A rotary drilling rig with a flipper unloading mechanism

Abstract

The present application relates to the technical field of drilling machines, and particularly provides a rotary drilling rig with a turnover plate unloading mechanism, which comprises a vehicle body, a main rod, an inner cylinder and an outer cylinder. The vehicle body is provided with a stand, and the stand is provided with a mounting plate. The main rod is telescopically and rotatably arranged on the mounting plate. The inner cylinder is fixedly connected with the main rod, and is provided with a plurality of first top blocks. The bottom end of the inner cylinder is provided with a cutter block. The outer cylinder is movably sleeved on the inner cylinder in the vertical direction, and is provided with a plurality of second top blocks. The outer cylinder is configured to, after the inner cylinder slips, move downward to a position where the first top blocks and the second top blocks are disengaged from clamping, so that the inner cylinder rotates relative to the outer cylinder. When the first top blocks and the second top blocks are disengaged from clamping, the bottom end of the outer cylinder exceeds the inner cylinder. According to the present application, the outer cylinder is arranged to be movable up and down relative to the inner cylinder. When the inner cylinder slips, the outer cylinder is first inserted into the slipping layer, and then the inner cylinder rotates relative to the outer cylinder, so as to increase the soil layer resistance and reduce the slipping risk of the inner cylinder.

Description

Technical Field

[0001] This invention relates to the field of drilling rig technology, and in particular to a rotary drilling rig with a tipping unloading mechanism. Background Technology

[0002] During the rotary drilling rig's cutting of soil layers, the bottom plate surface experiences intense friction with the broken soil. When the frictional force between the soil and the drill bit's bottom plate exceeds the cohesive frictional force of the soil particles themselves (i.e., the mutual adhesion force between soil particles), the originally loose soil cannot detach smoothly. Instead, due to the compression and friction of the bottom plate, it gradually adheres to the bottom plate surface, forming a mud layer. As the mud layer thickness increases, the effective contact area between the drill bit and the soil layer decreases, leading to uneven distribution of cutting resistance and causing a "mud-sticking" phenomenon. At this point, the drill bit surface is covered with sticky mud, causing slippage between it and the soil layer during rotation instead of effective cutting. This results in energy loss and slippage during idling, significantly increasing propulsion resistance and, in severe cases, forcing the equipment to stop. This process not only reduces construction efficiency but may also accelerate drill bit wear due to localized overheating, affecting the equipment's service life. Summary of the Invention

[0003] One objective of this invention is to reduce the risk of slipping.

[0004] Specifically, the present invention provides a rotary drilling rig with a tipping unloading mechanism, comprising: a vehicle body on which a vertical frame is mounted, and a mounting plate on the vertical frame; a main rod rotatably mounted on the mounting plate; an inner cylinder fixedly connected to the main rod, with a plurality of first top blocks spaced apart on the top of the outer side wall of the inner cylinder; and a plurality of inclined cutter blocks at the bottom end of the inner cylinder; an outer cylinder movably fitted onto the inner cylinder in a vertical direction, with a plurality of second top blocks spaced apart on the top of the inner side wall of the outer cylinder, which engage with the plurality of first top blocks; the outer cylinder is configured such that, after the inner cylinder slips, it moves down to a position where the first and second top blocks disengage, causing the inner cylinder to rotate relative to the outer cylinder; wherein, when the first and second top blocks disengage, the bottom end of the outer cylinder extends beyond the inner cylinder.

[0005] Furthermore, an annular groove is provided on the inner wall of the outer cylinder, and a limiting protrusion extending into the groove is provided on the outer wall of the inner cylinder. A locking block that can move horizontally is also provided on the inner cylinder. When the locking block extends into the groove, the locking block and the limiting protrusion abut against the upper and lower groove walls of the groove, respectively, to prevent the outer cylinder from moving relative to the inner cylinder. An inclined first through groove is provided on the side of the locking block near the axis of the inner cylinder, and the first through groove gradually moves away from the axis of the inner cylinder from top to bottom. A first push rod that can move vertically is provided through the top wall of the inner cylinder. The bottom end of the first push rod is provided with an inclined rod that matches the structure of the first through groove, and the inclined rod passes through the first through groove. A first fixing block is provided at the end of the first push rod that extends out of the inner cylinder, and a first compression spring is provided between the first fixing block and the top wall of the inner cylinder. An unlocking plate is sleeved on the main rod, and the unlocking plate is fixedly connected to the mounting plate. The unlocking plate is used to press the first push rod down when the main rod moves upward, so that the locking block is disengaged from the groove.

[0006] Furthermore, the flip-plate unloading mechanism includes a base plate and a hinge column. The hinge column is horizontally set at the bottom end of the inner cylinder. The base plate is hinged to the hinge column. An arc-shaped guide plate is provided on the base plate. A feed inlet is formed between the guide plate and the base plate. Multiple blades are arranged at intervals at the bottom end of the guide plate.

[0007] Furthermore, a barb is provided on the side of the base plate opposite to the hinged column, and a locking hook is hinged on the inner wall of the inner cylinder, with one end of the locking hook connected to the barb; a second push rod that can move vertically is provided through the top wall of the inner cylinder, and a connecting rod is hinged to the bottom end of the second push rod, with the connecting rod hinged to the other end of the locking hook.

[0008] Furthermore, a second fixing block is provided at one end of the second push rod extending out of the inner cylinder, and a second compression spring is provided between the second fixing block and the inner cylinder; the unlocking plate is provided with a notch that allows the first push rod or the second push rod to pass through. When the main rod rotates to make the first push rod and the notch face each other, the unlocking plate presses against the second push rod and moves down when the main rod moves up, so that the locking hook and the barb are disengaged.

[0009] Furthermore, a spiral guide bar is provided on the outer wall of the outer cylinder to guide the outer cylinder downward when it rotates.

[0010] Furthermore, the bottom surface of the first top block is provided with a first inclined surface, and the top surface of the second top block is provided with a second inclined surface; wherein the inclination angles of the first inclined surface and the second inclined surface are the same.

[0011] Furthermore, the bottom of the outer cylinder is provided with multiple second through slots at intervals. A vertical hinge rod is provided in the second through slot, and a triangular plate is hinged to the hinge rod. A torsion spring is connected between the triangular plate and the outer cylinder, so that the triangular plate extends into the inner side of the outer cylinder. The top surface of the triangular plate is a slope, which gradually moves away from the second through slot from top to bottom. A limit block is provided on the triangular plate, and the limit block abuts against the groove wall of the second through slot to limit the maximum deflection angle of the triangular plate.

[0012] Furthermore, multiple drill bits are spaced apart at the bottom of the outer cylinder, and the drill bits are set at an angle.

[0013] Furthermore, the inner cylinder has an opening on its side wall, which is opposite to the side wall of the outer cylinder.

[0014] The beneficial effects of this invention are:

[0015] The rotary drilling rig with a flap unloading mechanism of the present invention, by fitting a vertically movable outer cylinder around the outer periphery of the inner cylinder, and by setting the outer cylinder to move downward when the inner cylinder slips, so that the inner cylinder and the outer cylinder are disengaged and the bottom end of the outer cylinder extends beyond the inner cylinder and inserts into the slip layer, thereby increasing the resistance of the slip layer when the inner cylinder rotates relative to the outer cylinder, thereby reducing the risk of slippage of the inner cylinder.

[0016] Furthermore, the rotary drilling rig with a flap unloading mechanism of the present invention, by setting a triangular plate at the bottom of the outer cylinder that can deflect inward into the outer cylinder, so that the triangular plate is inserted into the soil layer, not only further increases the soil resistance and reduces the risk of slippage of the inner cylinder, but also prevents the slag and soil in the inner cylinder from falling when the main rod drives the inner cylinder to move upward to disengage from the borehole.

[0017] Furthermore, the rotary drilling rig with a flap unloading mechanism of the present invention, by setting an opening on the side wall of the inner cylinder, allows the soil in the inner cylinder to move downward through friction when the outer cylinder moves downward relative to the inner cylinder, causing the slag attached to the inner cylinder to fall off, thus ensuring the normal operation of the subsequent rotary drilling work of the inner cylinder. Attached Figure Description

[0018] The following sections will describe some specific embodiments of the invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of a rotary drilling rig with a flap unloading mechanism according to an embodiment of the present invention;

[0020] Figure 2 This is a structural schematic diagram of the main rod, inner cylinder, outer cylinder, etc., according to an embodiment of the present invention;

[0021] Figure 3 yes Figure 2 A schematic enlarged view of region A in the middle;

[0022] Figure 4 This is a structural schematic diagram of the main rod, inner cylinder, outer cylinder, etc., from another angle according to an embodiment of the present invention;

[0023] Figure 5 It is along Figure 4 A schematic cross-sectional view cut off by the section line BB in the diagram;

[0024] Figure 6 It is along Figure 4 A schematic cross-sectional view cut off by the section line CC;

[0025] Figure 7 This is a structural schematic diagram of the main rod, inner cylinder, outer cylinder, etc., from another angle according to an embodiment of the present invention;

[0026] Figure 8 It is along Figure 7 A schematic cross-sectional view cut by the section line DD in the diagram;

[0027] Figure 9 yes Figure 8 A schematic enlarged view of region E in the middle;

[0028] Figure 10 An exploded view of the main rod, inner cylinder, outer cylinder, and other structures according to an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of a triangular plate, a hinge rod, and a torsion spring according to an embodiment of the present invention.

[0030] in:

[0031] 100. Vehicle body; 110. Frame; 120. Mounting plate; 130. Unlocking plate; 131. Notch; 200. Main rod; 300. Inner cylinder; 310. Blade block; 320. First top block; 321. First inclined surface; 330. Limiting protrusion; 340. Locking block; 341. First through groove; 350. First push rod; 351. Diagonal rod; 352. First fixing block; 353. First compression spring; 360. Slide groove; 370. Locking hook; 380. Second push rod; 381. Connecting rod; 382. Second fixing block; 383, second compression spring; 390, opening; 400, outer cylinder; 410, second top block; 411, second inclined surface; 420, groove; 430, spiral guide bar; 440, second through groove; 450, hinge rod; 460, triangular plate; 461, inclined surface; 462, limiting block; 463, mounting hole; 470, torsion spring; 480, drill bit; 500, flip plate unloading mechanism; 510, bottom plate; 511, guide plate; 512, feed port; 513, barb; 520, hinge column. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0033] The terms "first" and "second" used herein are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically stated, this indicates that other features are not excluded and may be further included.

[0034] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] The following reference Figures 1 to 11 This invention describes a rotary drilling rig with a flap unloading mechanism.

[0036] This embodiment provides a rotary drilling rig with a tilting unloading mechanism. The rotary drilling rig with the tilting unloading mechanism generally includes: a body 100, a main rod 200, an inner cylinder 300, and an outer cylinder 400. A support frame 110 is mounted on the body 100, and a mounting plate 120 is mounted on the support frame 110. The main rod 200 is telescopically and rotatably mounted on the mounting plate 120. The inner cylinder 300 is fixedly connected to the main rod 200, and a plurality of first top blocks 320 are spaced apart on the top of the outer side wall of the inner cylinder 300. A plurality of inclined cutter blocks 310 are provided at the bottom end of the inner cylinder 300. The outer cylinder 400 is vertically movably fitted onto the inner cylinder 300, and a plurality of second top blocks 410, which engage with the plurality of first top blocks 320, are spaced apart on the top of the inner side wall of the outer cylinder 400. The outer cylinder 400 is configured such that, after the inner cylinder 300 slips, it moves down to a position where the first top block 320 and the second top block 410 disengage, causing the inner cylinder 300 to rotate relative to the outer cylinder 400. When the first top block 320 and the second top block 410 disengage, the bottom end of the outer cylinder 400 extends beyond the inner cylinder 300.

[0037] When the inner cylinder 300 is not slipping, the top of the outer cylinder 400 is flush with the top wall of the inner cylinder 300. The first top block 320 on the inner cylinder 300 and the second top block 410 on the outer cylinder 400 are interlocked, so that when the inner cylinder 300 rotates under the drive of the main rod 200, it can drive the outer cylinder 400 to rotate. The bottom end of the inner cylinder 300 extends out of the outer cylinder 400 and directly contacts the soil layer, and the cutting tool 310 is used to rotary excavate the soil layer.

[0038] When the rotary drilling rig operator discovers that the rotating inner cylinder 300 can no longer dig downwards (i.e., the inner cylinder 300 has slipped), the main rod 200 is moved upwards, pulling the inner cylinder 300 and outer cylinder 400 out of the hole formed by the rotary drilling. Then, the outer cylinder 400 is moved downwards relative to the inner cylinder 300, causing the first top block 320 and the second top block 410 to disengage, allowing the inner cylinder 300 to rotate relative to the outer cylinder 400. After the outer cylinder 400 moves downwards, its bottom end extends beyond the inner cylinder 300. The main rod 200 is then pressed down to restart rotary drilling. At this point, the outer cylinder 400 first contacts the soil layer and inserts into it. The contact between the outer cylinder 400's wall and the soil layer increases the soil resistance of the slipping layer. As the inner cylinder 300 rotates relative to the outer cylinder 400 under the drive of the main rod 200, the increased resistance of the slipping layer reduces the risk of slippage, thus allowing for successful excavation of the slipping layer. After breaking through the slippage layer, the main rod 200 is moved upward, and then the outer cylinder 400 is moved upward, so that the first top block 320 and the second top block 410 are re-engaged, thereby making the outer cylinder 400 and the inner cylinder 300 rotate synchronously.

[0039] In a further embodiment, an annular groove 420 is provided on the inner wall of the outer cylinder 400, and a limiting protrusion 330 extending into the groove 420 is provided on the outer wall of the inner cylinder 300. A locking block 340 movable in the horizontal direction is also provided on the inner cylinder 300. When the locking block 340 extends into the groove 420, the locking block 340 and the limiting protrusion 330 abut against the upper and lower groove walls of the groove 420 respectively, to prevent the outer cylinder 400 from moving relative to the inner cylinder 300. An inclined first through groove 341 is provided on the side of the locking block 340 near the axis of the inner cylinder 300, and the first through groove 341 gradually moves away from the axis of the inner cylinder 300 from top to bottom. A first push rod 350 movable in the vertical direction is provided through the top wall of the inner cylinder 300, and an inclined rod 351 adapted to the structure of the first through groove 341 is provided at the bottom end of the first push rod 350, and the inclined rod 351 passes through the first through groove 341. A first fixing block 352 is provided at the end of the first push rod 350 that extends out of the inner cylinder 300. A first compression spring 353 is provided between the first fixing block 352 and the top wall of the inner cylinder 300. An unlocking plate 130 is sleeved on the main rod 200, and the unlocking plate 130 is fixedly connected to the mounting plate 120. The unlocking plate 130 is used to press the first push rod 350 down when the main rod 200 moves upward, so that the locking block 340 disengages from the groove 420.

[0040] like Figure 5 , Figure 10 As shown, a groove 360 ​​is provided on the side wall of the inner cylinder 300, and a locking block 340 is disposed in the groove 360. When the main rod 200 drives the inner cylinder 300 and the outer cylinder 400 to move upward relative to the unlocking plate 130, the unlocking plate 130 can press the first push rod 350 downward. When the first push rod 350 moves downward, the inclined rod 351 at the bottom of the first push rod 350 slides downward along the first through groove 341 of the locking block 340, thereby pushing the locking block 340 to move into the inner cylinder 300, so that the locking block 340 disengages from the groove 420. After the locking block 340 disengages from the groove wall of the groove 420, the outer cylinder 400 moves downward under the action of gravity until the limiting protrusion 330 and the upper groove wall of the groove 420 abut against each other, and then the outer cylinder 400 stops moving downward, and the first top block 320 and the second top block 410 disengage.

[0041] In some preferred embodiments, the inner cylinder 300 may be provided with two locking blocks 340 and a second push rod 380 symmetrically arranged about the axis of the inner cylinder 300, so that the locking effect of the outer cylinder 400 relative to the inner cylinder 300 is better.

[0042] In a further embodiment, the flip-plate unloading mechanism 500 includes a base plate 510 and a hinge column 520. The hinge column 520 is horizontally disposed at the bottom end of the inner cylinder 300. The base plate 510 is hinged to the hinge column 520. An arc-shaped guide plate 511 is disposed on the base plate 510. A feed inlet 512 is formed between the guide plate 511 and the base plate 510. A plurality of blades 310 are arranged at intervals at the bottom end of the guide plate 511.

[0043] In this embodiment, a flap unloading structure is installed at the bottom of the inner cylinder 300. The bottom plate 510, hinged to the bottom of the inner cylinder 300, allows the bottom of the inner cylinder 300 to be completely open, making unloading more convenient and thorough. When the excavated soil enters the inner cylinder 300 through the feed inlet 512, the arc-shaped guide plate 511 guides the soil excavated by the rotary cutting blocks 310, thereby dispersing the stress generated during rotary cutting, reducing localized stress concentration, and extending the service life of the cutting blocks 310 and the guide plate 511. The spaced-apart cutting blocks 310 can disperse the cutting force, avoid single-point overload, and further ensure service life.

[0044] In some embodiments, a barb 513 is provided on the side of the base plate 510 opposite to the hinge post 520, and a locking hook 370 is hinged to the inner wall of the inner cylinder 300, with one end of the locking hook 370 connected to the barb 513. A vertically movable second push rod 380 is provided through the top wall of the inner cylinder 300, and a connecting rod 381 is hinged to the bottom end of the second push rod 380, with the connecting rod 381 hinged to the other end of the locking hook 370.

[0045] In this embodiment, by setting a barb 513 on the base plate 510 and a locking hook 370 on the inner cylinder 300 wall, the rotation of the base plate 510 is restricted by the connection between the barb 513 and the locking hook 370, thereby improving the structural stability of the base plate 510 during rotary drilling in the inner cylinder 300. A vertically movable second push rod 380 is set on the top wall of the inner cylinder 300, and a connecting rod 381 is set at the bottom end of the second push rod 380. The two ends of the connecting rod 381 are hinged to the second push rod 380 and the locking hook 370 respectively. Thus, the movement of the second push rod 380 drives the locking hook 370 to rotate through the connecting rod 381, thereby causing the locking hook 370 and the barb 513 to engage or disengage. This design is not only simple to operate but also provides stable performance.

[0046] In other embodiments, the bottom of the inner cylinder 300 may be provided with a removable latch or pin to prevent the bottom plate 510 from flipping when the inner cylinder 300 is rotary drilling.

[0047] In some preferred embodiments, a fixed guide plate may be provided at the top of the inner cylinder 300, through which the first push rod 350 and the second push rod 380 pass. The guide plate, in conjunction with the top wall of the inner cylinder 300, guides the movement direction of the first push rod 350 and the second push rod 380, thereby ensuring that the first push rod 350 and the second push rod 380 move in a vertical direction.

[0048] In a further embodiment, a second fixing block 382 is provided at one end of the second push rod 380 extending out of the inner cylinder 300, and a second compression spring 383 is provided between the second fixing block 382 and the inner cylinder 300; a notch 131 is provided on the unlocking plate 130 to allow the first push rod 350 or the second push rod 380 to pass through. When the main rod 200 rotates to make the first push rod 350 and the notch 131 face each other, the unlocking plate 130 presses the second push rod 380 down as the main rod 200 moves up, causing the locking hook 370 and the barb 513 to disengage.

[0049] In this embodiment, a notch 131 is provided on the unlocking plate 130 to allow either the first push rod 350 or the second push rod 380 to pass through, thereby enabling individual control of the first push rod 350 and the second push rod 380 using the unlocking plate 130. When the main rod 200 rotates to align the first push rod 350 with the notch 131, the main rod 200 is moved upwards, causing the first push rod 350 to extend through the notch 131. Simultaneously, the second push rod 380 moves downwards under the pressure of the unlocking plate 130, thus disengaging the locking hook 370 and the barb 513. When the main rod 200 rotates to align the second push rod 380 with the notch 131, the main rod 200 is moved upwards, causing the second push rod 380 to extend through the notch 131. Simultaneously, the first push rod 350 moves downwards under the pressure of the unlocking plate 130, thus disengaging the locking block 340 from the groove 420.

[0050] In some embodiments, a cylinder may be respectively provided at the top of the first push rod 350 and the second push rod 380, and the extension rods of the two cylinders are respectively connected to the first push rod 350 and the second push rod 380, thereby driving the first push rod 350 and the second push rod 380 to move up and down respectively. In still some embodiments, a fixing plate may be provided on the first push rod 350 and the second push rod 380, and the fixing plate may be provided with threaded holes. Two motors are provided on the top wall of the inner cylinder 300, and the two motors are respectively connected to two threaded rods, and the two threaded rods respectively pass through two threaded holes. The motors rotate forward and backward, driving the threaded rods to rotate, thereby driving the first push rod 350 or the second push rod 380 to move vertically.

[0051] In a further embodiment, a spiral guide bar 430 is provided on the outer side wall of the outer cylinder 400 to guide the outer cylinder 400 to move downward when the outer cylinder 400 rotates.

[0052] In this embodiment, a spiral guide bar 430 is provided on the outer wall of the outer cylinder 400. When the inner cylinder 300 drives the outer cylinder 400 to rotate synchronously, the spiral guide bar 430 guides the outer cylinder 400 downwards, thereby increasing the downward speed of the inner cylinder 300 during rotary drilling. After the outer cylinder 400 moves to a position where it is disengaged from the inner cylinder 300, when the main rod 200 drives the inner cylinder 300 to rotate downwards, the outer cylinder 400 first contacts the soil layer. Supported by the soil layer, the outer cylinder 400 stops moving downwards, and the inner cylinder 300 moves downwards relative to the outer cylinder 400. After the inner cylinder 300 moves to a position where the first top block 320 and the second top block 410 partially engage, the outer cylinder 400 rotates synchronously under the drive of the inner cylinder 300, thereby inserting the outer cylinder 400 into the soil. As the outer cylinder 400 rotates within the soil layer, guided by the spiral guide bar 430, it moves downwards until it disengages from the inner cylinder 300. Then, the outer cylinder 400 stops rotating, while the inner cylinder 300 rotates relative to it. The contact between the outer cylinder 400's wall and the soil layer increases soil resistance, allowing the inner cylinder 300 to smoothly penetrate the soil layer during rotation, thereby breaking through the slip zone.

[0053] In a further embodiment, the bottom surface of the first top block 320 is provided with a first inclined surface 321, and the top surface of the second top block 410 is provided with a second inclined surface 411. The first inclined surface 321 and the second inclined surface 411 have the same inclination angle.

[0054] After the inner cylinder 300 cuts into the slip layer, its downward movement slows down under the load of the soil. In this embodiment, by setting a first inclined surface 321 and a second inclined surface 411, the first inclined surface 321 at the bottom of the first top block 320 and the second inclined surface 411 at the top of the second top block 410 come into contact one by one during the rotation and downward movement of the inner cylinder 300 relative to the outer cylinder 400. Each time the first inclined surface 321 and the second inclined surface 411 come into contact, the rotation of the inner cylinder 300 pushes the second inclined surface 411 downward, causing the first inclined surface 321 and the second inclined surface 411 to disengage. This allows the outer cylinder 400 to continuously move downward, ensuring sufficient contact area between the outer cylinder wall and the soil layer, thereby increasing soil resistance and enabling the inner cylinder 300 to excavate smoothly when rotating relative to the outer cylinder 400.

[0055] In a further embodiment, the bottom of the outer cylinder 400 is provided with a plurality of second through slots 440 at intervals. A vertical hinge rod 450 is provided in the second through slot 440. A triangular plate 460 is hinged to the hinge rod 450. A torsion spring 470 is connected between the triangular plate 460 and the outer cylinder 400, so that the triangular plate 460 extends into the inner side of the outer cylinder 400. The top surface of the triangular plate 460 is an inclined surface 461, which gradually moves away from the second through slot 440 from top to bottom. A limiting block 462 is provided on the triangular plate 460. The limiting block 462 abuts against the groove wall of the second through slot 440 to limit the maximum deflection angle of the triangular plate 460.

[0056] like Figure 11 As shown, the triangular plate 460 is provided with a mounting hole 463. One end of the torsion spring 470 is inserted into the mounting hole 463, and the other end is inserted into the cylinder wall of the outer cylinder 400, so that the triangular plate 460 deflects inward into the outer cylinder 400 under the action of the torsion spring 470. After the triangular plate 460 deflects inward into the outer cylinder 400, the pointing direction of the triangular plate 460 is opposite to the rotation direction of the inner cylinder 300, so that when the inner cylinder 300 rotates relative to the outer cylinder 400, the cutter block 310 can cut and excavate the soil layer more effectively.

[0057] In this embodiment, by setting a triangular plate 460 that can rotate inward on the outer cylinder 400, the triangular plate 460 is inserted into the soil layer. This not only further increases the soil resistance and reduces the risk of slippage of the inner cylinder 300, but also prevents the slag and soil in the inner cylinder 300 from falling when the main rod 200 moves the inner cylinder 300 upward.

[0058] Furthermore, in this embodiment, the top surface of the triangular plate 460 is set as an inclined surface 461 that gradually moves away from the second through groove 440 from top to bottom, so that when the outer cylinder 400 moves upward relative to the inner cylinder 300, the triangular plate 460 can smoothly rotate into the second through groove 440 under the pressure of the inner cylinder wall 300.

[0059] Furthermore, in this embodiment, by setting a limiting block 462 on the triangular plate 460, when the triangular plate 460 is deflected to a certain angle, the limiting block 462 abuts against the groove wall of the second through groove 440, thereby preventing the triangular plate 460 from contacting the blade block 310 at the bottom of the inner cylinder 300 and ensuring the smooth rotary digging of the blade block 310.

[0060] In a further embodiment, a plurality of drill bits 480 are spaced apart at the bottom end of the outer cylinder 400, and the drill bits 480 are inclined.

[0061] In this embodiment, multiple drill bits 480 are spaced apart at the bottom of the outer cylinder 400 to excavate the soil, making it easier for the outer cylinder 400 to be inserted into the soil layer. The drill bits 480 are inclined from top to bottom in the direction of rotation of the outer cylinder 400, so that when the outer cylinder 400 rotates, the drill bits 480 can better cut into the soil layer.

[0062] In a further embodiment, the inner cylinder 300 has an opening 390 on its side wall, which is opposite to the side wall of the outer cylinder 400.

[0063] In this embodiment, an opening 390 is provided on the side wall of the inner cylinder 300, allowing the excavated soil in the inner cylinder 300 to contact the side wall of the outer cylinder 400 through the opening 390. After the inner cylinder 300 slips, when the locking block 340 disengages from the groove 420, causing the outer cylinder 400 to move downward relative to the inner cylinder 300, the outer cylinder 400 can drive the excavated soil in the inner cylinder 300 downward through friction, thereby pushing the excavated soil adhering to the slipping layer on the inner cylinder 300 to fall off, ensuring the normal operation of subsequent rotary drilling work on the inner cylinder 300.

[0064] In some preferred embodiments, the inner cylinder 300 may have multiple openings 390 spaced apart on its sidewall, and the openings 390 may be rectangular. Furthermore, the positions of the openings 390 are not connected to the annular groove 420 to prevent soil from getting trapped within the groove 420.

[0065] In a further embodiment, the outer cylinder 400 can be configured to move downward relative to the inner cylinder 300 while the bottom plate 510 is opened for slag discharge (i.e., after the main rod 200 rotates to the point where the first push rod 350 and the second push rod 380 are misaligned with the notch 131, the main rod 200 is controlled to move upward, causing the unlocking plate 130 to simultaneously press down the first push rod 350 and the second push rod 380, thereby allowing the bottom plate 510 to open for slag discharge while the outer cylinder 400 moves downward relative to the inner cylinder 300). This utilizes the friction between the outer cylinder 400 and the slag to improve slag discharge efficiency. After the outer cylinder 400 moves downward to its limit position (i.e., when the top wall of the limiting protrusion 330 and the groove 420 abuts), the outer cylinder 400 stops moving downward, and the soil in contact with the side wall of the outer cylinder 400 continues to fall under inertia, further improving the slag discharge effect.

[0066] The specific working process of the rotary drilling rig with a tipper unloading mechanism provided by the present invention will be described in conjunction with the above embodiments:

[0067] When the inner cylinder 300 does not slip, the first top block 320 and the second top block 410 engage, and the inner cylinder 300 drives the outer cylinder 400 to rotate synchronously. After the inner cylinder 300 is filled with slag, the main rod 200 drives the inner cylinder 300 to move upward, and then the main rod 200 rotates until the notch 131 on the unlocking plate 130 is misaligned with the first push rod 350 and the second push rod 380. The main rod 200 continues to move upward, and the unlocking plate 130 presses against the first push rod 350 and the second push rod 380 to move downward, causing the barb 513 and the locking hook 370 to disengage. At the same time, the locking block 340 disengages from the groove 420, thereby causing the outer cylinder 400 to move downward relative to the inner cylinder 300 while discharging slag, improving the slag discharge effect.

[0068] After the inner cylinder 300 slips, the main rod 200 moves the inner cylinder 300 upward, and then the main rod 200 rotates until the notch 131 on the unlocking plate 130 is aligned with the second push rod 380. The main rod 200 then continues to move upward, causing the unlocking plate 130 to press against the first push rod 350. Under the pressure of the unlocking plate 130, the first push rod 350 moves downward, causing the inclined rod 351 at the bottom of the first push rod 350 to slide along the first through groove 341 of the locking block 340, thereby pressing the locking block 340 to move inward into the inner cylinder 300. After the locking block 340 moves inward into the inner cylinder 300 and disengages from the groove 420, the outer cylinder 400 moves downward relative to the inner cylinder 300 under gravity until the limiting protrusion 330 and the upper groove wall of the groove 420 abut against each other, causing the first top block 320 and the second top block 410 to disengage.

[0069] Subsequently, the main rod 200 drives the inner cylinder 300 to rotate and move downwards. At this time, the inner cylinder 300 is unloaded, so its downward movement is relatively fast. The outer cylinder 400, which extends beyond the inner cylinder 300, first contacts the slip layer. Then, the inner cylinder 300 continues to rotate and move downwards, causing the straight walls of the first top block 320 and the second top block 410 to engage, so that the rotation of the inner cylinder 300 drives the outer cylinder 400 to rotate synchronously. The inner cylinder 300 continues to rotate and move downwards, causing the outer cylinder 400 to insert into the slip layer and rotate. The inner cylinder 300 begins to slip in the slip layer. At this time, the rotating outer cylinder 400 moves downwards under the guidance of the threaded guide bar until the outer cylinder 400 disengages from the inner cylinder 300. The insertion of the outer cylinder 400 into the slip layer increases the soil resistance of the slip layer. After the outer cylinder 400 and the inner cylinder 300 disengage, the inner cylinder 300 rotates relative to the outer cylinder 400, thus smoothly excavating the soil and continuing to move downwards.

[0070] At this point, the inner cylinder 300 is under load, and its downward movement is relatively slow. As the inner cylinder 300 continues to rotate and move downward, the first inclined surface 321 on the first top block 320 and the second inclined surface 411 on the second top block 410 come into contact. Then, as the inner cylinder 300 continues to rotate and move downward, the first inclined surface 321 presses against the second inclined surface 411 as it moves downward, causing the outer cylinder 400 to move downward relative to the inner cylinder 300. After the first inclined surface 321 presses against the second inclined surface 411 and moves downward to a position where it is no longer in contact, the outer cylinder 400 comes to a stop, and the inner cylinder 300 continues to rotate and move downward relative to the outer cylinder 400, causing the first inclined surface 321 and multiple second inclined surfaces 411 to sequentially contact, press against, and disengage. The outer cylinder 400 is continuously pressed downward, thus ensuring sufficient frictional resistance between the outer cylinder 400's wall and the slip layer, allowing the inner cylinder 300 to smoothly excavate the slip layer when rotating relative to the outer cylinder 400.

[0071] After the inner cylinder 300 is filled with soil and debris, the main rod 200 moves upward, causing the inner cylinder 300 and outer cylinder 400 to detach from the soil layer. Then, the main rod 200 rotates until the notch 131 on the unlocking plate 130 aligns with the first push rod 350. The main rod 200 continues to move upward, causing the unlocking plate 130 to press against the second push rod 380 and move downward, thus disengaging the barb 513 and the locking hook 370. The bottom plate 510 rotates around the hinged column 520 to open, allowing the soil and debris in the inner cylinder 300 to be discharged.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A rotary drilling rig with a tipping unloading mechanism, characterized in that, include: The vehicle body has a support frame on it, and a mounting plate is installed on the support frame; The main rod is telescopically and rotatably mounted on the mounting plate; The inner cylinder is fixedly connected to the main rod, and a plurality of first top blocks are spaced apart on the top of the outer side wall of the inner cylinder; and a plurality of inclined blade blocks are provided at the bottom end of the inner cylinder. An outer cylinder is movably fitted onto the inner cylinder in a vertical direction. The top of the inner sidewall of the outer cylinder is provided with a plurality of second top blocks that engage with a plurality of first top blocks. The outer cylinder is configured such that, after the inner cylinder slips, it moves downward to a position where the first and second top blocks disengage, causing the inner cylinder to rotate relative to the outer cylinder. When the first and second top blocks disengage, the bottom end of the outer cylinder extends beyond the inner cylinder. The inner wall of the outer cylinder is provided with an annular groove, and the outer wall of the inner cylinder is provided with a limiting protrusion that extends into the groove. A locking block that can move in the horizontal direction is also provided on the inner cylinder. When the locking block extends into the groove, the locking block and the limiting protrusion abut against the upper and lower groove walls of the groove respectively to prevent the outer cylinder from moving relative to the inner cylinder. The locking block has an inclined first through groove on the side near the axis of the inner cylinder, which gradually moves away from the axis of the inner cylinder from top to bottom. A first push rod that can move vertically is provided through the top wall of the inner cylinder. The bottom end of the first push rod is provided with an inclined rod adapted to the structure of the first through groove, and the inclined rod passes through the first through groove. A first fixing block is provided at the end of the first push rod that extends out of the inner cylinder. A first compression spring is provided between the first fixing block and the top wall of the inner cylinder. An unlocking plate is sleeved on the main rod, and the unlocking plate is fixedly connected to the mounting plate. The unlocking plate is used to press the first push rod down when the main rod moves upward, so that the locking block disengages from the groove. The flip-plate unloading mechanism includes a base plate and a hinge column. The hinge column is horizontally arranged at the bottom end of the inner cylinder. The base plate is hinged to the hinge column. An arc-shaped guide plate is provided on the base plate. A feed inlet is formed between the guide plate and the base plate. Multiple blades are arranged at intervals at the bottom end of the guide plate.

2. The rotary drilling rig with a tipper unloading mechanism according to claim 1, characterized in that, A barb is provided on the side of the base plate opposite to the hinge post. A locking hook is hinged to the inner wall of the inner cylinder, and one end of the locking hook is connected to the barb. A second push rod that can move vertically is provided on the top wall of the inner cylinder. A connecting rod is hinged to the bottom end of the second push rod, and the connecting rod is hinged to the other end of the locking hook.

3. The rotary drilling rig with a tipper unloading mechanism according to claim 2, characterized in that, A second fixing block is provided at one end of the second push rod extending out of the inner cylinder, and a second compression spring is provided between the second fixing block and the inner cylinder; the unlocking plate is provided with a notch that allows the first push rod or the second push rod to pass through. When the main rod rotates to make the first push rod and the notch face each other, the unlocking plate presses against the second push rod to move down when the main rod moves up, so that the locking hook and the barb are disengaged.

4. The rotary drilling rig with a tipper unloading mechanism according to claim 1, characterized in that, A spiral guide bar is provided on the outer wall of the outer cylinder to guide the outer cylinder downward when it rotates.

5. The rotary drilling rig with a tipper unloading mechanism according to claim 1, characterized in that, The bottom surface of the first top block is provided with a first inclined surface, and the top surface of the second top block is provided with a second inclined surface; wherein the first inclined surface and the second inclined surface have the same inclination angle.

6. The rotary drilling rig with a tipper unloading mechanism according to claim 1, characterized in that, The bottom of the outer cylinder is provided with multiple second through slots at intervals. A vertical hinge rod is provided in the second through slot. A triangular plate is hinged to the hinge rod. A torsion spring is connected between the triangular plate and the outer cylinder, so that the triangular plate extends into the inner side of the outer cylinder. The top surface of the triangular plate is an inclined plane, which gradually moves away from the second through slot from top to bottom. A limit block is provided on the triangular plate. The limit block abuts against the groove wall of the second through slot to limit the maximum deflection angle of the triangular plate.

7. The rotary drilling rig with a tipper unloading mechanism according to claim 1, characterized in that, The bottom end of the outer cylinder is provided with a plurality of drill bits at intervals, and the drill bits are inclined.

8. The rotary drilling rig with a tipper unloading mechanism according to claim 1, characterized in that, The inner cylinder has an opening on its side wall, which is opposite to the side wall of the outer cylinder.

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