CN103630359A - Sliding bearing testing machine based loading mechanism - Google Patents

Abstract

The invention relates to a loading mechanism based on a sliding bearing testing machine. Guide rods are installed on both sides of the sliding bearing base, and a loading cover is slidably connected to the two guiding rods, and the loading cover is sleeved on the guiding rod between the sliding bearing base. There is a compression spring, and the guide rod protruding from the upper end surface of the loading cover is screwed with a guide rod nut. The loading shaft and the loading roller are connected through rolling bearings in the loading cover, and the front and rear ends of the loading cover are fixedly connected to the fixed end cover with end cover nuts. The invention is a loading mechanism of a sliding bearing test device capable of simulating actual working conditions. The loading mechanism can provide the stable load of the sliding bearing and the load that changes according to certain rules, such as alternating load, etc., and can carry out the performance test of the sliding bearing according to the design requirements and actual working conditions. The loading mechanism is simple in structure and reliable in operation. It does not need to change or control the characteristics of the external load. It only needs to replace and install specific loading rollers in advance according to the test requirements to realize the test load requirements.

Description

Loading Mechanism Based on Sliding Bearing Testing Machine

technical field

The invention relates to a sliding bearing testing machine, in particular to a loading mechanism of the sliding bearing testing machine.

Background technique

Sliding bearings have the advantages of strong bearing capacity, stable operation, good shock resistance, and long life, so they can be seen in everything from small household appliances to large steel rolling production lines. Sliding bearing testing machine is the basic test equipment for analyzing the bearing mechanism of sliding bearings, and is an important practical basis for analyzing and studying the lubrication characteristics of bearings and carrying out innovative designs. As the carrier of sliding bearing tests, sliding bearing testing machines are widely used in teaching, scientific research and production departments, and become the key to the research and manufacturing level of sliding bearings in my country. Most of the traditional sliding bearing test benches are mechanical, mainly manual experiments, not to mention low efficiency, it is difficult to complete experiments with high precision. In recent years, some test benches have been enhanced in performance and function due to the combination of modern computer technology, but from the perspective of research and design, their researchability is insufficient, the loading characteristics are single, and they cannot simulate many real working conditions. With variable loads, it is difficult to realize the transformation of experiments or tests from demonstration and verification to comprehensive research.

Contents of the invention

The present invention is to provide a loading mechanism based on a sliding bearing testing machine, which is a loading mechanism of a sliding bearing testing device that can simulate actual working conditions. The loading mechanism can provide a stable load of a sliding bearing or a load that changes according to a certain rule. Such as alternating load, etc., the performance test of the sliding bearing can be carried out according to the design requirements and actual working conditions. The loading mechanism is simple in structure and reliable in operation. It does not need to change or control the characteristics of the external load, as long as the specific loading roller is replaced and installed in advance according to the test requirements, the test load requirements can be realized.

To achieve the above object, the technical solution of the present invention is: a loading mechanism based on a sliding bearing testing machine, including a sliding bearing base, a guide rod, a compression spring, a loading cover, a guide rod nut, a fixed end cover, an end cover nut, a rolling bearing 1. Loading roller, which is characterized in that guide rods are installed on both sides of the sliding bearing base, and the loading cover is slidably connected to the two guide rods, and a compression spring is sleeved on the guide rod between the loading cover and the sliding bearing base. The guide rod on the upper end surface of the loading cover is screwed with a guide rod nut, and the loading shaft and the loading roller are connected through rolling bearings in the loading cover, and the front and rear ends of the loading cover are fixedly connected to the fixed end cover with end cover nuts. The loading roller is a cylindrical loading roller or a loading roller following a certain circular trajectory.

The beneficial effects of the present invention are:

The loading mechanism based on the sliding bearing testing machine of the present invention is a loading mechanism of the sliding bearing testing device that can simulate actual working conditions. The loading mechanism can provide the stable load of the sliding bearing or the load that changes according to a certain rule, such as alternating load, etc., and the performance test of the sliding bearing can be carried out according to the design requirements and actual working conditions. The loading mechanism is simple in structure and reliable in operation. It does not need to change or control the characteristics of the external load, as long as the specific loading roller is replaced and installed in advance according to the test requirements, the test load requirements can be realized. This mechanism can provide a larger working load instead of the general simulated load, which makes the test more in line with the actual working conditions. Due to the characteristics of the loading roller, it provides a good foundation for the scientific research, structure, material and lubrication condition exploration of the sliding bearing test.

Description of drawings

Fig. 1 is a structural front view of the present invention;

Fig. 2 is a left side view of Fig. 1 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, a loading mechanism based on a sliding bearing testing machine includes a sliding bearing base 1, a guide rod 2, a compression spring 3, a loading cover 4, a guide rod nut 5, a fixed end cover 6, and an end cover nut 7. Rolling bearing 8, loading roller 9.

The two sides of the sliding bearing base 1 are respectively equipped with guide rods 2, and the two guide rods 2 are slidably connected to the loading cover 4, and the guide rod 2 between the loading cover 4 and the sliding bearing base 1 is sleeved with a compression spring 3. The guide rod 2 on the upper end surface of the loading cover 4 is screwed with a guide rod nut 5, and the loading shaft and the loading roller 9 are connected through a rolling bearing 8 in the loading cover 4, and the front and rear ends of the loading cover 4 are fixedly connected to the fixed end cover with the end cover nut 7 6.

The main function of each component:

(1) Sliding bearing base 1: used to install test bearings and connect guide rods and other components.

(2) Guide rod 2: One end is threaded with the sliding bearing base, and the other end is connected with the guide rod nut. In the work, it can ensure that the loading cover moves along its guiding direction without deflection.

(3) Compression spring 3: Eliminates play in the mechanism. And use the compression spring characteristics to automatically restore the original state without manual intervention when the test is over or paused.

(4) Loading cover 4: The test load of the hydraulic cylinder during the transmission test.

(5) Guide rod nut 5: Pre-tighten the compression spring to generate a certain pre-tightening force and keep the compression spring in working condition.

(6) Fixed end cover 6: used for axial or horizontal fixation of loading shafts, rolling bearings, etc.

(7) End cover nut 7: used to connect and fix the loading cover 4 and the fixed end cover 6.

(8) Rolling bearing 8: Installed at both ends of the loading shaft to reduce the frictional resistance of the loading shaft during work and the additional load of the test.

(9) Loading roller 9: The loading roller adopts two forms, the common cylindrical loading roller and the loading roller following a certain circular track. Ordinary cylindrical loading rollers can achieve a stable load retention state, while loading rollers with a certain circular trajectory are made of elliptical rollers and certain circular trajectory. Using this kind of characteristics can realize the simulated working conditions such as alternating loading.

The working principle of the present invention is as follows:

Before the test, install the sliding bearing base on the designated position on the base of the testing machine, and connect and install the test bearing and working shaft according to the test requirements. Install the guide rod, compression spring, pre-installed loading roller, rolling bearing, fixed end cover, loading cover and other loading components on the guide rod and tighten and lock it with the guide rod nut to make the compression spring generate a certain pre-tightening force and keep the compression The working state of the spring. After the testing machine runs according to the test requirements, the hydraulic cylinder is loaded with working pressure. At this time, because the loading roller contacts the working shaft and transmits the working pressure to the working shaft and the test bearing. Since the load roll rotates with the work shaft, the profile curve of the load roll determines the characteristics of the test load. The loading roller adopts various forms, ordinary cylindrical loading roller and loading roller according to a certain circular track. Ordinary cylindrical rollers can achieve a stable load retention state, while the loaded rollers according to a certain circular trajectory are either elliptical rollers or made according to a certain circular trajectory. Using this kind of characteristics can realize the simulated working conditions of alternating loading.

Claims (2)

1. the load maintainer based on sliding bear experiment machine, comprise sliding bearing base (1), guide pole (2), Compress Spring (3), load lid (4), guide pole nut (5), fixing end cap (6), end cap nut (7), rolling bearing (8), loaded roll (9), it is characterized in that: described sliding bearing base (1) is equipped with respectively guide pole (2) above both sides, two guide poles (2) are slidably connected above and load lid (4), load on the guide pole (2) between lid (4) and sliding bearing base (1) and be socketed with Compress Spring (3), stretch out on the guide pole (2) that loads lid (4) upper surface and be rotary with guide pole nut (5), load in lid (4) and connect and load axle and loaded roll (9) by rolling bearing (8), load lid (4) front, end cap nut for rear two ends (7) is fixedly connected with fixedly end cap (6).

2. the load maintainer based on sliding bear experiment machine according to claim 1, is characterized in that: described loaded roll (9) is for cylinder loaded roll or by the loaded roll of certain circular path.

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