CN-224228986-U - Swing type hydraulic oil cylinder

Abstract

The utility model discloses a swinging type hydraulic cylinder which comprises a cylinder body, wherein a piston rod is arranged in the cylinder body, a limiting groove is formed in the piston rod, a limiting block is arranged in the limiting groove, the limiting block is arranged at the upper end of an output shaft, a transmission rocker is arranged at the end part of the output shaft, a cover plate a and a cover plate b are respectively arranged at two ends of the cylinder body, oil inlet holes are formed below the cover plate a and the cover plate b, a spring is arranged in the cover plate b, and the spring is sleeved outside one end of the piston rod. The utility model has the beneficial effects that the swinging angle of the output shaft is controlled by controlling the oil inlet pressure of the oil inlet holes below the cover plate a and the cover plate b, so that the working angle is adjusted, the applicability is improved, the swinging angle is limited by the spring, the spring can play a buffering role, and the piston rod is prevented from colliding with the cylinder wall.

Inventors

• WU YINGHUA
• XIAO LIANG
• ZHOU XIAOBAO
• ZHU YUAN
• SUN ZHONGXIAO
• ZHENG ZHIJIAN
• WU PEIHANG
• ZHANG WEI
• ZHAO GUANGQI
• ZHOU DAN

Assignees

• 宁波新宏液压有限公司

Dates

Publication Date

20260512

Application Date

20250522

Claims (5)

1. 1. The swing type hydraulic cylinder is characterized by comprising a cylinder body (2), wherein a piston rod (3) is arranged in the cylinder body (2), a limit groove (10) is formed in the piston rod (3), a limit block (11) is arranged in the limit groove (10), the limit block (11) is arranged at the upper end of an output shaft (6), a transmission rocker (4) is arranged at the end part of the output shaft (6), a cover plate a (1) and a cover plate b (9) are respectively arranged at the two ends of the cylinder body (2), an oil inlet hole (15) is formed in the lower parts of the cover plate a (1) and the cover plate b (9), a spring (8) is arranged in the cover plate b (9), and the spring (8) is sleeved outside one end of the piston rod (3).
2. 2. The swing type hydraulic cylinder according to claim 1, wherein a step hole is formed in the cover plate b (9), and one end of the spring (8) is located on a step of the step hole.
3. 3. The swing type hydraulic cylinder according to claim 2, wherein the cover plate a (1) and the cover plate b (9) are fixedly mounted on the cylinder body (2) through bolts.
4. 4. The swing type hydraulic cylinder according to claim 3, wherein the transmission rocker (4) is provided with a through hole (12), the end part of the piston rod (3) is provided with a groove (13), a lug (14) is arranged in the groove (13), the end part of the piston rod (3) and the lug (14) are both positioned in the through hole (12), a locking hole (16) is arranged below the transmission rocker (4), and the locking hole (16) is communicated with the through hole (12).
5. 5. The swing type hydraulic cylinder as claimed in claim 4, wherein spring gaskets (7) are arranged at two ends of the spring (8), one end of the spring gasket (7) is positioned on the step of the step hole, and the other end of the spring gasket (7) is positioned on the end face of the cylinder body (2).

Description

Swing type hydraulic oil cylinder Technical Field The utility model relates to the technical field of hydraulic cylinders, in particular to a swinging type hydraulic cylinder. Background The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion or swinging motion, has simple structure and reliable work, can avoid a speed reducing device when being used for realizing reciprocating motion, has no transmission clearance and stable motion, and is used as a power device, thus being widely applied to hydraulic systems of various machines. At present, the swing angle of an output shaft cannot be controlled by the existing hydraulic oil cylinder, namely, the working angle cannot be adjusted, so that the limitation is large, and the hydraulic oil cylinder is very inconvenient to use. Disclosure of utility model The utility model aims to overcome the defects of the prior art and provides a swinging type hydraulic cylinder. The swing type hydraulic oil cylinder comprises a cylinder body, a piston rod is arranged in the cylinder body, a limiting groove is formed in the piston rod, a limiting block is arranged in the limiting groove, the limiting block is arranged at the upper end of an output shaft, a transmission rocker is arranged at the end of the output shaft, a cover plate a and a cover plate b are respectively arranged at two ends of the cylinder body, oil inlet holes are formed below the cover plate a and the cover plate b, a spring is arranged in the cover plate b, and the spring is sleeved outside one end of the piston rod. Preferably, a step hole is formed in the cover plate b, and one end of the spring is positioned on a step of the step hole. Preferably, the cover plate a and the cover plate b are fixedly arranged on the cylinder body through bolts. Preferably, the transmission rocker is provided with a through hole, the end part of the piston rod is provided with a groove, a convex block is arranged in the groove, the end part of the piston rod and the convex block are both positioned in the through hole, and a locking hole is arranged below the transmission rocker and communicated with the through hole. Preferably, spring gaskets are arranged at two ends of the spring, one end of the spring gasket is located on a step of the step hole, and the other end of the spring gasket is located on the end face of the cylinder body. The utility model has the advantages that the swinging angle of the output shaft is controlled by controlling the oil inlet pressure of the oil inlet holes below the cover plate a and the cover plate b, the working angle is further adjusted, the applicability is improved, the swinging angle is limited by the spring, the spring can play a buffering role, and the piston rod is prevented from colliding with the cylinder wall. Drawings FIG. 1 is a schematic diagram of an explosion structure of a swing type hydraulic cylinder; FIG. 2 is a schematic cross-sectional structural view of a swing hydraulic cylinder; FIG. 3 is a schematic diagram of the principle of a swing hydraulic cylinder; FIG. 4 is a schematic diagram of a side view of a swing hydraulic cylinder; FIG. 5 is a schematic view of the structure of the position of the oil inlet; In the figure, a 1-cover plate a, a 2-cylinder body, a 3-piston rod, a 4-transmission rocker, a 5-locking screw, a 6-output shaft, a 7-spring gasket, an 8-spring, a 9-cover plate b, a 10-limiting groove, an 11-limiting block, a 12-through hole, a 13-groove, a 14-lug, a 15-oil inlet hole and a 16-locking hole are formed. Detailed Description For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision. It should be noted that like reference numerals and letters refer to