CN111947009A

CN111947009A - Gearbox oil change method and gearbox oil change equipment

Info

Publication number: CN111947009A
Application number: CN202010802126.6A
Authority: CN
Inventors: 张绍誉
Original assignee: Guangzhou Balanshi Machinery Co ltd
Current assignee: Guangzhou Balanshi Machinery Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-17

Abstract

The invention discloses a gearbox oil change method and gearbox oil change equipment. A transmission oil change method comprising: firstly, pumping oil from a gearbox through a joint and an oil return pipeline; secondly, injecting oil into the gearbox through the joint and the oil injection pipeline; and step three, repeatedly executing the step one and the step two for a plurality of times. Has the advantages that: the oil pumping process and the oil injection process are realized by the same joint, so that the connection mode between the gearbox and the oil changing equipment of the gearbox can be simplified, and the connection mode and the connection position between the joint and the gearbox are more flexible; the joint can extend into the gearbox through the liquid level observation port of the gearbox, so that the number of applicable vehicle types of the joint is increased, the purchasing cost of the joint is reduced, the assembling and disassembling working hours of the joint can be shortened, and the misoperation risk of joint connection can be reduced; because the joint can be connected with the gearbox through the liquid level observation port, the oil in the gearbox can be replaced by bypassing the thermostat. The invention relates to automobile maintenance.

Description

Gearbox oil change method and gearbox oil change equipment

Technical Field

The invention relates to automobile maintenance, in particular to a gearbox oil changing method and gearbox oil changing equipment.

Background

In order to achieve a more complete oil change during a transmission oil change, the transmission is usually required to be operated during the oil change process to keep the oil in the transmission in a stirred state. If the oil is completely drained out of the transmission, the transmission is prone to damage during operation. Therefore, during the oil change of the gearbox, the gearbox needs to be kept running, and a certain amount of oil needs to be kept in the gearbox.

In the prior art, if the oil needs to be changed for the automatic gearbox of the automobile, the oil can be changed automatically through equipment besides the manual oil changing in a gravity oil discharging mode.

In the prior art, the principle of mainstream oil change equipment is basically the same, namely a circulating oil pipeline of a gearbox is required to be disconnected, then an oil return pipe and an oil injection pipe of the oil change equipment are connected into the circulating oil pipeline of the gearbox, and then oil change of the gearbox is realized under a dynamic state. The prior art oil change equipment usually needs to inject new oil into the gearbox through an oil filling pipe, and meanwhile, old oil in the gearbox needs to flow back to the oil change equipment through an oil return pipe.

The technical defects of the oil change equipment in the prior art are as follows:

firstly, the vehicles on the market are numerous, the joints at the disconnected positions of the oil pipes of the gearbox are different, so that equipment needs to be provided with a large number of various joints to prevent from time to time, the purchase cost is increased for users, and meanwhile, because the disconnected positions of the oil pipes of different gearboxes are different, the adopted joints are different, operators have certain basic knowledge of the gearbox of the vehicle, and the risk of damage to the gearbox caused by insufficient experience or knowledge of the operators is reduced;

secondly, the disassembly and assembly of the joint consumes a long time, so that the whole oil change working hour is prolonged, the operation cost is increased, and the pipeline of the vehicle gearbox needs to be strictly checked for leakage due to the disassembly and assembly, otherwise, the hidden danger of oil leakage is easily left;

thirdly, the thermostat needs to be opened only when reaching a certain temperature, otherwise, oil in partial pipelines in the gearbox cannot be discharged. For some vehicle types with thermostats, oil needs to be preheated to a certain temperature through equipment, otherwise, oil change operation cannot be smoothly completed or oil change is not thorough, and meanwhile, the efficiency is reduced due to the prolonging of operation time, and the operation cost of a user is increased;

fourthly, for operators with less experience, the hidden danger that the gearbox is damaged because the potential condition that the oil level of the gearbox is checked to be normal or not is easily generated after oil change is avoided, and the gearbox runs in an oil-deficient or oil-full state is caused.

In summary, the technical defects of the prior art gearbox oil change device are as follows: the joint between the gearbox oil change equipment and the gearbox is complex, and oil change can be realized only by using a special joint, so that the joint has the advantages of higher purchase cost, longer assembly and disassembly time consumption and easiness in misoperation; the channel used by the oil change equipment in the prior art usually needs to pass through a thermostat which can be opened only when reaching a certain temperature, so that the oil temperature is strictly limited, and the structure of the oil change equipment is complicated; the amount of oil in the gearbox is prone to be abnormal, so that the gearbox can be damaged.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art and provides a gearbox oil change method and a gearbox oil change device which are beneficial to simplifying a joint, simplifying connection with an automobile, simplifying the structure of the oil change device and controlling the oil quantity in a gearbox.

The technical scheme adopted for solving the technical problems is as follows:

a transmission oil change method comprising:

firstly, pumping oil from a gearbox through a joint and an oil return pipeline;

secondly, injecting oil into the gearbox through the joint and the oil injection pipeline;

and step three, repeatedly executing the step one and the step two for a plurality of times.

The gearbox oil change method at least has the following beneficial effects:

the oil pumping process and the oil injection process are realized by the same joint, so that the connection mode between the gearbox and the oil changing equipment of the gearbox can be simplified, and the connection mode and the connection position between the joint and the gearbox are more flexible; because a single joint is used, the joint can extend into the gearbox through a liquid level observation port of the gearbox, so that the number of applicable vehicle types of the joint is increased, the purchasing cost of the joint is reduced, the assembling and disassembling working hours of the joint can be shortened, and the misoperation risk of joint connection can be reduced; because the joint can be connected with the gearbox through the liquid level observation port, the oil in the gearbox can be replaced by bypassing the thermostat, and the oil temperature limitation in the oil replacing process can be avoided.

In one possible embodiment of the invention, the gearbox is filled with oil through the fitting and the oil filling line before the first, second and third steps are carried out. Oil change of the gearbox can be realized by injecting oil or pumping oil first.

In one possible embodiment of the invention, the amount of oil in the transmission after completion of step one is greater than or equal to 45% and less than or equal to 100% of the normal amount of oil, and the amount of oil in the transmission after completion of step three is within the range of the normal amount of oil.

Gearbox equipment of changing oil includes:

the first joint can be connected with the gearbox;

the first oil return pipeline is provided with a first valve body and a first pump body, and the first pump body can drive liquid to pass through the first connector and the first valve body;

the first oil injection pipeline is provided with a third valve body and a second pump body, the second pump body can drive liquid to pass through the third valve body and the first joint, a first intersection point is arranged between the first oil return pipeline and the first oil injection pipeline, and the first intersection point is arranged among the first joint, the first valve body and the third valve body.

The gearbox oil change equipment at least has the following beneficial effects:

the first pump body can drive liquid to flow in the first oil return pipeline, so that oil pumping of the gearbox by the oil changing equipment is realized; the second pump body can drive liquid to flow in the first oil filling pipeline, so that oil filling of the gearbox by the oil changing equipment is realized; the first valve body and the third valve body are switchable between an open state and a closed state, thereby enabling the first oil return line and the first oil filling line to operate independently of each other.

In a possible embodiment of the present invention, the transmission oil change apparatus further includes a first oil discharge line, a second intersection point is disposed between the first oil discharge line and the first oil return line, the second intersection point is disposed between the first valve body and the first pump body, and the first pump body can drive the liquid to flow in the first oil discharge line when the first valve body is closed. The first valve body can control the working condition of the first oil discharge pipeline by switching the opening and closing states, and the first oil discharge pipeline can discharge the old oil in the first liquid storage device through the first pump body.

In a possible implementation manner of the invention, the gearbox oil change device further comprises a thirteenth valve body and a second liquid storage device, one end of the second pump body is communicated with the second liquid storage device, one end of the thirteenth valve body is communicated with the second liquid storage device, and one end of the thirteenth valve body is communicated with the second intersection point. The second liquid storage device can store new oil and provide the new oil for the second pump body; the thirteenth valve body can be communicated with the first pump body through a second intersection point, and the second liquid storage device, the thirteenth valve body and the first pump body can form an oil discharge pipeline, so that new oil in the second liquid storage device can be discharged.

Gearbox equipment of changing oil includes:

the second joint can be connected with the gearbox;

the third pump body can realize positive rotation and negative rotation, the sixth valve body is a reversing valve, the number of liquid channels in the sixth valve body is more than or equal to two, and the third pump body can drive liquid to be pumped out from the gearbox through a second joint;

and the sixth valve body can enable the third pump body to be switched between the second oil return pipeline and the second oil injection pipeline through switching the liquid channel.

The gearbox oil change equipment at least has the following beneficial effects:

the third pump body has corotation and reversal function, can realize the oil return through the corotation, can realize oiling and oil extraction through the reversal to can reduce the quantity of pump, be favorable to simplifying the overall structure of gearbox oil change equipment.

In a possible implementation manner of the present invention, the transmission oil change device further includes a fourteenth valve body and a second oil discharge pipeline, the fourteenth valve body is disposed between the second joint and the third pump body, the second oil discharge pipeline is provided with a seventh valve body, the third pump body and the sixth valve body are disposed on the second oil discharge pipeline, and the third pump body can drive liquid to sequentially pass through the sixth valve body and the seventh valve body. The fourteenth valve body can cut off a passage between the second joint and the third pump body, and can prevent the oil from leaking through the second joint; the seventh valve body can control the on-off of the second oil drainage pipeline, when the seventh valve body is opened, the third pump body can drive liquid to sequentially pass through the sixth valve body, the third pump body and the seventh valve body from the third liquid storage device, and therefore old oil in the third liquid storage device can be drained.

Gearbox equipment of changing oil includes:

the third joint can be connected with the gearbox;

the fourth pump body is arranged between the eighth valve body and the ninth valve body, and can pump liquid out of the gearbox and enable the liquid to pass through the third joint, the eighth valve body and the ninth valve body;

and the fourth pump body can drive liquid to flow through the tenth valve body and the eleventh valve body and flow into the gearbox through the third joint.

The gearbox oil change equipment at least has the following beneficial effects:

the eighth valve body and the ninth valve body are opened simultaneously, and the tenth valve body and the eleventh valve body are closed simultaneously, so that the oil pumping function of the third oil return pipeline can be realized; the tenth valve body and the eleventh valve body are opened simultaneously, and the eighth valve body and the ninth valve body are closed simultaneously, so that the oil injection function of the third oil injection pipeline can be realized; the oil return and the oil injection can be realized through the switching state switching of the eighth valve body, the ninth valve body, the tenth valve body and the eleventh valve body, and the overall structure of the oil changing equipment of the gearbox is favorably simplified.

In a possible implementation manner of the present invention, the transmission oil change device further includes a third oil discharge pipeline, a twelfth valve body is disposed on the third oil discharge pipeline, the tenth valve body and the fourth pump body are also disposed on the third oil discharge pipeline, the fourth pump body is disposed between the tenth valve body and the twelfth valve body, and the fourth pump body can drive liquid to flow through the tenth valve body and the twelfth valve body. The tenth valve body and the twelfth valve body are in an open state, and when the eighth valve body, the ninth valve body and the eleventh valve body are closed, the fourth pump body can drive liquid to flow along the third oil discharge pipeline, so that the liquid in the fifth liquid storage device can be discharged out of the gearbox oil change equipment.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic view of an operating state of a first oil return line according to embodiment 1 of the present invention;

fig. 2 is a schematic view of the working state of the first oil injection line according to embodiment 1 of the present invention;

fig. 3 is a schematic view of an operating state of the first oil discharge line according to embodiment 1 of the present invention;

fig. 4 is a schematic view of an operating state of a second oil return line according to embodiment 2 of the present invention;

fig. 5 is a schematic view of the operating state of the second oil injection line according to embodiment 2 of the present invention;

fig. 6 is a schematic view showing an operating state of the second oil discharge line according to embodiment 2 of the present invention;

fig. 7 is a schematic view of an operating state of a third oil return line according to embodiment 3 of the present invention;

fig. 8 is a schematic view of the operating state of the third oil injection line according to embodiment 3 of the present invention;

fig. 9 is a schematic view showing an operating state of a third oil discharge line according to embodiment 3 of the present invention;

reference numerals:

the device comprises a first joint 1, a first valve body 2, a first cleanliness detection device 3, a first filtering device 4, a first pump body 5, a second valve body 6, a first liquid storage device 7, a second liquid storage device 8, a second filtering device 9, a second pump body 10, a third valve body 11, a first intersection point 12, a third filtering device 13, a fourth valve body 14, a second intersection point 15, a third intersection point 16, a fifth valve body 17 and a thirteenth valve body 44;

a second joint 18, a fourth filtering device 19, a fourth intersection point 20, a third pump body 21, a sixth valve body 22, a fifth filtering device 23, a third liquid storage device 24, a fourth liquid storage device 25, a sixth filtering device 26, a seventh valve body 27 and a fourteenth valve body 45;

a third joint 28, a fifth intersection 29, a second cleanliness detection device 30, a seventh filter device 31, an eighth valve body 32, a sixth intersection 33, a fourth pump body 34, a seventh intersection 35, a ninth valve body 36, a fifth reservoir 37, a sixth reservoir 38, an eighth filter device 39, a tenth valve body 40, an eleventh valve body 41, a ninth filter device 42, and a twelfth valve body 43.

Detailed Description

Example 1:

reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 to 3, a method for changing oil in a transmission includes:

firstly, pumping oil from a gearbox through a joint and an oil return pipeline;

The gearbox oil change method at least has the following beneficial effects:

With respect to the fitting, the fitting may alternatively be, but is not limited to, a pipe having a single passageway. The joint can be communicated with the inner cavity of the gearbox through any opening on the gearbox. The connection location between the adapter and the transmission can be selected from, but not limited to, a fluid level sight port on the transmission.

Regarding the oil return pipeline, the oil return pipeline refers to a pipeline capable of realizing an oil pumping function. The oil return pipeline can pump out the old oil from the gearbox.

Regarding the oil injection pipeline, the oil injection pipeline refers to a pipeline capable of realizing an oil injection function. The oil injection pipeline can inject new oil into the gearbox.

Regarding the normal oil quantity, the normal oil quantity refers to an oil quantity interval in which the gearbox can normally work. The standard for proper fuel flow is typically established by the manufacturer of the transmission according to the specific configuration of the transmission. The oil change method of the gearbox should ensure that the gearbox is restored to be within a normal oil quantity interval after oil change is finished. The oil pumping amount and the oil injection amount at each time are required to keep the oil amount in the gearbox close to the normal oil amount, so that the total oil amount in the gearbox fluctuates within a determined range, the normal operation of the gearbox is favorably kept, and the gearbox is prevented from being damaged due to overlarge oil amount fluctuation.

The oil change method of the gearbox is characterized in that the oil pumping amount in the step one and the oil injection amount in the step two are automatically controlled by the control system in an electronic control mode, so that the automation degree can be improved, the oil metering accuracy can be improved, the oil amount in the gearbox can be accurately controlled, the oil change efficiency of the gearbox can be improved, and the risk of damage to the gearbox can be reduced.

Gearbox equipment of changing oil includes:

the first joint 1, the first joint 1 can be connected with the gear box;

the first oil return pipeline is provided with a first valve body 2 and a first pump body 5, and the first pump body 5 can drive liquid to pass through the first connector 1 and the first valve body 2;

the first oil injection pipeline is provided with a third valve body 11 and a second pump body 10, the second pump body 10 can drive liquid to pass through the third valve body 11 and the first connector 1, a first intersection point 12 is arranged between the first oil return pipeline and the first oil injection pipeline, and the first intersection point 12 is arranged among the first connector 1, the first valve body 2 and the third valve body 11.

The gearbox oil change equipment at least has the following beneficial effects:

the first pump body 5 can drive liquid to flow in the first oil return pipeline, so that oil pumping of the gearbox by the oil change equipment is realized; the second pump body 10 can drive liquid to flow in the first oil filling pipeline, so that oil filling of the gearbox by the oil changing equipment is realized; the first valve body 2 and the third valve body 11 can be switched between an open state and a closed state, so that the first return line and the first filling line can be operated independently of each other.

With respect to the first joint 1, the first joint 1 can communicate with the transmission case through a fluid level sight port.

Regarding the first oil return line, the first joint 1, the first valve body 2, the first cleanliness detection device 3, the first filter device 4, the first pump body 5, the second valve body 6, and the first liquid storage device 7 are sequentially provided on the first oil return line. The first pump body 5 is able to drive the liquid to be drawn from the inside of the gearbox into the first reservoir 7 in the direction a1 shown in fig. 1, with the third valve body 11, the fourth valve body 14 and the fifth valve body 17 closed and the first valve body 2 and the second valve body 6 open.

Regarding the first valve body 2, the first valve body 2 can be selected from, but not limited to, solenoid valves, and can realize circuit control.

With respect to the first cleanliness detecting means 3, the first cleanliness detecting means 3 may be, but is not limited to, a cleanliness detecting device capable of detecting particulate contamination in a fluid.

With respect to the first filter device 4, the first filter device 4 can be selected from, but not limited to, filters capable of filtering solid particles in the oil.

With respect to the first pump body 5, the first pump body 5 may be, but is not limited to, a liquid pump capable of driving a flow of liquid in the first oil return line.

With respect to the second valve body 6, the second valve body 6 may be selected from, but not limited to, solenoid valves, and can be electrically controlled.

With respect to the first fluid reservoir 7, the first fluid reservoir 7 may be, but is not limited to, an oil drum, which can be used to contain old oil drawn from the transmission.

Regarding the first oil injection line, the second liquid storage device 8, the second filtering device 9, the second pump body 10, and the third valve body 11 are sequentially provided on the first oil injection line. A first intersection point 12 is arranged between the first oil injection pipeline and the first oil return pipeline, and the first intersection point 12 is arranged between the first connector 1 and the first valve body 2. The second pump body 10 is able to drive liquid from the second reservoir 8 into the gearbox in the direction B1 shown in figure 2, with the first valve body 2 closed and the third valve body 11 open.

With respect to the second reservoir 8, the second reservoir 8 may be, but is not limited to, an oil drum that can be used to contain new oil to be injected into the transmission.

With respect to the second filtering device 9, the second filtering device 9 can be selected from, but not limited to, a filter capable of filtering solid particles in the oil. The second filter device 9 is arranged in the second liquid storage device 8.

With respect to the second pump body 10, the second pump body 10 may alternatively, but not exclusively, be a liquid pump capable of driving liquid flow in the first fill line.

Regarding the third valve body 11, the third valve body 11 can be selected from, but not limited to, solenoid valves, and can be electrically controlled. The first valve body 2 and the third valve body 11 can realize the switching of the first oil return line and the first oil injection line by opening and closing.

Regarding the first intersection 12, the connection mode at the first intersection 12 can be selected from, but not limited to, a tee joint. The first intersection point 12 is provided between the first joint 1 and the first valve body 2.

In a possible embodiment of the present invention, the transmission oil change device further includes a first oil discharge line, a second intersection 15 is disposed between the first oil discharge line and the first oil return line, the second intersection 15 is disposed between the first valve body 2 and the first pump body 5, and the first pump body 5 can drive liquid to flow in the first oil discharge line when the first valve body 2 is closed. The first valve body 2 can control the working condition of a first oil discharge pipeline by switching the opening and closing states, and the first oil discharge pipeline can discharge the old oil in the first liquid storage device 7 through the first pump body 5.

Regarding the first oil discharge line, a third filter device 13, a fourth valve body 14, a second intersection point 15, the first pump body 5, a third intersection point 16, and a fifth valve body 17 are provided in this order on the first oil discharge line. The first pump body 5 is capable of driving the liquid to be discharged from the first liquid storage device 7 in the direction C1 shown in fig. 3, wherein the first valve body 2 and the second valve body 6 are in the closed state, and the fourth valve body 14 and the fifth valve body 17 are in the open state.

With respect to the third filtering device 13, the third filtering device 13 can be, but is not limited to, a filter capable of filtering solid particles in the oil. The third filter device 13 is arranged in the first liquid storage device 7.

Regarding the fourth valve body 14, the fourth valve body 14 can be selected from, but not limited to, solenoid valves, and can be controlled by an electric circuit.

Regarding the second intersection 15, the connection mode at the second intersection 15 can be selected from, but not limited to, a tee joint. The second intersection point 15 is provided between the first filter device 4, the first pump body 5 and the fourth valve body 14.

Regarding the third intersection 16, the connection mode of the third intersection 16 can be selected from, but not limited to, a tee joint. The third intersection 16 is provided between the first pump body 5, the second valve body 6 and the fifth valve body 17.

With respect to the fifth valve body 17, the fifth valve body 17 may be selected from, but not limited to, diaphragm valves.

In a possible embodiment of the invention, the gearbox oil change device further comprises a thirteenth valve body 44 and a second reservoir 8, one end of the second pump body 10 is communicated with the second reservoir 8, one end of the thirteenth valve body 44 is communicated with the second reservoir 8, and one end of the thirteenth valve body 44 is communicated with the second intersection point 15. The second reservoir 8 is capable of storing and supplying new oil to the second pump body 10; the thirteenth valve body 44 can communicate with the first pump body 5 through the second intersection point 15, and the second reservoir 8, the thirteenth valve body 44, and the first pump body 5 can form an oil discharge line, so that new oil in the second reservoir 8 can be discharged.

Regarding the thirteenth valve body 44, the thirteenth valve body 44 may be selected from, but not limited to, solenoid valves. The thirteenth valve body 44 is arranged between the second pump body 10 and the second filter device 9. When new oil in the second liquid storage device 8 needs to be discharged, the first valve body 2, the second valve body 6 and the fourth valve body 14 are closed, the thirteenth valve body 44 and the fifth valve body 17 are opened, and the first pump body 5 is started, so that the new oil can be discharged to the outside of the gearbox oil changing equipment along the second filtering device 9, the thirteenth valve body 44, the first pump body 5 and the fifth valve body 17.

Example 2:

as shown in fig. 4 to 6, the transmission oil change apparatus includes:

a second coupling 18, the second coupling 18 being connectable to a gearbox;

the third pump body 21 can realize positive rotation and reverse rotation, the sixth valve body 22 is a reversing valve, the number of liquid channels in the sixth valve body 22 is more than or equal to two, and the third pump body 21 can drive liquid to be pumped out from the gearbox through the second joint 18;

and a second oil injection pipeline, a third pump body 21 and a sixth valve body 22 are arranged on the second oil injection pipeline, the third pump body 21 can drive liquid to be injected into the gearbox through the second joint 18, and the sixth valve body 22 can enable the third pump body 21 to be switched between the second oil return pipeline and the second oil injection pipeline through switching a liquid channel.

The gearbox oil change equipment at least has the following beneficial effects:

the third pump body 21 has the forward rotation and reverse rotation functions, and can return oil by forward rotation and fill oil and discharge oil by reverse rotation, thereby reducing the number of pumps and facilitating simplification of the overall structure of the transmission oil change equipment.

Regarding the second oil return line, a second joint 18, a fourth filter device 19, a fourth intersection 20, a third pump body 21, a sixth valve body 22, a fifth filter device 23, and a third reservoir device 24 are provided in this order on the second oil return line. The third pump body 21 is able to drive fluid from within the gearbox in the direction a2 shown in figure 4 to be drawn into the third reservoir 24, with the seventh valve body 27 closed and the sixth valve body 22 putting the third pump body 21 in communication with the fifth filter device 23.

With respect to the second connector 18, the second connector 18 can communicate with the transmission through a fluid level sight port.

With respect to the fourth filter device 19, the fourth filter device 19 may be, but is not limited to, a filter capable of filtering solid particles in a liquid.

Regarding the fourth intersection 20, the connection mode of the fourth intersection 20 can be selected from, but not limited to, a tee joint. The seventh valve body 27 can communicate with the second drain line through the fourth intersection point 20. The fourth intersection point 20 is provided between the fourth filter device 19 and the third pump body 21.

With respect to the third pump body 21, the third pump body 21 may be selected from, but not limited to, a liquid pump. The third pump body 21 can perform normal rotation and reverse rotation. The third pump body 21 can drive the liquid to flow along the second return line in the direction a2 shown in fig. 4 when rotating in the normal direction. The third pump body 21 is capable of driving the liquid along the second filler line in the direction B2 shown in FIG. 5 when reversed. The third pump body 21 is also able to drive fluid flow along the second drain line in the direction C2 shown in figure 6 when reversing direction.

With respect to the sixth valve body 22, the sixth valve body 22 can be selected from, but not limited to, two-position three-way electromagnetic directional valves, which enable the third pump body 21 to communicate with the fifth filtering device 23 as shown in fig. 4 or 6, and enable the third pump body 21 to communicate with the sixth filtering device 26 as shown in fig. 5.

With respect to the fifth filter device 23, the fifth filter device 23 can be, but is not limited to, a filter capable of filtering solid particles in a liquid. A fifth filter device 23 is provided in the third reservoir 24.

With respect to the third reservoir 24, the third reservoir 24 may be, but is not limited to, an oil drum that can be used to contain old oil drawn from the transmission.

Regarding the second fuel injection line, a fourth liquid storage device 25, a sixth filter device 26, a sixth valve body 22, a third pump body 21, a fourth intersection 20, a fourth filter device 19, and a second joint 18 are provided in this order on the second fuel injection line. The third pump body 21 is able to drive the liquid in the direction B2 shown in fig. 5, when the sixth valve body 22 puts the third pump body 21 in communication with the sixth filtering device 26 and the seventh valve body 27 is closed.

With respect to the fourth reservoir 25, the fourth reservoir 25 may be, but is not limited to, an oil drum that can be used to contain fresh oil to be injected into the transmission.

With respect to the sixth filter device 26, the sixth filter device 26 may be, but is not limited to, a filter capable of filtering solid particles from a liquid. A sixth filter means 26 is provided in the fourth reservoir means 25.

In a possible embodiment of the present invention, the transmission oil change device further includes a fourteenth valve body 45 and a second oil discharge pipeline, the fourteenth valve body 45 is disposed between the second joint 18 and the third pump body 21, the second oil discharge pipeline is provided with a seventh valve body 27, the third pump body 21 and the sixth valve body 22 are disposed on the second oil discharge pipeline, and the third pump body 21 can drive liquid to sequentially pass through the sixth valve body 22 and the seventh valve body 27. The fourteenth valve body 45 can block the passage between the second joint 18 and the third pump body 21, and can prevent the oil from leaking through the second joint 18; the seventh valve body 27 can control the on/off of the second oil discharge line, and when the seventh valve body 27 is opened, the third pump body 21 can drive the liquid from the third liquid storage device 24 to sequentially pass through the sixth valve body 22, the third pump body 21 and the seventh valve body 27, so that the old oil in the third liquid storage device 24 can be discharged.

Regarding the second oil discharge line, a third liquid storage device 24, a fifth filter device 23, a sixth valve body 22, a third pump body 21, a fourth intersection 20, and a seventh valve body 27 are provided in this order on the second oil discharge line. The third pump body 21 is capable of driving fluid in the direction of C2 shown in fig. 6 to expel fluid from the third reservoir 24 and out of the transmission changing equipment with the second connector 18 in a closed position to prevent old fluid in the third reservoir 24 from entering the transmission.

As for the seventh valve body 27, the seventh valve body 27 may be selected, but not limited to, a diaphragm valve. The seventh valve body 27 can be opened and the second oil drain line can be drained of used oil to the outside. The seventh valve body 27 communicates with the fourth intersection point 20.

Regarding the fourteenth valve body 45, the fourteenth valve body 45 may be selected from, but not limited to, solenoid valves. A fourteenth valve body 45 is arranged between the fourth filter device 19 and the fourth point of intersection 20.

Example 3:

as shown in fig. 7 to 9, the transmission oil change apparatus includes:

a third joint 28, the third joint 28 being connectable to a gearbox;

a third oil return pipeline, wherein a fourth pump body 34, an eighth valve body 32 and a ninth valve body 36 are arranged on the third oil return pipeline, the fourth pump body 34 is arranged between the eighth valve body 32 and the ninth valve body 36, and the fourth pump body 34 can pump liquid out of the transmission and enable the liquid to pass through the third joint 28, the eighth valve body 32 and the ninth valve body 36;

and a third oil injection pipeline, wherein a tenth valve body 40 and an eleventh valve body 41 are arranged on the third oil injection pipeline, the fourth pump body 34 is arranged between the tenth valve body 40 and the eleventh valve body 41, and the fourth pump body 34 can drive liquid to flow through the tenth valve body 40 and the eleventh valve body 41 and flow into the gearbox through the third joint 28.

The gearbox oil change equipment at least has the following beneficial effects:

the eighth valve body 32 and the ninth valve body 36 are opened simultaneously, and the tenth valve body 40 and the eleventh valve body 41 are closed simultaneously, so that the oil pumping function of the third oil return pipeline can be realized; the tenth valve body 40 and the eleventh valve body 41 are opened simultaneously, and the eighth valve body 32 and the ninth valve body 36 are closed simultaneously, so that the oil injection function of the third oil injection pipeline can be realized; oil return and oil injection can be realized through switching of the opening and closing states of the eighth valve body 32, the ninth valve body 36, the tenth valve body 40 and the eleventh valve body 41, and the overall structure of the oil change equipment of the gearbox is favorably simplified.

Regarding the third oil return line, a third joint 28, a fifth intersection 29, a second cleanliness detection device 30, a seventh filter device 31, an eighth valve body 32, a sixth intersection 33, a fourth pump body 34, a seventh intersection 35, a ninth valve body 36, and a fifth reservoir 37 are provided in this order on the third oil return line. The fourth pump body 34 is able to drive the fluid in the direction a3 shown in fig. 7, with the eleventh valve body 41, the tenth valve body 40 and the twelfth valve body 43 closed and the eighth valve body 32 and the ninth valve body 36 open, enabling the fluid to be drawn from the transmission into the fifth reservoir 37.

With respect to the third connector 28, the third connector 28 can be connected to the transmission through a fluid level sight port.

Regarding the fifth intersection 29, the junction of the fifth intersection 29 may be, but is not limited to, a tee joint. The fifth intersection 29 is provided between the third joint 28, the second cleanliness detection device 30, and the eleventh valve element 41.

With respect to the second cleanliness detecting device 30, the second cleanliness detecting device 30 may be, but is not limited to, a cleanliness detecting apparatus capable of detecting solid particles in a liquid.

As for the seventh filtering means 31, the seventh filtering means 31 may be selected, but not limited to, a filter. The seventh filter device 31 is capable of filtering solid particles in the first oil return line.

Regarding the eighth valve body 32, the eighth valve body 32 can be selected from, but not limited to, solenoid valves, and can be controlled by an electric circuit.

Regarding the sixth intersection 33, the connection point of the sixth intersection 33 may be, but is not limited to, a tee joint. The sixth intersection 33 is provided between the eighth valve body 32, the fourth pump body 34, and the tenth valve body 40.

With respect to the fourth pump body 34, the fourth pump body 34 may be, but is not limited to, a liquid pump. The fourth pump body 34 is provided between the sixth intersection point 33 and the seventh intersection point 35.

Regarding the seventh intersection point 35, the connection point of the seventh intersection point 35 may be, but is not limited to, a tee joint. The seventh intersection 35 is provided between the eleventh valve element 41, the fourth pump body 34, the ninth valve element 36, and the twelfth valve element 43.

Regarding the ninth valve body 36, the ninth valve body 36 can be selected from, but not limited to, solenoid valves, and can be electrically controlled.

With respect to the fifth fluid reservoir 37, the fifth fluid reservoir 37 may be selected from, but not limited to, oil drums that can be used to house old oil drawn from the transmission.

Regarding the third fuel injection line, a sixth reservoir 38, an eighth filter 39, a tenth valve body 40, a sixth intersection 33, a fourth pump body 34, a seventh intersection 35, an eleventh valve body 41, a fifth intersection 29, and a third joint 28 are provided in this order on the third fuel injection line. The fourth pump body 34 can drive the liquid to flow in the direction B3 of fig. 8, when the tenth valve body 40 and the eleventh valve body 41 are opened, and the eighth valve body 32, the ninth valve body 36 and the twelfth valve body 43 are closed.

With respect to the sixth reservoir 38, the sixth reservoir 38 may be, but is not limited to, an oil drum that can be used to contain new oil to be injected into the transmission.

With respect to the eighth filtering device 39, the eighth filtering device 39 can be selected from, but not limited to, a filter capable of filtering solid particles.

With respect to the tenth valve body 40, the tenth valve body 40 may be selected from, but not limited to, a two-position, three-way electromagnetic directional valve. The liquid passage in the tenth valve body 40 is two or more. The tenth valve body 40 enables the reversal of the liquid passage, so that the sixth intersection point 33 communicates with the eighth filter device 39 or the ninth filter device 42.

Regarding the eleventh valve body 41, the eleventh valve body 41 can be selected from, but not limited to, electromagnetic valves, and can realize circuit control.

In a possible embodiment of the present invention, the gearbox oil change device further comprises a third oil discharge pipeline, a twelfth valve body 43 is arranged on the third oil discharge pipeline, the tenth valve body 40 and the fourth pump body 34 are also arranged on the third oil discharge pipeline, the fourth pump body 34 is arranged between the tenth valve body 40 and the twelfth valve body 43, and the fourth pump body 34 can drive liquid to flow through the tenth valve body 40 and the twelfth valve body 43. When the tenth valve body 40 and the twelfth valve body 43 are in the open state and the eighth valve body 32, the ninth valve body 36 and the eleventh valve body 41 are closed, the fourth pump body 34 can drive the liquid to flow along the third oil discharge pipeline, so that the liquid in the fifth liquid storage device 37 can be discharged out of the transmission oil change equipment.

In the third drain line, a fifth reservoir 37, a ninth filter 42, a tenth valve body 40, a sixth intersection 33, a fourth pump body 34, a seventh intersection 35, and a twelfth valve body 43 are provided in this order on the third drain line. The fourth pump body 34 is capable of driving fluid in the direction of C3 shown in fig. 9, thereby discharging fluid from the fifth fluid reservoir 37 to the exterior of the transmission oil change device, with the tenth valve body 40 and the twelfth valve body 43 open, and the eighth valve body 32, the ninth valve body 36, and the eleventh valve body 41 closed.

With respect to the ninth filter device 42, the ninth filter device 42 can be selected from, but not limited to, filters capable of filtering solid particulates.

With respect to the twelfth valve body 43, the twelfth valve body 43 can be, but is not limited to, a diaphragm valve, and can open or close the third oil drain line.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. The gearbox oil change method is characterized by comprising the following steps:

firstly, pumping oil from a gearbox through a joint and an oil return pipeline;

2. The transmission oil change method according to claim 1, characterized in that: and injecting oil into the gearbox through the joint and the oil injection pipeline, and then executing the step I, the step II and the step III.

3. A gearbox oil change method according to claim 1 or 2, characterised in that: and after the step one is finished, the oil quantity in the gearbox is more than or equal to 45% of the normal oil quantity and less than or equal to 100% of the normal oil quantity, and after the step three is finished, the oil quantity in the gearbox is in the range of the normal oil quantity.

4. Gearbox equipment of changing oil, its characterized in that includes:

a first coupling connectable to a gearbox;

the first oil injection pipeline is provided with a third valve body and a second pump body, the second pump body can drive liquid to pass through the third valve body and the first joint, the first oil return pipeline and a first intersection point is arranged between the first oil injection pipeline, and the first intersection point is arranged between the first joint and the first valve body and between the third valve body.

5. The transmission oil change apparatus according to claim 4, characterized in that: gearbox equipment of changing oil still includes first oil extraction way, first oil extraction way with be equipped with the second nodical between the first return oil way, the second nodical is established first valve body with between the first pump body, first pump body can drive liquid is in when first valve body closes flow in the first oil extraction way.

6. The transmission oil change apparatus according to claim 5, characterized in that: the gearbox oil change equipment further comprises a thirteenth valve body and a second liquid storage device, one end of the second pump body is communicated with the second liquid storage device, one end of the thirteenth valve body is communicated with the second liquid storage device, and one end of the thirteenth valve body is communicated with the second intersection point.

7. Gearbox equipment of changing oil, its characterized in that includes:

a second sub connectable to a gearbox;

the second oil return pipeline is provided with a third pump body and a sixth valve body, the third pump body can realize positive rotation and reverse rotation, the sixth valve body is a reversing valve, the number of liquid channels in the sixth valve body is more than or equal to two, and the third pump body can drive liquid to be pumped out from the gearbox through the second joint;

and the third pump body and the sixth valve body are arranged on the second oil injection pipeline, the third pump body can drive liquid to be injected into the gearbox through the second joint, and the sixth valve body can enable the third pump body to be switched between the second oil return pipeline and the second oil injection pipeline through switching a liquid channel.

8. The transmission oil change apparatus according to claim 7, characterized in that: the gearbox oil change equipment further comprises a fourteenth valve body and a second oil discharge pipeline, the fourteenth valve body is arranged between the second connector and the third pump body, a seventh valve body is arranged on the second oil discharge pipeline, the third pump body and the sixth valve body are arranged on the second oil discharge pipeline, and the third pump body can drive liquid to sequentially pass through the sixth valve body and the seventh valve body.

9. Gearbox equipment of changing oil, its characterized in that includes:

a third joint connectable to a gearbox;

the third oil return pipeline is provided with a fourth pump body, an eighth valve body and a ninth valve body, the fourth pump body is arranged between the eighth valve body and the ninth valve body, and the fourth pump body can pump liquid out of the gearbox and enable the liquid to pass through the third joint, the eighth valve body and the ninth valve body;

10. The transmission oil change apparatus according to claim 9, characterized in that: the gearbox oil change equipment further comprises a third oil discharge pipeline, a twelfth valve body is arranged on the third oil discharge pipeline, the tenth valve body and the fourth pump body are also arranged on the third oil discharge pipeline, the fourth pump body is arranged between the tenth valve body and the twelfth valve body, and the fourth pump body can drive liquid to flow through the tenth valve body and the twelfth valve body.