Pressurizing cylinder capable of preventing backflow of hydraulic oil

Abstract

The utility model belongs to the technical field of pressure cylinders, and particularly relates to a hydraulic oil backflow prevention pressure cylinder which comprises an air cylinder barrel and a pressure piston, the pressure piston and a pressure rod are sequentially installed in the air cylinder barrel, one end of the air cylinder barrel is fixed to one side of a middle cover, and the other side of the middle cover is connected with an iron cylinder barrel. According to the pressurizing cylinder capable of preventing backflow of the hydraulic oil, when the pressurizing rod moves downwards to pressurize, a fixing rod drives a spherical block to extrude along a curved groove, so that a connecting plate rotates by 90 degrees, a connecting pad and an oil guide groove are in a sealed state, and the hydraulic oil in the iron cylinder barrel is not prone to flowing back into an oil storage barrel; the performance of the pressure cylinder is not easily affected by backflow of hydraulic oil, force or power provided by the pressure cylinder is not easily weakened, the fixing plate and the oil storage barrel are limited together, the protective cover is limited on the outer side of the oil level induction rod, and the oil level induction rod of the pressure cylinder can be prevented from being damaged by external force.

Description

Technical Field

[0001] The utility model relates to the technical field of booster cylinders, in particular to a booster cylinder with hydraulic oil backflow prevention function. Background Art

[0002] The booster cylinder, also known as the gas-liquid booster cylinder, is a device that combines the advantages of the gas cylinder and the oil cylinder. The booster cylinder is mainly composed of three main components: the oil cylinder, the gas cylinder and the oil storage barrel. The main function of the booster cylinder is to increase the pressure. It uses pure gas pressure as the power and utilizes the ratio of the large and small piston areas of the booster to increase the low pressure of the gas pressure by dozens of times for the use of the oil cylinder, so that it can achieve the effect of high output of the hydraulic cylinder.

[0003] The booster cylinder usually has smooth motion characteristics and high control accuracy, and can achieve precise position control and speed control. The hydraulic oil in the booster cylinder transfers energy and force by flowing. When the hydraulic oil flows back, it will cause the working pressure of the hydraulic system to drop, thereby reducing the efficiency of the hydraulic system, which will affect the performance of the booster cylinder, weaken the force or power provided by the booster cylinder, and affect its normal operation. Therefore, we propose a booster cylinder with anti-backflow of hydraulic oil. Utility Model Content

[0004] The utility model aims to provide a booster cylinder with hydraulic oil backflow prevention function to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a booster cylinder with anti-backflow of hydraulic oil, comprising a cylinder barrel and a booster piston, wherein a booster piston and a booster rod are sequentially installed inside the cylinder barrel, one end of the cylinder barrel is fixed to one side of a middle cover, and the other side of the middle cover is connected to an iron cylinder barrel, a front piston and a piston rod are sequentially installed inside the iron cylinder barrel, an oil storage barrel is fixed to the side of the middle cover close to the cylinder barrel, an oil guide groove is opened inside the middle cover, and two ends of the oil guide groove are respectively penetrated by the iron cylinder barrel and the oil storage barrel, an oil level sensing rod is installed on one side of the oil storage barrel, and a front rod is fixed to one end of the piston rod.

[0006] Preferably, one side of the boost rod is connected to a fixing rod, a sliding groove is provided on a side of the cylinder barrel close to the fixing rod, and the sliding groove is slidably docked with the fixing rod.

[0007] Preferably, the inner side of the slide groove is movably connected to the connecting rod via a bearing, and the outer side of the connecting rod is provided with a curved groove and a straight groove in sequence, and the curved groove is slidably docked with the spherical block.

[0008] Preferably, the spherical block is connected to a fixing rod, a connecting plate is fixed to the lower side of the connecting rod, and the connecting plate is movably connected to the middle cover via a bearing.

[0009] Preferably, the connecting plate is movably connected to the oil guide groove, and a connecting pad is bonded to the outer side of the connecting plate.

[0010] Preferably, a protective cover is provided on the outer side of the oil level sensing rod, and both ends of the protective cover are respectively connected to a fixing plate, and a limiting bolt passes through the interior of the fixing plate.

[0011] Preferably, a limiting groove is provided on one side of the oil storage cylinder close to the limiting bolt, and the limiting bolt is connected to the limiting groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: when the booster rod moves downward to boost the pressure, the fixed rod drives the spherical block to be squeezed along the curved groove, so that the connecting plate rotates ninety degrees, and the connecting pad and the oil guide groove form a sealed state, so that the hydraulic oil inside the iron cylinder barrel is not easy to flow back to the inside of the oil storage cylinder, and the performance of the booster cylinder is not easily affected by the reflux of hydraulic oil, and the force or power provided by the booster cylinder is not easy to weaken, and the fixed plate and the oil storage cylinder are restricted together, and the protective cover is restricted to the outside of the oil level sensing rod, which can prevent the oil level sensing rod of the booster cylinder from being damaged by external force.

[0013] 1. The booster cylinder with hydraulic oil backflow prevention usually has smooth motion characteristics and high control accuracy, and can achieve precise position control and speed control. When the booster rod moves down to boost pressure, the booster rod drives the fixed rod to move down along the slide groove, so that the fixed rod drives the spherical block to be squeezed along the curved groove, so that the connecting rod rotates, and the connecting plate rotates ninety degrees, so that the connecting pad and the oil guide groove form a sealed state, so that the hydraulic oil inside the iron cylinder is not easy to flow back to the inside of the oil storage cylinder, so that the performance of the booster cylinder is not easily affected by the backflow of hydraulic oil, and the force or power provided by the booster cylinder is not easy to weaken;

[0014] 2. When the booster cylinder with hydraulic oil backflow prevention is put into use, the limit bolt is passed through the fixing plate and connected with the limit groove, and then the limit bolt is rotated to restrict the fixing plate and the oil storage cylinder together, so that the protective cover is restricted to the outside of the oil level sensing rod, so that the protective cover can prevent external impact force from damaging the oil level sensing rod, and can prevent the oil level sensing rod of the booster cylinder from being damaged by external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the front cross-sectional structure of the connecting rod and the spherical block of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0018] Figure 4This is a schematic diagram of the front cross-sectional structure of the protective cover and the limiting bolt of the utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting rod and the curved groove of the utility model;

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting rod and the straight groove of the utility model.

[0021] In the figure: 1. Cylinder barrel; 101. Booster piston; 102. Booster rod; 103. Middle cover; 104. Iron cylinder barrel; 105. Front piston; 106. Piston rod; 107. Front rod; 108. Oil storage cylinder; 109. Oil guide groove; 110. Oil level sensing rod; 2. Fixed rod; 201. Slide groove; 202. Connecting rod; 203. Curved groove; 2031. Straight groove; 204. Spherical block; 205. Connecting plate; 206. Connecting pad; 3. Protective cover; 301. Fixed plate; 302. Limit bolt; 303. Limit groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 3 , Figure 5 and Figure 6The utility model provides a technical solution: a booster cylinder for preventing hydraulic oil from flowing back, comprising a cylinder barrel 1 and a booster piston 101, wherein the booster piston 101 and the booster rod 102 are sequentially installed inside the cylinder barrel 1, one end of the cylinder barrel 1 is fixed to one side of a middle cover 103, and the other side of the middle cover 103 is connected to an iron cylinder barrel 104, and a front piston 105 and a piston rod 106 are sequentially installed inside the iron cylinder barrel 104, an oil storage barrel 108 is fixed to one side of the middle cover 103 close to the cylinder barrel 1, and an oil guide groove 109 is provided inside the middle cover 103, and the two ends of the oil guide groove 109 are respectively penetrated by the iron cylinder barrel 104 and the oil storage barrel 108, an oil level sensing rod 110 is installed on one side of the oil storage barrel 108, a front rod 107 is fixed to one end of the piston rod 106, a fixing rod 2 is connected to one side of the booster rod 102, and the cylinder barrel 1 is close to the fixed A slide groove 201 is provided on one side of the fixed rod 2, and the slide groove 201 is slidably docked with the fixed rod 2, the inner side of the slide groove 201 is movably connected with the connecting rod 202 through a bearing, and the outer side of the connecting rod 202 is sequentially provided with a curved groove 203 and a straight groove 2031, the curved groove 203 is slidably docked with the spherical block 204, the spherical block 204 is connected to the fixed rod 2, a connecting plate 205 is fixed on the lower side of the connecting rod 202, and the connecting plate 205 is movably connected with the middle cover 103 through a bearing, the connecting plate 205 is movably docked with the oil guide groove 109, and a connecting pad 206 is bonded to the outer side of the connecting plate 205, the diameter of the fixed rod 2 matches the inner wall spacing of the slide groove 201, the curved groove 203 and the straight groove 2031 match the spherical block 204, the connecting pad 206 is made of rubber, and the connecting pad 206 is squeezed with the oil guide groove 109.

[0024] In specific implementation, according to Figure 1-Figure 3 , Figure 5 and Figure 6The boost cylinder usually has smooth motion characteristics and high control accuracy, and can achieve precise position control and speed control. When the boost cylinder is running, the hydraulic oil in the oil storage cylinder 108 enters the interior of the iron cylinder barrel 104 through the oil guide groove 109. At this time, the cylinder barrel 1 is inhaled, causing the boost piston 101 and the boost rod 102 to move downward for boosting. When the boost rod 102 moves downward for boosting, the boost rod 102 drives the fixed rod 2 to move downward along the slide groove 201, causing the fixed rod 2 to drive the spherical block 204 to be squeezed along the curved groove 203, so that the connecting rod 202 rotates, and the spherical block 204 rotates along the curved groove 203. The curved groove 203 matches the spherical block 204, so that the connecting rod 202 stably drives the connecting plate 20 5 is rotated, so that the connecting plate 205 rotates ninety degrees. The connecting pad 206 is made of rubber material with a certain deformation ability, and the connecting pad 206 is squeezed with the oil guide groove 109, so that the connecting pad 206 and the oil guide groove 109 form a sealed state. At this time, when the fixing rod 2 drives the spherical block 204 along the curved groove 203 into the straight groove 2031, the straight groove 2031 matches the spherical block 204, so that the connecting rod 202 does not rotate, so that the connecting pad 206 and the oil guide groove 109 maintain a sealed state, so that the hydraulic oil inside the iron cylinder 104 is not easy to flow back to the inside of the oil storage cylinder 108, so that the performance of the booster cylinder is not easily affected by the reflux of the hydraulic oil, and the force or power provided by the booster cylinder is not easily weakened.

[0025] See also Figure 1 and Figure 4 A protective cover 3 is provided on the outside of the oil level sensing rod 110, and the two ends of the protective cover 3 are respectively connected to the fixing plate 301, and a limiting bolt 302 passes through the inside of the fixing plate 301. A limiting groove 303 is provided on the side of the oil storage cylinder 108 close to the limiting bolt 302, and the limiting bolt 302 is connected to the limiting groove 303. The protective cover 3 is made of transparent plastic material, and the limiting bolt 302 is threadedly connected to the limiting groove 303.

[0026] In specific implementation, according to Figure 1 and Figure 4 When the boost cylinder is put into use, the limiting bolt 302 is passed through the fixing plate 301 and connected with the limiting groove 303, and then the limiting bolt 302 is rotated, and the limiting bolt 302 is threadedly connected with the limiting groove 303, so that the fixing plate 301 and the oil storage cylinder 108 are restricted together, and the protective cover 3 is restricted to the outside of the oil level sensing rod 110, so that the protective cover 3 can prevent the external impact force from damaging the oil level sensing rod 110, and the protective cover 3 is made of transparent plastic material, so that the staff can check the oil level sensing rod 110 through the protective cover 3, which can prevent the oil level sensing rod 110 of the boost cylinder from being damaged by external forces.

[0027] In summary, the boost cylinder usually has smooth motion characteristics and high control accuracy, and can achieve precise position control and speed control. When the boost cylinder is running, the boost rod 102 moves down to increase pressure, so that the fixed rod 2 drives the spherical block 204 to extrude along the curved groove 203, so that the connecting rod 202 rotates, and the connecting pad 206 and the oil guide groove 109 form a sealed state, so that the hydraulic oil inside the iron cylinder 104 is not easy to flow back to the inside of the oil storage cylinder 108, so that the performance of the boost cylinder is not easily affected by the reflux of hydraulic oil, and the force or power provided by the boost cylinder is not easy to weaken. When the boost cylinder is put into use, the fixed plate 301 and the oil storage cylinder 108 are restricted together, and the protective cover 3 is restricted to the outside of the oil level sensing rod 110, so that the protective cover 3 can prevent external impact force from damaging the oil level sensing rod 110, and can prevent the oil level sensing rod 110 of the boost cylinder from being damaged by external force. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A booster cylinder with hydraulic oil backflow prevention, comprising a cylinder barrel (1) and a booster piston (101), characterized in that: A booster piston (101) and a booster rod (102) are sequentially installed inside the cylinder barrel (1), one end of the cylinder barrel (1) is fixed to one side of a middle cover (103), and the other side of the middle cover (103) is connected to an iron cylinder barrel (104), a front piston (105) and a piston rod (106) are sequentially installed inside the iron cylinder barrel (104), an oil storage barrel (108) is fixed on the side of the middle cover (103) close to the cylinder barrel (1), an oil guide groove (109) is provided inside the middle cover (103), and two ends of the oil guide groove (109) are respectively penetrated by the iron cylinder barrel (104) and the oil storage barrel (108), an oil level sensing rod (110) is installed on one side of the oil storage barrel (108), and a front rod (107) is fixed to one end of the piston rod (106).

2. A booster cylinder with hydraulic oil backflow prevention according to claim 1, characterized in that: One side of the boost rod (102) is connected to a fixed rod (2), and a sliding groove (201) is provided on a side of the cylinder barrel (1) close to the fixed rod (2), and the sliding groove (201) is slidably docked with the fixed rod (2).

3. A booster cylinder with hydraulic oil backflow prevention according to claim 2, characterized in that: The inner side of the slide groove (201) is movably connected to the connecting rod (202) via a bearing, and the outer side of the connecting rod (202) is provided with a curved groove (203) and a straight groove (2031) in sequence, and the curved groove (203) is slidably connected to the spherical block (204).

4. A booster cylinder with hydraulic oil backflow prevention according to claim 3, characterized in that: The spherical block (204) is connected to the fixed rod (2), a connecting plate (205) is fixed on the lower side of the connecting rod (202), and the connecting plate (205) is movably connected to the middle cover (103) via a bearing.

5. A booster cylinder with hydraulic oil backflow prevention according to claim 4, characterized in that: The connecting plate (205) is movably connected to the oil guide groove (109), and a connecting pad (206) is bonded to the outer side of the connecting plate (205).

6. The booster cylinder with hydraulic oil backflow prevention according to claim 1, characterized in that: A protective cover (3) is arranged on the outside of the oil level sensing rod (110), and two ends of the protective cover (3) are respectively connected to a fixing plate (301), and a limiting bolt (302) penetrates the interior of the fixing plate (301).

7. The booster cylinder with hydraulic oil backflow prevention according to claim 1, characterized in that: A limiting groove (303) is provided on one side of the oil storage cylinder (108) close to the limiting bolt (302), and the limiting bolt (302) is in contact with the limiting groove (303).

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