CN115789179B

CN115789179B - Equidistant and unequally-spaced double-eccentric synchronous rotating shaft and assembled crankshaft structure thereof

Info

Publication number: CN115789179B
Application number: CN202310050557.5A
Authority: CN
Inventors: 李祺祺
Original assignee: Hebei Aoying Energy Technology Co ltd
Current assignee: Hebei Aoying Energy Technology Co ltd
Priority date: 2023-02-01
Filing date: 2023-02-01
Publication date: 2023-07-25
Anticipated expiration: 2043-02-01
Also published as: CN115789179A

Abstract

The invention discloses a double-eccentric synchronous rotating shaft with equal and unequal distances and an assembled crankshaft structure thereof, and belongs to the technical field of transmission mechanisms. The double-eccentric synchronous rotating shafts with equal and unequal distances comprise a base, a supporting plate is arranged on the base, an input shaft is rotatably arranged on the supporting plate, first eccentric wheels are arranged at two ends of the input shaft, a rotating shaft is arranged between the two first eccentric wheels, two second eccentric wheels are symmetrically arranged on the rotating shaft, an eccentric disc is sleeved outside the first eccentric wheels, a rolling bearing is arranged between the eccentric disc and the first eccentric wheels, and an eccentric block is fixedly connected outside the eccentric disc; the invention ensures that the stress and the transmission of the crankshaft are more reasonable and balanced through the vibration reduction assembly, has good structural stability, greatly prolongs the service life of equipment, simultaneously ensures that the oil supplementing assembly and the oil homogenizing assembly work when the vibration reduction assembly works, adds lubricating oil to the rolling bearing, ensures the normal operation of the transmission mechanism, and reduces the workload and the working difficulty of workers.

Description

Equidistant and unequally-spaced double-eccentric synchronous rotating shaft and assembled crankshaft structure thereof

Technical Field

The invention relates to the technical field of transmission mechanisms, in particular to a double-eccentric synchronous rotating shaft with equal and unequal distances and an assembled crankshaft structure thereof.

Background

Eccentric means that the center of the wheel is not at the rotation point, generally referred to as a circular wheel, which becomes an eccentric when the circle is not rotating about its own center. The eccentric wheel mechanism is evolved by a cam. Cam means a member, typically a driving member, having a curved profile or groove, that performs a constant velocity rotational motion or a reciprocating linear motion.

However, the existing eccentric wheel structure has obvious shaking during operation and poor stability, is unfavorable for long-term use of equipment, and needs frequent maintenance of staff; and the eccentric wheel is generally used antifriction bearing when being connected with the bent axle cooperation, and the heat that the bearing produced because of the friction can be reduced to the lubricating oil on the bearing, but general liquid lubricating oil volatilizes very fast in the heat dissipation process, need at every turn before the mechanism operation through the staff to the lubricating oil on the bearing inspect and manually add, the operation is inconvenient and loaded down with trivial details, has increased staff's work load.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a double-eccentric synchronous rotating shaft with equal and unequal distances and an assembled crankshaft structure thereof.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides an equidistance and unequally two eccentric synchronous rotation axles, includes the base, be provided with the backup pad on the base, it is provided with the input shaft to rotate in the backup pad, the both ends of input shaft all are provided with first eccentric wheel, two be provided with the axis of rotation between the first eccentric wheel, the symmetry is provided with two second eccentric wheels in the axis of rotation, first eccentric wheel outside cover is equipped with the eccentric disc, be provided with antifriction bearing between eccentric disc and the first eccentric wheel, the central axis of first eccentric wheel, eccentric disc and antifriction bearing is in same straight line, eccentric disc outside fixedly connected with eccentric block, still be provided with vibration damping subassembly between eccentric disc and the base, be provided with oil supplementing subassembly and even oily subassembly on the vibration damping subassembly.

Preferably, the vibration reduction assembly comprises a support fixedly arranged on the base, a fixing ring is fixedly connected to the support, a plurality of working pipes which are uniformly distributed in circumference are arranged on the fixing ring, a first piston is connected in a sliding mode in the working pipes, a first elastic element is arranged between the first piston and the inner wall of the working pipe, one side, deviating from the first elastic element, of the first piston is movably connected with a swinging rod, the vibration reduction assembly further comprises a fixing rod fixedly arranged on an eccentric disc, and the swinging rod is arranged on the outer side of the fixing rod in a rotating mode.

Preferably, a sealing plate is arranged between the eccentric disc and the first eccentric wheel, the eccentric disc is fixedly connected with the sealing plate, an annular groove matched with the sealing plate is formed in the first eccentric wheel, and an oil cavity is formed between the sealing plate and the eccentric disc and between the sealing plate and the first eccentric wheel.

Preferably, the working pipe is divided into an exhaust pipe and a drain pipe, and the number of the exhaust pipe and the drain pipe is the same.

Preferably, the number of the working pipes is six, the six working pipes are uniformly distributed on the fixed ring in circumference, and the number of the exhaust pipes and the liquid discharge pipes is three.

Preferably, the oil supplementing assembly comprises an oil storage pipe arranged on the liquid discharge pipe, an oil inlet groove is formed between the oil storage pipe and the liquid discharge pipe, a first one-way valve is arranged in the oil inlet groove, the liquid discharge pipe is communicated with an oil supplementing pipe, a second one-way valve is arranged on the oil supplementing pipe, and one end, far away from the liquid discharge pipe, of the oil supplementing pipe penetrates through the sealing plate and extends into the oil cavity.

Preferably, the even oily subassembly is including setting up the air duct in the blast pipe outside, the air duct intercommunication has the connecting pipe, sliding connection has the second piston in the connecting pipe, be provided with second elastic element between the inner wall of second piston and connecting pipe, the one end intercommunication that the air duct was kept away from to the connecting pipe has the U-shaped pipe, the both ends of U-shaped pipe all pass the closing plate and extend to the oil pocket, the upper and lower both sides of U-shaped pipe are provided with third check valve and fourth check valve respectively.

Preferably, the rolling bearing is lubricated by a lubricant having a low viscosity.

Preferably, the eccentric holes of the two second eccentric wheels are coaxial, the eccentric amounts are equal, and the directions of the two second eccentric wheels are opposite.

The invention also discloses an assembled crankshaft structure of the equidistant and unequally-spaced double-eccentric synchronous rotating shafts, which is characterized by comprising the equidistant and unequally-spaced double-eccentric synchronous rotating shafts.

Compared with the prior art, the invention provides the equidistant and unequally-spaced double-eccentric synchronous rotating shaft and the assembled crankshaft structure thereof, which have the following beneficial effects:

1. this equidistant and unequally two eccentric synchronous rotation axle and assembled bent axle structure thereof make the atress and the transmission of bent axle more reasonable balanced through the damping subassembly, and structural stability is good, very big improvement equipment's life, and the during operation of damping subassembly makes oil compensating subassembly and even oily subassembly work simultaneously, adds lubricating oil to antifriction bearing, guarantees drive mechanism's normal operating, reduces staff's work load and work degree of difficulty.

2. This equidistance and unequally two eccentric synchronous rotation axle and assembled bent axle structure thereof, when rotating along with the input shaft through first eccentric wheel, first eccentric wheel passes through antifriction bearing and drives the eccentric disc swing, and the eccentric disc swing in-process is to the pulling of swinging arms, and the swinging arms drives first piston and slides in the work pipe, and first elastic element takes place deformation, and then the rocking that produces when rotating first eccentric wheel is buffered, makes the structure atress more balanced, improves its stability.

3. This equidistant and unequally two eccentric synchronous rotation axle and assembled bent axle structure thereof, during operation through the damping subassembly, first piston reciprocating motion in the fluid-discharge tube, first piston extract the lubricating oil in the oil storage pipe and guide into the oil pocket through mending oil pipe, lubricate antifriction bearing, guarantee the normal operating of mechanism, reduce staff's work load and work degree of difficulty.

4. This equidistant and unequally two eccentric synchronous rotation axle and assembled bent axle structures thereof, during operation through the damping subassembly, first piston reciprocating motion in the blast pipe, first piston drive the air in the blast pipe, make second piston reciprocating motion in the connecting pipe, and then make the lubricating oil of oil pocket bottom side take out to the oil pocket upside and discharge, avoid flowing in the downside of oil pocket in a concentrated way through the lubricating oil of moisturizing oil pipe discharge, influence the homogeneity to antifriction bearing lubrication.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a portion of the structure of the present invention;

FIG. 3 is a schematic diagram of a portion of the structure of the second embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a first eccentric of the present invention;

FIG. 5 is a schematic view showing the external structure of the rotating shaft of the present invention;

FIG. 6 is a schematic view of the structure of the vibration damping assembly of the present invention;

FIG. 7 is a schematic view of the internal structure of the working tube of the present invention;

FIG. 8 is a schematic cross-sectional view of a first eccentric and an eccentric disc of the present invention;

FIG. 9 is an enlarged partial schematic view of portion A of FIG. 8 in accordance with the present invention;

FIG. 10 is a schematic view of a drain pipe according to the present invention;

fig. 11 is a schematic structural view of an exhaust pipe of the present invention.

In the figure: 1. a base; 101. a support plate; 102. a support; 103. a fixing ring; 2. an input shaft; 3. a first eccentric; 301. an annular groove; 4. a rotating shaft; 401. a second eccentric; 5. an eccentric disc; 6. a rolling bearing; 7. an eccentric block; 8. a working tube; 801. a first piston; 802. a first elastic element; 803. a swinging rod; 804. a fixed rod; 805. an exhaust pipe; 806. a liquid discharge pipe; 9. a sealing plate; 10. an oil storage pipe; 11. an oil inlet groove; 111. a first one-way valve; 12. oil supplementing pipe; 121. a second one-way valve; 13. an air duct; 131. a connecting pipe; 132. a second piston; 133. a second elastic element; 134. a U-shaped tube; 1341. a third one-way valve; 1342. and a fourth one-way valve.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, the double-eccentric synchronous rotating shaft with equal distance and unequal distance comprises a base 1, a supporting plate 101 is arranged on the base 1, an input shaft 2 is rotatably arranged on the supporting plate 101, two ends of the input shaft 2 are provided with first eccentric wheels 3, a rotating shaft 4 is arranged between the two first eccentric wheels 3, two second eccentric wheels 401 are symmetrically arranged on the rotating shaft 4, an eccentric disc 5 is sleeved outside the first eccentric wheels 3, a rolling bearing 6 is arranged between the eccentric disc 5 and the first eccentric wheels 3, central axes of the first eccentric wheels 3, the eccentric disc 5 and the rolling bearing 6 are in the same straight line, an eccentric block 7 is fixedly connected outside the eccentric disc 5, a vibration reduction assembly is further arranged between the eccentric disc 5 and the base 1, and an oil supplementing assembly and an oil homogenizing assembly are arranged on the vibration reduction assembly.

Specifically, when the input shaft 2 is rotated by external driving force, the input shaft 2 drives the first eccentric wheel 3 to rotate, the central axis of the first eccentric wheel 3 drives the rotating shaft 4 to rotate, the rotating shaft 4 drives the second eccentric wheel 401 to rotate when rotating, when the length of the crank is shorter, the rigidity and the strength of the mechanism are improved by increasing the diameter of a revolute pair at the joint of the crank and the frame, namely, the first eccentric wheel 3 and the second eccentric wheel 401 are arranged, but the shaking is obvious when the eccentric wheel rotates, the stress and the transmission of a crankshaft are more reasonably balanced through the vibration reduction assembly, the structural stability is good, the service life of equipment is greatly prolonged, meanwhile, the vibration reduction assembly works to enable the oil compensation assembly and the oil distribution assembly to automatically add lubricating oil to the rolling bearing 6, the normal operation of the transmission mechanism is ensured, and the workload and the working difficulty of workers are reduced.

Example 2

Referring to fig. 1, fig. 2, fig. 5, fig. 6 and fig. 7, on the basis of embodiment 1, further, the vibration damping assembly includes a support 102 fixedly arranged on the base 1, a fixing ring 103 is fixedly connected on the support 102, a plurality of working pipes 8 uniformly distributed in circumference are arranged on the fixing ring 103, a first piston 801 is slidably connected in the working pipes 8, a first elastic element 802 is arranged between the first piston 801 and the inner wall of the working pipes 8, one side of the first piston 801, which is far away from the first elastic element 802, is movably connected with a swinging rod 803, the vibration damping assembly further includes a fixing rod 804 fixedly arranged on the eccentric disc 5, and the swinging rod 803 is rotatably arranged on the outer side of the fixing rod 804.

Specifically, the first eccentric wheel 3 is rotatably arranged with the eccentric disc 5 on the outer side through the rolling bearing 6, so that the eccentric disc 5 swings instead of synchronously rotating along with the first eccentric wheel 3 when the first eccentric wheel 3 rotates, further the eccentric block 7 on the outer side of the eccentric disc 5 reciprocates, meanwhile, the swinging rods 803 in the plurality of working pipes 8 are pushed or pulled in the swinging process of the eccentric disc 5, the swinging rods 803 drive the first pistons 801 to slide in the working pipes 8, the first elastic elements 802 are stretched or compressed, the swinging amplitude generated by the eccentric wheel is buffered, the structural stress is more balanced, and the stability of the structure is improved.

Example 3

Referring to fig. 1, 2, 3, 4 and 8, on the basis of embodiment 2, further, a sealing plate 9 is disposed between the eccentric disc 5 and the first eccentric wheel 3, the eccentric disc 5 is fixedly connected with the sealing plate 9, an annular groove 301 matched with the sealing plate 9 is formed on the first eccentric wheel 3, and an oil cavity is formed between the sealing plate 9 and the eccentric disc 5 and between the sealing plate 9 and the first eccentric wheel 3.

Specifically, the rolling bearing 6 is lubricated by filling the liquid lubricant in the oil chamber, and the liquid lubricant is effectively prevented from being scattered by the arrangement of the sealing plate 9.

Example 4

Referring to fig. 1, 2, 8 and 10, the working pipe 8 is divided into the exhaust pipe 805 and the drain pipe 806 on the basis of embodiment 3, and the number of the exhaust pipes 805 and the drain pipes 806 is the same.

Further, the number of the working pipes 8 is six, the six working pipes 8 are uniformly distributed on the fixed ring 103 in circumference, and the number of the exhaust pipe 805 and the drain pipe 806 is three.

Further, the oil supplementing assembly comprises an oil storage pipe 10 arranged on a liquid discharge pipe 806, an oil inlet groove 11 is formed between the oil storage pipe 10 and the liquid discharge pipe 806, a first one-way valve 111 is arranged in the oil inlet groove 11, an oil supplementing pipe 12 is communicated with the liquid discharge pipe 806, a second one-way valve 121 is arranged on the oil supplementing pipe 12, and one end, far away from the liquid discharge pipe 806, of the oil supplementing pipe 12 penetrates through the sealing plate 9 and extends into the oil cavity.

Specifically, when the vibration reduction assembly works, the first piston 801 reciprocates in the liquid discharge pipe 806, the first piston 801 extracts lubricating oil in the oil storage pipe 10 and guides the lubricating oil into the oil cavity through the oil supplementing pipe 12, the rolling bearing 6 is automatically lubricated by adding oil, the liquid lubricating fluid is prevented from being volatilized rapidly due to heat generated by bearing friction, the normal operation of the mechanism is ensured, and the workload and the working difficulty of workers are reduced.

Example 5

Referring to fig. 1, fig. 2, fig. 8, fig. 9 and fig. 11, the equidistant and unequally spaced double eccentric synchronous rotating shafts, further, based on embodiment 4, the oil homogenizing assembly comprises an air duct 13 arranged at the outer side of the exhaust pipe 805, the air duct 13 is communicated with a connecting pipe 131, a second piston 132 is slidably connected to the connecting pipe 131, a second elastic element 133 is arranged between the second piston 132 and the inner wall of the connecting pipe 131, one end of the connecting pipe 131, which is far away from the air duct 13, is communicated with a U-shaped pipe 134, both ends of the U-shaped pipe 134 pass through the sealing plate 9 and extend into the oil cavity, and the upper side and the lower side of the U-shaped pipe 134 are respectively provided with a third one-way valve 1341 and a fourth one-way valve 1342.

Specifically, when the vibration reduction assembly works, the first piston 801 reciprocates in the exhaust pipe 805, the first piston 801 sucks air in the exhaust pipe 805, so that negative pressure is generated in the connecting pipe 131, the second piston 132 moves in the connecting pipe 131, in the process, lubricating oil at the bottom side of the oil cavity is extracted through the U-shaped pipe 134, after the first piston 801 resets, the second piston 132 also resets and discharges lubricating liquid extracted in the U-shaped pipe 134 to the upper side of the U-shaped pipe 134, the lubricating oil at the bottom side of the oil cavity is further circulated and pumped to the upper side of the oil cavity to be discharged, and the lubricating oil discharged through the oil supplementing pipe 12 is prevented from intensively flowing to the lower side of the oil cavity, so that the uniformity of lubricating the rolling bearing 6 is affected.

Example 6

With reference to fig. 1, 2 and 8, the lubricating of the rolling bearing 6 is performed by using lubricating oil having low viscosity on the basis of embodiment 1.

In particular, when the rotational speed of the input shaft 2 is too high, the lubricant having low viscosity can reduce friction loss.

Example 7

With reference to fig. 1, 2, 3 and 4, on the basis of embodiment 4, further, the eccentric holes of the two second eccentric wheels 401 are coaxial, the eccentric amounts are equal, and the directions of the two second eccentric wheels 401 are opposite.

Specifically, by setting two equidistant eccentric wheels, the two equidistant second eccentric wheels 401 synchronously rotate and have opposite directions, so that the driving mechanism can keep power balance, and the service life of the equipment is prolonged.

The invention also discloses an assembled crankshaft structure of the equidistant and unequally-spaced double-eccentric synchronous rotating shafts, which comprises the equidistant and unequally-spaced double-eccentric synchronous rotating shafts.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims

1. The assembled crankshaft structure with double eccentric synchronous rotating shafts comprises a base (1), wherein supporting plates (101) are symmetrically arranged on two sides of the base (1), an input shaft (2) is rotatably arranged on each supporting plate (101), and the assembled crankshaft structure is characterized in that one end of each input shaft (2) is provided with a first eccentric wheel (3), a rotating shaft (4) is arranged between the two first eccentric wheels (3), two second eccentric wheels (401) are arranged on the rotating shaft (4), an eccentric disc (5) is sleeved outside the first eccentric wheels (3), a rolling bearing (6) is arranged between each eccentric disc (5) and each first eccentric wheel (3), central axes of each first eccentric wheel (3), each eccentric disc (5) and each rolling bearing (6) are in the same straight line, an eccentric block (7) is fixedly connected to the outer side of each eccentric disc (5), an oil supplementing assembly and an oil homogenizing assembly are further arranged between each eccentric disc (5) and the base (1);

the vibration reduction assembly comprises a support (102) fixedly arranged on a base (1), a fixed ring (103) is fixedly connected to the support (102), a plurality of working pipes (8) which are uniformly distributed in circumference are arranged on the fixed ring (103), a first piston (801) is connected in a sliding manner in the working pipes (8), a first elastic element (802) is arranged between the first piston (801) and the inner wall of the working pipe (8), a swinging rod (803) is movably connected to one side, deviating from the first elastic element (802), of the first piston (801), and the vibration reduction assembly further comprises a fixed rod (804) fixedly arranged on an eccentric disc (5), and the swinging rod (803) is rotatably arranged on the outer side of the fixed rod (804);

a sealing plate (9) is arranged between the eccentric disc (5) and the first eccentric wheel (3), the eccentric disc (5) is fixedly connected with the sealing plate (9), an annular groove (301) matched with the sealing plate (9) is formed in the first eccentric wheel (3), and an oil cavity is formed between the sealing plate (9) and the eccentric disc (5) and between the sealing plate and the first eccentric wheel (3);

the working pipe (8) is divided into an exhaust pipe (805) and a liquid discharge pipe (806), and the number of the exhaust pipe (805) and the liquid discharge pipe (806) is the same;

six working pipes (8) are arranged, the six working pipes (8) are uniformly distributed on the fixed ring (103) in a circumference manner, and three exhaust pipes (805) and three liquid discharge pipes (806) are respectively arranged;

the oil supplementing assembly comprises an oil storage pipe (10) arranged on a liquid discharge pipe (806), an oil inlet groove (11) is formed between the oil storage pipe (10) and the liquid discharge pipe (806), a first one-way valve (111) is arranged in the oil inlet groove (11), an oil supplementing pipe (12) is communicated with the liquid discharge pipe (806), a second one-way valve (121) is arranged on the oil supplementing pipe (12), and one end, far away from the liquid discharge pipe (806), of the oil supplementing pipe (12) penetrates through a sealing plate (9) and extends into an oil cavity;

the even oily subassembly is including setting up air duct (13) in blast pipe (805) outside, air duct (13) intercommunication has connecting pipe (131), sliding connection has second piston (132) in connecting pipe (131), be provided with second elastic element (133) between the inner wall of second piston (132) and connecting pipe (131), the one end intercommunication that air duct (13) was kept away from to connecting pipe (131) has U-shaped pipe (134), seal plate (9) are all passed at the both ends of U-shaped pipe (134) and are extended to the oil pocket in, the upper and lower both sides of U-shaped pipe (134) are provided with third check valve (1341) and fourth check valve (1342) respectively.

2. The assembled crankshaft structure of a double eccentric synchronous rotating shaft according to claim 1, characterized in that the lubrication of the rolling bearing (6) is a low viscosity lubrication oil.

3. The assembled crankshaft structure of the double eccentric synchronous rotary shaft according to claim 1, wherein the eccentric holes of the two second eccentric wheels (401) are coaxial, the eccentric amounts are equal, and the directions of the two second eccentric wheels (401) are opposite.