Microcomputer controlled electro-hydraulic servo universal testing machine

Abstract

The present application relates to the technical field of detection equipment, and discloses a microcomputer-controlled electro-hydraulic servo universal testing machine, which comprises a base and two upright columns arranged on the upper part of the base, characterized in that an upper cross beam, a middle cross beam and a lower cross beam are sequentially arranged between the two upright columns from top to bottom, the upper cross beam is fixedly arranged on the top of the upright column, a sliding column is arranged on the inner side of the upright column, the middle cross beam and the lower cross beam are in sliding cooperation with the sliding column, one clamping mechanism is arranged in the middle of the middle cross beam and the lower cross beam respectively, and the openings of the two clamping mechanisms are oppositely arranged, and a damping mechanism is arranged between the lower cross beam and the base. The jaw of the microcomputer-controlled electro-hydraulic servo universal testing machine can realize stable clamping of the material, and the clamping process is not prone to loosening, and the replacement of the clamping piece is simple, time-saving and labor-saving. In addition, the cross beam does not directly impact the base after the sample is pulled off, thereby playing a protective role on the detection instrument.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection equipment, in particular to a microcomputer-controlled electro-hydraulic servo universal testing machine.

[0002] The microcomputer-controlled electro-hydraulic servo universal testing machine is a mechanical testing machine capable of performing tensile, compression, bending and torsion tests, and is mainly used for testing the mechanical properties of metal and non-metal materials. It is widely used in the fields of construction, metallurgy, automobiles, machinery and technical monitoring, and is also the main detection equipment for mechanical laboratories in scientific research departments and colleges and universities. The mechanical properties of various materials can be measured on the universal material testing machine. Chinese Patent Publication No. CN206583715 discloses a microcomputer-controlled electro-hydraulic servo universal testing machine, which includes a microcomputer-controlled electro-hydraulic servo universal testing machine body having a plurality of jaw clamping portions on it to form two symmetrical clamping ends for clamping the metal wire to be tested in space. A plurality of clamps of different sizes are detachably arranged in cooperation with each jaw clamping portion. In this technical solution, the clamps are used to clamp the wire, and since the diameters of the wires are different, a plurality of clamps with different clamping specifications are used to meet the specific sample requirements. However, the test machine may have clamping looseness and shaking problems during the clamping process of the sample, and the installation and removal of a plurality of clamps of different sizes requires the installation and removal of a large number of screws, making the replacement process more complicated. In addition, after the sample is broken, the cross beam will hit the base, causing damage to the instrument. SUMMARY

[0003] The present application is to overcome the above problems of the prior art and provide a microcomputer-controlled electro-hydraulic servo universal testing machine. The jaw of the microcomputer-controlled electro-hydraulic servo universal testing machine can stably clamp the material, and the clamping process is not prone to looseness. The replacement process is simple, time-saving and labor-saving. In addition, after the sample is broken, the cross beam will not directly hit the base, thereby protecting the detection instrument.

[0004] In order to achieve the above purpose, the present application adopts the following technical solution: a microcomputer-controlled electro-hydraulic servo universal testing machine, including a base and two vertical columns arranged on the upper part of the base, characterized in that an upper cross beam, a middle cross beam and a lower cross beam are sequentially arranged between the vertical columns from top to bottom, the upper cross beam is fixedly arranged at the top of the vertical column, a sliding column is arranged on the inner side of the vertical column, the middle cross beam and the lower cross beam are in sliding cooperation with the sliding column, a clamping mechanism is arranged in the middle of the middle cross beam and the lower cross beam, and the openings of the two clamping mechanisms are oppositely arranged, and a damping mechanism is arranged between the lower cross beam and the base.

[0005] As preferred, the damping mechanism comprises a compression spring groove, a first compression spring, a second compression spring and a screw, each side of the base is provided with a placing groove, the compression spring groove is upwardly open and fixedly connected to the bottom of the lower cross beam, the lower end of the screw is fixedly connected to the bottom of the placing groove perpendicularly through the bottom of the compression spring groove, the first compression spring is arranged in the compression spring groove, the second compression spring is arranged between the bottom of the compression spring groove and the bottom of the placing groove, and the first compression spring and the second compression spring are both sleeved on the outside of the screw.

[0006] The damping mechanism is arranged between the lower cross beam and the base, and after the sample is stretched and broken, the damping mechanism plays a buffering role between the lower cross beam and the base, so that the lower cross beam does not directly impact the base, and damage to the instrument is avoided.

[0007] As preferred, the clamping mechanism comprises a working groove arranged on the middle cross beam or the lower cross beam, the two side walls of the working groove are oppositely arranged in an inclined manner to form an "eight" shape, each of the two side walls of the working groove is provided with a clamping piece clamping plate which slides up and down along the side wall in an inclined manner, the inner side of the clamping piece clamping plate is fixedly provided with a clamping plate, the inner side of the clamping plate is provided with a clamping jaw, the clamping piece clamping plate is provided with a driving device, and the driving device drives the clamping piece clamping plate to slide up and down along the two side walls of the working groove so that the clamping plates on the two clamping piece clamping plates are close to or away from each other.

[0008] The process of clamping the sample of the universal testing machine is that when the driving device lifts the clamping piece clamping plate upward, the clamping piece clamping plate slides upward along the two side walls of the working groove in an inclined manner, and since the two side walls form an inverted "eight" shape, the two clamping piece clamping plates gradually move away from each other during the upward movement in an inclined manner, so that the jaws on the clamping plates are opened, the sample to be tested is placed, then the driving device presses the clamping piece clamping plate downward, the clamping piece clamping plate slides downward along the two side walls of the working groove in an inclined manner, and the two clamping piece clamping plates gradually move close to each other during the downward movement in an inclined manner, so that the jaws on the clamping plates are combined to clamp and fix the sample.

[0009] As preferred, the inner side of the clamping piece clamping plate is provided with a clamping groove, the clamping plate is provided with a connecting part matched with the clamping groove, and the clamping piece clamping plate is connected with the clamping plate. The conventional connection mode of the clamping piece clamping plate and the clamping plate is screwing, but more screws are needed for fixing, and more screws need to be disassembled and assembled during replacement of the clamping plate, and the replacement operation is complicated. By arranging the clamping groove on the inner side of the clamping piece clamping plate and arranging the connecting part on the clamping plate, the connecting part is clamped in the clamping groove, so that the clamping plate and the clamping piece clamping plate are connected through the clamping mode, and the time for replacing the clamping plate is greatly shortened, and the operation is simple.

[0010] As preferred, the bottom of the clamping groove is provided with a positioning pin. The positioning pin can improve the accuracy of the angle of the clamping plate installed on the clamping piece clamping plate, and avoid misalignment of the two clamping piece clamping plates during clamping of the sample, which causes the sample to be clamped loose.

[0011] As preferred, the clamping piece card plate is provided with a through hole communicating with the inside of the clamping groove on the side close to the opening of the working groove, the connecting part is provided with a bolt slot corresponding to the through hole, and the through hole is provided with a bolt matched with the through hole, the bolt passes through the through hole and enters the bolt slot to fix the clamping piece card plate relative to the card plate. The clamping piece card plate and the card plate are further fixed through the bolt, and the stability of the connection between the two is further improved, so that the shaking between the clamping piece card plate and the card plate is avoided to affect the detection of the performance of the sample.

[0012] As preferred, the through hole is provided with a spring, the spring is sleeved outside the bolt, one end of the spring is fixed in the through hole, and the other end is fixedly connected with the bolt.

[0013] As preferred, a wear-resistant lining plate is arranged between the side wall of the working groove and the clamping piece card plate. The wear-resistant lining plate has good wear resistance, and the wear of the side wall is avoided during the sliding of the clamping piece card plate on the inclined side wall.

[0014] As preferred, the bottom of the working groove is provided with a first pressing plate, the opening of the working groove is provided with a second pressing plate close to each side wall, and the clamping piece card plate is located between the first pressing plate and the second pressing plate and is in sliding connection with the first pressing plate and the second pressing plate. The first pressing plate and the second pressing plate can ensure the stability of the clamping piece card plate, and the shaking and deviation of the clamping piece card plate during the sliding of the clamping piece card plate on the inclined side wall are avoided.

[0015] As preferred, the driving device comprises an oil cylinder and a toggle, a free end of a piston rod of the oil cylinder is fixedly connected with the toggle through the bottom of the working groove, each of the two clamping piece card plates is provided with a sliding groove oppositely arranged and opening inward, and the toggle is arranged in the sliding groove and is in sliding cooperation with the sliding groove in the horizontal direction.

[0016] The microcomputer controlled electro-hydraulic servo universal testing machine has the following advantages: (1) the jaw of the microcomputer controlled electro-hydraulic servo universal testing machine can realize stable clamping of the material, and the clamping process is not prone to looseness, thereby improving the accuracy of the performance test of the material; (2) different sizes of materials can be clamped by replacing the clamping piece, and the replacement process is simple, time-saving and labor-saving; (3) the cross beam does not directly impact the base after the sample is broken, thereby playing a protection role on the detection instrument. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the microcomputer controlled electro-hydraulic servo universal testing machine.

[0018] Figure 2 is a structural schematic view of the base of the microcomputer controlled electro-hydraulic servo universal testing machine.

[0019] Figure 3 is Figure 2 is an enlarged local structural schematic view of B in the microcomputer controlled electro-hydraulic servo universal testing machine.

[0020] Figure 4 The present invention is a schematic structural diagram of a clamping mechanism of a microcomputer-controlled electro-hydraulic servo universal testing machine.

[0021] Figure 5 yes Figure 4 Schematic diagram of the AA cross-section structure.

[0022] Figure 6 yes Figure 4 Schematic diagram of the BB cross-section structure.

[0023] Figure 7 yes Figure 5 Schematic diagram of the locally enlarged structure at point A in the middle.

[0024] Reference numerals

[0025] Base 100, column 200, upper crossbeam 300, middle crossbeam 400, lower crossbeam 500, sliding column 600, clamping mechanism 700, shock absorbing mechanism 800, compression spring groove 801, first compression spring 802, second compression spring 803, screw 804, placement groove 101, working groove 701, clip plate 702, clip plate 703, clamping jaws 704, drive device 705, slot 706, connecting part 707, locating pin 708, through hole 709, latch slot 710, latch 711, spring 712, wear-resistant lining 713, first pressure plate 714, second pressure plate 715, cylinder 716, paddle 717, slide groove 718. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to specific embodiments and the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Furthermore, the embodiments of the present invention described below are generally only a portion of the embodiments of the present invention, rather than all of the embodiments. Therefore, all other embodiments derived by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "thickness," "upper," "lower," "horizontal," "top," "bottom," "inner," "outer," "circumferential," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, "plurality" means at least two, such as two or three, and unless otherwise expressly specified, "several" means one or more.

[0028] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicated with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Embodiment

[0030] As Figure 1 It is a structural schematic diagram of a microcomputer controlled electro-hydraulic servo universal testing machine of the present application, which comprises a base 100 and two vertical columns 200 arranged on the upper part of the base, characterized in that an upper cross beam 300, a middle cross beam 400 and a lower cross beam 500 are sequentially arranged from top to bottom between the vertical columns, the upper cross beam is fixedly arranged at the top of the vertical column, a slide column 600 is arranged inside the vertical column, the middle cross beam and the lower cross beam are in sliding cooperation with the slide column, a clamping mechanism 700 is arranged in the middle of the middle cross beam and the lower cross beam respectively, and the openings of the two clamping mechanisms are oppositely arranged, and a damping mechanism 800 is arranged between the lower cross beam and the base. Figure 2 , and the structural schematic diagram of the base of the microcomputer controlled electro-hydraulic servo universal testing machine of the present application is shown in Fig. 3, and the enlarged partial structural schematic diagram of B in Fig. 3 is shown in Fig. 4, the damping mechanism comprises a compression spring groove 801, a first compression spring 802, a second compression spring 803 and a screw 804, a placing groove 101 is arranged on each side of the base, the compression spring groove is upwardly arranged and fixedly connected at the bottom of the lower cross beam, the lower end of the screw is fixedly connected with the bottom of the placing groove perpendicularly through the bottom of the compression spring groove, the first compression spring is arranged inside the compression spring groove, the second compression spring is arranged between the bottom of the outside of the compression spring groove and the bottom of the placing groove, and the first compression spring and the second compression spring are sleeved outside the screw. Figure 2

[0031] Figure 4 、 Figure 5 、 Figure 6 ​Respectively be the structure schematic drawing of microcomputer control electro-hydraulic servo universal testing machine clamping mechanism of the application, A-A section structure schematic diagram, B-B section structure schematic diagram, clamping mechanism includes the working groove 701 that sets up on the middle crossbeam or lower crossbeam, the two side walls of the working groove are obliquely opposite and are provided as "eight" character, the two side walls of the working groove are each equipped with one clamping piece clamping plate 702 that slides obliquely up and down along the side wall, wear-resistant lining plate 713 is equipped between the side wall of the working groove and the clamping piece clamping plate, the wear-resistant lining plate has good wear resistance, avoids the abrasion of the side wall in the process of the oblique up and down sliding of the clamping piece clamping plate;The bottom of the working groove is equipped with a first pressing plate 714, the opening of the working groove is equipped with a second pressing plate 715 near the position of two side walls, the clamping piece clamping plate is located between the first pressing plate and the second pressing plate and is slidably connected with them, the first pressing plate and the second pressing plate can ensure the stability of the clamping piece clamping plate, avoid the shaking and deviation of the clamping piece clamping plate in the process of the oblique up and down sliding of the side wall. The inner side of the clamping piece clamping plate is fixedly provided with a clamping plate 703, the inner side of the clamping plate is provided with a clamping jaw 704, the clamping jaw is used for clamping different specifications of sample, the inner side of the clamping piece clamping plate is provided with a clamping groove 706, the clamping groove is preferably a circular clamping groove, the clamping plate is provided with a connecting part 707 matched with the clamping groove, the connecting part is clamped in the inside of the clamping groove, the clamping piece clamping plate is clamped with the clamping plate, the bottom of the clamping groove is provided with a positioning pin 708, the positioning pin can improve the accuracy of the angle of the clamping plate installed on the clamping piece clamping plate, avoid the misplacement of the two clamping piece clamping plates in the process of clamping the sample, leading to the loose clamping of the sample. The side of the clamping piece clamping plate near the opening of the working groove is provided with a through hole 709 communicating with the inside of the clamping groove, Figure 7 is Figure 5The local enlarged structure schematic view at the middle A, the connecting part is provided with the latch slot 710 corresponding to the through hole, the through hole is provided with the latch 711 corresponding to the through hole, the latch passes through the through hole and enters the latch slot, so that the clamping piece clamp plate is fixed relative to the clamp plate, the through hole is provided with the spring 712, the spring is sleeved outside the latch, one end of the spring is fixed in the through hole, and the other end is fixedly connected with the latch; The latch is preferably a knob plunger, the replacement process of the clamp plate is that the latch is pulled outwards first, the latch leaves the latch slot, the clamp plate is taken off from the clamping groove of the clamping piece clamp plate, then other specifications of the clamp plate are put into the clamping groove through the positioning pin, the latch is loosened, the latch is reset with the spring arranged in the through hole, the end of the latch enters the latch slot on the connecting part on the clamp plate, so that the clamp plate is fixed relative to the clamping piece clamp plate, the replacement operation is simple, and the connection between the clamp plate and the clamping piece clamp plate is stable, and shaking does not occur, the stability of the clamp plate in clamping the sample is improved. The clamping piece clamp plate is provided with a driving device 705, the driving device includes an oil cylinder 716 and a lever 717, a free end of a piston rod of the oil cylinder is fixedly connected with the lever through the bottom of the working groove, each of the two clamping piece clamp plates is provided with a sliding groove 718 oppositely arranged and opening inward, the lever is arranged in the sliding groove and is in sliding fit with the sliding groove in the horizontal direction, the driving device drives the clamping piece clamp plate to slide up and down along the two side walls of the working groove, so that the clamp plates on the two clamping piece clamp plates are close to or away from each other. The process that the universal testing machine clamps the sample body is that when the driving device lifts the clamping piece clamp plate upward, the clamping piece clamp plate slides upward along the two side walls of the working groove, because the two side walls are in inverted V shape, the two clamping piece clamp plates gradually move away from each other during the upward movement, and then the jaws on the clamp plate are opened, so that the sample to be tested is placed, and then the driving device presses the clamping piece clamp plate downward, the clamping piece clamp plate slides downward along the two side walls of the working groove, the two clamping piece clamp plates gradually move close to each other during the downward movement, and then the jaws on the clamp plate are combined to clamp and fix the sample.

[0032] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A microcomputer-controlled electro-hydraulic servo universal testing machine, comprising a base (100) and columns (200) arranged on both sides of the upper portion of the base, characterized in that: An upper crossbeam (300), a middle crossbeam (400) and a lower crossbeam (500) are sequentially arranged between the columns from top to bottom. The upper crossbeam is fixedly arranged on the top of the column. A sliding column (600) is arranged on the inner side of the column. The middle crossbeam and the lower crossbeam are both slidably matched with the sliding column. A clamping mechanism (700) is respectively arranged in the middle of the middle crossbeam and the lower crossbeam, and the openings of the two clamping mechanisms are arranged opposite to each other. A shock absorbing mechanism (800) is provided between the lower crossbeam and the base. The clamping mechanism includes a working groove (701) provided on the middle crossbeam or the lower crossbeam, the two side walls of the working groove are inclined relative to each other in an "eight" shape, a clip card (702) is provided on each side wall of the working groove and slides up and down along the side wall, a wear-resistant lining (713) is provided between the side wall of the working groove and the clip card, a first pressing plate (714) is provided at the bottom of the working groove, a second pressing plate (715) is provided at the opening of the working groove near the two side walls, the clip card is located between the first pressing plate and the second pressing plate and is slidably connected thereto, a card plate (703) is fixed on the inner side of the clip card, a clamping jaw (704) is provided on the inner side of the card plate, the clamping jaw is used to clamp samples of different specifications and thicknesses, a card slot (706) is provided on the inner side of the clip card plate, the card slot is a circular card slot, a connecting portion (707) adapted to the card slot is provided on the card plate, and the connecting portion is clamped inside the card slot The clamping plate is connected to the card board, and a positioning pin (708) is provided at the bottom of the card slot. A through hole (709) communicating with the inside of the card slot is provided on the side of the clamping plate close to the opening of the working slot. A latch groove (710) corresponding to the through hole is provided on the connecting portion, and a latch (711) adapted to the through hole is provided in the through hole. The latch passes through the through hole and enters the latch groove to fix the clamping plate and the card board relatively. A spring (712) is provided inside the through hole. The spring is sleeved on the outside of the latch, one end of the spring is fixed inside the through hole, and the other end is fixedly connected to the latch. The latch is a knob plunger. The replacement process of the card board is to first pull the latch outward, the latch leaves the latch groove, remove the card board from the card slot of the clamping plate, and then put a card board of other specifications into the card slot through the positioning pin, release the latch, and the latch is reset along with the spring provided in the through hole. The end of the latch enters the latch groove on the connecting portion of the card board, thereby fixing the card board and the clamping plate relatively. The shock-absorbing mechanism includes a compression spring groove (801), a first compression spring (802), a second compression spring (803) and a screw (804). A placement groove (101) is provided on each side of the base. The opening of the compression spring groove is upwardly arranged and fixedly connected to the bottom of the lower crossbeam. The lower end of the screw passes through the bottom of the compression spring groove and is vertically fixedly connected to the bottom of the placement groove. The first compression spring is arranged inside the compression spring groove, and the second compression spring is located between the outer bottom of the compression spring groove and the bottom of the placement groove. The first compression spring and the second compression spring are both sleeved on the outside of the screw.

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