A new type of bolt combination tensile fixture

Abstract

The present invention discloses a novel bolt combination tensile clamp, comprising a first pull rod, a first fixed block, a threaded rod, a bolt hole and a fixed groove, wherein the first pull rod is connected to a first fixed block, the first fixed block is connected to a threaded rod, the threaded rod is connected to a second fixed block, the second fixed block is connected to a second pull rod, a rotating rod is provided on the first fixed block, and a receiving groove is provided on the first fixed block, a limiting hole is provided on the receiving groove, and a rotating disk is fixed on the rotating rod. The novel bolt combination tensile clamp is provided with a rotatable rotating disk, and the rotating disk is provided with fixed grooves with different inner diameters. By rotating the rotating disk, different fixed grooves can be conveniently placed on the limiting holes, thereby improving the use range of the device, and also enabling the fixed grooves to better fit with the bolt rod to be tested, thereby reducing the horizontal displacement of the bolt, improving the stability of the clamp, and improving the accuracy of tensile test measurement.

Description

Technical Field

[0001] The invention relates to the technical field of stretching clamps, in particular to a novel bolt-combined stretching clamp. Background Art

[0002] Tensile test refers to the test method for determining the properties of materials under axial tensile load, also known as tensile test. It is one of the basic methods for testing the mechanical properties of materials. It is mainly used to check whether the materials meet the specified standards and study the performance of materials. The data obtained from the tensile test can be used to determine the elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile performance indicators of the material. Creep data can be obtained from tensile tests conducted at high temperatures. Before using the combination bolt, it is necessary to undergo a tensile test to measure its axial tensile load to determine whether the performance of the combination bolt product is qualified. When the combination bolt is subjected to a tensile test, a bolt combination tensile fixture is required. The tensile fixture itself is a locking mechanism. There is no fixed pattern in structure. According to different specimens and test force sizes, the structure is very different. The existing bolt combination tensile fixture: the fixture mostly adopts a fixed structure, so that a fixture can only be applied to a bolt combination of a specific size, which reduces the scope of application of the tensile fixture. The tensile fixture is divided into two parts, the upper and lower parts. It is easy to mix fixtures of different sizes together during storage, affecting the next use of the fixture.

[0003] Therefore, we proposed a new type of bolt combination tensile clamp to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a new bolt combination stretching clamp to solve the problem raised by the above background technology that most clamps on the market currently adopt a fixed structure, so that a clamp can only be used for bolt combinations of specific sizes, which reduces the application scope of the stretching clamp. In addition, the stretching clamp is divided into two parts, the upper and lower parts, and it is easy to mix clamps of different sizes together during storage, affecting the next use of the clamp.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a new type of bolt combination stretching clamp, comprising a first pull rod, a first fixed block, a threaded rod, a bolt hole and a fixed groove, the first pull rod is connected to the first fixed block, the first fixed block is connected to the threaded rod, the threaded rod is connected to the second fixed block, the second fixed block is connected to the second pull rod, the first fixed block is provided with a rotating rod, and the first fixed block is provided with a receiving groove, the receiving groove is provided with a limiting hole, a rotating disk is fixed on the rotating rod, the limiting hole is provided with a first lifting groove, the first fixed block is provided with a second lifting groove, the second lifting groove is connected with a spring, the spring is connected with a limiting disk, a limiting rod is provided below the limiting disk, and the limiting groove is provided on the limiting disk, the limiting hole is provided with a bolt hole, and the rotating disk is provided with a fixing groove.

[0006] Preferably, the center of the circle where the first pull rod is located and the center of the circle where the bolt hole is located are on the same vertical line, and the center of the circle where the bolt hole is located and the center of the circle where the limit hole is located are on the same vertical line.

[0007] Preferably, the first fixing block and the second fixing block have the same size, and the first fixing block is a rotating structure on the second fixing block through a threaded rod, and the threaded rod is located at the center of the second fixing block.

[0008] Preferably, the rotating rod is a telescopic structure on the first fixed block through a spring, the center of the circle where the rotating rod is located is located on the vertical center line of the first fixed block, and the height of the rotating rod is greater than the height of the first fixed block.

[0009] Preferably, there are four limiting grooves distributed on the limiting plate at equal intervals, and the size of the limiting groove corresponds to the size of the limiting rod, and the limiting groove is located directly above the fixing groove.

[0010] Preferably, the horizontal distance from the fixing groove to the rotating rod is equal to the horizontal distance from the bolt hole to the rotating rod, and there are four fixing grooves evenly spaced on the rotating disk, and the four fixing grooves have different sizes.

[0011] Compared with the prior art, the invention has the following beneficial effects: the new bolt combination tensile clamp,

[0012] (1) A rotatable rotating disk is provided, and fixed grooves with different inner diameters are provided on the rotating disk. The different fixed grooves can be conveniently placed on the limiting holes by rotating the rotating disk, thereby increasing the use range of the device, and making the fixed grooves better fit the bolt rod to be tested, thereby reducing the horizontal displacement of the bolt, improving the stability of the clamp, and improving the accuracy of the tensile test measurement;

[0013] (2) A threaded rod is provided to fix the first fixing block and the second fixing block together, thereby preventing the first fixing block and the second fixing block from being separated during storage, making it easier to store and transport. The first fixing block and the second fixing block have the same size, thereby reducing the sharp edges between the first fixing block and the second fixing block when they are fitted together, thereby reducing the danger of transporting the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0016] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 4 It is a schematic diagram of the top view of the limit plate of the present invention;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the bolt hole of the present invention;

[0019] Figure 6 It is a schematic diagram of the top view of the rotating disk of the present invention.

[0020] In the figure: 1. first pull rod; 2. first fixed block; 3. threaded rod; 4. second fixed block; 5. second pull rod; 6. rotating rod; 7. insertion slot; 8. limiting hole; 9. rotating disk; 10. first lifting slot; 11. second lifting slot; 12. spring; 13. limiting disk; 14. limiting rod; 15. limiting slot; 16. bolt hole; 17. fixing slot. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-6The present invention provides a technical solution: a novel bolt combination tensile clamp, comprising a first pull rod 1, a first fixed block 2, a threaded rod 3, a second fixed block 4, a second pull rod 5, a rotating rod 6, a placement slot 7, a limiting hole 8, a rotating disk 9, a first lifting slot 10, a second lifting slot 11, a spring 12, a limiting disk 13, a limiting rod 14, a limiting slot 15, a bolt hole 16 and a fixed slot 17, the first pull rod 1 is connected to the first fixed block 2, the first fixed block 2 is connected to the threaded rod 3, the threaded rod 3 is connected to the second fixed block 4, the second fixed block 4 is connected to the second pull rod 5, the first fixed block 2 is provided with a rotating rod 6, and the first fixed block 2 is provided with a placement slot 7, the placement slot 7 is provided with a limiting hole 8, the rotating disk 9 is fixed to the rotating rod 6, the limiting hole 8 is provided with a first lifting slot 10, the first fixed block 2 A second lifting groove 11 is opened on the upper surface, a spring 12 is connected to the second lifting groove 11, a limiting plate 13 is connected to the spring 12, a limiting rod 14 is arranged below the limiting plate 13, a limiting groove 15 is opened on the limiting plate 13, a bolt hole 16 is opened on the limiting hole 8, and a fixing groove 17 is opened on the rotating plate 9.

[0023] The center of the circle where the first pull rod 1 is located is on the same vertical line as the center of the circle where the bolt hole 16 is located, and the center of the circle where the bolt hole 16 is located is on the same vertical line as the center of the circle where the limit hole 8 is located, so that the center of the bolt assembly and the center of the first pull rod 1 are on the same vertical line.

[0024] The first fixing block 2 and the second fixing block 4 have the same size, and the first fixing block 2 is a rotating structure on the second fixing block 4 through the threaded rod 3, and the threaded rod 3 is located at the center of the second fixing block 4, which is convenient for fixing the first fixing block 2 on the second fixing block 4.

[0025] The rotating rod 6 is a telescopic structure on the first fixed block 2 through the spring 12, and the center of the circle where the rotating rod 6 is located is located on the vertical center line of the first fixed block 2, and the height of the rotating rod 6 is greater than the height of the first fixed block 2, which is convenient for fixing the rotating disk 9 through the rotating rod 6.

[0026] There are four limiting grooves 15 evenly spaced on the limiting plate 13 , and the size of the limiting grooves 15 corresponds to the size of the limiting rod 14 , and the limiting grooves 15 are located directly above the fixing grooves 17 , so as to accurately position the fixing grooves 17 in the limiting holes 8 .

[0027] The horizontal distance from the fixing groove 17 to the rotating rod 6 is equal to the horizontal distance from the bolt hole 16 to the rotating rod 6, and there are four fixing grooves 17 evenly distributed on the rotating disk 9, and the four fixing grooves 17 have different sizes, so that the fixing grooves 17 can better fit the bolt combination.

[0028] Working principle: When using the new bolt combination stretching clamp, first take out the clamp, pull up the rotating rod 6 on the first fixed block 2, the rotating rod 6 drives the limit plate 13 and the rotating disk 9 to move upward at the same time, the limit plate 13 compresses the spring 12 to rise and drives the limit groove 15 to leave the limit rod 14, and then rotate the rotating rod 6, the rotating rod 6 drives the limit plate 13 and the rotating disk 9 to rotate at the same time, so that the fixed groove 17 of the appropriate size on the rotating disk 9 is located in the limit hole 8, and the limit groove 15 is located directly above the limit rod 14, loosen the rotating rod 6, the spring 12 pushes the limit plate 13 down, and the limit plate 13 makes the limit groove 15 engage with the limit rod 14, and similarly adjust the size of the fixed groove 17 in the upper limit hole 8 of the second fixed block 4, so that the second fixed block 4 is rotated on the first fixed block 2 through the threaded rod 3, and the first fixed block 2 and the second fixed block 4 are moved. Separate the first pull rod 1 and the second pull rod 5, respectively clamp them in the upper and lower jaws of the testing machine, and adjust the first fixing block 2 and the second fixing block 4 to a suitable distance to adapt to the length of the bolt to be tested by moving the crossbeam of the testing machine.

[0029] The bolt combination to be tested is passed through the slot 7, the upper and lower ends of the bolt combination are placed in the limit holes 8, the bolt rod is fitted with the fixing slot 17, and the testing machine is started to perform a tensile test on the bolt combination. After the test is completed, the clamp is removed, the first fixing block 2 and the second fixing block 4 are fixed together by the threaded rod 3, and the clamp is stored. The use of this clamp is completed, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel bolt combination tensioning fixture, comprising a first pull rod (1), a first fixing block (2), a threaded rod (3), a bolt hole (16) and a fixing groove (17), characterized in that: The first pull rod (1) is connected to a first fixed block (2), the first fixed block (2) is connected to a threaded rod (3), the threaded rod (3) is connected to a second fixed block (4), the second fixed block (4) is connected to a second pull rod (5), the first fixed block (2) is provided with a rotating rod (6), and the first fixed block (2) is provided with a receiving groove (7), the receiving groove (7) is provided with a limiting hole (8), the rotating rod (6) is fixed with a rotating disk (9), the The limiting hole (8) is provided with a first lifting groove (10), the first fixed block (2) is provided with a second lifting groove (11), the second lifting groove (11) is connected with a spring (12), the spring (12) is connected with a limiting plate (13), a limiting rod (14) is arranged below the limiting plate (13), and the limiting plate (13) is provided with a limiting groove (15), the limiting hole (8) is provided with a bolt hole (16), and the rotating plate (9) is provided with a fixing groove (17); The horizontal distance between the fixing groove (17) and the rotating rod (6) is equal to the horizontal distance between the bolt hole (16) and the rotating rod (6), and there are four fixing grooves (17) distributed at equal intervals on the rotating disk (9), and the four fixing grooves (17) have different sizes; When the tensile clamp is used for a tensile test, the rotating rod (6) is rotated, and the rotating rod (6) drives the limit plate (13) and the rotating plate (9) to rotate simultaneously, so that a fixing groove (17) of a suitable size on the rotating plate (9) is located in the limiting hole (8), and at the same time, the limiting groove (15) is located directly above the limiting rod (14). The rotating rod (6) is released, and the spring (12) pushes the limiting plate (13) to descend, and the limiting plate (13) causes the limiting groove (15) to engage with the limiting rod (14). Similarly, the size of the fixing groove (17) in the upper limit hole (8) of the second fixing block (4) is adjusted, and the bolt assembly to be tested is passed through the slot (7), so that the upper and lower ends of the bolt assembly are placed in the limiting hole (8), and the bolt rod is fitted with the fixing groove (17). The testing machine is started to perform a tensile test on the bolt assembly.

2. According to claim 1, the novel bolt combination tensioning fixture is characterized by: The center of the circle where the first pull rod (1) is located is on the same vertical line as the center of the circle where the bolt hole (16) is located, and the center of the circle where the bolt hole (16) is located is on the same vertical line as the center of the circle where the limit hole (8) is located.

3. A new type of bolt combination tensioning fixture according to claim 1, characterized in that The first fixing block (2) and the second fixing block (4) have the same size, and the first fixing block (2) is a rotating structure on the second fixing block (4) via a threaded rod (3), and the threaded rod (3) is located at the center of the second fixing block (4).

4. The novel bolt combination tensioning fixture according to claim 1 is characterized in that: The rotating rod (6) is a telescopic structure on the first fixed block (2) via a spring (12), the center of the circle where the rotating rod (6) is located is located on the vertical center line of the first fixed block (2), and the height of the rotating rod (6) is greater than the height of the first fixed block (2).

5. The novel bolt combination tensioning fixture according to claim 1 is characterized in that: Four limiting grooves (15) are evenly spaced on the limiting plate (13), and the size of the limiting grooves (15) corresponds to the size of the limiting rod (14), and the limiting grooves (15) are located directly above the fixing grooves (17).

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