CN216430123U - External displacement detection hydraulic cylinder - Google Patents
External displacement detection hydraulic cylinder Download PDFInfo
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- CN216430123U CN216430123U CN202122948635.2U CN202122948635U CN216430123U CN 216430123 U CN216430123 U CN 216430123U CN 202122948635 U CN202122948635 U CN 202122948635U CN 216430123 U CN216430123 U CN 216430123U
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Abstract
The utility model discloses an external displacement detection hydraulic cylinder, which comprises a hydraulic cylinder provided with a cylinder barrel, a piston rod and a rod head, wherein a fixed barrel is fixedly connected outside the cylinder barrel, the rear end of a sliding rod is arranged in the fixed barrel, the sliding rod is provided with an inner hole, the rear end of the sliding rod is fixedly connected with a magnetic ring, the rear end of the fixed barrel is connected with a screw sleeve, a sensor is fixed in the screw sleeve, a measuring rod at the front end of the sensor passes through the magnetic ring and is arranged in the inner hole of the sliding rod, and the rear end of the sensor is connected with a cable; the front end of the sliding rod is fixedly connected with the rod head through a connecting rod. The utility model discloses not only be convenient for make, install, and do not influence the leakproofness of pneumatic cylinder to applicable in all types of pneumatic cylinders, application range is wide.
Description
Technical Field
The utility model relates to a displacement detection pneumatic cylinder, especially an external displacement detection pneumatic cylinder.
Background
The existing displacement detection hydraulic cylinder is mostly built-in, and displacement detection elements are arranged in a cylinder barrel or a piston rod, so that sealing elements in the cylinder are required to be added, the manufacturing and installation difficulty is increased, and the sealing property of the hydraulic cylinder is influenced; and due to structural limitation, some hydraulic cylinders such as a multi-stage cylinder are difficult to install displacement detection elements in the cylinder, and the application range is limited.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned not enough that prior art exists, provide an external displacement detection pneumatic cylinder, it not only is convenient for make, install, and does not influence the leakproofness of pneumatic cylinder to applicable in all types of pneumatic cylinders, application range is wide.
In order to achieve the above object, the external displacement detecting hydraulic cylinder of the present invention comprises a hydraulic cylinder having a cylinder barrel, a piston rod and a rod head, and is characterized in that a fixed cylinder is fixedly connected to the outside of the cylinder barrel, the rear end of a sliding rod is disposed in the fixed cylinder, the sliding rod has an inner hole, the rear end of the sliding rod is fixedly connected to a magnetic ring, the rear end of the fixed cylinder is connected to a threaded sleeve, a sensor is fixed in the threaded sleeve, a measuring rod at the front end of the sensor passes through the magnetic ring and is disposed in the inner hole of the sliding rod, and the rear end of the sensor is connected to a cable; the front end of the sliding rod is fixedly connected with the rod head through a connecting rod.
When the piston rod of the utility model is stretched, the connecting rod drives the sliding rod to move synchronously, and the magnetic ring and the sensor are matched to detect the displacement; the detection element is arranged outside the cylinder barrel, so that the hydraulic cylinder is convenient to manufacture and install, does not influence the sealing property of the hydraulic cylinder, can be suitable for all types of hydraulic cylinders, such as multi-stage cylinders, and has a wide application range;
as a further improvement of the utility model, the front end of the sliding rod is connected with a connecting nut, the connecting nut is connected with a joint bearing, one end of the connecting rod is fixedly provided with a ball head arranged in the joint bearing, and the other end of the connecting rod is fixedly connected with the rod head through threads; the eccentric load can be prevented, and the smoothness of the movement of the sliding rod is ensured;
as a further improvement of the utility model, the rear end of the inner hole of the fixed cylinder is provided with a flexible positioning ring; the magnetic ring can be prevented from bearing impact;
as a further improvement of the utility model, the sensor is fixed in the screw sleeve through an inner circle step of the screw sleeve and a screw plug connected with the screw sleeve, the rear end of the screw plug is fixedly connected with a sealing joint, the cable passes through the screw plug and the sealing joint, and a sealing ring is arranged in the sealing joint; the sensor is convenient to assemble and disassemble, impurities are prevented from entering, and the sensor is protected;
as a further improvement of the utility model, the inner circle at the front end of the fixed cylinder is provided with a front supporting ring through a ring groove, and the outer circle at the rear end of the sliding rod is provided with a rear supporting ring; the straightness and detection precision of the movement of the sliding rod are improved;
to sum up, the utility model discloses not only be convenient for make, install, and do not influence the leakproofness of pneumatic cylinder to applicable in all types of pneumatic cylinders, application range is wide.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a front view of the detecting device of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, the external displacement detecting hydraulic cylinder of this embodiment includes a hydraulic cylinder having a cylinder barrel 1, a piston rod 2 and a rod head 3, a fixed cylinder 4 is fixedly connected to the outside of the cylinder barrel 1 through a hoop and a set screw, the rear end of a sliding rod 5 is disposed in the fixed cylinder 4, a front support ring 6 is disposed on the front end inner circle of the fixed cylinder 4 through a ring groove, a flexible positioning ring 15 is disposed on the rear end of the inner hole of the fixed cylinder 4, a rear support ring 7 is disposed on the rear end outer circle of the sliding rod 5, the sliding rod 5 is provided with an inner hole, a magnetic ring 8 is fixedly connected to the rear end of the sliding rod 5, a screw sleeve 9 is connected to the rear end of the fixed cylinder 4 through a screw thread, a sensor 10 is fixed in the screw sleeve 9 through an inner circle step of the screw sleeve 9 and a screw plug 11 connected to the screw sleeve 9, a seal joint 12 is fixedly connected to the rear end of the screw plug 11 through a screw thread, a cable 13 at the rear end of the sensor 10 passes through the screw plug 11 and the seal joint 12, a seal ring 19 is disposed in the seal joint 12, a measuring rod 14 at the front end of the sensor 10 penetrates through the magnetic ring 8 and is arranged in an inner hole of the sliding rod 5; the front end of the sliding rod 5 is connected with a connecting nut 16 through threads, the connecting nut 16 is connected with a joint bearing 17 through threads, one end of a connecting rod 18 is fixedly provided with a ball head arranged in the joint bearing 17, and the other end of the connecting rod 18 is fixedly connected with the rod head 3 through threads.
When the piston rod 2 of the utility model is stretched, the connecting rod 18 drives the sliding rod 5 to move synchronously, and the magnetic ring 8 and the sensor 10 are matched to detect the displacement; the detection element is arranged outside the cylinder barrel 1, so that the detection element is convenient to manufacture and install, does not influence the sealing property of the hydraulic cylinder, can be suitable for all types of hydraulic cylinders, such as multi-stage cylinders, and has a wide application range; through the matching of the ball head of the connecting rod 18 and the joint bearing 17, the connecting rod 18 can rotate to prevent unbalance loading, and the smoothness of the movement of the sliding rod is ensured; the flexible positioning ring 15 can prevent the magnetic ring 8 from bearing impact; the screw sleeve 9, the screw plug 11 and the sealing joint 12 are convenient for mounting and dismounting the sensor, prevent impurities from entering and protect the sensor; the front support ring 6 and the rear support ring 7 improve the straightness and detection accuracy of the movement of the slide bar.
Claims (5)
1. An external displacement detection hydraulic cylinder comprises a hydraulic cylinder provided with a cylinder barrel, a piston rod and a rod head, and is characterized in that a fixed cylinder is fixedly connected outside the cylinder barrel, the rear end of a sliding rod is arranged in the fixed cylinder, the sliding rod is provided with an inner hole, the rear end of the sliding rod is fixedly connected with a magnetic ring, the rear end of the fixed cylinder is connected with a threaded sleeve, a sensor is fixed in the threaded sleeve, a measuring rod at the front end of the sensor penetrates through the magnetic ring and is arranged in the inner hole of the sliding rod, and the rear end of the sensor is connected with a cable; the front end of the sliding rod is fixedly connected with the rod head through a connecting rod.
2. The external displacement detecting hydraulic cylinder according to claim 1, wherein the front end of the sliding rod is connected with a connecting nut, the connecting nut is connected with a joint bearing, one end of the connecting rod is fixedly provided with a ball head arranged in the joint bearing, and the other end of the connecting rod is fixedly connected with the rod head through threads.
3. The external displacement sensing hydraulic cylinder as claimed in claim 1 or 2, wherein the rear end of the inner hole of the fixed cylinder is provided with a flexible positioning ring.
4. The external displacement detecting hydraulic cylinder according to claim 3, wherein the sensor is fixed in the screw sleeve by an inner circular step of the screw sleeve and a screw plug connected with the screw sleeve, a sealing joint is fixedly connected with the rear end of the screw plug, the cable passes through the screw plug and the sealing joint, and a sealing ring is arranged in the sealing joint.
5. The external displacement sensing hydraulic cylinder as defined in claim 4, wherein a front support ring is provided at an inner circumference of the front end of the fixed cylinder through a ring groove, and a rear support ring is provided at an outer circumference of the rear end of the sliding rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122948635.2U CN216430123U (en) | 2021-11-29 | 2021-11-29 | External displacement detection hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122948635.2U CN216430123U (en) | 2021-11-29 | 2021-11-29 | External displacement detection hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216430123U true CN216430123U (en) | 2022-05-03 |
Family
ID=81341864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122948635.2U Active CN216430123U (en) | 2021-11-29 | 2021-11-29 | External displacement detection hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216430123U (en) |
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2021
- 2021-11-29 CN CN202122948635.2U patent/CN216430123U/en active Active
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