A suspended conveyor system for a production line

Abstract

The present application relates to the technical field of intelligent suspension conveying system, and particularly relates to a suspension conveying system for production line, which comprises a main track, a plurality of work station tracks and a plurality of hanging units, wherein the hanging unit comprises a suspender one, the top end of the suspender one is rotatably connected with a pulley, the bottom end of the suspender one is rotatably connected with a suspender two, the bottom end of the suspender two is rotatably connected with a hanging plate, and the hanging plate is provided with two hooks and two movable rods. In the present application, the limiting rail and the offset rod are arranged on the work station track of the main track, the suspender two is deflected outward under the extrusion of the offset rod, the hanging plate and the hung articles are automatically turned to the side of the work station, and are completely exposed to the operator. Meanwhile, due to the deflection of the suspender two, the hanging plate of the front hanging unit is dislocated with the hanging plate of the current hanging unit, the shielding and interference of adjacent articles are avoided, the operator can directly take and place the articles without turning sideways or moving other hanging units, and the work station operation efficiency and convenience are effectively improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent overhead conveyor systems, specifically an overhead conveyor system for production lines. Background Technology

[0002] Intelligent overhead conveyor systems are widely used in automated production lines in industries such as clothing, textiles, and light industry. Existing intelligent overhead conveyor systems are typically equipped with a main track, multiple workstation tracks, and suspended units that can circulate along the tracks. They can also be used in conjunction with an electrical control system through actuators such as loading gates, unloading gates, and elevators to achieve automatic diversion, workstation allocation, and flow control of the suspended units. These systems improve the automation level and material scheduling efficiency of the production line to a certain extent.

[0003] However, in existing intelligent overhead conveyor systems, when multiple hanging units are arranged sequentially on branch tracks, they generally rely on their own weight to slide, causing multiple hanging units to be squeezed together. Moreover, the orientation of the hanging plates and the items hung on the hanging units is often fixed, usually pointing in the direction of track extension. The target hanging unit is close to the hanging unit in front, so when it is necessary to pick up or unload the clothing, it is necessary to separate the two to reduce interference. This is especially true for repetitive and frequent operations on the production line, affecting the convenience of operation and work efficiency. In addition, the existing hanging units use a lever-type clamping method. Although the structure is simple, loading and unloading require manually opening the lever upwards to remove the clothing. Sometimes the lever will also lift the clothing, making single-handed loading and unloading operations not smooth and affecting efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a suspended conveyor system for production lines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A suspended conveyor system for a production line includes a main track and further includes... The suspension unit comprises several units, each including a first suspension rod, a pulley rotatably connected to the top of the first suspension rod, a second suspension rod rotatably connected to the bottom of the first suspension rod, a hanging plate rotatably connected to the bottom of the second suspension rod, two hooks and two movable rods mounted on the hanging plate, and a pressure plate fixed between the two movable rods, the pressure plate being used to press the hook ends of the hooks; Multiple workstation tracks are distributed around the main track. Each workstation track includes a support rail and a mounting frame. The mounting frame is used for external installation. A limit rail is installed above the support rail, and an offset rail is installed below the support rail. The support rail, limit rail, and offset rail are all fixedly connected to the mounting frame. A hoist is fixedly installed on one side of the mounting frame. The hoist is used to lift the hanging unit upward along the support rail. The offset rail is used to drive the second hanging rod to deflect outward. The limit rail is used to engage the upper edge of the pulley, so that when the pulley moves between the limit rail and the support rail, the first hanging rod remains vertical. A baffle is fixedly connected to one end of the offset rail. The baffle is used to block the second hanging rod when it bends between the first and second hanging rods. A loading gate is installed on one end of the main track corresponding to the support rail, and a unloading gate is installed on the other end of the main track corresponding to the support rail.

[0006] Furthermore, the height of the portion of the support rail extending from one end to the position below the hoist continuously decreases, and the middle position of the support rail is a straight section.

[0007] Furthermore, a locking assembly is installed between the first and second booms, which is used to lock the first and second booms together. A guide rod is provided above the other end of the offset rod, which is fixedly connected to the mounting bracket and is used to unlock the locking assembly.

[0008] Furthermore, the locking assembly includes a first sleeve and a second sleeve. The first sleeve is fixedly installed on one side of the bottom end of the first boom, and the top end of the second sleeve is fixedly installed on one side of the top end of the second boom. A downward pressure rod is slidably inserted into the first sleeve, and a pin is slidably inserted into the second sleeve. A through hole for the pin is opened at the bottom end of the first sleeve. Both the first and second sleeves are equipped with a return spring. The return spring is used to drive the corresponding downward pressure rod and pin to return to their original positions. The guide rod is used to press the downward pressure rod downward so that the pin is disengaged from the first sleeve.

[0009] Furthermore, an outer push rod and an inner push rod are provided at one end of the offset rod, and both the outer push rod and the inner push rod are fixedly connected to the limiting rail rod.

[0010] Furthermore, the hanging plate has an inner cavity in the middle, and one end of the movable rod and the hook are slidably connected to the inner cavity of the hanging plate. The two movable rods correspond one-to-one with the two hooks. One end of the movable rod and the hook is provided with a rack. The movable rod and the corresponding hook are meshed with a gear. The gear is rotatably connected to the hanging plate. One end of the movable rod is fixedly connected with a compression spring.

[0011] Furthermore, the bottom end of the second suspension rod is fixedly connected to an eccentric wheel, the outer wall of the eccentric wheel is provided with a groove, one end of the groove is provided with an indentation, one end of the two compression springs is fixedly connected to a top plate, the top plate is slidably connected to the inner cavity of the hanging plate, and the top of the middle position of the top plate abuts against the groove.

[0012] Furthermore, a heart-shaped groove is provided above one end of each of the two hooks inside the hanging plate. A rocker arm is rotatably connected to the top of each hook, and one end of the rocker arm is slidably connected inside the heart-shaped groove.

[0013] Furthermore, one end of the limiting rail is provided with a movable rail, and a deflection limiting component is provided above the movable rail. The deflection limiting component is fixedly installed between the movable rail and the mounting bracket, and the deflection limiting component is used to limit the deflection amplitude of the movable rail. Furthermore, the deflection limiting assembly includes two arc rails, with a sliding rod slidably connected to the inner wall of each arc rail. One end of the sliding rod is fixedly connected to the movable rail. A sliding seat is fixedly connected between the two arc rails, and an arc plate is slidably connected between the two sliding seats. A heart-shaped groove is formed on one side of the inner wall of the arc plate. A spring telescopic rod is fixedly connected to the other end of the sliding rod. One end of the spring telescopic rod is slidably connected to the heart-shaped groove. An arc-shaped spring is fixedly connected between the inner wall of one end of the arc rail and the other end of the sliding rod. The arc rail is coaxial with the straight rod portion at the middle position of the bearing rail.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting limit rods and offset rods on the main track's workstation rails, when the hanging unit enters the workstation, the locking component is unlocked by the guide rod, and the second hanging rod deflects outward under the pressure of the offset rod, causing the hanging plate and the hung items to automatically turn to the side of the workstation, fully exposing them to the operator. Simultaneously, due to the deflection of the second hanging rod, the hanging plate of the preceding hanging unit is misaligned with the hanging plate of the current hanging unit, avoiding obstruction and interference from adjacent items. Operators can directly pick up and place items without having to turn sideways or move other hanging units, effectively improving workstation efficiency and convenience. 2. By setting up the movable rod and hook, a heart-shaped groove and a spring telescopic rod are set between the movable rail and the deflection limit component. Together with the heart-shaped groove and the rocker arm, the operator must pull down once (to release the clamp and take out the item) before use. After the processed item is hung, pull down again so that the second and first lifting rods can return to a taut state and pass over the baffle to continue forward. This prevents the hanging unit from sliding away from the work position before the loading is completed. In addition, apart from the two pull-down actions during loading and unloading, no additional actions are required from the user. The operation is simple, easy to operate with one hand, and convenient to use. 3. Through the linkage of the eccentric wheel, top plate, compression spring, and gears, when the second boom is in a vertical state (during the conveying process), the top plate engages with the concave part of the eccentric wheel groove, the compression spring is in a compressed state, and the pressure plate presses firmly against the end of the hook, forming a reliable clamping grip on the item and effectively preventing slippage due to vibration or impact. When the second boom deflects outward (entering the working position), the top plate slides into the non-concave part of the groove, the clamping force automatically decreases, and the heart-shaped groove 2 cooperates with the rocker arm to keep the hook open after the first pull-down, allowing the operator to easily remove the old item and hang the new item without manually opening the clamp, making the operation more convenient. The hook clamping force is automatically adjusted according to the boom state, making loading and unloading labor-saving and preventing slippage during the conveying process. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the workstation track structure in this invention; Figure 3 This is a schematic diagram of the workstation track structure in this invention; Figure 4 This is a schematic diagram of the bent state of the first and second suspension rods in this invention; Figure 5 This is a schematic diagram of the taut state of the first and second suspension rods in this invention; Figure 6 This is a schematic diagram showing the positions of the offset rod and the bearing rail rod in this invention; Figure 7 This is a schematic diagram showing the positions of the guide rod and the limiting rail rod in this invention; Figure 8 yes Figure 3 Enlarged view of a portion at point A; Figure 9 This is a schematic diagram of the hanging unit structure in this invention; Figure 10 This is a schematic diagram of the internal structure of the hanging plate in this invention; Figure 11 This is a schematic diagram of the hook and pressure plate in the released clamping state in this invention; Figure 12 This is a schematic diagram of the locking component structure in this invention; Figure 13 This is a schematic diagram of the internal structure of the arc track in this invention; Figure 14 This is a schematic diagram of the arc plate structure in this invention.

[0016] In the diagram: 100, Main track; 110, Unloading gate; 120, Loading gate; 200, Station track; 210, Bearing rail; 220, Limiting rail; 221, Movable rail; 230, Offset rod; 231, Baffle; 240, Guide rod; 250, Inner push rod; 260, Outer push rod; 270, Hoist; 280, Deflection limiting assembly; 281, Arc plate; 282, Heart-shaped groove one; 283, Slide seat; 284, Spring telescopic rod; 285, Arc rail; 286, Slide rod; 287, Arc... 290. Heart-shaped spring; 300. Mounting bracket; 310. Hanging unit; 320. Hanging rod one; 330. Pulley; 331. Locking assembly; 332. Sleeve one; 333. Lower pressure rod; 334. Sleeve two; 340. Pin; 350. Hanging rod two; 351. Eccentric wheel; 352. Groove; 353. Concave part; 360. Hanging plate; 361. Top plate; 362. Compression spring; 363. Gear; 364. Heart-shaped groove two; 370. Hook; 371. Rocker arm; 380. Movable rod; 381. Pressure plate. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1 to 8In this embodiment of the invention, a suspended conveyor system for a production line includes a main track 100, multiple station tracks 200, and several hanging units 300. Each hanging unit 300 includes a first hanging rod 310, with a pulley 320 rotatably connected to its top end and a second hanging rod 340 rotatably connected to its bottom end. A hanging plate 360 ​​is rotatably connected to the bottom end of the second hanging rod 340. Two hooks 370 and two movable rods 380 are mounted on the hanging plate 360. A pressure plate 381 is fixed between the two movable rods 380, and the pressure plate 381 is used to press the hook ends of the hooks 370. Multiple station tracks 200 are distributed around the main track 100. Each station track 200 includes a support rail 210 and a mounting frame 290. The mounting frame 290 is used for external installation. A limiting rail 220 is provided above the bearing rail 210, and an offset rod 230 is provided below the bearing rail 210. The bearing rail 210, the limiting rail 220, and the offset rod 230 are all fixedly connected to the mounting frame 290. A hoist 270 is fixedly installed on one side of the mounting frame 290. The hoist 270 is used to lift the hanging unit 300 upward along the bearing rail 210. The offset rod 230 is used to drive the second hanging rod 340 to deflect outward. The limiting rail 220 is used to engage the upper edge of the pulley 320 so that when the pulley 320 moves between the limiting rail 220 and the bearing rail 210, the first hanging rod 310 remains vertical. A baffle 231 is fixedly connected to one end of the offset rod 230. The baffle 231 is used to block the second hanging rod 340 when it bends between the first hanging rod 310 and the second hanging rod 340. A loading gate 120 is installed on one end of the main track 100 corresponding to the bearing rail 210, and a unloading gate 110 is installed on the other end of the main track 100 corresponding to the bearing rail 210. The height of the portion of the bearing rail 210 from one end to the position below the hoist 270 decreases continuously, and the middle position of the bearing rail 210 is a straight section. A locking assembly 330 is installed between the first hoist 310 and the second hoist 340. The locking assembly 330 is used to lock the first hoist 310 and the second hoist 340. The locking mechanism is located between 40 and 40. A guide rod 240 is provided above the other end of the offset rod 230. The guide rod 240 is fixedly connected to the mounting bracket 290. The guide rod 240 is used to unlock the locking component 330. A movable rail 221 is provided at one end of the limit rail 220. A deflection limit component 280 is provided above the movable rail 221. The deflection limit component 280 is fixedly installed between the mounting bracket 290 and the deflection limit component 280 is used to limit the deflection amplitude of the movable rail 221.

[0019] Specifically, when the hanging unit 300 moves on the main track 100, the loading gate 120 transfers the hanging unit 300 to the bearing rail 210. The pulley 320 slides along the bearing rail 210. During the movement, the pulley 320 first enters between the limiting rail 220 and the bearing rail 210, thereby keeping the first lifting rod 310 in a vertical position (preventing the first lifting rod 310 from deflecting outward). Then, the locking assembly 330 passes under the guide rod 240. 240 releases the locking assembly 330, allowing the second lifting rod 340 to rotate around the bottom of the first lifting rod 310. The second lifting rod 340 then contacts the offset rod 230, and the offset rod 230 presses outwards against the second lifting rod 340, causing it to deflect outwards. When the pulley 320 moves to the other end of the movable rail 221, the second lifting rod 340 is stopped by the baffle 231, causing the hanging plate 360 ​​containing the clothing to face the side of the workstation for easy access. The worker removes the fabric from hook 370 and, while hanging the fabric back on hook 370, pulls the fabric or hook 370 downwards. This causes the first hanging rod 310 to deflect via the second hanging rod 340, returning the first hanging rod 310 and the second hanging rod 340 to a straight position. The locking assembly 330 resets, locking the first hanging rod 310 and the second hanging rod 340 together. At this point, although the second hanging rod 340 is still resting on the offset rod 230, the change in the deflection angle of the second hanging rod 340 allows the hanging rod to... The second 340 is able to pass the baffle 231, and the hanging unit 300 continues to move forward along the bearing rail 210 under the action of gravity. The second 340 loses the compression of the offset rod 230 and returns to the center under the action of gravity, realizing the complete misalignment between the foremost hanging plate 360 ​​with unprocessed clothing on the bearing rail 210 and the hanging plate 360 ​​with processed clothing in front, so that the unprocessed clothing is fully exposed to the work position, which is convenient for loading and unloading and reduces the interference of clothing on other hanging plates 360.

[0020] Example 1 like Figures 6 to 12 As shown, in this embodiment, the locking assembly 330 includes a first sleeve 331 and a second sleeve 333. The first sleeve 331 is fixedly installed on one side of the bottom end of the first lifting rod 310, and the top end of the second sleeve 333 is fixedly installed on one side of the top end of the second lifting rod 340. A pressing rod 332 is slidably inserted into the first sleeve 331, and a pin 334 is slidably inserted into the second sleeve 333. A through hole for the pin 334 is opened at the bottom end of the first sleeve 331. A return spring is installed in both the first sleeve 331 and the second sleeve 333. The return spring is used to drive the corresponding pressing rod 332 and pin 334 to return to their original positions. The guide rod 240 is used to press the pressing rod 332 downward so that the pin 334 is disengaged from the first sleeve 331. An outer push rod 260 and an inner push rod 250 are provided at one end of the offset rod 230. The outer push rod 260 and the inner push rod 250 are both fixedly connected to the limiting rail rod 220.

[0021] In this embodiment, initially, the top end of pin 334 is inserted into sleeve 331. When locking assembly 330 moves to the position of guide rod 240, as the hanging unit 300 advances on the bearing rail 210, guide rod 240 presses down on pressing rod 332, causing pressing rod 332 to press down on pin 334, causing pin 334 to exit from sleeve 331. At this time, the plane of pin 334 in contact with sleeve 331 is flush with the top plane of locking assembly 330, allowing locking assembly 330 to release the lock on hanging rod 340. Hanging rod 340 can then deflect freely, facilitating subsequent offset rod 230 to drive hanging rod 340 to deflect outward. Through the setting of inner push rod 250 and outer push rod 260, the swing of hanging unit 300 after processing is limited, reducing the left and right swaying of hanging unit 300, and forcibly returning hanging unit 300 to its correct position.

[0022] Example 2 Based on Example 1, in order to further facilitate users in loading and unloading clothing.

[0023] like Figures 8 to 14 As shown, in this embodiment, an inner cavity is provided in the middle of the hanging plate 360. One end of the movable rod 380 and the hook 370 are slidably connected to the inner cavity of the hanging plate 360. The two movable rods 380 correspond one-to-one with the two hooks 370. One end of the movable rod 380 and the hook 370 are provided with a rack portion. A gear 363 meshes and drives between the movable rod 380 and the corresponding hook 370. The gear 363 is rotatably connected to the hanging plate 360. A compression spring 362 is fixedly connected to one end of the movable rod 380. An eccentric wheel 350 is fixedly connected to the bottom end of the second hanging rod 340. The outer wall of the eccentric wheel 350 is open. A groove 351 is provided, and one end of the groove 351 has an indentation 352. One end of two compression springs 362 is fixedly connected to a top plate 361. The top plate 361 is slidably connected to the inner cavity of the hanging plate 360. The top of the middle position of the top plate 361 abuts against the groove 351. The inside of the hanging plate 360 ​​is provided with a heart-shaped groove 364 above one end of two hooks 370. The top of the hooks 370 is rotatably connected to a rocker arm 371. One end of the rocker arm 371 is slidably connected in the heart-shaped groove 364. The rocker arm 371 has a certain elasticity, so that one end of the rocker arm 371 slides in the heart-shaped groove 364.

[0024] In practice, when the second hanging rod 340 is in a vertical position, the top of the top plate 361 is engaged with the concave portion 352, causing the compression spring 362 to be in a compressed state. At this time, the pressure plate 381 presses tightly against the end of the hook 370, thereby clamping the fabric and preventing it from slipping during the movement of the hanging unit 300. When the second hanging rod 340 deflects outward, it rotates, while the hanging plate 360 ​​tends to remain vertical under the weight of the fabric and itself. This causes the top of the top plate 361 to slide into the groove 351 at the end away from the concave portion 352. This relaxes the compression on the compression spring 362, causing the compression spring 362 to lengthen. Consequently, the compression spring 362 relaxes its downward compression on the movable rod 380. Through the setting of the gear 363, the movable rod 380 and the hook 370 are linked in opposite directions. The compression spring 362 relaxes its downward compression on the movable rod 380, causing the clamping force of the pressure plate 381 and the hook 370 on the fabric to decrease (but the pressure plate 381 and the hook 370 are still in the state of clamping the fabric). At this time, one end of the rocker arm 371 is located at the tip of the heart-shaped groove 364. When removing the fabric, the user simply pulls the fabric or hook 370 downwards, causing the hook 370 to move down relative to the hanging plate 360. Upon releasing the pull, the compression spring 362 pushes the movable rod 380 downwards, causing the hook 370 to move upwards. At this point, one end of the rocker arm 371 moves to the center of the heart-shaped groove 364, locking the hook 370 halfway up. This maintains a gap between the pressure plate 381 and the end of the hook 370, facilitating the subsequent hanging of the fabric directly onto the hook 370. When hanging the processed fabric onto the hook 370, a slight downward pull followed by release causes the hook 370 to move down and then up relative to the hanging plate 360. The rocker arm 371 slides along the heart-shaped groove 364 to the tip of the heart, and the pressure plate 381 and hook 370 return to their clamping position on the fabric. The user finds loading and unloading the fabric simple. Simply pull down when loading. When loading, hang the fabric on the hook 370 and pull down again. The side of the hanging plate 360 ​​facing the workstation is fully exposed, and no other hanging plates 360 will interfere with the loading and unloading of the fabric, making it convenient for users. When the second hanging rod 340 passes the baffle 231 and returns to the vertical position, the top of the top plate 361 re-engages into the recess 352, making the compression spring 362 exert a greater downward force than when unloading, thereby increasing the clamping force of the hook 370 and the pressure plate 381 on the fabric and preventing the fabric from falling off. At the same time, the end of the hook 370 is made of plastic or metal and has a certain degree of elasticity, which allows the end of the hook 370 to deform downward when pressed to adapt to the thickness of the fabric. This avoids the situation where, when the fabric is thick, after the hook 370 and the pressure plate 381 are clamped, one end of the rocker arm 371 cannot move up to the tip of the heart-shaped groove 364.

[0025] Example 3 Based on Embodiment 2, when the first pull-down hook 370 unloads the fabric, it pulls the second hanging rod 340 to deflect around the offset rod 230, causing the first hanging rod 310 and the second hanging rod 340 to become taut, resulting in the locking assembly 330 locking. This further causes the second hanging rod 340 to easily pass over the baffle 231, causing the hanging unit 300 to slide forward before the second pull-down loading. To avoid the above situation, the hook 370 can only pass through the baffle 231 after two pull-downs.

[0026] like Figures 4 to 11 As shown, in this embodiment, the deflection limiting component 280 includes two arc rails 285. A slide rod 286 is slidably connected to the inner wall of the arc rail 285. One end of the slide rod 286 is fixedly connected to the movable rail 221. A slide seat 283 is fixedly connected between the two arc rails 285. An arc plate 281 is slidably connected between the two slide seats 283. A heart-shaped groove 282 is opened on one side of the inner wall of the arc plate 281. A spring telescopic rod 284 is fixedly connected to the other end of the slide rod 286. One end of the spring telescopic rod 284 is slidably connected to the heart-shaped groove 282. An arc spring 287 is fixedly connected between the inner wall of one end of the arc rail 285 and the other end of the slide rod 286. The arc rail 285 is coaxial with the straight rod part at the middle position of the bearing rail 210.

[0027] Specifically, when pulley 320 moves to the position of movable rail 221, the elastic force of arc spring 287 counteracts the tendency of hanger 2 340 to deflect hanger 1 310, keeping hanger 1 310 vertical. At this time, spring telescopic rod 284 is located at the dome position of the heart-shaped groove 282. When hook 370 is pulled down for the first time, hook 370 moves hanging plate 360 ​​and hanger 2 340, causing hanger 2 340 to deflect hanger 1 310 around bearing rail 210, thereby driving movable rail 221 and slide rod 286. The spring telescopic rod 284 moves to the heart position on the heart-shaped groove 282. The slide rod 286 and the movable rail 221 are stuck and cannot continue to deflect. At this time, the first lifting rod 310 and the second lifting rod 340 are still in a bent state. When the release hook 370 is pulled down for the first time, the movable rail 221 and the slide rod 286 rebound and reset under the action of the arc rail 285. The spring telescopic rod 284 moves to the other dome position of the heart shape in the heart-shaped groove 282. The movement of the spring telescopic rod 284 is adapted by the sliding of the arc plate 281 on the slide block 283. When the hook 370 is pulled down for the second time, the second lifting rod 340 deflects, causing the first lifting rod 310 to deflect as well. This keeps the first lifting rod 310 and the second lifting rod 340 taut. The spring telescopic rod 284 moves to the tip of the heart-shaped groove 282, and the pin 334 inserts into the sleeve 331, thus locking the first lifting rod 310 and the second lifting rod 340 together. When the hook is pulled down for the second time and released, the first lifting rod 310 and the second lifting rod 340 remain taut. The baffle 231 is misaligned with the second lifting rod 340, and the suspension unit 300 slides forward along the bearing rail 210 under its own weight. Once the second lifting rod 340 disengages from the offset rod 230, the entire suspension unit 300... After the pulley 320 disengages from the movable rail 221, the movable rail 221 returns to its original position under the action of the arc spring 287. The spring telescopic rod 284 also returns to the dome position of the heart-shaped groove 282. The next hanging unit 300 automatically slides forward to fill the gap after the previous hanging unit 300 disengages from the offset rod 230. It should be noted that when the movable rail 221 deflects to its maximum angle, the gap between the movable rail 221 and the limiting rail 220 is smaller than the wall thickness on the side of the pulley 320. This prevents the pulley 320 in the next hanging unit 300 from getting stuck between the movable rail 221 and the limiting rail 220 before the movable rail 221 has returned to its original position.

[0028] In this invention, both the first heart-shaped groove 282 and the second heart-shaped groove 364 are provided with unidirectional steps. This is an existing structure in the existing push-push mechanism, which allows one end of the rocker arm 371 and the first heart-shaped groove 282 to slide unidirectionally along the corresponding heart-shaped groove. The transfer of the hanging unit 300 between the bearing rail 210 and the main rail 100 is realized by the unloading gate 110 and the loading gate 120. The lifting machine 270 drives the hanging unit 300 to climb the height on the bearing rail 210. The unloading gate 110, the loading gate 120 and the lifting machine 270 are all existing technologies, and their specific working principles will not be described in detail.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A suspended conveying system for a production line, comprising a main track (100), characterized in that, Also includes There are several hanging units (300). Each hanging unit (300) includes a first hanging rod (310). A pulley (320) is rotatably connected to the top of the first hanging rod (310). A second hanging rod (340) is rotatably connected to the bottom of the first hanging rod (310). A hanging plate (360) is rotatably connected to the bottom of the second hanging rod (340). Two hooks (370) and two movable rods (380) are installed on the hanging plate (360). A pressure plate (381) is fixed between the two movable rods (380). There are multiple workstation tracks (200). Each workstation track (200) includes a support rail (210) and a mounting frame (290). The mounting frame (290) is used for external installation. A limiting rail (220) is provided above the support rail (210), and an offset rod (230) is provided below the support rail (210). The support rail (210), the limiting rail (220), and the offset rod (230) are all fixedly connected to the mounting frame (290). A hoist (270) is fixedly installed on one side of the mounting frame (290). A baffle (231) is fixedly connected to one end of the offset rod (230). The baffle (231) is used to block the second hoist (340) when it bends between the first hoist (310) and the second hoist (340).

2. The overhead conveyor system for a production line according to claim 1, characterized in that, The hoist (270) is used to lift the hanging unit (300) upward along the bearing rail (210). A loading gate (120) is installed on one end of the main track (100) corresponding to the bearing rail (210), and a unloading gate (110) is installed on the other end of the main track (100) corresponding to the bearing rail (210). The offset rod (230) is used to squeeze and cause the second hanging rod (340) to deflect outward. The limiting rail (220) is used to engage the upper edge of the pulley (320). When the pulley (320) moves between the limiting rail (220) and the bearing rail (210), the first hanging rod (310) remains vertical. The height of the part of the bearing rail (210) from one end to the position below the hoist (270) continuously decreases, and the middle position of the bearing rail (210) is a straight rod.

3. The overhead conveyor system for a production line according to claim 2, characterized in that, A locking assembly (330) is installed between the first (310) and the second (340) of the lifting rod. The locking assembly (330) is used to lock the first (310) and the second (340) of the lifting rod. A guide rod (240) is provided above the other end of the offset rod (230). The guide rod (240) is fixedly connected to the mounting bracket (290). The guide rod (240) is used to unlock the locking assembly (330).

4. The overhead conveyor system for a production line according to claim 3, characterized in that, The locking assembly (330) includes a first sleeve (331) and a second sleeve (333). The first sleeve (331) is fixedly installed on one side of the bottom end of the first rod (310). The top end of the second sleeve (333) is fixedly installed on one side of the top end of the second rod (340). A downward pressure rod (332) is slidably inserted into the first sleeve (331). A pin (334) is slidably inserted into the second sleeve (333). A through hole for the pin (334) is opened at the bottom end of the first sleeve (331). A return spring is installed in both the first sleeve (331) and the second sleeve (333). The return spring is used to drive the corresponding downward pressure rod (332) and the pin (334) to return to their original positions. The guide rod (240) is used to press the downward pressure rod (332) downward so that the pin (334) is disengaged from the first sleeve (331).

5. The overhead conveyor system for a production line according to claim 4, characterized in that, An outer push rod (260) and an inner push rod (250) are provided at one end of the offset rod (230), and the outer push rod (260) and the inner push rod (250) are fixedly connected to the limiting rail rod (220).

6. The overhead conveyor system for a production line according to claim 3, characterized in that, The hanging plate (360) has an inner cavity in the middle. One end of the movable rod (380) and the hook (370) are slidably connected to the inner cavity of the hanging plate (360). The two movable rods (380) correspond one-to-one with the two hooks (370). One end of the movable rod (380) and the hook (370) is provided with a rack. The movable rod (380) and the corresponding hook (370) are meshed and driven by a gear (363). The gear (363) is rotatably connected to the hanging plate (360). One end of the movable rod (380) is fixedly connected to a compression spring (362).

7. The overhead conveyor system for a production line according to claim 6, characterized in that, An eccentric wheel (350) is fixedly connected to the bottom end of the second rod (340). A groove (351) is provided on the outer side wall of the eccentric wheel (350). One end of the groove (351) is provided with a concave part (352). One end of the two compression springs (362) is fixedly connected to a top plate (361). The top plate (361) is slidably connected to the inner cavity of the hanging plate (360). The top end of the top plate (361) at the middle position abuts against the groove (351).

8. The overhead conveyor system for a production line according to claim 7, characterized in that, The hanging plate (360) has a heart-shaped groove (364) above one end of each of the two hooks (370). The top of each hook (370) is rotatably connected to a rocker arm (371), and one end of the rocker arm (371) is slidably connected in the heart-shaped groove (364).

9. A suspended conveyor system for a production line according to claim 7, characterized in that, One end of the limiting rail (220) is provided with a movable rail (221), and a deflection limiting component (280) is provided above the movable rail (221). The deflection limiting component (280) is fixedly installed between the deflection limiting component (280) and the mounting frame (290). The deflection limiting component (280) is used to limit the deflection amplitude of the movable rail (221).

10. A suspended conveyor system for a production line according to claim 9, characterized in that, The deflection limiting assembly (280) includes two arc rails (285). A slide rod (286) is slidably connected to the inner wall of the arc rail (285). One end of the slide rod (286) is fixedly connected to the movable rail (221). A slide seat (283) is fixedly connected between the two arc rails (285). An arc plate (281) is slidably connected between the two slide seats (283). A heart-shaped groove (282) is opened on one side of the inner wall of the arc plate (281). A spring telescopic rod (284) is fixedly connected to the other end of the slide rod (286). One end of the spring telescopic rod (284) is slidably connected to the heart-shaped groove (282). An arc spring (287) is fixedly connected between the inner wall of one end of the arc rail (285) and the other end of the slide rod (286). The arc rail (285) is coaxial with the straight rod part at the middle position of the bearing rail (210).

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