Manual and electric integrated combined hydraulic oil pump

Abstract

The utility model discloses a manual and electric integrated combined hydraulic oil pump which comprises a framework oil way block, and a rotary valve hole area, a manual cavity, an oil suction oil way, a descending oil way, an ascending oil way and an oil way oil return opening are integrated in the framework oil way block. The oil suction oil way is connected with the rotary valve hole area through an oil suction opening one-way valve and connected with the electric oil groove area through an electric oil passing way, and the electric oil groove area is connected with an oil way oil return opening. A rotary valve assembly, a manual plunger and an electric pump assembly are arranged in the framework oil way block, the manual plunger is installed in the manual cavity, and the electric pump assembly is connected with the electric oil groove area and the descending oil way. The rotary valve assembly comprises a rotary valve, and the outer side wall of the rotary valve and the inner wall of a rotary valve hole area form an annular low-pressure area which is connected with an oil way oil return opening and an ascending oil way. The rotary valve is provided with a valve cavity, a manual cavity, an oil suction oil way, a descending oil way and a channel of an ascending oil way, by means of the integrated oil way structure, manual and electric oil way multiplexing is achieved, external oil pipes and leakage points are reduced, and the sealing reliability is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of engineering machinery hydraulic technology, more particularly to a hand-operated and electrically-operated integrated combined hydraulic pump. BACKGROUND

[0002] In the field of engineering machinery hydraulic technology, the cab lifting system usually adopts a hand-operated / electrically-operated dual-mode hydraulic pump as a power source. The traditional solution, as shown in CN208669735U, connects the hand-operated pump and the electrically-operated pump through a bracket bolt and realizes the coupling of the dual system with an external oil pipe. The high-pressure oil generated by the electrically-operated pump enters the plunger cavity of the hand-operated pump from the second oil path, pushes away the one-way valve, and is discharged through the oil outlet of the reversing valve. Although this solution also realizes the integration of the hand-operated and electrically-operated pumps, it has the following defects:

[0003] First, the high-pressure oil generated by the electrically-operated pump directly enters the plunger cavity of the hand-operated pump, which causes the pressure in the plunger cavity to change sharply and generates pressure fluctuations and impacts. Such pressure fluctuations and impacts can cause mechanical stress on the plunger, the sealing ring, the pump body, and other hand-operated components, which may cause wear or damage over a long period of use, thereby affecting the stability and reliability of the entire hydraulic system.

[0004] Second, the reversing valve has limited functions and does not have an integrated oil return function, i.e., only the oil outlet oil path is provided without an integrated oil return oil path. The oil return pipe of the jacking oil cylinder needs to be connected to the oil tank through an additional external oil pipe, which increases the complexity of the system and increases potential leakage points and fault points. SUMMARY

[0005] The utility model aims at the problems existing in the prior art and provides a hand-operated and electrically-operated integrated combined hydraulic pump, which realizes the reuse of the hand-operated and electrically-operated oil paths, cancels the external oil pipe, greatly reduces the leakage points through the integrated oil path structure, and significantly improves the sealing reliability.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] The application discloses a manual and electric integrated combined hydraulic oil pump, which comprises a framework oil path block, a rotating valve hole area, a manual cavity, an oil suction oil path, a descending oil path, an ascending oil path and an oil path return oil outlet which are arranged in the framework oil path block, wherein the oil suction oil path is connected with the rotating valve hole area through an oil suction port one-way valve and connected with an electric oil groove area through an electric oil path, the electric oil groove area is connected with the oil path return oil outlet, a rotating valve assembly, a manual plunger and an electric pump assembly are integrated in the framework oil path block, the manual plunger is movably arranged in the manual cavity, a low-pressure input end of the electric pump assembly is connected with the electric oil groove area, a high-pressure output end of the electric pump assembly is connected with the descending oil path, the rotating valve assembly comprises a rotating valve which is rotatably arranged in the rotating valve hole area, an annular low-pressure area is arranged between the outer wall of the rotating valve and the inner wall of the rotating valve hole area, one side of the annular low-pressure area is connected with the oil path return oil outlet, and the other side of the annular low-pressure area is connected with the ascending oil path, the rotating valve is provided with a valve cavity, a first cross channel, a second cross channel and a first channel which are connected with the valve cavity, the first cross channel is connected with the valve cavity through an oil discharge port one-way valve and used for connecting the manual cavity with the oil suction oil path, the second cross channel is used for connecting the descending oil path, and the first channel is used for connecting the ascending oil path.

[0008] Further, the electric pump assembly comprises an electric rotating valve block and a direct current motor which are coaxially arranged in the electric oil groove area, and power transmission is realized through an eccentric shaft; a closed C-shaped high-pressure ring is formed between the electric rotating valve block and the inner wall of the electric oil groove area; the C-shaped high-pressure ring is connected with a bridge shaft assembly, and the bridge shaft assembly is connected with the descending oil path.

[0009] Further, the eccentric shaft is connected with an eccentric disc, the eccentric disc is rotatably arranged in a middle circular hole of the electric rotating valve block, the electric rotating valve block comprises an oil passing cavity, the oil passing cavity is connected with the electric oil groove area through the oil suction copper filter screen, a plunger rod is arranged in the oil passing cavity, one end of the plunger rod penetrates through the oil passing cavity and extends into the circular hole and abuts against the eccentric disc, and a copper flat valve is arranged at the other end of the oil passing cavity and connected with the C-shaped high-pressure ring.

[0010] Further, a torque shaft is arranged in a rotating shaft hole of the framework oil path block, the torque shaft is connected with a cam assembly through a spline and is positioned by a limiting clamping shaft, a swing pin of the cam assembly is inserted into a waist-shaped groove of the manual plunger, the length direction of the waist-shaped groove and the movement direction of the manual plunger form an inclined angle, and the cam assembly drives the manual plunger to reciprocate in the manual cavity.

[0011] Further, one end of the rotating valve extends out of the framework oil path block and is connected with a rotating rod, and the oil path is switched by rotating the rotating rod; a limiting pin is arranged on the outer side of the framework oil path block and used for limiting the left-right rotating range of the rotating rod.

[0012] Further, the skeleton oil passage block is provided with a safety cavity, one side of the safety cavity is connected with the twentieth cross channel, and the other side is connected with a safety valve oil return port; the safety cavity is provided with an overflow valve assembly, the overflow valve assembly comprises the overflow steel ball arranged in front of the safety valve oil return port, a high-pressure spring abutting against the overflow steel ball, and a setting bolt for adjusting the compression amount of the high-pressure spring, and the setting bolt penetrates through the side wall of the skeleton oil passage block and is fixed through a sealing bolt.

[0013] Further, the oil suction oil passage, the descending oil passage and the ascending oil passage are respectively connected with an oil suction port quick plug connector, a descending port quick plug connector and an ascending port quick plug connector; the oil suction port quick plug connector, the descending port quick plug connector and the ascending port quick plug connector are provided with a sealing glue groove at the thread root, and the sealing glue groove is filled with thread fastening glue to form an axial sealing structure.

[0014] Further, the outer side of the skeleton oil passage block is provided with a circuit controller, the circuit controller is fixed on the motor support through a bolt, and the input end of the circuit controller is connected with a vehicle-mounted power supply and the output end is connected with a direct current motor, so as to control the start and stop of the direct current motor.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] By optimizing the oil passage design, the high-pressure oil generated by the electric pump is first introduced into the descending oil passage, part of the hydraulic oil passes through the descending oil passage and enters the upper cavity of the hydraulic oil cylinder through the descending port quick plug connector, part of the hydraulic oil passes through the descending oil passage and enters the valve cavity of the rotary valve, the hydraulic oil in the valve cavity enters the ascending oil passage through the first channel and enters the lower cavity of the hydraulic oil cylinder through the ascending port quick plug connector, and the hydraulic oil cylinder rises through the pressure difference between the upper and lower cavities; by adopting the oil passage design of the embodiment, when the high-pressure oil enters the valve cavity, the valve cavity and the first cross channel have the design of a one-way valve, so that the interference and damage of the high-pressure oil to the manual pump assembly can be avoided, the stability and reliability of the hydraulic system are improved, and the hydraulic drive mode is more efficient and can reduce energy loss.

[0017] The skeleton oil passage block is integrated with a rotary valve hole area, an electric oil tank area and a plurality of oil passages, the manual and electric oil passages are multiplexed through the cooperation of the rotary valve assembly and the electric rotary valve block, the external oil pipe is cancelled, the integrated oil passage structure greatly reduces the leakage points, and the sealing reliability is significantly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a combined hydraulic oil pump according to an embodiment of this application;

[0020] Figure 2 This is a structural schematic diagram of the main view (partial cross-sectional view of the electric oil tank area) of the combined hydraulic oil pump in one embodiment of this application;

[0021] Figure 3 For this application Figure 2 Cross-sectional view at point AA, where the rotary valve assembly is in a vertical position;

[0022] Figure 4 For this application Figure 2 Cross-sectional view at point AA, where the rotary valve assembly is in a horizontal position;

[0023] Figure 5 For this application Figure 3 A partially enlarged schematic diagram of the rotary valve;

[0024] Figure 6 For this application Figure 2 Cross-sectional view at point BB;

[0025] Figure 7 This is a schematic diagram of the structure of the electric rotary valve block in one embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the overflow valve assembly in one embodiment of this application;

[0027] Figure 9 This is a schematic diagram of the structure of the bridge axle assembly in one embodiment of this application;

[0028] Figure 10 This is a schematic diagram of the cam structure in one embodiment of this application;

[0029] Figure: 1, skeleton oil path block; 2, rotating rod; 3, suction port quick connector; 4, falling port quick connector; 5, rising port quick connector; 6, torque rotating shaft; 7, circuit controller; 8, DC motor; 9, cam assembly; 10, limit card; 12, manual plunger; 13, hole Y-shaped sealing ring; 14, rotating valve assembly; 15, suction port check valve; 16, overflow valve assembly; 17, rotating valve; 18a, first cross passage; 18b, second cross passage; 18c, first passage; 20, discharge port check valve; 21, spring; 22, sealing steel ball; 23, limit bolt; 24, overflow steel ball; 25, high pressure spring; 26, setting bolt; 27, sealing bolt; 28, C-shaped high pressure ring; 29, hydraulic oil high pressure area; 30, plunger rod; 31, suction copper filter screen; 32, eccentric shaft; 33, eccentric disc; 34, overbridge shaft assembly; 35, overbridge shaft; 36, sealing ring; 37, electric rotating valve block; 38, limit pin; 39, electric oil tank area; 41, manual cavity; 42, valve cavity; 43, safety cavity; 44, suction oil path; 45, falling oil path; 46, rising oil path; 47, cam; 48, swing pin; 49, oil passing cavity; 50, copper flat valve; 51, electric oil passing path; 52, annular low pressure area; 53, oil path return port; 54, safety valve return port. DETAILED DESCRIPTION

[0030] The technical solutions of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0033] In the description of the utility model, it also needs to be explained that, unless there is explicit provision and limitation, the terms "set", "install", "connect" and "connect" should be understood broadly, for example, it can be fixed connection, or it can be detachable connection, or integral connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0034] In the field of engineering machinery hydraulic, the cab lifting system mostly uses manual / electric dual-mode hydraulic pump as power source. The traditional solution such as CN208669735U shows that the manual pump and the electric pump are connected by support bolts, and the double-system coupling is realized by cooperating with external oil pipe. Among them, the high-pressure oil generated by the electric pump enters the plunger cavity of the manual pump from the second oil way, pushes away the one-way valve, and is discharged through the oil outlet of the reversing valve. Although this scheme also realizes the integration of manual and electric pumps, it has the following defects:

[0035] Firstly, the high-pressure oil generated by the electric pump directly enters the plunger cavity of the manual pump, which will cause the pressure in the plunger cavity to change sharply, resulting in pressure fluctuation and impact. This pressure fluctuation and impact will cause mechanical stress to the plunger, sealing ring, pump body and other manual components, which may cause wear or damage after long-term use, thereby affecting the stability and reliability of the entire hydraulic system.

[0036] Secondly, the reversing valve has limited functions and does not integrate the oil return function, that is, only the oil outlet oil way is provided, and the oil return oil way is not integrated, so the oil return pipe of the jacking oil cylinder needs to be connected to the oil tank by an additional external oil pipe. The additional external oil pipe increases the complexity of the system, increases the potential leakage points and fault points.

[0037] In view of the above technical problems, such as Figures 1 to 10As shown, the embodiment of the present application provides a manual and electric integrated combined hydraulic oil pump, comprising: a framework oil path block 1, which is internally provided with a rotary valve hole area, and a manual cavity 41, an oil suction oil path 44, a descending oil path 45, an ascending oil path 46, and an oil path return oil port 53 connected with the rotary valve hole area; the oil suction oil path 44 is connected with the rotary valve hole area through an oil suction port one-way valve 15, and is connected with an electric oil groove area 39 through an electric oil path 51; the electric oil groove area 39 is connected with the oil path return oil port 53; the framework oil path block 1 is internally integrated with a rotary valve assembly 14, a manual plunger 12, and an electric pump assembly; the manual plunger 12 is movably installed in the manual cavity 41; a low-pressure input end of the electric pump assembly is connected with the electric oil groove area 39, and a high-pressure output end is connected with the descending oil path 45; the rotary valve assembly 14 comprises a rotary valve 17, which is rotatably assembled in the rotary valve hole area, and an annular low-pressure area 52 is arranged between the outer side wall of the rotary valve 17 and the inner wall of the rotary valve hole area; one side of the annular low-pressure area 52 is connected with the oil path return oil port 53, and the other side is connected with the ascending oil path 46; the rotary valve 17 is provided with a valve cavity 42, and a first cross passage 18a, a second cross passage 18b, and a first passage 18c connected with the valve cavity 42; the first cross passage 18a is connected with the valve cavity through an oil discharge port one-way valve 20, and is used for connecting the manual cavity 41 with the oil suction oil path 44; the second cross passage 18b is used for connecting the descending oil path 45; and the first passage 18c is used for connecting the ascending oil path 46.

[0038] The electric pump assembly comprises an electric rotary valve block 37 coaxially arranged in the electric oil groove area 39 and a direct current motor 8, and the two are connected through an eccentric shaft 32 to realize power transmission; a C-shaped high-pressure ring 28 is formed between the electric rotary valve block 37 and the inner wall of the electric oil groove area 39; the C-shaped high-pressure ring 28 is connected with a bridge shaft assembly 34, and the bridge shaft assembly 34 is connected with the descending oil path 45.

[0039] The above embodiment realizes seamless switching between manual and electric modes through the cooperation of the oil path design of the integrated framework oil path block 1 and the rotary valve assembly 14 and the electric rotary valve block 37. The specific working process is as follows:

[0040] Manual part lifting process: the handle of rotary valve assembly 14 is placed in the vertical direction, the rotary valve assembly 14 is in the lifting position, the manual tool torque shaft 6 is manually moved, the manual plunger 12 is driven up and down by the swing pin 48 on the cam assembly 9, when the manual plunger 12 runs up, due to the sealing effect of the Y-shaped sealing ring 13, a negative pressure is formed in the manual cavity 41, hydraulic oil enters the oil suction oil way 44 through the oil suction quick connector 3, opens the oil suction one-way valve 15, and enters the manual cavity 41; when the manual plunger 12 runs down, the Y-shaped sealing ring 13 compresses the hydraulic oil, the hydraulic oil in the manual cavity 41 compresses the spring 21, opens the oil discharge one-way valve 20, and enters the valve cavity 42 of the rotary valve assembly 14; part of the hydraulic oil enters the descending oil way 45 through the lower left second cross passage 18b, flows to the descending oil inlet quick connector 4, enters the upper cavity of the hydraulic oil cylinder, and part of the hydraulic oil enters the ascending oil way 46 through the lower right first passage 18c, flows to the ascending oil inlet quick connector 5, enters the lower cavity of the hydraulic oil cylinder, and the hydraulic oil cylinder rises through the pressure difference between the upper and lower cavities.

[0041] Electric part lifting process: the handle of rotary valve assembly 14 is placed in the vertical direction, the rotary valve assembly 14 is in the lifting position, the input end of the circuit controller 7 is connected with the vehicle-mounted power supply, and the output end is connected with the direct current motor 8; after starting the circuit controller 7, the direct current motor 8 starts to rotate and work; the direct current motor 8 rotates to drive the eccentric shaft 32 to rotate synchronously, the eccentric disc 33 drives the plunger rod 30 to run in the radial direction to the center in the oil passing cavity 49, a negative pressure is formed in the oil passing cavity 49, hydraulic oil enters the oil suction oil way 44 through the oil suction quick connector 3, enters the electric oil passing way 51, and flows into and fills the oil passing cavity 49 after being filtered by the oil suction copper filter screen; the eccentric disc 33 drives the plunger rod 30 to run in the radial direction to the outside in the oil passing cavity 49, and compresses the hydraulic oil in the oil passing cavity 49 to form high pressure to push away the copper flat valve 50, the high pressure hydraulic oil enters the hydraulic oil high pressure area 29 closed by the C-shaped high pressure ring 28, flows into the bridge shaft assembly 34, and the bridge shaft assembly 34 is communicated with the descending oil way 45; part of the hydraulic oil descends through the descending oil way 45, enters the upper cavity of the hydraulic oil cylinder through the descending oil inlet quick connector 4, part of the hydraulic oil ascends through the descending oil way 45, enters the valve cavity 42 of the rotary valve assembly 14 through the lower left second cross passage 18b, because the valve cavity 42 is blocked by the oil discharge one-way valve 20 and the sealing steel ball 22 on the left and right sides, the hydraulic oil in the valve cavity 42 enters the ascending oil way 46 through the lower right first passage 18c, enters the lower cavity of the hydraulic oil cylinder through the ascending oil inlet quick connector 5, and the hydraulic oil cylinder rises through the pressure difference between the upper and lower cavities.

[0042] Manual part descending process: the handle of the rotary valve assembly 14 is placed in the horizontal direction, the rotary valve assembly 14 is in the descending position, the front end oil path direction during the up-and-down operation of the manual plunger 12 is consistent with the manual part lifting process, the high-pressure hydraulic oil in the manual cavity 41 compresses the spring 21 to open the oil discharge one-way valve 20 into the valve cavity 42 of the rotary valve assembly 14; part of the hydraulic oil enters the descending oil path 45 through the left lower second cross passage 18b and flows to the descending port quick plug connector 4 into the hydraulic cylinder upper cavity, the rear part of the valve cavity 42 is sealed by the sealing steel ball 22; the hydraulic cylinder upper cavity is lowered under the action of pressure, extruding the hydraulic oil in the hydraulic cylinder lower cavity, the hydraulic oil in the hydraulic cylinder lower cavity enters the ascending oil path 46 through the ascending port quick plug connector 5, flows to the annular low-pressure area 52, and enters the electric oil groove area 39 through the oil return port 53 in communication with the annular low-pressure area 52, flows to the electric oil path 51, enters the oil suction port quick plug connector 3, and returns to the external oil tank to form a cycle.

[0043] Electric part descending process: the handle of the rotary valve assembly 14 is placed in the horizontal direction, the rotary valve assembly 14 is in the descending position, the electric part working process is consistent with the electric part ascending process, the high-pressure hydraulic oil enters the C-shaped high-pressure ring 28 to flow into the bridge shaft assembly 34, the bridge shaft assembly 34 is in communication with the descending oil path 45; part of the hydraulic oil enters the descending oil path 45 through the left lower second cross passage 18b and flows to the descending port quick plug connector 4 into the hydraulic cylinder upper cavity, the rear part of the valve cavity 42 is sealed by the sealing steel ball 22; the hydraulic cylinder upper cavity is lowered under the action of pressure, extruding the hydraulic oil in the hydraulic cylinder lower cavity, the hydraulic oil in the hydraulic cylinder lower cavity enters the ascending oil path 46 through the ascending port quick plug connector 5, flows to the annular low-pressure area 52, and enters the electric oil groove area 39 through the oil return port 53 in communication with the annular low-pressure area 52, flows to the electric oil path 51, enters the oil suction port quick plug connector 3, and returns to the external oil tank to form a cycle.

[0044] The embodiment optimizes the oil path design, so that the high-pressure oil generated by the electric pump is first introduced into the descending oil path 45, part of the hydraulic oil flows downward through the descending oil path 45, enters the hydraulic cylinder upper cavity through the descending port quick plug connector 4, part of the hydraulic oil flows upward through the descending oil path 45 into the valve cavity 42 of the rotary valve 17, the hydraulic oil in the valve cavity 42 enters the ascending oil path 46 through the first passage 18c, enters the hydraulic cylinder lower cavity through the ascending port quick plug connector 5, and the hydraulic cylinder rises through the pressure difference between the upper and lower cavities. When the high-pressure oil enters the valve cavity 42, the valve cavity 42 and the first cross passage 18a have a one-way valve design, so that the high-pressure oil does not interfere with and damage the manual pump assembly, improving the stability and reliability of the hydraulic system. At the same time, the hydraulic drive method is more efficient, which can reduce energy loss.

[0045] The embodiment integrates the rotary valve assembly 14, the electric rotary valve block 37, the direct current motor 8, and the overflow valve assembly 16 components through the skeleton oil way block 1, embeds all oil ways and moving parts in the skeleton oil way block, forms an integrated skeleton structure, and realizes high integration and functional modularization of the oil way.

[0046] The skeleton oil way block 1 integrates the rotary valve hole area, the electric oil groove area 39, and a plurality of oil ways, cooperates the rotary valve assembly 14 and the electric rotary valve block 37, realizes manual and electric oil way multiplexing, cancels the external oil pipe, and greatly reduces the leakage points of the integrated oil way structure, and significantly improves the sealing reliability.

[0047] As shown in Figure 2 , 7 , in some embodiments, the eccentric shaft 32 is connected with the eccentric disc 33, the eccentric disc 33 is rotatably arranged in the middle circular hole of the electric rotary valve block 37; the electric rotary valve block 37 includes an oil passing cavity 49, the oil passing cavity 49 is connected with the electric oil groove area 39 through the oil suction copper filter screen 31; the oil passing cavity 49 is provided with a plunger rod 30, one end of the plunger rod 30 extends into the circular hole through the oil passing cavity 49 and abuts against the eccentric disc 33; the other end of the oil passing cavity 49 is provided with a copper flat valve 50, the copper flat valve 50 is connected with the C-shaped high-pressure ring 28.

[0048] One end of the plunger rod 30 extends into the circular hole and abuts against the eccentric disc 33, and does radial reciprocating motion in the oil passing cavity 49 along with the rotation of the eccentric disc 33. When the plunger rod 30 moves radially inward, the volume of the oil passing cavity 49 increases to form negative pressure, and the hydraulic oil in the electric oil groove area 39 enters the oil passing cavity 49 after being filtered through the oil suction copper filter screen 31. When the plunger rod 30 moves radially outward, the eccentric disc 33 pushes the plunger rod 30 to compress the oil liquid in the oil passing cavity 49, forms high-pressure oil flow, opens the copper flat valve 50 to enter the closed hydraulic oil high-pressure area 29 of the C-shaped high-pressure ring 28, and the high-pressure oil enters the bridge shaft assembly 34 through the C-shaped high-pressure ring 28, is branched to the downward oil way 45 and the valve cavity 42 of the rotary valve assembly 14, and drives the oil cylinder to act.

[0049] As shown in Figure 2 , 6 , 10, in some embodiments, the torque shaft 6 is arranged in the rotating shaft hole of the skeleton oil way block 1, the torque shaft 6 is connected with the cam assembly 9 through the spline, and is axially positioned by the limiting clamp 10; the swing pin 48 of the cam assembly 9 is inserted into the waist-shaped groove of the manual plunger 12, the length direction of the waist-shaped groove forms an inclination angle with the movement direction of the manual plunger 12; the cam assembly 9 drives the manual plunger 12 to reciprocate in the manual cavity.

[0050] When the torque rotating shaft 6 rotates, the cam assembly 9 swings, and the swing pin 48 slides along the inclined track of the waist-shaped groove, converting the rotary motion into the linear reciprocating motion of the manual plunger 12 in the manual cavity 41. When the manual plunger 12 goes up, a negative pressure is formed in the manual cavity 41, and the external oil liquid pushes open the oil suction one-way valve 15 through the oil suction oil way 44, enters the manual cavity 41 through the first cross passage 18a. When the manual plunger 12 goes down, the hole compresses the oil liquid, pushes open the oil discharge one-way valve 20 through the first cross passage 18a to enter the valve cavity 42, and drives the oil cylinder to act.

[0051] As shown in Figure 1 , in some embodiments, one end of the rotary valve 17 protrudes from the framework oil way block 1 and is connected with the rotary rod 2, and the oil way is switched by rotating the rotary rod 2; the outer side of the framework oil way block 1 is provided with a limiting pin 38 for limiting the left and right turning range of the rotary rod 2.

[0052] The operator manually rotates the rotary rod 2 left and right, drives the rotary valve 17 to rotate synchronously in the rotary valve hole area, and switches the conduction state of the oil suction oil way 44, the descending oil way 45 and the ascending oil way 46 through the orientation change of the first cross passage 18a, the second cross passage 18b and the first passage 18c in the valve body. When the rotary rod 2 turns to the vertical direction, the rod body side surface abuts against the left side of the limiting pin 38 to limit further left turning, the second cross passage 18b of the valve cavity 42 is in communication with the descending oil way 45, and the first passage of the valve cavity 42 is in communication with the ascending oil way 46. When the rotary rod 2 turns to the horizontal direction, the other side of the rod body abuts against the right side of the limiting pin 38 to prevent excessive right turning, the second cross passage 18b of the valve cavity 42 is in communication with the descending oil way 45 and the oil return passage, and the first passage 18c of the valve cavity 42 is misaligned with the ascending oil way 46.

[0053] As shown in Figure 3 , 4 , 5, in some embodiments, the framework oil way block 1 is provided with a safety cavity 43, one side of the safety cavity 43 is connected with the second cross passage 18b, and the other side is connected with a safety valve oil return port 54; the safety cavity is provided with an overflow valve assembly 16, which includes an overflow steel ball 24 arranged in front of the safety valve oil return port 54, a high-pressure spring 25 abutting against the overflow steel ball 24, and an adjusting bolt 26 adjusting the compression amount of the high-pressure spring 25, the adjusting bolt 26 penetrates the side wall of the framework oil way block 1 and is fixed by a sealing bolt 27.

[0054] When the system pressure exceeds the set threshold, the high-pressure oil enters the safety chamber 43 through the twentieth cross passage 18b, pushes the overflow steel ball 24 to overcome the pre-tightening force of the high-pressure spring 25, and opens the safety valve oil return port 54. The overpressure oil flows back to the electric oil groove area 39 through the safety valve oil return port 54, and then flows to the oil suction oil path 44 from the electric oil groove area 39 through the electric oil passage 51, and then flows to the external oil tank through the oil suction port quick connector 3, thereby rapidly reducing the system pressure and avoiding component damage.

[0055] As shown in Figure 1 , 3 , 4, in some embodiments, the oil suction oil path 44, the descending oil path 45, and the ascending oil path 46 are respectively connected to the oil suction port quick connector 3, the descending port quick connector 4, and the ascending port quick connector 5; the threaded root of the oil suction port quick connector 3, the descending port quick connector 4, and the ascending port quick connector 5 is provided with a sealing glue groove, and the sealing glue groove is filled with threaded fastening glue to form an axial sealing structure.

[0056] The oil suction oil path 44, the descending oil path 45, and the ascending oil path 46 are respectively connected to the oil suction port quick connector 3, the descending port quick connector 4, and the ascending port quick connector 5 through the oil suction port quick connector 3, the descending port quick connector 4, and the ascending port quick connector 5. When the quick connector is screwed into the corresponding interface of the framework oil path block 1, the threaded fastening glue is solidified in the threaded gap to form a dense sealing layer in the axial direction, thereby preventing oil leakage along the threaded gap. The plug-in sealing of the quick connector and the axial sealing glue layer of the threaded root work together to adapt to high-pressure and vibration working conditions, thereby significantly reducing the risk of leakage.

[0057] As shown in Figure 1 , in some embodiments, the outer side of the framework oil path block 1 is provided with a circuit controller 7, the circuit controller 7 is fixed to the motor support through bolts, and the input end of the circuit controller 7 is connected to the vehicle-mounted power supply and the output end is connected to the direct current motor 8, which is used to control the start and stop of the direct current motor 8.

[0058] The operator starts the circuit controller through an external switch or a remote control signal, and the internal circuit controls the start and stop and the rotating speed of the direct current motor 8. After the direct current motor 8 is started, the eccentric shaft 32 is driven to rotate, thereby driving the electric rotary valve block 37 and the plunger rod 30 to move, and oil compression and oil path switching are completed.

[0059] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A manually electrically integrated combination hydraulic oil pump characterized by, Comprise: The skeleton oil path block (1) is internally provided with a rotary valve hole area, and a manual cavity (41), an oil suction oil path (44), a descending oil path (45), an ascending oil path (46), and an oil path return port (53) connected with the rotary valve hole area; the oil suction oil path (44) is connected with the rotary valve hole area through an oil suction port one-way valve (15), and is connected with an electric oil groove area (39) through an electric oil path (51); the electric oil groove area (39) is connected with the oil path return port (53); The interior of the skeleton oil path block (1) is integrated with a rotary valve assembly (14), a manual plunger (12), and an electric pump assembly; the manual plunger (12) is movably installed in the manual cavity (41); the low-pressure input end of the electric pump assembly is connected with the electric oil groove area (39), and the high-pressure output end is connected with the descending oil path (45); The rotary valve assembly (14) comprises a rotary valve (17) which is rotatably assembled in the rotary valve hole, and an annular low-pressure area (52) is arranged between the outer side wall of the rotary valve (17) and the inner wall of the rotary valve hole area; one side of the annular low-pressure area (52) is connected with the oil path return port (53), and the other side is connected with the ascending oil path (46); The rotary valve (17) is provided with a valve cavity (42), and a first cross channel (18a), a second cross channel (18b), and a first channel (18c) connected with the valve cavity (42); the first cross channel (18a) is connected with the valve cavity (42) through a discharge port one-way valve (20), and is used for connecting the manual cavity (41) with the oil suction oil path (44); the second cross channel (18b) is used for connecting the descending oil path (45); and the first channel (18c) is used for connecting the ascending oil path (46).

2. The hand-hydraulic electric integrated combination hydraulic pump according to claim 1, wherein, The electric pump assembly comprises an electric rotary valve block (37) and a direct current motor (8) coaxially arranged in the electric oil groove area (39), and power transmission is realized through an eccentric shaft (32); a closed C-shaped high-pressure ring (28) is formed between the electric rotary valve block (37) and the inner wall of the electric oil groove area (39); the C-shaped high-pressure ring (28) is connected with a bridge shaft assembly (34), and the bridge shaft assembly (34) is connected with the descending oil path (45).

3. The hand-hydraulic electric integrated combination hydraulic pump according to claim 2, wherein, The eccentric shaft (32) is connected with an eccentric disc (33) which is rotatably arranged in a middle circular hole of the electric rotary valve block (37); the electric rotary valve block (37) comprises an oil passing cavity (49) which is connected with the electric oil groove area (39) through the oil suction copper filter screen (31); a plunger rod (30) is arranged in the oil passing cavity (49), one end of the plunger rod (30) penetrates the oil passing cavity (49) and extends into the circular hole, and abuts against the eccentric disc (33); the other end of the oil passing cavity (49) is provided with a copper flat valve (50) which is connected with the C-shaped high-pressure ring (28).

4. The hand-hydraulic electric integrated combination hydraulic pump according to claim 1, wherein, The torque shaft (6) is arranged in the rotation shaft hole of the skeleton oil passage block (1), the torque shaft (6) is connected with the cam assembly (9) through the spline, and is axially positioned by the limiting clamp (10); the swing pin (48) of the cam assembly (9) is inserted into the waist-shaped groove of the manual plunger (12), the length direction of the waist-shaped groove forms an inclined angle with the movement direction of the manual plunger (12); the cam assembly (9) drives the manual plunger (12) to reciprocate in the manual cavity (41).

5. The hand power and electric integrated combination hydraulic pump according to claim 1, wherein, One end of the rotary valve (17) extends out of the skeleton oil passage block (1) and is connected with the rotary rod (2), and the oil passage is switched by rotating the rotary rod (2); the limiting pin (38) is arranged outside the skeleton oil passage block (1) and is used for limiting the left-right turning range of the rotary rod (2).

6. The hand power and electric integrated combination hydraulic pump according to claim 1, wherein, The safety cavity (43) is arranged in the skeleton oil passage block (1), one side of the safety cavity (43) is connected with the twentieth cross passage (18b), and the other side is connected with the safety valve oil return port (54); the overflow valve assembly (16) is arranged in the safety cavity, the overflow valve assembly (16) comprises the overflow steel ball (24) arranged in front of the safety valve oil return port (54), the high-pressure spring (25) abutting against the overflow steel ball (24) and the adjusting bolt (26) adjusting the compression amount of the high-pressure spring (25), and the adjusting bolt (26) penetrates the side wall of the skeleton oil passage block (1) and is fixed by the sealing bolt (27).

7. The hand power and electric integrated combination hydraulic pump according to claim 1, wherein, The oil suction oil passage (44), the descending oil passage (45) and the ascending oil passage (46) are respectively connected with the oil suction quick connector (3), the descending quick connector (4) and the ascending quick connector (5); the thread root of the oil suction quick connector (3), the descending quick connector (4) and the ascending quick connector (5) is provided with a sealing glue groove, and the sealing glue groove is filled with thread fastening glue to form an axial sealing structure.

8. The hand power and electric integrated combination hydraulic pump according to claim 1, wherein, The circuit controller (7) is arranged outside the skeleton oil passage block (1), the circuit controller (7) is fixed on the motor support by bolts, the input end of the circuit controller (7) is connected with the vehicle-mounted power supply, and the output end is connected with the direct-current motor (8), so as to control the start and stop of the direct-current motor (8).

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