Hydraulic equipment with anti-explosion function

Abstract

The invention discloses hydraulic equipment with an anti-explosion function, and relates to the technical field of hydraulic equipment, the hydraulic equipment comprises a hydraulic unit which comprises a hydraulic rod, and a fixing frame and an anti-explosion unit which are arranged on the hydraulic rod, comprising a flow guide assembly arranged on a fixing frame, a sealing assembly arranged in the flow guide assembly, a pressure relief assembly arranged in the flow guide assembly and used for conducting step-by-step pressure relief on hydraulic oil, and a closing assembly arranged in the pressure relief assembly and used for controlling a pressure relief switch. If the pressure is still too high and the pressure relief assembly is completely extruded to one side, the hydraulic oil directly flows back through the pressure relief groove and secondary pressure relief is carried out, normal work of the hydraulic rod is ensured, equipment damage and personnel injury caused by too high oil pressure are effectively avoided, the maintenance cost and the downtime are reduced, and the working efficiency is improved. And the safety and the reliability of the hydraulic system are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic equipment, and in particular to a hydraulic equipment with explosion-proof function. Background Art

[0002] A hydraulic equipment is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it can eliminate the deceleration device, and there is no transmission gap, with smooth motion. Therefore, it is widely used in the hydraulic systems of various machinery.

[0003] Existing hydraulic equipment usually drives an oil pump to rotate through an electric motor. After the oil pump sucks oil from the fuel tank, it outputs pressurized oil, converting mechanical energy into the pressure energy of hydraulic oil. Subsequently, it is transmitted to the oil cylinder or oil motor of the hydraulic machinery through an external pipeline, thereby controlling the direction change, force magnitude, and speed of the hydraulic actuator to meet the action requirements of various hydraulic machinery. However, in actual use, the hydraulic equipment often has too high hydraulic oil pressure delivered by the oil pump, making the hydraulic equipment unable to adjust the internal hydraulic pressure, resulting in the explosion of the oil pipeline and hydraulic machinery, posing serious safety hazards. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned existing hydraulic equipment with explosion-proof function, the present invention is proposed.

[0005] Therefore, the present invention provides a hydraulic equipment with explosion-proof function, and its purpose is to solve the problem that existing hydraulic equipment drives an oil pump to rotate through an electric motor, pressurizes the hydraulic oil and then transports it to the hydraulic machinery. In actual use, the hydraulic equipment often has too high hydraulic oil pressure delivered by the oil pump, making the hydraulic equipment unable to adjust the internal hydraulic pressure, resulting in the explosion of the oil pipeline and hydraulic machinery, posing serious safety hazards.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a hydraulic unit, including a hydraulic rod and a fixing bracket arranged on the hydraulic rod; An explosion-proof unit, including a diversion component arranged on the fixing bracket, a sealing component arranged in the diversion component, a pressure relief component arranged inside the diversion component for gradually relieving the pressure of the hydraulic oil, and a closing component arranged inside the pressure relief component for controlling the closing of the pressure relief switch. The closing component cooperates with the diversion component to control the pressure relief of the hydraulic pressure inside the diversion component; the diversion component has a diversion state and a sealing state. In the diversion state, the diversion component guides the flow of the hydraulic oil. In the sealing state, the diversion component and the sealing component are hermetically connected; A conveying unit, including a conveying pipe arranged on the top of the diversion component for conveying the hydraulic oil and a return pipe arranged on the top of the diversion component.

[0007] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: the diversion assembly includes a connection housing arranged on the fixed frame, an export groove arranged inside the connection housing, and an export piece arranged inside the export groove, and the export piece is connected to the hydraulic rod.

[0008] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: a guiding groove is arranged inside the connection housing, an inlet groove is connected to one side of the guiding groove, an inlet piece is rotatably connected inside the inlet groove, and the inlet piece is connected to the conveying pipe.

[0009] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: a pressure relief groove is arranged inside the connection housing, a return groove is connected to one side of the pressure relief groove, a return piece is arranged inside the return groove, and the return piece is connected to the return pipe.

[0010] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: the sealing assembly includes fixing plates arranged on both sides of the connection housing, top blocks arranged at the other ends of the fixing plates, a first return spring arranged on the outer diameter of the top blocks, and a receiving piece arranged at the other end of the first return spring, and the receiving piece is slidably connected to the connection housing.

[0011] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: a sliding piece is arranged on one side of the fixing plate, and the inlet groove is slidably connected to the receiving piece.

[0012] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: a sealing ring is arranged on the outer diameter of the sliding piece, and the outer diameter of the sealing ring is connected to the connection housing.

[0013] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: the pressure relief assembly includes a moving piece slidably arranged inside the connection housing, a second return spring arranged inside the moving piece, a connection block arranged at the other end of the second return spring, a moving ring plate arranged at the other end of the connection block, and a blocking rod arranged inside the moving ring plate, and the moving ring plate is slidably connected to the connection housing.

[0014] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: a sealing plate is arranged on the outer diameter of the moving piece, a conduit piece is arranged inside the sealing plate, and the conduit piece cooperates with the closing assembly.

[0015] As a preferred embodiment of the hydraulic equipment with explosion-proof function according to the present invention, wherein: the closing assembly includes a rotating shaft rotatably arranged inside the moving ring plate, a support rod arranged on the rotating shaft, a rotating collar arranged on the outer diameter of the support rod, and a closing plate arranged on the rotating collar, and the closing plate is rotatably connected to the moving ring plate and cooperates with the blocking rod at the same time.

[0016] Advantages of the present invention: The safety hazard of excessive oil pressure is effectively solved through a two-stage pressure relief mechanism. During normal operation, the hydraulic oil enters the inside of the hydraulic rod through the diversion component. When the hydraulic rod is fully loaded and external hydraulic oil continues to be input, the excess hydraulic oil squeezes the pressure relief component and the sealing component, pushing them to move and triggering the closing component, causing the hydraulic oil to flow into the rear end of the conduit component. When the pressure relief component reaches the pressure relief groove, the excess hydraulic oil flows back through the pressure relief groove for pressure relief, which is the first-stage pressure relief. If the pressure is still too high, the pressure relief component is completely squeezed to one side, and the hydraulic oil directly flows back through the pressure relief groove for the second-stage pressure relief. After the pressure is released, the pressure relief component resets under the action of the sealing component, re-sealing the pressure relief groove and the closing component, ensuring the normal operation of the hydraulic rod, effectively avoiding equipment damage and personal injury caused by excessive oil pressure, reducing maintenance costs and downtime, and improving the safety and reliability of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the hydraulic device with explosion-proof function of the present invention.

[0019] Figure 2 It is a schematic diagram of the side structure of the hydraulic device with explosion-proof function of the present invention.

[0020] Figure 3 It is a schematic diagram of the internal structure of the hydraulic device with explosion-proof function of the present invention.

[0021] Figure 4 It is for the hydraulic device with explosion-proof function of the present invention Figure 3 The enlarged schematic diagram of part A.

[0022] Figure 5 It is a schematic diagram of the sectional structure of the pressure relief component of the hydraulic device with explosion-proof function of the present invention.

[0023] Figure 6 It is for the hydraulic device with explosion-proof function of the present invention Figure 5 The enlarged schematic diagram of part B.

[0024] Figure 7 It is for the hydraulic device with explosion-proof function of the present invention Figure 5 The enlarged schematic diagram of part C.

[0025] Figure 8Schematic side view of the pressure relief component of the explosion-proof hydraulic device of the present invention.

[0026] Figure 9 For the explosion-proof hydraulic device of the present invention Figure 8 Schematic enlarged view of the structure at D.

[0027] Figure 10 Schematic view of the closing component structure of the explosion-proof hydraulic device of the present invention.

[0028] Explanation of reference numerals: 100, hydraulic unit; 101, hydraulic rod; 102, fixing bracket; 200, explosion-proof unit; 201, diversion component; 2011, connecting housing; 2012, export groove; 2013, export piece; 2014, guiding groove; 2015, import groove; 2016, import piece; 2017, pressure relief groove; 2018, return groove; 2019, return piece; 202, sealing component; 2021, fixing plate; 2022, top block; 2023, first return spring; 2024, receiving piece; 2025, sliding piece; 2026, sealing ring; 203, pressure relief component; 2031, moving piece; 2032, second return spring; 2033, connecting block; 2034, moving ring plate; 2035, blocking rod; 2036, sealing plate; 2037, conduit piece; 204, closing component; 2041, rotating shaft; 2042, support rod; 2043, rotating collar; 2044, closing plate; 300, conveying unit; 301, conveying pipe; 302, return pipe. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be given in conjunction with the accompanying drawings of the specification.

[0030] Example 1, referring to Figures 1-3 , which is the first embodiment of the present invention, provides an explosion-proof hydraulic device, which includes: a hydraulic unit 100, an explosion-proof unit 200, and a conveying unit 300.

[0031] Among them, the hydraulic unit 100 includes a hydraulic rod 101 and a fixing bracket 102 provided on the hydraulic rod 101; The explosion-proof unit 200 includes a diversion component 201 disposed on the fixing frame 102, a sealing component 202 disposed within the diversion component 201, a pressure relief component 203 disposed inside the diversion component 201 for gradually relieving the pressure of the hydraulic oil, and a closing component 204 disposed within the pressure relief component 203 for controlling the closing of the pressure relief switch. The closing component 204 cooperates with the diversion component 201 to control the pressure relief of the hydraulic pressure inside the diversion component 201. The diversion component 201 has a diversion state and a sealing state. In the diversion state, the diversion component 201 guides the flow of the hydraulic oil. In the sealing state, the diversion component 201 is hermetically connected to the sealing component 202. The conveying unit 300 includes a conveying pipe 301 disposed on the top of the diversion component 201 for conveying the hydraulic oil, and a return pipe 302 disposed on the top of the diversion component 201. When the hydraulic rod 101 is operating normally, the hydraulic oil is conveyed into the interior of the conveying pipe 301 by an oil pump, and under the conveyance of the conveying pipe 301, it enters the interior of the diversion component 201. When the hydraulic oil enters the interior of the diversion component 201, it starts to slightly squeeze and move the sealing component 202 and the pressure relief component 203 inside the diversion component 201, so that the hydraulic oil entering the interior of the diversion component 201 can be conveyed into the hydraulic rod 101, enabling the hydraulic rod 101 to perform normal hydraulic work. When the hydraulic oil inside the hydraulic rod 101 reaches full load and the oil pump is still conveying the hydraulic oil, the excess hydraulic oil starts to be stored inside the diversion component 201, and starts to squeeze the sealing component 202 and the pressure relief component 203, causing the pressure relief component 203 inside the diversion component 201 to start moving to one side, preparing to start pressure relief. At the same time, during the movement of the pressure relief component 203, the closing component 204 inside the pressure relief component 203 fits onto the pressure relief component 203, thereby triggering the closing component 204 by the pressure relief component 203, causing the closing component 204 to flip open to one side, so that the excess hydraulic oil enters the pressure relief component 203 through the closing component 204. And during the movement of the pressure relief component 203, it moves to the pressure relief port of the diversion component 201, causing the excess hydraulic oil entering the interior of the pressure relief component 203 to start reflux pressure relief, performing primary pressure relief to ensure the pressure stability inside the hydraulic rod 101. When the primary pressure relief cannot meet the requirement, the pressure relief component 203 is completely squeezed to one side by the hydraulic oil inside the diversion component 201, causing the pressure relief port inside the diversion component 201 to be fully opened, so that the excess hydraulic oil inside the diversion component 201 starts to reflux for secondary pressure relief, ensuring the stability of the hydraulic rod 101. And when the pressure inside the diversion component 201 decreases after the pressure relief is completed, the pressure relief component 203 returns to its original position under the extrusion of the sealing component 202 on one side, ensuring the stability of the remaining hydraulic oil inside the diversion component 201, and can effectively avoid the situation of explosion of the hydraulic rod 101 due to excessive hydraulic oil and excessive pressure.

[0032] During use, when the hydraulic oil enters the inside of the diversion assembly 201, a slight extrusion movement is started on the sealing assembly 202 and the pressure relief assembly 203 inside the diversion assembly 201, so that the hydraulic oil entering the inside of the diversion assembly 201 can be transported into the hydraulic rod 101, enabling the hydraulic rod 101 to perform normal hydraulic work. When the hydraulic oil inside the hydraulic rod 101 reaches full load and the oil pump is still transporting hydraulic oil, the excess hydraulic oil will start to be stored inside the diversion assembly 201 and begin to squeeze the sealing assembly 202 and the pressure relief assembly 203, causing the pressure relief assembly 203 inside the diversion assembly 201 to start moving to one side, preparing to start pressure relief. At the same time, during the movement of the pressure relief assembly 203, the closing assembly 204 inside the pressure relief assembly 203 fits onto the pressure relief assembly 203, thus triggering the closing assembly 204 by the pressure relief assembly 203, causing the closing assembly 204 to flip open to one side, so that the excess hydraulic oil enters the pressure relief assembly 203 through the closing assembly 204. And during the movement of the pressure relief assembly 203, it moves to the pressure relief port of the diversion assembly 201, causing the excess hydraulic oil entering the pressure relief assembly 203 to start refluxing for pressure relief, performing primary pressure relief to ensure the pressure stability inside the hydraulic rod 101. When the primary pressure relief cannot meet the requirement, the pressure relief assembly 203 is completely squeezed to one side by the hydraulic oil inside the diversion assembly 201, causing the pressure relief port inside the diversion assembly 201 to be fully opened, so that the excess hydraulic oil inside the diversion assembly 201 starts to reflux for secondary pressure relief to ensure the stability of the hydraulic rod 101. And when the internal pressure of the diversion assembly 201 decreases after the pressure relief is completed, the pressure relief assembly 203 returns to its original position under the extrusion of the sealing assembly 202 on one side, ensuring the stability of the remaining hydraulic oil inside the diversion assembly 201, which can effectively avoid the situation of explosion of the hydraulic rod 101 due to excessive hydraulic oil and excessive pressure.

[0033] Example 2, refer to Figures 1-6, which is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is as follows: The diversion assembly 201 includes a connection housing 2011 disposed on the fixed frame 102, a discharge groove 2012 disposed inside the connection housing 2011, and a discharge member 2013 disposed inside the discharge groove 2012. The discharge member 2013 is connected to the hydraulic rod 101. A guide groove 2014 is provided inside the connection housing 2011. An inlet groove 2015 is connected to one side of the guide groove 2014. An inlet member 2016 is rotatably connected inside the inlet groove 2015. The inlet member 2016 is connected to the delivery pipe 301. A pressure relief groove 2017 is provided inside the connection housing 2011. A return groove 2018 is connected to one side of the pressure relief groove 2017. A return member 2019 is provided inside the return groove 2018. The return member 2019 is connected to the return pipe 302. When the hydraulic rod 101 is performing normal hydraulic work, hydraulic oil is delivered to the delivery pipe 301 by an external oil pump. The delivery pipe 301 delivers the hydraulic oil inside the connection housing 2011. Under the delivery of the guide groove 2014, the hydraulic oil enters the connection housing 2011, and the entering hydraulic oil begins to squeeze the receiving member 2024, causing the receiving member 2024 to squeeze the first return spring 2023 and slide into the slider 2025, so that the receiving member 2024 is disengaged from the discharge groove 2012, allowing the hydraulic oil to enter the discharge member 2013 inside the discharge groove 2012, and then enter the inside of the hydraulic rod 101 for normal hydraulic drive.

[0034] Compared with Embodiment 1, further, the sealing assembly 202 includes fixing plates 2021 disposed on both sides of the connection housing 2011, top blocks 2022 disposed at the other ends of the fixing plates 2021, first return springs 2023 disposed on the outer diameters of the top blocks 2022, and receiving members 2024 disposed at the other ends of the first return springs 2023. The receiving members 2024 are slidably connected to the connection housing 2011. A slider 2025 is provided on one side of the fixing plate 2021. The inlet groove 2015 is slidably connected to the receiving member 2024. A sealing ring 2026 is provided on the outer diameter of the slider 2025. The outer diameter of the sealing ring 2026 is connected to the connection housing 2011. When the hydraulic rod 101 is performing normal hydraulic drive, the hydraulic oil squeezes the receiving member 2024, causing the receiving member 2024 to squeeze the first return spring 2023 and fit against the fixing plate 2021, so that the hydraulic oil can flow smoothly through the inside of the connection housing 2011, ensuring the stability of the operation of the hydraulic rod 101. At the same time, when the hydraulic rod 101 is not working, the receiving member 2024 can close the discharge groove 2012 to ensure the sealing between the hydraulic rod 101 and the inside of the connection housing 2011.

[0035] During use, when the hydraulic rod 101 is performing normal hydraulic work, hydraulic oil is transported into the conveying pipe 301 by an external oil pump. The conveying pipe 301 transports the hydraulic oil into the interior of the connecting housing 2011. Under the conveyance of the guiding groove 2014, the hydraulic oil enters the connecting housing 2011, and the entering hydraulic oil begins to squeeze the receiving member 2024, causing the receiving member 2024 to squeeze the first reset spring 2023 and slide into the interior of the sliding member 2025. As a result, the receiving member 2024 disengages from the guiding groove 2012, allowing the hydraulic oil to enter the guiding member 2013 inside the guiding groove 2012, and then enter the interior of the hydraulic rod 101 for normal hydraulic drive. When the hydraulic rod 101 is performing normal hydraulic drive, the hydraulic oil squeezes the receiving member 2024, causing the receiving member 2024 to squeeze the first reset spring 2023 and fit against the fixing plate 2021, enabling the hydraulic oil to flow smoothly through the interior of the connecting housing 2011, ensuring the stability of the operation of the hydraulic rod 101. At the same time, when the hydraulic rod 101 is not in operation, the receiving member 2024 can close the guiding groove 2012 to ensure the sealing performance between the hydraulic rod 101 and the interior of the connecting housing 2011.

[0036] The remaining structures are the same as those in Embodiment 1.

[0037] Embodiment 3, referring to Figures 1-10, which is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is as follows: The pressure relief component 203 includes a moving member 2031 slidably disposed inside the connection housing 2011, a second return spring 2032 disposed inside the moving member 2031, a connection block 2033 disposed at the other end of the second return spring 2032, a moving ring plate 2034 disposed at the other end of the connection block 2033, and a blocking rod 2035 is disposed inside the moving ring plate 2034. The moving ring plate 2034 is slidably connected to the connection housing 2011. A sealing plate 2036 is disposed on the outer diameter of the moving member 2031, and a conduit member 2037 is disposed inside the sealing plate 2036. The conduit member 2037 cooperates with the closing component 204. The closing component 204 includes a rotating shaft 2041 rotatably disposed inside the moving ring plate 2034, a support rod 2042 disposed on the rotating shaft 2041, a rotating collar 2043 disposed on the outer diameter of the support rod 2042, and a closing plate 2044 disposed on the rotating collar 2043. The closing plate 2044 is rotatably connected to the moving ring plate 2034 and cooperates with the blocking rod 2035. When the hydraulic pressure inside the hydraulic rod 101 reaches full load, the excess hydraulic oil entering from the inlet member 2016 begins to be squeezed inside the connection housing 2011, causing the sealing component 202 to contract to one side. At the same time, the moving ring plate 2034 is pushed by the hydraulic oil towards the sealing plate 2036. The moving ring plate 2034 drives the connection block 2033 to squeeze the second return spring 2032 into the moving member 2031. At the same time, the moving ring plate 2034 fits on the sealing plate 2036. The closing plate 2044 contacts the conduit member 2037 inside the sealing plate 2036, and the closing plate 2044 is pushed by the conduit member 2037 at the top so that the closing plate 2044 and the rotating collar 2043 rotate around the support rod 2042 to open. At the same time, because the closing plate 2044 is limited by the blocking rod 2035, the closing plate 2044 can only rotate to one side, allowing the hydraulic oil on the other side of the moving ring plate 2034 to enter the other end of the sealing plate 2036 through the conduit member 2037. And under the extrusion of the hydraulic oil inside the connection housing 2011, the moving member 2031 also begins to continuously move to the right until the other end of the moving member 2031 begins to squeeze the sealing component 202 on the right side, and the moving member 2031 opens the pressure relief groove 2017, allowing the hydraulic oil entering the sealing plate 2036 to start entering the inside of the return member 2019 through the pressure relief groove 2017, and the excess hydraulic oil is re-transported back through the return member 2019 to start the first-stage pressure relief to ensure the stability of the hydraulic pressure inside the hydraulic rod 101. If the first-stage pressure relief still cannot meet the hydraulic oil pressure inside the connection housing 2011, the hydraulic oil inside the connection housing 2011 will completely squeeze the moving member 2031 to the right, so that the moving ring plate 2034 at one end of the moving member 2031 completely squeezes the sealing component 202.Expose the pressure relief groove 2017 completely inside the connection housing 2011, so that the hydraulic oil inside the connection housing 2011 directly reflows back into the inside of the reflux member 2019 through the pressure relief groove 2017, and then is redelivered back to the oil transportation equipment for complete secondary pressure relief. After the pressure relief is completed, when the hydraulic pressure inside the connection housing 2011 is not high, the sealing assembly 202 pushes the movable ring plate 2034 back to its original position, causing the movable member 2031 to return to its original position. At the same time, the movable ring plate 2034 also disengages from the sealing plate 2036 under the action of the second return spring 2032, enabling the conduit member 2037 to disengage from the inside of the closing plate 2044, and the closing plate 2044 closes again to ensure the stable operation of the hydraulic pressure inside the hydraulic rod 101.

[0038] During use, when the hydraulic pressure inside the hydraulic rod 101 reaches full load, the excess hydraulic oil entering from the inlet part 2016 starts to be squeezed inside the connection housing 2011, causing the sealing assembly 202 to contract to one side. At the same time, the moving ring plate 2034 is pushed by the hydraulic oil towards the sealing plate 2036. The moving ring plate 2034 drives the connecting block 2033 to squeeze the second return spring 2032 into the moving part 2031. At the same time, the moving ring plate 2034 fits on the sealing plate 2036. The closing plate 2044 contacts the conduit part 2037 inside the sealing plate 2036, and the closing plate 2044 is pushed upwards by the conduit part 2037, causing the closing plate 2044 and the rotating collar 2043 to rotate around the support rod 2042, thus opening. At the same time, because the closing plate 2044 is limited by the blocking rod 2035, the closing plate 2044 can only rotate to one side, allowing the hydraulic oil on the other side of the moving ring plate 2034 to enter the other end of the sealing plate 2036 through the conduit part 2037. And under the extrusion of the hydraulic oil inside the connection housing 2011, the moving part 2031 also starts to continuously move to the right until the other end of the moving part 2031 starts to squeeze the sealing assembly 202 on the right side, and the moving part 2031 opens the pressure relief groove 2017, enabling the hydraulic oil entering the sealing plate 2036 to start entering the return part 2019 through the pressure relief groove 2017, and the excess hydraulic oil is re-transported back through the return part 2019 to start the first-stage pressure relief to ensure the stable hydraulic pressure inside the hydraulic rod 101. If the first-stage pressure relief still cannot meet the hydraulic oil pressure inside the connection housing 2011, the hydraulic oil inside the connection housing 2011 will completely squeeze the moving part 2031 to the right, so that the moving ring plate 2034 at one end of the moving part 2031 completely squeezes the sealing assembly 202, exposing the pressure relief groove 2017 completely inside the connection housing 2011, allowing the hydraulic oil inside the connection housing 2011 to directly flow back into the return part 2019 through the pressure relief groove 2017, thereby re-transporting it back to the oil delivery equipment for the fully expanded second-stage pressure relief. And after the pressure relief is completed, when the hydraulic pressure inside the connection housing 2011 is not high, the sealing assembly 202 pushes the moving ring plate 2034 back to its original position, causing the moving part 2031 to return to its original position. At the same time, the moving ring plate 2034 also disengages from the sealing plate 2036 under the action of the second return spring 2032, causing the conduit part 2037 to disengage from the inside of the closing plate 2044, and the closing plate 2044 closes again to ensure the stable operation of the hydraulic pressure inside the hydraulic rod 101.

[0039] The remaining structure is the same as that of Embodiment 2.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A hydraulic device with explosion-proof function, characterized in that: Comprising: A hydraulic unit (100), including a hydraulic rod (101) and a fixing bracket (102) provided on the hydraulic rod (101); An explosion-proof unit (200), including a diversion assembly (201) provided on the fixing bracket (102), a sealing assembly (202) provided inside the diversion assembly (201), a pressure relief assembly (203) provided inside the diversion assembly (201) for gradually relieving the pressure of the hydraulic oil, and a closing assembly (204) provided inside the pressure relief assembly (203) for controlling the closing of the pressure relief switch. The closing assembly (204) cooperates with the diversion assembly (201) to control the pressure relief of the hydraulic pressure inside the diversion assembly (201). The diversion assembly (201) has a diversion state and a sealing state. In the diversion state, the diversion assembly (201) guides the flow of the hydraulic oil. In the sealing state, the diversion assembly (201) and the sealing assembly (202) are hermetically connected; A conveying unit (300), including a conveying pipe (301) provided on the top of the diversion assembly (201) for conveying the hydraulic oil, and a return pipe (302) provided on the top of the diversion assembly (201).

2. The hydraulic equipment with explosion-proof function according to claim 1, characterized in that: The diversion assembly (201), including a connection housing (2011) provided on the fixing bracket (102), a discharge groove (2012) provided inside the connection housing (2011), and a discharge member (2013) provided inside the discharge groove (2012), and the discharge member (2013) is connected to the hydraulic rod (101).

3. The explosion-proof hydraulic equipment according to claim 2, wherein: A guiding groove (2014) is provided inside the connection housing (2011). An inlet groove (2015) is connected to one side of the guiding groove (2014). An inlet member (2016) is rotatably connected inside the inlet groove (2015), and the inlet member (2016) is connected to the conveying pipe (301).

4. The explosion-proof hydraulic equipment according to claim 3, characterized in that: A pressure relief groove (2017) is provided inside the connection housing (2011). A return groove (2018) is connected to one side of the pressure relief groove (2017). A return member (2019) is provided inside the return groove (2018), and the return member (2019) is connected to the return pipe (302).

5. The explosion-proof hydraulic equipment according to claim 4, characterized in that: The sealing assembly (202), including fixing plates (2021) provided on both sides of the connection housing (2011), top blocks (2022) provided at the other ends of the fixing plates (2021), a first return spring (2023) provided on the outer diameter of the top blocks (2022), and a receiving member (2024) provided at the other end of the first return spring (2023), and the receiving member (2024) is slidably connected to the connection housing (2011).

6. The explosion-proof hydraulic equipment according to claim 5, wherein: A sliding member (2025) is provided on one side of the fixing plate (2021), and the inlet groove (2015) is slidably connected to the receiving member (2024).

7. The explosion-proof hydraulic equipment according to claim 6, characterized in that: A sealing ring (2026) is provided on the outer diameter of the sliding member (2025), and the outer diameter of the sealing ring (2026) is connected to the connection housing (2011).

8. The explosion-proof hydraulic equipment according to claim 7, characterized in that: The pressure relief component (203) includes a moving part (2031) slidably arranged inside the connecting housing (2011), a second return spring (2032) arranged inside the moving part (2031), a connecting block (2033) arranged at the other end of the second return spring (2032), a moving ring plate (2034) arranged at the other end of the connecting block (2033), and a blocking rod (2035) is arranged inside the moving ring plate (2034), and the moving ring plate (2034) is slidably connected to the connecting housing (2011).

9. The explosion-proof hydraulic equipment according to claim 8, characterized in that: A sealing plate (2036) is arranged on the outer diameter of the moving part (2031), a conduit part (2037) is arranged inside the sealing plate (2036), and the conduit part (2037) cooperates with the closing component (204).

10. The explosion-proof hydraulic equipment according to claim 9, characterized in that: The closing component (204) includes a rotating shaft (2041) rotatably arranged inside the moving ring plate (2034), a support rod (2042) arranged on the rotating shaft (2041), a rotating collar (2043) arranged on the outer diameter of the support rod (2042), and a closing plate (2044) arranged on the rotating collar (2043), and the closing plate (2044) is rotatably connected to the moving ring plate (2034) and cooperates with the blocking rod (2035) at the same time.

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