CN219620746U - Waterproof sealing speed reducing mechanism of electric winch - Google Patents

Abstract

The utility model discloses a waterproof sealing speed reducing mechanism of an electric winch, which belongs to the field of electric winches and comprises a speed reducing box body, a gear ring and a speed reducing box bracket which are fixed together and distributed in sequence, and is characterized in that sealing pieces are arranged between the speed reducing box body and the gear ring and between the gear ring and the speed reducing box bracket, each sealing piece comprises a sealing ring and a sealing strip arranged on a sealing surface of the sealing ring, and the sealing strip is provided with a circle along the circumferential direction of the sealing ring; the sealing ring is provided with a plurality of through holes distributed along the circumferential direction at intervals, the sealing strip comprises extension parts positioned between two adjacent through holes and bending parts connected with the two adjacent extension parts, the bending parts are positioned outside the through holes and extend along the circumferential direction of the through holes, the extension parts and the circle centers of the connecting holes are positioned on the same or similar circles, so that the size of the sealing piece is reduced, and the surrounding parts and the extension parts are fixed to form the complete sealing strip, so that better sealing performance is achieved.

Description

Waterproof sealing speed reducing mechanism of electric winch

Technical Field

The utility model relates to the field of electric winches, in particular to a waterproof sealing speed reducing mechanism of an electric winch.

Background

The electric winch is a common traction device, the electric winch is driven by a motor to rotate so as to achieve traction, and the existing electric winch is additionally provided with a speed reducing mechanism so as to increase the output torque of the motor, so that an object with larger weight can be towed. The reducing mechanism comprises a plurality of shells, sealing rings are arranged between the adjacent shells, through holes for the fasteners to pass through are formed in the sealing rings so that the sealing rings are fixed between the adjacent shells, sealing strips are arranged on the sealing rings for enhancing the sealing performance of the sealing rings, but the existing sealing strips are annular, and the radial sizes of the sealing rings are overlarge due to the annular sealing strips and the through holes, so that the reducing mechanism has larger limitation.

Disclosure of Invention

In order to solve the defects and shortcomings in the prior art, the utility model provides a waterproof sealing speed reducing mechanism of an electric winch, wherein an extending part is arranged between adjacent through holes, and a bending part extends along the circumferential direction of the through holes and is fixed with the extending part, so that the space required by a sealing strip and the through holes is reduced, the whole size of a sealing piece is reduced, and the practicability is improved.

In order to achieve the technical aim, the waterproof sealing speed reducing mechanism of the electric winch comprises a speed reducing box body, a gear ring and a speed reducing box support, wherein the speed reducing box body, the gear ring and the speed reducing box support are fixed together and are sequentially distributed; the sealing ring is provided with a plurality of through holes distributed along the circumferential direction at intervals, the sealing strip comprises an extension part positioned between two adjacent through holes and a bending part connected with the two adjacent extension parts, and the bending part is positioned outside the through holes and extends along the circumferential direction of the through holes.

Preferably, the extending part is arc-shaped and is positioned on the same circle with the circle center of each through hole, and the bending part is semicircular and is positioned on one side of the through hole close to the center of the sealing ring.

Preferably, the width of the sealing strip along the radial direction of the sealing ring is 1 mm-2 mm; and/or the protruding height of the sealing strip relative to the sealing ring is 0.3 mm-1 mm.

Preferably, sealing strips are arranged on the two sealing surfaces of the sealing ring, and the outline of the two sealing strips is identical.

Preferably, the distance between the bending part and the through hole is 0.5 mm-2 mm; and/or the distance between the bending part and the inner wall of the sealing ring is 0.5 mm-2 mm.

Preferably, the sealing strip is formed on the sealing surface of the sealing ring by screen printing.

Preferably, the reduction gearbox body is provided with an annular step on one side facing the gear ring, and a sealing piece between the reduction gearbox body and the gear ring is sleeved outside the annular step and clamped between the reduction gearbox body and the gear ring.

Preferably, the reduction gearbox body and the gear ring are respectively provided with a plurality of connecting holes, the reduction gearbox body and the gear ring are fixed together through fasteners matched with the connecting holes, and the fasteners penetrate through the through holes in the sealing rings.

Preferably, the end face of the reduction gearbox support, which faces the gear ring, is provided with an annular mounting groove, and a sealing piece between the gear ring and the reduction gearbox support is arranged in the annular mounting groove and is clamped between the gear ring and the reduction gearbox support.

Preferably, the gear ring and the gearbox bracket are respectively provided with a plurality of connecting holes, the gear ring and the gearbox bracket are fixed together through fasteners matched with the connecting holes, and the fasteners penetrate through the through holes on the sealing ring.

After the technical scheme is adopted, the utility model has the following advantages:

1. in order to enhance the sealing performance, the waterproof sealing speed reducing mechanism of the electric winch is provided with sealing elements between the speed reducing box body and the gear ring and between the gear ring and the speed reducing box bracket. The sealing element comprises a sealing ring and a sealing strip arranged on the sealing surface of the sealing ring, the sealing element is clamped between the reduction gearbox body and the gear ring and between the gear ring and the reduction gearbox support, and the sealing strip deforms under stress so as to achieve a better sealing effect. In order to reduce the size of the sealing piece, the sealing strip comprises an extension part between the through holes and a bending part connecting the two extension parts, wherein the bending part is positioned outside the through holes and extends along the axial direction of the through holes, so that the extension part and the through holes are positioned on the same or similar circle, thereby reducing the radial width of the sealing ring and reducing the size of the sealing piece.

2. The extending part is arc-shaped and is positioned on the same circle with the circle center of the through hole, so that the space occupied by the through hole and the extending part can be further reduced, and the size of the sealing piece is reduced; furthermore, the semi-circular through hole is positioned on one side of the through hole close to the center of the sealing ring, so that the length of the outer diameter of the sealing ring can be reduced, and the size of the sealing piece can be reduced.

3. The radial width of sealing strip along the sealing ring is 1mm ~ 2mm, and the sealing strip is 0.3mm ~ 1mm for the protrusion height of sealing ring, and the width and the height of reasonable setting are convenient for the sealing member conflict and are installed between ring gear and reduction gearbox body, between ring gear and the reduction gearbox support to the sealing strip can atress warp, thereby is favorable to reinforcing sealing performance.

4. Sealing strips are arranged on the two sealing surfaces of the sealing ring, so that the two sides of the sealing piece have good sealing performance; moreover, the appearance profile of the two sealing strips is consistent, so that the stress on the two sides of the sealing piece is symmetrical, the malignant deformation of the sealing ring is reduced, and good sealing performance is ensured.

5. The distance between the bending part and the through hole is 0.5 mm-2 mm, and the reasonably arranged distance can ensure that the bending part and the through hole have better structural strength, so that the conditions of sealing element damage and the like caused by too close distance between the bending part and the through hole are prevented; the distance between the bending part and the inner wall of the sealing ring is 0.5-2 mm, and the reasonably arranged distance can be favorable for preventing the bending part from exceeding the sealing ring after being stressed and deformed, so that good sealing performance is ensured.

6. The sealing ring is formed on the sealing surface of the sealing ring through screen printing, the manufacturing process is simple and convenient, the sealing ring and the sealing ring can be made of two materials, and corresponding materials are adopted for the sealing ring and the sealing strip, so that the sealing effect of the sealing piece is enhanced.

7. The side of reducing gear box towards the ring gear is equipped with annular step, and the installation of sealing member can be realized to the sealing member cover on locating annular step, and easy operation is convenient, and the sealing member is pressed from both sides tightly between reducing gear box and ring gear to guarantee the leakproofness between the two.

8. The reduction gearbox body and the gear ring are all provided with a plurality of connecting holes, the reduction gearbox body and the gear ring are fixed together through fasteners matched with the connecting holes, and the fasteners penetrate through the through holes on the sealing ring, so that the fasteners can fix the reduction gearbox body, the gear ring and the gear ring into a whole, and the sealing piece is prevented from moving or twisting when being stressed, so that the tightness is affected.

9. The gear box support is provided with the annular mounting groove on the end face facing the gear ring, and the sealing element is arranged in the annular mounting groove, so that the installation of the sealing element can be realized, the operation is simple and convenient, and the sealing element is clamped between the gear ring and the gear box support, thereby ensuring the tightness between the gear ring and the gear box support.

10. The gear ring and the gearbox support are respectively provided with a plurality of connecting holes, the gear ring and the gearbox support are fixed together through fasteners matched with the connecting holes, and the fasteners penetrate through the through holes on the sealing rings, so that the fasteners can fix the gear ring, the gearbox support and the gear ring into a whole, and the sealing piece is prevented from moving or twisting when being stressed, so that the tightness is affected.

Drawings

FIG. 1 is a complete machine assembly diagram of an electric capstan according to an embodiment;

FIG. 2 is an assembly view of a watertight seal reduction mechanism according to an embodiment;

FIG. 3 is an exploded view of a watertight seal speed reduction mechanism according to an embodiment;

FIG. 4 is a schematic view of a seal in a watertight seal reduction mechanism according to an embodiment;

FIG. 5 is an enlarged schematic view of FIG. 4 at A;

FIG. 6 is a schematic view of a reduction gearbox in a watertight seal reduction mechanism according to an embodiment;

fig. 7 is a schematic view of a reduction gearbox bracket in a waterproof seal reduction mechanism according to an embodiment.

In the figure, 1, a reduction gearbox body; 11. an annular step; 2. a gear ring; 3. a reduction gearbox bracket; 31. an annular mounting groove; 4. a seal; 41. a seal ring; 42. a sealing strip; 421. an extension; 422. a bending portion; 43. a through hole; 5. a reel; 6 a driving mechanism.

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples. It is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, as used herein, are merely based on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices/elements referred to must have or be configured and operated in a particular orientation and therefore should not be construed as limiting the utility model.

Example 1

Referring to fig. 1 to 6, the waterproof sealing speed reducing mechanism of the electric capstan provided by the first embodiment of the present utility model includes a reduction gearbox body 1, a gear ring 2 and a reduction gearbox bracket 3 which are fixed together and distributed in sequence, wherein sealing members 4 are respectively arranged between the reduction gearbox body 1 and the gear ring 2 and between the gear ring 2 and the reduction gearbox bracket 3, the sealing members 4 include a sealing ring 41 and a sealing strip 42 arranged on a sealing surface of the sealing ring 41, and the sealing strip 42 is provided with a circle along the circumferential direction of the sealing ring 41; the sealing ring 41 is provided with a plurality of through holes 43 distributed at intervals along the circumferential direction, the sealing strip 42 comprises an extending part 421 positioned between two adjacent through holes and a bending part 422 connected with the two adjacent extending parts 421, and the bending part 422 is positioned outside the through holes 43 and extends along the circumferential direction of the through holes 43.

In order to enhance the sealing performance, the waterproof sealing speed reducing mechanism of the electric winch is provided with sealing elements 4 between the speed reducing box body 1 and the gear ring 2 and between the gear ring 2 and the speed reducing box bracket 3. The sealing element 4 comprises a sealing ring 41 and a sealing strip 42, the sealing element 4 is clamped between the reduction gearbox body 1 and the gear ring 2 and between the gear ring 2 and the reduction gearbox bracket 3, and the sealing strip 42 deforms under force so as to achieve a better sealing effect. In order to reduce the size of the sealing member 4, the sealing strip 42 includes an extension portion 421 between the through holes 43 and a bent portion 422 connecting the two extension portions 421, the bent portion 422 being located outside the through holes 43 and extending in the axial direction of the through holes 43, so that the extension portions 421 and the through holes 43 can be located on the same or similar circle, thereby reducing the radial width of the sealing ring 41, thereby reducing the size of the sealing member 4.

Referring to fig. 1, the electric capstan includes a spool 5, a driving mechanism 6, and the above-described speed reducing mechanism. The driving mechanism 6 provides power and drives the winding drum 5 to rotate through the speed reducing mechanism, the winding drum 5 can be wound with ropes, and the rotating winding drum 5 can receive or release the ropes, so that the traction of heavy objects is realized. The speed reducing mechanism can increase the torque finally output by the electric winch by increasing the speed reducing ratio (the ratio of the motor speed to the output speed), so that an object with larger mass is pulled. In addition, the electric capstan generally requires an outdoor work, so it is important to ensure that the reduction mechanism has good sealability.

Referring to fig. 2 to 3, the reduction mechanism of the electric capstan includes a reduction gearbox 1, a gear ring 2, and a reduction gearbox bracket 3, the gear ring 2 is located between the reduction gearbox 1 and the reduction gearbox bracket 3, and the gear ring 2 needs to be fixed to the reduction gearbox 1 and the reduction gearbox bracket 3, respectively. Because the reduction gearbox body 1, the gear ring 2 and the reduction gearbox support 3 are internally provided with other parts, sealing pieces 4 are arranged between the reduction gearbox body 1 and the gear ring 2 and between the gear ring 2 and the reduction gearbox support 3 so as to ensure good tightness among the three parts, and foreign matters such as external rainwater are prevented from entering the three parts to influence the normal operation of the other parts.

Referring to fig. 4 to 5, the seal member 4 includes a seal ring 41 and a seal strip 42. The sealing ring 41 is annular, the surface of the sealing ring 41 abutting against the reduction gearbox body 1, the gear ring 2 and the reduction gearbox support 3 is a sealing surface, the sealing strip 42 is arranged on the sealing surface of the sealing ring 41 in a protruding mode through a screen printing technology, and the sealing strip 42 extends for a circle along the circumferential direction of the sealing ring 41, so that the whole circle of sealing is realized.

Specifically, in order to fix the seal 4 between the reduction gearbox 1 and the ring gear 2 and between the ring gear 2 and the reduction gearbox holder 3, it is necessary to provide a plurality of through holes 43 in the seal ring 41, and the through holes 43 are circumferentially spaced apart from each other around the center of the seal ring 41. The sealing strip 42 includes a plurality of extending portions 421 and a plurality of bending portions 422, the extending portions 421 are disposed between the adjacent through holes 43, the bending portions 422 extend along the circumferential direction of the through holes 43, and two ends of the bending portions 422 are respectively fixed with the extending portions 421 at two sides of the through holes 43, so as to form a complete sealing strip 42. Due to the presence of the curved portion 422, the extending portion 421 and the center of the through hole 43 can be located on the same or similar circle, thereby reducing the radial length of the seal ring 41.

It is conceivable that a plurality of through holes 43 are required to be formed in the sealing ring 41, and certain safety distances are required between the through holes 43 and the sealing strip 42, between the through holes 43 and the peripheral edges of the sealing ring 41, and between the sealing strip 42 and the peripheral edges of the sealing ring 41, on the basis that if the sealing strip 42 is annular, the circle centers of the sealing strip 42 and the through holes 43 cannot necessarily be on the same or similar circle, and certain safety distances are required to be maintained between the sealing strip 42 and the through holes 43, so that the annular sealing strip 42 inevitably leads to a larger radial length of the sealing ring 41, i.e. a larger size of the sealing member 4. Therefore, in order to reduce the radial length of the sealing ring 41, in this embodiment, the sealing strip 42 is divided into an extension portion 421 and a curved portion 422, where the extension portion 421 and the center of the through hole 43 may be on the same or similar circle, so as to reduce the radial length of the sealing ring 41, and the curved portion 422 extends along the circumferential direction of the through hole 43 and is fixed with two sections of extension portions 421, so as to form the complete sealing strip 42.

In this embodiment, the extending portion 421 is arc-shaped and is located on the same circle as the center of each through hole 43, so as to further reduce the space occupied by the through holes 43 and the extending portion 421, thereby reducing the size of the sealing member 4. Furthermore, the bent portion 422 extends along the periphery of the through hole 43 near the center of the seal ring 41, i.e., the bent portion 422 is closer to the center of the seal ring 41 than the extending portion 421, which can reduce the outer diameter of the seal ring 41 and also facilitate the reduction of the size of the seal 4.

Specifically, the radial width of the sealing strip 42 along the sealing ring 41 is 1 mm-2 mm, the protruding height of the sealing strip 42 relative to the sealing ring 41 is 0.3 mm-1 mm, the reasonably arranged width and height facilitate the sealing element 4 to be arranged between the gear ring 2 and the reduction gearbox body 1 and between the gear ring 2 and the reduction gearbox bracket 3 in a abutting mode, and the sealing strip 42 under the width and the height can play a better sealing performance after being stressed and deformed.

Because the sealing member 4 is arranged between the reduction gearbox body 1 and the gear ring 2 and between the gear ring 2 and the reduction gearbox bracket 3 in a collision manner, good sealing performance is required on both sides of the sealing member 4, and for this purpose, sealing strips 42 are arranged on both sealing surfaces of the sealing ring 41, and the outline profiles of the two sealing strips 42 are consistent. When the sealing member 4 is stressed, both sealing strips 42 can deform, so that good sealing performance is ensured on both sides of the sealing member 4. Moreover, since the outer profiles of the two sealing strips 42 are identical, the stress on both sides of the sealing element 4 can be symmetrical, thereby preventing the sealing element 4 from being deformed maliciously.

The bending portion 422 extends along the circumferential direction of the through hole 43, in this embodiment, the distance between the bending portion 422 and the through hole 43 is 0.5 mm-2 mm, and the reasonably arranged distance can ensure that the bending portion 422 and the through hole 43 have better structural strength, and meanwhile, the space occupied by the bending portion 422 and the through hole 43 can be prevented from being too large. Furthermore, the distance between the bending part 422 and the inner wall of the sealing ring 41 is 0.5 mm-2 mm, and the reasonably arranged distance can be convenient for the bending part 422 to be arranged on the sealing ring 41 through the screen printing technology, and is also beneficial to the bending part 422 not to exceed the sealing ring 41 after being stressed and deformed, so that good sealing performance is ensured.

In this embodiment, the sealing strip 42 is formed on the sealing surface of the sealing ring 41 by screen printing, and the process is simple and convenient. In addition, the sealing ring 41 and the sealing strip 42 may be made of different materials, specifically, the sealing ring 41 is an oil-resistant asbestos-free rubber ring, the sealing strip 42 is a silica gel strip, that is, the sealing ring 41 is made of oil-resistant asbestos-free rubber, and the sealing strip 42 is made of silica gel. The oil-resistant asbestos-free rubber has better oil resistance, wear resistance and stable chemical property, can prevent the influence of engine oil on the sealing property, and has longer service life; the silica gel has better deformation performance and wear resistance, can be deformed under stress and can be restored to the original state when not being stressed, and has longer service life.

With reference to fig. 6 to 7, an annular step 11 is formed on the side surface of the reduction gearbox body 1 facing the gear ring 2, the diameter of the annular step 11 is matched with the inner diameter of the sealing element 4, namely, the sealing element 4 can be sleeved on the annular step 11, so that the installation of the sealing element 4 is realized, and the operation is simple and convenient. The gear ring 2 is fixed with the reduction gearbox body 1, the sealing piece 4 can be extruded by the gear ring 2 and the reduction gearbox body 1, and the sealing strip 42 of the sealing piece 4 can be deformed, so that a better sealing effect is achieved. It should be noted that, as is apparent from fig. 2, the ring gear 2 is hollow and annular, so that the size of the seal member 4 needs to match the ring gear 2, and if the size of the seal member 4 is too large, the mounting with the ring gear 2 is affected, so that in the present embodiment, the seal strip 42 is divided into the extending portion 421 and the bending portion 422 to prevent the seal member 4 from being too large.

Specifically, a plurality of connecting holes are formed in the reduction gearbox 1 and the gear ring 2, fasteners penetrate through the connecting holes and the through holes 43 in the sealing ring 41 to fix the reduction gearbox 1, the sealing element 4 and the gear ring 2, and the fasteners can fix the reduction gearbox 1, the sealing element 4 and the gear ring 2 into a whole to prevent the sealing element 4 from moving or twisting when being stressed, so that the tightness is affected.

The side that reduction gearbox support 3 is close to ring gear 2 is formed with annular mounting groove 31, and the size of annular mounting groove 31 matches with the size of sealing member 4, and sealing member 4 sets up in annular mounting groove 31 can realize the installation, easy operation is convenient. The reduction gearbox bracket 3 and the gear ring 2 are fixed, the reduction gearbox bracket 3 and the gear ring 2 can squeeze the sealing piece 4, and the sealing strip 42 of the sealing piece 4 can deform, so that a better sealing effect is achieved. It should be noted that the seal member 4 needs to be mounted in the annular mounting groove 31, and if the seal member 4 is oversized, the seal member 4 cannot be mounted in the annular mounting groove 31, so in this embodiment, the seal strip 42 is divided into the extending portion 421 and the bending portion 422 to prevent the seal member 4 from being oversized.

Specifically, a plurality of connecting holes are formed in the gear ring 2 and the gearbox bracket 3, fasteners penetrate through the connecting holes and the through holes 43 in the sealing ring 41 to fix the gear ring 2, the sealing element 4 and the gearbox bracket 3, and the fasteners can fix the gear ring 2, the sealing element 4 and the gearbox bracket 3 into a whole to prevent the sealing element 4 from moving or twisting when being stressed, so that the tightness is affected.

In addition to the above preferred embodiments, the present utility model has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the utility model, which shall fall within the scope of the utility model as defined in the appended claims.

Claims (10)

1. The waterproof sealing speed reducing mechanism of the electric winch comprises a speed reducing box body, a gear ring and a speed reducing box support which are fixed together and distributed in sequence, and is characterized in that sealing pieces are arranged between the speed reducing box body and the gear ring and between the gear ring and the speed reducing box support, each sealing piece comprises a sealing ring and a sealing strip arranged on a sealing surface of the sealing ring, and the sealing strip is provided with a circle along the circumferential direction of the sealing ring;

the sealing ring is provided with a plurality of through holes distributed along the circumferential direction at intervals, the sealing strip comprises an extension part positioned between two adjacent through holes and a bending part connected with the two adjacent extension parts, and the bending part is positioned outside the through holes and extends along the circumferential direction of the through holes.

2. The waterproof sealing speed reducing mechanism according to claim 1, wherein the extending portion is arc-shaped and is located on the same circle as the center of each through hole, and the bending portion is semicircular and is located on one side of the through hole close to the center of the sealing ring.

3. The waterproof sealing speed reducing mechanism according to claim 1, wherein the width of the sealing strip along the radial direction of the sealing ring is 1 mm-2 mm; and/or the protruding height of the sealing strip relative to the sealing ring is 0.3 mm-1 mm.

4. The waterproof sealing speed reducing mechanism according to claim 1, wherein sealing strips are arranged on two sealing surfaces of the sealing ring, and the outline of the two sealing strips is identical.

5. The waterproof sealing deceleration mechanism according to claim 1, wherein the distance between the bent portion and the through hole is 0.5mm to 2mm; and/or the distance between the bending part and the inner wall of the sealing ring is 0.5 mm-2 mm.

6. The waterproof seal speed reducing mechanism according to claim 1, wherein the seal strip is formed on the seal face of the seal ring by screen printing.

7. The waterproof seal speed reducing mechanism according to claim 1, wherein the speed reducing box body is provided with an annular step on one side facing the gear ring, and a sealing member between the speed reducing box body and the gear ring is sleeved outside the annular step and clamped between the speed reducing box body and the gear ring.

8. The waterproof sealing speed reducing mechanism according to claim 1, wherein the speed reducing box body and the gear ring are provided with a plurality of connecting holes, the speed reducing box body and the gear ring are fixed together through fasteners matched with the connecting holes, and the fasteners penetrate through holes in the sealing ring.

9. The waterproof seal speed reducing mechanism according to claim 1, wherein the speed reducing box support is provided with an annular mounting groove on an end face facing the gear ring, and a seal member between the gear ring and the speed reducing box support is provided in the annular mounting groove and is clamped between the gear ring and the speed reducing box support.

10. The waterproof seal speed reducing mechanism according to claim 1, wherein the gear ring and the speed reducing box support are provided with a plurality of connecting holes, the gear ring and the speed reducing box support are fixed together through fasteners matched with the connecting holes, and the fasteners penetrate through holes in the sealing ring.