Bearing capacity testing device

Abstract

The invention discloses a bearing capacity testing device, which is delicate in structure, easy in usage, low in cost, good in stability and can effectively guarantee no offset load force during the test. The bearing capacity testing device comprises a pedestal which is hollowed, a fixed pulley, a support and a pulling rope; the fixed pulley is hinged above the pedestal through the support; the middle portion of the pulling rope is wound on the fixed pulley; the bearing capacity testing device comprises a connection table, a driving device and a counterweight device. In the usage, the control of a transmission ratio between a driving gear and a slave gear enables a platform to perform flip-flop movement while performing linear movement, so that a pulling force arm fixedly connected to the top surface of the platform is tangent with the fixed pulley, which enables the measurement of the maximum pulling force of the pulling force arm to be more accurate.

Description

technical field [0001] The invention relates to the field of medical device testing equipment, in particular to the improvement of a special device used for bearing capacity testing. Background technique [0002] In the manufacturing process of medical devices, the last-minute safety inspection is an important guarantee for the reliability of the equipment in later use. In terms of tensile testing, most of the testing equipment such as the National Bureau published on May 21, 2014 called " As shown in the Chinese invention patent of "a lifting test device", the application number is: "201210437555.3", its action principle is: hang the test piece and the weight on both sides of the "fixed pulley", and the bottom surface of the test piece Then it is fixedly connected to the base, so as to determine the maximum pulling force of the test piece according to whether the test piece can hang the weight stably. [0003] However, the applicant found in actual production that because ...

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Problems solved by technology

[0003] However, the applicant found in actual production that because the lengths and sizes of the tension arms in the existing workpieces are inconsistent, the test device is usually equipped with only one set. platform (tangent to the fixed pulley, that is, the test piece is also tangent to the fixed pulley, so that there is no bias load when the test piece is measured), so that when measuring tension arms of different specifications, the position of the connecting platform can be adjusted to suit The length of the tension arm; among them, in order to save costs, the connection platform is usually welded on the top surface of the base, therefore, it is extremely inconvenient to change the position of the connection platform every time, and the angle position of the connection platform is also extremely inaccurate; it brings Solve problems such as cumbersome steps, high cost of use, long test cycle and inaccurate measurement data due to the existence of eccentric load force

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