A gear rotation structure

Abstract

The utility model discloses a gear rotation structure, which includes: a gear having a center hole at the center, a circle of convex teeth on the outside of the gear, an annular groove on the rear end face of the gear, the center of the annular groove overlaps with the axis of the gear; a fixing member, which is provided with a plurality of spaced end face limiting wheels, the periphery of the end face limiting wheels is provided with limiting grooves, the end face limiting wheels are distributed on the periphery of the gear, the outer edge of the gear is installed in the limiting groove to limit the front and rear end faces of the gear, and the gear and the fixing member are spaced; a radial limiting structure, which includes a plurality of radial limiting shafts, the ends of the radial limiting shafts are installed in the annular grooves, and can slide relative to the annular grooves to limit the radial position of the gear. The utility model adopts the end face limiting wheels to limit the front and rear end faces of the gear, and sets a plurality of radial limiting shafts on the fixing member to limit the radial position of the gear, so that the gear can be installed on the fixing member in a rotatable manner, which can meet the installation requirements that the center hole of the gear cannot be installed with a bearing or a shaft cannot be inserted.

Description

Technical field:

[0001] The utility model relates to the technical field of mechanical products, in particular to a gear rotating structure which can meet the installation requirement that a gear center hole needs to avoid air. Background technology:

[0002] A gear is a mechanical component with teeth on the rim that can continuously mesh to transmit motion and power.

[0003] The current gear rotation structure is composed of a shaft, a bearing and a gear. The specific assembly structure is: the outer circle of the bearing is installed and fixed at the center hole of the gear, and the shaft is passed through and fixed at the inner circle hole of the bearing, thereby completing the installation of the gear. When working, the gear can rotate relative to the shaft through the bearing, thereby achieving the working purpose of the gear rotating around the center point.

[0004] Since the current gear rotating structure must install a bearing at the gear center hole, the current gear rotating structure cannot meet the installation requirement that the gear center hole needs to avoid air, which places greater demands on users.

[0005] For example, in the lubrication mechanism of the planetary gear support bearing in the wind power gear box disclosed in Patent No. CN206439381U, the planetary gears inside are also assembled with shafts and bearings.

[0006] For example, in the pinion assembly with a bearing support surface disclosed in Patent No. CN212509432U, the pinion is also assembled with a shaft and a bearing.

[0007] The above two patents both have the above-mentioned technical problems, and the gears thereof cannot meet the installation requirement that the gear center hole needs to avoid air.

[0008] In view of this, the inventor proposes the following technical solution. Utility model content:

[0009] The utility model aims to overcome the shortcomings of the prior art and provide a gear rotation structure which can meet the installation requirement that the gear center hole needs to avoid air.

[0010] In order to solve the above technical problems, the utility model adopts the following technical solutions: the gear rotation structure includes: a gear having a center hole at the center, a circle of convex teeth being arranged on the outside of the gear, and an annular groove being arranged on the rear end face of the gear, the center of the annular groove overlapping with the axis of the gear; a fixing member, the fixing member being provided with a plurality of end face limiting wheels distributed at intervals, and a limiting groove being arranged on the periphery of the end face limiting wheel, the end face limiting wheels being distributed on the periphery of the gear, and the outer edge of the gear being installed in the limiting groove to limit the front and rear end faces of the gear, and the gear and the fixing member being distributed at intervals; a radial limiting structure, which includes a plurality of radial limiting shafts, the ends of the radial limiting shafts being installed in the annular grooves and being able to slide relative to the annular grooves to radially limit the gear.

[0011] Furthermore, in the above technical solution, the fixing member is provided with a plurality of shaft bodies, at least one first bearing is provided at the end of the shaft body, and the end face limiting wheel sleeve is fixed on the outer circle of the first bearing.

[0012] Furthermore, in the above technical solution, the end face limiting wheel has a first axial hole, and the front and rear ports of the first axial hole are respectively provided with a first step groove and a second step groove; the number of the first bearings is two, which are respectively embedded and fixed in the first step groove and the second step groove.

[0013] Furthermore, in the above technical solution, a second bearing is also fixed to the end of the radial limiting shaft, and the second bearing is arranged in the annular groove, and the outer circle of the second bearing contacts with at least one inner wall of the annular groove.

[0014] Furthermore, in the above technical solution, a clearance groove is also provided at the bottom of the annular groove, and the end of the radial limiting shaft also extends into the clearance groove.

[0015] Furthermore, in the above technical solution, the number of the end surface limiting wheels is at least three, and they are evenly distributed along the circumference.

[0016] Furthermore, in the above technical solution, the fixing member is a fixing base plate, which is distributed parallel to the gear.

[0017] Furthermore, in the above technical solution, a gap is formed between the protruding teeth on the outer edge of the gear and the bottom of the limiting groove.

[0018] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: when assembling gears, the utility model does not need to use an axis or bearing to pass through the center hole at the center of the gear, but an end face limiting wheel is set on the fixing part to limit the front and rear end faces of the gear, and a plurality of radial limiting shafts are set on the fixing part to limit the radial position of the gear, so that the gear is installed on the fixing part in a rotatable manner and forms an interval distribution with the fixing part. At this time, the center hole in the gear is avoided, which can meet the installation requirements that the center hole of the gear cannot be installed with a bearing or a shaft cannot be passed through. Among them, the end face limiting wheels are distributed on the periphery of the gear, and the outer edge of the gear is installed in the limiting groove of the end face limiting wheel to limit the front and rear end faces of the gear, thereby ensuring that the gear is stably installed at the front end of the fixing part, and can prevent the gear from jumping during rotation, thereby ensuring the stability of rotation. Among them, part of the convex teeth on the outside of the gear are used to engage with other gears to achieve transmission; in addition, multiple radial limiting shafts are turned into the annular groove set on the rear end face of the gear to further ensure that the gear and the fixing part are assembled more stably, and can ensure that the gear runs more stably when rotating, and the transmission effect is better. Description of the drawings:

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 It is an assembly structure diagram of the utility model. Specific implementation method:

[0021] The utility model is further described below in conjunction with specific embodiments and drawings.

[0022] See Figure 1-2 As shown, a gear rotation structure comprises: a gear 1, a fixing member 2, an end surface limiting wheel 21 and a radial limiting structure 3.

[0023] The gear 1 has a center hole 11 at its center. A circle of protruding teeth 12 is disposed outside the gear 1 . An annular groove 13 is disposed on the rear end surface of the gear 1 . The center of the annular groove 13 overlaps with the axis of the gear 1 .

[0024] The fixing member 2 is provided with a plurality of end surface limiting wheels 21 which are distributed at intervals, and a limiting groove 211 is provided on the periphery of the end surface limiting wheel 21. The end surface limiting wheels 21 are distributed on the periphery of the gear 1, and the outer edge of the gear 1 is inserted into the limiting groove 211 to limit the front and rear end surfaces of the gear 1, and the gear 1 and the fixing member 2 are distributed at intervals;

[0025] The radial limiting structure 3 includes a plurality of radial limiting shafts 31 , the ends of which are inserted into the annular groove 13 and can slide relative to the annular groove 13 to limit the gear 1 in the radial direction.

[0026] When assembling the gear 1, the utility model does not need to use a shaft or a bearing to penetrate the center hole 11 at the center of the gear 1. Instead, an end face limiting wheel 21 is provided on the fixing member 2 to limit the front and rear end faces of the gear 1, and a plurality of radial limiting shafts 31 are provided on the fixing member 2 to limit the radial position of the gear 1, so that the gear 1 is rotatably mounted on the fixing member 2 and is spaced apart from the fixing member 2. At this time, the center hole 11 in the gear 1 is kept empty, which can meet the installation requirements that the center hole 11 of the gear 1 cannot be installed with a bearing or a shaft cannot be penetrated. Among them, the end face limiting wheel 21 is distributed on the periphery of the gear 1, and the outer edge of the gear 1 is installed in the limiting groove 211 of the end face limiting wheel 21 to limit the front and rear end faces of the gear 1, thereby ensuring that the gear 1 is stably installed at the front end of the fixing member 2, and can prevent the gear 1 from jumping during the rotation process to ensure the stability of the rotation. Among them, part of the convex teeth 12 on the outside of the gear 1 is used to engage with other gears to achieve transmission; in addition, multiple radial limiting shafts 31 are rotated into the annular groove 13 set on the rear end face of the gear 1 to further ensure that the gear 1 and the fixing member 2 are assembled more stably, and can ensure that the gear 1 runs more stably during rotation and the transmission effect is better.

[0027] The assembly structure of the end face limiting wheel 21 and the fixing member 2 is as follows: the fixing member 2 is provided with a plurality of shaft bodies 22, at least one first bearing 23 is provided at the end of the shaft body 22, and the end face limiting wheel 21 is sleeved and fixed on the outer circle of the first bearing 23, so that the end face limiting wheel 21 is rotatably fixed on the fixing member 2, which can make the structure of the end face limiting wheel 21 extremely stable, and ensure that the end face limiting wheel 21 rotates more smoothly, and the limiting effect on the gear 1 is better.

[0028] Specifically, the end face limiting wheel 21 has a first shaft hole 212, and the front and rear ends of the first shaft hole 212 are respectively provided with a first step groove 213 and a second step groove 214; the number of the first bearings 23 is two, which are respectively embedded and fixed in the first step groove 213 and the second step groove 214. In other words, the utility model adopts two first bearings 23 for assembly, which can make the structure of the end face limiting wheel 21 extremely stable, and ensure that the end face limiting wheel 21 rotates more smoothly, and the limiting effect on the gear 1 is better.

[0029] In order to make the assembly structure of the radial limit shaft 31 and the gear 1 more stable and the gear 1 run more smoothly, the following design is also made: the end of the radial limit shaft 31 is also fixed with a second bearing 32, and the second bearing 32 is arranged in the annular groove 13. The outer circle of the second bearing 32 contacts at least one inner wall of the annular groove 13, and rolling friction is formed therebetween. The friction force is extremely small, which can make the assembly structure of the radial limit shaft 31 and the gear 1 more stable and the gear 1 run more smoothly. In addition, a clearance groove 131 is also arranged at the bottom of the annular groove 13, and the end of the radial limit shaft 31 also extends into the clearance groove 131, so that the end of the radial limit shaft 31 will not limit the rotation of the gear 1.

[0030] The number of the end surface limiting wheels 21 is at least three, and they are evenly distributed along the circumference. In this embodiment, the number of the end surface limiting wheels 21 is four, and they are distributed in a cross shape.

[0031] The fixing member 2 is a fixing base plate, which is arranged in parallel with the gear 1, so that the gear 1 can rotate more smoothly and will not be affected by the fixing base plate.

[0032] A gap is formed between the protruding teeth 12 on the outer edge of the gear 1 and the bottom of the limiting groove 211 .

[0033] To sum up, when assembling the gear 1, the utility model does not need to use a shaft or a bearing to penetrate the center hole 11 at the center of the gear 1, but an end face limiting wheel 21 is set on the fixing part 2 to limit the front and rear end faces of the gear 1, and a plurality of radial limiting shafts 31 are set on the fixing part 2 to limit the radial position of the gear 1, so that the gear 1 is rotatably mounted on the fixing part 2 and is spaced apart from the fixing part 2. At this time, the center hole 11 in the gear 1 is kept empty, which can meet the installation requirements that the center hole 11 of the gear 1 cannot be installed with a bearing or a shaft cannot be inserted. Among them, the end face limiting wheel 21 is distributed on the periphery of the gear 1, and the outer edge of the gear 1 is installed in the limiting groove 211 of the end face limiting wheel 21 to limit the front and rear end faces of the gear 1, thereby ensuring that the gear 1 is stably installed at the front end of the fixing member 2, and can prevent the gear 1 from jumping during the rotation process to ensure the stability of the rotation. Among them, part of the convex teeth 12 on the outside of the gear 1 is used to engage with other gears to achieve transmission; in addition, multiple radial limiting shafts 31 are rotated into the annular groove 13 set on the rear end face of the gear 1 to further ensure that the gear 1 and the fixing member 2 are assembled more stably, and can ensure that the gear 1 runs more stably during rotation and the transmission effect is better.

[0034] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made according to the structure, characteristics and principles described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A gear rotating structure, characterized in that: It includes: A gear (1) having a center hole (11) at its center, a circle of convex teeth (12) being arranged on the outside of the gear (1), and an annular groove (13) being arranged on the rear end surface of the gear (1), wherein the center of the annular groove (13) overlaps with the axis of the gear (1); A fixing member (2), the fixing member (2) being provided with a plurality of end surface limiting wheels (21) distributed at intervals, the end surface limiting wheels (21) being provided with limiting grooves (211) on their peripheries, the end surface limiting wheels (21) being distributed on the periphery of the gear (1), and the outer edge of the gear (1) being inserted into the limiting grooves (211) so as to limit the front and rear end surfaces of the gear (1), and the gear (1) and the fixing member (2) being distributed at intervals; The radial limiting structure (3) comprises a plurality of radial limiting shafts (31), the ends of which are inserted into the annular grooves (13) and can slide relative to the annular grooves (13) to limit the radial position of the gear (1).

2. A gear rotating structure according to claim 1, characterized in that: The fixing member (2) is provided with a plurality of shaft bodies (22), at least one first bearing (23) is provided at the end of the shaft body (22), and the end surface limiting wheel (21) is sleeved and fixed on the outer circle of the first bearing (23).

3. A gear rotating structure according to claim 2, characterized in that: The end surface limiting wheel (21) has a first axial hole (212), and the front and rear ends of the first axial hole (212) are respectively provided with a first step groove (213) and a second step groove (214); the number of the first bearings (23) is two, which are respectively embedded and fixed in the first step groove (213) and the second step groove (214).

4. A gear rotating structure according to any one of claims 1 to 3, characterized in that: A second bearing (32) is also fixed to the end of the radial limiting shaft (31); the second bearing (32) is arranged in the annular groove (13); the outer circle of the second bearing (32) contacts at least one inner wall of the annular groove (13).

5. A gear rotating structure according to claim 4, characterized in that: A clearance groove (131) is also provided at the bottom of the annular groove (13), and the end of the radial limiting shaft (31) also extends into the clearance groove (131).

6. A gear rotating structure according to claim 4, characterized in that: The number of the end surface limiting wheels (21) is at least three, and they are evenly distributed along the circumference.

7. The gear rotating structure according to claim 4, characterized in that: The fixing member (2) is a fixing base plate, which is distributed parallel to the gear (1).

8. The gear rotating structure according to claim 4, characterized in that: A gap is formed between the protruding teeth (12) on the outer edge of the gear (1) and the bottom of the limiting groove (211).

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