CN101628300B

CN101628300B - Traveling-type revolving joint

Info

Publication number: CN101628300B
Application number: CN 200810048468
Authority: CN
Inventors: 李建伟; 俞汉桥; 熊建洲
Original assignee: XIANGFAN BOYA MACHINERY CO Ltd; XIANGFAN ZHENBEN TRANSMISSION APPARATUS CO Ltd
Current assignee: Xiangyang Zhenben Transmission Equipment Co., Ltd.; Xiangyang Boya Precision Industrial Equipments Co Ltd
Priority date: 2008-07-16
Filing date: 2008-07-16
Publication date: 2011-06-22
Anticipated expiration: 2028-07-16
Also published as: CN101628300A

Abstract

The invention discloses a traveling-type revolving joint, which is mainly used at two ends of a working roll and an intermediate roll of a flattening machine in the steel industry and nonferrous metal industry. The external cylindrical surface of the large end part of a coupling shaft is provided with a combined bearing which composed of a needle bearing and a thrust bearing and is arranged in a large hole of a joint body, an alloy body is embedded in a small hole of the joint body at the other end of the large hole; the coupling shaft adopts a stairs structure, a thread is arranged at a small diameter end part, and a spring is sleeved between lug bosses of the combined bearing and the coupling shaft, and the outside of the spring is sleeved with a thrust bush. The coupling, the rotation and the limit between the revolving joint and the working roll and the intermediate roll are combined effectively so that the joint and the working roll (or the intermediate roll) can be replaced conveniently, thereby achieving reliable performance, effectively preventing the revolving joint from being broken, fully preventing the roll from being broken, prolonging the service life of the joint and the roll system and reducing the stop frequency of the production line.

Description

Traveling-type revolving joint

Affiliated technical field

The present invention relates to the traveling-type revolving joint that uses on the employed traveling-type revolving joint of a kind of iron and steel and non-ferrous metal industry, particularly stretch bending-straightening machine working roll, intermediate calender rolls.

Background technology

At present, the swivel joint of stretch bending-straightening machine working roll, intermediate calender rolls is of a great variety both at home and abroad, and the structure that each type adopts is how different and few similar, but fault is more, to the production line influence greatly.Enumerate three examples below and use structure more widely comparatively speaking, point out the problem of its existence: Fig. 3, Fig. 4 simultaneously, Fig. 5 is disclosed is the structure of three kinds of swivel joints, there is following drawback respectively: among Fig. 3: 1, be subjected to structural limitations, selected bearing capacity is little, stuck or burn to death because of heating easily, simultaneously, fittings body accuracy of manufacture height, the influence of factors such as overproof and assembling appears, the easier similar phenomenon that occurs; 2, in swivel joint when work, be subjected to the forward centrifugal action at an end of working roll (or intermediate calender rolls), and the other end then is subjected to reverse centrifugal action, and this reverse end is loosening easily, and the stretch-bending straightening quality of steel plate is produced greatly influence; 3, since swivel joint loosening after, be equivalent to that roller assembly is elongated not to have had an axial movement value, swivel joint can bear bigger axial force and radial load causes fractureing owing to dieback; 4, when changing working roll or intermediate calender rolls, need the trip bolt and the outside mobile block seat of loosening end block seat, make roll change that inconvenience be arranged slightly.Among Fig. 4: 1, since when using swivel joint bear the active force of preloading spring in radial direction, it is very careful to need during installation, can not pretension excessive, otherwise operate as normal is impacted; 2, during roll change, will pull down preloading spring earlier, and have two people to cooperate just to carry out, roll change is not too convenient.Among Fig. 5: 1, swivel joint is subjected to the factor affecting of the installing hole accuracy of manufacture and assembling aspect to cause stressed heating bearing to occur and burns phenomenon to death; 2, working roll or intermediate calender rolls produce axial float (operate as normal requires to have certain axial movement value) at work, make swivel joint head impact wearing and tearing end block seat, when occurring just producing radial load behind the wearing and tearing pit, cause roller to fracture; When 3, changing roller, need the trip bolt and the outside mobile block seat of loosening end block seat, for top roll, many intermediate calender rolls break away from the block seat that reversal of the natural order of things is installed in this case simultaneously, make roll change more inconvenient; 4, since joint and the working roll diameter of axle for excessively to cooperate, when interference occurring, the dismounting and change swivel joint can very difficultly maybe can not be dismantled.

Summary of the invention

For overcoming the deficiencies in the prior art, it is a kind of with connection, rotation, the spacing traveling-type revolving joint that effectively combines between swivel joint and working roll, the intermediate calender rolls that goal of the invention of the present invention is to provide, with can convenient roll change after being implemented in stretch bending-straightening machine roller system and breaking down and improve the purpose in its life-span.

Technical scheme of the present invention is characterised in that: on the external cylindrical surface of the big end end of coupking shaft combination bearing is housed, combination bearing is formed by needle bearing and thrust bearing combination, the needle bearing of combination bearing is contained in the macropore of fittings body, the aperture of macropore other end end-fitting body is embedded with alloy body, coupking shaft is a ladder-type structure, its miner diameter end end is threaded, and the other end is with spring between the boss of combination bearing and coupking shaft, and spring overcoat has thrust sleeve.

The miner diameter end root of coupking shaft of the present invention has a boss.

During use, screw thread one end of swivel joint is screwed in the screwed hole of working roll or intermediate calender rolls, boss is close to the roller end face, alloy body in the fittings body keeps in touch with the end block seat of roller system under spring action, the shock effect that the roller play produces when having eliminated work, simultaneously between thrust sleeve and combination bearing and coupling spindle boss, keep certain clearance, can be heated in the time of guaranteeing roller work and freely extend.Because the combination bearing ratio of precision is higher, and bearing capacity is big, therefore, can avoids having the various faults that swivel joint is occurred now, and the roll breakage phenomenon no longer occur again, can effectively prolong the service life of joint and roller system; During replacing, only need to retreat with the push rod on the block seat that swivel joint contact and got final product convenient changing joint or working roll, intermediate calender rolls.

The present invention compared with prior art has the following advantages:

1, change conveniently: it is conveniently replaced joint or roller that the push rod on the end block seat that only needs to contact with swivel joint retreats;

2, stable performance: combination bearing is formed by needle bearing and thrust bearing combination, and axial carrying capacity is big, and the load effect that is not hit, and can keep stable, the operation reliably of swivel joint and roller;

3, life-span height: do not contact, fit tightly by the bigger boss of area between joint and the roller owing to have to impact by alloy body between end push rod and the joint, anti-loosing effect improves greatly, and the phenomenon of can effectively avoiding fractureing occurs.

4, be beneficial to roller system: the structure of working roll, intermediate calender rolls no longer needs axle journal, has avoided the roll breakage phenomenon fully, and having prolonged roller is service life, reduces the shutdown frequency of production line.

Description of drawings

Below in conjunction with accompanying drawing the present invention is further described:

Fig. 1 is a structure diagram of the present invention;

Fig. 2 is a user mode sketch of the present invention;

Fig. 3, Fig. 4, Fig. 5 are the prior art structure diagrams.

The specific embodiment

As shown in Figure 1, coupking shaft 1 is a ladder-type structure, and the miner diameter end end is threaded, be used for connecting with working roll, intermediate calender rolls, the A place boss area of coupking shaft 1 is bigger, can form big frictional force when the roller end face combines, and connects the problem of becoming flexible to solve swivel joint with roller; Coupking shaft 1 big end root is equipped with spring 3, and spring 3 outsides are with thrust sleeve 2, between spring 3 and thrust sleeve 2 and the coupking shaft 1 certain clearance are arranged; Combination bearing 4 also is equipped with in the big end limit portion of coupking shaft 1, and combination bearing 4 is formed by needle bearing and thrust bearing combination, and the needle bearing of combination bearing is contained in the macropore of fittings body, and the aperture of macropore other end end-fitting body is embedded with alloy body.In the application, spring 3 makes fittings body 5 keep in touch by the push rod of alloy body 6 with the end block seat, can eliminate and impact and wearing and tearing, but the end play safeguard work roller at thrust sleeve 2 two ends, intermediate calender rolls axial direction can be heated and freely extend, simultaneously, combination bearing 4 axial bearing capacities are big, and the influence that is not hit can reliably working; The replacing of swivel joint is very convenient, and only needing to retreat with the push rod on the block seat that swivel joint contacts is conveniently replaced joint and roller; Because of the endoporus of fittings body 5 is embedded with alloy body 6, anti-wear performance is improved, significantly reduced the rotation wearing and tearing that push rod contacts generation with it.

When the present invention uses, isolate coupking shaft 1 earlier, respectively that coupking shaft 1 is fastening with working roll and intermediate calender rolls one by one with spanner, again spring 3 is enclosed within the big end root of coupking shaft 1, outside spring 3, put thrust sleeve 2, at last with fittings body 5 and combination bearing 4 integral installations at the big end of coupking shaft 1 until touching spring 3.

As shown in Figure 2, be the user mode of swivel joint in the lower roll box.11 is preceding block seat; 12 is the working roll assembly that a working roll and two cover swivel joints are combined into; 13 is the intermediate calender rolls assembly that an intermediate calender rolls and two cover swivel joints are combined into, and has two covers; 14 is block seat, the 15th, and swivel joint shown in Figure 1.Swivel joint 15 keeps in touch with preceding block seat 11, block seat 14 respectively under the effect of spring, and between the end face of thrust sleeve and combination bearing and coupking shaft boss, keep certain clearance, can freely extend at axial direction to guarantee that working roll or intermediate calender rolls are heated when working, thereby can ensure operate as normal.When needs are changed working roll or intermediate calender rolls, carry out following dismantlement work: unscrew screw 7, three preceding push rods 10 withdraw from swivel joint 15 automatically under the effect of spring 9, at this moment the low-angle that working roll assembly 12 can be tilted just can unload, use again with quadrat method and unload intermediate calender rolls assembly 13, unload lower swivel 15 then.The step of dismounting swivel joint 15: combination bearing, fittings body and alloy body integral body are unloaded from coupking shaft gently, lay down thrust sleeve and spring again, with spanner coupking shaft is unloaded from roller at last.Change the back and recover the roller assembly assembling.Recovering box-packed joining in the following order of roller operates: two cover intermediate calender rolls assemblies 13 are placed on above the backing roll (not shown), working roll assembly 12 is placed on above the intermediate calender rolls assembly 13, screw screw 7, pressing plate 8 is pressed to swivel joint 15 simultaneously with 3 preceding push rods 10, and is fully fastening until screw 7.Like this, the roller box just can come into operation again.

Claims

1. traveling-type revolving joint, it is characterized in that: on the external cylindrical surface of the big end end of coupking shaft (1) combination bearing (4) is housed, combination bearing (4) is formed by needle bearing and thrust bearing combination, the needle bearing of combination bearing (4) is contained in the macropore of fittings body (5), the aperture of macropore other end end-fitting body (5) is embedded with alloy body (6), coupking shaft (1) is a ladder-type structure, its miner diameter end end is threaded, the other end is with spring (3) between the boss of combination bearing (4) and coupking shaft (1), the outer thrust sleeve (2) that is with of spring (3).

2. traveling-type revolving joint according to claim 1 is characterized in that: the miner diameter end root of coupking shaft (1) has a boss.