CN103144498B - A kind of automatic lifting drive axle - Google Patents

Abstract

The invention belongs to the field of agricultural machinery, in particular to an automatic lifting drive axle. Including transmission and lifting device. The transmission device transmits power to the wheels of the vehicle to drive the vehicle to walk; the lifting device controls the height of the bridge body from the ground, thereby continuously controlling the ground clearance height of the vehicle drive axle. According to the working conditions and different growth periods of crops, the present invention can carry out a driving axle with adjustable ground gap, large adjustable range, continuous operation, convenient and reliable adjustment, and the driving axle has compact structure, large transmission ratio and large torque, which broadens the application of agricultural machinery range, improving the utilization rate of agricultural machinery.

Description

An automatic lifting drive axle

technical field

The invention belongs to the field of agricultural machinery, in particular to an automatic lifting drive axle.

Background technique

At present, tractors are mainly used for field work. However, tractors have certain defects in field work: the ground clearance is low, and high-stem crops are easily damaged during field work; generally, different application environments have different requirements for vehicle clearance. For example, weeding, fertilization, transplanting, and pesticide application, etc.; and different growth periods of crops have different requirements for vehicle clearance, so in order to be able to complete common routine operations and field management operations in the middle and late stage, different agricultural machinery needs to be configured, which not only requires a large investment Moreover, the utilization rate of equipment is low; Chinese invention patent ZL201110321470.4 discloses a high-gap vehicle drive axle, which is composed of a housing, an upper transmission box, a variable clearance box, and a lower transmission box; The clearance box can change the vehicle's ground clearance; however, the height adjustment is manual and discontinuous.

Contents of the invention

The technical problem to be solved by the present invention is a drive axle with continuously adjustable ground gap, large adjustable range, convenient and reliable adjustment according to operating conditions and different growth periods of crops, and this drive axle has compact structure, large transmission ratio and large torque, Broaden the scope of application of agricultural machinery and improve the utilization rate of agricultural machinery.

In order to realize the object of the present invention, the following technical solutions are adopted: an automatic lifting drive axle, including a transmission device and a lifting device. The transmission device transmits the power to the wheels of the vehicle to drive the vehicle to walk; the lifting device controls the height of the bridge body from the ground, thereby continuously controlling the ground clearance height of the vehicle drive axle.

The transmission device includes the bridge body, the bridge tube on both sides of the bridge body, the power output shaft in the bridge tube, the upper box on both sides of the bridge tube, the upper driving bevel gear in the upper box, the upper driven bevel gear, the spline Shaft, spline barrel, lower box on both sides of the bridge tube, lower driving bevel gear, lower driven bevel gear in the lower box, wheel half shaft and upper and lower bearings in the lower box; the bridge tube is fixed on the bridge body by bolts , the upper box and the bridge tube are connected by bolts, the bridge tube and the upper box are installed with a power output shaft, the upper driving bevel gear is fixed on the power output shaft, the upper driven bevel gear meshes with the upper driving bevel gear, and the upper bearing is installed on the power output shaft. On the output shaft and the upper box, the upper end of the spline shaft extends into the upper box and is fixedly connected with the upper driven bevel gear. The spline shaft and the spline barrel can be meshed for up and down telescopic transmission, and the lower end of the spline barrel also extends into the lower box. The body is fixedly connected with the lower driving bevel gear, the lower driving bevel gear meshes with the lower driven bevel gear, the lower driven bevel gear and the lower bearing are installed in the lower box, and the lower bearing is fixedly installed in the spline barrel and the lower box.

The lifting device includes an upper fixing sleeve connected with bolts of the upper box, a hydraulic cylinder cylinder, a hydraulic cylinder rod and a lower fixing sleeve connected with bolts of the lower box, the upper fixing sleeve is connected with the upper box by bolts, and the hydraulic pressure The upper end of the cylinder barrel is bolted to the upper fixed sleeve, the lower end is connected to the hydraulic cylinder rod, the lower end of the hydraulic cylinder rod is bolted to the lower fixed sleeve, the lower fixed sleeve is bolted to the half shaft sleeve, and the wheel half shaft is installed on the half shaft sleeve In the barrel, one end extending into the lower box is fixedly connected with the lower driven bevel gear, and the other end is connected with the wheel bolts.

In summary, the present invention can provide a drive axle with adjustable ground gap, large adjustable range, continuous operation, convenient and reliable adjustment according to operating conditions and different growth periods of crops, and this drive axle has a compact structure, a large transmission ratio and a large torque , broaden the scope of application of agricultural machinery, improve the utilization of agricultural machinery.

Description of drawings

Fig. 1 is a mechanism schematic diagram of the present invention;

In the accompanying drawings: 1. Hydraulic cylinder cylinder, 2. Upper fixing sleeve, 3. Upper box body, 4. Upper driving bevel gear, 5. Upper bearing, 6. Bridge tube, 7. Power output shaft, 8. Bridge body , 9, upper driven bevel gear, 10, hydraulic cylinder rod, 11, spline barrel, 12, spline shaft, 13, lower bearing, 14, lower box, 15, lower driving bevel gear, 16, lower driven Bevel gear, 17, half shaft sleeve, 18, wheel half shaft, 19, lower fixed cover, 20, wheel.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, an automatic lifting drive axle is composed of a transmission device and a lifting device. The transmission device transmits power to the wheels of the vehicle to drive the vehicle to walk; the lifting device controls the height of the bridge body from the ground, thereby continuously controlling Clearance height of the drive axle of the vehicle.

As shown in Figure 1, the transmission device includes a bridge body 8, a bridge tube 6 on both sides of the bridge body, a power output shaft 7 in the bridge tube, an upper box body 3 on both sides of the bridge tube body, and an upper box body in the upper box body 3. Meshing driving and driven bevel gears 4 and 9, spline barrel 11, lower case 14 on both sides of the bridge tube, lower meshing driving and driven bevel gears 15 and 16 in the lower case, wheel half shaft 18 in the lower case and upper and lower Bearings 5 and 13; the bridge tube 6 is bolted to the bridge body 8, the upper box body 3 is bolted to the bridge tube 6, the power output shaft 7 is installed in the bridge tube 6 and the upper box body 3, and the upper meshing driving and driven bevel gear 4 and 9 and the upper bearing 5, the upper end of the spline shaft 12 extends into the upper box 3 and is fixedly connected with the upper driven bevel gear 9, the spline shaft 12 meshes with the spline barrel 11 and can be telescopically driven up and down, and the spline barrel 11 The lower end also stretches into the lower box body 14 and is fixedly connected with the lower driving bevel gear 15. The lower meshing driving and driven bevel gears 15 and 16 and the lower bearing 13 are installed in the lower box body 14. One end of the wheel half shaft 18 and the lower driven cone The gear 16 is fixedly connected, and the other end is bolted to the wheel 20. The power transmitted from the bridge body 8 is transmitted to the upper driving bevel gear 4 through the power output shaft 7, and the upper driving bevel gear 4 and the upper driven bevel gear 9 are meshed to drive the flower. The key shaft 12 and the spline shaft 12 drive the spline barrel 11, the spline barrel 11 drives the lower driving bevel gear 15, the lower driving bevel gear 15 meshes with the lower driven gear 16, drives the wheel half shaft 18, and the wheel half shaft 18 drives the wheel 20 walks.

As shown in Figure 1, the lifting device includes an upper fixed sleeve 2 connected to the upper box body 3 by bolts, a hydraulic cylinder barrel 1, a hydraulic cylinder rod 10, and a lower fixed sleeve 19 connected by bolts to the lower box body 14; The fixing sleeve 2 is fixed on the upper box body 3, the upper end of the hydraulic cylinder barrel 1 is bolted to the upper fixing sleeve 2, the lower end is connected to the hydraulic cylinder rod 10, the hydraulic cylinder rod 10 is bolted to the lower fixing sleeve 19, and the engine drives the hydraulic pump. The hydraulic pump drives the telescopic movement of the hydraulic cylinder rod 10 fixed on the lower fixed sleeve 19, and pushes the drive axle to perform up and down translation, thereby continuously adjusting the ground clearance height of the drive axle.

The above-mentioned embodiments have shown and described the basic principles, main features and advantages of the present invention, the purpose of which is to enable those familiar with this technology to understand and implement the content of the utility model, and not to limit the protection of the utility model range, all equivalent changes or modifications made according to the spirit of the utility model shall fall within the protection scope of the utility model.

Claims (1)

1. An automatic lifting drive axle, the drive axle includes a transmission device and a lifting device, the transmission device transmits power to the wheels of the vehicle to drive the vehicle to walk; the lifting device controls the height of the bridge body from the ground, thereby continuously controlling the driving of the vehicle The ground clearance height of the bridge; the transmission device includes the bridge body, the bridge tube on both sides of the bridge body, the power output shaft in the bridge tube, the upper box on both sides of the bridge tube, the upper driving bevel gear in the upper box, the upper slave Driven bevel gear, spline shaft, spline barrel, lower box on both sides of the bridge tube, lower driving bevel gear in the lower box, lower driven bevel gear, wheel half shaft and upper and lower bearings in the lower box; the bridge tube passes through The bolts are fixed on the bridge body, the upper box body and the bridge tube are connected by bolts, the power output shaft is installed in the bridge tube and the upper box body, the upper driving bevel gear is fixedly installed on the power output shaft, and the upper driven bevel gear meshes with the upper driving bevel gear , the upper bearing is installed on the power output shaft and the upper box. The upper end of the spline shaft extends into the upper box and is fixedly connected with the upper driven bevel gear. Also extend into the lower box and be fixedly connected with the lower driving bevel gear, the lower driving bevel gear meshes with the lower driven bevel gear, the lower driven bevel gear and the lower bearing are installed in the lower box, and the lower bearing is fixedly installed on the spline barrel and In the lower box; the lifting device includes a hydraulic cylinder cylinder and a hydraulic cylinder rod, and it is characterized in that: the lifting device also includes an upper fixing sleeve connected with the upper box bolts, and a lower fixing sleeve connected with the lower box bolts The upper fixed sleeve is connected to the upper box by bolts, the upper end of the hydraulic cylinder cylinder is connected to the upper fixed sleeve by bolts, the lower end is connected to the hydraulic cylinder rod, the lower end of the hydraulic cylinder rod is connected to the lower fixed sleeve by bolts, and the lower fixed sleeve is connected by bolts On the half-shaft sleeve, the wheel half-shaft is installed in the half-shaft sleeve, and one end extending into the lower box is fixedly connected with the lower driven bevel gear, and the other end is connected with the wheel bolt; the lifting device includes a The upper fixing sleeve, hydraulic cylinder cylinder, hydraulic cylinder rod and the lower fixing sleeve connected by bolts to the lower box body are connected by bolts; the upper fixing sleeve is fixed on the upper box body, and the upper end of the cylinder barrel of the hydraulic cylinder is connected by bolts to the upper fixing sleeve , the lower end is connected with the hydraulic cylinder rod, the hydraulic cylinder rod is connected with the bolts of the lower fixed sleeve, the engine drives the hydraulic pump, and the hydraulic pump drives the telescopic movement of the hydraulic cylinder rod fixed on the lower fixed sleeve, pushing the drive axle to move up and down, thereby continuously adjusting the drive axle the ground clearance height.