Device for testing tearing strength of coiled material nail rod

Abstract

The utility model discloses a coiled material nail rod tearing strength testing device, which comprises a rack, a U-shaped block and a clamping mechanism, the U-shaped block is installed on the rack in a liftable mode, the clamping mechanism is located above the U-shaped block and is fixedly connected with the rack, the U-shaped block comprises a base and two parallel clamping plates installed on the base, and the clamping plates are fixedly connected with the base. Nail rod holes for containing nail rods are formed in the two clamping plates, and the distance between the two clamping plates is adjustable. According to the device for testing the tearing strength of the coiled material nail rod, the structure of the clamping plates of the U-shaped block is optimized, so that the distance between the two clamping plates is adjustable, the thickness test requirements of coiled materials with more specifications can be met, the detection range is larger, and the use flexibility is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to test equipment technical field especially relates to a kind of coiled material nail rod tear strength test device. BACKGROUND

[0002] In waterproofing membrane, generally need to detect its tear strength, nail rod method as standard detection method is universally applied. The principle of nail rod method is to use nail rod to pass through one end of coiled material sample, and the other end of coiled material is fixed using clamp, then exert force on coiled material, make coiled material tear around nail rod, measure force in tearing process, so as to obtain the tear strength of coiled material.

[0003] But in the process of nail rod method experiment, conventional test device also has some shortcomings, nail rod is generally limited by a U-shaped block, the two limiting arms of U-shaped block are provided with through hole for accommodating nail rod, and the distance between the two limiting arms of U-shaped block is fixed, which has certain requirement for the thickness of coiled material. If the thickness of coiled material is not within the measurement range, the model of U-shaped block needs to be replaced, and the flexibility of use is poor. In addition, nail rod is only limited by the through hole on U-shaped block, and the through hole is worn after long-term use. Nail rod is easy to slip out of the through hole under the influence of vibration, which directly affects the test result. At the same time, since nail rod is generally inserted and often buried in the through hole, the end part is exposed outside the through hole, which is very inconvenient to take out the nail rod after experiment.

[0004] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical scheme. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of coiled material nail rod tear strength test device, which can effectively prevent nail rod from slipping and has higher flexibility, wider detection range and more convenient nail rod access.

[0006] To solve the above technical problems, the utility model provides a kind of coiled material nail rod tear strength test device, and the specific technical scheme is as follows:

[0007] A kind of coiled material nail rod tear strength test device, including rack, U-shaped block and clamping mechanism, the U-shaped block is installed on rack and can be lifted, clamping mechanism is located above U-shaped block and is fixedly connected with base frame, the U-shaped block includes base and two mutually parallel clamping plates installed on base, two clamping plates are provided with nail rod hole for accommodating nail rod, and the distance between two clamping plates is adjustable, one clamping plate outside is equipped with limit cover, limit cover one end is hinged above nail rod hole, limit cover other end is detachably connected and fixed with clamping plate, limit cover and nail rod hole corresponding place protrude to clamping plate outside, and limit cover main cover is arranged outside nail rod hole.

[0008] Preferably, the top end of the base is provided with a sliding groove, a pair of sliding blocks are slidingly installed in the sliding groove, the bottom ends of the two clamping plates are fixedly connected with the two sliding blocks respectively, and a pair of fixed blocks are fixedly arranged at the two ends of the sliding groove respectively, a screw rod is threadedly connected in each fixed block, and the two screw rods are connected with the two sliding blocks respectively.

[0009] Preferably, a pulling piece is further installed on the U-shaped block, the pulling piece is detachably installed on the outer side of the clamping plate where the limiting cover is located, and the pulling piece is located between the clamping plate and the limiting cover, an avoiding hole adapted to the nail rod hole is formed in the center of the pulling piece, the nail rod comprises a main body with a pointed end at one end and a round head integrally connected to the end of the main body away from the pointed end, the main body of the nail rod is inserted into the nail rod hole through the avoiding hole, and the round head at the end of the nail rod is clamped between the pulling piece and the limiting cover.

[0010] Preferably, the pulling piece further comprises a handle part and a positioning hole, the handle part and the positioning hole are located on the two sides of the avoiding hole respectively, a positioning column is arranged on the outer side of the clamping plate close to the pulling piece, the positioning hole is adapted to the positioning column, and the handle part is a columnar protrusion extending to the outer side of the clamping plate.

[0011] Preferably, a limiting hole is further formed in the limiting cover, a limiting protrusion protruding outward and adapted to the limiting hole is fixedly arranged on the outer side of the clamping plate connected with the limiting cover, and the limiting protrusion is provided with an inverted buckle.

[0012] Preferably, the clamping mechanism comprises a pair of clamping arms capable of moving relative to each other, and a pressure sensor is installed on the clamping arm.

[0013] Preferably, a lifting table capable of lifting is installed on the rack, and the U-shaped block is fixedly installed on the lifting table.

[0014] The roll nail rod tearing strength test device has the following beneficial effects:

[0015] The roll nail rod tearing strength test device optimizes the clamping plate structure of the U-shaped block, adjusts the distance between the two clamping plates, meets the test requirements of more specifications of roll thickness, has a larger detection range and higher use flexibility, controls the nail rod by using the pulling piece and the limiting cover, ensures that the nail rod does not slip during the test process, and is more convenient to take the nail rod after the test is completed.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be understood by those skilled in the art through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 It is a coiled material nail rod tearing strength testing device;

[0019] Figure 2 It is Figure 1 The side view of the coiled material nail rod tearing strength testing device;

[0020] Figure 3 It is Figure 1 The sectional view of the U-shaped block;

[0021] Figure 4 It is Figure 1 The structural schematic view of the uncovering sheet.

[0022] Among them, 1- rack;11- lifting platform;2- U-shaped block;21- base;211- sliding groove;22- clamping plate;221- nail rod hole;222- limiting protrusion;23- sliding block;24- fixed block;25- screw;3- clamping mechanism;31- clamping arm;4- uncovering sheet;41- avoiding hole;42- handle part;43- positioning hole;5- limiting cover. DETAILED DESCRIPTION

[0023] The following will describe the embodiments of the present application in detail, the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application. EMBODIMENT

[0024] Please refer to Figures 1 to 4 , a coiled material nail rod tearing strength testing device, comprising a rack 1, a U-shaped block 2 and a clamping mechanism 3, the U-shaped block 2 is installed on the rack in a lifting manner, the clamping mechanism is located above the U-shaped block and is fixedly connected with the base frame, the U-shaped block comprises a base 21 and two mutually parallel clamping plates 22 installed on the base, nail rod holes 221 accommodating nail rods are formed on the two clamping plates, and the distance between the two clamping plates is adjustable, one side of one of the clamping plates is provided with a limiting cover 5, one end of the limiting cover is hinged above the nail rod hole, the other end of the limiting cover is detachably connected and fixed with the clamping plate, the limiting cover protrudes outward from the clamping plate at the position corresponding to the nail rod hole, and the main body of the limiting cover is arranged outside the nail rod hole.

[0025] The top end of the base 21 is provided with a sliding groove 211, a pair of sliding blocks 23 are slidingly installed in the sliding groove, the bottom ends of the two clamping plates are fixedly connected with the two sliding blocks respectively, a pair of fixed blocks 24 are fixedly arranged at the two ends of the sliding groove respectively, a screw rod 25 is threadedly connected in each fixed block, and the two screw rods are fixedly connected with the two sliding blocks respectively.

[0026] The U-shaped block 2 is further provided with a pulling piece 4, the pulling piece is detachably installed outside the clamping plate where the limiting cover is located, and the pulling piece is located between the clamping plate and the limiting cover, an avoiding hole 41 adapted to the nail rod hole is formed in the center of the pulling piece, the nail rod comprises a main body with a pointed end at one end and a round head integrally connected to the end of the main body away from the pointed end, the nail rod main body is inserted into the nail rod hole through the avoiding hole, and the round head at the end of the nail rod is clamped between the pulling piece and the limiting cover.

[0027] The pulling piece 4 further comprises a handle part 42 and a positioning hole 43, the handle part and the positioning hole are located on the two sides of the avoiding hole 41 respectively, a positioning column is arranged outside the clamping plate close to the pulling piece, the positioning hole is adapted to the positioning column, and the handle part is a columnar protrusion extending to the outside of the clamping plate.

[0028] The limiting cover 5 is further provided with a limiting hole, and the outside of the clamping plate connected with the limiting cover is fixedly provided with a limiting protrusion 222 protruding outward and adapted to the limiting hole, and the limiting protrusion is provided with an undercut.

[0029] The clamping mechanism 3 comprises a pair of clamping arms 31 capable of relative movement, and a pressure sensor is installed on the clamping arms.

[0030] The rack 1 is provided with a liftable lifting table 11, and the U-shaped block is fixedly installed on the lifting table.

[0031] In use, one end of the sample is clamped between the two clamping arms 31, the pressure sensor is used to ensure the balance of the real-time clamping force, the other end of the sample is placed between the two clamping plates of the U-shaped block, the distance between the two clamping plates is adjusted according to the thickness of the sample, the position of the pulling piece is adjusted after the limiting cover 5 is opened, the avoiding hole 41 is concentric with the nail rod hole, the nail rod is inserted, the nail rod main body penetrates the sample through the nail rod hole on the front clamping plate and is inserted into the nail rod hole on the rear clamping plate, the limiting cover is covered, the limiting cover is fixed through the limiting protrusion, and the limiting cover limits the nail rod to prevent slipping. When the nail rod needs to be taken out after the experiment is completed, the pulling piece is taken out through the handle part, the nail rod can be directly taken out because the avoiding hole has a smaller diameter than the round head of the nail rod, and the nail rod is collected.

[0032] The utility model discloses beneficial effect is: through to the clamping plate structure of U type block optimization makes two clamping plate spacing adjustable, can satisfy more specifications'strips thickness test requirement, and the detection range is bigger, and the use flexibility is also higher, in addition, utilize the control nail rod of uncovering piece and limit cover, guarantee that the nail rod test process will not produce the slippage, and it is also more convenient to take the nail rod after the test is completed.

[0033] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary, and cannot be understood as limiting the utility model, and the ordinary skilled person in the art can change, modify and transform the above-mentioned embodiments within the scope of the utility model.

Claims

1. A device for testing the nail pull strength of a web, characterized by: Including frame (1), U-shaped block (2) and clamping mechanism (3), the U-shaped block (2) is installed on the frame and can be lifted, the clamping mechanism is located above the U-shaped block and is fixedly connected with the base frame, the U-shaped block includes a base (21) and two mutually parallel clamping plates (22) installed on the base, the two clamping plates are provided with nail rod holes (221) for accommodating nail rods, and the distance between the two clamping plates is adjustable, one side of the clamping plate is provided with a limiting cover (5), one end of the limiting cover is hinged above the nail rod hole, the other end of the limiting cover is detachably connected and fixed with the clamping plate, the limiting cover is protruded outward from the clamping plate at the position corresponding to the nail rod hole, and the main body of the limiting cover is arranged outside the nail rod hole.

2. The web spike tensile strength testing apparatus of claim 1, wherein: The top end of the base (21) is provided with a sliding groove (211), a pair of sliding blocks (23) are slidably installed in the sliding groove, the bottom ends of the two clamping plates are fixedly connected with the two sliding blocks respectively, and a pair of fixed blocks (24) are fixedly arranged at the two ends of the sliding groove respectively, a screw rod (25) is threadedly connected in each fixed block, and the two screw rods are fixedly connected with the two sliding blocks respectively.

3. The web peg bar tear strength testing apparatus of claim 1, wherein: A taking sheet (4) is further installed on the U-shaped block (2), the taking sheet is detachably installed outside the clamping plate where the limiting cover is located, and the taking sheet is located between the clamping plate and the limiting cover, an avoiding hole (41) adapted to the nail rod hole is formed in the center of the taking sheet, the nail rod includes a main body with a pointed end and a round head integrally connected to the end of the main body away from the pointed end, the main body of the nail rod is inserted into the nail rod hole through the avoiding hole, and the round head at the end of the nail rod is clamped between the taking sheet and the limiting cover.

4. The web peg bar tear strength testing apparatus of claim 3, wherein: The taking sheet (4) further includes a handle part (42) and a positioning hole (43), the handle part and the positioning hole are located on the two sides of the avoiding hole (41) respectively, a positioning column is arranged outside the clamping plate close to the taking sheet, the positioning hole is adapted to the positioning column, and the handle part is a columnar protrusion extending outward from the clamping plate.

5. The web peg bar tear strength testing apparatus of claim 1 wherein: A limiting hole is further formed in the limiting cover (5), the clamping plate connected with the limiting cover is fixedly provided with a limiting protrusion (222) protruding outward and adapted to the limiting hole, and the limiting protrusion is provided with an inverted buckle.

6. The web peg bar tear strength testing apparatus of claim 1, wherein: The clamping mechanism (3) includes a pair of clamping arms (31) capable of moving relative to each other, and a pressure sensor is installed on the clamping arm.

7. The web peg bar tear strength testing apparatus of claim 1, wherein: A lifting table (11) capable of lifting is installed on the frame (1), and the U-shaped block is fixedly installed on the lifting table.

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