Fatigue test mechanism for spring leaf

Abstract

The utility model provides a fatigue test mechanism for a spring leaf, which relates to the technical field of spring leaf, and comprises a detection table, a detection mechanism body is arranged above the detection table, a movable adjusting mechanism is arranged in the detection table, and the movable adjusting mechanism comprises a bidirectional screw rod, a worm gear, a threaded block, a movable block, a clamping block, a servo motor and a worm. The detection platform is internally provided with a movement adjusting mechanism, automatic movement adjustment is performed according to the size of the spring piece through the movement adjusting mechanism, the pressing mechanism is arranged in the detection platform, and through cooperative use of the movement adjusting mechanism and the pressing mechanism, automatic distance adjustment is performed according to the size of the spring piece, and preliminary clamping and limiting are performed on the two sides of the spring piece. Then the pressing blocks are driven by the pressing plate to descend and move to press and fix the upper ends of the two sides of the spring leaf, the whole process is convenient to operate, the manual labor force is reduced, the stability of the spring leaf during testing is improved, and the effect of improving the accuracy of a test result is further achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring leaf spring technical field especially, it relates to a kind of fatigue testing mechanism for spring leaf spring. BACKGROUND

[0002] Spring leaf spring is a kind of metal fittings, in computer, motherboard, electronic watch, calculator, car remote key, electronic scale, electric toy, mobile phone and other electronic equipment are applied, the existing spring leaf spring is fatigued, since traditional fixture of fatigue testing device is fixed, need to be screwed the bolt of both ends to drive corresponding movable piece to spring leaf spring is clamped and fixed, corresponding disassembly needs to be loosened, when carrying out multiple and continuous spring leaf spring test, still there is the problem of poor convenience.

[0003] Such as a kind of spring leaf spring fatigue testing device of Chinese patent document (announcement number: CN212963973U), this patent although through L-shaped limit plate located on detection table, spring leaf spring is directly inserted into the inside of L-shaped limit plate, utilizes the cooperation of clamping block and expansion spring to spring leaf spring can be fixed, and spring leaf spring is fixed and is extracted more convenient, increase the practicability of device.

[0004] However, when testing, since clamping block is pressed and positioned to spring leaf spring by the elastic force of expansion spring, since the poor stability of elastic force limit, when testing, spring leaf spring can exist the situation of being extruded to move, lead to monitoring result to produce greater error, and when facing different model sizes of spring leaf spring use, need to manually move and adjust L-shaped limit plate, operation is more cumbersome, reduce the problem of test efficiency. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art, currently clamping block is pressed and positioned to spring leaf spring by the elastic force of expansion spring, since the poor stability of elastic force limit, when testing, spring leaf spring can exist the situation of being extruded to move, lead to monitoring result to produce greater error, and when facing different model sizes of spring leaf spring use, need to manually move and adjust L-shaped limit plate, operation is more cumbersome, reduce the problem of test efficiency.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] A kind of fatigue testing mechanism for spring leaf spring, including detection table, the detection mechanism body is arranged at the top of the detection table, the inside of the detection table is provided with mobile adjustment mechanism, and mobile adjustment mechanism includes bidirectional screw rod, worm gear, threaded block, moving block, clamping block, servo motor and worm, according to the size of spring leaf spring by the mobile adjustment mechanism is automatically moved and adjusted;

[0008] The inside of the detection table is provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder, a connecting block, a driving rod, a lifting block, a pressing plate and a pressing block.

[0009] Preferably, the upper surface of the detection table is provided with symmetrically distributed moving grooves, both ends of the bidirectional screw rod are rotatably connected with the inner walls of both sides of the detection table through bearings, the inner wall of the worm wheel is fixedly connected with the outer part of the bidirectional screw rod, and the servo motor is installed on the inner bottom wall of the detection table.

[0010] Preferably, one end of the worm is fixedly connected with the output shaft of the servo motor through a shaft coupling, the outer surface of the worm is meshed with the tooth surface of the worm wheel, and the two threaded blocks are symmetrically distributed and threadedly connected to the outer part of the bidirectional screw rod.

[0011] Preferably, the lower end of the moving block is fixedly connected with the upper end of the threaded block, the upper end of the moving block penetrates through the moving groove and extends to the upper side of the detection table, the upper end of the moving block is fixedly connected with the lower end of the clamping block, and the upper end of the clamping block is provided with a movable groove.

[0012] Preferably, one end of the movable groove penetrates and extends to the inside of the moving block, both sides of the moving block are provided with symmetrically distributed through grooves, and the outer part of the lifting block is slidably sleeved with the inner wall of the movable groove.

[0013] Preferably, the upper end of the lifting block is fixedly connected with the lower end of the pressing plate, the lower end of the pressing plate is fixedly connected with the upper end of the pressing block, and the inner wall of the lifting block is slidably sleeved with the outer wall of the driving rod.

[0014] Preferably, both ends of the driving rod penetrate through the through grooves and extend to the two side surfaces of the moving block, and one end of each of the two driving rods is fixedly connected with the two side surfaces of the connecting block.

[0015] Preferably, the servo electric cylinder is installed on the inner top wall of the detection table, and one end of the piston rod of the servo electric cylinder is fixedly connected with the upper end of the connecting block.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] In the utility model, the cooperation of the moving adjusting mechanism and the pressing mechanism can realize automatic distance adjustment according to the size of the spring leaf, preliminarily clamp and limit the two sides of the spring leaf, then drive the pressing block to move downwards through the pressing plate to press and fix the upper ends of the two sides of the spring leaf, the whole process is convenient to operate, reduces manual labor, improves the stability of the spring leaf during testing, and further improves the accuracy of the test result. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A main body structure schematic view of a fatigue test mechanism for spring leaflets is provided in the utility model;

[0019] Figure 2 A detection table structure perspective view of the fatigue test mechanism for spring leaflets is provided in the utility model;

[0020] Figure 3 A bidirectional screw rod structure perspective view of the fatigue test mechanism for spring leaflets is provided in the utility model;

[0021] Figure 4 A driving rod structure perspective view of the fatigue test mechanism for spring leaflets is provided in the utility model.

[0022] Legend: 1, detection table; 2, detection mechanism body; 3, bidirectional screw rod; 31, worm gear; 32, threaded block; 33, moving block; 34, clamping block; 35, servo motor; 36, worm; 37, moving groove; 38, movable groove; 39, through groove; 4, servo cylinder; 41, connecting block; 42, driving rod; 43, lifting block; 44, pressing plate; 45, pressing block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described below in conjunction with the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.

[0024] In order to facilitate understanding of the utility model, the utility model will be described more fully below in conjunction with the related, a number of embodiments of the utility model are given, however, the utility model can be realized in many different forms, and is not limited to the embodiments described in the text, on the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or there can be intervening elements, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be intervening elements, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "and / or" includes a set of one or more associated listed items.

[0027] Embodiment

[0028] As Figures 1-4 shown, the utility model provides a technical scheme: a kind of spring elastic sheet fatigue test mechanism, detection table 1 is provided with detection mechanism body 2 above detection table 1, the inside of detection table 1 is provided with movement adjustment mechanism, and movement adjustment mechanism includes bidirectional screw rod 3, worm wheel 31, threaded block 32, moving block 33, clamping block 34, servo motor 35 and worm 36, pass through movement adjustment mechanism and play the automatic movement adjustment according to the size of spring elastic sheet;

[0029] The inside of detection table 1 is provided with pressing mechanism, and pressing mechanism includes servo electric cylinder 4, connecting block 41, driving rod 42, lifting block 43, pressing plate 44 and pressing block 45, and further limiting and fixing to spring elastic sheet is realized to spring elastic sheet by pressing mechanism.

[0030] By the automatic distance adjustment according to the size of spring elastic sheet, the two sides of spring elastic sheet are preliminarily clamped and limited, then the upper end of the two sides of spring elastic sheet is pressed and fixed by pressing block 45 driven by pressing plate 44, so that the stability of spring elastic sheet during testing is improved, and the test result accuracy is improved.

[0031] The upper surface of detection table 1 is provided with moving groove 37 in symmetrical distribution, both ends of bidirectional screw rod 3 are rotatably connected with the inner walls of both sides of detection table 1 through bearings, and the stability during rotation is improved by the cooperation of bearings.

[0032] The inner wall of worm wheel 31 is fixedly sleeved with the outside of bidirectional screw rod 3, and servo motor 35 is installed with the inner bottom wall of detection table 1. As a stable power driving source, servo motor 35 drives worm 36 to rotate stably, and drives bidirectional screw rod 3 to rotate through worm wheel 31 engaged by worm 36.

[0033] One end of worm 36 is fixedly connected with the output shaft of servo motor 35 through a shaft coupling, the outer surface of worm 36 is engaged with the tooth surface of worm wheel 31, two threaded blocks 32 are symmetrically distributed and screw-connected on the outside of bidirectional screw rod 3, the outside of bidirectional screw rod 3 is provided with two groups of symmetrically distributed threads, and when rotating, the threaded blocks 32 are relatively or oppositely moved by the matching thread grooves in the threaded blocks 32.

[0034] The lower end of the moving block 33 is fixedly connected with the upper end of the threaded block 32, the movement of the threaded block 32 drives the synchronous movement of the moving block 33, the upper end of the moving block 33 penetrates through the moving groove 37 and extends to the upper side of the detection table 1, and the moving groove 37 guides and limits the movement stroke of the moving block 33.

[0035] The upper end of the moving block 33 is fixedly connected with the lower end of the clamping block 34, and the opposite movement of the two moving blocks 33 is limited by the clamping block 34, so that the spring leaf is preliminarily positioned.

[0036] The upper end of the clamping block 34 is provided with a movable groove 38, one end of the movable groove 38 penetrates and extends to the inside of the moving block 33, the two sides of the moving block 33 are provided with symmetrical through grooves 39, the outer side of the lifting block 43 is slidably connected with the inner wall of the movable groove 38, and the movable groove 38 guides the lifting movement of the lifting block 43.

[0037] The upper end of the lifting block 43 is fixedly connected with the lower end of the pressing plate 44, the lower end of the pressing plate 44 is fixedly connected with the upper end of the pressing block 45, and the downward movement of the lifting block 43 drives the downward movement of the pressing block 45 through the pressing plate 44, so that the preliminarily limited spring leaf is pressed and fixed, and the detection stability is further improved.

[0038] The inner wall of the lifting block 43 is slidably connected with the outer wall of the driving rod 42, the driving rod 42 guides the transverse movement of the lifting block 43, and drives the lifting block 43 to move up and down when the driving rod 42 moves up and down.

[0039] The two ends of the driving rod 42 penetrate through the through groove 39 and extend to the two side surfaces of the moving block 33, and the through groove 39 guides and limits the stroke of the driving rod 42.

[0040] One end of each of the two driving rods 42 is fixedly connected with the two side surfaces of the connecting block 41, the servo electric cylinder 4 is installed on the inner top wall of the detection table 1, one end of the piston rod of the servo electric cylinder 4 is fixedly connected with the upper end of the connecting block 41, and the extension and contraction of the piston rod of the servo electric cylinder 4 drives the driving rod 42 to move up and down through the connecting block 41.

[0041] The working process of the utility model:

[0042] Step 1: Place the spring spring to be tested on the testing platform 1, start the servo motor 35 to drive the worm 36 to rotate, the rotation of the worm 36 drives the bidirectional screw 3 to rotate through the meshing worm wheel 31, and the rotation of the bidirectional screw 3 drives the two moving blocks 33 to move relative to each other through the threaded block 32. When the moving block 33 moves, the driving rod 42 slides on the inner wall of the lifting block 43, thereby driving the two clamping blocks 34 to move relative to each other through the moving block 33 to perform preliminary clamping and limiting on both sides of the spring spring;

[0043] Step 2: Start the piston rod of the servo electric cylinder 4 to extend, thereby driving the two driving rods 42 to move downward synchronously through the connecting block 41. The movement of the driving rod 42 drives the two lifting blocks 43 to move downward synchronously through the cooperation of the through slot 39. The downward movement of the lifting block 43 is guided by the cooperation of the movable slot 38, and drives the pressing block 45 to move downward through the pressing plate 44, so that the lower end of the pressing block 45 contacts and clamps the upper end of the spring leaf. At this time, the spring leaf can be fatigue tested through the detection mechanism body 2.

[0044] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fatigue testing mechanism for spring leaf, comprising a detection table (1), characterized in that: The detection mechanism body (2) is arranged above the detection table (1), the detection table (1) is internally provided with a movement adjusting mechanism, and the movement adjusting mechanism comprises a bidirectional screw rod (3), a worm wheel (31), a threaded block (32), a moving block (33), a clamping block (34), a servo motor (35) and a worm (36), and the movement adjusting mechanism is used for automatically adjusting the movement according to the size of the spring leaf; The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

2. The fatigue testing mechanism for spring leaf according to claim 1, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

3. The fatigue testing mechanism for spring leaf according to claim 1, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

4. The fatigue testing mechanism for spring leaf according to claim 1, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

5. The fatigue testing mechanism for spring leaf according to claim 4, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

6. The fatigue testing mechanism for spring leaf according to claim 1, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

7. The fatigue testing mechanism for spring leaf according to claim 1, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

8. The fatigue testing mechanism for spring leaf according to claim 1, characterized in that: The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf. The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf. The detection table (1) is internally provided with a pressing mechanism, and the pressing mechanism comprises a servo electric cylinder (4), a connecting block (41), a driving rod (42), a lifting block (43), a pressing plate (44) and a pressing block (45), and the pressing mechanism is used for further limiting and fixing the spring leaf.

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