Pavement coring drill device for highway engineering supervision
By introducing a drive bar and surrounding roller structure into the road coring drill device, the problem of radial deviation of the drill bit is solved, stable drilling is achieved, construction efficiency is improved, and equipment life is extended.
Patent Information
- Application Number
- CN202510781106.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-12
- Publication Date
- 2025-09-09
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The drill bit of the existing road coring drill device is prone to radial deviation during drilling, resulting in irregular hole diameter, difficulty in controlling the depth, severe equipment wear and low construction efficiency.
A drive bar and surrounding roller structure is adopted. When the drill bit descends to a preset height through a linkage drive mechanism, the drive bar pushes the surrounding roller to abut the outer peripheral surface of the drill bit, limiting radial deviation and compensating for roller wear through an adjusting component.
It effectively prevents radial deviation of the drill bit, improves drilling efficiency, reduces equipment wear, extends service life, and reduces project costs.
Smart Images
Figure CN120608447A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of roadbed sampling equipment, in particular to a road surface coring drill device for highway engineering supervision. Background Art
[0002] In the field of highway engineering supervision, pavement core drilling is a core means of detecting key quality indicators such as roadbed compaction and strength, and is of great significance to ensuring project quality. Existing core drilling devices often face many technical difficulties during the initial drilling operation. Due to the long length of the drill bit, its own gravity and inertia are relatively large. When drilling into a roadbed with a higher hardness, once the force is uneven, it is very easy to cause radial deviation of the drill bit. When the drill bit deviates, it will not only cause the borehole diameter to be irregular and the depth to be difficult to accurately control, but also cause the drill rod to be subjected to abnormal torque, aggravating equipment wear and shortening its service life. In addition, the deviation problem will also prolong drilling time, increase engineering inspection costs, and reduce overall construction efficiency. Summary of the Invention
[0003] In order to make up for the deficiencies of the existing technical problems, the purpose of the present invention is to provide a road surface coring drill device for highway engineering supervision, which solves the problem that the drill bit of the existing roadbed sampling equipment is easily radially offset during coring.
[0004] In order to solve the problems of the prior art, the technical solutions of the present invention are as follows: A road coring drill device for highway engineering supervision comprises a mobile frame, a drill bit mounted on the mobile frame, and a power device for driving the drill bit to rotate. The drill bit is movably mounted on the mobile frame in a vertical direction via a lifting mechanism. The movable frame is symmetrically provided with two driving bars that slide relative to each other along the width direction of the movable frame, and each driving bar is provided with a pair of surrounding rollers at one end close to the drill bit; The device also includes a linkage drive mechanism, which connects the lifting movement of the drill bit with the sliding of the drive bar, so that when the drill bit descends to a preset height, the two drive bars approach each other under the action of the linkage drive mechanism, and the two pairs of surrounding rollers abut the outer peripheral surface of the drill bit on both sides to limit its radial deviation.
[0005] Preferably, the linkage drive mechanism includes a lifting member, a pushing bar and a translation member; The lifting member is slidably connected to the vertical direction of the movable frame and moves downward under the downward thrust of the drill bit. One end of the pushing bar is hinged to the lifting member and the other end is hinged to the translation member. The translation member slides along the length direction of the movable frame and cooperates with the driving groove of the driving bar. The driving groove is provided with an oblique section for converting the horizontal sliding of the translation member into the mutual approach or distance of the driving bars.
[0006] Preferably, a spring is provided on the movable frame, one end of the spring abuts against the movable frame, and the other end abuts against the lifting member, so as to drive the lifting member to reset when the drill bit rises.
[0007] Preferably, the driving groove is composed of horizontal groove sections at both ends and an inclined groove section connecting the two, and the upper end of the translation member is slidably inserted into the driving groove.
[0008] Preferably, the top surface of the driving bar is slidably connected to a connecting plate at one end close to the drill bit via a second linear slide rail, and a pair of surrounding rollers at the end of the driving bar are rotatably connected to the inner side of the open end of the connecting plate. The sliding direction of the second linear slide rail is perpendicular to the length direction of the driving bar, and an adjustment component is provided between the connecting plate and the driving bar, and the adjustment component is used to drive the surrounding rollers to move on the driving bar toward or away from the drill bit.
[0009] Preferably, the adjustment assembly includes a second screw rotatably mounted on the top of the drive bar, a threaded sleeve is fixed to the bottom of the connecting plate, the threaded sleeve is threadedly connected to the second screw, a knob is fixed to one end of the second screw, and the outer wall of the knob is provided with anti-slip grooves.
[0010] Compared with the prior art, the advantages of the present invention are as follows: 1. The present invention provides structures such as drive bars and surrounding rollers. After the drill bit descends to a preset height, the surrounding rollers can be pushed to contact the drill bit from the outside, limiting the radial deviation of the drill bit and ensuring the stable descent of the drill bit. This concentrates the drilling force, significantly improves the initial drilling efficiency, reduces equipment wear, and increases its service life.
[0011] 2. The present invention provides a second screw and a connecting plate and other structures so that the position of the surrounding roller on the driving bar can be adjusted, thereby compensating for the wear of the surrounding roller without replacing the surrounding roller. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the sliding rod structure of the present invention; Figure 3 Schematic diagram of the drill bit structure of the present invention; Figure 4 It is a schematic diagram of the position of the translation member of the present invention; Figure 5 Schematic diagram of the structure of the translation member of the present invention; Figure 6 This is a structural diagram of embodiment 2 of the present invention; Figure numerals: 1. movable frame; 2. gantry; 3. sliding sleeve; 4. vertical plate; 5. first screw; 6. drill bit; 7. power device; 8. hand wheel; 9. driving bar; 10. connecting plate; 11. surrounding roller; 12. sliding rod; 13. lifting member; 14. pushing bar; 15. translation member; 16. spring; 17. driving groove; 18. threaded sleeve; 19. second screw; 20. knob. DETAILED DESCRIPTION
[0013] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.
[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.
[0015] Specific embodiments of the present invention are described below with reference to the accompanying drawings.
[0016] Example 1 See also Figures 1 to 5 The present embodiment provides a road coring drill device for highway engineering supervision, including a mobile frame 1, a gantry 2 is fixed on the top of the mobile frame 1, two vertical rods of the gantry 2 are slidably connected with a sliding sleeve 3, a vertical plate 4 is fixed between the two sliding sleeves 3, the middle part of the crossbeam of the gantry 2 is rotatably connected with a first screw rod 5 through a bearing, the bottom of the first screw rod 5 is rotatably connected to the top surface of the mobile frame 1 through a bearing, the vertical plate 4 is threadedly connected to the first screw rod 5 through a first threaded hole, a drill bit 6 is rotatably installed on one side of the vertical plate 4, and a power device 7 is fixed on the side of the vertical plate 4 away from the drill bit 6, and the power device 7 is usually a single-cylinder diesel engine, or a single The power end of the power unit 7 is connected to the upper end of the drill bit 6 through a synchronous pulley and a synchronous belt transmission. The synchronous belt passes over both sides of the first screw 5. The bottom height of the sliding sleeve 3 is lower than the bottom height of the synchronous belt. A handwheel 8 is fixed to the top of the first screw 5. After the mobile frame 1 is placed on the road surface, multiple people can stand on the top surface of the mobile frame 1 to stabilize it against the road surface. Then, the power unit 7 is turned on to drive the drill bit 6 to rotate. At the same time, the handwheel 8 is manually turned, so that the vertical plate 4 is driven by the first screw 5 to move downward, causing the drill bit 6 to move down until it contacts the roadbed, and then drill through the road surface to drill a roadbed sample. At the beginning of the drilling work, the drill bit 6 contacts the bottom surface in the early stage.
[0017] Since the drill bit 6 is long and the roadbed is hard, the drill bit 6 is prone to deflection in the circumferential direction at the beginning, which reduces the initial drilling force, reduces the drilling efficiency, and aggravates the wear of the drill bit 6. Therefore, two driving bars 9 are symmetrically arranged on the top surface of the mobile frame 1. The length direction of the driving bar 9 coincides with the length direction of the mobile frame 1. The drill bit 6 is between the two driving bars 9, and a connecting plate 10 is installed on the side of the driving bar 9 close to the drill bit 6. The opposite sides of the two connecting plates 10 on both sides are open. Two surrounding rollers 11 are symmetrically connected to the opening of the connecting plate 10. After the two driving bars 9 on both sides are close to each other, the four surrounding rollers 11 can The drill bit 6 is surrounded on both sides and abuts against the outside of the drill bit 6. Two sliding bars 12 are symmetrically fixed on the top surface of the mobile frame 1. The length direction of the sliding bar 12 coincides with the width direction of the mobile frame 1, and the driving bar 9 is slidably connected to the two sliding bars 12 through sliding holes opened at both ends, so that the two driving bars 9 can slide close to or away from each other, so that the four surrounding rollers 11 are away from the drill bit 6 or close to and abut against the outer wall of the drill bit 6. When the drill bit 6 descends to between the four surrounding rollers 11 and contacts the roadbed, the surrounding rollers 11 can be driven close to the drill bit 6 to abut against the drill bit 6, thereby ensuring that the drill bit 6 will not deviate in the circumferential direction and can perform drilling work stably.
[0018] For the driving work of the driving bar 9, the lifting member 13 is connected by sliding on the two vertical rods of the gantry 2, and two pushing bars 14 are symmetrically hinged at the bottom of the lifting member 13. The first screw 5 passes through the lifting member 13 through the through hole in the middle of the lifting member 13, and the lower end of the pushing bar 14 is hinged to the translation member 15. The upper section of the translation member 15 is cylindrical and the lower section is flat. The flat part of the lower section of the translation member 15 is slidably connected to the top surface of the mobile frame 1 through the first linear slide rail. The sliding direction of the translation member 15 is consistent with the length direction of the mobile frame 1. To coincide with each other, a spring 16 is sleeved at the lower end of the vertical rod of the gantry 2, one end of the spring 16 abuts against the top surface of the moving frame 1, and the other end abuts against the bottom surface of the lifting member 13, and a driving groove 17 is opened in the middle of the driving bar 9. The driving groove 17 includes a horizontal groove with two parallel ends and an inclined groove connecting the two horizontal grooves. The cylindrical part of the upper section of the translation member 15 is inserted into the driving groove 17, so that when the drill bit 6 descends and the lower end of the sliding sleeve 3 abuts against the top surface of the lifting member 13, the drill bit 6 continues to descend, which can push the lifting member 1 3 descends, and at this time the drill bit 6 is located between the surrounding rollers 11, and the lifting member 13 descends, pushing the pushing bar 14, so that the translation member 15 slides to the side away from the drill bit 6 in the length direction of the moving frame 1, pushing the inclined groove part of the driving groove 17, so that the two driving bars 9 approach each other, and the four surrounding rollers 11 approach the outer wall of the drill bit 6, until the translation member 15 moves to the horizontal groove at the other end of the driving groove 17, and the surrounding rollers 11 abut against the outer wall of the drill bit 6, then the drill bit 6 continues to descend, and the two driving bars 9 are brought together to complete the unloading. When it moves again, the surrounding roller 11 keeps in contact with the outer wall of the drill bit 6 to provide circumferential protection, preventing the drill bit 6 from deviating, so that the force of the drill bit 6 can be concentrated, accelerating the drilling of the roadbed and improving the drilling efficiency. When the drill bit 6 rises, the spring 16 is used to push the lifting member 13 to rise and reset, and finally the two drive bars 9 are separated and reset. The drive of the entire surrounding roller 11 does not require additional power equipment, and the power of the drill bit 6 descending is used to reduce the investment in power equipment, and the mechanical linkage ensures the timeliness of the contact of the surrounding roller 11.
[0019] Example 2 See also Figure 6The present embodiment provides a further technical solution based on the first embodiment. In order to make up for the wear of the outer wall of the surrounding roller 11 and ensure that the surrounding roller 11 can accurately contact the outer wall of the drill bit 6 every time, the connecting plate 10 is slidably connected to the driving bar 9 through the second linear slide rail, so that the connecting plate 10 can slide in the width direction of the movable frame 1, and a threaded sleeve 18 is fixed at the bottom of the connecting plate 10, and a second screw 19 is rotatably installed at the end of the driving bar 9. The threaded sleeve 18 is sleeved on the outside of the second screw 19 and is threadedly connected to the second screw 19. A knob 20 is fixed at the end of the second screw 19, and an anti-slip groove is provided on the outer wall of the knob 20. In this way, when the surrounding roller 11 is worn and the two driving bars 9 are in the closest position, there is a gap between the surrounding roller 11 and the drill bit 6. By rotating the knob 20, the second screw 19 is driven to rotate, so that the connecting plate 10 drives the surrounding roller 11 to approach the drill bit 6 until it is attached to the outer wall of the drill bit 6, thereby making up for the wear and tear, and there is no need to frequently replace the surrounding roller 11.
[0020] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0021] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.
Claims
1. A road coring drill device for highway engineering supervision, comprising a mobile frame (1), a drill bit (6) mounted on the mobile frame (1), and a power device (7) for driving the drill bit (6) to rotate, wherein the drill bit (6) is movably mounted on the mobile frame (1) in a vertical direction via a lifting mechanism, and is characterized in that: Two driving bars (9) are symmetrically arranged on the movable frame (1) and slide relative to each other along the width direction of the movable frame (1). A pair of surrounding rollers (11) is provided at one end of each driving bar (9) close to the drill bit (6); The device further comprises a linkage drive mechanism, which connects the lifting movement of the drill bit (6) and the sliding movement of the drive bar (9), so that when the drill bit (6) descends to a preset height, the two drive bars (9) are moved closer to each other by the linkage drive mechanism, and the two pairs of surrounding rollers (11) abut against the outer peripheral surface of the drill bit (6) on both sides to limit its radial deviation.
2. The device according to claim 1, characterized in that: The linkage drive mechanism comprises a lifting member (13), a pushing bar (14) and a translation member (15); The lifting member (13) is slidably connected to the vertical direction of the movable frame (1) and moves downward under the downward thrust of the drill bit (6). One end of the push bar (14) is hinged to the lifting member (13) and the other end is hinged to the translation member (15). The translation member (15) slides along the length direction of the movable frame (1) and cooperates with the driving groove (17) of the driving bar (9). The driving groove (17) is provided with an oblique section for converting the horizontal sliding of the translation member (15) into the mutual approach or separation of the driving bars (9).
3. The device according to claim 2, characterized in that: The movable frame (1) is provided with a spring (16), one end of the spring (16) abuts against the movable frame (1), and the other end abuts against the lifting member (13), and is used for driving the lifting member (13) to reset when the drill bit (6) rises.
4. The device according to claim 2, characterized in that: The driving groove (17) is composed of horizontal groove sections at both ends and an inclined groove section connecting the two, and the upper end of the translation member (15) is slidably inserted into the driving groove (17).
5. The device according to claim 1, characterized in that: The top surface of the driving bar (9) is slidably connected to the connecting plate (10) at one end thereof near the drill bit (6) via a second linear slide rail. A pair of surrounding rollers (11) at the end of the driving bar (9) are both rotatably connected to the inner side of the open end of the connecting plate (10). The sliding direction of the second linear slide rail is perpendicular to the length direction of the driving bar (9). An adjusting component is provided between the connecting plate (10) and the driving bar (9). The adjusting component is used to drive the surrounding rollers (11) to move on the driving bar (9) toward or away from the drill bit (6).
6. The device according to claim 5, characterized in that: The adjustment assembly includes a second screw rod (19) rotatably mounted on the top of the driving bar (9), a threaded sleeve (18) is fixed to the bottom of the connecting plate (10), the threaded sleeve (18) is threadedly connected to the second screw rod (19), and a knob (20) is fixed at one end of the second screw rod (19).
7. The device according to claim 6, characterized in that: The outer wall of the knob (20) is provided with anti-slip grooves.