A drilling rig testing device for coal mines

Abstract

The application relates to a drilling rig testing device for a coal mine, which comprises a power head testing device, a transmission main shaft, a sensor and a magnetic powder brake arranged in sequence, the power head testing device comprises a frame body, the transmission main shaft is arranged on a transmission main shaft support frame, the sensor is arranged on a sensor support frame, and the magnetic powder brake is arranged on a brake support frame; the front end of the transmission main shaft is connected with a drill rod joint, the drill rod joint is connected with a locking device, the rear end of the transmission main shaft is connected with the front end of the sensor through a first coupling, and the rear end of the sensor is connected with the magnetic powder brake through a second coupling. The integrated testing device of the torque, the tension and the rotating speed of the drill rod of the drilling rig can be realized through the replacement of simple components, the testing cost is saved, and the testing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drilling rig testing, in particular to a coal mine drilling rig testing device. BACKGROUND

[0002] With the rapid development of China's coal industry, the manufacturing industry of coal mine drilling rig is also developing and constantly seeking improvement. At present, the testing device for drilling rig in the industry is mostly a machine testing one item, such as torque, rotation speed, push-pull pressure, etc. Each item is tested by a separate testing instrument. The rigidity and strength of the drilling rod are not only single data, but also a combination of multiple data. Each drilling rod needs to be tested before it can be put into use. However, due to the separate testing of each item, a large amount of time, manpower and production cost is required. Therefore, the current market for drilling rig testing is not very rigorous and accurate, and often only one item of data is tested to determine the eligibility of the drilling rig, resulting in uneven product quality and inaccurate service life of the drilling rod, which greatly affects the development of the industry. Therefore, there is an urgent need for a comprehensive coal mine drilling rig testing device. SUMMARY

[0003] The purpose of the present application is to overcome the above-mentioned shortcomings, and to provide a coal mine drilling rig testing device, which saves testing time and testing cost, and improves testing efficiency.

[0004] The purpose of the present application is achieved as follows:

[0005] A coal mine drilling rig testing device, comprising a power head testing device, a transmission main shaft, a sensor and a magnetic powder brake arranged in sequence. The power head testing device comprises a frame body. The transmission main shaft is arranged on a transmission main shaft support frame. The sensor is arranged on a sensor support frame. The magnetic powder brake is arranged on a brake support frame.

[0006] The power head testing device further comprises a power head arranged in the frame body. A main shaft is arranged in the power head. A test drill rod is inserted into the inner cavity of the main shaft. A chuck is connected to the power head. A reversing arm is arranged behind the chuck. The reversing arm comprises an integral annular ring and a V-shaped plate arranged on the annular ring. The annular ring and the chuck are arranged on the same central shaft and are used for extending the test drill rod. The V-shaped plate is arranged above the two side plates of the frame body and is in an obtuse angle V shape. A propelling oil cylinder is arranged below the power head. A guide rod is arranged on each side of the propelling oil cylinder. The output shaft of the propelling oil cylinder is connected to the power head. The front end of the transmission main shaft is connected to a drill rod joint. The drill rod joint is connected to a locking device. The rear end of the transmission main shaft is connected to the front end of the sensor through a first coupling. The rear end of the sensor is connected to the magnetic powder brake through a second coupling.

[0007] Preferably, the frame body, transmission main shaft support frame, sensor support frame and brake support frame are sequentially arranged on the support platform.

[0008] Preferably, the bottom end of the two side plates of the V-shaped plate of the turnover arm is provided with a backing plate for buffering when contacting the side plate of the frame body.

[0009] Preferably, the output shaft of the push oil cylinder is connected with a mounting seat, and the mounting seat is provided with a power head.

[0010] Preferably, the face plate and the back plate of the frame body are both provided with a through hole for the test drill rod to pass through.

[0011] Preferably, a test cushion block is inserted into the through hole on the back plate of the frame body, and the test cushion block is provided with a through hole for the test drill rod to extend out.

[0012] Compared with the prior art, the present application has the following beneficial effects:

[0013] In the present application, the chuck end face of the power head is provided with a coaxial turnover arm, which is equivalent to being sleeved on the test drill rod, and the torque of the test drill rod is limited by the rotation of the turnover arm. The push-pull cylinder connected below the power head can test the push-pull force. By replacing the simple components such as the turnover arm and the sensor, an integrated test device for the torque, tension and rotational speed of the drill rig drill rod can be realized. The rigidity and strength of the drill rod can be obtained from these data, so that the service life of the drill rod can be known, the test time is greatly saved, the test cost is saved, and the test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the present application.

[0015] Figure 2 It is a front view of the present application.

[0016] Figure 3 It is a top view of the power head test device of the present application.

[0017] Figure 4 It is a side view of the power head test device of the present application.

[0018] Among them:

[0019] Power head test device 1, frame body 1.1, power head 1.2, chuck 1.3, turnover arm 1.4, push oil cylinder 1.5, guide rod 1.6, test cushion block 1.7, test drill rod 2, locking device 3, drill rod joint 4, transmission main shaft 5, transmission main shaft support frame 6, first coupling 7, sensor 8, second coupling 9, sensor support frame 10, magnetic powder brake 11, brake support frame 12, support platform 13. Embodiments

[0020] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with relevant drawings. It should be understood that the following specific examples are not intended to limit the specific implementation manners of the technical solutions of the present application, and are only implementation manners that can be adopted by the technical solutions of the present application. It should be noted that the expressions about the positional relationship of each component in this paper, such as A component is located above B component, are based on the expressions about the relative position of each component in the drawings, and are not intended to limit the actual positional relationship of each component. Embodiments

[0021] Reference Figures 1-4 , Figure 1 A structural schematic diagram of a drilling rig test device for coal mine is drawn. As shown in the figure, the drilling rig test device for coal mine of the present application comprises a power head test device 1, a transmission main shaft 5, a sensor 8 and a magnetic powder brake 11 which are sequentially arranged on a support platform 13. The power head test device 1 comprises a frame body 1.1. The transmission main shaft 5 is arranged on a transmission main shaft support frame 6. The sensor 8 is arranged on a sensor support frame 10. The magnetic powder brake 11 is arranged on a brake support frame 12. The frame body 1.1, the transmission main shaft support frame 6, the sensor support frame 10 and the brake support frame 12 are sequentially arranged on the support platform 13.

[0022] The power head test device 1 further comprises a power head 1.2 arranged in the frame body 1.1. A main shaft is arranged in the power head 1.2. A test drill rod 2 is inserted into the inner cavity of the main shaft. The power head 1.2 is connected with a chuck 1.3. A turnover arm 1.4 is arranged behind the chuck 1.3. The turnover arm 1.4 comprises an integrally formed circular ring and a V-shaped plate arranged on the circular ring. The circular ring is on the same central axis as the chuck 1.3 and is used for the test drill rod 2 to extend out. The V-shaped plate is obtuse-angled V-shaped and is arranged above the two side plates of the frame body 1.1. The bottom end of the two side plates of the V-shaped plate is provided with a pad plate for buffering when contacting with the side plates of the frame body 1.1. A pushing oil cylinder 1.5 is arranged below the power head 1.2. A guide rod 1.6 is arranged on each side of the pushing oil cylinder 1.5. The output shaft of the pushing oil cylinder 1.5 is connected with a mounting seat on which the power head 1.2 is arranged. Thus, the pushing oil cylinder 1.5 can push the power head 1.2 for testing the pushing and pulling force thereof.

[0023] Through holes for the test drill rod 2 to extend through are arranged on the face plate and the back plate of the frame body 1.1. A test pad 1.7 is inserted into the through hole on the back plate. A through hole is arranged in the test pad 1.7 for the test drill rod 2 to extend out. The purpose of arranging the test pad 1.7 is to prevent the through hole of the frame body 1.1 from affecting the rotation of the test drill rod 2.

[0024] The front end of the transmission main shaft 5 is connected with a drill rod joint 4, the drill rod joint 4 is connected with a locking device 3, the locking device 3 is fixedly connected with the drill rod joint 4 through bolts, the rear end of the transmission main shaft 5 is connected with the front end of a sensor 8 through a first coupling 7, and the rear end of the sensor 8 is connected with a magnetic powder brake 11 through a second coupling 9.

[0025] Working principle:

[0026] I. Rotational torque test

[0027] First, the test drill rod is inserted into the inner cavity of the main shaft from the rear end of the power head, and extends to the locking device, the hydraulic chuck at the front end of the power head and the locking device are simultaneously clamped (locked) to the drill rod; then the magnetic powder brake is started, so that the test device enters the working state; then the hydraulic motor of the power head is connected with the required test pressure oil, so that the main shaft of the power head rotates, since the overturning arm is in an obtuse angle V-shaped, the rotation angle is limited, when the overturning arm rotates to a certain angle, the overturning arm is limited by the two side frame plates of the frame body and cannot rotate, when the pressure rises to the rated value, that is, the rotational torque reaches the maximum value; the braking torque of the magnetic powder brake is transmitted to the display through the sensor, so that the maximum value of the rotational torque can be read out.

[0028] II. Conventional torque and speed test

[0029] The overturning arm is not installed, the test torque is slowly increased by the magnetic powder brake, this process is very stable, and various parameters of the drilling machine such as the maximum and minimum torque and the speed and change at the moment can be easily detected through the speed and torque sensor.

[0030] III. Simulation of field damage test

[0031] The overturning arm is installed, only one set of device in the frame body is needed, without being connected to the transmission main shaft support frame, the speed and torque sensor, and the magnetic powder brake, the experimental pad is replaced with a weighing sensor, so that the test of the push-pull force can be carried out; if the push-pull force is not needed to be tested and only the damage experiment is needed, the thrust bearing can be replaced, the power head is subjected to the push-pull force in the process of the damage experiment, and the torque is suddenly changed at the maximum positive torque, the no-load and the maximum negative torque.

[0032] The above is only a specific application example of the present application, and does not constitute any limitation on the protection scope of the present application. Any technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present application.

Claims

1. A drilling rig testing device for coal mines, characterised in that: It includes power head testing device (1), transmission main shaft (5), sensor (8) and magnetic powder brake (11) arranged in sequence, the power head testing device (1) includes frame body (1.1), the transmission main shaft (5) is arranged on transmission main shaft support frame (6), the sensor (8) is arranged on sensor support frame (10), and the magnetic powder brake (11) is arranged on brake support frame (12); The power head testing device 1 further includes a power head (1.2) arranged in the frame body (1.1), the power head (1.2) is provided with a main shaft, a test drill rod (2) is inserted into the inner cavity of the main shaft, the power head (1.2) is connected with a chuck (1.3), a turnover arm (1.4) is arranged at the rear of the chuck (1.3), the turnover arm (1.4) includes an integral annular ring and a V-shaped plate arranged on the annular ring, the annular ring is on the same central axis as the chuck (1.3) and is used for the test drill rod (2) to extend out, the V-shaped plate is obtuse V-shaped and is arranged above the two side plates of the frame body (1.1); a propelling oil cylinder (1.5) is arranged below the power head (1.2), a guide rod (1.6) is arranged on each side of the propelling oil cylinder (1.5), and the output shaft of the propelling oil cylinder (1.5) is connected with the power head (1.2); the front end of the transmission main shaft (5) is connected with a drill rod joint (4), the drill rod joint (4) is connected with a locking device (3), the rear end of the transmission main shaft (5) is connected with the front end of the sensor (8) through a first coupling (7), and the rear end of the sensor (8) is connected with the magnetic powder brake (11) through a second coupling (9); The face plate and the back plate of the frame body (1.1) are both provided with through holes for the test drill rod (2) to extend through; the test drill rod (2) extends through the through hole in the back plate of the frame body (1.1) and inserts into a test cushion block (1.7), and the test cushion block (1.7) is provided with a through hole for the test drill rod (2) to extend out.

2. The drilling rig testing device for coal mine of claim 1, wherein: The frame body (1.1), the transmission main shaft support frame (6), the sensor support frame (10) and the brake support frame (12) are sequentially arranged on a support platform (13).

3. The drilling rig testing device for coal mine of claim 1, wherein: The bottom end of each side plate of the V-shaped plate of the turnover arm (1.4) is provided with a cushion plate for buffering when contacting the side plate of the frame body (1.1).

4. The drilling rig testing device for coal mine of claim 1, wherein: The output shaft of the propelling oil cylinder (1.5) is connected with a mounting seat, and the mounting seat is provided with the power head (1.2).

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