CN206144875U - Oil return valve limit structure of press hydraulic pump - Google Patents
Oil return valve limit structure of press hydraulic pump Download PDFInfo
- Publication number
- CN206144875U CN206144875U CN201621197546.1U CN201621197546U CN206144875U CN 206144875 U CN206144875 U CN 206144875U CN 201621197546 U CN201621197546 U CN 201621197546U CN 206144875 U CN206144875 U CN 206144875U
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- oil return
- return valve
- base
- screw rod
- hydraulic pump
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Abstract
The utility model provides an oil return valve limit structure of press hydraulic pump, includes pneumatic cylinder, base, air pump and the pump body, establishes oil return valve and oil outlet on the base, characteristics: add stop device on the base and near one side of oil return valve, stop device includes the stopper, the one end of stopper is on the base, the other end constructs for the free end, establish the opening in the middle of the tip of free end, the screw rod of oil return valve is visited in the base, serve near one of handle at the screw rod and still offer the spacing groove, the opening card is established at limiting groove, along with the screw in of screw rod or screw out and make the free end of stopper slide around the stroke within range of spacing groove, make screw rod displacement backward when the twist grip, support until the free end of stopper and lean on on the lateral wall of spacing groove one side and make the screw rod slide outside can't be again to the base. Realize quick adjustment through stop device help oil return valve, work efficiency is high, the screw rod of avoiding the oil return valve drops because of the excessive rotatory base of following at quick adjustment's in -process, ensures the security of hydraulic pump use.
Description
Technical field
This utility model belongs to press technical field, and in particular to a kind of spacing knot of oil return valve of forcing press hydraulic pump
Structure.
Background technology
Forcing press is a kind of universal machine, its range of application can be used for widely, aborning cutting off, punching, blanking,
The processing technique such as bending, riveted and shaping, can be used for the maintenance of metal and orthopedic in life.It is small-sized in a press
Hydraulic press is one of the most frequently used machine, and which is generally made up of parts such as hydraulic pump, frame and decompressors, wherein hydraulic pressure
Pump is to provide the vitals of power, and oil return valve is provided with hydraulic pump, when hydraulic oil backflow is controlled by oil return valve
Flow velocity, to reach the purpose of steady clamping workpiece；Meanwhile, the backflow of hydraulic oil can also be blocked when necessary by oil return valve,
The press mechanism of forcing press is made to be maintained at current state or continue to push.At present, the oil return valve for being used on hydraulic pump is generally
Common handle arrangement, the press mechanism of usual hydraulic pump need to open oil return valve when resetting, and make the hydraulic pressure in press mechanism
Oil is passed back in hydraulic pump, but in quick regulation oil return valve, the handle of oil return valve causes what screw rod came off because excessively rotating
Phenomenon happens occasionally, and not only have impact on the speed of oil return valve regulation, and causes hydraulic fluid leak, makes hydraulic pump there is safety hidden
Suffer from.
In view of above-mentioned prior art, it is necessary to which the structure of existing forcing press hydraulic pump is reasonably improved.For this purpose, this
Applicant has made actively and effectively to explore, and defines finally technical scheme described below.
The content of the invention
The purpose of this utility model is to provide a kind of oil return valve position limiting structure of forcing press hydraulic pump, is assisted in back
The quick regulation of fuel tap and use saving the operating time, improve work efficiency, be conducive to avoiding oil return valve in the mistake of quick regulation
Valve rod is caused to come off from base because excessively rotating in journey, so as to effectively prevent the leakage of hydraulic oil, it is ensured that what hydraulic pump was used
Safety.
The purpose of this utility model is such to what is reached, a kind of oil return valve position limiting structure of forcing press hydraulic pump, including
Hydraulic cylinder, base, air pump and the pump housing, described hydraulic cylinder are welded on the top in substructure height direction, described air pump and the pump housing
Be provided with oil return valve and oil outlet on the lower section in substructure height direction, described base, described oil return valve with it is fuel-displaced
Hole coordinates installs, it is characterised in that：A stopping means are had additional on described base and close to the side of oil return valve, it is described
Stopping means include a limited block, one end of the limited block is rotatably mounted on base, the other end is configured to free end, and
Offer an opening in the middle of the end of the free end along its length, described oil return valve includes handle and screw rod, described
Screw rod probes in base and by ball valve to control the oil return speed of oil outlet, and described oil return valve is in screw rod near the one of handle
A stopper slot is further opened with end, described opening is fastened in stopper slot in the form of semi-surrounding, meanwhile, with the rotation of screw rod
Enter or screw out and sliding before and after making the free end of the limited block in the stroke range of stopper slot, when rotary handle make screw rod to
Afterwards after displacement certain distance, the free end of the limited block is resisted against on the side wall of stopper slot side and makes the screw rod cannot again the bottom of to
The outer sliding of seat.
In a specific embodiment of the present utility model, the width of described opening is less than the diameter of the screw rod.
In another specific embodiment of the present utility model, the width of described opening is more than or equal to the stopper slot
Diameter.
In another specific embodiment of the present utility model, one end of described limited block passes through securing member rotatably
It is installed on base, described securing member is damping screw.
This utility model is due to after using said structure, having the advantage that：First, it is additionally arranged by oil return valve spacing
Device, it is thus possible to help oil return valve to realize quick regulation by stopping means, improve work efficiency to reduce the operating time,
Save labor cost；Secondly as stopper slot is offered on oil return valve, by matching somebody with somebody for stopper slot and limited block free end
Close, be conducive to avoiding the screw rod of oil return valve from coming off from base because excessively rotating during quick regulation, it is therefore prevented that liquid
The leakage of force feed, it is ensured that the safety that hydraulic pump is used.
Description of the drawings
Fig. 1 is embodiment three-dimensional structure diagram of the present utility model.
In figure：1. hydraulic cylinder；2 bases, 21. oil return valves, 211. handles, 212. screw rods, 213. stopper slots, 22. oil outlets,
23. limited blocks, 231. securing members, 232. openings；3. air pump；4. the pump housing.
Specific embodiment
Applicant is elaborated below by way of example, but the description to embodiment is not to this reality
It is with the restriction of new technique scheme, any according to only pro forma rather than substantial done by this utility model design
Equivalent transformation is regarded as the technical solution of the utility model category.
In the following description it is every be related to upper and lower, left and right, the directivity of front and rear or claim directionality concept be all
On the basis of the position shown in Fig. 1, thus the special limit of the technical scheme that can not be understood as providing this utility model
It is fixed.
Refer to Fig. 1, this utility model is related to a kind of oil return valve position limiting structure of forcing press hydraulic pump, including hydraulic cylinder 1,
Base 2, air pump 3 and the pump housing 4, described hydraulic cylinder 1 are welded on the top of 2 short transverse of base, described air pump 3 and the pump housing 4
Oil return valve 21 and oil outlet 22, described oil return valve are provided with the lower section of 2 short transverse of base, described base 2
21 coordinate installation with oil outlet 22.Feature is：On described base 2 and close to the side of oil return valve 21, to have additional one spacing
Device, described stopping means include a limited block 23, and one end of the limited block 23 is rotatably mounted to bottom by securing member 231
Seat 2 on, the other end be configured to free end, and offer an opening 232 in the middle of the end of the free end along its length, it is described
Oil return valve 21 include handle 211 and screw rod 212, described screw rod 212 probes in base 2 and by ball valve to control oil outlet
22 oil return speed, described oil return valve 21 are further opened with a stopper slot 213, institute on one end of handle 211 in screw rod 212
The opening 232 stated is fastened in stopper slot 213 in the form of semi-surrounding, meanwhile, institute is made with being threaded in or out for screw rod 212
Sliding before and after the free end of limited block 23 is stated in the stroke range of stopper slot 213, when rotary handle 211 makes screw rod 212 backward
After displacement certain distance, the free end of the limited block 23 is resisted against on the side wall on front side of stopper slot 213 and makes the screw rod 212 cannot
Again to 2 outer sliding of base, so as to effectively prevent the screw rod 212 of oil return valve 21 during quick regulation because of excessive rotation
Come off from described base 2, it is therefore prevented that the leakage of hydraulic oil, it is ensured that the safety that hydraulic pump is used.
Further, diameter of the width of described opening 232 less than the screw rod 212；The width of described opening 232
More than or equal to the diameter of the stopper slot 213.
Further, described securing member 231 is damping screw, and damping screw is being fixed installation to limited block 23
Rotation again to limited block 23 simultaneously serves damping action.
Please continue to refer to Fig. 1, when 212 rearward displacement of screw rod for needing oil return valve 21 makes oil outlet 22 open oil return action
When, palpus counterclockwise rotates handle 211 makes screw rod 212 screw out back towards the direction away from base 2, and makes described limit
The free end of position block 23 controls the pressure of oil return valve 21 as needed to adjust oil return in the range of 213 stroke of stopper slot
Speed, until when the free end of the limited block 23 is abutted on the side wall on front side of stopper slot 213, described oil outlet 22 is in
Fully opened, oil return speed reaches maximum, if continue the firmly handle 211 of rotation oil return valve 21 in this case
May result in the damage of limited block 23；Stop oil return when needing 21 anterior displacement of oil return valve oil outlet 22 is gradually closed
When, must turn clockwise handle 211, screw rod 212 is screwed in base 2 forward, until one end ball valve of the screw rod 212 is complete
Till oil outlet 22 is blocked.During aforesaid operations, due to setting up for stopping means, oil return valve 21 can be effectively helped to realize
Quickly adjust, not only simple to operation, work efficiency is greatly improved, and can prevent oil return valve 21 in quick regulation
During screw rod 212 come off from base 2, improve the safety that hydraulic pump is used.
Claims (4)
1. a kind of oil return valve position limiting structure of forcing press hydraulic pump, including hydraulic cylinder (1), base (2), air pump (3) and the pump housing
(4), described hydraulic cylinder (1) is welded on the top of base (2) short transverse, and described air pump (3) and the pump housing (4) are the bottom of installed in
The lower section of seat (2) short transverse, is provided with oil return valve (21) and oil outlet (22), described oil return valve on described base (2)
(21) coordinate with oil outlet (22) and install, it is characterised in that：On described base (2) and close to the side of oil return valve (21)
A stopping means are had additional, described stopping means include a limited block (23), and one end of the limited block (23) is rotatably installed
On base (2), the other end is configured to free end, and offers an opening along its length in the middle of the end of the free end
(232), described oil return valve (21) includes handle (211) and screw rod (212), and described screw rod (212) is probeed in base (2) simultaneously
The oil return speed of oil outlet (22) is controlled by ball valve, described oil return valve (21) is in the close handle (211) of screw rod (212)
A stopper slot (213) is further opened with one end, described opening (232) is fastened in stopper slot (213) in the form of semi-surrounding,
Meanwhile, the free end of the limited block (23) is made in the stroke model of stopper slot (213) with being threaded in or out for screw rod (212)
Sliding before and after in enclosing, after rotary handle (211) makes screw rod (212) rearward displacement certain distance, the limited block (23) from
It is resisted against on the side wall of stopper slot (213) side from end and makes the screw rod (212) cannot again to the outer sliding of base (2).
2. the oil return valve position limiting structure of a kind of forcing press hydraulic pump according to claim 1, it is characterised in that described opens
Diameter of the width of mouth (232) less than the screw rod (212).
3. the oil return valve position limiting structure of a kind of forcing press hydraulic pump according to claim 1, it is characterised in that described opens
Diameter of the width of mouth (232) more than or equal to the stopper slot (213).
4. a kind of oil return valve position limiting structure of forcing press hydraulic pump according to claim 1, it is characterised in that described limit
One end of position block (23) is rotatably mounted on base (2) by securing member (231), and described securing member (231) is damping spiral shell
Nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197546.1U CN206144875U (en) | 2016-11-07 | 2016-11-07 | Oil return valve limit structure of press hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621197546.1U CN206144875U (en) | 2016-11-07 | 2016-11-07 | Oil return valve limit structure of press hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206144875U true CN206144875U (en) | 2017-05-03 |
Family
ID=58625922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621197546.1U Active CN206144875U (en) | 2016-11-07 | 2016-11-07 | Oil return valve limit structure of press hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206144875U (en) |
-
2016
- 2016-11-07 CN CN201621197546.1U patent/CN206144875U/en active Active
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| GR01 | Patent grant |