CN113820115A

CN113820115A - Double-shaft lifting lug fatigue performance testing device

Info

Publication number: CN113820115A
Application number: CN202111118847.6A
Authority: CN
Inventors: 赵宁; 杨小东; 张超; 王志远
Original assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Current assignee: Wuxi Weifu Lida Catalytic Converter Co Ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2021-12-21

Abstract

The invention discloses a double-shaft lug fatigue performance testing device, and aims to provide a testing device capable of effectively detecting lug fatigue performance.

Description

Double-shaft lifting lug fatigue performance testing device

Technical Field

The invention relates to the field of part detection devices, in particular to a double-shaft lug fatigue performance testing device.

Background

The lifting lug is used as a key part for connecting the cold end of the whole set of exhaust system with the vehicle body, and how to ensure the fatigue durability of the lifting lug under the complex use working condition of the vehicle is an important problem which is always concerned by the industry; at present, each big lug manufacturing enterprises, the Z that mostly only concerns the lug is to fatigue performance, when fatigue test, only considers the fatigue load that the lug received in vertical direction, sees according to whole car road spectrum data collection, and the lug still can receive not neglectable load around whole car, left and right directions, how to carry out multi-direction fatigue test loading to the lug simultaneously, is the difficult problem of industry fatigue test.

At present, chinese patent publication No. cn201610034937.x discloses a method for detecting safety performance of a lifting lug or a lifting pipe, comprising: step 1: integrally installing a loading device above a part to be tested, and adjusting the installation positions of a loading oil cylinder and a sensor suspension unit according to the distance between a lifting lug or a lifting pipe; step 2: the two tension sensors are upwards correspondingly connected with the sensor suspension unit, each tension sensor is downwards correspondingly connected with a lifting lug or a lifting pipe to be tested through a connecting piece, and a stress-strain testing unit is arranged at the main stress part of the part to be tested; and step 3: connecting two loading oil cylinders to an operation box and a hydraulic power source, and connecting a tension sensor and a stress-strain testing unit to a data acquisition unit; and 4, step 4: the two loading oil cylinders are controlled by the operation box to load, and the inspection process is observed and the inspection data is recorded by the data acquisition unit to obtain the detection result.

The safety performance detection method for the lifting lug or the hoisting pipe is simple and easy to implement, high in accuracy and high in working efficiency, but the fatigue performance of the lifting lug cannot be detected.

Disclosure of Invention

The invention aims to provide a double-shaft lug fatigue performance testing device which has the advantage that a lug can be loaded in two directions simultaneously through the cooperative operation of double actuating cylinders.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a biax lug fatigue performance testing arrangement, includes the base, be equipped with detection device on the base, detection device is including the slider that is equipped with on being located the base, the thrust unit who is connected with slider, keep away from fixed frock that thrust unit one side was equipped with, be located the first lifting hook that is equipped with on the fixed frock, be located the second lifting hook that is equipped with on the thrust unit, be located the lug between first lifting hook and the second lifting hook and the data analysis ware of being connected with the thrust unit electricity. By adopting the technical scheme, the method has the advantages that,

further setting: the sliding device comprises a first sliding seat arranged on the base, a first ball arranged on the first sliding seat, a second sliding seat arranged on the first ball and symmetrical to the first sliding seat, and a second ball arranged on the second sliding seat.

Further setting: and an upper limiting tool is further arranged above the sliding device and fixedly connected with the base through a fixing bolt.

Further setting: the pushing device comprises an actuator, a universal joint and a sliding tool, wherein the actuator is arranged on the base and faces the sliding device, the universal joint is arranged at an outlet of the actuator, the universal joint is arranged on the universal joint, and the sliding tool is connected with the universal joint and clamped between the first sliding seat and the second sliding seat.

Further setting: and the two sides of the pushing device are also provided with a jacking block fixed on the base.

Further setting: and the top ends of the first lifting hook and the second lifting hook are also provided with limit caps in threaded connection with the first lifting hook and the second lifting hook.

By adopting the technical scheme, the two actuators which are vertical to each other enable the whole transmission direction to have two vertical to each other or a certain included angle in a horizontal plane, so that the sample piece can carry out biaxial movement in the horizontal plane; and the universal joint exists between slip frock and two actuators, a compensation for displacement when being used for biax fatigue test, there is the ball in the sliding seat, play limiting displacement to the slip frock, reduce the friction simultaneously, eliminate the atress of vertical direction, the mesa keeps the horizontality, guarantee its steady operation, slip frock and sliding seat, the ball has good hardness, wearability and lubricity, can keep high-speed steady operation, lifting hook and fixed frock threaded connection, to the lug of different forms, can change the different lifting hooks of use and match, thereby reach the purpose of commonality.

In conclusion, the invention has the following beneficial effects: the manufacturing cost of the device is quite low compared with that of large-scale equipment such as a vibrating table and a multi-degree-of-freedom rack, the manufacturing cost is quite low, the structure is simple, the operation and the replacement of sample pieces are simple, the maintenance is convenient, meanwhile, the device is not limited to the test of single-form sample pieces, the fatigue test loading of different lifting lugs can be realized by changing different tools, the position of an actuator can be changed according to the requirement, and the angle between two actuating cylinders can be adjusted, so that more test purposes can be achieved.

Drawings

The invention is further described below with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of a biaxial lug fatigue performance testing device;

fig. 2 is a structural disassembly schematic diagram of a main device of the double-shaft lug fatigue performance testing device.

In the figure, 1, a base; 2. a detection device; 21. a sliding device; 211. a first sliding seat; 212. a first ball bearing; 213. a second sliding seat; 214. a second ball bearing; 22. a pushing device; 221. an actuator; 222. a universal joint; 223. sliding the tool; 23. fixing the tool; 24. a first hook; 25. a second hook; 26. lifting lugs; 27. a data analyzer; 3. an upper limiting tool; 4. fixing the bolt; 5. a jacking block; 6. a limiting cap.

Detailed Description

The following further describes the embodiments of the present invention with reference to the drawings.

The technical scheme adopted by the invention is as follows:

the utility model provides a biax lug fatigue performance testing arrangement, as shown in fig. 1 and fig. 2, including base 1, be equipped with detection device 2 on the base 1, detection device 2 is including being located the slider 21 that is equipped with on base 1, and slider 21 is including being located the first sliding seat 211 that is equipped with on base 1, be equipped with first ball 212 on first sliding seat 211, and be located and be equipped with the second sliding seat 213 with first sliding seat 211 symmetry on the first ball 212, be equipped with the second ball 214 unanimous with first ball 212 on the second sliding seat 213 simultaneously, still be equipped with spacing frock 3 in the top of second sliding seat 213, it passes through fixing bolt 4 and base 1 fixed connection to go up spacing frock 3, thereby guarantee whole slider 21's stability.

The sliding device 21 is connected with a pushing device 22, two sides of the pushing device 22 are further provided with a jacking block 5 fixed on the base 1, the pushing device 22 comprises an actuator 221 located on the base 1 and facing the sliding device 21, an outlet of the actuator 221 is provided with a universal joint 222, the universal joint 222 is connected with a sliding tool 223 clamped between the first sliding seat 211 and the second sliding seat 213, a fixing tool 23 is further arranged on one side of the pushing device 22, the fixing tool 23 is provided with a first lifting hook 24, a second lifting hook 25 is arranged on the pushing device 22, a lifting lug 26 needing to be detected can be placed between the first lifting hook 24 and the second lifting hook 25, a data analyzer 27 electrically connected with the pushing device 22 is further arranged on the base 1, and a limiting cap 6 in threaded connection with the first lifting hook 24 and the second lifting hook 25 is further arranged at the top end of the first lifting hook 24 and the second lifting hook 25.

The application actually provides a double-shaft lifting lug fatigue performance testing device, wherein an actuator 221 is provided with two actuators 221 which are perpendicular to each other or have a certain included angle in a horizontal plane, so that a sample piece carries out double-shaft motion in the horizontal plane; the universal joint 222 is arranged between the sliding tool 223 and the two actuators 221 and used for compensating displacement during a biaxial fatigue test, the base 1 is of a firm and stable structure, the table top is kept in a horizontal state, and the upper limiting tool 3 is fixed through the fixing bolt 4 to ensure stable operation.

Have the ball in first sliding seat 211 and the second sliding seat 213, play limiting displacement to slip frock 223, reduce the friction simultaneously, eliminate vertical direction's atress, first lifting hook 24 and second lifting hook 25 and fixed frock 23 bolted connection can change the lifting hook that uses the difference and match to the lug 26 of different forms to reach the purpose of commonality.

The method comprises the following operation steps:

first, pass through bolted connection on fixed frock 23 with first lifting hook 24 one side that test sample spare matches, second lifting hook 25 is connected to on the slip frock 223, slip frock 223 is arranged in first sliding seat 211 top, transversely and longitudinally be connected to on the universal joint 222, and the universal joint 222 links to each other with actuator 221, thereby realize two actuator 221 movements simultaneously, drive slip frock 223 and carry out the simultaneous movement of two directions, whether experimental inspection ball has wearing and tearing or damage at every turn, at last with second slip seat and last spacing frock 3 bolted connection on base 1, insert the lifting hook that matches with lug 26 both ends, screw up stop cap 6, and begin to test.

The present invention is not intended to be limited to the particular embodiments shown above, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a biax lug fatigue performance testing arrangement, includes base (1), its characterized in that: be equipped with detection device (2) on base (1), detection device (2) are including slide device (21) that are located to be equipped with on base (1), thrust unit (22) be connected with slide device (21), keep away from fixed frock (23) that thrust unit (22) one side was equipped with, be located first lifting hook (24) that are equipped with on fixed frock (23), be located second lifting hook (25) that are equipped with on thrust unit (22), be located lug (26) between first lifting hook (24) and second lifting hook (25) and be connected data analyzer (27) with thrust unit (22) electricity.

2. The biaxial lug fatigue performance testing device according to claim 1, characterized in that: the sliding device (21) comprises a first sliding seat (211) arranged on the base (1), a first ball (212) arranged on the first sliding seat (211), a second sliding seat (213) which is arranged on the first ball (212) and is symmetrical to the first sliding seat (211), and a second ball (214) arranged on the second sliding seat (213).

3. The biaxial lug fatigue performance testing device according to claim 2, characterized in that: an upper limiting tool (3) is further arranged above the sliding device (21), and the upper limiting tool (3) is fixedly connected with the base (1) through a fixing bolt (4).

4. The biaxial lug fatigue performance testing device according to claim 3, characterized in that: the pushing device (22) comprises an actuator (221) which is arranged on the base (1) and faces towards the sliding device (21), a universal joint (222) which is arranged at an outlet of the actuator (221), and a sliding tool (223) which is arranged on the universal joint (222) and connected with the universal joint (222) and clamped between the first sliding seat (211) and the second sliding seat (213).

5. The biaxial lug fatigue performance testing device according to claim 4, characterized in that: and two sides of the pushing device (22) are also provided with a jacking block (5) fixed on the base (1).

6. The biaxial lug fatigue performance testing device according to claim 5, characterized in that: and the top ends of the first lifting hook (24) and the second lifting hook (25) are also provided with limiting caps (6) in threaded connection with the first lifting hook and the second lifting hook.