CN212867525U

CN212867525U - Feeding speed conversion monitoring device of full-hydraulic tunnel drilling machine

Info

Publication number: CN212867525U
Application number: CN202021940909.2U
Authority: CN
Inventors: 马良慧; 董青红; 赵华山; 王言龙; 于庆; 李笔文; 尹杨林
Original assignee: China University of Mining and Technology CUMT; Huating Coal Group Co Ltd
Current assignee: China University of Mining and Technology CUMT; Huating Coal Group Co Ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-02
Anticipated expiration: 2030-09-08

Abstract

The utility model relates to a tunnel all-hydraulic drill feed speed conversion monitoring devices especially is applicable to gallery probing technical field. The device comprises a conversion cylinder and a monitoring device, wherein the conversion cylinder and the monitoring device are mutually connected through a testing pipeline, and the other end of the conversion cylinder is connected with the tail end of a feeding hydraulic cylinder to be detected through a connecting piece; the feeding hydraulic cylinder comprises a piston cylinder and a piston arranged in the piston cylinder, the conversion cylinder comprises a conversion cylinder body, the front end of the conversion cylinder body is provided with a conversion cylinder fixing end, the outer side of the conversion cylinder body is provided with a mud-water isolation cover, the inner side of the conversion cylinder body is provided with a test piston, the mud-water isolation cover is arranged opposite to an opening of the conversion cylinder body, and the monitoring device comprises a liquid supplementing bottle, a tester, a base and a static level tester. The device has the advantages that the device can be automatically monitored, is not influenced by underground electromagnetic interference, is intrinsically safe, is not influenced by axial vibration of the drill rod, realizes monitoring at a position far away from an orifice, saves the nervous construction space at the orifice and improves the monitoring safety.

Description

Feeding speed conversion monitoring device of full-hydraulic tunnel drilling machine

Technical Field

The utility model relates to a tunnel all-hydraulic drill feeds speed conversion monitoring devices, is particularly useful for tunnel all-hydraulic drill feeds speed conversion monitoring devices that gallery probing technical field used.

Background

The traditional sensor for monitoring the feeding speed of the drilling machine accurately measures the position by generating a strain pulse signal through the intersection of two different magnetic fields, however, the power supply mode of a special underground power supply system can generate electromagnetic interference, large electromechanical equipment has high power and relatively concentrated positions, and the sensor is frequently started and stopped, can generate serious electromagnetic interference and influences the use of a displacement sensor. Electric sparks, electric arcs, hot surfaces, scorching particles and the like can occur in the normal operation and fault states of underground electric equipment, and the electric sparks, the electric arcs, the hot surfaces, the scorching particles and the like have certain energy and can be used as an ignition source and a heat source for igniting mine gas and coal dust, so that the underground electric equipment is not suitable for using common electronic equipment to prevent gas and coal dust explosion accidents. A large amount of splashed slurry can be generated in the drilling process, the requirements of electronic equipment on water resistance and moisture resistance are not met, and the feeding speed monitoring device is not suitable for the electronic equipment in order to avoid slurry pollution. Furthermore, the effect of axial vibration of the drill rod also makes the sensors commonly used in the industry to detect linear displacement unsuitable for feed speed measurement. In addition, the drilling construction process is complex, a series of operations such as installing a water stop sleeve, driving mortar for fixing, driving an anchor rod for fixing, installing a gate valve, performing a pressure test and the like are often required, the underground drilling construction space is short, and if monitoring is performed at an orifice, the construction and monitoring work can be mutually hindered. Because the safe space of construction site is on the small side, when the big elevation angle of construction is drilled, if the drilling tool flees out from the downthehole monitoring personnel near can be injure to the downthehole, monitoring personnel's safety risk can directly improve several times. Therefore, how to provide a drilling machine feeding speed monitoring device with high monitoring precision, convenience, high efficiency and high safety performance becomes a technical problem that the drilling machine construction industry needs to be further perfected and optimized.

Disclosure of Invention

Aiming at the defects of the technology, the feeding speed conversion monitoring device of the roadway full hydraulic drilling machine is simple in structure, safe, reliable and simple to use, and does not generate heat. The underground explosion-proof monitoring system has the advantages of real-time automatic monitoring, no influence of underground electromagnetic interference, meeting the requirement of underground equipment explosion prevention, no influence of axial vibration of the drill rod, realizing monitoring at a position far away from an orifice, saving the nervous construction space at the orifice and improving the monitoring safety.

In order to realize the purpose, the utility model discloses a full-hydraulic drilling machine feeding speed conversion monitoring devices in tunnel, it includes conversion jar and monitoring devices, through testing the pipeline interconnect between conversion jar and the monitoring devices, the other end of conversion jar is connected with the feeding pneumatic cylinder tail end that detects through the connecting piece;

the feeding hydraulic cylinder comprises a piston cylinder and a piston arranged in the piston cylinder, the piston divides the space in the piston cylinder into a rodless cavity and a rod cavity, the rodless cavity is connected with a feeding oil way, the rod cavity is connected with a drill withdrawal oil way, a hydraulic push rod is arranged on the piston, and a connecting piece fixing groove A is arranged at the tail end of the hydraulic push rod;

the conversion cylinder comprises a conversion cylinder body, the front end of the conversion cylinder body is provided with a conversion cylinder fixed end, the outer side of the conversion cylinder body is provided with a mud-water isolation cover, the inner side of the conversion cylinder body is provided with a test piston, the mud-water isolation cover is arranged opposite to an opening of the conversion cylinder body, the tail end of the mud-water isolation cover is provided with an opening matched with the test piston, the opening is provided with a fixing nut, the rear end of the test piston is internally provided with a fixing thread matched with the fixing nut, the tail end of the test piston is provided with a connecting piece fixing groove B, the head of the test piston is provided with a sealing ring, a test liquid cavity is arranged between the head;

the monitoring device comprises a liquid supplementing bottle, a tester, a base and a static leveling tester, wherein the tester and the static leveling tester are fixed on the base, the side wall of the tester is connected with the liquid supplementing bottle through a liquid supplementing pipe, the lower part of the side wall of the tester is connected with a conversion cylinder through a test pipeline, the bottom of the tester is provided with a flow state adjusting cabin of an expansion cavity, and the flow state adjusting cabin is connected with the static leveling tester through a leveling test pipe.

The connecting piece fixing groove B of the conversion cylinder is connected with the connecting piece fixing groove A of the feeding hydraulic cylinder through a connecting piece, so that the conversion cylinder is linked with the feeding hydraulic cylinder, and a feeding hydraulic cylinder fixing end is arranged at the connecting piece fixing groove A.

The test pipeline is a stainless steel thin pipe, the outer side of the test pipeline is wrapped by rubber, and the inner diameter range of the test pipeline is 2-5 mm.

The conversion cylinder is fixed on the feeding guide rail of the drilling machine through a conversion cylinder bracket, the angle and the position of the conversion cylinder are adjustable and parallel to the feeding direction, the conversion cylinder bracket comprises a sliding groove, the bottom of the sliding groove is provided with a fixing screw hole, and the conversion cylinder bracket fixes the conversion cylinder on the feeding guide rail of the drilling machine through the sliding groove and the fixing screw hole.

The mud-water isolation cover is formed by a corrosion-resistant and wear-resistant steel annular shell, the length of the mud-water isolation cover is consistent with that of the conversion cylinder, and the mud-water isolation cover is fixed on the test piston through a fixing thread and a fixing nut with adjustable positions and moves synchronously to protect the test piston.

The tester comprises a test tube and a flow state adjusting cabin arranged at the bottom of the test tube, the test tube is fixed with the flow state adjusting cabin of the enlarged cavity structure through threads, a liquid supplementing tube is arranged above the test tube, the lower part of the test tube is provided with a liquid level adjusting tube, the top end of the test tube is provided with an air pressure balancing tube to ensure that the internal air pressure and the external air pressure are equal, the liquid supplementing tube is connected with a liquid supplementing bottle through a liquid supplementing tube valve, wherein the liquid supplementing bottle, the liquid supplementing pipe and the liquid supplementing pipe valve form a test liquid supplementing or overflowing collecting loop, the liquid level adjusting pipe is connected with the test pipeline, the flow state adjusting cabin is connected with the static level tester through the level test pipe, the inside of the test pipe is provided with mm-level scales, the inner diameter of the test pipe is the same as or proportionally combined with the outer diameter of the test piston, the feeding speed is converted into flow, then the flow is transmitted to the test pipe through the test pipeline and then converted into the rising and falling speeds of the liquid column, namely the feeding or the withdrawing speed, the test tube is filled with the test liquid before the test and is in a full-scale state.

The static leveling instrument comprises a static leveling instrument, an exhaust hole and an air pipe are arranged on the static leveling instrument, a testing cable connected with a computer is arranged on one side of the static leveling instrument, and the bottom of the static leveling instrument is fixed with the base through a base fixing frame.

Has the advantages that:

the device realizes the function of real-time automatic monitoring by installing the static level tester, and realizes real-time data detection and recording by matching with a computer interface; compared with electronic equipment, the equipment adopts a hydraulic loop, is not influenced by underground electromagnetic interference, meets the explosion-proof requirement of the underground equipment by intrinsic safety, and overcomes the defect that a sensor for monitoring line displacement is influenced by axial vibration of a drill rod; the existing feeding speed monitoring scheme is carried out at an orifice, the construction space of drilling is extruded, a monitoring synchronous hydraulic cylinder is additionally arranged on a drilling machine feeding device, feeding and withdrawing signals are transmitted to the wide position outside a drilling pit through a hydraulic loop, the monitoring at the position far away from the orifice is realized, the nervous construction space at the orifice is saved, and the monitoring safety is improved.

Drawings

FIG. 1 is a schematic structural diagram of a feeding speed conversion monitoring device of a roadway all-hydraulic drill;

FIG. 2 is a schematic structural diagram of a connecting piece of the full hydraulic tunnel drilling machine feeding speed conversion monitoring device;

FIG. 3 is a schematic structural diagram of a hydraulic cylinder structure of the feeding speed conversion monitoring device of the roadway full hydraulic drill;

FIG. 4 is a schematic structural diagram of a conversion cylinder of the feeding speed conversion monitoring device of the roadway full hydraulic drill;

FIG. 5 is a schematic structural diagram of a conversion cylinder bracket of the feeding speed conversion monitoring device of the full hydraulic tunnel drilling machine;

FIG. 6 is a structural entity diagram of a detector of the full hydraulic tunnel drilling machine feeding speed conversion monitoring device;

in the figure: 1-test pipeline, 2-conversion cylinder, 3-feeding hydraulic cylinder, 4-conversion cylinder bracket, 5-connecting piece, 6-liquid supplement bottle, 7-tester, 8-liquid supplement pipe, 9-base, 10-leveling test pipe, 11-static leveling tester, 12-hydraulic push rod, 13-connecting piece fixing groove A, 14-test piston, 15-connecting piece fixing groove B, 16-connecting piece fixing nut, 17-feeding oil way, 18-rodless cavity, 19-piston, 20-rod cavity, 21-bit-withdrawing oil way, 22-conversion cylinder fixing end, 23-test liquid cavity, 24-sealing ring, 25-mud-water isolating cover, 26-conversion cylinder body, 27-fixing thread and 28-fixing nut, 29-sliding groove, 30-fixed screw hole, 31-liquid level adjusting pipe, 32-testing pipe, 33-flow state adjusting cabin, 34-air pipe, 35-air vent, 36-static level gauge, 37-testing cable, 38-base fixing frame, 39-liquid supplementing pipe valve and 40-air pressure balancing pipe.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, the feeding speed conversion monitoring device of the full hydraulic tunnel drilling machine of the utility model comprises a conversion cylinder 2 and a monitoring device, wherein the conversion cylinder 2 and the monitoring device are connected with each other through a test pipeline 1, the test pipeline 1 is a stainless steel thin pipe, the outer side of the test pipeline is wrapped by rubber, and the inner diameter range of the test pipeline is 2-5 mm; as shown in fig. 2, the other end of the conversion cylinder 2 is connected with the tail end of the feeding hydraulic cylinder 3 to be detected through a connecting piece 5; the feeding hydraulic cylinder 3 comprises a piston cylinder and a piston 19 arranged in the piston cylinder, the piston 19 divides the space in the piston cylinder into a rodless cavity 18 and a rod cavity 20, the rodless cavity 18 is connected with a feeding oil way 17, the rod cavity 20 is connected with a drill withdrawal oil way 21, the piston 19 is provided with a hydraulic push rod 12, the tail end of the hydraulic push rod 12 is provided with a connecting piece fixing groove A13, and the pushing speed of the hydraulic push rod 12 is the feeding speed of the drilling machine when in use; the connecting piece fixing groove B15 of the conversion cylinder 2 and the connecting piece fixing groove A13 of the feeding hydraulic cylinder 3 are connected with each other through the connecting piece 5, so that the conversion cylinder 2 and the feeding hydraulic cylinder 3 are linked, wherein the feeding hydraulic cylinder fixing end 16 is arranged at the connecting piece fixing groove A13.

As shown in fig. 3, the conversion cylinder 2 includes a conversion cylinder body 26, a conversion cylinder fixing end 22 is arranged at the front end of the conversion cylinder body 26, a mud-water isolating cover 25 is arranged at the outer side of the conversion cylinder body 26, a test piston 14 is arranged at the inner side of the conversion cylinder body 26, the mud-water isolating cover 25 is arranged opposite to the opening of the conversion cylinder body 26, an opening matched with the test piston 14 is arranged at the tail end of the mud-water isolating cover 25, a fixing nut 28 is arranged on the opening, a fixing thread 27 matched with the fixing nut 28 is arranged in the rear end of the test piston 14, a connecting piece fixing groove B15 is arranged at the tail end of the test piston 14, a sealing ring 24 is arranged at the head of the test piston 14, a test liquid cavity 23 is arranged between the head of the; as shown in figure 5, the conversion cylinder 2 is fixed on a feeding guide rail of a drilling machine through a conversion cylinder bracket 4, the angle and the position are adjustable and are parallel to the feeding direction, the conversion cylinder bracket 4 comprises a sliding groove 29, the bottom of the sliding groove 29 is provided with a fixing screw hole 30, and the conversion cylinder bracket 4 fixes the conversion cylinder 2 on the feeding guide rail of the drilling machine through the sliding groove 29 and the fixing screw hole 30. The mud-water isolation cover 25 is a circular shell made of corrosion-resistant and wear-resistant steel, is consistent in length with the conversion cylinder 2, and is fixed on the test piston 14 through a fixing thread 27 and a fixing nut 28 with adjustable positions and moves synchronously, so that the test piston 14 is protected. The conversion cylinder 2 is placed on a sliding groove 29 of the conversion cylinder bracket 4, a conversion cylinder body 26 is fixed on a drilling machine feeding guide rail through a conversion cylinder fixing end 22, and the test piston 14 drives the mud isolation cover 25 to slide on the sliding groove 29 together.

As shown in fig. 4, the monitoring device comprises a liquid supplement bottle 6, a tester 7, a base 9 and a static leveling tester 11, wherein the tester 7 and the static leveling tester 11 are fixed on the base 9, the upper part of the side wall of the tester 7 is connected with the liquid supplement bottle 6 through a liquid supplement pipe 8, the lower part of the side wall is connected with a conversion cylinder 2 through a test pipeline 1, the bottom of the tester 7 is provided with a flow state adjusting cabin 33 of an expansion cavity, and the flow state adjusting cabin 33 is connected with the static leveling tester 11 through a leveling test pipe 10.

As shown in fig. 6, the tester 7 includes a testing tube 32 and a flow state adjusting chamber 33 disposed at the bottom of the testing tube 32, the testing tube 32 is fixed to the flow state adjusting chamber 33 of the enlarged cavity structure through a screw thread, a fluid supplementing tube 8 is disposed above the testing tube 32, a fluid level adjusting tube 31 is disposed below the testing tube, and an air pressure balancing tube 40 is disposed at the top end of the testing tube to ensure equal internal and external air pressures, the fluid supplementing tube 8 is connected to the fluid supplementing bottle 6 through a fluid supplementing tube valve 39, and the flow state adjusting chamber 33 of the enlarged cavity is disposed at the bottom of the tester 7 to keep the level of the testing fluid in the tester 7 to rise or fall smoothly. The flow state adjusting cabin 33 is connected with the static level tester 11 through the level testing pipe 10, the liquid supplementing bottle 6, the liquid supplementing pipe 8 and the liquid supplementing pipe valve 39 form a testing liquid supplementing or overflowing collecting loop, the liquid level adjusting pipe 31 is connected with the testing pipeline 1, the flow state adjusting cabin 33 is connected with the static level tester 11 through the level testing pipe 10, mm-level scales are arranged in the testing pipe 32, the inner diameter of the testing pipe 32 and the outer diameter of the testing piston 14 are combined in the same diameter or in proportion, the feeding speed is converted into flow, then the flow is transmitted to the testing pipe 32 through the testing pipeline 1 and converted into liquid column ascending and descending speeds, namely the feeding or the drill withdrawing speed, and the testing pipe 32 is filled with testing liquid before testing and is in a full-range state. The static leveling instrument 11 comprises a static leveling instrument 36, an exhaust hole 35 and an air pipe 34 are arranged on the static leveling instrument 36, a testing cable 37 connected with a computer is arranged on one side of the static leveling instrument 36, and the bottom of the static leveling instrument 11 is fixed with the base 9 through a base fixing frame 38.

The working process is as follows: before use, the valve 39 of the liquid supplementing pipe is opened to supplement liquid, so that the test tube 32 is filled with the test liquid in a full-scale state. When the drilling machine works, the hydraulic push rod 12 drives the testing piston 14 to move synchronously, a testing liquid cavity 23 is arranged between the head of the testing piston 14 and the cylinder body 26 of the conversion cylinder, and the top end of the testing liquid cavity 23 is connected with the testing pipeline 1. The inner diameter of the test tube 32 is the same as or proportionally combined with the outer diameter of the test piston 14, and the feeding speed is converted into flow, then the flow is transmitted to the test tube 32 through the test pipeline 1 and converted into liquid column descending and ascending speeds corresponding to the feeding or retreating speed of the drilling machine. If the inner diameter of the test pipe is D and the outer diameter of the test piston is D, the feeding speed of the drilling machine is equal to the liquid column descending speed D²/d². The test tube 32 is provided with mm-level scales, the feeding or the back-drilling speed can be manually read for rough monitoring, the detection device is internally provided with a static leveling tester 11 for monitoring the height difference change of the liquid level, a test cable 37 connected with the detection device is arranged, the static leveling tester 36 is a precise instrument for measuring the height difference and the change of the height difference, single-machine-version acquisition software is arranged in the detection device to realize automatic data acquisition, and the data is transmitted to background software through the test cable 37, so that the automatic observation of the feeding or the back-drilling speed is realized.

Claims

1. The utility model provides a full-hydraulic rig in tunnel speed conversion monitoring devices that feeds which characterized in that: the device comprises a conversion cylinder (2) and a monitoring device, wherein the conversion cylinder (2) is connected with the monitoring device through a test pipeline (1), and the other end of the conversion cylinder (2) is connected with the tail end of a feeding hydraulic cylinder (3) to be detected through a connecting piece (5);

the feeding hydraulic cylinder (3) comprises a piston cylinder and a piston (19) arranged in the piston cylinder, the piston (19) divides the space in the piston cylinder into a rodless cavity (18) and a rod cavity (20), the rodless cavity (18) is connected with a feeding oil way (17), the rod cavity (20) is connected with a drill withdrawal oil way (21), a hydraulic push rod (12) is arranged on the piston (19), and the tail end of the hydraulic push rod (12) is provided with a connecting piece fixing groove A (13);

the conversion cylinder (2) comprises a conversion cylinder body (26), a conversion cylinder fixing end (22) is arranged at the front end of the conversion cylinder body (26), a mud-water isolation cover (25) is arranged on the outer side of the conversion cylinder body (26), the testing piston (14) is arranged on the inner side, the muddy water isolation cover (25) is arranged opposite to an opening of the conversion cylinder body (26), an opening matched with the testing piston (14) is formed in the tail end of the muddy water isolation cover (25), a fixing nut (28) is arranged on the opening, a fixing thread (27) matched with the fixing nut (28) is arranged in the rear end of the testing piston (14), a connecting piece fixing groove B (15) is formed in the tail end of the testing piston (14), a sealing ring (24) is arranged at the head of the testing piston (14), a testing liquid cavity (23) is arranged between the head of the testing piston (14) and the conversion cylinder body (26), and the front end of the testing liquid cavity (23) is connected with the testing pipeline (1);

monitoring devices includes fluid infusion bottle (6), tester (7), base (9) and hydrostatic level tester (11), wherein tester (7) and hydrostatic level tester (11) are fixed on base (9), tester (7) lateral wall top is connected with fluid infusion bottle (6) through fluid infusion pipe (8), the lateral wall below is connected with conversion jar (2) through test pipeline (1), tester (7) bottom is equipped with flow state regulation cabin (33) of enlarged chamber, flow state regulation cabin (33) are connected with hydrostatic level tester (11) through level test pipe (10).

2. The feed speed conversion monitoring device of the full hydraulic tunnel drilling machine according to claim 1, characterized in that: the connecting piece fixing groove B (15) of the conversion cylinder (2) and the connecting piece fixing groove A (13) of the feeding hydraulic cylinder (3) are connected with each other through the connecting piece (5), so that the conversion cylinder (2) and the feeding hydraulic cylinder (3) are linked, and a feeding hydraulic cylinder fixing end (16) is arranged at the position of the connecting piece fixing groove A (13).

3. The feed speed conversion monitoring device of the full hydraulic tunnel drilling machine according to claim 1, characterized in that: the test pipeline (1) is a stainless steel thin pipe, the outer side of the test pipeline is wrapped by rubber, and the inner diameter range of the test pipeline is 2-5 mm.

4. The feed speed conversion monitoring device of the full hydraulic tunnel drilling machine according to claim 1, characterized in that: the conversion cylinder (2) is fixed on a feeding guide rail of the drilling machine through a conversion cylinder bracket (4), the angle and the position of the conversion cylinder bracket are adjustable and parallel to the feeding direction, the conversion cylinder bracket (4) comprises a sliding groove (29), a fixing screw hole (30) is formed in the bottom of the sliding groove (29), and the conversion cylinder (2) is fixed on the feeding guide rail of the drilling machine through the sliding groove (29) and the fixing screw hole (30) by the conversion cylinder bracket (4).

5. The feed speed conversion monitoring device of the full hydraulic tunnel drilling machine according to claim 1, characterized in that: the mud-water isolation cover (25) is formed by a corrosion-resistant and wear-resistant steel annular shell, is consistent with the conversion cylinder (2) in length, and is fixed on the test piston (14) through a fixing thread (27) and a fixing nut (28) with adjustable positions and moves synchronously, so that the test piston (14) is protected.

6. The feed speed conversion monitoring device of the full hydraulic tunnel drilling machine according to claim 1, characterized in that: the tester (7) comprises a test tube (32) and a flow state adjusting cabin (33) arranged at the bottom of the test tube (32), the test tube (32) is fixed with the flow state adjusting cabin (33) of the enlarged cavity structure through a thread, a liquid supplementing tube (8) is arranged above the test tube (32), a liquid level adjusting tube (31) is arranged below the test tube, an air pressure balancing tube (40) is arranged at the top end to ensure equal internal and external air pressures, the liquid supplementing tube (8) is connected with a liquid supplementing bottle (6) through a liquid supplementing tube valve (39), wherein the liquid supplementing bottle (6), the liquid supplementing tube (8) and the liquid supplementing tube valve (39) form a test liquid supplementing or overflowing collecting loop, the liquid level adjusting tube (31) is connected with a test pipeline (1), the flow state adjusting cabin (33) is connected with a static level tester (11) through a level test tube (10), mm-level scales are arranged in the test tube (32), the inner diameter of the test tube (32) is the same as or combined with the outer diameter of the test piston, the feeding speed is converted into flow, then the flow is transmitted to the testing pipe (32) through the testing pipeline (1) and then converted into the rising and falling speeds of the liquid column, namely the feeding or withdrawing speed, and the testing pipe (32) is filled with testing liquid before testing and is in a full-scale state.

7. The feed speed conversion monitoring device of the full hydraulic tunnel drilling machine according to claim 1, characterized in that: static level tester (11) are equipped with exhaust hole (35) and trachea (34) including static level (36) on static level (36), and one side is equipped with test cable (37) of being connected with the computer, and static level tester (11) bottom is fixed with base (9) through base mount (38).