Concrete extracting device

Abstract

The utility model discloses a concrete extracting device which comprises a measuring rod and two half sampling containers which are oppositely arranged, the two half sampling containers are respectively hinged with the bottom end of the measuring rod, and a push-pull rod is movably arranged in the measuring rod in a penetrating mode. One end of the push-pull rod extends out of the top end of the measuring rod and is provided with a push-pull handle, the other end of the push-pull rod extends out of the bottom end of the measuring rod and is provided with a hinge seat, a connecting rod is hinged between the semi-sampling containers and the hinge seat, and the lifting action of the push-pull handle drives the two semi-sampling containers to open and close through the push-pull rod and the connecting rod. And an elastic piece is arranged between the measuring rod and the push-pull rod. The concrete extraction device improves the measurement accuracy, and is reasonable in structural design and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction devices, in particular to a concrete extraction device. Background Art

[0002] With the continuous development of infrastructure construction, the application of concrete piles is becoming more and more common in engineering fields such as bridge engineering, house construction, rail transit, municipal engineering, and power engineering. Generally, during the construction of bored concrete piles, the sediment at the bottom of the hole and the impurities in the mud will be deposited on the surface of the concrete as the concrete is poured, forming a certain thickness of floating slurry. This floating slurry has low strength and cannot meet the strength requirements of concrete. Therefore, in order to ensure the quality of the pile body concrete, over-pouring is adopted to ensure the quality of the concrete below the pile top. However, how to accurately control the height of over-pouring of concrete is a more difficult problem. If the height of over-pouring is large, although the quality of the pile body concrete is guaranteed, it is obviously uneconomical to waste materials and increase the construction difficulty for the subsequent removal of the pile head; if the height of over-pouring is not enough, the concrete strength of the pile body concrete entrained with floating slurry is insufficient, which affects the quality of the project. Controlling the height of over-pouring concrete is generally achieved by extracting concrete from a specified depth for quality testing. The concrete at the specified depth only needs to meet the quality requirements. Traditional concrete extraction and measurement uses a measuring rope to sense the position of the concrete surface. This measurement method has the following problems: the measuring rope is soft and the measured data is not accurate enough; the measuring rope plus a steel bar head or a measuring hammer is greatly affected by human experience and cannot be measured accurately.

[0003] The existing application number is 202320631701.X, which is a sample extraction device for measuring the height of underwater concrete pouring, including a sampling container, a sampling core, and a sampling pull rope, wherein the sampling container extends up and down, and forms a barrel cavity with upper and lower ends open and circumferentially closed inside, and the sampling core can be movably installed on the sampling container along the up and down direction, and the sampling core includes an upper core body that can close the bottom of the barrel cavity, and a lower core body located at the bottom of the upper core body for easy insertion of the sampling layer; the sampling pull rope includes a secondary rope that pulls the sampling core upward or downward, and a main rope that is hoisted on the sampling container and can be pulled upward or downward, wherein the secondary rope is pulled upward and the bottom of the sampling container is closed by the upper core body to form a sampling cavity. Sampling is performed by opening and closing the bottom of the sampling container with the sampling core, and the opening and closing of the sampling core are realized by the crane arm, the main and secondary ropes, and after being inserted into the concrete, it is difficult for the sampling core to open downward relative to the sampling container, which easily leads to unsuccessful sampling. In conclusion, the existing sample extraction device for underwater concrete pouring height measurement has unreasonable structural design and is inconvenient to operate. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a concrete extraction device which has improved measurement accuracy, reasonable structural design and convenient operation.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A concrete extraction device comprises a measuring rod and two relatively arranged half sampling containers, the two half sampling containers are respectively hinged to the bottom end of the measuring rod, a push-pull rod is movably inserted in the measuring rod, one end of the push-pull rod extends from the top end of the measuring rod and is provided with a push-pull handle, and the other end extends from the bottom end of the measuring rod and is provided with a hinged seat, a connecting rod is hinged between the half sampling containers and the hinged seat, and the lifting action of the push-pull handle drives the opening and closing action of the two half sampling containers through the push-pull rod and the connecting rod, and an elastic member is provided between the measuring rod and the push-pull rod.

[0007] As a further improvement of the above technical solution:

[0008] The lower part of the half sampling container is in a semi-conical shape with a larger upper part and a smaller lower part, and the upper part is in a semi-cylindrical shape.

[0009] A swing rod is fixed on the top of the semi-sampling container, and the swing rod is hinged to the bottom end of the measuring rod and to the hinge seat.

[0010] The measuring rod is cylindrical.

[0011] A U-shaped frame with an opening facing downward is provided at the bottom end of the measuring rod, the swing arms of the two half sampling containers are respectively hinged to the two sides of the opening of the U-shaped frame, and the push-pull rod is movably arranged in the bottom wall of the U-shaped frame.

[0012] A guide ring is arranged inside the measuring rod, and the push-pull rod is movably arranged in the guide ring.

[0013] Both ends of the measuring rod are provided with port rings, and the push-pull rod is movably arranged in the port rings.

[0014] The push-pull rod is provided with a limiting ring, the elastic member is a spring sleeved on the measuring rod, and the elastic member is located between the limiting ring and the port ring at the bottom end of the measuring rod.

[0015] An auxiliary handle is provided at the top of the measuring rod.

[0016] The auxiliary handle is in the shape of a ring with an opening on one side. The opening of the auxiliary handle is fixedly connected to the measuring rod, and the push-pull handle is located inside the auxiliary handle.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] The concrete extraction device of the utility model has the following using process: the measuring rod is vertically arranged, and the half sampling container is facing downward; the measuring rod is inserted downward into the concrete (in slurry state), until the half sampling container is located at the position to be extracted, the push-pull handle is pressed downward, so that the push-pull handle drives the push-pull rod to move downward, and the push-pull rod drives the two half sampling containers to swing through two connecting rods, until the lower ends of the two half sampling containers are opened outward; after staying for a predetermined time, the concrete to be tested is placed between the two half sampling containers; the downward pushing force on the push-pull handle is released or the upward pulling force is applied to the push-pull handle, so that the two half sampling containers swing back to the closed state; the measuring rod is pulled upward again, until the two closed half sampling containers are pulled out of the concrete; then, the push-pull handle is pushed downward again to open the two half sampling containers, and the extracted concrete to be tested is poured out for testing. The concrete extraction device, on the one hand, can keep the two half sampling containers in a closed state during the lowering and pulling process, so that only the concrete at the specified depth (the position to be taken) is taken, and the mixing of concrete at other depths to affect the measurement results is avoided, thereby improving the measurement accuracy. On the other hand, at the specified depth, the two half sampling containers can be opened by pressing down the push-pull handle, and there will be no situation where they cannot be opened. The structural design is reasonable and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main cross-section structure of the concrete extraction device of the utility model (two half sampling containers are closed).

[0020] Figure 2 It is a schematic diagram of the main cross-section structure of the concrete extraction device of the utility model (two half sampling containers are opened).

[0021] The symbols in the figure represent:

[0022] 1. Measuring rod; 11. U-shaped frame; 111. Bottom wall; 12. Guide ring; 13. Port ring; 2. Half sampling container; 21. Swing rod; 3. Push-pull rod; 4. Push-pull handle; 5. Articulated seat; 6. Connecting rod; 7. Elastic part; 8. Limiting ring; 9. Auxiliary handle. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Figure 1 and Figure 2 An embodiment of the concrete extraction device of the utility model is shown. The concrete extraction device of this embodiment comprises a measuring rod 1 and two oppositely arranged half sampling containers 2. The two half sampling containers 2 are respectively hinged to the bottom end of the measuring rod 1. A push-pull rod 3 is movably provided in the measuring rod 1. One end of the push-pull rod 3 extends from the top end of the measuring rod 1 and is provided with a push-pull handle 4, and the other end extends from the bottom end of the measuring rod 1 and is provided with a hinge seat 5. A connecting rod 6 is hinged between the half sampling container 2 and the hinge seat 5. The lifting and lowering action of the push-pull handle 4 drives the opening and closing action of the two half sampling containers 2 through the push-pull rod 3 and the connecting rod 6. An elastic member 7 is provided between the measuring rod 1 and the push-pull rod 3. In the initial state (before the concrete extraction device is inserted into concrete), the two half sampling containers 2 are in a closed state under the elastic force of the elastic member 7.

[0028] Usage process: the measuring rod 1 is set vertically, and the half sampling container 2 is facing downward; the measuring rod 1 is inserted downward into the concrete (slurry state) until the half sampling container 2 is located at the position to be taken, and the push-pull handle 4 is pressed down to make the push-pull handle 4 drive the push-pull rod 3 to move downward, and the push-pull rod 3 drives the two half sampling containers 2 to swing through the two connecting rods 6 until the lower ends of the two half sampling containers 2 are opened outward; after staying for a predetermined period of time, the concrete to be tested is placed between the two half sampling containers 2; the downward push force on the push-pull handle 4 is released or an upward pull force is applied to the push-pull handle 4 to make the two half sampling containers 2 swing back to the closed state; the measuring rod 1 is pulled up again until the two closed half sampling containers 2 are pulled out of the concrete; then, the push-pull handle 4 is pushed down again to open the two half sampling containers 2, and the taken out concrete to be tested is poured out for testing. The concrete extraction device, on the one hand, can keep the two half sampling containers 2 in a closed state during the lowering and pulling process, so that only the concrete at the specified depth (the position to be taken) is taken, and the mixing of concrete at other depths to affect the measurement results is avoided, thereby improving the measurement accuracy. On the other hand, at the specified depth, the two half sampling containers 2 can be opened by pressing down the push-pull handle 4, and there will be no situation where they cannot be opened. The structural design is reasonable and the operation is convenient.

[0029] Furthermore, in this embodiment, the lower part of the half sampling container 2 is in a semi-conical shape with a larger upper part and a smaller lower part, and the upper part is in a semi-cylindrical shape. The lower part of the half sampling container 2 is in a semi-conical shape with a larger upper part and a smaller lower part. On the one hand, it is easy to insert into concrete. On the other hand, during the insertion into concrete, the outer surface of the semi-conical shape is subjected to the reverse thrust of the concrete toward the center of the semi-conical shape, and this reverse thrust is conducive to keeping the two half sampling containers 2 in a closed state. Specifically, the openings of the two half sampling containers 2 are opposite to each other and are in a closed state when closed.

[0030] Furthermore, in this embodiment, a swing rod 21 is fixed to the top of the half sampling container 2, and the swing rod 21 is hinged to the bottom end of the measuring rod 1 and to the hinge seat 5. Specifically, the bottom end of the swing rod 21 is fixedly connected to the half sampling container 2, such as by welding, and the top end of the swing rod 21 is hinged to the hinge seat 5. The hinge points of the two swing rods 21 and the hinge seat 5 are respectively located at the two ends of the hinge seat 5. The two swing rods 21 swing around the hinge points with the measuring rod 1, thereby driving the two half sampling containers 2 to swing to open and close.

[0031] Furthermore, in this embodiment, the measuring rod 1 is cylindrical, which is convenient for insertion into concrete and for arranging the push-pull rod 3 .

[0032] Furthermore, in this embodiment, a U-shaped frame 11 (in a U shape) with an opening facing downward (the side away from the push-pull handle 4) is provided at the bottom end of the measuring rod 1, and the swing rods 21 of the two half sampling containers 2 are respectively hinged to the two sides of the opening of the U-shaped frame 11, and the push-pull rod 3 is movably arranged in the bottom wall 111 of the U-shaped frame 11. Specifically, the swing rod 21 is hinged to the U-shaped frame 11 at the middle position between the two ends, and the hinge seat 5 is fixedly connected to the push-pull rod 3 and is located in the U-shaped frame 11.

[0033] Furthermore, in the present embodiment, a guide ring 12 is provided inside the measuring rod 1 , and the push-pull rod 3 is movably inserted into the guide ring 12 .

[0034] Furthermore, in this embodiment, both ends of the measuring rod 1 are provided with a port ring 13, and the push-pull rod 3 is movably arranged in the port ring 13. Both ends of the measuring rod 1 are provided with a port ring 13, which is conducive to preventing external impurities from entering the interior, especially in the process of inserting concrete, which is conducive to preventing concrete from entering the measuring rod 1 through the lower port of the measuring rod 1, thereby protecting the internal components of the measuring rod 1. Preferably, the inner diameter of the port ring 13 is close to or the same as the outer diameter of the corresponding part of the push-pull rod 3.

[0035] Furthermore, in this embodiment, a limit ring 8 is provided on the push-pull rod 3, and the elastic member 7 is a spring sleeved on the measuring rod 1, and the elastic member 7 is located between the limit ring 8 and the port ring 13 at the bottom end of the measuring rod 1. Specifically, the limit ring 8 is located inside the measuring rod 1 and is fixed to the push-pull rod 3 as a whole. When the push-pull rod 3 is pushed down, the limit ring 8 presses down the elastic member 7, so that the elastic member 7 is compressed between the limit ring 8 and the port ring 13 at the bottom end of the measuring rod 1. When the push-pull handle 4 is not subjected to external force, the compressed elastic force causes the push-pull rod 3 to rise and reset, thereby closing the two half sampling containers 2. Of course, if the two half sampling containers 2 cannot be closed due to the resistance of concrete, an upward pulling force can be applied to the push-pull handle 4 to achieve the closure of the two half sampling containers 2.

[0036] Furthermore, in this embodiment, an auxiliary handle 9 is provided at the top of the measuring rod 1 to facilitate two-hand operation, that is, one hand holds the auxiliary handle 9 to control the position of the measuring rod 1, and the other hand holds the push-pull handle 4 to control the opening and closing of the two half sampling containers 2.

[0037] Furthermore, in the present embodiment, the auxiliary handle 9 is in the shape of a ring with an opening on one side, the opening of the auxiliary handle 9 is fixedly connected to the measuring rod 1 , and the push-pull handle 4 is located inside the auxiliary handle 9 .

[0038] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A concrete extraction device, characterized in that: The invention comprises a measuring rod (1) and two oppositely arranged half-sampling containers (2), wherein the two half-sampling containers (2) are respectively hinged to the bottom end of the measuring rod (1), a push-pull rod (3) is movably provided in the measuring rod (1), one end of the push-pull rod (3) extends from the top end of the measuring rod (1) and is provided with a push-pull handle (4), and the other end extends from the bottom end of the measuring rod (1) and is provided with a hinge seat (5), a connecting rod (6) is hinged between the half-sampling container (2) and the hinge seat (5), and the lifting action of the push-pull handle (4) drives the opening and closing action of the two half-sampling containers (2) through the push-pull rod (3) and the connecting rod (6), and an elastic member (7) is provided between the measuring rod (1) and the push-pull rod (3).

2. The concrete extraction device according to claim 1, characterized in that: The lower part of the half sampling container (2) is in the shape of a semi-cone with a larger upper part and a smaller lower part, and the upper part is in the shape of a semi-cylinder.

3. The concrete extraction device according to claim 1, characterized in that: A swing rod (21) is fixed to the top end of the semi-sampling container (2), and the swing rod (21) is hinged to the bottom end of the measuring rod (1) and to the hinge seat (5).

4. The concrete extraction device according to claim 3, characterized in that: The measuring rod (1) is cylindrical.

5. The concrete extraction device according to claim 4, characterized in that: A U-shaped frame (11) with an opening facing downward is provided at the bottom end of the measuring rod (1), the swing arms (21) of the two half sampling containers (2) are respectively hinged to the two sides of the opening of the U-shaped frame (11), and the push-pull rod (3) is movably arranged in the bottom wall (111) of the U-shaped frame (11).

6. The concrete extraction device according to claim 5, characterized in that: A guide ring (12) is provided inside the measuring rod (1), and the push-pull rod (3) is movably inserted into the guide ring (12).

7. The concrete extraction device according to claim 6, characterized in that: Both ends of the measuring rod (1) are provided with port rings (13), and the push-pull rod (3) is movably inserted into the port rings (13).

8. The concrete extraction device according to claim 7, characterized in that: The push-pull rod (3) is provided with a limit ring (8), the elastic member (7) is a spring sleeved on the measuring rod (1), and the elastic member (7) is located between the limit ring (8) and the port ring (13) at the bottom end of the measuring rod (1).

9. The concrete extraction device according to any one of claims 1 to 8, characterized in that: An auxiliary handle (9) is provided at the top end of the measuring rod (1).

10. The concrete extraction device according to claim 9, characterized in that: The auxiliary handle (9) is in the shape of a ring with an opening on one side. The opening of the auxiliary handle (9) is fixedly connected to the measuring rod (1). The push-pull handle (4) is located inside the auxiliary handle (9).

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