Underwater electric flushing tool

Abstract

According to the underwater electric flushing tool, a direct-current brush motor and a voltage-reduction speed-regulation module are reliably packaged in a sealed shell, so that electrical components in the direct-current brush motor and the voltage-reduction speed-regulation module are completely isolated from an external deepwater operation environment, the working stability of the underwater electric flushing tool is ensured, and the performance is more reliable; the sealing shell of the flushing tool is connected with the outside only through the oil-filled water-tight cable, and the oil-filled water-tight cable can supply power to the direct-current brush motor and the step-down speed regulation module on one hand and can dynamically fill pressure compensation oil into the sealing shell on the other hand. Pressure balance of the underwater electric flushing tool at different submerging depths along with the underwater robot can be effectively guaranteed, so that the underwater electric flushing tool can better adapt to different water depth operation environments, and the underwater electric flushing tool has the advantages of being small in size, light in weight, low in power consumption and high in integration degree in structural design. The radial plunger pump, the sealing shell and the supporting seat body of the flushing tool are connected through bolts, and maintenance and debugging are more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of deep water engineering, in particular to an underwater electric flushing tool. Background Art

[0002] For small and medium-sized underwater robots with their own energy sources, when operating in deep water environments, the surface of underwater targets is often covered with a layer of sediment. In order to better observe underwater targets, it is necessary to separate the sediment from the surface of the underwater targets. The simplest way is to take advantage of the water environment and directly flush the surface of the target.

[0003] Due to the particularity of deepwater operations, the requirements for flushing tools are relatively stringent. They must have the characteristics of small size and weight, low power consumption, high integration, pressure compensation, reliable performance, and easy maintenance and debugging. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model provides an underwater electric flushing tool, which has the characteristics of small size and weight, low power consumption, high integration, pressure compensation, reliable performance, and convenient maintenance and debugging.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an underwater electric flushing tool, including a radial piston pump, a DC brush motor, a reduction transmission mechanism, a sealing shell, a support seat, a high-pressure gun head and a pressure-resistant hose; the radial piston pump and the sealing shell are fixedly mounted on the support seat in parallel; the DC brush motor is fixedly mounted inside the sealing shell, and the motor shaft of the DC brush motor is transmission-connected to the power input shaft of the radial piston pump through the reduction transmission mechanism; the high-pressure gun head is connected to the water outlet of the radial piston pump through a pressure-resistant hose.

[0006] The sealing shell includes a cylinder shell, a front end cover and a rear end cover; the front end cover is fixedly installed at the front end cylinder mouth of the cylinder shell, the front end cover and the cylinder shell are fastened by bolts, and a first static sealing ring is installed between the front end cover and the annular contact surface of the cylinder shell; the rear end cover is fixedly installed at the rear end cylinder mouth of the cylinder shell, the rear end cover and the cylinder shell are fastened by bolts, and a second static sealing ring is installed between the rear end cover and the annular contact surface of the cylinder shell.

[0007] The support seat body includes a base plate and a support vertical plate, and the support vertical plate is vertically fixed on the base plate; the front end cover of the radial piston pump and the sealing shell are fastened to the support vertical plate by bolts; the cylinder shell of the sealing shell is fastened to the base plate by bolts.

[0008] The DC brush motor is fixedly installed inside the cylindrical shell, and a transmission shaft is coaxially fixedly sleeved on the motor shaft of the DC brush motor. The transmission shaft is fastened to the motor shaft of the DC brush motor by bolts.

[0009] The reduction transmission mechanism comprises a high-speed pinion and a low-speed gear; the high-speed pinion is coaxially fixed on the transmission shaft; the low-speed gear is coaxially fixed on the power input shaft of the radial piston pump, and the low-speed gear meshes with the high-speed pinion.

[0010] The transmission shaft seal passes through the front end cover of the sealing housing, and a skeleton oil seal, a wear-resistant ring and a rotary step seal are arranged in sequence from the inside to the outside between the transmission shaft and the wall of the transmission shaft passing hole on the front end cover.

[0011] The end of the power input shaft of the radial piston pump is inserted into the supporting plate, and the end of the power input shaft of the radial piston pump is rotatably connected to the power input shaft insertion hole on the supporting plate through a deep groove ball bearing.

[0012] A step-down speed regulating module is fixedly installed at the lower part of the inner part of the cylindrical shell, and the step-down speed regulating module is electrically connected to the control end of the DC brushed motor.

[0013] The interior of the sealed housing is filled with pressure compensation oil, and an oil filling joint and a cable joint are respectively installed on the rear end cover of the sealed housing; the oil filling joint and the cable joint are fastened to the rear end cover by screwing, a third static sealing ring is installed between the annular contact surface of the cable joint and the rear end cover, and a fourth static sealing ring is installed between the annular contact surface of the oil filling joint and the rear end cover; the cable joint is connected to an oil-filled watertight cable through a clamp seal, and the oil-filled watertight cable is electrically connected to the step-down speed regulation module.

[0014] A T-shaped handle is fixedly installed at the rear end of the high-voltage gun head, and the T-shaped handle is fastened to the high-voltage gun head through a bolt.

[0015] Beneficial effects of the utility model:

[0016] In the underwater electric flushing tool of the utility model, the DC brush motor and the step-down speed regulation module can be reliably encapsulated inside the sealed shell, so that the electrical components inside the DC brush motor and the step-down speed regulation module are completely isolated from the external deep-water operating environment, thereby ensuring the working stability of the underwater electric flushing tool and making the performance more reliable; the sealed shell is only connected to the outside through an oil-filled watertight cable, which can supply power to the DC brush motor and the step-down speed regulation module on the one hand, and can also dynamically fill pressure compensation oil into the sealed shell on the other hand, thereby effectively ensuring the pressure balance of the underwater electric flushing tool at different diving depths with the underwater robot, so as to better adapt to different water depth operating environments, so that the structural design has the characteristics of small size and weight, low power consumption and high integration; the radial piston pump, the sealed shell and the support seat are all connected by bolts, which is more convenient for maintenance and debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an underwater electric flushing tool (overall) of the utility model (viewing angle 1);

[0018] Figure 2 It is a structural schematic diagram (viewing angle 2) of an underwater electric flushing tool (partial cutaway view) of the utility model;

[0019] In the figure, 1 is a radial piston pump, 2 is a DC brush motor, 3 is a sealing shell, 4 is a support seat, 5 is a high-pressure gun head, 6 is a pressure-resistant hose, 7 is a barrel, 8 is a front cover, 9 is a rear cover, 10 is a first static seal ring, 11 is a second static seal ring, 12 is a base plate, 13 is a support plate, 14 is a transmission shaft, 15 is a high-speed small gear, 16 is a low-speed large gear, 17 is a skeleton oil seal, 18 is a wear-resistant ring, 19 is a rotary step seal, 20 is a deep groove ball bearing, 21 is a step-down speed regulation module, 22 is an oil-filled joint, 23 is a cable joint, 24 is a third static seal ring, 25 is an oil-filled watertight cable, and 26 is a T-handle. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] like Figure 1 , 2 As shown, an underwater electric flushing tool includes a radial piston pump 1, a DC brush motor 2, a reduction transmission mechanism, a sealing shell 3, a support seat body 4, a high-pressure gun head 5 and a pressure-resistant hose 6; the radial piston pump 1 and the sealing shell 3 are fixedly mounted on the support seat body 4 in parallel; the DC brush motor 2 is fixedly mounted inside the sealing shell 3, and the motor shaft of the DC brush motor 2 is transmission-connected to the power input shaft of the radial piston pump 1 through the reduction transmission mechanism; the high-pressure gun head 5 is connected to the water outlet of the radial piston pump 1 through the pressure-resistant hose 6.

[0022] The sealing shell 3 includes a cylinder shell 7, a front end cover 8 and a rear end cover 9; the front end cover 8 is fixedly installed at the front end cylinder mouth of the cylinder shell 7, the front end cover 8 and the cylinder shell 7 are fastened by bolts, and a first static sealing ring 10 is installed between the front end cover 8 and the annular contact surface of the cylinder shell 7; the rear end cover 9 is fixedly installed at the rear end cylinder mouth of the cylinder shell 7, the rear end cover 9 and the cylinder shell 7 are fastened by bolts, and a second static sealing ring 11 is installed between the rear end cover 9 and the annular contact surface of the cylinder shell 7.

[0023] The support seat body 4 includes a base plate 12 and a support vertical plate 13, and the support vertical plate 13 is vertically fixed on the base plate 12; the front end cover 8 of the radial piston pump 1 and the sealing shell 3 are fastened to the support vertical plate 13 by bolts; the cylinder shell 7 of the sealing shell 3 is fastened to the base plate 12 by bolts.

[0024] The DC brush motor 2 is fixedly installed inside the cylindrical shell 7, and a transmission shaft 14 is coaxially fixedly sleeved on the motor shaft of the DC brush motor 2. The transmission shaft 14 is fastened to the motor shaft of the DC brush motor 2 by bolts.

[0025] The reduction transmission mechanism includes a high-speed pinion 15 and a low-speed gear 16 ; the high-speed pinion 15 is coaxially fixed on the transmission shaft 14 ; the low-speed gear 16 is coaxially fixed on the power input shaft of the radial piston pump 1 , and the low-speed gear 16 is meshed with the high-speed pinion 15 .

[0026] The transmission shaft 14 seals and passes through the front end cover 8 of the sealing housing 3. A skeleton oil seal 17, a wear-resistant ring 18 and a rotary step seal 19 are sequentially arranged between the transmission shaft 14 and the wall of the transmission shaft passing hole on the front end cover 8 from inside to outside.

[0027] The end of the power input shaft of the radial piston pump 1 is inserted into the support plate 13 , and the end of the power input shaft of the radial piston pump 1 is rotatably connected to the power input shaft insertion hole on the support plate 13 via a deep groove ball bearing 20 .

[0028] A step-down speed regulating module 21 is fixedly installed at the lower part of the cylindrical shell 7 , and the step-down speed regulating module 21 is electrically connected to the control end of the DC brushed motor 2 .

[0029] The sealed housing 3 is filled with pressure compensation oil, and an oil filling connector 22 and a cable connector 23 are respectively installed on the rear end cover 9 of the sealed housing 3; the oil filling connector 22 and the cable connector 23 are fastened to the rear end cover 9 by screwing, and a third static sealing ring 24 is installed between the annular contact surface of the cable connector 23 and the rear end cover 9, and a fourth static sealing ring is installed between the annular contact surface of the oil filling connector 22 and the rear end cover 9; the cable connector 23 is sealed and connected to an oil-filled watertight cable 25 through a clamp, and the oil-filled watertight cable 25 is electrically connected to the step-down speed regulation module 21.

[0030] A T-shaped handle 26 is fixedly mounted at the rear end of the high-pressure gun head 5 , and the T-shaped handle 26 is fastened to the high-pressure gun head 5 by bolts.

[0031] The working principle and working process of the utility model are described below in conjunction with the accompanying drawings:

[0032] Before the underwater electric flushing tool dives with the underwater robot, pressure compensation oil is filled into the sealed shell 3 through the oil filling joint 22, and the oil-filled watertight cable 25 is connected to the cable joint 23 at the same time. The oil-filled watertight cable 25 can supply power to the DC brushed motor 2 and the step-down speed regulation module 21 on the one hand, and can also dynamically fill pressure compensation oil into the sealed shell 3 on the other hand, to ensure the pressure balance of the underwater electric flushing tool at different diving depths with the underwater robot, so as to better adapt to different water depth working environments.

[0033] After the oil-filled watertight cable 25 is connected to the cable connector 23, the status of the DC brush motor 2 can be debugged on the water to ensure that it can work normally. After that, the underwater electric flushing tool will dive with the underwater robot until the underwater robot dives to the target depth, and the underwater robot will conduct a search operation for the underwater target.

[0034] After the underwater robot locks onto the underwater target, if the surface of the underwater target is covered with sediment, in order to better observe the underwater target, the underwater robot's mechanical arm first grabs the T-handle 26 and moves the high-voltage gun head 5 so that the water spray port of the high-voltage gun head 5 is facing the underwater target. Then the step-down speed regulation module 21 sends a start command to the DC brush motor 2. The step-down speed regulation module 21 can adapt to a wide voltage and high current continuous working state, and is used to accurately control the speed and torque of the DC brush motor 2.

[0035] When the brushed DC motor 2 is started, its motor shaft first drives the transmission shaft 14 to rotate, and the high-speed small gear 15 thereon will rotate synchronously with the transmission shaft 14, and then drive the low-speed large gear 16 meshing with it, and finally drive the power input shaft of the radial piston pump 1 to rotate through the low-speed large gear 16, while realizing the reduction transmission.

[0036] During the rotation of the power input shaft of the radial piston pump 1, negative pressure will be generated at the water suction port of the radial piston pump 1, thereby sucking the external water into the radial piston pump 1, and the water is discharged from the water outlet of the radial piston pump 1 after being pressurized by the radial piston pump 1, and then enters the high-pressure gun head 5 through the pressure-resistant hose 6, and is finally ejected from the water spray port of the high-pressure gun head 5.

[0037] Under the impact of the water flow ejected from the high-pressure gun head 5, the surface of the underwater target object is flushed, so that the sediment is separated from the surface of the underwater target object, and the underwater target object is clearly presented in the field of vision of the underwater robot.

[0038] The solutions in the embodiments are not intended to limit the patent protection scope of the present utility model. Any equivalent implementation or modification that does not deviate from the present utility model is included in the patent scope of this case.

Claims

1. An underwater electric flushing tool, characterized in that: It includes a radial piston pump, a DC brush motor, a reduction transmission mechanism, a sealing shell, a support seat, a high-pressure gun head and a pressure-resistant hose; the radial piston pump and the sealing shell are fixedly mounted on the support seat in parallel; the DC brush motor is fixedly mounted inside the sealing shell, and the motor shaft of the DC brush motor is connected to the power input shaft of the radial piston pump through the reduction transmission mechanism; the high-pressure gun head is connected to the water outlet of the radial piston pump through the pressure-resistant hose.

2. An underwater electric flushing tool according to claim 1, characterized in that: The sealing shell includes a cylinder shell, a front end cover and a rear end cover; the front end cover is fixedly installed at the front end cylinder mouth of the cylinder shell, the front end cover and the cylinder shell are fastened by bolts, and a first static sealing ring is installed between the front end cover and the annular contact surface of the cylinder shell; the rear end cover is fixedly installed at the rear end cylinder mouth of the cylinder shell, the rear end cover and the cylinder shell are fastened by bolts, and a second static sealing ring is installed between the rear end cover and the annular contact surface of the cylinder shell.

3. An underwater electric flushing tool according to claim 2, characterized in that: The support seat body includes a base plate and a support vertical plate, and the support vertical plate is vertically fixed on the base plate; the front end cover of the radial piston pump and the sealing shell are fastened to the support vertical plate by bolts; the cylinder shell of the sealing shell is fastened to the base plate by bolts.

4. The underwater electric flushing tool according to claim 2, characterized in that: The DC brush motor is fixedly installed inside the cylindrical shell, and a transmission shaft is coaxially fixedly sleeved on the motor shaft of the DC brush motor. The transmission shaft is fastened to the motor shaft of the DC brush motor by bolts.

5. An underwater electric flushing tool according to claim 4, characterized in that: The reduction transmission mechanism comprises a high-speed pinion and a low-speed gear; the high-speed pinion is coaxially fixed on the transmission shaft; the low-speed gear is coaxially fixed on the power input shaft of the radial piston pump, and the low-speed gear meshes with the high-speed pinion.

6. An underwater electric flushing tool according to claim 4, characterized in that: The transmission shaft seal passes through the front end cover of the sealing housing, and a skeleton oil seal, a wear-resistant ring and a rotary step seal are arranged in sequence from the inside to the outside between the transmission shaft and the wall of the transmission shaft passing hole on the front end cover.

7. The underwater electric flushing tool according to claim 3, characterized in that: The end of the power input shaft of the radial piston pump is inserted into the supporting plate, and the end of the power input shaft of the radial piston pump is rotatably connected to the power input shaft insertion hole on the supporting plate through a deep groove ball bearing.

8. The underwater electric flushing tool according to claim 2, characterized in that: A step-down speed regulating module is fixedly installed at the lower part of the inner part of the cylindrical shell, and the step-down speed regulating module is electrically connected to the control end of the DC brushed motor.

9. An underwater electric flushing tool according to claim 8, characterized in that: The interior of the sealed housing is filled with pressure compensation oil, and an oil filling joint and a cable joint are respectively installed on the rear end cover of the sealed housing; the oil filling joint and the cable joint are fastened to the rear end cover by screwing, a third static sealing ring is installed between the annular contact surface of the cable joint and the rear end cover, and a fourth static sealing ring is installed between the annular contact surface of the oil filling joint and the rear end cover; the cable joint is connected to an oil-filled watertight cable through a clamp seal, and the oil-filled watertight cable is electrically connected to the step-down speed regulation module.

10. The underwater electric flushing tool according to claim 1, characterized in that: A T-shaped handle is fixedly installed at the rear end of the high-voltage gun head, and the T-shaped handle is fastened to the high-voltage gun head through a bolt.

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