CN212240894U - Power structure of all-round type electric hydraulic tool - Google Patents
Power structure of all-round type electric hydraulic tool Download PDFInfo
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- CN212240894U CN212240894U CN202020428960.9U CN202020428960U CN212240894U CN 212240894 U CN212240894 U CN 212240894U CN 202020428960 U CN202020428960 U CN 202020428960U CN 212240894 U CN212240894 U CN 212240894U
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Abstract
The invention discloses a power structure of an all-round type electric hydraulic tool, which mainly comprises a hydraulic pump, an oil bag, a driving motor, a battery and a control circuit board; the hydraulic pump comprises a pump body, a piston cavity is arranged in the pump body, a working piston is arranged in the piston cavity, and a piston rod of the working piston extends out of the top end of the pump body and is connected with a working tong head assembly; an oil inlet passage and an oil return passage which are not communicated with each other are arranged between the piston cavity and the oil bag; the inlet of the oil inlet passage at the side of the oil bag is provided with a front one-way valve, the outlet of the oil inlet passage at the side of the piston cavity is provided with a rear one-way valve, and the oil inlet passage is provided with an oil inlet device which pressurizes and conveys low-pressure oil in the oil bag to the piston cavity; and the oil return passage is provided with a pressure relief device which is opened when the oil pressure in the piston cavity exceeds a set value. The design of the invention can automatically and rapidly realize the pressurized oil inlet and the pressure relief oil return of the hydraulic tool, has the characteristic of labor saving and simple and convenient operation, and can meet the pressurized operation of various hydraulic tools such as crimping, shearing, perforating, breaking and the like.
Description
Technical Field
The invention relates to a hydraulic tool, in particular to a power structure of an all-round electric hydraulic tool.
Background
The cable is a wire product for transmitting electric (magnetic) energy, information and realizing electromagnetic energy conversion, and is widely applied to electric power and signal transmission of electric power and telecommunication. With the continuous promotion of modern industrialization, the arrangement and the use of cables are more and more, and how to install the cables quickly becomes a more important problem.
When installing a cable, it is often necessary to cut the cable, connect the cable and a terminal, punch a hole in a corresponding building, break a nut, etc. according to actual conditions, and these operations inevitably require hydraulic tools such as crimping, shearing, drilling, breaking, etc. At present, however, the existing hydraulic tools are manual operation structures, which not only are labor-consuming in operation and high in labor intensity, but also are slow in oil inlet speed, seriously affect the operation speed and are difficult to meet the use requirements of large-project cable wiring.
Disclosure of Invention
Aiming at the problems, the invention designs the power structure of the all-round electric hydraulic tool, which can automatically and quickly realize the pressurized oil feeding and the pressure relief oil returning of the hydraulic tool, has the characteristics of labor saving and simplicity and convenience in operation, can meet the pressurized operation of various hydraulic tools such as crimping, shearing, perforating, breaking and the like, and can greatly improve the wiring speed of cables.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a power structure of electronic hydraulic tool of all-round type which characterized in that: the device mainly comprises a hydraulic pump, an oil bag, a driving motor, a battery and a control circuit board; the hydraulic pump comprises a pump body, a piston cavity is arranged in the front half section of the pump body, a working piston is arranged in the piston cavity, and a piston rod of the working piston extends out of the top end of the pump body and is connected with a working tong head assembly; an oil inlet passage and an oil return passage which are not communicated with each other are arranged between the piston cavity and the oil bag; the inlet of the oil inlet passage at the oil bag side is provided with a front one-way valve, the outlet of the oil inlet passage at the piston cavity side is provided with a rear one-way valve, and the oil inlet passage is provided with an oil inlet device which pressurizes and conveys low-pressure oil in the oil bag to the piston cavity; the oil return passage is provided with a pressure relief device which is opened when the oil pressure in the piston cavity exceeds a set value; the driving motor is arranged on the side edge of the hydraulic pump, the driving motor is electrically connected with the circuit control board, the whole driving motor is connected with the side wall of the pump body through a motor base at the front end, and the driving motor drives the oil inlet device to work so as to realize pressurized oil inlet; the battery is arranged below the oil bag and the driving motor and supplies power for the motor and the control circuit board; the control circuit board controls the start and stop operation of the driving motor through a start button on the shell, and the pressure relief device sends a signal to the control circuit board after being opened and automatically cuts off the driving motor.
More specifically, the oil inlet device comprises an oil inlet mounting hole and an oil inlet pump, wherein the oil inlet mounting hole is arranged on an oil inlet passage in the pump body; the oil inlet pump comprises a return spring, a valve core, a pump plug, an oil pump end seal and a pump core, wherein the return spring, the valve core, the pump plug and the oil pump end seal are sequentially arranged in the oil inlet mounting hole, the oil pump end seal is in sealing connection with the opening part of the oil inlet mounting hole, so that the return spring has a certain precompression amount, and the spring, the valve core and the pump plug form a dynamic fit relation; the front end of the pump core penetrates through an end-sealing inner hole of the oil pump to be supported with the pump plug, the rear end of the pump core extends into the motor base to be abutted against an eccentric wheel in the motor base, and the eccentric wheel drives the pump core, the pump plug and the valve core to do reciprocating telescopic motion in operation so as to realize pressurized oil feeding of the oil feeding device.
More specifically, the pressure relief device comprises a pressure relief mounting hole and a pressure relief valve arranged in the hole; the pressure relief mounting hole is arranged on an oil return passage in the pump body; the pressure release valve comprises a valve seat, a safety valve piston, an ejector pin, a safety valve spring, an end cap and an adjusting screw; the center of the bottom of the mounting hole is communicated with an oil inlet end of the oil return passage; the front end of the valve seat is fixed at the bottom of the pressure relief mounting hole through a threaded head structure, a straight-through pressure relief hole is formed in the center of the valve seat, and the pressure relief hole is straight-through with the oil return passage; the safety valve piston is fixedly arranged at the head of the thimble, and the outer side of the safety valve piston is in sealing fit connection with the pressure relief mounting hole; a conical tip capable of blocking the pressure relief hole is convexly arranged at the center of the top end of the ejector pin, the rear end of the ejector pin movably penetrates through the inner hole of the blocking end and extends out of a part of the inner hole, and a safety valve spring is arranged between a safety valve piston outside the ejector pin and the blocking end; a thread adjusting hole is formed beside the pressure relief safety hole, the adjusting screw with adjustable depth is installed in the thread adjusting hole, and a cap of the adjusting screw is connected with the outer end of the end cap in an abutting mode; and in an initial state, the safety valve spring has precompression quantity so that the conical tip on the thimble moves downwards to block the outlet of the pressure relief hole on the valve seat.
More specifically, a clamping groove is arranged on the rear end part of the thimble; the motor base is provided with an oil return pressing plate, the middle part of the oil return pressing plate is hinged with the motor base through a pin shaft, the hinge part of the pin shaft is provided with a torsion spring, so that the whole oil return pressing plate always has the tendency of rotating towards the pump body side, the oil return pressing plate is provided with a notch groove on the side close to the pump body, and the notch groove can be clamped and connected with the clamping groove on the thimble; the other side of the oil return pressing plate can be connected with a pressure relief button on the shell, and the pressing of the pressure relief button can enable the whole oil return pressing plate to rotate and pull out the ejector pin to perform pressure relief operation.
More specifically, the pump body is formed by combining an oil cylinder pipe and a rear cylinder body; the rear end of the oil cylinder pipe is provided with a front cavity, and the front end of the rear cylinder body is provided with a rear cavity; the oil cylinder pipe and the rear cylinder body are connected into a whole through threads, so that the front cavity and the rear cavity are combined to form the piston cavity.
More specifically, the filter screen is arranged in front of the front check valve of the oil inlet passage.
In the work, the battery supplies power for the driving motor and the control circuit board, the motor works to enable the oil inlet device to work, low-pressure oil in the oil bag is pressurized and then sent to the piston cavity, the piston rod is pushed to extend out to carry out operations such as crimping, shearing, punching, breaking and the like on the tong head assembly, manual pressurization is not needed in the whole working process, the hydraulic pressure-increasing clamp has the advantages of being labor-saving and convenient to operate, the machining efficiency of the cable can be greatly improved, and the use requirement of cable wiring in modern large engineering is met.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a first exploded perspective view of the present invention with the housing removed;
FIG. 3 is a second exploded perspective view of the present invention with the housing removed;
FIG. 4 is a schematic perspective view of the rear cylinder of the present invention;
FIG. 5 is a front view of the rear cylinder of the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5 in accordance with the present invention;
FIG. 7 is a top view of the rear cylinder of the present invention;
FIG. 8 is a cross-sectional view of portion B-B of FIG. 7 of the present invention;
FIG. 9 is a schematic perspective exploded view of the oil feed apparatus of the present invention;
fig. 10 is a schematic perspective exploded view of the pressure relief valve of the present invention.
Detailed Description
As shown in fig. 1 to 10, a power structure of an all-purpose electric hydraulic tool mainly includes a housing 1, and a hydraulic pump 2, an oil bag 3, a driving motor 4, a battery 5, and a control circuit board 6 which are disposed in the housing 1.
The hydraulic pump 2 includes a pump body 21, the pump body 21 is provided with a piston chamber 22 in the front half section thereof, a working piston 23 is installed in the piston chamber 22, and the piston rod of the working piston 23 extends out from the top end of the pump body 21 to be connected with a working tong head assembly 232.
Here, the pump body 21 is formed by combining a cylinder tube 21a and a rear cylinder body 21b in consideration of the need for self-processing and installation of the working piston 23. The cylinder tube 21a is provided at the rear end thereof with a front chamber 21a1, and the rear cylinder tube 21b is provided at the front end thereof with a rear chamber 21b 1. The cylinder tube 21a and the rear cylinder 21b are integrally screwed together, and the front chamber 21a1 and the rear chamber 21b1 are combined to form the piston chamber 22.
The pump body 21 is provided with an oil inlet passage 211 and an oil return passage 212 which are not communicated with each other between the piston cavity 22 and the oil bag 3.
The inlet of the oil inlet passage 211 at the side of the oil bag 3 is provided with a front one-way valve 2111, the outlet of the oil inlet passage 211 at the side of the piston cavity 22 is provided with a rear one-way valve 2112, and the oil inlet passage 211 is provided with an oil inlet device 8 for pressurizing and conveying low-pressure oil in the oil bag 3 to the piston cavity 22.
Here, in order to prevent oil with impurities from entering the pump body 21 to affect the operation, the oil inlet passage 211 is provided with a filter mesh 2113 before the front check valve 2111.
Driving motor 4 sets up the side at hydraulic pump 2, and driving motor 4 electric connection circuit control panel 6, and whole driving motor 4 links to each other with the pump body 21 through the motor cabinet 41 of front end, and motor cabinet 41 links firmly with the pump body 21 lateral wall through the face 411 and a plurality of screws 412 are connected to an arc on it, driving motor 4 is driving oil feed device 8 work and is realizing the pressurization oil feed.
The oil inlet device 8 includes an oil inlet mounting hole 81 and an oil inlet pump 82.
Wherein the oil-intake mounting hole 81 is provided on the oil-intake passage 211 in the pump body 21.
The oil inlet pump 82 comprises a return spring 821, a valve core 822, a pump plug 823, an oil pump sealing end 824 and a pump core 825, wherein the return spring 821, the valve core 822, the pump plug 823 and the oil pump sealing end 824 are sequentially arranged in the oil inlet mounting hole 81, the oil pump sealing end 824 is in sealing connection with the opening of the oil inlet mounting hole 81 to enable the return spring 821 to have a certain pre-compression amount, and then the return spring 821, the valve core 822 and the pump plug 823 form a dynamic fit relationship. The front end of the pump core 825 penetrates through an inner hole of the oil pump sealing end 824 to be supported with the pump plug 823, the rear end of the pump core 825 extends into the motor base 41 to be abutted against an eccentric wheel therein, and the operation of the eccentric wheel drives the pump core 825, the pump plug 823 and the valve core 822 to perform reciprocating telescopic motion so as to realize the pressurization oil feeding of the oil feeding device.
When the pump core 825 extends to push the pump plug 823 and the valve core 822 to further press the return spring 821, the return spring presses the space in the oil inlet mounting hole 81 to enable hydraulic oil to enter the oil inlet passage 211, so that the oil pressure in the oil inlet passage 211 is increased, the front check valve 2111 is closed, the rear check valve 2112 is opened, and the pressurized hydraulic oil is sent to the piston cavity 22; when the pump core 825 retracts, the pump plug 823 and the valve core 822 will return to pop up under the action of the return force of the return spring 821, and at this time, the space of the oil inlet mounting hole 81 is increased to generate negative pressure in the oil inlet passage 211, which will close the rear check valve 2112 and open the front check valve 2111, so that low-pressure oil is sucked into the oil inlet passage 211 from the oil bag 3. By analogy, with the reciprocating continuous compression motion of the pump core 825, the pump plug 823 and the valve core 822, oil can be quickly pressurized and supplied to the piston cavity 22, so as to quickly push the working piston rod 231 to move forward and perform corresponding operation.
The oil return passage 212 is provided with a pressure relief device 9 which can be opened manually or automatically when the oil pressure in the piston cavity 22 exceeds a set value.
The pressure relief device 9 includes a pressure relief mounting hole 91 and a pressure relief valve 92 provided in the hole.
The pressure relief mounting hole 91 is provided on an oil return passage 212 in the pump body 21.
The relief valve 92 includes a valve seat 921, a relief valve piston 922, a thimble 923, a relief valve spring 924, a sealing end 925, and an adjusting screw 926.
The center of the bottom of the mounting hole 91 is communicated with the oil inlet end of the oil return passage 212.
The front end of the valve seat 921 is fixed at the bottom of the pressure relief mounting hole 91 through a thread head structure, a composite gasket 9212 is arranged at the joint of the two to ensure the connection tightness, a through pressure relief hole 9211 is arranged at the center of the valve seat 921, and the pressure relief hole 9211 is directly communicated with the oil return passage 212.
The safety valve piston 922 is fixedly installed at the head of the thimble 923, and the outer side of the safety valve piston 922 is connected with the pressure relief installation hole 91 in a sealing fit manner.
The center of the top end of the thimble 923 is convexly provided with a conical tip 9231 which can seal the pressure relief hole 9211, the rear end of the thimble 923 movably passes through the inner hole of the end cap 925 and extends out of a part, and a safety valve spring 924 is arranged between a safety valve piston 922 outside the thimble 923 and the end cap 925. A thread adjusting hole 93 is formed beside the pressure relief mounting hole 91, a depth-adjustable adjusting screw 926 is mounted in the thread adjusting hole 93, and a cover cap 9261 of the adjusting screw 926 is abutted against the outer end of the sealing end 925. In the initial state, the relief valve spring 924 has a pre-compressed amount to move the conical tip 9231 on the thimble 923 downward to block the outlet of the relief hole 9211 on the valve seat. In operation, the adjusting screw 926 is first adjusted to a suitable depth as required for pressurization so that the relief valve spring 924 has a corresponding precompression amount, and in use, when the tong head assembly 232 is pressurized to a set load, the oil pressure in the piston chamber 22 and the oil return passage 212 can overcome the restoring force of the relief valve spring 924, and at this time, the tapered tip 9231 on the thimble 923 can be pushed open for automatic pressure relief operation.
Here, in order to realize manual pressure relief, a clamping groove 9232 is formed on the rear end portion of the thimble 923. Be equipped with an oil return clamp plate 927 on the motor cabinet 41, the middle part and the motor cabinet 41 of oil return clamp plate 927 are articulated through round pin axle 413, and this round pin axle 413 is provided with torsional spring 414 and makes whole oil return clamp plate 927 have towards pump body 21 side pivoted trend all the time, oil return clamp plate 927 is equipped with a breach groove 9271 on being close to pump body 21 side, this breach groove 9271 can with draw-in groove 9232 block on the thimble 923 is connected. The opposite side of oil return clamp plate 927 can be connected with pressure release button 928 on the casing 1, and the pressing of pressure release button 928 can make whole oil return clamp plate 927 rotate around round pin axle 413, and then the oil return clamp plate 927 keeps away from the pump body 21, and then brings out through the block of breach groove 9271 and draw-in groove 9232 thimble 923 to carry out manual pressure release operation.
The battery 5 is arranged below the oil bag 3 and the driving motor 4, and the battery 5 supplies power for the driving motor 4 to work and the control circuit board 6.
The control circuit board 6 controls the start and stop operation of the driving motor 4 through a start button 11 on the shell 1. After the pressure relief device 9 is automatically opened, a signal is sent to the control circuit board 6, and the work of the driving motor 4 is automatically cut off.
In the work, the battery 5 supplies power for the driving motor 4 and the control circuit board 6, the driving motor 4 operates to drive the oil inlet device 8 to work, so that low-pressure oil in the oil bag 3 is pressurized and then is quickly sent to the piston cavity 22, the piston rod is pushed to extend out, and the tong head assembly 232 is enabled to carry out operations such as crimping, shearing, tapping, breaking and the like.
In the above drawings, only the large square crimping tong head assembly is described, and in practice, the large square crimping tong head assembly can be replaced by a tong head assembly with small square crimping, shearing, punching, breaking and the like according to needs.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change or modification made to the above embodiments according to the technical principle of the present invention still falls within the scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides a power structure of electronic hydraulic tool of all-round type which characterized in that: the device mainly comprises a hydraulic pump, an oil bag, a driving motor, a battery and a control circuit board; the hydraulic pump comprises a pump body, a piston cavity is arranged in the front half section of the pump body, a working piston is arranged in the piston cavity, and a piston rod of the working piston extends out of the top end of the pump body and is connected with a working tong head assembly; an oil inlet passage and an oil return passage which are not communicated with each other are arranged between the piston cavity and the oil bag; the inlet of the oil inlet passage at the oil bag side is provided with a front one-way valve, the outlet of the oil inlet passage at the piston cavity side is provided with a rear one-way valve, and the oil inlet passage is provided with an oil inlet device which pressurizes and conveys low-pressure oil in the oil bag to the piston cavity; the oil return passage is provided with a pressure relief device which is opened when the oil pressure in the piston cavity exceeds a set value; the driving motor is arranged on the side edge of the hydraulic pump, the driving motor is electrically connected with the circuit control board, the whole driving motor is connected with the side wall of the pump body through a motor base at the front end, and the driving motor drives the oil inlet device to work so as to realize pressurized oil inlet; the battery is arranged below the oil bag and the driving motor and supplies power for the driving motor and the control circuit board; the control circuit board controls the start and stop operation of the driving motor through a start button on the shell, and the pressure relief device sends a signal to the control circuit board after being opened and automatically cuts off the driving motor.
2. The power structure of a universal electro-hydraulic tool as claimed in claim 1, wherein: the oil inlet device comprises an oil inlet mounting hole and an oil inlet pump, wherein the oil inlet mounting hole is arranged on an oil inlet passage in the pump body; the oil inlet pump comprises a return spring, a valve core, a pump plug, an oil pump end seal and a pump core, wherein the return spring, the valve core, the pump plug and the oil pump end seal are sequentially arranged in the oil inlet mounting hole, the oil pump end seal is in sealing connection with the opening part of the oil inlet mounting hole, so that the return spring has a certain precompression amount, and the spring, the valve core and the pump plug form a dynamic fit relation; the front end of the pump core penetrates through an end-sealing inner hole of the oil pump to be supported with the pump plug, the rear end of the pump core extends into the motor base to be abutted against an eccentric wheel in the motor base, and the eccentric wheel drives the pump core, the pump plug and the valve core to do reciprocating telescopic motion in operation so as to realize pressurized oil feeding of the oil feeding device.
3. The power structure of a full-function type electro-hydraulic tool as claimed in claim 1 or 2, characterized in that: the pressure relief device comprises a pressure relief mounting hole and a pressure relief valve arranged in the hole; the pressure relief mounting hole is arranged on an oil return passage in the pump body; the pressure release valve comprises a valve seat, a safety valve piston, an ejector pin, a safety valve spring, an end cap and an adjusting screw; the center of the bottom of the mounting hole is communicated with an oil inlet end of the oil return passage; the front end of the valve seat is fixed at the bottom of the pressure relief mounting hole through a threaded head structure, a straight-through pressure relief hole is formed in the center of the valve seat, and the pressure relief hole is straight-through with the oil return passage; the safety valve piston is fixedly arranged at the head of the thimble, and the outer side of the safety valve piston is in sealing fit connection with the pressure relief mounting hole; a conical tip capable of blocking the pressure relief hole is convexly arranged at the center of the top end of the ejector pin, the rear end of the ejector pin movably penetrates through the inner hole of the blocking end and extends out of a part of the inner hole, and a safety valve spring is arranged between a safety valve piston outside the ejector pin and the blocking end; a thread adjusting hole is formed beside the pressure relief safety hole, the adjusting screw with adjustable depth is installed in the thread adjusting hole, and a cap of the adjusting screw is connected with the outer end of the end cap in an abutting mode; and in an initial state, the safety valve spring has precompression quantity so that the conical tip on the thimble moves downwards to block the outlet of the pressure relief hole on the valve seat.
4. A power structure of a full-function electro-hydraulic tool as claimed in claim 3, characterized in that: a clamping groove is formed in the rear end part of the ejector pin; the motor base is provided with an oil return pressing plate, the middle part of the oil return pressing plate is hinged with the motor base through a pin shaft, the hinge part of the pin shaft is provided with a torsion spring, so that the whole oil return pressing plate always has the tendency of rotating towards the pump body side, the oil return pressing plate is provided with a notch groove on the side close to the pump body, and the notch groove can be clamped and connected with the clamping groove on the thimble; the other side of the oil return pressing plate can be connected with a pressure relief button on the shell, and the pressing of the pressure relief button can enable the whole oil return pressing plate to rotate and pull out the ejector pin to perform pressure relief operation.
5. The power structure of a full-function type electro-hydraulic tool as claimed in claim 1 or 2, characterized in that: the pump body is formed by combining an oil cylinder pipe and a rear cylinder body; the rear end of the oil cylinder pipe is provided with a front cavity, and the front end of the rear cylinder body is provided with a rear cavity; the oil cylinder pipe and the rear cylinder body are connected into a whole through threads, so that the front cavity and the rear cavity are combined to form the piston cavity.
6. The power structure of a full-function type electro-hydraulic tool as claimed in claim 1 or 2, characterized in that: and a filtering net cover is arranged in front of the front check valve of the oil inlet passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020428960.9U CN212240894U (en) | 2020-03-28 | 2020-03-28 | Power structure of all-round type electric hydraulic tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020428960.9U CN212240894U (en) | 2020-03-28 | 2020-03-28 | Power structure of all-round type electric hydraulic tool |
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| CN212240894U true CN212240894U (en) | 2020-12-29 |
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| CN202020428960.9U Active CN212240894U (en) | 2020-03-28 | 2020-03-28 | Power structure of all-round type electric hydraulic tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469098A (en) * | 2020-03-28 | 2020-07-31 | 林仁义 | Power structure of all-round type electric hydraulic tool |
| CN114738263A (en) * | 2022-04-16 | 2022-07-12 | 台州巨力工具股份有限公司 | Oil control system |
-
2020
- 2020-03-28 CN CN202020428960.9U patent/CN212240894U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111469098A (en) * | 2020-03-28 | 2020-07-31 | 林仁义 | Power structure of all-round type electric hydraulic tool |
| CN114738263A (en) * | 2022-04-16 | 2022-07-12 | 台州巨力工具股份有限公司 | Oil control system |
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