Buffering oil cylinder

Abstract

The utility model relates to the technical field of oil cylinders, in particular to a buffering oil cylinder which comprises a cylinder barrel, and a piston rod is connected to the inner side of the cylinder barrel in a sliding mode. A rod cavity buffer groove is formed in the inner side of the cylinder cover, and a rod cavity buffer head is correspondingly installed on the outer side of the piston rod; a rodless cavity buffer groove is formed in the inner side of the cylinder bottom, and a rodless cavity buffer head is correspondingly installed on the outer side of the piston rod; the two ends of the cylinder barrel are connected with the cylinder cover and the cylinder bottom respectively, oil through holes are formed in the inner side of the cylinder cover and the inner side of the cylinder bottom and communicated with the interior of the cylinder barrel, adjusting screws are installed on the surface of the cylinder cover and the surface of the cylinder bottom, and the adjusting screws can adjust the cross section area of the oil through holes. The buffer time can be controlled while the buffer effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a buffer oil cylinder. Background Art

[0002] The hydraulic cylinder is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference on both sides. The hydraulic cylinder is basically composed of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a buffer device and an exhaust device.

[0003] However, the existing oil cylinder can only buffer on one side. The piston moves back and forth in the cylinder body under the action of oil pressure. Each time it moves to the end position, it will collide with the inner side of the cylinder front cover or the cylinder rear cover at a faster speed, which can easily cause the piston, the cylinder front cover and the cylinder rear cover to be damaged, affecting the service life of the cylinder. Therefore, a buffer cylinder is needed. Utility Model Content

[0004] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a buffer oil cylinder to solve the problem that the existing oil cylinder can only buffer on one side, which easily causes damage to the piston, the front cover and the rear cover of the oil cylinder, thus affecting the service life of the oil cylinder.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A buffer oil cylinder comprises a cylinder barrel, the inner side of which is slidably connected with a piston rod; a cylinder head, the inner side of which is provided with a rod cavity buffer groove, and the outer side of which is correspondingly provided with a rod cavity buffer head; a cylinder bottom, the inner side of which is provided with a rodless cavity buffer groove, and the outer side of which is correspondingly provided with a rodless cavity buffer head; the two ends of the cylinder barrel are respectively connected with the cylinder head and the cylinder bottom, the inner sides of the cylinder head and the cylinder bottom are provided with oil holes, the oil holes are connected with the inside of the cylinder barrel, and the surfaces of the cylinder head and the cylinder bottom are provided with adjusting screws, and the adjusting screws can adjust the cross-sectional area of ​​the oil holes.

[0007] In this way, when oil is injected into the oil port of the rodless chamber of the oil cylinder, the high-pressure oil pushes the piston rod to move to the right. A rod chamber buffer head is provided at the right end of the piston rod, and a rod chamber buffer groove is provided at the cylinder head. When the rod chamber buffer head enters the rod chamber buffer groove under the push of the hydraulic oil, the oil chamber area suddenly shrinks, and the gap between the rod chamber buffer groove and the rod chamber buffer head is very small, so that the return oil of the hydraulic cylinder has a throttling effect and generates back pressure, thereby playing a buffering role; similarly, when oil is injected into the oil port of the rod chamber of the oil cylinder, the high-pressure oil pushes the piston rod to move to the left, and the rodless chamber buffer groove and the rodless chamber buffer head can also play a buffering role;

[0008] During the buffering process, the adjusting screw is rotated to adjust the cross-sectional area of ​​the oil hole to achieve the effect of adjusting the buffering flow, thereby improving the buffering effect and controlling the buffering time.

[0009] Furthermore, the cylinder cover and the cylinder bottom surface are both installed with a buffer valve, so that when the pressure reaches the set pressure, the buffer valve opens and the oil flows back to the rodless chamber, which plays a role in protecting the oil cylinder and increasing the reliability of the equipment.

[0010] Furthermore, guide belts are installed at both ends of the piston rod, thereby ensuring the stability of the piston rod during sliding.

[0011] Furthermore, a sealing ring is installed at the end of the piston rod, thereby maintaining good sealing performance.

[0012] Furthermore, a dust ring is installed at the end of the piston rod, thereby preventing sand, water and pollutants from entering the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a buffer oil cylinder of the utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of an embodiment of a buffer oil cylinder of the utility model (with oil entering the rod chamber);

[0015] Figure 3 This is a cross-sectional structural diagram of an embodiment of a buffer oil cylinder of the utility model (in a state where oil is not flowing into the rod cavity);

[0016] Figure 4 This is a cross-sectional structural diagram of an embodiment of a buffer oil cylinder of the utility model (buffer working state);

[0017] Reference numerals in the accompanying drawings of the specification:

[0018] Cylinder barrel 1, piston rod 101, guide belt 102, sealing ring 103, dust ring 104, cylinder head 2, rod chamber buffer groove 201, rod chamber buffer head 202, cylinder bottom 3, rodless chamber buffer groove 301, rodless chamber buffer head 302, oil hole 4, adjusting screw 5, buffer valve 6. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0021] Example:

[0022] like Figure 1-Figure 4 As shown, a buffer oil cylinder of the utility model comprises a cylinder barrel 1, a piston rod 101 is slidably connected to the inner side of the cylinder barrel 1; a cylinder head 2, a rod cavity buffer groove 201 is opened on the inner side of the cylinder head 2, and a rod cavity buffer head 202 is correspondingly installed on the outer side of the piston rod 101; a cylinder bottom 3, a rodless cavity buffer groove 301 is opened on the inner side of the cylinder bottom 3, and a rodless cavity buffer head 302 is correspondingly installed on the outer side of the piston rod 101;

[0023] The two ends of the cylinder barrel 1 are respectively connected to the cylinder head 2 and the cylinder bottom 3. The inner sides of the cylinder head 2 and the cylinder bottom 3 are provided with oil holes 4, which are connected to the inside of the cylinder barrel 1. Adjusting screws 5 are installed on the surfaces of the cylinder head 2 and the cylinder bottom 3. The adjusting screws 5 can adjust the cross-sectional area of ​​the oil hole 4.

[0024] In this way, when oil is injected into the oil port of the rodless chamber of the oil cylinder, the high-pressure oil pushes the piston rod 101 to move to the right, and a rod chamber buffer head 202 is provided at the right end of the piston rod 101, and a rod chamber buffer groove 201 is provided at the cylinder head 2. When the rod chamber buffer head 202 enters the rod chamber buffer groove 201 under the push of the hydraulic oil, the oil chamber area is suddenly reduced, and the gap between the rod chamber buffer groove 201 and the rod chamber buffer head 202 is very small, so that the return oil of the hydraulic cylinder has a throttling effect and generates back pressure, thereby playing a buffering role; similarly, when oil is injected into the oil port of the rod chamber of the oil cylinder, the high-pressure oil pushes the piston rod 101 to move to the left, and the rodless chamber buffer groove 301 and the rodless chamber buffer head 302 can also play a buffering role.

[0025] During the buffering process, the adjusting screw 5 is rotated to adjust the cross-sectional area of ​​the oil hole 4 to achieve the effect of adjusting the buffering flow rate, thereby improving the buffering effect and controlling the buffering time.

[0026] Buffer valves 6 are installed on the surfaces of the cylinder cover 2 and the cylinder bottom 3. When the pressure reaches the set pressure, the buffer valve 6 opens and the oil flows back to the rodless chamber, which protects the oil cylinder and increases the reliability of the equipment.

[0027] Guide belts 102 are installed at both ends of the piston rod 101, thereby ensuring the stability of the piston rod 101 during the sliding process.

[0028] A sealing ring 103 is installed at the end of the piston rod 101, thereby maintaining good sealing performance.

[0029] A dust ring 104 is installed at the end of the piston rod 101, thereby preventing sand, water and pollutants from entering the cylinder body.

[0030] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A buffer cylinder, characterized in that: include: A cylinder barrel (1), wherein a piston rod (101) is slidably connected to the inner side of the cylinder barrel (1); A cylinder cover (2), wherein a rod cavity buffer groove (201) is formed on the inner side of the cylinder cover (2), and a rod cavity buffer head (202) is correspondingly mounted on the outer side of the piston rod (101); A cylinder bottom (3), wherein a rodless cavity buffer groove (301) is formed on the inner side of the cylinder bottom (3), and a rodless cavity buffer head (302) is correspondingly mounted on the outer side of the piston rod (101); The two ends of the cylinder barrel (1) are respectively connected to the cylinder head (2) and the cylinder bottom (3); the inner sides of the cylinder head (2) and the cylinder bottom (3) are both provided with oil holes (4); the oil holes (4) are connected to the inside of the cylinder barrel (1); the surfaces of the cylinder head (2) and the cylinder bottom (3) are both provided with adjustment screws (5); the adjustment screws (5) are capable of adjusting the cross-sectional area of ​​the oil holes (4).

2. A buffer cylinder according to claim 1, characterized in that: Buffer valves (6) are installed on the surfaces of the cylinder cover (2) and the cylinder bottom (3).

3. A buffer cylinder according to claim 2, characterized in that: Guide belts (102) are installed at both ends of the piston rod (101).

4. A buffer cylinder according to claim 3, characterized in that: A sealing ring (103) is installed at the end of the piston rod (101).

5. A buffer cylinder according to claim 4, characterized in that: A dust ring (104) is installed at the end of the piston rod (101).

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