Automatic edge trimmer for prefabricated bridge after concrete forming

Abstract

The invention provides an automatic edge trimmer for a prefabricated bridge after concrete forming, and relates to the technical field of concrete prefabricated part trimming, the automatic edge trimmer comprises a rack, the upper surface of the rack is fixedly connected with a mounting frame, the surface of the mounting frame is rotatably connected with a threaded rod through a bearing, and the surface of the threaded rod is in threaded connection with a threaded lifting frame; the surface of the threaded lifting frame is rotatably connected with a push rod through a rotating shaft, the surface of the mounting frame is slidably connected with a sliding plate, the push rod is rotatably connected with the sliding plate through a rotating shaft, and the surface of the sliding plate is rotatably connected with a reciprocating lead screw through a bearing. The clamping stability and precision are ensured, meanwhile, the working efficiency is improved, centering clamping of the workpiece is achieved, it is ensured that the workpiece is subjected to uniform and stable clamping force in the clamping process, deviation or sliding of the workpiece in the clamping process is effectively avoided, the clamping device can adapt to workpieces of different sizes, and diversified production requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of finishing of prefabricated concrete parts, in particular to an automatic trimming machine for prefabricated bridge concrete after molding. Background Art

[0002] Prefabricated bridges are bridges with concrete structures. Prefabricated concrete prefabricated panels can be industrialized in factories and can be directly installed after being transported to the site. Most prefabricated concrete prefabricated panels can be assembled into temporary roads and are widely used in bridge construction in my country. When producing prefabricated concrete prefabricated panels, curved surfaces are usually set at the joints to facilitate the splicing of multiple prefabricated concrete prefabricated panels, thereby improving stability. During the production process, the gaps inside the template often cause burrs and irregular shapes on the outer surface of the prefabricated concrete prefabricated panels, affecting the connection between the prefabricated panels. At this time, it is necessary to trim the outer wall of the prefabricated concrete prefabricated panels after they are formed. However, in the prior art, due to the presence of curved surfaces at the joints, trimming is difficult and the trimming error rate is high. At the same time, during trimming, the prefabricated concrete prefabricated panels are easily offset by force, resulting in poor trimming effect. In addition, during the trimming process, a large amount of debris will be accumulated on the prefabricated concrete prefabricated panels, which is easy to affect the subsequent grinding. For this reason, we propose an automatic trimming machine after the prefabricated bridge concrete is formed. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and to propose an automatic trimming machine for prefabricated bridge concrete after molding.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic trimming machine for precast bridge concrete after forming, comprising a frame, the upper surface of the frame is fixedly connected to a mounting frame, the surface of the mounting frame is rotatably connected to a threaded rod via a bearing, the surface of the threaded rod is threadedly connected to a threaded lifting frame, the surface of the threaded lifting frame is rotatably connected to a push rod via a rotating shaft, the surface of the mounting frame is slidably connected to a sliding plate, the push rod and the sliding plate are rotatably connected via a rotating shaft, the surface of the sliding plate is rotatably connected to a reciprocating screw rod via a bearing, the outer surface of the reciprocating screw rod is threadedly connected to a supporting lifting frame, the lower surface of the supporting lifting frame is fixedly connected to a connecting frame, and the surface of the connecting frame is fixedly connected to a clamping positioning column.

[0005] Preferably, a support rail and an arc rail are provided on the surface of the mounting frame, an electric trolley is slidably connected to the surface of the support rail and the arc rail, an electric slide rail is provided at the bottom of the electric trolley, a sliding frame is slidably connected to the surface of the electric slide rail, a first motor is fixedly connected to the lower surface of the sliding frame, and a grinding wheel is fixedly connected to the output end of the first motor.

[0006] Preferably, the upper surface of the mounting frame is fixedly connected to a positioning track, the surface of the positioning track is provided with a soft track, the lower surface of the soft track is rotatably connected to a positioning block via a bearing, the outer surface of the support track is fixedly connected to a positioning plate, the surface of the positioning plate is installed with a cylinder, and the output end of the cylinder is fixedly connected to the positioning block.

[0007] Preferably, the lower surface of the mounting frame is rotatably connected to the first rotating rod, the rotating sleeve and the second rotating rod through a bearing, the rotating sleeve is sleeved on the outer surface of the first rotating rod, the surfaces of the first rotating rod and the rotating sleeve are rotatably connected to the two first gears through bearings, the surface of the second rotating rod is fixedly connected to the two second gears, the inner surfaces of the two first gears are provided with pawls, the surfaces of the two first rotating rods are fixedly connected to ratchets, the ratchets are meshed with the pawls, the surface of the reciprocating screw rod is fixedly connected to two fourth gears, the two first gears are meshed with the fourth gears, the outer surfaces of the first rotating rod are respectively connected to the adjacent second rotating rods through synchronous belt transmission, the upper surface of the electric trolley is rotatably connected to the third rotating rod through a bearing, and the surface of the third rotating rod is fixedly connected to the third gear.

[0008] Preferably, a dust cover is fixedly connected to the lower surface of the sliding frame, a through hole is opened on the lower surface of the dust cover, and a filter fan is installed on the surface of the dust cover.

[0009] Preferably, the lower surface of the sliding plate is fixedly connected to a limiting frame, and the limiting frame is slidably connected to the connecting frame.

[0010] Preferably, a conveyor is installed on the surface of the frame, and a dust collection box is fixedly connected to the outer surface of the frame.

[0011] Preferably, a second motor is mounted on the upper surface of the mounting frame, and an output end of the second motor is fixedly connected to the threaded rod.

[0012] Preferably, the reciprocating screw is rotatably connected to the mounting frame via a bearing.

[0013] Preferably, a limiting groove is provided on the surface of the mounting frame, a limiting block is fixedly connected to the lower surface of the sliding plate, and the limiting block is slidably connected to the limiting groove.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are 1. The present invention proposes an automatic trimming machine for precast bridge concrete after forming, which will transport it to a second conveyor and transport the precast concrete panels between the clamping and positioning columns, and the second motor drives the threaded rod to rotate, and the threaded rod drives the push rod to rotate through the threaded lifting frame, and the other ends of the multiple push rods drive the limit frame to move through the sliding plate, so that the connecting frame drives the clamping and positioning columns to move and clamp the precast concrete panels. By accurately positioning and clamping multiple sides, the stability and accuracy of clamping are ensured, and the work efficiency is improved at the same time, the centering clamping of the workpiece is achieved, ensuring that the workpiece is subjected to a uniform and stable clamping force during the clamping process, effectively avoiding the workpiece from deflecting or sliding during the clamping process, and being able to adapt to workpieces of different sizes to meet diversified production needs.

[0015] 2. The present invention proposes an automatic trimming machine for precast bridge concrete after forming. The first motor drives the grinding wheel and the assembled concrete precast panel to grind. The electric cart slides counterclockwise along the supporting track. At this time, the edge of the assembled concrete precast panel can be polished. When the assembled concrete precast panel has an arc-shaped edge, the two soft tracks on the top move to the other side synchronously. At this time, the soft track can connect the supporting track and the arc-shaped track, and close the supporting track. At this time, the electric cart can enter the arc-shaped track along the soft slide rail. At this time, the arc-shaped surface of the assembled concrete precast panel can be trimmed by the grinding wheel. The work efficiency can be improved by fast track change, which is convenient for grinding the edges of the arc-shaped assembled concrete precast panels. By changing the track, the grinding route can be flexibly adjusted to avoid detours, thereby speeding up the trimming speed and improving work efficiency.

[0016] 3. The present invention proposes an automatic trimming machine for precast bridge concrete after forming. When the next edge is about to be polished, the electric cart drives the third gear on the top to rotate, and the third gear contacts the second gear at the corner and drives the second rotating rod to rotate. The second rotating rod drives the next first rotating rod to rotate through the synchronous belt, and the first rotating rod drives the bottom first gear to rotate through the ratchet and the pawl, so that the rotation of the bottom fourth gear drives the reciprocating screw to rotate, and the reciprocating screw drives the clamping positioning column to move upward through the supporting lifting frame, so that the clamping positioning column leaves the assembled concrete precast panel. At this time, the next edge can continue to be trimmed, so that during the polishing process, the side to be polished will not be blocked by the clamping positioning column, which can significantly improve the polishing efficiency and effect, and the grinding wheel can move more freely and cover a larger area, thereby speeding up the polishing speed. In addition, the absence of objects blocking can ensure the uniformity and consistency of polishing, making the polishing effect more ideal.

[0017] 4. The present invention proposes an automatic trimming machine for precast bridge concrete after molding. When the electric trolley moves to the next corner, the third gear drives the rotating sleeve to rotate through the second gear, and the rotating sleeve drives the top first gear to rotate through the ratchet and the pawl. At this time, the reciprocating screw drives the supporting lifting frame to move downward, and drives the clamping positioning column to continue to position the assembled concrete precast panel. During the descent of the assembled concrete precast panel, the reciprocating screw rotates, and the fourth gear at the bottom drives the first gear to rotate. A pawl ratchet is arranged inside the first gear. At this time, the pawl cannot drive the ratchet to rotate, thereby not driving the rotating rod to rotate, so that when trimming, the other three edges are always clamped, which can avoid the assembled concrete precast panel being subjected to a large external force to cause position displacement during grinding and trimming, which ultimately leads to poor grinding effect, and can reduce the vibration and deformation of the workpiece during the trimming process, thereby reducing the scrap rate, improving the repetition accuracy of the workpiece, and making the quality of products in the same batch more consistent.

[0018] 5. The present invention proposes an automatic trimming machine for prefabricated bridge concrete after forming. During the movement of the electric cart, the sliding frame drives the dust cover at the bottom to move and starts the filter fan. The filter fan can suck the debris generated during grinding into the dust cover. The filter fan is provided with a filter screen. At this time, the debris can fall from the through hole at the bottom into the dust collecting box. By timely removing the debris generated during grinding and trimming, the equipment can be kept in good operating condition, reducing downtime, thereby improving overall production efficiency. In addition, it avoids the situation where the debris adheres to the surface of the product and affects the appearance quality and performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention provides a schematic diagram of the main structure of an automatic trimming machine for precast bridge concrete after forming; Figure 2 The present invention provides a partial structural schematic diagram of an automatic trimming machine for precast bridge concrete after forming; Figure 3 The present invention provides a schematic diagram of the internal structure of a mounting frame of an automatic trimming machine for precast bridge concrete after forming; Figure 4 for Figure 3 A schematic diagram of the partially enlarged structure at center A; Figure 5 The present invention provides a schematic diagram of the partial structure of the support track of an automatic trimming machine for precast bridge concrete after forming; Figure 6 for Figure 5 Schematic diagram of the local structure at B in the middle; Figure 7 The present invention provides a schematic diagram of a dust cover of an automatic trimming machine after precast bridge concrete is formed, in a partial downward view; Figure 8 for Figure 7 A schematic diagram of the partially enlarged structure at C in the middle; Fig. 9 The present invention provides a schematic diagram of the motion trajectory of an electric cart of an automatic trimming machine for precast bridge concrete after molding.

[0020] Legend: 1. Frame; 2. Mounting frame; 3. Threaded rod; 4. Threaded lifting frame; 5. Push rod; 6. Sliding plate; 7. Reciprocating screw rod; 8. Support lifting frame; 9. Connecting frame; 10. Clamping and positioning column; 11. Support track; 12. Electric trolley; 13. Electric slide rail; 14. Sliding frame; 15. First motor; 16. Grinding wheel; 17. Positioning track; 18. Soft track; 19. Positioning block; 20. Positioning plate; 21. Cylinder; 22. First rotating rod; 23. Rotating sleeve; 24. Second rotating rod; 25. First gear; 26. Second gear; 27. Fourth gear; 28. Third rotating rod; 29. ​​Third gear; 30. Dust cover; 31. Filter fan; 32. Dust collection box; 33. Limiting frame; 34. Conveyor; 37. Second motor; 38. Limiting block; 39. Arc track. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] like Figure 1-9 As shown, an automatic trimming machine for prefabricated bridge concrete after molding comprises a frame 1, a mounting frame 2 is fixedly connected to the upper surface of the frame 1, a threaded rod 3 is rotatably connected to the surface of the mounting frame 2 via a bearing, a threaded lifting frame 4 is threadedly connected to the surface of the threaded rod 3, a push rod 5 is rotatably connected to the surface of the threaded lifting frame 4 via a rotating shaft, a sliding plate 6 is slidably connected to the surface of the mounting frame 2, the push rod 5 and the sliding plate 6 are rotatably connected via a rotating shaft, a reciprocating screw rod 7 is rotatably connected to the surface of the sliding plate 6 via a bearing, a supporting lifting frame 8 is threadedly connected to the outer surface of the reciprocating screw rod 7, a connecting frame 9 is fixedly connected to the lower surface of the supporting lifting frame 8, and a clamping positioning column 10 is fixedly connected to the surface of the connecting frame 9.

[0024] The effect achieved by the entire embodiment 1 is that the second motor 37 drives the threaded rod 3 to rotate, the threaded rod 3 drives the threaded lifting frame 4 to move upward, the threaded lifting frame 4 drives the push rod 5 to rotate, the other ends of the multiple push rods 5 pull the sliding plate 6 together, the sliding plate 6 drives the limit frame 33 to move, the limit frame 33 drives the connecting frame 9 to move, the connecting frame 9 drives the clamping positioning column 10 to move, and clamps the assembled concrete precast panel.

[0025] like Figure 1-9 As shown, the surface of the mounting frame 2 is provided with a supporting rail 11 and an arc-shaped rail 39, the surfaces of the supporting rail 11 and the arc-shaped rail 39 are slidably connected with an electric trolley 12, the bottom of the electric trolley 12 is provided with an electric slide rail 13, the surface of the electric slide rail 13 is slidably connected with a sliding frame 14, the lower surface of the sliding frame 14 is fixedly connected with a first motor 15, the output end of the first motor 15 is fixedly connected with a grinding wheel 16, the upper surface of the mounting frame 2 is fixedly connected with a positioning rail 17, the surface of the positioning rail 17 is provided with a soft rail 18, the lower surface of the soft rail 18 is rotatably connected with a positioning block 19 through a bearing, the outer surface of the support rail 11 is fixedly connected with a positioning plate 20, the surface of the positioning plate 20 is installed with a cylinder 21, and the output end of the cylinder 21 is fixedly connected to the positioning block 19.

[0026] The effect is that the electric slide rail 13 drives the sliding frame 14 to approach the assembled concrete precast panel, the sliding frame 14 drives the motor to move, the first motor 15 drives the grinding wheel 16 fixed at the output end to approach the assembled concrete precast panel, the first motor 15 drives the grinding wheel 16 and the assembled concrete precast panel to grind, the electric trolley 12 is started, and the electric trolley 12 slides counterclockwise along the support rail 11, at this time, the edge of the assembled concrete precast panel can be grinded, when the assembled concrete precast panel is an arc-shaped edge, at this time, the two cylinders 21 can respectively drive the positioning blocks 19 at the output end to move, and the two positioning blocks 19 drive the soft rail 18 on the top to move synchronously to the other side, at this time, the soft rail 18 can connect the support rail 11 and the arc-shaped rail 39, and close the support rail 11, at this time, the electric trolley 12 can enter the arc-shaped rail 39 along the soft slide rail, at this time, the arc-shaped surface of the assembled concrete precast panel can be trimmed by the grinding wheel 16.

[0027] like Figure 1-9As shown, preferably, the lower surface of the mounting frame 2 is rotatably connected to the first rotating rod 22, the rotating sleeve 23 and the second rotating rod 24 through a bearing, the rotating sleeve 23 is sleeved on the outer surface of the first rotating rod 22, the surfaces of the first rotating rod 22 and the rotating sleeve 23 are both rotatably connected to the two first gears 25 through a bearing, the surface of the second rotating rod 24 is fixedly connected to the two second gears 26, the inner surfaces of the two first gears 25 are both provided with pawls, the surfaces of the two first rotating rods 22 are fixedly connected to ratchets, the ratchets are meshed with the pawls, the surface of the reciprocating screw rod 7 is fixedly connected to two fourth gears 27, the two first gears 25 are both meshed with the fourth gear 27, the outer surfaces of the first rotating rod 22 are respectively connected to the adjacent second rotating rods 24 through a synchronous belt drive, the upper surface of the electric cart 12 is rotatably connected to the third rotating rod 28 through a bearing, and the surface of the third rotating rod 28 is fixedly connected to the third gear 29.

[0028] The effect is that when the next edge is about to be polished, the electric trolley 12 drives the third rotating rod 28 on the top to rotate, and the third rotating rod 28 drives the third gear 29 on the top to rotate, and the third gear 29 contacts the second gear 26 at the corner, and the second gear 26 drives the second rotating rod 24 to rotate, and the second rotating rod 24 drives the next first rotating rod 22 to rotate through the synchronous belt, and the first rotating rod 22 drives the bottom first gear 25 to rotate through the ratchet and the pawl, and the bottom first gear 25 drives the bottom fourth gear 27 to rotate, and the fourth gear 27 drives the reciprocating screw rod 7 to rotate, and the reciprocating screw rod 7 drives the supporting lifting frame 8 to move upward, and the supporting lifting frame 8 drives the connecting frame 9 to move upward, and the connecting frame 9 drives the clamping positioning column 10 to move upward, so that the clamping positioning column 10 leaves the assembled concrete precast panel. At this time, the electric trolley 12 can continue to trim the next edge without driving the rotating rod to rotate, and can clamp the assembled concrete precast panel during polishing, and will not hinder the polishing, thereby improving work efficiency.

[0029] like Figure 1-9 As shown, a dust cover 30 is fixedly connected to the lower surface of the sliding frame 14, a through hole is provided on the lower surface of the dust cover 30, a filter fan 31 is installed on the surface of the dust cover 30, a limiting frame 33 is fixedly connected to the lower surface of the sliding plate 6, the limiting frame 33 is slidably connected to the connecting frame 9, a conveyor 34 is installed on the surface of the frame 1, a dust box 32 is fixedly connected to the outer surface of the frame 1, a second motor 37 is installed on the upper surface of the mounting frame 2, the output end of the second motor 37 is fixedly connected to the threaded rod 3, the reciprocating screw rod 7 is rotatably connected to the mounting frame 2 through a bearing, a limiting groove is provided on the surface of the mounting frame 2, a limiting block 38 is fixedly connected to the lower surface of the sliding plate 6, and the limiting block 38 is slidably connected to the limiting groove.

[0030] The effect is that during the movement of the electric trolley 12, the sliding frame 14 drives the dust cover 30 at the bottom to move and starts the filter fan 31. The filter fan 31 can suck the debris generated during grinding into the dust cover 30. The filter fan 31 is provided with a filter net. At this time, the debris can fall from the through hole at the bottom into the dust box 32.

[0031] Working principle: the assembled concrete precast panel is placed on the conveyor 34 for transportation, and after the assembled concrete precast panel is transported between the clamping and positioning columns 10, the second motor 37 drives the threaded rod 3 to rotate, the threaded rod 3 drives the threaded lifting frame 4 to move upward, the threaded lifting frame 4 drives the push rod 5 to rotate, and the other ends of the multiple push rods 5 pull the sliding plate 6 together, the sliding plate 6 drives the limit frame 33 to move, the limit frame 33 drives the connecting frame 9 to move, the connecting frame 9 drives the clamping and positioning columns 10 to move, and clamps the assembled concrete precast panel. After clamping, the electric slide rail 13 is started, the electric slide rail 13 drives the sliding frame 14 to approach the assembled concrete precast panel, the sliding frame 14 drives the motor to move, and the first motor 15 drives the grinding wheel 1 fixed at the output end 6 is close to the assembled concrete precast panel, the first motor 15 is started, the first motor 15 drives the grinding wheel 16 to grind the assembled concrete precast panel, the electric trolley 12 is started, and the electric trolley 12 slides counterclockwise along the support track 11. At this time, the edge of the assembled concrete precast panel can be grinded. When the assembled concrete precast panel has an arc edge, the positioning blocks 19 at the output end can be driven to move by the two cylinders 21 respectively, and the two positioning blocks 19 drive the top soft track 18 to move to the other side synchronously. At this time, the soft track 18 can connect the support track 11 and the arc track 39, and close the support track 11. At this time, the electric trolley 12 can enter the arc track 39 along the soft slide rail. At this time, the grinding wheel 16 can be used to grind the edge of the assembled concrete precast panel. The arc surface of the assembled concrete precast panel is trimmed. When the next edge is about to be polished, the electric trolley 12 drives the third rotating rod 28 at the top to rotate, and the third rotating rod 28 drives the third gear 29 at the top to rotate. The third gear 29 contacts the second gear 26 at the corner, and the second gear 26 drives the second rotating rod 24 to rotate. The second rotating rod 24 drives the next first rotating rod 22 to rotate through the synchronous belt. The first rotating rod 22 drives the bottom first gear 25 to rotate through the ratchet and the pawl. The bottom first gear 25 drives the bottom fourth gear 27 to rotate. The fourth gear 27 drives the reciprocating screw rod 7 to rotate. The reciprocating screw rod 7 drives the supporting lifting frame 8 to move upward. The supporting lifting frame 8 drives the connecting frame 9 to move upward. The connecting frame 9 drives the clamping fixed The positioning column 10 moves upward, so that the clamping positioning column 10 leaves the assembled concrete precast panel. At this time, the electric trolley 12 can continue to trim the next edge. During the rotation of the reciprocating screw 7, the reciprocating screw 7 drives the fourth gear 27 at the top to rotate, and the fourth gear 27 at the top rotates. A pawl is arranged inside the fourth gear 27 at the top. At this time, the pawl cannot drive the ratchet to rotate, so it will not drive the rotating sleeve arranged inside the ratchet to rotate. When the electric trolley 12 moves to the next corner, the third gear 29 drives the second gear 26 to rotate, and the second gear 26 drives the previous rotating sleeve to rotate synchronously. The rotating sleeve drives the top first gear 25 to rotate through the ratchet and the pawl, and the top first gear 25 drives the top fourth gear 27 to rotate.The fourth gear 27 drives the previous reciprocating screw rod 7 to rotate. At this time, the reciprocating screw rod 7 drives the supporting lifting frame 8 to move downward, and drives the clamping positioning column 10 to continue to position the assembled concrete precast panel. During the descent of the assembled concrete precast panel, the reciprocating screw rod 7 rotates. At this time, the fourth gear 27 at the bottom rotates. The fourth gear 27 at the bottom drives the first gear 25 at the bottom to rotate. A pawl ratchet is provided inside the first gear 25. At this time, the pawl cannot drive the ratchet to rotate, thereby not driving the rotating rod to rotate. During the movement of the electric trolley 12, the sliding frame 14 drives the dust cover 30 at the bottom to move and starts the filter fan 31. The filter fan 31 can suck the debris generated during grinding into the dust cover 30. The filter fan 31 is provided with a filter net. At this time, the debris can fall from the through hole at the bottom to the dust collecting box. In 32, when trimming, the starting point of the electric cart 12 is at the initial position of line 4 just after point C. At this time, the clamping and positioning column 10 at position 4 is at the top. The prefabricated concrete panel enters the bottom of the support track 11 through the conveyor 34 and contacts the clamping and positioning column 10 at position 1, and then clamps the prefabricated concrete panel. At this time, the clamping and positioning columns 10 at line positions 2 and 3 clamp the prefabricated concrete panel, and the prefabricated concrete panel at line position 1 is pushed to the clamping center, and the electric cart 12 is started to trim the prefabricated concrete panel. After the electric cart 12 passes through 4, 3, 1, 2, 4 and 3 in sequence, it lifts the clamping and positioning column 10 at line position 1 upward after passing point B. At this time, the prefabricated concrete panel after trimming is transported out of the device through the conveyor 34.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An automatic trimming machine for precast bridge concrete after forming, comprising a frame (1), characterized in that: The upper surface of the frame (1) is fixedly connected to a mounting frame (2); the surface of the mounting frame (2) is rotatably connected to a threaded rod (3) via a bearing; the surface of the threaded rod (3) is threadedly connected to a threaded lifting frame (4); the surface of the threaded lifting frame (4) is rotatably connected to a push rod (5) via a rotating shaft; the surface of the mounting frame (2) is slidably connected to a sliding plate (6); the push rod (5) and the sliding plate (6) are rotatably connected via a rotating shaft; the surface of the sliding plate (6) is rotatably connected to a reciprocating screw rod (7) via a bearing; the outer surface of the reciprocating screw rod (7) is threadedly connected to a supporting lifting frame (8); the lower surface of the supporting lifting frame (8) is fixedly connected to a connecting frame (9); the surface of the connecting frame (9) is fixedly connected to a clamping positioning column (10).

2. The automatic trimming machine for precast bridge concrete after forming according to claim 1 is characterized by: The surface of the mounting frame (2) is provided with a support rail (11) and an arc-shaped rail (39); the surfaces of the support rail (11) and the arc-shaped rail (39) are slidably connected to an electric trolley (12); the bottom of the electric trolley (12) is provided with an electric slide rail (13); the surface of the electric slide rail (13) is slidably connected to a sliding frame (14); the lower surface of the sliding frame (14) is fixedly connected to a first motor (15); and the output end of the first motor (15) is fixedly connected to a grinding wheel (16).

3. The automatic trimming machine for precast bridge concrete after forming according to claim 2 is characterized in that: The upper surface of the mounting frame (2) is fixedly connected to a positioning rail (17), the surface of the positioning rail (17) is provided with a soft rail (18), the lower surface of the soft rail (18) is rotatably connected to a positioning block (19) via a bearing, the outer surface of the support rail (11) is fixedly connected to a positioning plate (20), the surface of the positioning plate (20) is mounted with a cylinder (21), and the output end of the cylinder (21) is fixedly connected to the positioning block (19).

4. The automatic trimming machine for precast bridge concrete after forming according to claim 2 is characterized in that: The lower surface of the mounting frame (2) is rotatably connected to a first rotating rod (22), a rotating sleeve (23) and a second rotating rod (24) via a bearing. The rotating sleeve (23) is sleeved on the outer surface of the first rotating rod (22). The surfaces of the first rotating rod (22) and the rotating sleeve (23) are both rotatably connected to two first gears (25) via a bearing. The surface of the second rotating rod (24) is fixedly connected to two second gears (26). The inner surfaces of the two first gears (25) are both provided with pawls. The surfaces of the two first rotating rods (22) are fixedly connected to ratchets, which are meshed with the pawls. The surface of the reciprocating screw rod (7) is fixedly connected to two fourth gears (27). The two first gears (25) are meshed with the fourth gears (27). The outer surfaces of the first rotating rod (22) are respectively connected to adjacent second rotating rods (24) via a synchronous belt transmission. The upper surface of the electric cart (12) is rotatably connected to a third rotating rod (28) via a bearing. The surface of the third rotating rod (28) is fixedly connected to a third gear (29).

5. The automatic trimming machine for precast bridge concrete after forming according to claim 2 is characterized by: A dust cover (30) is fixedly connected to the lower surface of the sliding frame (14); a through hole is provided on the lower surface of the dust cover (30); and a filter fan (31) is installed on the surface of the dust cover (30).

6. The automatic trimming machine for precast bridge concrete after forming according to claim 2 is characterized by: A dust cover (30) is fixedly connected to the lower surface of the sliding frame (14); a through hole is provided on the lower surface of the dust cover (30); and a filter fan (31) is installed on the surface of the dust cover (30).

7. The automatic trimming machine for precast bridge concrete after forming according to claim 1 is characterized by: A conveyor (34) is installed on the surface of the frame (1), and a dust collection box (32) is fixedly connected to the outer surface of the frame (1).

8. The automatic trimming machine for precast bridge concrete after forming according to claim 1 is characterized in that: A second motor (37) is mounted on the upper surface of the mounting frame (2), and an output end of the second motor (37) is fixedly connected to the threaded rod (3).

9. The automatic trimming machine for precast bridge concrete after forming according to claim 1, characterized in that: The reciprocating screw rod (7) is rotatably connected to the mounting frame (2) via a bearing.

10. The automatic trimming machine for precast bridge concrete after forming according to claim 1, characterized in that: A limiting groove is provided on the surface of the mounting frame (2), a limiting block (38) is fixedly connected to the lower surface of the sliding plate (6), and the limiting block (38) is slidably connected to the limiting groove.

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