Fastener tension testing device

Abstract

The utility model discloses a fastener tension testing device which comprises a tension testing machine, the middle part of a movable cross beam of the tension testing machine is rotatably connected with a first bearing column, the top of the first bearing column is provided with a first electric clamping device, and the bottom of the first bearing column is provided with a fixed sleeve; a first insertion hole is formed in the end, close to the first electric clamp holder, of the first bearing column, a second insertion hole is formed in the end, close to the fixed sleeve, of the first bearing column, two positioning plates are fixedly connected to the top of a movable cross beam of the tension tester, and the two positioning plates are arranged on the two sides of the first bearing column respectively. According to the utility model, the rotatable first bearing column is arranged on the movable cross beam of the tensile testing machine, and the first electric clamp holder and the fixed sleeve are respectively arranged at the two ends of the first bearing column, so that switching can be carried out between the first electric clamp holder and the fixed sleeve, and the tensile test can be carried out on a fastener; and an actual use scene can be simulated to test the fastener.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener performance detection, in particular to a fastener tension testing device. Background Art

[0002] Fasteners are a type of mechanical parts used for fastening and connection and are extremely widely used. Fasteners are widely used in industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc. Various fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, instruments and supplies. They are the most widely used mechanical basic parts. Fasteners are a vital component of various mechanical equipment and engineering structures. Their quality and reliability directly affect the safety and stability of the entire system. Therefore, the detection of fasteners has become an important link to ensure the safety and reliability of the project. First of all, the mechanical properties of fasteners are one of the key detection indicators. By testing the tensile, compressive, bending and other mechanical properties of fasteners, their load-bearing capacity and service life can be evaluated to ensure their safety and reliability in the project.

[0003] Some existing tensile testing devices can only measure the tensile force value when breaking the fastener when in use, and cannot simulate the actual use scenario of the fastener, and cannot measure the tensile force that the fastener can withstand when in use.

[0004] For example, a tensile test device for automobile fasteners disclosed in the publication number CN213022083U, by providing an upper locking mechanism, makes it easy to install and remove the bolts before and after the test, avoiding the problem of difficulty in removing the bolts after they are broken. The design of the lower locking mechanism enables the lower end of the bolt to be stably fixed during the tensile test, preventing the bolt from slipping and causing accidents. At the same time, the movable locking block facilitates the removal of the lower end of the broken bolt.

[0005] This patent fixes the two ends of the bolt through an upper locking mechanism and a lower locking mechanism, and can only measure the tension value on a single level. It cannot simulate the actual use scenario of the bolt and cannot measure the tension that the bolt can withstand when in use.

[0006] Therefore, it is necessary to invent a fastener tension testing device to solve the above problems. Utility Model Content

[0007] The utility model aims to provide a fastener tension testing device to solve the above-mentioned technical problems.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fastener tension testing device, including a tension testing machine, a movable crossbeam of the tension testing machine is rotatably connected to a No. 1 load-bearing column in the middle part, a No. 1 electric clamp is installed on the top of the No. 1 load-bearing column, a fixed sleeve is installed on the bottom of the No. 1 load-bearing column, a No. 1 socket is provided at one end of the No. 1 load-bearing column close to the No. 1 electric clamp, a No. 2 socket is provided at one end of the No. 1 load-bearing column close to the fixed sleeve, two positioning plates are fixedly connected to the top of the movable crossbeam of the tension testing machine, the two positioning plates are respectively arranged on both sides of the No. 1 load-bearing column, a No. 3 socket is provided on the surface of the two positioning plates, a positioning pin is penetrated between the two positioning plates, and the No. 1 socket, the No. 2 socket and the No. 3 socket are all matched with the positioning pin.

[0009] By rotating the No. 1 carrier column, you can switch between the No. 1 electric gripper and the fixed sleeve.

[0010] Preferably, a No. 2 bearing column is fixedly connected to the bottom of the fixed crossbeam of the tensile testing machine, the No. 2 bearing column is arranged directly above the No. 1 bearing column, and a No. 2 electric clamp is installed at the bottom of the No. 2 bearing column.

[0011] The two ends of the fastener can be clamped and stretched by the No. 1 electric clamp and the No. 2 electric clamp.

[0012] Preferably, a control panel is installed on one side of the tensile testing machine, and the tensile testing machine, the first electric clamp and the second electric clamp are all electrically connected to the control panel.

[0013] The tensile testing machine, No. 1 electric clamp and No. 2 electric clamp are regulated respectively through the control panel.

[0014] Preferably, an inner thread is provided on the inner wall of the fixing sleeve, and a reinforcing rib is welded on the outer side of the fixing sleeve at a connection point close to the No. 1 bearing column.

[0015] Threading one end of the fastener to the fixed sleeve can simulate the scenario of actual use.

[0016] Preferably, the No. 1 socket and the No. 2 socket are symmetrically distributed about the No. 1 bearing column, and the cross-sectional shapes of the No. 1 socket, the No. 2 socket and the No. 3 socket are all square.

[0017] After the No. 1 bearing column is rotated 180 degrees, the No. 1 socket and the No. 2 socket can be swapped.

[0018] Preferably, the cross-sectional shape of the positioning pin is also square, and a handle is fixedly connected to one end of the positioning pin.

[0019] The square structural design can prevent the positioning pin from sliding, and the positioning pin can be easily pushed and pulled through the handle.

[0020] Preferably, an anti-collision pad is installed on the base table of the tensile testing machine, and the anti-collision pad is arranged directly below the No. 1 load-bearing column.

[0021] The setting of the anti-collision pad can prevent the No. 1 load-bearing column from colliding with the base table of the tensile testing machine due to accidental operation.

[0022] Preferably, the anti-collision pad is made of rubber material, and the shape of the anti-collision pad is rectangular.

[0023] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0024] By setting a rotatable No. 1 load-bearing column on the moving crossbeam of the tensile testing machine, and installing a No. 1 electric clamp and a fixed sleeve at both ends of the No. 1 load-bearing column, it is possible to switch between the No. 1 electric clamp and the fixed sleeve, so that the fasteners can be tested by breaking and by simulating actual usage scenarios to test the fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a schematic diagram of the overall structure of the utility model when performing a pull-off test;

[0027] Figure 3 It is a schematic diagram of the overall structure of the utility model when simulating actual scene testing;

[0028] Figure 4 It is an exploded view of the local structure of the utility model;

[0029] Figure 5 It is a structural schematic diagram of a No. 1 bearing column, a No. 1 electric clamp and a fixing sleeve of the utility model.

[0030] Description of reference numerals:

[0031] 1. Tensile testing machine; 2. No. 1 load-bearing column; 3. No. 1 electric clamp; 4. Fixed sleeve; 5. No. 1 socket; 6. No. 2 socket; 7. Positioning plate; 8. No. 3 socket; 9. Positioning pin; 10. No. 2 load-bearing column; 11. No. 2 electric clamp; 12. Control panel; 13. Anti-collision pad. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] The utility model provides Figure 1-5 A fastener tension testing device shown in the figure includes a tension testing machine 1, a No. 1 bearing column 2 is rotatably connected to the middle part of the movable crossbeam of the tension testing machine 1, a No. 1 bearing column 2 is installed on the top of the No. 1 bearing column 2, a No. 1 electric clamper 3 is installed at the bottom of the No. 1 bearing column 2, a No. 1 socket 5 is provided at the end of the No. 1 bearing column 2 close to the No. 1 electric clamper 3, and a No. 2 socket 6 is provided at the end of the No. 1 bearing column 2 close to the fixed sleeve 4. Two positioning plates 7 are fixedly connected to the top of the movable crossbeam of the tension testing machine 1, and the two positioning plates 7 are respectively arranged on both sides of the No. 1 bearing column 2. A No. 3 socket 8 is provided on the surface of the two positioning plates 7, and a positioning pin 9 is penetrated between the two positioning plates 7, and the No. 1 socket 5, the No. 2 socket 6 and the No. 3 socket 8 are all matched with the positioning pin 9.

[0034] In one aspect of the present embodiment, a second bearing column 10 is fixedly connected to the bottom of the fixed crossbeam of the tensile testing machine 1, and the second bearing column 10 is arranged directly above the first bearing column 2. A second electric clamp 11 is installed at the bottom of the second bearing column 10. A control panel 12 is installed on one side of the tensile testing machine 1. The tensile testing machine 1, the first electric clamp 3 and the second electric clamp 11 are all electrically connected to the control panel 12. An internal thread is provided on the inner wall of the fixed sleeve 4, and the outer side of the fixed sleeve 4 is close to the first electric clamp 3. Reinforcing ribs are welded at the connection of the bearing column 2, and the No. 1 socket 5 and the No. 2 socket 6 are symmetrically distributed about the No. 1 bearing column 2. The cross-sectional shapes of the No. 1 socket 5, the No. 2 socket 6 and the No. 3 socket 8 are all square, and the cross-sectional shape of the locating pin 9 is also a square. A handle is fixedly connected to one end of the locating pin 9, and an anti-collision pad 13 is installed on the base table of the tensile testing machine 1. The anti-collision pad 13 is arranged directly below the No. 1 bearing column 2, and the anti-collision pad 13 is made of rubber material, and the shape of the anti-collision pad 13 is rectangular.

[0035] Working principle of this utility model:

[0036] Refer to the instruction manual Figure 1-5 When performing the breaking test, firstly, one end of the fastener is clamped and fixed by the No. 2 electric clamp 11, and then the movable crossbeam is lifted by the tensile testing machine 1, and then the other end of the fastener is clamped and fixed by the No. 1 electric clamp 3, and then the movable crossbeam is driven downward by the tensile testing machine 1, so as to stretch the fastener until the fastener is pulled and broken;

[0037] Refer to the instruction manual Figure 1-5When simulating the actual scene test, first extract the locating pin 9 through the handle, then flip the No. 1 load-bearing column 2 180 degrees, and use the locating pin 9 again to limit the No. 1 load-bearing column 2 so that the fixed sleeve 4 is located at the top, and then one end of the fastener is threadedly connected to the fixed sleeve 4, and then the movable crossbeam is lifted by the tensile testing machine 1, and then the other end of the fastener is clamped and fixed by the No. 2 electric clamp 11, and finally the movable crossbeam is driven downward by the tensile testing machine 1 to stretch the fastener. At this time, the fastener may be pulled apart on the one hand, and on the other hand, it may slip due to the wear of the external thread on the surface of the fastener.

Claims

1. A fastener tensile testing device, comprising a tensile testing machine (1), characterized in that: The middle part of the movable crossbeam of the tensile testing machine (1) is rotatably connected to a No. 1 bearing column (2), a No. 1 electric clamp (3) is installed on the top of the No. 1 bearing column (2), a fixed sleeve (4) is installed on the bottom of the No. 1 bearing column (2), a No. 1 plug hole (5) is provided at one end of the No. 1 bearing column (2) close to the No. 1 electric clamp (3), a No. 2 plug hole (6) is provided at one end of the No. 1 bearing column (2) close to the fixed sleeve (4), and two positioning plates (7) are fixedly connected to the top of the movable crossbeam of the tensile testing machine (1), the two positioning plates (7) are respectively arranged on both sides of the No. 1 bearing column (2), and a No. 3 plug hole (8) is provided on the surface of the two positioning plates (7), and a positioning pin (9) is provided between the two positioning plates (7), and the No. 1 plug hole (5), the No. 2 plug hole (6) and the No. 3 plug hole (8) are all matched with the positioning pin (9).

2. A fastener tensile testing device according to claim 1, characterized in that: A second bearing column (10) is fixedly connected to the bottom of the fixed crossbeam of the tensile testing machine (1), the second bearing column (10) is arranged directly above the first bearing column (2), and a second electric clamp (11) is installed at the bottom of the second bearing column (10).

3. A fastener tensile testing device according to claim 2, characterized in that: A control panel (12) is installed on one side of the tensile testing machine (1), and the tensile testing machine (1), the first electric clamp (3) and the second electric clamp (11) are all electrically connected to the control panel (12).

4. A fastener tensile testing device according to claim 1, characterized in that: The inner wall of the fixing sleeve (4) is provided with an internal thread, and a reinforcing rib is welded on the outer side of the fixing sleeve (4) at a connection point close to the first bearing column (2).

5. A fastener tensile testing device according to claim 1, characterized in that: The first plug hole (5) and the second plug hole (6) are symmetrically distributed with respect to the first bearing column (2); the cross-sectional shapes of the first plug hole (5), the second plug hole (6) and the third plug hole (8) are all square.

6. A fastener tensile testing device according to claim 1, characterized in that: The cross-sectional shape of the positioning pin (9) is also square, and one end of the positioning pin (9) is fixedly connected to a handle.

7. A fastener tensile testing device according to claim 1, characterized in that: An anti-collision pad (13) is installed on the base table of the tensile testing machine (1), and the anti-collision pad (13) is arranged directly below the first bearing column (2).

8. A fastener tensile testing device according to claim 7, characterized in that: The anti-collision pad (13) is made of rubber material and has a rectangular shape.

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