Hydraulic cylinder barrel

Abstract

The hydraulic cylinder barrel comprises a base of a cylindrical structure, a barrel body is coaxially welded to the top of the base, an annular groove is coaxially formed in the top face of the base, the diameter of the inner circle of the annular groove is equal to that of the outer circle of the barrel body, a reinforcing ring is coaxially placed in the annular groove, and the inner side face of the reinforcing ring abuts against the outer side face of the barrel body; the outer side face of the reinforcing ring abuts against the inner wall of the outer side of the annular groove, and an avoiding groove is formed in the bottom of the inner side face of the reinforcing ring and used for avoiding craters formed at the welding joint of the base and the barrel. According to the scheme, the sealing effect can be improved, and the stability of the connecting structure is improved on the basis.

Description

Technical Field

[0001] This application relates to the field of hydraulic cylinder manufacturing and processing technology, and in particular to a hydraulic cylinder barrel. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or oscillating motion). A hydraulic cylinder basically consists of a cylinder barrel and cylinder head, a piston and piston rod, a sealing device, a cushioning device, and an venting device.

[0003] The cylinder consists of a cylinder body and a base. The cylinder body and base are typically connected by welding, with an additional sealing ring welded at the joint for better sealing. However, this connection structure is unstable and prone to weld seams, thus requiring improvement. Utility Model Content

[0004] To address the shortcomings of the prior art, this application provides a hydraulic cylinder that can improve the sealing effect and, on this basis, enhance the stability of the connection structure.

[0005] To achieve the above objectives, the present invention employs the following technology:

[0006] A hydraulic cylinder includes a base, which is cylindrical in structure. A cylinder body is coaxially welded to the top of the base. An annular groove is coaxially formed on the top surface of the base. The diameter of the inner circle of the annular groove is equal to the diameter of the outer circle of the cylinder body. A reinforcing ring is coaxially placed in the annular groove. The inner side of the reinforcing ring abuts against the outer side of the cylinder body, and the outer side of the reinforcing ring abuts against the inner wall of the outer side of the annular groove. An avoidance groove is formed at the bottom of the inner side of the reinforcing ring to avoid weld scars formed at the welding connection between the base and the cylinder body.

[0007] The beneficial effects of this utility model are as follows: Based on the welding connection between the cylinder and the base, the inner side of the reinforcing ring is closely fitted with the outer side of the cylinder, which further limits the position of the cylinder on the base, avoids the horizontal offset between the axis of the cylinder and the axis of the base, and prevents damage to the connection structure between the two, making the connection structure between the cylinder and the base more stable and improving the sealing effect. Attached Figure Description

[0008] The accompanying drawings described herein are merely illustrative of selected embodiments, not all possible implementations, and are not intended to limit the scope of this invention.

[0009] Figure 1 This is a cross-sectional schematic diagram of an embodiment of this application.

[0010] Figure 2 This is a cross-sectional schematic diagram of an embodiment of this application. Detailed Implementation

[0011] To make the objectives, technical solutions and advantages of the present utility model clearer, the implementation methods of the present utility model will be described in detail below with reference to the accompanying drawings. However, the embodiments described in the present utility model are only some embodiments of the present utility model, and not all embodiments.

[0012] This application provides a hydraulic cylinder barrel, such as... Figure 1 As shown, the device includes a base 1, which is a cylindrical structure. A cylindrical body 2 is coaxially welded to the top of the base 1. An annular groove 3 is coaxially formed on the top surface of the base 1. The diameter of the inner circle of the annular groove 3 is equal to the diameter of the outer circle of the cylindrical body 2. A reinforcing ring 4 is coaxially placed in the annular groove 3. The inner side of the reinforcing ring 4 fits against the outer side of the cylindrical body 2, and the outer side of the reinforcing ring 4 fits against the inner wall of the outer side of the annular groove 3. An avoidance groove 41 is formed at the bottom of the inner side of the reinforcing ring 4 to avoid weld scars formed at the welding connection between the base 1 and the cylindrical body 2, so as to avoid damage to the connection structure between the base 1 and the cylindrical body 2 during the process of installing the reinforcing ring 4 into the annular groove 3.

[0013] As can be seen from the above structural design, the bottom of the reinforcing ring 4 fits tightly with the annular groove 3, and the reinforcing ring 4 always remains coaxial with the base 1 within the confinement of the annular groove 3. Furthermore, based on the welded connection between the cylinder 2 and the base 1, the inner side of the reinforcing ring 4 fits tightly with the outer side of the cylinder 2, further confining the position of the cylinder 2 on the base 1. This prevents the axis of the cylinder 2 from shifting horizontally with the axis of the base 1, thus avoiding damage to the connection structure between them. This makes the connection structure between the cylinder 2 and the base 1 more stable and improves the sealing effect.

[0014] Preferred, such as Figure 2 As shown, the junction of the reinforcing ring 4 and the cylinder 2 is connected by welding, which improves the tightness of the connection between the inner side of the reinforcing ring 4 and the outer side of the cylinder 2.

[0015] Preferred, such as Figure 2 As shown, the reinforcing ring 4 has a first bevel 42 at the connection with the cylinder 2. The first bevel 42 is used for butt welding, which further improves the tightness of the connection between the inner side of the reinforcing ring 4 and the outer side of the cylinder 2.

[0016] Preferred, such as Figure 2 As shown, the junction of the reinforcing ring 4 and the annular groove 3 is connected by welding, which improves the tightness of the connection between the outer side of the reinforcing ring 4 and the inner wall of the outer side of the annular groove 3.

[0017] Preferred, such as Figure 2As shown, the annular groove 3 has a second bevel 31 at the connection with the reinforcing ring 4. The second bevel 31 is used for butt welding, which further improves the tightness of the connection between the outer side of the reinforcing ring 4 and the inner wall of the outer side of the annular groove 3.

[0018] Preferred, such as Figure 2 As shown, a chamfer is formed on the top of the inner side of the annular groove 3, and a tapered hole is coaxially opened on the inner side of the bottom of the cylinder 2. The tapered surface of the tapered hole is used to fit with the chamfer, which improves the coaxial accuracy of the cylinder 2 and the base 1, further avoids the horizontal offset of the axis of the cylinder 2 and the axis of the base 1, and strengthens the connection structure between the cylinder 2 and the base 1.

[0019] Preferred, such as Figure 2 As shown, there is a predetermined distance in the vertical direction between the bottom end of the cylinder 2 and the bottom end of the chamfer, which is used to form a triangular welding groove 5 to connect the welding material, further improving the tightness of the connection between the cylinder 2 and the base 1.

[0020] During installation, the conical surface and chamfer at the bottom of the cylinder 2 are first aligned to ensure the cylinder 2 is stably and coaxially placed on top of the base 1, and then welded together using the weld groove 5. Next, the reinforcing ring 4 is placed in the annular groove 3, and the inner side of the reinforcing ring 4 is welded to the inner wall of the outer side of the cylinder 2 using the first bevel 42. The outer side of the reinforcing ring 4 is welded to the inner wall of the outer side of the annular groove 3 using the second bevel 31.

[0021] In application, the above description is only a preferred embodiment of this application and is not intended to limit this application. Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application.

Claims

1. A hydraulic cylinder barrel, characterized in that, The base (1) is cylindrical. A cylindrical body (2) is coaxially welded to the top of the base (1). An annular groove (3) is coaxially opened on the top surface of the base (1). The diameter of the inner circle of the annular groove (3) is equal to the diameter of the outer circle of the cylindrical body (2). A reinforcing ring (4) is coaxially placed in the annular groove (3). The inner side of the reinforcing ring (4) abuts against the outer side of the cylindrical body (2). The outer side of the reinforcing ring (4) abuts against the inner wall of the outer side of the annular groove (3). A clearance groove (41) is opened at the bottom of the inner side of the reinforcing ring (4) to avoid the weld scar formed at the welding connection between the base (1) and the cylindrical body (2).

2. A hydraulic cylinder barrel according to claim 1, characterized in that, The reinforcing ring (4) and the cylinder (2) are connected by welding at the junction.

3. A hydraulic cylinder barrel according to claim 2, characterized in that, The reinforcing ring (4) has a first bevel (42) at the connection with the cylinder (2), and the first bevel (42) is used for butt welding.

4. A hydraulic cylinder barrel according to claim 1, characterized in that, The junction of the reinforcing ring (4) and the annular groove (3) is connected by welding.

5. A hydraulic cylinder barrel according to claim 4, characterized in that, The annular groove (3) has a second bevel (31) at the connection with the reinforcing ring (4), and the second bevel (31) is used for butt welding.

6. A hydraulic cylinder barrel according to claim 1, characterized in that, The top of the inner side of the annular groove (3) is chamfered, and the inner side of the bottom of the cylinder (2) is coaxially provided with a tapered hole, the tapered surface of which is used to fit with the chamfer.

7. A hydraulic cylinder barrel according to claim 6, characterized in that, There is a predetermined distance in the vertical direction between the bottom end of the cylinder (2) and the bottom end of the chamfer, which is used to form a triangular weld groove (5) for welding.

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