Horizontal spiral drilling machine with drill bit capable of being replaced quickly

Abstract

The invention relates to the technical field of spiral drilling machines, in particular to a horizontal spiral drilling machine with a drill bit capable of being rapidly replaced. The drilling machine comprises a machine body, a mounting block is fixedly connected to the machine body, a rotating shaft is slidably connected to one side of the mounting block in a clamped and matched mode, a drill bit body is fixedly connected to the side, away from the mounting block, of the rotating shaft, a limiting column is fixedly connected to the inner wall of the mounting block, and a clamping mechanism used for fixing the rotating shaft is arranged in the mounting block; and an auxiliary positioning mechanism and a driving mechanism are arranged in the mounting block. The bidirectional lead screw is manually rotated to drive the clamping rod to move, so that the clamping rod is clamped into the rotating shaft, the rotating shaft and the limiting column are fixed, and the clamping mode of the clamping rod is more convenient to use compared with bolt installation, and thread damage easily caused by bolt corrosion such as water and soil. And outside soil, sand and stones and the like are difficult to enter the mounting block to abrade the clamping rod like eroding the bolt, so that the adverse factors in the working environment can be better resisted.

Description

Technical Field

[0001] The invention relates to the technical field of spiral drilling machines, in particular to a horizontal spiral drilling machine capable of quickly replacing a drill bit. Background Art

[0002] The horizontal spiral drilling rig mainly drives the spiral drill rod to rotate through a power device (usually a motor or an engine). The drill rod is equipped with spiral blades. During the rotation process, the spiral blades will cut and crush rock and soil and other media. At the same time, the cut materials are transported backward along the drill rod and discharged out of the hole by the rotation of the spiral blades, thereby achieving continuous drilling and drilling horizontal holes. However, different geological conditions have different requirements for drill bits, so different drill bits need to be replaced. For example, when constructing in soft clay formations, the required drill bit cutting edge is relatively sharp and the spiral blade spacing can be slightly smaller, so that the clay can be cut more efficiently and brought out of the borehole smoothly. If hard rock formations are encountered, the drill bits commonly used for soft soil will be difficult to drill effectively and must be replaced with drill bits with carbide cutter heads, higher strength and stronger rock breaking ability.

[0003] The drill bit of existing horizontal spiral drilling rigs is generally installed on the equipment by bolts. However, the working environment of the horizontal spiral drilling rig is usually exposed to substances such as soil, sand, and water. These substances may cause wear and corrosion to the bolts, thereby causing damage to the bolt threads, thereby affecting their tightening effect. In addition, when using tools such as wrenches to try to remove the damaged bolts, the originally smooth thread engagement surface may become rough and irregular, which may easily cause jamming when twisting, and greater force must be applied to continue turning, increasing the difficulty of disassembly. Even if new bolts are replaced later, if the previous thread damage causes the thread structure integrity of the installation site to be destroyed, the new bolts are also prone to loosening during equipment operation. Summary of the invention

[0004] The object of the present invention is to provide a horizontal spiral drilling machine with a quick replaceable drill bit, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides a horizontal spiral drilling machine capable of quickly replacing a drill bit, comprising a machine body, a mounting block fixedly connected to the machine body, a rotating shaft slidably engaged with one side of the mounting block, a drill body fixedly connected to the side of the rotating shaft away from the mounting block, a limiting column fixedly connected to the inner wall of the mounting block, a clamping mechanism for fixing the rotating shaft is provided inside the mounting block, and an auxiliary positioning mechanism and a driving mechanism are provided inside the mounting block; When the clamping mechanism is not fixing the rotating shaft, the auxiliary positioning mechanism is in a horizontal state, and is used to assist the clamping work between the clamping mechanism and the rotating shaft. When the clamping mechanism clamps and fixes the rotating shaft, the clamping mechanism drives the driving mechanism to squeeze the auxiliary positioning mechanism to switch from a horizontal state to an expanded state, so that the auxiliary positioning mechanism can limit the rotating shaft and the limit column at the same time.

[0006] As a further improvement of the present technical solution, the clamping mechanism includes two clamping rods slidably connected to the inner wall of the mounting block, and the two clamping rods are symmetrically arranged, the outer wall of the limiting column is symmetrically provided with limiting grooves, and the size of the limiting grooves is adapted to the size of the clamping rods, and the rotating shaft is symmetrically provided with through grooves, and the size of the through grooves is the same as the size of the limiting grooves.

[0007] As a further improvement of the present technical solution, the auxiliary positioning mechanism includes at least a mounting rod fixedly connected to the inner wall of the mounting block, the mounting rod extending to be arranged inside the limiting column, the inner wall of the mounting rod is slidably connected to two sliding rods, and the two sliding rods are symmetrically arranged on both sides of the mounting rod, a positioning groove is provided on the side where the rotating shaft abuts the limiting column, the outer walls of the two sliding rods are rotatably connected to two limiting rods, grooves are provided inside the limiting column and the positioning groove of the rotating shaft, and the two grooves are aligned, and the limiting rod is snap-fitted with the groove.

[0008] As a further improvement of the technical solution, the outer wall of the mounting rod is fixedly connected with a plurality of fixing plates, each of the fixing plates is fixedly connected with a pillar, and each of the plurality of limit rods is provided with a through slot, and the plurality of pillars are slidably connected with adjacent through slots; The through groove is arranged obliquely.

[0009] As a further improvement of the present technical solution, the driving mechanism includes at least a T-shaped column slidably connected to the inner wall of the mounting rod, and one side of the T-shaped column is located outside the mounting rod, and the side of the T-shaped column located inside the mounting rod is fixedly connected to an extrusion block, and the inner wall of the mounting rod is fixedly connected to a No. 2 return spring, and the side of the No. 2 return spring away from the mounting rod is fixedly connected to the extrusion block, and the No. 2 return spring is sleeved on the outer wall of the T-shaped column.

[0010] As a further improvement of the present technical solution, two circular rings are fixedly connected to the outer wall of the mounting rod, and two No. 1 return springs are respectively slidably connected to adjacent circular rings, one side of the two circular rings is fixedly connected to a No. 1 return spring, and the side of the two No. 1 return springs away from the circular rings is fixedly connected to the outer wall of the adjacent sliding rod.

[0011] As a further improvement of the technical solution, a clamping slot is provided in the groove of the limiting column and the rotating shaft, and the clamping slot is clamped and adapted with the bent portion of the limiting rod.

[0012] As a further improvement of the present technical solution, the inner wall of the mounting block is rotatably connected to a bidirectional screw rod, and one side of the bidirectional screw rod passes through the mounting block. The side of the bidirectional screw rod located inside the mounting block is threadedly connected to two sliders, and the two sliders are fixedly connected to adjacent clamping rods on the side away from the bidirectional screw rod.

[0013] As a further improvement of the technical solution, a rectangular groove is opened inside the mounting rod, a connecting block is slidably connected to the inner wall of the rectangular groove, and a side of the connecting block away from the sliding groove is fixedly connected to the extrusion block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the horizontal spiral drilling machine with quick drill bit replacement, the clamping rod is driven to move by manually rotating the bidirectional screw rod, so that the clamping rod is clamped into the inside of the rotating shaft to fix the rotating shaft and the limit column. Compared with bolt installation, water, soil, etc. erosion of the bolts can easily cause thread damage, while the clamping method of the clamping rod makes it difficult for external soil, sand and stones to enter the installation block like erosion of the bolts to cause wear on the clamping rod, thereby better resisting these adverse factors in the working environment and extending the service life of the clamping rod.

[0015] 2. In the horizontal spiral drilling machine capable of quickly replacing drill bits, before the clamping rod is clamped to the rotating shaft, the rotating shaft is manually rotated to drive the positioning groove of the rotating shaft to rotate, so that the positioning groove is aligned with the limit rod, thereby providing an accurate position reference for the subsequent accurate clamping of the clamping rod into the interior of the rotating shaft, avoiding problems such as incomplete clamping or difficult clamping due to inaccurate clamping position, and ensuring the accuracy and stability of the clamping between the clamping rod and the rotating shaft; After the clamping rod is clamped to the rotating shaft, the movement of the clamping rod drives the limit rod to move. Under the limitation of the support and the through groove, the limit rod rotates from the horizontal state to the expanded state. When the limit rod is expanded, it can be clamped into the grooves of the limit column and the rotating shaft respectively, which not only realizes further clamping and improves the stability of the clamping rod and the rotating shaft after clamping. Moreover, when the rotating shaft is working, it will be subjected to various external forces. These external forces can be transmitted to the mounting block through the limit rod, and then the force can be further dispersed and transmitted to the supporting structure of the entire equipment, avoiding the rotating shaft from being damaged due to excessive force alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the mounting block of the present invention; Figure 3 It is a first cross-sectional schematic diagram of the mounting block of the present invention; Figure 4 It is a schematic diagram of a half-section structure of a mounting block of the present invention; Figure 5It is a schematic diagram of the auxiliary positioning mechanism and the driving mechanism structure of the present invention; Figure 6 It is a second cross-sectional schematic diagram of the mounting block of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the rotating shaft of the present invention; Figure 8 For the present invention Figure 4 A schematic diagram of the enlarged structure at point A; Fig. 9 It is a plane view of the horizontal state of the limit rod of the present invention; Fig.10 It is a plan view of the limit rod of the present invention in the expanded state.

[0017] The meaning of each number in the figure is: 100, machine body; 110, mounting block; 120, rotating shaft; 121, drill body; 130, limiting column; 131, slot; 140, bidirectional screw rod; 141, slider; 200, clamping mechanism; 210, clamping rod; 300, auxiliary positioning mechanism; 310, mounting rod; 311, sliding rod; 312, limiting rod; 320, fixing plate; 321, pillar; 330, circular ring; 331, No. 1 return spring; 400, driving mechanism; 410, T-shaped column; 411, extrusion block; 412, No. 2 return spring; 420, connecting block. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in 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.

[0019] See also Figure 1-Figure 10As shown, the present embodiment provides a horizontal spiral drill with a quick replaceable drill bit, including a machine body 100, a mounting block 110 is fixedly connected to the machine body 100, a rotating shaft 120 is slidably engaged on one side of the mounting block 110, a drill body 121 is fixedly connected to the side of the rotating shaft 120 away from the mounting block 110, a limiting column 130 is fixedly connected to the inner wall of the mounting block 110, and a clamping mechanism 200 for fixing the rotating shaft 120 is provided inside the mounting block 110. Compared with the bolt clamping fixation method, the bolt is prone to thread damage due to frequent contact with soil, sand and stone, which leads to problems such as twisting jam and difficulty in disassembly. Through the clamping fixation of the clamping mechanism 200, it is difficult for external soil, sand and stone to enter the clamping mechanism 200 like corroding the bolts, causing wear on the clamping part of the clamping mechanism 200, thereby better resisting these adverse factors in the working environment and extending the service life of the clamping mechanism 200. An auxiliary positioning mechanism 300 and a driving mechanism 400 are provided inside the mounting block 110.

[0020] When the clamping mechanism 200 has not fixed the rotating shaft 120, the auxiliary positioning mechanism 300 is in a horizontal state, which is used to assist the clamping of the clamping mechanism 200 and the rotating shaft 120, so that the position of the clamping mechanism 200 and the rotating shaft 120 is first aligned and calibrated before the clamping mechanism 200 and the rotating shaft 120 are clamped, thereby ensuring that the subsequent clamping between the clamping mechanism 200 and the rotating shaft 120 is more accurate. When the clamping mechanism 200 clamps and fixes the rotating shaft 120, the clamping mechanism 200 drives the driving mechanism 400 to squeeze the auxiliary positioning mechanism 300 and switch from the horizontal state to the expanded state, so that the auxiliary positioning mechanism 300 can limit the rotating shaft 120 and the limiting column 130 at the same time, thereby providing additional support force for the clamping between the clamping mechanism 200 and the rotating shaft 120, so that during the operation of the equipment, when facing various external forces, this multi-directional support can effectively prevent the clamping parts from loosening, displacement, etc., to ensure that the clamping is always firm and stable, and the normal operation of the equipment is guaranteed.

[0021] The present invention takes into account that the drill bit of the existing horizontal spiral drilling machine is generally installed on the equipment by bolts. However, the working environment of the horizontal spiral drilling machine is usually exposed to substances such as soil, sand, and water. These substances may cause wear and corrosion to the bolts, thereby causing damage to the threads of the bolts. As a result, jamming is likely to occur when the bolts are tightened, and greater force is required to continue to rotate, increasing the difficulty of disassembly; therefore, a clamping mechanism 200 is provided, and the clamping mechanism 200 is moved to clamp the rotating shaft 120 to the inside of the limiting column 130. Compared with bolt installation, water, soil, etc. erode the bolts, which easily causes damage to the threads. However, with the clamping method of the clamping mechanism 200, it is difficult for external soil, sand, etc. to enter the clamping part and cause wear like eroding the bolts, thereby better resisting these adverse factors in the working environment and extending the service life of the connecting structure.

[0022] It is also taken into consideration that when installing the rotating shaft 120, the clamping connection between the clamping mechanism 200 and the rotating shaft 120 can be faster; therefore, an auxiliary positioning mechanism 300 is set up to calibrate the position of the rotating shaft 120 clamped in the limiting column 130 before the clamping mechanism 200 and the rotating shaft 120 are clamped, so that the subsequent clamping connection between the clamping mechanism 200 and the rotating shaft 120 is more accurate, avoiding problems such as incomplete clamping or difficult clamping due to inaccurate position, and ensuring the accuracy and stability of the clamping connection between the clamping mechanism 200 and the rotating shaft 120.

[0023] In addition, after the clamping mechanism 200 and the rotating shaft 120 are calibrated and positioned by the auxiliary positioning mechanism 300, the clamping mechanism 200 is driven to clamp into the rotating shaft 120. At this time, the clamping mechanism 200 moves and squeezes the driving mechanism 400, so that the driving mechanism 400 drives the auxiliary positioning mechanism 300 to move, thereby driving the auxiliary positioning mechanism 300 to rotate from the horizontal state at the initial calibration to the expanded state. The expanded auxiliary positioning mechanism 300 can clamp and fix the limit column 130 and the rotating shaft 120 at the same time.

[0024] The auxiliary positioning mechanism 300 is clamped to the rotating shaft 120 to achieve further clamping, thereby improving the stability of the clamping mechanism 200 after being clamped to the rotating shaft 120 .

[0025] The auxiliary positioning mechanism 300 is snapped into the limit column 130. When the rotating shaft 120 is working, it will be subjected to various external forces. These external forces can be transmitted to the limit column 130 through the auxiliary positioning mechanism 300. The limit column 130 is tightly connected to the mounting block 110, which can further disperse the force and transmit it to the supporting structure of the entire device, thereby preventing the rotating shaft 120 from being damaged by being subjected to excessive force alone.

[0026] In order to fix the rotating shaft 120 in the limiting column 130, as shown in FIG. Figure 4 As shown, the specific structure of the clamping mechanism 200 is further disclosed. The clamping mechanism 200 includes two clamping rods 210 slidably connected to the inner wall of the mounting block 110, and the two clamping rods 210 are symmetrically arranged. The outer wall of the limiting column 130 is symmetrically provided with limiting grooves, and the size of the limiting grooves is adapted to the size of the clamping rods 210. The rotating shaft 120 is symmetrically provided with through grooves, and the size of the through grooves is the same as the size of the limiting grooves. By moving the two clamping rods 210 closer to each other, the clamping rod 210 moves and passes through the limiting grooves of the limiting column 130 and the through grooves of the rotating shaft 120 in turn, and then is clamped into the inside of the rotating shaft 120, so as to fix the rotating shaft 120 and the limiting column 130.

[0027] In order to enable a faster clamping connection between the clamping rod 210 and the rotating shaft 120, Figure 4-Figure 5 as well as Figure 7-10As shown, the specific structure of the auxiliary positioning mechanism 300 is further disclosed. The auxiliary positioning mechanism 300 at least includes a mounting rod 310 fixedly connected to the inner wall of the mounting block 110, and the mounting rod 310 extends to the interior of the limiting column 130. The inner wall of the mounting rod 310 is slidably connected to two sliding rods 311, and the two sliding rods 311 are symmetrically arranged on both sides of the mounting rod 310. A positioning groove is provided on one side where the rotating shaft 120 abuts against the limiting column 130. The positioning groove is circular in the middle and rectangular on both sides. When the rotating shaft 120 is inserted into the limiting column 130, the mounting rod 310 is also inserted into the rotating shaft 120 from the circular shape of the positioning groove of the rotating shaft 120. The outer walls of the two sliding rods 311 are rotatably connected to two limiting rods 312. Grooves are provided inside the limiting column 130 and the positioning grooves of the rotating shaft 120, and the two grooves are aligned, and the limiting rod 312 is snap-fitted with the grooves.

[0028] When the rotating shaft 120 is inserted into the limiting column 130, the limiting rod 312 is in a horizontal state. When the positioning slot of the rotating shaft 120 is not aligned with the limiting rod 312, under the limiting action of the sliding rod 311 and the limiting rod 312, the top of the rotating shaft 120 cannot abut against the inner top of the limiting column 130. Then rotate the rotating shaft 120 to drive the positioning slot to rotate so that the positioning slot is aligned with the limiting rod 312, and then move the rotating shaft 120 to achieve the top of the rotating shaft 120 Abut against the inner top of the limiting column 130, since the positioning slot is aligned parallel to the through slot opened on the rotating shaft 120, an accurate position reference is provided for the subsequent accurate insertion of the clamping rod 210 into the through slot.

[0029] Figure 8 and Fig. 9 As shown, after the rotating shaft 120 is inserted into the limiting column 130, as shown by arrow a, the clamping rod 210 moves to cooperate with the driving mechanism 400, driving the driving mechanism 400 to move as shown by arrow b, as shown by arrow d, driving the limiting rod 312 to rotate from the initial horizontal state to the expanded state, so that the limiting rod 312 can be respectively clamped into the grooves of the limiting column 130 and the rotating shaft 120, thereby achieving further clamping and improving the stability after clamping. At the same time, the limiting rod 312 is clamped into the limiting column 130. During the operation of the equipment, the rotating shaft 120 will be subjected to various external forces, and these external forces can be transmitted to the limiting column 130 through the limiting rod 312. The limiting column 130 is closely connected to the mounting block 110, which can further disperse and transmit the force to the supporting structure of the entire equipment, thereby preventing the rotating shaft 120 from being damaged by excessive force alone.

[0030] When the sliding rod 311 moves and drives the limiting rod 312 to move, the limiting rod 312 can be rotated and snapped into the grooves defined by the limiting column 130 and the rotating shaft 120, such as Figure 5 and Figure 8As shown, a plurality of fixing plates 320 are fixedly connected to the outer wall of the mounting rod 310, and pillars 321 are fixedly connected to the fixing plates 320. A plurality of limiting rods 312 are provided with through slots, and the plurality of pillars 321 are slidably connected to adjacent through slots.

[0031] The slot is set at an angle; when the sliding rod 311 moves toward the outside of the mounting rod 310, it drives the limiting rod 312 to move, but under the limitation of the pillar 321 and the slot, the limiting rod 312 moves and expands outward at the same time. When the limiting rod 312 expands, it can be respectively snapped into the grooves of the limiting column 130 and the rotating shaft 120, so that various external forces borne by the rotating shaft 120 can be transmitted to the limiting column 130 through the limiting rod 312, and the limiting column 130 is closely connected to the mounting block 110, so that the force can be further dispersed and transmitted to the supporting structure of the entire equipment, avoiding the rotating shaft 120 from being damaged by excessive force alone, and the limiting rod 312 is snapped into the groove of the rotating shaft 120 to achieve further snapping, thereby improving the stability after snapping.

[0032] In order to drive the slide bar 311 to move, Figure 4-Figure 5 As shown, the specific structure of the driving mechanism 400 is further disclosed. The driving mechanism 400 at least includes a T-shaped column 410 slidably connected to the inner wall of the mounting rod 310, and one side of the T-shaped column 410 is located outside the mounting rod 310, and the side of the T-shaped column 410 located inside the mounting rod 310 is fixedly connected to an extrusion block 411, and the inner wall of the mounting rod 310 is fixedly connected to a No. 2 return spring 412, and the side of the No. 2 return spring 412 away from the mounting rod 310 is fixedly connected to the extrusion block 411, and the No. 2 return spring 412 is sleeved on the outer wall of the T-shaped column 410. When the clamping rod 21 When the T-shaped column 410 is squeezed, the No. 2 return spring 412 is deformed. When the clamping rod 210 does not squeeze the T-shaped column 410, the No. 2 return spring 412 can restore the deformation and drive the T-shaped column 410 to return to its original position. When the clamping rod 210 is connected to the inside of the rotating shaft 120, the clamping rod 210 squeezes the T-shaped column 410, as shown by arrow b, and drives the T-shaped column 410 to move upward, thereby driving the squeezing block 411 to move upward, as shown by arrow c, so that the connecting block 420 squeezes the sliding rod 311, and drives the sliding rod 311 to move to the outside of the mounting rod 310.

[0033] When the connecting block 420 does not press the sliding rod 311, the sliding rod 311 needs to be reset and moved, such as Figure 5As shown, two circular rings 330 are fixedly connected to the outer wall of the mounting rod 310, and two No. 1 return springs 331 are slidably connected to adjacent circular rings 330 respectively. The circular rings 330 are arranged so that the slide bar 311 can slide inside the circular rings 330, providing guidance for the movement of the slide bar 311. One side of the two circular rings 330 is fixedly connected to the No. 1 return spring 331, and the side of the two No. 1 return springs 331 away from the circular rings 330 is fixedly connected to the outer wall of the adjacent slide bar 311. When the slide bar 311 is squeezed and moved by the connecting block 420, the No. 1 return spring 331 is deformed. When the subsequent connecting block 420 does not squeeze the slide bar 311, the force of the No. 1 return spring 331 to restore the deformation can drive the slide bar 311 to return to its original position.

[0034] In order to make the limiting rod 312 more firmly connected to the groove of the limiting column 130 and the rotating shaft 120, Figure 8 As shown, a slot 131 is provided in the grooves of the limit column 130 and the rotating shaft 120, and the slot 131 is snap-fitted with the bent portion of the limit rod 312. When the two limit rods 312 are snap-fitted into the grooves of the limit column 130 and the rotating shaft 120 respectively, the bent portion of the limit rod 312 is snap-fitted into the slot 131, which can effectively prevent the limit rod 312 from accidentally falling out of the grooves of the limit column 130 and the rotating shaft 120, and further ensure the stability of the snap-fitting between the limit rod 312, the limit column 130 and the rotating shaft 120.

[0035] Considering the need to drive the clamping rod 210 to move, the clamping rod 210 and the rotating shaft 120 are clamped and fixed. Figure 4 As shown, the inner wall of the mounting block 110 is rotatably connected with a bidirectional screw rod 140, and one side of the bidirectional screw rod 140 passes through the mounting block 110. The bidirectional screw rod 140 is located on one side inside the mounting block 110 and is threadedly connected to two sliders 141, and the two sliders 141 are respectively fixedly connected to adjacent clamping rods 210 on one side away from the bidirectional screw rod 140. The slider 141 is driven to move linearly on the bidirectional screw rod 140 by manually rotating the bidirectional screw rod 140, thereby driving the two clamping rods 210 to move closer to each other, so that the clamping rod 210 moves and passes through the limiting groove of the limiting column 130 and the through groove of the rotating shaft 120 in turn, and then is clamped into the inside of the rotating shaft 120, so as to fix the rotating shaft 120 and the limiting column 130.

[0036] In order to ensure the stability of the extrusion block 411 when it moves, Figure 5-Figure 6 As shown, a rectangular groove is opened inside the mounting rod 310, and a connecting block 420 is slidably connected to the inner wall of the rectangular groove, and the connecting block 420 is fixedly connected to the extrusion block 411 on the side away from the slide groove. When the T-shaped column 410 moves, it drives the extrusion block 411 to move, thereby driving the connecting block 420 to slide in the slide groove, thereby providing a stable motion guide for the movement of the extrusion block 411.

[0037] Working principle: When the new rotating shaft 120 needs to be snap-fitted and fixed to the mounting block 110, the rotating shaft 120 is first inserted into the limiting column 130. At this time, the limiting rod 312 is in a horizontal state. When the positioning slot of the rotating shaft 120 is not aligned with the limiting rod 312, under the limiting action of the sliding rod 311 and the limiting rod 312, the top of the rotating shaft 120 cannot abut against the inner top of the limiting column 130. Then, the rotating shaft 120 is rotated to drive the positioning slot to rotate so that the positioning slot is aligned with the limiting rod 312, and then the rotating shaft 120 is moved to achieve the top of the rotating shaft 120 abutting against the inner top of the limiting column 130. Since the positioning slot is parallel to the through slot opened on the rotating shaft 120 and is aligned, a precise position reference is provided for the subsequent accurate insertion of the clamping rod 210 into the through slot.

[0038] After the rotating shaft 120 is inserted into the limiting column 130, the bidirectional screw rod 140 is then manually rotated to drive the slider 141 to move linearly on the bidirectional screw rod 140, thereby driving the two clamping rods 210 to move closer together, so that the clamping rods 210 move through the limiting groove of the limiting column 130 and the through groove of the rotating shaft 120 in turn, and then are clamped into the inside of the rotating shaft 120 to fix the rotating shaft 120 and the limiting column 130.

[0039] When the clamping rod 210 is clamped into the interior of the rotating shaft 120, the clamping rod 210 squeezes the T-shaped column 410, driving the T-shaped column 410 to move upward, thereby driving the squeezing block 411 to move upward, so that the connecting block 420 squeezes the sliding rod 311, driving the sliding rod 311 to move outside the installation rod 310, and the movement of the sliding rod 311 drives the limiting rod 312 to move, but under the limitation of the support column 321 and the through groove, the limiting rod 312 expands outward while moving, and when the limiting rod 312 expands, it can be clamped to the limiting column 130 and the rotating shaft 120 respectively. In the groove of shaft 120, the limit rod 312 is snapped into the limit column 130. During the operation of the equipment, the rotating shaft 120 will be subjected to various external forces, which can be transmitted to the limit column 130 through the limit rod 312. The limit column 130 is closely connected to the mounting block 110, which can further disperse the force and transmit it to the supporting structure of the entire equipment, thereby preventing the rotating shaft 120 from being damaged by excessive force alone. The limit rod 312 is snapped into the groove of the rotating shaft 120 to achieve further snapping, thereby improving the stability after snapping.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A horizontal spiral drilling machine capable of quickly replacing a drill bit, comprising a machine body (100), a mounting block (110) being fixedly connected to the machine body (100), a rotating shaft (120) being adapted to be slidably engaged on one side of the mounting block (110), a drill bit body (121) being fixedly connected to a side of the rotating shaft (120) away from the mounting block (110), and a limiting column (130) being fixedly connected to an inner wall of the mounting block (110), characterized in that: A clamping mechanism (200) for fixing the rotating shaft (120) is provided inside the mounting block (110), and an auxiliary positioning mechanism (300) and a driving mechanism (400) are provided inside the mounting block (110); When the clamping mechanism (200) is not fixed to the rotating shaft (120), the auxiliary positioning mechanism (300) is in a horizontal state and is used to assist the clamping mechanism (200) in clamping the rotating shaft (120); when the clamping mechanism (200) is clamped to fix the rotating shaft (120), the clamping mechanism (200) drives the driving mechanism (400) to squeeze the auxiliary positioning mechanism (300) to switch from a horizontal state to an expanded state, so that the auxiliary positioning mechanism (300) can limit the rotating shaft (120) and the limiting column (130) at the same time; The clamping mechanism (200) comprises two clamping rods (210) slidably connected to the inner wall of the mounting block (110), and the two clamping rods (210) are symmetrically arranged, the outer wall of the limiting column (130) is symmetrically provided with limiting grooves, and the size of the limiting grooves is adapted to the size of the clamping rods (210), and the rotating shaft (120) is symmetrically provided with through grooves, and the size of the through grooves is the same as the size of the limiting grooves; The auxiliary positioning mechanism (300) comprises at least a mounting rod (310) fixedly connected to the inner wall of the mounting block (110), the mounting rod (310) extending to be arranged inside the limiting column (130), the inner wall of the mounting rod (310) being slidably connected to two sliding rods (311), and the two sliding rods (311) being symmetrically arranged on both sides of the mounting rod (310), a positioning groove being provided on one side of the rotating shaft (120) abutting against the limiting column (130), the outer walls of the two sliding rods (311) being rotatably connected to two limiting rods (312), the inside of the limiting column (130) and the inside of the positioning groove of the rotating shaft (120) being provided with grooves, the two grooves being arranged in alignment, and the limiting rods (312) being snap-fitted with the grooves.

2. The horizontal spiral drilling machine with a quick drill bit change according to claim 1, characterized in that: A plurality of fixing plates (320) are fixedly connected to the outer wall of the mounting rod (310), and pillars (321) are fixedly connected to the fixing plates (320). Through slots are formed on the plurality of limiting rods (312), and the plurality of pillars (321) are slidably connected to adjacent through slots. The through groove is arranged obliquely.

3. The horizontal spiral drilling machine with a quick drill bit change according to claim 2, characterized in that: The driving mechanism (400) at least comprises a T-shaped column (410) slidably connected to the inner wall of the mounting rod (310), and one side of the T-shaped column (410) is located outside the mounting rod (310), and the side of the T-shaped column (410) located inside the mounting rod (310) is fixedly connected to an extrusion block (411), and the inner wall of the mounting rod (310) is fixedly connected to a No. 2 return spring (412), and the side of the No. 2 return spring (412) away from the mounting rod (310) is fixedly connected to the extrusion block (411), and the No. 2 return spring (412) is sleeved on the outer wall of the T-shaped column (410).

4. The horizontal spiral drilling machine with a quick drill bit change according to claim 3, characterized in that: Two circular rings (330) are fixedly connected to the outer wall of the mounting rod (310), and two No. 1 return springs (331) are respectively slidably connected to adjacent circular rings (330), one side of the two circular rings (330) is fixedly connected to the No. 1 return spring (331), and the sides of the two No. 1 return springs (331) away from the circular rings (330) are fixedly connected to the outer wall of the adjacent sliding rod (311).

5. The horizontal spiral drilling machine with a quick drill bit change according to claim 1, characterized in that: A clamping groove (131) is provided in the groove of the limiting column (130) and the rotating shaft (120), and the clamping groove (131) is clamped and adapted to the bent portion of the limiting rod (312).

6. The horizontal spiral drilling machine with a quick drill bit change according to claim 1, characterized in that: A bidirectional screw rod (140) is rotatably connected to the inner wall of the mounting block (110), and one side of the bidirectional screw rod (140) passes through the mounting block (110). Two sliders (141) are threadedly connected to one side of the bidirectional screw rod (140) located inside the mounting block (110), and the two sliders (141) are fixedly connected to adjacent clamping rods (210) at the sides away from the bidirectional screw rod (140).

7. The horizontal spiral drilling machine with a quick drill bit change according to claim 4, characterized in that: A rectangular groove is provided inside the installation rod (310), a connecting block (420) is slidably connected to the inner wall of the rectangular groove, and a side of the connecting block (420) away from the sliding groove is fixedly connected to the extrusion block (411).

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