Bench type lifting skid and automatic exchange device

Abstract

The utility model discloses a kind of well derrick type lifting sliding table and trolley automatic exchange device, it is related to material handling technical field, wherein, well derrick type lifting sliding table and trolley automatic exchange device include trolley, sliding table and control device, trolley only has a layer of loading platform, loading platform is used to bear tray;Sliding table includes lifting mechanism and fixed mechanism, lifting mechanism includes drive assembly and lifting frame, drive assembly can drive lifting frame to move along vertical direction, lifting frame has initial position and operating position, to make lifting frame can reciprocate between initial position and operating position.The utility model's technical scheme is by using trolley only sets a layer of loading platform, lifting frame reciprocates along vertical direction under the control of drive assembly and cooperates with first conveying component, second conveying component realizes the structure of tray automatic conveying, effectively solve the safety risk such as drop, bruise, pinch, occupational strain etc. that exist in workpiece feeding and discharging process and the problem of low efficiency of artificial handling.

Description

Technical Field

[0001] This utility model relates to the field of material handling technology, and in particular to an automatic exchange device for a derrick-type lifting slide and a trolley. Background Technology

[0002] In industrial production processes such as automobile manufacturing, the loading, unloading, and transfer of workpieces are crucial for ensuring the continuous operation of the production line. Currently, in the loading area, workpieces are hoisted from a height using overhead cranes or lifting devices. Operators must step onto fixed platforms to enter the trolley area and manually assist in the hoisting operation, precisely positioning the workpieces and placing them on the upper level of the two-tiered trolley. Subsequently, the trolley is pushed to a lifting slide for docking, where operators must manually push the workpieces one by one onto the upper level of the slide and move empty pallets from the lower level of the slide back to the lower level of the trolley. This series of operations is not only cumbersome and highly dependent on manual intervention, but also carries multiple safety risks such as falls, crushing injuries, pinching injuries, and occupational injuries, seriously affecting the health and safety of workers and overall production efficiency. Utility Model Content

[0003] The main purpose of this utility model is to propose an automatic exchange device for a derrick-type lifting slide and trolley, which aims to solve the safety risks such as falling, crushing, pinching, and occupational injury that exist in the process of manually handling workpieces during loading and unloading, as well as the problem of low efficiency of manual handling.

[0004] To achieve the above objectives, this utility model proposes an automatic exchange device for a derrick-type lifting slide and a trolley, the automatic exchange device comprising: A trolley having a loading platform for supporting pallets; A slide table, the slide table including a lifting mechanism and a fixing mechanism, the lifting mechanism including a drive assembly and a lifting frame pulsatingly connected to the drive assembly, the drive assembly being able to drive the lifting frame to move in a vertical direction, the lifting frame having an initial position and a working position, so that the lifting frame can reciprocate between the initial position and the working position; The fixing mechanism includes a fixed frame and a lifting platform. The lifting frame is located between the trolley and the fixed frame, and the lifting platform is located on the side of the fixed frame away from the lifting frame. The lifting frame is provided with a first conveying component and a second conveying component in sequence along the vertical direction. The fixed frame is provided with a third conveying component and a fourth conveying component in sequence along the vertical direction. The lifting platform is movable relative to the fixed frame in the vertical direction. The lifting platform is used to move the pallet from the discharge end of the third conveying component to the inlet end of the fourth conveying component. When the lifting frame is in the initial position, the loading platform can abut against the feed end of the first conveying component, so that the pallet can move from the loading platform to the first conveying component; When the lifting frame is located at the working position, the discharge end of the first conveying component can abut against the inlet end of the third conveying component, so that the first conveying component can move the pallet to the third conveying component; the inlet end of the second conveying component can abut against the discharge end of the fourth conveying component, so that the fourth conveying component can move the pallet to the second conveying component; and the discharge end of the second conveying component can abut against the loading platform, so that the second conveying component can move the pallet to the loading platform. The control device includes the drive assembly, the lifting platform, the first conveying assembly, the second conveying assembly, the third conveying assembly, and the fourth conveying assembly, all of which are electrically connected to the control device.

[0005] In one embodiment, the drive assembly includes a base frame, a drive component, and a support arm. The drive component is connected to the base frame and is drively connected to the support arm. The drive component can drive the support arm to move relative to the base frame in the vertical direction. The support arm is connected to the lifting frame so that the drive component can drive the lifting frame to move in the vertical direction through the support arm. The drive component is electrically connected to the control device.

[0006] In one embodiment, the driving component includes a motor, a lead screw, and a nut. The motor is connected to the base frame and is driven by the lead screw. The lead screw is threadedly engaged with the nut, and the nut is connected to a support arm, so that the motor can drive the lifting frame to move along the vertical direction through the lead screw, the nut, and the support arm. The motor is electrically connected to the control device.

[0007] In one embodiment, the derrick-type lifting slide and trolley automatic exchange device further includes a detection device, which includes a pallet presence detection unit and a pallet counting unit, both of which are electrically connected to the control device. The number of pallet presence detection units is multiple, and these multiple pallet presence detection units are divided into a first pallet presence detection unit, a second pallet presence detection unit, a third pallet presence detection unit, and a fourth pallet presence detection unit. The first pallet presence detection unit and the second pallet presence detection unit are arranged at intervals along the vertical direction on the lifting frame, and the third pallet presence detection unit and the fourth pallet presence detection unit are arranged at intervals along the vertical direction on the fixed frame. The first pallet presence detection unit is used to detect whether the pallet is present on the first conveying component, the second pallet presence detection unit is used to detect whether the pallet is present on the second conveying component, the third pallet presence detection unit is used to detect whether the pallet is present on the third conveying component, and the fourth pallet presence detection unit is used to detect whether the pallet is present on the fourth conveying component. The first conveying assembly has a first workstation, the second conveying assembly has a second workstation, the third conveying assembly has a third workstation, and the fourth conveying assembly has a fourth workstation. There are multiple pallet counting units, which are divided into a first pallet counting unit, a second pallet counting unit, a third pallet counting unit, and a fourth pallet counting unit. The first and second pallet counting units are spaced apart along the vertical direction on the lifting frame, and the third and fourth pallet counting units are spaced apart along the vertical direction on the fixed frame. The first pallet counting unit is used to detect whether a pallet is present at the first workstation, the second pallet counting unit is used to detect whether a pallet is present at the second workstation, the third pallet counting unit is used to detect whether a pallet is present at the third workstation, and the fourth pallet counting unit is used to detect whether a pallet is present at the fourth workstation.

[0008] In one embodiment, there are multiple first workstations, and the number of first tray counting units is the same as the number of first workstations and they are set up in a one-to-one correspondence. And / or, There are multiple second workstations, and the number of second tray counting units is the same as the number of second workstations and they are set up in a one-to-one correspondence. And / or, The number of the third workstation is at least one, and the number of the third tray counting units is consistent with the number of the third workstations and is set in a one-to-one correspondence. And / or, The number of the fourth workstation is at least one, and the number of the fourth tray counting units is consistent with the number of the fourth workstations and is set in a one-to-one correspondence.

[0009] In one embodiment, the tray presence detection unit includes an area scanner; And / or, The tray counting unit includes a photoelectric sensor.

[0010] In one embodiment, the lifting frame includes a frame body and an inlet frame. The inlet frame is located between the trolley and the frame body. A fixed frame is provided on the side of the frame body away from the inlet frame. A first conveying component and a second conveying component are sequentially arranged on the frame body along the vertical direction. The driving component can drive the frame body to move relative to the inlet frame in the vertical direction. The frame body has an initial position and a working position, so that the frame body can reciprocate between the initial position and the working position. The feeding end of the inlet frame can abut against the loading platform, and the discharging end of the inlet frame can abut against the feeding end of the first conveying component or the discharging end of the second conveying component.

[0011] In one embodiment, a position detection unit is provided on the side of the entrance frame facing the trolley. The position detection unit is electrically connected to the control module and is used to detect whether the trolley is properly docked with the entrance frame. And / or, A safety light curtain is provided on the side of the entrance frame facing the trolley. The safety light curtain is electrically connected to the control device and is used to detect whether a person or object enters the entrance frame. And / or, A stopper is provided on the side of the frame body facing the inlet frame to prevent the tray from sliding out from the discharge end of the first conveying assembly.

[0012] In one embodiment, the first conveying assembly includes a first electric roller assembly; And / or, The second conveying assembly includes a second electric roller assembly; And / or, The third conveying assembly includes a third electric roller assembly; And / or, The fourth conveying assembly includes a fourth electric roller assembly; And / or, The entrance frame is equipped with a fifth electric roller assembly, which is electrically connected to the control device. And / or, The lifting platform includes a frame, a sixth electric roller assembly, a drive unit, and a pedal. The drive unit is connected to the frame and is drively connected to the sixth electric roller assembly. The drive unit can drive the sixth electric roller assembly to move relative to the frame in the vertical direction, so that the sixth electric roller assembly can move the tray from the discharge end of the third conveying component to the feed end of the fourth conveying component. The pedal is rotatably mounted on the frame. The pedal, the drive unit, and the sixth electric roller assembly are all electrically connected to the control device.

[0013] In one embodiment, the control device includes a control box, a mounting frame, buttons, and indicator lights. The buttons are disposed on the mounting frame, and the indicator lights are disposed on the side of the lifting frame facing the trolley. The buttons, the indicator lights, the drive assembly, the lifting platform, the first conveying assembly, the second conveying assembly, the third conveying assembly, and the fourth conveying assembly are all electrically connected to the control box.

[0014] In this embodiment of the invention, the derrick-type lifting slide and trolley automatic exchange device, through the coordinated design of the trolley, slide, and control device, effectively solves the problems of falls, crushing injuries, pinching injuries, occupational injuries, and low efficiency of manual handling existing in the current operation mode. The pallet is used to load workpieces; a pallet loaded with workpieces is called a full pallet, and a pallet without workpieces is called an empty pallet. The trolley has only one loading platform, allowing operators to complete workpiece hoisting from the ground without climbing fixed-height platforms, fundamentally avoiding safety accidents caused by height differences, such as instability, tripping, or falling. When the trolley is pushed into position, the lifting frame is in its initial position, and the feeding end of the first conveying component abuts against the loading platform. The control device activates the first conveying component, automatically transporting the full pallet from the trolley to the first conveying component. Subsequently, the drive component raises the lifting frame to the working position, at which point the discharging end of the first conveying component abuts against the feeding end of the third conveying component, and the feeding end of the second conveying component abuts against the discharging end of the fourth conveying component. The first conveyor assembly transports the full pallet to the third conveyor assembly, which then connects to the production line via a lifting platform, facilitating the operator's removal of the workpiece for subsequent processes. After the workpiece is removed, the full pallet becomes empty and is returned to the discharge end of the fourth conveyor assembly by the lifting platform. The second conveyor assembly receives the empty pallet from the discharge end of the fourth conveyor assembly and transports it to the discharge end, where it abuts against the loading platform of the trolley, automatically returning the empty pallet to the trolley. After the empty pallet return is complete, the lifting frame returns to its initial position, ready for the next cycle. During this process, the third and fourth conveyor assemblies on the fixed frame can temporarily store multiple pallets: the third conveyor assembly can be used to temporarily store full pallets awaiting entry into the production line, and the fourth conveyor assembly can be used to temporarily store empty pallets awaiting return to the trolley. When the lifting frame is in its initial position for trolley docking, the production line can still continue to receive or output pallets via the fixed frame and lifting platform, ensuring continuous production and avoiding production interruptions due to pallet changing operations. The lifting platform can move vertically relative to the fixed frame to transfer empty pallets to the feed end of the fourth conveyor assembly, realizing pallet circulation and transfer within the production line. The control device is electrically connected to the drive assembly, lifting platform, first conveyor assembly, second conveyor assembly, third conveyor assembly, and fourth conveyor assembly, enabling fully automatic control of the lifting, conveying, and docking sequence. No manual intervention is required to push, pull, or move pallets, completely eliminating the risk of hand injuries and lumbar strain caused by manually pushing and pulling heavy pallets in confined spaces or repeatedly bending over to move each empty pallet weighing approximately 10kg. This derrick-type lifting slide and trolley automatic exchange device achieves "one-click pallet changing" through full-process automation, significantly shortening the work cycle and improving loading and unloading efficiency. Simultaneously, the operator's method of lifting and retrieving workpieces and their relative position remain unchanged, requiring no adjustment to operating habits and ensuring excellent operability.By eliminating safety hazards, reducing labor intensity, and improving production continuity and automation, this utility model effectively overcomes the limitations of traditional two-layer trolleys that rely on manual high-altitude operations and manual handling, meets the requirements of lean production for a safe, efficient, and low-load working environment, and helps to reduce working hours and lower vehicle manufacturing costs. This utility model embodiment employs a structure with a single-layer loading platform on a trolley, and a lifting frame that moves vertically back and forth under the control of a drive component, cooperating with a first conveyor component and a second conveyor component to achieve automatic pallet transport. This allows operators to complete workpiece hoisting on the ground without climbing platforms or entering dangerous areas for high-altitude work, avoiding the risk of falls. Simultaneously, full pallets are automatically loaded by the first conveyor component, and empty pallets are automatically returned by the second conveyor component, eliminating the need for manual pushing, pulling, or carrying of heavy objects, thus eliminating pinching injuries and occupational injuries caused by repeated bending and lifting. By setting a third and fourth conveyor component on the fixed frame and cooperating with the lifting platform to achieve temporary storage and transfer of pallets, the production line can continue to operate when the lifting frame is initially docked, improving the level of automation and work efficiency. This effectively solves the safety risks such as falls, crushing injuries, pinching injuries, and occupational injuries during workpiece loading and unloading, as well as the problem of low efficiency in manual handling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the derrick-type lifting slide and trolley automatic exchange device of this utility model; Figure 2 This is a schematic diagram of another perspective of an embodiment of the derrick-type lifting slide and trolley automatic exchange device of this utility model. Figure 3 This is another structural schematic diagram of an embodiment of the derrick-type lifting slide and trolley automatic exchange device of the present utility model. Figure 4 This is a schematic diagram of the structure of a trolley in an embodiment of the automatic exchange device for the derrick-type lifting slide and the trolley of this utility model. Figure 5 This is a schematic diagram of the structure of a fixing mechanism for an embodiment of the automatic exchange device for a derrick-type lifting slide and a trolley according to this utility model. Figure 6 This is a schematic diagram of the structure of a drive assembly of an embodiment of the automatic exchange device for a derrick-type lifting slide and a trolley according to this utility model. Figure 7 This is a schematic diagram of the structure of one embodiment of the frame body of the derrick-type lifting slide and trolley automatic exchange device of this utility model; Figure 8 This is a schematic diagram of the structure of an embodiment of the inlet frame of the derrick-type lifting slide and trolley automatic exchange device of this utility model.

[0017] Explanation of icon numbers: 100. Derrick-type lifting slide and trolley automatic exchange device; 1. Trolley; 11. Loading platform; 2. Slide; 21. Lifting mechanism; 211. Drive assembly; 2111. Base frame; 2112. Drive component; 21121. Motor; 21122. Lead screw; 21123. Nut; 2113. Support arm; 212. Lifting frame; 2121. Frame body; 21211. Working position; 21212. First conveying assembly; 212121. First working position; 21213. Second conveying assembly; 212131. Second working position; 2122. Entrance Frame; 21221, Fifth Electric Roller Assembly; 22, Fixing Mechanism; 221, Fixing Frame; 2211, Third Conveying Assembly; 22111, Third Station; 2212, Fourth Conveying Assembly; 22121, Fourth Station; 222, Lifting Platform; 2221, Machine Frame; 2222, Sixth Electric Roller Assembly; 2223, Drive Component; 3, Control Device; 31, Control Box; 32, Mounting Frame; 33, Buttons; 34, Indicator Light; 4, First Pallet Existence Detection Unit; 5, First Pallet Counting Unit; 6, Position Detection Unit; 7, Safety Light Curtain; 8, Stopper; 200. Pallet.

[0018] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, and back), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0022] In industrial production processes such as automobile manufacturing, the loading, unloading, and transfer of workpieces are crucial for ensuring the continuous operation of the production line. Currently, in the loading area, workpieces are hoisted from a height using overhead cranes or lifting devices. Operators must step onto fixed platforms to enter the trolley area and manually assist in the hoisting operation, precisely positioning the workpieces and placing them on the upper level of the two-tiered trolley. Subsequently, the trolley is pushed to a lifting slide for docking, where operators must manually push the workpieces one by one onto the upper level of the slide and move empty pallets from the lower level of the slide back to the lower level of the trolley. This series of operations is not only cumbersome and highly dependent on manual intervention, but also carries multiple safety risks such as falls, crushing injuries, pinching injuries, and occupational injuries, seriously affecting the health and safety of workers and overall production efficiency.

[0023] After careful investigation, the applicant discovered that the root cause of the aforementioned problems lies in the limitations of the current operating mode in terms of structural design and automation level. Firstly, the trolley employs a two-layer structure, requiring operators to frequently step onto platforms at fixed heights to enter the trolley area. While the workpiece is still suspended by the lifting device, manual adjustment is required to achieve precise placement. Due to the height difference between the platforms and the ground, and the operator's proximity to the suspended load, there is a high risk of tripping or falling due to instability or collisions with the lifting device / workpiece. Furthermore, since the workpiece is manually positioned while suspended, a sudden malfunction of the lifting device or an abnormal operating environment could cause the workpiece to become uncontrollable and fall from a height, posing a serious threat of impact and injury to personnel below. Secondly, after the trolley and slide are connected, the operator needs to manually push 10 loaded workpieces one by one onto the upper level of the slide. This process is laborious and takes place in a confined space, posing a risk of hand injuries from being pinched by the equipment. Simultaneously, 10 empty pallets (each weighing approximately 10 kg) on ​​the lower level of the slide must be manually moved to the lower level of the trolley. The long-term accumulation of this repetitive bending and lifting heavy physical labor will continuously increase the load on the lower back, significantly increasing the probability of occupational health problems such as lumbar muscle strain. Furthermore, the entire process relies on manual labor for auxiliary hoisting, pushing, pulling, and handling operations, resulting in long work cycles and low efficiency, making it difficult to meet the requirements of lean production for automation and ergonomics. Fundamentally, the current system, due to its two-layer trolley and reliance on manual intervention at height for hoisting and positioning, fails to achieve automatic workpiece receiving and transport, lacks an effective mechanism to avoid the risks of working at height, and makes it difficult to control safety hazards and workload.

[0024] The main purpose of this utility model is to propose an automatic exchange device for a derrick-type lifting slide and trolley to solve the safety risks such as falling, crushing, pinching, and occupational injury that exist in the process of manually handling workpieces during loading and unloading, as well as the problem of low efficiency of manual handling.

[0025] Please see Figures 1 to 5In one embodiment of this utility model, the derrick-type lifting slide and trolley automatic exchange device 100 includes a trolley 1, a slide 2, and a control device 3. The trolley 1 has a loading platform 11 for carrying a pallet 200. The slide 2 includes a lifting mechanism 21 and a fixing mechanism 22. The lifting mechanism 21 includes a drive assembly 211 and a lifting frame 212 that is hygienically connected to the drive assembly 211. The drive assembly 211 can drive the lifting frame 212 to move vertically. The lifting frame 212 has an initial position (not shown) and a working position 21211, so that the lifting frame 212 can move vertically. The initial position and the working position 21211 reciprocate between each other; the fixing mechanism 22 includes a fixed frame 221 and a lifting platform 222. The lifting frame 212 is located between the trolley 1 and the fixed frame 221, and the lifting platform 222 is located on the side of the fixed frame 221 away from the lifting frame 212. The lifting frame 212 is vertically arranged with a first conveying component 21212 and a second conveying component 21213. The fixed frame 221 is vertically arranged with a third conveying component 2211 and a fourth conveying component 2212. The lifting platform 222 can move vertically relative to the fixed frame 221. The lifting platform 222 is used for... The pallet 200 is moved from the discharge end of the third conveying assembly 2211 to the feed end of the fourth conveying assembly 2212. When the lifting frame 212 is in the initial position, the loading platform 11 can abut against the feed end of the first conveying assembly 21212, so that the pallet 200 can move from the loading platform 11 to the first conveying assembly 21212. When the lifting frame 212 is in the working position 21211, the discharge end of the first conveying assembly 21212 can abut against the feed end of the third conveying assembly 2211, so that the first conveying assembly 21212 can move the pallet 200 to the third conveying assembly 2211. The infeed end of the second conveying component 21213 can abut against the discharge end of the fourth conveying component 2212, so that the fourth conveying component 2212 can move the pallet 200 to the second conveying component 21213. The discharge end of the second conveying component 21213 can abut against the loading platform 11, so that the second conveying component 21213 can move the pallet 200 to the loading platform 11. The drive component 211, the lifting platform 222, the first conveying component 21212, the second conveying component 21213, the third conveying component 2211, and the fourth conveying component 2212 are all electrically connected to the control device 3.

[0026] In this embodiment of the utility model, the derrick-type lifting slide and trolley automatic exchange device 100, through the coordinated design of the trolley 1, the slide 2, and the control device 3, effectively solves the problems of falls, crushing injuries, pinching injuries, occupational injuries, and low efficiency of manual handling existing in the current operation mode. The pallet 200 is used to load workpieces; a pallet 200 loaded with workpieces is called a full pallet, and a pallet 200 without workpieces is called an empty pallet. The trolley 1 has only one loading platform 11, allowing operators to complete workpiece hoisting from the ground without climbing fixed-height platforms, fundamentally avoiding safety accidents caused by height differences, such as instability, tripping, or falling. When the trolley 1 is pushed into place, the lifting frame 212 is in its initial position, and the feeding end of the first conveying component 21212 abuts against the loading platform 11. The control device 3 activates the first conveying component 21212, automatically conveying the full pallet on the trolley 1 to the first conveying component 21212. Subsequently, the drive assembly 211 raises the lifting frame 212 to the working position 21211. At this time, the discharge end of the first conveying assembly 21212 abuts against the feed end of the third conveying assembly 2211, and the feed end of the second conveying assembly 21213 abuts against the discharge end of the fourth conveying assembly 2212. The first conveying assembly 21212 transports the full pallet to the third conveying assembly 2211, and then connects with the production line via the lifting platform 222, facilitating the operator to remove the workpiece for subsequent processes. After the workpiece is removed, the full pallet becomes an empty pallet and is returned to the discharge end of the fourth conveying assembly 2212 by the lifting platform 222. The second conveying assembly 21213 receives the empty pallet from the discharge end of the fourth conveying assembly 2212 and transports it to the discharge end, abutting against the loading platform 11 of the trolley 1, thereby automatically returning the empty pallet to the trolley 1. After the empty pallet is returned, the lifting frame 212 returns to the initial position, ready for the next cycle. During this process, the third conveying assembly 2211 and the fourth conveying assembly 2212 on the fixed frame 221 can temporarily store multiple pallets 200: the third conveying assembly 2211 can be used to temporarily store full pallets waiting to enter the production line, and the fourth conveying assembly 2212 can be used to temporarily store empty pallets waiting to return to the trolley 1. When the lifting frame 212 is in the initial position for docking with the trolley 1, the production line can still continue to receive or output pallets 200 through the fixed frame 221 and the lifting platform 222, ensuring continuous operation of the production process and avoiding production interruptions caused by pallet changing operations. The lifting platform 222 can move vertically relative to the fixed frame 221 to transfer empty pallets to the feeding end of the fourth conveying assembly 2212, realizing the cyclic transfer of pallets 200 within the production line.The control device 3 is electrically connected to the drive assembly 211, the lifting platform 222, the first conveying assembly 21212, the second conveying assembly 21213, the third conveying assembly 2211, and the fourth conveying assembly 2212, achieving fully automatic control of the lifting, conveying, and docking sequence. No manual intervention is required to push, pull, or move the pallet 200, completely eliminating the risk of hand injuries and lumbar strain caused by operators manually pushing and pulling heavy-duty pallets 200 in confined spaces or repeatedly bending over to move each empty pallet weighing approximately 10kg. This derrick-type lifting slide and trolley automatic exchange device 100 achieves "one-click pallet changing" through full-process automation, significantly shortening the work cycle and improving loading and unloading efficiency. Simultaneously, the operator's method of lifting and retrieving workpieces and their relative position remain unchanged, requiring no adjustment to operating habits and ensuring good operability. By eliminating safety hazards, reducing labor intensity, and improving production continuity and automation, this utility model effectively overcomes the limitations of traditional two-layer trolleys that rely on manual high-altitude operations and manual handling, meets the requirements of lean production for a safe, efficient, and low-load working environment, and helps to reduce working hours and lower vehicle manufacturing costs.

[0027] The technical solution of this utility model adopts a structure in which a trolley 1 has only one loading platform 11, and a lifting frame 212 moves back and forth in the vertical direction under the control of the drive component 211, cooperating with the first conveying component 21212 and the second conveying component 21213 to realize the automatic conveying of the pallet 200. This allows the operator to complete the workpiece hoisting on the ground without having to climb the platform or enter the danger zone for high-altitude work, avoiding the risk of falling. At the same time, full pallets are automatically loaded by the first conveying component 21212, and empty pallets are automatically loaded by the second conveying component 21213. Automatic return eliminates the need for manual pushing, pulling, or carrying of heavy objects, thus preventing pinching injuries and occupational injuries caused by repeated bending and lifting. The third conveyor component 2211 and the fourth conveyor component 2212 are set on the fixed frame 221 and work in conjunction with the lifting platform 222 to realize the temporary storage and transfer of the pallet 200. This ensures the continuous operation of the production line when the lifting frame 212 is initially docked, improving the level of automation and work efficiency. This effectively solves the safety risks such as falling, crushing, pinching, and occupational injuries during the loading and unloading of workpieces, as well as the problem of low efficiency of manual handling.

[0028] Please see Figure 2 and Figure 6In one embodiment, the drive assembly 211 includes a base frame 2111, a drive component 2112, and a support arm 2113. The drive component 2112 is connected to the base frame 2111 and is drively connected to the support arm 2113. The drive component 2112 can drive the support arm 2113 to move vertically relative to the base frame 2111. The support arm 2113 is connected to the lifting frame 212, so that the drive component 2112 can drive the lifting frame 212 to move vertically via the support arm 2113. The drive component 2112 is electrically connected to the control device 3. The connection is as follows: Specifically, the base frame 2111 provides stable support for the drive component 211, and the support arm 2113 reliably transmits the power of the drive component 2112 to the lifting frame 212, ensuring a smooth and non-deviation-free lifting process. The control device 3 automatically controls the movement of the drive component 2112 according to the operating sequence of the derrick-type lifting slide and the trolley automatic exchange device 100, so that the lifting frame 212 stops precisely, ensuring that it docks with the loading platform 11 of the trolley 1 in the initial position and with the conveying component of the fixed frame 221 in the working position 21211, realizing the smooth transfer of the pallet 200. This drive structure is reliable in transmission and precise in control, which not only improves the stability and repeatability of the lifting action, but also supports the coordinated automation with conveying and other links, enhancing the overall reliability and operating efficiency of the derrick-type lifting slide and the trolley automatic exchange device 100.

[0029] Please see Figure 6In one embodiment, the driving component 2112 includes a motor 21121, a lead screw 21122, and a nut 21123. The motor 21121 is connected to the base frame 2111 and is driven by the lead screw 21122. The lead screw 21122 and the nut 21123 are threaded together, and the nut 21123 is connected to the support arm 2113, so that the motor 21121 can drive the lifting frame 212 to move vertically through the lead screw 21122, the nut 21123, and the support arm 2113. The motor 21121 is electrically connected to the control device 3. Specifically, the motor 21121 serves as a power source, and its rotational motion is converted into the linear motion of the nut 21123 through the helical transmission of the lead screw 21122 and the nut 21123. This linear motion is then used to drive the lifting frame 212 to move smoothly between the initial position and the working position 21211 via the support arm 2113. The lead screw 21122 and nut 21123 transmission features high precision, smooth operation, and good self-locking, ensuring that the lifting frame 212 accurately stops at the target position. This guarantees reliable docking with the loading platform 11 of the trolley 1 in the initial position and accurate connection with the third and fourth conveying components 2211 and 2212 on the fixed frame 221 in the working position 21211. Simultaneously, the motor 21121 is automatically controlled by the control device 3, enabling precise control of start / stop, forward / reverse rotation, and movement timing, allowing the lifting action to coordinate with the pallet 200's conveying and return processes. This drive structure not only improves the stability and positioning accuracy of the lifting process but also enhances the automation level and operational safety of the derrick-type lifting slide and the trolley automatic exchange device 100, effectively supporting efficient and reliable operation throughout the entire workpiece loading and unloading process.

[0030] According to one embodiment of this utility model, the driving component 2112 includes a motor 21121, a gear, and a rack. The motor 21121 is connected to the base frame 2111, and the output shaft of the motor 21121 is connected to the gear drive. The rack is fixed vertically on the support arm 2113, and the gear meshes with the rack. The motor 21121 is electrically connected to the control device 3. When the motor 21121 drives the gear to rotate, the gear rolls along the rack, thereby driving the support arm 2113 and the lifting frame 212 to move up and down. This structure is compact, has a strong load-bearing capacity, high positioning accuracy, and good self-locking performance, making it suitable for heavy-duty or precise positioning applications.

[0031] According to another embodiment of this utility model, the driving component 2112 includes a hydraulic cylinder or a pneumatic cylinder. The cylinder body of the hydraulic cylinder or pneumatic cylinder is hinged or fixedly connected to the base frame 2111. The piston rod is connected to the support arm 2113 or the lifting frame 212. The hydraulic cylinder is connected to the hydraulic pump station through a hydraulic pipeline, and the pneumatic cylinder is connected to the air source and solenoid valve through an air pipe. The hydraulic pump station or solenoid valve is electrically connected to the control device 3. The control device 3 controls the start and stop of the hydraulic pump station or the reversal of the solenoid valve, causing the piston rod of the hydraulic cylinder or pneumatic cylinder to extend and retract, thereby driving the lifting frame 212 to rise and fall. This solution has strong power and rapid response. The hydraulic drive is suitable for high-load and high-rigidity applications, while the pneumatic drive has a simple structure and is easy to maintain, making it suitable for clean environments or medium to light-load applications.

[0032] Please see Figure 1In one embodiment, the derrick-type lifting slide and trolley automatic exchange device 100 further includes a detection device (not shown in the figure). The detection device includes a pallet presence detection unit and a pallet counting unit, both of which are electrically connected to the control device 3. There are multiple pallet presence detection units, which are divided into a first pallet presence detection unit 4, a second pallet presence detection unit (not shown in the figure), a third pallet presence detection unit (not shown in the figure), and a fourth pallet presence detection unit (not shown in the figure). The first pallet presence detection unit 4 and the second pallet presence detection unit are vertically spaced on the lifting frame 212, and the third pallet presence detection unit... The first pallet presence detection unit and the fourth pallet presence detection unit are vertically spaced on the fixed frame 221. The first pallet presence detection unit 4 is used to detect whether a pallet 200 is present on the first conveying assembly 21212; the second pallet presence detection unit is used to detect whether a pallet 200 is present on the second conveying assembly 21213; the third pallet presence detection unit is used to detect whether a pallet 200 is present on the third conveying assembly 2211; and the fourth pallet presence detection unit is used to detect whether a pallet 200 is present on the fourth conveying assembly 2212. The first conveying assembly 21212 is provided with a first workstation 212121, and the second conveying assembly 21213 is provided with a second workstation. Positions 212131 and 22131 are provided. A third workstation 22111 is provided on the third conveying assembly 2211, and a fourth workstation 22121 is provided on the fourth conveying assembly 2212. Multiple pallet counting units are provided, including a first pallet counting unit 5, a second pallet counting unit (not shown), a third pallet counting unit (not shown), and a fourth pallet counting unit (not shown). The first and second pallet counting units are vertically spaced on the lifting frame 212, while the third and fourth pallet counting units are vertically spaced on the fixed frame 221. The first pallet counting unit 5 is used to detect the first workstation 212131. The presence of pallet 200 on station 2121 is detected by a second pallet counting unit, a third pallet counting unit, and a fourth pallet counting unit. Specifically, the four pallet presence detection units are used to detect whether pallet 200 exists on the corresponding conveying components. This allows for real-time determination of whether each conveying component is occupied, preventing collisions or blockages caused by continued conveying with existing pallets 200, and improving the operational safety of the derrick-type lifting slide and trolley automatic exchange device 100.Furthermore, by setting up four pallet counting units, it can accurately detect whether there is a pallet 200 at the corresponding workstation, realize the precise positioning of the pallet 200 and the closed-loop monitoring of its flow status, and avoid the misalignment or omission of the pallet 200. All pallet presence detection units and pallet counting units are electrically connected to the control device 3, providing reliable signal feedback for the automatic control of the derrick-type lifting slide and the trolley automatic exchange device 100, ensuring that lifting, conveying and other actions are coordinated and orderly, thereby effectively solving the safety risks and low efficiency caused by manual intervention in the process of loading and unloading workpieces.

[0033] Please see Figures 1 to 3 In one embodiment, there are multiple first workstations 212121, and the number of first pallet counting units 5 is the same as that of the first workstations 212121 and they are set up one-to-one; and / or, there are multiple second workstations 212131, and the number of second pallet counting units is the same as that of the second workstations 212131 and they are set up one-to-one; and / or, there is at least one third workstation 22111, and the number of third pallet counting units is the same as that of the third workstations 22111 and they are set up one-to-one; and / or, there is at least one fourth workstation 22121, and the number of fourth pallet counting units is the same as that of the fourth workstations 22121 and they are set up one-to-one; specifically, the derrick-type lifting slide and trolley automatic exchange device 100 can flexibly configure the number of workstations according to the functional positioning of different areas, while ensuring the efficient flow of a large number of pallets 200, and optimizing the equipment space layout and resource utilization. In this embodiment, there are 10 first workstations 212121 and 212131 to match the operation mode of the trolley 1 exchanging 10 full or empty pallets at a time; there are 2 third workstations 22111 and 22121 to meet the needs of short-term buffering and high-frequency turnover at the production line end. Each workstation is equipped with an independent pallet counting unit to achieve "one detection per workstation". This not only accurately monitors the existence status of each pallet 200 and avoids misjudgment caused by shared sensors, but also supports the individual tracking and closed-loop management of 10 pallets 200, ensuring accurate loading and return of the entire batch of pallets 200. The control device 3 judges the process progress in real time based on the feedback signals of each pallet counting unit. It promptly alarms or stops the machine when there is a lack of pallets, a blockage, or a process abnormality. This significantly improves the operational reliability, automation level, and maintainability of the derrick-type lifting slide and trolley automatic exchange device 100, while enhancing its adaptability to different production cycles and process requirements.

[0034] Please see Figure 1 and Figure 3In one embodiment, the pallet presence detection unit includes an area scanner; and / or, the pallet counting unit includes a photoelectric sensor. Specifically, four area scanners are used to scan the entire area of ​​each of the four conveying components. When a pallet 200 enters a conveying component, its beam is blocked, thereby determining that the conveying component is occupied. This prevents the derrick-type lifting slide and trolley automatic exchange device 100 from continuing to send pallets 200 to conveying components with existing pallets 200, avoiding collisions or blockages. The photoelectric sensors are configured one-to-one with the workstations on the four conveying components. Each photoelectric sensor is used to detect whether a pallet 200 is present at its workstation, achieving accurate identification of the pallet 200's position. Through this configuration, the area scanner undertakes the task of quickly determining the "overall presence or absence," ensuring operational safety; the photoelectric sensor undertakes the task of accurately detecting the "specific location," supporting multi-workstation parallel management and closed-loop process control. The two work together to improve the reliability and response speed of detection, and optimize the sensor layout. While ensuring the safe and efficient operation of the derrick-type lifting slide and the trolley automatic exchange device 100, it reduces the installation complexity and equipment cost, making it particularly suitable for industrial scenarios with large-volume automatic pallet exchange 200.

[0035] According to one embodiment of the present invention, the tray presence detection unit can adopt a structure such as a through-beam photoelectric switch, a reflective photoelectric sensor, or an inductive proximity switch, and the tray counting unit can adopt a structure such as a photoelectric sensor, a proximity switch, a fiber optic sensor, a vision sensor, or a pressure sensor.

[0036] Please see Figure 7 and Figure 8In one embodiment, the lifting frame 212 includes a frame body 2121 and an inlet frame 2122. The inlet frame 2122 is located between the trolley 1 and the frame body 2121. A fixed frame 221 is provided on the side of the frame body 2121 away from the inlet frame 2122. A first conveying assembly 21212 and a second conveying assembly 21213 are sequentially arranged in the vertical direction on the frame body 2121. A driving assembly 211 can drive the frame body 2121 to move vertically relative to the inlet frame 2122. The frame body 2121 has an initial position and a working position 21211, so that the frame body 2121 can reciprocate between the initial position and the working position 21211. The feeding end of the inlet frame 2122 can abut against the loading platform 11, and the discharging end of the inlet frame 2122 can abut against the feeding end of the first conveying assembly 21212 or the discharging end of the second conveying assembly 21213. The material end abuts; specifically, this structure allows the pallet 200 on the trolley 1 to smoothly enter the lifting slide 2 via the loading platform 11, the entrance frame 2122, and the first conveying component 21212, or to smoothly return via the second conveying component 21213, the entrance frame 2122, and the loading platform 11, realizing layered independent transmission of full pallet loading and empty pallet return; at the same time, the entrance frame 2122, as a transition connecting section, maintains stable docking with the trolley 1 platform during the lifting and lowering of the frame body 2121, ensuring the continuity and centering of pallet 200 transmission, avoiding jamming or collision caused by height changes or positional shifts, improving the reliability and safety of the operation of the derrick-type lifting slide and the trolley automatic exchange device 100, and effectively solving the safety risks and low efficiency problems caused by unstable docking and poor transmission during the loading and unloading of workpieces.

[0037] Please see Figure 1 , Figure 3 and Figure 7In one embodiment, a position detection unit 6 is provided on the side of the entrance frame 2122 facing the trolley 1. The position detection unit 6 is electrically connected to the control module and is used to detect whether the trolley 1 is properly aligned with the entrance frame 2122; and / or, a safety light curtain 7 is provided on the side of the entrance frame 2122 facing the trolley 1. The safety light curtain 7 is electrically connected to the control device 3 and is used to detect whether a person or object has entered the entrance frame 2122; and / or, a position detection unit 6 is provided on the side of the frame body 2121 facing the entrance frame 2122. A stopper 8 is provided to restrict the tray 200 from sliding out of the discharge end of the first conveying assembly 21212. Specifically, a position detection unit 6 is used to detect whether the trolley 1 is properly aligned with the inlet frame 2122. This ensures that the derrick-type lifting slide and the automatic trolley exchange device 100 only start the conveying or lifting action of the tray 200 after the trolley 1 is accurately positioned. This avoids tray 200 conveying jams or equipment collisions caused by trolley 1 position deviations, improving the reliability and safety of the derrick-type lifting slide and the automatic trolley exchange device 100 operation. A safety light curtain 7 is set to detect whether personnel or objects enter the area of ​​the inlet frame 2122. When an abnormal intrusion is detected, the control device 3 immediately stops the operation of the derrick-type lifting slide and the automatic trolley exchange device 100 to prevent pinching, collisions and other safety accidents, effectively ensuring the safety of operators. By installing a stopper 8 on the side of the frame body 2121 facing the entrance frame 2122, the stopper 8 can prevent the pallet 200 from accidentally sliding out of the discharge end of the first conveying assembly 21212, especially when the entrance frame 2122 and the trolley 1 are not docked, thus avoiding the risk of an empty pallet falling. This setup, through multiple safety mechanisms including docking status monitoring, personnel intrusion protection, and pallet 200 anti-slip, significantly improves the safety and stability of the derrick-type lifting slide and trolley automatic exchange device 100 during automatic operation, effectively solving the safety risks caused by inaccurate positioning, accidental personnel entry, or pallet 200 slippage during workpiece loading and unloading.

[0038] Please see Figure 1 , Figure 5 , Figure 7 and Figure 8In one embodiment, the first conveying assembly 21212 includes a first electric roller assembly; and / or, the second conveying assembly 21213 includes a second electric roller assembly; and / or, the third conveying assembly 2211 includes a third electric roller assembly; and / or, the fourth conveying assembly 2212 includes a fourth electric roller assembly; and / or, the inlet frame 2122 is provided with a fifth electric roller assembly 21221, which is electrically connected to the control device 3; and / or, the lifting platform 222 includes a frame 2221, a sixth electric roller assembly 2222, a drive unit 2223, and a pedal (not shown), the drive unit 2223 being connected to the frame The drive unit 2223 is connected to the sixth electric roller assembly 2222 via a transmission connection. The drive unit 2223 can drive the sixth electric roller assembly 2222 to move vertically relative to the frame 2221, so that the sixth electric roller assembly 2222 can move the pallet 200 from the discharge end of the third conveying component 2211 to the feed end of the fourth conveying component 2212. The pedal is rotatably mounted on the frame 2221. The pedal, drive unit 2223, and sixth electric roller assembly 2222 are all electrically connected to the control device 3. Specifically, each conveying component realizes the automatic conveying of the pallet 200 through the corresponding electric roller assembly, without the need for manual pushing and pulling. Among them, the first electric roller assembly is used to convey the full pallet on the trolley 1 to the lifting frame 212 via the inlet frame 2122. The second electric roller assembly is used to convey the empty pallet from the lifting frame 212 back to the trolley 1. The third and fourth electric roller assemblies are used to complete the receiving and returning of the pallet 200 on the side of the fixed frame 221. The electric roller assembly provides active driving force, enabling the pallet 200 to start and stop smoothly and run at a constant speed in a horizontal state. This avoids the phenomenon of the pallet 200 impacting the lower conveying components at high speed due to the accumulation of acceleration when sliding on an inclined slide relying on gravity. It effectively prevents pallet 200 deformation, workpiece displacement, workpiece damage, and noise problems caused by impact, improving the stability of the conveying process and the service life of the equipment. By setting a fifth electric roller assembly 21221 on the inlet frame 2122 and electrically connecting it to the control device 3, the pallet 200 can be smoothly transferred from the loading platform 11 to the inlet frame 2122 when the trolley 1 docks with the slide table 2, ensuring smooth feeding and avoiding the risk of slippage and collision caused by height differences. The drive unit 2223 is connected to the frame 2221 and drives the sixth electric roller assembly 2222 to move vertically relative to the frame 2221, so that the sixth electric roller assembly 2222 can transfer the empty pallet from the discharge end of the third conveying component 2211 to the feed end of the fourth conveying component 2212, thus completing the cyclic transfer of the production line end pallet 200.The pedal is rotatably mounted on the frame 2221. A pressure sensor or limit switch can be installed below the pedal. When an operator steps on the pedal, the sensor detects a pressure signal and transmits it to the control device 3. The control device 3 then activates the drive unit 2223, causing the sixth electric roller assembly 2222 to descend to the feed end height of the fourth conveying assembly 2212. Simultaneously, the sixth electric roller assembly 2222 starts operating, automatically conveying the empty pallet to the fourth conveying assembly 2212, achieving precise pallet 200 transfer through human-machine collaboration. When the pedal is not stepped on, it is in a horizontal or closed state, preventing personnel from accidentally entering the lifting area and ensuring operational safety. In this embodiment, the drive unit 2223 can be a cylinder, hydraulic cylinder, or electric push rod to achieve the vertical lifting movement of the sixth electric roller assembly 2222 relative to the frame 2221.

[0039] Please see Figure 1 In one embodiment, the control device 3 includes a control box 31, a mounting frame 32, buttons 33, and indicator lights 34. The buttons 33 are mounted on the mounting frame 32, and the indicator lights 34 are mounted on the side of the lifting frame 212 facing the trolley 1. The buttons 33, indicator lights 34, drive assembly 211, lifting platform 222, first conveying assembly 21212, second conveying assembly 21213, third conveying assembly 2211, and fourth conveying assembly 2212 are all electrically connected to the control box 31. Specifically, by setting up the control device 3, centralized control and status feedback of each actuator of the derrick-type lifting slide and trolley automatic exchange device 100 are achieved. In this embodiment, there are three buttons: a docking completion button, a work completion button, and a work end button. Operators can send start and stop commands to the control box 31 via these buttons. The control box 31 coordinates the lifting and lowering actions of the drive component 211, the conveying of the pallets 200 of each conveying component, and the transfer actions of the lifting platform 222 according to preset logic, achieving fully automated operation. Simultaneously, indicator lights 34 display the real-time operating status of the derrick-type lifting slide and the automatic trolley exchange device 100 (e.g., standby, running, fault), facilitating remote observation of equipment conditions and timely response to abnormal situations by operators. This structure integrates the human-machine interface unit in a convenient operating location, improving the controllability and operational safety of the derrick-type lifting slide and the automatic trolley exchange device 100, and effectively solving the problems of low efficiency and risk of misoperation caused by dispersed operations and opaque status in traditional manual handling modes.

[0040] The workflow of the derrick-type lifting slide and trolley automatic exchange device 100 in this embodiment is as follows: Initially, the lifting frame 212 is in the initial position, the first electric roller group is connected to the discharge end of the inlet frame 2122, the second electric roller group is located below, the stopper 8 is in the open state to prevent the tray 200 from accidentally sliding out, and the indicator light 34 is off; the trolley 1 drives in and connects with the inlet frame 2122. The position detection unit 6 set on the side of the inlet frame 2122 facing the trolley 1 detects the connection status in real time. If the connection is not in place, the indicator light 34 is off and readjustment is required. If the connection is in place, the indicator light 34 is green, indicating that the next step can be carried out; the operator presses the "connection complete button" to instruct... The data is transmitted to control box 31, which then starts the fifth electric roller group 21221 and the first electric roller group. The operator pushes the full pallet from the loading platform 11 of the trolley 1, and it is smoothly transferred from the fifth electric roller group 21221 to the first electric roller group to complete the loading. After all the full pallets are pushed in, the operator presses the "work completed" button. After receiving the signal, control box 31 scans and counts the pallets 200 on the first electric roller group through the first pallet presence detection unit 4 (area scanner) and the first pallet counting unit 5 (photoelectric sensor). If the number is less than 10, the system continues to feed more pallets. If it is confirmed that there are 10 pallets, the first electric roller group stops operating and controls the drive component 211 to raise the lifting frame 212 from the initial position to the... After the lifting frame 212 is in position at workstation 21211, the first electric roller group aligns with the third electric roller group on the fixed frame 221. The first electric roller group, the third electric roller group, and the sixth electric roller group 2222 on the lifting platform 222 start synchronously, moving the frontmost (closest to the production line) pallet one workstation towards the production line, completing one automatic loading cycle. After the operator removes the workpiece from the production line side, they step on the pedal. The pressure sensor under the pedal detects the signal and transmits it to the control device 3. The control device 3 activates the drive component 2223 to lower the sixth electric roller group 2222 to the feeding end height of the fourth electric roller group. Subsequently, the sixth electric roller group 2222, the fourth electric roller group, and the second electric roller group start. The sixth electric roller group 2222 moves the empty pallet to the feeding end of the fourth electric roller group. The fourth electric roller group then conveys it one station towards the second electric roller group. The second electric roller group rotates to continuously receive empty pallets, while the stopper 8 on the frame body 2121 remains open to prevent the empty pallet from accidentally sliding out of the discharge end of the second electric roller group. When the second pallet counting unit detects that there are 10 empty pallets on the second electric roller group, the control device 3 stops the conveying of the fourth electric roller group. At this time, the trolley 1 is in the docking state, the control device 3 closes the stopper 8, and the second electric roller group rotates to convey the 10 empty pallets back to the trolley 1 in sequence. The second pallet presence detection unit confirms in real time whether each pallet 200 has been successfully delivered.After all empty pallets have been returned, the operator presses the "Work End Button," and the control box 31 stops the second electric roller assembly. The operator then detaches the trolley 1. After the control box 31 confirms through the first pallet presence detection unit 4 that there are no pallets 200 in the first electric roller assembly, it controls the drive assembly 211 to lower and reset the lifting frame 212 to its initial position, restoring the initial state and awaiting the next cycle. This process, through multiple detection and safety protection mechanisms, achieves full automation and high safety in pallet 200 exchange, effectively solving problems such as falls, injuries, pinching injuries, occupational injuries, and low efficiency during manual handling.

[0041] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A derrick-type lift skid and buggy automatic exchange device, characterized by, The automatic exchange device between the derrick-type lifting slide and the trolley includes: A trolley having a loading platform for supporting pallets; A slide table, the slide table including a lifting mechanism and a fixing mechanism, the lifting mechanism including a drive assembly and a lifting frame pulsatingly connected to the drive assembly, the drive assembly being able to drive the lifting frame to move in a vertical direction, the lifting frame having an initial position and a working position, so that the lifting frame can reciprocate between the initial position and the working position; The fixing mechanism includes a fixed frame and a lifting platform. The lifting frame is located between the trolley and the fixed frame, and the lifting platform is located on the side of the fixed frame away from the lifting frame. The lifting frame is provided with a first conveying component and a second conveying component in sequence along the vertical direction. The fixed frame is provided with a third conveying component and a fourth conveying component in sequence along the vertical direction. The lifting platform is movable relative to the fixed frame in the vertical direction. The lifting platform is used to move the pallet from the discharge end of the third conveying component to the inlet end of the fourth conveying component. When the lifting frame is in the initial position, the loading platform can abut against the feed end of the first conveying component, so that the pallet can move from the loading platform to the first conveying component; When the lifting frame is located at the working position, the discharge end of the first conveying component can abut against the inlet end of the third conveying component, so that the first conveying component can move the pallet to the third conveying component; the inlet end of the second conveying component can abut against the discharge end of the fourth conveying component, so that the fourth conveying component can move the pallet to the second conveying component; and the discharge end of the second conveying component can abut against the loading platform, so that the second conveying component can move the pallet to the loading platform. The control device includes the drive assembly, the lifting platform, the first conveying assembly, the second conveying assembly, the third conveying assembly, and the fourth conveying assembly, all of which are electrically connected to the control device.

2. The automatic derrick-lift skid and buggy exchange apparatus of claim 1, wherein, The drive assembly includes a base frame, a drive component, and a support arm. The drive component is connected to the base frame and is drively connected to the support arm. The drive component can drive the support arm to move relative to the base frame in the vertical direction. The support arm is connected to the lifting frame so that the drive component can drive the lifting frame to move in the vertical direction through the support arm. The drive component is electrically connected to the control device.

3. The automatic exchange device for the derrick-type lifting slide and trolley as described in claim 2, characterized in that, The driving component includes a motor, a lead screw, and a nut. The motor is connected to the base frame and is driven by the lead screw. The lead screw is threaded into the nut, and the nut is connected to the support arm, so that the motor can drive the lifting frame to move in the vertical direction through the lead screw, the nut, and the support arm. The motor is electrically connected to the control device.

4. The automatic derrick-lift skid and buggy exchange apparatus of claim 1, wherein, The derrick-type lifting slide and trolley automatic exchange device also includes a detection device, which includes a pallet presence detection unit and a pallet counting unit. Both the pallet presence detection unit and the pallet counting unit are electrically connected to the control device. The number of pallet presence detection units is multiple, and these multiple pallet presence detection units are divided into a first pallet presence detection unit, a second pallet presence detection unit, a third pallet presence detection unit, and a fourth pallet presence detection unit. The first pallet presence detection unit and the second pallet presence detection unit are arranged at intervals along the vertical direction on the lifting frame, and the third pallet presence detection unit and the fourth pallet presence detection unit are arranged at intervals along the vertical direction on the fixed frame. The first pallet presence detection unit is used to detect whether the pallet is present on the first conveying component, the second pallet presence detection unit is used to detect whether the pallet is present on the second conveying component, the third pallet presence detection unit is used to detect whether the pallet is present on the third conveying component, and the fourth pallet presence detection unit is used to detect whether the pallet is present on the fourth conveying component. The first conveying assembly has a first workstation, the second conveying assembly has a second workstation, the third conveying assembly has a third workstation, and the fourth conveying assembly has a fourth workstation. There are multiple pallet counting units, which are divided into a first pallet counting unit, a second pallet counting unit, a third pallet counting unit, and a fourth pallet counting unit. The first and second pallet counting units are spaced apart along the vertical direction on the lifting frame, and the third and fourth pallet counting units are spaced apart along the vertical direction on the fixed frame. The first pallet counting unit is used to detect whether a pallet is present at the first workstation, the second pallet counting unit is used to detect whether a pallet is present at the second workstation, the third pallet counting unit is used to detect whether a pallet is present at the third workstation, and the fourth pallet counting unit is used to detect whether a pallet is present at the fourth workstation.

5. The automatic derrick-lift skid and buggy exchange apparatus of claim 4, wherein, There are multiple first workstations, and the number of first pallet counting units is consistent with the number of first workstations and is set up in a one-to-one correspondence. And / or, There are multiple second workstations, and the number of second tray counting units is the same as the number of second workstations and they are set up in a one-to-one correspondence. And / or, The number of the third workstation is at least one, and the number of the third tray counting units is consistent with the number of the third workstations and is set in a one-to-one correspondence. And / or, The number of the fourth workstation is at least one, and the number of the fourth tray counting units is consistent with the number of the fourth workstations and is set up in a one-to-one correspondence.

6. The automatic derrick-lift skid and buggy exchange apparatus of claim 5, wherein, The tray presence detection unit includes an area scanner; And / or, The tray counting unit includes a photoelectric sensor.

7. The automatic derrick-lift skid and buggy exchange apparatus of any one of claims 1 to 6, wherein, The lifting frame includes a frame body and an inlet frame. The inlet frame is located between the trolley and the frame body. A fixed frame is provided on the side of the frame body away from the inlet frame. A first conveying component and a second conveying component are sequentially arranged on the frame body along the vertical direction. The driving component can drive the frame body to move relative to the inlet frame in the vertical direction. The frame body has an initial position and a working position so that the frame body can reciprocate between the initial position and the working position. The feeding end of the inlet frame can abut against the loading platform, and the discharging end of the inlet frame can abut against the feeding end of the first conveying component or the discharging end of the second conveying component.

8. The automatic derrick-lift skid and buggy exchange apparatus of claim 7, wherein, A position detection unit is provided on the side of the entrance frame facing the trolley. The position detection unit is electrically connected to the control module and is used to detect whether the trolley is properly docked with the entrance frame. And / or, A safety light curtain is provided on the side of the entrance frame facing the trolley. The safety light curtain is electrically connected to the control device and is used to detect whether a person or object enters the entrance frame. And / or, A stopper is provided on the side of the frame body facing the inlet frame to prevent the tray from sliding out from the discharge end of the first conveying assembly.

9. The automatic derrick-lift skid and buggy exchange apparatus of claim 7, wherein, The first conveying assembly includes a first electric roller assembly; And / or, The second conveying assembly includes a second electric roller assembly; And / or, The third conveying assembly includes a third electric roller assembly; And / or, The fourth conveying assembly includes a fourth electric roller assembly; And / or, The entrance frame is equipped with a fifth electric roller assembly, which is electrically connected to the control device. And / or, The lifting platform includes a frame, a sixth electric roller assembly, a drive unit, and a pedal. The drive unit is connected to the frame and is drively connected to the sixth electric roller assembly. The drive unit can drive the sixth electric roller assembly to move relative to the frame in the vertical direction, so that the sixth electric roller assembly can move the tray from the discharge end of the third conveying component to the feed end of the fourth conveying component. The pedal is rotatably mounted on the frame. The pedal, the drive unit, and the sixth electric roller assembly are all electrically connected to the control device.

10. The automatic derrick-lift skid and buggy exchange apparatus of any one of claims 1 to 6, wherein, The control device includes a control box, a mounting frame, buttons, and indicator lights. The buttons are located on the mounting frame, and the indicator lights are located on the side of the lifting frame facing the trolley. The buttons, indicator lights, drive assembly, lifting platform, first conveying assembly, second conveying assembly, third conveying assembly, and fourth conveying assembly are all electrically connected to the control box.

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