CN113029578B

CN113029578B - Engine testing device and testing method thereof

Info

Publication number: CN113029578B
Application number: CN202110466335.2A
Authority: CN
Inventors: 沈小平; 张育俊
Original assignee: Hangzhou Crode Electromechanical Equipment Co ltd
Current assignee: Hangzhou Crode Electromechanical Equipment Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2022-08-09
Anticipated expiration: 2041-04-28
Also published as: CN113029578A

Abstract

The application discloses an engine testing device and a testing method thereof, and the engine testing device comprises a quick-mounting trolley, centering equipment and a rack, wherein the quick-mounting trolley comprises a bottom plate, four supporting structures are movably arranged on the bottom plate, the engine testing device also comprises a controller, four corners of the engine are respectively provided with a positioner, and the supporting structures are provided with an inductor matched with the positioner; the positioner is used for continuously sending induction signals to one side of the bottom plate; the sensor is used for receiving the induction signal and responding to the induction signal to transmit a matching signal to the controller; the controller is used for controlling the supporting structure to move on the bottom plate and stopping moving the supporting structure after receiving the matching signal. In the process of installing the engine in the quick-mounting trolley, workers do not need to manually adjust the position of the supporting structure, the supporting structure can automatically support the engine, the position of the engine can be automatically adjusted in subsequent centering adjustment, the workload of the workers is further reduced, and the engine is more convenient to install.

Description

Engine testing device and testing method thereof

Technical Field

The application relates to the field of engine testing, in particular to an engine testing device and a testing method thereof.

Background

The engine test need be placed on special rack to need be connected water pipe, oil pipe and electric wire between engine and the rack, lead to installation and subsequent dismantlement work loaded down with trivial details, cause serious influence to the whole efficiency of software testing of rack.

In order to improve the testing efficiency of the rack, the quick-assembly trolley is adopted for transferring, an engine to be tested is firstly installed on the quick-assembly trolley, the quick-assembly trolley is connected with various pipelines, then the quick-assembly trolley is centered and debugged and then moved onto the rack, and the pipeline connection between the rack and the quick-assembly trolley is quickly completed through a quick connector, so that the installation time of the engine on the rack is shortened.

The engine and the rack are mounted, the engine is hoisted and placed into the quick-mounting trolley from top to bottom, four supporting structures are arranged in the quick-mounting trolley and used for supporting the engine, each supporting structure can move in the horizontal direction and can be adjusted in the vertical direction, and the engine and the rack are used for adapting to engines of different body types.

To the correlation technique among the above-mentioned, when carrying out bearing structure debugging, need staff's manual regulation bearing structure's position, consuming time is hard again to in this adjustment process, the engine is in the bearing structure top through the hoist and mount always, has certain hidden danger to staff's personal safety.

Disclosure of Invention

In order to enable the engine to be more conveniently installed on the quick-mounting trolley, the application provides an engine testing device and an engine testing method.

In a first aspect, the present application provides an engine testing apparatus, which adopts the following technical scheme:

an engine testing device comprises a fast-assembling trolley for mounting an engine, centering equipment for centering and adjusting the engine and a rack for testing the engine, wherein the fast-assembling trolley comprises a bottom plate, four supporting structures are movably arranged on the bottom plate,

the engine is characterized by further comprising a controller, wherein the positioners are mounted at four corners of the engine, and the sensors matched with the positioners are mounted on the supporting structure;

the locator is used for continuously sending induction signals to one side of the bottom plate;

the sensor is used for receiving the sensing signal and responding to the sensing signal so as to transmit a matching signal to the controller;

and the controller is used for controlling the support structure to move on the bottom plate so that the sensor is positioned right below the positioner, and stopping moving the support structure after receiving the matching signal.

Through adopting above-mentioned technical scheme, at the in-process of installing the engine in the fast-assembling dolly, the staff need not the position of manual regulation bearing structure, but accomplishes bearing structure's position adjustment through automatic control's mode, utilizes locator and inductor to carry out accurate location for bearing structure can the automatic support engine, and accomplish the adjustment of engine position in follow-up centering adjustment voluntarily, further alleviate staff's work load, make engine installation work more convenient.

Optionally, the system further comprises a database, wherein the model of the engine and the distance between each locator on the corresponding engine are prestored in the database;

and the controller is used for acquiring the distance between each locator on the corresponding engine from the database based on the model of the manually input engine, and adjusting the positions of the rest supporting structures according to the distance between each locator and the position of the stopped supporting structure after the matching signal is received for the first time.

By adopting the technical scheme, the position adjustment of one supporting structure is firstly completed in a targeted manner, and after the position of the supporting structure is determined, the position adjustment of other supporting structures can be quickly completed according to the pre-stored data, so that the adjustment of the supporting structure is more convenient, and the energy consumption can be saved.

Optionally, bearing structure is including the seat of sliding, lifting unit and the supporting seat that is used for supporting the engine, the seat sliding connection that slides is on the bottom plate, lifting unit installs on the seat of sliding and control supporting seat along vertical direction lift, the inductor is installed on the supporting seat.

Through above-mentioned technical scheme, bearing structure finishes at the horizontal direction adjustment back, need not the engine removal of hoist and mount state, but has lifting unit drive supporting seat rebound to support the engine, avoids the engine to appear rocking and influence the location of accomplishing the matching, further improves positioning accuracy.

Optionally, the sliding seats are provided with brackets, the brackets are hinged with balance plates, the balance plates are always in a horizontal state, and the supporting seats are provided with distance measuring devices corresponding to the balance plates;

the distance measuring device is used for detecting the vertical distance of the corresponding balance plate and outputting corresponding distance information;

and the controller is used for acquiring the distance signal transmitted by the current distance meter after receiving the matching signals transmitted by all the inductors, recording the distance signal as initial distance information, acquiring the distance information output by the current distance meter based on manual operation to check the distance information with the initial distance information, and controlling the lifting assembly to work to enable the current distance information to be recovered to be consistent with the initial distance information if the current distance information is inconsistent with the initial distance information.

Through adopting above-mentioned technical scheme, no matter whether the ground that fast-assembling dolly contacted is level, the balance plate homoenergetic keeps the horizontality, but the distancer can receive the influence of contact ground flatness, this just makes can experience ground flatness when the distance information that the distancer detected changes and has the difference, and the position through bearing structure changes, make distance information resume initial distance information, can make the output shaft of engine resume the horizontality again, follow-up only need go up the fine setting in vertical direction can, also can shorten the alignment time when improving centering precision.

Optionally, the controller further obtains the number of the stand based on manual operation to bind with the current distance information, and updates the number of the stand to the database to correspond to the corresponding engine model.

By adopting the technical scheme, when the subsequent engines of the same type are tested on the rack of the same number, the final distance information can be directly called from the database, and the debugging of the engine position can be rapidly completed, so that the centering adjustment link is skipped, and the time spent in the engine installation process is further shortened.

Optionally, the supporting seat is rotatably connected with a bidirectional screw rod, two ends of the bidirectional screw rod are respectively in threaded connection with two sliding blocks, the supporting seat is further provided with a fourth motor for driving the bidirectional screw rod to rotate, and four corners of the engine are provided with positioning holes for the sliding blocks to pass through.

Through adopting above-mentioned technical scheme, the in-process that the supporting seat is connected with the engine, the slider on the same supporting seat is at first close to each other so that pass the locating hole of corresponding position on the engine, then rotates two-way lead screw for two sliders are kept away from each other in order to contradict respectively at the both sides lateral wall of locating hole, play the effect of pressing from both sides tight engine.

In a second aspect, the present application provides an engine testing method, which adopts the following technical scheme:

an engine test method is applied to an engine test device and comprises the following steps:

hoisting an engine to be tested into a fast-assembling trolley;

moving the support structure to adjust the position of the support structure and the engine, and stopping movement of the corresponding support structure based on the match signal,

lifting the support structure to support the engine after receiving the four matching signals;

controlling all the supporting structures to move synchronously to complete centering adjustment of the engine and the centering equipment;

and after the centering adjustment is finished, the fast-assembling trolley is installed on the rack to test the engine.

Optionally, the specific method for moving the support structure to adjust the positions of the support structure and the engine includes:

the distance between each locator is obtained based on manual input of the model of the engine, and after any group of sensing devices are paired, the positions of the rest of the supporting structures are adjusted according to the distance between the locators to rapidly complete pairing of the rest of the sensing devices.

Optionally, after the centering adjustment of the engine is completed, recording the vertical distance from the distance meter to the corresponding balance plate as initial distance information; after the fast-assembling dolly is installed on the rack, whether the current distance information is consistent with the initial distance information or not is judged, if not, the current distance information is recovered to the initial distance information through the lifting support structure, and then the lifting support structure is synchronously lifted to realize the centering of the engine and the rack.

In summary, the present application includes at least one of the following beneficial technical effects: install the fast-assembling dolly from the engine and carry out centering adjustment and final fine setting on the rack to the engine, all accomplish automatically, save staff's work load to the adjustment speed is fast, can effectively reduce the adjustment time of engine, improves the test efficiency of rack to the engine from another angle.

Drawings

Fig. 1 is a block diagram of the overall structure of the embodiment of the present application.

FIG. 2 is a schematic view of the overall structure of the quick-loading trolley according to the embodiment of the application.

FIG. 3 is a schematic partial structural view of a quick-assembly cart according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a support structure according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of the engine of the embodiment of the application after being mounted on the quick-mounting trolley.

Fig. 6 is an enlarged view at a in fig. 5.

FIG. 7 is a schematic structural view of the quick-loading trolley of the embodiment of the application when the quick-loading trolley is mounted on a rack.

FIG. 8 is a flow chart of steps in an embodiment of the present application.

Description of reference numerals: 1. quickly mounting the trolley; 11. a base plate; 12. a mounting frame; 121. a rectangular connector; 122. an intercooler; 123. an oil filling unit; 2. a rack; 21. a dynamometer; 22. a detector; 3. a controller; 4. a database; 5. a support structure; 51. a sliding seat; 511. a support; 512. a balance plate; 52. a lifting assembly; 521. a third motor; 522. a third screw rod; 523. a vertical support plate; 53. a supporting seat; 531. a slider; 532. a bidirectional screw rod; 533. a fourth motor; 534. an inductor; 535. a connecting frame; 536. a range finder; 6. a drive assembly; 61. a first motor; 62. a first lead screw; 7. a slide base; 71. a second lead screw; 72. a second motor; 8. a support leg; 81. positioning holes; 82. a positioner; 9. a detector.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses an engine testing device, and with reference to fig. 1 and 2, the engine testing device comprises a fast-assembling trolley 1, centering equipment and a rack 2. The fast-assembling trolley 1 comprises a bottom plate 11 and a mounting rack 12 built along the circumferential edge of the bottom plate 11, wherein a rectangular connector 121, an intercooler 122, an oil filling unit 123 and a controller 3 are fixed on the mounting rack 12. Four supporting structures 5 are connected to the bottom plate 11 in a sliding manner, a driving assembly 6 for driving the supporting structures 5 to move is further arranged on the bottom plate 11, and the controller 3 is used for controlling the driving assembly 6 to adjust the position of the supporting structures 5.

After the supporting structure 5 is moved in place, the engine is fixed on the supporting structure 5, the quick-mounting trolley 1 is close to the centering device, the centering device detects the position of an output shaft of the engine and gives debugging data, and the controller 3 adjusts the position of the supporting structure 5 for the second time through the debugging data, so that the engine completes centering adjustment. After debugging, the rectangular connector 121, the intercooler 122 and the oil filling unit 123 are connected with the engine respectively, wherein the rectangular connector 121 is connected with the engine through an electric wire, the intercooler 122 is connected with the engine through a water pipe, and the oil filling unit 123 is connected with the engine through an oil pipe. It should be noted that, the corresponding connectors on the water pipe, the oil pipeline and the engine all need to adopt a small section of hose to connect, and the setting of hose can reduce the required precision on shape, length to water pipe, oil pipeline on the one hand, and on the other hand also is in order to leave the space of little range debugging for the engine. And finally, moving the fast-assembling trolley 1 to the rack 2 and carrying out final fine adjustment. After all the tests are finished, the engine can be tested on the bench 2, the dynamometer 21 is installed on the bench 2, one of the engine tests is to measure the power of the engine through the dynamometer 21, and before the test is carried out, the output shaft of the engine needs to be in butt joint with the dynamometer 21, so that the centering of the engine needs to be finished in advance by using centering equipment outside the bench 2, and the installation and debugging time spent on the bench 2 is further reduced.

Referring to fig. 2 and 3, the driving assembly 6 includes two first motors 61 and two first lead screws 62, the two first lead screws 62 are disposed along the length direction of the bottom plate 11 and are all rotatably connected to the bottom plate 11, the two first motors 61 are all fixed at one end of the bottom plate 11 and respectively correspond to the two first lead screws 62, and the output shafts of the first motors 61 are coaxially connected to the corresponding first lead screws 62. The bottom plate 11 is further connected with two sliding seats 7 in a sliding manner, the length direction of the sliding seats 7 is perpendicular to the length direction of the first screw rod 62, and the sliding direction of the sliding seats 7 is the same as the length direction of the first screw rod 62. The two first lead screws 62 correspond to the two slide bases 7 respectively, and the first lead screws 62 are connected to the corresponding slide bases 7 in a threaded manner. Every slide 7 corresponds with two bearing structure 5 respectively, and bearing structure 5 sliding connection is on corresponding slide 7, and bearing structure 5's slip direction is the same with the length direction of slide 7, rotates on slide 7 and is connected with two second lead screws 71, and two second lead screws 71 set gradually along the length direction of slide 7, and two second lead screws 71 are threaded connection respectively on two bearing structure 5 on corresponding slide 7. A second motor 72 is fixed at both ends of the sliding base 7, and the output shaft of the second motor 72 is coaxially connected with the adjacent second screw rod 71. The controller 3 controls the on/off and the steering of the first motor 61 and the second motor 72.

The control principle of the controller 3 for the first motor 61 and the second motor 72 may be different depending on the mounting state of the engine. When the engine is in a hoisting state, the support structure 5 needs to be moved to the position below the engine, and the first motor 61 and the second motor 72 are controlled by the auxiliary operator controller 3, so that the support structure 5 can be rapidly moved in place. The centering adjustment and the fine adjustment on the gantry 2 are performed by the controller 3 automatically controlling the operation of the first motor 61 and the second motor 72 according to the detected data.

Referring to fig. 2 and 3, the supporting structure 5 includes a sliding seat 51, a lifting assembly 52 and a supporting seat 53, and the lifting assembly 52 includes a third motor 521, a third screw 522 and a vertical supporting plate 523. The sliding seat 51 is connected to the sliding seat 7 in a sliding manner, the vertical support plate 523 is fixed to the sliding seat 51 along the vertical direction, and the third screw 522 is connected to the vertical support plate 523 in a rotating manner and is arranged along the vertical direction. The third motor 521 is fixed on the sliding seat 51, and an output shaft of the third motor 521 is coaxially connected with the third screw rod 522. One end of the support seat 53 is slidably connected to the vertical support plate 523, and the other end of the support seat 53 extends to a side away from the connected vertical support plate 523 along the horizontal direction. The third screw 522 is screwed to the end of the support base 53 near the vertical support plate 523. The supporting seat 53 is provided with a positioning column on the surface departing from the bottom plate 11, the positioning column comprises two sliders 531, the two sliders 531 are connected to the supporting seat 53 in a sliding mode, the sliding directions of the two sliders 531 are the same, and when the two sliders 531 are close to each other and contact with each other, the end portions, far away from the supporting seat 53, of the two sliders 531 jointly form a columnar protruding block. The supporting seat 53 is rotatably connected with a bidirectional screw rod 532, the length direction of the bidirectional screw rod 532 is parallel to the sliding direction of the sliders 531, two ends of the bidirectional screw rod 532 are respectively in threaded connection with the two sliders 531, and the supporting seat 53 is further provided with a fourth motor 533 for driving the bidirectional screw rod 532 to rotate.

The position of the support base 53 in the horizontal direction is changed by the cooperation of the slide base 7 and the slide base 51, and the position of the support base 53 in the vertical direction is changed by the rotation of the third screw 522, so that the support base 53 can be suitable for supporting engines of different models. The controller 3 is also used for controlling the on/off and the steering of the third motor 521 during operation.

Referring to fig. 3 and 4, each sliding seat 51 is provided with a bracket 511, the bracket 511 is hinged with a balance plate 512, and the center of gravity of the balance plate 512 is located right above the middle position of a hinge shaft of the balance plate 512, so that the balance plate 512 is in a horizontal state under the action of self gravity, and even if the balance plate 512 rotates under the action of external force, the balance plate 512 can automatically return to the horizontal state after the external force is lost. The sensor 534 and the connecting frame 535 are fixed on the supporting seat 53, the end of the connecting frame 535 far away from the supporting seat 53 is hinged with a distance meter 536, the distance meter 536 is positioned right above the balance plate 512 on the same supporting structure 5, and the probe of the distance meter 536 is always vertically arranged downwards under the action of self gravity. The probe of range finder 536 projects vertically onto balance board 512 with the probe projection of range finder 536 on the side of the hinge location of balance board 512. The range finder 536 is an ultrasonic range finder 536, the probe of the range finder 536 emits ultrasonic waves, the ultrasonic waves are reflected back to the range finder 536 after contacting the balance board 512, and the range finder 536 calculates the distance between the balance board 512 and the range finder 536 according to the time from the emission of the ultrasonic waves to the reception of the echo and outputs corresponding distance information.

Referring to fig. 5 and 6, in order to cooperate with the quick-assembly trolley 1, four detachable support legs 8 are installed at the bottom of the engine, positioning holes 81 matched with the positioning columns are formed in the support legs 8, and the cross sections of the positioning holes 81 are larger than that of the columnar protrusions, so that the positioning columns can penetrate through the positioning holes 81. And one side of stabilizer blade 8 is fixed with locator 82, and four locators 82 respectively with four inductor 534 one-to-one, locator 82 and corresponding inductor 534 make up into induction system. The positioner 82 is configured to send a sensing signal to the corresponding sensor 534. In the present embodiment, the positioner 82 is an infrared emitter, the emitting end of the positioner 82 is disposed vertically downward, and the sensor 534 is a corresponding infrared receiver, and the receiving end of the sensor 534 is disposed vertically upward. When the sensor 534 receives the infrared signal from the locator 82, the sensor 534 generates a matching signal.

In addition, in order to realize fine adjustment on the rack 2, referring to fig. 6 and 7, the end part of the output shaft on the engine is provided with the detector 9, the rack 2 is provided with the detector 22 corresponding to the detector 9, the detector 9 can be an infrared emitter, and then the detector 22 is an infrared receiver; the detector 9 may also be a laser transmitter and the detector 22 is then a corresponding laser receiver. No matter what way the detector 9 and the detector 22 transmit the signals, as long as the detector 22 can receive the signals sent by the detector 9, it can indicate that the engine and the gantry 2 are aligned at the moment.

Referring to fig. 1, the system further comprises a database 4, the database 4 may be built in a computer room, and the controller 3 accesses the database 4 by means of wireless connection. The database 4 is pre-stored with the engine model and the distance between each locator 82 on the corresponding engine. The controller 3 obtains the distances between the respective locators 82 on the corresponding engine from the database 4 based on the model number of the manually input engine. When the controller 3 controls the supporting structure 5 to move in the horizontal direction based on manual operation, at this time, the controller 3 only needs to move one supporting structure 5, so that one sensing device completes pairing, and after the matching signal is received for the first time, the controller 3 adjusts the positions of the rest sliding seats 51 according to the distance between the positioners 82 and the position of the sliding seat 51 which completes pairing.

The centering equipment is provided with a laser centering instrument, and when the quick-mounting trolley 1 is in butt joint with the centering equipment, the laser centering instrument automatically detects the position deviation between the engine output shaft and the centering equipment and forms corresponding adjusting data. The controller 3 receives the adjustment data and controls the actuation of the respective first motor 61, second motor 72 and third motor 521 in accordance with the adjustment data to change the position of the support structure 5 to align the output shaft of the engine with the centering device. After the centering adjustment is completed, the controller 3 acquires the distance information measured by each of the distance meters 536, integrates the distance information together and names the distance information as initial distance information, and the controller 3 temporarily stores the initial distance information in the database 4.

When the quick-loading trolley 1 is mounted on the gantry 2, the controller 3 continuously obtains the vertical distance detected by each distance meter 536 based on manual operation and records the vertical distance as the current distance information. The controller 3 retrieves the initial distance information in the database 4 and compares it with the current distance information. When the current distance information is inconsistent with the corresponding initial distance information, the controller 3 controls the corresponding third motor 521 to operate so that the current distance information is restored to be consistent with the initial distance information. When all the current distance information is consistent with the corresponding initial distance information, the controller 3 controls the third motor 521 to start based on manual operation, the worker is mainly used for determining the rotation direction of the third motor 521, when the support structure 5 drives the engine to move in the vertical direction, once the detector 9 is opposite to the detector 22, the controller 3 stops the operation of the third motor 521, at the moment, the controller 3 obtains the current distance information, then the current distance information, the rack number and the engine model are bound together and updated to the database 4, and the rack number is manually recorded by the worker. When the next engine with the same model is tested on the same rack 2, the controller 3 can directly adjust the position of the engine according to the corresponding current distance information, and the link of centering adjustment is skipped. Of course, after the engine is mounted on the gantry 2, it is necessary to determine whether the engine is in place according to the detector 9 and the detector 22, and if not, the engine is adjusted again with the assistance of a human, and the adjusted data is updated to the database 4 again.

The embodiment of the application also discloses an engine testing method, which is shown in fig. 8 and comprises the following steps:

and supporting legs 8 are arranged at four corners of the bottom of the engine to be tested, and the engine is hoisted into the quick-mounting trolley 1 from top to bottom. Before the supporting structure 5 finishes position adjustment, the engine is in a hoisting state, the bottom surfaces of the four support legs 8 in the hoisting state are as horizontal as possible, and the output shaft of the engine is perpendicular to the side surface of one side of the mounting frame 12 along the horizontal direction as much as possible, so that the subsequent supporting structure 5 is conveniently connected with the engine. The controller 3 acquires the distances between the respective locators 82 on the model engine from the database 4 based on the manually input engine model.

The controller 3 controls the first motor 61 and the second motor 72 to be activated to drive one of the supporting structures 5 to move in the horizontal direction based on manual operation, wherein the manual operation is to determine the rotating directions of the first motor 61 and the second motor 72 by observing the position relationship between the supporting structure 5 and the engine by a worker so as to increase the speed of moving the supporting structure 5 to be right below the corresponding support leg 8 of the engine. When the supporting structure 5 moves to a position right below the corresponding supporting leg 8, the sensor 534 on the supporting structure 5 is opposite to the positioner 82 on the supporting leg 8, the corresponding sensor 534 transmits a matching signal to the controller 3, and the controller 3 adjusts the positions of the rest of the sliding seats 51 according to the distance between the positioners 82 and the position of the first moving sliding seat 51 when receiving the matching signal for the first time.

After the controller 3 receives the four matching signals, the controller 3 controls all the third motors 521 to work again, so that the supporting seats 53 move upwards synchronously, the positioning columns on the supporting seats 53 penetrate through the positioning holes 81 on the corresponding supporting legs 8 respectively, and the supporting glue is supported on the corresponding supporting seats 53. Then, the controller 3 controls the fourth motor 533 to work, the two sliders 531 are separated from each other by the rotation of the bidirectional screw rod 532, and the two sliders 531 abut against the sidewalls of the two sides of the positioning hole 81 respectively to achieve the fixed connection between the engine and the supporting seat 53.

And (3) enabling the quick-assembly trolley 1 to be close to the centering equipment, fixing the quick-assembly trolley 1, installing a laser centering instrument on the engine and the centering equipment, measuring the position deviation between the output shaft of the engine and the centering equipment through the laser centering instrument, and outputting corresponding adjustment data.

And the controller 3 adjusts the position of the engine in the quick-mounting trolley 1 according to the adjustment data, so that centering adjustment is completed. After the centering adjustment of the engine is completed, the controller 3 records the vertical distance from the range finder 536 to the corresponding balance board 512, names the vertical distance with the initial distance information, and temporarily stores the named vertical distance information in the database 4.

After the centering adjustment is finished, the fast-assembling trolley 1 is installed on the rack 2, and the output shaft of the engine faces one side of the dynamometer 21. The controller 3 acquires the current distance information from the rangefinder 536 and determines whether the current distance information coincides with the initial distance information. If the distance information is inconsistent with the original distance information, the current distance information is recovered to the original distance information through the lifting support structure 5, the lifting support structure 5 is synchronously lifted again to realize the centering of the engine and the dynamometer 21, and the judgment of whether the centering is carried out is determined by whether the detector 22 receives a signal transmitted by the detector 22.

After the fast-assembling trolley 1 is aligned with the rack 2, the controller 3 acquires the current distance information again, corresponds the current distance information, the current rack number and the current engine model one by one, and updates the current distance information, the current rack number and the current engine model into the database 4.

After all adjustments are completed, the dynamometer 21 is pushed to approach the engine, so that the output shaft of the dynamometer 21 is connected with the output shaft of the engine, and the engine can be tested.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An engine testing device, characterized in that: comprises a fast-assembling trolley (1) for mounting an engine, centering equipment for centering and adjusting the engine and a rack (2) for testing the engine, wherein the fast-assembling trolley (1) comprises a bottom plate (11), four supporting structures (5) are movably arranged on the bottom plate (11),

the engine is characterized by further comprising a controller (3), wherein locators (82) are mounted at four corners of the engine, and inductors (534) matched with the locators (82) are mounted on the supporting structure (5);

a positioner (82) for continuously transmitting the induction signal to the side of the bottom plate (11);

a sensor (534) for receiving the sensing signal and transmitting a matching signal to the controller (3) in response to the sensing signal;

a controller (3) for controlling the movement of the support structure (5) on the base plate (11) so that the sensor (534) is located directly below the positioner (82), and for stopping the movement of the support structure (5) upon receiving the matching signal;

the system also comprises a database (4), wherein the model of the engine and the distance between each locator (82) on the corresponding engine are prestored in the database (4);

and the controller (3) is used for acquiring the distance between each locator (82) on the corresponding engine from the database (4) based on the model of the manually input engine, and adjusting the positions of the rest support structures (5) according to the distance between each locator (82) and the position of the support structure (5) which stops moving after receiving the matching signal for the first time.

2. The engine testing device according to claim 1, characterized in that: support structure (5) including seat (51), lifting unit (52) and support seat (53) that are used for supporting the engine that slide, seat (51) sliding connection slides on bottom plate (11), lifting unit (52) are installed and are gone up and down along vertical direction on seat (51) that slides and control support seat (53), inductor (534) are installed on support seat (53).

3. The engine testing device according to claim 2, characterized in that: the sliding seats (51) are provided with brackets (511), the brackets (511) are hinged with balance plates (512), the balance plates (512) are always in a horizontal state, and the supporting seat (53) is provided with a distance meter (536) corresponding to the balance plates (512);

a range finder (536) for detecting a vertical distance of the corresponding balance board (512) and outputting corresponding distance information;

and the controller (3) is used for acquiring the distance signal transmitted by the current range finder (536) after receiving the matching signals transmitted by all the sensors (534) and recording the distance signal as initial distance information, acquiring the distance information output by the current range finder (536) based on manual operation to check the distance information with the initial distance information, and if the current distance information is inconsistent with the initial distance information, the controller (3) controls the lifting assembly (52) to work so that the current distance information is recovered to be consistent with the initial distance information.

4. The engine testing apparatus according to claim 3, characterized in that: and the controller (3) also acquires the number of the rack (2) based on manual operation to be bound with the current distance information, and updates the number into the database (4) to correspond to the corresponding engine model.

5. The engine testing device according to claim 2, characterized in that: the motor is characterized in that the supporting seat (53) is rotatably connected with a bidirectional screw rod (532), two ends of the bidirectional screw rod (532) are respectively in threaded connection with two sliding blocks (531), the supporting seat (53) is further provided with a fourth motor (533) used for driving the bidirectional screw rod (532) to rotate, and four corners of the motor are provided with positioning holes (61) for the sliding blocks (531) to pass through.

6. An engine test method applied to an engine test apparatus according to any one of claims 1 to 5, characterized by comprising the steps of:

hoisting an engine to be tested into the fast-assembling trolley (1);

moving the support structure (5) to adjust the position of the support structure (5) and the engine and stopping the movement of the corresponding support structure (5) based on the matching signal,

raising the support structure (5) to support the engine after receiving the four matching signals;

controlling all the supporting structures (5) to move synchronously to complete centering adjustment of the engine and the centering equipment;

after centering adjustment is finished, the fast-assembling trolley (1) is installed on the rack (2) to test the engine.

7. Engine testing method according to claim 6, characterized in that the specific method of moving the support structure (5) to adjust the position of the support structure (5) and the engine is:

the distance between each locator (82) is obtained based on manual input of the model of the engine, and after any group of sensing devices are paired, the positions of the rest of the supporting structures (5) are adjusted according to the distance between the locators (82) so as to rapidly complete the pairing of the rest of the sensing devices.

8. The engine testing method according to claim 6, characterized in that: after the centering adjustment of the engine is completed, recording the vertical distance from the range finder (536) to the corresponding balance plate (512) as initial distance information; after the fast-assembling trolley (1) is installed on the rack (2), whether the current distance information is consistent with the initial distance information or not is judged, if not, the current distance information is recovered to the initial distance information through the lifting support structure (5), and then the lifting support structure (5) is synchronously lifted to realize centering of the engine and the rack (2).