Drilling equipment for road construction

Abstract

The invention discloses drilling equipment for road construction, and relates to the technical field of road construction, the drilling equipment comprises a cart, a motor, a vertical rod and a handrail are fixedly connected to the cart, an output shaft of the motor is fixedly connected with a first threaded rod, and the first threaded rod is rotatably connected with the cart; compared with a manual alignment mode in the prior art, the centering effect of the drill rod is achieved through movement of the clamping jaws, the drill rod is clamped and centered through the two clamping jaws, the drill rod and an output shaft of the motor are located on the same axis before rotating installation, the trial-error and repeated adjustment processes in the follow-up drill rod installation process are reduced, and the installation efficiency is improved. According to the invention, the installation efficiency of the drill rod is improved, and meanwhile, the mechanical damage to the drill rod or the connecting seat caused by improper operation in the process of manually tightening the drill rod by a worker traditionally can be effectively reduced, for example, the problems of connecting thread damage and the like caused by forced insertion are avoided, so that the drill rod can be stably and accurately inserted into the connecting seat.

Description

Technical Field

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

[0002] Drilling equipment for road construction is mechanical equipment specially designed and manufactured for drilling operations during the construction of roads, bridges, tunnels and other projects.

[0003] In existing drilling equipment, manual alignment and tightening are typically used when installing drill rods. During installation, workers need to manually adjust the drill rod to align it with the center of the motor output shaft. This manual alignment process can lead to problems such as friction and scratching of threads or interfaces due to insertion angle deviation. This alignment operation also relies on the worker's experience and technical level, requiring multiple corrections, which delays subsequent drilling time. In addition, due to long-term use of the equipment, the threads of the drill pipe and the connector will wear out. This will cause the drill pipe to be installed eccentrically due to improper operation during the manual tightening process. The eccentric rotation of the drill pipe during the drilling process will cause the equipment to shake or even lose control when rotating at high speed, causing serious safety hazards such as personal injury or equipment damage. In order to solve the above problems, the present application proposes a drilling device for road construction. Summary of the Invention

[0004] In order to solve the above technical problems, a drilling device for road construction is provided. This technical solution solves the problems raised in the above background technology; To achieve the above objectives, the present invention can be implemented by adopting the following technical solutions: The present invention provides a drilling device for road construction, comprising a cart, to which a motor, a vertical rod and a handrail are fixedly connected, an output shaft of the motor is fixedly connected to a threaded rod 1, and the threaded rod 1 is rotatably connected to the cart; A centering assembly is provided under the motor, and the centering assembly includes a base threadedly connected to the threaded rod one, the upper surface of the base is fixedly connected to the motor, the bottom of the base is rotatably connected to a ring, the bottom of the ring is fixedly connected to a cavity column, two cavity columns are symmetrically provided, a limit rod is slidably connected in the cavity column, the two limit rods are jointly fixedly connected to a fixed block, the outer wall of the fixed block is fixedly connected to the bracket, the bracket is rotatably connected to the threaded rod two, the bracket is fixedly connected to the guide rod, the threaded rod two is threadedly connected to the moving block, the moving blocks are symmetrically provided with two, a clamping claw is fixedly connected to the moving block, and the fixed block is fixedly connected to a support plate on the side close to the bracket, and the support plate is rotatably connected to a worm and a worm gear.

[0005] Preferably, the centering assembly also includes a drill rod, which is fixed to the outside of the handrail by an elastic clip. The outer surface of the drill rod is provided with a threaded line, and the outer surface of the drill rod is provided with a slot, and four slots are equidistantly arranged in a ring, and a metal spring is fixedly connected in the slot.

[0006] Preferably, the base is slidably connected to the vertical rod, and the limiting rod is in a "T" shape.

[0007] Preferably, the outer surface of the second threaded rod is provided with two sections of thread lines in opposite directions, the movable blocks are slidingly connected to the guide rod, the worm is fixedly connected to the second threaded rod, the worm is meshingly connected to the worm wheel, and the bottom of the worm wheel is fixedly connected to a handle.

[0008] Preferably, a locking assembly is provided under the motor, and the locking assembly includes a rotating disk rotatably connected to the bottom of the base, and the bottom of the rotating disk is fixedly connected to a fixing plate, and two fixing plates are symmetrically provided, and the fixing plates are commonly fixedly connected to a connecting seat, one of the fixing plates is provided with a square hole 1, and the outer surface of the connecting seat is provided with a square hole 2, and one of the fixing plates is fixedly connected to a cavity block, and a pull rod is slidably connected to the cavity block, and a clamping block and a compression spring 1 are fixedly connected to the outer surface of the pull rod, and two clamping blocks are symmetrically provided, and one end of the pull rod close to the connecting seat is fixedly connected to a cavity tube, and a trigger rod is slidably connected to the cavity tube.

[0009] Preferably, the locking assembly also includes a compression spring 2 fixedly connected to the bottom of the rotating disk, the end of the compression spring 2 away from the rotating disk is fixedly connected to a cover plate, the cover plate is rotatably connected to a connecting rod, four connecting rods are equidistantly arranged in a ring, the end of the connecting rod away from the cover plate is rotatably connected to a movable plate, the bottom of the rotating disk is fixedly connected to a guide plate, four guide plates are equidistantly arranged in a ring, a check pin is slidably connected in the movable plate, and a spring is fixedly connected to the check pin.

[0010] Preferably, the rotating disk is fixedly connected to the output shaft of the motor, the inner wall of the connecting seat is provided with a thread line, and is adapted to the thread line on the outer surface of the drill rod, the connecting seat is threadedly connected to the drill rod, the compression spring 1 is fixedly connected to the cavity block, the trigger rod is in the shape of an "I", the upper and lower parts of the trigger rod are fixedly connected to a circular disc, and the radius of the circular disc is larger than the radius of the trigger rod, and the cavity tube and the trigger rod are adapted to the square hole 1 and the square hole 2.

[0011] Preferably, the cover plate is slidably connected to the fixed plate, the guide plate is slidably connected to the movable plate, the check pin is matched with the slot, and the spring is fixedly connected to the movable plate.

[0012] From the above, the characteristics and advantages of the present invention are: The drill rod is centered by moving the clamping jaws. Compared with the manual alignment method used in the prior art, this device uses two clamping jaws to clamp and center the drill rod, so that the drill rod is located on the same axis as the output shaft of the motor before rotation and installation, reducing the trial and error and repeated adjustment process in the subsequent drill rod installation, improving the efficiency of drill rod installation, and effectively reducing improper operations during the traditional manual tightening of the drill rod by workers, thereby causing mechanical damage to the drill rod or the connecting seat, such as avoiding problems such as damage to the connecting thread caused by forced insertion. In this way, the drill rod can be smoothly and accurately inserted into the connecting seat.

[0013] The cooperation between the cavity column and the limit rod ensures that the drill rod is coaxial with the motor output shaft after installation. Compared with the existing technology that uses manual tightening, this device uses the limit rod and the cavity column to drive the ring to rotate together during the rotation and installation of the drill rod, and when the worker rotates the drill rod, the fixed block rotates with the limit rod, thereby rigidly limiting the drill rod to effectively reduce the radial swing of the drill rod, and avoids the problem of the drill rod deviating from the axial position of the connecting seat due to operational errors during the traditional manual tightening of the drill rod. This increases the control of the drill rod installation process, ensures that the drill rod is connected in a stable posture, and improves the installation accuracy.

[0014] The drill rod can be locked by moving the movable plate and the check pin. Compared with the threaded fixing method in the existing technology, this device uses the movable plate to clamp the drill rod and the check pin to insert the slot to form a double locking mechanism for the drill rod, which significantly improves the stability of the drill rod during operation and avoids the traditional technology of relying solely on threads to fix the drill rod. After the equipment has been running for a long time, the threads will wear and the drill rod cannot be effectively fixed, which will cause the drill rod to loosen during operation. At the same time, the check pin hits the metal reed when entering the slot to make a "click" sound. This is an intuitive locking completion signal. The worker can confirm that the drill rod has been installed through the sound, thereby simplifying the operation process and reducing errors caused by human judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front perspective schematic diagram of the overall structure shown in the present invention; Figure 2 It is a three-dimensional schematic diagram of the base and the ring-related components shown in the present invention; Figure 3 It is a three-dimensional schematic diagram of the limiting rod and the fixing block related parts shown in the present invention; Figure 4 It is a three-dimensional schematic diagram of the drill rod and the related components of the clamping groove shown in the present invention; Figure 5 This is a schematic diagram of a top view of a cutaway plan of a drill rod according to the present invention; Figure 6It is a three-dimensional schematic diagram of the rotating disk and motor-related components shown in the present invention; Figure 7 It is a plan view of the fixing plate and the connecting seat related parts shown in the present invention; Figure 8 This is an exploded perspective diagram of the connecting seat and the cavity tube shown in the present invention; Figure 9 This is a schematic diagram of a cutaway perspective view of the interior of the connecting base shown in the present invention; Figure 10 It is a three-dimensional schematic diagram of the connecting rod and the movable plate related parts shown in the present invention; Figure 11 It is a three-dimensional schematic diagram of the cover plate and the connecting seat related components shown in the present invention.

[0016] Wherein, the accompanying drawings in the present invention are: 1. Cart; 21. Motor; 22. Vertical rod; 23. Threaded rod 1; 3. Handrail; Centering components: 41, base; 42, motor; 43, ring; 44, cavity column; 45, limit rod; 46, fixed block; 47, bracket; 48, threaded rod 2; 49, guide rod; 410, moving block; 411, clamping claw; 412, support plate; 413, worm; 414, worm gear; 415, drill rod; 416, slot; 417, metal spring; Locking assembly: 51, rotating disk; 52, fixed plate; 5201, square hole 1; 53, connecting seat; 5301, square hole 2; 54, cavity block; 55, pull rod; 56, clamping block; 57, compression spring 1; 58, cavity tube; 59, trigger rod; 510, compression spring 2; 511, cover plate; 512, connecting rod; 513, movable plate; 514, guide plate; 515, check pin; 516, spring. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] See Figures 1 to 11 As shown in the figure, an embodiment of the present invention is provided, and a drilling device for road construction is provided, which will be described in detail below: A drilling device for road construction, such as Figure 1As shown, the trolley 1 is fixedly connected to a motor 21, a vertical rod 22 and an armrest 3. The motor 21 and the vertical rod 22 are located on the same side, and the armrest 3 is located on the side away from the vertical rod 22. The output shaft of the motor 21 is fixedly connected to a threaded rod 1 23, and the threaded rod 1 23 is located directly below the motor 21. The end of the threaded rod 1 23 away from the motor 21 is rotatably connected to the trolley 1. like Figure 2 and Figure 3 As shown, a centering assembly is provided below the motor 21, and the centering assembly includes a base 41 threadedly connected to the threaded rod 23, the upper surface of the base 41 is fixedly connected to the motor 42, the bottom surface of the base 41 is rotatably connected to a ring 43, and the side of the ring 43 away from the base 41 is fixedly connected to a cavity column 44, and two cavity columns 44 are symmetrically provided, and a limiting rod 45 is slidably connected in the cavity column 44, and the limiting rod 45 is located at the bottom end of the inner cavity of the cavity column 44, and the two limiting rods 45 are fixedly connected to a fixed block 46 together, and the fixed block 46 is located at the limit rod 45 away from the cavity column 44. On one side, the outer wall of the fixed block 46 is fixedly connected to a bracket 47, and the bracket 47 is rotatably connected to a threaded rod 2 48. The side of the bracket 47 close to the threaded rod 2 48 is fixedly connected to a guide rod 49, and the outer surface of the threaded rod 2 48 is threadedly connected to a moving block 410. Two moving blocks 410 are symmetrically arranged, and the moving blocks 410 are fixedly connected to clamping jaws 411. The clamping jaws 411 are both located directly below the output shaft of the motor 42. The side of the fixed block 46 close to the bracket 47 is fixedly connected to a support plate 412, and the support plate 412 is rotatably connected to a worm 413 and a worm wheel 414.

[0019] Further, such as Figure 4 and Figure 5 As shown, the centering assembly also includes a drill rod 415, which is fixed to the outside of the handrail 3 by an elastic clip. The outer surface of the drill rod 415 is provided with a thread line, and the outer surface of the drill rod 415 is provided with a slot 416. The slot 416 is located below the thread line. There are four slots 416 equidistantly arranged in a ring, and a metal spring 417 is fixedly connected to the slot 416.

[0020] Further, such as Figure 2 and Figure 3 As shown, the base 41 is slidably connected to the outer surface of the vertical rod 22, and the limiting rod 45 is in a "T" shape.

[0021] Further, such as Figure 3 As shown, the outer surface of the threaded rod 48 is provided with two sections of thread lines in opposite directions, and the two moving blocks 410 are respectively located on the two sections of thread lines in opposite directions. The moving blocks 410 are both slidingly connected to the outer surface of the guide rod 49, and the end of the worm 413 away from the support plate 412 is fixedly connected to the threaded rod 48, and the worm 413 is meshed with the worm wheel 414, and the bottom surface of the worm wheel 414 is fixedly connected to a handle.

[0022] Further, such as Figures 6 to 9 As shown, a locking assembly is provided below the motor 42, and the locking assembly includes a rotating disk 51 rotatably connected to the bottom of the base 41. The rotating disk 51 is coaxial with the ring 43. A fixing plate 52 is fixedly connected to the side of the rotating disk 51 away from the base 41. Two fixing plates 52 are symmetrically provided. The two fixing plates 52 are commonly fixedly connected to a connecting seat 53. The connecting seat 53 is located between the two fixing plates 52. A square hole 1 5201 is opened on one of the fixing plates 52. A square hole 2 5301 is opened on the outer surface of the connecting seat 53. The square hole 1 5201 and the square hole 2 5301 are located on the same side. A cavity block 54 is fixedly connected to the fixing plate 52 with a square hole 5201. The cavity block 54 is located on the side of the fixing plate 52 away from the connecting seat 53. A pull rod 55 is slidably connected to the cavity block 54. The outer surface of the pull rod 55 is fixedly connected to a clamping block 56 and a compression spring 57. Two clamping blocks 56 are symmetrically arranged. The clamping blocks 56 are both in contact with the outer surface of the cavity block 54. The compression spring 57 is in a compressed state. One end of the pull rod 55 close to the connecting seat 53 is fixedly connected to a cavity tube 58. A trigger rod 59 is slidably connected to the cavity tube 58. The cavity tube 58 and the trigger rod 59 are both located inside the connecting seat 53.

[0023] Further, such as Figure 10 and Figure 11 As shown, the locking assembly also includes a compression spring 510 fixedly connected to the bottom of the rotating disk 51, and the compression spring 510 is in a compressed state. The end of the compression spring 510 away from the rotating disk 51 is fixedly connected to a cover plate 511, and the cover plate 511 is located at the top of the connecting seat 53 and contacts the top of the connecting seat 53. The cover plate 511 is rotatably connected to a connecting rod 512, and four connecting rods 512 are arranged in a ring at equal distances. The end of the connecting rod 512 away from the cover plate 511 is rotatably connected to a movable plate 513, and a guide plate 514 is fixedly connected to the side of the rotating disk 51 close to the compression spring 510, and four guide plates 514 are arranged in a ring at equal distances. A check pin 515 is slidably connected in the movable plate 513, and a spring 516 is fixedly connected to the check pin 515, and the spring 516 is in a compressed state.

[0024] Further, such as Figure 6 、 Figure 8 and Figure 9As shown, the rotating disk 51 is fixedly connected to the output shaft of the motor 42, and the rotating disk 51 is coaxial with the output shaft of the motor 42. The inner side wall of the connecting seat 53 is provided with a thread, and is adapted to the thread on the outer surface of the drill rod 415. The connecting seat 53 is threadedly connected to the drill rod 415. The end of the compression spring 1 57 away from the cavity tube 58 is fixedly connected to the cavity block 54. The trigger rod 59 is in the shape of an "I". The upper and lower parts of the trigger rod 59 are fixedly connected with a disc, and the radius of the disc is larger than the radius of the trigger rod 59. The cavity tube 58 and the trigger rod 59 are adapted to the square hole 1 5201 and the square hole 2 5301.

[0025] Further, such as Figure 10 and Figure 11 As shown, the cover plate 511 is slidingly connected to the two fixed plates 52, the cover plate 511 is located between the two fixed plates 52, the outer wall of the guide plate 514 is slidingly connected to the movable plate 513, the check pin 515 is adapted to the slot 416, and the end of the spring 516 away from the connecting seat 53 is fixedly connected to the movable plate 513.

[0026] While working: This device can align the axis of the drill rod 415 with the axis of the output shaft of the motor 42. The following are the detailed steps: When a worker needs to install a drill rod 415, he removes the drill rod 415 from the elastic clip on the outside of the handrail 3 and lifts the drill rod 415 by hand so that the drill rod 415 is located between the two clamping jaws 411. He then rotates the handle at the bottom of the worm gear 414 forward, causing the worm gear 414 to rotate forward, driving the worm 413 to rotate forward, and the worm 413 drives the threaded rod 2 48 to rotate forward together, so that the two moving blocks 410 respectively drive the clamping jaws 411 to move along the guide rod 49 in a direction toward each other; When both jaws 411 contact the outer surface of the drill rod 415 and clamp the drill rod 415, the worker stops turning the handle at the bottom of the worm gear 414. Due to the self-locking effect of the meshing between the worm gear 414 and the worm 413, the worm 413 is in a stationary state after the worker stops turning the handle, so the drill rod 415 remains in a stationary state. At this time, the drill rod 415 and the connecting seat 53 are located on the same axis. Since the connecting seat 53 and the output shaft of the motor 42 are located on the same axis, the drill rod 415 and the output shaft of the motor 42 are also located on the same axis. Then the staff member grabs the outer surface of the drill rod 415 and moves the drill rod 415 vertically upward, so that the limiting rod 45 moves vertically upward along the cavity column 44. When the drill rod 415 enters the connecting seat 53 and cannot move upward any further, it means that the thread lines on the outer surface of the drill rod 415 have contacted the thread lines on the inner wall of the connecting seat 53. Then the staff member rotates the drill rod 415 forward. During the forward rotation of the drill rod 415, the limiting rod 45 and the fixing block 46 make the ring 43 rotate forward together with the drill rod 415, further making the drill rod 415 maintain a stable posture during the forward rotation. When the thread lines on the outer surface of the drill rod 415 gradually fully engage with the thread lines on the inner wall of the connecting seat 53, the installation of the drill rod 415 is completed. After the drill rod 415 is installed, the worker reverses the handle at the bottom of the worm gear 414, causing the worm gear 414 to reverse, driving the worm 413 to reverse, and the worm 413 drives the threaded rod 2 48 to reverse together, so that the two moving blocks 410 respectively drive the clamping jaws 411 to move away from each other along the guide rod 49 until the two moving blocks 410 return to their initial positions, and the worker stops turning the handle.

[0027] During the above process, the centering effect of the drill rod 415 is achieved by the movement of the clamping jaws 411. Compared with the manual alignment method used in the prior art, the present device uses two clamping jaws 411 to clamp and center the drill rod 415, so that the drill rod 415 is located on the same axial line as the output shaft of the motor 42 before rotation and installation, thereby reducing the trial and error and repeated adjustment process in the subsequent installation of the drill rod 415, improving the installation efficiency of the drill rod 415, and effectively reducing improper operations in the process of manually tightening the drill rod 415 by traditional workers, thereby causing mechanical damage to the drill rod 415 or the connecting seat 53, such as avoiding problems such as damage to the connecting thread caused by forced insertion. In this way, the drill rod 415 can be smoothly and accurately inserted into the connecting seat 53.

[0028] During the above process, the cooperation between the cavity column 44 and the limit rod 45 ensures that the drill rod 415 is coaxial with the output shaft of the motor 42 after installation. Compared with the existing technology that uses manual tightening, the present device uses the drill rod 415 to rotate and install, and the limit rod 45 and the cavity column 44 drive the ring 43 to rotate together, and when the worker rotates the drill rod 415, the fixed block 46 rotates together with the limit rod 45, thereby rigidly limiting the drill rod 415 to effectively reduce the radial swing of the drill rod 415, and avoid the problem of the drill rod 415 deviating from the axial position of the connecting seat 53 due to operational errors during the traditional manual tightening of the drill rod 415 by workers. In this way, the control of the installation process of the drill rod 415 is increased, ensuring that the drill rod 415 is connected in a stable posture, and improving the installation accuracy.

[0029] The device can lock the drill rod 415 after the drill rod 415 is installed. The following are the detailed steps: During the rotational installation process of the drill rod 415, the drill rod 415 gradually enters the interior of the connecting seat 53, and the upper surface of the drill rod 415 contacts the disc at the bottom of the trigger rod 59 and pushes the trigger rod 59, causing the trigger rod 59 to move vertically upward until the rotational installation of the drill rod 415 is completed and the disc at the bottom of the trigger rod 59 contacts the bottom of the cavity tube 58. At this time, the drill rod 415 and the trigger rod 59 stop moving. When the check pin 515 enters the slot 416, the movable plate 513 is pressed against the outer surface of the drill rod 415, thereby fixing the drill rod 415. In the above process, the drill rod 415 can be locked by moving the movable plate 513 and the check pin 515. Compared with the threaded fixing method used in the prior art, the present device uses the movable plate 513 to clamp the drill rod 415 and the check pin 515 to insert the card slot 416, forming a double locking mechanism for the drill rod 415, which significantly improves the stability of the drill rod 415 during operation, and avoids the traditional technology that relies solely on threaded fixing of the drill rod 415. Since the thread wears after the equipment has been running for a long time, the drill rod 415 cannot be effectively fixed, which causes the drill rod 415 to loosen during operation. At the same time, the check pin 515 hits the metal spring 417 when entering the card slot 416, making a "click" sound. This is an intuitive locking completion signal. The worker can confirm that the drill rod 415 has been installed through the sound, thereby simplifying the operation process and reducing errors caused by human judgment.

[0030] After the drill rod 415 is installed, the worker starts the motor 42 through the controller, causing the output shaft of the motor 42 to drive the drill rod 415 to rotate together. The worker then starts the motor 21 through the controller, causing the base 41 to move vertically downward along the vertical rod 22, further causing the drill bit at the bottom of the drill rod 415 to drill a hole in the road surface. When the drill rod 415 needs to be removed, the worker pulls the pull rod 55. At this time, the block 56 leaves the outer wall of the cavity block 54, and the compression spring 1 57 is in a compressed state, so that the cavity tube 58 and the trigger rod 59 leave the connecting seat 53, and pass through the square hole 2 5301 and the square hole 1 5201 in turn, and then enter the cavity block 54. When the cavity tube 58 and the trigger rod 59 enter the interior of the cavity block 54, since the bottom of the trigger rod 59 no longer contacts the drill rod 415, the trigger rod 59 moves vertically downward along the cavity tube 58 under the action of gravity until it is When the disc at the top of the trigger rod 59 contacts the top of the cavity tube 58, the trigger rod 59 stops moving downward. The worker then reverses the drill rod 415, causing the threads on the outer surface of the drill rod 415 to gradually disengage from the threads on the inner wall of the connecting seat 53. At this point, the drill rod 415 is disassembled. The worker then lets go. With the help of the rebound force of the compression spring 1 57, the pull rod 55 passes through the square hole 1 5201 and the square hole 2 5301 in turn and re-enters the interior of the connecting seat 53. When the block 56 contacts the outer wall of the cavity block 54 again, the pull rod 55 stops moving. When the drill rod 415 needs to be installed again, the above steps are repeated.

[0031] The above descriptions are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A drilling device for road construction, comprising a cart (1), characterized in that: The trolley (1) is fixedly connected to a motor (21), a vertical rod (22) and an armrest (3); the output shaft of the motor (21) is fixedly connected to a threaded rod (23); and the threaded rod (23) is rotatably connected to the trolley (1); A centering assembly is provided below the motor (21), and the centering assembly includes a base (41) threadedly connected to a threaded rod (23), the upper surface of the base (41) is fixedly connected to a motor (42), the bottom of the base (41) is rotatably connected to a ring (43), the bottom of the ring (43) is fixedly connected to a cavity column (44), two cavity columns (44) are symmetrically provided, a limiting rod (45) is slidably connected in the cavity column (44), and the two limiting rods (45) are fixedly connected to a fixed block (46), and the fixed block (46) is fixedly connected to the fixed block (46). ) is fixedly connected to the outer wall of the bracket (47), the bracket (47) is rotatably connected to the second threaded rod (48), the bracket (47) is fixedly connected to the guide rod (49), the second threaded rod (48) is threadedly connected to a moving block (410), two moving blocks (410) are symmetrically arranged, the moving blocks (410) are fixedly connected to a clamping claw (411), the fixed block (46) is fixedly connected to a support plate (412) on a side close to the bracket (47), and the support plate (412) is rotatably connected to a worm (413) and a worm wheel (414).

2. A road construction drilling equipment according to claim 1, characterized in that: The centering assembly further comprises a drill rod (415), the drill rod (415) being fixed to the outside of the handrail (3) via an elastic clip, the outer surface of the drill rod (415) being provided with a threaded line, the outer surface of the drill rod (415) being provided with a card slot (416), four of the card slots (416) being equidistantly arranged in an annular pattern, and a metal spring (417) being fixedly connected in the card slot (416).

3. A road construction drilling equipment according to claim 1, characterized in that: The base (41) is slidably connected to the vertical rod (22), and the limiting rod (45) is in a "T" shape.

4. A road construction drilling equipment according to claim 1, characterized in that: The outer surface of the second threaded rod (48) is provided with two sections of thread lines in opposite directions. The movable blocks (410) are all slidably connected to the guide rod (49). The worm (413) is fixedly connected to the second threaded rod (48). The worm (413) is meshedly connected to the worm wheel (414). The bottom of the worm wheel (414) is fixedly connected to a handle.

5. A road construction drilling equipment according to claim 1, characterized in that: A locking assembly is provided below the motor (42), and the locking assembly includes a rotating disk (51) rotatably connected to the bottom of the base (41), a fixed plate (52) is fixedly connected to the bottom of the rotating disk (51), two fixed plates (52) are symmetrically provided, and the fixed plates (52) are commonly fixedly connected to a connecting seat (53), one of the fixed plates (52) is provided with a square hole 1 (5201), and the outer surface of the connecting seat (53) is provided with a square hole 2 (5301), one of the fixed plates (52) is fixedly connected to a cavity block (54), a pull rod (55) is slidably connected in the cavity block (54), a clamping block (56) and a compression spring 1 (57) are fixedly connected to the outer surface of the pull rod (55), and two clamping blocks (56) are symmetrically provided, and one end of the pull rod (55) close to the connecting seat (53) is fixedly connected to a cavity tube (58), and a trigger rod (59) is slidably connected in the cavity tube (58).

6. A road construction drilling equipment according to claim 5, characterized in that: The locking assembly further comprises a second compression spring (510) fixedly connected to the bottom of the rotating disk (51), the end of the second compression spring (510) away from the rotating disk (51) is fixedly connected to a cover plate (511), the cover plate (511) is rotatably connected to a connecting rod (512), four connecting rods (512) are arranged in an annular pattern at equal intervals, the end of the connecting rod (512) away from the cover plate (511) is rotatably connected to a movable plate (513), the bottom of the rotating disk (51) is fixedly connected to a guide plate (514), four guide plates (514) are arranged in an annular pattern at equal intervals, a check pin (515) is slidably connected in the movable plate (513), and a spring (516) is fixedly connected to the check pin (515).

7. A road construction drilling equipment according to claim 5, characterized in that: The rotating disk (51) is fixedly connected to the output shaft of the motor (42); the inner wall of the connecting seat (53) is provided with a thread line, which is adapted to the thread line on the outer surface of the drill rod (415); the connecting seat (53) is threadedly connected to the drill rod (415); the compression spring 1 (57) is fixedly connected to the cavity block (54); the trigger rod (59) is in the shape of an "I"; the upper and lower parts of the trigger rod (59) are fixedly connected to a circular disk, and the radius of the circular disk is greater than the radius of the trigger rod (59); the cavity tube (58) and the trigger rod (59) are adapted to the square hole 1 (5201) and the square hole 2 (5301).

8. A road construction drilling equipment according to claim 6, characterized in that: The cover plate (511) is slidably connected to the fixed plate (52), the guide plate (514) is slidably connected to the movable plate (513), the check pin (515) is adapted to the slot (416), and the spring (516) is fixedly connected to the movable plate (513).

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