CN114103549A

CN114103549A - Force output device and mounting and testing equipment for half shaft of electric automobile

Info

Publication number: CN114103549A
Application number: CN202010867047.3A
Authority: CN
Inventors: 沈阳; 陈煦
Original assignee: BMW Brilliance Automotive Ltd
Current assignee: BMW Brilliance Automotive Ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2022-03-01
Anticipated expiration: 2040-08-26
Also published as: CN114103549B

Abstract

The invention relates to a force output device (1), wherein the force output device (1) comprises a base (2), a transmission mechanism (5), a digital tightening tool (6) and an actuating mechanism (7), the digital tightening tool (6) can transmit input torque to the actuating mechanism (7) through the transmission mechanism (5), the actuating mechanism (7) comprises a first acting arm (35) and a second acting arm (36), when the digital tightening tool (6) rotates along a first rotating direction, the first acting arm (35) and the second acting arm (36) can move oppositely, and when the digital tightening tool (6) rotates along a second rotating direction opposite to the first rotating direction, the first acting arm (35) and the second acting arm (36) can move oppositely. The invention also relates to a mounting and testing device for the half shaft of the electric automobile.

Description

Force output device and mounting and testing equipment for half shaft of electric automobile

Technical Field

The invention relates to a force output device. In addition, the invention also relates to a mounting and testing device for the half shaft of the electric automobile.

Background

A half shaft of an electric vehicle, also called a drive shaft, is a member that transmits torque between an electric motor and drive wheels. The inner end part and the outer end part of the half shaft are respectively provided with a universal joint and are respectively connected with a spline groove in the motor and the inner ring of the hub bearing through a spline on the universal joint.

In the prior art, the operator usually manually inserts the half shafts of the electric vehicle into the electric motor by means of a force transmission and then tests them for installation reliability. The force transmission device comprises a housing, a first transmission, a second transmission and an actuator, for example. An operator respectively applies input torque to the first transmission mechanism and the second transmission mechanism by using a wrench so as to realize the installation and the test of the half shaft.

Before the process, the left half shaft, the right half shaft and the motor are fixed on a bracket, and the pre-positioning of the spline teeth of the half shafts in the corresponding spline grooves of the motor is completed. The operator then performs a prepositioning of the force transmission device relative to the half-shafts. After the installation preparation is complete, the operator applies an input torque to the first gear of the force transmission with the wrench to effect simultaneous pushing of the two half-shafts into the splined recesses of the electric motor. After the insertion process has been completed, the operator applies an input torque to the second gear mechanism of the force transmission device with the aid of the wrench, so that a pull-out force is obtained for each of the two half shafts. When the pull-out force is insufficient to pull the half-shafts out of the spline grooves of the motor, the mounting of the half-shafts is confirmed to be reliable.

However, this installation and testing process has the following disadvantages: the input torque applied to the input shaft by the operator with the aid of the wrench is unstable, which is greatly influenced by the skill and experience of the operator; the operation process is complex and cannot be linked to a production quality monitoring system for real-time monitoring; the operator needs to work with bending over, which is ergonomically disadvantageous; the pre-positioning and pre-adjustment process before mounting the half-shafts is very complicated and time-consuming, affecting the production cycle time.

Disclosure of Invention

The object of the present invention is therefore to provide an improved force output device in relation to the prior art and an improved mounting and testing device for a half shaft of a motor vehicle in relation to the prior art.

The object of the invention is achieved by a force output device comprising a base, a transmission, a digital tightening tool and an actuator, wherein the digital tightening tool can transmit an input torque to the actuator via the transmission, the actuator comprises a first actuating arm and a second actuating arm, wherein the first actuating arm and the second actuating arm can move in opposite directions when the digital tightening tool rotates in a first direction of rotation, and the first actuating arm and the second actuating arm can move in opposite directions when the digital tightening tool rotates in a second direction of rotation opposite to the first direction of rotation.

The force output device according to the invention can be used in particular for mounting and testing half shafts of motor vehicles, such as electric motor vehicles. Without being limited thereto, the force output device of the invention can also be used for any object to be subjected to pressure or tensile force on both sides or for two objects to be subjected to a movement towards and/or away from each other.

According to the invention, the force output device transmits the input torque to the actuating mechanism via the transmission mechanism by means of the digital tightening tool, so that compared with a torque input method by means of a hand wrench, the operation is more convenient and at the same time a more stable and precise input torque can be achieved, in order to ensure that the object to be subjected to the force receives a stable force. In addition, the actuating mechanism comprises a first acting arm and a second acting arm, when the digital tightening tool rotates along a first rotating direction, the first acting arm and the second acting arm can move in opposite directions, and when the digital tightening tool rotates along a second rotating direction opposite to the first rotating direction, the first acting arm and the second acting arm can move away from each other. Thus, the pressing operation and the pulling operation of the object to be subjected to force application can be selectively carried out by means of only one stationary digital tightening tool.

According to one embodiment of the invention, the base comprises a lower stationary part and an upper rotary part, the rotary part being rotatably supported on the stationary part, and the transmission, the digital tightening tool and the actuator being mounted on the rotary part of the base by means of the holding part and the transmission base plate. By arranging the base rotatable, it is achieved that the force take-off device, when not in use, is rotated into a non-working position in which it does not interfere with the operation of the production line.

According to one embodiment of the invention, the force output device further comprises a transverse slide mechanism by means of which the actuator can be moved in the transverse direction and a longitudinal slide mechanism by means of which the actuator can be moved in the longitudinal direction. In this way, the actuator of the force output device can be moved further away from the working position, so that a larger working space is available for the operator on the production line.

According to one embodiment of the invention, the transverse slide rail mechanism comprises a transverse slide rail base plate, a transverse guide rail arranged on the upper side of the transverse slide rail base plate and a transverse slide block cooperating with the transverse guide rail, the longitudinal slide rail mechanism comprises a longitudinal slide rail base plate, a longitudinal guide rail arranged on the upper side of the longitudinal slide rail base plate and a longitudinal slide block cooperating with the longitudinal guide rail, the transverse slide rail mechanism is fixedly connected with the rotating part of the base by means of the transverse slide rail base plate, the transverse slide block is mounted on the lower side of the longitudinal slide rail base plate, and the longitudinal slide block is mounted on the lower side of the transmission mechanism base plate. In this way, a transverse and longitudinal displacement of the actuator on the base is achieved in a simple manner.

According to one embodiment of the invention, the force output device has a rotational locking mechanism for locking the rotational movement of the force output device in the operating position of the force output device. This ensures that the actuator always has a constant orientation relative to the object to be acted upon during operation of the force output device.

According to one embodiment of the invention, the rotary locking mechanism comprises a first fastening element fastened to the base plate of the longitudinal rail, a second fastening element fastened to the rotary part of the base, a third fastening element fastened to the fastening part of the base, a first link element, a second link element, a third link element and a pin element, the first link element being connected with its two ends in an articulated manner to the first fastening element and the second link element, respectively, the second link element being connected with its two ends in an articulated manner to the first link element and the second fastening element, respectively, the third link element being connected with its one end in an articulated manner to the first link element and the second link element, and the third link element being connected with its other end in an articulated manner to the pin element, the second fastening element and the third fastening element having a vertical bore for the pin element. In this way, the longitudinal movement of the actuator is coupled with the rotational movement of the base, i.e. the rotational movement of the base is locked when both the longitudinal movement of the actuator and the rotational movement of the base reach a predetermined position.

According to one embodiment of the invention, the transmission comprises an input shaft, one free end of which can be engaged by the digital tightening tool, on which input shaft a first gear wheel is mounted, which can interact with a component of the actuator. In this way, a transmission of the input torque of the digital tightening tool via the gear mechanism to the actuator is achieved in a simple manner.

According to one embodiment of the invention, the actuator further comprises a first toothed rack, a second toothed rack and a holding arrangement, by means of which the first toothed rack and the second toothed rack are mounted on the gear housing of the gear so as to be displaceable in the longitudinal direction, the first toothed rack and the second toothed rack being arranged vertically on either side of the first gearwheel and engaging with the first gearwheel, the first actuating arm and the second actuating arm being able to move together with one of the toothed racks. In this way, a simple construction is achieved in that the first and second actuating arms of the actuator can be selectively moved towards and away from each other by means of only one digital tightening tool.

According to one embodiment of the invention, the first actuating arm is mounted fixedly on the first toothed rack and movably on the second toothed rack, and the second actuating arm is mounted movably on the first toothed rack and fixedly on the second toothed rack. In this way, it is achieved in a simple manner that the first and second actuating arms can each move together with one of the toothed racks.

Advantageously, the transmission mechanism further comprises a manual adjustment unit comprising a handle and a rotary shaft extending parallel to the input shaft, on which a second gear is mounted, which engages with a third gear mounted on the input shaft. By means of the manual adjustment unit, the initial distance of the first and second working arms of the actuator can be adjusted and thus the distance of the first and second working arms can be adjusted according to the actual requirements.

According to a further development of the invention, the first and second actuating arms are each mounted movably on a first and a second toothed rack, a first driver for driving the first actuating arm together being provided on the first toothed rack and a second driver for driving the second actuating arm together being provided on the second toothed rack, a first spring arrangement being provided on the first toothed rack for pressing the first actuating arm against the first driver and a second spring arrangement being provided on the second toothed rack for pressing the second actuating arm against the second driver. In this case, since both the first and second actuating arms are mounted in a floating manner on the first and second toothed racks, the position of both the first and second actuating arms on the toothed racks can be changed manually. In this way, the initial distance between the first and second working arms can be adjusted without the manual adjustment unit.

According to one embodiment of the invention, stops are provided on the transverse rail mechanism, the longitudinal rail mechanism and/or the base. By means of these stops it can be ensured in a simple manner that the actuator of the force output device reaches the operating position in the transverse direction, the longitudinal direction and/or the rotational direction. Preferably, sensors are provided on the transverse rail mechanism, the longitudinal rail mechanism and/or the base for activating the digital tightening tool upon detection of the force output device reaching the operating position. In this way, it is possible to prevent the digital tightening tool from being activated by mistake in the inoperative position of the force output device, so that injury to the operator can be avoided. In addition, the data from the digital tightening tool and the data from the sensors may also be linked to a production quality monitoring system for real-time monitoring.

The invention also claims a mounting and testing device for half-shafts of electric vehicles, comprising a force output device according to the invention and a pallet means for supporting the half-shafts.

According to one embodiment of the invention, the pallet device comprises a base plate, a support column and two sliding supports, on which the electric motor of the electric vehicle can be mounted and on which the two half shafts of the electric vehicle can be mounted in each case.

According to one embodiment of the invention, the sliding support comprises a sliding carriage which can be displaced in the longitudinal direction on the base plate by means of a guide rail mechanism, and a carrier mechanism which is fixedly mounted on the sliding carriage and has an arc-shaped bearing for bearing a half shaft section of the half shaft.

According to one embodiment of the invention, the axle shaft section has a diameter transition, such as a groove, and the arc-shaped support has a surface structure which is complementary to the shape of the diameter transition of the axle shaft section. The relative movement of the half shaft and the carrier mechanism in the longitudinal direction can thereby be locked, i.e. the positioning of the half shaft in the axial direction is achieved without hindering the rotation of the half shaft, in order to slightly rotate the half shaft, if necessary, in order to align the splines of the half shaft with the spline grooves of the electric motor.

Preferably, the bracket means has an engagement portion, such as a recess, for engagement with an actuating arm of the actuator. It is further preferred that an auxiliary support is provided on the sliding frame for supporting the wheel hub and the brake disk of the axle half mounted on the sliding frame. Hereby it is achieved that the axle shaft is supported more smoothly on the pallet means.

Drawings

The invention is explained in detail below with the aid of embodiments with reference to the drawings. In the present invention, the same members or members having the same function have the same reference numerals. For purposes of clarity, only some of the components have been labeled with reference numbers in the figures.

Fig. 1 to 3 show views of a force output device according to the invention from different perspectives;

figures 4 and 5 show perspective views of the rotating part of the base and the fixed part of the base, respectively, in isolation;

FIG. 6 shows a partial view of a lateral slide rail mechanism;

FIG. 7 shows a partial view of a longitudinal slide rail mechanism;

figures 8 and 9 show a side view and a partial perspective view, respectively, of the transmission mechanism;

figures 10 to 11 show perspective views of a first embodiment of the actuator;

FIG. 12 shows a view of a second embodiment of an actuator;

fig. 13 shows a perspective view of the rotation locking mechanism.

FIG. 14 illustrates a mounting and testing apparatus for an automotive axle shaft.

Detailed Description

Fig. 1 to 3 show views of a force output device 1 according to the invention from different perspectives. In order to illustrate the structure of the force output device 1 according to the invention more clearly, a coordinate system is drawn in fig. 1, wherein the X-axis represents the transverse direction of the force output device, the Y-axis represents the longitudinal direction of the force output device and the Z-axis represents the vertical direction.

The force output device 1 according to the invention essentially comprises a base 2, a transverse slide mechanism 3, a longitudinal slide mechanism 4, a transmission mechanism 5, a digital tightening tool 6 (e.g. an electric wrench) and an actuator 7.

The base 2 comprises, for example, an upper rotary part 18 and a lower stationary part 8, the stationary part 8 being fixedly mounted on the ground, the rotary part 18 being rotatably supported on the stationary part 8, for example by means of bearings. The transverse slide mechanism 3 is located above the rotating part 18 of the base 2 and is fixedly connected with the rotating part 18 by means of the transverse slide base plate 9. The longitudinal slide mechanism 4 is located above the transverse slide mechanism 3 and is mounted on the transverse slide mechanism 3 by means of a longitudinal slide base plate 10. The transmission 5, the digital tightening tool 6 and the actuator 7 are mounted above the longitudinal slide mechanism 4 by means of a transmission base plate 11, and the digital tightening tool 6 can be operatively connected to the actuator 7 via the transmission 5. The transverse slide mechanism 3, the longitudinal slide mechanism 4, the transmission mechanism 5, the digital tightening tool 6 and the actuator 7 can rotate together with the rotary part 18 of the base 2 relative to the fixed part 8 of the base 2.

Fig. 4 and 5 show perspective views of the rotating part 18 of the base 2 and the stationary part 8 of the base 2, respectively, separately. As can be seen from fig. 4, the rotating portion 18 has a shaft member 13 in the center. In the assembled state of the force output device 1, the rotary part 18 is arranged with the shaft part 13 in the recess 14 of the stationary part 8 of the base 2, whereby the rotary part 18 is rotatably supported on the stationary part 8. Optionally, a rolling bearing is provided between the shaft element 13 of the rotating part and the recess 14 of the stationary part in order to facilitate the rotation of the rotating part 18 on the stationary part 8.

Fig. 6 shows a partial perspective view of the transverse slide mechanism 3. The transverse-rail mechanism 3 comprises here a transverse-rail base plate 9, at least one transverse rail 15 and a transverse slide 16 which interacts with the transverse rail. In the present exemplary embodiment, the transverse-rail mechanism 3 has two transverse rails 15, and each transverse rail 15 is assigned two transverse sliders 16. Two transverse rails 15 are arranged on the upper side of the transverse rail base plate 9 and extend parallel to one another, and transverse sliders 16 are mounted on the underside of the longitudinal rail base plate 10 (not shown in fig. 6) and have receptacles for cooperation with the transverse rails 15. The longitudinal slide base plate 10 and the transverse slide 16 mounted thereon can thus be moved together on the transverse rail 15 in the transverse direction X.

Fig. 7 shows a partial perspective view of the longitudinal slide mechanism 4. Similar to the transverse slide mechanism 3, the longitudinal slide mechanism 4 comprises a longitudinal slide base plate 10, at least one longitudinal guide rail 19 and a plurality of longitudinal slides 20. In the present exemplary embodiment, the longitudinal rail mechanism 4 has two longitudinal rails 19, and each longitudinal rail 19 is assigned two longitudinal slides 20. Two longitudinal rails 19 are arranged on the upper side of the longitudinal rail base plate 10 and extend parallel to one another, and a longitudinal slide 20 is mounted on the lower side of the gear mechanism base plate 11 and has a receptacle for interacting with the longitudinal rails 19. The gear mechanism base plate 11 and the longitudinal slide 20 mounted thereon can thus be moved together on the longitudinal guide 19 in the longitudinal direction Y.

Fig. 8 shows a partial side view of the transmission 5. The transmission mechanism 5 includes a transmission mechanism housing 22, and the transmission mechanism housing 22 is fixed on the transmission mechanism substrate 11. The input shaft 12 for the gear mechanism 5 is rotatably mounted on the gear mechanism base plate 11 by means of a holding element 23. One free end 24 of the input shaft 12 is engageable with the digital tightening tool 6 (not shown in fig. 8) to receive input torque from the digital tightening tool 6. A first gear wheel 25 is mounted on the input shaft 12 in a rotationally fixed manner, which first gear wheel 25 can interact with components of the actuator 7 (not shown in fig. 8), so that the input torque from the digital tightening tool 6 is transmitted to the actuator 7 via the input shaft 12. In addition, it can be seen from fig. 8 that the transmission 5 can also have a manual adjustment unit 26, by means of which it is possible to transmit an input torque to the actuator 7 manually via the input shaft 12 independently of the digital tightening tool 6. The manual adjustment unit 26 comprises a handle 27 and a rotary shaft 28, the rotary shaft 28 being controllable to rotate by means of the handle 27, the rotary shaft 28 extending parallel to the input shaft 12 and being rotatably supported on the gear mechanism base plate 11 by means of a holding member 29 and/or the gear mechanism housing 22.

Fig. 9 shows a partial perspective view of the gear mechanism 5, wherein the side wall 21 of the gear mechanism housing 22 facing the actuator 7 is omitted for clarity. As can be seen from fig. 9, a second gear wheel 30 is arranged on the rotational shaft 28 in a rotationally fixed manner, and a third gear wheel 31 (here embodied as a toothed segment, for example) interacting with the second gear wheel 30 is arranged on the input shaft 12 in a rotationally fixed manner. Here, when the operator manually rotates the handle 27, the rotating shaft 28 rotates together with the second gear 30 provided thereon, and the input torque is transmitted from the rotating shaft 28 to the input shaft 12 and then to the actuator 7 by the meshing action of the second gear 30 and the third gear 31.

Fig. 10 and 11 show a partial perspective view of the actuator 7 from a different angle of view. The actuator 7 comprises a first rack 32, a second rack 33, a holding assembly 34, a first actuating arm 35 and a second actuating arm 36. The first and second

toothed racks

32, 33 are mounted on the gear housing 22 so as to be movable in the longitudinal direction Y by means of a holding assembly 34. The holding arrangement 34 here comprises a plurality of, for example four, holding blocks 45, each holding block 45 having a mounting surface 39 which is mounted on a side wall 21 (see, for example, fig. 8) of the gear housing 22 facing the actuator 7, and the holding blocks having a rack receptacle for receiving a rack on the side facing the

racks

32, 33. The first and second

toothed racks

32, 33 are each held in the rack receptacles with their first longitudinal edges 40 facing the holding block 45 and can be moved in the longitudinal direction Y.

In addition, a first rack 32 and a second rack 33 are respectively provided on both sides of the first gear 25 in the vertical direction Z and engaged with the first gear, whereby rotation of the first gear 25 can move the two

racks

32, 33 respectively in opposite directions. The first and

second action arms

35 and 36 have an action arm holding block 41. The

racks

32, 33 are supported with their second longitudinal edges 42 facing away from the holding arrangement in the receptacles of the actuating arm holding block 41. The first and

second action arms

35, 36 have facing action surfaces for directly or indirectly loading an object to be pressed with a force. Preferably, the action arm holding block 41 is constructed identically to the holding block 45 of the holding assembly, whereby the variety of components can be reduced. However, it is also conceivable for the actuating arm retaining block 41 to be integrally formed on the first actuating arm 35 and the second actuating arm 36.

The first and

second actuating arms

35, 36 can each follow one of the racks for movement therewith. In this regard, according to a simple embodiment, for example, the first actuating arm 35 is mounted fixedly on one of the toothed racks, for example the first toothed rack 32, and movably on the other toothed rack, for example the second toothed rack 33, while the second actuating arm 36 is mounted movably on the first toothed rack 32 and fixedly on the second toothed rack 33. Thereby, the first operating arm 35 can move together with the first rack 32, and the second operating arm 36 can move together with the second rack 33. When the first gear wheel 25 is turned in the clockwise direction according to fig. 10, the first action arm 35 moves to the right and the second action arm 36 moves to the left, i.e. the first action arm 35 and the second action arm 36 move away from each other. When the first gear 25 is rotated in the counterclockwise direction according to fig. 10, the first action arm 35 moves leftward and the second action arm 36 moves rightward, i.e., the first action arm 35 and the second action arm 36 move toward each other.

Fig. 12 shows another embodiment for realizing that the first and

second actuating arms

35, 36 can each follow one of the racks for movement together. In fig. 12, the first and

second actuating arms

35, 36 are hidden for clarity. In this exemplary embodiment, the first actuating arm 35 is mounted movably on the first and second

toothed racks

32, 33 by means of the two right-hand actuating arm holding blocks 41, and the second actuating arm 36 is mounted movably on the first and second

toothed racks

32, 33 by means of the two left-hand actuating arm holding blocks 41. That is, here, both the first and

second operating arms

35 and 36 are supported on the first and

second racks

32 and 33 in a floating manner. A first driver 37 for driving the first actuating arm 35 together is arranged on the first toothed rack 32 and a second driver 38 for driving the second actuating arm 36 together is arranged on the second toothed rack 33. In addition, a first spring assembly 43 is provided on the first rack 32 for pressing the arm holding block 41 of the first operating arm 35 against the first driver 37, and a second spring assembly 44 is provided on the second rack 33 for pressing the arm holding block 41 of the second operating arm 36 against the second driver 38. Thereby, the first operating arm 35 can move together with the first rack 32, and the second operating arm 36 can move together with the second rack 33. In addition, since both the first and

second action arms

35 and 36 are floatingly supported on the first and

second racks

32 and 33, the positions of both the first and

second action arms

35 and 36 on the racks are manually changeable. Thus, the initial distance between the first and second working

arms

35, 36 can be adjusted without the manual adjustment unit 26. It is also possible for the first and

second drivers

37, 38 to be movable together with the respective actuating arms on the toothed rack and to be locked on the toothed rack in the desired position.

By means of the force output device 1 according to the invention, it is possible to apply pressure or tensile force to one object on both sides simultaneously or to move two objects toward and away from each other. In the force output device 1 according to the invention, the orientation of the actuators (or the working arms 35, 36) can be adjusted by providing the rotatable base 2, the position of the working arms in the transverse direction X can be adjusted by providing the transverse slide mechanism 3, the position of the working arms in the longitudinal direction Y can be adjusted by providing the longitudinal slide mechanism 4, and the initial distance between the first working arm 35 and the second working arm 36 can be adjusted by the manual adjustment unit 26. In addition, by providing a digital tightening tool 6, the input torque can be precisely controlled and thus a precise force output of the actuator can be achieved. The force output device 1 according to the invention thus enables, as a whole, precise positioning and orientation relative to the object to which a force is to be applied and a precise force output.

In addition, in order to lock the force output device 1 in the operating position to prevent the force output device from being accidentally rotated during operation, a rotation locking mechanism 17 is provided on the force output device 1, see for example fig. 13. The rotation lock mechanism 17 includes a first fixing member 46 fixed to the longitudinal rail base plate 10, a second fixing member 47 fixed to the rotating portion 18 of the base 2, a third fixing member 48 fixed to the fixing portion 8 of the base 2, a first link member 49, a second link member 50, a third link member 51, and a pin member 52. The first link member 49 is pivotally (e.g., hingedly) connected at both ends thereof to the first fixed member 46 and the second link member 50, respectively. The second link member 50 is pivotally (e.g., hingedly) connected at both ends thereof to the first link member 49 and the second fixed member 47, respectively. The third link member 51 is pivotally (e.g., hingedly) connected at one end thereof to the first link member 49 and the second link member 50, and the third link member 51 is pivotally (e.g., hingedly) connected at the other end thereof to the pin member 52. The first link element 49, the second link element 50 and the third link element 51 are connected together by a joint axis 53. The pin element 52 can be guided in a vertical through hole of the second fixing element. In addition, a vertical bore is also provided in the third fixing element 48. In the inoperative position of the force output device 1, the pin element 52 is not inserted into the vertical bore of the third fixing element, and the vertical through-bore of the second fixing element is not aligned with the vertical bore of the third fixing element. However, in the operating position of the force output device 1, by rotation of the rotary part 18 of the base 2, the vertical through hole of the second fixing element is aligned with the vertical hole of the third fixing element, and by lateral movement of the lateral slide mechanism 3, the pin element 52 of the rotation locking mechanism is simultaneously inserted into the vertical through hole of the second fixing element and the vertical hole of the third fixing element, so that the rotation locking mechanism locks the rotary movement of the rotary part 18 of the base 2 relative to the fixed part 8.

The force output device 1 according to the invention can be used particularly advantageously for mounting and testing half shafts of electric vehicles. Fig. 14 shows a mounting and testing device for a half shaft of a motor vehicle, which mounting and testing device comprises a force output device 1 according to the invention and a tray device 54 for supporting the half shaft.

As can be seen from fig. 14, the tray device 54 mainly includes: a bottom plate 55; a plurality of support posts 56 and two sliding support mechanisms 57. In operation of the mounting and testing device according to the invention, the electric motor and the bridge (not shown) of the electric vehicle are placed on the pillar 56 and the two half-shafts of the electric vehicle are each placed on a sliding support structure 57.

Each sliding support mechanism 57 includes a sliding frame 58 and a bracket mechanism 60. The carriage 58 can be displaced on the base plate 55 in the longitudinal direction Y by means of a rail mechanism, the carriage mechanism 60 being fixedly mounted on the carriage 58 and thus being displaceable together with the carriage 58 on the base plate 55 in the longitudinal direction Y. The bracket mechanism 60 has an arc-shaped support 63 for supporting one half shaft section of the half shaft. Advantageously, the axle shaft section has a diameter discontinuity, such as a recess, and the arc-shaped abutment 63 has an arc-shaped surface structure which is complementary to the diameter discontinuity of the axle shaft section, so that the axle shaft is supported immovably in the longitudinal direction Y (or axial direction of the axle shaft) on the bracket mechanism 60, but the rotational movement of the axle shaft relative to the arc-shaped abutment 63 of the bracket mechanism 60 is not restricted.

In addition, the carrier mechanism 60 has engagement portions, for example recesses, for engagement with the actuating

arms

35, 36 of the actuator, whereby the actuating arms of the actuator 7 can bring the carrier mechanism 60 together with the axle shafts supported thereon in the longitudinal direction Y on the base plate 55 and thus effect the mounting and testing operation of the axle shafts.

In addition, for the auxiliary support of the axle shaft, an auxiliary support 59 is provided on the running carriage 58, which auxiliary support 59 comprises a plurality of, for example two, opposite support wheels 61 and support elements 62 for cooperation with the wheel hub and the brake disk of the axle shaft resting on the running carriage for supporting said wheel hub and brake disk.

The operation procedure when using the mounting and testing device according to the invention for mounting and testing half-shafts of electric vehicles is as follows:

first, the half shafts and the electric motor of the electric vehicle are mounted on the pallet means 54 and the pallet means is moved into a predetermined working position. In particular, the axle half shaft may be mounted, for example, on the arc-shaped abutment 63 of the bracket mechanism 60 in an axle half shaft section having a diameter discontinuity such that the diameter discontinuity of the axle half shaft section cooperates with a surface structure of the arc-shaped abutment to lock the axle half shaft against movement in the longitudinal direction Y relative to the arc-shaped abutment. Alternatively, the wheel hub and the brake disk at the end of the axle shaft are placed on the auxiliary bracket 59 at the same time to achieve more stable support of the axle shaft. If necessary, the height of the carriage 58 can be adjusted and the axle shafts slightly rotated to achieve alignment of the splines of the axle shafts with the spline grooves of the motor.

Subsequently, the force output device 1 is adjusted into the operating position. For example, a transverse stop for limiting the movement of the transverse slide in the transverse direction may be provided on the transverse slide mechanism 3, a longitudinal stop for limiting the movement of the longitudinal slide in the longitudinal direction may be provided on the longitudinal slide mechanism 4, and a rotation stop for limiting the further rotational movement of the rotary part 18 may be provided in the base. When the transverse slide 16, the longitudinal slide 20 and the rotary part 18 of the force output device are in each case in contact with the respective stop, the force output device now reaches its operating position. In this process, the distance between the first and second actuating arms can also be changed, if necessary, by means of the manual adjustment unit 26, in order to ensure that the actuating

arms

35, 36 of the force output device can be brought into operative connection with the engagement sections of the support means 60 of the tray device 54 in the operating position of the force output device.

Optionally, sensors may be provided on the transverse slide mechanism, the longitudinal slide mechanism and/or the base to detect whether the force output device has reached the operating position. After determining that the force output device has reached the working position, the digital tightening tool is activated by a signal emitted by the sensor. In this way, it is possible to prevent the digital tightening tool from being activated by mistake in the inoperative position of the force output device, so that injury to the operator can be avoided.

According to a predetermined program, the digital tightening tool 6 first applies a first input torque which is transmitted via the gear mechanism 5 to the actuator 7 and moves the first and

second actuating arms

35, 36 towards each other by a predetermined stroke. In this case, the first and

second actuating arms

35, 36 each move a half shaft supported on the carrier device 54 by a predetermined stroke. After this step, the installation process of the half shafts of the electric vehicle has been completed.

The digital tightening tool 6 then applies a second input torque which has the opposite direction to the first input torque. If the second input torque is not sufficient to achieve a deviating movement of the first and second working arms (or of the two half shafts), the mounting of the half shafts is determined to be reliable. If the second input torque effects a deviating movement of the first and second action arms 35, 36 (i.e., the half shaft is pulled out of the motor), it is determined that the installation of the half shaft is unreliable. In this case, the half shaft mounting and testing process needs to be performed anew.

The above examples illustrate or describe possible embodiments of the invention, but the invention is not limited to the above embodiments. It is to be noted here that various different combinations of the individual embodiments with one another are also possible.

Finally, it is pointed out that, in order to facilitate the understanding of the structure of the force output device and the pallet device according to the invention, the force output device and the pallet device are not shown to scale and/or to be enlarged and/or reduced in part in the figures.

List of reference numerals

1 force output device

2 base

3 transverse sliding rail mechanism

4 longitudinal sliding rail mechanism

5 Transmission mechanism

6 digital tightening tool

7 executing mechanism

8 fixed part

9 transverse sliding rail base plate

10 longitudinal slide rail base plate

11 drive mechanism base plate

12 input shaft

13 shaft component

14 concave part

15 transverse guide

16 transverse sliding block

17 rotation locking mechanism

18 rotating part

19 longitudinal guide rail

20 longitudinal slide block

21 side wall

22 drive mechanism casing

23 holding element

24 free end

25 first gear

26 Manual adjustment unit

27 handle

28 rotating shaft

29 holding member

30 second gear

31 third gear

32 first rack

33 second rack

34 holding assembly

35 first action arm

36 second action arm

37 first driver

38 second driving member

39 mounting surface

40 first longitudinal edge

41 action arm holding block

42 second longitudinal edge

43 first spring assembly

44 second spring assembly

45 holding block

46 first fixing element

47 second fixing element

48 third fixing element

49 first link member

50 second link element

51 third link element

52 pin element

53 articulated shaft

54 tray device

55 bottom plate

56 support

57 sliding support mechanism

58 sliding rack

59 auxiliary support

60 bracket mechanism

61 supporting wheel

62 bracket element

63 arc support

Transverse direction of X-force output device

Longitudinal direction of Y force output device

Z vertical direction.

Claims

1. Force output device (1), force output device (1) includes base (2), drive mechanism (5), digital tightening tool (6) for example electric spanner and actuating mechanism (7), and digital tightening tool (6) can transmit input torque to actuating mechanism (7) via drive mechanism (5), actuating mechanism (7) include first effect arm (35) and second effect arm (36), when digital tightening tool (6) rotate along first direction of rotation, can realize the relative motion of first effect arm (35) and second effect arm (36), when digital tightening tool (6) rotate along the second direction of rotation opposite with first direction of rotation, can realize the motion that deviates from of first effect arm (35) and second effect arm (36).

2. Force output device (1) according to claim 1, characterized in that the base (2) comprises a lower, fixed part (8) and an upper, rotating part (18), the rotating part (18) being rotatably supported on the fixed part (8), the transmission (5), the digital tightening tool (6) and the actuator (7) being mounted on the rotating part (18) of the base (2) by means of a holding part and a transmission base plate (11).

3. The force output device (1) according to claim 2, characterized in that the force output device (1) further comprises a transverse slide mechanism (3) by means of which the actuator (7) can be moved in the transverse direction (X) and a longitudinal slide mechanism (4) by means of which the actuator (7) can be moved in the longitudinal direction (Y).

4. The force output device (1) according to claim 3, characterized in that the transverse slide mechanism (3) comprises a transverse slide base plate (9), a transverse guide rail (15) arranged on the upper side of the transverse slide base plate (9) and a transverse slider (16) cooperating with the transverse guide rail (15), the longitudinal slide mechanism (4) comprises a longitudinal slide base plate (10), a longitudinal guide rail (19) arranged on the upper side of the longitudinal slide base plate (10) and a longitudinal slider (20) cooperating with the longitudinal guide rail (19), the transverse slide mechanism (3) is fixedly connected with the rotating part (18) of the base (2) by means of the transverse slide base plate (9), the transverse slider (16) is mounted on the lower side of the longitudinal slide base plate (10), and the longitudinal slider (20) is mounted on the lower side of the transmission mechanism base plate (11).

5. Force output device (1) according to claim 4, characterized in that the force output device (1) has a rotational locking mechanism (17) for locking the rotational movement of the force output device (1) in the working position of the force output device.

6. The force output device (1) according to claim 5, characterized in that the rotation-locking mechanism comprises a first fixing element (46) fixed on the longitudinal slide base plate (10), a second fixing element (47) fixed on the rotating part (18) of the base (2), a third fixing element (48) fixed on the fixing part (8) of the base (2), a first link element (49), a second link element (50), a third link element (51) and a pin element (52), the first link element (49) being hingedly connected with its two ends to the first fixing element (46) and the second link element (50), respectively, the second link element (50) being hingedly connected with its two ends to the first link element (49) and the second fixing element (47), respectively, the third link element (51) being hingedly connected with its one end to the first link element (49) and the second link element (50), and the third connecting rod element (51) is connected with the other end thereof in a hinged manner with the pin element (52), and the second fixing element and the third fixing element are provided with vertical holes for the pin element.

7. Force output device (1) according to one of claims 1 to 6, characterized in that the transmission mechanism (5) comprises an input shaft (12), one free end (24) of the input shaft (12) being engageable with the digital tightening tool (6), a first gear wheel (25) being mounted on the input shaft (12) and being able to cooperate with a component of the actuator (7).

8. The force output device (1) according to claim 7, characterized in that the actuator (7) further comprises a first toothed rack (32), a second toothed rack (33) and a holding assembly (34), the first toothed rack (32) and the second toothed rack (33) being supported on a gear housing (22) of the gear (5) by means of the holding assembly (34) so as to be movable in the longitudinal direction (Y), the first toothed rack (32) and the second toothed rack (33) being arranged on either side of the first toothed gear (25) in the vertical direction (Z) and being in engagement with the first toothed gear, the first actuating arm (35) and the second actuating arm (36) being movable together with one of the toothed racks, respectively.

9. The force output device (1) according to claim 8, characterized in that the first actuating arm (35) is fixedly supported on the first toothed rack (32) and movably supported on the second toothed rack (33), and the second actuating arm (36) is movably supported on the first toothed rack (32) and fixedly supported on the second toothed rack (33).

10. The force output device (1) as claimed in claim 8, characterized in that the first actuating arm (35) and the second actuating arm (36) are each mounted displaceably on a first toothed rack (32) and a second toothed rack (33), a first driver (37) for driving the first actuating arm (35) together being provided on the first toothed rack (32) and a second driver (38) for driving the second actuating arm (36) together being provided on the second toothed rack (33), a first spring arrangement (43) being provided on the first toothed rack (32) for pressing the first actuating arm (35) against the first driver (37), and a second spring arrangement (44) being provided on the second toothed rack (33) for pressing the second actuating arm (36) against the second driver (38).

11. Force output device (1) according to claim 7, characterized in that the transmission mechanism (5) further comprises a manual adjustment unit (26), the manual adjustment unit (26) comprising a handle (27) and a rotational shaft (28), the rotational shaft (28) extending parallel to the input shaft (12), a second gear wheel (30) being mounted on the rotational shaft (28) and meshing with a third gear wheel (31) mounted on the input shaft (12).

12. Force output device (1) according to one of claims 3 to 6, characterized in that a stop is provided on the transverse slide mechanism, the longitudinal slide mechanism and/or the base, preferably a sensor is provided on the transverse slide mechanism, the longitudinal slide mechanism and/or the base, for activating the digital tightening tool upon detection of the force output device reaching the operating position.

13. Mounting and testing device for half-shafts of electric vehicles, comprising a force output device (1) according to any one of claims 1 to 12 and a tray device (54) for supporting the half-shafts.

14. The mounting and testing device according to claim 13, characterized in that the tray means (54) comprises a base plate (55), a pillar (56) and two sliding support mechanisms (57), the electric motor of the electric vehicle being able to be placed on the pillar (56) and the two half-shafts of the electric vehicle being able to be placed on one sliding support mechanism (57) each.

15. The mounting and testing device according to claim 14, characterized in that the sliding support means (57) comprise a sliding carriage (58) and a bracket means (60), the sliding carriage (58) being displaceable on the base plate (55) in the longitudinal direction (Y) by means of a rail means, the bracket means (60) being fixedly mounted on the sliding carriage (58), the bracket means (60) having an arc-shaped abutment (63) for bearing one half-shaft section of the half-shaft, preferably the half-shaft section having a diameter discontinuity, such as a groove, the arc-shaped abutment (63) having a surface structure complementary to the shape of the diameter discontinuity of the half-shaft section.

16. The mounting and testing device according to claim 15, characterized in that the bracket means (60) has an engagement portion, such as a recess, for engaging the actuating arm of the actuator (7), and preferably an auxiliary bracket (59) is provided on the carriage (58) for supporting a wheel hub and a brake disc mounted on one end of the axle shaft.