CN114151393A - Supercharger structure - Google Patents
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- CN114151393A CN114151393A CN202111489578.4A CN202111489578A CN114151393A CN 114151393 A CN114151393 A CN 114151393A CN 202111489578 A CN202111489578 A CN 202111489578A CN 114151393 A CN114151393 A CN 114151393A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
Abstract
The invention provides a supercharger structure, which comprises a cylinder body and a piston structure arranged in the cylinder body, wherein the piston structure comprises a piston rod, a first piston and a second piston, the first piston and the second piston are respectively arranged at two ends of the piston rod, and the first piston and the second piston are both suitable for being in sliding connection with the inner side wall of the cylinder body; the protruding structure that is suitable for the cover to establish on the piston rod and with piston rod sliding connection is equipped with to the inside wall epirelief of cylinder body, first piston, protruding structure and second piston are separated the cylinder body inside in proper order for first chamber in cylinder body axis direction, the second chamber, third chamber and fourth chamber, and be equipped with on the cylinder body and be suitable for respectively with first chamber, the second chamber, the first hydraulic fluid port that third chamber and fourth chamber correspond, the second hydraulic fluid port, third hydraulic fluid port and fourth hydraulic fluid port, first chamber, the second chamber, third chamber and fourth chamber are respectively through first hydraulic fluid port, the second hydraulic fluid port, the input of third hydraulic fluid port and fourth hydraulic fluid port or discharge hydraulic oil. The supercharger structure provided by the invention enriches the supercharging mode of the supercharger structure by arranging the oil cavities and the oil ports.
Description
Technical Field
The invention relates to the technical field of hydraulic equipment, in particular to a supercharger structure.
Background
In a hydraulic system of a hydraulic device such as a large-tonnage hydraulic press, for example, a size specification, cost, and the like of a hydraulic actuator are generally reduced by providing a supercharger structure. But the design that the pressure boost ratio is fixed is generally adopted to current booster structure, and the oil feed is single with the form of producing oil for the pressure boost mode of booster structure is single, is difficult to satisfy the different hydraulic system of the high pressure of requirement, has reduced the suitability of booster structure.
Disclosure of Invention
The invention solves the problems that: how to enrich the pressure boost mode of booster structure, promote the suitability of booster structure.
In order to solve the above problems, the present invention provides a supercharger structure, including a cylinder and a piston structure disposed in the cylinder, where the piston structure includes a piston rod and a first piston and a second piston respectively disposed at two ends of the piston rod, and both the first piston and the second piston are adapted to be slidably connected to an inner side wall of the cylinder; the utility model discloses a hydraulic cylinder, including cylinder body, piston rod, cylinder body, the inside wall epirelief of cylinder body is equipped with and is suitable for the cover to establish on the piston rod and with piston rod sliding connection's protruding structure, first piston protruding structure with the second piston will on the cylinder body axis direction the cylinder body is inside to be separated in proper order for first chamber, second chamber, third chamber and fourth chamber, just be equipped with on the cylinder body be suitable for respectively with first chamber the second chamber the third chamber with first hydraulic fluid port, second hydraulic fluid port, third hydraulic fluid port and the fourth hydraulic fluid port that the fourth chamber corresponds, first chamber the second chamber the third chamber with the fourth chamber passes through respectively first hydraulic fluid port the second hydraulic fluid port the third hydraulic fluid port with the fourth hydraulic fluid port inputs or discharges the hydraulic oil.
Optionally, the cylinder body comprises a cylinder barrel with openings at two ends, and a first cylinder cover and a second cylinder cover which are respectively arranged at two ends of the cylinder barrel, and the first cylinder cover and the second cylinder cover are both detachably connected with the cylinder barrel; the protruding structure is suitable for being arranged on the inner side wall of the cylinder barrel.
Optionally, the first oil port is adapted to be disposed on at least one of the first cylinder head and the cylinder barrel and is in communication with the first chamber; the fourth oil port is suitable for being arranged on at least one of the second cylinder cover and the cylinder barrel and is communicated with the fourth cavity; the second oil port and the third oil port are suitable for being arranged on the cylinder barrel and are respectively communicated with the second cavity and the third cavity.
Optionally, one of the first piston and the second piston is integrally formed with the piston rod, and the other of the first piston and the second piston is detachably connected to the piston rod.
Optionally, the piston structure further comprises a fastening nut, the piston rod comprises a piston rod body and a connecting part arranged at one end of the piston rod body far away from the first piston, and the diameter of the connecting part is smaller than that of the piston rod body; the second piston is suitable for being sleeved on the connecting portion and is located between the piston rod body and the fastening nut so as to be locked through the fastening nut.
Optionally, the second cylinder cover with fastening nut corresponds the setting, just be equipped with on the second cylinder cover be suitable for with connecting portion with fastening nut plug-in fit's holding tank.
Optionally, the supercharger structure further comprises a first sealing structure, and the first sealing structure is suitable for being arranged at a sliding connection position of the first piston and the inner side wall of the cylinder, a sliding connection position of the second piston and the inner side wall of the cylinder, and a sliding connection position of the protrusion structure and the piston rod.
Optionally, annular first grooves are formed in the side walls of the first piston and the second piston and in the inner side wall of the protruding structure, and the first sealing structure is suitable for being arranged in the first grooves.
Optionally, the supercharger structure further comprises a second sealing structure, and the second sealing structure is suitable for being arranged at a joint of the first cylinder cover and the cylinder barrel and a joint of the second cylinder cover and the cylinder barrel.
Optionally, the supercharger structure further comprises a third sealing structure, and the third sealing structure is suitable for being arranged at the joint of the second piston and the piston rod body and/or the joint of the second piston and the connecting part.
Compared with the prior art, the invention has the following beneficial effects: the supercharger structure is suitable for oil supply and oil discharge of multiple oil cavities by arranging multiple oil cavities (namely a first cavity, a second cavity, a third cavity and a fourth cavity) and multiple corresponding oil ports (namely a first oil port, a second oil port, a third oil port and a fourth oil port), so that the supercharger structure can discharge larger flow compared with the supercharger structure in the prior art under the condition of the same supercharging ratio, the size specification can be smaller, and the manufacturing cost and the occupied space of the supercharger structure are reduced; and through the combination of different oil cavities, the supercharger structure can realize multiple supercharging ratios, the supercharging mode of the supercharger structure is enriched, and the application range of the supercharger structure is widened. Moreover, under the same pipeline condition, the switching between the supercharging function and the decompression function of the supercharger structure can be realized by changing the flowing direction of the hydraulic oil, so that the supercharging form of the supercharger structure is more flexible.
Drawings
FIG. 1 is a schematic structural diagram of a supercharger according to an embodiment of the present invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Description of reference numerals:
1-cylinder body, 11-convex structure, 12-cylinder barrel, 13-first cylinder cover, 14-second cylinder cover and 141-accommodating groove; 2-piston structure, 21-first piston, 22-second piston, 23-piston rod, 231-piston rod body, 232-connecting part, 24-fastening nut; 31-first chamber, 32-second chamber, 33-third chamber, 34-fourth chamber; 41-a first oil port, 42-a second oil port, 43-a third oil port, 44-a fourth oil port; 5-a first sealing structure; 6-a first groove; 7-a second sealing structure; 8-third seal configuration.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Referring to fig. 1, an embodiment of the present invention provides a supercharger structure, including a cylinder 1 and a piston structure 2 disposed in the cylinder 1, where the piston structure 2 includes a piston rod 23 and a first piston 21 and a second piston 22 respectively disposed at two ends of the piston rod 23, and both the first piston 21 and the second piston 22 are adapted to be slidably connected to an inner side wall of the cylinder 1; the inner side wall of the cylinder body 1 is convexly provided with a protruding structure 11 which is suitable for being sleeved on the piston rod 23 and is in sliding connection with the piston rod 23, the first piston 21, the protruding structure 11 and the second piston 22 sequentially divide the inside of the cylinder body 1 into a first cavity 31, a second cavity 32, a third cavity 33 and a fourth cavity 34 in the axial direction of the cylinder body 1, the cylinder body 1 is provided with a first oil port 41, a second oil port 42, a third oil port 43 and a fourth oil port 44 which are suitable for respectively corresponding to the first cavity 31, the second cavity 32, the third cavity 33 and the fourth cavity 34, and the first cavity 31, the second cavity 32, the third cavity 33 and the fourth cavity 34 respectively input or discharge hydraulic oil through the first oil port 41, the second oil port 42, the third oil port 43 and the fourth oil port 44.
In the present embodiment, the supercharger structure is applied to hydraulic equipment such as an oil press and an extruder. The supercharger structure includes a cylinder block 1 having a cavity (in a cylindrical shape) and a piston structure 2 disposed in the cavity of the cylinder block 1, and the piston structure 2 is adapted to reciprocate in an axial direction of the cylinder block 1. Specifically, the piston structure 2 includes a piston rod 23 and a first piston 21 and a second piston 22 respectively disposed at two ends of the piston rod 23, the first piston 21 and the second piston 22 are preferably cylindrical, and the piston rod 23 is disposed coaxially with the cylinder 1, so as to ensure that the first piston 21 and the second piston 22 of the piston structure 2 are uniformly stressed, and ensure that the piston structure 2 moves smoothly in the cylinder 1. An annular protruding structure 11 is convexly arranged on the inner side wall of the cylinder body 1, the piston rod 23 is arranged through an area surrounded by the protruding structure 11 (namely, the protruding structure 11 is sleeved on the piston rod 2), and the first piston 21 and the second piston 22 are respectively positioned at two ends of the protruding structure 11 in the axial direction of the cylinder body 1; and the piston rod 23 is adapted to slide in the axial direction of the cylinder body 1 relative to the boss structure 11 to realize the movement of the piston structure 2 in the cylinder body 1, thereby realizing the pressurizing function or the depressurizing function of the supercharger structure (i.e. the supercharger structure inputs low-pressure oil and discharges high-pressure oil, or inputs high-pressure oil and discharges low-pressure oil). In the axial direction of the cylinder 1, the first piston 21, the bulge structure 11 and the second piston 22 divide the cavity inside the cylinder 1 into a first cavity 31, a second cavity 32, a third cavity 33 and a fourth cavity 34 in sequence, that is, the first cavity 31 and the fourth cavity 34 are respectively located at one end of the first piston 21 away from the bulge structure 11 and one end of the second piston 22 away from the bulge structure 11, the second cavity 32 and the third cavity 33 are respectively located at one end of the first piston 21 towards the bulge structure 11 and one end of the second piston 22 towards the bulge structure 11, and the first cavity 31, the second cavity 32, the third cavity 33 and the fourth cavity 34 are isolated from each other. The cylinder body 1 is provided with a first oil port 41 suitable for communicating the first cavity 31 with the outside of the cylinder body 1, a second oil port 42 suitable for communicating the second cavity 32 with the outside of the cylinder body 1, a third oil port 43 suitable for communicating the third cavity 33 with the outside of the cylinder body 1, and a fourth oil port 44 suitable for communicating the fourth cavity 34 with the outside of the cylinder body 1, wherein the first cavity 31, the second cavity 32, the third cavity 33 and the fourth cavity 34 are respectively connected with a pipeline through the first oil port 41, the second oil port 42, the third oil port 43 and the fourth oil port 44 to input or discharge hydraulic oil, so that the supercharger structure plays a role in changing the pressure of the discharged hydraulic oil. Thus, the supercharger structure is used as a double-acting supercharger, high-pressure oil can be continuously discharged from the hydraulic actuating mechanism through the reciprocating motion of the piston structure 2 and the matching of corresponding parts (such as a pipeline and a reversing valve), and the supercharger structure is suitable for occasions with long supercharging stroke requirements. The supercharger structure is suitable for oil supply and oil discharge of multiple oil chambers by arranging multiple oil chambers (namely the first chamber 31, the second chamber 32, the third chamber 33 and the fourth chamber 34) and multiple corresponding oil ports (namely the first oil port 41, the second oil port 42, the third oil port 43 and the fourth oil port 44), so that under the condition of the same supercharging ratio, the supercharger structure in the embodiment can discharge larger flow compared with the supercharger structure in the prior art, the size specification can be smaller, and the manufacturing cost and the occupied space of the supercharger structure are reduced; and through the combination of different oil cavities, the supercharger structure can realize multiple supercharging ratios, the supercharging mode of the supercharger structure is enriched, and the application range of the supercharger structure is widened. Moreover, under the same pipeline condition, the switching between the supercharging function and the decompression function of the supercharger structure can be realized by changing the flowing direction of the hydraulic oil, so that the supercharging form of the supercharger structure is more flexible.
The booster structure is further described below in terms of varying the boost ratio of the booster structure by employing a combination of different oil chambers. The diameter of the piston rod 23 is denoted as D, and the diameter of the cavity inside the cylinder 1 (which is also the diameter of the first piston 21 and the second piston 22) is denoted as D. When the first port 41 (the first chamber 31) and the third port 43 (the third chamber 33) are filled with low pressure oil, the fourth port 44 (the fourth chamber 34) is filled with high pressure oil, and the second port 42 (the second chamber 32) is connected with the oil tank, the pressure of the first chamber 31 and the third chamber 33 is defined as P1The fourth chamber 34 has a pressure P2 Second chamber 32 is at a pressure P3(since the second chamber 32 is connected back to the tank, the pressure is very low and can be approximated by P30); during the movement of the piston structure 2 towards the fourth chamber 34, the force applied by the piston structure 2 is equal to the pressure multiplied by the area, and the hydraulic oil in the first chamber 31 and the third chamber 33 gives the piston structure 2 a force towards the fourth chamber 34:
the force that the fourth chamber 34 gives to the piston structure 2 towards the first chamber 31 is:
since the force applied to the piston structure 2 of the supercharger is balanced during the movement, therefore:
the pressure increasing ratio i of the pressure increasing device structure can be obtained at the moment1Comprises the following steps:
similarly, when the fourth port 44 and the second port 42 are filled with low-pressure oil, the first port 41 is filled with high-pressure oil, and the third port 43 is connected with the oil tank, the pressure increase ratio i of the pressure increase structure is2Comprises the following steps:
when the fourth port 44 and the second port 42 are filled with low pressure oil, the third port 43 is filled with high pressure oil, and the first port 41 is connected with the oil tank, the pressure increasing ratio i of the pressure increasing structure at this time3Comprises the following steps:
when the first port 41 and the third port 43 are filled with low pressure oil, the second port 42 is filled with high pressure oil, and the fourth port 44 is connected with the oil tank, the pressure increasing ratio i of the pressure increasing structure is at the moment4Comprises the following steps:
when the first port 41 is filled with low pressure oil, the second port 42 is filled with high pressure oil, and the fourth port 44 and the third port 43 are connected with the oil tank, the pressure increasing ratio i of the pressure increasing structure is at the moment5Comprises the following steps:
when the fourth port 44 feeds low pressure oil, the third port 43 discharges high pressure oil, and the second port 42 and the first port 41 are connected with the oil tank, the pressure increasing ratio i of the pressure increasing structure is at the moment6Comprises the following steps:
wherein i1、i2Are all less than 2, i3、i4Are all larger than 2; therefore, through the combination of different oil cavities, the supercharger structure can realize multiple supercharging ratios, and the supercharger structure is enrichedThe application range of the supercharger structure is widened by the aid of a supercharging mode. Moreover, under the same pipeline condition (namely, the pipeline is not changed), the reciprocating motion of the supercharger can be realized by changing the flow direction of the hydraulic oil (the high-low pressure oil ports are exchanged to enable the hydraulic oil to flow reversely), and the switching between the supercharging function and the decompression function of the supercharger structure can be realized; for example, when the low-pressure oil is fed into the first oil port 41 (the first cavity 31) and the third oil port 43 (the third cavity 33), the high-pressure oil is discharged from the fourth oil port 44 (the fourth cavity 34), and the oil tank is connected to the second oil port 42 (the second cavity 32), when the piston structure 2 moves to the limit position toward the fourth cavity 34, the low-pressure oil is fed into the fourth oil port 44 and the second oil port 42 by switching the corresponding reversing valves, the high-pressure oil is discharged from the first oil port 41, and the oil tank is connected to the third oil port 43, so that the pressure increasing ratio is kept unchanged, the reciprocating motion of the piston structure 2 is realized, the continuous reciprocating motion of the pressure increasing device is further realized, and the pressure increasing device at this time can serve as a pressure reducing device with a pressure reducing function.
Optionally, a plurality of the convex structures 11 are arranged, and the plurality of the convex structures 11 are arranged at intervals along the axial direction of the cylinder body 1 and divide the interior of the cylinder body 1 into a plurality of cavities; and a first piston 21 or a second piston 22 is provided in each cavity.
In this embodiment, two or more than two protruding structures 11 may also be provided, and the cavity inside the cylinder 1 is divided into a plurality of cavities by the plurality of protruding structures 11. Correspondingly, the first piston 21 and the second piston 22 are also provided with a plurality of pistons, and at least one first piston 21 or at least one second piston 22 is arranged in each cavity, so that oil cavities of the supercharger structure are further enriched, more supercharging ratios can be realized by the supercharger structure, and supercharging modes of the supercharger structure are further enriched. For example, when there are two projection structures 11, the two projection structures 11 spaced apart from each other in the axial direction of the cylinder 1 divide the cavity inside the cylinder 1 into three chambers, and each of the three chambers is provided with one first piston 21 or one second piston 22. Thus, the two protruding structures 11 and the pistons (the first piston 21 or the second piston 22) in the three cavities divide the cavity inside the cylinder body 1 into six oil cavities, so that the oil cavities of the supercharger structure are further enriched, the supercharger structure can realize more supercharging ratios, and the supercharging mode of the supercharger structure is further enriched.
Optionally, as shown in fig. 1, the cylinder block 1 includes a cylinder barrel 12 with openings at two ends, and a first cylinder head 13 and a second cylinder head 14 respectively disposed at two ends of the cylinder barrel 12, and both the first cylinder head 13 and the second cylinder head 14 are detachably connected to the cylinder barrel 12; the projection 11 is adapted to be arranged on the inner side wall of the cylinder 12.
In this embodiment, the cylinder body 1 includes a cylinder barrel 12, a first cylinder cover 13 and a second cylinder cover 14, the protruding structure 11 is disposed on the inner side wall of the cylinder barrel 12, and openings are disposed at two ends of the cylinder barrel 12 in the axial direction, so as to facilitate the assembly of the piston structure 2 in the cylinder barrel 12. First cylinder cap 13 and second cylinder cap 14 set up the opening part in cylinder 12 both ends respectively to can dismantle with cylinder 12 through the fastener and be connected, with the convenience that promotes the installation of cylinder 1 overall structure and dismantlement, reduce the manufacturing degree of difficulty of cylinder 1.
Alternatively, as shown in connection with fig. 1, the first oil port 41 is adapted to be provided on at least one of the first cylinder head 13 and the cylinder tube 12, and is communicated with the first chamber 31; the fourth port 44 is adapted to be disposed in at least one of the second cylinder head 14 and the cylinder tube 12 and is in communication with the fourth chamber 34; the second oil port 42 and the third oil port 43 are both adapted to be disposed on the cylinder tube 12 and are respectively communicated with the second chamber 32 and the third chamber 33.
In this embodiment, the first head 13 is arranged at the first chamber 31 and the second head 14 is arranged at the fourth chamber 34. The first piston 21 has two extreme positions, one extreme position being the position in which the first piston 21 moves to an extreme towards the first cylinder head 13 and the other extreme position being the position in which the first piston 21 moves to an extreme towards the second cylinder head 14. The second piston 22 has two extreme positions, one being the position at which the second piston 22 moves to the extreme towards the first cylinder head 13 (corresponding to the extreme position at which the first piston 21 moves to the extreme towards the first cylinder head 13), and the other being the position at which the second piston 22 moves to the extreme towards the second cylinder head 14 (corresponding to the extreme position at which the first piston 21 moves to the extreme towards the second cylinder head 14). The limit positions of the first piston 21 and the second piston 22 can be defined by the first cylinder head 13, the second cylinder head 14 or the protruding structure 11, that is, the stroke of the first piston 21 and the second piston 22 in the cylinder 1 is limited by the first cylinder head 13, the second cylinder head 14 or the protruding structure 11 to determine the limit positions of the first piston 21 and the second piston 22.
The first oil ports 41 may be disposed on the first cylinder head 13, the cylinder tube 12, or both the first cylinder head 13 and the cylinder tube 12 (i.e., when there are a plurality of first oil ports 41, a part is disposed on the first cylinder head 13, and another part is disposed on the cylinder tube 12); and the first oil port 41 is communicated with the first chamber 31 for supplying oil to or discharging oil from the first chamber 31; moreover, the specific location of the first oil port 41 is set according to the limit position of the first piston 21, so as to ensure that the first piston 21 can supply oil or discharge oil through the first oil port 41 once during the movement towards the limit position. Similarly, the fourth oil port 44 may be disposed on the second cylinder head 14, the cylinder tube 12, or both the second cylinder head 14 and the cylinder tube 12 (i.e., when a plurality of fourth oil ports 44 are provided, a part of the fourth oil ports are disposed on the second cylinder head 14, and another part of the fourth oil ports are disposed on the cylinder tube 12); and the fourth oil port 44 is communicated with the fourth chamber 34 for supplying oil to or discharging oil from the fourth chamber 34; moreover, the specific location of the fourth oil port 44 is set according to the limit position of the second piston 22, so as to ensure that oil can be supplied or discharged through the fourth oil port 44 all the time during the movement of the second piston 22 toward the limit position thereof.
The second oil port 42 is arranged on the cylinder 12 and communicated with the second cavity 32 to supply oil or discharge oil to the second cavity 32; the second oil port 42 may directly penetrate through the cylinder 12 to communicate with the second chamber 32, or may successively penetrate through the cylinder 12 and the protruding structure 11 to communicate with the second chamber 32; moreover, the specific location of the second oil port 42 is set according to the limit position of the first piston 21, so as to ensure that the first piston 21 can supply oil or discharge oil through the second oil port 42 once during the movement towards the limit position. Similarly, a third port 43 is provided on the cylinder tube 12 and communicates with the third chamber 33 for supplying oil to or discharging oil from the third chamber 33; the third oil port 43 may directly penetrate through the cylinder 12 to communicate with the third cavity 33, or may penetrate through the cylinder 12 and the protruding structure 11 in sequence to communicate with the third cavity 33; moreover, the specific location of the third oil port 43 is set according to the limit position of the second piston 22, so as to ensure that the oil can be supplied or discharged through the third oil port 43 during the movement of the second piston 22 towards the limit position.
Alternatively, as shown in fig. 1, one of the first piston 21 and the second piston 22 is integrally formed with the piston rod 23, and the other of the first piston 21 and the second piston 22 is detachably connected to the piston rod 23.
In this embodiment, one of the first piston 21 and the second piston 22 is integrally formed with the piston rod 23, and the other is detachably connected to the piston rod 23, so as to improve the convenience of mounting and dismounting the piston structure 2 in the cylinder body 1 and facilitate the later maintenance of the supercharger structure while ensuring the structural strength of the piston structure 2; on the other hand, the production and manufacturing difficulty of the piston structure 2 and the cylinder body 1 is reduced; on the other hand, it is convenient to provide a corresponding seal structure (i.e., the third seal structure 8, described later) at the junction of the detachably connected piston rod 23 and the corresponding piston (the first piston 21 or the second piston 22).
Alternatively, both the first piston 21 and the second piston 22 may be detachably connected to the piston rod 23.
Optionally, as shown in fig. 1, the piston structure 2 further includes a fastening nut 24, the piston rod 23 includes a piston rod body 231 and a connecting portion 232 disposed at an end of the piston rod body 231 away from the first piston 21, a diameter of the connecting portion 232 is smaller than a diameter of the piston rod body 231; the second piston 22 is adapted to be sleeved on the connecting portion 232 and is located between the piston rod body 231 and the fastening nut 24 to be locked by the fastening nut 24.
In this embodiment, the first piston 21 is integrally formed with the piston rod body 231 of the piston rod 23, and is located at one end of the piston rod body 231 facing the first cylinder head 13; the piston rod body 231 is equipped with connecting portion 232 towards the one end of second cylinder cap 14, and piston rod body 231 and connecting portion 232 coaxial setting all are cylindricly, and connecting portion 232's diameter is less than piston rod body 231's diameter to carry on spacingly to second piston 2. Specifically, the second piston 22 is adapted to be sleeved on the connecting portion 232 and abut against an end portion of the piston rod body 231 facing the second cylinder head 14, and the fastening nut 24 is disposed at an end of the second piston 22 away from the piston rod body 231 and is in threaded connection with the connecting portion 232, so that the second piston 22 is clamped by the piston rod body 231 and the fastening nut 24 to limit the second piston 22, and the second piston 22 is locked on the piston rod 23. By arranging the second piston 22 suitable for disassembly and assembly, when the piston structure 2 is assembled with the cylinder 1, the piston rod 23 passes through the area enclosed by the convex structure 11, then the second piston 22 is installed on the connecting part 232 of the piston rod 23, and then the first cylinder head 13 and the second cylinder head 14 are installed at the two ends of the cylinder tube 12. So, promoted the convenience of booster structure assembly.
Optionally, as shown in fig. 1, the second cylinder head 14 is disposed corresponding to the fastening nut 24, and the second cylinder head 14 is provided with an accommodating groove 141 adapted to be in plug-fit with the connecting portion 232 and the fastening nut 24.
In this embodiment, when the second cylinder head 14 is used to define one limit position of the second piston 22, that is, when the second cylinder head 14 limits the stroke of the second piston 22 moving towards the second cylinder head 14, the second cylinder head 14 is provided with the receiving groove 141 for being in plug-in fit (or clearance fit) with the fastening nut 24 and the end of the connecting portion 232 facing the receiving groove 141, so as to receive the fastening nut 24 and the end of the connecting portion 232 facing the receiving groove 141, so as to avoid that only the fastening nut 24 and the connecting portion 232 abut against the second cylinder head 14 when the piston structure 2 moves to the limit position towards the fourth cavity 34, so that the contact area between the piston structure 2 and the second cylinder head 14 is small (the piston structure 2 presses the second cylinder head 14 strongly), which may cause the second cylinder head 14 to be easily damaged. So, when making piston structure 2 move to extreme position towards second cylinder cap 14, fastening nut 24 and connecting portion 232 insert the holding tank 141 towards the one end of holding tank 141 and second piston 22 is laminated with second cylinder cap 14 to increase piston structure 2 and the area of contact of second cylinder cap 14, reduce the pressure of piston structure 2 to second cylinder cap 14, avoid piston structure 2 to cause the damage to second cylinder cap 14.
Optionally, as shown in fig. 1 and fig. 2, the supercharger structure further includes a first sealing structure 5, and the first sealing structure 5 is adapted to be disposed at a sliding connection between the first piston 21 and an inner side wall of the cylinder 1, a sliding connection between the second piston 22 and an inner side wall of the cylinder 1, and a sliding connection between the protrusion structure 11 and the piston rod 23.
In this embodiment, the first sealing structure 5 is used for sealing the sliding connection between the piston structure 2 and the cylinder 1, and specifically, the first sealing structure 5 is provided with a plurality of sealing structures, the sliding connection between the first piston 21 and the inner side wall of the cylinder 1 (cylinder 12), the sliding connection between the second piston 22 and the inner side wall of the cylinder 1 (cylinder 12), and the sliding connection between the protrusion structure 11 and the piston rod 23 are all provided with the first sealing structure 5 in an annular shape, so as to seal the corresponding sliding connection, thereby ensuring the isolation between the first cavity 31, the second cavity 32, the third cavity 33 and the fourth cavity 34, avoiding the mutual circulation of hydraulic oil in the first cavity 31, the second cavity 32, the third cavity 33 and the fourth cavity 34, and further ensuring the normal operation of the supercharger structure.
Optionally, as shown in fig. 1 and fig. 2, the side walls of the first piston 21 and the second piston 22 and the inner side wall of the protruding structure 11 are provided with a first annular groove 6, and the first sealing structure 5 is adapted to be disposed in the first annular groove 6.
In this embodiment, the first sealing structure 5 disposed at the sliding connection between the first piston 21 and the inner side wall of the cylinder 1 is preferably disposed on the side wall of the first piston 21, the first sealing structure 5 disposed at the sliding connection between the second piston 22 and the inner side wall of the cylinder 1 is preferably disposed on the side wall of the second piston 22, and the first sealing structure 5 disposed at the sliding connection between the boss structure 11 and the piston rod 23 is preferably disposed on the inner side wall of the boss structure 11. Specifically, all be equipped with on the lateral wall of first piston 21, second piston 22 and the inside wall of bellying 11 and be annular first recess 6, be annular first seal structure 5 equally and then set up in first recess 6 to guarantee the stability of first seal structure 5 setting position, thereby guarantee that first seal structure 5 can be stable play sealed effect.
Optionally, as shown in fig. 1 and fig. 2, the supercharger structure further includes a second sealing structure 7, and the second sealing structure 7 is adapted to be disposed at a junction of the first cylinder head 13 and the cylinder tube 12 and a junction of the second cylinder head 14 and the cylinder tube 12.
In this embodiment, the second sealing structure 7 is used to seal the joint between the cylinder barrel 12 and the cylinder head (i.e., the first cylinder head 13 and the second cylinder head 14), specifically, the joints between the first cylinder head 13 and the cylinder barrel 12, the second cylinder head 14 and the cylinder barrel 12 are all provided with the second sealing structure 7 in an annular shape, so as to prevent the hydraulic oil in the first cavity 31 from leaking from the joint between the first cylinder head 13 and the cylinder barrel 12 and prevent the hydraulic oil in the fourth cavity 34 from leaking from the joint between the fourth cylinder head and the cylinder barrel 12, and ensure the sealing performance of the joint between the first cylinder head 13 and the cylinder barrel 12 and the sealing performance of the joint between the second cylinder head 14 and the cylinder barrel 12. Correspondingly, the corresponding position of the first cylinder head 13 and/or the cylinder barrel 12 is provided with an annular groove structure for mounting the second sealing structure 7, so as to ensure the stability of the setting position of the second sealing structure 7.
Optionally, as shown in fig. 1 and 2, the supercharger structure further includes a third sealing structure 8, where the third sealing structure 8 is adapted to be disposed at a connection between the second piston 22 and the piston rod body 231, and/or a connection between the second piston 22 and the connecting portion 232.
In this embodiment, the third sealing structure 8 is used for sealing the joint of the second piston 22 and the piston rod 23, and specifically, the third sealing structure 8 may be disposed at the joint of the second piston 22 and the piston rod body 231, may be disposed at the joint of the second piston 22 and the connecting portion 232, or may be disposed at both the joint of the second piston 22 and the piston rod body 231 and the joint of the second piston 22 and the connecting portion 232. When the third sealing structure 8 is disposed at the joint of the second piston 22 and the piston rod body 231, the third sealing structure 8 may be disposed on at least one of the second piston 22 and the piston rod body 231, and the third sealing structure 8, which is also annular, is mounted on the second piston 22 or the piston rod body 231 by providing an annular groove structure, so as to ensure the stability of the disposition position of the third sealing structure 8 and the sealing property at the joint of the second piston 22 and the piston rod body 231. When the third sealing structure 8 is disposed at the junction of the second piston 22 and the connecting portion 232, the third sealing structure 8 may be disposed on at least one of the second piston 22 and the connecting portion 232, and the third sealing structure 8, which is also annular, is mounted on the second piston 22 or the connecting portion 232 by providing a groove structure, which is annular, so as to ensure the stability of the disposition position of the third sealing structure 8 and the sealing property at the junction of the second piston 22 and the connecting portion 232. Therefore, the tightness of the connection between the second piston 22 and the piston rod 23 is ensured, and the phenomenon that the normal work of the supercharger structure is influenced by oil leakage between the third cavity 33 and the fourth cavity 34 caused by the communication between the third cavity 33 and the fourth cavity 34 is avoided.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (10)
1. A supercharger structure, characterized by comprising a cylinder body (1) and a piston structure (2) arranged in the cylinder body (1), wherein the piston structure (2) comprises a piston rod (23) and a first piston (21) and a second piston (22) which are respectively arranged at two ends of the piston rod (23), and the first piston (21) and the second piston (22) are both suitable for being in sliding connection with the inner side wall of the cylinder body (1); the inner side wall of the cylinder body (1) is convexly provided with a protruding structure (11) which is suitable for being sleeved on the piston rod (23) and is in sliding connection with the piston rod (23), the first piston (21), the protruding structure (11) and the second piston (22) are arranged on the axis direction of the cylinder body (1) to sequentially divide the inside of the cylinder body (1) into a first cavity (31), a second cavity (32), a third cavity (33) and a fourth cavity (34), the cylinder body (1) is provided with a first oil port (41), a second oil port (42), a third oil port (43) and a fourth oil port (44) which are suitable for being respectively corresponding to the first cavity (31), the second cavity (32), the third oil port (33) and the fourth cavity (34), and the first oil port (41), the second oil port (42), the third oil port (43) and the fourth oil port (44) are respectively arranged on the inner side wall of the cylinder body (1), The second oil port (42), the third oil port (43) and the fourth oil port (44) input or discharge hydraulic oil.
2. The supercharger structure according to claim 1, wherein the cylinder block (1) comprises a cylinder barrel (12) with openings at two ends, and a first cylinder cover (13) and a second cylinder cover (14) which are respectively arranged at two ends of the cylinder barrel (12), and the first cylinder cover (13) and the second cylinder cover (14) are detachably connected with the cylinder barrel (12); the protruding structure (11) is suitable for being arranged on the inner side wall of the cylinder barrel (12).
3. Supercharger arrangement according to claim 2, characterised in that the first oil port (41) is adapted to be provided in at least one of the first cylinder head (13) and the cylinder barrel (12) and communicates with the first chamber (31); the fourth oil port (44) is adapted to be arranged on at least one of the second cylinder head (14) and the cylinder barrel (12) and is communicated with the fourth cavity (34); the second oil port (42) and the third oil port (43) are suitable for being arranged on the cylinder barrel (12) and are respectively communicated with the second cavity (32) and the third cavity (33).
4. A supercharger arrangement according to claim 2, characterised in that one of the first piston (21) and the second piston (22) is formed integrally with the piston rod (23), and the other of the first piston (21) and the second piston (22) is detachably connected to the piston rod (23).
5. The supercharger arrangement according to claim 4, wherein the piston arrangement (2) further comprises a fastening nut (24), the piston rod (23) comprising a piston rod body (231) and a connection (232) arranged at an end of the piston rod body (231) remote from the first piston (21), the connection (232) having a smaller diameter than the piston rod body (231); the second piston (22) is suitable for being sleeved on the connecting portion (232) and is located between the piston rod body (231) and the fastening nut (24) to be locked through the fastening nut (24).
6. A supercharger arrangement according to claim 5, characterised in that the second cylinder head (14) is arranged in correspondence with the fastening nut (24), and in that the second cylinder head (14) is provided with a receiving groove (141) adapted to the plug-in cooperation with the connection (232) and the fastening nut (24).
7. A supercharger arrangement according to any one of claims 1-6, characterised by further comprising a first sealing arrangement (5), the first sealing arrangement (5) being adapted to be arranged at the sliding connection of the first piston (21) to the inner side wall of the cylinder (1), the sliding connection of the second piston (22) to the inner side wall of the cylinder (1) and the sliding connection of the projection arrangement (11) to the piston rod (23).
8. A supercharger arrangement according to claim 7, characterised in that the side walls of the first piston (21), the second piston (22) and the raised structure (11) are provided with an annular first groove (6), and the first sealing structure (5) is adapted to be arranged in the first groove (6).
9. A supercharger arrangement according to any one of claims 1-6, characterised in that it further comprises a second sealing structure (7), which second sealing structure (7) is adapted to be arranged at the connection of the first cylinder head (13) and the cylinder barrel (12) and at the connection of the second cylinder head (14) and the cylinder barrel (12).
10. Supercharger arrangement according to claim 5 or 6, characterised by a third sealing arrangement (8), wherein the third sealing arrangement (8) is adapted to be arranged at the connection of the second piston (22) to the piston rod body (231) and/or at the connection of the second piston (22) to the connection (232).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111489578.4A CN114151393A (en) | 2021-12-08 | 2021-12-08 | Supercharger structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111489578.4A CN114151393A (en) | 2021-12-08 | 2021-12-08 | Supercharger structure |
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| Publication Number | Publication Date |
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| CN114151393A true CN114151393A (en) | 2022-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111489578.4A Pending CN114151393A (en) | 2021-12-08 | 2021-12-08 | Supercharger structure |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056664A (en) * | 1990-05-21 | 1991-12-04 | 刘玉震 | Copper liquid energy recovering device for nitrogenous fertilizer producing |
| CA2431620A1 (en) * | 2003-06-10 | 2004-12-10 | Daniel L. Forest | Membrane and hydraulic intensifier purification system |
| CN201502579U (en) * | 2009-05-27 | 2010-06-09 | 张明芳 | Booster cylinder and booster pump adopting same |
| DE102011005404A1 (en) * | 2011-03-11 | 2012-09-13 | Continental Teves Ag & Co. Ohg | Linear actuator for vehicle, has actuating chambers that are arranged between floating pistons and partition wall, are hydraulically connected with each other and are short-circuited through valve system |
| CN105889154A (en) * | 2014-11-28 | 2016-08-24 | 陕西鼎基能源科技有限公司 | High-pressure gas pressure energy isentropic supercharger |
| CN112160947A (en) * | 2020-10-28 | 2021-01-01 | 刘涛 | Intelligent energy-saving hydraulic power system |
-
2021
- 2021-12-08 CN CN202111489578.4A patent/CN114151393A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056664A (en) * | 1990-05-21 | 1991-12-04 | 刘玉震 | Copper liquid energy recovering device for nitrogenous fertilizer producing |
| CA2431620A1 (en) * | 2003-06-10 | 2004-12-10 | Daniel L. Forest | Membrane and hydraulic intensifier purification system |
| CN201502579U (en) * | 2009-05-27 | 2010-06-09 | 张明芳 | Booster cylinder and booster pump adopting same |
| DE102011005404A1 (en) * | 2011-03-11 | 2012-09-13 | Continental Teves Ag & Co. Ohg | Linear actuator for vehicle, has actuating chambers that are arranged between floating pistons and partition wall, are hydraulically connected with each other and are short-circuited through valve system |
| CN105889154A (en) * | 2014-11-28 | 2016-08-24 | 陕西鼎基能源科技有限公司 | High-pressure gas pressure energy isentropic supercharger |
| CN112160947A (en) * | 2020-10-28 | 2021-01-01 | 刘涛 | Intelligent energy-saving hydraulic power system |
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