CN205497004U - Device is used to belt pulley location - Google Patents

Abstract

The utility model relates to a positioner, disclose a device is used to belt pulley location, including the frame, it has spacing hole to open in the frame, is equipped with the clamp plate in the frame, the axial direction sliding connection that spacing hole is followed to the clamp plate is in the frame, open on the clamp plate have with the trompil of eccentric shaft size assorted, the perforated wall and the eccentric shaft of clamp plate offset, still including setting up at the epaxial parallel key of off -centre, drive the keyway that has the cooperation parallel key on the clamp plate, the left side counterbalance of trompil on the clamp plate has first depression bar, the right side counterbalance of trompil on the clamp plate has the second depression bar, the meshing of first depression bar has first gear, a gear engagement has the second gear, the 2nd gear engagement has the second depression bar, a gear connection has the motor, this patent is compared with prior art, through the setting of trompil, parallel key and keyway, rotates the eccentric shaft and restricts, through the first gear of motor drive, restricts the axial motion of eccentric shaft, has prevented that the eccentric shaft is along with the drill bit moves together to the qualification rate of product has been improved.

Description

Belt pulley location device

Technical field

This utility model relates to a kind of positioner, relates to a kind of belt pulley location device.

Background technology

Belt pulley, belongs to hub class part, and general relative size is bigger, typically main to cast, to be forged in manufacturing process.What stock size was bigger is designed as the method with casting, and material is typically all cast iron (casting character is preferable), seldom with cast steel (casting character of steel is the best)；Stock size is less, can be designed as forging, and material is steel.Belt pulley is mainly used in the occasion of Long Distant Transmit power, also the output of some miniature diesel mechanomotive forces it is used in, when using belt pulley to drive diesel powered output, need on belt pulley to arrange an eccentric shaft, eccentric shaft is installed connecting rod, the piston for compressing diesel oil then installed by outfan at connecting rod, so that piston reciprocating ground compression diesel oil, so that diesel engine output power.

When the above-mentioned existing belt pulley with eccentric shaft is connected with connecting rod, it is by outputing mate with threaded holes on eccentric shaft and connecting rod, re-use what bolt was fixedly connected, therefore when casting or having forged the belt pulley with eccentric shaft, need to output screwed hole on eccentric shaft end face, and in the operation of perforate, for avoiding the screwed hole on eccentric shaft to open partially, need first to be positioned by the belt pulley with eccentric shaft.

Existing positioner, including frame, spacing hole is had in frame, frame is provided with the pressing plate controlled by cylinder, being inserted in the spacing hole of frame by the driving shaft of the belt pulley with eccentric shaft, belt pulley, with side (i.e. the opposite side of driving shaft on the belt pulley) surface of eccentric shaft, is directly to drive cylinder, cylinder band dynamic pressure plate compresses, and is then holed eccentric shaft end face by drilling machine (machining center).But in aforesaid way, on the one hand pressing plate can not be to the tension of eccentric wheel load, if tension, the wheel sheet of belt pulley, it would be possible to produce small deformation to direction close to each other, ultimately results in use, and belt pulley rotates will produce bigger vibration；On the other hand too tight due to can not press, therefore belt pulley has only been done axial limiting by pressing plate, and the thrust circumferentially rotating the most complete pressured plate is come spacing；In practical operation, drilling machine is adding man-hour, when drill bit of drilling machine contacts with eccentric shaft, drill bit of drilling machine will rotate on eccentric shaft and produce frictional force, and because eccentric shaft is only positioned in the axial direction, and also only positioned by the frictional force between belt pulley and frame in its circumference, so the frictional force of drill bit of drilling machine and eccentric shaft is it would be possible to more than frictional force between belt pulley and frame, rig will drive eccentric shaft to rotate together with eccentric, will eventually cause and process screwed hole and do not reach necessary requirement, cause product defective.

Utility model content

This utility model is intended to provide a kind of to be prevented belt pulley from carrying out axially and circumferentially rotates the belt pulley location device of direction motion.

Belt pulley location device in this programme, including frame, spacing hole is had in frame, frame is provided with pressing plate, described pressing plate is slidably connected in frame along the axial direction of spacing hole, the perforate matched with eccentric shaft size is had on pressing plate, the perforated wall of pressing plate offsets with eccentric shaft, also include the flat key being arranged on eccentric shaft, the keyway coordinating flat key is had on pressing plate, on pressing plate, the left side of perforate has the first depression bar mutually, on pressing plate, the right side of perforate has the second depression bar mutually, first depression bar is engaged with the first gear, first gear is engaged with the second gear, second gear is engaged with the second depression bar, first gear connects motor.

The know-why of this programme and have the beneficial effect that the skeleton that frame is whole belt pulley location device, is the basis for fast pulley.

Belt pulley is with the upper surface that one side is belt pulley of eccentric；Fetch the belt pulley with eccentric shaft, the driving shaft of belt pulley is arranged in the spacing hole of frame, pressing plate is slided into the upper surface of belt pulley, now the perforated wall of pressing plate offsets with eccentric shaft, when eccentric shaft is holed by the drill bit of rig, drill bit, by making eccentric shaft produce the rotation trend compared with pressing plate, will produce frictional force between perforated wall and the eccentric shaft of pressing plate, add the difficulty of eccentric shaft turns, thus reduce the probability of eccentric shaft turns；During flat key is inserted into keyway simultaneously, up hill and dale the trend of the rotation of eccentric shaft will be limited so that eccentric shaft will not rotate, thus the rotation of belt pulley is limited.

Start motor, driven by motor the first pinion rotation, first gear driven the first depression bar moves downward, first gear driven the second pinion rotation simultaneously, second gear driven the second depression bar moves downward, first depression bar and the second depression bar clamping platen downwardly together, belt pulley is compressed by pressing plate again, so that the axial of belt pulley is fixed；On the other hand pressing plate has certain pressure to belt pulley, belt pulley north of the Changjiang River pressing plate and frame are clamped in centre, stiction will be produced between pressing plate and belt pulley, also stiction is produced between belt pulley and frame, on direction, belt pulley is defined circumferentially rotating further so that belt pulley is more stable.

Compared with prior art, this positioner, by perforate, flat key and the setting of keyway, eccentric shaft turns is limited, driving the first gear by motor, the axially-movable to eccentric shaft limits, it is therefore prevented that when eccentric shaft is processed screwed hole, eccentric shaft moves together along with drill bit, thus improves the qualification rate of product.

Further, between pressing plate and frame, connection has spring.The setting of spring, can make frame when for installing belt pulley, and pressing plate is in the top of spacing hole, and higher than Pulley shaft to height, facilitate the installation of belt pulley.

Further, perforate is provided with rubber blanket, and rubber blanket offsets with eccentric shaft.The setting of rubber blanket, it is therefore prevented that the pressing plate wall in perforate directly contacts with eccentric shaft, thus decrease the abrasion to pressing plate and eccentric shaft, extend the service life of pressing plate and eccentric shaft；On the other hand, rubber blanket has elastic deformation, can be tighter with what eccentric shaft offseted, further increases the stability of eccentric shaft.

Further, frame is provided with the slide rail of the axial direction along spacing hole, and pressing plate is slidably connected on slide rail.The setting of slide rail, facilitates the upper and lower slip of pressing plate.

Further, frame being fixedly connected with the limited block equal with belt pulley axial height, limited block offsets with pressing plate.When pressing plate is pressed by depression bar, pressing plate will all apply pressure to belt pulley and limited block so that the stress surface of pressing plate bottom surface increases, and add the fulcrum of pressing plate bottom surface stress, thus improve the stability of pressing plate.

Accompanying drawing explanation

Fig. 1 is the structural representation of this utility model belt pulley location device embodiment；

Fig. 2 is the enlarged drawing of part A in Fig. 1.

Detailed description of the invention

Below by detailed description of the invention, this utility model is described in further detail:

Reference in Figure of description includes: frame 1, limited block 2, pressing plate 3, slide rail the 4, first depression bar the 5, second depression bar 6, eccentric shaft 7, rubber blanket 8, flat key 9, stage clip 10, belt pulley 11, driving shaft the 12, first gear the 13, second gear 14, motor 15.

nullEmbodiment is basic with reference to shown in Fig. 1 and Fig. 2: belt pulley location device，Including frame 1，Spacing hole is had in frame 1，The slide rail 4 of the axial direction along spacing hole it is bolted in frame 1，Pressing plate 3 is slidably connected on slide rail 4，Connect between pressing plate 3 and frame 1 and have stage clip 10，The perforate matched with eccentric shaft 7 size is had on pressing plate 3，Rubber blanket 8 it is bonded with in perforate，Rubber blanket 8 offsets with eccentric shaft 7，The limited block 2 equal with belt pulley 11 axial height it is welded with in frame 1，Limited block 2 offsets with pressing plate 3，Also include the flat key 9 being arranged on eccentric shaft 7，Flat key 9 is when belt pulley 11 casts or forges，Integrated with belt pulley 11，The keyway coordinating flat key 9 is had on pressing plate 3，On pressing plate 3, the left side of perforate has the first depression bar 5 mutually，On pressing plate 3, the right side of perforate has the second depression bar 6 mutually，First depression bar 5 and the second depression bar 6 are all slidably connected in frame 1，First depression bar 5 is engaged with the first gear 13，First gear 13 is engaged with the second gear 14，Second gear 14 is engaged with the second depression bar 6，First gear 13 connects motor 15.

Fetch the belt pulley 11 with eccentric shaft 7, the driving shaft 12 of belt pulley 11 is arranged in the spacing hole of frame 1, start motor 15, motor 15 drives the first gear 13 to rotate, first gear 13 drives the first depression bar 5 to move downward, first gear 13 drives the second gear 14 to rotate simultaneously, second gear 14 drives the second depression bar 6 to move downward, first depression bar 5 moves downwardly together with the second depression bar 6 and contacts with pressing plate 3, and press pressing plate 3 and move downward, first depression bar 5 and the second depression bar 6 continue to move downward, pressing plate 3 moves downward along with the first depression bar 5 and the second depression bar 6, till the upper surface of the bottom surface and belt pulley 11 that always move to pressing plate 3 offsets, stage clip 10 is in compressive state, so that the axially-movable of belt pulley 11 is fixed；Now on the perforated wall of pressing plate 3, the rubber blanket 8 of bonding offsets with eccentric shaft 7, when eccentric shaft 7 is holed by the drill bit of rig, drill bit will make eccentric shaft 7 produce the rotation trend compared with pressing plate 3, will produce frictional force between perforated wall and the eccentric shaft 7 of pressing plate 3, adds the difficulty that eccentric shaft 7 rotates；Flat key 9 is inserted in keyway simultaneously, the trend of the rotation of eccentric shaft 7 will be limited up hill and dale so that eccentric shaft 7 will not rotate, thus the rotation of belt pulley 11 is limited.

When having fixed belt pulley 11, rig is used eccentric shaft 7 to be holed, after boring, belt pulley 11 is taken off from hold down gag, use cutting machine to be cut away by flat key 9, and use polisher to be polished smooth on the surface of eccentric shaft 7, thus finished belt wheel 11 will be obtained.

Above-described is only embodiment of the present utility model, and in scheme, the known general knowledge such as concrete structure and characteristic too much describes at this.Should be understood that; for a person skilled in the art, on the premise of without departing from this utility model structure, it is also possible to make some deformation and improvement; these also should be considered as protection domain of the present utility model, and these are all without affecting effect and the practical applicability that this utility model is implemented.The protection domain that this application claims should be as the criterion with the content of its claim, and the detailed description of the invention in description etc. records the content that may be used for explaining claim.

Claims (5)

1. belt pulley location device, including frame, spacing hole is had in frame, frame is provided with pressing plate, it is characterized in that, described pressing plate is slidably connected in frame along the axial direction of spacing hole, the perforate matched with eccentric shaft size is had on pressing plate, the perforated wall of pressing plate offsets with eccentric shaft, also include the flat key being arranged on eccentric shaft, the keyway coordinating flat key is had on pressing plate, on pressing plate, the left side of perforate has the first depression bar mutually, on pressing plate, the right side of perforate has the second depression bar mutually, first depression bar is engaged with the first gear, first gear is engaged with the second gear, second gear is engaged with the second depression bar, first gear connects motor.

Belt pulley location the most according to claim 1 device, it is characterised in that: connect between described pressing plate and frame and have spring.

Belt pulley location the most according to claim 2 device, it is characterised in that: described perforate is provided with rubber blanket, and rubber blanket offsets with eccentric shaft.

Belt pulley location the most according to claim 3 device, it is characterised in that: described frame is provided with the slide rail of the axial direction along spacing hole, and pressing plate is slidably connected on slide rail.

Belt pulley location the most according to claim 4 device, it is characterised in that: being fixedly connected with the limited block equal with belt pulley axial height in described frame, limited block offsets with pressing plate.