CN218347342U - High-wear-resistance ball type universal joint assembly of screw drilling tool - Google Patents
High-wear-resistance ball type universal joint assembly of screw drilling tool Download PDFInfo
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- CN218347342U CN218347342U CN202222347188.XU CN202222347188U CN218347342U CN 218347342 U CN218347342 U CN 218347342U CN 202222347188 U CN202222347188 U CN 202222347188U CN 218347342 U CN218347342 U CN 218347342U
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- movable hinge
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Abstract
The utility model discloses a high wear-resisting ball formula universal joint assembly of screw rod drilling tool mainly relates to the screw rod drilling tool field. The device comprises a connecting rod and a movable hinge, wherein the connecting rod is sleeved with the movable hinge, transmission balls are respectively arranged on two sides of one end, sleeved with the movable hinge, of the connecting rod, a positioning ball is arranged in the middle of each transmission ball, the positioning ball and the connecting rod are installed in a rotating mode, a ball seat is arranged on one side, away from the connecting rod, of each positioning ball, a cavity is arranged in the movable hinge, a low-damping spring is fixed to the bottom of each cavity, one end of the low-damping spring is connected with a piston, an L-shaped air hole is formed in the side wall, connected with the low-damping spring, of each cavity, the tail end of each air hole penetrates through the side wall of the movable hinge, and a one-way valve is arranged at the tail end of each air hole. The beneficial effects of the utility model reside in that: it can enhance the wear resistance of the device and solve the sealing problem.
Description
Technical Field
The utility model relates to a screw rod drilling tool field specifically is a high wear-resisting ball formula universal joint assembly of screw rod drilling tool.
Background
In a screw drilling tool provided with a ball type universal joint, the failure of the ball type universal joint is mainly represented by friction pair abrasion and sealing failure caused by expansion and leakage of a sealing sleeve playing a sealing role.
When the screw drill is used for complex drilling, the process effects of increasing the wear resistance of parts by using surface quenching, carburizing, nitriding and the like are not ideal. The ball type universal joint increases the axial clearance and the radial clearance after being worn, so that the torque of the screw drill is reduced, and the screw drill is scrapped after being further worn.
In the drilling process of the screw drilling tool, the temperature of lubricating oil in the sealing sleeve can be increased due to underground high temperature and relative movement of a ball type universal joint friction pair, the sealing sleeve made of rubber expands due to volume expansion after the temperature of the lubricating oil is increased, so that the sealing sleeve is broken or cracked, sealing failure is further realized, slurry enters a sealing cavity, and the abrasion and damage of the universal joint are accelerated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high wear-resisting ball formula universal joint assembly of screw rod drilling tool, it can strengthen the wearability of device and solve sealed problem.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
the main structure comprises a connecting rod and a movable hinge, the connecting rod is sleeved with the movable hinge, transmission balls are arranged on two sides of one end, sleeved with the movable hinge, of the connecting rod respectively, a positioning ball and the connecting rod are arranged in the middle of each transmission ball in a rotating mode, a ball seat is arranged on one side, away from the connecting rod, of each positioning ball, a cavity is arranged in the movable hinge, a low-damping spring is fixed to the bottom of each cavity, one end of the low-damping spring is connected with a piston, an L-shaped air hole is formed in the side wall, connected with the low-damping spring, of each cavity, the tail end of each air hole penetrates through the side wall of the movable hinge, and a one-way valve is arranged at the tail end of each air hole.
Contrast prior art, the beneficial effects of the utility model reside in that: the process is simple and the cost is low; the service life of the rubber sealing sleeve is prolonged; the wear resistance of each friction pair of the ball type universal joint is greatly improved; the service life of the ball type universal joint is greatly prolonged.
Drawings
FIG. 1 is a cross-sectional view of a system configuration.
The reference numbers shown in the figures:
1. living twisting; 2. a low damping spring; 3. a chamber; 4. a piston; 5. a ball seat; 6. a connecting rod; 7. a drive ball; 8. a positioning ball; 9. a one-way valve; 10. and (4) air holes.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention can be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present invention.
The embodiment is as follows: high-wear-resistance ball type universal joint assembly of screw drilling tool
The main structure comprises a connecting rod 6 and a movable hinge 1, the connecting rod 6 is sleeved with the movable hinge 1, transmission balls 7 are arranged on two sides of one end, sleeved with the movable hinge 1, of the connecting rod 6 respectively, a positioning ball 8 is arranged in the middle of each transmission ball 7, the positioning ball 8 and the connecting rod 6 are installed in a rotating mode, a ball seat 5 is arranged on one side, away from the connecting rod 6, of each positioning ball 8, a cavity 3 is arranged in the movable hinge 1, a low-damping spring 2 is fixed to the bottom of the cavity 3, one end of the low-damping spring 2 is connected with a piston 4, an L-shaped air hole 10 is formed in the side wall, connected with the low-damping spring 2, of the cavity 3, the tail end of the air hole 10 penetrates through the side wall of the movable hinge 1, and the tail end of the air hole 10 is provided with a one-way valve 9.
In order to enhance the wear resistance of the device, the movable hinge 1 and the connecting rod 6 of the universal joint are in contact with the transmission ball 7; the contact part of the ball seat 5, the connecting rod 6 and the positioning ball 8; the hard alloy layer is sprayed on the easy-to-wear part, and the spraying thickness of the hard alloy layer is 0.1 mm-2 mm.
In order to solve the problem of expansion of a sealing sleeve, a cavity 3 is additionally arranged in a living hinge 1, a low-damping spring 2 and a piston 4 are placed in the cavity, and an O-shaped ring is additionally arranged on the outer circle of the piston 4 to ensure the sealing property. When the lubricating oil is heated and expanded, the lubricating oil enters the cavity 3 through the oil hole in the ball seat 5, and air in the cavity 3 is discharged through the air hole 10 and the check valve 9, so that the pressure of the expanded lubricating oil on the sealing sleeve is effectively reduced, and the phenomenon that the sealing sleeve is broken can not occur.
Claims (1)
1. The high-wear-resistance ball type universal joint assembly of the screw drilling tool is characterized by comprising a connecting rod (6) and a movable hinge (1), wherein the connecting rod (6) is sleeved with the movable hinge (1), two sides of one end, sleeved with the movable hinge (1), of the connecting rod (6) are respectively provided with a transmission ball (7), the middle of the transmission ball (7) is provided with a positioning ball (8), the positioning ball (8) and the connecting rod (6) are installed in a rotating mode, one side, far away from the connecting rod (6), of the positioning ball (8) is provided with a ball seat (5), a cavity (3) is arranged in the movable hinge (1), the bottom of the cavity (3) is fixedly provided with a low-damping spring (2), one end of the low-damping spring (2) is connected with a piston (4), an L-shaped air hole (10) is formed in the side wall, connected with the low-damping spring (2), the tail end of the air hole (10) penetrates through the side wall of the movable hinge (1), and a one-way valve (9) is arranged at the tail end of the air hole (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222347188.XU CN218347342U (en) | 2022-09-02 | 2022-09-02 | High-wear-resistance ball type universal joint assembly of screw drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222347188.XU CN218347342U (en) | 2022-09-02 | 2022-09-02 | High-wear-resistance ball type universal joint assembly of screw drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218347342U true CN218347342U (en) | 2023-01-20 |
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ID=84916150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222347188.XU Active CN218347342U (en) | 2022-09-02 | 2022-09-02 | High-wear-resistance ball type universal joint assembly of screw drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218347342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117888832A (en) * | 2024-03-11 | 2024-04-16 | 大庆市璞庆钻采设备制造有限公司 | Underground tool connection special coupling with special threads |
-
2022
- 2022-09-02 CN CN202222347188.XU patent/CN218347342U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117888832A (en) * | 2024-03-11 | 2024-04-16 | 大庆市璞庆钻采设备制造有限公司 | Underground tool connection special coupling with special threads |
| CN117888832B (en) * | 2024-03-11 | 2024-05-24 | 大庆市璞庆钻采设备制造有限公司 | Underground tool connection special coupling with special threads |
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