Spacer strength tester for liquid hydrogen and liquid oxygen container

Abstract

The utility model relates to a spacer strength meter for a liquid hydrogen and liquid oxygen container, which comprises a base, a fixed rod, a movable rod and a mounting rod, the lower end of the fixed rod is fixedly connected with the upper surface of the base, the lower end of the movable rod is provided with a sliding block, the base is provided with a sliding chute, the sliding block is restrained in the sliding chute and is in sliding connection with the sliding chute, and the mounting rod is arranged on the base. A mounting plate is fixed on the mounting rod, and a tension meter is placed on the mounting plate; two transition rollers are arranged between the two winding devices and are respectively arranged on the two connecting plates; the tension meter is provided with a first connecting rope and a second connecting rope, the tension meter is connected with the connecting plate on the movable rod through the first connecting rope, the tension meter is connected with the mounting rod through the second connecting rope, the situation that the spacer is broken in advance due to shear force can be avoided, and the accuracy of the measured tension value is high.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic storage containers, and in particular to a spacer strength tester for liquid hydrogen and liquid oxygen containers. Background Technology

[0002] In cryogenic containers such as liquid hydrogen and liquid oxygen containers, spacers are required to isolate the temperature transfer between the inside and outside of the container. The tensile strength of the spacer is an important indicator of its quality. Existing tensile strength testers for spacers often use two plates to clamp the spacer when fixing it. The edges of the two plates can easily create a shearing effect on the spacer, causing it to break prematurely at the point of contact with the plate edge before it breaks due to the shearing effect of the plate edge, thus affecting the measurement of the true tensile strength of the spacer. Summary of the Invention

[0003] The purpose of this invention is to provide a spacer strength tester for liquid hydrogen and liquid oxygen containers with high detection accuracy.

[0004] The technical solution to achieve the purpose of this utility model is as follows:

[0005] A spacer strength tester for liquid hydrogen and liquid oxygen containers includes a base, a fixed rod, a movable rod, and a mounting rod. The lower end of the fixed rod is fixedly connected to the upper surface of the base. The lower end of the movable rod is provided with a slider. The base is provided with a sliding groove. The slider is constrained in the sliding groove and slidably connected to the sliding groove. A mounting plate is fixed on the mounting rod, and a tension gauge is placed on the mounting plate.

[0006] Both the fixed rod and the movable rod have a main rod, and each main rod is equipped with a winding device. The winding device includes a motor mounting plate fixed on the main rod, a motor fixed on the motor mounting plate, a reduction gearbox connected to the motor, a connecting plate, and a rotating plate. The reduction gearbox has an output shaft driven by the motor. The connecting plate is fixed on the main rod on the side opposite to the motor. The connecting plate has a through hole. The end of the output shaft passes through the main rod and the through hole. The end of the output shaft has a circumferentially protruding protrusion. The rotating plate is fitted onto the end of the output shaft. The rotating plate has a connecting groove for the output shaft to be inserted and a groove for the protrusion to be inserted. The groove communicates with the connecting groove. The rotating plate has a fixed connecting post and a movable connecting post. The fixed connecting post is fixedly connected to the rotating plate. The rotating plate has a sliding groove. A sliding block is provided in the sliding groove. An insert block is fixed in the movable connecting post. The insert block is inserted into the sliding groove and fixedly connected to the sliding block. A spring is provided in the sliding block. One end of the spring is connected to the sliding groove, and the other end is connected to the sliding block.

[0007] Two transition rollers are provided between the two winding devices, and the two transition rollers are respectively set on two connecting plates;

[0008] The tension gauge is equipped with a first connecting rope and a second connecting rope. The tension gauge is connected to the connecting plate on the movable rod through the first connecting rope, and the tension gauge is connected to the mounting rod through the second connecting rope.

[0009] With the above structure, when the tensile strength of the spacer needs to be tested, the two ends of the spacer are placed between the fixed connecting column and the movable connecting column of the two winding devices after passing through two transition rollers. The movable connecting column clamps the spacer under the elastic force of the spring. Then, the motor drives the rotating plate to rotate, and the spacer winds the fixed connecting column and the movable connecting column together. At the same time, the clamping force of the fixed connecting column and the movable connecting column on the spacer continuously increases until the spacer is pulled taut. Then the motor continues to rotate, the fixed rod remains stationary, and the movable rod moves toward the fixed rod. According to the interaction of forces, the tensile force displayed on the tension gauge is the tensile force on the spacer. When the spacer breaks, the value displayed on the tension gauge is the measured tensile force value of the spacer. This utility model can avoid the situation where the spacer breaks prematurely due to shear force, and the accuracy of the measured tensile force value is high.

[0010] Preferably, in order to facilitate the sliding of the movable rod, ball bearings are provided between the lower surface of the slider and the groove, and between the upper surface of the slider and the groove.

[0011] Preferably, to facilitate the connection between the insert block and the sliding block, the insert block and the sliding block are threaded together.

[0012] Preferably, in order to increase the friction between the fixed connecting column and the movable connecting column and the spacer, and at the same time increase the contact area between the fixed connecting column and the spacer where they clamp, the outer surface of the fixed connecting column and the movable connecting column is provided with a rubber layer. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the winding device structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the assembly of the fixed connecting column and the movable connecting column of this utility model. Detailed Implementation

[0017] like Figures 1 to 3As shown, the spacer strength tester for liquid hydrogen and liquid oxygen containers of this utility model includes a base 1, a fixed rod 2, a movable rod 3, and a mounting rod 4. The lower end of the fixed rod is fixedly connected to the upper surface of the base. The lower end of the movable rod is provided with a slider 5. The base is provided with a sliding groove 6, and the slider is constrained in the sliding groove and slidably connected to the sliding groove. A mounting plate 7 is fixed on the mounting rod, and a tension gauge 8 is placed on the mounting plate. Both the fixed rod and the movable rod have a main rod 9, and each main rod is provided with a winding device. The winding device includes a motor mounting plate 10 fixed on the main rod, a motor 11 fixed on the motor mounting plate, a reduction gearbox 12 connected to the motor for transmission, a connecting plate 13, and a rotating plate 14. The reduction gearbox has an output shaft 15 driven by the motor. The connecting plate is fixed on the main rod on the side opposite to the motor. The connecting plate is provided with a through hole, and the end of the output shaft passes through the main rod and the through hole. The end of the output shaft is provided with a circumferentially protruding protrusion 16. The rotating plate is fitted onto the end of the output shaft. The rotating plate has a connecting groove 17 for the output shaft to be inserted and a recess 18 for the protrusion to be inserted. The recess communicates with the connecting groove. The rotating plate has a fixed connecting post 19 and a movable connecting post 20. The fixed connecting post is fixedly connected to the rotating plate. The rotating plate has a sliding groove 21, and a sliding block 22 is provided in the sliding groove. The movable connecting post is fixed with an insert block 23. The insert block is inserted into the sliding groove and fixedly connected to the sliding block, preferably by screwing. A spring 24 is provided in the sliding block. One end of the spring is connected to the sliding groove, and the other end is connected to the sliding block. Two transition rollers 25 are provided between the two winding devices. The two transition rollers are respectively provided on the two connecting plates. The tension gauge is provided with a first connecting rope 26 and a second connecting rope 27. The tension gauge is connected to the connecting plate on the movable rod through the first connecting rope, and the tension gauge is connected to the mounting rod through the second connecting rope.

[0018] In some embodiments, the extensions of the first connecting rope and the second connecting rope are tangent to the lower end of the transition roller.

[0019] In some embodiments, ball bearings 29 are provided between the lower surface of the slider and the groove, and between the upper surface of the slider and the groove.

[0020] In some embodiments, the outer surfaces of the fixed connecting column and the movable connecting column are provided with a rubber layer.

[0021] With the above structure, when the tensile strength of the spacer 28 needs to be tested, the two ends of the spacer are placed between the fixed connecting column and the movable connecting column of the two winding devices after passing through two transition rollers. The movable connecting column clamps the spacer under the elastic force of the spring. Then, the motor drives the rotating plate to rotate, and the spacer winds the fixed connecting column and the movable connecting column together. At the same time, the clamping force of the fixed connecting column and the movable connecting column on the spacer continuously increases until the spacer is pulled taut. Then the motor continues to rotate, and the tensile strength displayed on the tension gauge is the tensile strength of the spacer. When the spacer breaks, the value displayed on the tension gauge is the measured tensile strength value of the spacer. This utility model can avoid the situation where the spacer breaks prematurely due to shear force, and the accuracy of the measured tensile strength value is high.

[0022] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A spacer strength tester for liquid hydrogen and liquid oxygen containers, characterized in that: The device includes a base, a fixed rod, a movable rod, and a mounting rod. The lower end of the fixed rod is fixedly connected to the upper surface of the base. The lower end of the movable rod is provided with a slider. The base is provided with a sliding groove. The slider is constrained in the sliding groove and slidably connected to the sliding groove. A mounting plate is fixed on the mounting rod, and a tension gauge is placed on the mounting plate. Both the fixed rod and the movable rod have a main rod, and each main rod is equipped with a winding device. The winding device includes a motor mounting plate fixed on the main rod, a motor fixed on the motor mounting plate, a reduction gearbox connected to the motor, a connecting plate, and a rotating plate. The reduction gearbox has an output shaft driven by the motor. The connecting plate is fixed on the main rod on the side opposite to the motor. The connecting plate has a through hole. The end of the output shaft passes through the main rod and the through hole. The end of the output shaft has a circumferentially protruding protrusion. The rotating plate is fitted onto the end of the output shaft. The rotating plate has a connecting groove for the output shaft to be inserted and a groove for the protrusion to be inserted. The groove communicates with the connecting groove. The rotating plate has a fixed connecting post and a movable connecting post. The fixed connecting post is fixedly connected to the rotating plate. The rotating plate has a sliding groove. A sliding block is provided in the sliding groove. An insert block is fixed in the movable connecting post. The insert block is inserted into the sliding groove and fixedly connected to the sliding block. A spring is provided in the sliding block. One end of the spring is connected to the sliding groove, and the other end is connected to the sliding block. Two transition rollers are provided between the two winding devices, and the two transition rollers are respectively set on two connecting plates; The tension gauge is equipped with a first connecting rope and a second connecting rope. The tension gauge is connected to the connecting plate on the movable rod through the first connecting rope, and the tension gauge is connected to the mounting rod through the second connecting rope.

2. The spacer strength tester for liquid hydrogen and liquid oxygen containers according to claim 1, characterized in that: Ball bearings are provided between the lower surface of the slider and the groove, and between the upper surface of the slider and the groove.

3. The spacer strength tester for liquid hydrogen and liquid oxygen containers according to claim 1, characterized in that: The insert block is threadedly connected to the sliding block.

4. The spacer strength tester for liquid hydrogen and liquid oxygen containers according to claim 1, characterized in that: The outer surfaces of the fixed connecting column and the movable connecting column are provided with a rubber layer.

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