Automatic line-changing mechanism and heavy-duty assembly line

Abstract

The present invention relates to an assembly production line for construction machinery truck cranes, and specifically discloses an automatic line transfer mechanism, which includes a line transfer mobile support platform, a ground roller guide groove, a ground charging mechanism, and a first lift and a second lift respectively arranged at both ends of the ground roller guide groove. The line transfer mobile support platform includes a support platform main body and a support platform driving structure capable of driving the support platform main body to move; the ground charging mechanism includes a support platform charging male head and a lifting device connected to the support platform charging male head; both the first lift and the second lift can carry the line transfer mobile support platform to move up and down; the lifting device can drive the support platform charging male head to rise so that the support platform charging male head can be electrically connected to the support platform driving structure, and then drive the line transfer mobile support platform to move along the ground roller guide groove through the support platform driving structure. In addition, the present invention also discloses a heavy-duty assembly line. The structure of the automatic line transfer mechanism of the present invention is simple, the operation is convenient, and the use effect is good.

Description

Technical Field

[0001] The present invention relates to an assembly production line for construction machinery truck cranes, and specifically, to an automatic line transfer mechanism. In addition, the present invention also relates to a heavy-duty assembly line. Background Art

[0002] The assembly line of construction machinery truck cranes includes the assembly of the chassis and the whole vehicle. Generally, in the chassis assembly industry, the form of drag chain conveyor or friction conveyor is adopted, and the form of double-plate chain conveyor is generally adopted for the whole vehicle assembly. After the chassis is assembled, a chassis assembly is formed. The chassis assembly is transferred to the whole vehicle assembly line and after being assembled, a whole vehicle assembly is formed.

[0003] Currently, after the chassis assembly line goes through processes such as frame loading, front and rear axle assembly, frame turning over, tire assembly, filling, etc., a chassis assembly is formed. At this time, the tires are in a state of being about 100 mm off the ground. At the last assembly station, the friction line skateboard is driven to descend integrally by a chain to realize the landing of the vehicle tires. Then, a person drives the chassis assembly off the chassis assembly line, and then drives the chassis assembly to the first station of the whole vehicle assembly line to complete the line transfer process. This method has the following four disadvantages: First, it requires a person to work alone in a single shift for a long time, driving out of the chassis assembly and then driving into the whole vehicle assembly line. Second, a large amount of automobile exhaust gas will be generated during the driving-off process, affecting the workshop environment. Third, there is a relatively large starting noise during the driving process, affecting the workshop operation environment. Fourth, when the vehicle drives into the whole vehicle assembly line, it will cause a relatively large impact on the whole vehicle assembly line body, seriously affecting its service life.

[0004] In view of this, it is necessary to design an automatic line transfer mechanism to solve or overcome the above technical problems. Summary of the Invention

[0005] On the one hand, the technical problem to be solved by the present invention is to provide an automatic line transfer mechanism that can realize the automatic line transfer of the vehicle chassis between the chassis assembly friction line and the whole vehicle assembly line, with a simple structure and good use effect.

[0006] On the other hand, the technical problem to be solved by the present invention is to provide a heavy-duty assembly line, in which the automatic line transfer mechanism can realize the automatic line transfer of the vehicle chassis between the chassis assembly friction line and the whole vehicle assembly line, with a simple structure and good use effect.

[0007] To solve the above technical problems, on the one hand, the present invention provides an automatic line transfer mechanism, which includes a line transfer moving support platform, a plurality of ground roller guide grooves, a ground charging mechanism, and a first lift and a second lift respectively arranged at both ends of the ground roller guide grooves. The line transfer moving support platform includes a support platform main body and a support platform driving structure capable of driving the support platform main body to move; the ground charging mechanism includes a support platform charging male head and a lifting device connected to the support platform charging male head; both the first lift and the second lift can carry the line transfer moving support platform to move up and down; the lifting device can drive the support platform charging male head to rise so that the support platform charging male head can be electrically connected to the support platform driving structure, and then drive the line transfer moving support platform to move along the ground roller guide groove through the support platform driving structure.

[0008] As a preferred embodiment of the present invention, the support platform driving structure includes a roller driving motor, a roller driving roller shaft connected to the roller driving motor, a driving wheel connected to the end of the roller driving roller shaft far from the roller driving motor, and a support platform charging female head electrically connected to the roller driving motor. The driving wheel is arranged on one side of the support platform main body in the length direction, and a driven wheel is arranged on the opposite side of the support platform main body.

[0009] More preferably, the ground charging mechanism further includes a ground charging wire groove arranged between two adjacent lifting devices.

[0010] Further preferably, the lifting device is a lifting cylinder.

[0011] As another preferred embodiment of the present invention, the automatic line transfer mechanism further includes a charging main connector.

[0012] On the other hand, the present invention also provides a heavy-duty assembly line, which sequentially includes a chassis assembly friction line, the automatic line transfer mechanism according to any one of the above technical solutions, a vehicle assembly friction line, a vehicle assembly double-plate chain line, and a third lift arranged between the vehicle assembly friction line and the vehicle assembly double-plate chain line along the production line process flow. The chassis assembly friction line includes a friction large slide plate and a friction line driving motor for driving the friction large slide plate to slide along the slide plate guiding rollers; the friction line driving motor can drive the friction large slide plate to slide along the slide plate guiding rollers. The first lift, the second lift, and the third lift can all lift the line transfer moving support platform so that the line transfer moving support platform can be adapted to the heights of the chassis assembly friction line, the vehicle assembly friction line, and the vehicle assembly double-plate chain line respectively, and then the friction large slide plate can move from the chassis assembly friction line to the vehicle assembly friction line and the vehicle assembly double-plate chain line in sequence.

[0013] As a specific structural form of the present invention, the chassis assembly friction line further includes a skateboard support platform, on which skateboard guiding rollers are arranged. A chain lifting mechanism and a steel structure support are provided on the side of the skateboard support platform, and a skateboard auxiliary guiding structure is arranged between two adjacent skateboard guiding rollers.

[0014] More specifically, the friction skateboard includes a front sub-skateboard, a rear sub-skateboard detachably connected to the front sub-skateboard, skateboard rollers arranged on the lower end surfaces of the front sub-skateboard and the rear sub-skateboard, and a skateboard support arranged on the upper end surface of the front sub-skateboard. The skateboard support is arranged in two rows and is located at one end of the front sub-skateboard away from the rear sub-skateboard. The skateboard rollers can roll on the upper surfaces of the skateboard support platform and the steel structure support.

[0015] As another specific structural form of the present invention, the vehicle assembly double-plate chain line includes a double-plate chain, a double-plate chain driving mechanism connected to the double-plate chain, and an underground return track arranged below the double-plate chain.

[0016] As yet another specific structural form of the present invention, the vehicle assembly friction line includes a friction line driving motor and lateral skateboard guiding rollers. The friction line driving motor can drive the front sub-skateboard and the rear sub-skateboard of the friction skateboard to move forward, and the lateral skateboard guiding rollers can provide frictional driving force to enable the front sub-skateboard and the rear sub-skateboard to break away from the second elevator.

[0017] Through the above technical solutions, the automatic line transfer mechanism of the present invention sets a plurality of ground roller guide grooves on the ground. A first elevator and a second elevator are arranged at both ends of the ground roller guide grooves. The first elevator and the second elevator can drive the line transfer moving support platform to move up and down, and the line transfer moving support platform can also move along the ground roller guide grooves, so that the line transfer moving support platform can move from one end of the automatic line transfer mechanism to the other end. The heights of the first elevator and the second elevator can be set to be the same or different, so as to meet the line transfer requirements of different production lines, and the use effect is good.

[0018] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a specific embodiment of the automatic line transfer mechanism of the present invention;

[0020] Figure 2 is Figure 1 the A-A sectional structural diagram of

[0021] Figure 3 is Figure 1 the B-B sectional structural diagram of

[0022] Figure 4 It is a schematic structural diagram of a specific embodiment of the chassis assembly friction line of the present invention;

[0023] Figure 5 is Figure 4 the front view of

[0024] Figure 6 It is a schematic structural diagram of a specific embodiment of the friction large slide plate of the present invention;

[0025] Figure 7 is Figure 6 the front view of

[0026] Figure 8 It is a schematic structural diagram of a specific embodiment of the automatic line transfer mechanism of the present invention;

[0027] Figure 9 is Figure 8 the C-C sectional view of

[0028] Figure 10 It is a schematic structural diagram of a specific embodiment of the line transfer moving support platform of the present invention;

[0029] Figure 11 is Figure 10 the front view of

[0030] Figure 12 It is a schematic structural diagram of a specific embodiment of the ground charging mechanism of the present invention;

[0031] Figure 13 is Figure 12 the front view of

[0032] Figure 14 It is a schematic structural diagram of a specific embodiment of the vehicle assembly double plate chain line of the present invention;

[0033] Figure 15 is Figure 14 the D-D sectional view of

[0034] Explanation of reference numerals

[0035] 1 Chassis assembly friction line 101 Friction large slide plate

[0036] 1011 Front sub-slide plate 1012 Rear sub-slide plate

[0037] 1013 Slide plate roller 1014 Slide plate support

[0038] 102 Slide plate guide roller 103 Friction line drive motor

[0039] 104 Slide plate support platform 105 Chain lifting mechanism

[0040] 106 Steel structure support 107 Skateboard auxiliary guiding structure

[0041] 2 Automatic line transfer mechanism 201 Line transfer moving support platform

[0042] 2011 Support platform main body 2012 Driving wheel

[0043] 2013 Driven wheel 2014 Roller drive shaft

[0044] 2015 Roller drive motor 2016 Roller locking pin

[0045] 2017 Support platform charging female head 202 First elevator

[0046] 203 Ground roller guide groove 204 Ground charging mechanism

[0047] 2041 Support platform charging male head 2042 Cylinder guide wheel lifting structure

[0048] 2043 Ground charging wire groove 205 Charging main connector

[0049] 206 Second elevator 3 Vehicle assembly friction line

[0050] 4 Vehicle assembly double - plate chain line 401 Double - plate chain

[0051] 402 Double - plate chain drive mechanism 403 Underground return track

[0052] 5 Third elevator Detailed implementation manners

[0053] The following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the detailed implementation manners described herein are only for explaining and understanding the present invention, and are not used to limit the present invention.

[0054] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] As Figure 8 and Figure 9 shown, the present invention provides an automatic line transfer mechanism, including a line transfer moving support platform 201, a plurality of ground roller guide grooves 203, a ground charging mechanism 204, and a first elevator 202 and a second elevator 206 respectively arranged at both ends of the ground roller guide groove 203, wherein

[0056] The wire transfer mobile support platform 201 includes a support platform main body 2011 and a support platform drive structure capable of driving the movement of the support platform main body 2011;

[0057] The ground charging mechanism 204 includes a support platform charging male head 2041 and a lifting device 2042 connected to the support platform charging male head 2041;

[0058] Both the first lift 202 and the second lift 206 can carry the wire transfer mobile support platform 201 up and down; the lifting device 2042 can drive the support platform charging male head 2041 to rise so that the support platform charging male head 2041 can be electrically connected to the support platform drive structure, and then drive the wire transfer mobile support platform 201 to move along the ground roller guide groove 203 through the support platform drive structure.

[0059] As Figure 8 shown, in the automatic wire transfer mechanism of the present invention, the ground roller guide groove 203 is arranged on the ground, and there is also a pit on the ground. The first lift 202, the second lift 206 and the ground charging mechanism 204 are all arranged in the pit. The wire transfer mobile support platform 201 is arranged above the ground and can move along the ground roller guide groove 203. Therefore, when the first lift 202, the second lift 206 and the ground charging mechanism 204 are not working, the upper end surfaces of the three are all lower than the ground, which does not affect the normal use of the wire transfer mobile support platform 201 or other equipment. Both the first lift 202 and the second lift 206 can lift the wire transfer mobile support platform 201 and stop at any position within the stroke of the first lift 202 and the second lift 206. Several fixed heights can also be set for the docking positions of the first lift 202 and the second lift 206, which is more conducive to the transfer of the wire transfer mobile support platform 201. At the same time, because each component in the automatic wire transfer mechanism operates independently, multiple wire transfer mobile support platforms 201 can operate simultaneously in the automatic wire transfer mechanism, and the working efficiency is high.

[0060] As a preferred embodiment of the present invention, as Figure 10 and Figure 11 shown, the support platform drive structure includes a roller drive motor 2015, a roller drive shaft 2014 connected to the roller drive motor 2015, a driving wheel 2012 connected to one end of the roller drive shaft 2014 away from the roller drive motor 2015, and a support platform charging female head 2017 electrically connected to the roller drive motor 2015. The driving wheel 2012 is arranged on one side of the support platform main body 2011 in the length direction, and a driven wheel 2013 is arranged on the opposite side of the support platform main body 2011.

[0061] From Figure 10As can be seen, the roller drive motor 2015 drives the driving wheel 2012 to rotate through the roller drive shaft 2014, and the driven wheel 2013 rotates following the driving wheel 2012. The driving wheels 2012 are arranged on both sides of the roller drive motor 2015, and the distance between the two driving wheels 2012 is determined according to the distance between the two ground roller guide grooves 203. That is to say, both driving wheels 2012 can roll in the ground roller guide grooves 203, thereby driving the wire transfer moving support platform 201 to move on the ground between the first lift 202 and the second lift 206. From this point, it can be seen that the distance between the first lift 202 and the second lift 206 can be determined according to actual usage requirements and is not limited by the limitations of processing equipment. It can be imagined that in order to facilitate the rolling of the driving wheels 2012, roller guide rails can also be provided in the ground roller guide grooves 203, and the usage effect is better. And in order to control the moving position of the wire transfer moving support platform 201, detection equipment can also be provided in the ground roller guide grooves 203, so as to be able to control the moving speed, stopping position, etc. of the wire transfer moving support platform 201, and the usage effect is better.

[0062] More preferably, as Figure 12 and Figure 13 shown, the ground charging mechanism 204 further includes a ground charging wire groove 2043 arranged between two adjacent lifting devices 2042. Circuits and air paths can be laid in the ground charging wire groove 2043, which can play a protective role.

[0063] As another preferred embodiment of the present invention, the lifting device 2042 is a lifting cylinder. At the same time, a control device is also included, which controls the rising or falling of the lifting cylinder by connecting the air path. Of course, it can be imagined that in addition to the lifting cylinder, the lifting device 2042 can also be set as an oil cylinder or other structures or devices that can rise or fall.

[0064] As yet another preferred embodiment of the present invention, the automatic wire transfer mechanism 2 further includes a charging main connector 205. A main connector installation groove is provided on the ground, and the charging main connector 205 is arranged in the main connector installation groove.

[0065] On the other hand, the present invention also provides a heavy-duty assembly line, as Figures 1 to 3 shown, which sequentially includes a chassis assembly friction line 1, an automatic wire transfer mechanism 2 according to any one of the above technical solutions, a vehicle assembly friction line 3, a vehicle assembly double-plate chain line 4, and a third lift 5 arranged between the vehicle assembly friction line 3 and the vehicle assembly double-plate chain line 4, where

[0066] The chassis assembly friction line 1 includes a friction large slide plate 101 and a friction line drive motor 103 that drives the friction large slide plate 101 to slide along the slide guide rollers 102;

[0067] The friction wire drive motor 103 can drive the friction large slide plate 101 to slide along the slide plate guide roller 102. The first lift 202, the second lift 206 and the third lift 5 can all lift the wire transfer moving support platform 201 so that the wire transfer moving support platform 201 can be adapted to the heights of the chassis assembly friction wire 1, the vehicle assembly friction wire 3 and the vehicle assembly double plate chain wire 4 respectively. Furthermore, the friction large slide plate 101 can move from the chassis assembly friction wire 1 to the vehicle assembly friction wire 3 and the vehicle assembly double plate chain wire 4 in sequence.

[0068] From Figures 1 to 3 It can be seen that in the automatic wire transfer mechanism of the present invention, the chassis assembly friction wire 1 is connected to the vehicle assembly friction wire 3 through the automatic wire transfer mechanism 2. In the chassis assembly friction wire 1, a chassis assembly is formed through technological processes such as vehicle frame up-line, front and rear axle assembly, vehicle frame turnover, tire assembly, filling, etc. At this time, the tires in the chassis assembly are in a state of being about 100 mm off the ground. The chassis assembly is arranged on the friction large slide plate 101. The friction wire drive motor 103 provides driving force, so that the friction large slide plate 101 carrying the chassis assembly gradually moves from the up-line end of the chassis assembly friction wire 1 to the down-line end of the chassis assembly friction wire 1 along the slide plate guide roller 102. The end of the down-line end of the chassis assembly friction wire 1 is connected to the automatic wire transfer mechanism 2. The friction large slide plate 101 can carry the chassis assembly and transfer it to the vehicle assembly friction wire 3 through the automatic wire transfer mechanism 2. The wire transfer process does not require manual driving. After driving out of the chassis assembly friction wire 1, it then drives into the first station of the vehicle assembly friction wire 3, easily completing the wire transfer operation. And during the wire transfer process, no extra noise and exhaust gas are generated, which will not affect the workshop operation environment. After passing through the vehicle assembly friction wire 3, during the entire assembly process of the vehicle assembly friction wire 3, the friction large slide plate 101 can also move on the vehicle assembly friction wire 3. Similarly, the friction large slide plate 101 can also move on the vehicle assembly double plate chain wire 4 to complete the overall machine assembly technological process. Similarly, the entire process does not require manual wire transfer, effectively saving labor costs, and there will be no exhaust gas emissions and no noise pollution during the wire transfer process, so it will not affect the workshop operation environment.

[0069] It can be seen that the first lift 202 of the present invention can achieve the precise docking of the wire transfer moving support platform 201 and the chassis assembly friction wire 1. The second lift 206 can achieve the precise docking of the moving support platform 201 and the vehicle assembly friction wire 3. The first lift 202 and the second lift 206 act together to transfer the friction large slide plate 101 on the chassis assembly friction wire 1 to the vehicle assembly friction wire 3, realizing the conversion between assembly lines.

[0070] As a specific structural form of the present invention, such as Figure 4 and Figure 5As shown, the chassis assembly friction line 1 further includes a skateboard support platform 104. The skateboard guiding rollers 102 are arranged on the skateboard support platform 104. A chain lifting mechanism 105 and a steel structure support 106 are provided on the side of the skateboard support platform 104. A skateboard auxiliary guiding structure 107 is provided between two adjacent skateboard guiding rollers 102.

[0071] In the chassis assembly friction line 1 of the present invention, the chassis assembly friction line 1 includes a friction large skateboard 101, skateboard guiding rollers 102, a friction line driving motor 103, a skateboard support platform 104, a chain lifting mechanism 105 and a steel structure support 106. The friction large skateboard 101 abuts against the upper end surface of the skateboard support platform 104 and can slide along the skateboard support platform 104. Both the skateboard guiding rollers 102 and the skateboard auxiliary guiding structure 107 can limit the crosstalk of the friction large skateboard 101 in the width direction of the skateboard support platform 104, improve the moving accuracy of the friction large skateboard 101, and thus can improve the installation accuracy of the chassis assembly.

[0072] More specifically, as Figure 6 and Figure 7 shown, the friction large skateboard 101 includes a front sub-skateboard 1011, a rear sub-skateboard 1012 detachably connected to the front sub-skateboard 1011, skateboard rollers 1013 provided on the lower end surfaces of the front sub-skateboard 1011 and the rear sub-skateboard 1012, and a skateboard support 1014 provided on the upper end surface of the front sub-skateboard 1011. The skateboard support 1014 is arranged in two rows and is provided at one end of the front sub-skateboard 1011 far from the rear sub-skateboard 1012. The skateboard rollers 1013 can roll on the upper surfaces of the skateboard support platform 104 and the steel structure support 106.

[0073] From Figure 6 and Figure 7 it can be seen that the front sub-skateboard 1011 and the rear sub-skateboard 1012 are detachably connected to form the main structure of the friction large skateboard 101. During the assembly process, connection or disassembly can be achieved, which is convenient for the assembly process and installation requirements, with a flexible structure and good assembly effect. Of course, it can be imagined that the main structure of the friction large skateboard 101 can also be formed by at least three sub-skateboards detachably connected, depending on the actual installation and line transfer requirements. However, too many connection parts will reduce the overall strength of the friction large skateboard 101. Therefore, if the number of sub-skateboards is large, a strengthening structure can be provided at the connection parts between two adjacent sub-skateboards, which can effectively improve the overall strength of the friction large skateboard 101 and also belongs to the protection scope of the present invention.

[0074] As Figure 14 and Figure 15As shown in the figure, as another specific structural form of the present invention, the vehicle assembly double-plate chain line 4 includes a double-plate chain 401, a double-plate chain drive mechanism 402 connected to the double-plate chain 401, and an underground return track 403 disposed below the double-plate chain 401. The third lift 5 can achieve the tire landing of the chassis assembly and the precise docking of the friction large slide plate 101 and the underground return track 403.

[0075] As yet another specific structural form of the present invention, the vehicle assembly friction line 3 includes a friction line drive motor and lateral slide plate guide rollers. The friction line drive motor can drive the front sub-slide plate 1011 and the rear sub-slide plate 1012 of the friction large slide plate 101 to move forward, and the lateral slide plate guide rollers can provide frictional driving force to enable the front sub-slide plate 1011 and the rear sub-slide plate 1012 to disengage from the second lift 206.

[0076] The working process of the heavy-duty assembly line of the present invention is as follows:

[0077] First, the vehicle frame is hoisted onto the friction large slide plate 101. The upper end surface of the slide plate support 1014 abuts against the vehicle frame. The friction large slide plate 101 moves forward under the driving action of the friction line drive motor 103 and the frictional drive of the slide plate rollers 1013. After sequentially completing processes such as hoisting of the front and rear axle assemblies, vehicle frame turning over, tire assembly, and filling, the friction large slide plate 101 moves to the last station of the chassis assembly friction line 1.

[0078] Second, the front sub-slide plate 1011 and the rear sub-slide plate 1012 of the friction large slide plate 101 are disengaged. The first lift 202 lifts the transfer line moving support platform 201 to an appropriate height, which is the upper end surface of the transfer line moving support platform 201 being flush with the lower roller surface of the friction large slide plate 101. The front sub-slide plate 1011 and the chassis assembly placed on the front sub-slide plate 1011 move onto the transfer line moving support platform 201. Then, the transfer line moving support platform 201 moves under the action of the first lift 202. At this time, the rolling wheel surface of the transfer line moving support platform 201 is flush with the ground roller guide groove 203.

[0079] Third, the ground charging mechanism 204 lifts, and the docking of the support platform charging male head 2041 and the support platform charging female head 2017 is completed. The transfer line moving support platform 201 slowly rotates to the position of the second lift 206, that is, the front end of the vehicle assembly friction line 3, under the drive of the motor. After the transfer line moving support platform 201 finishes moving, the ground charging mechanism 204 descends to the initial position, that is, the position flush with the ground.

[0080] Fourth, the second lift 206 lifts the moving support platform 201 and the front sub-slide plate 1011 and the chassis assembly disposed on the moving support platform 201 to an appropriate position, that is, the position where the upper end surface of the moving support platform 201 is flush with the lower roller surface of the friction large slide plate 101.

[0081] Fifth, the front sub-skateboard 1011 and the chassis assembly move forward under the frictional drive of the friction line drive motor and the lateral skateboard guiding rollers, disengaging from the second elevator 206. The second elevator 206 lifts the moving support platform 201 to an appropriate height, that is, the rolling wheel surface of the moving support platform 201 is flush with the ground roller guide groove 203. The ground charging mechanism 204 lifts, completing the docking of the support platform charging male head 2041 and the support platform charging female head 2017. The line-transfer moving support platform 201 is line-transferred to the position of the first elevator 202 under the drive of the motor. The first elevator 202 lifts the moving support platform 201 to make the rolling wheel surface of the moving support platform 201 flush with the ground roller guide groove 203, and then moves the rear sub-skateboard 1012 to the front end of the vehicle assembly friction line 3 in the same manner as the above-mentioned front sub-skateboard 1011;

[0082] Sixth, after the front sub-skateboard 1011 and the rear sub-skateboard 1012 are connected at the front end of the vehicle assembly friction line 3, they move to the third elevator 5. The front sub-skateboard 1011 and the rear sub-skateboard 1012 are then disconnected. The third elevator 5 moves the front sub-skateboard 1011 and the rear sub-skateboard 1012 from the vehicle assembly friction line 3 to the vehicle assembly double-plate chain line 4 respectively. The front sub-skateboard 1011 and the rear sub-skateboard 1012 are connected again and continue the assembly operation;

[0083] Seventh, the friction large skateboard 101 returns to the chain lifting mechanism 105 at the front end of the chassis assembly friction line to prepare for the next cycle. The vehicle moves forward with the double-plate chain 401 and completes the installation of each process in turn and then exits the line.

[0084] As can be seen from the working process of the heavy-load assembly line of the present invention described above, the automatic line-transfer mechanism of the present invention has the following advantages:

[0085] First, the friction large skateboard 101 moves forward under the drive of the friction line drive motor and the lateral skateboard guiding rollers, which can not only realize the assembly on the production line but also realize the overall movement after fixed-point installation. The noise of the entire vehicle assembly friction line 3 is lower than 60 db, and it runs smoothly and reliably, is energy-saving and efficient, and there is no oil pollution throughout the process.

[0086] Second, the overall width of the friction large skateboard 101 is set to be less than 1 m, which is less than the distance between the inner sides of the two tires on both sides of the vehicle, meeting the requirement for stable installation inside the lower side of the vehicle. Support jigs are provided on the friction large skateboard 101, making the friction large skateboard 101 more stable and reliable under heavy-load conditions and better corresponding to the current planned automatic chassis support type change.

[0087] Third, the transfer line moving support table 201 can be lifted under the action of the first lift 202, the second lift 206 and the third lift 5, so as to accurately move the front sub-slide plate 1011 and the rear sub-slide plate 1012 respectively, and realize the entry of the front sub-slide plate 1011 and the rear sub-slide plate 1012 into the transfer line moving support table 201, the vehicle assembly friction line 3 and the vehicle assembly double-plate chain line 4. Among them, a roller lock pin 2016 is provided on the transfer line moving support table 201, which can realize the firm connection between the front sub-slide plate 1011 and the rear sub-slide plate 1012 and the transfer line moving support table 201.

[0088] Fourth, the friction large slide plate 101 is set to be detachably connected between the front sub-slide plate 1011 and the rear sub-slide plate 1012. The length of the front sub-slide plate 1011 is set to 9m, which can meet the support requirements of the chassis assemblies of most models in the current market. The length of the rear sub-slide plate 1012 is set to 5m, which can cooperate with the front sub-slide plate 1011 to meet the basic requirement of the station length of 14m. It can effectively reduce the length of the transfer line moving support table 201 and the size of the pit, save costs, and is more stable and beautiful.

[0089] Fifth, the ground roller guide groove 203 plays a guiding role. Generally, it is set in the form of a narrow arc-shaped groove structure, and the width is set to be less than 30mm, which is adapted to the support traveling wheels of the transfer line moving support table 201 and does not affect the passage of each AGV on the logistics channel.

[0090] Sixth, the transfer line moving support table 201 itself does not have power. Therefore, through the lifting of the ground charging mechanism 204, the docking of the support table charging male head 2041 and the support table charging female head 2017 is realized to supply power to the motor, and then drive the transfer line moving support table 201 to move along the ground roller guide groove 203. The initial position of the ground charging mechanism 204 is set to be flush with the ground, which is not only beautiful but also does not affect the operation of other equipment. And the upper part of the ground charging mechanism 204 is set to be able to bear 300kg / m 2 Above, it does not affect the operation of various AGVs in the intermediate logistics channel.

[0091] Seventh, the first lift 202, the second lift 206 and the third lift 5 are set in the form of a front and rear double-lift combination, which can better absorb the front and rear sheets on the upper part of the transfer line moving support table 201, making the lifting more stable and reliable.

[0092] Eighth, if an abnormality occurs in the chassis assembly, the first lift 202 can adjust the transfer line moving support table 201 to a position flush with the ground, and a high-load-bearing structure can be set below the tires on both sides to meet the requirements of abnormal reverse off-line. The setting is more flexible and meets more assembly requirements.

[0093] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0094] In addition, it should be noted that, in the various specific technical features described in the above specific embodiments, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0095] Furthermore, any combination can be made among the various different embodiments of the present invention, as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. An overload assembly line, characterized in that, The production line process flow sequentially includes a chassis assembly friction line (1), an automatic line transfer mechanism (2), a vehicle assembly friction line (3), a vehicle assembly double-plate chain line (4), and a third elevator (5) provided between the vehicle assembly friction line (3) and the vehicle assembly double-plate chain line (4), wherein the chassis assembly friction line (1) includes a friction large slide plate (101) and a friction line drive motor (103) for driving the friction large slide plate (101) to slide along slide plate guide rollers (102); the automatic line transfer mechanism (2) includes a line transfer moving support platform (201), a plurality of ground roller guide grooves (203), a ground charging mechanism (204), and a first elevator (202) and a second elevator (206) respectively provided at both ends of the ground roller guide grooves (203). The line transfer moving support platform (201) includes a support platform main body (2011) and a support platform drive structure capable of driving the support platform main body (2011) to move. The ground charging mechanism (204) includes a support platform charging male head (2041) and a lifting device (2042) connected to the support platform charging male head (2041); the friction line drive motor (103) can drive the friction large slide plate (101) to slide along the slide plate guide rollers (102). The first elevator (202), the second elevator (206), and the third elevator (5) can all lift the line transfer moving support platform (201) so that the line transfer moving support platform (201) can be adapted to the heights of the chassis assembly friction line (1), the vehicle assembly friction line (3), and the vehicle assembly double-plate chain line (4) respectively, and further enable the friction large slide plate (101) to move sequentially from the chassis assembly friction line (1) to the vehicle assembly friction line (3) and the vehicle assembly double-plate chain line (4).

2. The heavy-load assembly line according to claim 1, wherein The support platform drive structure includes a roller drive motor (2015), a roller drive shaft (2014) connected to the roller drive motor (2015), a driving wheel (2012) connected to the end of the roller drive shaft (2014) away from the roller drive motor (2015), and a support platform charging female head (2017) electrically connected to the roller drive motor (2015). The driving wheel (2012) is provided on one side of the support platform main body (2011) in the length direction, and a driven wheel (2013) is provided on the opposite side of the support platform main body (2011).

3. The heavy-load assembly line according to claim 1, wherein The ground charging mechanism (204) further includes a ground charging wire groove (2043) provided between two adjacent lifting devices (2042).

4. The heavy-load assembly line according to claim 1, wherein The lifting device (2042) is a lifting cylinder.

5. The heavy-load assembly line according to claim 1, wherein The automatic line transfer mechanism (2) further includes a charging main connector (205).

6. The heavy-load assembly line according to claim 1, characterized in that, The chassis assembly friction line (1) further includes a skateboard support table (104). The skateboard guide rollers (102) are arranged on the skateboard support table (104). A chain lifting mechanism (105) and a steel structure support (106) are provided on the side of the skateboard support table (104). A skateboard auxiliary guiding structure (107) is provided between two adjacent skateboard guide rollers (102).

7. The heavy-load assembly line according to claim 6, characterized in that, The friction skateboard (101) includes a front sub-skateboard (1011), a rear sub-skateboard (1012) detachably connected to the front sub-skateboard (1011), skateboard rollers (1013) provided on the lower end surfaces of the front sub-skateboard (1011) and the rear sub-skateboard (1012), and a skateboard support (1014) provided on the upper end surface of the front sub-skateboard (1011). The skateboard support (1014) is arranged in two rows and is provided at one end of the front sub-skateboard (1011) away from the rear sub-skateboard (1012). The skateboard rollers (1013) can roll on the upper surfaces of the skateboard support table (104) and the steel structure support (106).

8. The heavy-load assembly line according to any one of claims 1 to 7, characterized in that, The vehicle assembly double-chain line (4) includes a double-chain (401), a double-chain driving mechanism (402) connected to the double-chain (401), and an underground return track (403) provided below the double-chain (401).

9. The heavy-load assembly line according to any one of claims 1 to 7, characterized in that, The vehicle assembly friction line (3) includes a friction line driving motor and lateral skateboard guide rollers. The friction line driving motor can drive the front sub-skateboard (1011) and the rear sub-skateboard (1012) of the friction skateboard (101) to move forward. The lateral skateboard guide rollers can provide frictional driving force so that the front sub-skateboard (1011) and the rear sub-skateboard (1012) can be separated from the second elevator (206).

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