Telescopic pin oil cylinder structure

Abstract

The utility model provides a telescopic pin oil cylinder structure which is simple in structure, can determine whether a positioning pin retracts in place or not in the operation process, effectively avoids the risk of tool collision in the machining process, and comprises an oil cylinder body, a piston rod is arranged in the oil cylinder body, and the positioning pin is arranged at the end of the piston rod. The oil cylinder is characterized in that the piston rod is provided with a piston ring groove, the upper end of the oil cylinder body is provided with an upper end gas detection hole corresponding to the piston rod, and the middle of the oil cylinder body is provided with a lower end gas detection hole corresponding to the piston rod.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a telescopic pin oil cylinder structure. Background Art

[0002] When processing the battery tray, a telescopic pin cylinder is used. The existing telescopic pin cylinder structure is shown in Figure 1 , a standard linear cylinder is used to directly drive the positioning pin 1 to retract and retract. The structure is not compact enough, and it is impossible to confirm whether the positioning pin is retracted into place. The positioning pin may occasionally not retract into place, and there is a risk of collision with the tool during processing. Summary of the invention

[0003] The utility model aims to provide a telescopic pin oil cylinder structure, which has a simple structure and can determine whether the positioning pin is retracted into place during operation, thereby effectively avoiding the risk of tool collision during processing.

[0004] The technical solution of the utility model is as follows:

[0005] A telescopic pin cylinder structure comprises a cylinder body, a piston rod is arranged in the cylinder body, and a positioning pin is arranged at the end of the piston rod. The characteristic is that a piston ring groove is arranged on the piston rod, an upper end air inspection hole is arranged at the upper end of the cylinder body corresponding to the piston rod, and a lower end air inspection hole is arranged at the middle part of the cylinder body corresponding to the piston rod.

[0006] Its further feature is that the locating pin is threadedly connected to the piston rod; the cylinder body includes a cylinder body, a piston cavity is arranged in the cylinder body, one end of the piston rod is arranged in the piston cavity, and an end cover is arranged on the cylinder body; a sealing ring is arranged at the connection between the piston rod, the end cover and the cylinder body.

[0007] By adopting the above technical scheme, a piston ring groove is arranged on the piston rod, an upper air inspection hole is arranged at the upper end of the cylinder body corresponding to the piston rod, a lower air inspection hole is arranged at the middle part of the cylinder body corresponding to the piston rod, oil enters the rodless cavity of the cylinder, the piston rod extends out together with the locating pin, the piston ring groove reaches the cylinder body and rises to the position of the air inspection hole, the inspection cylinder rises to the position, oil enters the rod cavity of the cylinder, the piston rod locating pin retracts, the piston ring groove reaches the cylinder body and retracts to the position of the air inspection hole, the inspection cylinder retracts to the position, and during the operation, it can be determined whether the locating pin is retracted into place, thereby effectively avoiding the risk of tool collision during processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the existing telescopic pin cylinder structure;

[0009] Figure 2 A schematic diagram of the structure of a telescopic pin oil cylinder of the utility model. DETAILED DESCRIPTION

[0010] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0011] See Figure 2 A telescopic pin cylinder structure comprises a cylinder body 1, a piston rod 2 is arranged in the cylinder body 1, a locating pin 3 is arranged at the end of the piston rod 2, a piston ring groove 4 is arranged on the piston rod 2, an upper end air inspection hole 5 is arranged at the upper end of the cylinder body 1 corresponding to the piston rod, and a lower end air inspection hole 6 is arranged at the middle part of the cylinder body 1 corresponding to the piston rod 2. Oil enters the rodless cavity of the cylinder, the piston rod extends out together with the locating pin, the piston ring groove reaches the cylinder body and rises to the position of the air inspection hole, the detection cylinder rises to the position, oil enters the rod cavity of the cylinder, the piston rod locating pin retracts, the piston ring groove reaches the cylinder body and retracts to the position of the air inspection hole, and the detection cylinder retracts to the position. During the operation, it can be determined whether the locating pin is retracted to the position, which effectively avoids the risk of tool collision during processing.

[0012] The positioning pin 3 is threadedly connected to the piston rod 2, so that the positioning pin can be easily replaced after being worn.

[0013] The oil cylinder body 1 comprises an oil cylinder body 7, a piston cavity 8 is arranged in the oil cylinder body 7, one end of the piston rod 2 is arranged in the piston cavity 8, and an end cover 9 is arranged on the oil cylinder body 7. Since the end cover can be removed, it is convenient for simple installation of the piston rod and inspection and cleaning of the piston cavity.

[0014] Sealing rings 10 are respectively arranged at the connection points between the piston rod 2, the end cover 9 and the oil cylinder body 7, so as to ensure the sealing performance of the entire oil cylinder.

[0015] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the utility model.

Claims

1. A telescopic pin oil cylinder structure, comprising an oil cylinder body (1), a piston rod (2) arranged in the oil cylinder body (1), a positioning pin (3) arranged at the end of the piston rod (2), characterized in that: A piston ring groove (4) is provided on the piston rod (2), an upper end air inspection hole (5) is provided at the upper end of the oil cylinder body (1) corresponding to the piston rod (2), and a lower end air inspection hole (6) is provided at the middle of the oil cylinder body (1) corresponding to the piston rod (2).

2. The telescopic pin cylinder structure according to claim 1, characterized in that: The positioning pin (3) is threadedly connected to the piston rod (2).

3. The telescopic pin cylinder structure according to claim 1, characterized in that: The oil cylinder body (1) comprises an oil cylinder body (7), a piston chamber (8) is arranged in the oil cylinder body (7), one end of the piston rod (2) is arranged in the piston chamber (8), and an end cover (9) is arranged on the oil cylinder body (7).

4. The telescopic pin cylinder structure according to claim 3, characterized in that: A sealing ring (10) is provided at the connection between the piston rod (2), the end cover (9) and the cylinder body (7).

Images