A measuring scale for engineering cost
By integrating extension components, limiting mechanisms, and connecting mechanisms, the engineering cost measuring ruler solves the problems of cumbersome operation of multiple tools and unreliable locking, realizing convenient and stable length and angle measurement, and improving measurement efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIYAN HONGZHI ENGINEERING CONSULTING CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-07-03
AI Technical Summary
Existing engineering cost measuring rulers have limited functionality, require multiple tools to operate, resulting in cumbersome operation. Their telescopic and angle measurement ranges are limited and locking is unreliable, affecting measurement efficiency and accuracy.
A measuring ruler integrating an extension component, a limiting mechanism, a connecting mechanism, and a level measuring device is designed. Automatic locking is achieved through the cooperation of a limiting plate and a spring, and the slider drives the limiting ring to unlock or lock the angle. Large angle measurement is achieved through a rotatable adjustment plate, and the integrated level measuring device provides a reference.
It enables convenient length and angle measurement, automatically locks to prevent errors, expands the measurement range, improves the stability and accuracy of measurement, and enhances the efficiency and accuracy of engineering cost measurement.
Smart Images
Figure CN224455588U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring tools, and in particular to a measuring ruler for engineering cost estimation. Background Technology
[0002] In engineering cost estimation, architectural design, and mechanical surveying, measuring rulers are indispensable basic tools. They are mainly used to accurately obtain geometric parameters such as length and angle from drawings, providing key data for subsequent cost accounting and construction.
[0003] Currently, technicians working in this field often need to combine multiple independent measuring tools to complete a comprehensive measurement task. For example, they might use a ruler or tape measure to measure length, a protractor to measure angles, and a spirit level to calibrate the measurement reference when necessary. This reliance on multiple separate tools makes the operation process cumbersome, requiring technicians to frequently switch between different tools. This not only reduces work efficiency but also easily introduces cumulative errors during tool changes and repositioning.
[0004] Furthermore, existing single-function measuring tools also have structural limitations. For length measurement, ordinary rulers have a fixed range, which cannot meet the measurement needs of large drawings. Some measuring rulers with extension functions often use manual knobs or buckles for locking the extension parts, which is inconvenient to operate and prone to accidental slippage due to loosening or loosening during use, directly affecting the accuracy of the measurement data. For angle measurement, traditional protractors are usually limited to a range of 180 degrees, which is insufficient when dealing with the increasing number of obtuse or acute angle structures in modern engineering design, making direct and accurate measurements difficult. These structural deficiencies restrict the efficiency and accuracy of engineering measurement.
[0005] Therefore, this utility model proposes a measuring ruler for engineering cost estimation to address the shortcomings of existing technologies. Utility Model Content
[0006] In view of the problems of existing engineering cost measuring rulers, such as limited functionality, cumbersome operation due to the need to use multiple tools, and limited range and unreliable locking of their extension and angle measurement structures, this utility model aims to provide an engineering cost measuring ruler with an improved structure that can effectively solve the above problems.
[0007] This utility model provides a measuring ruler for engineering cost estimation, including: a measuring ruler, an extension component, a measuring mechanism, a connecting mechanism, and a level measuring device; as well as a limiting mechanism.
[0008] The limiting mechanism includes a limiting plate and a spring for driving the limiting plate to reset.
[0009] Furthermore, the measuring ruler, the extension assembly, the measuring mechanism, the connecting mechanism, and the limiting mechanism are combined in the following manner: the extension assembly includes an extension ruler that can slide and extend along the length direction of the measuring ruler; the measuring mechanism includes a protractor; the connecting mechanism is used to rotatably connect the measuring mechanism and the measuring ruler; the limiting plate of the limiting mechanism automatically locks the extension ruler under the action of the spring; and the connecting mechanism includes a limiting ring that can slide along a preset track, which is used to unlock or lock the protractor by sliding.
[0010] Preferably, the limiting mechanism further includes a fixed rod, and the limiting plate can rotate around the fixed rod; the extension ruler is provided with a limiting block that engages with the limiting plate.
[0011] Preferably, the spring is sleeved on the fixed rod and is used to apply an elastic force to the limiting plate to make it tend to lock the limiting block.
[0012] Preferably, the limiting plate is configured to disengage from the limiting block when rotated around the fixed rod under the action of an external force, thereby releasing the locking of the extension ruler.
[0013] Preferably, the connecting mechanism further includes a fixed shell disposed on the measuring ruler, the fixed shell having a limiting hole for the limiting ring to be engaged, and the limiting ring being slidably disposed within the fixed shell.
[0014] Preferably, the connecting mechanism further includes a slider connected to the limiting ring and exposed outside the fixed housing, for driving the limiting ring to slide.
[0015] Preferably, the limiting ring is configured to lock the protractor when it is inside the limiting hole and to release the locking of the protractor when it slides out of the limiting hole.
[0016] Preferably, the measuring mechanism further includes an adjustment plate one and an adjustment plate two, both of which are rotatably stacked on the protractor.
[0017] Preferably, the level measuring device is embedded in the middle of the measuring ruler.
[0018] This utility model has the following beneficial effects:
[0019] 1. This utility model solves the technical problems of existing telescopic rulers that require manual tightening and fixing, are cumbersome to operate, and are prone to slippage due to forgetting to lock, by setting a limiting mechanism consisting of a limiting plate, a spring, and a limiting block on the extension ruler. It achieves the technical effects of convenient operation, automatic reset and locking, effective prevention of measurement errors, and improved measurement stability and reliability.
[0020] 2. This utility model solves the problems of inconvenience, limited range, and error caused by deformation of a single plate in traditional protractors by setting up a connecting mechanism that drives the limiting ring to slide in the fixed shell to unlock or lock the protractor, and uses rotatable and superimposed adjustment plates one and two. It achieves the technical effects of flexible and fast angle adjustment, expanded measurement range, and improved measurement accuracy of complex and irregular angles through double plate calibration.
[0021] 3. This utility model solves the technical problems of existing measuring tools having single functions, requiring the carrying of multiple tools, and lacking a unified measurement benchmark, resulting in low accuracy, by integrating a retractable length measuring structure, a rotatable angle measuring structure, and a level measuring instrument into the main body of the measuring ruler. It achieves the technical effect of high functional integration, multiple uses of one ruler, and convenient portability. Furthermore, by calibrating the benchmark with a level, it comprehensively improves the efficiency and accuracy of engineering cost measurement. Attached Figure Description
[0022] Figure 1 This is a three-dimensional schematic diagram of a measuring ruler for engineering cost estimation proposed in this utility model;
[0023] Figure 2 This is a schematic diagram of the structure of a measuring ruler for engineering cost estimation proposed in this utility model;
[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;
[0025] Figure 4 for Figure 2 Enlarged view of point B in the middle.
[0026] Legend:
[0027] 1. Measuring ruler; 2. Limiting mechanism;
[0028] 21. Fixing rod; 22. Limiting plate; 23. Spring;
[0029] 24. Extension component; 241. Limiting block; 242. Extension ruler;
[0030] 3. Connecting mechanism; 31. Fixed shell; 32. Restricting ring; 33. Slider; 34. Restricting hole;
[0031] 4. Measuring mechanism; 41. Protractor; 42. Adjusting plate one; 43. Adjusting plate two;
[0032] 5. Level measuring instrument. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0034] Example:
[0035] Please refer to Figures 1 to 4 This utility model provides a measuring ruler 1 for engineering cost estimation, which aims to solve the problems of the existing measuring ruler 1 having a single function, limited measurement range, cumbersome operation of the locking structure, and easy to affect the measurement accuracy due to errors.
[0036] like Figure 1 and Figure 2 As shown, the engineering cost measuring ruler 1 includes a measuring ruler 1, and an extension component 24, a limiting mechanism 2, a connecting mechanism 3, a measuring mechanism 4, and a level measuring device 5 disposed on the measuring ruler 1; the measuring ruler 1 serves as the main body for mounting the entire device and the basic measuring platform; the extension component 24 cooperates with the limiting mechanism 2 to realize the extension and extension adjustment and automatic locking of the measuring length; the measuring mechanism 4 cooperates with the connecting mechanism 3 to realize the rotation adjustment and unlocking / locking of the measuring angle; the level measuring device 5 is used to provide a horizontal reference for the measurement operation.
[0037] To solve the above-mentioned technical problems, the core of the technical solution of this embodiment lies in setting up a unique limiting mechanism 2 and a connecting mechanism 3, which respectively form a specific structural cooperation and connection relationship with the extension component 24 and the measuring mechanism 4.
[0038] Please refer to Figure 3 The core structure for length adjustment and locking will be explained in detail below:
[0039] The extension assembly 24 includes an extension ruler 242 that is slidably connected to the end of the measuring ruler 1 along the length direction of the measuring ruler 1. A protruding limiting block 241 is fixedly connected to the extension ruler 242. The limiting mechanism 2 includes a fixed rod 21 fixedly connected to the measuring ruler 1, a limiting plate 22 rotatably connected to the fixed rod 21, and a spring 23 sleeved on the fixed rod 21. The spring 23 continuously applies elastic force to the limiting plate 22, so that the limiting plate 22 is engaged with the limiting block 241 in its natural state, thereby firmly locking the extension ruler 242. When adjustment is required, the limiting plate 22 is driven to rotate around the fixed rod 21 by external force to overcome the elastic force of the spring 23, and the limiting plate 22 is disengaged from the limiting block 241. At this time, the extension ruler 242 can slide freely.
[0040] Please refer to Figure 4 The core structure for angle measurement and locking will be explained in detail below:
[0041] The connecting mechanism 3 includes a fixed housing 31 fixedly connected to the other end of the measuring ruler 1, and a limiting hole 34 for locking is provided on the fixed housing 31; the measuring mechanism 4 includes a protractor 41 rotatably connected to the fixed housing 31; the connecting mechanism 3 also includes a limiting ring 32 slidably disposed in the fixed housing 31 and a slider 33 connected to the limiting ring 32, the slider 33 being exposed outside the fixed housing 31; in the assembled state, by driving the slider 33, the limiting ring 32 can be driven to slide along a preset track in the fixed housing 31, so that the limiting ring 32 selectively engages or disengages from the limiting hole 34. When the limiting ring 32 engages in the limiting hole 34, the protractor 41 is locked and cannot rotate; when the limiting ring 32 disengages from the limiting hole 34, the protractor 41 can rotate freely; the measuring mechanism 4 also includes an adjusting plate 1 42 and an adjusting plate 2 43, both of which are rotatably stacked on the protractor 41.
[0042] Based on the above embodiments, the present invention may further include the following preferred technical solutions:
[0043] As a preferred structural solution, in order to achieve accurate measurement over a large angle range, the measuring mechanism 4 also includes an adjustment plate 42 and an adjustment plate 43. Both the adjustment plate 42 and the adjustment plate 43 are rotatably stacked on the protractor 41 and rotate around the same rotation center as the protractor 41.
[0044] As a preferred configuration, in order to achieve reliable automatic locking, the spring 23 is sleeved on the fixed rod 21 and applies a continuous elastic force to the limiting plate 22. Under the action of this elastic force, one end of the limiting plate 22 always tends to engage with the limiting block 241, thereby forming a stable locking state without external force intervention.
[0045] As another preferred configuration, in order to achieve convenient angle unlocking and locking, the slider 33 is fixedly connected to the limiting ring 32, and the position of the slider 33 is convenient for pushing and pulling with the fingers. When the limiting ring 32 is driven by the slider 33 to a position where a part of it cooperates with the limiting hole 34 on the fixed shell 31, the limiting ring 32 limits the rotation of the protractor 41; when the limiting ring 32 is driven by the slider 33 to a position where it is disengaged from the limiting hole 34, the limit is released.
[0046] As a preferred configuration, to facilitate the operator's observation and calibration during the measurement process, the level measuring device 5 is embedded in the middle of the measuring ruler 1.
[0047] The working principle is as follows:
[0048] When adjusting the measuring length, the sliding limiting plate 22 is rotated around the fixed rod 21. At this time, the limiting plate 22 overcomes the elastic force of the spring 23 and disengages from the locking block 241 on the extension ruler 242, thereby releasing the lock on the extension ruler 242. The user can pull out or retract the extension ruler 242 as needed. After adjustment, the limiting plate 22 is released, and the rebound force of the spring 23 will drive the limiting plate 22 to automatically reset and re-lock onto the limiting block 241, immediately achieving a stable lock on the extension ruler 242. When measuring the angle, the slider 33 is pushed, and the slider 33 drives the limiting ring 32 to move along the track inside the fixed shell 31, causing the limiting ring 32 to disengage from the limiting hole 34 of the fixed shell 31, thereby releasing the rotation of the protractor 41. Once locked, the protractor 41 can rotate freely to align with the angle to be measured, and large angle measurements can be achieved through the cooperation of adjustment plate 1 42 and adjustment plate 2 43. After measurement or positioning, the slider 33 is moved in the reverse direction to re-engage the limiting ring 32 into the limiting hole 34, thus fixing the protractor 41. During all length or angle measurement operations, the operator can observe the horizontal measuring device 5 set in the middle of the measuring ruler 1 to ensure that the entire measuring ruler 1 is in a horizontal state, providing a precise benchmark for all measurements and avoiding errors caused by tilting. Through the synergistic effect of the limiting mechanism 2 and the connecting mechanism 3, this utility model solves the problems of the existing measuring ruler 1 having a single function, limited range, cumbersome locking operation, and easy measurement errors.
Claims
1. A measuring ruler for engineering cost estimation, comprising: Measuring ruler (1); The extension assembly (24) includes an extension ruler (242) that slides and extends along the length direction of the measuring ruler (1). Measuring mechanism (4), the measuring mechanism (4) includes a protractor (41); A connecting mechanism (3) is used to rotatably connect the measuring mechanism (4) and the measuring ruler (1). A level measuring device (5) is mounted on the measuring ruler (1); Its features are, The measuring ruler for engineering cost also includes a limiting mechanism (2), which includes a limiting plate (22) that cooperates with the extension ruler (242) and a spring (23) for driving the limiting plate (22) to reset. The limiting plate (22) is used to automatically lock the extension ruler (242) under the action of the spring (23). Furthermore, the connecting mechanism (3) includes a limiting ring (32) that slides along a preset track, the limiting ring (32) being used to unlock or lock the protractor (41) by sliding it.
2. The measuring tape for construction cost according to claim 1, wherein The limiting mechanism (2) further includes a fixed rod (21), and the limiting plate (22) rotates around the fixed rod (21); the extension ruler (242) is provided with a limiting block (241) that engages with the limiting plate (22).
3. The measuring tape for construction cost according to claim 2, wherein The spring (23) is sleeved on the fixed rod (21) and is used to apply a spring force to the limiting plate (22) to make it tend to lock the limiting block (241).
4. The measuring tape for construction cost according to claim 2, wherein The limiting plate (22) is configured to disengage from the limiting block (241) when rotated around the fixed rod (21) under the action of an external force, thereby releasing the lock on the extension ruler (242).
5. The measuring tape for construction cost according to claim 1, wherein The connecting mechanism (3) further includes a fixed shell (31) disposed on the measuring ruler (1), and the fixed shell (31) is provided with a limiting hole (34) for the limiting ring (32) to be inserted; the limiting ring (32) is slidably disposed in the fixed shell (31).
6. The measuring tape for construction cost according to claim 5, wherein The connecting mechanism (3) further includes a slider (33), which is connected to the limiting ring (32) and exposed outside the fixed shell (31) for driving the limiting ring (32) to slide.
7. The measuring tape for construction cost according to claim 5, wherein The limiting ring (32) is configured to lock the protractor (41) when it is inside the limiting hole (34) and release the locking of the protractor (41) when it slides out of the limiting hole (34).
8. The measuring tape for construction cost according to claim 1, wherein The measuring mechanism (4) also includes an adjustment plate one (42) and an adjustment plate two (43), both of which are rotatably stacked on the protractor (41).
9. The measuring tape for construction cost according to claim 1, wherein The level measuring device (5) is embedded in the middle of the measuring ruler (1).