CN211117205U

CN211117205U - Anti-back-buckling connecting structure capable of bearing positive and negative high torques

Info

Publication number: CN211117205U
Application number: CN201921746763.5U
Authority: CN
Inventors: 黄保黔; 王文; 万文财
Original assignee: Guizhou Gaofeng Petroleum Machinery Co Ltd
Current assignee: Guizhou Gaofeng Petroleum Machinery Co Ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-07-28
Anticipated expiration: 2029-10-17

Abstract

The utility model discloses a bear positive and negative high moment of torsion prevent moving back and detain connection structure, including outer tube (1) and interior sleeve pipe (2), outer tube (1) one end is equipped with internal thread (3), and interior sleeve pipe (2) one end is equipped with external screw thread (4) of being connected with internal thread (3) cooperation, its characterized in that: an anti-torque hole (5) is arranged at the orifice at one end of the outer sleeve (1) provided with the internal thread (3); one end of the inner sleeve (2) provided with the external thread (4) is provided with a torsion resistant shaft (7) close to one side of the optical axis section (6) of the inner sleeve (2); the torsion resistant shaft (7) is matched and connected with the torsion resistant hole (5) through a torsion resistant ring (8). The utility model discloses a combination of multiple connection form has both guaranteed the pulling force and the transmission of pressure of connecting the overcoat and connecting endotheca axis direction, has guaranteed the transmission of positive and negative high moment of torsion between two parts again, has realized simultaneously preventing moving back the effect of detaining, makes and reaches the omnidirectional and connect between two parts. Provides an optimal connecting structure for the design and production of mechanical products.

Description

Anti-back-buckling connecting structure capable of bearing positive and negative high torques

Technical Field

The utility model relates to a bear anti-backing knot connection structure of positive and negative high moment of torsion belongs to oil field drilling tool technical field.

Background

In the design and production of mechanical products, due to the limitation of product structures and spaces, the requirements of assembly processes, the limitations of processing processes and equipment and the like, anti-back-off connection capable of bearing positive and negative high torques is frequently needed, and the processing cost and the dependence on high-precision large-scale equipment are reduced to the maximum extent on the premise of ensuring the performance and the use requirements of the products.

At present, the connection modes among parts mostly adopt connection modes such as threaded connection, pin shaft connection, clamping groove connection and the like. In the existing connection form: the threaded connection can only bear unidirectional torque, and the thread is easy to be unscrewed under the action of the reactive torque. At present, various anti-back-off technologies exist in the world, including methods such as spring washers, double nuts, variable screw pitches and the like, and the methods can only reduce the probability of back-off of the threads and cannot fundamentally realize true anti-back-off. Other connection modes such as pin shaft connection and clamping groove connection can cause damage of different degrees, serious plot, breakage of the pin shaft and the clamping groove and product failure when bearing the action of high torque. Therefore, the prior art has shortcomings and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bear positive and negative high moment of torsion's anti-moving back knot connection structure to reduce the processing cost and to the reliance of high accuracy and main equipment, and through the utility model discloses a connected mode connects, reaches the purpose of bearing positive and negative high moment of torsion, plays threaded connection's anti-moving back knot effect simultaneously, thereby overcomes prior art's is not enough.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses a resist backing and detain connection structure who bears positive and negative high moment of torsion, including outer tube and interior sleeve pipe, outer tube one end is equipped with the internal thread, interior sleeve pipe one end is equipped with the external screw thread, the drill way that the outer tube was equipped with the internal thread one end is equipped with the antitorque hole; one end of the inner sleeve, which is provided with the external thread, is close to one side of the optical axis section of the inner sleeve, and a torsion-resistant shaft is arranged at one side of the optical axis section; the torsion-resistant shaft is connected with the torsion-resistant hole in a matching way through a torsion-resistant ring.

In the anti-back-off connection structure, the anti-torsion hole is a hexagonal hole or a splined hole; the torsion resistant shaft is a hexagonal shaft or a spline shaft.

In the anti-back-off connection structure, the inner hole of the torsion-resistant ring is connected with the hexagonal shaft or the spline shaft of the torsion-resistant shaft in a matching way; the outer side of the anti-torsion ring is in fit connection with a hexagonal hole or a spline hole of the anti-torsion hole.

In the anti-back-off connecting structure, the torsion resistant ring is provided with a blind hole; the outer sleeve is provided with a threaded through hole; a screw is arranged in the threaded through hole; the screw is connected with the threaded through hole and the blind hole.

In the anti-back-off connection structure, chamfers are arranged at two ends of the anti-torsion ring, two ends of the anti-torsion shaft and an orifice end of the anti-torsion hole.

In the aforesaid prevent back-off connection structure, the internal thread bottom is equipped with the seal groove that is used for installing the sealing washer, and the seal groove bottom is equipped with round chamfer.

In the anti-back-off connection structure, the screw is a non-end screw, one end of the screw is provided with a screwing groove, and the screw sinks into the outer circular surface of the outer sleeve.

Since the technical scheme is used, the utility model discloses compare with prior art, the utility model discloses a combination of multiple connection form has both guaranteed the pulling force and the transmission of pressure of connecting the overcoat and connecting endotheca axis direction, has guaranteed the transmission of positive and negative high moment of torsion between two parts again, has realized simultaneously preventing moving back the effect of detaining, makes and reaches the omnidirectional and connect between two parts. Provides an optimal connection method for the design and production of mechanical products.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an external view of the present invention;

fig. 3 is an exploded view of the present invention.

The labels in the figures are: 1-outer sleeve, 2-inner sleeve, 3-inner thread, 4-outer thread, 5-torsion-resistant hole, 6-optical shaft section, 7-torsion-resistant shaft, 8-torsion-resistant ring, 9-blind hole, 10-threaded through hole, 11-screw, 12-chamfer, 13-sealing groove, 14-round chamfer and 15-screwing groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The utility model relates to a bear positive and negative high moment of torsion prevent back off and detain connection method constitute, as shown in fig. 1-3, this method sets up the antitorque hole 5 at the mouth of pipe of outer sleeve pipe 1 screw thread section, sets up antitorque axle 7 in inner tube 2 middle section simultaneously, connects through antitorque ring 8 between antitorque hole 5 and the antitorque axle 7 to transmit positive and negative high moment of torsion; meanwhile, the internal thread 3 on the outer sleeve 1 is connected with the external thread 4 in the inner sleeve 2 so as to transmit the axial tension or the axial pressure between the outer sleeve 1 and the inner sleeve 2. When the inner sleeve 2 is connected with the outer sleeve 1, the torsion-resistant ring 8 is sleeved outside the inner sleeve 2 without influencing the threaded connection part of the inner sleeve and the outer sleeve, and the inner sleeve 2 is in threaded connection with the outer sleeve 1; then the torsion ring 8 is slid into the torsion hole 5 of the outer sleeve 1, the screw 11 is screwed into the blind hole 9 of the torsion ring 8, and the outer sleeve 1 and the torsion ring 8 are connected into a whole through the screw 11 so as to prevent the torsion ring 8 from sliding out of the torsion hole 5.

According to the above method, the anti-back-off connection structure of the present invention for bearing positive and negative high torque, as shown in fig. 1-3, comprises an outer sleeve 1 and an inner sleeve 2, wherein one end of the outer sleeve 1 is provided with an internal thread 3, one end of the inner sleeve 2 is provided with an external thread 4, and a hole opening at the end of the outer sleeve 1 provided with the internal thread 3 is provided with an anti-torsion hole 5; one end of the inner sleeve 2, which is provided with the external thread 4, is provided with a torsion resistant shaft 7 close to one side of the optical axis section 6 of the inner sleeve 2; the torsion-resistant shaft 7 is matched and connected with the torsion-resistant hole 5 through a torsion-resistant ring 8. The torsion-resistant hole 5 is a hexagonal hole or a spline hole; the torsion resistant shaft 7 is a hexagonal shaft or a spline shaft. An inner hole of the torsion resistant ring 8 is connected with a hexagonal shaft or a spline shaft of the torsion resistant shaft 7 in a matching way; the outer side of the anti-torsion ring 8 is matched and connected with a hexagonal hole or a spline hole of the anti-torsion hole 5. The torsion resistant ring 8 is provided with a blind hole 9; the outer sleeve 1 is provided with a thread through hole 10; a screw 11 is arranged in the threaded through hole 10; the screw 11 is connected with the threaded through hole 10 and the blind hole 9, and during manufacturing, internal threads matched and connected with the screw 11 can be manufactured in the blind hole 9 or the blind hole 9 can be directly manufactured into a smooth hole into which the screw 11 can be inserted; the two ends of the torsion ring 8, the two ends of the torsion shaft 7 and the orifice end of the torsion hole 5 are provided with chamfers 12. The bottom end of the internal thread 3 is provided with a sealing groove 13 for installing a sealing ring, and the bottom of the sealing groove 13 is provided with a round chamfer 14. The screw 11 is an endless screw, one end of the screw 11 is provided with a screwing groove 15, and the screw 11 is sunk into the outer circular surface of the outer sleeve 1.

Examples

In the embodiment, the outer sleeve 1 and the inner sleeve 2 are connected through threads, so that the transmission of axial tension and pressure of two parts is realized. The torque is transmitted reliably through the hexagonal or spline between the outer sleeve 1 → the torsion resistant ring 8 → the inner sleeve 2, and the use requirements can be met under the states of positive and negative torque and large torque. The outer sleeve 1 and the torsion ring 8 are axially limited by screws 11, so that the torsion ring 8 is always in the working state as shown in fig. 1. The torque transmission directions of the outer sleeve 1 and the inner sleeve 2 are not limited, forward and backward transmission can be realized, and the phenomenon of thread back-off of threads can be avoided.

The connection operation steps of this example are as follows:

firstly, a torsion-resistant ring 8 is arranged on the connecting inner sleeve 2, and the torsion-resistant ring 8 is more arranged so as not to influence the subsequent operation; then the outer sleeve 1 and the inner sleeve 2 are connected in a threaded manner; after the threaded connection between the outer sleeve 1 and the inner sleeve 2 is completed, the torsion-resistant ring 8 is pushed into the torsion-resistant hole 5 of the outer sleeve 1, and the position of the torsion-resistant ring 8 is fixed through the screw 11, so that the installation is completed.

Claims

1. The utility model provides a bear positive and negative high moment of torsion prevent moving back and detain connection structure, includes outer tube (1) and interior sleeve pipe (2), outer tube (1) one end is equipped with internal thread (3), interior sleeve pipe (2) one end is equipped with external screw thread (4) of being connected with internal thread (3) cooperation, its characterized in that: an anti-torque hole (5) is arranged at the orifice at one end of the outer sleeve (1) provided with the internal thread (3); one end of the inner sleeve (2) provided with the external thread (4) is provided with a torsion resistant shaft (7) close to one side of the optical axis section (6) of the inner sleeve (2); the torsion resistant shaft (7) is matched and connected with the torsion resistant hole (5) through a torsion resistant ring (8).

2. The anti-back-off connection structure capable of bearing positive and negative high torques according to claim 1, characterized in that: the torsion-resistant hole (5) is a hexagonal hole or a spline hole; the torsion resistant shaft (7) is a hexagonal shaft or a spline shaft.

3. The anti-back-off connection structure capable of bearing positive and negative high torques according to claim 1, characterized in that: the inner hole of the torsion resistant ring (8) is connected with the hexagonal shaft or the spline shaft of the torsion resistant shaft (7) in a matching way; the outer side of the anti-torsion ring (8) is matched and connected with a hexagonal hole or a spline hole of the anti-torsion hole (5).

4. The anti-back-off connection structure capable of bearing positive and negative high torques according to claim 1, characterized in that: the torsion resistant ring (8) is provided with a blind hole (9); the outer sleeve (1) is provided with a threaded through hole (10); a screw (11) is arranged in the threaded through hole (10); the screw (11) is connected with the threaded through hole (10) and the blind hole (9).

5. The anti-back-off connection structure capable of bearing positive and negative high torques according to claim 1, characterized in that: chamfers (12) are arranged at the two ends of the torsion resistant ring (8), the two ends of the torsion resistant shaft (7) and the orifice end of the torsion resistant hole (5).

6. The anti-back-off connection structure capable of bearing positive and negative high torques according to claim 1, characterized in that: the bottom end of the internal thread (3) is provided with a sealing groove (13) for mounting a sealing ring, and the bottom of the sealing groove (13) is provided with a round chamfer (14).

7. The anti-back-off connection structure capable of bearing positive and negative high torques according to claim 4, characterized in that: the screw (11) is a non-end screw, one end of the screw (11) is provided with a screwing groove (15), and the screw (11) is sunk into the outer circular surface of the outer sleeve (1).