't effectively lubricate, the lubricated effect of tractor improves.
Preferably, in combination with the above scheme, as shown in fig. 1 to 3, in the present embodiment, the tractor reverse gear lubricating structure further includes a first power input shaft 11, a second power input shaft 12 and a power output shaft 13; specifically, the idler shaft 8 is located at the upper left between the first power input shaft 11 and the power output shaft 13; the first power input shaft 11 is in transmission connection with the output shaft 13 so as to drive the power output shaft 13 to rotate; the second power input shaft 12 can be in transmission connection with the auxiliary transmission driven gear 4 to drive the auxiliary transmission driven gear 4 to rotate; specifically, the auxiliary transmission driven gear 4 and the reverse gear driven gear 5 which are positioned on the power output shaft 13 are both immersed in an oil pool 14, the auxiliary transmission driving gear 3 and the reverse gear idler 2 which are meshed with the auxiliary transmission driven gear are lubricated by throwing oil, and an idler shaft 8, the reverse gear idler 2 and a needle bearing 7 which are positioned above oil in the oil pool 14 are connected with a high-pressure oil pipe 6 through an oil inlet at the left end of the idler shaft 8 for forced lubrication; when only oil slinging is lubricated: because the center distance of the gearbox body is large, the diameter size of the gear is large, and the capability of driving lubricating oil to splash under the action of centrifugal force is weak; in addition, the distance between the reverse idler gear 2 and the reverse driving gear 1 is higher than that of the lubricating oil a, and the gap between the reverse idler gear 2 and the inner wall of the box body caused by structural reasons is small, so that the lubricating effect of the reverse idler gear 2 and the reverse driving gear 1 is poor, the gear tooth surface gluing condition of the gear tooth surfaces of the reverse idler gear 2 and the reverse driving gear 1 caused by insufficient lubrication is more prominent in practical application, and the lubricating effect is obviously improved after forced lubrication is increased.
Preferably, in combination with the above solutions, as shown in fig. 1 to 3, in this embodiment, the power output shaft 13 is provided with a left hitch and a right hitch; when the auxiliary transmission driven gear 4 is positioned on the left hitch, the power output shaft 13 realizes forward shifting transmission; when the auxiliary transmission driven gear 4 is positioned on the right hitch, the power output shaft 13 realizes the backward gear shifting transmission.
Preferably, in combination with the above solutions, as shown in fig. 1 to 3, in the present embodiment, the first power input shaft 11 is provided with an engaging sleeve 10; when the meshing sleeve 10 is left-engaged with the auxiliary transmission driving gear 3, the auxiliary transmission driven gear 4 realizes auxiliary transmission low-gear transmission.
According to the scheme provided by the application, a lubricating system is formed by a reverse gear driving gear, a reverse gear idler gear, an auxiliary speed change driving gear, an auxiliary speed change driven gear, a reverse gear driven gear, an adjustable direction high-pressure oil pipe, a needle bearing, an idler shaft and an adjustable direction right-angle pipe joint; the auxiliary transmission driven gear 4 and the reverse gear driven gear 5 rotate, and lubricating oil respectively lubricates a reverse gear driving gear and a reverse gear idler gear through an oil pool; in addition, high-pressure oil conveyed from the direction-adjustable high-pressure oil pipe can be adjusted to a right-angle pipe joint through the shaft end of the idler shaft, and high-pressure lubricating oil is conveyed to a reverse driving gear and a reverse idler gear of the gear pair through an oil conveying hole and the reverse idler gear on the idler shaft, the high-pressure oil can enter a meshing area of the gear pair forcibly, the reverse driving gear and the reverse idler gear are effectively lubricated, and the lubrication between the gear pair is realized, and meanwhile, the lubrication of a needle bearing between the idler gear and the idler shaft is also met.
The utility model provides a tractor reverse gear lubricating structure, which can solve the problem that the existing tractor lubricating structure can not meet the lubricating requirement of gears, can directly lubricate the gears far away from each other, and improves the lubricating effect of the tractor; the lubricating structure is reasonable, convenient to implement and reliable in lubrication, and the lubricating use of the gearbox is guaranteed.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.
Claims (10)
1. A tractor reverse gear lubrication structure is characterized by comprising a reverse driving gear (1), a reverse idler gear (2), an auxiliary transmission driving gear (3), an auxiliary transmission driven gear (4), a reverse driven gear (5) and an oil pool (14); the reverse gear driving gear (1) is meshed with the reverse gear idler gear (2); the reverse idler gear (2) is meshed with the reverse driven gear (5); the auxiliary transmission driving gear (3) is meshed with the auxiliary transmission driven gear (4); partial gear teeth of the auxiliary transmission driven gear (4) and the reverse driven gear (5) are respectively immersed in the oil pool (14); the auxiliary transmission driven gear (4) lubricates the auxiliary transmission driving gear (3) through oil throwing; the reverse gear driven gear (5) lubricates the reverse gear idler gear (2) through oil throwing; and the reverse idler gear (2) lubricates the reverse driving gear (1) through oil throwing.
2. The tractor reverse gear lubricating structure according to claim 1, further comprising a high-pressure oil-jet lubricating mechanism; the high-pressure oil injection lubricating mechanism is communicated with the reverse gear idler (2) and is used for conveying lubricating oil to the reverse gear idler (2) so as to perform forced lubrication on the reverse gear idler (2) and the reverse gear driving gear (1).
3. The tractor reverse gear lubricating structure according to claim 2, wherein the high-pressure oil injection lubricating mechanism comprises a high-pressure oil pipe (15), an adjustable direction high-pressure oil pipe (16) and an idler shaft (8); the idler shaft (8) is provided with an oil conveying passage along the axial direction; one end of the direction-adjustable high-pressure oil pipe (16) is communicated with the oil conveying channel, and the other end of the direction-adjustable high-pressure oil pipe (16) is communicated with the high-pressure oil pipe (15); the idler shaft (8) is communicated with the reverse gear idler (2) through the oil conveying passage, so that lubricating oil is conveyed to the reverse gear idler (2).
4. The tractor reverse gear lubricating structure according to claim 3, wherein one end of the direction-adjustable high-pressure oil pipe (16) is in threaded connection with the oil delivery passage through a direction-adjustable right-angle pipe joint; the other end of the direction-adjustable high-pressure oil pipe (16) can be bent and connected with the high-pressure oil pipe (15); or the other end of the direction-adjustable high-pressure oil pipe (16) is rotatably connected with the high-pressure oil pipe (15).
5. The tractor reverse gear lubricating structure according to claim 3, wherein the idler shaft (8) is provided with an oil feed hole in the radial direction; an oil filling hole is formed in the reverse gear idler (2); the reverse idler gear (2) is rotatably arranged on the idler shaft (8) and enables the oil filling hole to be correspondingly communicated with the oil conveying hole.
6. The tractor reverse gear lubricating structure according to claim 3, wherein the reverse idler (2) is sleeved on the idler shaft (8) through a needle bearing (7), and lubricating oil in the oil conveying passage is injected into the reverse idler (2) through the needle bearing (7); the reverse driven gear (5) also lubricates the needle roller bearing (7) through oil throwing.
7. The tractor reverse gear lubricating structure according to claim 3, further comprising a first power input shaft (11), a second power input shaft (12), and a power output shaft (13); the first power input shaft (11) is in transmission connection with the output shaft (13) so as to drive the power output shaft (13) to rotate; the second power input shaft (12) can be in transmission connection with the auxiliary transmission driven gear (4) to drive the auxiliary transmission driven gear (4) to operate.
8. The tractor reverse gear lubricating structure according to claim 7, wherein the power output shaft (13) is provided with a left hitch and a right hitch; when the auxiliary transmission driven gear (4) is positioned on the left hitch, the power output shaft (13) realizes forward gear shifting transmission; when the auxiliary transmission driven gear (4) is positioned on the right hitch, the power output shaft (13) realizes backward gear shifting transmission.
9. The tractor reverse gear lubricating structure according to claim 7, wherein the first power input shaft (11) is provided with a meshing sleeve (10); when the meshing sleeve (10) is connected to the auxiliary transmission driving gear (3) leftwards in a hanging mode, the auxiliary transmission driven gear (4) achieves auxiliary transmission low-gear transmission.
10. The tractor reverse gear lubrication structure according to claim 7, wherein the idler shaft (8) is located at the upper left between the first power input shaft (11) and the power output shaft (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920787013.6U CN210196419U (en) | 2019-05-28 | 2019-05-28 | Tractor reverse gear lubricating structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920787013.6U CN210196419U (en) | 2019-05-28 | 2019-05-28 | Tractor reverse gear lubricating structure |
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| CN210196419U true CN210196419U (en) | 2020-03-27 |
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| CN201920787013.6U Active CN210196419U (en) | 2019-05-28 | 2019-05-28 | Tractor reverse gear lubricating structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263706A (en) * | 2022-03-02 | 2022-04-01 | 常州长浪齿轮箱有限公司 | Flat double gear case |
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2019
- 2019-05-28 CN CN201920787013.6U patent/CN210196419U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263706A (en) * | 2022-03-02 | 2022-04-01 | 常州长浪齿轮箱有限公司 | Flat double gear case |
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Address after: 241080 Anhui province Wuhu City mountain Economic Development Zone E Xi Road No. 16 Patentee after: Zhonglian Agricultural Machinery Co., Ltd Address before: 241080 Anhui province Wuhu City mountain Economic Development Zone E Xi Road No. 16 Patentee before: ZOOMLION HEAVY MACHINERY Co.,Ltd. |