CN205013592U - Small -size pair of power take off formula four speed gear shift transaxle - Google Patents

Abstract

The utility model relates to a small double power output type four-speed transmission drive axle, which belongs to the technical field of agricultural vehicle gearboxes. The utility model comprises a gearbox case, in which a differential, a power input shaft, a power output shaft of a walking wheel and a power output shaft of a working device are installed; the power input shaft is respectively driven by a power output transmission mechanism and a variable speed transmission mechanism. The power output shaft of the working device and the power output shaft of the road wheel rotate; the speed change transmission mechanism includes a two-shaft assembly, a three-shaft assembly, a clutch assembly and a differential, the power input shaft is connected to the clutch assembly, and the power input shaft is connected to the two shafts in turn Assemblies, three-shaft assemblies, and differential gears, the two-shaft assembly is equipped with gears with different transmission ratios from the dual gears on the power input shaft, and the three-shaft assembly is connected with reverse gear and three-shaft first gear Gears, three-axis transmission gears. In the utility model, one shaft is used for operation output, and the other output shaft is used for gear shift output, so that the number of shafts and gears is reduced, the operation is simple and reasonable, and the structure is simplified.

Description

Small dual PTO four-speed transaxle

technical field

The utility model belongs to the technical field of gearboxes for agricultural vehicles, and in particular relates to a small double power output four-speed transmission drive axle.

Background technique

At present, small rotary tillers, ditchers, fertilizer spreaders and farm management machinery used in the hilly areas of southern my country usually use two sets of gearboxes and one set of travel gearboxes to transmit the power of the engine to the power output shaft of the road wheels. , the other set is the working device gearbox, which either obtains power from the engine, or from the power output shaft of the road wheel, or from a certain shaft of the travel gearbox, and then outputs the power to the power output shaft of the working device. The two sets of gearboxes are similar in structure and have nearly the same functions. Although the versatility is improved to a certain extent, the parts are usually complex in structure, large in size and redundant in function, and the stop of the general working device will inevitably lead to the simultaneous stop of the walking power output shaft. It does not meet the operating specifications and the operation is complicated.

Utility model content

In view of the above-mentioned defects, the purpose of this utility model is to provide a practical and simple structure dual power output type four-speed transaxle, which can output the main power used for driving and the power used for operating devices, and at the same time Integrates transmission and drive axle in one.

For this reason, the utility model adopts the following technical solutions: a small-sized double power output type four-speed transaxle, including a gearbox case, a differential, a power input shaft, a power output shaft of a road wheel and a working wheel are installed in the gearbox case. Device power output shaft;

A shift seat is fixed on the gearbox case, the shift rod is inserted into the shift seat, the shift push rod is hinged on the shift rod, one end of the shift rod is hinged on the shift push rod, and the other end is Hinged on the shift seat, the shift seat is formed with a counterbore, a steel ball and a spring are set on the counterbore, one end of the spring is placed at the bottom of the counterbore, the steel ball is in contact with the shift seat, and the shift lever is fixed on the shift lever , realize the shifting of the power output shaft of the road wheel through the lever;

The power input shaft drives the power output shaft of the working device and the power output shaft of the road wheel to rotate through the power output transmission mechanism and the speed change transmission mechanism respectively;

The speed change transmission mechanism includes a two-shaft assembly, a three-shaft assembly, a clutch assembly and a differential, the power input shaft is connected to the clutch assembly, and the power input shaft is connected to the two-shaft assembly, the three-shaft assembly in turn. Shaft assembly and differential, the two-shaft assembly is provided with gear gears with different transmission ratios from the duplex gear on the power input shaft, and the three-shaft assembly is connected with an inverted gear, three-axis first gear, three-axis transmission gear.

As a supplement and improvement to the above technical solution, the utility model also includes the following technical features.

The differential includes a differential housing, and a cross shaft is arranged in the differential housing, and the cross shaft is connected to a side gear through a differential gear, and the side gear is connected to the power output shaft of the road wheel On the two half shafts of the differential, the differential is connected to the three-axis assembly through the large gear on the differential.

One end of the triaxial assembly is connected with a hand brake component.

The two-axis assembly and the three-axis assembly are provided with a synchronizer assembly, through the synchronizer assembly, the speeds of two close gears can be smoothly transitioned to the same speed, so that the walking operation equipment can be shifted at the same speed. The time is more stable and the power conversion is faster.

A working intermediate shaft is arranged between the power input shaft and the power output shaft of the working device, thereby increasing the power transmitted by the power input shaft.

The gearbox casing is formed by welding steel plates, and the holes on the gearbox casing are punched and formed by wire cutting.

The utility model can achieve the following beneficial effects: the structure of the utility model is designed as a double power output agricultural machinery gearbox, one shaft is used for operation output, the output speed does not need to be changed, and the speed of the operation device is kept stable, and the other output shaft is used for It is used as a gear shift output to the drive axle, requiring three forward gears and a fourth gear output backward, which reduces the number of shafts and gears while ensuring the function, and achieves the situation of not changing the driving power through the coupling and separation of the clutch. The operation of the power output of the working device is simple and reasonable, the structure of the gearbox is simplified, the speed change and the drive are integrated, the structure is compact, the strength is increased, the power transmission route is shortened, and the output is reliable.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the transmission structure of the utility model.

Fig. 3 is a schematic diagram of the operation shifting structure of the utility model.

detailed description

Specific embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

Embodiment: As shown in Figures 1 to 3, the utility model includes a gearbox case 1 in which a differential 7, a power input shaft 2, a power output shaft 3 of a road wheel and a working device power Output shaft 4; a shift seat 12 is fixed on the gearbox case 1, a shift lever 11 is inserted into the shift seat 12, a shift push rod 16 is hinged on the shift lever 11, and one end of the shift lever 11 is hinged on The upper end of the shift push rod 16 and the other end are hinged on the shift seat 12. A counterbore is formed on the shift seat 12. A steel ball 14 and a spring 15 are arranged on the counterbore. One end of the spring 15 is placed at the bottom of the counterbore. The above-mentioned shift seat 12, the shift rod 13 is fixed on the shift rod 11, and the shifting of the power output shaft 3 of the road wheel is realized through the shift rod 13; the power input shaft 2 is driven by the power output transmission mechanism and the speed change transmission mechanism respectively. The power output shaft 4 of the device and the power output shaft 3 of the road wheel rotate; the speed change transmission mechanism includes a two-axis assembly 5, a three-axis assembly 6, a clutch assembly 8 and a differential 7, and the power input shaft 2 is connected to the clutch assembly 8, The power input shaft 2 is sequentially connected to the two-axis assembly 5, the three-axis assembly 6, and the differential 7. The two-axis assembly 5 is provided with a gear gear with a different transmission ratio from the duplex gear on the power input shaft 2. The three-axis assembly 6 is connected with a reverse gear, a three-axis first gear, and a three-axis transmission gear.

Further, the differential 7 includes a differential housing, and a cross shaft is arranged in the differential housing, and the cross shaft is connected to a side gear through a differential gear, and the side gear is connected to the power output shaft 3 of the road wheel. On the two axle shafts, the differential 7 is connected to the triaxial assembly 6 through the gearwheel on the differential 7 .

Further, a hand brake component 9 is connected to one end of the triaxial assembly 6 .

Preferably, the two-shaft assembly 5 and the three-shaft assembly 6 are provided with a synchronizer assembly, through the synchronizer assembly, two close gear speeds can be smoothly transitioned to the same speed, so that the combine harvester It is more stable when shifting gears and the power conversion is faster.

Further, a working intermediate shaft 10 is provided between the power input shaft 2 and the power output shaft 4 of the working device, so as to increase the power transmitted by the power input shaft 2 .

Further preferably, the gearbox casing 1 is formed by welding steel plates, and the holes on the gearbox casing 1 are punched and formed by wire cutting.

The gearbox of the present utility model is designed as a stepped gear gearbox and is driven by spur gears. The power is output by the diesel engine and input to the gearbox through the belt transmission, and part of it is shifted through the various gears in the box, and finally output by the driving wheel and the operation output. Since the utility model requires the realization of multi-block speed change, according to the basic principle of the gear box, two sliding gears and a double-linked sliding gear are set on the input shaft, and the sliding gear of the toggle lever can be connected to the two shafts respectively. The three fixed teeth on the gear and the fixed gear on the intermediate shaft of the work output shaft cooperate to obtain different transmission ratios. When the sliding gear of the input shaft slides and meshes with the gear on the reverse gear shaft, the reverse gear shaft acts as an intermediate shaft to drive the two shafts, that is, the rotation direction of the two shaft gears and all subsequent gears changes, so that the driving wheel reverses to achieve backward .

The utility model adapts the structure into a double power output agricultural machinery gearbox. One shaft is used for operation output, and the output speed does not need to be changed. The gear output reduces the number of shafts and gears while ensuring the function, and realizes the power output of operating the working device without changing the walking power through the coupling and separation of the clutch. The operation is simple and reasonable, and the structure of the gearbox is simplified.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (6)

1. small double-power output type four-speed gear shift ransaxle, comprise gear box (1), it is characterized in that: differential mechanism (7), power input shaft (2), road wheel pto＝power take-off (3) and equipment pto＝power take-off (4) are installed in described gear box (1);

Described gear box (1) is fixed with gearshift seat (12), gear level (11) sleeve is in gearshift seat (12), gearshift push rod (16) is hinged on gear level (11), gear level (11) one end is hinged in gearshift push rod (16), the other end is hinged in gearshift seat (12), gearshift seat (12) forms counterbore, counterbore sets gradually steel ball (14) and spring (15), spring (15) one end is placed in counterbore base, steel ball contacts at described gearshift seat (12), driving lever (13) is fixed on gear level (11), the gearshift to road wheel pto＝power take-off (3) is realized by driving lever (13),

Equipment pto＝power take-off (4) described in described power input shaft (2) drives respectively by power output transmission mechanism, variable transmission mechanism and described road wheel pto＝power take-off (3) rotate;

Described variable transmission mechanism comprises two axle assemblies (5), three axle assemblies (6), clutch assembly (8) and described differential mechanism (7), clutch assembly (8) described in described power input shaft (2) connects, power input shaft (2) connects two axle assemblies (5) successively, three axle assemblies (6), differential mechanism (7), described two axle assemblies (5) are provided with the shifting gear forming different drive ratios with the duplicate gear on described power input shaft (2), described three axle assemblies (6) are connected with reverse gear, three one grade, axle gears, three shaft transmission gears.

2. small double-power output type four-speed gear shift ransaxle according to claim 1, it is characterized in that: described differential mechanism (7) includes differential casing, cross axle is provided with in differential casing, cross axle is connected with differential gear by differential gear, differential gear is connected on two semiaxis of described road wheel pto＝power take-off (3), three axle assemblies (6) described in differential mechanism (7) is connected by the gearwheel on differential mechanism (7).

3. small double-power output type four-speed gear shift ransaxle according to claim 2, is characterized in that: described three axle assemblies (6) one end is connected with hand brake parts (9).

4. small double-power output type four-speed gear shift ransaxle according to claim 3, is characterized in that: described two axle assemblies (5) and three axle assemblies (6) are provided with synchronizer assembly.

5. small double-power output type four-speed gear shift ransaxle according to claim 4, is characterized in that: be provided with operation jack shaft (10) between described power input shaft (2) and equipment pto＝power take-off (4).

6. small double-power output type four-speed gear shift ransaxle according to claim 5, is characterized in that: described gear box (1) is shaping by Plate Welding, and the hole on gear box (1) is by Linear cut drilling forming.