Tensile extension testing device for bar production

Abstract

The utility model discloses a tensile extension testing device for bar production, and relates to the technical field of metal bar production performance detection. The stretching extension testing device for bar production comprises a device bottom plate and a self-adjusting clamping mechanism, the self-adjusting clamping mechanism comprises a moving frame, a moving plate, a mounting plate, a rotating shaft, a clamping wheel, a first gear, a second gear, a bar clamping plate and a tooth groove, the moving frame is slidably connected to the top of the device bottom plate, the moving plate is fixedly connected with the moving frame, and the mounting plate is fixedly connected with the rotating shaft. When a bar moves downwards, a clamping wheel is driven to rotate, an arc-shaped anti-skid layer moves and clamps the bar, so that the clamping force of the arc-shaped anti-skid layer on the bar is larger and larger, the clamping stability of the bar can be guaranteed, and the problems that a common clamping mechanism cannot easily achieve fixation of the metal bar, and the clamping efficiency is high are solved. The problem that the test structure is affected due to the fact that the metal bar is prone to sliding under the condition that the clamping force applied to the metal bar is not changed along with the increase of the tensile force in the tensile test is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal bar production performance detection technical field, especially in bar production is with tensile ductility testing device. BACKGROUND

[0002] Through tensile detection, various important performance indexes of metal bar in the stress process can be obtained, such as elastic modulus, yield strength, tensile strength and the like, these data are the basis of material performance evaluation, help to comprehensively understand the behavior performance of metal under different stress states, the elongation of material before fracture can be measured, the ductility of metal can be accurately evaluated, and it is very important for the application scene that metal has certain deformation capacity under stress, tensile detection can carry out mechanical detection on raw materials, semi-finished products and finished products in production process, thereby reducing cost, improving quality, eliminating safety accidents, and the materials or finished products of bearing equipment and pressure-bearing equipment must be subjected to mechanical detection according to national standards, which is a necessary condition for whether the product meets the national standards.

[0003] When the metal bar made of metal material is subjected to tensile ductility, the metal bar is not easy to be fixed by the ordinary clamping mechanism due to the smooth surface of the metal bar and the circular cross section and the overall cylindrical shape, under the condition that the clamping force applied to the metal bar does not change with the increase of the tensile force in the tensile experiment, the metal bar is easy to slide, thereby affecting the test structure, and therefore a stable tensile ductility testing device for bar production is needed. UTILITY MODEL CONTENT

[0004] The utility model is directed at least to solve one of the technical problems in the prior art, and provides a tensile ductility testing device for bar production, which can solve the problem that the ordinary clamping mechanism is not easy to fix the metal bar, under the condition that the clamping force applied to the metal bar does not change with the increase of the tensile force in the tensile experiment, the metal bar is easy to slide, thereby affecting the test structure.

[0005] To achieve the above object, the utility model provides following technical scheme: a stretching and ductility testing device for bar production, including device bottom plate and self -adjusting clamping mechanism, self -adjusting clamping mechanism includes moving frame, moving plate, mounting plate, rotating shaft, clamping wheel, gear one, gear two, bar clamping plate and tooth slot, moving frame slidingly connects at the top of device bottom plate, the number of moving frame is two and is respectively symmetrically established at the top of device bottom plate, moving plate is fixedly connected with moving frame, the number of mounting plate is multiple and all is fixedly connected on the surface of moving plate, the number of rotating shaft is multiple and is respectively rotatably connected on the opposite side of two adjacent mounting plate, clamping wheel is fixedly sleeved on the outer surface of rotating shaft, gear one is fixedly sleeved on the outer surface of rotating shaft, gear two is fixedly sleeved on the outer surface of rotating shaft, gear two is located below gear one and is engagedly connected with gear one, bar clamping plate slidingly connects at the top of moving frame, bar clamping plate is slidingly connected with moving plate, tooth slot is set up at the top of bar clamping plate, and tooth slot is engagedly connected with gear two.

[0006] Preferably, the outer surface of the clamping wheel is provided with a circular anti-skid layer.

[0007] Preferably, the surface of the bar clamping plate is provided with an arc-shaped anti-skid layer.

[0008] Preferably, the top of the device bottom plate is fixedly connected with two device side plates, the surface of each device side plate is fixedly connected with a device top plate, the surface of each device side plate is fixedly connected with a plurality of hydraulic cylinders, and the end of each hydraulic cylinder away from the device side plate is fixedly connected with the moving frame.

[0009] Preferably, the top of the device bottom plate is provided with a sliding groove for the sliding of the moving frame.

[0010] Preferably, the top of the device top plate is fixedly connected with a limiting strip, the bottom of the moving frame is provided with a limiting groove matched with the limiting strip, and the device top plate is slidingly connected with the moving frame.

[0011] Preferably, the bottom of the device bottom plate is fixedly connected with a device base, and the surface of the device bottom plate is provided with a slot.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1、The stretching and ductility testing device for bar production, when the bar moves downward, the clamping wheel is driven to rotate, the arc-shaped anti-skid layer moves and clamps the bar, the clamping force of the arc-shaped anti-skid layer on the bar becomes larger and larger, and thus the clamping stability of the bar is ensured, the problem that the ordinary clamping mechanism cannot easily fix the metal bar and the metal bar easily slides under the condition that the clamping force on the metal bar does not change with the increase of the pulling force in the stretching experiment is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model is further illustrated below in combination with the drawings and embodiments:

[0015] Figure 1 It is the schematic diagram of the body of the utility model;

[0016] Figure 2 It is the schematic diagram of the clamping wheel of the utility model;

[0017] Figure 3 It is the schematic diagram of the limiting strip of the utility model;

[0018] Figure 4 It is the schematic diagram of the utility model's Figure 1 The schematic diagram of A place in the middle.

[0019] Reference signs: 1, device bottom plate; 2, device base; 3, device side plate; 4, device top plate; 5, moving frame; 6, sliding slot; 7, hydraulic cylinder; 8, moving plate; 9, slot; 10, mounting plate; 11, rotating shaft; 12, clamping wheel; 13, circular anti-slip layer; 14, gear one; 15, gear two; 16, bar clamping plate; 17, gear slot; 18, arc-shaped anti-slip layer; 19, limiting strip; 20, limiting groove. DETAILED DESCRIPTION

[0020] This part will describe the specific embodiments of the utility model in detail, and the preferred embodiments of the utility model are shown in the drawings, and the drawings are used to supplement the description of the text part in the form of graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0021] In the description of the utility model, it is understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model.

[0022] In the description of the utility model, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described to the first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0023] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installing, connecting should be understood broadly, and the specific meaning of the above words in the utility model can be determined by the person skilled in the art in combination with the specific content of the technical scheme.

[0024] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a kind of stretching and spreading test device for bar production, including device bottom plate 1 and self-regulating clamping mechanism, self-regulating clamping mechanism includes moving frame 5, moving plate 8, mounting plate 10, rotating shaft 11, clamping wheel 12, gear one 14, gear two 15, bar clamping plate 16 and tooth slot 17, moving frame 5 is slidably connected in the top of device bottom plate 1, the quantity of moving frame 5 is two and is respectively symmetrically arranged in the top of device bottom plate 1, moving plate 8 is fixedly connected with moving frame 5, the quantity of mounting plate 10 is multiple and is all fixedly connected in the surface of moving plate 8, the quantity of rotating shaft 11 is multiple and is respectively rotationally connected in the opposite face of two adjacent mounting plate 10, clamping wheel 12 is fixedly sleeved in the outer surface of rotating shaft 11, gear one 14 is fixedly sleeved in the outer surface of rotating shaft 11, gear two 15 is fixedly sleeved in the outer surface of rotating shaft 11, gear two 15 is located below gear one 14 and is engagedly connected with gear one 14, bar clamping plate 16 is slidably connected in the top of moving frame 5, bar clamping plate 16 is slidably connected with moving plate 8, tooth slot 17 is opened in the top of bar clamping plate 16, tooth slot 17 is engagedly connected with gear two 15.

[0025] Further, the outer surface of the clamping wheel 12 is provided with a circular anti-skid layer 13, and the surface of the bar clamping plate 16 is provided with an arc-shaped anti-skid layer 18. When the bar is clamped, the bar is placed between the two clamping wheels 12, the outer surface of the bar is in contact with the circular anti-skid layer 13, then the bar is moved downward to drive the clamping wheel 12 to rotate, and in turn drive the gear one 14 to rotate. The gear two 15 and the gear one 14 are engaged and rotate at the same time. The gear two 15 rotates to cooperate with the tooth groove 17 to drive the bar clamping plate 16 to move, until the arc-shaped anti-skid layer 18 provided on the bar clamping plate 16 clamps the outer surface of the bar. Because the bar is subjected to tensile elongation test and the bar is subjected to tensile elongation test, the bar has a downward movement tendency. When the bar moves downward, it drives the clamping wheel 12 to rotate and moves the arc-shaped anti-skid layer 18 to clamp the bar. Therefore, the clamping force of the bar by the arc-shaped anti-skid layer 18 will become larger and larger. The circular anti-skid layer 13 and the arc-shaped anti-skid layer 18 are made of TPE anti-skid material, which has a high friction coefficient, can provide better grip and anti-skid performance on the contact surface, has good wear resistance, and the anti-skid performance can be effectively maintained during long-term use, so it is not easy to reduce due to wear, thereby ensuring the clamping stability of the bar, and solving the problem that the ordinary clamping mechanism is not easy to fix the metal bar, and in the tensile test, as the tensile force increases, the clamping force applied to the metal bar remains unchanged, and the metal bar is easy to slip, thereby affecting the test structure.

[0026] Secondly, the top of the device bottom plate 1 is fixedly connected with two device side plates 3, the surface of each device side plate 3 is fixedly connected with a device top plate 4, the surface of each device side plate 3 is fixedly connected with a plurality of hydraulic cylinders 7, one end of each hydraulic cylinder 7 away from the device side plate 3 is fixedly connected with a moving frame 5, the top of the device bottom plate 1 is provided with a sliding groove 6 for the sliding of the moving frame 5, the top of the device top plate 4 is fixedly connected with a limiting strip 19, the bottom of the moving frame 5 is provided with a limiting groove 20 matched with the limiting strip 19, the device top plate 4 is slidingly connected with the moving frame 5, the bottom of the device bottom plate 1 is fixedly connected with a device base 2, and the surface of the device bottom plate 1 is provided with a slot 9. The moving frame 5 can be driven to move by the hydraulic cylinder 7, thereby driving the moving plate 8 and the clamping wheel 12 to preliminarily clamp the surface of the bar. The sliding groove 6 is used to increase the stability of the moving frame 5 moving on the surface of the device bottom plate 1. The cooperation of the limiting strip 19 and the limiting groove 20 increases the stability of the moving frame 5 moving on the surface of the device top plate 4.

[0027] Working principle: the bar is placed between two clamping wheels 12, the moving frame 5 can be driven by the hydraulic cylinder 7 to move, so as to drive the moving plate 8 and the clamping wheel 12 to preliminarily clamp the surface of the bar, the outer surface of the bar is in contact with the circular anti-skid layer 13, then the bar is moved downward, the clamping wheel 12 is driven to rotate, in turn the gear one 14 is driven to rotate, the gear two 15 and the gear one 14 are engaged and rotate at the same time, the gear two 15 is driven to move by the action of the gear slot 17, until the arc-shaped anti-skid layer 18 arranged on the bar clamping plate 16 clamps the outer surface of the bar, because the bar is subjected to pulling force downward during the tensile elongation test, the bar has the tendency to move downward, when the bar moves downward, the clamping wheel 12 is driven to rotate and the arc-shaped anti-skid layer 18 is moved to clamp the bar, therefore the clamping force of the arc-shaped anti-skid layer 18 on the bar is getting larger and larger, so that the clamping stability of the bar can be guaranteed.

[0028] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, within the knowledge range of ordinary skilled in the art, various changes can be made without departing from the purpose of the utility model.

Claims

1. A tensile ductility testing device for rod production, characterized by, The utility model relates to a kind of bar clamping device, including: Device base plate (1); Self-regulating clamping mechanism, self-regulating clamping mechanism includes moving frame (5), moving plate (8), mounting plate (10), rotating shaft (11), clamping wheel (12), gear one (14), gear two (15), bar clamping plate (16) and tooth slot (17), moving frame (5) is slidably connected at the top of device base plate (1), the number of moving frame (5) is two and is respectively symmetrically arranged at the top of device base plate (1), moving plate (8) is fixedly connected with moving frame (5), the number of mounting plate (10) is multiple and is all fixedly connected on the surface of moving plate (8), the number of rotating shaft (11) is multiple and is respectively rotatably connected on the opposite surface of two adjacent mounting plate (10); Wherein, clamping wheel (12) is fixedly sleeved on the outer surface of rotating shaft (11), gear one (14) is fixedly sleeved on the outer surface of rotating shaft (11), gear two (15) is fixedly sleeved on the outer surface of rotating shaft (11), and gear two (15) is located below gear one (14) and is engagedly connected with gear one (14); Wherein, bar clamping plate (16) is slidably connected at the top of moving frame (5), bar clamping plate (16) is slidably connected with moving plate (8), tooth slot (17) is formed in the top of bar clamping plate (16), and tooth slot (17) is engagedly connected with gear two (15).

2. A tensile ductility testing device for use in the production of a rod according to claim 1, characterized in that: The outer surface of the clamping wheel (12) is provided with a circular anti-slip layer (13).

3. A tensile ductility testing device for use in the production of a rod according to claim 1, characterized in that: The surface of the bar clamping plate (16) is provided with an arc-shaped anti-slip layer (18).

4. A tensile ductility testing device for use in the production of a rod according to claim 1, characterized in that: The top of the device base plate (1) is fixedly connected with two device side plates (3), the surface of each device side plate (3) is fixedly connected with a device top plate (4), the surface of each device side plate (3) is fixedly connected with a plurality of hydraulic cylinders (7), and the end of each hydraulic cylinder (7) away from the device side plate (3) is fixedly connected with the moving frame (5).

5. A tensile ductility testing device for use in the production of a rod according to claim 1, characterized in that: The top of the device base plate (1) is provided with a sliding groove (6) for the sliding of the moving frame (5).

6. A tensile ductility testing device for use in the production of a rod according to claim 4, characterized in that: The top of the device top plate (4) is fixedly connected with a limiting strip (19), the bottom of the moving frame (5) is provided with a limiting groove (20) matched with the limiting strip (19), and the device top plate (4) is slidably connected with the moving frame (5).

7. A tensile ductility testing device for use in the production of a rod according to claim 1, characterized in that: The bottom of the device base plate (1) is fixedly connected with a device base (2), and the surface of the device base plate (1) is provided with a slot (9).

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