Blasting hole inspection device

Abstract

The utility model provides a blasting hole inspection device which comprises a vertical pipe and a vertical rod, the length of the vertical rod is larger than that of the vertical pipe, the vertical rod is inserted into the vertical pipe and connected in a sliding mode, the two sides of the lower end of the vertical pipe are hinged to one ends of two measuring rods respectively, and supporting rods with the two ends hinged are arranged between the lower end of the vertical rod and the measuring rods. A grab handle is fixed at the top of the vertical rod, a baffle ring used for flattening the measuring rod is fixed on the vertical rod at the lower end of the vertical pipe, and scales used for recording the position of the top end of the vertical pipe are arranged on the outer wall of the upper part of the vertical rod. According to the blasting hole inspection device, after the measuring rods extend into the explosive chamber, the measuring rods can be expanded towards the two sides through the supporting rods, the lower ends of the two measuring rods are made to make contact with the inner wall of the explosive chamber, and then the scales of the corresponding positions of the top end of the vertical pipe and the vertical rod are recorded. After the measuring rods are taken out of the medicine chamber, the vertical pipe restores to the scale position of the corresponding position, the distance between the lower ends of the two measuring rods is measured, different positions of the medicine chamber can be repeatedly measured as needed, and the volume of the medicine chamber is estimated.

Description

Technical Field

[0001] The present application relates to blast hole inspection technology, and in particular to a blast hole inspection device. Background Art

[0002] The powder pot blasting method is to load a small amount of explosives at the bottom of the drilled blasting hole. After a small blasting, the bottom of the blasting hole is expanded to form a gourd-shaped powder chamber. More explosives are then loaded into this chamber for further blasting, thereby improving the blasting efficiency.

[0003] The powder pot blasting method requires multiple blasting of the same blasting hole to expand the volume of the powder pot and meet the requirements of the blasting design. The blasting hole and the powder pot need to be repeatedly measured and inspected before each blasting. The powder pot is a chamber located at the lower end of the blasting hole. Usually, the blasting hole is long and narrow, and the space of the powder chamber is larger than the blasting hole. The existing inspection device is difficult to extend into the powder pot for measurement and inspection, resulting in a large error in the volume estimation of the powder chamber, which affects the determination of the charge amount before the next blasting. Utility Model Content

[0004] The present application provides a blasting blasthole inspection device, which is used to solve the problem that the existing chamber is difficult to measure and inspect.

[0005] The present application provides a blasting hole inspection device, comprising a vertical tube and a vertical rod, wherein the length of the vertical rod is greater than that of the vertical tube, the vertical rod is inserted into the vertical tube and is slidably connected, the two sides of the lower end of the vertical tube are respectively hinged to one end of two measuring rods, a support rod with two ends hinged is provided between the lower end of the vertical rod and the measuring rods, a handle is fixed on the top of the vertical rod, a retaining ring for flattening the measuring rods is fixed on the vertical rod at the lower end of the vertical tube, and a scale for recording the position of the top end of the vertical tube is provided on the upper outer wall of the vertical rod.

[0006] Optionally, a rotatable guide ball is provided at the bottom of the vertical rod.

[0007] Optionally, a threaded barrel is vertically fixed to the top of the guide ball, and the threaded barrel is threadedly connected to the lower end of the vertical rod.

[0008] Optionally, a hole measuring slider which is slidably connected to the vertical pipe is sleeved on the vertical pipe, and a pull rope is connected to the upper end of the hole measuring slider.

[0009] Optionally, the hole measuring slider is composed of a sleeve, a connecting rod and an arc block, the sleeve is slidably connected to the vertical pipe, arc blocks are provided on both sides of the sleeve, the arc blocks are fixed to the sleeve by a connecting rod, and the connecting rod is a telescopic rod used to adjust the spacing between the arc blocks.

[0010] Optionally, the measuring rod is a telescopic rod that can be fixed after adjusting the extended length.

[0011] Compared with the prior art, the blasting hole inspection device provided by the present application has the following beneficial effects:

[0012] After the measuring rod is extended into the chamber, it can be stretched to both sides by the support rod, so that the lower ends of the two measuring rods are in contact with the inner wall of the chamber respectively, and then the scales at the corresponding positions of the top of the vertical tube and the vertical rod are recorded. After the measuring rod is taken out of the chamber, the vertical tube is restored to the corresponding position scale, and the distance between the lower ends of the two measuring rods is measured. If necessary, the different positions of the chamber can be measured repeatedly to estimate the volume of the chamber and inspect the blasting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic diagram of the structure of a blast hole inspection device provided in one embodiment of the present application;

[0015] Figure 2 A cross-sectional view of a blast hole inspection device provided in one embodiment of the present application;

[0016] Figure 3 An enlarged view of the measuring rod of a blast hole inspection device provided in one embodiment of the present application;

[0017] Figure 4 A top view of a hole measuring slider of a blast hole inspection device provided in one embodiment of the present application;

[0018] Figure 5 A schematic diagram of the use of a measuring rod of a blasting hole inspection device provided in one embodiment of the present application.

[0019] Description of reference numerals:

[0020] Vertical tube 1; vertical rod 2; measuring rod 3; supporting rod 4; handle 5; retaining ring 6; guide ball 7; threaded tube 8; hole measuring slide 9; pull rope 10; sleeve 11; connecting rod 12; arc block 13. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0022] like Figure 1-Figure 5 As shown, an embodiment of the present application provides a blasting hole inspection device, including a vertical tube 1 and a vertical rod 2, wherein the length of the vertical rod 2 is greater than that of the vertical tube 1, the vertical rod 2 is inserted into the vertical tube 1 for sliding connection, the two sides of the lower end of the vertical tube 1 are respectively hinged to one end of two measuring rods 3, a support rod 4 with hinged ends is provided between the lower end of the vertical rod 2 and the measuring rod 3, a handle 5 is fixed on the top of the vertical rod 2, a retaining ring 6 for flattening the measuring rod 3 is fixed on the vertical rod 2 at the lower end of the vertical tube 1, and a scale for recording the top position of the vertical tube 1 is provided on the upper outer wall of the vertical rod 2.

[0023] When inspecting the blasting hole of the medicine pot, the measuring rod 3 fits with the side walls of the vertical tube 1 and the vertical rod 2 and extends into the blasting hole, and the bottom of the vertical rod 2 extends into the bottom support of the blasting hole. Hold the handle 5, push the vertical tube 1 downward, and open the measuring rod 3 through the support rod 4 so that its lower end contacts the inner wall of the medicine chamber. After recording the scales at the corresponding positions of the top of the vertical tube 1 and the vertical rod 2, slide the vertical tube 1 upward to retract the measuring rod 3 and then lift it out of the blasting hole. Open the measuring rod 3 again so that the top of the vertical tube 1 returns to the recorded scale corresponding to the vertical rod 2, and measure the distance between the lower ends of the two measuring rods 3.

[0024] In this embodiment, after the measuring rod 3 is extended into the chamber, it can be stretched to both sides by the support rod 4, so that the lower ends of the two measuring rods 3 are respectively in contact with the inner wall of the chamber, and then the scales of the corresponding positions of the top of the vertical tube 1 and the vertical rod 2 are recorded. After the measuring rod 3 is taken out of the chamber, the vertical tube 1 is restored to the corresponding position scale, and the distance between the lower ends of the two measuring rods 3 is measured. If necessary, the different positions of the chamber can be repeatedly measured to estimate the volume of the chamber and inspect the blasting hole.

[0025] In a possible implementation, a rotatable guide ball 7 is provided at the bottom of the vertical rod 2 .

[0026] The guide ball 7 is rotatably connected to the bottom of the vertical rod 2. When the convex block is stuck, it can rotate to change the direction angle, so that the vertical rod 2 can smoothly pass through the blasting hole when extending into the chamber.

[0027] In a possible implementation, a threaded barrel 8 is vertically fixed to the top of the guide ball 7 , and the threaded barrel 8 is threadedly connected to the lower end of the vertical rod 2 .

[0028] The guide ball 7 is threadedly connected to the lower end of the vertical rod 2 through the threaded tube 8, which is convenient for disassembly and assembly and flexible for use, and also convenient for adjusting the distance from the vertical rod 2 to the bottom, thereby adjusting the height of the rotating shaft of the measuring rod 3 from the bottom surface of the medicine chamber.

[0029] In a possible implementation, a hole measuring slider 9 slidably connected to the vertical pipe 1 is sleeved on the vertical pipe 1 , and a pull rope 10 is connected to the upper end of the hole measuring slider 9 .

[0030] The hole measuring slide block 9 is sleeved on the vertical pipe 1, and is slid into the chamber through the blasting hole along the vertical pipe 1. The smoothness of the sliding down of the hole measuring slide block 9 can be observed to check whether the blasting hole is stuck or misaligned. The hole measuring slide block 9 can be pulled out of the blasting hole by the pull rope 10.

[0031] In a possible implementation, the hole measuring slider 9 is composed of a sleeve 11, a connecting rod 12 and an arc block 13. The sleeve 11 is slidably connected to the vertical pipe 1. Arc blocks 13 are provided on both sides of the sleeve 11. The arc blocks 13 are fixed to the sleeve 11 through the connecting rod 12. The connecting rod 12 is a telescopic rod used to adjust the spacing between the arc blocks 13.

[0032] The connecting rod 12 made of a telescopic rod is convenient for adjusting the distance between the two arc blocks 13. By adjusting the distance between the two arc blocks 13, different sizes of explosive packages can be simulated and blasting holes of different diameters can be adapted for inspection.

[0033] In a possible implementation, the measuring rod 3 is a telescopic rod that can be fixed after adjusting the extension length.

[0034] The telescopic measuring rod 3 can be adjusted according to the estimated different sizes of medicine chambers, so that the distance between the two measuring rods 3 is larger than the diameter of the medicine chamber, which effectively improves the accuracy of measurement and reduces the number of re-measurements.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A blasting hole inspection device, comprising a vertical tube (1) and a vertical rod (2), wherein the length of the vertical rod (2) is greater than that of the vertical tube (1), the vertical rod (2) is inserted into the vertical tube (1) and slidably connected, the lower end of the vertical tube (1) is hinged to one end of two measuring rods (3) on both sides, a support rod (4) with two ends hinged is provided between the lower end of the vertical rod (2) and the measuring rods (3), a handle (5) is fixed to the top of the vertical rod (2), a retaining ring (6) for flattening the measuring rods (3) is fixed to the vertical rod (2) at the lower end of the vertical tube (1), and a scale for recording the top position of the vertical tube (1) is provided on the upper outer wall of the vertical rod (2).

2. The blasting hole inspection device according to claim 1, characterized in that: A rotatable guide ball (7) is provided at the bottom of the vertical rod (2).

3. The blasting hole inspection device according to claim 2, characterized in that: A threaded barrel (8) is vertically fixed on the top of the guide ball (7), and the threaded barrel (8) is threadedly connected to the lower end of the vertical rod (2).

4. The blasting hole inspection device according to claim 1, characterized in that: The vertical pipe (1) is sleeved with a hole measuring slider (9) which is slidably connected thereto, and the upper end of the hole measuring slider (9) is connected to a pull rope (10).

5. The blasting hole inspection device according to claim 4, characterized in that: The hole measuring slide block (9) is composed of a sleeve (11), a connecting rod (12) and an arc block (13); the sleeve (11) is sleeved on the vertical pipe (1) for sliding connection; arc blocks (13) are provided on both sides of the sleeve (11); the arc blocks (13) are fixed to the sleeve (11) through the connecting rod (12); and the connecting rod (12) is a telescopic rod for adjusting the spacing of the arc blocks (13).

6. The blasting hole inspection device according to any one of claims 1 to 5, characterized in that: The measuring rod (3) is a telescopic rod which can be fixed after the extension length is adjusted.

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