Portable circular scriber

Abstract

The utility model discloses a portable circular scriber which comprises a central point positioning unit, a sizing unit and a scribing unit, wherein the sizing unit is rotationally connected with the central point positioning unit; the scribing unit is fixedly connected with the free end of the sizing unit; wherein the central point positioning unit is a positioning pin used for fixing a central point position, and the scribing unit comprises a funnel used for containing scribing dye. The circular marking device can mark a circle with any radius, is convenient to carry, and is suitable for marking and positioning the circle range in the construction process.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and relates to a temporary line marker, specifically a line marker capable of making circular markings at the construction site. Background Art

[0002] Line markers play a major role in building construction, mainly including functions such as planning layout, positioning marking, safety warning, and assisting construction, which can provide convenience and guarantee for the construction process.

[0003] During the construction process, it is usually necessary to make line markings and positionings at multiple construction locations. According to different actual situations and requirements, different shape requirements for the markings are also different.

[0004] Most of the existing line markers are relatively heavy and inconvenient to move around, and usually can only draw straight lines. During the line marking process, the direction of the drawn straight line can only be adjusted by manually adjusting the orientation of the line marker. When it is necessary to locate during the construction process of excavating a circular foundation pit or placing circular equipment, the existing line marker can only make circular markings by manually controlling the movement direction of the line marker. This method not only consumes manpower and has low construction efficiency, but also the circular positioning lines drawn usually have problems such as irregular shapes and offsets, resulting in the inability to achieve an accurate positioning effect. Summary of the Utility Model

[0005] In order to solve the above deficiencies in the prior art, the utility model aims to provide a portable circular line marker to achieve the purpose of being able to make line markings and positionings for circular areas and being convenient to move around.

[0006] To achieve the above purpose, the technical solutions adopted by the utility model are as follows:

[0007] A portable circular line marker includes a center point positioning unit, a diameter determining unit rotatably connected to the center point positioning unit, and a line marking unit fixedly connected to the free end of the diameter determining unit; wherein, the center point positioning unit is a positioning pin for fixing the center point, and the line marking unit includes a funnel for containing line marking dye.

[0008] As a limitation of the utility model, the diameter determining unit includes a multi-section telescopic cross bar and a connecting block fixed at one end of the multi-section telescopic cross bar.

[0009] As a further limitation of the utility model, each rod body of the multi-section telescopic cross bar is engraved with independent scale markings, and the zero point of each scale marking is set at one end close to the line marking unit.

[0010] As a further limitation of the utility model, the connecting block is provided with a cylindrical groove for rotatably connecting with the center point positioning unit in a direction perpendicular to the axis of the multi-section telescopic cross bar.

[0011] As a further limitation of the present utility model, a cylindrical boss adapted to the cylindrical groove on the connection block is fixedly provided at the top end of the positioning pin.

[0012] As another limitation of the present utility model, a control switch for controlling the dye flow rate is fixedly provided inside the funnel.

[0013] As a further limitation of the present utility model, the control switch includes a fixed rod perpendicularly fixed to the inner wall of the funnel along the axis of the funnel and a control rod threadedly connected to the fixed rod. A switch ball for controlling the opening and blocking of the nozzle is fixedly provided at one end of the control rod close to the nozzle.

[0014] Due to the adoption of the above technical solutions, the beneficial effects obtained by the present utility model compared with the prior art are as follows:

[0015] (1) The present utility model designs a device capable of performing circular scribing. During the construction process, scribing and positioning can be carried out as needed before excavating a circular foundation pit or placing circular equipment. Specifically, the present utility model includes a center point positioning unit, a diameter determining unit rotatably connected to the center point positioning unit, and a scribing unit fixedly connected to the diameter determining unit. The center of the circular range is positioned by the center point positioning unit, and then the diameter determining unit is rotated to make the scribing unit perform a circular motion around the determined center. At the same time, the dye contained in the scribing unit spills out during the motion process to complete the circular scribing.

[0016] (2) The diameter determining unit of the present utility model is set as a multi-section telescopic cross bar, and scale marks are engraved on the multi-section telescopic cross bar. By adjusting the length of the multi-section telescopic cross bar and combining the readings of the scale marks, the radius of the scribed circle can be accurately confirmed.

[0017] (3) The diameter determining unit and the center point positioning unit of the present utility model are detachably and rotatably connected by setting a matching cylindrical boss and groove. At the same time, the diameter determining unit is set as a multi-section telescopic rod. After use, the center point positioning unit can be removed, and the multi-section telescopic rod can be retracted, thus completing the storage of the present utility model and facilitating the quick carrying and turnover of the present utility model to the next construction position.

[0018] (4) A control switch is provided on the scribing unit of the present utility model. By adjusting the closing degree between the switch ball and the nozzle in the control switch, the control of the dye flow rate in the scribing unit can be completed, thereby being able to control the start and end timing of the scribing process and the thickness of the scribed line.

[0019] To sum up, the present utility model can perform circular scribing with any radius and is convenient to carry and turnover, and is applicable to scribing and positioning of circular ranges during the construction process. Description of the Drawings

[0020] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 It is a schematic structural diagram of an embodiment of the present utility model;

[0022] Figure 2 It is a schematic assembly relationship diagram of an embodiment of the present utility model;

[0023] Figure 3 It is a schematic structural diagram of a control switch in an embodiment of the present utility model;

[0024] In the figure: 1, center point positioning unit; 2, sizing unit; 3, scribing unit;

[0025] 11, positioning pin; 12, cylindrical boss;

[0026] 21, multi-segment telescopic cross bar; 22, connecting block;

[0027] 31, fixed rod; 32, control rod; 33, switch ball. Specific embodiments

[0028] The following is a description of the preferred embodiments of the present utility model in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present utility model, and are not used to limit the present utility model.

[0029] This embodiment discloses a portable circular wire reel, including a center point positioning unit 1, a sizing unit 2, and a scribing unit 3.

[0030] The center point positioning unit 1 includes a positioning pin 11 for fixing the center point position and a cylindrical boss 12 fixedly arranged on the positioning pin 11 for rotatably connecting with the sizing unit 2. One end of the positioning pin 11 opposite to the end face where the boss is arranged is spiked. When in use, the center point positioning unit 1 is placed vertically, and the spiked end is aligned with the required center point and inserted into the ground to complete the fixation of the center point positioning unit 1.

[0031] The sizing unit 2 includes a multi-section telescopic cross bar 21 and a connecting block 22 fixed at one end of the multi-section telescopic cross bar 21 for rotatably connecting with the center point positioning unit 1. Each section of the rod body on the multi-section telescopic cross bar 21 is engraved with an independent scale mark, and the zero point of each scale mark is set near the scribing unit end. By adjusting the length of the multi-section telescopic cross bar 21 and adding up the readings on each section of the scale mark, the confirmation of the radius length of the scribed circle can be completed; the connecting block 22 is provided with a cylindrical groove in the direction perpendicular to the axis of the multi-section telescopic cross bar 21, and the size of the cylindrical groove matches the size of the cylindrical boss 12 on the positioning pin 11. Inserting the connecting block 22 into the boss provided on the positioning pin 11 through the opened groove can complete the rotational connection between the sizing unit 2 and the center point positioning unit 1.

[0032] The scribing unit 3 includes a funnel for containing the dye required for scribing and for scribing, and a control switch fixed inside the funnel for controlling the dye flow. The funnel is fixed on the sizing unit 2. The control unit includes a fixed rod 31 fixed on the inner wall of the funnel, a control rod 32 threadedly connected to the fixed rod 31, and a switch ball 33 fixed at the end of the control rod 32 near the nozzle. The diameter of the switch ball 33 matches the diameter of the nozzle; during use, add the dye into the funnel, rotate the control rod 32 so that it moves along the thread away from the nozzle direction, thereby driving the switch ball 33 to move away from the nozzle direction. Since a gap is generated when the switch ball 33 leaves the nozzle opening, the dye flows out from the nozzle of the funnel to the ground under the action of gravity, and scribing can start. By controlling the size of the gap between the switch ball 33 and the nozzle opening, the dye flow rate can be changed, thereby being able to change the line width of the scribed positioning line. When it is necessary to stop working, move the switch ball 33 to make it completely closed with the nozzle, and the dye can be stopped from flowing out.

[0033] When using this embodiment, first install the center point positioning unit 1 at the specified position, then install the sizing unit 2 on the center point positioning unit 1, and adjust the length of the sizing unit 2 as needed; after the above steps are completed, put the dye into the scribing unit 3, rotate the sizing unit 2 to make the scribing unit 3 perform a circular motion around the center point positioning unit 1. After scribing is completed, remove and store the sizing unit 2, and it can be carried and transferred to the next working station for scribing.

[0034] It should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A portable circular marking device, characterized in that: It includes a center point positioning unit, a sizing unit rotatably connected to the center point positioning unit, and a marking unit fixedly connected to the free end of the sizing unit; wherein the center point positioning unit is a positioning pin for fixing the center point position, and the marking unit includes a funnel for containing marking dye.

2. A portable circular marking device according to claim 1, characterized in that: The sizing unit comprises a multi-section telescopic cross bar and a connecting block fixedly arranged at one end of the multi-section telescopic cross bar.

3. A portable circular marking device according to claim 2, characterized in that: Each section of the multi-section telescopic crossbar is engraved with an independent scale mark, and the zero point of each scale mark is set close to one end of the marking unit.

4. A portable circular marking device according to claim 2 or 3, characterized in that: The connecting block is provided with a cylindrical groove in a direction perpendicular to the axis of the multi-section telescopic crossbar for rotationally connecting with the center point positioning unit.

5. A portable circular marking device according to claim 4, characterized in that: The top end of the positioning pin is fixedly provided with a cylindrical boss which matches with the cylindrical groove on the connecting block.

6. A portable circular marking tool according to any one of claims 1 to 3 and 5, characterized in that: A control switch for controlling the flow of dye is built into the funnel.

7. A portable circular marking device according to claim 6, characterized in that: The control switch comprises a fixing rod fixed on the inner wall of the funnel perpendicular to the funnel axis and a control rod threadedly connected to the fixing rod. A switch ball for controlling the opening and closing of the funnel is fixed at one end of the control rod close to the funnel.

Images