CN205315666U

CN205315666U - Gearbox output structure

Info

Publication number: CN205315666U
Application number: CN201620033874.1U
Authority: CN
Inventors: 吴弥旷; 胡洪伟; 朱宏; 汪钟平
Original assignee: Hangzhou South Tongda Gear Co Ltd
Current assignee: Hangzhou South Tongda Gear Co Ltd
Priority date: 2016-01-14
Filing date: 2016-01-14
Publication date: 2016-06-15
Anticipated expiration: 2026-01-14

Abstract

The utility model relates to a gearbox output structure solves load operating mode that gearbox output connects and can result in that internal gear of the gearbox is vice to be damaged when steady, results in the equipment failure problem. This device includes the torsion shaft as output, its characterized in that: torsion shaft outside cover is equipped with the hollow shaft, gapped between torsion shaft and the hollow shaft, the inner inner and hollow shaft of torsion shaft is connected in step, and the outer end of torsion shaft is followed the hollow shaft outer end and is stretched out as the output, and the fixed gear wheel that is used for variable speed transmission is established to the middle part of hollow shaft or the outside cover of outer end. The utility model discloses a hollow shaft changes to form to the load operating mode and cuts off as the transmission transition structure of gear wheel in the gear box and torsion shaft, and the derating operating mode changes the interference of feeding back operation that gear wheel, counter gear organized and causing, and design security bolt formation protection, block power transmission, protection gear train under abominable operating mode.

Description

A kind of gear-box exports structure

Technical field

The utility model relates to a kind of gear box structure, exports structure in particular to a kind of gear-box.

Background technology

In plant equipment, gear-box is a kind of common speed change transmission mechanism. Gear-box arranges various types of gear train and carries out transmission, utilize the different drive ratios between gear train, carry out the gearratio of regulating tooth roller box input and output. In gear-box, gear is the drive mechanism of most critical, and gear to engagement face processing complex process, processing precision height, be also part the most important in gear-box. Common gear-box is exported by torsion axle, and for plant equipment, the load behavior being connected with torsion axle is ever-changing, and the working conditions change of load directly feeds back to the torsion axle being attached thereto, and then feeds back to gear train. When load is not steady, the normal region of engagement of travelling gear engagement deviation can be caused, cause spot corrosion, the broken teeth of gear pair, so that equipment lost efficacy, bring earth shaking loss to production.

Summary of the invention

The purpose of this utility model is that the load behavior that solution gear-box output connects can cause inner gear of the gear box pair damage time steady, cause equipment Problem of Failure, there is provided a kind of gear-box to export structure, by the flexible output of hollow shaft, eliminate load change to the impact of gear pair.

The utility model solves the technical scheme that its technical problem adopts: a kind of gear-box exports structure, including as the torsion axle exported, described torsion axle outer sheath is provided with hollow shaft, gap is had between described torsion axle and hollow shaft, the inner of torsion axle is synchronous with the inner connection of hollow shaft, the outer end of torsion axle is stretched out as output from hollow shaft outer end, the sheathed gear wheel being fixed for speed change transmission in the middle part of hollow shaft or the outside of outer end. Hollow Shaft Transmission is adopted between the torsion axle of gear wheel and output; when load behavior changes; torsion axle can with limited swing in the gap of hollow shaft; the elasticity making full use of hollow shaft cuts off torsion axle working conditions change to the impact of gear wheel; gear train is formed protection, extends the service life of gear train. The junction of hollow shaft and gear wheel is away from the inner of hollow shaft, and both distances are more big, cuts off buffering effect more good.

As preferably, the inner of described hollow shaft is connected with torsion axle the inner by sleeve, torsion axle adopts key to be connected with sleeve, sleeve and hollow shaft adopt equally distributed some safe bolts to connect in circumference direction, safe bolt is placed vertically, and described safe bolt is the safe bolt of the design tensile strength upper limit. The shearing strength of safe bolt through theory calculate, when load behavior is extremely severe, torsion axle swung acute, the shearing of safe bolt is exceeded the design upper limit, is cut off in safe bolt, avoids being damaged by gear wheel.

As preferably, described torsion axle the inner is provided with the shaft shoulder, and sleeve ends is provided with the interior flange being arranged in the shaft shoulder, the interior flange of sleeve adopts the nut being set on torsion axle to hold out against fixing. Sleeve and torsion axle can dismantle examine and replace.

As preferably, being embedded with the fixing ring for transporting protection between the outer end of described hollow shaft and the gap of torsion axle, fixing ring and hollow shaft outer face adopt bolt to removably connect. When equipment conveying, adopt the gap between fixing ring blocking hollow shaft and torsion axle, avoid torsion axle vibration in transportation.

As preferably, described gear wheel and hollow shaft adopt key to connect.

The utility model adopts hollow shaft as the transmission transition structure of gear wheel in gear-box and torsion axle, load behavior change is formed and cuts off, reduces the interference that load behavior change feeds back to gear wheel, running to gear train causes; And design safe bolt and form protection, under bad working environments, block power transmission, protection gear train.

Accompanying drawing explanation

Fig. 1 is a kind of structure schematic diagram of the present utility model.

In figure: 1, gear wheel, 2, hollow shaft, 3, torsion axle, 4, sleeve, 5, safe bolt, 6, nut, 7, fixing ring, 8, bolt.

Specific embodiment party formula

Below by specific embodiment and by reference to the accompanying drawings the utility model is illustrated further.

Embodiment: a kind of gear-box exports structure, as shown in Figure 1. The gear train arranged in gear-box connects output shaft eventually through gear wheel 1. This device output shaft is torsion axle 3, by hollow shaft 2 connection for transmission between gear wheel 1 and torsion axle 3. Gear wheel cover 1 is located at outer wall in the middle part of hollow shaft 2, and gear wheel cover and hollow shaft adopt key to connect. Torsion axle 3 is set in the inside of hollow shaft 2, has gap between torsion axle and hollow shaft, and torsion axle slightly can be trembled when working conditions change swing. Being transferred by sleeve 4 in the inner of hollow shaft and the inner of torsion axle, the inner inwardly flange of sleeve, torsion axle is inner is provided with the shaft shoulder near end, and in sleeve, flange be located on the shaft shoulder, and it is fixing to adopt nut 6 to hold out against. The middle part of sleeve adopts key to be connected with torsion axle. The outer end of sleeve is provided with outer flange, and the outer flange of sleeve adopts the safe bolt axially arranged to be connected with torsion axle the inner, and safe bolt is uniformly distributed some in circumference direction. The outer end of hollow shaft 2 is stretched out as output in the outer end of torsion axle 3. Gap location between the outer end of hollow shaft 2 and torsion axle 3 is provided with fixing ring 7, and fixing ring adopts bolt 8 to block the outer face dismantled and be fixed on hollow shaft.

During transport, fixing ring is loaded onto, torsion axle vibration when avoiding transporting. After equipment is installed, before operation, fixing ring is pulled down. The outer end of torsion axle connects load, and when load behavior changes, torsion axle vibrates at limited amplitude, utilizes the small size distortion of hollow shaft to be formed and cuts off, reduces working conditions change to the impact of gear wheel. When load behavior change extremely badly exceedes the upper limit, safe bolt exceedes and ruptures by the power upper limit, blocks power and connects.

Claims

1. a gear-box exports structure, including as the torsion axle exported, it is characterized in that: described torsion axle outer sheath is provided with hollow shaft, gap is had between described torsion axle and hollow shaft, the inner of torsion axle is synchronous with the inner connection of hollow shaft, the outer end of torsion axle is stretched out as output from hollow shaft outer end, the sheathed gear wheel being fixed for speed change transmission in the middle part of hollow shaft or the outside of outer end.

2. a kind of gear-box according to claim 1 exports structure, it is characterized in that: the inner of described hollow shaft is connected with torsion axle the inner by sleeve, torsion axle adopts key to be connected with sleeve, sleeve and hollow shaft adopt equally distributed some safe bolts to connect in circumference direction, safe bolt is placed vertically, and described safe bolt is the safe bolt of the design tensile strength upper limit.

3. a kind of gear-box according to claim 2 exports structure, it is characterised in that: described torsion axle the inner is provided with the shaft shoulder, and sleeve ends is provided with the interior flange being arranged in the shaft shoulder, and the interior flange of sleeve adopts the nut being set on torsion axle to hold out against fixing.

4. a kind of gear-box according to claim 1 or 2 or 3 exports structure, it is characterised in that: being embedded with the fixing ring for transporting protection between the outer end of described hollow shaft and the gap of torsion axle, fixing ring removably connects with hollow shaft outer face employing bolt.

5. a kind of gear-box according to claim 1 or 2 or 3 exports structure, it is characterised in that: described gear wheel and hollow shaft adopt key to connect.