Round pipe fitting marker

Abstract

The utility model discloses a circular pipe fitting marker, which belongs to the technical field of building construction, and adopts the technical scheme that the circular pipe fitting marker is characterized by comprising a rectangular frame, a mounting hole for a pen is formed in the center of a top plate of the rectangular frame, upper guide wheels are symmetrically arranged on the top plate and positioned on two sides of the pen, and the upper guide wheels are arranged on the top plate. Downward guide rods are fixedly arranged at the two ends of the top plate; the device further comprises a movable plate, the guide rods are sleeved with the two ends of the movable plate, the movable plate and the top plate are connected through springs, the guide rods are sleeved with the springs, lower guide wheels are symmetrically arranged on the movable plate, and limiting plates for preventing the movable plate from being separated from the guide rods are fixedly arranged at the lower ends of the guide rods. A plurality of bolt mounting holes are reserved in a bottom plate of the rectangular frame, and a gap is reserved between the movable plate and the bottom plate. The circular pipe fitting marker has the beneficial effect that the circular pipe fitting marker is provided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of building construction, especially relates to a circular pipe marking device. BACKGROUND

[0002] In the building construction process, need according to construction demand, cutting to circular pipe, such as steel pipe, PVC pipe etc.. When cutting pipe, need to measure the required pipe section by tape, after measuring, mark by pencil or marker pen, and the staff cuts according to the mark. Since the surface of the circular pipe is curved, the line is easy to bend when the staff marks. The bending of the line causes a certain deviation in the measured length or leads to uneven cutting area. INNOVATION CONTENT

[0003] The utility model discloses a circular pipe marking device.

[0004] The utility model is realized through the following measures: a circular pipe marking device, characterized by including rectangular frame, the top plate central position of rectangular frame is provided with the mounting hole of pen, the top plate and located pen's both sides symmetry is provided with upper guide pulley, the both ends of top plate are fixedly provided with downward guide rod;

[0005] Still include movable plate, the both ends of movable plate are sleeved on guide rod, and the movable plate is connected between the top plate through spring, and the spring is sleeved on the guide rod, and the movable plate is symmetrically provided with lower guide pulley, and the lower end of guide rod is fixedly provided with the limiting plate for preventing movable plate from separating from guide rod;

[0006] The bottom plate of rectangular frame is reserved with the mounting hole of several bolts, and the movable plate and the bottom plate have spacing.

[0007] The both sides of upper guide pulley are symmetrically provided with L-shaped plate, and the upper guide pulley is rotatably arranged on the vertical plate of L-shaped plate;

[0008] The lower end surface of top plate and located the horizontal plate outside L-shaped plate is fixedly provided with L-shaped baffle, the horizontal plate is slidably arranged between two L-shaped baffles, and the horizontal portion of L-shaped baffle is below the horizontal plate and is provided with a plurality of threaded holes along the sliding direction of horizontal plate;

[0009] Still include the screw that cooperates with threaded hole, and the screw can be on horizontal plate.

[0010] The sleeve concentric with the mounting hole of pen is fixedly arranged on the bottom plate, the screw rod is arranged through the threaded connection on the side wall of sleeve, and the inner end of screw rod can be on the outer wall of pen.

[0011] A downward-facing upright plate is fixedly mounted on the movable plate, and a foot pedal is fixedly mounted on the outer side of the upright plate. Since multiple measurements may be required when marking pipe sections, workers would need to hold the pipe in one hand and the measuring tape in the other. To facilitate multiple measurements of the pipe when marking lines with this marker, the foot pedal can be used to move the movable plate.

[0012] The two lower guide wheels are rotatably mounted on the same bracket. A plurality of studs are symmetrically arranged on the mounting plate of the bracket. The studs are fixed to the lower end face of the mounting plate, with their lower ends extending beyond the movable plate and connected by nuts. Alternatively, the lower guide wheels can be pre-rotated onto an L-shaped plate, which is then fixed to the mounting plate.

[0013] The upright plate is fixedly connected to the mounting plate.

[0014] The movable plate is a U-shaped plate, and an ear plate is fixedly provided on the outer side of the open end of the U-shaped plate. The ear plate is sleeved on the guide rod, and the connection of the U-shaped plate can be transitioned by an arc.

[0015] The rectangular frame also includes side plates connecting the two ends of the bottom plate and the top plate, and ribs are provided at the connection between the side plates and the bottom plate.

[0016] The connection between the upright plate and the foot pedal is fixed by an inclined plate. Two upright plates and two foot pedals can be provided and symmetrically arranged on both sides of the movable plate.

[0017] Instructions for use: Fix the rectangular frame to the ground, usually with expansion bolts. Measure the required pipe section with a tape measure, mark the points beforehand with a pen, step on the foot pedal, the spring is stretched, the movable plate moves downwards, increasing the distance between the upper and lower guide wheels. Release the foot pedal, the spring returns to its original position, and all four guide wheels are tangent to the outer wall of the pipe. Align the pre-comparison points with the pen, then rotate the pipe one full circle. The pen will then draw a line along the outer edge of the pipe until a complete circle is formed.

[0018] In addition, the distance between the two upper guide rollers can be pre-adjusted by adjusting the outer diameter of the pipe fitting, making it more stable for workers to manually rotate the pipe fitting.

[0019] The beneficial effect of the technical solution provided by this utility model embodiment is that it can assist workers in marking circular pipes and minimize the bending of the marking lines. Attached Figure Description

[0020] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings listed below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 Is with Figure 1 Schematic diagrams of the overall structure from different angles;

[0023] Figure 3 This is a reference diagram showing the usage state of an embodiment of this utility model;

[0024] Figure 4 yes Figure 3 The front view.

[0025] The components represented by each number in the attached diagram are listed below: 1. Rectangular frame; 2. Upper guide wheel; 3. Lower guide wheel; 4. Pen; 5. Guide rod; 6. Spring; 7. Vertical plate; 8. Movable plate; 9. L-shaped baffle; 10. Pipe fitting; 101. Top plate; 102. Bottom plate; 103. Side plate; 104. Rib plate; 201. L-shaped plate; 301. Mounting plate; 401. Sleeve; 402. Screw; 501. Limiting plate; 701. Foot pedal; 702. Inclined plate; 801. Ear plate; 901. Horizontal section. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. Of course, the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0027] See Figures 1-4 A circular pipe marking device, characterized in that it includes a rectangular frame 1, a pen 4 mounting hole is provided at the center of the top plate 101 of the rectangular frame 1, upper guide wheels 2 are symmetrically arranged on the top plate 101 and on both sides of the pen 4, and downward guide rods 5 are fixedly arranged at both ends of the top plate 101.

[0028] It also includes a movable plate 8, with both ends of the movable plate 8 sleeved on the guide rod 5. The movable plate 8 and the top plate 101 are connected by a spring 6, which is sleeved on the guide rod 5. Lower guide wheels 3 are symmetrically arranged on the movable plate 8. A limiting plate 501 is fixedly provided at the lower end of the guide rod 5 to prevent the movable plate 8 from detaching from the guide rod 5.

[0029] The base plate 102 of the rectangular frame 1 has several bolt mounting holes, and there is a gap between the movable plate 8 and the base plate 102.

[0030] The upper guide wheel 2 is symmetrically provided with L-shaped plates on both sides, and the upper guide wheel 2 is rotatably mounted on the vertical plate of the L-shaped plate;

[0031] An L-shaped baffle 9 is fixedly installed on the lower end face of the top plate 101 and on the outer side of the horizontal plate of the L-shaped plate. The horizontal plate is slidably installed between the two L-shaped baffles 9. The horizontal part 901 of the L-shaped baffle 9 is located below the horizontal plate and has several threaded holes along the sliding direction of the horizontal plate.

[0032] It also includes screws that mate with threaded holes, which can be pressed against a horizontal plate.

[0033] A sleeve 401 concentric with the mounting hole of the pen 4 is fixedly installed on the base plate 102. A screw 402 is threaded through the side wall of the sleeve 401, and the inner end of the screw 402 can press against the outer wall of the pen 4.

[0034] A downward-facing upright plate 7 is fixedly mounted on the movable plate 8, and a foot pedal 701 is fixedly mounted on the outer side of the upright plate 7. Since multiple measurements with a measuring tape may be required during pipe section marking, workers would need to hold the pipe fitting 10 in one hand and the measuring tape in the other. To facilitate multiple measurements of the pipe fitting 10 when marking lines with this marker, the foot pedal 701 can be used to move the movable plate 8.

[0035] Two lower guide wheels 3 are rotatably mounted on the same bracket. Several studs are symmetrically arranged on the mounting plate 301 of the bracket. The studs are fixed to the lower end face of the mounting plate 301 and extend out of the movable plate 8, with the extended end connected by a nut. The lower guide wheels 3 can also be pre-rotated on an L-shaped plate, and the L-shaped plate can be fixed on the mounting plate 301.

[0036] The upright plate 7 is fixedly connected to the mounting plate 301.

[0037] The movable plate 8 is a U-shaped plate. An ear plate 801 is fixedly installed on the outer side of the open end of the U-shaped plate. The ear plate 801 is sleeved on the guide rod 5. The connection of the U-shaped plate can be transitioned by an arc.

[0038] The rectangular frame 1 also includes side plates 103 connecting the two ends of the bottom plate 102 and the top plate 101, and ribs 104 are provided at the connection between the side plates 103 and the bottom plate 102.

[0039] The connection between the upright plate 7 and the foot pedal 701 is fixedly connected by the inclined plate 702. Two upright plates 7 and two foot pedals 701 can be provided and symmetrically arranged on both sides of the movable plate 8.

[0040] Instructions for use: Fix the rectangular frame 1 to the ground, usually with expansion bolts. Measure the required pipe section with a tape measure and mark the points beforehand with pen 4. Step on foot pedal 701, stretching spring 6 and moving the movable plate 8 downwards, increasing the distance between the upper guide wheel 2 and the lower guide wheel 3. Release foot pedal 701, at which point spring 6 returns to its original position, and all four guide wheels are tangent to the outer wall of pipe 10. Align the pre-comparison points with pen 4, then rotate pipe 10 one full turn. Pen 4 will then draw lines along the outer perimeter of pipe 10 until a complete circle is formed.

[0041] In addition, the distance between the two upper guide wheels 2 can be pre-adjusted by adjusting the outer diameter of the pipe fitting 10, making it more stable when the operator manually rotates the pipe fitting 10.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circular pipe fitting marker, characterized in that, The device includes a rectangular frame, with a pen mounting hole at the center of the top plate of the rectangular frame, upper guide wheels symmetrically arranged on the top plate on both sides of the pen, and downward guide rods fixed at both ends of the top plate. It also includes a movable plate, the two ends of which are sleeved on the guide rod. The movable plate and the top plate are connected by a spring, which is sleeved on the guide rod. Lower guide wheels are symmetrically arranged on the movable plate. A limiting plate is fixedly provided at the lower end of the guide rod to prevent the movable plate from detaching from the guide rod. The base plate of the rectangular frame has several bolt mounting holes, and there is a gap between the movable plate and the base plate.

2. The circular pipe marking device according to claim 1, characterized in that, The upper guide wheel is symmetrically provided with L-shaped plates on both sides, and the upper guide wheel is rotatably mounted on the vertical plate of the L-shaped plate; An L-shaped baffle is fixedly provided on the lower end face of the top plate and outside the horizontal plate of the L-shaped plate. The horizontal plate is slidably disposed between the two L-shaped baffles. The horizontal part of the L-shaped baffle is located below the horizontal plate and has a plurality of threaded holes along the sliding direction of the horizontal plate. It also includes screws that mate with threaded holes, the screws being able to press against the horizontal plate.

3. The circular pipe marking device according to claim 1, characterized in that, A sleeve concentric with the pen's mounting hole is fixedly installed on the base plate. A screw rod is threaded through the side wall of the sleeve, and the inner end of the screw rod can press against the outer wall of the pen.

4. The circular pipe marking device according to claim 1, characterized in that, A downward-facing upright plate is fixedly installed on the movable plate, and a foot pedal is fixedly installed on the outer side of the upright plate.

5. The circular pipe marking device according to claim 1, characterized in that, The two lower guide wheels are rotatably mounted on the same bracket. Several studs are symmetrically arranged on the mounting plate of the bracket. The studs are fixed to the lower end surface of the mounting plate and extend out of the movable plate, with the extended end connected by a nut.

6. The circular pipe marking device according to claim 4, characterized in that, The upright plate is fixedly connected to the mounting plate.

7. The circular pipe marking device according to claim 1, characterized in that, The movable plate is a U-shaped plate, and an ear plate is fixedly provided on the outer side of the open end of the U-shaped plate. The ear plate is sleeved on the guide rod.

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