Pressure cylinder
By using an external pull-line displacement sensor and a hydraulically controlled check valve in the supercharged cylinder, combined with the design of the pressure transmission, the leakage and sealing problems of traditional supercharged cylinders are solved, and higher stability and manufacturing accuracy are achieved.
Patent Information
- Application Number
- CN202323579596.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-26
AI Technical Summary
When traditional supercharged cylinders increase oil passages to increase output force, the risk of leakage increases, and the sealing performance of the built-in displacement sensor requires high requirements, high manufacturing accuracy, and complex structure.
A pressurized cylinder including a cylinder block, central shaft, piston rod and hydraulically controlled check valve is designed. It adopts an external pull-line displacement sensor to control the liquid flow direction through the second oil channel and the hydraulically controlled check valve, and combines pressure. The transmission detects pressure signals, avoiding traditional hole punching structures, improving sealing and manufacturing accuracy.
It effectively reduces leakage risk, improves sealing and manufacturing accuracy, enhances the stability and operation controllability of the hydraulic system, and has a relatively simple structure.
Smart Images
Figure CN222334127U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oil cylinders, in particular to a booster cylinder. Background Art
[0002] The booster cylinder uses other external forces to increase the pressure of the liquid, so that the hydraulic cylinder can produce a greater output force or speed. The booster cylinder has the characteristics of fast action speed, stable transmission, simple cylinder device, and easy output adjustment. Under the same conditions, it can achieve the highest output of the hydraulic press with low energy consumption.
[0003] Traditional boost cylinders use multiple oil channels to achieve the increase, which means that the oil channels are increased and the risk of leakage also increases accordingly; the built-in displacement sensor needs to be drilled and the sealing performance still needs to be comprehensively considered; therefore, the overall manufacturing accuracy must meet higher requirements. Utility Model Content
[0004] The utility model aims to provide a booster cylinder with novel structure and high stability.
[0005] The purpose of the utility model is achieved as follows: a booster cylinder, comprising a cylinder body, and also comprising a central axis arranged in the cylinder body;
[0006] The cylinder body is a cylindrical body with an opening at one end, a cylinder through hole is provided at the center of the bottom plate of the cylinder body, and one end of the center shaft is inserted into the through hole and fixedly connected to the cylinder body through a nut; the center shaft is T-shaped, a first oil passage and a second oil passage are provided inside the center shaft, and a piston rod is provided between the center shaft and the cylinder body; the piston rod is a cylindrical body with an opening at one end, a piston through hole is provided at the center of the bottom plate of the piston rod, and the center shaft is inserted into the piston through hole at the center of the bottom plate of the piston rod; the opening of the piston rod is connected to the gland by bolts;
[0007] A joint and a hydraulically controlled one-way valve are provided on the cylinder wall of the cylinder body, and the joint is connected to the pressure transmission; one end of the hydraulically controlled one-way valve is connected to an oil passage leading to the outside of the cylinder body, and the other end is connected to an oil inlet; a displacement sensor is provided on the outer wall of the cylinder body; and an anti-rotation plate is connected to the pressure cover.
[0008] Preferably, the anti-rotation plate is an L-shaped plate composed of a horizontal plate and a vertical plate, the vertical plate is connected to the cover plate by bolts, and the horizontal plate passes through a through-hole seat on the outside of the cylinder body and extends to one side of the displacement sensor.
[0009] Preferably, the displacement sensor is a pull-rope type displacement sensor, the extended end of the displacement sensor is connected to the horizontal plate of the anti-rotation plate through a connecting rod; the displacement sensor body is connected to the outer wall of the cylinder body through a connecting seat.
[0010] Preferably, the first outlet of the first oil channel is placed at the junction of the central axis and the cylinder body, and the second outlet of the first oil channel is connected to the inner cavity of the piston rod; the third outlet of the first oil channel is sealed by a sealing gasket and a screw cover; sealing rings are provided on the left and right sides of the first outlet, and the first outlet is connected to the outlet oil channel on the cylinder body.
[0011] Preferably, the fourth outlet of the second oil passage is communicated with the inner cavity of the cylinder body, and the fifth outlet of the second oil passage is communicated with the inner cavity between the central shaft and the cover plate.
[0012] Preferably, the inner diameter surface of the cylinder body near the opening is provided with a raised ring which contacts with the piston rod, and a gap is left between the inner diameter surface of the cylinder body inside the raised ring and the piston rod.
[0013] Preferably, a plurality of sealing rings are provided at the junction between the piston rod and the central axis, and at the junction between the piston rod and the cylinder body.
[0014] Preferably, when the piston rod runs to the minimum stroke, the gland contacts the central axis and the end face of the piston rod does not contact the inner end face of the cylinder body, leaving a gap.
[0015] Compared with the prior art, the utility model is beneficial in that:
[0016] 1. The oil inlet and the second oil channel cooperate with each other. When oil is introduced into the oil inlet, the piston rod extends outward, and the fourth outlet of the second oil channel is exposed. At this time, the hydraulic oil enters the inner cavity between the central shaft and the cover plate through the second oil channel, that is, the end of the piston rod and the inner side of the cover plate are supported by hydraulic oil, and the overall bearing pressure is greatly increased;
[0017] 2. The use of a hydraulically controlled one-way valve can control the flow direction of the liquid in the hydraulic transmission system, prevent the liquid from flowing back in the system, and ensure the normal operation of the hydraulic system; the use of a pressure transmission can convert the pressure into a pneumatic signal or an electric signal for detection, which has a better effect; the use of an external pull-wire displacement sensor can effectively avoid the traditional structure of punching and inserting displacement rods, greatly improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Among them, 1 cylinder body, 101 through hole, 102 through hole seat, 103 raised ring, 2 center shaft, 201 first oil channel, 202 second oil channel, 3 nut, 4 piston rod, 401 piston through hole, 5 pressure cover, 6 anti-rotation plate, 601 horizontal plate, 602 vertical plate, 7 joint, 8 hydraulically controlled one-way valve, 9 pressure transmission, 10 displacement sensor, 11 connecting rod. DETAILED DESCRIPTION
[0020] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0021] It should be noted that in the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. Terms such as "horizontal", "vertical", and "overhanging" do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0023] like Figure 1 As shown, a booster cylinder comprises a cylinder body 1 and a central shaft 2 arranged in the cylinder body 1;
[0024] The cylinder body 1 is a cylinder with an opening at one end, a cylinder through hole 101 is provided at the center of the bottom plate of the cylinder body 1, and one end of the center shaft 2 is inserted into the through hole 101 and fixedly connected to the cylinder body 1 through a nut 3; the center shaft 2 is T-shaped, and the base of the T-shaped center shaft 2 is located at the opening of the cylinder body 1, and a first oil passage 201 and a second oil passage 202 are provided inside the center shaft 2, and a piston rod 4 is provided between the center shaft 2 and the cylinder body; the piston rod 4 is a cylinder with an opening at one end, a piston through hole 401 is provided at the center of the bottom plate of the piston rod 4, and the center shaft 2 is inserted into the piston through hole 401 at the center of the bottom plate of the piston rod; the opening of the piston rod 4 is connected to the pressure cover 5 by bolts; the pressure cover 5 is connected with an anti-rotation plate 6;
[0025] like Figure 1As shown, a connector 7 and a hydraulically controlled one-way valve 8 are provided on the wall of the cylinder body 1. The connector 7 is connected to a pressure transmission 9 to convert the pressure into a pneumatic signal or an electric signal for detection, which has a better effect. One end of the hydraulically controlled one-way valve 8 is connected to an oil passage leading to the outside of the cylinder body, and the other end is connected to an oil inlet 9. A displacement sensor 10 is provided on the outer wall of the cylinder body 1.
[0026] like Figure 1 As shown, the anti-rotation plate 6 is an L-shaped plate composed of a horizontal plate 601 and a vertical plate 602 . The vertical plate 602 is connected to the cover plate 5 by bolts, and the horizontal plate 601 passes through the through-hole seat 102 on the outside of the cylinder body 1 and extends to one side of the displacement sensor 10 .
[0027] like Figure 1 As shown, the displacement sensor 10 is a pull-rope type displacement sensor, and the extended end of the displacement sensor 10 is connected to the horizontal plate 601 of the anti-rotation plate 6 through a connecting rod 11; the displacement sensor body is connected to the outer wall of the cylinder body through a connecting seat, and the anti-rotation plate is driven to move through the cover plate. The anti-rotation plate is connected to the pull-rope type displacement sensor, and the running stroke of the piston rod is monitored by the length of the pulled-out rope.
[0028] like Figure 1 As shown, the first outlet of the first oil passage 201 is placed at the junction of the central axis 2 and the cylinder body 1, the second outlet of the first oil passage 201 is connected to the inner cavity of the piston rod 4; the third outlet of the first oil passage 201 is sealed by a sealing gasket and a screw cover; sealing rings are provided on the left and right sides of the first outlet, the first outlet is connected to the outlet oil passage on the cylinder body, and the first oil passage is used as a favorable channel for returning oil and returning the piston rod.
[0029] like Figure 1 As shown, the fourth outlet of the second oil channel 202 is connected to the inner cavity of the cylinder body, and the fifth outlet of the second oil channel 202 is connected to the inner cavity between the central axis 2 and the cover plate 5. Oil enters the fourth outlet, and the hydraulic oil enters the inner cavity between the pressure cover and the central axis through the fifth outlet to form a second supporting force.
[0030] like Figure 1 As shown, the inner diameter surface of the cylinder body 1 near the opening is provided with a raised ring 103 which contacts the piston rod 4. The raised ring is equivalent to a guide sleeve, which not only ensures the sealing between the cylinder body and the piston rod, but also guides the stroke of the piston rod. A gap is left between the inner diameter surface of the cylinder body on the inner side of the raised ring and the piston rod, and the gap between the inner diameter surface of the cylinder body and the piston rod is used as a channel for oil inlet.
[0031] like Figure 1 As shown, multiple sets of sealing rings are provided at the junction of the piston rod 4 and the central shaft 2, and at the junction of the piston rod 4 and the cylinder body 1. The sealing rings can be in the form of various combinations to further enhance the sealing performance and ensure that each connection will not leak.
[0032] like Figure 1As shown, when the piston rod 4 runs to the minimum stroke, the pressure cover 5 contacts the central axis 2 and the end face of the piston rod 4 does not contact the inner end face of the cylinder body 1, leaving a gap; ensuring that the gap between the end face of the piston rod and the end face of the cylinder body and the gap between the inner diameter surface of the cylinder body on the inner side of the raised ring and the piston rod are connected, the oil can enter the gap between the end face of the piston rod and the end face of the cylinder body after entering the oil inlet, thereby pushing the piston rod to extend outward.
[0033] The working principle of the utility model is explained as follows: when oil is introduced into the oil inlet, the piston rod extends outward, at which time the fourth outlet of the second oil channel is exposed, and at this time the hydraulic oil enters the inner cavity between the central shaft and the cover plate through the second oil channel, and the first oil channel returns oil; when oil is introduced into the first oil channel, oil is returned from the original oil inlet and the piston rod retracts.
[0034] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.
Claims
1. A booster cylinder, characterized in that: It includes a cylinder body and a central shaft disposed in the cylinder body; The cylinder body is a cylindrical body with an opening at one end, a cylinder through hole is provided at the center of the bottom plate of the cylinder body, and one end of the center shaft is inserted into the through hole and fixedly connected to the cylinder body through a nut; the center shaft is T-shaped, a first oil passage and a second oil passage are provided inside the center shaft, and a piston rod is provided between the center shaft and the cylinder body; the piston rod is a cylindrical body with an opening at one end, a piston through hole is provided at the center of the bottom plate of the piston rod, and the center shaft is inserted into the piston through hole at the center of the bottom plate of the piston rod; the opening of the piston rod is connected to the gland by bolts; A joint and a hydraulically controlled one-way valve are provided on the cylinder wall of the cylinder body, and the joint is connected to the pressure transmission; one end of the hydraulically controlled one-way valve is connected to an oil passage leading to the outside of the cylinder body, and the other end is connected to an oil inlet; a displacement sensor is provided on the outer wall of the cylinder body; and an anti-rotation plate is connected to the pressure cover.
2. A booster cylinder according to claim 1, characterized in that: The anti-rotation plate is an L-shaped plate composed of a horizontal plate and a vertical plate. The vertical plate is connected to the cover plate by bolts, and the horizontal plate passes through a through-hole seat on the outside of the cylinder body and extends to one side of the displacement sensor.
3. A booster cylinder according to claim 1, characterized in that: The displacement sensor is a pull-rope type displacement sensor, the extended end of the displacement sensor is connected to the horizontal plate of the anti-rotation plate through a connecting rod; the displacement sensor body is connected to the outer wall of the cylinder body through a connecting seat.
4. A booster cylinder according to claim 1, characterized in that: The first outlet of the first oil passage is placed at the junction of the central axis and the cylinder body, the second outlet of the first oil passage is connected to the inner cavity of the piston rod; the third outlet of the first oil passage is sealed by a sealing gasket and a screw cover; sealing rings are provided on the left and right sides of the first outlet, and the first outlet is connected to the outlet oil passage on the cylinder body.
5. A booster cylinder according to claim 1, characterized in that: The fourth outlet of the second oil passage is communicated with the inner cavity of the cylinder body, and the fifth outlet of the second oil passage is communicated with the inner cavity between the central shaft and the cover plate.
6. A booster cylinder according to claim 1, characterized in that: The inner diameter surface of the cylinder body near the opening is provided with a raised ring which contacts with the piston rod, and a gap is left between the inner diameter surface of the cylinder body inside the raised ring and the piston rod.
7. A booster cylinder according to claim 1, characterized in that: A plurality of sealing rings are arranged at the junction of the piston rod and the central axis and at the junction of the piston rod and the cylinder body.
8. The booster cylinder according to claim 1, characterized in that: When the piston rod runs to the minimum stroke, the gland contacts the central axis and the end surface of the piston rod does not contact the inner end surface of the cylinder body, leaving a gap.