Hot-rolled U-shaped steel sheet pile acute-angle notch accelerated fatigue test sample notch preparation device

Abstract

The utility model discloses a hot-rolled U-shaped steel sheet pile acute-angle notch accelerated fatigue test sample notch preparation device, which belongs to the field of sample preparation devices, and comprises a base, a U-shaped steel sheet pile, a positioning structure and a sample preparation structure, a mold is arranged in the middle of the top of the base, the U-shaped steel sheet pile is arranged at the top of the mold, and the positioning structure is arranged at the top of the base; the positioning structure comprises first hydraulic cylinders, a top seat and adjusting structures, the first hydraulic cylinders are arranged on the periphery of the top of the base, the top seat is arranged on output shafts of the first hydraulic cylinders, movable grooves are formed in the left side and the right side of the front face of the top seat, and the adjusting structures are arranged on the inner sides in the movable grooves. According to the hot-rolled U-shaped steel sheet pile acute-angle notch accelerated fatigue test sample notch sample preparation device, acute-angle notch sample preparation at the intersection of a flange and a web of a three-dimensional U-shaped steel sheet pile is achieved, so that an accelerated fatigue test can be conveniently conducted on the hot-rolled U-shaped steel sheet pile, sample preparation can be conducted on U-shaped steel sheet piles of all specifications and dimensions, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sample preparation device especially relates to hot rolling U type steel sheet pile acute angle notch accelerated fatigue test sample notch sample preparation device. BACKGROUND

[0002] U type steel sheet pile is also called Larsen steel sheet pile, it is used as a new building material, when building bridge cofferdam, large pipeline laying, temporary ditch excavation, it is used as retaining wall, water retaining wall, sand retaining wall, in wharf, unloading yard, it is used as retaining wall, retaining wall, dike protection bank etc., plays an important role in engineering, Larsen steel sheet pile does cofferdam not only green, environmental protection and construction speed is fast, construction cost is low, has good waterproof function, in order to guarantee the performance of U type steel sheet pile, needs to carry out fatigue test to it.

[0003] In order to shorten the experimental period of U type steel sheet pile fatigue test, generally will set up acute angle notch on U type steel sheet pile, the existing metal material physical property detection sample punching preparation equipment, sampling is punched on the plane, it is difficult to realize the acute angle notch sample preparation of the intersection of the flange and the web of the three-dimensional shape hot rolling U type steel sheet pile, so that the hot rolling U type steel sheet pile cannot be subjected to accelerated fatigue test. UTILITY MODEL CONTENTS

[0004] In order to solve the problem that sampling is punched on the plane, it is difficult to realize the acute angle notch sample preparation of the intersection of the flange and the web of the three-dimensional shape hot rolling U type steel sheet pile, the utility model provides hot rolling U type steel sheet pile acute angle notch accelerated fatigue test sample notch sample preparation device, and the technical scheme is as follows:

[0005] The hot rolling U type steel sheet pile acute angle notch accelerated fatigue test sample notch sample preparation device includes a base, a U type steel sheet pile, a positioning structure and a sample preparation structure, a die is arranged at the middle of the top of the base, the U type steel sheet pile is arranged at the top of the die, and the positioning structure is arranged at the top of the base.

[0006] The positioning structure includes a first hydraulic cylinder, an abutment and an adjusting structure, the first hydraulic cylinder is arranged at the periphery of the top of the base, the abutment is arranged on the output shaft of the first hydraulic cylinder, movable grooves are formed in the left and right sides of the front of the abutment, and the adjusting structure is arranged on the inner side in the interior of the movable groove.

[0007] The sample preparation structure includes a moving seat, a second hydraulic cylinder and a rhombic block, the moving seat is arranged at the bottom of the adjusting structure, the second hydraulic cylinder is arranged at the bottom of the moving seat, and the rhombic block is arranged on the output shaft of the second hydraulic cylinder.

[0008] The positioning structure is arranged to facilitate the positioning of the sample preparation structure, and after positioning is completed, the sample preparation structure can conveniently complete the notch sample preparation of the U type steel sheet pile.

[0009] Preferably, the adjusting structure comprises two screw rods arranged inside the two movable grooves respectively, and a movable block arranged on the outer surface of the screw rods.

[0010] Preferably, the screw rods are provided with handles on the opposite sides thereof.

[0011] Preferably, the outer surface of the screw rods arranged inside the movable grooves is provided with threads, and the inner surface of the movable block is provided with a threaded groove connected with the threads.

[0012] Preferably, the inner surface of the top base is provided with two rotating holes with the same size as the screw rods.

[0013] Preferably, the movable block is provided with a clamping groove on the front surface and the back surface thereof, and the movable groove is provided with a sliding rail extending into the clamping groove.

[0014] Preferably, the mold is detachably arranged, and the mold is fixedly connected with the base through the nuts arranged around the top of the mold.

[0015] Preferably, the first hydraulic cylinders are symmetrically arranged, and the four first hydraulic cylinders are simultaneously controlled.

[0016] Preferably, the mold is detachably arranged, and the mold is fixedly connected with the base through the nuts arranged around the top of the mold.

[0017] The sharp corner notch sample of the three-dimensional shape U-shaped steel sheet pile flange and web intersection is realized, so that the accelerated fatigue test of the hot-rolled U-shaped steel sheet pile is facilitated, and the sample of the full specification size U-shaped steel sheet pile can be prepared, and the practicability is high.

[0018] Beneficial effects:

[0019] The beneficial effects of the technical scheme of the utility model are as follows:

[0020] 1. The hot-rolled U-shaped steel sheet pile sharp corner notch accelerated fatigue test sample notch sample device, the positioning structure is convenient for positioning the sample structure, after positioning is completed, the sample structure can conveniently complete the notch sample of the U-shaped steel sheet pile, the mold can be conveniently removed by removing the nut, and a mold corresponding to the size and shape of the U-shaped steel sheet pile is replaced, so that it is suitable for U-shaped steel sheet piles of different sizes and shapes.

[0021] 2. The hot-rolled U-shaped steel sheet pile acute angle notch accelerated fatigue test sample notch making device realizes the making of the acute angle notch at the intersection of the U-shaped steel sheet pile flange and web, thereby facilitating the accelerated fatigue test of the hot-rolled U-shaped steel sheet pile, and can make samples of U-shaped steel sheet piles of all sizes, and has high practicability. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a front view structural schematic diagram of the hot-rolled U-shaped steel sheet pile acute angle notch accelerated fatigue test sample notch making device of the present application;

[0024] Figure 2 is a whole three-dimensional structural schematic diagram of the hot-rolled U-shaped steel sheet pile acute angle notch accelerated fatigue test sample notch making device of the present application;

[0025] Figure 3 is a side view structural schematic diagram of the hot-rolled U-shaped steel sheet pile acute angle notch accelerated fatigue test sample notch making device of the present application.

[0026] In the figure, 1 is a base, 2 is a U-shaped steel sheet pile, 3 is a mold, 4 is a nut, 5 is a first hydraulic cylinder, 6 is a top seat, 7 is a screw rod, 8 is a movable block, 9 is a moving seat, 10 is a second hydraulic cylinder, 11 is a rhombic block, 12 is a groove, 13 is a handle, and 14 is a sliding rail. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0028] As Figure 1As shown, the hot-rolled U-shaped steel sheet pile acute angle notch fatigue test sample notch sampling device includes a base 1, a U-shaped steel sheet pile 2, a positioning structure, and a sampling structure. The middle of the top of the base 1 is provided with a mold 3, and the U-shaped steel sheet pile 2 is arranged on the top of the mold 3. The positioning structure is arranged on the top of the base 1.

[0029] The positioning structure includes a first hydraulic cylinder 5, a top seat 6, and an adjusting structure. The first hydraulic cylinder 5 is arranged around the top of the base 1. The number of the first hydraulic cylinder 5 is four and is symmetrically distributed. The four first hydraulic cylinders 5 are uniformly and simultaneously controlled. The top seat 6 is arranged on the output shaft of the first hydraulic cylinder 5. The left and right sides of the front of the top seat 6 are both provided with a movable groove. The adjusting structure is arranged inside the inner side of the movable groove.

[0030] Specifically, the mold 3 is detachably arranged. The top of the mold 3 is provided with a nut 4 around. The mold 3 is fixedly connected with the base 1 through the nut 4. The mold 3 can be conveniently removed by removing the nut 4, and a mold 3 corresponding in size and shape to the U-shaped steel sheet pile 2 is replaced, so as to be suitable for U-shaped steel sheet piles 2 of different sizes and shapes.

[0031] In this embodiment, the positioning structure can conveniently complete the positioning of the sampling structure.

[0032] As shown in the drawings, Figures 1-2 The sampling structure includes a moving seat 9, a second hydraulic cylinder 10, and a rhombus block 11. The moving seat 9 is arranged at the bottom of the adjusting structure. The second hydraulic cylinder 10 is arranged at the bottom of the moving seat 9. The rhombus block 11 is arranged on the output shaft of the second hydraulic cylinder 10.

[0033] Specifically, the left and right sides of the top of the mold 3 are both provided with a groove 12. The groove 12 corresponds to the position of the rhombus block 11 and has the same inclination angle, so as to avoid damage to the mold 3 during sampling.

[0034] In this embodiment, the sampling structure can conveniently complete the notch sampling of the U-shaped steel sheet pile 2.

[0035] As shown in the drawings, Figures 1-3 The adjusting structure includes a lead screw 7 and a movable block 8. The number of the lead screw 7 is two and is arranged in the interior of the two movable grooves, respectively. The movable block 8 is arranged on the outer surface of the lead screw 7. The moving seat 9 is arranged at the bottom of the movable block 8. The outer surface of the lead screw 7 located in a section of the movable groove is provided with a thread. The interior of the movable block 8 is provided with a thread groove connected with the thread. The left and right sides of the interior of the top seat 6 are both provided with a rotating hole matched in size with the lead screw 7. The lead screw 7 is movably connected with the inner side wall of the movable groove and the rotating hole. The front and back of the movable block 8 are both provided with a clamping groove. The front and back of the movable groove are both provided with a sliding rail 14 extending into the clamping groove.

[0036] Specifically, the opposite ends of the screw rods 7 are both penetrated through and extended to the outside of the top base 6, and the opposite sides of the screw rods 7 are both provided with handles 13, which facilitates the rotation of the screw rods 7.

[0037] In the embodiment, the adjusting structure is used to adjust the positions of the two diamond blocks 11, which facilitates the positioning during the notching sampling.

[0038] The use method of the utility model is as follows:

[0039] The U-shaped steel sheet pile 2 is placed on the mold 3, the positions of the diamond blocks 11 are adjusted through the cooperation of the first hydraulic cylinder 5 and the handle 13, the diamond blocks 11 are made to be in the same straight line with the positions needing sampling on the U-shaped steel sheet pile 2, then the second hydraulic cylinder 10 is started to drive the diamond blocks 11 to penetrate through the U-shaped steel sheet pile 2 and extend to the inside of the recess 12, the notching sampling of the U-shaped steel sheet pile 2 can be completed, the mold 3 can be conveniently taken down through the nut 4, and the mold 3 corresponding to the size and shape of the U-shaped steel sheet pile 2 is replaced, so that it is suitable for U-shaped steel sheet piles 2 of different sizes and shapes.

[0040] The above only describes the preferred embodiments of the utility model and is not used to limit the utility model, and the utility model can have various changes and variations for the person skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A hot-rolled U-shaped steel sheet pile sharp corner notched accelerated fatigue test specimen notching device characterized by comprising: The utility model relates to a kind of steel plate pile sample preparation device, including: Base (1), U-shaped steel sheet pile (2), positioning structure and sample preparation structure, the middle of the top of base (1) is provided with mould (3), U-shaped steel sheet pile (2) is set on the top of mould (3), positioning structure is set on the top of base (1); The positioning structure includes first hydraulic cylinder (5), top seat (6) and adjusting structure, first hydraulic cylinder (5) is set on the top of base (1) around, top seat (6) is set on the output shaft of first hydraulic cylinder (5), the left and right sides of the front of top seat (6) are both provided with movable slot, adjusting structure is set in the inside of movable slot inside; The sample preparation structure includes moving seat (9), second hydraulic cylinder (10) and diamond block (11), moving seat (9) is set on the bottom of adjusting structure, second hydraulic cylinder (10) is set on the bottom of moving seat (9), diamond block (11) is set on the output shaft of second hydraulic cylinder (10).

2. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test according to claim 1, characterized by, The adjusting structure includes lead screw (7) and movable block (8), the number of lead screw (7) is two and is respectively set in the inside of two movable slots, movable block (8) is set on the outer surface of lead screw (7), moving seat (9) is set on the bottom of movable block (8).

3. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test according to claim 2, characterized by The opposite end of lead screw (7) is all penetrated and extended to the outside of top seat (6), and the opposite side of lead screw (7) is all provided with handle (13).

4. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test according to claim 2, characterized by The outer surface of the section of lead screw (7) located in movable slot is provided with thread, and the inside of movable block (8) is provided with thread groove connected with the thread.

5. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test specimen according to claim 4, characterized by, The left and right sides in the inside of top seat (6) are both provided with rotating hole matched with the size of lead screw (7), and lead screw (7) is movably connected with the inner side wall of movable slot and rotating hole.

6. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test according to claim 2, characterized by The front and back of movable block (8) are both provided with clamping groove, and the front and back of movable slot are both provided with sliding rail (14) extending into the inside of clamping groove.

7. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test specimen according to claim 1, characterized by, The mould (3) is detachably arranged, and the top of the mould (3) is provided with a nut (4) around, and the mould (3) is fixedly connected with the base (1) through the nut (4).

8. The notching device for a hot-rolled U-shaped sheet pile sharp corner notched accelerated fatigue test specimen according to Claim 1, characterized by The number of first hydraulic cylinder (5) is four and is symmetrically distributed, and four first hydraulic cylinders (5) are controlled simultaneously.

9. The notching device for preparing a test specimen for a hot-rolled U- shaped sheet pile sharp corner notched fatigue test specimen according to claim 1, characterized by, The left and right sides of the top of mould (3) are both provided with recess (12), and the recess (12) corresponds with the position of diamond block (11) and has same inclination angle.

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