CN112627816A - Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor - Google Patents
Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor Download PDFInfo
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- CN112627816A CN112627816A CN202110076477.8A CN202110076477A CN112627816A CN 112627816 A CN112627816 A CN 112627816A CN 202110076477 A CN202110076477 A CN 202110076477A CN 112627816 A CN112627816 A CN 112627816A
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- cutting
- permanent magnet
- motor
- cutting head
- water
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/187—Mining picks; Holders therefor with arrangement of fluid-spraying nozzles
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/22—Equipment for preventing the formation of, or for removal of, dust
- E21C35/223—Equipment associated with mining machines for sucking dust-laden air from the cutting area, with or without cleaning of the air
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
- H02P25/022—Synchronous motors
- H02P25/024—Synchronous motors controlled by supply frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Power Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
本发明公开了一种采用永磁同步电动机的悬臂式掘进机截割机构。本发明的方法包括：永磁变频电动机和伺服变频器置于电动机箱体内，两者通过电路连接；截割主轴与电动机的输出轴通过花键套连接，截割主轴和电动机输出轴为中空轴；截割头与截割主轴密封连接，截割头包括截割头体和内花键套，截割头体上设有喷嘴，内花键套和截割头体固定连接，内花键套和截割头体之间设有容水腔，容水腔与喷嘴相通，内花键套上设有小孔与容水腔相通；内喷雾系统安装在电动机输出轴和截割主轴的中空部位，水管一端与截割主轴密封连接，水管另一端密封安装在电动机上。本发明能够实现截割头的无极调速，工作效率更高，喷雾系统水路简单，压力大，除尘效果好。
The invention discloses a cantilever roadheader cutting mechanism using a permanent magnet synchronous motor. The method of the invention includes: the permanent magnet frequency conversion motor and the servo frequency converter are placed in the motor box, and the two are connected by a circuit; the cutting main shaft and the output shaft of the motor are connected by a spline sleeve, and the cutting main shaft and the motor output shaft are hollow shafts ;The cutting head is sealed with the cutting spindle, the cutting head includes a cutting head body and an inner spline sleeve, the cutting head body is provided with a nozzle, the inner spline sleeve and the cutting head body are fixedly connected, and the inner spline sleeve is There is a water-accommodating cavity between the cutting head body and the water-accommodating cavity, and the water-accommodating cavity is communicated with the nozzle, and the inner spline sleeve is provided with a small hole communicated with the water-accommodating cavity; the internal spray system is installed in the hollow part of the motor output shaft and the cutting main shaft , One end of the water pipe is sealed and connected with the cutting spindle, and the other end of the water pipe is sealed and installed on the motor. The invention can realize the stepless speed regulation of the cutting head, has higher working efficiency, simple water circuit of the spray system, high pressure and good dust removal effect.
Description
Technical Field
The invention belongs to the technical field of industrial and mining equipment, and particularly relates to a cantilever type heading machine cutting mechanism adopting a permanent magnet synchronous motor.
Background
With the high-speed growth of construction works such as urban road traffic, railways, highways, water conservancy, municipal engineering and the like in China, the development of the tunneling machinery in China is also rapid. The development machine has considerable market prospect in China and huge market demand, and is mainly divided into two development directions, namely a coal mine development machine and a tunnel development machine. In recent years, with the rapid development of the coal industry in China, the coal machine industry dependent on lip teeth is increasingly emphasized. The tunneling and the stoping are important production links in coal mine production, and the national guideline is that the tunneling is carried out in advance when the mining is repeated. The rapid excavation of the coal mine tunnel is a key technical measure for ensuring high and stable yield of a mine in a coal mine. The high-efficiency mechanized excavation and support technology is a necessary condition for ensuring high yield and high efficiency of mines and is a development direction of the roadway excavation technology. With the development of fully mechanized mining technology, millions of tons of super working faces and even tens of millions of tons of super working faces are produced annually in China, and the number of annual consumption stoping roadways is greatly increased, so that roadway excavation becomes a common and key technology of high-efficiency intensive production of coal mines.
The most main mode in the high-efficiency tunneling modes of the coal roadway in China is a matching operation line of a cantilever type tunneling machine and a single anchor rod drilling machine, which is also called as coal roadway comprehensive mechanical tunneling, and the cantilever type tunneling machine is widely applied to key coal mines in China. The boom-type roadheader integrates the functions of cutting, loading, transporting, walking, operating and the like, and is mainly used for cutting underground rock, coal or semi-coal roadway with sections of any shapes. It is mainly composed of a walking mechanism, a working mechanism, a loading and transporting mechanism, a transshipping mechanism and the like.
In the existing technical scheme, the cutting mechanism of the boom-type roadheader adopts a power transmission mode of a three-phase asynchronous motor, a two-stage planetary gear reducer, a cutting spindle and a cutting head. Since the three-phase asynchronous motor is mechanically characterized by high rotation speed and low torque, a speed reduction mechanism must be provided to increase the torque and reduce the rotation speed. At present, a two-stage planetary gear reducer is used as a main speed reducing mechanism. The secondary planetary gear reducer is complex in structure, a large amount of manpower and material resources are needed for maintenance in use, and the mechanical efficiency eta of the secondary planetary gear reducer is about 0.88 and is relatively low; secondly, the speed of the three-phase asynchronous motor is constant, and the speed cannot be regulated, so that the applicability is poor; and the water route of the spraying system of the boom-type roadheader cutting head is complex, the spraying pressure is small, the leakage is easy, and the dust-settling effect is not ideal.
Therefore, aiming at the problems in the prior stage, the invention provides a cantilever type heading machine cutting mechanism adopting a permanent magnet synchronous motor, which adopts a mode of the permanent magnet synchronous motor and an intelligent frequency converter to provide power with low speed and large torque, cancels a speed reduction structure, simultaneously realizes stepless speed regulation of a cutting head, is convenient for adjusting the rotating speed of the cutting head according to actual disclosure and simultaneously is convenient for adjusting the cutting speed in the processes of digging a pillar, repairing a roadway, collecting slag and cutting, and can realize higher working efficiency; meanwhile, the output shaft of the adopted permanent magnet synchronous motor and the cutting spindle are hollow shafts, an inner spraying system can be arranged, the water path is simple, the spraying pressure is high, the leakage is not easy, and the dust removal effect is good.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a cantilever type heading machine cutting mechanism adopting a permanent magnet synchronous motor, can realize stepless speed regulation of a cutting head, realizes higher working efficiency, can be internally provided with a spraying system, and has the advantages of simple water path, high spraying pressure, difficulty in leakage and good dust removal effect.
In order to achieve the above purpose, the invention provides the following technical scheme:
a cantilever type roadheader cutting mechanism adopting a permanent magnet synchronous motor comprises a motor box body, a permanent magnet variable frequency motor and a servo frequency converter, wherein the permanent magnet variable frequency motor and the servo frequency converter are arranged in the motor box body, and the servo frequency converter is connected with the permanent magnet variable frequency motor through a circuit; the cutting spindle is connected with an output shaft of the permanent magnet variable frequency motor through a spline sleeve, and the cutting spindle and the output shaft of the permanent magnet variable frequency motor are hollow shafts; the cutting head is hermetically connected with one end of the cutting spindle, the cutting head comprises a cutting head body and an inner spline sleeve, a nozzle is arranged on the cutting head body, the inner spline sleeve and the cutting head body are fixedly connected through welding, a water containing cavity is arranged between the inner spline sleeve and the cutting head body, the water containing cavity is communicated with the nozzle, and a small hole is formed in the inner spline sleeve and communicated with the water containing cavity; the cutting machine is characterized by further comprising an inner spraying system, wherein the inner spraying system is arranged at the hollow positions of the output shaft of the permanent magnet variable frequency motor and the cutting spindle and comprises a water pipe, a sealing joint is arranged at one end of the water pipe and is in sealing connection with the other end of the cutting spindle, and the other end of the water pipe is connected with a rotary water seal which is arranged on the permanent magnet variable frequency motor in a sealing way.
Preferably, a sealing structure is formed between one end of the cutting spindle and the cutting head through an O-shaped ring and a spline, so that the sealing performance of the inner spraying system is ensured.
Preferably, the front side of the motor box body is provided with a front flange, and the rear side of the motor box body is provided with a rear flange for positioning the permanent magnet variable frequency motor; and the rear flange is provided with a bolt mounting hole for mounting a motor mounting bolt, so that the permanent magnet variable frequency motor and the motor box body can be connected into a whole.
Preferably, the cutting device further comprises a cutting arm, the cutting arm is of a hollow structure, the cutting arm is sleeved on the cutting spindle and fixedly connected with the cutting spindle through a bearing, and the cutting arm is fixed on one side of the motor box body and used for protecting the cutting spindle and realizing continuous and stable operation of the cutting spindle.
Preferably, the water pipe is the stainless steel water pipe, prevents the corrosion, the water pipe other end is installed to permanent magnetism variable frequency motor afterbody, inside the water pipe runs through permanent magnetism variable frequency motor for interior water spraying system's water pipe provides sufficient water pressure, realizes the efficient dust removal effect.
The invention has the beneficial effects that:
the scheme adopts the combination of a permanent magnet variable frequency motor and a servo frequency converter, the permanent magnet variable frequency motor is a permanent magnet synchronous variable frequency motor, the servo frequency converter is an intelligent servo frequency converter, the servo frequency converter realizes the control of the output rotating speed and the torque of the permanent magnet variable frequency motor through controlling the parameters of the current, the voltage, the frequency and the like of the permanent magnet variable frequency motor, further realizes the low-speed and high-torque work of a cutting head and the stepless speed regulation of the cutting head, does not need to be provided with a speed reduction structure, can adjust the rotating speed of the cutting head according to the actual working condition, is convenient for the adjustment of the cutting speed in the processes of digging, repairing, collecting slag and cutting of the tunneling process, and has higher working efficiency compared with the cutting mechanism of the traditional cantilever; through adopting hollow permanent magnetism variable frequency motor output shaft and cutting spindle for spraying system in setting up, interior spraying system loops through the hollow part of cutting spindle, the aperture of internal spline cover, holds water cavity and nozzle, realizes the spraying process, makes the water under high pressure pass through the nozzle blowout and forms the water smoke, realizes efficient dust removal effect.
By adopting the scheme, the stepless speed regulation of the cutting head can be realized, the rotating speed of the cutting head can be regulated according to the actual working condition, the adjustment of the column digging, roadway repairing, slag collecting and cutting speed in the cutting process of the tunneling process is facilitated, the higher working efficiency is realized, a spraying system can be arranged in the device, the water path is simple, the spraying pressure is high, the leakage is not easy, and the dust removal effect is good.
Drawings
To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic view of the overall structure of the present apparatus.
Fig. 2 is a schematic structural diagram of a cutting mechanism in the device.
Fig. 3 is a schematic diagram of the water pipe assembly of the internal spraying system of the device.
Figure 4 is a schematic view of the structure of the cutting head in the device.
In the figure, 1-cutting head, 2-cutting arm, 3-cutting spindle, 4-spline housing, 5-motor box, 6-permanent magnet variable frequency motor, 7-internal spraying system, 8-servo frequency converter, 9-O-ring, 10-motor mounting bolt, 11-cutting head body, 12-internal spline housing, 13-water containing cavity, 14-small hole, 15-nozzle, 71-rotary water seal, 72-water pipe, 73-sealing joint, 51-front flange, 52-bolt mounting hole and 53-rear flange.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
As shown in the figure, the cantilever type roadheader cutting mechanism adopting the permanent magnet synchronous motor comprises a motor box body 5, a permanent magnet variable frequency motor 6 and a servo frequency converter 8, wherein the permanent magnet variable frequency motor 6 and the servo frequency converter 8 are installed in the motor box body 5, and the servo frequency converter 8 is connected with the permanent magnet variable frequency motor 6 through a circuit; the cutting machine also comprises a cutting spindle 3, wherein the cutting spindle 3 is connected with an output shaft of a permanent magnet variable frequency motor 6 through a spline sleeve 4, and the cutting spindle 3 and the output shaft of the permanent magnet variable frequency motor 6 are hollow shafts; the cutting head 1 is hermetically connected with one end of the cutting spindle 3, the cutting head 1 comprises a cutting head body 11 and an inner spline housing 12, a nozzle 15 is arranged on the cutting head body 11, the inner spline housing 12 is fixedly connected with the cutting head body 11 through welding, a water containing cavity 13 is arranged between the inner spline housing 12 and the cutting head body 11, the water containing cavity 13 is communicated with the nozzle 15, and a small hole 14 is arranged on the inner spline housing 12 and communicated with the water containing cavity 13; still include interior water-spraying system 7, interior water-spraying system 7 is installed at the cavity position of 6 output shafts of permanent magnet variable frequency motor and cutting spindle 3, interior water-spraying system 7 includes water pipe 72, sealing joint 73 is installed to water pipe 72 one end, with cutting spindle 3 other end sealing connection, the water pipe 72 other end even has rotatory water seal 71, and sealing installation is on permanent magnet variable frequency motor 6.
Preferably, a sealing structure is formed by one end of the cutting spindle 3 and the cutting head 1 through an O-shaped ring 9 and a spline, so that the sealing performance of the inner spraying system is ensured.
Preferably, a front flange 51 is arranged on the front side of the motor box body 5, and a rear flange 53 is arranged on the rear side of the motor box body for positioning the permanent magnet variable frequency motor; the rear flange 53 is provided with bolt mounting holes 52 for mounting motor mounting bolts, so that the permanent magnet variable frequency motor 6 and the motor box 5 can be connected into a whole.
Preferably, still include cutting arm 2, cutting arm 2 is hollow structure, cutting arm 2 overlaps on cutting spindle 3, through setting up bearing fixed connection between the two, cutting arm 2 is fixed in motor case 5 one side for protect cutting spindle 3, realize the continuous stable operation of cutting spindle 3.
Preferably, the water pipe 72 is a stainless steel water pipe to prevent corrosion; the other end of the water pipe 72 is installed at the tail of the permanent magnet variable frequency motor 6, and the water pipe 72 penetrates through the interior of the permanent magnet variable frequency motor 6, so that the inner spraying system 7 provides sufficient water pressure, and a high-efficiency dust removal effect is achieved.
The scheme adopts the combination of a permanent magnet variable frequency motor 6 and a servo frequency converter 7, the permanent magnet variable frequency motor 6 is a permanent magnet synchronous variable frequency motor, the servo frequency converter 7 is an intelligent servo frequency converter, the servo frequency converter 7 controls the output rotating speed and the torque of the permanent magnet variable frequency motor 6 through controlling the parameters such as the current, the voltage, the frequency and the like of the permanent magnet variable frequency motor 6, so that the low-speed large-torque work of the cutting head 1 and the stepless speed regulation of the cutting head 1 are realized, a speed reduction structure is not required to be arranged, the rotating speed of the cutting head 1 can be adjusted according to the actual working condition, and the adjustment of the cutting speed in the processes of digging a column, repairing a roadway, collecting slag and cutting is facilitated, so that the cutting mechanism has higher working efficiency compared with the traditional cantilever type; through adopting hollow permanent magnetism variable frequency motor 6 output shaft and cutting spindle 3 for spraying system 7 in setting up, spraying system 7 loops through cutting spindle 3's hollow portion, internal spline housing 12's aperture 14, holds water cavity 13 and nozzle 15 in proper order, realizes the spraying process, makes the water under high pressure pass through nozzle 15 blowout formation water smoke, realizes efficient dust removal effect.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110076477.8A CN112627816A (en) | 2021-01-20 | 2021-01-20 | Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110076477.8A CN112627816A (en) | 2021-01-20 | 2021-01-20 | Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor |
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| Publication Number | Publication Date |
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| CN112627816A true CN112627816A (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110076477.8A Pending CN112627816A (en) | 2021-01-20 | 2021-01-20 | Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320287A (en) * | 2021-12-22 | 2022-04-12 | 闫琳 | Permanent magnet motor arm-holding and cutting integrated drum |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555790A (en) * | 2009-05-23 | 2009-10-14 | 山东卡特重工有限公司 | Excavator which can reduce temperature with high efficiency and has internal spraying |
| CN102345459A (en) * | 2010-07-30 | 2012-02-08 | 三一重型装备有限公司 | Cutting mechanism for heading machine |
| CN210888936U (en) * | 2019-11-12 | 2020-06-30 | 吉林省机械装备制造有限责任公司 | Inner spraying structure of tunneling machine |
| US20200223098A1 (en) * | 2018-04-18 | 2020-07-16 | China University Of Mining And Technology | Vibrating type hard rock cutting mechanism with function of directional high-speed abrasive jet advanced slitting |
| CN212225206U (en) * | 2020-03-26 | 2020-12-25 | 三一重型装备有限公司 | Spraying structure in cutting part of heading machine |
| CN212296378U (en) * | 2020-04-30 | 2021-01-05 | 广州艾笛森信息技术有限公司 | Novel cutting part and heading machine |
| CN214330614U (en) * | 2021-01-20 | 2021-10-01 | 山西汾西华益实业有限公司 | Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor |
-
2021
- 2021-01-20 CN CN202110076477.8A patent/CN112627816A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101555790A (en) * | 2009-05-23 | 2009-10-14 | 山东卡特重工有限公司 | Excavator which can reduce temperature with high efficiency and has internal spraying |
| CN102345459A (en) * | 2010-07-30 | 2012-02-08 | 三一重型装备有限公司 | Cutting mechanism for heading machine |
| US20200223098A1 (en) * | 2018-04-18 | 2020-07-16 | China University Of Mining And Technology | Vibrating type hard rock cutting mechanism with function of directional high-speed abrasive jet advanced slitting |
| CN210888936U (en) * | 2019-11-12 | 2020-06-30 | 吉林省机械装备制造有限责任公司 | Inner spraying structure of tunneling machine |
| CN212225206U (en) * | 2020-03-26 | 2020-12-25 | 三一重型装备有限公司 | Spraying structure in cutting part of heading machine |
| CN212296378U (en) * | 2020-04-30 | 2021-01-05 | 广州艾笛森信息技术有限公司 | Novel cutting part and heading machine |
| CN214330614U (en) * | 2021-01-20 | 2021-10-01 | 山西汾西华益实业有限公司 | Cantilever type heading machine cutting mechanism adopting permanent magnet synchronous motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320287A (en) * | 2021-12-22 | 2022-04-12 | 闫琳 | Permanent magnet motor arm-holding and cutting integrated drum |
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Application publication date: 20210409 |