SU1481513A1 - Hydraulic cylinders test bed - Google Patents

Abstract

The invention improves the accuracy of the test results of hydraulic cylinders by eliminating radial loads. A support 2 is mounted on the frame 1 for securing the load device (U) 3. The cylinder under test (C) 7 is installed coaxially with C 3, which cooperates with C 7 through a mounting unit 8. The rod 9 is connected to a strut 4 with a fastening knot 10. At 3 it is made in the form of a pipe 14 with a piston 15 installed in it and an emphasis 16 on its outer surface from the C side 7. The pipe 14 is connected on the other side to the hydraulic system 5 through a throttle valve U 11. The base plate 12 is mounted on a rack 4 with the help of adjustable spherical stops 17 and hinged lever hangers 18. Node 10 is mounted on plate 12. Stuck U 13 is designed as a flange 19 with holes, cooperating with stop 16 and 20, hingedly mounted in holes 19 of the flange 19 parallel to C 7 and interacting with the plate 12. 2 Il.

Description

Thebes. one

The invention relates to testing equipment, namely, stands for testing hydraulic cylinders.

The purpose of the invention is to improve the accuracy of the test results of hydraulic cylinders by eliminating radial loads.

FIG. 1 shows a test bench for hydraulic cylinders, a general view; in fig. 2 is a section A-A on, FIG. one.

A test stand, for example, hydraulic cylinders, contains a frame 1 with a support 2 mounted on it to secure the load device 3, stand 4, hydraulic system 5 and power supply 6 to the test hydraulic cylinder 7 by means of the first fastening assembly 8, rod 9 which is connected to stand 4 with the second node 10 mounts, while the stand is equipped with a throttle device 11, the base plate 12 and the clamping device 13, and the loading device 3 is made in the form of a pipe 14 with a piston 15 installed in it and an emphasis 16 on its outer surface ( Acene) from the side of the test cylinder 7, which is connected to the hydraulic system 5 through the Dross plus, device I, the base plate 12 is installed on the rack 4 with the possibility of changing its position relative to the rack 4 using adjustable spherical stops 17 and pivot arms with suspension 18, A second mounting unit 10 for the test cylinder 7 is mounted on a support plate 12, the clamping device 13 is designed as a flange 19 with holes (not marked), which interacts with the stop 16 on the pipe 14, and a few e three, t 20 mounted in the holes of the flange cap 19 parallel to the test hydraulic cylinder 7 and interacting with the base plate 12. On the flange 19, a pivot bearing 21 is installed, and to compensate for the forces arising during tightening of the pivot bearing 21, on the rails 20 compensators are provided 22.

The bench for testing hydraulic cylinders operates as follows.

After securing the loading device 3a to the support 2 mounted on the frame 1. Install the test hydraulic 7 using the first 8 and second 10 attachment points, while using adjustable spherical stops 17 n hinged lever suspensions 18 that interact with both the stand 4 and with the base plate 12, the test cylinder 7 is centered coaxially with the load device 3, namely with 14. Then with the help of the clamping device 13 in the form of sin 20 and interacting through the hinge support 21 with the flange 19, and through it with pack With the pipe 16 pipe 16, the joint is uniformly tightened and all the distortions with load compensation are selected due to 20 compensators 22 installed on the belts.

When the working medium is supplied from the power source 6, an excessive pressure is created in the working cavities (not indicated) of the tested hydraulic cylinder 7;

moving the piston 15 and extending the rod 9 loaded with a load that is created by the working medium inside the pipe 14 of the load device 3, and the fluid through the tuned device 11 is displaced into the hydraulic system 5. After the test, the hydraulic system 5 is turned off, the excess pressure from the working cavities of the tested cylinder 7 is reset, and to return the hydraulic cylinder 7 to its original position by turning on

0 hydraulic systems 5 supply the working medium to the internal cavity (not indicated) of the pipe 14. When the hydraulic cylinder 7 reaches its initial position, the hydraulic system 5 is turned off.

Claims (1)

Invention Formula A test bench for hydraulic cylinders comprising a frame with a support mounted thereon for securing the load device, a stand, a hydraulic system and a power source of the test cylinder mounted coaxially with the load device interacting with the test cylinder through the first attachment unit, the rod of which is connected to the stand by 5 second attachment point, characterized in that. that, in order to increase the reliability of the test results by eliminating radial loads, the stand is equipped with a throttle device, base plate and tension device, and the load device is in the form of a pipe with a piston installed in it and focusing on its outer surface on the side of the test cylinder connected to the other side to the hydraulic system through the throttle device, the supports on the plate are mounted on the stand with the possibility of changing its position relative to the stand with the help of adjustable spherical stops hinge arm suspensions, and the second cylinder attachment of the test assembly is mounted on the support 0 plate, the clamping device is made in the form of a cap flange with holes, interacting with an emphasis on the pipe, and several, at least three tons of g articulated in the holes of the cap flange parallel to the test cylinder 5 and interacting with the base plate. 18 YU 18 FIG. 2