CN110374587B - Telescopic cutting mechanism of heading machine - Google Patents
Telescopic cutting mechanism of heading machine Download PDFInfo
- Publication number
- CN110374587B CN110374587B CN201910765631.5A CN201910765631A CN110374587B CN 110374587 B CN110374587 B CN 110374587B CN 201910765631 A CN201910765631 A CN 201910765631A CN 110374587 B CN110374587 B CN 110374587B
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- arm
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- brake pad
- fixed arm
- telescopic
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- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
- E21C25/08—Mountings for the rods or drums
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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
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/08—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for adjusting parts of the machines
-
- 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
-
- 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
- E21C35/08—Guiding the machine
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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
Landscapes
- 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)
- Braking Arrangements (AREA)
Abstract
The invention relates to a telescopic cutting mechanism of a heading machine, which comprises a cutting head, a working arm, a speed reducer, a cutting motor and a holding device which are sequentially and coaxially connected from front to back, wherein the speed reducer and the cutting motor are fixedly arranged in the telescopic arm, the telescopic arm is inserted in the front part of a fixed arm and is in front-back sliding fit with the fixed arm, a propulsion oil cylinder is arranged in the rear part of the fixed arm, one cylinder barrel and one cylinder rod of the propulsion oil cylinder are connected with the fixed arm, the other cylinder barrel and the cylinder rod of the propulsion oil cylinder are connected with the telescopic arm, the telescopic direction of the propulsion oil cylinder is the front-back direction, the rear end of the telescopic arm is fixedly provided with a guide flat key, the rear section hole wall of an inner hole at the front part of the fixed arm is provided with a corresponding guide key groove which can be in front-back sliding fit with the guide flat key, and the holding device can be in insertion fit with the fixed arm with a conical surface. The invention has simple structure, easy processing and manufacturing and high reliability and maintainability.
Description
Technical Field
The invention relates to a telescopic cutting mechanism of a coal mine tunneling machine, which can be arranged on a coal mine cantilever type tunnel tunneling machine and is mainly used for executing cutting and blanking operations during coal mine tunnel tunneling.
Background
The telescopic structure of the traditional tunneling machine telescopic cutting mechanism for the coal mine mainly comprises two types, namely a rectangular frame type and a cylindrical power part telescopic in vivo. The former has disadvantages of difficult processing, difficult assurance of sliding pair clearance, easy wear and difficult maintenance, and the latter has disadvantages of complex structure, poor reliability and maintainability.
Disclosure of Invention
The invention aims to provide a telescopic cutting mechanism of a heading machine, which has the advantages of simple structure, easiness in processing and manufacturing, high reliability and good maintainability.
The main technical scheme of the invention is as follows:
The utility model provides a telescopic cutting mechanism of entry driving machine, includes by preceding back coaxial coupling's cutting head, work arm, reduction gear and cutting motor in proper order, reduction gear and cutting motor are all fixed mounting in flexible arm, flexible arm peg graft in the anterior hole of fixed arm and with sliding fit around the fixed arm, the internally mounted at the rear portion of fixed arm has a propulsion hydro-cylinder, propulsion hydro-cylinder's cylinder with the cylinder pole one with the fixed arm is connected, one with flexible arm is connected, propulsion hydro-cylinder's flexible direction is fore-and-aft direction.
The cross section shape of the sliding fit part of the telescopic arm and the fixed arm is circular.
The cutting motor adopts a hollow shaft motor, and an inner spray water pipe passes through a central hole of the motor.
And a guide device is further arranged between the telescopic arm and the fixed arm.
The guiding device comprises a guiding flat key and a guiding key groove in sliding fit with the guiding flat key, the guiding flat key is mounted on the outer surface of the rear portion of the telescopic arm, the guiding key groove is arranged on the wall of the rear section of the front inner hole of the fixed arm, and the guiding flat key and the guiding key groove extend forwards and backwards.
The guide flat keys are arranged at two positions, and are arranged at 180-degree intervals in the circumferential direction of the rear part of the telescopic arm.
The telescopic cutting mechanism of the heading machine further preferably comprises a holding device, the holding device comprises a brake pad and a brake pad seat, the brake pad seat main body and the brake pad are of cylindrical structures, the brake pad is coaxially fixed on the brake pad seat main body, the inner surface of the brake pad is a cylindrical surface, the outer surface of the front part of the brake pad is an outer conical surface with small front and large back, the front part of the brake pad seat is arranged in the mounting state, the outer periphery of the brake pad seat main body is fixedly connected with cylinder rods or cylinder barrels of a plurality of piston cylinders, the cylinder barrels or cylinder rods of the piston cylinders are fixedly arranged relative to the fixed arm, the piston cylinders are distributed at intervals along the circumferential direction, the telescopic directions of the cylinder rods of the piston cylinders are all along the axial direction of the brake pad, the holding device is sleeved on the telescopic arm and is positioned at the axial interruption position of the fixed arm close to the axis, the inner hole of the front part of the fixed arm close to the interruption position is set to the inner conical surface, the taper is equal to the outer surface of the front part of the brake pad, the taper is equal to the taper of the front part of the brake pad, the inner hole of the fixed arm is fixedly arranged between the front part and the fixed arm through inserting the front part of the fixed arm.
The brake pad seat can be formed by splicing two brake pad seat units with arc-shaped middle parts and lug seats at two ends, the lug seats extend outwards along the radial direction of the arc shape of the middle part, the two lug seats are attached and fixed between the two brake pad seat units, and the periphery of the main body of the brake pad seat is fixedly connected with a cylinder rod or a cylinder barrel of the piston cylinder through the lug seats.
The utility model discloses a brake block, including the brake block, the brake block is equipped with the back of the back breach, the back breach is equipped with a plurality of front breachs and a plurality of back breachs along whole circumference on the brake block, front breach and back breach are followed the narrow slit structure of the axial extension of brake block, its length is greater than the axial dimension of brake block half, the unique opening of front breach is in the front edge of brake block, the unique opening of back breach is in the back edge of brake block, front breach and back breach one-to-one interval arrangement.
The beneficial effects of the invention are as follows:
because the cutting head, the working arm, the speed reducer, the telescopic arm and the cutting motor are connected into a whole, the whole internal parts are not telescopic any more, but the whole part is telescopic relative to the fixed arm, and the spline guiding complex structure when the traditional cutting mechanism stretches is also correspondingly canceled, the structure of the cutting mechanism is simpler, the processing and manufacturing are easier, the rigidity of the power part is better, and the telescopic travel can be designed to be larger.
Because the cutting motor adopts the hollow shaft motor, and the motor is built in the telescopic boom, the internal spray water pipe can pass through from the centre bore of the cutting motor, has reduced the size of the internal spray water seal obviously, has improved the reliability and maintainability of the internal spray system.
The propulsion cylinder is arranged in the fixed arm, so that the propulsion cylinder can be fully protected.
Because the telescopic sliding guide part adopts a cylindrical form, the guide keys are arranged on two sides, the telescopic sliding guide part is easier to manufacture compared with a traditional rectangular frame type telescopic structure, and has high reliability, and compared with the traditional cylindrical power part, the telescopic sliding guide part has simpler structure, higher reliability and easier maintenance.
Drawings
FIG. 1 is a schematic diagram of an exploded construction of one embodiment of the present invention;
FIG. 2 is a schematic longitudinal cross-sectional view (extended state) through the telescoping shaft axis of FIG. 1;
FIG. 3 is a schematic horizontal cross-sectional view (extended state) through the telescoping shaft axis of FIG. 1;
Fig. 4 is a schematic diagram of the external structure of the whole unit composed of the cutting head, the working arm, the speed reducer, the telescopic arm and the cutting motor;
FIG. 5 is a schematic view of the external structure of the fixing arm;
fig. 6 is a schematic structural view of an embodiment of the hugging device.
Description of the drawings:
1. A cutting head; 2. a working arm; 3. a speed reducer; 4. a telescoping arm; 5. a cutting motor; 6. a fixed arm; 7. a thrust cylinder; 8. guiding a flat key; 9. a guide key groove; 10. a clasping device; 101. a brake pad; 102. a brake pad seat; 103. a piston cylinder; 104. a threaded coupling.
Detailed Description
The invention discloses a telescopic cutting mechanism (which can be simply called as a cutting mechanism) of a heading machine, which comprises a cutting head 1, a working arm 2, a speed reducer 3 and a cutting motor 5 which are sequentially and coaxially connected from front to back, wherein the speed reducer and the cutting motor are fixedly arranged in a telescopic arm 4, the telescopic arm is inserted into an inner hole at the front part of a fixed arm 6 and is in sliding fit with the fixed arm front to back, one side of the inner transverse direction of the rear part of the fixed arm is provided with a pushing oil cylinder 7, one cylinder barrel and a cylinder rod of the pushing oil cylinder are connected with the fixed arm, the other cylinder barrel and the cylinder rod are connected with the telescopic arm, and the extending direction of the pushing oil cylinder is the front to back direction.
In this embodiment, the cylinder barrel of the thrust cylinder is fixed on the fixed arm, the cylinder rod is fixedly connected with the telescopic arm, and when the thrust cylinder stretches, the cylinder rod drives the telescopic arm to stretch back and forth relative to the fixed arm. Compared with the traditional cutting mechanism provided with two symmetrically arranged propelling cylinders, the structure is simpler. Because the cutting head, the working arm, the speed reducer, the telescopic arm and the cutting motor are installed to form a unit (shown in figure 4), when the telescopic arm moves forwards and backwards, all components in the unit move synchronously, and telescopic movement does not exist between the components, so that a complex spline guide structure in the traditional cutting mechanism during internal expansion is omitted, the structure of the cutting mechanism is simplified, the working reliability of the cutting mechanism is improved, and the rigidity of the telescopic structure is also improved.
The cross section shape of the sliding fit part of the telescopic arm and the fixed arm is circular.
The cutting motor adopts the hollow shaft motor, and interior spraying water pipe passes from the motor centre bore, compares with traditional adoption solid shaft motor and interior spraying water pipe through the rubber tube direct connection to the work arm, can show the size that reduces interior spraying water seal, improves interior spraying system's reliability and maintainability.
The telescopic arm and the fixed arm are also preferably provided with a guiding device, so that the telescopic movement is more stable and smooth, and the relative rotation between the telescopic arm and the fixed arm can be prevented.
The guiding device can comprise a guiding flat key 8 and a guiding key groove 9 which is in sliding fit with the guiding flat key, the guiding flat key is installed on the outer surface of the rear part of the telescopic arm, the guiding key groove is arranged on the wall of the rear section of the inner hole of the front part of the fixed arm, and the guiding flat key and the guiding key groove extend back and forth. The right side guide flat key in fig. 3 represents the right end start point of the guide key groove. The guide flat key can be fixedly connected to the telescopic arm through a bolt. In this embodiment, the guide key groove may be configured as a hollow structure.
In this embodiment, the guiding flat keys are arranged at two positions, 180 degrees apart from each other in the circumferential direction of the rear part of the telescopic arm, and are respectively located at two lateral sides of the thrust cylinder.
The telescopic cutting mechanism of the heading machine further preferably comprises a holding device 10, as shown in fig. 6, the holding device comprises a brake pad 101 and a brake pad seat 102, the main body of the brake pad seat and the brake pad are of cylindrical structures, and the brake pad is coaxially fixed on the main body of the brake pad seat. The internal surface of brake block is the face of cylinder, the anterior surface of brake block is big outer conical surface in front of little back, is located under the mounted state the place ahead of brake block seat, the periphery of the main part of brake block seat and the jar pole or the cylinder fixed connection of a plurality of piston cylinder 103, the cylinder or the jar pole of piston cylinder are relative fixed mounting of fixed arm, a plurality of piston cylinders are along circumference direction interval distribution, and its jar pole stretch out and draw back the direction all along the axial of brake block, namely the fore-and-aft direction. The enclasping device is sleeved on the telescopic arm and is positioned at the axial interruption position of the fixed arm close to the axle center (the part of the fixed arm far from the axle center is still kept as a front-back continuous whole). The inner hole of the front part of the fixed arm, which is close to the break, is set as an inner conical surface, the taper of the inner conical surface is equal to that of the outer surface of the front part of the brake pad, and the gap between the telescopic arm and the fixed arm is eliminated by wedging the front part of the brake pad into the inner hole of the front part of the fixed arm, so that no relative motion exists between the fixed arm and the telescopic arm, and the clamping is realized. The adoption of the enclasping device can obviously improve the rigidity of the cutting mechanism, reduce the vibration impact during cutting, reduce abrasion, and improve the reliability and the service life of the cutting mechanism.
The inner diameter of the main body of the brake pad seat is larger than the inner diameter of the brake pad.
The material of the brake pad is preferably high-strength spring steel.
When the cylinder rod stretches relative to the cylinder barrel, the brake pad seat drives the brake pad to reciprocate back and forth, and the front position and the rear position of the brake pad correspond to the enclasping device respectively and are in enclasping and loosening states.
In this embodiment, two of the piston cylinders are disposed 180 degrees from each other.
The brake pad seat can be formed by splicing two brake pad seat units with arc-shaped middle parts and lug seats at two ends, the lug seats extend outwards along the radial direction of the arc shape of the middle parts, the two lug seats are attached between the two brake pad seat units and are fixed through the threaded connecting piece 104, and the periphery of the main body of the brake pad seat is fixedly connected with a cylinder rod or a cylinder barrel of the piston cylinder through the lug seats.
The piston cylinder is preferably a single-acting and single-rod piston cylinder, and a disc spring is arranged in a rod cavity of the piston cylinder. The belleville spring is sleeved on the cylinder rod. Fluid medium enters the rodless cavity through the connector to push the cylinder rod to extend outwards. When the fluid medium returns through the joint, the belleville springs in the rod cavity rebound, retracting the cylinder rod.
The rear part of the brake pad can be provided with an outer cylindrical surface, the outer conical surface is adjacent to the front part and the rear part of the outer cylindrical surface, the rear part of the brake pad is fixedly embedded in the brake pad seat, and the front part of the outer cylindrical surface is preferably exposed in front of the brake pad seat in the installation state. The outer diameter of the outer cylindrical surface is generally equal to the maximum diameter of the outer conical surface.
In this embodiment, the rear portion of the brake pad may be a ring table protruding radially and preferably arranged on the outer cylindrical surface, and a ring groove is correspondingly arranged on the inner hole wall of the main body of the brake pad seat, and the ring table is radially embedded into the ring groove, so as to realize the fixed connection between the brake pad and the main body of the brake pad seat. The ring grooves can play a good role in limiting the brake pad in the radial direction and the axial direction. When the brake pad is detached, at least one brake pad seat unit is detached first, and then the brake pad is taken out.
The utility model discloses a brake block, including the brake block, the brake block is equipped with the back of the back, the back is equipped with a plurality of front notch and a plurality of back notch along whole circumference on the brake block, front notch and back notch are followed the narrow slit structure of axial extension of brake block, its length is greater than the axial dimension of brake block is half, the unique opening of front notch is in the front edge of brake block, the unique opening of back notch is in the back edge of brake block, front notch and back notch one-to-one interval arrangement constitutes S type breach. By utilizing the deformation of the S-shaped notch, when the enclasping device is in an enclasping state, the front part of the brake pad and other parts adjacent to the inside and the outside can be wedged tightly, so that enclasping is more reliable.
Before the telescopic action, the rodless cavity of the piston cylinder of the enclasping device is filled with oil, and the piston and the cylinder rod drive the brake pad seat and the brake pad to move backwards, so that the conical brake pad of the enclasping device is unlocked, a gap is restored between the fixed arm and the telescopic arm, and the smooth telescopic action is ensured. After the telescopic action is stopped and before the cutting mechanism is ready for operation, the rodless cavity of the piston cylinder of the enclasping device returns oil, the disc spring in the rod cavity of the piston cylinder pushes the brake pad seat and the brake pad to move forwards, the brake pad enclasps the telescopic arm forwards, the sliding pair gap between the fixed arm and the telescopic arm is eliminated, the quasi-rigidity is kept, the vibration impact during cutting is effectively reduced, and the working reliability and the service life of the cutting mechanism are improved.
Through setting up hug tightly the device, keep relatively static between fixed arm and the flexible arm during operation, consequently can reduce the wearing and tearing of the fixed wear-resisting cover on the fixed arm inner hole wall, improve cutting mechanism's life.
Claims (10)
1. The utility model provides a telescopic cutting mechanism of entry driving machine which characterized in that: the cutting head, the working arm, the speed reducer and the cutting motor are coaxially connected from front to back in sequence, the cutting head, the working arm, the speed reducer and the cutting motor are fixedly arranged in the telescopic arm, the telescopic arm is inserted into the inner hole at the front part of the fixed arm and is in sliding fit with the fixed arm back and forth, a propulsion oil cylinder is arranged in the rear part of the fixed arm, one cylinder barrel and one cylinder rod of the propulsion oil cylinder are connected with the fixed arm, the other cylinder barrel and the cylinder rod of the propulsion oil cylinder are connected with the telescopic arm, the telescopic direction of the propulsion oil cylinder is the front-back direction, and the cross section shape of the sliding fit part of the telescopic arm and the fixed arm is circular; the utility model provides a brake pad, including the brake pad, hold tightly the device and include brake pad and brake pad seat, the main part of brake pad seat with the brake pad is cylindrical structure, the brake pad coaxial fixation is in the main part of brake pad seat, the internal surface of brake pad is the face of the outer circular cone that is big in front of the brake pad, is located under the installed state the place ahead of brake pad seat, the periphery of the main part of brake pad seat and the cylinder pole or the cylinder fixed connection of a plurality of piston jar, the cylinder pole of piston jar or the cylinder pole is relative fixed mounting of fixed arm, a plurality of piston jar along circumference direction interval distribution, and the flexible direction of its cylinder pole all is followed the axial of brake pad, hold tightly the device cover is in on the flexible arm, and be located the axial break that the fixed arm is close to the axle center, the hole of the anterior portion of fixed arm next-door break is the face, and its tapering equals the tapering of the anterior surface of brake pad, through inserting the anterior part of brake pad with the cylinder pole or cylinder pole fixed connection of a plurality of piston jar, the cylinder pole is relative the fixed arm is in front of a plurality of gaps, the same size is in front of the axial gap and the same gap is all the gap is in front of the gap between the front of a plurality of gap and the front gap, and the gap is all the gap is arranged.
2. The retractable cutting mechanism of a heading machine as recited in claim 1, wherein: the cutting motor adopts a hollow shaft motor, and an inner spray water pipe passes through a central hole of the motor.
3. The retractable cutting mechanism of a heading machine as recited in claim 1, wherein: and a guide device is further arranged between the telescopic arm and the fixed arm.
4. A heading machine telescoping cutting mechanism as defined in claim 3, wherein: the guiding device comprises a guiding flat key and a guiding key groove in sliding fit with the guiding flat key, the guiding flat key is mounted on the outer surface of the rear portion of the telescopic arm, the guiding key groove is arranged on the wall of the rear section of the front inner hole of the fixed arm, and the guiding flat key and the guiding key groove extend forwards and backwards.
5. The retractable cutting mechanism of a heading machine as recited in claim 4, wherein: the guide flat keys are arranged at two positions, and are arranged at 180-degree intervals in the circumferential direction of the rear part of the telescopic arm.
6. The retractable cutting mechanism of a heading machine as recited in claim 2, wherein: and a guide device is further arranged between the telescopic arm and the fixed arm.
7. The retractable cutting mechanism of heading machine as recited in claim 6, wherein: the guiding device comprises a guiding flat key and a guiding key groove in sliding fit with the guiding flat key, the guiding flat key is mounted on the outer surface of the rear portion of the telescopic arm, the guiding key groove is arranged on the wall of the rear section of the front inner hole of the fixed arm, and the guiding flat key and the guiding key groove extend forwards and backwards.
8. The retractable cutting mechanism of a heading machine as recited in claim 7, wherein: the guide flat keys are arranged at two positions, and are arranged at 180-degree intervals in the circumferential direction of the rear part of the telescopic arm.
9. A retractable cutting mechanism for a heading machine as defined in claim 1, 2,3, 4, 5, 6, 7 or 8, wherein: the brake block is formed by splicing two brake block units with arc middle parts and lug blocks at two ends, the lug blocks extend outwards along the radial direction of the arc of the middle parts, the two lug blocks between the two brake block units are attached and fixed, and the periphery of the main body of the brake block is fixedly connected with a cylinder rod or a cylinder barrel of the piston cylinder through the lug blocks.
10. The retractable cutting mechanism of a heading machine as recited in claim 9, wherein: the piston cylinder adopts a single-action and single-rod piston cylinder, and a disc spring is arranged in a rod cavity of the piston cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765631.5A CN110374587B (en) | 2019-08-19 | 2019-08-19 | Telescopic cutting mechanism of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910765631.5A CN110374587B (en) | 2019-08-19 | 2019-08-19 | Telescopic cutting mechanism of heading machine |
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| Publication Number | Publication Date |
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| CN110374587A CN110374587A (en) | 2019-10-25 |
| CN110374587B true CN110374587B (en) | 2024-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910765631.5A Active CN110374587B (en) | 2019-08-19 | 2019-08-19 | Telescopic cutting mechanism of heading machine |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335697B (en) * | 2023-03-06 | 2023-11-03 | 无锡华瀚能源装备科技有限公司 | Cutting head for self-planning cutting path heading machine |
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| Publication number | Publication date |
|---|---|
| CN110374587A (en) | 2019-10-25 |
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