JP7231440B2 - Mobile humidity and temperature bath and test equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mobile constant-humidity and constant-temperature bath and test equipment used for testing the performance of automobiles, their drive system elements, and automobile components.

In the development of automobiles, when looking at the targets for measuring various performances, there are engine tests, vehicle tests, drive train (power train) tests, and the like. In the above-mentioned tests, the vehicle, engine, drive system element (bare chassis), etc. used as the test object are brought in, and the test object is operated and tested. etc. are installed, and the test is conducted in a test room that secures a measurement space where the person involved in the test monitors and controls. At least the work space in the test room is a facility that maintains the internal space surrounded by, for example, heat-insulating walls and soundproof walls under the environmental conditions (temperature, humidity, etc.) expected to be used by automobiles. Therefore, as a test facility, in addition to air-conditioning equipment to keep the internal space of the test room at the environmental conditions (temperature, humidity, etc.) that are assumed to be used in automobiles, measurement is performed by connecting a test piece that can respond to the above environmental conditions. A measuring instrument that can measure the Therefore, the operation console and panel equipment, which are vulnerable to extreme temperature conditions and sudden temperature changes, should be separated and installed in a room temperature environment where the testers involved in the test are present. Tests are conducted under the assumed environmental conditions in a test room where cables, pipes, etc. that supply utilities from the outside are installed. Test specimens that are tested under environmental conditions ranging from low to high temperatures and low to high humidity as environmental test chambers are mainly internal combustion engines and vehicles incorporating them. For the engine, which is smaller than the vehicle, the utility was connected and tested on an engine bench smaller than the vehicle, and in the case of the vehicle, the driving device was incorporated and the utility was also installed, and the environment was individualized with a chassis dynamometer.

However, due to the current revolution in motorization, electric motors have entered the drive train elements of automobiles, and the number of hybrid vehicles and electric vehicles has increased. A demand has arisen for performing equipment rearrangement while testing.

In addition, an engine dynamometer that measures the performance of the engine by connecting the test piece as an engine to the output shaft of the engine and applying a simulated load to the engine, and a vehicle with complete tires on the driving wheels of the test piece. On the other hand, chassis dynamometers, which measure the performance of the entire vehicle while imitating an endless road surface and applying a simulated load, have long been used in automobile development tests. With the addition of motors and electric motors, powertrain dynamometers have emerged, specializing in testing for the development of driveline elements.

When conducting a test simulating a low-temperature environment using such test equipment, first, it is necessary to cool the specimen. For example, the cooling of the test piece is performed by placing the test piece inside a test chamber, which is a large space, and then cooling the inside of the test chamber for a certain period of time, such as overnight. In other words, when cooling the specimen, it is necessary to cool the interior including the walls of the test room, which is a large space and a concrete frame with a large heat capacity. It costs more than necessary. In addition, each measuring section of the dynamometer of the power train and the simulated load section are vulnerable to thermal changes, and measures to isolate the effects of heat are very costly.

In this case, all the expensive powertrain dynamometers must be installed in the environmental chamber, and the points vulnerable to thermal fluctuations must be strictly insulated. In addition, the dynamometer for the power train will also be custom-made to handle temperatures other than room temperature.

As a method to reduce the cost of cooling the test specimen, for example, a car body cooler equipped with a cooler and a blower that supplies coolant from a cooling device installed outside the room to a support top plate suspended from the ceiling of the test room. A car body cooling means having It has been proposed to cool a test vehicle placed in an internal space surrounded by a vehicle body cooling means to a required test temperature (see Patent Document 1, for example).

Utility Model Registration No. 3014252

In the case of Patent Document 1, it is possible to cool the entire test vehicle to the required test temperature by cooling only the small internal space surrounded by the curtain and the vehicle placed there. The time required for cooling the test vehicle can be shortened. As a result, the cost for cooling can be suppressed.

However, in the case of Patent Document 1, by providing a vehicle body cooling means provided on a support top plate suspended from the ceiling of the test room, piping for flowing brine, chlorofluorocarbon refrigerant, etc. is installed on the support top plate. The cooling equipment in the test equipment is rather large-scale compared to the conventional equipment in which a cooling coil is installed in the middle of the blowing air passage simulating the vehicle speed to control the temperature of the air. Therefore, there is a demand for a simple system for cooling the specimen.

Further, in the case of Patent Document 1, the vehicle body cooling means and the roll-up curtain are fixed to a support top plate suspended from the ceiling of the test room, and an engine dynamometer, a chassis dynamometer, or a powertrain dynamometer is installed. If the test chamber is equipped with a fixed cooling system and the specimen is being cooled, the dynamometer will be occupied while cooling, so other specimens cannot be tested. There is a problem that the place to cool the specimen and the place to conduct the test are the same.

The present invention implements a cooling system that cools the specimen with a simple configuration, and instead of a large-scale environmental test room that air-conditions the entire test room, it is a set of air conditioning equipment that creates the test temperature and humidity conditions for the specimen and the specimen. , can be placed inside and on the top, making it possible to move, for example, using the measurement equipment installed in the room temperature test room, it is possible to test the test piece under predetermined temperature and humidity conditions. The purpose is to provide a mobile constant temperature and humidity bath and test equipment.

In order to solve the above-mentioned problems, the mobile constant-humidity-temperature bath of the present invention is composed of a plurality of heat-insulating panels and a frame, and includes drive train elements of a vehicle to be tested, and is connected to the drive shaft of an external measuring instrument. A structure having an internal space capable of installing a test sample, which is a bare chassis with a drive shaft at the end , a first frame on which the structure is placed, and an air conditioner placed on the upper part of the structure a reinforcing frame composed of a second frame for supporting the device; a connecting member for connecting the first frame and the second frame outside the structure ; The air conditioner capable of maintaining the internal space under a predetermined environmental condition, and at least one roller disposed at a plurality of locations on the bottom surface of the first frame of the reinforcing frame and rotating in a predetermined direction. a movement assisting device capable of assisting the movement of the structure, wherein the structure is inserted with the drive shaft of the external measuring device connected to the test object installed in the internal space. It has at least one or more openings, an entrance/exit door for entering and exiting the internal space, and a loading door for loading the test object into the internal space, and further constitutes a test object. A structure in which a holding stand that supports the propeller shaft and a fixed surface plate that holds the axle housing assembly are mechanically separated from the floor panel of the structure and supported by the first frame of the reinforcing frame. It is characterized by having it in the internal space of the body .

In addition, openings equal to or greater than the number of driving wheels are provided on the vertical surface of the heat insulating panel of the structure.

Here, it is preferable that the movement assisting device is a chill roller having a body portion that supports the at least one roller and has a receiving portion on which the structure is placed.

The chill roller includes a driven chill roller having a main body portion that supports the at least one roller and has a receiving portion on which the structure is placed, and a driving portion that rotates the at least one roller. is preferred.

Further, the test equipment of the present invention includes the above-described mobile constant-humidity and constant-temperature bath, and a measuring instrument connected to the specimen installed inside the structure from outside the structure through a drive shaft. and a test room in which the mobile constant-humidity-temperature bath and the measuring device are installed.

The test chamber can be moved between a first position where the mobile constant humidity and constant temperature bath is used and a second position where the mobile constant humidity and constant temperature bath is retracted from the first position. Preferably.

According to the present invention, the cooling system for cooling the specimen is implemented with a simple configuration, and the air conditioning that creates the test temperature and humidity conditions for the specimen and the specimen is not a large-scale environmental test room that air-conditions the entire test room. Since the entire set of equipment can be placed inside and on the top of the equipment and downsized, it is possible to test the specimen under the specified temperature and humidity conditions, for example, using the measurement equipment installed in the room temperature test room. It is possible to provide a mobile constant humidity and constant temperature bath and test equipment.

(a) is a perspective view showing an example of the configuration of the front side of the mobile constant humidity and constant temperature bath of the present embodiment, and (b) is a perspective view showing an example of the configuration of the rear side of the mobile constant humidity and constant temperature bath of the present invention. be. FIG. 4 is a perspective view showing an example of the structure of a reinforcing frame; FIG. 2 is a partial cross-sectional view showing an example of the configuration of the interior of a mobile constant-humidity and constant-temperature bath, the openings associated with the measuring equipment, and the configuration of the air conditioner used in the bath. It is explanatory drawing which shows the structure inside a mobile constant-humidity constant-temperature bath. 1 is a perspective view showing an example of a driven chill roller; FIG. It is a figure which shows an example of test equipment.

An example of the mobile constant-humidity-temperature bath 10 of the present invention will be described below. The mobile constant-humidity constant-temperature bath 10 of the present invention is a device that maintains the inside of a structure 15, which will be described later, under target environmental conditions (temperature and humidity). This mobile constant-humidity-temperature bath 10 is capable of installing and holding automobile components in its internal space. An example of an automobile component installed in the mobile constant-humidity-temperature bath 10 is a bare chassis. A bare chassis is a drive system element such as a transmission, propeller shaft, front wheel drive shaft, rear wheel side drive shaft, front wheel side differential differential, rear wheel side differential differential, etc. It is assembled to the body platform, which is the bottom chassis, and a temporary framework that imitates it. It should be noted that, depending on the type of driving of an automobile, drive system elements assembled as a bare chassis differ. Therefore, the above example of the drive system elements that make up the bare chassis is merely an example, and the bare chassis may not include the drive system elements on the front wheel side or the drive system elements on the rear wheel side. Hereinafter, an automobile component installed inside the mobile constant-humidity-temperature bath 10 is referred to as a test piece. In the bare chassis, each drive system element is brought into the mobile constant-humidity and temperature bath 10, and the vehicle body platform and its substitute are installed so that the drive elements are mutually correlated inside the mobile constant-humidity and temperature bath 10. Assembled in a framework.

As shown in FIGS. 1 to 4 , the mobile constant-humidity-temperature bath 10 has a structure 15 and a reinforcing frame 16 arranged outside the structure 15 . The structure 15 is formed by combining a plurality of heat insulating panels on each side in a box shape via a frame. The plurality of insulation panels includes insulation panels that form the front wall, the rear wall, the left wall, the right wall, the floor, and the ceiling. The heat insulating panel is a layered panel in which a galvalume steel plate is arranged on the exterior surface (front side) of a flat plate-shaped heat insulating material, and a stainless steel (SUS) plate is arranged on the back surface of the heat insulating material. Hereinafter, reference numeral 15a refers to the heat insulation panel that constitutes the front wall portion, reference numeral 15b refers to the heat insulation panel that constitutes the rear wall portion, reference numeral 15c refers to the heat insulation panel that constitutes the left wall portion, and constitutes the right wall portion. Reference numeral 15d is assigned to the heat insulating panel, reference numeral 15e is assigned to the heat insulating panel forming the floor portion, and reference numeral 15f is assigned to the heat insulating panel forming the ceiling portion.

The heat insulating panel 15a constituting the front wall portion has an opening 20 through which the drive shaft of an input dynamometer (or engine shaft) installed in a later-described test chamber 151 (outside the structure 15) is inserted into the structure 15. have Although illustration is omitted, when the drive shaft of the input dynamometer 165 installed in the test chamber 151 is inserted into the structure 15 through the opening 20, the drive shaft of the input dynamometer 165 and the opening 20 There is a gap between A heat insulating material such as AEROFLEX (registered trademark) is embedded in this gap so that the drive shaft of the input dynamometer can rotate freely.

The heat insulating panel 15a described above has, in addition to the opening 20, an opening 21 through which pipes for supplying oil and coolant for an automatic transmission are inserted, and openings 22 and 23 through which signal lines are inserted. These openings 21, 22, and 23 are embedded with a heat insulating material in a state in which pipes and signal lines are inserted.

The heat insulating panel 15b forming the rear wall is arranged at a position facing the heat insulating panel 15a forming the front wall. The heat insulating panel 15b has an opening/closing door 24 in the center. The opening/closing door 24 includes a door frame portion 24a and a door portion 24b, and the door portion 24b is pivoted to the door frame portion 24a via a hinge at one end side in the width direction of the door frame portion 24a. The opening/closing door 24 is opened when the driving system elements constituting the test piece are taken in and out of the structure 15 .

The heat insulating panel 15c forming the left side wall has openings 26 and 27 at both ends in the front-rear direction. A drive shaft of a left front wheel dynamometer 166 installed outside the structure 15 , which is connected to a left front wheel drive shaft, which is one of drive system elements assembled inside the structure 15 , is inserted through the opening 26 . The drive shaft of a left rear wheel dynamometer 167 that is similarly connected to the left rear wheel drive shaft is inserted through the opening 27 . The opening 27 is an elongated hole extending in the front-rear direction of the heat insulating panel 15c. By making the opening 27 an elongated hole, it is possible to install bare chassis of various automobiles having different wheel bases (distance between the front wheel axle and the rear wheel axle) inside the structure 15 . When the drive shaft of the left rear wheel dynamometer 167 connected to the left rear wheel drive shaft is inserted through the opening 27 , there is a gap in the opening 27 . A heat insulating material such as AEROFLEX (registered trademark), for example, is embedded in this gap so that the drive shaft of the left rear wheel dynamometer 167 can rotate freely.

In addition, the heat insulating panel 15c has an opening/closing door 29 in the central portion in the front-rear direction. The opening/closing door 29 includes a door frame portion 29a and a door portion 29b, and the door portion 29b is pivoted to the door frame portion 29a via a hinge at one end side in the width direction of the door frame portion 29a. The opening/closing door 29 is opened when a worker enters or leaves the structure 15 .

Furthermore, the heat insulating panel 15c has an operation panel 30 between the opening 26 and the opening/closing door 29 in the front-rear direction. The operation panel 30 performs input operations for managing the environmental conditions of the mobile constant-humidity-temperature bath 10 of this embodiment. The operation panel 30 is connected to a power control device 69 for an air conditioner, which will be described later. In addition, the operation panel 30 is a touch panel as an example.

The heat insulating panel 15d forming the right side wall is arranged at a position facing the heat insulating panel 15c forming the left side wall. The heat insulation panel 15d has openings 31 and 32 at both ends in the front-rear direction. These openings 31 and 32 are provided in the heat insulating panel 15d so as to be positioned at the same positions as the openings 26 and 27 of the heat insulating panel 15c forming the left side wall portion when the structure 15 is assembled. Through the opening 31 , the drive shaft of a right front wheel dynamometer 168 installed outside the structure 15 , which is connected to the right front wheel drive shaft, which is one of the drive system elements assembled inside the structure 15 , is inserted. A drive shaft of a right rear wheel dynamometer 169 that is similarly connected to a right rear wheel drive shaft is inserted through the opening 32 . Like the opening 27, the opening 32 is an elongated hole extending in the front-rear direction of the heat insulating panel 15c. When the drive shaft of the right rear wheel dynamometer 169 connected to the right rear wheel drive shaft is inserted through the opening 32 , there is a gap in the opening 32 . A heat insulating material such as AEROFLEX (registered trademark), for example, is embedded in this gap so that the drive shaft of the right rear wheel dynamometer 169 can rotate freely.

In addition, the heat insulating panel 15d has an opening/closing door 33 in the central portion in the front-rear direction. The opening/closing door 33 includes a door frame portion 33a and a door portion 33b, and the door portion 33b is pivoted to the door frame portion 33a via a hinge at one end side in the width direction of the door frame portion 33a. The opening/closing door 33 is opened when a worker enters or leaves the structure 15 .

The structure 15 has a holding stand 36 and a fixed platen 37 in the internal space that are supported by the frame while being mechanically separated from the heat insulating panel that constitutes the floor. In terms of heat, heat insulation is ensured due to the poor thermal conductivity of the heat insulation panels (walls, floors, and ceilings) and also because the gaps are filled with heat insulation. The holding stand 36 pivotally supports the propeller shaft that constitutes the bare chassis. The holding stand 36 is installed across two holding members 41 and 42 penetrating through the heat insulation panels 15c and 15d forming the left wall and right wall of the structure 15, respectively. The two holding members 41 and 42 are respectively supported by two frame members 55 forming a lower frame 51, which will be described later, at both ends protruding from the heat insulating panels 15c and 15d. Reference numeral 43 is installed on the two frame-constituting members 55 and supports both ends of the two holding members 41 and 42 while preventing heat bridging from the respective holding members 41 and 42 to the outer frame. It is a pedestal that is also a heat insulating material.

The fixed surface plate 37 is a member for holding a rear axle housing assembly in which rear wheel side drive system elements, such as a rear wheel side drive shaft and a rear wheel side differential differential, are assembled in the housing. The fixed surface plate 37 is installed across three holding members 44 , 45 , 46 penetrating through the heat insulating panels 15 c , 15 d forming the left wall and the right wall of the structure 15 . The three holding members 44, 45, and 46 are respectively supported by two frame-constituting members 55 constituting a lower frame 51, which will be described later, at both end portions protruding from the heat-insulating panels 15c and 15d. A reference numeral 47 is installed on the frame component member 55 and supports both ends of the three holding members 44, 45 and 46, and provides a heat bridge from each of the holding members 44, 45 and 46 to the outer frame. It is a pedestal that is also a heat insulator to prevent. The holding members 41, 42 and the holding members 44, 45, 46 described above are, for example, H-shaped steel. A two-dot chain line in FIG. 4 indicates an example of a specimen installed inside the structure 15 .

The reinforcing frame 16 comprises a lower frame (corresponding to the first frame in the claims) 51, an upper frame (corresponding to the second frame in the claims) 52, and four connecting members 53 connecting these frames 51 and 52. Configured. The lower frame 51 is a member on which the structure 15 is placed. The lower frame 51 is formed in a rectangular frame shape having long sides and short sides of two types of frame constituent members 55 and 56 having different lengths. Examples of these frame members 55 and 56 include H-section steel. In the lower frame 51, three reinforcing frame members 57 are arranged in parallel with the frame constituent member 56 between the two long side frame constituent members 55, 55 at regular intervals.

As with the lower frame 51, the upper frame 52 is formed in a rectangular frame shape having long sides and short sides of two types of frame constituent members 58 and 59 having different lengths. The size of the upper frame 52 and the size of the lower frame 51 are the same. As these frame constituent members 58 and 59, for example, H-section steel can be used.

The four connecting members 53 are members that connect the lower frame 51 and the upper frame 52 at the four corners of the lower frame 51 and the upper frame 52 . Here, the connecting member 53 is, for example, H-shaped steel.

A reinforcing member 61 is provided between the upper end portion of the front connecting member 53 of the four connecting members 53 and the frame component member 58 of the upper frame 52 . A reinforcing member 62 is provided between the lower end portion of the connecting member 53 located forward and the frame component member 55 of the lower frame 51 . Further, a reinforcing member 63 is provided between the upper end portion of the connecting member 53 positioned at the rear and the frame component member 58 of the upper frame 52 . Each of these four connecting members 53 has a grip portion 64 gripped by an operator in the front-rear direction of the mobile constant-humidity-temperature bath 10 .

An air conditioner 68 and a power control device 69 are arranged above the structure 15 described above. The air conditioner 68 is a device that maintains the air inside the structure 15 under predetermined environmental conditions. The environmental conditions inside the structure 15 set by the air conditioner 68 include, for example, a temperature range of -30°C to +50°C (±2°C) and a humidity range of 20% to 85% (at +10°C to 25°C). ).

The air conditioner 68 has a pre-filter 75 in a circulation path (chamber) 73 that connects an intake port 71 and a delivery port 72 provided in the heat insulating panel 15f that constitutes the ceiling, from the side of the suction port 71 toward the side of the delivery port 72. , a blower fan 76, a cooler 77, and a heater 78 are arranged in this order. Here, the chamber 73 is supported by the upper frame 52 via two support members 79 (see FIG. 1).

The pre-filter 75 removes solid particles contained in the air drawn into the chamber 73 by the blower fan 76 . The cooler 77 is, for example, a cooling coil such as a direct expansion coil (evaporator). The cooler 77 forms a refrigerating cycle together with a condenser and a compressor installed in a condensing unit 82 to be described later, an expansion valve in the vicinity of the cooler 77, and the like. The temperature and flow rate of the refrigerant flowing through the cooler 77 are controlled by controlling the rotation of the compressor and the expansion valve according to the deviation from the set temperature, and the temperature measured by the thermo-hygrometer 81 is set. The air sent into the chamber 73 is cooled to the desired temperature. The cooler 77 is connected to the condensing unit 82 and circulates a refrigerant such as Freon refrigerant between the cooler 77 and the condensing unit 82 . When the refrigerant is circulated between the cooler 77 and the condensing unit 82, the refrigerant absorbs heat in the cooler 77 corresponding to the evaporator, is compressed in the condensing unit 82, and then releases heat in the condenser.

The heater 78 is, for example, an electric heater. The heater 78 controls a thyristor or the like that increases or decreases the output of the electric heater according to the deviation between the temperature measured by the thermo-hygrometer 81 and the set temperature, so that the temperature measured by the thermo-hygrometer 81 is controlled. The air sent into the chamber 73 is heated so that the temperature becomes the set temperature.

Inside the chamber 73 described above, between the blower fan 76 and the cooler 77, an inlet 83a of a pipe 83 for sending dehumidified air into the chamber 73 is provided. The pipe 83 is connected to the air tank 100 . The pipe 83 is arranged in the order of a solenoid valve 84, a pre-filter 85, an air dryer 86, and a regulator valve (pressure reducing valve) 87 from the air tank 100 side. The solenoid valve 84 is activated when the humidity measured by the thermohygrometer 81 is higher than the set humidity, and sends the air from the air tank 100 toward the prefilter 85 . The pre-filter 85 removes solid particles contained in the air that is sent in when the solenoid valve 84 is open. The air dryer 86 operates when the electromagnetic valve 84 is opened to dry the air that is sent. A regulator valve 87 regulates the pressure of the air supplied to the interior of the chamber 73 and sends dry air into the interior of the chamber 73 .

A nozzle 88a of a humidifier 88 is arranged between the heater 78 and the delivery port 72 inside the chamber 73 described above. The humidifier 88 boils water in a kettle inside the main body installed outside the chamber 73, and discharges the generated low-pressure steam from a nozzle. It can be proportionally controlled by adjustment, and proportionally controlled according to the deviation between the humidity measured by the thermo-hygrometer 81 and the set humidity. The humidifier 88 supplies, for example, pure water supplied through the pure water filter 101 to the kettle in the main body of the humidifier 88, and a predetermined amount of humidified steam is supplied to the interior of the chamber 73 as low-pressure steam from the tip of the nozzle 88a. Supply and humidify.

The power control device 69 of the air conditioner receives an input operation from an operation panel 30 provided on the side of the structure 15 or an operation panel (not shown) provided inside the structure 15 (not shown), and operates as a mobile unit. Starts/stops and controls the air conditioner 68 of the constant-humidity and constant-temperature bath 10 . In addition, the power control device 69 may further incorporate a circuit for controlling the starting and stopping of the illumination device 90 and the monitoring camera 91 inside the structure 15 and operate them collectively.

The mobile constant-humidity and constant-temperature bath 10 of the present embodiment has mobile stands 95 and 96 at the four corners of the lower frame 51, for example. The carriages 95 and 96 are, for example, chill rollers. Here, the chill rollers 95 and 96 correspond to the movement assistance device in the claims. The chill roller 95 arranged on the front end side of the lower frame 51 is a driven chill roller. Examples of driven chill rollers include hydraulically driven chill rollers and electric chill rollers. On the other hand, the chill roller 96 arranged on the rear end side of the lower frame 51 may be a driven chill roller or a non-driven chill roller. In the following description, the driven chill roller used as the carriage 95 is denoted by reference numeral 95, and the non-driven chill roller used as the carriage 96 is denoted by 96. As shown in FIG.

As shown in FIG. 5, the driven chill roller 95 has, for example, two rollers 111 and 112, a body portion 113, a receiving portion 114, a drive portion 115 and a handle mounting portion . The two rollers 111 and 112 are axially supported by the main body 113 by strong rolling bearings (not shown) so that the two rollers 111 and 112 are axially parallel. For example, the body portion 113 has the drive portion 115 arranged on the side thereof and the receiving portion 114 arranged on the upper surface thereof. The receiving portion 114 mounts the lower frame 51 thereon. A drive unit 115 drives the two rollers 111 and 112 to rotate. As for the configuration of the drive unit 115, for example, the drive unit is equipped with gears as a booster and includes a handle and a ratchet for preventing reverse rotation, and the rotation of the handle is reduced by a damping gear of the drive unit to reduce the torque. A structure that rotates the central shafts of the rollers 111 and 112 by increasing the number of rollers 111 and 112. For example, a hydraulic drive unit is further added to the drive unit, and the degree of boost is adjusted by the opening of the control valve of the hydraulic drive unit by rotating the handle. The configuration of the drive unit 115, such as a configuration in which the central shafts of the rollers 111 and 112 are continuously rotated by the hydraulic pressure maintained by the rotary drive device (motor or engine) that maintains the hydraulic pressure, is similar to the drive type of the driven chill roller. determined based on When the driven chill roller 95 is hydraulically driven, it is easy to handle by linking the degree of inclination of the handle and the degree of opening of the control valve. may be driven.

The handle mounting portion 116 is composed of bearings 117 and 118 arranged at a predetermined interval, and a fixed shaft 119 pivotally supported across the bearings 117 and 118 . The handle mounting portion 116 pivotally supports the shaft mounting portion 122 of the handle 120 . As a method of supporting the shaft attachment portion 122 of the handle 120 in the handle attachment portion 116, the fixed shaft 119 supported across the bearings 117 and 118 is removed from the bearings 117 and 118, and the space between the bearings 117 and 118 is removed. Then, the fixed shaft 119 is supported by the bearings 117 and 118 with the shaft attachment portion 122 of the handle 120 inserted.

The handle 120 pivotally attached to the handle attachment portion 116 includes, for example, a grip portion 121, an axle attachment portion 122, and a connecting portion 123 that connects them. When moving the mobile constant-humidity and constant-temperature bath 10, the operator grips the grip portion 121 of the handle 120, converts the moment of vertical movement of the handle 120 into a small movement by the principle of leverage, and further rotates with the reduction gear of the driving portion 115. By increasing the torque, the rollers 111 and 112 rotate and move in the target direction little by little. Alternatively, when moving the mobile constant-humidity-temperature bath 10, the operator grips the grip portion 121 of the handle 120, and depending on whether the handle 120 is lowered or raised, the opening degree of the hydraulic control valve is coordinated. As the degree of movement increases, the hydraulic pressure is increased to increase the speed at which the rollers 111 and 112 rotate in the target direction.

Although illustration is omitted, the non-driven chill roller 96 differs from the driven chill roller 95 in that while the driven chill roller 95 has the driving portion 115, the non-driven chill roller 96 does not have a driving portion. Therefore, description of the non-driven chill roller 96 is omitted.

Here, it is determined by the weight distribution of the movable constant-humidity and constant-temperature bath 10 whether the moving tables 95 and 96 arranged at the four corners of the lower frame 51 are driven chill rollers or non-driven chill rollers. be. That is, the type of chill roller is determined so that the load is applied to the driven chill roller. Also, the number of wheels (rollers) that the chill rollers 95 and 96 have is appropriately set. Therefore, the rollers 111 and 112, whose frictional force is greatly reduced by the rolling bearings, are in line contact with the floor rather than in surface contact, thereby minimizing the frictional surface. The movable constant-humidity and constant-temperature bath 10 placed on 96 can be moved with a slight force. If the unitized chill rollers 95 and 96 are insufficient in force, the number of the chill rollers can be increased to facilitate movement by increasing the number of drive chill rollers.

An example of test equipment using the above-described mobile constant-humidity-temperature bath 10 will be described. As shown in FIG. 6, the test facility 150 has a test room 151 and a control room 152 . In addition, in FIG. 6, the control room 152 also serves as a measurement room. The test facility 150 is a facility for performing drivetrain tests and vehicle tests. A drivetrain test is a test that measures the performance and durability of a bare chassis in which each drivetrain element is assembled.

For example, in a drive train test, under the environmental conditions in the mobile constant humidity constant temperature chamber 10 that reproduces an environment somewhere in the world at a predetermined environmental temperature and humidity, the bare chassis at the time of stop is started and operated, One example of this is testing that measures the friction of system oil and changes over time in the operating conditions of the mechanical parts of the drive system and provides feedback for development.

The test chamber 151 has constant humidity and constant temperature performance. Although illustration is omitted, the test room 151 has an air conditioner, and the environmental conditions of the test room 151 can be set. The environmental conditions set by the air conditioner installed in the test chamber 151 may be the same as or different from the environmental conditions of the mobile constant-humidity-temperature bath 10 . When performing a drivetrain test using the mobile constant-humidity-temperature bath 10, the temperature of the test chamber 151 is set at 20 to 20 degrees centigrade in consideration of the comfort of the operator working outside the structure 15 inside the test chamber 151. It is set in the range of 30°C.

The above-described mobile constant-humidity and constant-temperature bath 10 is movably installed inside the test chamber 151 . The movable constant-humidity and constant-temperature bath 10 can be moved between a position (symbol 10) indicated by a solid line in FIG. 6 and a position (symbol 10') indicated by a two-dot chain line in FIG. The position indicated by the solid line in FIG. 6 is the position of the mobile constant-humidity-and-temperature bath 10 when a drive train test is performed on a test piece installed inside the mobile constant-humidity-temperature bath 10 (hereinafter referred to as the use position). is. In addition, the position indicated by the two-dot chain line in FIG. hereinafter referred to as the retracted position). Although illustration is omitted, the lower frame 51 of the reinforcing frame 16 constituting the mobile constant-humidity-temperature bath 10 has openings, for example, at four corners or in the vicinity thereof. By inserting it into the provided hole, it is positioned at the use position or the retracted position.

The test chamber 151 includes, in addition to the above-described mobile constant-humidity-temperature chamber 10, an input dynamometer 165, a left front wheel dynamometer 166, a left rear wheel dynamometer 167, a right front wheel dynamometer 168, and a right rear wheel dynamometer. It has a meter 169 . These dynamometers correspond to measuring instruments in the claims. Among these dynamometers, the input dynamometer 165, the left rear wheel dynamometer 167, and the right rear wheel dynamometer 169 are located at positions indicated by solid lines in FIG. ' and 169'). In other words, the left rear wheel dynamometer 167 and the right rear wheel dynamometer 169 can be moved according to the position of the rear wheel side drive system element installed as the test piece. Also, the test chamber 151 has an air tank 100 , a pure water filter 101 and a compressor 102 .

Although illustration is omitted in FIG. 6, when an electric vehicle or a hybrid vehicle is the object of the drive train test, a battery used for the electric vehicle or the hybrid vehicle may be installed inside the test chamber 151. It is possible.

Although illustration is omitted, the movement path of the input dynamometer 165 and the movement path of the mobile constant-humidity and constant-temperature bath 10 intersect. For example, when performing a vehicle test without using the mobile constant-humidity-temperature bath 10, it is necessary to move the mobile-type constant-humidity-temperature bath 10 from the use position to the retracted position. In this case, the following operations are performed.

First, the operator moves the input dynamometer 165 from the position indicated by the solid line in FIG. 6 to the position indicated by the two-dot chain line in FIG. After that, the operator attaches the handle 120 to each of the driven chill rollers 95 arranged at the two corners on the front end side of the mobile constant-humidity-temperature bath 10 . The two driven chill rollers 95 are driven by the two workers holding and tilting the handles 120 pivotally attached to the two driven chill rollers 95 . At this time, the direction of rotation of the two driven chill rollers 95 is the direction in which the movable constant-humidity and constant-temperature bath 10 is moved toward the retracted position. Each operator pulls the handle 120 toward the retracted position. At this time, the non-driven chill roller 96 becomes a driven chill roller. Since the driving type chill roller 95 is driven when the movable constant-humidity and constant temperature bath 10 is moved, two workers can move the movable constant-humidity and constant temperature bath 10 with little force. Therefore, there is no need for a large number of workers to move the mobile constant-humidity-temperature bath 10, and a small number of workers can carry out the work. After that, the vehicle is brought in, the four tires are removed, the vehicle is jacked up, and the drive shaft of the vehicle and the shaft of the dynamometer for each wheel are connected for testing.

If the input dynamometer 165 is used, the operator moves the input dynamometer 165 from the position indicated by the two-dot chain line in FIG. 6 to the position indicated by the solid line in FIG.

On the other hand, when using the mobile constant-humidity-temperature bath 10 to conduct a vehicle test or a test of a bare chassis assembled with drive train elements, it is necessary to move the mobile-type constant-humidity-temperature bath 10 from the retracted position to the use position. Also in this case, the operator attaches the handle 120 to each of the driven chill rollers 95 arranged at the two corners on the front end side of the mobile constant-humidity-temperature bath 10 . Two workers each grasp a handle 120 attached to the two driven chill rollers 95 to drive the driven chill rollers 95 respectively. At this time, the direction of rotation of the two rollers of the driven chill roller 95 is the direction in which the movable constant-humidity and constant-temperature bath 10 is moved toward the use position. Then, each operator pushes the handle 120 in a predetermined direction. At this time, since the driven chill roller 95 is driven, the two workers can move the mobile constant-humidity-temperature bath 10 with little force.

If all the chill rollers provided in the mobile constant-humidity-temperature bath 10 are drive-type chill rollers, when moving the mobile-type constant-humidity-temperature bath 10 from the retracted position to the use position, the movable constant-humidity-temperature bath 10 must be A handle 120 is attached to each of the driven chill rollers 95 arranged at the two corners on the rear end side to drive each of the driven chill rollers 95 . At this time, the direction of rotation of the two rollers of the driven chill roller 95 is the direction in which the movable constant-humidity and constant-temperature bath 10 is moved toward the use position.

After moving the mobile constant-humidity-temperature bath 10 from the retracted position to the use position, the operator moves the mobile-type constant-humidity-temperature bath 10 as a test piece for a vehicle test (in this case, a drive train test). installed inside the The operator inserts the drive shaft of the input dynamometer 165 through the opening 20 of the heat insulating panel 15a and connects it to the drive system element. The drive shaft of the front left wheel dynamometer 166 and the drive shaft of the left rear wheel dynamometer 167 are passed through the opening 26 and the opening 27 of the heat insulating panel 15c, respectively, and connected to the corresponding drive system elements. Further, the drive shaft of the right front wheel dynamometer 168 and the right rear wheel dynamometer 169 are inserted through the opening 31 and the opening 32 of the heat insulation panel 15d, respectively, and connected to the corresponding drive system elements. At this time, gaps are formed in the respective openings, and the gaps are filled with the heat insulating material described above. Finally, the operator operates the operation panel 30 to set environmental conditions for the drivetrain test. In response to this, the air conditioner 68 operates to maintain the inside of the structure 15 at the set environmental conditions (temperature and humidity). For example, when the set environmental condition is a cold environment, the inside of the structure 15 is cooled, and at the same time, the drive train element installed as the test piece is also cooled. Further, when the set environmental condition is a hot environment, the inside of the structure 15 is heated, and at the same time, the drive system elements are also heated.

By providing the mobile constant-humidity and constant-temperature bath 10 in the test room 151 in this way, the temperature and humidity of the test room 151 are not maintained at the set temperature and humidity, but the minimum temperature inside the structure 15 is maintained. It is only necessary to maintain the temperature and humidity within a limited range at the set temperature and humidity. Therefore, the facility for performing the drivetrain test on the driveline elements does not have to be a large-scale facility, and the above-described drivetrain test can be performed inside an existing building. In other words, although it is possible to use the mobile constant-humidity-temperature bath 10 as a test facility provided in the test chamber 151, the mobile-type constant-humidity-temperature bath 10 shown in this embodiment and the dynamometer or other measuring equipment can be combined. can be installed in any location, even in a room where a dynamometer is normally used for normal temperature testing, it is possible to easily switch to environmental testing in low-temperature and high-temperature fields. It becomes possible to conduct a test.

In addition, there is a through-hole in the mobile constant-humidity-temperature bath 10, through which the driving driven shaft for measurement of the measuring instrument can be penetrated from the outside. Since the dynamometer and other measuring instruments for performing are used at room temperature, it is possible to use general-purpose measuring instruments instead of measuring instruments corresponding to environmental conditions.

DESCRIPTION OF SYMBOLS 10... Mobile constant-humidity and constant-temperature bath, 15... Structure, 15a, 15b, 15c, 15d, 15e, 15f... Thermal insulation panel, 16... Reinforcement frame, 51... Lower frame, 52... Upper frame, 53... Connection member, 68 Air conditioner 95 Driven chill roller 96 Non-drive chill roller 150 Test facility 151 Test room 165 Input dynamometer 166 Left front wheel dynamometer 167 Left rear wheel dynamometer , 168... Dynamometer for right front wheel, 169... Dynamometer for right rear wheel

Claims (6)

An interior capable of installing a test specimen, which is a bare chassis consisting of multiple heat-insulating panels and frames , containing the driveline elements of the vehicle to be tested and ending with a drive shaft that connects to the drive shaft of an external measuring instrument. a structure having space;
a first frame on which the structure is placed; a second frame arranged on top of the structure and supporting an air conditioner; a reinforcing frame configured from connecting members that connect to each other;
the air conditioner installed in the second frame and capable of maintaining the internal space under a predetermined environmental condition;
a movement assisting device that is arranged at a plurality of locations on the bottom surface of the first frame of the reinforcing frame and has at least one roller that rotates in a predetermined direction so as to assist the movement of the structure;
with
The structure is
at least one or more openings through which the drive shaft of the external measuring instrument connected to the test piece installed in the internal space is inserted;
an entry/exit door for entering/exiting the internal space;
a loading door for loading the specimen into the internal space;
has
Furthermore, the holding stand for pivotally supporting the propeller shaft that constitutes the test piece, and the fixed surface plate for holding the axle housing assembly are mechanically separated from the floor panel of the structure to form the first reinforcement frame. supported by the frame of the structure and held in the internal space of the structure
A mobile constant-humidity-temperature bath characterized by: In the mobile constant-humidity-temperature bath according to claim 1,
The vertical surface of the insulation panel of the structure has at least as many openings as the driving wheels.
A mobile constant-humidity-temperature bath characterized by: In the mobile constant-humidity-temperature bath according to claim 1 or claim 2,
The movable constant-humidity constant-temperature bath, wherein the movement assisting device is a chill roller having a main body portion that axially supports the at least one roller and has a receiving portion on which the structure is placed. In the mobile constant-humidity-temperature bath according to claim 3,
The chill roller includes a driven chill roller having a main body portion that pivotally supports the at least one roller and has a receiving portion on which the structure is placed, and a driving portion that rotates the at least one roller. Characteristic mobile constant temperature and humidity bath. The mobile constant-humidity-temperature bath according to any one of claims 1 to 4 ;
a measuring instrument connected to the specimen installed inside the structure from outside the structure via a drive shaft ;
a test room in which the mobile constant-humidity-temperature bath and the measuring device are installed;
A test facility comprising: In the test equipment according to claim 5 ,
The test chamber can be moved between a first position where the movable constant-humidity and constant-temperature bath is used and a second position where the movable constant-humidity and constant-temperature bath is retracted from the first position. A testing facility characterized by

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