CN203418379U

CN203418379U - Grinding rod of ductile cast iron pipe water grinding machine

Info

Publication number: CN203418379U
Application number: CN201320528332.8U
Authority: CN
Inventors: 朱传斌; 赵玉平
Original assignee: HEBEI XINXING DUCTILE IRON PIPES CO Ltd
Current assignee: HEBEI XINXING DUCTILE IRON PIPES CO Ltd
Priority date: 2013-08-28
Filing date: 2013-08-28
Publication date: 2014-02-05
Anticipated expiration: 2023-08-28

Abstract

The utility model discloses a grinding rod of a ductile cast iron pipe water grinding machine, and relates to the technical field of ductile cast iron pipe water grinding machines. The grinding rod of the ductile cast iron pipe water grinding machine comprises a grinding shaft, a grinding head and a bearing pedestal, wherein the grinding head and the bearing pedestal are connected with the grinding shaft, a bearing is arranged in the bearing pedestal, and sections of the grinding shaft are connected through couplings. The bearing arranged in the bearing pedestal is in a two-disc type, and a protective cover is arranged outside the grinding rod. The protective cover is arranged and protects the grinding rod running at high speed, not only can spatter wounding accidents caused by loosening connection of components and parts and other faults be prevented, but also rubbing cut accidents caused by negligence or misoperation of an operator can be prevented, and equipment and human bodies are protected safely. The two-disc bearing is arranged in the bearing pedestal and can reduce abrasion, the equipment failure rate, working intensity of a maintenance man and potential safety hazards in operation, reduce occurrence of the accidents, and effectively ensure normal operation of production.

Description

Ductile iron pipe levigator mill bar

Technical field

The utility model relates to ductile iron pipe levigator technical field.

Background technology

While producing centrifugal ductile cast iron pipes, its inner surface must carry out coating processing, and water delivery is generally the cement mortar liner that applies layer with centrifugal ductile cast iron pipes product, its effect is: protection water source, strengthen the corrosion resistance of spheroidal graphite cast-iron pipe internal surface, improve its inner surface fineness to reduce resistance to water-flow, yet in each centrifugal ductile cast iron pipes manufacturing enterprise, owing to being subject to technique, the impact of the factors such as equipment and personnel's operation, centrifugal ductile cast iron pipes is being applied after cement mortar liner, its inner lining surface often there will be leakage sand, elephant skin, peeling, the defects such as foaming, these defects are more outstanding for large size pipeline, have a strong impact on the quality of product and the serviceability of product, in addition, after the cement mortar liner of the centrifugal ductile cast iron pipes through applying is dry, its inner lining surface often has the cement sand bed that one deck is very thin, its surface also can adhere to some grains of sand and dust, very easily comes off, as not thorough in processed, after this series products is thrown in and is used, also can polluted source.For these problems, current domestic most factories take levigator to polish to pipe lining.

With levigator, polishing, is that levigator drives mill bar uniformly cement sand bed in pipeline to be polished flat smooth.Due to when polishing, bearing block and the bearing gland screw of mill bar often have fracture of wire and loosening phenomenon, the nylon that connects mill axle is not wear-resistant to wheel, strengthened maintenance activity personnel's working strength, also cumbersome when changing, and mill axle is outside exposed, there is no safeguard procedures, when High Rotation Speed, flying out of fracture of wire, is easy to injure side operation and pedestrian's personal safety, there is great potential safety hazard, equipment failure rate is high, repairs normally carrying out of more difficult, serious impact production.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of ductile iron pipe levigator mill bar, can reduce equipment failure rate, reduce maintenance personal's working strength, reduce operating potential safety hazard, the generation of minimizing accident, effectively guarantees the normal operation of producing.

For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of ductile iron pipe levigator mill bar, comprise mill axle, the bistrique and the bearing block that are connected with mill axle, in bearing block, be provided with bearing, between described mill axle, adopt shaft coupling to connect, the bearing arranging in bearing block is two dishes, in mill bar outside, protective cover is set.

Preferably, described protective cover be the channel-section steel of two same sizes and the notch of two channel-section steels be relatively separately fixed at bearing block above and below, the both sides, outside of described channel-section steel are all fixed with plural gusset.

Preferably, the end of described bearing block is provided with seal cover.

Preferably, described bearing is deep groove ball bearing.

The beneficial effect that adopts technique scheme to produce is: the utility model arranges protective cover in mill bar outside, can prevent because the connection of parts is loosening or other fault causes the accident of splashing and hurting sb.'s feelings, can prevent again the accident that scratches that carelessness or maloperation due to operating personnel cause, equipment and the person all be played to the effect of security protection; Adopt shaft coupling to connect mill axle, because shaft coupling is cheap, versatility is good, mounting or dismounting are easy, repair and replacement are convenient and durable, make repair density reduction, operating efficiency raising; Two dish bearings are installed in bearing block, can be reduced the wearing and tearing of bearing, reduce fault rate, and then reduce maintenance time, guarantee the normal operation of equipment.

Accompanying drawing explanation

Fig. 1 is cutaway view of the present utility model;

Mark in figure: 1-grinds axle; 2-protective cover; 3-gusset: 4-seal cover; 5-bearing block; 6-bearing; 7-shaft coupling; 8-bistrique.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As seen from the figure, the utility model comprise mill axle 1, with mill axle 1 bistrique 8 and the bearing block 5 that are connected, in bearing block 5, be provided with bearing 6, between described mill axle 1, adopt shaft coupling 7 to connect, at the bearing 6 of bearing block 5 interior settings, be two dishes, in mill bar outside, protective cover 2 is set.

Described protective cover 2 be the channel-section steel of two same sizes and the notch of two channel-section steels be relatively separately fixed at bearing block 5 above and below, the both sides, outside of described channel-section steel are all fixed with plural gusset 3, notch by two channel-section steels is relative, be fixed on the outside of bearing block 5, on the both sides, outside of two channel-section steels, weld plural gusset 3 again, gusset 3 is fixed together two channel-section steels, form a protective cover 2, mill bar is played to protective action, and the two ends of described protective cover 2 are fixed on the dolly at levigator body two ends.

The end of described bearing block 5 is provided with seal cover 4, and seal cover 4 can prevent that dust from entering in bearing 6, can limit moving axially of bearing 6 again, can extend the service life of bearing 6, reduces fault rate.

Described bearing 6 is selected two dish deep groove ball bearings, deep groove ball bearing is mainly used in bearing radial load, also can bear certain axial load, be applicable to the even extremely high-revolving operation of high rotating speed, and very durable, without frequent maintenance, in this mill bar, selecting bearing 6 is also the main radial load, durable and not easy to wear of considering to bear, therefore the preferential deep groove ball bearing of selecting, reduce fault rate, reduce repair density.

The utility model specific implementation process is as follows: first mill axle 1 and bearing block 5 are installed together, to grind between axle 1 and connect with shaft coupling 7, installing mill axle 1 integral body, be placed in a channel-section steel again, by bearing block 5 and channel-section steel firm welding, another root channel-section steel notch is relative with the notch of last channel-section steel, be put into bearing block 5 above, weld together with bearing block 5, then with gusset 3, be fixed on the outside of two channel-section steels, channel-section steel is more firmly combined, become an integral body, then bistrique 8 is installed to the end of mill bar.

The utility model arranges protective cover 2 in mill bar outside, can prevent because the connection of parts is loosening or other fault causes the accident of splashing and hurting sb.'s feelings, can prevent again the accident that scratches that carelessness or maloperation due to operating personnel cause, equipment and the person all be played to the effect of security protection; Adopt shaft coupling 7 to connect mill axles 1, because shaft coupling 7 is cheap, versatility is good, mounting or dismounting are easy, repair and replacement are convenient and durable, make repair density reduction, operating efficiency raising; The interior installation two dish bearings 6 of bearing block 5, can reduce the wearing and tearing of bearing 6, reduce fault rate, and then reduce maintenance time, guarantee the normal operation of equipment.

Claims

1. a ductile iron pipe levigator grinds bar, comprise mill axle (1), the bistrique (8) and the bearing block (5) that are connected with mill axle (1), in bearing block (5), be provided with bearing (6), it is characterized in that: between described mill axle (1), adopt shaft coupling (7) to connect, the bearing (6) arranging in bearing block (5) is two dishes, in mill bar outside, protective cover (2) is set.

2. ductile iron pipe levigator according to claim 1 grinds bar, it is characterized in that: described protective cover (2) be the channel-section steel of two same sizes and the notch of two channel-section steels be relatively separately fixed at bearing block (5) above and below, the both sides, outside of described channel-section steel are all fixed with plural gusset (3).

3. ductile iron pipe levigator mill bar according to claim 1, is characterized in that: the end of described bearing block (5) is provided with seal cover (4).

4. ductile iron pipe levigator mill bar according to claim 1, is characterized in that: described bearing (6) is deep groove ball bearing.