Drilling device of road drilling vehicle

Abstract

A drilling device of a road drilling vehicle is arranged on a drilling vehicle body, the drilling vehicle body is provided with a top plate and comprises a rotating assembly arranged on the top plate, the rotating assembly can vertically move up and down, the output end of the rotating assembly is connected with a drill rod vertically extending downwards, and the lower end of the drill rod is connected with a drill bit; the drill rod is sleeved with a pile casing, the lower end face of the pile casing abuts against the ground, the pile casing is connected with the top plate through an adjusting unit, the adjusting unit comprises an adjusting bolt and a vertically-arranged connecting rod, the upper end of the connecting rod is obliquely arranged in the direction away from the drill rod and is in sliding connection with the lower portion of the top plate, and the lower end of the connecting rod is hinged to the upper portion of the pile casing. One end of the adjusting bolt penetrates through the top plate in the transverse direction and abuts against the upper end of the connecting rod. The contact area between the drilling position and the ground can be increased through the lower surface of the pile casing, the overall stability of the drilling vehicle body during drilling is improved, the drill rod is arranged in the pile casing in a penetrating mode, the pile casing can play a role in guiding the drill rod and the drill bit, and the phenomenon that the drill rod shakes during rotation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of road drilling vehicles, in particular to a drilling device of a road drilling vehicle. Background Art

[0002] At present, pile foundation or other foundation engineering may be required in road construction. During the construction process, appropriate foundation structure is formed underground by drilling. The drilling operation is generally performed by a drilling vehicle. The existing drilling vehicles are prone to shaking of the drilling equipment during drilling, which affects the accuracy of the drilling position.

[0003] For example, the existing patent number CN213391982U discloses a high-efficiency road drilling vehicle, which includes a drilling mechanism and a driving mechanism arranged on the vehicle bottom plate, and the drill bit of the drilling mechanism and the motor of the driving mechanism can move up and down for drilling. However, the drilling vehicle only has the moving wheels in direct contact with the ground, and the contact area is small and the contact surface is relatively dispersed. The drill rod is long, which makes the drill bit easy to shake, resulting in deviation in the drilling position, thereby affecting the accuracy of the drilling hole position. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides a drilling device for a road drilling vehicle.

[0005] The technical solution of this utility model is as follows:

[0006] A drilling device for a road drilling vehicle is arranged on a drilling vehicle body with a top plate, and comprises a rotating assembly arranged on the top plate, the rotating assembly can move vertically up and down, the output end of the rotating assembly is arranged vertically downward and is connected to a drill rod, and the lower end of the drill rod is connected to a drill bit;

[0007] A casing is sleeved on the outside of the drill pipe, the lower end surface of the casing contacts the ground, and the casing is connected to the top plate through an adjustment unit. The adjustment unit includes an adjustment bolt and a vertically arranged connecting rod. The lower end of the connecting rod is hinged to the upper part of the casing (11), the upper end is inclined in a direction away from the drill pipe and is slidably connected to the lower part of the top plate, and the lower end is hinged to the upper part of the casing. One end of the adjustment bolt passes through the top plate in a transverse direction and contacts the upper end of the connecting rod.

[0008] The rotating assembly is installed on the top plate, and the output end of the rotating assembly is passed through the bottom of the top plate for installing the drill rod, which can drive the drill rod and the drill bit to rotate. The rotating assembly can move vertically up and down on the top plate through the lifting mechanism, thereby driving the drill rod and the drill bit below to move up and down in the vertical direction, so as to achieve the effect of the drill bit quickly drilling a hole at a designated position. In order to improve the stability of the drill bit and the drill rod during drilling, a casing that can be pressed tightly against the ground is arranged on the outside of the drill rod. The casing plays a guiding role for the drill rod, thereby reducing the shaking of the drill rod and the drill bit caused by the long drill rod and the small contact area between the borehole body and the bottom surface.

[0009] If the above-mentioned adjusting unit is arranged on one side of the casing, so that the connecting rod only presses the upper side of the casing to the ground, the pressing force on the casing will be uneven. In order to be able to evenly press the casing to the ground and contact with the bottom surface, at least two groups of adjusting units are arranged, and are circumferentially arranged on the outside of the casing.

[0010] When the adjusting bolt is tightened against the upper end of the connecting rod, in order to prevent the connecting rod from failing to press the casing, the vertical spacing between the upper end of the connecting rod and the drill rod is set to be larger than the vertical spacing between the lower end of the connecting rod and the drill rod. The specific structure is that the length of the connecting rod is larger than the maximum spacing that can be reached from the upper end surface of the casing to the lower surface of the top plate.

[0011] In order to facilitate the upper end of the connecting rod to slide on the top plate without separating from the top plate, the top plate includes a plate body and a slide rail. The slide rail is arranged perpendicular to the axis of the casing, and the slide rail is arranged on the lower surface of the plate body in the horizontal direction. The upper end of the connecting rod is slidably connected to the slide rail, and the upper end of the connecting rod is adapted to the slide rail.

[0012] The structure of the above-mentioned slide rail also includes that a baffle is provided at one end of the slide rail away from the drill rod, the baffle is a blocking end of the end of the slide rail, and a threaded hole is opened on the baffle, the adjusting bolt is threadedly connected to the baffle, and the length direction is consistent with the length direction of the slide rail, and the adjusting bolt is tightened, and the adjusting bolt moves toward the inside of the top plate, and the end of the adjusting bolt close to the connecting rod can push the upper end of the connecting rod to move inward. Because the length of the connecting rod is relatively long, the upper end of the casing will be pressed downward, and the casing will be pressed against the outside of the drill bit and part of the drill rod, which can increase the contact area between the drilling vehicle body and the bottom surface and improve the stability during drilling. The casing can also block most of the dust generated during drilling, reduce the harm of dust to workers, and at the same time facilitate the cleaning of drilled concrete or soil and reduce splashing.

[0013] The specific structure of the casing is that the inner diameter of the casing increases from top to bottom, a guide ring is provided at the upper end of the casing, the drill rod is inserted in the guide ring, the cross-section of the casing is a truncated cone structure, the guide ring provided at the upper end of the casing is adapted to the outer diameter of the drill rod, and the guide ring is slidingly connected with the drill rod, the lower end of the casing has a larger diameter, which can increase the contact area with the top surface, and the casing can also easily block most of the dust from flying.

[0014] The casing of the above structure can be fixed in the upper and lower positions. In order to reduce the phenomenon of lateral movement of the casing due to the vibration of the drill rod and reduce the shaking of the drill rod and the drill bit, the drilling vehicle body has support legs, and a guide rod is provided to connect the support legs and the outer surface of the casing. One end of the guide rod is connected to the casing, and the other end is slidably connected to the support leg, so that the casing can move vertically up and down under the drive of the guide rod when no hole is drilled, and its lateral movement can be limited by the action of the guide rod when drilling.

[0015] The sliding connection structure between the guide rod and the support leg is specifically that the support leg is provided with a sliding groove in the vertical direction, the end of the guide rod away from the casing is slidably connected in the sliding groove, the width of the sliding groove is adapted to the width of the guide rod, and the guide rod will not leave the sliding groove.

[0016] The above-mentioned rotating component is a driving motor, and the output shaft of the driving motor is arranged at a position where a through hole is opened in the middle of the top plate, and the output end of the driving motor passes through the through hole and is connected to the drill rod.

[0017] The specific structure for realizing the vertical movement of the rotating assembly up and down is that a lifting mechanism is arranged on the upper end surface of the drilling vehicle body, and the output end of the lifting mechanism is connected to the rotating assembly. The lifting mechanism can be two symmetrically arranged electric push rods or electric hydraulic cylinders, which can move up and down synchronously, thereby driving the rotating assembly to move up and down.

[0018] The beneficial effect of the utility model is that the drilling vehicle body includes a top plate, which is arranged at the upper end of the drilling vehicle body and is used to install a rotating assembly, and the rotating assembly can be a driving motor for driving the drill rod to rotate, and the driving motor can move vertically up and down above the top plate, and is used to drive the drill head at the lower end of the drill rod to move up and down, so as to play the role of drilling a hole at a designated position;

[0019] The lower end of the casing is in contact with the ground, and the upper end is movably connected to the lower surface of the top plate through a connecting rod. The casing is pressed against the outer side of the drill rod by adjusting the bolt to tighten the connecting rod. The lower surface of the casing can greatly increase the contact area between the drilling position and the ground, and improve the overall stability of the drilling vehicle during drilling. The drill rod is inserted into the casing, and the casing can guide the drill rod and the drill bit, reduce the shaking of the drill rod during rotation, reduce the breakage of the drill rod or the drill bit due to severe shaking, and improve the accuracy of the drilling position;

[0020] The inner diameter of the casing increases from top to bottom. A guide ring is provided at the upper end of the casing, and the drill rod is inserted in the guide ring. The cross-section of the casing is a truncated cone structure. The guide ring provided at the upper end of the casing is adapted to the outer diameter of the drill rod, and the guide ring is slidingly connected with the drill rod. The lower end of the casing has a larger diameter, which can increase the contact area with the top surface, and can also block most of the flying dust, reducing the harm of dust to the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached picture:

[0022] Figure 1 It is a front view;

[0023] Figure 2 is a cross-sectional view;

[0024] Figure 3 This is a bottom view;

[0025] Figure 4 It is a structural schematic diagram of the regulating unit and the casing;

[0026] The components represented by the reference numerals in the figure are:

[0027] 1. Drilling body; 2. Plate body; 21. Through hole; 3. Rotating assembly; 4. Lifting mechanism; 5. Drill rod; 6. Drill bit; 7. Adjusting bolt; 8. Connecting rod; 9. Slide rail; 10. Baffle; 11. Casing; 12. Support leg; 121. Slide groove; 13. Guide rod; 14. Guide ring. DETAILED DESCRIPTION

[0028] like Figure 1 and Figure 2 The drilling device of a road drilling vehicle shown is arranged on a drilling vehicle body 1 having a top plate, the top plate is arranged above the drilling vehicle body 1, the top plate includes a plate body 2 and a slide rail 9, and the slide rail 9 is arranged on the lower surface of the plate body 2. The top plate is arranged at the upper end of the drilling vehicle body 1, and is used to install a rotating assembly 3. The drilling device includes a rotating assembly 3 arranged on the plate body 2 of the top plate, and the rotating assembly 3 can move vertically up and down. The output end of the rotating assembly 3 is connected to a drill rod 5 extending vertically downward, and the lower end of the drill rod 5 is connected to a drill bit 6. The rotating assembly 3 can be a driving motor, which is used to drive the drill rod 5 and the drill bit 6 to rotate. The output shaft of the driving motor is arranged at a position where a through hole 21 is opened in the middle of the plate body 2, and the output end of the driving motor passes through the through hole 21 and is connected to the drill rod 5. The driving motor can move vertically up and down above the plate body 2, and is used to drive the drill bit 6 at the lower end of the drill rod 5 to move up and down, so as to drill a hole at a designated position. The specific structure for realizing the vertical movement of the rotating component 3 is that a lifting mechanism 4 is provided on the upper end surface of the drilling vehicle body 1, and the output end of the lifting mechanism 4 is connected to the rotating component 3. The lifting mechanism 4 can be two symmetrically arranged electric push rods or electric hydraulic cylinders, which can move up and down synchronously, thereby driving the rotating component 3 to move up and down.

[0029] like Figure 3As shown, the drill rod 5 is vertically arranged below the middle of the top plate, and a casing 11 is sleeved on the outside of the drill rod 5. The lower end surface of the casing 11 contacts the ground, and the casing 11 is connected to the top plate through an adjustment unit. The specific structure of the casing 11 is that the inner diameter of the casing 11 increases from top to bottom, and a guide ring 14 is arranged at the upper end of the casing 11. A through hole is arranged in the middle of the guide ring 14. The guide ring 14 is an annular structure. The outer wall of the guide ring 14 is fixedly connected to the inner side surface of the upper end of the casing 11. The drill rod 5 is inserted in the guide ring 14. The cross section of the casing 11 is a truncated cone structure. The guide ring 14 arranged at the upper end of the casing 11 is adapted to the outer diameter of the drill rod 5, and the guide ring 14 is in sliding connection with the drill rod 5. The guide ring 14 can guide the middle or lower part of the drill rod 5, thereby reducing the shaking of the drill rod 5 and improving the stability and accuracy of the drill bit 6 in drilling. The lower end of the protective tube 11 has a larger diameter, which can increase the contact area with the top surface and can also block most of the flying dust.

[0030] Among them, Figure 4 As shown, the adjustment unit includes an adjusting bolt 7 and a vertically arranged connecting rod 8, the upper end of the connecting rod 8 is inclined in the direction away from the drill pipe 5, the slide rail 9 is horizontally arranged on the lower surface of the plate body 2, the upper end of the connecting rod 8 is slidably connected in the slide rail 9, the upper end of the connecting rod 8 is adapted to the slide rail 9, the lower end of the connecting rod 8 is hinged to the upper part of the casing 11, and one end of the adjusting bolt 7 passes through the slide rail 9 in the transverse direction and contacts the upper end of the connecting rod 8. The end of the above-mentioned slide rail 9 away from the drill rod 5 is provided with a baffle 10, which is the blocking end of the end of the slide rail 9. The baffle 10 is provided with a threaded hole, and the adjusting bolt 7 is threadedly connected to the baffle 10, and the length direction is consistent with the length direction of the slide rail 9. Tighten the adjusting bolt 7, the adjusting bolt 7 moves toward the inside of the top plate, and the end of the adjusting bolt 7 close to the connecting rod 8 can push the upper end of the connecting rod 8 to move inward. Because the length of the connecting rod 8 is relatively long, the upper end of the casing 11 will be pressed downward, and the casing 11 will be pressed against the outside of the drill bit 6 and part of the drill rod 5, which can increase the contact area between the drilling vehicle 1 and the bottom surface and improve the stability during drilling. The casing 11 can also block most of the dust during drilling, reduce the harm of dust to the staff, and at the same time facilitate the cleaning of the drilled concrete or soil to reduce the splashing phenomenon. If the above-mentioned adjustment unit is arranged on one side of the casing 11, so that the connecting rod 8 only presses the upper side of the casing 11 to the ground, the pressing force on the casing 11 will be uneven. In order to be able to evenly press the casing 11 to the ground and contact with the bottom surface, at least two groups of adjustment units are provided, and are symmetrically arranged on both sides of the casing 11.

[0031] The lower end of the casing 11 is in contact with the ground and is located outside the position to be drilled. The upper end of the casing 11 is connected to the slide rail 9 through the connecting rod 8. The connecting rod 8 is tightened by the adjusting bolt 7, and then the casing 11 is pressed against the outside of the drill rod 5. The lower surface of the casing 11 can greatly increase the contact area between the drilling position and the ground, and improve the overall stability of the drilling vehicle 1 during drilling. The drill rod 5 is inserted into the casing 11, and the casing 11 can guide the drill rod 5 and the drill bit 6, reduce the shaking of the drill rod 5 during rotation, reduce the breakage of the drill rod 5 or the drill bit 6 due to severe shaking, and improve the accuracy of the drilling position. When the adjusting bolt 7 is tightened against the upper end of the connecting rod 8, in order to prevent the connecting rod 8 from failing to press the casing 11, the vertical spacing between the upper end of the connecting rod 8 and the drill rod 5 is set to be larger than the vertical spacing between the lower end of the connecting rod 8 and the drill rod 5. The specific structure is that the length of the connecting rod 8 is larger than the maximum spacing that can be reached from the upper end surface of the casing 11 to the lower surface of the top plate.

[0032] Finally, the casing 11 of the above structure can be fixed in the upper and lower positions. In order to reduce the phenomenon of the casing 11 being vibrated by the drill rod 5 and moving laterally, and to reduce the phenomenon of the drill rod 5 and the drill bit 6 shaking, the drilling vehicle body 1 has a support leg 12, and a guide rod 13 is connected to the outer surface of the support leg 12 and the casing 11. The support leg 12 is provided with a slide groove 121 in the vertical direction, one end of the guide rod 13 is connected to the casing 11, and the end of the guide rod 13 away from the casing 11 is slidably connected in the slide groove 121, the width of the slide groove 121 is adapted to the width of the guide rod 13, and the guide rod 13 will not be separated from the slide groove 121, so that the casing 11 can move vertically up and down under the drive of the guide rod 13 when not drilling a hole, and can limit its lateral movement under the action of the guide rod 13 when drilling a hole.

Claims

1. A drilling device for a road drilling vehicle, arranged on a drilling vehicle body (1) having a top plate, characterized in that: It comprises a rotating assembly (3) arranged on a top plate, the rotating assembly (3) being able to move vertically up and down, the output end of the rotating assembly (3) being arranged vertically downward and being connected to a drill rod (5), the lower end of the drill rod (5) being connected to a drill bit (6); The outer side of the drill rod (5) is provided with a casing (11), the lower end surface of the casing (11) contacts the ground, the casing (11) is connected to the top plate through an adjustment unit, the adjustment unit comprises an adjustment bolt (7) and a connecting rod (8), the lower end of the connecting rod (8) is hinged to the upper part of the casing (11), and the upper end is inclined in a direction away from the drill rod (5) and is slidably connected to the lower part of the top plate, one end of the adjustment bolt (7) passes through the top plate in a transverse direction and contacts the upper end of the connecting rod (8).

2. A road drilling device according to claim 1, characterized in that: At least two groups of the adjustment units are provided and are circumferentially arranged outside the casing (11).

3. The drilling device of a road drilling vehicle according to claim 1, characterized in that: The length of the connecting rod (8) is greater than the maximum distance that can be achieved from the upper end surface of the casing (11) to the lower surface of the top plate.

4. The drilling device of a road drilling vehicle according to claim 2, characterized in that: The top plate comprises a plate body (2) and a slide rail (9), wherein the slide rail (9) is arranged perpendicularly to the axis of the casing (11), and the slide rail (9) is arranged on the lower surface of the plate body (2) in the horizontal direction, and the upper end of the connecting rod (8) is slidably connected in the slide rail (9).

5. The drilling device of a road drilling vehicle according to claim 4, characterized in that: A baffle (10) is provided at one end of the slide rail (9) away from the drill rod (5); the adjusting bolt (7) is threadedly connected to the baffle (10), and the length direction thereof is consistent with the length direction of the slide rail (9).

6. The drilling device of a road drilling vehicle according to claim 1, characterized in that: The inner diameter of the casing (11) increases from top to bottom, a guide ring (14) is provided at the upper end of the casing (11), and the drill rod (5) is inserted into the guide ring (14).

7. The drilling device of a road drilling vehicle according to claim 1, characterized in that: The drilling vehicle body (1) has a support leg (12), and the support leg (12) and the outer surface of the casing (11) are connected to a guide rod (13), one end of the guide rod (13) is connected to the casing (11), and the other end is slidably connected to the support leg (12).

8. The drilling device of a road drilling vehicle according to claim 7, characterized in that: The support leg (12) is provided with a sliding groove (121) in the vertical direction, and one end of the guide rod (13) away from the casing (11) is slidably connected in the sliding groove (121).

9. The drilling device of a road boring vehicle according to claim 1, characterized in that: A through hole (21) is provided in the middle of the top plate, and the output end of the rotating assembly (3) passes through the through hole (21) and is connected to the drill rod (5).

10. The drilling device of a road drilling vehicle according to claim 1, characterized in that: The upper end surface of the drilling vehicle body (1) is provided with a lifting mechanism (4), and the output end of the lifting mechanism (4) is connected to the rotating assembly (3).

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