CN209510948U - A kind of wear-resisting overload protector - Google Patents
A kind of wear-resisting overload protector Download PDFInfo
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- CN209510948U CN209510948U CN201920085741.2U CN201920085741U CN209510948U CN 209510948 U CN209510948 U CN 209510948U CN 201920085741 U CN201920085741 U CN 201920085741U CN 209510948 U CN209510948 U CN 209510948U
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- hoodle
- drive block
- wheel shell
- wear
- retaining groove
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Abstract
The utility model discloses a kind of wear-resisting overload protectors of agricultural machinery Cardan shaft; including flange yoke, wheel shell, drive block; it further include hoodle, disc spring, needle roller; the hoodle both ends are provided with vertical protrusion; there is the lattice retaining groove of quantity identical as hoodle inside the wheel shell, the protrusion of described hoodle one end is embedded in lattice retaining groove；On the left of the embeddable drive block of hoodle in notch, the protrusion front of the hoodle other end is taper, and is embedded in two spring openings of disc spring；Since lattice retaining groove two sides are hit for a long time; it is prone to wear; overload protector is caused to fail, and the whole wheel shell strength of materials that improves increases larger cost, is embedded in needle roller in lattice retaining groove side; the needle roller is located at drive block direction of rotation side; it is provided with bushing on the outside of the hoodle, is provided with washer, circlip, outside framework oil seal on the right side of drive block, the utility model runs smoothly, reliably; the threshold value accuracy that overloads is high, increases the service life of overload protector, reduces maintenance cost and time.
Description
Technical field
The utility model belongs to transmission shaft field, and in particular to a kind of wear-resisting overload guarantor of agricultural machinery Cardan shaft
Protect device.
Background technique
Currently, the Cardan shaft overload protector used in Tendency of Agricultural Machinery in China is there are commonly shearing pin type and rubs
Two kinds of structural shapes of erasing.Pin is sheared disconnected when shearing pin type overload, to protect equipment workpiece not damaged, due to by material
It is influenced in matter in uneven components, control overload error is big；It is frictionally to apply pressure by friction plate to pass on torque, works as torsion
When square is more than setting value, make to generate friction slip between active and passive side；It disengages torque and realizes protective effect, but this structure is beaten
Sliding quick abrasion, service life is short, and since transmitting moment of torsion control error is big, poor reliability.
Utility model content
For above-mentioned deficiency present in the prior art, the technical problems to be solved in the utility model is traditional overload protection
Device is big using overload error caused by shearing pin type and frictional two kinds of structural shapes, service life is short.
In order to solve the above-mentioned technical problem, the utility model adopts the following technical solution: a kind of wear-resisting overload protector, packet
Flange yoke, wheel shell, drive block are included,
Described flange yoke one end and universal joint press fitting connect, and the other end and wheel shell weld, the wheel shell and drive block left end
It connects and can be separated in overload, the drive block right end is provided with internal splined hole, and the drive block passes through internal splined hole and machine
Tool or workpiece spline axis connection and form power transmission chain, drive equipment or workpiece work；
It further include hoodle, disc spring, needle roller,
The hoodle has multiple, and the hoodle both ends are provided with vertical protrusion, have inside the wheel shell identical as hoodle
The protrusion of the lattice retaining groove of quantity, lattice retaining groove and wheel shell centerline axis parallel, described hoodle one end is embedded in lattice retaining groove；
The drive block left end is circumferentially provided with the notch of quantity identical as hoodle, and the embeddable notch of the hoodle
It is interior,
There is an accommodating hole at drive block left end center, the disc spring be arranged in wheel shell center, drive block accommodating hole in, institute
The protrusion front for stating the hoodle other end is taper, and is embedded in two spring openings of disc spring；
Since lattice retaining groove two sides are hit for a long time, it is prone to wear, overload protector is caused to fail, and entirety improves wheel shell
The strength of materials increases larger cost, is embedded in needle roller in lattice retaining groove side, the needle roller is located at drive block direction of rotation side.
Further, the hoodle, lattice retaining groove, one in breach quantity 3,4,5.
Further, in order to make hoodle, link block in overload convenient for separating with wheel shell, the lattice retaining groove in the wheel shell with
The side of hoodle contact is provided with oblique angle, and the protrusion on hoodle 2 matches with oblique angle.
Further, in order to improve reliable transmission, the flange yoke material is steel forging part.
Further, in order to increase service life, bushing is provided on the outside of the hoodle.
Further, it slips in order to prevent, step is provided on the right side of the drive block, circlip is embedded in wheel shell, circlip limitation
Washer is provided between step by drive block Slideslip to the right, and on the right side of circlip and drive block.
Further, in order to which dust-proof and antirust, the drive block right side are provided with outside framework oil seal, the outside framework oil seal passes through
Be embedded in the circlip limit of wheel shell, and smear lubricating grease in wheel shell, make to form a space being fully sealed in wheel shell, make hoodle,
Drive block is not by the erosion of extraneous sand and dust, not only dust-proof but also antirust.
Further, the outside framework oil seal material is polyurethane rubber.
Further, the needle roller material is GCr15 or 9cr18mov.
The working process of the utility model is as follows:
When universal joint drives flange yoke, wheel shell rotation, it is connect by one end with wheel shell lattice retaining groove, the other end is combined with disc spring
Power is transmitted to drive block with needle roller effect by one group of hoodle of connection, and drive block passes through internal splined hole and equipment or workpiece
Spline axis connection and form power transmission chain, drive equipment or workpiece work.When transmitting torque overload, hoodle radial force
It increases, the tension for pushing hoodle that disc spring is overcome to combine is mobile to axle center, and wherein hoodle other end is rolled along needle roller, while bullet
Another end cone face of pearl is for linear motion along disc spring combination two springs opening, and 0 torque is reached when the hoodle other end moves on to least significant end
Separation, defencive function are realized in transmitting.The hoodle of use, needle roller and its structure of disc spring structure are simple, at low cost, control overload
Error is small, using reliable.
The principles of the present invention are as follows: when agricultural machinery encounters card resistance or barrier, generation overload, if leaving transmission shaft
Continue to be driven, engine can be caused to damage, can ensure that the torque of transmitting is no more than limit value by overload protector.Pass through dish
Spring controller perturbation overload threshold value, more accurate, the abrasion between hoodle and wheel shell lattice retaining groove in order to prevent are creative embedding by needle roller
Enter, improves 14 times of service lifes, and save great amount of cost.
The beneficial effects of the utility model are:
1, it is controlled by disc spring, overload threshold value accuracy is high；
2, the needle roller for adding hard alloy increases the service life of overload protector, reduces maintenance cost and time；
3, overload protector structure is simple, runs smoothly, reliably；
4, antirust, dust-proof effect are significant.
Detailed description of the invention
Fig. 1 is wear-resisting overload protector side half sectional view described in the utility model；
Fig. 2 is wear-resisting overload protector described in the utility model along A-A Section View.
In figure: 1 flange yoke, 2 hoodles, 3 bushings, 4 washers, 5 circlips, 6 baffles, 7 outside framework oil seals, 8 drive blocks, 9 disc springs,
10 fixed pins, 11 needle rollers, 12 wheel shells.
Specific embodiment
The particular content of the utility model is described in detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, a kind of wear-resisting overload protector, including flange yoke 1, wheel shell 12, drive block 8,
Described 1 one end of flange yoke and universal joint press fitting connect, and the other end and wheel shell 12 weld, the wheel shell 12 and drive block
8 left ends connect and can separate in overload, and 8 right end of drive block is provided with internal splined hole, and the drive block 8 passes through interior flower
The spline axis connection of keyhole and equipment or workpiece and form power transmission chain, drive equipment or workpiece work；
It further include hoodle 2, disc spring 9, needle roller 11,
As shown in Fig. 2, the hoodle 2 has multiple, 2 both ends of hoodle are provided with vertical protrusion, in the wheel shell 12
There are the lattice retaining groove of quantity identical as hoodle 2, lattice retaining groove and 12 centerline axis parallel of wheel shell in portion, and the protrusion of described 2 one end of hoodle is embedding
Accord with regular rules retaining groove；
8 left end of drive block is circumferentially provided with the notch of quantity identical as hoodle 2, and the hoodle 2 is embeddable scarce
In mouthful,
There is accommodating hole at the 8 left end center of drive block, and the accommodating hole at 12 center of wheel shell, drive block 8 is arranged in the disc spring 9
Interior, the protrusion front of 2 other end of hoodle is taper, and is embedded in two spring openings of disc spring 9；
Since lattice retaining groove two sides are hit for a long time, it is prone to wear, overload protector is caused to fail, and entirety improves wheel shell
12 strengths of materials increase larger cost, are embedded in needle roller 11 in lattice retaining groove side, the needle roller 11 is located at 8 direction of rotation one of drive block
Side.
In practical applications, the hoodle 2, lattice retaining groove, one, preferably 4 in breach quantity 3,4,5.
In practical applications, the side that the lattice retaining groove in the wheel shell 12 is contacted with hoodle 2 is provided with oblique angle, on hoodle 2
Protrusion match with oblique angle.
In practical applications, 1 material of flange yoke is steel forging part.
In practical applications, bushing 3 is provided on the outside of the hoodle 2.
In practical applications, step is provided on the right side of the drive block 8, circlip 5 is embedded in wheel shell 12, and the limitation of circlip 5 passes through
The Slideslip to the right of drive block 8, and washer 4 is provided between 8 right side step of circlip 5 and drive block.
In practical applications, outside framework oil seal 7 is provided on the right side of the drive block 8, the outside framework oil seal 7 passes through insertion wheel shell
12 circlip 5 limits, and lubricating grease is smeared in wheel shell 12, makes to form a space being fully sealed in wheel shell 12, make hoodle 2,
Drive block 8 is not by the erosion of extraneous sand and dust, not only dust-proof but also antirust.
In practical applications, 7 material of outside framework oil seal is polyurethane rubber.
In practical applications, 11 material of needle roller is GCr15 or 9cr18mov or other materials containing Mn.
The working process of the utility model is as follows:
When universal joint drives flange yoke 1, wheel shell 12 to rotate, it is connect by one end with 12 lattice retaining groove of wheel shell, the other end and dish
One group of hoodle 2 of the combination connection of spring 9 and the effect of needle roller 11 power is transmitted to drive block 8, drive block 8 by internal splined hole with
Equipment or workpiece spline axis connection and form power transmission chain, drive equipment or workpiece work.When transmitting torque is super
When load, 2 radial force of hoodle is increased, and the tension for pushing hoodle 2 to overcome disc spring 9 combined is mobile to axle center, wherein 2 other end of hoodle
It is rolled along needle roller 11, while another end cone face of hoodle 2 is for linear motion along the combination two springs opening of disc spring 9, when 2 other end of hoodle
Reach the transmitting of 0 torque when moving on to least significant end, that is, realizes separation, defencive function.9 knot of hoodle 2, needle roller 11 and disc spring of use
Its structure of structure is simple, at low cost, and control overload error is small, using reliable.
The principles of the present invention are as follows: when agricultural machinery encounters card resistance or barrier, generation overload, if leaving transmission shaft
Continue to be driven, engine can be caused to damage, can ensure that the torque of transmitting is no more than limit value by overload protector.Pass through dish
9 controller perturbation of spring overload threshold value, more accurate, the abrasion between 12 lattice retaining groove of hoodle 2 and wheel shell in order to prevent, creativeness will
Needle roller 11 is embedded in, and improves 14 times of service lifes, and save great amount of cost.
In conclusion the utility model runs smoothly, reliably, overload threshold value accuracy is high, increases the longevity of overload protector
Life reduces maintenance cost and time.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that above embodiment is only to illustrate the technical ideas and features of the present invention, its object is to allow be familiar with this
The personage of technology can understand the content of the utility model and be implemented, and the protection model of the utility model can not be limited with this
It encloses, all equivalent change or modifications according to made by the spirit of the present invention essence should all cover the protection model in the utility model
In enclosing.
Claims (9)
1. a kind of wear-resisting overload protector, including flange yoke (1), wheel shell (12), drive block (8),
Described flange yoke (1) one end and universal joint press fitting connect, and the other end and wheel shell (12) are welded, the wheel shell (12) and transmission
Block (8) left end connects and can separate in overload, and drive block (8) right end is provided with internal splined hole, and the drive block (8) is logical
It crosses the spline axis connection of internal splined hole and equipment or workpiece and forms power transmission chain, drive equipment or workpiece work
Make；
It is characterized by also including hoodle (2), disc spring (9), needle roller (11),
The hoodle (2) has multiple, and hoodle (2) both ends are provided with vertical protrusion, has inside the wheel shell (12) and bullet
The protrusion of the lattice retaining groove of the identical quantity of pearl (2), lattice retaining groove and wheel shell (12) centerline axis parallel, described hoodle (2) one end is embedded in
Lattice retaining groove；
Drive block (8) left end is circumferentially provided with the notch of quantity identical as hoodle (2), and the hoodle (2) is embeddable
In notch,
There is accommodating hole at drive block (8) the left end center, and the disc spring (9) is arranged at wheel shell (12) center, the appearance of drive block (8)
It sets in hole, the protrusion front of hoodle (2) other end is taper, and is embedded in the two spring openings of disc spring (9)；
Needle roller (11) are embedded in outside lattice retaining groove side, the needle roller (11) is located at drive block (8) direction of rotation side.
2. a kind of wear-resisting overload protector according to claim 1, it is characterised in that: the hoodle (2), lacks lattice retaining groove
Mouth quantity is one in 3,4,5.
3. a kind of wear-resisting overload protector according to claim 2, it is characterised in that: the lattice retaining groove in the wheel shell (12)
The side contacted with hoodle (2) is provided with oblique angle, and the protrusion on hoodle (2) matches with oblique angle.
4. a kind of wear-resisting overload protector according to claim 3, it is characterised in that: flange yoke (1) material is steel
Matter forging part.
5. a kind of wear-resisting overload protector according to claim 3, it is characterised in that: be provided on the outside of the hoodle (2)
Bushing (3).
6. a kind of wear-resisting overload protector according to claim 5, it is characterised in that: setting on the right side of the drive block (8)
There is step, circlip (5) is embedded in wheel shell (12), and circlip (5) limitation passes through drive block (8) Slideslip, and circlip (5) and transmission to the right
Washer (4) are provided between step on the right side of block (8).
7. -6 any a kind of wear-resisting overload protector according to claim 1, it is characterised in that: the drive block (8) is right
Side is provided with outside framework oil seal (7), and the outside framework oil seal (7) is limited by the circlip (5) of insertion wheel shell (12), and in wheel shell (12)
Lubricating grease is smeared, makes to form a space being fully sealed in wheel shell (12), makes hoodle (2), drive block (8) not by extraneous sand and dust
Erosion, not only dust-proof but also antirust.
8. a kind of wear-resisting overload protector according to claim 7, it is characterised in that: outside framework oil seal (7) material is
Polyurethane rubber.
9. a kind of wear-resisting overload protector according to claim 8, it is characterised in that: needle roller (11) material is
GCr15 or 9cr18mov.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920085741.2U CN209510948U (en) | 2019-01-18 | 2019-01-18 | A kind of wear-resisting overload protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920085741.2U CN209510948U (en) | 2019-01-18 | 2019-01-18 | A kind of wear-resisting overload protector |
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| Publication Number | Publication Date |
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| CN209510948U true CN209510948U (en) | 2019-10-18 |
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ID=68201333
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920085741.2U Active CN209510948U (en) | 2019-01-18 | 2019-01-18 | A kind of wear-resisting overload protector |
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| Country | Link |
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| CN (1) | CN209510948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555793A (en) * | 2019-01-18 | 2019-04-02 | 盐城市威氏机械有限公司 | A kind of wear-resisting overload protector |
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2019
- 2019-01-18 CN CN201920085741.2U patent/CN209510948U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109555793A (en) * | 2019-01-18 | 2019-04-02 | 盐城市威氏机械有限公司 | A kind of wear-resisting overload protector |
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