High-temperature aging test device for O-shaped ring for steering gear

Abstract

The utility model discloses an O-shaped ring high-temperature aging test device for a steering gear, which comprises a box body, a box door arranged on the box body, a temperature adjusting controller and a time adjusting controller arranged on the box body, a fixed seat arranged inside the box body, a pair of vertical columns arranged longitudinally arranged on the fixed seat, a pulling machine arranged on the fixed seat, a lower bracket arranged on the pulling machine, and an upper bracket arranged on the lower bracket, the lower support is provided with a cylindrical lower fixing column head, the head of the lower fixing column head is provided with an annular lower fixing ring groove, a transverse rod is transversely arranged between the stand columns, the transverse rod is provided with a force sensor, the lower portion of the force sensor is provided with an upper shaping shaft, the lower portion of the upper shaping shaft is provided with an upper support, and the upper support is provided with a cylindrical upper fixing column head. An annular upper fixing ring groove is formed in the head of the upper fixing column head. According to the high-temperature aging test device for the O-shaped ring for the steering gear, a tensile test and a high-temperature aging test are integrated, multiple purposes are achieved, the effect of natural aging of rubber can be achieved in a short time, and the test efficiency of the O-shaped ring is effectively improved.

Description

Technical Field

[0001] This utility model relates to a testing device, more specifically, a high-temperature aging testing device for O-rings used in steering gears. Background Technology

[0002] Nitrile butadiene rubber (NBR) and hydrogenated NBR O-rings are widely used in petrochemical, aerospace, automotive, and electronics industries. In the petrochemical industry, O-rings are widely used for sealing various pipelines, valves, pumps, and other equipment, effectively preventing liquid and gas leaks and ensuring production safety. In the aerospace industry, O-rings are used to manufacture seals for high-performance hydraulic and fuel systems, playing a crucial role. In the automotive industry, O-rings are widely used for sealing engines, transmissions, and braking systems, effectively improving vehicle performance and safety. In the electronics industry, O-rings are used to seal various high-performance electronic components, effectively preventing the intrusion of moisture and dust, ensuring the normal operation of equipment. In the steering gear industry, O-rings are widely used for sealing parts. Therefore, high-temperature aging testing of O-rings is particularly important. Utility Model Content

[0003] Therefore, it is necessary to provide a high-temperature aging test device for steering gear O-rings to address the above-mentioned technical problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A high-temperature aging test apparatus for steering gear O-rings is characterized in that the apparatus comprises a housing, a door on the housing, a temperature control controller and a time control controller on the housing, a fixed base inside the housing, and a pair of longitudinally arranged columns on the fixed base.

[0006] The fixed base is equipped with a lifting mechanism, the lifting mechanism is equipped with a lower support, the lower support is equipped with a cylindrical lower fixing head, and the head of the lower fixing head is equipped with an annular lower fixing groove.

[0007] A horizontally arranged crossbar is provided between the columns. A force sensor is provided on the crossbar. An upper shaping shaft is provided below the force sensor. An upper bracket is provided below the upper shaping shaft. A cylindrical upper fixing column head is provided on the upper bracket. The head of the upper fixing column head is provided with an annular upper fixing groove.

[0008] In a preferred embodiment of this utility model, the cross-sections of the lower fixing ring groove and the upper fixing ring groove are V-shaped.

[0009] In a preferred embodiment of this utility model, the column is provided with several adjustment through holes.

[0010] In a preferred embodiment of this utility model, a pair of annular anti-detachment protrusions are provided on the side walls of both the lower and upper fixed column heads.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention provides a high-temperature aging test device for steering gear O-rings. This device integrates tensile testing and high-temperature aging testing, offering multiple functions in one machine. It can achieve the effect of natural rubber aging in a short time, effectively improving the testing efficiency of O-rings. Furthermore, the specially designed lower and upper fixing posts effectively prevent the O-rings from falling off during testing, significantly reducing the labor intensity for workers. Attached Figure Description

[0013] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the high-temperature aging test device for O-rings used in steering gears according to this utility model.

[0015] Figure 2 for Figure 1 A schematic diagram of the internal structure of the high-temperature aging test device for O-rings used in steering gears;

[0016] Figure 3 for Figure 2 A magnified view of the details of region A in the diagram;

[0017] Figure 4 for Figure 3 A three-dimensional structural diagram of the lower fixed column head;

[0018] Figure 5 for Figure 4 A sectional view of the lower fixed column head along line BB;

[0019] Figure 6 This is a three-dimensional structural schematic diagram of another embodiment of the high-temperature aging test device for steering gear O-rings of this utility model.

[0020] Figure 7 This is a three-dimensional structural diagram of another embodiment of the lower fixed column head of this utility model;

[0021] Figure 8 for Figure 7 A sectional view of the lower fixed column head along line CC;

[0022] Figure 9 for Figure 8 A magnified view of the details of region D in the diagram;

[0023] The markings in the diagram are explained as follows: 1. Box body; 10. Force sensor; 11. Crossbar; 12. Column; 121. Adjustment through hole; 2. Box door; 3. Temperature control controller; 4. Time control controller; 5. Fixing base; 6. Lifting machine; 7. Lower support; 71. Lower fixing column head; 711. Lower fixing ring groove; 8. Upper support; 81. Upper fixing column head; 811. Upper fixing ring groove; 9. Upper shaping shaft; S. Anti-detachment ring protrusion. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] like Figures 1 to 3 As shown, the high-temperature aging test device for O-rings of steering gear includes a chamber 1, a chamber door 2, a temperature control controller 3 and a time control controller 4, and a fixed seat 5 inside the chamber 1, on which a pair of longitudinally arranged columns 12 are provided.

[0026] The fixed base 5 is equipped with a lifting mechanism 6, the lifting mechanism 6 is equipped with a lower support 7, the lower support 7 is equipped with a cylindrical lower fixing head 71, and the head of the lower fixing head 71 is equipped with an annular lower fixing groove 711.

[0027] A horizontally arranged crossbar 11 is provided between the columns 12. A force sensor 10 is provided on the crossbar 11. An upper shaping shaft 9 is provided at the lower part of the force sensor 10. An upper bracket 8 is provided at the lower part of the upper shaping shaft 9. A cylindrical upper fixing head 81 is provided on the upper bracket 8. An annular upper fixing groove 811 is provided at the head of the upper fixing head 81.

[0028] like Figure 4 and Figure 5 As shown, the cross-sections of the lower fixing ring groove 711 and the upper fixing ring groove 811 are V-shaped.

[0029] The following describes the operation of the high-temperature aging test device for the O-ring of the steering gear, including the steps:

[0030] Step S1: Place the O-ring to be tested between the upper fixed ring groove 811 and the lower fixed ring groove 711 to ensure that the O-ring is not subjected to tensile stress. Connect the elongation measurement system and adjust the zero point (i.e., determine the center distance between the two shafts when the elongation of the inner circumference of the O-ring is equal to zero).

[0031] Step S2: Start the tensioning machine 6 and stretch the specimen at a speed of (500±50) mm / min until the O-ring breaks. Record the load and elongation when the specimen breaks.

[0032] Step S3: The following is a high-temperature thermal aging test. Multiple O-rings to be tested are suspended on the upper fixed column head 81, with a spacing of 3cm to 5cm between each sample. The test temperature is set to 120℃, and the test duration is set to 168h.

[0033] Step S4: After the specified time has elapsed, remove the sample from the aging chamber and leave it at laboratory temperature for at least 2 hours. When the O-ring in its natural state is observed under appropriate light with a 2x magnifying glass, the surface of the O-ring should not have cracks, breaks, bubbles, or other defects exceeding the limits in Table 1.

[0034] like Figure 6 The diagram shows another embodiment of the testing equipment of this utility model. In this embodiment, the column 12 is provided with several adjusting through holes 121. By adjusting the through holes 121, the height of the crossbar 11 can be adjusted to accommodate the testing of O-rings of different sizes.

[0035] like Figures 7 to 9 The diagram shows another embodiment of the testing equipment of this utility model. In this embodiment, a pair of annular anti-detachment protrusions S are provided on the side walls of both the lower fixed head 71 and the upper fixed head 81. These anti-detachment protrusions S cooperate with the lower fixed ring groove 711 and the upper fixed ring groove 811. By utilizing the anti-detachment protrusions S, the O-rings can be effectively prevented from falling off the lower fixed head 71 and the upper fixed head 81 during the test, thereby improving the reliability and stability of the test.

[0036] This steering gear O-ring high-temperature aging test device integrates tensile testing and high-temperature aging testing, offering multiple functions in one machine. It can achieve the effect of natural rubber aging in a short time, effectively improving the testing efficiency of O-rings. In addition, the specially designed lower and upper fixing posts can effectively prevent the O-rings from falling off during the test, greatly reducing the labor intensity of workers.

[0037] Obviously, the embodiments described above are only some embodiments of this application, and not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application.

Claims

1. A high-temperature aging test device for O-rings used in steering gears, characterized in that, The steering gear O-ring high temperature aging test device includes a box (1), the box (1) is provided with a box door (2), the box (1) is provided with a temperature control controller (3) and a time control controller (4), the box (1) is provided with a fixed seat (5) inside, and the fixed seat (5) is provided with a pair of longitudinally arranged columns (12). The fixed base (5) is provided with a lifting machine (6), the lifting machine (6) is provided with a lower support (7), the lower support (7) is provided with a cylindrical lower fixing head (71), and the head of the lower fixing head (71) is provided with an annular lower fixing groove (711). A horizontally arranged crossbar (11) is provided between the columns (12). A force sensor (10) is provided on the crossbar (11). An upper shaping shaft (9) is provided at the lower part of the force sensor (10). An upper bracket (8) is provided at the lower part of the upper shaping shaft (9). A cylindrical upper fixing head (81) is provided on the upper bracket (8). An annular upper fixing groove (811) is provided at the head of the upper fixing head (81).

2. The high-temperature aging test apparatus for steering gear O-rings according to claim 1, characterized in that, The cross-sections of the lower fixing ring groove (711) and the upper fixing ring groove (811) are V-shaped.

3. The high-temperature aging test apparatus for steering gear O-rings according to claim 1, characterized in that, The column (12) is provided with several adjustment through holes (121).

4. The high-temperature aging test apparatus for steering gear O-rings according to claim 1, characterized in that, The lower fixing head (71) and the upper fixing head (81) are each provided with a pair of annular anti-detachment protrusions (S) on their side walls.

Images