CN214702746U - Gear test box with controllable temperature - Google Patents
Gear test box with controllable temperature Download PDFInfo
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- CN214702746U CN214702746U CN202121212780.8U CN202121212780U CN214702746U CN 214702746 U CN214702746 U CN 214702746U CN 202121212780 U CN202121212780 U CN 202121212780U CN 214702746 U CN214702746 U CN 214702746U
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Abstract
The utility model discloses a temperature-controllable gear test box, which is characterized by comprising a gear box body, a gear box cover and a gear mounting assembly, wherein the gear mounting assembly comprises at least two groups of gear shaft assemblies which are arranged in parallel, and gears which are meshed with each other are arranged on the gear shaft assemblies; and a temperature sensor for detecting the oil temperature and a heating pipe for heating are arranged in the gear box body. The utility model has the advantages of structural design is reasonable, operation convenient to use is favorable to reducing test cost, improves test efficiency.
Description
Technical Field
The utility model relates to an automobile parts test equipment technical field, very much relate to a controllable temperature's gear test box.
Background
The new energy automobile speed reducer is a core component of a new energy automobile power transmission system, is used as a power transmission device of a motor and wheels, and when the capacity of a battery of the whole automobile is fixed, the transmission efficiency of the speed reducer directly influences the endurance mileage of an electric automobile, so that the improvement of the transmission efficiency of the speed reducer also becomes one of important means for solving the mileage anxiety of the electric automobile. The transmission efficiency of the speed reducer is mainly influenced by factors such as oil stirring loss, gear engagement, bearing friction, oil seal friction and the like, wherein the oil stirring loss accounts for about 30% of the efficiency loss of the speed reducer, so that the research on the oil stirring loss of the new energy speed reducer is particularly important.
The oil stirring loss is the power loss generated by the rotation of the gear pair in the oil bath under the resistance action of lubricating oil, and under the working condition of high speed and low load, the oil stirring loss of the gear pair accounts for the important part of the total power loss of gear transmission. The oil stirring loss is related to the viscosity of the lubricating oil, the viscosity of the lubricating oil is influenced by temperature, a temperature control device is not arranged in the existing new energy reducer, and the temperature of the lubricating oil can be increased to the working temperature when the vehicle runs by long-time running, so that the test process is complex, the efficiency is low, and the cost is high.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a structural design is reasonable, and operation convenient to use is favorable to reducing test cost, improves the controllable temperature's of test efficiency gear test box.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the temperature-controllable gear test box is characterized by comprising a gear box body, a gear box cover and a gear mounting assembly, wherein the gear mounting assembly comprises at least two groups of gear shaft assemblies which are arranged in parallel, and gears which are meshed with each other are arranged on the gear shaft assemblies; and a temperature sensor for detecting the oil temperature and a heating pipe for heating are arranged in the gear box body.
By adopting the structure, when the oil stirring loss test is carried out, the lubricating oil in the gear box body can be heated through the heating pipe, so that the oil temperature is quickly increased to the working temperature when the real vehicle runs, and the oil temperature can be known in real time through the temperature sensor, thereby being matched with the heating pipe to keep the oil temperature at the working temperature when the real vehicle runs. Because the oil temperature can rise fast, need not the gear test box of long-time operation, it is more convenient to test to can save the testing cost, promote test efficiency. In addition, the temperature of lubricating oil in the gearbox body can be adjusted through the temperature sensor and the heating pipe, and therefore the influence of different temperatures on the oil stirring loss of the lubricating oil is explored.
Furthermore, the heating pipe is located in the middle of the bottom of the gearbox casing, and the temperature sensor is located on the side wall of the gearbox casing.
Therefore, the temperature sensor is arranged at a position far away from the heating pipe, and the temperature sensor is prevented from being influenced by the heating pipe due to the fact that the temperature sensor is too close to the heating pipe. Although the temperature sensor is far away from the heating pipe, in the heating process, lubricating oil in the gear box body can be stirred through the gear shaft assembly rotating at a low speed, so that the lubricating oil flows in the gear box body, the temperature is ensured to be more uniform, and the detection of the temperature sensor is more accurate. In addition, the gear shaft assembly is usually arranged in the middle of the gearbox body, namely above the heating pipe, and after the gear shaft assembly rotates, hot oil can be stirred to all places in the gearbox body more quickly, so that the oil temperature in the gearbox body rises quickly and uniformly.
Furthermore, the temperature sensors are four and are respectively positioned at four corners of the gearbox body.
Because the heating pipe is located the intermediate position of gear box bottom, stirs hot oil everywhere in the gear box through the rotation of gear shaft subassembly, but because lubricating oil flows and can't guarantee completely evenly, respectively sets up a temperature sensor through the four corners department at the gear box, can detect temperature everywhere respectively to can know the whole temperature condition of lubricating oil more accurately.
Furthermore, the temperature sensors are patch resistance type temperature sensors and are respectively attached to four corners of the bottom of the gear box body.
Furthermore, the heating pipe is in a snake-shaped bending arrangement.
In this way, a longer heating pipe can be provided in a limited space, thereby making the heating efficiency higher.
Furthermore, both ends of the gear shaft assembly are rotatably mounted on the gear box body through bearing assemblies, each bearing assembly comprises a bearing seat mounted on the gear box body in a penetrating manner and a bearing mounted in the bearing seat, and a bearing end cover is mounted on one outward side of each bearing seat.
Further, the gear shaft assembly includes a gear mounting front half shaft and a gear mounting rear half shaft that are coaxially disposed opposite each other, and a gear that is detachably mounted between the gear mounting front half shaft and the gear mounting rear half shaft.
Furthermore, the bottom of gear box body inclines, and is provided with the draining hole in the lower.
Furthermore, the bottom of the oil drainage hole is connected with an oil drainage pipe which is transversely bent, and the outlet end of the oil drainage pipe extends out of the gear box body and is provided with an oil drainage valve.
Furthermore, the bottom of gear box body detachably installs the cushion, the cushion is located let out oil valve's both sides, just the minimum height of cushion is greater than let out oil valve's height.
To sum up, the utility model has the advantages of structural design is reasonable, and operation convenient to use is favorable to reducing test cost, improves test efficiency.
Drawings
FIG. 1 is a schematic diagram of an explosion structure of a gear box for an oil churning loss test.
FIG. 2 is a schematic diagram of a top view structure of an oil churning loss test gearbox.
Fig. 3 is an exploded view of the gear mounting assembly.
Fig. 4 to 7 are schematic structural views of replaceable gear pairs with different reduction ratios.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the specific implementation: as shown in fig. 1 to 7, the oil stirring loss test gear box comprises a gear box body 1, a gear box cover 2 and a gear mounting component 3, wherein an opening is formed in the top of the gear box body 1, and the gear box cover 2 is detachably covered on the opening of the gear box body 1.
In order to facilitate the replacement of gear pairs with different reduction ratios, in the present embodiment, as shown in fig. 3, the gear mounting assembly 3 includes two sets of gear shaft assemblies arranged in parallel with each other on the gear housing 1, the gear shaft assemblies include gear mounting front half shafts 31 and gear mounting rear half shafts 32 arranged coaxially opposite to each other, and gears 33 detachably mounted between the gear mounting front half shafts 31 and the gear mounting rear half shafts 32; the gears 33 on the two sets of gear shaft assemblies are meshed with each other.
Specifically, in the present embodiment, in order to facilitate the installation and removal of the gear-mounting front half shaft, the gear-mounting rear half shaft, and the gear, the opposite ends of the gear-mounting front half shaft 31 and the gear-mounting rear half shaft 32 are respectively provided with a flange, and the flange is provided with first mounting holes uniformly distributed along the circumferential direction; the gear 33 is provided with a second mounting hole corresponding to the mounting hole on the flange, and the gear 33 is mounted between the gear mounting front half shaft 31 and the gear mounting rear half shaft 32 through bolts.
Meanwhile, in order to facilitate the installation and positioning of the gear 33, the flanges of the gear installation front half shaft 31 and the gear installation rear half shaft 32 are provided with coaxially arranged bosses, and two sides of the gear 33 are provided with grooves matched with the bosses.
In addition, in order to avoid the influence of extra oil stirring loss caused by the exposed screw cap of the bolt on the test result, the first mounting hole on the gear mounting front half shaft 31 is a countersunk hole, and the first mounting hole on the gear mounting rear half shaft 32 is a threaded through hole; the second mounting hole penetrates through the gear 33, and the diameter of the second mounting hole is consistent with the minimum diameter of the counter bore; the gear 33 is connected to the threaded through hole through bolts sequentially penetrating through the counter bore and the second mounting hole.
By adopting the structure, the gear is detachably and coaxially arranged between the gear mounting front half shaft and the gear mounting rear half shaft, the gear box cover can be detached from the gear box body once the gear pair needs to be replaced, and then the gear is detached from the gear mounting front half shaft and the gear mounting rear half shaft to be replaced, so that the gear boxes with different reduction ratios can be prevented from being tested, the number of the gear boxes is reduced, and the test cost is reduced. As shown in fig. 4 to 7, the gear pair with different reduction ratios or different types can be replaced for testing, and the influence of different parameters on the oil churning loss can be researched by replacing the gear pair with different gear parameters.
As shown in fig. 1 to 3, both ends of the gear shaft assembly are rotatably mounted on the gear housing 1 through a bearing assembly 7, the bearing assembly 7 includes a bearing housing 71 penetratingly mounted on the gear housing 1 and a bearing 72 mounted in the bearing housing 71, and a bearing cover 73 is mounted on an outward side of the bearing housing 71. The gear-mounted front half shaft 31 and the gear-mounted rear half shaft 32 are respectively mounted on corresponding bearings.
Additionally, in order to solve the technical problem in the utility model, in this embodiment, temperature control device has still been increased to can explore the influence that different temperatures stir the oil loss to lubricating oil. The method specifically comprises the following steps:
as shown in fig. 2, a temperature sensor 4 for detecting an oil temperature and a heating pipe 5 for heating are installed in the gear housing 1. The heating pipe 5 is located in the middle of the bottom of the gearbox housing 1, and the temperature sensor 4 is located on the side wall of the gearbox housing 1.
In the heating process, the gear shaft assembly can be slowly rotated, so that lubricating oil heated in the middle flows in the gear box body, and the oil temperature can be more uniform.
The four temperature sensors 4 are respectively positioned at four corners of the gear box body 1. Specifically, in this embodiment, the temperature sensors 4 are patch resistance type temperature sensors and are respectively attached to four corners of the bottom of the gear box body 1; the heating pipe 5 is arranged in a snake-shaped bending manner.
The temperature sensor is arranged at a position far away from the heating pipe, so that the temperature sensor is prevented from being influenced by the heating pipe due to the fact that the temperature sensor is too close to the heating pipe. Although the temperature sensor is far away from the heating pipe, in the heating process, lubricating oil in the gear box body can be stirred through the gear shaft assembly rotating at a low speed, so that the lubricating oil flows in the gear box body, the temperature is ensured to be more uniform, and the detection of the temperature sensor is more accurate. In addition, the gear shaft assembly is usually arranged in the middle of the gearbox body, namely above the heating pipe, and after the gear shaft assembly rotates, hot oil can be stirred to all places in the gearbox body more quickly, so that the oil temperature in the gearbox body rises quickly and uniformly.
And through respectively setting up a temperature sensor in the four corners department of gearbox housing, can detect temperature everywhere respectively to can learn the bulk temperature condition of lubricating oil more accurately. For example, the temperatures of four temperature sensors may be collected and weighted to be used as the oil temperature.
In addition, stir the oil loss and still receive factors such as lubricating oil liquid level height and stir oil distribution and influence, for the convenience of observing the oil stirring distribution in the gear box body, in this embodiment, still adopt following structure:
the opening part of the gear box body 1 is provided with threaded holes which are uniformly distributed along the circumferential direction, the gear box cover 2 is provided with bolt holes which are correspondingly arranged with the threaded holes, and the gear box cover 2 is installed on the gear box body 1 through bolts. A sealing gasket 6 is arranged between the opening of the gear box body 1 and the gear box cover 2, and the gear box cover 2 is made of transparent materials, particularly transparent acrylic plates.
Meanwhile, in order to view the liquid level height in the gear box body more intuitively, the oil level height indicator 11 which is vertically arranged is further arranged on the box wall of the gear box body 1, as shown in fig. 1, in order to observe the liquid level height from a plurality of angles, the two oil level height indicators are respectively arranged on the box walls at two ends of the gear installation component 3.
In this embodiment, since the gear case cover 2 is made of a transparent acrylic plate, the internal condition of the gear case can be directly observed, and therefore, the oil level indicator 11 in this embodiment is disposed inside the gear case, as shown in fig. 1.
In order to adjust the lubricating oil level height in the gear box body conveniently, the bottom of the gear box body 1 is obliquely arranged, and an oil drainage hole 8 is formed in the lowest position. The bottom of the oil drainage hole 8 is connected with an oil drainage pipe 9 which is transversely bent, and the outlet end of the oil drainage pipe 9 extends out of the gear box body 1 and is provided with an oil drainage valve 10.
In this embodiment, in order to facilitate installation of the oil drain pipe 9, the oil drain pipe 9 is made into a valve block, a transversely bent oil drain pipeline is arranged in the valve block, and the oil drain valve 10 is installed on the valve block, as shown in fig. 1 and 2.
In this embodiment, the bottom of the gear box body 1 is detachably provided with cushion blocks 13, the cushion blocks 13 are located on two sides of the oil drain valve 10, and the minimum height of the cushion blocks 13 is greater than the height of the oil drain valve 10.
Like this, can make the bottom of gearbox casing form the installation space of draining pipe 9 and bleeder valve 10 through the cushion on the one hand, on the other hand, when experimental, to the test bench base of different forms, can carry out the adaptation through changing different cushions.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The temperature-controllable gear test box is characterized by comprising a gear box body (1), a gear box cover (2) and a gear mounting assembly (3), wherein the gear mounting assembly (3) comprises at least two groups of gear shaft assemblies which are arranged in parallel, and gears (33) which are meshed with each other are arranged on the gear shaft assemblies; a temperature sensor (4) for detecting the oil temperature and a heating pipe (5) for heating are installed in the gear box body (1).
2. A temperature-controlled gear test chamber as claimed in claim 1, wherein the heating pipe (5) is located at a middle position of the bottom of the gear housing (1), and the temperature sensor (4) is located at a side wall of the gear housing (1).
3. A temperature-controllable gear test chamber according to claim 2, characterized in that the temperature sensors (4) are provided in four, respectively at four corners of the gear housing (1).
4. A temperature-controllable gear test chamber according to claim 3, characterized in that the temperature sensors (4) are patch resistance type temperature sensors and are respectively attached to the four corners of the bottom of the gear housing (1).
5. A controlled temperature gear test chamber according to claim 2, characterized in that the heating tube (5) is arranged in a serpentine shape.
6. A temperature-controllable gear test chamber according to claim 1, wherein both ends of the gear shaft assembly are rotatably mounted on the gear housing (1) through bearing assemblies (7), the bearing assemblies (7) comprise bearing seats (71) penetratingly mounted on the gear housing (1) and bearings (72) mounted in the bearing seats (71), and a bearing end cover (73) is mounted on one side of the bearing seats (71) facing outward.
7. A temperature-controllable gear test chamber as set forth in claim 1, wherein said gear shaft assembly includes a gear-mounted front half shaft (31) and a gear-mounted rear half shaft (32) disposed coaxially opposite each other, and a gear (33) detachably mounted between said gear-mounted front half shaft (31) and said gear-mounted rear half shaft (32).
8. A temperature-controllable gear test chamber as claimed in claim 1, characterized in that the bottom of the gear housing (1) is inclined and an oil drain hole (8) is arranged at the lowest position.
9. The temperature-controllable gear test box according to claim 8, wherein the bottom of the oil drainage hole (8) is connected with a transversely bent oil drainage pipe (9), the outlet end of the oil drainage pipe (9) extends out of the gear box body (1), and an oil drainage valve (10) is installed.
10. A temperature-controllable gear test chamber according to claim 9, characterized in that a cushion block (13) is detachably mounted on the bottom of the gear housing (1), the cushion block (13) is located on both sides of the oil drain valve (10), and the minimum height of the cushion block (13) is greater than the height of the oil drain valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121212780.8U CN214702746U (en) | 2021-05-27 | 2021-05-27 | Gear test box with controllable temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121212780.8U CN214702746U (en) | 2021-05-27 | 2021-05-27 | Gear test box with controllable temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214702746U true CN214702746U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121212780.8U Active CN214702746U (en) | 2021-05-27 | 2021-05-27 | Gear test box with controllable temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214702746U (en) |
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2021
- 2021-05-27 CN CN202121212780.8U patent/CN214702746U/en active Active
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