CN111561435A - Hand-held double-tube single-connection electric hydraulic pump - Google Patents
Hand-held double-tube single-connection electric hydraulic pump Download PDFInfo
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- CN111561435A CN111561435A CN202010470450.2A CN202010470450A CN111561435A CN 111561435 A CN111561435 A CN 111561435A CN 202010470450 A CN202010470450 A CN 202010470450A CN 111561435 A CN111561435 A CN 111561435A
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 53
- 238000005086 pumping Methods 0.000 claims abstract description 37
- 230000033228 biological regulation Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 241001622623 Coeliadinae Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a handheld double-pipe single-connection electric hydraulic pump which comprises a handheld base, a driving assembly, an oil bag, an oil pumping assembly, an oil outlet assembly and a pressure relief assembly. The driving assembly, the oil pumping assembly and the oil outlet assembly are sequentially connected along the axial direction. The oil outlet assembly comprises an oil outlet connecting seat, an oil pipe interface, an oil outlet pipe and an oil return pipe, wherein the oil outlet pipe and the oil return pipe are arranged in the oil pipe interface, the oil pipe interface is connected to the oil pumping assembly through the oil outlet seat, and the oil outlet pipe and the oil return pipe are respectively communicated with an oil outlet hole and an oil bag of the oil pumping assembly through the oil outlet connecting seat. The pressure relief and pressure regulation assembly comprises a pressure relief block, a pressure relief switch and a regulating valve, the pressure relief block is arranged on the oil outlet connecting seat, the pressure relief block is provided with a pressure relief oil path and a pressure regulation oil path which are respectively communicated with an oil outlet of the oil pumping assembly and the oil bag, and the pressure relief oil path is opened or closed by the pressure relief switch; the regulating valve is arranged in the pressure regulating oil way, and the oil pressure output from the oil outlet hole of the oil pumping assembly to the oil outlet pipe is regulated when the pressure releasing oil way is closed.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to a handheld double-pipe single-connection electric hydraulic pump.
Background
In various rescue fields, rescue teams and policemen can use special rescue tools to break and dismantle metal or nonmetal structures to rescue victims trapped in dangerous environments. Among these rescue tools, an electrically powered hydraulic pump that provides a power source is one of the essential important tools. The electric hydraulic pump on the market at present is very bulky and heavy, not only is very difficult to carry, but also greatly limits the working area due to the volume and the weight of the electric hydraulic pump, and is difficult to operate in narrow and small places such as narrow and long gaps in disaster relief sites.
In addition, the oil circuit of the existing electric hydraulic pump is very complex, the complex oil circuit not only makes the volume of the electric hydraulic pump large, but also makes the leakage risk higher and the safety performance worse.
Disclosure of Invention
The invention provides a handheld double-pipe single-connection electric hydraulic pump for overcoming the defects of the prior art.
In order to achieve the above object, the present invention provides a handheld double-tube single-connection electric hydraulic pump, which includes a handheld base, a driving assembly, an oil bag, an oil pumping assembly, an oil outlet assembly, and a pressure relief assembly. The driving assembly, the oil pumping assembly and the oil outlet assembly are sequentially connected along the axial direction. The oil outlet assembly comprises an oil outlet connecting seat, an oil pipe interface, an oil outlet pipe and an oil return pipe, wherein the oil outlet pipe and the oil return pipe are arranged in the oil pipe interface, the oil pipe interface is connected to the oil pumping assembly through the oil outlet seat, and the oil outlet pipe and the oil return pipe are respectively communicated with an oil outlet hole and an oil bag of the oil pumping assembly through the oil outlet connecting seat. The pressure relief and pressure regulation assembly comprises a pressure relief block, a pressure relief switch and a regulating valve, the pressure relief block is arranged on the oil outlet connecting seat, the pressure relief block is provided with a pressure relief oil path and a pressure regulation oil path which are respectively communicated with an oil outlet of the oil pumping assembly and the oil bag, and the pressure relief oil path is opened or closed by the pressure relief switch; the regulating valve is arranged in the pressure regulating oil way, and the oil pressure output from the oil outlet hole of the oil pumping assembly to the oil outlet pipe is regulated when the pressure releasing oil way is closed.
According to an embodiment of the invention, the pressure relief block is provided with an oil inlet hole, an oil return hole, a first pressure regulating oil hole, a first oil groove, a second pressure regulating oil hole and a second oil groove, the oil inlet hole is communicated with the oil outlet hole of the oil pumping assembly, the oil return hole is communicated with the oil bag, the regulating valve is arranged between the oil inlet hole and the first pressure regulating oil hole, the first oil groove is communicated with the first pressure regulating oil hole and the second pressure regulating oil hole, and the second oil groove is communicated with the second pressure regulating oil hole and the oil return hole;
the pressure relief switch is communicated with or used for plugging a pressure relief oil path between the oil inlet hole and the oil return hole;
the pressure regulating oil path is formed by regulating or plugging the oil inlet hole, the first pressure regulating oil hole, the first oil groove, the second pressure regulating oil hole, the second oil groove and the oil return hole by the regulating valve.
According to an embodiment of the invention, the oil outlet connecting seat comprises a pump body connecting seat and an oil pipe connecting seat which are hermetically connected, the pump body connecting seat is connected to the oil pumping assembly, the oil pipe connecting seat is connected to the oil pipe joint, and an oil outlet channel and an oil return channel which are respectively communicated with the oil outlet pipe and the oil return pipe are arranged in the oil pipe connecting seat.
According to an embodiment of the invention, the oil pumping assembly is provided with a plurality of oil outlet holes, the pump body connecting seat is provided with a strip-shaped oil groove which axially penetrates through the pump body connecting seat, the strip-shaped oil groove is communicated with the oil outlet holes on the oil pumping assembly, oil pumped by the oil outlet holes is collected and then input into an oil outlet channel of the oil pipe connecting seat, and the pressure regulating oil path is communicated with the strip-shaped oil groove.
According to an embodiment of the invention, the strip-shaped oil groove is composed of a plurality of oil groove subsections, the strip-shaped oil groove between two adjacent oil outlet holes is an oil groove subsection, and the center line of the cross section of the oil groove subsection is a straight line or an arc line.
According to an embodiment of the invention, the oil pumping assembly is provided with three oil outlet holes which are uniformly distributed along the circumferential direction, the second oil outlet hole and the third oil outlet hole are close to the pressure relief and pressure regulation assembly, the cross section center line of the oil groove subsection which is communicated with the first oil outlet hole and the second oil outlet hole is a straight line, the cross section center line of the oil groove subsection which is communicated with the second oil outlet hole and the third oil outlet hole is an arc line, the arc line is protruded towards one side where the pressure relief and pressure regulation assembly is located, and the two oil groove subsections form a sickle-shaped strip-shaped oil.
According to an embodiment of the present invention, a surface of the pump body connecting seat contacting the oil pipe connecting seat is provided with a flow guiding groove passing through the strip-shaped oil groove, and the flow guiding groove is communicated with the oil outlet channel on the oil pipe connecting seat and guides oil output from the strip-shaped oil groove into the oil outlet channel.
According to an embodiment of the present invention, the oil pipe connecting seat has an extension section formed in a circumferential direction of the oil return passage and protruding from a surface of the oil pipe connecting seat, the pump body connecting seat has a groove matching with the extension section, and the extension section of the oil return passage extends into the groove of the pump body connecting seat.
According to an embodiment of the invention, an axial sealing groove is arranged on the contact surface of the oil pipe connecting seat and the pump body connecting seat and positioned outside the oil outlet channel and the oil return channel, and a sealing ring in the axial sealing groove seals the contact surface of the oil pipe connecting seat and the pump body connecting seat.
According to an embodiment of the invention, a radial seal groove is formed on the extension section of the oil return channel, and the seal extension section of the seal ring arranged in the radial seal groove and a groove matched with the seal extension section are arranged in the radial seal groove.
In summary, in the handheld double-pipe single-connection electric hydraulic pump provided by the invention, the driving assembly, the oil pumping assembly and the oil outlet assembly are sequentially connected along the axial direction, and the handheld double-pipe single-connection electric hydraulic pump integrally extends along the axial direction by the arrangement, so that the volume of the electric hydraulic pump is greatly reduced. The oil outlet pipe and the oil return pipe are integrated in the same oil pipe interface on the oil outlet assembly, so that the effect of double-pipe single connection is realized, the connection of the electric hydraulic pump and the working head is greatly facilitated, and the miniaturization of the electric hydraulic pump is further realized. Pressure release pressure regulating subassembly collection manual pressure release and automatic pressure release in an organic whole, this setting can be fine ensure that the electronic hydraulic pump is miniaturized while have fine security.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of a handheld dual-tube single-connection electric hydraulic pump according to an embodiment of the present invention.
Fig. 2 and 3 are schematic structural diagrams of fig. 1 at another viewing angle.
Fig. 4 is a schematic cross-sectional view of fig. 2.
Fig. 5 is an enlarged schematic view of a portion a of fig. 4.
FIG. 6 is a schematic cross-sectional view of the oil inlet hole and the first pressure adjusting oil hole in FIG. 3 during automatic pressure relief.
Fig. 7 is a schematic cross-sectional view of the second pressure-regulating oil hole and the oil return hole in fig. 3 during automatic pressure relief.
Fig. 8 is a schematic view showing the assembly of the pressure relief switch and the pressure relief block in the case of manual pressure relief.
FIG. 9 is a schematic cross-sectional view of the second pressure-regulating oil hole and the oil return hole in FIG. 3 during manual pressure relief.
Fig. 10 is a schematic structural view of the pressure relief block.
Fig. 11 is a schematic structural view of the pump body connection seat.
Fig. 12 is a schematic structural view of the tubing connector block.
Detailed Description
As shown in fig. 1 to 3, the handheld double-tube single-connection electric hydraulic pump provided in this embodiment includes a handheld base 1, a driving assembly 2, an oil bag (not shown in the drawings due to a view angle), an oil pumping assembly 3, an oil outlet assembly 4, and a pressure relief and adjustment assembly 5. The driving assembly 2, the oil pumping assembly 3 and the oil outlet assembly 4 are sequentially connected along the axial direction. The oil outlet assembly 4 comprises an oil outlet connecting seat 41, an oil pipe interface 42, an oil outlet pipe 43 and an oil return pipe 44 which are arranged in the oil pipe interface 42, the oil pipe interface 42 is connected to the oil pumping assembly 3 through the oil outlet connecting seat 41, and the oil outlet pipe 43 and the oil return pipe 44 are respectively communicated with an oil outlet hole and an oil bag of the oil pumping assembly 3 through the oil outlet connecting seat 41. The pressure relief and pressure regulation assembly 5 comprises a pressure relief block 51, a pressure relief switch 52 and a regulating valve 53, the pressure relief block 51 is arranged on the oil outlet connecting seat 41, the pressure relief block 51 is provided with a pressure relief oil path and a pressure regulation oil path which are respectively communicated with an oil outlet of the oil pumping assembly 3 and an oil bag, and the pressure relief oil path is opened or closed by the pressure relief switch 52; the regulator valve 53 is provided in the pressure-adjusting oil passage, and regulates the oil pressure output from the oil pump unit 3 to the oil outlet pipe 43 when the pressure-releasing switch 52 closes the pressure-releasing oil passage.
The drive assembly 2, the oil pumping assembly 3 and the oil outlet assembly 4 which are sequentially connected along the axial direction in the handheld double-pipe single-connection electric hydraulic pump provided by the embodiment greatly reduce the volume of the equipment, and realize the miniaturization of the equipment. The pressure relief and pressure regulation assembly 5 integrates automatic pressure regulation and manual pressure relief, so that the oil circuit safety of the miniaturized handheld double-pipe single-connection electric hydraulic pump is ensured, the structure of the oil circuit is further simplified, the volume of the electric hydraulic pump is further simplified, and the safety is further improved due to the simplification of the oil circuit. The oil outlet pipe 43 and the oil return pipe 44 are integrated in the oil pipe connector 42, so that the connection between the electric hydraulic pump and an external working head is greatly facilitated, and the operation is very simple and convenient.
In the present embodiment, as shown in fig. 6 to 10, the pressure relief block 51 has an oil inlet 511, an oil return 512, a first pressure-regulating oil hole 513, a first oil groove 514, a second pressure-regulating oil hole 515, and a second oil groove 516, the oil inlet 511 communicates with the oil outlet of the oil pumping assembly 3, the oil return 512 communicates with the oil bag, the regulating valve 53 is disposed between the oil inlet 511 and the first pressure-regulating oil hole 513, the first oil groove 514 communicates with the first pressure-regulating oil hole 513 and the second pressure-regulating oil hole 515, and the second oil groove 516 communicates with the second pressure-regulating oil hole 515 and the oil return 512. The pressure relief switch 53 communicates or blocks a pressure relief oil path between the oil inlet 511 and the oil return 512. The regulating valve 53 regulates or blocks a pressure regulating oil path composed of the oil inlet 511, the first pressure regulating oil hole 513, the first oil groove 514, the second pressure regulating oil hole 515, the second oil groove 516 and the oil return hole 512.
In the embodiment, the oil outlet connecting seat 41 includes a pump body connecting seat 411 and an oil pipe connecting seat 412 which are hermetically connected, the pump body connecting seat 411 is connected to the oil pumping assembly 3, the oil pipe connecting seat 412 is connected to the oil pipe joint 42, and the oil pipe connecting seat 412 has an oil outlet passage 4121 and an oil return passage 4122 which are respectively communicated with the oil outlet pipe 43 and the oil return pipe 44. The oil pumping assembly 3 is a three-plunger pump, three oil outlets are formed in the three-plunger pump, a strip-shaped oil groove 4111 which axially penetrates through the pump body connecting seat 411 is formed in the pump body connecting seat 411, the strip-shaped oil groove 4111 is communicated with the three oil outlets in the oil pumping assembly 3, and oil pumped out of the three oil outlets is collected and then input into an oil outlet channel 4121 of the oil pipe connecting seat. The oil inlet 511 of the pressure relief block 51 is communicated with the strip-shaped oil groove 4111. However, the present invention is not limited thereto.
The pressure regulating and relieving principle of the handheld double-tube single-connection electric hydraulic pump provided by the embodiment will be described in detail with reference to fig. 6 to 9.
When the oil pump works normally, the pressure relief switch 52 blocks the oil inlet 511 and the oil return 512, and a pressure relief oil path is blocked. The oil output from the three oil outlets on the oil pumping assembly 3 is collected into the strip oil groove 4111 on the pump body connecting seat 411, and is output to the oil outlet channel 4121 of the pipe connecting seat through the strip oil groove 4111, and then enters the oil outlet pipe 43 to be output to the rodless cavity of the external working head, so as to push the external working head to move, and meanwhile, the oil in the rod cavity of the external working head is squeezed into the oil return pipe 44. In this process, when the oil pressure in the stick oil groove 4111 exceeds the pressure of the regulator valve 53 located in the pressure regulating oil path, the oil pushes the regulator valve 53 through the oil inlet 511, the regulator valve 53 opens the pressure regulating oil path, and the oil is discharged through the oil inlet 511 → the regulator valve 53 → the first pressure regulating oil hole 513 → the first oil groove 514 → the second pressure regulating oil hole 515 → the second oil groove 516 → the oil return hole 512 (as shown by arrows in fig. 6 and 7), so that the oil pressure in the stick oil groove 4111 is maintained within the oil pressure range set by the regulator valve 53, thereby ensuring the safety of the oil pressure during operation and avoiding problems such as leakage due to excessive oil pressure.
After the operation of the external working head is completed, the operator triggers the pressure relief switch 52 to make the pressure relief switch 52 communicate the oil inlet 511 and the oil return 512 of the pressure relief block 51. At this time, the oil collected in the oil groove 4111 is pumped out by the oil pumping assembly 3 and directly enters the oil return hole 512 for oil return through the oil inlet 511 (as shown by arrows in fig. 8 and 9), and the oil does not enter the oil outlet channel 4121 and the oil outlet pipe 43. Meanwhile, under the action of the return spring in the external working head, the oil in the rodless cavity of the external working head is compressed back to the oil outlet pipe 43 → the oil outlet channel 4121 → the strip-shaped oil groove 4111 → the oil inlet 511 → the oil return hole 512 for quick oil return, and the push rod in the external working head is quickly returned. At this time, the space in the rod chamber increases, the pressure decreases, and the oil in the oil bag is sucked back into the rod chamber through the oil return pipe 44.
In this embodiment, in the pump body connecting seat 411, the setting of the strip-shaped oil groove 4111 makes the oil pressure cross section between the pump body connecting seat 411 and the oil pipe connecting seat 412 very small, oil is not easy to leak, and the safety of oil during transportation is greatly improved. Because the oil pumping assembly 3 is a multi-plunger pump, such as a three-plunger pump or a plunger-free pump, the oil pumping assembly 3 is provided with a plurality of oil outlet holes; in this embodiment, the oil pumping unit 3 is a triple plunger pump having three oil outlet holes. In order to communicate with a plurality of oil outlets, the strip-shaped oil groove 4111 is composed of two oil groove subsections, the strip-shaped oil groove between two adjacent oil outlets is an oil groove subsection, and the center line of the cross section of the oil groove subsection is a straight line or an arc line. Particularly, have three oil outlet along circumference evenly distributed on the pump oil subassembly, second oil outlet and third oil outlet are close to pressure release pressure regulating assembly 5, and the cross section central line of the oil groove subsection 4111a of first oil outlet of intercommunication and second oil outlet is the straight line, and the cross section central line of the oil groove subsection 4111b of intercommunication second oil outlet and third oil outlet is the pitch arc, and this pitch arc is protruding to one side at pressure release pressure regulating assembly 5 place, and two oil groove subsections constitute the strip oil groove of hook. However, the present invention does not limit the cross-sectional shape of the bar-shaped oil groove in any way.
In the design of the oil groove 4111, the length of the oil groove segment is as short as possible in order to reduce the oil pressure cross section between the pump body connecting seat 411 and the oil pipe connecting seat 412 as much as possible. Therefore, in this embodiment, the center line of the oil groove segment 4111a is a straight line connecting the first oil outlet and the second oil outlet; the design of the oil groove segment 4111b requires both interference of the space where the pump body connecting seat 411 and the oil pipe connecting seat 412 are matched (e.g., interference with the groove 4113), so that the design is an arc line and the arc line protrudes toward the pressure relief and regulation assembly 5, and this arrangement reduces the oil path entering the pressure relief and regulation assembly 5.
As shown in fig. 11 and 12, a flow guiding groove 4112 passing through the strip oil groove 4111 is formed on the surface of the pump body connecting seat 411 contacting the oil pipe connecting seat 412, and the flow guiding groove 4112 is communicated with an oil outlet channel 4121 on the oil pipe connecting seat. The oil output from the strip oil groove 4111 is guided by the guiding groove 4112 and then enters the oil outlet channel 4121. In addition, the oil pipe connecting seat is provided with an extension 4123 which is formed on the circumference of the oil return channel 4122 and protrudes out of the surface of the oil pipe connecting seat.
The pump body connecting seat 411 is provided with a groove 4113 matched with the extension section, and the extension section 4123 extends into the groove 4113 of the pump body connecting seat. The extension 4123 guides the oil to be returned into the groove 4113, so as to prevent the oil from leaking from the contact surface between the pump body connecting seat 411 and the oil pipe connecting seat 412.
In operation, because the oil pressure in the oil groove 4111 is relatively high, in order to further improve the safety, in this embodiment, as shown in fig. 5 and 12, an axial sealing groove 4124 is formed on the surface of the oil pipe connecting seat 412 contacting the pump body connecting seat 411, the surface being located outside the oil outlet channel 4121 and the oil return channel 4122, and the first sealing ring 413 in the axial sealing groove 4124 seals the contact surface of the oil pipe connecting seat 412 and the pump body connecting seat 411. Further, a radial seal groove 4125 is formed on the extension 4123, and the second seal ring 414 disposed in the radial seal groove 4125 seals the extension 4123 and the groove 4113 engaged therewith. The arrangement of the first sealing ring 413 and the second sealing ring 414 simultaneously and hermetically connects two contact surfaces of the pump body connecting seat 411 and the oil pipe connecting seat 412; even if the oil pressure in the strip-shaped oil groove 4111 is high, two contact surfaces of the pump body connecting seat 411 and the oil pipe connecting seat 412 cannot be deformed, oil cannot leak, and the safety is further improved.
In summary, in the handheld double-pipe single-connection electric hydraulic pump provided by the invention, the driving assembly, the oil pumping assembly and the oil outlet assembly are sequentially connected along the axial direction, and the handheld double-pipe single-connection electric hydraulic pump integrally extends along the axial direction by the arrangement, so that the volume of the electric hydraulic pump is greatly reduced. The oil outlet pipe and the oil return pipe are integrated in the same oil pipe interface on the oil outlet assembly, so that the effect of double-pipe single connection is realized, the connection of the electric hydraulic pump and the working head is greatly facilitated, and the miniaturization of the electric hydraulic pump is further realized. Pressure release pressure regulating subassembly collection manual pressure release and automatic pressure release in an organic whole, this setting can be fine ensure that the electronic hydraulic pump is miniaturized while have fine security.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a double-barrelled singly connect electric hydraulic pump of hand-held type, its characterized in that, including handheld seat, drive assembly, oil bag, pump oil subassembly, the subassembly that produces oil and pressure release subassembly, drive assembly, pump oil subassembly and the subassembly that produces oil connect gradually along the axial, wherein:
the oil outlet assembly comprises an oil outlet connecting seat, an oil pipe interface, an oil outlet pipe and an oil return pipe, wherein the oil outlet pipe and the oil return pipe are arranged in the oil pipe interface;
the pressure relief and pressure regulation assembly comprises a pressure relief block, a pressure relief switch and a regulating valve, the pressure relief block is arranged on the oil outlet connecting seat, the pressure relief block is provided with a pressure relief oil path and a pressure regulation oil path which are respectively communicated with the oil outlet of the oil pumping assembly and the oil bag, and the pressure relief oil path is opened or closed by the pressure relief switch; the regulating valve is arranged in the pressure regulating oil way, and the oil pressure output from the oil outlet hole of the oil pumping assembly to the oil outlet pipe is regulated when the pressure releasing oil way is closed.
2. The hand-held double-tube single-connection electric hydraulic pump according to claim 1, wherein the pressure relief block is provided with an oil inlet hole, an oil return hole, a first pressure regulating oil hole, a first oil groove, a second pressure regulating oil hole and a second oil groove, the oil inlet hole is communicated with the oil outlet hole of the oil pumping assembly, the oil return hole is communicated with an oil bag, the regulating valve is arranged between the oil inlet hole and the first pressure regulating oil hole, the first oil groove is communicated with the first pressure regulating oil hole and the second pressure regulating oil hole, and the second oil groove is communicated with the second pressure regulating oil hole and the oil return hole;
the pressure relief switch is communicated with or used for plugging a pressure relief oil path between the oil inlet hole and the oil return hole;
the pressure regulating oil path is formed by regulating or plugging the oil inlet hole, the first pressure regulating oil hole, the first oil groove, the second pressure regulating oil hole, the second oil groove and the oil return hole by the regulating valve.
3. The hand-held double-tube single-joint electric hydraulic pump of claim 1, wherein the oil outlet connecting seat comprises a pump body connecting seat and an oil pipe connecting seat which are hermetically connected, the pump body connecting seat is connected to the pump oil assembly, the oil pipe connecting seat is connected to the oil pipe joint, and the oil pipe connecting seat is internally provided with an oil outlet channel and an oil return channel which are respectively communicated with the oil outlet pipe and the oil return pipe.
4. The hand-held double-tube single-connection electric hydraulic pump of claim 3, wherein the pump oil assembly has a plurality of oil outlets, the pump body connecting seat has a strip-shaped oil groove axially penetrating the pump body connecting seat, the strip-shaped oil groove is communicated with the plurality of oil outlets on the pump oil assembly, the oil pumped from the plurality of oil outlets is collected and then input into the oil outlet channel of the oil pipe connecting seat, and the pressure regulating oil path is communicated with the strip-shaped oil groove.
5. The hand-held double-pipe single-joint electric hydraulic pump according to claim 3, wherein the strip-shaped oil groove is composed of a plurality of oil groove subsections, the strip-shaped oil groove between two adjacent oil outlet holes is an oil groove subsection, and the cross section center line of the oil groove subsection is a straight line or an arc line.
6. The hand-held double-pipe single-connection electric hydraulic pump of claim 5 is characterized in that the pump oil assembly is provided with three oil outlet holes which are uniformly distributed along the circumferential direction, the second oil outlet hole and the third oil outlet hole are close to the pressure relief and pressure regulation assembly, the cross section center lines of the oil tank subsections for communicating the first oil outlet hole and the second oil outlet hole are straight lines, the cross section center lines of the oil tank subsections for communicating the second oil outlet hole and the third oil outlet hole are arc lines, the arc lines are protruded towards one side where the pressure relief and pressure regulation assembly is located, and the two oil tank subsections form a sickle-shaped strip-shaped oil tank.
7. The hand-held double-tube single-joint electric hydraulic pump according to claim 4, wherein the pump body connecting seat has a flow guiding groove passing through the oil tube connecting seat on the surface contacting with the oil tube connecting seat, and the flow guiding groove is communicated with the oil outlet channel on the oil tube connecting seat and guides the oil output from the oil tube into the oil outlet channel.
8. The hand-held double-tube single-joint electric hydraulic pump according to claim 3 or 7, wherein the oil tube connecting seat has an extension formed in a circumferential direction of the oil return passage and protruding from a surface of the oil tube connecting seat, the pump body connecting seat has a groove fitted with the extension, and the extension of the oil return passage extends into the groove of the pump body connecting seat.
9. The hand-held double-tube single-connection electric hydraulic pump of claim 8, wherein the surface of the oil tube connecting seat contacting the pump body connecting seat is provided with an axial sealing groove outside the oil outlet channel and the oil return channel, and a sealing ring in the axial sealing groove seals the contact surface of the oil tube connecting seat and the pump body connecting seat.
10. The hand-held double-pipe single-joint electric hydraulic pump as claimed in claim 9, wherein a radial seal groove is formed on the extension section of the oil return passage, and a seal ring seal extension section and a groove matched with the seal ring seal extension section are arranged in the radial seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010470450.2A CN111561435A (en) | 2020-05-28 | 2020-05-28 | Hand-held double-tube single-connection electric hydraulic pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010470450.2A CN111561435A (en) | 2020-05-28 | 2020-05-28 | Hand-held double-tube single-connection electric hydraulic pump |
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| CN111561435A true CN111561435A (en) | 2020-08-21 |
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| CN202010470450.2A Pending CN111561435A (en) | 2020-05-28 | 2020-05-28 | Hand-held double-tube single-connection electric hydraulic pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117404270A (en) * | 2023-10-26 | 2024-01-16 | 浙江荣鹏气动工具股份有限公司 | Portable electronic control pressure regulating and pressure releasing structure on spraying machine |
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| CN108343574A (en) * | 2018-03-20 | 2018-07-31 | 浙江工业大学 | A kind of high pressure variable plunger-type fuel pump system and device |
| CN209671154U (en) * | 2018-08-16 | 2019-11-22 | 上海沃恒机械设备有限公司 | A kind of hand-operated foot-pedal dual-purpose hydraulic pump |
| CN212958977U (en) * | 2020-05-28 | 2021-04-13 | 欧盾科技有限公司 | Hand-held double-tube single-connection electric hydraulic pump |
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| CN106286271A (en) * | 2016-11-07 | 2017-01-04 | 常熟通润汽车修理设备有限公司 | A kind of hydraulic pump of forcing press |
| CN107795451A (en) * | 2017-11-29 | 2018-03-13 | 欧盾科技有限公司 | Integrated high pressure oil pump |
| CN108343574A (en) * | 2018-03-20 | 2018-07-31 | 浙江工业大学 | A kind of high pressure variable plunger-type fuel pump system and device |
| CN209671154U (en) * | 2018-08-16 | 2019-11-22 | 上海沃恒机械设备有限公司 | A kind of hand-operated foot-pedal dual-purpose hydraulic pump |
| CN212958977U (en) * | 2020-05-28 | 2021-04-13 | 欧盾科技有限公司 | Hand-held double-tube single-connection electric hydraulic pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117404270A (en) * | 2023-10-26 | 2024-01-16 | 浙江荣鹏气动工具股份有限公司 | Portable electronic control pressure regulating and pressure releasing structure on spraying machine |
| CN117404270B (en) * | 2023-10-26 | 2024-05-14 | 浙江荣鹏气动工具股份有限公司 | Portable electronic control pressure regulating and pressure releasing structure on spraying machine |
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