CN217207101U - Propulsion oil cylinder - Google Patents
Propulsion oil cylinder Download PDFInfo
- Publication number
- CN217207101U CN217207101U CN202220233985.2U CN202220233985U CN217207101U CN 217207101 U CN217207101 U CN 217207101U CN 202220233985 U CN202220233985 U CN 202220233985U CN 217207101 U CN217207101 U CN 217207101U
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Abstract
The utility model discloses a propulsion oil cylinder, which comprises a cylinder bottom, a cylinder barrel, a guide sleeve, a piston rod, a piston, a rod cavity oil port and a rodless cavity oil port, wherein a rear ejector block is connected with the cylinder bottom through a rear screw, and a ball head and a spherical groove which are matched with each other are arranged on the rear ejector block and the cylinder bottom; the front end of the piston rod is fixedly connected with a front round top block through a front screw, the front round top block and the front end of the piston rod are provided with a ball head and a spherical groove which are matched, the front round top block is fixedly connected with the front top block, the front end of the piston rod is provided with a ring groove, a snap ring is connected to the piston rod through a convex ring arranged in the ring groove, and a spring ring is sleeved outside the front round top block and the piston rod between the snap ring and the front top block; the utility model discloses can avoid the piston rod to bear radial load to prevent that cylinder and piston rod from pulling, guarantee the normal work of hydro-cylinder.
Description
Technical Field
The utility model relates to a thrust cylinder, especially a thrust cylinder for shield constructs machine.
Background
The existing propulsion oil cylinder for the shield machine is characterized in that the cylinder bottom of the existing propulsion oil cylinder is connected with a top block through a rear screw, and the top block and the cylinder bottom are provided with a ball head and a spherical groove which are matched with each other; however, the front end of the piston rod is in rigid contact with the tiles in the tunnel, and the piston rod is easy to be subjected to radial load, so that the cylinder barrel and the piston rod are damaged by pulling, and the normal work of the oil cylinder is influenced.
Disclosure of Invention
The utility model aims at the above-mentioned not enough that prior art exists, provide a propulsion cylinder, it can avoid the piston rod to bear radial load to prevent that cylinder and piston rod from pulling, guarantee the normal work of hydro-cylinder.
In order to achieve the purpose, the utility model discloses a propulsion oil cylinder, including cylinder bottom, cylinder, uide bushing, piston rod, piston, have pole chamber hydraulic fluid port and no pole chamber hydraulic fluid port, the back kicking block passes through the back screw and links to each other with the cylinder bottom, back kicking block and cylinder bottom are equipped with matched bulb and spherical recess; the front end of the piston rod is fixedly connected with a front round top block through a front screw, the front round top block and the front end of the piston rod are provided with a ball head and a spherical groove which are matched, the front round top block is fixedly connected with the front top block, the front end of the piston rod is provided with a ring groove, a snap ring is connected to the piston rod through a convex ring arranged in the ring groove, and a spring ring is sleeved outside the front round top block and the piston rod between the snap ring and the front top block.
When the front jacking block is used, the front jacking block is in contact with tiles in a tunnel, once the front jacking block is subjected to the action of radial load, the front jacking block and the front jacking block can rotate within a certain range through the ball head and the spherical groove, which are matched with the front end of the piston rod, so that the piston rod can be prevented from bearing the radial load, the cylinder barrel and the piston rod are prevented from being pulled, and the normal work of the oil cylinder is ensured; when the front jacking block is separated from the tile, the spring ring can automatically keep the front jacking block horizontal, so that the normal operation of next jacking operation is facilitated;
as a further improvement of the utility model, the head of the rear screw is provided with a spherical surface, and the rear ejector block is provided with a spherical concave surface matched with the spherical surface; the head of the front screw is provided with a spherical surface, and the front dome block is provided with a spherical concave surface matched with the spherical surface; the rotation of the rear jacking block and the jacking block can be ensured, the contact gaps between the rear screw and the rear jacking block and between the front screw and the front dome block can be eliminated, the impact between the rear screw and the rear jacking block and between the front screw and the front dome block can be prevented, the jacking operation is facilitated, and the service life is prolonged;
as a further improvement of the utility model, the front end face of the front top block is fixedly connected with a flexible front cushion block; the impact born by the piston rod can be reduced;
to sum up, the utility model discloses can avoid the piston rod to bear radial load to prevent that cylinder and piston rod from pulling, guarantee the normal work of hydro-cylinder.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a top view 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 and 2, the propulsion cylinder of this embodiment includes a cylinder bottom 1, a cylinder barrel 2, a guide sleeve 3, a piston rod 4, a piston 5, a rod cavity oil port 6, and a rodless cavity oil port 7, a rear ejector block 8 is connected to the cylinder bottom 1 through a rear screw 9, the rear ejector block 8 and the cylinder bottom 1 are provided with a ball head 8a and a spherical groove which are matched with each other, the head of the rear screw 9 is provided with a spherical surface 9a, and the rear ejector block 8 is provided with a spherical concave surface matched with the spherical surface 9 a; the front end of the piston rod 4 is fixedly connected with a front dome block 11 through a front screw 10, the front dome block 11 and the front end of the piston rod are provided with a ball head 11a and a spherical groove which are matched, the head of the front screw 10 is provided with a spherical surface 10a, the front dome block 11 is provided with a spherical concave surface matched with the spherical surface 10a, the front dome block 11 and a front top block 12 are fixedly connected through screws, and the front end surface of the front top block 12 is fixedly connected with a flexible front cushion block 13 made of nylon; the front end of the piston rod 4 is provided with a ring groove, the snap ring 14 is connected to the piston rod 4 through a convex ring 14a arranged in the ring groove, and a spring ring 15 is sleeved outside the front round ejecting block 11 and the piston rod 4 between the snap ring 14 and the front ejecting block 12.
When the front cushion block 13 is used, the front cushion block 13 is in contact with tiles in a tunnel, once the front cushion block 13 and the front top block 12 are under the action of radial load, the front top block 11 and the front top block 12 can rotate within a certain range through the ball head 11a and the spherical groove, which are matched with the front end of the piston rod 4, so that the piston rod can be prevented from bearing the radial load, the cylinder barrel 2 and the piston rod 4 are prevented from being pulled and damaged, and the normal work of the oil cylinder is ensured; when the front cushion block 13 is separated from the tile, the spring ring 15 can enable the front jacking block 12 to automatically keep horizontal, so that the normal operation of the next jacking operation is facilitated;
the head of the rear screw 9 is matched with the rear ejector block 8 and the head of the front screw 10 is matched with the front round ejector block 11 through the spherical surface and the spherical concave surface, so that the rotation of the rear ejector block 8 and the front ejector block 12 can be ensured, the contact gap between the rear screw 9 and the rear ejector block 8 and between the front screw 10 and the front round top block 11 can be eliminated, the impact between the rear screw 9 and the rear ejector block 8 is prevented, the pushing operation is facilitated, and the service life is prolonged; the flexible front cushion block 13 can reduce the impact born by the piston rod.
Claims (3)
1. A propulsion oil cylinder comprises a cylinder bottom, a cylinder barrel, a guide sleeve, a piston rod, a piston, a rod cavity oil port and a rodless cavity oil port, wherein a rear ejector block is connected with the cylinder bottom through a rear screw, and a ball head and a spherical groove which are matched with each other are arranged on the rear ejector block and the cylinder bottom; the front end of the piston rod is fixedly connected with a front round top block through a front screw, the front round top block and the front end of the piston rod are provided with a ball head and a spherical groove which are matched, the front round top block is fixedly connected with the front top block, the front end of the piston rod is provided with a ring groove, a snap ring is connected to the piston rod through a convex ring arranged in the ring groove, and a spring ring is sleeved outside the front round top block and the piston rod between the snap ring and the front top block.
2. A thrust cylinder as claimed in claim 1, wherein the head of said rear screw has a spherical surface, and the rear top block has a spherical concave surface to which said spherical surface is fitted; the head of the front screw is provided with a spherical surface, and the front dome block is provided with a spherical concave surface matched with the spherical surface.
3. A thrust cylinder according to claim 1 or claim 2, wherein the front end face of the front thrust block is fixedly connected to a flexible front pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220233985.2U CN217207101U (en) | 2022-01-28 | 2022-01-28 | Propulsion oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220233985.2U CN217207101U (en) | 2022-01-28 | 2022-01-28 | Propulsion oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217207101U true CN217207101U (en) | 2022-08-16 |
Family
ID=82794660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220233985.2U Active CN217207101U (en) | 2022-01-28 | 2022-01-28 | Propulsion oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217207101U (en) |
-
2022
- 2022-01-28 CN CN202220233985.2U patent/CN217207101U/en active Active
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