Low-speed large-torque energy-saving tunneling turntable

Abstract

The invention relates to the technical field of engineering machinery, in particular to a low-speed large-torque energy-saving tunneling rotary table which comprises a drilling barrel, a plurality of protruding blocks are fixedly connected to the inner wall of the drilling barrel, a containing groove extending into the protruding blocks is formed in the outer side of the drilling barrel, the bottom of the containing groove is open, and a drill bit assembly with the adjustable angle is installed in the containing groove; the drill bit assembly comprises a sliding plate slidably connected with the inner wall of the storage groove, an extension block with one end movably extending to the outside of the protruding block is arranged at the bottom of the sliding plate, cutting teeth are fixedly connected to the bottom of the extension block, and a limiting assembly used for limiting the sliding plate is installed in the storage groove. The limiting assembly comprises a plurality of threaded rods fixedly connected with the bottom of the inner side of the containing groove, the threaded rods are sleeved with arc-shaped plates, and the two ends of each arc-shaped plate are provided with round holes corresponding to the threaded rods. The technical problems that according to an existing tunneling drilling disc, it is difficult to adjust the angle of a drill bit to better crush a hard rock stratum, and the replacement frequency and difficulty of the drill bit are reduced are solved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, in particular to a low-speed, high-torque, energy-saving tunneling rotary table. Background Art

[0002] The rotary drilling rig relies on the drill bit at the front end to dig. The turntable and the drill bit are subjected to high loads, high-frequency friction and thermal stress for a long time, which are prone to wear, deformation or breakage.

[0003] After searching, the Chinese invention patent with application number CN202210805604.8 discloses a rotary drill bit and a rotary drilling rig with the drill bit. When dealing with hard rock formations, it can first form small holes on the surface of the rock formation with the help of a high-speed sub-drill bit, and then break them with the help of cutting teeth, thereby achieving low-cost and high-efficiency excavation of hard rock formations.

[0004] The above-mentioned device utilizes a small drill bit to pre-drill holes in the hard rock formation. Although it reduces the wear of the pick when breaking the hard rock formation, it only transfers a portion of the wear to the small drill bit. Therefore, the small drill bit still needs to be replaced in time after it is worn. It does not reduce the wear of the drill bit after the tunneling turntable works and the frequency of replacement. It is also difficult to adjust the angle of the drill bit to better break the hard rock formation, thereby reducing the frequency and difficulty of drill bit replacement. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a low-speed, high-torque, energy-saving tunneling turntable, which solves the technical problem that the existing tunneling drill disc is difficult to adjust the angle of the drill bit to better break the hard rock formation, thereby reducing the frequency and difficulty of replacing the drill bit.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a low-speed, high-torque, energy-saving tunneling turntable, comprising a drill barrel, a plurality of protrusions are fixedly connected to the inner wall of the drill barrel, a receiving groove extending to the inside of the protrusion is opened on the outer side of the drill barrel, the bottom of the receiving groove is open, and a drill bit assembly with an adjustable angle is installed inside the receiving groove;

[0007] The drill bit assembly includes a slide plate slidably connected to the inner wall of the storage groove, an extension block with one end movably extending to the outside of the protrusion is provided at the bottom of the slide plate, a cutting tooth is fixedly connected to the bottom of the extension block, and a limiting assembly for limiting the slide plate is installed inside the storage groove.

[0008] Furthermore, the limiting assembly includes a plurality of threaded rods fixedly connected to the inner bottom of the storage groove, an arc-shaped plate is sleeved on the outside of the threaded rods, circular holes corresponding to the threaded rods are opened at both ends of the arc-shaped plate, and nuts for fixing the arc-shaped plate are installed on the outside of the threaded rods.

[0009] Furthermore, the top and bottom of the protrusion are both arc surfaces, the inner bottom of the receiving groove is an arc surface, and the inner top of the receiving groove is an inclined surface.

[0010] Furthermore, the top of the arc-shaped plate is fixedly connected to the limiting frame, the interior of the storage slot is provided with an arc-shaped limiting plate that movably penetrates the limiting frame, and the slide plate is slidably connected to the arc-shaped limiting plate.

[0011] Furthermore, the top of the arc-shaped limit plate is provided with a plurality of slots, the top of the protrusion is provided with a plurality of longitudinal plates with one end movably extending into the inside thereof, one end of the longitudinal plate movably extends into the slot, and the top of the longitudinal plate is fixedly connected with an inclined plate.

[0012] Furthermore, an arcuate ring is slidably connected to the inner wall of the drill tube, and a longitudinal ring is slidably connected to the inner wall of the drill tube on one side.

[0013] Furthermore, an oblique plate corresponding to the protrusion is fixedly connected to the bottom of the arc ring, and a plurality of springs are fixedly connected between the top of the arc ring and the drill tube.

[0014] Furthermore, a plurality of elastic arc plates are fixedly connected to the top of the arc ring, and bristles are fixedly connected to one side of the elastic arc plates close to the longitudinal ring.

[0015] By means of the above technical solution, the present invention provides a low-speed, high-torque, energy-saving tunneling rotary table, which has at least the following beneficial effects:

[0016] 1. The drill bit assembly provided in the present invention facilitates adjustment of the drill bit angle to better break hard rock formations, slows down the wear rate of the drill bit when breaking hard rock formations, thereby reducing the frequency of drill bit replacement, and at the same time uses a limit assembly to reduce the difficulty of drill bit replacement.

[0017] 2. The present invention not only improves the firmness of the drill barrel by providing an arc-shaped limit plate, a longitudinal plate and an inclined plate, but also can reduce the squeezing force of the pick on the nut that plays a fixing role by utilizing the weight of the medium that enters the drill barrel during the excavation process, thereby reducing the possibility of the nut on the drill barrel loosening and falling off due to squeezing during excavation.

[0018] 3. The present invention can reduce the squeezing force of the medium inside the drill barrel on the pick by setting the inclined plates and protrusions, and reduce the influence of the medium inside the drill barrel on the movement and excavation of the pick, thereby reducing the degree of increased difficulty in excavation caused by the pick being squeezed by forces in both upper and lower directions during excavation.

[0019] 4. The present invention can utilize the reaction force of the medium entering the drill barrel during the excavation process to store force through the arc ring and spring. After the excavation is completed, the stored force is used to drive the arc ring to clean the impurities attached to the inner wall of the drill barrel, thereby achieving the purpose of automatically cleaning the impurities inside the drill barrel after the excavation is completed, and reducing the workload of cleaning the impurities inside the drill barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 A partial cutaway view of the present invention as a whole;

[0023] Figure 3 It is a schematic structural diagram of the bump and drill bit assembly of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the drill bit assembly and the longitudinal plate of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the arc-shaped limiting plate and the longitudinal plate of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the curved plate of the present invention;

[0027] Figure 7 It is an internal cutaway view of the present invention as a whole;

[0028] Figure 8 It is a schematic diagram of the structure of the arcuate ring and the longitudinal ring of the present invention.

[0029] In the figure: 1, drill barrel; 2, bump; 3, drill bit assembly; 31, slide plate; 32, extension block; 33, pick; 34, limit assembly; 341, threaded rod; 342, arc plate; 343, nut; 4, limit frame; 5, arc limit plate; 6, longitudinal plate; 7, inclined plate; 8, arc ring; 9, longitudinal ring; 10, oblique plate; 11, spring; 12, elastic arc plate; 13, bristles. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1

[0032] In order to adjust the drill bit angle to better break the hard rock formation and reduce the difficulty of drill bit replacement, please refer to Figure 1-Figure 6 The present embodiment proposes a low-speed, high-torque, energy-saving tunneling turntable, comprising a drill tube 1, a plurality of protrusions 2 are fixedly connected to the inner wall of the drill tube 1, a receiving groove extending to the inside of the protrusion 2 is provided on the outer side of the drill tube 1, the bottom of the receiving groove is open, an angle-adjustable drill bit assembly 3 is installed inside the receiving groove, the drill bit assembly 3 comprises a slide plate 31 slidably connected to the inner wall of the receiving groove, an extension block 32 is provided at the bottom of the slide plate 31, one end of which is movably extended to the outside of the protrusion 2, a pick 33 is fixedly connected to the bottom of the extension block 32, and the receiving groove is provided with a plurality of protrusions 2. A limiting assembly 34 for limiting the slide plate 31 is installed inside. When in use, the extension block 32 and the pick 33 are placed into the receiving groove from the outside of the drill tube 1, and then extended into the drill tube 1 through the opening at the bottom of the receiving groove until the slide plate 31 is attached to the inner wall of the protrusion 2, and then the slide plate 31 is slid along the inner wall of the protrusion 2 until the pick 33 moves to the required angle, and then the limiting assembly 34 is installed in the receiving groove of the protrusion 2 and fixed. The limiting assembly 34 squeezes and fixes the slide plate 31 and the pick 33 on the protrusion 2 and the drill tube 1.

[0033] When the drill bit needs to be replaced, first remove the limit assembly 34 from the protrusion 2, then move the extension block 32 and the cutting tooth 33 through the opening at the bottom of the receiving groove into the receiving groove, then take out the extension block 32 and cutting tooth 33 that need to be replaced to the outside of the drill barrel 1 and the protrusion 2, then reinstall the new extension block 32 and cutting tooth 33 on the drill barrel 1 and the protrusion 2, finally reinstall the limit assembly 34 and squeeze and fix the slide plate 31 and the cutting tooth 33 on the protrusion 2 and the drill barrel 1 to complete the drill bit replacement process, facilitate the adjustment of the drill bit angle to better break the hard rock formation, slow down the wear rate of the drill bit when breaking the hard rock formation, thereby reducing the frequency of drill bit replacement, and at the same time using the limit assembly 34 to reduce the difficulty of drill bit replacement.

[0034] To reduce the difficulty of replacing the drill bit, refer to Figure 3 and Figure 4The limit assembly 34 includes a plurality of threaded rods 341 fixedly connected to the inner bottom of the receiving groove, an arc plate 342 is sleeved on the outside of the threaded rod 341, and circular holes corresponding to the threaded rod 341 are opened at both ends of the arc plate 342. Nuts 343 for fixing the arc plate 342 are installed on the outside of the threaded rod 341. When in use, the extension block 32 and the pick 33 are installed on the drill tube 1 and the protrusion 2, the slide plate 31 is close to the inner wall of the protrusion 2, and then the arc plates 342 are placed on both sides of the slide plate 31 respectively, and the circular holes on the arc plates 342 The threaded rod is passed through so that the arc plate 342 is also attached to the inner wall of the storage groove, and then the nut 343 is put on the threaded rod 341, and the arc plate 342 is fixed on the protrusion 2 after turning the nut 343. Since both sides of the slide plate 31 are squeezed by the arc plate 342, the slide plate 31 and the cutting tooth 33 are fixed. When the drill bit needs to be replaced, it is only necessary to remove the arc plate 342, replace the new slide plate 31 and the cutting tooth 33, and then reinstall the arc plate 342 to fix the slide plate 31 and the cutting tooth 33, thereby reducing the difficulty of installing and replacing the drill bit.

[0035] In order to improve the firmness of the drill bit, refer to Figure 3 and Figure 4 The top of the arc plate 342 is fixedly connected to the limiting frame 4, and an arc limiting plate 5 that movably penetrates the limiting frame 4 is provided inside the storage groove. The slide plate 31 is slidably connected to the arc limiting plate 5. A plurality of slots are provided on the top of the arc limiting plate 5. A plurality of longitudinal plates 6 that movably extend into the interior of the arc limiting plate 5 are provided on the top of the protrusion 2. One end of the longitudinal plate 6 movably extends into the interior of the slot. An inclined plate 7 is fixedly connected to the top of the longitudinal plate 6. When in use, after the drill bit assembly 3 is installed on the protrusion 2, the arc limiting plate 5 is used to pass through the limiting frame 4. The arc limiting plate 5 cannot move upward after being limited by the limiting frame 4, which can prevent the pick 33 from being subjected to the reaction force when the drill tube 1 descends to break the hard rock formation and moving upward relative to the drill tube 1, resulting in loosening or even falling off, thereby enhancing the protection against cutting The firmness of the fixation of the teeth 33 is improved. At the same time, when the drill barrel 1 moves downward to drill a hole, the medium to be drilled enters the drill barrel 1 and gradually fills the drill barrel 1. The medium inside the drill barrel 1 presses the inclined plate 7 downward under the action of its own gravity, and pushes the longitudinal plate 6 to generate a downward thrust on the arc-shaped limit plate 5, thereby offsetting a part of the force acting upward on the arc-shaped limit plate 5 by the cutting teeth 33 when drilling a hole, thereby reducing the force acting on the nut 343 by the cutting teeth 33 through the arc-shaped limit plate 5 during excavation. This not only improves the firmness of the fixation of the drill barrel, but also can use the weight of the medium entering the drill barrel 1 during excavation to reduce the extrusion force of the cutting teeth 33 on the nut 343 that plays a fixing role, thereby reducing the possibility of the nut 343 on the drill barrel 1 loosening and falling off due to extrusion during excavation.

[0036] Embodiment 2

[0037] In order to facilitate the cleaning of impurities attached to the inner wall of the drill tube 1 during the excavation process and reduce the difficulty of cleaning the drill tube 1 later, refer to Figure 1-Figure 8 On the basis of the first embodiment, the top and bottom of the protrusion 2 are both arc surfaces, the inner bottom of the receiving groove is an arc surface, the inner top of the receiving groove is an inclined surface, the inner wall of the drill tube 1 is slidably connected with an arc ring 8, one side of the arc ring 8 is provided with a longitudinal ring 9 slidably connected with the inner wall of the drill tube 1, the bottom of the arc ring 8 is fixedly connected with an oblique plate 10 corresponding to the protrusion 2, and a plurality of springs 11 are fixedly connected between the top of the arc ring 8 and the drill tube 1. When in use, the thrust of the spring 11 and the gravity of the arc ring 8 drive the arc ring 8 to move downward until the arc ring 8 drops to a balanced position. When the drill tube 1 is excavated, the medium to be drilled enters the inside of the drill tube 1, pushing the arc ring 8 to move upward relative to the drill tube 1. , until the medium fills the inside of the drill tube 1. At this time, the arc ring 8 is pushed to the highest point of the drill tube 1, and most of the medium in the drill tube 1 is between the protrusion 2 and the inclined plate 10. Since the inclined plate 10 and the side of the protrusion 2 facing the medium are both inclined surfaces, they can play a role in limiting the medium, reducing the force of this part of the medium on the lower pick 33 after being squeezed into the middle of the drill tube 1. A small part of the medium is between the protrusion 2 and the pick 33, which can reduce the squeezing force of the medium in the drill tube 1 on the pick 33, and reduce the influence of the medium in the drill tube 1 on the movement and excavation of the pick 33, thereby reducing the degree of increased excavation difficulty caused by the pick 33 being squeezed by forces in both upper and lower directions during excavation.

[0038] After the excavation is completed, the drill barrel 1 is taken out from the excavated medium, and the medium inside the drill barrel 1 will gradually fall out of the drill barrel 1 under the action of its own gravity. After the medium inside the drill barrel 1 is reduced, the restriction effect on the arc ring 8 is weakened, and the push of the spring 11 and the gravity of the arc ring 8 gradually drive the arc ring 8 to descend along the drill barrel 1. During the descent, the arc ring 8 scrapes the impurities attached to the inner wall of the drill barrel 1, and the longitudinal ring 9 reduces the possibility of impurities moving from the gap between the arc ring 8 and the drill barrel 1 to the inside of the arc ring 8, and can use the reaction force of the medium entering the drill barrel 1 during the excavation process to store force. After the excavation is completed, the stored force is used to drive the arc ring 8 to clean the impurities attached to the inner wall of the drill barrel 1, thereby achieving the purpose of automatically cleaning the impurities inside the drill barrel 1 after the excavation is completed, and reducing the workload of cleaning the impurities inside the drill barrel 1.

[0039] In order to reduce the influence of impurities inside the drill tube 1 adhering to the spring 11, refer to Figure 8The top of the arc ring 8 is fixedly connected with a plurality of elastic arc plates 12, and a brush 13 is fixedly connected with the side of the elastic arc plate 12 close to the longitudinal ring 9. When in use, impurities entering the drill tube 1 during the excavation process push the arc ring 8 to move upward relative to the drill tube 1 until the arc ring 8 moves to the top of the drill tube 1, and the elastic arc plate 12 is squeezed and bent and pushed into the arc ring 8. In this process, the bristles 13 gradually approach the spring 11, and after contacting the spring 11, they scrape off the impurities attached to the spring 11, so that the impurities attached to the spring 11 fall to the bottom of the spring 11, and the upper half of the spring 11 is less affected by the impurities, reducing the impact of the impurities on the spring 11, and when the impurities inside the drill tube 1 fall from the inside of the drill tube 1, the elastic force generated by the bending of the elastic arc plate 12 assists the spring 11 to push the arc ring 8 to move downward along the drill tube 1, thereby increasing the thrust of the arc ring 8 in the starting stage and reducing the possibility that the arc ring 8 is blocked by impurities attached to the inner wall of the drill tube 1 and cannot move.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-speed, high-torque, energy-saving tunneling rotary table, comprising a drill tube (1), characterized in that: The inner wall of the drill tube (1) is fixedly connected with a plurality of protrusions (2); the outer side of the drill tube (1) is provided with a receiving groove extending to the inside of the protrusions (2); the bottom of the receiving groove is open; and a drill head assembly (3) with an adjustable angle is installed inside the receiving groove; The drill bit assembly (3) comprises a slide plate (31) slidably connected to the inner wall of the receiving groove, an extension block (32) having one end movably extending to the outside of the protrusion (2) is provided at the bottom of the slide plate (31), a cutting tooth (33) is fixedly connected to the bottom of the extension block (32), and a limiting assembly (34) for limiting the slide plate (31) is installed inside the receiving groove.

2. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 1, characterized in that: The limiting assembly (34) comprises a plurality of threaded rods (341) fixedly connected to the inner bottom of the storage groove, an arc-shaped plate (342) is sleeved on the outside of the threaded rods (341), circular holes corresponding to the threaded rods (341) are provided at both ends of the arc-shaped plate (342), and nuts (343) for fixing the arc-shaped plate (342) are installed on the outside of the threaded rods (341).

3. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 1, characterized in that: The top and bottom of the protrusion (2) are both arc surfaces, the inner bottom of the storage groove is an arc surface, and the inner top of the storage groove is an inclined surface.

4. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 2, characterized in that: The top of the arc-shaped plate (342) is fixedly connected to the limiting frame (4), an arc-shaped limiting plate (5) that movably penetrates the limiting frame (4) is provided inside the storage groove, and the slide plate (31) is slidably connected to the arc-shaped limiting plate (5).

5. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 4, characterized in that: The top of the arc-shaped limiting plate (5) is provided with a plurality of slots, the top of the protrusion (2) is provided with a plurality of longitudinal plates (6) with one end movably extending into the interior thereof, one end of the longitudinal plate (6) movably extending into the slot, and the top of the longitudinal plate (6) is fixedly connected with an inclined plate (7).

6. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 1, characterized in that: The inner wall of the drill tube (1) is slidably connected to an arcuate ring (8), and one side of the arcuate ring (8) is provided with a longitudinal ring (9) slidably connected to the inner wall of the drill tube (1).

7. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 6, characterized in that: The bottom of the arc-shaped ring (8) is fixedly connected to an inclined plate (10) corresponding to the protrusion (2), and a plurality of springs (11) are fixedly connected between the top of the arc-shaped ring (8) and the drill tube (1).

8. The low-speed, high-torque, energy-saving tunneling rotary table according to claim 6, characterized in that: A plurality of elastic arc plates (12) are fixedly connected to the top of the arc ring (8), and bristles (13) are fixedly connected to one side of the elastic arc plate (12) close to the longitudinal ring (9).

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