CN110529719B - Grease pump, pump head assembly and oil conveying device thereof - Google Patents

Grease pump, pump head assembly and oil conveying device thereof Download PDF

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Publication number
CN110529719B
CN110529719B CN201810515561.3A CN201810515561A CN110529719B CN 110529719 B CN110529719 B CN 110529719B CN 201810515561 A CN201810515561 A CN 201810515561A CN 110529719 B CN110529719 B CN 110529719B
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China
Prior art keywords
oil
assembly
seesaw
teeterboard
teeter
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CN201810515561.3A
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Chinese (zh)
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CN110529719A (en
Inventor
赵民章
刘新功
马利峰
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ZHENGZHOU AUTOL TECHNOLOGY CO LTD
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ZHENGZHOU AUTOL TECHNOLOGY CO LTD
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Priority to CN201810515561.3A priority Critical patent/CN110529719B/en
Publication of CN110529719A publication Critical patent/CN110529719A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/02—Lubricating-pumps with reciprocating piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N19/00—Lubricant containers for use in lubricators or lubrication systems
    • F16N19/003—Indicating oil level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
    • F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2250/00—Measuring
    • F16N2250/18—Level
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N2260/00—Fail safe
    • F16N2260/02—Indicating
    • F16N2260/04—Oil level

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a grease pump, a pump head assembly and an oil delivery device thereof. The oil pump comprises a pump head assembly and an oil tank, wherein the oil tank is fixed on the pump head assembly and forms an oil storage cavity with an inner cavity of the pump head assembly, a driving device and an oil pumping unit for pumping oil are arranged in the pump head assembly, an output rotating shaft of the driving device stretches into one side of the oil tank from one side of the pump head assembly in the oil storage cavity, an oil conveying device for conveying oil to the oil pumping unit is arranged on the output rotating shaft, the oil conveying device is positioned at the upper part of an oil suction port of the oil pumping unit, and the oil conveying device comprises a seesaw assembly assembled on the output rotating shaft in a swinging manner; the center of the oil facing surface height of the seesaw component in the swinging direction is higher than the swinging axis of the seesaw component, and the seesaw component can swing around the swinging axis of the seesaw component after being subjected to grease resistance along the swinging direction so as to enable one end of the seesaw component to tilt. The teeterboard of the oil pump can realize the oil transportation by self-adapting the steering of the output rotating shaft, and solves the problem that the current oil transportation device of the oil pump can not realize the steering of the self-adapting output rotating shaft.

Description

Grease pump, pump head assembly and oil conveying device thereof
Technical Field
The invention relates to the field of lubricating equipment, in particular to a grease pump, a pump head assembly and an oil delivery device thereof.
Background
The oil tank of the existing oil pump is positioned at the upper part, the oil discharging plunger is positioned at the bottom of the oil tank, an oil conveying device is arranged in the oil tank and comprises an impeller assembly, the impeller assembly is driven by a motor to rotate, oil in the oil tank is stirred, and along with the consumption of the oil at the bottom, the oil at the upper part of the oil tank flows into the bottom; however, when the oil with lower use temperature and higher viscosity is used, the oil cannot enter the bottom of the oil tank, so that the oil cannot be sucked by the plunger at the oil suction hole of the plunger, and therefore, the oil outlet of the oil pump is not discharged by lubricating grease, the plunger idles, and the lubricating grease is not pumped in by the lubricating point, so that under lubrication is caused, and mechanical equipment is damaged. In order to solve the problem that grease can't get into the oil tank bottom because of the viscosity is high, the chinese patent with bulletin number CN202598093, bulletin day 2012.12.12 discloses a hydraulic grease pump's oil scraping device, this hydraulic grease pump's oil scraping device is including rotating the flywheel shaft of assembly on the pump head subassembly, the top of pump head subassembly is equipped with the oil tank, the oil tank is fixed on the pump head subassembly and the inner chamber of pump head subassembly forms the oil storage chamber, the flywheel shaft is the output pivot, the flywheel shaft stretches into from pump head subassembly one side oil tank one side in the oil storage chamber, the both sides of flywheel shaft are equipped with the oil delivery piece, the oil delivery piece is the oil delivery device, the oil delivery piece passes through the fastener to be fixed on the flywheel shaft, the oil suction inlet of grease pump sets up in the below of oil delivery piece, the oil suction inlet sets up on separating the otter board, can drive the oil delivery piece rotation when the flywheel shaft rotates, stir, because the equal following its rotation direction of oil delivery piece is with the same angle slope setting, make the grease delivery piece when rotatory, will press towards the pump head subassembly, increase the pressure of grease suction inlet department, the mobility of grease. The oil scraping device can press lubricating grease into the pump head assembly, but the oil conveying sheet is fixed on the rotating shaft, so that the oil conveying sheet can scrape lubricating grease in the direction opposite to the oil suction port when the rotating shaft is reversed, and the problem that the oil conveying sheet of the oil scraping device cannot adaptively output the rotating shaft to turn is solved.
Disclosure of Invention
The invention aims to provide a grease pump so as to solve the problem that an oil delivery device of the conventional grease pump cannot adaptively output rotation shaft steering; the invention also aims to provide a pump head assembly and an oil delivery device used by the pump head assembly.
In order to achieve the above purpose, the grease pump of the present invention adopts the following technical scheme:
scheme 1: the grease pump comprises a pump head assembly and a fuel tank, wherein the fuel tank is fixed on the pump head assembly and forms a grease storage cavity with an inner cavity of the pump head assembly, a driving device and a grease pumping unit for pumping grease are arranged in the pump head assembly, an output rotating shaft of the driving device stretches into one side of the fuel tank from one side of the pump head assembly in the grease storage cavity, an oil conveying device for conveying oil to the grease pumping unit is arranged on the output rotating shaft, the oil conveying device is positioned at the upper part of an oil suction port of the grease pumping unit, and the oil conveying device comprises a seesaw assembly assembled on the output rotating shaft in a swinging way; the center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter assembly can swing around the swinging axis of the teeter-totter assembly after being subjected to grease resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt.
Scheme 2: a further development of the invention 1 provides that the teeter-totter assembly comprises a teeter-totter, wherein at least one of the two sides of the teeter-totter lying on the pivot axis is provided with a fold which is folded upwards from a direction closer to the pivot axis to a direction further away from the pivot axis.
Scheme 3: a further improvement of the embodiment 2 is that the bending portion is provided at an end portion of the teeter-totter.
Scheme 4: the seesaw assembly comprises a seesaw and a direction-adjusting plate which is arranged on the seesaw and extends from the pump head assembly to the direction of the oil tank.
Scheme 5: a further development of the embodiment 4 is that the steering plate is fixed vertically to the teeterboard.
Scheme 6: a further improvement on the basis of claim 5 is that the teeter-totter assembly comprises a teeter, the axis of oscillation of the teeter-totter assembly being on the underside of the teeter-totter.
Scheme 7: the further improvement of the aspect 6 is that the teeter-totter assembly further comprises a steering plate provided on the teeter-totter and extending from the pump head assembly to the direction of the fuel tank.
Scheme 8: the oil tank and the pump head assembly are separated, and a separation screen plate with meshes is arranged between the teeterboard assembly and the oil suction port of the oil pump unit and is in propping fit with the teeterboard assembly after one end of the teeterboard assembly is tilted so as to limit the teeterboard assembly.
Scheme 9: a further improvement on the basis of the scheme 8 is that the grease pump further comprises a low liquid level alarm device for alarming when the liquid level in the oil tank reaches or falls below a set value.
Scheme 10: the low liquid level alarm device is further improved based on the scheme 9, and comprises a movable block which moves up and down, a spring, a sensor and a sensor, wherein one end of the movable block is provided with a sliding part which is used for being matched with a seesaw component in a sliding way, the spring can provide elastic acting force for the movable block upwards, the sensor can trigger an alarm signal according to the movement of the movable block, and the seesaw component can press down the movable block to trigger the sensor when the liquid level of an oil tank is higher than the set value; when the liquid level of the oil tank reaches or is lower than a set value, the grease resistance torque borne by the teeterboard assembly is smaller than the thrust torque of the spring, so that the movable block cannot be pressed down, and the sensor cannot be triggered.
Scheme 11: a further improvement on the basis of the scheme 10 is that the oil facing surface of the sliding part is an arc-shaped surface.
Scheme 12: the seesaw assembly comprises a seesaw and a seesaw shaft fixedly arranged on the output rotating shaft, and the seesaw is hinged to the seesaw shaft.
The pump head assembly adopts the following technical scheme:
scheme 1: the oil delivery device is positioned at the upper part of an oil suction port of the oil pump unit, and comprises a seesaw assembly which is assembled on the output rotating shaft in a swinging way; the center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter assembly can swing around the swinging axis of the teeter-totter assembly after being subjected to grease resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt.
Scheme 2: a further development of the invention 1 provides that the teeter-totter assembly comprises a teeter-totter, wherein at least one of the two sides of the teeter-totter lying on the pivot axis is provided with a fold which is folded upwards from a direction closer to the pivot axis to a direction further away from the pivot axis.
Scheme 3: a further improvement of the embodiment 2 is that the bending portion is provided at an end portion of the teeter-totter.
Scheme 4: the seesaw assembly comprises a seesaw and a direction-adjusting plate which is arranged on the seesaw and extends from the pump head assembly to the direction of the oil tank.
Scheme 5: a further development of the embodiment 4 is that the steering plate is fixed vertically to the teeterboard.
Scheme 6: a further improvement on the basis of claim 5 is that the teeter-totter assembly comprises a teeter, the axis of oscillation of the teeter-totter assembly being on the underside of the teeter-totter.
Scheme 7: the further improvement of the aspect 6 is that the teeter-totter assembly further comprises a steering plate provided on the teeter-totter and extending from the pump head assembly to the direction of the fuel tank.
Scheme 8: the connection part comprises a separation screen plate which is arranged between the teeterboard component and an oil suction port of the oil pumping unit, isolates the oil tank and the pump head component and is provided with meshes, and the separation screen plate is in propping fit with the teeterboard component after one end of the teeterboard component is tilted so as to limit the teeterboard component.
Scheme 9: the grease pump further comprises a low liquid level alarm device for alarming when the liquid level in the oil tank reaches or is lower than a set value.
Scheme 10: the low liquid level alarm device is further improved based on the scheme 9, and comprises a movable block which moves up and down, a spring, a sensor and a sensor, wherein one end of the movable block is provided with a sliding part which is used for being matched with a seesaw component in a sliding way, the spring can provide elastic acting force for the movable block upwards, the sensor can trigger an alarm signal according to the movement of the movable block, and the seesaw component can press down the movable block to trigger the sensor when the liquid level of an oil tank is higher than the set value; when the liquid level of the oil tank reaches or is lower than a set value, the grease resistance torque borne by the teeterboard assembly is smaller than the thrust torque of the spring, so that the movable block cannot be pressed down, and the sensor cannot be triggered.
Scheme 11: a further improvement on the basis of the scheme 10 is that the oil facing surface of the sliding part is an arc-shaped surface.
Scheme 12: the seesaw assembly comprises a seesaw and a seesaw shaft fixedly arranged on the output rotating shaft, and the seesaw is hinged to the seesaw shaft.
The oil conveying device adopts the following technical scheme:
scheme 1: the oil conveying device comprises a seesaw assembly which is assembled on an output rotating shaft of the driving device in a swinging way; the center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter assembly can swing around the swinging axis of the teeter-totter assembly after being subjected to grease resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt.
Scheme 2: a further development of the invention 1 provides that the teeter-totter assembly comprises a teeter-totter, wherein at least one of the two sides of the teeter-totter lying on the pivot axis is provided with a fold which is folded upwards from a direction closer to the pivot axis to a direction further away from the pivot axis.
Scheme 3: a further improvement of the embodiment 2 is that the bending portion is provided at an end portion of the teeter-totter.
Scheme 4: the seesaw assembly comprises a seesaw and a direction-adjusting plate which is arranged on the seesaw and extends from the pump head assembly to the direction of the oil tank.
Scheme 5: a further development of the embodiment 4 is that the steering plate is fixed vertically to the teeterboard.
Scheme 6: a further development of the method 1 is that the rocker assembly comprises a rocker, the pivot axis of which is located on the underside of the rocker.
Scheme 7: a further improvement of the method 6 is that the seesaw assembly further comprises a steering plate arranged on the seesaw and extending from the pump head assembly to the direction of the oil tank.
Scheme 8: the seesaw assembly comprises a seesaw and a seesaw shaft fixedly arranged on the output rotating shaft, and the seesaw is hinged to the seesaw shaft.
The beneficial effects of the invention are as follows: the teeterboard assembly is hinged on the output rotating shaft and revolves around the rotating axis of the output rotating shaft, and the height center of the oil facing surface of the teeterboard assembly in the swinging direction is higher than the swinging axis of the teeterboard assembly, so that the teeterboard can automatically turn over when the output rotating shaft is converted from forward to reverse, and the oil transportation can be realized by self-adapting the steering of the output rotating shaft.
Further, the teeter-totter assembly comprises a teeter-totter, at least one of two sides of the teeter-totter, which are positioned on the swinging axis, is provided with a bending part which bends upwards from a direction close to the swinging axis to a direction far away from the swinging axis, and the bending part is used for enabling the center of the oil facing surface height of the teeter-totter assembly in the swinging direction to be higher than the swinging axis of the teeter-totter assembly. The bending part can ensure that the teeterboard can stably rotate when being in a horizontal position while the teeterboard can meet the steering of the self-adaptive output rotating shaft.
Further, the seesaw assembly comprises a seesaw, the swing axis of the seesaw is arranged on the lower side of the seesaw, so that the center of the oil facing surface height of the seesaw assembly in the swing direction is higher than the swing axis of the seesaw assembly, and the self-adaptive steering of the seesaw can be ensured more reliably by reasonably arranging the relative positions of the seesaw and the rotation axis due to the arrangement of the seesaw and the swing axis of the seesaw assembly at intervals.
Further, the bending part is arranged at the end part of the teeterboard, so that the teeterboard is convenient to process.
Furthermore, the low liquid level alarm device is very ingenious in arrangement, and the characteristic that the grease resistance of the teeterboard assembly is small when the liquid level is low is utilized, so that the teeterboard assembly is insufficient to resist the counter force of the spring, and therefore the movable block cannot be pushed down, and the sensor cannot be triggered; but when the liquid level is higher than the set value, the resistance of the grease provides the movable block with a pressure which is enough to overcome the resistance of the spring, so that the movable block can be pressed down to trigger the sensor; the device has the advantages of simple structure and small occupied volume, and more importantly, the device utilizes the motion characteristic of the seesaw assembly in grease, thereby realizing the function of low liquid level alarm and being very ingenious.
Drawings
Fig. 1 is a schematic structural view (not shown in the tank) of embodiment 1 of the grease pump of the present invention;
FIG. 2 is a schematic view showing an assembly structure of a teeter-totter and a teeter-totter shaft in accordance with embodiment 1 of the present invention;
fig. 3 is a schematic view showing a seesaw of embodiment 1 of the grease pump according to the present invention in a state where the second rotation stop is positioned and the output shaft is rotated forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force direction of the seesaw);
fig. 4 is a schematic view showing a state in which a portion between the first and second bending portions of the teeterboard of the grease pump according to the embodiment 1 of the present invention is parallel to the dividing screen and the output shaft rotates forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force direction of the teeterboard);
fig. 5 is a schematic view showing a seesaw of embodiment 1 of the grease pump according to the present invention in a state where the first rotation stop is positioned and the output shaft is rotated forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force receiving direction of the seesaw);
FIG. 6 is a schematic view showing an assembled structure of a teeter-totter and a teeter-totter shaft in accordance with embodiment 2 of the present invention;
fig. 7 is a schematic view showing a state in which a teeterboard of embodiment 3 of the grease pump of the present invention is in a second rotation stop position and the output shaft is rotated forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force receiving direction of the teeterboard);
FIG. 8 is a schematic view showing a seesaw of embodiment 3 of the grease pump according to the present invention in a state where the output shaft rotates forward in parallel with the partitioning net plate (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force direction of the seesaw);
fig. 9 is a schematic view showing a seesaw of embodiment 3 of the grease pump according to the present invention in a state where the first rotation stop is positioned and the output shaft is rotated forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force receiving direction of the seesaw);
FIG. 10 is a schematic view showing the structure of a seesaw assembly according to embodiment 4 of the grease pump of the present invention;
FIG. 11 is a schematic view showing the structure of a seesaw assembly according to embodiment 5 of the grease pump of the present invention;
FIG. 12 is a schematic view showing the structure of a seesaw assembly according to embodiment 6 of the grease pump of the present invention;
FIG. 13 is a schematic view showing the structure of a seesaw assembly according to embodiment 7 of the grease pump of the present invention;
fig. 14 is a schematic structural view of embodiment 8 of the grease pump according to the present invention (the oil tank is not shown);
fig. 15 is a schematic view showing a state in which a teeterboard of embodiment 8 of the grease pump of the present invention is in a second rotation stop position and the output shaft is rotated forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force direction of the teeterboard);
FIG. 16 is a schematic view showing a seesaw of an embodiment 8 of the grease pump according to the present invention in a state where the output shaft rotates forward while being parallel to the partition screen (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force direction of the seesaw);
fig. 17 is a schematic view showing a seesaw of embodiment 8 of the grease pump according to the present invention in a state where the first rotation stop is positioned and the output shaft is rotated forward (large arrow in the figure indicates the rotation direction of the output shaft, and small arrow indicates the force receiving direction of the seesaw);
FIG. 18 is a schematic view showing the structure of a seesaw assembly according to embodiment 9 of the grease pump of the present invention;
FIG. 19 is a schematic view showing the structure of a teeter-totter assembly of an embodiment 10 of a grease pump according to the present invention;
FIG. 20 is a schematic view showing the structure of a seesaw assembly of embodiment 11 of the grease pump according to the present invention;
FIG. 21 is a schematic view showing the structure of a seesaw assembly of embodiment 12 of the grease pump according to the present invention;
FIG. 22 is a schematic diagram of a low level warning device;
in the figure: 1-a pump head assembly, 2-an oil delivery device, 12-a plunger, 13-a separation screen plate, 131-an oil suction hole, 20-a swinging axis, 21-an output rotating shaft, 22-a seesaw, 221-a first bending part, 222-a second bending part, 223-a first abutting part, 224-a second abutting part, 225-a long waist hole, 23-a seesaw shaft, 231-a stop pin, 240-a connecting plate, 201-an oil facing surface height center and 2a oil facing surface height; 200-of a swinging axis, 220-of a seesaw, 230-of a seesaw shaft and 240-of a connecting plate; 420-swinging axis, 422-seesaw, 423-seesaw shaft; 520-swinging axis, 522-seesaw, 523-seesaw shaft and 524-connecting plate; 622-teeterboard, 623-teeterboard shaft, 6221-first bending part, 6222-second bending part; 720-swinging axis, 722-seesaw, 723-seesaw shaft, 724-connecting plate; 813-separating screen plates, 8131-oil suction holes, 820-swing axes, 821-output rotating shafts, 822-teeterboard, 823-teeterboard shafts, 824-direction-adjusting plates, 8223-first abutting parts and 8224-second abutting parts; 920-swing axis, 922-teeter, 923-teeter shaft; 1020-swinging axes, 1022-teeterboards, 1023-teeterboard shafts and 1024-connecting plates; 1122-teeterboard, 1124-first steering board, 1125-second steering board; 1220-swing axis, 1222-teeter-totter, 1223-teeter-totter shaft, 1224-web; 101-movable block, 1011-sliding part, 102-spring, 103-sensor.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
In the embodiment 1 of the grease pump according to the present invention, as shown in fig. 1 to 5, the grease pump includes a fuel tank and a pump head assembly 1 disposed below the fuel tank, and the fuel tank is fixed to the pump head assembly 1 and forms a reservoir chamber with an inner cavity of the pump head assembly 1. An oil pumping unit for pumping grease is arranged in the pump head assembly 1, and the oil pumping unit is provided with an oil suction port. The pump head assembly 1 is provided with a plunger 12, the upper part of the pump head assembly 1 is provided with a connecting part which is used for being connected with an oil tank, and the connecting part is provided with an oil duct which is used for communicating the inside of the pump head assembly with the inside of the oil tank. The connecting portion comprises an oil tank fixing portion for fixing an oil tank and a separation screen plate 13 positioned at the bottom of the oil tank, the separation screen plate is arranged between the teeterboard component and an oil suction port of the oil pumping unit and is used for isolating the interior of the oil tank from the interior of the pump head component, and oil suction holes 131 for lubricating grease to enter are formed in the separation screen plate 13. A driving device is also arranged in the pump head assembly 1.
The driving device comprises an output rotating shaft 21 which is vertically arranged, the output rotating shaft 21 extends from one side of the pump head assembly 1 to one side of the oil tank in the oil storage cavity, and the upper end of the output rotating shaft 21 penetrates through the separation screen 13 and is inserted into the oil tank. The output rotating shaft 21 is provided with an oil conveying device 2 for conveying oil to the oil pumping unit, and the oil conveying device 2 is positioned at the upper part of an oil suction port of the oil pumping unit. The oil delivery device 2 comprises a seesaw component which is arranged on the output rotating shaft and forms a fulcrum on the output rotating shaft in a swinging way, the seesaw component comprises a seesaw 22 and a seesaw shaft 23 which are arranged in the oil tank and above the separation screen, the seesaw shaft 23 is fixedly arranged on the output rotating shaft 21, the seesaw 22 is hinged on the output rotating shaft 21 through being hinged with the seesaw shaft 23, in other embodiments, the seesaw can be directly hinged on the output rotating shaft, a pin shaft is arranged on the seesaw at the moment, a mounting hole is arranged on the output rotating shaft, and the pin shaft is rotationally assembled in the mounting hole.
The teeter-totter 22 revolves around the output shaft rotation axis, and the teeter-totter axis 20 is the axis of the teeter-totter shaft 23.
The center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter can swing around the swinging axis 20 after being subjected to oil resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt. In this embodiment, when the teeter-totter assembly rotates with the output shaft, the projected area of the teeter-totter in the vertical direction at the upper portion of the center of the oil-facing surface is equal to the projected area of the teeter-totter in the vertical direction at the lower portion of the center of the oil-facing surface. In this embodiment, the teeter-totter is of a symmetrical structure, and the ends of the teeter-totter 22 on both sides of the swing axis 20 of the teeter-totter are provided with bending parts bent upwards, the bending parts are used for making the oil-facing height center 201 of the teeter-totter 22 in the swing direction higher than the swing axis of the teeter-totter, as shown in fig. 5, the oil-facing height of the teeter-totter 22 is 2a, the swing axis 20 is below the oil-facing height center 201, that is, the projection area of the part of the teeter-totter 22 above the swing axis 20 of the teeter-totter is larger than the projection area of the part of the teeter-totter 22 below the swing axis 20 on the vertical plane when any end of the teeter-totter is tilted. It should be noted that the portions of the teeter-totter 22 on either side of the teeter-totter's axis of oscillation 20 should be the portions of the teeter-totter 22 on either side of the teeter-totter's axis of oscillation 20 projected on the teeter-totter 22. In other embodiments, the bending portion may be disposed at any one side, or may be disposed in the middle of any one side of the two side portions of the swing axis 20 of the teeter-totter, not limited to the end portion.
The teeterboard 22 is tilted along a portion forward in the forward direction of the output shaft 21 when the output shaft 21 is rotated forward, and tilted along a portion forward in the reverse direction of the output shaft 21 when the output shaft 21 is rotated reverse. In this embodiment, the swing axis 20 of the seesaw, that is, the rotation axis of the seesaw 22, the swing axis 20 of the seesaw is perpendicular to the rotation axis of the output shaft, and the seesaw 22 has a first rotation stopping position and a second rotation stopping position, when the seesaw 22 is in the first rotation stopping position, the seesaw 22 is inclined from bottom to top along the forward rotation direction of the output shaft 21, and when the seesaw 22 is in the second rotation stopping position, the seesaw 22 is inclined from bottom to top along the reverse rotation direction of the output shaft 21, the lubrication grease in the oil tank is pressed down by spinning, and the cut lubrication grease is convenient to be sucked away by the oil suction port. In addition, bubbles mixed in the lubricating grease can be discharged upwards after the teeterboard 22 cuts the lubricating grease, and the bubbles do not enter the plunger through the oil suction port, so that the oil pumping effect is not influenced by the pumping. The seesaw 22 is limited by the dividing screen plate to realize rotation stopping when being at the first rotation stopping position and the second rotation stopping position.
The teeter 22 is provided with a teeter shaft hole hinged with the teeter shaft 23, the teeter 22 is hinged with the teeter shaft 23 so that the teeter 22 is hinged on the output rotating shaft 21, and the teeter shaft 23 is arranged below the teeter 22 so as to realize that the teeter 22 and the swing axis 20 of the teeter are arranged in parallel at intervals. The seesaw 22 has a center line parallel to the seesaw axis 23, and the seesaw 22 is disposed symmetrically about the center line.
In this embodiment, the axis of the seesaw, i.e., the axis of the seesaw shaft, coincides with the seesaw center line in a projection line perpendicular to the seesaw 22. The two sides of the seesaw 22 symmetrical about the central line are respectively provided with a first bending part and a second bending part which are bent upwards at one end far away from the central line, wherein the first bending part 221 is provided with a first abutting part 223 which is in abutting fit with the separation screen plate when the seesaw 22 is in the first rotation stop position so as to realize the rotation stop of the seesaw 22 when the seesaw 22 rotates to the first rotation stop position, and the second bending part 222 is provided with a second abutting part 224 which is in abutting fit with the separation screen plate when the seesaw 22 is in the second rotation stop position so as to realize the rotation stop of the seesaw 22 when the seesaw 22 rotates to the second rotation stop position.
In this embodiment, the swing axis 20 of the seesaw is spaced from the seesaw 22, and the arrangement of the swing axis of the seesaw and the seesaw at intervals also makes the center of the height of the oil facing surface of the seesaw assembly in the swing direction higher than the swing axis of the seesaw assembly, even if the projected area of the portion above the swing axis 20 of the seesaw when any end of the seesaw 22 is tilted is larger than the projected area of the portion below the swing axis 20 of the seesaw on the vertical plane, the adaptive steering of the seesaw 22 can be ensured more reliably.
Since the seesaw 22 revolves around the rotation axis of the output rotation shaft, the force applied to the seesaw 22 during rotation is always in the horizontal direction, the seesaw 22 and the output rotation shaft 21 form a seesaw assembly, and the fulcrum of the seesaw is provided on the seesaw shaft 23.
The seesaw 22 rotates from the second rotation stop position to the first rotation stop position when the output shaft 21 rotates forward as follows:
as shown in fig. 3, the teeterboard 22 is in the second rotation stop position, and the output shaft 21 rotates forward. The seesaw 22 is arranged in a second rotation stopping position, the seesaw 22 is obliquely arranged from bottom to top along the reverse direction of the output rotating shaft 21, and the swing axes of the first bending part, the second bending part and the seesaw arranged at intervals and the seesaw 22 enable the center of the oil facing surface height of the seesaw 22 in the swing direction to be higher than the swing axis of the seesaw.
The projected area of the portion of the seesaw above the swing axis 20 on the vertical plane is larger than the projected area of the portion of the seesaw below the swing axis 20 on the vertical plane, so that the portion of the seesaw 22 below the swing axis 20 of the seesaw is subjected to a torque that rotates the seesaw 22 from the first rotation stop to the second rotation stop that is smaller than the torque that rotates the portion of the seesaw 22 above the swing axis 20 of the seesaw 22 from the second rotation stop to the first rotation stop, so that the seesaw 22 is rotated from the second rotation stop to the first rotation stop;
As shown in fig. 4, as the seesaw 22 rotates, the portion between the first and second bending portions of the seesaw 22 is parallel to the dividing screen, and at this time, both bending portions of the seesaw 22 receive a force to rotate the seesaw 22 from the second rotation stop position to the first rotation stop position, and the seesaw 22 continues to rotate toward the first rotation stop position.
As shown in fig. 5, the seesaw 22 continues to rotate toward the first rotation stop, the swing axis of the seesaw 22 and the first and second bending portions provided at intervals make the projection area of the portion of the seesaw 22 above the swing axis 20 of the seesaw on the vertical plane larger than the projection area of the portion of the seesaw 22 below the swing axis 20 of the seesaw on the vertical plane, so that the torque of the portion of the seesaw 22 below the swing axis 20 of the seesaw is smaller than the torque of the portion of the seesaw 22 above the swing axis 20 of the seesaw 22 from the second rotation stop to the first rotation stop, and the seesaw 22 rotates from the second rotation stop to the first rotation stop; the seesaw 22 rotates to the first rotation stopping position, at this time, the first abutting part on the first bending part is abutted and matched to realize the rotation stopping of the seesaw 22, the seesaw 22 inclines upwards from bottom to top along the forward rotation direction of the output rotating shaft 21, and the seesaw 22 can press lubricating grease to the oil suction port along with the rotation of the output rotating shaft 21.
When the teeterboard 22 is in the first rotation stopping position and the output rotating shaft 21 is reversed, the movement condition of the teeterboard 22 is the same as the principle, and finally the teeterboard 22 is inclined from bottom to top along the reversing direction of the output rotating shaft 21, and the teeterboard 22 can press lubricating grease to the oil suction port along with the rotation of the output rotating shaft 21. Compared with the existing grease pump, the grease pump does not need to determine the inclination direction of the teeterboard 22 and the steering direction of the output rotating shaft 21 during assembly, and the teeterboard 22 can adapt to the steering direction of the output rotating shaft 21 to realize oil transportation.
As shown in fig. 22, the grease pump further comprises a low liquid level alarm device for alarming when the liquid level in the oil tank reaches or falls below a set value, the low liquid level alarm device comprises a movable block 101 and a spring 102, one end of the movable block 101 is provided with a sliding part 1011 for sliding and pushing with the seesaw 22, the spring 102 can provide upward elastic acting force for the movable block 102, the low liquid level alarm device further comprises a sensor 103 capable of triggering an alarm signal according to the movement of the movable block, and the seesaw assembly can press down the movable block according to normal frequency to trigger the sensor when the liquid level of the oil tank is higher than the set value; when the liquid level of the oil tank reaches or is lower than a set value, the grease resistance torque borne by the teeterboard assembly is smaller than the thrust torque of the spring, so that the movable block cannot be pressed down, and the sensor cannot be triggered. The sliding part is a spherical surface, and the sensor can be an electromagnetic induction sensor, an infrared induction sensor or a mechanical sensor, and the sliding part of the movable block penetrates out of the separation screen 13 upwards and can move downwards under the extrusion of the teeterboard. In other embodiments, the proximity switch matched with the teeterboard assembly can be arranged according to the grease resistance torque of the teeterboard assembly, the proximity switch senses the distance between the teeterboard assembly, and then the liquid level in the oil tank is judged.
Embodiment 2 of a grease pump according to the present invention differs from embodiment 1 of the above-described grease pump only in that: as shown in fig. 6, in this embodiment, the seesaw 22 may not be in abutting engagement with the partition screen, and a limit structure for limiting the rotation of the seesaw by a set angle is provided between the seesaw shaft 23 and the seesaw 22, and a seesaw shaft hole in rotational engagement with the seesaw shaft 23 is provided on the seesaw 22, and the limit structure includes a stopper pin 231 provided on the seesaw shaft 23 and a long waist hole 225 provided on a side wall of the seesaw shaft hole and extending in a circumferential direction of the seesaw hole and engaged with the stopper pin, and the long waist hole has a first stopper surface and a second stopper surface engaged with the stopper pin, and the seesaw is in a first rotation stopper position when the first stopper surface is engaged with the stopper pin, and in a second rotation stopper position when the second stopper surface is engaged with the stopper pin.
Embodiment 3 of a grease pump according to the present invention differs from embodiment 1 of the above-described grease pump only in that: as shown in fig. 7-9, the seesaw may be further provided with no bending portion, and the seesaw 220 is hinged to the seesaw shaft 230 through the connecting plate 240, and the seesaw is spaced from the swing axis 200 of the seesaw, and the swing axis of the seesaw assembly is located at the lower side of the seesaw so that the center of height of the oil facing surface of the seesaw assembly in the swing direction is higher than the swing axis of the seesaw assembly. In this embodiment, the connection plate is perpendicular to the teeter-totter and is disposed at the center line of the teeter-totter, but may not be perpendicular to the teeter-totter in other embodiments. In other embodiments, the connection board may be another connection piece such as a connection rod.
Embodiment 4 of a grease pump according to the present invention differs from embodiment 1 of the above-described grease pump only in that: as shown in fig. 10, the teeter-totter shaft 423 is provided on the teeter-totter 422, and the swing axis 420 of the teeter-totter assembly is provided on the teeter-totter 422, the swing axis 420 of the teeter-totter assembly coinciding with the center line of the teeter-totter 422.
Embodiment 5 of a grease pump according to the present invention differs from embodiment 1 of the above-described grease pump only in that: as shown in fig. 11, the teeter 522 and the connection plate 524 constitute a teeter assembly of the oil transportation device, the teeter 522 is hinged to the teeter shaft 523 through the connection plate 524, and the teeter 522 is spaced from the swing axis 520 of the teeter assembly.
Embodiment 6 of a grease pump according to the present invention differs from embodiment 4 of the above-described grease pump only in that: as shown in fig. 12, the first and second bending portions 6221 and 6222 of the seesaw 622 extend the seesaw axis 623, respectively.
Embodiment 7 of a grease pump according to the present invention differs from embodiment 5 of the above-described grease pump only in that: as shown in fig. 13, the teeter 722 and the connection plate 724 constitute a teeter-totter assembly of the oil delivery device, the teeter-totter 722 is hinged to the teeter-totter shaft 723 through the connection plate 724, and the teeter-totter 722 is disposed at a distance from the swing axis 720 of the teeter-totter assembly.
Embodiment 8 of a grease pump according to the present invention differs from embodiment 1 of the above-described grease pump only in that: as shown in fig. 14 to 17, the teeter-totter assembly further includes a steering plate 824 vertically fixed to the teeter-totter 822, the steering plate 824 having a forward bearing surface for tilting a portion of the teeter-totter 822 forward in a forward direction of the output shaft 821 when the output shaft 821 is rotated forward and a reverse bearing surface for tilting a portion of the teeter-totter 822 forward in a reverse direction of the output shaft 821 when the output shaft 821 is rotated reverse. The forward and reverse bearing surfaces are perpendicular to the teeter-totter 822. In this embodiment, the steering plate 824 is a bar-shaped square plate, the teeter-totter 822 has a center line parallel to the teeter-totter axis, and the swing axis 820 of the teeter-totter assembly coincides with the teeter-totter 822 center line along a projection line perpendicular to the teeter-totter 822. The steering plates 824 are disposed on the center line of the teeterboard 822, and the teeterboards 822 on both sides of the steering plates 824 are symmetrical to each other. The teeter 822 is provided with a teeter shaft hole hinged with a teeter shaft, the teeter 822 is hinged with the teeter shaft 823 so that the teeter 822 is hinged on the output rotating shaft 821, and the teeter shaft 823 is arranged below the teeter 822 to realize that the teeter 822 and the swing axis 820 of the teeter assembly are arranged in parallel at intervals. In this embodiment, the swing axis 820 of the seesaw assembly is spaced from the seesaw 822, and the spacing between the swing axis 820 of the seesaw assembly and the seesaw 822 also makes the center of the oil facing surface height of the seesaw assembly in the swing direction higher than the swing axis of the seesaw assembly, so that the seesaw assembly can swing around the swing axis of the seesaw assembly after being subjected to the oil resistance in the swing direction, so that one end of the seesaw assembly is tilted, that is, the projection area of the part above the swing axis 820 of the seesaw assembly on the vertical plane when any end of the seesaw 822 is tilted is larger than the projection area of the part below the swing axis 820 of the seesaw assembly on the vertical plane, and the adaptive steering of the seesaw 822 can be ensured more reliably.
In this embodiment, the vertical height of the raising end of any one of the two ends of the seesaw 822 when raising is smaller than the vertical height of the top end of the seesaw 824, so that the forward bearing surface can raise the part of the seesaw 822 that is forward in the forward rotation direction of the output rotation shaft 821 when the output rotation shaft 821 is forward, and the reverse bearing surface can raise the part of the seesaw 822 that is forward in the reverse rotation direction of the output rotation shaft 821 when the output rotation shaft 821 is reverse.
The two sides of the seesaw 822 symmetrical about the center line are respectively provided with a first abutting part 8223 which is abutted and matched with the separation screen plate when the seesaw 822 is in the first rotation stopping position so as to realize the rotation stopping when the seesaw 822 swings to the first rotation stopping position and a second abutting part 8224 which is abutted and matched with the separation screen plate when the seesaw 822 is in the second rotation stopping position so as to realize the rotation stopping when the seesaw 822 rotates to the second rotation stopping position at one end far away from the center line.
In other embodiments, the vertical height of the raised end of the seesaw 822 may be no less than the vertical height of the steering plate 824, in which case both ends of the seesaw 822 should be provided with notches corresponding to the steering plate 824 to ensure that the sum of the torques experienced by the portion of the seesaw and the portion of the steering plate 824 above the swing axis 820 of the seesaw assembly is greater than the sum of the torques experienced by the portion of the seesaw and the portion of the steering plate 824 below the swing axis 820 of the seesaw assembly.
Since the seesaw 822 revolves around the rotation axis of the output rotation shaft, the force applied to the seesaw 822 when rotating is always in the horizontal direction, the seesaw 822 and the output rotation shaft 821 constitute a seesaw assembly, and the fulcrum of the seesaw assembly is disposed on the seesaw shaft.
The seesaw 822 rotates from the second rotation stop position to the first rotation stop position when the output shaft 821 rotates forward as follows:
as shown in fig. 15, the teeterboard 822 is in the second rotation stop position, and the output shaft 821 is rotated forward. When the seesaw 822 is in the second rotation stop position, the seesaw 822 is obliquely arranged from bottom to top along the reverse direction of the output rotating shaft 821, and the vertical height of the top end of the steering plate 824 is larger than the vertical height of the tilting end of the seesaw 822, so that the part of the seesaw 822 below the swinging axis 820 of the seesaw assembly is subjected to torque for rotating the seesaw 822 from the first rotation stop position to the second rotation stop position, and the part of the seesaw 822 above the swinging axis 820 of the seesaw assembly is subjected to torque for rotating the seesaw 822 from the second rotation stop position to the first rotation stop position, and the seesaw 822 is rotated from the second rotation stop position to the first rotation stop position;
As shown in fig. 16, as the seesaw 822 rotates, the seesaw 822 is parallel to the partition screen 813, and the steering plate 824 on the seesaw 822 receives a force to rotate the seesaw 822 from the second rotation stop position to the first rotation stop position, and the seesaw 822 continues to rotate toward the first rotation stop position.
As shown in fig. 17, the seesaw 822 continues to turn toward the first rotation stop, at which time the seesaw 822 is tilted at a forward portion of the output shaft 821 in the forward direction, and at which time the vertical height of the tilted end of the seesaw 822 is still smaller than the vertical height of the tip of the steering plate 824, so that the portion of the seesaw 822 below the swing axis 820 of the seesaw assembly is subjected to a torque that causes the seesaw 822 to turn from the first rotation stop to the second rotation stop, and the portion of the seesaw 822 above the swing axis 820 of the seesaw assembly is subjected to a torque that causes the seesaw 822 to turn from the second rotation stop to the first rotation stop, at which time the first abutment portion abuts and cooperates to effect a stop of the seesaw 822, the seesaw 822 being tilted from below upward in the forward direction of the output shaft 821, whereby the seesaw 822 can suck grease into the oil hole 8131 as the output shaft 821 rotates.
When the teeter-totter 822 is in the first rotation stop position and the output shaft 821 is reversed, the movement of the teeter-totter 822 is the same as the above principle, and finally the teeter-totter 822 is inclined from bottom to top along the reversing direction of the output shaft 821 and the teeter-totter 822 can press lubricating grease to the oil suction port along with the rotation of the output shaft 821. Compared with the existing grease pump, the grease pump does not need to determine the inclination direction of the teeterboard 822 and the steering direction of the output rotating shaft 821 during assembly, and the teeterboard 822 can adapt to the steering direction of the output rotating shaft 821 to realize oil transportation.
Embodiment 9 of a grease pump according to the present invention differs from embodiment 8 of the above-described grease pump only in that: as shown in fig. 18, the seesaw shaft 923 is provided on the seesaw 922, the swing axis 920 of the seesaw assembly is provided on the seesaw 922, and the swing axis 920 of the seesaw assembly coincides with the center line of the seesaw 922.
An embodiment 10 of a grease pump according to the present invention differs from embodiment 8 of the above-described grease pump only in that: as shown in fig. 19, the teeter-totter assembly further includes a connection plate 1024, the teeter-totter 1022 being hinged to the teeter-totter shaft 1023 by the connection plate 1024, the teeter-totter 1022 being spaced from the swing axis 1020 of the teeter-totter assembly.
Embodiment 11 of a grease pump according to the present invention differs from embodiment 9 of the above-described grease pump only in that: as shown in fig. 20, the seesaw 1122 has two steering plates, i.e., a first steering plate 1124 and a second steering plate 1125, which are inclined in a direction away from each other.
An embodiment 12 of a grease pump according to the present invention differs from the embodiment 11 of the above-described grease pump only in that: as shown in fig. 21, the teeter-totter assembly further comprises a connecting plate 1224, the teeter 1222 being hinged to the teeter-totter shaft 1223 by means of the connecting plate 1224, the teeter-totter 1222 being spaced from the oscillation axis 1220 of the teeter-totter assembly.
In other embodiments of the grease pump of the present invention, the teeterboard may not be symmetrically disposed along the center line, and the bending angles of the first and second bending portions may be different, where the teeterboard is symmetrically disposed about the center line; the first and second abutting portions may not be provided on the two bending portions of the teeterboard, and when the bending angles of the first and second bending portions are large, the first and second abutting portions may be provided at positions between the first and second bending portions; the teeterboard can be in any irregular shape under the condition that the projection area of the part above the swinging axis of the teeterboard component on the vertical plane is larger than the projection area of the part below the swinging axis of the teeterboard component on the vertical plane when any end of the teeterboard is lifted; the bending part on the teeter-totter can be arranged on the teeter-totter only on any one of two sides of the swing axis of the teeter-totter assembly; the swing axis of the teeterboard assembly is not perpendicular to the rotation axis of the output rotating shaft, and the swing axis of the teeterboard assembly and the rotation axis of the output rotating shaft can be any set included angle which is more than 0 degrees and less than 180 degrees; the teeterboard may be provided in one or at least three.
The embodiments of the pump head assembly of the present invention are the same as those of the embodiments of the grease pump described above, and will not be described again.
The embodiments of the oil delivery device of the present invention are the same as those of the oil delivery device in the embodiments of the oil pump described above, and will not be described again.

Claims (32)

1. Grease pump, including pump head subassembly and oil tank, the oil tank is fixed on pump head subassembly and forms the oil storage chamber with the inner chamber of pump head subassembly, is equipped with drive arrangement in the pump head subassembly and is used for the pump oil unit of pumping grease, drive arrangement's output pivot is in oil storage intracavity stretches into from pump head subassembly one side oil tank one side, be provided with the oil transfer device to the oil pump oil unit oil transfer in the output pivot, oil transfer device is located oil suction mouth upper portion of oil pump oil unit, its characterized in that: the oil conveying device comprises a seesaw assembly which is assembled on the output rotating shaft in a swinging way; the center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter assembly can swing around the swinging axis of the teeter-totter assembly after being subjected to grease resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt.
2. The grease pump of claim 1, wherein: the seesaw assembly comprises a seesaw, and at least one of two sides of the seesaw, which are positioned on the swinging axis, is provided with a bending part which bends upwards from a direction close to the swinging axis to a direction far away from the swinging axis.
3. The grease pump of claim 2, wherein: the bending part is arranged at the end part of the teeterboard.
4. The grease pump of claim 1, wherein: the teeterboard assembly comprises a teeterboard and a direction-adjusting board which is arranged on the teeterboard and extends to the direction of the oil tank from the pump head assembly.
5. The grease pump of claim 4, wherein: the steering plate is vertically fixed on the teeterboard.
6. The grease pump of claim 1, wherein: the teeter-totter assembly comprises a teeter, and the swing axis of the teeter-totter assembly is positioned at the lower side of the teeter-totter.
7. The grease pump of claim 6, wherein: the teeterboard assembly further comprises a steering board which is arranged on the teeterboard and extends from the pump head assembly to the direction of the oil tank.
8. The grease pump according to any one of claims 1-7, wherein: a separation screen plate which is used for isolating the oil tank and the pump head assembly and provided with meshes is arranged between the teeterboard assembly and the oil suction port of the oil pump unit, the separation screen plate is in propping fit with the seesaw component at one end after tilting so as to limit the seesaw component.
9. The grease pump of claim 8, wherein: the grease pump also comprises a low liquid level alarm device for alarming when the liquid level in the oil tank reaches or is lower than a set value.
10. The grease pump of claim 9, wherein: the low liquid level alarm device comprises a movable block which moves up and down, a spring, a sensor and a sensor, wherein one end of the movable block is provided with a sliding part which is used for being matched with the seesaw component in a sliding way, the spring can provide elastic acting force for the movable block upwards, the sensor can trigger an alarm signal according to the movement of the movable block, and the seesaw component can press down the movable block to trigger the sensor when the liquid level of an oil tank is higher than the set value; when the liquid level of the oil tank reaches or is lower than a set value, the grease resistance torque borne by the teeterboard assembly is smaller than the thrust torque of the spring, so that the movable block cannot be pressed down, and the sensor cannot be triggered.
11. The grease pump of claim 10, wherein: the oil facing surface of the sliding part is an arc-shaped surface.
12. The grease pump of claim 1, wherein: the teeterboard assembly comprises a teeterboard and a teeterboard shaft fixedly arranged on the output rotating shaft, and the teeterboard is hinged on the teeterboard shaft.
13. The pump head assembly comprises a driving device and an oil pumping unit for pumping oil, wherein the upper part of the pump head assembly is provided with a connecting part used for being connected with an oil tank, an oil duct used for communicating the inside of the pump head assembly with the inside of the oil tank is arranged on the connecting part, an output rotating shaft of the driving device extends out of the pump head assembly into the oil tank, an oil conveying device for conveying oil to the oil pumping unit is arranged on the output rotating shaft, and the oil conveying device is positioned on the upper part of an oil suction port of the oil pumping unit and is characterized in that: the oil conveying device comprises a seesaw assembly which is assembled on the output rotating shaft in a swinging way; the center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter assembly can swing around the swinging axis of the teeter-totter assembly after being subjected to grease resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt.
14. The pump head assembly of claim 13 wherein: the seesaw assembly comprises a seesaw, and at least one of two sides of the seesaw, which are positioned on the swinging axis, is provided with a bending part which bends upwards from a direction close to the swinging axis to a direction far away from the swinging axis.
15. The pump head assembly of claim 14 wherein: the bending part is arranged at the end part of the teeterboard.
16. The pump head assembly of claim 13 wherein: the teeterboard assembly comprises a teeterboard and a direction-adjusting board which is arranged on the teeterboard and extends to the direction of the oil tank from the pump head assembly.
17. The pump head assembly of claim 16 wherein: the steering plate is vertically fixed on the teeterboard.
18. The pump head assembly of claim 13 wherein: the teeter-totter assembly comprises a teeter, and the swing axis of the teeter-totter assembly is positioned at the lower side of the teeter-totter.
19. The pump head assembly of claim 18 wherein: the teeterboard assembly further comprises a steering board which is arranged on the teeterboard and extends from the pump head assembly to the direction of the oil tank.
20. The pump head assembly of any one of claims 13-19 wherein: the connecting portion is including setting up the seesaw subassembly with keep apart between the oil suction port of pump oil unit the oil tank and pump head subassembly just have the separation otter board of mesh, separate the seesaw subassembly after otter board and perk one end and support the cooperation in order to realize spacing to the seesaw subassembly.
21. The pump head assembly of claim 20 wherein: the pump head assembly also comprises a low liquid level alarm device for alarming when the liquid level in the oil tank reaches or is lower than a set value.
22. The pump head assembly of claim 21 wherein: the low liquid level alarm device comprises a movable block which moves up and down, a spring, a sensor and a sensor, wherein one end of the movable block is provided with a sliding part which is used for being matched with the seesaw component in a sliding way, the spring can provide elastic acting force for the movable block upwards, the sensor can trigger an alarm signal according to the movement of the movable block, and the seesaw component can press down the movable block to trigger the sensor when the liquid level of an oil tank is higher than the set value; when the liquid level of the oil tank reaches or is lower than a set value, the grease resistance torque borne by the teeterboard assembly is smaller than the thrust torque of the spring, so that the movable block cannot be pressed down, and the sensor cannot be triggered.
23. The pump head assembly of claim 22 wherein: the oil facing surface of the sliding part is an arc-shaped surface.
24. The pump head assembly of claim 13 wherein: the teeterboard assembly comprises a teeterboard and a teeterboard shaft fixedly arranged on the output rotating shaft, and the teeterboard is hinged on the teeterboard shaft.
25. Oil delivery device, its characterized in that: the seesaw assembly is assembled on an output rotating shaft of the driving device in a swinging way; the center of the oil facing surface height of the teeter-totter assembly in the swinging direction is higher than the swinging axis of the teeter-totter assembly, and the teeter-totter assembly can swing around the swinging axis of the teeter-totter assembly after being subjected to grease resistance along the swinging direction so as to enable one end of the teeter-totter assembly to tilt.
26. An oil delivery device as in claim 25, wherein: the seesaw assembly comprises a seesaw, and at least one of two sides of the seesaw, which are positioned on the swinging axis, is provided with a bending part which bends upwards from a direction close to the swinging axis to a direction far away from the swinging axis.
27. An oil delivery device as in claim 26, wherein: the bending part is arranged at the end part of the teeterboard.
28. An oil delivery device as in claim 25, wherein: the teeterboard assembly comprises a teeterboard and a direction-adjusting board which is arranged on the teeterboard and extends to the direction of the oil tank from the pump head assembly.
29. An oil delivery device as in claim 28, wherein: the steering plate is vertically fixed on the teeterboard.
30. An oil delivery device as in claim 25, wherein: the teeter-totter assembly comprises a teeter, and the swing axis of the teeter-totter assembly is positioned at the lower side of the teeter-totter.
31. An oil delivery device as in claim 30, wherein: the teeterboard assembly further comprises a direction-adjusting board which is arranged on the teeterboard and extends to the direction of the oil tank from the pump head assembly.
32. The oil delivery device of claim 25, wherein: the teeterboard assembly comprises a teeterboard and a teeterboard shaft fixedly arranged on the output rotating shaft, and the teeterboard is hinged on the teeterboard shaft.
CN201810515561.3A 2018-05-25 2018-05-25 Grease pump, pump head assembly and oil conveying device thereof Active CN110529719B (en)

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