CN212748310U - Engine centering fast-assembling dolly - Google Patents

Abstract

The utility model relates to an engine test field discloses an engine centering fast-assembling dolly, including the frame, locate position adjustment mechanism, centering detection mechanism that are used for bearing and adjust the engine position on the frame. The centering detection mechanism comprises a support arranged on the frame, a centering disc arranged on the support, a plurality of first distance measuring sensors and at least two second distance measuring sensors which are respectively arranged on the centering disc; the alignment axis of the alignment disc extends along a first direction, the ray of each first distance measuring sensor extends along the first direction and can irradiate the end face of the rotating shaft of the engine, and the ray emitting points of each first distance measuring sensor are positioned on the same plane vertical to the alignment axis of the alignment disc; the ray of each second ranging sensor is perpendicular to and intersected with the centering axis, and the distances from the ray emission points of the second ranging sensors to the centering axis are equal. The utility model discloses an engine centering fast-assembling dolly has the characteristics that engine centering precision is high, the error is little.

Description

Engine centering fast-assembling dolly

Technical Field

The utility model relates to an engine test technical field especially relates to an engine centering fast-assembling dolly.

Background

The engine is usually assembled on an engine centering fast-assembling trolley to complete centering debugging of the engine before engine bench testing is carried out. The engine centering means that the rotating shaft of the engine is coaxial with the centering axis of the centering device on the quick-mounting trolley, which is used for simulating the axis of the rotor of the dynamometer, by adjusting the position of the engine, so that the coaxiality of the rotating shaft of the engine and the rotating shaft of the dynamometer meets the test requirements.

The conventional engine centering fast-assembling trolley generally adopts a wire centering mode for centering an engine. The centering of the iron wires is that the iron wires are respectively fixed at the center of a centering instrument of the fast-assembly trolley and the center of a rotating shaft of an engine, after the position of the engine is initially adjusted to enable the two iron wires to be in a basically aligned state, the position change of the two iron wires is observed by rotating a crankshaft of the engine, then the position of the engine is adjusted by adjusting and moving engine supporting legs of the engine centering fast-assembly trolley until the two iron wires are always coaxial through visual observation, and therefore centering and debugging of the engine are achieved. However, the centering operation of the engine is realized by observing two iron wires by naked eyes in the iron wire centering, the centering precision is low, and the error is large.

Therefore, it is needed to provide a quick-mounting centering trolley for an engine, which has the characteristics of high centering precision and small error.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engine centering fast-assembling dolly, it has the characteristics that the centering precision is high, the error is little.

To achieve the purpose, the utility model adopts the following technical proposal:

an engine centering fast-assembling dolly includes:

a frame;

the position adjusting mechanism is arranged on the frame and used for bearing and adjusting the position of the engine;

the centering detection mechanism comprises a support arranged on the frame, a centering disc arranged on the support, a plurality of first ranging sensors and at least two second ranging sensors, wherein the first ranging sensors and the second ranging sensors are respectively arranged on the centering disc;

the alignment axis of the alignment disc extends along a first direction, the ray of each first distance measuring sensor extends along the first direction and can irradiate the end face of a rotating shaft of an engine, and the ray emitting point of each first distance measuring sensor is positioned on the same plane perpendicular to the alignment axis of the alignment disc; the ray of each second ranging sensor is perpendicular to and intersects with the centering axis, and the distances from the ray emitting points of the second ranging sensors to the centering axis are equal.

Optionally, each of the second distance measuring sensors is uniformly distributed around the centering axis of the centering disc in a circular matrix.

Optionally, the second ranging sensors are four in number.

Optionally, the number of the first distance measuring sensors is four, three of the first distance measuring sensors are uniformly distributed on the disc surface of the centering disc in a circular matrix shape, and the rest of the first distance measuring sensors are arranged in the center of the centering disc.

Optionally, the engine centering quick-assembling trolley further comprises:

and the control system is respectively in signal connection with each first ranging sensor and each second ranging sensor.

Optionally, the position adjustment mechanism comprises:

the underframe is arranged on the frame;

the two cross beams are respectively arranged on the underframe and can slide along the first direction;

the engine comprises four lifting support columns, wherein two lifting support columns are arranged on each cross beam respectively and can move in a second direction perpendicular to the first direction, the height of each lifting support column in the vertical direction is adjustable, and the engine is borne at the tops of the four lifting support columns, wherein the vertical direction is perpendicular to the first direction and the second direction.

Optionally, the position adjustment mechanism further comprises:

two first driving sources which are respectively in one-to-one driving connection with the cross beams and are used for driving the cross beams to move along the first direction;

and the four second driving sources are respectively in one-to-one driving connection with the four lifting support columns and are used for driving each lifting support column to move along the second direction.

Optionally, the lifting support column is a hydraulic lifting column, and the position adjusting mechanism further includes:

and the hydraulic driving source is respectively in driving connection with each lifting support column and is used for driving each lifting support column to move along the vertical direction.

Optionally, the lifting support column comprises:

the bottom supporting columns can be movably arranged on the corresponding cross beams along the second direction;

the top lifting column is movably arranged at the upper part of the bottom supporting column along the vertical direction;

and the fastening connecting piece is arranged at the top end of the top lifting column and is used for being detachably and fixedly connected with the engine.

Optionally, the bottom of the frame is provided with universal wheels.

The utility model has the advantages that:

the alignment axis of the alignment disc extends along the first direction, the ray of each first distance measuring sensor extends along the first direction and can irradiate the end face of the rotating shaft of the engine, and the ray emitting points of each first distance measuring sensor are positioned on the same plane vertical to the alignment axis of the alignment disc; meanwhile, the rays emitted by the second distance measuring sensors are perpendicular to and intersected with the centering axis, and the distances from the ray emitting points of the second distance measuring sensors to the centering axis are equal. Therefore, when the distance values detected and obtained by the first distance measuring sensors are equal, the ray of each first distance measuring sensor is perpendicular to the end face of the rotating shaft, namely the axis of the rotating shaft of the engine is in a state of being parallel to the centering axis; meanwhile, when the distance values detected by the second distance measuring sensors are equal, the fact that the axis of the rotating shaft of the engine is coincident with the axis of the centering disc is indicated, and therefore accurate centering of the rotating shaft of the engine is achieved. Therefore, the worker may detect the distance from the end surface of the rotating shaft of the engine by emitting a ray to the end surface of the rotating shaft of the engine in the first direction through each of the first distance measuring sensors, and detect the distance from the side wall of the rotating shaft of the engine by emitting a ray to the side wall of the rotating shaft through each of the second distance measuring sensors. And then, adjusting the position of the engine through a position adjusting mechanism according to the distance values respectively fed back by each first distance measuring sensor and each second distance measuring sensor until the distance values detected by each first distance measuring sensor are equal, and the distance values detected by each second distance measuring sensor are also equal, so that the accurate centering of the engine is completed. The utility model has the characteristics of the engine centering precision is high, the error is little.

Drawings

FIG. 1 is a top view of the engine centering quick-mounting cart provided by the present invention with the frame thereof removed;

FIG. 2 is a front view of the engine centering quick-mounting trolley provided by the utility model with the frame removed;

FIG. 3 is a side view of the engine centering quick-mounting cart provided by the present invention with the frame removed;

FIG. 4 is a schematic front view showing the distribution of the first distance measuring sensors and the second distance measuring sensors on the centering disc of the engine centering quick-assembling trolley provided by the present invention;

fig. 5 is a schematic top view of distribution of each first distance measuring sensor and each second distance measuring sensor on the centering disc of the engine centering fast-assembling trolley.

In the figure:

x-a first direction; y-a second direction; z-vertical direction;

100-a rotating shaft;

1-a position adjustment mechanism; 11-a chassis; 12-a cross beam; 13-lifting support columns; 2-centering detection mechanism; 21-a scaffold; 22-centering disc; 23-a first ranging sensor; 24-second ranging sensor.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1-3, the present embodiment provides an engine centering quick-assembly trolley, which includes a frame (not shown in the drawings), a position adjusting mechanism 1 and a centering detection mechanism 2, where X denotes a first direction, Y denotes a second direction, and Z denotes a vertical direction; the bottom of the frame is provided with universal wheels (not shown in the figure), and one side of the frame is provided with a handrail (not shown in the figure), so that the frame can be pushed to move. The position adjusting mechanism 1 is arranged on the frame, and the position adjusting mechanism 1 is used for bearing and adjusting the position of the engine. As shown in fig. 2-4, the centering detection mechanism 2 includes a bracket 21 disposed on the frame, a centering disc 22 disposed on the bracket 21, a plurality of first distance measuring sensors 23 and at least two second distance measuring sensors 24 respectively disposed on the centering disc 22; wherein the centering axis of the centering disc 22 extends in a first direction. When the engine centering fast-assembling trolley is transferred to an engine test bench (not shown in the figure), the centering axis is coaxial with the axis of the rotating shaft of the dynamometer (not shown in the figure) on the engine test bench, so that when the engine is installed on the engine centering fast-assembling trolley, the centering axis can be used for simulating the axis of the rotating shaft of the dynamometer. The ray of each first distance measuring sensor 23 extends along a first direction and can irradiate the end surface of the rotating shaft 100 of the engine, and the ray emitting point of each first distance measuring sensor 23 is positioned on the same plane vertical to the centering axis of the centering disc 22; the ray of each second ranging sensor 24 is perpendicular to and intersects the centering axis, and the ray emitting points of each second ranging sensor 24 are equidistant from the centering axis.

Since the centering axis of the centering disc 22 extends in the first direction, the radiation of each first distance measuring sensor 23 extends in the first direction and can be irradiated onto the end surface of the rotating shaft 100 of the engine, and the radiation emitting point of each first distance measuring sensor 23 is located on the same plane perpendicular to the centering axis of the centering disc 22; meanwhile, the rays emitted by each second ranging sensor 24 are perpendicular to and intersect the centering axis, and the distances from the ray emitting points of each second ranging sensor 24 to the centering axis are equal. Therefore, when the obtained distance values detected by the first distance measuring sensors 23 are equal, it indicates that the rays emitted by the first distance measuring sensors 23 are perpendicular to the end surface of the rotating shaft 100, i.e. the axis of the rotating shaft 100 of the engine is parallel to the centering axis; meanwhile, when the distance values detected by the second distance measuring sensors 24 are equal, it is indicated that the axis of the rotating shaft 100 of the engine coincides with the axis of the centering disc, so that the rotating shaft 100 of the engine is accurately centered. Therefore, the worker may emit a ray toward the end surface of the rotating shaft 100 of the engine in the first direction through each of the first distance measuring sensors 23 to detect the distance from the end surface of the rotating shaft 100 of the engine; and the distance from the side wall of the engine rotation shaft 100 is detected by emitting a ray to the side wall of the rotation shaft 100 by each second distance measuring sensor 24. Then, according to the distance values fed back by the first distance measuring sensors 23 and the second distance measuring sensors 24, the position of the engine is adjusted in different directions by the position adjusting mechanism 1 until the distance values detected by the first distance measuring sensors 23 are equal, and the distance values detected by the second distance measuring sensors 24 are equal, so that the accurate centering of the engine is completed. The utility model has the characteristics of centering precision is high, the error is little.

In addition, in this embodiment, the engine centering fast-assembling dolly further includes a control system, and the control system is connected with each first distance measuring sensor 23 and each second distance measuring sensor 24 signal respectively, and then can receive the signal and show department's distance data, because the control system is prior art, so no longer describe it again.

Further, in the present embodiment, the second distance measuring sensors 24 are uniformly distributed around the centering axis of the centering disc 22 in a circular matrix shape, so as to measure distances at different positions around the sidewall of the rotating shaft 100, thereby improving the accuracy of distance detection. Specifically, as shown in fig. 3-5, the second ranging sensors 24 have a total of four. Each second distance measuring sensor 24 is fixedly connected to an end of the centering disc 22 through a connecting rod (not shown), and a detection space for accommodating the rotating shaft 100 is formed between the four second distance measuring sensors 24, so that the radiation of the second distance measuring sensors 24 can irradiate onto the side wall of the rotating shaft 100, and distance detection is performed. In other embodiments, the number of the second distance measuring sensors 24 may be two, three, five or more, and the greater the number of the second distance measuring sensors 24, the higher the debugging accuracy in the engine position debugging.

Similarly, as shown in fig. 3 to 5, in the present embodiment, there are four first distance measuring sensors 23, three first distance measuring sensors 23 are uniformly distributed on the disc surface of the centering disc 22 in a circular matrix, and the remaining first distance measuring sensors 23 are disposed in the center of the centering disc 22. According to the principle of three-point coplanarity, the number of the first distance measuring sensors 23 is at least three, that is, when the distances detected by the three first distance measuring sensors 23 are equal, the end surface of the rotating shaft 100 of the engine is perpendicular to the centering axis, that is, the axis of the rotating shaft 100 is parallel to the centering axis. In other embodiments, the number of the first ranging sensors 23 may also be five, six, or more.

And the engine can be centered and debugged in order to adjust the position of the engine. The position adjusting mechanism 1 is just a position adjusting mechanism of the existing engine centering fast-assembling trolley. Specifically, as shown in fig. 1 to 3, in the present embodiment, the position adjustment mechanism 1 includes an underframe 11, two cross beams 12, and four lifting support columns 13. The underframe 11 is arranged on the frame, and the underframe 11 is two horizontal straight columns extending along a first direction; the two cross beams 12 are respectively arranged on the base frame 11 and can slide along a first direction, and the cross beams 12 are horizontal straight columns extending along a second direction; two lifting support columns 13 are respectively arranged on each beam 12, each lifting support column 13 can move along the second direction perpendicular to the first direction and the vertical direction, each lifting support column 13 is adjustable in height along the vertical direction, the engine is borne at the tops of the four lifting support columns 13, each lifting support column 13 is moved along the first direction by moving the beam 12 along the first direction, and the position of the engine along the first direction, the second direction and the vertical direction can be adjusted by adjusting the height of the lifting support column 13 along the vertical direction, and the heights of the four lifting support columns 13 can be adjusted independently, so that the left-leaning, right-leaning, forward-leaning and backward-leaning inclination states of the engine can be adjusted, and the centering and debugging of the engine can be realized by matching with the centering detection mechanism 2. Since the connection structure of the base frame 11, the two cross beams 12 and the four lifting support columns 13 is the prior art, the detailed description thereof is omitted.

Further, in order to enable the position of the engine in the first direction and the second direction to be electrically adjusted. In the present embodiment, the position adjustment mechanism 1 further includes two first drive sources (not shown in the figure) and four second drive sources (not shown in the figure). The two first driving sources are respectively in one-to-one driving connection with each cross beam 12, and the two first driving sources respectively drive each cross beam 12 to move along a first direction one by one; the four second driving sources are respectively in one-to-one driving connection with the four lifting support columns 13, and the four second driving sources respectively drive the lifting support columns 13 to move along the second direction one by one. Specifically, the first and second drive sources may be screw nut motor drives. More specifically, taking one of the first driving sources as an example, the motor of the first driving source is fixed on the base frame 11, the output shaft of the motor of the first driving source is coaxially connected with a lead screw, the lead screw extends along the first direction, the nut of the first driving source is fixed on the cross beam 12 and is in transmission connection with the corresponding lead screw, and then the reciprocating movement of the driving cross beam 12 along the first direction is realized. Since the specific transmission structures of the first driving source and the second driving source can adopt the same existing transmission structure, the detailed description thereof is omitted.

And to perform the elevating function of the elevating support column 13. In this embodiment, the lifting support columns 13 are hydraulic lifting columns, and the position adjusting mechanism 1 further includes a hydraulic driving source (not shown in the figure), the hydraulic driving source is respectively connected to the lifting support columns 13 in a driving manner, and the hydraulic driving source is configured to drive the lifting support columns 13 to move in the vertical direction. The hydraulic driving source comprises a hydraulic pump, a hydraulic tank and a power supply (not shown in the figure), the hydraulic pump is connected with the control system of the engine centering fast-assembling trolley in a control mode, and then the hydraulic pump can be controlled to convey hydraulic pressure for the hydraulic lifting column so as to control the lifting of the hydraulic lifting column. Specifically, the elevating support column 13 includes a bottom support column, a top elevating column, and a fastening connector (not shown in the drawings). The bottom supporting columns can be arranged on the corresponding cross beams 12 in a movable manner along the second direction, and the bottom supporting columns can be connected to the cross beams 12 in a sliding manner by adopting the existing sliding chute sliding block guide assembly; the top lifting column can be arranged on the upper part of the bottom supporting column in a way of moving along the vertical direction. Particularly, be provided with high-pressure oil cavity in the bottom sprag post, the one end of stretching into high-pressure oil cavity room of top lift post is provided with the piston, and the piston is located high-pressure oil cavity, and then under the hydraulic drive of hydraulic oil, can drive the piston and reciprocate to the lift height of adjustment top lift post along direction of height, because concrete structure is current structure, so no longer give unnecessary details to its drawing. And the fastening connecting piece is arranged at the top end of the top lifting column and is used for being detachably and fixedly connected with the engine. And the fastening connecting piece can be fastened and connected to the engine through a fastening bolt. Therefore, the function of fixedly supporting and connecting the engine by the lifting support column 13 and the function of driving the engine to move up and down by the lifting support column 13 are realized.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. The utility model provides an engine centering fast-assembling dolly which characterized in that includes:

a frame;

the position adjusting mechanism (1) is arranged on the frame and used for bearing and adjusting the position of the engine;

the centering detection mechanism (2) comprises a support (21) arranged on the frame, a centering disc (22) arranged on the support (21), a plurality of first ranging sensors (23) and at least two second ranging sensors (24) which are respectively arranged on the centering disc (22);

the centering axis of the centering disc (22) extends along a first direction, the ray of each first distance measuring sensor (23) extends along the first direction and can irradiate the end face of a rotating shaft (100) of an engine, and the ray emitting point of each first distance measuring sensor (23) is positioned on the same plane perpendicular to the centering axis of the centering disc (22); the ray of each second ranging sensor (24) is perpendicular to and intersects the centering axis, and the ray emitting points of each second ranging sensor (24) are equal in distance from the centering axis.

2. The engine centering quick-assembly trolley according to claim 1, characterized in that each of said second distance measuring sensors (24) is uniformly arranged around the centering axis of said centering disc (22) in a circular matrix.

3. The engine centering quick-assembly trolley according to claim 2, characterized in that the number of the second distance measuring sensors (24) is four.

4. The engine centering quick-assembling trolley as claimed in claim 1, wherein the number of the first distance measuring sensors (23) is four, three of the first distance measuring sensors (23) are uniformly distributed on the surface of the centering disc (22) in a circular matrix manner, and the rest of the first distance measuring sensors (23) are arranged at the center of the centering disc (22).

5. The engine centering package cart of claim 1, further comprising:

and the control system is respectively in signal connection with each first distance measuring sensor (23) and each second distance measuring sensor (24).

6. The engine centering quick-assembling trolley according to claim 1, wherein the position adjusting mechanism (1) comprises:

an underframe (11) arranged on the frame;

two cross beams (12) which are respectively arranged on the base frame (11) in a sliding manner along the first direction;

the lifting support column structure comprises four lifting support columns (13), wherein two lifting support columns (13) are arranged on each cross beam (12) respectively, each lifting support column (13) can move in a second direction perpendicular to the first direction, the height of each lifting support column (13) in the vertical direction is adjustable, and an engine is borne on the tops of the four lifting support columns (13), wherein the vertical direction is perpendicular to the first direction and the second direction.

7. The engine centering quick-assembling trolley according to claim 6, wherein said position adjusting mechanism (1) further comprises:

two first driving sources are respectively in one-to-one driving connection with each cross beam (12) and used for driving each cross beam (12) to move along the first direction;

and the four second driving sources are respectively in one-to-one driving connection with the four lifting support columns (13) and are used for driving each lifting support column (13) to move along the second direction.

8. The engine centering quick-assembling trolley according to claim 6, wherein the lifting support column (13) is a hydraulic lifting column, and the position adjusting mechanism (1) further comprises:

and the hydraulic driving source is respectively in driving connection with each lifting support column (13) and is used for driving each lifting support column (13) to move along the vertical direction.

9. The engine centering quick-assembly trolley according to claim 6, characterized in that said lifting support column (13) comprises:

the bottom supporting columns are movably arranged on the corresponding cross beams (12) along the second direction;

the top lifting column is movably arranged at the upper part of the bottom supporting column along the vertical direction;

and the fastening connecting piece is arranged at the top end of the top lifting column and is used for being detachably and fixedly connected with the engine.

10. The engine centering quick-assembling trolley according to claim 1, wherein universal wheels are arranged at the bottom of the trolley frame.

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