Multipurpose welding seam hydraulic breaking machine

Abstract

The utility model discloses a multipurpose welding seam hydraulic breaking machine, and relates to the field of welding quality inspection. Comprising a movable flat car, a breaking machine frame is fixedly installed on the movable flat car, a welding seam upper pressing head is detachably installed at the top in the breaking machine frame, and a lifting power source and a welding seam lower pressing head are installed at the bottom in the breaking machine frame; the welding seam breaking test piece is placed on the welding seam lower pressing head, the lifting power source drives the welding seam lower pressing head and the welding seam breaking test piece to move towards the welding seam upper pressing head, and the welding seam breaking test piece makes contact with the welding seam upper pressing head and is broken after being continuously pressurized. The whole hydraulic fracture machine for the welding seam is small in size and light in weight, is provided with movable universal wheels, is convenient to move, and can be driven to any occasion where a welding seam fracture test and a flattening test need to be carried out to carry out the welding seam fracture test; the problems that traditional welding seam breaking test equipment is not portable, high in cost, limited in scene and the like can be effectively solved, and an efficient, flexible and economical solution is provided for welding quality detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of welding quality inspection, in particular to a multipurpose welding seam hydraulic breaking machine. BACKGROUND

[0002] At present, the inspection and detection of the internal quality of the welding seam generally adopts flaw detection methods such as rays and ultrasonic waves to evaluate. However, for some special welding seams of certain structures, the detection result is not accurate when the internal quality of the welding seam is detected by rays or ultrasonic waves because of the complex structure. When the rays are detected, the angle of the film and the rays cannot be controlled well, the length of the first transmission is small, the image distortion is too large, and the subsequent evaluation result is inaccurate. When the ultrasonic waves are detected, the probe placement position cannot be controlled well due to the structural reasons, the sound wave propagation path is relatively complex, the judgment of the defects by the detection personnel is difficult, and thus the detection result is inaccurate. Therefore, some welding seam related standards stipulate that the breaking or flattening test needs to be carried out.

[0003] The breaking test of the welding seam is an indispensable means in the welding quality inspection, and is widely applied in the welding skill training, skill competition and welding process evaluation. The traditional breaking or flattening test is generally carried out on a universal material testing machine. However, the universal material testing machine is expensive, and there are not many units that own the universal material testing machine at present. In addition, the use, maintenance and maintenance cost of the universal material testing machine is high, and the universal material testing machine cannot be moved and used. Therefore, when the welding seam breaking test needs to be carried out, it is quite difficult. UTILITY MODEL CONTENTS

[0004] In order to solve the above problems existing in the welding seam breaking test, the utility model provides a multipurpose welding seam hydraulic breaking machine, the whole equipment is small in size and light in weight, and is provided with movable universal wheels, so that the welding seam breaking test can be carried out at any place where the welding seam breaking or flattening test needs to be carried out.

[0005] The utility model adopts the technical scheme that:

[0006] A multipurpose welding seam hydraulic breaking machine, the multipurpose welding seam hydraulic breaking machine comprises a movable flat car, a breaking machine frame is fixedly installed on the movable flat car, a welding seam upper pressing head is detachably installed at the top of the breaking machine frame, a lifting power source and a welding seam lower pressing head are installed at the bottom of the breaking machine frame; a welding seam breaking test piece is placed on the welding seam lower pressing head, the welding seam lower pressing head and the welding seam breaking test piece are driven by the lifting power source to move towards the welding seam upper pressing head, so that the welding seam breaking test piece contacts the welding seam upper pressing head and breaks after continuous pressing.

[0007] Further, the movable flat car comprises a rectangular bottom plate, and edge brake universal casters are installed at the bottom corners of the rectangular bottom plate.

[0008] Further, the frame of the breaking machine is in a rectangular structure as a whole, which comprises a lower crossbeam fixedly connected with a bottom plate, two vertical columns installed on two sides of the lower crossbeam, and an upper crossbeam installed on top of the two vertical columns.

[0009] Further, the upper pressing head of the weld comprises a plate body structure, and a butt joint weld upper pressing head with a blade-shaped bottom and a fillet weld upper pressing head in a T-shaped cross section; the butt joint weld upper pressing head and the fillet weld upper pressing head are both installed on the upper crossbeam of the frame of the breaking machine through bolts.

[0010] Further, the lower pressing head of the weld is a group of strip-shaped rectangular blocks arranged at intervals; the lower pressing head of the weld is installed on a lower pressing head base plate, and is installed on the telescopic rod of the lifting power source through the lower pressing head base plate; the two side edges of the lower pressing head base plate are provided with guide arc-shaped holes matched with the vertical columns.

[0011] Further, the lifting power source is a manual hydraulic jack or an electric hydraulic jack, and the lifting rod of the lifting power source is fixedly connected with the center of the bottom of the lower pressing head base plate.

[0012] The utility model discloses the beneficial effect is:

[0013] Portability and mobility: the overall volume of the multipurpose weld hydraulic breaking machine is small, and the weight is light, the universal trundle with the edge brake is installed at the bottom, and the multipurpose weld hydraulic breaking machine is convenient to move and transport. It can be easily moved to the scene where the weld breaking or flattening test needs to be carried out, solves the problem that the traditional universal material testing machine cannot be used, and greatly expands the application scene of the equipment.

[0014] Multi-purpose adaptability: the multipurpose weld hydraulic breaking machine is provided with interchangeable butt joint weld pressing heads and fillet weld pressing heads, can adapt to different types of weld breaking tests, including butt joint welds, fillet welds and small diameter pipe butt joint welds, and meets the detection needs of various welding processes.

[0015] Efficiency and reliability: the lifting power source of the multipurpose weld hydraulic breaking machine can generate a pressure of about 1000kN, has strong breaking capacity, and can quickly complete the weld breaking test. The multipurpose weld hydraulic breaking machine has reasonable structure design, simple operation and high safety, and can ensure the accuracy and reliability of the test results.

[0016] Flexible power selection: the lifting power source of the multipurpose weld hydraulic breaking machine can adopt an electric hydraulic jack or a manual hydraulic jack as the lifting power source, and the user can select the power mode according to the actual conditions. The use of the manual hydraulic power source enables the equipment to normally operate in the absence of commercial power, further improving the applicability of the equipment.

[0017] Low cost: Compared with traditional universal material testing machines, this multi-purpose hydraulic weld breaking machine has lower manufacturing, usage and maintenance costs, making it suitable for use in small and medium-sized enterprises, welder training institutions and skills competitions, etc., reducing the economic burden of weld quality inspection.

[0018] In summary, this multi-purpose hydraulic weld fracture tester has advantages such as high portability, wide applicability, simple operation, and low cost. It can effectively solve the problems of traditional weld fracture test equipment being inconvenient to carry, costly, and limited in application scenarios, providing an efficient, flexible, and economical solution for welding quality inspection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the multi-purpose hydraulic weld breaker of this utility model;

[0020] Figure 2 This is a schematic diagram of the multi-purpose hydraulic weld breaking machine of this utility model performing a breaking test on a flat butt weld.

[0021] Figure 3 This is a schematic diagram of the fracture test of a diagonal weld using the multi-purpose hydraulic weld breaker of this utility model;

[0022] In the figure, 1—rectangular base plate, 2—side brake swivel caster, 3—lower crossbeam, 4—column, 5—upper crossbeam, 6—upper pressure head of butt weld, 7—upper pressure head of fillet weld, 8—lower pressure head of weld, 9—lower pressure head base plate, 10—lifting power source, 11—guide arc hole, 12—fracture specimen of butt weld on flat plate, 13—fracture specimen of fillet weld. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] To address the problems of traditional universal testing machines, such as inconvenience, high cost, and limited application scenarios, this embodiment provides a multi-purpose hydraulic weld fracture machine. For example... Figure 1As shown, the multi-purpose hydraulic weld breaking machine includes a mobile flatbed cart, on which a breaking machine frame is fixedly installed. A weld upper pressure head is detachably installed at the top of the breaking machine frame, and a lifting power source 10 and a weld lower pressure head 8 are installed at the bottom of the frame. In use, the weld breaking specimen is placed on the weld lower pressure head 8. The lifting power source 10 moves the weld lower pressure head 8 and the weld breaking specimen towards the weld upper pressure head, causing the specimen to contact the upper pressure head and break under continued pressure, thus completing the weld breaking test.

[0025] Specifically, such as Figure 1 As shown, the mobile flatbed vehicle in this embodiment includes a rectangular base plate 1, with side-brake swivel casters 2 installed at the four corners of the bottom of the rectangular base plate 1 for easy movement and transportation. It can be easily moved to the site where weld seam breakage or flattening tests are required. Figure 1 As shown, the frame of the breaking machine in this embodiment has a rectangular structure, including a lower crossbeam 3 fixedly connected to the base plate, columns 4 installed on both sides of the lower crossbeam 3, and an upper crossbeam 5 installed on the top of the two columns 4; the upper crossbeam 5, the lower crossbeam 3 and the two columns 4 are firmly welded together, and the lower crossbeam 3 is firmly welded to the rectangular base plate 1.

[0026] like Figure 1 As shown, the weld pressure head in this embodiment includes a butt weld pressure head 6 with a plate structure and a blade at the bottom, and a fillet weld pressure head 7 with a T-shaped cross-section; simultaneously, the bottom of the upper crossbeam 5 is provided with a set of perforated mounting plates for mounting the weld pressure heads, so that either the butt weld pressure head 6 or the fillet weld pressure head 7 can be detachably mounted on the upper crossbeam 5 of the bending machine frame by bolts. Figure 1 As shown, in this embodiment, the weld seam pressure head 8 is a group of spaced-apart strip-shaped rectangular blocks. The weld seam pressure head 8 is mounted on the pressure head base plate 9, and the weld seam pressure head 8 is mounted on the telescopic rod of the lifting power source 10 via the pressure head base plate 9. The lifting power source 10 is fixedly mounted on the lower crossbeam 3. When the lifting power source 10 is activated, the telescopic rod of the lifting power source 10 drives the pressure head base plate 9, the weld seam pressure head 8, and the weld seam fracture specimen placed on the weld seam pressure head 8 to move towards the weld seam pressure head.

[0027] Furthermore, as a preferred technical solution in this embodiment, considering the guiding problem of the lifting power source 10 during the lifting process, such as... Figure 1 As shown, in this embodiment, guide arc-shaped holes 11 that cooperate with the column 4 are provided on both sides of the lower pressure head substrate 9.

[0028] Based on the specific structure of the aforementioned multi-purpose hydraulic weld breaking machine, fracture tests can be performed on butt welds of flat plates. Specifically, for example... Figure 2As shown, when conducting a fracture test on a butt weld of a flat plate, first, using mechanical methods such as an angle grinder or milling machine, a groove with a depth not exceeding 1 mm is made along the center line of the weld to be fractured on the butt weld fracture specimen 12, penetrating the entire weld; then, as shown... Figure 2 As shown, the slotted flat butt weld fracture specimen 12 is rotated 180° and placed on a set of weld pressure heads 8 with the weld facing downwards, as indicated by the arrow in the figure. At the same time, it is necessary to ensure that the weld position of the flat butt weld fracture specimen 12 is parallel to the set of weld pressure heads 8, and that the weld is located in the center between the set of pressure heads 8.

[0029] Finally, the lifting power source 10 is activated. The telescopic rod of the lifting power source 10 drives the lower pressure head base plate 9, the weld lower pressure head 8, and the flat butt weld fracture specimen 12 placed on the weld lower pressure head 8 to move towards the butt weld upper pressure head 6. After the flat butt weld fracture specimen contacts the butt weld upper pressure head 6, pressure is continued to be applied through the lifting power source 10. The flat butt weld fracture specimen 12 first bends and then breaks. After observing that the flat butt weld fracture specimen 12 has broken, the operator should quickly stop the lifting power source 10 and lower the lifting rod of the lifting power source 10 so that the flat butt weld fracture specimen 12 is a suitable distance away from the butt weld upper pressure head 6. Then, the specimen is removed, and the entire test is completed.

[0030] Based on the specific structure of the aforementioned multi-purpose hydraulic weld breaking machine, fracture tests of fillet welds can be performed. Specifically, for example... Figure 3 As shown, when conducting a fracture test on a fillet weld, it is also necessary to mechanically cut a groove with a depth not exceeding 1 mm along the weld along the centerline of the fillet weld on the pre-fracture side, such as using an angle grinder or milling machine, and the groove should penetrate the entire weld; then, as shown... Figure 3 As shown, the slotted fillet weld fracture specimen 13 is placed on a set of weld pressure heads 8 in the direction indicated by the arrow. When placed, the slotted side of the fillet weld fracture specimen 13 faces downward, and the two bottom edges of the fillet weld fracture specimen 13 are in contact with the set of weld pressure heads 8.

[0031] Finally, the pressure head 6 on the butt weld of the crossbeam 5 on the frame of the breaking machine is removed and replaced with the pressure head 7 on the fillet weld; the subsequent test process is the same as the breaking test of the butt weld of the flat plate.

[0032] It should be noted that in this embodiment, the lifting power source 10 uses an electric hydraulic jack when there is mains power and a manual hydraulic jack when there is no mains power. Neither the electric hydraulic jack nor the manual hydraulic jack is a commercially available finished product. However, the electric hydraulic jack and the manual hydraulic jack need to be able to generate a pressure of about 1000kN to meet the requirements of most weld breakage or flattening tests.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-purpose hydraulic weld breaker, characterized in that: This multi-purpose hydraulic weld breaking machine includes a mobile flatbed truck, on which a breaking machine frame is fixedly installed. A weld upper pressure head is detachably installed at the top of the breaking machine frame, and a lifting power source and a weld lower pressure head are installed at the bottom of the breaking machine frame. The weld breaking specimen is placed on the weld lower pressure head, and the lifting power source drives the weld lower pressure head and the weld breaking specimen to move towards the weld upper pressure head, so that the weld breaking specimen contacts the weld upper pressure head and breaks after further pressure is applied.

2. The multi-purpose hydraulic weld breaker according to claim 1, characterized in that: The mobile flatbed truck includes a rectangular base plate, and side-brake swivel casters are installed at the four bottom corners of the rectangular base plate.

3. The multi-purpose hydraulic weld breaker according to claim 2, characterized in that: The frame of the breaking machine is rectangular in shape, including a lower crossbeam fixedly connected to the base plate, columns installed on both sides of the lower crossbeam, and an upper crossbeam installed on the top of the two columns.

4. The multi-purpose hydraulic weld breaker according to claim 3, characterized in that: The weld pressure head includes a butt weld pressure head with a plate structure and a blade at the bottom, and a fillet weld pressure head with a T-shaped cross-section; both the butt weld pressure head and the fillet weld pressure head can be bolted to the upper crossbeam of the bending machine frame.

5. The multi-purpose hydraulic weld breaker according to claim 3, characterized in that: The weld seam pressing head is a set of spaced strip-shaped rectangular blocks; the weld seam pressing head is installed on the pressing head base plate, and the weld seam pressing head is installed on the telescopic rod of the lifting power source through the pressing head base plate; the two sides of the pressing head base plate are provided with guide arc-shaped holes that cooperate with the column.

6. The multi-purpose hydraulic weld breaker according to claim 5, characterized in that: The lifting power source is a manual hydraulic jack or an electric hydraulic jack, and the lifting rod of the lifting power source is fixedly connected to the center of the bottom of the lower pressure head base plate.

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