Automatic delivery system and automatic delivery method for commercial vehicle body

Abstract

The present invention relates to an automatic delivery system for commercial vehicle bodies, including a kanban car and a kanban car parking centering assistance system; the kanban car includes a bidirectional powered straight roller bed; the bidirectional powered straight roller bed docks with the roller bed in the triple lift used for delivery and delivery during delivery; the kanban car parking centering assistance system is used to assist in maintaining the parking positioning accuracy of the kanban car. The present invention also relates to an automatic delivery method for commercial vehicle bodies, including the steps of: placing an empty kanban car into a kanban car parking space; calibrating the parking accuracy of the kanban car; delivering the finished body to the delivery port; lowering the finished body to the same level as the kanban car; pushing the skid body and the finished body into the kanban car together; repeating the steps until the delivery work is completed. The present invention reduces labor costs and effectively improves the degree of automation in the workshop; avoids damage and eliminates drop accuracy; does not require manual work; the finished body directly enters the kanban car and is automatically delivered; and reduces quality problems caused by component damage due to manual lifting.

Description

Technical Field

[0001] The invention relates to the technical field of automobile assembly and transmission, and in particular to an automatic delivery system and an automatic delivery method for a commercial vehicle body. Background Art

[0002] The manufacturing process of commercial vehicles involves the transportation of the entire assembly. As the largest and most basic component of commercial vehicles, the transportation of the body is very important. One of the links in the body transportation process is delivery.

[0003] The so-called delivery can be simply understood as the interface for transferring the car body from one area to another; this interface includes both related equipment and related work processes, and is a complete operating system.

[0004] At present, in terms of existing technology, automobile manufacturers generally adopt manual delivery, specifically:

[0005] The first step is to manually open the door of the finished car body to a certain angle;

[0006] The second step is to use the remote control hook to hang the finished product on the left and right door frames of the vehicle body;

[0007] The third step is to lift the finished car body to a suitable height and move it above the kanban car through an overhead crane;

[0008] The fourth step is to place the finished car body onto the skid of the kanban truck to complete the delivery of the finished car body.

[0009] After searching, there is no prior art related to the automated vehicle body delivery method; the prior art closest to the present invention is the Chinese utility model patent with application number CN201720341053.9, application date April 1, 2017, and name “vehicle body transfer device”, which discloses the following technical features:

[0010] 1. A vehicle body transporting device, comprising a transport frame and a front vehicle body supporting and positioning mechanism and a rear vehicle body supporting and positioning mechanism provided on the transport frame, wherein the front vehicle body supporting and positioning mechanism comprises a front transverse adjustment structure and a front longitudinal adjustment structure, and the rear vehicle body supporting and positioning mechanism comprises a rear transverse adjustment structure;

[0011] 2. The transfer rack is a frame structure;

[0012] 3. The front longitudinal adjustment structure is arranged on the transfer frame, the front transverse adjustment structure is arranged on the front longitudinal adjustment structure, and the front transverse adjustment structure is provided with a front support sleeve which can be adjusted up and down;

[0013] 4. The rear lateral adjustment structure is provided with a rear support sleeve that can be adjusted up and down;

[0014] 5. The front longitudinal adjustment structure includes a longitudinal rod and a mounting plate arranged at the lower part of the front transverse adjustment structure, the mounting plate is provided with fixing holes, and the longitudinal rod is provided with a group of adjustment holes that can cooperate with the fixing holes;

[0015] 6. The front lateral adjustment structure includes a crossbar and a front support frame, a fixing hole is provided at the lower part of the front support frame, and a group of adjustment holes that can cooperate with the fixing holes are provided on the crossbar;

[0016] 7. A front support frame is provided on the front lateral adjustment structure, a front support rod is provided on the front support frame, a group of positioning holes is provided on the front support rod, and a group of adjustment holes that can match the positioning holes are provided on the front support sleeve;

[0017] 8. The rear lateral adjustment structure includes a crossbar and a rear support frame. A mounting plate is provided at the lower part of the rear support frame. The mounting plate is provided with fixing holes. The crossbar is provided with a group of adjustment holes that can cooperate with the fixing holes.

[0018] 9. A rear support rod is arranged on the rear support frame, a group of positioning holes is arranged on the rear support sleeve, and a group of adjustment holes which can match with the positioning holes are arranged on the rear support sleeve.

[0019] Obviously, the focus of the prior art is to provide a structure of a vehicle body transfer device, especially the front and rear supports on the transfer frame can be adjusted horizontally and vertically, which can meet the positioning and transfer of different vehicle body types. However, the prior art still does not optimize the delivery process from the perspective of workflow.

[0020] Furthermore, the existing manual delivery mode has the following defects:

[0021] 1. Due to the uneven time and speed of the Kanban car receiving the car, it is very easy for the delivery personnel's working time to have a large span and large fluctuations, which can easily cause the delivery personnel's work saturation to be uneven, affecting the balanced distribution of the staff's work saturation;

[0022] 2. Manual lifting is difficult and prone to various quality defects. The hook needs to avoid the roof, which can easily lead to negligent operation errors. Inadvertent operation can easily lead to problems including but not limited to side roof pits and broken marker lights. Repeated lifting can cause damage to the curtain rails.

[0023] 3. Since it is difficult to ensure the accuracy of manual placement of finished car bodies, an accident is very likely to occur, that is, when placing the car body on the skid of the kanban car, manual judgment of the placement position is likely to cause the horn and preheating oil pipe to be crushed;

[0024] 4. The skids in the kanban truck need to be manually switched according to the vehicle information, and the support position and support height need to be adjusted. Manual switching is time-consuming, laborious and prone to errors. Therefore, manual work in this dimension is not only inefficient, but also prone to errors and accidents.

[0025] 5. After adding new models, the kanban car needs to add corresponding support points, which means that the kanban car needs to be modified in large numbers, which has a great impact and is extremely inconvenient;

[0026] 6. Due to the different lengths of finished car bodies of different models, the center of gravity of the structure deviates slightly from front to back. Therefore, when the finished car body is manually lifted by hanging the door frame, it will cause the finished car body to tilt backward, which in turn increases the probability of safety accidents.

[0027] 7. When the production line rhythm is raised to a certain level, the speed of manual delivery becomes a process bottleneck, resulting in the slow speed of manual delivery and the inability to meet the production line's production delivery needs. Summary of the invention

[0028] In view of the above problems, the present invention provides an automatic delivery system and method for commercial vehicle bodies, with the purpose of reducing labor costs and effectively improving the degree of automation in a workshop; avoiding damage to the finished vehicle body itself when lifting the door frame of the finished vehicle body, and at the same time eliminating the problem of inaccurate placement of the finished vehicle body; modifying the kanban car skid into a straight roller bed form, directly connecting the skid and the finished vehicle body, without the need for manual operation, and completing the overall delivery operation automatically; ensuring that the kanban car roller bed and the triple lift can be smoothly docked, avoiding the skid and the vehicle body from failing to smoothly enter the kanban car roller bed due to the central axes of the two roller beds not coinciding; the rear part of the modified kanban car is similar to carrying multiple straight roller beds, and the finished vehicle body and the skid can directly enter the kanban car through the roller beds to complete the automatic delivery of the vehicle body; it can effectively reduce labor costs, improve the overall automation rate of the workshop, and reduce quality problems caused by component damage due to manual lifting.

[0029] To solve the above problems, the technical solution provided by the present invention is:

[0030] An automatic delivery system for commercial vehicle bodies, including a kanban car and a kanban car parking centering assistance system; wherein:

[0031] The kanban car is a two-way powered straight roller bed structure, including a two-way powered straight roller bed; the two-way powered straight roller bed is docked with the roller bed in the triple lift for delivery during the handover;

[0032] The kanban car parking centering assistance system is used to assist in maintaining the parking positioning accuracy of the kanban car and ensure that the kanban car is accurately parked in the center position.

[0033] Preferably, the bidirectional powered straight roller bed is arranged at the center of the carriage of the kanban car; anti-runout safety devices are provided at both ends of the bidirectional powered straight roller bed; and a clamping mechanism is also provided on the bidirectional powered straight roller bed.

[0034] Preferably, the parking centering auxiliary system for the billboard truck comprises an anti-collision wall, a limit mechanism, and a drag correction belt; wherein:

[0035] The anti-collision wall is arranged at the rear of the parking space for the trolley; the parking space for the trolley is on the first floor, close to the delivery entrance;

[0036] The limiting mechanism is arranged on the left and right sides of the parking space for the billboard vehicle;

[0037] The drag correction belt is arranged at the bottom of the parking space for the billboard vehicle.

[0038] Preferably, the limiting mechanism comprises a front wheel limiting mechanism and a rear wheel limiting mechanism.

[0039] Preferably, the drag correction belt comprises a front wheel drag correction belt and a rear wheel drag correction belt.

[0040] A method for automatically delivering a commercial vehicle body of an automatic delivery system for a commercial vehicle body comprises the following steps:

[0041] S100. The unloaded kanban car enters the kanban car parking space, and then prepares to access the finished car body;

[0042] S200. Calibrate the parking accuracy of the kanban car;

[0043] S300. The finished car body is transported from the interior of the finished product conveying area until it is transported to the delivery port;

[0044] S400. The finished car body is lowered from the 2nd floor to the 1st floor by the triple lift, and is on the same floor as the kanban car;

[0045] S500. Using the roller bed in the triple lift, push the skid and the finished car body together into the bidirectional power straight roller bed in the kanban car; each skid uniquely corresponds to and loads one finished car body;

[0046] S600. Repeat S100-500 until all the skids and the finished car bodies are pushed into the bidirectional powered straight roller bed in the kanban car; the delivery work is now completed.

[0047] Preferably, in S100, when the kanban car enters the kanban car parking space, the anti-collision wall is used to limit the distance between the parking space of the kanban car and the docked triple lift;

[0048] When the kanban vehicle enters the kanban vehicle parking space, the limit mechanism is used to limit the deviation of the left and right sides of the kanban vehicle when it stops.

[0049] Preferably, S200 specifically includes the following steps:

[0050] S210. The parking accuracy of the front wheels of the kanban car is corrected by dragging the correction belt with the front wheels, and the parking accuracy of the rear wheels of the kanban car is corrected by dragging the correction belt with the rear wheels at the same time, until the kanban car is parked, and the central axis of the bidirectional power straight roller bed in the kanban car coincides with the central axis of the roller bed in the triple lift;

[0051] S220. The kanban car transports the empty skid body to the empty skid return line inside the finished product conveying area in the workshop through the triple lift; the empty skid return line is on the 2nd floor;

[0052] S230. The kanban vehicle enters a waiting mode, ready to receive the finished vehicle body at any time.

[0053] Preferably, S220 specifically includes the following steps:

[0054] S221. In the finished product conveying area, the empty skid is accessed by the triple lift from the kanban car on the first floor;

[0055] S222. The triple lift is raised to the 2nd floor, and then the empty skid is sent into the empty skid return line;

[0056] S223. The triple lift is ready to access the finished car body at any time.

[0057] Preferably, S500 specifically includes the following steps:

[0058] S510. The skid and the finished car body are transported to the delivery port on the second floor of the workshop through a roller bed and a moving machine in sequence;

[0059] S520. Push the skid and the finished car body carried by the skid into the triple lift by means of a moving machine; one triple lift can load up to three finished car bodies at a time and the skid for carrying the corresponding finished car body under each finished car body;

[0060] S530. The triple lift brings the finished car body and the skid under the finished car body for carrying the corresponding finished car body down from the second floor to the first floor;

[0061] S540. Use the roller bed in the triple lift to push the skid body and the finished car body together into the bidirectional powered straight roller bed in the kanban car.

[0062] Compared with the prior art, the present invention has the following advantages:

[0063] 1. Compared with the existing manual operation method, the delivery method of the present invention does not need to switch the support points in the kanban car, thereby reducing labor costs and effectively improving the degree of automation in the workshop;

[0064] 2. Since the present invention does not need to switch the supporting points in the kanban car, it avoids the damage to the finished car body itself when lifting the door frame of the finished car body, and at the same time eliminates the problem of inaccurate placement of the finished car body;

[0065] 3. Due to the structural modification of the kanban car, the existing technology uses the kanban car as a skid support to carry the finished car body, and the skid support needs to be manually switched when receiving the car, which is time-consuming and labor-intensive. In comparison, the present invention modifies the kanban car skid into a straight roller bed, directly connecting the skid and the finished car body, without manual operation, and the overall delivery operation is completed automatically;

[0066] 4. The parking centering auxiliary system of the present invention improves the front and rear and left and right side accuracy when the kanban car enters the parking space and stops, thereby ensuring that the kanban car roller bed and the triple lift can be smoothly docked, and avoiding the misalignment of the central axes of the two parts of the roller bed, and the inability of the skid body and the car body to smoothly enter the kanban car roller bed;

[0067] 5. Since the kanban carts in the prior art all carry the finished car bodies through supporting points, it is not convenient to implement the subsequent automatic delivery plan of the car bodies; in comparison, the rear part of the kanban cart modified by the present invention is similar to carrying multiple straight-moving roller beds, and the finished car bodies and the skid bodies can directly enter the kanban cart through the roller beds to complete the automatic delivery of the car bodies;

[0068] 6. Since the method of the present invention does not require human intervention throughout the entire process and the delivery operation is completed automatically, the adoption of the present invention can effectively reduce labor costs, improve the overall automation rate of the workshop, and reduce quality problems caused by component damage due to manual lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 It is a schematic top view of the layout of the automatic delivery port of a specific embodiment of the present invention;

[0070] Figure 2a A schematic top view of a kanban vehicle according to a specific embodiment of the present invention;

[0071] Figure 2b A schematic top view of a prior art kanban car;

[0072] Figure 3a It is a top view schematic diagram of a parking centering assistance system for a kanban vehicle according to a specific embodiment of the present invention;

[0073] Figure 3b It is a right side schematic diagram of a parking centering auxiliary system for a kanban vehicle according to a specific embodiment of the present invention;

[0074] Figure 4 The figure is a flow chart of a method for automatically delivering a commercial vehicle body according to a specific embodiment of the present invention.

[0075] Among them: 1. Kanban car, 2. Two-way powered straight roller bed, 3. Triple lift, 4. Anti-collision wall, 5. Delivery port, 6. Finished car body, 7. Front wheel limiting mechanism, 8. Rear wheel limiting mechanism, 9. Front wheel drag correction belt, 10. Rear wheel drag correction belt, 11. Adjustable support point. DETAILED DESCRIPTION

[0076] The present invention is further explained below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0077] like Figure 1 As shown, an automatic delivery system for commercial vehicle bodies includes a kanban car 1 and a kanban car parking centering auxiliary system; wherein:

[0078] like Figure 2a As shown, the kanban vehicle 1 of the present invention is a bidirectional powered straight roller bed 2 structure, including a bidirectional powered straight roller bed 2; the bidirectional powered straight roller bed 2 is docked with the roller bed in the triple lift 3 used for delivery during delivery.

[0079] In this specific embodiment, the bidirectional powered straight roller bed 2 is arranged in the center of the carriage of the kanban car 1; anti-runout safety devices are provided at both ends of the bidirectional powered straight roller bed 2; and a clamping mechanism is also provided on the bidirectional powered straight roller bed 2.

[0080] It should be noted that if Figure 2bAs shown, the difference between the kanban cart 1 of the present invention and the kanban cart 1 of the prior art is that the kanban cart 1 of the present invention adopts the above-mentioned bidirectional powered straight roller bed 2; the kanban cart 1 of the prior art adopts the adjustable support point 11 which is one of the core invention points of the present invention; the bidirectional powered straight roller bed 2 can very accurately adjust the position of the finished car body 6 in the kanban cart 1; since a kanban cart 1 can load up to 3 finished car bodies 6 at a time, if the prior art is adopted, a lot of manual adjustment work is required, which greatly affects the efficiency of logistics transportation and easily forms a process bottleneck in the process of loading the finished car body 6 on the kanban cart 1; and the bidirectional powered straight roller bed 2 used in the present invention can automatically adjust the position of the finished car body 6 in the kanban cart 1, which solves the above-mentioned problem very well.

[0081] On the other hand, the bidirectional powered straight roller bed 2 in the kanban car 1 can be smoothly docked with the roller bed in the triple lift 3 for delivery, and the finished car body 6 is directly transported from the roller bed into the kanban car 1 along with the skid body to complete the delivery.

[0082] It should be further explained that the bidirectional powered straight roller bed 2 is arranged in the center of the carriage, and its purpose is to ensure smooth docking between the kanban car 1 and the roller bed.

[0083] The kanban car parking centering assistance system is used to assist in maintaining the parking positioning accuracy of the kanban car 1 and ensure that the kanban car 1 is accurately parked in the center position.

[0084] It should be further explained that both ends of the bidirectional powered straight roller bed 2 are provided with anti-burst safety devices, the purpose of which is to ensure that the pry body does not fall off in the roller bed of the kanban car 1.

[0085] It should be further explained that a clamping mechanism is provided on the bidirectional powered linear roller bed 2 , the purpose of which is to ensure stability when conveying the finished car body 6 .

[0086] In this specific embodiment, the parking centering auxiliary system for the billboard vehicle includes an anti-collision wall 4, a limit mechanism, and a drag correction belt; wherein:

[0087] like Figure 3a As shown, the anti-collision wall 4 is arranged at the rear of the trolley parking space; the trolley parking space is on the first floor, close to the delivery entrance 5.

[0088] It should be noted that a crash barrier 4 is provided at the rear of the trolley parking space, the purpose of which is to prevent the trolley 1 from being damaged by collision with other equipment when the trolley 1 reverses for a long distance.

[0089] The limiting mechanism is arranged on the left and right sides of the parking space for the trolley.

[0090] like Figure 3b As shown, in this specific embodiment, the limiting mechanism includes a front wheel limiting mechanism 7 and a rear wheel limiting mechanism 8.

[0091] The drag correction belt is installed at the bottom of the parking space for the trolley.

[0092] It should be noted that a drag correction belt is provided at the bottom of the kanban car parking space, the purpose of which is to ensure that after the kanban car 1 is parked, the central axis of its bidirectional powered straight roller bed 2 coincides with the central axis of the roller bed equipment in the docked triple lift 3.

[0093] In this specific embodiment, the drag correction belt includes a front wheel drag correction belt 9 and a rear wheel drag correction belt 10, which correspond to the front wheel and the rear wheel of the pallet truck 1 respectively.

[0094] like Figure 4 As shown, a method for automatically delivering a commercial vehicle body of an automatic delivery system for a commercial vehicle body comprises the following steps:

[0095] S100: Move the empty kanban car 1 into the kanban car parking space, and then prepare for receiving the finished car body 6.

[0096] It should be noted that S100 is the initial state of the delivery system. Only when the kanban car 1 enters the kanban car parking space can the subsequent operation process be carried out, otherwise there will be safety hazards.

[0097] In this specific embodiment, in S100, when the kanban cart 1 enters the kanban cart parking space, the anti-collision wall 4 limits the distance between the stopping position of the kanban cart 1 and the docking triple lift 3.

[0098] When the kanban cart 1 enters the kanban cart parking space, the limit mechanism is used to limit the deviation of the left and right sides of the kanban cart 1 when it stops.

[0099] In this specific embodiment, at the intersection 5, the kanban cart 1 reverses into the kanban cart parking space.

[0100] S200. Calibrate the parking accuracy of the kanban car 1.

[0101] It should be noted that the S200 completes fixed-point parking through the kanban car parking centering assistance system.

[0102] It should be further explained that the main task of S200 is to complete the left and right precision adjustment.

[0103] In this specific embodiment, S200 specifically includes the following steps:

[0104] S210. The parking accuracy of the front wheels of the pallet cart 1 is corrected by dragging the correction belt 9 with the front wheels, and the parking accuracy of the rear wheels of the pallet cart 1 is corrected by dragging the correction belt 10 with the rear wheels at the same time, until the pallet cart 1 completes parking, and the central axis of the bidirectional powered straight roller bed 2 in the pallet cart 1 coincides with the central axis of the roller bed in the triple lift 3.

[0105] S220. The kanban car 1 transports the empty skid body to the empty skid return line inside the finished product conveying area in the workshop through the triple lift 3; the empty skid return line is on the second floor.

[0106] In this specific embodiment, S220 specifically includes the following steps:

[0107] S221. In the finished product conveying area, the triple lift 3 receives the empty skid from the kanban cart 1 on the first floor.

[0108] S222. The triple lift 3 rises to the 2nd floor, and then sends the empty skid into the empty skid return line.

[0109] S223. The triple lift 3 is ready to receive the finished car body 6 at any time.

[0110] S230. The kanban car 1 enters a waiting mode, ready to receive the finished car body 6 at any time.

[0111] S300. The finished car body 6 is transported from the interior of the finished product conveying area until it is transported to the delivery port 5.

[0112] S400. The finished car body 6 is lowered from the 2nd floor to the 1st floor through the triple lift 3, to the same floor as the kanban car 1.

[0113] S500. Use the roller bed in the triple lift 3 to push the skid and the finished car body 6 together into the two-way powered straight roller bed 2 in the kanban car 1; each skid uniquely corresponds to and loads a finished car body 6.

[0114] In this specific embodiment, S500 specifically includes the following steps:

[0115] S510. The skid body and the finished car body 6 carried by it are transported to the delivery port 5 on the second floor of the workshop through a roller bed and a transfer machine in sequence.

[0116] S520. Push the skid and the finished car body 6 carried by the skid into the triple lift 3 through a moving machine; one triple lift 3 can load up to three finished car bodies 6 at a time and a skid for carrying the corresponding finished car body 6 under each finished car body 6.

[0117] S530. The triple lift 3 is lowered from the second floor to the first floor, carrying the finished car body 6 and the skid under the finished car body 6 for carrying the corresponding finished car body 6.

[0118] S540. Use the roller bed in the triple lift 3 to push the skid body and the finished car body 6 together into the bidirectional powered straight roller bed 2 in the kanban car 1.

[0119] It should be noted that, since one triple lift 3 can load at most three finished car bodies 6 and a skid for carrying the corresponding finished car body 6 under each finished car body 6 at a time, when the finished car body 6 is transported to the delivery port 5 via a roller bed on the second floor of the workshop, at most three finished car bodies 6 and a skid for carrying the corresponding finished car body 6 under each finished car body 6 are sequentially loaded into the triple lift 3 through a transfer machine according to the needs of the actual production plan.

[0120] In simple terms, one triple lift 3 can send out three finished car bodies 6 at a time; and each triple lift 3 is connected to a kanban car 1; and each kanban car 1 can also receive three finished car bodies 6 at a time.

[0121] like Figure 1 As shown, in this specific embodiment, there are two delivery transmission lines working at the same time, so in the same unit time, at most the transmission demand of 6 finished car bodies 6 can be met; if the existing technology is used, a process bottleneck will occur at the kanban car 1, resulting in a traffic jam of the transmission target. The present invention solves this problem very well.

[0122] S600. Repeat S100 to S500 until all the skids and finished car bodies 6 are pushed into the bidirectional powered straight roller bed 2 in the kanban car 1; the delivery work is now completed.

[0123] The principle of the present invention is that the kanban car 1 cooperates with the triple lift 3 for outbound delivery to complete the automatic delivery of the finished car body 6, thereby freeing the entire delivery workflow from the existing manual operation mode in the industry and realizing fully automated operation.

[0124] Furthermore, due to the adoption of the present invention, the entire delivery process does not require human intervention, thereby eliminating all problems that may be caused by humans, including but not limited to:

[0125] First, the time and speed of the Kanban truck receiving the vehicle are all arranged by the system, without the involvement of the delivery personnel, so there is no problem of uneven work saturation of the delivery personnel;

[0126] Secondly, since manual lifting is not required, operational errors will not exist. The above-mentioned side roof pits, broken position lights, and curtain rail damage caused by repeated lifting will all be solved;

[0127] Secondly, since the present invention directly eliminates the hoisting link and adopts roller bed for accurate positioning and transmission, the placement accuracy is unattainable by manual hoisting. The computer is accurate and can ensure the uniformity of placement accuracy. The horn and preheating oil pipe will not be crushed when the skid of the trolley is dropped.

[0128] Secondly, since the entire process is automated and no manual switching is required, efficiency is greatly improved, and the probability of accidents caused by human operating errors is reduced to a minimum;

[0129] Secondly, for adding new models, the bidirectional power straight roller bed structure of the kanban car of the present invention can be used in all cases without adding corresponding support points, and there is no need for a large number of modifications to the kanban car, which has basically no impact, is extremely convenient, and is easy to be used and promoted;

[0130] Secondly, for different models of finished vehicle bodies with different lengths and slight deviations in the front and rear center of gravity, the present invention will not cause the finished vehicle body to tilt backward when the door frame is manually hung to lift the finished vehicle body, thereby reducing the probability of safety accidents.

[0131] Finally, when the production line rhythm is increased to a certain level, the speed of manual delivery becomes a process bottleneck, and only the system and method of the present invention can keep up with the production line production delivery requirements.

[0132] Furthermore, the finished car body 6 in the finished product conveying area is located on the 2nd floor of the workshop, while the kanban car 1 is parked on the 1st floor of the workshop, so it needs to rely on the roller bed in the triple lift 3 to directly connect with the kanban car 1. Specifically: the skid body and the finished car body 6 are transported to the triple lift 3 for outbound delivery in the finished product conveying area, and then the finished car body 6 is lowered from the 2nd floor to the 1st floor by the triple lift 3; after the triple lift 3 is lowered to the 1st floor, the roller bed equipment therein is connected with the two-way power straight roller bed 2 in the kanban car 1, and the skid body and the finished car body 6 are sent to the kanban car 1 together to complete the outbound delivery work.

[0133] In the above detailed description, various features are grouped together in a single embodiment to simplify the disclosure. This method of disclosure should not be interpreted as reflecting an intention that the embodiments of the claimed subject matter require more features than are clearly stated in each claim. On the contrary, as reflected in the appended claims, the invention is in a state of having less than all the features of the disclosed individual embodiments. Therefore, the appended claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.

[0134] The disclosed embodiments are described above to enable any person skilled in the art to implement or use the present invention. Various modifications of these embodiments are obvious to those skilled in the art, and the general principles defined herein may also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.

[0135] The above description includes examples of one or more embodiments. Of course, it is not possible to describe all possible combinations of components or methods for the purpose of describing the above embodiments, but it should be recognized by those skilled in the art that the various embodiments may be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications and variations that fall within the scope of protection of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the word is covered in a manner similar to the term "including", just as "including," is explained as a transitional word in the claims. In addition, any term "or" used in the specification of the claims is intended to mean "non-exclusive or".

[0136] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An automatic delivery system for commercial vehicle bodies, characterized in that: It comprises a kanban car (1) and a kanban car parking centering assistance system; wherein: The kanban car (1) is a bidirectional powered straight roller bed structure, comprising a bidirectional powered straight roller bed (2); the bidirectional powered straight roller bed (2) is docked with the roller bed in the triple lift (3) used for delivery during the handover; The kanban car parking centering assistance system is used to assist in maintaining the parking positioning accuracy of the kanban car (1) and ensure that the kanban car (1) is accurately parked in the center position; The bidirectional powered straight roller bed (2) is arranged at the center of the carriage of the kanban car (1); anti-runaway safety devices are arranged at both ends of the bidirectional powered straight roller bed (2); and a clamping mechanism is also arranged on the bidirectional powered straight roller bed (2); The parking centering auxiliary system for a kanban vehicle comprises an anti-collision wall (4), a limiting mechanism, and a drag correction belt; wherein: The anti-collision wall (4) is arranged at the rear of the parking space for the trolley; the parking space for the trolley is on the first floor, close to the delivery entrance (5); The limiting mechanism is arranged on the left and right sides of the parking space for the billboard vehicle; The drag correction belt is arranged at the bottom of the parking space for the billboard vehicle.

2. The automatic delivery system for commercial vehicle bodies according to claim 1, characterized in that: The limiting mechanism comprises a front wheel limiting mechanism (7) and a rear wheel limiting mechanism (8).

3. The automatic delivery system for commercial vehicle bodies according to claim 2, characterized in that: The drag correction belt comprises a front wheel drag correction belt (9) and a rear wheel drag correction belt (10).

4. A method for automatically delivering a commercial vehicle body using the automatic delivery system for a commercial vehicle body according to claim 3, characterized in that: The following steps are involved: S100. The unloaded kanban car (1) enters the kanban car parking space, and then prepares for access to the finished car body (6); S200. Calibrate the parking accuracy of the kanban car (1); S300. The finished car body (6) is transported from the interior of the finished product conveying area until it is transported to the delivery port (5); S400. The finished car body (6) is lowered from the 2nd floor to the 1st floor by the triple lift (3), and is placed on the same floor as the kanban car (1); S500. Using the roller bed in the triple lift (3), push the skid and the finished car body (6) together into the bidirectional powered straight roller bed (2) in the kanban car (1); each skid uniquely corresponds to and carries one finished car body (6); S600. Repeat S100 to S500 until all the pry bodies and the finished car bodies (6) are pushed into the bidirectional powered straight roller bed (2) in the kanban car (1); the delivery work is now completed.

5. The method for automatic delivery of commercial vehicle bodies according to claim 4, characterized in that: In S100, when the kanban car (1) enters the kanban car parking space, the anti-collision wall (4) limits the distance between the stop position of the kanban car (1) and the docked triple lift (3); When the kanban vehicle (1) enters the kanban vehicle parking space, the limit mechanism is used to limit the deviation of the left and right sides of the kanban vehicle (1) when it stops.

6. The method for automatic delivery of commercial vehicle bodies according to claim 5, characterized in that: S200 specifically includes the following steps: S210. The parking accuracy of the front wheels of the kanban car (1) is corrected by dragging the correction belt (9) with the front wheels, and the parking accuracy of the rear wheels of the kanban car (1) is corrected by dragging the correction belt (10) with the rear wheels, until the kanban car (1) is parked and the central axis of the bidirectional powered straight roller bed (2) in the kanban car (1) coincides with the central axis of the roller bed in the triple lift (3); S220. The kanban car (1) transports the empty skid body to the empty skid return line inside the finished product conveying area in the workshop through the triple lift (3); the empty skid return line is on the second floor; S230. The kanban vehicle (1) enters a waiting mode, ready to receive the finished vehicle body (6) at any time.

7. The method for automatically delivering a commercial vehicle body according to claim 6, characterized in that: S220 specifically includes the following steps: S221. In the finished product conveying area, the triple lift (3) accesses the empty skid from the kanban car (1) on the first floor; S222. The triple lift (3) is raised to the second floor, and then the empty skid is sent into the empty skid return line; S223. The triple lift (3) is ready to receive the finished vehicle body (6) at any time.

8. The method for automatically delivering a commercial vehicle body according to claim 7, characterized in that: S500 specifically includes the following steps: S510. The skid body and the finished car body (6) carried thereon are transported to the delivery port (5) on the second floor of the workshop through a roller bed and a moving machine in sequence; S520. Push the skid and the finished car body (6) carried by the skid into the triple lift (3) by means of a moving machine; one triple lift (3) can load at most three finished car bodies (6) and the skid for carrying the corresponding finished car body (6) under each finished car body (6); S530. The triple lift (3) carries the finished car body (6) and the skid under the finished car body (6) for carrying the corresponding finished car body (6) and descends from the second floor to the first floor; S540. Using the roller bed in the triple lift (3), push the skid body and the finished vehicle body (6) together into the bidirectional powered straight roller bed (2) in the kanban car (1).

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