Hydraulic power spring fatigue test device

Abstract

The utility model discloses a hydraulic power spring fatigue test device which comprises a bottom plate, two sides of the middle of the top end of the bottom plate are respectively and fixedly connected with a supporting plate, the top ends of the supporting plates are fixedly connected with a supporting sliding seat, the top of the supporting sliding seat is provided with a sliding groove, and two mounting seats are respectively clamped in the sliding groove in a sliding mode. The opposite end faces of the two installation bases are hinged to one ends of transmission assemblies respectively, the other ends of the transmission assemblies are hinged to the two ends of hydraulic cylinders respectively, the hydraulic cylinders are movably arranged at the bottoms between the supporting plates, guide columns fixedly connected with the bottom ends of the installation bases are arranged at the tops of the hydraulic cylinders, and the guide columns are connected with the transmission assemblies in a sliding mode. The two mounting seats are driven by the hydraulic cylinder and matched with the transmission assembly to be far away from or close to each other in a reciprocating mode, then the springs fixedly clamped to the mounting seats stretch out and draw back repeatedly, the fatigue test of the springs is achieved, the overall structure is simple, the hydraulic cylinder serves as a power source, movement is more stable, and precision is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring test technical field, concretely is a kind of hydraulic power spring fatigue test device. BACKGROUND

[0002] Spring is an important element that works by using its elasticity. In work, the movement of components can be controlled by using the elasticity of the spring, and functions such as cushioning, pressure reduction, work, force measurement, and energy storage can be achieved. The performance of the spring will directly affect the reliability and safety of the equipment. However, the frequent stretching and compression of the spring during work can cause the spring material to fatigue, leading to breakage and equipment failure. Therefore, the spring generally needs to be tested for fatigue before it is shipped. Manufacturers also conduct a certain degree of fatigue test on the purchased spring to ensure the quality of the spring.

[0003] Currently, the existing spring fatigue test device mainly has three types: mechanical, electromagnetic resonance and electro-hydraulic servo. Among them, the mechanical method uses rotary motor, eccentric wheel, slider and other structural methods to stretch and compress the spring. This method has the disadvantages of low precision, large error, high energy consumption and high noise during testing, and it is difficult to reproduce the working conditions of the spring in some precision instruments. Therefore, we propose a hydraulic power spring fatigue test device to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of hydraulic power spring fatigue test device to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of hydraulic power spring fatigue test device, including bottom plate, the top end middle part both sides of the bottom plate are respectively fixed connection support plate, the top end of the support plate is fixedly connected support slide, the top of the support slide is provided with sliding slot, two mounting seats are respectively slidably connected in the sliding slot, the end face of two the mounting seat opposite is respectively hinged one end of transmission assembly, the other end of the transmission assembly is respectively hinged two ends of hydraulic cylinder, the hydraulic cylinder is movably arranged in the bottom between support plate, the top of the hydraulic cylinder is provided with the guide column of the fixed mounting seat bottom end, the guide column is slidably connected transmission assembly.

[0006] Preferably, the sliding slot is a T-shaped slot.

[0007] Preferably, the mounting seat is a reverse T-shaped structure, and the end face opposite to the two mounting seats is provided with a mounting groove.

[0008] Preferably, the end face opposite to the two mounting seats is respectively fixedly connected with a hinge block.

[0009] Preferably, the transmission assembly comprises a pushing link, a swing link, a hinged shaft, an arc-shaped link, a driven link, a hinged seat, a movable ring, one end of the pushing link is hingedly connected with a hinged block respectively, the other end of the pushing link is hingedly connected with one end of the swing link respectively, the other end of the swing link is hingedly connected with one end of the driven link respectively, the other end of the driven link is hingedly connected with the hinged seat respectively, the hinged seat is fixedly connected with two sides of the movable ring respectively, the movable ring is slidingly sleeved with a guide column, the corner of the swing link is fixedly connected with one end of the hinged shaft respectively, the other end of the hinged shaft is hingedly connected with a support plate respectively, the corner of the swing link is fixedly connected with one end of the arc-shaped link respectively, the other end of the arc-shaped link is hingedly connected with two ends of the hydraulic cylinder respectively.

[0010] Preferably, the swing link is of L-shaped structure, and the swing links are symmetrically arranged.

[0011] Compared with the prior art, the fatigue test of the spring is realized by driving the hydraulic cylinder, cooperating with the transmission assembly, driving the two mounting seats to reciprocate and move away from each other or move close to each other, and then repeatedly stretching and contracting the spring fixedly clamped on the mounting seat, the overall structure is simple, the hydraulic cylinder is used as a power source, and movement is more stable and has high precision. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the utility model;

[0013] Figure 2 It is a structural schematic view of the utility model support plate.

[0014] In the drawing: base plate 1, support plate 2, support sliding seat 3, mounting seat 4, hinged block 41, mounting groove 42, transmission assembly 5, pushing link 51, swing link 52, hinged shaft 53, arc-shaped link 54, driven link 55, hinged seat 56, movable ring 57, hydraulic cylinder 6, guide column 7, sliding groove 8. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0016] Embodiment 1

[0017] Reference Figure 1 , 2For the first embodiment of the utility model, the embodiment provides a kind of hydraulic power spring fatigue test device, including bottom plate 1, the top end middle part of bottom plate 1 is respectively fixedly connected with support plate 2, the top of support plate 2 is fixedly connected with support slide 3, the top of support slide 3 is provided with sliding groove 8, two mounting seats 4 are respectively slidably connected in sliding groove 8, the end face of two mounting seats 4 opposite respectively hinged one end of transmission assembly 5, the other end of transmission assembly 5 respectively hinged two ends of hydraulic cylinder 6, hydraulic cylinder 6 is movably arranged in the bottom between support plate 2, the top of hydraulic cylinder 6 is provided with the guide column 7 of the bottom end of fixed mounting seat 4, guide column 7 is slidably connected with transmission assembly 5.

[0018] The spring needing fatigue test is respectively clamped into the installation slot 42 of mounting seat 4, the spring is fixed by friction in installation slot 42, then hydraulic cylinder 6 is connected in hydraulic system, the work of transmission assembly 5 is driven by the telescopic work of hydraulic cylinder 6, transmission assembly 5 drives the reciprocating linear movement of hinged mounting seat 4 in sliding groove 8, mounting seat 4 further drives spring to repeatedly stretch and retract, and the fatigue test of spring is realized.

[0019] Embodiment 2

[0020] Refer to Figures 1-2 For the second embodiment of the utility model, the embodiment is based on the previous embodiment, specifically, sliding groove 8 is T-shaped groove, mounting seat 4 is slidably connected in sliding groove 8, and the movement of mounting seat 4 is guided.

[0021] Specifically, mounting seat 4 is inverted T-shaped structure, the end face opposite of two mounting seats 4 is provided with installation slot 42, installation slot 42 is T-shaped structure, and the two ends of the spring needing test can be clamped into installation slot 42 from the top opening, to further limit and fix the spring.

[0022] Specifically, the end face opposite of two mounting seats 4 is respectively fixedly connected with hinged block 41.

[0023] Specifically, transmission assembly 5 includes push link 51, swing link 52, hinged shaft 53, arc link 54, driven link 55, hinged seat 56 and movable ring 57, one end of push link 51 is respectively hinged with hinged block 41, the other end of push link 51 is respectively hinged with one end of swing link 52, the other end of swing link 52 is respectively hinged with one end of driven link 55, the other end of driven link 55 is respectively hinged with hinged seat 56, hinged seat 56 is respectively fixedly connected with two sides of movable ring 57, movable ring 57 is slidably sleeved with guide column 7, the corner of swing link 52 is respectively fixedly connected with one end of hinged shaft 53, the other end of hinged shaft 53 is respectively hinged with support plate 2, the corner of swing link 52 is respectively fixedly connected with one end of arc link 54, the other end of arc link 54 is respectively hinged with two ends of hydraulic cylinder 6.

[0024] Further, the swing link 52 is L-shaped structure, the swing link 52 is symmetrically arranged. The extension and retraction of the hydraulic cylinder 6 drives the work of the transmission assembly 5, the arc-shaped link 54 of the transmission assembly 5 drives the swing link 52 to swing reciprocatingly with the hinge shaft 53 as the center, the swing link 52 further drives the push link 51 to move reciprocatingly, the push link 51 drives the mounting seat 4 to move linearly in the sliding groove 8, and the mounting seat 4 further drives the spring to stretch and retract repeatedly, so that the fatigue test of the spring is realized.

[0025] Embodiment 3

[0026] With reference to Figures 1-2 For the third embodiment of the utility model, based on the above two embodiments, when in use, the spring for fatigue test is clamped into the mounting groove 42 of the mounting seat 4 at both ends, the spring is fixed and limited by friction in the mounting groove 42, then the hydraulic cylinder 6 is connected to the hydraulic system, the extension and retraction of the hydraulic cylinder 6 drives the work of the transmission assembly 5, the arc-shaped link 54 of the transmission assembly 5 drives the swing link 52 to swing reciprocatingly with the hinge shaft 53 as the center, the swing link 52 further drives the push link 51 to move reciprocatingly, the push link 51 drives the mounting seat 4 to move linearly in the sliding groove 8, and the mounting seat 4 further drives the spring to stretch and retract repeatedly, so that the fatigue test of the spring is realized.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. Hydraulic power spring fatigue testing apparatus comprising a base plate (1), characterised in that: The both sides of the middle part of the top end of the bottom plate (1) are respectively fixedly connected with support plates (2), the top end of the support plate (2) is fixedly connected with a support sliding seat (3), the top of the support sliding seat (3) is provided with a sliding groove (8), two mounting seats (4) are respectively and slidably connected in the sliding groove (8), the opposite end faces of the two mounting seats (4) are respectively hingedly connected with one end of a transmission assembly (5), the other end of the transmission assembly (5) is respectively hingedly connected with the two ends of a hydraulic cylinder (6), the hydraulic cylinder (6) is movably arranged at the bottom between the support plates (2), the top of the hydraulic cylinder (6) is provided with a guide column (7) fixedly connected with the bottom end of the mounting seat (4), and the guide column (7) is slidably connected with the transmission assembly (5).

2. The hydraulic power spring fatigue testing apparatus of claim 1, wherein: The sliding groove (8) is a T-shaped groove.

3. The hydraulic power spring fatigue testing apparatus of claim 1, wherein: The mounting seat (4) is a reverse T-shaped structure, and the opposite end faces of the two mounting seats (4) are provided with mounting grooves (42).

4. The hydraulic power spring fatigue testing apparatus of claim 1, wherein: The opposite end faces of the two mounting seats (4) are respectively fixedly connected with hinged blocks (41).

5. A hydraulic power spring fatigue testing apparatus as claimed in claim 4, wherein: The transmission assembly (5) comprises push connecting rods (51), swing connecting rods (52), hinged shafts (53), arc-shaped connecting rods (54), driven connecting rods (55), hinged seats (56) and movable rings (57), one end of the push connecting rod (51) is respectively hingedly connected with the hinged block (41), the other end of the push connecting rod (51) is respectively hingedly connected with one end of the swing connecting rod (52), the other end of the swing connecting rod (52) is respectively hingedly connected with one end of the driven connecting rod (55), the other end of the driven connecting rod (55) is respectively hingedly connected with the hinged seat (56), the hinged seat (56) is respectively fixedly connected with the two sides of the movable ring (57), the movable ring (57) is slidably sleeved with the guide column (7), the corners of the swing connecting rod (52) are respectively fixedly connected with one end of the hinged shaft (53), the other end of the hinged shaft (53) is respectively hingedly connected with the support plate (2), the corners of the swing connecting rod (52) are respectively fixedly connected with one end of the arc-shaped connecting rod (54), and the other end of the arc-shaped connecting rod (54) is respectively hingedly connected with the two ends of the hydraulic cylinder (6).

6. A hydraulic power spring fatigue testing apparatus as claimed in claim 5, wherein: The swing connecting rod (52) is an L-shaped structure, and the swing connecting rods (52) are symmetrically arranged.

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