A drill rig drill bit breakage and repair device

Abstract

The utility model discloses a rock drilling jumbo broken drill rod repair device, including base, is provided with rear support and front support respectively on the base, the rear part of base is provided with positioning device, and the positioning device is tubular and has internal thread, and the internal thread is matched with the external thread of finished product drill rod tail screw joint place, the connecting device is connected to the internal thread of positioning device, and the rear section of connecting device is rod -shaped and has the same external thread with finished product drill rod tail screw joint place, and the front end of connecting device has the same prism recess with finished product drill rod shape, size consistent, the front end fixedly connected with front seat of base is provided with cutting machine on the front seat, and the cutting piece of cutting machine is perpendicular to the thread axis plane included angle of scrap drill rod and the thread of finished product drill rod tail screw joint place external thread screw thread angle is equal, the utility model can restore the broken part of tail screw joint place and re -use to avoid the cost overrun of drill rod material.

Description

Technical Field

[0001] This utility model belongs to the field of mining equipment technology, and in particular relates to a broken drill bit repair device for a rock drilling rig. Background Technology

[0002] A rock drilling rig, also known as a drilling rig, is a type of rock drilling equipment used in coal mines and underground engineering projects employing the drill-and-blast method. It is mobile and can support multiple rock drills simultaneously performing drilling operations. Rock drilling rigs are mainly used for underground mine tunnel excavation in both metallic and non-metallic mines, drilling and blasting of mine blocks, excavation and drilling of coal mine tunnels, as well as projects such as water diversion tunnels for hydroelectric power stations, anchoring holes for reservoir dam foundations, and support holes for urban underground utility tunnels.

[0003] During the excavation of coal mine roadways, some rocks are quite hard, and the spiral connection at the tail of the drill rod often breaks, causing the entire drill rod to be scrapped and unusable, resulting in material cost overruns, affecting normal operations, and directly restricting the construction progress. Utility Model Content

[0004] The purpose of this invention is to provide a broken drill bit repair device for rock drilling rigs, which can repair the broken part at the tail spiral connection and put it back into use, so as to avoid exceeding the cost of drill bit materials.

[0005] The present invention adopts the following technical solution: a rock drilling rig broken rod repair device, including a base, on which a rear support and a front support are respectively provided, the rear support and the front support are used to place the scrapped rod to be repaired; The base is equipped with a positioning device at the rear. The positioning device is tubular and has internal threads, which match the external threads at the helical connection of the finished chisel tail. The positioning device is internally threaded with a connecting device. The rear section of the connecting device is rod-shaped and has the same external thread as the spiral connection at the tail of the finished drill rod. The front end of the connecting device has a prismatic groove with the same shape and size as the finished drill rod. A front seat is fixedly connected to the front end of the base, and a cutting machine is installed on the front seat. The angle between the cutting blade of the cutting machine and the vertical plane of the thread axis of the scrapped drill rod is equal to the thread helix angle of the external thread at the helical connection of the tail of the finished drill rod.

[0006] The beneficial effects of this utility model are as follows: This utility model can place scrapped drill rods through the front and rear brackets, and connect the front end of the scrapped drill rod to the positioning device through the connecting device, so that the end of the scrapped drill rod to be repaired is placed at the cutting blade. When the scrapped drill rod is rotated, the cutting blade cuts the same external thread as the finished drill rod on the outer circumference of the end to be repaired, thereby realizing the repair and reuse of scrapped drill rods and avoiding the over-cost of drill rod materials. Attached Figure Description

[0007] Figure 1This is a schematic diagram of the structure of a broken drill bit repair device for a rock drilling rig according to an embodiment of the present invention; Figure 2 This is a structural schematic diagram from another perspective of a broken drill bit repair device for a rock drilling rig according to an embodiment of the present invention; Figure 3 This is a reference diagram showing the usage status of a broken drill bit repair device for a rock drilling rig according to an embodiment of this utility model.

[0008] Among them: 10. Base; 20. Rear support; 30. Front support; 40. Positioning device; 50. Front seat; 60. Cutting machine; 61. Cutting disc; 70. Connecting device; 80. Scrap drill rod; 81. Connecting section. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0010] This utility model discloses a device for repairing broken drill bits on a rock drilling rig, such as... Figure 1 and Figure 2 As shown, the system includes a base 10, on which a rear support 20 and a front support 30 are respectively provided. The rear support 20 and the front support 30 are used to place the scrapped drill rod 80 to be repaired. A positioning device 40 is provided at the rear of the base 10. The positioning device 40 is tubular and has an internal thread, which matches the external thread at the helical connection of the tail of the finished drill rod. A connecting device 70 is connected to the internal thread of the positioning device 40. The rear section of the connecting device 70 is rod-shaped and has the same external thread as the helical connection at the tail of the finished drill rod. The front end of the connecting device 70 has a prismatic groove with the same shape and size as the finished drill rod. A front seat 50 is fixedly connected to the front end of the base 10. A cutting machine 60 is provided on the front seat 50. The angle between the cutting blade 61 of the cutting machine 60 and the perpendicular plane of the thread axis of the scrapped drill rod 80 is equal to the thread helix angle of the external thread at the helical connection of the tail of the finished drill rod.

[0011] This utility model allows for the placement of scrapped drill rods 80 via a front bracket 30 and a rear bracket 20. A connecting device connects the front end of the scrapped drill rod 80 to a positioning device 40, positioning the end of the scrapped drill rod 80 to be repaired at the cutting blade 61. When the scrapped drill rod 80 is rotated, the cutting blade 61 cuts an external thread identical to that of the finished drill rod on the outer circumference of the end to be repaired, thereby achieving the repair and reuse of the scrapped drill rod 80 and avoiding cost overruns of drill rod materials.

[0012] In one embodiment, the base 10 is a telescopic base, with the rear support 20 and the front support 30 located on different telescopic sections of the base 10. The telescopic base design allows for the use of scrap drill rods 80 of varying lengths, and the length of the base 10 can be adjusted according to the length of the scrap drill rod 80. Furthermore, the rear support 20 and the front support 30, located on different telescopic sections of the base 10, provide stable support for the scrap drill rod 80, ensuring that both the front and rear portions of the scrap drill rod 80 are supported, thus making the rod more robust during the machining of threaded connections.

[0013] During the processing of the scrap drill rod 80, the front section is supported by the front bracket 30, and the rear section is supported by the rear bracket 20. However, this support method is still considered point support. To make the support more stable, the top of the base 10 has an arc-shaped groove, which is used to accommodate the bottom of the scrap drill rod 80. In this way, the bottom of the scrap drill rod 80 is always supported by the arc-shaped groove for side or surface support.

[0014] As a specific implementation method, such as Figure 3 As shown, the front support 30 includes two rollers symmetrically arranged and spaced apart, forming a space between them to accommodate the scrapped drill rod 80; the axis of the rollers is parallel to the axis of the scrapped drill rod 80. Specifically, the rollers can be implemented using bearings, with the bearing's center mounted on a fixed shaft. The fixed shaft runs in the same direction as the scrapped drill rod 80, i.e., its axis is parallel. The front and rear ends of the fixed shaft are fixed to the base 10 via connectors. More specifically, the rear support 20 has the same structure as the front support 30. Therefore, both receive the same force.

[0015] In one embodiment, the rear of the base 10 has a front-to-back oriented strip groove, and the bottom of the positioning device 40 has a fixing hole; the strip groove and the fixing hole are fixed together by bolts. This fixing method allows for fine-tuning of the relative position between the positioning device 40 and the base 10.

[0016] Since the cutting machine 60 processes the scrapped drill rod 80, and the depth of the threaded connections varies, the cutting machine 60 is connected to the front seat 50 via a lifting device. When fine processing is required, the operator can adjust the height of the cutting machine 60 as needed to ensure a higher consistency between the threaded connections processed on the scrapped drill rod 80 and the finished drill rod.

[0017] This invention also includes a grinding device, which can grind the area to be processed on the scrapped drill rod 80, making the surface of the area smooth and flat. Secondly, it can also locally grind the threaded connection area processed by the cutting machine 60 to remove burrs.

[0018] The method of using this repair device is as follows: First, install the positioning device 40 on the base 10; adjust the length of the base 10 according to the length of the scrapped drill rod 80; insert one end of the scrapped drill rod 80 into the prismatic groove at the front end of the connecting device 70, and then screw the external thread of the connecting device 70 onto the positioning device 40. Place the scrapped drill rod 80 on the front bracket 30 and the rear bracket 20 so that the part of the scrapped drill rod 80 to be processed is located at the cutting blade 61. Then start the cutting machine 60 and rotate the scrapped drill rod 80 so that the scrapped drill rod 80 "rotates" forward from back to front. During this process, the part of the scrapped drill rod 80 to be processed is processed by the cutting blade 61 to produce an external thread, and the external thread matches the internal thread of the positioning device 40.

Claims

1. A device for repairing broken drill bits on a rock drilling rig, characterized in that, Includes a base (10), on which a rear bracket (20) and a front bracket (30) are respectively provided, the rear bracket (20) and the front bracket (30) are used to place the scrapped drill rod (80) to be repaired. The base (10) is provided with a positioning device (40) at the rear. The positioning device (40) is tubular and has an internal thread. The internal thread matches the external thread at the helical connection of the tail of the finished drill rod. The positioning device (40) is internally threaded with a connecting device (70). The rear section of the connecting device (70) is rod-shaped and has the same external thread as the spiral connection at the tail of the finished drill rod. The front end of the connecting device (70) has a prismatic groove with the same shape and size as the finished drill rod. The front end of the base (10) is fixedly connected to a front seat (50), and a cutting machine (60) is provided on the front seat (50). The angle between the cutting blade (61) of the cutting machine (60) and the vertical plane of the thread axis of the scrapped drill rod (80) is equal to the thread helix angle of the external thread at the helical connection of the tail of the finished drill rod.

2. The rock drilling rig broken chisel repair device as described in claim 1, characterized in that, The base (10) is a telescopic base, and the rear bracket (20) and the front bracket (30) are located on different telescopic sections of the base (10).

3. The rock drilling rig broken chisel repair device as described in claim 2, characterized in that, The base (10) has an arc-shaped groove at the bottom for accommodating the bottom of the scrapped drill rod (80).

4. The rock drilling rig broken chisel repair device as described in claim 3, characterized in that, The front support (30) includes two rollers that are symmetrically arranged on the left and right and spaced apart, and a receiving space is formed between the two rollers for accommodating the scrapped drill rod (80); wherein the axis of the rollers is parallel to the axis of the scrapped drill rod (80).

5. A rock drilling rig broken drill bit repair device as described in claim 4, characterized in that, The rear support (20) has the same structure as the front support (30).

6. A rock drilling rig broken drill bit repair device as described in claim 3 or 4, characterized in that, The base (10) has a front-to-back oriented strip groove at the rear, and the positioning device (40) has a fixing hole at the bottom; the strip groove and the fixing hole are fixed by bolts.

7. A rock drilling rig broken drill bit repair device as described in claim 6, characterized in that, The cutting machine (60) is connected to the front seat (50) via a lifting device.

8. A rock drilling rig broken drill bit repair device as described in claim 7, characterized in that, It also includes a polishing device.

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