CN216589786U

CN216589786U - Cutting speed reducer of transverse shaft digging and mining machine

Info

Publication number: CN216589786U
Application number: CN202123006307.7U
Authority: CN
Inventors: 邹杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-24
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a cutting reducer of a cross shaft excavating machine, which is mainly used for a cutting part for rapidly tunneling underground and strip mines and recovering corner coal; the cutting speed reducer is in a cross shaft split type and is formed by connecting two symmetrically arranged single speed reducers through a left connecting flange and a right connecting flange, the tooth forms of a small bevel gear and a large bevel gear of each single speed reducer are in a straight tooth type, a side roller of each cutting speed reducer transmits torque through a square block of an output connecting seat, a floating seal is in a combined seal structure type, and a floating seal seat is in a detachable structure; the utility model can independently replace the damaged single-side part, thereby reducing the maintenance difficulty and the maintenance cost, reducing the assembly and disassembly difficulty of the side roller, and improving the service life of the floating seal and the replacement efficiency of the floating seal seat.

Description

Cutting speed reducer of transverse shaft digging and mining machine

Technical Field

The utility model relates to coal mine excavation equipment, in particular to a cutting reducer of a transverse shaft excavating machine.

Background

Currently, the problem of coal mining unbalance in China is prominent, and in recent years, equipment such as a transverse shaft mining machine and the like is vigorously developed due to the fact that the footage speed is high in order to rapidly increase the footage speed. However, the cutting reducer of the mining machine is taken as the most key core part, and the problems of high failure rate, high unit price, high maintenance and replacement cost and the like exist at present, and the defects in the structural aspect are as follows:

1. the cutting speed reducer of the traditional cross shaft excavating and mining machine is of an integral structure, double motors are symmetrically and rotatably input to input shaft ends on two sides of the cutting speed reducer, three sections of rollers are driven to cut after three-stage speed reduction, the whole speed reducer needs to be replaced after the cutting speed reducer is damaged, the size of the whole cutting speed reducer is large, the storage and maintenance cost is high, and the replacement is very inconvenient;

2. the traditional edge roller is difficult to assemble and disassemble: the traditional matching mode of the inner cylinder of the edge roller and the outer cylinder of the outer connecting cylinder is used as a positioning mode, the edge roller transmits torque through four groups of flat keys arranged on the outer connecting cylinder, the edge roller is very difficult to assemble and disassemble in the connecting mode, and after the edge roller is used for a period of time, the situation that the edge roller is difficult to disassemble or even cannot be disassembled frequently occurs due to water mist erosion caused by cutting;

3. the service life of the floating seal of the cutting reducer of the traditional transverse shaft excavating machine is short, and the damage fault of oil leakage of the floating seal often occurs;

4. when floating seal damages, often can destroy the seal receptacle that floats, leads to the seal receptacle that floats to need to be changed, because the seal receptacle is the body member, changes the maintenance and need disassemble whole reduction gear, and maintenance cost is high, change the difficulty.

In view of the foregoing, there is a need for a cutting reducer for a cross-shaft mining machine that is structurally stable, easy to maintain and replace, and low in maintenance cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cutting reducer of a transverse shaft excavating machine, which can be independently replaced after a single-side part is damaged, reduce the maintenance difficulty and the maintenance cost, reduce the assembly and disassembly difficulty of a side roller, and improve the service life of a floating seal and the replacement efficiency of a floating seal seat.

In order to achieve the purpose, the utility model provides a cutting reducer of a transverse shaft excavating machine, which is in a transverse shaft split type and is formed by connecting two symmetrically arranged single reducers 18 through a left connecting flange 20 and a right connecting flange 20; the two single reducers 18 are respectively and symmetrically arranged at the left side and the right side of the cutting arm support 24, and the input shaft 2 is arranged on the side, located on the mounting surface, of each single reducer 18 and is used for being connected with a cutting motor; the single reducer 18 comprises a single reducer shell 8, a three-level speed reducing structure and a spindle 17 are arranged inside the single reducer shell 8, and the single reducer 18 transmits the input torque of the cutting motor on the input shaft 2 to the spindle 17 through the internal three-level speed reducing structure; the inner side end of the main shaft 17 is provided with a middle connecting seat 16, the middle connecting seats 16 of the two single reducers 18 are connected through a left connecting flange 20 and a right connecting flange 20, and a middle roller 21 is driven to rotate through a second flat key 19 for cutting operation; the outer side of the main shaft 17 extends out of the single reducer casing 8, the outer side of the main shaft 17 is connected with an output connecting seat 9 through matching of an inner spline and an outer spline, the output connecting seat 9 is fixedly connected with an outer connecting cylinder 10, the outer connecting cylinder 10 rotates under the transmission of the main shaft 17, a square block is arranged at the end part of the output connecting seat 9, the square block of the output connecting seat 9 is matched with a square hole of the edge roller 22 to transmit torque, and therefore the edge roller 22 and the middle roller 21 are driven to rotate together to perform cutting operation.

Further, the three-stage speed reducing structure comprises a first-stage parallel tooth 3, a second-stage parallel tooth 4, a small bevel gear 6 and a large bevel gear 7; the cutting motor inputs torque through the input shaft 2, and is meshed through the first-stage parallel teeth 3 and the second-stage parallel teeth 4 to form first-stage speed reduction, internal splines of the second-stage parallel teeth 4 drive the small bevel gear 6, the small bevel gear 6 is meshed with the large bevel gear 7 to form second-stage speed reduction, and the large bevel gear 7 is transmitted to the main shaft 17 through planetary speed reduction through the internal splines to form third-stage speed reduction.

Furthermore, the tooth forms of the small bevel gear 6 and the large bevel gear 7 both adopt straight tooth forms.

Furthermore, two rows of mounting holes are formed in the mounting surface of the single speed reducer 18, and the two rows of mounting holes are vertically and symmetrically arranged relative to the center line of the input shaft 2; the mounting surface of the single reducer 18 is also provided with an input end cover 1 and a first flat key 5, and the single reducer 18 is matched with the first flat key 5 through the input end cover 1 and is independently positioned and connected with the cutting arm support 24.

Further, the tolerance between the outer cylinder of the outer connecting cylinder 10 and the inner cylinder of the edge roller 22 is clearance fit.

Further, a bearing seat 15 is fixed on the single speed reducer housing 8, a bearing 23 is installed on the bearing seat 15, and the outer connecting cylinder 10 is supported on the bearing seat 15 through the bearing 23.

Further, a sealing assembly is arranged between the outer connecting cylinder 10 and the bearing seat 15, and the sealing assembly comprises a dynamic sealing seat 11 installed on the outer connecting cylinder 10, a static sealing seat 14 installed on the bearing seat 15, a floating seal 12 and a combined seal formed by combining a labyrinth seal arranged on the outer side of the floating seal 12 and an outer seal 13.

The utility model has the following beneficial effects:

1. the cutting reducer of the cross shaft excavating machine provided by the utility model consists of two single reducers, so that the left and right complete interchange can be realized, the single reducers are convenient to maintain and replace, and the storage cost is greatly reduced;

2. according to the utility model, the single speed reducer is connected with one side of the side roller, torque is transmitted to the side roller through the square block of the output connecting seat, and the tolerance of the inner cylinder of the side roller and the outer cylinder of the outer connecting cylinder is a clearance fit mode, so that the problem of difficulty in dismounting the side roller is solved;

3. the labyrinth seal and outer seal combined seal type is arranged on the outer side of the floating seal of the single speed reducer, so that the problem that the floating seal is frequently damaged is effectively solved;

4. according to the utility model, the movable sealing seat and the static sealing seat on the movable and static sides of the floating seal of the single speed reducer are detachable, so that the replacement is convenient, and the maintenance cost is low.

Drawings

FIG. 1 is a schematic structural view of one embodiment of a cutting decelerator of a cross-axle mining machine provided in accordance with the present invention;

FIG. 2 is a cross-sectional view of the unitary retarder of FIG. 1;

FIG. 3 is a side view of the unitary retarder of FIG. 1;

FIG. 4 is a schematic mounting surface view of the cell retarder of FIG. 1;

FIG. 5 is an enlarged view taken at K in FIG. 2;

in the figure: 1. an input end cap; 2. an input shaft; 3. primary parallel teeth; 4. secondary parallel teeth; 5. a first flat key; 6. a bevel pinion gear; 7. a large bevel gear; 8. a single reducer housing; 9. an output connecting base; 10. an outer connecting cylinder; 11. a dynamic seal seat; 12. floating sealing; 13. sealing outside; 14. a static seal seat; 15. a bearing seat; 16. an intermediate coupling seat; 17. a main shaft; 18. a single reducer; 19. a second flat key; 20. a left connecting flange and a right connecting flange; 21. a middle drum; 22. an edge roller; 23. a bearing; 24. a cutting arm support.

Detailed Description

The utility model is described in detail below with reference to the figures and examples.

As shown in fig. 1 to 3, a cutting reducer of a transverse shaft excavating machine is in a transverse shaft split type and is formed by connecting two symmetrically arranged single reducers 18 through a left connecting flange 20 and a right connecting flange 20; the two single reducers 18 are respectively and symmetrically arranged at the left side and the right side of the cutting arm support 24, and the input shaft 2 is arranged on the side, located on the installation surface, of the single reducers 18 and is used for being connected with a cutting motor; the single reducer 18 comprises a single reducer shell 8, a three-stage speed reducing structure and a spindle 17 are arranged inside the single reducer shell 8, and the single reducer 18 transmits the input torque of the cutting motor on the input shaft 2 to the spindle 17 through the internal three-stage speed reducing structure; the middle connecting seats 16 are arranged at the inner side ends of the main shafts 17, the middle connecting seats 16 of the two single reducers 18 are connected through left and right connecting flanges 20, and the middle roller 21 is driven to rotate through a second flat key 19 for cutting operation; the outer side of the main shaft 17 extends out of the single speed reducer shell 8, the outer side of the main shaft 17 is connected with an output connecting seat 9 through an internal spline and an external spline in a matching mode, the output connecting seat 9 is fixedly connected with an external connecting cylinder 10, the external connecting cylinder 10 rotates under the transmission of the main shaft 17, a square block is arranged at the end part of the output connecting seat 9, the square block of the output connecting seat 9 is matched with a square hole of the side roller 22 to transmit torque, and therefore the side roller 22 and the middle roller 21 are driven to rotate together to perform cutting operation; the square block of the connecting seat 9 is mainly used for transmitting the output torque to the side roller 22 to drive the side roller 22 to rotate, and the outer cylinder of the outer connecting cylinder 10 supports the inner cylinder of the side roller 22, so that the side roller 22 can stably cut, the traditional flat key connection mode is changed, and the problem of difficulty in assembly and disassembly is solved.

In the embodiment of the utility model, the three-stage speed reducing structure comprises a primary parallel tooth 3, a secondary parallel tooth 4, a small bevel gear 6 and a large bevel gear 7; the torque is input through the input shaft 2 to the cutting motor, the first-stage speed reduction is formed by meshing the first-stage parallel teeth 3 and the second-stage parallel teeth 4, the small bevel gear 6 is driven by the internal spline of the second-stage parallel teeth 4, the small bevel gear 6 is meshed with the large bevel gear 7 to form the second-stage speed reduction, and the large bevel gear 7 is transmitted to the spindle 17 through the internal spline to form the third-stage speed reduction through planetary speed reduction.

In the embodiment of the utility model, the tooth forms of the small bevel gear 6 and the large bevel gear 7 are straight tooth forms, the tooth forms can meet the requirements of forward rotation and reverse rotation, the strength requirements of the gears can be met by the forward rotation and the reverse rotation, and therefore the left-right interchange of the two single speed reducers 18 can be realized.

In the embodiment of the utility model, two rows of mounting holes are formed on the mounting surface of the single speed reducer 18, and the two rows of mounting holes are vertically and symmetrically arranged relative to the central line of the input shaft 2; the mounting surface of the single reducer 18 is also provided with an input end cover 1 and a first flat key 5, and the single reducer 18 is separately positioned and connected with a cutting arm support 24 through the input end cover 1 and the first flat key 5, as shown in fig. 4.

In the embodiment of the utility model, the tolerance between the outer cylinder of the outer connecting cylinder 10 and the inner cylinder of the side roller 22 is clearance fit, the output structure is stable, the disassembly is very convenient, and the problem of difficult disassembly and assembly of the side roller is solved.

In the embodiment of the present invention, the single reducer case 8 is fixed with the bearing housing 15, the bearing housing 15 is mounted with the bearing 23, and the outer connecting cylinder 10 is supported on the bearing housing 15 through the bearing 23.

In the embodiment of the utility model, a sealing assembly is arranged between the outer connecting cylinder 10 and the bearing seat 15, and the sealing assembly comprises a dynamic sealing seat 11 installed on the outer connecting cylinder 10, a static sealing seat 14 installed on the bearing seat 15, a floating seal 12 and a combined seal formed by combining a labyrinth seal arranged on the outer side of the floating seal 12 and an outer seal 13, as shown in fig. 5; a dustproof combined seal is additionally arranged on the outer side of the floating seal 12, so that coal slime can be prevented from entering the area of the floating seal 12, and the service life of the floating seal 12 is effectively prolonged; the movable sealing seat 11 and the static sealing seat 14 are detachable, so that the replacement is convenient, and the maintenance cost is low.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A cutting reducer of a transverse shaft excavating and mining machine is characterized in that the cutting reducer is in a transverse shaft split type and is formed by connecting two symmetrically arranged single reducers (18) through a left connecting flange and a right connecting flange (20); the two single reducers (18) are respectively and symmetrically arranged at the left side and the right side of the cutting arm support (24), and the input shaft (2) is arranged on the side, located at the installation surface, of each single reducer (18) and is used for being connected with a cutting motor; the single speed reducer (18) comprises a single speed reducer shell (8), a three-level speed reducing structure and a spindle (17) are arranged inside the single speed reducer shell (8), and the single speed reducer (18) transmits the input torque of the cutting motor on the input shaft (2) to the spindle (17) through the internal three-level speed reducing structure; the middle connecting seats (16) of the two single speed reducers (18) are connected through left and right connecting flanges (20) and drive a middle roller (21) to rotate through a second flat key (19) to perform cutting operation; the outer side of the main shaft (17) stretches out of the single reducer shell (8), the outer side of the main shaft (17) is connected with an output connecting seat (9) through an inner spline and an outer spline in a matched mode, an outer connecting cylinder (10) is fixedly connected with the output connecting seat (9), the outer connecting cylinder (10) rotates under the transmission of the main shaft (17), a square block is arranged at the end of the output connecting seat (9), the square block of the output connecting seat (9) is matched with a square hole of a side roller (22) to transmit torque, and therefore the side roller (22) and the middle roller (21) are driven to rotate together to perform cutting operation.

2. The cutting reducer of a transverse-axis mining machine according to claim 1, wherein the three-stage reduction structure comprises primary parallel teeth (3), secondary parallel teeth (4), a small bevel gear (6) and a large bevel gear (7); the cutting motor inputs torque through an input shaft (2), and is meshed through a first-stage parallel tooth (3) and a second-stage parallel tooth (4) to form a first-stage speed reduction, an internal spline of the second-stage parallel tooth (4) drives a small bevel gear (6), the small bevel gear (6) is meshed with a large bevel gear (7) to form a second-stage speed reduction, and the large bevel gear (7) is transmitted to a main shaft (17) through a planetary speed reduction by the internal spline to form a third-stage speed reduction.

3. The cutting reducer of a transverse-axis mineral cutter according to claim 2, characterized in that the tooth profile of the small bevel gear (6) and the tooth profile of the large bevel gear (7) are both straight tooth profiles.

4. The cutting reducer of a transverse shaft excavating machine according to claim 1, characterized in that two rows of mounting holes are arranged on the mounting surface of the single reducer (18), and the two rows of mounting holes are arranged up and down symmetrically relative to the central line of the input shaft (2); the single reducer (18) is characterized in that an input end cover (1) and a first flat key (5) are further arranged on the mounting surface of the single reducer (18), and the single reducer (18) is matched with the first flat key (5) through the input end cover (1) and is independently positioned and connected with the cutting arm support (24).

5. The cutting reducer of a transverse-axis mining machine according to claim 1, wherein the outer cylinders of the outer connecting cylinders (10) and the inner cylinders of the edge cylinders (22) have a clearance fit.

6. The cutting reducer of a transverse-axis mineral cutter according to claim 1, characterized in that a bearing seat (15) is fixed on the single reducer housing (8), a bearing (23) is mounted on the bearing seat (15), and the outer connecting cylinder (10) is supported on the bearing seat (15) through the bearing (23).

7. Cutting reducer for transverse-axis mining machines according to claim 6, characterized in that between the outer connecting cylinder (10) and the bearing seat (15) there is provided a sealing assembly comprising a dynamic sealing seat (11) mounted on the outer connecting cylinder (10), a static sealing seat (14) mounted on the bearing seat (15), a floating seal (12) and a labyrinth seal arranged outside the floating seal (12) in combination with the outer seal (13).