Accompanying track driving assembly and accompanying air tightness detection device

Abstract

The utility model discloses an accompanying track driving assembly. The accompanying track driving assembly comprises a linear guide rail, a moving frame and a driving device arranged on the moving frame. The linear guide rail is a C-shaped guide rail with a downward opening and comprises a top plate and side plates located on the two sides of the top plate, the top plate is hoisted and fixed through a rigid fixing piece, the lower ends of the two side plates are provided with eaves bent inwards, the upper surfaces of the eaves are provided with protruding rails, and the rails extend in the extending direction of the linear guide rail. The utility model further provides an accompanying air tightness detection device which comprises the accompanying track driving assembly and a positive pressure air tightness leak detection device. By the adoption of the technical scheme, the moving frame can be prevented from inclining or deviating left and right, an auxiliary side pressing roller does not need to be installed, and therefore the assembly structure is simplified, and the operation stability of the moving frame can still be guaranteed; the accompanying air tightness detection device can move along with the vehicle body during air tightness detection, so that the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a traveling track driving component and a traveling air tightness detection device, belonging to the technical field of automobile production process equipment. Background Art

[0002] On the automobile production line, testing the tightness of the coolant pipeline is a key step to ensure that the cooling system is leak-free and works properly. This process usually detects the air tightness of the pipeline by filling it with compressed air. First, slowly fill the pipeline with compressed air, usually with a pressure range of about 0.2 to 0.3MPa. Gradually pressurizing can avoid damage to equipment or pipelines caused by sudden pressure changes. The pressure change in the pipeline is monitored in real time by a pressure sensor. When the pressure reaches the set value, maintain the pressure for a period of time (usually a few minutes) to observe whether there is a pressure drop. Record the pressure change data. If the pressure is stable during the holding period and there is no obvious drop, it means that the pipeline is well sealed. If the pressure drops significantly according to the preset standards and recorded data, further inspection and repair are required. On the automobile production line, the air tightness test of the coolant pipeline is usually fixed-position detection, which greatly reduces the detection efficiency. In order to adapt to the production rhythm, additional equipment for filling compressed air is often added to the accompanying filling machine to detect the air tightness of the pipeline. Since the accompanying filling machine is used to add coolant to the vehicle body, its own filling pipeline, negative pressure vacuum pipeline, explosion-proof pipeline and control system are relatively complex, and it is even more complicated after integrating the sealing test equipment. At the same time, in order to ensure the requirements of production rhythm, the inflation time, voltage stabilization and pressure maintenance processes are relatively rough, resulting in the inability to expose functional defects caused by casting, processing, micro-leakage, etc. Therefore, one of the purposes of the utility model is to provide a separate device for air tightness detection. In addition, most of the existing accompanying track units are hoisted for equipment, and the hanging wheels are pressed on the upper horizontal surface of the track, and the hanging wheels are connected to the equipment frame located below. In order to maintain stability during movement, it is also necessary to set side pressure rollers to press on the two side walls of the track to prevent the equipment frame from tilting or shifting left and right. Therefore, another purpose of the utility model is to provide a traveling track drive assembly that does not require the provision of side pressure rollers, thereby simplifying the assembly structure. Utility Model Content

[0003] Therefore, the purpose of the present utility model is to provide a traveling track driving assembly and a traveling air tightness detection device.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a traveling rail driving assembly, comprising a linear guide rail, a movable frame and a driving device arranged on the movable frame; the linear guide rail is a C-shaped guide rail opening downward, comprising a top plate and side plates located on both sides of the top plate, the top plate is hoisted and fixed by a rigid fixing part, the lower ends of the two side plates are provided with eaves bent inwardly, the upper surface of the eaves is provided with a raised track, and the track extends along the extension direction of the linear guide rail; two rows of hanging wheels are provided on the movable frame, annular grooves are provided on the circumferential surface of the hanging wheels, the two rows of hanging wheels are respectively located above the two eaves, and the track is located in the annular grooves; the driving device comprises a driving motor, a driving shaft connected to the power output end of the driving motor, and two driving wheels arranged on the driving shaft, and the two driving wheels are respectively pressed on the lower surface of the eaves.

[0005] The rigid fixing members are in two rows, and the two rows of rigid fixing members are arranged vertically above the eaves.

[0006] The driving motor is vertically arranged, the output shaft of the driving motor is connected to a reduction box, the reduction box is connected to the driving shaft, and the two driving wheels are distributed on both sides of the reduction box.

[0007] The driving wheel is a gear, and the lower surface of the eaves is provided with tooth patterns matching the gear.

[0008] A plurality of suspension rods extending to one side are also arranged on the linear guide rail, and a drag chain box and a drag chain are arranged on the suspension rods.

[0009] An anti-collision block is also arranged at the end of the linear guide rail.

[0010] The utility model also provides a traveling air tightness detection device, including the traveling track drive assembly and the positive pressure air tightness leak detection equipment as described above; the positive pressure air tightness leak detection equipment is arranged on the mobile frame, including an air source, a booster pump, a filter, a gas-liquid separator, a valve, a pressure gauge and an inflation gun which are arranged in sequence.

[0011] By adopting the above technical scheme, the accompanying track driving assembly of the utility model clamps the eaves through the hanging wheels and driving wheels located on the upper and lower sides of the eaves, and the track on the upper surface of the eaves limits the hanging wheels to the left and right deviations, thereby preventing the mobile frame from tilting or deviating to the left and right. There is no need to install auxiliary side pressure rollers, thereby simplifying the assembly structure and still ensuring the operating stability of the mobile frame; the accompanying air tightness detection device can move with the vehicle body when performing air tightness detection to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the portable air tightness detection device of the utility model.

[0013] Figure 2 It is a side view of the portable air tightness detection device of the present utility model.

[0014] Figure 3 This is the structural principle diagram of the positive pressure airtightness leak detection equipment.

[0015] In the figure: 1. accompanying track drive assembly; 11. linear guide rail; 111. top plate; 112. side plate; 113. eaves; 114. track; 12. mobile frame; 13. drive device; 131. drive motor; 132. reduction gearbox; 133. drive shaft; 134. drive wheel; 14. rigid fixing part; 15. hanging wheel; 151. annular groove; 16. hanging rod; 17. drag chain box; 18. anti-collision block; 2. positive pressure air tightness leak detection equipment; 21. filter; 22. gas-liquid separator; 23. valve; 24. pressure gauge; 25. air source interface; 26. booster pump interface; 27. air charging gun interface; 3. electric control box; 4. control panel; 5. air charging gun rack; 6. scanning gun rack. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below through the accompanying drawings and specific implementation methods.

[0017] like Figure 1-3 As shown, the utility model provides a traveling air tightness detection device, including a traveling track drive assembly 1 and a positive pressure air tightness leak detection device 2. The traveling track drive assembly 1 includes a linear guide rail 11, a moving frame 12 and a drive device 13 arranged on the moving frame 12. The positive pressure air tightness leak detection device 2 is arranged on the moving frame 12, and includes an air source, a booster pump, a filter 21, a gas-liquid separator 22, a valve 23, a pressure gauge 24 and an air charging gun arranged in sequence. The gas of the air source enters the filter 21 for filtration after being pressurized by the booster pump, and enters the gas-liquid separator 22 for gas-liquid separation, and then is injected into the coolant pipeline through the air charging gun. After the inflation is completed, the valve 23 is closed to maintain the pressure, and the pressure maintaining reading can be obtained through the pressure gauge 24.

[0018] The linear guide 11 is a C-shaped guide with an opening facing downward, including a top plate 111 and side plates 112 located on both sides of the top plate 111. The top plate 111 is hoisted and fixed by a rigid fixing member 14. The lower ends of the two side plates 112 are provided with eaves 113 bent inwardly. The upper surface of the eaves 113 is provided with a raised track 114. The track 114 extends along the extension direction of the linear guide 11.

[0019] The movable frame 12 is provided with two rows of hanging wheels 15, and an annular groove 151 is provided on the surface of the hanging wheel 15 at the middle position around the circumference of the hanging wheel 15, and the cross section of the annular groove 151 is arc-shaped. The two rows of hanging wheels 15 are respectively located above the two eaves 113, and the track 114 is located in the annular groove 151.

[0020] The driving device 13 includes a driving motor 131 , a reduction box 132 connected to the output shaft of the driving motor 131 , a driving shaft 133 connected to the reduction box 132 , and two driving wheels 134 arranged on the driving shaft 133 . The two driving wheels 134 are distributed on both sides of the reduction box 132 .

[0021] The two driving wheels 134 are respectively pressed against the lower surface of the eaves 113 , and the driving wheels 134 can be friction wheels or gears. When the driving wheels 134 are gears, the lower surface of the eaves 113 is provided with tooth patterns that match the gears.

[0022] The hanging wheels 15 and the driving wheels 134 located on the upper and lower sides of the eaves 113 can clamp the eaves 113 to prevent the moving frame 12 from tilting or swinging. The track 114 can limit the left and right deviation of the hanging wheels 15.

[0023] In this embodiment, there are two rows of rigid fixing members 14, and the two rows of rigid fixing members 14 are arranged vertically above the eaves 113, so that the forces of the rigid fixing members 14 and the forces of the hanging wheels 15 are basically maintained on the same vertical plane.

[0024] A plurality of suspension rods 16 extending to one side are further provided on the linear guide rail 11 , and a drag chain box 17 and a drag chain are provided on the suspension rods 16 .

[0025] An anti-collision block 18 is also provided at the end of the linear guide rail 11 .

[0026] Obviously, the above embodiments are only examples for clear explanation, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from them are still within the protection scope of the invention of the utility model.

Claims

1. A traveling track driving assembly, characterized in that: It includes a linear guide rail, a movable frame and a driving device arranged on the movable frame; the linear guide rail is a C-shaped guide rail with an opening downward, including a top plate and side plates located on both sides of the top plate, the top plate is hoisted and fixed by a rigid fixing part, and the lower ends of the two side plates are provided with eaves bent inwardly, and the upper surface of the eaves is provided with a raised track, and the track extends along the extension direction of the linear guide rail; two rows of hanging wheels are provided on the movable frame, and annular grooves are provided on the circumferential surface of the hanging wheels, the two rows of hanging wheels are respectively located above the two eaves, and the track is located in the annular grooves; the driving device includes a driving motor, a driving shaft connected to the power output end of the driving motor, and two driving wheels arranged on the driving shaft, and the two driving wheels are respectively pressed against the lower surface of the eaves.

2. The accompanying rail drive assembly according to claim 1, characterized in that: The driving motor is vertically arranged, the output shaft of the driving motor is connected to a reduction box, the reduction box is connected to the driving shaft, and the two driving wheels are distributed on both sides of the reduction box.

3. The accompanying rail drive assembly according to claim 1, characterized in that: The driving wheel is a gear, and the lower surface of the eaves is provided with tooth patterns matching the gear.

4. The accompanying rail drive assembly according to any one of claims 1 to 3, characterized in that: A plurality of suspension rods extending to one side are also arranged on the linear guide rail, and a drag chain box and a drag chain are arranged on the suspension rods.

5. The accompanying rail drive assembly according to any one of claims 1 to 3, characterized in that: The rigid fixing members are in two rows, and the two rows of rigid fixing members are arranged vertically above the eaves.

6. The accompanying rail driving assembly according to any one of claims 1 to 3, characterized in that: An anti-collision block is also arranged at the end of the linear guide rail.

7. A portable air tightness detection device, characterized in that: It comprises a traveling rail drive assembly as described in any one of claims 1 to 6 and a positive pressure air tightness leak detection device; the positive pressure air tightness leak detection device is arranged on a mobile frame, and comprises an air source, a booster pump, a filter, a gas-liquid separator, a valve, a pressure gauge and an air filling gun which are arranged in sequence.

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