Double-arm deep hole drill carriage capable of accurately positioning drilling position

Abstract

The double-arm deep hole drill carriage capable of accurately positioning the drilling position comprises a main machine body, the main machine body comprises a main machine frame, an installation base is arranged on the main machine frame, a drill arm telescopic assembly is arranged on the installation base, and the drill arm telescopic assembly comprises four telescopic driving mechanisms which are arranged in parallel. The telescopic driving mechanism comprises a fixed outer sleeve, a telescopic inner sleeve and a driving device, the fixed outer sleeve is fixed on the mounting seat, the telescopic inner sleeve is slidably nested in the fixed outer sleeve, a fixed rack is arranged on the inner top surface of the telescopic inner sleeve, an output shaft of the driving device is connected with a driving gear, and the driving gear is meshed with the fixed rack; the extension directions of the telescopic inner sleeves of two adjacent telescopic driving mechanisms are opposite; a plurality of limiting switches are arranged on the outer wall of the fixing outer sleeve in the axial direction at equal intervals. According to the utility model, through the four groups of symmetrically arranged gear rack driving mechanisms and the distributed limit switches, the closed-loop control of the expansion amount of the drill boom is realized, and the problems of low positioning accuracy and poor unbalance loading resistance of the traditional drill carriage are solved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine drilling rig technology, and in particular to a double-arm deep hole drilling rig that can accurately locate the drilling position. Background Technology

[0002] Dual-arm deep-hole drilling rigs are widely used in mining, tunneling, and other applications for precise drilling in rock masses. In existing technologies, the positioning accuracy and stability of the drill arm directly affect drilling efficiency and construction safety; however, traditional devices suffer from the following problems:

[0003] (1) Large positioning error: The extension and retraction of the drill arm mostly rely on a single hydraulic cylinder or chain drive, which is prone to deviation due to uneven load, resulting in displacement of the drilling position.

[0004] (2) Low adjustment efficiency: Manual adjustment of the drill arm stroke takes a long time and it is difficult to achieve millimeter-level positioning.

[0005] (3) Complex structure: Existing synchronous drive mechanisms require frequent maintenance and have insufficient impact resistance.

[0006] In existing dual-arm hydraulic deep hole drilling rigs, some solutions use dual sprockets to synchronously drive the extension and retraction of the drill arm. However, chain drives are prone to wear and cannot detect the extension and retraction position in real time, still requiring external sensors to assist in positioning. Other solutions use an electrically controlled drill arm positioning device, which combines a servo motor and an encoder, but this is costly and has poor environmental adaptability.

[0007] Therefore, there is an urgent need for a drill arm drive solution that is simple in structure, has high positioning accuracy, and strong anti-interference ability to meet the construction needs under complex working conditions. Utility Model Content

[0008] The purpose of this invention is to overcome the above-mentioned shortcomings. In view of the problems of insufficient positioning accuracy and poor transmission stability of existing drill arms, this invention proposes a double-arm deep hole drilling rig based on multi-stage gear rack drive and limit detection. The drilling position can be quickly and accurately adjusted through a rigid telescopic structure and distributed limit switches.

[0009] The purpose of this utility model is achieved as follows:

[0010] A dual-arm deep hole drilling rig capable of precisely locating drilling positions includes a main body, with tracked walking devices fixed on both sides of the main body. The tracked walking devices are in contact with the ground and used to move the main body. The main body is equipped with a working mechanism, a hydraulic system, and an electrical system. The working mechanism is connected to a rotating support unit.

[0011] The main body includes a main frame, a mounting base is provided on the main frame, a drill arm telescopic assembly is provided on the mounting base, a mounting plate is provided above the drill arm telescopic assembly, and rotating support parts are symmetrically provided at the left and right ends of the mounting plate, and the rotating support parts are connected to the working mechanism.

[0012] The drill arm telescopic assembly includes four parallel telescopic drive mechanisms. Each telescopic drive mechanism includes a fixed outer sleeve, a telescopic inner sleeve, and a drive device. The fixed outer sleeve is fixed on the mounting base and is hollow inside. The telescopic inner sleeve is slidably nested inside the fixed outer sleeve. The inner top surface of the telescopic inner sleeve is provided with a fixed rack. The drive device is fixed to the outer wall of the fixed outer sleeve by bolts. The output shaft of the drive device is connected to a drive gear, and the drive gear meshes with the fixed rack.

[0013] The extension directions of the inner sleeves of two adjacent telescopic drive mechanisms are opposite, forming a symmetrical force structure and reducing off-center load; multiple limit switches are arranged equidistantly along the axial direction on the outer wall of the fixed outer sleeve.

[0014] Furthermore, the limit switch can be a photoelectric switch or a mechanical contact switch.

[0015] Furthermore, one end of the telescopic inner sleeve extending out of the fixed outer sleeve is the outer end, and the other end is the inner end. The outer end of the telescopic inner sleeve is connected to the rotating support part, and the working mechanism is connected through the rotating support part.

[0016] Furthermore, the inner end of the telescopic inner sleeve is provided with a trigger block. When the trigger block passes the limit switch during the telescopic process, the switch signal is fed back to the control system to locate the extension length of the telescopic inner sleeve in real time.

[0017] Furthermore, the sliding contact surface between the telescopic inner sleeve and the fixed outer sleeve is provided with a polytetrafluoroethylene wear-resistant layer to reduce frictional resistance.

[0018] Furthermore, the distance between two adjacent limit switches is 10-50mm.

[0019] Furthermore, the drive device integrates an overload protection module, which automatically shuts down and alarms when the load exceeds a threshold.

[0020] Furthermore, a row of lower support columns is provided at the front and rear ends of the mounting base, and the lower support columns are arranged on the front and rear sides of the tracked walking device.

[0021] Furthermore, the hydraulic system and electrical system include an electric motor and oil pump assembly, a hydraulic device, an electrical control box, and an auxiliary oil tank.

[0022] Furthermore, the mounting plate between the left and right rotating support parts is equipped with an electric motor oil pump assembly, a hydraulic device, an electrical control box, and an auxiliary oil tank.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] This invention provides a dual-arm deep hole drilling rig capable of precisely positioning the borehole. Through four symmetrically arranged gear and rack drive mechanisms and distributed limit switches, it achieves closed-loop control of the drill arm extension and retraction, solving the problems of low positioning accuracy and poor resistance to off-center loads in traditional drilling rigs. It is suitable for high-precision drilling scenarios such as mines and tunnels. It has the following advantages:

[0025] (1) High-precision positioning: Through rigid transmission of gear rack and pinion and closed-loop detection of limit switch, the drilling position error can be controlled within ±5mm.

[0026] (2) Strong resistance to eccentric load: Four sets of symmetrically arranged telescopic drive mechanisms work together to counteract the displacement of the drill arm caused by uneven force on one side.

[0027] (3) Fast response speed: The servo motor directly drives the gear rack, which increases the speed by more than 30% compared with the traditional hydraulic drive.

[0028] (4) Easy maintenance: The modular telescopic drive mechanism supports quick replacement, reducing downtime. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model.

[0030] Figure 2 This is a schematic diagram of the drill arm telescopic assembly of this utility model.

[0031] Figure 3 This is a side view of the drill arm telescopic assembly of this utility model.

[0032] Figure 4 This is a cross-sectional schematic diagram of the telescopic drive mechanism of this utility model.

[0033] in:

[0034] 1. Main body, 1.1 Mounting base, 1.2 Mounting plate, 2. Working mechanism, 3. Telescopic drive mechanism, 3.1 Fixed outer sleeve, 3.2 Telescopic inner sleeve, 3.3 Fixed rack, 3.4 Drive gear, 3.5 Drive device, 3.6 Limit switch, 4. Rotary support, 5. Track walking device, 6. Lower support column, 7. Motor and oil pump assembly, 8. Hydraulic device, 9. Electrical control box, 10. Auxiliary oil tank. Detailed Implementation

[0035] To better understand the technical solution of this utility model, a detailed description will be provided below in conjunction with relevant illustrations. It should be understood that the specific embodiments described below are not intended to limit the specific implementation of the technical solution of this utility model, but are merely possible implementations of the technical solution of this utility model. It should be noted that the descriptions of the positional relationships of the components herein, such as component A being located above component B, are based on the relative positions of the components in the illustrations and are not intended to limit the actual positional relationships of the components. Example 1

[0036] See Figures 1-4 , Figure 1 A schematic diagram of a dual-arm deep hole drilling rig capable of precisely locating boreholes is shown. As shown in the figure, this utility model of a dual-arm deep hole drilling rig capable of precisely locating boreholes includes a main body 1, with tracked walking devices 5 fixed on both sides of the main body 1. The tracked walking devices 5 are in contact with the ground and are used to move the main body 1. The main body 1 is equipped with a working mechanism 2, a hydraulic system, and an electrical system. The working mechanism 2 is connected to a rotating support 4. The hydraulic system and electrical system include a motor-oil pump assembly 7, a hydraulic device 8, an electrical control box 9, and an auxiliary oil tank 10.

[0037] The main body 1 includes a main frame, on which a mounting base 1.1 is provided. A drill arm telescopic assembly is provided on the mounting base 1.1. A mounting plate 1.2 is provided above the drill arm telescopic assembly. Rotary support parts 4 are symmetrically provided at the left and right ends of the mounting plate 1.2. The rotating support parts 4 are connected to the working mechanism 2. A motor oil pump assembly 7, a hydraulic device 8, an electrical control box 9, and an auxiliary oil tank 10 are provided on the mounting plate 1.2 between the two rotating support parts 4.

[0038] The drill arm telescopic assembly includes four parallel telescopic drive mechanisms 3. Each telescopic drive mechanism 3 includes a fixed outer sleeve 3.1, a telescopic inner sleeve 3.2, and a drive device 3.5. The fixed outer sleeve 3.1 is fixed on the mounting base 1.1 and is hollow inside. The telescopic inner sleeve 3.2 is slidably nested inside the fixed outer sleeve 3.1. The inner top surface of the telescopic inner sleeve 3.2 is provided with a fixed rack 3.3. The drive device 3.5 is fixed to the outer wall of the fixed outer sleeve 3.1 by bolts. The output shaft of the drive device 3.5 is connected to a drive gear 3.4, and the drive gear 3.4 meshes with the fixed rack 3.3.

[0039] The extension directions of the inner sleeves 3.2 of two adjacent telescopic drive mechanisms 3 are opposite, forming a symmetrical force-bearing structure and reducing off-center load;

[0040] Multiple limit switches 3.6 are arranged equidistantly along the axial direction on the outer wall of the fixed jacket 3.1. The limit switches 3.6 can be photoelectric switches or mechanical contact switches.

[0041] The telescopic inner sleeve 3.2 extends out of the fixed outer sleeve 3.1 at one end, which is the outer end, and at the other end, which is the inner end. The outer end of the telescopic inner sleeve 3.2 is connected to the rotating support part 4, which is connected to the working mechanism 2. The inner end of the telescopic inner sleeve 3.2 (the end away from the driving device 3.5) is provided with a trigger block. When the trigger block passes the limit switch 3.6 during the telescopic process, the switch signal is fed back to the control system to locate the extension length of the telescopic inner sleeve 3.2 in real time.

[0042] The rotating support 4 includes a movable seat, which is fixed to the output end of the side-push cylinder and moves back and forth via the side-push cylinder. A second rotary reducer is mounted on the movable seat, and a connecting plate is mounted above it via the second rotary reducer. Two inner tubes are mounted on the connecting plate, and an outer shell is fitted over the two inner tubes. The side of the outer shell closest to the main body is connected to the output end of the lifting cylinder, and the bottom of the lifting cylinder is fixed to the connecting plate. The side of the outer shell furthest from the main body is connected to a first rotary reducer, which in turn connects to the working mechanism 2. An upper support cylinder is mounted inside the inner tubes, and two lower support cylinders are mounted below the movable seat.

[0043] A row of lower support columns 6 is provided at the front and rear ends of the mounting base 1.1, and the lower support columns 6 are provided on the front and rear sides of the tracked walking device 5.

[0044] The working mechanism 2 includes a carriage assembly, a power head, and a clamp; the carriage assembly includes a carriage, a mounting base slidably connected to the carriage, a propulsion cylinder connected to the mounting base, and a power head disposed on the mounting base; the carriage also has a guide rail, and a clamp is disposed on the guide rail; a compensation cylinder is connected to the outer side of the carriage.

[0045] The sliding contact surfaces of the telescopic inner sleeve 3.2 and the fixed outer sleeve 3.1 are provided with a polytetrafluoroethylene wear-resistant layer to reduce frictional resistance.

[0046] The spacing between two adjacent limit switches 3.6 is 10-50mm, and the density can be configured according to the construction accuracy requirements.

[0047] The drive unit 3.5 integrates an overload protection module, which automatically stops the machine and alarms when the load exceeds the threshold.

[0048] Taking a certain deep-hole drilling rig used in mining as an example:

[0049] Structural assembly:

[0050] The mounting base is equipped with four sets of telescopic drive mechanisms, with a fixed outer sleeve inner diameter of 80mm, a telescopic inner sleeve length of 1.2m, a rack module of 3, and a drive motor power of 2.2kW.

[0051] A photoelectric limit switch is installed every 50mm on the outer wall of the fixed jacket, for a total of 24 switches, covering a maximum travel of 1.2m.

[0052] Control logic:

[0053] After inputting the target borehole coordinates, the control system calculates the theoretical extension of each telescopic drive mechanism and drives the motors to run synchronously.

[0054] When the telescopic inner sleeve trigger block passes the limit switch, the system corrects the motor speed in real time until the preset position is reached.

[0055] Actual measurement data:

[0056] In granite drilling tests, the repeatability accuracy reached ±0.8mm, which is 60% higher than that of traditional hydraulic drilling rigs.

[0057] Working principle:

[0058] This utility model provides a dual-arm deep hole drilling rig capable of precisely positioning the drilling location. The workflow is as follows:

[0059] When the drive device (such as a servo motor) is started, the drive gear rotates, causing the rack and telescopic inner sleeve to move linearly along the fixed outer sleeve;

[0060] The control system controls the synchronous extension and retraction of the four telescopic drive mechanisms according to the preset drilling coordinates, and accurately calibrates the position through limit switches to achieve millimeter-level positioning of the drill arm's spatial coordinates.

[0061] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model. All technical solutions formed by equivalent transformations or equivalent substitutions fall within the scope of protection of this utility model.

Claims

1. A double-arm deep hole drilling rig capable of accurately positioning a drilling position, comprising a main machine body (1), both sides of the main machine body (1) being fixed with track walking devices (5) in contact with the ground for moving the main machine body (1); characterized in that: The main machine body (1) is provided with a working mechanism (2), a hydraulic system and an electrical system, and the working mechanism (2) is connected with a rotary support part (4); The main machine body (1) comprises a main machine frame, and a mounting seat (1.1) is arranged on the main machine frame; a drill arm telescopic assembly is arranged on the mounting seat (1.1); a mounting plate (1.2) is arranged above the drill arm telescopic assembly; rotary support parts (4) are symmetrically arranged at the left and right ends of the mounting plate (1.2); and the rotary support parts (4) are connected with the working mechanism (2). The drill arm telescopic assembly comprises four parallel telescopic drive mechanisms (3); the telescopic drive mechanism (3) comprises a fixed outer sleeve (3.1), a telescopic inner sleeve (3.2) and a drive device (3.5); the fixed outer sleeve (3.1) is fixed on the mounting seat (1.1) and is hollow; the telescopic inner sleeve (3.2) is slidably nested in the fixed outer sleeve (3.1); a fixed rack (3.3) is arranged on the inner top surface of the telescopic inner sleeve (3.2); the drive device (3.5) is fixed on the outer wall of the fixed outer sleeve (3.1) by means of bolts; the output shaft of the drive device (3.5) is connected with a drive gear (3.4); the drive gear (3.4) is engaged with the fixed rack (3.3); the telescopic inner sleeves (3.2) of the adjacent two telescopic drive mechanisms (3) are opposite in the extending direction; and a plurality of limit switches (3.6) are equidistantly arranged on the outer wall of the fixed outer sleeve (3.1) in the axial direction.

2. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: The limit switch (3.6) can be an optical switch or a mechanical contact switch.

3. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: One end of the telescopic inner sleeve (3.2) extending out of the fixed outer sleeve (3.1) is an outer end, and the other end is an inner end; the outer end of the telescopic inner sleeve (3.2) is connected with the rotary support part (4), and the rotary support part (4) is connected with the working mechanism (2).

4. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 3, characterized in that: The inner end of the telescopic inner sleeve (3.2) is provided with a trigger block; when the trigger block passes through the limit switch (3.6) during the telescopic process, the switch signal is fed back to the control system, so that the extending length of the telescopic inner sleeve (3.2) is positioned in real time.

5. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: A polytetrafluoroethylene wear-resistant layer is arranged on the sliding contact surface between the telescopic inner sleeve (3.2) and the fixed outer sleeve (3.1), so as to reduce the frictional resistance.

6. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: The distance between the adjacent two limit switches (3.6) is 10-50 mm.

7. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: The drive device (3.5) is integrated with an overload protection module; when the load exceeds the threshold value, the drive device (3.5) automatically stops and alarms.

8. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: A row of lower support columns (6) is arranged at the front and rear ends of the lower part of the mounting seat (1.1); and the lower support columns (6) are arranged on the front and rear sides of the crawler walking device (5).

9. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 1, characterized in that: The hydraulic system and the electrical system comprise a motor oil pump assembly (7), a hydraulic device (8), an electrical control box (9) and a sub-oil tank (10).

10. The double-arm deep hole drilling jumbo with accurate positioning of drilling position according to claim 9, characterized in that: The motor oil pump assembly (7), the hydraulic device (8), the electrical control box (9) and the sub-oil tank (10) are arranged on the mounting plate (1.2) between the left and right rotary support parts (4).

Images