Inhole drill integrated jumbo

Abstract

The utility model discloses a kind of down-the-hole drill integrated type pole lifter, belong to pole lifter technical field, the down-the-hole drill integrated type pole lifter including impactor pole lifter subassembly and drill rod pole lifter subassembly, the impactor pole lifter subassembly includes second mounting bracket and impactor slip, the second mounting bracket is fixed to first mounting bracket;The impactor slip is movably connected to the second mounting bracket;Wherein, the impactor slip includes two opposite first slip and second slip, the inner opening of the first slip and second slip is V type.This application's down-the-hole drill integrated type pole lifter, since its impactor slip inner opening is V type, can be flexibly adapted with the impactor of different diameters, after impactor is clamped in impactor slip, user can accurately adjust the position of first slip and second slip, to realize the accurate centering of impactor.

Description

Technical Field

[0001] This utility model relates to the field of drill bit support technology, specifically to an integrated drill bit support for down-the-hole drilling rigs. Background Technology

[0002] Down-the-hole drills are used to drill blast holes in rock strata to extract rock. The deviation of the blast hole directly affects the actual blasting effect. In order to control the quality of the hole, the drill is equipped with a drill bit support device to support the impactor when drilling and the drill rod when drilling deep holes. This device guides and stabilizes the drilling tools of the drill.

[0003] For example, Chinese patent document (CN 215979181 U) provides a composite drill rod holder, which includes a support frame. The support frame is provided with a left connecting rod, a right connecting rod, a left clamping plate, a right clamping plate, and an impactor bushing. The left and right connecting rods are both hinged to the support frame. The left clamping plate is connected to the left connecting rod, and the right clamping plate is connected to the right connecting rod. Both the left and right clamping plates have arc-shaped openings that can form a circular hole for drill rod support. The left and right connecting rods are connected by a telescopic component, which drives the left and right clamping plates to open and close to support the drill rod. The impactor bushing is mounted on the support frame by an adjusting bolt, and the adjusting bolt is used to adjust the centering position of the impactor bushing to support the impactor.

[0004] Although the above-mentioned device has a certain guiding effect on both the drill pipe and the impactor, the impactor bushing has low flexibility and is a simple ring structure. The outer diameter of impactors of different manufacturers, specifications and models can vary greatly. Designing according to the largest diameter of each impactor specification still requires multiple ring slips for adaptation. On the one hand, changing the ring slips when changing different impactors is cumbersome. On the other hand, it is difficult to achieve precise guidance for impactors of different sizes.

[0005] The relevant technologies do not provide effective solutions to the above problems. Utility Model Content

[0006] To address the problem that related drill bit holders cannot accurately guide impactors of various sizes and specifications, some embodiments of this application provide an integrated drill bit holder for down-the-hole drilling rigs, including a drill bit holder bracket and a drill rod drill bit holder assembly. The drill bit holder bracket is used to fix the drill bit holder to the down-the-hole drilling rig's propulsion beam. The drill rod drill bit holder assembly includes a first mounting bracket and a drill rod slip. The first mounting bracket is fixedly connected to the drill bit holder bracket, and the drill rod slip is movably connected to the first mounting bracket for guiding the drill rod. The integrated drill bit holder for down-the-hole drilling rigs also includes an impactor drill bit holder assembly, which includes a second mounting bracket and an impactor slip. The second mounting bracket is fixed to the first mounting bracket, and the impactor slip is movably connected to the second mounting bracket. The impactor slip includes two opposing first slips and second slips, with the inner openings of the first slips and second slips forming a V-shape.

[0007] Furthermore, the first and second slips have identical and symmetrical structures; the inner openings of both the first and second slips include two sides, and the included angle α between the two sides is 90° or 120°.

[0008] Furthermore, the first and second slips are movably connected to the second mounting bracket via adjusting bolts, and the positions of the first and second slips can be changed by rotating the adjusting bolts.

[0009] Furthermore, the second mounting bracket covers the first and second slips, thereby constraining the first and second slips to move linearly within the space enclosed by the second mounting bracket.

[0010] Furthermore, the drill pipe slip assembly includes a left slip and a right slip, and the inner openings of the left slip and the right slip are semi-circular arc-shaped.

[0011] Furthermore, the drill pipe slip assembly is movably connected to the first mounting bracket via a hydraulic cylinder.

[0012] Furthermore, the system includes two hydraulic cylinders, with the left and right slips respectively movably connected to the first mounting bracket via one of the hydraulic cylinders; wherein the telescopic rods of the two hydraulic cylinders are fixedly connected to the left and right slips respectively, and the two telescopic rods are capable of relative extension and retraction.

[0013] Furthermore, the first mounting bracket includes a partition with a through hole formed therein for the impactor to pass through; the partition is located between the drill pipe slip and the impactor slip.

[0014] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0015] In practical applications, down-the-hole drills require the selection of impactors of different diameters based on varying usage needs. The integrated drill bit holder of this application, with its impactor slips having V-shaped openings, can flexibly adapt to impactors of different diameters. After the impactor slips are secured to the impactor, the user can precisely adjust the positions of the first and second slips, thereby achieving accurate centering and guidance of the impactor. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an integrated drill bit support structure for a down-the-hole drill rig according to an embodiment of this application;

[0018] Figure 2 This is an exploded structural diagram of an integrated drill bit holder for a down-the-hole drill rig according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the first slip structure of an integrated drill bit support for a down-the-hole drill rig according to an embodiment of this application;

[0020] Label Explanation:

[0021] 100. Rod holder support;

[0022] 200. Drill pipe support assembly; 210. First mounting bracket; 211. Partition plate; 220. Drill pipe slip; 221. Left slip; 222. Right slip; 230. Hydraulic cylinder; 240. Limit bolt;

[0023] 300, Impactor support assembly; 310, Second mounting bracket; 320, Impactor slip; 321, First slip; 322, Second slip; 330, Adjusting bolt. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0026] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application according to the specific circumstances.

[0027] Reference Figures 1 to 3 As shown, this application provides an integrated drill bit support for a down-the-hole drill rig, including a drill bit support bracket 100 and a drill rod drill bit support assembly 200. The drill bit support bracket 100 is used to fix the drill bit support to the feed beam of the down-the-hole drill rig. The drill rod drill bit support assembly 200 includes a first mounting bracket 210 and a drill rod slip 220. The first mounting bracket 210 is fixedly connected to the drill bit support bracket 100, and the drill rod slip 220 is movably connected to the first mounting bracket 210 for guiding the drill rod.

[0028] Optional, such as Figure 2 As shown, the drill pipe slip 220 assembly includes a left slip 221 and a right slip 222, and the inner openings of the left slip 221 and the right slip 222 are semi-circular arc-shaped.

[0029] like Figure 2 As shown, the integrated drill bit holder for down-the-hole drilling rig also includes an impactor drill bit holder assembly 300. The impactor drill bit holder assembly 300 includes a second mounting bracket 310 and an impactor slip 320. The second mounting bracket 310 is fixed to the first mounting bracket 210 or the drill bit holder bracket 100. Preferably, the second mounting bracket 310 is fixed to one side of the first mounting bracket 210, and the impactor slip 320 is movably connected to the second mounting bracket 310.

[0030] Among them, such as Figure 2 , 3As shown, the impactor slip 320 includes two opposing first slips 321 and second slips 322, the inner openings of the first slips 321 and second slips 322 being V-shaped. The first slips 321 and second slips 322 can move closer or further apart from each other, thereby adjusting the V-shaped surface of the slips to fit close to the outer surface of the impactor.

[0031] It is worth noting that the first mounting bracket 210 and the second mounting bracket 310 mentioned above can be assembled from several components to achieve their functions of support and limiting.

[0032] Specifically, such as Figure 2 , 3 As shown, the inner opening edges of the first slip 321 and the second slip 322 are rounded or chamfered to reduce damage caused by bumps.

[0033] Generally, in practical applications, down-the-hole drills need to select impactors of different diameters according to different usage requirements. The integrated drill bit holder of this application, because the inner opening of its impactor slip 320 is V-shaped, can be flexibly adapted to impactors of different diameters. Users can accurately adjust the position of the first slip 321 and the second slip 322 to achieve accurate centering of the impactor.

[0034] Specifically, the first slip 321 and the second slip 322 have identical structures and are symmetrically arranged. For example... Figure 3 As shown, the inner openings of the first slip 321 and the second slip 322 both include two sides, and the included angle α between the two sides is 90° or 120°. The above two angles can be applied to a wide range of impactor sizes on the market, making them highly practical.

[0035] like Figure 2 As shown, since the impactor support assembly is installed at the end of the drill rod support assembly 200, the first slip 321 and the second slip 322 of the impactor support assembly 300 in this embodiment are movably connected to the second mounting bracket 310 by adjusting bolts 330, and the positions of the first slip 321 and the second slip 322 can be changed by rotating the adjusting bolts 330.

[0036] In detail, the specific principle of the adjustment function of the above-mentioned adjusting bolt 330 is as follows: two superimposed nuts are used on the adjusting bolt 330, one nut is used as the adjusting nut and the other nut is used as the locking nut. The first nut moves along the axial direction of the bolt for adjustment and positioning. After the adjustment is completed, the second nut is tightened in the opposite direction to compress the thread and form a self-locking mechanism. This structure can refer to the existing technology, and will not be described in detail here.

[0037] At the same time, the above structure also makes the impactor 320 easy to disassemble, facilitating user maintenance and replacement.

[0038] Preferred, such as Figure 1 , 2 As shown, the second mounting bracket 310 covers the first slip 321 and the second slip 322, so that the first slip 321 and the second slip 322 are constrained to move linearly within the space enclosed by the second mounting bracket 310, thereby limiting the movement path of the impactor support slip, so as to further ensure the stability of the impactor slip 320 assembly when supporting the guide impactor.

[0039] Specifically, such as Figure 2 As shown, the drill pipe slip 220 assembly is movably connected to the first mounting bracket 210, and the hydraulic cylinder 230 can change the position between the left slip 221 and the right slip 222 when it extends and retracts.

[0040] More specifically, such as Figure 2 As shown, the integrated drill bit holder for down-the-hole drilling rig includes two hydraulic cylinders 230. The left slip 221 and right slip 222 are movably connected to the first mounting bracket 210 via one of the hydraulic cylinders 230. The telescopic rods of the two hydraulic cylinders 230 are fixedly connected to the left slip 221 and right slip 222 respectively, and the two telescopic rods can extend and retract relative to each other. This design is simple in structure and does not occupy much space.

[0041] Among them, such as Figure 2 As shown, the drill pipe slip 220 assembly is movably connected to a limiting bolt 240, which is used to abut against the first mounting bracket 210. When the limiting bolt 240 rotates relative to the drill pipe slip 220 assembly, the extension amount of the limiting bolt 240 changes, thereby limiting the limit position of the extension of the hydraulic cylinder 230. This is used to adjust the slip alignment to ensure the coaxiality of the rotary head, impactor slip, and drill pipe slip when they are closed.

[0042] Specifically, such as Figure 2 As shown, when one of the hydraulic cylinders 230 extends, it drives the left slip 221 to move. The left slip 221 drives the limit bolt 240 to move. During the movement, the limit bolt 240 abuts against the first mounting bracket 210, and the hydraulic cylinder 230 stops moving. This allows for adjustment of different positions of the drill pipe slip 220 assembly at the limit position, thereby achieving the application of different drill pipe diameters and centering adjustment.

[0043] Preferred, such as Figure 2 As shown, the first mounting bracket 210 includes a partition 211, in which a through hole is formed for the impactor to pass through. The partition 211 is located between the drill pipe slip 220 and the impactor slip 320, and is used to increase the overall strength of the structure and to serve as the upper and lower guide surfaces for the drill pipe slip 220 and the impactor slip 320.

[0044] The integrated drill bit holder of this application is easy to adjust when centering and adjusting impactors of different outer diameters, and has a simple and compact structure, resulting in better drill bit holding effect for impactors.

[0045] In this application, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An integrated drill string support for a down-the-hole drill rig, comprising a drill string support bracket and a drill rod support assembly, wherein the drill string support bracket is used to fix the drill string support to the feed beam of the down-the-hole drill rig; the drill rod support assembly includes a first mounting bracket and a drill rod slip, the first mounting bracket being fixedly connected to the drill string support bracket, and the drill rod slip being movably connected to the first mounting bracket for guiding the drill rod; characterized in that: It also includes an impactor support assembly, which includes a second mounting bracket and an impactor slip, wherein the second mounting bracket is fixed to a first mounting bracket; and the impactor slip is movably connected to the second mounting bracket. The impactor slip includes two opposing first slips and second slips, with the inner openings of the first slips and second slips being V-shaped.

2. The integrated drill bit support for a down-the-hole drill rig according to claim 1, characterized in that: The first and second slips have identical structures and are symmetrically arranged. The inner openings of both the first and second slips include two sides, and the included angle α between the two sides is 90° or 120°.

3. The integrated drill bit support for a down-the-hole drill rig according to claim 1, characterized in that: The first and second slips are movably connected to the second mounting bracket via adjusting bolts, and the positions of the first and second slips can be changed by rotating the adjusting bolts.

4. The integrated drill bit support for a down-the-hole drill rig according to claim 1, characterized in that: The second mounting bracket covers the first and second slips, thereby constraining the first and second slips to move linearly within the space enclosed by the second mounting bracket.

5. The integrated drill bit support for a down-the-hole drill rig according to claim 1, characterized in that: The drill pipe slips include a left slip and a right slip, and the inner openings of the left slip and the right slip are semi-circular arc-shaped.

6. The integrated drill bit support for a down-the-hole drill rig according to claim 5, characterized in that: The drill pipe slip assembly is movably connected to the first mounting bracket via a hydraulic cylinder.

7. The integrated drill bit support for a down-the-hole drill rig according to claim 6, characterized in that: It includes two hydraulic cylinders, and the left slip and the right slip are respectively movably connected to the first mounting bracket through one of the hydraulic cylinders; The telescopic rods of the two hydraulic cylinders are fixedly connected to the left and right slips, respectively, and the two telescopic rods can extend and retract relative to each other.

8. The integrated drill bit support for a down-the-hole drill rig according to claim 1, characterized in that: The first mounting bracket includes a partition with a through hole formed therein for the impactor to pass through; the partition is located between the drill pipe slip and the impactor slip.

Images