Subframe storage assembly line

Abstract

The application provides a storage assembly line body of a subframe, which comprises a storage line body, an assembly conveying line and a return conveying line, the storage line body comprises, in sequence along a conveying direction of the subframe, a warehouse-in storage roller bed assembly, a transfer roller bed and a warehouse-out storage roller bed assembly, the transfer roller bed is used for transferring a supporting tool carrying the subframe from the warehouse-in storage roller bed assembly to the warehouse-out storage roller bed assembly; the assembly conveying line is used for conveying and assembling the subframe output from the storage line body and outputting from a discharge end of the assembly conveying line; and the return conveying line is used for conveying the empty supporting tool to a feeding end of the storage line body. The application realizes automatic warehouse-in and warehouse-out of the subframe without manual participation; the subframe and the supporting tool required for assembly can be automatically lifted to the assembly line without manual hoisting, and the operation time is greatly reduced; the empty supporting tool can be automatically returned and docked to the warehouse without manual hoisting of the empty supporting tool, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of pump truck technology, and particularly relates to a storage and assembly line for a subframe. Background Technology

[0002] A concrete pump truck is a type of construction machinery that pumps concrete and delivers it to the pouring point. The pump truck mainly consists of a superstructure and a chassis, with the subframe being a key component connecting the superstructure and chassis.

[0003] Currently, subframes are manually hoisted, unloaded, and stacked on the ground at the beginning of the subframe assembly line. The subframe assembly line is a chain conveyor. During assembly, workers first hoist the supporting fixtures to the first station of the conveyor line. Then, workers locate the required subframes according to the production plan and hoist them onto the supporting fixtures. Next to the chain conveyor line is an underground conveyor line for the return of the supporting fixtures, with elevators at both ends. At the last station of the subframe assembly line, after the assembled subframe is lifted off the supporting fixtures, workers hoist the large fixtures to the elevator on the return line. The elevator descends, and the supporting fixtures return via the underground elevator to the line-end elevator and then to the ground. Workers then hoist the supporting fixtures back onto the assembly line. This method of manually warehousing subframes requires manual identification and location during assembly, resulting in low efficiency. The storage of subframes is not aligned with the assembly plan to ensure first-in, first-out (FIFO). Stacking subframes for retrieval is inconvenient and requires manual hoisting onto the assembly line. Subframe support fixtures also require manual hoisting onto the assembly line and then onto the return line, increasing auxiliary time. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies of the prior art, the present invention provides a subframe storage and assembly line to realize the automatic storage, retrieval and assembly of subframes, thereby improving work efficiency.

[0005] To achieve the above objectives, the present invention provides a subframe storage assembly line, the subframe storage assembly line comprising:

[0006] The storage line includes an inbound storage roller bed assembly, a transfer roller bed, and an outbound storage roller bed assembly arranged sequentially along a first direction. The transfer roller bed is used to transfer the support fixture carrying the subframe from the inbound storage roller bed assembly to the outbound storage roller bed assembly. The first direction is parallel to the ground.

[0007] Assembly conveyor lines are used to transport and assemble subframes from the storage line and output them from the discharge end of the assembly conveyor line; and

[0008] The return conveyor line is used to return unloaded support fixtures to the feed end of the storage line.

[0009] In the embodiment of the present application, the in-storage storage roller bed assembly comprises a plurality of first storage roller beds and an in-storage roller bed arranged side by side along the second direction, the out-storage storage roller bed assembly comprises a plurality of second storage roller beds and an out-storage roller bed arranged side by side along the second direction, and the transfer roller bed is capable of sliding along the second direction, which is parallel to the ground and perpendicular to the first direction.

[0010] In the embodiment of the present application, the storage assembly line body of the subframe further comprises a second lifting mechanism arranged between the assembly conveying line and the storage line body, and the second lifting mechanism is used to move the support tool carrying the subframe from the out-storage roller bed to the feeding end of the assembly conveying line.

[0011] In the embodiment of the present application, the feeding end of the storage line body is further provided with an upper piece roller bed, and a third lifting mechanism is arranged between the upper piece roller bed and the storage line body, and the third lifting mechanism is used to lift the support tool carrying the subframe from the upper piece roller bed to the feeding end of the storage line body.

[0012] In the embodiment of the present application, the upper piece roller bed, the in-storage roller bed, the first storage roller bed, the second storage roller bed and the out-storage roller bed are all fixed roller bed structures.

[0013] The fixed roller bed comprises a first structure main body, a first roller assembly arranged on the first structure main body and a driving assembly, the first roller assembly comprises a plurality of rollers arranged along the length direction of the first structure main body, and the driving assembly is used to drive the plurality of rollers to rotate in the same direction or in the opposite direction, so as to drive the support tool to move.

[0014] In the embodiment of the present application, the transfer roller bed comprises a second structure main body, a first roller assembly arranged on the second structure main body and a second roller assembly arranged below the second structure main body, and the second roller assembly comprises a driving member arranged on a walking wheel and driving the walking wheel to walk.

[0015] In the embodiment of the present application, the assembly conveying line and the return conveying line are arranged side by side along the third direction, and the two ends of the assembly conveying line and the two ends of the return conveying line are one-to-one corresponding, the storage assembly line body of the subframe further comprises a first lifting mechanism arranged close to the discharge end of the assembly conveying line, and the first lifting mechanism is used to move the empty support tool from the discharge end of the assembly conveying line to the feeding end of the return conveying line; the third direction is perpendicular to the first direction and the second direction.

[0016] In the embodiment of the present application, the support tool comprises a support body and a first support part and a second support part arranged on the support body, the first support part and the second support part are arranged side by side along the length direction of the support body and the relative position is adjustable, and the first support part and the second support part are both provided with a limiting stopper used to limit the subframe.

[0017] In the embodiment of the present application, the side of the support tool facing the subframe is coated with a flexible material.

[0018] In the embodiment of the present application, the storage line body is arranged on the support, the support is provided with a sliding rail extending in a second direction at a position corresponding to the transfer roller bed, the transfer roller bed is capable of sliding along the sliding rail, and the second direction is parallel to the ground and perpendicular to the first direction.

[0019] Through the above technical solution, the storage assembly line body of the subframe provided by the embodiment of the present application has the following beneficial effects:

[0020] The subframes are transported to the storage line body by the delivery vehicle, hoisted into the warehouse storage roller bed assembly of the storage line body, stored in the warehouse storage roller bed assembly, transferred from the warehouse storage roller bed assembly to the warehouse-out storage roller bed assembly for storage or waiting for warehouse-out through the transfer roller bed, entered into the feeding end of the assembly conveying line from the warehouse-out storage roller bed assembly, and assembled and transported along the transmission direction of the assembly conveying line, and the assembled subframes are hoisted away to the next process after reaching the discharge end of the assembly conveying line. The whole flow process of the subframes is carried out under the bearing of the support tool, and when the subframes are hoisted away at the discharge end of the assembly conveying line, the empty support tool is conveyed back to the feeding end of the storage line body through the backflow conveying line to wait for the feeding of the next subframe. The present application realizes automatic warehousing and automatic warehouse-out of the subframes without manual participation, the subframes and the support tool required for assembly can be automatically fed to the assembly conveying line without manual hoisting, the operation time is greatly reduced, and the empty support tool can be automatically backflowed and docked with the warehouse without manual hoisting of the empty support tool. The whole storage assembly line body forms a closed loop, automatic scheduling is completed through the warehouse management system and the MES system, and the operation efficiency is improved.

[0021] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0023] Figure 1 is a structural schematic view of a storage assembly line body of a subframe according to an embodiment of the present application;

[0024] Figure 2 is a front view of a storage assembly line body of a subframe according to an embodiment of the present application;

[0025] Figure 3This is a top view of a storage assembly line for a subframe according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the supporting fixture in the storage assembly line of the subframe according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the fixed roller bed in the storage assembly line of the subframe according to an embodiment of the present invention;

[0028] Figure 6 This is a front view schematic diagram of a transfer roller bed in a storage assembly line of a subframe according to an embodiment of the present invention;

[0029] Figure 7 This is a top view schematic diagram of a transfer roller bed in a storage assembly line for a subframe according to an embodiment of the present invention;

[0030] Figure 8 This is a front view schematic diagram of the storage assembly line of the subframe according to the second embodiment of the present invention;

[0031] Figure 9 This is a front view schematic diagram of the storage assembly line of the subframe according to the third embodiment of the present invention;

[0032] Figure 10 This is a front view schematic diagram of the storage assembly line of the subframe according to the fourth embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures

[0034] 1. Storage line, 21-station roller bed

[0035] 11. Warehouse storage roller bed assembly 3. Return conveyor line

[0036] 111 Warehouse Roller Bed 4 Support Fixture

[0037] 112 First storage roller bed 41 Support body

[0038] 12 Transfer Roller Bed 42 First Support Section

[0039] 121 Second structural main body 43 Second support part

[0040] 122 Rollers 44 Limit Stops

[0041] 123 Walking wheels 5 First lifting mechanism

[0042] 124 First structural main body 51 Second lifting mechanism

[0043] 125 Drive assembly 52 Third lifting mechanism

[0044] 126 Chain Assembly 6 Upper Roller Bed

[0045] 127 Driveshaft 7 Bracket

[0046] 13 Outbound storage roller bed assembly 8 Subframe

[0047] 131 Outbound Roller Bed X First Direction

[0048] 132 Second storage roller bed Y Third direction

[0049] 14 Slide rail Z Second direction

[0050] 2 Assembly Conveyor Line Detailed Implementation

[0051] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0052] The storage assembly line for the subframe according to the present invention is described below with reference to the accompanying drawings.

[0053] See Figure 1 and Figure 2 In an embodiment of the present invention, a storage assembly line for a subframe is provided. The storage assembly line includes a storage line 1, an assembly conveyor line 2, and a return conveyor line 3. The storage line 1 includes an inbound storage roller assembly 11, a transfer roller assembly 12, and an outbound storage roller assembly 13 arranged sequentially along a first direction. The transfer roller assembly 12 is used to transfer the support fixture 4 carrying the subframe 8 from the inbound storage roller assembly 11 to the outbound storage roller assembly 13. The assembly conveyor line 2 is used to convey and assemble the subframe 8 output from the storage line 1 and output it from the discharge end of the assembly conveyor line 2. The return conveyor line 3 is used to return the unloaded support fixture 4 to the inbound end of the storage line 1. The first direction... Figure 1 The X-axis direction is also the transportation direction of the subframe 8.

[0054] Specifically, the subframe 8 is transported to the storage line by a delivery vehicle and hoisted into the inbound storage roller assembly 11 of the storage line 1. A portion of the subframes 8 are stored in the inbound storage roller assembly 11. Subframes 8 requiring retrieval are transferred from the inbound storage roller assembly 11 to the outbound storage roller assembly 13 via the transfer roller assembly 12 for storage or to await retrieval. Subframes 8 requiring retrieval then enter the feeding end of the assembly conveyor line 2 from the outbound storage roller assembly 13 and are assembled and transported along the conveying direction of the assembly conveyor line 2. After assembly, the subframe 8 is hoisted from the discharge end of the assembly conveyor line 2 to the next process. The entire flow of the subframe 8 is carried out under the support of the supporting fixture 4. After the subframe 8 is hoisted from the discharge end of the assembly conveyor line 2, the empty supporting fixture 4 is returned to the feeding end of the storage line 1 via the return conveyor line 3 to await the feeding of the next subframe 8. The assembly conveyor line 2 and the return conveyor line 3 form a double-layer structure. The assembly conveyor line 2 is located on the ground, and the plane of the workstation roller bed 21 in the ground layer of the assembly conveyor line 2 is flush with the bottom surface, facilitating operator work. The transfer roller bed 12 serves as an intermediate transition, enabling automatic storage and retrieval of the subframe 8 without manual intervention. The subframe 8 and supporting fixtures 4 required for assembly can be automatically loaded onto the assembly conveyor line 2 without manual hoisting, greatly reducing operation time. Furthermore, the empty supporting fixtures 4 can be automatically returned and connected to the warehouse without manual hoisting. The entire storage and assembly line forms a closed loop, with automatic scheduling achieved through the warehouse management system and the MES system, improving operational efficiency.

[0055] In embodiments of the present invention, such as Figure 3 As shown, the inbound storage roller bed assembly 11 includes multiple first storage roller beds 112 and inbound roller beds 111 arranged side-by-side at intervals along a second direction. The outbound storage roller bed assembly 13 includes multiple second storage roller beds 132 and outbound roller beds 131 arranged side-by-side at intervals along a second direction. The transfer roller bed 12 is capable of sliding along the second direction, which is... Figure 1 The Z-axis direction is specified. The inbound storage roller assembly 11 includes one inbound roller 111 and multiple first storage rollers 112, which are evenly spaced. The outbound storage roller assembly 13 includes one outbound roller 131 and multiple second storage rollers 132, which are also evenly spaced. Each roller in the inbound storage roller assembly 11 and each roller in the outbound storage roller assembly 13 are arranged in a one-to-one correspondence along the left-right direction. The number of first storage rollers 112 and second storage rollers 132 can be determined based on the required inventory of the subframe 8.

[0056] In embodiments of the present invention, such as Figure 4As shown, the support fixture 4 includes a support body 41 and a first support portion 42 and a second support portion 43 disposed on the support body 41. The first support portion 42 and the second support portion 43 are arranged at intervals along the length direction of the support body 41 and their relative positions are adjustable. Both the first support portion 42 and the second support portion 43 are provided with limiting blocks 44 for limiting the subframe 8. A protrusion is also provided at the right end of the support body 41, which is used to support the rear of the subframe 8. The first support portion 42 can move along a first direction on the support body 41. By adjusting the distance between the first support portion 42 and the second support portion 43, it can adapt to and support subframes 8 of different lengths. Both the first support portion 42 and the second support portion 43 are provided with limiting blocks 44 with openings in the middle. The subframe 8 is engaged with the opening of the limiting block 44, thereby preventing the subframe 8 from moving in the width direction. Furthermore, the limiting effect of the support and the limiting blocks 44 ensures the stability of the subframe 8 during the transfer process.

[0057] In an embodiment of the present invention, the side of the support fixture 4 facing the subframe 8 is coated with a flexible material. The flexible material can be polyurethane or the like. The flexible material is applied to the rear of the support fixture 4, the first support part 42, and all surfaces of the second support part 43 that come into contact with the subframe 8, in order to protect the paint on the subframe 8.

[0058] In an embodiment of the present invention, the assembly conveyor line 2 and the return conveyor line 3 are arranged side by side at intervals along a third direction. The two ends of the assembly conveyor line 2 and the two ends of the return conveyor line 3 correspond one-to-one. The storage assembly line body of the subframe also includes a first lifting mechanism 5 disposed near the discharge end of the assembly conveyor line 2. The first lifting mechanism 5 is used to move the unloaded support fixture 4 from the discharge end of the assembly conveyor line 2 to the inlet end of the return conveyor line 3. Figure 1 As shown, the third direction is the Y-axis direction.

[0059] In one embodiment, the return conveyor line 3 is located below the assembly conveyor line 2, i.e., the return conveyor line 3 is below ground level. In this case, the first lifting mechanism 5 lowers the unloaded support fixture 4, which is output from the discharge end of the assembly conveyor line 2, to the inlet end of the return conveyor line 3, thereby completing the docking of the unloaded support fixture 4 with the return conveyor line 3. In another embodiment, such as... Figure 10As shown, the return conveyor line 3 can be arranged above the assembly conveyor line 2. In this case, the first lifting mechanism 5 lifts the empty support fixture 4 output from the discharge end of the assembly conveyor line 2 to the inlet end of the return conveyor line 3 for docking. It should be noted that, regardless of whether the return conveyor line 3 is located below or above the assembly conveyor line 2, the inlet end of the assembly conveyor line 2 and the discharge end of the return conveyor line 3 are always vertically aligned, and the discharge end of the assembly conveyor line 2 and the inlet end of the return conveyor line 3 are aligned along a third direction. The first lifting mechanism 5 only needs to rise or fall to complete the docking between the assembly conveyor line 2 and the return conveyor line 3. This invention automatically returns the empty support fixture 4 to the storage line 1, eliminating the need for manual hoisting of the empty support fixture 4, thus greatly improving work efficiency.

[0060] In an embodiment of the present invention, the storage line 1 is mounted on a support 7. A slide rail 14 extending in a second direction is provided on the support 7 at a position corresponding to the transfer roller bed 12, allowing the transfer roller bed 12 to slide along the slide rail 14. The support 7 is a steel structure platform. Several parallel and spaced slide rails 14 are provided on the upper surface of the support 7, each extending in a front-rear direction. The bottom of the transfer roller bed 12 contacts and engages with each slide rail 14, enabling the transfer roller bed 12 to slide along the slide rail 14 to accommodate different roller beds in the incoming storage roller bed assembly 11 or the outgoing storage roller bed assembly 13, thereby fulfilling different requirements.

[0061] In an embodiment of the present invention, the storage assembly line of the subframe further includes a second lifting mechanism 51 disposed between the assembly conveyor line 2 and the storage line 1. The second lifting mechanism 51 is used to move the support fixture 4 carrying the subframe 8 from the outgoing roller bed 131 to the feeding end of the assembly conveyor line 2.

[0062] Furthermore, after each subframe 8 is assembled, it is detached from the support fixture 4. The unloaded support fixture 4 is returned to the storage line 1 via the return conveyor line 3 for supporting the next subframe 8. The flow process of the unloaded support fixture 4 is as follows: the first lifting mechanism 5 lowers or rises with the unloaded support fixture 4 to connect with the return roller bed of the return conveyor line 3 → the unloaded support fixture 4 enters the return roller bed and returns to the discharge end of the return conveyor line 3 → the second lifting mechanism 51 lowers or rises to connect with the return roller bed, and the unloaded support fixture 4 enters the second lifting mechanism 51 → the second lifting mechanism 51 lifts and connects with the outgoing roller bed 131, and the unloaded support fixture 4 enters the outgoing roller bed 131. →Transfer roller 12 moves to dock with outbound roller 131, and the unloaded support fixture 4 enters transfer roller 12. →Transfer roller 12 moves to dock with inbound roller 111, and the unloaded support fixture 4 enters inbound roller 111. →Third lifting mechanism 52 lifts inbound roller 111, and the unloaded support fixture 4 enters third lifting mechanism 52. →Third lifting mechanism 52 descends to dock with upper part roller 6, and the unloaded support fixture 4 enters upper part roller 6, waiting for the subframe 8 to be loaded and stored. When there is no need for the subframe 8 to be stored, the other unloaded support fixtures 4 are accumulated on the return roller.

[0063] In an embodiment of the present invention, an upper roller bed 6 is further provided at the feeding end of the storage line 1, and a third lifting mechanism 52 is provided between the upper roller bed 6 and the storage line 1. The third lifting mechanism 52 is used to lift the support fixture 4 carrying the subframe 8 from the upper roller bed 6 to the feeding end of the storage line 1. The first lifting mechanism 5, the second lifting mechanism 51, and the third lifting mechanism 52 in the present invention can all be elevators.

[0064] In an embodiment of the present invention, the support fixture 4, carrying the sub-frame 8, moves along the various rollers of the storage line 1 and the assembly conveyor line 2. The support fixture 4 rests on the rollers 122 of the rollers, and the sub-frame 8 rests on the support fixture 4. The sub-frame 8 moves along with the support fixture 4 throughout the entire process, as follows: the sub-frame 8 is hoisted from the delivery vehicle to the upper roller 6 → the third lifting mechanism 52 connects to the upper roller 6, and the sub-frame 8 enters the third lifting mechanism 52 → the third lifting mechanism 52 lifts it to the receiving roller 111, and the sub-frame 8 enters the receiving roller 111 → the transfer roller 12 connects to the receiving roller 111, and the sub-frame 8 enters the transfer roller 12 → the transfer roller 12 moves to the idle first storage roller 112, and the sub-frame 8 enters the first storage roller 112 for storage → the transfer roller 12 connects to the receiving roller 111, and the sub-frame 8 enters the transfer roller 12 → the transfer roller 12 moves to the idle first storage roller 112, and the sub-frame 8 enters the first storage roller 112 for storage → the transfer roller 12 moves to the idle first storage roller 112, and the sub-frame 8 enters the first storage roller 112 for storage. Bed 12 moves to the first storage roller bed 112 of the sub-frame 8 to be put into line, the sub-frame 8 enters the transfer roller bed 12 → the transfer roller bed 12 moves and docks with the outbound roller bed 131, the sub-frame 8 enters the outbound roller bed 131 → the second lifting mechanism 51 lifts and docks with the outbound roller bed 131, the sub-frame 8 enters the second lifting mechanism 51 → the second lifting mechanism 51 lowers and docks with the assembly conveyor line 2, the sub-frame 8 enters the first station roller bed 21 of the assembly conveyor line 2 → the sub-frame 8 flows on each station roller bed 21 of the assembly line according to the rhythm → after the sub-frame 8 is assembled, it is lifted away from the assembly conveyor line 2.

[0065] In the second embodiment of the present invention, as Figure 8 As shown, based on the actual site requirements, the subframe 8 is stored on the ground, which eliminates the need for the support platform 7 and the third lifting mechanism 52. This allows the storage roller bed 111 and the loading roller bed 6 to be the same roller bed, and also lowers the height of the second lifting mechanism 51.

[0066] Furthermore, in the third embodiment of the present invention, as Figure 9 As shown, the inventory capacity of the subframe 8 can also be increased by using a multi-layer platform on the storage line 1, based on the design inventory requirements of the subframe 8. In this embodiment, the heights of the second lifting mechanism 51 and the third lifting mechanism 52 are relatively increased, and the number of inbound rollers 111, outbound rollers 131, transfer rollers 12, and the first storage rollers 112 and the second storage rollers 132 are increased. This can meet the requirements of greater inventory capacity and increase the storage inventory of the subframe 8.

[0067] Furthermore, the entire subframe 8 storage is managed by the warehouse management system and scheduled by the warehouse control system. Subframe 8 incoming materials are affixed with a QR code containing workpiece information. Before being put into storage, the subframe 8 is scanned, and the system automatically completes the storage based on the storage location information. The warehouse management system also interfaces with the production line control system, automatically selecting the required subframe 8 for automatic delivery to the assembly line based on production needs. Specifically, the information flow for subframe 8 storage is as follows: the MES requests a storage order and sends it to the WMS for receipt. Then, the storage order is scanned, a temporary storage inventory (virtual warehouse) is generated, a scheduling operation is performed, and a storage instruction is generated. This storage instruction drives the relevant rollers and other equipment on the storage assembly line to start operation. When subframe 8 needs to be removed from storage, the storage order is simply changed to a delivery order, which generates a delivery instruction to begin the relevant delivery action.

[0068] In embodiments of the present invention, the loading roller bed 6, the receiving roller bed 111, the first storage roller bed 112, the second storage roller bed 132, the outgoing roller bed 131, and the workstation roller bed 21 are all fixed roller bed structures; such as Figure 5 As shown, the fixed roller bed includes a first structural body 124 and a first roller assembly and a drive assembly 125 disposed on the first structural body 124. The first roller assembly includes a plurality of rollers 122 arranged at intervals along the length direction of the first structural body 124. The drive assembly 125 is used to drive the plurality of rollers 122 to rotate forward or reverse simultaneously, so as to move the support fixture 4.

[0069] It should be noted that the position of the fixed roller bed itself is fixed. When the sub-carriage 8 is on the fixed roller bed, the first roller assembly of the fixed roller bed rotates, thereby driving the support fixture 4 on the roller bed to move, and in turn driving the entire sub-carriage 8 to move. The drive assembly 125 includes a motor and a chain assembly 126. Each roller 122 has a sprocket around both ends. Any two adjacent sprockets in the same row are linked together. The output shaft of the motor is connected to the sprocket. The rotation of the motor output shaft drives the sprocket to rotate, thereby driving the roller 122 to rotate. When the motor rotates forward, the drive roller 122 rotates forward, driving the sub-carriage 8 forward. When the motor rotates in reverse, the drive roller 122 rotates in reverse, driving the sub-carriage 8 backward.

[0070] In embodiments of the present invention, such as Figure 6 and Figure 7 As shown, the transfer roller bed 12 includes a second structural body 121, a first roller assembly disposed on the second structural body 121, and a second roller assembly disposed below the second structural body 121. The second roller assembly includes a traveling wheel 123 disposed on the traveling wheel 123 and a drive member for driving the traveling wheel 123 to travel.

[0071] It should be noted that, in addition to the first roller assembly driving the subframe 8 to move, the transfer roller bed 12 itself can change position under the drive of the traveling wheels 123. Two traveling wheels 123 are arranged below the second main body 121. The two traveling wheels 123 are connected to a motor via a transmission shaft 127. The forward or reverse rotation of the motor drives the transmission shaft 127 to rotate forward or reverse, thereby enabling the traveling wheels 123 to move back and forth along the slide rail 14. This realizes the movement of the transfer roller bed 12 on the slide rail 14.

[0072] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0073] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A storage assembly line for a subframe, characterized in that, The subframe storage and assembly line is a closed-loop line and includes: The storage line (1) includes an inbound storage roller bed assembly (11), a transfer roller bed (12), and an outbound storage roller bed assembly (13) arranged sequentially along a first direction. The transfer roller bed (12) is used to transfer the support fixture (4) carrying the subframe (8) from the inbound storage roller bed assembly (11) to the outbound storage roller bed assembly (13). The first direction is parallel to the ground. The support fixture (4) includes a support body (41) and a first support part (42) and a second support part (43) disposed on the support body (41). The first support part (42) and the second support part (43) are arranged at intervals along the length direction of the support body (41) and their relative positions are adjustable. Both the first support part (42) and the second support part (43) are provided with a limiting block (44) for limiting the subframe (8). Assembly conveyor line (2), the assembly conveyor line (2) being used to convey and assemble the subframe (8) output from the storage line body (1) and output it from the discharge end of the assembly conveyor line (2); and The return conveyor line (3) is used to return the unloaded support fixture (4) to the feed end of the storage line (1); The assembly conveyor line (2) and the return conveyor line (3) are arranged side by side at intervals along a third direction. The two ends of the assembly conveyor line (2) and the two ends of the return conveyor line (3) correspond one-to-one. The storage assembly line body of the subframe also includes a first lifting mechanism (5) set near the discharge end of the assembly conveyor line (2). The first lifting mechanism (5) is used to move the unloaded support fixture (4) from the discharge end of the assembly conveyor line (2) to the feed end of the return conveyor line (3).

2. The subframe storage and assembly line as described in claim 1, characterized in that, The inbound storage roller assembly (11) includes a plurality of first storage rollers (112) and inbound rollers (111) arranged side by side at intervals along the second direction. The outbound storage roller assembly (13) includes a plurality of second storage rollers (132) and outbound rollers (131) arranged side by side at intervals along the second direction. The transfer roller (12) is capable of sliding along the second direction, which is parallel to the ground and perpendicular to the first direction. The third direction is perpendicular to both the first and second directions.

3. The subframe storage and assembly line as described in claim 2, characterized in that, The storage assembly line of the subframe also includes a second lifting mechanism (51) disposed between the assembly conveyor line (2) and the storage line (1). The second lifting mechanism (51) is used to move the support fixture (4) carrying the subframe (8) from the outgoing roller bed (131) to the feeding end of the assembly conveyor line (2).

4. The subframe storage and assembly line as described in claim 3, characterized in that, The feeding end of the storage line (1) is also provided with an upper roller bed (6), and a third lifting mechanism (52) is provided between the upper roller bed (6) and the storage line (1). The third lifting mechanism (52) is used to lift the support fixture (4) carrying the subframe (8) from the upper roller bed (6) to the feeding end of the storage line (1).

5. The subframe storage and assembly line as described in claim 4, characterized in that, The loading roller bed (6), the receiving roller bed (111), the first storage roller bed (112), the second storage roller bed (132), and the outgoing roller bed (131) are all fixed roller bed structures; The fixed roller bed includes a first structural body (124) and a first roller assembly and a drive assembly (125) disposed on the first structural body (124). The first roller assembly includes a plurality of rollers (122) arranged at intervals along the length direction of the first structural body (124). The drive assembly (125) is used to drive the plurality of rollers (122) to rotate forward or in reverse at the same time, so as to drive the support fixture (4) to move.

6. The subframe storage and assembly line as described in claim 5, characterized in that, The transfer roller bed (12) includes a second structural body (121), a first roller assembly disposed on the second structural body (121), and a second roller assembly disposed below the second structural body (121). The second roller assembly includes a traveling wheel (123) and a drive member for driving the traveling wheel (123) to travel.

7. The subframe storage and assembly line as described in claim 1, characterized in that, The side of the support fixture (4) facing the subframe (8) is coated with a flexible material.

8. The subframe storage and assembly line as described in claim 2, characterized in that, The storage line (1) is mounted on a support (7). A slide rail (14) extending along the second direction is provided on the support (7) at the position corresponding to the transfer roller bed (12). The transfer roller bed (12) can slide along the slide rail (14). The second direction is horizontal and perpendicular to the first direction.

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