Oil pipe fracture protection device of hydraulic valve testing machine

Abstract

The utility model relates to the technical field of hydraulic equipment safety protection, and particularly discloses an oil pipe fracture protection device of a hydraulic valve testing machine. The device comprises protection structures symmetrically arranged on the two sides of a testing machine, and a dynamic lateral protection layer composed of a first vertical rod, a second vertical rod and a shear fork type telescopic mechanism connecting the first vertical rod and the second vertical rod. And the top and the fixed rod form a self-adaptive covering system through a roller shutter type protective net. The shear fork mechanism is in sliding fit with a vertical groove of the vertical rod through a transverse groove sliding block to achieve telescopic deformation, synchronously follows reciprocating motion of a movable part of the testing machine and covers areas on the two sides of an oil pipe. The protection net is automatically unfolded through a pre-tightening winding drum to protect the upper portion of the oil pipe. According to the scheme, effective protection can be achieved when the hydraulic oil pipe of the hydraulic valve testing machine is subjected to fatigue damage and fracture, and accidents are avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic valve testing technology, specifically a hydraulic valve testing machine oil pipe rupture protection device. Background Technology

[0002] Hydraulic valve testing machines are core equipment in the valve manufacturing and repair field. They perform sealing tests, strength tests, and operational performance tests on various valves through a hydraulic drive system. Existing testing devices generally use high-pressure hydraulic oil to drive the actuator. Their typical structure includes a hydraulic station, a multi-degree-of-freedom robotic arm, and specialized testing fixtures. Among these, the hydraulic oil pipes, as key components for power transmission, are under dynamic operating conditions for extended periods.

[0003] In practical applications, it has been found that due to the frequent switching between different test modes required in the testing process, the drive hoses must withstand high-frequency reciprocating bending motions of 5-8 times per minute. Even more serious is the fact that this equipment is often deployed in open-air or semi-open workshops, where the hydraulic hoses are constantly exposed to multiple environmental stresses, including temperature variations, oil corrosion, and mechanical impacts. Conventional rubber-reinforced hydraulic hoses exhibit surface cracking and fatigue fracture of the steel wire braid layer after 6-8 months of continuous use, leading to sudden high-pressure oil jetting and accidents. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a hydraulic valve testing machine oil pipe fracture protection device, which can effectively protect the hydraulic oil pipe of the hydraulic valve testing machine from fatigue damage fracture and avoid accidents.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a hydraulic valve testing machine oil pipe rupture protection device, including a protective device installed on the hydraulic valve testing machine, the protective device including two first uprights and two second uprights, a single first upright and a single second upright are installed on the same side of the hydraulic valve testing machine, and a scissor telescopic mechanism is provided between the first upright and the second upright.

[0006] The scissor-type telescopic mechanism on both sides of the hydraulic valve testing machine forms side protection. A top protective net roll is provided between the upper ends of the two second uprights at one end, and a protective net is wrapped around the top protective net roll. A fixing rod is provided between the upper ends of the two first uprights at the other end, and the extended end of the protective net is fixed to the fixing rod, forming upper protection.

[0007] In the preferred embodiment, the two first uprights are fixedly mounted on both sides of the movable part of the hydraulic valve testing machine.

[0008] In a preferred embodiment, the two second uprights are fixedly mounted on the ground on one side of the hydraulic valve testing machine.

[0009] In a preferred embodiment, an upper horizontal bar and a lower horizontal bar are provided between the first and second uprights on the same side, and the upper horizontal bar and the lower horizontal bar are respectively provided with an upper horizontal groove and a lower horizontal groove;

[0010] Multiple sliders are provided in the upper and lower horizontal grooves, and the upper and lower hinge points of the scissor-type telescopic mechanism are respectively set on the sliders in the upper and lower horizontal grooves.

[0011] In a preferred embodiment, the first upright and the second upright are respectively provided with a first vertical groove and a second vertical groove near the bottom.

[0012] Of the multiple sliders in the lower horizontal groove, the two sliders located at both ends pass through the first vertical groove and the second vertical groove.

[0013] In a preferred embodiment, in the scissor-type telescopic mechanism, the upper and lower hinge points at one end are respectively hinged to one end of the upper crossbar and the lower crossbar, and the remaining hinge points are all located in the upper and lower cross grooves.

[0014] In a preferred embodiment, one end of the upper and lower crossbars extends away from the hydraulic valve testing machine.

[0015] In a preferred embodiment, the top protective netting is wound onto a drum equipped with a torsion spring.

[0016] This utility model provides a hydraulic valve testing machine oil pipe rupture protection device. Through the coordinated operation of a scissor-type telescopic mechanism and a transverse groove slider, the protective device can autonomously adjust its coverage area according to the reciprocating motion of the moving parts of the testing machine. When the oil pipe undergoes high-frequency bending with the robotic arm, the scissor mechanism synchronously extends and retracts within the groove, ensuring that the protective cover always covers the dynamic trajectory area of ​​the oil pipe, thus resolving the technical contradiction of interference between traditional fixed protective covers and moving parts. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure in actual application of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure at the junction of the first vertical groove and the lower horizontal groove of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the present invention in its unfolded state.

[0022] In the diagram: 1. Hydraulic valve testing machine; 101. Moving part; 2. Protective device; 3. First upright; 301. Second upright; 4. Second vertical groove; 401. Scissor telescopic mechanism; 5. Upper horizontal bar; 6. Upper horizontal groove; 601. Lower horizontal bar; 7. Lower horizontal groove; 701. Slider; 8. Top protective net roll; 9. Protective net; 901. Fixed rod; 10. Detailed Implementation

[0023] like Figure 1-4 In the present invention, a hydraulic valve testing machine has an oil pipe rupture protection device, including a protective device 2 installed on the hydraulic valve testing machine 1. The protective device 2 includes two first uprights 3 and two second uprights 4. The first uprights 3 and the second uprights 4 are installed on the same side of the hydraulic valve testing machine 1, and a scissor telescopic mechanism 5 is provided between the first uprights 3 and the second uprights 4.

[0024] The scissor-type telescopic mechanism 5 on both sides of the hydraulic valve testing machine 1 forms side protection. A top protective net roll 9 is provided between the upper ends of the two second uprights 4 at one end, and a protective net 901 is wrapped around the top protective net roll 9. A fixing rod 10 is provided between the upper ends of the two first uprights 3 at the other end, and the extended end of the protective net 901 is fixed on the fixing rod 10, thus forming upper protection.

[0025] In a preferred embodiment, the two first uprights 3 are fixedly mounted on both sides of the movable part 101 of the hydraulic valve testing machine 1.

[0026] In the preferred embodiment, the two second uprights 4 are fixedly installed on the ground on one side of the hydraulic valve testing machine 1.

[0027] In a preferred embodiment, an upper horizontal bar 6 and a lower horizontal bar 7 are provided between the first upright 3 and the second upright 4 on the same side, and an upper horizontal groove 601 and a lower horizontal groove 701 are respectively provided on the upper horizontal bar 6 and the lower horizontal bar 7.

[0028] Multiple sliders 8 are provided in the upper horizontal groove 601 and the lower horizontal groove 701. The upper and lower hinge points of the scissor telescopic mechanism 5 are respectively set on the sliders 8 in the upper horizontal groove 601 and the lower horizontal groove 701.

[0029] In a preferred embodiment, the first upright 3 and the second upright 4 are respectively provided with a first vertical groove 301 and a second vertical groove 401 near the bottom.

[0030] Of the multiple sliders 8 in the lower horizontal groove 701, two sliders 8 located at both ends pass through the first vertical groove 301 and the second vertical groove 401.

[0031] In a preferred embodiment, in the scissor-type telescopic mechanism 5, the upper and lower hinge points at one end are respectively hinged to one end of the upper crossbar 6 and the lower crossbar 7, and the remaining hinge points are all located in the upper cross groove 601 and the lower cross groove 701.

[0032] In a preferred embodiment, one end of the upper crossbar 6 and the lower crossbar 7 extends away from the hydraulic valve testing machine 1.

[0033] In a preferred embodiment, the top protective net roll 9 is wound around a drum with a torsion spring.

[0034] The present invention discloses a hydraulic valve testing machine oil pipe rupture protection device:

[0035] like Figure 1 , Figure 4 As shown, during the operation of the hydraulic valve testing machine 1, the movable part 101 moves to the right and clamps the valve. During this process, the movable part 101 drives the first upright 3 to move laterally to the right. Since the second upright 4 is fixed, the upper horizontal bar 6 and the lower horizontal bar 7 move to the right relative to the second upright 4. The slider 8 unfolds at the upper horizontal groove 601 and the lower horizontal groove 701 along with the upper and lower hinge points of the scissor-type telescopic mechanism 5. At the same time, due to the change in the height of the scissor-type telescopic mechanism 5, the lower horizontal bar 7 undergoes an upward displacement and moves upward along the first vertical groove 301 and the second vertical groove 401.

[0036] Throughout the process described above, the scissor-type telescopic mechanism 5 extends laterally, while the fixed rod 10 pulls the protective net 901 to extend synchronously, providing simultaneous protection for the hydraulic oil pipe section of the hydraulic valve testing machine 1 on both sides and the top.

Claims

1. A hydraulic valve testing machine's oil pipe rupture protection device, characterized in that: The protective device (2) is installed on the hydraulic valve testing machine (1). The protective device (2) includes two first uprights (3) and two second uprights (4). A single first upright (3) and a single second upright (4) are installed on the same side of the hydraulic valve testing machine (1), and a scissor telescopic mechanism (5) is provided between the first upright (3) and the second upright (4). The scissor-type telescopic mechanism (5) on both sides of the hydraulic valve testing machine (1) forms side protection. A top protective net roll (9) is provided between the upper ends of the two second uprights (4) at one end, and a protective net (901) is wrapped around the top protective net roll (9). A fixing rod (10) is provided between the upper ends of the two first uprights (3) at the other end, and the extended end of the protective net (901) is fixed on the fixing rod (10). The protective net (901) forms upper protection.

2. The hydraulic valve testing machine's oil pipe rupture protection device according to claim 1, characterized in that: The two first uprights (3) are fixedly installed on both sides of the movable part (101) of the hydraulic valve testing machine (1).

3. The hydraulic valve testing machine's oil pipe rupture protection device according to claim 1, characterized in that: The two second uprights (4) are fixedly set on the ground on one side of the hydraulic valve testing machine (1).

4. The oil pipe rupture protection device for a hydraulic valve testing machine according to claim 1, characterized in that: An upper horizontal bar (6) and a lower horizontal bar (7) are provided between the first upright (3) and the second upright (4) on the same side. The upper horizontal bar (6) and the lower horizontal bar (7) are respectively provided with an upper horizontal groove (601) and a lower horizontal groove (701). Multiple sliders (8) are provided in the upper horizontal groove (601) and the lower horizontal groove (701). The upper and lower hinge points of the scissor telescopic mechanism (5) are respectively set on the sliders (8) in the upper horizontal groove (601) and the lower horizontal groove (701).

5. The hydraulic valve testing machine's oil pipe rupture protection device according to claim 4, characterized in that: The first upright (3) and the second upright (4) are respectively provided with a first vertical groove (301) and a second vertical groove (401) near the bottom. Of the multiple sliders (8) in the lower horizontal groove (701), two sliders (8) located at both ends pass through the first vertical groove (301) and the second vertical groove (401).

6. The hydraulic valve testing machine's oil pipe rupture protection device according to claim 5, characterized in that: In the scissor telescopic mechanism (5), the upper and lower hinge points at one end are respectively hinged to one end of the upper crossbar (6) and the lower crossbar (7), and the remaining hinge points are located in the upper cross groove (601) and the lower cross groove (701).

7. The hydraulic valve testing machine's oil pipe rupture protection device according to claim 4, characterized in that: One end of the upper crossbar (6) and the lower crossbar (7) extends away from the hydraulic valve testing machine (1).

8. The oil pipe rupture protection device for a hydraulic valve testing machine according to claim 1, characterized in that: The top protective net roll (9) is wound on a drum with a torsion spring.

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