Hydraulic work station and inspection robot

Abstract

The application provides a hydraulic work station and an inspection robot, and belongs to the technical field of hydraulic control. The hydraulic work station comprises a hydraulic valve, a box body, an oil passing block, a pump body and a driving device. An oil passage is arranged on the inner wall of the box body. The hydraulic valve comprises a first oil passage and a second oil passage. The oil passing block is internally provided with a third oil passage and a fourth oil passage which are spaced apart. The output shaft of the pump body is connected with the output end of the driving device through the oil passing block. One end of the third oil passage and one end of the fourth oil passage are communicated through the pump body. The second oil passage is communicated with the other end of the third oil passage through the oil passage. The first oil passage is communicated with the inside of the box body through a first oil hole arranged on the box body. The other end of the fourth oil passage is communicated with the inside of the box body through a second oil hole arranged on the oil passing block. The output shaft in the pump body is driven to rotate by the driving device, so that the hydraulic oil enters the hydraulic valve through the third oil passage and the oil passage, and the conveying efficiency and stability of the hydraulic oil in the hydraulic work station are improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic control technology, and in particular to a hydraulic workstation and inspection robot. Background Technology

[0002] Existing hydraulic drive equipment for inspection robots has long power transmission paths and complex structures. In addition, most hydraulic valves in existing pipeline or mining inspection robots use electromagnetic switching or lateral plugging and unplugging for flow reversal. This method of flow reversal requires manual plugging and unplugging, which is time-consuming and labor-intensive, and results in slow hydraulic oil delivery efficiency, leading to low operating efficiency and insufficient stability of the hydraulic drive equipment. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to overcome the shortcomings of the prior art and provide a hydraulic workstation and inspection robot.

[0004] The present invention provides the following technical solution: a hydraulic workstation, comprising a hydraulic valve, a housing, an oil passage block, a pump body, and a drive device;

[0005] The inner wall of the housing is provided with an oil passage, and the hydraulic valve is located on one side of the housing. The hydraulic valve includes a first oil passage and a second oil passage.

[0006] The oil passage block is located at the open end of the housing, and the interior of the oil passage block is provided with a third oil passage and a fourth oil passage spaced apart from each other;

[0007] The pump body is located inside the housing, and the output shaft of the pump body passes through the oil passage block and is connected to the output end of the drive device;

[0008] One end of the third oil passage and one end of the fourth oil passage are respectively connected through the pump body;

[0009] The second oil passage is connected to the other end of the third oil passage through the oil passage channel, and the first oil passage is connected to the interior of the housing through the first oil hole provided on the housing;

[0010] The other end of the fourth oil passage is connected to the interior of the housing through a second oil hole provided on the oil passage block.

[0011] In some embodiments of the present invention, the oil passage block is further provided with a pressure relief oil passage, one end of which is connected to the third oil passage, and the other end of which is connected to the interior of the housing;

[0012] A pressure regulating valve is provided on one side of the pressure relief oil passage to connect or disconnect the pressure relief oil passage from the housing.

[0013] Furthermore, the pressure regulating valve is installed through the side wall of the oil passage block, and the pressure regulating valve includes a pressure regulating nut, a return spring, and an overflow valve;

[0014] The reset spring is disposed between the pressure adjusting nut and the overflow valve;

[0015] The pressure adjusting nut has a limiting groove on the side facing the overflow valve, one end of the return spring is located in the limiting groove, and the other end of the return spring abuts against the overflow valve;

[0016] The end of the overflow valve facing the pressure relief passage can extend into the pressure relief passage to seal it.

[0017] Furthermore, the preset pressure of the hydraulic workstation is P, where the value of P ranges from 0 to 8 MPa.

[0018] When the pressure of the hydraulic workstation exceeds the preset pressure, the relief valve opens.

[0019] Furthermore, the hydraulic valve includes a valve body, at least one valve core, and at least one steering gear;

[0020] The valve body is rotatably sleeved on the valve core, and the first oil passage and the second oil passage are arranged alternately inside the valve body;

[0021] The valve body has a first oil groove and a second oil groove spaced apart on one side wall. The first oil groove is connected to the first oil passage, and the second oil groove is connected to the second oil passage.

[0022] Multiple spaced-apart guide holes are provided on the other side wall of the valve body;

[0023] The output shaft of the servo motor is connected to the valve core so as to drive the valve core to rotate via the servo motor;

[0024] When the valve core rotates at a first preset angle in the first direction, the first oil passage is connected to the guide hole through the valve core;

[0025] When the valve core rotates at a second preset angle in the second direction, the second oil passage is connected to the guide hole through the valve core.

[0026] Furthermore, the first preset angle is X, and the value range of X is 42°≤X≤52°;

[0027] The second preset angle is Y, and the value range of Y is 42°≤Y≤52°.

[0028] Furthermore, the first direction is opposite to the second direction.

[0029] Furthermore, the sidewall of the valve core is provided with staggered first and second grooves;

[0030] The valve core is provided with a first guide groove and a second guide groove spaced apart in the circumferential direction;

[0031] The first oil passage is connected to the first groove through the first guide groove, and the second oil passage is connected to the second groove through the second guide groove.

[0032] Furthermore, the pump body is provided with a first connecting hole and a second connecting hole spaced apart from each other, and the first connecting hole and the second connecting hole are respectively connected to the internal cavity of the pump body;

[0033] One end of the third oil passage is connected to the first connecting hole, and one end of the fourth oil passage is connected to the second connecting hole.

[0034] Some embodiments of the present invention also provide an inspection robot, including an inspection robot body and the aforementioned hydraulic workstation.

[0035] The embodiments of the present invention have the following advantages: by connecting the second oil passage in the hydraulic valve with the oil passage in the housing, and connecting the oil passage with the third oil passage in the oil block, the first oil passage is connected to the interior of the housing through the first oil hole, and the third and fourth oil passages are connected through the pump body, a hydraulic circuit is formed in the hydraulic workstation. The output shaft of the pump body is controlled to rotate by the drive device to drive the hydraulic oil in the pump body to enter the hydraulic valve through the third oil passage and the oil passage, and the hydraulic oil is input to the drive carrier by the hydraulic valve, thereby improving the delivery efficiency and stability of the hydraulic oil in the hydraulic workstation.

[0036] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 An exploded view of a hydraulic workstation provided by some embodiments of the present invention is shown.

[0039] Figure 2 An exploded view of a hydraulic workstation provided by some embodiments of the present invention is shown from another perspective;

[0040] Figure 3 This diagram shows a structural schematic of a hydraulic workstation provided by some embodiments of the present invention from one perspective;

[0041] Figure 4 It shows Figure 3 Sectional view of section AA;

[0042] Figure 5 It shows Figure 3 Sectional view of the middle BB section;

[0043] Figure 6 This diagram illustrates a structural schematic of a hydraulic workstation provided by some embodiments of the present invention from another perspective;

[0044] Figure 7 It shows Figure 6 A sectional view of the central CC section;

[0045] Figure 8 The diagram shows a structural schematic of a hydraulic workstation provided by some embodiments of the present invention from another perspective;

[0046] Figure 9 It shows Figure 8 Sectional view of the middle DD section;

[0047] Figure 10 This diagram illustrates a structural schematic of the connection between the valve body and the valve core in a hydraulic workstation, according to some embodiments of the present invention.

[0048] Figure 11 This diagram illustrates a structural schematic of a hydraulic valve in a hydraulic workstation according to some embodiments of the present invention;

[0049] Figure 12 It shows Figure 11 Sectional view of the middle EE section;

[0050] Figure 13 This diagram illustrates a hydraulic valve in a hydraulic workstation from another perspective, according to some embodiments of the present invention.

[0051] Figure 14 It shows Figure 13 Cross-sectional view of the middle FF section.

[0052] Explanation of key component symbols:

[0053] 100-Hydraulic valve; 110-First oil passage; 120-Second oil passage; 130-Valve body; 131-First oil groove; 132-Second oil groove; 133-Guide hole; 140-Valve core; 141-First groove; 142-Second groove; 143-First guide groove; 144-Second guide groove; 150-Steering gear; 200-Box; 210-Oil passage; 220-First oil hole; 300-Drive unit; 400-Oil passage block; 410-Third oil passage; 420-Fourth oil passage; 430-Second oil hole; 440-Pressure relief oil passage; 500-Pump body; 510-Output shaft; 520-First connecting hole; 530-Second connecting hole; 600-Pressure regulating valve; 610-Pressure regulating nut; 620-Reset spring; 630-Relief valve. Detailed Implementation

[0054] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0055] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0059] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 7 As shown, some embodiments of the present invention provide a hydraulic workstation, mainly used in pipeline inspection robots and mining inspection robots. The hydraulic workstation includes a hydraulic valve 100, a housing 200, an oil passage block 400, a pump body 500, and a drive unit 300.

[0060] It should be noted that the hydraulic valve 100 is an automated component operated by pressurized oil. It is controlled by the pressurized oil of the distribution valve and is usually used in combination with a solenoid distribution valve. It can be used for remote control of the on / off of oil, gas, and water pipeline systems in hydropower stations. It is commonly used in hydraulic circuits for clamping, control, and lubrication.

[0061] Among them, the tank 200 is an oil storage tank, through which oil is stored.

[0062] In this embodiment, the driving device 300 is a stepper motor, which is a type of electric motor that converts electrical pulse signals into corresponding angular or linear displacements. For each input pulse signal, the rotor rotates by an angle or moves forward one step. The output angular or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency.

[0063] The inner wall of the housing 200 is provided with an oil passage 210. It should be noted that the trajectory of the oil passage 210 can be any one of a straight line, a curve, a broken line, or a thread, and can be specifically set according to the actual situation.

[0064] In this embodiment, in order to shorten the distance of the oil passage 210 and improve the working efficiency of the hydraulic workstation, the oil passage 210 is straight, and the axis of the oil passage 210 is parallel to the axis of the housing 200.

[0065] Meanwhile, the hydraulic valve 100 is disposed on one side of the housing 200. Specifically, the hydraulic valve 100 is disposed on the outside of the housing 200, and the hydraulic valve 100 communicates with the interior of the housing 200.

[0066] Specifically, the hydraulic valve 100 includes a first oil passage 110 and a second oil passage 120. It should be noted that the first oil passage 110 and the second oil passage 120 are arranged alternately.

[0067] In addition, the oil passage block 400 is set at the open end of the housing 200. The oil passage block 400 is connected to the open end of the housing 200 by bolts so as to seal the open end of the housing 200 and form a sealed receiving space inside the housing 200 so as to store oil through the housing 200.

[0068] At the same time, such as Figure 8 and Figure 9 As shown, a third oil passage 410 and a fourth oil passage 420 are provided at intervals inside the oil passage block 400. The shape of the third oil passage 410 and the fourth oil passage 420 can be any one of the following: T-shaped, L-shaped, straight, broken line, curved, or ring-shaped, and can be specifically set according to the actual situation.

[0069] The pump body 500 is disposed inside the housing 200 and is connected to the inner wall of the oil passage block 400 by bolts to improve the stability of the connection between the pump body 500 and the oil passage block 400. Simultaneously, the output shaft 510 of the pump body 500 is inserted through the oil passage block 400 and connected to the output end of the drive device 300, so that the output shaft 510 of the pump body 500 rotates during the rotation of the output end of the drive device 300.

[0070] In this embodiment, the pump body 500 is a gear pump. A gear pump is a rotary pump that transports or pressurizes liquid by relying on the change and movement of the working volume formed between the pump cylinder and the meshing gears. It consists of two gears, the pump body, and front and rear covers forming two enclosed spaces. When the gears rotate, the volume of the space on the disengaged side increases, creating a vacuum that draws in liquid. Conversely, the volume of the space on the meshing side decreases, forcing the liquid into the pipeline. The suction chamber and discharge chamber are separated by the meshing line of the two gears. The pressure at the discharge port of the gear pump depends entirely on the resistance at the pump outlet.

[0071] Simultaneously, one end of the third oil passage 410 and one end of the fourth oil passage 420 are respectively connected through the pump body 500. Specifically, the pump body 500 has a first connecting hole 520 and a second connecting hole 530 spaced apart. The first connecting hole 520 and the second connecting hole 530 are respectively connected to the internal cavity of the pump body 500. One end of the third oil passage 410 is connected to the internal cavity of the pump body 500 through the first connecting hole 520, and one end of the fourth oil passage 420 is connected to the internal cavity of the pump body 500 through the second connecting hole 530, thereby connecting one end of the third oil passage 410 and one end of the fourth oil passage 420 through the pump body 500.

[0072] In this embodiment, the second oil passage 120 is connected to the other end of the third oil passage 410 via the oil passage 210. It is understood that one end of the oil passage 210, which is disposed in the inner wall of the housing 200, is connected to the second oil passage 120, and the other end of the oil passage 210 is connected to the other end of the third oil passage 410.

[0073] In addition, such as Figures 3 to 5 As shown, the first oil passage 110 is connected to the interior of the housing 200 through a first oil hole 220 provided on the housing 200. Simultaneously, the other end of the fourth oil passage 420 is connected to the interior of the housing 200 through a second oil hole 430 provided on the oil passage block 400, thus connecting the first oil passage 110 and the fourth oil passage 420 to the interior of the housing 200. It should be noted that the interior of the housing 200 is a hollow cavity. Since the first oil passage 110 and the fourth oil passage 420 are connected to the cavity inside the housing 200, they are thus connected through the housing 200.

[0074] like Figure 6 and Figure 7 As shown, in some embodiments of the present invention, the oil passage 400 is further provided with a pressure relief oil passage 440 inside, wherein the pressure relief oil passage 440 is spaced apart from the fourth oil passage 420. Furthermore, one end of the pressure relief oil passage 440 is connected to the third oil passage 410, and the other end of the pressure relief oil passage 440 is connected to the interior of the housing 200, so that the third oil passage 410 is connected to the interior of the housing 200 through the pressure relief oil passage 440.

[0075] Meanwhile, a pressure regulating valve 600 is provided on one side of the pressure relief oil passage 440 to connect or disconnect the pressure relief oil passage 440 from the housing 200. It should be noted that the pressure regulating valve 600 is located on the side wall of the oil passage block 400. When the pressure regulating valve 600 is adjusted to move towards the pressure relief oil passage 440 and seals the middle of the pressure relief oil passage 440, an obstruction is formed in the pressure relief oil passage 440, preventing the housing 200 from connecting with the third oil passage 410 through the pressure relief oil passage 440. When the pressure regulating valve 600 is adjusted to move away from the pressure relief oil passage 440, a passage is formed inside the pressure relief oil passage 440, connecting the third oil passage 410 with the interior of the housing 200.

[0076] like Figure 7 As shown, in some embodiments of the present invention, the pressure regulating valve 600 is disposed through the side wall of the oil passage block 400 to adjust the connection or sealing of the pressure relief oil passage 440.

[0077] The pressure regulating valve 600 includes an adjusting nut 610, a return spring 620, and a relief valve 630. Specifically, the return spring 620 is disposed between the adjusting nut 610 and the relief valve 630. It should be noted that the adjusting nut 610 is threadedly connected to the side wall of the oil passage block 400, meaning that the spring force of the return spring 620 is adjusted by regulating the distance between the adjusting nut 610 and the relief valve 630. For example, when the adjusting nut 610 is rotated to move towards the relief valve 630, the return spring 620 is compressed and stores elastic potential energy, causing the relief valve 630 to move towards the pressure relief passage 440 under the spring force, thereby sealing the pressure relief passage 440. When the pressure adjusting nut 610 is rotated to move it away from the relief valve 630, the return spring 620 gradually returns to its original length, and at the same time drives the relief valve 630 to move away from the pressure relief oil passage 440, so that the pressure relief oil passage 440 connects the third oil passage 410 with the interior of the housing 200.

[0078] Specifically, a limiting groove is provided on the side of the pressure adjusting nut 610 facing the relief valve 630. One end of the return spring 620 is located in the limiting groove, and the other end of the return spring 620 abuts against the relief valve 630. The end of the relief valve 630 facing the pressure relief passage 440 can extend into the pressure relief passage 440 to seal it. It can be understood that by rotating the pressure adjusting nut 610 to control the distance between the pressure adjusting nut 610 and the relief valve 630, the elastic force of the return spring 620 on the relief valve 630 is adjusted, thereby adjusting the distance between the relief valve 630 and the pressure relief passage 440. For example, when the pressure oil in the hydraulic workstation exceeds the preset pressure, the hydraulic oil in the pump body 500 is opened to flow back into the hydraulic valve 100 through the pressure relief passage 440, the third oil passage 410, and the oil passage 210.

[0079] It should be noted that, in some embodiments of the present invention, when the pressure oil in the hydraulic workstation exceeds the preset pressure, the overflow valve 630 is opened to control the hydraulic oil to flow back to the housing 200 through the pressure relief oil passage 440, thereby improving the stability and safety of the hydraulic workstation during operation.

[0080] The hydraulic workstation is equipped with a pressure sensor to monitor the internal pressure of the hydraulic workstation in real time.

[0081] Specifically, the preset pressure of the hydraulic workstation is P, where the value of P ranges from 0 to 8 MPa.

[0082] When the pressure of the hydraulic workstation exceeds the preset pressure, the relief valve 630 opens to improve the stability and safety of the hydraulic workstation during operation.

[0083] like Figure 2 and Figure 10 As shown, in some embodiments of the present invention, the hydraulic valve 100 includes a valve body 130, at least one valve core 140, and at least one servo motor 150.

[0084] It is understood that the number of valve cores 140 and the number of servo motors 150 can be any number of one, two or more, and can be specifically set according to the actual situation.

[0085] The valve body 130 is rotatably sleeved on the valve core 140. It can be understood that the valve core 140 can rotate within the valve body 130. Specifically, the valve core 140 can rotate within the valve body 130 along its own axis.

[0086] Specifically, by connecting the output shaft 510 of the servo motor 150 to the valve core 140, the valve core 140 is driven to rotate during the rotation of the output shaft 510 of the servo motor 150. It should be noted that, in order to improve the stability of the valve core 140 during rotation, the output shaft 510 of the servo motor 150 and the valve core 140 are coaxially connected.

[0087] In this embodiment, one servo motor 150 is connected to one valve core 140, that is, the number of servo motors 150 is equal to the number of valve cores 140.

[0088] Meanwhile, a first oil passage 110 and a second oil passage 120 spaced apart are provided inside the valve body 130 to guide the oil through the first oil passage 110 and the second oil passage 120.

[0089] Specifically, such as Figure 11 and Figure 12 As shown, in this embodiment, the first oil passage 110 is a low-pressure oil passage, and the second oil passage 120 is a high-pressure oil passage, so that the hydraulic valve 100 can adjust the flow efficiency of the oil passage according to the actual situation during operation. For example, when the carrier uses a large amount of oil, the hydraulic valve 100 can be adjusted to supply oil through the second oil passage 120; when the carrier uses a small amount of oil, the hydraulic valve 100 can be adjusted to supply oil through the first oil passage 110, thereby improving the stability of the oil supply.

[0090] In addition, a first oil groove 131 and a second oil groove 132 are provided on one side wall of the valve body 130, and the first oil groove 131 is connected to the first oil passage 110 so that oil enters the first oil passage 110 through the first oil groove 131.

[0091] At the same time, the second oil tank 132 is connected to the second oil passage 120 so that oil enters the second oil passage 120 through the second oil tank 132.

[0092] like Figure 13 As shown, in this embodiment, a plurality of spaced-apart guide holes 133 are provided on another side wall of the valve body 130. The number of guide holes 133 can be two or more of any value, and can be specifically set according to the actual situation.

[0093] Specifically, when the valve core 140 rotates at a first preset angle in the first direction, the first oil passage 110 is connected to the guide hole 133 through the valve core 140. It can be understood that at this time, external oil enters the first oil passage 110 through the first oil groove 131, and the oil entering the first oil passage 110 flows into the guide hole 133 through the valve core 140, and then flows into the carrier connected to the hydraulic valve 100 through the guide hole 133 for the carrier to operate. The carrier can be a pipeline robot or a mining inspection robot, etc.

[0094] It should be noted that when the valve core 140 rotates at a first preset angle in the first direction, the first oil passage 110 is connected to the guide hole 133 through the valve core 140. At the same time, the second oil passage 120 is not connected to the guide hole 133. That is, in this state, oil can only flow into the guide hole 133 through the first oil passage 110 and the valve core 140.

[0095] When the valve core 140 rotates at a second preset angle in the second direction, the second oil passage 120 connects to the guide hole 133 through the valve core 140. It can be understood that at this time, external oil enters the second oil passage 120 through the second oil groove 132, and the oil entering the second oil passage 120 flows into the guide hole 133 through the valve core 140, and then flows through the guide hole 133 into the carrier connected to the hydraulic valve 100 for the carrier's operation. This carrier can be a pipeline robot or a mining inspection robot, etc.

[0096] It should be noted that when the valve core 140 rotates at a second preset angle in the second direction, the second oil passage 120 is connected to the guide hole 133 through the valve core 140. At the same time, the first oil passage 110 is not connected to the guide hole 133. That is, in this state, oil can only flow into the guide hole 133 through the second oil passage 120 and the valve core 140.

[0097] During the rotation of the valve core 140 controlled by the servo motor 150, the first oil passage 110 and the second oil passage 120 provided on the valve body 130 are connected to the guide hole 133 through the valve core 140, thereby adjusting the amount of oil flowing through the hydraulic valve 100. This not only improves the speed of oil quantity adjustment, but also simplifies the oil quantity adjustment and improves the efficiency of oil quantity adjustment.

[0098] like Figure 10 , Figure 13 and Figure 14 As shown, in some embodiments of the present invention, the sidewall of the valve core 140 is provided with an alternating first groove 141 and a second groove 142.

[0099] It should be noted that the number of the first groove 141 and the number of the second groove 142 can be one, two or more, and can be set according to the actual situation.

[0100] Specifically, the first groove 141 and the second groove 142 are strip-shaped grooves, and the extension direction of the first groove 141 and the second groove 142 is the same as the axial direction of the valve core 140.

[0101] Meanwhile, a first guide groove 143 and a second guide groove 144 spaced apart are provided in the circumferential direction of the valve core 140.

[0102] It should be noted that the first guide groove 143 and the second guide groove 144 are respectively annular grooves, and the first guide groove 143 and the second guide groove 144 are respectively disposed at both ends of the valve core 140.

[0103] The first oil passage 110 is connected to the first groove 141 via the first guide groove 143. Specifically, the first oil passage 110 and the first groove 141 are connected to the first guide groove 143. During the rotation of the valve core 140 by the servo motor 150, the first oil passage 110 remains connected to the first groove 141 via the first guide groove 143.

[0104] Simultaneously, the second oil passage 120 is connected to the second groove 142 through the second guide groove 144, that is, the second oil passage 120 and the second groove 142 are respectively connected to the second guide groove 144. Specifically, when the servo motor 150 drives the valve core 140 to rotate, the second oil passage 120 is always connected to the second groove 142 through the second guide groove 144.

[0105] Specifically, when the valve core 140 rotates along the first direction by a first preset angle, the first oil passage 110 communicates with the guide hole 133 through the first groove 141. Specifically, when the valve core 140 rotates along the first direction by a first preset angle, a first groove 141 faces the guide hole 133 and communicates with it. Since the first oil passage 110 communicates with the first groove 141 through the first guide groove 143, at this time, the first oil passage 110 is connected to the guide hole 133. That is, the third oil passage 410 communicates sequentially through the housing 200, the second oil passage 120, the second guide groove 144, the second groove 142, and the guide hole 133 via the oil passage 210.

[0106] When the valve core 140 rotates along the second direction by a second preset angle, the second oil passage 120 communicates with the guide hole 133 through the second groove 142. Specifically, when the valve core 140 rotates along the second direction by a second preset angle, a second groove 142 faces the guide hole 133 and communicates with the guide hole 133. Since the second oil passage 120 communicates with the second groove 142 through the second guide groove 144, at this time, the second oil passage 120 communicates with the guide hole 133, that is, the fourth oil passage 420 communicates sequentially through the first oil passage 110, the first guide groove 143, the first groove 141, and the guide hole 133.

[0107] In this embodiment, there are two first grooves 141 and one second groove 142. The two first grooves 141 are arranged at intervals and are both connected to the first oil passage 110 through the first guide groove 143.

[0108] By providing two first grooves 141, the flow rate of oil in the first oil passage 110 is reduced, making the first oil passage 110 a low-pressure oil passage. Conversely, by providing one second groove 142, the flow rate of oil in the second oil passage 120 is increased, making the second oil passage 120 a high-pressure oil passage.

[0109] In some embodiments of the present invention, the first preset angle is X, wherein the value of X ranges from 42° to 52°. Additionally, the second preset angle is Y, wherein the value of Y ranges from 42° to 52°. It should be noted that the first direction and the second direction are opposite; for example, when the first direction is clockwise, the second direction is counterclockwise. By adjusting the magnitudes of the first and second preset angles, the switching efficiency of hydraulic oil in the first oil passage 110 and the second oil passage 120 in the hydraulic workstation is improved, thereby enhancing the working efficiency of the hydraulic workstation.

[0110] Some embodiments of the present invention also provide an inspection robot, including an inspection robot body and a hydraulic workstation as described in any of the above embodiments, so as to provide power to the inspection robot body through the hydraulic workstation.

[0111] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0112] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0113] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A hydraulic work station characterized by, The hydraulic valve, the tank, the oil passage block, the pump body and the driving device are included. An oil passage is arranged on the inner wall of the tank, and the hydraulic valve is arranged on one side of the tank. The oil passage block is arranged on the opening end of the tank, and the third oil passage and the fourth oil passage are arranged in the oil passage block. The pump body is arranged in the tank, and the output shaft of the pump body is connected with the output end of the driving device. One end of the third oil passage and one end of the fourth oil passage are communicated through the pump body. The second oil passage is communicated with the other end of the third oil passage through the oil passage, and the first oil passage is communicated with the inside of the tank through the first oil hole arranged on the tank. The other end of the fourth oil passage is communicated with the inside of the tank through the second oil hole arranged on the oil passage block. The hydraulic valve includes a valve body, at least one valve core and at least one rudder. The valve body is rotatably arranged on the valve core, and the first oil passage and the second oil passage are arranged in the valve body. A first oil groove and a second oil groove are arranged on one side wall of the valve body, the first oil groove is communicated with the first oil passage, and the second oil groove is communicated with the second oil passage. A plurality of flow guide holes are arranged on the other side wall of the valve body. The output shaft of the rudder is connected with the valve core, so that the valve core is driven to rotate by the rudder. When the valve core rotates in a first direction by a first preset angle, the first oil passage is communicated with the flow guide hole through the valve core. When the valve core rotates in a second direction by a second preset angle, the second oil passage is communicated with the flow guide hole through the valve core. A first connecting hole and a second connecting hole are arranged in the pump body, and the first connecting hole and the second connecting hole are communicated with the cavity in the pump body. One end of the third oil passage is communicated with the first connecting hole, and one end of the fourth oil passage is communicated with the second connecting hole.

2. The hydraulic work station of claim 1, wherein, A pressure relief oil passage is arranged in the oil passage block, one end of the pressure relief oil passage is communicated with the third oil passage, and the other end of the pressure relief oil passage is communicated with the inside of the tank. A pressure regulating valve is arranged on one side of the pressure relief oil passage, so that the pressure relief oil passage is communicated with or disconnected from the tank through the pressure regulating valve.

3. The hydraulic work station of claim 2, wherein, The pressure regulating valve is arranged in the side wall of the oil passage block, and the pressure regulating valve includes a pressure regulating nut, a reset spring and an overflow valve. The reset spring is arranged between the pressure regulating nut and the overflow valve. A limiting groove is arranged on one side of the pressure regulating nut facing the overflow valve, one end of the reset spring is arranged in the limiting groove, and the other end of the reset spring is in contact with the overflow valve. One end of the overflow valve facing the pressure relief oil passage can be inserted into the pressure relief oil passage to seal the pressure relief oil passage.

4. The hydraulic work station of claim 3, wherein, The preset pressure of the hydraulic working station is P, and the value range of P is 0≤P≤8MPa. When the pressure of the hydraulic working station exceeds the preset pressure, the overflow valve is opened.

5. The hydraulic work station of claim 1, wherein, The first preset angle is X, and the value range of X is 42°≤X≤52°. The second preset angle is Y, and a value range of Y is 42°≤Y≤52°.

6. The hydraulic work station of claim 1, wherein, The first direction is opposite to the second direction.

7. The hydraulic work station of claim 1, wherein, The side wall of the valve core is provided with first grooves and second grooves arranged alternately. The valve core is provided with first flow guide grooves and second flow guide grooves arranged alternately in the circumferential direction. The first oil channel communicates with the first groove through the first flow guide groove, and the second oil channel communicates with the second groove through the second flow guide groove.

8. A patrol robot characterized by comprising: The hydraulic work station comprises a patrol robot body and the hydraulic work station of claim 1.

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