A new type of joint forming machine for roller compacted concrete

Abstract

This utility model belongs to the technical field of concrete construction equipment, and particularly relates to a novel jointing machine for roller-compacted concrete. It includes a compactor, a compaction plate installed at the bottom of the compactor, and a vibration device installed at the top of the compactor. The compaction plate has an installation notch in the middle, within which a cutting blade is installed. Two sets of guide slides are fixed to both sides of the top of the installation notch. By providing an installation notch in the middle of the compaction plate, the cutting blade slides up and down along the guide slides via a positioning seat, achieving vertical guidance and preventing blade misalignment. Furthermore, a locking box on the cutting blade is connected to a lifting plate outside a reciprocating screw. When the reciprocating screw rotates, the threaded sleeve on the lifting plate can drive the cutting blade to rise and fall under the action of the threads, thereby effectively and flexibly controlling the cutting depth of the cutting blade, improving the flexibility of the device during use, and increasing construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of concrete construction equipment technology, and in particular to a novel jointing machine for roller-compacted concrete. Background Technology

[0002] Roller-compacted concrete (RCC) jointing machines are key equipment used in water conservancy and hydropower projects to manually create joints during the construction of RCC dams. Their core function is to control the temperature stress and shrinkage deformation of the dam body by forming regular and stable joint surfaces inside the concrete, thereby preventing the generation of harmful cracks and ensuring the safety and durability of the dam structure.

[0003] Chinese Patent CN221118171U, authorized by the Ministry of Industry and Information Technology, discloses a mobile hydraulic joint cutting machine for roller-compacted concrete. This machine includes a hydraulic tamper, with a tamper mounted on its boom. A tamping plate is connected to the tamper via a shock-absorbing mechanism, and a cutting blade is provided on the lower surface of the tamping plate. The cutting blade is perpendicular to the lower surface of the tamping plate, and its length direction is consistent with the travel direction of the hydraulic tamper. A vibration device is also provided on the tamper, mounted on the upper surface of the tamping plate. This invention quickly and cost-effectively converts a hydraulic tamper into a mobile hydraulic joint cutting machine. The rapid, repeated up-and-down movement of the hydraulic tamper completes the joint cutting of roller-compacted concrete. It allows for quick and low-cost conversion, is easy to move, solves the problem of large cutting workloads, ensures neat joints, minimizes disturbance to the concrete, reduces manpower workload, and effectively increases cutting speed.

[0004] However, the above technical solution still has the following shortcomings in actual use. The cutting blade in the equipment is fixed to the compaction plate by welding. Since different roller compacted concrete projects have significantly different requirements for joint depth, the welded blade cannot flexibly adjust the depth according to the project needs. Furthermore, it is difficult to quickly replace the cutting blade when it is damaged. Therefore, we propose a new type of roller compacted concrete jointing machine to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a novel jointing machine for roller-compacted concrete to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel roller-compacted concrete jointing machine includes a compactor, a compaction plate installed at the bottom of the compactor, and a vibration device installed at the top of the compactor. The compaction plate has an installation cutout in the middle, and a cutting blade is installed inside the installation cutout. Two sets of guide slides are fixed on both sides of the top of the installation cutout. Four sets of positioning seats corresponding to the positions of the guide slides are installed on the upper end of the cutting blade. Guide sliding holes matching the size of the guide slides are opened on the positioning seats. The cutting blade drives the four sets of positioning seats to move outside the four sets of guide slides. An installation seat is installed at the middle of the top of the cutting blade, and a locking box is installed at the top of the installation seat. A rotating seat is installed at the middle of the side end of the installation cutout. A reciprocating screw is rotatably connected inside the rotating seat. A lifting plate is installed outside the reciprocating screw. The middle of the lifting plate is threadedly connected to the reciprocating screw via a threaded sleeve. The locking box is connected to the lifting plate via a locking assembly. A driving assembly is installed at the bottom end of the reciprocating screw.

[0007] As an improved technical solution, the drive assembly includes a driven gear fixed to the outside of the lower end of the reciprocating lead screw, a servo motor is installed at the front end of the reciprocating lead screw, and a driving gear is installed at the output end of the servo motor, the driving gear meshing with the driven gear.

[0008] As an improved technical solution, the locking assembly includes a slide rod installed inside the lock box, a movable plate slidably connected to the outside of the slide rod, two sets of locking rods fixed to the outer wall of the front end of the movable plate, a push handle installed at the top of the movable plate, a return spring wound around the outside of the slide rod, and two sets of locking holes opened at the rear end of the lifting plate, with the front ends of the two sets of locking rods inserted into the two sets of locking holes.

[0009] As an improved technical solution, the lifting plate has a slot at the top of the end facing the mounting blade, and a locking block is installed at the middle of the front end of the threaded sleeve.

[0010] As an improved technical solution, the input terminal of the servo motor is electrically connected to an external controller via a wire.

[0011] As an improved technical solution, the movable plate has a sliding hole in the middle that corresponds to the sliding rod.

[0012] As an improved technical solution, the two ends of the reset spring are respectively connected to the outer wall of the movable plate and the inner wall of the lock box, and the movable plate is elastically connected to the inner wall of the lock box through the reset spring.

[0013] After adopting the above technical solution, the beneficial effects of this utility model are:

[0014] I. This utility model features an installation slit in the center of the compaction plate, allowing the cutting blade to slide up and down along the guide column via a positioning seat, achieving vertical guidance and preventing the cutting blade from deviating. Furthermore, the locking box on the cutting blade is connected to a lifting plate outside the reciprocating screw. When the reciprocating screw rotates, the threaded sleeve on the lifting plate can drive the cutting blade to rise and fall under the action of the threads, thus effectively and flexibly controlling the cutting depth of the cutting blade, improving the flexibility of the device during use, and increasing construction efficiency.

[0015] II. This utility model has a movable plate that can move back and forth inside the lock box. By pushing the push handle, the movable plate moves two sets of locking rods backward along the surface of the slide rod. When the two sets of locking rods are completely out of the two sets of lock holes on the lifting plate, the cutting blade can be lifted upward. When the four sets of positioning seats are completely out of the surface of the guide slide column, the cutting blade can be quickly disassembled, which facilitates the quick replacement of the entire cutting blade and improves the convenience of cutting blade replacement. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model in a partially disassembled state;

[0019] Figure 4 For the present utility model Figure 3 A schematic diagram of the rear view structure;

[0020] Figure 5 This is a partial cross-sectional view of the interior of the lock box of this utility model.

[0021] Figure 6 For the present utility model Figure 3 A magnified structural diagram at point A.

[0022] In the diagram: 1. Compactor; 2. Compactor plate; 3. Vibration device; 4. Cutting blade; 5. Mounting blade; 6. Positioning seat; 7. Guide slide hole; 8. Guide slide column; 9. Mounting seat; 10. Lock box; 11. Rotary seat; 12. Reciprocating lead screw; 13. Lifting plate; 14. Threaded sleeve; 15. Driven gear; 16. Servo motor; 17. Drive gear; 18. Slide rod; 19. Movable plate; 20. Locking rod; 21. Push handle; 22. Return spring; 23. Locking hole; 24. Locking block; 25. Locking groove. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] This utility model provides a technical solution: such as Figures 1 to 6 As shown in this embodiment, a novel roller-compacted concrete jointing machine includes a compactor 1 and a compaction plate 2 installed at the bottom of the compactor 1. The tamping plate 2 has a vibrating device 3 installed on the upper end of the tamping plate 1. The tamping plate 2 has an installation blade 5 in the middle. The installation blade 5 has a cutting blade 4 installed inside. Two sets of guide slides 8 are fixed on both sides of the top of the installation blade 5. The cutting blade 4 has four sets of positioning seats 6 installed on the upper end, corresponding to the positions of the guide slides 8. The positioning seats 6 have guide sliding holes 7 that match the size of the guide slides 8. The cutting blade 4 drives the four sets of positioning seats 6 to move to the outside of the four sets of guide slides 8. The cutting blade 4 has an installation seat 9 installed in the middle of the top of the cutting blade 4. The top of the installation seat 9 has a lock box 10 installed. The side end of the installation blade 5 has a rotating seat 11 installed in the middle. The rotating seat 11 is rotatably connected to the reciprocating screw 12. The reciprocating screw 12 is provided with a lifting plate 13 outside. The middle of the lifting plate 13 is threadedly connected to the reciprocating screw 12 through a threaded sleeve 14. The lock box 10 is connected to the lifting plate 13 through a locking component. The bottom of the reciprocating screw 12 is provided with a driving component.

[0025] By providing an installation notch 5 in the middle of the compaction plate 2, the cutting blade 4 slides up and down along the guide slide column 8 via the positioning seat 6, achieving vertical guidance and preventing the cutting blade 4 from deviating. The locking box 10 on the cutting blade 4 is then connected to the lifting plate 13 outside the reciprocating screw 12. When the reciprocating screw 12 rotates, the threaded sleeve 14 on the lifting plate 13 can drive the cutting blade 4 to rise and fall under the action of the thread, thereby effectively and flexibly controlling the cutting depth of the cutting blade 4, improving the flexibility of the device during use, and increasing construction efficiency.

[0026] In other embodiments, the drive assembly includes a driven gear 15 fixed to the outside of the lower end of the reciprocating screw 12, a servo motor 16 mounted at the front end of the reciprocating screw 12, and a drive gear 17 mounted at the output end of the servo motor 16, the drive gear 17 meshing with the driven gear 15.

[0027] By starting the servo motor 16, the servo motor 16 drives the drive gear 17 to rotate, which in turn allows the driven gear 15 to drive the reciprocating screw 12 to rotate under the action of the drive gear 17. This allows the threaded sleeve 14 on the lifting plate 13 to drive the cutting blade 4 to adjust its height under the action of the thread, thereby precisely controlling the cutting depth.

[0028] In other embodiments, the locking assembly includes a slide bar 18 installed inside the lock box 10, a movable plate 19 slidably connected to the outside of the slide bar 18, two sets of locking rods 20 fixed to the outer wall of the front end of the movable plate 19, a push handle 21 installed at the top of the movable plate 19, a return spring 22 wound around the outside of the slide bar 18, and two sets of lock holes 23 opened at the rear end of the lifting plate 13, with the front ends of the two sets of locking rods 20 inserted into the two sets of lock holes 23;

[0029] By installing a movable plate 19 that can move back and forth inside the lock box 10, when it is necessary to disassemble the cutting blade 4, the push handle 21 can be pushed to make the movable plate 19 move the two sets of locking rods 20 backward along the surface of the slide rod 18, and make the movable plate 19 press the two sets of return springs 22. When the two sets of locking rods 20 are completely out of the two sets of lock holes 23 on the lifting plate 13, the cutting blade 4 can then be lifted upward, and the cutting blade 4 can move the four sets of positioning seats 6 upward along the guide slide column 8. When the four sets of positioning seats 6 are completely out of the surface of the guide slide column 8, the disassembly of the cutting blade 4 can be completed quickly, which facilitates the quick replacement of the entire cutting blade 4 and improves the convenience of replacing the cutting blade 4.

[0030] In other embodiments, the top of the lifting plate 13 facing the mounting blade 5 is provided with a slot 25, and a locking block 24 is installed in the middle of the front end of the threaded sleeve 14;

[0031] With this design, when the cutting blade 4 is installed, inserting the cutting blade 4 into the installation slot 5 will allow the lock box 10 to drive the locking block 24 to quickly insert into the slot 25 on the lifting plate 13, thereby quickly completing the initial positioning of the lock box 10 and the lifting plate 13.

[0032] In other embodiments, the input terminal of the servo motor 16 is electrically connected to an external controller via a wire;

[0033] This design allows an external controller to switch the servo motor 16 on and off in real time and supply power, ensuring that the servo motor 16 can be used normally.

[0034] In other embodiments, the movable plate 19 has a sliding hole in the middle corresponding to the slide rod 18;

[0035] This design allows the movable plate 19 to move smoothly and steadily along the surface of the slide bar 18, ensuring the stability of the movable plate 19 during movement.

[0036] In other embodiments, the two ends of the return spring 22 are respectively connected to the outer wall of the movable plate 19 and the inner wall of the lock box 10, and the movable plate 19 is elastically connected to the inner wall of the lock box 10 through the return spring 22;

[0037] This design allows the return spring 22 to continuously apply a spring force toward the threaded sleeve 14 to the movable plate 19, allowing the two sets of locking rods 20 on the movable plate 19 to be quickly inserted into the two sets of locking holes 23 on the lifting plate 13.

[0038] This utility model provides a novel jointing machine for roller-compacted concrete, the specific working principle of which is as follows:

[0039] When the cutting blade 4 needs to be installed, the positioning seat 6 of the cutting blade 4 is aligned with the guide slide column 8 of the compaction plate 2 and inserted. Then, it is connected to the lifting plate 13 through the locking box 10, and the return spring 22 pushes the movable plate 19 so that the locking rod 20 is inserted into the locking hole 23 of the lifting plate 13 to achieve locking. When the height of the cutting blade 4 needs to be adjusted, the servo motor 16 is started to drive the active gear 17 to drive the driven gear 15 to rotate, so that the reciprocating screw 12 rotates and the threaded sleeve 14 converts the rotational motion into the linear motion of the lifting plate 13, which drives the cutting blade 4 to rise and fall along the guide slide column 8 to achieve precise depth adjustment. Then, the vibration device 3 drives the cutting blade 4 to vibrate at high frequency and cut into the concrete. The compactor 1 provides downward pressure to ensure neat cuts and reduce concrete disturbance.

[0040] The electrical components mentioned in this article are all electrically connected to an external main controller and industrial power supply, and the main controller can be a conventional known device such as a computer that provides control.

[0041] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A new type of joint forming machine for roller compacted concrete, comprising a tamper (1), a tamper plate (2) mounted on the bottom of the tamper (1) and a vibrating device (3) arranged on the upper end of the tamper (1), characterized in that: The tamping plate (2) has an installation notch (5) in the middle, and a slitting blade (4) is installed inside the installation notch (5). Two sets of guide slides (8) are fixed on both sides of the top of the installation notch (5). Four sets of positioning seats (6) corresponding to the positions of the guide slides (8) are installed on the upper end of the slitting blade (4). The positioning seats (6) have guide sliding holes (7) that match the size of the guide slides (8). The slitting blade (4) drives the four sets of positioning seats (6) to move to the outside of the four sets of guide slides (8). A mounting base (9) is installed at the top center. A lock box (10) is installed at the top of the mounting base (9). A rotating seat (11) is installed at the middle of the side end of the mounting blade (5). A reciprocating screw (12) is rotatably connected inside the rotating seat (11). A lifting plate (13) is provided outside the reciprocating screw (12). The middle part of the lifting plate (13) is threadedly connected to the reciprocating screw (12) through a threaded sleeve (14). The lock box (10) is connected to the lifting plate (13) through a locking assembly. A drive assembly is provided at the bottom end of the reciprocating screw (12).

2. A new type of joint forming machine for roller compacted concrete according to claim 1, characterized in that: The drive assembly includes a driven gear (15) fixed outside the lower end of the reciprocating screw (12), a servo motor (16) is installed at the front end of the reciprocating screw (12), and a drive gear (17) is installed at the output end of the servo motor (16), and the drive gear (17) meshes with the driven gear (15).

3. A novel jointer for roller compacted concrete as claimed in claim 1, wherein: The locking assembly includes a slide rod (18) installed inside the lock box (10), a movable plate (19) slidably connected to the outside of the slide rod (18), two sets of locking rods (20) fixed on the outer wall of the front end of the movable plate (19), a push handle (21) installed on the top of the movable plate (19), a return spring (22) wound around the outside of the slide rod (18), and two sets of lock holes (23) opened at the rear end of the lifting plate (13), with the front ends of the two sets of locking rods (20) inserted into the two sets of lock holes (23).

4. A novel jointer for roller compacted concrete as claimed in claim 1, wherein: The lifting plate (13) has a slot (25) at the top of the end facing the mounting knife edge (5), and a locking block (24) is installed at the middle of the front end of the threaded sleeve (14).

5. A novel jointer for roller compacted concrete as claimed in claim 2, wherein: The input terminal of the servo motor (16) is electrically connected to an external controller via a wire.

6. A novel jointer for roller compacted concrete as claimed in claim 3, wherein: The movable plate (19) has a sliding hole in the middle that corresponds to the sliding rod (18).

7. A novel jointer for roller compacted concrete as claimed in claim 3, wherein: The two ends of the reset spring (22) are respectively connected to the outer wall of the movable plate (19) and the inner wall of the lock box (10). The movable plate (19) is elastically connected to the inner wall of the lock box (10) through the reset spring (22).

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