CN220073856U - Vehicle chassis tightening equipment and vehicle production line - Google Patents

Abstract

The utility model discloses vehicle chassis tightening equipment and a vehicle production line, wherein the vehicle chassis tightening equipment comprises a carrier vehicle, a synchronizing mechanism and a tightening mechanism, the carrier vehicle comprises a mounting frame and a plurality of moving wheels, and the plurality of moving wheels are mounted at the bottom of the mounting frame; the synchronous mechanism is used for clamping or releasing the lifting appliance; the tightening mechanism comprises a mechanical arm, a tightening gun, a telescopic arm, a rotating block and a mounting assembly, wherein one end of the mechanical arm is mounted on the mounting frame, the other end of the mechanical arm is connected with the mounting assembly, the telescopic arm comprises a first end and a second end which are oppositely arranged, the first end is rotatably mounted at one end of the rotating block through a second rotating shaft which is horizontally arranged, the second end is connected with the mounting assembly, and the mechanical arm is used for driving the mounting assembly to drive the tightening gun to move so that the tightening gun can tighten bolts of a vehicle chassis. The utility model can reduce the reaction force applied by the tightening gun to the mechanical arm in the process of tightening the bolts of the chassis of the vehicle.

Description

Vehicle chassis tightening equipment and vehicle production line

Technical Field

The utility model relates to the technical field of automobile chassis processing, in particular to vehicle chassis tightening equipment and a vehicle production line.

Background

At present, in the existing vehicle production and processing, after front suspension and rear suspension of a vehicle are carried, a chassis large-torque bolt needs to be tightened, and the following two modes are commonly used in the tightening industry of the bolt: the process is carried out manually, in order to facilitate manual operation, a vehicle is usually required to be suspended at a designated position, and then a tightening tool is operated by a worker to carry out tightening operation on the bolt, so that a great amount of labor is consumed in the process, and the vehicle is required to stay at one position for a long time, cannot enter the next station for processing at a later time, and moves to the next station after the tightening operation is finished, so that the production efficiency of the vehicle is reduced; the other mode is for addding the carrier loader, carrier loader and vehicle keep synchronous movement, because the staff is inconvenient the operation on the carrier loader of removal, consequently carry out automatic tightening to the chassis bolt through adding to establish automatic tightening mechanism on the carrier loader, this mode has not only saved the manpower, still reduced the vehicle and moved the time spent to next station after accomplishing chassis bolt tightening, and then improved production efficiency, current automatic tightening mechanism usually comprises the arm with tightening the rifle, install in the arm through will tightening the rifle for the arm drives to tighten the rifle and removes in order to realize chassis bolt's tightening. However, the tightening gun can generate a larger reaction force in the tightening process, the existing mechanical arm can offset the reaction force generated by the tightening gun through the holding force of the existing mechanical arm, but the reaction force of the tightening gun in the tightening process can accelerate the aging of the mechanical arm in the long-time use process of the mechanical arm, the mechanical arm can be damaged, or the tightening gun can be thrown away in the tightening process, so that the life safety of workers can be threatened.

In view of this, there is a need to provide a new vehicle chassis tightening device and vehicle production line that solves or at least alleviates the above-mentioned technical drawbacks.

Disclosure of Invention

The utility model mainly aims to provide vehicle chassis tightening equipment and a vehicle production line, and aims to solve the technical problem that the reaction force of a tightening gun on a mechanical arm is large in the process of driving the tightening gun to carry out tightening operation by the existing mechanical arm.

In order to achieve the above object, the present utility model provides a vehicle chassis tightening apparatus for lifting by a lifting appliance, the vehicle chassis tightening apparatus comprising:

the carrier vehicle comprises a mounting frame and a plurality of moving wheels, and the moving wheels are arranged at the bottom of the mounting frame;

the synchronous mechanism comprises a jacking driving piece and a clamping assembly connected with the extending shaft of the jacking driving piece, the jacking driving piece is arranged on the mounting frame, and the jacking driving piece is used for driving the clamping assembly to lift so as to enable the clamping assembly to clamp or release the lifting appliance;

the tightening mechanism comprises a mechanical arm, a tightening gun, a telescopic arm, a rotating block and a mounting assembly, one end of the tightening gun is connected with a tightening head, the tightening gun vertically penetrates through the mounting assembly, the tightening head is located above the mounting assembly, one end of the mechanical arm is mounted on the mounting frame, the other end of the mechanical arm is connected with the mounting assembly, the telescopic arm comprises a first end and a second end which are oppositely arranged, one end of the rotating block is rotatably mounted on the mounting frame through a first rotating shaft which is vertically arranged, the first end is rotatably mounted on the other end of the rotating block through a second rotating shaft which is horizontally arranged, the second end is connected with the mounting assembly, and the mechanical arm is used for driving the mounting assembly to drive the tightening gun to move so that the tightening gun is used for tightening bolts of a vehicle chassis. In an embodiment, the telescopic arm includes a first arm segment, a second arm segment and a third arm segment, the first arm segment and the second arm segment are hollow arms, the second arm segment is telescopically sleeved in the first arm segment, the third arm segment is telescopically sleeved in the second arm segment, one end of the first arm segment away from the second arm segment is the first end, and one end of the third arm segment away from the second arm segment is the second end.

In an embodiment, the mounting bracket top is provided with the fixed station, the fixed station top is provided with the fixed column of vertical extension, the outer wall cover of fixed column is equipped with the fixed block, the one end of rotating the piece through vertical setting first pivot rotationally install in the fixed block.

In an embodiment, the installation component includes first mount pad and the second mount pad that sets up along vertical interval, screw up the rifle and wear to locate in proper order along vertical first mount pad with the second mount pad, one side of first mount pad is connected with the connecting block, the second end with the connecting block is connected, the arm is connected the second mount pad.

In an embodiment, the first mount pad includes along upper junction plate, lower connecting plate and connect in upper junction plate with two curb plates between the lower connecting plate, upper junction plate with lower connecting plate sets up along vertical interval, two the curb plate sets up along horizontal interval, upper junction plate with be provided with first mounting panel between the lower connecting plate, two are connected respectively to first mounting panel the curb plate, upper junction plate with the through-hole has all been seted up to the lower connecting plate, first screw hole has been seted up to first mounting panel, screw up the rifle and pass the through-hole with first screw hole threaded connection, the connecting block is installed outside one of them the curb plate.

In an embodiment, the second end is connected with a third rotating shaft which is horizontally arranged, and the connecting block is provided with a through hole which is in running fit with the third rotating shaft.

In an embodiment, the second mounting seat comprises a second mounting plate and a side wall plate, a second threaded hole is formed in the second mounting plate, the tightening gun is in threaded connection with the second threaded hole, and the side wall plate is connected with the second mounting plate and the mechanical arm.

In an embodiment, the number of the tightening mechanisms is a plurality, and the tightening mechanisms are arranged above the mounting frame at intervals in the transverse direction.

In an embodiment, the carrier vehicle further comprises a driving assembly, the driving assembly comprises a traveling driving piece and traveling wheels in transmission connection with the traveling driving piece, the traveling driving piece is installed on the installation frame, and the traveling driving piece is used for driving the traveling wheels to rotate so that the traveling wheels drive the carrier vehicle to move.

In addition, the utility model also provides a vehicle production line which comprises the in-place detection mechanism and the vehicle chassis tightening equipment, wherein the vehicle production line is provided with a synchronous station, and the synchronous station is provided with the in-place detection mechanism for detecting the carrier vehicle.

According to the technical scheme, the lifting appliance lifting vehicle moves to the upper part of the synchronous mechanism, the jacking driving piece drives the fixed table to ascend, after the fixed table ascends to the height that the clamping assembly can clamp the lifting appliance, the clamping driving piece drives the second clamping piece to move towards the first clamping piece, so that the first clamping piece and the second clamping piece complete clamping of the lifting appliance, the lifting appliance moves again, and the clamping of the clamping assembly to the lifting appliance and the synchronous movement of the mounting rack and the lifting appliance is realized through the plurality of rollers at the bottom of the mounting rack; after the installation frame and the lifting appliance are synchronous, the mechanical arm drives the tightening gun to tighten the bolts of the vehicle chassis, when the tightening gun is used for tightening the bolts of the vehicle chassis, the reaction force generated in the tightening process of the tightening gun is transmitted to the installation component, and the mechanical arm and the telescopic arm are connected with the installation component, so that the mechanical arm can be matched with the telescopic arm to offset the reaction force generated by the tightening gun, and the aging speed of the mechanical arm is slowed down, and the mechanical arm is prevented from being damaged.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described below, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained without the inventive effort by a person skilled in the art, in a structure which is shown in accordance with these drawings.

FIG. 1 is a schematic perspective view of a chassis tightening apparatus for a vehicle according to an embodiment of the present utility model;

FIG. 2 is a schematic bottom view of the vehicle chassis tightening apparatus of FIG. 1;

FIG. 3 is a schematic view of a plurality of tightening mechanisms according to an embodiment of the present utility model mounted on a fixed table;

FIG. 4 is a schematic structural view of a tightening mechanism according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing the structure of a tightening gun and a mounting assembly according to an embodiment of the present utility model

Fig. 6 is a schematic structural diagram of a driving assembly according to an embodiment of the utility model.

Reference numerals illustrate:

the achievement of the object, functional features and advantages of the present utility model will be further described with reference to the drawings in connection with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" can include at least one such feature, either explicitly or implicitly.

Moreover, the technical solutions of the embodiments of the present utility model can be combined with each other, but it is necessary to be based on the fact that those skilled in the art can realize the technical solutions, and when the technical solutions are contradictory or cannot be realized, the technical solutions should be considered that the combination of the technical solutions does not exist, and the combination is not within the scope of protection required by the present utility model.

The present utility model provides a vehicle chassis tightening device 1, as shown in figures 1 to 6,

the vehicle chassis tightening device 1 comprises a carrier vehicle 11, a synchronizing mechanism 12 and a tightening mechanism 13, wherein the carrier vehicle 11 comprises a mounting frame 111 and a plurality of moving wheels 112, and the plurality of moving wheels 112 are arranged at the bottom of the mounting frame 111; the synchronous mechanism 12 comprises a jacking driving piece 121 and a clamping assembly 122 connected with an extending shaft of the jacking driving piece 121, the jacking driving piece 121 is arranged on the mounting frame 111, and the jacking driving piece 121 is used for driving the clamping assembly 122 to lift so as to enable the clamping assembly 122 to clamp or release the lifting appliance; the tightening mechanism 13 comprises a mechanical arm 131, a tightening gun 132, a telescopic arm 133, a rotating block 134 and a mounting assembly 135, wherein one end of the tightening gun 132 is connected with a tightening head 1321, the tightening gun 132 vertically penetrates through the mounting assembly 135, the tightening head 1321 is located above the mounting assembly 135, one end of the mechanical arm 131 is mounted on the mounting frame 111, the other end of the mechanical arm 131 is connected with the mounting assembly 135, the telescopic arm 133 comprises a first end 1334 and a second end 1335 which are oppositely arranged, one end of the rotating block 134 is rotatably mounted on the mounting frame 111 through a first rotating shaft 136 which is vertically arranged, the first end 1334 is rotatably mounted on the other end of the rotating block 134 through a second rotating shaft 137 which is horizontally arranged, the second end 1335 is connected with the mounting assembly 135, and the mechanical arm 131 is used for driving the mounting assembly 135 to drive the tightening gun 132 to move so that the tightening gun 132 can tighten bolts of a vehicle chassis.

The lifting appliance lifts the vehicle and moves the vehicle to the position above the synchronizing mechanism 12, the lifting driving piece 121 drives the clamping assembly 122 to lift, so that the clamping assembly 122 is clamped with the lifting appliance, the lifting appliance moves again, the lifting appliance which moves again drives the carrier vehicle 11 to move synchronously with the lifting appliance through the synchronizing mechanism 12, and the tightening mechanism 13 tightens bolts of a chassis of the vehicle in the process that the synchronizing mechanism 12 drives the carrier vehicle 11 to move synchronously with the lifting appliance; specifically, the tightening mechanism 13 includes a mechanical arm 131, a tightening gun 132, a telescopic arm 133, a rotating block 134 and a mounting assembly 135, one end of the mechanical arm 131 is mounted on the mounting frame 111, the other end of the mechanical arm 131 is connected with the mounting assembly 135, the mechanical arm 131 in this embodiment can adopt a multiaxial mechanical arm 131 in the prior art, so that the mechanical arm 131 drives the mounting assembly 135 to move, the tightening gun 132 vertically penetrates through the mounting assembly 135, a tightening head 1321 of the tightening gun 132 is located above the mounting assembly 135, the tightening head 1321 can rotate relative to a gun body of the tightening gun 132, the mechanical arm 131 drives the tightening gun 132 to move to the lower portion of the vehicle chassis through the mounting assembly 135, so that bolts of the vehicle chassis are tightened through the tightening gun 132, and due to the fact that the tightening gun 132 can generate larger reaction force in the tightening process, the reaction force of the tightening gun 132 in the tightening process can accelerate ageing of the mechanical arm 131 in the long-time use process. In order to reduce the influence of the reaction force generated by the tightening gun 132 on the mechanical arm 131, in this embodiment, a telescopic arm 133 and a rotating block 134 are provided, one end of the rotating block 134 is rotatably mounted on the mounting frame 111 through a first rotating shaft 136 arranged vertically, so that the rotating block 134 can rotate vertically relative to the first rotating shaft 136, the vertical direction is the up-down direction in fig. 3 and 4, the telescopic arm 133 includes a first end 1334 and a second end 1335 arranged oppositely, the first end 1334 is connected with the rotating block 134 through a second rotating shaft 137 arranged horizontally, and therefore the telescopic arm 133 can swing upwards or downwards relative to the rotating block 134, and the second end 1335 is connected with the mounting assembly 135, wherein the second end 1335 of the telescopic arm 133 can extend or retract relative to the first end 1334.

Specifically, when the mechanical arm 131 drives the tightening gun 132 to move through the mounting assembly 135, the second end 1335 can extend out relative to the first end 1334 when the mechanical arm 131 drives the mounting assembly 135 to move away from the first end 1334 due to the connection of the mounting assembly 135 to the second end 1335; the second end 1335 can be retracted relative to the first end 1334 while the mechanical arm 131 moves the mounting assembly 135 in a direction approaching the first end 1334; when the mechanical arm 131 drives the mounting assembly 135 to move upwards or downwards, the telescopic arm 133 can rotate relative to the second rotating shaft 137 which is horizontally arranged; when the mechanical arm 131 drives the mounting assembly 135 to move leftwards or rightwards, the telescopic arm 133 can rotate relative to the first rotating shaft 136 vertically arranged; when the tightening gun 132 is tightening the bolt of the vehicle chassis, the reaction force generated by the tightening gun 132 in the tightening process is transferred to the mounting assembly 135, and the mechanical arm 131 and the telescopic arm 133 are connected with the mounting assembly 135, so that the mechanical arm 131 can be matched with the telescopic arm 133 to offset the reaction force generated by the tightening gun 132, thereby reducing the reaction force applied by the tightening gun 132 to the mechanical arm 131 in the tightening process, slowing down the aging speed of the mechanical arm 131 and preventing the mechanical arm 131 from being damaged. It should be noted that the telescopic arm 133 in this embodiment may be made of a carbon fiber composite material, so that the telescopic arm 133 has advantages of high strength, low weight, and the like.

Further, the telescopic arm 133 includes a first arm segment 1331, a second arm segment 1332 and a third arm segment 1333, the first arm segment 1331 and the second arm segment 1332 are hollow arms, the second arm segment 1332 is telescopically sleeved in the first arm segment 1331, the third arm segment 1333 is telescopically sleeved in the second arm segment 1332, one end, away from the second arm segment 1332, of the first arm segment 1331 is a first end 1334, and one end, away from the second arm segment 1332, of the third arm segment 1333 is a second end 1335. The second arm section 1332 is telescopically mounted in the first arm section 1331, the second arm section 1332 can extend or retract into the first arm section 1331, so that the mechanical arm 131 can move away from the first end 1334, the third arm section 1333 is telescopically mounted in the second arm section 1332, and the third arm section 1333 can extend or retract into the second arm section 1332, so that the moving distance of the mechanical arm 131 in the moving process of the mechanical arm in the direction away from the first end 1334 is further increased.

In an embodiment, a fixing table 1111 is disposed above the mounting frame 111, a fixing column 1112 extending vertically is disposed above the fixing table 1111, a fixing block 1113 is sleeved on an outer wall of the fixing column 1112, and one end of the rotating block 134 is rotatably mounted on the fixing block 1113 through a first rotating shaft 136 disposed vertically. Fixed column 1112 is fixed in fixed station 1111, fixed station 1111 can play the effect of supporting fixed column 1112, fixed block 1113 cover is located the outer wall of fixed column 1112, fixed block 1113 and rotating block 134 are worn to establish respectively to first pivot 136, so that rotating block 134 can rotate relative to fixed block 1113, wherein, fixed block 1113 adopts bolted connection's mode to fasten in fixed column 1112, when the high time of first end 1334 of flexible arm 133 needs to be adjusted to the operating personnel, can change the high of fixed block 1113 relative to fixed column 1112 in order to realize the regulation of first end 1334 height.

In an embodiment, the mounting assembly 135 includes a first mounting seat 1351 and a second mounting seat 1352 arranged at intervals along a vertical direction, the tightening gun 132 is sequentially arranged on the first mounting seat 1351 and the second mounting seat 1352 along the vertical direction in a penetrating manner, one side of the first mounting seat 1351 is connected with a connecting block 1359, the second end 1335 is connected with the connecting block 1359, and the mechanical arm 131 is connected with the second mounting seat 1352. The first mount pad 1351 and the second mount pad 1352 set up along vertical interval, first mount pad 1351 is connected to the second end 1335 of flexible arm 133, second mount pad 1352 is connected to arm 131, the body of a gun 132 is all fixed to first mount pad 1351 and second mount pad 1352, when the tightening head 1321 of tightening gun 132 is increasing the in-process of vehicle chassis bolt, the body of a gun 132 will react the effort and transmit respectively to first mount pad 1351 and second mount pad 1352, flexible arm 133 and arm 131 are connected with first mount pad 1351 and second mount pad 1352 respectively correspondingly, in order to offset the effort of tightening gun 132 produced.

Further, the first mounting seat 1351 comprises an upper connecting plate 1353, a lower connecting plate 1354 and two side plates 1355 connected between the upper connecting plate 1353 and the lower connecting plate 1354, the upper connecting plate 1353 and the lower connecting plate 1354 are arranged at vertical intervals, the two side plates 1355 are arranged at horizontal intervals, a first mounting plate 1356 is arranged between the upper connecting plate 1353 and the lower connecting plate 1354, the first mounting plate 1356 is respectively connected with the two side plates 1355, through holes are formed in the upper connecting plate 1353 and the lower connecting plate 1354, first threaded holes are formed in the first mounting plate 1356, the tightening gun 132 penetrates through the through holes and is in threaded connection with the first threaded holes, the connecting block 1359 is arranged outside one of the side plates 1355, the first mounting plate 1356 is arranged between the upper connecting plate 1353 and the lower connecting plate 1354 and is connected with the two side plates 1355, so that the connection strength of the first mounting seat 1351 is increased, the connecting block 1359 is arranged outside one of the side plates 1355, and the installation of the connecting block 1359 is facilitated.

In an embodiment, the second end 1335 is connected with a third rotating shaft 138 which is horizontally arranged, the connecting block 1359 is provided with a through hole which is in running fit with the third rotating shaft 138, in this embodiment, the connecting block 1359 and the second end 1335 are in running connection by arranging the third rotating shaft 138, so that the first mounting seat 1351 can rotate relative to the second end 1335, the inclination of the tightening gun 132 is realized, and the tightening of the tightening gun 132 on an inclined bolt on a chassis of a vehicle is realized.

In an embodiment, the second mounting base 1352 includes a second mounting plate 1357 and a side wall 1358, the second mounting plate 1357 is provided with a second threaded hole, the tightening gun 132 is in threaded connection with the second threaded hole, and the side wall 1358 connects the second mounting plate 1357 and the mechanical arm 131. Side wall 1358 is threaded around second mounting plate 1357 to secure side wall 1358 to second mounting plate 1357.

In one embodiment, the number of the tightening mechanisms 13 is plural, and the plurality of tightening mechanisms 13 are horizontally spaced above the mounting frame 111. In this embodiment, by providing a plurality of tightening mechanisms 13, the tightening efficiency of the vehicle chassis bolts can be increased, and rapid tightening of the vehicle chassis bolts can be achieved.

As shown in fig. 6, the carrier 11 further includes a driving assembly 114, where the driving assembly 114 includes a traveling driving member 1141 and a traveling wheel 1142 in transmission connection with the traveling driving member 1141, the traveling driving member 1141 is mounted on the mounting frame 111, and the traveling driving member 1141 is used to drive the traveling wheel 1142 to rotate, so that the traveling wheel 1142 drives the carrier 11 to move. Through setting up drive assembly 114 for after the chassis bolt tightening operation to a car is accomplished to vehicle chassis tightening equipment 1, accessible walking driving piece 1141 drives walking wheel 1142 and rotates, thereby drives carrier loader 11 and removes to synchronous station, waits that the hoist carries next car to synchronous station, not only makes carrier loader 11 can realize removing with the help of hoist with the help of not having by means of synchro mechanism 12, still compares and through the manual work promotion carrier loader 11 reset, has saved the manpower.

In addition, the utility model also provides a vehicle production line which comprises the in-place detection mechanism and the vehicle chassis tightening equipment 1, wherein the vehicle production line is provided with a synchronous station, and the synchronous station is provided with the in-place detection mechanism for detecting the carrier vehicle 11. Because the vehicle production line adopts all the technical schemes of all the embodiments, the vehicle production line has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.

The foregoing is only the preferred embodiments of the present utility model, and not the limitation of the scope of the present utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A vehicle chassis tightening apparatus for lifting by a lifting appliance, comprising:

the carrier vehicle comprises a mounting frame and a plurality of moving wheels, and the moving wheels are arranged at the bottom of the mounting frame;

the synchronous mechanism comprises a jacking driving piece and a clamping assembly connected with the extending shaft of the jacking driving piece, the jacking driving piece is arranged on the mounting frame, and the jacking driving piece is used for driving the clamping assembly to lift so as to enable the clamping assembly to clamp or release the lifting appliance;

the tightening mechanism comprises a mechanical arm, a tightening gun, a telescopic arm, a rotating block and a mounting assembly, one end of the tightening gun is connected with a tightening head, the tightening gun vertically penetrates through the mounting assembly, the tightening head is located above the mounting assembly, one end of the mechanical arm is mounted on the mounting frame, the other end of the mechanical arm is connected with the mounting assembly, one end of the rotating block is rotatably mounted on the mounting frame through a first rotating shaft which is vertically arranged, the telescopic arm comprises a first end and a second end which are oppositely arranged, the first end is rotatably mounted on the other end of the rotating block through a second rotating shaft which is horizontally arranged, the second end is connected with the mounting assembly, and the mechanical arm is used for driving the mounting assembly to drive the tightening gun to move so that the tightening gun is used for tightening bolts of a vehicle chassis.

2. The vehicle chassis tightening device of claim 1, wherein the telescoping arm includes a first arm segment, a second arm segment, and a third arm segment, the first arm segment and the second arm segment are hollow arms, the second arm segment is telescopically sleeved in the first arm segment, the third arm segment is telescopically sleeved in the second arm segment, an end of the first arm segment away from the second arm segment is the first end, and an end of the third arm segment away from the second arm segment is the second end.

3. The vehicle chassis tightening device according to claim 1, wherein a fixing table is arranged above the mounting frame, a fixing column extending vertically is arranged above the fixing table, a fixing block is sleeved on the outer wall of the fixing column, and one end of the rotating block is rotatably mounted on the fixing block through a first rotating shaft arranged vertically.

4. The vehicle chassis tightening device of claim 1, wherein the mounting assembly comprises a first mounting seat and a second mounting seat arranged at intervals along a vertical direction, the tightening gun penetrates through the first mounting seat and the second mounting seat in sequence along the vertical direction, one side of the first mounting seat is connected with a connecting block, the second end is connected with the connecting block, and the mechanical arm is connected with the second mounting seat.

5. The vehicle chassis tightening device according to claim 4, wherein the first mount pad includes two side plates along an upper connecting plate, a lower connecting plate, and a connection between the upper connecting plate and the lower connecting plate, the upper connecting plate and the lower connecting plate are arranged along a vertical interval, the two side plates are arranged along a horizontal interval, a first mount plate is provided between the upper connecting plate and the lower connecting plate, the first mount plate is respectively connected with the two side plates, through holes are respectively provided in the upper connecting plate and the lower connecting plate, a first threaded hole is provided in the first mount plate, and the tightening gun passes through the through holes and is in threaded connection with the first threaded hole, and the connection block is mounted outside one of the side plates.

6. The vehicle chassis tightening device of claim 5, wherein the second end is connected with a third rotating shaft that is horizontally disposed, and the connecting block is provided with a via hole that is in running fit with the third rotating shaft.

7. The vehicle chassis tightening apparatus of claim 4, wherein the second mount includes a second mounting plate and a side wall plate, the second mounting plate is provided with a second threaded hole, the tightening gun is in threaded connection with the second threaded hole, and the side wall plate connects the second mounting plate and the mechanical arm.

8. The vehicle chassis tightening device according to any one of claims 1 to 7, wherein the number of the tightening mechanisms is plural, and a plurality of the tightening mechanisms are horizontally arranged above the mount at intervals.

9. The vehicle chassis tightening device according to any one of claims 1 to 7, wherein the carrier vehicle further comprises a driving assembly, the driving assembly comprises a traveling driving member and a traveling wheel in transmission connection with the traveling driving member, the traveling driving member is mounted on the mounting frame, and the traveling driving member is used for driving the traveling wheel to rotate so that the traveling wheel drives the carrier vehicle to move.

10. A vehicle production line, characterized in that it comprises an in-place detection mechanism and a vehicle chassis tightening device according to any one of claims 1-9, said vehicle production line being provided with a synchronization station provided with an in-place detection mechanism for detecting the carrier vehicle.