Adjustable anti-pinch tensile sample alarm clamping instrument

Abstract

The utility model discloses an adjustable anti-pinch tensile sample alarm clamping instrument. The adjustable anti-pinch tensile sample alarm clamping instrument comprises but not limited to a first clamping unit, a second clamping unit and an adjusting part, the first clamping unit and the second clamping unit are connected into a whole through an adjusting part, the first clamping unit and the second clamping unit are each provided with a clamping part and a handle part, each clamping part comprises a movable end and a fixed end, and each handle part is connected with the corresponding movable end through an elastic element. The handle part can drive the limit distance of the movable end relative to the fixed end to change, and a detector and an alarm are arranged on the first clamping unit and / or the second clamping unit; according to the scheme, vertical clamping of the sample can be well achieved, it is guaranteed that the axis of the sample coincides with test force, the test requirement is met, potential safety hazards in the sample clamping process are effectively eliminated, and the clamping device is particularly suitable for clamping a Carcarlin sample and a Z-direction tensile sample and has the advantages of being simple in structure, convenient to operate, safe, reliable and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal material tensile test technical field, especially tensile test sample alarm clamping instrument of adjustable anti -pincers. BACKGROUND

[0002] Tensile test is the most common method in material mechanics performance test, is under certain temperature and static load to the sample along the axial tension, to understand the stress, strain condition of material in elastic deformation and plastic deformation, and the fracture strength of material under maximum stress. Through tensile test can obtain the most basic mechanical property index of material, tensile test has simple, reliable and sample easy to prepare etc. Advantage, and tensile test can most clearly, intuitively reflect the performance characteristics of material. In engineering design, material acceptance, material research, tensile test is an important testing means.

[0003] In tensile test, the shape of the sample clamping end should be suitable for the chuck of the testing machine, and the axial line of the sample should coincide with the force action line. When using wedge-shaped chuck, flat push chuck, sleeve ring clamp and other suitable clamps to clamp the sample, the sample should be clamped in the process to ensure that the clamped sample is subjected to axial tension (along the axial direction to obtain a simple stress state) and to minimize bending. This is particularly important when testing brittle materials or determining the specified plastic elongation strength, the specified total elongation strength, the specified residual elongation strength or the yield strength.

[0004] However, in the process of testing using flat push chuck (parallel clamping block) in the existing equipment, it is often difficult to ensure that the sample is perpendicular, that is, the axial line of the sample is often not parallel to the force axis, which affects the accuracy of the test. In addition, short-scale samples (especially Karralin samples and plate thickness direction samples) are prone to clamping hands during clamping due to their short length, posing a significant safety hazard.

[0005] In order to conveniently, quickly, accurately and safely clamp the sample, ensure that the axial line of the sample is parallel to the test force, and ensure test safety, it is more urgent to find a simple structure, convenient to use, safe and reliable auxiliary tool for clamping tensile test samples. UTILITY MODEL CONTENTS

[0006] The utility model aims at the above -mentioned insufficient provides a kind of adjustable anti -pincers tensile test sample alarm clamping instrument, solves the problem that sample axial line and test force are not parallel during clamping in tensile test, and clamping short-size sample is not safe.

[0007] The utility model is realized by the following schemes:

[0008] The application discloses an adjustable anti-pinch hand clamping device for a tensile specimen, which comprises a first clamping unit, a second clamping unit and an adjusting part.

[0009] According to the structure of the adjustable anti-pinch hand clamping device for a tensile specimen, the adjusting part comprises a first adjusting plate and a second adjusting plate; the first adjusting plate is arranged on the first clamping unit, and the second adjusting plate is arranged on the second clamping unit; the first adjusting plate and the second adjusting plate are arranged in parallel, and a plurality of connecting holes are arranged on the first adjusting plate and the second adjusting plate; and the first adjusting plate and the second adjusting plate are connected by at least two bolts.

[0010] According to the structure of the adjustable anti-pinch hand clamping device for a tensile specimen, the clamping part specifically comprises an inner connecting rod, an outer connecting rod and a connecting assembly; the inner connecting rod and the outer connecting rod are arranged in parallel; the connecting assembly is arranged on the inner connecting rod and close to the side wall of the outer connecting rod; the connecting assembly is provided with a through hole for the outer connecting rod to penetrate; and the outer connecting rod is arranged in the connecting assembly in a penetrating mode.

[0011] According to the structure of the adjustable anti-pinch hand clamping device for a tensile specimen, a limiting plate is arranged on the outer connecting rod close to the handle part; the elastic element is arranged between the limiting plate and the connecting assembly; and the elastic assembly is fixedly connected with the limiting plate and the connecting assembly respectively; or the elastic element is movably arranged on the outer connecting rod.

[0012] According to the structure of the adjustable anti-pinch hand clamping device for a tensile specimen, an inner chuck is arranged on the end of the inner connecting rod away from the handle part; and an outer chuck is arranged on the end of the outer connecting rod away from the handle part; and the inner chuck and the outer chuck protrude from the plane where the inner connecting rod and the outer connecting rod are located.

[0013] According to the structure of the adjustable anti-pinch hand clamping device for a tensile specimen, the contact surfaces of the inner chuck and the outer chuck with the tensile specimen are made of a flexible material; and the inner chuck is made of a magnetic material.

[0014] According to the structure of the adjustable anti-pinch hand clamping device for a tensile specimen, the first adjusting plate and the second adjusting plate are respectively arranged perpendicularly to the inner connecting rod connected thereto.

[0015] Based on the structure of the adjustable anti-pinch hand stretching sample alarm clamping instrument, the detector is a horizontal detector, the alarm is an audible and visual alarm display device, the detection end of the horizontal detector is arranged opposite to the clamping part, and the first clamping unit and / or the second clamping unit is further provided with a battery assembly.

[0016] Based on the structure of the adjustable anti-pinch hand stretching sample alarm clamping instrument, the handle part comprises a connecting straight rod, a connecting inclined rod and a holding plate, the connecting straight rod is connected with the connecting inclined rod and the limiting plate respectively, the holding plate is connected with the end of the connecting inclined rod away from the connecting straight rod, and the connecting straight rod is coaxially arranged with the outer connecting rod.

[0017] Based on the structure of the adjustable anti-pinch hand stretching sample alarm clamping instrument, the angle between the connecting straight rod and the connecting inclined rod is obtuse.

[0018] In summary, due to the adoption of the above technical scheme, the beneficial effects of the utility model are:

[0019] 1. The relative distance between the first clamping unit and the second clamping unit can be changed through the adjusting part, so that the clamping instrument can adapt to stretching samples of different lengths, the application range of the clamping instrument is wider, the movable end of the clamping part is away from the fixed end by pushing the handle part, the stretching sample can be clamped therein, then the handle part is released, the movable end automatically clamps the stretching sample under the driving of the elastic element, one-handed clamping operation can be completed, meanwhile, the detector and the alarm are arranged on the clamping instrument, the clamping precision of the stretching sample can be quickly detected and alarmed, the parallelism between the axis of the stretching sample and the test force during clamping is detected, and the device is also convenient for adjusting the stretching sample.

[0020] 2. The device can well realize vertical clamping of the sample, ensure that the axis of the sample coincides with the test force, meet the test requirements, effectively eliminate the safety hazards during clamping of the sample, is especially suitable for clamping of Karralin samples and Z-direction stretching samples, and has the advantages of simple structure, convenient operation, safety and reliability and the like. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is a structure schematic view of the whole utility model;

[0022] Fig. 2 It is a structure schematic view of the utility model when clamping the stretching sample;

[0023] Fig. 3 It is a structure schematic view of the inner chuck and the outer chuck in the utility model;

[0024] BRIEF DESCRIPTION OF DRAWINGS: 1, first clamping unit; 2, second clamping unit; 3, adjusting part; 4, detector; 5, alarm; 6, battery assembly; 7, tensile specimen; 8, elastic element; 11, clamping part; 12, handle part; 31, first adjusting plate; 32, second adjusting plate; 33, bolt; 111, inner connecting rod; 112, outer connecting rod; 113, connecting assembly; 114, limiting plate; 115, inner chuck; 116, outer chuck; 121, connecting straight rod; 122, connecting inclined rod; 123, holding plate. DETAILED DESCRIPTION

[0025] All features disclosed in this specification, and / or all steps of any methods or processes disclosed in this specification, can be combined in any combination, except combinations where at least some of the features and / or steps are mutually exclusive.

[0026] Any of the features described herein (including any accompanying claims, abstract), unless expressly stated otherwise, are intended alternatives, equivalents or similar features to be substituted for one another. That is, unless expressly stated, each feature is merely an example of one of a range of alternatives, equivalents or similar features.

[0027] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0028] In addition, the terms "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features.

[0029] Embodiment 1

[0030] As Figs. 1-3 shown, the present application provides a technical scheme:

[0031] An adjustable anti-pinch hand tensile specimen 7 alarm clamping instrument, which at least includes but is not limited to a first clamping unit 1, a second clamping unit 2 and an adjusting part 3; the first clamping unit 1 and the second clamping unit 2 are connected as a whole through the adjusting part 3, the clamping part 11 and the handle part 12 are arranged on the first clamping unit 1 and the second clamping unit 2, the clamping part 11 includes a movable end and a fixed end, the handle part 12 is connected with the movable end through the elastic element 8, the handle part 12 can change the distance between the movable end and the fixed end, the detector 4 and the alarm 5 are arranged on the first clamping unit 1 and / or the second clamping unit 2.

[0032] Based on the above structure, the relative distance between the first clamping unit 1 and the second clamping unit 2 can be changed by adjusting the adjusting part 3, so that the clamping instrument can be adapted to different lengths of the tensile sample 7, the application range of the clamping instrument is wider, by pushing the handle part 12, the movable end of the clamping part 11 is away from the fixed end, the tensile sample 7 can be clamped into it, then the handle part 12 is released, under the driving of the elastic element 8, the movable end automatically clamps the tensile sample 7, only one person can complete the clamping operation with one hand, at the same time, the detector 4 and the alarm 5 are arranged on the clamping instrument, which can quickly and directly detect and alarm the clamping precision of the tensile sample 7, the parallelism of the tensile sample 7 axis and the test force during clamping is detected, the device is also convenient for adjusting the tensile sample 7.

[0033] As an example, the adjusting part 3 can include a first adjusting plate 31 and a second adjusting plate 32; the first adjusting plate 31 is arranged on the first clamping unit 1, and the second adjusting plate 32 is arranged on the second clamping unit 2; the first adjusting plate 31 and the second adjusting plate 32 are arranged in parallel, and a plurality of connecting holes are arranged on the first adjusting plate 31 and the second adjusting plate 32, and the first adjusting plate 31 and the second adjusting plate 32 are connected by at least two bolts 33.

[0034] Based on the above structure, the first clamping unit 1 and the second clamping unit 2 can be adjusted more smoothly by arranging the first adjusting plate 31 and the second adjusting plate 32 in parallel, a plurality of connecting holes are arranged on the first adjusting plate 31 and the second adjusting plate 32, which can be adjusted according to the required clamping tensile sample 7, and the first clamping unit 1 and the second clamping unit 2 can be accurately positioned by locking the first adjusting plate 31 and the second adjusting plate 32 by at least two bolts 33.

[0035] As an example, the clamping part 11 can specifically include an inner connecting rod 111, an outer connecting rod 112 and a connecting assembly 113, the inner connecting rod 111 and the outer connecting rod 112 are arranged in parallel, the connecting assembly 113 is arranged on the inner connecting rod near the side wall of the outer connecting rod 112, the connecting assembly 113 is provided with a through hole for the outer connecting rod 112 to penetrate, and the outer connecting rod 112 is arranged in the connecting assembly 113 in a penetrating manner;

[0036] A limiting plate 114 is arranged on the outer connecting rod 112 near the handle part 12, the elastic element 8 is arranged between the limiting plate 114 and the connecting assembly 113, and the elastic element 8 can be fixedly connected with the limiting plate 114 and the connecting assembly 113 respectively; or the elastic element 8 is movably arranged on the outer connecting rod 112.

[0037] An inner collet 115 is arranged on the end of the inner connecting rod 111 away from the handle part 12, and an outer collet 116 is arranged on the end of the outer connecting rod 112 away from the handle part 12; both the inner collet 115 and the outer collet 116 protrude from the plane in which the inner connecting rod 111 and the outer connecting rod 112 are located.

[0038] Based on the above structure, by arranging the elastic element 8, the inner collet 115 and the outer collet 116 can always maintain a pre-tightening force, that is, without pushing the handle part 12, the inner collet 115 and the outer collet 116 are always in contact under the action of the elasticity of the elastic element 8; when it is necessary to clamp the tensile specimen 7, one hand clamps the adjusting part 3, and at the same time, the handle part 12 is pushed, so that the distance between the inner collet 115 and the outer collet 116 changes, and finally the tensile specimen 7 is put in, and then the handle part 12 is released, and under the action of the elasticity, the inner collet 115 and the outer collet 116 automatically clamp the tensile specimen 7.

[0039] As an example, the contact surfaces of the inner collet 115 and the outer collet 116 with the tensile specimen 7 can be made of flexible material, and the inner collet 115 is made of magnetic material. The use of flexible material can increase the friction with the tensile specimen 7, making the clamping process more stable, and the inner collet 115 is made of magnetic material, which can facilitate the clamping of the specimen.

[0040] As an example, the first adjusting plate 31 and the second adjusting plate 32 are respectively arranged perpendicular to the inner connecting rod 111 connected thereto.

[0041] Based on the above structure, the adjusting part 3 formed by the first adjusting plate 31 and the second adjusting plate 32 forms a beam structure, which is convenient for one-handed operation, that is, one hand clamps part of the fingers on the beam structure, and the remaining fingers can pull the handle part 12 to complete the one-handed pushing operation.

[0042] As an example, the detector 4 can be a horizontal detector 4, and the alarm 5 can be an audible and visual alarm display device; the detection end of the horizontal detector 4 is arranged opposite the clamping part 11, and a battery assembly 6 is further arranged on the first clamping unit 1 and / or the second clamping unit 2;

[0043] Based on the above structure, the horizontal detector 4 detects the horizontal clamping of the tensile specimen 7, so that the axis of the clamped tensile specimen 7 is parallel to the test force, and the audible and visual alarm display device alarms when it is not parallel, and the battery assembly 6 supplies power to the whole.

[0044] As an example, the handle part 12 can include a connecting straight rod 121, a connecting inclined rod 122, and a holding plate 123; the connecting straight rod 121 is connected with the connecting inclined rod 122 and the limiting plate 114 respectively, and the holding plate 123 is connected with the end of the connecting inclined rod 122 away from the connecting straight rod 121. The connecting straight rod 121 can be coaxially arranged with the outer connecting rod 112.

[0045] The angle between the connecting straight rod 121 and the connecting inclined rod 122 is obtuse.

[0046] Based on the above structure, the handle part 12 is specially arranged, so that one-handed operation is facilitated and the operation difficulty is reduced.

[0047] Embodiment 2

[0048] The adjustable anti-pinch hand alarm clamping instrument for stretching sample 7 comprises a handle, a spring, a connecting assembly 113, an inner clamp 115 connecting rod, an outer clamp 116 connecting rod, the inner clamp 115, the outer clamp 116, connecting screws, a battery assembly 6, a horizontal detector 4 and an audible and light alarm display device. The handle, the spring and the inner and outer clamp 116 connecting rods are symmetrically arranged. Rectangular inner and outer clamps 116 are arranged at the ends of the inner and outer clamp 116 connecting rods, and the inner and outer clamps 116 are parallel to each other, so that the axis of the sample is perpendicular to the inner and outer clamp 116 connecting rods when the sample is clamped. The inner clamp 115 is made of magnetic material, so that the sample can be conveniently clamped. The inner and outer clamp 116 connecting rods are connected through the connecting assembly 113, and the axes of the two are kept parallel. The spring is arranged between the inner and outer clamp 116 connecting rods and the handle. When the handle is pressed, the spring is compressed, so that the parallel distance between the inner and outer clamp 116 is increased, thereby facilitating the clamping of the sample. When the handle is released, the spring is stretched, and the distance between the inner and outer clamp 116 is reduced, thereby clamping the sample. The battery assembly 6, the horizontal detector 4 and the audible and light alarm display device are further arranged on the inner clamp 115 connecting rod. When the sample is clamped and kept perpendicular to the horizontal, the audible and light alarm display device displays a green light, otherwise, a red light is displayed and an alarm sound is emitted, so that the perpendicularity of the sample can be ensured. A threaded through hole is formed in one end of the inner clamp 115 connecting rod. Two groups of symmetrical inner clamp 115 connecting rods are connected through two groups of connecting screws, and the span of the two groups of connecting screws can be adjusted according to the size of the sample.

[0049] When the sample is processed, it is marked and the size is measured. Then, the position of the connecting screw is adjusted according to the length of the sample, so that the reasonable span of the inner clamp 115 connecting rod is kept. Then, the handle is pressed, the sample is placed between the inner clamp 115 and the outer clamp 116, and then the handle is released, at this time the sample is placed properly. Then, the position is continuously adjusted until the audible and light alarm display device displays a green light and no longer alarms, at this time the axis of the sample is perpendicular to the horizontal. The upper and lower clamp buttons of the stretching testing machine are pressed, and the sample is clamped. Finally, the handle is pressed again, the clamping instrument is released from the sample, and the test can be carried out.

[0050] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable anti-pinch tensile specimen alarm clamping device, characterized in that, Including but not limited to a first clamping unit, a second clamping unit, and an adjustment part; the first clamping unit and the second clamping unit are connected as one unit through the adjustment part, and each of the first clamping unit and the second clamping unit is provided with a clamping part and a handle part. The clamping part includes a movable end and a fixed end. The handle part is connected to the movable end through an elastic element. The handle part can drive the movable end to change the limit distance relative to the fixed end. The first clamping unit and / or the second clamping unit are provided with a detector and an alarm.

2. The adjustable anti-pinch tensile specimen alarm clamping device as described in claim 1, characterized in that: The adjustment unit includes a first adjustment plate and a second adjustment plate; the first adjustment plate is disposed on a first clamping unit, and the second adjustment plate is disposed on a second clamping unit; the first adjustment plate and the second adjustment plate are arranged in parallel, and each of the first adjustment plate and the second adjustment plate is provided with multiple connecting holes, and the first adjustment plate and the second adjustment plate are connected by at least two bolts.

3. The adjustable anti-pinch tensile specimen alarm clamping device as described in claim 2, characterized in that: The clamping part specifically includes an inner connecting rod, an outer connecting rod, and a connecting assembly. The inner connecting rod and the outer connecting rod are arranged in parallel. The connecting assembly is disposed on the side wall of the inner connecting rod near the outer connecting rod. The connecting assembly is provided with a through hole for the outer connecting rod to pass through, and the outer connecting rod is disposed through the connecting assembly.

4. The adjustable anti-pinch tensile specimen alarm clamping device as described in claim 3, characterized in that: A limiting plate is provided on the outer connecting rod near the handle. The elastic element is located between the limiting plate and the connecting assembly. The elastic element is fixedly connected to the limiting plate and the connecting assembly respectively; or the elastic element is movably sleeved on the outer connecting rod.

5. The adjustable anti-pinch tensile specimen alarm clamping device as described in claim 4, characterized in that: An inner clamp is provided on the end of the inner connecting rod away from the handle, and an outer clamp is provided on the end of the outer connecting rod away from the handle; both the inner clamp and the outer clamp protrude from the plane where the inner and outer connecting rods are located.

6. The adjustable anti-pinch tensile specimen alarm clamping device as described in claim 5, characterized in that: The contact surfaces of the inner and outer clamps with the tensile specimen are made of flexible material, and the inner clamp is made of magnetic material.

7. An adjustable anti-pinch tensile specimen alarm clamping device as described in claim 6, characterized in that: The first adjusting plate and the second adjusting plate are respectively arranged perpendicular to the inner connecting rod to which they are connected.

8. An adjustable anti-pinch tensile specimen alarm clamping device as described in claim 7, characterized in that: The detector is a horizontal detector, and the alarm is an audible and visual alarm display device; the detection end of the horizontal detector is positioned directly opposite the clamping part, and the first clamping unit and / or the second clamping unit are also provided with a battery assembly.

9. An adjustable anti-pinch tensile specimen alarm clamping device as described in claim 8, characterized in that: The handle includes a connecting straight rod, a connecting diagonal rod, and a grip plate; the connecting straight rod is connected to the connecting diagonal rod and the limiting plate respectively, and the grip plate is connected to the end of the connecting diagonal rod away from the connecting straight rod; the connecting straight rod is coaxially arranged with the outer connecting rod.

10. An adjustable anti-pinch tensile specimen alarm clamping device as described in claim 9, characterized in that: The angle between the connecting straight rod and the connecting diagonal rod is an obtuse angle.

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