Hydraulic power assisting system based on bilateral piston rod flow distribution
By designing a double-sided piston rod distribution structure in the hydraulic power assist system, increasing the piston stroke and oil cavity volume, the problem of high commutation frequency in the prior art is solved, extending the equipment life and reducing energy consumption and noise.
Patent Information
- Application Number
- CN202420631989.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The existing dual superchargers have less high-pressure oil flow in a single working stroke, resulting in too high commutation frequency, which may cause component fatigue, increase system energy consumption and heat generation, and even cause hydraulic shock and noise.
Design a hydraulic power assist system based on the flow distribution of the double-sided piston rod. By setting a first sending hole and a second sending hole in the cylinder, and opening a first annular groove and a second annular groove on the piston rod, the replacement is carried out in conjunction with the Directional valves and check valves increase piston stroke and oil chamber volume, thereby introducing more ultra-high pressure oil in one reversing stroke and reducing the reversing frequency.
It effectively reduces the commutation frequency, extends the service life of the supercharger, reduces energy consumption and noise, and improves the overall performance of the system.
Smart Images
Figure CN222208470U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of hydraulic components, and in particular relates to a hydraulic booster system based on double-side piston rod flow distribution. Background Art
[0002] In the design of modern hydraulic systems, 32 to 40 MPa is a common high pressure range, especially in some heavy machinery and precision industrial applications. In order to obtain higher hydraulic pressure, a reciprocating intensifier (also called a hydraulic intensifier or pressure amplifier) is a common solution. This type of intensifier uses a small flow of low-pressure oil to drive a large piston to produce high-pressure output, thereby effectively amplifying the pressure of the hydraulic system.
[0003] However, the current twin-supercharger has certain defects in the matching structure of its piston and cylinder, and the high-pressure oil flow it pushes out in a single working stroke is relatively small, resulting in an excessively high switching frequency of the entire supercharger. Frequent switching actions may not only cause increased component fatigue and affect the overall life of the supercharger, but may also increase the system's energy consumption and heat generation, and even cause problems such as hydraulic shock and noise. Utility Model Content
[0004] The utility model aims at the above problems existing in the prior art and proposes a hydraulic boosting system based on double-side piston rod flow distribution, which can reduce the switching frequency and increase the service life.
[0005] The utility model can be realized through the following technical solutions:
[0006] A hydraulic booster system based on double-sided piston rod flow distribution, having a P port, a T port, and an H port, comprising:
[0007] The cylinder body has an oil chamber, wherein the oil chamber has a first signal transmitting hole and a second signal transmitting hole, the P port is connected to the first signal transmitting hole through a first reversing oil pipeline, the T port is connected to the second signal transmitting hole through a second reversing oil pipeline, and the P port is in communication with the oil chamber through a first oil inlet pipeline;
[0008] A reversing valve, wherein the P port is connected to the reversing valve through the first signal-transmitting hole, the T port is connected to the reversing valve through the second signal-transmitting hole, and the reversing valve is connected to the main oil chamber through the second oil inlet pipeline;
[0009] A piston is movably arranged in the oil chamber, and a piston rod of the piston is provided with a first annular groove and a second annular groove along its circumferential surface, wherein:
[0010] When the piston is located at the leftmost end of the oil chamber, the first annular groove is communicated with the first signal-transmitting hole;
[0011] When the piston is located at the rightmost end of the oil chamber, the second annular groove is communicated with the second signal-transmitting hole.
[0012] As a further improvement of the utility model, the oil chamber includes a main oil chamber and a first branch oil chamber and a second branch oil chamber located on both sides of the main oil chamber, the first sending hole is located at one end of the first branch oil chamber close to the main oil chamber, the second sending hole is located at one end of the second branch oil chamber close to the main oil chamber, and the first oil inlet pipeline is connected to the first branch oil chamber and the second branch oil chamber.
[0013] As a further improvement of the present invention, when the piston moves to the point where the first annular groove is connected to the first sending hole, the oil at the first sending hole enters the reversing valve through the first annular groove for reversing, and then the oil at the P port enters the oil chamber through the second oil inlet pipeline and pushes the piston to move, and the piston pushes the ultra-high pressure oil in the second branch oil chamber outward and into the H port, and at the same time, the piston also pushes the oil in the main oil chamber outward and flows into the T port through the oil return pipeline.
[0014] As a further improvement of the utility model, when the piston moves to the second annular groove and is connected to the second sending hole, the oil at the second sending hole enters the reversing valve through the second annular groove for reversing, and then the oil at the P port enters the oil chamber through the second oil inlet pipeline and pushes the piston to move. The piston pushes the ultra-high pressure in the first branch oil chamber outward and into the H port. At the same time, the piston also pushes the oil in the main oil chamber outward and flows into the T port through the return oil pipeline.
[0015] As a further improvement of the present invention, the first signal transmitting hole is located at one end of the first branch oil chamber close to the main oil chamber, and the second signal transmitting hole is located at one end of the second branch oil chamber close to the main oil chamber.
[0016] As a further improvement of the present utility model, the reversing valve has a P1 chamber and a P2 chamber, and the area of the P1 chamber is smaller than the area of the P2 chamber.
[0017] As a further improvement of the present invention, when the piston is located at the leftmost end of the cylinder body, the first annular groove transmits the high-pressure signal at the first signal transmitting hole to the P2 chamber, and the pressure of the P2 chamber is greater than the pressure of the P1 chamber, causing the piston to move right.
[0018] As a further improvement of the present invention, when the piston is located at the rightmost end of the cylinder body, the second annular groove transmits a low-pressure signal to the P2 chamber, and the pressure of the P1 chamber is greater than the pressure of the P2 chamber, causing the piston to move to the left.
[0019] As a further improvement of the utility model, during the process of the piston moving back and forth between the leftmost end and the rightmost end of the oil chamber, the first signal sending hole and the second signal sending hole are both in a blocked state and maintain pressure on both sides of the reversing valve, and the piston remains in a moving state.
[0020] As a further improvement of the present invention, one-way valves are provided on the pipeline between the rod body and the H port, and on the pipelines between the P port and the first oil chamber and the second oil chamber.
[0021] Compared with the prior art, the utility model has the following beneficial effects:
[0022] 1. The first and second signal-transmitting holes are matched with the first and second annular grooves to increase the stroke of the piston and greatly increase the volume of the oil chamber. When the cylinder size remains unchanged, the piston stroke can be increased by 120%. As a result, the piston can push out more ultra-high-pressure oil in one reversing stroke, thereby greatly reducing the reversing frequency and increasing the service life of the entire supercharger.
[0023] 2. The first sending hole is located at one end of the first branch oil chamber close to the main oil chamber, and the second sending hole is located at one end of the second branch oil chamber close to the main oil chamber. The setting of the first annular groove and the second annular groove of the piston is combined to achieve the purpose of expanding the volume of the oil chamber and allowing the piston to push out more ultra-high pressure oil in one stroke, thereby reducing the switching frequency. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 This is a schematic diagram of the hydraulic system of the utility model when the piston is located at the leftmost end;
[0025] Figure 2 It is a schematic diagram of the hydraulic system of the utility model when the piston moves to the right;
[0026] Figure 3 This is a schematic diagram of the hydraulic system of the utility model when the piston is located at the rightmost end;
[0027] Figure 4 It is a principle diagram of the hydraulic system of the utility model when the piston moves to the left.
[0028] In the figure, 100, cylinder body; 110, first transmitting hole; 120, second transmitting hole; 130, first reversing oil pipeline; 131, second reversing oil pipeline; 140, first oil inlet pipeline; 150, reversing valve; 151, second oil inlet pipeline; 160, piston; 161, first annular groove; 162, second annular groove; 170, main oil chamber; 171, first branch oil chamber; 172, second branch oil chamber; 180, oil return pipeline; 190, one-way valve. DETAILED DESCRIPTION
[0029] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical method of the present invention, but the present invention is not limited to these embodiments.
[0030] like Figure 1-4 As shown, the utility model provides a hydraulic booster system based on double-sided piston rod flow distribution, with P port, T port, and H port, the P port is a hydraulic pump and is used to provide high-pressure oil to input a high-pressure signal, the T port is an oil tank and is used to collect return oil to input a low-pressure signal, and the H port is an outlet for the ultra-high-pressure oil generated by the system, including:
[0031] The cylinder body 100 has an oil chamber, and the oil chamber has a first transmitting hole 110 and a second transmitting hole 120. The first transmitting hole 110 and the second transmitting hole 120 both penetrate the side wall of the cylinder body 100. The P port is connected to the first transmitting hole 110 through a first reversing oil pipeline 130, and the T port is connected to the second transmitting hole 120 through a second reversing oil pipeline 131. In addition, the P port is also connected to the oil chamber of the cylinder body 100 through a first oil inlet pipeline 140;
[0032] The reversing valve 150, the P port is connected to the reversing valve 150 through the first signal-transmitting hole 110, the T port is connected to the reversing valve 150 through the second signal-transmitting hole 120, and the reversing valve 150 is connected to the oil chamber through the second oil inlet pipeline 151. A part of the oil flowing into the P port is directly injected into the oil chamber through the first oil inlet pipeline 140, and the other part is injected into the oil chamber along the second oil inlet pipeline 151 after passing through the reversing valve 150;
[0033] The piston 160 is movably disposed in the oil chamber. The piston rods on both sides of the piston 160 are respectively provided with a first annular groove 161 and a second annular groove 162 along their circumferential surfaces.
[0034] When the piston 160 is located at the leftmost end of the oil chamber, the first annular groove 161 is connected to the first transmitting hole 110. At this time, the oil entering the first transmitting hole 110 from the P port can flow into the reversing valve 150 through the first annular grooves 161 on the piston rod surfaces on both sides of the piston 160 and push the reversing valve 150 to switch. After the reversing valve 150 switches, the oil flowing into the oil chamber from the P port through the reversing valve 150 can push the piston 160 to move rightward, and the piston 160 pushes the ultra-high pressure oil in the oil chamber outward from the right end of the cylinder body 100 and sends it to the H port.
[0035] Similarly, when the piston 160 is located at the rightmost end of the oil chamber, the second annular groove 162 is connected to the second transmitting hole 120, and the T port is connected to the P2 chamber of the reversing valve 150 through the second transmitting hole 120, so that the P2 chamber is low-pressure. Although the area of the P1 chamber is smaller than that of the P2 chamber, the P1 chamber is connected to the high-pressure signal of the P port, so the reversing valve 150 is switched and placed in the left position. Subsequently, the oil flowing into the oil chamber from the P port through the reversing valve 150 pushes the piston 160 to the left, and the piston 160 pushes the ultra-high-pressure oil in the oil chamber outward from the left end of the cylinder body 100 and sends it to the H port.
[0036] It should be noted here that the reversing of the cylinder body 100 can only be achieved when the first annular groove 161 is connected to the first transmitting hole 110, or the second annular groove 162 is connected to the second transmitting hole 120. In the present embodiment, the position coordination of the first transmitting hole 110, the second transmitting hole 120 and the first annular groove 161, the second annular groove 162 shortens the stroke of the piston 160 required for realizing the reversing function, and greatly increases the volume of the oil chamber. When the cylinder body size remains unchanged, the piston stroke can be increased by 120%. As a result, the piston 160 can push out more ultra-high-pressure oil within one reversing stroke, thereby greatly reducing the reversing frequency and improving the service life of the entire supercharger.
[0037] Preferably, the oil chamber includes a main oil chamber 170 and a first branch oil chamber 171 and a second branch oil chamber 172 located on both sides of the main oil chamber 170, the first sending hole 110 is located at one end of the first branch oil chamber 171 close to the main oil chamber 170, the second sending hole 120 is located at one end of the second branch oil chamber 172 close to the main oil chamber 170, and the P port is connected to the first branch oil chamber 171 and the second branch oil chamber 172 through the first oil inlet pipeline 140.
[0038] Preferably, the reversing valve 150 has a P1 chamber and a P2 chamber, and the area of the P1 chamber is smaller than the area of the P2 chamber.
[0039] Specifically, when the piston 160 is located at the leftmost end of the oil chamber, the first annular groove 161 is connected to the first transmitting hole 110. At this time, the first annular groove 161 transmits the high-pressure signal at the first transmitting hole 110 to the P2 chamber. Although the P1 chamber is connected to the high-pressure signal of the P port, since the area of the P2 chamber is larger than that of the P1 chamber, the pressure of the P2 chamber is greater, causing the reversing valve 150 to be reversed and placed in the right position. Subsequently, the oil at the P port enters the oil chamber through the second oil inlet line 151 and pushes the piston 160 to move. The piston 160 pushes the ultra-high-pressure oil in the second branch oil chamber 172 outward and into the H port. At the same time, the piston 160 also pushes the oil in the main oil chamber 170 outward and flows into the T port through the return oil line 180 until the piston 160 moves to the rightmost end of the oil chamber.
[0040] When the piston 160 moves to the rightmost end of the oil chamber, the second annular groove 162 of the piston 160 is connected to the second signal-transmitting hole 120, and the high-pressure oil in the P2 chamber of the reversing valve 150 flows back to the T port of the oil tank through the second annular groove 162 and the second signal-transmitting hole 120 and becomes a low-pressure signal. Although the area of the P1 chamber is smaller than that of the P2 chamber, the P1 chamber is connected to the high-pressure signal of the P port, so the reversing valve 150 is reversed and placed in the left position. Subsequently, the oil at the P port enters the oil chamber through the first oil inlet line 140 and pushes the piston 160 to move. The piston 160 pushes the ultra-high pressure in the first branch oil chamber 171 outward and into the H port. At the same time, the piston 160 also pushes out the oil in the main oil chamber 170 and flows into the T port through the return oil line 180 until the piston 160 moves to the leftmost end of the oil chamber, thereby performing a reciprocating cycle.
[0041] Preferably, the first sending hole 110 is located at one end of the first branch oil chamber 171 close to the main oil chamber 170, and the second sending hole 120 is located at one end of the second branch oil chamber 172 close to the main oil chamber 170. At the same time, the positions of the first annular groove 161 and the second annular groove 162 are respectively matched with the first sending hole 110 and the second sending hole 120, so that when the piston 160 is located at the leftmost end and the rightmost end, the first sending hole 110 and the second sending hole 120 are connected with the first annular groove 161 and the second annular groove 162 respectively, thereby expanding the volume of the oil chamber, and the piston 160 can push out more ultra-high pressure oil in one stroke, thereby reducing the switching frequency.
[0042] Preferably, when the piston 160 moves back and forth between the leftmost end and the rightmost end of the oil chamber, the first transmitting hole 110 and the second transmitting hole 120 are both in a blocked state, so that pressure is maintained on both sides of the reversing valve 150, and the piston 160 maintains the moving state at this time.
[0043] Preferably, a one-way valve 190 is provided on the pipeline between the cylinder body 100 and the H port, and on the pipeline between the P port and the first branch oil chamber 171 and the second branch oil chamber 172 .
[0044] The technical means disclosed in the scheme of the utility model are not limited to the technical means disclosed by the above technical means, but also include technical solutions composed of any combination of the above technical features. The above is a specific implementation method of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.
[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0046] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0047] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0048] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
Claims
1. A hydraulic booster system based on double-sided piston rod flow distribution, having a P port, a T port, and an H port, characterized in that: include: The cylinder body has an oil chamber, wherein the oil chamber has a first signal transmitting hole and a second signal transmitting hole, the P port is connected to the first signal transmitting hole through a first reversing oil pipeline, the T port is connected to the second signal transmitting hole through a second reversing oil pipeline, and the P port is in communication with the oil chamber through a first oil inlet pipeline; A reversing valve, wherein the P port is connected to the reversing valve through the first signal-transmitting hole, the T port is connected to the reversing valve through the second signal-transmitting hole, and the reversing valve is connected to the oil chamber through a second oil inlet pipeline; A piston is movably arranged in the oil chamber, and a piston rod of the piston is provided with a first annular groove and a second annular groove along its circumferential surface, wherein: When the piston is located at the leftmost end of the oil chamber, the first annular groove is communicated with the first signal-transmitting hole; When the piston is located at the rightmost end of the oil chamber, the second annular groove is communicated with the second signal-transmitting hole.
2. A hydraulic booster system based on double-sided piston rod flow distribution according to claim 1, characterized in that: The oil chamber includes a main oil chamber and a first branch oil chamber and a second branch oil chamber located on both sides of the main oil chamber. The first sending hole is located at one end of the first branch oil chamber close to the main oil chamber, and the second sending hole is located at one end of the second branch oil chamber close to the main oil chamber. The first oil inlet pipeline is connected to the first branch oil chamber and the second branch oil chamber.
3. A hydraulic booster system based on double-sided piston rod flow distribution according to claim 2, characterized in that: When the piston moves to the point where the first annular groove is connected to the first transmitting hole, the oil at the first transmitting hole enters the reversing valve through the first annular groove for reversing, and then the oil at the P port enters the oil chamber through the second oil inlet pipeline and pushes the piston to move. The piston pushes the ultra-high pressure oil in the second branch oil chamber outward and into the H port. At the same time, the piston also pushes the oil in the main oil chamber outward and flows into the T port through the oil return pipeline.
4. A hydraulic booster system based on double-sided piston rod flow distribution according to claim 2, characterized in that: When the piston moves to the second annular groove and is connected to the second sending hole, the oil at the second sending hole enters the reversing valve through the second annular groove for reversing, and then the oil at the P port enters the oil chamber through the second oil inlet pipeline and pushes the piston to move. The piston pushes the ultra-high pressure oil in the first branch oil chamber outward and into the H port. At the same time, the piston also pushes the oil in the main oil chamber outward and flows into the T port through the oil return pipeline.
5. A hydraulic booster system based on double-sided piston rod flow distribution according to claim 2, characterized in that: The first signal transmitting hole is located at one end of the first branch oil chamber close to the main oil chamber, and the second signal transmitting hole is located at one end of the second branch oil chamber close to the main oil chamber.
6. A hydraulic booster system based on double-sided piston rod flow distribution according to claim 5, characterized in that: The reversing valve has a P1 chamber and a P2 chamber, and the area of the P1 chamber is smaller than the area of the P2 chamber.
7. A hydraulic booster system based on double-sided piston rod flow distribution according to claim 6, characterized in that: When the piston is located at the leftmost end of the cylinder body, the first annular groove transmits the high-pressure signal at the first signal transmitting hole to the P2 chamber. The pressure of the P2 chamber is greater than the pressure of the P1 chamber, causing the piston to move rightward.
8. The hydraulic booster system based on double-sided piston rod flow distribution according to claim 6, characterized in that: When the piston is located at the rightmost end of the cylinder body, the second annular groove transmits a low-pressure signal to the P2 chamber, and the pressure of the P1 chamber is greater than the pressure of the P2 chamber, causing the piston to move leftward.
9. The hydraulic booster system based on double-sided piston rod flow distribution according to claim 1, characterized in that: During the process of the piston moving back and forth between the leftmost end and the rightmost end of the oil chamber, the first signal-transmitting hole and the second signal-transmitting hole are both in a blocked state and the pressure is maintained on both sides of the reversing valve, and the piston remains in a moving state.
10. The hydraulic booster system based on double-sided piston rod flow distribution according to claim 2, characterized in that: One-way valves are provided on the pipeline between the cylinder body and the H port, and on the pipelines between the P port and the first branch oil chamber and the second branch oil chamber.