A hydraulic cylinder fatigue performance test equipment

Abstract

The invention discloses a hydraulic cylinder fatigue performance test equipment, comprising a base, clamping mechanisms are arranged on both sides of the base, and a slide rail is connected to one side of the base, a sliding block is movably connected to the slide rail, and a pressing mechanism is fixedly connected to an outer wall of one side of the sliding block, a hydraulic cylinder is arranged on the top of the base, and the output end of the hydraulic cylinder is against the bottom end of the pressing mechanism, a color display mechanism is fixedly connected to an outer wall of one side of the slide rail, the clamping mechanism comprises a hydraulic telescopic rod and an injector, and the hydraulic telescopic rod and the injector are arranged on the inner walls of the two opposite sides of the base, the input end of the injector is connected to a liquid storage tank, and the liquid storage tank is fixed on the base, and the output end of the injector is connected to a multi-way pipe. The hydraulic cylinder fatigue performance test equipment disclosed by the invention has the effect of being adaptable to the use of hydraulic cylinders of different specifications, and can also be suitable for the stability requirements of long-term fatigue performance testing.

Description

Technical Field

[0001] The invention relates to the technical field of fatigue performance test of hydraulic oil cylinders, and in particular to a hydraulic oil cylinder fatigue performance test device. Background Art

[0002] Hydraulic cylinders are hydraulic actuators that convert hydraulic energy into mechanical energy. Hydraulic cylinders generally use hydraulic oil as the hydraulic medium to drive the actuator end of the hydraulic cylinder to reciprocate. The hydraulic cylinder has no transmission gap and moves smoothly. Generally, hydraulic cylinders with different thrusts can be used according to different load weights. In applications with small load weights, small hydraulic cylinders can be used to transmit materials.

[0003] During the production process of hydraulic cylinders, fatigue performance tests need to be conducted. When testing the fatigue performance of hydraulic cylinders, they must first be fixed on the work surface and clamped at the bottom to ensure that the clamping is stable before fatigue performance tests can be conducted for several days. Otherwise, the stability of the cylinder output end will be affected, affecting the test results. However, since different hydraulic cylinders have different specifications and even different external shapes, it is difficult to adapt to hydraulic cylinders of different specifications through conventional clamping devices. Summary of the invention

[0004] The invention discloses a hydraulic cylinder fatigue performance test device, aiming to solve the technical problem that different hydraulic cylinders have different specifications and even different external shapes, and it is difficult to adapt to hydraulic cylinders of different specifications through conventional clamping devices.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A test device for fatigue performance of hydraulic cylinder comprises a base, clamping mechanisms are arranged on both sides of the base, and a slide rail is connected to one side of the base, a slider is movably connected in the slide rail, and a pressing mechanism is fixedly connected to an outer wall of one side of the slider, a hydraulic cylinder is arranged on the top of the base, and the output end of the hydraulic cylinder abuts against the bottom end of the pressing mechanism, a color developing mechanism is fixedly connected to an outer wall of one side of the slide rail, the clamping mechanism comprises a hydraulic telescopic rod and an injector, and the hydraulic telescopic rod and the injector are arranged on the inner walls of the two opposite sides of the base, the input end of the injector is connected to a liquid storage tank, and the storage tank The liquid tank is fixed on the base, and the output end of the injector is connected to a multi-way tube. A side support plate is provided at one end of the hydraulic telescopic rod, and a plurality of extrusion plates are provided with equal density on one side of the side support plate. The plurality of extrusion plates and the side support plates are respectively connected through a second spring and a metal bellows, and the second spring surrounds the outer circumference of the metal bellows. A limiting sleeve is also provided between the extrusion plate and the side support plate. A push frame is provided between the side support plate and the hydraulic telescopic rod, and the push frame is fixedly connected to the side support plate and the output end of the hydraulic telescopic rod at the same time, and a gasket is respectively attached to the outer wall of the same side of each extrusion plate.

[0007] By providing a clamping mechanism, each side of the clamping mechanism clamps both sides of the hydraulic cylinder through multiple extrusion plates. When the hydraulic telescopic rod is started and drives the side support plates to be squeezed, the multiple extrusion plates respectively contact the outer wall of the hydraulic cylinder, and under the action of the second spring, the second springs on the multiple extrusion plates are compressed to different degrees. The combination state of the extrusion plates is changed according to the shape of the outer wall, so that it can adapt to the use of hydraulic cylinders of different specifications. After shaping, liquid is filled into the metal bellows through the injector. After filling, the valve is closed to allow the liquid to remain in the metal bellows to support the second spring and the extrusion plate, thereby ensuring the stability of the support. It is also suitable for long-term fatigue performance testing.

[0008] In a preferred embodiment, the pressing mechanism includes a pressing groove, and the pressing groove is connected to the sliding block, a plurality of weight blocks are placed at equal density in the pressing groove, and the weight block located in the middle position is arranged in the middle position of the pressing groove, a plurality of clamping blocks are arranged at equal density on the inner walls on the opposite sides of the pressing groove, and a clamping groove is arranged on the outer wall on the opposite side of each weight block, the clamping grooves are clamped with the clamping blocks in a one-to-one correspondence, and a plurality of limiting holes are arranged in the clamping groove and the clamping block on one side, and a limiting tube is arranged on the outer wall of the side clamping block, an insertion rod is inserted in each group of the limiting holes and the limiting tube, the same end of the plurality of insertion rods is connected to a support plate at the same time, and a handle is arranged on the outer wall of one side of the support plate, a plurality of first springs are arranged on the inner wall of the support plate, and the other end of the first spring is fixed to the outer wall of one side of the pressing groove at the same time.

[0009] By providing a pressing mechanism, when the hydraulic cylinder is tested, its output end is against the bottom of the pressing groove and makes it move on the slide rail. By providing multiple weight blocks of equal weight on the pressing groove, the purpose of weight regulation can be achieved by changing the number of weight blocks. The distribution of the card blocks makes it easy to adjust the center position of the pressing groove to ensure the contact between the center of gravity and the hydraulic cylinder. By inserting the rod into the limit hole, the stability of multiple weight blocks can be guaranteed during the test, thereby ensuring the measurement accuracy. After pulling out the branch plate, multiple rods can be detached at the same time, which is also convenient for the removal and addition of weight blocks, reducing the difficulty of operation.

[0010] In a preferred embodiment, the color development mechanism includes a connecting plate, and a shaping bending rod is installed on the connecting plate, one end of the shaping bending rod is connected to a mounting block, and multiple mounting blocks are connected with equal density, the inner wall of each mounting block is respectively provided with multiple ultraviolet lamps, and multiple mounting blocks are simultaneously connected with a shaping bending tube, and handles are respectively provided at both ends of the shaping bending tube.

[0011] By providing a color display mechanism, after the test is completed, when observing the appearance of the hydraulic cylinder, multiple mounting blocks are surrounded by the output port of the hydraulic cylinder by bending the shaping bending rod and continuously irradiating it with an ultraviolet lamp, so that the fluorescent powder in the hydraulic oil can be colored at the same time. Compared with irradiating one by one with a handheld lamp, this method is more convenient for observing oil leakage and further convenient for photographing and recording oil leakage.

[0012] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The hydraulic cylinder fatigue performance test equipment provided by the present invention has the technical effect of being adaptable to the use of hydraulic cylinders of different specifications and also being applicable to the stability requirements of long-term fatigue performance testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a hydraulic cylinder fatigue performance test equipment proposed by the present invention.

[0014] Figure 2 This is a schematic diagram of the color display mechanism structure of a hydraulic cylinder fatigue performance test equipment proposed by the present invention.

[0015] Figure 3 This is a schematic diagram of the disassembled structure of the pressing mechanism of a hydraulic cylinder fatigue performance test equipment proposed by the present invention.

[0016] Figure 4 The present invention provides a schematic diagram of the structure of a clamping mechanism for testing equipment for fatigue performance of hydraulic cylinders.

[0017] Figure 5 A schematic diagram of a partial clamping mechanism structure of a hydraulic cylinder fatigue performance test equipment proposed by the present invention

[0018] In the figure: 1, color development mechanism; 2, slide rail; 3, slider; 4, pressing mechanism; 5, hydraulic cylinder; 6, clamping mechanism; 7, base; 101, connecting plate; 102, shaping bending rod; 103, mounting block; 104, shaping bending tube; 105, ultraviolet lamp; 106, handle; 401, limit hole; 402, weight block; 403, slot; 404, block; 405, press Pressing groove; 406, limiting tube; 407, first spring; 408, inserting rod; 409, supporting plate; 410, handle; 601, liquid storage tank; 602, hydraulic telescopic rod; 603, injector; 604, multi-way tube; 605, pushing frame; 606, second spring; 607, metal bellows; 608, extrusion plate; 609, gasket; 610, limiting sleeve; 611, side supporting plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] A hydraulic cylinder fatigue performance test device disclosed in the present invention is mainly used in the scenario of hydraulic cylinder fatigue performance test.

[0021] Reference Figure 1 , Figure 4 and Figure 5A hydraulic cylinder fatigue performance test device comprises a base 7, a clamping mechanism 6 is arranged on both sides of the base 7, a slide rail 2 is connected to one side of the base 7, a slider 3 is movably connected in the slide rail 2, and a pressing mechanism 4 is fixedly connected to the outer wall of one side of the slider 3, a hydraulic cylinder 5 is arranged on the top of the base 7, and the output end of the hydraulic cylinder 5 is against the bottom end of the pressing mechanism 4, a color developing mechanism 1 is fixedly connected to the outer wall of one side of the slide rail 2, and the clamping mechanism 6 comprises a hydraulic telescopic rod 602 and an injector 60 3, and the hydraulic telescopic rod 602 and the injector 603 are arranged on the inner walls of the two opposite sides of the base 7, the input end of the injector 603 is connected to the liquid storage tank 601, and the liquid storage tank 601 is fixed on the base 7, the output end of the injector 603 is connected to the multi-way pipe 604, one end of the hydraulic telescopic rod 602 is provided with a side support plate 611, and one side of the side support plate 611 is provided with a plurality of extrusion plates 608 of equal density, and the plurality of extrusion plates 608 and the side support plates 611 are respectively connected by second springs 606 and The metal bellows 607 is connected, and the second spring 606 surrounds the outer circumference of the metal bellows 607. A limiting sleeve 610 is simultaneously arranged between the extrusion plate 608 and the side support plate 611. Each side of the clamping mechanism 6 clamps the two sides of the hydraulic cylinder 5 through multiple extrusion plates 608. During the process of the hydraulic telescopic rod 602 starting and driving the side support plate 611 to squeeze, the multiple extrusion plates 608 contact the outer wall of the hydraulic cylinder 5 respectively, and under the action of the second spring 606, the second springs 606 on the multiple extrusion plates 608 are compressed to different degrees. The combination state of the extrusion plates 608 is changed according to the shape of the outer wall, so that it can adapt to the use of hydraulic cylinders 5 of different specifications. After shaping, liquid is filled into the metal bellows 607 through the injector 603. After filling, the valve is closed so that the liquid remains in the metal bellows 607 to support the second spring 606 and the extrusion plate 608, thereby ensuring the stability of the support and being suitable for long-term fatigue performance testing.

[0022] Reference Figure 4 and Figure 5 In a preferred embodiment, a push frame 605 is provided between the side support plate 611 and the hydraulic telescopic rod 602, and the push frame 605 is fixedly connected to the output ends of the side support plate 611 and the hydraulic telescopic rod 602 at the same time, and a gasket 609 is respectively attached to the outer wall of the same side of each extrusion plate 608.

[0023] Reference Figure 3 In a preferred embodiment, the pressing mechanism 4 includes a pressing groove 405, and the pressing groove 405 is connected to the slider 3, and a plurality of weight blocks 402 are placed at equal density in the pressing groove 405, and the weight block 402 located in the middle position is set in the middle position of the pressing groove 405.

[0024] Reference Figure 3In a preferred embodiment, the inner walls on both sides of the pressing groove 405 are provided with a plurality of blocks 404 at equal density, and the outer walls on the opposite sides of each weight block 402 are provided with a slot 403, and the slot 403 is connected with the block 404 in a one-to-one correspondence.

[0025] Reference Figure 3 In a preferred embodiment, a plurality of limiting holes 401 are simultaneously provided in one side slot 403 and the block 404, and limiting tubes 406 are respectively provided on the outer walls of the side block 404, and an insertion rod 408 is simultaneously inserted in each group of limiting holes 401 and limiting tubes 406.

[0026] Reference Figure 3 In a preferred embodiment, the same end of the plurality of plug rods 408 is connected to a support plate 409, and a handle 410 is provided on one side outer wall of the support plate 409, and a plurality of first springs 407 are provided on the inner wall of the support plate 409, and the other end of the first spring 407 is fixed to one side outer wall of the pressing groove 405. When the hydraulic cylinder 5 is tested, its output end abuts against the bottom end of the pressing groove 405 and moves it on the slide rail 2. By arranging a plurality of equal-weight load blocks 405 on the pressing groove 405, 02, the purpose of load regulation can be achieved by changing the number of weight blocks 402, and the distribution of the clamping block 404 makes it easy to adjust the center position of the pressing groove 405 to ensure that the center of gravity is in contact with the hydraulic cylinder 5. The insertion rod 408 into the limiting hole 401 can ensure the stability of multiple weight blocks 402 during the test, thereby ensuring measurement accuracy. After pulling out the branch plate 409, multiple insertion rods 408 can be detached at the same time, which is also convenient for the removal and addition of the weight block 402 and reduces the difficulty of operation.

[0027] Reference Figure 2 In a preferred embodiment, the color development mechanism 1 includes a connecting plate 101, and a shaping bending rod 102 is installed on the connecting plate 101, one end of the shaping bending rod 102 is connected to a mounting block 103, and multiple mounting blocks 103 are connected with equal density.

[0028] Reference Figure 2 In a preferred embodiment, the inner wall of each mounting block 103 is respectively provided with a plurality of ultraviolet lamps 105, and the plurality of mounting blocks 103 are simultaneously connected with a shaping bending tube 104, and handles 106 are respectively provided at both ends of the shaping bending tube 104. After the test is completed, when observing the appearance of the hydraulic cylinder 5, the plurality of mounting blocks 103 are surrounded at the output port position of the hydraulic cylinder 5 by bending the shaping bending rod 102, and continuously irradiated by the ultraviolet lamp 105, so that the fluorescent powder in the hydraulic oil can be colored at the same time. Compared with irradiating one by one with a handheld lamp, this method is more convenient for observing oil leakage, and further convenient for photographing and recording oil leakage.

[0029] Working principle: During the test, each side of the clamping mechanism 6 clamps the two sides of the hydraulic cylinder 5 through multiple squeezing plates 608. When the hydraulic telescopic rod 602 is started and drives the side support plate 611 to squeeze, the multiple squeezing plates 608 contact the outer wall of the hydraulic cylinder 5 respectively, and under the action of the second spring 606, the second spring 606 on the multiple squeezing plates 608 is compressed to different degrees. The combination state of the squeezing plates 608 is changed according to the shape of the outer wall, so that it can adapt to the use of hydraulic cylinders 5 of different specifications. After shaping, liquid is filled into the metal bellows 607 through the injector 603. After filling, the valve is closed so that the liquid remains in the metal bellows 607 to support the second spring 606 and the squeezing plate 608, thereby ensuring the stability of the support. It is also suitable for long-term fatigue performance testing. When the hydraulic cylinder 5 is tested, its output end is against the bottom end of the pressing groove 405, and it moves on the slide rail 2. A plurality of weight blocks 402 of equal weight are arranged on the pressing groove 405, and the purpose of load regulation can be achieved by changing the number of weight blocks 402, and the distribution of the card block 404 makes it easy to adjust the center position of the pressing groove 405 to ensure that the center of gravity contacts the hydraulic cylinder 5, and the insertion rod 408 into the limit hole 401 can ensure the stability of the plurality of weight blocks 402 during the test, thereby ensuring the measurement accuracy, and after pulling out the branch plate 409, the plurality of insertion rods 408 can be detached at the same time, which is also convenient for the removal and addition of the weight blocks 402 and reduces the difficulty of operation. After the test is completed, when observing the appearance of the hydraulic cylinder 5, the plurality of mounting blocks 103 are surrounded at the output port position of the hydraulic cylinder 5 by bending and shaping the bending rod 102, and continuously irradiated by the ultraviolet lamp 105, so that the fluorescent powder in the hydraulic oil can be colored at the same time, and compared with the irradiation of handheld lamps one by one, this method is more convenient for observing oil leakage, and further convenient for photographing and recording oil leakage.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic cylinder fatigue performance test device, comprising a base (7), characterized in that: Clamping mechanisms (6) are provided on both sides of the base (7), and a slide rail (2) is connected to one side of the base (7), a slider (3) is movably connected inside the slide rail (2), and a pressing mechanism (4) is fixedly connected to one side outer wall of the slider (3), a hydraulic cylinder (5) is provided at the top of the base (7), and the output end of the hydraulic cylinder (5) abuts against the bottom end of the pressing mechanism (4), a color development mechanism (1) is fixedly connected to one side outer wall of the slide rail (2), the clamping mechanism (6) comprises a hydraulic telescopic rod (602) and an injector (603), and the hydraulic telescopic rod (602) and the injector (603) are respectively arranged on the inner walls of the two opposite sides of the base (7), and the injector (60 3) is connected to a liquid storage tank (601), and the liquid storage tank (601) is fixed on the base (7), the output end of the liquid injector (603) is connected to a multi-way pipe (604), one end of the hydraulic telescopic rod (602) is provided with a side support plate (611), and a plurality of extrusion plates (608) are provided at equal density on one side of the side support plate (611), the plurality of extrusion plates (608) and the side support plates (611) are connected to each other through a second spring (606) and a metal bellows (607), and the second spring (606) surrounds the outer periphery of the metal bellows (607), and a limiting sleeve (610) is provided between the extrusion plate (608) and the side support plate (611); The pressing mechanism (4) comprises a pressing groove (405), and the pressing groove (405) is connected to the slider (3), a plurality of weight blocks (402) are placed in the pressing groove (405) at equal density, and the weight block (402) located in the middle is arranged in the middle position of the pressing groove (405); The inner walls on the two opposite sides of the pressing groove (405) are respectively provided with a plurality of clamping blocks (404) at equal density, and the outer wall on the opposite side of each load-bearing block (402) is respectively provided with a clamping groove (403), and the clamping groove (403) is clamped with the clamping block (404) in a one-to-one corresponding manner; A plurality of limiting holes (401) are simultaneously arranged in the clamping groove (403) and the clamping block (404) on one side, and limiting tubes (406) are respectively arranged on the outer wall of the side clamping block (404), and an insertion rod (408) is simultaneously inserted into each group of the limiting holes (401) and the limiting tube (406); The same end of the plurality of insertion rods (408) is simultaneously connected to a support plate (409), and a handle (410) is provided on one side outer wall of the support plate (409), and a plurality of first springs (407) are provided on the inner wall of the support plate (409), and the other end of the first spring (407) is simultaneously fixed to one side outer wall of the pressing groove (405); The color development mechanism (1) comprises a connecting plate (101), and a shaping bending rod (102) is installed on the connecting plate (101), one end of the shaping bending rod (102) is connected to a mounting block (103), and a plurality of mounting blocks (103) are connected at equal density; The inner wall of each mounting block (103) is respectively provided with a plurality of ultraviolet lamps (105), and the plurality of mounting blocks (103) are simultaneously connected to a shaping bending tube (104), and handles (106) are respectively provided at both ends of the shaping bending tube (104).

2. A hydraulic cylinder fatigue performance test equipment according to claim 1, characterized in that: A push frame (605) is provided between the side support plate (611) and the hydraulic telescopic rod (602), and the push frame (605) is fixedly connected to the output ends of the side support plate (611) and the hydraulic telescopic rod (602) at the same time, and a gasket (609) is respectively attached to the outer wall of the same side of each extrusion plate (608).

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