CN201222596Y - Oil return mechanism for single hand connector crimping tool - Google Patents
Oil return mechanism for single hand connector crimping tool Download PDFInfo
- Publication number
- CN201222596Y CN201222596Y CNU2008200870391U CN200820087039U CN201222596Y CN 201222596 Y CN201222596 Y CN 201222596Y CN U2008200870391 U CNU2008200870391 U CN U2008200870391U CN 200820087039 U CN200820087039 U CN 200820087039U CN 201222596 Y CN201222596 Y CN 201222596Y
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- China
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- oil
- oil return
- return mechanism
- cylinder
- load valve
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Abstract
The utility model provides an oil return mechanism of single-hand cold welding pliers, which belongs to the machinery technical field. The oil return mechanism solves the problems that the oil return mechanism of existing single-hand cold welding pliers has complicated operations, low working efficiency, bad sealing performance and the like. An oil cylinder and an oil storage cylinder are arranged in a pliers body of the single-hand cold welding pliers, an oil return channel with an oil inlet cavity and an oil outlet cavity is arranged between the oil cylinder and the oil storage cylinder, wherein the oil inlet cavity is communicated with the oil cylinder, the oil outlet cavity is communicated with the oil storage cylinder, the oil return mechanism of the single-hand cold welding pliers comprises an unloading valve rod, a spring and a sealing part, wherein the oil return channel is provided with a sealing surface inside, the sealing part is located in the oil inlet cavity and can be contacted with the sealing surface to form sealing, two ends of the spring is respectively acted on the sealing part and the pliers body, the inner end of the unloading valve rod is located in the oil return channel and can be contacted with the sealing part, and the outer end is extended out from the oil return channel. The oil return mechanism of the single-hand cold welding pliers is characterized in that the structure is simple, the maintenance is convenient, the operation is simple, and the working efficiency is high.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of Press Plier, particularly a kind of oil return mechanism of singlehanded Press Plier.
Background technology
Singlehanded Press Plier is widely used in electric power system, by it with lead and lead or lead and binding post crimping moulding.
The head of singlehanded Press Plier is provided with two pressure heads, realizes by these two pressure heads in the crimping process.The pressure head in left side maintains static, and the pressure head on right side is movable and be connected with hydraulic system.Hydraulic system comprises a hydraulic cavities, is positioned at the piston of hydraulic cavities, a shoe cream room.Hydraulic cavities is communicated with by fuel feed hole with shoe cream room, and fuel feed hole is provided with and makes hydraulic oil can only enter the unidirectional valve of hydraulic cavities from shoe cream room.Piston in the pressure head on right side and the hydraulic cavities is connected, and is inserted with one on the fuel feed hole with its sliding pin of blocking, and sliding pin is connected with handle.
The pulling handle is extracted sliding pin in fuel feed hole, the oil in the shoe cream room just enters from fuel feed hole and promotes the piston slip in the hydraulic cavities, that is to say that the pressure head on right side moves, thereby with lead and lead or lead and binding post crimping moulding.
In order to be repeatedly used singlehanded Press Plier for a long time, an oil return mechanism to be set in singlehanded Press Plier just can to achieve the above object.That is to say, when hydraulic cavities is held full oil after hours, make the oil in the hydraulic cavities flow back into shoe cream room again, thereby the oil in the singlehanded Press Plier can repeatedly be recycled by oil return mechanism.
Existing singlehanded Press Plier oil return mechanism in caliper hydraulic cavities and shoe cream room between be provided with drainback passage, in drainback passage, be provided with and the drainback passage sealing can be stopped up the seal and the bolt that links to each other with seal of living, seal is moved with overregulating bolt at drainback passage, thereby hydraulic cavities and shoe cream room are communicated or block.Though can make the oil in the hydraulic cavities flow back into shoe cream room again like this, but in operating process, need to regulate bolt, operating personnel just have to vacate an other hand and regulate bolt, inconvenient operation so not only, increased workload, reduced operating efficiency, and sealing effectiveness is also bad, oil is revealed away easily.
Summary of the invention
The purpose of this utility model is to exist above-mentioned problem at existing singlehanded Press Plier, and a kind of oil return mechanism of singlehanded Press Plier of simple in structure, easy to maintenance, simple to operate, high efficiency is provided.
The purpose of this utility model can realize by following technical proposal: a kind of oil return mechanism of singlehanded Press Plier, be provided with oil cylinder and oil storage cylinder in the caliper of this one hand Press Plier, be provided with the drainback passage that has oil suction chamber and go out oil pocket between oil cylinder and the oil storage cylinder, oil suction chamber communicates with oil cylinder, going out oil pocket communicates with oil storage cylinder, it is characterized in that, this oil return mechanism comprises the off-load valve rod, spring and seal, in drainback passage, be provided with sealing surface, described seal is positioned at oil suction chamber and can contacts and form sealing with sealing, the two ends of spring act on respectively on seal and the caliper, described off-load valve rod the inner is positioned at drainback passage and can contacts with seal, and drainback passage is stretched out in the outer end.
This singlehanded Press Plier is after work is finished, oil cylinder in the caliper holds has expired fluid, this moment, unloading mechanism was in initial condition, seal contacts and forms sealing with sealing surface under the elastic force effect of spring, blocked the drainback passage between oil storage cylinder and the oil cylinder, that is to say oil suction chamber and go out oil pocket and be not communicated with, thereby oil storage cylinder can't be communicated with oil cylinder.The off-load valve rod can make the disengagement of seal member sealing surface by the roof pressure seal when promoting off-load valve rod outer end, thereby oil storage cylinder is communicated with oil cylinder, make in-oil cylinder fluid from oil cylinder successively by oil suction chamber, go out oil pocket and turn back to oil storage cylinder.After unclamping the off-load valve rod, the off-load valve rod is got back to original position, and the spring squeeze sealing member makes seal contact and form sealing again with sealing surface simultaneously.
In the oil return mechanism of above-mentioned singlehanded Press Plier, described oil return mechanism also comprises the off-load valve handle that is located on the caliper, and above-mentioned off-load valve rod the inner is positioned at oil pocket, and the outer end links to each other with the off-load valve handle.Can drive off-load valve rod round moving in drainback passage by pulling the off-load valve handle, make seal and sealing surface be in the state that sealing contacts or disengagement separates.
In the oil return mechanism of above-mentioned singlehanded Press Plier, have the through hole that communicates with drainback passage on the described caliper, be provided with the plug that matches with through hole in the through hole, the other end of above-mentioned spring links to each other with plug.Plug is blocked in the through hole and not only drainback passage is isolated from the outside, and fluid can not revealed away, after simultaneously plug being disassembled, can also clean the greasy dirt in the drainback passage, guarantees the unimpeded of drainback passage.
In the oil return mechanism of above-mentioned singlehanded Press Plier, described spring is located in the oil suction chamber.
In the oil return mechanism of above-mentioned singlehanded Press Plier, described off-load valve handle is hinged on the caliper.
Compared with prior art, the oil return mechanism of this singlehanded Press Plier makes the disengagement of seal member sealing surface by pulling off-load valve handle drive off-load valve handle roof pressure seal, fluid is flow back in the oil storage cylinder in oil cylinder, after unclamping the off-load valve handle, the off-load valve rod is got back to original position, and the spring squeeze sealing member makes seal contact and form sealing again with sealing surface simultaneously.Whole operation process operation personnel only just can finish with a hand, and are so not only simple to operate, alleviated workload, but also improved operating efficiency.
The while plug is blocked in the through hole and not only drainback passage is isolated from the outside, and fluid can not revealed away, plays sealing function.After plug disassembled, can also clean the greasy dirt in the drainback passage, guarantee the unimpeded of drainback passage.Maintenance is also convenient like this.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of this singlehanded Press Plier.
Fig. 2 is the sectional structure schematic diagram of this singlehanded Press Plier oil return mechanism.
Among the figure, caliper 1, lever 11, clamp holder 12, oil cylinder 2, piston 21, oil storage cylinder 3, oil suction chamber 4, go out oil pocket 5, off-load valve handle 6, seal 7, spring 8, plug 9, sealing surface 10, off-load valve rod 13.
Embodiment
Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As depicted in figs. 1 and 2, be provided with oil cylinder 2 and oil storage cylinder 3 in the caliper 1 of this singlehanded Press Plier, be provided with the drainback passage that has oil suction chamber 4 and go out oil pocket 5 between oil cylinder 2 and the oil storage cylinder 3, oil suction chamber 4 communicates with oil cylinder 2, goes out oil pocket 5 and communicates with oil storage cylinder 3.
This oil return mechanism comprises off-load valve rod 13, spring 8, off-load valve handle 6 and seal 7, and wherein off-load valve handle 6 is hinged on the caliper 1, and off-load valve rod 13 the inners are positioned at oil pocket 5 and contact with seal 7.Be provided with sealing surface 10 in drainback passage, sealing surface 10 is at oil suction chamber 4 and go out between the oil pocket 5, and seal 7 is positioned at oil suction chamber 4 and can contacts and form sealing with sealing surface 10.On caliper 1, have the through hole that communicates with drainback passage, be provided with the plug 9 that matches with through hole in the through hole.Spring 8 is arranged in the oil suction chamber 4 and the two ends of spring 8 act on respectively on seal 7 and the plug 9.Be provided with seal cover in the port that goes out oil pocket 5, the outer end of off-load valve rod 13 penetrates and links to each other with off-load valve handle 6 after seal cover stretches out drainback passage.
In the whole operation process, operating personnel's one hand is held lever 11 and clamp holder 12, by the grip pressure clamp holder 12 that does not stop, fluid in the oil storage cylinder 3 is extruded in the oil cylinder 2, the piston 21 that promotes in the oil cylinder 2 by fluid slides again, that is to say that pressure head moves, thereby with lead and conductor compression jointing moulding.Seal 7 contact and formed sealing with sealing surface 10 under the elastic force effect of spring 8 this moment, made oil suction chamber 4 and went out oil pocket 5 and be in blocking state, that is to say that oil storage cylinder 3 and oil cylinder 2 are not communicated with, and it is interior and time less than in the oil storage cylinder 3 that fluid is rested on oil cylinder 2.After lead and conductor compression jointing moulding, pull off-load valve handle 6 by finger, off-load valve rod 13 drives roof pressure seal 7 at off-load valve handle 6 makes seal 7 break away from sealing surface 10, oil suction chamber 4 and go out oil pocket 5 and be in connected state, that is to say that oil storage cylinder 3 and oil cylinder 2 are communicated with, this moment fluid under the promotion of piston 21 in the oil cylinder 2 successively by oil suction chamber 4, go out oil pocket 5 and flow back in the oil storage cylinder 3, thereby fluid is come back in the oil storage cylinder 3.After unclamping off-load valve handle 6, off-load valve rod 13 is got back to original position, seal 7 contacts and forms sealing with sealing surface 10 again under the elastic force effect of spring 8, oil storage cylinder 3 and oil cylinder 2 are not communicated with once more, and fluid just can not flow in the oil cylinder 2 by drainback passage from oil storage cylinder 3 like this.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used caliper 1, lever 11, clamp holder 12, oil cylinder 2, piston 21, oil storage cylinder 3, oil suction chamber 4, gone out terms such as oil pocket 5, off-load valve handle 6, seal 7, spring 8, plug 9, sealing surface 10, off-load valve rod 13 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (4)
1, a kind of oil return mechanism of singlehanded Press Plier, be provided with oil cylinder (2) and oil storage cylinder (3) in the caliper of this one hand Press Plier (1), be provided with between oil cylinder (2) and the oil storage cylinder (3) and have oil suction chamber (4) and go out the drainback passage of oil pocket (5), oil suction chamber (4) communicates with oil cylinder (2), going out oil pocket (5) communicates with oil storage cylinder (3), it is characterized in that, this oil return mechanism comprises off-load valve rod (13), spring (8) and seal (7), in drainback passage, be provided with sealing surface (10), described seal (7) is positioned at oil suction chamber (4) and can contacts and form sealing with sealing surface (10), the two ends of spring (8) act on respectively on seal (7) and the caliper (1), described off-load valve rod (13) the inner is positioned at drainback passage and can contacts with seal (7), and drainback passage is stretched out in the outer end.
2, the oil return mechanism of singlehanded Press Plier according to claim 1, it is characterized in that, described oil return mechanism also comprises the off-load valve handle (6) that is located on the caliper (1), and above-mentioned off-load valve rod (13) the inner is positioned at oil pocket (5), and the outer end links to each other with off-load valve handle (6).
3, the oil return mechanism of singlehanded Press Plier according to claim 1 and 2, it is characterized in that, described caliper has the through hole that communicates with drainback passage on (1), is provided with the plug (9) that matches with through hole in the through hole, and the other end of above-mentioned spring (8) links to each other with plug (9).
4, the oil return mechanism of singlehanded Press Plier according to claim 1 and 2 is characterized in that, described spring (8) is located in the oil suction chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200870391U CN201222596Y (en) | 2008-05-08 | 2008-05-08 | Oil return mechanism for single hand connector crimping tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200870391U CN201222596Y (en) | 2008-05-08 | 2008-05-08 | Oil return mechanism for single hand connector crimping tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201222596Y true CN201222596Y (en) | 2009-04-15 |
Family
ID=40576098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200870391U Expired - Fee Related CN201222596Y (en) | 2008-05-08 | 2008-05-08 | Oil return mechanism for single hand connector crimping tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201222596Y (en) |
-
2008
- 2008-05-08 CN CNU2008200870391U patent/CN201222596Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 Termination date: 20100508 |