CN216643031U - Concrete tank car reduction gear - Google Patents

Abstract

The utility model provides a concrete tank truck speed reducer which comprises a shell and a main flange, wherein a primary planetary gear train, a secondary planetary gear train and an output shaft are sequentially arranged in the shell from front to back, a secondary sun gear of the secondary planetary gear train is connected with a primary planet carrier of the primary planetary gear train, the output shaft and the secondary planet carrier of the secondary planetary gear train are integrally formed, a gear seat is arranged after the output shaft penetrates out of the shell, the gear seat is drum-shaped, an outer gear ring is arranged in the middle of the gear seat, the outer end wall of each tooth of the outer gear ring is arc-shaped, a first through hole is arranged in the middle of the main flange, the gear seat and the outer gear ring are both positioned in the first through hole, the first through hole comprises a first hole section from front to back, the gear seat comprises a second hole section and a third hole section, wherein an inner gear ring is arranged in the second hole section, the first hole section is matched with the front end of the gear seat, the third hole section is matched with the rear end of the gear seat, and the outer gear ring is meshed with the inner gear ring. Due to the adoption of the technical scheme, the possibility of damaging the speed reducer can be reduced.

Description

Concrete tank car reduction gear

Technical Field

The utility model belongs to the technical field of speed reducers, and particularly relates to a concrete tank truck speed reducer.

Background

During the concrete transportation process of the concrete tank truck, the stirring tank on the tank truck needs to be kept to rotate continuously to prevent the concrete from being separated during the transportation process. The hydraulic motor on the concrete tank car generally drives the agitator tank to rotate at present, is provided with the reduction gear between hydraulic motor and the agitator tank, slows down through the reduction gear to make the concrete tank car can not rotate too fast. In the concrete transportation process, under the condition that the road conditions are complicated, the agitator tank on the concrete tank car easily generates deflection, and at the moment, the agitator tank can cause very large bending force to the output shaft of the speed reducer, so that the speed reducer is easily damaged.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model provides a concrete tank car speed reducer.

The utility model aims to realize the purpose by the technical scheme, which comprises a shell and a main flange, wherein a primary planetary gear train, a secondary planetary gear train and an output shaft are sequentially arranged in the shell from front to back, the primary planetary gear train, the secondary planetary gear train and the output shaft are sequentially arranged in the shell from front to back, a primary sun gear of the primary planetary gear train is used for connecting a hydraulic motor of a concrete tank car, a secondary sun gear of the secondary planetary gear train is connected with a primary planet carrier of the primary planetary gear train, the output shaft and the secondary planet carrier of the secondary planetary gear train are integrally formed, a gear seat is arranged at the rear end of the output shaft after penetrating out of the shell, the gear seat is drum-shaped, an outer gear ring is arranged in the middle of the gear seat, the outer end wall of each tooth of the outer gear ring is arc-shaped, and a first through hole is arranged in the middle of the main flange, the gear seat and the outer gear ring are located in the first through hole, the first through hole comprises a first hole section, a second hole section and a third hole section from front to back, an inner gear ring is arranged in the second hole section, the first hole section is matched with the front end of the gear seat, the third hole section is matched with the rear end of the gear seat, and the outer gear ring is meshed with the inner gear ring.

Further, the casing includes procapsid and back casing, the detachable fixed connection of the rear end of procapsid and the front end of back casing, the fixed ring gear of one-level planetary gear train and procapsid integrated into one piece, the fixed ring gear of second grade planetary gear train's second grade and back casing integrated into one piece.

Further, a bearing is arranged between the shell and the output shaft, an outer ring of the bearing is fixed on the shell, and an inner ring of the bearing is fixed on the output shaft.

Furthermore, the rear end of the output shaft is detachably and fixedly connected to the gear seat.

Furthermore, the rear end of the output shaft is provided with an external spline, the middle part of the gear seat is provided with an internal spline, the external spline is meshed with the internal spline, the rear end of the output shaft is provided with a threaded section, and the threaded section penetrates through the gear seat and is screwed with a nut.

Further, the rear end of casing is equipped with the apron, the apron passes through bolted connection at the rear end of casing, the middle part of apron is equipped with the recess, be equipped with the second through-hole that supplies the output shaft to wear out in the recess, the cover is equipped with the oil blanket on the output shaft, the inner wall of oil blanket is inconsistent with the surface of output shaft, the outer wall of oil blanket is inconsistent with the lateral wall of recess.

Due to the adoption of the technical scheme, the utility model has the beneficial effects that:

the concrete tank truck speed reducer is connected with a flange plate on a stirring tank through a main flange, because the gear seat is drum-shaped, an outer gear ring is arranged in the middle of the gear seat, the outer end wall of each tooth of the outer gear ring is arc-shaped, a first through hole is arranged in the middle of the main flange, the gear seat and the outer gear ring are both positioned in the first through hole, the first through hole comprises a first hole section, a second hole section and a third hole section from front to back, an inner gear ring is arranged in the second hole section, the first hole section is matched with the front end of the gear seat, the third hole section is matched with the back end of the gear seat, the outer gear ring is meshed with the inner gear ring, all edges of the main flange can swing back and forth on the gear seat, and all edges of the main flange can swing back and forth on an output shaft. When the runout occurs to the stirring tank, the main flange can run out along with the stirring tank, so that the bending force to the output shaft can be reduced, the possibility of damage to the speed reducer can be reduced, and the service life of the speed reducer can be prolonged. At the moment, the part of the output shaft, which is positioned in the shell, does not need to be provided with a structure capable of deflecting, the output shaft and the secondary planet carrier of the secondary planetary gear train are directly integrally formed, when the secondary planet carrier and the output shaft are manufactured, the output shaft and the secondary planet carrier are integrally cast in a casting forming mode, the output shaft, the secondary planet carrier of the secondary planetary gear train and a linkage structure between the output shaft and the secondary planet carrier of the secondary planetary gear train are not required to be manufactured respectively, and the production cost of the concrete tank car reducer can be greatly reduced.

Drawings

FIG. 1 is a schematic structural view of a decelerator of a concrete tanker according to the present invention;

FIG. 2 is a front view of a concrete tanker retarder of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is an enlarged view of a in FIG. 3;

FIG. 5 is an enlarged view of b in FIG. 3;

FIG. 6 is a schematic view of a combined structure of a secondary planet carrier and an output shaft in the speed reducer of the concrete tank truck;

FIG. 7 is a schematic view of a combined structure of a gear seat and an external gear ring in the reducer of the concrete tank truck.

In the figure, 1, front case; 2. a rear housing; 3. an output shaft; 4. a primary sun gear; 5. a primary planet carrier; 6. a primary planetary gear; 7. a primary fixed gear ring; 8. a secondary sun gear; 9. A secondary planet carrier; 10. a secondary planetary gear; 11. a secondary fixed gear ring; 12. a gear seat; 13. an outer ring gear; 14. a first bore section; 15. a second bore section; 16. a third bore section; 17. an inner gear ring; 18. a first flange plate; 19. a second flange plate; 20. a bearing; 21. an external spline; 22. An internal spline; 23. a threaded segment; 24. a nut; 25. a cover plate; 26. a groove; 27. and (7) oil sealing.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below by combining the specific drawings.

As shown in fig. 1, the present invention includes a housing and a main flange, the housing includes a front housing 1 and a rear housing 2, the rear end of the front housing 1 is detachably and fixedly connected to the front end of the rear housing 2, specifically, a plurality of holes are uniformly arranged on the rear end edge of the front housing 1, a plurality of screw holes are uniformly arranged on the front end edge of the rear housing 2, the plurality of holes and the plurality of screw holes are aligned one to one, bolts are arranged in the holes, the screwing ends of the bolts penetrate through the holes and then are screwed in the screw holes, that is, the front housing 1 and the rear housing 2 are connected by the bolts, so as to realize the detachable and fixed connection of the front housing 1 and the rear housing 2.

As shown in fig. 2 and 3, a primary planetary gear train, a secondary planetary gear train and an output shaft 3 are sequentially arranged in the housing from front to back. The first-stage planetary gear train, the second-stage planetary gear train and the output shaft 3 are sequentially arranged in the shell from front to back, and the rear end of the output shaft 3 penetrates out of the rear end of the shell.

The primary planetary gear train comprises a primary sun gear 4, a primary planet carrier 5, three primary planetary gears 6 and a primary fixed gear ring 7. One-level fixed gear ring 7 fixed mounting is in procapsid 1, and three one-level planetary gear 6 are installed on one-level planet carrier 5, and three one-level planetary gear 6 all are located one-level fixed gear ring 7 and mesh with one-level fixed gear ring 7. The primary sun gear 4 is located between the three primary planet gears 6 and is meshed with all the three primary planet gears 6. The front end of the first-stage sun gear 4 is fixedly provided with a spline sleeve, and the front end of the first-stage sun gear 4 is connected with a hydraulic motor of the concrete tank truck through a spline. The hydraulic motor of the concrete tank truck drives the first-stage sun gear 4 to rotate, the first-stage sun gear 4 drives the three first-stage planetary gears 6 to rotate, the three first-stage planetary gears 6 perform planetary motion in the first-stage fixed gear ring 7, and then the first-stage planetary carrier 5 is driven to rotate, and first-stage speed reduction is realized through the first-stage planetary gear train. In other embodiments, the number of the primary planet gears 6 may be other than three.

Preferably, the first-stage fixed gear ring 7 is integrally formed with the front case 1, and if the first-stage fixed gear ring 7 is assembled with the front case 1 by pressing the first-stage fixed gear ring 7 into the front case 1 without separately manufacturing the front case 1 and the first-stage fixed gear ring 7, the front case 1 needs to be manufactured to have a relatively large thickness so as to prevent the front case 1 from being cracked when the first-stage fixed gear ring 7 is pressed into the front case 1. In the embodiment, the primary fixed gear ring 7 and the front housing 1 are integrally formed, so that the front housing 1 is not cracked, the front housing 1 can be made thinner, and the weight of the reducer provided by the utility model can be reduced.

The second grade planetary gear train includes second grade sun gear 8, second grade planet carrier 9, three second grade planetary gear 10, the fixed ring gear 11 of second grade, the fixed ring gear 11 fixed connection of second grade is in back casing 2, and three second grade planetary gear 10 is installed on second grade planet carrier 9, and three second grade planetary gear 10 all is located second grade fixed ring gear 11 in and meshes with second grade fixed ring gear 11. The secondary sun gear 8 is located between the three secondary planet gears 10 and meshes with all three secondary planet gears 10. The front end of the secondary sun gear 8 is connected with the primary planet carrier 5 through a spline. The rotation of one-level planet carrier 5 drives second grade sun gear 8 and rotates, and second grade sun gear 8 drives three second grade planetary gear 10 and rotates, and planetary motion is made in second grade fixed ring gear 11 to three second grade planetary gear 10, and then drives second grade planet carrier 9 and rotate, and second grade planet carrier 9 drives output shaft 3 and rotates, and then the agitator tank that drives the concrete tank car rotates. And the secondary speed reduction is realized through the secondary planetary gear train. In other embodiments, the secondary planet gears 10 may also be other numbers than three.

Preferably, the second-stage fixed gear ring 11 and the rear shell 2 are integrally formed, the second-stage fixed gear ring 11 does not need to be pressed into the rear shell 2 after the rear shell 2 and the second-stage fixed gear ring 11 are respectively manufactured, and if the second-stage fixed gear ring 11 and the rear shell 2 are assembled in a manner of pressing the second-stage fixed gear ring 11 into the rear shell 2, the rear shell 2 needs to be manufactured to be thick so as to prevent the rear shell 2 from being burst when the second-stage fixed gear ring 11 is pressed into the rear shell 2. In the embodiment, the two-stage fixed gear ring 11 and the rear shell 2 are integrally formed, so that the rear shell 2 is not cracked, the rear shell 2 can be made thinner, and the weight of the speed reducer provided by the utility model can be reduced.

As shown in fig. 3 and 4, output shaft 3 and second grade planet carrier 9 integrated into one piece of second grade planetary gear train, be equipped with gear seat 12 after the rear end of output shaft 3 wears out the casing, gear seat 12 is the cydariform, the middle part of gear seat 12 is equipped with outer ring gear 13, the outer end wall of each tooth of outer ring gear 13 is the arc, the middle part of main flange is equipped with first through-hole, gear seat 12 and outer ring gear 13 all are located first through-hole, first through-hole includes first hole section 14, second hole section 15 and third hole section 16 after the past, be equipped with ring gear 17 in the second hole section 15, first hole section 14 cooperates with the front end of gear seat 12, third hole section 16 cooperates with the rear end of gear seat 12, outer ring gear 13 meshes with ring gear 17 mutually.

The main flange comprises a first flange plate 18 and a second flange plate 19, the first flange plate 18 and the second flange plate 19 are connected through bolts, the first hole section 14 is located in the middle of the first flange plate 18, and the second hole section 15 and the third hole section 16 are located in the middle of the second flange plate 19. The first flange and the second flange 19 can be detached and separated, and the gear base 12 can be removed from the first through hole for replacement.

A bearing 20 is arranged between the shell and the output shaft 3, the outer ring of the bearing 20 is fixed on the shell, and the inner ring of the bearing 20 is fixed on the output shaft 3. The output shaft 3 is more stable in the rotating process and cannot rub against the shell.

The rear end of the output shaft 3 is detachably and fixedly connected to the gear seat 12. Specifically, the rear end of the output shaft 3 is provided with an external spline 21 (see fig. 6), the diameter of the external spline 21 is not larger than that of the output shaft 3, the middle part of the gear seat 12 is provided with an internal spline 22 (see fig. 7), the external spline 21 is engaged with the internal spline 22, the rear end of the output shaft 3 is provided with a threaded section 23, and the threaded section 23 penetrates through the gear seat 12 and is screwed with a nut 24. The output shaft 3 can be removed from the gear holder 12 by screwing the nut 24 off the threaded section 23, and the output shaft 3 can be mounted on the gear holder 12 by screwing the nut 24 on the threaded section 23 after the external spline 21 passes through the internal spline 22.

As shown in fig. 3 and 5, a cover plate 25 is arranged at the rear end of the housing, the cover plate 25 is connected to the rear end of the housing through a bolt, a groove 26 is formed in the middle of the cover plate 25, a second through hole for the output shaft 3 to penetrate out is formed in the groove 26, an oil seal 27 is sleeved on the output shaft 3, the inner wall of the oil seal 27 is abutted to the surface of the output shaft 3, and the outer wall of the oil seal 27 is abutted to the side wall of the groove 26. After the external spline 21 is taken out of the internal spline 22, that is, after the output shaft 3 is taken out of the gear seat 12, the cover plate 25 is taken out of the housing, and at the moment, the oil seal 27 can be taken out of the output shaft 3 for replacement, which is very convenient when the oil seal 27 is replaced.

The use principle is as follows: the reducer of the concrete tank truck is connected with the flange plate on the stirring tank through the second flange plate 19, because the gear seat 12 is drum-shaped, the middle part of the gear seat 12 is provided with the outer gear ring 13, the outer end wall of each tooth of the outer gear ring 13 is arc-shaped, the middle part of the main flange is provided with a first through hole, the gear holder 12 and the outer gear ring 13 are located in a first through hole comprising, from front to back, a first hole section 14, a second hole section 15 and a third hole section 16, an inner gear ring 17 is arranged in the second hole section 15, the first hole section 14 is matched with the front end of the gear seat 12, the third hole section 16 is matched with the rear end of the gear seat 12, and the outer gear ring 13 is engaged with the inner gear ring 17, so that each edge of the main flange can swing back and forth on the gear seat 12, that is, each edge of the main flange can swing back and forth on the output shaft 3. When the runout occurs to the stirring tank, the main flange can run out along with the stirring tank, so that the bending force to the output shaft 3 can be reduced, the possibility of damage to the speed reducer can be reduced, and the service life of the speed reducer can be prolonged. At this time, the part of the output shaft 3 located inside the shell does not need to be provided with a structure capable of deflecting, the output shaft 3 and the secondary planet carrier 9 of the secondary planetary gear train are directly integrally formed, when the secondary planet carrier 9 and the output shaft 3 are manufactured, the output shaft 3 and the secondary planet carrier 9 are integrally cast in a casting forming mode, the output shaft 3, the secondary planet carrier 9 of the secondary planetary gear train and a linkage structure between the output shaft 3 and the secondary planet carrier 9 do not need to be manufactured respectively, and the production cost of the concrete tank car reducer can be greatly reduced. And a linkage structure between the secondary planet carrier 9 and the output shaft 3 can be omitted, so that the weight of the concrete tank truck speed reducer can be reduced.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields, and are within the scope of the present invention.

Claims (6)

1. The utility model provides a concrete tank car reduction gear which characterized in that: including casing and main flange, one-level planetary gear train, second grade planetary gear train and output shaft have set gradually after to in the casing in the past, one-level planetary gear train, second grade planetary gear train and output shaft set gradually in the casing after to in the past, one-level sun gear of one-level planetary gear train is used for connecting the hydraulic motor of concrete tank car, the one-level planet carrier of one-level planetary gear train is connected to second grade sun gear of second grade planetary gear train, output shaft and second grade planetary gear train's second grade planet carrier integrated into one piece, be equipped with the pinion stand after the casing is worn out to the rear end of output shaft, the pinion stand is the cydariform, the middle part of pinion stand is equipped with outer ring gear, the outer end wall of every tooth of outer ring gear is the arc, the middle part of main flange is equipped with first through-hole, pinion stand and outer ring gear all are located first through-hole, first through-hole includes first hole section after to in the past, The gear seat comprises a second hole section and a third hole section, wherein an inner gear ring is arranged in the second hole section, the first hole section is matched with the front end of the gear seat, the third hole section is matched with the rear end of the gear seat, and the outer gear ring is meshed with the inner gear ring.

2. A concrete tanker retarder according to claim 1, characterized in that: the casing includes procapsid and back casing, the detachable fixed connection of the rear end of procapsid and the front end of back casing, the fixed ring gear of one-level planetary gear train and procapsid integrated into one piece, the fixed ring gear of second grade planetary gear train's second grade and back casing integrated into one piece.

3. A concrete tanker retarder according to claim 1, characterized in that: a bearing is arranged between the shell and the output shaft, an outer ring of the bearing is fixed on the shell, and an inner ring of the bearing is fixed on the output shaft.

4. A concrete tanker retarder according to claim 1, characterized in that: the rear end of the output shaft is detachably and fixedly connected to the gear seat.

5. The concrete tanker retarder of claim 4, wherein: the rear end of the output shaft is provided with an external spline, the middle part of the gear seat is provided with an internal spline, the external spline is meshed with the internal spline, the rear end of the output shaft is provided with a threaded section, and the threaded section penetrates through the gear seat and is screwed with a nut.

6. The concrete tanker retarder of claim 4, wherein: the rear end of casing is equipped with the apron, the apron passes through bolted connection at the rear end of casing, the middle part of apron is equipped with the recess, be equipped with the second through-hole that supplies the output shaft to wear out in the recess, the cover is equipped with the oil blanket on the output shaft, the inner wall of oil blanket is inconsistent with the surface of output shaft, the outer wall of oil blanket is inconsistent with the lateral wall of recess.

Images