High and low temperature performance test equipment for automobile steering device

Abstract

The utility model discloses high and low temperature performance test equipment for an automobile steering device, and belongs to the field of automobile parts. Comprising a high-low temperature generator; testing the test box; the air pipe is used for communicating the high-low temperature generator and the test box; and a valve is arranged on the air pipe. The high and low temperature performance testing equipment for the automobile steering device has the advantages of being low in cost and high in testing efficiency.

Description

Technical Field

[0001] The present application relates to the field of automobile parts, and in particular to a high and low temperature performance testing device for automobile steering gears. Background Art

[0002] With the improvement of automobile testing requirements, the performance testing requirements for automobile parts are also getting higher and higher, especially for automobile steering gears, which are particularly important for automobile driving safety. Various performance reliability tests are required under high and low temperature environments.

[0003] There are generally two methods for providing high and low temperature environmental testing of components such as automotive steering gears in the prior art:

[0004] The first method is to place the car steering gear and related test equipment directly in a walk-in high and low temperature test environment chamber, and then turn on the cold or heat source equipment to raise the overall internal temperature of the test chamber to the required temperature, and conduct relevant temperature tests. The operation time is long and the efficiency is not high. If a large number of test pieces need to be tested at high and low temperatures, it is not easy to achieve.

[0005] The second method is to place the steering gear of the automobile in a relatively small high and low temperature test chamber, and raise the temperature in the test chamber to the required temperature through air conditioning equipment. After a certain period of time, the test piece is frozen (or heated) thoroughly, and then it is taken out of the test chamber and subjected to static or necessary action tests of the performance reliability at the corresponding temperature on the test equipment to verify its action reliability at the corresponding temperature. Although the relative cost is not high, since the test piece needs to be removed from the test chamber after a certain installation and adjustment time before the test can be carried out, it is bound to cause the temperature of the test piece to no longer be in the temperature state required by the test, and there will also be unfavorable factors such as frost and ice during low temperature tests, so it cannot truly reflect the high and low temperature performance reliability of the test piece. In addition, since the transfer and assembly process takes time, the test time will also be greatly increased. Utility Model Content

[0006] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a high and low temperature performance test device for an automobile steering gear, comprising:

[0008] High and low temperature generators;

[0009] Test chambers;

[0010] Air duct, used to connect high and low temperature generators and test chamber;

[0011] There is a valve on the air duct;

[0012] In this application, the temperature generator and the test chamber are connected through an air duct. Thus, the high and low temperature generators can be turned on as cold or hot source equipment first, and then the steering gear can be placed in the test chamber, and then the valve can be opened, so that the steering gear performance can be tested while the high and low temperatures of the steering gear can be tested. There is no need to conduct two different tests separately, which reduces the manual handling of the steering gear, and the installation and adjustment of the test chamber, reduces labor costs, and improves test efficiency.

[0013] Furthermore, the high and low temperature generator includes a box body, a circulating air system arranged in the upper part of the box body, a water-cooled cascade compression condensation system arranged in the lower part of the box body, and a controller arranged on the outer wall of the box body, and the controller is respectively connected to the circulating air system and the water-cooled cascade compression condensation system through signals.

[0014] Furthermore, a first air supply port and a first air return port are provided on the casing, and the circulating air system comprises a casing, a circulating fan fixed on the casing, a fin-type evaporator respectively fixed in the casing, and an electric heater; the circulating fan comprises a motor, a volute, and a wind wheel driven by the motor; the air inlet of the volute faces the electric heater, a second air supply port for the volute to exhaust air is provided on the casing, a second return air port is provided at the lower end of the casing, and the air duct is connected to the second air supply port and the second return air port respectively through the first air supply port and the first return air port.

[0015] Furthermore, the second air supply port and the second air return port on the shell are both provided with pipe joints that are connected to the air duct.

[0016] Furthermore, the circulating air system also includes a heat-insulating layer arranged between the shell and the box body.

[0017] Furthermore, the test chamber is composed of a bottom plate, an upper cover, a left side plate, a right side plate, a rear plate, and a front plate; the rear plate is provided with a through hole connected to the air duct, the left side plate is provided with a first axial hole for placing the steering gear, the right side plate is provided with a second axial hole for placing the steering gear, and the upper cover is provided with a third axial hole for placing the steering gear operating lever.

[0018] Furthermore, a wire hole for arranging a temperature sensor is provided on the right side plate.

[0019] Furthermore, the test chamber also includes a connecting plate fixed on the bottom plate, a reinforcing plate respectively fixed on the left side plate and the right side plate, and a fixing device fixed on the connecting plate.

[0020] Furthermore, the fixing device includes a fixing plate, and a support rod with one end fixed on the fixing plate and the other end extending to the outside of the bottom plate.

[0021] Furthermore, the fixing plate is provided with a plurality of slots for fixing the steering gear.

[0022] The beneficial effect of the present application is that it provides a high and low temperature performance testing device for automobile steering gears with low cost and high testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0024] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements.

[0025] Schematically, components and elements are not necessarily drawn to scale.

[0026] In the attached picture:

[0027] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0028] Figure 2 It is a structural schematic diagram of a part of the embodiment, mainly showing a high and low temperature generator 1;

[0029] Figure 3 It is a structural schematic diagram of a part of the embodiment, mainly showing a high and low temperature generator 2;

[0030] Figure 4 is an overall schematic diagram according to an embodiment of the present application;

[0031] Figure 5 It is a structural schematic diagram of a part of the embodiment, mainly showing a test chamber 1;

[0032] Figure 6 It is a structural schematic diagram of a part of the embodiment, mainly showing a test chamber 2;

[0033] Figure 7 yes Figure 5 Enlarged view of part A.

[0034] Reference numerals:

[0035] 1. High and low temperature generator; 100. Box; 101. Water-cooled cascade compression condensing system; 102. Controller; 103. Cabinet door; 104. First air supply port; 105. First air return port; 106. Shell; 107. Circulation fan; 108. Volute; 109. Finned evaporator; 110. Electric heating; 111. Pipe joint; 112. Insulation layer; 2. Test chamber; 200. Bottom Plate; 201, upper cover; 202, left side plate; 203, right side plate; 204, rear plate; 205, front plate; 206, through hole; 207, first axis hole; 208, second axis hole; 209, third axis hole; 210, wire hole; 211, observation port; 212, connecting plate; 213, reinforcing plate; 214, fixing plate; 215, support rod; 216, slot; 3, air duct; 4, steering gear. DETAILED DESCRIPTION

[0036] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0037] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0038] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0039] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0040] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0041] Reference Figure 1-7, the high and low temperature performance test equipment of the automobile steering gear comprises a high and low temperature generator 1, a test chamber 2, and an air duct 3; the temperature generator and the test chamber 2 are connected through the air duct 3, and a valve is arranged on the air duct. The high and low temperature generator 1 comprises a box 100, a circulating air system, a water-cooled cascade compression condensation system 101, and a controller 102; the circulating air system is located inside the box 100, the water-cooled cascade compression condensation system 101 is installed in the lower part of the box 100, the box 100 comprises a cabinet door 103, and the controller 102 is embedded in the outer wall of the cabinet door 103, and is used to control the driving of the circulating air system and the water-cooled cascade compression condensation system 101. A first air supply port 104 and a first air return port 105 are provided on the box body 100, and the circulating air system includes a shell 106, a circulating fan 107, a finned evaporator 109, and an electric heater 110; the shell 106 is installed in the box body 100, and the circulating fan 107 is fixedly arranged on the box body 100, and the circulating fan 107 includes a motor, a volute 108, and a wind wheel driven by the motor; a second air supply port for the volute 108 to discharge air is provided on the shell body 106, and a second air return port is provided at the lower end of the shell body 106, and the air duct 3 is connected with the pipes on the second air supply port and the second return air port respectively through the first air supply port 104 and the first return air port 105; the finned evaporator 109 and the electric heater 110 are respectively fixedly arranged in the shell body 106, the finned evaporator 109 is located below the electric heater 110, and the air inlet of the volute 108 faces the electric heater 110.

[0042] The second air supply port and the second air return port on the housing 106 are both provided with pipe joints 111 made of epoxy resin, which are convenient for connection with the stainless steel throat clamp on the air duct 3 to prevent air leakage and prevent cold leakage. Since the high and low temperature generator 1 needs to provide air at -70℃ to +120℃, insulation and heat preservation are performed by using insulating joints and heat-insulating air duct 3.

[0043] The circulating air system also includes an insulation layer 112, which is arranged on the inner walls around the box body 100 and between the shell 106 and the cabinet door 103. The insulation layer 112 uses a 125mm thick sandwich polyurethane foam layer to insulate the interior.

[0044] The water-cooled cascade compression condensation system 101 includes a high-temperature refrigeration system and a low-temperature refrigeration system; both the high-temperature refrigeration system and the low-temperature refrigeration system are installed in the box 100, and the two are connected through an evaporative condenser; that is, the high-temperature refrigeration system is the cold source of the low-temperature stage. The high-temperature refrigeration system and the low-temperature refrigeration system are both existing technologies, and the working principles are consistent with the existing technologies, so they are not repeated.

[0045] The internal dimensions of the test chamber 2 are 900 mm wide, 400 mm deep and 500 mm high.

[0046] The temperature range of the test chamber 2 is -70°C to +120°C, and the temperature fluctuation is ≤±0.5°C. The test chamber 2 is composed of a bottom plate 200, an upper cover 201, a left side plate 202, a right side plate 203, a rear plate 204, and a front plate 205; wherein the bottom plate 200 and the rear plate 204 are an integrally formed structure, and the upper cover 201, the left side plate 202, the right side plate 203, and the front plate 205 are all detachably connected to the bottom plate 200 and the rear plate 204, so as to facilitate the placement of the steering gear 4. The rear plate 204 is provided with a through hole 206 which cooperates with the first air supply port 104 and the first air return port 105, the left plate 202 is provided with a first axial hole 207 for placing the steering gear 4, the right plate 203 is provided with a second axial hole 208 for placing the steering gear 4, and the upper cover 201 is provided with a third axial hole 209 for placing the operating rod of the steering gear 4; the right plate 203 is provided with a wire hole 210 for arranging a temperature sensor.

[0047] The front panel 205 is provided with an observation port 211 for users to observe.

[0048] The test chamber 2 also includes a connecting plate 212, a reinforcing plate 213, and a fixing device; the connecting plate 212 is fixed on the bottom plate 200, there are two reinforcing plates 213, which are respectively fixed on the left side plate 202 and the right side plate 203, one end of the reinforcing plate 213 is fixedly connected to the connecting plate 212, there are two fixing devices, the fixing devices are fixed on the connecting plate 212, and part of them extend out of the bottom plate 200.

[0049] The fixing device includes a fixing plate 214 and a support rod 215; the fixing plate 214 is fixed on the connecting plate 212, one end of the support rod 215 is fixed on the fixing plate 214, and the other end is extended to the outside of the bottom plate 200; the support rod 215 is a fixing bolt; thereby playing the role of supporting the test box 2.

[0050] The fixing plate 214 is provided with a plurality of slots 216 for fixing the steering gear 4 .

[0051] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A high and low temperature performance test equipment for automobile steering gear, characterized by: include: High and low temperature generators; Test chambers; An air duct, used to connect the high and low temperature generators with the test chamber; The air duct is provided with a valve; The high and low temperature generator includes a box, a circulating air system arranged in the upper part of the box, a water-cooled cascade compression condensation system arranged in the lower part of the box, and a controller arranged on the outer wall of the box, and the controller is respectively connected to the circulating air system and the water-cooled cascade compression condensation system by signals; The box body is provided with a first air supply port and a first air return port, and the circulating air system comprises a shell, a circulating fan fixed on the box body, a fin-type evaporator and an electric heater respectively fixed in the shell body; the circulating fan comprises a motor, a volute, and a wind wheel driven by the motor; the air inlet of the volute faces the electric heater, the shell body is provided with a second air supply port for the volute to discharge air, the lower end of the shell body is provided with a second air return port, and the air duct is connected to the second air supply port and the second return air port respectively through the first air supply port and the first return air port.

2. The high and low temperature performance testing equipment for automobile steering gear according to claim 1 is characterized in that: The second air supply port and the second air return port on the shell are both provided with pipe joints connected to the air duct.

3. The high and low temperature performance testing equipment for automobile steering gear according to claim 1 is characterized in that: The circulating air system also includes a heat-insulating layer arranged between the shell and the box.

4. The high and low temperature performance testing equipment for automobile steering gear according to claim 1 is characterized in that: The test box is composed of a bottom plate, an upper cover, a left side plate, a right side plate, a rear plate, and a front plate; the rear plate is provided with a through hole connected to the air duct, the left side plate is provided with a first axial hole for placing a steering gear, the right side plate is provided with a second axial hole for placing the steering gear, and the upper cover is provided with a third axial hole for placing a steering gear operating rod.

5. The high and low temperature performance testing equipment for automobile steering gear according to claim 4 is characterized in that: The right side plate is provided with a wire hole for arranging a temperature sensor.

6. The high and low temperature performance testing equipment for automobile steering gear according to claim 4 is characterized in that: The test chamber further comprises a connecting plate fixedly arranged on the bottom plate, a reinforcing plate respectively fixedly arranged on the left side plate and the right side plate, and a fixing device fixedly arranged on the connecting plate.

7. The high and low temperature performance testing equipment for automobile steering gear according to claim 6, characterized in that: The fixing device comprises a fixing plate and a supporting rod with one end fixed on the fixing plate and the other end extending to the outside of the bottom plate.

8. The high and low temperature performance testing equipment for automobile steering gear according to claim 7 is characterized in that: The fixing plate is provided with a plurality of slots for fixing the steering gear.

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