CN216742781U - Double-support structure for three-shaft direct-blocking-shaft gear of gearbox of 5-ton wheel loader - Google Patents
Double-support structure for three-shaft direct-blocking-shaft gear of gearbox of 5-ton wheel loader Download PDFInfo
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- CN216742781U CN216742781U CN202123227523.4U CN202123227523U CN216742781U CN 216742781 U CN216742781 U CN 216742781U CN 202123227523 U CN202123227523 U CN 202123227523U CN 216742781 U CN216742781 U CN 216742781U
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Abstract
The utility model discloses a double-support structure of a three-shaft direct-blocking shaft gear of a gearbox of a 5-ton wheel loader, wherein one end of the direct-blocking shaft gear is connected with a sun gear spline to realize power input, the other end of the direct-blocking shaft gear is assembled and fixed on an oil cylinder through an end bearing, a friction plate assembly is connected with the direct-blocking shaft gear through a spline, and a piston is arranged in the oil cylinder and positioned on the right side of the friction plate assembly; the direct blocking connecting disc is arranged on the direct blocking shaft gear, the direct blocking connecting disc is provided with an installation inner hole of the middle bearing, the direct blocking shaft gear is provided with an installation position of the middle bearing, and the middle bearing and the end bearing form a double-support structure of the direct blocking shaft gear. The utility model discloses compact structure, life are high, solve among the prior art loader gearbox triaxial assembly because of directly keeping off a single bearing structure of axle gear and lead to friction disc abnormal wear, tip bearing damage, the dead problem of triaxial card.
Description
Technical Field
The utility model relates to a wheel loader gearbox technical field, concretely relates to 5 tons of wheel loader gearbox triaxial directly keep off a double-support structure of shaft gear.
Background
At present, the domestic loader mainly comprises a wheel loader. The gearbox of the 5-ton wheel loader adopts a planetary gear type gearbox assembly, has the characteristics of good maintainability and high reliability, and is always highly favored by the market. The three-shaft assembly of the gearbox assembly generally adopts a combined structure of a direct-blocking shaft gear, a friction plate assembly, an oil cylinder and a piston, and during gear shifting operation, oil enters the oil cylinder, gear pressure is quickly built, the piston is pushed, the friction plate assembly is tightly pressed, and therefore torque transmission is achieved. One end of the direct gear shaft gear is connected with the spline of the sun gear to realize the input of power; the other end is assembled and fixed on the oil cylinder body through a bearing, and the friction plate is connected with the direct baffle shaft gear through a spline. Because the direct baffle shaft gear is only assembled and fixed with the oil cylinder body through the bearing and is of a cantilever single-support structure, the requirement on the end bearing is high, meanwhile, the direct baffle shaft gear is easily influenced by manufacturing errors, the verticality between the direct baffle shaft gear and the piston cannot be ensured, a friction plate matched with the direct baffle shaft gear is also influenced, the parallelism between the friction plate and the piston is poor, the friction plate is twisted when the piston presses the friction plate, and finally early faults such as abnormal abrasion of the friction plate, damage of the end bearing, clamping of a triaxial assembly and the like occur.
Disclosure of Invention
The utility model aims at overcoming above-mentioned defect, providing a 5 tons of wheel loader gearbox triaxial that compact structure, life are high directly keeps off a gear double bracing structure, solve among the prior art loader gearbox triaxial assembly because of directly keeping off a gear single bracing structure and lead to friction disc abnormal wear, tip bearing to damage, the dead problem of triaxial card.
In order to achieve the above purpose, the utility model discloses 5 tons of wheel loader gearboxes triaxial directly keep off a double-support structure of axle gear including directly keeping off axle gear 1, directly keeping off connection pad 2, center bearing 3, friction disc subassembly 4, piston 5, end bearing 6 and hydro-cylinder 7, one end of directly keeping off axle gear 1 is connected with the sun gear spline in order to realize the input of power, and the other end is fixed on hydro-cylinder 7 through end bearing 6 assembly, adopt the spline connection between friction disc subassembly 4 and the directly keeping off axle gear 1, piston 5 is established in hydro-cylinder 7 and is located the right of friction disc subassembly 4; the direct blocking connecting disc 2 is arranged on the direct blocking shaft gear 1, the direct blocking connecting disc 2 is provided with an installation inner hole of the middle bearing 3, the direct blocking shaft gear 1 is provided with an installation position of the middle bearing 3, and the middle bearing 3 and the end bearing 6 form a double-support structure of the direct blocking shaft gear 1.
When the gear is not shifted, the direct gear shaft gear 1 is always connected with the sun gear, and the direct gear shaft gear 1 rotates at a high speed under the support of the middle bearing 3 and the end bearing 6; when shifting, hydraulic oil enters into hydro-cylinder 7, promotes directly to keep off piston 5 and moves forward, compresses tightly 4 in-processes of friction disc subassembly at piston 5, and the external splines of directly keeping off shaft gear 1 play the guide effect, and the straightness that hangs down of the assurance that double bracing structure can be better keeps off shaft gear 1 and piston 5, consequently can avoid compressing tightly the phenomenon that the back friction disc subassembly distorts to appear.
Above-mentioned 5 ton wheel loader gearbox triaxial directly keeps off a double-support structure of shaft gear on the basis of current loader gearbox triaxial assembly structure, through increasing the installation position that directly keeps off connection pad 2 and add well bearing 3 on directly keeping off shaft gear 1, realizes directly keeping off the double-support structure of shaft gear 1, has following technical characterstic and beneficial effect:
1. after the direct blocking shaft gear adopts a double-support structure, the bearing pressure of a single-support bearing in the prior art can be reduced, and the bearing pressure is shared by bearings at two ends, so that the service life of the bearing is prolonged, and the fault of the bearing is reduced.
2. After the direct blocking shaft gear adopts a double-support structure, the problem that the perpendicularity between the direct blocking shaft gear and the piston is difficult to ensure due to manufacturing errors can be effectively avoided, and therefore the problem that the friction plate assembly is distorted to cause abnormal abrasion of the friction plate after the piston is tightly pressed is effectively prevented.
By adopting the double-support structure for the three-shaft direct-blocking shaft gear of the gearbox of the 5-ton wheel loader, the problems of abnormal abrasion of a friction plate, damage of an end bearing, three-shaft blocking and the like caused by a single-support structure of the direct-blocking shaft gear in the prior art can be solved, and the product quality is greatly improved.
Drawings
Fig. 1 is the main sectional structure schematic diagram of the three-shaft direct-blocking-shaft gear double-support structure of the gearbox of the 5-ton wheel loader.
Reference numerals: the direct gear shaft gear 1, the direct gear connecting disc 2, the middle bearing 3, the friction plate assembly 4, the piston 5, the end bearing 6 and the oil cylinder 7.
Detailed Description
The following provides a further detailed description of the three-shaft direct-blocking-shaft gear double-support structure of the transmission of the 5-ton wheel loader according to the present invention with reference to the accompanying drawings and specific embodiments.
Fig. 1 shows that the three-shaft direct-blocking shaft gear double-support structure of the transmission case of the 5-ton wheel loader of the present invention includes a direct-blocking shaft gear 1, a direct-blocking connecting disc 2, a middle bearing 3, a friction plate assembly 4, a piston 5, an end bearing 6 and an oil cylinder 7, wherein one end of the direct-blocking shaft gear 1 is splined with a sun gear to realize power input, the other end of the direct-blocking shaft gear is assembled and fixed on the oil cylinder 7 through the end bearing 6, the friction plate assembly 4 is splined with the direct-blocking shaft gear 1, and the piston 5 is arranged in the oil cylinder 7 and positioned on the right side of the friction plate assembly 4; the direct blocking connecting disc 2 is arranged on the direct blocking shaft gear 1, the direct blocking connecting disc 2 is provided with an installation inner hole of the middle bearing 3, the direct blocking shaft gear 1 is provided with an installation position of the middle bearing 3, and the middle bearing 3 and the end bearing 6 form a double-support structure of the direct blocking shaft gear 1.
When the gear is not shifted, a gap exists between the piston 5 and the friction plate assembly 4, and because the direct blocking shaft gear 1 is always connected with the sun gear, the direct blocking shaft gear 1 rotates at a high speed under the support of the middle bearing 3 and the end bearing 6, and simultaneously drives the friction plate of the friction plate assembly 4 to rotate. During gear shifting, hydraulic oil enters the oil cylinder 7 to push the piston 5 of the direct gear to move forwards, and in the process that the piston 5 presses the friction plate assembly 4, the external spline of the direct gear shaft gear 1 plays a guiding role, and the double-support structure can better ensure the verticality between the direct gear shaft gear 1 and the piston 5, so that the phenomenon that the friction plate assembly is twisted after the piston 5 presses the friction plate assembly 4 can be avoided; after the piston 5 is pressed, the friction plate of the friction plate component 4 stops rotating, and the power of the direct baffle shaft gear 1 drives the whole three-shaft assembly through the friction plate component 4, so that the torque is transmitted.
Above-mentioned 5 ton wheel loader gearbox triaxial directly keeps off a double-support structure of shaft gear through adopting double-support structure, and the straightness that hangs down that guarantees directly keep off shaft gear 1 and piston 5 that can be better avoids piston 5 to compress tightly back friction disc subassembly 4 to appear warping and leads to the unusual wearing and tearing of friction disc and triaxial card to die etc. trouble, has solved among the prior art and has kept off the fragile trouble of shaft gear single-support structure's bearing, has ensured product quality.
Claims (1)
1. A three-shaft direct blocking shaft gear double-support structure of a 5-ton wheel loader gearbox comprises a direct blocking shaft gear (1), a friction plate assembly (4), a piston (5), an end bearing (6) and an oil cylinder (7), wherein one end of the direct blocking shaft gear (1) is in splined connection with a sun gear to achieve power input, the other end of the direct blocking shaft gear is fixedly assembled on the oil cylinder (7) through the end bearing (6), the friction plate assembly (4) is in splined connection with the direct blocking shaft gear (1), and the piston (5) is arranged in the oil cylinder (7) and located on the right side of the friction plate assembly (4); the method is characterized in that: the direct-drive type hydraulic transmission device also comprises a direct-drive connecting disc (2) and a middle bearing (3); the direct-blocking connecting disc (2) is arranged on the direct-blocking shaft gear (1), the direct-blocking connecting disc (2) is provided with an installation inner hole of the middle bearing (3), the installation position of the middle bearing (3) is arranged on the direct-blocking shaft gear (1), and the middle bearing (3) and the end bearing (6) form a double-support structure of the direct-blocking shaft gear (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123227523.4U CN216742781U (en) | 2021-12-21 | 2021-12-21 | Double-support structure for three-shaft direct-blocking-shaft gear of gearbox of 5-ton wheel loader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123227523.4U CN216742781U (en) | 2021-12-21 | 2021-12-21 | Double-support structure for three-shaft direct-blocking-shaft gear of gearbox of 5-ton wheel loader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216742781U true CN216742781U (en) | 2022-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123227523.4U Active CN216742781U (en) | 2021-12-21 | 2021-12-21 | Double-support structure for three-shaft direct-blocking-shaft gear of gearbox of 5-ton wheel loader |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216742781U (en) |
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2021
- 2021-12-21 CN CN202123227523.4U patent/CN216742781U/en active Active
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