Hydraulic medium conversion device

Abstract

The present invention belongs to the technical field of hydraulic devices, and specifically relates to a hydraulic medium conversion device, including a pressure supply tank, a new medium storage tank and a combined oil cylinder; a piston assembly is slidably connected in the oil cylinder barrel of the combined oil cylinder, the space formed by the oil cylinder barrel and the outside of the piston assembly is an outer chamber, and the space formed by the oil cylinder barrel and the inside of the piston assembly is an inner chamber; the outer chamber is connected to the pressure supply tank, and the piston assembly is driven to move in the oil cylinder barrel by the medium in the outer chamber; the inner chamber is connected to the new medium storage tank and the new medium delivery pipeline. The hydraulic system conversion device of the present invention can convert the power of the medium, thereby continuously outputting high-pressure medium, and the two sets of medium spaces are independent of each other, so that the two media are effectively isolated, with a simple structure, safety and high efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic devices, and in particular relates to a hydraulic medium conversion device. Background Art

[0002] Hydraulic power devices have important applications in production, especially in some special fields, where two sets of hydraulic media are required to exist at the same time. For example, the hydraulic devices for comprehensive mining in coal mines need to use two media, emulsion and hydraulic oil, as hydraulic power sources. The most convenient hydraulic source for comprehensive mining in coal mines is emulsion; some other equipment uses hydraulic motors to drive machinery, such as lifting equipment, hydraulic anchor drilling rigs, hydraulic winches, etc. General hydraulic motors cannot be driven by emulsions. Such equipment requires another set of oil pump facilities. The use of two sets of oil pump equipment will cause problems such as system complexity and reduced safety. Summary of the invention

[0003] In view of the above-mentioned defects in the prior art, the object of the present invention is to provide a hydraulic medium conversion device to complete the safe and stable conversion of the hydraulic medium power source.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a hydraulic medium conversion device, including a pressure supply tank, a new medium storage tank and a combined oil cylinder; a piston assembly is slidably connected to the cylinder barrel of the combined oil cylinder, the space formed by the cylinder barrel and the outside of the piston assembly is an outer chamber, and the space formed by the cylinder barrel and the inside of the piston assembly is an inner chamber; the outer chamber is connected to the pressure supply tank, and the piston assembly is driven to move in the cylinder barrel by the medium in the outer chamber; the inner chamber is connected to the new medium storage tank and the new medium delivery pipeline.

[0005] Furthermore, the piston assembly includes a piston rod and a sliding sealing body arranged at both ends of the piston rod, the sliding sealing body is slidably connected to the inner wall of the cylinder barrel, a sealing ring is arranged between the outer wall of the sliding sealing body and the inner wall of the cylinder barrel, the space enclosed by the outer wall of the piston rod, the inner wall of the cylinder barrel and the sliding sealing body is an inner chamber, the inner wall of the cylinder barrel is fixed with a spacing guide sleeve, the spacing guide sleeve is slidably connected to the outer wall of the piston rod, and the spacing guide sleeve divides the inner chamber into two parts.

[0006] Furthermore, the cylinder barrel is provided with a first liquid inlet and a second liquid inlet connected to the outer chamber, the pressure liquid supply box is connected to the first liquid inlet through a first liquid inlet pipe, and the pressure liquid supply box is connected to the second liquid inlet through a second liquid inlet pipe. The first liquid inlet and the second liquid inlet are distributed on both sides of the piston assembly, and the piston assembly divides the outer chamber into two parts.

[0007] Furthermore, the pressure liquid supply box is provided with a reversing valve, which is respectively connected to the first liquid inlet pipe and the second liquid inlet pipe; one end of the piston rod is connected to the transmission rod, the transmission rod extends outside the cylinder barrel, and the transmission rod is connected to the reversing device, and the reversing device is driven by the movement of the piston rod to control the reversing valve to perform reversing.

[0008] Furthermore, the reversing device includes a reversing fork, which is connected to a fixed frame through a spring tube, one end of the spring tube is hinged to the fixed frame, and the other end of the spring tube is hinged to a lever of the reversing fork, the middle part of the lever is hinged to the fixed frame, and the end of the spring tube close to the reversing fork is connected to the transmission rod.

[0009] Furthermore, the reversing of the reversing valve is controlled by a reversing valve handle, and the position of the reversing valve handle is controlled by a reversing device.

[0010] Furthermore, the transmission rod is connected to the spring tube via a chain, and the connection points at both ends of the chain are on the same horizontal line.

[0011] Furthermore, the spring cylinder comprises a spring and a cylinder sleeved on the outside of the spring, and a limiting frame with a spacing from the spring cylinder is arranged on the outside of the spring cylinder, and the limiting frame is connected to the fixing frame.

[0012] Furthermore, the oil cylinder barrel is provided with a third liquid inlet and a fourth liquid inlet connected to the inner chamber, the third liquid inlet is connected to the first medium pipeline, and the fourth liquid inlet is connected to the second medium pipeline; the new medium storage tank is provided with a tank inlet pipeline and a tank outlet pipeline, the first medium pipeline is respectively connected to the tank outlet pipeline and the new medium external delivery pipeline through branch pipelines, the second medium pipeline is respectively connected to the tank outlet pipeline and the new medium external delivery pipeline through branch pipelines, and the third liquid inlet and the fourth liquid inlet are arranged on both sides of the spacing guide sleeve.

[0013] Furthermore, a one-way valve is respectively arranged on each branch pipeline.

[0014] The beneficial effects of the present invention are as follows: the hydraulic system conversion device of the present invention can perform power conversion on the medium, thereby continuously outputting the high-pressure medium, the two sets of medium spaces are independent of each other, so that the two media are effectively isolated, the structure is simple, safe and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the device;

[0016] In the figure: 1, pressure supply tank, 2, new medium storage tank, 3, cylinder barrel, 4, outer chamber, 5, inner chamber, 6, piston rod, 7, sliding seal body, 8, spacing guide sleeve, 9, first liquid inlet, 10, second liquid inlet, 11, first liquid inlet pipe, 12, second liquid inlet pipe, 13, reversing valve, 14, transmission rod, 15, reversing fork, 16, spring cylinder, 17, fixed frame, 18, lever, 19, reversing valve handle, 20, chain, 21, limit frame, 22, third liquid inlet, 23, fourth liquid inlet, 24, first medium pipeline, 25, second medium pipeline, 26, one-way valve, 27, fixed square pin, 28, first rotating shaft, 29, second rotating shaft, 30, third rotating shaft, 31. New medium delivery pipeline, 32. Storage tank inlet pipeline, 33. Storage tank outlet pipeline, 34. Branch pipeline. DETAILED DESCRIPTION

[0017] In order to make the structure and function of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0018] See attached Figure 1 The hydraulic medium conversion device comprises a pressure supply tank 1, a new medium storage tank 2 and a combined oil cylinder; a piston assembly is slidably connected in the cylinder barrel 3 of the combined oil cylinder, the space formed by the cylinder barrel and the piston assembly outside is an outer chamber 4, and the space formed by the cylinder barrel and the piston assembly inside is an inner chamber 5; the outer chamber 4 is connected to the pressure supply tank 1, and the piston assembly is driven to move in the cylinder barrel by the medium in the outer chamber; the inner chamber 5 is connected to the new medium storage tank 2 and the new medium delivery pipeline 31. The medium in the pressure supply tank 1 is continuously input and output, so that the piston assembly reciprocates in the cylinder barrel, so that the medium in the inner chamber is continuously output, thereby realizing the continuous conversion of the hydraulic energy of the two media, inputting a high-pressure medium at one end, and continuously outputting another high-pressure medium at the other end, so that the output high-pressure medium can be transported to the hydraulic device over a long distance, and the two media can be isolated from each other to avoid the occurrence of medium contamination.

[0019] Furthermore, the piston assembly includes a piston rod 6 and a sliding seal body 7 disposed at both ends of the piston rod, the sliding seal body 7 is slidably connected to the inner wall of the oil cylinder 3, a sealing ring is disposed between the outer wall of the sliding seal body and the inner wall of the oil cylinder, the space enclosed by the outer wall of the piston rod 6, the inner wall of the oil cylinder 3 and the sliding seal body 7 is an inner chamber 5, the inner wall of the oil cylinder is fixed with a spacing guide sleeve 8 through a fixed square pin 27, the spacing guide sleeve 8 is slidably connected to the outer wall of the piston rod 6, and the spacing guide sleeve 8 divides the inner chamber 5 into two parts. The inner chamber serves as a working chamber for pressurized output of a new medium, and the new medium in the inner chamber is continuously pressurized and output through the reciprocating motion of the piston assembly.

[0020] Furthermore, the cylinder barrel is provided with a first liquid inlet 9 and a second liquid inlet 10 connected to the outer chamber, the pressure liquid supply box 1 is connected to the first liquid inlet 9 through a first liquid inlet pipe 11, and the pressure liquid supply box is connected to the second liquid inlet 10 through a second liquid inlet pipe 12. The first liquid inlet 9 and the second liquid inlet 10 are distributed on both sides of the piston assembly, and the piston assembly divides the outer chamber 4 into two parts.

[0021] Furthermore, the pressure liquid supply box is provided with a reversing valve 13, which is respectively connected to the first liquid inlet pipe 11 and the second liquid inlet pipe 12; one end of the piston rod 6 is connected to the transmission rod 14, the transmission rod 14 extends outside the cylinder barrel 3, and the transmission rod 14 is connected to the reversing device, and the reversing device is driven by the movement of the piston rod 6 to control the reversing valve 13 to perform reversing.

[0022] Furthermore, the reversing device includes a reversing fork 15, which is connected to a fixing frame 17 through a spring barrel 16, one end of the spring barrel 16 is hinged to the fixing frame 17, and the other end of the spring barrel 16 is hinged to a lever 18 of the reversing fork, the middle of the lever 18 is hinged to the fixing frame 17, and one end of the spring barrel 16 close to the reversing fork 15 is connected to a transmission rod. The reversing valve 13 controls the reversing through a reversing valve handle 19, and the position of the reversing valve handle 19 is controlled by the reversing fork 15. The transmission rod 14 is connected to the spring barrel through a chain 20, and the connection points at both ends of the chain 20 are on the same horizontal line.

[0023] Based on the above technical solution, one end of the spring barrel 16 is hinged to the fixed frame 17 through the first rotating shaft 28, the other end of the spring barrel 16 is hinged to the lever 18 of the reversing fork through the second rotating shaft 29, and the middle part of the lever 18 is hinged to the fork of the fixed frame 17 through the third rotating shaft 30. In the natural state, the spring barrel 16 and the lever 18 are adjusted to a vertical straight line, the hinge point at the second rotating shaft 29 is a movable hinge point, and the hinge point at the third rotating shaft 30 is a fixed hinge point. The transmission rod 14 is connected to the second rotating shaft 29 through the chain 20. The reversing fork moves the reversing valve with the hinge point at the third rotating shaft 30 as the axis under the action of the transmission rod 14. The fork of the fixed frame 17 is tilted to avoid interference with the movement of the reversing fork.

[0024] Furthermore, the spring barrel 16 includes a spring and a barrel sleeved outside the spring, and a limit frame 21 is provided outside the spring barrel to keep a distance from the spring barrel, and the limit frame 21 is connected to the fixing frame 17. The spring extends out of the barrel, and the barrel can ensure that the spring barrel 16 tilts along a straight line, and the internal spring can ensure that the spring barrel 16 tilts and can restore to its original state by itself. The limit frame 21 can ensure that the reversing fork deflects within a certain angle to avoid excessive deflection and damage to the reversing fork or the reversing valve handle.

[0025] Furthermore, the oil cylinder is provided with a third liquid inlet 22 and a fourth liquid inlet 23 connected to the inner chamber, the third liquid inlet 22 is connected to the first medium pipeline 24, and the fourth liquid inlet 23 is connected to the second medium pipeline 25; the new medium storage tank 2 is provided with a tank inlet pipeline 32 and a tank outlet pipeline 33, the first medium pipeline 24 is connected to the tank outlet pipeline 33 and the new medium delivery pipeline 31 through a branch pipeline 34, the second medium pipeline 25 is connected to the tank outlet pipeline 33 and the new medium delivery pipeline 31 through a branch pipeline 34, a one-way valve 26 is respectively provided on each branch pipeline, and the third liquid inlet 22 and the fourth liquid inlet 23 are arranged on both sides of the spacing guide sleeve 8.

[0026] by Figure 1 Taking the direction as an example, the one-piece oil cylinder of the device realizes the medium conversion function and can shorten the length of the oil cylinder. The liquid supply source with a certain pressure supplies liquid to the one-piece oil cylinder through the reversing valve 13, and the piston of the oil cylinder moves left and right. The inner cavity of the two parts filled with new medium can output the new pressurized medium. A transmission rod 14 is connected to the chain 20 at one end of the oil cylinder. The transmission rod is loosened to the right by the chain 20, and the transmission rod pushes the spring cylinder at the second rotating shaft 29. The spring cylinder at the second rotating shaft 29 is to the right, the spring cylinder 16 and the reversing fork 15 are bent to the right, and the reversing fork pushes the reversing valve handle to the left. When the transmission rod reaches a certain position to the left, the chain 20 pulls the spring cylinder to the left, the spring cylinder at the second rotating shaft 29 quickly jumps to the left, the spring cylinder 16 and the reversing fork 15 are bent to the left, and the reversing fork pushes the reversing valve handle to the right. A spring is installed on the reversing valve handle, and the reversing valve handle has only two positions, right or left. Due to the repeated reciprocation of the reversing fork and the transmission rod, the hydraulic cylinder keeps reciprocating and outputs continuously; when the output stops, the cylinder brake stops working.

[0027] The above examples are only the best embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All variations that can be directly derived or associated with the contents disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A hydraulic medium conversion device, characterized in that: It includes a pressure liquid supply box, a new medium storage box and a combined oil cylinder; a piston assembly is slidably connected in the cylinder barrel of the combined oil cylinder, the space formed by the cylinder barrel and the outside of the piston assembly is an outer chamber, and the space formed by the cylinder barrel and the inside of the piston assembly is an inner chamber; the outer chamber is connected to the pressure liquid supply box, and the piston assembly is driven to move in the cylinder barrel through the medium in the outer chamber; the inner chamber is connected to the new medium storage box and the new medium delivery pipeline; the piston assembly includes a piston rod and a sliding sealing body arranged at both ends of the piston rod, and the sliding sealing body is connected to the oil cylinder The inner wall of the cylinder is slidably connected, a sealing ring is arranged between the outer wall of the sliding sealing body and the inner wall of the cylinder barrel, the space enclosed by the outer wall of the piston rod, the inner wall of the cylinder barrel and the sliding sealing body is an inner chamber, a spacing guide sleeve is fixed to the inner wall of the cylinder barrel, the spacing guide sleeve is slidably connected to the outer wall of the piston rod, and the spacing guide sleeve divides the inner chamber into two parts; a first liquid inlet and a second liquid inlet connected to the outer chamber are arranged on the cylinder barrel, the pressure liquid supply box is connected to the first liquid inlet through a first liquid inlet pipe, and the pressure liquid supply box is connected to the second liquid inlet through a second liquid inlet pipe Two liquid inlets, the first liquid inlet and the second liquid inlet are distributed on both sides of the piston assembly, and the piston assembly divides the outer chamber into two parts; the pressure liquid supply box is provided with a reversing valve, and the reversing valve is respectively connected to the first liquid inlet pipe and the second liquid inlet pipe; one end of the piston rod is connected to the transmission rod, the transmission rod extends outside the oil cylinder barrel, and the transmission rod is connected to the reversing device, and the reversing device is driven by the movement of the piston rod to control the reversing valve to perform reversing; the reversing device includes a reversing fork, and the reversing fork is connected to the fixed frame through a spring barrel, and one end of the spring barrel is connected to the fixed frame The fixed frame is hinged, the other end of the spring cylinder is hinged to the lever of the reversing fork, the middle part of the lever is hinged to the fixed frame, and the end of the spring cylinder close to the reversing fork is connected to the transmission rod; the reversing valve is controlled by the reversing valve handle, and the position of the reversing valve handle is controlled by the reversing device; the transmission rod is connected to the spring cylinder through a chain, and the connection points at both ends of the chain are on the same horizontal line; the spring cylinder includes a spring and a cylinder body sleeved on the outside of the spring, and a limit frame with a spacing from the spring cylinder is arranged on the outside of the spring cylinder, and the limit frame is connected to the fixed frame.

2. The hydraulic medium conversion device according to claim 1, characterized in that: The oil cylinder is provided with a third liquid inlet and a fourth liquid inlet connected to the inner chamber, the third liquid inlet is connected to the first medium pipeline, and the fourth liquid inlet is connected to the second medium pipeline; the new medium storage tank is provided with a tank inlet pipeline and a tank outlet pipeline, the first medium pipeline is connected to the tank outlet pipeline and the new medium external delivery pipeline respectively through branch pipelines, the second medium pipeline is connected to the tank outlet pipeline and the new medium external delivery pipeline respectively through branch pipelines, and the third liquid inlet and the fourth liquid inlet are arranged on both sides of the spacing guide sleeve.

3. The hydraulic medium conversion device according to claim 2, characterized in that: A one-way valve is respectively arranged on each branch pipeline.

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