CN2340932Y - Grasping hydraulic part - Google Patents
Grasping hydraulic part Download PDFInfo
- Publication number
- CN2340932Y CN2340932Y CN 98216967 CN98216967U CN2340932Y CN 2340932 Y CN2340932 Y CN 2340932Y CN 98216967 CN98216967 CN 98216967 CN 98216967 U CN98216967 U CN 98216967U CN 2340932 Y CN2340932 Y CN 2340932Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- small piston
- piston assembly
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a grasping hydraulic part, and main components of the utility model comprises an oil storing machine, a small piston assembly, a big piston assembly, a valve body, a pressure releasing valve, a main handle, and an auxiliary handle. The oil storing machine is designed into a soft snake-shaped bag and is arranged in the main handle, which increases the radial deformation resistance ability of the oil storing machine and reduces the axial deformation force of the oil storing machine. Thus, a small piston chamber can not have too high negative pressure to cause the failure of hydraulic effect when the utility model works. The pressure releasing valve is sealed in a single direction by a steel ball to reach better pressure keeping effect. The utility model solves the problem of the miniaturization of a hydraulic driving system and can be used in various manual tools.
Description
The utility model relates to a kind of hydraulic parts, relates in particular to a kind of hydraulic mechanism that drives with palm power.
The product of existing employing hand-hydraulic drive system generally needs bimanualness or has the one hand of support to press operation, and its volume and weight are all bigger, have hindered the application of hydraulic driving system on some small instruments and tools.The oil basin of existing hand-hydraulic drive system is cylindric, during work, oil in the oil basin enters the small piston chamber, oil basin is big and inhomogeneous because of oil mass reduces the deformation power that causes, and then cause that the indoor negative pressure of small piston improves, air enters hydraulic system easily, and hydraulic operation is obstructed and lost efficacy.Particularly hydraulic driving system miniaturization, the oil mass of oil basin seldom, during work in the oil basin oil mass to reduce ratio very big.Can make this state more serious, also be a key factor that hinders hydraulic driving system.
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of volume little, in light weight, and the novel formula hydraulic parts of holding that can one-handed operation.
The purpose of this utility model is achieved in that analyzes existing hand-hydraulic drive system, and emphasis improves oil basin.Having designed a kind of is the formula of the holding hydraulic parts of main member with oil basin, small piston assembly, big piston assembly, valve body, pressure release valve, main handle, a pair handle.Oil basin is designed to flexible snakelike capsule, is arranged in the main handle, and main handle is screwed in the tail end of valve body, is provided with oil channel structures in the valve body, and oil basin connects the valve body oil circuit through low pressure valve; The big piston assembly connects the valve body oil circuit through high pressure valve; Valve body radially middle part is equipped with a small piston assembly and a pressure release valve.
Pressure release valve described in the utility model is taked the steel ball unidirectional blocking, is made up of valve body, valve rod, steel ball, spring etc., and stem shaft is provided with the guiding skewed slot, and stem lower portion is equipped with a seal ring, and valve rod is arranged in the valve body; Set screw passes valve body and enters the valve rod skewed slot; In valve body, also be provided with steel ball and Returnning spring.
Small piston assembly described in the utility model is made up of small piston rod, small piston seat, return spring etc., it is mainly transformed and is: at the small piston rod end copper washer, resilient pad, seal ring, resilient pad, copper washer, resilient pad, seal ring, resilient pad, copper washer are housed successively, reach sealing effect, feasible requirement on machining accuracy to valve seat orifice reduces.
Of the present utility modelly oil basin, pressure release valve, small piston assembly are carried out emphasis improve design, flexible snakelike cryptomere oil basin, increased the radially non-deformability of oil basin, reduced axial deformation power, thereby, even the interior oil mass minimizing of oil basin ratio is very big during work, the negative pressure too high hydraulic effect that causes in small piston chamber was lost efficacy; Pressure release valve is taked the steel ball unidirectional blocking, and steel ball is contacted well with valve seat, reaches to hold preferably to press effect (pressure 500Kg/CM
2Reach more than 48 hours), even low-pressure state is also very good, simultaneously, this is simple in structure, manufacturing procedure is few.The utility model is held the problem that the formula hydraulic parts has solved the hydraulic driving system miniaturization, can be widely used in various hand-operated tools, as holds formula hydraulic pressure bolt clipper, holds the formula hydraulic tongs, holds formula hydraulic work folder etc.
Reaching embodiment in conjunction with the accompanying drawings is further described the utility model:
Accompanying drawing 1, the utility model example structure schematic representation;
Accompanying drawing 2, the utility model embodiment A-A sectional drawing;
Accompanying drawing 3, the utility model embodiment pressure release valve outline drawing;
Accompanying drawing 4, the utility model embodiment pressure release valve structural representation;
Accompanying drawing 5, the utility model embodiment small piston valve arrangement schematic representation;
Accompanying drawing 6, hold formula hydraulic tongs structural representation;
Shown in accompanying drawing 1, accompanying drawing 2, the utility model is made up of oil basin (3), small piston assembly (2), big piston assembly (1), valve body (4), pressure release valve (5), main handle (6), pair handle (7) etc.Valve body is provided with oil channel structures in (4), and oil basin (3) is arranged in the main handle (6), and main handle (6) is screwed in the tail end of valve body (4), and oil basin (3) connects valve body (4) oil circuit through low pressure valve (8); Big piston assembly (1) connects valve body (4) oil circuit through high pressure valve (9); Valve body (4) radially middle part is equipped with a small piston assembly (2), and is positioned at pair handle (a 7) lower end; At valve body (4) pressure release valve (5) is housed also radially.
Oil basin (3) is designed to flexible snakelike capsule, adopts oil resistant rubber to make, and there is an oil hole (31) its rear end, and seals with closure ball (32).
Shown in accompanying drawing 3, accompanying drawing 4, pressure release valve (5) is made up of valve body (4), valve rod (51), steel ball (52), spring (53) etc., valve rod (51) is provided with guiding skewed slot (54), and a seal ring (55) is equipped with in valve rod (51) bottom, and valve rod (51) is arranged in the valve body (4); Set screw (56) passes valve body (4) and enters valve rod skewed slot (54); In valve body (4), also be provided with steel ball (52) and Returnning spring (53).
As shown in Figure 5, small piston assembly (2) is made up of small piston rod (21), small piston seat (22), return spring (23), spring housing (27) etc., multi-layer sealed filled type is taked in its sealing, at small piston rod (21) end copper washer (24), resilient pad (25), seal ring (26), resilient pad (25), copper washer (24), resilient pad (25) seal ring (26), resilient pad (25), copper washer (24) is housed successively.
During work, pressure release valve (5) is to working state, hold main handle (6) and pay handle (7), make its pressing, small piston rod (21) moves up and down in valve body (4), and small piston rod (21) returns in valve body (4) when upper, forms negative pressure in valve body (4) oil pocket, make low pressure valve (8) open, the oil in the oil basin (3) enters oil pocket; Small piston rod (21) moves down in valve body (4), makes high pressure valve (9) open, and high pressure oil promotes piston rod (11) reach of big piston assembly (1).
Work finishes, rotate (57) 180 ° of indicator boards on the pressure release valve (5) to the release of pressure state, valve rod (51) moves to steel ball (52) direction, overcome the power of the oil pressure and the Returnning spring (53) of big piston chamber, steel ball (52) is lifted off a seat, make oil by the gap inflow release of pressure valve rod chamber of big piston chamber oil duct (41), flow back to oil basin (3) by release of pressure valve rod chamber oil duct again along steel ball (52) and valve pocket.
For being used as, the utility model holds the formula hydraulic tongs as shown in Figure 7, at the preceding binding clip (12) that is equipped with of the piston rod (11) of big piston assembly (1).
Claims (3)
1, a kind of formula hydraulic parts of holding, comprise oil basin, small piston assembly, big piston assembly, valve body, pressure release valve, it is characterized in that: oil basin is designed to flexible snakelike capsule, be arranged in the main handle, be provided with oil channel structures in the valve body, main handle is screwed in the tail end of valve body, and oil basin connects the valve body oil circuit through low pressure valve; The big piston assembly connects the valve body oil circuit through high pressure valve; Valve body radially middle part is equipped with a small piston assembly and a pressure release valve.
2, the formula hydraulic parts of holding according to claim 1, it is characterized in that: described pressure release valve is taked the steel ball unidirectional blocking, is made up of valve body, valve rod, steel ball, spring etc., and stem shaft is provided with the guiding skewed slot, stem lower portion is equipped with a seal ring, and valve rod is arranged in the valve seat; Set screw passes valve body and enters the valve rod skewed slot.
3, the formula hydraulic parts of holding according to claim 1, it is characterized in that: described small piston assembly is made up of small piston rod, small piston seat, return spring etc., at the small piston rod end copper washer, resilient pad, seal ring, resilient pad, copper washer, resilient pad, seal ring, resilient pad, copper washer are housed successively, the small piston assembly is arranged on to be paid under the handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98216967 CN2340932Y (en) | 1998-07-07 | 1998-07-07 | Grasping hydraulic part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98216967 CN2340932Y (en) | 1998-07-07 | 1998-07-07 | Grasping hydraulic part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2340932Y true CN2340932Y (en) | 1999-09-29 |
Family
ID=33969728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98216967 Expired - Fee Related CN2340932Y (en) | 1998-07-07 | 1998-07-07 | Grasping hydraulic part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2340932Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269618A (en) * | 2016-03-30 | 2017-10-20 | 瑞福可制造有限公司 | Hydraulic tool |
-
1998
- 1998-07-07 CN CN 98216967 patent/CN2340932Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269618A (en) * | 2016-03-30 | 2017-10-20 | 瑞福可制造有限公司 | Hydraulic tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |