CN2091948U - Oil-distributing and operating mechanism for hydraulic rock drill - Google Patents
Oil-distributing and operating mechanism for hydraulic rock drill Download PDFInfo
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- CN2091948U CN2091948U CN 91212676 CN91212676U CN2091948U CN 2091948 U CN2091948 U CN 2091948U CN 91212676 CN91212676 CN 91212676 CN 91212676 U CN91212676 U CN 91212676U CN 2091948 U CN2091948 U CN 2091948U
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Abstract
The utility model discloses an oil-distributing and operating mechanism for a hydraulic rock drill, comprising an operating valve, a pressure oil channel, an oil matching sliding valve, an oil return channel, an oil channel for pushing the value, an accumulator, and an air and water linkage valve. The operating valve is positioned inside the oil return channel, and the inside of the operating valve is provided with an operating valve inner cavity, an oil return hole, a balancing hole, and an air passage; the oil matching sliding valve is positioned inside the inlet of the pressure oil channel, and the oil return channel is communicated with a low pressure cavity and is connected with the oil return hole of the operating valve. The pressure oil channel is communicated with the normal pressure cavity of the oil matching sliding valve, a storage cavity, the front cavity of the piston. An alternating cavity is communicated with the back cavity of the piston. The operating valve is positioned on the oil return channel, is convenient for operation, and has accurate control. The positioning of drilling accessories for quick drilling and slow drilling can be satisfied. The utility model has the advantages of the multiple use with one value and simple structure, and the utility model can be suitable to various operating condition works.
Description
The utility model relates to the parts of hydraulic gate.
Impact piston high frequency under the hydraulic gate duty moves back and forth by operation, oil distribution mechanism and switches oily stream fast and realize.
Fig. 1 is the front view of existing operation oil distribution mechanism, and Fig. 2 is a vertical view, and shows the broken section structure.As shown in the figure, there are operation valve (1), pressure oil duct (2) in this mechanism, join cunning valve (3), back oil road (4), pushes away valve oil road (5) and accumulator (6).Operation valve (1) has handle, off-load road and oil-in; Joining has common pressure chamber (7), alternating cavity (8) and low pressure chamber (9) on the cunning valve (3), the differential principle that utilizes this valve body convex platform end area not wait, and under the effect of pressure medium, but the valve body move left and right; The pressure oil duct communicates with the accumulation of energy chamber (10) of the common pressure chamber of joining cunning valve, accumulator, the ante-chamber (11) of impact piston, back oil road (4) communicates with the lumen (12) of low pressure chamber of joining cunning valve and impact piston, joining the alternating cavity of cunning valve communicates with the back cavity of reciprocating piston (13), join the low pressure chamber section end face of cunning valve body and push away valve oil road (5) and join, the other end that pushes away the valve oil road communicates with the signal hole (14) in impact piston chamber.
The course of work of operating, joining oil is, the rotating operation valve, connect oil-in, pressure oil enters the ante-chamber of joining cunning valve common pressure chamber and impact piston through the pressure oil duct, and the pressure oil that enters common pressure chamber utilizes differential principle to promote valve body and moves to left, because common pressure chamber and the alternating cavity of this moment communicate, partial pressure oil then enters alternating cavity, then enter the impact piston back cavity, because the back cavity face area of impact piston is greater than the face area of ante-chamber step, then impact piston stroke.When joining cunning valve body when moving to left end, as shown in Figure 2, common pressure chamber and alternating cavity sealing, alternating cavity communicates with low pressure chamber, and it is low-pressure state that impact piston back cavity oil flows into the loop thus.At this moment, the pressure oil effect of impact piston ante-chamber makes backward stroke of the piston, when the backhaul certain position is connected the signal hole, ante-chamber pressure oil communicates with pushing away the valve oil road, and normal pressure oil enters and pushes away the valve oil road, utilizes the differential principle of joining cunning valve, the promotion valve body moves to right, when moving to right certain distance, join the common pressure chamber of cunning valve and connect alternating cavity once more, pressure oil enters the impact piston back cavity once more thus and makes it stroke once more, so repeatedly, the impact piston high frequency is moved back and forth.In addition, when common pressure chamber of joining cunning valve and alternating cavity sealing, or during the impact piston stroke, the normal pressure oil of piston ante-chamber, part normal pressure oil enters the accumulation of energy chamber (10) of accumulator by pressure oil duct (2), and compressed septum (15) distortion and accumulation of energy are when common pressure chamber communicates once more with alternating cavity, the anti-feed pressure oil duct of this accumulation of energy pressure oil, the pressure energy of additional impact piston high speed stroke.
Existing hammer drill is when work, and the cooling water of control is supplied with by the cooling water pipe that passes the impact piston central through hole (16) separately.
The shortcoming of prior art: because the operation valve is positioned at pressure oil duct import department, the valve body radial pressure is big, is difficult to control during operation, and when shutdown, causes partial pressure oil to continue to enter oil duct, causes that the impact piston after the shutdown continues to impact.In addition, the barrier film of accumulator (15) is " W " shape, and response performance is poor; Cooling water is controlled separately, is difficult to realize that oil-feed promptly supplies water or shut down the unified control of promptly cutting off the water.
The purpose of this utility model provides a kind of novel operation, oil distribution mechanism, and this operation, oil distribution mechanism have overcome the above-mentioned shortcoming of prior art.
The technical scheme of dealing with problems is as follows:
Fig. 3 is a structural front view of the present utility model; Fig. 4 is a vertical view, and shows the part section structure; Fig. 5 is the A-A sectional view of Fig. 4, promptly operates the section of structure of valve; Fig. 6 is the B-B sectional drawing of Fig. 5; Fig. 7 is the C-C sectional drawing of Fig. 5; Fig. 8 is the D-D sectional drawing of Fig. 5.
Suggestion Fig. 4 is the specification digest accompanying drawing.
Of the present utility modelly join the import (18) that cunning valve (17) is positioned at the pressure oil duct and locate, drainback passage (19) is arranged in this valve body, this drainback passage communicates with low pressure chamber by the hole on the valve body (20), another terminated operation valve (21), each back oil road of low pressure chamber and other communicate and form the back oil road of this mechanism.Drainback passage (19) is this mechanism back oil road part, and this is an embodiment of this mechanism.This section back oil road also can be communicated with low pressure chamber and operation valve (21) by other position perforates of body.Pressure oil duct (22) communicates with the accumulation of energy chamber of the common pressure chamber of joining cunning valve, accumulator, the ante-chamber of impact piston.Be provided with off-load road (23), this off-load road communicates with the pressure oil duct.Operation valve (21) is positioned at back oil road, and this valve body has inner chamber (24), and spill port (25), unloading hole (26) are arranged on the valve body, see Fig. 7, Fig. 8, the logical oil return outlet of inner chamber (24), spill port (25) is corresponding with back oil road, and unloading hole (26) is corresponding with off-load road (23).
When the utility model was treated duty, back oil road ended, and normal pressure oil is by the off-load road, through unloading hole, operation valve insertion oil return off-load.During work, the rotating operation valve, unloading hole and the sealing of off-load road, spill port and back oil road are connected, and join the same way as fuel feeding of cunning valve by prior art, make impact piston stroke and backhaul, are duty during promptly with the connection back oil road.Because the operation valve is positioned on the back oil road, return pressure is low, and is little to the valve body radial pressure, makes the operation valve be convenient to control and grasp, and operation accurately.
Embodiment.Example structure is provided by Fig. 4 to Fig. 8.The spill port of embodiment (25) has been located throttling channel (27).When hammer drill is started working, at first connect the loop, because recirculating oil quantity is little with throttling channel, join cunning valve and join oil at a slow speed, the impact piston low frequency moves back and forth, and realizes beating the location slowly when drilling tool is started working, connect the loop with spill port then and realize beating soon, to satisfy the needs of operating mode.Embodiment is provided with Pneumatic-hydraulic interlocked valve (28), air flue (29), water channel (30), sees Fig. 3; On the operation valve body airway (31) is arranged, see Fig. 6; Airway (31) is corresponding with air flue (29), is used for connecting or cutoff pressure gas, and air flue (29) communicates with the air cavity (32) of Pneumatic-hydraulic interlocked valve, and water channel communicates with the water cavity (33) of Pneumatic-hydraulic interlocked valve, and water cavity (33) communicates with cooling water pipe (34).Figure 3 shows that the water supply state, promptly pressed gas enters air cavity (32), overcomes the spring force spool and moves to right, and connects the water route.Connect gas circuit when rotating operation valve hammer drill is started working, pressed gas is opened Pneumatic-hydraulic interlocked valve and is supplied water at once, when the rotating operation valve is shut down; end gas circuit at once, the spring action of Pneumatic-hydraulic interlocked valve, spool moves to left; stop to supply water by the water route, realize interlock, multi-purpose valve.In addition, the accumulator barrier film (35) of embodiment " W " shape of changing prior art for "
" shape, to improve the fast-response energy under the pressure condition, the accumulator air chamber is filled with gas in (36), as nitrogen.
The utility model is convenient to operation, precise control, Pneumatic-hydraulic interlocked realization multi-purpose valve, and accumulator barrier film response performance is good, simple in structure, is suitable for various working condition operations.
Claims (4)
1, a kind of operation of hydraulic gate, oil distribution mechanism comprise operation valve, pressure oil duct, join cunning valve, back oil road, push away valve oil road and accumulator, and be described:
A. joining cunning valve has common pressure chamber, alternating cavity and low pressure chamber, and alternating cavity communicates with the impact piston back cavity, and low pressure chamber communicates with back oil road,
B. the pressure oil duct communicates with the accumulation of energy chamber of the common pressure chamber of joining cunning valve, accumulator, the ante-chamber of impact piston,
C. push away valve oil road one end and communicate with signal hole on the impact piston chamber, the other end with join cunning valve body low pressure chamber section end face and join,
D. the impact piston lumen communicates with back oil road,
It is characterized in that:
(1) joining cunning valve [17] is positioned at pressure oil duct oil-in [18] and locates, drainback passage [19] is arranged in this valve body, and this drainback passage communicates with low pressure chamber by the hole on the valve body [20], another terminated operation valve [21], or establish the hole link low pressure chamber in addition and operate valve [21]
(2) off-load road [23] is arranged, this off-load road communicates with the pressure oil duct,
(3) operation valve [21] is positioned at back oil road, and this valve body has inner chamber [24], and spill port [25] is arranged on the valve, unloading hole [26], and spill port is corresponding with back oil road, and unloading hole is corresponding with the off-load road, the logical oil return outlet of inner chamber [24].
2, according to the described operation of claim 1, oil distribution mechanism, the spill port (25) that it is characterized in that operating on the valve has been located throttling channel (27).
3, according to the described operation of claim 1, oil distribution mechanism, it is characterized in that having Pneumatic-hydraulic interlocked valve (28), air flue (29), water channel (30), the operation valve body has airway (31), described airway is corresponding with air flue, air flue (29) communicates with the air cavity (32) of Pneumatic-hydraulic interlocked valve, water channel communicates with the water cavity (33) of Pneumatic-hydraulic interlocked valve, and the water cavity of Pneumatic-hydraulic interlocked valve communicates with cooling water pipe again.
4, according to the described operation of claim 1, oil distribution mechanism, the barrier film (35) that it is characterized in that accumulator for "
" shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91212676 CN2091948U (en) | 1991-05-15 | 1991-05-15 | Oil-distributing and operating mechanism for hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91212676 CN2091948U (en) | 1991-05-15 | 1991-05-15 | Oil-distributing and operating mechanism for hydraulic rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2091948U true CN2091948U (en) | 1992-01-01 |
Family
ID=4921172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91212676 Withdrawn CN2091948U (en) | 1991-05-15 | 1991-05-15 | Oil-distributing and operating mechanism for hydraulic rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2091948U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049947C (en) * | 1995-07-07 | 2000-03-01 | 中南工业大学 | Controlling system controlled by flow for hydraulic rock drill |
| CN1111249C (en) * | 1998-04-04 | 2003-06-11 | 臧得中 | Oil supply way for hydraulic support of hydraulic hammer drill and the structure for realizing said way |
| CN102889255A (en) * | 2011-07-22 | 2013-01-23 | 深圳市普隆重工有限公司 | Hydraulic gadder and oil distribution sliding valve thereof |
| CN102108834B (en) * | 2009-12-24 | 2015-01-21 | 深圳市普隆重工有限公司 | Rock drilling machine |
| CN105298968A (en) * | 2015-11-24 | 2016-02-03 | 岳文智 | Industrial hydraulic oil delivery device |
-
1991
- 1991-05-15 CN CN 91212676 patent/CN2091948U/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049947C (en) * | 1995-07-07 | 2000-03-01 | 中南工业大学 | Controlling system controlled by flow for hydraulic rock drill |
| CN1111249C (en) * | 1998-04-04 | 2003-06-11 | 臧得中 | Oil supply way for hydraulic support of hydraulic hammer drill and the structure for realizing said way |
| CN102108834B (en) * | 2009-12-24 | 2015-01-21 | 深圳市普隆重工有限公司 | Rock drilling machine |
| CN102889255A (en) * | 2011-07-22 | 2013-01-23 | 深圳市普隆重工有限公司 | Hydraulic gadder and oil distribution sliding valve thereof |
| CN102889255B (en) * | 2011-07-22 | 2015-05-20 | 深圳市普隆重工有限公司 | Hydraulic gadder and oil distribution sliding valve thereof |
| CN105298968A (en) * | 2015-11-24 | 2016-02-03 | 岳文智 | Industrial hydraulic oil delivery device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |