Self-lubricating push rod guide sleeve

Abstract

The self-lubricating push rod guide sleeve comprises a guide sleeve body, a positioning groove, an oil storage cavity matched with the positioning groove and an oil inlet hole communicated with the oil storage cavity are formed in the guide sleeve body, the positioning groove is formed in the inner hole wall of the guide sleeve body, and a plurality of balls are rotationally connected into the positioning groove. A plurality of oil guide holes in one-to-one correspondence with the balls are formed in the inner wall of the oil storage cavity, the oil guide holes communicate with the positioning groove, and the balls extend into the oil storage cavity and rotate in the oil guide holes and roll on the push rod; the push rod guide sleeve has the advantages that abrasion caused by excessive friction in the moving process of the push rod in the guide sleeve body due to poor lubrication is avoided, the problem that the guide precision of the push rod guide sleeve is affected due to the fact that a gap between the push rod and the guide sleeve body is larger and larger due to excessive friction is avoided, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the field of push rod guide sleeves, and more specifically, to a self-lubricating push rod guide sleeve. Background Art

[0002] The push rod guide sleeve of a driver is a key component in a mechanical transmission system, mainly used to provide precise guidance and support between the driver and the push rod. The push rod guide sleeve is usually designed as a component with high precision and wear resistance to adapt to a long-term and high-intensity working environment.

[0003] However, for the existing push rod guide sleeves used in drivers, the lubricating oil is usually directly applied to the inner wall of the push rod guide sleeve, which is easy to be contaminated with dust and the lubricating oil is consumed and cannot be replenished in time, resulting in insufficient lubrication and increased friction. During the movement of the push rod in the push rod guide sleeve, the push rod guide sleeve cannot continuously self-lubricate the push rod, which easily causes the push rod guide sleeve to have excessive friction during the movement of the push rod in the push rod guide sleeve, resulting in wear and shortened service life. Moreover, due to excessive friction, the gap between the push rod and the push rod guide sleeve will become larger and larger, affecting the guiding accuracy of the push rod guide sleeve, and the practicability is low. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide an adjustable self-lubricating push rod guide sleeve

[0005] To achieve the above purpose, the present utility model provides the following technical solutions:

[0006] A self-lubricating push rod guide sleeve, comprising a guide sleeve body, on which a positioning groove, an oil storage chamber cooperating with the positioning groove, and an oil inlet hole communicating with the oil storage chamber are opened. The positioning groove is arranged on the inner hole wall of the guide sleeve body, and several balls are rotatably connected in the positioning groove. Several oil guide holes corresponding to the several balls one by one are opened on the inner wall of the oil storage chamber. The oil guide holes communicate with the positioning groove, and the balls extend into the oil storage chamber and rotate in the oil guide holes, and the balls roll on the push rod.

[0007] Further, several rolling sleeves corresponding to the several balls one by one are installed in the positioning groove. The balls are rotatably connected in the corresponding rolling sleeves and rotate in the oil guide holes, and the balls extend out of the rolling sleeves and roll on the push rod.

[0008] Further, grooves cooperating with the balls are arranged on the inner wall of the rolling sleeve, and the balls rotate in the grooves.

[0009] Further, a sealing plug is threadedly connected to the oil inlet hole.

[0010] By adopting the above technical solution, the beneficial effects of the present utility model are as follows: during the movement of the push rod within the guide sleeve body, the guide sleeve body reduces the friction with the push rod by means of the rolling of the balls on the push rod, and during the process of the balls rolling on the push rod, in cooperation with the rotation of the balls within the oil guiding holes, the lubricating oil within the oil storage chamber is transferred onto the push rod for continuous self-lubrication, avoiding the situation where the lubricating oil is directly applied to the inner wall of the push rod guide sleeve and is prone to dust contamination, and the lubricating oil being consumed and not being replenished in a timely manner, resulting in insufficient lubrication and increased friction. Thus, a good lubricating effect is provided for the push rod, further reducing the friction with the push rod, avoiding excessive friction and wear during the movement of the push rod within the guide sleeve body due to poor lubrication, shortening the service life, and avoiding the gap between the push rod and the guide sleeve body becoming larger due to excessive friction, which affects the guiding accuracy of the push rod guide sleeve of the present utility model, and improving the practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model.

[0012] Figure 2 It is a schematic structural diagram of the cooperation between the ball and the rolling sleeve.

[0013] Figure 3 It is an enlarged structural diagram at position A.

[0014] In the figure: push rod 001, guide sleeve body 1, positioning groove 2, oil storage chamber 3, oil inlet hole 4, ball 5, oil guiding hole 6, rolling sleeve 7, groove 8, sealing plug 9. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Refer to Figures 1 to 3 for further description of the embodiments of the present utility model.

[0016] A self-lubricating push rod guide sleeve includes a guide sleeve body 1, on which a positioning groove 2, an oil storage chamber 3 cooperating with the positioning groove 2, and an oil inlet hole 4 communicating with the oil storage chamber 3 are provided. A sealing plug 9 is threadedly connected to the oil inlet hole 4. The positioning groove 2 is disposed on the inner hole wall of the guide sleeve body 1. A number of balls 5 and a number of rolling sleeves 7 corresponding to the number of balls 5 one by one are provided within the positioning groove 2. The rolling sleeves 7 are installed within the positioning groove 2, and the balls 5 are rotatably connected within the corresponding rolling sleeves 7. The provision of the rolling sleeves 7 facilitates the rotation of the balls 5 within the positioning groove 2, and at the same time prevents the balls 5 from shifting within the positioning groove 2 during rotation, affecting the use. Oil guiding holes 6 corresponding to the number of balls 5 one by one are provided on the inner wall of the oil storage chamber 3. The oil guiding holes 6 communicate with the positioning groove 2, and the balls 5 extend into the oil storage chamber 3 and rotate within the oil guiding holes 6. The balls 5 extend out of the rolling sleeves 7 and roll on the push rod 001.

[0017] Working principle: Pour lubricating oil into the oil storage chamber 3 from the oil inlet hole 4 and seal the oil inlet hole 4 by threadedly connecting the sealing plug 9 to the oil inlet hole 4 to prevent the lubricating oil from leaking out of the oil inlet hole 4 during the use of the guide bushing body 1. When the push rod 001 moves in the guide bushing body 1, the guide bushing body 1 reduces the friction with the push rod 001 by the rolling of the ball 5 rotatably connected to the rolling sleeve 7 in the positioning groove 2 on the push rod 001. And during the rotation of the ball 5 in the rolling sleeve 7, the ball 5 extends into the oil storage chamber 3 and rotates in the oil guide hole 6, and the oil guide hole 6 communicates with the oil storage chamber 3 and the positioning groove 2, so that the ball 5 with lubricating oil adheres to the lubricating oil in the oil storage chamber 3 during rotation. The lubricating oil in the oil storage chamber 3 is transferred out, and then the lubricating oil in the oil storage chamber 3 is transferred out during the rolling of the ball 5 on the push rod 001 to continuously self-lubricate the push rod 001, avoiding that the lubricating oil is directly applied to the inner wall of the guide bushing body and is easy to be contaminated with dust and the lubricating oil is consumed and cannot be replenished in time, resulting in insufficient lubrication and increased friction. A good lubrication effect is achieved, further reducing the friction with the push rod 001, avoiding excessive friction during the movement of the push rod 001 in the guide bushing body 1 due to poor lubrication, resulting in wear and shortening of the service life, and avoiding that the gap between the push rod 001 and the guide bushing body 1 becomes larger due to excessive friction, affecting the guiding accuracy of the push rod guide sleeve of the present invention and improving the practicability.

[0018] A groove 8 matching with the ball 5 is provided on the inner wall of the rolling sleeve 7, and the ball 5 rotates in the groove 8 to prevent the ball 5 from shaking and shifting when the ball 5 rotates in the rolling sleeve 7, making the push rod 001 unstable, thereby avoiding affecting the stability and guiding accuracy of the push rod guide sleeve of the present invention and further improving the practicability.

[0019] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-lubricating push rod guide sleeve, comprising a guide sleeve body (1), characterized in that: The guide sleeve body (1) is provided with a positioning groove (2), an oil storage chamber (3) matched with the positioning groove (2), and an oil inlet hole (4) connected with the oil storage chamber (3); the positioning groove (2) is arranged on the inner hole wall of the guide sleeve body (1); a plurality of balls (5) are rotatably connected in the positioning groove (2); a plurality of oil guide holes (6) corresponding to the plurality of balls (5) are provided on the inner wall of the oil storage chamber (3); the oil guide holes (6) are connected with the positioning groove (2); the balls (5) extend into the oil storage chamber (3) and rotate in the oil guide holes (6); and the balls (5) roll on the push rod (001).

2. A self-lubricating push rod guide sleeve according to claim 1, characterized in that: A plurality of rolling sleeves (7) corresponding to the plurality of balls (5) are installed in the positioning groove (2); the balls (5) are rotatably connected in the corresponding rolling sleeves (7) and rotate in the oil guide hole (6); and the balls (5) extend out of the rolling sleeves (7) and roll on the push rod (001).

3. A self-lubricating push rod guide sleeve according to claim 2, characterized in that: The inner wall of the rolling sleeve (7) is provided with a groove (8) that matches the ball (5), and the ball (5) rotates in the groove (8).

4. A self-lubricating push rod guide sleeve according to claim 3, characterized in that: A sealing plug (9) is threadedly connected to the oil inlet hole (4).

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