Automobile chassis assembly line

Abstract

An automobile chassis assembly line comprises an automobile body hoisting line, a chassis conveying line and a plurality of lifting locking devices which are sequentially arranged at intervals from top to bottom, and the lifting locking devices are arranged at equal intervals in the conveying direction of the chassis conveying line. The chassis conveying line is provided with an avoiding hole used for avoiding a lifting path of the lifting locking device, an action detection device is arranged in the avoiding hole and used for detecting the top position of the lifting locking device in the avoiding hole, the action detection device comprises an infrared sensor and an indicator lamp, the indicator lamp is arranged at the bottom end of the lifting locking device, and the infrared sensor is arranged on the chassis conveying line. And a proximity protection switch is arranged on the lifting locking device. Through the lifting locking device and the action detection device, previous manual tightening is replaced by tightening guided by an automatic machine, so that the production efficiency is greatly improved while the safety and the yield are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, and particularly relates to an automobile chassis assembly line. Background Technique

[0002] The co-assembly process is the most complex process in the general assembly workshop. The components such as the front and rear suspensions of the chassis complete the "combination" and "assembly" processes with the vehicle body, directly affecting production output, quality, and efficiency. The early planning involves a wide range of aspects and requires comprehensive balancing of various factors such as product platformization, modularization, process route, layout, equipment capacity, investment, personnel, maintainability, man-machine, and safety. It can be called the "pearl on the crown" of the general assembly process. The dynamic continuous co-assembly is restricted by the in-process accuracy. It is difficult to arrange automatic tightening after co-assembly, and the on-site control requirements are relatively high to ensure product quality; the overall static co-assembly has a relatively high degree of automation and conforms to the development trend of the "Industry 4.0" in the general assembly workshop, but the product quality needs to be ensured by the equipment. Content of the Utility Model

[0003] The purpose of the utility model is to provide an automobile chassis assembly line to solve the problems existing in the above-mentioned prior art.

[0004] The above technical purpose of the utility model is achieved through the following technical solutions:

[0005] An automobile chassis assembly line includes a vehicle body hoisting line, a chassis transportation line, and a lifting and locking device arranged at intervals from top to bottom in sequence. A plurality of the lifting and locking devices are provided, and the plurality of lifting and locking devices are arranged at equal intervals along the transportation direction of the chassis transportation line. An avoidance hole for avoiding the lifting path of the lifting and locking device is arranged on the chassis transportation line. An action detection device is arranged in the avoidance hole, and the action detection device is used to detect the top position of the lifting and locking device in the avoidance hole. The action detection device includes an infrared sensor and an indicator light. The indicator light is arranged at the bottom end of the lifting and locking device, and a proximity protection switch is arranged on the lifting and locking device.

[0006] By adopting the above technical solutions, the vehicle body hoisting line and the chassis transportation line cooperate to transport the vehicle body and the vehicle chassis to the corresponding positions of the lifting and locking device. The avoidance hole on the chassis transportation line enables the lifting and locking device to lift the chassis from it and complete the locking operation. The action detection device can ensure that the position of the lifting and locking device is reasonable, and situations such as incorrect tightening and missed tightening will not occur. The size of the avoidance hole should be larger than the locking part of the lifting device, so that the lifting and locking device can displace within a certain range and align with the positioning hole on the vehicle chassis.

[0007] In a further embodiment, the chassis transport line includes a belt conveyor, a storage rack, a robotic arm, and a commutator. The storage rack is disposed at the starting end of the belt conveyor. The robotic arm is disposed on one side of the storage rack. The robotic arm is configured to move an object on the storage rack onto the belt conveyor. The commutator is disposed at the end of the belt conveyor, and the commutator is configured to cause the object on the belt conveyor to change direction during movement.

[0008] By adopting the above technical solution, the robotic arm can continuously move the objects stored on the storage rack onto the belt conveyor. The belt conveyor itself has excellent carrying capacity and can bear the weight of the vehicle chassis. The commutator can improve the flexibility of the transport line, effectively utilize the production area in the factory, and is also convenient for the design and planning of the process and production line, ensuring production efficiency.

[0009] In a further embodiment, the infrared sensor includes a fixed bracket, an infrared emitter, an infrared receiver, and a protective housing. The fixed bracket is fixedly installed in the avoidance hole. The infrared emitter is disposed in the fixed bracket. The infrared receiver is fixedly installed in the avoidance hole, and the infrared receiver is disposed opposite to the infrared emitter. The protective housing is used to protect the infrared emitter.

[0010] By adopting the above technical solution, the infrared emitter in the fixed bracket in the avoidance hole can cooperate with the infrared receiver in the avoidance hole, so as to accurately measure the position and height of the lifting and locking device in the avoidance hole. At the same time, the protective housing can also protect the infrared emitter, avoiding problems such as reduced sensor accuracy or even damage due to impacts, dust, etc.

[0011] In a further embodiment, an audible and visual warning unit is disposed on the storage rack. The audible and visual warning unit is electrically connected to the infrared emitter through a wire harness. The audible and visual warning unit is composed of light sources of multiple different colors and a bass speaker.

[0012] By adopting the above technical solution, the audible and visual warning unit can simply and clearly inform the staff of the operating status of the assembly line and whether there are any parts that have failed, which can increase the timeliness of troubleshooting, improve production efficiency to a certain extent. At the same time, the audible and visual warning unit can also remind the staff that the assembly line has started operating, avoiding some dangerous operations by the staff at this time, thus ensuring safe production.

[0013] In a further embodiment, a parallel working switch is disposed on the robotic arm. The parallel working switch is electrically connected to the infrared sensor of the motion detection device.

[0014] By adopting the above technical solution, when the infrared sensor detects an abnormality, the parallel working switch will control the robotic arm to stop transporting the objects on the storage rack to the transportation line. After the fault is eliminated, the robotic arm can run again. The circuit of the parallel working switch determines that when any infrared sensor in the avoidance hole detects an abnormality, the robotic arm will stop, fully ensuring the reliability of the transportation line.

[0015] In a further embodiment, the commutator includes a fixed ring, a first motor, a second motor and a roller. The first motor is fixedly installed at the inner bottom end of the fixed ring. A fixing plate is fixedly installed on the top output shaft of the first motor. The outer wall of the fixing plate is in clearance fit with the inner wall of the fixed ring. The second motor is fixedly installed on the top of the fixing plate. The roller penetrates through the output shaft of the second motor, and the axis of the roller is horizontally arranged, and a flexible buffer layer is arranged on the surface of the roller.

[0016] By adopting the above technical solution, the commutator can flexibly turn the chassis on the transportation line, so that the space utilization rate of the entire assembly line is higher and the different processes are more compact. The flexible buffer layer on the surface of the roller also avoids scratches and bumps when the object contacts the roller. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of an automobile chassis assembly line of the present invention;

[0018] Figure 2 is the structural schematic diagram for showing the chassis transportation line in an automobile chassis assembly line of the present invention;

[0019] Figure 3 is the structural schematic diagram for showing the infrared sensor in an automobile chassis assembly line of the present invention;

[0020] Figure 4 is the structural schematic diagram for showing the commutator in an automobile chassis assembly line of the present invention.

[0021] In the figure, 1. Body hoisting line; 2. Chassis transportation line; 21. Belt conveyor; 22. Storage rack; 23. Robotic arm; 24. Commutator; 241. Fixed ring; 242. First motor; 243. Second motor; 244. Roller; 3. Lifting and locking device; 4. Action detection device; 41. Infrared sensor; 411. Fixed frame; 412. Infrared transmitter; 413. Infrared receiver; 414. Proximity protection housing; 42. Indicator light; 5. Protection switch; 6. Acousto-optic warning unit; 7. Parallel working switch. Detailed Embodiments

[0022] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] Among them, the same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the accompanying drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this specification, "a plurality of" means two or more unless otherwise specifically defined. Figure 1 In the description of this specification, "a plurality of" means two or more unless otherwise specifically defined.

[0024] Embodiment:

[0025] As Figures 1 - 3 shown, an automobile chassis assembly line includes a body hoisting line 1, a chassis transportation line 2, and a lifting and locking device 3 that are sequentially arranged at intervals from top to bottom. There are a plurality of lifting and locking devices 3, and the plurality of lifting and locking devices 3 are arranged at equal intervals along the transportation direction of the chassis transportation line 2. An avoidance hole for avoiding the lifting path of the lifting and locking device 3 is provided on the chassis transportation line 2, and an action detection device 4 is arranged in the avoidance hole. The action detection device 4 is used to detect the top position of the lifting and locking device 3 in the avoidance hole. The action detection device 4 includes an infrared sensor 41 and an indicator light 42. The infrared sensor 41 includes a fixing bracket 411, an infrared emitter 412, an infrared receiver 413, and a protective housing 414. The fixing bracket 411 is fixedly installed in the avoidance hole, the infrared emitter 412 is arranged in the fixing bracket 411, the infrared receiver 413 is fixedly installed in the avoidance hole, and the infrared receiver 413 is arranged opposite to the infrared emitter 412. The protective housing 414 is used to protect the infrared emitter 412. The indicator light 42 is arranged at the bottom end of the lifting and locking device 3. A proximity protection switch 5 is arranged on the lifting and locking device 3. Through the avoidance hole on the chassis transportation line 2, the lifting and locking device 3 can lift the automobile chassis from the avoidance hole and complete the locking after lifting to a suitable height. During this process, the action detection device 4 can detect the height and position of the lifting and locking device 3 to ensure that it completes the action smoothly.

[0026] As Figures 1 - 4As shown in the figure, the chassis transportation line 2 includes a belt conveyor 21, a storage rack 22, a robotic arm 23, and a commutator 24. The storage rack 22 is arranged at the starting end of the belt conveyor 21. The robotic arm 23 is arranged on one side of the storage rack 22. The robotic arm 23 is used to move the objects on the storage rack 22 onto the belt conveyor 21. A parallel working switch 7 is arranged on the robotic arm 23. The parallel working switch 7 is electrically connected to the infrared sensor 41 of the motion detection device 4. An acoustic-optic warning unit 6 is arranged on the storage rack 22. The acoustic-optic warning unit 6 is electrically connected to the infrared emitter 412 through a wire harness. The acoustic-optic warning unit is composed of light sources of various different colors and a bass speaker. The commutator 24 is arranged at the end of the belt conveyor. The commutator 24 is used to change the direction of the objects on the belt conveyor 21 during movement. The commutator 24 includes a fixed ring 241, a first motor 242, a second motor 243, and a roller 244. The first motor 242 is fixedly installed at the inner bottom end of the fixed ring 241. A fixing plate is fixedly installed on the top output shaft of the first motor 242. The outer wall of the fixing plate is in clearance fit with the inner wall of the fixed ring 241. The second motor 243 is fixedly installed on the top of the fixing plate. The roller 244 is penetrated on the output shaft of the second motor 243, and the axis of the roller 244 is horizontally arranged. A flexible buffer layer is arranged on the surface of the roller 244. The belt conveyor 21 has good transportation performance. In addition to the belt conveyor 21, a conveying method such as a skid that is convenient for the lifting and locking device 3 to lock from bottom to top can also be adopted. A parallel working switch 7 is arranged on the robotic arm 23 responsible for taking the objects from the storage rack 22. This working switch 7 is connected in parallel with the infrared sensor 41 and can detect whether the lifting and locking device 3 is in place. If a failure occurs in the lifting and locking device 3 at any avoidance hole at the bottom of the chassis transportation line 2, then the robotic arm 23 will also stop moving accordingly. This can effectively improve the reliability and safety of the production line.

[0027] Specific implementation process: First, the spreader on the vehicle body hoisting line 1 hoists the vehicle above the lifting and locking device 3, and the robotic arm 23 on one side of the storage rack places the vehicle chassis on the storage rack onto the chassis transportation line 2. The vehicle chassis is transported to above the lifting and locking device 3 through the belt conveyor 21. After both are in place, the lifting and locking device 3 starts to operate, rises through the avoidance hole on the chassis transportation line 2, lifts the vehicle chassis by a certain distance, and locks it through the device. A fixed frame 411 and an infrared receiver 413 are installed in the avoidance hole. An infrared emitter 412 is also provided inside the fixed frame 411. During the rising process of the lifting device, the infrared sensor 41 continuously detects. Once the lifting and locking device 3 is not in place or the position is abnormal, the parallel switch linked to the infrared sensor 41 immediately stops the feeding movement of the robotic arm 23 to ensure the safety of the overall assembly line. Finally, the assembled vehicle after final assembly moves to the next process through the vehicle body hoisting line 1. The commutator 24 provided on the transportation line also greatly improves the flexibility of the chassis transportation line 2 and can make more effective use of the production space.

[0028] In the embodiments disclosed in the present utility model, terms such as "installation", "connection", "attachment", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "attachment" can be a direct attachment or an indirect attachment through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments disclosed in the present utility model can be understood according to specific circumstances.

[0029] This specific embodiment is only an explanation of the present utility model and does not limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. An automobile chassis assembly line, comprising a body hoisting line (1), a chassis transportation line (2) and a lifting and locking device (3) which are arranged at intervals from top to bottom in sequence, wherein a plurality of the lifting and locking devices (3) are provided, and the plurality of lifting and locking devices (3) are arranged at equal intervals along the transportation direction of the chassis transportation line (2), and it is characterized in that: An avoidance hole for avoiding the lifting path of the lifting and locking device (3) is provided on the chassis conveying line (2). An action detection device (4) is provided in the avoidance hole. The action detection device (4) is used to detect the top position of the lifting and locking device (3) in the avoidance hole. The action detection device (4) includes an infrared sensor (41) and an indicator light (42). The indicator light (42) is arranged at the bottom end of the lifting and locking device (3). A proximity protection switch (5) is provided on the lifting and locking device (3).

2. The automotive chassis assembly line according to claim 1, wherein: The chassis conveying line (2) includes a belt conveyor (21), a storage rack (22), a robotic arm (23) and a commutator (24). The storage rack (22) is arranged at the starting end of the belt conveyor (21). The robotic arm (23) is arranged on one side of the storage rack (22). The robotic arm (23) is used to move the object on the storage rack (22) onto the belt conveyor (21). The commutator (24) is arranged at the end of the belt conveyor. The commutator (24) is used to change the direction of the object on the belt conveyor (21) during movement.

3. The automotive chassis assembly line according to claim 2, characterized in that: The infrared sensor (41) includes a fixing bracket (411), an infrared emitter (412), an infrared receiver (413) and a protective housing (414). The fixing bracket (411) is fixedly installed in the avoidance hole. The infrared emitter (412) is arranged in the fixing bracket (411). The infrared receiver (413) is fixedly installed in the avoidance hole, and the infrared receiver (413) is arranged opposite to the infrared emitter (412). The protective housing (414) is used to protect the infrared emitter (412).

4. The automotive chassis assembly line according to claim 3, wherein: An audible and visual warning unit (6) is provided on the storage rack (22). The audible and visual warning unit (6) is electrically connected to the infrared emitter (412) through a wire harness. The audible and visual warning unit is composed of light sources of various different colors and a bass speaker.

5. The automotive chassis assembly line according to claim 2, characterized in that: A parallel working switch (7) is provided on the robotic arm (23). The parallel working switch (7) is electrically connected to the infrared sensor (41) of the action detection device (4).

6. The automotive chassis assembly line according to claim 2, characterized in that: The commutator (24) is composed of a fixing ring (241), a first motor (242), a second motor (243) and a roller (244). The first motor (242) is fixedly installed at the inner bottom end of the fixing ring (241). A fixing plate is fixedly installed on the top output shaft of the first motor (242). The outer wall of the fixing plate is in clearance fit with the inner wall of the fixing ring (241). The second motor (243) is fixedly installed on the top of the fixing plate. The roller (244) is penetrated on the output shaft of the second motor (243), and the axis of the roller (244) is horizontally arranged. A flexible buffer layer is arranged on the surface of the roller (244).

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