Drill arm connecting mechanism for drilling machine

Abstract

The utility model relates to a drill arm connecting mechanism for a drilling machine in the technical field of drilling machines, which comprises a bottom frame, a drill arm is correspondingly hinged to the top of the bottom frame, a telescopic device capable of adjusting the angle of the drill arm is correspondingly hinged between the bottom frame and the drill arm, and the drill arm connecting mechanism further comprises a locking assembly. The locking assembly comprises a supporting rod and a movable block, the movable block is slidably connected to the drill boom in the length direction, one end of the supporting rod is correspondingly hinged to the bottom frame, and the other end of the supporting rod is correspondingly hinged to the movable block; the locking assembly further comprises a locking piece capable of fixing the movable block to the drill boom. After the telescopic equipment adjusts the angle of the drill arm, the movable block can be fixed on the drill arm through the locking piece, namely, the angle of the drill arm is locked, at the moment, when a drill rod encounters a rock with high hardness, the drill rod can be blocked by the locking assembly in time when the torsional force of the drill arm is sharply increased, uncontrollable rotation of the drill arm can be effectively prevented, and the drill arm can be prevented from being damaged. And the safety coefficient is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling rigs, in particular to a drill arm connecting mechanism for drilling rigs. Background Art

[0002] The main function of the drilling rig is to drive the drill to break the rock at the bottom of the hole and lower or extract the drill in the hole. It can be used to drill rock cores, ore cores, rock cuttings, gas samples, liquid samples, etc. to explore underground geology and mineral resources. At present, it is widely used in mining, coal, building materials, hydropower construction, highway, railway engineering, etc.

[0003] Existing drilling rigs are generally installed on drilling vehicles, but drilling vehicles can only operate in a larger space. For sites with high slopes and narrow construction spaces that are difficult to access, split drilling rigs with good environmental adaptability, convenient transportation, installation and disassembly are generally used. The split drilling rig includes a power station, an operating table and a main structure, which are flexibly connected through hydraulic pipelines. Among them, the existing main structure includes a chassis, a drilling rig body and a hydraulic cylinder. The rear side of the drill arm of the drilling rig body is provided with an articulated seat, and the top of the chassis is correspondingly articulated with the articulated seat through a pin shaft. The two ends of the hydraulic cylinder are respectively articulated with the chassis and the drill arms of the drilling rig body on both sides, which are used to adjust the angle of the drill arm of the drilling rig body. The connection between the hydraulic cylinder and the drill arm and the connection between the drill arm and the chassis are relatively short. However, this structure has the following defects: 1. When the drilling rig is operating, the torsional force of the drill arm is entirely borne by the hydraulic cylinder. When the drill rod encounters hard rocks, the torsional force of the drill arm will increase dramatically. At this time, the hydraulic cylinder may be unable to bear the torsional force of the drill arm, causing the drill arm to rotate uncontrollably, which may easily lead to safety accidents.

[0004] To this end, we designed a drill arm connection mechanism for a drilling rig that can lock the drill arm angle after adjusting the drill arm angle through a hydraulic cylinder. Utility Model Content

[0005] In order to overcome the deficiencies in the background technology, the utility model discloses a drill arm connecting mechanism for a drilling rig.

[0006] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0007] A drill arm connection mechanism for a drilling rig comprises a base frame, a drill arm is hinged to the top of the base frame, a telescopic device capable of adjusting the angle of the drill arm is hinged between the base frame and the drill arm, and a locking assembly is also provided;

[0008] The locking assembly comprises a support rod and a movable block, wherein the movable block is slidably connected to the drill arm along the length direction, one end of the support rod is correspondingly hinged to the base frame, and the other end is correspondingly hinged to the movable block;

[0009] The locking assembly also includes a locking member capable of fixing the movable block to the drill arm;

[0010] Wherein, the hinges between the drill arm and the base frame, the hinges between the drill arm and the movable block, and the hinges between the drill arm and the base frame form a triangular structure.

[0011] Preferably, a slide rail is provided on the rear side surface of the drill arm along its length direction, and the movable block is slidably connected to the slide rail.

[0012] Preferably, the side of the slide rail away from the drill arm has two spaced-apart parallel side walls, the outer side of the side wall is provided with a slide groove along its length direction, the movable block is located correspondingly between the two side walls, and the positions of the two ends corresponding to the slide groove are provided with pins matching and passing through the slide groove.

[0013] Preferably, the pin shaft is rotatably sleeved at a position corresponding to the inner cavity of the slide groove and is provided with a wear-resistant sleeve.

[0014] Preferably, the side wall corresponding to the slide groove is provided with a plurality of positioning holes extending through the side wall in the width direction at even intervals along the length direction of the side wall near the drill arm; the movable block is provided with a locking hole coaxial with the corresponding positioning hole;

[0015] The locking piece comprises a locking rod which can be inserted into the coaxial locking hole and the positioning hole.

[0016] Preferably, the locking member further comprises an electromagnet capable of being adsorbed on the side wall, and the locking rod is correspondingly fixed to the adsorption surface of the electromagnet.

[0017] Preferably, a connecting rope is provided between the electromagnet and the movable block.

[0018] Preferably, the support rod comprises a first rod and a second rod coaxially arranged with the first rod, the outer end of the first rod is correspondingly hinged to the base frame, and the inner end of the rod body is provided with an external threaded portion; the outer end of the second rod is correspondingly hinged to the movable block, and the inner end of the rod body is provided with an external threaded portion;

[0019] The support rod also includes a bidirectional threaded sleeve threadedly connected to the first rod external threaded portion and the second rod external threaded portion.

[0020] Preferably, the bidirectional threaded casing body is provided with a rotating handle.

[0021] Preferably, the length of the first rod is greater than the length of the second rod.

[0022] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0023] 1. After the telescopic device adjusts the drill arm angle, the movable block can be fixed to the drill arm through the locking part, that is, the angle of the drill arm is locked. At this time, when the drill rod encounters a rock with a higher hardness, even if the torsional force of the drill arm increases sharply, it will be blocked by the locking component, which can effectively prevent the drill arm from rotating uncontrollably and improve the safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the assembly structure of the drill arm and the base frame in the prior art;

[0025] Figure 2 It is a schematic diagram of the structure of the utility model;

[0026] Figure 3 It is the front view of the utility model;

[0027] Figure 4 This is a schematic diagram of the assembly structure of the locking component in the utility model;

[0028] Figure 5 for Figure 4 Middle I is a partial enlarged schematic diagram.

[0029] In the figure: 1, base frame; 2, drill arm; 21, slide rail; 211, side wall; 212, slide groove; 213, positioning hole; 3, telescopic device; 4, locking assembly; 41, support rod; 411, first rod; 412, second rod; 413, two-way threaded sleeve; 414, rotating handle; 42, movable block; 421, pin shaft; 422, wear-resistant sleeve; 423, locking hole; 43, locking piece; 431, locking rod; 432, electromagnet; 44, connecting rope. DETAILED DESCRIPTION

[0030] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. to indicate directions or positional relationships, they only correspond to the drawings of the present application, in order to facilitate the description of the present invention; it should be understood that if there are terms such as "end", "side", "end part", "lateral", "lateral", "transverse", "longitudinal", etc. to indicate directions or positional relationships, they only correspond to the length and width of the corresponding parts, that is, "end part" indicates the head and tail areas in the length direction of the corresponding part, and "side part" indicates the head and tail areas in the width direction of the corresponding part; this is for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0031] Embodiment 1, in combination with the attached Figure 2-5A drill arm connection mechanism for a drilling rig includes a base frame 1, a drill arm 2 is hingedly connected to the top of the base frame 1, and specifically, the front end of the drill arm 2 is an end corresponding to a drill rod; a telescopic device 3 capable of adjusting the angle of the drill arm 2 is hingedly connected between the base frame 1 and the drill arm 2, and the telescopic device 3 uses a hydraulic cylinder as needed; the middle part of the drill arm 2 is hingedly connected to the base frame 1 at the front end; and a locking component 4 is also included;

[0032] The locking assembly 4 includes a support rod 41 and a movable block 42. The movable block 42 is slidably connected to the drill arm 2 along the length direction. One end of the support rod 41 is correspondingly hinged to the base frame 1, and the other end is correspondingly hinged to the movable block 42.

[0033] The locking assembly 4 also includes a locking member 43 capable of fixing the movable block 42 to the drill arm 2;

[0034] Among them, the hinges between the drill arm 2 and the base frame 1, the hinges between the drill arm 2 and the movable block 42, and the hinges between the drill arm 2 and the base frame 1 form a triangular structure.

[0035] In this way, after the telescopic device 3 adjusts the angle of the drill arm 2, the movable block 42 is fixed to the drill arm 2 through the locking member 43, that is, the angle of the drill arm 2 is locked. At this time, when the drill rod encounters a rock with a higher hardness, even if the torsional force of the drill arm 2 increases sharply, it will be blocked by the locking assembly 4, which can effectively prevent the drill arm 2 from rotating uncontrollably and improve the safety factor.

[0036] Furthermore, a slide rail 21 is provided on the rear side surface of the drill arm 2 along its length direction, and a movable block 42 is slidably connected to the slide rail 21; further, the side of the slide rail 21 facing away from the drill arm 2 has two spaced-apart parallel side walls 211, and a slide groove 212 is provided on the outer side of the side wall 211 along its length direction, and the movable block 42 is located between the two side walls 211, and a pin shaft 421 matching and passing through the slide groove 212 is provided at the positions of the two ends corresponding to the slide groove 212.

[0037] Such arrangement of the movable block 42 can ensure that the movable block 42 does not rotate under the cooperation of the two pin shafts 421 and the slide slot 212 , thereby ensuring the stability of the locking assembly 4 .

[0038] As needed, in order to prevent the pin shaft 421 from wearing and affecting the stability and accuracy of the locking of the locking assembly 4, a wear-resistant sleeve 422 is provided on the pin shaft 421 corresponding to the position of the inner cavity of the slide groove 212; in this way, even if wear occurs, the wear-resistant sleeve 422 can be replaced with a lower-priced one, thereby reducing the maintenance cost compared to replacing the pin shaft 421.

[0039] As required, a retaining spring is provided at a position of the pin 421 corresponding to the outer end of the wear-resistant sleeve 422 to prevent the wear-resistant sleeve 422 from moving axially to a large extent.

[0040] Furthermore, a plurality of positioning holes 213 penetrating along the width direction are evenly spaced along the length direction of the side wall 211 corresponding to the slide groove 212 on the side close to the drill arm 2; the movable block 42 is provided with a locking hole 423 which can be coaxial with the corresponding positioning hole 213;

[0041] The locking member 43 has a locking rod 431 that can be inserted into the coaxial locking hole 423 and the positioning hole 213. That is, the locking rod 431 can be inserted into the coaxial locking hole 423 and the positioning hole 213, and at this time, the locking rod 431 and the two pins 421 form a triangular structure with stable characteristics, so that the movable block 42 and the slide rail 21 can be fixed in position, that is, the movable block 42 is fixed to the drill arm 2.

[0042] Furthermore, in order to ensure that the locking hole 423 can be coaxial with the corresponding positioning hole 213, the support rod 41 adopts a support rod with adjustable length. Furthermore, the support rod 41 includes a first rod 411 and a second rod 412 coaxially arranged with the first rod 411, the outer end of the first rod 411 is correspondingly hinged to the bottom frame 1, and the inner end of the rod body is provided with an external threaded portion; the outer end of the second rod 412 is correspondingly hinged to the movable block 42, and the inner end of the rod body is provided with an external threaded portion;

[0043] The support rod 41 also includes a bidirectional threaded sleeve 413 that is threadedly connected to the external threaded portion of the first rod 411 and the external threaded portion of the second rod 412; that is, by rotating the bidirectional threaded sleeve 413, the first rod 411 and the second rod 412 can move relative to or away from each other, thereby achieving the function of adjusting the length of the support rod 41, and then the movable block 42 moves, so that the locking hole 423 in the movable block 42 is coaxial with the corresponding positioning hole 213, for the locking rod 431 to be inserted.

[0044] As required, the bidirectional threaded sleeve 413 is provided with a rotating handle 414 ; that is, the function of rotating the bidirectional threaded sleeve 413 is achieved by rotating the rotating handle 414 , which facilitates the rotation of the bidirectional threaded sleeve 413 .

[0045] Embodiment 2, combined with the attached Figure 4 , 5 , a drill arm connection mechanism for a drilling rig, based on the first embodiment, in order to prevent the locking rod 431 from falling off due to vibration during the use of the drilling rig, the locking member 43 also has an electromagnet 432 that can be adsorbed on the side wall 211, and the locking rod 431 is correspondingly fixed to the adsorption surface of the electromagnet 432; that is, it can be adsorbed on the side wall 211 through the electromagnet 432 to ensure that the locking rod 431 does not move axially, thereby preventing the locking rod 431 from falling off.

[0046] Embodiment 3, in combination with the attached Figure 5 A drill arm connection mechanism for a drilling rig, based on the third embodiment, in order to prevent the locking member 43 from falling off, a connecting rope 44 is provided between the electromagnet 432 and the movable block 42.

[0047] Embodiment 4, in combination with the attached Figure 4 A drill arm connection mechanism for a drilling rig, based on the first embodiment, the length of the first rod 411 is greater than the length of the second rod 412, that is, the bidirectional threaded sleeve 413 is closer to the movable block 42, and after operating the bidirectional threaded sleeve 413, the locking member 43 can be operated without the need for the staff to move, thereby reducing the operating space.

[0048] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A drill arm connection mechanism for a drilling rig, comprising a base frame (1), a drill arm (2) being hingedly connected to the top of the base frame (1), and a telescopic device (3) capable of adjusting the angle of the drill arm (2) being hingedly connected between the base frame (1) and the drill arm (2), characterized in that: Also included is a locking assembly (4); The locking assembly (4) comprises a support rod (41) and a movable block (42); the movable block (42) is slidably connected to the drill arm (2) along the length direction; one end of the support rod (41) is correspondingly hinged to the base frame (1), and the other end is correspondingly hinged to the movable block (42); The locking assembly (4) further comprises a locking member (43) capable of fixing the movable block (42) to the drill arm (2); The hinge between the drill arm (2) and the base frame (1), the hinge between the drill arm (2) and the movable block (42), and the hinge between the drill arm (2) and the base frame (1) form a triangular structure.

2. The drill arm connection mechanism for a drilling rig according to claim 1, characterized in that: A slide rail (21) is provided on the rear side of the drill arm (2) along its length direction, and the movable block (42) is slidably connected to the slide rail (21).

3. The drill arm connection mechanism for a drilling rig according to claim 2, characterized in that: The side of the slide rail (21) facing away from the drill arm (2) has two spaced-apart parallel side walls (211), the outer side of the side wall (211) is provided with a slide groove (212) along its length direction, and the movable block (42) is located between the two side walls (211) and has two ends corresponding to the slide groove (212) and is provided with a pin shaft (421) that matches and penetrates the slide groove (212).

4. The drill arm connection mechanism for a drilling rig according to claim 3, characterized in that: The pin shaft (421) is rotatably sleeved with a wear-resistant sleeve (422) at a position corresponding to the inner cavity of the slide groove (212).

5. The drill arm connection mechanism for a drilling rig according to claim 3, characterized in that: A plurality of positioning holes (213) penetrating in the width direction are evenly spaced along the length direction of the side wall (211) at a side of the side wall (211) corresponding to the slide groove (212) close to the drill arm (2); the movable block (42) is provided with a locking hole (423) that can be coaxial with the corresponding positioning hole (213); The locking member (43) comprises a locking rod (431) which can be inserted into the coaxial locking hole (423) and the positioning hole (213).

6. The drill arm connection mechanism for a drilling rig according to claim 5, characterized in that: The locking member (43) further comprises an electromagnet (432) capable of being adsorbed on the side wall (211), and the locking rod (431) is correspondingly fixed to the adsorption surface of the electromagnet (432).

7. The drill arm connection mechanism for a drilling rig according to claim 6, characterized in that: A connecting rope (44) is provided between the electromagnet (432) and the movable block (42).

8. The drill arm connection mechanism for a drilling rig according to claim 1, characterized in that: The support rod (41) comprises a first rod (411) and a second rod (412) coaxially arranged with the first rod (411); the outer end of the first rod (411) is correspondingly hinged to the base frame (1), and the inner end of the rod body is provided with an external threaded portion; the outer end of the second rod (412) is correspondingly hinged to the movable block (42), and the inner end of the rod body is provided with an external threaded portion; The support rod (41) further comprises a bidirectional threaded sleeve (413) threadedly connected to the external threaded portion of the first rod (411) and the external threaded portion of the second rod (412).

9. The drill arm connection mechanism for a drilling rig according to claim 8, characterized in that: The bidirectional threaded sleeve (413) is provided with a rotating handle (414) on its body.

10. The drill arm connection mechanism for a drilling rig according to claim 8, characterized in that: The length of the first rod (411) is greater than the length of the second rod (412).

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