CN217502515U

CN217502515U - Split type self-reducing chain wheel assembly

Info

Publication number: CN217502515U
Application number: CN202221654553.5U
Authority: CN
Inventors: 孙建萍
Original assignee: Shanxi Jinggong Tianyou Coal Mine Machinery Manufacturing Co ltd
Current assignee: Shanxi Jinggong Tianyou Coal Mine Machinery Manufacturing Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-09-27
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a split type self-reducing chain wheel component, belonging to the technical field of chain wheel components; the chain wheel comprises a chain wheel body, wherein one end, provided with an external spline, of a chain wheel shaft is inserted into a spline groove of the chain wheel body, the other end of the chain wheel shaft is rotatably connected into a bearing seat body through a bearing, a floating seal seat is arranged between the bearing seat body and the chain wheel body, and a pair of floating oil seals is arranged between the floating seal seat and the bearing seat body; the right side of the sprocket body is provided with a speed reduction assembly, the speed reduction assembly comprises an inner gear ring, a left end cover and a right end cover, a planet carrier is arranged in the inner gear ring, a planetary gear on the planet carrier is meshed with the inner gear ring, a gear input shaft extends into the inner gear ring from an opening in the right end cover, a sun gear at the extending end is meshed with the planetary gear, one end of the planet carrier, which is close to the sprocket body, is fixedly provided with an output shaft, the outer side surface of the output shaft is provided with an external spline, and the output shaft is inserted into a spline groove of the sprocket body from the right side; the problem of current supporting permanent-magnet machine direct-connected sprocket assembly that uses in the pit occupation space great is solved.

Description

Split type self-reducing chain wheel assembly

Technical Field

The utility model belongs to the technical field of the sprocket subassembly, concretely relates to split type self-reducing sprocket subassembly.

Background

In the existing chain wheel assembly, bearing seats are arranged on two sides of a chain wheel body, and a chain wheel shaft rotates inside the bearing seats to drive the chain wheel body to work by fixing the bearing seats on headstock on the two sides. The chain wheel shaft is connected with the speed reducer, the speed reducer is connected with the motor, the occupied space of the chain wheel assembly, the speed reducer and the motor is large, the underground space is limited, the chain wheel assembly cannot be completely placed under some special conditions, and normal underground production is affected. If the permanent magnet motor direct-connection chain wheel assembly is used in a matched mode, a matched speed reducer is needed to increase the torque, the width of the speed reducer is wider than that of the existing matched motor speed reducer, and the width of a roadway is insufficient.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides a split type self-reducing chain wheel component; the problem of the current supporting permanent-magnet machine direct-connected sprocket assembly that uses in the pit occupation space is great is solved.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

A split type self-reducing chain wheel assembly comprises a chain wheel body penetrating through a spline groove, wherein an external spline is arranged at one end of a chain wheel shaft, one end of the external spline of the chain wheel shaft is inserted into the spline groove of a chain wheel body from the left side, the other end of the chain wheel shaft is rotatably connected into a bearing seat body through a bearing, a floating seal seat is arranged between the bearing seat body and the chain wheel body, and a pair of floating oil seals is arranged between the floating seal seat and the bearing seat body; the right side of the sprocket body is provided with a speed reduction assembly, the speed reduction assembly comprises an inner gear ring, a left end cover and a right end cover, a planet carrier is arranged in the inner gear ring, a planetary gear on the planet carrier is meshed with the inner gear ring, a gear input shaft extends into the inner gear ring from an opening in the right end cover, a sun gear is fixedly arranged at the extending end, the sun gear is meshed with the planetary gear, an output shaft is fixedly arranged at one end, close to the sprocket body, of the planet carrier, the outer side surface of the output shaft is provided with an external spline, and the output shaft is inserted into a spline groove of the sprocket body from the right side.

Furthermore, a plurality of pin holes are respectively and evenly formed in the left end face of the chain wheel body along the circumference, a plurality of pin holes are evenly formed in the right end face of the floating seal seat along the circumference, the pin holes in the floating seal seat are in one-to-one butt joint with the pin holes in the left end face of the chain wheel body, and the same pin shaft is inserted into the two butt joint pin holes.

Furthermore, a circle of annular positioning steps are arranged on the outer side face of the chain wheel shaft on the left side of the external spline, a circumferential annular groove is formed in the inner edge of the end face of the right side of the floating seal seat, and the positioning steps on the chain wheel shaft are inserted into the annular groove of the floating seal seat.

Furthermore, a gland is arranged on the left end face of the chain wheel shaft, the outer diameter of the gland is larger than that of the chain wheel shaft, the gland is fixed on the left end face of the left half shaft through a fixing bolt, and the gland is in contact with the left end face of the bearing.

Furthermore, an end cover is fixed on the left side of the bearing seat body through a bolt.

Furthermore, the left end cover, the right end cover and the inner gear ring are all of cylindrical structures, the outer diameters of the left end cover, the right end cover and the inner gear ring are equal, and the outer diameters of the left end cover, the right end cover and the inner gear ring are equal to the outer diameter of the bearing seat; the left end cover and the right end cover are respectively positioned at two sides of the inner gear ring, and the left end cover, the inner gear ring and the right end cover are sequentially and fixedly connected together through bolts uniformly arranged on the periphery.

Furthermore, an internal spline is arranged on the end face of one end of the outer side of the gear input shaft and is fixedly connected with the output shaft of the permanent magnet motor through the internal spline.

Furthermore, two ends of the planet carrier are respectively and rotationally connected with the openings of the left end cover and the right end cover through bearings.

Further, the external splines of the output shaft of the reduction assembly mesh with the external splines inside the sprocket body, and the left end face of the output shaft contacts the right end face of the sprocket shaft.

The utility model discloses produced beneficial effect for prior art does:

(1) the utility model provides a split type self-decelerating sprocket assembly replaces the right side bearing frame of current sprocket assembly for the speed reduction assembly, with the direct integration of planetary reducer on sprocket assembly, need not additionally to set up the reduction gear again, has reduced the space that uses permanent-magnet machine direct-connected sprocket assembly to occupy so greatly for use permanent-magnet machine direct-connected sprocket assembly can adapt to constrictive operating environment in the pit more.

(2) The utility model provides a split type self-decelerating sprocket assembly, when sprocket assembly breaks down in the pit, can directly pull down left side assembly, the sprocket body, the speed reduction assembly in proper order, will break down the part carry on fast spare part replacement can, need not to transport again and maintain in the pit, saved maintenance duration and downtime greatly, improved production efficiency, reduced the loss that the shut down brought.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is an enlarged partial schematic view at B of FIG. 1;

the device comprises a sprocket body 1, a spline groove 2, a sprocket shaft 3, a bearing seat body 4, a floating seal seat 5, a floating oil seal 6, a pin hole 7, a pin shaft 8, a gland 9, an end cover 10, a gear input shaft 11, a planet carrier 12, an output shaft 13, a left end cover 14, an inner gear ring 15, a right end cover 16, a sun gear 17 and a planetary gear 18.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in fig. 1-3, the utility model provides a split type self-decelerating sprocket assembly, including sprocket shaft 3, left bearing frame, sprocket body 1, the speed reduction assembly on right side.

The sprocket body 1 is an integral sprocket body 1, a through hole with two through sides is formed in the axis direction of the sprocket body 1, and a spline groove 2 is formed in the inner wall of the through hole.

The outer spline is arranged on one section of the outer side surface on the right side of the chain wheel shaft 3, one end of the outer spline of the chain wheel shaft 3 is inserted into the spline groove 2 of the chain wheel body 1 from the left side of the chain wheel body 1, and the length of the outer spline of the chain wheel shaft 3 inserted into the inside of the chain wheel body 1 is half of the length of the spline groove 2 of the chain wheel body 1.

A plurality of pin holes 7 are uniformly arranged on the left end surface of the sprocket body 1 along the circumference.

The bearing frame sets up in the left side of sprocket body 1, including bearing frame body 4 and floating seal seat 5, the contact jaw between bearing frame body 4 and the floating seal seat 5 is provided with a pair of floating oil blanket 6. The floating seal seat 5 is arranged on the right side of the bearing seat body 4, and the left side end face of the right side end face sprocket body 1 of the floating seal seat 5 is in contact with the left side end face of the sprocket body.

The right end face of the floating seal seat 5 is of a plane structure, a plurality of pin holes 7 are uniformly formed in the right end face of the floating seal seat along the circumference, and the pin holes 7 in the floating seal seat 5 are equal in number and correspond to the pin holes 7 in the left end face of the sprocket body 1 one by one. When the right end face of the floating seal seat 5 is contacted with the left end face of the sprocket body 1, pin holes 7 on the floating seal seat 5 are in one-to-one butt joint with the pin holes 7 on the left end face of the sprocket body 1, and the same pin shaft 8 is inserted into the two butt joint pin holes 7.

The sprocket shaft 3 is provided with a circle of positioning steps on the outer side surface on the left side of the external spline, the positioning steps are of annular convex structures, and the outer diameter of each positioning step is larger than that of the sprocket shaft 3. The inner edge of the end face of the right side of the floating seal seat 5 is provided with a circumferential annular groove, the depth of the annular groove is larger than the length of the positioning step, and the inner diameter of the annular step is slightly larger than the outer diameter of the positioning step. Bearing frame body 4 rotates through the bearing and connects in the left end of sprocket shaft 3, and the location step on the sprocket shaft 3 is pegged graft inside the annular groove of floating seal seat 5, carries on spacingly through the location step for floating seal seat 5 can't be to the right side removal and drop from sprocket shaft 3.

The left end face of the sprocket shaft 3 is provided with a gland 9, the outer diameter of the gland 9 is larger than that of the sprocket shaft 3, the gland 9 is fixed on the left end face of the left half shaft through a fixing bolt, and the gland 9 is in contact with the left end face of the bearing, so that the bearing is prevented from falling off from the left side of the sprocket shaft 3.

An end cover 10 is fixed to the left side of the bearing housing body 4 by a bolt, and the left side region of the sprocket shaft 3 is completely closed by the end cover 10. Thus, the sprocket shaft 3, the bearing seat, the bearing and the end cover 10 form a left side assembly.

The speed reduction assembly is a planetary speed reduction mechanism and comprises a left end cover 14, a right end cover 16, an inner gear ring 15, an input gear shaft, an output shaft 13, a sun gear 17, a planet gear and a planet carrier 12.

The left end cover 14, the right end cover 16 and the inner gear ring 15 are all of cylindrical structures, the outer diameters of the left end cover, the right end cover and the inner gear ring are equal, and the outer diameters of the left end cover, the right end cover and the inner gear ring are equal to the outer diameter of the bearing seat. The left end cover 14 and the right end cover 16 are respectively positioned at two sides of the inner gear ring 15, and the left end cover 14, the inner gear ring 15 and the right end cover 16 are sequentially and fixedly connected together through bolts uniformly arranged on the periphery.

The planet carrier 12 is arranged inside the inner gear ring 15, three planet gears 18 are uniformly connected to the planet carrier 12 along the circumference in a rotating mode, and the three planet gears 18 are all meshed with the inner side face of the inner gear ring 15.

The input gear shaft extends into the inner gear ring 15 from an opening on the right end cover 16, and a sun gear 17 is fixedly arranged at the extending end, the sun gear 17 is respectively meshed with three surrounding planetary gears 18, and the three planetary gears 18 are driven to rotate by the rotation of the input gear shaft. An internal spline is arranged on the end face of one end of the outer side of the gear input shaft 11, and the gear input shaft 11 is driven to rotate through the permanent magnet motor by fixedly connecting the internal spline with an output shaft of the permanent magnet motor.

The two ends of the planet carrier 12 are rotatably connected with the openings of the left end cover 14 and the right end cover 16 through bearings respectively. An output shaft 13 is fixedly arranged on the end face of one end, close to the sprocket body 1, of the planet carrier 12, and an external spline is arranged on the outer side face of the output shaft 13. The external splines of the output shaft 13 mesh with the external splines inside the sprocket body 1, and the left end face of the output shaft 13 is in contact with the right end face of the sprocket shaft 3.

During installation, the gear input shaft 11 of the speed reduction assembly is butted with the output shaft of the permanent magnet motor, so that the permanent magnet motor can drive the gear input shaft 11 to rotate. The right left end cap 14, the ring gear 15 and the right end cap 16 are then fixed by the right headstock so that the output shaft 13 of the reduction assembly can rotate inside the headstock.

Then, the sprocket body 1 is sleeved on an output shaft 13 of the speed reduction assembly, the pin shaft 8 is inserted into the pin hole 7 on the left end face of the sprocket body 1, then, the external spline of the sprocket shaft 3 of the left assembly is inserted into the spline groove 2 of the sprocket body 1, the pin shaft 8 is ensured to be inserted into the pin hole 7 of the floating seal seat 5, and the left end face of the sprocket body 1 is in contact with the right end face of the floating seal seat 5, so that the sprocket body 1 is connected with the floating seal seat 5 on the left side, and the floating seal seat 5 and the sprocket body 1 can synchronously rotate through the pin shaft 8.

And finally, fixing the outer side surface of the bearing seat body 4 of the left assembly through a left headstock, so that the chain wheel component is completely fixed in the axial direction.

The permanent magnet motor drives the gear input shaft 11 to rotate, and the gear input shaft 11 forms speed reduction through the mutual matching of the sun gear 17, the planetary gear 18 and the inner gear ring 15 to drive the output shaft 13 of the speed reduction assembly to rotate. The chain wheel shaft 3 and the output shaft 13 of the speed reducing assembly are connected with the chain wheel body 1 through external splines, so that the chain wheel shaft 3, the output shaft 13 of the speed reducing assembly and the chain wheel body 1 rotate synchronously through spline matching. Since the sprocket shaft 3 is rotatably connected inside the bearing housing body 4, the bearing housing body 4 is fixed by the left head frame, so that the sprocket shaft 3 rotates inside the stationary bearing housing body 4. Therefore, the function that the permanent magnet motor drives the chain wheel body 1 to rotate through the speed reducing assembly and the chain wheel shaft 3 is realized.

When the chain wheel assembly breaks down underground, the left headstock and the bearing seat body 4 are fixed and the right headstock and the left end cover 14, the inner gear ring 15 and the right end cover 16 are fixed, so that the left assembly, the chain wheel body 1 and the speed reduction assembly can be sequentially detached, damaged parts are quickly replaced and installed again, the chain wheel assembly can continuously work without being transported back to the ground for maintenance, the maintenance time and the underground downtime are greatly reduced, and the production efficiency is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A split self-reducing sprocket assembly, comprising: the chain wheel comprises a chain wheel body (1) which is provided with a spline groove (2) in a penetrating manner, one end of a chain wheel shaft (3) is provided with an external spline, one end of the external spline of the chain wheel shaft (3) is inserted into the spline groove (2) of the chain wheel body (1) from the left side, the other end of the chain wheel shaft (3) is rotatably connected into a bearing seat body (4) through a bearing, a floating seal seat (5) is arranged between the bearing seat body (4) and the chain wheel body (1), and a pair of floating oil seals (6) is arranged between the floating seal seat (5) and the bearing seat body (4); the right side of the sprocket body (1) is provided with a speed reducing assembly, the speed reducing assembly comprises an inner gear ring (15), a left end cover (14) and a right end cover (16), a planet carrier (12) is arranged inside the inner gear ring (15), a planetary gear (18) on the planet carrier (12) is meshed with the inner gear ring (15), a gear input shaft (11) extends into the inner gear ring (15) from an opening in the right end cover (16), a sun gear (17) is fixedly arranged at the extending end part, the sun gear (17) is meshed with the planetary gear (18), one end, close to the sprocket body (1), of the planet carrier (12) is fixedly provided with an output shaft (13), the outer side surface of the output shaft (13) is provided with an external spline, and the output shaft (13) is inserted into a spline groove (2) of the sprocket body (1) from the right side.

2. The split self-reducing sprocket assembly of claim 1, wherein: the chain wheel comprises a chain wheel body (1), a plurality of pin holes (7) are uniformly formed in the left end face of the chain wheel body (1) along the circumference, a plurality of pin holes (7) are uniformly formed in the right end face of a floating seal seat (5) along the circumference, the pin holes (7) in the floating seal seat (5) are in butt joint with the pin holes (7) in the left end face of the chain wheel body (1) one by one, and the same pin shaft (8) is inserted into the two butt joint pin holes (7).

3. The split self-reducing sprocket assembly of claim 1, wherein: the outer side face of the left side of the external spline of the sprocket shaft (3) is provided with a circle of annular positioning steps, the inner edge of the right side end face of the floating seal seat (5) is provided with a circle of annular groove, and the positioning steps on the sprocket shaft (3) are inserted into the annular groove of the floating seal seat (5).

4. The split self-reducing sprocket assembly according to claim 3, wherein: be provided with gland (9) on the left side terminal surface of sprocket shaft (3), the external diameter of gland (9) is greater than the external diameter of sprocket shaft (3), and gland (9) pass through fixing bolt to be fixed on the left side terminal surface of left semi-axis to gland (9) contact with the left side terminal surface of bearing.

5. The split self-reducing sprocket assembly according to claim 4, wherein: an end cover (10) is fixed on the left side of the bearing seat body (4) through a bolt.

6. The split self-reducing sprocket assembly of claim 1, wherein: the left end cover (14), the right end cover (16) and the inner gear ring (15) are all of cylindrical structures, the outer diameters of the left end cover, the right end cover and the inner gear ring are equal, and the outer diameters of the left end cover, the right end cover and the inner gear ring are equal to the outer diameter of the bearing seat; the left end cover (14) and the right end cover (16) are respectively positioned at two sides of the inner gear ring (15), and the left end cover (14), the inner gear ring (15) and the right end cover (16) are sequentially and fixedly connected together through bolts uniformly arranged on the periphery.

7. The split self-reducing sprocket assembly of claim 1, wherein: an inner spline is arranged on the end face of one end of the outer side of the gear input shaft (11), and the gear input shaft is fixedly connected with an output shaft of the permanent magnet motor through the inner spline.

8. The split self-reducing sprocket assembly as set forth in claim 1, wherein: two ends of the planet carrier (12) are respectively and rotationally connected with the openings of the left end cover (14) and the right end cover (16) through bearings.

9. The split self-reducing sprocket assembly of claim 1, wherein: the external splines of the output shaft (13) of the speed reducing assembly are meshed with the external splines inside the chain wheel body (1), and the left end face of the output shaft (13) is contacted with the right end face of the chain wheel shaft (3).