Digital display type manual biaxial stretching device

Abstract

The utility model discloses a digital display type manual biaxial stretching device. The digital display type manual biaxial stretching device comprises a rectangular frame and two stretching parts, the stretching part comprises two rail shafts arranged in the rectangular frame, two clamping parts arranged between the two rail shafts and a driving part arranged on the rectangular frame; an enclosed area formed by the four track shafts is not shielded; one side of the rectangular frame is detachably connected with a generator; and the generator applies external stimulation to the enclosed area. The track shaft provides stable guiding for the clamping part to guarantee large enough drawing force, meanwhile, a non-shielding area is reserved, and external stimulation can be applied to the non-shielding area. The optimized structure is light and easy to install, and can be placed at any time or installed and fixed through a footstand; the clamped material is monitored in real time through the digital display panel; the clamping angle of the mounting plate and the clamping plate can be adjusted, and larger and more stable clamping force is provided for clamped materials.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical property testing, and particularly relates to a digital display manual biaxial tension device. Background Technique

[0002] The biaxial tension experiment is a common experimental method in material mechanics, used to study the behavior of materials under tensile stresses simultaneously in two mutually perpendicular directions. Through the biaxial tension experiment, mechanical property parameters of materials under complex stress states can be obtained, such as stress-strain curves, yield strength, tensile strength, elongation rate, etc. These parameters can be used to evaluate the performance of materials and predict their potential applications.

[0003] The Chinese patent document with the publication number CN102320127B discloses a biaxial synchronous tension device, including a fixed frame, a tension frame and a tension assembly. The longitudinal clamp I is fixedly arranged on the tension frame. The transverse clamp I, the transverse clamp II and the longitudinal clamp II are all driven by the tension frame to realize the tension movement. By adopting a fixed support, a tension support combined with a steering wheel structure, a tension driving device is used to drive the tension frame to realize the simultaneous tension movement of four clamps in two axes, that is, through uniaxial tension, the effect of biaxial synchronous tension is achieved to obtain relatively accurate tension data and results. And the equipment has a simple structure and can realize biaxial tension on a uniaxial tension test machine, avoiding the problems of complex mechanisms and high costs in bidirectional synchronous tension in the prior art.

[0004] For existing biaxial tension testing machines, such as the technical solutions introduced in the above patents, many mechanical properties of materials are obtained by measuring the force and displacement obtained from the tensioned materials. However, in order to be applicable to more stretchable materials with different sizes and strengths, biaxial tension testing machines often need to add a backboard or guide rail on one side of the structure to generate higher tensile forces, which results in one side of the material being connected to the outside and the other side being closed. When researchers want to explore the influence of external stimuli on materials at different tensile rates, the unidirectionally closed structure will become an obstacle. Content of the Utility Model

[0005] In order to overcome the problem in the prior art that in order to increase the tensile force of biaxial tension, a backboard or guide rail is often added to the main structure, but it will also block the clamped material and the test on the influence of external stimuli on the tensile rate of the clamped material cannot be carried out; an object of the utility model is to provide a digital display manual biaxial tension device. By arranging two groups of mutually perpendicular track shafts in a rectangular frame and setting the clamping part of the clamped material between the two track shafts, the enclosed area formed by the four track shafts has no obstruction. A generator arranged on one side of the rectangular frame can apply external stimuli to the clamped material to explore the influence of external stimuli on the clamped material at different tensile rates.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a digital manual biaxial stretching device, comprising a rectangular frame and two stretching parts arranged in the rectangular frame; the stretching part comprises two mutually parallel track shafts arranged in the rectangular frame, two clamping parts respectively arranged between the two track shafts, and a driving part arranged on the rectangular frame for driving at least one of the clamping parts to slide; the track shafts in the two stretching parts are respectively arranged longitudinally and horizontally; wherein, the enclosed area formed by the four track shafts is unobstructed; a generator facing the enclosed area is detachably connected to one side of the rectangular frame; the generator is used to apply external stimulation to the clamped material in the enclosed area; the external stimulation is light, terahertz wave or magnetic field.

[0007] The track shaft provides a stable guiding mechanism for the sliding of the clamping part, providing a stable and sufficiently large tensile force for the clamped material; the generator arranged on one side can also stably apply external stimulation to the stretched material, which is convenient for the implementation of relevant tests and also helps to ensure the accuracy of the tests.

[0008] Furthermore, the two track axes in the stretching part are respectively an optical axis arranged in the rectangular frame and a rotating shaft rotatably connected in the rectangular frame; the driving part includes a screw rod arranged on the corresponding clamping part and a screw rod nut gear rotatably connected to the rectangular frame; the screw rod nut gear is threadedly connected to the screw rod; the screw rod nut gear is transmission connected to the rotating shaft.

[0009] The rotating shaft not only provides a guide for the sliding of the clamping part, but also plays a role in transmitting the screw nut gear; the structure is further simplified, the complexity of the structure is reduced, and obstruction of the clamped material is avoided.

[0010] Furthermore, the clamping part includes a mounting plate slidably connected to the corresponding track axis and a clamping plate detachably connected to the mounting plate; two fixing screw holes are arranged on the side of the mounting plate close to the clamped material; the fixing screws installed in the fixing screw holes pass through the clamping plate; two top screw holes are arranged on the side of the clamping plate away from the clamped material; the top screws installed in the top screw holes are abutted against the mounting plate to adjust the angle between the clamping plate and the mounting plate.

[0011] The setting of the top screw creates an angle between the clamping plate and the mounting plate, and the clamping end of the clamping plate is inclined toward the clamping end of the mounting plate, which can provide a larger and more stable clamping force and prevent the clamped material from detaching from the clamping part due to stretching and thinning.

[0012] Further, the two stretching parts are respectively a horizontally arranged transverse stretching part and a vertically arranged longitudinal stretching part; the transverse stretching part includes two symmetrically arranged clamping parts that are horizontally slidably connected to the corresponding track shafts; the longitudinal stretching part includes a clamping part that is longitudinally slidably connected to the corresponding track shaft, and the other clamping part is arranged at the inner bottom end of the rectangular frame.

[0013] Further, a plurality of L-shaped feet are arranged at the bottom end of the rectangular frame; waist-shaped holes are respectively arranged on two perpendicular sides of the feet; the length directions of the two waist-shaped holes are perpendicular to each other; the waist-shaped holes for installing the rectangular frame are horizontally arranged.

[0014] In order to ensure the stability of the rectangular frame, the rectangular frame can be stably installed on the base to prevent fluctuations in the externally applied stimuli and the performance testing of the clamped material.

[0015] Specifically, two inclined surfaces are symmetrically arranged on one side of the mounting plate and the clamping plate facing the clamped material; the inclined surfaces are respectively located on one side close to the adjacent clamping parts.

[0016] The inclined surfaces reduce the interference between the adjacent clamping parts and can clamp smaller clamped materials.

[0017] Specifically, a small gear is coaxially arranged on the rotating shaft; the number of teeth of the lead screw nut gear is greater than that of the small gear; at least one end of the rotating shaft is coaxially provided with a handwheel.

[0018] The small gear and the large gear play the role of a gearbox, and under the premise of providing the same tensile force, the operation of the handwheel is more labor-saving.

[0019] Specifically, among the two clamping parts of the transverse stretching part, a transverse reading head is arranged on one clamping part, and a second magnetic grating scale is arranged on the other clamping part opposite to the transverse reading head; a longitudinal reading head is arranged on the clamping part that is slidably connected to the track shaft in the longitudinal stretching part; a first magnetic grating scale is arranged on the rectangular frame opposite to the longitudinal reading head.

[0020] Specifically, a digital display panel is arranged at the upper end of the rectangular frame; the digital display panel is electrically connected to the transverse reading head and the longitudinal reading head.

[0021] The digital display panel monitors in real time the tensile force of the clamped material in each direction and the tensile force after applying external stimuli.

[0022] Specifically, two sliding rails are provided at the inner bottom end of the rectangular frame; a first slider is provided at the lower end of the clamping part where the transverse reading head is installed; two second sliders are provided at the lower end of the clamping part where the second magnetic grating ruler is installed; the first slider and the second sliders are respectively slidably connected to the corresponding sliding rails.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. While the track shaft provides stable guidance for the clamping part to ensure a sufficiently large tensile force, an unobstructed area is left. At the same time, the generator provided can apply an external stimulus to the clamped material in the unobstructed area, which can be used to analyze the response of the clamped material to external stimuli at different tensile rates, expanding the application range;

[0025] 2. While the rotating shaft provides guidance for the clamping part, it can also transmit power to the lead screw, optimizing the structure, being light and easy to install, and can be placed and used as needed during use, and can be installed and fixed through the footrest;

[0026] 3. At the same time, a magnetic grating ruler and a reading head are provided on the clamping part, and the stretching situation of the clamped material can be monitored in real time through the digital display panel, facilitating the development of the experiment;

[0027] 4. Thumb screws are provided on the clamping part at the same time, which can adjust the clamping angle of the mounting plate and the clamping plate, providing a larger and more stable clamping force for the clamped material to prevent it from detaching during the stretching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the present utility model;

[0029] Figure 2 is a front structural schematic diagram of the longitudinal stretching part of the present utility model;

[0030] Figure 3 is a back structural schematic diagram of the longitudinal stretching part of the present utility model;

[0031] Figure 4 is a back structural schematic diagram of the transverse stretching part of the present utility model;

[0032] Figure 5 is an exploded structural schematic diagram of the transverse stretching part of the present utility model;

[0033] Figure 6 is a structural schematic diagram of the clamping part of the present utility model.

[0034] In the figure: 1. rectangular frame; 11. footrest; 111. kidney-shaped hole; 12. slider; 13. slide rail; 2. stretching part; 21. optical axis; 22. rotating shaft; 221. pinion; 222. handwheel; 3. clamping part; 31. mounting plate; 311. fixing screw hole; 32. clamping plate; 321. setscrew hole; 33. inclined plane; 4. material to be clamped; 5. digital display panel; 51. longitudinal reading head; 52. first magnetic scale pasting plate; 53. transverse reading head; 54. second magnetic scale pasting plate; 6. driving part; 61. lead screw; 62. lead screw nut gear. Detailed implementation mode

[0035] Next, in combination with the accompanying drawings and the detailed implementation mode, the present utility model will be further described. It should be noted that on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0036] In the description of the present utility model, it should be noted that for orientation terms, if there are terms such as "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationships shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0037] In addition, if there are terms such as "first" and "second", they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present utility model, unless otherwise clearly specified and defined, terms such as "set", "install", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or connected through an intermediate medium, and can be internally connected and communicated between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] See Figures 1-6, a digital display type manual biaxial stretching device, comprising a rectangular frame 1 and two stretching parts 2 arranged in the rectangular frame; the stretching part 2 includes two mutually parallel track shafts arranged in the rectangular frame 1, two clamping parts 3 respectively arranged between the two track shafts, and a driving part 6 arranged on the rectangular frame 1 for driving at least one of the clamping parts 3 to slide.

[0040] The track shafts in the two stretching parts are respectively arranged longitudinally and horizontally; the enclosed area formed by the four track shafts is unobstructed; one side of the rectangular frame 1 is detachably connected with a generator facing the enclosed area; the generator is used to apply an external stimulus to the material 4 to be clamped in the enclosed area; the external stimulus is light, terahertz wave or magnetic field, etc.

[0041] The two stretching parts are respectively a horizontally arranged transverse stretching part and a longitudinally arranged longitudinal stretching part; the transverse stretching part includes two symmetrically arranged clamping parts 3 horizontally slidably connected to the corresponding track shafts; the longitudinal stretching part includes a clamping part 3 longitudinally slidably connected to the corresponding track shaft, and the other clamping part 3 is arranged at the inner bottom end of the rectangular frame 1.

[0042] The two track shafts in the stretching part are respectively an optical axis 21 arranged in the rectangular frame 1 and a rotating shaft 22 rotatably connected in the rectangular frame 1; the driving part 6 includes a lead screw 61 arranged on the corresponding clamping part 3 and a lead screw nut gear 62 rotatably connected to the rectangular frame; the lead screw nut gear 62 is threadedly connected with the lead screw 61; a pinion 221 is coaxially arranged on the rotating shaft 22 and is in transmission connection with the lead screw nut gear 62; at least one end of the rotating shaft 22 is coaxially provided with a hand wheel 222.

[0043] Two driving parts 6 are arranged in the transverse stretching part, and the pinion 221 and the hand wheel 222 in transmission connection with the corresponding lead screw nut gear 62 are respectively arranged at both ends of the corresponding rotating shaft 22.

[0044] Optionally, the pinion 221 and the hand wheel 222 can also be separately rotatably connected to the frame 1 and are not arranged on the rotating shaft 22, and the rotating shaft 22 is fixedly connected in the rectangular frame 1.

[0045] The clamping part 3 includes a mounting plate 31 slidably connected to the corresponding track shaft and a clamping plate 32 detachably connected to the mounting plate; on one side of the mounting plate 31 close to the material 4 to be clamped, two fixing screw holes 311 are provided; the fixing screws installed in the fixing screw holes 311 pass through the clamping plate 32; on the side of the clamping plate 32 away from the material 4 to be clamped, two setscrew holes 321 are provided; the setscrew installed in the setscrew hole 321 abuts against the mounting plate 31 for adjusting the angle between the clamping plate 32 and the mounting plate 31.

[0046] On the sides of the mounting plate 31 and the clamping plate 32 facing the material 4 to be clamped, two inclined surfaces 33 are symmetrically provided respectively; the inclined surfaces 33 are respectively located on the side close to the adjacent clamping part 3.

[0047] At the bottom end of the rectangular frame 1, a plurality of L-shaped feet 11 are provided; on the two perpendicular sides of the feet 11, waist-shaped holes 111 are provided respectively; the length directions of the two waist-shaped holes 111 are perpendicular to each other; the waist-shaped holes 111 for installing the rectangular frame 1 are horizontally arranged.

[0048] On the clamping part 3 slidably connected to the track shaft in the longitudinal stretching part, a longitudinal reading head 51 is provided; on the upper part of the rectangular frame 1, a first magnetic scale sticker plate 52 is provided; a first magnetic scale is pasted on the first magnetic scale sticker plate 52 opposite to the longitudinal reading head 51.

[0049] In the two clamping parts 3 of the transverse stretching part, a transverse reading head 53 is provided on one clamping part 3, and a second magnetic scale opposite to the transverse reading head 53 is provided on the other clamping part 3; a second magnetic scale sticker plate 54 is provided on the corresponding clamping part 3; the second magnetic scale is pasted on the second magnetic scale sticker plate 54.

[0050] A digital display panel 5 is provided at the upper end of the rectangular frame 1; the digital display panel 5 is electrically connected to the transverse reading head 53 and the longitudinal reading head 51.

[0051] Two slide rails 13 are provided at the inner bottom end of the rectangular frame 1; the lower ends of the clamping parts 3 on the transverse stretching part are respectively provided with sliders 12 slidably connected to the slide rails 13; among them, the lower end of the clamping part 3 installed with the transverse reading head 53 is provided with a first slider; the lower end of the clamping part 3 installed with the second magnetic scale is provided with two second sliders.

[0052] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present invention are covered by the patent scope of the present invention.

Claims

1. A digital display type manual biaxial stretching device, characterized in that: It includes a rectangular frame and two stretching parts arranged inside the rectangular frame; each stretching part includes two mutually parallel track shafts arranged inside the rectangular frame, two clamping parts respectively arranged between the two track shafts, and a driving part arranged on the rectangular frame for driving at least one of the clamping parts to slide; the track shafts in the two stretching parts are longitudinally arranged and horizontally arranged respectively; wherein, the enclosed area formed by the four track shafts is unobstructed; one side of the rectangular frame is detachably connected with a generator facing the enclosed area; the generator is used to apply an external stimulus to the material to be clamped in the enclosed area; the external stimulus is light, terahertz wave or magnetic field.

2. The stretching device according to claim 1, characterized in that: The two track shafts in the stretching part are respectively an optical axis arranged inside the rectangular frame and a rotating shaft rotatably connected inside the rectangular frame; the driving part includes a lead screw arranged on the corresponding clamping part and a lead screw nut gear rotatably connected to the rectangular frame; the lead screw nut gear is in threaded connection with the lead screw; the lead screw nut gear is in transmission connection with the rotating shaft.

3. The stretching device according to any one of claims 1-2, characterized in that: The clamping part includes a mounting plate slidably connected to the corresponding track shaft and a clamping plate detachably connected to the mounting plate; two fixing screw holes are arranged on one side of the mounting plate close to the material to be clamped; the fixing screws installed in the fixing screw holes pass through the clamping plate; two setscrew holes are arranged on the side of the clamping plate away from the material to be clamped; the setscrew installed in the setscrew hole abuts against the mounting plate for adjusting the included angle between the clamping plate and the mounting plate.

4. The stretching device according to any one of claims 1-2, characterized in that: The two stretching parts are respectively a horizontally arranged transverse stretching part and a longitudinally arranged longitudinal stretching part; the transverse stretching part includes two symmetrically arranged clamping parts horizontally slidably connected to the corresponding track shafts; the longitudinal stretching part includes a clamping part longitudinally slidably connected to the corresponding track shaft, and the other clamping part is arranged at the inner bottom end of the rectangular frame.

5. The stretching device according to any one of claims 1-2, characterized in that: A plurality of L-shaped feet are arranged at the bottom end of the rectangular frame; waist-shaped holes are respectively arranged on the two perpendicular sides of the feet; the length directions of the two waist-shaped holes are perpendicular to each other; the waist-shaped holes for installing the rectangular frame are horizontally arranged.

6. The stretching device according to claim 3, characterized in that: Two inclined surfaces are symmetrically arranged on the sides of the mounting plate and the clamping plate facing the material to be clamped; the inclined surfaces are respectively located on the sides close to the adjacent clamping parts.

7. The stretching device according to claim 2, characterized in that: A small gear is coaxially arranged on the rotating shaft; the number of teeth of the lead screw nut gear is greater than that of the gear on the small gear; at least one end of the rotating shaft is coaxially provided with a handwheel.

8. The stretching device according to claim 4, characterized in that: Among the two clamping parts of the transverse stretching part, a transverse reading head is arranged on one clamping part, and a second magnetic grating scale facing the transverse reading head is arranged on the other clamping part; a longitudinal reading head is arranged on the clamping part longitudinally slidably connected to the track shaft in the longitudinal stretching part; a first magnetic grating scale facing the longitudinal reading head is arranged on the rectangular frame.

9. The stretching device according to claim 8, characterized in that: A digital display panel is arranged at the upper end of the rectangular frame; the digital display panel is electrically connected to the transverse reading head and the longitudinal reading head.

10. The stretching device according to claim 8, characterized in that: Two slide rails are provided at the inner bottom end of the rectangular frame; a first slider is provided at the lower end of the clamping part where the transverse reading head is installed; two second sliders are provided at the lower end of the clamping part where the second magnetic grating ruler is installed; the first slider and the second sliders are respectively slidably connected to the corresponding slide rails.

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