Measuring rod for measuring pouring height of underwater concrete

Abstract

The utility model discloses a measuring rod for measuring the pouring height of underwater concrete, which comprises a fixed rod, the bottom end of the fixed rod is in threaded connection with a sinking net, the fixed rod is internally provided with a rod body telescopic structure convenient for measuring concrete with different thicknesses, the fixed rod is sleeved with a floating plate, and the floating plate is provided with a connecting rod. A self-sealing structure for reducing concrete overflowing into the upper part of the floating plate is arranged at the connecting position of the floating plate and the fixed rod; according to the utility model, the rod body telescopic structure, the top telescopic rod and the middle telescopic rod adopt the design that the fixing rings are matched with the clamping grooves, the length of the measuring rod can be flexibly adjusted according to the thickness of concrete, different engineering requirements can be met without replacing equipment, and the measuring flexibility and the application range are greatly improved. The concrete height can be quickly read from multiple angles by matching the symmetrical scale design with equal-difference increasing scales, the guide groove of the limiting structure restrains the scale to vertically slide, the reading is more convenient compared with the scale on the surface of the measuring rod, and the reading efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of concrete pouring technology, specifically a measuring rod for measuring the height of underwater concrete pouring. Background Technology

[0002] During concrete pouring, a measuring rod is a commonly used tool, primarily used to measure the thickness of the poured concrete, check parameters such as pouring depth or slump, to ensure that the construction quality meets design requirements. By inserting the measuring rod into the concrete, the vertical depth from the surface to the bottom layer is measured to ensure that the structural thickness meets the design specifications.

[0003] Some measuring rods can help determine the slump of concrete, i.e., its fluidity, and indirectly reflect the workability of the concrete. The measurement principle is that after the volume of underwater concrete poured reaches the design volume, the measuring rod is slowly lowered into the water. Based on the change in resistance encountered by the measuring rod, it is determined whether the measuring rod has approximately reached the position where the concrete was poured.

[0004] Currently used measuring rods are usually fixed rods. A search revealed a portable measuring rod device for measuring the elevation of underwater concrete pouring in patent application publication number CN214583186U. The device includes a first measuring rod with a base fixedly connected to its lower end. A mounting groove is provided on one side of the upper end of the first measuring rod, and a fixed shaft is fixedly connected to the inner walls of both sides of the upper end of the mounting groove. A second measuring rod is provided at the upper end of the first measuring rod, and a through hole is provided at the lower end of the second measuring rod. The fixed shaft passes through the through hole and is rotatably connected to the second measuring rod. A semi-circular mounting groove is provided on one side of the upper end of the first measuring rod, and a fixed shaft is provided inside the upper end of the mounting groove. The second measuring rod is rotatably connected to the upper end of the first measuring rod through the fixed shaft.

[0005] This device makes the measuring rod easy to carry by setting it to an adjustable length, thus making it suitable for measuring the elevation of underwater concrete pouring at various depths. However, when measuring the vertical depth from the surface to the bottom layer, the measuring rod is not easy to read quickly, which affects the measurement efficiency when multiple measurements are required. Utility Model Content

[0006] The purpose of this invention is to provide a measuring rod for measuring the height of underwater concrete pouring. By setting a float and a scale above the float, the float floats up when measuring the concrete thickness, and the reading is taken from the top of the measuring rod through the scale, thus improving the reading efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a measuring rod for measuring the height of underwater concrete pouring, comprising a fixed rod, a sinking net threadedly connected to the bottom end of the fixed rod, a rod telescopic structure for facilitating measurement of concrete of different thicknesses provided inside the fixed rod, a float plate sleeved on the outside of the fixed rod, a self-sealing structure for reducing concrete overflow above the float plate provided at the connection position between the float plate and the fixed rod, a scale for quick reading fixed on the upper surface of the float plate, and a limiting structure for limiting the scale at the top of the rod telescopic structure.

[0008] Preferably, the self-closing structure includes a closing plate, a through groove for a fixing rod to pass through in the middle of the floating plate, a connecting ring fixed in the through groove by screws, a sliding groove for the closing plate to slide on the inner wall of the inner ring of the connecting ring, an ejector spring fixed in the sliding groove, and one end of the ejector spring fixedly connected to the closing plate.

[0009] Preferably, the float plate is arranged in a ring, and there are two sets of closing plates arranged symmetrically, with the closing plates arranged in a semi-ring shape.

[0010] Preferably, the limiting structure includes a limiting plate, both ends of which are provided with guide grooves, and the scale is inserted into the guide grooves and slidably connected with the guide grooves;

[0011] The scale is provided in two sets, and the scale values ​​on one side of the scale are set to increase at equal arithmetic progressions from the limiting plate to the floating plate.

[0012] Preferably, the cross-section of the sinking net is annular, the longitudinal section of the sinking net is frustum-shaped, and the fixing rod is fixed at the center of the sinking net.

[0013] Preferably, the telescopic rod structure includes a top telescopic rod and a middle telescopic rod. A fixing ring is fixed to the outer wall of one end of the top telescopic rod and the outer wall of one end of the middle telescopic rod. A convex ring is fixed to the inner cavity of the top end of the fixing rod and the inner cavity of the top end of the middle telescopic rod. A slot is opened in the middle of the top end of the fixing rod and the middle of the top end of the middle telescopic rod. A slot is formed between the convex ring and the slot for the convex ring to be engaged.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a telescopic rod structure, with the top telescopic rod and the middle telescopic rod designed with a fixed ring and a slot, which allows for flexible adjustment of the measuring rod length according to the concrete thickness. It can adapt to different engineering needs without changing the equipment, greatly improving the measurement flexibility and applicability.

[0016] 2. The symmetrical scale design, combined with the arithmetic progression, allows for rapid reading of concrete height from multiple angles. The guide groove of the limiting structure constrains the vertical sliding of the scale, preventing deviation and enabling intuitive measurement with the scale displaying the height of the floating plate simultaneously. Reading the scale from the top of the measuring rod is more convenient than reading the scale on the surface of the measuring rod, thus improving reading efficiency. Attached Figure Description

[0017] Figure 1 This is an isometric drawing of this utility model;

[0018] Figure 2 This is a schematic diagram showing the position of the closed plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the self-closing structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the telescopic rod structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the limiting plate of this utility model.

[0022] In the diagram: 1. Fixed rod; 2. Sinking net; 3. Rod telescopic structure; 4. Float; 5. Self-closing structure; 6. Scale; 7. Limiting structure; 501. Closing plate; 502. Through groove; 503. Connecting ring; 504. Slide groove; 505. Push-out spring; 701. Limiting plate; 702. Guide groove; 301. Top telescopic rod; 302. Middle telescopic rod; 303. Fixed ring; 304. Protruding ring; 305. Slot; 306. Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5This utility model provides a technical solution: a measuring rod for measuring the height of underwater concrete pouring, including a fixed rod 1, a sinking net 2 threadedly connected to the bottom end of the fixed rod 1, a rod telescopic structure 3 for facilitating the measurement of concrete of different thicknesses inside the fixed rod 1, a float 4 sleeved on the outside of the fixed rod 1, a self-sealing structure 5 for reducing concrete overflow above the float 4 at the connection position between the float 4 and the fixed rod 1, a scale 6 for quick reading fixed on the upper surface of the float 4, and a limiting structure 7 for limiting the scale 6 at the top of the rod telescopic structure 3.

[0025] By setting the limiting structure 7, the scale 6 is prevented from tilting or shifting.

[0026] The self-closing structure 5 includes a closing plate 501. The middle part of the float plate 4 has a through groove 502 for the fixing rod 1 to pass through. A connecting ring 503 is fixed in the through groove 502 by screws. The inner wall of the inner ring of the connecting ring 503 has a sliding groove 504 for the closing plate 501 to slide. A push-out spring 505 is fixed in the sliding groove 504. One end of the push-out spring 505 is fixedly connected to the closing plate 501.

[0027] The float plate 4 is arranged in a ring, and there are two sets of closing plates 501. The two sets of closing plates 501 are arranged symmetrically and are semi-circular.

[0028] When the float 4 moves upward, the two semi-circular closing plates 501 are pressed tightly against the outer wall of the fixed rod 1 by the push-out spring 505. As the float 4 rises, the closing plates 501 move to the outer wall of the middle telescopic rod 302, reducing the gap between the closing plates 501 and the middle telescopic rod 302. This reduces concrete spillage and ensures that the readings are not affected.

[0029] The limiting structure 7 includes a limiting plate 701, and guide grooves 702 are provided at both ends of the limiting plate 701. The scale 6 is inserted into the guide grooves 702 and is slidably connected to the guide grooves 702.

[0030] The scale 6 is provided in two sets, and the scale values ​​on one side of the scale 6 are set to increase at equal arithmetic progression from the limiting plate 701 to the floating plate 4.

[0031] The limiting plate 701 constrains the vertical movement trajectory of the two sets of scales 6 through the guide groove 702, preventing tilting or deviation. The scales of the two sets of scales 6 increase arithmetically from the limiting plate 701 towards the floating plate 4. As the floating plate 4 rises with the concrete, the scales 6 move upward synchronously, and the operator can directly read the scale value when the scales 6 are aligned with the limiting plate 701. The concrete pouring elevation is the height between the lowest point of the bottom of the sinking net 2 and the lower surface of the floating plate 4. When the floating plate 4 is close to the highest point of the sinking net 2, the scale of the scales 6 at the lower surface of the limiting plate 701 is set to the height of the sinking net 2. For example, if the height of the sinking net 2 is 10cm, the scale at the contact point between the scales 6 and the lower surface of the limiting plate 701 is 10cm. As the floating plate 4 moves upward, the scale value at the contact point between the scales 6 and the lower surface of the limiting plate 701 gradually increases, and the elevation can be directly read from the scale at this contact point.

[0032] The sunken net 2 has a ring-shaped cross-section and an inverted frustum-shaped longitudinal section. The fixing rod 1 is fixed at the center of the sunken net 2.

[0033] The submerged net 2 increases the contact area with the underwater foundation through its inverted frustum-shaped bottom structure. Its annular distribution reduces insertion resistance and prevents lateral displacement of the measuring rod. The threaded connection allows for the disassembly and replacement of the submerged net 2 to adapt to different foundation conditions. During pouring, concrete is evenly filled through the mesh, preventing localized accumulation that could cause the measuring rod to tilt.

[0034] The telescopic rod structure 3 includes a top telescopic rod 301 and a middle telescopic rod 302. A fixing ring 303 is fixed to the outer wall of one end of the top telescopic rod 301 and the outer wall of one end of the middle telescopic rod 302. A convex ring 304 is fixed to the inner cavity of the top end of the fixing rod 1 and the inner cavity of the top end of the middle telescopic rod 302. A slot 305 is opened in the middle of the top end of the fixing rod 1 and the middle of the top end of the middle telescopic rod 302. A slot 306 is formed between the convex ring 304 and the slot 305 for the convex ring 304 to be inserted.

[0035] The top telescopic rod 301 and the middle telescopic rod 302 achieve multi-level locking through the cooperation of the convex ring 304 and the slot 306: during extension, the fixing ring 303 abuts against the convex ring 304, and the convex ring 304 is embedded in the slot 306 of the upper-level rod to form a rigid connection, extending the total length of the measuring rod step by step. This structure allows for flexible adjustment of the measuring rod height according to the designed thickness of the concrete.

[0036] In use, manually pull the top telescopic rod 301 and the middle telescopic rod 302 outward so that the protruding ring 304 at the bottom of the top telescopic rod 301 is locked in the slot 306 at the top of the middle telescopic rod 302, and the protruding ring 304 at the bottom of the middle telescopic rod 302 is locked in the slot 306 at the top of the fixed rod 1, thus achieving extension.

[0037] Holding the top telescopic rod 301, place the sinking net 2 at the point to be measured. Under the gravity of the sinking net 2, the fixing rod 1 sinks, and the float 4 floats above the concrete. When the float 4 rises, it moves the scale 6 upward. The scale 6 slides within the limiting groove. The concrete thickness can then be read by reading the scale at the point where the top of the scale 6 is flush with the limiting plate 701, which improves measurement efficiency. It is especially suitable for working environments that require multi-point measurements.

[0038] As the floating plate 4 rises, under the action of the ejector spring 505, the two semi-circular closing plates 501 adhere to the outer wall of the fixing rod 1. When the closing plates 501 move to the outer wall of the middle telescopic rod 302, the ejector spring 505 continues to push the closing plates 501 outward, reducing the gap between the closing plates 501 and the middle telescopic rod 302. This reduces concrete spillage and ensures that the readings are not affected. It should be noted that the elastic coefficient of the ejector spring 505 needs to be adjusted so that the closing plates 501 do not lock onto the outer wall of the fixing rod 1.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A measuring rod for measuring the height of underwater concrete pouring, characterized in that: The device includes a fixed rod (1), with a sinking net (2) threaded to the bottom end of the fixed rod (1). The fixed rod (1) is equipped with a rod telescopic structure (3) to facilitate the measurement of concrete of different thicknesses. A float plate (4) is sleeved on the outside of the fixed rod (1). A self-sealing structure (5) is provided at the connection position between the float plate (4) and the fixed rod (1) to reduce concrete overflow into the float plate (4). A scale (6) is fixed on the upper surface of the float plate (4) to facilitate quick reading. A limiting structure (7) is provided at the top of the rod telescopic structure (3) to limit the scale (6).

2. The measuring rod for measuring the height of underwater concrete pouring according to claim 1, characterized in that: The self-closing structure (5) includes a closing plate (501). The middle part of the float plate (4) has a through groove (502) through which the fixing rod (1) passes. A connecting ring (503) is fixed in the through groove (502) by screws. The inner wall of the inner ring of the connecting ring (503) has a sliding groove (504) for sliding connection of the closing plate (501). A push-out spring (505) is fixed in the sliding groove (504). One end of the push-out spring (505) is fixedly connected to the closing plate (501).

3. A measuring rod for measuring the height of underwater concrete pouring according to claim 2, characterized in that: The float (4) is arranged in a ring, and there are two sets of closing plates (501). The two sets of closing plates (501) are arranged symmetrically, and the closing plates (501) are arranged in a semi-ring shape.

4. A measuring rod for measuring the height of underwater concrete pouring according to claim 3, characterized in that: The limiting structure (7) includes a limiting plate (701), both ends of which are provided with guide grooves (702), and the scale (6) is inserted into the guide grooves (702) and slidably connected with the guide grooves (702); The scale (6) is provided in two sets, and the scale values ​​on one side of the scale (6) are set to increase at equal intervals from the limiting plate (701) to the float (4).

5. A measuring rod for measuring the height of underwater concrete pouring according to claim 1, characterized in that: The cross-section of the sunken net (2) is annular, and the longitudinal section of the sunken net (2) is frustum-shaped. The fixing rod (1) is fixed at the center of the sunken net (2).

6. A measuring rod for measuring the height of underwater concrete pouring according to claim 1, characterized in that: The telescopic structure (3) includes a top telescopic rod (301) and a middle telescopic rod (302). A fixing ring (303) is fixed to the outer wall of one end of the top telescopic rod (301) and the outer wall of one end of the middle telescopic rod (302). A convex ring (304) is fixed to the inner cavity of the top end of the fixing rod (1) and the inner cavity of the top end of the middle telescopic rod (302). A slot (305) is opened in the middle of the top end of the fixing rod (1) and the middle of the top end of the middle telescopic rod (302). A slot (306) is formed between the convex ring (304) and the slot (305) for the convex ring (304) to be inserted.

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