Fire-fighting pipeline cutting device with combined bracket

Abstract

A fire-fighting pipeline cutting device provided with a combined bracket comprises two L-shaped supports fixed to a support side by side, a first carrier roller assembly and a second carrier roller assembly, a supporting arm is hinged between the upper ends of the two L-shaped supports, a circular saw blade is rotationally installed on one side face of the inner end of the supporting arm, and a motor connected with the circular saw blade is fixedly installed on the other side face of the inner end of the supporting arm; the first carrier roller assembly comprises a first U-shaped groove formed in the middle of a transverse plate body of the L-shaped support and two first carrier rollers. The second carrier roller assembly comprises two supporting plates which are arranged side by side, extending plates are arranged at the ends of the supporting plates and hinged to the outer ends of the transverse plate bodies of the L-shaped supports, second U-shaped grooves are formed in the middles of the supporting plates, second carrier rollers are arranged on the two sides of the port parts of the second U-shaped grooves, and the distance between the two second carrier rollers is smaller than that between the two first carrier rollers; the combined bracket structure can be better matched with fire-fighting pipelines of different sizes, the supporting stability of the combined bracket structure on the fire-fighting pipelines is improved, and the cutting quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of building electromechanical installation tools, and in particular to a fire pipe cutting device equipped with a combined bracket. Background Technology

[0002] Building fire protection piping systems are an important component of building fire protection facilities, primarily used to transport fire-fighting water to control and extinguish fires. Fire protection piping is typically installed after the main building construction is completed. Fire protection piping is manufactured to a fixed length, and during installation, it needs to be cut and adjusted according to the building's structural characteristics to meet installation requirements. Currently, cutting machines are usually used on-site. During cutting, the saw blade needs to be pressed down by hand to apply sufficient pressure to cut the pipe. This method involves continuous work and high labor intensity, affecting cutting efficiency. Furthermore, current cutting machines often have fixed-size brackets to support the pipe, leading to mismatches between different bracket sizes and resulting in poor support stability, affecting cutting quality. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a fire pipe cutting device equipped with a combined bracket.

[0004] The technical solution of this utility model is: a fire pipe cutting device with a combined bracket, including two L-shaped supports fixed side by side on a support, a first roller assembly and a second roller assembly. A support arm is hinged between the upper ends of the two L-shaped supports. The support includes a platform plate and four legs set at the four corners of the platform plate. The middle part of the support arm is a square tube. The outer end of the square tube is provided with a hinged support, and the inner end is provided with a support plate. A circular saw blade is rotatably installed on one side of the inner end of the support arm. A semi-circular shell is fitted on the outer side of the circular saw blade. A motor connected to the circular saw blade is fixedly installed on the other side. The motor is a geared motor to ensure sufficient drive for the circular saw blade. The first idler assembly includes a first U-shaped groove and two first idlers in the middle of the transverse plate of the L-shaped bracket. The two first idlers are rotatably connected to both sides of the port of the first U-shaped groove, and there is a certain distance between the two first idlers. The second idler assembly includes two support plates arranged side by side. The end of the support plate is provided with an extension plate, which is hinged to the outer end of the transverse plate of the L-shaped bracket. A second U-shaped groove is provided in the middle of the support plate. A second idler is provided on both sides of the port of the second U-shaped groove, and there is a certain distance between the two second idlers. The diameters of the first idlers and the second idlers are the same, and the distance between the two second idlers is smaller than the distance between the two first idlers.

[0005] Preferably, a jack is mounted on the surface of the support, a pressing rod is provided on the outside of the jack, the base of the jack is hinged between two L-shaped brackets, and the upper end of the piston rod of the jack is hinged to the outer end of the support arm.

[0006] Preferably, a cross brace is vertically connected to the outer end of the support arm, and a tension spring is connected to the outer end of the cross brace. The tension spring has sufficient tension to pull up the motor and the circular saw blade, and the lower end of the tension spring is fixedly connected to the support surface.

[0007] Preferably, the end of the cross brace is provided with a threaded hole, a screw is connected in the threaded hole, the outer end of the screw extends out of the threaded hole, a fastening bolt is provided in the protruding part, and the outer end of the screw is provided with a hook hole, the upper end of the tension spring is hooked into the hook hole.

[0008] Preferably, a connecting plate is provided between the upper surfaces of the two L-shaped brackets, the start / stop switch of the motor is located in the middle of the connecting plate, and a certain distance is provided between the connecting plate and the support arm.

[0009] Preferably, a reinforcing plate is provided between the two ends of the two support plates, the reinforcing plate is welded and fixed between the two support plates, and a hinged transverse shaft is provided between the hinged parts of the two extension plates.

[0010] The beneficial technical effects of this utility model are:

[0011] (1) The device uses a jack to push the support arm to provide downward cutting force to the circular saw blade. It generates sufficient pressure to quickly cut the pipe. A tension spring is set to provide tension to the support arm so that the circular saw blade can automatically return to its original position after cutting, which effectively improves the cutting efficiency of fire pipes.

[0012] (2) The second roller assembly in the device is in an outward flipped state to expose the first roller assembly below. The first roller assembly can be matched with larger fire pipes. After the second roller assembly flips upward, it is in a supporting state and is used to match smaller fire pipes. This combined bracket structure can better match fire pipes of different sizes, improve its support stability for fire pipes, and help improve cutting quality. Attached Figure Description

[0013] Figure 1 This is one of the three-dimensional structural schematic diagrams of this utility model;

[0014] Figure 2 yes Figure 1 Front view structural diagram;

[0015] Figure 3 This is the second three-dimensional structural schematic diagram of this utility model;

[0016] Figure 4 yes Figure 3Front view structural diagram;

[0017] Figure 5 This is the third three-dimensional structural schematic diagram of this utility model.

[0018] In the diagram, 1. support, 2. L-shaped bracket, 21. first U-shaped groove, 22. first idler roller, 3. support arm, 31. circular saw blade, 32. motor, 4. support plate, 41. second U-shaped groove, 42. second idler roller, 43. reinforcing plate, 5. jack, 51. cross brace, 52. tension spring, 53. screw, 54. mounting hole, 6. start / stop switch. Detailed Implementation

[0019] Example 1, see appendix Figure 1-4 A fire-fighting pipe cutting device with a combined bracket includes two L-shaped supports 2 fixed side-by-side on a support 1, a first roller assembly 22, and a second roller assembly. A support arm 3 is hinged between the upper ends of the two L-shaped supports 2. A circular saw blade 31 is rotatably mounted on one side of the inner end of the support arm 3, and a motor 32 connected to the circular saw blade 31 is fixedly mounted on the other side, driving the circular saw blade to rotate at high speed. The first roller assembly 22 includes a first U-shaped groove 21 located in the middle of the transverse plate of the L-shaped support 2 and two first rollers 22. The two first rollers 22 are rotatably connected to both sides of the port end of the first U-shaped groove 21. The first U-shaped groove is used for cutting... Space is left between the two first rollers to place fire pipes; the second roller assembly includes two support plates 4 arranged side by side, with extension plates at the ends of the support plates. The extension plates are hinged to the outer ends of the transverse plates of the L-shaped bracket 2, so that the second roller assembly forms a hinged flip structure. A second U-shaped groove 41 is provided in the middle of the support plate 4. Second rollers 42 are provided on both sides of the port of the second U-shaped groove 41. The second U-shaped groove 41 is used to leave space between the two second rollers 42 to place fire pipes. The distance between the two second rollers 42 is smaller than the distance between the two first rollers 22. The larger the distance between the rollers, the larger the size of the fire pipes can be supported.

[0020] A connecting plate is provided between the upper surfaces of the two L-shaped brackets 2. The start / stop switch 6 of the motor 32 is located in the middle of the connecting plate. The start / stop switch 6 is located on the connecting plate so that the motor 32 can be started or stopped at any time by pressing it.

[0021] A reinforcing plate 43 is provided between the two ends of the two support plates 4. The two support plates 4 are fixedly connected into one body by the reinforcing plate 43 to form an integrated frame structure. A hinged horizontal shaft is provided between the hinged parts of the two extension plates.

[0022] When using the fire pipe cutting device of this embodiment, if the fire pipe being cut is a large-sized fire pipe, the second idler roller assembly is flipped outwards, exposing the first idler roller assembly 22 below (see Appendix). Figure 3The first roller assembly has a large gap between the two first rollers, which can match larger-sized fire pipes. The fire pipe is then placed between the two first rollers, and the motor 32 is started to drive the circular saw blade 31 to rotate. The support arm 3 is pressed down to press the circular saw blade 31 firmly onto the fire pipe for cutting. If the fire pipe being cut is of a smaller size, the second roller assembly is flipped upwards to a supporting position (see Appendix). Figure 1 Smaller-sized fire pipes are placed between the two first rollers for cutting operations. This combined bracket structure can better match fire pipes of different sizes, improving its support stability for the fire pipes.

[0023] Example 2, see appendix Figure 5 This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that: a jack 5 is installed on the surface of the support 1, and the base of the jack 5 is hinged between the two L-shaped brackets 2. The upper end of the piston rod of the jack 5 is hinged to the outer end of the support arm 3. The hinge structure at both ends of the jack 5 allows it to rotate with the swing of the support arm 3. A cross brace 51 is vertically connected to the side of the outer end of the support arm 3. A tension spring 52 is connected to the outer end of the cross brace 51. The lower end of the tension spring is fixedly connected to the surface of the support 1. The tension spring 52 provides elastic tension to the support arm 3 through the cross brace 51.

[0024] The end of the cross brace 51 is provided with a threaded hole, in which a screw 53 is connected. The outer end of the screw is provided with a hook hole 54. The upper end of the tension spring 52 is hooked into the hook hole 54. By turning the screw 53, its turning depth in the threaded hole can be adjusted, thereby adjusting its hook support length for the tension spring 52. Therefore, the tension of the tension spring 52 can be easily adjusted to ensure its pulling and resetting effect on the support arm 3.

[0025] This embodiment uses a jack 5 to push the support arm 3 to provide downward cutting force to the circular saw blade 31. The resulting pressure is sufficient to quickly cut the pipe. A tension spring 52 is also provided to the support arm 3 to provide tension so that the circular saw blade 31 can automatically return to its original position after cutting, which effectively improves the cutting efficiency of fire-fighting pipes.

Claims

1. A fire hose cutting apparatus provided with a combination carrier, characterized in that: The two L-shaped supports are fixed on the support, the support arm is hinged between the upper ends of the two L-shaped supports, the circular saw blade is rotatably installed on one side of the inner end of the support arm, the motor connected with the circular saw blade is fixedly installed on the other side of the inner end of the support arm; the first roller assembly comprises a first U-shaped groove arranged in the middle of the horizontal plate body of the L-shaped support and two first rollers, the two first rollers are rotatably connected on both sides of the port of the first U-shaped groove; the second roller assembly comprises two support plates arranged side by side, the end of the support plate is provided with an extension plate, the extension plate is hinged with the outer end of the horizontal plate body of the L-shaped support, the middle of the support plate is provided with a second U-shaped groove, the second U-shaped groove is provided with a second roller on both sides of the port, and the distance between the two second rollers is smaller than the distance between the two first rollers.

2. A fire hose cutting apparatus provided with a combination bracket according to claim 1, characterized in that: The surface of the support is provided with a jack, the base of the jack is hinged between the two L-shaped supports, and the upper end of the piston rod of the jack is hinged with the outer end of the support arm.

3. A fire hose cutting apparatus provided with a combination carrier according to claim 2, characterized in that: The outer end of the support arm is vertically connected with a cross brace, the outer end of the cross brace is connected with a tension spring, and the lower end of the tension spring is fixedly connected with the surface of the support.

4. A fire hose cutting apparatus provided with a combination carrier according to claim 3, characterized in that: The end of the cross brace is provided with a threaded hole, the threaded hole is connected with a screw, the outer end of the screw is provided with a hanging hole, and the upper end of the tension spring is hung in the hanging hole.

5. A fire hose cutting apparatus with a combination carrier as defined in claim 1, wherein: The upper end surfaces of the two L-shaped supports are provided with a connecting plate, and the start-stop switch of the motor is arranged in the middle of the connecting plate.

6. A fire hose cutting apparatus with a combination carrier as defined in claim 1, wherein: The two ends of the two support plates are provided with reinforcing plates, and a hinge cross shaft is arranged between the hinge portions of the two extension plates.

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