Building material stretching detection device

Abstract

The utility model discloses a building material stretching detection device which comprises a machine body provided with a lifting mechanism; the number of the clamps is two; the clamp comprises a first clamping block, second clamping blocks, internal thread cylinders, a bidirectional screw and a fastening assembly, the second clamping blocks and the internal thread cylinders are arranged on the two sides of the first clamping block, a clamping space is formed between the first clamping block and the second clamping blocks, the internal thread cylinders are slidably inserted into the first clamping block, the bidirectional screw is rotationally arranged in the first clamping block, and the fastening assembly is arranged in the bidirectional screw. The two ends of the two-way screw are inserted into the inner threaded cylinders on the two sides of the first clamping block in a matched mode. By rotating the two-way screw, the internal thread cylinder can be driven to slide along the first clamping block, the width of the clamping space can be adjusted, and proper clamping force can be applied to the building material, so that the building material is prevented from being broken from the clamp during a tensile test, the number of times of re-mounting the building material for detection is reduced, and the tensile detection efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building material detection technical field, especially relate to a building material tensile testing device. BACKGROUND

[0002] When some flexible building materials are detected, the tensile detection project needs to be used to judge whether the tensile performance meets the design requirement. Generally, when the tensile testing machine is used to detect, the two ends of the flexible building material are fixed on a set of clamps, then the distance between the two sets of clamps is gradually increased by the tensile testing machine, the flexible building material is elongated to break under the tension, and the elongation and tension value of the flexible building material from the beginning of tension to the breaking process are measured. In the prior art, the clamp is mainly composed of two clamping plates, and the two clamping plates are fixed by bolt connection. When in use, the end of the flexible building material is placed between the two clamping plates, then the bolt is tightened, and the clamping force on the building material is controlled by manually controlling the tightening degree of the bolt.

[0003] In the actual operation process, in order to avoid the invalid detection result caused by the slippage of the flexible building material relative to the clamp, the detection personnel usually choose to apply a large clamping force to the flexible building material. However, when a large clamping force is applied to the flexible building material, the compression deformation of the flexible building material at the clamping plate is large, and the flexible building material is easy to break at the clamping plate during the stretching process. At this time, the detection result is still invalid, and the building material needs to be reinstalled and detected, which affects the detection efficiency. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a building material tensile testing device, which can improve the tensile detection efficiency of the flexible building material.

[0005] In order to achieve the above-mentioned purpose, a building material tensile testing device is provided, which comprises: a machine body provided with a lifting mechanism; a clamp arranged in two sets and oppositely arranged, and the two clamps are arranged on the top of the machine body and the lifting mechanism; the clamp comprises a first clamping block, a second clamping block, an internal thread cylinder, a bidirectional screw rod and a fastening assembly, the two sides of the first clamping block are provided with the second clamping block and the internal thread cylinder, a clamping space is formed between the first clamping block and the second clamping block, the internal thread cylinder is slidingly inserted into the first clamping block, the bidirectional screw rod is rotationally arranged in the first clamping block, and the two ends of the bidirectional screw rod are respectively inserted into the internal thread cylinders on the two sides of the first clamping block, the fastening assembly can drive the second clamping block to move towards the first clamping block, and when the second clamping block moves towards the first clamping block, the end of the internal thread cylinder abuts against the second clamping block; when the building material is installed on the clamp, the end of the building material is arranged around the first clamping block and between the first clamping block and the two second clamping blocks.

[0006] According to the building material tensile testing device, the side wall of the first clamping block is provided with an operation opening, and the side wall of the bidirectional screw rod is provided with a pushing strip.

[0007] According to the building material tensile testing device, the fastening assembly comprises a fastening bolt and a fastening nut, the bidirectional screw rod is provided with a sliding hole in the axial direction, the fastening bolt is slidably arranged in the second clamping block and the sliding hole, and the fastening nut is arranged on the side, away from the first clamping block, of the second clamping block and is sleeved on the fastening bolt.

[0008] According to the building material tensile testing device, the fastening assembly further comprises a spring member, the spring member is sleeved on the fastening bolt and is located between the inner threaded cylinder and the second clamping block, and the side, facing the first clamping block, of the second clamping block is provided with a containing groove capable of containing the spring member.

[0009] According to the building material tensile testing device, the width of the containing groove is smaller than the width of the inner threaded cylinder.

[0010] According to the building material tensile testing device, the top of the first clamping block is provided with a top block, and the top surface of the top block is in the shape of a circular arc.

[0011] According to the building material tensile testing device, the body and the lifting mechanism are both provided with sockets, the first clamping block is provided with an insertion piece, the insertion piece is inserted into the socket and is in sliding abutment with the inner side wall of the socket, and the side wall of the socket and the insertion piece are slidably provided with a bolt member.

[0012] According to the building material tensile testing device, the lifting mechanism comprises a lifting screw rod, a motor and a mounting table, the body is provided with two vertical columns, each of the two vertical columns is rotatably provided with a lifting screw rod, the bottom of each of the two lifting screw rods is provided with a belt wheel, and the two belt wheels are arranged around a synchronous belt, the motor is fixedly arranged on the body and is in transmission connection with one of the lifting screw rods, the mounting table is slidably arranged on the two vertical columns and is sleeved on the lifting screw rods, the top of the mounting table is provided with a tensile force sensor, and the top of the tensile force sensor is provided with a bearing table.

[0013] Beneficial effects: by rotating the bidirectional screw, the inner threaded cylinder can be driven to slide along the first clamp block, the length of the inner threaded cylinder extending out of the first clamp block is adjusted, since the inner threaded cylinder can abut against the second clamp block, the width of the clamping space can be adjusted according to the thickness and other properties of the building material to be tested, so that appropriate clamping force can be applied to the building material, the situation that the building material is broken from the clamp during tensile testing can be avoided, the number of times of reinstalling the building material for detection can be reduced, and the efficiency of the building material tensile testing is improved. In addition, the first clamp block and the two second clamp blocks provide clamping force for the building material, and the part of the first clamp block around the building material also provides friction resistance for the building material, so that the building material can be effectively clamped and positioned under the condition of small clamping force, and slipping of the building material relative to the clamp is avoided.

[0014] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 It is a front view of the present application embodiment.

[0017] Figure 2 It is Figure 1 A-A sectional view.

[0018] Figure 3 It is a side view of the clamp.

[0019] Figure 4 It is a structural schematic view of the building material installed on the clamp. DETAILED DESCRIPTION

[0020] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0021] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0022] In the description of the utility model, greater, less, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first, second are described, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0023] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing and connecting should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0024] Reference Figures 1-3 A building material tensile testing device, it includes machine body 10 and clamp 30, is provided with lifting mechanism 20 on machine body 10, clamp 30 is arranged oppositely and is arranged as two groups, one clamp 30 is arranged at the top of machine body 10, and the other clamp 30 is arranged on lifting mechanism 20. Wherein, clamp 30 includes first clamping block 31, second clamping block 32, internal thread cylinder 33, bidirectional screw rod 34 and fastening assembly 35, both sides of first clamping block 31 are provided with second clamping block 32 and internal thread cylinder 33, and the clamping space 36 is formed between first clamping block 31 and second clamping block 32, internal thread cylinder 33 is slidingly inserted in first clamping block 31, bidirectional screw rod 34 is rotationally arranged in first clamping block 31, and the two ends of bidirectional screw rod 34 are respectively matched with the insertion of the internal thread cylinder 33 on the two sides of first clamping block 31, fastening assembly 35 can drive second clamping block 32 to move towards first clamping block 31, and when second clamping block 32 moves towards first clamping block 31, the end of internal thread cylinder 33 can abut against second clamping block 32. Wherein, the outer contour of the section of internal thread cylinder 33 inserted in first clamping block 31 is set as a prism to limit the rotation relative to first clamping block 31.

[0025] Before tensile test, the flexible building material needs to be installed on clamp 30, specifically, the end of flexible building material is wound around first clamping block 31 and placed between first clamping block 31 and two second clamping blocks 32 (i.e. the end of flexible building material is placed in the clamping space 36 on the two sides of first clamping block 31), and second clamping block 32 is moved towards first clamping block 31 by fastening assembly 35 to clamp the flexible building material by first clamping block 31 and second clamping block 32 (as shown in Figure 4 When testing, one of the clamps 30 is driven to move down by the lifting mechanism 20 to increase the distance between the two clamps 30 until the flexible building material is pulled off.

[0026] Wherein, the inner threaded cylinder 33 is driven to slide along the first clamp block 31 by rotating the bidirectional screw 34 to adjust the length of the inner threaded cylinder 33 extending out of the first clamp block 31, and since the inner threaded cylinder 33 can abut against the second clamp block 32, the width of the clamping space 36 can be adjusted according to the thickness and other properties of the building material to be tested, so that appropriate clamping force can be applied to the building material to avoid the building material from breaking at the clamp 30 during the tensile test, thereby reducing the number of times of re-installing the building material for testing and improving the efficiency of the building material tensile test.

[0027] In the embodiment, the side wall of the first clamp block 31 is provided with an operation opening 311, and the side wall of the bidirectional screw 34 is provided with a poking strip 341, and the poking strip 341 is arranged in the operation opening 311. Through the structure, the poking strip 341 is poked to drive the bidirectional screw 34 to rotate so as to adjust the inner threaded cylinder 33.

[0028] In the embodiment, the fastening assembly 35 includes a fastening bolt 351 and a fastening nut 352, and the bidirectional screw 34 is provided with a sliding hole 342 penetrating in the axial direction, the fastening bolt 351 is arranged in the sliding hole 342 and the second clamp block 32, and the fastening nut 352 is arranged on the side of the second clamp block 32 away from the first clamp block 31 and is sleeved on the fastening bolt 351. By tightening the fastening nut 352 relative to the fastening bolt 351, the first clamp block 31 and the second clamp block 32 can clamp the building material.

[0029] In the embodiment, the fastening assembly 35 further includes a spring member 353, which is sleeved on the fastening bolt 351 and located between the inner threaded cylinder 33 and the second clamp block 32, and the side of the second clamp block 32 facing the first clamp block 31 is provided with a receiving groove 321 capable of accommodating the spring member 353, and the end of the spring member 353 is inserted into the receiving groove 321. Before the fastening nut 352 is tightened relative to the fastening bolt 351, the spring member 353 can keep the second clamp block 32 away from the first clamp block 31 to facilitate the installation of the building material; when the fastening nut 352 is tightened relative to the fastening bolt 351, the spring member 353 is compressed back into the receiving groove 321.

[0030] Wherein, the width of the receiving groove 321 is smaller than the width of the inner threaded cylinder 33. In order to avoid the inner threaded cylinder 33 from pressing the spring member 353 when the fastening nut 352 is tightened relative to the fastening bolt 351, the position of the inner threaded cylinder 33 is ensured to be accurate and the clamping of the building material is stable.

[0031] Referring to Figure 3 and Figure 4The top of the first clamping block 31 is provided with a top block 313, and the top surface of the top block 313 is in an arc shape. When the building material is installed, the building material is arranged around the top block 313 and in contact with the top surface thereof, and the top surface of the top block 313 provides friction resistance for the building material. The arc-shaped top surface of the top block 313 can avoid the building material from being broken due to shearing force at the top of the first clamping block 31.

[0032] In the embodiment, the body 10 and the lifting mechanism 20 are both provided with the socket 41, the first clamping block 31 is provided with the insertion piece 312, the insertion piece 312 is inserted into the socket 41 and in sliding abutment with the inner side wall of the socket 41, and the side wall of the socket 41 and the insertion piece 312 are slidingly provided with the bolt 42. Through the structure, the clamp 30 can be installed on the body 10 and the lifting mechanism 20.

[0033] The width of the inner cavity of the socket 41 is adapted to the insertion piece 312, so that the outer side wall and the front and rear side walls of the insertion piece 312 are in sliding abutment with the inner side wall of the socket 41, so as to avoid the rotation of the clamp 30 relative to the socket 41, and avoid the rotation of the clamp 30 to tilt and cause the edge of the building material at the connection position to be subjected to shearing force.

[0034] In the embodiment, the lifting mechanism 20 includes the lifting screw 21, the motor 22 and the mounting table 23, the body 10 has two vertical columns 11, the top of the two vertical columns 11 is connected with the cross beam 12, one of the sockets 41 is arranged at the bottom of the cross beam 12, one lifting screw 21 is rotatably arranged in each of the two vertical columns 11, the bottom of each of the two lifting screws 21 is provided with the pulley 24, the two pulleys 24 are arranged around the synchronous belt 25, the motor 22 is fixedly arranged on the body 10 and in transmission connection with one of the lifting screws 21, the mounting table 23 is slidingly arranged on the two vertical columns 11 and is in cooperation with the lifting screws 21, the top of the mounting table 23 is provided with the tension sensor 26, the top of the tension sensor 26 is provided with the bearing platform 27, and the other socket 41 is arranged on the bearing platform 27. When the motor 22 works, the two lifting screws 21 can be driven to rotate synchronously through the synchronous belt 25, so as to drive the mounting table 23 to ascend and descend.

[0035] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A building material tensile testing device, characterized by, The utility model relates to a building material clamping device, including: A machine body is provided with a lifting mechanism; Clamps are arranged oppositely in two groups and are arranged on the top of the machine body and the lifting mechanism; The clamp includes a first clamping block, a second clamping block, an internally threaded cylinder, a bidirectional screw rod and a fastening assembly, both sides of the first clamping block are provided with the second clamping block and the internally threaded cylinder, a clamping space is formed between the first clamping block and the second clamping block, the internally threaded cylinder is slidingly inserted into the first clamping block, the bidirectional screw rod is rotationally arranged in the first clamping block, both ends of the bidirectional screw rod are respectively inserted into the internally threaded cylinders on both sides of the first clamping block, and the fastening assembly can drive the second clamping block to move towards the first clamping block, and the end of the internally threaded cylinder is abutted against the second clamping block when the second clamping block moves towards the first clamping block. When the building material is clamped on the clamp, the end of the building material is arranged around the first clamping block and between the first clamping block and the two second clamping blocks.

2. The building material tensile testing device of claim 1, wherein An operation opening is formed in the side wall of the first clamping block, and a push bar is arranged on the side wall of the bidirectional screw rod and passes through the operation opening.

3. The building material tensile testing device of claim 1, wherein The fastening assembly includes a fastening bolt and a fastening nut, a sliding hole is formed in the bidirectional screw rod in the axial direction, the fastening bolt slidingly passes through the second clamping block and the sliding hole, and the fastening nut is located on the side of the second clamping block away from the first clamping block and is sleeved on the fastening bolt.

4. The building material tensile testing device of claim 3, wherein The fastening assembly further includes a spring member, the spring member is sleeved on the fastening bolt and located between the internally threaded cylinder and the second clamping block, and a containing groove is formed in the side of the second clamping block away from the first clamping block and can accommodate the spring member.

5. The building material tensile testing device of claim 4, wherein, The width of the containing groove is smaller than the width of the internally threaded cylinder.

6. The building material tensile testing device of any one of claims 1 to 5, wherein, A top block is arranged on the top of the first clamping block, and the top surface of the top block is in the shape of a circular arc.

7. The building material tensile testing device of any one of claims 1 to 5, wherein, A socket is arranged on the machine body and the lifting mechanism, an insertion piece is arranged on the first clamping block, the insertion piece is inserted into the socket and slidingly abuts against the inner side wall of the socket, and a bolt member slidingly passes through the side wall of the socket and the insertion piece.

8. The building material tensile testing device of claim 1, wherein, The lifting mechanism includes a lifting screw rod, a motor and a mounting table, the machine body has two vertical columns, a lifting screw rod is rotationally arranged in each of the two vertical columns, a belt wheel is arranged at the bottom of each of the two lifting screw rods, a synchronous belt is arranged around the two belt wheels, the motor is fixedly arranged on the machine body and is in transmission connection with one of the lifting screw rods, the mounting table is slidingly arranged on the two vertical columns and is sleeved on the lifting screw rods, a tension sensor is arranged on the top of the mounting table, and a bearing table is arranged on the top of the tension sensor.

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