CN213448603U - Balance box, drive axle and land leveler - Google Patents

Abstract

The utility model provides a balance box, transaxle and leveler. Wherein, the surge tank includes: a box body; the driving piece is arranged along the width direction of the box body and is rotationally connected with the box body, part of the driving piece is positioned in the box body, and the part of the driving piece, which is positioned outside the box body, is used for connecting a transmission mechanism of a drive axle; the two driven parts are respectively positioned on two sides of the driving part and are rotationally connected with the box body, part of each driven part is positioned in the box body and realizes chain transmission with the driving part through a plurality of rows of chains, the part of each driven part, which is positioned outside the box body, and the part of each driven part, which is positioned outside the box body, are respectively positioned on two sides of the box body, and the part of each driven part, which is positioned outside the box body, is used for being connected with a driving wheel. The technical scheme of the utility model, through adopting the multirow chain, improved the bearing capacity of chain to can improve the structure of driving part and follower, with the drive ratio who improves the balance box, be favorable to increase of service life, realize the miniaturization and the lightweight design of transaxle.

Description

Balance box, drive axle and land leveler

Technical Field

The application relates to the technical field of land leveler speed reduction equipment, in particular to a balance box, a drive axle and a land leveler.

Background

Land levelers are one of the common earth moving machines used to shape and level the ground. Because the grader needs to go on low-speed at the work progress, the three-level reduction gear of main reducer, hub reduction gear and balance box need be passed through to the grader usually to drop to the required rotational speed of construction when making drive arrangement's output power transmission to the drive wheel, but the transmission and the decelerator that have led to the grader are comparatively complicated, and transaxle occupation space is big, and weight is heavier, is unfavorable for miniaturization and lightweight design. In the prior art, a chain transmission mode is adopted in a balance box to simplify the internal structure and the connection relation of the balance box, but the existing chain transmission has limited bearing capacity, the transmission ratio of the balance box is generally in the range of 1:1 to 1.5:1, the transmission ratio is not high, the requirement of a grader on high transmission ratio is met under special conditions, the integral simplifying effect on a drive axle is limited, and the miniaturization and lightweight design of the drive axle is still not facilitated.

SUMMERY OF THE UTILITY MODEL

According to an embodiment of the present invention, it is intended to improve at least one of technical problems existing in the prior art or the related art.

To this end, it is an object of embodiments according to the present invention to provide a balancing box.

It is another object according to an embodiment of the present invention to provide a drive axle.

It is a further object of an embodiment according to the present invention to provide a grader.

In order to achieve the above object, according to an embodiment of a first aspect of the present invention, there is provided a balancing box including: a box body; the driving piece is arranged along the width direction of the box body and is rotationally connected with the box body, part of the driving piece is positioned in the box body, and the part of the driving piece, which is positioned outside the box body, is used for connecting a transmission mechanism of a drive axle; the two driven parts are respectively positioned on two sides of the driving part and are rotationally connected with the box body, part of each driven part is positioned in the box body and realizes chain transmission with the driving part through a plurality of rows of chains, the part of each driven part, which is positioned outside the box body, and the part of each driven part, which is positioned outside the box body, are respectively positioned on two sides of the box body, and the part of each driven part, which is positioned outside the box body, is used for being connected with a driving wheel; the driving part drives the driven part to rotate through a plurality of rows of chains, and the rotating speed of the driven part is less than that of the driving part.

According to the utility model discloses the embodiment of first aspect, the surge tank includes box, driving part and follower. The box body is used for supporting the driving part and the driven part, providing space for transmission connection between the driving part and the driven part and playing a role in protection. The driving part is arranged along the width direction of the box body and is rotationally connected with the box body; part of the driving part is positioned in the box body, and the other part of the driving part is positioned outside the box body; the driving part is located outside the box body and used for being connected with a transmission mechanism of the drive axle so as to obtain power through the transmission mechanism, and the driving part is located inside the box body and used for forming chain transmission with the driven part so as to transmit the power to the driven part. The two driven parts are respectively arranged at two sides of the driving part, namely in the length direction of the box body, and the two driven parts are respectively positioned in front of and behind the driving part; the driven piece is connected with the box rotation to provide the support for the driven piece through the box. The driven part is positioned in the box body, and the driven part positioned in the box body and the driving part positioned in the box body realize chain transmission through a plurality of rows of chains; the other part of the driven part is positioned outside the box body and is used for being connected with a driving wheel of the land scraper so as to transmit the power acquired by the driving part to the driving wheel, so that the driving wheel rotates and drives the land scraper to run; the driven part and the driving part are respectively positioned on two sides of the box body along the width direction. The rotating speed of the driven part is lower than that of the driving part, so that when the driving part drives the driven part to rotate through multiple rows of chains, speed reduction is realized, and the rotating speed of the driving wheel meets the running requirement of the land leveler.

The balance box in this scheme, through the chain structure who realizes the chain drive between change driving part and the follower, adopt multirow chain promptly, thereby the bearing capacity of chain has been improved, thereby can improve the structure of driving part and follower, with the drive ratio who improves the balance box, make the balance box can share bigger proportion in the total drive ratio, thereby can simplify other decelerator's in the transaxle structure correspondingly, increase of service life, be favorable to realizing the miniaturization and the lightweight design of transaxle.

It can be understood that the traditional balancing box of the land scraper mostly adopts single-row chain transmission between a driving part and a driven part, the bearing capacity is limited, the upper limit value of the designed transmission ratio of the balancing box is lower, generally in the range of 1:1 to 1.5:1, and if the transmission ratio of the balancing box is increased, the chain is easy to break. The scheme can effectively alleviate the problems and provide conditions for improving the transmission ratio of the balance box.

In addition, according to the utility model discloses in the above-mentioned technical scheme that the embodiment provided surge tank can also have following additional technical characteristics:

in the above technical solution, the driving member includes: the first bearing is arranged on the side wall of one side of the box body; the main transmission shaft is arranged along the width direction of the box body and is rotationally connected with the box body through a first bearing, the main transmission shaft penetrates through the first bearing and extends out of the box body, and the part of the main transmission shaft extending out of the box body is used for being connected with a transmission mechanism of a drive axle; at least one driving chain wheel is arranged in the box body and sleeved on the main transmission shaft, a plurality of rows of chain teeth are arranged on the driving chain wheel, and the plurality of rows of chain teeth are meshed with a plurality of rows of chains so as to realize chain transmission between the driving chain wheel and the driven part.

In this solution, the drive member comprises a first bearing, a main drive shaft and at least one drive sprocket. The side wall of one side of the box body is provided with a shaft hole, and the first bearing is arranged at the shaft hole. The main transmission shaft is arranged along the width direction of the box body and matched with the first bearing to realize the rotary connection with the box body; the part of the main transmission shaft is positioned in the box body, and the part of the main transmission shaft extending out of the box body is used for connecting a transmission mechanism of a drive axle to obtain power. The driving chain wheel is sleeved on the part of the main transmission shaft in the box body, and is provided with a plurality of rows of chain teeth meshed with the plurality of rows of chains, so that chain transmission is formed between the driving part and the driven part, and power is transmitted to the driven part. Wherein, the driving chain wheel can be one or more; the number of the chain teeth in the multiple rows is two, and the chain teeth and the two driven parts form chain transmission respectively; the two groups of multi-row chain teeth can be arranged on the same driving chain wheel, and also can be respectively arranged on different driving chain wheels.

In the technical scheme, the number of the driving chain wheels is two, the two driving chain wheels are arranged at intervals along the axial direction of the main transmission shaft, and each driving chain wheel is provided with a group of multi-row chain teeth.

In the technical scheme, the number of the driving chain wheels is two, so that the structure of a single driving chain wheel is simplified, and the processing is convenient. Two driving sprockets are arranged at intervals along the axial direction of the main transmission shaft, and each driving sprocket is provided with a group of multi-row sprockets, namely the two driving sprockets are mutually independent and respectively transmit power to the two driven parts, so that the load born by the single driving sprocket can be reduced, and the service life can be prolonged.

In the above technical solution, the driving member further includes: the first limiting part is fixedly connected to one end of the main transmission shaft, which is positioned in the box body, and the first limiting part is abutted against the end face of one driving sprocket far away from the first bearing; the two second limiting parts are arranged in the box body and sleeved on the main transmission shaft, one second limiting part is arranged between the two driving sprockets, the other second limiting part is arranged between the first bearing and one driving sprocket close to the first bearing, and the axial displacement of the driving sprocket is limited by the first limiting part and the second limiting part.

In the technical scheme, the driving part further comprises a first limiting part and a second limiting part, and the first limiting part and the second limiting part are used for axially limiting the two driving sprockets. Specifically, the first limiting part is fixedly connected to one end of the main transmission shaft, which is located in the box body, and the first limiting part is arranged to abut against an end face of one driving sprocket far away from the first bearing, so that the driving sprocket is prevented from being separated from the main transmission shaft. The number of the second limiting parts is two, the part of the main transmission shaft, which is located in the box body, is sleeved with the second limiting part, one of the second limiting parts is arranged between the two driving sprockets, the other second limiting part is arranged between the first bearing and one driving sprocket which is close to the first bearing, so that the first limiting part and the two second limiting parts are abutted against the end faces of the driving sprockets, the axial positioning of the two driving sprockets is realized, the two driving sprockets are limited from generating axial displacement, and the driving sprockets are kept stable in the rotating process.

In the above technical solution, the driven member includes: the second bearing is arranged on the side wall of the other side of the box body; the driven shaft is arranged at one side of the main transmission shaft, is arranged along the width direction of the box body, penetrates through the second bearing and extends out of the box body, is rotatably connected with the box body through the second bearing, and the part of the driven shaft extending out of the box body is used for being connected with a driving wheel of the land leveler; the driven chain wheel is sleeved on the part of the driven shaft in the box body, and a plurality of rows of chain teeth meshed with the plurality of rows of chains are arranged on the driven chain wheel; wherein, the diameter of the driven sprocket is larger than that of the driving sprocket.

In this solution, the driven member includes a second bearing, a driven shaft, and a driven sprocket. The side wall of the other side of the box body is provided with a shaft hole, and the second bearing is correspondingly arranged at the shaft hole. The driven shaft is arranged on one side of the main transmission shaft and arranged along the width direction of the box body; the driven shaft is in rotating connection with the box body through the matching of the driven shaft and the second bearing so as to support the second bearing through the box body; the part of the driven shaft is positioned in the box body, and the part of the driven shaft extending out of the box body is used for being connected with a driving wheel of the land leveling machine so as to transmit power to the driving wheel, so that the driving wheel drives the land leveling machine to run and perform land leveling operation. The driven chain wheel is sleeved on the part of the driven shaft in the box body, and the driven chain wheel is provided with a plurality of rows of chain teeth meshed with a plurality of rows of chains so as to realize chain transmission between the driven wheel and the driving wheel. The diameter of the driven chain wheel is larger than that of the driving chain wheel, so that the driving chain wheel transmits power to the driven chain wheel and simultaneously realizes a speed reduction function, and the rotating speed of the driving wheel meets the construction requirements of the land leveler.

It should be noted that the two driven shafts are respectively arranged at two sides of the main transmission shaft, that is, in the length direction of the box body, the two driven shafts are respectively positioned in front of and behind the main transmission shaft so as to be conveniently connected with the front and rear driving wheels of the grader.

In the above technical solution, the transmission ratio between the driving sprocket and the driven sprocket ranges from 2:1 to 2.5: 1.

In the technical scheme, the transmission ratio between the driving chain wheel and the driven chain wheel is set to be 2: 1-2.5: 1, so that the speed reduction effect of the balance box is enhanced, the balance box can share a larger proportion of the total speed reduction ratio, and the service life of other speed reduction devices (such as a main speed reducer and a wheel-side speed reducer) in the drive axle is prolonged. It can be understood that the transmission ratio of the traditional balance box can only reach 1:1 to 1.5:1, and the scheme improves the bearing capacity because the driving chain wheel and the driven chain wheel are driven by the multiple rows of chains, so that the transmission ratio can be designed to be a larger ratio, and the faults of breakage and the like of the multiple rows of chains can not be caused.

In the technical scheme, the plurality of rows of chains are double rows of roller chains; the chain teeth in the rows are double-row chain teeth.

In the technical scheme, the multi-row chain is a double-row roller chain, the multi-row chain teeth are double-row chain teeth, and the double-row chain teeth are meshed with the double-row roller chain to realize transmission, so that the bearing capacity can be improved, the structure of the multi-row chain is simplified as far as possible, the processing difficulty and the processing cost are reduced, the mounting and the connection in a balance box are facilitated, and the occupied space is reduced.

According to the utility model discloses an embodiment of second aspect provides a transaxle for the leveler, include: a drive axle housing; the main speed reducer is arranged in the drive axle housing, and the input end of the main speed reducer extends outwards from one end of the drive axle housing and is used for being connected with a driving mechanism of the land leveler; the two balancing boxes in any embodiment of the first aspect are respectively connected to two sides of the driving axle housing along the width direction of the land leveler, the part of the driving part of the balancing box, which is positioned outside the box body, extends into the driving axle housing and is in transmission connection with the output end of the main speed reducer, and the part of the driven part of the balancing box, which is positioned outside the box body, is used for being connected with a driving wheel of the land leveler.

In this solution, the drive axle comprises a transaxle case, a final drive, and two balancing boxes in the above-described embodiments of the first aspect. The drive axle housing serves as a mounting base for providing mounting space and support for various components inside the drive axle and for protection. In final drive located the transaxle case, final drive's input was outwards stretched out by the one end of transaxle case for connect the actuating mechanism of leveler, in order to acquire power. Two balance boxes are connected respectively in the both sides of transaxle case along the width direction of leveler, and the driving part of balance box is located the part outside the box and stretches into in the transaxle case to be connected with main reducer's output transmission, through main reducer to balance box transmission power, reduce output speed simultaneously.

The transaxle in this scheme passes through main reducer, the two-stage speed reduction of balance box, can realize the transmission of the actuating mechanism's of leveler output power to the drive wheel to reduce the rotational speed of drive wheel to the demand that satisfies the leveler construction and travel, simplified traditional tertiary reduction gears, thereby be favorable to realizing the miniaturization and the lightweight design of transaxle. In addition, the drive axle in this scheme also has all the beneficial effects of the balance box in any one of the embodiments of the first aspect, which are not described herein again.

In the above technical solution, the transaxle further includes: two wheel reduction gears are arranged in the drive axle housing and are respectively arranged on two sides of the main speed reducer along the width direction of the land leveler, the input end of the wheel reduction gear is in transmission connection with the output end of the main speed reducer, and the output end of the wheel reduction gear is in transmission connection with the driving part of the balance box positioned on the same side so as to reduce the rotating speed of the main speed reducer transmitted to the driving part of the balance box.

In the technical scheme, a wheel-side speed reducer is arranged in a driving axle housing to increase a first-stage speed reduction link. Specifically, two wheel reducers are respectively arranged on two sides of the main reducer along the width direction of the land leveler, the input end of each wheel reducer is in transmission connection with the output end of the main reducer, the output end of each wheel reducer is in transmission connection with the driving part of the balancing box located on the same side, so that transmission connection between the main reducer and the driving part of the balancing box is achieved, and output rotating speed is further reduced in the process that the main reducer transmits power to the driving part. It should be noted that although the drive axle in this scheme adopts the three-level speed reduction mode similar to the conventional drive axle, because the drive part and the driven part in the balance box in this scheme adopt multirow chain to realize chain transmission, the bearing capacity is stronger, so that the transmission ratio of the balance box can be greatly improved, under the condition that the total transmission ratio of the drive axle is not changed, the transmission ratios of the main speed reducer and the wheel-side speed reducer can be correspondingly reduced, so as to reduce the loads borne by the main speed reducer and the wheel-side speed reducer, which is beneficial to prolonging the service lives of the main speed reducer and the wheel-side speed reducer, and reducing the maintenance cost.

According to a third aspect of the present invention, there is provided in an embodiment of the present invention a grader, comprising: the land leveler comprises a land leveler body, wherein the middle part of the land leveler body is provided with an operation mechanism, and two sides of the land leveler body are provided with driving wheels; the driving mechanism is arranged in the flat-land locomotive body; the drive axle of the embodiment of the second aspect is arranged at the bottom of the grader body, the input end of a main speed reducer of the drive axle is in transmission connection with the output end of the driving mechanism, two balance boxes of the drive axle are respectively arranged at two sides of the grader body in the width direction, and a driven part of each balance box is in transmission connection with a driving wheel which is positioned at the same side of the grader body so as to transmit power to the driving wheel.

In this embodiment, the grader includes a grader body, a drive mechanism, and the drive axle in the embodiment of the second aspect. The land leveler body is used as a main body mechanism of a land leveler, and driving wheels are arranged on two sides of the land leveler body to drive the land leveler body to run; the middle part of the land leveller body is provided with an operation mechanism to carry out land leveller operation in the running process. The land leveler body is internally provided with a driving mechanism used for providing power for the land leveler body. The drive axle is arranged at the bottom of the land leveller body, and the input end of a main speed reducer of the drive axle is in transmission connection with the output end of the driving mechanism so as to obtain power; two balance boxes of the drive axle are respectively arranged on two sides of the land leveler body along the width direction, a driven part of the balance boxes is in transmission connection with a driving wheel which is positioned on the same side of the land leveler body, so that the driving wheel is rotated by transmitting power from the main speed reducer to the balance boxes to the driving wheel, and the rotating speed of the driving wheel is reduced by the main speed reducer and the balance boxes, so that the rotating speed of the driving wheel meets the driving requirement of the land leveler body. The driving part and the driven part of the balance box are in chain transmission through a plurality of rows of chains, so that the bearing capacity can be improved, and conditions are provided for improving the transmission ratio of the balance box; after the transmission ratio of the balance box is improved, the power transmission and the speed reduction function can be completed only through the two-stage transmission of the main speed reducer and the balance box under the condition that the total transmission ratio of the land leveler is not changed, the three-stage speed reduction mechanism in the traditional drive axle is simplified, and the drive axle is favorable for realizing miniaturization and light weight.

In addition, the motor grader in the present embodiment further has all the beneficial effects of the drive axle in the embodiment of the second aspect, which are not described herein again.

Additional aspects and advantages of the embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of embodiments of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a partial cross-sectional view of a balancing tank according to an embodiment of the invention;

figure 2 shows a partial cross-sectional view of a balancing tank according to an embodiment of the invention;

fig. 3 shows a partial cross-sectional view of a balancing tank according to an embodiment of the invention;

figure 4 shows a partial cross-sectional view of a balancing tank according to an embodiment of the invention;

figure 5 shows a partial cross-sectional view of a balancing tank according to an embodiment of the invention;

fig. 6 shows a partial cross-sectional view of a drive axle according to an embodiment of the present invention;

fig. 7 shows a partial cross-sectional view of a drive axle according to an embodiment of the present invention;

fig. 8 shows a schematic block diagram of a grader according to one embodiment of the present disclosure.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 1 to 8 is as follows:

1 balance box, 11 boxes, 111 axle holes, 12 driving parts, 121 first bearings, 122 main transmission shafts, 123 driving sprockets, 124 first limit parts, 125 second limit parts, 13 driven parts, 131 second bearings, 132 driven shafts, 133 driven sprockets, 14 multi-row chains, 15 multi-row sprockets, 2 drive axles, 21 drive axle housings, 22 main reducers, 221 input ends, 222 output ends, 23 wheel-side reducers, 3 graders, 31 grader body, 311 operating mechanisms, 312 driving wheels and 32 driving mechanisms.

Detailed Description

In order to make the above objects, features and advantages according to the embodiments of the present invention more clearly understood, embodiments according to the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments according to the invention, however, embodiments according to the invention may be practiced in other ways than those described herein, and therefore the scope of protection of this application is not limited by the specific embodiments disclosed below.

A balancing box, a transaxle, and a grader according to some embodiments of the present invention are described below with reference to fig. 1 to 8.

Example one

In the present embodiment, a balancing box 1 is provided, as shown in fig. 1, for a drive axle of a motor grader, and the balancing box 1 includes a box body 11, a driving member 12, and a driven member 13.

The box body 11 serves as a supporting structure of the balance box 1, and is used for supporting the driving part 12 and the driven part 13, providing a space for connection between the driving part 12 and the driven part 13, and protecting the driving part 12 and the driven part 13. The driving part 12 is arranged along the width direction of the box body 11 and is rotationally connected with the box body 11; part of the driving part 12 is positioned in the box body 11, and the other part of the driving part 12 extends outwards from one side of the box body 11; the part of the driving part 12 extending out of the box body 11 is used for connecting a transmission mechanism of a drive axle to obtain power; the portion of the driving member 12 located in the housing 11 forms a chain transmission with the driven member 13 to transmit power to the driven member 13.

The two driven parts 13 are respectively arranged at two sides of the driving part 12, namely in the length direction of the box body 11, and the two driven parts 13 are respectively positioned at the front and the rear of the driving part 12; the driven part 13 is arranged along the width direction of the box body 11 and is rotationally connected with the box body 11 so as to provide support for the driven part 13 through the box body 11; part of the driven member 13 is located within the housing 11 and another part of the driven member 13 extends outwardly from the other side of the housing 11. The driven part 13 in the box 11 is chain-driven by the multi-row chain 14 and the driving part 12 in the box 11, and the driven part 13 extending out of the box 11 is connected with the driving wheel of the grader, so that the power is transmitted to the driving wheel by the chain transmission between the driving part 12 and the driven part 13, the driving wheel rotates, and the grader is driven to run.

In the width direction of the case 11, the portion of the driven member 13 outside the case 11 and the portion of the driving member 12 outside the case 11 are located on both sides of the case 11, respectively. The rotating speed of the driven part 13 is less than that of the driving part 12, so that the balance box 1 has a speed reduction function, and when the driving part 12 transmits power to the driven part 13 through chain transmission, speed reduction is realized, so that the rotating speed of the driving wheel meets the driving requirement of the land leveler.

The balance box 1 in this embodiment changes the chain structure for realizing chain transmission between the driving part 12 and the driven part 13, and by adopting the multiple rows of chains 14, the bearing capacity of the chains is improved, so that the balance box 1 can further improve the transmission ratio by improving the structure, and the balance box 1 can share a larger proportion in the total transmission ratio of the drive axle, so that the structures of other speed reducers (such as a main speed reducer and a wheel-side speed reducer) in the drive axle can be correspondingly simplified, the service life is prolonged, and the miniaturization and lightweight design of the drive axle is facilitated.

Example two

The embodiment provides a balance box 1, and is further improved on the basis of the first embodiment.

As shown in fig. 2, the driving member 12 includes a first bearing 121, a main drive shaft 122, and at least one driving sprocket 123. A shaft hole 111 is formed in a side wall of the case 11, and a first bearing 121 is provided in the shaft hole 111. The main transmission shaft 122 is arranged along the width direction of the box body 11, passes through the first bearing 121 and extends out of the box body 11; the main drive shaft 122 cooperates with the first bearing 121 to effect a rotational connection between the main drive shaft 122 and the housing 11. The part of the main transmission shaft 122 extending out of the box body 11 is used for connecting a transmission mechanism of a drive axle to obtain power. The driving sprocket 123 is sleeved on the part of the main transmission shaft 122 located in the box body 11 and can rotate together with the main transmission shaft 122; the driving sprocket 123 is provided with a plurality of rows of teeth 15 along a circumferential direction, and the plurality of rows of teeth 15 are engaged with the plurality of rows of chains 14, so that a chain transmission is formed between the driving member 12 and the driven member 13 to transmit power to the driven member 13.

Further, the number of the driving sprockets 123 is two, and the two driving sprockets 123 are arranged at intervals along the axial direction of the main transmission shaft 122; each driving sprocket 123 is provided with a plurality of rows of chain teeth 15, each driving sprocket 123 and one driven member 13 realize chain transmission to transmit power to the driven member 13, so that the load borne by the single driving sprocket 123 can be reduced, the service life can be prolonged, and the processing is convenient.

Furthermore, the multi-row chain 14 is a double-row roller chain, and the multi-row chain teeth 15 are double-row chain teeth, so that the bearing capacity can be improved, the structure of the multi-row chain 14 can be simplified as much as possible, and the processing difficulty and the processing cost can be reduced.

EXAMPLE III

The balance box 1 provided in the embodiment is further improved on the basis of the second embodiment.

As shown in fig. 3, the driving member 12 further includes a first limiting member 124 and a second limiting member 125. The first limiting member 124 is sleeved at one end of the main transmission shaft 122 located in the box body 11 and is fixedly connected with the main transmission shaft 122; the first stopper 124 abuts against an end surface of a driving sprocket 123 away from the first bearing 121. The number of the second position-limiting members 125 is two, and the second position-limiting members are sleeved on the main transmission shaft 122 at the portion inside the box body 11; two second limiting members 125 are disposed at intervals along the axial direction of the main transmission shaft 122, wherein one second limiting member 125 is disposed between the two driving sprockets 123, and two ends of the second limiting member 125 respectively abut against end surfaces of the two driving sprockets 123; the other second limiting member 125 is disposed between the first bearing 121 and one of the driving sprockets 123 close to the first bearing 121, and two ends of the second limiting member 125 abut against the first bearing 121 and end surfaces of the driving sprockets 123 close to the first bearing 121, so that the two driving sprockets 123 are axially positioned by the first limiting member 124 and the two second limiting members 125, and the two driving sprockets 123 are limited from axial displacement, so that the driving sprockets 123 are kept stable during the rotation process.

Example four

The embodiment provides a balance box 1, and is further improved on the basis of the second embodiment.

As shown in fig. 4, the driven member 13 includes a second bearing 131, a driven shaft 132, and a driven sprocket 133. A shaft hole 111 is provided on the other side wall of the case 11 in the width direction, and the second bearing 131 is correspondingly provided at the shaft hole 111. The driven shaft 132 is provided on one side of the main drive shaft 122 in the longitudinal direction of the case 11 and is provided along the width direction of the case 11; the driven shaft 132 is matched with the second bearing 131 to realize rotary connection with the box body 11 so as to support the second bearing 131 through the box body 11; the driven shaft 132 passes through the second bearing 131 and extends out of the box body 11, and the part of the driven shaft 132 extending out of the box body 11 is used for connecting with a driving wheel of the grader. The two driven shafts 132 are respectively disposed at two sides of the main transmission shaft 122, that is, in the length direction of the box 11, the two driven shafts 132 are respectively located in front of and behind the main transmission shaft 122.

The driven sprocket 133 is sleeved on the driven shaft 132 at the part inside the box body 11 and can rotate along with the driven shaft 132; the driven sprocket 133 is provided with a plurality of rows of sprockets 15, and the plurality of rows of sprockets 15 are meshed with the plurality of rows of chains 14, so that chain transmission between the driven wheel and the driving wheel is realized. The diameter of the driven sprocket 133 is greater than that of the driving sprocket 123, so that the speed reduction function is realized in the process of driving the rows of chains 14, the rotating speed transmitted to the driving wheels is reduced, and the rotating speed of the driving wheels meets the construction requirements of the land scraper.

Further, the transmission ratio between the driving sprocket 123 and the driven sprocket 133 ranges from 2:1 to 2.5:1 to enhance the deceleration effect of the balance box 1.

EXAMPLE five

In the present embodiment, a balancing tank 1 is provided, as shown in fig. 5, for a drive axle of a motor grader, and the balancing tank 1 includes a tank body 11, a driving member 12, and a driven member 13.

The box body 11 serves as a supporting structure of the balance box 1, and is used for supporting the driving part 12 and the driven part 13, providing a space for connection between the driving part 12 and the driven part 13, and protecting the driving part 12 and the driven part 13.

The driving part 12 includes a first bearing 121, a main transmission shaft 122, a driving sprocket 123, a first stopper 124 and a second stopper 125. A shaft hole 111 is formed in a side wall of the case 11, and a first bearing 121 is provided in the shaft hole 111. The main transmission shaft 122 is arranged along the width direction of the box body 11, passes through the first bearing 121 and extends out of the box body 11; the main drive shaft 122 cooperates with the first bearing 121 to effect a rotational connection between the main drive shaft 122 and the housing 11. The part of the main transmission shaft 122 extending out of the box body 11 is used for connecting a transmission mechanism of a drive axle to obtain power. The number of the driving sprockets 123 is two, the driving sprockets 123 are sleeved on the part of the main transmission shaft 122, which is located in the box body 11, and the two driving sprockets 123 are arranged at intervals along the axial direction of the main transmission shaft 122 and can rotate together with the main transmission shaft 122; the driving sprocket 123 is provided with a double row of sprocket teeth along the circumferential direction.

The first limiting member 124 is sleeved at one end of the main transmission shaft 122 located in the box body 11 and is fixedly connected with the main transmission shaft 122; the first stopper 124 abuts against an end surface of a driving sprocket 123 away from the first bearing 121. The number of the second position-limiting members 125 is two, and the second position-limiting members are sleeved on the main transmission shaft 122 at the portion inside the box body 11; two second limiting members 125 are disposed at intervals along the axial direction of the main transmission shaft 122, wherein one second limiting member 125 is disposed between the two driving sprockets 123, and two ends of the second limiting member 125 respectively abut against end surfaces of the two driving sprockets 123; the other second limiting member 125 is disposed between the first bearing 121 and one of the driving sprockets 123 close to the first bearing 121, and two ends of the second limiting member 125 abut against the first bearing 121 and end surfaces of the driving sprockets 123 close to the first bearing 121, so that the two driving sprockets 123 are axially positioned by the first limiting member 124 and the two second limiting members 125, and the two driving sprockets 123 are limited from axial displacement, so that the driving sprockets 123 are kept stable during the rotation process.

The number of the driven members 13 is two, and the two driven members 13 are respectively arranged at two sides of the driving member 12, that is, in the length direction of the box body 11, the two driven members 13 are respectively positioned in front of and behind the driving member 12. The follower 13 includes a second bearing 131, a driven shaft 132, and a driven sprocket 133. A shaft hole 111 is provided on the other side wall of the case 11 in the width direction, and the second bearing 131 is correspondingly provided at the shaft hole 111. The driven shaft 132 is provided on one side of the main drive shaft 122 in the longitudinal direction of the case 11 and is provided along the width direction of the case 11; the driven shaft 132 is matched with the second bearing 131 to realize rotary connection with the box body 11 so as to support the second bearing 131 through the box body 11; the driven shaft 132 passes through the second bearing 131 and extends out of the box body 11, and the part of the driven shaft 132 extending out of the box body 11 is used for connecting with a driving wheel of the grader. The driven sprocket 133 is sleeved on the driven shaft 132 at the part inside the box body 11 and can rotate along with the driven shaft 132; the driven sprocket 133 is provided with double rows of sprockets, the double rows of sprockets on the driven sprocket 133 are engaged with the double rows of sprockets on the driving sprocket 123 through a plurality of rows of chains 14, and specifically, the plurality of rows of sprockets 15 are double rows of roller chains, so as to realize chain transmission between the driven wheel and the driving wheel. The diameter of the driven sprocket 133 is larger than that of the driving sprocket 123, so as to realize a speed reduction function in the process of driving the multiple rows of chains 14; the drive ratio between the drive sprocket 123 and the driven sprocket 133 ranges from 2:1 to 2.5:1 to reduce the rotational speed transmitted to the drive wheels so that the rotational speed of the drive wheels meets the construction requirements of the grader.

The balance box 1 in this embodiment changes the chain structure for realizing chain transmission between the driving part 12 and the driven part 13, and by adopting the multiple rows of chains 14, the bearing capacity of the chains is improved, so that the balance box 1 can further improve the transmission ratio by improving the structure, and the balance box 1 can share a larger proportion in the total transmission ratio of the drive axle, so that the structures of other speed reducers (such as a main speed reducer and a wheel-side speed reducer) in the drive axle can be correspondingly simplified, the service life is prolonged, and the miniaturization and lightweight design of the drive axle is facilitated.

EXAMPLE six

In the present embodiment, a drive axle 2 is provided for a motor grader.

As shown in fig. 1 and 6, the transaxle 2 includes a transaxle case 21, a final drive 22, and two balance boxes 1 in any of the above embodiments. The transaxle case 21 serves as a mounting base for providing a mounting space and support for various components inside the transaxle 2, and serves as a protection. The transaxle case 21 is provided along the width direction of the grader, and the final drive 22 is provided in the transaxle case 21 and located in the middle of the transaxle case 21. The input 221 of the final drive 22 extends outwardly from one end of the transaxle case 21 for connection to the drive mechanism of the motor grader for power. The width direction of land leveler is followed to transaxle 21's both sides extension, and transaxle 21's both sides are located respectively along the width direction of land leveler to two balance boxes 1 to be connected with transaxle 21 respectively. The part of the driving part 12 of the balance box 1, which is positioned outside the box body 11, extends into the drive axle housing 21 and is in transmission connection with the output end 222 of the main reducer 22, so that power is transmitted to the balance box 1 through the main reducer 22, and then the power is transmitted to the driving wheels of the grader through the balance box 1. The main reducer 22 and the balance box 1 realize reduction of output rotation speed while transmitting power, so that the rotation speed of the driving wheel of the land scraper meets the construction requirement of the land scraper.

The drive axle 2 in this embodiment is decelerated through the main reducer 22 and the balance box 1 by two stages, so that the output power of the driving mechanism of the grader can be transmitted to the driving wheel, the rotating speed of the driving wheel is reduced to meet the requirement of the grader for construction and running, the three-stage deceleration mechanism of the traditional drive axle is simplified, and the miniaturization and lightweight design of the drive axle 2 are facilitated.

In addition, the drive axle 2 in this embodiment also has all the advantages of the balance box 1 in any of the above embodiments, and details are not described herein.

EXAMPLE seven

The embodiment provides a drive axle 2, and is further improved on the basis of the sixth embodiment.

As shown in fig. 1 and 7, the drive axle 2 further includes a wheel reduction unit 23 to add a first reduction stage. Specifically, the number of the wheel reducers 23 is two, the two wheel reducers 23 are respectively arranged on two sides of the main reducer 22 along the width direction of the grader, the input ends of the wheel reducers 23 are in transmission connection with the output ends 222 of the main reducer 22, and the output ends of the wheel reducers 23 are in transmission connection with the driving part 12 of the balancing box 1 located on the same side, so that transmission connection between the main reducer 22 and the driving part 12 of the balancing box 1 is achieved. In the process that the main reducer 22 transmits power to the driving part 12, three-stage speed reduction is realized through the main reducer 22, the hub reduction gear 23 and the balance box 1 so as to further reduce the output rotating speed. Because chain transmission is realized between the driving part 12 and the driven part 13 in the balance box 1 in the embodiment by adopting the multiple rows of chains 14, the bearing capacity is stronger, the transmission ratio of the balance box 1 can be greatly improved, and under the condition that the total transmission ratio of the drive axle 2 is not changed, the transmission ratios of the main speed reducer 22 and the wheel-side speed reducer 23 can be correspondingly reduced, so that the loads borne by the main speed reducer 22 and the wheel-side speed reducer 23 are reduced, the service lives of the main speed reducer 22 and the wheel-side speed reducer 23 are prolonged, and the maintenance cost is reduced.

Example eight

In the present embodiment, a motor grader 3 is provided, and as shown in fig. 1, 6, and 8, the motor grader 3 includes a motor grader body 31, a drive mechanism 32, and the transaxle 2 in the sixth embodiment described above.

The grader body 31 serves as a main body of the grader 3, and two driving wheels 312 are disposed on two sides of the grader body 31 to drive the grader body 31 to run, specifically, the number of the driving wheels 312 is four, and two driving wheels 312 are disposed on two sides of the grader body 31. The middle of the grader body 31 is provided with a working mechanism 311 for performing grading work during running. A drive mechanism 32 is provided in the grader body 31 for supplying power to the grader body 31.

The transaxle 2 is provided at the bottom of the grader vehicle body 31, and the transaxle case 21 of the transaxle 2 is provided in the width direction of the grader vehicle body 31. The input end 221 of the main reducer 22 of the drive axle 2 is arranged towards the driving mechanism 32 and is in transmission connection with the output end of the driving mechanism 32 to obtain power; the two balance boxes 1 of the transaxle 2 are respectively disposed on both sides of the grader body 31 in the width direction, and the driven member 13 of the balance box 1 is in transmission connection with the drive wheel 312 located on the same side of the grader body 31. When the grader 3 is in a working state, the power of the driving mechanism 32 is transmitted to the balance box 1 through the main speed reducer 22, and then transmitted to the driving wheel 312 through the balance box 1, so that the driving wheel 312 rotates to drive the grader body 31 to run; at the same time, the rotational speed is reduced by the final drive 22 and the balancing tank 1, so that the rotational speed of the drive wheels 312 meets the driving requirements of the grader body 31. The driving part 12 and the driven part 13 of the balance box 1 are in chain transmission through a plurality of rows of chains 14, so that the bearing capacity can be improved, and conditions are provided for improving the transmission ratio of the balance box 1; after the transmission ratio of the balance box 1 is improved, the power transmission and the speed reduction function can be completed only through the main speed reducer 22 and the two-stage transmission of the balance box 1 under the condition that the total transmission ratio of the land leveler 3 is not changed, the three-stage speed reduction mechanism in the traditional drive axle is simplified, and the drive axle 2 is favorable for realizing miniaturization and light weight.

In addition, the grader 3 in this embodiment further includes all the beneficial effects of the drive axle 2 in the sixth embodiment, which are not described herein again.

In another implementation manner of this embodiment, the drive axle 2 of the grader 3 may also be the drive axle 2 in the seventh embodiment, and three-stage speed reduction is realized through the final drive 22, the wheel reduction 23 and the balance box 1. Wherein, adopt multirow chain 14 to realize chain drive between driving part 12 and the driven part 13 in the balance box 1, bearing capacity is stronger for the drive ratio of balance box 1 can promote by a wide margin, under the unchangeable condition of total drive ratio of transaxle 2, can reduce the drive ratio of main reducer 22 and wheel reduction 23 correspondingly, with the load that reduces main reducer 22 and wheel reduction 23 and bear, be favorable to prolonging the life of main reducer 22 and wheel reduction 23, reduce the maintenance cost.

Above combine the technical scheme according to the utility model discloses a according to the detailed description of the attached drawings, through changing the chain structure that realizes the chain drive between driving part and the follower, adopt the multirow chain promptly, thereby the bearing capacity of chain has been improved, thereby can improve the structure of driving part and follower, with the drive ratio who improves the balance box, make the balance box can share bigger proportion in the total drive ratio, thereby other decelerator's in the transaxle structure can be simplified correspondingly, and prolonged service life is favorable to realizing the miniaturization and the lightweight design of transaxle.

In embodiments in accordance with the present invention, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art as the case may be.

In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit referred to must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the technical aspects of the present application.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment according to the present invention, and is not intended to limit the technical solution of the present invention, and it is obvious to those skilled in the art that various modifications and changes can be made in the technical solution of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the technical scheme of the application shall be included in the protection scope of the application.

Claims (10)

1. A balancing tank (1) for a drive axle (2) of a motor grader (3), characterized in that it comprises:

a box body (11);

the driving part (12) is arranged along the width direction of the box body (11) and is rotationally connected with the box body (11), part of the driving part (12) is positioned in the box body (11), and the part of the driving part (12) positioned outside the box body (11) is used for being connected with a transmission mechanism of the drive axle (2);

two driven members (13) which are respectively positioned at two sides of the driving member and are rotationally connected with the box body (11), wherein part of each driven member (13) is positioned in the box body (11) and is in chain transmission with the driving member (12) through a plurality of rows of chains (14), the part of each driven member (13) positioned outside the box body (11) and the part of each driving member (12) positioned outside the box body (11) are respectively positioned at two sides of the box body (11), and the part of each driven member (13) positioned outside the box body (11) is used for being connected with a driving wheel (312) of the grader (3);

the driving part (12) drives the driven part (13) to rotate through the multiple rows of chains (14), and the rotating speed of the driven part (13) is smaller than that of the driving part (12).

2. Balancing tank (1) according to claim 1, characterized in that the active member (12) comprises:

the first bearing (121) is arranged on the side wall of one side of the box body (11);

the main transmission shaft (122) is arranged along the width direction of the box body (11) and is rotatably connected with the box body (11) through the first bearing (121), the main transmission shaft (122) penetrates through the first bearing (121) and extends out of the box body (11), and the part of the main transmission shaft (122) extending out of the box body (11) is used for being connected with a transmission mechanism of the drive axle (2);

the driving chain wheel (123) is arranged in the box body (11) and sleeved on the main transmission shaft (122), a plurality of rows of chain teeth (15) are arranged on the driving chain wheel (123), and the plurality of rows of chain teeth (15) are meshed with the plurality of rows of chains (14) so as to realize chain transmission between the driving chain wheel (123) and the driven part (13).

3. A balancing tank (1) according to claim 2,

the number of the driving chain wheels (123) is two, the two driving chain wheels (123) are arranged at intervals along the axial direction of the main transmission shaft (122), and each driving chain wheel (123) is provided with a group of multi-row chain teeth (15).

4. A balancing tank (1) according to claim 3, characterized in that the active member (12) further comprises:

the first limiting piece (124) is fixedly connected to one end, located in the box body (11), of the main transmission shaft (122), and the first limiting piece (124) abuts against the end face of one driving sprocket (123) far away from the first bearing (121);

the two second limiting parts (125) are arranged in the box body (11) and sleeved on the main transmission shaft (122), one second limiting part (125) is arranged between the two driving sprockets (123), the other second limiting part (125) is arranged between the first bearing (121) and one driving sprocket (123) close to the first bearing (121), and the axial displacement of the driving sprocket (123) is limited through the first limiting part (124) and the second limiting part (125).

5. A balancing tank (1) according to claim 2, characterized in that the follower (13) comprises:

the second bearing (131) is arranged on the side wall of the other side of the box body (11);

the driven shaft (132) is arranged on one side of the main transmission shaft (122), the driven shaft (132) is arranged along the width direction of the box body (11) and penetrates through the second bearing (131) to extend out of the box body (11), the driven shaft (132) is rotatably connected with the box body (11) through the second bearing (131), and the part of the driven shaft (132) extending out of the box body (11) is used for being connected with a driving wheel (312) of the grader (3);

the driven chain wheel (133) is sleeved on the part of the driven shaft (132) positioned in the box body (11), and a plurality of rows of chain teeth (15) meshed with the plurality of rows of chains (14) are arranged on the driven chain wheel (133);

wherein the diameter of the driven sprocket (133) is greater than the diameter of the drive sprocket (123).

6. A balancing tank (1) according to claim 5,

the drive ratio between the drive sprocket (123) and the driven sprocket (133) ranges from 2:1 to 2.5: 1.

7. A balancing tank (1) according to any one of claims 2 to 6,

the multi-row chain (14) is a double-row roller chain;

the multiple rows of chain teeth (15) are double rows of chain teeth.

8. A drive axle (2) for a motor grader (3), comprising:

a transaxle case (21);

the main speed reducer (22) is arranged in the drive axle housing (21), and an input end (221) of the main speed reducer (22) extends outwards from one end of the drive axle housing (21) and is used for being connected with a driving mechanism (32) of the land leveler (3);

the two balance boxes (1) as claimed in any one of claims 1 to 7 are respectively connected to two sides of the drive axle housing (21) along the width direction of the grader (3), the part of the driving part (12) of the balance box (1) outside the box body (11) extends into the drive axle housing (21) and is in transmission connection with the output end (222) of the main speed reducer (22), and the part of the driven part (13) of the balance box (1) outside the box body (11) is used for connecting with the driving wheel (312) of the grader (3).

9. The transaxle (2) of claim 8 further comprising:

two wheel reduction gears (23), locate in transaxle case (21), and follow the width direction of leveler (3) is located respectively the both sides of main reducer (22), the input of wheel reduction gear (23) with output (222) the transmission of main reducer (22) is connected, the output of wheel reduction gear (23) with be located same one side drive piece (12) the transmission of balance box (1) is connected, in order to reduce main reducer (22) to the rotational speed of drive piece (12) the transmission of balance box (1).

10. A grader (3), characterized by comprising:

the land scraper comprises a land scraper body (31), wherein the middle part of the land scraper body (31) is provided with an operating mechanism (311), and two sides of the land scraper body (31) are provided with driving wheels (312);

a driving mechanism (32) arranged in the land scraper vehicle body (31);

the drive axle (2) of claim 9, which is arranged at the bottom of the grader body (31), wherein the input end (221) of the main reducer (22) of the drive axle (2) is in transmission connection with the output end of the driving mechanism (32), the two balance boxes (1) of the drive axle (2) are respectively arranged at two sides of the grader body (31) along the width direction, and the driven member (13) of the balance box (1) is in transmission connection with the driving wheel (312) positioned at the same side of the grader body (31) so as to transmit power to the driving wheel (312).

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