Blast hole depth measuring device

Abstract

The utility model discloses a blast hole depth measuring device which comprises a movable base, the top of the movable base is provided with a winch and a storage battery, and the storage battery is used for supplying power to the winch; a pay-off hole is formed in the top of the movable base, a fixed arm is fixedly arranged at the bottom of the movable base, and a guide sleeve coaxial with the pay-off hole is arranged at the tail end of the fixed arm; the tail end of a rope of the winch penetrates through the pay-off hole and the guide sleeve to be connected with a measuring assembly, the measuring assembly is used for conducting traction guiding in the rope lowering process, meanwhile, when the measuring assembly reaches the bottom of the hole, the measuring assembly and the hole wall interact and are fixed to provide traction force for rope tightening, and the measuring precision is guaranteed; a compensation assembly is further arranged at the bottom of the measuring assembly and used for conducting compensation measurement on the gap between the measuring assembly and the hole bottom.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of blasting technology, concretely relates to a blasting hole depth measuring device. BACKGROUND

[0002] Blasting work is very important for the mine, before blasting, many blasting holes need to be drilled on the blasting working face, and the blasting holes are filled with explosives, and then the blasting is carried out, in order to ensure the blasting quality, the depth of each blasting hole needs to be measured before the explosives are filled, so as to avoid the influence of the hole depth not meeting the set standard on the blasting quality.

[0003] The existing hole depth measuring device measures the deep hole, in order to ensure the measuring efficiency, soft measurement is usually used, that is, the hole depth is measured through the traction and the rope, but when the existing device uses soft measurement, the distance between the traction and the hole bottom is not easy to control, for example, when the traction touches the bottom, the rope is in a slack state, or the traction does not touch the bottom and there is a gap between the traction and the hole bottom, which leads to low accuracy of the measurement result.

[0004] Therefore, it is necessary to provide a blasting hole depth measuring device to solve the problems mentioned in the background. UTILITY MODEL CONTENT

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme: a blasting hole depth measuring device, comprising: a mobile base, the top of the mobile base is provided with a winch and a storage battery, the storage battery is used for supplying power to the winch; the top of the mobile base is provided with a pay-off hole, the bottom of the mobile base is fixedly provided with a fixed arm, the fixed arm is coaxially provided with a guide sleeve at the end of the fixed arm and the pay-off hole;

[0006] The end of the rope of the winch passes through the pay-off hole and the guide sleeve and is connected with a measuring assembly, the measuring assembly is used for guiding during the lowering of the rope, and when the measuring assembly reaches the hole bottom, the measuring assembly interacts with the hole wall to provide a tensioning force for the rope, so as to ensure the measurement accuracy;

[0007] The bottom of the measuring assembly is also provided with a compensation assembly for compensating the gap between the measuring assembly and the hole bottom.

[0008] Preferably, the measuring assembly comprises: a support cylinder, a servo motor is installed at the top of the support cylinder, a bidirectional screw rod is coaxially installed downward at the output end of the servo motor, and a moving seat is symmetrically connected with the both sides of the shaft body of the bidirectional screw rod through threads;

[0009] The distal end of the bidirectional screw rod away from the servo motor is connected with the inner wall of the support cylinder through a limiting bearing, and the compensation assembly is arranged at the bottom of the bidirectional screw rod;

[0010] A plurality of limiting long grooves are uniformly and circumferentially arranged on the cylinder body of the support cylinder along the extending direction thereof, a plurality of support tiles are arranged on the outer side of the support cylinder and correspond to the limiting long grooves, one end of each of the connecting rods is hingedly connected to the circumferential side of each of the moving seats and correspond to the limiting long grooves, the other end of the upper connecting rod is hingedly connected to the upper inner side of the support tile, and the other end of the lower connecting rod is hingedly connected to the lower inner side of the support tile.

[0011] When each of the moving seats is driven by the bidirectional screw rod to approach each other, the support radius of each of the support tiles gradually decreases.

[0012] Preferably, the upper and lower parts of the support tile are provided with arc-shaped guide structures.

[0013] Preferably, the top end of the support cylinder is detachably provided with an auxiliary power supply, and the top of the auxiliary power supply is connected with the rope.

[0014] Preferably, the compensation assembly comprises an electric telescopic rod installed at the bottom end of the bidirectional screw rod, and the bottom end of the electric telescopic rod is provided with a measuring shell, and the straight outer diameter of the measuring shell is the same as that of the support cylinder.

[0015] Preferably, the middle part of the bidirectional screw rod is provided with a limiting disc.

[0016] Preferably, a pressure sensor is arranged at the electric telescopic rod or the measuring shell.

[0017] Preferably, a length mark is arranged on the rope.

[0018] Compared with the prior art, the present application provides a blasting hole depth measuring device, which has the following advantages

[0019] Beneficial effects:

[0020] In the present application, the measuring assembly and the compensation assembly installed at the lower end thereof are arranged, the measuring assembly interacts with the hole wall and is fixed, provides a traction force for the winding of the winch, makes the rope in a straightened state, reduces the measurement error, and measures the gap between the measuring assembly and the hole bottom through the compensation assembly, further reduces the measurement error, and improves the measurement accuracy of the measuring device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a whole structure schematic view of a blasting hole depth measuring device;

[0022] Fig. 2 It is a sectional structure schematic view of a measuring assembly of a blasting hole depth measuring device;

[0023] Fig. 3 It is a three-dimensional structure schematic view of a measuring assembly of a blasting hole depth measuring device;

[0024] In the figure: 1, mobile base; 2, winch; 3, battery; 4, fixed arm; 5, guide sleeve; 6, measuring assembly; 7, support cylinder; 8, servo motor; 9, bidirectional screw; 10, moving seat; 11, limit long slot; 12, support tile; 13, connecting rod; 14, limit bearing; 15, limit disc; 16, electric telescopic rod; 17, measuring shell; 18, auxiliary power supply. DETAILED DESCRIPTION

[0025] Please refer to Figs. 1-3 The utility model provides a blast hole depth measuring device, include: mobile base 1, the top of mobile base 1 is provided with winch 2 and battery 3, the battery 3 is used to power supply winch 2, the top of mobile base 1 is opened and has the wire hole, the bottom of mobile base 1 is fixed with fixed arm 4, and the fixed arm 4 end is coaxial with wire hole and is provided with guide sleeve 5,

[0026] The rope end of winch 2 is connected with measuring assembly 6 through wire hole and guide sleeve 5, and measuring assembly 6 is used to guide in the process of rope lowering, and when measuring assembly 6 reaches the hole bottom, it is interacted with the hole wall to provide traction for the taut rope, and the measuring accuracy is guaranteed.

[0027] The bottom of measuring assembly 6 is also provided with a compensation assembly for compensating the gap between measuring assembly 6 and the hole bottom.

[0028] It needs to be explained that when measuring the blast hole depth, first, the mobile base 1 is moved above the blast hole to be measured, and the measuring assembly 6 is placed in the blast hole to be measured, then the mobile base 1 is leveled to make the rope coaxial with the blast hole, then the winch 2 is controlled to move the measuring assembly 6 to the hole bottom, when the measuring assembly 6 touches the bottom, the rope is in a relaxed state, then the measuring assembly 6 is controlled to interact with the hole wall, and the winch 2 is controlled to slowly wind, the rope is in a straight state under the traction of the measuring assembly 6, the winding is stopped, and the gap between the measuring assembly 6 and the hole bottom is compensated by the compensation assembly, avoiding the influence of the relaxed rope or the gap between the measuring assembly 6 and the hole bottom on the detection accuracy during measurement.

[0029] Further, the measuring assembly 6 includes: a support cylinder 7, a servo motor 8 is installed at the top of the support cylinder 7, a bidirectional screw 9 is coaxially installed at the output end of the servo motor 8 downward, and moving seats 10 are symmetrically connected on both sides of the shaft body of the bidirectional screw 9 through limit bearings 14.

[0030] The end of the bidirectional screw 9 away from the servo motor 8 is connected with the inner wall of the support cylinder 7 through limit bearings 14, and the compensation assembly is arranged at the bottom of the bidirectional screw 9.

[0031] A plurality of limiting long grooves 11 are evenly arranged on the cylinder body of the supporting cylinder 7 in the circumferential direction along the extending direction thereof, a plurality of supporting tiles 12 are arranged on the outer side of the supporting cylinder 7 corresponding to the limiting long grooves 11, one end of each of the connecting rods 13 is hingedly connected to the circumferential side of each of the moving seats 10 corresponding to the limiting long grooves 11, the other end of the upper connecting rod 13 is hingedly connected to the inner upper portion of the supporting tile 12, and the other end of the lower connecting rod 13 is hingedly connected to the inner lower portion of the supporting tile 12.

[0032] When each of the moving seats 10 is driven by the bidirectional screw rod 9 to move towards each other, the supporting radius of each of the supporting tiles 12 gradually decreases.

[0033] It should be explained that in the initial state, the two moving seats 10 are located at the middle portion of the bidirectional screw rod 9 and have the shortest distance. That is, the supporting radius of the supporting tile 12 is the smallest at this time, which facilitates the lowering of the measuring assembly 6 into the blasting hole. When the measuring assembly 6 reaches the bottom of the hole, the bidirectional screw rod 9 is driven by the servo motor 8 to rotate and control the two moving seats 10 to move away from each other. Under the interaction of the limiting long grooves 11 and the connecting rods 13, each of the supporting tiles 12 is expanded outward and fixed in the blasting hole, thereby providing a traction force for the winch 2 to wind the rope, making the rope straight, and improving the accuracy of detection.

[0034] Preferably, a pressure sensing unit is embedded in the outer wall of the supporting tile 12, which facilitates the monitoring and control of the tensioning force of the supporting tile 12.

[0035] Further, the upper and lower portions of the supporting tile 12 are provided with arc-shaped guide structures for guiding during the lowering or raising of the measuring assembly 6, thereby avoiding being stuck.

[0036] Further, an auxiliary power supply 18 is detachably installed at the top end of the supporting cylinder 7, the top of the auxiliary power supply 18 is connected to the rope, and the auxiliary power supply 18 is connected to the servo motor 8 and the compensation assembly, respectively, for supplying power to the servo motor 8 and the compensation assembly.

[0037] Further, the compensation assembly comprises an electric telescopic rod 16 installed at the bottom end of the bidirectional screw rod 9, and a measuring shell 17 is arranged at the bottom end of the electric telescopic rod 16, the straight outer diameter of the measuring shell 17 is the same as that of the supporting cylinder 7, and the auxiliary power supply 18 is connected to the electric telescopic rod 16 for supplying power to the electric telescopic rod 16.

[0038] It should be explained that after the measuring assembly 6 is fixed, the electric telescopic rod 16 is extended to drive the measuring shell 17 to move downward and contact the bottom of the hole, and the gap between the measuring assembly 6 and the bottom of the hole is measured by judging the extension length of the electric telescopic rod 16, thereby improving the measurement accuracy.

[0039] Further, a limiting disc 15 is fixedly sleeved at the middle portion of the bidirectional screw rod 9.

[0040] Further, the electric telescopic rod 16 or the measuring shell 17 is provided with a pressure sensor, facilitating the control of the extension of the electric telescopic rod 16.

[0041] Specifically, the compensation assembly further comprises a processing unit (such as a processor) and a display unit (a display) and / or a warning unit (a buzzer), and the pressure sensor, the display unit and the warning unit, the electric telescopic rod 16 are respectively wirelessly connected with the processing unit. When the measuring shell 17 is lowered to contact the hole bottom, the pressure sensor monitors the pressure change, and then transmits the monitored pressure value to the processing unit. The processing unit compares the pressure value with the set pressure value to determine whether the measuring shell 17 touches the bottom, and then controls the display unit to display the result of touching the bottom and / or the warning unit to warn the touching state, so that the staff can clearly know whether the compensation assembly touches the bottom.

[0042] Further, the rope is provided with a length mark, facilitating the rapid identification of the measurement result.

[0043] In specific implementation, first, the mobile base is moved above the to-be-measured blast hole, and the measuring assembly is placed in the to-be-measured blast hole, then the mobile base is leveled, so that the rope is coaxial with the blast hole; then the winch is controlled to move the measuring assembly to the hole bottom, when the measuring assembly touches the bottom, the rope is in a relaxed state, then the measuring assembly is controlled to interact with the hole wall to be fixed, and the winch is controlled to be slowly wound, under the traction of the measuring assembly, the rope is in a straightened state, the winding is stopped, and the gap between the measuring assembly and the hole bottom is measured by the compensation assembly, avoiding the influence of the relaxed state of the rope or the gap between the measuring assembly and the hole bottom on the detection accuracy during the measurement.

[0044] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for measuring the depth of blasting holes, characterized in that, include: A mobile base (1) is provided with a winch (2) and a battery (3) on its top. The battery (3) is used to supply power to the winch (2). A wire feeding hole is provided on the top of the mobile base (1). A fixed arm (4) is fixed on the bottom of the mobile base (1). A guide sleeve (5) is provided at the end of the fixed arm (4) and coaxially with the wire feeding hole. The end of the rope of the winch (2) passes through the wire release hole and the guide sleeve (5) and is connected to a measuring component (6). The measuring component (6) is used to guide the rope during the lowering process. At the same time, when the measuring component (6) reaches the bottom of the hole, it interacts with the hole wall to fix it and provide traction force to tighten the rope, thus ensuring measurement accuracy. The bottom of the measuring component (6) is also provided with a compensation component for compensating the gap between the measuring component (6) and the bottom of the hole.

2. The blasting hole depth measuring device according to claim 1, characterized in that, The measuring component (6) includes: a support cylinder (7), a servo motor (8) is installed at the top inside the support cylinder (7), a bidirectional lead screw (9) is coaxially mounted downward at the output end of the servo motor (8), and a movable seat (10) is symmetrically threaded on both sides of the shaft of the bidirectional lead screw (9). The peripheral side of the bidirectional lead screw (9) away from the servo motor (8) is connected to the inner wall of the support cylinder (7) by a limiting bearing (14), and the compensation component is provided at the bottom of the bidirectional lead screw (9). The support cylinder (7) has several limiting grooves (11) evenly distributed around its extension direction. The outer side of the support cylinder (7) is provided with several supporting tiles (12) corresponding to the limiting grooves (11). Each movable seat (10) is hinged to one end of a connecting rod (13) around its periphery and to the limiting groove (11). The other end of the upper connecting rod (13) is hinged to the upper inner side of the supporting tile (12), and the other end of the lower connecting rod (13) is hinged to the lower inner side of the supporting tile (12). When each of the movable seats (10) approaches each other under the drive of the bidirectional lead screw (9), the support radius of each of the support tiles (12) gradually decreases.

3. The blasting hole depth measuring device according to claim 2, characterized in that, The upper and lower parts of the support tile (12) are provided with arc-shaped guide structures.

4. The blasting hole depth measuring device according to claim 2, characterized in that, An auxiliary power supply (18) is detachably installed at the top of the support cylinder (7), and the top of the auxiliary power supply (18) is connected to the rope.

5. The blasting hole depth measuring device according to claim 2, characterized in that, The compensation component includes an electric telescopic rod (16) installed at the bottom of the bidirectional lead screw (9), and a measuring shell (17) at the bottom of the electric telescopic rod (16), the measuring shell (17) having the same outer diameter as the support cylinder (7).

6. The blasting hole depth measuring device according to claim 2, characterized in that, The bidirectional lead screw (9) is fixedly fitted with a limiting plate (15) in the middle.

7. The blasting hole depth measuring device according to claim 5, characterized in that, A pressure sensor is provided at the electric telescopic rod (16) or the measuring shell (17).

8. The blasting hole depth measuring device according to claim 1, characterized in that, The rope has a length marker.

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