CN210661261U - Cantilever type eccentric mechanism - Google Patents

Abstract

The utility model provides a cantilever type eccentric mechanism, which is characterized in that the eccentric mechanism comprises an eccentric disc, an eccentric slide block, a transmission part and a shaft, wherein the transmission part is sleeved at one end of the shaft and can be connected with an external power mechanism to drive the shaft to rotate; the eccentric disc is detachably arranged at the end part of the shaft through a transmission piece, the shaft does not pass through the circle center of the eccentric disc, and the transmission piece rotates and drives the eccentric disc to rotate; the eccentric slide block is detachably arranged on the eccentric disc and can slide along the radial direction of the eccentric disc. The eccentric disc of the mechanism is cantilever type, so that the mechanism has the advantage of convenient disassembly and assembly, and meanwhile, the eccentric slide block on the cantilever type eccentric disc can slide in the radial range of the eccentric disc to realize the precise adjustment of large eccentricity. According to the field requirement, the eccentric disc can be continuously optimally designed, and the combination of a multi-eccentric slide way and a multi-eccentric slide block is realized, so that the motion requirements of single/double or more eccentric mechanisms of different types on the field can be met.

Description

Cantilever type eccentric mechanism

Technical Field

The utility model relates to a mechanical component technical field, in particular to cantilever type eccentric mechanism.

Background

In the non-cantilever type eccentric mechanism in the prior art, a shaft needs to penetrate through the circle center of an eccentric disc, the shaft end penetrates through the circle center of the eccentric disc to cause the position of the circle center of the eccentric disc to be blocked, an eccentric slide block arranged on the eccentric disc can only adjust the eccentric distance within the radius range of the eccentric disc, only one set of eccentric mechanism can be driven on one eccentric shaft, when the eccentric slide block rotates to the far end of a connecting rocker arm, the eccentric slide block needs to be detached to adjust the eccentric distance, and especially when the site needs to share one set of main transmission and simultaneously drive two sets of eccentric mechanisms to synchronously move, the structure problem is often limited and cannot be implemented, the eccentric distance adjusting mode is time-consuming and labor-consuming, and the.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cantilever type eccentric mechanism, the eccentric disc of this mechanism has the advantage of making things convenient for the dismouting, and the eccentric slider on the cantilever type eccentric disc can be followed the radial within range slip realization big eccentricity's of eccentric disc precision adjustment simultaneously, possesses the function that same drive mechanism arranged two sets of eccentric mechanism of drive simultaneously, and two sets of eccentric mechanism share same slide, has compact structure, and it is big to adjust convenience and control range, the strong advantage of suitability. According to the field requirements, the eccentric discs can be continuously optimally designed, the same slide way is not shared, and the combined slide way is designed into multi-slide way arrangement with different angles, so that the motion requirements of single/double or more eccentric mechanisms of different types on the field can be met.

The utility model discloses a realize through following technical scheme:

a cantilever type eccentric mechanism is characterized in that the eccentric mechanism comprises an eccentric disc, an eccentric sliding block, a transmission piece and a shaft, wherein the transmission piece is sleeved at one end of the shaft and can be connected with an external power mechanism to drive the shaft to rotate;

the eccentric disc is detachably arranged at the end part of the shaft through the transmission piece, the shaft does not penetrate through the circle center of the eccentric disc, and the transmission piece rotates and drives the eccentric disc to rotate;

the eccentric sliding block is detachably arranged on the eccentric disc and can slide along the radial direction of the eccentric disc.

Further, in the above-mentioned cantilever type eccentric mechanism, the eccentric disc is split type, is formed by a plurality of same or different shapes's board butt joint, and per two board butt joint department all is formed with eccentric slide, each be equipped with one or two in the eccentric slide slidable eccentric slider, eccentric slider with eccentric slide cooperation department is equipped with the oil storage tank.

Further, in the above-mentioned cantilever type eccentric mechanism, the eccentric disc is split type, and is formed by two identical semi-circular plates in mirror image butt joint, and the butt joint department is formed with the eccentric slide way, the eccentric slider is located in the eccentric slide way slidably.

Further, in the above-mentioned cantilever type eccentric mechanism, the eccentric slide block is disposed in the eccentric slide way, a penetrating adjusting screw hole is disposed on the eccentric slide block along the direction of the eccentric slide way, and a pin hole is disposed on the eccentric slide block and perpendicular to the direction of the eccentric slide way.

Further, in the above-mentioned cantilever type eccentric mechanism, the eccentric mechanism further includes an eccentric adjusting mechanism, the eccentric adjusting mechanism includes an eccentric adjusting wire, the eccentric adjusting wire is detachably disposed in the eccentric slideway, the eccentric adjusting wire is provided with a screw matched with the screw hole of the adjusting wire, and the eccentric adjusting wire passes through the screw hole of the adjusting wire and is in screw connection with the eccentric slider.

Further, in the above-described cantilever-type eccentric mechanism, the eccentric disc is provided at one end or both ends of the shaft.

Further, in the above-mentioned cantilever type eccentric mechanism, the transmission member includes a transition disc, and the transition disc is concentrically disposed with the eccentric disc and connected to the eccentric disc by a bolt.

Further, in the above-mentioned cantilever-type eccentric mechanism, the transmission member further includes a sprocket wheel, and the sprocket wheel is sleeved on the shaft and is concentrically arranged with the eccentric disc.

Further, in the above-mentioned cantilever type eccentric mechanism, the transmission member further includes a hinge sleeve, the hinge sleeve is sleeved on the shaft, and the outer wall of the hinge sleeve is sleeved on the sprocket.

Further, in the above cantilever type eccentric mechanism, the hinge sleeve includes an upper half sleeve and a lower half sleeve which are connected in an opening and closing manner, and two tenons and grooves which are mutually matched are arranged on the radial outer circle matching surface of the upper half sleeve and the lower half sleeve, a key groove is arranged on the inner wall of the hinge sleeve, and a flywheel is further arranged on the outer surface of the hinge sleeve.

The utility model discloses an useful part lies in: the utility model provides a pair of cantilever type eccentric mechanism has: the eccentric disc and the shaft are arranged to be cantilever type, so that the eccentric disc is convenient to disassemble, assemble and maintain, and meanwhile, the eccentric slide block on the cantilever type eccentric disc can slide in the radial range of the eccentric disc to realize the adjustment of the eccentricity, so that the eccentric disc has the advantages of convenience in adjustment and large adjustment range.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. Wherein:

fig. 1 is a schematic structural view of a cantilever type eccentric disc provided by the present invention;

FIG. 2 is an assembly view of the eccentric disc of the present invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic structural view of the eccentric disc of the present invention;

FIG. 5 is a left side view of FIG. 4;

FIG. 6 is a schematic structural view of the press block provided by the present invention;

fig. 7 is a schematic structural view of an eccentric slider provided by the present invention;

fig. 8 is an assembly view of the eccentric slider according to the present invention;

fig. 9 is a schematic structural diagram of a shaft according to the present invention.

Description of reference numerals:

1-an eccentric disc; 11-eccentric disc screw hole; 12-a briquetting fixing hole; 2-eccentric slide block; 21-upper locknut; 22-lower locknut; 23-adjusting screw holes; 24-pin shaft holes; 3-axis; 4-briquetting; 5-eccentric adjusting wire; 51-a copper sleeve; 6-a transition disc; 7-a sprocket; 8-a hinged sleeve; 9-pin shaft.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. Each example is provided by way of explanation of the invention and not limitation of the invention. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present invention encompass such modifications and variations as fall within the scope of the appended claims and equivalents thereof.

In the description of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The terms "connected", "connected" and "disposed" used in the present invention should be understood in a broad sense, and may be, for example, either fixedly connected or detachably connected; they may be directly connected or indirectly connected through intermediate members, and specific meanings of the above terms will be understood by those skilled in the art as appropriate.

The utility model discloses a cantilever type eccentric mechanism. As shown in fig. 1 to 9, wherein fig. 1 is a schematic structural view of a cantilever-type eccentric disc provided by the present invention; FIG. 2 is an assembly view of the eccentric disc of the present invention; FIG. 3 is a left side view of FIG. 2; FIG. 4 is a schematic structural view of the eccentric disc of the present invention; FIG. 5 is a left side view of FIG. 4; FIG. 6 is a schematic structural view of the press block provided by the present invention; fig. 7 is a schematic structural view of an eccentric slider provided by the present invention; fig. 8 is an assembly view of the eccentric slider according to the present invention; fig. 9 is a schematic structural diagram of a shaft according to the present invention.

As shown in fig. 1, the eccentric mechanism includes an eccentric disc 1, an eccentric slider 2, a transmission member, and a shaft 3. The utility model discloses lie in with prior art's difference, adopt among the prior art the rotation that drives the eccentric disc with the direct centre of a circle that passes the eccentric disc of axle, and for guaranteeing the joint strength between eccentric disc and the axle, set up the eccentric disc into the integral type structure among the prior art, the axle head this moment passes the centre of a circle of eccentric disc, cause the sliding range that slides the eccentric slider of adjusting the eccentricity on the eccentric disc limited (can only slide in the radius within range), it is comparatively loaded down with trivial details to adjust when eccentric mechanism stops transporting through the eccentric slider in the centre of a circle. Different from the prior art, the utility model discloses set up the eccentric disc into the cantilever type, one pot head at the axle is equipped with the driving medium, the eccentric disc locates the one end of axle through the driving medium, the axle head can be with the indirect fixed connection of eccentric disc without passing the centre of a circle of eccentric disc this moment, and set up the eccentric disc split type, set up the eccentric slide in the centre of split type eccentric disc, the eccentric slider can realize sliding along the diameter range of eccentric disc in locating the eccentric slide, the sliding range of eccentric slider has been increased, the adjusting range of eccentricity has been increased, the convenience that the eccentric slider adjusted when the eccentric mechanism stopped transport has also been increased; just the utility model discloses can also not drive the eccentric disc rotation through the rotation of axle, but it is rotatory to drive axle and eccentric disc again after being connected with external power unit through the driving medium, so set up the life that can increase the axle.

Further, the utility model provides a split type eccentric disc can be formed by the concatenation of the same or different board of a plurality of shapes, and every two board butt joints department all is formed with eccentric slide. For example, the eccentric disc can be formed by splicing two plates with the same or different shapes, or three or four plates with the same or different shapes, an eccentric slide way is formed at the splicing position of every two plates, one or two eccentric slide blocks can be arranged in each eccentric slide way, and each eccentric slide block can be connected with an external mechanism. When an eccentric disc drives many sets of external mechanism motion simultaneously, can realize avoiding the interference phenomenon that the mutual motion produced between each external mechanism through reasonable structural design, consequently the utility model provides a cantilever type eccentric mechanism has simple structure and the high characteristic of work efficiency.

When the eccentric disc is formed by splicing more than two plates, only one eccentric slide block can be arranged in the eccentric slide way formed between the plates, and the plurality of eccentric slide ways are combined and designed to be arranged at different angles, so that the requirements of single/double or more external mechanisms needing eccentric motion in different types on site can be met. When the eccentric disc is formed by splicing a plurality of plates, the rotation of the eccentric disc can be reciprocating rotation within a certain angle range instead of continuous rotation in one direction. When the eccentric disc is provided with only one eccentric slideway and only one eccentric slide block is arranged in the eccentric slideway, the rotating direction and the rotating angle of the eccentric disc can be continuous. In particular, the above-mentioned transmission elements may comprise a transition disc 6, a sprocket wheel 7 and an articulation sleeve 8. The utility model discloses an one end of axle 3 is located to the driving medium cover, eccentric disc 1 is connected with the driving medium, and realize fixed connection with axle 3 through the driving medium, that is to say that axle 3 does not pass the centre of a circle of eccentric disc 1 and is connected with it, the one end of axle 3 is located to the mode of cantilever type of eccentric disc 1 promptly, locate in eccentric disc 1 eccentric slider 2 slidable, be equipped with the round pin axle on the eccentric slider 2, the round pin axle can be connected with mechanisms such as connecting rod, circular motion is done thereupon to eccentric slider 2 when eccentric disc 1 pivoted, the mechanism of being connected with eccentric slider 2 this moment realizes mechanical motion (can be for periodic swing etc.) under eccentric slider 2's drive.

Further, as shown in fig. 2 to 5, the eccentric disc 1 in this embodiment is a split type, and is formed by two identical semi-circular plates that are arranged in a mirror image manner and butted, and an eccentric slide way is formed at the butt joint of the two semi-circular plates, and the eccentric slide block 2 is arranged in the eccentric slide way and can reciprocate linearly along the eccentric slide way. In this embodiment, an eccentric slider 2 is provided in the eccentric slide. In other embodiments, two eccentric sliding blocks 2 may be arranged in the eccentric sliding way, and each eccentric sliding block 2 is connected with one set of external mechanism, so that two sets of external mechanisms can be driven to move simultaneously. All be equipped with the recess in the upper and lower both ends of eccentric disc 1, the diameter direction of two eccentric discs 1 leaves gapped butt joint back, the butt joint is also realized to the recess at both ends about eccentric disc 1, recess bottom all is equipped with briquetting fixed orifices 12 about this, locate in the recess of eccentric disc 1 formation after the concatenation like the briquetting 4 shown in figure 6, be equipped with the hole that corresponds with briquetting fixed orifices 12 on briquetting 4, can be with briquetting 4 and eccentric disc 1 fixed connection through the bolt, and then realize the fixed connection of eccentric disc 1, in order to ensure the stable connection of eccentric disc 1. And the bolt (which can be an inner hexagon bolt) is used for connecting and fixing the two semicircular plates, so that the eccentric disc 1 is formed into an independent rigid integral disc-shaped component.

A structure similar to a disc is formed behind the two eccentric discs 1, eccentric disc screw holes 11 concentric with the disc structure are formed in the disc structure, and the eccentric disc screw holes 11 are uniformly distributed along the circle center and used for penetrating through bolts to be connected with the shaft 3 in a cantilever mode (the eccentric discs 1 are indirectly connected with the shaft 3).

As shown in fig. 7 and 8, a through adjusting wire screw hole 23 is provided on the eccentric slider 2 along the direction of the eccentric sliding way for passing through the eccentric adjusting wire 5. A pin shaft hole 24 is arranged on the eccentric slide block 2 along the direction vertical to the eccentric slide way and is used for connecting the pin shaft 9. The eccentric sliding block 2 is provided with a pin shaft 9 in a rotating mode, and is fixed by a locking nut and then eccentrically arranged in an eccentric slideway to form a group of sliding friction moving pairs, and the moving freedom degrees of the eccentric sliding block 2 in the left direction and the right direction are limited to prevent the eccentric sliding block from rotating in the circumferential direction.

Further, be equipped with transition dish 6 between axle 3 and eccentric disc 1, transition dish 6 cover is located on the axle 3, and is equipped with the screw that corresponds with eccentric disc screw 11 on the transition dish 6, and the bolt passes transition dish 6 and eccentric disc screw 11 back will transition dish 6 and eccentric disc 1 fixed connection, and then realize that the cantilever of eccentric disc 1 and axle 3 is connected. A transition disc 6 concentric with the eccentric disc 1 is arranged on one side end face (the end face along the diameter direction, which is the end face of the eccentric disc 1 facing the paper in fig. 1) of the eccentric disc 1, and the eccentric disc 1 is fixed on the transition disc 6 through a hexagon socket head cap screw. A sliding bearing seat is arranged on one side of the transition disc 6, and the eccentric disc 1 is concentrically arranged on the end face of the outer side of the transition disc 6 in a cantilever manner.

Further, the above-described eccentric mechanism further includes a sprocket 7. The chain wheel 7 is sleeved on the shaft 3 and is connected with the shaft 3 in a non-sliding mode, the chain wheel 7 can be used for externally connecting a chain, and the externally connected chain can also be connected with an externally connected power mechanism and used for providing power for rotation of the eccentric mechanism. Further, a hinge sleeve 8 is provided between the sprocket 7 and the shaft 3. Specifically, one end of the shaft 3 passes through the hinge sleeve 8, and the other end is provided on the sliding bearing seat through a sliding bearing. After the hinge sleeve 8 is sleeved on one end of the shaft 3, the transition disc 6 and/or the chain wheel 7 can be sleeved outside the hinge sleeve. Namely, the outer circumference of the hinged sleeve 28 is provided with the transition disc 6 and/or the chain wheel 7, the inner circumference of the hinged sleeve 28 is provided with a key groove, a flat key is arranged in the key groove and is used for being matched with the flat key of the shaft 3, and under the action of power, the eccentric disc 1 performs synchronous circumferential rotary motion along with the transition disc 6, the hinged sleeve 8, the chain wheel 7 and the shaft 3. In alternative embodiments, the plain bearings herein may be replaced with other types of bearings.

Specifically, under the action of external power, the chain wheel 7 rotates to drive the transition disc 6, the hinge sleeve 8 and the shaft 3 to rotate at the same time, and further drive the eccentric disc 1 to rotate. The chain wheel 7 can adopt a universal 28A sleeve roller chain to be in remote flexible connection with a cantilever type eccentric mechanism, the transmission form belongs to typical meshing transmission in mechanical design, and the chain wheel has the characteristics of simple integral structure, accurate and reliable average speed ratio and low requirement on relative installation precision. Meanwhile, due to the remarkable advantages of small axial tension and large transmission center distance, the transmission mechanism has strong adaptability to severe working conditions and long service life, can reliably transmit rotary motion between two parallel shafts in a long distance, is suitable for the structural design of the transmission mechanism and the actuating mechanism in long-distance split arrangement, has flexible and changeable spatial layout, can be selectively arranged and combined according to actual working conditions on site, and is efficient, reliable, convenient and quick.

As shown in fig. 9, the cantilever type eccentric mechanism of the present invention is a split type combined assembly structure, and has an eccentric adjusting mechanism for fine-tuning the eccentric distance of the eccentric mechanism. The eccentric adjusting mechanism adopts a design layout scheme that a screw is actively supported and rotated (an eccentric adjusting wire 5 is rotated), and a nut (an eccentric sliding block 2) is driven to reciprocate linearly. The eccentric adjustment mechanism includes an eccentric adjustment wire 5. In eccentric slide was located to eccentric adjusting wire 5, and both ends all were equipped with copper sheathing 51 about and, on two copper sheathing 51 were fixed in upper and lower briquetting 4 respectively, eccentric adjusting wire 5 was connected copper sheathing 51 through both ends and can be stably located eccentric slide in, and copper sheathing 51 can be used for supporting eccentric adjusting wire 5 in the stability of vertical direction, alleviates frictional resistance, also can restrict eccentric adjusting wire 5 at the axial degree of freedom. The eccentric adjusting wire 5 is provided with a spiral matched with the eccentric sliding block 2, the eccentric sliding block 2 is provided with a through hole with threads, the eccentric adjusting wire 5 penetrates through the through hole to be in threaded connection with the eccentric sliding block 2, specifically, the eccentric adjusting wire 5 and the eccentric sliding block 2 are triangular thin-tooth bidirectional conduction sliding spirals, and the circumferential rotating motion of the spirals is converted into the axial reciprocating linear motion of the eccentric sliding block 2 through the biaxial fixing and rotating matching of the upper copper sleeve 51 and the lower copper sleeve 51, so that the eccentric adjusting mechanism is formed.

Further, when the eccentricity is manually adjusted in a fine mode, the antifriction supporting effect on the sliding bearing can be achieved. Considering the 'dead point' position of the multi-rod mechanism motion design and the continuity of the rotary motion, the subsequent improved design can increase the flywheel component, the flywheel with large specific gravity is sleeved on the outer surface of the hinged sleeve 8 and is firmly connected by a double flat key arranged at 90 degrees, and the continuity of the large moment of inertia of the flywheel drives the connecting rod mechanism to cross the designed 'dead point' position, so that the continuity and the smoothness of the motion are maintained.

When the eccentric adjusting wire 5 is rotated, the eccentric sliding block 2 is driven to correspondingly slide up and down in the eccentric slideway, namely, the eccentric sliding block makes reciprocating linear motion along the axial direction of the eccentric sliding block, so that the eccentric distance between the eccentric sliding block 2 and the center of a circle on the eccentric disc 1 is adjusted. The distance between the eccentric slide block 2 and the center of the circle on the eccentric disc 1 is changed, namely the actual eccentricity of the pin shaft on the eccentric slide block 2 is changed, so that the stroke of the external mechanism hinged with the pin shaft 9 is changed, and the purpose of finely adjusting and controlling the stroke of the external mechanism is achieved. After the eccentricity adjustment is finished, the eccentric sliding block 2 is locked on the eccentric adjusting wire 5 by using the upper locknut 21 and the lower locknut 22 which are arranged on the eccentric sliding block 2, so that the sudden change of the eccentricity of the cantilever type eccentric mechanism in the rotary motion process is prevented. In order to reduce the friction resistance, an S-shaped oil storage groove can be designed on the matching end surfaces of the two sides of the eccentric sliding block 2, and lithium-based lubricating grease is coated to form a sliding friction lubricating oil film layer.

Furthermore, in the cantilever type eccentric mechanism, the split type radial sliding bearing is adopted to support the shaft 3 to play a rigid supporting role, so that the moving freedom degree of the shaft 3 in two directions is limited, the circumferential rotation friction damping is slowed down, and the cantilever type eccentric mechanism has the advantages of simple structure, compact layout, good centering performance, layout space saving and convenient maintenance and operation. The sliding bearing seat is a split type radial sliding bearing seat. The main components are that the upper cover and the lower seat are designed into a step-shaped groove tenon matching structure, which is convenient for radial positioning, prevents the end face from moving in a staggered way and is tightened by bolts. The sliding bearing is arranged on the sliding bearing seat, and the sliding bearing and the shaft form a group of sliding friction pairs after being assembled, thereby playing the roles of system friction reduction and support. Preferably, the sliding bearing is made of a tin-zinc-lead bronze ZCuPb5Sn5Zn5 material inlaid with a solid graphite lubricating rod, has the characteristics of obvious low hardness, high plasticity and small elastic modulus, has good antifriction and wear resistance, high compression and impact fatigue strength and good impact toughness, and the solid graphite inlaid on the surface layer has a self-lubricating function, so that the sliding friction pair can ensure a small enough friction coefficient even in a boundary friction and dry friction state, and the power loss of a system is reduced. The sliding bearing is lubricated by periodically supplying oil from an oil filling hole M16X1.5 on the top by adopting lithium-based lubricating grease, and is convenient, efficient and quick.

Specifically, the hinge sleeve 8 in the cantilever type eccentric mechanism adopts a longitudinally split hinge type half-clamping structure, under the condition that the smoothness of the circumferential excircle is not influenced, the cross-over sleeve 8 is divided into an upper half sleeve and a lower half sleeve, two tenon and groove structures are designed on the excircle matching surface on one radial side of the two half sleeves and are hinged by a pin shaft to form a hinge type opening and closing mechanism capable of being opened and closed by 90 degrees from top to bottom, a double key groove arranged by 180 degrees is formed in the inner circular surface of the cross-over sleeve 8, a flat key is connected in a built-in mode, and the two half sleeves and the shaft 3 are fixedly connected into a rigid integral component by a group of hexagon socket head bolts after being assembled in place with the shaft 3 to be circumferentially positioned. When the hinge sleeve 8 rotates, the shaft 3 also rotates under the action of the connecting flat key. If the axial vibration quantity is larger during rotation, the axial baffle can be additionally arranged according to the actual working condition on site to carry out axial positioning. The inner and outer circumferential surfaces of the hinged sleeve 8 are H7/H6 matching surfaces, so the requirement of high finish is high, the outer circumferential surface of the hinged sleeve must adopt a built-in hinge and inner hexagon bolt structure design, and is provided with double key grooves which are symmetrically arranged at 180 degrees and are matched and connected with double keys of the transition disc 6 to transmit the rotation torque.

Furthermore, the inner circumferential surface of the hinge sleeve 8 is double-key transition connected with the shaft 3 and fixed circumferentially. The outer circumferential surface of the hinged sleeve 8 and the transition disc 6 also adopt a double-key transition fit radial bearing mode, the chain wheel 7 is directly sleeved on the outer circumferential surface of the hinged sleeve 28 in a mode of a middle through hole key-free connection and small clearance fit, and is connected with the transition disc 6 and the eccentric disc 1 through the hexagon socket head reamed bolts to form a rigid integral component, so that a cantilever type eccentric mechanism is formed. The shaft 3 of the above-mentioned eccentric mechanism rotates synchronously around the axis of the slide bearing. The chain wheel 7 can be connected with an external power mechanism through an external chain, and the chain can drive the chain wheel 7 to rotate, and meanwhile, the chain wheel 7 drives the hinged sleeve 8 connected with the chain wheel and the shaft 3 connected with the hinged sleeve 8 in a key mode to rotate. The hinged sleeve 8 is arranged in a one-side opening and closing mode so as to be convenient to disassemble and assemble.

Because the cantilever of the eccentric disc 1 is arranged at one end of the shaft 3, the other end of the shaft 3 is provided with the sliding bearing seat, preferably, the eccentric disc 1 is arranged at the outer end face of the shaft 3 in a cantilever mode, so that the shaft 3 bears larger bending stress, the shaft 3 has the risks of flexural deformation and fatigue fracture, and the system rigidity is influenced, therefore, the implementation scheme of virtual constraint is adopted on the motion design, a group of rigid supports are added, 2 sets of sliding bearing seats are adopted, the structural modes of homonymy, small spacing, side-by-side arrangement and double-fulcrum bearing are adopted, the cantilever beam bearing force arm is shortened, the system rigidity is improved, the occurrence of the contact condition of the shaft 3 and the edge of the sliding bearing caused by unbalance loading can be effectively prevented, the stress condition of a component.

Furthermore, a cantilever-type eccentric disc 1 can be arranged at the other end of the shaft 3, namely, two cantilever-type eccentric discs 1 are arranged at two ends of the same shaft 3, transmission parts between the two eccentric discs 1 and the shaft 3 are the same, the number of the eccentric slide ways and the number of the eccentric slide blocks 2 on the split-type eccentric disc 1 can be the same or different, and the adjustment and setting can be carried out according to actual working requirements.

Specifically, when power is externally connected, the specific motion and torque transmission between the power mechanism and the cantilever type eccentric mechanism is as follows: the bearing torque transmitted by the power mechanism is transmitted to a group of hexagon socket head cap reaming bolts through a chain wheel 7, and the transition disc 6 and the eccentric disc 1 are driven through the connection of the reaming bolts. The hinged sleeve 8 and the shaft 3 are coaxially and circumferentially fixed and coaxially and synchronously and circumferentially rotate under the sliding friction support of the 2 groups of sliding bearings at the same time, and the torque is output.

In this scheme design, the eccentric disc of this mechanism has the advantage that makes things convenient for the dismouting to have a bit, and the eccentric slider on the cantilever type eccentric disc can slide along the radial within range of eccentric disc simultaneously and realize the eccentricity adjustment, has the advantage that the regulation is convenient and control range is big. Meanwhile, part machining and assembling errors can be eliminated to the maximum extent, and the actual requirements of field working condition parameters are met. The design adopts the materials of aluminum bronze ZcuAL10Fe3 and tin-zinc-lead bronze ZCuPb5Sn5Zn5 with higher mechanical strength and wear resistance, and the like, and has the remarkable characteristics of low hardness, high plasticity, small elastic modulus, better running-in property, compliance and embeddability, and higher compressive and impact load fatigue strength.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A cantilever type eccentric mechanism is characterized in that the eccentric mechanism comprises an eccentric disc, an eccentric sliding block, a transmission piece and a shaft, wherein the transmission piece is sleeved at one end of the shaft and can be connected with an external power mechanism to drive the shaft to rotate;

the eccentric disc is detachably arranged at the end part of the shaft through the transmission piece, the shaft does not penetrate through the circle center of the eccentric disc, and the transmission piece rotates and drives the eccentric disc to rotate;

the eccentric sliding block is detachably arranged on the eccentric disc and can slide along the radial direction of the eccentric disc.

2. The cantilevered over-center mechanism of claim 1,

the eccentric disc is split type, is formed by the butt joint of a plurality of boards of the same or different shapes, and per two board butt joint department all is formed with eccentric slide, each be equipped with one or two in the eccentric slide slidable eccentric slider, eccentric slider with eccentric slide cooperation department is equipped with the oil storage tank.

3. The cantilevered over-center mechanism of claim 2,

the eccentric disc is split type, and is formed by two identical class semicircle boards in mirror image butt joint, and butt joint department is formed with eccentric slide, eccentric slider slidable ground is located in the eccentric slide.

4. The cantilevered over-center mechanism of claim 2,

the eccentric slide block is arranged in the eccentric slide way, a penetrating adjusting screw hole is formed in the eccentric slide block along the direction of the eccentric slide way, and a pin shaft hole is formed in the eccentric slide block and is perpendicular to the direction of the eccentric slide way.

5. The cantilevered over-center mechanism of claim 4,

the eccentric mechanism further comprises an eccentric adjusting mechanism, the eccentric adjusting mechanism comprises an eccentric adjusting wire, the eccentric adjusting wire is detachably arranged in the eccentric slide way, a screw matched with the screw hole of the adjusting wire is arranged on the eccentric adjusting wire, and the eccentric adjusting wire penetrates through the screw hole of the adjusting wire and is in threaded connection with the eccentric sliding block.

6. The cantilevered over-center mechanism of claim 1,

the eccentric disc is arranged at one end or two ends of the shaft.

7. The cantilevered over-center mechanism of claim 1,

the transmission part comprises a transition disc, and the transition disc and the eccentric disc are concentrically arranged and are connected with the eccentric disc through bolts.

8. The cantilevered over-center mechanism of claim 7,

the transmission part further comprises a chain wheel, and the chain wheel is sleeved on the shaft and is arranged concentrically with the eccentric disc.

9. The cantilevered over-center mechanism of claim 8,

the transmission part further comprises an articulated sleeve, the articulated sleeve is sleeved on the shaft, and the chain wheel is sleeved on the outer wall of the articulated sleeve.

10. The cantilevered over-center mechanism of claim 9,

the hinged sleeve comprises an upper half sleeve and a lower half sleeve which are connected in an opening-closing mode, two tenons and grooves which are matched with each other are arranged on the radial outer circle matching surfaces of the upper half sleeve and the lower half sleeve, a key groove is formed in the inner wall of the hinged sleeve, and a flywheel is further arranged on the outer surface of the hinged sleeve.

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