CN212248471U - Running gear who adapts to complicated topography - Google Patents

Abstract

The utility model provides a walking mechanism suitable for complex terrains, which comprises a walking type walking mechanism, a first transmission shaft, a second transmission shaft, an engine, a clutch, a driving shaft, a driving axle, a double-output-shaft transmission and a wheel type excavator suspension; the clutch is positioned between the engine and the double-output-shaft transmission, a second output shaft of the transmission is connected with a first transmission shaft, the first transmission shaft is connected with a rear drive axle, wheels are arranged at two ends of the rear drive axle, the first output shaft of the transmission is connected with a second transmission shaft, the second transmission shaft is connected with a drive shaft, two ends of the drive shaft are connected with a rotary handle of the walking type walking mechanism, and the walking type walking mechanism is arranged at two sides of a suspension frame of the excavator. In the utility model, the input shaft and the second output shaft are in transmission connection to form a first working condition; the input shaft is drivingly connected to the first output shaft to establish a second operating condition. Therefore, the mechanism has strong climbing capability and good stability.

Description

Running gear who adapts to complicated topography

Technical Field

The utility model belongs to the technical field of running gear, especially, relate to a running gear who adapts to complicated topography.

Background

An excavator is also called a digger, and is an earthwork machine which excavates materials higher or lower than a bearing surface by a bucket and loads the materials into a transport vehicle or unloads the materials to a stockyard, and the earthwork machine can complete projects which cannot be completed by manpower, effectively improve the working efficiency and save the manpower. Excavators are widely used in engineering construction such as highways, bridges, buildings, underground works, emergency excavation and the like, and the excavator has become one of the most important engineering machines in the engineering construction. The excavator may be classified into a crawler excavator, a tire excavator, a walking excavator, etc. according to the walking manner. At present, the domestic excavator is mainly a crawler excavator, and then is a tire excavator, but the walking excavator is less. Compared with a crawler excavator, the rubber-tyred excavator has the advantages of high walking speed, capability of automatically transferring in a long distance, capability of quickly replacing various operation devices, flexibility and high efficiency.

However, in the prior art, the tire type excavator has poor climbing capability and poor stability, and under severe working conditions such as muddy areas, the tire of the tire type excavator is easy to dent, so that the working efficiency is affected, and the application of the tire type excavator in China is severely restricted.

Disclosure of Invention

An object of the utility model is to provide a running gear who adapts to complicated topography, when this mechanism during operation under abominable operating mode, start walking formula running gear through dual output axle derailleur and in order to carry out work, utilize the difficult sunken characteristics of running plate, supplementary this mechanism walking operation. In order to achieve the above purpose, the utility model adopts the following technical scheme:

a walking mechanism suitable for complex terrains comprises an engine 1, a clutch 2 and a double-output-shaft transmission 3 which are sequentially connected; the engine 1 and the double-output-shaft transmission 3 are both fixed on an excavator suspension 9; the dual output shaft transmission 3 comprises a first output shaft 38 and a second output shaft 39;

the second output shaft 39 is connected with a first transmission shaft 7 through a coupler; the first transmission shaft 7 is connected with a rear drive axle 8 through a first gear transmission mechanism; rear wheels are mounted at two ends of the rear drive axle 8; a front wheel is also rotatably arranged on the excavator suspension 9;

the first output shaft 38 is connected with a second transmission shaft 4 through a coupler; the second transmission shaft 4 is connected with a driving shaft 5 through a second gear transmission mechanism; the drive shaft 5 is rotatably mounted to the excavator suspension 9 and extends out of the excavator suspension 9; two ends of the driving shaft 5 extending out of the excavator suspension 9 are respectively fixed with a rotary handle 61; the rotary handle 61 is hinged with a walking type walking mechanism 6; the walking mechanism 6 is positioned outside the excavator suspension 9 and is hinged to the excavator suspension 9;

in a first working condition, the input shaft 31 of the dual-output shaft transmission 3 is in transmission connection with the second output shaft 39; in the second operating condition, the input shaft 31 of the dual output shaft transmission 3 is drivingly connected to the first output shaft 38 to form the second operating condition.

Preferably, the dual output shaft transmission 3 further comprises a transmission case 314, and the input shaft 31, the first output shaft 38 and the second output shaft 39 are rotatably mounted in the transmission case 314 from top to bottom;

the input shaft 31 is connected with the output end of the clutch; the output ends of the first output shaft 38 and the second output shaft 39 are far away from the clutch 2 and extend out of the gearbox body 314;

a first driving gear 32, a second driving gear 33 and a third driving gear 34 which rotate synchronously are sequentially arranged on the input shaft 31 along the axial direction; the first driving gear 32 is disposed by the clutch 2;

a second driven gear 311, a second synchronizer 312 and a third driven gear 313 are arranged on the second output shaft 39; the second driven gear 311 and the third driven gear 313 are both freely sleeved on the second output shaft 39; the first synchronizer 312 is positioned between the second driven gear 311 and the third driven gear 313 and can be engaged with the second driven gear 311 or the third driven gear 313; the second driven gear 311 is engaged with the second driving gear 33; the third driven gear 313 is engaged with the first driving gear 32;

a first driven gear 37 and a first synchronizer 310 are arranged on the first output shaft 38; the first driven gear 37 is freely sleeved on the first output shaft 38; the first synchronizer 310 is engageable with the first driven gear 37; the first driven gear 37 is engaged with the third driving gear 34.

Preferably, the output shaft transmission 3 further comprises a transmission cover 35, and the transmission cover 35 is fixed to the top of the transmission case 314 by fixing screws 36.

Preferably, the walking mechanism 6 further comprises a walking arm 62, a swinging rod 65 is hinged between the upper end of the walking arm 62 and the excavator suspension 9, and the lower end of the walking arm 62 is connected with a walking plate 63 through an elastic element 64.

Preferably, a groove is formed in the upper section of the walking arm 62, and the groove is open towards the side surfaces of the front wheel and the rear wheel; a first mounting hole which is oppositely arranged is formed in one side surface of the groove facing the excavator suspension 9 and one side surface of the groove far away from the excavator suspension 9;

one end of the swing rod 65 is positioned in the groove, and a section of the swing rod 65 positioned in the groove is provided with a second mounting hole matched with the first mounting hole;

a bolt 66 passes through a first mounting hole, a second mounting hole and another first mounting hole to hinge the swing lever 65 to the traveling arm 62, and the bolt 66 is fixed to the traveling arm 62 by a first stopper nut 67.

Preferably, a cylindrical rod 91 is arranged on the side surface of the excavator suspension 9 facing the walking arm 62, and the other end of the swing rod 65 is sleeved on the cylindrical rod 91; the end of the cylindrical rod 91 is provided with a second limit nut 68.

Preferably, a first bevel gear 72 is fixed at one end of the first transmission shaft 7 far away from the dual output shaft transmission 3; a second bevel gear is arranged on the rear drive axle 8; the first bevel gear 72 and the second bevel gear mesh to form the first gear transmission.

Preferably, the second gear transmission mechanism comprises a third bevel gear fixed on the second transmission shaft 4, a fourth bevel gear arranged on the driving shaft 5; the third bevel gear and the fourth bevel gear are meshed to form the second gear transmission mechanism.

The use method of the walking mechanism adapting to the complex terrain comprises the following steps of:

(1) in a first working condition, the input shaft 31 of the dual-output shaft transmission 3 is in transmission connection with the second output shaft 39; the power of the engine 1 is transmitted to the second output shaft 39 through the input shaft 31, and then transmitted to the rear drive axle 8 through the first transmission shaft 7 connected with the second output shaft 39 so as to drive the rear wheels and the front wheels to rotate, thereby realizing wheel-type walking;

(2) in a second working condition, the input shaft 31 of the dual-output shaft transmission 3 is in transmission connection with the first output shaft 38, the power of the engine 1 is transmitted to the first output shaft 38 through the input shaft 31 and then transmitted to the driving shaft 5 through the second transmission shaft 4 connected with the first output shaft 38, and then the rotating handle 61 of the walking mechanism 6 connected with the driving shaft 5 is driven to rotate; the rotating handle 61 drives the walking mechanism 6 to move so as to realize walking.

Compared with the prior art, the utility model has the advantages that: the running mode of the mechanism is switched through a double-output-shaft speed changer, when the mechanism is in a first working condition with better working condition, the power is controlled to be output by a second output shaft and transmitted to rear wheels through a first transmission shaft and a rear drive axle, and the rear wheels and the front wheels drive the mechanism to run together; when the walking mechanism is in a second working condition with severe geological mud and the like, the control power is output by the first output shaft, the power is transmitted to the turning handle through the second transmission shaft and the driving shaft, namely, the driving shaft rotates to drive the turning handle to turn, so that the walking mechanism is driven to move, and the walking mechanism becomes the driving force for walking of the walking mechanism. Therefore, the utility model can assist the wheel type excavator to walk, is suitable for various complex terrains and has strong climbing capability; further, when the wheel excavator is operated, the traveling plate of the walking mechanism is brought into contact with the ground, so that the tire excavator can be supported and the operation stability of the tire excavator can be improved.

Drawings

Fig. 1 is an outline view of a traveling mechanism adapted to a complex terrain according to an embodiment of the present invention;

fig. 2 is a bottom view of an exploded view of a travel mechanism adapted to complex terrain according to an embodiment of the present invention;

FIG. 3 is a perspective view of the excavator suspension of FIG. 1 with the excavator suspension removed;

FIG. 4 is a bottom view of the step-walking mechanism of FIG. 3;

FIG. 5 is a block diagram of the first driveshaft of FIG. 3;

FIG. 6 is a cross-sectional view of the dual output shaft transmission of FIG. 3 with the lever mechanism removed;

FIG. 7 is a block diagram of the input shaft of FIG. 6;

FIG. 8 is a top view of FIG. 1;

FIG. 9 is a perspective view of the dual output shaft transmission of FIG. 3;

FIG. 10 is a perspective view of the dual output shaft transmission of FIG. 9 with the transmission cover removed;

FIG. 11 is another perspective view of the dual output shaft transmission of FIG. 9 with the transmission cover removed.

Wherein, 1-engine, 2-clutch, 3-double output shaft speed changer, 31-input shaft, 32-first driving gear, 33-second driving gear, 34-third driving gear, 35-gearbox cover, 36-fixing screw, 37-first driven gear, 38-first output shaft, 39-second output shaft, 310-first synchronizer, 311-second driven gear, 312-second synchronizer, 313-third driven gear, 314-gearbox body, 4-second transmission shaft, 5-driving shaft, 6-step walking mechanism, 61-rotation handle, 62-walking arm, 63-walking plate, 64-elastic element, 65-swinging rod, 66-bolt, 67-first limit nut, 68-a second limit nut, 7-a first transmission shaft, 71-a key groove, 72-a first bevel gear, 8-a rear drive axle, 9-an excavator suspension, 91-a cylindrical rod, 10-a gear shift lever and 11-a gear shift fork.

Detailed Description

The present invention will now be described in more detail with reference to the drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art could modify the invention herein described while still achieving the beneficial effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

As shown in fig. 1 to 4, a walking mechanism suitable for complex terrains, such as an excavator, includes an engine 1, a clutch 2, a dual output shaft transmission 3, a second transmission shaft 4, a driving shaft 5, a walking type walking mechanism 6, a first transmission shaft 7, a rear drive axle 8, front wheels, rear wheels, and an excavator suspension 9, which are connected in sequence.

The clutch 2 and the double-output-shaft transmission 3 are both arranged in the excavator suspension 9, the clutch 2 is arranged between the engine 1 and the double-output-shaft transmission 3, and the clutch 2 is fixed on the rear plane of a flywheel of the engine 1 through a bolt assembly. The connection among the engine 1, the clutch 2 and the dual output shaft transmission 3 is the prior art, that is, a driven disc of the clutch 2 contacts with a flywheel of the engine 1, the flywheel drives the driven disc to rotate under the action of friction force, the driven disc of the clutch 2 is connected with an input shaft 31 of the dual output shaft transmission 3, that is, an output shaft of the clutch 2 is the input shaft 31 of the dual output shaft transmission 3.

The dual output shaft transmission 3 comprises a transmission case 314, wherein an input shaft 31, a first output shaft 38 and a second output shaft 39 are rotatably arranged in the transmission case 314 from top to bottom in sequence, as shown in fig. 6, the input shaft 31 is connected with the output end of the clutch; the output ends of the first output shaft 38 and the second output shaft 39 are both remote from the clutch 2 and both extend out of the transmission housing 314.

A first driving gear 32, a second driving gear 33 and a third driving gear 34 which rotate synchronously are sequentially arranged on the input shaft 31 along the axial direction; the first driving gear 32 is disposed by the clutch 2, as shown in fig. 7; specifically, the first driving gear 32, the second driving gear 33 and the third driving gear 34 are all fixedly mounted on the input shaft 31 through flat keys.

A second driven gear 311, a second synchronizer 312 and a third driven gear 313 are arranged on the second output shaft 39; the second driven gear 311 and the third driven gear 313 are both sleeved on the second output shaft 39 in a hollow manner; the second synchronizer 312 is located between the second driven gear 311 and the third driven gear 313 and is engageable with the second driven gear 311 or the third driven gear 313; the second driven gear 311 is engaged with the second driving gear 33; the third driven gear 313 is engaged with the first driving gear 32.

The second output shaft 39 is connected with a first transmission shaft 7 through a coupler, namely, key grooves are formed in the second output shaft 39 and the first transmission shaft 7, and two sections provided with the key grooves are connected through the coupler; the first transmission shaft 7 is connected with a rear drive axle 8 through a first gear transmission mechanism; rear wheels are mounted at two ends of the rear drive axle 8; a front wheel which is parallel to the rear wheel and is positioned in the same plane is rotatably arranged on the excavator suspension 9, the front wheel provides steering action and is arranged at two ends of a front drive axle, and the connection mode between the front wheel and the excavator suspension 9 is the same as the installation mode of the front wheel of the automobile and the automobile base; the rear wheel and the front wheel are both made of rubber materials. Wherein the first gear transmission mechanism comprises a first bevel gear 72 and a second bevel gear; a first bevel gear 72 is fixed at one end of the first transmission shaft 7, which is far away from the dual-output shaft transmission 3, as shown in fig. 5, a key groove 71 is formed at one end of the first transmission shaft 7, and a section with the key groove 71 is connected with the second output shaft 39 through a coupler; a second bevel gear is arranged on the rear drive axle 8; the first bevel gear 72 and the second bevel gear mesh to form a first gear transmission.

The first output shaft 38 is provided with a first driven gear 37 and a first synchronizer 310; the first driven gear 37 is sleeved on the first output shaft 38; the first synchronizer 310 is engageable with the first driven gear 37; the first driven gear 37 is engaged with the third driving gear 34.

The first output shaft 38 is connected with a second transmission shaft 4 through a coupler; the second transmission shaft 4 is connected with a driving shaft 5 through a second gear transmission mechanism; the driving shaft 5 is rotatably mounted on the excavator suspension 9 and extends out of the excavator suspension 9; two ends of the driving shaft 5 extending out of the excavator suspension 9 are respectively fixed with a rotary handle 61; the rotary handle 61 is hinged with a walking type walking mechanism 6; the walking mechanism 6 is positioned outside the excavator suspension 9 and is hinged on two sides of the excavator suspension 9. The second gear transmission mechanism comprises a third bevel gear fixed on the second transmission shaft 4 and a fourth bevel gear arranged on the driving shaft 5; the third bevel gear and the fourth bevel gear are meshed to form a second gear transmission mechanism.

In the first working condition, the input shaft 31 of the double-output-shaft transmission 3 is in transmission connection with the second output shaft 39; in a second operating condition, the input shaft 31 of the dual output shaft transmission 3 is drivingly connected to the first output shaft 38 to establish a second operating condition.

In this embodiment, the transmission case 314 is provided with a lever mechanism; the operating rod mechanism controls the synchronizer to be connected with the idle gear, and power transmission between shafts is achieved. Specifically, the first synchronizer 310 is engageable with the first driven gear 37 under the action of the joystick mechanism, and the first driven gear 37 is meshed with the third driving gear 34; the second synchronizer 312 is engageable with the second driven gear 311 or the third driven gear 313 by the lever mechanism, the second driven gear 311 is engaged with the second driving gear 33, and the third driven gear 313 is engaged with the first driving gear 32. As will be known to those skilled in the art, the operating principle of the lever mechanism in the dual output shaft transmission 3 is the same as that of the lever mechanism of the manual transmission in the prior art, and as shown in fig. 9 to 11, the operating mechanism includes a shift lever 10 and 2 shift forks 11 arranged in a bent manner and selectively connected to the shift lever 10, wherein one shift fork 11 is connected to the first synchronizer 310, and the other shift fork 11 is connected to the second synchronizer 312; the shift lever 10 is disposed above the first output shaft 38 and extends out of the shift case cover 35 and the excavator suspension 9. The principle of selective connection between the shift fork 11 and the shift lever 10 in the dual output shaft transmission 3 is the same as the principle of selective connection between the shift lever and the shift fork in the manual transmission in the prior art. In the present embodiment, the output shaft transmission 3 further includes a transmission cover 35, and the transmission cover 35 is fixed to the top of the transmission case 314 by fixing screws 36.

The walking type walking mechanism 6 further comprises a walking arm 62, a swinging rod 65 is hinged between the upper end of the walking arm 62 and the excavator suspension 9, and the lower end of the walking arm 62 is connected with a walking plate 63 through an elastic element 64, as shown in fig. 4. The walking mechanism 6 can be regarded as a crank link mechanism, and the whole walking mechanism suitable for complex terrains is an excavator; the working principle of the walking mechanism 6 is as follows: during the second operating mode, when gyration handle 61 gyration drove walking arm 62 downward motion, walking plate 63 that the walking arm 62 below is connected must be with walking ground contact, along with walking arm 62 continues the downward motion, elastic element 64 between walking arm 62 and the walking plate 63 can continuously be stressed, when pressurized reaches certain degree, walking arm 62 can not continue the downward motion under the effect of spring reaction force, but gyration handle 61 is still gyration, the gyration motion of gyration handle 61 will drive the excavator in reverse and wholly move forward this moment, after the excavator accomplishes a walking again, walking arm 62 is driven upward motion under the gyration of gyration handle 61, accomplish a circulation. The walking mechanism 6 assists the wheel type excavator to walk under severe working conditions by the circulation of driving the walking arm 62 to move up and down through the rotary handle 61.

Preferably, the upper section of the walking arm 62 is provided with a groove, and the groove is opened towards the side surfaces of the front wheel and the rear wheel; a first mounting hole which is oppositely arranged is formed in one side surface of the groove facing the excavator suspension 9 and one side surface of the groove far away from the excavator suspension 9; one end of the swing rod 65 is positioned in the groove, as shown in fig. 1-4; a section of the swing rod 65 positioned in the groove is provided with a second mounting hole matched with the first mounting hole; a bolt 66 passes through a first mounting hole, a second mounting hole and another first mounting hole to hinge the swing lever 65 to the traveling arm 62, and the bolt 66 is fixed to the traveling arm 62 by a first stopper nut 67, as shown in fig. 8.

A cylindrical rod 91 is arranged on the side surface of the excavator suspension 9 facing the walking arm 62, and the other end of the swinging rod 65 is sleeved on the cylindrical rod 91; the end of the cylindrical rod 91 is threaded to receive the second limit nut 68, as shown in FIGS. 1-2 and 8.

The running mechanism suitable for complex terrains, namely the working principle of the tire type excavator, is as follows:

(1) when the tire type excavator works, the tire is preferentially adopted for walking; that is, when the tire excavator is in a first working condition with a good working condition, the rubber tire is used for walking, the joystick mechanism is manually operated, the joystick mechanism drives the gear sleeve of the second synchronizer 312 on the second output shaft 39 to be connected with the engaging teeth of the second driven gear 311 or the third driven gear 313, so that the second driven gear 311 or the third driven gear 313 in idle connection is fixedly connected with the second output shaft 39, and thus, the power of the engine 1 is transmitted to the second output shaft 39 through the meshed gears via the input shaft 31 and then transmitted to the rear drive axle 8 via the first transmission shaft 7 connected with the second output shaft 39, so as to drive the rear wheel and the front wheel to rotate, and the tire excavator walks. In addition, when the tire excavator works, the traveling plate of the stepping type traveling mechanism 6 is in contact with the ground to support the tire excavator, thereby improving the stability of the tire excavator. In the first working condition, the step-type walking mechanism 6 is kept to be contracted on the excavator suspension 9 and suspended, namely, the step-type walking mechanism 6 is not contacted with the ground.

(2) When the tire type excavator works in an environment with poor geology, the tire has poor climbing capacity, is easy to slip and dent, and influences the working efficiency, and under the condition, the tire type excavator needs to give up wheel type walking and adopts a walking mode. That is, when the tire-type excavator encounters a second working condition, such as mud, which is prone to sinking, the walking mechanism 6 is manually started to assist the excavator in walking, that is, the joystick mechanism is operated to drive the gear sleeve of the first synchronizer 310 on the first output shaft 38 to be connected with the engaging teeth of the first driven gear 37, so that the first driven gear 37 is fixedly connected with the first output shaft 38, because the first driven gear 37 is engaged with the third driving gear 34 fixedly connected with the input shaft 31, the power of the engine 1 is transmitted to the first output shaft 38 through the engaged gear via the input shaft 31, and is transmitted to the driving shaft 5 via the second transmission 4 connected with the first output shaft 38, and further the swing handle 61 of the walking mechanism 6 connected with the driving shaft 5 is driven to swing, and the swing handle 61 drives the whole walking mechanism 6 to move, so as to drive the tire-type excavator to walk.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims (8)

1. A walking mechanism suitable for complex terrains is characterized by comprising an engine (1), a clutch (2) and a double-output-shaft transmission (3) which are sequentially connected; the engine (1) and the double-output-shaft transmission (3) are both fixed on an excavator suspension (9); the dual output shaft transmission (3) comprises a second output shaft (39) and a first output shaft (38);

wherein the second output shaft (39) is connected with a first transmission shaft (7) through a coupling; the first transmission shaft (7) is connected with a rear drive axle (8) through a first gear transmission mechanism; rear wheels are arranged at two ends of the rear drive axle (8); a front wheel is also rotatably arranged on the excavator suspension (9);

the first output shaft (38) is connected with a second transmission shaft (4) through a coupler; the second transmission shaft (4) is connected with a driving shaft (5) through a second gear transmission mechanism; the drive shaft (5) is rotatably mounted to the excavator suspension (9) and extends out of the excavator suspension (9); two ends of the driving shaft (5) extending out of the excavator suspension (9) are respectively fixed with a rotary handle (61); the rotary handle (61) is hinged with a walking type walking mechanism (6); the walking mechanism (6) is positioned outside the excavator suspension (9) and hinged to the excavator suspension (9);

in a first working condition, the input shaft (31) of the double-output-shaft transmission (3) is in transmission connection with the second output shaft (39); and in a second working condition, the input shaft (31) of the double-output-shaft transmission (3) is in transmission connection with the first output shaft (38) to form a second working condition.

2. The running gear for adapting to complex terrains according to claim 1, characterized in that the dual output shaft transmission (3) further comprises a transmission case (314), and the input shaft (31), the first output shaft (38) and the second output shaft (39) are rotatably mounted in the transmission case (314) from top to bottom;

the input shaft (31) is connected with the output end of the clutch; the output ends of the first output shaft (38) and the second output shaft (39) are far away from the clutch (2) and extend out of the gearbox body (314);

a first driving gear (32), a second driving gear (33) and a third driving gear (34) which rotate synchronously are sequentially arranged on the input shaft (31) along the axial direction; the first driving gear (32) is arranged by the clutch (2);

a second synchronizer (312), a second driven gear (311) and a third driven gear (313) are arranged on the second output shaft (39); the second driven gear (311) and the third driven gear (313) are both sleeved on the second output shaft (39) in an empty way; the second synchronizer (312) is located between the second driven gear (311), the third driven gear (313) and is engageable with the second driven gear (311) or the third driven gear (313); the second driven gear (311) is meshed with the second driving gear (33); the third driven gear (313) is meshed with the first driving gear (32);

a first synchronizer (310) and a first driven gear (37) are arranged on the first output shaft (38); the first driven gear (37) is sleeved on the first output shaft (38) in an empty way; the first synchronizer (310) is engageable with the first driven gear (37); the first driven gear (37) is engaged with the third drive gear (34).

3. The running gear adapted to complex terrains of claim 2, wherein the output shaft transmission (3) further comprises a transmission cover (35), and the transmission cover (35) is fixed to the top of the transmission case (314) by fixing screws (36).

4. The walking mechanism adapted to complex terrains according to claim 1, wherein the walking mechanism (6) further comprises a walking arm (62), a swing lever (65) is hinged between the upper end of the walking arm (62) and the excavator suspension (9), and the lower end of the walking arm (62) is connected to a walking plate (63) through an elastic member (64).

5. The running gear for adapting to complex terrains according to claim 4, characterized in that the upper section of the running arm (62) is provided with a groove which is open towards the sides of the front wheel and the rear wheel; one side surface of the groove facing the excavator suspension (9) and one side surface of the groove far away from the excavator suspension (9) are provided with first mounting holes which are oppositely arranged;

one end of the swinging rod (65) is positioned in the groove, and a section of the swinging rod (65) positioned in the groove is provided with a second mounting hole matched with the first mounting hole;

a bolt (66) passes through a first mounting hole, a second mounting hole and the other first mounting hole to hinge the swing lever (65) to the traveling arm (62), and the bolt (66) is fixed to the traveling arm (62) through a first limit nut (67).

6. The walking mechanism for adapting to complex terrains according to claim 4, wherein a cylindrical rod (91) is arranged on the side surface of the excavator suspension (9) facing the walking arm (62), and the other end of the swinging rod (65) is sleeved on the cylindrical rod (91); and a second limiting nut (68) is arranged at the end part of the cylindrical rod (91).

7. Complex terrain adaptive walking mechanism according to claim 1, characterized in that the end of the first transmission shaft (7) remote from the dual output shaft transmission (3) fixes a first bevel gear (72); a second bevel gear is arranged on the rear drive axle (8); the first bevel gear (72) and the second bevel gear are engaged to form the first gear transmission mechanism.

8. The complex terrain following mechanism of claim 1, wherein the second gear transmission mechanism comprises a third bevel gear fixed to the second transmission shaft (4), a fourth bevel gear arranged to the drive shaft (5); the third bevel gear and the fourth bevel gear are meshed to form the second gear transmission mechanism.

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