CN104614160B - Simple device for grouping, selecting and matching static bearing restrictor - Google Patents

Abstract

The present invention is a simple device for group matching of hydrostatic bearing restrictors, the device includes bracket (1), conical funnel (2), sealing plug (3), measuring cylinder (5), wherein: conical funnel (2) Located on the bracket (1), a sealing plug (3) is placed at the bottom outlet of the conical funnel (2), and a throttle (4) to be tested is installed in the sealing plug (3), and the measuring cylinder (5) is located on the cone Under the conical funnel (2), the liquid flows into the measuring cylinder (5) from the bottom of the conical funnel (2) through the restrictor to be tested (4). The restrictors are grouped into one group, so that the restrictors can be grouped and matched quickly. The device has the advantages of simple structure, low cost and convenient operation.

Description

A Simple Group Matching Device for Hydrostatic Bearing Throttles

technical field

The invention relates to the problem of group selection and matching of throttles of static pressure bearings, and belongs to the field of mechanical design.

Background technique

As the pressure compensating element of the hydrostatic bearing, the restrictor plays a decisive role in the bearing capacity and the rigidity of the oil film. The pressurized fluid passes through the restrictor, relying on the pressure drop generated when the fluid flows through the restrictor, the pressure of each oil chamber is automatically adjusted to adapt to the change of the load. Due to machining errors, the aperture and length of the same batch of restrictors are not the same, which directly affects the load-bearing performance of the bearing. According to the static pressure theory, the restrictors used in the same hydrostatic bearing should have the same throttle fluid resistance. . Therefore, it is necessary to invent a simple throttle group matching device.

Contents of the invention

Technical problem: The purpose of the present invention is to provide a simple device for group matching of hydrostatic bearing restrictors, which can realize rapid matching of restrictors, simple and accurate detection and selection of throttle fluid resistance approximately equal A set of throttles.

Technical solution: A simple hydrostatic bearing restrictor group matching device of the present invention is characterized in that the device includes a bracket, a tapered funnel, a sealing plug, and a measuring cylinder, wherein: the tapered funnel is located on the bracket, and the tapered funnel A sealing plug is placed at the outlet of the bottom of the funnel, and the throttle to be tested is installed in the sealing plug. The measuring cylinder is located below the conical funnel, and the liquid flows into the measuring cylinder from the bottom of the conical funnel through the throttle to be tested, and passes through the test within a unit time. The flow through the restrictor is selected in groups.

The sealing plug is an elastic ring-mounted structural part with a middle hole, and the sealing plug is a middle hole to install a throttle to be tested. The bracket is a movable or fixed bracket whose height is greater than that of the tapered funnel plus the measuring cylinder.

Beneficial effects: the present invention is a simple group matching method for hydrostatic bearing restrictors, which can quickly select the restrictors in groups, and the device has simple structure, low cost and convenient operation.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

The components in the figure are: bracket 1, tapered funnel 2, sealing plug 3, throttle to be tested 4, measuring cylinder 5.

detailed description

The device structure of a simple hydrostatic bearing throttling group matching device according to the present invention is shown in Figure 1.

The device includes a bracket, a tapered funnel, a sealing plug, and a measuring cylinder, wherein: the tapered funnel is located on the bracket, a sealing plug is placed at the outlet of the bottom of the tapered funnel, a restrictor to be tested is installed in the sealing plug, and the measuring cylinder is located on the tapered funnel. Underneath, the liquid flows from the bottom of the conical funnel through the restrictor to be tested into the measuring cylinder, and the restrictors are grouped and selected by comparing the flow rate of the restrictor in the same time.

The sealing plug is made of soft material; the sealing plug is drilled with an internal thread hole having the same diameter as the outer diameter of the restrictor to be tested, and the restrictor to be tested is connected to the sealing plug by threads.

The support is a movable or fixed support whose height is greater than that of the tapered funnel plus the graduated cylinder.

The specific operation process is:

1) Screw the restrictor 4 to be tested into the middle hole of the sealing plug 3;

2) Install the sealing plug 3 at the bottom outlet of the conical funnel 2;

3) The liquid flows into the measuring cylinder 5 through the throttle 4 to be detected from the bottom of the conical funnel 2;

4) Measure the flow rate of each restrictor flowing into the measuring cylinder 5 within the same time period, according to the relationship between the liquid resistance of the restrictor and the flow rate, and compare the flow rates flowing through each restrictor within the same time period, and select the restrictors to be tested in groups .

Claims (1)

1. A simple device for group matching of hydrostatic bearing restrictors, characterized in that the device includes a bracket (1), a tapered funnel (2), a sealing plug (3), and a measuring cylinder (5), wherein: the cone The shaped funnel (2) is located on the support (1), and a sealing plug (3) is placed at the bottom outlet of the conical funnel (2), and the throttle (4) to be tested is installed in the sealing plug (3), and the measuring cylinder (5) Located below the conical funnel (2), the liquid flows into the measuring cylinder (5) from the bottom of the conical funnel (2) through the restrictor to be tested (4), and the flow rate through the restrictor per unit time is tested, and the throttling The device is grouped and selected; The sealing plug (3) is an elastic ring with a middle hole, and a restrictor (4) to be tested is built in.