CN211288671U

CN211288671U - Automobile engine crankshaft damping belt pulley

Info

Publication number: CN211288671U
Application number: CN201922044163.0U
Authority: CN
Inventors: 叶胜楠
Original assignee: Zhengyang Precision Industry Machinery Co ltd
Current assignee: Zhengyang Precision Industry Machinery Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-08-18
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses an automobile engine bent axle shock attenuation belt pulley relates to belt pulley technical field, including the bent axle, the one end fixedly connected with integral key shaft of bent axle, wheel hub has been cup jointed to the outside of integral key shaft, wheel hub's outside fixed connection has the web, a side fixedly connected with closure plate of web. The utility model discloses a set up the integral key shaft, can be convenient for power transmission between wheel hub and the bent axle, and the cooperation between integral key shaft and the splined hole can be convenient for wheel hub's installation, utilize two nuts can guarantee that wheel hub can not drop from the integral key shaft, it is convenient to make wheel hub dismantle again, the purpose of making things convenient for belt pulley to dismantle and change has been reached, through setting up the closing plate, the damping spring who makes the shock attenuation inslot portion has a good operational environment, and fixed connection's jack catch and locating piece can enough firmly fix the closing plate on the web on the closing plate, can make the closing plate dismantle conveniently again, the purpose of conveniently changing the shock attenuation part has been reached.

Description

Automobile engine crankshaft damping belt pulley

Technical Field

The utility model relates to a belt pulley technical field specifically is an automobile engine bent axle shock attenuation belt pulley.

Background

The automobile engine is a device for providing power for an automobile, is the heart of the automobile and determines the dynamic property, the economical efficiency, the stability and the environmental protection property of the automobile. According to different power sources, an automobile engine can be divided into a diesel engine, a gasoline engine, an electric automobile motor, hybrid power and the like, common gasoline engines and diesel engines belong to reciprocating piston type internal combustion engines, chemical energy of fuel is converted into mechanical energy of piston motion and power is output outwards, a crankshaft is the most important part in the engine, and the crankshaft bears force transmitted by a connecting rod and converts the force into torque which is output through the crankshaft and drives other accessories on the engine to work. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load. Therefore, the crankshaft is required to have enough strength and rigidity, the surface of the journal needs to be wear-resistant, work is uniform, balance is good, and the journal of the crankshaft is usually hollow in order to reduce the mass of the crankshaft and the centrifugal force generated during movement. Oil holes are opened on each journal surface to introduce or withdraw oil for lubricating the journal surface. In order to reduce stress concentration, the joints of the main journal, the crank pin and the crank arm are connected by transition arcs. The belt pulley belongs to a hub part, generally the relative size is bigger, generally the casting and forging are taken as the main points in the manufacturing process, the belt pulley is mainly used for the occasion of long-distance power transmission, it is worth noting that gasoline must be used for the last cleaning before the belt pulley is assembled, so as to ensure that all parts are clean and dry, so as to ensure that the matching surface is tightly matched without oil stain and enough friction force, in addition, the belt pulley can generate vibration when rotating at high speed, the vibration has great influence on the rotation of the belt pulley, the belt pulley which works in a vibration-big environment for a long time is easy to be damaged, and the service life of the belt pulley is far shorter than that of the belt pulley with shock absorption.

The utility model discloses a belt pulley bumper shock absorber disclosed in chinese utility model patent application laid-open specification CN208686919U, including wheel hub, the belt pulley, the torsional spring flange, the torsional spring housing, rubber ring and the outer iron of TVD, though this utility model can reach and carry out the shock attenuation to the belt pulley, can avoid the belt pulley because long-time vibration is impaired, but damping spring can take place the distortion phenomenon after long-time the use, this utility model discloses a damper is all very inconvenient in installation and dismantlement, be unfavorable for maintaining and renewal part damper, and adopt the key-type connection between belt pulley wheel hub among the prior art and the pivot, need use lubricating oil to install the axle lubrication when the installation, need pull out the trochanter again and assist and pull out the wheel when dismantling, make the process of changing the band pulley very hard.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an automobile engine bent axle shock attenuation belt pulley has solved the problem that proposes in the above-mentioned background art.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the shock absorber comprises a crankshaft, wherein one end of the crankshaft is fixedly connected with a spline shaft, a hub is sleeved outside the spline shaft, a web plate is fixedly connected outside the hub, one side surface of the web plate is fixedly connected with a sealing plate, a shock absorption groove is formed in the web plate, a clamping groove is formed in the inner wall of one side surface of the shock absorption groove, a positioning groove is formed in the inner wall of the other side surface of the shock absorption groove, one end of the sealing plate is fixedly connected with a clamping jaw, a dismounting hole is formed between the clamping jaw and the shock absorption groove, the other end of the sealing plate is fixedly connected with a positioning block, the positioning block is matched with the positioning groove, the clamping groove is matched with the clamping jaw, a spring fixing column is fixedly connected inside the shock absorption groove, one side surface of the sealing plate is fixedly connected with a connecting cylinder, the connecting cylinder is sleeved, the one end fixedly connected with threaded shaft of integral key shaft, the diameter of threaded shaft is less than the diameter of integral key shaft, the outside threaded connection of threaded shaft has two nuts, the outer wall diameter of two nuts is greater than the diameter of integral key shaft.

Optionally, a spline hole is formed in the hub, an internal spline is formed in the spline hole, an external spline is formed outside the spline shaft, the spline shaft is matched with the spline hole,

optionally, the damping grooves are distributed in an annular array on the web.

Optionally, the two ends of the damping spring are fixedly connected with spring rings, the damping groove is fixedly connected with two spring fixing columns, the two spring fixing columns are matched with the two spring rings, and the number of the spring fixing columns is equal to that of the connecting cylinders.

Optionally, the outer portion of the web is fixedly connected with a rim, a groove is formed in the outer portion of the rim, the thickness of the rim is larger than that of the hub, and the thickness of the hub is larger than that of the web.

Optionally, the bearings are sleeved outside the two ends of the crankshaft, the outer ring of each bearing is fixedly connected with an engine shell, and the two ends of the crankshaft penetrate through the engine shells.

Three beneficial effects

The utility model provides an automobile engine bent axle shock attenuation belt pulley possesses following beneficial effect:

1. this automobile engine bent axle shock attenuation belt pulley through setting up the integral key shaft, can be convenient for the power transmission between wheel hub and the bent axle to the cooperation between integral key shaft and the splined hole can be convenient for wheel hub's installation, utilizes the cooperation of two nuts and screw shaft, can guarantee that wheel hub can not drop from the integral key shaft, can make wheel hub dismantle the convenience from the integral key shaft again, has reached the purpose that makes things convenient for the belt pulley to dismantle and change.

2. This automobile engine crankshaft shock attenuation belt pulley through setting up the closing plate, can seal the shock attenuation groove, makes the damping spring of shock attenuation inslot portion have a good operational environment to fixed connection's jack catch and locating piece can enough firmly fix the closing plate on the web on the closing plate, can make the closing plate dismantle the convenience again, have reached the purpose of conveniently changing the shock attenuation part.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;

FIG. 3 is a schematic diagram of a side view structure of the web of the present invention;

FIG. 4 is a schematic perspective view of the closure plate of the present invention;

fig. 5 is a schematic view of the three-dimensional structure of the damping spring of the present invention.

In the figure: 1. a bearing; 2. an engine housing; 3. a crankshaft; 4. a rim; 5. a belt groove is formed; 6. a web; 7. a spline shaft; 8. a threaded shaft; 9. double nuts; 10. a hub; 11. a card slot; 12. a claw; 13. Disassembling the hole; 14. a closing plate; 15. a damping spring; 16. a connecting cylinder; 17. a spring ring; 18. positioning blocks; 19. positioning a groove; 20. a spring fixing column; 21. a damping groove; 22. a splined bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: a shock-absorbing belt pulley for a crankshaft of an automobile engine comprises a crankshaft 3, bearings 1 are sleeved outside two ends of the crankshaft 3, an outer ring of each bearing 1 is fixedly connected with an engine shell 2, two ends of the crankshaft 3 penetrate through the engine shell 2, one end of the crankshaft 3 is fixedly connected with a spline shaft 7, a hub 10 is sleeved outside the spline shaft 7, a spline hole 22 is formed inside the hub 10, an internal spline is arranged inside the spline hole 22, an external spline is arranged outside the spline shaft 7, the spline shaft 7 is matched with the spline hole 22, a web 6 is fixedly connected outside the hub 10, a rim 4 is fixedly connected outside the web 6, a belt groove 5 is formed outside the rim 4, the thickness of the rim 4 is larger than that of the hub 10, the thickness of the hub 10 is larger than that of the web 6, a sealing plate 14 is fixedly connected to one side surface of the web 6, and a shock-, the damping grooves 21 are distributed on the web 6 in an annular array, a clamping groove 11 is formed in the inner wall of one side face of each damping groove 21, a positioning groove 19 is formed in the inner wall of the other side face of each damping groove 21, a clamping jaw 12 is fixedly connected to one end of a sealing plate 14, a dismounting hole 13 is formed between the clamping jaw 12 and the damping groove 21, a positioning block 18 is fixedly connected to the other end of the sealing plate 14, the positioning block 18 is matched with the positioning groove 19, the clamping groove 11 is matched with the clamping jaw 12, a spring fixing column 20 is fixedly connected to the inside of each damping groove 21, a connecting cylinder 16 is fixedly connected to one side face of the sealing plate 14, the connecting cylinder 16 is sleeved outside one end of the spring fixing column 20, a damping spring 15 is sleeved in the middle of the spring fixing column 20 through a spring ring 17, spring rings 17 are fixedly connected to both ends of the damping spring, the two spring fixing columns 20 are matched with the two spring rings 17, the number of the spring fixing columns 20 is equal to that of the connecting cylinders 16, the spring fixing columns 20 are matched with the connecting cylinders 16, the sealing plate 14 is arranged, the damping groove 21 can be sealed, the damping spring 15 in the damping groove 21 has a good working environment, the clamping jaws 12 and the positioning blocks 18 which are fixedly connected to the sealing plate 14 can firmly fix the sealing plate 14 on the web plate 6, the sealing plate 14 can be conveniently detached, and the aim of conveniently replacing damping parts is achieved, one end of the spline shaft 7 is fixedly connected with the threaded shaft 8, the diameter of the threaded shaft 8 is smaller than that of the spline shaft 7, the outer thread of the threaded shaft 8 is connected with the double nuts 9, the diameter of the outer wall of the double nuts 9 is larger than that of the spline shaft 7, power transmission between the hub 10 and the crankshaft 3 can be facilitated by arranging the spline shaft 7, and the spline shaft 7 is matched with the, by utilizing the matching of the double nuts 9 and the threaded shaft 8, the hub 10 can not fall off from the spline shaft 7, and the hub 10 can be conveniently detached from the spline shaft 7, so that the aim of conveniently detaching and replacing the belt pulley is fulfilled.

When the shock absorption type hub is used, firstly, the spring rings 17 at two ends of the shock absorption spring 15 are sleeved outside the spring fixing column 20, then the positioning block 18 on the closing plate 14 is inserted into the positioning groove 19, then the connecting cylinder 16 is sleeved outside one end of the spring fixing column 20, then the clamping jaw 12 is pressed into the shock absorption groove 21, the clamping groove 11 is matched with the clamping jaw 12 to fix the closing plate 14 firmly, then the spline hole 22 in the hub 10 is sleeved on the threaded shaft 8, then the spline in the spline hole 22 is aligned with the spline outside the spline shaft 7, so that the hub 10 can be smoothly sleeved outside the spline shaft 7, then the double nuts 9 are screwed outside the threaded shaft 8, and the hub 10 cannot fall off from the spline shaft 7.

In conclusion, this device is through setting up integral key shaft 7, can be convenient for the power transmission between wheel hub 10 and bent axle 3, and the cooperation between integral key shaft 7 and the splined hole 22 can be convenient for wheel hub 10's installation, utilize the cooperation of two nuts 9 and threaded shaft 8, can guarantee that wheel hub 10 can not drop from integral key shaft 7, can make wheel hub 10 dismantle conveniently from integral key shaft 7 again, the purpose that makes things convenient for belt pulley dismantlement and change has been reached, through setting up closing plate 14, can seal damping groove 21, make damping spring 15 inside damping groove 21 have a good operational environment, and claw 12 and the locating piece 18 of fixed connection on closing plate 14 can enough firmly fix closing plate 14 on web 6, can make closing plate 14 dismantle conveniently again, reached the purpose of conveniently changing the shock attenuation part.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an automobile engine bent axle shock attenuation belt pulley, includes bent axle (3), its characterized in that: the one end fixedly connected with integral key shaft (7) of bent axle (3), wheel hub (10) has been cup jointed to the outside of integral key shaft (7), the outside fixed connection of wheel hub (10) has web (6), a side fixedly connected with closing plate (14) of web (6), damping groove (21) have been seted up to the inside of web (6), draw-in groove (11) have been seted up to a damping groove (21) side inner wall, constant head tank (19) have been seted up to the another side inner wall of damping groove (21), the one end fixedly connected with jack catch (12) of closing plate (14), be equipped with between jack catch (12) and damping groove (21) and dismantle hole (13), the other end fixedly connected with locating piece (18) of closing plate (14), locating piece (18) and constant head tank (19) looks adaptation, draw-in groove (11) and jack catch (12) looks adaptation, the inside fixedly connected with spring fixed column (20) of shock attenuation groove (21), a side fixedly connected with connecting cylinder (16) of closing plate (14), connecting cylinder (16) cup joint the one end outside at spring fixed column (20), damping spring (15) have been cup jointed through spring ring (17) in the middle part of spring fixed column (20), the one end fixedly connected with screw shaft (8) of integral key shaft (7), the diameter of screw shaft (8) is less than the diameter of integral key shaft (7), the outside threaded connection of screw shaft (8) has two nuts (9), the outer wall diameter of two nuts (9) is greater than the diameter of integral key shaft (7).

2. The automotive engine crankshaft damping pulley according to claim 1, characterized in that: the inside of wheel hub (10) is equipped with splined hole (22), the inside of splined hole (22) is equipped with internal spline, the outside of integral key shaft (7) is equipped with external spline, integral key shaft (7) and splined hole (22) looks adaptation.

3. The automotive engine crankshaft damping pulley according to claim 1, characterized in that: the damping grooves (21) are distributed in an annular array mode on the web plate (6).

4. The automotive engine crankshaft damping pulley according to claim 1, characterized in that: the damping device is characterized in that spring rings (17) are fixedly connected to two ends of the damping spring (15), two spring fixing columns (20) are fixedly connected to the inner portion of the damping groove (21), the two spring fixing columns (20) are matched with the two spring rings (17), and the number of the spring fixing columns (20) is equal to that of the connecting cylinders (16) and is matched with the connecting cylinders.

5. The automotive engine crankshaft damping pulley according to claim 1, characterized in that: the outside fixedly connected with rim (4) of web (6), trough of belt (5) have been seted up to the outside of rim (4), the thickness of rim (4) is greater than the thickness of wheel hub (10), the thickness of wheel hub (10) is greater than the thickness of web (6).

6. The automotive engine crankshaft damping pulley according to claim 1, characterized in that: the outer portion of the two ends of the crankshaft (3) is sleeved with the bearings (1), the outer ring of each bearing (1) is fixedly connected with the engine shell (2), and the two ends of the crankshaft (3) penetrate through the engine shells (2).