CN203822763U - Hydraulic system of ring rolling machine - Google Patents
Hydraulic system of ring rolling machine Download PDFInfo
- Publication number
- CN203822763U CN203822763U CN201420240970.4U CN201420240970U CN203822763U CN 203822763 U CN203822763 U CN 203822763U CN 201420240970 U CN201420240970 U CN 201420240970U CN 203822763 U CN203822763 U CN 203822763U
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- China
- Prior art keywords
- valve
- control pressure
- hydraulic control
- pressure retaining
- retaining valve
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic system of a ring rolling machine. The hydraulic system comprises a two-position two-way hydraulic valve, a hydraulic control pressure retaining valve, an overflow valve, a gear pump, a motor, a one-way valve, a pressure gage, a two-position four-way hydraulic valve and a working oil cylinder. The two-position two-way hydraulic valve is connected with the overflow valve through the hydraulic control pressure retaining valve, the overflow valve is connected with the gear pump and the one-way valve, the motor is connected with the gear pump, the pressure gage and the two-position four-way hydraulic valve are both connected with the one-way valve, and the working oil cylinder is connected with the two-position four-way hydraulic valve. According to the hydraulic system, the self-designed-and-manufactured hydraulic control pressure retaining valve is added in the hydraulic system, and therefore normal operation of the ring rolling machine is guaranteed.
Description
Technical field
The utility model relates to a kind of hydraulic system, particularly relates to a kind of reaming ring rolls hydraulic system.
Background technique
160 type reaming ring rolls, control system is by HYDRAULIC CONTROL SYSTEM, the basic functional principle of his hydraulic system is: gear pump, under the drive of three phase motor, is transported to the hydraulic oil of fuel tank in hydraulic system, and the size of the pressure of hydraulic system realizes by adjusting relief valve.In the time will carrying out reaming and roll bearing ferrule blanks, connect two-position four-way hydrovalve, hydraulic oil enters the upper oil cavitie of hydraulic jack, and the hydraulic oil of the lower oil cavitie of hydraulic jack is got back to fuel tank through two-position four-way hydrovalve.After completing a bearing ferrule blanks reaming and rolling, disconnect two-position four-way hydrovalve, now, hydraulic oil enters the lower oil cavitie of hydraulic jack, and the upper oil cavitie of hydraulic jack is got back to fuel tank through two-position four-way hydrovalve.When reaming ring rolls does not carry out reaming and rolls, can connect bi-bit bi-pass hydrovalve and make hydraulic system off-load, reduce power consumption.
160 type reaming ring rolls were normally worked after 2--3 hour, although the forge hot processing temperature of bearing ring keeps 1100 ℃--850 ℃ of scopes, the pressure of reaming ring rolls is inadequate, and bearing ferrule blanks is expanded not opened, can not reach product size requirement, even cannot roll.When bearing ferrule blanks temperature is down to 850 ℃ of left and right, because the pressure of reaming ring rolls is inadequate, just more obvious on the impact of bearing ring product processing quality.Produce thus the bearing ferrule blanks that need do over again and reach 40% left and right.Think: the reason that causes reaming ring rolls hydraulic system pressure deficiency is that hydraulic oil is too large through relief valve loss, and original-pack 6.3Mpa relief valve does not mate with whole hydraulic system, and the relief valve of changing other models cannot be arranged on former hydraulic station again.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of reaming ring rolls hydraulic system, and it is by added the hydraulic control pressure retaining valve of self design in hydraulic system, thereby has guaranteed that reaming ring rolls normally works.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of reaming ring rolls hydraulic system, it is characterized in that, it comprises bi-bit bi-pass hydrovalve, hydraulic control pressure retaining valve, relief valve, gear pump, motor, one-way valve, pressure gauge, two-position four-way hydrovalve, operating cylinder, bi-bit bi-pass hydrovalve is connected with relief valve through hydraulic control pressure retaining valve, relief valve is connected with gear pump, one-way valve, motor is connected with gear pump, pressure gauge, two-position four-way hydrovalve are all connected with one-way valve, and operating cylinder is connected with two-position four-way hydrovalve.
Preferably, described hydraulic control pressure retaining valve comprises spool baffle plate, hydraulic control pressure retaining valve spool, hydraulic control pressure retaining valve valve seat, hydraulic control pressure retaining valve spool is located on hydraulic control pressure retaining valve valve seat, hydraulic control pressure retaining valve spool is provided with spool baffle plate outward, hydraulic control pressure retaining valve valve seat surrounding respectively with connect operating cylinder lower cavity oil pipe, connect operating cylinder epicoele oil pipe, relief valve filler opening, relief valve oil outlet be connected.
Preferably, the model of described hydraulic control pressure retaining valve valve seat is selected QT700-2, carries out normalizing heat treatment before processing, makes its hardness reach HB235-250.
Preferably, the model of described hydraulic control pressure retaining valve spool is selected 40Cr, carries out quenching heat treatment and make its hardness reach HRC52-54 after processing.
Preferably, described hydraulic control pressure retaining valve spool and hydraulic control pressure retaining valve valve seat adopt the Spielpassung of H6/h6.
Positive progressive effect of the present utility model is: the utility model is by added the hydraulic control pressure retaining valve of self design in hydraulic system, thereby has guaranteed that reaming ring rolls normally works.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model reaming ring rolls hydraulic system.
Fig. 2 is the structural representation of hydraulic control pressure retaining valve one side in the utility model.
Fig. 3 is the structural representation of hydraulic control pressure retaining valve another side in the utility model.
Fig. 4 is the structural representation of hydraulic control pressure retaining valve spool in the utility model.
Fig. 5 is the structural representation of spool baffle plate in the utility model.
Embodiment
Below in conjunction with accompanying drawing, provide the utility model preferred embodiment, to describe the technical solution of the utility model in detail.
As shown in Figures 1 to 5, the utility model reaming ring rolls hydraulic system comprises bi-bit bi-pass hydrovalve 9, hydraulic control pressure retaining valve 10, relief valve 3, gear pump 13, motor 12, one-way valve 11, pressure gauge 14, two-position four-way hydrovalve 16, operating cylinder 15, bi-bit bi-pass hydrovalve 9 is connected with relief valve 3 through hydraulic control pressure retaining valve 10, relief valve 3 is connected with gear pump 13, one-way valve 11, motor 12 is connected with gear pump 13, pressure gauge 14, two-position four-way hydrovalve 16 are all connected with one-way valve 11, and operating cylinder 15 is connected with two-position four-way hydrovalve 16.
Hydraulic control pressure retaining valve 10 comprises spool baffle plate 1, hydraulic control pressure retaining valve spool 2, hydraulic control pressure retaining valve valve seat 4, hydraulic control pressure retaining valve spool 2 is located on hydraulic control pressure retaining valve valve seat 4, the outer spool baffle plate 1 that is provided with of hydraulic control pressure retaining valve spool 2, hydraulic control pressure retaining valve valve seat 4 surroundings respectively with connect operating cylinder lower cavity oil pipe 5, connect operating cylinder epicoele oil pipe 8, relief valve filler opening 6, relief valve oil outlet 7 be connected.The model of hydraulic control pressure retaining valve valve seat 4 is selected QT700-2, carries out normalizing heat treatment before processing, makes its hardness reach HB235-250.The model of hydraulic control pressure retaining valve spool 2 is selected 40Cr, carries out quenching heat treatment and make its hardness reach HRC52-54 after processing.Hydraulic control pressure retaining valve spool 2 and hydraulic control pressure retaining valve valve seat 4 adopt the Spielpassung of H6/h6.
On hydraulic control pressure retaining valve, there are four interfaces, are connected with the filler opening of relief valve, the oil outlet of relief valve (oil sump tank), operating cylinder epicoele oil pipe, operating cylinder lower cavity oil pipe respectively.When hydraulic pressure oil is when two-position four-way hydrovalve enters operating cylinder epicoele, oil cylinder piston moves downward, be that reaming ring rolls starts that bearing ferrule blanks is carried out to reaming and rolls, when bearing ferrule blanks being carried out to reaming rolling, because hydraulic control pressure retaining valve is connected with operating cylinder epicoele oil pipe, therefore hydraulic control pressure retaining valve spool slides to the left side under the effect of hydraulic pressure oil, thereby oil outlet (oil sump tank) opening of relief valve is reduced, play the effect of choked flow throttling, reach the object that keeps the required working pressure of hydraulic system.If during design, this oil outlet of hydraulic control pressure retaining valve spool energy contract fully, can cause 4 kilowatts of 4 grades of Oil pump electrical machinery overburdening, makes hydraulic system cisco unity malfunction.When hydraulic pressure oil is when two-position four-way hydrovalve enters operating cylinder cavity of resorption, oil cylinder piston moves upward, and completes once the reaming of bearing ferrule blanks is rolled.Because hydraulic control pressure retaining valve is connected with operating cylinder lower cavity oil pipe, so hydraulic control pressure retaining valve spool slides to the right under the effect of hydraulic pressure oil, recovers initial position.
Above-described specific embodiment; the technical problem of solution of the present utility model, technological scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a reaming ring rolls hydraulic system, it is characterized in that, it comprises bi-bit bi-pass hydrovalve, hydraulic control pressure retaining valve, relief valve, gear pump, motor, one-way valve, pressure gauge, two-position four-way hydrovalve, operating cylinder, bi-bit bi-pass hydrovalve is connected with relief valve through hydraulic control pressure retaining valve, relief valve is connected with gear pump, one-way valve, motor is connected with gear pump, and pressure gauge, two-position four-way hydrovalve are all connected with one-way valve, and operating cylinder is connected with two-position four-way hydrovalve.
2. reaming ring rolls hydraulic system as claimed in claim 1, it is characterized in that, described hydraulic control pressure retaining valve comprises spool baffle plate, hydraulic control pressure retaining valve spool, hydraulic control pressure retaining valve valve seat, hydraulic control pressure retaining valve spool is located on hydraulic control pressure retaining valve valve seat, hydraulic control pressure retaining valve spool is provided with spool baffle plate outward, hydraulic control pressure retaining valve valve seat surrounding respectively with connect operating cylinder lower cavity oil pipe, connect operating cylinder epicoele oil pipe, relief valve filler opening, relief valve oil outlet be connected.
3. reaming ring rolls hydraulic system as claimed in claim 2, is characterized in that, the model of described hydraulic control pressure retaining valve valve seat is selected QT700-2, carries out normalizing heat treatment before processing, makes its hardness reach HB235-250.
4. reaming ring rolls hydraulic system as claimed in claim 2, is characterized in that, the model of described hydraulic control pressure retaining valve spool is selected 40Cr, carries out quenching heat treatment and make its hardness reach HRC52-54 after processing.
5. reaming ring rolls hydraulic system as claimed in claim 2, is characterized in that, described hydraulic control pressure retaining valve spool and hydraulic control pressure retaining valve valve seat adopt the Spielpassung of H6/h6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420240970.4U CN203822763U (en) | 2014-05-13 | 2014-05-13 | Hydraulic system of ring rolling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420240970.4U CN203822763U (en) | 2014-05-13 | 2014-05-13 | Hydraulic system of ring rolling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203822763U true CN203822763U (en) | 2014-09-10 |
Family
ID=51478272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420240970.4U Expired - Fee Related CN203822763U (en) | 2014-05-13 | 2014-05-13 | Hydraulic system of ring rolling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203822763U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953592A (en) * | 2014-05-13 | 2014-07-30 | 镇江中宇轴承有限公司 | Hydraulic system for hole reaming and ring rolling machine |
-
2014
- 2014-05-13 CN CN201420240970.4U patent/CN203822763U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953592A (en) * | 2014-05-13 | 2014-07-30 | 镇江中宇轴承有限公司 | Hydraulic system for hole reaming and ring rolling machine |
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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: 20140910 Termination date: 20150513 |
|
| EXPY | Termination of patent right or utility model |