A fully automatic frame chassis flipping system and method

Abstract

The present invention relates to the technical field of vehicle manufacturing, and specifically discloses a full-automatic overturning system and method for a vehicle frame chassis, including a vehicle frame conveying mechanism, a hoisting track, a head-end hoisting mechanism, a tail-end hoisting mechanism, a first position sensor, a second position sensor, and a speed detection device. The first position sensor is used to detect whether the vehicle frame chassis reaches a first preset position, the second position sensor is used to detect whether the vehicle frame chassis reaches a second preset position, and the speed detection device is used to detect the traveling speed of the vehicle frame chassis, so as to control the traveling and lifting of the head-end hoisting mechanism and the tail-end hoisting mechanism to achieve automatic banding. By applying the full-automatic overturning system and method for the vehicle frame chassis provided by the present invention, the accompanying automatic banding of the vehicle frame chassis can be realized without manual operation, thus liberating manpower and accelerating the production rhythm. In addition, the safety hazards caused by manual operation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and more specifically, to a full-automatic flipping system and method for a vehicle frame chassis. Background Art

[0002] With the continuous development of automation in the vehicle industry in China, the automation of the truck frame flipping station has gradually entered the general assembly workshop. The frame flipping mainly uses a vision device to judge the position of the frame and the sling, and at the same time, the vision device measures the width of the frame to obtain the flipping value to determine the flipping angle of the frame. In the traditional frame flipping, it is necessary for workers to put the sling on the frame manually, and then the sling drives the frame to flip. However, the manual bagging affects the production rhythm, and the bagging operation is time-consuming and laborious.

[0003] In summary, how to effectively solve the problems such as time-consuming and laborious manual bagging during frame flipping is an issue that needs to be solved by those skilled in the art currently. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a full-automatic flipping system and method for a vehicle frame chassis, which can effectively solve the problem of time-consuming and laborious manual bagging during frame flipping.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] A full-automatic flipping system for a vehicle frame chassis, comprising:

[0007] A frame conveying mechanism for supporting and driving the movement of the vehicle frame chassis;

[0008] A hoisting track provided above the frame conveying mechanism;

[0009] A head-end lifting mechanism and a tail-end lifting mechanism, which are respectively provided above the frame conveying mechanism and can move along the hoisting track. The bottom end of the head-end lifting mechanism is connected with a head-end sling, and the head-end sling can be lifted and lowered under the drive of the head-end lifting mechanism. The bottom end of the tail-end lifting mechanism is connected with a tail-end sling, and the tail-end sling can be lifted and lowered under the drive of the tail-end lifting mechanism;

[0010] A first position sensor and a second position sensor are arranged at intervals along the moving direction of the frame conveying mechanism. The first position sensor is used to detect whether the vehicle frame chassis reaches a first preset position, and the second position sensor is used to detect whether the vehicle frame chassis reaches a second preset position;

[0011] A speed detection device for detecting the traveling speed of the vehicle frame chassis.

[0012] Optionally, in the above-mentioned fully automatic frame chassis flipping system, a vision mechanism is further included, which is arranged on one side of the frame conveying mechanism. The vision mechanism includes:

[0013] A head-end vision camera, which is arranged on the side of the second position sensor away from the first position sensor;

[0014] A tail-end vision camera, which is arranged on the side of the first position sensor away from the second position sensor;

[0015] A head-end driving device, the output end of the head-end driving device is connected to the head-end vision camera to drive the head-end vision camera to move along the moving direction of the frame conveying mechanism;

[0016] A tail-end driving device, the output end of the tail-end driving device is connected to the tail-end vision camera to drive the tail-end vision camera to move along the moving direction of the frame conveying mechanism.

[0017] Optionally, in the above-mentioned fully automatic frame chassis flipping system, the head-end driving device includes a head-end linear guide rail, a head-end motor and a head-end bracket. The head-end bracket is slidably connected to the head-end linear guide rail. The head-end vision camera is fixed to the head-end bracket. The output end of the head-end motor is connected to the head-end bracket to drive the head-end bracket to move along the head-end linear guide rail;

[0018] The tail-end driving device includes a tail-end linear guide rail, a tail-end motor and a tail-end bracket. The tail-end bracket is slidably connected to the tail-end linear guide rail. The tail-end vision camera is fixed to the tail-end bracket. The output end of the tail-end motor is connected to the tail-end bracket to drive the tail-end bracket to move along the tail-end linear guide rail.

[0019] Optionally, in the above-mentioned fully automatic frame chassis flipping system, the first position sensor and the second position sensor are respectively a first photoelectric sensor and a second photoelectric sensor. The transmitter and receiver of the first photoelectric sensor are respectively located at both ends of the frame conveying mechanism, and the transmitter and receiver of the second photoelectric sensor are respectively located at both ends of the frame conveying mechanism.

[0020] Optionally, in the above-mentioned fully automatic frame chassis flipping system, the speed detection device includes an encoder connected to the drive shaft of the frame conveying mechanism.

[0021] Optionally, in the above-mentioned fully automatic frame chassis flipping system, the speed detection device further includes a synchronous belt and two synchronous wheels. The two synchronous wheels are respectively connected to the drive shaft of the frame conveying mechanism and the encoder, and the synchronous belt is sleeved outside the two synchronous wheels.

[0022] The fully automatic chassis flipping system for a vehicle frame provided by the present invention includes a vehicle frame conveying mechanism, a hoisting track, a head-end hoisting mechanism, a tail-end hoisting mechanism, a first position sensor, a second position sensor, and a speed detection device. Among them, the vehicle frame conveying mechanism is used to support and drive the movement of the vehicle frame chassis; the hoisting track is arranged above the vehicle frame conveying mechanism; the head-end hoisting mechanism and the tail-end hoisting mechanism are respectively arranged above the vehicle frame conveying mechanism and can travel along the hoisting track. A head-end sling is connected to the bottom end of the head-end hoisting mechanism, and the head-end sling can be lifted and lowered under the drive of the head-end hoisting mechanism. A tail-end sling is connected to the bottom end of the tail-end hoisting mechanism, and the tail-end sling can be lifted and lowered under the drive of the tail-end hoisting mechanism; the first position sensor and the second position sensor are arranged at intervals along the moving direction of the vehicle frame conveying mechanism. The first position sensor is used to detect whether the vehicle frame chassis reaches the first preset position, and the second position sensor is used to detect whether the vehicle frame chassis reaches the second preset position; the speed detection device is used to detect the traveling speed of the vehicle frame chassis.

[0023] When applying the fully automatic chassis flipping system for a vehicle frame provided by the present invention, the vehicle frame chassis travels with the vehicle frame conveying mechanism, and the speed detection device detects the traveling speed of the vehicle frame chassis; as the vehicle frame chassis travels, when the first position sensor detects that the vehicle frame chassis travels to the first preset position with the vehicle frame conveying mechanism, the head-end hoisting mechanism drives the head-end sling to descend to the belt-passing height, and after a preset delay time when the head-end hoisting mechanism drives the head-end sling to descend, the tail-end hoisting mechanism drives the tail-end sling to descend to the belt-passing height; as the vehicle frame chassis travels, when the second position sensor detects that the vehicle frame chassis travels to the second preset position with the vehicle frame conveying mechanism, the vehicle frame chassis travels to pass through the head-end sling, and the head-end sling corresponds to the head-end point of the vehicle frame chassis; the tail-end hoisting mechanism accelerates first and then decelerates to the accompanying speed along the hoisting track so that the tail-end sling passes through the vehicle frame chassis and corresponds to the tail-end point of the vehicle frame chassis; then, the head-end hoisting mechanism and the tail-end hoisting mechanism respectively drive the head-end sling and the tail-end sling to rise synchronously to hold the vehicle frame chassis, completing the belt-holding; the head-end hoisting mechanism and the tail-end hoisting mechanism then respectively drive the head-end sling and the tail-end sling to move synchronously to flip the vehicle frame chassis. In summary, the fully automatic chassis flipping system for a vehicle frame provided by the present application can realize the automatic belt-holding during the travel of the vehicle frame chassis without manual operation, thus liberating manpower and accelerating the production rhythm. In addition, it reduces the safety hazards caused by manual operation.

[0024] The present invention also provides the following technical solutions:

[0025] A fully automatic chassis flipping method for a vehicle frame, used for any of the above fully automatic chassis flipping systems for a vehicle frame, includes:

[0026] The vehicle frame chassis travels with the vehicle frame conveying mechanism, and the speed detection device detects the traveling speed of the vehicle frame chassis;

[0027] When the first position sensor detects that the chassis of the vehicle frame travels to the first preset position along with the vehicle frame conveying mechanism, the head-end lifting mechanism drives the head-end sling to descend to the belt-passing height;

[0028] After a preset delay time for the head-end lifting mechanism to drive the head-end sling to descend, the tail-end lifting mechanism drives the tail-end sling to descend to the belt-passing height;

[0029] When the second position sensor detects that the chassis of the vehicle frame travels to the second preset position along with the vehicle frame conveying mechanism, the chassis of the vehicle frame travels into and passes through the head-end sling, and the head-end point of the head-end sling corresponds to the head-end point of the chassis of the vehicle frame;

[0030] The tail-end lifting mechanism accelerates first and then decelerates along the lifting track to the following speed, so that the tail-end sling passes through the chassis of the vehicle frame and corresponds to the tail-end point of the chassis of the vehicle frame;

[0031] The head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to rise synchronously to wrap the chassis of the vehicle frame, completing the belt wrapping;

[0032] The head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to move synchronously to turn over the chassis of the vehicle frame;

[0033] Wherein, the following speed is the same as the traveling speed of the chassis of the vehicle frame.

[0034] Optionally, in the above full-automatic turning-over method for the chassis of the vehicle frame, it further includes:

[0035] When the first position sensor detects that the chassis of the vehicle frame travels to the first preset position along with the vehicle frame conveying mechanism, the head-end driving device drives the head-end vision camera to increase its speed to the following speed;

[0036] When the second position sensor detects that the chassis of the vehicle frame travels to the second preset position along with the vehicle frame conveying mechanism, the tail-end driving device drives the tail-end vision camera to increase its speed to the following speed;

[0037] After completing the belt wrapping, it further includes:

[0038] The head-end vision camera and the tail-end vision camera respectively take pictures of the head-end point and the tail-end point. If both the head-end sling and the tail-end sling are successfully belt-wrapped, the head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to move synchronously to turn over the chassis of the vehicle frame. Otherwise, an alarm reminder is output and / or the vehicle frame conveying mechanism, the head-end lifting mechanism, and the tail-end lifting mechanism are controlled to stop.

[0039] Optionally, in the above full-automatic turning-over method for the chassis of the vehicle frame, it further includes:

[0040] When the head-end vision camera, the head-end sling, and the head-end position all correspond, the head-end vision camera takes a photo;

[0041] When the tail-end vision camera, the tail-end sling, and the tail-end position all correspond, the tail-end vision camera takes a photo.

[0042] Optionally, in the above full-automatic chassis frame flipping method, before the first position sensor detects that the chassis frame travels to the first preset position along with the chassis frame conveying mechanism, it further includes:

[0043] The head-end lifting mechanism and the tail-end lifting mechanism respectively travel along the lifting track to the head-end receiving position and the tail-end receiving position above the chassis frame conveying mechanism, and the distance between the head-end receiving position and the tail-end receiving position is not less than the body length of the chassis frame.

[0044] Applying the full-automatic chassis frame flipping method provided by the present invention can realize the automatic belt sleeving of the chassis frame during movement, without manual operation, thus liberating manpower and accelerating the production rhythm. In addition, it reduces the safety hazards caused by manual operation. Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0046] Figure 1 It is a top view working position schematic diagram of a full-automatic chassis frame flipping system according to a specific embodiment of the present invention;

[0047] Figure 2 For Figure 1 It is a structural schematic diagram of the first position sensor, the second position sensor, and the vision mechanism in

[0048] Figure 3 It is a cooperation schematic diagram of the head-end lifting mechanism and the tail-end lifting mechanism;

[0049] Figure 4 For Figure 1 It is a structural schematic diagram of the speed detection device in

[0050] Figure 5 It is a structural schematic diagram of the head-end hoist electric hoist.

[0051] The markings in the drawings are as follows:

[0052] Frame conveying mechanism 1, hoisting track 2, head-end lifting mechanism 31, tail-end lifting mechanism 32, head-end sling 311, flipping chain 312, roller chain drive motor 313, scissor lift device 314, lifting motor 315, traveling motor 316, tail-end sling 321, first position sensor 41, second position sensor 42, first laser beam 411, second laser beam 421, speed detection device 5, encoder 51, synchronous pulley 52, synchronous belt 53, pressure plate 54, vision mechanism 6, head-end vision camera 61, tail-end vision camera 62, head-end linear guide 631, head-end motor 632, head-end bracket 633, head-end track base 634, tail-end linear guide 641, tail-end motor 642, tail-end bracket 643, tail-end track base 644, frame chassis 7. Detailed implementation manners

[0053] An embodiment of the present invention discloses a full-automatic flipping system and method for a frame chassis to realize the automatic strap-on of the frame chassis during movement, liberate manpower, and accelerate the production rhythm.

[0054] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0055] Please refer to Figures 1-3 , Figure 1 which is a top view working position schematic diagram of the full-automatic flipping system for the frame chassis according to a specific embodiment of the present invention; Figure 2 is Figure 1 a structural schematic diagram of the first position sensor, the second position sensor, and the vision mechanism in Figure 3 and is a cooperation schematic diagram of the head-end lifting mechanism and the tail-end lifting mechanism.

[0056] In a specific embodiment, the full-automatic flipping system for the frame chassis provided by the present invention includes a frame conveying mechanism 1, a hoisting track 2, a head-end lifting mechanism 31, a tail-end lifting mechanism 32, a first position sensor 41, a second position sensor 42, and a speed detection device 5.

[0057] Among them, the vehicle frame conveying mechanism 1 is used to support and drive the movement of the vehicle frame chassis 7, and its specific structure can refer to the structure of the conventional production line in a factory. The hoisting track 2 is arranged above the vehicle frame conveying mechanism 1 and is used to provide support and guidance for the head-end hoisting mechanism 31 and the tail-end hoisting mechanism 32. Specifically, a truss track can be adopted. The head-end hoisting mechanism 31 and the tail-end hoisting mechanism 32 are respectively arranged above the vehicle frame conveying mechanism 1 and can travel along the hoisting track 2. The bottom end of the head-end hoisting mechanism 31 is connected with a head-end sling 311, and the head-end sling 311 can be lifted and lowered under the drive of the head-end hoisting mechanism 31. The bottom end of the tail-end hoisting mechanism 32 is connected with a tail-end sling 321, and the tail-end sling 321 can be lifted and lowered under the drive of the tail-end hoisting mechanism 32. The first position sensor 41 and the second position sensor 42 are arranged at intervals along the moving direction of the vehicle frame conveying mechanism 1. The first position sensor 41 is used to detect whether the vehicle frame chassis 7 reaches the first preset position, and the second position sensor 42 is used to detect whether the vehicle frame chassis 7 reaches the second preset position. The speed detection device 5 is used to detect the traveling speed of the vehicle frame chassis 7. Specifically, the traveling speed of the vehicle frame chassis 7 can be directly detected, or the speed of the vehicle frame conveying mechanism 1 can be detected to indirectly detect the traveling speed of the vehicle frame chassis 7.

[0058] When the vehicle frame chassis 7 is flipped by using the full-automatic flipping system for the vehicle frame chassis provided by the present invention, the vehicle frame chassis 7 travels with the vehicle frame conveying mechanism 1, and the speed detection device 5 detects the traveling speed of the vehicle frame chassis 7. As the vehicle frame chassis 7 travels, when the first position sensor 41 detects that the vehicle frame chassis 7 travels with the vehicle frame conveying mechanism 1 to the first preset position, the head-end hoisting mechanism 31 drives the head-end sling 311 to descend to the tape-passing height, and after a preset delay time when the head-end hoisting mechanism 31 drives the head-end sling 311 to descend, the tail-end hoisting mechanism 32 drives the tail-end sling 321 to descend to the tape-passing height. As the vehicle frame chassis 7 travels, when the second position sensor 42 detects that the vehicle frame chassis 7 travels with the vehicle frame conveying mechanism 1 to the second preset position, the vehicle frame chassis 7 travels to penetrate into the head-end sling 311, and the head-end sling 311 corresponds to the head-end point position of the vehicle frame chassis 7. The tail-end hoisting mechanism 32 first accelerates and then decelerates to the following speed along the hoisting track 2 so that the tail-end sling 321 penetrates into the vehicle frame chassis 7 and corresponds to the tail-end point position of the vehicle frame chassis 7. Then, the head-end hoisting mechanism 31 and the tail-end hoisting mechanism 32 respectively drive the head-end sling 311 and the tail-end sling 321 to rise synchronously to hold the vehicle frame chassis 7, completing the tape-holding; the head-end hoisting mechanism 31 and the tail-end hoisting mechanism 32 then respectively drive the head-end sling 311 and the tail-end sling 321 to move synchronously to flip the vehicle frame chassis 7.

[0059] In summary, the full-automatic flipping system for the vehicle frame chassis provided by the present application can realize the automatic tape-holding during the following movement of the vehicle frame chassis 7 without manual operation, thus liberating manpower and accelerating the production beat. In addition, the potential safety hazards caused by manual operation are reduced.

[0060] In one embodiment, please continue to refer to Figure 2 , the full-automatic frame chassis flipping system further includes a vision mechanism 6, which is arranged on one side of the frame conveying mechanism 1. The vision mechanism 6 includes a head-end vision camera 61, a tail-end vision camera 62, a head-end driving device and a tail-end driving device. Among them, the head-end vision camera 61 is arranged on the side of the second position sensor 42 away from the first position sensor 41; the tail-end vision camera 62 is arranged on the side of the first position sensor 41 away from the second position sensor 42; the head-end driving device, the output end of the head-end driving device is connected to the head-end vision camera 61 to drive the head-end vision camera 61 to move along the moving direction of the frame conveying mechanism 1; the tail-end driving device, the output end of the tail-end driving device is connected to the tail-end vision camera 62 to drive the tail-end vision camera 62 to move along the moving direction of the frame conveying mechanism 1. The head-end vision camera 61 is used to obtain the image information of the head end of the frame chassis 7 to detect whether the head-end sling 311 is sleeved on the head-end point of the frame chassis 7; the tail-end vision camera 62 is used to obtain the image information of the tail end of the frame chassis 7 to detect whether the tail-end sling 321 is sleeved on the tail-end point of the frame chassis 7, so as to avoid potential safety hazards caused by unsuccessful sleeving in abnormal working conditions and other situations. In addition, the head-end vision camera 61 can follow the frame chassis 7 under the drive of the head-end driving device, and the tail-end vision camera 62 can follow the frame chassis 7 under the drive of the tail-end driving device, so that detection can be carried out during the movement of the frame chassis 7, further accelerating the production beat.

[0061] In one embodiment, the head-end driving device includes a head-end linear guide rail 631, a head-end motor 632 and a head-end bracket 633. The head-end bracket 633 is slidably connected to the head-end linear guide rail 631. The head-end vision camera 61 is fixed to the head-end bracket 633. The output end of the head-end motor 632 is connected to the head-end bracket 633 to drive the head-end bracket 633 to move along the head-end linear guide rail 631. Through the setting of the head-end linear guide rail 631, the movement of the head-end motor 632 is limited and guided, making its movement more stable. The head-end motor 632 can specifically adopt a servo motor for easy control. In order to facilitate the installation of the head-end linear guide rail 631, a head-end track base 634 can be set.

[0062] In one embodiment, the tail-end driving device includes a tail-end linear guide rail 641, a tail-end motor 642, and a tail-end bracket 643. The tail-end bracket 643 is slidably connected to the tail-end linear guide rail 641. The tail-end vision camera 62 is fixed to the tail-end bracket 643. The output end of the tail-end motor 642 is connected to the tail-end bracket 643 to drive the tail-end bracket 643 to move along the tail-end linear guide rail 641. Through the arrangement of the tail-end linear guide rail 641, the movement of the tail-end motor 642 is limited and guided, making its movement smoother. The tail-end motor 642 can specifically adopt a servo motor for easy control. In order to facilitate the installation of the tail-end linear guide rail 641, a tail-end track base 644 can be provided. The vision mechanism 6 can specifically include a PLC control system and is electrically connected to the head-end motor 632 and the tail-end motor 642 to control the actions of the head-end motor 632 and the tail-end motor 642. In other embodiments, the head-end motor 632 and the tail-end motor 642 can also be controlled by the control system of the overall system.

[0063] In one embodiment, the first position sensor 41 and the second position sensor 42 are respectively a first photoelectric sensor and a second photoelectric sensor. The transmitter and the receiver of the first photoelectric sensor are respectively located at both ends of the vehicle frame conveying mechanism 1, and the transmitter and the receiver of the second photoelectric sensor are respectively located at both ends of the vehicle frame conveying mechanism 1. The transmitter emits signals such as laser or infrared light. Taking the emission of laser as an example, when the vehicle frame chassis 7 travels to the first position, the first laser beam 411 emitted by the transmitter of the first photoelectric sensor is blocked by the vehicle frame chassis 7, so that its receiver no longer receives the signal emitted by the transmitter, and thus it can be detected that the vehicle frame chassis 7 travels to the first position. The detection principle of the second photoelectric sensor is similar. By using photoelectric sensors, the traveling position of the vehicle frame chassis 7 can be accurately detected. In other embodiments, the first position sensor 41 and the second position sensor 42 can also adopt other types of position sensors in the prior art. In order to facilitate the installation of the transmitter and the receiver, installation brackets can be respectively provided corresponding to the transmitter and the receiver.

[0064] In one embodiment, please refer to Figure 4 , Figure 4 For Figure 1 the structural schematic diagram of the speed detection device 5 in

[0065] Further, the speed detection device 5 further includes a synchronous belt 53 and two synchronous pulleys 52. The two synchronous pulleys 52 are respectively connected to the drive shaft of the frame conveying mechanism 1 and the encoder 51, and the synchronous belt 53 is sleeved outside the two synchronous pulleys 52. The synchronous pulley 52 can be specifically fixedly connected to the drive shaft end cover pressing plate 54. Through the transmission of the synchronous pulley 52 and the synchronous belt 53, it can not only ensure the synchronous transmission of the rotation of the drive shaft to the encoder 51, but also change the position of the detection point to facilitate the layout of the encoder 51. Specifically, an installation column can be set, and the encoder 51 is arranged on the installation column.

[0066] In one embodiment, both the head-end lifting mechanism 31 and the tail-end lifting mechanism 32 can adopt electric hoists. The specific structure and working principle of the electric hoist can refer to the prior art. As Figure 5 shown, the head-end electric hoist includes a traveling motor 316, a lifting motor 315, a scissor fork device 314, a roller chain drive motor 313, a flipping chain 312, and a sling 311. The traveling motor 316, as the electric hoist drive motor, can drive the electric hoist to realize the front-back traveling function on the lifting track 2; the scissor fork device 314 can cooperate with the need to realize the lifting function by using its structural elasticity; the roller chain drive motor 313 is meshed and connected to the flipping chain 312 through a gear; the sling directly connected to the chain 312 is a toothed nylon lifting sling, and the head-end sling 311 and the tail-end sling 321 as described above are respectively corresponding to the head-end and tail-end lifting electric arc furnaces. The head-end lifting mechanism 31 and the tail-end lifting mechanism 32 adopting the electric hoist structure are simple, and the lifting and traveling are reliable. In other embodiments, the head-end lifting mechanism 31 and the tail-end lifting mechanism 32 can also adopt other driving devices such as robotic arms.

[0067] The present invention also provides a full-automatic flipping method for a frame chassis, which uses but is not limited to any one of the full-automatic flipping systems for frame chassis in the above embodiments, including:

[0068] The frame chassis travels with the frame conveying mechanism, and the speed detection device detects the traveling speed of the frame chassis;

[0069] When the first position sensor detects that the frame chassis travels with the frame conveying mechanism to the first preset position, the head-end lifting mechanism drives the head-end sling to descend to the threading height;

[0070] After a preset delay time for the head-end lifting mechanism to drive the head-end sling to descend, the tail-end lifting mechanism drives the tail-end sling to descend to the threading height;

[0071] When the second position sensor detects that the frame chassis travels with the frame conveying mechanism to the second preset position, the frame chassis travels into the head-end sling, and the head-end sling corresponds to the head-end point of the frame chassis;

[0072] The tail-end lifting mechanism first accelerates and then decelerates to the following speed along the hoisting track, so that the tail-end sling penetrates into the vehicle frame chassis and corresponds to the tail-end point of the vehicle frame chassis;

[0073] The head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to rise synchronously to enclose the vehicle frame chassis, completing the sling enclosure;

[0074] The head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to move synchronously to flip the vehicle frame chassis;

[0075] Among them, the following speed is the same as the traveling speed of the vehicle frame chassis.

[0076] That is, the vehicle frame chassis to be flipped travels with the vehicle frame conveying mechanism, and the speed detection device detects the traveling speed of the vehicle frame chassis. As the vehicle frame chassis travels, when the first position sensor detects that the vehicle frame chassis reaches the first preset position, the head-end lifting mechanism drives the head-end sling to descend to the belt-passing height. It can be understood that the belt-passing height should be lower than the sling-enclosing height of the head-end sling, that is, the vehicle frame chassis can pass through the head-end sling but is not tightly enclosed. After the head-end lifting mechanism drives the head-end sling to descend for a delayed preset time, the tail-end lifting mechanism drives the tail-end sling to descend to the belt-passing height, and the belt-passing height at the tail end is the same as that at the head end to meet the requirement that the vehicle frame chassis passes through the tail-end sling. The specific magnitude of the preset time can be determined according to the speed of the vehicle frame conveying mechanism and the initial position of the tail-end sling to avoid movement interference caused by the tail-end sling descending into the traveling path of the vehicle frame chassis.

[0077] As the vehicle frame chassis travels, when the second position sensor detects that the vehicle frame chassis travels with the vehicle frame conveying mechanism to the second preset position, the vehicle frame chassis travels into and passes through the head-end sling, and the head-end sling corresponds to the head-end point of the vehicle frame chassis. The head-end point is the sling-inserting point on the vehicle frame chassis corresponding to the head-end sling; specifically, the tail-end lifting mechanism can first accelerate and then decelerate to the following speed along the hoisting track after the head-end sling corresponds to the head-end point of the vehicle frame chassis, that is, the tail-end sling catches up with the vehicle frame chassis, so that the tail-end sling penetrates into the vehicle frame chassis and corresponds to the tail-end point of the vehicle frame chassis. The tail-end point is the sling-inserting point on the vehicle frame chassis corresponding to the tail-end sling.

[0078] After the head-end sling corresponds to the head-end point and the tail-end sling corresponds to the tail-end point, the head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to rise synchronously to enclose the vehicle frame chassis, completing the sling enclosure.

[0079] Applying the full-automatic flipping method for the vehicle frame chassis provided by the present invention can realize the automatic following sling enclosure of the vehicle frame chassis without manual operation, thus liberating human labor and accelerating the production beat. In addition, the potential safety hazards caused by manual operation are reduced.

[0080] In one embodiment, the full-automatic flipping method of the vehicle frame chassis further includes:

[0081] When the first position sensor detects that the vehicle frame chassis travels to the first preset position along with the vehicle frame conveying mechanism, the head-end driving device drives the head-end vision camera to increase its speed to the accompanying speed;

[0082] When the second position sensor detects that the vehicle frame chassis travels to the second preset position along with the vehicle frame conveying mechanism, the tail-end driving device drives the tail-end vision camera to increase its speed to the accompanying speed;

[0083] After the strap is put on, it further includes:

[0084] The head-end vision camera and the tail-end vision camera respectively take pictures of the head-end point and the tail-end point. If the head-end sling and the tail-end sling are both successfully put on the strap, the head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to move synchronously to flip the vehicle frame chassis. Otherwise, an alarm reminder is output and / or the vehicle frame conveying mechanism, the head-end lifting mechanism, and the tail-end lifting mechanism are controlled to stop.

[0085] The settings of the head-end vision camera, the tail-end vision camera, the head-end driving device, and the tail-end driving device can all refer to the relevant descriptions in the above full-automatic flipping system of the vehicle frame chassis, which will not be elaborated here. Through the above settings, the head-end vision camera and the tail-end vision camera can accompany the vehicle frame chassis and detect whether the head-end sling and the tail-end sling are successfully put on the strap, so as to give an alarm in time or take corresponding emergency measures when the strap is not successfully put on, improving safety.

[0086] In one embodiment, the full-automatic flipping method of the vehicle frame chassis further includes:

[0087] When the head-end vision camera, the head-end sling, and the head-end point correspond to each other, the head-end vision camera takes a picture;

[0088] When the tail-end vision camera, the tail-end sling, and the tail-end point correspond to each other, the tail-end vision camera takes a picture.

[0089] Specifically, when the head-end vision camera, the head-end sling, and the head-end position point are all corresponding, the head-end vision camera takes the first photo to detect whether the head-end sling actually corresponds to the head-end position point; when the tail-end vision camera, the tail-end sling, and the tail-end position point are all corresponding, the tail-end vision camera takes the first photo to detect whether the tail-end sling actually corresponds to the tail-end position point. It can be understood that the correspondence of the head-end vision camera, the head-end sling, and the head-end position point here means that the action of the head-end drive device is controlled according to the running speed of the vehicle frame chassis and follows the running of the vehicle frame chassis. Theoretically, the head-end vision camera, the head-end sling, and the head-end position point are all corresponding; the correspondence of the tail-end vision camera, the tail-end sling, and the tail-end position point here means that the action of the head-end drive device, the action of the tail-end lifting mechanism are controlled according to the running speed of the vehicle frame chassis and follows the running of the vehicle frame chassis. Theoretically, the tail-end vision camera, the tail-end sling, and the tail-end position point are all corresponding. By detecting the positions of the head-end sling and the tail-end sling multiple times, the operating safety of the system is further improved.

[0090] In one embodiment, before the first position sensor detects that the vehicle frame chassis travels to the first preset position along with the vehicle frame conveying mechanism, it further includes: the head-end lifting mechanism and the tail-end lifting mechanism respectively travel along the lifting track to the head-end receiving position and the tail-end receiving position above the vehicle frame conveying mechanism, and the distance between the head-end receiving position and the tail-end receiving position is not less than the body length of the chassis vehicle frame. That is, the head-end lifting mechanism and the tail-end lifting mechanism are pre-traveled to the head-end receiving position and the tail-end receiving position to wait. Of course, if the head-end lifting mechanism and the tail-end lifting mechanism themselves are in the states of being located at the head-end receiving position and the tail-end receiving position, the above steps are not required.

[0091] To better illustrate the vehicle frame chassis full-automatic flipping system and method provided by the present invention, the following takes a specific embodiment as an example for elaboration.

[0092] In this embodiment, the head-end lifting mechanism of the vehicle frame chassis full-automatic flipping system is a head-end lifting electric arc furnace, the tail-end lifting mechanism is a tail-end lifting electric arc furnace, the speed detection device uses an encoder, and the first position sensor and the second position sensor respectively use a first photoelectric sensor and a second photoelectric sensor. Then the operation of flipping the vehicle frame chassis generally includes the following steps:

[0093] Step 1: The vehicle frame chassis to be flipped travels along with the vehicle frame conveying mechanism. The RFID automatically reads the vehicle frame information and transmits it to the control system to judge the vehicle type and make standby preparations for the work station; the encoder obtains the running speed (which is also the accompanying speed) of the vehicle frame conveying mechanism through the synchronous belt and the synchronous pulley, and transmits this speed to the control system;

[0094] Step 2: The PLC control system controls the head-end lifting electric hoist and the tail-end lifting electric hoist on the overhead truss track to travel from the initial origin position to the head-end receiving position and the tail-end receiving position directly above the vehicle frame conveying mechanism respectively, and the distance between the head-end receiving position and the tail-end receiving position is the body length;

[0095] Step 3: The first photoelectric sensor emits a first laser beam, and the second photoelectric sensor emits a second laser beam. When the chassis of the vehicle frame travels with the vehicle frame conveying mechanism until the front end reaches the position of the first photoelectric sensor, the first laser beam is blocked, and the first photoelectric sensor transmits the signal indicating the arrival of the chassis of the vehicle frame to the control system.

[0096] Step 4: The control system issues an instruction to the lifting motor of the head-end hoist, controls the scissor lift device to drive the head-end sling downward, and stops when it reaches the tape threading height. At the same time, the control system issues an instruction to the lifting motor of the tail-end hoist, and after a preset delay time, controls the scissor lift device to move downward and stop when it reaches the tape threading height. At the same time, the head-end vision camera is driven by the head-end drive device to slowly increase its speed to the accompanying speed. At this time, the head-end point positions of the head-end vision camera, the head-end sling, and the chassis of the vehicle frame are located at the same horizontal position.

[0097] Step 5: When the chassis of the vehicle frame continues to travel with the vehicle frame conveying mechanism until the front end reaches the position of the second photoelectric sensor, the second laser beam is blocked, and the second photoelectric sensor transmits the signal indicating the arrival of the chassis of the vehicle frame to the control system. The control system controls the tail-end vision camera to be driven by the tail-end drive device to slowly increase its speed to the accompanying speed.

[0098] Step 6: After the tail-end sling descends to the tape threading height, the drive motor of the tail-end electric arc furnace chases after the chassis of the vehicle frame, first accelerates and then decelerates to the accompanying speed. At this time, the tail-end point positions of the tail-end vision camera, the tail-end electric hoist sling, and the chassis of the vehicle frame are located at the same horizontal position.

[0099] Step 7: When the head-end point positions of the head-end vision camera, the head-end sling, and the chassis of the vehicle frame are located in the same plane, the head-end vision camera takes the first photo. When the tail-end point positions of the tail-end vision camera, the tail-end sling, and the chassis of the vehicle frame are located in the same plane, the tail-end vision camera takes the first photo. When the head-end vision camera detects that the head-end sling and the chassis of the vehicle frame are both in place, and the tail-end vision camera detects that the tail-end sling and the chassis of the vehicle frame are both in place, the tape threading operation is completed. Otherwise, an alarm is issued and the accompanying movement stops, waiting for manual handling.

[0100] Step 8: After the tape threading operation is completed, the head-end vision camera and the tail-end vision camera take photos of the tape threading position again for detection. If successful tape threading is detected, the next step is continued. Otherwise, an alarm is issued and the accompanying movement stops, waiting for manual handling.

[0101] Step 9: The lifting motors of the head-end hoist and the tail-end electric arc furnace drive the head-end sling and the tail-end sling to lift the vehicle frame chassis to the flipping height. The roller chain drive motor drives the gear to rotate clockwise. At this time, the left side of the vehicle frame chassis in the head-end sling and the tail-end sling receives an upward frictional force. The toothed lifting nylon sling uses its special structure and frictional force to drive the vehicle frame chassis to achieve a clockwise flip (calculate the moving distances of the head-end sling and the tail-end sling according to the vehicle frame width and the vehicle model flipping angle in the vehicle frame information. After the gear rotates and the head-end sling and the tail-end sling move this distance, they stop);

[0102] Step 10: After the flipping is completed, the head-end hoist and the tail-end electric arc furnace still move forward. When they are directly above the skid, the head-end hoist and the tail-end electric arc furnace lower the vehicle frame chassis. After the vehicle frame chassis is lowered onto the skid, the head-end hoist moves forward to disengage from the vehicle frame chassis, and the tail-end hoist moves backward to disengage from the vehicle frame chassis. After disengagement, the head-end hoist and the tail-end electric arc furnace respectively lift the head-end sling and the tail-end sling to the ready-to-lift height and then walk through the elliptical lifting track to the working position to perform the next flipping process.

[0103] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0104] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fully automatic flipping method for a vehicle frame chassis, characterized in that, It is realized by applying a fully automatic flipping system for a vehicle frame chassis. The system includes: A vehicle frame conveying mechanism for supporting and driving the vehicle frame chassis to move; A hoisting track provided above the vehicle frame conveying mechanism; A head-end hoisting mechanism and a tail-end hoisting mechanism, which are respectively provided above the vehicle frame conveying mechanism and can travel along the hoisting track. A head-end sling is connected to the bottom end of the head-end hoisting mechanism, and the head-end sling can be lifted and lowered under the drive of the head-end hoisting mechanism. A tail-end sling is connected to the bottom end of the tail-end hoisting mechanism, and the tail-end sling can be lifted and lowered under the drive of the tail-end hoisting mechanism; A first position sensor and a second position sensor are arranged at intervals along the moving direction of the vehicle frame conveying mechanism. The first position sensor is used to detect whether the vehicle frame chassis reaches a first preset position, and the second position sensor is used to detect whether the vehicle frame chassis reaches a second preset position; A speed detection device for detecting the traveling speed of the vehicle frame chassis; The method includes: The vehicle frame chassis travels with the vehicle frame conveying mechanism, and the speed detection device detects the traveling speed of the vehicle frame chassis; When the first position sensor detects that the vehicle frame chassis travels with the vehicle frame conveying mechanism to the first preset position, the head-end hoisting mechanism drives the head-end sling to descend to the belt-passing height; After a preset delay time when the head-end hoisting mechanism drives the head-end sling to descend, the tail-end hoisting mechanism drives the tail-end sling to descend to the belt-passing height; When the second position sensor detects that the vehicle frame chassis travels with the vehicle frame conveying mechanism to the second preset position, the vehicle frame chassis travels into and passes through the head-end sling, and the head-end sling corresponds to the head-end point position of the vehicle frame chassis; The tail-end hoisting mechanism accelerates first and then decelerates to the accompanying speed along the hoisting track, so that the tail-end sling passes through the vehicle frame chassis and corresponds to the tail-end point position of the vehicle frame chassis; The head-end hoisting mechanism and the tail-end hoisting mechanism respectively drive the head-end sling and the tail-end sling to rise synchronously to wrap the vehicle frame chassis, completing the belt wrapping; The head-end hoisting mechanism and the tail-end hoisting mechanism respectively drive the head-end sling and the tail-end sling to move synchronously to flip the vehicle frame chassis; Wherein, the accompanying speed is the same as the traveling speed of the vehicle frame chassis.

2. The fully automatic flipping method of the vehicle frame chassis according to claim 1, characterized in that, The system further includes a vision mechanism arranged on one side of the vehicle frame conveying mechanism. The vision mechanism includes: A head-end vision camera arranged on the side of the second position sensor away from the first position sensor; A tail-end vision camera arranged on the side of the first position sensor away from the second position sensor; A head-end driving device, the output end of the head-end driving device is connected to the head-end vision camera to drive the head-end vision camera to move along the moving direction of the vehicle frame conveying mechanism; A tail-end driving device, the output end of the tail-end driving device is connected to the tail-end vision camera to drive the tail-end vision camera to move along the moving direction of the vehicle frame conveying mechanism.

3. The fully automatic flipping method of the vehicle frame chassis according to claim 2, characterized in that The head-end driving device includes a head-end linear guide rail, a head-end motor, and a head-end bracket. The head-end bracket is slidably connected to the head-end linear guide rail. The head-end vision camera is fixed to the head-end bracket. The output end of the head-end motor is connected to the head-end bracket to drive the head-end bracket to move along the head-end linear guide rail. The tail-end driving device includes a tail-end linear guide rail, a tail-end motor, and a tail-end bracket. The tail-end bracket is slidably connected to the tail-end linear guide rail. The tail-end vision camera is fixed to the tail-end bracket. The output end of the tail-end motor is connected to the tail-end bracket to drive the tail-end bracket to move along the tail-end linear guide rail.

4. The fully automatic flipping method of the vehicle frame chassis according to claim 1, characterized in that, The first position sensor and the second position sensor are respectively a first photoelectric sensor and a second photoelectric sensor. The emitter and the receiver of the first photoelectric sensor are respectively located at both ends of the vehicle frame conveying mechanism. The emitter and the receiver of the second photoelectric sensor are respectively located at both ends of the vehicle frame conveying mechanism.

5. The fully automatic flipping method of the vehicle frame chassis according to any one of claims 1-4, characterized in that, The speed detection device includes an encoder connected to the drive shaft of the vehicle frame conveying mechanism.

6. The fully automatic flipping method of the vehicle frame chassis according to claim 5, characterized in that, The speed detection device further includes a synchronous belt and two synchronous pulleys. The two synchronous pulleys are respectively connected to the drive shaft of the vehicle frame conveying mechanism and the encoder. The synchronous belt is sleeved outside the two synchronous pulleys.

7. The fully automatic flipping method of the vehicle frame chassis according to claim 1, wherein, It further includes: When the first position sensor detects that the vehicle frame chassis travels to the first preset position along with the vehicle frame conveying mechanism, the head-end driving device drives the head-end vision camera to increase its speed to the accompanying speed. When the second position sensor detects that the vehicle frame chassis travels to the second preset position along with the vehicle frame conveying mechanism, the tail-end driving device drives the tail-end vision camera to increase its speed to the accompanying speed. After the belt sleeving is completed, it further includes: The head-end vision camera and the tail-end vision camera respectively take pictures of the head-end point and the tail-end point. If the head-end sling and the tail-end sling are both successfully sleeved, the head-end lifting mechanism and the tail-end lifting mechanism respectively drive the head-end sling and the tail-end sling to move synchronously to flip the vehicle frame chassis. Otherwise, an alarm reminder is output and / or the vehicle frame conveying mechanism, the head-end lifting mechanism, and the tail-end lifting mechanism are controlled to stop.

8. The fully automatic flipping method of the vehicle frame chassis according to claim 7, characterized in that It further includes: When the head-end vision camera, the head-end sling, and the head-end point correspond to each other, the head-end vision camera takes a picture. When the tail-end vision camera, the tail-end sling, and the tail-end point correspond to each other, the tail-end vision camera takes a picture.

9. The fully automatic flipping method of the vehicle frame chassis according to any one of claims 1, 7, and 8, characterized in that Before the first position sensor detects that the vehicle frame chassis travels to the first preset position along with the vehicle frame conveying mechanism, it further includes: The head-end lifting mechanism and the tail-end lifting mechanism respectively travel along the lifting track to the head-end receiving position and the tail-end receiving position above the vehicle frame conveying mechanism. The distance between the head-end receiving position and the tail-end receiving position is not less than the body length of the vehicle frame chassis.

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