CN208503448U - Three axle assembly structure of loading machine gearbox - Google Patents

Abstract

The utility model discloses a kind of three axle assembly structures of loading machine gearbox, it includes oil cylinder, piston, friction plate assembly, limits straight pin, driven disc, by platen and bolt；The limit straight pin is mounted in by the pin hole of platen；It is described to be bolted by platen and oil cylinder；Three limit holes are added on the piston to be uniformly distributed along contour, the piston is assemblied in oil cylinder, friction plate assembly is located at piston and by between platen, and driven disc and limit hole in friction plate assembly play the role of limit, anti-rotation to piston with limit straight pin cooperation.The utility model has the characteristics that structure simple, production and easy to maintain, safe and reliable, solves the problems, such as that three axle assembly inner piston pin hole ovalization of loading machine gearbox, spacer pin fracture and cylinder body oil leak in the prior art lead to shift gears damage parts abrasion to cause friction plate assembly damage to cause three axis stuck.

Description

Three axle assembly structure of loading machine gearbox

Technical field

The utility model relates to a kind of planet row type gearboxes of engineering machinery, and in particular to three axis of loading machine gearbox is total At structure, especially suitable for 5 tons of three axle assembly structures of Wheel type loader transmission case.

Background technique

Within considerable time from now on, wheel loader will be one of most important machine in engineering machinery, domestic Annual requirement is sustainedly and stably maintained at 70,000 or so, but domestic loading machine manufacturer is sharply expanding, and competes more sharp Strong, each manufacturer develops new product one after another to cope with the challenge in market.5 tons of Wheel type loader transmission cases generally use planet row Formula transmission assembly is the advantage because its maintainability is good, reliability and cost performance are high, therefore still occupies the half river in market Mountain.Three axle assemblies in the transmission assembly, generally use the composite structure of friction plate assembly, oil cylinder and piston；Pass through gear Pressure oil enters oil cylinder, pushes piston pressing friction piece component to realize that torque transmits；In gear handoff procedure, to guarantee to live Relative rotation is not present between plug and cylinder body, generallys use three spacer pins in three axle assemblies of the prior art and is limited, with Guarantee between piston and oil cylinder without relative rotation.It has the disadvantage that in the gear course of work, since friction plate is direct with piston Contact, the rotation torque of friction plate are directly delivered on piston and straight pin, it is easy to be caused spacer pin to be broken or be limited piston Position pin hole becomes ellipse, to cause the failures such as friction plate damages, three axle assemblies are stuck.

Summary of the invention

The purpose of the utility model is to provide a kind of structures simple, production and easy to maintain, safe and reliable loading Three axle assembly structure of machine gearbox solves three axle assembly inner piston pin hole ovalization of loading machine gearbox, limit in the prior art Pin fracture and cylinder body oil leak lead to damage parts abrasion of shifting gears, so that friction plate assembly damage be caused to cause three axis stuck Problem.

To achieve the above object, three axle assembly structure of the utility model loading machine gearbox includes oil cylinder, piston, friction plate Component limits straight pin, driven disc, by platen and bolt；The limit straight pin is mounted in by the pin hole of platen；The compression Disk is bolted with oil cylinder；It adds three limit holes on the piston to be uniformly distributed along contour, which is assemblied in oil cylinder Interior, friction plate assembly is located at piston and by between platen, the driven disc and limit hole in friction plate assembly with limit straight pin Cooperation, plays the role of limit, anti-rotation to piston.

Above-mentioned three axle assembly structure of loading machine gearbox passes through the three axle assembly structure of loading machine gearbox in the prior art On the basis of, cancel the pin hole and spacer pin on oil cylinder, changes piston structure, and add three limit holes on piston, make to limit The limit straight pin of position hole and driven disc cooperates, and plays limit, anti-rotation effect to piston.In shift process, pressure oil enters Oil cylinder pushes piston mobile toward friction plate assembly, and the limit hole on piston is moved along the limit straight pin of driven disc, until pressure Friction-tight piece component, in the process, pressure oil rise to operating oil pressure from above freezing, and the rotation torque of friction plate assembly will be passed directly The limit straight pin of the limit hole being delivered on piston, limit hole and driven disc on piston cooperates, and bears friction plate assembly transmitting The rotation torque come realizes the anti-rotation between piston and oil cylinder.

Three axle assembly structure of the utility model loading machine gearbox have following technical characterstic and the utility model has the advantages that

1, limit hole is added on piston, by monoblock cast, limit hole is connect with piston integral, is had higher strong Degree, and machine and easily guarantee size；

2, oil cylinder cancels pin hole, i.e. existing leakage point in cancellation oil cylinder, avoids leading because of mismachining tolerance and forging problem Cause the leakage of pin hole；It when work, can guarantee that gear pressure does not leak, keep complete machine operating more stable, reduce the failure of three axle assemblies；

3, the utility model has better economy, cancel the spacer pin that need to be heat-treated, cancel the brill of pin hole on oil cylinder, Process is twisted, processing cost is saved and reduces assembling process, by changing the lower casting piston of material cost, keeps three axis total At with better economy.

Using above-mentioned three axle assembly structure of loading machine gearbox, it is able to solve because friction plate rotation torque is transmitted on piston The problem of piston hole is oval, the spacer pin fracture on oil cylinder is to cause entire three axle assembly to damage is caused, it is total with stylish three axis At with better economy, while reducing product service on 3-guarantees expense, moreover it is possible to increase enterprise income.

Detailed description of the invention

Fig. 1 is three axle assembly structure main cross-sectional schematic diagram of the utility model loading machine gearbox.

Fig. 2 is that piston structure left view regards schematic diagram in Fig. 1.

Appended drawing reference: oil cylinder 1, piston 2, friction plate assembly 3, limit straight pin 4, driven disc 5, limit hole 6, by platen 7, Bolt 8.

Specific embodiment

Three axle assembly structure of the utility model loading machine gearbox is made into one with reference to the accompanying drawings and detailed description Step is described in detail.

As Figure 1-Figure 2, three axle assembly structure of the utility model loading machine gearbox includes oil cylinder 1, piston 2, friction Piece component 3 limits straight pin 4, driven disc 5, by platen 7 and bolt 8；The limit straight pin 4 is mounted in the pin hole by platen 7 It is interior；It is described to be connect with oil cylinder 1 by bolt 8 by platen 7；Three limit holes 6 are added on the piston 2 to be uniformly distributed along contour, The piston 2 is assemblied in oil cylinder 1, and friction plate assembly 3 is located at piston 2 and by the driven disc 5 between platen 7, in friction plate assembly 3 Cooperate with limit straight pin 4 with limit hole 6, plays the role of limit, anti-rotation to piston 2.

In shift process, pressure oil enters oil cylinder 1 and pushes piston 2 mobile toward friction plate assembly 3, the limit on piston 2 Hole 6 is moved along limit straight pin 4 until pressing friction piece component 3, in the process, pressure oil rises to working oil from above freezing Pressure, the rotation torque of friction plate assembly 3 will be directly delivered to the limit hole on piston 26, and the limit hole 6 on piston 2 and limit are justified Pin 4 cooperates, and bears the rotation torque that the transmitting of friction plate assembly 3 comes, realizes the anti-rotation between piston 2 and oil cylinder 1.

Above-mentioned three axle assembly structure of loading machine gearbox solves three axle assembly of loading machine gearbox because inner piston pin hole is ellipse Circle, spacer pin fracture and cylinder body oil leak lead in three axle assemblies damage parts abrasion to cause friction plate assembly damage, The stuck problem of three axis.

Claims (1)

1. a kind of three axle assembly structure of loading machine gearbox, including it is oil cylinder, piston, friction plate assembly, limit straight pin, driven Piece, by platen and bolt；The limit straight pin is mounted in by the pin hole of platen；The piston is assemblied in oil cylinder, friction plate Component is located at piston and by between platen；It is described to be bolted by platen and oil cylinder；It is characterized in that: being added on the piston Three limit holes are uniformly distributed along contour, and the driven disc and the limit hole in friction plate assembly are matched with the limit straight pin It closes, plays the role of limit, anti-rotation to piston.