Universal testing machine with anti-deviation mechanism

Abstract

The utility model provides a universal testing machine with an anti-offset mechanism, and relates to the technical field of universal testing machines, the universal testing machine comprises a base, two ends of the upper surface of the base are respectively and movably provided with a positive and negative screw rod, the upper and lower ends of the rod body of the positive and negative screw rod are respectively provided with a moving frame through a thread sleeve, and the moving frames are relatively parallel. When a user needs to place raw materials, the connecting plates are pulled through the handle, the connecting plate at the front end drives the clamping frame to move outwards, meanwhile, the connecting plate on the rear side and the clamping frame synchronously move outwards through cooperation of the gear and the rack, and the raw materials are placed in the clamping frame. A user can place raw materials between the two clamping frames and the clamping plates, after the raw materials are placed, the user loosens the handle, the two clamping frames clamp and position the raw materials, the raw materials are accurately located between the clamping plates, and the deviation situation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of universal testing machines, and more specifically, to a universal testing machine with an anti-offset mechanism. Background Technique

[0002] A universal testing machine is a material testing machine that integrates functions such as tension, bending, compression, shear, and ring stiffness. It is mainly used for mechanical property tests of metal and non-metal materials. When testing a sample with a universal testing machine, the user often manually inserts the sample into the reserved slot of the moving frame, and then uses a hydraulic cylinder to push the clamping plate to clamp the lower end of the sample. However, when the user manually places the sample, the position of the sample often deviates due to human influence. However, since the deviation position or angle is small and not easy to be detected, when the universal testing machine tests the raw material, the experimental data will deviate. Therefore, we propose a universal testing machine with an anti-offset mechanism to solve the above problems. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a universal testing machine with an anti-offset mechanism, which solves the problem that when the user manually places the sample, the position of the sample often deviates due to human influence. However, since the deviation position or angle is small and not easy to be detected, when the universal testing machine tests the raw material, the experimental data will deviate.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A universal testing machine with an anti-offset mechanism includes a base. At both ends of the upper surface of the base, a positive and negative lead screw is movably installed. At the upper and lower ends of the lead screw of the positive and negative lead screw, a moving frame is installed through a threaded sleeve, and the moving frames are parallel to each other. Inside the lower moving frame, an anti-offset mechanism for preventing the raw material from deviating is installed. At both ends of the inside of the base, a motor is installed respectively, and the output ends of the motors are respectively connected to the positive and negative lead screws. On both sides of the inner part of the mutually approaching ends of the moving frames, a clamping plate is installed respectively. At both ends of the inside of the moving frame, a hydraulic cylinder is installed respectively, and the output ends of the hydraulic cylinders are respectively connected to the clamping plates.

[0006] Preferably, on the front and rear sides of both ends of the upper surface of the base, a guide rod is installed respectively, and the rod bodies of the guide rods are movably installed through the inside of the moving frames respectively.

[0007] Preferably, the anti-offset mechanism includes a groove which is provided through the lower end inside the lower moving frame. A gear is movably installed in the middle of the groove, and racks are respectively movably installed at both ends inside the groove. The racks are respectively meshed with the gear.

[0008] Preferably, a fixed rod is fixedly installed in the middle of the groove. An activity groove is provided through the gear, and the rod body of the fixed rod is movably installed through the activity groove.

[0009] Preferably, a torsion spring is sleeved on the outer side of the rod body of the fixed rod inside the activity groove, and the torsion spring is connected to the fixed rod and the activity groove. A limit disk is installed at the lower end of the rod body of the fixed rod inside the activity groove, and the limit disk is snap-fitted inside the lower end of the activity groove.

[0010] Preferably, guide blocks are respectively installed at the lower ends of the racks. Guide grooves are respectively provided at both ends of the lower surface inside the groove. The guide blocks are respectively snap-fitted inside the guide grooves. Connecting plates are respectively installed at the ends of the racks away from each other, and the connecting plates are respectively located on the front and back sides of the moving frame. Clamping frames are respectively installed at the upper ends of the connecting plates. The clamping frames are located between the clamping plates. A handle is installed on the front surface of the front connecting plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] (1) When the user needs to place the raw material in the utility model, first pull the connecting plate through the handle, so that the front connecting plate drives the clamping frame to move outwards. At the same time, through the cooperation of the gear and the rack, the rear connecting plate and the clamping frame move outwards synchronously. Then the user can place the raw material between the two clamping frames and the clamping plates. After the raw material is placed, the user releases the handle, so that the two clamping frames clamp and position the raw material, making it accurately located between the clamping plates without deviation, thereby improving the accuracy of the test data of the raw material and being more convenient to use.

[0013] (2) In the utility model, through the cooperation of the torsion spring, the fixed rod and the gear, the gear drives the clamping frame to tightly clamp and position the raw material through the rack and the connecting plate, ensuring that the raw material remains stable during the clamping process, thereby avoiding the deviation of the raw material. At the same time, through the cooperation of the gear and the rack, the front and rear clamping frames can move synchronously, which is convenient for the user to place or take the raw material. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a universal testing machine with an anti-offset mechanism of the utility model;

[0015] Figure 2 This is the front view structural schematic diagram of a universal testing machine with an anti-offset mechanism according to the present utility model;

[0016] Figure 3 This is the side view structural schematic diagram of a universal testing machine with an anti-offset mechanism according to the present utility model;

[0017] Figure 4 This is a universal testing machine with an anti-offset mechanism according to the present utility model Figure 2 The sectional structural schematic diagram at A-A in it;

[0018] Figure 5 This is a universal testing machine with an anti-offset mechanism according to the present utility model Figure 3 The sectional structural schematic diagram at B-B in it;

[0019] Figure 6 This is a universal testing machine with an anti-offset mechanism according to the present utility model Figure 2 The sectional structural schematic diagram at C-C in it;

[0020] Figure 7 This is a universal testing machine with an anti-offset mechanism according to the present utility model Figure 4 The enlarged structural schematic diagram at D in it;

[0021] Figure 8 This is a universal testing machine with an anti-offset mechanism according to the present utility model Figure 5 The enlarged structural schematic diagram at E in it.

[0022] In the figure: 1, base; 2, forward and reverse lead screw; 3, guide rod; 4, moving frame; 5, clamping plate; 6, anti-offset mechanism; 601, groove; 602, gear; 603, fixed rod; 604, movable groove; 605, limit disc; 606, torsion spring; 607, guide block; 608, guide groove; 609, rack; 610, connecting plate; 611, handle; 612, clamping frame; 7, hydraulic cylinder; 8, motor. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figures 1 to 8As shown in the figure, an embodiment of the utility model provides a universal testing machine with an anti-offset mechanism, which includes a base 1. At both ends of the upper surface of the base 1, a positive and negative screw rod 2 is movably installed respectively. At the upper and lower ends of the rod body of the positive and negative screw rod 2, a moving frame 4 is installed respectively through a threaded sleeve, and the moving frames 4 are parallel to each other. Inside the lower moving frame 4, an anti-offset mechanism 6 for preventing the raw material from offsetting is installed. At both ends of the inside of the base 1, a motor 8 is installed respectively. The output ends of the motors 8 are respectively connected to the positive and negative screw rods 2. On both sides of the inner part of the mutually approaching ends of the moving frames 4, a clamping plate 5 is installed respectively. At both ends of the inside of the moving frames 4, a hydraulic cylinder 7 is installed respectively. The output ends of the hydraulic cylinders 7 are respectively connected to the clamping plates 5.

[0025] As Figures 6 to 8 shown, in another embodiment of the utility model, on the front and back sides of both ends of the upper surface of the base 1, a guiding rod 3 is installed respectively. The rod bodies of the guiding rods 3 are respectively movably installed through the inside of the moving frames 4. The anti-offset mechanism 6 includes a groove 601, and the groove 601 runs through the lower end of the inside of the lower moving frame 4. In the middle of the inside of the groove 601, a gear 602 is movably installed. At both ends of the inside of the groove 601, a rack 609 is movably installed respectively. The racks 609 are respectively meshed with the gear 602. In the middle of the inside of the groove 601, a fixing rod 603 is fixedly installed. An activity groove 604 runs through the inside of the gear 602. The rod body of the fixing rod 603 is movably installed through the inside of the activity groove 604. On the outer side of the rod body of the fixing rod 603 located inside the activity groove 604, a torsion spring 606 is installed through a sleeve, and the torsion spring 606 is connected to the fixing rod 603 and the activity groove 604. At the lower end of the rod body of the fixing rod 603 located inside the activity groove 604, a limiting disc 605 is installed. The limiting disc 605 is snap-fitted inside the lower end of the activity groove 604. At the lower ends of the racks 609, a guiding block 607 is installed respectively. At both ends of the lower surface inside the groove 601, a guiding groove 608 is provided respectively. The guiding blocks 607 are respectively snap-fitted inside the guiding grooves 608. At the mutually remote ends of the racks 609, a connecting plate 610 is installed respectively, and the connecting plates 610 are respectively located on the front and back sides of the moving frames 4. At the upper ends of the connecting plates 610, a clamping frame 612 is installed respectively. The clamping frames 612 are located between the clamping plates 5. On the front surface of the front connecting plate 610, a handle 611 is installed.

[0026] The user first pulls the handle 611, causing the handle 611 to drive the connecting plate 610 at the front end and the clamping frame 612 to move outward. At the same time, the connecting plate 610 at the front end will drive the rack 609 to move, causing the rack 609 to drive the gear 602 to rotate. That is, the gear 602 cooperates with the fixed rod 603 to twist the torsion spring 606. At the same time, the gear 602 also pushes another rack 609 to move backward, causing it to push the connecting plate 610 and the clamping frame 612 at the rear side to move outward. Then, after the clamping frames 612 are separated, the user can place the raw material between the clamping plates 5. Then, the user slowly releases the handle 611, allowing the torsion spring 606 to control the gear 602 to rotate back to its original position. As a result, the gear 602 pulls the racks 609 respectively, causing the racks 609 to drive the connecting plates 610 and the clamping frames 612 to return to their original positions, enabling the clamping frames 612 to stably clamp and position the raw material, preventing the raw material from shifting. Then, the hydraulic cylinder 7 at the lower end can push the clamping plates 5 to clamp and position the raw material. After the raw material is clamped and positioned, the motor 8 controls the rotation of the lead screw 2 to adjust the distance between the two moving frames 4, allowing the upper end of the raw material to enter between the upper clamping plates 5. Then, through the push of the hydraulic cylinder 7 again, the clamping plates 5 clamp the upper end of the raw material. Then, the motor 8 can control the lead screw 2 to reverse, causing the lead screw 2 to control the up and down movement of the moving frame 4 to achieve the tensile test of the raw material;

[0027] The guide rod 3 is used to improve the stability of the moving frame 4 during movement;

[0028] The guide block 607 and the guide groove 608 are used to assist the movement of the rack 609, improve its stability during movement, and also used to position the rack 609 to avoid the separation between the rack 609 and the gear 602.

[0029] The working principle of the universal testing machine with an anti-offset mechanism:

[0030] In use, first, the user pulls the handle 611, causing the handle 611 to drive the connecting plate 610 at the front end and the clamping bracket 612 to move outward. At the same time, the connecting plate 610 at the front end will drive the rack 609 to move, causing the rack 609 to drive the gear 602 to rotate, that is, causing the gear 602 to cooperate with the fixed rod 603 to twist the torsion spring 606. At the same time, the gear 602 also pushes the other rack 609 to move backward, causing it to push the connecting plate 610 and the clamping bracket 612 at the rear side to move outward. Then, after the clamping brackets 612 are separated, the user can place the raw material between the clamping plates 5. Then, the user slowly releases the handle 611, allowing the torsion spring 606 to control the gear 602 to rotate back to its original position, so that the gear 602 pulls the racks 609 respectively, causing the racks 609 to drive the connecting plates 610 and the clamping brackets 612 to return to their original positions, enabling the clamping brackets 612 to stably clamp and position the raw material to prevent the raw material from shifting. Then, the hydraulic cylinder 7 at the lower end can push the clamping plate 5 to clamp and position the raw material. After the raw material is clamped and positioned, the motor 8 controls the rotation of the lead screw 2 to adjust the distance between the two moving brackets 4, allowing the upper end of the raw material to enter between the upper clamping plates 5. Then, through the push of the hydraulic cylinder 7 again, the clamping plate 5 clamps the upper end of the raw material. Then, the motor 8 can control the lead screw 2 to reverse, causing the lead screw 2 to control the up and down movement of the moving bracket 4 to perform a tensile test on the raw material.

[0031] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, based on the above description, other different forms of changes or variations can be made. It is impossible to list all the implementation manners here. Any obvious changes or variations derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A universal testing machine with an anti-offset mechanism, comprising a base (1), characterized in that: At both ends of the upper surface of the base (1), a left - right screw rod (2) is movably installed respectively. At the upper and lower ends of the rod body of the left - right screw rod (2), a moving frame (4) is installed respectively through threaded sleeves, and the moving frames (4) are parallel to each other. Inside the lower moving frame (4), an anti - deviation mechanism (6) for preventing the raw material from shifting is installed. At both ends inside the base (1), a motor (8) is installed respectively. The output ends of the motors (8) are connected to the left - right screw rod (2) respectively. On both sides of the inner part of the mutually - approaching ends of the moving frames (4), a clamping plate (5) is installed respectively. At both ends inside the moving frame (4), a hydraulic cylinder (7) is installed respectively. The output ends of the hydraulic cylinders (7) are connected to the clamping plates (5) respectively.

2. The universal testing machine with an anti-offset mechanism according to claim 1, wherein: On the front and back sides of both ends of the upper surface of the base (1), a guide rod (3) is installed respectively. The rod bodies of the guide rods (3) are movably installed through the inner parts of the moving frames (4) respectively.

3. The universal testing machine with an anti-offset mechanism according to claim 1, wherein: The anti - deviation mechanism (6) includes a groove (601). The groove (601) runs through the lower end inside the lower moving frame (4). Inside the middle of the groove (601), a gear (602) is movably installed. At both ends inside the groove (601), a rack (609) is movably installed respectively. The racks (609) are meshed with the gear (602) respectively.

4. The universal testing machine with an anti-offset mechanism according to claim 3, wherein: Inside the middle of the groove (601), a fixed rod (603) is fixedly installed. Inside the gear (602), an activity groove (604) is provided. The rod body of the fixed rod (603) is movably installed through the inside of the activity groove (604).

5. The universal testing machine with an anti-offset mechanism according to claim 4, wherein: On the outer side of the rod body of the fixed rod (603) inside the activity groove (604), a torsion spring (606) is installed through sleeving, and the torsion spring (606) is connected to the fixed rod (603) and the activity groove (604). At the lower end of the rod body of the fixed rod (603) inside the activity groove (604), a limit disk (605) is installed. The limit disk (605) is snap - fitted inside the lower end of the activity groove (604).

6. The universal testing machine with an anti-offset mechanism according to claim 3, characterized in that: At the lower ends of the racks (609), a guide block (607) is installed respectively. At both ends of the lower surface inside the groove (601), a guide groove (608) is provided respectively. The guide blocks (607) are snap - fitted inside the guide grooves (608) respectively. At the mutually - remote ends of the racks (609), a connecting plate (610) is installed respectively, and the connecting plates (610) are located on the front and back sides of the moving frame (4) respectively. At the upper ends of the connecting plates (610), a clamping frame (612) is installed respectively. The clamping frames (612) are located between the clamping plates (5). On the front surface of the front connecting plate (610), a handle (611) is installed.

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