CN-224231518-U - Bending fatigue tester for building protective film

CN224231518UCN 224231518 UCN224231518 UCN 224231518UCN-224231518-U

Abstract

The utility model discloses a bending fatigue tester for a building protective film, which comprises a base, and a bending mechanism, a transmission mechanism and a driving mechanism which are arranged on the base, wherein the bending mechanism comprises a pair of strip-shaped clamping plates capable of swinging up and down in a reciprocating manner, the center positions of the clamping plates are rotationally connected with a rotating shaft, the rotating shaft is respectively arranged on the side surface of the base, the transmission mechanism comprises a main shaft, two groups of cranks respectively arranged at two ends of the main shaft, and two groups of connecting rods respectively connected with the cranks, the upper ends of the connecting rods are respectively connected to the eccentric positions of the clamping plates, and the cranks, the connecting rods and the clamping plates which are mutually connected respectively form two groups of crank rocker mechanisms. The utility model is used for carrying out bending fatigue test on the building protective film and determining whether various performance indexes still meet the requirements after the building protective film product is deformed along with bending torsion of the metal roof.

Inventors

WU SHENGJIANG
Lan shun
YA ZENGPAN
LU SHANQING

Assignees

西牛皮防水科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250425

Claims (3)

1. The bending fatigue tester for the building protective film is characterized by comprising a base, a bending mechanism, a transmission mechanism and a driving mechanism, wherein the bending mechanism, the transmission mechanism and the driving mechanism are arranged on the base; The bending mechanism comprises a pair of strip-shaped clamping plates capable of swinging up and down in a reciprocating manner, the center positions of the clamping plates are rotationally connected with a rotating shaft, and the rotating shafts are respectively arranged on the side surfaces of the base; The transmission mechanism comprises a main shaft, two groups of cranks respectively installed at two ends of the main shaft, and two groups of connecting rods respectively connected with the cranks, the upper ends of the connecting rods are respectively connected to the eccentric positions of the clamping plates, and the cranks, the connecting rods and the clamping plates which are mutually connected respectively form two groups of crank handle rocker mechanisms.
2. The bending fatigue tester for building protective films according to claim 1, wherein the clamping plate is mainly formed by connecting angle steel and a scraper clamp into an L-shaped whole through screws, the scraper clamp is mainly formed by connecting an upper clamping plate and a lower clamping plate through adjusting screws, the upper half part of the lower clamping plate is fixed with the angle steel through the screws, the upper clamping plate is connected with the lower half part of the lower clamping plate through the adjusting screws, and the upper clamping plate and the lower clamping plate form clamping grooves for clamping materials.
3. The bending fatigue tester for building protective films according to claim 2, wherein the cranks are provided with a main rotation axis and a secondary rotation axis, the main rotation axis is respectively connected to the tail ends of two ends of the main shaft, the secondary rotation axis is respectively in rotary connection with the lower ends of the connecting rods on the same side, and the mounting directions of the secondary rotation axes of the two cranks are opposite.

Description

Bending fatigue tester for building protective film Technical Field The utility model relates to a fatigue tester, in particular to a fatigue testing device for testing a building protective film. Background The building protection film is a film-shaped material paved on a metal roof, a large number of roofs of industrial park plants are adopted nowadays, the durability of the anticorrosive paint on the metal surface is insufficient, and the phenomena of later water seepage and the like are easily caused by corrosion of the metal surface for a long time, so that a layer of building protection film is adhered on the metal roof for playing the roles of preventing water and corrosion. Because the bending fatigue tester is required to be used for bending test of the building protective film product in order to simulate the process that the metal roof is lifted by strong wind in severe weather and continuously reciprocates up and down, the bending fatigue tester is specially used for determining whether various performance indexes of the building protective film product still meet requirements after the building protective film product is deformed along with bending torsion of the metal roof. Disclosure of utility model The utility model aims to solve the defects of the prior art and provides a bending fatigue tester for measuring the bending resistance of a building protective film. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The bending fatigue tester for the building protective film comprises a base, and a bending mechanism, a transmission mechanism and a driving mechanism which are arranged on the base; The bending mechanism comprises a pair of strip-shaped clamping plates capable of swinging up and down in a reciprocating manner, the center positions of the clamping plates are rotationally connected with a rotating shaft, and the rotating shafts are respectively arranged on the side surfaces of the base; The transmission mechanism comprises a main shaft, two groups of cranks respectively installed at two ends of the main shaft, and two groups of connecting rods respectively connected with the cranks, the upper ends of the connecting rods are respectively connected to the eccentric positions of the clamping plates, and the cranks, the connecting rods and the clamping plates which are mutually connected respectively form two groups of crank handle rocker mechanisms. The clamp plate is mainly formed by connecting angle steel and a scraper clamp into an L-shaped whole through screws, the scraper clamp is mainly formed by connecting an upper clamp plate and a lower clamp plate through adjusting screws, the upper half part of the lower clamp plate is fixed with the angle steel through the screws, the upper clamp plate is connected with the lower half part of the lower clamp plate through the adjusting screws, and the upper clamp plate and the lower clamp plate form clamping grooves for clamping materials. The crank is provided with a main rotation axis and a secondary rotation axis, the main rotation axis is respectively connected to the tail ends of the two ends of the main shaft, the secondary rotation axis is respectively connected with the lower ends of the connecting rods on the same side in a rotating way, and the installation directions of the secondary rotation axes of the two cranks are opposite. After the technical scheme is adopted, compared with the background technology, the utility model has the following advantages: the utility model is suitable for bending fatigue test of the building protective film, and determines whether various performance indexes still meet the requirements after the building protective film product is deformed along with bending torsion of the metal roof. Drawings FIG. 1 is a schematic diagram of the overall structure of the present utility model; FIG. 2 is an enlarged view of FIG. 1 at A; Detailed Description The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. Examples As shown in the schematic structural diagram of fig. 1, the utility model comprises a base 1, and a bending mechanism, a transmission mechanism and a driving mechanism which are arranged on the base 1. The base 1 is formed by connecting a bottom plate 11 and a plurality of side plates 12 to form an inner space for accommodating a transmission mechanism and a driving mechanism, and the upper half parts of the left side plate 12 and the right side plate 12 are respectively connected with a bending mechanism. The bending mechanism comprises a left strip-shaped clamping plate 2 and a right strip-shaped clamping plate 2 which