CN207554734U

CN207554734U - A kind of gear

Info

Publication number: CN207554734U
Application number: CN201721517899.XU
Authority: CN
Inventors: 王庆龄
Original assignee: DASHENGGE'ER METALLURGICAL EQUIPMENT Co Ltd BEIJING
Current assignee: DASHENGGE'ER METALLURGICAL EQUIPMENT Co Ltd BEIJING
Priority date: 2017-11-14
Filing date: 2017-11-14
Publication date: 2018-06-29
Anticipated expiration: 2027-11-14

Abstract

A kind of gear, including wheel body, gear ring, the wheel body is split type setting with the gear ring；The wheel body is set as wheel body outer rim, outer wheel disc and inner wheel hub, and the outer wheel disc external stability is sleeved on outside the wheel body outer rim, and the outer wheel disc housing is less than the wheel body outer rim and the inner wheel hub thickness in the inner wheel hub external stability, the foreign steamer disc thickness；The gear ring is set as annular external toothing, and the external toothing is sleeved on outside the wheel body outer rim of same thickness to be connected by key connection or interference hot charging.Gear is divided into four parts by the utility model, can replace component respectively as needed.External toothing is vulnerable part, is broken and is individually replaced, key connection or hot charging convenient disassembly.Other components, which are not worn, not to be scrapped, and essentially without replacement, use cost reduces 40% -50%.

Description

A kind of gear

Technical field

The utility model is related to a kind of gear, for opencut large excavator.

Background technology

Gear is mounted in rotary speed reducer for excavator, driving speed reducer, on lifting speed reducer；Existing gear in the market Formula is all Integral alloy steel casting, forging.In order to which the requirement for meeting gear must use expensive alloy steel material, and tooth In use, whole once tooth surface abrasion or broken teeth to scrap, use cost is big for wheel.

Utility model content

The utility model provides a kind of gear, solves these defects of the existing technology, reduces product use Cost extends product service life.

What the technical solution of the utility model was realized in：

A kind of gear, including wheel body, gear ring, the wheel body is split type setting with the gear ring；The wheel body is set as Wheel body outer rim 22, outer wheel disc 11 and inner wheel hub 12, the wheel body outer rim 22 is sleeved on 11 external stability of outer wheel disc outside, described outer 12 external stability of inner wheel hub is sleeved on outside wheel disc 11, outer 11 thickness of wheel disc is less than the wheel body outer rim 22 and the lubrication groove 12 thickness of hub；The gear ring is set as annular external toothing 21, and the external toothing 21 is sleeved on outside the wheel body outer rim 22 of same thickness Portion is connected by key 3 or interference hot charging connection.

The outer wheel disc 11 is symmetrical with the center line setting of the external toothing 21, and the outer wheel disc 11 is uniformly symmetrical arranged one Ring through hole 111.

Module is 1 with gear ring tip edge wall thickness B ratios:1.5—1:10 (1 is module)；Module：Keyway is wide B ratios are 1:0.2—1:1, the 31 width b of keyway are width in the circumferential direction, and the gear ring tip edge wall thickness B is radially Thickness.

Module is 1 with gear ring tip edge wall thickness B ratios:3—1:4 (1 is module)；Module：The wide b ratios of keyway It is 1:0.4—1:0.5.

The technique effect of the utility model：

1st, gear is divided into four parts, component can be replaced respectively as needed.External toothing is vulnerable part, is broken individually more It changes, key connection or hot charging convenient disassembly.Other components, which are not worn, not to be scrapped, and essentially without replacement, use cost reduces 40% -50%.

2nd, i.e. meet intensity requirement saves material again for the thickness design of each component.

3rd, gear is divided into four parts, then different materials can be selected respectively as needed, it is only with teeth in order to meet the requirements The expensive alloy steel material of outer ring selection, other parts can reduce the cost of selection material under the premise of meeting the requirements.Change The drawbacks of becoming conventional gears single-casting, forging same material.

4th, module：The wide b ratios of keyway are 1:0.2—1:1.Module：Gear ring tip edge wall thickness B ratios are 1:1.5— 1:10 intensity for meeting external toothing meet requirement.

Description of the drawings

Fig. 1-1 is the front schematic view of the utility model external toothing,

Fig. 1-2 is the axial sectional view of Fig. 1-1,

Fig. 2-1 be the utility model wheel body outer rim, outer wheel disc, inner wheel hub combination front schematic view,

Fig. 2-2 is Fig. 2-1 axial sectional views,

Fig. 3-1 is that the utility model embodiment 1 combines front schematic view,

Fig. 3-2 is Fig. 3-1 axial sectional views,

Fig. 4-1 is that the utility model embodiment 2 combines front schematic view,

Fig. 4-2 is Fig. 4-1 axial sectional views,

Detailed description of main elements：

External toothing 21, wheel body outer rim 22, outer wheel disc 11, inner wheel hub 12, key 3, keyway 31,32 embodiment 1 of keyway,

Specific embodiment

Embodiment 1

As shown in Figure 1, 2, 3, a kind of gear of the utility model, including wheel body, gear ring, the wheel body is with the gear ring Split type setting；The wheel body is set as wheel body outer rim 22, outer wheel disc 11 and inner wheel hub 12, and institute is sleeved on outside the wheel body outer rim 22 Outer 11 external stability of wheel disc is stated, is sleeved on 12 external stability of inner wheel hub outside the outer wheel disc 11, outer 11 thickness of wheel disc is small In 12 thickness of the wheel body outer rim 22 and the inner wheel hub；The gear ring is set as annular external toothing 21, the external toothing 21 It is sleeved on outside the wheel body outer rim 22 of same thickness and Fig. 3-2 is shown in by the connection of key 3.

Module and gear ring, the ratio of tip edge wall thickness b meet intensity needed for gear function, if less than the ratio, It is easily broken at gear ring tip edge thickness b, if more than this ratio, then material cost and processing cost substantially increase.Module and key The ratio of groove width b can meet intensity needed for gear function in the proportional region, if less than the ratio, key is easily cut Disconnected, if more than the ratio, then material cost and processing cost substantially increase.

Module and tip edge wall thickness, module and tip edge wall thickness and width of keyway are accurately applied in the range (in the circumferential direction) proportionate relationship, it is ensured that the precision intensity and service life of gear.

Embodiment 2

As shown in Fig. 4-2,22 outside of wheel body outer rim that the external toothing 21 is sleeved on same thickness is connected using interference hot charging. Remaining is repeated no more with embodiment 1.

Claims

1. a kind of gear, including wheel body, gear ring, which is characterized in that the wheel body is split type setting with the gear ring；The wheel Body is set as wheel body outer rim (22), outer wheel disc (11) and inner wheel hub (12), and the outer wheel disc is sleeved on outside the wheel body outer rim (22) (11) external stability, the outer wheel disc (11) are sleeved on the inner wheel hub (12) external stability outside, and outer wheel disc (11) thickness is small In the wheel body outer rim (22) and the inner wheel hub (12) thickness；The gear ring is set as annular external toothing (21), described outer Wheel body outer rim (22) outside that gear ring (21) is sleeved on same thickness is connected by key (3) connection or interference hot charging.

2. a kind of gear as described in claim 1, which is characterized in that the outer wheel disc (11) is symmetrical with the external toothing (21) Center line setting, the outer wheel disc (11) uniformly be symmetrical arranged a ring through hole (111).

3. a kind of gear as described in claim 1, which is characterized in that module is 1 with gear ring tip edge wall thickness B ratios: 1.5—1:10；Module：The wide b ratios of keyway are 1:0.2—1:1, keyway (31) the width b are width in the circumferential direction, The gear ring tip edge wall thickness B is thickness radially.

4. a kind of gear as claimed in claim 3, which is characterized in that module is 1 with gear ring tip edge wall thickness B ratios:3— 1:4；Module：The wide b ratios of keyway are 1:0.4—1:0.5.