Wheel digging upper transmission case with brake device

Abstract

The utility model discloses a wheel digger upper transmission case with a brake device, and aims to solve the problems that an oil pump of the existing wheel digger upper transmission case with the brake device is positioned outside a case body, the oil pump is easy to damage, a lubricating system cannot work, and the service life of equipment is influenced, and the wheel digger upper transmission case is characterized in that the oil pump (8) is arranged in the case body (2); an ejector rod on the oil pump (8) is in contact with the surface of the eccentric shaft (7) on the output shaft (4), an oil outlet of the oil pump (8) is communicated with an oil inlet of the brake device (1), and an oil inlet of the oil pump (8) is communicated with the oil groove.

Description

Technical Field

[0001] The utility model relates to a transmission device, in particular to a wheel excavator transmission box with a brake device, which is composed of a box body, a flange, an input shaft, an input gear, an output shaft, an output gear and a brake device. Background Art

[0002] Chinese patent CN207906410U discloses an upper transmission box of an excavator, including a housing, a power input assembly and a power output assembly, the power output assembly including an output shaft, a lower bearing and a driven gear, the lower bearing is sleeved on the driven gear, the power output assembly also includes an oil seal assembly, a chip cover and an oil seal cover, the chip cover and the oil seal assembly are sequentially arranged directly below the driven gear and the lower bearing, an axial hole is opened on the oil seal cover, the axial hole and the output shaft are located on the same axis, one end of the output shaft is sleeved on the oil seal cover through the axial hole, and the oil seal cover is connected to the housing. The lower part is fixed together; the oil seal cover has an inner recess, an oil deflector ring is convexly provided on the bottom wall of the inner recess, the chip protection cover is covered on the oil deflector ring, and an oil seal cavity is formed between the outer peripheral wall of the output shaft and the oil deflector ring, and the oil seal assembly is embedded in the oil seal cavity; a concave cavity is formed between the peripheral wall of the inner recess of the oil seal cover and the outer peripheral wall of the oil deflector ring, an oil storage tank connected to the concave cavity is provided inside the shell, the oil storage tank is connected to an external lubrication system, the external lubrication system includes an oil tank for storing lubricating oil, the oil tank is located outside the shell, and the oil level of the oil storage tank is lower than the horizontal height of the upper end surface of the oil deflector ring. The external lubrication system also includes an oil return pipe, an oil inlet pipe, and an oil pump for extracting lubricating oil. The oil pump is installed on the pipeline of the oil inlet pipe. One end of the oil inlet pipe is provided with a first oil pipe joint, and the other end is provided with a second oil pipe joint. The first oil pipe joint is connected to the bottom of the oil tank, and the second oil pipe joint is connected to the upper shell of the shell; one end of the return pipe is provided with a third oil pipe joint, and the other end of the return pipe is provided with a fourth oil pipe joint. The third oil pipe joint is fixed to the bottom of the shell, and the return pipe is connected to the oil storage tank through the third oil pipe joint. The other end of the return pipe is connected to the top of the oil tank through the fourth oil pipe joint. The installation height of the third oil pipe joint is lower than the horizontal height of the upper end face of the oil retaining ring, and the installation height of the fourth oil pipe joint is lower than the installation height of the third oil pipe joint; the oil pump is fixed to the top cover by bolts, that is, fixed to the shell, and the oil pump is located outside the shell. Therefore, the oil pump is easily damaged during operation, causing the lubrication system to fail to work and affecting the life of the equipment. Summary of the invention

[0003] The utility model aims to provide a wheel-mounted transmission box with a brake device, in which the oil pump is not easily impacted and can independently deliver hydraulic oil to the brake device.

[0004] To achieve the above-mentioned purpose, the utility model discloses a wheel excavator transmission box with a brake device, which is composed of a box body, a flange, an input shaft, an input gear, an output shaft, an output gear and a brake device. The input shaft is horizontally arranged in the middle of the box body through a bearing seat, and one end of the input shaft arranged in the box body is transmission-connected to the output shaft vertically installed in the box body through the input gear and the output gear. The upper end of the output shaft outside the box body is connected with the brake device, and the lower end of the output shaft outside the box body is installed with a flange. An oil pump is arranged in the box body, so that the push rod on the oil pump contacts the surface of the eccentric shaft on the output shaft, and the oil outlet of the oil pump is connected with the oil inlet of the brake device, and the oil inlet of the oil pump is connected with the oil tank.

[0005] The oil pump is arranged in the box body through an oil pump seat.

[0006] A port is arranged on the middle surface of the box body for facilitating the placement of the oil pump in the box body, and a plurality of screw holes are evenly distributed around the port for facilitating the fixing of the oil pump seat.

[0007] After adopting this structure, since the oil pump is arranged in the box body, the push rod on the oil pump contacts the surface of the eccentric shaft on the output shaft, and the oil outlet of the oil pump is connected with the oil inlet of the brake device, and the oil inlet of the oil pump is connected with the oil tank. Thus, the oil pump is not easily hit and the purpose of delivering hydraulic oil to the brake device alone is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0009] Attached Figure 1 The utility model is a main cross-sectional schematic diagram of a wheel excavator upper transmission box with a brake device.

[0010] Attached Figure 2 The utility model is a top sectional schematic diagram of a wheel excavator upper transmission box with a brake device.

[0011] In the figure: 1. Brake device 2. Case 3. Input gear 4. Output shaft 5. Output gear 6. Flange 7. Eccentric shaft 8. Oil pump 9. Oil pump seat. DETAILED DESCRIPTION

[0012] Attached Figure 1 , Attachment Figure 2The utility model is shown as a wheel excavator transmission box with a brake device, which consists of a box body 2, a flange 6, an input shaft, an input gear 3, an output shaft 4, an output gear 5 and a brake device 1. The input shaft is horizontally arranged in the middle of the box body 2 through a bearing seat, and one end of the input shaft arranged in the box body 2 is transmission-connected with the output shaft 4 vertically installed in the box body 2 through the input gear 3 and the output gear 5. The upper end of the output shaft 4 outside the box body 2 is connected with the brake device 1, and the lower end of the output shaft 4 outside the box body 2 is installed with a flange 6. An oil pump 8 is arranged in the box body 2, so that the push rod on the oil pump 8 contacts the surface of the eccentric shaft 7 on the output shaft 4, and the oil outlet of the oil pump 8 is connected with the oil inlet of the brake device 1, and the oil inlet of the oil pump 8 is connected with the oil tank; the oil pump 8 is arranged in the box body 2 through an oil pump seat 9; a port is arranged on the middle surface of the box body 2 for facilitating the placement of the oil pump 8 in the box body 2, and a plurality of screw holes are evenly distributed around the port for facilitating the fixing of the oil pump seat 9.

Claims

1. A wheel excavator transmission box with a brake device, which consists of a box body, a flange, an input shaft, an input gear, an output shaft, an output gear and a brake device. The input shaft is horizontally arranged in the middle of the box body through a bearing seat, and one end of the input shaft arranged in the box body is connected to the output shaft vertically installed in the box body through the input gear and the output gear. The upper end of the output shaft outside the box body is connected to the brake device, and the lower end of the output shaft outside the box body is installed with a flange, which is characterized in that: An oil pump (8) is arranged in the housing (2), so that a push rod on the oil pump (8) contacts the surface of an eccentric shaft (7) on the output shaft (4), and an oil outlet of the oil pump (8) is connected to an oil inlet of the brake device (1), and the oil inlet of the oil pump (8) is connected to an oil tank.

2. A wheel excavator upper transmission box with a brake device according to claim 1, characterized in that: The oil pump (8) is arranged in the box body (2) via an oil pump seat (9).

3. A wheel excavator upper transmission box with a brake device according to claim 1, characterized in that: An opening is provided on the middle surface of the box body (2) for facilitating the placement of the oil pump (8) in the box body (2), and a plurality of screw holes are evenly distributed around the opening for facilitating the fixing of the oil pump seat (9).

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