Anchor bolt disc tension detection lower clamp device

Abstract

The utility model discloses a kind of anchor bolt disc tension detection lower clamp device, it is related to anchor bolt detection technical field.The utility model includes base, base top is fixedly connected with fixed sleeve, the spring is arranged in the inboard of fixed sleeve, the one end of spring is fixedly connected with clamp sleeve, the surface of clamp sleeve is fixedly connected with limit rod, the other end of limit rod is penetrated to the outside of fixed sleeve and is fixedly connected with driving ring.The utility model is driven by four jaw type clamping mechanism of spring, cooperate with the elastic clamping block of threaded groove, realize the self-adapting clamping in diameter tolerance range, multiple occlusion is formed by the threaded groove of clamping block inboard and anchor bolt external thread, when producing gradual self-locking effect in tension test, effectively prevent relative sliding in testing process, the precision guide system formed by four limit rods and limit slot, ensure that clamp sleeve is without deviation movement in vertical direction, avoid the influence of lateral component force to test data.

Description

Technical Field

[0001] This utility model belongs to the field of anchor bolt testing technology, and in particular relates to a clamping device for testing the tensile force of an anchor bolt disc. Background Technology

[0002] As a crucial connecting component in engineering structures, the accurate testing of the tensile strength of anchor bolts is essential for engineering safety. Traditional anchor bolt tensile testing fixtures mostly employ rigid clamping structures, which have revealed numerous shortcomings in practical use:

[0003] First, fixed clamping blocks are difficult to adapt to anchor bolts of different diameters, requiring frequent replacement of fittings and resulting in low testing efficiency. Second, insufficient contact area between the clamping surface and the anchor bolt can easily lead to stress concentration, causing the anchor bolt to slip off or the clamp to deform during testing, affecting the accuracy of test data. Furthermore, existing clamps mostly use threaded tightening fixing methods, requiring both hands to work together during operation, and there is a risk of thread seizing under high-pressure testing environments, making disassembly and assembly difficult.

[0004] To address these issues, we provide a clamping device for detecting the tensile force of an anchor bolt disc. Utility Model Content

[0005] The purpose of this utility model is to provide a clamping device for anchor bolt disc tension testing. By cooperating with the fixing sleeve and the clamping sleeve, it solves the problems of unstable anchor bolt clamping and cumbersome operation in the existing anchor bolt disc tension testing clamping device.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model is a clamping device for detecting the tensile force of an anchor bolt disc, including a base, a fixing sleeve fixedly connected to the top of the base, a spring provided inside the fixing sleeve, a clamping sleeve fixedly connected to one end of the spring, and a limit rod fixedly connected to the surface of the clamping sleeve.

[0008] The present invention is further configured such that the other end of the limiting rod extends through to the outside of the fixed sleeve and is fixedly connected to a driving ring. There are four limiting rods. The surface of the fixed sleeve is provided with a limiting groove that matches the limiting rod. The limiting rod and the groove cooperate to both restrict rotation and provide vertical guidance. The operator can control the movement of the four limiting rods simultaneously by pressing down the driving ring with one hand.

[0009] The present invention is further configured such that the clamp sleeve includes a fixing ring and a clamping block, wherein the fixing ring and the clamping block are integrally formed.

[0010] The present invention is further configured such that there are four clamping blocks arranged in a circumferential array, with gaps between the four clamping blocks, and threaded grooves are provided on the inner side of each of the four clamping blocks. The clamping blocks are arranged in a circumferential array, and the diameter of the clamping cavity formed by the four clamping blocks can be adaptively adjusted within a range, which is convenient for clamping and fixing anchor bolts of different diameters. The inner side is provided with threaded grooves, which are tightly engaged with the anchor bolts through thread self-locking to prevent slippage.

[0011] The present invention is further configured such that the cross-sectional shape of the fixing ring is I-shaped, and both the fixing ring and the clamping block are made of plastic material. The fixing ring has an I-shaped cross-section, and combined with the plastic material, the overall weight is reduced while ensuring strength, thereby reducing the influence of inertia on the test results.

[0012] The present invention is further configured such that the base surface has an installation hole, the fixing sleeve is sleeved on the outside of the clamp sleeve, one end of the spring is fixedly connected to the top of the base, the installation hole and the anchor bolt can be quickly fixed to the test bench, and the fixing sleeve and the clamp sleeve are fitted with a clearance to ensure smooth movement and no radial shaking.

[0013] The present invention has the following beneficial effects.

[0014] 1. This utility model uses a spring-driven four-jaw clamping mechanism in conjunction with an elastic clamping block with threaded grooves to achieve adaptive clamping within the diameter tolerance range. The threaded groove on the inner side of the clamping block forms multiple engagements with the external thread of the anchor bolt, generating a progressive self-locking effect during tensile testing, effectively preventing relative slippage during the test. The precision guiding system composed of four limit rods and limit grooves ensures that the clamp sleeve does not deviate in the vertical direction, avoiding the influence of lateral force on the test data.

[0015] 2. This utility model simplifies the traditional multi-step operation into a single action through the drive ring linkage mechanism: pressing down the drive ring releases the clamping space, and automatically resets and clamps after being released. With the guiding effect of the I-shaped fixing ring, the operator can complete the specimen clamping with one hand. The standardized mounting hole design of the base supports quick positioning and installation. The clamp sleeve adopts an integrated injection molding process, and a single clamping block can be replaced individually if damaged.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a perspective view of a clamping device for detecting the tensile force of an anchor bolt disc.

[0019] Figure 2 This is a cross-sectional view of a clamping device for detecting the tensile force of an anchor bolt disc.

[0020] Figure 3 This is a top-view perspective view of a clamping device for detecting the tensile force of an anchor bolt disc.

[0021] Figure 4 This is an exploded view of a clamping device for detecting the tensile force of an anchor bolt disc.

[0022] Figure 5 This is a diagram showing the fit between the clamp sleeve, the limiting rod, and the drive ring in a clamping device for detecting the tensile force of an anchor bolt disc.

[0023] In the attached diagram: 1. Base; 2. Fixing sleeve; 3. Spring; 4. Clamping sleeve; 41. Fixing ring; 42. Clamping block; 5. Limiting rod; 6. Drive ring; 7. Limiting groove; 8. Threaded groove; 9. Mounting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-5 This utility model is a clamping device for testing the tensile strength of an anchor bolt disc, including a base 1, a fixed sleeve 2 fixedly connected to the top of the base 1, a spring 3 provided inside the fixed sleeve 2, a clamping sleeve 4 fixedly connected to one end of the spring 3, a limiting rod 5 fixedly connected to the surface of the clamping sleeve 4, the other end of the limiting rod 5 passing through to the outside of the fixed sleeve 2 and fixedly connected to a driving ring 6, there are four limiting rods 5, and a limiting groove 7 adapted to the limiting rod 5 is opened on the surface of the fixed sleeve 2.

[0027] Further details: The fixed sleeve 2 is a cylindrical cavity. The spring 3 is set in the fixed sleeve 2 in a compressed state. Four limiting rods 5 are evenly distributed on the outer periphery of the clamp sleeve 4 at 90-degree intervals. The rods pass through the limiting grooves 7 opened on the side wall of the fixed sleeve 2 and are fixedly connected to the drive ring 6 at the end. This structure realizes the automatic reset of the clamping mechanism through the elastic restoring force of the spring 3. The limiting rods 5 cooperate with the groove to both restrict rotation and provide vertical guidance. The operator can control the movement of the four limiting rods 5 synchronously by pressing down the drive ring 6 with one hand.

[0028] Example 2

[0029] Please see Figures 1-5Based on embodiment 1, the clamp sleeve 4 includes a fixing ring 41 and a clamping block 42. The fixing ring 41 and the clamping block 42 are integrally formed. There are four clamping blocks 42 arranged in a circular array. There are gaps between the four clamping blocks 42, and threaded grooves 8 are opened on the inner side of each of the four clamping blocks 42. The fixing ring 41 has an I-shaped cross-section. Both the fixing ring 41 and the clamping block 42 are made of plastic. The base 1 has mounting holes 9 on its surface. The fixing sleeve 2 is sleeved on the outside of the clamp sleeve 4. One end of the spring 3 is fixedly connected to the top of the base 1.

[0030] Further details: The clamping blocks 42 are arranged in a circumferential array, and the diameter of the clamping cavity formed by the four clamping blocks 42 can be adaptively adjusted within a range, which is convenient for clamping and fixing anchor bolts of different diameters. The inner side is provided with a threaded groove 8, which is tightly engaged with the anchor bolt through thread self-locking to prevent slippage. The fixing ring 41 has an I-shaped cross section and is made of plastic material, which reduces the overall weight while ensuring strength and reducing the influence of inertia on the test results. Both the fixing ring 41 and the clamping blocks 42 are made of plastic material to ensure that the clamping blocks 42 have a certain deformation capacity, which is convenient for the insertion and removal of the anchor bolts. The mounting hole 9 can be quickly fixed to the test bench with the anchor bolt. The fixing sleeve 2 and the clamp sleeve 4 are clearance fit to ensure smooth movement and no radial shaking.

[0031] The working principle of this utility model is as follows: the mounting hole 9, in conjunction with the anchor bolt, can quickly fix the device to the test bench. Press down on the drive ring 6, and the drive ring 6 drives the clamp sleeve 4 to move down through the limit rod 5. The spring 3 is compressed and stores energy. Then, the anchor rod is placed in the center of the four clamping blocks 42. Release the drive ring 6, and the spring 3 drives the clamp sleeve 4 to move up. The four clamping blocks 42 are radially contracted by the inner wall of the conical fixing sleeve 2. The threaded groove 8 engages with the anchor rod. Start the tensile testing machine to perform the test. After the test is completed, press the drive ring 6 to release the radial limit of the four clamping blocks 42. Then, pull out the anchor rod to achieve disassembly. The operation is simple and the fixing effect is good.

[0032] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A clamping device for detecting the tensile force of an anchor bolt disc, comprising a base (1), characterized in that: A fixed sleeve (2) is fixedly connected to the top of the base (1). A spring (3) is provided inside the fixed sleeve (2). A clamp sleeve (4) is fixedly connected to one end of the spring (3). A limit rod (5) is fixedly connected to the surface of the clamp sleeve (4).

2. The anchor bolt disc tension detection clamp device according to claim 1, characterized in that: The other end of the limiting rod (5) extends through to the outside of the fixed sleeve (2) and is fixedly connected to a driving ring (6). There are four limiting rods (5). The surface of the fixed sleeve (2) is provided with a limiting groove (7) that is compatible with the limiting rod (5).

3. The anchor bolt disc tension detection clamp device according to claim 1, characterized in that: The clamp sleeve (4) includes a fixing ring (41) and a clamping block (42), which are integrally formed.

4. The anchor bolt disc tension detection clamp device according to claim 3, characterized in that: The number of clamping blocks (42) is four, and they are arranged in a circular array. There is a gap between the four clamping blocks (42), and threaded grooves (8) are opened on the inner side of each of the four clamping blocks (42).

5. The anchor bolt disc tension detection clamp device according to claim 3, characterized in that: The fixed ring (41) has an I-shaped cross-section, and both the fixed ring (41) and the clamping block (42) are made of plastic.

6. The anchor bolt disc tension detection clamp device according to claim 1, characterized in that: The base (1) has mounting holes (9) on its surface. The fixing sleeve (2) is fitted on the outside of the clamp sleeve (4). One end of the spring (3) is fixedly connected to the top of the base (1).

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