CN220592193U - 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, wherein the carrier vehicle comprises a mounting frame and a plurality of moving wheels arranged at the bottom of the mounting frame; the tightening mechanism comprises a mechanical arm and a tightening assembly, and the tightening assembly is used for tightening bolts of a chassis of the vehicle; the synchronous mechanism comprises a jacking component, a clamping component, a protection component and a mounting table, wherein the jacking component comprises a jacking driving piece, and a protruding shaft of the jacking driving piece is connected with the mounting table; the clamping assembly comprises a clamping driving piece, a first clamping piece and a second clamping piece, and an extension shaft of the clamping driving piece is connected with the second clamping piece; the protection component comprises a movable piece, an overload detection piece and an elastic piece, wherein the movable piece comprises a trigger part and a sliding part, the trigger part is connected with the first clamping piece, when the carrier vehicle stops moving, the lifting appliance pushes the movable piece to move, and when the overload detection piece detects the movable piece, the lifting appliance stops moving, so that the tightening component is prevented from being damaged.

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 to add the carrier vehicle, and the carrier vehicle keeps synchronous movement with the vehicle, because the inconvenient operation of staff on the carrier vehicle of removal, consequently carry out automatic tightening to the chassis bolt through adding automatic tightening mechanism on the carrier vehicle, this mode has not only saved the manpower, still reduced the vehicle and moved the time that spends to next station after accomplishing chassis bolt tightening, and then improved production efficiency, but if the carrier vehicle breaks down and leads to the carrier vehicle to stop or the carrier vehicle when the speed is less than the speed of hoist transport vehicle, the hoist removes relatively the carrier vehicle, can lead to the automatic tightening mechanism who is carrying out the tightening operation to be destroyed.

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 an automatic tightening mechanism is damaged when the existing carrier vehicle fails to stop moving.

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 component, a clamping component, a protection component and an installation table, wherein the jacking component comprises a jacking driving piece, and a protruding shaft of the jacking driving piece is connected with the installation table and used for driving the installation table to lift; the clamping assembly comprises a clamping driving piece, a first clamping piece and a second clamping piece, wherein the clamping driving piece is arranged on the mounting table, an extending shaft of the clamping driving piece is connected with the second clamping piece and used for driving the second clamping piece to be close to or far away from the first clamping piece, and the first clamping piece is in sliding fit with the mounting table; the protection assembly comprises a movable piece, an overload detection piece and an elastic piece, wherein the movable piece comprises a trigger part and a sliding part which are connected with each other, the trigger part is connected with the first clamping piece, the mounting table is provided with a fixed block which is in sliding fit with the sliding part, two ends of the elastic piece are respectively abutted to the fixed block and the trigger part, one end, far away from the trigger part, of the sliding part is arranged at intervals with the overload detection piece, and the overload detection piece is used for detecting the sliding part;

the tightening mechanism comprises a mechanical arm and a tightening assembly, wherein the mechanical arm is installed on the installation frame and used for driving the tightening assembly to move, and the tightening assembly is used for tightening bolts of the chassis of the vehicle.

In one embodiment, the fixing block is provided with a through hole for the sliding part to pass through, and the sliding part is in sliding fit with the through hole.

In an embodiment, a first sliding rail is arranged on the mounting table, the first sliding rail is in sliding fit with the first clamping piece, and the extending direction of the first sliding rail is consistent with the extending direction of the through hole.

In an embodiment, the second clamping member includes a clamping portion and a connecting portion that are connected to each other, the connecting portion is connected to the output shaft of the clamping driving member, the clamping driving member drives the clamping portion to approach or depart from the first clamping member through the connecting portion, and the mounting table is provided with a second sliding rail, and the second sliding rail is in sliding fit with the connecting portion.

In an embodiment, the clamping assembly further comprises an in-place detection piece, the mounting table is provided with a clamping station and a station to be clamped, the clamping driving piece is used for driving the clamping portion to reciprocate between the clamping station and the station to be clamped through the connecting portion, and the in-place detection piece is arranged at the clamping station and is used for detecting the clamping portion.

In an embodiment, the number of the second sliding rails is at least two, and at least two second sliding rails are arranged at intervals.

In an embodiment, the elastic member is a spring, the spring is located between the trigger portion and the fixed block, and the spring is wound around the periphery of the sliding portion.

In an embodiment, the jacking assembly further comprises a third sliding rail extending along the vertical direction, the third sliding rail is mounted on the mounting frame, and the mounting table is in sliding connection with the third sliding rail.

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, the in-place detection mechanism is used for detecting whether the carrier vehicle moves to the 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 lifting driving piece drives the mounting table to ascend, after the mounting 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 frame and the lifting appliance is realized through the plurality of rollers positioned at the bottom of the mounting frame; after the synchronous is accomplished to mounting bracket and hoist, the bolt of vehicle chassis is tightened to the arm drive tightening subassembly, in the increase tightening process, if the vehicle self breaks down or the vehicle touches the foreign matter and leads to the vehicle to stop moving, the hoist continues to remove along preceding direction, the hoist of removal can promote first holder and slide to the relative mount table of the direction of keeping away from the second holder, the first holder of removal can drive the sliding part through the trigger part and remove, so that the one end that the trigger part was kept away from to the sliding part is removed to the direction that is close to overload detection spare, the elastic component is compressed simultaneously, when overload detection spare detects that the sliding part is located its detection zone, the hoist stops removing, avoid tightening the subassembly and be destroyed.

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 perspective view of a synchronization mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic top view of the vehicle chassis tightening apparatus of FIG. 3;

fig. 5 is a schematic structural diagram of a driving assembly according to an embodiment of the utility model.

Reference numerals illustrate:

1	vehicle chassis tightening device	11	Carrier loader
				111	Mounting rack	112	Movable wheel
113	Driving assembly	1131	Walking driving part
				1132	Walking wheel	114	Fixed block
1141	Through hole	12	Synchronous mechanism
				121	Jacking assembly	1211	Jacking driving piece
1212	Third slide rail	122	Clamping assembly
				1221	Clamping driving piece	1222	First clamping piece
1223	Second clamping piece	1224	Clamping part
				1225	Connecting part	1226	In-place detection piece
123	Protection assembly	1231	Overload detecting piece
				1232	Elastic piece	1233	Movable piece
1234	Trigger part	1235	Sliding part
				124	Mounting table	1241	First slide rail
1242	Second slide rail	1243	Clamping station
				1244	Station to be clamped	13	Tightening mechanism
131	Mechanical arm	132	Tightening assembly

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 utility model provides a vehicle chassis tightening device 1, as shown in fig. 1-4, the vehicle chassis tightening device 1 comprises a carrier vehicle 11, a synchronous 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 component 121, a clamping component 122, a protection component 123 and a mounting table 124, wherein the jacking component 121 comprises a jacking driving piece 1211, and an extension shaft of the jacking driving piece 1211 is connected with the mounting table 124 to drive the mounting table 124 to lift; the clamping assembly 122 comprises a clamping driving member 1221, a first clamping member 1222 and a second clamping member 1223, wherein the clamping driving member 1221 is mounted on the mounting platform 124, and an extension shaft of the clamping driving member 1221 is connected with the second clamping member 1223 to drive the second clamping member 1223 to approach or separate from the first clamping member 1222, and the first clamping member 1222 is slidably engaged with the mounting platform 124; the protection assembly 123 comprises a movable member 1233, an overload detection member 1231 and an elastic member 1232, wherein the movable member 1233 comprises a trigger portion 1234 and a sliding portion 1235 which are mutually connected, the trigger portion 1234 is connected with the first clamping member 1222, the mounting table 124 is provided with a fixed block 114 which is in sliding fit with the sliding portion 1235, two ends of the elastic member 1232 are respectively abutted with the fixed block 114 and the trigger portion 1234, one end, far away from the trigger portion 1234, of the sliding portion 1235 is arranged at intervals with the overload detection member 1231, and the overload detection member 1231 is used for detecting the sliding portion 1235; the tightening mechanism 13 comprises a mechanical arm 131 and a tightening assembly 132, the mechanical arm 131 is arranged on the installation frame 111, the mechanical arm 131 is used for driving the tightening assembly 132 to move, the tightening assembly 132 comprises a tightening gun, a telescopic arm, a rotating block and an installation assembly, one end of the tightening gun is connected with a tightening head, the tightening gun vertically penetrates through the installation assembly, the tightening head is located above the installation assembly, one end of the mechanical arm 131 is arranged on the installation frame 111, the other end of the mechanical arm 131 is connected with the installation assembly, one end of the rotating block is rotatably arranged on the installation frame 111 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 arranged on the other end of the rotating block through a second rotating shaft which is horizontally arranged, the second end is connected with the installation assembly, and the mechanical arm 131 is used for driving the installation assembly to drive the tightening gun to move so that the tightening gun can tighten bolts of a vehicle chassis.

Wherein, the lifting vehicle of the lifting appliance moves to the upper side of the synchronizing mechanism 12, the lifting driving piece 1211 drives the mounting table 124 to ascend, after the mounting table 124 ascends to the height that the clamping assembly 122 can clamp the lifting appliance, the clamping driving piece 1221 drives the second clamping piece 1223 to move towards the direction of the first clamping piece 1222, so that the first clamping piece 1222 and the second clamping piece 1223 complete the clamping of the lifting appliance, the lifting appliance moves again, and the synchronous movement of the mounting frame 111 and the lifting appliance is realized through the clamping of the clamping assembly 122 to the lifting appliance and a plurality of rollers positioned at the bottom of the mounting frame 111; after the mounting frame 111 and the lifting tool are synchronous, the mechanical arm 131 drives the tightening assembly 132 to tighten the bolts of the chassis of the vehicle, in the tightening process, if the carrier vehicle 11 fails or the carrier vehicle touches a foreign object to cause the carrier vehicle 11 to stop moving, the lifting tool continues to move along the previous direction, the moving lifting tool pushes the first clamping member 1222 to slide towards the direction away from the second clamping member 1223 relative to the mounting table 124, the moving first clamping member 1222 drives the sliding member 1235 to move through the triggering member 1234, so that one end of the sliding member 1235 away from the triggering member 1234 moves towards the direction close to the overload detection member 1231, meanwhile, the elastic member 1232 is compressed, and when the overload detection member 1231 detects the sliding member 1235, the lifting tool stops moving to avoid the tightening assembly 132 from being damaged. It can be appreciated that the overload detecting member 1231 sends detection information to the control module, and the control module controls whether the lifting appliance is stopped according to the detection information, wherein the control module can be a PLC controller or a control cabinet, etc., and when the overload detecting member 1231 detects the sliding part 1235, the detection information is sent to the control module, and then the control module controls the lifting appliance to stop moving. Note that, the jack-up driving member 1211 may be a cylinder or an oil cylinder. According to a preferred embodiment of the present utility model, the jacking driving member 1211 is a jacking cylinder having a cylinder diameter of 140mm and a maximum output force of 426kgf. According to another preferred embodiment of the present utility model, the grip driving member 1221 is a grip cylinder having a cylinder diameter of 125mm and a maximum output force of 736kgf.

It should be noted that, only when the acting force of the lifting tool on the first clamping member 1222 is not less than the elastic force of the elastic member 1232 on the triggering portion 1234 when the overload detecting member 1231 detects the sliding portion 1235, the lifting tool can smoothly send the sliding portion 1235 into the detecting region of the overload detecting member 1231, and when the lifting tool normally drives the carrier vehicle 11 to move, the acting force of the lifting tool on the first clamping member 1222 is less than the elastic force of the elastic member 1232 on the triggering portion 1234 when the overload detecting member 1231 detects the sliding portion 1235, so that the carrier vehicle 11 can move synchronously with the lifting tool, and the function of protecting the tightening mechanism 13 is also provided. It should be further noted that, the lifting appliance needs to apply a large force to the trigger portion 1234 to push the sliding portion 1235 to enter the detection area of the detection member through the trigger portion 1234, and record the acting force as the triggering force, where the elastic member 1232 may be a tokyo spring or a gas spring, and the elastic force of the tokyo spring or the gas spring may be changed to adapt to different triggering force requirements, where the magnitude of the triggering force is generally 35.6kgf-179kgf, so as to control the triggering force in a reasonable range, and avoid that the triggering force is too small to cause false triggering, or avoid that the triggering force is too large to play a role in protecting the device.

Further, the fixed block 114 is provided with a through hole 1141 through which the sliding part 1235 passes, and the sliding part 1235 is slidably engaged with the through hole 1141. Wherein the through-hole 1141 plays a guiding role for the sliding of the sliding part 1235 such that the sliding part 1235 can reciprocally slide in a determined direction, i.e., the sliding part 1235 can reciprocally slide in the extending direction of the through-hole 1141 such that the sliding part 1235 has a determined sliding direction.

The mounting table 124 is provided with a first sliding rail 1241, the first sliding rail 1241 is slidably engaged with the first clamping member 1222, and an extending direction of the first sliding rail 1241 is consistent with an extending direction of the through hole 1141. The moving direction of the first holder 1222 is guided by providing the first slide rail 1241 so that the first holder 1222 can move in a certain direction.

As shown in fig. 3 and 4, the second clamping member 1223 includes a clamping portion 1224 and a connecting portion 1225 that are connected to each other, the connecting portion 1225 is connected to the output shaft of the clamping driving member 1221, the clamping driving member 1221 drives the clamping portion 1224 to approach or separate from the first clamping member 1222 through the connecting portion 1225, the mounting table 124 is provided with a second sliding rail 1242, and the second sliding rail 1242 is slidably engaged with the connecting portion 1225. The second sliding rail 1242 slidably engaged with the connecting portion 1225 is provided on the mounting table 124, so that the connecting portion 1225 can slide more stably relative to the mounting table 124. It should be noted that, the clamping portion 1224 and the first clamping member 1222 are sequentially arranged at intervals along the moving direction of the vehicle, and the lifting appliance applies a force to the first clamping member 1222 to drive the carrier 11 to move. The number of the second sliding rails 1242 is at least two, the at least two second sliding rails 1242 are arranged at intervals, and the guiding of the sliding portion 1235 is enhanced by arranging the at least two second sliding rails 1242, so that reliable support is provided for the sliding portion 1235.

Further, the clamping assembly 122 further includes an in-place detecting member 1226, the mounting platform 124 is provided with a clamping station 1243 and a station 1244 to be clamped, the clamping driving member 1221 is configured to drive the clamping portion 1224 to reciprocate between the clamping station 1243 and the station 1244 to be clamped through the connecting portion 1225, and the in-place detecting member 1226 is configured to detect whether the clamping portion 1224 is located at the clamping station 1243. The in-place detecting member 1226 is provided to determine whether the clamping portion 1224 and the first clamping member 1222 clamp the spreader, and if the in-place detecting member 1226 detects that the clamping portion 1224 is located at the clamping station 1243, it indicates that the clamping portion 1224 and the first clamping member 1222 clamp the spreader, the spreader may continue to move. It should be noted that the in-place detecting member 1226 transmits the detection information to the control module, and the control module determines whether to control the lifting appliance in the stopped state to start moving according to the detection information.

The elastic member 1232 is a spring, which is located between the trigger portion 1234 and the fixed block 114, and the spring is wound around the periphery of the sliding portion 1235. The sliding part 1235 passes through the center of the spring, so that the spring is wound around the periphery of the sliding part 1235, and the spring is positioned through the sliding part 1235, so that the spring is convenient to install. By arranging the elastic piece 1232 between the triggering part 1234 and the fixed block 114, when the lifting appliance pushes the triggering part 1234 to move towards the overload detection piece 1231, the triggering part 1234 presses the elastic piece 1232, the elastic piece 1232 is compressed under force, and the impact of the lifting appliance on the triggering part 1234 is buffered; if the carrier 11 resumes the synchronous movement with the lifting tool, the trigger part 1234 will move to the starting position under the action of the elastic force of the elastic member 1232. It should be further noted that the overload detecting member 1231 may be a photoelectric sensor or an LS travel switch. According to a preferred embodiment of the present utility model, the overload detecting member 1231 is an LS travel switch, and the sliding portion 1235 is moved by pushing the trigger switch of the LS travel switch located in the detection area, so that the LS travel switch can detect that the sliding portion 1235 has entered the detection area.

As shown in fig. 3, the jacking assembly 121 further includes a third sliding rail 1212 extending along the vertical direction, the third sliding rail 1212 is mounted on the mounting frame 111, and the mounting platform 124 is slidably connected to the third sliding rail 1212. By arranging the third slide rail 1212 to be in sliding fit with the mounting table 124, the mounting table 124 can be lifted more stably.

As shown in fig. 5, the carrier 11 further includes a driving assembly 113, where the driving assembly 113 includes a traveling driving member 1131 and a traveling wheel 1132 in transmission connection with the traveling driving member 1131, the traveling driving member 1131 is mounted on the mounting frame 111, and the traveling driving member 1131 is used to drive the traveling wheel 1132 to rotate, so that the traveling wheel 1132 drives the carrier 11 to move. Through setting up drive assembly 113 for after the chassis bolt tightening operation to a car is accomplished to vehicle chassis tightening equipment 1, accessible walking driving piece 1131 drives walking wheel 1132 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 component, a clamping component, a protection component and an installation table, wherein the jacking component comprises a jacking driving piece, and a protruding shaft of the jacking driving piece is connected with the installation table and used for driving the installation table to lift; the clamping assembly comprises a clamping driving piece, a first clamping piece and a second clamping piece, wherein the clamping driving piece is arranged on the mounting table, an extending shaft of the clamping driving piece is connected with the second clamping piece and used for driving the second clamping piece to be close to or far away from the first clamping piece, and the first clamping piece is in sliding fit with the mounting table; the protection assembly comprises a movable piece, an overload detection piece and an elastic piece, wherein the movable piece comprises a trigger part and a sliding part which are connected with each other, the trigger part is connected with the first clamping piece, the mounting table is provided with a fixed block which is in sliding fit with the sliding part, two ends of the elastic piece are respectively abutted to the fixed block and the trigger part, one end, far away from the trigger part, of the sliding part is arranged at intervals with the overload detection piece, and the overload detection piece is used for detecting the sliding part;

the tightening mechanism comprises a mechanical arm and a tightening assembly, wherein the mechanical arm is installed on the installation frame and used for driving the tightening assembly to move, and the tightening assembly is used for tightening bolts of the chassis of the vehicle.

2. The vehicle chassis tightening device according to claim 1, wherein the fixed block is provided with a through hole through which the sliding portion passes, the sliding portion and the through hole being slidably fitted.

3. The vehicle chassis tightening device according to claim 2, wherein a first slide rail is provided on the mount table, the first slide rail is slidably fitted with the first clamp, and an extending direction of the first slide rail is identical to an extending direction of the through hole.

4. The vehicle chassis tightening device according to claim 1, wherein the second clamp member includes a clamp portion and a connecting portion connected to each other, the connecting portion is connected to an output shaft of the clamp driving member, the clamp driving member drives the clamp portion to approach or separate from the first clamp member through the connecting portion, the mount table is provided with a second slide rail, and the second slide rail is slidably fitted to the connecting portion.

5. The vehicle chassis tightening device according to claim 4, wherein the clamping assembly further comprises an in-place detection member, the mounting table is provided with a clamping station and a station to be clamped, the clamping driving member is used for driving the clamping portion to reciprocate between the clamping station and the station to be clamped through the connecting portion, and the in-place detection member is arranged at the clamping station and is used for detecting the clamping portion.

6. The vehicle chassis tightening device according to claim 4, wherein the number of the second slide rails is at least two, and at least two of the second slide rails are arranged at intervals.

7. The vehicle chassis tightening device according to any one of claims 1 to 6, characterized in that the elastic member is a spring, the spring being located between the trigger portion and the fixed block, the spring being wound around the periphery of the sliding portion.

8. The vehicle chassis tightening device according to any one of claims 1 to 6, wherein the jacking assembly further includes a third slide rail extending in a vertical direction, the third slide rail being mounted to the mounting bracket, the mounting table being slidably connected to the third slide rail.

9. The vehicle chassis tightening device according to any one of claims 1 to 6, 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.