A detection ruler

Abstract

The utility model discloses a detection ruler relates to engineering surveying technical field, including lower ruler body, one end of lower ruler body is rotatively connected with upper ruler body, and the end part of upper ruler body is provided with locking groove, is provided with driving element in lower ruler body, and the end of driving element is slidably connected with locking head, and driving element can drive locking head and slide into or slide out locking groove, the lower ruler body still is equipped with guide block, and the side of locking head is close to guide block and has the inclination, when sliding into locking groove to locking head, guide block can make locking head and the lateral wall of locking groove abut. The device convenient operation, simple structure, through the up-and-down movement of driving element, can realize the locking and unlocking between upper ruler body and lower ruler body, is favorable to the detection ruler and keeps fixed when using.

Description

Technical Field

[0001] This utility model relates to the field of engineering measurement technology, specifically to a measuring ruler. Background Technology

[0002] In water conservancy projects, straightedges are tools used to inspect geometric shape, positional accuracy, and surface quality. Based on their function, they can be divided into different types such as leveling straightedges, vertical inspection straightedges, flatness straightedges, and slope straightedges. Their application spans the entire stage of engineering surveying, construction quality control, and final acceptance. They can perform multi-dimensional inspections on various key parts of the project, and their core function is to ensure the geometric shape accuracy, positional accuracy, and surface construction quality of the building.

[0003] For example, patent CN 221302122 U discloses a foldable portable construction inspection ruler, including a first ruler for flatness detection and a second ruler disposed at the top of the first ruler. The first and second rulers are detachable. A limiting component is provided on the same side of both the first and second rulers, and the limiting component is fixed to both the first and second rulers with screws, thus limiting their movement. However, this device still has the following problems: 1. When the two rulers of the rotating straightedge are joined together, the screws need to be frequently disassembled or loosened, which is a complicated operation. In addition, the screws are separate from the rulers and are easy to lose due to frequent disassembly. 2. After the two rulers are folded and stored, they cannot be properly fixed together. During the measurement process, the two rulers are prone to displacement, and the operator needs to hold both rulers at the same time, which makes the operation difficult. Utility Model Content

[0004] To address the problems existing in the prior art, a detection ruler is provided. This solves the issues raised in the background, such as the cumbersome connection process between the ruler bodies and the tendency for displacement to occur after the two ruler bodies are folded.

[0005] The technical solution adopted by this utility model to solve its technical problem is: This utility model proposes a measuring ruler, including a lower ruler body, one end of which is rotatably connected to an upper ruler body. The upper ruler body has a locking groove at its end. A driving member is provided inside the lower ruler body, and a locking head is slidably connected to the end of the driving member. The driving member can drive the locking head to slide into or out of the locking groove. A guide block is also provided on the lower ruler body. The side of the locking head near the guide block has an inclined surface. When the locking head slides into the locking groove, the guide block can cause the locking head to abut against the side wall of the locking groove.

[0006] Preferably, the driving component is a screw, and a knob is rotatably disposed inside the lower ruler body, with the screw and the knob connected by a thread.

[0007] Preferably, the circumferential sidewall of the knob has anti-slip texture or has several recessed holes.

[0008] Preferably, the driving component is a push rod, one side of which extends outward from the lower ruler to form a push block. The push rod is provided with a ratchet rack, and a plug that cooperates with the ratchet rack slides on the lower ruler. The plug is fixed to the lower ruler by a tension spring.

[0009] Preferably, the push rod also has a large slot, which is located at the upper end of the ratchet rack, and the height of the large slot is greater than the height of the push rod.

[0010] Preferably, the end of the lower ruler body that is rotatably connected to the upper ruler body is a rotating end, the rotating end of the lower ruler body is fixedly connected to a limiting plate, and the rotating end of the upper ruler body is provided with a limiting groove that cooperates with the limiting plate.

[0011] Preferably, one side of the limiting plate is recessed inward to form a trapezoidal groove, and one side of the limiting groove protrudes outward to form a trapezoidal block. The trapezoidal block and the trapezoidal groove are matched and have the same shape.

[0012] Preferably, a hook is slidably connected to the lower ruler body, and the hook body is connected to the lower ruler body by a compression spring. A groove is provided on the upper ruler body, and a fixing rod that cooperates with the hook body is fixed in the groove.

[0013] Preferably, the locking head has a chamfer on the side away from the guide block.

[0014] Preferably, a foot is installed on the same side of both the lower and upper rulers, and a level is installed on both the lower and upper rulers.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This application is provided with a locking head, which has an inclined surface on the side near the guide block. After the upper and lower scale bodies are connected, the driving component can drive the locking head to slide into the limiting groove of the upper scale body. At this time, the guide block causes the locking head to move horizontally, moving the locking head towards the side wall of the limiting groove until it abuts against the side wall of the limiting groove, thereby locking the upper and lower scale bodies together, which is beneficial for keeping the measuring scale fixed during use.

[0016] 2. The lower scale body of this application is provided with a hook body, and the upper scale body is fixed with a fixing rod. After the upper and lower scale bodies are folded, the hook body can cooperate with the fixing rod, thereby connecting and fixing the upper and lower scale bodies together, making the upper and lower scale bodies a whole, which is beneficial for measurement and carrying. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of the entire utility model (view). Figure 1 ); Figure 2 This is a perspective view of the entire utility model (view). Figure 2 ); Figure 3 This is a schematic diagram of the driving component of this utility model (Embodiment 1); Figure 4 This is a schematic diagram of the locking head locking mechanism of this utility model; Figure 5 This is a schematic diagram of the driving component of this utility model (Embodiment 2).

[0018] Explanation of reference numerals in the attached figures: 1. Lower scale body; 2. Upper scale body; 3. Locking groove; 4. Locking head; 5. Guide block; 6. Screw; 7. Knob; 8. Push rod; 9. Insert rod; 10. Tension spring; 11. Ratchet; 12. Large slot; 13. Limiting plate; 14. Limiting groove; 15. Hook; 16. Compression spring; 17. Fixing rod; 18. Foot; 19. Handle; 20. Dial. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example 1: refer to Figures 1-4 This embodiment proposes a measuring ruler, including a lower ruler body 1. Generally, a measuring mechanism is installed on the lower ruler body 1. The measuring mechanism has a dial 20 that can read measurement data. According to the type of measuring mechanism, the measuring ruler can be divided into mechanical rulers and electronic rulers. The measuring mechanisms and measuring principles of mechanical rulers and electronic rulers are all mature products that are already on the market, and will not be described in detail here.

[0021] One end of the lower ruler 1 is rotatably connected to the upper ruler 2. The upper ruler 2 and the lower ruler 1 are rotatably connected by a hinge. The end of the upper ruler 2 is provided with a locking groove 3. A driving component is provided inside the lower ruler 1. The end of the driving component is slidably connected to a locking head 4. The driving component can drive the locking head 4 to slide into or out of the locking groove 3. The lower ruler 1 is also provided with a guide block 5. The side of the locking head 4 near the guide block 5 has an inclined surface. When the locking head 4 slides into the locking groove 3, the guide block 5 can make the locking head 4 abut against the side wall of the locking groove 3.

[0022] Specifically, the guide block 5 is threadedly connected to the lower ruler body 1 by screws, which facilitates the replacement of the guide block 5 or the locking head 4 after wear.

[0023] Specifically, the lower body 1 has a space for accommodating the locking head 4. The width of this space is greater than the width of the locking groove 3, thus ensuring that the locking head 4 abuts against the inner wall of the locking groove 3 each time.

[0024] Specifically, when the locking head 4 slides into the locking groove 3, the guide block 5 gradually contacts the inclined surface of the locking head 4. Therefore, as the driving component drives the locking head 4 to continue moving, the guide block 5 drives the locking head 4 to gradually contact and abut against the inner wall of the locking groove 3, so that the upper scale body 2 and the locking head 4 press against each other to lock the upper scale body 2.

[0025] Furthermore, an anti-slip rubber pad can be added to the contact surface between the locking head 4 and the locking groove 3. The rubber pad can increase the friction between the locking head 4 and the locking groove 3, which is beneficial for further locking.

[0026] The driving component is a screw 6, and a knob 7 is rotatably installed inside the lower ruler body 1. The screw 6 and the knob 7 are connected by a thread.

[0027] The circumferential sidewall of knob 7 has anti-slip texture or several recessed holes.

[0028] Specifically, the anti-slip texture design increases friction, which helps to rotate knob 7.

[0029] The lower ruler 1 and the upper ruler 2 are rotatably connected at one end, which is the rotating end. The rotating end of the lower ruler 1 is fixedly connected to the limiting plate 13, and the rotating end of the upper ruler 2 is provided with a limiting groove 14 that cooperates with the limiting plate 13.

[0030] Specifically, when the locking head 4 and the upper scale body 2 are pressed together to achieve locking, the limiting groove 14 and the limiting plate 13 can also abut against each other, and the limiting plate 13 can guide the upper scale body 2, which helps to keep the upper scale body 2 in a vertical state.

[0031] One side of the limiting plate 13 is recessed inward to form a trapezoidal groove, and one side of the limiting groove 14 protrudes outward to form a trapezoidal block. The trapezoidal block and the trapezoidal groove are matched and their shapes are consistent.

[0032] Specifically, the combination of trapezoidal blocks and trapezoidal grooves helps to keep the lower scale body 1 and the upper scale body 2 fixed in the front-back direction. The front-back sides of the measuring scale are the commonly used sides during measurement, which helps to keep the lower scale body 1 and the upper scale body 2 flat after docking, reducing the occurrence of misalignment or warping.

[0033] Specifically, the side on which the foot 18 is installed on the lower scale body 1 and the upper scale body 2 is the rear side.

[0034] A hook 15 is slidably connected to the lower ruler 1. The hook 15 is connected to the lower ruler 1 via a compression spring 16. A groove is provided on the upper ruler 2, and a fixing rod 17 that cooperates with the hook 15 is fixed in the groove.

[0035] Specifically, the upper end of the hook 15 cooperates with the lower end of the drive component. After the lower scale 1 and the upper scale 2 are folded, the drive component moves downward, which drives the hook 15 to move downward, compressing the compression spring 16. The hook 15 gradually moves downward to one side of the fixing rod 17. At this time, the lower scale 1 and the upper scale 2 are locked by the hook 15 and the fixing rod 17, which is convenient for measurement and easy to carry.

[0036] The locking head 4 has a chamfer on the side away from the guide block 5.

[0037] Specifically, when the locking head 4 slides into the locking groove 3, the chamfer helps to guide the locking head 4 and reduces the occurrence of jamming.

[0038] Both the lower ruler 1 and the upper ruler 2 have feet 18 installed on the same side, and both the lower ruler 1 and the upper ruler 2 are equipped with a level.

[0039] Furthermore, both the lower scale body 1 and the upper scale body 2 are equipped with scale lines.

[0040] Furthermore, handles 19 are fixed on the lower scale body 1 and the upper scale body 2.

[0041] Example 2: refer to Figures 1-5 In this embodiment, the other structures are the same as in embodiment 1, except that the driving component takes a different form.

[0042] The driving component is a push rod 8. One side of the push rod 8 extends outward to form a push block on the lower scale body 1. The push rod 8 is machined with a ratchet rack 11. A plug rod 9 that cooperates with the ratchet rack 11 slides on the lower scale body 1. The plug rod 9 is fixed to the lower scale body 1 by a tension spring 10.

[0043] Specifically, when the push rod 8 drives the locking head 4 to move upward, the tension spring 10 drives the insert rod 9 to cooperate with the ratchet rack 11, which enables the push rod 8 to move in one direction. When it is necessary to reset, the insert rod 9 is pulled outward to disengage the insert rod 9 from the ratchet rack 11, thereby achieving the downward reset of the push rod 8.

[0044] The push rod 8 also has a large slot 12, which is located at the upper end of the ratchet rack, and the height of the large slot 12 is greater than the height of the push rod 9.

[0045] Specifically, when the insert rod 9 is pulled out and the push rod 8 slides downward, when the large slot 12 moves to the same height as the insert rod 9, the lower end of the push rod 8 drives the hook body 15 to move to the lowest end and cooperate with the fixing rod 17. At this time, the insert rod 9 is released, and the insert rod 9 slides into the large slot 12 under the action of the tension spring 10, locking the up and down sliding of the push rod 8.

[0046] Example 3: In this embodiment, the other structures are the same as in embodiment 1 or 2, except that a spring is provided between the driving member and the locking head 4.

[0047] Specifically, the spring can continuously provide elastic force to the locking head 4 after the locking head is locked, so that the locking head 4 remains in the locked state.

[0048] Specific working principle and usage process: The measuring ruler has a folding structure. Under the standard specifications, it is 1 meter long when folded and 2 meters long when unfolded. When used for 1-meter measurement, the measuring ruler is folded and used when used for 2-meter measurement. When the measuring scale is unfolded, the locking head 4 is first driven by the driving component to slide away from the interior of the lower scale body 1. As the driving component moves away from the hook body 15, the hook body 15 gradually moves upward under the action of the compression spring 16. The hook body 15 gradually moves above the fixed rod 17 and disengages from the fixed rod 17. At this time, the lower scale body 1 and the upper scale body 2 are unlocked and can rotate freely. Rotating the upper scale body 2 makes the upper scale body 2 align with the lower scale body 1, so that the limiting groove 14 and the limiting plate 13 abut against each other. At this time, the trapezoidal block and the trapezoidal groove will also cooperate to restrict the displacement of the lower scale body 1 and the upper scale body 2 in the front and back directions, so that the front and back directions of the lower scale body 1 and the upper scale body 2, that is, the two sides commonly used for measurement, remain flat. Continue driving the drive component, causing the drive component to slide the locking head 4 into the locking groove 3. At this time, the guide block 5 gradually contacts the inclined surface of the locking head 4. Therefore, as the drive component continues to drive the locking head 4, the guide block 5 will drive the locking head 4 to gradually contact and abut against the inner wall of the locking groove 3, so that the upper scale body 2 and the locking head 4 press against each other to lock the upper scale body 2, thereby keeping the lower scale body 1 and the upper scale body 2 in a relatively stable locked state.

[0049] This method allows for locking and unlocking between the upper and lower rulers simply by moving the drive unit up and down. It is easy to operate and, in conjunction with the trapezoidal block and trapezoidal groove, can achieve simultaneous locking in multiple directions. Furthermore, after the measuring ruler is folded, moving the drive unit to the bottom can also engage the hook with the fixing rod to lock the measuring ruler after folding, making it convenient for measurement and carrying when folded.

[0050] This measuring ruler is used for both construction process control and final acceptance. The main structures it is used for are: core structures of dams and gates, including dam seepage prevention walls and floodgate piers; cofferdams and foundation pit support structures, such as sheet pile cofferdams, cast-in-place piles, and diaphragm walls; and other auxiliary vertical components, including riverbank retaining walls and gate tracks.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A measuring ruler, comprising a lower ruler body (1), characterized in that, One end of the lower ruler (1) is rotatably connected to the upper ruler (2). The upper ruler (2) has a locking groove (3) at its end. A driving member is provided inside the lower ruler (1). The end of the driving member is slidably connected to a locking head (4). The driving member can drive the locking head (4) to slide into or out of the locking groove (3). A guide block (5) is also provided on the lower ruler (1). The side of the locking head (4) near the guide block (5) has an inclined surface. When the locking head (4) slides into the locking groove (3), the guide block (5) can make the locking head (4) abut against the side wall of the locking groove (3).

2. A measuring ruler according to claim 1, characterized in that, The driving component is a screw (6), and a knob (7) is rotatably provided inside the lower ruler body (1). The screw (6) and the knob (7) are connected by a thread.

3. A measuring ruler according to claim 2, characterized in that, The circumferential sidewall of the knob (7) has anti-slip texture or several recessed holes.

4. A measuring ruler according to claim 1, characterized in that, The driving component is a push rod (8). One side of the push rod (8) extends outward from the lower ruler body (1) to form a push block. A ratchet rack (11) is provided on the push rod (8). A plug rod (9) that cooperates with the ratchet rack (11) slides on the lower ruler body (1). The plug rod (9) is fixed to the lower ruler body (1) by a tension spring (10).

5. A measuring ruler according to claim 4, characterized in that, The push rod (8) is also provided with a large slot (12), which is located at the upper end of the ratchet rack, and the height of the large slot (12) is greater than the height of the insert rod (9).

6. A detection ruler according to claim 2 or 4, characterized in that, The lower ruler (1) is rotatably connected to the upper ruler (2) at one end, which is the rotating end. The rotating end of the lower ruler (1) is fixedly connected to the limiting plate (13), and the rotating end of the upper ruler (2) is provided with a limiting groove (14) that cooperates with the limiting plate (13).

7. A measuring ruler according to claim 6, characterized in that, One side of the limiting plate (13) is recessed inward to form a trapezoidal groove, and one side of the limiting groove (14) protrudes outward to form a trapezoidal block. The trapezoidal block and the trapezoidal groove are matched and have the same shape.

8. A measuring ruler according to claim 1, characterized in that, A hook (15) is slidably connected to the lower ruler (1). The hook (15) is connected to the lower ruler (1) through a compression spring (16). A groove is provided on the upper ruler (2), and a fixing rod (17) that cooperates with the hook (15) is fixed in the groove.

9. A measuring ruler according to claim 1, characterized in that, The locking head (4) has a chamfer on the side away from the guide block (5).

10. A measuring ruler according to claim 1, characterized in that, Both the lower ruler (1) and the upper ruler (2) are equipped with feet (18) on the same side, and both the lower ruler (1) and the upper ruler (2) are equipped with levels.

Images