Power assembly offset combination device

Abstract

The invention discloses a power assembly offset combination device, and relates to the technical field of vehicle assembly, the power assembly offset combination device comprises a combination tray, an offset tray and a locking piece; the combined tray is provided with a first positioning part and a second positioning part, the offset tray is arranged on the upper side of the combined tray and can move in the horizontal direction relative to the combined tray, the offset tray is used for bearing a power assembly, and the offset tray is provided with a matching part; the locking piece is movably installed on the combined tray in the vertical direction, the locking piece is provided with a locking position and an unlocking position in the moving stroke, in the locking position, the locking piece and the matching part are matched in a locking mode so as to position the offset tray in the horizontal direction, and in the unlocking position, the locking piece unlocks the offset tray so as to lock the offset tray. Therefore, the offset tray can move along the horizontal direction relative to the combined tray. According to the technical scheme, the offset tray can move in the horizontal direction relative to the combined tray so as to achieve the technical effect of adjusting the size of the gap in the horizontal direction.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle assembly, and in particular to a powertrain offset assembly device. Background Art

[0002] During the automobile manufacturing process, when the powertrain is dynamically assembled to the vehicle body, a certain layout design gap (10mm or even larger safety gap) must be met, otherwise assembly interference will occur and the assembly cannot be completed smoothly.

[0003] After the assembly tooling in the prior art is placed on the powertrain, body, and other structures, the gap will be determined and cannot be changed, and the assembly quality cannot be guaranteed. Summary of the invention

[0004] The main purpose of the present invention is to provide a powertrain offset assembly device, which aims to enable the assembly function to have the function of adjusting the gap size to ensure the assembly quality.

[0005] To achieve the above-mentioned purpose, the present invention provides a powertrain offset assembly device for assembling a vehicle body, a transmission shaft, and a powertrain, and is characterized in that the powertrain offset assembly device comprises: an assembly tray, an offset tray and a locking member; the assembly tray is provided with a first positioning portion and a second positioning portion, the first positioning portion is used to position the transmission shaft, and the second positioning portion is used to position the vehicle body; the offset tray is arranged on the upper side of the assembly tray and can move in a horizontal direction compared with the assembly tray, the offset tray is used to carry the powertrain, and the offset tray is provided with a matching portion; the locking member is movably installed with the assembly tray in an up-and-down direction, and has a locking position and an unlocking position in a movable stroke, in the locking position, the locking member is locked and matched with the matching portion to position the offset tray in the horizontal direction, and in the unlocking position, the locking member releases the lock on the offset tray to allow the offset tray to move in the horizontal direction compared with the assembly tray.

[0006] In one embodiment, the matching portion includes a matching hole opened on the lower side of the offset tray, and the locking member includes a locking rod.

[0007] In one embodiment, the matching hole penetrates the offset tray in the up-down direction, and the locking rod includes a locking section and an unlocking section, and the unlocking section is located below the locking section, wherein the size of the locking section is adapted to the size of the matching hole, and the outer diameter of the unlocking section is smaller than the outer diameter of the locking section.

[0008] In one embodiment, the locking rod further includes a connecting section connecting the locking section and the unlocking section, and an outer diameter of the connecting section is gradually reduced in a direction approaching the unlocking section.

[0009] In one embodiment, the difference between the diameter of the matching hole and the diameter of the unlocking section is greater than or equal to 10 mm.

[0010] In one embodiment, the powertrain offset assembly device further comprises:

[0011] A matching shaft extending in a horizontal direction and fixedly arranged relative to the unlocking section;

[0012] A driving member, wherein the middle portion of the driving member is rotatably connected to the combined tray along a horizontal axis, one end of the driving member forms a handle, and the other end is provided with a strip through hole penetrating along a horizontal direction, and the matching shaft passes through the strip through hole.

[0013] In one embodiment, the assembly pallet is provided with two grooves, which are spaced apart in the up and down directions and correspond to the locking position and the unlocking position respectively; the powertrain biased assembly device also includes a protrusion, which is fixedly connected relative to the unlocking section and is used to cooperate with one of the two grooves.

[0014] In one embodiment, two locking members are provided and are spaced apart from each other, and the offset tray is provided with two matching portions, which are correspondingly arranged to the two locking members.

[0015] In one embodiment, the powertrain offset assembly device further comprises a plurality of rolling elements, and the plurality of rolling elements are disposed on a side of the offset tray facing the assembly tray, and are used for abutting against the assembly tray.

[0016] In one embodiment, the power assembly offset assembly device further includes a lifting mechanism, and the lifting mechanism is used to be drivingly connected to the assembly tray so that the assembly tray can move in an up-and-down direction.

[0017] The technical solution of the present invention is to provide a first positioning portion and a second positioning portion through a powertrain offset assembly device. Generally, two first positioning portions are arranged at intervals in the horizontal direction for positioning the transmission shaft, and the second positioning portion is arranged between the two first positioning portions for positioning with the vehicle body; the offset tray is used to carry the powertrain and position the powertrain on the offset tray; the offset tray can move in the horizontal direction compared to the assembly tray, so the corresponding position of the powertrain during assembly will change, thereby adjusting the gap size between the powertrain and the transmission shaft and the vehicle body in the horizontal direction to ensure the assembly quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of a powertrain offset assembly device provided by the present invention;

[0020] Figure 2 for Figure 1 A partial cross-sectional view of the offset assembly device of the middle powertrain in the AA direction;

[0021] Figure 3 for Figure 1 Partial structural diagram of the offset assembly device of the powertrain (the locking parts on the corresponding side from this perspective are hidden).

[0022] Description of Figure Numbers:

[0023] 100. Powertrain offset assembly device; 1. Assembly tray; 11. First positioning portion; 12. Second positioning portion; 2. Offset tray; 21. Matching portion; 211. Matching hole; 3. Locking member; 31. Locking rod; 311. Locking section; 312. Unlocking section; 4. Matching shaft; 5. Driving member; 6. Protrusion; 7. Groove.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] During the automobile manufacturing process, when the powertrain is dynamically assembled to the vehicle body, a certain layout design clearance (10mm or even larger safety clearance) must be met, otherwise there will be assembly interference and the assembly cannot be completed smoothly. After the assembly tooling in the prior art is placed on the powertrain, vehicle body, etc., the clearance is determined and cannot be changed, and the assembly quality cannot be guaranteed.

[0029] The invention provides a powertrain offset assembly device.

[0030] See also Figure 1 In one embodiment of the present invention, the powertrain offset assembly device 100 is used to assemble a vehicle body, a transmission shaft, and a powertrain, and is characterized in that the powertrain offset assembly device 100 comprises: an assembly tray 1, an offset tray 2, and a locking member 3; the assembly tray 1 is provided with a first positioning portion 11 and a second positioning portion 12, the first positioning portion 11 is used to position the transmission shaft, and the second positioning portion 12 is used to position the vehicle body; the offset tray 2 is provided on the upper side of the assembly tray 1, and can be horizontally arranged relative to the assembly tray 1 The offset tray 2 is movable in the vertical direction, and is used to carry the power assembly. The offset tray 2 is provided with a matching portion 21. The locking member 3 is movably installed with the combined tray 1 along the up and down directions, and has a locking position and an unlocking position in the movable stroke. In the locking position, the locking member 3 is locked and matched with the matching portion 21 to position the offset tray 2 in the horizontal direction. In the unlocking position, the locking member 3 releases the lock on the offset tray 2 to allow the offset tray 2 to move in the horizontal direction compared to the combined tray 1.

[0031] In the technical solution of the present invention, the powertrain offset assembly device 100 is provided with a first positioning portion 11 and a second positioning portion 12. Generally, two first positioning portions 11 are provided, which are arranged at intervals in the horizontal direction for positioning the transmission shaft, and the second positioning portion 12 is arranged between the two first positioning portions 11 for positioning with the vehicle body; the offset tray 2 is used to carry the powertrain and position the powertrain on the offset tray 2; the offset tray 2 can move in the horizontal direction compared to the assembly tray 1, so the position of the powertrain during assembly will change accordingly, thereby adjusting the gap size between the powertrain and the transmission shaft and the vehicle body in the horizontal direction to ensure the assembly quality. During the use of the powertrain offset assembly device 100, the assembly tray 1 and the offset tray 2 need to be lifted first, and then the position of the offset tray 2 in the horizontal direction is adjusted to achieve a suitable assembly gap. Since the assembly tray 1 and the offset tray 2 are not fixedly connected, they need to be fixedly connected during the lifting process of the assembly tray 1 and the offset tray 2 to prevent them from detaching from each other. Therefore, the offset tray 2 needs to have a relatively movable state and a relatively fixed state relative to the combined tray 1. Therefore, further, a locking member 3 is provided, and the locking member 3 is movably installed with the combined tray 1 in the up-down direction, and has a locking position and an unlocking position in the movable travel. In the locking position, the locking member 3 and the matching portion 21 are locked and matched to position the offset tray 2 in the horizontal direction. In the unlocking position, the locking member 3 releases the lock on the offset tray 2, so that the offset tray 2 can move in the horizontal direction relative to the combined tray 1. In addition, when the locking member 3 is in the locking position, it can also limit the offset tray 2 relative to the combined tray 1 in the up-down direction.

[0032] There are many ways to achieve locking. In one specific implementation, the matching portion 21 is set as a matching hole 211 opened on the lower side of the offset tray 2, and the locking member 3 is set as a locking rod 31. The locking rod 31 is extended in the up-down direction, and the matching hole 211 also penetrates in the up-down direction. This setting method has a simple structure and low cost, and it is convenient and simple to achieve the locking and unlocking state. If the diameters of the matching hole 211 and the locking rod 31 are both set to be constant, then the two cannot achieve a good technical effect, so improvements are made from the following aspects:

[0033] If unlocking is achieved by pulling the locking rod 31 out of the matching hole 211, after the offset tray 2 is adjusted in the horizontal direction, the locking rod 31 and the matching hole 211 are no longer corresponding in the vertical direction, and it is difficult to quickly adjust the position of the offset tray 2 so that the locking rod 31 and the matching hole 211 correspond in the vertical direction and are inserted accordingly to lock the offset tray 2. Therefore, in the embodiment of the present invention, the locking rod 31 can lock and unlock the offset tray in the process of pulling out the matching hole 211, and the locking member 3 will never completely detach from the matching hole 211. The matching hole 211 passes through the offset tray 2 in the vertical direction, and the locking rod 31 includes a locking section 311 and an unlocking section 312, wherein the unlocking section 312 is located below the locking section 311, wherein the size of the locking section 311 is adapted to the size of the matching hole 211, and the outer diameter of the unlocking section 312 is smaller than the outer diameter of the locking section 311. Among them, the aperture of the matching hole 211 can be set to be constant, but the locking rod 31 includes a locking section 311 and an unlocking section 312. The size of the locking section 311 is compatible with the size of the matching hole 211, so the locking section 311 is located in the matching hole 211, and locking can be achieved. When the locking section 311 is out of the matching hole 211, only the unlocking section 312 is located in the matching hole 211, and the outer diameter of the unlocking section 312 is smaller than the outer diameter of the locking section 311. Therefore, the two are in a clearance fit state. The offset tray 2 can be shaken with the locking pin as the center, so that the position in the horizontal direction can be adjusted. In order to ensure that the adjustable range is large enough to obtain a reasonable clearance value, the difference between the aperture of the matching hole 211 and the diameter of the unlocking section 312 is greater than or equal to 10 mm.

[0034] If the diameter of the locking section 311 remains consistent and is equivalent to the diameter of the matching hole 211, and after the locking section 311 exits the matching hole 211, the matching hole 211 will be offset with the position of the offset tray 2, so it is still difficult to quickly insert the locking section 311 into the matching hole 211, and it is necessary to adjust the position of the offset tray 2 several times to try to match. In order to quickly insert the locking section 311 into the matching hole 211 to reach the locking position. The locking rod 31 also includes a connecting section connecting the locking section 311 and the unlocking section 312, and the outer diameter of the connecting section is gradually reduced in the direction close to the unlocking section 312. The diameter of the locking section 311 near the connecting section is smaller than the aperture of the matching hole 211, and it is easy to insert into the matching hole 211. Even if there is a slight misalignment between the locking section 311 and the matching hole 211, the side wall abuts against the wall of the matching hole 211 during the process of the locking section 311 extending into the matching hole 211, so that the position of the offset tray 2 and the matching hole 211 can be corrected during the matching process. The locking section 311 can be quickly inserted into the matching hole 211 to reach the locked position. At least part of the diameter of the locking section 311 is equivalent to the aperture of the matching hole 211 for matching. In order to prevent the offset tray 2 from moving in the up and down directions relative to the combined tray 1 when the locking member 3 is in the said position, the diameter of a section of the locking section 311 away from the unlocking section 312 is larger than the diameter of the matching hole 211. Therefore, the diameter of the locking section 311 in the direction away from the unlocking section 312 is first smaller than the aperture of the matching hole 211 , then equal to the aperture of the matching hole 211 , and finally larger than the aperture of the matching hole 211 .

[0035] In order to realize the ability to drive the locking member 3 to move in the up and down direction, in a specific embodiment, the power assembly offset assembly device 100 further includes: a matching shaft 4 and a driving member 5, the matching shaft 4 extends in the horizontal direction and is fixedly arranged relative to the unlocking section 312; the middle part of the driving member 5 is connected to the assembly tray 1 along the horizontal axis, one end forms a handle, and the other end is provided with a strip-shaped through hole penetrating in the horizontal direction, and the matching shaft 4 is provided with the strip-shaped through hole. In this embodiment, the middle part of the driving member 5 is used as a rotation fulcrum, and one end of the driving member 5 is made into a handle, which is convenient for user operation. When the handle is turned, the other end of the driving member 5 rotates accordingly. In order to make the locking member 3 move with the other end of the driving member 5, it is first necessary to cooperate with the other end of the driving member 5. The matching shaft 4 is fixedly connected relative to the unlocking section 312. The matching shaft 4 and the unlocking section 312 can be directly connected (not shown in the figure) or relatively connected (shown in the figure). The matching shaft 4 then cooperates with the other end of the moving member, so that the locking member 3 moves. However, the movement direction of the other end of the driving member 5 is to rotate around the middle of the driving member 5, while the movement direction required by the locking pin is to move in the up and down direction. Therefore, a strip through hole is provided at the other end of the driving member 5 and passes through the horizontal direction. The other end of the driving member 5 and the matching shaft 4 are not rotationally matched, but limitedly matched. Through this structure, the locking member 3 can be prevented from rotating and can only move in the up and down direction.

[0036] In order to keep the locking member 3 fixed at the locking position and the unlocking position, and to maintain the locking state and the unlocking state, in one embodiment, the assembly tray 1 is provided with two grooves 7, which are arranged at intervals in the up-down direction and correspond to the locking position and the unlocking position respectively; the powertrain bias assembly device 100 also includes a protrusion 6, which is fixedly connected relative to the unlocking section 312 and is used to cooperate with one of the two grooves 7. When the locking member 3 moves to the locking position, the protrusion 6 cooperates with the groove 7, and when the locking member 3 moves to the unlocking position, the protrusion 6 cooperates with the other groove 7. The protruding direction of the protrusion 6 is perpendicular to the up-down direction. Although the protrusion 6 cooperates with the groove 7 to keep the locking member 3 stationary at this position, the protrusion 6 cooperates with the groove 7 to limit the movement of the locking member 3 in the up-down direction. Therefore, the protrusion 6 needs to be disengaged from the groove 7 before the locking member 3 moves in the up-down direction. The multi-pack tray 1 is provided with a through hole extending in the vertical direction, and the unlocking section 312 is fitted with a small gap in the through hole. When the locking member 3 is slightly deflected, the protrusion 6 can exit the groove 7 (with a shallow depth). After the protrusion 6 exits the groove 7, the locking member 3 can move in the vertical direction.

[0037] In the above embodiment, when the locking member 3 is in the locking position, the offset tray 2 cannot move in the horizontal direction and can be restricted in the upper and lower directions. However, when only one locking member 3 is provided, the offset tray 2 can rotate in the extension direction of the locking pin. During the lifting process, if the offset tray 2 rotates, the components may collide with each other. Therefore, further, two locking members 3 are provided and arranged at intervals, and the offset tray 2 is provided with two matching portions 21, which are arranged corresponding to the two locking members 3. The two locking members 3 are used to realize the freedom of rotation of the offset tray 2 along the axis in the upper and lower directions.

[0038] In order to facilitate the horizontal adjustment of the offset tray 2 relative to the combined tray 1, the power assembly offset combined device 100 further includes a plurality of rolling members, which are arranged on the side of the offset tray 2 facing the combined tray 1 and are used to abut against the combined tray 1. By rolling instead of sliding, the friction generated during movement is reduced, so that the position of the offset tray 2 can be easily adjusted.

[0039] In order to achieve the lifting action during the assembly process, the power assembly offset assembly device 100 further includes a lifting mechanism, which is used to drive and connect with the assembly tray 1 so that the assembly tray 1 can move in the up and down direction. The lifting mechanism includes a combination of an electric cylinder, a screw slider and a motor.

[0040] According to the powertrain offset assembly device 100, there is also an assembly method of the powertrain offset assembly device 100: the use method of the powertrain offset assembly device 100 is based on the powertrain offset assembly device 100, which is used to connect the vehicle body, the transmission shaft, the left suspension, the right suspension, and the rear suspension to the powertrain, and the assembly method includes: calculating the offset amount required for assembly; adjusting the position of the offset tray 2 according to the offset amount; installing each component on the powertrain offset assembly device 100 and assembling them.

[0041] The step of adjusting the position of the offset tray 2 according to the offset comprises: calculating the theoretical gap L1 required for assembly; measuring the actual gap L2 during assembly; calculating the offset L3 according to the theoretical gap L1 and the actual gap L2, L3=L1-L2; measuring the maximum value of the universal joint in the transmission shaft for assembly which can be offset as L4; when L3 is less than or equal to L4, determining that the powertrain offset assembly device 100 meets the offset, and adjusting the position of the offset tray 2 according to the offset; when L3 is greater than L4, determining that the powertrain offset assembly device 100 does not meet the offset, and replacing the powertrain offset assembly device 100.

[0042] The steps of installing and assembling the components of the powertrain offset assembly device 100 include: driving the offset tray 2 to lift up for assembly; driving the offset tray 2 to descend for resetting; connecting the left suspension, the right suspension, and the rear suspension to the powertrain.

[0043] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A powertrain offset assembly device for assembling a vehicle body, a transmission shaft, and a powertrain. It is characterized in that include: The combined pallet is provided with a first positioning portion and a second positioning portion, wherein the first positioning portion is used to position the transmission shaft, and the second positioning portion is used to position the vehicle body; An offset tray, which is disposed on the upper side of the combined tray and can move in a horizontal direction compared to the combined tray, the offset tray is used to carry the power assembly, and the offset tray is provided with a matching portion; A locking member is movably installed with the combined tray in the up-down direction and has a locking position and an unlocking position in the movable stroke. In the locking position, the locking member and the matching portion are locked and matched to position the offset tray in the horizontal direction. In the unlocking position, the locking member releases the lock on the offset tray to allow the offset tray to move in the horizontal direction compared to the combined tray.

2. The powertrain offset assembly device according to claim 1, It is characterized in that The matching portion includes a matching hole opened on the lower side of the offset tray, and the locking member includes a locking rod.

3. The powertrain offset assembly device as claimed in claim 2, It is characterized in that The matching hole penetrates the offset tray in the up-down direction, and the locking rod includes a locking section and an unlocking section, wherein the unlocking section is located below the locking section, wherein the size of the locking section is adapted to the size of the matching hole, and the outer diameter of the unlocking section is smaller than the outer diameter of the locking section.

4. The powertrain offset assembly device as claimed in claim 3, It is characterized in that The locking rod further comprises a connecting section connecting the locking section and the unlocking section, and an outer diameter of the connecting section is gradually reduced in a direction approaching the unlocking section.

5. The powertrain offset assembly device as claimed in claim 3, It is characterized in that The difference between the diameter of the matching hole and the diameter of the unlocking section is greater than or equal to 10 mm.

6. The powertrain offset assembly device as claimed in claim 3, It is characterized in that The powertrain offset assembly device further comprises: A matching shaft extending in a horizontal direction and fixedly arranged relative to the unlocking section; A driving member, wherein the middle portion of the driving member is rotatably connected to the combined tray along a horizontal axis, one end of the driving member forms a handle, and the other end is provided with a strip through hole penetrating along a horizontal direction, and the matching shaft passes through the strip through hole.

7. The powertrain offset assembly device as claimed in claim 6, It is characterized in that The assembly tray is provided with two grooves, which are spaced apart in the up and down directions and correspond to the locking position and the unlocking position respectively; the powertrain biased assembly device also includes a protrusion, which is fixedly connected relative to the unlocking section and is used to cooperate with one of the two grooves.

8. The powertrain offset assembly device as claimed in claim 1, It is characterized in that The locking members are provided with two and are arranged at intervals, and the offset tray is provided with two matching portions, which are arranged corresponding to the two locking members.

9. The powertrain offset assembly device as claimed in claim 1, It is characterized in that The powertrain offset assembly device further comprises a plurality of rolling elements, which are arranged on a side of the offset tray facing the assembly tray and are used for abutting against the assembly tray.

10. The powertrain offset assembly device according to claim 1, It is characterized in that The power assembly offset assembly device further comprises a lifting mechanism, and the lifting mechanism is used for drivingly connecting with the assembly tray so as to enable the assembly tray to move in the up-down direction.

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