Cooling device for testing service life of electric push rod

Abstract

The utility model provides a cooling device for testing the service life of an electric push rod, and belongs to the technical field of vehicle auxiliary equipment. According to the utility model, the motor cooler with the motor cooling water channel and the driver cooler with the driver cooling water channel are connected in series through the pipeline, so that the series connection of the motor cooling water channel and the driver cooling water channel is realized, and then the motor cooler and the driver cooler which are connected in series are connected to the water cooling machine through the pipeline; the motor cooler sleeves the motor of the electric push rod, and the driver cooler covers the driver of the electric push rod, so that the motor and the driver can be cooled when cold water circularly flows in the motor cooling water channel and the driver cooling water channel; the problem that intermittent testing is needed due to the fact that the temperature of the motor and the driver is too high is avoided, it is ensured that the motor can work continuously, the continuous service life testing requirement of the electric push rod is met, the testing time is effectively shortened, the testing efficiency is improved, and efficient operation of enterprises is promoted.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle auxiliary equipment, in particular to a cooling device for testing the life of an electric push rod. Background Art

[0002] At present, as a type of driver, the electric push rod can realize the extension and retraction of its drive shaft and provide power for the linear reciprocating movement of the supporting structure.

[0003] At present, most of the existing electric push rods on the market use motors as the driving source. The motor is connected to the power structure of the lifting shaft through a reduction structure to achieve the reciprocating extension and retraction of the lifting shaft. At the same time, the motor action is controlled by the driver output control instructions. For example, the electric push rod disclosed in patent CN110380571A has a driving mechanism, a gear box, a telescopic mechanism and a control module. The driving mechanism is fixedly mounted on the gear box. The gear box contains a gear set and an elastic coupling, and the gear set is connected to the main shaft of the driving mechanism. The telescopic mechanism is installed on the gear box and connected to the gear box through an elastic coupling to achieve the linear motion of the electric push rod. The control module is used for intelligent and flexible control of the electric push rod. When in use, the control module controls the main shaft action of the driving mechanism, and the main shaft of the driving mechanism outputs power to the gear box, and then drives the telescopic mechanism to move through the elastic coupling of the gear box. In summary, it can be concluded that the motor as the driving mechanism and the control module used to control the motor action are the core components to ensure the normal operation of the electric push rod. Therefore, the service life detection of the electric push rod in the industry needs to ensure that the motor can operate normally. In addition, since most of the existing electric linear actuators are used in non-continuous working conditions, in order to reduce the manufacturing and use costs, the motors of existing electric linear actuators are usually not equipped with active heat dissipation structures. As a result, in actual detection conditions, in order to ensure the normal operation of the motor, intermittent operation is usually used for detection, which cannot meet the needs of continuous detection and use, and thus requires more detection time, resulting in low detection efficiency and making it difficult to meet the development needs of efficient operation of the enterprise. Utility Model Content

[0004] In view of the above-mentioned problems existing in the prior art, the present invention aims to provide a cooling device for life testing of an electric push rod, in which a motor cooler and a driver cooler are set, and a connecting pipeline is set to connect the motor cooler and the driver cooler in series. At the same time, the motor cooler and the driver cooler connected in series are connected to a chiller through a water inlet pipeline and a water return pipeline, and the motor cooler is sleeved on the outside of the motor of the electric push rod, and the driver cooler is sleeved on the outside of the driver, so as to realize real-time cooling of the motor and the driver, thereby ensuring that the motor can work continuously, realizing continuous life testing of the electric push rod, shortening the testing time, improving the testing efficiency, and better meeting the development needs of efficient operation of enterprises.

[0005] The specific technical solutions are as follows:

[0006] A cooling device for testing the life of an electric linear actuator has the following characteristics, including:

[0007] The motor cooler includes an open cavity, and a motor cooling water channel is arranged in the wall of the open cavity. The motor cooling water channel includes a first water inlet and a first water outlet. The open cavity is sleeved on the outside of the motor of the electric push rod from the opening.

[0008] A driver cooler, the driver cooler includes a groove-shaped cavity, and a driver cooling water channel is arranged in the wall body constituting the groove-shaped cavity, the driver of the electric push rod is located in the groove-shaped cavity, and the driver cooling water channel includes a second water inlet and a second water outlet;

[0009] Chiller, the chiller is a circulating water chiller, the chiller includes a water supply port and a water return port;

[0010] The pipeline includes a connecting pipeline, a water inlet pipeline and a return pipeline, the two ends of the connecting pipeline are respectively connected to the first water outlet and the second water inlet, the two ends of the water inlet pipeline are respectively connected to the water supply port and the first water inlet, and the two ends of the return pipeline are respectively connected to the second water outlet and the return port.

[0011] The above-mentioned cooling device for testing the life of an electric push rod, wherein the motor cooler includes a cooling box, a front cover, a rear cover, a front cover sealing ring, and a rear cover sealing ring. The cooling box is arranged in a barrel shape, and the front cover and the rear cover are respectively installed at one end of the barrel mouth and one end of the barrel bottom of the cooling box, and the front cover sealing ring and the rear cover sealing ring are respectively arranged between the front cover and the rear cover and the end of the cooling box. At the same time, a plurality of first cooling water channels are opened in the wall of the cooling box and along the length direction, and the plurality of first cooling water channels are connected end to end to form a motor cooling water channel.

[0012] The above-mentioned cooling device for testing the life of an electric push rod, wherein each first cooling water channel runs through both ends of the cooling box, and a plurality of connecting grooves are provided on the surface of the front cover and the rear cover in contact with the cooling box, each connecting groove connects the ends of two adjacent first cooling water channels, and adjacent first cooling water channels connected by connecting grooves at both ends of the same first cooling water channel are respectively located on both sides thereof.

[0013] In the above-mentioned cooling device for testing the life of an electric push rod, an oil hole connected to the barrel cavity is also provided at the bottom of the cooling box, and at the same time, an oil filling nozzle facing the oil hole is provided on the rear cover.

[0014] The above-mentioned cooling device for testing the life of an electric push rod further includes a plurality of filling strips, which are embedded in the heat dissipation grooves of the outer shell of the motor of the electric push rod.

[0015] The above-mentioned cooling device for testing the life of an electric push rod, wherein tightening threaded holes are provided on the outer wall of the cooling box and on the adjacent two side surfaces, tightening screws are installed in the tightening threaded holes, and one end of the tightening screw selectively extends into the barrel cavity of the cooling box.

[0016] In the above-mentioned cooling device for testing the life of an electric push rod, a plug is provided in a first cooling water channel, and two ends of the first cooling water channel provided with the plug are respectively a first water inlet and a first water outlet.

[0017] The above-mentioned cooling device for testing the life of an electric push rod, wherein a first avoidance gap extending along the length direction to the barrel mouth is opened on one side wall of the cooling box, and at the same time, a second avoidance gap corresponding to the first avoidance gap is opened on the front cover, and the first avoidance gap and the second avoidance gap are connected to each other.

[0018] The above-mentioned cooling device for testing the life of an electric push rod, wherein a recessed limiting cavity is opened in the barrel cavity of the cooling box and on the barrel bottom, and a step structure is formed at the cavity opening of the limiting cavity, and when the motor cooler is mounted on the outside of the motor of the electric push rod, the end of the motor casing abuts against the step structure.

[0019] The above-mentioned cooling device for life test of electric push rod, wherein the driver cooler includes a pressing block, a plug and a clamping screw, a groove-shaped cavity is provided on the bottom surface of the pressing block, and the two ends of the groove-shaped cavity respectively penetrate the two side surfaces of the pressing block, and two second cooling water channels parallel to the cavity bottom of the groove-shaped cavity are provided on one side surface of the pressing block, and at the same time, a connecting water channel connecting the two second cooling water channels at the same time is provided on the side surface of the pressing block and adjacent to the side surface where the second cooling water channel is provided, and a plug is provided at the port of the connecting water channel, and the ends of the two second cooling water channels away from the connecting water channel are the second water inlet and the second water outlet respectively, and at the same time, a plurality of mounting holes are provided on the pressing block, and the clamping screws are connected to the motor cooler after passing through the mounting holes.

[0020] The positive effects of the above technical solution are:

[0021] The above-mentioned cooling device for testing the life of the electric push rod is provided with a motor cooler with a motor cooling water channel and a driver cooler with a driver cooling water channel, and the two are connected in series to a chiller through a pipe. The chiller continuously provides cold water to the motor cooler and the driver cooler, so that after the motor cooler is mounted on the outside of the motor of the electric push rod, and the driver cooler is mounted on the outside of the driver, the motor and the driver can be cooled in real time by the motor cooler and the driver cooler respectively, avoiding the problem of excessive temperature affecting the normal operation of the motor and the driver, thereby ensuring that the motor can work continuously and meeting the continuous life detection requirements of the electric push rod, thereby shortening the detection time, making the detection efficiency higher, and better meeting the development needs of the enterprise for efficient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of an embodiment of a cooling device for testing the life of an electric push rod according to the utility model;

[0023] Figure 2 This is a structural diagram of a motor cooler according to a preferred embodiment of the utility model;

[0024] Figure 3 A cross-sectional view of a motor cooler according to a preferred embodiment of the utility model;

[0025] Figure 4 An exploded view of a motor cooler according to a preferred embodiment of the utility model;

[0026] Figure 5 A schematic diagram of a motor cooling water channel of a motor cooler according to a preferred embodiment of the utility model;

[0027] Figure 6 This is a structural diagram of a cooling box in a preferred embodiment of the utility model;

[0028] Figure 7 This is a structural diagram of a driver cooler of a preferred embodiment of the utility model;

[0029] Figure 8 This is a cross-sectional view of a driver cooler according to a preferred embodiment of the present invention.

[0030] In the attached drawings: 1, motor cooler; 11, motor cooling water channel; 12, first water inlet; 13, first water outlet; 14, cooling box; 15, front cover; 16, rear cover; 17, front cover sealing ring; 18, rear cover sealing ring; 19, filling strip; 111, first cooling water channel; 112, connecting groove; 141, oil hole; 142, top threaded hole; 143, top screw; 144, first avoidance gap; 145, limit cavity; 151, second Avoidance gap; 161, oiling nozzle; 2, driver cooler; 21, driver cooling water channel; 22, second water inlet; 23, second water outlet; 24, pressure block; 25, plug; 26, pressing screw; 211, second cooling water channel; 212, connecting water channel; 241, groove-shaped cavity; 3, chiller; 4, pipeline; 41, connecting pipeline; 42, water inlet pipeline; 43, return pipeline; 5, electric push rod; 51, motor; 52, driver. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the attached Figure 1 To Attachment Figure 8 The technical solution provided by the utility model is described in detail, but the following content is not intended to limit the utility model.

[0032] Figure 1 This is a structural diagram of an embodiment of a cooling device for testing the life of an electric push rod according to the utility model. Figure 1 As shown, the cooling device for life test of the electric push rod provided in this embodiment includes: a motor cooler 1, a driver cooler 2, a chiller 3 and a pipeline 4.

[0033] Figure 2 This is a structural diagram of a motor cooler according to a preferred embodiment of the utility model; Figure 3 A cross-sectional view of a motor cooler according to a preferred embodiment of the utility model; Figure 4 This is an exploded view of a motor cooler according to a preferred embodiment of the utility model. Figure 1 , Figure 2 , Figure 3 as well as Figure 4As shown, the motor cooler 1 also includes an open cavity, which provides conditions for being subsequently sleeved on the outside of the motor 51 of the electric push rod 5. At the same time, a motor cooling water channel 11 is arranged in the wall of the motor cooler 1 constituting the open cavity, so that the motor cooling water channel 11 can be spread throughout the motor cooler 1, providing conditions for the subsequent heat transferred from the motor 51 to the motor cooler 1 by the cold water in the motor cooling water channel 11. In addition, the motor cooling water channel 11 includes a first water inlet 12 and a first water outlet 13, so that cold water can enter the motor cooling water channel 11 from the first water inlet 12 and be discharged through the first water outlet 13, realizing cold water circulation and meeting the continuous cooling demand. When in use, the open cavity of the motor cooler 1 is sleeved on the outside of the motor 51 of the electric push rod 5 from the opening, that is, the motor cooler 1 is wrapped from the outside of the motor 51 of the tested electric push rod 5, and the outer shell of the motor 51 is cooled by the motor cooler 1, thereby maintaining the continuous operation of the motor 51.

[0034] Specifically, the driver cooler 2 has a groove-shaped cavity 241. At this time, a driver cooling water channel 21 is provided in the wall body constituting the groove-shaped cavity 241. The driver cooling water channel 21 provides continuous cold water for the driver cooler 2, thereby maintaining the low temperature of the driver cooler 2, and providing conditions for the subsequent continuous cooling of the driver 52 of the electric push rod 5. When in use, the drive of the electric push rod 5 is set in the groove-shaped cavity 241, so that the driver cooler 2 covers the driver 52, so that the driver cooler 2 cools the driver 52. In addition, the driver cooling water channel 21 in the driver cooler 2 includes a second water inlet 22 and a second water outlet 23, that is, cold water enters the driver cooling water channel 21 from the second water inlet 22 and is discharged from the second water outlet 23, so that cold water circulation is realized, and cold water is continuously provided to the driver cooler 2 to meet the continuous testing requirements.

[0035] Specifically, the chiller 3 is a circulating water chiller 3, which can realize the cooling of hot water. At this time, the chiller 3 has a water supply port and a water return port, so that hot water with a higher temperature can enter the chiller 3 from the water return port, and obtain cold water with a lower temperature through the cooling of the chiller 3, and the cold water is discharged from the water supply port, so as to meet the demand for continuous supply of cold water, and also realize the recycling of water, save resources and reduce the cost of use. It is worth pointing out that the chiller 3 is a commonly used chiller 3 on the market, which can be directly purchased and used, so its specific structure is not repeated here.

[0036] Specifically, the pipeline 4 is used to connect the chiller 3, the motor cooler 1 and the driver cooler 2. At this time, the pipeline 4 includes a connecting pipeline 41, a water inlet pipeline 42 and a water return pipeline 43. The two ends of the connecting pipeline 41 are respectively connected to the first water outlet 13 and the second water inlet 22, that is, the motor cooling water channel 11 and the driver cooling water channel 21 are connected in series through the connecting pipeline 41, which meets the use requirements of the motor cooler 1 and the driver cooler 2 in series, realizes multiple uses of cold water, and avoids waste of resources. At the same time, the two ends of the water inlet pipe 42 are respectively connected to the water supply port and the first water inlet 12, that is, the cold water flowing out from the water supply port of the chiller 3 can flow to the first water inlet 12 through the water inlet pipe 42, and enter the motor cooling water channel 11 of the motor cooler 1 through the first water inlet 12, so as to cool the motor 51, and then the cold water flows to the driver cooling water channel 21 of the driver cooler 2 through the connecting pipe 41, so as to cool the driver 52, and finally, the two ends of the return water pipe 43 are respectively connected to the second water outlet 23 and the return water port, so that the used water in the driver cooling water channel 21 can flow out through the second water outlet 23, and flow to the return water port of the chiller 3 through the return water pipe 43, so as to realize water circulation and realize the cooling treatment of the motor 51 and the driver 52 during the water circulation process.

[0037] More specifically, the motor cooler 1 for cooling the motor 51 further comprises a cooling box 14, a front cover 15, a rear cover 16, a front cover sealing ring 17, and a rear cover sealing ring 18, wherein the cooling box 14 is arranged in a barrel shape. At this time, the front cover 15 and the rear cover 16 are respectively installed at one end of the barrel mouth and one end of the barrel bottom of the cooling box 14, that is, the two ends of the cooling box 14 are respectively sealed by the front cover 15 and the rear cover 16, so as to facilitate the installation of the motor 51 in the motor cooler 1. In addition, the front cover sealing ring 17 and the rear cover sealing ring 18 are respectively arranged between the front cover 15 and the rear cover 16 and the ends of the cooling box 14, that is, the front cover sealing ring 17 and the rear cover sealing ring 18 realize the sealing between the front cover 15 and the cooling box 14 and the rear cover 16 and the cooling box 14, thereby improving the sealing effect and providing conditions for the subsequent formation of a complete motor cooling water channel 11. At the same time, a plurality of first cooling water channels 111 are opened in the wall of the cooling box 14 and along the length direction. The motor cooling water channel 11 is formed by connecting the first cooling water channels 111 end to end, which provides conditions for cooling the cooling box 14 through the cold water in the first cooling water channel 111.

[0038] Figure 5 A schematic diagram of a motor cooling water channel of a motor cooler according to a preferred embodiment of the utility model; Figure 6 This is a structural diagram of a cooling box of a preferred embodiment of the utility model. Figures 3 to 6As shown, each first cooling water channel 111 runs through both ends of the cooling box 14 , which facilitates the processing of the first cooling water channels 111 and provides conditions for the subsequent interconnection of the first cooling water channels 111 . In addition, a plurality of connecting grooves 112 are provided on the surfaces of the front cover 15 and the rear cover 16 that are in contact with the cooling box 14. At this time, after the front cover 15 and the rear cover 16 are installed on the cooling box 14, each connecting groove 112 is connected to the ends of two adjacent first cooling water channels 111, that is, the two adjacent first cooling water channels 111 are connected through the connecting groove 112, and the adjacent first cooling water channels 111 connected by the connecting groove 112 at both ends of the same first cooling water channel 111 are respectively located on both sides thereof, so that the other first cooling water channel 111 connected at both ends of the first cooling water channel 111 is a different first cooling water channel 111, thereby realizing the series connection of the two adjacent first cooling water channels 111, that is, the connecting grooves 112 on the front cover 15 and the rear cover 16 realize the end-to-end connection of the plurality of first cooling water channels 111 on the cooling box 14, thereby forming a complete motor cooling water channel 11, which meets the subsequent use requirements of continuously providing cooling for the motor 51.

[0039] More specifically, an oil hole 141 connected to the barrel cavity is provided at the bottom of the cooling box 14, so that the thermal grease can enter the barrel cavity of the cooling box 14 through the oil hole 141 to fill the gap between the inner wall of the cooling box 14 and the outer shell of the motor 51, thereby improving the heat exchange effect. At the same time, an oil injection nozzle 161 is provided on the rear cover 16, which is directly opposite to the oil hole 141. The oil injection nozzle 161 is connected to a suction device through a pipeline, and the thermal grease is injected into the barrel cavity of the cooling box 14 or extracted from the barrel cavity of the cooling box 14 through the suction device, which facilitates the addition and removal of the thermal grease, and the structural design is more reasonable.

[0040] More specifically, the motor cooler 1 also has a plurality of filling strips 19. At this time, the plurality of filling strips 19 are embedded in the heat dissipation groove of the outer shell of the motor 51 of the electric push rod 5, that is, the heat dissipation groove of the outer shell of the motor 51 is filled by the filling strips 19, so that the outer surface of the motor 51 can be smoother, and the contact area between the outer shell of the motor 51 and the inner wall of the cooling box 14 can be effectively increased, and the heat exchange effect is better, and the cooling performance is further improved. Preferably, a plurality of threaded holes for taking out the strips are opened on each filling strip 19, that is, when the filling strip 19 needs to be taken out of the heat dissipation groove of the outer shell of the motor 51 later, a screw can be screwed into the threaded hole for taking out the strips, and the end of the screw extends from the threaded hole for taking out the strips to support the bottom of the heat dissipation groove of the outer shell, and the filling strip 19 is pushed out of the heat dissipation groove of the outer shell, thereby avoiding the problem that the filling strip 19 is difficult to take out of the heat dissipation groove of the outer shell because the surface is flush after being embedded in the heat dissipation groove of the outer shell, and the structural design is more reasonable.

[0041] More specifically, tightening threaded holes 142 are provided on the outer wall of the cooling box 14 and on the adjacent two side surfaces. At this time, a tightening screw 143 is installed in the tightening threaded hole 142 , and one end of the tightening screw 143 selectively extends into the barrel cavity of the cooling box 14 . During installation, first install the tightening screw 143 in the tightening threaded hole 142 and the end of the tightening screw 143 will not extend into the barrel cavity of the cooling box 14. When the cooling box 14 is sleeved outside the motor 51, continue to tighten the tightening screw 143 so that the end of the tightening screw 143 extends into the barrel cavity of the cooling box 14 and rests on the outer shell of the motor 51. By continuing to tighten the tightening screw 143, the tightening screw 143 can push the motor 51 toward the opposite side, so that the outer shell of the motor 51 can be tightly attached to the two side surfaces facing the two side surfaces with the tightening threaded hole 142, which not only improves the installation stability of the motor 51, but also ensures that the outer shell of the motor 51 and the inner wall of the cooling box 14 are tightly attached, with better contact, thereby ensuring the effectiveness of heat exchange.

[0042] More specifically, a blockage is further provided in a first cooling water channel 111, that is, the two ends of the first cooling water channel 111 are separated into two relatively independent spaces by the blockage. At this time, the two ends of the first cooling water channel 111 provided with the blockage are respectively set as the first water inlet 12 and the first water outlet 13, that is, when all the first cooling water channels 111 are connected end to end through the connecting groove 112 to form the motor cooling water channel 11, the motor cooling water channel 11 at this time is an annular structure, and the annular motor cooling water channel 11 is separated by the blockage, so that the two ends of the motor cooling water channel 11 can form the first water inlet 12 and the first water outlet 13 respectively, meeting the use requirements of cold water flowing in and out.

[0043] More specifically, a first avoidance gap 144 is provided on one side wall of the cooling box 14 and extends to the barrel mouth along the length direction. At the same time, a second avoidance gap 151 corresponding to the first avoidance gap 144 is provided on the front cover 15. When the front cover 15 is installed on the cooling box 14, the first avoidance gap 144 and the second avoidance gap 151 are connected to each other, so that when the motor cooler 1 is subsequently mounted on the outside of the motor 51, the wire outlet of the motor 51 can enter the first avoidance gap 144 and the second avoidance gap 151, that is, the wire outlet of the motor 51 is avoided by the first avoidance gap 144 and the second avoidance gap 151, thereby ensuring that the motor cooler 1 can be mounted in place outside the motor 51. In addition, a through socket hole is provided on the front cover 15. At this time, when the front cover 15 is installed on one end of the barrel mouth of the cooling box 14, the socket hole is connected with the barrel cavity of the cooling box 14, and when it is sleeved on the outside of the motor 51 of the electric push rod 5, the motor 51 can be inserted into the motor cooler 1 through the socket hole, which provides conditions for the sleeve installation of the motor 51.

[0044] More specifically, a limiting cavity 145 is further provided in the barrel cavity of the cooling box 14. At this time, the limiting cavity 145 is located on the barrel bottom, so that a step structure can be formed in the barrel cavity of the cooling box 14 and at the cavity mouth of the limiting cavity 145, so that when the motor cooler 1 is subsequently mounted on the outside of the motor 51 of the electric push rod 5, the end of the outer shell of the motor 51 can abut against the step structure, so that a gap can be formed between the end of the motor 51 and the barrel bottom through the limiting cavity 145, so that the oil hole 141 is connected through the limiting cavity 145, so that the thermal conductive silicone grease that subsequently enters from the oiling nozzle 161 and the oil hole 141 can smoothly enter the cooling box 14 and fill the gap between the cooling box 14 and the motor 51, thereby achieving full contact between the motor 51 and the cooling box 14 and improving the heat conduction effect.

[0045] Figure 7 This is a structural diagram of a driver cooler of a preferred embodiment of the utility model; Figure 8 This is a cross-sectional view of a driver cooler of a preferred embodiment of the utility model. Figure 1 , Figure 7 as well as Figure 8 As shown, the driver cooler 2 for cooling the driver 52 of the electric push rod 5 further includes a pressing block 24, a plug 25 and a clamping screw 26. At this time, a groove-shaped cavity 241 is provided on the bottom surface of the pressing block 24, and the two ends of the groove-shaped cavity 241 respectively penetrate the two side surfaces of the pressing block 24, so that the pressing block 24 is pressed on the outside of the driver 52 of the electric push rod 5 in the form of a cover, that is, the driver 52 is located in the groove-shaped cavity 241. In addition, two second cooling water channels 211 parallel to the bottom of the groove-shaped cavity 241 are provided on one side surface of the pressing block 24, so that the second cooling water channels 211 can completely cover the groove-shaped cavity 241, and the driver 52 can be cooled more evenly later. In addition, a connecting water channel 212 is provided on the pressing block 24 and on a side surface adjacent to the side surface where the second cooling water channel 211 is provided, which simultaneously connects the two second cooling water channels 211, that is, one end of the two second cooling water channels 211 is connected through the connecting water channel 212, thereby realizing the series connection of the two second cooling water channels 211, and providing conditions for the flow of cold water. In addition, a plug 25 is provided at the port of the connecting water channel 212, which facilitates the processing of the connecting water channel 212 and also prevents leakage problems. In addition, the ends of the two second cooling water channels 211 away from the connecting water channel 212 are respectively set as the second water inlet 22 and the second water outlet 23, thereby realizing the inflow and outflow of water in the driver cooling water channel 21, and meeting the demand for water circulation. At the same time, a number of mounting holes are also provided on the pressing block 24. At this time, the clamping screw 26 is passed through the mounting hole and connected to the motor cooler 1, so that when the driver 52 is subsequently installed in the groove-shaped cavity 241 of the pressing block 24, it can be fixed by the clamping screw 26, which improves the stability during testing and makes the structural design more reasonable.

[0046] The cooling device for life test of the electric push rod provided in this embodiment includes a motor cooler 1, a driver cooler 2, a chiller 3 and a pipeline 4; the motor cooler 1 with a motor cooling water channel 11 and the driver cooler 2 with a driver cooling water channel 21 are connected in series through the pipeline 4, so that the motor cooling water channel 11 and the driver cooling water channel 21 are connected in series, and then the motor cooler 1 and the driver cooler 2 connected in series are connected to the chiller 3 through the pipeline 4, and the motor cooler 1 is sleeved on the outside of the motor 51 of the electric push rod 5, and the driver 52 of the electric push rod 5 is covered by the driver cooler 2, so that when the cold water circulates in the motor cooling water channel 11 and the driver cooling water channel 21, the motor 51 and the driver 52 can be cooled and cooled, thereby avoiding the problem of intermittent testing due to excessive temperatures of the motor 51 and the driver 52, ensuring that the motor 51 can work continuously, meeting the continuous life test requirements of the electric push rod 5, effectively shortening the test time, improving the test efficiency, and promoting efficient operation of the enterprise.

[0047] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A cooling device for testing the life of an electric linear actuator, characterized in that: include: A motor cooler, the motor cooler comprising an open cavity, and a motor cooling water channel is arranged in the wall of the open cavity, the motor cooling water channel comprises a first water inlet and a first water outlet, and the open cavity is sleeved outside the motor of the electric push rod from the opening; A driver cooler, the driver cooler comprises a groove-shaped cavity, and a driver cooling water channel is arranged in a wall body constituting the groove-shaped cavity, the driver of the electric push rod is located in the groove-shaped cavity, and the driver cooling water channel comprises a second water inlet and a second water outlet; A water chiller, wherein the water chiller is a circulating water chiller, and the water chiller comprises a water supply port and a water return port; The pipeline comprises a connecting pipeline, a water inlet pipeline and a water return pipeline, the two ends of the connecting pipeline are respectively connected to the first water outlet and the second water inlet, the two ends of the water inlet pipeline are respectively connected to the water supply port and the first water inlet, and the two ends of the water return pipeline are respectively connected to the second water outlet and the water return port.

2. The cooling device for testing the life of an electric linear actuator according to claim 1, characterized in that: The motor cooler includes a cooling box, a front cover, a rear cover, a front cover sealing ring, and a rear cover sealing ring. The cooling box is arranged in a barrel shape, and the front cover and the rear cover are respectively installed at one end of the barrel mouth and one end of the barrel bottom of the cooling box, and the front cover sealing ring and the rear cover sealing ring are respectively arranged between the front cover and the rear cover and the ends of the cooling box. At the same time, a plurality of first cooling water channels are opened in the wall of the cooling box and along the length direction, and the plurality of the first cooling water channels are connected end to end to form the motor cooling water channel.

3. The cooling device for testing the life of an electric linear actuator according to claim 2, characterized in that: Each of the first cooling water channels runs through both ends of the cooling box, and a plurality of connecting grooves are provided on the surface of the front cover and the rear cover in contact with the cooling box, and each of the connecting grooves connects the ends of two adjacent first cooling water channels, and the adjacent first cooling water channels connected at both ends of the same first cooling water channel through the connecting grooves are respectively located on both sides thereof.

4. The cooling device for testing the life of an electric linear actuator according to claim 2, characterized in that: The bottom of the cooling box is also provided with an oil hole connected to the barrel cavity, and at the same time, the rear cover is provided with an oil injection nozzle facing the oil hole.

5. The cooling device for testing the life of an electric linear actuator according to claim 1, characterized in that: It also includes a plurality of filling strips, which are embedded in the heat dissipation grooves of the outer shell of the motor of the electric push rod.

6. The cooling device for testing the life of an electric linear actuator according to claim 2, characterized in that: Tightening threaded holes are provided on the outer side wall of the cooling box and on the adjacent two side surfaces, and tightening screws are installed in the tightening threaded holes, and one end of the tightening screw selectively extends into the barrel cavity of the cooling box.

7. The cooling device for testing the life of an electric linear actuator according to claim 3, characterized in that: A plug is provided in the first cooling water channel, and two ends of the first cooling water channel provided with the plug are the first water inlet and the first water outlet respectively.

8. The cooling device for testing the life of an electric linear actuator according to claim 2, characterized in that: A first avoidance gap extending to the barrel mouth along the length direction is opened on one side wall of the cooling box. At the same time, a second avoidance gap corresponding to the first avoidance gap is opened on the front cover, and the first avoidance gap and the second avoidance gap are connected to each other.

9. The cooling device for testing the life of an electric linear actuator according to claim 2, characterized in that: A recessed limiting cavity is provided in the barrel cavity of the cooling box and on the barrel bottom, and a step structure is formed at the cavity opening of the limiting cavity. When the motor cooler is sleeved on the outside of the motor of the electric push rod, the end of the motor housing abuts against the step structure.

10. The cooling device for testing the life of an electric linear actuator according to claim 1, characterized in that: The driver cooler includes a pressing block, a plug and a clamping screw. A groove-shaped cavity is provided on the bottom surface of the pressing block, and the two ends of the groove-shaped cavity respectively pass through the two side surfaces of the pressing block. Two second cooling water channels parallel to the bottom of the groove-shaped cavity are provided on one side surface of the pressing block. At the same time, a connecting water channel connecting the two second cooling water channels at the same time is provided on the side surface of the pressing block and adjacent to the side surface where the second cooling water channel is provided, and a plug is provided at the port of the connecting water channel. The ends of the two second cooling water channels facing away from the connecting water channel are the second water inlet and the second water outlet, respectively. At the same time, a plurality of mounting holes are provided on the pressing block, and the clamping screws are connected to the motor cooler after passing through the mounting holes.

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