Extension scale for rapid paying-off in construction site

Abstract

The utility model discloses a rapid pay-off extension scale for a construction site, which belongs to the technical field of construction measuring tools, and comprises two straight rulers which are arranged in parallel, and one end parts of the two straight rulers are rotationally connected; wherein the ruler located at the upper part is defined as a first ruler, and the ruler located at the lower part is defined as a second ruler; the angle adjusting assembly is arranged at the ends of the two straight rulers and used for adjusting and locking the relative angle between the two straight rulers; the number of the measuring tapes is two, the measuring tapes are respectively located at the free ends of the two straight rulers, the ruler strip of each measuring tape is detachably installed on the corresponding straight ruler, and the stretching direction of the ruler strip is consistent with the length direction of the corresponding straight ruler. The ruler is matched with the measuring tape, the measuring tape is stretched in the direction of the ruler for length measurement and marking, and the accuracy of the paying-off angle and length can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of construction surveying tools, and in particular to a telescopic ruler for rapid line setting out on construction sites. Background Technology

[0002] In the field of building construction, accurate layout is crucial for ensuring project quality and schedule. However, with the increasing diversity and complexity of architectural designs, traditional layout tools and methods are gradually revealing their limitations in meeting practical needs.

[0003] In traditional layout processes, length measuring tools (such as tape measures and cross rulers) and angle measuring tools are often independent of each other, making it difficult to ensure precise coordination between them during measurement and marking. For example, when measuring the length of an inclined structure, the lack of an effective angular reference can easily lead to measurement errors, thus affecting the accuracy of the layout. Utility Model Content

[0004] This utility model provides a telescopic ruler for rapid line laying on construction sites to solve the problems in the prior art.

[0005] The present invention adopts the following technical solution: a telescopic ruler for quick line laying on construction sites, comprising: two rulers arranged in parallel, with one end of each ruler rotatably connected; wherein the one located above is defined as the first ruler and the one located below is defined as the second ruler; an angle adjustment component is disposed at the ends of the two rulers for adjusting and locking the relative angle between the two rulers; and two measuring tapes, each located at the free end of the two rulers, wherein the strip of each measuring tape is detachably mounted on the corresponding ruler, and the stretching direction of the measuring tape strip is consistent with the length direction of the corresponding ruler.

[0006] Preferably, the lower end of the first ruler is provided with a mounting hole, and a spring and a retaining ball located at the end of the spring are coaxially mounted in the mounting hole; the upper end of the second ruler is provided with a plurality of positioning holes evenly distributed around its rotation axis; when the two rulers rotate relative to each other, the retaining ball can be pushed by the spring, so that the retaining ball can be at least partially embedded in any positioning hole.

[0007] Preferably, the upper opening of the positioning hole on the second ruler is chamfered.

[0008] Preferably, the lower side of the first ruler end has a rotating part, and the second ruler end has a rotating hole penetrating its body, the rotating part being rotatably connected to the rotating hole.

[0009] Preferably, the angle adjustment assembly includes: a locking member consisting of a stop block and an internally threaded sleeve located at the end of the stop block, wherein the rotating part has a through hole coaxial with it, and the internally threaded sleeve is inserted into the through hole; and a bolt member having a screw and a hand-tightening end located at the end of the screw, wherein the screw is threadedly connected to the internally threaded sleeve, so that the stop block and the hand-tightening end abut against the second ruler and the first ruler respectively, thereby achieving relative locking of the two rulers.

[0010] Preferably, the lower end of the second ruler has a groove so that when the two rulers are locked relative to each other, the stop block is completely located in the groove.

[0011] Preferably, each ruler has a groove extending along its length on its upper surface, a baffle is slidably connected in the groove, a protrusion is provided in the groove, the ruler hook at the end of the ruler strip is hooked on the protrusion, and by sliding the baffle above the protrusion, the ruler strip is limited to the gap between the baffle and the protrusion.

[0012] Preferably, the top of the baffle is configured with a frosted surface.

[0013] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects:

[0014] Firstly, the two rulers are set parallel to each other and connected at one end by a rotatable mechanism. This structure allows the tool to flexibly change shape to adapt to different line-laying angles. An angle adjustment component is located at the end of the rulers, used to adjust and lock the relative angle between the two rulers. This not only allows users to precisely adjust the ruler angle according to the actual line-laying angle requirements, but also locks it after adjustment to the appropriate angle, ensuring that the angle does not change during the line-laying process, thus guaranteeing the accuracy and stability of the line-laying.

[0015] Secondly, the ruler and measuring tape work together; by stretching the measuring tape along the ruler's direction for length measurement and marking, the accuracy of the angle and length of the layout is ensured. In construction, for structural layouts requiring precise angles and lengths, such as stairwells and irregularly shaped columns, this telescopic ruler provides high-precision layout, reducing construction errors. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram showing the connection of the two rulers in this utility model;

[0019] Figure 3 This is an exploded view of the connection point between the two rulers of this utility model;

[0020] Figure 4 This is a schematic diagram showing the installation positions of the spring and the retaining ball of this utility model;

[0021] Figure 5 This is an exploded view of the ruler and measuring tape of this utility model;

[0022] Figure Labels

[0023] 1. First ruler; 11. Mounting hole; 12. Spring; 13. Ball catch; 14. Rotating part; 15. Through hole; 2. Second ruler; 21. Positioning hole; 22. Rotating hole; 23. Slot; 3. Angle adjustment assembly; 31. Locking part; 311. Stop block; 312. Internal threaded sleeve; 32. Bolt; 321. Screw; 322. Hand-tightening end; 41. Ruler strip; 42. Ruler hook; 5. Slide groove; 51. Protrusion; 6. Stop plate. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] Reference Figures 1 to 5 As shown in the figure, this utility model embodiment provides a telescopic ruler for quick line laying on the construction site, which mainly includes two rulers, an angle adjustment component 3 and two measuring tapes.

[0027] Two rulers are set in parallel, with one end of each ruler rotatably connected; the one located on top is defined as the first ruler 1, and the one located on the bottom is defined as the second ruler 2; in some practical applications, refer to... Figures 2 to 3 As shown, the lower side of the end of the first ruler 1 has a rotating part 14, and the end of the second ruler 2 has a rotating hole 22 that passes through its body. The rotating part 14 is rotatably connected to the rotating hole 22, thereby realizing the rotatable connection between the two rulers, so that either ruler can rotate around its end relative to the other ruler to adjust the angle between the two rulers.

[0028] Angle adjustment component 3 is located at the ends of the two rulers to adjust and lock the relative angle between the two rulers;

[0029] Two measuring tapes are located at the free ends of two rulers respectively (the measuring tape is existing technology, and the main structure of the measuring tape is not shown in the figure, only a part of the strip structure is shown). The strip 41 of each measuring tape can be detachably installed on the corresponding ruler, and the stretching direction of the strip 41 is consistent with the length direction of the corresponding ruler.

[0030] In some practical applications, refer to Figure 2 and Figure 5 As shown, each ruler has a groove 5 extending along its length on its upper surface. A baffle 6 is slidably connected in the groove 5. A protrusion 51 is provided in the groove 5. The ruler hook 42 at the end of the ruler strip 41 is hooked on the protrusion 51. By sliding the baffle 6 above the protrusion 51, the ruler strip 41 is limited to the gap between the baffle 6 and the protrusion 51. In this embodiment, the baffle 6 is slidably connected to the corresponding groove 5 in a suspended state. The baffle 6 is slidably connected to the groove 5 through the sliding parts connected to its two ends (i.e., the protruding parts at both ends of the baffle 6 in the figure). Therefore, when the ruler hook 42 is hooked on one side of the protrusion 51, when the worker pushes the baffle 6 (generally, the top of the baffle 6 is configured with a frosted surface to facilitate the worker's movement within the groove 5) to the top of the protrusion 51, the baffle 6, in conjunction with the protrusion 51, can provide a certain limiting effect on the ruler strip 41 in front of the ruler hook 42, so as to prevent the ruler hook 42 from detaching from the protrusion 51. Similarly, since the ruler strip 41 has a certain degree of toughness, when the baffle 6 is pushed away from the protrusion 51, the worker can slightly pry the ruler strip 41 upwards to release the relative limiting between the ruler hook 42 and the protrusion 51, so as to facilitate the removal of the entire measuring tape. It should be noted that the empty space between the baffle 6 and the slide 5 allows the measuring tape hook 42 and part of the measuring tape strip 41 to be inserted or removed from this empty space.

[0031] In summary, the two rulers are arranged parallel to each other and connected at one end by a rotatable mechanism. This structure allows the tool to flexibly change shape to adapt to different line-laying angles. Angle adjustment component 3 is located at the end of the rulers and is used to adjust and lock the relative angle between the two rulers. This not only allows the user to precisely adjust the ruler angle according to the actual line-laying angle requirements, but also locks it after adjustment to the appropriate angle, ensuring that the angle does not change during the line-laying process, thus guaranteeing the accuracy and stability of the line-laying.

[0032] Meanwhile, the ruler and measuring tape work together; by stretching the measuring tape along the ruler's direction, length measurements and markings are made, ensuring the accuracy of angles and lengths during layout. In construction, for structural layouts requiring precise angles and lengths, such as stairwells and irregularly shaped columns, this telescopic ruler provides high-precision layout, reducing construction errors.

[0033] The measuring tape strip 41 is detachable, allowing for flexible use in various scenarios. If the measuring tape is damaged or needs to be replaced with a different size, it can be quickly disassembled and replaced without replacing the entire tool. Furthermore, the two measuring tapes are located at different free ends of the ruler, allowing for simultaneous measurement of lengths in different directions, further improving work efficiency. For example, when measuring the side length of an irregular polygon, both measuring tapes can be used simultaneously to measure adjacent sides, making it more convenient and efficient.

[0034] At the construction site, construction workers can easily carry the telescopic ruler (that is, when not in use, the measuring tape can be removed and the two rulers can be rotated to overlap to reduce its space occupation), and the operation is simple and easy to understand.

[0035] In other practical applications, refer to Figure 1 , Figure 2 and Figure 4 As shown, the lower end of the first ruler 1 is provided with a mounting hole 11, and a spring 12 and a retaining ball 13 located at the end of the spring 12 are coaxially mounted in the mounting hole 11; the upper end of the second ruler 2 is provided with a plurality of positioning holes 21 distributed around its rotation axis; when the two rulers rotate relative to each other, the retaining ball 13 can be pushed by the spring 12, so that the retaining ball 13 can be at least partially embedded in any of the positioning holes 21.

[0036] When the two rulers rotate relative to each other, the spring 12 pushes the retaining ball 13, which searches for a suitable positioning hole 21 under the elastic force of the spring 12. Once the retaining ball 13 corresponds to a positioning hole 21, the elastic force of the spring 12 will cause the retaining ball 13 to be at least partially embedded in the positioning hole 21, thereby achieving the positioning of the relative angle of the two rulers. By using the spring 12 to push the retaining ball 13 into the positioning hole 21, construction workers can quickly find the preset fixed angle position when adjusting the angle of the two rulers. Compared with simply relying on the angle adjustment component 3 to manually fine-tune and lock the angle, this method is more intuitive and convenient. For example, when there is a need for common line laying angles such as 90° and 45° (as shown in the figure, there are four positioning holes 21, which are distributed at ninety degrees to each other, so that the angle between the first ruler 1 and the second ruler 2 can be quickly switched between 0°, 90°, 180°, and 270°), the retaining ball 13 can quickly embed into the corresponding positioning hole 21 without repeated measurement and adjustment, greatly improving the speed of determining the line laying angle.

[0037] Specifically, a chamfer can be made at the upper opening of the positioning hole 21 on the second ruler 2 to facilitate the entry and exit of the ball 13 from the positioning hole 21.

[0038] In some practical applications, the angle adjustment component 3 is optimized based on any of the above implementation methods. Specifically, referring to... Figures 2 to 3As shown, the angle adjustment assembly 3 includes a locking component 31 and a bolt component 32.

[0039] The locking component 31 consists of a stop block 311 and an internally threaded sleeve 312 located at the end of the stop block 311. The rotating part 14 is provided with a through hole 15 coaxial with it, and the internally threaded sleeve 312 is inserted into the through hole 15. The bolt component 32 has a screw 321 and a hand-tightening end 322 located at the end of the screw 321. The screw 321 is threadedly connected to the internally threaded sleeve 312, so that the stop block 311 and the hand-tightening end 322 abut against the second ruler 2 and the first ruler 1 respectively, thereby achieving relative locking of the two rulers.

[0040] When the hand-tightening end 322 is rotated, the screw 321 moves within the internal threaded sleeve 312, thereby pushing the stop 311 and the hand-tightening end 322 to firmly abut against the second ruler 2 and the first ruler 1, respectively. The friction generated by this abutment effectively restricts the relative rotation of the two rulers, thus achieving relative locking and ensuring that the angle remains constant during the layout process. By rotating the hand-tightening end 322 of the bolt 32, the construction worker can precisely control the movement distance of the screw 321 within the internal threaded sleeve 312, thereby fine-tuning the angle between the two rulers and achieving a secure lock once the desired angle is reached. Compared to some simple snap-fit ​​angle fixing methods, this method provides a more precise angle adjustment range, meeting the needs of various complex angle layouts on construction sites. For example, in some architectural decorative line layout work requiring precise angles, the telescopic ruler can be accurately adjusted to the required angle and fixed, ensuring construction accuracy.

[0041] Based on the aforementioned angle adjustment component 3, the lower end of the second ruler 2 has a slot 23 (refer to...). Figure 2 and Figure 3 This design ensures that when the two rulers are locked together, the stop block 311 is fully positioned within the slot 23. On construction sites, rulers are often placed flat on surfaces such as the ground or table for marking or measuring. With the stop block 311 embedded in the slot 23, the ruler can be placed stably on these surfaces, preventing instability or tilting due to the stop block 311 protruding.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A telescopic ruler for rapid line setting out on construction sites, characterized in that, include: Two rulers are arranged in parallel, with one end of each ruler rotatably connected; the one located on top is defined as the first ruler (1), and the one located on the bottom is defined as the second ruler (2). An angle adjustment component (3) is provided at the ends of the two rulers to adjust and lock the relative angle between the two rulers; The measuring tape has two strips, which are located at the free ends of two rulers respectively. Each strip (41) of the measuring tape can be detachably installed on the corresponding ruler, and the stretching direction of the strip (41) is consistent with the length direction of the corresponding ruler.

2. A telescopic ruler for rapid line setting out on construction sites according to claim 1, characterized in that, The lower end of the first ruler (1) is provided with a mounting hole (11), and a spring (12) and a retaining ball (13) located at the end of the spring (12) are coaxially mounted in the mounting hole (11); the upper end of the second ruler (2) is provided with a number of positioning holes (21) distributed around its rotation axis; when the two rulers rotate relative to each other, the retaining ball (13) is pushed by the spring (12) so that the retaining ball (13) can be at least partially embedded in any positioning hole (21).

3. A telescopic ruler for rapid line setting out on construction sites according to claim 2, characterized in that, The upper opening of the positioning hole (21) on the second ruler (2) is chamfered.

4. A telescopic ruler for rapid line setting out on construction sites according to claim 1, characterized in that, The lower side of the end of the first ruler (1) has a rotating part (14), and the end of the second ruler (2) has a rotating hole (22) that passes through its body. The rotating part (14) is rotatably connected to the rotating hole (22).

5. A telescopic ruler for rapid line setting out on construction sites according to claim 4, characterized in that, The angle adjustment component (3) includes: The locking component (31) consists of a stop block (311) and an internally threaded sleeve (312) located at the end of the stop block (311). The rotating part (14) is provided with a through hole (15) coaxial with it, and the internally threaded sleeve (312) is inserted into the through hole (15). The bolt (32) has a screw (321) and a hand-tightening end (322) located at the end of the screw (321), the screw (321) being threaded into the internal thread sleeve (312) so that the stop (311) and the hand-tightening end (322) abut against the second ruler (2) and the first ruler (1) respectively, thereby achieving relative locking of the two rulers.

6. A telescopic ruler for rapid line setting out on construction sites according to claim 5, characterized in that, The lower end of the second ruler (2) has a groove (23) such that when the two rulers are locked relative to each other, the stop (311) is completely located in the groove (23).

7. A telescopic ruler for rapid line setting out on construction sites according to claim 1, characterized in that, Each ruler has a groove (5) extending along its length on its upper surface. A baffle (6) is slidably connected in the groove (5). A protrusion (51) is provided in the groove (5). The ruler hook (42) at the end of the ruler strip (41) is hooked on the protrusion (51). By sliding the baffle (6) above the protrusion (51), the ruler strip (41) is limited to the gap between the baffle (6) and the protrusion (51).

8. A telescopic ruler for rapid line setting out on construction sites according to claim 7, characterized in that, The top of the baffle (6) is configured with a frosted surface.

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