Microcomputer-controlled electro-hydraulic servo horizontal tension tester

Abstract

The utility model discloses a microcomputer-controlled electro-hydraulic servo horizontal tension testing machine, and relates to the technical field of tension testing machines, in particular to a microcomputer-controlled electro-hydraulic servo horizontal tension testing machine, which comprises a tension testing machine and is used for testing tensile strength. Comprising racks fixed to the two sides of the front end of a machine base, a fixed plate fixed between the front ends of the racks on the two sides, a movable plate installed between the racks on the two sides in a sliding mode and lead screws rotationally installed in the racks, and the lead screws and the movable plate are installed in a threaded mode. The execution assembly comprises a seat body mounted on the fixed plate and the movable plate, and chutes which are formed in two sides of the lower end in the seat body and are symmetrical to each other; the sector gear is driven to rotate by pulling the handle, the sector gear drives the clamping head to move through the rack rod, and meanwhile the clamping head clamps a sample through cooperation of the protruding block and the inclined groove. Moreover, the force in the subsequent stretching process can continuously drive the chucks on the two sides to clamp the sample.

Description

Technical Field

[0001] The utility model relates to the technical field of tensile testing machines, in particular to a microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine. Background Technique

[0002] The horizontal tensile testing machine clamps the specimen through a fixture, and then applies a tensile load, so that the specimen is subjected to a tensile force in the horizontal direction. During the test, the testing machine measures and records the force value and displacement change of the specimen in real time, so as to obtain the tensile performance curve and related parameters of the specimen;

[0003] After inquiry, the publication number: CN220568533U discloses a large-tonnage horizontal tensile testing machine. In this technology, "a large-tonnage horizontal tensile testing machine includes a machine shell, a fixture assembly, and a tensile disc assembly. A tensile sensor, a control board, and a servo electric cylinder are arranged in the machine shell. The top of the machine shell has a first plane and a second plane; a display screen is arranged at the left part of the front side of the top surface of the first platform, and a long strip groove is longitudinally opened at the right part of the front side of the top surface of the first platform. A sliding mechanism connected to the servo electric cylinder is arranged in the long strip groove. The fixture assembly is arranged on the top of the sliding mechanism. The tensile disc assembly is located at the rear side of the top of the first platform, and its fixed end passes through the front side wall of the second platform and is arranged on the tensile sensor; the tensile sensor, the servo electric cylinder, and the display screen are respectively connected to the control board" and other technical solutions, and have technical effects such as "only two fixtures, a display screen, and buttons are reserved outside the machine shell, and the tensile sensor, the servo electric cylinder, and even the slide rail are arranged inside the machine shell. The design of simplifying the external functional components is convenient for personnel to operate".

[0004] The above solution uses a fixture adjusted by a screw to clamp and fix the specimen, resulting in that under the action of an excessive tensile force, the thread of the matching part between the screw and the slider on the clamping jaw may bear a shear force exceeding its material strength, causing the thread to be cut off or severely deformed, resulting in an unstable stress state of the specimen during the stretching process, thereby affecting the accuracy of the test results. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine, which has the characteristics that by pulling the handle to drive the sector gear to rotate, the sector gear drives the chuck to move through the rack bar, and at the same time, the chuck clamps the specimen through the convex block cooperating with the inclined groove; and, the force during the subsequent stretching process will continuously drive the chucks on both sides to clamp the specimen.

[0006] To achieve the above purposes, the utility model is realized through the following technical solutions: a microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine, including a tensile testing machine and used for tensile strength testing, the tensile testing machine includes:

[0007] The main body assembly includes a frame fixed to both sides of the front end of the machine base, a fixed plate fixed between the front ends of the two frames on both sides, a movable plate slidably installed between the two frames on both sides, a lead screw rotatably installed inside the frame, and the lead screw is threadedly installed with the movable plate;

[0008] The execution assembly includes a seat body installed on the fixed plate and the movable plate, symmetrically arranged inclined grooves opened on both sides at the lower end inside the seat body, bumps slidably installed inside the inclined grooves, chucks fixed to the tops of the bumps, a rack bar slidably installed inside the seat body, a sector gear rotatably installed at the upper end of the seat body, and the sector gear is meshed and driven with the rack bar, and a handle fixed to the upper end of the sector gear;

[0009] The driving assembly includes a seat body fixed to the rear end of the lead screw.

[0010] Preferably, the execution assembly further includes a card slot opened on the chuck, a card head fixed to the front end of the rack bar, and the card head is located inside the card slot, and limit blocks are installed on both sides at the upper end inside the seat body.

[0011] Preferably, the driving assembly further includes a mounting bracket fixed inside the machine base, a transmission small pulley rotatably installed in the middle of the rear end of the mounting bracket, a guide pulley rotatably installed on the right side of the rear end of the mounting bracket, a tension pulley installed on the left side of the rear end of the mounting bracket, and a first belt installed between the two execution wheels, the transmission small pulley, the guide pulley and the tension pulley.

[0012] Preferably, the driving assembly further includes a transmission large pulley rotatably installed in the middle of the front end of the mounting bracket, and the transmission large pulley is fixed to the transmission small pulley, a servo motor installed at the rear end of the mounting bracket, a driving pulley fixed to the output end of the servo motor, and a second belt installed between the driving pulley and the transmission large pulley.

[0013] Preferably, the main body assembly further includes a chute opened on the top of the frame, a protective cover slidably installed on the upper ends of the two frames through the chute, a support seat fixed to the front end of the fixed plate, and a control panel installed on the outer wall of the machine base.

[0014] Preferably, the tensile testing machine further includes a hydraulic cylinder installed at the front end of the machine base, and a force value sensor installed between the output end of the hydraulic cylinder and the movable plate.

[0015] Beneficial effects

[0016] The utility model provides a microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine. Compared with the prior art, it has the following beneficial effects:

[0017] (1) After the end of the specimen is placed between the chucks on both sides inside the seat body, by pulling the handle to drive the sector gear to rotate, the sector gear drives the card head to move through the rack bar, and at the same time, the card head clamps the specimen through the bump cooperating with the inclined groove; and, the force during the subsequent stretching process will continuously drive the chucks on both sides to clamp the specimen.

[0018] (2) The chuck can be taken out of the seat body for replacement by disassembling the limit block; moreover, the rack bar is connected to the chuck by being clamped into the card slot by the chuck head, avoiding affecting the disassembly and assembly of the chuck. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 It is a structural schematic diagram inside the tensile testing machine of the present utility model;

[0021] Figure 3 It is a structural schematic diagram of the drive assembly of the present utility model;

[0022] Figure 4 It is a structural schematic diagram of the execution assembly of the present utility model;

[0023] Figure 5 It is a structural schematic diagram inside the execution assembly of the present utility model.

[0024] In the figure: 1, tensile testing machine; 11, main body assembly; 111, machine base; 112, frame; 113, fixed plate; 114, movable plate; 115, lead screw; 116, chute; 117, protective cover; 118, support seat; 119, control panel; 12, execution assembly; 121, seat body; 122, inclined groove; 123, convex block; 124, chuck; 125, card slot; 126, rack bar; 127, chuck head; 128, sector gear; 129, handle; 1210, limit block; 13, drive assembly; 131, execution wheel; 132, mounting bracket; 133, transmission small belt pulley; 134, guide wheel; 135, tension pulley; 136, first belt; 137, transmission large belt pulley; 138, servo motor; 139, driving belt pulley; 1310, second belt; 14, hydraulic cylinder; 15, force value sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5 , the present utility model provides a technical solution for a microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine: a microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine, including a tensile testing machine 1 and used for tensile strength testing, the tensile testing machine 1 includes:

[0027] The main body component 11 includes a frame 112 fixed on both sides of the front end of the base 111, a fixed plate 113 fixed between the front ends of the two frames 112, a movable plate 114 slidably installed between the two frames 112, a lead screw 115 rotatably installed inside the frame 112, and the lead screw 115 is threadedly installed with the movable plate 114;

[0028] The execution component 12 includes a seat body 121 installed on the fixed plate 113 and the movable plate 114, symmetrically arranged inclined slots 122 opened on both sides of the lower end inside the seat body 121, a convex block 123 slidably installed inside the inclined slots 122, a chuck 124 fixed on the top of the convex block 123, a rack bar 126 slidably installed inside the seat body 121, a sector gear 128 rotatably installed at the upper end of the seat body 121, and the sector gear 128 is meshed and driven with the rack bar 126, and a handle 129 fixed on the upper end of the sector gear 128;

[0029] The driving component 13 includes a seat body 121 fixed at the rear end of the lead screw 115.

[0030] In this embodiment, after the end of the specimen is placed between the chucks 124 on both sides inside the seat body 121, by pulling the handle 129 to drive the sector gear 128 to rotate, the sector gear 128 drives the chuck 127 to move through the rack bar 126. At the same time, the chuck 127 clamps the specimen through the convex block 123 cooperating with the inclined slot 122; and, the force during the subsequent stretching process will continuously drive the chucks 124 on both sides to clamp the specimen.

[0031] Specifically, the execution component 12 further includes a card slot 125 opened on the chuck 124, a chuck 127 fixed at the front end of the rack bar 126, and the chuck 127 is located inside the card slot 125, and limit blocks 1210 are installed on both sides of the upper end inside the seat body 121.

[0032] In this embodiment, the chuck 124 can be taken out of the seat body 121 for replacement by disassembling the limit block 1210; and, the rack bar 126 is connected to the chuck 124 by the chuck 127 being snapped into the card slot 125, avoiding affecting the disassembly and assembly of the chuck 124.

[0033] Specifically, the drive assembly 13 also includes a mounting frame 132 fixed inside the machine base 111, a small transmission pulley 133 rotatably mounted in the middle of the rear end of the mounting frame 132, a guide wheel 134 rotatably mounted on the right side of the rear end of the mounting frame 132, a tensioning pulley 135 mounted on the left side of the rear end of the mounting frame 132, a first belt 136 installed between the execution wheels 131 on both sides, the small transmission pulley 133, the guide wheel 134 and the tensioning pulley 135, a large transmission pulley 137 rotatably mounted in the middle of the front end of the mounting frame 132, and the large transmission pulley 137 is fixed to the small transmission pulley 133, a servo motor 138 installed at the rear end of the mounting frame 132, a driving pulley 139 fixed at the output end of the servo motor 138, and a second belt 1310 installed between the driving pulley 139 and the large transmission pulley 137.

[0034] In this embodiment, the output end of the servo motor 138 drives the active pulley 139 to cooperate with the second belt 1310 to drive the large transmission pulley 137 to rotate. The large transmission pulley 137 drives the first belts 136 on both sides to rotate through the small transmission pulley 133, the guide wheel 134 and the tensioning wheel 135. The first belt 136 drives the movable plate 114 to move through the screw 115, so that the distance between the movable plate 114 and the fixed plate 113 can be adjusted according to the specification length of the sample.

[0035] Specifically, the main assembly 11 also includes a slide groove 116 opened on the top of the frame 112, a protective cover 117 slidably installed on the upper ends of the frames 112 on both sides through the slide groove 116, a support base 118 fixed at the front end of the fixed plate 113, and a control panel 119 installed on the outer wall of the base 111.

[0036] In this embodiment, during the test, the protective cover 117 is placed on the sample for protection. When the sample is placed in or taken out, the protective cover 117 can be moved to the rear end.

[0037] Specifically, the tensile testing machine 1 further includes a hydraulic cylinder 14 installed at the front end of the machine base 111 , and a force sensor 15 installed between the output end of the hydraulic cylinder 14 and the movable plate 114 .

[0038] In this embodiment, after the two ends of the sample are respectively fixed by the actuator 12 on the fixed plate 113 and the actuator 12 on the movable plate 114, the movable plate 114 is driven by the output end of the hydraulic cylinder 14 to stretch the sample. At the same time, the actuator 12 drives the screw 115 to control the movable plate 114 to move at a constant speed, so that the tensile force value of the sample is obtained through the force sensor 15.

[0039] Working principle and usage process of the utility model: First, the output end of the servo motor 138 drives the driving pulley 139 to cooperate with the second belt 1310 to drive the large driving pulley 137 to rotate. The large driving pulley 137 drives the first belts 136 on both sides to rotate through the driven pulley 133, the guide pulley 134 and the tension pulley 135. The first belt 136 drives the movable plate 114 to move through the lead screw 115, so that the distance between the movable plate 114 and the fixed plate 113 can be adjusted according to the length of the specimen specification. Then, after both ends of the specimen are fixed by the execution components 12 on the fixed plate 113 and the execution components 12 on the movable plate 114 respectively, the output end of the hydraulic cylinder 14 drives the movable plate 114 to stretch the specimen. At the same time, the lead screw 115 is driven by the execution component 12 to control the equal-speed movement of the movable plate 114, so as to obtain the tensile force value of the specimen through the force value sensor 15.

[0040] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0041] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine, characterized in that: Including a tensile testing machine (1) and used for tensile strength testing, the tensile testing machine (1) includes: A main body assembly (11), including frames (112) fixed on both sides of the front end of a machine base (111), a fixed plate (113) fixed between the front ends of the two frames (112), a movable plate (114) slidably installed between the two side frames (112), a lead screw (115) rotatably installed inside the frame (112), and the lead screw (115) is threadedly installed with the movable plate (114); An execution assembly (12), including a seat body (121) installed on the fixed plate (113) and the movable plate (114), symmetrically arranged inclined grooves (122) opened on both sides at the lower end inside the seat body (121), bumps (123) slidably installed inside the inclined grooves (122), chucks (124) fixed to the tops of the bumps (123), a rack bar (126) slidably installed inside the seat body (121), a sector gear (128) rotatably installed at the upper end of the seat body (121), and the sector gear (128) is in meshing transmission with the rack bar (126), a handle (129) fixed to the upper end of the sector gear (128); A drive assembly (13), including a seat body (121) fixed to the rear end of the lead screw (115).

2. A microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine according to claim 1, characterized in that: The execution assembly (12) further includes a card slot (125) opened on the chuck (124), a chuck head (127) fixed to the front end of the rack bar (126), and the chuck head (127) is located inside the card slot (125), and limit blocks (1210) are installed on both sides at the upper end inside the seat body (12).

3. A microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine according to claim 1, characterized in that: The drive assembly (13) further includes a mounting frame (132) fixed inside the machine base (111), a transmission small pulley (133) rotatably installed in the middle of the rear end of the mounting frame (132), a guide pulley (134) rotatably installed on the right side of the rear end of the mounting frame (132), a tension pulley (135) installed on the left side of the rear end of the mounting frame (132), and a first belt (136) installed between the two execution wheels (131), the transmission small pulley (133), the guide pulley (134) and the tension pulley (135).

4. A microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine according to claim 3, characterized in that: The drive assembly (13) further includes a transmission large pulley (137) rotatably installed in the middle of the front end of the mounting frame (132), and the transmission large pulley (137) is fixed to the transmission small pulley (133), a servo motor (138) installed at the rear end of the mounting frame (1), a driving pulley (139) fixed to the output end of the servo motor (138), and a second belt (1310) installed between the driving pulley (139) and the transmission large pulley (137).

5. A microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine according to claim 1, characterized in that: The main body assembly (11) further includes a chute (116) opened on the top of the frame (112), a protective cover (117) slidably installed on the upper ends of the two side frames (112) through the chute (11), a support seat (118) fixed to the front end of the fixed plate (113), and a control panel (119) installed on the outer wall of the machine base (111).

6. A microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine according to claim 1, characterized in that: The tensile testing machine (1) further includes a hydraulic cylinder (14) installed at the front end of the machine base (111), and a force value sensor (15) installed between the output end of the hydraulic cylinder (14) and the movable plate (114).

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