Measuring device for blast hole

Abstract

The invention discloses a measuring device for a blast hole, and relates to the field of blast construction detection. The measuring device comprises a measuring tube and a water storage barrel, a third sliding rod and a fixing barrel are arranged in the measuring tube, a first moving block on the third sliding rod is connected with an outer side contact plate through a first rotating plate, the first moving block is connected with a second moving block through a connecting rod, the second moving block is rotationally connected with an outer side indication block through a second rotating plate, and a scale plate is fixedly installed on the measuring tube; a movable plate in the fixed barrel is fixedly connected with the connecting rod, a spring is connected between the movable plate and the fixed barrel, and the water storage barrel is connected with the fixed barrel through a conveying pipe set with a one-way valve; the device is in reliable contact with a hole wall through the contact plate and is matched with the indication block and the scale plate to visually read diameter data, so that the measurement precision is ensured; the design of the water storage barrel and the conveying pipe group facilitates operation and reduces measurement difficulty.

Description

Technical Field

[0001] This invention relates to the field of blasting construction detection technology, specifically a measuring device for blasting holes. Background Technology

[0002] In mining, building demolition, and other engineering projects, the accuracy of the diameter of blasting holes directly affects the blasting effect and construction safety, requiring the use of specialized measuring devices for detection. Existing blasting hole diameter measuring devices typically consist of a rod body and a radially deployable measuring rod. During measurement, the device is inserted into the hole, and the measuring rod extends inside the hole and presses against the hole wall.

[0003] However, in actual operation, when the diameter of the measurement position is large, the measuring rod extends to a large extent; when the device is pulled out of the hole and reaches a position with a smaller diameter, the extended measuring rod is prone to rigidly contacting the hole wall. Because the extended state of the measuring rod is difficult to retract in time, the device becomes stuck and cannot be smoothly removed from the hole. This not only affects the measurement efficiency but may also damage the measuring rod or cause secondary damage to the blast hole wall, causing inconvenience to construction. Therefore, in order to solve the above technical problems, this invention provides a measuring device for blast holes. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a measuring device for blast holes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a measuring device for blasting holes, comprising a measuring tube, a third sliding rod fixed at the bottom of the measuring tube, a first moving block slidably mounted on the third sliding rod, a pair of contact plates provided on the outside of the measuring tube, the contact plates being connected to the first moving block via a first rotating plate, the two ends of the first rotating plate being rotatably connected to the contact plates and the first moving block respectively, and a first sliding rod inserted into and slidably connected to the inside of the measuring tube being fixed on the contact plate;

[0006] A connecting rod is fixed on the first movable block, and a second movable block is fixedly installed on the top end of the connecting rod. A pair of indicator blocks are provided on the outside of the measuring tube. The indicator blocks and the second movable block are connected by a second rotating plate. The two ends of the second rotating plate are rotatably connected to the indicator blocks and the second movable block, respectively. A second sliding rod is fixed on the indicator block and slidably connected inside the measuring tube. A scale plate is fixedly installed on the measuring tube.

[0007] A fixed cylinder is fixed inside the measuring tube by a connecting block. A movable plate that is fixedly connected to a connecting rod is slidably installed inside the fixed cylinder. A spring is provided between the movable plate and the bottom surface of the fixed cylinder. The connecting rod passes through the fixed cylinder and is slidably connected.

[0008] It also includes a water storage tank, in which a piston plate with an operating rod is slidably installed, and the water storage tank is connected to the top of the fixed cylinder through a delivery pipe assembly with a one-way valve.

[0009] Preferably, the delivery pipe assembly includes a fixed pipe and a connecting hose. The bottom end of the fixed pipe is connected to the top end of the fixed cylinder, one end of the connecting hose is connected to the bottom end of the water storage tank, and the other end of the connecting hose is detachably connected to the top end of the fixed pipe.

[0010] Preferably, a plug is fixedly installed on the other end of the connecting hose, the inner diameter of the plug being adapted to the inner diameter of the fixed tube, a threaded sleeve is threadedly connected to the plug, the threaded sleeve is also threadedly connected to the top end of the fixed tube, and a limiting ring is provided at the top end of the fixed tube.

[0011] Preferably, a sleeve is fixedly installed on the top end of the fixed cylinder, an inner tube is slidably installed inside the sleeve, the connecting rod has a channel and multiple drainage holes inside, one end of the inner tube is fixedly connected to the connecting rod and communicates with the channel, and a valve is fixedly installed on the sleeve.

[0012] Compared with the prior art, the present invention provides a measuring device for blast holes, which has the following advantages:

[0013] 1. Through the linkage structure driven by spring and water pressure, the contact plate can be extended and retracted in a controllable manner, which solves the problem of jamming caused by the inability of traditional measuring rods to retract in time. It can be smoothly removed from blasting holes of different diameters, avoiding damage to the device and secondary damage to the hole wall, and improving measurement efficiency.

[0014] 2. By using the combination of the indicator block and the scale plate, the diameter data of the blasting hole can be read intuitively. Combined with the reliable contact between the contact plate and the hole wall, the measurement accuracy is ensured. At the same time, the design of the water storage tank and the delivery pipe assembly makes the operation convenient and reduces the measurement difficulty.

[0015] 3. The detachable design of the delivery pipe assembly facilitates the handling of the device, and the cleaning mechanism can clean the inside of the measuring tube through the drain hole to prevent the accumulation of impurities from affecting its use, extend the life of the device, and make it highly adaptable.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it according to the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Specific embodiments of the present invention are given in detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the fixed cylinder, the second moving block, the second rotating plate, the indicator block, and the connecting rod in this invention;

[0020] Figure 3 This is a schematic diagram of the structure of the connecting rod, the first moving block, the first rotating plate, the contact plate, and the first sliding rod in this invention;

[0021] Figure 4 This is a schematic diagram showing the disassembled structure of the fixed cylinder, movable plate, spring, and fixed tube in this invention;

[0022] Figure 5 This is a schematic diagram showing the disassembled structure of the water storage tank, piston plate, operating rod, and connecting hose in this invention;

[0023] Figure 6 This is a schematic diagram of the measuring tube in this invention.

[0024] In the diagram: 1. Measuring tube; 2. Connecting rod; 3. First moving block; 4. First rotating plate; 5. Contact plate; 6. First sliding rod; 7. Third sliding rod; 8. Second moving block; 9. Second rotating plate; 10. Indicating block; 11. Second sliding rod; 12. Fixed cylinder; 13. Movable plate; 14. Spring; 15. Fixed tube; 16. One-way valve; 17. Water storage tank; 18. Piston plate; 19. Operating rod; 20. Connecting hose; 21. Plug; 22. Threaded sleeve; 23. Limiting ring; 24. Sleeve; 25. Inner tube; 26. Valve; 27. Drain hole; 28. Scale plate. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1 to 6 The principles and features of the present invention are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0026] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example 1:

[0029] Please combine Figures 1 to 6 As shown, the present invention provides a measuring device for blasting holes. The measuring device includes a measuring tube 1, a third sliding rod 7 is fixedly installed at the bottom inner side of the measuring tube 1, a first moving block 3 is slidably installed on the third sliding rod 7, a pair of contact plates 5 are provided on the outer side of the measuring tube 1, a first rotating plate 4 is provided between the two contact plates 5 and the first moving block 3, the bottom end of the first rotating plate 4 is rotatably connected to the contact plate 5, the top end of the first rotating plate 4 is rotatably connected to the first moving block 3, and a first sliding rod 6 is fixedly installed on the opposite surfaces of the two contact plates 5. The first sliding rod 6 is inserted into the interior of the measuring tube 1 and slidably connected to the measuring tube 1.

[0030] A connecting rod 2 is fixedly installed on the upper surface of the first moving block 3. A second moving block 8 is fixedly installed at the top of the connecting rod 2. A pair of indicator blocks 10 are provided on the outside of the measuring tube 1. A second rotating plate 9 is provided between each of the two indicator blocks 10 and the second moving block 8. The bottom end of the second rotating plate 9 is rotatably connected to the indicator block 10, and the top end of the second rotating plate 9 is rotatably connected to the second moving block 8. A second sliding rod 11 is fixedly installed on the opposite surface of the two indicator blocks 10. Both second sliding rods 11 are inserted into the inside of the measuring tube 1 and are slidably connected to the measuring tube 1. A pair of scale plates 28 are fixedly installed on the outer surface of the measuring tube 1. Each scale plate 28 is provided with a track for the indicator blocks 10 to slide on, and scale lines are also provided on the two scale plates 28.

[0031] A fixed cylinder 12 is fixedly installed on the inner surface of the measuring tube 1 by a connecting block. A movable plate 13 is slidably installed inside the fixed cylinder 12. The end of the connecting rod 2 passes through the inside of the fixed cylinder 12 and is slidably connected to the fixed cylinder 12. The movable plate 13 is fixedly connected to the connecting rod 2. A spring 14 is fixedly installed between the movable plate 13 and the inner bottom surface of the fixed cylinder 12.

[0032] The measuring device also has a water storage tank 17, a piston plate 18 is slidably installed inside the water storage tank 17, and an operating rod 19 is fixedly installed on the piston plate 18; the water storage tank 17 is fixedly connected to the top of the fixed cylinder 12 through a conveying pipe assembly, and a one-way valve 16 is fixedly installed on the conveying pipe assembly.

[0033] When measuring the rupture hole, insert the bottom end of the measuring tube 1 into the hole. Once the bottom end of the measuring tube 1 is inserted to the designated position, grasp and press the operating lever 19 to move the piston plate 18 towards the bottom of the water storage tank 17. This forces the water stored inside the water storage tank 17 into the fixed cylinder 12 through the conveying pipe assembly. The movable plate 13, under pressure, moves towards the bottom of the fixed cylinder 12. Since the movable plate 13 is fixedly connected to the connecting rod 2, the connecting rod 2 will drive the connecting rod 2 and the second moving block 8 to descend synchronously. The two first rotating plates 4 push the two contact plates 5 to slide outwards from the measuring tube 1. At the same time, the two second moving blocks 8 also push the two indicator blocks 10 to the outwards from the measuring tube 1. When the two contact plates 5 come into contact with the hole wall, it becomes difficult to continue pressing down the operating rod 19. At this point, the pressing of the operating rod 19 is stopped. At this time, the two indicator blocks 10 enter the interior of the two scale plates 28 respectively. The diameter of the blast hole can be determined according to the scale on the two scale plates 28. After the measurement is completed, the water in the fixed cylinder 12 is drained. Under the elastic force of the spring 14, the movable plate 13 moves upward. The connecting rod 2 then moves the first moving block 3 and the second moving block 8 upward. The two contact plates 5 move towards the inside of the measuring tube 1. Then the measuring tube 1 can be taken out from the inside of the blast hole without any obstruction, which reduces the difficulty of the entire measurement process.

[0034] Example 2:

[0035] The delivery pipe assembly includes a fixed pipe 15 and a connecting hose 20. The bottom end of the fixed pipe 15 is fixedly connected to the top end of the fixed cylinder 12, one end of the connecting hose 20 is fixedly connected to the bottom end of the water storage tank 17, and the other end of the connecting hose 20 is detachably connected to the top end of the fixed pipe 15. The detachable connection between the two reduces the difficulty of transporting the measuring device.

[0036] A plug 21 that matches the inner diameter of the fixed tube 15 is fixedly installed on the other end of the connecting hose 20. A threaded sleeve 22 is threadedly connected to the other end of the plug 21. The threaded sleeve 22 can be threadedly connected to the top end of the fixed tube 15, and a limit ring 23 is fixedly connected to the top end of the fixed tube 15.

[0037] A sleeve 24 is also fixedly installed on the top of the fixed cylinder 12. An inner tube 25 is slidably installed inside the sleeve 24. A channel is opened inside the connecting rod 2, and multiple drainage holes 27 are opened on the connecting rod 2. One end of the inner tube 25 is fixedly connected to the connecting rod 2. The inner tube 25 is connected to the internal channel of the connecting rod 2. A valve 26 is fixedly installed on the sleeve 24.

[0038] After recording the graduations on the two scale plates 28, the valve 26 on the sleeve 24 can be opened. Under the elastic force of the spring 14, the movable plate 13 moves upward, and the movable plate 13 squeezes the water stored in the fixed cylinder 12. The water is then transported through the sleeve 24 and the inner tube 25 to the channel inside the connecting rod 2, and finally, multiple drain holes 27 spray out water onto the inner wall of the measuring tube 1 to clean the inner wall of the measuring tube 1. This prevents impurities such as mud from entering the interior of the measuring tube 1 during the measurement process, and avoids the accumulation of too many impurities inside the measuring tube 1, which would affect the use of the measuring device.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Those skilled in the art can readily implement the present invention based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the present invention, utilizing the disclosed technical content, are equivalent embodiments of the present invention. Furthermore, any modifications, alterations, or variations made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the present invention.

Claims

1. A measuring device for blasting holes, characterized in that, The device includes a measuring tube (1), a third sliding rod (7) is fixed at the bottom inside the measuring tube (1), a first moving block (3) is slidably installed on the third sliding rod (7), a pair of contact plates (5) are provided on the outside of the measuring tube (1), the contact plates (5) and the first moving block (3) are connected by a first rotating plate (4), the two ends of the first rotating plate (4) are rotatably connected to the contact plates (5) and the first moving block (3) respectively, and a first sliding rod (6) is fixed on the contact plate (5) and slidably connected to the inside of the measuring tube (1). A connecting rod (2) is fixed on the first moving block (3), and a second moving block (8) is fixedly installed on the top end of the connecting rod (2). A pair of indicator blocks (10) are provided on the outside of the measuring tube (1). The indicator blocks (10) and the second moving block (8) are connected by a second rotating plate (9). The two ends of the second rotating plate (9) are rotatably connected to the indicator blocks (10) and the second moving block (8) respectively. A second sliding rod (11) is fixed on the indicator block (10) and slidably connected inside the measuring tube (1). A scale plate (28) is fixedly installed on the measuring tube (1). The measuring tube (1) is fixed with a fixed cylinder (12) by a connecting block. A movable plate (13) that is fixedly connected to the connecting rod (2) is slidably installed inside the fixed cylinder (12). A spring (14) is provided between the movable plate (13) and the bottom surface of the fixed cylinder (12). The connecting rod (2) passes through the fixed cylinder (12) and is slidably connected. It also includes a water storage tank (17), in which a piston plate (18) with an operating rod (19) is slidably installed, and the water storage tank (17) is connected to the top of the fixed cylinder (12) through a delivery pipe assembly with a one-way valve (16).

2. The measuring device according to claim 1, characterized in that, The delivery pipe assembly includes a fixed pipe (15) and a connecting hose (20). The bottom end of the fixed pipe (15) is connected to the top end of the fixed cylinder (12). One end of the connecting hose (20) is connected to the bottom end of the water storage tank (17). The other end of the connecting hose (20) is detachably connected to the top end of the fixed pipe (15).

3. The measuring device according to claim 2, characterized in that, A plug (21) is fixedly installed on the other end of the connecting hose (20). The inner diameter of the plug (21) is adapted to the inner diameter of the fixed tube (15). A threaded sleeve (22) is threadedly connected to the plug (21). The threaded sleeve (22) is also threadedly connected to the top end of the fixed tube (15). A limiting ring (23) is provided at the top end of the fixed tube (15).

4. The measuring device according to claim 1 or 2, characterized in that, A sleeve (24) is fixedly installed on the top of the fixed cylinder (12). An inner tube (25) is slidably installed inside the sleeve (24). The connecting rod (2) has a channel inside and multiple drainage holes (27). One end of the inner tube (25) is fixedly connected to the connecting rod (2) and communicates with the channel. A valve (26) is fixedly installed on the sleeve (24).

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