Testing device for applying radial force load to metal pipeline

Abstract

The utility model belongs to the technical field of testing, and particularly relates to a testing device for applying a radial force load to a metal pipeline, which comprises a testing platform, an upright post, a top surface mounting plate at the top of the upright post, a side surface mounting plate at the side part of the upright post, a servo hydraulic cylinder and a force sensor, the sliding table comprises a bottom plate, a shell, a cover plate, a supporting block, a fixed block and a T-shaped sliding block, a T-shaped groove is formed in the top face of the fixed block, the T-shaped sliding block is arranged in the T-shaped groove, a horizontal sliding table top is arranged on the T-shaped sliding block, an oil way is arranged in the fixed block, an oil inlet is formed in the bottom of the fixed block, and an oil outlet is formed in the T-shaped groove. The front end of a piston rod of the servo hydraulic cylinder is sequentially connected with a force sensor, a first connecting rod and a second connecting rod, and the second connecting rod is connected with the horizontal sliding table top. According to the utility model, different pulling forces are realized according to the pressure of an oil source and the model of the servo hydraulic cylinder, so that the required applied force load is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of testing, and in particular relates to a testing device for applying radial force load to a metal pipeline. Background Art

[0002] The structural static strength test is a basic test conducted on parts, components, assemblies or models under laboratory conditions to simulate the load and boundary conditions of the test object. In the test, measuring equipment, instruments, meters and specific testing techniques are used to measure parameters related to the working performance of the structure (such as strain, displacement, etc.), judge the actual working performance of the structure from the aspects of strength, stiffness, stability, etc., estimate the bearing capacity of the structure, determine the degree of compliance of the structure with the use requirements, and verify the rationality of the structural design and provide a basis for improvement.

[0003] Some metal pipeline products, such as the fuel supply pipeline of the engine, will be subjected to axial and radial force loads during use. In order to ensure the design strength and stiffness of the pipeline during design, it is necessary to conduct static strength tests on the metal pipeline to verify the rationality of the structural design. The axial force load on the metal pipeline can be applied through the axial tension and compression test equipment, but there is no complete set of equipment for applying radial force load on the metal pipeline. It is urgent to develop a set of test equipment that can meet the relevant environmental simulation. Utility Model Content

[0004] In order to solve the deficiencies in the prior art, the utility model provides a test device for applying a radial force load to a metal pipeline.

[0005] The utility model provides the following technical solutions:

[0006] A test device for applying radial force load to a metal pipeline, comprising a test platform, a column fixedly arranged on the test platform, a top surface mounting plate on the top of the column, a side mounting plate on the side of the column, a servo hydraulic cylinder and a force sensor, wherein the servo hydraulic cylinder is mounted on the column through a mounting seat, a support seat is arranged on the test platform, a sliding table is arranged on the support seat, the sliding table comprises a bottom plate, a rectangular shell integrally formed on the bottom plate, a cover plate on the shell, support blocks arranged in an array in the shell, a rectangular fixed block on the support block and a T-shaped sliding block in the fixed block, a T-shaped slot is arranged on the top surface of the fixed block, The T-shaped slider is arranged in the T-shaped slot, a horizontal sliding table is arranged on the T-shaped slider, an oil circuit is arranged inside the fixed block, an oil inlet is arranged at the bottom of the fixed block, the oil inlet is communicated with the oil circuit, an oil pipe joint is installed at the oil inlet, an oil inlet joint and an oil return joint are installed on the outer wall of one side of the shell, an oil pipe is connected between the lower end of the oil pipe joint and the oil inlet joint, an oil outlet is opened on the upper and lower side walls of the horizontal part of the T-shaped slot, the front end of the piston rod of the servo hydraulic cylinder is connected to the force sensor, the first connecting rod and the second connecting rod in sequence, and the second connecting rod is connected to the horizontal sliding table.

[0007] Compared with the prior art, the beneficial effects of the utility model are:

[0008] 1. The core component of the test device for applying radial force load to metal pipelines is the linear sliding device, i.e. the sliding table.

[0009] 2. The utility model realizes different pulling forces according to the size of the oil source pressure and the model of the servo hydraulic cylinder to achieve the required applied force load. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model;

[0011] Figure 2 It is a structural schematic diagram of the test platform in the utility model;

[0012] Figure 3 It is a structural schematic diagram of the center column of the utility model;

[0013] Figure 4 It is a structural schematic diagram of the top surface mounting plate in the utility model;

[0014] Figure 5 It is a structural schematic diagram of the side mounting plate in the utility model;

[0015] Figure 6 It is a structural schematic diagram of the mounting seat in the utility model;

[0016] Figure 7It is a schematic diagram of the combined structure of the bottom plate, the shell, the support block, the fixing block and the T-shaped slider in the utility model;

[0017] Figure 8 It is a schematic diagram of the combined structure of the bottom plate, the shell, the fixing block and the T-shaped slider in the utility model;

[0018] Fig. 9 This is a schematic diagram of the combined structure of the bottom plate, shell and support block in the utility model. Figure 1 ;

[0019] Fig.10 This is a schematic diagram of the combined structure of the bottom plate, shell and support block in the utility model. Figure 2 ;

[0020] Fig.11 It is a structural schematic diagram of the cover plate in the utility model;

[0021] Fig.12 This is a schematic diagram of the structure of the fixed block in the utility model. Figure 1 ;

[0022] Fig.13 This is a schematic diagram of the structure of the fixed block in the utility model. Figure 2 ;

[0023] Fig.14 This is a schematic diagram of the structure of the fixed block in the utility model. Figure 3 ;

[0024] Fig.15 It is a structural schematic diagram of the T-shaped slider in the utility model;

[0025] Fig.16 It is a structural schematic diagram of the horizontal sliding table in the utility model;

[0026] Fig.17 It is a structural schematic diagram of the first connecting rod in the utility model;

[0027] Fig.18 It is a structural schematic diagram of the second connecting rod in the utility model;

[0028] Fig.19 is a schematic diagram of the structure of test piece Ⅰ;

[0029] Fig. 20 is the structural schematic diagram of test piece II;

[0030] Fig.21 is the installation diagram of test piece Ⅰ;

[0031] Fig. 22 It is the installation diagram of test piece II;

[0032] Fig.23It is a schematic diagram of the use state of the utility model.

[0033] Among them, 1-test platform, 2-column, 3-top mounting plate, 4-side mounting plate, 5-servo hydraulic cylinder, 6-force sensor, 7-mounting seat, 8-support seat, 9-sliding table, 91-bottom plate, 911-bottom threaded hole, 92-housing, 921-rectangular groove, 922-reinforcement plate, 923-first threaded hole, 93-cover plate, 931-second threaded hole, 94-support block, 941-third threaded hole, 95-fixed block, 951-T-slot, 952-oil circuit, 953-oil inlet, 954-oil outlet, 955-fourth thread Hole, 96-T-type slider, 961-fifth threaded hole, 10-horizontal sliding table, 101-sixth threaded hole, 102-seventh threaded hole, 103-test piece mounting hole, 11-oil pipe joint, 12-oil inlet joint, 13-oil return joint, 14-oil pipe, 15-first connecting rod, 16-second connecting rod, 17-variable pressure oil source, 18-solenoid valve, 19-pressure gauge, 20-pressure regulating valve, 21-constant pressure oil source, 22-test piece I, 23-tooling I, 24-tooling II, 25-test piece II, 26-tooling III, 27-tooling IV. DETAILED DESCRIPTION

[0034] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0035] like Figure 1-Figure 23As shown, a test device for applying radial force load to a metal pipeline comprises a test platform 1, a column 2 fixedly arranged on the test platform 1, a top surface mounting plate 3 on the top of the column 2, a side mounting plate 4 on the side of the column 2, a servo hydraulic cylinder 5 and a force sensor 6, wherein the servo hydraulic cylinder 4 is mounted on the column 2 through a mounting seat 7, a support seat 8 is arranged on the test platform 1, and a sliding table 9 is arranged on the support seat 8, wherein the sliding table 9 comprises a bottom plate 91, a rectangular shell 92 integrally formed on the bottom plate 91, a cover plate 93 on the shell 92, a support block 94 arranged in an array in the shell 92, a rectangular fixed block 95 on the support block 94 and a T-shaped slider 96 in the fixed block 95, wherein a T-shaped slot 951 is provided on the top surface of the fixed block 95, and the T-shaped slider 96 is arranged in a T-slot 951, a horizontal sliding table 10 is arranged on the T-slot slider 96, an oil circuit 952 is arranged inside the fixed block 95, an oil inlet 953 is arranged at the bottom of the fixed block 95, the oil inlet 953 is communicated with the oil circuit 952, an oil pipe joint 11 is installed at the oil inlet 953, an oil inlet joint 12 and an oil return joint 13 are installed on the outer wall of one side of the shell 91, an oil pipe 14 is connected between the lower end of the oil pipe joint 11 and the oil inlet joint 12, an oil outlet 954 is provided on the upper and lower side walls of the transverse part of the T-slot 952, the front end of the piston rod of the servo hydraulic cylinder 5 is connected to the force sensor 6, the first connecting rod 15 and the second connecting rod 16 in sequence, and the second connecting rod 16 is connected to the horizontal sliding table 10.

[0036] The test device for applying radial force load to a metal pipeline has a rectangular groove 921 formed at the front end of a housing 92 , and a reinforcing plate 922 is arranged in the rectangular groove 921 .

[0037] The test device for applying radial force load to metal pipelines has upper and lower ends of the column 2 connected to the top mounting plate 3 and the test platform 1 by bolts, the side mounting plate 4 is connected to the column 2 by bolts, the support seat 8 is connected to the test platform 1 by bolts, the bottom plate 91 is provided with a bottom threaded hole 911, the bottom plate 91 and the support seat 8 are connected by bolts, the top of the shell 92 is provided with a first threaded hole 923, the middle of the cover plate 93 is opened, and the cover plate 93 is provided with a second threaded hole 931 around it, the shell 92 and the cover plate 9 3 are connected by bolts, the support block 94 is provided with a third threaded hole 941, the fixing block 95 is provided with a fourth threaded hole 955, the support block 94 and the fixing block 95 are connected by bolts, the T-shaped slider 96 is provided with a fifth threaded hole 961, the horizontal sliding table 10 is provided with a sixth threaded hole 101, the T-shaped slider 96 and the horizontal sliding table 10 are connected by bolts, the horizontal sliding table 10 is also provided with a seventh threaded hole 102 and a test piece mounting hole 103, and the threaded end of the second connecting rod 16 is connected to the seventh threaded hole 102.

[0038] A test platform 1 with a steel frame structure and two columns 2 with a trapezoidal structure form a test bench, and the test platform 1 and the columns 2 are connected together by bolts. The test platform 1 is provided with spare mounting holes, and can be mounted on the ground by chemical rivets or mounted on the ground rail by bolts.

[0039] The front end of the piston rod of the servo hydraulic cylinder 5 is connected to the force sensor 6, the first connecting rod 15 and the second connecting rod 16 in sequence. Both ends of the force sensor 6 have threaded holes. The threaded hole at one end is connected to the front end of the piston rod of the servo hydraulic cylinder 5, and the threaded hole at the other end is connected to the first connecting rod 15. The threaded end of the second connecting rod 16 is connected to the seventh threaded hole 102 on the horizontal sliding table 10. The first connecting rod 15 and the second connecting rod 16 are connected by a pin, and the horizontal sliding table 10 is installed on the T-shaped slider 96 of the sliding table 9 by bolts. During the test, the servo hydraulic cylinder 5 and the variable pressure oil source 17 are connected by an oil circuit, and a solenoid valve 18 and a pressure regulating valve 20 with a pressure gauge 19 are installed on the oil circuit.

[0040] The sliding platform 9 comprises a bottom plate 91, a rectangular shell 92 integrally formed on the bottom plate 91, a cover plate 93 on the shell 92, a support block 94 arranged in an array in the shell 92, a rectangular fixed block 95 on the support block 94, and a T-shaped slider 96 in the fixed block 95. A rectangular groove 911 is formed at the front of the shell 92, and a reinforcing plate 912 is arranged in the rectangular groove 911 to strengthen the structure and prevent the T-shaped slider 96 from hitting and breaking it; a sealing layer is placed under the cover plate 93 and then installed on the shell 92 by screws. The sealing layer is made of rubber leather and is mainly used to prevent dust and lubricating oil from overflowing; the oil inlet joint 12 on one side of the shell 92 is connected to the constant pressure oil source 21 through an oil pipe during the test.

[0041] The fixed block 95 is provided with an oil circuit 952 inside, which can be formed independently or processed in layers; the bottom of the oil circuit 952 is an oil inlet 953, and an oil pipe joint 11 is installed at the oil inlet 953, and the oil pipe joint 11 is connected to the oil pipe 14, and the oil pipe 14 is connected to the oil inlet joint 12 on the housing 91, and eight oil outlets 954 are respectively provided on the upper and lower side walls of the transverse part of the T-slot 951 of the fixed block 95. When in use, the oil is supplied through the constant pressure oil source 21, and the high-pressure lubricating oil enters from the oil inlet 953 and sprays out from a total of 16 oil outlets 954 in the upper and lower parts of the T-slot 951. When blocked by the T-slot 96, a layer of oil film will be formed between the T-slot 951 and the T-slot 96. The high-pressure oil film between the T-slot 951 and the T-slot 96 can greatly reduce the friction of the T-slot 96, ensuring that the T-slot 96 can slide freely along the front and rear directions of the T-slot 951, and the lubricating oil is recovered to the constant pressure oil source 21 through the oil return joint 13 on the housing 92. That is to say, the lubricating oil provided by the constant pressure oil source 21 enters through the oil inlet joint 12, the oil pipe 14, the oil pipe joint 11 and the fixed block oil inlet 953, is sprayed out from the oil outlet 954, and then flows into the gap between the support blocks 94 through the T-slot 951, and then is directly recovered to the oil source through the oil return joint 13; the oil inlet joint 12 is connected to the constant pressure oil source 21 through a hydraulic oil pipe, and the oil return pipe joint 13 is connected to the constant pressure oil source 21 through a hydraulic oil pipe. Fig.23 As shown in the figure, the broken lines with flow direction arrows are the oil supply pipe and the oil return pipe respectively.

[0042] The adjustable pressure oil source is composed of an oil pump, an oil tank, a pressure gauge, a pressure regulating valve, a two-way solenoid valve and a power switch. The switch, pressure, oil supply direction, etc. of the adjustable pressure oil source can be remotely controlled through an integrated control system.

[0043] The constant pressure oil source is composed of an oil pump, an oil tank, a pressure gauge and a power switch, etc. The opening and closing of the constant pressure oil source can be remotely controlled through an integrated control system.

[0044] The force control of the test is uniformly set and operated by the integrated controller, which includes an oil source controller and a data collector. The oil source control includes a constant pressure oil source switch, an adjustable pressure oil source switch, an adjustable pressure oil source oil pressure setting, solenoid valve opening and closing, hydraulic cylinder direction setting, etc. The data collector is mainly connected to the force sensor to collect the force and process the data.

[0045] The specific steps of the test are as follows:

[0046] (I) Assembly of the test device:

[0047] 1. Fix the test platform 1 to the ground rail with bolts.

[0048] 2. Fix the sliding table 9 on the test platform 1 through the support base 8, and install the horizontal sliding table 10 on the sliding table 9 through countersunk bolts;

[0049] 3. Connect the adjustable pressure oil source 17 to the servo hydraulic cylinder 5 through the hydraulic oil pipe to achieve the reciprocating motion of the servo hydraulic cylinder 5;

[0050] 4. Connect the constant pressure oil source 21 to the sliding table 9 through an oil pipe;

[0051] 5. Fix the servo hydraulic cylinder 5 on the column 2 through the mounting base 7. The two ends of the force sensor 6 are respectively connected to the front end of the piston rod of the servo hydraulic cylinder 5 and the first connecting rod 15. The second connecting rod 16 is installed on the horizontal sliding table 10. Then, the first connecting rod 15 and the second connecting rod 16 are connected with a pin. The horizontal sliding table 10 is installed on the T-shaped slider 96 of the sliding table 9 by bolts.

[0052] (II) Conduct static strength test of straight metal pipeline

[0053] 1. Fix the mounting flange surface at one end of the test piece Ⅰ22 as the fixed end to the top mounting plate 3 through the tooling Ⅰ23 or bolts;

[0054] 2. Turn on the constant pressure oil source 21 and check the forward and backward sliding ability of the T-shaped slide block 96;

[0055] 3. Adjust the front and rear position of the horizontal sliding table 10, and use the mounting flange surface of the other end of the test piece I 22 as the moving end to connect and fix it to the horizontal sliding table 10 through the tooling II 24 or bolts and the test piece mounting hole 103;

[0056] 4. Open the adjustable pressure oil source 17, adjust the oil pressure and the switch of the solenoid valve 18 through the integrated controller, and slowly increase the oil pressure according to the test requirements to make the servo hydraulic cylinder 5 work until the required force load is reached, and record the collected data (tension, oil pressure, etc.).

[0057] (III) Conduct static strength test on metal pipes with bends

[0058] 1. Fix the mounting flange surface at one end of the test piece II 25 as the fixed end to the side mounting plate 4 through the tooling III 26 or bolts;

[0059] 2. Turn on the constant pressure oil source 21 and check the forward and backward sliding ability of the T-shaped slide block 96;

[0060] 3. Adjust the position of the horizontal sliding table 10, and use the mounting flange surface of the other end of the test piece II 25 as the moving end to connect and fix it to the horizontal sliding table 10 through the tooling IV 27 or bolts and the test piece mounting hole 103;

[0061] 4. Open the adjustable pressure oil source 17, adjust the oil pressure and the switch of the solenoid valve 18 through the integrated controller, and slowly increase the oil pressure according to the test requirements to make the servo hydraulic cylinder 5 work until the required force load is reached, and record the collected data (tension, oil pressure, etc.).

[0062] In this way, the radial force load is applied by precisely controlling the magnitude of the force of the linear movement of the test device.

[0063] In addition to the above two types of metal pipelines, other types of metal pipelines can also be processed, such as S-type, Z-type and other metal pipes with flange surfaces.

[0064] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only a preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the utility model, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A test device for applying radial force load to a metal pipeline, characterized in that: The invention comprises a test platform (1), a column (2) fixedly arranged on the test platform (1), a top surface mounting plate (3) on the top of the column (2), a side mounting plate (4) on the side of the column (2), a servo hydraulic cylinder (5) and a force sensor (6); the servo hydraulic cylinder (5) is mounted on the column (2) via a mounting seat (7); a support seat (8) is arranged on the test platform (1); a sliding platform (9) is arranged on the support seat (8); the sliding platform (9) comprises a bottom plate (91), a rectangular shell (92) integrally formed on the bottom plate (91), a cover plate (93) on the shell (92), a support block (94) arranged in an array in the shell (92), a rectangular fixed block (95) on the support block (94) and a T-shaped sliding block (96) in the fixed block (95); a T-shaped groove (951) is provided on the top surface of the fixed block (95); the T-shaped sliding block (96) is arranged on the T In the groove (951), a horizontal sliding table (10) is arranged on the T-shaped sliding block (96), an oil circuit (952) is arranged inside the fixed block (95), an oil inlet (953) is arranged at the bottom of the fixed block (95), the oil inlet (953) is communicated with the oil circuit (952), an oil pipe joint (11) is installed at the oil inlet (953), an oil inlet joint (12) and an oil return joint (13) are installed on the outer wall of one side of the housing (92), an oil pipe (14) is connected between the lower end of the oil pipe joint (11) and the oil inlet joint (12), an oil outlet (954) is provided on the upper and lower side walls of the transverse part of the T-shaped groove (952), the front end of the piston rod of the servo hydraulic cylinder (5) is connected to the force sensor (6), the first connecting rod (15) and the second connecting rod (16) in sequence, and the second connecting rod (16) is connected to the horizontal sliding table (10).

2. The test device for applying radial force load to metal pipeline according to claim 1, characterized in that: A rectangular groove (921) is formed at the front end of the housing (92), and a reinforcing plate (922) is arranged in the rectangular groove (921).

3. The test device for applying radial force load to metal pipeline according to claim 1, characterized in that: The upper and lower ends of the column (2) are respectively connected to the top surface mounting plate (3) and the test platform (1) by bolts, the side mounting plate (4) is connected to the column (2) by bolts, the support seat (8) is connected to the test platform (1) by bolts, a bottom threaded hole (911) is provided on the bottom plate (91), the bottom plate (91) and the support seat (8) are connected by bolts, the top of the shell (92) is provided with first threaded holes (923) around, the cover plate (93) is open in the middle, and second threaded holes (931) are provided around the cover plate (93), and the shell (92) and the cover plate (93) are connected by bolts. The support block (94) is provided with a third threaded hole (941), the fixed block (95) is provided with a fourth threaded hole (955), the support block (94) and the fixed block (95) are connected by bolts, the T-shaped slider (96) is provided with a fifth threaded hole (961), the horizontal sliding table (10) is provided with a sixth threaded hole (101), the T-shaped slider (96) and the horizontal sliding table (10) are connected by bolts, the horizontal sliding table (10) is also provided with a seventh threaded hole (102) and a test piece mounting hole (103), and the threaded end of the second connecting rod (16) is connected to the seventh threaded hole (102).

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