Floating support structure

Abstract

A floating supporting structure is arranged on a support body used for bearing a suspension system and comprises a supporting block which is in contact fit with the lower surface of the middle of a lower swing arm of the suspension system; the mounting seat is arranged on the bracket body; one end of the movable arm is movably connected with the mounting seat, and the other end of the movable arm is provided with the supporting block; one end of the elastic structure is connected with the movable arm, and the other end of the elastic structure is connected with the support body; the elastic structure provides upward elastic force to support the lower swing arm through the movable arm and the supporting block, and the elastic structure provides compression deformation, so that when the lower swing arm swings downwards under the action of external force, the posture of the movable arm changes, and the height of the supporting block is changed. Therefore, the jacking force required by the jacking mechanism in the combined assembly process of the chassis and the suspension system is reduced, and meanwhile, the contact position of the suspension spring and the chassis is convenient to adjust.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile assembly, in particular to a floating support structure. Background Art

[0002] In the field of automobile manufacturing, chassis assembly is an important link in the process of automobile automated production. During chassis assembly, when the chassis and suspension system are assembled, the suspension system is supported and positioned by the support frame. When the chassis and suspension system are positioned up and down at the assembly station, the jacking mechanism lifts the support frame to make the connection between the suspension system and the chassis contact, and then assembly is carried out.

[0003] The suspension system comprises the subframe, suspension springs, upper and lower control arms, and other structures. The subframe and the upper ends of the suspension springs must be fixedly connected to the vehicle body. During chassis and suspension system assembly, the lower control arm is typically fixedly supported. The lifting mechanism compresses the suspension springs during lifting, bringing the chassis and subframe into contact before the mounting position is established. This requires the lifting mechanism to provide a significant lifting force while also ensuring that any slight deviation in the contact position between the suspension spring and chassis is prevented. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned existing production technology, the applicant provides a floating support structure, thereby reducing the lifting force required by the lifting mechanism during the assembly of the chassis and suspension system, and facilitating the adjustment of the contact position between the suspension spring and the chassis.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A floating support structure is provided on a support body for supporting a suspension system, and comprises:

[0007] A support block, the support block being in contact with a lower surface of a middle portion of a lower swing arm of the suspension system;

[0008] A mounting seat, provided on the bracket body;

[0009] a movable arm, one end of which is movably connected to the mounting seat, and the other end of which is provided with the supporting block;

[0010] an elastic structure, one end of the elastic structure being connected to the movable arm, and the other end of the elastic structure being connected to the bracket body;

[0011] Among them, the elastic structure provides an upward elastic force to support the lower swing arm through the movable arm and the support block, and the elastic structure provides a compressive deformation amount, so that when the lower swing arm swings downward under the action of external force, the posture of the movable arm changes and the height of the support block is changed.

[0012] As a further improvement of the above technical solution:

[0013] The supporting block is mounted on the upper end of the movable arm, the lower end of the movable arm is in sliding connection with the mounting seat, the sliding direction of the movable arm is vertical, and the deformation direction of the elastic structure is vertical.

[0014] The elastic structure is a gas spring, the piston rod end of the elastic structure is connected with the movable arm, and the pressure cylinder of the elastic structure is fixedly mounted on the support body.

[0015] One end of the movable arm is hinged to the mounting seat, one end of the elastic structure is hinged to the movable arm, the other end of the elastic structure is hinged to the support body, the elastic structure provides an upwardly inclined elastic force, and when the lower swing arm swings downward under the action of an external force, the movable arm swings around the mounting seat.

[0016] The support body is detachably provided with a limiting structure, the limiting structure comprises an upper limiting block and a lower limiting block, the upper limiting block corresponds to the upper surface of the movable arm and is used to limit the upper limit position of the swing of the movable arm, and the lower limiting block corresponds to the lower surface of the movable arm and is used to limit the lower limit position of the swing of the movable arm.

[0017] The elastic structure comprises a connecting cylinder and a connecting rod, one end of the connecting cylinder is hinged to the support body, an active cavity is arranged in the connecting cylinder, one end of the connecting rod is hinged to the movable arm, the other end of the connecting rod is in sliding connection with the active cavity, and a limiting plate is arranged on the connecting rod.

[0018] A helical spring is sleeved on the connecting rod, one end of the helical spring abuts against the end of the connecting cylinder, the other end of the helical spring abuts against the limiting plate, a limiting plug that cooperates with the internal connecting rod of the active cavity is arranged on the connecting cylinder, and the limiting plug is used to make the helical spring in a compressed state.

[0019] One end of the connecting rod is provided with a sliding part, the sliding part is in sliding connection with the active cavity, a limiting groove is arranged on the sliding part in the axial direction, a plug hole is arranged on the active cavity, and the limiting plug is mounted in the plug hole and the end part cooperates with the limiting groove.

[0020] An oil groove is arranged on the outer wall of the sliding part in the circumferential direction, an oil nozzle is arranged on the connecting cylinder, and when the compression amount of the compressed state is the smallest, the oil groove corresponds to the oil nozzle.

[0021] The lower surface of the movable arm is a plane, the corresponding part of the lower surface of the movable arm on the lower limiting block is arranged as a cylindrical surface, and the contact mode of the movable arm and the lower limiting block is linear contact.

[0022] The elastic structure further comprises a connecting frame detachably connected to the movable arm, wherein the connecting frame is hinged to the end of the connecting rod;

[0023] The floating support structure also includes a base plate, which is fixedly connected to the bracket body, and the mounting seat is fixedly connected to the base plate. The limiting structure includes a mounting frame, and the upper limit block and the lower limit block are both installed on the mounting frame. The mounting frame is detachably connected to the base plate via fasteners, and the support block is detachably connected to the movable arm via fasteners, and the connecting cylinder is hinged to the mounting frame.

[0024] A first connecting hole corresponding to the mounting bracket is provided on the base plate, a second connecting hole corresponding to the connecting bracket is provided on the movable arm, and a third connecting hole corresponding to the supporting block is provided on the movable arm. The first connecting hole and the second connecting hole are used to change the positions of the elastic structure and the limiting structure relative to the base plate, and the third connecting hole is used to change the position of the supporting block on the movable arm.

[0025] The beneficial effects of the utility model are as follows:

[0026] The utility model has a compact and reasonable structure and is easy to operate. By arranging a floating support structure on a bracket body that carries the suspension system, the floating support carries the lower swing arm of the suspension system, and maintaining the state of the assembled front suspension system through the elastic force of the elastic structure, the positioning of the connection part is achieved. During the assembly process of the suspension system and the chassis, the jacking structure lifts the suspension system so that the suspension spring contacts the chassis and is subjected to force. The elastic structure provides a compressive deformation to make the lower swing arm swing, thereby reducing the deformation of the suspension spring, thereby reducing the jacking force required by the jacking mechanism during the assembly process of the chassis and the suspension system, and at the same time facilitating the adjustment of the contact position between the suspension spring and the chassis.

[0027] At the same time, the utility model also has the following advantages:

[0028] (1) By setting the connection structure between the movable arm, the elastic structure and the bracket body in the main structure of the floating support structure as a hinge, a dynamically deformable triangular linkage structure is formed. The swing angle of the movable arm is changed by the deformation of the elastic structure, and the longitudinal installation space occupied by the floating support structure is reduced when the swing condition of the lower arm remains unchanged. In addition, the swing trend of the movable arm is consistent with the swing trend of the lower arm, following the arc trajectory of the support point on the lower arm, making the displacement of the support point on the support block smoother, avoiding the relative movement of the upper end of the suspension spring and the chassis during the swing of the lower arm.

[0029] (2) along the outer wall of the sliding part is provided with an oil groove, the connecting cylinder is provided with an oil nozzle, the compression amount is the smallest in the compression state, the oil groove corresponds with the oil nozzle, sufficient oil is added in the oil groove, and smooth sliding connection of the connecting rod and the movable cavity is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a floating support structure schematic view of an embodiment of the utility model.

[0031] Figure 2 It is Figure 1 the front and rear two kinds of state of main view of the chassis.

[0032] Figure 3 It is a floating support structure of an embodiment of the utility model.

[0033] Figure 4 It is a floating support structure schematic view of an embodiment of the utility model.

[0034] Figure 5 It is a structure schematic view of the floating support structure and suspension system assembly (chassis assembly before) of an embodiment of the utility model.

[0035] Figure 6 It is the front and rear two kinds of state of main view of the suspension system support frame of an embodiment of the utility model.

[0036] Figure 7 It is a structure schematic view of the elastic structure of an embodiment of the utility model.

[0037] Figure 8 It is a perspective view of the limiting structure of an embodiment of the utility model.

[0038] Figure 9 It is a structure schematic view of the floating support structure of an embodiment of the utility model.

[0039] Among them:

[0040] 1, suspension system;10, upper support;11, suspension spring;12, upper swing arm;13, subframe;14, lower swing arm;15, brake disc;

[0041] 2, support body;3, support positioning structure;

[0042] 4, floating support structure;41, mounting seat;42, movable arm;420, third connecting hole;44, supporting block;

[0043] 43. Elastic structure; 431. Connecting frame; 432. Limiting plate; 433. Coil spring; 434. Connecting cylinder; 4341. Active cavity; 4342. Oil hole; 435. Limiting plug; 436. Connecting rod; 4361. Sliding portion; 4362. Oil tank; 4363. Limiting groove; 437. Oil nozzle;

[0044] 45. Limiting structure; 451. Mounting frame; 452. Upper limit block; 453. Lower limit block;

[0045] 46. ​​Base plate; 460. First connection hole. DETAILED DESCRIPTION

[0046] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0047] Example 1:

[0048] like Figures 1-6 As shown, the floating support structure of this embodiment, the floating support structure 4 is provided on the support body 2 for supporting the suspension system 1, and the floating support structure 4 includes:

[0049] A support block 44 , the support block 44 contacts and cooperates with the lower surface of the middle portion of the lower swing arm 14 of the suspension system 1 ;

[0050] The mounting base 41 is provided on the bracket body 2;

[0051] A movable arm 42, one end of the movable arm 42 is movably connected to the mounting seat 41, and the other end of the movable arm 42 is provided with a supporting block 44;

[0052] An elastic structure 43, one end of the elastic structure 43 is connected to the movable arm 42, and the other end of the elastic structure 43 is connected to the bracket body 2;

[0053] Among them, the elastic structure 43 provides an upward elastic force to support the lower swing arm 14 through the movable arm 42 and the support block 44, and the elastic structure 43 provides a compressive deformation amount, so that when the lower swing arm 14 swings downward under the action of external force, the posture of the movable arm 42 changes and the height of the support block 44 is changed.

[0054] The suspension system 1 is a double wishbone suspension system, or a suspension system 1 having a lower arm 14. The double wishbone suspension system has a structure as shown in FIG. Figure 3 、 Figure 5As shown, including the sub-frame 13, the sub-frame 13 is flexibly connected to the hub through the lower swing arm 14, the hub is installed on the brake disc 15, the suspension spring 11 is connected with the upper swing arm 12, the lower end of the suspension spring 11 is also provided with a shock absorber, the upper end of the suspension spring 11 is provided with an upper support 10, the upper support 10 is used for connecting with the chassis. During the vehicle driving, the extension state of the suspension spring 11 is different, the swing posture of the lower swing arm 14 is different, and the buffer of the wheel when the ground is uneven is realized.

[0055] As shown in the figure, Figure 5 The bracket body 2 is also provided with a support positioning structure 3, which cooperates with the sub-frame 13 of the suspension system 1, and is used for positioning and supporting the sub-frame 13.

[0056] When the upper end of the suspension spring 11 of the suspension system 1 is in a free state, the lower swing arm 14 is in a balanced state under the support of the floating support structure 4; after the suspension spring 11 is subjected to a downward external force, the floating support structure 4 swings downward with the lower swing arm 14, providing space for the swing of the lower swing arm 14, and reducing the deformation amount of the suspension spring 11. The above free state refers to the state before the suspension spring 11 contacts the chassis during assembly, the floating support structure 4 supports the lower swing arm 14, and the posture of the lower swing arm 14 relative to the sub-frame 13 is limited by the support, thereby limiting the posture of the suspension spring 11. Since the floating support structure 4 has sufficient bearing capacity to support the lower swing arm 14, when the suspension system 1 is placed on the support frame, the movable connection structure state of the suspension system 1 is fixed, that is, the lower swing arm 14 is in a balanced state, which positions the position of the upper support 10 before assembly, facilitating the assembly of the suspension system 1 and the chassis.

[0057] The elastic structure 43 provides sufficient elastic force to support the suspension system 1. The contact surface of the block 44 on the lower surface of the lower swing arm 14 is a plane, and in order to facilitate the positioning and placement of the suspension system 1 on the bracket body 2, the contact surface of the block 44 is provided with a stop block on both sides, which limits the lower swing arm 14 from the length direction of the chassis, that is, the stop block and the contact surface of the block 44 form a groove structure, as shown in the figure. Figure 4

[0058] In addition, the bracket body 2 is also provided with a guide positioning structure cooperating with the chassis, which is used for positioning the connection structure of the suspension system 1 and the chassis during assembly.

[0059] ​The floating support structure 4 of this embodiment is arranged on the bracket body 2 that supports the suspension system 1, and the floating support supports the lower arm 14 of the suspension system 1. The elastic force of the elastic structure 43 maintains the state of the assembled front suspension system 1, and realizes the positioning of the connection part. During the assembly of the suspension system 1 and the chassis, the jacking structure lifts the suspension system 1 so that the suspension spring 11 contacts the chassis and is subjected to force. The elastic structure 43 provides a compressive deformation to make the lower arm 14 swing, reducing the deformation of the suspension spring 11, thereby reducing the jacking force required by the jacking mechanism during the assembly of the chassis and the suspension system, and at the same time facilitates the adjustment of the contact position of the suspension spring 11 with the chassis.

[0060] Example 2:

[0061] like Figures 1-3 As shown, the support block 44 is installed on the upper end of the movable arm 42, the lower end of the movable arm 42 is slidably connected to the mounting seat 41, the sliding direction of the movable arm 42 is vertical, and the deformation direction of the elastic structure 43 is vertical.

[0062] The elastic structure 43 is a gas spring. The end of the piston rod of the elastic structure 43 is connected to the movable arm 42 . The pressure cylinder of the elastic structure 43 is fixedly mounted on the bracket body 2 .

[0063] The movable arm 42 is slidably connected to the mounting base 41 via a guide rail and slider structure. When the piston rod of the elastic structure 43 is extended, it provides an upward elastic force, causing the support block 44 to support the lower swing arm 14. When the suspension system 1 is subjected to external force, the piston rod is compressed, causing the lower swing arm 14 to swing. The support block 44 changes its position in supporting the lower swing arm 14, lowering its own height as the lower swing arm 14 swings. This structure is simple and easy to install, but the longitudinal structure of the overall floating support structure 4 occupies a large space, making the overall height of the support structure of the suspension system 1 relatively high.

[0064] Example 3:

[0065] like Figures 4-6 As shown, this embodiment shows another movable connection structure between the movable arm 42 and the mounting seat 41, which is different from the second embodiment. The floating support structure 4 includes a support block 44, a mounting seat 41, a movable arm 42, and an elastic structure 43. The support block 44 contacts and cooperates with the lower surface of the middle portion of the lower arm 14 of the suspension system 1. The mounting seat 41 is provided on the support body 2. One end of the movable arm 42 is movably connected to the mounting seat 41. The other end of the movable arm 42 is provided with the support block 44. The elastic structure 43 has one end connected to the movable arm 42 and the other end connected to the support body 2.

[0066] like Figure 4As shown, one end of the movable arm 42 is hinged to the mounting base 41, one end of the elastic structure 43 is hinged to the movable arm 42, and the other end of the elastic structure 43 is hinged to the bracket body 2. The elastic structure 43 provides an upward elastic force. When the lower swing arm 14 swings downward under the action of an external force, the movable arm 42 swings around the mounting base 41.

[0067] A limiting structure 45 can be detachably installed on the bracket body 2, and the limiting structure 45 includes an upper limit block 452 and a lower limit block 453. The upper limit block 452 corresponds to the upper surface of the movable arm 42 and is used to limit the upper limit position of the swing of the movable arm 42. The lower limit block 453 corresponds to the lower surface of the movable arm 42 and is used to limit the lower limit position of the swing of the movable arm 42.

[0068] like Figure 6 As shown, the three hinged positions of the mounting base 41, the movable arm 42 and the elastic structure 43 form a triangle. Specifically, under the elastic force of the elastic structure 43 and the limiting structure 45, the movable arm 42 is in a horizontal or nearly horizontal state, which can be specifically set according to needs, such as Figure 6 Middle Figure (a). Because the rotation axis of the mounting base 41 is higher than the hinge axis of the hinged position of the elastic structure 43 and the bracket body 2, the triangle is an inverted triangle. The elastic force provided by the elastic structure 43 is on the lower side of the triangle, and the direction of the elastic force is obliquely upward. The swing range angle α of the movable arm 42 is adjusted by setting the upper and lower swing limits of the movable arm 42, as shown in FIG. Figure 6 Middle figure (b).

[0069] By setting the connection structure between the movable arm 42, the elastic structure 43 and the bracket body 2 in the main structure of the floating support structure 4 as a hinge, a dynamically deformable triangular linkage structure is formed, and the swing angle of the movable arm 42 is changed by the deformation of the elastic structure 43, so that the longitudinal installation space occupied by the floating support structure 4 is reduced when the swing condition of the lower swing arm 14 remains unchanged. In addition, the swing trend of the movable arm 42 is consistent with the swing trend of the lower swing arm 14, and conforms to the arc trajectory of the fulcrum on the lower swing arm 14, so that the displacement of the fulcrum on the support block 44 is smoother, thereby avoiding the relative movement of the upper end of the suspension spring 11 and the chassis during the swing of the lower swing arm 14.

[0070] like Figure 6 As shown, the swing range angle of the movable arm 42 is α, which is smaller than the maximum angle of the lower control arm 14 that can freely swing downward from the equilibrium state. As a result, after the subframe 13 of the suspension system 1 contacts the chassis during assembly, the lower control arm 14 is in a stable state, thereby preventing the force state of the upper end of the suspension spring 11 from being changed due to the movement or elastic vibration of the movable arm 42, thereby ensuring that the contact position of the suspension spring 11 with the chassis remains unchanged.

[0071] like Figure 6 、 Figure 7As shown, the elastic structure 43 includes a connecting cylinder 434 and a connecting rod 436. One end of the connecting cylinder 434 is hinged to the bracket body 2. A movable cavity 4341 is provided in the connecting cylinder 434. One end of the connecting rod 436 is hinged to the movable arm 42. The other end of the connecting rod 436 is slidably connected to the movable cavity 4341. A limit plate 432 is provided on the connecting rod 436.

[0072] A coil spring 433 is sleeved on the connecting rod 436, one end of the coil spring 433 abuts against the end of the connecting cylinder 434, and the other end of the coil spring 433 abuts against the limit plate 432. The connecting cylinder 434 is provided with a limit plug-in 435 that cooperates with the connecting rod 436 inside the movable chamber 4341. The limit plug-in 435 is used to put the coil spring 433 in a compressed state.

[0073] The assembly process of the floating support structure 4 is as follows:

[0074] First, install the mounting base 41 on the bracket body 2, and hinge the movable arm 42 provided with the support block 44 to the mounting base 41;

[0075] Then, one end of the elastic structure 43 is hinged to the bracket body 2, and the other end of the elastic structure 43 is hinged to the movable arm 42;

[0076] Finally, the movable arm 42 is placed between the upper limit block 452 and the lower limit block 453 of the limiting structure 45. When the limiting structure 45 is connected by bolts, the movable arm 42 is adjusted downward to further compress the coil spring 433 in the elastic structure 43.

[0077] The elastic structure 43 of this embodiment adopts a structure in which two relatively sliding parts cooperate with a coil spring 433. Under the action of external force, the positions of the two hinge points change, and the length of one side of the hinged triangle is changed to change the shape of the triangle, thereby realizing the swing of the movable arm 42. A limiting plug-in 435 is provided so that the elastic structure 43 itself has a preset spring compression amount, which facilitates the installation of the elastic structure 43. At the same time, combined with the limiting effect of the upper limit block 452, the coil spring 433 is further compressed to ensure the support effect and longitudinal positioning accuracy of the movable arm 42.

[0078] like Figure 7 As shown, a sliding portion 4361 is provided at one end of the connecting rod 436, and the sliding portion 4361 is slidably connected to the movable cavity 4341. A limiting groove 4363 is axially provided on the sliding portion 4361, and a socket is provided on the movable cavity 4341. The limiting plug-in 435 is installed in the socket and the end portion cooperates with the limiting groove 4363.

[0079] The upper limit block 452 and the lower limit block 453 are made of non-metallic materials, such as rubber, nylon and other non-metallic materials with high elasticity and high toughness. The limit plug 435 is a bolt structure, and the limit plug 435 is threadedly connected to the jack. The length of the limit slot 4363 is related to the deformable amount of the coil spring 433 in the elastic structure 43 after assembly. The design stroke of the limit plug 435 in the limit slot 4363 is L. Figure 7 As shown, the stroke of the limit plug 435 in the limit groove 4363 during the assembly process is less than the design stroke L, and the limit plug 435 and the two ends of the limit groove 4363 are not in contact during the deformation of the elastic structure 43 during the assembly process. The elastic structure 43 has good buffering performance during the overall elastic deformation process. Combined with the buffering and limiting effects of the upper limit block 452 and the lower limit block 453, the noise and flexibility of the swinging process of the movable arm 42 of the floating support structure 4 during the assembly process are better.

[0080] like Figure 7 As shown, an oil groove 4362 is provided along the circumference of the outer wall of the sliding portion 4361, and an oil nozzle 437 is provided on the connecting cylinder 434. When the compression amount is minimum in the compressed state, the oil groove 4362 corresponds to the oil nozzle 437. An oil hole 4342 is provided on the cylinder wall of the connecting cylinder 434, and the oil nozzle 437 is mounted on the oil hole 4342. The oil hole 4342 connects the oil nozzle 437 with the movable chamber 4341.

[0081] When the compression amount of the coil spring 433 in the compressed state is the minimum, Figure 7 As shown, the limiting plug-in 435 contacts one end of the limiting groove 4363. At this time, the oil nozzle 437 corresponds to the oil groove 4362, which is convenient for adding sufficient oil into the oil groove 4362 to ensure smooth sliding connection between the connecting rod 436 and the movable cavity 4341.

[0082] like Figure 8 、 Figure 6 As shown, the lower surface of the movable arm 42 is a plane, and the portion of the lower limit block 453 corresponding to the lower surface of the movable arm 42 is set as a cylindrical surface. The contact mode between the movable arm 42 and the lower limit block 453 is line contact, which facilitates the adaptation of the lower limit block 453 and the movable arm 42.

[0083] Example 4:

[0084] In order to further simplify the installation method and connection structure of the floating support structure 4, based on the third embodiment, as shown in FIG. Figure 9 As shown, the elastic structure 43 of this embodiment further includes a connecting frame 431 detachably connected to the movable arm 42 , and the connecting frame 431 is hinged to the end of the connecting rod 436 ;

[0085] The floating support structure 4 further comprises a base plate 46 fixedly connected with the support body 2, the mounting seat 41 is fixedly connected with the base plate 46, the limiting structure 45 comprises a mounting frame 451, the upper limiting block 452 and the lower limiting block 453 are both mounted on the mounting frame 451, the mounting frame 451 is detachably connected with the base plate 46 through fasteners, the supporting block 44 is detachably connected with the movable arm 42 through fasteners, and the connecting cylinder 434 is hinged with the mounting frame 451.

[0086] As shown in Figure 9 , the base plate 46 is provided with a first connecting hole position 460 corresponding to the mounting frame 451, the movable arm 42 is provided with a second connecting hole position corresponding to the connecting frame 431, and the movable arm 42 is provided with a third connecting hole position 420 corresponding to the supporting block 44, the first connecting hole position 460 and the second connecting hole position are used to change the position of the elastic structure 43 and the limiting structure 45 relative to the base plate 46, and the third connecting hole position 420 is used to change the position of the supporting block 44 on the movable arm 42.

[0087] Specifically, under the limiting action of the upper limiting block 452, the initial state of the movable arm 42 is a horizontal state, which can also be other specific angles; the third connecting hole position 420 is used to detachably install the supporting block 44, the third connecting hole position 420 is a hole group or an oblong hole corresponding to the fastener, which is used to adjust the position of the supporting block 44 on the movable arm 42; the first connecting hole position 460 is used to fasten the mounting frame 451 with the base plate 46, the second connecting hole position is used to fasten the connecting frame 431 with the movable arm 42, and the first connecting hole position 460 and the second connecting hole position are both a hole group or an oblong hole corresponding to the fastener, which is convenient for changing the mounting position of the mounting frame 451 and the connecting frame 431 relative to the base plate 46, and the contact surface of the lower limiting block 453 and the movable arm 42 is a cylindrical surface, which can directly adjust the swing angle and the supporting position of the movable arm 42, so that the design of the floating support structure 4 is modularized, and can be applied to different specifications of the suspension system 1. The first connecting hole position 460, the second connecting hole position and the third connecting hole position 420 preferably adopt a hole group structure, as shown in Figure 9 .

[0088] The assembly process of the floating support structure 4 of the embodiment is as follows:

[0089] Firstly, the mounting seat 41 is mounted on the base plate 46, and the movable arm 42 is hinged with the mounting seat 41;

[0090] Then, one end of the elastic structure 43 is hinged with the mounting frame 451, and the other end of the elastic structure 43 is provided with the connecting frame 431;

[0091] Then, the installation positions of the elastic structure 43 and the limiting structure 45 are selected according to the swing angle of the lower swing arm 14, and the connecting frame 431 is connected to the corresponding position of the second connecting hole on the movable arm 42, and the movable arm 42 is placed between the upper limit block 452 and the lower limit block 453;

[0092] Finally, the mounting bracket 451 is connected to the corresponding position of the first connecting hole 460 on the base plate 46 by means of bolts. During the tightening of the bolts, the coil spring 433 in the elastic structure 43 is further compressed under the limit of the upper limit block 452. After the mounting bracket 451 is installed, the movable arm 42 is in the initial state.

[0093] The position of the support block 44 on the movable arm 42 is selected according to the support position of the lower swing arm 14, the corresponding position of the third connection hole 420 is selected, and then bolt connection is adopted.

[0094] Finally, the base plate 46 is mounted on the bracket body 2 .

[0095] The floating support structure 4 of this embodiment includes a base plate 46, and a first connecting hole 460 and a second connecting hole for adjusting the position of the elastic structure 43 are provided on the base plate 46 and the movable arm 42. In combination with the contact surface between the lower limit block 453 and the movable arm 42 being a cylindrical surface, the swing angle of the movable arm 42 can be directly adjusted. At the same time, a third connecting hole 420 for adjusting the position of the support block 44 is provided on the movable arm 42, and the support position can be directly adjusted, so that the design of the floating support structure 4 is modular, which can be applicable to suspension systems 1 of different specifications. The floating support structure 4 can also be installed on the bracket body 2 after adjustment, thereby simplifying the design and assembly procedures.

[0096] The chassis assembly process using the floating support structure of this embodiment is as follows:

[0097] The chassis arrives at the assembly station, and the bracket body 2 equipped with the suspension system 1 is transported to the assembly station by the conveyor line. The subframe 13 of the suspension system 1 is supported by the floating support structure 4, and the suspension spring 11 corresponds to the connection position of the vehicle body.

[0098] The lifting mechanism of the assembly station lifts the bracket body 2, causing the suspension system 1 to move upward, and the suspension spring 11 to contact the chassis;

[0099] After the suspension spring 11 contacts the chassis, the lifting mechanism continues to work to fit the subframe 13 of the suspension system 1 to the chassis. During the process from the suspension spring 11 contacting the vehicle body to the subframe 13 fitting to the chassis, the suspension spring 11 is subjected to a downward external force, and the floating support structure 4 swings downward with the lower control arm 14, providing space for the swing of the lower control arm 14 and reducing the deformation of the suspension spring 11.

[0100] The guiding positioning structure on the support body 2 cooperates with the chassis to position the rigid connecting structure of the two.

[0101] By arranging the floating support structure 4 on the support body 2 of the bearing suspension system 1, the state of the suspension system 1 before assembly is maintained by elastic force, the positioning of the connecting position is realized, and in the assembly process of the suspension system 1 and the chassis, the floating support structure 4 swings the lower swing arm 14 after the jacking structure jacks up the suspension system 1 to make the suspension spring 11 contact and bear force with the chassis, the deformation amount of the suspension spring 11 is reduced, thereby the jacking force required by the jacking mechanism in the assembly process is reduced, and the adjustment of the contact position of the suspension spring 11 and the chassis is facilitated.

[0102] The above description is an explanation of the utility model, not a limitation of the utility model, the range defined by the utility model is referred to the claims, and any form of modification can be made within the protection range of the utility model.

Claims

1. A floating support structure, characterized in that: The floating support structure (4) is arranged on a support body (2) for supporting the suspension system (1), and the floating support structure (4) comprises: A support block (44), the support block (44) being in contact with a lower surface of a middle portion of a lower swing arm (14) of the suspension system (1); A mounting seat (41) is provided on the bracket body (2); a movable arm (42), one end of the movable arm (42) being movably connected to the mounting seat (41), and the other end of the movable arm (42) being provided with the supporting block (44); an elastic structure (43), one end of the elastic structure (43) being connected to the movable arm (42), and the other end of the elastic structure (43) being connected to the bracket body (2); The elastic structure (43) provides an upward elastic force to support the lower swing arm (14) through the movable arm (42) and the support block (44), and the elastic structure (43) provides a compressive deformation amount, so that when the lower swing arm (14) swings downward under the action of an external force, the posture of the movable arm (42) changes and the height of the support block (44) is changed.

2. The floating support structure according to claim 1, wherein: The support block (44) is mounted on the upper end of the movable arm (42), the lower end of the movable arm (42) is slidably connected to the mounting seat (41), the sliding direction of the movable arm (42) is vertical, and the deformation direction of the elastic structure (43) is vertical.

3. The floating support structure according to claim 2, wherein: The elastic structure (43) is a gas spring, the piston rod end of the elastic structure (43) is connected to the movable arm (42), and the pressure cylinder of the elastic structure (43) is fixedly mounted on the bracket body (2).

4. The floating support structure according to claim 1, wherein: One end of the movable arm (42) is hinged to the mounting seat (41), one end of the elastic structure (43) is hinged to the movable arm (42), and the other end of the elastic structure (43) is hinged to the bracket body (2). The elastic structure (43) provides an upward elastic force, and when the lower swing arm (14) swings downward under the action of an external force, the movable arm (42) swings around the mounting seat (41); A limiting structure (45) is detachably mounted on the bracket body (2), and the limiting structure (45) comprises an upper limit block (452) and a lower limit block (453). The upper limit block (452) corresponds to the upper surface of the movable arm (42) and is used to limit the upper limit position of the swing of the movable arm (42). The lower limit block (453) corresponds to the lower surface of the movable arm (42) and is used to limit the lower limit position of the swing of the movable arm (42).

5. The floating support structure according to claim 4, wherein: The elastic structure (43) includes a connecting cylinder (434) and a connecting rod (436), one end of the connecting cylinder (434) is hinged to the bracket body (2), a movable cavity (4341) is provided in the connecting cylinder (434), one end of the connecting rod (436) is hinged to the movable arm (42), the other end of the connecting rod (436) is slidably connected to the movable cavity (4341), and a limiting plate (432) is provided on the connecting rod (436); A coil spring (433) is sleeved on the connecting rod (436), one end of the coil spring (433) abuts against the end of the connecting cylinder (434), and the other end of the coil spring (433) abuts against the limiting plate (432). A limiting plug-in (435) is provided on the connecting cylinder (434) to cooperate with the connecting rod (436) inside the movable chamber (4341), and the limiting plug-in (435) is used to put the coil spring (433) in a compressed state.

6. The floating support structure according to claim 5, wherein: A sliding portion (4361) is provided at one end of the connecting rod (436), and the sliding portion (4361) is slidably connected to the movable cavity (4341). A limiting groove (4363) is axially provided on the sliding portion (4361), and a socket is provided on the movable cavity (4341). The limiting plug-in (435) is installed in the socket and its end portion cooperates with the limiting groove (4363).

7. The floating support structure according to claim 6, wherein: An oil groove (4362) is provided along the circumference of the outer wall of the sliding portion (4361), and an oil nozzle (437) is provided on the connecting cylinder (434). When the compression amount in the compression state is minimum, the oil groove (4362) corresponds to the oil nozzle (437).

8. The floating support structure according to claim 4, wherein: The lower surface of the movable arm (42) is a plane, the portion of the lower limit block (453) corresponding to the lower surface of the movable arm (42) is set as a cylindrical surface, and the contact mode between the movable arm (42) and the lower limit block (453) is line contact.

9. The floating support structure according to claim 5, wherein: The elastic structure (43) further includes a connecting frame (431) detachably connected to the movable arm (42), and the connecting frame (431) is hinged to the end of the connecting rod (436); The floating support structure (4) further includes a base plate (46), the base plate (46) is fixedly connected to the bracket body (2), the mounting seat (41) is fixedly connected to the base plate (46), the limiting structure (45) includes a mounting frame (451), the upper limit block (452) and the lower limit block (453) are both mounted on the mounting frame (451), the mounting frame (451) and the base plate (46) are detachably connected via fasteners, the support block (44) is detachably connected to the movable arm (42) via fasteners, and the connecting cylinder (434) is hinged to the mounting frame (451).

10. The floating support structure according to claim 9, wherein: The base plate (46) is provided with a first connection hole position (460) corresponding to the mounting frame (451), the movable arm (42) is provided with a second connection hole position corresponding to the connecting frame (431), and the movable arm (42) is provided with a third connection hole position (420) corresponding to the supporting block (44). The first connection hole position (460) and the second connection hole position are used to change the position of the elastic structure (43) and the limiting structure (45) relative to the base plate (46), and the third connection hole position (420) is used to change the position of the supporting block (44) on the movable arm (42).

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