阅读说明：本技术 一种煤钻杆抗扭矩测试装置及方法 (Coal drill rod anti-torque testing device and method ) 是由 王金利 刘露露 李瑶瑶 张亦凡 杨帆 王连国 牛永峰 蒋程宇 傅晓刚 张晓君 于 2021-09-10 设计创作，主要内容包括：本发明公开了一种煤钻杆抗扭矩测试装置及方法,包括煤钻杆,控制台,动力装置,轴向施力装置,扭矩转速测试装置,加载装置；控制台驱动连接动力装置；动力装置,轴向施力装置和煤钻杆的一端依次连接,控制台控制动力装置通过轴向施力装置向煤钻杆施加扭矩力；煤钻杆的另一端与加载装置连接,加载装置对煤钻杆施加扭矩并通过轴向施力装置使得煤钻杆跟随动力装置发生抗扭矩；扭矩转速测试装置与煤钻杆进行连接,检测煤钻杆的抗扭矩状态；并将检测到煤钻杆的状态数据发送至控制台进行故障分析。本方案通过对煤钻杆轴向推力和旋转扭矩进行加载,使得煤钻杆在轴向推力作用下进行抗扭矩,并将扭矩状态实时进行检测和故障分析,大大提高了装置的可靠性。(The invention discloses a coal drill rod anti-torque testing device and a method, comprising a coal drill rod, a console, a power device, an axial force application device, a torque and rotating speed testing device and a loading device; the console is in driving connection with a power device; the power device is characterized in that the axial force application device is sequentially connected with one end of the coal drill rod, and the console control power device applies torque force to the coal drill rod through the axial force application device; the other end of the coal drill rod is connected with a loading device, the loading device applies torque to the coal drill rod, and the coal drill rod is enabled to generate anti-torque along with the power device through an axial force application device; the torque and rotation speed testing device is connected with the coal drill rod and used for detecting the anti-torque state of the coal drill rod; and sending the detected state data of the coal drill pipe to a console for fault analysis. The coal drill rod is loaded by the axial thrust and the rotating torque of the coal drill rod, so that the coal drill rod resists torque under the action of the axial thrust, the torque state is detected and analyzed in real time, and the reliability of the device is greatly improved.)

1. A coal drill rod anti-torque testing device comprises a coal drill rod; the device is characterized by also comprising a console, a power device, an axial force application device, a torque and rotating speed testing device and a loading device; the console is in driving connection with a power device; the power device, the axial force application device and one end of the coal drill rod are sequentially connected, and the console control power device applies torque force to the coal drill rod through the axial force application device; the other end of the coal drill rod is connected with a loading device, the loading device applies torque to the coal drill rod, and the coal drill rod generates anti-torque along with the power device through an axial force application device; the torque and rotation speed testing device is connected with the coal drill rod, and detects the anti-torque state of the coal drill rod in real time; the torque and rotating speed testing device is connected with the control console, and the detected state data of the coal drill rod is sent to the control console to perform fault analysis on the coal drill rod.

2. The coal drill rod anti-torque testing device as claimed in claim 1, wherein the power device, the axial force application device, the coal drill rod, the torque rotating speed testing device and the loading device are arranged on the fixed rack and the center height of the loading device is kept consistent.

3. The coal drill rod anti-torque testing device as recited in claim 1, wherein the power plant comprises a variable frequency motor, a frequency converter; the frequency converter is connected with the variable frequency motor, and the input frequency of the variable frequency motor is adjusted through the frequency converter.

4. The coal drill rod anti-torque testing device as recited in claim 1, wherein the axial force application device comprises a first shaft and a first angular contact ball bearing; one end of the left shaft is connected with the variable frequency motor, the other end of the left shaft is connected with the first angular contact ball bearing, the left shaft is sequentially driven to rotate through the variable frequency motor, the left shaft drives the coal drill rod to carry out torque through the angular contact ball bearing, and the coal drill rod is in a rotating torque state.

5. The coal drill rod anti-torque testing device as recited in claim 1, wherein the axial force application device further comprises a connecting disc, a force application bolt, a force application plate, a tension and pressure sensor; one end of the left shaft is connected with the variable frequency motor, and the other end of the left shaft penetrates through the connecting disc and the stressing plate in sequence without contact and is connected with the first angular contact ball bearing; the force application bolt is placed inside the connecting disc; the feeding amount of the coal drill rod on the left shaft is adjusted through the screw rod, the axial force is applied to the left shaft, and the axial force is transmitted to the coal drill rod through the stressing plate, the tension pressure sensor and the first angular contact ball bearing in sequence, so that the coal drill rod is in an axial thrust state.

6. The coal drill pipe anti-torque testing device as claimed in claim 1, wherein the loading device comprises a magnetic powder brake, a current regulator; the current regulator is connected with the console, and the current regulator is connected with the magnetic powder brake in a matching way; the magnetic powder brake is connected with the coal drill rod; the magnetic powder brake provides torque for the coal drill rod by adjusting the current regulator through the console.

7. The coal drill rod anti-torque testing device as recited in claim 1, wherein the torque and rotation speed testing device comprises a torque and rotation speed sensor, a connecting flange, a right shaft, a second bearing seat and a second angular contact ball bearing; one end of the right shaft penetrates through the flange, the torque and rotation speed sensor is connected with the magnetic powder brake, and the other end of the right shaft is connected with the second angular contact ball bearing; the second angular contact ball bearing is connected with the coal drill rod; the torque and rotation speed sensor is connected with the control console, the detected anti-torque data of the coal drill rod are transmitted to the control console, and the control console performs fault analysis on the anti-torque data.

8. A test method of a coal drill rod anti-torque test device; it is characterized by comprising:

loading axial thrust and rotation torque on two ends of the coal drill rod respectively to enable the coal drill rod to be in a torque-resistant state under the action of the axial thrust;

meanwhile, data of the coal drill rod in a torque resisting state under the action of axial thrust are collected, signals are formed and sent to the console;

the console analyzes and judges the collected data.

9. The testing method of the coal drill rod anti-torque testing device as claimed in claim 8, wherein the data of the coal drill rod under the axial thrust action in the anti-torque state is collected through a sensor.

10. The testing method of the coal drill rod anti-torque testing device according to claim 8, wherein the console calculates data through the calculation module, can analyze the data in the coal drill rod torque state, and can judge the coal drill rod deformation and fracture failure.

Technical Field

The invention relates to the technical field of testing equipment, in particular to a coal drill rod anti-torque testing device and method.

Background

The coal drilling rod runs in a use environment where high-speed rotation is carried out and axial thrust and rotation torque are applied, deformation and fracture faults are prone to occurring, the coal drilling rod can be suitable for the use environment where high-speed rotation is carried out under a mine and axial thrust and rotation torque are applied, deformation and fracture caused by the axial thrust and the rotation torque are avoided, the coal drilling rod is guaranteed not to deform and break under the working state, and anti-torque detection needs to be carried out on the coal drilling rod.

At present, related test equipment only carries out anti-torque detection on a coal drill rod at a rated rotating speed, can not simulate the dual influence of axial thrust and rotating torque on the coal drill rod, and the anti-torque detection without the axial thrust in the test is far away from the actual working condition, so that the actual use state of the coal drill rod cannot be measured.

Therefore, how to improve the reliability of the coal drill rod torque resistance testing device is a problem to be solved in the field.

Disclosure of Invention

Aiming at the technical problem that the existing coal drill rod anti-torque testing device is low in reliability, the invention aims to provide the coal drill rod anti-torque testing device, which enables a coal drill rod to resist torque under the action of axial thrust by loading the axial thrust and the rotation torque of the coal drill rod, and detects and analyzes the state of the coal drill rod anti-torque in real time, so that the reliability of the coal drill rod anti-torque testing device is greatly improved.

In order to achieve the aim, the coal drill rod anti-torque testing device provided by the invention comprises a coal drill rod, a control console, a power device, an axial force application device, a torque and rotating speed testing device and a loading device; the console is in driving connection with a power device; the power device, the axial force application device and one end of the coal drill rod are sequentially connected, and the console control power device applies torque force to the coal drill rod through the axial force application device; the other end of the coal drill rod is connected with a loading device, the loading device applies torque to the coal drill rod, and the coal drill rod generates anti-torque along with the power device through an axial force application device; the torque and rotation speed testing device is connected with the coal drill rod, and detects the anti-torque state of the coal drill rod in real time; the torque and rotating speed testing device is connected with the control console, and the detected state data of the coal drill rod is sent to the control console to perform fault analysis on the coal drill rod.

Furthermore, the power device, the axial force application device, the coal drill rod, the torque and rotating speed testing device and the loading device are arranged on the fixed rack, and the center heights of the loading device and the fixed rack are kept consistent.

Further, the power device comprises a variable frequency motor and a frequency converter; the frequency converter is connected with the variable frequency motor, and the input frequency of the variable frequency motor is adjusted through the frequency converter.

Further, the axial force application device comprises a first shaft and a first angular contact ball bearing; one end of the left shaft is connected with the variable frequency motor, the other end of the left shaft is connected with the first angular contact ball bearing, the left shaft is sequentially driven to rotate through the variable frequency motor, the left shaft drives the coal drill rod to carry out torque through the angular contact ball bearing, and the coal drill rod is in a rotating torque state.

Furthermore, the axial force application device also comprises a connecting disc, a force application bolt, a force application plate and a tension pressure sensor; one end of the left shaft is connected with the variable frequency motor, and the other end of the left shaft penetrates through the connecting disc and the stressing plate in sequence without contact and is connected with the first angular contact ball bearing; the force application bolt is placed inside the connecting disc; the feeding amount of the coal drill rod on the left shaft is adjusted through the screw rod, the axial force is applied to the left shaft, and the axial force is transmitted to the coal drill rod through the stressing plate, the tension pressure sensor and the first angular contact ball bearing in sequence, so that the coal drill rod is in an axial thrust state.

Further, the loading device comprises a magnetic powder brake and a current regulator; the current regulator is connected with the console, and the current regulator is connected with the magnetic powder brake in a matching way; the magnetic powder brake is connected with the coal drill rod; the magnetic powder brake provides torque for the coal drill rod by adjusting the current regulator through the console.

Further, the torque and rotation speed testing device comprises a torque and rotation speed sensor, a connecting flange, a right shaft, a second bearing seat and a second angular contact ball bearing; one end of the right shaft penetrates through the flange, the torque and rotation speed sensor is connected with the magnetic powder brake, and the other end of the right shaft is connected with the second angular contact ball bearing; the second angular contact ball bearing is connected with the coal drill rod; the torque and rotation speed sensor is connected with the control console, the detected anti-torque data of the coal drill rod are transmitted to the control console, and the control console performs fault analysis on the anti-torque data.

In order to achieve the aim, the invention provides a testing method of a coal drill rod anti-torque testing device; the method comprises the following steps:

loading axial thrust and rotation torque on two ends of the coal drill rod respectively to enable the coal drill rod to be in a torque-resistant state under the action of the axial thrust;

meanwhile, data of the coal drill rod in a torque resisting state under the action of axial thrust are collected, signals are formed and sent to the console;

the console analyzes and judges the collected data.

Further, data of the coal drill rod in a torque resisting state under the action of axial thrust are collected through a sensor.

Furthermore, the console calculates the data through the calculation module, can analyze the data in the torsion state of the coal drill rod, and can judge the deformation and fracture faults of the coal drill rod.

According to the coal drill rod anti-torque testing device provided by the invention, the coal drill rod is subjected to anti-torque under the action of the axial thrust by loading the axial thrust and the rotation torque of the coal drill rod, the dual effects of the axial thrust and the rotation torque on the coal drill rod can be simulated, and meanwhile, the anti-torque state of the coal drill rod is detected and subjected to fault analysis in real time, so that the reliability of the device is greatly improved.

Drawings

The invention is further described below in conjunction with the appended drawings and the detailed description.

Fig. 1 is a schematic view of the overall structure of the coal drill rod anti-torque testing device.

The following are labeled descriptions of the components in the drawings:

100. the coal-fired power unit 200, the axial force application device 300, the torque and rotation speed testing device 400, the loading device 500, the fixed rack 600, the coal drill rod 700, the console 110, the variable frequency motor 210, the left connecting disc 220, the force application bolt 230, the left shaft 240, the left and right stress plates 250, the bolt 260, the pull pressure sensor 270, the bearing left end stress plate 280, the first angular contact ball bearing 281, the first bearing seat 290, the first replacement joint 310, the torque and rotation speed sensor 320, the connecting flange 330, the right shaft 340, the second bearing seat 350, the second angular contact ball bearing 360, the second replacement joint 410, the magnetic powder brake

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Aiming at the problem that the existing coal drill rod anti-torque testing device only performs an anti-torque test on the coal drill rod at a rated rotating speed and cannot simulate the double effects of axial thrust and rotating torque on the coal drill rod, so that the actual use state of the coal drill rod cannot be measured; therefore, the coal drill rod anti-torque testing device can simulate the dual effects of axial thrust and rotation torque on the coal drill rod, and the reliability of the device is further improved.

The coal drill rod anti-torque testing device provided by the scheme is shown in fig. 1 and comprises a control console 700, a power device 100, an axial force application device 200, a torque and rotation speed testing device 300, a loading device 400, a fixed rack 500 and a coal drill rod 600.

Wherein, the console 700 controls the power device 100 to apply torque force to the coal drill rod 600 through the axial force application device 200; the loading device 400 applies torque to the coal drill rod 600 and enables the coal drill rod 600 to follow the power device 100 through the axial force application device 200 to generate anti-torque; the torque and rotation speed testing device 300 detects the rotation speed and the torque of the coal drill rod 600 in real time.

Further, the fixed rack 500 is a platform structure, which is an installation body, and is specifically used for installing the power device 100, the axial force application device 200, the coal drill rod 600, the torque and rotation speed testing device 300, and the loading device 400; the central height among the respective components is maintained to be uniform by the fixed installation with the stationary gantry 500.

The specific structure of the fixing rack 500 is not limited herein, and may be other structures, such as a vertical structure, a left-right structure, and the like, as long as the power device 100, the axial force application device 200, the torque and rotation speed testing device 300, the loading device 400, and the coal drill rod 600 can be installed, and detailed descriptions thereof will not be repeated.

The power device 100 is arranged on the fixed rack 500, an internal spline is arranged on the power device, an external spline is arranged on a left shaft of the axial force application device 200, the power device is in key connection with the external spline of the axial force application device 200 through the internal spline on the power device 100, and power can be transmitted to the axial force application device 200 through the key connection; the power device 100 is composed of a variable frequency motor 110 and a variable frequency device.

The frequency converter is connected with the variable frequency motor 100 and used for adjusting the input frequency of the variable frequency motor 100; wherein, the preferred 18kW variable frequency speed governing motor that adopts of variable frequency motor 100 in this scheme, 22kW/660V are used to the converter, through adopting variable frequency motor 100 and the converter of output power difference to match each other, can improve the stability of power device when using greatly.

The power device 100 can provide any adjustment range of (0-1500) r/min and any power of (0-18) KW.

The axial force application device 200 is arranged on the fixed rack 500, one end of the axial force application device is in key connection with the power device 100, and the other end of the axial force application device is connected with the coal drill rod 600; the axial force application device 200 is used for transmitting the power of the power device 100 to the coal drill rod 600 and driving the coal drill rod 600 to rotate.

The axial force application device 200 includes a left connection plate 210, a force application bolt 220, a left shaft 230, a left and right force application plate 240, a tension and pressure sensor 260, a bearing left end force application plate 270, and a first angular contact ball bearing 280.

Specifically, the left shaft 230 passes through the center of the left connecting disc 210, the force application bolt 220, the left and right force application plates 240, the tension and pressure sensor 260 and the bearing seat end force application plate 270, one end of the left shaft 230 is connected with the variable frequency motor 110 through an external spline, and the other end of the left shaft is connected with the inner ring of the first angular contact ball bearing 280 through interference fit; the first angular contact ball bearing 280 is connected to the left end of the coal drill pipe by a first replacement joint 290.

The left shaft 230 is sequentially driven to rotate by the variable frequency motor 110, and the coal drill pipe 600 is driven to be torqued by the left shaft 230 through the first angular contact ball bearing 280, so that the torqued state of the coal drill pipe 600 is completed.

Here, the left shaft 230 passes through the left connection disc 210, the force application bolt 220, the left and right force application plates 240, the tension and pressure sensor 260, and the bearing seat end force application plate 270 without contact, and the non-contact passing can ensure that only the inner ring of the first angular contact ball bearing 280 is forced to rotate and other components are fixed when the left shaft 230 rotates along with the frequency conversion motor 110.

Further, a force application bolt 220 is placed inside the left connecting disc 210, and the left end of the force application bolt 220 can be adjusted on the left shaft 230 through a lead screw to achieve the feeding amount; the right end of the force application bolt 220 is in contact connection with the left and right force application plates 240; the left and right gusset plates 240 are connected with the tension and pressure sensor 260 in a fitting manner.

The force applying bolt 220 can rotate on the left shaft 230 by adjusting the force applying amount of the force applying bolt 220 on the left shaft 230 at a constant speed through the lead screw, that is, the force applying bolt 220 is adjusted to apply axial thrust to the left shaft 230 by rotating on the left shaft 230, and the axial force is applied to the left end of the pulling pressure sensor 260 through the left and right force applying plates 240.

The bearing left end forcing plate 270 is connected with the first angular contact ball bearing 280 in a matching manner; the pull pressure sensor 260 applies an axial force to the outer race of the first angular contact ball bearing 280 through the bearing left end gusset 270.

Further, the first angular contact ball bearing 280 is disposed on the stationary stage 500 through the first bearing seat 281, and at the same time, the left connecting plate 210, the left and right gussets 240, and the first bearing seat 281 are fixed together through the three bolts 250, and function to receive the axial force.

The first angular contact ball bearing 280 is connected to the left end of the coal drill pipe by providing a first replacement joint 290 to transmit an axial force to the coal drill pipe 600.

Therefore, the axial force application device formed by the above components can apply axial thrust to the left shaft 230 by adjusting the feeding amount of the force application bolt 220 on the left shaft 230 at a constant speed through the lead screw, and sequentially transmit the axial force to the left and right force application plates 240, the tension and pressure sensor 260, the bearing left end force application plate 270, the first corner contact ball bearing 280 and the coal drill rod 600, so as to complete the working state of the coal drill rod 600 under the axial force.

Secondly, the axial force application device 200 can also drive the main shaft 230 to rotate through the frequency conversion motor 110 by matching with the power device 100, and sequentially drive the first angular contact ball bearing 280 and the coal drill rod 600 to rotate, so as to complete the state of the coal drill rod torque.

The axial force application device 200 can provide a load in an adjustment range of (0-200) kN.

The loading device 400 is disposed at the other end of the fixed gantry 500, and is used for providing a suitable torque to the coal drill rod 600, and the coal drill rod 600, which is matched with the power device 100 and forms an axial thrust through the axial force application device 500, follows the power device 100 to generate a torque resistance.

The loading device 400 includes a magnetic particle brake 410, a current regulator; wherein, the current regulator is connected with the console 700, and the current regulator is connected with the magnetic powder brake 410 in a matching way; the magnetic particle brake 410 is connected to the coal drill rod 600. The current regulator is adjusted by the console 700, so that the magnetic particle brake 410 provides the coal drill rod 600 with proper torque, the coal drill rod 600 is in a torque resisting state by the magnetic particle brake 410 under the torque driven by the left shaft 230, and the rotation speed and the torque born by the coal drill rod 600 are automatically recorded and transmitted to the console 700.

The torque and rotation speed testing device 300 is a measurement and control center of the whole testing device and is used for testing the rotation speed and the torque of the coal drill rod 600; the torque and rotation speed testing device 300 comprises a torque and rotation speed sensor 310, a connecting flange 320, a right shaft 330, a second bearing seat 340, a second angular contact ball bearing 350 and a second replacement joint 360.

Specifically, one end of the right shaft 330 penetrates through the flange 320, the torque and rotation speed sensor 310 is connected with the magnetic powder brake 410, the torque and rotation speed sensor 310 can detect the anti-torque state of the coal drill pipe 600 to be tested in real time, and sends a detected digital signal to the console 700 for fault analysis of the coal drill pipe 600.

The other end of the right shaft 330 is connected with the inner ring of the second angular contact ball bearing 350 through interference fit; the second angular contact ball bearing 350 is connected with the right end of the coal drill rod 600 by arranging a second replacement joint 360; the second angular ball bearing 350 is disposed on the stationary stage 500 through the second bearing housing 340.

When the right shaft 330 bears the axial thrust of the coal drill rod 600, the axial force is transmitted to the outer ring through the inner ring of the second angular contact ball bearing 350, and the problem that the torque and speed sensor 310 cannot bear the axial force is solved by utilizing the stress of the second bearing seat 340 and the connecting flange 320.

The torque/rotation speed testing device 300 can display (0-6000) r/min rotation speed and (0-50) Nm torque.

The working process of the scheme in use is illustrated below; it should be noted that the following description is only a specific application example of the present solution and is not intended to limit the present solution.

First, one end of the axial force application device 200 is connected to the power device 100, and the other end is connected to the coal drill rod 600. One end of the torque and rotation speed testing device 300 is connected with the loading device 400, and the other end is connected with the coal drilling rod 600. The above-mentioned equipment is arranged on the fixed stand 500, the center heights of all the components are kept consistent, and the test run is carried out, so that abnormal left-right swinging and up-down shaking cannot occur.

The feed amount of the force application bolt 220 on the left shaft 230 is adjusted at a constant speed through the lead screw, and a certain pushing force is formed on the coal drill rod 600 through the pulling pressure sensor 260.

The control console 700 controls the variable frequency motor 110 to drive the left shaft 230 to drive the coal drill rod 600 to operate; meanwhile, the current regulator is regulated through the console 700, so that the magnetic powder brake 410 provides proper torque for the coal drill rod 600, the coal drill rod 600 is in a torque-resistant state, and the rotating speed and the torque borne by the coal drill rod 600 are automatically recorded; in the process, the tension and pressure sensor 260 detects the axial thrust in the rotation process in real time and feeds the axial thrust back to the console 700, the console 700 sends an instruction to the variable frequency motor 110 to change the speed according to the real-time axial thrust data, and the fluctuation range of the axial thrust is controlled to be less than 4% -6%.

In addition, in the anti-torque test process, the torque and rotation speed sensor 310 can detect the anti-torque state of the coal drill pipe to be tested in real time and send the detected digital signals to the control console 700, and the control console 700 is internally provided with a digital calculation model, so that the fault analysis can be performed on the coal drill pipe 600, the deformation and fracture faults of the coal drill pipe can be automatically judged, and the result is output.

The coal drill rod anti-torque testing device formed by the scheme has the advantages of compact structure, convenience in use, and dual functions of axial thrust and torque, effectively simulates the anti-torque environment of the coal drill rod under certain axial thrust, detects the torque, the axial thrust, deformation and fracture faults of the coal drill rod, and greatly improves the reliability of the coal drill rod anti-torque testing device.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.