A drilling sleeve device for mining

Abstract

This utility model discloses a drilling sleeve device for mining, including a header, a drill barrel, a spindle, a bracket, a feed header, a drive mechanism, and a hydraulic cylinder. The drill barrel is movably installed inside the header. The front end of the spindle is coaxially connected to the drill barrel via a center drill. The bracket is rotatably connected to the spindle via bearings, and both ends of the bracket are slidably connected to the header. The feed header is fixedly connected to the header. The drive mechanism includes a motor and a slide block. The motor is fixed to the slide block, and the motor output shaft is connected to the spindle. The slide block is slidably connected to the feed header. The cylinder body of the hydraulic cylinder is fixed inside the header, and the piston rod is connected to the motor of the drive mechanism. The base is fixedly connected to the feed header. This utility model adopts a double-protrusion-slide groove fit between the bracket and the slide block to form a two-stage axial guide. It synchronously constrains radial displacement from the middle of the spindle and the drive end, significantly suppressing drilling vibration, reducing wear on the drill barrel and drill rod, and improving drilling accuracy and equipment life.

Description

Technical Field

[0001] This utility model belongs to the field of mining technology, specifically a drill sleeve device for mining. Background Technology

[0002] In modern mining operations, the drill sleeve assembly, as a key component connecting the drill bit and drill rod, directly determines the accuracy, efficiency, and service life of the drilling operation. Currently, most mainstream drill sleeve assemblies employ a single-stage guiding structure, achieving power transmission and feed control through the cooperation of the sleeve and drill rod.

[0003] However, existing technologies have the following significant drawbacks:

[0004] 1. Due to the simple guiding structure and concentrated constraint points, severe vibration is easily generated during drilling. This vibration not only accelerates the wear of the drill bushing, drill bit, and drill rod, shortening the life of key components, but also causes the drilling trajectory to deviate, resulting in a significant decrease in drilling accuracy and seriously affecting the accuracy of subsequent operations such as blasting hole positioning.

[0005] 2. Insufficient fit between the sleeve and the drive shaft and drill rod causes coaxial deviation during power transmission, resulting in severe power loss during motor transmission and discontinuous power transmission, leading to feed jamming.

[0006] 3. Traditional guide structures have difficulty maintaining a stable propulsion path in fractured or hard rock formations, and cannot effectively guide the drill bit forward, resulting in excessive feed resistance and causing equipment overload shutdown.

[0007] The aforementioned defects have led to bottlenecks in mining operations, such as decreased drilling efficiency, increased equipment maintenance costs, and extended overall construction periods, which seriously restrict the economic efficiency and safety of mining operations. Utility Model Content

[0008] The main purpose of this utility model is to provide a drilling sleeve device for mining that avoids vibration during drilling and can effectively guide the drill barrel.

[0009] The drilling sleeve device for mining provided by this utility model includes a header, a drill barrel, a main shaft, a bracket, a feed header, a drive mechanism, and a hydraulic cylinder. The drill barrel is movably installed inside the header. The front end of the main shaft is coaxially connected to the drill barrel through a center drill. The bracket is rotatably connected to the main shaft through bearings, and both ends of the bracket are slidably connected to the header. The feed header is fixedly connected to the header. The drive mechanism includes a motor and a slide. The motor is fixed to the slide, and the motor output shaft is connected to the main shaft. The slide is slidably connected to the feed header. The cylinder body of the hydraulic cylinder is fixed inside the header, and the piston rod is connected to the motor of the drive mechanism. The base is fixedly connected to the feed header.

[0010] In one embodiment of the above-mentioned device, one end of the drill barrel is provided with drill barrel teeth, and the whole body is provided with drill barrel threads.

[0011] In one embodiment of the above-described device, the center drill is coaxially fixed to the center of the drill barrel via a thread.

[0012] In one embodiment of the above-mentioned device, the bracket has first protrusions at both ends, and the inner wall of the manifold has a first sliding groove that slides in cooperation with the first protrusions.

[0013] In one embodiment of the above-mentioned device, the inner wall of the feed manifold is provided with a second sliding groove.

[0014] In one embodiment of the above-mentioned device, the slide block is provided with a second protrusion, which slides in cooperation with the second groove of the feed manifold.

[0015] In one embodiment of the above-described device, the hydraulic cylinder is arranged along the length direction of the feed manifold.

[0016] In one embodiment of the above-described device, the base is a plate-shaped structure.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. The bracket and slide are designed with a double protrusion-slide groove to form a two-stage axial guide; the radial displacement is constrained synchronously from the middle of the spindle and the drive end, which significantly suppresses drilling vibration, reduces wear on the drill barrel and drill rod, and improves drilling accuracy and equipment life;

[0019] 2. The front end of the spindle is coaxially fixed to the center drill and the drill barrel through a thread, forming an integrated rotary cutting structure; ensuring the coaxiality and continuity of power transmission, reducing motor power loss, solving the problem of feed jamming caused by misfitting traditional drill bushings, and improving the penetration efficiency of complex rock formations;

[0020] 3. The hydraulic cylinder piston rod is directly connected to the motor, which pushes the slide block to feed along the slide groove. It works in conjunction with the motor's rotational power to drive the spindle and drill barrel, thereby achieving dynamic balance between rotation and feed, reducing guiding resistance, ensuring a smooth and stable drilling process, and comprehensively improving drilling efficiency and shortening the mining cycle. Attached Figure Description

[0021] Figure 1 This is a front view of one embodiment of the present invention.

[0022] Figure 2 for Figure 1 Top view.

[0023] Figure 3 for Figure 1 Exploded view of the drill barrel and spindle.

[0024] Figure 4 for Figure 1 A cross-sectional side view of the central bracket.

[0025] Figure 5 for Figure 1 A cross-sectional side view of the central drive mechanism.

[0026] The attached figures are labeled as follows:

[0027] 1. Manifold; 11. First slide groove; 2. Drill barrel; 21. Drill barrel teeth; 22. Drill barrel thread; 3. Spindle; 31. Center drill; 4. Bracket; 41. Bracket bearing; 42. First protrusion; 5. Feed manifold; 51. Second slide groove; 6. Drive mechanism; 61. Motor; 62. Slide; 63. Second protrusion; 7. Hydraulic cylinder; 8. Base. Detailed Implementation

[0028] The relevant technical solutions will now be clearly and completely described with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0029] like Figure 1 and Figure 2 As shown, the mining drill sleeve device disclosed in this embodiment includes a header 1, a drill barrel 2, a spindle 3, a bracket 4, a feed header 5, a drive mechanism 6, a hydraulic cylinder 7, and a base 8.

[0030] The header 1 is an annular shell with one end open, and a first groove 11 in the length direction is opened on the inner wall.

[0031] The drill barrel 2 is a cylindrical body with drill barrel teeth 21 evenly distributed at one end and drill barrel threads 22 around its entire body. The drill barrel is movably installed in the header 1, with the drill barrel teeth facing outwards from the header. The drill barrel serves as the drilling actuator, using the drill barrel teeth to assist in cutting.

[0032] like Figure 3 As shown, the spindle 3 is a rod-shaped transmission component. The front end of the spindle is fixed to the center drill 31, and the surface of the center drill is provided with a center drill thread; the center drill is coaxially threaded and fixed to the center of the drill barrel 2, and its head extends out of the drill barrel.

[0033] like Figure 4 As shown, the bracket 4 is a symmetrical support structure in the shape of a straight line, with a bracket bearing 41 embedded in the center and first protrusions 42 at both ends. The bracket is rotatably connected to the middle of the main shaft 3 through the bracket bearing, and the inner ring of the bearing mates with the main shaft; the first protrusion is embedded in the first groove 11 of the header and slides with the groove.

[0034] A bracket is installed to support the spindle rotation. The bracket bearing can reduce friction and guide the spindle axial feed through the "protrusion-slide groove" to ensure the spindle feed straightness, suppress radial vibration, and improve feed smoothness.

[0035] like Figure 5 As shown, the feed manifold 5 is connected and fixed to the manifold 1. The feed manifold is a box-type housing with a second sliding groove 51 on its inner wall. The feed manifold is equipped with a drive mechanism 6 and a hydraulic cylinder 7.

[0036] The drive mechanism 6 includes a motor 61 and a slide 62, with a second protrusion 63 on the surface of the slide. The motor is fixed to the slide, and the second protrusion is embedded in the second slide groove 51 of the feed manifold 5, with the second protrusion and the second slide groove slidingly engaged; the motor output shaft is connected to the main shaft 3.

[0037] The motor 61 provides rotational power, and the slide 62 achieves smooth feeding through the "protrusion-slide groove" cooperation, and the support bracket suppresses vibration.

[0038] Hydraulic cylinder 7 is a piston cylinder, with its cylinder body fixed in header 1 and arranged along the length of feed header 5. The piston rod is connected to motor 61. The hydraulic cylinder provides feed power, drives the motor to move, and synchronously drives the spindle, bracket, and drill barrel to realize the drilling feed motion.

[0039] The base 8 is a plate-shaped support base, which is fixedly connected to the lower structure of the feed manifold 5. The base is used to support the overall weight of the device, provide an installation benchmark, and ensure structural stability during operation.

[0040] This device uses a "double protrusion-slide groove" structure of bracket and slide to guide the feed trajectory from two dimensions and suppress vibration; the threaded fit of spindle-drill barrel-center drill ensures torque transmission and coaxial accuracy; the hydraulic cylinder and motor work together to realize the composite drilling motion of rotary feed, solving the pain points of feed jamming and severe vibration of traditional devices.

[0041] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although detailed descriptions have been provided with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drilling sleeve device for mining, characterized in that: It includes a header, drill barrel, spindle, bracket, feed header, drive mechanism, and hydraulic cylinder; The drill barrel is movably installed inside the header; the front end of the spindle is coaxially connected to the drill barrel through the center drill; the bracket is rotatably connected to the spindle through bearings, and both ends of the bracket are slidably connected to the header; The feed header is fixedly connected to the header; the drive mechanism includes a motor and a slide, the motor and the slide are fixed and the motor output shaft is connected to the main shaft, and the slide is slidably connected to the feed header; the cylinder body of the hydraulic cylinder is fixed inside the header, and the piston rod is connected to the motor of the drive mechanism; the base is fixedly connected to the feed header.

2. The drilling sleeve device for mining as described in claim 1, characterized in that: The drill barrel has drill barrel teeth at one end and drill barrel threads around its body.

3. The drilling sleeve device for mining as described in claim 1, characterized in that: The center drill is coaxially fixed to the center of the drill barrel by a thread.

4. The drilling bushing device for mining as described in claim 1, characterized in that: The bracket has a first protrusion at both ends, and the inner wall of the manifold has a first groove that slides in cooperation with the first protrusion.

5. The drilling bushing device for mining as described in claim 1, characterized in that: The inner wall of the feed manifold is provided with a second sliding groove.

6. The drilling bushing device for mining as described in claim 5, characterized in that: The slide block is provided with a second protrusion, which slides in conjunction with the second groove of the feed manifold.

7. The drilling bushing device for mining as described in claim 1, characterized in that: The hydraulic cylinder is arranged along the length of the feed manifold.

8. The drilling bushing device for mining as described in claim 1, characterized in that: The base is a plate-shaped structure.

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