CN-224214654-U - Front shell closed large tonnage hydraulic torque converter

Abstract

The utility model belongs to the technical field of hydraulic torque converters, and relates to a front shell closed type large-tonnage hydraulic torque converter which comprises a front shell, wherein the front shell is sequentially connected with a middle section and a gear box, a pump hub is connected in the middle section through a turbine shaft, the pump hub is connected with a torque converter core, the torque converter core is connected with an input shaft, the input shaft is connected with a disc, and a bearing and a sealing assembly are arranged between the input shaft and the front shell. Aiming at the problems of the existing large-tonnage hydraulic torque converter, the partition plate is added between the hydraulic torque converter core and the engine, a framework oil seal with smaller size can be adopted, the relative linear speed of a sealing lip of the framework oil seal is reduced, a double oil seal structure is adopted, the service life of the framework oil seal is prolonged, and when oil leakage occurs in the framework oil seal, the framework oil seal can be replaced without disassembling the hydraulic torque converter core, so that the hydraulic torque converter is convenient to maintain.

Inventors

• WANG BIN
• MA XUQIANG
• ZHENG XUAN
• MA HAO
• YANG JUNFEI

Assignees

• 山东华首重工有限公司

Dates

Publication Date

20260508

Application Date

20250530

Claims (6)

1. 1. A front shell closed type large-tonnage hydraulic torque converter is characterized by comprising a front shell (4), wherein the front shell (4) is sequentially connected with a middle section (9) and a gear box (10), a pump hub (6) is connected in the middle section (9) through a turbine shaft (11), the pump hub (6) is connected with a torque converter core (5), the torque converter core (5) is connected with an input shaft (13), the input shaft (13) is connected with a disc (8), and a bearing (3) and a sealing assembly are arranged between the input shaft (13) and the front shell (4).
2. 2. The front shell closed type large tonnage hydraulic torque converter of claim 1, wherein an input flange (1) is fixedly connected to the end part of the input shaft (13), and the input flange (1) is connected with the disc (8) through a positioning shaft head (12).
3. 3. The front housing closed type large tonnage hydraulic torque converter according to claim 2, wherein the positioning shaft head (12) is provided with an elastic plate (14), and the disc (8) is connected to the elastic plate (14).
4. 4. The front housing closed type large tonnage hydraulic torque converter according to claim 3, wherein the seal assembly comprises a skeleton oil seal (2) arranged between the front housing (4) and the input flange (1).
5. 5. The front shell closed type large tonnage hydraulic torque converter according to claim 4, wherein two skeleton oil seals (2) are arranged.
6. 6. The front housing closed type large tonnage hydraulic torque converter according to claim 5, wherein a baffle plate (7) is arranged between the pump hub (6) and the gear box (10).

Description

Front shell closed large tonnage hydraulic torque converter Technical Field The utility model belongs to the technical field of hydraulic torque converters, and relates to a front shell closed type large-tonnage hydraulic torque converter. Background A torque converter is an element that transfers power by means of high-speed movement of a liquid. Its working characteristics are that the rotational speed and torque of input end are basically constant, or the change is not large although there is a change. The rotation speed and torque of the output end can be larger than, equal to or smaller than those of the input end, and the output rotation speed and the output torque can be automatically and continuously adjusted and changed according to the load of the driven working machine. Because of its continuously variable and torque-converting functions, the torque converter is widely used as a transmission between various power machines and working machines. At present, in order to improve the dynamic performance and climbing capacity of large-scale equipment, a high-power engine is generally selected, but the existing hydraulic torque converter is small in capacity and limited in power absorption capacity, so that only the power of the engine is increased, and the dynamic performance of the scraper cannot be effectively improved. The prior Chinese patent with the publication number of CN217898695U discloses a modular hydraulic torque converter which comprises a transition disc, wherein a gear box is detachably arranged on one side of the transition disc, a middle section is detachably arranged on the other side of the transition disc, one end, far away from the transition disc, of the middle section is provided with a flywheel shell connecting part, and a torque converter core assembly is arranged in the middle section. The prior art has the following technical defects: the existing hydraulic torque converter is divided by a middle partition plate between a front shell and a gear box, a framework oil seal is arranged at the partition plate of the front shell, and a torque converter core is positioned between the partition plate of the front shell and an engine. Because the large-tonnage hydraulic torque converter core is larger in size, the outer circle of the pump hub is also larger in size, and therefore, the framework oil seal at the front shell partition plate is larger in size. When the hydraulic torque converter core rotates at a high speed, the relative linear speed of the framework oil seal lip is high, oil leakage of the framework oil seal is easy to occur, the oil seal is difficult to replace, and the oil seal can be replaced only by disassembling the torque converter core. Disclosure of utility model The utility model aims to solve the technical problems of overcoming the defects of the prior art and providing a front shell closed type large-tonnage hydraulic torque converter. The utility model relates to a front shell closed type large-tonnage hydraulic torque converter, which comprises a front shell, wherein the front shell is sequentially connected with a middle section and a gear box, a pump hub is connected in the middle section through a turbine shaft, the pump hub is connected with a torque converter core, the torque converter core is connected with an input shaft, the input shaft is connected with a disc, and a bearing and sealing assembly is arranged between the input shaft and the front shell. The end part of the input shaft is fixedly connected with an input flange, and the input flange is connected with the disc through a positioning shaft head. The positioning shaft head is provided with an elastic plate, and the disc is connected to the elastic plate. The sealing assembly comprises a framework oil seal arranged between the front shell and the input flange, and the relative linear speed of the sealing lip of the framework oil seal is reduced by adopting the framework oil seal with smaller size. The two skeleton oil seals are arranged, a double oil seal structure is adopted, the service life of the skeleton oil seal is prolonged, and when oil leakage occurs in the skeleton oil seal, the skeleton oil seal can be replaced without disassembling a hydraulic torque converter movement, so that the maintenance is convenient. And a baffle plate is arranged between the pump hub and the gear box. Compared with the prior art, the utility model has the beneficial effects that: Aiming at the problems of the existing large-tonnage hydraulic torque converter, the partition plate is added between the hydraulic torque converter core and the engine, a framework oil seal with smaller size can be adopted, the relative linear speed of a sealing lip of the framework oil seal is reduced, a double oil seal structure is adopted, the service life of the framework oil seal is prolonged, and when oil leakage occurs in the framework oil seal, the framework oil seal can be replaced without disassembling the hydraulic