A hoisting device for a truss laminated slab production line

Abstract

The present application discloses a kind of hoisting equipment for truss laminated slab production line, including the portal travelling mechanism that runs on first track, the upper end of the portal travelling mechanism is horizontally movable and is provided with positioning vehicle, the lower side of the positioning vehicle is connected with suspension by retractable chain, further comprising: multiple vertical poles, which are arranged on the lower side of the suspension;Barb, one end is hinged to the lower end of the vertical pole, the other end is elastically movable and is arranged upwardly inclined;Storage assembly, which is arranged on the vertical pole, is used to drive the barb to switch and keep in storage position.The present application, when laminated slab must be separated from barb, suspension first lowers laminated slab, and makes barb move downward, completes the separation of truss and lifting space, then storage assembly can switch and keep barb in storage position, then, suspension moves upward again, barb will not hook truss again, obviously, barb and truss are automatically connected and separated, which makes the automatic demolding and transfer of laminated slab more convenient, and saves labor.

Description

Technical Field

[0001] This invention relates to the field of composite slab production line equipment technology, specifically to a lifting device for a truss composite slab production line. Background Technology

[0002] Reinforced truss composite slabs are a new type of building formwork, characterized by their lightweight, durability, good weather resistance, and stability. These slabs are typically constructed from fiber cement boards, galvanized steel mesh, embedded joists, and steel trusses. During use, the pouring of mortar further strengthens the composite slabs. Currently, most composite slabs are cast in molds. After solidification, demolding and transportation are required. Previously, lifting was done manually, which is time-consuming, labor-intensive, and inefficient. Furthermore, manual lifting can lead to uneven stress on the composite slabs, increasing the risk of breakage.

[0003] Patent document CN113548409A, published on October 26, 2021, discloses a truss composite slab production line lifting and transferring equipment and method. The technical solution includes: two parallel first tracks; a trolley traveling mechanism mounted on the two first tracks, capable of moving along the length of the first tracks; the trolley traveling mechanism includes two vertical plates, each with a first traveling wheel at its bottom that cooperates with the first track. Its advantages are: the lifting mold frame enables the gripping and transfer of the truss composite slab, and the trolley transports the slab. The lifting, traveling, and transferring of the above equipment can be achieved through remote control or wired control, significantly reducing manual labor intensity, achieving efficient transfer of the composite slab, facilitating centralized transfer of finished slabs, and improving the overall efficiency of the production line.

[0004] However, in the current technology, it has been found that the lifting structure that is directly hoisted to the composite slab uses hooks to connect with the truss. Obviously, the grabbing and releasing of the hooks still requires manual operation. Therefore, there is an urgent need for a hoisting device for the truss composite slab production line to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide lifting equipment for truss composite plate production lines to overcome the aforementioned shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A lifting device for a truss composite slab production line includes a gantry traveling mechanism that travels on a first track. A positioning vehicle is horizontally movably mounted on the upper end of the gantry traveling mechanism. A suspension is connected to the lower side of the positioning vehicle via a retractable lifting chain. The device also includes: multiple vertical rods mounted on the lower side of the suspension; a hook, one end of which is hinged to the lower end of the vertical rod, and the other end of which is elastically movably mounted upwards. During its rotational stroke, the hook has a lifting position that elastically unfolds to form a V-shaped lifting space with the vertical rod, and a storage position that resists elastic force and conforms to the vertical rod; and a storage assembly mounted on the vertical rod for driving the hook to switch and remain in the storage position.

[0008] Preferably, the lower end of the plumb rod is rotatably connected to a rotating shaft, one end of the barb is fixedly connected to the rotating shaft, the plumb rod is provided with a first movable groove, and a linkage is elastically and movably arranged in the first movable groove, the rotation of the rotating shaft is linked with the movement of the linkage.

[0009] Preferably, a first elastic element is provided between the top surface of the first movable groove and the linkage element.

[0010] Preferably, the storage component includes a rack at the lower end of the linkage member, the lower end of the rack being movably connected through a vertical rod, and a gear meshing with the rack on the rotating shaft. The meshing direction of the rack and the gear is such that the storage action of the barb corresponds to the upward movement of the linkage member.

[0011] Preferably, the storage component includes a second movable groove provided in the vertical rod, a pin is elastically and movably provided in the second movable groove, the linkage is provided with a socket that matches the pin, the pin is in its initial position when it is not inserted into the socket, and a reset component is provided on the upper side of the suspension for driving the pin to reset to its initial position.

[0012] Preferably, the reset assembly includes a pressure plate that can be raised and lowered on the suspension, a reset block that is synchronously raised and lowered in a second movable groove is provided on the lower side of the pressure plate, a pressing block that wedges with the reset block is provided on the pin, and a pressure strip corresponding to the pressure plate is provided on the lower side of the positioning vehicle.

[0013] Preferably, a second elastic element is provided on the lower side of the linkage component.

[0014] Preferably, the suspension is movably provided with two sets of displacement rods, each set of displacement rods consists of two rods, and at least two vertical rods are movably connected to the same displacement rod. The suspension is provided with a first adjustment component for adjusting the distance between the two sets of displacement rods, and a second adjustment component for adjusting the distance between the two displacement rods in the same set.

[0015] Preferably, the first adjustment component includes a first adjustment rod rotatably mounted on the suspension. The first adjustment rod has two symmetrical threads with opposite directions of rotation, and each thread is threaded with a sleeve. The sleeve is movably connected to two adjacent displacement rods in the two sets of displacement rods via a connecting rod.

[0016] Preferably, the second adjusting component includes a second adjusting rod disposed between two displacement rods in the same group, one end of the second adjusting rod being rotatably connected to one of the displacement rods, and the other end being threadedly connected to the other displacement rod.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The hoisting equipment used in this truss composite slab production line features a flexible rotating hook. As the hook aligns with the truss via the gantry traveling mechanism and positioning vehicle, the lifting chain extends to lower the suspension. The hook then elastically approaches the storage position, passes through the truss, and returns to its lifting position at the bottom of the truss. The hook, now in the lifting position, rises again with the suspension to hook onto the truss, thus moving the composite slab. When the composite slab needs to detach from the hook, the suspension lowers the slab and moves the hook downwards, separating the truss from the lifting space. The storage component then switches the hook back to the storage position. As the suspension rises again, the hook will no longer hook onto the truss. Clearly, this automatic connection and disconnection of the hook and truss facilitates automated demolding and transfer of the composite slab, saving labor.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0020] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the suspension structure provided in an embodiment of the present invention;

[0024] Figure 3 This is a frontal cross-sectional structural schematic diagram provided for an embodiment of the present invention;

[0025] Figure 4 Provided for embodiments of the present invention Figure 3 Enlarged structural diagram at point A;

[0026] Figure 5 Provided for embodiments of the present invention Figure 3 Enlarged structural diagram at point B;

[0027] Figure 6 This is a top view cross-sectional structural diagram of the suspension provided in an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. First track; 2. Positioning trolley; 3. Lifting chain; 4. Suspension; 5. Vertical rod; 6. Hook; 7. Rotating shaft; 8. First movable groove; 9. Linkage component; 10. First elastic component; 11. Rack; 12. Gear; 13. Second movable groove; 14. Pin; 15. Insertion hole; 16. Pressure plate; 17. Reset block; 18. Pressing block; 19. Pressure strip; 20. Second elastic component; 21. Displacement rod; 22. First adjusting rod; 23. First sleeve; 24. Connecting rod; 25. Second adjusting rod; 26. Support body; 27. Crossbeam; 28. Second track; 29. ​​Transport trolley; 30. Synchronizing rod; 31. Slider; 32. Slide groove; 33. Third elastic component; 34. Fork plate; 35. Sleeve shaft; 36. Crank handle; 37. Second sleeve; 38. Pulley block; 39. Linkage groove. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0031] Please see Figure 1-6 The present invention provides a lifting device for a truss composite slab production line, comprising a gantry traveling mechanism that travels on a first track 1, a positioning car 2 that is horizontally movably arranged at the upper end of the gantry traveling mechanism, and a suspension 4 connected to the lower side of the positioning car 2 by a retractable lifting chain 3, and further comprising: a plurality of vertical rods 5, which are arranged on the lower side of the suspension 4; a hook 6, one end of which is hinged to the lower end of the vertical rod 5, and the other end is inclined upward and elastically movably arranged, having a lifting position that elastically unfolds during the rotation stroke to form a V-shaped lifting space with the vertical rod 5, and a storage position that resists elastic force and fits against the vertical rod 5; and a storage component, which is arranged on the vertical rod 5 and is used to drive the hook 6 to switch and hold in the storage position.

[0032] Specifically, the first track 1 is configured as at least two parallel tracks, with the length direction arranged along the long line of the truss composite plate formwork. The gantry traveling mechanism includes support bodies 26 on both sides corresponding to the first track 1 and crossbeams 27 connected to the upper side of the support bodies 26. The lower end of the support body 26 is provided with rollers that move along the length direction of the first track 1. The positioning car 2 is mounted between the two parallel crossbeams 27 and moves along the length direction of the crossbeams 27, and the direction of movement is perpendicular to the length direction of the first track 1. The length direction of the truss on the composite plate is parallel to the direction of the first track 1. The lifting chains 3 are preferably four, symmetrically distributed, and keep the extension and retraction lengths consistent, so that the suspension 4 remains in a horizontal state. The inner side of the first track 1 is provided with a second track 28, and a transport car 29 is slidably arranged on the second track 28. The transport car 29 is used to receive the composite plates demolded and can be used for stacking the composite plates and then transferring the composite plates. The vertical rod 5 extends downwards, and the length extending beyond the bottom surface of the suspension 4 is not less than the height of the truss; the rotation trajectory of the hook 6 is perpendicular to the length direction of the truss, and the angle between the rotation range of the hook 6 and the vertical rod 5 does not exceed 90°; the hook 6 is hinged to the end face of the vertical rod 5 along the length direction of the truss. When the hook 6 is in the lifting position under the state of free release of elastic force, the free end extends out of the side of the vertical rod 5 parallel to the length direction of the truss to form a V-shaped lifting space. When the hook 6 is in the storage position under the state of resisting elastic force, the free end is completely retracted into the end face of the vertical rod 5 and does not extend out of the side of the vertical rod 5 parallel to the length direction of the truss; when the lifting space corresponds vertically to the truss, the vertical rod 5 is offset from the truss; the storage component is used to switch the hook 6 from the lifting position to the storage position and hold it, and when the storage position of the hook 6 is stopped, the hook 6 returns to the lifting position under the action of elastic force.In practical use, the gantry traveling mechanism and positioning vehicle 2 move under the control of the servo system, aligning the suspension 4 directly above the target composite plate and aligning the hook 6 with the truss. The servo system then controls the chain 3 to extend, lowering the suspension 4. After the hook 6 contacts the upper side of the truss, it elastically rotates to approach the storage position, smoothly passing down the truss. When the hook 6 has completely moved to the lower side of the truss, it elastically resets to return to the lifting position. At this point, the truss is positioned above the lifting space. The hook 6, now in the lifting position, rises with the suspension 4, hooking the truss to lift and demold the composite plate. Then, it continues to move with the gantry traveling mechanism... The movement of the positioning vehicle 2 can move the composite plate to the top of the transport vehicle 29. Then, the suspension 4 lowers to place the composite plate on the transport vehicle 29. The hook 6 continues to move down a certain height with the suspension 4, causing the truss to disengage from the lifting space. Then, driven by the storage component, the hook 6 is switched to the storage position. Then, the suspension 4 moves up again, and the hook 6 will no longer hook the truss. The composite plate is transferred to the transport vehicle 29. After that, the storage component stops acting on the hook 6, and the hook 6 can elastically return to the lifting position. Obviously, the automatic connection and disengagement of the hook 6 and the truss makes the automated demolding and transfer of the composite plate more convenient and saves labor.

[0033] Compared with the prior art, the lifting equipment for a truss composite slab production line proposed in this embodiment of the invention is equipped with a flexible rotating hook 6. When the hook 6 is aligned with the truss by the movement of the gantry traveling mechanism and the positioning car 2, the lifting chain 3 is extended to allow the suspension 4 to be lowered. The hook 6 can then elastically approach the storage position to pass through the truss and return to the lifting position at the lower side of the truss. Then, the hook 6 in the lifting position rises again with the suspension 4 and hooks the truss to drive the composite slab to move up and down. When the composite slab needs to be detached from the hook 6, the suspension 4 first lowers the composite slab and moves the hook 6 down to complete the detachment of the truss from the lifting space. Then, the storage component can switch the hook 6 to be held in the storage position. Then, the suspension 4 moves up again, and the hook 6 will no longer hook the truss. Obviously, the automatic connection and detachment of the hook 6 from the truss makes the automated demolding and transfer of the composite slab more convenient and saves labor.

[0034] As a preferred technical solution in this embodiment, a rotating shaft 7 is rotatably provided at the lower end of the plumb rod 5, and one end of the barb 6 is fixedly connected to the rotating shaft 7. A first movable groove 8 is provided inside the plumb rod 5, and a linkage 9 is elastically and movably provided inside the first movable groove 8. The rotation of the rotating shaft 7 is linked with the movement of the linkage 9. Specifically, the axial direction of the rotating shaft 7 matches the length direction of the truss, and the end of the rotating shaft 7 passes through the end face of the plumb rod 5 along the length direction of the truss, and is then fixedly connected to one end of the barb 6. The linkage 9 is preferably "Z" shaped, with the two ends respectively attached to the two opposite inner sidewalls of the first movable groove 8, and the middle part moving up and down within the first movable groove 8. In the linkage relationship between the rotation direction of the rotating shaft 7 and the movement direction of the linkage 9, the action of the rotating shaft 7 driving the barb 6 to move from the lifting position to the storage position corresponds to the upward action of the linkage 9, and the action of the rotating shaft 7 driving the barb 6 to move from the storage position to the lifting position corresponds to the downward action of the linkage 9.

[0035] As a preferred technical solution of this embodiment, a first elastic element 10 is provided between the top surface of the first movable groove 8 and the linkage 9. Specifically, the first elastic element 10 can preferably be a spring. The first elastic element 10 hinders the upward movement of the linkage 9. In the free release state of the first elastic element 10, it is linked to the rotating shaft 7 at the position of the linkage 9, so that the barb 6 is in the lifting position.

[0036] As a preferred embodiment, the storage component includes a rack 11 disposed at the lower end of the linkage 9, with the lower end of the rack 11 movably passing through the vertical rod 5. A gear 12 meshing with the rack 11 is disposed on the rotating shaft 7. The meshing direction of the rack 11 and the gear 12 ensures that the storage action of the barb 6 is linked to the upward movement of the linkage 9. Specifically, the meshing of the rack 11 and the gear 12 synchronizes the rotation of the rotating shaft 7 with the lifting and lowering movement of the linkage 9. The lower end of the rack 11 slidably passes through the vertical rod 5. The design allows the rack 11 to move back into the first movable groove 8 when the vertical rod 5 descends and comes into contact with the external structure. This causes the linkage 9 to rise against the elastic force of the first elastic member 10. At the same time, the rack 11 drives the rotating shaft 7 to rotate through the gear 12. The rotating shaft 7 drives the barb 6 to move closer to the storage position. When the lower end of the rack 11 is not in contact with the outside, it continues to push the linkage 9 downward under the action of the first elastic member 10, thus keeping the lower end of the rack 11 extended out of the vertical rod 5.

[0037] As a preferred embodiment, the storage component includes a second movable groove 13 within the vertical rod 5, a pin 14 elastically movably disposed within the second movable groove 13, and a socket 15 matching the pin 14 on the linkage 9. The pin 14 is in its initial position when not inserted into the socket 15. A reset component for driving the pin 14 to reset to its initial position is provided on the upper side of the suspension 4. Specifically, the pin 14 corresponds to the upper section of the linkage 9, the movement direction of the pin 14 is perpendicular to the movement direction of the linkage 9, and the end of the pin 14 away from the linkage 9 is positioned between the pin 14 and the second movable groove 13. A spring is present, which keeps pushing the pin 14 close to the linkage 9. When the insertion hole 15 corresponds to the pin 14, the pin 14 is pushed into the insertion hole 15. When the hook 6 is switched to the storage position, the rise of the linkage 9 just causes the insertion hole 15 to correspond to the pin 14. At other times, the pin 14 is retracted into the second movable slot 13, and its end is kept abutting against the linkage 9. At this time, the pin 14 is in the initial position. The reset component is used to reset the pin 14 back to the initial position, that is, to release the pin 14 from the linkage 9. It is triggered after the hook 6 is disengaged from the truss in the storage state.

[0038] As a further preferred technical solution of this embodiment, the reset assembly includes a pressure plate 16 that can be raised and lowered on the suspension 4. A reset block 17 that is raised and lowered synchronously in the second movable groove 13 is provided on the lower side of the pressure plate 16. A pressing block 18 that wedges with the reset block 17 is provided on the pin 14. A pressure strip 19 corresponding to the pressure plate 16 is provided on the lower side of the positioning vehicle 2. Specifically, when the suspension 4 rises, it can drive the pressure plate 16 and the pressure strip 19 to press against each other, thereby pushing the pressure plate 16 to descend relative to the suspension 4, that is, driving the reset block 17 to descend. The descent of the reset block 17, through its wedge-shaped pressing with the pressing block 18, can force the pin 14 away from the linkage 9, thereby realizing the reset of the pin 14.

[0039] The following details the specific transfer process of the composite plate: First, the gantry traveling mechanism and positioning vehicle 2 move under the control of the servo system, causing the suspension 4 to align directly above the target composite plate and align the hook 6 with the truss. Then, the servo system controls the chain 3 to extend so that the suspension 4 is lowered. After the hook 6 contacts the upper side of the truss, the suspension 4 continues to lower. Under the overall gravity of the suspension 4, the hook 6 is forced to press against the truss, allowing the hook 6 to move closer to the storage position, which drives the rotating shaft 7 to rotate. The rotating shaft 7 then drives the linkage 9 to rise through the gear 12 and rack 11. The linkage 9 presses upward against the first elastic element 10, compressing and... Storing elastic potential energy, when the hook 6 rotates to the end face of the vertical bar 5 but has not yet reached the storage position, the hook 6 can smoothly pass down through the truss. When the hook 6 has completely moved to the lower side of the truss, the elastic potential energy of the first elastic element 10 is released to reset the hook 6 back to the lifting position. At this time, the truss can be positioned above the lifting space. Then, the hook 6, in the lifting position, rises with the suspension 4 and hooks the truss to drive the composite plate to rise and demold. Next, with the movement of the gantry traveling mechanism and the positioning car 2, the composite plate can be driven to be positioned above the transport car 29. Then, the suspension 4 descends and places the composite plate on the transport car 29. As the suspension 4 continues to descend, the hook 6 moves a certain height, causing the truss to detach from the lifting space. The vertical rod 5, as the suspension 4 descends, moves its lower end closer to the composite plate. Then, the rack 11 abuts against the composite plate and moves upward relative to the first movable slot 8. This causes the rotating shaft 7 to rotate via the gear 12, which in turn drives the linkage 9 to move upward. When the lower end of the vertical rod 5 abuts against the composite plate, the height to which the rack 11 rises is just enough to move the hook 6 to its storage position, and to align the insertion hole 15 on the linkage 9 with the pin 14 horizontally. Thus, the pin 14, under elastic action, penetrates the first movable slot 8 to insert into the insertion hole 15, and the linkage 9 is then limited, meaning the hook 6 remains in place. After the storage position is reached, the suspension 4 moves upward again, and the hook 6 will no longer hook the truss, completing the transfer of the composite plate to the transport vehicle 29. Then, the suspension 4 rises until the pressure plate 16 and the pressure strip 19 press against each other, which pushes the pressure plate 16 to descend relative to the suspension 4, that is, drives the reset block 17 to descend. The descent of the reset block 17, through its wedge-shaped pressing cooperation with the pressing block 18, can force the pin 14 away from the linkage 9, and the pin 14 disengages from the insertion hole 15, realizing the reset of the pin 14. The linkage 9 is reset downward under the action of the first elastic member 10, and the linkage hook 6 is reset back to the lifting position to facilitate the hoisting of the next composite plate.

[0040] In another embodiment of the present invention, a second elastic element 20 is provided on the lower side of the linkage 9. Specifically, the second elastic element 20 has a certain strength to prevent the linkage 9 from moving downward. That is, the linkage 9 can further press down on the second elastic element 20 to move downward. As a result, the "V" angle formed by the linkage hook 6 on the side of the vertical rod 5 is larger, but does not exceed 90°. The setting of the second elastic element 20 can make the support of each hook 6 on the truss balanced, and avoid the truss part corresponding to a certain hook 6 from being suspended. This makes each suspension point of the truss bear force, so that the force is evenly distributed and the composite plate is prevented from cracking.

[0041] In another embodiment of the present invention, two sets of displacement rods 21 are movably arranged on the suspension 4, each set of displacement rods 21 consists of two rods, and at least two vertical rods 5 are movably connected to the same displacement rod 21. The suspension 4 is provided with a first adjustment component for adjusting the distance between the two sets of displacement rods 21, and a second adjustment component for adjusting the distance between the two displacement rods 21 in the same set. Specifically, the suspension 4 is preferably I-shaped. The two sets of displacement rods 21 are symmetrically distributed on both sides of the suspension 4, and the displacement rods 21 are horizontally movable in a direction perpendicular to their length direction. The displacement rods 21 correspond one-to-one with the truss. The vertical rods 5 on different displacement rods 21 can be arranged in a row in the direction perpendicular to the length of the displacement rods 21 and correspond to the same pressure plate 16. A synchronizing rod 30 that slides through the vertical rod 5 is fixedly provided on the upper end of the reset block 17, and a slider 31 is provided on the upper end of the synchronizing rod 30. The pressure plate 16 is provided with a groove 32 that matches the slider 31. A third elastic element 33 is connected between the top surface of the second movable groove 13 and the upper end of the reset block 17. The slider 31 and the groove 32 are provided to allow the displacement rod 21 to drive the vertical rod 5 to move relative to the pressure plate 16. The third elastic element 33 is preferably a spring. The third elastic element 33 keeps the reset block 17 pulled upward. The reset block 17 drives the pressure plate 16 to be suspended on the upper side of the suspension 4 through the synchronous rod 30. So when the suspension 4 rises and drives the pressure plate 16 to approach the pressure bar 19, the third elastic element 33 can buffer the collision between the pressure plate 16 and the pressure bar 19. In addition, when the barb 6 is in the retracted position and the pin 14 is inserted into the insertion hole 15, the pressure plate 16 descends relative to the suspension 4. Then, the reset block 17 is driven to move downward through the synchronous rod 30, thereby driving the pin 14 to reset to the initial position and releasing the limitation of the barb 6 in the retracted state. The first and second adjustment components can adjust the spacing between adjacent displacement rods 21, thereby corresponding to the setting of truss spacing on different specifications of composite plates. This adjustment is applicable to truss composite plates produced by long-line table molds, where the spacing of the previous batch of trusses is consistent, so it can be adjusted once to adapt to the situation. When adapting to another batch of truss composite plates, further adjustments are made.

[0042] As a preferred embodiment, the first adjustment component includes a first adjustment rod 22 rotatably mounted on the suspension 4. The first adjustment rod 22 has two symmetrical threads with opposite directions of rotation, each threadedly fitted with a first sleeve 23. The first sleeve 23 is movably connected to two adjacent displacement rods 21 of the two sets of displacement rods 21 via a connecting rod 24. Specifically, the first adjustment rod 22 is rotatably connected to the middle position of the suspension 4, with one end rotatably penetrating the suspension 4 and equipped with a handle. Connecting members are provided on the first sleeve 23 and on the displacement rods 21 near the first adjustment rod 22. Both ends of the connecting rod 24 are hinged to the connecting members on the first sleeve 23 and the displacement rods 21, respectively. In actual use, the rotation of the first adjustment rod 22 causes a threaded feed action between its external threads and the two first sleeves 23, thereby causing the two first sleeves 23 to move closer or further apart. This, in turn, drives the connecting rod 24 to pull or push the adjacent displacement rods 21 on both sides of the first adjustment rod 22, thus adjusting the distance between the two sets of first adjustment rods 22.

[0043] As a preferred technical solution of this embodiment, the second adjustment component includes a second adjustment rod 25 disposed between two displacement rods 21 in the same group. One end of the second adjustment rod 25 is rotatably connected to one of the displacement rods 21, and the other end is threadedly connected to the other displacement rod 21. Specifically, the outer wall of the second adjustment rod 25 is also provided with threads. The second adjustment rod 25 is perpendicular to both displacement rods 21 in the same group and is connected in the middle position of the displacement rods 21. The second adjustment rod 25 rotates relative to one of the displacement rods 21 by rotation and has a threaded feed action with the other displacement rod 21, thereby realizing the adjustment of the distance between the two displacement rods 21 in the same group.

[0044] As a preferred technical solution of the above embodiments, the displacement rod 21 is provided with a displacement segment, the vertical rod 5 is provided with a through groove and is movably sleeved on the displacement segment, the middle position of the lower side of the pressure plate 16 is provided with a fork plate 34 that fits against the opposite sides of the middle part of the suspension 4, the first adjusting rod 22 is provided with a sleeve shaft 35, one end of the sleeve shaft 35 rotates through the suspension 4 and is provided with a crank handle 36, the sleeve shaft 35 is provided with a second sleeve 37, the side of the second sleeve 37 is fixedly connected with a sliding block 38 that slides through the suspension 4, and the inner side of the fork plate 34 is provided with a linkage groove 39 that slides vertically with the block 38. Specifically, the vertical rod 5 is movably arranged on the displacement rod 21 along the length direction of the displacement rod 21; the pressure plate 16 is preferably two, and the first adjusting rod 22 is provided with sleeve shafts 35 at both ends to correspond to the two pressure plates 16 respectively; the linkage groove 39 is provided so that the fork plate 34 can move axially along the sleeve shaft 35 with the block 38, and the lifting and lowering of the fork plate 34 with the pressure plate 16 does not interfere with the block 38. In practical use, by turning the crank handle 36, the sleeve shaft 35 can be rotated. The sleeve shaft 35 and the second sleeve 37 have a threaded feed action to drive the lever block 38 to move. The lever block 38 can then drive the fork plate 34 through the linkage groove 39, and then drive the pressure plate 16 to move along the length direction of the displacement rod 21. Then, through the synchronizing rod 30, each vertical rod 5 can be moved. That is, by adjusting the distance between the two vertical rods 5 on the same displacement rod 21, the hook 6 can be matched with trusses of different lengths.

[0045] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lifting device for a truss composite slab production line, comprising a gantry traveling mechanism that travels on a first track (1), wherein a positioning vehicle (2) is horizontally movably mounted on the upper end of the gantry traveling mechanism, and a suspension (4) is connected to the lower side of the positioning vehicle (2) via a retractable lifting chain (3), characterized in that, Also includes: Multiple vertical rods (5) are installed on the underside of the suspension (4); The barb (6) has one end hinged to the lower end of the vertical rod (5) and the other end is set to be elastically upward. During the rotation stroke, it has a lifting position that elastically unfolds to form a V-shaped lifting space with the vertical rod (5) and a storage position that resists elastic force to fit the vertical rod (5). A storage component, which is mounted on a vertical bar (5), is used to drive a barb (6) to switch and remain in the storage position; The lower end of the plumb rod (5) is rotatably connected to a rotating shaft (7), one end of the barb (6) is fixedly connected to the rotating shaft (7), a first movable groove (8) is provided inside the plumb rod (5), and a linkage (9) is elastically and movablely provided inside the first movable groove (8). The rotation of the rotating shaft (7) is linked to the movement of the linkage (9). A first elastic element (10) is provided between the top surface of the first movable groove (8) and the linkage element (9); The storage component includes a rack (11) at the lower end of the linkage (9), the lower end of the rack (11) is movably connected through the vertical rod (5), and a gear (12) is provided on the rotating shaft (7) to mesh with the rack (11). The meshing direction of the rack (11) and the gear (12) makes the storage action of the barb (6) correspond to the upward movement of the linkage (9). The storage component includes a second movable groove (13) provided in the vertical rod (5), a pin (14) is elastically and movably provided in the second movable groove (13), and a socket (15) matching the pin (14) is provided on the linkage (9). The pin (14) is in its initial position when it is not inserted into the socket (15). A reset component for driving the pin (14) to reset to its initial position is provided on the upper side of the suspension (4). The reset assembly includes a pressure plate (16) that can be raised and lowered on the suspension (4), a reset block (17) that is raised and lowered synchronously in the second movable groove (13) is provided on the lower side of the pressure plate (16), a pressing block (18) that wedges with the reset block (17) is provided on the pin (14), and a pressure strip (19) corresponding to the pressure plate (16) is provided on the lower side of the positioning vehicle (2).

2. The lifting equipment for the truss composite slab production line according to claim 1, characterized in that, A second elastic element (20) is provided on the lower side of the linkage (9).

3. The lifting equipment for the truss composite slab production line according to claim 1, characterized in that, The suspension (4) is movably provided with two sets of displacement rods (21), each set of displacement rods (21) is provided with two rods, and no less than two vertical rods (5) are movably connected to the same displacement rod (21). The suspension (4) is provided with a first adjustment component for adjusting the distance between the two sets of displacement rods (21), and a second adjustment component for adjusting the distance between the two displacement rods (21) in the same set.

4. The lifting equipment for the truss composite slab production line according to claim 3, characterized in that, The first adjustment component includes a first adjustment rod (22) rotatably mounted on the suspension (4). The first adjustment rod (22) is provided with two symmetrical threads with opposite directions of rotation, and each thread is threaded with a first sleeve (23). The first sleeve (23) is movably connected to two adjacent displacement rods (21) in the two sets of displacement rods (21) through a connecting rod (24).

5. The lifting equipment for the truss composite slab production line according to claim 3, characterized in that, The second adjustment assembly includes a second adjustment rod (25) disposed between two displacement rods (21) in the same group. One end of the second adjustment rod (25) is rotatably connected to one of the displacement rods (21), and the other end is threadedly connected to the other displacement rod (21).

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