CN212959717U

CN212959717U - Bidirectional positioning device for tensioning small sprocket bearing of drilling machine

Info

Publication number: CN212959717U
Application number: CN202021185539.6U
Authority: CN
Inventors: 王跃新; 张海; 刘科; 戴俊杰; 常春林
Original assignee: Ansteel Mining Co Ltd
Current assignee: Ansteel Mining Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-04-13
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to a two-way positioner of rig tensioning small sprocket bearing, including rig tensioning small sprocket, two interior spacing subassemblies and two rig tensioning small sprocket bearings, its characterized in that has opened two outer spacing slots respectively in the outside of spacing slot in two of rig tensioning small sprocket inner circle to be equipped with spacing spring rand respectively in two outer spacing slots, constitute two outer spacing subassemblies, rig tensioning small sprocket bearing be located rig tensioning small sprocket through two interior spacing subassemblies and two outer spacing subassemblies respectively. The utility model has the advantages that: because the utility model discloses it has outer spacing subassembly to open at the hole axial of the little sprocket of rig tensioning, has reached and has carried out the purpose of two-way location to the little sprocket bearing of rig equipment tensioning, has played the effect of axial locking, and the cost of manufacture is low, simple to operate has effectively avoided the bearing to take place the axial float and damage, ensures rig production steady operation.

Description

Bidirectional positioning device for tensioning small sprocket bearing of drilling machine

Technical Field

The utility model belongs to the technical field of the perforation equipment, in particular to relate to a two-way positioner of rig tensioning small sprocket bearing.

Background

The rotary drill rig is the main drilling equipment for mining, the lifting and pressurizing of the rotary drill rig adopt closed chain transmission, and the power of the speed reducer of the main mechanism is transmitted to the rotary trolley through the pressurizing chain, the chain wheel, the gear and the rack, so that different working requirements of the drill rig are met, and the rotary drill rig brings a plurality of benefits for mining. The inner hole of the small tensioning chain wheel is used for installing a bearing and a chain wheel shaft, and pressurization and lifting are realized through rotation of the chain wheel. The existing positioning device for the small tensioning chain wheel bearing of the drilling machine mainly comprises two inner limiting grooves 2 arranged on the inner side of a small tensioning chain wheel 1, limiting spring clamping rings respectively arranged on the two inner limiting grooves, two sets of bearings and a chain wheel shaft 3, and is shown in figure 1. In the assembly process of the original small tensioning chain wheel, two limiting spring clamps are arranged on the inner side of the chain wheel, the limiting spring clamps are placed in the limiting grooves and are about 2 mm larger than the outer ring of the bearing, then the bearing is arranged, the outer ring of the bearing is tightly clamped with the limiting spring, and the bearing is prevented from moving inwards. The inner hole of the small tensioning chain wheel is in clearance fit with the bearing outer sleeve, the grinding clearance of the inner hole of the chain wheel is too large, or the bearing is nailed in the inner hole of the chain wheel by brute force, so that the bearing is too tight or too loose, the bearing is axially moved in the inner hole of the chain wheel due to the stress of the small tensioning chain wheel shaft in the using process, the bearing of the small tensioning chain wheel is deflected, the bearing is unevenly stressed, the inner ring or the outer ring of the bearing is damaged, meanwhile, the chain wheel can be deflected, the bearing can be moved outwards sometimes, the bearing is separated from the chain wheel, the single side of the chain wheel shaft is stressed, and the bearing on the other side. Causing accidents such as the chain of the pressurization transmission system falling off the track. Also, the sprocket base hole is worn and is not easily handled, which causes many troubles to the service personnel. At the same time, perforation production is affected. The technical levels of the existing maintainers are uneven and are always left in the form during the chain wheel assembling process, so that accidents such as bearing damage, chain wheel abrasion and the like are caused in the actual operation process. The cost consumption is increased, and the equipment failure is obviously increased.

Disclosure of Invention

The utility model aims at providing a simple to operate, labour saving and time saving, the difficult rig tensioning small sprocket bearing two-way positioner who flees of bearing.

The utility model discloses the purpose is realized through following technical scheme:

the utility model discloses a two-way positioner of rig tensioning small sprocket bearing, including rig tensioning small sprocket, the axial sets up spacing subassembly and two sprocket shafts and bearings in two of rig tensioning small sprocket inner circle, two interior spacing subassemblies by open in two of tensioning small sprocket inner circle spacing slot and set up including two spacing spring rand constitute in the spacing slot, its characterized in that, two the outside of spacing slot is opened respectively and is had two outer spacing slots in two of rig tensioning small sprocket inner circle to be equipped with spacing spring rand respectively in two outer spacing slots, constitute two outer spacing subassemblies, two sprocket shafts and bearings be located the rig tensioning small sprocket through two interior spacing subassemblies and two outer spacing subassemblies respectively.

The limiting spring retainer ring is a clamp spring retainer ring C-shaped elastic retainer ring.

The utility model has the advantages that:

because the utility model discloses it has outer spacing subassembly to open at the hole axial of the little sprocket of rig tensioning, has reached two sprocket shafts and the bearing of rig equipment and has carried out the purpose of two-way location, has played the effect of axial locking, and the cost of manufacture is low, simple to operate, effectively avoided the bearing to take place the axial float and damage, cause the chain incline, avoid the cost extravagant, reduced the intensity of labour who overhauls, ensured rig production steady operation.

Drawings

FIG. 1 is a schematic structural diagram of a tensioning small sprocket bearing positioning device of a drilling machine in the prior art.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is a schematic view of a check spring collar.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 2-4, the utility model discloses a two-way positioner of rig tensioning small sprocket bearing, including rig tensioning small sprocket 1, spacing subassembly and two sprocket shafts and bearing 3 in two of the axial setting rig tensioning small sprocket 1 inner circle, two interior spacing subassemblies 2 constitute by two spacing slot 2 and two spacing spring rand 5 that set up including spacing slot 2 in two of tensioning small sprocket inner circle, its characterized in that, two interior spacing slot 2's of rig tensioning small sprocket 1 inner circle the outside has opened two outer spacing slots 4 respectively to be equipped with spacing spring rand 5 respectively in two outer spacing slots 4, constitute two outer spacing subassemblies, sprocket shaft and bearing 3 be located rig tensioning small sprocket 1 through spacing subassembly and two outer spacing subassemblies respectively in two.

The distance between the outer limit groove 4 and the inner limit groove 2 is the width of the chain wheel shaft and the bearing 3. Thus, the chain wheel shaft and the bearing 3 are just arranged between the outer limit groove 4 and the inner limit groove 2, and the bidirectional positioning effect is achieved.

The limiting spring retainer ring 5 is a clamp spring retainer ring C-shaped elastic retainer ring. The special clamp can be conveniently placed in the inner limiting groove and the outer limiting groove for forming products sold in the market.

During assembly, the two clamp spring C-shaped elastic clamping rings are firstly arranged in the two inner limiting grooves 2, the two chain wheel shafts and the bearing 3 are arranged in the small tensioning chain wheel 1 of the drilling machine, the inner diameter of the small tensioning chain wheel is close to the two clamp spring C-shaped elastic clamping rings on the inner side, and the two clamp spring C-shaped elastic clamping rings are arranged in the two outer limiting grooves 4. The utility model is suitable for an other YZ series rig tensioning small sprocket bearing location.

Claims

1. The bidirectional positioning device is characterized in that two outer limiting grooves are respectively formed in the outer sides of the two inner limiting grooves of the inner ring of the small tensioning chain wheel of the drilling machine, limiting spring clamping rings are respectively arranged in the two outer limiting grooves to form two outer limiting assemblies, and the two chain wheel shafts and the bearings are respectively positioned in the small tensioning chain wheel of the drilling machine through the two inner limiting assemblies and the two outer limiting assemblies.

2. The bidirectional positioning device for the small tensioning sprocket bearing of the drilling machine as recited in claim 1, wherein said limiting spring collar is a snap spring collar C-shaped elastic collar.