CN203974789U - A kind of drag master cylinder - Google Patents
A kind of drag master cylinder Download PDFInfo
- Publication number
- CN203974789U CN203974789U CN201420422421.9U CN201420422421U CN203974789U CN 203974789 U CN203974789 U CN 203974789U CN 201420422421 U CN201420422421 U CN 201420422421U CN 203974789 U CN203974789 U CN 203974789U
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- Prior art keywords
- piston
- oil
- fuel
- spring
- cylinder body
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- Expired - Fee Related
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The utility model relates to a kind of drag master cylinder, comprise spring brake cylinder, cylinder body, lubricating cup, first piston, the second piston, fuel inlet fitting, discharge outlet, described cylinder body is provided with two fuel inlet fittings, described fuel inlet fitting comprises oil inlet valve, oil inlet valve skeleton and oil-feed screw, described oil inlet valve is in line check valve, in described cylinder body, be provided with pressure chamber, in pressure chamber, be provided with first piston and the second piston, on described first piston and the second piston, be separately installed with first piston spring and the second piston spring, the rear end of described first piston and the second piston is respectively equipped with apron, between described cylinder body front end and described two fuel inlet fittings, be provided with discharge outlet, oil outlet place is provided with cleaning screw, the rear end of described first piston is provided with groove, spring brake cylinder is fixedly connected with cylinder body.The utility model oil charging structure is independent, and apron is difficult for cutting, and the adjusting of its push rod when mounted becomes flexibly, simple in structure, easy to operate.
Description
Technical field
The utility model relates to automobile brake technical field, particularly relates to a kind of drag master cylinder.
Background technology
Current automobile brake technology mainly adopts hydraulic braking, and common hydraulic braking master cylinder is with reference to shown in Fig. 1, and existing hydraulic braking master cylinder exists following shortcoming:
One, when the quick back and forth movement of piston, from oil outlet, discharge air, because the effect (effect of check valve) of delivery valve produces pull of vacuum in pressure chamber, impel braking liquid to enter from piston fuel feed hole 34 (being generally 6 or 4 apertures), back down check sheet 36, then from the oil groove of pressure apron 35 entry pressure chamber 33 by force.The flow that such oil-feed mode has determined to enter oil circuit is very little, even at pressure apron 35 and the cylinder inner bore magnitude of interference, is all not easy tight oil larger in the situation that, to Installation and Debugging, brings very big inconvenience.
Two, in working order, pressure apron 35 back and forth movements on piston are during by the compensation orifice 32 on cylinder body (aperture is 0.7mm), the lip of pressure apron 35 is easy to be cut, particularly at pressure apron 35, just passed through the moment of compensation orifice 32, the oil pressure producing reacts on pressure apron 35, make pressure apron 35 back tensioners, clamp-on compensation orifice 32, make so greatly reduce the service life of product.
Three, under normal circumstances, compensation orifice is generally 1-1.5mm apart from pressure apron diameter, and when mounted, the adjusting of push rod must be controlled at push rod and come directly towards while just contacting or leaving a little bottom, piston push rod hole product like this, the setting range of push rod diminishes, and difficulty strengthens.
Four,, during common water brake master cylinder Installation and Debugging, can only on brake cylinder, exit, operation inconvenience.
Above-mentioned existing drag master cylinder is not suitable for the braking of loader conventionally, and the brake of existing loader is generally the front-wheel trailing wheel of stopping again of first stopping, and brake not steady, and existing loader does not have break brake.
As can be seen here, above-mentioned existing a kind of drag master cylinder, in structure and use, still has inconvenience and defect, and is urgently further improved.How to found a kind of good braking effect, convenient, the simple in structure new drag master cylinder of venting, real one of the current important research and development problem that belongs to.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of drag master cylinder, makes its good braking effect, venting convenience, simple in structure.
For solving the problems of the technologies described above, the utility model provides a kind of drag master cylinder, comprise spring brake cylinder, cylinder body, lubricating cup, first piston, the second piston, fuel inlet fitting, discharge outlet, described cylinder body is provided with two fuel inlet fittings, each fuel inlet fitting is connected with lubricating cup respectively, described fuel inlet fitting comprises oil inlet valve, oil inlet valve skeleton and oil-feed screw, described oil inlet valve is in line check valve, in described cylinder body, be provided with pressure chamber, in described pressure chamber, be provided with first piston and the second piston, on described first piston and the second piston, be separately installed with first piston spring and the second piston spring, the front end of the second piston spring is provided with spring perch, the rear end of described first piston and the second piston is respectively equipped with apron, between described cylinder body front end and described two fuel inlet fittings, be respectively equipped with discharge outlet, described discharge outlet comprises fuel-displaced valve, fuel-displaced screw, discharge outlet forcing screw, described discharge outlet is provided with oil outlet, oil outlet place is provided with cleaning screw, the rear end of described first piston is provided with groove, spring brake cylinder is fixedly connected with cylinder body, discharge outlet between two described fuel inlet fittings is provided with fuel-displaced single-pass, the discharge outlet of described cylinder body front end is provided with fuel-displaced two-way.
Further, be provided with oil inlet valve spring and steel ball between described oil inlet valve and cylinder body, described fuel inlet fitting is connected by oil-feed screw with lubricating cup, is provided with lubricating cup packing seal between oil-feed screw and fuel inlet fitting.
Between described fuel-displaced valve and pressure chamber, be provided with delivery valve door spring.
Described spring brake cylinder comprises push rod, protecgulum, spring, rubber cup and compressed air brake cylinder, and described push rod is arranged in the groove of first piston.
Described lubricating cup is provided with oil cup cap, is provided with oil cup cap packing seal between described lubricating cup and oil cup cap.
Between described discharge outlet and cylinder body, be provided with copper packing, between described fuel-displaced single-pass and fuel-displaced two-way and discharge outlet, be respectively equipped with copper packing.
Adopt after such design, the utility model at least has the following advantages:
Drag master cylinder of the present utility model is provided with two oil cylinders, between two oil cylinders, is provided with discharge outlet, and the chamber, front and back to pressure chamber, controls and drain the oil and oil-feed more flexibly respectively.Fuel inlet fitting adopts in line check valve, without using apron, makes like this oil-feed become absolute construction, has not also existed apron to cut phenomenon, and the adjusting of its push rod when mounted becomes flexibly, and when regulating, push rod comes directly towards and can contact or propelling piston slightly.
Bleed screw has all been installed in oil outlet position, chamber, front and back, makes product directly on master cylinder, to oil circuit, carry out discharged air when debugging, does not need to wheel cylinder, to exit again.
Drag master cylinder of the present utility model can be applied and the engineering machinery vehicles such as loader, adopt air-cut-off break principle, range of use is wide, and drag master cylinder hand of the present utility model, pin can be controlled brake, can realize stop the again brake modes of front-wheel of the trailing wheel of first stopping, brake very steady.
Accompanying drawing explanation
Above-mentioned is only the general introduction of technical solutions of the utility model, and in order to better understand technological means of the present utility model, below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail.
Fig. 1 is existing drag pump structure schematic diagram.
Fig. 2 is the structural representation of a kind of drag master cylinder of the utility model.
Fig. 3 is the utility model birds-eye view.
Fig. 4 is the structural representation sketch of spring brake cylinder of the present utility model.
The specific embodiment
Shown in Fig. 2-4, the utility model provides a kind of drag master cylinder, comprise spring brake cylinder 1, cylinder body 13, lubricating cup 3, first piston 14, the second piston 16, fuel inlet fitting, discharge outlet, described cylinder body 13 is provided with two fuel inlet fittings, each fuel inlet fitting is connected with lubricating cup 3 respectively, described fuel inlet fitting comprises oil inlet valve 7, oil inlet valve skeleton and oil-feed screw 6, described oil inlet valve 7 is in line check valve, in described cylinder body 13, be provided with pressure chamber 11, in described pressure chamber 11, be provided with first piston 14 and the second piston 16, on described first piston 14 and the second piston 16, be separately installed with first piston spring 15 and the second piston spring 17, the front end of the second piston spring 17 is provided with spring perch, described first piston 14 and the rear end of the second piston 16 are respectively equipped with apron 12, between described cylinder body 13 front ends and two described fuel inlet fittings, be respectively equipped with discharge outlet, described discharge outlet comprises fuel-displaced valve 19, fuel-displaced screw 23, discharge outlet forcing screw 21, described discharge outlet is provided with oil outlet, oil outlet place is provided with cleaning screw 20, the rear end of described first piston 14 is provided with groove, and spring brake cylinder 1 is fixedly connected with cylinder body 13.Discharge outlet between two described fuel inlet fittings is provided with fuel-displaced single-pass 26, and the discharge outlet of described cylinder body front end is provided with fuel-displaced two-way 25.
Preferably, be provided with oil inlet valve spring 8 and steel ball 10 between described oil inlet valve 7 and cylinder body 13, described fuel inlet fitting is connected by oil-feed screw 4 with lubricating cup, is provided with lubricating cup packing seal 5 between oil-feed screw 4 and fuel inlet fitting.Between described fuel-displaced valve and pressure chamber 11, be provided with delivery valve door spring 18.
Described lubricating cup is provided with oil cup cap 9, between described lubricating cup 3 and oil cup cap 9, is provided with oil cup cap packing seal 2.Between described discharge outlet and cylinder body, be provided with copper packing 22, between described fuel-displaced single-pass 26 and fuel-displaced two-way 25 and discharge outlet, be respectively equipped with copper packing 24.
Described spring brake cylinder 1 comprises push rod 27, protecgulum 28, spring 31, rubber cup 30 and compressed air brake cylinder 29, and described push rod 27 is arranged in the groove of first piston 14.
During drag, the pressurized air in the compressed air brake cylinder of spring brake cylinder promotes spring-compressed, and push rod is pushed, thereby promotion first piston and the second piston move, compression first piston spring and the second piston spring, and oil flows into from lubricating cup, realizes braking.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, those skilled in the art utilize the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drop in protection domain of the present utility model.
Claims (6)
1. a drag master cylinder, it is characterized in that: comprise spring brake cylinder, cylinder body, lubricating cup, first piston, the second piston, fuel inlet fitting, discharge outlet, described cylinder body is provided with two fuel inlet fittings, each fuel inlet fitting is connected with lubricating cup respectively, described fuel inlet fitting comprises oil inlet valve, oil inlet valve skeleton and oil-feed screw, described oil inlet valve is in line check valve, in described cylinder body, be provided with pressure chamber, in described pressure chamber, be provided with first piston and the second piston, on described first piston and the second piston, be separately installed with first piston spring and the second piston spring, the front end of the second piston spring is provided with spring perch, the rear end of described first piston and the second piston is respectively equipped with apron, between described cylinder body front end and described two fuel inlet fittings, be respectively equipped with discharge outlet, described discharge outlet comprises fuel-displaced valve, fuel-displaced screw, discharge outlet forcing screw, described discharge outlet is provided with oil outlet, oil outlet place is provided with cleaning screw, the rear end of described first piston is provided with groove, spring brake cylinder is fixedly connected with cylinder body, discharge outlet between two described fuel inlet fittings is provided with fuel-displaced single-pass, the discharge outlet of described cylinder body front end is provided with fuel-displaced two-way.
2. a kind of drag master cylinder according to claim 1, it is characterized in that: between described oil inlet valve and cylinder body, be provided with oil inlet valve spring and steel ball, described fuel inlet fitting is connected by oil-feed screw with lubricating cup, is provided with lubricating cup packing seal between oil-feed screw and fuel inlet fitting.
3. a kind of drag master cylinder according to claim 1, is characterized in that: between described fuel-displaced valve and pressure chamber, be provided with delivery valve door spring.
4. a kind of drag master cylinder according to claim 1, is characterized in that: described spring brake cylinder comprises push rod, protecgulum, spring, rubber cup and compressed air brake cylinder, and described push rod is arranged in the groove of first piston.
5. a kind of drag master cylinder according to claim 1, is characterized in that: described lubricating cup is provided with oil cup cap, is provided with oil cup cap packing seal between described lubricating cup and oil cup cap.
6. a kind of drag master cylinder according to claim 1, is characterized in that: between described discharge outlet and cylinder body, be provided with copper packing, between described fuel-displaced single-pass and fuel-displaced two-way and discharge outlet, be respectively equipped with copper packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422421.9U CN203974789U (en) | 2014-07-29 | 2014-07-29 | A kind of drag master cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420422421.9U CN203974789U (en) | 2014-07-29 | 2014-07-29 | A kind of drag master cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203974789U true CN203974789U (en) | 2014-12-03 |
Family
ID=51972262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420422421.9U Expired - Fee Related CN203974789U (en) | 2014-07-29 | 2014-07-29 | A kind of drag master cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203974789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673741A (en) * | 2016-04-07 | 2016-06-15 | 聂瑞波 | Brake pump of loader |
-
2014
- 2014-07-29 CN CN201420422421.9U patent/CN203974789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105673741A (en) * | 2016-04-07 | 2016-06-15 | 聂瑞波 | Brake pump of loader |
| CN105673741B (en) * | 2016-04-07 | 2018-04-20 | 聂瑞波 | A kind of loading machine brake pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20160729 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |