Underground coal mine drill hole depth measuring instrument
By using rotary encoder and rotary wheel components in the coal mine underground drilling hole depth measuring instrument, the problems of low accuracy and complex operation of downhole drilling depth measurement are solved, and high-precision and simple drilling depth measurement are achieved.
Patent Information
- Application Number
- CN202422851546.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-22
AI Technical Summary
The existing downhole drilling depth measurement methods have problems such as low accuracy, complex operation and poor adaptability.
A coal mine underground drilling hole depth measuring instrument including support plate and rotary measurement components is used to sense the movement direction and speed of the drill pipe through the upper and lower rotors, generate a displacement signal, and calculate the drilling depth based on the ratio of the roller circumference to the encoder step angle, and automatically adjust the depth calculation to ensure accuracy.
High-precision, simple operation drilling depth measurement is achieved, reducing human intervention and improving measurement accuracy and adaptability.
Smart Images
Figure CN223282056U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine borehole depth measuring equipment, in particular to an underground coal mine borehole depth measuring instrument. Background Art
[0002] With the demand for digitalization and refined management of directional drilling and ordinary drilling in coal mines, digital statistics and management of drilling depth are becoming more and more urgent.
[0003] Currently, there are three main methods for measuring downhole borehole depth on the market. One is image recognition, which uses drill rod algorithms to calculate the borehole depth using collected drilling site videos. However, due to the harsh and dusty downhole environment, the video images are not clear, resulting in large errors in recognition. The other method uses mechanical waves generated by tapping the drill rods to measure the hole depth. After drilling is completed, all drill rods are left in the borehole. The drill rods are struck with a hammer at the hole mouth to generate mechanical waves. The mechanical waves propagate along the drill rod body and return after reaching the drill bit at the bottom of the hole. The wave is then received by a sensor at the hole mouth. Finally, the propagation time of the mechanical wave is multiplied by the speed to obtain the borehole depth. The problem with this method is that the speed of the mechanical wave at the junction of each two drill rods is extremely uncertain. Since there are many such junctions in each borehole, the speed is also extremely uncertain, which ultimately leads to large errors in the borehole depth, even exceeding ten meters. The third method is to manually count the drill rods, which is not only very labor-intensive but also prone to omissions or over-counting.
[0004] In order to solve the above problems, we proposed a borehole depth measuring instrument for underground coal mines. Utility Model Content
[0005] The purpose of the utility model is to provide a coal mine underground drilling depth measuring instrument, which solves the problems of low precision, complex operation and poor adaptability in the existing underground drilling depth measurement method.
[0006] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said support plate and is located on one side of said support plate. said linking rod is pivotally connected to said support plate and is located on one side of said support plate. said linking rod is pivotally connected to said support plate and is located on
[0007] The rotary measuring assembly further includes a drill rod, which is disposed below the upper rotary wheel and above the lower rotary wheel. The drill rod is vertically disposed to the upper rotary wheel and the lower rotary wheel, respectively.
[0008] In which, the rotary measuring assembly also includes a rotary encoder, which is detachably connected to the lower rotating wheel through the support plate and is located on one side of the lower rotating wheel. The rotary encoder is arranged vertically to the support plate and is arranged on the side of the support plate away from the lower rotating wheel.
[0009] In which, the rotary measuring assembly also includes a fixed frame and an auxiliary frame, the fixed frame is fixedly connected to the support plate and is located on the side of the support plate away from the upper rotating wheel, the auxiliary frame is fixedly connected to the support plate and is located on the side of the support plate away from the fixed rod, and the fixed rod is arranged below the fixed rod.
[0010] Wherein, the rotary measuring assembly also includes a hook spring, one end of the hook spring is detachably connected to the fixing frame and is located below one end of the fixing frame, and the other end of the hook spring is detachably connected to the auxiliary frame and is located above one end of the auxiliary frame.
[0011] The utility model discloses a coal mine underground drilling depth measuring instrument, comprising a support plate and a rotary measuring assembly, wherein the rotary measuring assembly comprises a connecting rod, a fixed rod, an upper rotary wheel, a lower rotary wheel and a rotary encoder, wherein the connecting rod is detachably connected to the support plate and is located on one side of the support plate, the upper rotary wheel is rotatably connected to the support plate and is located on one side of the support plate, and the upper rotary wheel is arranged below the connecting rod, the lower rotary wheel is rotatably connected to the support plate and is located on one side of the support plate, and the lower rotary wheel is arranged below the upper rotary wheel, the fixed rod is detachably connected to the support plate and is located on one side of the support plate, and the fixed rod is arranged below the lower rotary wheel, the rotary encoder passes through the support plate and is detachably connected to the lower rotary wheel and is located on one side of the lower rotary wheel, and the rotary encoder is arranged perpendicular to the support plate, and the rotary encoder is arranged on the side of the support plate away from the lower rotary wheel. Due to the addition of the rotary measuring assembly, the problems of low accuracy, complex operation and poor adaptability existing in the existing underground drilling depth measurement method will be actively and effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0013] Figure 1 It is a schematic structural diagram of the entire utility model.
[0014] Figure 2 It is a front view of the entire utility model.
[0015] Figure 3 It is a side view of the entire utility model.
[0016] 101-support plate, 102-connecting rod, 103-upper rotary wheel, 104-drill rod, 105-lower rotary wheel, 106-rotary encoder, 107-fixing rod, 108-fixing frame, 109-auxiliary frame, 110-hook spring. DETAILED DESCRIPTION
[0017] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.
[0018] See also Figures 1 to 3 , Figure 1 It is a schematic diagram of the overall structure of the utility model. Figure 2 This is a front view of the entire utility model. Figure 3 It is a side view of the entire utility model.
[0019] The utility model provides a coal mine underground drilling depth measuring instrument, including a support plate 101 and a rotary measuring assembly, the rotary measuring assembly including a connecting rod 102, a fixed rod 107, an upper rotary wheel 103 and a lower rotary wheel 105, a drill rod 104, a rotary encoder 106, a fixed frame 108, an auxiliary frame 109 and a hook spring 110. The above scheme solves the problems of low accuracy, complex operation and poor adaptability in the existing underground drilling depth measurement method. It can be understood that the above scheme can sense the movement direction and speed of the drill rod 104 by contacting the surface of the drill rod 104 when the drill rod 104 is drilling. The rotary encoder 106 senses the movement direction and speed of the drill rod 104 according to the upper rotary wheel 103 and the lower rotary wheel 105. 03 and the rotation angle of the lower rotating wheel 105 generate corresponding displacement signals. Through the preset ratio of the circumference of the roller and the step angle of the rotary encoder 106, the signal processing unit can convert the rotation angle into the actual linear displacement of the drill rod 104, that is, the drilling depth. Each rotation of the roller corresponds to a certain depth increment. When the drill rod 104 is retracted, the system can recognize the reverse movement and automatically perform a depth decrease calculation to ensure that the final displayed drilling depth is accurate. The design has high measurement accuracy, simple structure, strong wear resistance, easy operation, and does not require any human intervention during the measurement process. It will effectively solve the problems of low accuracy, complex operation and poor adaptability in the existing downhole drilling depth measurement method.
[0020] According to this specific embodiment, the connecting rod 102 is detachably connected to the support plate 101 and is located on one side of the support plate 101. The upper rotating wheel 103 is rotatably connected to the support plate 101 and is located on one side of the support plate 101. The upper rotating wheel 103 is arranged below the connecting rod 102. The lower rotating wheel 105 is rotatably connected to the support plate 101 and is located on one side of the support plate 101. The lower rotating wheel 105 is arranged below the upper rotating wheel 103. The fixing rod 107 is detachably connected to the support plate 101 and is located on the support plate 101. On one side, and the fixing rod 107 is arranged below the lower rotary wheel 105, the rotary encoder 106 passes through the support plate 101 and is detachably connected to the lower rotary wheel 105, and is located on one side of the lower rotary wheel 105, and the rotary encoder 106 is vertically arranged with the support plate 101, and the rotary encoder 106 is arranged on the side of the support plate 101 away from the lower rotary wheel 105, the upper rotary wheel 103 and the lower rotary wheel 105 are located in the central area of the whole, the upper rotary wheel 103 and the lower rotary wheel 105 are mounted on the support plate 101, and are connected to the drill rod 104. The radial direction remains parallel, and the axis of the upper rotating wheel 103 and the lower rotating wheel 105 are connected to the support plate 101 through a rotating shaft and can rotate freely. The design of the upper rotating wheel 103 and the lower rotating wheel 105 allows the linear displacement of the drill rod 104 to be sensed by contacting the surface of the drill rod 104 when the drill rod 104 moves. The linear motion of the drill rod 104 is converted into an angular change by the rotational motion of the upper rotating wheel 103 and the lower rotating wheel 105, and the angular change is then measured by the subsequent rotary encoder 106, which passes through the support plate 101 and the lower rotating wheel 1 05 is disassembled and connected, and is located on one side of the lower rotary wheel 105, and the rotary encoder 106 is arranged vertically to the support plate 101, and the rotary encoder 106 is arranged on the side of the support plate 101 away from the lower rotary wheel 105. The rotary encoder 106 is installed on the side of the metering roller and is directly connected to the rotating shaft of the lower rotary wheel 105. The encoder is responsible for converting the rotational motion of the lower rotary wheel 105 into an electrical signal and feeding this signal back to the processing unit of the measuring instrument. The high precision of the rotary encoder 106 ensures that the angular displacement of the drill rod 104 can be accurately measured.
[0021] The drill rod 104 is arranged below the upper rotary wheel 103 and above the lower rotary wheel 105. The drill rod 104 is arranged vertically to the upper rotary wheel 103 and the lower rotary wheel 105 respectively. The drill rod 104 will be the main structural component for drilling.
[0022] The fixing frame 108 is fixedly connected to the support plate 101 and is located on a side of the support plate 101 away from the upper rotating wheel 103 . The fixing frame 108 cooperates with the auxiliary frame 109 to connect the hook spring 110 .
[0023] Secondly, the auxiliary frame 109 is fixedly connected to the support plate 101 and is located on a side of the support plate 101 away from the fixing rod 107 , and the fixing rod 107 is disposed below the fixing rod 107 .
[0024] At the same time, one end of the hook spring 110 is detachably connected to the fixing frame 108 and is located below one end of the fixing frame 108, and the other end of the hook spring 110 is detachably connected to the auxiliary frame 109 and is located above one end of the auxiliary frame 109. The hook spring 110 is located on the outside of the two side columns. The hook spring 110 provides stable elastic pressure to ensure that the upper rotating wheel 103 and the lower rotating wheel 105 are always tightly fitted on both sides of the drill rod 104. Regardless of whether there is a slight diameter difference between the drill rod 104 or in a vibration environment, the upper rotating wheel 103 and the lower rotating wheel 105 can effectively maintain the contact pressure between the upper rotating wheel 103 and the lower rotating wheel 105, thereby ensuring the continuity and accuracy of the measurement process.
[0025] When using the present invention, when the drill rod 104 is drilling, the upper rotary wheel 103 and the lower rotary wheel 105 sense the movement direction and speed of the drill rod 104 by contacting the surface of the drill rod 104, and the rotary encoder 106 generates a corresponding displacement signal according to the rotation angle of the upper rotary wheel 103 and the lower rotary wheel 105. Through the ratio of the preset circumference of the roller and the step angle of the rotary encoder 106, the signal processing unit can convert the rotation angle into the actual linear displacement of the drill rod 104, that is, the drilling depth. Each rotation of the roller corresponds to a certain depth increment. When the drill rod 104 is retracted, the system can recognize the reverse movement and automatically perform a depth reduction calculation to ensure that the final displayed drilling depth is accurate. This design has high measurement accuracy, simple structure, strong wear resistance, easy operation, and does not require any human intervention during the measurement process. It will effectively solve the problems of low accuracy, complex operation and poor adaptability in existing downhole drilling depth measurement methods.
[0026] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the utility model.
Claims
1. A coal mine underground drilling depth measuring instrument, comprising a support plate, characterized in that: It also includes a rotary measuring assembly, which includes a connecting rod, a fixed rod, an upper rotating wheel, a lower rotating wheel and a rotary encoder, wherein the connecting rod is detachably connected to the support plate and is located on one side of the support plate, the upper rotating wheel is rotatably connected to the support plate and is located on one side of the support plate, and the upper rotating wheel is arranged below the connecting rod, the lower rotating wheel is rotatably connected to the support plate and is located on one side of the support plate, and the lower rotating wheel is arranged below the upper rotating wheel, the fixed rod is detachably connected to the support plate and is located on one side of the support plate, and the fixed rod is arranged below the lower rotating wheel, the rotary encoder passes through the support plate and is detachably connected to the lower rotating wheel and is located on one side of the lower rotating wheel, and the rotary encoder is arranged perpendicular to the support plate, and the rotary encoder is arranged on a side of the support plate away from the lower rotating wheel.
2. The coal mine underground drilling depth measuring instrument according to claim 1, characterized in that: The rotary measuring assembly further includes a drill rod, which is arranged below the upper rotary wheel and above the lower rotary wheel. The drill rod is respectively arranged vertically to the upper rotary wheel and the lower rotary wheel.
3. The coal mine underground drilling depth measuring instrument according to claim 2, characterized in that: The rotary measuring assembly further comprises a fixing frame, which is fixedly connected to the support plate and is located on a side of the support plate away from the upper rotating wheel.
4. The coal mine underground drilling depth measuring instrument according to claim 3, characterized in that: The rotary measuring assembly further includes an auxiliary frame, which is fixedly connected to the support plate and located on a side of the support plate away from the fixing rod, and the fixing rod is arranged below the fixing rod.
5. The coal mine underground drilling depth measuring instrument according to claim 4, characterized in that: The rotary measuring assembly also includes a hook spring, one end of which is detachably connected to the fixing frame and located below one end of the fixing frame, and the other end of which is detachably connected to the auxiliary frame and located above one end of the auxiliary frame.