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CN-224216415-U - Oil pipe fracture protection device of hydraulic valve testing machine

CN224216415UCN 224216415 UCN224216415 UCN 224216415UCN-224216415-U

Abstract

The utility model relates to the technical field of safety protection of hydraulic equipment, and particularly discloses an oil pipe breakage protection device of a hydraulic valve testing machine. The device comprises protective structures symmetrically arranged on two sides of a tester, wherein a dynamic lateral protective layer is formed by a first vertical rod, a second vertical rod and a scissor-fork type telescopic mechanism for connecting the first vertical rod and the second vertical rod, and a self-adaptive covering system is formed at the top through a roller shutter type protective net and a fixed rod. The shearing fork mechanism realizes telescopic deformation through sliding fit of the transverse groove sliding blocks and the vertical grooves of the vertical rods, synchronously follows reciprocating motion of the movable parts of the testing machine, covers two side areas of the oil pipe, and automatically expands by adopting a pre-tightening winding drum to protect the upper part of the oil pipe. By adopting the scheme, the hydraulic valve testing machine can realize effective protection when the hydraulic oil pipe is damaged by fatigue and breaks, and avoid accidents.

Inventors

  • LUO WEIWEI
  • SU HUA
  • ZHANG YUNBING
  • MIAO JUN

Assignees

  • 宜都兴发化工有限公司

Dates

Publication Date
20260508
Application Date
20250411

Claims (8)

  1. 1. The oil pipe breakage protection device of the hydraulic valve testing machine is characterized by comprising a protection device (2) arranged on the hydraulic valve testing machine (1), wherein the protection device (2) comprises two first vertical rods (3) and two second vertical rods (4), a single first vertical rod (3) and a single second vertical rod (4) are arranged on the same side of the hydraulic valve testing machine (1), and a scissor type telescopic mechanism (5) is arranged between the first vertical rod (3) and the second vertical rod (4); The hydraulic valve testing machine is characterized in that scissor-fork type telescopic mechanisms (5) on two sides of the hydraulic valve testing machine (1) form lateral protection, a top surface protection net roll (9) is arranged between the upper ends of two second vertical rods (4) at one end, a protection net (901) is wound on the top surface protection net roll (9), a fixing rod (10) is arranged between the upper ends of two first vertical rods (3) at the other end, the extending ends of the protection net (901) are fixed on the fixing rod (10), and the protection net (901) forms upper protection.
  2. 2. The oil pipe breakage protection device of a hydraulic valve testing machine according to claim 1, wherein the two first vertical rods (3) are fixedly arranged on two sides of an upper movable part (101) of the hydraulic valve testing machine (1).
  3. 3. The oil pipe breakage protection device of the hydraulic valve testing machine according to claim 1, wherein the two second vertical rods (4) are fixedly arranged on the ground on one side of the hydraulic valve testing machine (1).
  4. 4. The oil pipe fracture protection device of the hydraulic valve testing machine according to claim 1, wherein an upper cross rod (6) and a lower cross rod (7) are further arranged between the first vertical rod (3) and the second vertical rod (4) on the same side, and an upper transverse groove (601) and a lower transverse groove (701) are respectively arranged on the upper cross rod (6) and the lower cross rod (7); a plurality of sliding blocks (8) are arranged in the upper transverse groove (601) and the lower transverse groove (701), and upper and lower hinge points in the scissor type telescopic mechanism (5) are respectively arranged on the sliding blocks (8) in the upper transverse groove (601) and the lower transverse groove (701) in a one-to-one correspondence mode.
  5. 5. The oil pipe breakage protection device of a hydraulic valve testing machine according to claim 4, wherein the first vertical rod (3) and the second vertical rod (4) are respectively provided with a first vertical groove (301) and a second vertical groove (401) at positions close to the bottom; of the plurality of sliding blocks (8) in the lower transverse groove (701), two sliding blocks (8) at two ends penetrate into the first vertical groove (301) and the second vertical groove (401).
  6. 6. The oil pipe breakage protection device of a hydraulic valve testing machine according to claim 5, wherein in the scissor type telescopic mechanism (5), an upper hinge point and a lower hinge point of one end are respectively hinged to one ends of an upper cross rod (6) and a lower cross rod (7), and the rest hinge points are respectively positioned in an upper transverse groove (601) and a lower transverse groove (701).
  7. 7. The oil pipe breakage protecting device of a hydraulic valve testing machine according to claim 4, wherein one ends of the upper cross bar (6) and the lower cross bar (7) extend away from the hydraulic valve testing machine (1).
  8. 8. The oil pipe breakage protecting device of the hydraulic valve testing machine according to claim 1, wherein the top surface protecting net roll (9) is wound on a winding drum with a torsion spring.

Description

Oil pipe fracture protection device of hydraulic valve testing machine Technical Field The utility model relates to the technical field of hydraulic valve detection, in particular to an oil pipe fracture protection device of a hydraulic valve testing machine. Background The hydraulic valve tester is used as core equipment in the field of valve manufacturing and overhaul, and performs tightness test, strength test and action performance detection on various valves through a hydraulic driving system. The existing testing device generally adopts high-pressure hydraulic oil to drive an actuating mechanism, and a typical structure of the existing testing device comprises a hydraulic station, a multi-degree-of-freedom mechanical arm and a special testing tool, wherein a hydraulic oil pipe is used as a key component for power transmission and is in a dynamic working condition for a long time. In practical application, it is found that the drive oil pipe needs to bear 5-8 times of high-frequency reciprocating bending motions per minute because the test procedure needs to frequently switch different test modes. More seriously, the equipment is mostly deployed in open air or semi-open workshops, and the hydraulic oil pipe is exposed to multiple environmental stresses such as temperature difference change, oil corrosion, mechanical collision and the like for a long time. The conventional rubber reinforced hydraulic hose has the problems of surface layer cracking, fatigue fracture of a steel wire weaving layer and the like after being continuously used for 6-8 months, so that high-pressure oil liquid is instantaneously sprayed to cause accidents. Disclosure of Invention The utility model aims to solve the technical problem of providing the oil pipe fracture protection device of the hydraulic valve testing machine, which can realize effective protection during fatigue damage fracture of the hydraulic oil pipe of the hydraulic valve testing machine and avoid accidents. In order to solve the technical problems, the technical scheme adopted by the utility model is that the oil pipe fracture protection device of the hydraulic valve testing machine comprises a protection device arranged on the hydraulic valve testing machine, wherein the protection device comprises two first vertical rods and two second vertical rods, a single first vertical rod and a single second vertical rod are arranged on the same side of the hydraulic valve testing machine, and a scissor type telescopic mechanism is arranged between the first vertical rod and the second vertical rod; The hydraulic valve testing machine is characterized in that scissor-fork telescopic mechanisms at two sides of the hydraulic valve testing machine form side protection, a top surface protection net roll is arranged between the upper ends of two second vertical rods at one end, a protection net is wound on the top surface protection net roll, a fixing rod is arranged between the upper ends of two first vertical rods at the other end, the extending ends of the protection net are fixed on the fixing rod, and the protection net forms upper protection. In the preferred scheme, two first vertical rods are fixedly arranged on two sides of the upper movable part of the hydraulic valve testing machine. In the preferred scheme, the two second vertical rods are fixedly arranged on the ground at one side of the hydraulic valve testing machine. In the preferred scheme, an upper cross rod and a lower cross rod are arranged between the first vertical rod and the second vertical rod on the same side, and an upper transverse groove and a lower transverse groove are respectively arranged on the upper cross rod and the lower cross rod; The upper transverse groove and the lower transverse groove are internally provided with a plurality of sliding blocks, and the upper hinge points and the lower hinge points in the scissor type telescopic mechanism are respectively arranged on the sliding blocks in the upper transverse groove and the lower transverse groove in a one-to-one correspondence mode. In a preferred scheme, a first vertical groove and a second vertical groove are respectively arranged on the positions of the first vertical rod and the second vertical rod, which are close to the bottom; Among the sliding blocks in the lower transverse groove, two sliding blocks positioned at two ends penetrate into the first vertical groove and the second vertical groove. In the preferred scheme, in the scissors fork telescopic machanism, two articulated points about one end are articulated in the one end of last horizontal pole and bottom rail respectively, and other articulated points all are located in last horizontal groove and lower horizontal groove. In a preferred scheme, one end of the upper cross rod and one end of the lower cross rod extend away from the hydraulic valve testing machine. In a preferred scheme, the top surface protective net is wound on a winding drum with a torsion spring. Ac