CN115627810A - Automatic oiling device for excavator walking, control system and method - Google Patents
Automatic oiling device for excavator walking, control system and method Download PDFInfo
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- CN115627810A CN115627810A CN202211198879.6A CN202211198879A CN115627810A CN 115627810 A CN115627810 A CN 115627810A CN 202211198879 A CN202211198879 A CN 202211198879A CN 115627810 A CN115627810 A CN 115627810A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 207
- 230000006835 compression Effects 0.000 claims abstract description 70
- 238000007906 compression Methods 0.000 claims abstract description 70
- 239000007924 injection Substances 0.000 claims abstract description 64
- 238000002347 injection Methods 0.000 claims abstract description 64
- 238000009826 distribution Methods 0.000 claims abstract description 31
- 239000004519 grease Substances 0.000 claims abstract description 31
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 17
- 239000010687 lubricating oil Substances 0.000 claims abstract description 12
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 8
- 238000005461 lubrication Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
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- 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
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
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- 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
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/38—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with a separate pump; Central lubrication systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses an automatic oiling device, a control system and a method for excavator walking, and relates to the technical field of oiling. The oil injection unit comprises an oil injection shell, wherein the inner cavity of the oil injection shell is connected with a compression piston in a sliding manner, and the inner cavity of the oil injection shell of the compression piston is divided into a compression area and a driving area; the oil distribution unit comprises an oil way distributor, an oil distribution end cover, a transition pipe, a separate injection oil pipe and a separate pipe connector. The invention has the beneficial effects that: the invention controls the start and stop of the pneumatic oil pump by adjusting the power supply time of the output end of the time relay so as to adjust the oil injection time and the oil injection amount; the synchronous automatic start and stop of a walking mode and a walking mechanism oiling system are realized by directly connecting a three-phase air switch at the lower end of an original walking lubricating oil pump contactor and controlling a pneumatic oil pump by a time relay. Therefore, on the one hand, the labor intensity of personnel is reduced, on the other hand, the lubricating effect and efficiency of the electric shovel travelling mechanism are improved, meanwhile, the grease waste is reduced, and the grease utilization rate is improved.
Description
Technical Field
The invention relates to the technical field of oil injection, in particular to an automatic oil injection device, a control system and a method for excavator walking.
Background
The excavator traveling mechanism needs to be lubricated by oil injection every day, the oil injection part is a friction surface between a shaft and a shaft sleeve of a driving wheel, a guide wheel and a thrust wheel, for example, 12 oil injection points are arranged on two side tracks of a WK-10 type excavator in total, the traveling mechanism is lubricated by manually filling lubricating grease with a manual oil gun, and each driver in each class needs to fill 4 guns of oil to respectively fill 12 oil nozzles with the oil by manual oil injection.
The manual oiling lubrication mode has the advantages that the manual oil gun is difficult to extrude due to the large viscosity of the lubricating oil, and the working strength is high. And because the oil quantity condition of the friction surface cannot be seen, the oil quantity required to be filled cannot be accurately judged. If the electric shovel of the excavator has a short walking distance in the operation process, but the normal amount of grease is filled, a lot of oil is not utilized and is extruded out of the lubricating surface to cause waste, the utilization rate of the grease is low, if the electric shovel has a long walking distance due to the walking of the shovel, the backward shovel, the brush upper and the like, the normal oil amount cannot meet the requirement of lubrication to cause oil shortage, and after the oil shortage, because the boundary lubricity is poor, the dry grinding phenomenon easily occurs on the friction surface, and the overheat locking of the shaft sleeve can be caused in serious cases.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made keeping in mind the above problems occurring in the prior art.
Therefore, the technical problem to be solved by the invention is how to automatically and properly control the oil feeding timing and the oil feeding amount of the lubricating oil of the excavator walking mechanism.
In order to solve the technical problems, the invention provides the following technical scheme: an automatic oiling device for walking of an excavator comprises an oiling unit, wherein the oiling unit comprises an oiling shell, an inner cavity of the oiling shell is connected with a compression piston in a sliding mode, the inner cavity of the compression piston oiling shell is divided into a compression area and a driving area, a transmission rod is rotatably mounted above and below the compression area through a sealing bearing and penetrates through the driving area, threaded holes are formed in two ends of the compression piston, two ends of the compression piston are in threaded connection with the transmission rod, and a main oiling pipe is arranged on the oiling shell; the oil distribution unit comprises an oil circuit distributor, an oil distribution end cover, a transition pipe, a separate injection oil pipe and a separate pipe connector, wherein one end of the oil circuit distributor is connected with the oil distribution end cover through the transition pipe, the oil circuit distributor is symmetrically provided with the separate injection oil pipes, and the separate injection oil pipes are connected with an oil injection port of the excavator walking mechanism through the separate pipe connector.
As a preferable scheme of the excavator walking automatic oiling device, the excavator walking automatic oiling device comprises the following steps: a driving shaft is arranged in the center of the compression area and is in synchronous transmission connection with the end parts of the two transmission rods through a transmission gear assembly;
the two sides of the inner cavity of the compression area are provided with semicircular cavities corresponding to the transmission rods, the outer end of the oil filling shell is provided with a circular through hole corresponding to the oil distributing end cover, and the inner wall of the circular through hole at the outer end of the compression area is provided with internal threads.
As a preferable scheme of the excavator walking automatic oiling device, the excavator walking automatic oiling device comprises the following steps: the main filler pipe is in communication with the compression zone.
As a preferable scheme of the automatic oiling device for the walking of the excavator, the automatic oiling device comprises the following steps: divide oil end cover threaded connection in the one end inner wall in compression zone, the outer end of dividing the oil end cover is provided with the bulge loop, and one side that the bulge loop was towards the shell of annotating oil is provided with rubber seal.
As a preferable scheme of the excavator walking automatic oiling device, the excavator walking automatic oiling device comprises the following steps: a plurality of branch pipe joints are arranged on two sides of the oil way distributor, and the branch pipe joints are respectively connected with a separate injection oil pipe; divide injection oil pipe's outer end to be provided with and to divide the union coupling head, and divide union coupling head and the last oiling mouth threaded connection of excavator running gear.
As a preferable scheme of the excavator walking automatic oiling device, the excavator walking automatic oiling device comprises the following steps: the transition pipe and the separate injection oil pipe are both sealing hoses, and the oil way distributor is arranged at the center of a plurality of oil injection port positions on one side of the excavator walking mechanism.
In order to solve the technical problems, the invention provides the following technical scheme: the control system of the walking automatic oiling device of the excavator comprises the walking automatic oiling device of the excavator and further comprises a driving unit, wherein the output end of the driving unit is connected with the input end of the oiling unit and comprises a pneumatic oil pump, the input end of the pneumatic oil pump is connected with an air compressor through an air supply pipeline, the output end of the pneumatic oil pump is connected with a compression area through a main oiling pipe, and the main oiling pipe is provided with a hydraulic reversing valve; and the control unit can control the start and stop of the pneumatic oil pump and comprises a three-phase air switch, an alternating current contactor and a time relay.
As a preferable scheme of the control system of the automatic oiling device for the walking of the excavator, the control system comprises the following steps: the pneumatic oil pump is located in the lubricating oil tank, and the air supply pipeline is provided with an air path electromagnetic valve.
As a preferable scheme of the control system of the automatic oiling device for the walking of the excavator, the control system comprises the following steps: the three-phase air switch comprises a first live wire, a second live wire, a third live wire and a zero line, wherein the first live wire is connected with an alternating current contactor, the third live wire is connected with a time relay, and a time relay contact and an air circuit electromagnetic valve contactor are connected in series between the second live wire and the zero line.
In order to solve the technical problems, the invention provides the following technical scheme: a control method of an excavator walking automatic oiling device is realized through the excavator walking automatic oiling device control system, and comprises the following steps that when an excavator electric shovel is changed into a walking mode, a pneumatic oil pump contactor is powered on, and meanwhile, three-phase air power is powered on; the time relay starts timing, every 5 minutes, the time relay contact KT1 is closed to supply power for 1 minute, the air circuit electromagnetic valve contactor is closed after being electrified, the pneumatic oil pump is electrified and started for 1 minute, and the grease enters a compression area through the main oil injection pipe to be temporarily stored; after 1 minute, the compression area is filled with grease, the output end of the time relay stops supplying power, and the oil pump is closed; starting a driving shaft in an interval period of 5 minutes, pushing a compression piston to inject grease in a compression area into an oil way distributor and distribute the grease to each oil injection port of the excavator walking mechanism, and entering the next cycle after the minutes are finished; when the walking mode is stopped, the pneumatic oil pump contactor loses power, the three-phase air switch loses power, and the time relay stops timing.
The invention has the beneficial effects that:
the invention controls the start and stop of the pneumatic oil pump by adjusting the power supply time of the output end of the time relay so as to adjust the oil injection time and the oil injection amount; the synchronous automatic start and stop of a walking mode and a walking mechanism oiling system are realized by directly connecting a three-phase air switch at the lower end of an original walking lubricating oil pump contactor and controlling a pneumatic oil pump by a time relay. Therefore, on the one hand, the labor intensity of personnel is reduced, on the other hand, the lubricating effect and efficiency of the electric shovel travelling mechanism are improved, meanwhile, the grease waste is reduced, and the grease utilization rate is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of the overall structure of the automatic oiling device for excavator walking according to the present invention;
FIG. 2 is a cross-sectional view of the automatic oiling device for excavator walking according to the present invention;
FIG. 3 is a side view of an oiling unit of the automatic oiling device for excavator walking according to the present invention;
FIG. 4 is a schematic view of a branch pipe connector of an oil distribution unit of the automatic oiling device for excavator walking according to the present invention;
FIG. 5 is a schematic view of the connecting components of the control system of the automatic oiling device for excavator walking according to the present invention;
FIG. 6 is a process schematic diagram of the control system of the automatic oiling device for excavator walking according to the present invention;
FIG. 7 is a schematic diagram of a time relay circuit of the control system of the automatic oiling device for excavator walking according to the present invention;
FIG. 8 is a flowchart of a control method of the automatic oiling device for excavator walking according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and it will be appreciated by those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the present invention and that the present invention is not limited by the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 to 4, for the first embodiment of the present invention, the first embodiment provides an excavator walking automatic oiling device, which includes an oiling unit 100, which includes an oiling shell 101, the inner cavity of the oiling shell 101 is slidably connected with a compression piston 102, the compression piston 102 divides the inner cavity of the oiling shell 101 into a compression area S and a driving area T, the upper and lower parts of the compression area S are rotatably installed with a transmission rod 103 through a sealed bearing, the transmission rod 103 penetrates through the driving area T, two ends of the compression piston 102 are provided with threaded holes, two ends of the compression piston 102 are in threaded connection with the transmission rod 103, and the oiling shell 101 is provided with a main oiling pipe 106; the oil distribution unit 200 comprises an oil path distributor 201, an oil distribution end cover 202, a transition pipe 203, a distribution oil pipe 204 and a distribution pipe connector 205, wherein one end of the oil path distributor 201 is connected with the oil distribution end cover 202 through the transition pipe 203, a plurality of distribution oil pipes 204 are symmetrically distributed on the oil path distributor 201, and the distribution oil pipes 204 are connected with an oil injection port of the excavator walking mechanism through the distribution pipe connector 205.
A driving shaft 105 is arranged at the center of the compression area S, and the driving shaft 105 is in synchronous transmission connection with the end parts of the two transmission rods 103 through a transmission gear assembly 104; the two sides of the inner cavity of the compression area S are provided with semicircular cavities corresponding to the transmission rod 103, the outer end of the oil filling shell 101 is provided with a circular through hole corresponding to the oil distribution end cover 202, and the inner wall of the circular through hole at the outer end of the compression area S is provided with internal threads.
The main filler pipe 106 communicates with the compression region S.
Oil distribution end cover 202 threaded connection is in the one end inner wall of compression zone S, and oil distribution end cover 202' S outer end is provided with the bulge loop, and one side of bulge loop orientation oil filling shell 101 is provided with rubber seal.
A plurality of branch pipe joints are arranged on two sides of the oil way distributor 201, and the branch pipe joints are respectively connected with a dispensing oil pipe 204; the outer end of the separate injection oil pipe 204 is provided with a branch pipe connector 205, and the branch pipe connector 205 is in threaded connection with an oil filling port on the excavator traveling mechanism.
The transition pipe 203 and the dispensing oil pipe 204 are both sealing hoses, and the oil way distributor 201 is arranged at the center of a plurality of oil filling port positions on one side of the excavator traveling mechanism.
Since the grease has a high viscosity and a long grease injection path, and is not effective only by the grease pump, an external power is required to ensure smooth grease injection, in which the driving shaft 105 and the compression piston 102 push the compression region S, and the power of the driving shaft 105 may be provided by another motor.
The compression piston 102 is screwed at both ends to the driving rod 103, which is a screw structure and the grease in the compression area S can lubricate.
When the compression piston 102 moves to approach the oil distribution end cover 202, the oil pressing process is finished, and the next time of oil pressing is started, the compression piston 102 needs to return to the initial position, namely, one end far away from the oil distribution end cover 202, a lubricating oil pump can be directly used, because the volume of the oil injection shell 101 is not large, the resistance is overcome, the oil pressing process is not large, the volume of the compression area S can be expanded in the oil injection process, and the compression piston 102 moves reversely to return to the driving area T.
During oil filling, although the transition pipe 203 is still communicated with the compression area S through the oil distribution end cover 202, grease entering the transition pipe 203 from the compression area S can be ignored, and because the transition pipe 203 is thin, the power from the lubricating oil pump is not enough to overcome the resistance of the transition pipe 203, so that the grease can still be ensured to fill the compression area S. Therefore, the oil separation process or the oil pressing process can be performed only in one direction from the end far away from the oil separation end cover 202 to the end near the oil separation end cover 202.
Of course, in an emergency situation, such as when the lubrication pump fails and needs to be filled, the oil can be manually filled by the oil gun and also can be filled into the compression area S of the oil filling shell 101 through the main oil pipe 106.
The outer end of the oil distribution end cover 202 is provided with a convex ring, one side of the convex ring facing the oil injection shell 101 is provided with a rubber sealing ring, and the oil distribution end cover 202 is screwed in under the thread fit, so that the rubber sealing ring and the edge of the circular through hole can be compressed and sealed.
The caterpillar bands on two sides of the WK-10 type excavator have 12 oil injection points, so that the outer end of the injection oil pipe 204 is provided with a branch pipe connector 205, and the branch pipe connector 205 is in threaded connection with an oil injection port on the excavator walking mechanism. The branch pipe connector 205 can be selected according to different types of oil filling ports.
The sealing hoses used by the transition pipe 203 and the separate injection oil pipe 204 are generally steel wire hoses, so that the strength can be ensured to achieve sealing without leakage, and the sealing hoses can be bent to ensure that the sealing hoses are suitable for complex working conditions.
To sum up, this oiling device's theory of action:
lubricating grease is injected into a compression area S for temporary storage through a main oil injection pipe 106, a driving shaft 105 is externally connected with a motor after the compression area S is filled with the lubricating grease, the driving shaft 105 is in synchronous transmission connection with the end parts of two transmission rods 103 through a transmission gear assembly 104, the two transmission rods 103 can cause a compression piston 102 to move towards an oil distribution end cover 202, so that the grease in the compression area S enters an oil way distributor 201 along a transition pipe 203, and then is injected into an oil injection port in an excavator walking mechanism through a plurality of oil distribution oil pipes 204, and the excavator can obtain corresponding lubrication during walking.
Example 2
Referring to fig. 5 to 7, for a second embodiment of the present invention, the embodiment provides a control system for an excavator walking automatic oiling device, including the excavator walking automatic oiling device described in embodiment 1, further including a driving unit 300, an output end of which is connected to an input end of an oiling unit 100, including a pneumatic oil pump 301, an input end of the pneumatic oil pump 301 is connected to an air compressor 302 through an air supply line 303, an output end of the pneumatic oil pump 301 is connected to a compression region S through a main oiling pipe 106, the main oiling pipe 106 is provided with a hydraulic directional control valve 304;
and the control unit 400 can control the start and stop of the pneumatic oil pump 301 and comprises a three-phase air switch 401, an alternating current contactor KM1 and a time relay KT.
The pneumatic oil pump 301 is positioned in the lubricating oil tank X, and the air supply pipeline 303 is provided with an air pipeline electromagnetic valve 303a.
The three-phase air switch 401 comprises a first live wire L1, a second live wire L2, a third live wire L3 and a zero line N, the first live wire L1 is connected with an alternating current contactor KM1, the third live wire L2 is connected with a time relay KT, and a time relay contact KT1 and a gas circuit electromagnetic valve contactor KM2 are connected between the second live wire L2 and the zero line N in series.
The control here does not directly control the start-stop of the pneumatic oil pump 301, but ensures that the contactor of the pneumatic oil pump 301 is always electrified, but intermittently controls the air source required by the operation of the pneumatic oil pump 301, namely the air path electromagnetic valve 303a on the air supply line 303.
In order to ensure that the excavator can be lubricated when normally working and walking, the control process is also related to whether the excavator is in a walking mode: and if the contactor of the pneumatic oil pump 301 is electrified, the contactor is directly hooked with the excavator in a walking mode. Specifically, when the excavator is in a walking mode, the pneumatic oil pump 301 contactor is powered on, and otherwise, the contactor is powered off. This also avoids inefficient refueling.
The working principle of the control system is as follows:
the contactor of the pneumatic oil pump 301 is powered on, the three-phase air switch 401 is powered on, the time relay KT starts to time for 5 minutes through the third live wire L2, after 5 minutes, the time relay contact KT1 is closed, power is supplied for 1 minute, the air circuit electromagnetic valve contactor KM2 is powered on and then is closed, so that the air supply pipeline 303 is unblocked, the pneumatic oil pump 301 is correspondingly started for 1 minute, lubricating grease is injected into a compression area S of the oil injection shell 101 along the main oil injection pipe 106, after 1 minute, oil injection is finished, in an interval period of 5 minutes in the next cycle, the relay KT1 is disconnected, namely, the air circuit electromagnetic valve contactor KM2 is disconnected after power loss, so that the air supply pipeline 303 is closed, and the pneumatic oil pump 301 is closed; at the moment, an external motor starts a driving shaft 105, the driving shaft 105 is in synchronous transmission connection with the end parts of two transmission rods 103 through a transmission gear assembly 104, the two transmission rods 103 can cause the compression piston 102 to move towards the oil distribution end cover 202, so that grease in a compression area S enters an oil way distributor 201 along a transition pipe 203, and then is injected into an oil injection port on an excavator walking mechanism through a plurality of oil distribution pipes 204, and the excavator can obtain corresponding lubrication during walking.
Example 3
Referring to fig. 8, a third embodiment of the present invention provides a method for controlling an automatic oiling device for excavator walking, which is characterized in that: the control system is realized by the control system of the walking automatic oiling device of the excavator in the embodiment 2, and comprises the following steps that when an electric shovel of the excavator is changed into a walking mode, a contactor of a pneumatic oil pump 301 is powered on, and meanwhile, a three-phase air switch 401 is powered on; the time relay KT starts timing, the time relay contact KT1 is closed to supply power for 1 minute every 5 minutes, the air circuit electromagnetic valve contactor KM2 is closed after being electrified, so that the pneumatic oil pump is electrified and started for 1 minute, and the grease enters the compression area S through the main oil injection pipe 106 to be temporarily stored; after one minute, the compression area S is filled with grease, the output end of the time relay KT stops supplying power, and the pneumatic oil pump 301 is turned off; starting the driving shaft 105 in an interval period of 5 minutes, pushing the compression piston 102 to inject grease in a compression area S into the oil way distributor 201, redistributing the grease to each oil injection port of the excavator walking mechanism, and entering the next cycle after 5 minutes; when the walking mode is stopped, the pneumatic oil pump contactor loses power, the three-phase air switch 401 loses power, and the time relay KT stops timing.
In consideration of the amount of oil filling, a conventional method of always starting the lubricating oil pump is not adopted, but a method of indirectly starting the pneumatic oil pump 301 is adopted, thus ensuring an appropriate amount of oil filling.
In addition, the traditional oil pump directly injects oil into each oil injection port through the oil way distributor 301, so that the buffer space is ensured to a certain extent, but the volume of the oil way distributor 301 is limited, and the space and the time of oil injection and oil distribution cannot be completely staggered, so that the space and the time of oil injection and oil distribution are more reasonably staggered by adopting the mode of oil injection in 1 minute and oil distribution in 5 minutes (oil pressing).
Whole process need not manual operation, has improved work efficiency greatly, has reduced working strength, can avoid once only pouring into lubricating oil much more simultaneously, the waste of the lubricating oil that leads to, more economic environmental protection.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides an automatic oiling device of excavator walking which characterized in that: comprises the steps of (a) preparing a substrate,
the oil injection unit (100) comprises an oil injection shell (101), a compression piston (102) is connected to an inner cavity of the oil injection shell (101) in a sliding mode, the inner cavity of the oil injection shell (101) of the compression piston (102) is divided into a compression area (S) and a driving area (T), a transmission rod (103) is rotatably installed on the upper portion and the lower portion of the compression area (S) through a sealing bearing, the transmission rod (103) penetrates through the driving area (T), threaded holes are formed in two ends of the compression piston (102), two ends of the compression piston (102) are in threaded connection with the transmission rod (103), and a main oil injection pipe (106) is arranged on the oil injection shell (101);
divide oil unit (200), including oil circuit distributor (201), branch oil end cover (202), transition pipe (203), divide oil pipe (204) and divide union coupling head (205) to divide, oil circuit distributor (201) one end is passed through transition pipe (203) and is linked to each other with branch oil end cover (202), oil circuit distributor (201) is gone up the symmetric distribution and is had a plurality of oil pipe (204) of dividing, divide oil pipe (204) to link to each other with excavator running gear oiling mouth through dividing union coupling head (205).
2. The automatic oiling device for excavator walking of claim 1, characterized in that: a driving shaft (105) is arranged at the center of the compression area (S), and the driving shaft (105) is in synchronous transmission connection with the end parts of the two transmission rods (103) through a transmission gear assembly (104);
the oil injection structure is characterized in that semicircular cavities are formed in the two sides of the inner cavity of the compression area (S) corresponding to the transmission rod (103), a circular through hole is formed in the outer end of the oil injection shell (101) corresponding to the oil distribution end cover (202), and internal threads are formed in the inner wall of the circular through hole in the outer end of the compression area (S).
3. The automatic oiling device for excavator walking of claim 2, wherein: the main filler pipe (106) communicates with the compression zone (S).
4. The automatic oiling device for excavator walking of any of claims 1-3, wherein: divide oil end cover (202) threaded connection in the one end inner wall of compression zone (S), the outer end of dividing oil end cover (202) is provided with the bulge loop, and one side that the bulge loop was towards annotating oil shell (101) is provided with rubber seal.
5. The automatic oiling device for excavator walking of claim 4, characterized in that: a plurality of branch pipe joints are arranged on two sides of the oil way distributor (201), and the branch pipe joints are respectively connected with a dispensing oil pipe (204);
the outer end of the separate injection oil pipe (204) is provided with a branch pipe connector (205), and the branch pipe connector (205) is in threaded connection with an oil filling port on the excavator walking mechanism.
6. The automatic oiling device for excavator walking of any of claims 1-3 and 5, wherein: the transition pipe (203) and the separate injection oil pipe (204) are both sealing hoses, and the oil way distributor (201) is arranged at the center of a plurality of oil injection port positions on one side of the excavator walking mechanism.
7. The utility model provides an automatic oiling device control system of excavator walking which characterized in that: the automatic oiling device for the walking of the excavator as claimed in any one of claims 1 to 6, further comprising,
the output end of the driving unit (300) is connected with the input end of the oil injection unit (100) and comprises a pneumatic oil pump (301), the input end of the pneumatic oil pump (301) is connected with an air compressor (302) through an air supply pipeline (303), the output end of the pneumatic oil pump (301) is connected with a compression area (S) through a main oil injection pipe (106), and the main oil injection pipe (106) is provided with a hydraulic reversing valve (304);
the control unit (400) can control the start and stop of the pneumatic oil pump (301), and comprises a three-phase air switch (401), an alternating current contactor (KM 1) and a time relay (KT).
8. The control system of the excavator walking automatic oiling device of claim 7, wherein: the pneumatic oil pump (301) is located in the lubricating oil tank (X), and the air supply pipeline (303) is provided with an air circuit electromagnetic valve (303 a).
9. The excavator walking automatic oiling device control system of claim 8, wherein: three phase air opens (401) including first live wire (L1), second live wire (L2), third live wire (L3) and zero line (N), first live wire (L1) links to each other with ac contactor (KM 1), third live wire (L2) links to each other with time relay (KT), it has time relay contact (KT 1) and gas circuit solenoid valve contactor (KM 2) to establish ties between second live wire (L2) and zero line (N).
10. A control method of an automatic oiling device for excavator walking is characterized by comprising the following steps: the control system of the walking automatic oiling device of the excavator comprises the following steps,
when an excavator electric shovel is changed into a walking mode, a pneumatic oil pump contactor is powered on, and meanwhile, a three-phase air switch (401) is powered on;
timing is started by a time relay (KT), every 5 minutes, a time relay contact (KT 1) is closed to supply power for 1 minute, a gas circuit electromagnetic valve contactor (KM 2) is powered on and then is attracted, so that a pneumatic oil pump is powered on and started for one minute, and grease enters a compression area (S) through a main oil injection pipe (106) to be temporarily stored;
after 1 minute, the compression area (S) is filled with grease, the output end of the time relay (KT) stops supplying power, and the oil pump is closed;
starting a driving shaft (105) within an interval period of 5 minutes, pushing a compression piston (102) to inject grease in a compression area (S) into an oil way distributor (201) and redistribute the grease to each oil injection port of an excavator walking mechanism, and entering the next cycle after 5 minutes are finished;
when the walking mode is stopped, the pneumatic oil pump contactor loses power, the three-phase air switch (401) loses power, and the time relay (KT) stops timing.
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