Small-space automatic top cover conveying system

Abstract

The invention discloses a small-space automatic top cover conveying system. The small-space automatic top cover conveying system comprises two sets of main rails which are arranged in parallel and located in the air. Displacement systems are arranged at the two ends of the two sets of main rails correspondingly, and each displacement system comprises a displacement rail extending in the front-back direction and a displacement driving mechanism; the displacement track is driven by a displacement driving mechanism, so that the displacement track is displaced and switched between the two groups of main tracks; the self-propelled trolley travels on the main track / the displacement track; and an automatic height-adjusting lifting appliance is connected below the self-propelled trolley and is used for lifting or putting down the top cover. Through the operation mode of two-end rail transfer and automatic height adjustment of the lifting appliance, the problem that the space of an annular automatic lifting appliance is insufficient can be effectively solved, automatic lifting appliance carrying of the top cover is achieved, the manual production cost is reduced, the labor intensity is relieved, potential safety hazards are eliminated, investment is reduced, and meanwhile the requirement for the production takt is met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile manufacturing, and in particular to an automatic conveying system for a roof cover in a small space. Background Art

[0002] In our company's automobile body production, the roof cover is located at the rear of the body welding line, where the space is limited. The roof cover was originally transported to the body welding line manually, which resulted in high labor intensity, high labor costs, and potential safety hazards.

[0003] If manual reciprocating hoists are used for transportation, there are problems of limited space and insufficient operation rhythm, which will cause the top cover to not be in place in time, resulting in huge waste of time for the car body welding line to wait.

[0004] If ordinary automatic spreaders are used, the laying of the circular track cannot be completed normally due to the small space. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic conveying system for small space top covers, which adopts the operation mode of changing tracks at both ends and automatically adjusting the height of the spreader, which can effectively solve the problem of insufficient space for the circular automatic spreader and realize the automatic spreader transportation of the top cover.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: An automatic conveying system for roofs in small spaces comprises two sets of parallel main rails positioned in the air. Positioning systems are provided at both ends of the two sets of main rails. Each position-shifting system comprises a position-shifting rail extending in a front-to-rear direction and a position-shifting drive mechanism. The position-shifting drive mechanism drives the position-shifting rail to shift and switch between the two sets of main rails. It also includes one or more self-propelled trolleys, which run on the main track / displacement track; an automatic height-adjusting spreader is connected under the self-propelled trolley, which is used to lift or lower the top cover.

[0007] Furthermore, the shift drive mechanism includes shift cylinders arranged in the left and right directions, the piston ends of the shift cylinders are connected to moving seats, and the moving seats are connected to the shift track through a suspension device; It also includes a slide rail extending along the left and right directions, and the movable seat is slidably installed on the slide rail.

[0008] Furthermore, a first limit block and a second limit block are respectively provided at the head and tail positions of the moving track of the moving seat. When the moving seat contacts the first limit block for limiting the position, the shift track docks with a group of main tracks. When the moving seat contacts the second limit block for limiting the position, the shift track docks with another group of main tracks.

[0009] Furthermore, position limiting guard plates are respectively provided on the front and rear sides of the moving track of the displacement track. The position limiting guard plates extend in the left and right directions and are located between the two sets of main tracks.

[0010] Furthermore, the conveying direction of one set of main tracks is from front to back, and the conveying direction of the other set of main tracks is from back to front.

[0011] Furthermore, the self-propelled trolley includes a trolley body, on which a moving motor and a travel limiting wheel are installed. The travel limiting wheel rolls with the main track / variable track, and the moving motor drives the travel limiting wheel to rotate, thereby driving the self-propelled trolley to move; a downward-extending rigid hanger is installed on the trolley body, and the automatic height adjustment hanger is installed on the rigid hanger.

[0012] Furthermore, the automatic height-adjusting sling includes a lifting motor, a lifting sling, a lifting platform, a scissor-type jib, a limiting sling, a constant-force coil spring, and a top cover sling; The lifting motor is installed on the trolley body, and the lifting platform is installed on the rigid boom and slides with it in the up and down directions; the lifting motor is connected to the lifting rope, and the other end of the lifting rope is connected to the lifting platform to form a first-level lifting mechanism; The upper end of the scissor-type boom is connected to the lower end of the rigid boom, the lower end of the scissor-type boom is connected to the top cover sling, the upper end of the constant force coil spring is installed on the lifting platform, the lower end of the constant force coil spring is connected to the upper end of the limiting sling, and the lower end of the limiting sling is connected to the top cover sling to form a secondary lifting mechanism.

[0013] Furthermore, a first position-adjustable limiter is installed on the limiting sling, and a second limiter is provided on the lifting platform or the rigid suspension rod, and the first limiter and the second limiter form a limiting fit.

[0014] Furthermore, a roller is provided at the lower portion of the scissor-type boom, the outer edge of the roller is a V-shaped groove surface, and the limiting sling is installed in the V-shaped groove.

[0015] Furthermore, it also includes a PLC control system.

[0016] Beneficial effects of the present invention: The present invention can effectively solve the problem of insufficient space for the annular automatic spreader through the operation mode of changing tracks at both ends and automatically adjusting the height of the spreader, and realizes automatic spreader transportation of the top cover, which not only reduces labor production costs, alleviates labor intensity, and eliminates safety hazards, but also realizes the automation of top cover transportation, reduces investment, and also meets the requirements of production rhythm.

[0017] The automatic height-adjustable sling of the present invention utilizes a primary hoisting mechanism and a secondary hoisting mechanism. The secondary hoisting mechanism is equipped with a constant-force coil spring, which not only provides cushioning but also facilitates operation. When the scissor-type boom is lowered and the top cover is placed on the vehicle body, the top cover sling no longer bears the weight of the top cover. The constant-force coil spring causes the limit sling to rise, raising the bottom of the top cover sling to a higher level than the top of the top cover when the top cover is installed. This meets the required transport height, avoids interference with the site, and reduces the control action of the hoisting motor, thus reducing manipulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall front view of the present invention; Figure 2 It is an overall top view of the present invention; Figure 3 It is a front view of the displacement system of the present invention; Figure 4 is a top view of the displacement system of the present invention; Figure 5 is a side view of the displacement system of the present invention; Figure 6 This is a front view of the self-propelled trolley and the automatic height-adjusting spreader of the present invention; Figure 7 It is a top view of the self-propelled trolley and the automatic height-adjusting spreader of the present invention; Figure 8 It is a side view of the self-propelled trolley and the automatic height-adjusting spreader of the present invention.

[0019] The accompanying drawings are for illustrative purposes only and are not to be construed as limitations on this patent. To better illustrate this embodiment, some components of the accompanying drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted from the accompanying drawings. DETAILED DESCRIPTION

[0020] The following describes the specific embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0021] like Figures 1 to 8 As shown, this embodiment discloses an automatic conveying system for a small space roof, including a frame 1, a main track 2, a displacement system, a self-propelled trolley, an automatic height-adjusting hoist and a PLC control system 20.

[0022] Two sets of main rails 2 are provided in parallel and are installed on the top of the frame 1. The conveying direction of one set of main rails is from front to back, and the conveying direction of the other set of main rails is from back to front.

[0023] A shifting system is provided at both ends of the two sets of main rails 2. The shifting system includes a shifting rail 5 extending in the front-to-back direction and a shifting drive mechanism. The shifting drive mechanism drives the shifting rail 5 to shift and switch between the two sets of main rails.

[0024] The shift drive mechanism includes a shift cylinder 8 arranged in the left and right directions, the piston end of the shift cylinder 8 is connected to a moving seat 6, and the moving seat 6 is connected to the shift track 5 through a suspension device 61. It also includes two slide rails 4 extending in the left and right directions, and the moving seat 6 is slidably mounted on the slide rails 4.

[0025] Two sets of limit blocks (only one set of limit blocks 9 is shown in the figure) are located at the beginning and end of the moving base's trajectory: the first and second limit blocks. When the moving base 6 contacts the first limit block, the shifting track 5 docks with one set of main tracks. When the moving base contacts the second limit block, the shifting track 5 docks with the other set of main tracks.

[0026] At the same time, limit guard plates 7 are provided on both sides of the moving track of the shift rail 5. The limit guard plates 7 extend left and right and are located between the two sets of main rails 2. The distance between the two limit guard plates 7 is the same as the length of the shift rail 5. The length of the limit guard plates 7 should ensure that they do not block the connection between the shift rail 5 and the main rail 2.

[0027] The setting of the limiting guard plate 7 can ensure that the self-propelled trolley will not fall off the shifting track 5 when the shifting track 5 is shifted and switched between the two main tracks 2.

[0028] One or more self-propelled trolleys are provided according to production needs, and the self-propelled trolleys can travel on the main track 2 / the variable track 5. As the line beat increases, only the corresponding self-propelled trolleys need to be added to meet production needs.

[0029] The main track 2 / transfer track 5 is provided with a busbar 3, which is used to power the trolley. The trolley contacts the busbar 3 on the main track 2 / transfer track 5 to realize power supply, and then the moving motor 11 is operated to move the trolley.

[0030] The self-propelled trolley includes a trolley body 10, which is equipped with a travel motor 11 and travel-limiting wheels 12. The travel-limiting wheels 12 are in rolling engagement with the main track 2 and the variable track 5. The travel motor 11 drives the travel-limiting wheels 12 to rotate, thereby driving the self-propelled trolley. A downwardly extending rigid boom 13 is mounted on the trolley body 10, and an automatic height adjustment hoist is mounted on the rigid boom 13.

[0031] The automatic height-adjusting sling includes a lifting motor 14 , a lifting sling 171 , a lifting platform 22 , a scissor-type jib 15 , a limiting sling 172 , a constant-force coil spring 18 and a top cover sling 16 .

[0032] The lifting motor 14 is installed on the trolley body 10, and the lifting platform 22 is installed on the rigid boom 13 and slides with it in the up and down directions; the lifting motor 14 is connected to the lifting rope 171, and the other end of the lifting rope 171 is connected to the lifting platform 22 to form a first-level lifting mechanism.

[0033] The upper end of the scissor-type boom 15 is connected to the lower end of the rigid boom 13, the lower end of the scissor-type boom 15 is connected to the top cover sling 16, the upper end of the constant force coil spring 18 is installed on the lifting platform 22, the lower end of the constant force coil spring 18 is connected to the upper end of the limiting sling 172, and the lower end of the limiting sling 172 is connected to the top cover sling 16, forming a secondary lifting mechanism.

[0034] A first position-adjustable limiter 19 is installed on the limiting sling 172, and a second limiter is provided on the lifting platform 22 or the rigid suspension rod 13. The first limiter and the second limiter form a limiting fit, thereby ensuring that the constant force coil spring 18 extends to a certain length when the top cover is lifted.

[0035] A roller is further provided at the lower portion of the scissor-type boom 15 , the outer edge of the roller being a V-groove surface, and the limiting sling 172 is installed in the V-groove, which can form a guide limit for the limiting sling 172 .

[0036] The PLC control system 20 senses the position and status of the spreader through the sensor 21 and controls the steps of the entire system operation.

[0037] The working principle of the present invention is as follows: During use, after the top cover welding is completed, the top cover automatic conveying system is started, the self-propelled trolley moves to the top of the top cover, and the top cover hoist 16 is lowered by the lifting motor 14, connecting the top cover hoist 16 to the top cover. Then the lifting motor 14 is used again to lift the top cover to complete the lifting. The mobile motor 11 drives the self-propelled trolley and the top cover forward to the vehicle body welding line. When they reach the designated position, the lifting motor 11 lowers the lifting rope 171, the scissor-type boom 15 descends, and the top cover is placed on the vehicle body. At this time, since the top cover hoist 16 no longer bears the weight of the top cover, the limit rope 172 automatically rises under the action of the constant force coil spring 18, and the lower part of the top cover hoist is higher than the upper part of the top cover hoist when the top cover is installed, meeting the transportation height requirement.

[0038] The trolley then continues along the main track. When it reaches the shifting track 5 at the end, the shifting cylinder 8 drives the shifting track 5 along the slide rail 4 until it is moved to the position of the other set of main tracks. The trolley then moves onto the other set of main tracks. When it reaches the end of the other set of main tracks, the shifting cylinder 8 here drives the shifting track 5 along the slide rail 4 until it is moved from the current main track to the original main track. The trolley then moves above the roof cover to lift the next roof cover.

[0039] The present invention can effectively solve the problem of insufficient space for the annular automatic spreader through the operation mode of changing tracks at both ends and automatically adjusting the spreader height, realizes automatic spreader transportation of the top cover, and solves the problems of high manual production cost, high labor intensity and potential safety hazards.

[0040] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0041] If words such as "first" and "second" are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, the above words have no special meaning.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

Claims

1. An automatic conveying system for small space roofs, characterized by: The system comprises two sets of parallel main rails located in the air, with shifting systems provided at both ends of the two sets of main rails. The shifting systems each comprise a shifting rail extending in a front-to-rear direction and a shifting drive mechanism. The shifting drive mechanism drives the shifting rail to shift and switch between the two sets of main rails. It also includes one or more self-propelled trolleys, which run on the main track / displacement track; an automatic height-adjusting spreader is connected under the self-propelled trolley, which is used to lift or lower the top cover.

2. The automatic conveying system for small space top covers according to claim 1, characterized in that: The shift drive mechanism includes shift cylinders arranged in the left and right directions, the piston ends of the shift cylinders are connected to moving seats, and the moving seats are connected to the shift track through a suspension device; It also includes a slide rail extending along the left and right directions, and the movable seat is slidably installed on the slide rail.

3. The automatic conveying system for small space roofs according to claim 2, characterized in that: A first limit block and a second limit block are respectively provided at the head and tail positions of the moving track of the moving seat. When the moving seat contacts the first limit block for a limit, the shift track docks with a group of main tracks. When the moving seat contacts the second limit block for a limit, the shift track docks with another group of main tracks.

4. The automatic conveying system for small space roofs according to claim 2, characterized in that: Limiting guard plates are respectively provided on the front and rear sides of the moving track of the displacement track. The limiting guard plates extend in the left and right directions and are located between the two sets of main tracks.

5. The automatic conveying system for small space roofs according to claim 1, characterized in that: The conveying direction of one set of main tracks is from front to back, and the conveying direction of the other set of main tracks is from back to front.

6. The automatic conveying system for small space top covers according to any one of claims 1 to 5, characterized in that: The self-propelled trolley includes a trolley main body, on which a moving motor and a travel limiting wheel are installed. The travel limiting wheel rolls with the main track / variable track, and the moving motor drives the travel limiting wheel to rotate, thereby driving the self-propelled trolley to move; a downward-extending rigid suspension rod is installed on the trolley main body, and the automatic height adjustment sling is installed on the rigid suspension rod.

7. The automatic conveying system for small space roofs according to claim 6, characterized in that: The automatic height-adjusting sling comprises a lifting motor, a lifting sling, a lifting platform, a scissor-type jib, a limit sling, a constant-force coil spring and a top cover sling; The lifting motor is installed on the trolley body, and the lifting platform is installed on the rigid boom and slides with it in the up and down directions; the lifting motor is connected to the lifting rope, and the other end of the lifting rope is connected to the lifting platform to form a first-level lifting mechanism; The upper end of the scissor-type boom is connected to the lower end of the rigid boom, the lower end of the scissor-type boom is connected to the top cover sling, the upper end of the constant force coil spring is installed on the lifting platform, the lower end of the constant force coil spring is connected to the upper end of the limiting sling, and the lower end of the limiting sling is connected to the top cover sling to form a secondary lifting mechanism.

8. The automatic conveying system for small space roofs according to claim 7, characterized in that: A first position-adjustable limiter is installed on the limit sling, and a second limiter is provided on the lifting platform or the rigid suspension rod. The first limiter and the second limiter form a limit fit.

9. The automatic conveying system for small space roofs according to claim 7, characterized in that: A roller is provided at the lower part of the scissor-type boom, the outer edge of the roller is a V-shaped groove surface, and the limiting sling is installed in the V-shaped groove.

10. The automatic conveying system for small space top covers according to claim 1, characterized in that: Also includes PLC control system.

Images