CN2908919Y

CN2908919Y - Polish rod driver

Info

Publication number: CN2908919Y
Application number: CN 200620001458
Authority: CN
Inventors: 王利明
Original assignee: SHANXI TIANXIANG MACHINERY CO Ltd
Current assignee: SHANXI TIANXIANG MACHINERY CO Ltd
Priority date: 2006-01-24
Filing date: 2006-01-24
Publication date: 2007-06-06
Anticipated expiration: 2016-01-24

Abstract

The utility model relates to a polished rod driver and belongs to the mechanical drive field. In the driver, a first bearing, a second bearing, a third bearing and a fourth bearing are coaxially arranged in a box in turn. Internal ring surface of the bearings is a convexity consisting of two inclines. A polished rod is arranged in a bearing hole and tightly fits one of the inclines of internal ring surface of the bearing. A cushion block and an elastic packing in a control mechanism are arranged on the box respectively. A release holder is arranged on one side with the cushion block box. A release lever is arranged on the release holder with tip close to cushion block. The polish rod driver is compact, usable, simple to operate, and is characterized in no clearance, noiselessness, high transmission efficiency, low running power loss, safety, automatic skidding in case of overload, no damage to other components, translational motion of the same pitch and different directions or different pitches and directions on the same polished rod; free movement of the polished rod after being released; dust prevention, antipollution and highly sealing and so on.

Description

The polished rod driver

Technical field

The utility model relates to a kind of polished rod driver, belongs to the mechanical transmissioning technology field.

Background technique

China generally still makes with feed screw nut and converts this traditional mechanical drive mode of straight line motion at present.The moving direction of nut and pitch depend on the rotation direction and the pitch of screw thread on the leading screw, and general district is limited to a direction, a kind of pitch.Want on same leading screw, to make nut to realize the motion of different direction, different pitches, just be difficult to realize.Because on same leading screw, can't add different rotation directions, different thread at all.Want nut is being free to travel on the leading screw on a certain accurate position with traditional kind of drive in addition,, also can't realize owing to be subjected to the restriction of leading screw pitch.

Leading screw and nut are sliding frictions in traditional kind of drive, and big more its frictional force of the load of nut is just big more, power consumpiton is just big more, and the wearing and tearing of leading screw, nut simultaneously are also fast more, in case there are wearing and tearing just to produce the gap, so just have influence on the precision of motion.In case the nut overburdening, will cause leading screw, nut damage, cause and scrap.Must lubricating oil filling (fat) in order to reduce friction and to wear and tear, so will pollute in some special industries.

Summary of the invention

The purpose of this utility model is to propose a kind of polished rod driver, changes the structure of existing leading screw, nut, makes it can be widely used in machine operation, conveyor belt object water conservancy diversion, the measuring equipment of three-dimensional computer control, the every field such as driving of double leaf electric door.

The polished rod driver that the utility model proposes comprises: casing, clutch shaft bearing, second bearing, the 3rd bearing, the 4th bearing, polished rod and control mechanism.Wherein clutch shaft bearing, second bearing, the 3rd bearing and the 4th bearing are coaxial successively is installed in the casing, be provided with locating pad between the clutch shaft bearing and second bearing and the 3rd bearing, be provided with locating pad between second bearing and the 3rd bearing and the 4th bearing, wherein clutch shaft bearing tilts 7～8 °, the second and the 3rd bearing is to the direction inclination equal angular opposite with clutch shaft bearing, and the 4th bearing is to the direction inclination equal angular identical with clutch shaft bearing.The inner ring surface of bearing is the convex surface that two inclined-planes are formed, and protrusion angle is 148 °.Polished rod is installed in the bearing hole, becomes drive fit with an inclined-plane of bearing inner ring face; Described control mechanism comprises release seat, release lever, cushion block and cushion, cushion block and cushion place on the casing the corresponding position, radially two ends with second bearing and the 3rd bearing respectively, discharge seat and be installed in a side that is provided with the cushion block casing, release lever is installed in and discharges on the seat, and cushion block is close in the end of release lever.

The polished rod driver of the utility model design, do not need leading screw, screw, only need a polished rod and this mechanism, with regard to variable sliding friction is rolling friction, save the energy greatly, reduced abrasion, improved efficient, becoming has tooth can skid automatically into the anodontia overload, and can move freely, and reaches desirable motion.The polished rod driver of the utility model design, compact structure, easy to use, simple to operate, and have: no clearance, noise free; The transmission efficiency height, the efficiency of operation loss is little; Safety, overburdening can be skidded automatically, do not damage other element; Can on same polished rod, finish the straight line motion of same pitch, different direction or different pitch, different direction; Can add eccentric release lever, discharge the back and can move freely along polished rod; Plurality of advantages such as dustproof, anti-pollution high-seal.The standard lead of driver is polished rod diameter * 0.5 or polished rod diameter * 0.4, polished rod diameter * 0.3, polished rod diameter * 0.2, polished rod diameter * 0.1, and special helical pitch can customize on request.

Description of drawings

Fig. 1 is the structural representation of the polished rod driver of the utility model design.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is that the B of Fig. 1 is to view.

Fig. 4 is the sectional view of bearing.

Among Fig. 1～Fig. 4, the 1st, casing, the 2nd, clutch shaft bearing, the 3rd, discharge seat, 4 is second bearings, and 5 is the 3rd bearings, and 6 is the 4th bearings, the 7th, polished rod, the 8th, locating pad, the 9th, pad elasticity, the 10th, cushion block, the 11st, release lever.

Embodiment

The polished rod driver that the utility model proposes, its structure such as Fig. 1, Fig. 2 and shown in Figure 3 comprise: casing 1, clutch shaft bearing 2, second bearing 4, the 3rd bearing 5, the 4th bearing 6, polished rod 7 and control structure.Wherein clutch shaft bearing 1, second bearing 4, the 3rd bearing 5 and the 4th bearing 6 is coaxial successively is installed in the casing 1, be provided with locating pad 8 between the clutch shaft bearing 1 and second bearing 4 and the 3rd bearing 5, also be provided with locating pad 8 between second bearing 4 and the 3rd bearing 5 and the 4th bearing 6, wherein clutch shaft bearing 2 tilts 7～8 °, the second and the 3rd bearing 3,4 is to the direction inclination equal angular opposite with clutch shaft bearing 1, and the 4th bearing 6 is to the direction inclination equal angular identical with clutch shaft bearing 1.The inner ring surface of four bearings is the convex surface that two inclined-planes are formed, and as shown in Figure 4, protrusion angle is 148 °.Polished rod 7 is installed in the bearing hole, becomes drive fit with an inclined-plane of bearing inner ring face; Described control mechanism comprises release seat 3, release lever 11, cushion block 10 and cushion 9, cushion block 10 and cushion 9 place on the casing 1 the corresponding position, radially two ends with second bearing 4 and the 3rd bearing 5 respectively, discharge seat 3 and be installed in a side that is provided with cushion block 10 casings, release lever 11 is installed in and discharges on the seat 3, and cushion block 10 is close in the end of release lever 11.

Below in conjunction with accompanying drawing, introduce an embodiment's of this polished rod driver working principle in detail:

First, second, third and fourth bearing is a ball bearing, as shown in Figure 4, its inner ring surface is processed into the convex surface with 148 ° of gradients, second and third the middle bearing and the relative surface that compresses polished rod 7 of first and second bearing at two ends, rotate polished rod 7 then, rotatablely moving of polished rod 7 converted to the straight line motion of polished rod driver with fricting transmissioning mode.

If need driver is free to travel to a certain position and does not rotate polished rod 7, be rotating to the release of the release lever 11 on the seat 3, by cushion block 10 centre two dish transformation of the way bearings 5 are discharged, can make driver be free to travel to desired location along polished rod.Then, again original position is got back in the release lever rotation, rotate polished rod 7 and get final product proper functioning.

Claims

1, a kind of polished rod driver is characterized in that this polished rod driver comprises: casing, clutch shaft bearing, second bearing, the 3rd bearing, the 4th bearing, polished rod and control mechanism; Described clutch shaft bearing, second bearing, the 3rd bearing and the 4th bearing are coaxial successively to be installed in the casing, be provided with locating pad between the clutch shaft bearing and second bearing and the 3rd bearing, be provided with locating pad between second bearing and the 3rd bearing and the 4th bearing, wherein clutch shaft bearing tilts 7～8 °, the second and the 3rd bearing is to the direction inclination equal angular opposite with clutch shaft bearing, and the 4th bearing is to the direction inclination equal angular identical with clutch shaft bearing; The inner ring surface of described bearing is the convex surface that two inclined-planes are formed, and protrusion angle is 148 °; Described polished rod is installed in the bearing hole, becomes drive fit with an inclined-plane of bearing inner ring face; Described control mechanism comprises release seat, release lever, cushion block and cushion, described cushion block and cushion place on the casing the corresponding position, radially two ends with second bearing and the 3rd bearing respectively, discharge seat and be installed in a side that is provided with the cushion block casing, release lever is installed in and discharges on the seat, and cushion block is close in the end of release lever.