CN111999070A - Annular orbital actuator arrangement mechanism and test bench - Google Patents

Abstract

The present application relates to an annular orbital actuator arrangement mechanism and a test bench, comprising an annular orbit, an outer planetary gear, a pulley assembly and an actuator assembly, wherein a coaxial slot is arranged on the annular orbit; the outer teeth of the planetary gear are It is arc-shaped and fixed on one side of the annular track; the pulley assembly includes a connecting seat and a limit device, and the limit device is overlapped on the outer arc surface of the annular track; the actuator assembly includes a support, an actuator, and a planetary gear. The gear and the drive motor, one end of the support is connected to the connecting seat of the pulley assembly; the inner gear of the planetary gear is arranged on one side of the support and meshes with the outer gear of the planetary gear; the drive motor is arranged on the support on the other side opposite to the inner gear of the planetary gear On the side, the output end of the drive motor is connected through the inner gear of the planetary gear of the support; when testing auto parts, only one actuator can be arranged to realize the circular rotation of the actuator, which can provide any Loading of directional forces.

Description

Annular orbital actuator arrangement mechanism and test bench

technical field

The application relates to the technical field of auto parts testing, and in particular, to an annular track-type actuator arrangement mechanism and a test bench.

Background technique

Parts fatigue test detects the fatigue characteristics, fatigue life, prefabrication, tensile, compression or tension-compression alternating loads of metals, alloy materials and their components (such as operating joints, fasteners, screw moving parts, etc.) at room temperature. Crack and crack propagation test. Under the action of a sufficiently large alternating stress, the sudden change of the shape of the metal component or the surface nicks or internal defects may cause microscopic cracks due to large stress concentration. The dispersed micro-cracks will form macro-cracks through agglomeration and communication. The macroscopic cracks that have been formed gradually and slowly expand, and the cross-section of the component is gradually weakened. When a certain limit is reached, the component will suddenly break. The above-mentioned failure phenomenon of metal due to alternating stress is called metal fatigue. Statistics show that about 70% of the failures of mechanical parts are caused by fatigue, and most of the accidents are catastrophic.

During the driving process of the vehicle, the parts will be subjected to forces and moments from all directions due to the impact, acceleration, braking and other working conditions caused by the uneven road surface. Under the action of this load, the parts are prone to fatigue failure. Therefore, the fatigue endurance test of automobile parts is an important part in the development process of the parts. It is of practical significance to study the fatigue resistance of automobile mechanical parts through experiments. Through part fatigue testing, the functionality of the part can be verified before it is installed in the whole machine. And on the auto parts test bench, the acceleration of the part bench test can also be achieved through the change of the load spectrum, and the purpose of verifying the function of the parts can be completed in the shortest time. In order to simulate the fatigue test conditions of automobile parts, the actuator is generally used to load the parts; the actuator exerts a control force on the control object according to the determined control law, which is used for the dynamic test and is the output of the dynamic test. Device; an output device or converter in a control system that converts electrical, hydraulic, and pneumatic energy into mechanical action.

In the related art, unidirectional fixed actuators are generally used to simulate the load force loading conditions of automobile parts, such as a right-angle torque fatigue test tool, which includes a bracket, a right-angle torque mechanism and an actuation for loading. The actuator is fixedly arranged and can only be loaded in one fixed direction. If the part is subjected to an unfixed directional force, multiple actuators need to be arranged to load the parts respectively; and a single-direction fixed actuator is used. The structure of the arrangement mechanism of the actuator is complex, the space occupation is large, and the cost is correspondingly high, which virtually increases the cost and design difficulty of the actuator arrangement mechanism.

SUMMARY OF THE INVENTION

The embodiment of the present application provides an annular orbital actuator arrangement mechanism and a test bench, so as to solve the problem that when testing auto parts, only one actuator can be arranged to realize the annular rotation of the actuator, and two actuators can be provided. Loading of forces in any direction in the dimensional plane.

On the one hand, an embodiment of the present application provides an annular orbital actuator arrangement mechanism, including an annular orbit, an external planetary gear, a pulley assembly and an actuator assembly, and the annular orbit is provided with a coaxial slot; the slot Open from the outer arc surface of the annular track to the inner arc surface of the annular track; the outer teeth of the planetary gear are arc-shaped, arranged coaxially with the annular track, and fixed on one side of the annular track; the pulley assembly includes a connecting seat and a limit device, which are connected The seat is connected with the limit device, the connecting seat is passed through the slot by the outer arc surface of the annular track, and the limit device is overlapped on the outer arc surface of the annular track; the actuator assembly includes a support, an actuator, and an inner gear of a planetary gear. and the drive motor, one end of the support is connected to the connecting seat of the pulley assembly; the actuator is arranged on the other end of the support opposite to the pulley assembly; the inner gear of the planetary gear is arranged on one side of the support and meshes with the outer gear of the planetary gear; The motor is arranged on the other side of the support opposite to the inner gear of the planetary gear, and the output end of the driving motor is connected through the inner gear of the planetary gear of the support.

In some embodiments, a plurality of bolts are spaced along an arc between the annular track and the outer gear of the planetary gear.

In some embodiments, the limiting devices are disposed at both ends of the connecting seat.

In some embodiments, the limiting device is a fixed rod or a pulley.

In some embodiments, it further includes two guide pieces arranged in parallel between the inner gear of the planetary gear and the drive motor, and the actuator is inserted between the two guide pieces.

In some embodiments, each of the guide members includes a first section of the guide member, a second section of the guide member, and a third section of the guide member in sequence, and the first section of the guide member is connected to the inner arc surface of one end of the annular track; The second section is arc-shaped and is coaxially arranged with the annular track; the third section of the guide piece is connected to the inner arc surface of the other end of the annular track.

In some embodiments, the second segment of the guide member defines a guide groove along the arc direction.

In some embodiments, the actuator assembly further includes a plurality of bearings, which are respectively provided on the drive motor side and the inner gear side of the planetary gear on the support, the bearings are embedded in the guide grooves, and can be installed at all locations. slide in the guide groove.

In some embodiments, the output end of the drive motor is a rotating shaft.

On the other hand, an embodiment of the present invention provides a test bench, comprising the above-mentioned annular track actuator arrangement mechanism and a mounting frame; one end of the mounting bracket is connected to one end of the annular track, and the other end is mounted on the test bench.

The beneficial effects brought by the technical solution provided in the present application include: when the auto parts need to be loaded with multi-directional load force, the drive motor is started, and the output end of the drive motor rotates to drive the inner gear of the planetary gear connected to it to rotate. The inner gear of the gear meshes with the outer gear of the planetary gear, and the inner gear of the planetary gear can rotate on the outer gear of the planetary gear; in addition, the output end of the drive motor is connected to the inner gear of the planetary gear through the support, so the inner gear of the planetary gear is in the planetary gear. When the external gear rotates, it drives the actuator to rotate; because the connecting seat of the pulley assembly passes through the slot through the outer arc surface of the annular track, and the limit device of the pulley assembly overlaps the outer arc surface of the annular track, so the pulley assembly guarantees The actuator can rotate along the circular track; at this time, the actuator can realize the loading of force in any direction in the two-dimensional plane, so as to realize the continuous adjustment of the loading direction of the actuator, and can output the load force in the unfixed direction for the auto parts. .

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the front structure schematic diagram of the embodiment of the application;

FIG. 2 is a schematic diagram of a rear structure of an embodiment of the application;

3 is a schematic diagram of an exploded structure of a pulley assembly and an actuator assembly according to an embodiment of the application;

FIG. 4 is a schematic diagram of an exploded structure of an annular track, a guide member and an external gear of a planetary gear according to an embodiment of the present application.

In the figure: 1. Ring track; 10. Slotting; 2. External gear of planetary gear; 20. Bolt; 3. Pulley assembly; 30. Connecting seat; 31. Limiting device; 4. Actuator assembly; 40. Support seat; 41, actuator; 42, planetary gear internal gear; 43, drive motor; 430, rotating shaft; 44, bearing; 5, guide piece; 50, first section of guide piece; 51, second section of guide piece; 510, the guide groove; 52, the third section of the guide piece; 6, the installation bracket.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present application.

1, FIG. 2 and FIG. 3, FIG. 1 is a schematic diagram of the front structure of the embodiment of the application; FIG. 2 is a schematic diagram of the rear structure of the embodiment of the application; FIG. 3 is the pulley assembly and the actuator of the embodiment of the application. Schematic diagram of the exploded structure of the assembly; the embodiment of the present application provides an annular orbital actuator arrangement mechanism, including an annular orbit 1, a planetary gear external gear 2, a pulley assembly 3 and an actuator assembly 4, and the annular orbit 1 is provided with a Coaxial slot 10; Slot 10 opens from the outer arc surface of the annular track 1 to the inner arc surface of the annular track 1; The pulley assembly 3 includes a connecting seat 30 and a limiting device 31, the connecting seat 30 and the limiting device 31 are connected, the connecting seat 30 is passed through the slot 10 by the outer arc surface of the annular track 1, and the limiting device 31 overlaps On the outer arc surface of the annular track 1; the actuator assembly 4 includes a support 40, an actuator 41, a planetary gear inner gear 42 and a drive motor 43, and one end of the support 40 is connected to the connecting seat 30 of the pulley assembly 3; the actuator 41, which is arranged on the other end of the support 40 opposite to the pulley assembly 3; the planetary gear inner gear 42 is arranged on one side of the support 40 and meshes with the planetary gear outer gear 2; the drive motor 43 is arranged on the support 40 and is connected to the planetary gear On the other side opposite to the inner gear 42 , the output end of the driving motor 43 is connected through the bearing 40 and the inner gear 42 of the planetary gear.

When the multi-directional load force needs to be applied to the auto parts, the drive motor 43 is started, and the output end of the drive motor 43 rotates to drive the planetary gear inner gear 42 connected to it to rotate. After meshing, the planetary gear inner gear 42 can rotate on the planetary gear outer gear 2; in addition, the output end of the drive motor 43 is connected to the planetary gear inner gear 42 through the support 40, so the planetary gear inner gear 42 is in the planetary gear outer gear. 2 rotates while driving the actuator 41 to rotate; since the connecting seat 30 of the pulley assembly 3 passes through the slot 10 from the outer arc surface of the annular track 1, the limiting device overlaps the outer arc surface of the annular track 1, and drives the motor The output end of 43 drives the support 40 to move from to to drive the connecting base 30 connected to the support 40 to move, so the limiting device 31 can roll on the outer arc surface of the annular track 1, and the setting of the pulley assembly 3 ensures that the actuator 41 Realize the rotation along the annular track 1; at this time, the actuator 41 can realize the loading of force in any direction in the two-dimensional plane, so as to realize the continuous adjustment of the loading direction of the actuator 41, and can output the load force in the unfixed direction for the auto parts; In order to solve the problem of testing auto parts, only one actuator can be arranged to realize the circular rotation of the actuator, which can provide the loading of force in any direction in the two-dimensional plane.

Optionally, a plurality of bolts 20 are arranged along the arc between the annular track 1 and the planetary gear external gear 2; The tracks 1 need to be tightly fitted, and there will be no instability when the actuator 41 outputs the load force to the auto parts during rotation due to the gap between the planetary gear external gear 2 and the annular track 1. Therefore, along the planetary gear This can be achieved by arranging multiple bolts at intervals on the arc of the external gear 2 .

Optionally, the limiting devices 31 are arranged at both ends of the connecting seat 30; since the actuator 41 will exert different load forces on the automobile parts, the annular track 1 will also be subjected to the load force generated by the actuator 41 at the same time. Therefore, the limiting devices 31 are arranged at both ends of the connecting base 30 to enable the pulley assembly 3 to share its load force; meanwhile, it can also ensure that the actuator 41 is more stable when rotating along the annular track 1 .

Optionally, the limiting device 31 is a fixed rod or a pulley; since the limiting device 31 can roll on the outer arc surface of the annular track 1, the limiting device 31 can be selected as a fixed rod or a pulley, which can realize the positioning of the limiting device 31 at the outer arc surface. The outer arc surface of the annular track 1 rolls. It should be noted that the length of the fixed rod or pulley must be greater than the width of the slot 10 to ensure that the fixed rod or pulley can roll stably on the outer arc surface of the annular track 1 and will not slip from the slot 10 .

Optionally, the arrangement mechanism further includes two guide members 5 arranged in parallel between the inner gear 42 of the planetary gear and the drive motor 43 , and the actuator 41 penetrates between the two guide members 5 . Since the actuator 41 will exert different load forces on the auto parts, the annular track 1 will also be subjected to the load force generated by the actuator 41 at the same time. In order to make the arrangement work stably and not be damaged by the load force, the By arranging the guides 5 to share its load force, the arrangement can thus be able to bear a larger load force.

Please refer to FIG. 4 at the same time. FIG. 4 is a schematic diagram of the exploded structure of the annular track, the guide member and the outer gear of the planetary gear according to the embodiment of the application. The second segment 51 of the guide and the third segment 52 of the guide; the first segment 50 of the guide is connected to the inner arc surface of one end of the annular track 1 ; the second segment 51 of the guide is arc-shaped and coaxial with the annular track 1 set; the third segment 52 of the guide is connected to the inner arc surface of the other end of the annular track 1; it should be noted that the arc length of the second segment 51 of the guide and the arc length of the annular track 1 are the same central angle of different radii arc length.

The first section 50 of the guide member is connected to the inner arc surface of one end of the annular track 1, and the third section 52 of the guide member is connected to the inner arc surface of the other end of the annular track 1; surface connection; since the fastening bolt connection is used, if the guide member 5 is damaged due to the load force, it is only necessary to replace the new guide member 5 at this time; it should be noted that the first section 50 of the guide member and the guide member 5 The shape of the third section 52 is not limited to the shape in the figure, and other shapes need to be used to fix the inner arc surfaces at both ends of the annular track, and will not affect the rotation of the pulley assembly 3; the second section 51 of the guide is arc-shaped , and is arranged coaxially with the annular track 1; it is to keep the movement consistency of the actuator assembly 4 when it rotates between the slot 10 and the two guide members 5.

Optionally, the second segment 51 of the guide member defines a guide groove 510 along the arc direction; the guide groove 510 is provided to cooperate with the rotation of the actuator assembly, and the specific cooperation is described below.

Optionally, the actuator assembly 4 further includes a plurality of bearings 44 , which are respectively disposed on the side of the drive motor 43 and the side of the inner gear 42 of the planetary gear on the support 40 . The bearings 44 are embedded in the guide groove 510 and can be inserted into the guide groove 510 . Swipe in. Since the actuator assembly 4 rotates between the two guide members 5 , the bearing 44 on the actuator assembly 4 moves in the guide groove 510 , which can make the actuator 41 rotate more smoothly and reliably. At the same time, the arrangement mechanism can be prevented from being damaged by the load force of the actuator 41, so that the arrangement mechanism can bear a larger load force.

Optionally, the output end of the driving motor 43 is the rotating shaft 430; by starting the driving motor 43, the rotating shaft 430 can be rotated to drive the planetary gear internal gear 42 connected thereto to rotate.

An annular orbital actuator arrangement mechanism provided by the embodiment of the present application, when the multi-directional load force needs to be applied to the auto parts, the driving motor 43 is started, and the output end of the driving motor 43 rotates to drive the planetary gear connected to it. The inner gear 42 rotates, because the inner gear 42 of the planetary gear meshes with the outer gear 2 of the planetary gear, the inner gear 42 of the planetary gear can rotate on the outer gear 2 of the planetary gear, and can simultaneously drive the actuator 41 to rotate; The connecting seat 30 passes through the slot 10 from the outer arc surface of the annular track 1, and the limiting device overlaps the outer arc surface of the annular track 1, so the limiting device 31 can roll on the outer arc surface of the annular track 1; The actuator 41 can realize the loading of the force in any direction in the two-dimensional plane, and only one actuator can be arranged to realize the circular rotation of the actuator, which can output the load force in the non-fixed direction for the auto parts. Since the arrangement mechanism also includes two guide members 5 arranged in parallel between the planetary gear external gear 2 and the drive motor 43, the actuator 41 is inserted between the two guide members 5, and the guide member of the guide member 5 is first A guide groove 510 is formed on the second section 51 along the arc direction, and the bearing 44 is embedded in the guide groove 510 and can move in the guide groove 510, which can make the actuator 41 rotate more smoothly and reliably. At the same time, the arrangement mechanism can be prevented from being damaged by the load force of the actuator 41, so that the arrangement mechanism can bear a larger load force.

The embodiment of the present application also provides a test bench, which includes the annular track actuator arrangement mechanism shown in FIG. 1 to FIG. 4 and a mounting bracket 6. One end of the mounting bracket 6 is connected to one end of the annular track 1, and the other end is installed on the test bench. On the test bench, the fatigue endurance test of the auto parts can be realized through the annular track-type actuator arrangement mechanism.

In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "outside", "inside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, Rather than indicating or implying that the referred device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation on the application. Unless otherwise expressly specified and limited, the terms "arranged", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

It should be noted that in this application, relational terms such as "first paragraph" and "second paragraph" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require Or imply that there is any such actual relationship or order between these entities or operations. Moreover, the term "comprising", or any other variation thereof, is intended to encompass a non-exclusive inclusion such that a process, method, article, or device comprising a list of elements includes not only those elements, but also other elements not expressly listed , or elements inherent to such a process, method, article or apparatus.

The above descriptions are only specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, this application is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims (10)

1. An annular orbital actuator arrangement mechanism, characterized in that, comprising: an annular track (1), which is provided with a coaxial slot (10); the slot (10) opens from the outer arc surface of the annular track (1) to the inner arc surface of the annular track (1); The planetary gear external gear (2), which is in the shape of an arc, is arranged coaxially with the annular track (1), and is fixed on one side of the annular track (1); A pulley assembly (3), comprising a connecting seat (30) and a limiting device (31), the connecting seat (30) and the limiting device (31) are connected, and the connecting seat (30) is formed by the outer arc surface of the annular track (1) Passing through the slot (10), the limiting device (31) overlaps the outer arc surface of the annular track (1); An actuator assembly (4), comprising: a support (40), one end of which is connected to the connecting seat (30) of the pulley assembly (3); an actuator (41), which is arranged on the support (40) and is connected to the pulley assembly The opposite end of the piece (3); the planetary gear inner gear (42), which is arranged on one side of the support (40) and meshes with the planetary gear outer gear (2); the drive motor (43), which is arranged on the On the other side of the support (40) opposite to the planetary gear internal gear (42), the output end of the drive motor (43) passes through the support (40) and the planetary gear internal gear (42) )connect. 2. The annular orbital actuator arrangement mechanism according to claim 1, characterized in that a plurality of bolts (20) are spaced along an arc between the annular orbital (1) and the outer gear of the planetary gear (2). ). 3 . The annular orbital actuator arrangement mechanism according to claim 1 , wherein the limiting devices ( 31 ) are arranged at both ends of the connecting seat ( 30 ). 4 . 4. The annular orbital actuator arrangement mechanism according to claim 1 or 3, wherein the limiting device (31) is a fixed rod or a pulley. 5. The annular orbital actuator arrangement mechanism according to claim 1, characterized in that it further comprises two guide members (5) arranged in parallel between the inner gear of the planetary gear (42) and the drive motor (43) , the actuator (41) is inserted between the two guide members (5). 6. The annular orbital actuator arrangement mechanism according to claim 5, wherein each of the guide members (5) sequentially comprises: The first segment (50) of the guide member is connected to the inner arc surface of one end of the annular track (1); The second segment (51) of the guide member is arc-shaped and is coaxially arranged with the annular track (1); The third segment (52) of the guide member is connected to the inner arc surface of the other end of the annular track (1). 7. The annular orbital actuator arrangement mechanism according to claim 5, wherein a guide groove (510) is formed in the second section (51) of the guide member along the arc direction. 8. The annular orbital actuator arrangement mechanism according to claim 6, wherein the actuator assembly (4) further comprises a plurality of bearings (44), which are respectively provided on the bearing (40) On the drive motor (43) side and the planetary gear inner gear (42) side, the bearing (44) is embedded in the guide groove (510) and can slide in the guide groove (510). 9. The annular orbital actuator arrangement mechanism according to claim 1, wherein the output end of the driving motor (43) is a rotating shaft (430). 10. A test stand, characterized in that it comprises: The annular orbital actuator arrangement mechanism according to any one of claims 1-9; An installation bracket (6), one end of which is connected to one end of the annular track (1), and the other end of which is installed on the test table.

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