Concrete test block demolding damage prevention clamp

Abstract

The utility model discloses a concrete test block demoulding anti -damaging clamp, including support frame, movable frame and clamp, the support frame is composed by base and support rod, and the support rod is evenly distributed on the upper surface of base in ring shape, and the movable frame is movably arranged on the support rod, the clamp is arranged in the movable frame interior for clamping concrete test block mould, wherein, the movable frame includes main part, the main part is in ring shape, the outer circumferential surface of main part is movably connected with support rod through connecting block, and the inside of main part is coaxially equipped with annular cavity, the inner wall of annular cavity is equipped with the positioning pipe through, and the movable rod extending along the radial direction is movably arranged in the positioning pipe, the utility model discloses, be provided with base and support rod, and the support rod is connected with main part through connecting block, and the inner wall of main part is connected with clamp through movable rod, so the clamp is movable, and the concrete mould of different size is adapted, and the demoulding is realized through the control main part and moves up and down along the support rod.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a concrete test block demolding and damage prevention clamp. Background Technology

[0002] Cube test blocks, also known as concrete test blocks, reflect the construction quality of concrete structures. The compressive strength of concrete test blocks is a key indicator of the construction quality of concrete in a project, and the appropriateness of the test block preparation method and procedure is very important.

[0003] In the process of concrete specimen preparation, the demolding step is a critical step affecting the quality of the specimens. Traditional manual demolding methods have the following drawbacks: The test blocks are easily damaged: during demolding, impacts and knocks can cause micro-cracks inside the test blocks, reducing the accuracy of compressive / flexural strength testing. Inefficient: Manual operation is time-consuming, and old molds or molds with blocked vents are difficult to demold quickly; In existing technologies, although some demolding devices use mechanical structures to assist in demolding, they still have the following shortcomings: The fixtures have poor versatility and cannot adapt to trial molds of different sizes; To address this issue, a concrete test block demolding and damage prevention clamp is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a concrete test block demolding and damage prevention clamp to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a concrete test block demolding and damage prevention clamp, including a support frame, a movable frame, and a clamp. The support frame consists of a base and support rods, which are evenly distributed in a ring on the upper surface of the base. The movable frame is movably mounted on the support rods. The clamp is disposed inside the movable frame for clamping the concrete test block mold. The movable frame includes a main body, which is ring-shaped. The outer circumference of the main body is movably connected to the support rods through a connecting block. The main body has a coaxial annular cavity inside, and a positioning tube is provided through the inner wall of the annular cavity. Movable rods extending in the radial direction are movably mounted inside the positioning tubes. The clamp is fixedly connected to the end face of the movable rod.

[0006] According to the above technical solution, the clamp includes a clamp plate fixedly connected to the movable rod, and the bottom of the clamp plate is bent to form a limiting part.

[0007] According to the above technical solution, the movable rod is screwed with a screw rod, and the end of the screw rod away from the movable rod passes through the side wall of the annular cavity and is coaxially connected to a knob. The screw rod is coaxially connected to a gear, and a crown gear is rotatably provided inside the annular cavity. The gear meshes with the crown gear.

[0008] According to the above technical solution, the connecting block is coaxially connected to a connecting cylinder through a rubber sleeve, and the connecting cylinder is sleeved on the outer wall of the support rod and movably connected to the support rod.

[0009] According to the above technical solution, the base is provided with a base at the bottom, a drive rod is provided inside the support rod for rotation, a drive inclined surface is provided at the top of the drive rod, a strip-shaped through groove is provided on the outer wall of the support rod, a drive block that fits against the drive inclined surface is fixedly connected to the inner wall of the connecting cylinder at the corresponding strip-shaped through groove, an active gear is provided inside the base for rotation, and a driven gear that meshes with the active gear is coaxially connected to the lower end of the drive rod.

[0010] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model is equipped with a base and a support rod. The support rod is connected to the main body through a connecting block, and the inner wall of the main body is connected to the clamp through a movable rod. Therefore, the clamp is movable and can adapt to concrete molds of different sizes. Demolding is achieved by controlling the main body to move up and down along the support rod. This avoids the generation of micro-cracks inside the test block due to knocking and bumping during traditional demolding, which reduces the accuracy of compressive / flexural strength testing. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model; Figure 2 This is a top view cross-sectional structural diagram of Embodiment 1 of this utility model; Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention; Figure 4 This is a schematic diagram of the drive rod structure of Embodiment 2 of this utility model; Figure 5 This is a top view cross-sectional structural diagram of Embodiment 2 of this utility model; Figure 6 This is a top view cross-sectional structural diagram of the base of Embodiment 2 of this utility model; In the diagram: 1-base, 2-support rod, 3-main body, 4-connecting block, 5-annular cavity, 6-positioning tube, 7-moving rod, 8-clamping plate, 9-limiting part, 10-screw, 11-knob, 12-gear, 13-crown gear, 14-rubber sleeve, 15-connecting cylinder, 16-base, 17-drive rod, 18-drive inclined surface, 19-strip groove, 20-drive block, 21-drive gear, 22-driven gear. Detailed Implementation

[0012] 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.

[0013] Example 1 Please see Figures 1-2 This utility model provides a technical solution: a concrete test block demolding and damage prevention clamp, including a support frame, a movable frame, and clamps, such as... Figure 1 As shown, the support frame consists of a base 1 and support rods 2. The support rods 2 are vertically arranged and evenly distributed in a ring on the upper surface of the base 1. The movable frame is movably mounted on the support rods 2 and can move up and down along the support rods. The clamp is located inside the movable frame for clamping the concrete test block mold. The movable frame includes a main body 3, which is ring-shaped. The outer circumference of the main body 3 is movably connected to the support rods 2 via connecting blocks 4. Figure 2 As shown, the main body 3 has an annular cavity 5 coaxially arranged inside. The inner wall of the annular cavity 5 is provided with a positioning tube 6. The positioning tube 6 is provided with movable rods 7 extending in the radial direction. The clamp is fixedly connected to the end face of the movable rod 7. The movable rod 7 can move relative to the positioning tube 6, driving the clamp to move. Therefore, it can adapt to concrete molds of different sizes. The outer wall of the movable rod 7 is provided with a limiting groove extending in the same direction. The inner wall of the positioning tube 6 is provided with a limiting block that is slidably connected to the limiting groove, so that the movable rod 7 will not rotate relative to the positioning tube 6. Specifically, the clamp includes a clamping plate 8 fixedly connected to the movable rod 7, such as... Figure 1 As shown, the bottom of the clamping plate 8 is bent to form a limiting part 9. The clamping plate 8 and the limiting part 9 make the cross section of the clamp "L" shaped. The concrete test mold is located between the clamping plates 8. The limiting part 9 is attached to the lower surface of the concrete test mold. The clamping plate 8 needs to maintain a certain distance from the concrete test mold to facilitate the installation and removal of the concrete test mold. Specifically, the movable rod 7 is screwed with a screw 10. The end of the screw 10 away from the movable rod 7 passes through the side wall of the annular cavity 5 and is coaxially connected to a knob 11. The screw 10 is coaxially connected to a gear 12. A crown gear 13 is rotatably mounted inside the annular cavity 5. Figure 2As shown, the crown gear 13 is coaxially arranged with the annular cavity 5, and the gear 12 meshes with the crown gear 13. By rotating the knob 11, the screw 10 is rotated. Under the action of the threaded engagement, the movable rod 7 can be controlled to slide relative to the positioning tube 6, so as to drive the clamping plate 8 to move. During the rotation process, the crown gear 13 can also be driven to rotate under the action of the gear 12, so as to control the movable rod 7 to move synchronously and ensure the centering of the concrete test mold. A buffer pad is provided on the upper surface of the base 1. After the concrete test block falls off, it falls on the buffer pad to reduce the impact and avoid damage. Specifically, the connecting block 4 is coaxially connected to the connecting cylinder 15 through the rubber sleeve 14. The connecting cylinder 15 is sleeved on the outer wall of the support rod 2 and is movably connected to the support rod 2. Therefore, the connecting cylinder 15 and the connecting block 4 can move relative to each other to achieve buffering and avoid the impact from directly acting on the concrete test block and damaging the test block. When this utility model is in use, rotating the knob 11 drives the screw 10 to rotate. Under the action of the threaded engagement, the movable rod 7 can be controlled to slide relative to the positioning tube 6, thereby driving the clamping plate 8 to move. During the rotation process, the crown gear 13 can also be driven to rotate under the action of the gear 12, thereby controlling the movable rod 7 to move synchronously. The concrete test mold is placed between the clamping plates 8, with the bottom contacting the limiting part 9. The main body 3 is controlled to slide up and down, so that the concrete test block is separated from the test mold.

[0014] Example 2 Please see Figures 3-6 The difference between this embodiment and Embodiment 1 is that: The base 1 has a base 16 at its bottom, and the support rod 2 has a drive rod 17 inside for rotation, such as... Figure 4 As shown, the top of the drive rod 17 is provided with a drive ramp 18, and the outer wall of the support rod 2 is provided with a strip-shaped through groove 19. The strip-shaped through groove 19 is vertically arranged, and the inner wall of the connecting cylinder 15 is fixedly connected to a drive block 20 that fits against the drive ramp 18 at the corresponding position of the strip-shaped through groove 19. When the drive rod 17 rotates, under the action of the drive ramp 18, the drive block 20 moves upward along the strip-shaped through groove 19, thereby driving the main body 3 to move upward. When the drive block 20 moves to the top of the drive ramp 18, it falls rapidly, achieving vibration and causing the concrete test block to separate from the test mold. Figure 6 As shown, the moving base 16 has a rotating drive gear 21 inside, and the lower end of the drive rod 17 is coaxially connected to a driven gear 22 that meshes with the drive gear 21. The drive gear 21 is coaxially connected to a first bevel gear, and a motor is connected to the outer wall of the base 16. The motor is connected to a second bevel gear that meshes with the first bevel gear.

[0015] When the motor drives the drive gear 21 to rotate, it drives the driven gear 22 to rotate synchronously. The driven gear 22 drives the drive rod 17 to rotate. Under the action of the drive inclined surface 18, the drive block 20 moves upward along the strip through groove 19, thereby driving the main body 3 to move upward. When the drive block 20 moves to the top of the drive inclined surface 18, it falls rapidly. The main body 3 drives the concrete test mold to fall synchronously and generate vibration, causing the concrete test block to separate from the test mold. It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0016] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A concrete test block demolding and damage prevention clamp, comprising a support frame, a movable frame, and clamps, characterized in that: The support frame consists of a base (1) and a support rod (2). The support rod (2) is evenly distributed in a ring on the upper surface of the base (1). The movable frame is movably mounted on the support rod (2). The clamp is set inside the movable frame for clamping the concrete test block mold. The movable frame includes a main body (3). The main body (3) is ring-shaped. The outer circumference of the main body (3) is movably connected to the support rod (2) through a connecting block (4). The main body (3) has a coaxial annular cavity (5) inside. The inner wall of the annular cavity (5) is provided with a positioning tube (6). The positioning tube (6) is movably mounted with movable rods (7) extending in the radial direction inside. The clamp is fixedly connected to the end face of the movable rod (7).

2. The concrete test block demolding and damage prevention clamp according to claim 1, characterized in that: The clamp includes a clamping plate (8) fixedly connected to the movable rod (7), and the bottom of the clamping plate (8) is bent to form a limiting part (9).

3. The concrete test block demolding and damage prevention clamp according to claim 2, characterized in that: The movable rod (7) is screwed with a screw (10). The end of the screw (10) away from the movable rod (7) passes through the side wall of the annular cavity (5) and is coaxially connected to a knob (11). The screw (10) is coaxially connected to a gear (12). The annular cavity (5) is provided with a crown gear (13) for rotation. The gear (12) meshes with the crown gear (13).

4. A concrete test block demolding and damage prevention clamp according to claim 3, characterized in that: The connecting block (4) is coaxially connected to the connecting cylinder (15) through the rubber sleeve (14). The connecting cylinder (15) is sleeved on the outer wall of the support rod (2) and is movably connected to the support rod (2).

5. A concrete test block demolding and damage prevention clamp according to claim 4, characterized in that: The base (1) has a base (16) at its bottom, a drive rod (17) is rotatably provided inside the support rod (2), a drive ramp (18) is provided at the top of the drive rod (17), a strip groove (19) is provided on the outer wall of the support rod (2), a drive block (20) that fits against the drive ramp (18) is fixedly connected to the inner wall of the connecting cylinder (15) at the location corresponding to the strip groove (19), an active gear (21) is rotatably provided inside the base (16), and a driven gear (22) that meshes with the active gear (21) is coaxially connected to the lower end of the drive rod (17).

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