CN112576270A

CN112576270A - Multi-motor milling and excavating mechanism

Info

Publication number: CN112576270A
Application number: CN202011423230.0A
Authority: CN
Inventors: 李国平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-03-30

Abstract

The invention discloses a multi-motor milling and digging machine, which belongs to engineering mechanical equipment. The power is transmitted by the gearbox through a multistage parallel shaft and gears, the input end of the gearbox is connected with a hydraulic motor, the hydraulic motor drives the input shaft to rotate, the output end of the gearbox is in bidirectional output, the output end of the box body consists of a bearing seat bearing, the output shaft is connected with a milling and digging roller, a cutting tooth is arranged on the milling and digging roller, the milling and digging roller rotates to drive the cutting tooth to rotate to cut rocks, and the technical problem to be solved by the invention is that: the multi-motor milling and digging mechanism is driven by double motors or four motors, and when the number of the motors is two, the motors are distributed on two sides of a power shaft; when the number of the motors is four, correspondingly, the number of the power shafts is two, and the motors are uniformly distributed on two sides of the power shafts, so that the output torque is increased, and the space utilization rate is increased to the maximum extent. Meanwhile, the displacement of a single motor is reduced, and the performance requirement on the hydraulic motor is reduced.

Description

Multi-motor milling and excavating mechanism

Technical Field

The invention relates to the technical field of coal mine roadway tunneling, in particular to a multi-motor milling and excavating mechanism.

Background

The milling and excavating machine is also called a milling and excavating head, is an auxiliary tool for tunneling and finishing of mines, tunnels, diversion culverts, subways and the like, can be arranged on any power hydraulic machines such as excavators, slag raking machines and the like to realize tunneling and finishing operation, and is widely applied to various construction fields such as the steel industry, the forestry and the like. When the existing milling and excavating machine works, the power is small due to the driving of a single motor, the power can be increased only by increasing the displacement of the motor, and the motor with large displacement is large in size, so that the appearance size of the milling and excavating machine is large, the size of a milling and excavating roller is increased, the sizes of the milling and excavating machine and the milling and excavating roller are increased, and the cutting force is reduced.

Disclosure of Invention

The technical problem to be solved by the invention patent is as follows: the multi-motor milling and digging mechanism is driven by double motors or four motors, so that the output torque is increased, and the space utilization rate is increased to the maximum extent.

The technical scheme adopted by the invention is as follows: the milling and digging device comprises a box body and a milling and digging head, wherein a motor for driving is arranged in the box body, a power shaft is arranged on the motor, a power gear is sleeved on the power shaft, the milling and digging head comprises a roller base, milling and digging cutting teeth are arranged on the surface of the roller base, a working shaft is arranged in the roller base, the roller base is fixed with the working shaft, a working gear is further sleeved on the working shaft, the working gear is meshed with the power gear, the number of the motors is two or four, and when the number of the motors is two, the motors are distributed on two sides of the power shaft; when the number of the motors is four, correspondingly, the number of the power shafts is two, and the motors are uniformly distributed on two sides of the power shafts.

Preferably, a gap bridge shaft is arranged between the milling and digging head and the motor, a gap bridge gear is sleeved on the gap bridge shaft, and the gap bridge gear is respectively connected with the power gear and the working gear in a meshing manner.

Preferably, a sealing cover is arranged between the working shaft and the roller base, a bearing is arranged between the sealing cover and the working shaft, and a floating seal ring is arranged on the bearing.

Preferably, the bearing is a tapered roller bearing.

Preferably, the centers of the power gear, the working gear and the carrier gear are all located on the same axis.

Preferably, a tapered single-row roller bearing is arranged on the bridge shaft.

The motor for driving the milling and digging head in the patent of the invention adopts double motors or four motors, which is different from the single motor driving in the prior art, the output torque generated by the double motors or the four motors is larger than that generated by the single motor, and a plurality of motors are not only stacked in quantity, but also compared with the single motor, the single motor needs to increase the torque and can only be carried out by increasing the displacement of the motor, but the mode needs to correspondingly increase the space for accommodating the motor, thereby increasing the size of the whole milling and digging head, the invention adopts the mode that two ends of each power shaft are respectively provided with one motor to form double motor output, in addition, one power shaft is added to correspondingly form four motor output, thereby increasing the output torque and not occupying too much space, in addition, the multi-motor driving can achieve the same torque by increasing the number of the motors, the pressure of the motors can be reduced, and the hydraulic components of the whole machine can be reduced, the failure rate is reduced, and the cost of the whole machine is reduced.

Drawings

FIG. 1 is a cross-sectional view of the dual motor of the present invention.

FIG. 2 is a cross-sectional view of the four-motor of the present invention.

Fig. 3 is a structural view of the whole appearance of the present invention.

Wherein, 1, a box body; 2. milling and digging a head; 3. a motor; 4. a power shaft; 5. a power gear; 6. a roller base; 7. milling and digging cutting teeth; 8. a working shaft; 9. a working gear; 10. a bridge shaft; 11. a carrier gear; 12. a sealing cover; 13. a bearing; 14. a floating seal ring; 15. tapered single-row roller bearings.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

The invention provides a multi-motor 3 milling and digging mechanism, and in the first embodiment, as shown in figure 1, the multi-motor 3 milling and digging mechanism comprises a box body 1 and a milling and digging head 2, wherein the box body 1 is connected with the milling and digging head 2, a driving motor 3 is arranged in the box body 1, a power shaft 4 is arranged on the motor 3, the power shaft 4 is arranged in the horizontal direction, a power gear 5 is sleeved at the middle position of the power shaft 4, the power gear 5 rotates along with the power shaft 4, and as shown in figure 3, the part, close to the milling and digging head 2, of the box body 1 is arc-shaped, so that the aim of design is to prevent the milling and digging head 2 from being rubbed against the box body 1 due to deformation or bending in the rotating process to influence the normal work of the milling and digging.

Milling and digging head 2 includes a

roller base

6, 6 surfaces of roller base are equipped with and mills and dig pick 7, be equipped with working shaft 8 in the roller base 6, roller base 6 is fixed with working shaft 8, it is equipped with working gear 9 still to overlap on the working shaft 8, working gear 9 meshes with power gear 5 mutually, 3 quantity of motor is two or four, when 3 quantity of motor is two, distribute in 4 both sides of power shaft, 4 quantity of power shaft are one promptly, its both ends all are equipped with a motor 3, form the output of single-pass axle dual motor 3.

A gap bridge shaft 10 is arranged between the milling and digging head 2 and the motor 3, a gap bridge gear 11 is sleeved on the gap bridge shaft 10, and the gap bridge gear 11 is respectively meshed and connected with the power gear 5 and the working gear 9.

A sealing cover 12 is arranged between the working shaft 8 and the roller seat 6, a bearing 13 is arranged between the sealing cover 12 and the working shaft 8, a floating sealing ring 14 is arranged on the bearing 13, the sealing ring is simple in structure and only comprises a plurality of parts with simple shapes, such as rings, pins, springs and the like, the multilayer floating sealing ring 14 is only a combination of the simple parts, the number of the parts is less than that of mechanical sealing parts, a plurality of parts are used in parallel, abrasion is not generated between the parts, and the sealing is reliable, simple to maintain and convenient to overhaul.

The bearing 13 is a tapered roller bearing, which is mainly used for bearing combined radial and axial loads mainly including radial loads. Compared with an angular contact ball bearing, the bearing capacity is high, and the limit rotating speed is low.

The centers of the power gear 5, the working gear 9 and the carrier gear 11 are all positioned on the same axis, so that large torque is formed, the size of a transverse space is reduced, and the power gear is particularly suitable for a roadway with narrow width.

The gap bridge shaft 10 is provided with a tapered single-row roller bearing 15, the single-row tapered roller bearing is usually only subjected to radial force, compared with a ball bearing with the same size, the radial bearing capacity is improved by 1.5-3 times, the rigidity is good, the impact resistance is realized, and the radial load and the axial load in a single direction can be borne. When the bearing is subjected to a radial load, an axial component will be generated, so that another bearing capable of bearing an opposite axial force is required for balancing. It is especially suitable for the rigid supporting of short shaft, the shaft caused by thermal elongation and the machine accessories needing the separation type bearing.

In the second embodiment, as shown in fig. 2, the number of the power shafts 4 is two, two ends of each power shaft 4 are respectively provided with a motor 3 to form a four-motor output of a two-way shaft, two power shafts 4 and four motors 3 are both located in the box body 1, the two power shafts 4 are also horizontally arranged and are parallel to each other, the motors 3 are located at two ends of the power shafts 4, and the two power shafts 4 are engaged with each other through respective power gears 5 to form transmission. The rest of the contents are the same as those of the first embodiment.

The foregoing has described preferred embodiments of the present invention, but it should not be construed as limiting the claims. The invention is not limited to the above embodiments, and the specific structure thereof is allowed to vary, and all variations within the scope of the independent claims of the invention are within the scope of the invention.

Claims

1. A multi-motor milling and digging mechanism comprises a box body and a milling and digging head, wherein a motor for driving is arranged in the box body, a power shaft is arranged on the motor, a power gear is sleeved on the power shaft, the milling and digging head comprises a roller base, milling and digging picks are arranged on the surface of the roller base, a working shaft is arranged in the roller base, the roller base is fixed with the working shaft, a working gear is further sleeved on the working shaft, and the working gear is meshed with the power gear, and the multi-motor milling and digging mechanism is characterized in that the number of the motors is two or four, and when the number of the motors is two, the motors are distributed on two sides of the power shaft; when the number of the motors is four, correspondingly, the number of the power shafts is two, and the motors are uniformly distributed on two sides of the power shafts.

2. The multi-motor milling and excavating mechanism of claim 1 further comprising: and a gap bridge shaft is arranged between the milling and digging head and the motor, a gap bridge gear is sleeved on the gap bridge shaft, and the gap bridge gear is respectively connected with the power gear and the working gear in a meshing manner.

3. The multi-motor milling and excavating mechanism of claim 1 further comprising: a sealing cover is arranged between the working shaft and the roller base, a bearing is arranged between the sealing cover and the working shaft, and a floating seal ring is arranged on the bearing.

4. The multi-motor milling and excavating mechanism of claim 3, wherein: the bearing is a tapered roller bearing.

5. The multi-motor milling and excavating mechanism of claim 1 further comprising: the centers of the power gear, the working gear and the carrier gear are all positioned on the same axis.

6. The multi-motor milling and excavating mechanism of claim 2 further comprising: and a tapered single-row roller bearing is arranged on the bridge shaft.