A pressure-maintaining compensation control system for a transmission device

Abstract

The present invention relates to the technical field of engineering machinery, and discloses a pressure-maintaining compensation control system for a transmission device, including an air compressor and a pressure-maintaining oil tank, wherein the air compressor is connected to the pressure-maintaining oil tank through an air pipe, and the pressure-maintaining oil tank is connected to the transmission device through a first oil pipe; the transmission device is provided with a first oil inlet channel that can pass into the interior of a traditional device, one end of the first oil pipe is connected to the pressure-maintaining oil tank, and the other end is connected to the first oil inlet channel; the pressure-maintaining oil tank is provided with an oil level indicator for observing the amount of oil leakage inside the transmission device; a ball valve and a one-way valve are also sequentially provided between the air compressor and the air pipe, and the arrangement of the ball valve and the one-way valve is used to control the amount and direction of air source feed in the pressure-maintaining oil tank. The beneficial effects of the present invention are: the active pressure-maintaining method is adopted to adjust the internal pressure of the transmission device in real time, and external mud is prevented from damaging the internal transmission device structure.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a pressure-maintaining compensation control system for a transmission device, and in particular to a multiple pressure-maintaining compensation control system for a deep foundation construction transmission device. Background Art

[0002] As the depth of underground space development becomes deeper and deeper, the construction conditions of construction equipment in deep engineering projects become more and more complicated. The hardness of the stratum and the complexity of the mud have aggravated the damage to the construction equipment, especially the transmission structure such as the reducer. The pressure maintenance system, that is, the pressure compensation system, is widely used to balance the internal pressure and external mud pressure of the transmission device of the construction equipment during deep construction. The use of pressure compensation technology can achieve that the internal pressure of the transmission device is slightly greater than the external mud pressure, preventing the external mud from entering the transmission device.

[0003] At present, the pressure compensation system often adopts passive pressure maintenance, that is, the pressure is maintained by the preset pressure of the bladder. On deep-water operating equipment, the sealing device may be damaged suddenly due to external construction impact, high-pressure mud and other reasons. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pressure-maintaining compensation control system for a transmission device, which adopts an active pressure-maintaining method and can adjust the internal pressure of the transmission device in real time, thereby preventing external mud from damaging the internal transmission device structure.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pressure-maintaining compensation control system for a transmission device comprises an air compressor and a pressure-maintaining oil tank, wherein the air compressor is connected to the pressure-maintaining oil tank via an air supply pipe, and the pressure-maintaining oil tank is connected to the transmission device via a first oil pipe; the transmission device is provided with a first oil inlet passage which can lead to the interior of a traditional device, one end of the first oil pipe is connected to the pressure-maintaining oil tank, and the other end is connected to the first oil inlet passage; the pressure-maintaining oil tank is provided with an oil level indicator for observing the amount of oil leakage inside the transmission device; a ball valve and a one-way valve are also sequentially provided between the air compressor and the air supply pipe, and the arrangement of the ball valve and the one-way valve is used to control the amount and direction of air source feed in the pressure-maintaining oil tank.

[0007] Furthermore, it also includes a display arranged in the operating room of the operating equipment, which is respectively connected to the air compressor and the oil level indicator, and is respectively used to display the air supply pressure of the air compressor and the internal oil pressure of the transmission device. When the internal oil pressure of the transmission device is lower than the set value, the air compressor is adjusted to increase the pressure.

[0008] Furthermore, the first oil inlet passage is a gear oil inlet passage.

[0009] Furthermore, the first oil pipe is arranged to pass through a power assembly before being connected to the first oil inlet channel, and the power assembly is used to provide driving force for the transmission device and to control the start, stop and operation of the transmission device.

[0010] Furthermore, the power assembly includes a power source, a motor, a transmission shaft, a sensor, a controller and a protective box for its internal components. The controller is connected to the motor and is used to control the start, stop and operation of the transmission device. The connection relationship between the components in the power assembly is the existing technology.

[0011] Furthermore, the pressure-maintaining oil tank includes at least one oil tank chamber, at least one first oil pipe, and at least one transmission device; the number of the oil tank chambers, the first oil pipes and the transmission devices is the same, and the oil tank chambers and the transmission devices are connected one by one through a first oil pipe.

[0012] Furthermore, the pressure-maintaining oil tank has two oil tank chambers, namely a left oil tank chamber and a right oil tank chamber, there are two first oil pipes, and there are two transmission devices, namely a left transmission device and a right transmission device; the left oil tank chamber is connected to the left transmission device through a first oil pipe, and the left oil tank chamber supplies oil to the left transmission device, and the right oil tank chamber is connected to the right transmission device through a first oil pipe, and the right oil tank chamber supplies oil to the right transmission device.

[0013] Furthermore, the left fuel tank chamber and the right fuel tank chamber are symmetrically arranged.

[0014] Furthermore, it also includes a refueling pump, which is connected to the transmission device through a second oil pipe, and the transmission device also includes a second oil inlet channel and an oil storage chamber; the second oil inlet channel is arranged inside the transmission device, and the oil storage chamber is sealed and arranged outside the transmission device for storing grease from the refueling pump; one end of the second oil pipe is connected to the refueling pump, and the other end is connected to the upper end of the second oil inlet channel, and the lower end of the second oil inlet channel is connected to the oil storage chamber. The refueling pump maintains long-term pre-pressure oil injection into the transmission device, forcing the mud outside the transmission device to be expelled outward to prevent the external mud from corroding the transmission device.

[0015] Furthermore, the oil storage chamber seals the outside of the transmission device and is arranged on the inside of the working component. The working component is a working execution component of the operating equipment, and the working component is connected to the transmission device.

[0016] Furthermore, the second oil pipe is arranged to pass through the power component before being connected to the second oil inlet channel.

[0017] Furthermore, there is at least one refueling pump, at least one second oil pipe, and at least one transmission device. The number of the refueling pump, the second oil pipe, and the transmission device are the same, and the refueling pump and the transmission device are connected one by one through a second oil pipe.

[0018] Furthermore, there are two refueling pumps and two transmission devices, namely a left transmission device and a right transmission device, and the two refueling pumps supply grease to the oil storage chambers of the left transmission device and the right transmission device respectively.

[0019] Furthermore, a control switch for the refueling pump is provided in the operating room of the operating equipment, and the operator can control the start and stop of the refueling pump.

[0020] Furthermore, the second oil inlet channel is a butter inlet channel; and the second oil pipe is a grease pipe.

[0021] Furthermore, a floating sealing ring is also provided on the transmission device, and the floating sealing ring is used for rotational sealing during the connection process between the working component (such as the milling wheel) and the transmission device (such as the reducer).

[0022] Furthermore, pressure sensors are provided inside and outside the transmission device. The internal pressure sensor is used to collect the pressure inside the transmission device and transmit the collected pressure data inside the transmission device to the display; the external pressure sensor is used to collect the mud pressure in the external environment and transmit the collected mud pressure data in the external environment to the display.

[0023] Furthermore, the working component is an executive component of engineering machinery operating equipment such as a milling wheel, downhole power such as a screw drill, a turbine drill, etc.

[0024] Furthermore, the transmission device is a reducer, a screw motor, a turbine motor, etc.

[0025] Furthermore, the milling wheel is arranged outside the reducer. When the milling wheel and the reducer rotate relative to each other, mud will enter the gap between the milling wheel and the reducer, and then the inside of the reducer will be at risk of being corroded by the mud.

[0026] Before deep foundation construction, a certain amount of gear oil is stored in the pressure-maintaining oil tank. A gear oil depth sensor is installed in the tank to detect the amount of oil. The oil level indicator is used to display the leakage of gear oil inside the transmission device. The pressure-maintaining oil tank is always connected to the transmission device through the first oil pipe to ensure that the transmission device is filled with gear oil. The refueling pump delivers grease to the oil storage chamber outside the transmission device through the second oil pipe (the oil storage chamber is a grease storage chamber) to expel mud in the external environment, thereby protecting the seal of the transmission device from erosion.

[0027] During construction, according to the construction depth, the air compressor supplies air to the pressure-maintaining tank and always maintains a certain pressure. The pressure value depends on the construction depth and the mud pressure display value in the external environment. The operator can monitor the oil level of the oil level indicator in the pressure-maintaining tank through the display to monitor the transmission gear oil leakage. On the other hand, the refueling pump maintains long-term pre-pressure (low-pressure) oiling to force the mud on the outside of the transmission to be expelled to the outside, preventing the mud in the external environment from corroding the seal of the transmission. By replenishing oil through the above method, the pressure difference between the inside and outside of the transmission seal is always maintained to prevent slurry from entering the transmission. The present invention provides a multiple pressure-maintaining compensation control system and control method for a deep foundation construction transmission device, which prevents external mud from damaging the internal transmission device structure.

[0028] Compared with the prior art, the present invention provides a multiple pressure-maintaining compensation control system for a transmission device, which has the following beneficial effects:

[0029] (1) The pressure-maintaining compensation control system of the present invention adopts active pressure maintenance, which can adjust the internal pressure of the transmission device in real time, always maintain the pressure difference between the inside and outside of the transmission device seal to prevent slurry from entering the transmission device, and avoid external mud from damaging the internal transmission device structure.

[0030] (2) The pressure-maintaining compensation control system of the present invention pre-compresses lubricating oil on the outer side of the transmission seal to forcefully expel external mud, which can effectively resist the intrusion pressure of external mud.

[0031] (3) The pressure-maintaining compensation control system of the present invention can protect the seal from external erosion by maintaining pressure inside and outside the transmission seal, replenishing oil and discharging propellers, etc., and can monitor the internal and external pressures of the floating seal of the transmission device of deep construction equipment in real time through pressure sensors arranged inside and outside the transmission device.

[0032] (4) The pressure-maintaining compensation control system of the present invention can determine whether the transmission device is damaged or leaking oil by observing the data sent back by the oil level indicator, and effectively monitor the transmission device and the related internal cavity pressure in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a control system in an embodiment of the present invention;

[0034] Figure 2 It is a cross-sectional structural schematic diagram of the transmission device part in an embodiment of the present invention;

[0035] Figure 3 Schematic diagram of the internal pressure-maintaining oil circuit of the transmission device in an embodiment of the present invention.

[0036] The meanings of the reference numerals in the figures are:

[0037] 1-air compressor, 2-pressure-maintaining oil tank, 3-fuel pump, 4-power assembly, 5-left transmission device, 6-right transmission device, 7-air pipe, 8-first oil pipe, 9-second oil pipe, 10-ball valve, 11-check valve, 12-oil level indicator, 13-display, 14-transmission device, 141-first oil inlet channel, 142-second oil inlet channel, 143-oil storage chamber, 144-floating sealing ring, 15-working assembly, 16-left working assembly, 17-right working assembly. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may also include different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

[0041] Example 1

[0042] like Figures 1 to 3As shown, the pressure-maintaining compensation control system of the present invention comprises an air compressor 1 and a pressure-maintaining oil tank 2. The air compressor 1 is connected to the pressure-maintaining oil tank 2 via an air pipe 7, and the pressure-maintaining oil tank 2 is connected to a transmission device 14 via a first oil pipe 8. The transmission device 14 is provided with a first oil inlet channel 141 which can pass into the interior of the traditional device 14. One end of the first oil pipe 8 is connected to the pressure-maintaining oil tank 2, and the other end is connected to the first oil inlet channel 141. The pressure-maintaining oil tank 2 is provided with an oil level indicator 12 for observing the amount of oil leakage inside the transmission device 14. A ball valve 10 and a one-way valve 11 are also sequentially provided between the air compressor 1 and the air pipe 7. The setting of the ball valve 10 and the one-way valve 11 is used to control the amount and direction of air source feed in the pressure-maintaining oil tank 2.

[0043] In a specific implementation of this embodiment, it also includes a display 13 arranged in the operating room of the operating equipment. The display 13 is connected to the air compressor 1 and the oil level indicator 12, respectively, and is used to display the air supply pressure of the air compressor 1 and the internal oil pressure of the transmission device 14, respectively. When the internal oil pressure of the transmission device 14 is lower than the set value, the air compressor 1 is adjusted to increase the pressure.

[0044] In a specific implementation of this embodiment, the first oil inlet passage 141 is a gear oil inlet passage.

[0045] In a specific implementation of this embodiment, the first oil pipe 8 is arranged to pass through the power component 4 before being connected to the first oil inlet channel 141. The power component 4 is used to provide driving force for the transmission device 14 and to control the start, stop and operation of the transmission device 14.

[0046] In a specific implementation of this embodiment, the power assembly 4 includes a power source, a motor, a transmission shaft, a sensor, a controller and a protective box for its internal components. The controller is connected to the motor and is used to control the start and stop and operation of the transmission device 14. The connection relationship between the components in the power assembly 4 is the existing technology.

[0047] In a specific implementation of the present embodiment, the pressure-maintaining oil tank 2 includes at least one oil tank chamber, at least one first oil pipe 8, and at least one transmission device 14; the number of oil tank chambers, first oil pipes 8 and transmission devices 14 is the same, and the oil tank chambers and the transmission devices 14 are connected one by one through a first oil pipe 8.

[0048] In a specific implementation of the present embodiment, the pressure-maintaining oil tank 2 has two oil tank chambers, namely a left oil tank chamber and a right oil tank chamber, there are two first oil pipes 8, and there are two transmission devices 14, namely a left transmission device 5 and a right transmission device 6; the left oil tank chamber is connected to the left transmission device 5 through a first oil pipe 8, and the left oil tank chamber supplies oil to the left transmission device 5, and the right oil tank chamber is connected to the right transmission device 6 through a first oil pipe 8, and the right oil tank chamber supplies oil to the right transmission device 6.

[0049] In a specific implementation of this embodiment, the left fuel tank chamber and the right fuel tank chamber are symmetrically arranged.

[0050] Example 2

[0051] The difference between Example 2 and Example 1 is that by adding a refueling pump 3, a second oil pipe 9, a second oil inlet channel 142, and an oil storage chamber 143, lubricating oil is pre-pressurized on the sealed outer side of the transmission device 14 to force out external mud, which can effectively resist the intrusion pressure of external mud.

[0052] like Figures 1 to 3 As shown, the pressure-maintaining compensation control system of the present invention also includes a refueling pump 3, which is connected to the transmission device 14 through a second oil pipe 9. The transmission device 14 also includes a second oil inlet channel 142 and an oil storage chamber 143. The second oil inlet channel 142 is arranged inside the transmission device 14, and the oil storage chamber 143 is sealed and arranged outside the transmission device 14 for storing grease from the refueling pump 3. One end of the second oil pipe 9 is connected to the refueling pump 3, and the other end is connected to the upper end of the second oil inlet channel 142, and the lower end of the second oil inlet channel 142 is connected to the oil storage chamber 143. The refueling pump 3 maintains long-term pre-pressure oil injection into the transmission device 14, and forces the mud outside the transmission device 14 to be expelled outward to prevent the external mud from corroding the transmission device 14.

[0053] In a specific implementation of this embodiment, the oil storage chamber 143 is sealed on the outside of the transmission device 14 and is arranged on the inside of the working component 15. The working component 15 is a working execution component of the operating equipment, and the working component 15 is connected to the transmission device 14.

[0054] In a specific implementation of this embodiment, the second oil pipe 9 is arranged to pass through the power assembly 4 before being connected to the second oil inlet channel 142 .

[0055] In a specific implementation of this embodiment, there is at least one refueling pump 3, at least one second oil pipe 9, and at least one transmission device 14. The number of refueling pumps 3, second oil pipes 9 and transmission devices 14 is the same, and the refueling pumps 3 and the transmission devices 14 are connected one by one through a second oil pipe 9.

[0056] In a specific implementation of this embodiment, there are two refueling pumps 2 and two transmission devices 14, namely the left transmission device 5 and the right transmission device 6. The two refueling pumps 2 supply grease to the oil storage chambers 143 of the left transmission device 5 and the right transmission device 6 respectively.

[0057] In a specific implementation of this embodiment, a control switch of the refueling pump 3 is provided in the operating room of the operating equipment, and the operator can control the start and stop of the refueling pump 3 .

[0058] In a specific implementation of this embodiment, the second oil inlet channel 142 is a butter inlet channel; the second oil pipe 9 is a grease pipe.

[0059] In a specific implementation of this embodiment, pressure sensors are provided inside and outside the transmission device 14. The internal pressure sensor is used to collect the pressure inside the transmission device 114, and transmit the collected pressure data inside the transmission device 14 to the display 13; the external pressure sensor is used to collect the mud pressure in the external environment, and transmit the collected mud pressure data in the external environment to the display 13.

[0060] Example 3

[0061] The difference between Example 3 and Example 2 is that a floating seal ring 144 is provided on the transmission device 14.

[0062] like Figure 2 As shown, the pressure-maintaining compensation control system of the present invention is further provided with a floating seal ring 144 on the transmission device 14, and the floating seal ring 144 is used for rotational sealing during the connection process between the working component 15 (such as a milling wheel) and the transmission device 14 (such as a reducer).

[0063] In a specific implementation of this embodiment, the working component 15 is an executive component of a milling wheel, downhole power such as a screw drill, a turbine drill, or other engineering machinery operation equipment, such as Figure 3 As shown, there are two working components 15, namely a left working component 16 and a right working component 17.

[0064] In a specific implementation of this embodiment, the transmission device is a reducer, a screw motor, a turbine motor, etc. Figure 1 and Figure 3 As shown, there are two transmission devices, namely a left transmission device 5 and a right transmission device 6, on which a left working component 16 and a right working component 17 are respectively arranged.

[0065] The present invention Figure 1 to Figure 2 The working component is a milling wheel, and the transmission device is a reducer as a representative diagram. The milling wheel is arranged outside the reducer. When the milling wheel and the reducer rotate relative to each other, the mud will enter the gap between the milling wheel and the reducer, and then the inside of the reducer will be at risk of being corroded by the mud.

[0066] Before deep foundation construction, a certain amount of gear oil is stored in the pressure-maintaining oil tank 2. A gear oil depth sensor is installed in the tank to detect the amount of oil. The oil level indicator 12 is used to display the leakage of the gear oil inside the transmission device 14. The pressure-maintaining oil tank 2 is always connected to the transmission device 14 through the first oil pipe 8 to ensure that the transmission device 14 is filled with gear oil. The refueling pump 3 delivers grease to the oil storage chamber 143 (the oil storage chamber 143 is a grease storage chamber) outside the transmission device 14 through the second oil pipe 9 to expel mud in the external environment, thereby protecting the seal of the transmission device 14 from erosion.

[0067] During construction, according to the construction depth, the air compressor 1 supplies air to the pressure-maintaining tank 2 and always maintains a certain pressure. The pressure value depends on the construction depth and the mud pressure display value in the external environment. The operator can monitor the oil level of the oil level indicator 12 in the pressure-maintaining tank 2 through the display 13 to monitor the gear oil leakage of the transmission device 14. On the other hand, the refueling pump 3 maintains long-term pre-pressure (low-pressure) oiling to force the mud on the outside of the transmission device 14 to be expelled outward to prevent the mud in the external environment from eroding the seal of the transmission device 14. By replenishing oil through the above method, the pressure difference between the inside and outside of the transmission device seal is always maintained to prevent the transmission device 14 from entering the slurry. The present invention provides a multiple pressure-maintaining compensation control system and control method for a deep foundation construction transmission device, which prevents external mud from damaging the internal transmission device structure.

[0068] It should be noted that, in this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-maintaining compensation control system for a transmission device, characterized in that: It includes an air compressor and a pressure-maintaining oil tank, the air compressor is connected to the pressure-maintaining oil tank through an air pipe, and the pressure-maintaining oil tank is connected to a transmission device through a first oil pipe; the transmission device is provided with a first oil inlet channel that can pass into the interior of the traditional device, one end of the first oil pipe is connected to the pressure-maintaining oil tank, and the other end is connected to the first oil inlet channel; the pressure-maintaining oil tank is provided with an oil level indicator for observing the amount of oil leakage inside the transmission device; a ball valve and a one-way valve are also provided in sequence between the air compressor and the air pipe; it also includes a refueling pump, which is connected to the transmission device through a second oil pipe, and the transmission device also includes a second oil inlet channel and an oil storage chamber; the second oil inlet channel is arranged inside the transmission device, and the oil storage chamber is sealed and arranged on the outside of the transmission device , used to store grease from the refueling pump; one end of the second oil pipe is connected to the refueling pump, and the other end is connected to the upper end of the second oil inlet channel, and the lower end of the second oil inlet channel is connected to the oil storage chamber; it also includes a display arranged in the operating room of the operating equipment, and the display is respectively connected to the air compressor and the oil level indicator, and is respectively used to display the air supply pressure of the air compressor and the oil pressure inside the transmission device; pressure sensors are arranged inside and outside the transmission device, and the internal pressure sensor is used to collect the pressure inside the transmission device and transmit the collected pressure data inside the transmission device to the display; the external pressure sensor is used to collect the mud pressure in the external environment, and transmit the collected mud pressure data in the external environment to the display; The first oil pipe is arranged to pass through a power assembly before being connected to the first oil inlet passage, and the power assembly is used to provide driving force for the transmission device and to control the start, stop and operation of the transmission device; There is at least one refueling pump, at least one second oil pipe, and at least one transmission device. The number of the refueling pump, the second oil pipe, and the transmission device are the same, and the refueling pump and the transmission device are connected one by one through a second oil pipe.

2. The pressure-maintaining compensation control system of a transmission device according to claim 1, characterized in that: The first oil inlet passage is a gear oil inlet passage.

3. The pressure-maintaining compensation control system of a transmission device according to claim 1, characterized in that: The pressure-maintaining oil tank includes at least one oil tank chamber, at least one first oil pipe, and at least one transmission device; the number of the oil tank chambers, the first oil pipes, and the transmission devices is the same, and the oil tank chambers and the transmission devices are connected one by one through a first oil pipe.

4. The pressure-maintaining compensation control system of a transmission device according to claim 3, characterized in that: The pressure-maintaining oil tank has two oil tank chambers, namely a left oil tank chamber and a right oil tank chamber, there are two first oil pipes, and there are two transmission devices, namely a left transmission device and a right transmission device; the left oil tank chamber is connected to the left transmission device through a first oil pipe, and the left oil tank chamber supplies oil to the left transmission device, and the right oil tank chamber is connected to the right transmission device through a first oil pipe, and the right oil tank chamber supplies oil to the right transmission device.

5. The pressure-maintaining compensation control system of a transmission device according to claim 1, characterized in that: The second oil inlet passage is a butter inlet passage; and the second oil pipe is a grease pipe.

6. The pressure-maintaining compensation control system of a transmission device according to claim 1, characterized in that: A floating seal ring is also provided on the transmission device, and the floating seal ring is used for rotational sealing during the connection process between the working component and the transmission device.

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