WO2018098945A1

WO2018098945A1 - Engine performance testing and comparing apparatus

Info

Publication number: WO2018098945A1
Application number: PCT/CN2017/078169
Authority: WO
Inventors: 陈启先; 梁鹏; 王勇
Original assignee: 广西玉柴机器股份有限公司
Priority date: 2016-11-30
Filing date: 2017-03-24
Publication date: 2018-06-07
Also published as: CN106679979A; CN106679979B; CU20180064A7

Abstract

An engine performance testing and comparing apparatus, comprising a connecting component coaxially connected to a flywheel (1) and outputting a torque, a torque transferring sensor (2) coaxially mounted on the connecting component, a processing device provided at the periphery of the sensor (2) and paired with the sensor (2), and a load-connecting transmission shaft component coaxially mounted outside of the sensor (2). The engine performance testing and comparing apparatus is structurally reasonable, quick to mount, quick and accurate in testing, economical and practical, of a short assembled length, and structurally compact, effectively saves mounting space, allows stable and reliable torque transfer, and has high torque transfer efficiency.

Description

Engine performance detecting and comparing device

Technical field

The present invention relates to the field of engines, and more particularly to an engine performance detecting and comparing device.

Background technique

In the performance test of the engine, the engine is connected to the dynamometer through the intermediate shaft, and the engine drives the spindle of the dynamometer to rotate, so that the water in the vortex chamber of the dynamometer generates eddy current, and the brake of the dynamometer absorbs the output power of the engine. Passed to the sensor on the dynamometer, the dynamometer is equipped with a speed sensor, you can calculate the torque and power of the engine at a certain speed.

According to the prior art technical solution, water is heated due to the water eddy generated by the dynamometer, and the input mechanical energy is converted into heat energy, and a part of the input power is consumed, so there is a certain error.

Summary of the invention

The object of the present invention is to provide the above-mentioned problems in view of the prior art, and to provide a quick and accurate detection and comparison device for engine performance.

In order to achieve the above object, an engine performance detecting and comparing device of the present invention comprises a connecting assembly coaxially connected to a flywheel and outputting a torque to the outside, wherein the connecting assembly is coaxially mounted with a torque transmitting sensor, The periphery of the sensor is provided with a processing device paired with the sensor, and a drive shaft assembly to which a load can be connected is coaxially mounted outside the sensor.

Further, the processing device includes an induction coil disposed around the sensor, and a bracket is disposed around the outside of the induction coil.

As a further improvement, the connecting assembly comprises a torque-transmitting connecting plate and a transition plate coaxially mounted outwardly on the outer side of the flywheel, between the connecting plate and the flywheel, the connecting plate and the transition plate A first locking mechanism, a second locking mechanism and a third locking mechanism for transmitting torque are respectively disposed between the transition plate and the sensor.

Further, the first locking mechanism includes a plurality of first through holes disposed at an outer edge of the connecting plate and corresponding to the threaded holes on the flywheel; the second locking mechanism is included in the a plurality of second through holes uniformly disposed circumferentially around the axial line of the lands on the end surface of the lands and corresponding first screw holes disposed on the transition plate; the third locking mechanism And a corresponding positioning locating mouth respectively provided on the bonding surface between the transition plate and the sensor, further comprising a plurality of uniformly arranged circumferentially around the axial line of the transition disk A second screw hole and a corresponding third through hole are disposed in the sensor.

Further, a central portion of the connecting plate is provided with a positioning hole, and an inner end surface of the transition plate is convexly provided with a positioning step adapted to the positioning hole, and the second through hole is circumferentially disposed at the Positioning the outer side of the hole; the outer end surface of the transition plate is convexly provided with a first outer convex end positioned opposite to the inner end of the sensor, and correspondingly, the sensor is provided with a first concave end; The third through hole is provided with a receiving cavity for accommodating the bolt head.

As a further improvement, the transmission shaft assembly includes a spline sleeve coaxially mounted on an outer end surface of the sensor and a spline shaft connected to the spline sleeve, the spline sleeve and the sensor There is a fourth locking mechanism that transmits torque.

Further, the fourth locking mechanism includes an outward extension at one end of the spline sleeve An annular flange adapted to the outer end surface of the sensor, wherein the annular flange is provided with a fourth through hole coaxially connecting the spline sleeve and the sensor and uniformly distributed in the circumferential direction. The sensor is provided with a third screw hole corresponding to the fourth through hole.

Further, the outer end of the sensor protrudes from a second outer protrusion positioned to be positioned with the inner end of the spline sleeve, and correspondingly, the spline sleeve is provided with a second concave end .

As a further improvement, the second screw hole and the third through hole are respectively disposed at an outer edge of the transition plate and the sensor; the third screw hole is disposed at an outer edge of the sensor and is opposite to the first A staggered arrangement of three-way holes.

Beneficial effect

Compared with the prior art, the structure of the invention is reasonable, the installation is quick, the torque transmission is stable and reliable, the torque transmission efficiency is high, the detection is fast, accurate, economical and practical; and the measurement data of the device and the dynamometer can also be measured. By comparing the data, the data error of the dynamometer can be obtained; the assembly length of the device is small, the structure is compact, the installation space is effectively saved, and the torque transmission is more stable.

DRAWINGS

Figure 1 is an assembled view of an engine performance detecting and comparing device of the present invention;

Figure 2 is a front elevational view showing the structure of the excess disk in the present invention;

Figure 3 is a cross-sectional view showing the structure in the direction of A-A in Figure 2;

Figure 4 is a cross-sectional view showing the structure taken along line B-B of Figure 2;

Figure 5 is a front elevational view showing the structure of the lands in the present invention;

Figure 6 is a front elevational view showing the structure of the sensor of the present invention;

Figure 7 is a cross-sectional view showing the structure taken along the line A-A in Figure 6;

Figure 8 is a cross-sectional view showing the structure taken along the line B-B in Figure 6;

In the figure: 1, flywheel; 2, sensor; 3, induction coil; 4, bracket; 5, connecting plate; 6, transition plate; 7, spline sleeve; 8, spline shaft; 9, first through hole; , second through hole; 11, first screw hole; 12, second screw hole; 13, third through hole; 14, annular convex edge; 15, fourth through hole; 16, third screw hole; a hole; 18, a positioning step; 19, a first outer convex stop; 20, a first concave stop; 21, a second outer convex stop; 22, a second concave stop; 23, a receiving cavity; Connector.

detailed description

The invention is further described in the following with reference to the accompanying drawings, but without the limitation of the invention, the invention is limited by the scope of the invention.

A specific embodiment of the present invention is as follows: Referring to FIGS. 1-8, an engine performance detecting and comparing device includes a connecting component coaxially connected to the flywheel 1 and outputting torque outward, and the connecting component is coaxially mounted. There is a sensor 2 for transmitting torque. The sensor 2 is provided with a processing device matched with the sensor 2, and a drive shaft assembly for connecting the load is coaxially mounted on the outer side of the sensor 2. The sensor 2 is coaxial with the engine flywheel 1 through the connection assembly. It can be installed and output torque, and then connected to the drive shaft assembly connected to the load to drive the load to rotate. The sensor 2 can detect the torque, speed and other parameters received, and analyze the data through the processing device to test the performance of the engine. The device is quick to install, the detection is fast, accurate, economical and practical; the data error of the dynamometer can also be obtained by comparing the measured data of the device with the data measured by the dynamometer. In this case, the detection comparison device is installed in front of the load end dynamometer of the output of the engine, and the dynamometer is eliminated. The error is the accurate output parameter of the engine.

In the present embodiment, the processing device includes an inductive coil 3 disposed around the sensor 2, and a bracket 4 is disposed around the outside of the inductive coil 3. The bracket 4 fixes the inductive coil 3 around the disc-shaped sensor 2 to facilitate the inductive coil 3. The components of the processing device receive and process the data detected by the sensor 2, and also prevent the structure of the bracket 4 from interfering with the rotational motion of the sensor 2.

In the present embodiment, the connecting assembly includes a connecting plate 5 and a transition plate 6 which are coaxially mounted outwardly and coaxially outwardly of the flywheel 1, and between the connecting plate 5 and the flywheel 1, the connecting plate 5 and the transition plate 6 A first locking mechanism, a second locking mechanism and a third locking mechanism for transmitting torque are respectively disposed between the intermediate and transition plates 6 and the sensor 2.

Wherein, the first locking mechanism comprises a plurality of first through holes 9 disposed on the outer edge of the lands 5 and corresponding to the threaded holes on the flywheel 1; the lands 5 are connected to the flywheel 1 by bolts, and the bolts are arranged The outer edge of the connecting disc 5 and the flywheel 1 makes the connecting disc 5 less susceptible to rigid deformation, ensures the torque transmission between the flywheel 1 and the connecting disc 5, is safe and reliable, and the transmission is stable.

Wherein, the second locking mechanism comprises a plurality of second through holes 10 uniformly disposed on the end surface of the connecting plate 5 around the axial line of the connecting plate 5 and corresponding first screw holes 11 disposed on the transition plate 6 The connecting plate 5 is connected to the excess disk 6 by bolts, and the torque outputted by the engine is transmitted to the transition plate 6, the transmission is stable and reliable, and the transmission efficiency is high; and, in the middle of the connecting plate 5, a positioning hole 17 is provided, and the inside of the transition plate 6 is provided. A positioning step 18 corresponding to the positioning hole 17 is arranged on the end surface, and the positioning step 18 is matched with the positioning hole 17 to facilitate the positioning connection of the transition plate 6 and the connecting plate 5, so that the installation is faster, saving time and improving The working efficiency, at the same time, reduces the shear stress on the connecting bolt, ensures the service life of the bolt, and ensures that the connecting plate 5 and the transition plate 6 are more stable and reliable; and the second through hole 10 The sleeve is disposed on the outer side of the positioning hole 17, and the bolt first passes through the second through hole 10 and the first screw hole 11 from the inner side of the connecting plate 5, so that the bolt head protrudes and is placed in the groove in the middle of the flywheel 1, so that the bolt head is not It will interfere with other components, ensure that the assembly of the device is more compact and compact, and the installation is ingenious and compact, which effectively saves installation space;

Wherein, the third locking mechanism comprises mutually corresponding positioning stops respectively provided on the bonding surfaces between the transition plate 6 and the sensor 2, and further comprises a circumferential uniformity around the axis line of the transition plate 6 around the transition plate 6 a plurality of second screw holes 12 and corresponding third holes 13 are disposed in the sensor 2. The plurality of third through holes 13 are provided with a receiving cavity 23 for accommodating the bolt heads, and sequentially pass through the third through the bolts. The through hole 13 and the second screw hole 12 firmly connect the transition plate 6 and the sensor 2, and transmit the torque of the engine to the sensor 2 stably and reliably, and are safe and reliable, and the bolt head of the connecting bolt is disposed in the accommodating cavity 23 to avoid the bolt. The head protrudes outward, which makes the assembly of the guarantee device more compact and compact, the assembly length of the device is shorter, the structure is compact, the installation space is effectively saved, and the torque transmission is more stable.

In this embodiment, the outer end surface of the transition plate 6 is convexly provided with a first outer convex stop 19 positioned with the inner end of the sensor 2, and the inner end of the sensor 2 is provided with the first outer convex stop 19. The first concave stop 20 is matched with the first concave stop 20 through the first outer convex stop 19 to facilitate the positioning connection of the transition plate 6 and the sensor 2, so that the installation is faster, saving time and improving work efficiency. At the same time, the shear stress on the connecting bolt is reduced, the service life of the bolt is ensured, and the connection between the sensor 2 and the transition plate 6 is ensured to be more stable and reliable.

In the present embodiment, the transmission shaft assembly includes a spline sleeve 7 coaxially mounted on the outer end surface of the transition plate 6, and a spline shaft 8 having one end connected to the spline sleeve 7 and the other end being connectable to the load; the spline sleeve 7 A fourth locking mechanism for transmitting torque is disposed between the sensor 2 and the fourth locking mechanism includes an annular flange 14 extending outwardly from one end of the spline sleeve 7 and adapted to the outer end surface of the sensor 2, the annular flange 14 is provided with a spline sleeve 7 and a sensor 2 coaxially connected a fourth through hole 15 uniformly distributed in the circumferential direction, the sensor 2 is provided with a third screw hole 16 corresponding to the fourth through hole 15, and the outer end of the sensor 2 is convexly disposed to be positioned with the inner end of the spline sleeve 7. The second outer protrusion 21, the inner end of the spline sleeve 7 is correspondingly provided with a second concave stop 22 adapted to the second outer protrusion 21, and the spline sleeve 7 is closely fitted with the sensor 2. The installation is tight, and the spline sleeve 7 is firmly connected to the sensor 2 through the bolt through the fourth through hole 15 and the third screw hole 16, and the torque is transmitted to the spline sleeve 7 effectively, and the torque transmission efficiency is high. , the transmission is stable, safe and reliable;

In the present embodiment, at one end of the spline shaft 8 is provided with a convex male spline adapted to the spline sleeve 7, and the splined connection of the spline sleeve 7 and the spline shaft 8 makes the torque transmission stable and reliable, and the other end The joint 24 connected to the load is connected to the load through the joint 24, and the load can axially limit the spline shaft 8, so that the torque of the spline shaft is more safely and reliably transmitted to the load, thereby driving the load to rotate, thereby The sensor 2 can quickly and accurately detect the performance of the engine.

In this embodiment, the second screw hole 12 and the third through hole 13 are respectively disposed at the outer edge of the transition plate 6 and the sensor 2; the third screw hole 16 is disposed at the outer edge of the sensor 2 and the third through hole 13 The staggered arrangement makes the structural design of the sensor 2 simpler and the torque transmission is more stable and reliable.

The above is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of the present invention. The practicality of the patent.

Claims

An engine performance detecting and comparing device, comprising: a connecting component coaxially connected with a flywheel (1) and outputting a torque outwardly, wherein the connecting component is coaxially mounted with a torque transmitting sensor (2); The periphery of the sensor (2) is provided with a processing device paired with the sensor (2), and a drive shaft assembly to which a load can be connected is coaxially mounted outside the sensor (2).
An engine performance detecting and comparing device according to claim 1, wherein said processing means comprises an induction coil (3) disposed around said sensor (2), surrounding said induction coil (3) A bracket (4) is provided.
The engine performance detecting and contrasting device according to claim 1, wherein said connecting assembly comprises a connecting plate (5) and a transition that can be coaxially mounted outwardly on the outer side of the flywheel (1) and capable of transmitting torque. a disk (6), between the land (5) and the flywheel (1), between the land (5) and the transition plate (6), and between the transition plate (6) and the sensor ( 2) A first locking mechanism, a second locking mechanism and a third locking mechanism for transmitting torque are respectively provided between them.
An engine performance detecting and comparing device according to claim 3, wherein said first locking mechanism comprises a plurality of outer edges disposed on said outer side of said lands (5) and on the flywheel (1) a first through hole (9) corresponding to the threaded hole; the second lock The fastening mechanism includes a plurality of second through holes (10) uniformly disposed on the end surface of the connecting plate (5) around the axial line of the connecting plate (5) and correspondingly disposed on the transition plate ( 6) a first screw hole (11); the third locking mechanism comprises a corresponding one on the bonding surface between the transition plate (6) and the sensor (2) Positioning the stop, further comprising a plurality of second screw holes (12) uniformly arranged around the axial line of the transition plate (6) in the transition plate (6) and correspondingly disposed on the sensor The third through hole (13) of (2).
The engine performance detecting and comparing device according to claim 4, wherein a central portion of the connecting plate (5) is provided with a positioning hole (17), and the inner end surface of the transition plate (6) is convexly disposed. a positioning step (18) adapted to the positioning hole (17), the second through hole (10) being disposed around the positioning hole (17); an outer end surface of the transition plate (6) The protrusion is provided with a first convex protrusion (19) positioned opposite to the inner end of the sensor (2), and correspondingly, the sensor (2) is provided with a first concave stop (20); The third through hole (13) is provided with a receiving cavity (23) for accommodating the bolt head.
An engine performance detecting and comparing device according to claim 4 or 5, wherein said transmission shaft assembly comprises a spline sleeve (7) coaxially mounted on an outer end surface of said sensor (2) and A spline shaft (8) is connected to the spline sleeve (7), and a fourth locking mechanism for transmitting torque is disposed between the spline sleeve (7) and the sensor (2).
An engine performance detecting and comparing device according to claim 6, characterized by The fourth locking mechanism comprises an annular flange (14) extending outwardly from one end of the spline sleeve (7) and adapted to the outer end surface of the sensor (2), the annular convex A fourth through hole (15) coaxially and uniformly distributed between the spline sleeve (7) and the sensor (2) is disposed along the (14), and the sensor (2) is provided There is a third screw hole (16) corresponding to the fourth through hole (15).
The engine performance detecting and comparing device according to claim 7, characterized in that the outer end of the sensor (2) is convexly provided with a second outer portion positioned with the inner end of the spline sleeve (7) The convex stop (21), correspondingly, the spline sleeve (7) is provided with a second concave stop (22).
The engine performance detecting and comparing device according to claim 7 or 8, wherein the second screw hole (12) and the third through hole (13) are respectively disposed on the transition plate (6) and the sensor. The outer edge of (2); the third screw hole (16) is disposed at an outer edge of the sensor (2) and is arranged offset from the third through hole (13).