CN203343247U - Hydraulic pinching pliers - Google Patents
Hydraulic pinching pliers Download PDFInfo
- Publication number
- CN203343247U CN203343247U CN 201320369167 CN201320369167U CN203343247U CN 203343247 U CN203343247 U CN 203343247U CN 201320369167 CN201320369167 CN 201320369167 CN 201320369167 U CN201320369167 U CN 201320369167U CN 203343247 U CN203343247 U CN 203343247U
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- CN
- China
- Prior art keywords
- plunger
- piston
- caliper
- barrel
- leading screw
- 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 - Lifetime
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Abstract
The utility model discloses a pair of hydraulic pinching pliers. The hydraulic pinching pliers are used for preventing a cylindrical pin in a narrow and small space from falling off. The hydraulic pinching pliers comprise a pliers body, a pressure head, a piston, a plunger barrel, a plunger, a plunger screw rod and a handle. The piston is assembled in an inner cavity of the pliers body. The pressure head is mounted at the front end of the piston. The plunger barrel and the rear end of the pliers body are assembled. An inner cavity of the plunger barrel is communicated with the inner cavity of the pliers body. The plunger is assembled in the inner cavity of the plunger barrel. A cavity between the piston and the plunger is filled with hydraulic oil. The rear end of the plunger and the front end of the plunger screw rod are assembled. The handle is arranged at the rear end of the plunger screw rod. By means of the hydraulic pinching pliers, not only can the pinching operation at the two ends of the cylindrical pin be completed in the narrow and small space, but also the pinching force can be adjusted according to the difference in material hardness of the cylindrical pin so as to meet operation requirements of different workpieces.
Description
Technical field
The utility model relates to a kind of hydraulic tool, and the especially a kind of hydraulic clip gripping tongs that can process being arranged in small space straight pin two ends slip-off preventing belong to the clamping device technical field of working pressure.
Background technology
It is one of common plant equipment shaft element connecting mode that pin connects, for preventing that the straight pin after assembling from coming off, the straight pin two ends need be pressed from both sides to flat processing, mostly adopt at present common hydraulic tongs or manually clamp the two ends of straight pin folder flat, but for the straight pin be arranged in small space, due to common hydraulic tongs or manually to clamp required operating space larger, roomy jaw is difficult to enter narrow and small working position, and although mechanical type nipper plier jaw can overcome the problem that jaw is roomy, but its clamping force only depends on operator's the power of holding, because nipper pressure is inadequate, can't complete the pin two ends and press from both sides flat operation.
The utility model content
The purpose of this utility model is the drawback for prior art, provides a kind of and can adjust the flat power of folder according to straight pin material hardness difference, straight pin two ends in small space can be pressed from both sides to flat hydraulic clip gripping tongs.
Problem described in the utility model realizes with following technical proposals:
A kind of hydraulic clip gripping tongs, it comprises caliper, pressure head, piston, plunger barrel, plunger, plunger leading screw and handle, described Piston assembling is in the caliper inner chamber, front end at piston is installed pressure head, and described plunger barrel and caliper rear end are equipped, and plunger barrel inner chamber and caliper inner chamber are communicating structure, assemble plunger in the plunger barrel inner chamber, filling liquid force feed in cavity between piston and plunger, described plunger back-end and plunger leading screw front end are equipped, and described plunger leading screw rear end arranges handle.
Above-mentioned hydraulic clip gripping tongs, described caliper inner chamber front end is provided with regular jaw, and the caliper internal thread mated with plunger barrel is set in its back-end, is provided with the safety valve pilot hole on the caliper outer wall.
Above-mentioned hydraulic clip gripping tongs, described pressure head is provided with guide pad and moving jaw, and described guide pad is arranged on the rear end of pressure head, and described moving jaw is positioned at the pressure head front end.
Above-mentioned hydraulic clip gripping tongs, arrange at least twice piston seal groove on described outside piston cylinder, in the piston seal groove, piston packing is installed.
Above-mentioned hydraulic clip gripping tongs, described plunger barrel front end is provided with the plunger barrel external screw thread with the caliper coupling, at plunger barrel and caliper cooperation place, the plunger barrel seal groove is set, in described plunger barrel seal groove, seal washer is installed, the plunger barrel internal thread mated with the plunger leading screw is set at the plunger barrel intracavity posterior end.
Above-mentioned hydraulic clip gripping tongs, the anterior external cylindrical surface of described plunger is provided with at least twice plunger seal groove, and erection column plug sealing ring in the plunger seal groove, arrange plunger steel ball fitting recess at plunger back-end.
Above-mentioned hydraulic clip gripping tongs, the rear end of described plunger leading screw arranges the handle mount pad, plunger leading screw front end is provided with the plunger pilot hole, plunger leading screw steel ball fitting recess is set on plunger pilot hole inwall, described plunger leading screw steel ball fitting recess coordinates formation steel ball rolling chamber with plunger steel ball fitting recess, one group of steel ball is set in steel ball rolling chamber.
The utility model is by rotatable handle plunger leading screw, the spinning movement of handle is converted to the screwfeed campaign of plunger leading screw, and utilize the steel ball in the steel ball rolling chamber be arranged in plunger leading screw steel ball fitting recess and the formation of plunger steel ball fitting recess, to after the external force amplification be applied on handle, pass to plunger, be enclosed in pincers and the plunger barrel inner chamber in hydraulic oil liquid be under pressure after, promoting piston and pressure head moves forward, make the moving jaw of pressure head press to the regular jaw of caliper front end, thereby press from both sides the end of oblate pin.The utility model is at caliper top mounting safety valve, and when hydraulic oil liquid pressure reaches the restriction force value, safety valve can, by the size that the method for oil spilling is regulated pressure outward, be avoided, because pressure is excessive, jaw and workpiece are caused to damage.In a word, the utility model can not only complete straight pin two ends in small space and press from both sides flat operation, but also can adjust the flat power of folder according to straight pin material hardness difference, meets the job requirements to different workpieces.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is cross-sectional view of the present utility model;
Fig. 2 is that the A of Fig. 1 is to partial view;
Fig. 3 is the blast structure chart of Fig. 1;
Fig. 4 is the caliper cross-sectional view;
Fig. 5 is A-A cross-sectional view in Fig. 4;
Fig. 6 is the front view of pressure head and piston;
Fig. 7 is the top view of pressure head and piston;
Fig. 8 is plunger barrel and plunger barrel ring structure schematic diagram;
Fig. 9 is the piston structure schematic diagram;
Figure 10 is plunger screw structure schematic diagram.
In figure, each list of reference numerals is: 1, straight pin, 2, caliper, 2-1, regular jaw, 2-2, the safety valve pilot hole, 2-3, the caliper internal thread, 3, pressure head, 3-1, guide pad, 3-2, moving jaw, 4, piston, 4-1, the piston seal groove, 5, piston packing, 6, safety valve, 7, seal washer, 8, plunger barrel, 8-1, the plunger barrel external screw thread, 8-2, the plunger barrel inner chamber, 8-3, the plunger barrel internal thread, 8-4, the plunger barrel seal groove, 9, plunger sealing washer, 10, plunger, 10-1, the plunger seal groove, 10-2, plunger steel ball fitting recess, 11, steel ball, 12, the plunger leading screw, 12-1, the plunger pilot hole, 12-2, plunger leading screw steel ball fitting recess, 12-3, the handle mount pad, 13, handle.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, the utility model comprises caliper 2, pressure head 3, piston 4, plunger barrel 8, plunger 10, plunger leading screw 12 and handle 13, described piston 4 is assemblied in caliper 2 inner chambers, front end at piston 4 is installed pressure head 3, described plunger barrel 8 is equipped with caliper 2 rear ends, plunger barrel 8 inner chambers and caliper 2 inner chambers are communicating structure, assembling plunger 10 in plunger barrel 8 inner chambers, filling liquid force feed in cavity between piston 4 and plunger 10, described plunger 10 rear ends and plunger leading screw 12 front ends are equipped, and described plunger leading screw 12 rear ends arrange handle 13.
Referring to Fig. 4, Fig. 5, caliper 2 inner chamber front ends of the present utility model are provided with regular jaw 2-1, and the caliper internal thread 2-3 mated with plunger barrel is set in its back-end, are provided with safety valve pilot hole 2-2 on the caliper outer wall.
Referring to Fig. 6, Fig. 7, pressure head 3 of the present utility model is provided with guide pad 3-1 and moving jaw 3-2, and described guide pad 3-1 is arranged on the rear end of pressure head 3, and described moving jaw 3-2 is positioned at pressure head 3 front ends; At least twice piston seal groove 4-1 is set on described piston 4 external cylindrical surfaces, piston packing 5 is installed in piston seal groove 4-1.
Referring to Fig. 8, plunger barrel 8 front ends of the present utility model are provided with the plunger barrel external screw thread 8-1 with caliper 2 couplings, at plunger barrel and caliper cooperation place, plunger barrel seal groove 8-4 is set, seal washer 7 is installed in described plunger barrel seal groove 8-4, the plunger barrel internal thread 8-3 with plunger leading screw coupling is set in plunger barrel inner chamber 8-2 rear end.
Referring to Fig. 9, the anterior external cylindrical surface of plunger 10 of the present utility model is provided with at least twice plunger seal groove 10-1, and erection column plug sealing ring 9 in plunger seal groove 10-1 arranges plunger steel ball fitting recess 10-2 in plunger 10 rear ends.
Referring to Figure 10, the rear end of plunger leading screw 12 of the present utility model arranges handle mount pad 12-3, plunger leading screw 12 front ends are provided with plunger pilot hole 12-1, plunger leading screw steel ball fitting recess 12-2 is set on plunger pilot hole 12-1 inwall, described plunger leading screw steel ball fitting recess 12-2 coordinates formation steel ball rolling chamber with plunger steel ball fitting recess 10-2, one group of steel ball 11 is set in steel ball rolling chamber.
The utility model is by handle 13 rotary plunger leading screws 12, the spinning movement of handle 13 is converted to the screwfeed campaign of plunger leading screw 12, and utilize the steel ball 11 in the steel ball rolling chamber be arranged in plunger leading screw steel ball fitting recess 12-2 and plunger steel ball fitting recess 10-2 formation, to after the external force amplification be applied on handle, pass to plunger 10, after being enclosed in hydraulic oil liquid in caliper 2 and plunger barrel 8 inner chambers and being under pressure, promoting piston 4 and pressure head 3 moves forward, make the moving jaw 3-2 of pressure head 3 press to the regular jaw 2-1 of caliper 2 front ends, thereby press from both sides the end of oblate pin 1.The utility model is at caliper 2 top mounting safety valves 6, and when hydraulic oil liquid pressure reaches the restriction force value, safety valve 6 can, by the size that the method for oil spilling is regulated pressure outward, be avoided, because pressure is excessive, jaw and workpiece are caused to damage.
Claims (7)
1. a hydraulic clip gripping tongs, it is characterized in that, it comprises caliper (2), pressure head (3), piston (4), plunger barrel (8), plunger (10), plunger leading screw (12) and handle (13), described piston (4) is assemblied in caliper (2) inner chamber, front end at piston (4) is installed pressure head (3), described plunger barrel (8) is equipped with caliper (2) rear end, plunger barrel (8) inner chamber and caliper (2) inner chamber are communicating structure, assemble plunger (10) in plunger barrel (8) inner chamber, filling liquid force feed in cavity between piston (4) and plunger (10), described plunger (10) rear end and plunger leading screw (12) front end are equipped, described plunger leading screw (12) rear end arranges handle (13).
2. a kind of hydraulic clip gripping tongs according to claim 1, it is characterized in that, described caliper (2) inner chamber front end is provided with regular jaw (2-1), and the caliper internal thread (2-3) mated with plunger barrel is set in its back-end, is provided with safety valve pilot hole (2-2) on the caliper outer wall.
3. a kind of hydraulic clip gripping tongs according to claim 1, it is characterized in that, described pressure head (3) is provided with guide pad (3-1) and moving jaw (3-2), and described guide pad (3-1) is arranged on the rear end of pressure head (3), and described moving jaw (3-2) is positioned at pressure head (3) front end.
4. a kind of hydraulic clip gripping tongs according to claim 1, is characterized in that, at least twice piston seal groove (4-1) is set on described piston (4) external cylindrical surface, and piston packing (5) is installed in piston seal groove (4-1).
5. a kind of hydraulic clip gripping tongs according to claim 1, it is characterized in that, described plunger barrel (8) front end is provided with the plunger barrel external screw thread (8-1) with caliper (2) coupling, at plunger barrel and caliper cooperation place, plunger barrel seal groove (8-4) is set, seal washer (7) is installed in described plunger barrel seal groove (8-4), the plunger barrel internal thread (8-3) with plunger leading screw coupling is set in plunger barrel inner chamber (8-2) rear end.
6. a kind of hydraulic clip gripping tongs according to claim 1, it is characterized in that, the anterior external cylindrical surface of described plunger (10) is provided with at least twice plunger seal groove (10-1), erection column plug sealing ring (9) in plunger seal groove (10-1), arrange plunger steel ball fitting recess (10-2) in plunger (10) rear end.
7. according to the described a kind of hydraulic clip gripping tongs of claim 1 or 6, it is characterized in that, the rear end of described plunger leading screw (12) arranges handle mount pad (12-3), plunger leading screw (12) front end is provided with plunger pilot hole (12-1), on plunger pilot hole (12-1) inwall, plunger leading screw steel ball fitting recess (12-2) is set, described plunger leading screw steel ball fitting recess (12-2) coordinates formation steel ball rolling chamber with plunger steel ball fitting recess (10-2), one group of steel ball (11) is set in steel ball rolling chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320369167 CN203343247U (en) | 2013-06-26 | 2013-06-26 | Hydraulic pinching pliers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320369167 CN203343247U (en) | 2013-06-26 | 2013-06-26 | Hydraulic pinching pliers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203343247U true CN203343247U (en) | 2013-12-18 |
Family
ID=49743181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320369167 Expired - Lifetime CN203343247U (en) | 2013-06-26 | 2013-06-26 | Hydraulic pinching pliers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203343247U (en) |
-
2013
- 2013-06-26 CN CN 201320369167 patent/CN203343247U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131218 |