Blasting shot hole measuring device

Abstract

The utility model provides a blasting blasthole measuring device which comprises a protractor and measuring rulers, two fixing plates are symmetrically and fixedly arranged at the two ends of the protractor, a positioning insertion rod is in threaded connection with the interior of each fixing plate, a bubble level is fixedly arranged on the lower portion of the front side face of the protractor, the measuring rulers are composed of a first measuring ruler and a second measuring ruler, and the first measuring ruler and the second measuring ruler are arranged on the protractor. A rotating shaft is rotatably arranged at the axis of the protractor, the rear end of the rotating shaft is connected with the top end of the first measuring scale, a pointer matched with the angle in the protractor is fixedly arranged at the front end of the rotating shaft, the second measuring scale is movably arranged in the first measuring scale, and a driving gear is rotatably arranged in the right side of the first measuring scale; one end of the driving gear rotationally penetrates through the outer side of the first measuring scale and is connected with a driving handle, and the right side edge of the second measuring scale is provided with a rack meshed with the driving gear. The device has the advantages of being accurate and convenient in measurement, convenient to carry and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to mining blasting technical field especially relates to a kind of blasting hole measuring device. BACKGROUND

[0002] In mining industry, blasting is a conventional technical means, before blasting, drilling is needed according to the blasting demand, since the demand of blasting is different, the depth and angle of drilling are also different, in order to ensure the blasting effect, the blast hole needs to be measured.

[0003] Patent network discloses a kind of measuring device of blasting hole (announcement number: CN 216385437 U), including: fixed platform, protractor, rotary connecting piece, guide rod and meter ruler, the guide rod is embedded in the rotary connecting piece, the guide rod moves along the rotary connecting piece, and the guide rod is rotated along the protractor by the rotary connecting piece, the meter ruler includes meter ruler box and the meter ruler body in the meter ruler box, the meter ruler body is stretched and moved by the guide rod.The measuring device of the blasting hole of the utility model can measure the depth of the blasting hole by the guide rod driving meter ruler stretching, and the inclination of the blasting hole can be measured by the guide rod driving rotary connecting piece rotation, simple operation, convenient to use, therefore, the utility model structure is simple, low in cost, the depth and inclination of blasting hole can be quickly measured, and practicality is strong.

[0004] The above-mentioned technology has the following defects in use, 1, the protractor does not have horizontal detection component, it is not easy to make the protractor be in horizontal state, thereby when angle measurement is carried out, deviation will appear, affect blasting effect, or practical external device level meter is measured and adjusted, reduce work efficiency.2, meter ruler is not convenient to contract and fold, thereby not convenient to measure blast hole of different depth, and inconvenient to carry, bring inconvenience to work.Therefore, there is room for improvement. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of blasting hole measuring device to solve the problem proposed in background art.

[0006] In order to solve the above problems, the utility provides a blasting hole measuring device, including protractor, measuring scale, both ends of the protractor are symmetrically fixed with two fixed plates, and each fixed plate is threadedly connected with a positioning plug rod, the lower part of the front side of the protractor is fixedly provided with a bubble level, the measuring scale is composed of a first measuring scale and a second measuring scale, the shaft center of the protractor is rotatably provided with a rotating shaft, the rear end of the rotating shaft is connected with the top end of the first measuring scale, the front end of the rotating shaft is fixedly provided with a pointer matched with the angle in the protractor, the second measuring scale is movably arranged in the first measuring scale, a driving gear is rotatably arranged in the right side of the first measuring scale, one end of the driving gear is rotatably arranged outside the first measuring scale and connected with a driving handle, and the right side of the second measuring scale is provided with a rack engaged with the driving gear.

[0007] Preferably, the fixed plates on both sides of the protractor are threadedly connected with a horizontal adjusting rod outside the positioning plug rod.

[0008] Preferably, the left side of the front side of the first measuring scale is provided with a first scale line, and the right side is provided with a second scale line, and the front side of the second measuring scale is provided with a third scale line corresponding to the first scale line.

[0009] Preferably, the rear side of the second measuring scale is symmetrically provided with two arc-shaped sliding strips, and the inside of the first measuring scale is provided with two sliding grooves slidably connected with the arc-shaped sliding strips.

[0010] The beneficial effects of the above technical scheme are:

[0011] 1. The second measuring scale is movably arranged in the first measuring scale, so that the measuring depth can be adjusted, thereby facilitating the measurement of holes of various depths, and facilitating carrying after folding.

[0012] 2. The first measuring scale is rotatably connected with the shaft center of the protractor, thereby facilitating the measurement of the angle of the hole.

[0013] 3. The positioning plug rod in the fixed plate facilitates the fixation of the protractor above the hole, the height of the protractor is adjusted by the horizontal adjusting rod, and the protractor is quickly adjusted to a horizontal state by cooperating with the bubble level in the protractor, thereby ensuring the accuracy of the measured angle and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a three-dimensional structure schematic diagram of the utility model.

[0015] Fig. 2 It is a side view structure schematic diagram of the utility model.

[0016] Fig. 3The utility model discloses a first measuring scale and second measuring scale connecting place's sectional view structural drawing. Among them: 1 - protractor;11 - bubble level;2 - measuring scale;21 - first measuring scale;211 - sliding slot;22 - second measuring scale;23 - rack;221 - arc slide;24 - first scale line;25 - second scale line;26 - third scale line;3 - fixed plate;31 - positioning plug rod;32 - horizontal adjusting rod;4 - pivot;41 - pointer;5 - driving gear;51 - driving handle. DETAILED DESCRIPTION

[0017] The embodiment of the utility model will be described below in detail in combination with the drawings.

[0018] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of " is two or more than two;The terms "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and can not be understood as indicating or implying relative importance.

[0019] In the description of the utility model, it is necessary to explain that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, can be detachably connected, movably connected or integrally connected;It can be mechanical connection, can be electrical connection;It can be directly connected, can be indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0020] As Figs. 1-3In the embodiment, a blasting hole measuring device comprises a protractor 1, a measuring scale 2, two fixed plates 3 symmetrically fixed at both ends of the protractor 1, a positioning plug 31 threadedly connected in each fixed plate 3, a bubble level 11 fixed at the lower part of the front side of the protractor 1, the measuring scale 2 composed of a first measuring scale 21 and a second measuring scale 22, a rotating shaft 4 rotatably arranged at the center of the protractor 1, the rear end of the rotating shaft 4 connected with the top end of the first measuring scale 21, a pointer 41 fixed at the front end of the rotating shaft 4 and matched with the protractor 1, the second measuring scale 22 movably arranged in the first measuring scale 21, a driving gear 5 rotatably arranged at the right side of the first measuring scale 21, the driving gear 5 rotatably arranged at one end of the first measuring scale 21 and connected with a driving handle 51 arranged outside the first measuring scale 21, and a rack 23 arranged at the right side of the second measuring scale 22 and engaged with the driving gear 5.

[0021] Through the above technical scheme, when in use, the measuring scale 2 is inserted into the hole to be detected, then the protractor 1 is adjusted to be horizontal by observing the bubble level 11, then the protractor 2 is positioned by adjusting the positioning plug 31 matched with the fixed plate 3, at this time, the driving handle 51 drives the driving gear 5 to rotate, thereby driving the engaged rack 23 to move the second measuring scale 22 in the first measuring scale 21, thereby adjusting the measuring length, so as to facilitate the measurement of holes with different depths, and meanwhile, after the measuring scale 2 is inserted into the hole, the first measuring scale 21 drives the rotating shaft 4 to rotate with the change of the angle of the measuring scale 2, the rotating shaft 4 drives the pointer 41 to move, thereby facilitating the angle measurement observation matched with the protractor 1, improving the work efficiency and convenience.

[0022] Preferably, a horizontal adjusting rod 32 is threadedly connected outside the positioning plug 31 in the fixed plate 3 at both sides of the protractor 1.

[0023] Through the above technical scheme, the horizontal adjusting rod 32 facilitates the adjustment of the height of both sides of the protractor 1, thereby facilitating the protractor 1 to be in a balanced state, thereby ensuring the accuracy of the angle measurement.

[0024] Preferably, the first measuring scale 21 is longer than the second measuring scale 22, a first scale line 24 is arranged at the left side of the front side of the first measuring scale 21, a second scale line 25 is arranged at the right side of the front side of the first measuring scale 21, and a third scale line 26 corresponding to the first scale line 24 is arranged at the left side of the front side of the second measuring scale 22.

[0025] By the technical scheme, the second scale line 25 is convenient for observing the measured hole depth when the second measuring scale 22 is not unfolded from the first measuring scale 21, and the first scale line 24 cooperates with the third scale line 26 to facilitate observing and recording the depth value of the measured hole after the second measuring scale 22 is unfolded from the first measuring scale 21, thereby improving the convenience of work.

[0026] Preferably, the rear side of the second measuring scale 22 is symmetrically provided with two arc-shaped sliding strips 221, and the interior of the first measuring scale 21 is provided with two sliding grooves 211 in sliding connection with the arc-shaped sliding strips 221.

[0027] By the technical scheme, the two arc-shaped sliding strips 221 at the rear side of the second measuring scale 22 cooperate with the sliding grooves 211 in the interior of the first measuring scale 21, so that the second measuring scale 22 can be stably arranged in the first measuring scale 21 and stably moved.

[0028] Finally, it should be noted that the above implementation cases are only used to illustrate the present application, and are not intended to limit the technical solutions described in the present application; therefore, although the present application has been described in detail with reference to the above various implementation cases, those skilled in the art should understand that the present application can still be modified or replaced equivalently, and all technical solutions and improvements that do not deviate from the spirit and scope of the present application should be covered in the scope of the claims of the present application; the technical details not described in the present application are realized by the prior art.

Claims

1. A blast hole measuring device comprising a protractor, a measuring scale, characterised in that: Two fixed plates are symmetrically fixed at two ends of the protractor, and a positioning inserting rod is threadedly connected in each fixed plate; a bubble level is fixed at the lower part of the front side of the protractor; the measuring scale is composed of a first measuring scale and a second measuring scale; a rotating shaft is rotatably arranged at the center of the protractor, the rear end of the rotating shaft is connected with the top end of the first measuring scale, the front end of the rotating shaft is fixed with a pointer matched with the protractor; the second measuring scale is movably arranged in the first measuring scale; a driving gear is rotatably arranged at the right side of the first measuring scale, one end of the driving gear is rotatably arranged outside the first measuring scale and connected with a driving handle; the right side of the second measuring scale is provided with a rack engaged with the driving gear.

2. A blast hole measuring device according to claim 1, characterised in that: A horizontal adjusting rod is threadedly connected outside the positioning inserting rod in the fixed plate at the two sides of the protractor.

3. A blast hole measuring device according to claim 1, characterised in that: A first scale line is arranged at the left side of the front side of the first measuring scale, and a second scale line is arranged at the right side of the front side of the first measuring scale; the front side of the second measuring scale is provided with a third scale line corresponding to the first scale line.

4. A blast hole measuring device according to claim 1, characterised in that: Two arc-shaped sliding strips are symmetrically arranged at the rear side of the second measuring scale; two sliding grooves slidably connected with the arc-shaped sliding strips are arranged in the first measuring scale.

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