A push-pull force testing device for a drift drill

Abstract

The application discloses a push-pull force testing device of a drift drill, which comprises a rack, a testing device and an adjusting device; the rack is fixedly connected with the drift drill; the testing device and the adjusting device for adjusting the angle of the testing device are both mounted on the rack; the testing device is fixedly connected with the drill rod of the drift drill; the fixed relationship among the drift drill, the rack and the testing device is formed, the push-pull force is converted into the internal force between the drift drill and the testing device, the influence of external force is reduced, and the cost is reduced when the testing device is used.

Description

Technical Field

[0001] This invention relates to a testing device for drilling rigs, and more particularly to a pushing and pulling force testing device for tunnel drilling rigs. Background Technology

[0002] Tunnel drilling rigs are mainly suitable for drilling gas drainage holes, water drainage holes, other engineering holes and branch holes in coal (rock) seams in deep coal mines. They are suitable for water exploration and drainage in mining faces and drilling in high-gas locations.

[0003] During construction, tunnel drilling rigs are tilted, meaning they are at an angle to the ground via their front and rear support legs. The power head of the rig applies a thrust to the drill rod, moving it forward to complete the drilling operation. Depending on the product model, the required thrust varies. During product testing, it is necessary to measure the actual thrust generated by the product to determine if it meets the design requirements. Therefore, conducting thrust-pull force testing on tunnel drilling rigs has become a necessary procedure.

[0004] However, the applicant's research revealed the following problems with the current methods and techniques for testing the push-pull force of tunnel drilling rigs: 1. As the product model increases, the push-pull force of the tunnel drilling rig also increases. Currently, a fixed push-pull force testing device is required, necessitating the pouring of a large amount of concrete to ensure the required push-pull force, resulting in high costs; 2. The docking accuracy requirements between the tunnel drilling rig and the push-pull force testing device are high. The drill rod of the tunnel drilling rig has a 15° angle difference with the horizontal line during operation. The existing testing device is fixed in one place, making it difficult to align the drill rod of the tunnel drilling rig with the testing device. The position of the tunnel drilling rig needs to be constantly adjusted to ensure accurate testing, resulting in long docking time and low labor efficiency during the testing process; 3. Due to the structural reasons of the testing device, additional torque is easily generated during the push-pull force test, causing a reduction in the accuracy of the push-pull force. Summary of the Invention

[0005] Purpose of the invention: The purpose of this invention is to provide a tunnel drilling rig push-pull force testing device that improves testing efficiency.

[0006] Technical solution: The present invention provides a push-pull force testing device for a tunnel drilling rig, comprising a frame, a testing device, and an adjustment device; the frame is fixedly connected to the tunnel drilling rig; the testing device and the adjustment device for adjusting the angle of the testing device are both mounted on the frame; the testing device is fixedly connected to the drill rod of the tunnel drilling rig.

[0007] Furthermore, the testing device includes: a ball joint groove, a rotating ball, a ball joint cover, and a push-pull force sensor; the ball joint groove is fixedly mounted on the frame, the rotating ball is provided with a ball rod, the ball joint cover passes through the ball rod to install the rotating ball in the ball joint groove, one side of the push-pull force sensor is fixedly connected to the rotating ball and the other side is provided with a connector; the connector is fixedly connected to the push-pull force sensor; the connector is provided with a mating nut and a mating bolt, the other end of the mating bolt is connected to a mating part; the mating part is fixedly mounted on the end of the drill rod.

[0008] Furthermore, the ball joint cover and the ball joint groove are fixedly connected by fixing bolts and fixing nuts, and an anti-loosening washer is provided between the fixing nut and the fixing bolt.

[0009] Furthermore, the push-pull force sensor is sleeved on the cue stick and one side abuts against the rotating ball, while the other side is provided with a locking nut for pressing the push-pull force sensor and the rotating ball; the connector is covered on the locking nut and is fixedly connected to the push-pull force sensor by bolts.

[0010] Furthermore, the adjustment device includes a fixed bucket and an adjustment rod; the fixed bucket is fixedly connected to the frame and has a bucket cover at the top; the adjustment rod is fixedly connected from top to bottom to a tray for supporting the test device and a positioning ring for locking the height of the adjustment rod, the adjustment rod is movably placed inside the fixed bucket, and the positioning ring is placed on the bucket cover.

[0011] Furthermore, the adjusting rod is threaded, and the positioning ring is connected to the adjusting rod via the thread; the lower end of the adjusting rod is provided with a pin hole, and the fixed barrel is provided with a vertical sliding groove, through which a pin passes.

[0012] Furthermore, a threaded sleeve is fixedly installed at the lower end of the adjusting rod, and the threaded sleeve is provided with a through hole corresponding to the pin hole.

[0013] Furthermore, multiple ear plates are fixedly installed on the frame, and pull ropes are provided on the ear plates. The pull ropes are fixedly installed on the tunnel drilling rig.

[0014] Furthermore, a fixed frame is fixedly installed on the frame, and the ball joint groove and the fixed barrel are both fixedly installed on the fixed frame; the fixed frame is provided with a horizontal fixed rod, and its other end is fixedly installed on the tunnel drilling rig.

[0015] Working principle: First, install the rotating ball in the ball joint groove, leaving room for rotation; then, fix the push-pull force sensor and connector in sequence, with the connector in contact with the push-pull force sensor surface; make the tunnel drilling rig, testing device, and frame a whole; then, move the tunnel drilling rig onto the frame and adjust it to the working mode; fix the drill rod to the testing device and keep them on the same straight line, then pull the tray up to make it contact the push-pull force sensor, and adjust the position of the push-pull force sensor; then rotate the positioning ring down to contact the bucket cover; finally, turn on the tunnel drilling rig and obtain the push-pull force test results.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0017] 1. This invention establishes a fixed relationship between the tunnel drilling rig, the frame, and the testing device, transforming the pushing and pulling force into the internal force between the tunnel drilling rig and the testing device, thereby reducing the influence of external forces and reducing the cost of constructing the foundation for the testing device.

[0018] 2. The present invention adopts a ball-and-socket structure and adjustment device to adjust the angle of the push-pull force sensor according to the position of the drill rod, which facilitates the docking of the testing device with the drill rod, reduces docking time, and improves debugging efficiency.

[0019] 3. This invention adopts a ball-and-socket structure. When the pushing and pulling force generated by the tunnel drilling rig is applied to the drill rod, due to the high degree of freedom of the ball-and-socket structure and the absence of additional torque, the tested pushing and pulling force is the pushing and pulling force generated by the tunnel drilling rig, which has high accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the test device structure of the present invention;

[0022] Figure 3 This is a cross-sectional structural diagram of the lifting device of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the lifting device of the present invention. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-4As shown, the push-pull force testing device for a tunnel drilling rig of the present invention includes a frame 1, a testing device 2, and an adjustment device 3. The tunnel drilling rig 4 is mounted on the frame 1. Four ear plates 5 are welded around the frame 1. After the tunnel drilling rig 4 moves onto the frame 1, steel wire ropes pass through the four ear plates 5 to fix the tunnel drilling rig 4 to the frame 1. A fixing frame 6 is fixedly mounted on the other side of the frame 1 by bolts. A fixing rod 7 is fixedly connected between the fixing frame 6 and the tunnel drilling rig 4 by bolts. The drill rod 8 of the tunnel drilling rig 4 is detachably mounted on the testing device 2. The testing device 2 and the adjustment device 3 are fixedly mounted on the fixing frame 6. The adjustment device 3 is installed below the testing device 2. The testing device 2 includes: a ball joint groove 201, a rotating ball 202, a ball joint pressure cap 203, and a push-pull force sensor 204 welded and mounted on the fixing frame 6. A ball rod 205 is fixedly connected to the rotating ball 202. The ball joint pressure cap 203 passes through the ball rod 205 to press the rotating ball 202 into the ball joint groove. 201, and the ball joint cap 203 and the ball joint groove 201 are fixed together by bolts 206 and nuts. A washer 207 for anti-loosening is also placed between the bolts 206 and nuts. The rotating ball 202 can rotate freely after being installed in the ball joint cap 203 and the ball joint groove 201. The ball rod 205 is threaded and the diameter of the threaded ball rod 205 is slightly smaller. The push-pull force sensor 204 is sleeved on the ball rod 205 through a through hole. A locking nut 208 is sleeved on the front of the push-pull force sensor 204 and fixes the push-pull force sensor 204 and the rotating ball 202 together. The connecting piece 209 is sleeved on the ball rod 205 and is fixedly connected to the push-pull force sensor 204 by bolts. The end of the drill rod 8 is threaded. The mating piece 401 is fixedly connected to the drill rod 8 by threads. The connecting piece 209 and the mating piece 401 are fixedly connected by bolts 402 and nuts 403, so that the drill rod 8 and the test device 2 are integrated.

[0026] The adjusting device 3 includes a fixed bucket 301, an adjusting rod 302, and a tray 303. The bottom plate 313 of the fixed bucket 301 is fixedly mounted on the fixed frame 6 by bolts. The adjusting rod 302 is threaded and located in the middle of the fixed bucket 301. A bucket cover 304 is provided at the upper end of the fixed bucket 301, and the bucket cover 304 is fixedly connected to the fixed bucket 301 by four evenly distributed bolts 305. The lower end of the adjusting rod 302 is fixedly connected to a threaded sleeve 306, and both the threaded sleeve 306 and the adjusting rod 302 are provided with pin holes. The upper end of the adjusting rod 302 is fixedly connected to a threaded sleeve 306. A positioning ring 307 is connected to a clamping plate fixedly installed below the tray 308. The clamping plate is placed on top of the adjusting rod 302, and a through hole is opened at the position where the clamping plate contacts the adjusting rod 302. A limiting rod 312 is provided in the through hole. Four rotating rods 309 are fixedly installed on the positioning ring 307. The positioning ring 307 is located above the bucket lid 304. A vertical sliding groove 310 is provided on the fixed bucket 301. A pin 311 is placed in the pin hole, and both ends of the pin 311 extend into the sliding groove 310. The tray 308 is located below the push-pull force sensor 204.

Claims

1. A push-pull force testing device for a tunnel drilling rig, characterized in that, It includes a frame (1), a testing device (2) and an adjustment device (3); the frame (1) is fixedly connected to the tunnel drilling rig (4); the testing device (2) and the adjustment device (3) for adjusting the angle of the testing device (2) are both installed on the frame (1); the testing device (2) is fixedly connected to the drill rod (8) of the tunnel drilling rig (4); The testing device (2) includes: a ball joint groove (201), a rotating ball (202), a ball joint cover (203), and a push-pull force sensor (204); the ball joint groove (201) is fixedly installed on the frame (1), the rotating ball (202) is provided with a ball rod (205), the ball joint cover (203) passes through the ball rod (205) to install the rotating ball (202) in the ball joint groove (201), the push-pull force sensor (204) is fixedly connected to the rotating ball (202) on one side and provided with a connector (209) on the other side; the connector (209) is fixedly connected to the push-pull force sensor (204); The adjusting device (3) includes a fixed bucket (301) and an adjusting rod (302); the fixed bucket (301) is fixedly connected to the frame (1) and the upper end of the fixed bucket (301) is provided with a bucket cover (304); the adjusting rod (302) is fixedly connected from top to bottom to a tray (303) for supporting the test device (2) and a positioning ring (307) for locking the height of the adjusting rod (302); the adjusting rod (302) is movably placed inside the fixed bucket (301) and the positioning ring (307) is placed on the bucket cover (304).

2. The push-pull force testing device according to claim 1, characterized in that, The connector (209) is provided with a docking nut (403) and a docking bolt (402). The drill rod (8) is fixedly installed with a docking part (401). The docking part (401) and the connector (209) are fixedly connected by the docking nut (403) and the docking bolt (402).

3. The push-pull force testing device according to claim 2, characterized in that, The ball joint cap (203) and the ball joint groove (201) are fixedly connected by a fixing bolt (206) and a fixing nut. A non-loosening washer (207) is also provided between the fixing nut and the fixing bolt (206).

4. The push-pull force testing device according to claim 3, characterized in that, The push-pull force sensor (204) is sleeved on the cue stick (205) and one side abuts against the rotating ball (202), while the other side is provided with a locking nut (208) for pressing the push-pull force sensor (204) and the rotating ball (202); the locking nut (208) is embedded in the connector (209).

5. The push-pull force testing device according to claim 4, characterized in that, The adjusting rod (302) is threaded, and the positioning ring (307) is connected to the adjusting rod (302) by the thread; the lower end of the adjusting rod (302) is provided with a pin hole, and the fixed barrel (301) is provided with a vertical slide groove (310), and a pin (311) passes through the slide groove (310) and the through hole.

6. The push-pull force testing device according to claim 5, characterized in that, The lower end of the adjusting rod (302) is fixedly installed with a threaded sleeve (306), and the threaded sleeve (306) is provided with a through hole corresponding to the pin hole.

7. The push-pull force testing device according to claim 1, characterized in that, Multiple ear plates (5) are fixedly installed on the frame (1), and pull ropes are provided on the ear plates (5). The pull ropes are fixedly installed on the tunnel drilling rig (4).

8. The push-pull force testing device according to claim 1, characterized in that, A fixed frame (6) is fixedly installed on the frame (1). The ball joint groove (201) and the fixed barrel (301) are both fixedly installed on the fixed frame (6). A horizontal fixed rod (7) is provided on the fixed frame (6), and its other end is fixedly installed on the tunnel drilling rig (4).

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