Tension testing machine

Abstract

The utility model discloses a tension testing machine which comprises a base, a rack fixedly connected to the top of the base and a transmission plate in transmission connection to the surface of the rack, a clamping jaw is installed on the inner side of the transmission plate, a detection material is clamped on the inner side of the clamping jaw, and connecting blocks are fixedly connected to the two ends of the inner side of the transmission plate. The inner side of the connecting block is movably connected with a swing rod through a bearing, the side, away from the connecting block, of the swing rod is fixedly connected with a protection frame, the surface of a detection material is sleeved with the protection frame, the front face and the back face of the rack are fixedly connected with limiting rods, and the two ends of the swing rod extend to the outer side of the connecting block and are fixedly connected with stress rods. The connecting blocks at the two ends of the transmission plate are connected with the bearings of the swing rods, so that the protective frame can carry out dynamic angle adjustment around a detected material, the swing rods rotate to drive the protective frame to form centripetal wrapping at the moment that the material is broken, and the splashing range is limited within the diameter of the protective frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to tension test technical field, concretely to a tension testing machine. BACKGROUND

[0002] Tension test is a standard test method for determining the mechanical properties of materials under tensile loading, which is widely used in material science, engineering manufacturing, quality control and other fields, helping to evaluate the strength, plasticity and toughness of materials and other key indicators.

[0003] For example, the patent application number of Chinese patent network is: 202320462645.1, and the patent name is: tension testing machine, including base, the top of base is equipped with rack and operation panel, the upper surface of base is fixedly installed with two symmetrical bearing seats, the top of rack is fixedly installed with variable speed motor, two bearing seats are all rotationally connected with bidirectional screw rod, the outer surfaces of two bidirectional screw rods are all movably sleeved with two up and down distributed nuts, the ends away from the center of rack of nut are all fixedly connected with sliding block slidingly connected with the side surface of rack, the upper ends of two bidirectional screw rods are all fixedly sleeved with pulley, and the pulley is connected with belt between two pulleys, the output end of variable speed motor is fixedly connected with the top of one bidirectional screw rod, the left and right two nuts are fixedly connected with round rod, and the outer surface of round rod is fixedly sleeved with two symmetrical mounting plates. The utility model can be flexibly adjusted according to the shape of material, and is suitable for clamping and fixing different shape materials.

[0004] However, the existing tension testing machine mainly tests by open-air clamping and pulling, when the material with elasticity is pulled to mechanical rupture, the broken material will be thrown out to the outside and cause beating injury to the surrounding workers.

[0005] Therefore, it is necessary to design and reform the tension testing machine. UTILITY MODEL CONTENT

[0006] To solve the problems in the above background art, the utility model aims to provide a tension testing machine, which has the advantages of improving operation safety, and solves the problem that the existing tension testing machine mainly tests by open-air clamping and pulling, when the material with elasticity is pulled to mechanical rupture, the broken material will be thrown out to the outside and cause beating injury to the surrounding workers.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a tension testing machine, comprising a base;

[0008] The rack is fixedly connected to the top of the base.

[0009] The transmission plate is transmission connected to the surface of the rack.

[0010] The inner side of the transmission plate is provided with a clamping jaw, the inner side of the clamping jaw clamps a detection material, both ends of the inner side of the transmission plate are fixedly connected with connecting blocks, the inner side of the connecting block is movably connected with a swing rod through a bearing, the swing rod is fixedly connected with a protective frame on the side away from the connecting block, and the protective frame is sleeved on the surface of the detection material.

[0011] As preferred in the utility model, the front face and the back face of the rack are both fixedly connected with a limiting rod, both ends of the swing rod extend to the outer side of the connecting block and are fixedly connected with a stress rod, the side of the stress rod away from the swing rod extends to the inner side of the limiting rod and is slidably connected with the limiting rod.

[0012] As preferred in the utility model, the inner side of the swing rod is fixedly connected with an elastic plate, the side of the elastic plate away from the swing rod is in contact with the surface of the transmission plate, and the elastic plate has elasticity.

[0013] As preferred in the utility model, the inner side of the swing rod is fixedly connected with an elastic plate, the side of the elastic plate away from the swing rod is in contact with the surface of the transmission plate, and the elastic plate has elasticity.

[0014] As preferred in the utility model, the inner side of the swing rod is fixedly connected with an elastic plate, the side of the elastic plate away from the swing rod is in contact with the surface of the transmission plate, and the elastic plate has elasticity.

[0015] As preferred in the utility model, the surface of the limiting rod is sleeved with a sleeve pipe, the outer surface of the sleeve pipe is in contact with the surface of the stress rod, and the sleeve pipe is slidably connected with the stress rod.

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

[0017] 1、The utility model discloses a transmission plate both ends connecting block and the bearing connection of swing rod, make the protective frame can around detection material dynamic angle adjustment, in the material fracture instantaneous through swing rod rotation drive protective frame form centripetal package, limit the range of spatter in the protective frame diameter.

[0018] 2、The utility model discloses a limiting rod and stress rod's sliding fit form double track restraint system, prevent the protective frame excessive deflection and lead to the failure of protection, limiting rod can utilize the power of transmission plate control swing rod automatic swing closing simultaneously.

[0019] 3、The utility model discloses a elastic plate and transmission plate surface contact form pre -pressing state, store elastic potential energy when material normal stretch, can control swing rod synchronous swing reset when transmission plate reset.

[0020] 4. This utility model uses the extension rod and the pin connection of the movable block to form a second rotatable protection for the shielding frame, which can intercept the debris a second time.

[0021] 5. This utility model converts the linear motion of the transmission plate into the rotational motion of the extension rod through the meshing transmission of gears and toothed plates, achieving precise matching between the protection angle and the tensile displacement, and saving the operation steps of setting up additional drive equipment.

[0022] 6. By setting a sleeve, this utility model can protect the limiting rod and reduce the wear caused by the limiting rod and the force-bearing rod during contact friction. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0025] Figure 3 This is a partial structural diagram of the present invention;

[0026] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0027] In the diagram: 1. Base; 2. Frame; 3. Transmission plate; 4. Claw; 5. Detection material; 6. Connecting block; 7. Swing rod; 8. Protective frame; 9. Limiting rod; 10. Force rod; 11. Spring plate; 12. Movable block; 13. Extension rod; 14. Shielding frame; 15. Gear; 16. Tooth plate; 17. Sleeve. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1 to 4 As shown, the tensile testing machine provided by this utility model includes a base 1;

[0030] A frame 2 is fixedly connected to the top of the base 1;

[0031] The transmission plate 3 is connected to the surface of the frame 2;

[0032] The inner side of the transmission plate 3 is provided with a clamping jaw 4, the inner side of the clamping jaw 4 clamps a detection material 5, both ends of the inner side of the transmission plate 3 are fixedly connected with a connecting block 6, the inner side of the connecting block 6 is movably connected with a swing rod 7 through a bearing, one side of the swing rod 7 away from the connecting block 6 is fixedly connected with a protective frame 8, and the protective frame 8 is sleeved on the surface of the detection material 5.

[0033] Reference Figure 3 The front surface and the back surface of the rack 2 are fixedly connected with a limiting rod 9, both ends of the swing rod 7 extend to the outer side of the connecting block 6 and are fixedly connected with a stress rod 10, and one side of the stress rod 10 away from the swing rod 7 extends to the inner side of the limiting rod 9 and is slidably connected with the limiting rod 9.

[0034] As a technical optimization scheme of the utility model, the double-track constraint system is formed through the sliding cooperation of the limiting rod 9 and the stress rod 10, the excessive deflection of the protective frame 8 is prevented to cause the protection failure, and meanwhile the limiting rod 9 can control the swing rod 7 to automatically swing and close by using the power of the transmission plate 3.

[0035] Reference Figure 4 The inner side of the swing rod 7 is fixedly connected with an elastic plate 11, one side of the elastic plate 11 away from the swing rod 7 is in contact with the surface of the transmission plate 3, and the elastic plate 11 has elasticity.

[0036] As a technical optimization scheme of the utility model, the pre-pressing state is formed through the surface contact of the elastic plate 11 and the transmission plate 3, the elastic potential energy is stored when the material is normally stretched, and the swing rod 7 can be controlled to swing and reset synchronously when the transmission plate 3 resets.

[0037] Reference Figure 4 Both sides of the inner wall of the rack 2 are fixedly connected with a movable block 12, the inner side of the movable block 12 is movably connected with an extension rod 13 through a pin shaft, one side of the extension rod 13 away from the movable block 12 is fixedly connected with a shielding frame 14, and the shielding frame 14 is sleeved on the surface of the detection material 5 and located on the inner side of the protective frame 8.

[0038] As a technical optimization scheme of the utility model, the second rotatable protection is formed for the shielding frame 14 through the pin shaft connection of the extension rod 13 and the movable block 12, and the fragments can be secondarily intercepted.

[0039] Reference Figure 4 Both sides of the extension rod 13 are fixedly connected with a gear 15, the top of the bottom transmission plate 3 is fixedly connected with a toothed plate 16, and one side of the toothed plate 16 away from the transmission plate 3 extends to the inner side of the gear 15 and is intermeshed with the gear 15.

[0040] As a technical optimization scheme of the utility model, the linear motion of the transmission plate 3 is converted into the rotary motion of the extension rod 13 through the meshing transmission of the gear 15 and the toothed plate 16, the accurate matching of the protection angle and the stretching displacement is realized, and the operation steps of additionally setting a driving device are saved.

[0041] Reference Figure 4 The surface of the limiting rod 9 is sleeved with a sleeve pipe 17, the outer surface of the sleeve pipe 17 is in contact with the surface of the stress rod 10, and the sleeve pipe 17 is in sliding connection with the stress rod 10.

[0042] As a technical optimization scheme of the utility model, the sleeve pipe 17 is arranged, so that the limiting rod 9 can be protected, and the abrasion of the limiting rod 9 and the stress rod 10 during contact and friction is reduced.

[0043] The working principle and use process of the utility model are as follows: the detection material 5 is clamped at both ends in the clamping jaw 4 on the inner side of the transmission plate 3, after the equipment is started, the transmission plate 3 performs reverse linear motion on the surface of the rack 2, a tensile load is applied to the material, the transmission plate 3 carries the stress rod 10 to move outward during the stretching process, when the stress rod 10 is in contact with the limiting rod 9, the stress rod 10 is extruded and drives the swing rod 7 to swing around the pin shaft as the axis, the swing rod 7 can drive the protective frame 8 to be sleeved on the surface of the detection material 5 during the swinging process, so that the effect of shielding and limiting the detection material 5 is achieved, and the detection material 5 is prevented from flying out when it is broken, when the transmission plate 3 continues to move, the toothed plate 16 can drive the gear 15 to rotate, the gear 15 drives the extension rod 13 to swing synchronously, when the extension rod 13 carries the shielding frame 14 to be sleeved on the surface of the detection material 5, the effect of auxiliary protection of the longer detection material 5 can be achieved.

[0044] In summary: the tensile testing machine is connected between the transmission plate 3 and the bearing of the swing rod 7 through the two end connecting blocks 6, so that the protective frame 8 can be dynamically adjusted in angle around the detection material 5, and the protective frame 8 is formed to be centripetal wrapping through the rotation of the swing rod 7 at the moment of material breaking, so that the spatter range is limited within the diameter of the protective frame 8.

[0045] It should be noted that, in this text, relational terms such as first and second and the like are used merely to differentiate one entity or action from another, without necessarily requiring or implying any actual such relationship or order between or among the entities or actions. Also, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0046] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tension testing machine, comprising a base (1); a rack (2) fixedly connected to the top of the base (1); a transmission plate (3) transmission connected to the surface of the rack (2); characterized in that The inner side of the transmission plate (3) is provided with a claw (4), the inner side of the claw (4) clamps a detection material (5), both ends of the inner side of the transmission plate (3) are fixedly connected with a connecting block (6), the inner side of the connecting block (6) is movably connected with a swing rod (7) through a bearing, the side away from the connecting block (6) of the swing rod (7) is fixedly connected with a protective frame (8), and the protective frame (8) is sleeved on the surface of the detection material (5).

2. A tensile testing machine according to claim 1, characterised in that: The front and back of the rack (2) are fixedly connected with a limiting rod (9), both ends of the swing rod (7) extend to the outer side of the connecting block (6) and are fixedly connected with a stress rod (10), and the side away from the swing rod (7) of the stress rod (10) extends to the inner side of the limiting rod (9) and is slidably connected with the limiting rod (9).

3. A tensile testing machine according to claim 1, characterised in that: The inner side of the swing rod (7) is fixedly connected with an elastic plate (11), the side away from the swing rod (7) of the elastic plate (11) is in contact with the surface of the transmission plate (3), and the elastic plate (11) has elasticity.

4. A tensile testing machine according to claim 1, characterised in that: Both sides of the inner wall of the rack (2) are fixedly connected with a movable block (12), the inner side of the movable block (12) is movably connected with an extension rod (13) through a pin shaft, the side away from the movable block (12) of the extension rod (13) is fixedly connected with a shielding frame (14), and the shielding frame (14) is sleeved on the surface of the detection material (5) and located on the inner side of the protective frame (8).

5. A tensile testing machine according to claim 4, characterised in that: Both sides of the extension rod (13) are fixedly connected with a gear (15), the top of the bottom transmission plate (3) is fixedly connected with a toothed plate (16), and the side away from the transmission plate (3) of the toothed plate (16) extends to the inner side of the gear (15) and is in meshing with the gear (15).

6. A tensile testing machine according to claim 2, characterised in that: The surface of the limiting rod (9) is sleeved with a sleeve (17), the outer surface of the sleeve (17) is in contact with the surface of the stress rod (10), and the sleeve (17) is slidably connected with the stress rod (10).

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