CN-122014232-A - Along with drilling deep measuring device suitable for colliery in pit

Abstract

The patent application belongs to the technical field of drilling depth measurement, and in particular relates to a drilling depth measurement device suitable for underground coal mines, which comprises a stator shell, a rotor baffle, a driven wheel, a compression assembly and a coding wheel; the stator shell is round, the stator shell is fixedly connected with a front clamp holder of the drill rod, the rotor baffle is rotatably arranged in the stator shell, the driven wheel and the coding wheel are oppositely arranged on two sides of the drill rod and are arranged on the rotor baffle, the compression assembly enables the driven wheel and the coding wheel to clamp the drill rod by utilizing elasticity, when the drill rod is not pushed in rotation, the rotor baffle, the driven wheel, the coding wheel and the drill rod rotate coaxially, when the drill rod is pushed in, the driven wheel and the coding wheel rotate themselves, through the structure, the pushing of the drill rod is decoupled, the rotation of the coding wheel is only influenced by the axial movement of the rotating rod, the measurement precision is guaranteed, and the rotor baffle is flexibly clamped on the drill rod through the compression assembly, so that the rotor baffle can adapt to certain disturbance, and the measurement precision is further improved.

Inventors

• FAN JIAWEN
• DUAN WENJIE
• YAN XIAOMING
• ZHU SIJIE
• GAO HUA
• ZHAO QIN
• WANG XIAOHONG
• Ren Shanlin
• LIU RUI
• HUANG LINSEN

Assignees

• 山西煤炭运销集团晋能煤矿工程有限公司
• 重庆中瓦智能科技有限公司

Dates

Publication Date

20260512

Application Date

20260327

Claims (8)

1. 1. Drilling-following depth measuring device suitable for coal mine is characterized in that: The device comprises a stator shell, a rotor baffle, a driven wheel, a compression assembly and a coding wheel; The stator shell is round, the stator shell is fixedly connected with the front clamp holder of the drill rod, and the rotor baffle is rotatably arranged in the stator shell; the driven wheel and the coding wheel are oppositely arranged on two sides of the drill rod and are arranged on the rotor baffle plate, and the compression assembly enables the driven wheel and the coding wheel to clamp the drill rod by utilizing elasticity; When the drill rod is not pushed in rotation, the rotor baffle, the driven wheel and the coding wheel rotate coaxially with the drill rod, and when the drill rod is pushed in rotation, the driven wheel and the coding wheel rotate.
2. 2. The downhole drilling depth measurement device of claim 1, wherein: The compression assembly comprises a first frame body and a compression spring, the driven wheel is rotatably mounted on a second frame body, the second frame body is slidably mounted on the rotor baffle, one end of the compression spring is fixedly mounted on the first frame body, the other end of the compression spring abuts against the second frame body, and the driven wheel is forced to be clung to the drill rod.
3. 3. The downhole drilling depth measurement device of claim 2, wherein: the driven wheel adopts a grooved wheel, and the coding wheel adopts a straight roller body.
4. 4. The downhole drilling depth measurement device of claim 1, wherein: the stator shell is characterized in that an annular groove is formed in the inner side of the stator shell, a plurality of rollers are rotatably mounted on the rotor baffle, and the rollers are uniformly distributed in the circumferential direction and roll along the annular groove.
5. 5. The downhole drilling depth measurement device of claim 1, wherein: The stator housing comprises two semi-ring bodies, and the two semi-ring bodies are fixed through bolts.
6. 6. The downhole drilling depth measurement device of claim 1, wherein: the device also comprises a battery box, wherein the battery box is arranged on the rotor baffle plate and supplies power for the coding wheel.
7. 7. The downhole drilling depth measurement device of claim 1, wherein: the stator is characterized by further comprising four corner brackets, wherein four lugs are arranged on the stator shell, the lugs are fixed with the four corner brackets through bolts, and the four corner brackets can be fixed with the front clamp holder through bolts.
8. 8. The downhole drilling depth measurement device of claim 1, wherein: the drilling machine further comprises an oil cylinder displacement sensor, wherein the oil cylinder displacement sensor is used for detecting the displacement distance of the drilling machine pushing oil cylinder.

Description

Along with drilling deep measuring device suitable for colliery in pit Technical Field The invention relates to the technical field of drilling depth measurement, in particular to a drilling depth measurement device suitable for underground coal mines. Background In underground coal mines, the depth measurement of a drilled hole is an indispensable procedure, the drilled hole can be ensured to penetrate through a target coal seam or a gas enrichment area through specific depth measurement, and the method is very important for drawing an accurate geological profile and finding out occurrence conditions of the coal seam. The prior art (CN 219061616U) is a drilling depth continuous measuring device, which comprises a roller with a photoelectric encoder, wherein the axis of a roller rotating shaft is crossed with the axis of a drill rod, and the roller is always in contact with the drill rod through a tension spring, so that the roller is forced to rotate when the drill rod is propelled, and the drilling depth is calculated by calculating the rotation number of the roller. The technical scheme is that the device can be decomposed into rotary motion and axial motion when a drill rod is pushed, in an ideal state, a roller is in point contact with the drill rod, the roller only responds to the axial motion of the drill rod and does not respond to the rotary motion, but in an actual state, the roller is extruded on the drill rod to form a small contact area, the area has a width, once the drill rod rotates, the roller is driven to rotate, and in the actual state, the device actually measures the synthetic linear velocity of the surface of the drill rod, therefore, an additional sensor or theoretical calculation is required to distinguish pure axial displacement and errors are easy to generate, the roller does not follow the push of the drill rod, and the roller is arranged on the ground, and the jumping and bending of the drill rod can directly influence the pressure and the contact of the roller, so that the measurement accuracy is influenced. Disclosure of Invention In order to overcome the defects of the prior art, the invention aims to provide the device for measuring the depth along with the drilling, which is suitable for the underground coal mine, and has high measurement precision and better stability. The technical scheme adopted by the invention is as follows: The device comprises a stator shell, a rotor baffle, a driven wheel, a compression assembly and a coding wheel; The stator shell is round, the stator shell is fixedly connected with the front clamp holder of the drill rod, and the rotor baffle is rotatably arranged in the stator shell; the driven wheel and the coding wheel are oppositely arranged on two sides of the drill rod and are arranged on the rotor baffle plate, and the compression assembly enables the driven wheel and the coding wheel to clamp the drill rod by utilizing elasticity; When the drill rod is not pushed in rotation, the rotor baffle, the driven wheel and the coding wheel rotate coaxially with the drill rod, and when the drill rod is pushed in rotation, the driven wheel and the coding wheel rotate. When the drill rod rotates, friction force drives the whole rotor baffle plate to idle along the stator shell, when the drill rod axially advances, the whole rotor assembly (comprising the coding wheel and the driven wheel) is pushed to move forwards, and the rotor is fixed on the front clamp holder through the stator, so that the rotation of the coding wheel is converted, and the coding wheel records and uploads the number of turns in a wireless transmission mode. Compared with the prior art, the invention has the beneficial effects that: 1. Through the structure, the pushing of the drill rod is decoupled, and the rotation of the coding wheel is only influenced by the axial movement of the rotating rod, so that the measurement accuracy is ensured; 2. The front clamp holder and the machine body of the drilling machine are integrated, the machine body of the drilling machine is stable due to the fact that the weight is large, when the drilling rod is jumped, the stator housing limits the rigidity of the rotor baffle plate, energy of the jumping can be effectively restrained, when the drilling rod is bent, the rotor baffle plate is clamped on the drilling rod through the compression assembly in a flexible mode, the rotor baffle plate can adapt to certain disturbance, and therefore measurement accuracy is improved. As a preferred embodiment of the invention, the compression assembly comprises a first frame body and a compression spring, the driven wheel is rotatably arranged on a second frame body, the second frame body is slidably arranged on the rotor baffle, one end of the compression spring is fixedly arranged on the first frame body, and the other end of the compression spring is propped against the second frame body to force the driven wheel to be clung to the drill rod. The device ha