Drilling equipment for road construction

Abstract

A drilling device for road construction comprises a machine body, a plurality of drilling teeth are evenly arranged in a ring at one end of a drill barrel away from the machine body, a saw rope is slidably installed in a through hole, a limiting mechanism matching the saw rope is arranged in the drill barrel, a groove is arranged on the inner side of a winding wheel, a plurality of arc-shaped locking grooves matching the arc-shaped locking piece are arranged on the inner wall of the groove, a rectangular block is slidably installed inside a rectangular cavity, a connecting shaft extending out of the mounting block is fixedly connected to the rectangular block, the connecting shaft is slidably connected to the mounting block, the machine body is provided with a gear ring meshing with a bevel gear, and the drill barrel is also equipped with a pulling mechanism for canceling the meshing of the bevel gear and the gear ring. When performing non-through drilling on a road surface, the device can form regular circular holes through a rotating drum, and can use the rotation of the rotating drum to realize the cutting of the cylindrical concrete block in the rotating drum by the saw rope. The drilled holes have regular shapes, which reduces the workload of the staff and increases the work efficiency.

Description

Technical Field

[0001] The invention belongs to the field of road construction, and in particular relates to a drilling device for road construction. Background Art

[0002] In the various construction processes of road repair, road construction and road pile foundation, it is usually necessary to drill holes in the road surface. Most of the current road surfaces are built with materials such as concrete, and the road surface hardness is relatively large. Therefore, the existing drilling method usually draws a circle at the position where the road surface needs to be drilled, and then uses an electric pick, an electric hammer and other equipment to drill holes. Although this method can effectively break the road surface holes, the holes formed are often not very regular, and multiple fine grinding is required to form regular circular holes. The drilling operation takes a long time. Although the existing drill barrel can open regular circular holes, the existing drill barrel can only open through holes. If a drill barrel is used for non-through drilling, a cylindrical concrete column will be formed on the road surface. Since this concrete column is connected to the main body, the concrete column is not easy to take out, and the staff needs to use other equipment to break and take out the cylindrical concrete column, which reduces the construction efficiency. Moreover, it is very troublesome to take out the concrete column from the drill hole after it is broken, and it is difficult to take it out cleanly. Summary of the invention

[0003] The invention solves the shortcomings of the prior art and provides a road construction drilling device which can directly cut off a cylindrical concrete column in a drill tube and facilitates the concrete column to be taken out from a hole.

[0004] To achieve the above-mentioned purpose, the present invention first proposes a drilling device for road construction, including a machine body, a drill barrel detachably mounted on an output shaft of the machine body, the machine body drives the drill barrel to rotate through the output shaft to achieve drilling, the drill barrel includes a drilling end away from the machine body and a connecting end close to the machine body, a plurality of drilling teeth are arranged on the end of the drilling end of the drill barrel, an annular groove is arranged on the inner wall of the drill barrel near the drilling teeth, a through hole is arranged in the inner wall of the drill barrel along the axial direction of the drill barrel, the through hole connects the connecting end of the drill barrel with the annular groove, a saw rope is slidably installed in the through hole, one end of the saw rope is fixed in the annular groove, and the fixed position is close to the through hole, The middle part of the saw rope is arranged in the annular groove and forms a loop around the annular groove. The other end of the saw rope passes through the through hole and comes out from the drill barrel connecting end. A locking mechanism linked to the drill barrel is fixed on the connecting end of the drill barrel. After passing through the drill barrel connecting end, the saw rope is connected with the locking mechanism. A limiting mechanism matching the saw rope is provided in the annular groove. When the saw rope is in the initial state, the limiting mechanism keeps the saw rope in the annular groove and the locking mechanism does not work. When the saw rope is in the working state, the limiting mechanism does not restrict the movement of the saw rope. The locking mechanism continuously contracts the saw rope, so that the annular groove saw rope forms a loop that is tightened and abuts against the outer wall of the concrete column in the drill barrel.

[0005] In this embodiment, the locking mechanism includes a support frame, a winding wheel, a rotating shaft and a pulling mechanism, the support frame is installed on the connecting end of the drill barrel and is arranged below the through hole, the support frame is rotatably equipped with a winding wheel through a bearing, the central axis of the winding wheel is arranged along the radial direction of the drill barrel, the saw rope passes through the through hole from the connecting end of the drill barrel and is fixed on the winding wheel, an axial hole is provided at the central axis of the winding wheel, a rotating shaft is installed in the axial hole of the winding wheel through a bearing, the rotating shaft and the winding wheel are arranged coaxially, a circular groove is coaxially opened on the end of the winding wheel facing the output shaft of the machine body, a plurality of arc-shaped locking grooves are provided on the winding wheel and on the inner side wall of the groove, a rotating block with a thickness matching the depth of the groove is coaxially arranged in the groove, the outer diameter of the rotating block is smaller than the inner diameter of the groove, at least one first step hole arranged radially is provided on the side wall of the rotating block facing the arc-shaped locking groove, an elastic locking tongue mechanism is provided in the first step hole, the elastic locking tongue mechanism includes an arc-shaped locking piece matching the size of the arc-shaped locking groove, and in the initial state, the arc-shaped locking piece presses against the arc-shaped locking groove The invention relates to a motor drive mechanism for driving a motor, wherein the motor drive mechanism comprises a plurality of motors ...

[0006] In this embodiment, the elastic locking tongue mechanism includes a first spring and a T-shaped piece arranged in the first step hole, one end of the first spring is fixed to the bottom of the first step hole, and the other end is fixed with a T-shaped piece, the T-shaped end of the T-shaped piece is slidably connected in the first step hole, and is limited by the step on the opening end of the first step hole, the other end of the T-shaped piece extends out of the first step hole and has an arc-shaped locking piece matching the size of the arc-shaped locking groove fixed thereon, and in the initial state, under the action of the first spring, the arc-shaped locking piece is pressed into the arc-shaped locking groove, so that the winding wheel is linked with the rotating block.

[0007] In this embodiment, the pulling mechanism includes a fixed block and a mounting plate, the fixed block is fixed on the drill barrel connecting end, the fixed block is arranged on the axial extension line of the bevel gear, and is arranged close to the outer side of the bevel gear, a receiving groove is provided in the fixed block, a window is provided on the side of the fixed block facing the bevel gear to connect the outside with the receiving groove, and an inlet connected to the receiving groove is provided on the other side of the fixed block, a mounting plate is slidably inserted in the receiving groove of the fixed block, the mounting plate matches the size of the receiving groove, a magnet matching the position and size of the window is fixed on the mounting plate facing the bevel gear, and an iron block matching the magnet is provided on the side of the bevel gear facing the fixed block.

[0008] In this embodiment, the mounting plate is positioned in the fixing block by a positioning assembly, the positioning assembly includes a second step hole arranged on the mounting plate, a T-shaped locking piece arranged in the second step hole and a fourth spring, a locking hole corresponding to the second step hole is arranged in the receiving groove of the fixing block, the T-shaped end of the T-shaped locking piece is arranged in the second step hole and is slidably connected to the inner wall of the second step hole, the other end of the T-shaped locking piece can extend out of the second step hole to form a locking tongue corresponding to the locking hole, and a limiting spring is arranged on the open end of the second step hole to prevent the T-shaped locking piece from sliding out of the second step hole A step is provided, one end of the fourth spring is fixed to the bottom of the second step hole, and the other end is fixed to the T-shaped end of the T-shaped locking piece. An inner cavity arranged perpendicular to the second step hole is also provided on the mounting plate and below the second step hole. A winding shaft is rotatably assembled inside the inner cavity. One end of the winding shaft extends out of the mounting plate, and a rotating handle for conveniently rotating the winding shaft is fixed thereon. The inner cavity is connected to the bottom of the second step hole through a wire passing hole. The lower side of the T-shaped end of the T-shaped locking piece is fixedly connected to one end of the winding wire, and the other end of the winding wire passes through the wire passing hole and is fixed to the winding shaft.

[0009] In this embodiment, a detachable cover shell for covering the groove is installed on the outer side of the winding wheel.

[0010] In this embodiment, a handle is installed at the bottom of the body, and an armrest is installed at the side.

[0011] In this embodiment, the limiting mechanism includes a plurality of limiting components, which are symmetrically arranged in the inner wall of the drill barrel with the central axis of the drill barrel as the center. The limiting components include a connecting hole arranged in the inner wall of the drill barrel and arranged along the axial direction, and a cavity connected to the connecting hole. The inner diameter of the cavity is larger than the inner diameter of the connecting hole, and the height of the cavity is larger than the diameter of the drill barrel. The cavity is close to the connecting end of the drill barrel, and the connecting hole is connected to the annular groove. A pull wire is arranged in the connecting hole, and a slider matching the size of the cavity is equipped in the cavity. The slider is slidably connected to the inner wall of the cavity, one end of the pull wire is fixedly connected to the slider, and the other end is fixed to the saw rope. A third spring is also provided in the cavity, and the third spring is sleeved on the outside of the pull wire. One end of the third spring is fixed to the slider, and the other end is fixed at the connection between the cavity and the connecting hole.

[0012] By adopting the above structure, the device utilizes the rotational force of the output shaft of the machine body to drive the drill barrel to rotate, and continuously contracts the saw rope to abut against the outer wall of the concrete column in the drill barrel through the locking mechanism, and realizes the cutting of the concrete column through high-speed friction between the saw rope and the concrete column. In this way, when performing non-through drilling, the cylindrical concrete column inside the drill barrel can be cut off without the use of other additional equipment, thereby reducing the working steps and workload of the staff and increasing the work efficiency. In addition, the rotation of the drill barrel is utilized as a whole to realize the cutting of the cylindrical concrete column by the saw rope, and no other electrical components need to be added. The design cost is low and the practicability is strong.

[0013] In summary, this equipment can cut off the cylindrical concrete column inside the drill tube when performing non-through drilling without using other additional equipment, thereby reducing the working steps and workload of the staff and increasing work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The three-dimensional Figure 1 ;

[0015] Figure 2 The three-dimensional Figure 2 ;

[0016] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0017] Figure 4 It is a structural schematic diagram of the drill tube of the present invention;

[0018] Figure 5 for Figure 4 The enlarged view of point B in the middle;

[0019] Figure 6 It is a schematic diagram of the cross-sectional structure of the drill tube of the present invention;

[0020] Figure 7 for Figure 6 Enlarged view of point C in the middle;

[0021] Figure 8 It is a schematic cross-sectional structure diagram of the support frame, winding wheel and rotating block of the present invention;

[0022] Fig. 9 It is a schematic diagram of a partial cross-sectional structure of the present invention;

[0023] Fig.10 It is a schematic diagram of the cross-sectional structure of the mounting plate of the present invention;

[0024] Fig.11 It is a structural schematic diagram of the fixing block of the present invention.

[0025] In the attached drawings, 1, machine body; 11, drill tube; 12, drilling teeth; 2, annular groove; 21, through hole; 22, saw rope; 3, support frame; 31, winding wheel; 32, rotating shaft; 321, groove; 33, rotating block; 34, first step hole; 35, first spring; 36, T-shaped piece; 37, arc-shaped locking piece; 38, arc-shaped locking groove; 4, mounting block; 41, rectangular cavity; 42, rectangular block; 43, connecting shaft; 44, second spring; 45, bevel gear; 46, gear ring ; 5. Cavity; 51. Slider; 52. Third spring; 53. Connecting hole; 54. Pull wire; 6. Fixing block; 61. Storage slot; 62. Mounting plate; 63. Magnet; 64. Window; 65. Iron block; 7. Second step hole; 71. Fourth spring; 72. T-shaped lock; 721. Locking hole; 73. Inner cavity; 74. Winding shaft; 75. Wire hole; 76. Winding wire; 77. Turning handle; 8. Handle; 81. Cover; 82. Grip; 83. Armrest. DETAILED DESCRIPTION

[0026] 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.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] like Figures 1 to 11As shown, the present invention provides a drilling device for road construction, including a machine body 1, on which an output shaft of the machine body 1 is detachably mounted a drill barrel 11, and the machine body 1 drives the drill barrel 11 to rotate through the output shaft to achieve drilling, the drill barrel 11 includes a drilling end away from the machine body 1 and a connecting end close to the machine body 1, a plurality of drilling teeth 12 are arranged on the end of the drilling end of the drill barrel 11, an annular groove 2 is arranged on the inner wall of the drill barrel 11 near the drilling teeth 12, a through hole 21 is arranged in the inner wall of the drill barrel 11 along the axial direction of the drill barrel 11, the inner diameter of the through hole 21 is larger than the outer diameter of the saw rope 22, the through hole 21 connects the connecting end of the drill barrel 11 with the annular groove 2, a saw rope 22 is slidably installed in the through hole 21, one end of the saw rope 22 is fixed in the annular groove 2 and is arranged near the through hole 21, and the middle part of the saw rope 22 is arranged in the annular groove 2. The saw rope 22 is in the annular groove 2 and is formed as a ferrule around the annular groove 2. The other end of the saw rope 22 passes through the through hole 21 and comes out from the connecting end of the drill barrel 11. A limiting mechanism is provided in the annular groove 2. When the saw rope 22 is in the initial state, the limiting mechanism keeps the saw rope 22 in the annular groove 2. When the saw rope 22 is in the working state, the limiting mechanism does not limit the movement of the saw rope 22. A locking mechanism linked to the drill barrel is fixed on the connecting end of the drill barrel 11. The saw rope 22 passes through the through hole 21 from the connecting end of the drill barrel 11 and is connected to the locking mechanism. When the saw rope 22 is in the working state, the locking mechanism continuously contracts the saw rope 22 so that the ferrule in the annular groove 2 is tightened and abuts against the outer wall of the concrete column in the drill barrel 11. At this time, the drill barrel 11 is driven to rotate again through the output shaft of the machine body 1, and the saw rope 22 rubs against the concrete column to achieve cutting of the concrete column.

[0029] The locking mechanism includes a support frame 3, a winding wheel 31, a rotating shaft 32 and a pulling mechanism. The support frame 3 is installed on the connecting end of the drill barrel 11 and at the position of the through hole 21. The winding wheel 31 is rotatably mounted on the support frame 3 through a bearing. The central axis of the winding wheel 31 is arranged radially along the drill barrel 11. The saw rope 22 passes through the through hole 21 from the connecting end of the drill barrel 11 and is fixed on the winding wheel 31. An axial hole is provided at the central axis of the winding wheel 31. A rotating shaft 32 is installed in the axial hole of the winding wheel 31 through a bearing. The rotating shaft 32 is arranged coaxially with the winding wheel 31. A circular groove 321 is provided on one end of the winding wheel 31 facing the output shaft of the machine body 1. A plurality of arc-shaped locking grooves 38 are provided on the inner side wall of the groove 321 on the winding wheel 31. The locking groove 38 is a semicircular groove, and a rotating block 33 with a thickness matching the depth of the groove 321 is coaxially installed in the groove 321. The outer diameter of the rotating block 33 is smaller than the inner diameter of the groove 321. A first step hole 34 arranged radially along the rotating block 33 is provided on the side wall of the rotating block 33 facing the arc-shaped locking groove 38. A first spring 35 matching the size of the first step hole 34 is provided in the first step hole 34. One end of the first spring 35 is fixed to the bottom of the first step hole 34, and a T-shaped piece 36 is fixed on the other end. The outer diameter of the T-shaped end of the T-shaped piece 36 matches the inner diameter of the first step hole 34. The T-shaped end of the T-shaped piece 36 is slidably connected in the first step hole 34, and is limited by the step on the open end of the first step hole 34. , to prevent the T-shaped end from sliding out of the first step hole 34, the other end of the T-shaped piece 36 extends out of the first step hole 34, and an arc-shaped lock piece 37 matching the size of the arc-shaped lock groove 38 is fixed on it. In the initial state, under the action of the first spring 35, the arc-shaped lock piece 37 presses on the arc-shaped lock groove 38, so that the winding wheel 31 is linked with the rotating block 33, one end of the rotating shaft 32 is fixedly linked with the rotating block 33, and the other end extends out of the winding wheel 31, and a handle 8 is fixed on it. A mounting block 4 is coaxially fixed on the side of the rotating block 33 facing the output shaft of the body 1, and a rectangular cavity 41 is provided in the mounting block 4 along the central axis, and a rectangular block 42 matching the size of the rectangular cavity 41 is slidably assembled inside the rectangular cavity 41, and a rectangular cavity 41 is provided on the opening end The step limits the rectangular block 42 to prevent the rectangular block 42 from sliding out of the rectangular cavity 41. A connecting shaft 43 arranged axially along the rotating shaft 32 is fixed on the rectangular block 42. The end of the connecting shaft 43 extends out of the mounting block 4 and a bevel gear is coaxially mounted thereon. A second spring 44 is sleeved on the part of the connecting shaft 43 in the rectangular cavity 41. One end of the second spring 44 is fixed on the rectangular block 42, and the other end is fixed on the step at the open end of the rectangular cavity 41. A gear ring 46 matching the bevel gear 45 is fixed on the body 1 on the side facing the bottom of the drill barrel 11. A pulling mechanism for controlling the meshing of the bevel gear 45 and the gear ring 46 is fixed on the drill barrel 11. When the saw rope 22 is in working state, the bevel gear 45 meshes with the gear ring 46.

[0030] The limiting mechanism includes a plurality of limiting components, which are symmetrically arranged in the inner wall of the drill tube 11 with the central axis of the drill tube 11 as the center. The limiting components include a connecting hole 53 arranged in the inner wall of the drill tube 11 and arranged along the axial direction, and a cavity 5 connected to the connecting hole 53. The inner diameter of the cavity 5 is larger than the inner diameter of the connecting hole 53, and the height of the cavity 5 is larger than the diameter of the drill tube 11. The cavity 5 is close to the connecting end of the drill tube 11, and the connecting hole 53 is connected to the annular groove 2. A pull wire 54 is arranged in the connecting hole 53, and a hole 54 with a size corresponding to the size of the cavity is assembled in the cavity 5. A matching slider 51, the slider 51 is slidably connected to the inner wall of the cavity 5, one end of the pull wire 54 is fixedly connected to the slider 51, and the other end is fixed to the back of the saw rope 22. A third spring 52 is also provided in the cavity 5, the third spring 52 is sleeved on the outside of the pull wire 54, one end of the third spring 52 is fixed to the slider 51, and the other end is fixed to the connection between the cavity 5 and the connecting hole 53. When the saw rope 22 is in the initial state, the third spring 52 presses the slider 51 against the bottom of the cavity 5, and the pull wire 54 tightens the saw rope 22 and limits it in the annular groove 2;

[0031] When the saw rope 22 is in working state, the locking mechanism will retract the saw rope 22 so that the ring formed by the saw rope 22 in the annular groove 2 is tightened. At this time, the saw rope 22 pulls the pull wire 54, and the pull wire 54 drives the slider 51 to move in the cavity 5, thereby compressing the third spring 52. In this way, when the saw rope 22 is retracted, the pull wire 54 will not limit the retraction of the saw rope 22. A plurality of limiting components are designed. In this embodiment, four are provided. The limiting components limit the saw rope 22 in the annular groove 2 from four directions, thereby preventing the saw rope 22 from extending out of the annular groove 2 when the drill tube 11 is working;

[0032] When the saw rope 22 completes cutting the concrete column, the operator grips the handle 8 and turns it in the opposite direction, and at the same time moves the T-shaped piece 36, so that the arc locking piece 37 disengages from the arc locking groove 38. Without the locking of the arc locking piece 37, the saw rope 22 wound on the winding wheel 3 can rotate freely under the tension. At this time, under the elastic force of the third spring 52, the third spring 52 pushes the sliding 51 back to its original position, thereby driving the saw rope 22 to return to the annular groove 2 through the pull wire 54.

[0033] The pulling mechanism includes a fixed block 6 and a mounting plate 62, wherein the fixed block 6 is fixed to the connecting end of the drill tube 11, and the fixed block 6 is arranged on the axial extension line of the bevel gear 45 and is arranged close to the outer side of the bevel gear 45. A receiving groove 61 is provided in the fixed block 6, and a window 64 is provided on the side of the fixed block 6 facing the bevel gear 45 to connect the outside with the receiving groove 61, and an inlet connected with the receiving groove 61 is provided on the other side of the fixed block 6. A mounting plate 62 is slidably inserted in the receiving groove 61 of the fixed block 6, and the size of the mounting plate 62 matches the size of the receiving groove 61. The mounting plate 62 is positioned in the fixed block 6 by a positioning assembly, and a magnet 63 matching the position and size of the window 64 is provided on the mounting plate 62 facing the bevel gear 45, and an iron block 65 matching the magnet 63 is provided on the side of the bevel gear 45 facing the fixed block 6, and the suction force of the magnet 63 on the iron block is much greater than the elastic force of the second spring 44.

[0034] When the saw rope 22 is in the initial state, the mounting plate 62 is inserted into the receiving groove 61, and the iron block 65 is adsorbed by the magnet 63, so that the bevel gear 45 moves toward the side of the fixed block 6. At this time, the bevel gear 45 compresses the second spring 44 under the action of the magnetic force, so that the bevel gear 45 and the gear ring 46 are disengaged. When the saw rope 22 is in the working state, the mounting plate 62 is taken out of the receiving groove 61. At this time, the bevel gear 45 is reset under the action of the second spring 44 and maintains the meshing state with the gear ring 46.

[0035] The positioning assembly includes a second step hole 7 arranged on the mounting plate 62, a T-shaped locking piece 72 arranged in the second step hole 7, and a fourth spring 71. The receiving groove 61 of the fixing block 6 is provided with a locking hole 721 corresponding to the second step hole 7. The T-shaped end of the T-shaped locking piece 72 is arranged in the second step hole 7 and is slidably connected to the inner wall of the second step hole 7. The other end of the T-shaped locking piece 72 can extend out of the second step hole 7 to form a locking tongue corresponding to the locking hole 721. A limiting step is provided on the opening end of the second step hole 7 to prevent the T-shaped locking piece 72 from sliding out of the second step hole 7. One end of the fourth spring 71 is fixed The mounting plate 62 is provided with an inner cavity 73 which is perpendicular to the second step hole 7 and is fixed at the bottom of the second step hole 7, and the other end is fixed to the T-shaped end of the T-shaped locking piece 72. The mounting plate 62 is provided with an inner cavity 73 which is perpendicular to the second step hole 7 and a winding shaft 74 is rotatably mounted inside the inner cavity 73. One end of the winding shaft 74 extends out of the mounting plate 62 and is fixed with a rotating handle 77 which is convenient for rotating the winding shaft 74. The inner cavity 73 is connected to the bottom of the second step hole 7 through a wire hole 75. The lower side of the T-shaped end of the T-shaped locking piece 72 is fixedly connected to one end of a winding wire 76, and the other end of the winding wire 76 passes through the wire hole 75 and is fixed to the winding shaft 74.

[0036] After the mounting plate 62 is inserted into the receiving groove 61, the T-shaped locking piece 72 is compressed under the action of the fourth spring 71. When the mounting plate 62 is inserted into place, the locking tongue end of the T-shaped locking piece 72 is just placed in the locking hole 721, thereby positioning the mounting plate 62. When the mounting plate 62 needs to be removed, the staff rotates the turning handle 77, and the turning handle 77 drives the winding shaft 74 to rotate. The winding shaft 74 winds the winding line 76, so that the T-shaped locking piece 72 can be pulled downward, so that the fourth spring 71 is compressed, and the locking tongue end of the T-shaped locking piece 72 is driven to disengage from the locking hole 721. At this time, the mounting plate 62 can be taken out of the receiving groove 61. After the mounting plate 62 is taken out of the receiving groove 61, the fourth spring 71 can drive the winding shaft 74 to reset and rotate, thereby resetting the turning handle 77.

[0037] In this embodiment, a detachable cover 81 is installed on the outside of the winding wheel 31, and the cover 81 is used to cover the groove 321. Such a design can protect the parts inside the groove 321. A handle 82 is installed on the lower rear side of the body 1, and an armrest 83 is installed on the side of the body 1. The design of the handle 82 and the armrest 83 can improve the staff's grasp of the body 1.

[0038] The specific working principle is as follows:

[0039] When performing through drilling, the worker starts the machine body 1, drives the drill tube 11 to rotate at high speed through the output shaft, and then presses the end of the drill tube 11 on the surface of the concrete column, and then can drill into the concrete column. There will be a cylindrical concrete column inside the drill tube 11. After the drill tube 11 completely passes through the concrete column, the drilling work is completed, and the cylindrical concrete column inside the drill tube 11 will also fall off from the concrete column body. At this time, the limit mechanism can keep the saw rope 22 in the annular groove 2;

[0040] When performing non-through drilling,

[0041] The machine body 1 is started, and the drill tube 11 is driven to rotate at high speed through the output shaft, and then the end of the drill tube 11 is pressed on the surface of the concrete column to drill. When the drill tube 11 drills to a suitable depth, the machine body 1 stops working. At this time, the staff takes out the mounting plate 62 and controls the pulling mechanism to cancel the limit on the bevel gear 45. At this time, the bevel gear 45 is driven to mesh with the gear ring 46 through the extension of the second spring 44, and then the machine body 1 is started again. The machine body 1 drives the drill tube 11 to rotate at high speed through the output shaft. Due to the bevel gear 45 and the gear ring When the drill tube 11 rotates at a high speed, the bevel gear 45 will rotate. The bevel gear 45 drives the mounting block 4 to rotate through the connecting shaft 43 and the rectangular block 42. When the mounting block 4 rotates, the rotating block 33 and the rotating shaft 32 will rotate. Since the arc-shaped locking member 37 is locked in the arc-shaped locking groove 38, the rotating block 33 is linked with the winding wheel 31. At this time, the winding wheel 31 winds the saw rope 22, and the saw rope 22 overcomes the limit of the limit mechanism to achieve continuous contraction of the saw rope 22, so that the loop formed by the saw rope 22 in the annular groove 2 is contracted. At the same time, since the output shaft of the machine body 1 drives the drill tube 11 to rotate at the same time, the saw rope 22 rubs against the concrete column to achieve cutting of the concrete column; when the saw rope 22 is tightened to the limit position and can no longer be tightened, the rotating block 33 continues to rotate under the action of the bevel gear 45, but the winding wheel 31 does not rotate under the action of the saw rope 22. At this time, the wall surface of the arc-shaped locking groove 38 squeezes the arc-shaped locking piece 37, and the T-shaped piece 36 is pressed under the action of the first spring 35. When moving into the first step hole 34, the arc-shaped locking piece 37 at the top of the T-shaped piece 36 is inserted into another arc-shaped locking groove 38 from one arc-shaped locking groove 38, so that when cutting, the saw rope 22 can maintain a continuous tightening force on the cut concrete column, and at the same time, it can prevent the device from getting stuck. In addition, through the buffering effect of the second spring 44 in the mounting block 4, when the arc-shaped locking piece 37 cannot be separated from the arc-shaped locking groove 38, the bevel gear 45 and the gear ring 46 can also be temporarily separated to prevent damage to the device.

[0042] Through the above-mentioned continuous process, the saw rope 22 can be rubbed around the cylindrical concrete column at high speed, thereby grinding and cutting the cylindrical concrete column until the saw rope 22 completely passes through the cylindrical concrete column, thereby completing the cutting of the cylindrical concrete column. Such a design can cut the cylindrical concrete column inside the drill barrel 11 when performing non-through drilling, without the need to use additional equipment for cutting, thereby reducing the working steps and work intensity of the staff and increasing work efficiency.

[0043] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A drilling device for road construction, comprising a machine body (1), an output shaft of the machine body (1) being detachably mounted with a drill barrel (11), the machine body (1) driving the drill barrel (11) to rotate via the output shaft to achieve drilling, the drill barrel (11) comprising a drilling end away from the machine body (1) and a connecting end close to the machine body (1), a plurality of drilling teeth (12) being arranged at the end of the drilling end of the drill barrel (11), Features: An annular groove (2) is provided on the inner wall of the drill tube (11) at a position close to the drilling teeth (12); a through hole (21) is provided in the inner wall of the drill tube (11) along the axial direction of the drill tube (11); the through hole (21) connects the connecting end of the drill tube (11) with the annular groove (2); a saw rope (22) is slidably installed in the through hole (21); one end of the saw rope (22) is fixed in the annular groove (2) and is fixed at a position close to the through hole (21); the middle part of the saw rope (22) is arranged in the annular groove (2) and is wound around the annular groove (2) to form a loop; the other end of the saw rope (22) passes through the through hole (21) and is led out from the connecting end of the drill tube (11) to the drill tube (11). The drill tube (11) is provided with a locking mechanism linked to the drill tube (11) fixed on the connecting end thereof. The saw rope (22) is connected to the locking mechanism after passing through the connecting end of the drill tube (11). A limiting mechanism matching the saw rope (22) is provided in the annular groove (2). When the saw rope (22) is in the initial state, the limiting mechanism keeps the saw rope (22) in the annular groove (2) and the locking mechanism does not work. When the saw rope (22) is in the working state, the limiting mechanism does not limit the movement of the saw rope (22), and the locking mechanism continuously contracts the saw rope (22), so that the saw rope (22) in the annular groove (2) forms a ring and is tightened to abut against the outer wall of the concrete column in the drill tube (11).

2. The road construction drilling equipment according to claim 1, Features: The locking mechanism comprises a support frame (3), a winding wheel (31), a rotating shaft (32) and a pulling mechanism. The support frame (3) is mounted on the connecting end of the drill tube (11) and is arranged below the through hole (21). The support frame (3) is rotatably mounted with the winding wheel (31) via a bearing. The central axis of the winding wheel (31) is arranged radially along the drill tube (11). The saw rope (22) passes through the through hole (21) from the connecting end of the drill tube (11) and is fixed on the winding wheel (31). An axial hole is arranged at the central axis of the winding wheel (31). A rotating shaft (32) is mounted in the axial hole of the winding wheel (31) via a bearing. The rotating shaft (32) is arranged coaxially with the winding wheel (31). The winding wheel (31) is provided with a shaft arranged coaxially with the winding wheel (31) on one end facing the output shaft of the machine body (1). A circular groove (321) is formed on the winding wheel (31) and on the inner side wall of the groove (321); a rotating block (33) having a thickness matching the depth of the groove (321) is coaxially arranged in the groove (321); the outer diameter of the rotating block (33) is smaller than the inner diameter of the groove (321); at least one first step hole (34) arranged radially along the rotating block (33) is provided on the side wall of the rotating block (33) facing the arc-shaped locking groove (38); an elastic locking tongue mechanism is provided in the first step hole (34); the elastic locking tongue mechanism comprises an arc-shaped locking piece (37) matching the size of the arc-shaped locking groove (38); in an initial state, the arc-shaped locking piece (37) presses against the arc-shaped locking groove (38), so that the winding wheel (31) and the rotating block (33) are linked;One end of the rotating shaft (32) is fixed to the rotating block (33), and the other end extends out of the winding wheel (31) on which a handle (8) is fixed. A mounting block (4) is coaxially fixed on the side of the rotating block (33) facing the output shaft of the machine body (1). A rectangular cavity (41) arranged along its central axis is provided in the mounting block (4). The rectangular cavity (41) is provided with an opening at the end of the mounting block (4). A rectangular block (42) matching the size of the rectangular cavity (41) is slidably mounted inside the rectangular cavity (41). A step is provided on the open end of the rectangular cavity (41) to limit the rectangular block (42). A connecting shaft (43) arranged along the central axis of the rotating shaft (32) is fixed on the rectangular block (42). The end of the connecting shaft (43) extends out of the mounting block (4). A bevel gear (45) is coaxially mounted on the upper surface, a second spring (44) is sleeved inside the rectangular cavity (41) and outside the connecting shaft (43), one end of the second spring (44) is fixed on the rectangular block (42), and the other end is fixed on the step at the open end of the rectangular cavity (41), a gear ring (46) matching the bevel gear (45) is fixed on the body (1) on the side facing the bottom of the drill tube (11), and a pulling mechanism for controlling the meshing of the bevel gear (45) and the gear ring (46) is fixed on the drill tube (11), when the saw rope (22) is in the initial state, the pulling mechanism controls the bevel gear (45) to be disengaged from the gear ring (46), and when the saw rope (22) is in the working state, the pulling mechanism controls the bevel gear (45) to be meshed with the gear ring (46). ; 3. The road construction drilling equipment according to claim 2, Features: The elastic locking tongue mechanism comprises a first spring (35) and a T-shaped piece (36) arranged in the first step hole (34); one end of the first spring (35) is fixed to the bottom of the first step hole (34); the other end is fixed with the T-shaped piece (36); the T-shaped end of the T-shaped piece (36) is slidably connected in the first step hole (34) and is limited by the step on the opening end of the first step hole (34); the other end of the T-shaped piece (36) extends out of the first step hole (34) and is fixed with an arc-shaped locking piece (37) whose size matches the arc-shaped locking groove (38); in an initial state, under the action of the first spring (35), the arc-shaped locking piece (37) is pressed into the arc-shaped locking groove (38), so that the winding wheel (31) and the rotating block (33) are linked.

4. The road construction drilling equipment according to claim 2, Features: The pulling mechanism comprises a fixing block (6) and a mounting plate (62), wherein the fixing block (6) is fixed on the connecting end of the drill tube (11), and the fixing block (6) is arranged on the axial extension line of the bevel gear (45), and the distance between the fixing block (6) and the bevel gear (45) matches the working stroke of the second spring (44), and a receiving groove (61) is arranged in the fixing block (6), and a window (64) is arranged on the side of the fixing block (6) facing the bevel gear (45) for connecting the outside with the receiving groove (61). ), an inlet communicating with the receiving groove (61) is provided on the other side of the fixed block (6), a mounting plate (62) is inserted into the receiving groove (61) of the fixed block (6), the mounting plate (62) matches the receiving groove (61) in size, a magnet (63) matching the position and size of the window (64) is fixed on the mounting plate (62) on the side facing the bevel gear (45), and an iron block (65) matching the magnet (63) is provided on the side of the bevel gear (45) facing the fixed block (6).

5. The road construction drilling equipment according to claim 4, Features: The mounting plate (62) is positioned in the fixing block (6) by a positioning assembly, the positioning assembly comprising a second step hole (7) arranged on the mounting plate (62), a T-shaped locking piece (72) arranged in the second step hole (7) and a fourth spring (71), a locking hole (721) corresponding to the second step hole (7) is arranged in the receiving groove (61) of the fixing block (6), the T-shaped end of the T-shaped locking piece (72) is arranged in the second step hole (7) and is slidably connected to the inner wall of the second step hole (7), the other end of the T-shaped locking piece (72) can extend out of the second step hole (7) to form a locking tongue corresponding to the locking hole (721), the opening end of the second step hole (7) is provided with a limiting step to prevent the T-shaped locking piece (72) from sliding out of the second step hole (7), the One end of the fourth spring (71) is fixed to the bottom of the second step hole (7), and the other end is fixed to the T-shaped end of the T-shaped locking piece (72). An inner cavity (73) arranged perpendicular to the second step hole (7) is further provided on the mounting plate (62) below the second step hole (7). A winding shaft (74) is rotatably mounted inside the inner cavity (73). One end of the winding shaft (74) extends out of the mounting plate (62) and a rotating handle (77) is fixed thereon for facilitating the rotation of the winding shaft (74). The inner cavity (73) is communicated with the bottom of the second step hole (7) through a wire hole (75). The lower side of the T-shaped end of the T-shaped locking piece (72) is fixedly connected to one end of a winding wire (76), and the other end of the winding wire (76) passes through the wire hole (75) and is fixed to the winding shaft (74).

6. The road construction drilling equipment according to claim 2, Features: The outer side of the winding wheel (31) is equipped with a detachable cover shell (81) for covering the groove (321).

7. The road construction drilling equipment according to claim 1, Features: The bottom of the machine body (1) is equipped with a handle (82), and the side is equipped with an armrest (83).

8. The road construction drilling equipment according to any one of claims 1 to 7, Features: The limiting mechanism comprises a plurality of limiting components, which are symmetrically arranged in the inner wall of the drill tube (11) with the central axis of the drill tube (11) as the center. The limiting components comprise a connecting hole (53) arranged in the inner wall of the drill tube (11) and arranged along the axial direction, and a cavity (5) connected to the connecting hole (53). The inner diameter of the cavity (5) is greater than the inner diameter of the connecting hole (53). The height of the cavity (5) is greater than the diameter of the drill tube (11). The cavity (5) is close to the connecting end of the drill tube (11). The connecting hole (53) is connected to the annular groove (2). A pull wire (54) is arranged in (53), and a slider (51) matching the size of the cavity (5) is installed in the cavity (5), and the slider (51) is slidably connected to the inner wall of the cavity (5), one end of the pull wire (54) is fixedly connected to the slider (51), and the other end is fixed to the saw rope (22), and a third spring (52) is also arranged in the cavity (5), and the third spring (52) is sleeved on the outside of the pull wire (54), one end of the third spring (52) is fixed to the slider (51), and the other end is fixed to the connection between the cavity (5) and the connecting hole (53).

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