Circulating conveying system for forklift assembling

Abstract

The circulating conveying system for forklift assembling comprises a conveying platform, a plurality of trolley platforms are arranged on the conveying platform, and a traction platform is arranged on the outer side of the conveying platform and used for limiting the trolley platforms on the conveying platform; the conveying platform comprises a circulating plate, a power plate chain which moves relative to the circulating plate is arranged on the conveying platform, and an overground track is mounted on the circulating plate; the traction platform comprises a guide rail which is arranged on the outer side of the conveying platform, arranged along the moving path of the power plate chain and used for guiding and limiting the trolley platform when the trolley platform is located below the power plate chain. The circulating type conveying device is simple in structure, circulating type automatic conveying of the forklift assembly line body is achieved through cooperative use of the trolley platform, the circulating plate, the power plate chain, the ground rail and the guide rail, the manual participation degree is effectively reduced through the structure, and the labor intensity of operators is remarkably relieved.

Description

Technical Field

[0001] The invention relates to the technical field of forklift assembly, in particular to a circulating conveying system for forklift assembly. Background Art

[0002] During the assembly process of the forklift assembly line, it is usually necessary to place the forklift body on a line trolley for transportation. In the prior art, the forklift body is generally supported by two line trolleys in the front and rear, and moves forward with them to complete each assembly process. However, the line trolleys currently used are mostly unpowered platform structures. After each assembly process is completed, it is necessary to rely on manual labor to push the trolley to the next workstation, and the assembly efficiency is low. In addition, after the forklift completes the overall assembly and goes off the line, the line trolleys need to be manually pulled back one by one from the end of the production line to the end of the line for recycling. This method of relying on manual operation is not only labor-intensive and inefficient, but also easily affects the assembly rhythm due to human factors, which is not conducive to achieving automated and continuous production needs. For this reason, a circulating conveying system for forklift assembly is proposed. Summary of the Invention

[0003] The object of the present invention is to provide a circulating conveying system for forklift assembly to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a circulating conveying system for forklift assembly, comprising a conveying platform on which a plurality of trolley platforms are arranged, a traction platform is provided on the outside of the conveying platform, for limiting the trolley platform on the conveying platform; the conveying platform comprises a circulating plate on which a power plate chain is provided for relative movement relative to the circulating plate, and a ground track is installed on the circulating plate; the traction platform comprises a guide rail, which is provided on the outside of the conveying platform and arranged along the moving path of the power plate chain, for guiding and limiting the trolley platform when the trolley platform is located below the power plate chain.

[0005] As a further solution of the present invention: the trolley platform includes a frame and an axle arranged at the bottom of the frame, and the two ends of the axle are respectively fixedly installed with ground wheels and underground wheels. A sleeve is also installed at the bottom of the frame, and a guide assembly connected to the power plate chain is installed in the sleeve, and a pin assembly for fixing the guide assembly is installed on the sleeve.

[0006] As a further solution of the present invention: the guide assembly includes a guide sleeve slidably installed inside the sleeve, a guide column is movably installed inside the guide sleeve, the end of the guide column passes through the guide sleeve and is fixedly connected to a baffle, the outer circumference of the guide column is fixedly installed with a limit sleeve, the outer circumference of the guide column is provided with a spring located in the guide sleeve, and the two ends of the spring are respectively connected to the limit sleeve and the inner wall of the guide sleeve.

[0007] As a further solution of the present invention: an upper limit hole and a lower limit hole are formed on the outer surface of the sleeve, and a limit groove for the latch assembly to move is formed between the upper limit hole and the lower limit hole.

[0008] As a further solution of the present invention: the latch assembly includes a latch sleeve arranged on the sleeve, a latch shaft is installed inside the latch sleeve, a fixing sleeve is provided inside the latch sleeve, and the outer circumference of the latch shaft is sleeved with a latch spring located inside the latch sleeve, one end of the latch spring is connected to the fixing sleeve, and the other end is connected to the inner wall of the latch sleeve, and a clamping block is installed at the end of the latch sleeve.

[0009] As a further solution of the present invention: the outer diameter of the latch sleeve is adapted to the slot width of the limiting slot, and the outer diameter of the clamping block is adapted to the inner diameters of the upper limit hole and the lower limit hole respectively.

[0010] As a further solution of the present invention: it also includes a downline platform, and the top of the downline platform is higher than the conveying platform.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This application realizes the cyclic automatic transportation of the forklift assembly line through the coordinated use of the trolley platform with the circulation plate, power plate chain, ground track and guide rail. This structure effectively reduces the degree of manual participation and significantly reduces the labor intensity of the operators. It avoids the situation where the line trolleys need to be manually pulled back from the end of the production line to the head of the line after the forklift completes the overall assembly and goes off the line. It solves the problems of high labor intensity and low operating efficiency brought about by traditional reliance on manual operation, and at the same time reduces the adverse effects of human factors on the assembly rhythm, thereby improving the overall production automation level and operational stability.

[0013] This application achieves flexible adjustment of the trolley platform's position on the power plate chain through the coordination of the sleeve, guide assembly, and latch assembly provided on the trolley platform. This structure facilitates rapid adjustment of the spacing between multiple trolley platforms, thereby adapting to the assembly requirements of different forklift models, improving the system's versatility and applicability, and further enhancing assembly efficiency and flexible production capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the operation of the circulating conveying system of the present invention;

[0015] Figure 2 This is a schematic diagram of a forklift offline of the present invention;

[0016] Figure 3 This is a front view of the forklift off-line of the present invention;

[0017] Figure 4 This is a schematic side view of the forklift off-line of the present invention;

[0018] Figure 5 This is a schematic diagram of the trolley platform of the present invention;

[0019] Figure 6 It is a schematic diagram of the sleeve of the present invention;

[0020] Figure 7 is a schematic diagram of the guide assembly of the present invention;

[0021] Figure 8 is a schematic diagram of the latch assembly of the present invention;

[0022] Figure 9 is a schematic cross-sectional view of the sleeve, guide assembly and latch assembly of the present invention;

[0023] In the figure: 1. Conveying platform; 11. Circulating plate; 12. Power plate chain; 13. Ground track; 2. Traction platform; 3. Trolley platform; 31. Frame; 32. Axle; 33. Ground wheel; 34. Underground wheel; 35. Sleeve; 351. Upper limit hole; 352. Lower limit hole; 353. Limit groove; 36. Guide assembly; 361. Guide sleeve; 362. Guide column; 363. Block; 364. Limit sleeve; 365. Spring; 37. Latch assembly; 371. Latch sleeve; 372. Latch shaft; 373. Fixing sleeve; 374. Latch spring; 375. Block; 4. Offline platform; 5. Forklift. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-9 In an embodiment of the present invention, a circulating conveying system for forklift assembly includes a conveying platform 1, on which a plurality of trolley platforms 3 are arranged, and a traction platform 2 is provided on the outside of the conveying platform 1 for restricting the trolley platform 3 on the conveying platform 1; the conveying platform 1 includes a circulating plate 11, on which a power plate chain 12 is provided for relative movement relative to the circulating plate 11, and a ground track 13 is installed on the circulating plate 11; the traction platform 2 includes a guide rail, which is provided on the outside of the conveying platform 1 and arranged along the moving path of the power plate chain 12, for guiding and limiting the trolley platform 3 when the trolley platform 3 is located below the power plate chain 12.

[0026] Specifically, the conveying platform 1 includes an upper conveying section and a lower conveying section, which are connected by two arc sections to form a closed loop structure. The closed loop is surrounded by the upper conveying section, the lower conveying section and the two arc sections, so that multiple trolley platforms 3 can circulate on the conveying platform 1. When the trolley platform 3 runs on the upper conveying section, a forklift 5 is carried on it; when the trolley platform 3 enters the arc section along the conveying path and transitions to the lower conveying section, the forklift 5 starts to go offline. During this process, the wheels of the forklift 5 gradually contact the surface of the offline platform 4. As the trolley platform 3 continues to run along the arc section and finally enters the lower conveying section, the trolley platform 3 and the forklift 5 are gradually separated, thereby completing the forklift 5 going offline. The two arc sections correspond to the online process of the forklift 5 going up to the lower conveying section and the offline process from the upper conveying section to the lower conveying section.

[0027] When the forklift 5 is on the line, the manual operation controller makes the line pause briefly, and the forklift frame is hoisted onto the trolley platform 3. After it is firmly placed, the line operation switch is turned on, and a series of accessories including the front wheels and rear wheels are assembled in sequence on the line according to the work station sequence. The specific installation sequence is determined according to the actual situation on site, and no further details are given here. When the forklift 5 is fully assembled, the trolley platform 3 sends the forklift 5 to the offline platform 4, and then the staff drives the forklift 5 away from the offline platform 4.

[0028] The traction platform 2 is arranged along the outer side of the conveying platform 1. The traction platform 2 is a guide rail, and the support of the guide rail is the existing technology, which will not be described in detail here. It is mainly distributed on the lower conveying section and the two arc sections, and its two ends extend to the connection between the upper conveying section and the two arc sections respectively. The area where the lower conveying section and the two arc sections are located is the area where the trolley platform 3 is in a "free from gravity" state, that is, at this stage, if the trolley platform 3 is not restricted, it will fall from the conveying platform 1 due to loss of support. When the trolley platform 3 enters this area, the traction platform 2 can restrict it and use a limited path consistent with the path of the conveying platform 1 to ensure that the trolley platform 3 can smoothly return from the lower conveying section to the upper conveying section for a new round of forklift 5 transportation. When the trolley platform 3 is located in the upper conveying section, it can be stably connected to the conveying platform 1 under the action of gravity. At this time, since the traction platform 2 is not set on the upper conveying section, there is no external restraint between the trolley platforms 3, which is convenient for the staff to adjust the distance between the trolley platforms 3 as needed, thereby realizing adaptive transportation of forklifts 5 of different models.

[0029] The circulation plate 11 is a closed-loop structure, and a groove body extending circumferentially and forming a closed loop is provided on its outer peripheral surface, and a power plate chain 12 is provided in the groove body. A driving device is installed inside the circulation plate 11, and the device is connected to the power plate chain 12 to drive the power plate chain 12 to move relative to the circulation plate 11 in the groove body. In addition, a ground track 13 is provided on the outer peripheral surface of the circulation plate 11, and the ground track 13 maintains contact with the trolley platform 3. When the trolley platform 3 is located in the upper conveying section, its gravity mainly acts on the circulation plate 11 and the power plate chain 12. The ground track 13 not only limits the trolley platform 3, but also effectively reduces the friction between the trolley platform 3 and the circulation plate 11, thereby ensuring the stability and smoothness of the trolley platform 3 running on the circulation plate 11.

[0030] Through the above scheme, the circulation plate 11 not only provides support for the power plate chain 12, but also provides a guide path for its operation. The power plate chain 12 can provide driving force for the movement of the trolley platform 3 during operation, and drive the trolley platform 3 to move synchronously during operation; at the same time, the guide rail is used to limit the trolley platform 3 under the power plate chain 12, preventing the trolley platform 3 from separating from the power plate chain 12 when it is in a "free from gravity" state, thereby ensuring that it can automatically return to the online position of the upper section of the forklift after completing the forklift offline, thereby realizing the continuity of the conveying process and meeting the needs of continuous production.

[0031] See also Figure 5 In one embodiment, in this embodiment, preferably, the trolley platform 3 includes a frame 31 and an axle 32 arranged at the bottom of the frame 31, and the two ends of the axle 32 are respectively fixedly installed with ground wheels 33 and underground wheels 34. A sleeve 35 is also installed at the bottom of the frame 31, and a guide assembly 36 connected to the power plate chain 12 is installed in the sleeve 35, and a pin assembly 37 for fixing the guide assembly 36 is installed on the sleeve 35.

[0032] Specifically, there are multiple wheel axles 32, and all wheel axles 32 are located in the same plane. The specific number is not limited. In this embodiment, there are four wheel axles 32, and each wheel axle 32 is respectively equipped with a ground wheel 33 and an underground wheel 34 at both ends: wherein, the ground wheel 33 slides with the ground track 13 on the circulation plate 11, and the underground wheel 34 slides with the guide rail. When the frame 31 is in the upper conveying section, the ground wheel 33 contacts the ground track 13 to achieve support and guidance; when the frame 31 enters the lower conveying section and the arc section, the underground wheel 34 maintains contact with the guide rail, thereby ensuring that the frame 31 always remains connected to the power plate chain 12 during the entire conveying process, and the operation is stable and reliable.

[0033] The power plate chain 12 is provided with a plate chain hole that fits the end of a guide assembly 36, allowing it to be inserted into the hole. The guide assembly 36 is slidably connected to a sleeve 35 mounted on the bottom of the frame 31, allowing for vertical height adjustment. When the end of the guide assembly 36 is inserted into the plate chain hole of the power plate chain 12, the frame 31 is locked in the horizontal position and cannot move. When the guide assembly 36 is released from the plate chain hole, the frame 31 can be freely adjusted horizontally, thereby achieving flexible adjustment of the spacing between multiple frames 31. To fix the height of the guide assembly 36, a latch assembly 37 is provided. By engaging the latch assembly 37 with the sleeve 35, the guide assembly 36 can be locked at a desired height. The guide assembly 36 can have an unlimited number of height levels. In this embodiment, preferably, two fixed levels are provided: one for connecting the frame 31 to the power plate chain 12 and the other for separating the frame 31 from the power plate chain 12 to meet different operating conditions.

[0034] See also Figure 7 In one embodiment, in this embodiment, preferably, the guide assembly 36 includes a guide sleeve 361 slidably installed inside the sleeve 35, and a guide column 362 is movably installed inside the guide sleeve 361. The end of the guide column 362 passes through the guide sleeve 361 and is fixedly connected to a baffle 363. A limiting sleeve 364 is fixedly installed on the outer circumference of the guide column 362. The outer circumference of the guide column 362 is provided with a spring 365 located in the guide sleeve 361, and the two ends of the spring 365 are respectively connected to the limiting sleeve 364 and the inner wall of the guide sleeve 361.

[0035] Specifically, a limiting hole is provided on the outer surface of the guide sleeve 361, and the end of the latch assembly 37 is inserted into the limiting hole and fixedly connected to the guide sleeve 361. The end of the guide column 362 is installed with a blocking piece 363 located outside the guide sleeve 361. The blocking piece 363 is used to prevent the guide column 362 from escaping from the guide sleeve 361. At the same time, a spring 365 and a limiting sleeve 364 are provided on the outer surface of the guide column 362. The two work together to apply a certain pressure to the guide column 362 to keep it in a stable working state.

[0036] See also Figure 6 In one embodiment, in this embodiment, preferably, an upper limit hole 351 and a lower limit hole 352 are formed on the outer surface of the sleeve 35, and a limit groove 353 for the latch assembly 37 to move is formed between the upper limit hole 351 and the lower limit hole 352. Furthermore, the upper limit hole 351 is a gear position for separating the frame 31 from the power plate chain 12, and the lower limit hole 352 is a gear position for connecting and fixing the frame 31 to the power plate chain 12, and the limit groove 353 provides the latch assembly 37 with a movable path between the upper limit hole 351 and the lower limit hole 352, thereby realizing the switching and fixation of the latch assembly 37 between the two gears.

[0037] See also Figure 8 In one embodiment, in this embodiment, preferably, the latch assembly 37 includes a latch sleeve 371 arranged on the sleeve 35, and a latch shaft 372 is installed inside the latch sleeve 371. The latch shaft 372 is located inside the latch sleeve 371 and is provided with a fixing sleeve 373. The outer circumferential surface of the latch shaft 372 is provided with a latch spring 374 located inside the latch sleeve 371. One end of the latch spring 374 is connected to the fixing sleeve 373, and the other end is connected to the inner wall of the latch sleeve 371. A clamping block 375 is installed at the end of the latch sleeve 371.

[0038] When the cam 374 is in the closed position, the cam 375 is in the closed position, and the cam 375 is in the open position, so that the cam 375 can be rotated in the closed position to rotate.

[0039] See also Figure 1 In one embodiment, in this embodiment, preferably, it also includes an offline platform 4, the top of the offline platform 4 is higher than the conveying platform 1. When the wheels of the forklift 5 contact the offline platform 4, the trolley platform 3 gradually separates from the forklift 5 and enters the bottom of the conveying platform 1 to achieve recycling.

[0040] The working principle and use process of the present invention are as follows: when a forklift 5 with a certain wheelbase length is assembled on the production line, the front and rear distance of the trolley platform 3 on the power plate chain 12 needs to be adjusted to achieve a suitable position to carry the forklift 5.

[0041] First, pull the latch sleeve 371 outward to disengage the latch sleeve 371 from the lower limit hole 352 of the sleeve 35, and then lift the latch assembly 37 upward along the limit groove 353. The latch sleeve 371 will move upward along the limit groove 353 of the sleeve 35, and at the same time drive the guide assembly 36 connected to its latch shaft 372 to move upward. When the latch assembly 37 moves to the upper limit hole 351, release the latch sleeve 371, and the latch sleeve 371 will be pushed into the upper limit hole 352 under the action of the latch spring 374. 51, at this time the block 375 is just stuck in the upper limit hole 351, the position of the latch assembly 37 is fixed, and at the same time the lower end of the guide column 362 is separated from the plate chain hole on the power plate chain 12, and the trolley platform 3 is moved back and forth to a suitable position, and the lower end of the guide column 362 is roughly aligned with the new plate chain hole, and the latch sleeve 371 is pulled outward again. The latch assembly 37 is pressed down by the same principle, so that the guide sleeve 361 compresses the spring 365, and the force of the spring 365 presses the guide column 362 tightly on the power plate chain 12 When the forklift 5 is installed, the trolley platform 3 is placed on the upper track 13 and the lower track 13 is moved along the guide rail 362 so that the trolley platform 3 is not damaged by the impact of the guide rail 362.

[0042] Although this specification is described according to implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0043] Therefore, the above description is only a preferred embodiment of the present application and is not intended to limit the scope of implementation of the present application; that is, all equivalent modifications made according to the scope of the claims of the present application are within the scope of protection of the claims of the present application.

Claims

1. A circulating conveying system for forklift assembly, characterized in that: It includes a conveying platform, on which several trolley platforms are arranged, and a traction platform is arranged on the outside of the conveying platform for limiting the trolley platform on the conveying platform; the conveying platform includes a circulation plate, on which a power plate chain is arranged for relative movement with respect to the circulation plate, and a ground track is installed on the circulation plate; the traction platform includes a guide rail, which is arranged on the outside of the conveying platform and arranged along the moving path of the power plate chain, and is used to guide and limit the trolley platform when the trolley platform is located below the power plate chain.

2. The circulating conveying system for forklift assembly according to claim 1, characterized in that: The trolley platform includes a frame and an axle arranged at the bottom of the frame, with ground wheels and underground wheels fixedly installed at both ends of the axle. A sleeve is also installed at the bottom of the frame, and a guide assembly connected to the power plate chain is installed in the sleeve. A pin assembly for fixing the guide assembly is installed on the sleeve.

3. The circulating conveying system for forklift assembly according to claim 2, characterized in that: The guide assembly includes a guide sleeve that is slidably mounted inside the sleeve, a guide post is movably mounted inside the guide sleeve, the end of the guide post passes through the guide sleeve and is fixedly connected to a baffle, a limit sleeve is fixedly mounted on the outer circumference of the guide post, and a spring located inside the guide sleeve is provided on the outer circumference of the guide post, and both ends of the spring are respectively connected to the limit sleeve and the inner wall of the guide sleeve.

4. The circulating conveying system for forklift assembly according to claim 2, characterized in that: An upper limit hole and a lower limit hole are formed on the outer surface of the sleeve, and a limit groove for the latch assembly to move is formed between the upper limit hole and the lower limit hole.

5. The circulating conveying system for forklift assembly according to claim 4, characterized in that: The latch assembly includes a latch sleeve arranged on the sleeve, a latch shaft is installed inside the latch sleeve, a fixing sleeve is provided inside the latch sleeve, and the outer circumference of the latch shaft is sleeved with a latch spring located inside the latch sleeve, one end of the latch spring is connected to the fixing sleeve, and the other end is connected to the inner wall of the latch sleeve, and a clamping block is installed at the end of the latch sleeve.

6. The circulating conveying system for forklift assembly according to claim 5, characterized in that: The outer diameter of the latch sleeve is adapted to the slot width of the limiting slot, and the outer diameter of the clamping block is adapted to the inner diameters of the upper limiting hole and the lower limiting hole respectively.

7. The circulating conveying system for forklift assembly according to claim 1, characterized in that: It also includes a downline platform, the top of which is higher than the conveying platform.

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