Double-high-pressure electric hydraulic pump

Abstract

The utility model discloses a double-high-pressure electric hydraulic pump which is characterized by further comprising a driving cavity arranged on a valve block, a plurality of piston cavities arranged on the valve block and communicated with the driving cavity, high-pressure pump core structures arranged in the piston cavities, oil outlet cavities communicated with the piston cavities and one-way valves arranged in the oil outlet cavities. The high-pressure pump core structure comprises a plug installed in the piston cavity, a pump body, a pump core arranged in the piston cavity, and a spring arranged on the pump core and used for driving the pump core to reset, wherein one end of the pump core penetrates through the pump body. Through the arrangement of the double-high-pressure pump core structure, when the oil cylinder is jacked, the lifting requirement can be rapidly and effectively met under the no-load and load conditions, meanwhile, through the arrangement of the motor, the eccentric wheel is electrically driven to rotate, and the lifting efficiency is improved. The eccentric wheel forms thrust on the pump core in the high-pressure pump core structure in the rotating process so as to pump oil, high efficiency is achieved, manual pressing by operators is not needed, and the labor intensity is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric hydraulic pump, concretely points to a double high pressure electric hydraulic pump. BACKGROUND

[0002] The structure of the conventional manual double-pump core hydraulic pump is basically composed of a high-pressure pump core and a low-pressure pump core, which has the advantage of effectively reducing the handle force during load, so that the operator is not very tired during operation, but the disadvantage is that the structure requires the operator to operate repeatedly several times to meet the requirements, resulting in slow jacking speed, low efficiency and high labor intensity during load jacking. Therefore, a double high pressure electric hydraulic pump is proposed. SUMMARY

[0003] The utility model discloses a double high pressure electric hydraulic pump to solve the above problems.

[0004] In order to achieve the above purpose, the utility model provides a double high pressure electric hydraulic pump, which comprises a valve block, an oil cylinder installed on the valve block, a drain valve installed on the valve block, a safety valve and a motor installed on the valve block, characterized in that it further comprises a drive cavity provided on the valve block, a plurality of piston cavities provided on the valve block and communicated with the drive cavity, a high-pressure pump core structure provided in the piston cavity, an oil outlet cavity communicated with the piston cavity, and a one-way valve provided in the oil outlet cavity, wherein the high-pressure pump core structure comprises a plug installed in the piston cavity, a pump body, a pump core provided in the piston cavity and penetrating through the pump body at one end, and a spring provided on the pump core for driving the pump core to reset; a high-pressure oil cavity is formed among the pump core, the pump body and the plug, and the drive cavity is provided with an eccentric wheel in transmission connection with the motor and in contact with one end of the pump core to push the pump core to act.

[0005] Further preferably, the oil outlet cavity is communicated with the oil cylinder; the valve block is provided with an oil suction cavity communicated with the high-pressure oil cavity, and the oil suction cavity is provided with a one-way valve.

[0006] Further preferably, the drain valve comprises a back oil cavity provided in the valve block and communicated with the oil cylinder for back oil, a plug installed in the back oil cavity, a valve seat provided in the valve block, a drain valve core movably installed in the back oil cavity, a spring two provided between the drain valve core and the plug, a drive rod slidably installed in the back oil cavity, a thimble slidably installed on the drain valve core and in contact with one end of the drive rod, and a spring three installed between the drive rod and the valve seat.

[0007] Further preferably, the drain valve core comprises a drain valve core one and a drain valve core two movably provided in the drain valve core one; the thimble is slidably installed in the drain valve core one and in contact with one end of the drain valve core two; a spring four is further installed between the drain valve core one and the drive rod.

[0008] Further preferably, the oil return groove is arranged on the ejector pin.

[0009] Further preferably, the device further comprises a connecting rod movably arranged at one end on the valve block for driving the oil drain valve to act, and a driver movably arranged on the valve block and connected with the other end of the connecting rod; the connecting rod is provided with a slope surface in contact with the driver.

[0010] Further preferably, the driver is a push-pull electromagnet.

[0011] Further preferably, the device further comprises a holding electromagnet arranged on the connecting rod for holding the position of the connecting rod.

[0012] The utility model discloses a beneficial effect: the utility model through the setting of double high pressure pump core structure, when the oil cylinder is jacked, can be in the condition of no load and load all can rapidly and effectively reach the promotion requirement, adopts the setting of motor simultaneously, rotates through the electric drive eccentric wheel, and the eccentric wheel forms the thrust of pump core in the high pressure pump core structure in the process of rotating and carries out the oiling, and the high efficiency does not need the manual pressure of operating personnel, and the labor intensity is low. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure schematic diagram of the utility model;

[0014] Figure 2 It is the local section structure schematic diagram of the utility model;

[0015] Figure 3 It is the section structure schematic diagram of A-A place in the utility model;

[0016] Figure 4 It is the local section structure schematic diagram of the utility model;

[0017] Figure 5 It is the section structure schematic diagram of the oil drain valve in the utility model;

[0018] Figure 6 It is the local enlarged structure schematic diagram of the utility model Figure 5 .

[0019] Legend: 1, valve block; 11, piston cavity; 12, oil outlet cavity; 13, one-way valve; 14, oil suction cavity; 2, oil cylinder; 3, oil drain valve; 31, oil return cavity; 32, valve seat; 33, oil drain valve core; 34, spring two; 35, drive rod; 36, thimble; 37, spring three; 4, safety valve; 5, motor; 51, drive cavity; 52, eccentric wheel; 6, plug; 61, pump body; 62, pump core; 63, spring; 64, high-pressure oil cavity; 7, oil drain valve core one; 71, oil drain valve core two; 72, spring four; 73, oil return groove; 8, connecting rod; 81, driver; 82, inclined surface; 83, holding electromagnet. DETAILED DESCRIPTION

[0020] The double high-pressure electric hydraulic pump described in the utility model will be further explained below in combination with the drawings.

[0021] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications will also change accordingly.

[0022] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly; for example, "fixation" can be fixed connection, or can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0023] Referring to Figures 1-6 A double high-pressure electric hydraulic pump is shown in the drawings, which comprises a valve block 1, an oil cylinder 2 mounted on the valve block 1, an oil drain valve 3 mounted on the valve block 1, a safety valve 4 and a motor 5 mounted on the valve block 1; characterized in that it further comprises a drive cavity 51 arranged on the valve block 1, a plurality of piston cavities 11 arranged on the valve block 1 and in communication with the drive cavity 51, a high-pressure pump core structure arranged in the piston cavity 11, an oil outlet cavity 12 in communication with the piston cavity 11 and a one-way valve 13 arranged in the oil outlet cavity 12, the high-pressure pump core structure comprising a plug 6 mounted in the piston cavity 11, a pump body 61, a pump core 62 arranged in the piston cavity 11 and passing through the pump body 61 at one end, and a spring 63 arranged on the pump core 62 and used for driving the pump core 62 to reset; the pump core 62, the pump body 61 and the plug 6 form a high-pressure oil cavity 64 therebetween, the drive cavity 51 is provided with an eccentric wheel 52 in transmission connection with the motor 5 and in contact with one end of the pump core 62 to push the pump core 62 to act;

[0024] The utility model discloses through the setting of several high pressure pump core 62 structure, several high pressure pump core 62 structure is double high pressure pump core 62 structure, through double high pressure pump core 62 structure to the oil cylinder 2 is hit oil jacking, can be in the condition of no load and load all can rapidly effectively reach the promotion requirement, simultaneously adopt the setting of motor 5, through the rotation of electric drive eccentric wheel 52, the eccentric wheel 52 forms the thrust to the pump core 62 in high pressure pump core 62 structure in the process of rotation and carries out the oiling, and high -efficient and need not the manual pressure of operating personnel, and the labor intensity is low.

[0025] In one embodiment, the oil outlet chamber 12 is in communication with the oil cylinder 2, and the oil outlet chamber 12 is in communication with the piston chamber in the oil cylinder 2 for slidingly mounting the piston; the oil outlet chamber 12 is in communication with the oil cylinder 2; the valve block 1 is provided with an oil suction chamber 14 in communication with the high-pressure oil chamber 64, and the oil suction chamber 14 is provided with a one-way valve 13; the oil suction chamber 14 is in communication with the oil chamber of the oil cylinder 2.

[0026] In one embodiment, the oil outlet valve 3 comprises a return oil chamber 31 provided in the valve block 1 and in communication with the oil cylinder 2 for returning oil, a plug 6 mounted in the return oil chamber 31, a valve seat 32 provided in the valve block 1, an oil outlet valve core 33 movably mounted in the return oil chamber 31, a spring 34 provided between the oil outlet valve core 33 and the plug 6, a drive rod 35 slidingly mounted in the return oil chamber 31, a plunger 36 slidingly mounted on the oil outlet valve core 33 and in contact with one end of the drive rod 35, and a spring 37 mounted between the drive rod 35 and the valve seat 32; the return oil chamber 31 is in communication with the piston chamber and the oil chamber in the oil cylinder;

[0027] The oil outlet valve core 33 comprises an oil outlet valve core 7 and an oil outlet valve core 71 movably provided in the oil outlet valve core 7; the plunger 36 is slidingly mounted in the oil outlet valve core 7 and in contact with one end of the oil outlet valve core 71; a spring 72 is further mounted between the oil outlet valve core 7 and the drive rod 35;

[0028] Further comprising a return groove 73 provided on the plunger 36;

[0029] When the oil is discharged: by pushing the drive rod 35 to move downward, the drive rod 35 extrudes the spring 37 and the spring 72 during the downward movement, the drive rod 35 contacts the plunger 36 and applies a downward pushing force to it during the downward movement, and the plunger 36 pushes the oil outlet valve core 71 to move downward, at this time, the passage between the oil outlet valve core 71 and the oil outlet valve core 7 is opened, and preliminary oil return and pressure relief are performed, and the drive rod 35 contacts the oil outlet valve core 7 and pushes the oil outlet valve core 7 to move downward during the continuous downward movement, and the passage between the oil outlet valve core 7 and the valve seat 32 is opened, and rapid oil return is performed.

[0030] In one embodiment, further comprising a connecting rod 8 movably mounted on the valve block 1 for driving the oil drain valve 3 to act, and a driver 81 movably mounted on the valve block 1 and connected with the other end of the connecting rod 8; the connecting rod 8 is provided with a slope 82 in contact with the driving rod 35;

[0031] The driver 81 is a push-pull electromagnet;

[0032] When the oil drain valve 3 is driven to open, the push-pull electromagnet is energized to push the connecting rod 8 to rotate around the connecting point between the valve block 1 and the connecting rod 8 as the base point, and the connecting rod 8 extrudes the driving rod 35 through the slope 82 during the rotation, thereby pushing the driving rod 35 to act to return oil.

[0033] In one embodiment, further comprising a holding electromagnet 83 mounted on the connecting rod 8 for holding the position of the connecting rod 8; after the connecting rod 8 is pushed to act by the push-pull electromagnet, the holding electromagnet 83 is energized to magnetically attract the valve block 1, thereby fixing the position of the connecting rod 8.

[0034] When the oil is supplied through the double high-pressure pump core 62 structure, the motor 5 drives the eccentric wheel 52 to rotate, the eccentric wheel 52 extrudes the pump core 62 during the rotation, the pump core 62 extrudes the oil in the high-pressure oil chamber 64 after being pushed by the eccentric wheel 52, pushes the oil to open the one-way valve 13 in the oil chamber 12, and then punches the oil into the piston chamber of the oil cylinder 2 through the oil circuit, thereby pushing the piston to act, and the eccentric wheel 52 continuously extrudes the two pump cores 62 during the continuous rotation to realize rapid oil supply during load.

[0035] The protection scope of the utility model is not limited to the above embodiments and their transformations. The routine modifications and replacements made by the skilled in the art based on the content of the embodiments all belong to the protection scope of the utility model.

Claims

1. A double high-pressure electric hydraulic pump, comprising a valve block (1), a cylinder (2) mounted on the valve block (1), a drain valve (3) mounted on the valve block (1), a safety valve (4), and a motor (5) mounted on the valve block (1); characterized in that The valve block (1) is provided with a driving cavity (51), a plurality of piston cavities (11) in communication with the driving cavity (51), a high-pressure pump core (62) structure arranged in the piston cavity (11), an oil outlet cavity (12) in communication with the piston cavity (11), and a one-way valve (13) arranged in the oil outlet cavity (12). The high-pressure pump core (62) structure comprises a plug (6) arranged in the piston cavity (11), a pump body (61), a pump core (62) arranged in the piston cavity (11) and penetrating through the pump body (61), and a spring (63) arranged on the pump core (62) and used for driving the pump core (62) to reset. A high-pressure oil cavity (64) is formed among the pump core (62), the pump body (61) and the plug (6). The driving cavity (51) is provided with an eccentric wheel (52) in transmission connection with a motor (5) and in contact with one end of the pump core (62) to push the pump core (62) to act.

2. A dual high voltage electric hydraulic pump according to claim 1, characterized in that: The oil outlet cavity (12) is in communication with the oil cylinder (2). The valve block (1) is provided with an oil suction cavity (14) in communication with the high-pressure oil cavity (64). The oil suction cavity (14) is provided with the one-way valve (13).

3. A dual high voltage electric hydraulic pump according to claim 1, wherein: The oil outlet valve (3) comprises an oil return cavity (31) arranged in the valve block (1) and in communication with the oil cylinder (2) and used for returning oil, a plug (6) arranged in the oil return cavity (31), a valve seat (32) arranged in the valve block (1), an oil outlet valve core (33) movably arranged in the oil return cavity (31), a spring (34) arranged between the oil outlet valve core (33) and the plug (6), a driving rod (35) slidably arranged in the oil return cavity (31), a thimble (36) slidably arranged on the oil outlet valve core (33) and in contact with one end of the driving rod (35), and a spring (37) arranged between the driving rod (35) and the valve seat (32).

4. A dual high voltage electric hydraulic pump according to claim 3, characterized in that: The oil outlet valve core (33) comprises an oil outlet valve core (7) and an oil outlet valve core (71) movably arranged in the oil outlet valve core (7). The thimble (36) is slidably arranged in the oil outlet valve core (7) and in contact with one end of the oil outlet valve core (71). A spring (72) is further arranged between the oil outlet valve core (7) and the driving rod (35).

5. A dual high voltage electric hydraulic pump according to claim 4, characterized in that: An oil return groove (73) is further arranged on the thimble (36).

6. A dual high voltage electric hydraulic pump according to claim 3, wherein: A connecting rod (8) movably arranged on the valve block (1) and used for driving the oil outlet valve (3) to act is further provided. A driver (81) movably arranged on the valve block (1) and in connection with the other end of the connecting rod (8) is further provided. The connecting rod (8) is provided with an inclined surface (82) in contact with the driving rod (35).

7. A dual high voltage electric hydraulic pump according to claim 6, characterized in that: The driver (81) is a push-pull electromagnet.

8. A dual high voltage electric hydraulic pump according to claim 6, characterized in that: A retaining electromagnet (83) arranged on the connecting rod (8) and used for retaining the position of the connecting rod (8) is further provided.

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