CN216430434U - Differential lock device and novel wheel type harvester gearbox - Google Patents
Differential lock device and novel wheel type harvester gearbox Download PDFInfo
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- CN216430434U CN216430434U CN202123138006.XU CN202123138006U CN216430434U CN 216430434 U CN216430434 U CN 216430434U CN 202123138006 U CN202123138006 U CN 202123138006U CN 216430434 U CN216430434 U CN 216430434U
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Abstract
The utility model discloses a differential lock device and a novel wheel type harvester gearbox, which comprises a central driven gear, a half shaft bevel gear, a differential left shell, a shifting fork, a pin plate, a telescopic oil cylinder and a spline output shaft; the bolt disc is provided with a bolt and a groove, and the half shaft bevel gear and the differential left shell are both provided with bolt holes corresponding to the bolt; the left shell of the differential is directly connected with the central driven gear, the shaft hole end of a left half axle shaft on the left shell of the differential penetrates through the central through hole of a bolt disc, a bolt is inserted into the bolt hole of the left shell of the differential, and the bolt disc, the left shell of the differential and the central driven gear synchronously rotate; the spline output shaft penetrates through a central through hole of the left shell of the differential, one end of the spline output shaft is connected with the half shaft bevel gear, and the other end of the spline output shaft is matched with the bearing to form a cantilever structure; the shifting fork is connected with the telescopic oil cylinder, and the foot end of the shifting fork is clamped in the groove and is not contacted with the groove; the differential lock device can improve the escaping capability of the harvester when the harvester is trapped in a pit, so that the harvester is suitable for more operation ground conditions.
Description
Technical Field
The utility model relates to a wheel harvester gearbox technical field, concretely relates to differential lock device and novel wheel harvester gearbox.
Background
With the popularization of harvesting mechanization and the rapid development of agricultural machinery technology, the demand for new functions of agricultural machinery is increasing day by day, for example, more and more sugarcane planting users can realize the convenience and high efficiency of harvesting sugarcane, so the popularization rate of the sugarcane harvester in each major sugarcane production area in the world is rapidly increasing, two major categories of wheeled sugarcane harvesters and crawler-type sugarcane harvesters are generated according to the dry and wet conditions of different sugarcane planting soil, sugarcane production areas represented by Guangxi province in China are suitable for the operation of wheeled sugarcane machines, but special conditions such as vehicle sinking soil pits and the like can be encountered in the long-time harvesting process sometimes, and at the moment, the common wheeled sugarcane machines are out of difficulties and even need to be assisted by a crane, so that the technical problems of consuming a large amount of time, manpower, material resources and financial resources and seriously influencing the operation efficiency exist.
The current market mainstream wheel type harvester generally adopts a 3+1 structure gearbox assembly, namely 1 main box, 2 side reducers (1 for each of the left side and the right side) and 1 crossbeam, wherein the main box inputs power by a hydraulic motor, is transmitted to a central driven gear by a driving gear, is transmitted to the left side and the right side reducers from a gear type cross axle differential integrally connected with the central driven gear by a left half shaft and a right half shaft, and finally drives a left driving wheel and a right driving wheel to walk by the left side and the right side reducers respectively; the existing gearbox has the big defect that when a harvester encounters a pit, the left and right driving wheels are asynchronous in rotating speed or seriously skid due to the function of the gear type cross axle differential mechanism, and the escaping capability is limited.
For example, the driving structures of the Wodehonglong 4GQ-1 harvester and the Chenghai 4GQ-130 harvester both belong to a rear wheel driving form with a rear-mounted gearbox of a '3 + 1' structure, and a hydraulic motor is used as a walking power source of the gearbox, but the gearbox of the Wodehonglong 4GQ-1 harvester and the gearbox of the Chenghai 4GQ-130 harvester have no differential lock function, and the trapped-in capability is limited, so that the trapped-in can not be trapped and the trapped-in can be trapped by depending on external force; therefore, the problem to be solved is to improve the escaping capability of the wheel type harvester.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a differential lock device, this differential lock device can improve the ability of getting rid of poverty when the harvester pitfalls, makes the harvester adapt to more operation ground conditions.
The utility model aims at providing a novel wheel harvester gearbox, this novel wheel harvester's gearbox includes above-mentioned differential lock device, can open the differential lock function through automatically controlled button when needs, is showing the promotion ability of getting rid of poverty.
The utility model discloses a first technical scheme who adopts is: a differential lock device comprises a central driven gear 1, a half shaft bevel gear 2, a differential left shell 3, a shifting fork 4, a pin disc 5, a telescopic oil cylinder 6 and a spline output shaft 8; a bolt 51 is arranged on the bolt disc 5, a groove 53 is arranged on the outer side of the circumference of the bolt disc 5, and bolt holes 9 corresponding to the bolt 51 are formed in the half-shaft bevel gear 2 and the differential left shell 3;
the differential left shell 3 is directly connected with the central driven gear 1, a left side gear shaft hole end on the differential left shell 3 penetrates through a central through hole 52 of the bolt disc 5, and the bolt 51 is inserted into the bolt hole 9 of the differential left shell 3, so that the bolt disc 5, the differential left shell 3 and the central driven gear 1 synchronously rotate; the spline output shaft 8 penetrates through a central through hole 31 of the left differential case 3, one end of the spline output shaft is connected with the half shaft bevel gear 2, and the other end of the spline output shaft is matched with a bearing to form a cantilever structure; the shifting fork 4 is connected with the telescopic oil cylinder 6, and the foot end of the shifting fork is clamped in the groove 53 and is not contacted with the groove 53.
Preferably, the differential left case 3 and the central driven gear 1 are directly connected by bolts.
Preferably, the side bevel gear 2 is held in non-contact floating rotation inside the differential left case 3.
Preferably, the shifting fork 4 is fixedly connected to the end of the piston rod of the telescopic cylinder 6 through a stop screw 7.
Preferably, when the differential lock device is unlocked, the end of the shift fork leg is in point contact with the groove 53, the pin 51 is inserted into the pin hole 9 of the side bevel gear 2, and the side bevel gear 2 is integrally connected to the differential left case 3 and the central driven gear 1.
The utility model discloses a second technical scheme who adopts is: a novel wheel type harvester gearbox comprises a differential lock switch, a central controller, an electromagnetic directional valve 10 and a differential lock device in the first technical scheme;
the differential lock switch is connected with the central controller, the central controller is connected with the electromagnetic directional valve 10, and the electromagnetic directional valve 10 is connected with the telescopic oil cylinder 6 in the differential lock device.
Preferably, the vehicle-mounted differential lock further comprises a main box, wherein the differential lock switch and the electromagnetic directional valve 10 are installed outside the main box, and the differential lock device is arranged in a left driving half shaft of the main box.
Preferably, the oil port a 101 of the electromagnetic directional valve 10 is connected with the oil chamber a 61 of the telescopic oil cylinder 6, and the oil port B102 of the electromagnetic directional valve 10 is connected with the oil chamber B62 of the telescopic oil cylinder 6.
Preferably, a vehicle speed sensor 13 is further included, and the vehicle speed sensor 13 is connected with the central controller.
Preferably, the vehicle speed sensor 13 is mounted on the main box.
The beneficial effects of the above technical scheme are that:
(1) the utility model discloses a differential lock device has small and exquisite, light and handy, simple effectual advantage, and the success arrangement under the finite space can be realized to small and exquisite, the lightweight of its structure, combines electric liquid contact return circuit and control protection logic can realize the differential lock function that the effect is showing simultaneously.
(2) The utility model discloses a differential lock device can improve the ability of getting rid of poverty when the harvester pitfalls, makes the harvester adapt to more operation ground conditions.
(3) The utility model discloses a novel wheel harvester gearbox can open differential lock device through the differential lock switch when needs, is showing the ability of getting rid of poverty, operating efficiency and the economic benefits that promote wheel harvester.
(4) Experiments prove that when the right driving wheel of the experimental vehicle is trapped in a mud pit and the left driving wheel is not trapped in the pit, the right driving wheel is continuously oiled to fly and idle and sink in an accelerated manner, the accelerator is loosened to open the differential lock device, the differential lock function is started after 5 seconds, the right driving wheel is synchronously rotated at the rotating speed of the left driving wheel which is not trapped in the pit when the right driving wheel is refueled again, the right driving wheel is taken out of the mud pit and successfully trapped, the experiments prove that the differential lock device and the control protection logic are effective, and the trapped pit trapping capability of the harvester is remarkably improved through the matched use of the differential lock device and the control protection logic.
Drawings
Fig. 1 is an exploded view of a differential lock device according to the present invention;
fig. 2 is a schematic structural view of the differential lock device according to the present invention in an engaged state;
fig. 3 is a schematic structural view of a half-shaft bevel gear according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a left differential case according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a latch plate according to an embodiment of the present invention;
fig. 6 is a schematic diagram of the communication of the differential lock function control unit according to an embodiment of the present invention;
wherein, 1-central driven gear; 2-half shaft bevel gear; 3-a left differential shell, 31-a central through hole and 32-a left half axle gear shaft hole end; 4-a shifting fork; 5-a latch disc, 51-a latch, 52-a central through hole and 53-a groove; 6-telescopic oil cylinder, 61-A oil chamber and 62-B oil chamber; 7-a stop screw; an 8-splined output shaft; 9-bolt holes; 10-an electromagnetic directional valve, a 101-A oil port and a 102-B oil port; 11-motor flush valve; 12-a differential; 13-vehicle speed sensor.
Detailed Description
The present invention is further described in the following with reference to specific embodiments, and it should be noted that, for those skilled in the art, a plurality of modifications and improvements can be made without departing from the principle of the present invention, and these should also be considered as belonging to the protection scope of the present invention.
Example 1
As shown in fig. 1 to 2, the utility model provides a differential lock device, which comprises a central driven gear 1, a half shaft bevel gear 2, a differential left shell 3, a shifting fork 4, a latch plate 5, a telescopic cylinder 6, a stop screw 7 and a spline output shaft 8; as shown in fig. 3-5, the latch plate 5 is provided with a latch 51 and a central through hole 52, and the outer side of the circumference of the latch plate 5 is provided with a groove 53; the left differential case 3 is provided with a central through hole 31 and a bolt hole 9 corresponding to the bolt 51, and the half-shaft bevel gear 2 is provided with the bolt hole 9 corresponding to the bolt 51.
The left differential shell 3 and the central driven gear 1 are directly connected by using bolts and rotate synchronously all the time, a left half axle gear shaft hole end 32 on the left differential shell 3 penetrates through a central through hole 52 of a bolt disc 5, so that the bolt disc 5 is sleeved outside the left differential shell 3, and a bolt 51 on the bolt disc 5 is always inserted into a bolt hole 9 of the left differential shell 3 and keeps rotating synchronously with the left differential shell 3 and the central driven gear 1; the spline output shaft 8 penetrates through a central through hole 31 of the left differential case 3, one end of the spline output shaft is fixed with the half shaft bevel gear 2 through a shaft end retainer ring, the other end of the spline output shaft is matched with a bearing to form a cantilever structure, and the cantilever structure supports the half shaft bevel gear 2 to keep a non-contact suspension state and independently rotate at the inner side of the left differential case 3; the shifting fork 4 is fixed at the end of a piston rod of the telescopic oil cylinder 6 by a stop screw 7; the fork foot ends are clamped in the grooves 53 on the outer side of the circumference of the plug plate and do not contact with the grooves 53 (the width of the fork foot ends is smaller than the width of the grooves 53, and the height of the fork foot ends clamped in the groove parts is smaller than the depth of the grooves).
When the differential lock is not opened, the shifting fork 4 is not in contact with the plug pin disc 5, and the half shaft bevel gear 2 is suspended in the left differential case 3 and is not connected with the plug pin disc 5, the left differential case 3 and the central driven gear 1 into a whole;
when the left driving wheel and the right driving wheel meet different external forces, a rotation speed difference is generated due to the action of the cross axle differential mechanism, even the cross axle differential mechanism slips on one side, the differential lock device is started at the moment, the telescopic oil cylinder 6 extends, the telescopic oil cylinder 6 pushes the shifting fork 4 to move towards the direction of the central driven gear 1, the shifting fork foot end of the shifting fork 4 moves rightwards to form a point contact relation with the groove 53 of the latch plate 5 at the moment, the shifting fork 4 pushes the latch plate 5, the latch 51 on the latch plate 5 is inserted into the latch hole 9 on the half axle bevel gear 2, namely the latch plate 5, the half axle bevel gear 2 and the differential left shell 3 are engaged and locked, and the half axle bevel gear 2, the differential left shell 3 and the central driven gear 1 are integrally locked to realize the differential lock function.
The utility model discloses a differential lock device has small and exquisite, light and handy, simple effectual advantage, and the success arrangement under the finite space can be realized to small and exquisite, the lightweight of its structure, combines electric liquid contact return circuit and control protection logic can realize the differential lock function that the effect is showing simultaneously.
The utility model discloses a differential lock device can improve the ability of getting rid of poverty when the harvester pitfalls, makes the harvester adapt to more operation ground conditions.
Example 2
The utility model provides a novel wheel type harvester gearbox, which comprises a main box, a differential lock switch, a central controller, an electromagnetic directional valve 10 and the differential lock device in the embodiment 1; wherein the differential lock switch and the electromagnetic directional valve 10 are arranged outside the main box, and the differential lock device is arranged in a left driving half shaft of the main box; as shown in fig. 6, the differential lock switch is connected with the central controller, the central controller is connected with the electromagnetic directional valve 10, and the electromagnetic directional valve 10 is connected with the telescopic oil cylinder 6 in the differential lock device; the differential lock switch controls the opening of the electromagnetic directional valve 10 and the oil circuit switching through the central controller, an oil port A101 of the electromagnetic directional valve 10 is connected with an oil chamber A61 of the telescopic oil cylinder 6 through a hydraulic oil pipe, and an oil port B102 of the electromagnetic directional valve is connected with an oil chamber B62 of the telescopic oil cylinder 6 through a hydraulic oil pipe.
The structural linkage process of the differential lock device in the wheel type harvester gearbox is as follows:
as shown in fig. 6, the opening and closing of the differential lock device are controlled by adopting electro-mechanical-hydraulic linkage, when a driving wheel slips, the differential lock needs to be opened, the electromagnetic directional valve 10 is opened according to a primary differential lock switch, hydraulic oil in the hydraulic oil tank flows out of an oil outlet of the oil tank, and flows into an oil cavity a 61 of the telescopic oil cylinder 6 through an oil port a 101 of the hydraulic motor flushing valve 11 and the electromagnetic directional valve 10 in sequence, so that the telescopic oil cylinder 6 extends, a shifting fork 4 fixed on a piston end of the telescopic oil cylinder 6 is contacted with a plug pin disc 5, the plug pin disc 5 is driven to be combined with a half-axle bevel gear 2 and a central driven gear 1 into a whole, the differential lock function takes effect, at the moment, the function of a differential mechanism 12 is suspended, the left half-axle and the right half-axle are synchronously rotated with the central driven gear 1, the driving wheel stops slipping, and the vehicle is stranded;
when the differential lock needs to be closed, the electromagnetic directional valve 10 switches an oil way by pressing the differential lock switch once again, hydraulic oil flows into the oil cavity B62 of the telescopic oil cylinder 6 through the oil port B102 of the electromagnetic directional valve 10 to reversely push the telescopic oil cylinder 6 to reset, the shifting fork 4 fixed at the piston end of the telescopic oil cylinder 6 drives the pin disc 5 to be separated from the slot of the half-shaft bevel gear 2, the differential lock is closed, and the function of the differential mechanism is recovered.
The utility model discloses a wheel type harvester gearbox can open differential lock device through the differential lock switch, makes differential lock device performance differential lock function to show stranded ability, operating efficiency and the economic benefits who promotes wheel type harvester.
The utility model discloses place left side drive semi-axis one side of "3 + 1" structure harvester gearbox main tank in the differential lock device among the above-mentioned embodiment 1 in, integrated automatically controlled, liquid accuse and mechanical transmission, from automatically controlled to liquid accuse to mechanical transmission again promptly to combine control protection logic (need satisfy two earlier clockwork pieces simultaneously: the speed of a motor vehicle is less than the settlement threshold value, reach the settlement time according to the differential lock switch in succession, can only open differential lock device through the differential lock switch after satisfying two start-up conditions simultaneously) to realize effectual differential lock function.
The control protection logic is specifically as follows:
the function of opening the differential lock needs to satisfy two conditions of first-generation simultaneously:
the first condition is as follows: the vehicle speed is lower than a set threshold, for example (but not limited to) 5 km/h;
and (2) carrying out a second condition: the differential lock switch is continuously pressed for a set time, for example, 5 seconds (but not limited thereto).
The specific control process of the control protection logic is as follows:
as shown in fig. 6, the vehicle speed data is collected by a vehicle speed sensor 13 arranged on the upper cover of the main box and transmitted to the central controller for monitoring in real time, when the vehicle speed is higher than a set threshold (for example, 5km/h), the differential lock switch is pressed, the central controller executes a command of not sending an instruction of opening the electromagnetic directional valve 10, at the moment, the differential lock switch is pressed for a set time (for example, 5s), the differential lock device is not opened, namely, the differential lock switch is pressed to be invalid; when the vehicle speed is lower than a set threshold value and the set time is reached by pressing the differential lock switch, the central controller executes and sends an instruction for opening the oil port A of the electromagnetic directional valve, at the moment, hydraulic oil flows into the oil chamber A61 of the telescopic oil cylinder 6 from the motor flushing valve 11 through the oil port A101 of the electromagnetic directional valve 10, and the pin plate 5 and other structural units are pushed to open the differential lock function in a linkage manner; when the differential lock device is closed, the differential lock switch is pressed down again, the central controller executes an instruction for sending and switching to the oil port B102 of the electromagnetic directional valve 10, at the moment, hydraulic oil flows into the oil chamber B62 of the telescopic oil cylinder 6 from the motor flushing valve 11 through the oil port B102 of the electromagnetic directional valve 10, and the telescopic oil cylinder 6 is pushed reversely to drive the pin plate 5 to reset and close the differential lock device.
The control protection logic is suitable for the protection type starting logic of differential lock control, effectively protects the structure of the exquisite differential lock device and avoids misoperation.
Experiments prove that when the right driving wheel of the experimental vehicle is sunk in a mud pit and the left driving wheel is not sunk, the right driving wheel is continuously oiled to idle at a high speed and sink at an accelerated speed, the accelerator is loosened to open the differential lock function, the differential lock function is started after 5 seconds, the right driving wheel is synchronously rotated at the rotating speed of the left driving wheel which is not sunk, the right driving wheel is taken out of the mud pit to be successfully trapped, the experiments prove that the differential lock device is effective, the control protection logic is effective, and the trapped pit trapping capability of the harvester is remarkably improved by matching the differential lock device with the control protection logic.
Claims (10)
1. A differential lock device comprises a central driven gear (1), a half shaft bevel gear (2), a differential left shell (3), a shifting fork (4), a plug pin disc (5), a telescopic oil cylinder (6) and a spline output shaft (8); the differential mechanism is characterized in that a bolt (51) is arranged on the bolt disc (5), a groove (53) is formed in the outer side of the circumference of the bolt disc (5), and bolt holes (9) corresponding to the bolt (51) are formed in the half-shaft bevel gear (2) and the differential mechanism left shell (3);
the differential left shell (3) is directly connected with the central driven gear (1), a left half axle gear shaft hole end on the differential left shell (3) penetrates through a central through hole (52) of the plug pin disc (5), and the plug pin (51) is inserted into a plug pin hole (9) of the differential left shell (3) so that the plug pin disc (5), the differential left shell (3) and the central driven gear (1) synchronously rotate; the spline output shaft (8) penetrates through a central through hole (31) of the differential left shell (3), one end of the spline output shaft is connected with the half shaft bevel gear (2), and the other end of the spline output shaft is matched with a bearing to form a cantilever structure; the shifting fork (4) is connected with the telescopic oil cylinder (6), and the foot end of the shifting fork is clamped in the groove (53) and is not in contact with the groove (53).
2. A differential lock arrangement according to claim 1, characterised in that the differential left housing (3) is bolted directly to the central driven gear (1).
3. A differential lock device according to claim 1, characterised in that the side bevel gear (2) is held in non-contact floating rotation inside the differential left housing (3).
4. A differential lock device according to claim 1, characterized in that the fork (4) is fixedly connected to the end of the piston rod of the telescopic cylinder (6) by means of a stop screw (7).
5. A differential lock device according to claim 1, characterized in that when the differential lock device is opened, the fork foot end comes into point contact with the groove (53), the pin (51) is inserted into the pin hole (9) in the bevel half gear (2), and the bevel half gear (2) is integrated with the differential left case (3) and the central driven gear (1).
6. A novel gear box of a wheel type harvester, which is characterized by comprising a differential lock switch, a central controller, an electromagnetic directional valve (10) and the differential lock device as claimed in any one of claims 1 to 5;
the differential lock switch is connected with the central controller, the central controller is connected with the electromagnetic directional valve (10), and the electromagnetic directional valve (10) is connected with a telescopic oil cylinder (6) in the differential lock device.
7. The novel gear box of a wheeled harvester as claimed in claim 6, characterized by further comprising a main box, wherein the differential lock switch and the electromagnetic directional valve (10) are installed outside the main box, and the differential lock device is arranged in a left driving half shaft of the main box.
8. The novel wheel type harvester gearbox as claimed in claim 6, characterized in that an oil port A (101) of the electromagnetic directional valve (10) is connected with an oil chamber A (61) of the telescopic oil cylinder (6), and an oil port B (102) of the electromagnetic directional valve (10) is connected with an oil chamber B (62) of the telescopic oil cylinder (6).
9. The novel gearbox of a wheel harvester according to claim 7, characterized by further comprising a vehicle speed sensor (13), wherein the vehicle speed sensor (13) is connected with the central controller.
10. A novel gear box for a wheeled harvester according to claim 9, characterized in that the vehicle speed sensor (13) is mounted on the main box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123138006.XU CN216430434U (en) | 2021-12-14 | 2021-12-14 | Differential lock device and novel wheel type harvester gearbox |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123138006.XU CN216430434U (en) | 2021-12-14 | 2021-12-14 | Differential lock device and novel wheel type harvester gearbox |
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| CN216430434U true CN216430434U (en) | 2022-05-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023109122A1 (en) * | 2021-12-14 | 2023-06-22 | 中联农业机械股份有限公司 | Differential lock apparatus and novel wheeled harvester gearbox |
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- 2021-12-14 CN CN202123138006.XU patent/CN216430434U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023109122A1 (en) * | 2021-12-14 | 2023-06-22 | 中联农业机械股份有限公司 | Differential lock apparatus and novel wheeled harvester gearbox |
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