Anti-abrasion worm mechanism

Abstract

The utility model discloses an anti-abrasion worm mechanism. The worm mechanism comprises a mounting plate, a worm rod and a worm rod, the guide cones are rotatably mounted on the mounting plate, the guide cones are arranged in the length direction of the mounting plate, and at least a plurality of rows of guide cones are arranged in the width direction of the mounting plate; and the worm is provided with a worm thread, the tooth crest of the worm thread extends into the gap between the two adjacent guide cones, and the tooth side face of the worm thread abuts against the side faces of the guide cones.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission mechanism technical field especially relates to a kind of anti-abrasion worm mechanism. BACKGROUND

[0002] Traditional worm transmission mechanism generally adopts worm gear meshing structure, and there is large sliding friction between its tooth surface. In the long-term operation process, this sliding friction is easy to cause the surface material of guiding component to be abraded, heat accumulation to cause softening deformation, and then cause transmission precision to drop and mechanism to fail. Although high wear-resistant material or forced lubrication system is used to improve in prior art, there are still problems such as complex structure, short maintenance period. Especially under high load working condition, stress concentration phenomenon generated by sliding friction can accelerate fatigue damage of contact surface, which restricts the application of worm mechanism in precision transmission field. SUMMARY

[0003] The utility model aims at solving the above-mentioned problem and provides a kind of anti-abrasion worm mechanism.

[0004] The technical scheme of the utility model is realized as follows:

[0005] The utility model provides a kind of anti-abrasion worm mechanism, the worm mechanism includes:

[0006] Mounting plate;

[0007] Guiding cone, rotatably mounted on the mounting plate, the guiding cone is arranged along the length direction of the mounting plate, and at least a series is arranged along the width direction of the mounting plate;

[0008] Worm, the worm has worm thread on it, the addendum of the worm thread extends into the gap between adjacent two guiding cones, and the flank of the worm thread is in abutment with the side surface of the guiding cone.

[0009] The advantages or beneficial effects of the above technical scheme at least include:

[0010] 1. Friction form innovation: the dislocation cooperation of rolling guiding cone group and worm thread converts traditional sliding friction into rolling friction, which significantly reduces the risk of contact surface wear. Guiding cone adaptive rotation characteristics can dynamically adjust contact stress distribution to avoid material fatigue caused by local stress concentration.

[0011] 2. Self-lubricating system optimization: three-dimensional lubrication network integrating main oil channel-lubricating oil channel-ball separation compartment forms continuous lubricating film layer. This design not only reduces the running resistance of bearing ball, but also effectively removes the heat generated by friction pair, realizes maintenance-free long-term operation.

[0012] 3. Structure synergism: double-row misaligned guide cones and worm lead angle are precisely matched, which enhances structural compactness while ensuring transmission accuracy. Modular mounting plate design facilitates mass production, and through standardized oil injection holes, convenient maintenance is realized, greatly improving product applicability. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0014] Figure 1 Fig. 1 shows a structural schematic diagram of the anti-wear worm mechanism of the embodiment of the present application;

[0015] Figure 2 Fig. 4 shows a schematic diagram of the embodiment of the present application after hiding the mounting plate, wherein the dashed line of the enlarged part is a guide cone tangent line;

[0016] Figure 3 Fig. 4 shows a schematic diagram of the embodiment of the present application after hiding the mounting plate, wherein the dashed line of the enlarged part is a guide cone tangent line;

[0017] Figure 4 Fig. 4 shows a schematic diagram of the embodiment of the present application after hiding the mounting plate, wherein the dashed line of the enlarged part is a guide cone tangent line;

[0018] Figure 5 Fig. 4 shows a schematic diagram of the embodiment of the present application after hiding the mounting plate, wherein the dashed line of the enlarged part is a guide cone tangent line;

[0019] Figure 6 Fig. 4 shows a schematic diagram of the embodiment of the present application after hiding the mounting plate, wherein the dashed line of the enlarged part is a guide cone tangent line;

[0020] Reference signs: 10, mounting plate; 11, mounting column; 111, bearing ball; 112, ball separation bin; 113, lubricating oil channel; 12, main oil channel; 13, oil injection hole; 20, guide cone; 30, worm; 31, worm thread; DETAILED DESCRIPTION

[0021] Embodiments of the present application will be described in more detail by referring to the attached drawings. Although certain embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided to more thoroughly and completely understand the present application. It should be understood that the drawings and embodiments of the present application are for exemplary purposes only and are not intended to limit the scope of protection of the present application.

[0022] It should be noted that the embodiments and features in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0023] It should be understood that the term "comprising" and variations thereof as used herein are open-ended, that is, mean "including but not limited to". The term "based on" means "based, at least in part, on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions will be given in the description below. It should be noted that the "first", "second", and the like concepts mentioned in the present application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0024] It should be noted that the modification of "one" or "multiple" mentioned in the present application is illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise explicitly stated in the context, it should be understood as "one or more".

[0025] The names of the messages or information exchanged between the multiple devices in the embodiments of the present application are only for illustrative purposes, and are not used to limit the scope of the messages or information.

[0026] A wear-resistant worm mechanism, the worm 30 mechanism comprises:

[0027] The mounting plate 10;

[0028] The guide cone 20 is rotatably mounted on the mounting plate 10, the guide cone 20 is arranged along the length direction of the mounting plate 10, and at least a plurality of series are arranged along the width direction of the mounting plate 10, and as preferred, the guide cone 20 is mounted with two series along the width direction of the mounting plate 10;

[0029] The worm 30, the worm 30 has a worm thread 31, the addendum of the worm thread 31 extends into the gap between the adjacent two guide cones 20, and the flank of the worm thread 31 abuts against the side surface of the guide cone 20, such as Figure 3As shown, one row of guide cones 20 moves a predetermined distance relative to another row of guide cones 20 along the length of the mounting plate 10 to make it misaligned with the other row of guide cones 20, so that the angle of the tangent of the two guide cones 20 in the width direction is consistent with the lead angle of the worm thread 31. The multiple guide cones 20 form a tooth-like structure. When the worm 30 rotates, the worm thread 31 meshes in the gap of the guide cones 20 to make the worm 30 move forward or backward. During the rotation of the worm 30, the guide cones 20 will rotate adaptively because the tooth side surface of the worm thread 31 rubs against the side surface of the guide cone 20.

[0030] Compared to existing technologies, the sliding friction has been replaced with rolling friction, which avoids the thermal softening and stress concentration that can lead to fatigue and damage of materials after prolonged use.

[0031] As a further improvement to the above structure, the mounting plate 10 has a plurality of mounting posts 11, the guide cone 20 is rotatably mounted on the mounting posts 11, and bearing balls 111 are rotatably mounted between the outer side of the top of the mounting post 11 and the inner side of the guide cone 20. A ball separator 112 is also mounted between the outer side of the top of the mounting post 11 and the inner side of the guide cone 20. The bearing balls 111 are installed in the ball separator 112, which is used to maintain a distance between the bearing balls 111 and reduce the friction between the guide cone 20 and the mounting posts 11.

[0032] Based on the above structure, a main oil passage 12 is provided in the mounting plate 10 along its axial direction; a lubricating oil passage 113 is provided in the mounting column 11, one end of the lubricating oil passage 113 is connected to the main oil passage 12, and the other end opens towards the bearing ball 111, so that the lubricating oil of the main oil passage 12 can enter the bearing ball 111 through the lubricating oil passage 113; an oil injection hole 13 is also provided on the side wall of the mounting plate 10 for injecting lubricating oil into the main oil passage 12, so as to lubricate the bearing ball 111.

[0033] As a further improvement, the oil tank for filling the oil injection hole 13 has the oil level flush with the bearing balls 111, such as... Figure 6 As shown, the oil level is moved away from the bearing ball 111 so that the lubricating oil can be retained at the bearing ball 111 to keep it lubricated.

[0034] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present invention and are not intended to limit the scope of the present invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A wear-resistant worm gear mechanism, characterized in that: The worm gear (30) mechanism includes: Mounting plate (10); A guide cone (20) is rotatably mounted on the mounting plate (10). The guide cone (20) is arranged along the length direction of the mounting plate (10) and at least several rows are arranged along the width direction of the mounting plate (10). A worm (30) having a worm thread (31) on it, the tooth tip of the worm thread (31) extending into the gap between two adjacent guide cones (20), and the tooth side surface of the worm thread (31) abutting against the side surface of the guide cone (20).

2. The anti-wear worm gear mechanism according to claim 1, characterized in that: The guide cones (20) are installed in two rows along the width direction of the mounting plate (10); One of the guide cones (20) moves a predetermined distance relative to the other guide cone (20) along the length of the mounting plate (10) to misalign with the other guide cone (20), such that the angle of the tangent of the two guide cones (20) in the width direction is consistent with the lead angle of the worm thread (31).

3. The anti-wear worm gear mechanism according to claim 1 or 2, characterized in that: The mounting plate (10) has a plurality of mounting posts (11), and the guide cone (20) is rotatably mounted on the mounting posts (11).

4. The anti-wear worm gear mechanism according to claim 3, characterized in that: A bearing ball (111) is rotatably mounted between the outer side of the top of the mounting post (11) and the inner side of the guide cone (20); A ball separator (112) is also installed between the outer top of the mounting post (11) and the inner side of the guide cone (20), and the bearing balls (111) are installed in the ball separator (112). The ball separator (112) is used to maintain a distance between the bearing balls (111).

5. The anti-wear worm gear mechanism according to claim 4, characterized in that: The mounting plate (10) has a main oil passage (12) opened along its axial direction; The mounting column (11) has a lubricating oil passage (113). One end of the lubricating oil passage (113) is connected to the main oil passage (12), and the other end opens toward the bearing ball (111) so that the lubricating oil of the main oil passage (12) can enter the bearing ball (111) through the lubricating oil passage (113). The mounting plate (10) is also provided with an oil injection hole (13) on its side wall for injecting lubricating oil into the main oil passage (12).

Images