CN210178434U - Hydraulic direct-driven auxiliary brake rocker arm structure - Google Patents
Hydraulic direct-driven auxiliary brake rocker arm structure Download PDFInfo
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- CN210178434U CN210178434U CN201921147050.7U CN201921147050U CN210178434U CN 210178434 U CN210178434 U CN 210178434U CN 201921147050 U CN201921147050 U CN 201921147050U CN 210178434 U CN210178434 U CN 210178434U
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Abstract
The utility model belongs to the technical field of the engine, refer in particular to a hydraulic pressure direct drive's supplementary braking rocker arm structure, including rocking arm, rocking arm axle, drive mechanism, exhaust cam, arrestment mechanism's below is provided with air discharge door bridge or valve, is provided with the accuse fuel valve on the rocking arm between rocking arm axle and arrestment mechanism, be provided with the braking oil duct at intercommunication rocking arm axle and valve pocket top, intercommunication rocking arm axle, accuse fuel valve rod and arrestment mechanism's lubricating-oil duct and the lubricating-oil duct of intercommunication rocking arm axle and drive mechanism on the rocking arm, by the break-make between accuse fuel valve control first lubricating-oil duct and the arrestment mechanism. The utility model discloses simple structure reforms transform with low costsly, simple to operate can make the rocking arm increase auxiliary brake function, improves whole car arrestment mechanism's life-span, increases the fail safe nature of whole car at the downhill path in-process.
Description
The technical field is as follows:
the utility model belongs to the technical field of the engine, refer in particular to a hydraulic pressure direct drive's supplementary braking rocker arm structure.
Background art:
in the prior art, engine braking techniques are well known. One prior example of an engine braking device is the hydraulic engine brake disclosed by Cummins (Cummins) in 1965 in U.S. patent No. 3220392. The engine brake in this technology transmits a mechanical input to the exhaust valve to be opened via a hydraulic circuit. The engine braking process is realized by temporarily converting the engine into the compressor. Fuel is cut off during the transition and the exhaust valve is opened near the end of the compression stroke of the engine piston to allow the release of compressed gas (air during braking), the energy absorbed by the compressed gas during the compression stroke of the engine not being returned to the engine piston during the subsequent expansion stroke but being dissipated through the exhaust and heat dissipation system of the engine. And finally, effective engine braking is realized, and the speed of the vehicle is reduced.
The Chinese utility model patent application (application publication No. CN 105003314A) discloses a rocker arm integrated with engine brake, the rocker arm is arranged on a rocker shaft, one end of the rocker arm is provided with a driving mechanism for driving the rocker arm to swing around the rocker shaft, the other end of the rocker arm is provided with a brake mechanism, an exhaust valve bridge or a single exhaust valve is arranged below the brake mechanism, a control mechanism is arranged on the rocker arm between the brake mechanism and the rocker shaft, the swing of the rocker arm driven by the driving mechanism is matched with a hydraulic mechanism controlled by an electromagnetic valve to control the exhaust valve bridge or the single exhaust valve through the control mechanism and the brake mechanism to realize exhaust, the control mechanism comprises three interconnected and communicated stepped chambers arranged on the rocker arm, an end cap is arranged at the end part of the first chamber, a one-way valve is arranged in the first chamber, and the first chamber is communicated with the brake mechanism through a first oil duct, and an oil control valve plunger mechanism is arranged in the third chamber, the oil control valve plunger mechanism is in contact connection with the one-way valve to control the on-off of the one-way valve, and the on-off of the chamber in which the one-way valve is arranged is controlled by the on-off of the one-way valve, so that a brake oil chamber formed by the chamber, the brake mechanism and a first oil duct connected between the chamber and the brake mechanism is formed or eliminated. The control mechanism with the structure has the defects of complex structure, inconvenient disassembly and assembly and the like.
The invention content is as follows:
the utility model aims at providing a accuse fuel tap compact structure, the hydraulic pressure direct drive's of being convenient for dismouting auxiliary brake rocking arm structure.
The utility model discloses a realize like this:
an auxiliary braking rocker arm structure directly driven by hydraulic pressure is provided, a rocker arm is arranged on a rocker arm shaft, one end of the rocker arm is in contact connection with an exhaust cam through a transmission mechanism, a braking mechanism is arranged at the other end of the rocker arm, an exhaust valve bridge or an air valve is arranged below the braking mechanism, the braking mechanism controls the action of the exhaust valve bridge or the air valve, a first braking oil duct and a first lubricating oil duct are arranged on the rocker arm shaft, an oil control valve is arranged on the rocker arm between the rocker arm shaft and the braking mechanism and comprises an oil control valve rod and a valve cavity with an opening at the lower end, the oil control valve rod is arranged in the valve cavity, a gasket is arranged at the lower part of the valve cavity, the lower end of the oil control valve rod penetrates through the gasket and extends out of the valve cavity, the lower part of the oil control valve rod is a necking part, a step surface is formed at the upper part and the lower part of the oil control valve rod, The other end of the oil control valve rod is tightly propped against the gasket, the top of the oil control valve rod is propped against the top surface of the valve cavity, and the upper part of the oil control valve rod is provided with an annular groove; the rocker arm is provided with a first brake oil duct communicated with the rocker arm shaft and a second brake oil duct at the top of the valve cavity, a first lubricating oil duct communicated with the rocker arm shaft, a second lubricating oil duct communicated with an annular groove on the oil control valve rod, a third lubricating oil duct communicated with the annular groove on the oil control valve rod and the brake mechanism, and a fourth lubricating oil duct communicated with the first lubricating oil duct on the rocker arm shaft and the transmission mechanism, wherein the oil control valve controls the connection and disconnection between the first lubricating oil duct and the brake mechanism.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, the transmission mechanism includes a roller connected with one end of the rocker arm through a connecting pin or a push rod arranged at one end of the rocker arm.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, a reset pin is provided at the lower end of the oil control valve rod.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, a socket is provided at the lower end of the oil control valve rod.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, the braking mechanism includes a braking chamber with an opening at the lower end, a braking piston is arranged at the lower end of the braking chamber, the lower end of the braking piston extends out of the braking chamber, an adjusting bolt is screwed on the rocker arm, the lower end of the adjusting bolt extends into the braking chamber, the adjusting bolt is positioned on the rocker arm through a nut, a pre-tightening spring is sleeved on the braking bolt in the valve chamber, the upper end of the pre-tightening spring is pressed against the top surface of the braking chamber, and the lower end of the pre-tightening spring is pressed against the braking piston.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, the braking piston is provided with a blind hole from the upper plane downwards along the axial direction, and the lower end of the pre-tightening spring is pressed against the inner bottom surface of the blind hole.
In the above-mentioned structure of the hydraulic directly driven auxiliary brake rocker arm, the lower end of the brake piston is provided with a socket.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, the gasket is limited by a snap spring clamped at the lower end of the valve cavity.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, the bottom plane of the lower end of the oil control valve rod is an arc surface.
In the above-mentioned auxiliary braking rocker arm structure directly driven by hydraulic pressure, the upper end of the oil control valve rod is provided with a chamfer which is beneficial to brake oil entering and acting.
Compared with the prior art, the utility model outstanding advantage is:
1. the utility model does not need to additionally arrange a complex mechanical hydraulic structure, thereby realizing the integrated modularization, simplification and low cost of the engine brake mechanism;
2. the utility model has convenient installation and adjustment, wide applicability, and can meet the common valve arrangement modes of two-in-one row, two-in-two rows and the like;
3. the utility model discloses shorten the oil circuit stroke simultaneously and cut down the execute component, improved the sensitivity and the reliability of engine braking.
4. The utility model discloses simple structure reforms transform with low costsly, simple to operate can make the rocking arm increase auxiliary brake function, improves whole car arrestment mechanism's life-span, increases the fail safe nature of whole car at the downhill path in-process.
Description of the drawings:
fig. 1 is a schematic diagram of the present invention.
In the figure: 1. a rocker arm; 2. a rocker shaft; 3. an exhaust cam; 4. an exhaust valve bridge; 5. a first brake oil gallery; 6. a first lubricating oil passage; 7. an oil control valve stem; 8. a valve cavity; 9. a gasket; 10. a step surface; 11. a return spring; 12. an annular groove; 13. a second brake oil gallery; 14. a second lubricating oil passage; 15. a fourth lubricating oil passage; 16. a third lubricating oil passage; 17. a connecting pin; 18. a roller; 19. a reset pin; 20. a normal exhaust bulge; 21. a compression-release braking projection; 22. a socket seat; 23. a brake chamber; 24. a brake piston; 25. adjusting the bolt; 26. a nut; 27. pre-tightening the spring; 28. blind holes; 29. and a clamp spring.
The specific implementation mode is as follows:
the invention will now be further described with reference to specific embodiments, with reference to fig. 1:
a rocker arm 1 is arranged on a rocker arm shaft 2, one end of the rocker arm 1 is in contact connection with an exhaust cam 3 through a transmission mechanism, a brake mechanism is arranged at the other end of the rocker arm 1, an exhaust valve bridge 4 or an air valve is arranged below the brake mechanism, the brake mechanism controls the action of the exhaust valve bridge 4 or the air valve, a first brake oil duct 5 and a first lubricating oil duct 6 are arranged on the rocker arm shaft 2, and the first brake oil duct 5 and the first lubricating oil duct 6 respectively comprise an oil duct arranged along the axial direction of the rocker arm shaft 2 and an oil duct arranged along the radial direction of the rocker arm shaft 2. An oil control valve is arranged on the rocker arm 1 between the rocker arm shaft 2 and the brake mechanism, the oil control valve comprises an oil control valve rod 7 and a valve cavity 8 with an opening at the lower end, the oil control valve rod 7 is arranged in the valve cavity 8, a gasket 9 is arranged at the lower part of the valve cavity 8, the lower end of the oil control valve rod 7 penetrates through the gasket 9 and extends out of the valve cavity 8, the lower part of the oil control valve rod 7 is a necking part, step surfaces 10 are formed at the upper part and the lower part of the oil control valve rod 7, a return spring 11 is sleeved outside the lower part of the oil control valve rod 7, one end of the return spring 11 is tightly propped against the step surfaces 10, the other end of the return spring 11 is tightly propped against the gasket 9, the top of the oil control valve rod 7 is propped against the top surface of the valve cavity 8, the gasket 9. An annular groove 12 is arranged at the upper part of the oil control valve rod 7; the rocker arm 1 is provided with a first brake oil duct 5 communicated with the rocker arm shaft 2 and a second brake oil duct 13 at the top of the valve cavity 8, a first lubricating oil duct 6 communicated with the rocker arm shaft 2, a second lubricating oil duct 14 communicated with an annular groove 12 on the oil control valve rod 7, a third lubricating oil duct 16 communicated with the annular groove 12 on the oil control valve rod 7 and the brake mechanism, and a fourth lubricating oil duct 15 communicated with the first lubricating oil duct 6 on the rocker arm shaft 2 and the transmission mechanism, wherein the oil control valve controls the connection and disconnection between the first lubricating oil duct 6 and the brake mechanism. In the brake opening state, the hydraulic oil directly pushes the oil control valve rod 7 to push downwards, so that a closed cavity is formed in the brake mechanism.
The first lubricating oil channel 6 and the second lubricating oil channel 14 are communicated in a state that the functions are not opened, the exhaust cam 3 rotates to drive the rocker arm 1 to swing around the rocker arm shaft 2, and the actions of the oil control valve and the brake mechanism are driven by matching with signals of the electromagnetic valve so as to control the action of the exhaust valve bridge 4. The electromagnetic valve is arranged on the rocker shaft 2, the rocker shaft 2 is fixed on the cylinder body, and the electromagnetic valve controls the opening and closing of the first brake oil duct 5 entering the rocker shaft 2. The exhaust cam 3 is provided with a normal exhaust boss 21 and a compression release type brake boss 22. The exhaust cam 3 is formed by adding a CR (Compression-Release) Compression-Release type brake bulge 20 on the basis of an original normal exhaust bulge 21 of a conventional cam; the compression-release brake lobe 20 acts before the compression stroke ends and after the power stroke begins.
The utility model discloses a working principle of accuse fuel tap is:
under the normal state, the oil control valve rod 7 is positioned at the upper non-operation position under the action of the force of the return spring 11, and at the moment, the annular groove 12 on the connecting oil control valve is communicated with the second lubricating oil channel 14 and the third lubricating oil channel 16; after receiving the electromagnetic valve braking signal, the oil pressure in the first brake oil duct 5 and the second brake oil duct 13 acts on the oil control valve rod 7, the oil control valve rod 7 moves downwards, the return spring 11 is compressed to be in the lower operation position, and meanwhile the second lubricating oil duct 14 and the third lubricating oil duct 16 are closed and blocked.
The utility model discloses a lower extreme of accuse oil valve rod 7 is provided with reset round pin 19. The reset pin 19 is located on the cylinder. The lower end of the oil control valve rod 7 is provided with a socket 22.
In order to avoid stress concentration during contact and clamping stagnation during movement of the oil control valve rod 7, the bottom plane of the lower end of the oil control valve rod 7 is an arc surface.
Further, in order to facilitate the brake oil to enter and act, the upper end of the oil control valve rod 7 is provided with a chamfer.
Further, the transmission mechanism includes a roller 18 connected to one end of the swing arm 1 through a connecting pin 17 or a push rod provided at one end of the swing arm 1.
Further, the brake mechanism comprises a brake cavity 23 with an opening at the lower end, a brake piston 24 is arranged at the lower end of the brake cavity 23, the lower end of the brake piston 24 extends out of the brake cavity 23, an adjusting bolt 25 is screwed on the rocker arm 1, the lower end of the adjusting bolt 25 extends into the brake cavity 23, and the adjusting bolt 25 is positioned on the rocker arm 1 through a nut 26. The adjusting bolt 25 in the brake cavity 23 is sleeved with a pre-tightening spring 27, the upper end of the pre-tightening spring 27 is tightly pressed against the top surface of the brake cavity 23, and the lower end of the pre-tightening spring 27 is tightly pressed against the brake piston 24.
In order to position the pretension spring 27, the brake piston 24 is provided with a blind hole 28 from the upper plane in the axial direction downward, and the lower end of the pretension spring 27 abuts against the inner bottom surface of the blind hole 28.
The compensation clearance between the adjusting bolt and the brake piston 24 is L, the end part of the brake piston 24 extending out of the rocker arm 1 is in contact connection with the exhaust valve bridge 4 directly or through a socket 22 connected with the end part of the brake piston to perform exhaust action so as to open an exhaust valve, and the upper part of the brake cavity 23 is provided with an oil hole communicated with the third lubricating oil channel 16.
The utility model discloses have valve and rise reset function:
when the oil control valve is in an operation position, the oil control valve rod 7 moves downwards to block the second lubricating oil channel 14 and the third lubricating oil channel 16, a hydraulic sealing area is formed in the braking mechanism, and the clearance L is eliminated. When the exhaust cam 3 rotates to a certain angle and the roller contacts with the normal exhaust bulge 21, the swing amplitude of the rocker arm 1 is large, the lower part of the oil control valve rod 7 starts to contact with the reset pin 19 on the cylinder body and pushes the oil control valve rod 7 to move upwards and return to the non-operation position, the third lubricating oil channel 16 connected with the braking mechanism is communicated with the second lubricating oil channel 14, the oil pressure in the braking mechanism is discharged, and the gap L between the bottom surface of the braking piston 24 and the adjusting bolt 25 is reset.
The utility model discloses a theory of operation is:
when the engine works normally, the electromagnetic valve is in a cut-off state, the first lubricating oil channel 6, the second lubricating oil channel 14 and the third lubricating oil channel 16 on the rocker shaft 2 are always in an oil supply state, respectively lubricate the connecting pin 17 and the roller 18 and enter the brake mechanism through the oil control valve, and oil is supplied to the brake mechanism for lubricating a kinematic pair of a brake piston 24 matched with an oil hole on the upper part of the brake mechanism; the first brake oil passage 5 on the rocker shaft 2 has no pressure oil input. The oil control valve rod 7 is positioned at the upper non-operation position under the action of the return spring 11, the second lubricating oil channel 14 and the third lubricating oil channel 16 are always connected with the brake mechanism, an open lubricating oil chain exists in the rocker arm 1 at the moment, and the flow sequence is that the first lubricating oil channel 6 on the rocker arm shaft 2 → the second lubricating oil channel 14 → the annular groove 12 on the oil control valve rod 7 → the third lubricating oil channel 16 → the brake mechanism, so that the oil feeding state is always kept; when the exhaust cam 3 rotates until the compression-release type braking bulge 20 contacts with the roller 18 during operation, the reserved clearance value L in the braking mechanism is just equal to the sum of the lift of the compression-release type braking bulge 20 and the clearance of the exhaust valve, so that the lift generated by the compression-release type braking bulge 20 is not enough to make up the reserved clearance, and the exhaust valve bridge 4 cannot be opened to realize the exhaust function, which is the function of the reserved clearance. When the exhaust cam 3 rotates to the normal exhaust bulge 21 to contact with the roller 18, the valve lift is large, and after the reserved valve clearance is complemented, enough valve lift amount is provided to enable the exhaust valve to act, so that the exhaust valve is opened to realize normal exhaust action.
When the engine auxiliary brake is needed, the electromagnetic valve is in an open state, and the engine starts to supply oil to the oil control valve in the rocker arm 1 through the first brake oil channel 5 on the rocker arm shaft 2. The oil control valve rod 7 compresses the return spring 11 to be at a lower operating position under the action of oil pressure, so that the second lubricating oil channel 14 and the third lubricating oil channel 16 are blocked; at the moment, the originally opened lubricating oil chain is converted into a braking oil locking chain, hydraulic rigid connection is formed, and the gap L is eliminated; when the exhaust cam 3 rotates until the compression-release type brake bulge 20 contacts with the roller 18, because the brake mechanism and the rocker arm 1 are rigidly connected, the lift generated by the compression-release type brake bulge 20 can act on the brake piston 24 in proportion, and the exhaust valve bridge 4 is triggered to open the exhaust valve in advance to realize the brake function.
After the lift of the compression release type brake bulge 20 is finished, the exhaust cam 3 continues to rotate and is close to the normal exhaust bulge 21 to be in contact with the roller 18, the generated lift is increased, until the bottom of the oil control valve rod 7 is in contact with the cylinder body reset pin 19, the acting force of the oil control valve rod 7 and the cylinder body reset pin pushes the oil control valve rod 7 to move upwards and communicate the second lubricating oil channel 14 and the third lubricating oil channel 16, the oil control valve is located at a non-operation position, the brake oil locking chain is opened to drain oil, the hydraulic rigid connection formed at the position is released, the gap L is reset, normal exhaust valve lifting is achieved, and one brake cycle is finished. If the engine braking command is not released, the engine braking cycle will continue with the operation of the engine.
When the electromagnetic valve is closed, the auxiliary braking of the engine is finished, the brake oil does not enter the first brake oil channel 5 of the rocker arm shaft 2 any more, the oil control valve rod 7 is in a non-operation position under the action of the return spring 11, the lubricating oil chain is always kept open, all oil channels in the rocker arm 1 are in a communication state, and at the moment, the engine returns to a normal operation state.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a hydraulic pressure direct drive's supplementary braking rocker arm structure, rocking arm (1) sets up on rocking arm axle (2), the one end of rocking arm (1) is passed through drive mechanism and is connected with exhaust cam (3) contact, the other end of rocking arm (1) is provided with brake mechanism, brake mechanism's below is provided with air discharge door bridge (4) or valve, brake mechanism control air discharge door bridge (4) or the motion of valve, be provided with first braking oil duct (5) and first lubricated oil duct (6) on rocking arm axle (2), be provided with accuse fuel tap on rocking arm (1) between rocking arm axle (2) and brake mechanism, its characterized in that: the oil control valve comprises an oil control valve rod (7) and a valve cavity (8) with an opening at the lower end, the oil control valve rod (7) is arranged in the valve cavity (8), a gasket (9) is arranged at the lower part of the valve cavity (8), the lower end of the oil control valve rod (7) penetrates through the gasket (9) and extends out of the valve cavity (8), the lower part of the oil control valve rod (7) is a necking part, step surfaces (10) are formed at the upper part and the lower part of the oil control valve rod (7), a return spring (11) is sleeved outside the lower part of the oil control valve rod (7), one end of the return spring (11) is tightly propped against the step surfaces (10), the other end of the return spring is tightly propped against the gasket (9), the top of the oil control valve rod (7) is propped against the top surface of the valve cavity (8), and an annular groove (12; the rocker arm (1) is provided with a first brake oil duct (5) communicated with the rocker arm shaft (2) and a second brake oil duct (13) at the top of the valve cavity (8), a first lubricating oil duct (6) communicated with the rocker arm shaft (2), a second lubricating oil duct (14) communicated with an annular groove (12) on the oil control valve rod (7), a third lubricating oil duct (16) communicated with the annular groove (12) on the oil control valve rod (7) and the brake mechanism, and a fourth lubricating oil duct (15) communicated with the first lubricating oil duct (6) on the rocker arm shaft (2) and the transmission mechanism, wherein the oil control valve controls the on-off of the first lubricating oil duct (6) and the brake mechanism.
2. A hydraulic direct drive auxiliary brake rocker arm construction as claimed in claim 1, wherein: the transmission mechanism comprises a roller (18) connected with one end of the rocker arm (1) through a connecting pin (17) or a push rod arranged at one end of the rocker arm (1).
3. A hydraulic direct drive auxiliary brake rocker arm construction as claimed in claim 1, wherein: the lower end of the oil control valve rod (7) is provided with a reset pin (19).
4. A hydraulic direct drive auxiliary brake rocker arm construction according to any one of claims 1 to 3 wherein: the lower end of the oil control valve rod (7) is provided with a socket seat (22).
5. A hydraulic direct drive auxiliary brake rocker arm construction as claimed in claim 1, wherein: the brake mechanism comprises a brake cavity (23) with an opening at the lower end, a brake piston (24) is arranged at the lower end of the brake cavity (23), the lower end of the brake piston (24) extends out of the brake cavity (23), an adjusting bolt (25) is screwed on the rocker arm (1), the lower end of the adjusting bolt (25) extends into the brake cavity (23), the adjusting bolt (25) is positioned on the rocker arm (1) through a nut (26), a pre-tightening spring (27) is sleeved on the brake bolt (25) in the valve cavity (8), and the upper end of the pre-tightening spring (27) is tightly pressed on the top surface of the brake cavity (23) and the lower end of the pre-tightening spring is tightly pressed on the brake piston (24).
6. A hydraulic direct drive auxiliary brake rocker arm construction according to claim 5 wherein: the brake piston (24) is provided with a blind hole (28) from the upper plane downwards along the axial direction, and the lower end of the pre-tightening spring (27) is tightly propped against the inner bottom surface of the blind hole (28).
7. A hydraulic direct drive auxiliary brake rocker arm construction according to claim 5 or 6 wherein: the lower end of the brake piston (24) is provided with a socket (22).
8. A hydraulic direct drive auxiliary brake rocker arm construction as claimed in claim 1, wherein: the gasket (9) is limited by a clamp spring (29) clamped at the lower end of the valve cavity (8).
9. A hydraulic direct drive auxiliary brake rocker arm construction as claimed in claim 1, wherein: the bottom plane of the lower end of the oil control valve rod (7) is an arc surface.
10. A hydraulic direct drive auxiliary brake rocker arm construction as claimed in claim 1, wherein: and the upper end of the oil control valve rod (7) is provided with a chamfer which is favorable for brake oil to enter and act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147050.7U CN210178434U (en) | 2019-07-19 | 2019-07-19 | Hydraulic direct-driven auxiliary brake rocker arm structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921147050.7U CN210178434U (en) | 2019-07-19 | 2019-07-19 | Hydraulic direct-driven auxiliary brake rocker arm structure |
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| Publication Number | Publication Date |
|---|---|
| CN210178434U true CN210178434U (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921147050.7U Active CN210178434U (en) | 2019-07-19 | 2019-07-19 | Hydraulic direct-driven auxiliary brake rocker arm structure |
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| CN (1) | CN210178434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284937A (en) * | 2019-07-19 | 2019-09-27 | 浙江康和机械科技有限公司 | A kind of hydraulic auxiliary braking rocker structure directly driven |
| CN112065525A (en) * | 2020-09-09 | 2020-12-11 | 潍柴动力股份有限公司 | Rocker arm mechanism and engine assembly |
-
2019
- 2019-07-19 CN CN201921147050.7U patent/CN210178434U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284937A (en) * | 2019-07-19 | 2019-09-27 | 浙江康和机械科技有限公司 | A kind of hydraulic auxiliary braking rocker structure directly driven |
| CN112065525A (en) * | 2020-09-09 | 2020-12-11 | 潍柴动力股份有限公司 | Rocker arm mechanism and engine assembly |
| US11891924B2 (en) | 2020-09-09 | 2024-02-06 | Weichai Power Co., Ltd. | Rocker arm mechanism and engine assembly |
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