Fastener strength detection device

Abstract

The utility model discloses a fastener strength detection device which comprises a rack main body, a cylinder seat, two guide rods, a hydraulic cylinder, a right carrier plate, a left carrier plate, a U-shaped frame, a left limiting tool, a right limiting tool, a limiting ring, a T-shaped threaded sleeve and a fastener, the cylinder seat is fixedly installed on the rack main body, the two guide rods are parallel and are fixedly installed on the rack main body, and the hydraulic cylinder is fixedly installed on the rack main body. The left carrier plate is slidably mounted on the guide rods in a sleeving mode, and the two ends of the right carrier plate are fixedly mounted on the rack body. Compared with a tension tester, the device has the advantages of low use cost, small space occupancy rate and convenience in position movement, and can meet the use requirements of tensile strength detection of fasteners with diameters of 10mm and below, the right carrier plate and the rack main body are welded and fixed after being spliced, and the stay bolt increases the structural strength of the middle position of the right carrier plate, so that the tensile strength of the fasteners is improved. The right carrier plate cannot be bent and deformed during stretching detection, and the structural strength of the middle position of the left carrier plate can be improved through the U-shaped frame.

Description

Technical Field

[0001] This utility model belongs to the field of fastener technology, and in particular relates to a fastener strength testing device. Background Technology

[0002] Currently, commonly used fasteners, such as bolts, require strength testing during their production to determine if they meet standards. Tensile strength testing is one such indicator. Current tensile strength testing utilizes tensile testing machines, which are large, versatile, and capable of testing various sizes and types of fasteners. However, these machines are costly, require a large footprint, and are difficult to reposition. Furthermore, testing the tensile strength of fasteners with a diameter of 10mm or less presents energy waste issues. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a device with low manufacturing cost, small space occupation, and suitable for testing the tensile strength of fasteners with a diameter of 10mm and below.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a fastener strength testing device, comprising a frame body, a cylinder seat, guide rods, a hydraulic cylinder, a right carrier plate, a left carrier plate, a U-shaped frame, a left limit fixture, a right limit fixture, a limit ring, a T-shaped threaded sleeve, and fasteners. The cylinder seat is fixedly installed on the frame body. The front and rear ends of the hydraulic cylinder body are respectively fixedly installed on the cylinder seat and the frame body. Two guide rods are parallel and fixedly installed on the frame body. The left carrier plate is slidably sleeved on the guide rods. The two ends of the right carrier plate are fixedly installed on the frame body, and the right carrier plate is also fixedly sleeved on the guide rods. The right end of the U-shaped frame is fixedly installed on the left carrier plate. On the plate, a pull plate is fixedly installed on the piston rod of the hydraulic cylinder. The piston rod of the hydraulic cylinder is slidably installed in the pull plate. The U-shaped frame can be pulled to the left by the pull plate. A pressure sensor is fixedly installed on the left end face of the pull plate. A first limit plate is fixedly installed on the left end face of the left limit fixture. A second limit plate is fixedly installed on the right end face of the right limit fixture. The left limit fixture and the right limit fixture are respectively provided with a first anti-detachment receiving groove and a second anti-detachment receiving groove. The left limit fixture and the right limit fixture are slidably inserted into the left carrier plate and the right carrier plate respectively. The limit ring is slidably sleeved on the head of the fastener. The T-shaped threaded sleeve is screwed and fixedly installed on the bottom of the fastener.

[0005] Preferably, slots are provided on the front and rear sides of the frame body, and the two ends of the right carrier plate are installed in the slots. The two ends of the right carrier plate are welded and fixed to the frame body.

[0006] Preferably, the right carrier plate is also fixedly connected to the right end of the frame body by tie rod bolts and lock nuts. A support sleeve is sleeved on the tie rod bolt, and the left and right ends of the support sleeve press against the right carrier plate and the frame body, respectively.

[0007] Preferably, the cylinder seat is also fixedly mounted on the guide rod.

[0008] Preferably, a first limiting bolt for pressing and fixing the left limiting fixture is screwed onto the left carrier plate, and a second limiting bolt for pressing and fixing the right limiting fixture is screwed onto the right carrier plate.

[0009] Preferably, a reinforcing sleeve is also screwed onto the fastener, and when the T-screw is tightened, it presses against the reinforcing sleeve.

[0010] Preferably, a push plate is fixedly sleeved on the piston rod of the hydraulic cylinder.

[0011] Compared with the prior art, the advantages of this utility model are: this device has the advantages of low operating cost, small space occupation and easy relocation compared with tensile testing machine, and can meet the use requirements of tensile strength testing of fasteners with diameter of 10mm and below. The right carrier plate is welded and fixed after being inserted into the main body of the frame, and the tie rod bolt increases the structural strength of the middle position of the right carrier plate, so that the right carrier plate will not bend and deform during tensile testing. The U-shaped frame can increase the structural strength of the middle position of the left carrier plate. The left limit fixture and the right limit fixture form a T-shaped structure with the first limit plate and the second limit plate respectively, so that the two can be slidably installed in the left carrier plate and the right carrier plate respectively, which has the advantage of easy disassembly and replacement. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a top view of the present invention.

[0014] Figure 2 yes Figure 1 A magnified structural diagram at point M.

[0015] Figure 3 This is a schematic diagram of the installation structure of the limit ring, T-screw sleeve and fasteners. Detailed Implementation

[0016] The present invention will now be described in detail with reference to specific embodiments:

[0017] like Figures 1 to 3The fastener strength testing device shown includes a frame body 1, a cylinder seat 11, guide rods 2, a hydraulic cylinder 3, a right carrier plate 4, a left carrier plate 5, a U-shaped frame 51, a left limiting fixture 6, a right limiting fixture 7, a limiting ring 8, a T-shaped threaded sleeve 9, and fasteners 10. The cylinder seat 11 is fixedly mounted on the frame body 1. The front and rear ends of the hydraulic cylinder 3 are respectively fixedly mounted on the cylinder seat 11 and the frame body 1. Two guide rods 2 are parallel and fixedly mounted on the frame body 1. The left carrier plate 5 is slidably sleeved on the guide rods 2. The two ends of the right carrier plate 4 are fixedly mounted on the frame body 1, and the right carrier plate 4 is also fixedly sleeved on the guide rods 2. The right end of the U-shaped frame 51 is fixedly mounted on the left carrier plate 5. The piston of the hydraulic cylinder 3... A pull plate 31 is fixedly installed on the rod. The piston rod of the hydraulic cylinder 3 is slidably installed inside the pull plate 31. The pull plate 31 can pull the U-shaped frame 51 to the left. A pressure sensor is fixedly installed on the left end face of the pull plate 31. A first limiting plate 61 is fixedly installed on the left end face of the left limiting fixture 6, and a second limiting plate 71 is fixedly installed on the right end face of the right limiting fixture 7. The left limiting fixture 6 and the right limiting fixture 7 are respectively provided with a first anti-detachment receiving groove 62 and a second anti-detachment receiving groove 72. The left limiting fixture 6 and the right limiting fixture 7 are slidably inserted into the left carrier plate 5 and the right carrier plate 4, respectively. The limiting ring 8 is slidably sleeved on the head of the fastener 10, and the T-shaped screw sleeve 9 is screwed and fixedly installed on the bottom of the fastener 10. The pressure sensor is connected to the control computer through a circuit. A protective cover is also hinged on the frame body 1 to improve the safety of the detection process.

[0018] The frame body 1 has slots on both the front and rear sides. The two ends of the right carrier plate 4 are installed in the slots. The two ends of the right carrier plate 4 are welded and fixed to the frame body 1. Installing the right carrier plate 4 in the slots can increase the weld length between the two ends of the right carrier plate 4 and the frame body 1, and improve the installation structure strength between the two ends of the right carrier plate 4 and the frame body 1.

[0019] The right carrier plate 4 is also fixedly connected to the right end of the frame body 1 by tie rod bolts 41 and lock nuts. A support sleeve 42 is sleeved on the tie rod bolt 41. The left and right ends of the support sleeve 42 press against the right carrier plate 4 and the frame body 1 respectively. The tie rod bolt 41 tightens and fixes the two sides of the middle part of the right carrier plate 4, thereby improving the tensile and bending strength of the right carrier plate 4. The support sleeve 42 can prevent the right carrier plate 4 from being bent and deformed after the tie rod bolt 41 is locked with the lock nut.

[0020] The cylinder seat 11 is also fixedly sleeved on the guide rod 2. The guide rod 2 can provide support for the cylinder seat 11 and prevent the cylinder seat 11 from bending due to excessive length.

[0021] The left carrier plate 5 is screwed with a first limiting bolt 63 for pressing and fixing the left limiting fixture 6, and the right carrier plate 4 is screwed with a second limiting bolt 73 for pressing and fixing the right limiting fixture 7, so as to realize the installation and fixing of the left carrier plate 5 and the right carrier plate 4.

[0022] A reinforcing sleeve 91 is also screwed onto the fastener 10. Tightening the T-screw 9 compresses the reinforcing sleeve 91 into contact. Both the reinforcing sleeve 91 and the T-screw 9 provide reinforcement. If the fastener 10 is pulled apart during testing, it will not break from the inside of the reinforcing sleeve 91 or the T-screw 9. The reinforcing sleeve 91 on the broken fastener 10 can be rotated off to expose a clampable part. The end of the fastener 10 can be easily separated from the T-screw 9 by clamping it with a vise.

[0023] A push plate 32 is fixedly sleeved on the piston rod of the hydraulic cylinder 3, which can push the U-shaped frame 51 to move to the right.

[0024] During testing, the limiting ring 8 is slidably sleeved and installed on the head of the fastener 10, and the T-shaped threaded sleeve 9 is screwed and fixedly installed on the bottom of the fastener 10. The heads of the limiting ring 8 and the T-shaped threaded sleeve 9 are slidably embedded in the first anti-detachment receiving groove 62 and the second anti-detachment receiving groove 72, respectively. The piston rod of the control hydraulic cylinder 3 retracts to the left, and the piston rod pulls the combination of the U-shaped frame 51, the left carrier plate 5, and the left limiting fixture 6 to the right through the pull plate 31. The pull plate 31 squeezes the pressure sensor and the U-shaped frame 51, so that the pressure sensor generates a pressure value and transmits it to the control computer. The pressure value generated by the pressure sensor is the tensile test value of the fastener. Under the limiting action of the first anti-detachment receiving groove 62 and the second anti-detachment receiving groove 72, the tensile strength of the fastener 10 is tested at a preset value.

Claims

1. A fastener strength testing device, characterized in that: The system includes a frame body (1), a cylinder seat (11), guide rods (2), a hydraulic cylinder (3), a right carrier plate (4), a left carrier plate (5), a U-shaped frame (51), a left limiting fixture (6), a right limiting fixture (7), a limiting ring (8), a T-shaped threaded sleeve (9), and fasteners (10). The cylinder seat (11) is fixedly installed on the frame body (1). The front and rear ends of the hydraulic cylinder (3) are fixedly installed on the cylinder seat (11) and the frame body (1), respectively. Two guide rods (2) are parallel and fixedly installed on the frame body (1). The left carrier plate (5) is slidably sleeved on the guide rods (2). The two ends of the right carrier plate (4) are fixedly installed on the frame body (1). The right carrier plate (4) is also fixedly sleeved on the guide rods (2). The right end of the U-shaped frame (51) is fixedly installed on the left carrier plate (5). The piston rod of the hydraulic cylinder (3) is fixedly sleeved on the left carrier plate (5). A pull plate (31) is fixedly installed. The piston rod of the hydraulic cylinder (3) is slidably installed in the pull plate (31). The U-shaped frame (51) can be pulled to the left by the pull plate (31). A pressure sensor is fixedly installed on the left end face of the pull plate (31). A first limit plate (61) is fixedly installed on the left end face of the left limit fixture (6). A second limit plate (71) is fixedly installed on the right end face of the right limit fixture (7). The left limit fixture (6) and the right limit fixture (7) are respectively provided with a first anti-detachment accommodating groove (62) and a second anti-detachment accommodating groove (72). The left limit fixture (6) and the right limit fixture (7) are slidably inserted into the left carrier plate (5) and the right carrier plate (4) respectively. The limit ring (8) is slidably sleeved on the head of the fastener (10). The T-shaped screw sleeve (9) is screwed and fixedly installed on the bottom of the fastener (10).

2. The fastener strength testing device according to claim 1, characterized in that: The frame body (1) has slots on both the front and rear sides. The two ends of the right carrier plate (4) are installed in the slots and the two ends of the right carrier plate (4) are welded and fixed to the frame body (1).

3. The fastener strength testing device according to claim 1, characterized in that: The right carrier plate (4) is also fixedly connected to the right end of the frame body (1) by tie rod bolts (41) and lock nuts. A support sleeve (42) is sleeved on the tie rod bolts (41), and the left and right ends of the support sleeve (42) press against the right carrier plate (4) and the frame body (1) respectively.

4. The fastener strength testing device according to claim 1, characterized in that: The cylinder seat (11) is also fixedly sleeved on the guide rod (2).

5. The fastener strength testing device according to claim 1, characterized in that: The left carrier plate (5) is screwed with a first limiting bolt (63) for pressing and fixing the left limiting fixture (6), and the right carrier plate (4) is screwed with a second limiting bolt (73) for pressing and fixing the right limiting fixture (7).

6. The fastener strength testing device according to claim 1, characterized in that: A reinforcing sleeve (91) is also screwed onto the fastener (10), and when the T-shaped sleeve (9) is tightened, it presses against the reinforcing sleeve (91).

7. The fastener strength testing device according to claim 1, characterized in that: A push plate (32) is fixedly sleeved on the piston rod of the hydraulic cylinder (3).

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