Drawing measuring scale for engineering cost

Abstract

The utility model discloses a drawing measuring scale for engineering cost, which relates to the technical field of measuring scales and comprises a main scale, a main scale plate is fixedly connected to the bottom of the front end of the main scale, a through hole is arranged in the middle of the front end of the bottom of the main scale in a penetrating manner, and auxiliary scales are connected to two sides of the inner wall of the through hole in a sliding manner. When the ruler is normally carried, the auxiliary ruler is retracted into the main ruler to shorten the length of the whole ruler body, the ruler is convenient to carry, when the ruler is used, a user rotates the handle, the toothed bar drives the rack to move, the auxiliary ruler slides in the through hole, after the auxiliary ruler is pulled out, the auxiliary scale plate rotates in the storage groove through the rotating shaft, the first positive magnetic strip and the first negative magnetic strip attract each other, and the ruler is convenient to carry. The edge of the auxiliary scale plate and the edge of the main scale plate are located on the same straight line, so that the edge measuring edges of the main scale plate and the auxiliary scale plate are attached to a line to be measured during measurement, the measuring error is increased, the length expansion and contraction of the whole ruler body are considered, the ruler is convenient to carry, and the measuring accuracy is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring rulers, in particular to a drawing measuring ruler for engineering cost. Background Art

[0002] With the continuous development of my country's social economy, people's living standards are also rapidly improving, which also drives the rapid development of the construction industry. For the completion of a project, its budget is inseparable from the engineering cost industry. When they make a budget, they often use a special measuring ruler for measurement.

[0003] A Chinese patent with authorization announcement number CN205403644U discloses a measuring ruler for engineering cost, including a measuring ruler body, the measuring ruler body including a base and a ruler body, the top of the base is connected to the ruler body, a luminous plate is provided on one side of the ruler body, and scales are provided on the luminous plate. There are arc-shaped areas on both sides of the ruler body, and rubber sleeves are provided on the outer side of the arc-shaped areas.

[0004] Although this measuring ruler used for engineering cost can be extended and retracted to adjust the length, it is connected by multiple ruler bodies, and the multiple ruler bodies are of different sizes. When the ruler bodies are extended, the side walls with scales on the ruler bodies cannot form a straight line, making it impossible to completely fit the ruler body with the line to be measured to ensure that the ruler body and the line to be measured are in a parallel state during measurement, which can easily lead to deviations in the measurement results. There is still room for improvement. Utility Model Content

[0005] The utility model aims to provide a measuring ruler for engineering cost drawings to solve at least any one of the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ruler for measuring drawings of engineering cost, comprising a main ruler, a main scale plate is fixedly connected to the bottom of the front end of the main ruler, a through hole is penetrated and arranged at the middle position of the front end of the bottom of the main ruler, sub-rules are slidably connected to both sides of the inner wall of the through hole, storage grooves are penetrated and arranged at the middle positions of the bottom of the front ends of the two sub-rules, a partition plate is fixedly connected to the middle position of the inner wall of the through hole, a rotating shaft is arranged between the middle positions of the two sides of the inner walls of the two storage grooves, the rear ends of the outer walls of the two rotating shafts are fixedly connected to sub-scale plates, and a second scale plate is penetrated and arranged at the middle position of the top of the two sub-scale plates near the rear end Positive magnetic strip, the first positive magnetic strip is penetrated and arranged at the middle position of the bottom of the front end of the two auxiliary scale plates, the second negative magnetic strip is penetrated and arranged at the middle position of the top of the inner wall of the two through holes, the limit plate is fixedly connected to the middle position of the front end of the inner wall of the two storage grooves, the first negative magnetic strip is penetrated and arranged at the middle position of the front end of the two limit plates, the top of the two auxiliary scales is fixedly connected with a rack, the two ends of the top of the rear end of the two main scales are penetrated and rotatably connected with a rotating rod, the two rotating rods pass through the through hole, the front end of the outer wall of the two rotating rods is fixedly connected with a rack rod, and the two racks are meshed and connected with adjacent rack rods.

[0007] Preferably, both ends of the top of the front end of the inner wall of the through hole are fixedly connected with rotating parts.

[0008] Preferably, the two rotating rods are both rotatably connected to adjacent rotating members.

[0009] Preferably, handles are fixedly connected to both sides of the rear ends of the outer walls of the two rotating rods.

[0010] Preferably, a slide groove is provided through and in the middle of the rear end of the inner wall of the through hole, and the rear ends of the two secondary rulers are fixedly connected with slide bars, and the two slide bars are slidably connected to the slide groove.

[0011] The beneficial effects of the utility model are as follows:

[0012] In the utility model, when normally carried, the auxiliary ruler is retracted into the main ruler to shorten the length of the entire ruler body for easy carrying. When in use, the user turns the handle, the gear rod drives the gear rack to move, and the auxiliary ruler slides in the through hole. After the auxiliary ruler is pulled out, the auxiliary scale plate is rotated in the storage groove through the rotating shaft, and the first positive magnetic strip and the first negative magnetic strip are mutually adsorbed, so that the edges of the auxiliary scale plate and the main scale plate are located in the same straight line, so that when measuring, the edge measuring edges of the main scale plate and the auxiliary scale plate are in contact with the line to be measured to improve the measurement error. Therefore, the length extension and contraction of the entire ruler body are taken into account for easy carrying and the accuracy of measurement is ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is the main scale cross-sectional view of the utility model;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the rotating part of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the auxiliary ruler of the utility model.

[0017] In the figure: 1. main scale; 2. handle; 3. through hole; 4. secondary scale; 5. main scale plate; 6. rack; 7. partition plate; 8. rotating part; 9. first negative magnetic strip; 10. rack rod; 11. rotating rod; 12. second positive magnetic strip; 13. second negative magnetic strip; 14. storage slot; 15. secondary scale plate; 16. first positive magnetic strip; 17. rotating shaft; 18. limit plate; 19. slide slot; 20. slide bar. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides Figure 1-4 The engineering cost drawing measuring ruler shown in the figure comprises a main ruler 1, a main scale plate 5 is fixedly connected to the bottom of the front end of the main ruler 1, a through hole 3 is penetrated and arranged in the middle position of the front end of the bottom of the main ruler 1, sub-rules 4 are slidably connected to both sides of the inner wall of the through hole 3, a partition plate 7 is fixedly connected to the middle position of the inner wall of the through hole 3, the bottom of the front end of the two sub-rules 4 are penetrated and arranged with through holes 3, the front ends of the tops of the inner walls of the two through holes 3 are provided with rotating shafts 17, the rear ends of the outer walls of the two rotating shafts 17 are fixedly connected with sub-scale plates 15, and the middle positions of the tops of the two sub-scale plates 15 are penetrated and arranged with second positive magnetic strips 1 2, the front middle of the two auxiliary scale plates 15 are penetrated and provided with a first positive magnetic strip 16 near the bottom, the middle of the top of the inner wall of the two through holes 3 are penetrated and provided with a second negative magnetic strip 13, the middle of the top of the front end of the two auxiliary scales 4 are penetrated and provided with a first negative magnetic strip 9, the top of the two auxiliary scales 4 are fixedly connected with a rack 6, the two ends of the top of the rear end of the two main scales 1 are penetrated and rotatably connected with a rotating rod 11, the two rotating rods 11 pass through the through hole 3, the front ends of the outer walls of the two rotating rods 11 are fixedly connected with a gear rod 10, and the two racks 6 are meshed and connected with the adjacent gear rods 10.

[0020] When normally carried, the secondary ruler 4 is retracted into the main ruler 1 to shorten the length of the entire ruler body for easy carrying. When in use, the user turns the handle 2, the rotating rod 11 rotates in the rotating member 8, the gear rod 10 drives the gear rack 6 to move, and the secondary ruler 4 slides in the through hole 3. After the secondary ruler 4 is pulled out, the secondary scale plate 15 is rotated in the storage groove 14 through the rotating shaft 17 to separate the second positive magnetic strip 12 and the second negative magnetic strip 13, and at the same time, the first positive magnetic strip 16 and the first negative magnetic strip 9 are mutually attracted, so that the edges of the secondary scale plate 15 and the main scale plate 5 are located in the same straight line, so that when measuring, the edge measuring edges of the main scale plate 5 and the secondary scale plate 15 are in contact with the line to be measured to improve the measurement error. Therefore, the length extension and contraction of the entire ruler body are taken into account for easy carrying and the accuracy of measurement is ensured.

[0021] Both ends of the top of the front end of the inner wall of the through hole 3 are fixedly connected with rotating parts 8, and the two rotating rods 11 are rotatably connected to the adjacent rotating parts 8.

[0022] The normal rotation of the rotating rod 11 is ensured by the rotating member 8 .

[0023] Handles 2 are fixedly connected to both sides of the rear ends of the outer walls of the two rotating rods 11.

[0024] The handle 2 facilitates the user to rotate the rotating rod 11 .

[0025] The two secondary scales 4 are separated by a partition plate 7 to avoid mutual influence.

[0026] A slide groove 19 is provided through the middle position of the rear end of the inner wall of the through hole 3 , and a slide bar 20 is fixedly connected to the rear ends of the two secondary rulers 4 . The two slide bars 20 are slidably connected to the slide groove 19 .

[0027] When the secondary ruler 4 is moving, the slide bar 20 will also slide in the slide groove 19 to prevent the secondary ruler 4 from being separated from the main ruler 1 .

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ruler for measuring engineering cost drawings, comprising a main ruler (1), characterized in that: The front bottom of the main scale (1) is fixedly connected with a main scale plate (5), a through hole (3) is penetrated and provided at the middle position of the front bottom of the main scale (1), both sides of the inner wall of the through hole (3) are slidably connected with sub-scales (4), the middle positions of the front bottom of the two sub-scales (4) are penetrated and provided with storage grooves (14), the middle position of the inner wall of the through hole (3) is fixedly connected with a partition plate (7), a rotating shaft (17) is provided between the middle positions of the inner walls of the two storage grooves (14), the rear ends of the outer walls of the two rotating shafts (17) are fixedly connected with sub-scale plates (15), the middle positions of the tops of the two sub-scale plates (15) are penetrated and provided with second positive magnetic strips (12), the middle positions of the front ends of the two sub-scale plates (15) are located near the bottom, and the middle positions of the front ends of the two sub-scale plates (15) are located near the bottom. The first positive magnetic strip (16) is penetrated and provided at each of the two through holes (3), the second negative magnetic strip (13) is penetrated and provided at the middle position of the top of the inner wall of each of the two through holes (3), the limiting plate (18) is fixedly connected to the middle position of the front end of the top of the inner wall of each of the two storage slots (14), the first negative magnetic strip (9) is penetrated and provided at the middle position of the front end of each of the two limiting plates (18), the top of each of the two secondary scales (4) is fixedly connected to a rack (6), the top ends of the rear ends of the two main scales (1) are penetrated and rotatably connected to a rotating rod (11), the two rotating rods (11) pass through the through holes (3), the front ends of the outer walls of the two rotating rods (11) are fixedly connected to a rack rod (10), and the two rack rods (6) are meshingly connected to the adjacent rack rods (10).

2. The engineering cost drawing measuring ruler according to claim 1, characterized in that: Rotating parts (8) are fixedly connected to both ends of the top of the front end of the inner wall of the through hole (3).

3. The engineering cost drawing measuring ruler according to claim 2, characterized in that: The two rotating rods (11) are both rotationally connected to adjacent rotating members (8).

4. The engineering cost drawing measuring ruler according to claim 1, characterized in that: Handles (2) are fixedly connected to both sides of the rear ends of the outer walls of the two rotating rods (11).

5. The engineering cost drawing measuring ruler according to claim 1, characterized in that: A slide groove (19) is provided through and in the middle of the rear end of the inner wall of the through hole (3), and a slide bar (20) is fixedly connected to the rear ends of the two secondary rulers (4), and the two slide bars (20) are slidably connected to the slide groove (19).

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