A reinforced concrete pipe cutting device

Abstract

A reinforced concrete pipeline cutting device, including door-shaped support, square steel pole, motor A and circular saw blade, the two uprights of door-shaped support are connected with horizontal shaft, the shaft sleeve support is rotatably sleeved on the horizontal shaft, the square steel pole is fixedly connected with the shaft sleeve support, the motor A is fixedly installed on one end of the square steel pole, the middle part of the square steel pole is provided with rotating support, the circular saw blade is connected with rotating support through wheel shaft, the outer end of wheel shaft is connected with driven pulley, the output end of motor A is connected with driving pulley, and the driving pulley and driven pulley are connected with belt; One side of door-shaped support is provided with roller mechanism, roller mechanism includes two bases arranged side by side and provided with spacing, both ends of base are provided with bearing with seat, and roller is connected between two bearing with seat; The cutting device avoids the defects of low precision of manual water saw cutting, guarantees the flatness of pipeline cutting end face, has high cutting safety, and can efficiently complete the cutting operation of concrete pipeline.

Description

Technical Field

[0001] This utility model relates to the field of construction tools, and in particular to a reinforced concrete pipe cutting device. Background Technology

[0002] Reinforced concrete pipes possess high rigidity and strength, enabling them to withstand significant external loads, such as soil pressure and ground vehicle loads. This allows reinforced concrete pipes to maintain their shape and structural integrity when buried underground, making them less prone to deformation or breakage.

[0003] Reinforced concrete pipes are widely used in urban sewage pipe networks. They can withstand the pressure and corrosion of sewage, collecting and transporting domestic sewage and industrial wastewater from various urban areas to sewage treatment plants for treatment. They are also used for urban rainwater collection and discharge, quickly draining surface rainwater into rivers, lakes, or other rainwater collection bodies to prevent urban flooding. Furthermore, in agricultural irrigation systems, reinforced concrete pipes can be used to transport irrigation water, drawing water from reservoirs and rivers to farmland to provide sufficient moisture for crops.

[0004] When laying reinforced concrete pipes, they need to be cut to meet length requirements and connection requirements. Currently, construction workers usually use handheld water saws for cutting. The cutting process is time-consuming and labor-intensive, and manual control cannot guarantee the flatness of the cut end, affecting the cutting quality. This needs to be improved. Utility Model Content

[0005] To address the aforementioned problems, this utility model proposes a reinforced concrete pipe cutting device.

[0006] The technical solution of this utility model is as follows: a reinforced concrete pipe cutting device, comprising a portal frame, a square steel rod, a motor, and a circular saw blade. A horizontal shaft is connected between the two columns of the portal frame. This horizontal shaft is a cylindrical optical shaft. A bushing support is rotatably mounted on the horizontal shaft. The bushing support has a threaded hole with a set screw inside. The square steel rod is fixedly connected to the bushing support. The motor is fixedly installed at one end of the square steel rod. A rotating support is provided in the middle of the square steel rod. The circular saw blade is connected to the rotating support through an axle. The lower part of the circular saw blade extends out of the bottom surface of the square steel rod. A driven pulley is connected to the outer end of the axle. A driving pulley is connected to the output end of the motor. Both the driving pulley and the driven pulley are double-grooved pulleys. The size of the driving pulley is slightly larger than that of the driven pulley. A belt connects the driving pulley and the driven pulley. A handle is provided at the other end of the square steel rod.

[0007] Preferably, one side of the gate-shaped bracket is provided with a roller mechanism. The roller mechanism includes two bases arranged side by side with a gap. Both ends of the bases are provided with seated bearings. A roller is connected between the two seated bearings. The roller can rotate between the two seated bearings. The roller shaft of the roller is fitted inside the seated bearing.

[0008] Preferably, one idler roller is provided with a double sprocket and the other idler roller is provided with a single sprocket. A motor B is provided on one side of the end of the idler roller. The motor B is a geared motor. A drive sprocket is provided on the output shaft of the motor B. A first chain is provided between the drive sprocket and the double sprocket. A second chain is provided between the double sprocket and the single sprocket. The length of the second chain is greater than the length of the first chain.

[0009] Preferably, both ends of the horizontal shaft are provided with sliding sleeves, and the two sliding sleeves are slidably connected to the two columns respectively. The columns are square cylindrical columns, and the sliding sleeves are square cylindrical sleeves. The sliding sleeves are provided with threaded holes corresponding to the side of the columns. Set screws are connected in the threaded holes, and nut seats matching their size are provided at the outer end of the threaded holes.

[0010] Preferably, the upper part of the circular saw blade is provided with a semi-circular shell-shaped protective cover, which is fixedly connected to the square steel rod and covers about half of the area of ​​the circular saw blade.

[0011] Preferably, the bottom of the gate-shaped bracket is provided with a square frame base, and diagonal bracing rods are provided on both sides of the square frame base and between the two columns of the gate-shaped bracket, and a cross-shaped reinforcing bracket is provided between the lower ends of the two columns.

[0012] Preferably, the upper part of the gate-shaped bracket is provided with a water tank, and a water pipe is connected to the water tank, with the outer end of the water pipe facing the cutting part of the circular saw blade.

[0013] The beneficial technical effects of this utility model are as follows: the cutting device uses two rollers of the roller mechanism to hold the concrete pipe and drive it to rotate, and a circular saw cutting mechanism with lever lifting is set above the roller mechanism. When the concrete pipe is held and rotated, the circular saw cutting mechanism can cut it radially by pressing down, which avoids the defects of low precision of manual hand-held water saw cutting, ensures the flatness of the pipe cutting end face, has high cutting safety, and can complete the cutting operation of concrete pipes with high efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4yes Figure 3 A schematic diagram of the AA-direction cross-section structure;

[0018] Figure 5 This is a three-dimensional structural diagram of a partial component of this utility model.

[0019] In the diagram, 11. Column, 12. Square frame base, 13. Diagonal brace, 21. Square steel rod, 211. Handle, 22. Motor A, 221. Drive pulley, 23. Circular saw blade, 231. Protective cover, 24. Horizontal shaft, 25. Bushing support, 26. Driven pulley, 27. Belt, 31. Base, 32. Bearing with seat, 33. Roller, 34. Double sprocket, 35. Single sprocket, 36. Motor B, 361. Drive sprocket, 37. First chain, 38. Second chain, 41. Sliding sleeve, 42. Set screw. Detailed Implementation

[0020] Example 1, see appendix Figure 1-5 A reinforced concrete pipe cutting device includes a portal frame, a square steel rod 21, a motor A 22, and a circular saw blade 23. A horizontal shaft 24 is connected between the two uprights 11 of the portal frame. A bushing support 25 is rotatably mounted on the horizontal shaft. The square steel rod 21 is fixedly connected to the bushing support 25, forming a lever connection structure between the square steel rod 21 and the horizontal shaft 24. The motor A 22 is fixedly installed at one end of the square steel rod 21. A rotating support is provided in the middle of the square steel rod 21. The circular saw blade 23 is connected to the rotating support through an axle. The weight of the motor A 22 rests on the end of the square steel rod 21. The lower part generates downward pressure, which in its natural state causes the circular saw blade 23 at the other end of the square steel rod 21 to be in a raised state. The outer end of the wheel axle is connected to the driven pulley 26, and the output end of the motor A 22 is connected to the driving pulley 221. A belt 27 is connected between the driving pulley and the driven pulley. The motor A transmits power to the circular saw blade through the belt, driving it to rotate at high speed for cutting. The other end of the square steel rod 21 is provided with a handle 211, which is connected to a pull rope. When cutting pipes with a larger diameter, the other end of the square steel rod 21 is raised higher, and the square steel rod is pressed down by the pull rope for cutting.

[0021] Both ends of the horizontal shaft 24 are provided with sliding sleeves 41, which are slidably connected to the two columns 11 respectively. The sliding sleeves are provided with threaded holes corresponding to the sides of the columns, and set screws 42 are connected in the threaded holes. The horizontal shaft 24 can be adjusted in height between the two columns 11 through the sliding sleeves 41, thereby adjusting the height of the square steel rod 21 and the circular saw blade 23, so that it can adapt to the cutting operation of reinforced concrete pipes of various sizes.

[0022] The upper part of the circular saw blade 23 is provided with a semi-circular shell-shaped protective cover 231. The protective cover prevents the reinforced concrete debris generated during cutting from flying everywhere, ensuring the safety of the construction site. The protective cover 231 is fixedly connected to the square steel rod 21.

[0023] The bottom of the portal-shaped bracket is provided with a square frame seat 12. Diagonal bracing rods 13 are provided on both sides of the square frame seat and between the two uprights 11 of the portal-shaped bracket. The square frame seat 12 supports the portal-shaped bracket, making it in a stable vertical support state.

[0024] A water tank is installed on the upper part of the gate-shaped bracket, and a water pipe is connected to the water tank. The outer end of the water pipe is facing the cutting part of the circular saw blade 23. During the cutting process, water is continuously sprayed onto the circular saw blade through the water pipe to cool it down, so as to prevent the circular saw blade 23 from cracking due to high temperature and ensure its service life.

[0025] Example 2, see appendix Figure 1 , 3 -4. This embodiment is basically the same as the first embodiment. The similarities will not be repeated. The difference is that: a roller 33 mechanism is provided on one side of the gate-shaped bracket. The roller 33 mechanism includes two bases 31 arranged side by side with a gap. Both ends of the bases are provided with seated bearings 32. A roller 33 is connected between the two seated bearings 32. A certain gap is provided between the two rollers for the pipe to be placed between the two rollers 33.

[0026] One idler roller 33 is equipped with a double sprocket 34, and the other idler roller 33 is equipped with a single sprocket 35. A motor B 36 is located on one side of the end of the idler roller 33. A drive sprocket 361 is located on the output shaft of the motor B. A first chain 37 is provided between the drive sprocket and the double sprocket 34, and a second chain 38 is provided between the double sprocket 34 and the single sprocket 35. The motor B 36 drives the first chain 37 to rotate through the drive sprocket 361. The first chain drives the double sprocket to rotate. The double sprocket drives one idler roller 33 to rotate. At the same time, the double sprocket 34 drives the other idler roller 33 to rotate through the second chain 38. The two idler rollers 33 rotate synchronously.

[0027] When using the reinforced concrete pipe cutting device of this embodiment, the pipe is placed between two rollers 33, and the motor B 36 is started to drive the two rollers 33 to rotate synchronously. The rollers drive the pipe to rotate through friction. Then, the operator pulls down the square steel rod 21 through the handle 211. The motor A 22 at one end of the square steel rod 21 is raised upward, and the circular saw at the other end is lowered to contact the pipe. The motor A 22 drives the circular saw to rotate at high speed through the belt 27 to cut the pipe. This self-rotating cutting method of concrete pipe avoids the defects of low precision of manual hand-held water saw cutting, ensures the flatness of the pipe cutting end face, and has high cutting safety.

Claims

1. A reinforced concrete pipe cutting device, characterized in that: The device includes a U-shaped support frame, a square steel rod, a motor, and a circular saw blade. A horizontal shaft connects the two uprights of the U-shaped support frame, and a bushing support is rotatably mounted on the horizontal shaft. The square steel rod is fixedly connected to the bushing support. The motor is fixedly installed at one end of the square steel rod. A rotating support is provided in the middle of the square steel rod. The circular saw blade is connected to the rotating support via an axle. A driven pulley is connected to the outer end of the axle. A driving pulley is connected to the output end of the motor. A belt connects the driving pulley and the driven pulley. A handle is provided at the other end of the square steel rod.

2. The reinforced concrete pipe cutting device according to claim 1, characterized in that: The bracket has a roller mechanism on one side. The roller mechanism includes two bases arranged side by side with a gap. Both ends of the bases are equipped with bearings with seats, and the rollers are connected between the two bearings with seats.

3. The reinforced concrete pipe cutting device according to claim 2, characterized in that: One idler roller is equipped with a double sprocket, and the other idler roller is equipped with a single sprocket. A motor B is located on one side of the end of the idler roller. A drive sprocket is located on the output shaft of motor B. A first chain is provided between the drive sprocket and the double sprocket, and a second chain is provided between the double sprocket and the single sprocket.

4. The reinforced concrete pipe cutting device according to claim 1, characterized in that: Both ends of the horizontal shaft are provided with sliding sleeves, which are slidably connected to the two columns respectively. The sliding sleeves are provided with threaded holes corresponding to the side of the columns, and set screws are connected in the threaded holes.

5. A reinforced concrete pipe cutting device according to claim 1, characterized in that: The upper part of the circular saw blade is provided with a semi-circular shell-shaped protective cover, which is fixedly connected to the square steel rod.

6. A reinforced concrete pipe cutting device according to claim 1, characterized in that: The bottom of the portal-shaped bracket is provided with a square frame base, and diagonal bracing rods are provided on both sides of the square frame base and between the two columns of the portal-shaped bracket.

7. A reinforced concrete pipe cutting device according to claim 1, characterized in that: The upper part of the gate-shaped bracket is equipped with a water tank, and a water pipe is connected to the water tank. The outer end of the water pipe faces the cutting part of the circular saw blade.

Images