CN212376600U - Hydraulic support of prestressed steel strand prospecting drilling machine - Google Patents
Hydraulic support of prestressed steel strand prospecting drilling machine Download PDFInfo
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- CN212376600U CN212376600U CN202022120266.3U CN202022120266U CN212376600U CN 212376600 U CN212376600 U CN 212376600U CN 202022120266 U CN202022120266 U CN 202022120266U CN 212376600 U CN212376600 U CN 212376600U
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Abstract
The utility model discloses a prestressed steel strand prospecting drill hydraulic support, wherein two hydraulically telescopic supporting legs are hinged on a support base, the two supporting legs are supported by a supporting leg oil cylinder to rotate, and the bottom ends of the supporting leg oil cylinders are connected on the support base; a hydraulic gyrator cross arm is transversely and fixedly installed on one of the supporting legs, a hydraulic gyrator hollow sleeve is sleeved outside the hydraulic gyrator cross arm, one side of the hydraulic gyrator hollow sleeve is fixedly installed with a hydraulic gyrator, the other side of the hydraulic gyrator is fixedly connected with the other supporting leg, and a drilling machine lower sliding plate is connected outside the hydraulic gyrator hollow sleeve; the hydraulic gyrator drives the drilling machine lower sliding plate to rotate when rotating, and then drives a drilling machine sliding frame connected with the drilling machine lower sliding plate to rotate, and the drilling machine sliding frame is used for mounting a prestressed steel strand prospecting drilling machine host machine. The utility model discloses a hydraulic support can be used to the rig to strut, and labour saving and time saving and reducible scene installation are dangerous.
Description
Technical Field
The utility model relates to a drilling equipment field especially relates to a prestressing force steel strand wires prospecting drill hydraulic support.
Background
When the prestressed steel strand prospecting drilling machine is used for changing holes and moving the machine for supporting every 3-5 days in a mine well, 4 persons are needed to level the ground, anti-skid battens are padded, the sequence of installing the prestressed steel strand prospecting drilling machine is that 2 lead screw stand columns are firstly installed, a rock roof is required to be jacked up, battens on the ground are jacked down, a lead screw is needed to be fastened by one person, the lead screw stand columns with the length of more than 3 meters are erected by 2 other persons, the fourth person measures the verticality of the lead screw stand columns, one lead screw stand column is installed, the second lead screw stand column is installed in sequence, after the 2 lead screw stand columns are installed, 2 persons move the drilling machine rotary disc to be clamped on the 2 lead screw stand columns to be held, 2 persons install 8 bolts of the rotary disc pressing plate behind the lead screw stand columns, after the rotary disc is installed, the prestressed steel strand prospecting drilling machine rotary head is installed on the rotary disc by 2 persons, one person fastens 2 bolts behind the lead screw stand column, and the rotary, the tail chain is hung to lead screw stand top department on the cat ladder alone, move the prestressing force steel strand wires prospecting drilling machine balladeur train below the lead screw stand by 4 individuals again, tie up the hoist and mount tail chain, hoist to the overhead 4 bolt fastening of using of turning round, hoist hydraulic motor gear box with the tail chain, 1 round pin hub fixation on the prestressing force steel strand wires prospecting drilling machine balladeur train with 2 bolts, hoist hydraulic motor again, install on the gear box by 4 bolt fastening, after the prestressing force steel strand wires prospecting drilling machine has been transferred and has been crept into the stock angle, 2 bolts of fastening turning round. The main machine of the prestressed steel strand prospecting drilling machine and the hydraulic pump station are connected with a hydraulic oil pipe, the machine is started to drill an anchor rod at the front end of the fixed prestressed steel strand prospecting drilling machine, after an anchor rod hole is drilled, the fixed anchor rod is connected with the prestressed steel strand prospecting drilling machine, and a connecting bolt is tightened. And (4) loosening the 2 bolts of the rotary head, adjusting the prestressed steel strand prospecting drilling machine to the angle of drilling and coring for fixing by 4 persons, and starting the drilling and coring operation. The prestressed steel strand prospecting drilling machine is installed and the anchor rod hole is drilled, 4 persons can complete the supporting work of the drilling machine within 7-8 hours, time and labor are wasted, and safety risks exist.
When the drilling machine is moved, a worker is required to gradually disassemble the drilling machine, a hydraulic motor of the drilling machine is disassembled by a chain block, a gearbox of the hydraulic motor is disassembled by the chain block, a sliding frame of the drilling machine is disassembled by the chain block, a rotary head is disassembled by the chain block, a rotary disc is disassembled by the chain block, and 2 lead screw stand columns are disassembled again.
Therefore, the above-mentioned conventional prestressed steel strand prospecting drilling machine still has inconvenience and defects in structure and use, and needs to be further improved. How to create a hydraulic support for supporting a prestressed steel strand prospecting drilling machine, which is time-saving and labor-saving and can reduce the danger of field installation, becomes an object which is greatly required to be improved in the industry at present.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide labour saving and time saving and dangerous prestressing force steel strand wires prospecting drilling machine of reducible scene installation strut and use hydraulic support.
In order to solve the technical problem, the utility model adopts the following technical scheme:
a prestressed steel strand prospecting drilling machine hydraulic support comprises a support base, wherein two hydraulically telescopic supporting legs are hinged to the support base, the two supporting legs are supported by a supporting leg oil cylinder to rotate, and the bottom ends of the supporting leg oil cylinders are connected to the support base; a hydraulic gyrator cross arm is transversely and fixedly installed on one of the supporting legs, a hydraulic gyrator hollow sleeve is sleeved outside the hydraulic gyrator cross arm, one side of the hydraulic gyrator hollow sleeve is fixedly installed with a hydraulic gyrator, the other side of the hydraulic gyrator is fixedly connected with the other supporting leg, and a drilling machine lower sliding plate is connected outside the hydraulic gyrator hollow sleeve; the hydraulic gyrator drives the drilling machine lower sliding plate to rotate when rotating, and then drives a drilling machine sliding frame connected with the drilling machine lower sliding plate to rotate, and the drilling machine sliding frame is used for mounting a prestressed steel strand prospecting drilling machine host machine.
As a further improvement of the utility model, the drill lower sliding plate and the drill sliding frame are fixed by a pressing plate; the drilling machine sliding frame further comprises double oil outlet cylinders, piston rods extending out of two ends of each double oil outlet cylinder are fixed to the front end and the rear end of the drilling machine sliding frame, double oil outlet cylinder bodies are fixed to the drilling machine lower sliding plate, and the drilling machine sliding frame is driven to move back and forth through reciprocating motion of the double oil outlet cylinder bodies.
Furthermore, the support base comprises two skids and a skid beam for connecting the two skids, a supporting leg base is welded on each skid, the two supporting legs are respectively installed on the supporting leg bases through pin shafts, supporting leg oil cylinder cross arms are installed below the two supporting legs, the supporting leg oil cylinder cross arms are connected with one ends of the supporting leg oil cylinders, and the other ends of the supporting leg oil cylinders are connected to the skid beam.
Furthermore, one side of the cross arm of the hydraulic gyrator is fixedly connected with one supporting leg through a hoop, and one side of the hollow sleeve of the hydraulic gyrator is connected and installed with the hydraulic gyrator through a flange; and the other side of the hydraulic gyrator is provided with a hoop connected with the other supporting leg by a flange.
And the drilling machine height adjusting oil cylinder is used for being arranged between the drilling machine lower sliding plate and the support base, extending out to jack up the drilling machine lower sliding plate and adjusting the height of the two hoops.
The hydraulic auxiliary upright post is matched with the hydraulic auxiliary upright post, and the hydraulic auxiliary upright post cross arm is vertically connected with the hydraulic auxiliary upright post, and the height of the hydraulic auxiliary upright post cross arm on the hydraulic auxiliary upright post is adjustable; the upper end and the lower end of the hydraulic auxiliary upright post are respectively used for pressing a rock roof and a support base, and the hydraulic auxiliary upright post cross arm is used for supporting the tail of a drill carriage.
Furthermore, the hydraulic auxiliary upright post cross arm is connected with the hydraulic auxiliary upright post through an anchor ear.
Furthermore, the two supporting legs are arranged at the front section of the bracket base; two forward-tilting prevention supporting legs are hinged to the front end of the support base, and each forward-tilting prevention supporting leg is hinged to one supporting leg through a forward-tilting prevention supporting leg pull rod; when the supporting leg oil cylinder extends in place, the forward-tilting prevention supporting leg is tightly attached to the ground, and when the supporting leg oil cylinder retracts, the forward-tilting prevention supporting leg is in a state of being vertical to the ground.
Further, the hydraulic gyrator can rotate to drive the drill carriage to rotate 180 degrees.
By adopting the technical scheme, the utility model discloses following beneficial effect has at least:
1. all hydraulic operations are adopted, the prestressed steel strand prospecting drilling machine is supported by the hydraulic oil cylinders in a mutual matching mode, the prestressed steel strand prospecting drilling machine is quickly supported in a short time, the multi-person assistance is not needed, and the climbing supporting drilling machine is not needed.
2. When the mining exploration drilling machine is moved, the prestressed steel strand prospecting drilling machine does not need to be disassembled, and the mining exploration drilling machine is hydraulically operated, folded and hoisted to the next working area, so that the time is saved, and the dangerous accidents of field installation are reduced.
3. The hydraulic auxiliary upright column is used as an auxiliary supporting leg, drilling of an anchor rod hole is not needed, time is saved, and the drilling machine is more stable and firm due to the support of 3 hydraulic supporting legs.
4. The manual labor of workers is reduced, the installation time is reduced, the drilling efficiency of the drilling machine is increased, and the economic benefits of the workers and the mine are increased.
Drawings
The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
FIG. 1 is a schematic drawing of a prestressed strand mineral-prospecting drill rig being set up;
FIG. 2 is a schematic folding view of a prestressed strand mineral exploration drilling machine;
fig. 3 is a change state diagram of the prestressed steel strand ore-exploring drilling machine.
In the figure:
1. a skid; 2. supporting the oil cylinder base; 3. erecting the supporting legs; 4. supporting the supporting leg oil cylinder; 5. a forward leaning prevention support leg; 6. supporting a cross arm of the supporting leg oil cylinder; 7. a hydraulic gyrator hollow sleeve; 8. a hydraulic gyrator; 9. a drill lower slide plate; 10. double oil outlet cylinders; 11. a drill carriage; 12. a cylinder for adjusting the height of the drilling machine; 13. a hydraulic auxiliary upright post; 14. the anti-forward support leg pull rod; 15. a hydraulic gyrator cross arm; 16. and the hydraulic auxiliary upright post cross arm.
Detailed Description
As shown in fig. 1 and 2, the hydraulic support of the prestressed steel strand prospecting drilling machine comprises a support base, wherein two hydraulically telescopic supporting legs 3 are hinged to the support base, the two supporting legs 3 are supported by a supporting leg oil cylinder 4 to rotate, and the bottom ends of the supporting leg oil cylinders 4 are connected to the support base; a hydraulic gyrator cross arm 15 is transversely and fixedly installed on one of the supporting legs 3, a hydraulic gyrator hollow sleeve 7 is sleeved outside the hydraulic gyrator cross arm 15, one side of the hydraulic gyrator hollow sleeve 7 is fixedly installed with one hydraulic gyrator 8, the other side of the hydraulic gyrator 8 is fixedly connected with the other supporting leg 3, and a drilling machine lower sliding plate 9 is connected outside the hydraulic gyrator hollow sleeve 7; the hydraulic gyrator 8 drives the hydraulic gyrator hollow sleeve 7 to rotate when rotating, the hydraulic gyrator hollow sleeve 7 rotates to drive the drilling machine lower sliding plate 9 to rotate, and then the drilling machine sliding frame 11 is driven to rotate, a prestressed steel strand prospecting drilling machine host machine is installed on the drilling machine sliding frame 11, and the drilling machine can be driven to rotate 180 degrees to adjust the drilling angle of the drilling machine.
When the device works, only 2 persons are used on the site, the site is cleared, the hydraulic support of the prestressed steel strand prospecting drilling machine is unloaded into the site, a hydraulic oil pipe is connected with a hydraulic pump station, and two hydraulic telescopic supporting legs 3 are rotatably supported by supporting leg oil cylinders 4 to be in a state of being vertical to the ground; then the main machine of the prestressed steel strand prospecting drilling machine arranged on the sliding frame 11 of the drilling machine is supported; two supporting legs 3 extend out to support a rock roof, a prestressed steel strand prospecting drilling machine is fixed, a main rotating machine is rotated by a hydraulic gyrator 8 on the supporting legs 3 (a cross arm 15 of the hydraulic gyrator does not rotate, and the reverse force is generated when the supporting prestressed steel strand prospecting drilling machine is used for supporting the prestressed steel strand prospecting drilling machine to drill and core hole taking angles are set), core taking can be formally performed, all the actions are completed by hydraulic operation without manual assistance, compared with the installation of a common prestressed steel strand prospecting drilling machine, the installation time of 7 hours or more is saved, the installation of the prestressed steel strand prospecting drilling machine by a hydraulic support is completed by 2 persons in half an hour, field personnel are reduced, the safety accident rate is reduced, the manual labor of installation workers is reduced, and the installation efficiency of the drilling machine is increased.
Preferably, the hydraulic support further comprises a matched hydraulic auxiliary upright 13 and a hydraulic auxiliary upright cross arm 16 vertically connected with the hydraulic auxiliary upright 13, wherein the height of the hydraulic auxiliary upright cross arm 16 on the hydraulic auxiliary upright 13 is adjustable, and if the hydraulic auxiliary upright cross arm and the hydraulic auxiliary upright cross arm can be connected through a hoop; before formal drilling coring, the supporting device can be used for auxiliary supporting, the upper end and the lower end of the hydraulic auxiliary upright post 13 are respectively pressed against a rock roof and a support base, and the hydraulic auxiliary upright post cross arm 16 supports the tail part of the drill carriage 11. The hydraulic auxiliary upright post 13 is matched with the two supporting legs 3, the whole supporting structure is more stable, drilling of an anchor rod hole is not needed, time is saved, and the hydraulic auxiliary upright post cross arm 16 can support the reverse force generated when a drilling machine drills.
The lower sliding plate 9 and the sliding frame 11 of the drilling machine are fixed through a pressing plate, one side of the lower sliding plate 9 of the drilling machine is provided with a double-oil-outlet cylinder 10, piston rods extending out of two ends of the double-oil-outlet cylinder 10 are fixed at the front end and the rear end of the sliding frame 11 of the drilling machine, the double-oil-outlet cylinder body is fixed on the lower sliding plate 9 of the drilling machine, the sliding frame 11 of the drilling machine is driven to move back and forth through reciprocating motion of the double-oil-outlet cylinder body, and the distance between the front section of the prestressed steel strand.
The support base comprises two skids 1 and a skid beam for connecting the two skids 1, wherein a supporting leg base 2 is welded on each skid 1, two supporting legs 3 are respectively installed on the supporting leg base 2 through pin shafts, a supporting leg oil cylinder cross arm 6 is installed below the two supporting legs 3, the supporting leg oil cylinder cross arm 6 is connected with one end of a supporting leg oil cylinder 4, and the other end of the supporting leg oil cylinder 4 is connected to the skid beam. By arranging the form of the skid, the hydraulic support can be conveniently moved when the hydraulic support needs to be moved in a small range on site; and the supporting leg 3 can be supported only by one supporting leg oil cylinder 4 through the connection of the supporting leg oil cylinder cross arm 6.
When the drilling machine drills at an upward angle, the drill carriage 11 needs to be adjusted upwards on the supporting legs 3, so that the tail of the drill carriage 11 has enough space away from the ground, in order to realize height adjustment, one side of a cross arm 15 of the hydraulic gyrator is fixedly connected with one supporting leg 3 through a hoop, and one side of a hollow sleeve 7 of the hydraulic gyrator is connected and provided with the hydraulic gyrator 8 through a flange; the other side of the hydraulic gyrator 8 is provided with a hoop connected with the other supporting leg 3 by a flange. During actual adjustment, the hoop can be loosened, and then the drilling machine height adjusting oil cylinder 12 is matched, wherein the drilling machine height adjusting oil cylinder 12 is used for being arranged between the drilling machine lower sliding plate 9 and the support base, extends out to jack up the drilling machine lower sliding plate 9, and adjusts the heights of the two hoops to meet the angle requirement of upward drilling.
The two supporting legs 3 are arranged at the front section of the bracket base; two forward-tilting prevention supporting legs 5 are hinged to the front end of the support base, and each forward-tilting prevention supporting leg 5 is hinged to one supporting leg 3 through a forward-tilting prevention supporting leg pull rod 14; when the supporting leg oil cylinder 4 extends to the right position, the forward-leaning prevention supporting leg 5 is tightly attached to the ground, the drilling machine works normally, when the supporting leg oil cylinder 4 retracts, the forward-leaning prevention supporting leg 5 is in a folding state perpendicular to the ground, and the transportation space can be reduced by folding along with the supporting leg 3.
As shown in fig. 2, after the prestressed steel strand prospecting drilling rig finishes designing the depth of a core hole, the prestressed steel strand prospecting drilling rig needs to be moved to another work area for drilling and coring, firstly, the hydraulic auxiliary upright column 13 is retracted for manual disassembly, then the support leg 3 is retracted, the prestressed steel strand prospecting drilling rig is rotated by the hydraulic gyrator 8 to be vertical to the support leg 3, and the support leg cylinder 4 is retracted to enable the skid 1 and the prestressed steel strand prospecting drilling rig to be horizontal, the forward-tilting-preventing leg pull rod 14 connected with the skid 1 is pulled up by the forward-tilting-preventing leg connecting rod 14 along with the support leg 3 being laid flat, the folding forward-tilting-preventing leg 5 is pulled up by the forward-tilting-preventing leg connecting rod 14, so that the transportation volume is reduced. Of course, as shown in fig. 3, the hydraulic gyrator 8 can be used to rotate the prestressed steel strand prospecting drill to be parallel to the supporting legs 3, and then the folding operation is performed.
The utility model discloses a prestressing force steel strand wires prospect rig hydraulic support, when using, can realize the all-hydraulic operation of prestressing force steel strand wires prospect rig and strut, prop up the landing leg hydro-cylinder 4 and prop up the landing leg 3 and cooperate and can 90 degrees hydraulic pressure prop up and stabilize the rig, two play hydro-cylinders 10 can drive the prestressing force steel strand wires prospect rig balladeur train and move back and forth to the space of regulation prestressing force steel strand wires prospect rig anterior segment and cliff; the hydraulic gyrator 8 rotates to drive the prestressed steel strand prospecting drilling machine to rotate 180 degrees in one direction; the skid 1 is rotated to drill and core in 360 degrees. In addition, the upper hydraulic support can also be horizontally folded without disassembling the drilling machine so as to facilitate transportation.
The above description is only for the preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various modifications, equivalent changes and modifications using the above-described technical content, all of which fall within the scope of the present invention.
Claims (9)
1. A prestressed steel strand prospecting drilling machine hydraulic support is characterized by comprising a support base, wherein two hydraulically telescopic supporting legs are hinged to the support base, the two supporting legs are supported by a supporting leg oil cylinder to rotate, and the bottom ends of the supporting leg oil cylinders are connected to the support base;
a hydraulic gyrator cross arm is transversely and fixedly installed on one of the supporting legs, a hydraulic gyrator hollow sleeve is sleeved outside the hydraulic gyrator cross arm, one side of the hydraulic gyrator hollow sleeve is fixedly installed with a hydraulic gyrator, the other side of the hydraulic gyrator is fixedly connected with the other supporting leg, and a drilling machine lower sliding plate is connected outside the hydraulic gyrator hollow sleeve; the hydraulic gyrator drives the drilling machine lower sliding plate to rotate when rotating, and then drives a drilling machine sliding frame connected with the drilling machine lower sliding plate to rotate, and the drilling machine sliding frame is used for mounting a prestressed steel strand prospecting drilling machine host machine.
2. The prestressed steel strand prospecting drill hydraulic support frame of claim 1, wherein the drill lower sliding plate and the drill carriage are fixed by a pressing plate; the drilling machine sliding frame further comprises double oil outlet cylinders, piston rods extending out of two ends of each double oil outlet cylinder are fixed to the front end and the rear end of the drilling machine sliding frame, double oil outlet cylinder bodies are fixed to the drilling machine lower sliding plate, and the drilling machine sliding frame is driven to move back and forth through reciprocating motion of the double oil outlet cylinder bodies.
3. The hydraulic support of a prestressed steel strand prospecting drilling machine according to claim 1, wherein the support base comprises two skids and a skid beam connecting the two skids, a supporting leg base is welded on each of the two skids, the two supporting legs are respectively mounted on the supporting leg bases through pin shafts, supporting leg cylinder cross arms are mounted below the two supporting legs, the supporting leg cylinder cross arms are connected with one end of the supporting leg cylinder, and the other end of the supporting leg cylinder is connected to the skid beam.
4. The hydraulic support of the prestressed steel strand prospecting drill according to claim 1, wherein one side of the cross arm of the hydraulic gyrator is fixedly connected with a supporting leg through a hoop, and one side of the hollow sleeve of the hydraulic gyrator is connected and installed with the hydraulic gyrator through a flange; and the other side of the hydraulic gyrator is provided with a hoop connected with the other supporting leg by a flange.
5. The prestressed steel strand prospecting drill hydraulic support frame according to claim 4, further comprising a drill height adjusting oil cylinder which is matched with the prestressed steel strand prospecting drill hydraulic support frame, wherein the drill height adjusting oil cylinder is arranged between the drill lower sliding plate and the support frame base, and can extend out to jack up the drill lower sliding plate and adjust the height of the two anchor ears.
6. The hydraulic support of the prestressed steel strand prospecting drill rig according to any one of claims 1 to 5, further comprising a matched hydraulic auxiliary stand column and a hydraulic auxiliary stand column cross arm vertically connected with the hydraulic auxiliary stand column, wherein the height of the hydraulic auxiliary stand column cross arm on the hydraulic auxiliary stand column is adjustable;
the upper end and the lower end of the hydraulic auxiliary upright post are respectively used for pressing a rock roof and a support base, and the hydraulic auxiliary upright post cross arm is used for supporting the tail of a drill carriage.
7. The hydraulic support of the prestressed steel strand prospecting drill rig according to claim 6, wherein the hydraulic auxiliary column cross arm and the hydraulic auxiliary column are connected through a hoop.
8. The prestressed steel strand prospecting drill hydraulic support frame of any one of claims 1-5, wherein the two supporting legs are mounted at the front section of the support frame base; two forward-tilting prevention supporting legs are hinged to the front end of the support base, and each forward-tilting prevention supporting leg is hinged to one supporting leg through a forward-tilting prevention supporting leg pull rod; when the supporting leg oil cylinder extends in place, the forward-tilting prevention supporting leg is tightly attached to the ground, and when the supporting leg oil cylinder retracts, the forward-tilting prevention supporting leg is in a state of being vertical to the ground.
9. The prestressed steel strand prospecting drill hydraulic support frame of any one of claims 1 to 5, wherein the drill carriage is rotated 180 degrees by rotation of the hydraulic gyrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022120266.3U CN212376600U (en) | 2020-09-24 | 2020-09-24 | Hydraulic support of prestressed steel strand prospecting drilling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022120266.3U CN212376600U (en) | 2020-09-24 | 2020-09-24 | Hydraulic support of prestressed steel strand prospecting drilling machine |
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| CN212376600U true CN212376600U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022120266.3U Active CN212376600U (en) | 2020-09-24 | 2020-09-24 | Hydraulic support of prestressed steel strand prospecting drilling machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963070A (en) * | 2020-09-24 | 2020-11-20 | 赤峰市浩峰钻机有限责任公司 | Hydraulic support of prestressed steel strand prospecting drilling machine |
| CN111963070B (en) * | 2020-09-24 | 2024-05-31 | 赤峰市浩峰钻机有限责任公司 | Hydraulic support of prestressed steel strand exploring drill |
-
2020
- 2020-09-24 CN CN202022120266.3U patent/CN212376600U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111963070A (en) * | 2020-09-24 | 2020-11-20 | 赤峰市浩峰钻机有限责任公司 | Hydraulic support of prestressed steel strand prospecting drilling machine |
| CN111963070B (en) * | 2020-09-24 | 2024-05-31 | 赤峰市浩峰钻机有限责任公司 | Hydraulic support of prestressed steel strand exploring drill |
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