A multi-station creep testing machine

Abstract

The utility model discloses a kind of multi-station creep testing machines, belong to the technical field of creep test, including bottom box, the bottom box top is fixedly connected with crossbeam, the crossbeam bottom is installed with multiple groups of upper pull rod;Multiple groups of driving assemblies are installed in the bottom box, the number of driving assembly is same with upper pull rod, and the output end of each group of driving assembly is fixedly connected with lower pull rod;The end of upper pull rod and lower pull rod mutually close, and all are fixedly connected with fixture;Through multiple independent driving assemblies, and the design of corresponding upper pull rod and lower pull rod, can simultaneously aim at multiple groups of different material sample piece, test, then compare test result, overcome only one sample piece is tested, and then test efficiency, greatly improve.

Description

Technical Field

[0001] This utility model relates to the field of creep testing technology, and in particular to a multi-station creep testing machine. Background Technology

[0002] In mechanical equipment, it is often necessary to verify the performance of parts made of different materials, such as their tensile strength. For safety reasons, it is generally necessary to make a sample piece for each part made of different materials and test its performance using a testing machine.

[0003] In certain situations, such as inside a crane, some components need to be under tension for extended periods. In such cases, to verify whether different component materials can meet the requirements, it is necessary to conduct long-term tensile tests on the sample pieces, also known as creep tests.

[0004] However, existing creep testing machines can only test one specimen at a time, and cannot test multiple specimens of different materials at the same time, which greatly reduces the testing efficiency. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem in the prior art that it can only test the same sample and cannot test multiple sets of samples of different materials at the same time, and proposes a multi-station creep testing machine.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A multi-station creep testing machine includes a base box, a crossbeam fixedly connected to the top of the base box, and multiple sets of upper pull rods installed at the bottom of the crossbeam; multiple sets of drive assemblies are installed inside the base box, the number of drive assemblies being the same as the number of upper pull rods, and a lower pull rod fixedly connected to the output end of each drive assembly; a clamp is fixedly connected to one end of each of the upper and lower pull rods that are close to each other.

[0008] Preferably, the number of upper pull rods is 3-5 sets.

[0009] Preferably, the top of each set of upper pull rods is fixedly connected to the bottom of the crossbeam via a sensor.

[0010] Preferably, the drive assembly includes a motor and an outer cylinder; both the motor and the outer cylinder are fixedly connected inside the base box; a threaded rod is rotatably connected inside the outer cylinder, and a threaded cylinder is threadedly connected to the threaded rod; an extension rod is fixedly connected to the threaded cylinder, and the extension rod extends out of the top of the base box; a pull-down rod is fixed to the extension rod; and the motor drives the threaded rod to rotate.

[0011] Preferably, the outer cylinder sidewall is provided with a sliding groove, and the extension rod sidewall is fixedly connected with a follower plate; the follower plate is in contact with the sliding groove sidewall.

[0012] Preferably, an adjusting rod is fixedly connected to the side wall of the follower plate, and a limiting plate is inserted into the adjusting rod; a fixing plate is fixedly connected to the side wall of the outer cylinder, and the follower plate and the limiting plate can contact the fixing plate.

[0013] Preferably, a grating ruler is installed on the base box.

[0014] Preferably, it also includes a high and low temperature chamber; the clamp is located inside the high and low temperature chamber.

[0015] Preferably, it also includes a frame, on which the high and low temperature chamber slides; and a notched block is detachably connected to the bottom of the high and low temperature chamber.

[0016] Preferably, a support rod is fixedly connected to the top of the base box, and the crossbeam is fixed on the support rod.

[0017] Compared with the prior art, this utility model provides a multi-station creep testing machine, which has the following beneficial effects:

[0018] This multi-station creep testing machine, through the design of multiple independent drive components and corresponding upper and lower pull rods, can simultaneously test multiple sets of specimens of different materials, and then compare the test results. This overcomes the limitation of only being able to test one specimen at a time, thus greatly improving testing efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a multi-station creep testing machine proposed in this utility model;

[0020] Figure 2 This is a cross-sectional view of a multi-station creep testing machine proposed in this utility model;

[0021] Figure 3 This is a partial structural diagram of a multi-station creep testing machine proposed in this utility model. Figure 1 ;

[0022] Figure 4 This is a partial structural diagram of a multi-station creep testing machine proposed in this utility model. Figure 2 ;

[0023] Figure 5 This is a schematic diagram of the structure of a drive assembly for a multi-station creep testing machine proposed in this utility model;

[0024] Figure 6 This is a cross-sectional view of a drive assembly for a multi-station creep testing machine proposed in this utility model.

[0025] In the diagram: 1. Base box; 101. High and low temperature chamber; 102. Frame; 103. Notch block; 2. Crossbeam; 201. Support rod; 3. Upper pull rod; 301. Sensor; 4. Drive assembly; 401. Motor; 402. Gearbox; 403. Outer cylinder; 404. Threaded rod; 405. Threaded cylinder; 406. Extension rod; 5. Lower pull rod; 501. Clamp; 6. Slide groove; 601. Follower plate; 602. Adjusting rod; 603. Limiting plate; 604. Fixing plate; 7. Grating ruler. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Example:

[0029] like Figures 1-6 A multi-station creep testing machine includes a base box 1, a crossbeam 2 fixedly connected to the top of the base box 1, and four support rods 201 fixedly connected to the top of the base box 1, two on each side of the top of the base box 1. The crossbeam 2 is fixed on the support rods 201, and multiple sets of upper pull rods 3 are installed at the bottom of the crossbeam 2. The number of upper pull rods 3 is 3-5 sets, and in this case, 3 sets are preferred.

[0030] Multiple sets of drive components 4 are installed inside the base box 1. The number of drive components 4 is the same as that of the upper pull rod 3. Each set of drive components 4 has a pull rod 5 fixedly connected to its output end. The drive components 4 are used to drive the pull rod 5 to move.

[0031] Both the upper pull rod 3 and the lower pull rod 5 are fixedly connected to a clamp 501 at their close ends. The clamp 501 is a bench vise.

[0032] The upper pull rod 3 and the corresponding lower pull rod 5 are on the same vertical straight line to ensure that the specimen only bears tensile force.

[0033] During the creep test, multiple sets of specimens made of different materials, such as three sets, are fixed at both ends on the clamp 501, which is a bench vise. Then, the specimens are pulled down by the drive assembly 4 and the pull rod 5 to carry out the creep test.

[0034] Each drive component 4 is independent of each other, so different materials of sample pieces can be tested independently.

[0035] By designing multiple independent drive components 4, and corresponding upper pull rods 3 and lower pull rods 5, multiple test pieces of different materials can be tested simultaneously, and the test results can be compared. This overcomes the limitation of only being able to test one test piece at a time, thus greatly improving test efficiency.

[0036] like Figure 4 Each set of upper pull rods 3 is fixedly connected to the bottom of the crossbeam 2 via a sensor 301 at its top.

[0037] Sensor 301 is a tension sensor.

[0038] During creep testing, the tensile force value sensed by sensor 301 can be used to determine the tensile force value borne by the specimen.

[0039] like Figure 3 , Figure 5 , Figure 6 The drive assembly 4 includes a motor 401 and an outer cylinder 403; both the motor 401 and the outer cylinder 403 are fixedly connected inside the bottom box 1, and the top of the outer cylinder 403 is fixedly connected to the top of the bottom box 1.

[0040] A threaded rod 404 is rotatably connected inside the outer cylinder 403. A threaded cylinder 405 is threadedly connected to the threaded rod 404. The threaded cylinder 405 is in contact with the inner wall of the outer cylinder 403. An extension rod 406 is fixedly connected to the threaded cylinder 405. The extension rod 406 extends out of the top of the bottom box 1.

[0041] The extension rod 406 is hollow, and the threaded rod 404 is fitted inside the extension rod 406. The extension rod 406 extends out of the top of the base box 1, and the pull rod 5 is fixed on the extension rod 406.

[0042] Motor 401 drives threaded rod 404 to rotate. Motor 401 is fixedly installed at the bottom of base box 1. Gearbox 402 is also installed at the bottom of base box 1. The output end of motor 401 is fixedly connected to the input end of gearbox 402. The bottom of threaded rod 404 extends out of the bottom of outer cylinder 403, and the bottom of threaded rod 404 is fixedly connected to the output end of gearbox 402.

[0043] When the drive assembly 4 is working, the motor 401 is started, and the threaded rod 404 is driven to rotate through the gearbox 402. Then, under the action of the threaded cylinder 405, the pull rod 5 is moved downward through the extension rod 406, thereby pulling the sample piece to carry out the creep test.

[0044] like Figure 6The outer cylinder 403 has a sliding groove 6 on its side wall, and the extension rod 406 has a follower plate 601 fixedly connected to its side wall; the follower plate 601 is attached to the side wall of the sliding groove 6.

[0045] While the threaded rod 404 drives the threaded cylinder 405 to move, the follower plate 601 slides up and down in the groove 6 to prevent the pull rod 5 from rotating while moving downward.

[0046] like Figure 6 An adjusting rod 602 is fixedly connected to the side wall of the follower plate 601. A limiting plate 603 is inserted into the adjusting rod 602. The limiting plate 603 can slide up and down on the adjusting rod 602 and is then fixed by locking bolts.

[0047] A fixing plate 604 is fixedly connected to the side wall of the outer cylinder 403, and the follower plate 601 and the limiting plate 603 can contact the fixing plate 604.

[0048] When the drive assembly 4 is working, the fixed plate 604 restricts the range of movement of the extension rod 406 to avoid excessive movement and interference with other components.

[0049] like Figure 3 and Figure 5 A grating ruler 7 is installed on the bottom box 1.

[0050] Specifically: A fixing rod is fixedly installed on the bottom box 1, and a ruler strip is attached to the fixing rod. The reading head is installed on the pull-down rod 5, or it can be installed on the clamp 501 on the pull-down rod 5.

[0051] The grating ruler 7 can accurately determine the creep magnitude of the sample after being subjected to tension. In conjunction with the sensor 301, the creep magnitude of the sample under a specific tensile force can be obtained.

[0052] like Figure 1 and Figure 2 It also includes a high and low temperature chamber 101; the clamp 501 is located inside the high and low temperature chamber 101.

[0053] The high and low temperature chamber 101 uses temperature chambers that are already available on the market.

[0054] The high and low temperature chamber 101 can be used to test the performance of the test specimens at different temperatures.

[0055] like Figure 2 It also includes a frame 102, on which the high and low temperature chamber 101 slides. A notch block 103 is detachably connected to the bottom of the high and low temperature chamber 101. The notch block 103 prevents interference between the lower pull rod 5 and the high and low temperature chamber 101 during installation. The top of the high and low temperature chamber 101 is also detachable and has a through hole for the upper pull rod 3 to pass through.

[0056] Slide the high and low temperature chamber 101 onto the frame 102. If the high and low temperature chamber 101 is not needed, it can be removed from the parts that contact the high and low temperature chamber 101 with the upper pull rod 3 and the lower pull rod 5, as well as the side door, and then the high and low temperature chamber 101 can be pushed away directly.

[0057] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-station creep testing machine, comprising a base box (1), wherein a crossbeam (2) is fixedly connected to the top of the base box (1), characterized in that, Multiple sets of upper tie rods (3) are installed at the bottom of the crossbeam (2); Multiple sets of drive components (4) are installed inside the base box (1). The number of drive components (4) is the same as that of the upper pull rod (3). Each set of drive components (4) has a lower pull rod (5) fixedly connected to its output end. The upper pull rod (3) and the lower pull rod (5) are both fixedly connected to a clamp (501) at their close ends.

2. The multi-station creep testing machine according to claim 1, characterized in that, The number of upper pull rods (3) is 3-5 sets.

3. The multi-station creep testing machine according to claim 1, characterized in that, Each set of upper pull rods (3) is fixedly connected to the bottom of the crossbeam (2) via a sensor (301) at the top.

4. The multi-station creep testing machine according to claim 1, characterized in that, The drive assembly (4) includes a motor (401) and an outer cylinder (403). The motor (401) and the outer cylinder (403) are both fixedly connected inside the bottom box (1); A threaded rod (404) is rotatably connected inside the outer cylinder (403), and a threaded cylinder (405) is threadedly connected to the threaded rod (404). An extension rod (406) is fixedly connected to the threaded cylinder (405), and the extension rod (406) extends out of the top of the bottom box (1); The pull rod (5) is fixed to the extension rod (406); The motor (401) drives the threaded rod (404) to rotate.

5. A multi-station creep testing machine according to claim 4, characterized in that, The outer cylinder (403) has a sliding groove (6) on its side wall, and the extension rod (406) has a follower plate (601) fixedly connected to its side wall. The follower plate (601) is attached to the side wall of the slide (6).

6. A multi-station creep testing machine according to claim 5, characterized in that, An adjusting rod (602) is fixedly connected to the side wall of the follower plate (601), and a limiting plate (603) is inserted into the adjusting rod (602). A fixing plate (604) is fixedly connected to the side wall of the outer cylinder (403), and the follower plate (601) and the limiting plate (603) can contact the fixing plate (604).

7. A multi-station creep testing machine according to claim 1, characterized in that, A grating ruler (7) is installed on the bottom box (1).

8. A multi-station creep testing machine according to claim 1, characterized in that, It also includes a high and low temperature chamber (101); The clamp (501) is located inside the high and low temperature chamber (101).

9. A multi-station creep testing machine according to claim 8, characterized in that, It also includes a frame (102), on which the high and low temperature chamber (101) slides; The bottom of the high and low temperature chamber (101) is detachably connected to a notched block (103).

10. A multi-station creep testing machine according to claim 1, characterized in that, The bottom box (1) is fixedly connected to the top of the support rod (201), and the crossbeam (2) is fixed on the support rod (201).

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