CN215509899U

CN215509899U - Automatic system of screwing up of front suspension

Info

Publication number: CN215509899U
Application number: CN202121995736.9U
Authority: CN
Inventors: 吴耿雄; 钟和辉; 杨辉平
Original assignee: GAC Honda Automobile Co Ltd
Current assignee: GAC Honda Automobile Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-14
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses an automatic front suspension tightening system, which comprises: the conveying device is provided with a first screwing station and a second screwing station; a platen; the jacking positioning mechanism is arranged on the first tightening station and the second tightening station and used for jacking the bedplate to be separated from the conveying device; the pressing mechanism is arranged on the first screwing station and the second screwing station and is used for pressing the front suspension on the bedplate downwards after being jacked by the jacking positioning mechanism; the lower arm lifting mechanism is arranged at the first screwing station and used for lifting a front suspension lower arm of the front suspension after the pressing mechanism presses the front suspension; the automatic tightening equipment is arranged on the first tightening station and the second tightening station and comprises a robot and an electric tightening shaft. The utility model not only meets the beat requirement of the front suspension frame for continuous conveying, but also meets the positioning requirement of different bolt fastening positions, thereby greatly improving the production efficiency.

Description

Automatic system of screwing up of front suspension

Technical Field

The utility model is used in the field of automobile manufacturing, and particularly relates to an automatic front suspension tightening system.

Background

The front suspension bolt tightening of car generally adopts artifical manual completion, in order to promote bolt tightening efficiency, reduces the human cost, has also appeared the scheme that adopts the robot to realize front suspension bolt fastening among the prior art, but current scheme can't satisfy beat requirement and the location requirement to the front suspension of continuous transport, has restricted production efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve at least one technical problem in the prior art and provides an automatic front suspension tightening system.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a front suspension automatic tightening system comprising:

the automatic front suspension frame screwing system is provided with a first screwing station and a second screwing station along the conveying direction of the conveying device;

a platen for transporting the front suspension along the transport device;

the jacking positioning mechanism is arranged on the first tightening station and the second tightening station and used for jacking the bedplate to be separated from the conveying device;

the pressing mechanism is arranged on the first tightening station and the second tightening station and used for pressing the front suspension on the bedplate downwards after the jacking positioning mechanism jacks up;

the lower arm lifting mechanism is arranged at the first screwing station and used for lifting a front suspension lower arm of a front suspension after the pressing mechanism presses the front suspension;

the automatic tightening device is arranged on the first tightening station and the second tightening station and comprises a robot and an electric tightening shaft, the electric tightening shaft is connected to the robot through a support, and an output shaft extending out to the side is arranged at the end of the electric tightening shaft.

In some embodiments, the automatic tightening device further comprises an elastic sleeve assembly, the elastic sleeve assembly comprises a first sleeve, a second sleeve, a first spring and a sleeve head, one end of the first sleeve is provided with a first shaft hole in fit connection with the output shaft, the other end of the first sleeve is provided with a first square shaft, one end of the second sleeve is provided with a second shaft hole in floating sleeve connection with the first square shaft, the other end of the second sleeve is provided with a second square shaft connected with the sleeve head, and the first spring is supported between the first sleeve and the second sleeve.

In some embodiments, the second sleeve is provided with a waist-shaped hole in a hole wall of the second shaft hole, the waist-shaped hole extends along an axial direction of the second shaft hole, the first square shaft is provided with a first pin matched with the waist-shaped hole, the second shaft hole is a through hole penetrating through the second sleeve, the second square shaft is mounted in the second shaft hole and locked by a second pin, and the elastic sleeve assembly further includes a sheath which is sleeved outside the second sleeve and limits the first pin and the second pin to the second sleeve.

In some embodiments, the sleeve head is provided with a third shaft hole in fit connection with the second square shaft, a pin hole is formed in the hole wall of the third shaft hole of the sleeve head, a third pin for locking the second square shaft is arranged in the pin hole, an annular groove is formed in the outer surface of the sleeve head, the annular groove intersects with the pin hole, and an elastic ring for limiting the third pin is arranged in the annular groove.

In some embodiments, the bracket extends along a length direction of the power tightening shaft, the power tightening shaft is locked to a side of the bracket by a pressing block, and a protection clip for wrapping the power tightening shaft is arranged on the bracket.

In some embodiments, the bottom of the platen is provided with a positioning pin hole, and the jacking positioning mechanism comprises a positioning pin, a supporting block and a first lifting driving part, wherein the first lifting driving part is used for driving the positioning pin and the supporting block to lift, matching the positioning pin with the positioning pin hole through the positioning pin when the first lifting driving part is lifted, and jacking the platen to be separated from the conveying device through the supporting block.

In some embodiments, the jacking-positioning mechanism further comprises:

the mounting device comprises a mounting base, guide rail mounting bases are arranged at two ends of the mounting base, lifting guide rails are arranged on the guide rail mounting bases, and a gap is reserved between the lifting guide rails at two sides above the mounting base;

the lifting arm is arranged in the interval, end supporting plates are arranged at two ends of the lifting arm, a sliding block matched with the lifting guide rail is arranged on each end supporting plate, the positioning pins and the supporting blocks are arranged on the end supporting plates, and the positioning pins are higher than the supporting blocks;

the first lifting driving part is installed on the installation base, and the output end of the first lifting driving part is connected with the lifting arm.

In some embodiments, the lower arm lifting mechanism comprises a second lifting driving part, a lifting connector and a nylon top block, wherein the nylon top block is connected with the output end of the second lifting driving part through the lifting connector.

In some embodiments, the pressing mechanism comprises a third lifting driving part, a pressing arm and a nylon pressing block, the third lifting driving part is located on the side of the conveying direction of the bedplate, one end of the pressing arm is connected with the third lifting driving part, and the other end of the pressing arm extends transversely to the upper part of the bedplate and is connected with the nylon pressing block.

In some embodiments, conveyor is in first tightening station and second tightening station all are equipped with stop mechanism and backstop mechanism, stop mechanism can go up and down in order to block or release the platen, backstop mechanism includes mounting panel, baffle and second spring, the baffle passes through the mounting panel is installed conveyor is last, the baffle rotationally establishes around perpendicular to direction of delivery's pivotal axis on the mounting panel, just keeping away from of baffle the tip of pivotal axis with it has the second spring to support between the mounting panel to lean on, the baffle is in keep away from under the effect of second spring the tip of pivotal axis is to the perk of platform truck direction to prevent platform truck reverse motion.

One of the above technical solutions has at least one of the following advantages or beneficial effects: during work, the front suspension is continuously conveyed along the conveying device along with the bedplate, when the front suspension is conveyed to a first tightening station, the jacking positioning mechanism of the first tightening station acts to jack the bedplate to be separated from the conveying device, after the jacking positioning mechanism finishes jacking operation, the pressing mechanism of the first tightening station presses the front suspension on the bedplate downwards, the lower arm lifting mechanism of the first tightening station presses the front suspension lower arm of the front suspension after the pressing mechanism presses the front suspension lower arm of the front suspension, the front suspension lower arm of the front suspension is kept at a specific height, and then the robot of the first tightening station can carry the electric tightening shaft to finish automatic tightening of the front suspension lower arm bolt; the pressing mechanism, the lower arm lifting mechanism and the jacking positioning mechanism of the first tightening station reset, the front suspension frame is conveyed along the conveying device along with the bedplate, when the front suspension frame is conveyed to the second tightening station, the jacking positioning mechanism of the second tightening station acts to jack the bedplate to be separated from the conveying device, after the jacking positioning mechanism finishes jacking operation, the pressing mechanism of the second tightening station downwards presses the front suspension frame on the bedplate, and then the robot of the second tightening station can carry an electric tightening shaft to finish automatic fastening of the bolt of the direction machine of the front suspension frame. And the pressing mechanism and the jacking positioning mechanism of the second tightening station reset, and the front suspension frame is continuously conveyed to the next station along the conveying device along with the bedplate. This technical scheme is through when screwing up according to positioning means and automatic equipment of screwing up, screws up the station with the work of screwing up of front suspension and splits to first station and the station of screwing up of second, has both satisfied the beat requirement to the front suspension of continuous transport, has satisfied the location requirement of different bolt-up positions again, has promoted production efficiency greatly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic top view of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the conveyor apparatus of one embodiment shown in FIG. 1;

FIG. 3 is a schematic view of a platen configuration of the embodiment shown in FIG. 1;

FIG. 4 is a front view of the jacking positioning mechanism of one embodiment shown in FIG. 1;

FIG. 5 is a top view of the jacking-positioning mechanism structure of one embodiment shown in FIG. 1;

FIG. 6 is a schematic view of the lower arm lift mechanism of the embodiment shown in FIG. 1;

FIG. 7 is a schematic diagram of the hold-down mechanism of the embodiment shown in FIG. 1;

FIG. 8 is a schematic view of the automatic tightening apparatus of the embodiment shown in FIG. 1;

FIG. 9 is a structural isometric view of the elastomeric sleeve assembly of one embodiment shown in FIG. 1;

FIG. 10 is a cross-sectional structural view of one embodiment elastomeric sleeve assembly shown in FIG. 1;

fig. 11 is a structural sectional view of the retaining mechanism 14 of one embodiment shown in fig. 1.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the present invention, if directions (up, down, left, right, front, and rear) are described, it is only for convenience of describing the technical solution of the present invention, and it is not intended or implied that the technical features referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, it is not to be construed as limiting the present invention.

In the utility model, the meaning of "a plurality" is one or more, the meaning of "a plurality" is more than two, and the terms of "more than", "less than", "more than" and the like are understood to exclude the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise specifically limited, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above-mentioned words in the present invention can be reasonably determined by those skilled in the art in combination with the detailed contents of the technical solutions.

With reference to fig. 1, an embodiment of the present invention provides an automatic front suspension tightening system for achieving automatic tightening of front suspension bolts. The automatic front suspension tightening system comprises a conveying device 1, a bedplate 2, a jacking positioning mechanism 3, a pressing mechanism 4, a lower arm lifting mechanism 5 and automatic tightening equipment 6.

Specifically, referring to fig. 2, the conveying device 1 may adopt a double-speed chain, and the conveying device 1 is used for continuously conveying the front suspension 7 along the conveying direction so that the front suspension 7 passes through each station in the conveying process, for example, in the embodiment shown in fig. 1, the automatic front suspension tightening system is provided with a first tightening station 11 and a second tightening station 12 along the conveying direction of the conveying device 1, wherein the first tightening station 11 is used for automatically tightening bolts of the lower arm of the front suspension, and the second tightening station 12 is used for automatically tightening bolts of a steering machine of the front suspension.

Referring to fig. 3, the bedplate 2 is used for conveying the front suspension 7 along the conveying device 1, a supporting and positioning assembly 21 for placing the front suspension 7 is arranged at the top of the bedplate 2, and the supporting and positioning assembly 21 comprises a supporting block and a positioning bolt so as to position a workpiece of the front suspension during conveying and bolt tightening, so that the positioning of the front suspension 7 is realized.

The bedplate 2 can be made of aluminum alloy materials, has better strength, prevents durable deformation and has longer service life.

According to needs, the front edge and the rear edge of the bedplate 2 are provided with anti-collision blocks 22, four corners of the bedplate 2 are provided with idler wheels 23, so that jamming of the bedplate 2 in the conveying process is avoided, the bottom of the bedplate 2 is provided with an anti-abrasion plate 24, the anti-abrasion plate is in contact with a chain of the conveying device 1, and the service life of the bedplate 2 is prolonged.

Referring to fig. 2, the jacking positioning mechanism 3 is arranged at the first tightening station 11 and the second tightening station 12, and the jacking positioning mechanism 3 is used for jacking the bedplate 2 to be separated from the conveying device 1; jacking positioning mechanism 3 can make platen 2 break away from conveyor 1's double speed chain on the one hand to eliminated the vibrations of double speed chain belt for platen 2, made platen 2 can keep in quiescent condition, and on the other hand, platen 2 can make the location of front suspension keep the position displacement, is favorable to subsequent bolt automatic fastening work.

Referring to fig. 7, the pressing mechanism 4 is disposed at the first screwing station 11 and the second screwing station 12, and the pressing mechanism 4 is configured to press the front suspension on the platen 2 downward after being jacked by the jacking positioning mechanism 3, so as to avoid that the front suspension 7 floats upward when the lower arm lifting mechanism 5 lifts, and the positioning accuracy is affected.

Referring to fig. 6, a lower arm lifting mechanism 5 is provided at the first tightening station 11, and the lower arm lifting mechanism 5 is used to lift the front suspension lower arm of the front suspension after the pressing mechanism 4 presses.

Referring to fig. 1 and 8, the automatic tightening apparatus 6 is provided at the first tightening station 11 and the second tightening station 12, the automatic tightening apparatus 6 includes a robot 61 and a power tightening shaft 62, and the robot 61 may employ a six-axis robot 61 to ensure sufficient flexibility and freedom. The power tightening shaft 62 is connected to the robot 61 through a bracket 63, and the power tightening shaft 62 ensures that the power tightening shaft 62 can perform bolt tightening actions at different positions along with the robot 61 by virtue of the flexibility of the robot 61.

Referring to fig. 8, the power tightening shaft 62 has an elongated rod shape, and an output shaft protruding laterally is provided at an end of the power tightening shaft 62, through which the power tightening shaft 62 outputs torque to the outside. The power tightening shaft 62 is connected to the bracket 63, and further connected to the robot 61 through the bracket 63. The electric tightening shaft 62 is connected with the robot 61 through the bracket 63, so that the exchange precision of the electric tightening shaft 62 is effectively protected.

The embodiment of the utility model adopts the electric tightening shaft 62 in a long and thin rod shape as a power part for tightening the bolt, has lighter structure and smaller occupied space, reduces the space requirement when the robot 61 executes the tightening action, reduces the load of the robot 61 and prolongs the service life of the robot 61.

In operation, the front suspension is continuously conveyed along the conveying device 1 along with the platen 2, when the front suspension is conveyed to the first tightening station 11, the jacking positioning mechanism 3 of the first tightening station 11 acts to jack up the platen 2 to be separated from the conveying device 1, after the jacking positioning mechanism 3 finishes jacking operation, the pressing mechanism 4 of the first tightening station 11 presses the front suspension on the platen 2 downwards, the lower arm lifting mechanism 5 of the first tightening station 11 lifts the front suspension lower arm of the front suspension after the pressing mechanism 4 presses the front suspension lower arm, and the front suspension lower arm of the front suspension is kept at a specific height, and then the robot 61 of the first tightening station 11 can carry the electric tightening shaft 62 to finish automatic tightening of the front suspension lower arm bolt; the pressing mechanism 4, the lower arm lifting mechanism 5 and the jacking positioning mechanism 3 of the first tightening station 11 reset, the front suspension frame is conveyed along the conveying device 1 along with the bedplate 2 continuously, when the front suspension frame is conveyed to the second tightening station 12, the jacking positioning mechanism 3 of the second tightening station 12 acts to jack the bedplate 2 to be separated from the conveying device 1, after the jacking positioning mechanism 3 finishes jacking operation, the pressing mechanism 4 of the second tightening station 12 presses the front suspension frame on the bedplate 2 downwards, and then the robot 61 of the second tightening station 12 can carry the electric tightening shaft 62 to finish automatic fastening of the bolt of the direction machine of the front suspension frame. The pressing mechanism 4 and the jacking positioning mechanism 3 of the second tightening station 12 are reset, and the front suspension frame is continuously conveyed to the next station along the conveying device 1 along with the bedplate 2. This technical scheme is through when screwing up according to positioning means and automatic equipment 6 of screwing up, screws up the work breakdown of front suspension to first station 11 and the station 12 is screwed up to the second, has both satisfied the beat requirement to the front suspension of continuous transport, has satisfied the location requirement of different bolt-up positions again, has promoted production efficiency greatly.

In some embodiments, referring to fig. 8, 9 and 10, the automatic tightening device 6 further includes an elastic sleeve assembly for torque transmission of the power tightening shaft 62 to the bolt, the elastic sleeve assembly includes a first sleeve 64, a second sleeve 65, a first spring 66 and a sleeve head 67, one end of the first sleeve 64 is provided with a first shaft hole 68 in fit connection with the output shaft, and the first shaft hole 68 is connected with the output shaft of the power tightening shaft 62 to realize torque transmission. The other end of the first sleeve 64 is provided with a first square shaft 69, and the cross section of the first square shaft 69 is rectangular or other polygons. One end of the second sleeve 65 is provided with a second shaft hole 610 which is in floating sleeve connection with the first square shaft 69, the other end of the second sleeve 65 is provided with a second square shaft 611 which is connected with the sleeve head 67, and the first spring 66 is supported between the first sleeve 64 and the second sleeve 65. The first sleeve 64 and the second sleeve 65 form an elastic structure through the floating sleeve and the first spring 66, when the robot 61 carries the electric tightening shaft 62 and the elastic sleeve assembly to tighten a specific bolt, bolt pre-tightening errors and transmission tightening torque when the robot 61 performs a tightening action can be effectively absorbed, and damage of the electric wrench or the robot 61 due to feed amount errors with the bolt is avoided. This embodiment adopts the structural style of first sleeve 64, second sleeve 65, sleeve head 67 three sections, and sleeve head 67 can adopt the standard component, under the unsteady functional prerequisite of elasticity for sleeve head 67 can be changed as required or degree of wear, reduces structural cost.

In some embodiments, the sleeve head 67 is an inner 12-degree sleeve head 67, and in this embodiment, the sleeve head 67 is more quickly stabilized and has a higher one-pass rate.

In some embodiments, referring to fig. 10, in order to control the floating stroke between the first sleeve 64 and the second sleeve 65 and avoid the first sleeve 64 and the second sleeve 65 from separating, the second sleeve 65 is provided with a kidney-shaped hole 612 on the wall of the second shaft hole 610, the kidney-shaped hole 612 extends along the axial direction of the second shaft hole 610, and the first shaft 69 is provided with a first pin 613 matched with the kidney-shaped hole 612.

Further, referring to fig. 10, the second shaft hole 610 is a through hole penetrating through the second sleeve 65, the second square shaft 611 is mounted in the second shaft hole 610 and locked by the second pin 614, and the first square shaft 69 and the second square shaft 611 are connected by the second sleeve 65 to realize torque transmission.

In order to avoid the first pin 613 and the second pin 614 from escaping from the second sleeve 65, the elastic sleeve assembly further comprises a sheath 615, see fig. 10, the sheath 615 being fitted outside the second sleeve 65 and confining the first pin 613 and the second pin 614 to the second sleeve 65.

In some embodiments, referring to fig. 10, the sleeve head 67 is provided with a third shaft hole for matching and connecting with the second square shaft 611, and the sleeve head 67 is provided with a pin hole on the wall of the third shaft hole, and a third pin 616 for locking the second square shaft 611 is arranged in the pin hole, and realizes torque transmission. To prevent the third pin 616 from coming out, the outer surface of the sleeve head 67 is provided with a circumferential groove intersecting the pin hole, in which a resilient ring 617 is provided which defines the third pin 616. The elastic ring 617 can be disassembled on the sleeve head 67 more conveniently, so that the sleeve head 67 can be replaced quickly as required.

Referring to fig. 8, the bracket 63 extends along the length direction of the power tightening shaft 62, the power tightening shaft 62 is locked to the side of the bracket 63 by a pressing block, and the power tightening shaft 62 is protected and supported by the bracket 63 on the side. In order to reduce the weight of the bracket 63, the bracket 63 may be made of a space aluminum alloy.

Further, in order to prevent the power tightening shaft 62 from being damaged by impact during operation, a protective clip for covering the power tightening shaft 62 is provided on the bracket 63.

For further guarantee, the bracket 63 is provided with a proximity switch 618 at the end far away from the robot 61, so as to avoid collision after the vehicle type is selected by mistake.

In some embodiments, referring to fig. 3, 4 and 5, the bottom of the platen 2 is provided with a positioning pin hole 25, the jacking positioning mechanism 3 is located below the platen 2, the jacking positioning mechanism 3 comprises a positioning pin 31, a supporting block 32 and a first lifting driving part 33, the first lifting driving part 33 is used for driving the positioning pin 31 and the supporting block 32 to lift and fall, and is matched with the positioning pin hole 25 through the positioning pin 31 when lifting, and jacks up the platen 2 through the supporting block 32 to be separated from the conveying device 1.

In order to ensure the positioning effect, the jacking positioning mechanism 3 includes at least two positioning pins 31, for example, in the embodiment shown in fig. 5, the two positioning pins 31 are located at diagonal positions of the jacking positioning mechanism 3.

In some embodiments, referring to fig. 4 and 5, the jacking positioning mechanism 3 further includes a mounting base 34 and a lifting arm 35, wherein the mounting base 34 is disposed along a direction perpendicular to the conveying direction of the bedplate 2, two ends of the mounting base 34 are provided with rail mounting bases 36, the rail mounting bases 36 are provided with lifting rails 37, and a space is left between the lifting rails 37 on two sides above the mounting base 34; the lifting arm 35 is disposed in the space, end supporting plates 38 are disposed at both ends of the lifting arm 35, the end supporting plates 38 extend upward, the end supporting plates 38 are provided with sliders 39 fitted to the lifting guide rails 37, the positioning pins 31 and the supporting blocks 32 are mounted to the end supporting plates 38, and the positioning pins 31 are higher than the supporting blocks 32 to ensure that the positioning pins 31 can be inserted into the positioning pin holes 25 before the supporting blocks 32 lift the bedplate 2.

The first elevation driving member 33 is mounted on the mounting base 34, and an output end of the first elevation driving member 33 is connected to the elevation arm 35. In this embodiment, the first lifting driving part 33 drives the lifting arm 35, the lifting arm 35 drives the positioning pins 31 and the supporting blocks 32 at two ends to lift synchronously, and meanwhile, the precision of the lifting process is ensured by means of the matching of the lifting guide rail 37 and the sliding block 39. Wherein, a plurality of locating pins 31 and supporting blocks 32 of jacking and positioning platen 2 are driven by first lift drive part 33 in unison, and the synchronism, stability are better.

Wherein, first lift drive part 33 can adopt the cylinder, sets up the middle holding type in three-position five-way valve on the gas circuit of cylinder simultaneously, guarantees that jacking positioning mechanism 3 possesses and prevents descending the function, and it also can guarantee the position unchangeable at compressed air cuts off the gas suddenly, and robot 61 can continue to accomplish automatic the screwing up.

In some embodiments, referring to fig. 6, the lower arm lifting mechanisms 5 are located at the first tightening station 11 and symmetrically arranged at two sides of the conveying direction of the trolley, and each lower arm lifting mechanism 5 comprises a second lifting driving part 51, a lifting connecting part 52 and a nylon top block 53, and the nylon top block 53 is connected with the output end of the second lifting driving part 51 through the lifting connecting part 52. The second lifting driving part 51 drives the lifting connecting piece 52 and the nylon jacking block 53 to be positioned at the lowest position before the bedplate 2 enters the first screwing station 11, and after the bedplate 2 enters the first screwing station 11, the second lifting driving part 51 drives the lifting connecting piece 52 and the nylon jacking block 53 to jack up the front suspension lower arm upwards and keep the position constant in the process of screwing the bolt by the robot 61. After the robot 61 finishes screwing the bolts, the lower arm of the front suspension is fastened at a specific angle and conveyed to the next station along with the bedplate 2. The second lifting driving part 51 drives the lifting connecting piece 52 and the nylon top block 53 to reset, and waits for the next working cycle.

In some embodiments, referring to fig. 7, the pressing mechanism 4 includes a third lifting driving member 41, a pressing arm 42 and a nylon pressing block 43, the third lifting driving member 41 is located at the side of the conveying direction of the platen 2, one end of the pressing arm 42 is connected to the third lifting driving member 41, and the other end extends transversely above the platen 2 and is connected to the nylon pressing block 43. When the bedplate 2 transports the front suspension to the first tightening station 11 or the second tightening station 12, after the jacking positioning mechanism 3 lifts the bedplate 2 from bottom to top, the pressing mechanism 4 can press the front suspension from top to bottom so as to ensure that the bedplate 2 and the front suspension are in a completely stable and fixed state, and a positioning foundation is made in advance for subsequent bolt fastening operation.

In the above embodiment, the second elevation driving part 51 and the third elevation driving part 41 may adopt an air cylinder or an electric push rod, etc., as required.

In some embodiments, referring to fig. 2, the conveying device 1 is provided with a blocking mechanism 13 and a stopping mechanism 14 at each of the first tightening station 11 and the second tightening station 12, and the blocking mechanism 13 is used for blocking the bedplate 2 when the bedplate 2 reaches the first tightening station 11 or the second tightening station 12, so that the jacking positioning mechanism 3 can lift the bedplate. The blocking mechanism 13 can be driven by a cylinder, and the blocking mechanism 13 can be lifted to block or release the bedplate 2.

Referring to fig. 11, the retaining mechanism 14 includes a mounting plate 141, a baffle 142 and a second spring 143, the baffle 142 is mounted on the conveying device 1 through the mounting plate 141, the baffle 142 is rotatably disposed on the mounting plate 141 around a pivot shaft perpendicular to the conveying direction, and the second spring 143 is abutted between an end of the baffle 142 far from the pivot shaft and the mounting plate 141, and the end of the baffle 142 far from the pivot shaft tilts in the direction of the trolley under the action of the second spring 143 to prevent the trolley from moving in the reverse direction. When the bedplate 2 enters the first tightening station 11 or the second tightening station 12, the bedplate 2 is matched with the edge of the baffle 142, the end part of the baffle 142 far away from the pivot shaft is pressed down under the action of the gravity of the bedplate 2, and after the bedplate 2 completely enters the first tightening station 11 or the second tightening station 12, the baffle 142 is tilted up under the action of the second spring 143, so that the reverse movement of the trolley is blocked.

In the description herein, references to the description of the term "example," "an embodiment," or "some embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the utility model, and such equivalent modifications or substitutions are included in the scope of the claims of the present application.

Claims

1. An automatic front suspension tightening system, comprising:

a platen for transporting the front suspension along the transport device;

2. The automatic front suspension tightening system according to claim 1, wherein the automatic tightening device further comprises an elastic sleeve assembly, the elastic sleeve assembly comprises a first sleeve, a second sleeve, a first spring and a sleeve head, one end of the first sleeve is provided with a first shaft hole in fit connection with the output shaft, the other end of the first sleeve is provided with a first square shaft, one end of the second sleeve is provided with a second shaft hole in floating socket connection with the first square shaft, the other end of the second sleeve is provided with a second square shaft connected with the sleeve head, and the first spring is supported between the first sleeve and the second sleeve.

3. The automatic front suspension tightening system according to claim 2, wherein the second sleeve is provided with a kidney-shaped hole in a wall of the second shaft hole, the kidney-shaped hole extends along an axial direction of the second shaft hole, the first square shaft is provided with a first pin which is matched with the kidney-shaped hole, the second shaft hole is a through hole which penetrates through the second sleeve, the second square shaft is mounted in the second shaft hole and locked by a second pin, and the elastic sleeve assembly further comprises a sheath which is sleeved outside the second sleeve and limits the first pin and the second pin to the second sleeve.

4. The automatic front suspension tightening system according to claim 2, wherein the sleeve head is provided with a third shaft hole in fit connection with the second square shaft, the sleeve head is provided with a pin hole in a wall of the third shaft hole, a third pin for locking the second square shaft is arranged in the pin hole, an annular groove is formed in the outer surface of the sleeve head, the annular groove intersects with the pin hole, and an elastic ring for limiting the third pin is arranged in the annular groove.

5. The front suspension automatic tightening system according to claim 1, wherein the bracket extends along a length direction of the power tightening shaft, the power tightening shaft is locked to a side of the bracket by a pressing block, and a protective clip that covers the power tightening shaft is provided on the bracket.

6. The automatic front suspension tightening system according to claim 1, wherein the bottom of the platen is provided with a positioning pin hole, and the jacking positioning mechanism comprises a positioning pin, a support block and a first lifting driving part, and the first lifting driving part is used for driving the positioning pin and the support block to lift, and is matched with the positioning pin hole through the positioning pin when the first lifting driving part is lifted, and is used for jacking the platen to be separated from the conveying device through the support block.

7. The automatic front suspension tightening system of claim 6, wherein the jacking positioning mechanism further comprises:

8. The automatic front suspension tightening system of claim 1, wherein the lower arm lift mechanism includes a secondary lift drive member, a lift link, and a nylon top block, the nylon top block being connected to an output of the secondary lift drive member via the lift link.

9. The automatic front suspension tightening system according to claim 1, wherein the hold-down mechanism includes a third elevation driving member, a pressing arm, and a nylon press block, the third elevation driving member is located on a side of the conveying direction of the platen, one end of the pressing arm is connected to the third elevation driving member, and the other end of the pressing arm extends transversely above the platen and is connected to the nylon press block.

10. The automatic front suspension tightening system according to claim 1, wherein the conveying device is provided with a blocking mechanism and a backstop mechanism at the first tightening station and the second tightening station, the blocking mechanism can be lifted to block or release the platen, the backstop mechanism comprises a mounting plate, a baffle and a second spring, the baffle is mounted on the conveying device through the mounting plate, the baffle is rotatably arranged on the mounting plate around a pivot shaft perpendicular to the conveying direction, a second spring is abutted between the end of the baffle far away from the pivot shaft and the mounting plate, and the end of the baffle far away from the pivot shaft under the action of the second spring is tilted towards the direction of the trolley to prevent the trolley from moving reversely.