A lubrication structure for a transmission assembly of an engineering vehicle

Abstract

The utility model discloses a lubrication structure for a transmission assembly of an engineering vehicle. In order to solve the problem that the lubrication structure of the existing transmission assembly of an engineering vehicle occupies an output shaft and the lubrication device on the transmission case does not work when the transfer case is not needed, the utility model adopts an arrangement of an oil pump (4) on the gearbox body (1). The top rod of the oil pump (4) extends into the gearbox body (1) and is in rolling contact with a fifth-speed driven gear (5) on the intermediate shaft, so that the oil inlet of the oil pump (4) is connected to the lower part of the inner cavity of the gearbox body (1), and the oil outlet of the oil pump (4) is connected to the oil injection port on the transmission case body (2).

Description

Technical Field

[0001] The utility model relates to a transmission assembly of an engineering vehicle, in particular to a lubrication structure of the transmission assembly of an engineering vehicle. Background Art

[0002] Chinese patent CN209262205U discloses a lubrication structure of a transmission assembly of an engineering vehicle, including a transfer case and a gearbox arranged in sequence, the transfer case including a transfer case body, the gearbox including a gearbox body, the lower part of the inner cavity of the transfer case body is interconnected with the lower part of the inner cavity of the gearbox body; also includes an air compressor connected to the transfer case, the housing of the air compressor has a lubricating oil inlet hole and a lubricating oil return hole, the bottom of the gearbox body or the transfer case body is provided with a lubricating oil pipe connected to the inner cavity of the corresponding case body, an oil pump is provided on the lubricating oil pipe, and the lubricating oil pipe is connected to the lubricating oil inlet hole, and the lubricating oil return hole is connected to the upper part of the inner cavity of the transfer case body; also includes a transmission case connected to the gearbox, the transmission case has a transmission case body, the lower part of the inner cavity of the transmission case body is interconnected with the lower part of the inner cavity of the gearbox body, and its oil pump is connected to an output shaft on the transfer case. Therefore, an output shaft is occupied, and when the transfer case is not needed, the lubrication device on the transmission case does not work. Summary of the invention

[0003] The utility model aims to provide a lubricating structure of a transmission assembly of an engineering vehicle which has a simple structure, does not occupy an output shaft and can lubricate a transmission box when a transfer box is not needed.

[0004] To achieve the above-mentioned purpose, the utility model discloses a lubrication structure of a transmission assembly of an engineering vehicle, comprising a transmission box and a gearbox arranged in sequence, the transmission box comprising a transmission case body, the gearbox comprising a gearbox body, the lower portion of an inner cavity of the transmission case body is communicated with the lower portion of an inner cavity of the gearbox body, an oil pump is arranged on the gearbox body, an oil pump push rod extends into the gearbox body and is in rolling contact with a fifth-speed driven gear on an intermediate shaft, so that an oil inlet of the oil pump is communicated with the lower portion of the inner cavity of the gearbox body, and an oil outlet of the oil pump is connected to an oil injection port on the transmission case body.

[0005] The oil inlet of the oil pump is also connected to the lower part of the inner cavity of the transmission case through an air filter.

[0006] The fifth-speed driven gear is arranged to have a T-shaped axial cross section, and the small end of the T-shaped fifth-speed driven gear is arranged as an eccentric wheel.

[0007] A lubrication structure for a transmission assembly of an engineering vehicle may also include a transmission box and a gearbox arranged in sequence, the transmission box including a transmission case body, the gearbox including a gearbox body, the lower portion of an inner cavity of the transmission case body is communicated with the lower portion of an inner cavity of the gearbox body, an oil pump is provided on the gearbox body, an oil pump push rod extends into the gearbox body and is in rolling contact with an eccentric sleeve on an intermediate shaft close to a fifth-speed driven gear, so that an oil inlet of the oil pump is communicated with the lower portion of an inner cavity of the gearbox body, and an oil outlet of the oil pump is connected to an oil injection port on the transmission case body.

[0008] After adopting this structure, since the oil pump is arranged on the transmission case, the oil pump push rod extends into the transmission case and rolls with the fifth-speed driven gear on the intermediate shaft, so that the oil inlet of the oil pump is connected with the lower part of the inner cavity of the transmission case, and the oil outlet of the oil pump is connected with the oil injection port on the transmission case. Thus, the purpose of not occupying an output shaft and being able to lubricate the transmission case when the transfer case is not needed is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0010] Attached Figure 1 The utility model is a three-dimensional schematic diagram of a lubrication structure of a transmission assembly of an engineering vehicle.

[0011] Attached Figure 2 Yes Figure 1 Schematic diagram of the left section.

[0012] Attached Figure 3 The utility model is a three-dimensional schematic diagram of a five-speed driven gear of a lubrication structure of an engineering vehicle transmission assembly.

[0013] Attached Figure 4 It is a three-dimensional schematic diagram of an eccentric sleeve of another implementation mode of a lubrication structure of a transmission assembly of an engineering vehicle according to the utility model.

[0014] In the figure: 1. Transmission body 2. Transmission case 3. Air filter 4. Oil pump 5. Fifth gear driven gear 6. Eccentric sleeve. DETAILED DESCRIPTION

[0015] Attached Figure 1 , Attachment Figure 2 and attached Figure 3The utility model is a lubrication structure of a transmission assembly of an engineering vehicle, comprising a transmission box and a gearbox arranged in sequence, wherein the transmission box comprises a transmission case body 2, and the gearbox comprises a gearbox body 1, wherein the lower part of the inner cavity of the transmission case body 2 is communicated with the lower part of the inner cavity of the gearbox body 1, and an oil pump 4 is arranged on the gearbox body 1, and the push rod of the oil pump 4 extends into the gearbox body 1 and is in rolling contact with a five-speed driven gear 5 on the intermediate shaft, so that the oil inlet of the oil pump 4 is communicated with the lower part of the inner cavity of the gearbox body 1, and the oil outlet of the oil pump 4 is connected with the oil injection port on the transmission case body 2; the oil inlet of the oil pump 4 is also communicated with the lower part of the inner cavity of the gearbox body 1 through an air filter 3; the five-speed driven gear 5 is arranged to have a T-shaped axial cross section, and the small end of the T-shaped five-speed driven gear 5 is arranged as an eccentric wheel.

[0016] Attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4 The lubrication structure of a transmission assembly of an engineering vehicle shown in the figure may also include a transmission box and a gearbox arranged in sequence, the transmission box includes a transmission case 2, the gearbox includes a gearbox case 1, the lower part of the inner cavity of the transmission case 2 is communicated with the lower part of the inner cavity of the gearbox case 1, an oil pump 4 is arranged on the gearbox case 1, the push rod of the oil pump 4 extends into the gearbox case 1 and is in rolling contact with the eccentric sleeve 6 on the intermediate shaft close to the fifth-speed driven gear 5, so that the oil inlet of the oil pump 4 is communicated with the lower part of the inner cavity of the gearbox case 1, and the oil outlet of the oil pump 4 is connected to the oil injection port on the transmission case 2.

Claims

1. A lubrication structure for a transmission assembly of an engineering vehicle, comprising a transmission box and a gearbox arranged in sequence, wherein the transmission box comprises a transmission box body, the gearbox comprises a gearbox body, and the lower part of the inner cavity of the transmission box body is communicated with the lower part of the inner cavity of the gearbox body, characterized in that: An oil pump (4) is provided on the gearbox body (1), and a push rod of the oil pump (4) extends into the gearbox body (1) and is in rolling contact with a fifth-speed driven gear (5) on the intermediate shaft, so that an oil inlet of the oil pump (4) is connected to a lower portion of an inner cavity of the gearbox body (1), and an oil outlet of the oil pump (4) is connected to an oil injection port on the transmission case (2).

2. The lubrication structure of a transmission assembly of an engineering vehicle according to claim 1, characterized in that: The oil inlet of the oil pump (4) is also connected to the lower part of the inner cavity of the transmission case (1) through the air filter (3).

3. The lubrication structure of a transmission assembly of an engineering vehicle according to claim 1, characterized in that: The fifth-speed driven gear (5) is arranged to have a T-shaped axial cross section, and the small end of the T-shaped fifth-speed driven gear (5) is arranged as an eccentric wheel.

4. A lubrication structure for a transmission assembly of an engineering vehicle, comprising a transmission box and a gearbox arranged in sequence, wherein the transmission box comprises a transmission box body, the gearbox comprises a gearbox body, and the lower part of the inner cavity of the transmission box body is connected to the lower part of the inner cavity of the gearbox body, characterized in that: An oil pump (4) is arranged on the gearbox body (1), and a push rod of the oil pump (4) extends into the gearbox body (1) and is in rolling contact with an eccentric sleeve (6) on the intermediate shaft close to the fifth-speed driven gear (5), so that an oil inlet of the oil pump (4) is connected to the lower part of the inner cavity of the gearbox body (1), and an oil outlet of the oil pump (4) is connected to an oil injection port on the transmission case (2).

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