CN218439349U - Coal seam is from walking integration cutting equipment - Google Patents

Abstract

The utility model discloses a self-walking integrated cutting device for coal seams, which comprises a walking driving mechanism and a spiral cutting knife; the walking driving mechanism comprises a walking platform and a driving motor or a hydraulic motor, and a supporting sleeve corresponding to an output rotating shaft of the driving motor or the hydraulic motor is arranged on the walking platform; the spiral cutting knife comprises a central shaft and a spiral cutter body, the cutter body is arranged on the outer side of the central shaft, a spiral discharge channel is formed on the outer side of the central shaft, and convex cutter heads are arranged on the outer side of the cutter body at intervals; one end of the central shaft is sleeved in the support sleeve and is in transmission connection with an output rotating shaft of the driving motor or the hydraulic motor; the utility model discloses lie in full coal seam slotting process and equipment embodiment, adopt helical blade to inlay the mode of cutting knife, mechanized continuous cutting coal seam is compared the increase of drilling effective area, makes the coal seam release change, is favorable to gas quick release, provides equipment support for implementing new coal seam construction mode, reduces the gas improvement cost.

Description

Coal seam is from walking integration cutting equipment

Technical Field

The utility model belongs to the technical field of colliery gas is administered, concretely relates to coal seam is from walking integration cutting equipment.

Background

The most common means for treating the gas in the coal mine underground coal seam in China is to arrange dense drill holes, guide a negative pressure pipeline into the drill holes after plugging, and extract the gas existing in the coal seam by using the negative pressure pipeline, so that the gas concentration in the coal seam is reduced, and the production safety in the later coal seam mining process is ensured.

The existing drilling mode mostly adopts the arrangement of dense drilling, a plurality of holes communicated with a roadway are formed in a coal seam, hole sealers are arranged in each hole, and each hole sealer pumping hole and a negative pressure pipeline form a negative pressure pipeline network for gas extraction, and the mode has the following problems:

1. intensive drilling, unit area, large number of drilled holes, large consumption of manpower and material resources for each drilled hole and low additional value;

2. the hole diameter of the drill hole is limited, the effective area of the coal bed for releasing gas is small, the gas is slowly desorbed in the coal bed, and the extraction period is long;

3. accidents such as gas outburst and orifice spraying and the like easily occur in the drilling, the safety coefficient is low, and the accidents are easily caused;

4. the hole collapse phenomenon is easy to occur in the drilled hole, and the gas is not easy to release and extract;

5. the drilling is accompanied with the processes of hydraulic flushing, high-pressure water fracturing, hole making and the like, the labor and the financial resources are consumed, and the manual workload is large;

the existing process also has the problem that the hydraulic punching gas extraction technology is adopted to improve the air permeability of the coal body, and the problems of frequent gas overrun, easy artificial induction outburst and the like exist in the execution process.

Therefore, the existing drilling mode for treating the gas has the problems of a large number of drilled holes, complex construction process, high labor intensity, high investment of manpower, material resources and financial resources and high maintenance cost, so that a new process and a new technology which can replace low coal mine gas treatment cost and matched high-performance mining mechanical equipment need to be searched urgently, and based on the fact, the research of the self-walking integrated cutting equipment for the coal seam is necessary.

Disclosure of Invention

To the defect and the problem that existing equipment exists, the utility model provides a coal seam is from walking integration cutting equipment, the effectual coal seam exploitation degree of difficulty that exists of having solved among the existing equipment is big, the problem that the input cost is high.

The utility model provides a scheme that its technical problem adopted is: a self-walking integrated cutting device for a coal seam comprises a walking driving mechanism and a spiral cutting knife; the walking driving mechanism comprises a walking platform and a driving motor or a hydraulic motor, the driving motor or the hydraulic motor is arranged on the walking platform, and a supporting sleeve corresponding to an output rotating shaft of the driving motor or the hydraulic motor is arranged on the walking platform; the spiral cutting knife comprises a cylindrical central shaft and a spiral cutter body, the cutter body is arranged on the outer side of the central shaft, a spiral discharge channel is formed on the outer side of the central shaft, and convex cutter bits are arranged on the outer side of the cutter body at intervals; one end of the central shaft is sleeved in the supporting sleeve and is in transmission connection with an output rotating shaft of the driving motor or the hydraulic motor.

Furthermore, the bottom of walking platform is provided with the walking track, installs the support cylinder along vertical setting on the walking platform, is provided with the supporting seat on the upper portion of support cylinder, driving motor or hydraulic motor install on the supporting seat.

Furthermore, a reinforced support frame is fixed on one side of the walking platform, and the support sleeve is fixed on the end part of the reinforced support frame and corresponds to an output rotating shaft of the driving motor or the hydraulic motor.

Furthermore, the other end of the spiral cutting knife goes deep into the coal bed and is rotatably provided with a jacking sleeve, the jacking rod is positioned at the rear side of the spiral cutting knife, the rod body of the jacking rod is fixed at the outer side of the jacking sleeve, and the cylinder body of the jacking rod is fixed on the coal bed.

Furthermore, the center shaft comprises a plurality of shaft units, each shaft unit is provided with an independent cutter body, the shaft units are connected in a butt joint mode, and the adjacent cutter bodies are correspondingly connected together to form a spiral discharging channel.

Furthermore, both ends of the central shaft are provided with driving motors or hydraulic motors, and the driving motors or the hydraulic motors on both sides are respectively fixed on the corresponding walking platforms and walk in the roadway on the corresponding side.

Furthermore, the center pin includes a plurality of flexible axle units, the flexible axle unit passes through the universal joint and connects the central flexible axle that forms an organic whole, and the both ends suit of central flexible axle is in the supporting sleeve and with output pivot transmission connection, and the cutter body spiral sets up on central flexible axle, and the lateral surface interval of cutter body is provided with the tool bit.

Furthermore, the central flexible shaft is spirally provided with a continuous spiral conveying body and interrupted cutter bodies, each flexible shaft unit is provided with an independent cutter body, a cutter head on each cutter body protrudes out of the spiral conveying body, a gap exists between every two adjacent cutter bodies, and the spiral conveying body is sequentially and spirally connected with the flexible shaft units to form a continuous discharging channel.

Furthermore, the cutter body includes two opposite spiral direction's levogyration sections and dextrorotation section, levogyration section and dextrorotation section middle part butt joint are in the same place, and both outer ends suit respectively in the support sleeve of corresponding side to be connected with the transmission of output shaft.

The utility model has the advantages that: the utility model aims at the defects existing in the prior structure, a walking platform is arranged, which is used for walking in the pre-excavated roadway and is used as an installation platform of the equipment, wherein, a driving motor or a hydraulic motor is used for being connected with an output rotating shaft through rotating power and a speed reducer in a transmission way; strengthen the support frame and support the cover and be used for stabilizing the support to spiral cutting knife, its tip that is used for spiral cutting knife is connected through the output pivot transmission that supports cover and speed reducer, realize the transmission of power, realize power transmission's stability simultaneously, support the cover and correspond the setting with the output pivot, make spiral cutting knife can last stable rotation, spiral cutting knife is used for going deep into in the coal seam, and along with walking of walking platform, the blade that utilizes spiral cutting knife side is when rotating, carry out rotary cutting to the coal seam, and pass through spiral helicine row's of discharge passageway output outside the cutting gap with the cinder that produces, thereby at the inside crosscut in coal seam, the production has certain thickness's cutting gap.

In the process of cutting seams, the utility model provides a spiral cutting knife of a hard shaft, a combined hard shaft and a combined flexible shaft, in the mode of the hard shaft and the combined hard shaft, a walking platform can be arranged on one side or two sides of the spiral cutting knife, so that the spiral cutting knife can be suitable for single-side roadways or double-side roadways to cut coal seams, and the combined flexible shaft is suitable for double-side roadways; wherein in combination hard axle and combination flexible axle structure, both can all make up through less axle unit, can install the mode of making up one by one in less space, be convenient for transport with transfer to the tunnel in, be applicable to the great situation of helical cutting knife span scope, in the implementation mode of combination flexible axle, can have certain deformability, allow it crooked in the course of the work, if when meeting the situations such as hard thing, can follow the crooked of hard thing department.

And simultaneously, the utility model discloses in the cutter body that is used for cutting the coal seam be continuous or intermittent structure, and to intermittent structure, the cutter body independently sets up on the flexible axle unit, and in order to make the coal seam of cutting can be smooth carry to the outside, still set up continuous auger delivery body on central flexible axle, form continuous row's material passageway, the cutter body is used for cutting, and the auger delivery body is used for discharging the cutting cinder, avoids the cinder to be detained in the cutting joint.

The utility model lies in full coal seam slot technology method and equipment embodiment, the coal seam gas permeability has greatly been improved, reduce the intensity of labour and the gas drainage cycle of drilling construction, adopt helical blade to inlay the mode of cutting knife, mechanized continuous cutting coal seam, compare the increase of drilling effective area, it changes to make the coal seam release pressure release, the coal seam gas permeability is better, be favorable to the quick release of gas, improve construction safety in the pit, for implementing new coal seam construction mode provides equipment support, greatly reduced gas administers the cost, reduce the human input.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the reinforcing support frame.

Fig. 3 is a schematic structural view of the travel driving mechanism.

Fig. 4 is a schematic structural view of the propping sleeve and the propping rod.

Fig. 5 is a schematic structural view of the double-sided travel driving mechanism.

FIG. 6 is a schematic structural view of another embodiment of a central shaft.

Fig. 7 is a structural schematic diagram of an embodiment of the double discharging flexible shaft.

Fig. 8 is a schematic structural diagram of a double discharging flexible shaft.

Fig. 9 is a schematic view of the structure of the utility model in the using process.

The reference numbers in the figures are: the device comprises a walking platform 1, a driving motor or a hydraulic motor 2, an output rotating shaft 3, a supporting sleeve 4, a reinforcing supporting frame 5, a helical cutting knife 6, a central shaft 61, a knife body 62, a knife head 63, a flexible shaft unit 64, a universal joint 65, a driving shaft 66, a jacking sleeve 7 and a hydraulic ejector rod 8.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example 1: this embodiment aims at providing a coal seam is from integration cutting equipment of walking, the intraformational gas of mainly used coal is administered, change traditional handicraft, carry out transverse cutting to the coal seam, produce the cutting cut in the coal seam is inside, make the coal seam layering, make the gas in cutting cut upper portion and the lower part coal seam can get into in this cutting cut, and discharge gas from this cutting cut, to current coal seam construction methods, it is big to have the coal seam exploitation degree of difficulty, the high problem of input cost, based on this, this embodiment provides a coal seam is from integration cutting equipment of walking.

As shown in fig. 1, a self-walking integrated cutting device for a coal seam comprises a walking driving mechanism and a spiral cutting knife; wherein walking platform 1 is used for walking in the tunnel to as the mounting platform of equipment, install driving motor or hydraulic motor 2 on walking platform 1, driving motor or hydraulic motor 2 are used for through rotating power, and are connected with output shaft 3 transmission through the speed reducer.

The spiral cutting knife 6 comprises a cylindrical central shaft 61 and a spiral cutter body 62, the cutter body 62 is arranged on the outer side of the central shaft 61, a spiral discharge channel is formed on the outer side of the central shaft 61, and convex cutter heads 63 are arranged on the outer side of the cutter body 62 at intervals; one end of the central shaft 61 is sleeved in the support sleeve 4 and is in transmission connection with the output rotating shaft 3 of the driving motor or the hydraulic motor 2.

In this embodiment, as shown in fig. 1, the spiral cutting device is suitable for a single roadway, the walking platform walks in a single-side roadway through a walking crawler, and drives the spiral cutting knife to rotate and transversely translate, and as shown in fig. 2-3, a reinforcing support frame 5 is fixed on one side of the walking platform 1, the end of the reinforcing support frame 5 is provided with a support sleeve 4 corresponding to an output rotating shaft 3, the inner end of the spiral cutting knife 6 is sleeved in the support sleeve 4 and is in transmission connection with the output rotating shaft 3, and the outer end of the spiral cutting knife extends into the coal seam.

During the concrete implementation, this embodiment is for realizing the walking function, be provided with the walking track on walking platform 1, install on the walking platform along vertical support cylinder that is provided with, upper portion at support cylinder is provided with the supporting seat, support cylinder is used for adjusting the height of supporting seat, make spiral cutting knife 6 and cutting seam's high matching, driving motor or hydraulic motor 2 and speed reducer are installed on the supporting seat, strengthen one side of support frame 5 fixed at the supporting seat, it is provided with the support cover 4 that corresponds with driving motor or hydraulic motor's output pivot to strengthen 5 tip of support frame, the tip of backup pad still is provided with the operation workstation, be provided with intelligent display screen and display instrument on the operation workstation.

This embodiment is used for laying driving motor or hydraulic motor's supporting seat is liftable, and its effect can the adaptability adjust helical cutting knife's mounting height, makes helical cutting knife and the high adaptation of just cutting the eye, convenient to use, and the function is various.

As shown in fig. 3, the supporting sleeve 4 is a bearing or a shaft sleeve, the reinforcing supporting frame 5 includes a horizontal fixing support and an inclined support which are integrally arranged, the horizontal fixing support is fixed on the supporting base, an outer sleeve is arranged at the end of the inclined support, and the bearing or the shaft sleeve is sleeved on the outer sleeve and is provided with one or more groups.

When the coal seam cutting device is used, a through primary cutting hole is dug in a coal seam to be cut, the spiral flexible shaft cutting knife 6 is placed into the primary cutting hole, the walking driving mechanism is arranged in a roadway, two ends of the spiral flexible shaft cutting knife 6 are respectively connected to the output end of the walking driving mechanism, the walking platform is started to drive the spiral cutting knife to slowly walk forwards, the spiral cutting knife is driven by a driving motor or a hydraulic motor to rotate in the walking process, the spiral cutting knife cuts the inner area of the coal seam in the coal seam, the sawing thickness can be controlled to be about 200mm, the cutting seam thickness is not too large in implementation, coal and gas outburst accidents are prevented during the cutting seam period, the generated coal seam is output into the roadway, the coal seam generates cutting seams with certain thickness, gas in the coal seam is output and discharged by using the cutting seams, compared with the traditional permeability increasing method, the labor intensity and the gas extraction period of drilling construction are reduced, meanwhile, gas extraction 'blank zones' caused by drilling deviation are eliminated, and the method is innovative in outburst prevention effect, the effectiveness of roadway is reduced, the underground roadway excavation is convenient, the working amount of the coal seam is compact, the gas extraction track is convenient to dig, and the gas extraction track extraction is safely extracted.

Example 2: this example is substantially the same as example 1, except that: in the embodiment, a top support structure is arranged at the inner end of the spiral cutting knife in the mode of the unilateral roadway.

As shown in fig. 4, this embodiment is applicable to unilateral tunnel, and the other end of helical cutting knife 6 is deepened inside the coal seam to the rotation is provided with the propping cover 7, and ejector pin 8 is located the rear side of helical cutting knife, and its body of rod is fixed in the outside of propping cover, and its cylinder body is fixed on the coal seam.

In the embodiment, the ejector rod is a hydraulic ejector rod 8; the utility model discloses a be applicable to the helical cutting knife that length is longer, rotate the cover at the inner of helical cutting knife and be equipped with the propping cover in the inboard of helical cutting knife, the rotation setting of propping cover can not influence the rotation of helical cutting knife, the rear side of propping cover is fixed with hydraulic ram, hydraulic ram has two effects, one of them is fixed propping cover, make the propping cover can rotate with the helical cutting knife relatively; and secondly, the hydraulic ejector rod provides forward thrust at the inner end of the helical cutting knife, and the inner side and the outer side of the helical cutting knife apply force synchronously, so that the stability of the helical cutting knife in the coal bed cutting process is improved.

Example 3: this example is substantially the same as example 1, except that: the present embodiment further illustrates the structure of the central shaft.

This embodiment center pin is the combined shaft, and center pin 61 includes a plurality of axle units, all is provided with independent cutter body on every axle unit, and butt joint is in the same place between the axle unit, and each adjacent cutter body corresponds to link together and form spiral helicine discharge passageway.

When the spiral cutter is specifically implemented, the central shaft 61 is formed by assembling a plurality of independent shaft units, after the primary cutting hole is formed, the spiral cutter can be combined and connected in a roadway section by section, the problem that space is needed to be large when the spiral cutter is placed is avoided, when the shaft units are combined, each section of shaft unit is of a circular shaft structure, one side end part is provided with a connector, the other side end part is provided with a connecting hole, one shaft unit is provided with one period of spiral cutter bodies, therefore, after the combination is finished, the outer side of the central shaft forms one spiral cutter body of a closed structure, the outer side of the central shaft is provided with the cutter head, the coal bed is cut by utilizing the cutter head, and the closed spiral channel discharges materials.

When the spiral cutting knife is operated, the connector and the connecting hole can be in threaded connection, and the threaded connection direction is opposite to the rotation direction of the spiral cutting knife, so that when the spiral cutting knife rotates, the cutter head collides with a coal bed, and the connection strength of the connector and the connecting hole can be further increased; the pin hole and the pin shaft can be used as required, and the pin can be fixed after the thread assembly is finished; and a splicing mode of a square shaft and a square hole can be adopted, and then the direct pinning is carried out.

Example 4: this example is substantially the same as example 1, except that: the present embodiment is an embodiment applicable to a bilateral roadway.

As shown in fig. 5, both ends of the central shaft 61 in this embodiment are provided with a driving motor or a hydraulic motor for driving the central shaft to rotate, the driving motors or the hydraulic motors 2 on both sides are respectively fixed on the corresponding traveling platforms 1, and rotate synchronously, and travel in the tunnels on the corresponding sides, that is, a left driving traveling mechanism and a right driving traveling mechanism are respectively and correspondingly arranged on the left and right sides of the helical cutting knife, the left driving traveling mechanism and the right driving traveling mechanism are respectively located in the tunnels on both sides, the double-row material helical cutting knife 6 is located in the coal seam, and both ends thereof penetrate through the coal seam and are in transmission connection with the left driving traveling mechanism and the right driving traveling mechanism located on both sides.

At first form the initial cutting hole that link up in the coal seam, the helical cutting sword crosses the coal seam through initial cutting hole, then is being connected with the driving motor or the hydraulic motor who corresponds the side respectively, and the drive of this structure two sides, synchronous walking makes the helical cutting sword cut the coal seam, and two sides provide synchronous power, cuts the coal seam.

Example 5: this example is substantially the same as example 1, except that: the central shaft of the present embodiment is a flexible shaft.

As shown in fig. 6, the center pin includes a plurality of flexible axle units 64, flexible axle unit 64 passes through universal joint 65 and connects and form integrative center flexible axle, center flexible axle's both ends suit in supporting cover 4 and be connected with the transmission of output pivot, cutter body 62 spiral sets up on center flexible axle, cutter body 62's lateral surface interval is provided with tool bit 63, center flexible axle has certain bending capacity, be convenient for transport and get into the department in the tunnel and cut the eye, simultaneously the utility model discloses well spiral flexible axle cutting knife can have certain deformability, allows it crooked in the course of the work, if when meeting situations such as hard thing, can follow hard thing department and crooked.

When the coal slag discharging device is implemented specifically, the central flexible shaft is spirally provided with the continuous spiral conveying body and the intermittent cutter bodies, each flexible shaft unit is provided with the independent cutter body, the cutter head on each cutter body protrudes out of the spiral conveying body, a gap exists between every two adjacent cutter bodies, the spiral conveying bodies are sequentially and spirally connected with the flexible shaft units to form a continuous discharging channel, the intermittent cutter bodies and the cutter heads on the outer sides of the cutter bodies cut a coal bed, and the spiral conveying bodies continuously convey generated coal slag to ensure that the coal slag can be smoothly discharged out of a cutting seam.

In the embodiment, the cutter body is a hard cutter body, the spiral conveying body is made of spiral and continuous deformable materials, at least the cutter head of the cutter body protrudes out of the spiral conveying body to cut a coal bed, in addition, when the cutter body is implemented, two ends of the central flexible shaft are connected with the driving shaft 66 through the universal joint 65, the driving shaft 66 is sleeved in the support sleeve 4 and is in transmission connection with the output rotating shaft 3, the cutter body 62 is spirally arranged on the central flexible shaft, and the cutter head 63 is arranged on the outer side surface of the cutter body 62 at intervals.

The central flexible shaft of the embodiment is in transmission connection with the output rotating shaft 3 through the driving shaft 66, the driving shaft 66 receives power provided by the speed reducer, and the driving shaft can be in a horizontal state under the action of the supporting sleeve 4, so that torque on the output rotating shaft is avoided, and the safety of driving equipment is improved.

This embodiment provides a spiral flexible axle cutting knife 6 with crooked deformability, provides the rotatory and power that advances forward of spiral flexible axle cutting knife by the running drive mechanism, and the deformability of spiral flexible axle cutting knife 6 can have the deformability of adaptation after the hard thing of cutting in-process contact, avoids producing rigidity stress, makes the damage of spiral flexible axle cutting knife.

Implementation 6: this example is substantially the same as example 1, except that: this embodiment further illustrates the structure of the cutter body.

In the mode that all is provided with the walking drive structure to 6 both sides of helical cutting knife, the walking platform walks in the tunnel of both sides, for the convenience of arranging the material, this embodiment has set up the cutter body that can arrange the material in step from both sides, and the cutter body includes two opposite levogyration sections of spiral direction and dextrorotation section in the concrete structure, and levogyration section and dextrorotation section middle part butt joint are in the same place, and both outer ends suit respectively in the support sleeve that corresponds the side to be connected with the transmission of output shaft, the length of levogyration section and dextrorotation section is the same.

In the embodiment, slotted coal is discharged to two sides through the helical blades, and after the coal seam is slotted, a cutting seam is formed in the coal seam, so that a space for displacement and expansion deformation is created for a coal body outside the seam of the coal seam, the fracture of the coal body is increased, and the desorption and emission of gas are accelerated, so that the pressure relief extraction of gas in the coal body in a mining section is realized, the gas outburst elimination is controlled, and the purpose that the gas content of the coal seam is lower than a production standard value is achieved.

Claims (10)

1. The utility model provides a coal seam is from walking integration cutting equipment which characterized in that: comprises a walking driving mechanism and a spiral cutting knife; the walking driving mechanism comprises a walking platform and a driving motor or a hydraulic motor, the driving motor or the hydraulic motor is arranged on the walking platform, and a supporting sleeve corresponding to an output rotating shaft of the driving motor or the hydraulic motor is arranged on the walking platform; the spiral cutting knife comprises a cylindrical central shaft and a spiral cutter body, the cutter body is arranged on the outer side of the central shaft, a spiral discharge channel is formed on the outer side of the central shaft, and convex cutter bits are arranged on the outer side of the cutter body at intervals; one end of the central shaft is sleeved in the supporting sleeve and is in transmission connection with an output rotating shaft of the driving motor or the hydraulic motor.

2. The coal seam self-walking integrated cutting equipment of claim 1, characterized in that: the bottom of walking platform is provided with the walking track, installs the support cylinder along vertical setting on the walking platform, is provided with the supporting seat on the upper portion of support cylinder, driving motor or hydraulic motor install on the supporting seat.

3. The coal seam self-walking integrated cutting equipment of claim 1, characterized in that: and a reinforced support frame is fixed on one side of the walking platform, and the support sleeve is fixed on the end part of the reinforced support frame and corresponds to an output rotating shaft of a driving motor or a hydraulic motor.

4. The coal seam self-walking integrated cutting equipment of claim 1, characterized in that: the other end of the spiral cutting knife goes deep into the coal seam and is provided with a jacking sleeve in a rotating mode, a push rod is connected onto the jacking sleeve and is located at the rear side of the spiral cutting knife, a rod body of the push rod is fixed to the outer side of the jacking sleeve, and a cylinder body of the push rod is fixed to the coal seam.

5. The coal seam self-walking integrated cutting equipment as claimed in claim 1, wherein: the central shaft comprises a plurality of shaft units, each shaft unit is provided with an independent cutter body, the shaft units are connected together in a butt joint mode, and the adjacent cutter bodies are correspondingly connected together to form a spiral discharging channel.

6. The coal seam self-walking integrated cutting equipment of claim 1, characterized in that: and driving motors or hydraulic motors are arranged at two ends of the central shaft, and the driving motors or the hydraulic motors at two sides are respectively fixed on the corresponding walking platforms and walk in the roadway at the corresponding side.

7. The coal seam self-walking integrated cutting equipment of claim 6, characterized in that: the center pin includes a plurality of flexible axle units, the flexible axle unit forms integrative center flexible axle through the universal joint connection, and the both ends suit of center flexible axle is in the supporting sleeve and with output shaft transmission connection, and the cutter body spiral sets up on center flexible axle, and the lateral surface interval of cutter body is provided with the tool bit.

8. The coal seam self-walking integrated cutting equipment of claim 7, characterized in that: the central flexible shaft is spirally provided with continuous spiral conveying bodies and interrupted cutter bodies, each flexible shaft unit is provided with an independent cutter body, a cutter head on each cutter body protrudes out of each spiral conveying body, a gap exists between every two adjacent cutter bodies, and the spiral conveying bodies are sequentially and spirally connected with the flexible shaft units to form a continuous discharging channel.

9. Self-propelled integrated cutting apparatus for coal seams according to any of claims 6 to 8, characterized in that: the cutter body includes two opposite levogyration sections of spiral direction and dextrorotation section, levogyration section and dextrorotation section middle part butt joint are in the same place, and both outer ends are the suit respectively in the support sleeve of corresponding side to be connected with output shaft transmission.

10. The coal seam self-walking integrated cutting equipment of claim 9, characterized in that: the left-handed section and the right-handed section are the same in length.

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