A cap beam steel bar lifting device

Abstract

The present invention belongs to the technical field of lifting equipment, and specifically relates to a cap beam reinforcement lifting device, comprising a mounting seat, a plurality of hoisting rods arranged at the bottom of the mounting seat, two support arms arranged at the bottom of the hoisting rods, an upper hoisting unit, and a lower hoisting unit, wherein a central channel is provided on the hoisting rod, and the upper and lower hoisting units each comprise two hook modules arranged relatively; the hook module comprises a hook, a sliding rod engaged with the hook teeth and sliding up and down, a first elastic member, a wedge block and a second elastic member pushing the wedge block inward, the hook module of the upper hoisting unit is arranged on the hoisting rod; the hook module of the lower hoisting unit is arranged on the support arm; the upper hoisting unit comprises an upper hook-removing member, which extends horizontally to the outside of the hoisting rod; the lower hoisting unit comprises a lower hook-removing member, the lower end of which is located between the two support arms; the two hoisting units each comprise a third elastic member pushing the hook-removing member downward, and the upper and lower hook-removing members are both provided with a downward blocking portion.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting equipment, and in particular relates to a cap beam reinforcement lifting device. Background Art

[0002] During bridge construction, the cap beam is a critical load-bearing structural component, supporting superstructures such as columns and piers. Cap beam reinforcement is a key component of the cap beam's main structure. A cage-like structure composed of longitudinal reinforcement, stirrups, and frame bars, it bears the load and transmits it to the substructure. Cap beam reinforcement is typically prefabricated on the ground or other working platforms, then hoisted to the designed cap beam location, where it is connected to the column reinforcement, formwork is installed, and concrete is poured.

[0003] Because cap beam reinforcement is typically large and heavy, its hoisting is a critical step in cap beam construction. Conventional hoisting methods involve installing two hooks on a gantry crane or overhead crane to directly hook the cap beam reinforcement. However, this method can cause shaking and poor stability during hoisting.

[0004] To solve this problem, the patent with the authorization announcement number CN117864927B discloses a steel frame integral lifting device, which includes a main frame, an adaptive adjustment mechanism, a balancing counterweight mechanism, a safety mechanism and a positioning mechanism, wherein the adaptive adjustment mechanism, the balancing counterweight mechanism, the safety mechanism and the positioning mechanism are all installed on the main frame. The balancing counterweight mechanism can balance the forces at the four corners of the main frame according to the value of the pressure sensor, and solve the problem of unstable posture caused by uneven forces on the cables at various lifting positions. The safety mechanism includes a tension detection mechanism and a safety anti-slip mechanism. The safety anti-slip mechanism includes an anti-slip hook, an anti-slip groove and an anti-slip arc ring. The anti-slip hook is used to hook the steel frame, and an anti-slip groove is provided inside. The anti-slip arc ring can slide in the anti-slip groove. After the steel frame is hooked, the anti-slip arc ring closes the anti-slip hook.

[0005] Existing equipment for hoisting rebar frames improves stability during hoisting by incorporating a counterweight mechanism. However, this technology suffers from the inconvenience of manually climbing to the top of the rebar frame to remove the hooks. This poses a safety risk and is particularly problematic when used in bridge construction, as cap beam rebar is often placed on the bridge itself, further increasing the safety risk. Summary of the Invention

[0006] The present invention provides a cap beam reinforcement lifting device to solve the technical problem in the prior art that manual unhooking is required at the top of the cap beam reinforcement, which leads to a greater safety risk.

[0007] The lifting mechanism is a lifting mechanism that is configured to lift and lower the lifting mechanism, and the lifting mechanism is configured to lift and lower the lifting mechanism, and the lifting mechanism is configured to lift and lower the lifting mechanism, wherein the lifting mechanism is a lifting mechanism that receives the lifting force of the lifting bolt and the support frame.

[0008] The upper hoisting unit includes an upper hook-picking piece that is slidably assembled in the central channel, and the upper hook-picking piece extends horizontally to the outside of the boom; the lower hoisting unit includes a lower hook-picking piece that is slidably assembled at the bottom of the boom, and the lower end of the lower hook-picking piece is located between the two arms; both hoisting units include a third elastic piece that pushes the hook-picking piece downward, and the upper and lower hook-picking pieces are both provided with a downward blocking part; when the hook is unhooked, the boom has a descending stroke and an ascending stroke, and when in the descending stroke, the upper hook-picking piece is supported on the top layer of steel bars, and the bottom of the lower hook-picking piece is supported on the second layer of steel bars, and the wedge block descends to below the blocking part; when in the ascending stroke, the blocking part prevents the wedge block and the sliding rod from moving upward, and the sliding rod moves downward relative to the boom to drive the hook to retract inward.

[0009] Beneficial effects: The upper hoisting unit hoists the top-layer steel bars, and the lower hoisting unit hoists the secondary-layer steel bars, which increases the number of hoisting points and prevents deformation of the cap beam steel bars due to concentrated force at local locations. During the lowering process of the hoisting device, the hook of the lower hoisting unit first presses on the top-layer steel bars. The hook overcomes the action of the first elastic member and swings upward, thereby passing over the top-layer steel bars. As the hoisting device continues to be lowered, the part of the upper hook extending to the outside of the boom will press on the top-layer steel bars, and the bottom surface of the lower hook will press on the secondary-layer steel bars. When the boom continues to be lowered, the hook of the upper hoisting unit will pass over the top-layer steel bars, and the hook of the lower hoisting unit will pass over the secondary-layer steel bars. During this process, the third elastic member is compressed, and after the hook passes over the steel bars, it will open outward again under the action of the first elastic member. Subsequently, the boom is lifted, and the hook of the upper hoisting unit hooks the top-layer steel bars, and the hook of the lower hoisting unit hooks the secondary-layer steel bars, and the cap beam steel bars are hoisted. When unhooking, the boom moves downward first. At this time, the upper and lower hook-removing parts remain stationary and further compress the third elastic part, and the wedge moves downward with the boom and is placed under the blocking part; the boom moves upward again, and the upper and lower hook-removing parts are pressed by the third elastic part and will not move upward with the boom. At the same time, since the upper and lower hook-removing parts push the wedge downward, the wedge and the sliding rod will not move upward with the boom. The sliding rod moves downward relative to the boom, driving the hook to swing inward and retract, thereby completing the unhooking.

[0010] In this invention, in situations where the top and second layers of rebar are staggered, the upper unhooking member extends horizontally to the outside of the hanger to press against the top rebar, while the bottom surface of the lower unhooking member presses against the second rebar, completing the unhooking process. Compared to existing methods that require manual unhooking, this eliminates the need for manual climbing on the bridge to unhook the rebar, reducing safety risks.

[0011] As a further improvement, the wedge block is connected to an unlocking rope, and the unlocking rope is connected to an unlocking block located outside the boom and the arm. After pulling the unlocking block, the elastic force of the second elastic member can be overcome to retract the wedge block into the sliding rod and disengage from the blocking part.

[0012] The unlocking block and the unlocking rope can pull the wedge block to separate the wedge block and the hook removing member, and then the wedge block and the sliding rod can be pushed upward by the first elastic member to swing the hook to an outwardly opened state.

[0013] As a further improvement, the blocking portions of the upper hook removing member and the lower hook removing member are both blocking steps arranged downward.

[0014] As a further improvement, the boom includes a fixed rod at the top and a rotating seat at the bottom, the rotating seat is rotatably mounted on the fixed rod around an axis extending up and down, and the support arm is provided on the rotating seat;

[0015] The top of the lower hook piece is assembled in the fixed rod so as to slide up and down without rotation. A spiral groove is provided on the outer side of the lower hook piece, and a sliding protrusion is provided on the inner wall of the rotating seat. The sliding protrusion is located in the spiral groove. When the lower hook piece slides up and down, the rotating seat and the support arm are driven to rotate through the spiral groove and the sliding protrusion.

[0016] The lower hook-removing member presses against the secondary rebar. As the boom continues to descend, the boom and the lower hook-removing member move relative to each other in the vertical direction. The spiral groove and sliding protrusion cooperate to drive the rotating seat, the support arm, and the hook of the lower hoisting unit to rotate, causing the hook to rotate to a certain angle. This arrangement prevents the hook from being unable to pass over the secondary rebar when the extension direction of the hook coincides with the extension direction of the secondary rebar.

[0017] As a further improvement, the sliding protrusion is assembled on the inner wall of the rotating seat through spring expansion and contraction.

[0018] When the hook rotates, if it hits the steel bars extending up and down, the hook and the rotating seat will not be able to continue rotating, but the boom will continue to move downward. At this time, the sliding protrusion will disengage from the spiral groove, preventing the boom from continuing to drive the rotating seat to rotate, causing the hook to deform the steel bars extending up and down.

[0019] As a further improvement, the lower hook removing member is further provided with a hook removing member slide groove extending up and down, the hook removing member slide groove is located below the spiral groove and is connected to the spiral groove, and the sliding protrusion enters the hook removing member slide groove.

[0020] As a further improvement, a large-diameter hole is provided on the fixing rod, and a small-diameter hole is provided on the rotating seat; and a downward anti-slip step is provided on the top of the lower hook member.

[0021] As a further improvement, the support arm and the rotating seat are fixedly installed separately.

[0022] As a further improvement, a limiting groove is provided on the side of the hook. When the hook is opened outward, the limiting groove allows the steel bar to enter to limit the steel bar and prevent it from falling off.

[0023] The limit groove ensures that the steel bars will not fall out of the limit groove during the lifting process, preventing the lifting device and the cap beam steel bars from separating.

[0024] As a further improvement, the mounting seat includes at least two sliding blocks assembled for left and right sliding movement, and each sliding block is provided with at least two suspension rods spaced apart in front and back.

[0025] The slider slides left and right to change the position of the hanger to adapt to different sizes of cap beam steel bars.

[0026] The beneficial effects are:

[0027] 1. The upper hoisting unit hoists the top-layer steel bars, and the lower hoisting unit hoists the second-layer steel bars, which increases the number of hoisting points and prevents deformation of the cap beam steel bars due to concentrated force at local locations. During the lowering process of the hoisting device, the hook of the lower hoisting unit first presses on the top-layer steel bars. The hook overcomes the action of the first elastic member and swings upward, thus passing over the top-layer steel bars. As the lowering continues, the part of the upper hook extending to the outside of the boom will press on the top-layer steel bars, and the bottom surface of the lower hook will press on the second-layer steel bars. When the boom continues to be lowered, the hook of the upper hoisting unit will pass over the top-layer steel bars, and the hook of the lower hoisting unit will pass over the second-layer steel bars. During this process, the third elastic member is compressed. After the hook passes over the steel bars, it will open outward again under the action of the first elastic member. Subsequently, the boom is lifted, and the hook of the upper hoisting unit hooks the top-layer steel bars, and the hook of the lower hoisting unit hooks the second-layer steel bars, and the cap beam steel bars are hoisted. When unhooking, the boom moves downward first. At this time, the upper and lower hook-removing parts remain stationary and further compress the third elastic part, and the wedge moves downward with the boom and is placed under the blocking part; the boom moves upward again, and the upper and lower hook-removing parts are pressed by the third elastic part and will not move upward with the boom. At the same time, since the upper and lower hook-removing parts push the wedge downward, the wedge and the sliding rod will not move upward with the boom. The sliding rod moves downward relative to the boom, driving the hook to swing inward and retract, thereby completing the unhooking.

[0028] In this invention, in situations where the top and second layers of rebar are staggered, the upper unhooking member extends horizontally to the outside of the hanger to press against the top rebar, while the bottom surface of the lower unhooking member presses against the second rebar, completing the unhooking process. Compared to existing methods that require manual unhooking, this eliminates the need for manual climbing on the bridge to unhook the rebar, reducing safety risks.

[0029] 2. The unlocking block and the unlocking rope can pull the wedge block to separate the wedge block and the hook removing member. Then the wedge block and the sliding rod can be pushed upward by the first elastic member, causing the hook to swing to an outward-opening state.

[0030] 3. The lower hook piece presses on the secondary steel bars. As the boom continues to descend, the boom and the lower hook piece move relative to each other in the vertical direction. Through the cooperation of the spiral groove and the sliding protrusion, the rotating seat, the support arm and the hook of the lower hoisting unit are driven to rotate, causing the hook to rotate to a certain angle. The purpose of this setting is to prevent the hook from being unable to pass over the secondary steel bars when the extension direction of the hook is consistent with the extension direction of the secondary steel bars.

[0031] 4. When the hook rotates, if it hits the steel bars extending up and down, the hook and the rotating seat will not be able to continue to rotate, but the boom will continue to move downward. At this time, the sliding protrusion will disengage from the spiral groove to prevent the boom from continuing to drive the rotating seat to rotate, causing the hook to deform the top of the steel bars extending up and down.

[0032] 5. The limit groove ensures that the steel bars will not fall out of the limit groove during the lifting process, preventing the lifting device and the cap beam steel bars from separating.

[0033] 6. The slider slides left and right to change the position of the hanger to adapt to different sizes of cap beam steel bars. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is the main view of the cap beam reinforcement lifting device;

[0035] Figure 2 This is a side view of the cap beam reinforcement lifting device;

[0036] Figure 3 is a perspective view of the mounting base;

[0037] Figure 4 is a top view of the mounting base;

[0038] Figure 5 for Figure 4 Cross-sectional view of section AA;

[0039] Figure 6 This is a perspective view of the upper hanging unit;

[0040] Figure 7 This is a top view of the upper hanging unit;

[0041] Figure 8 for Figure 7 Cross-sectional view of the middle BB section;

[0042] Figure 9 for Figure 8 Enlarged view of point A in the middle;

[0043] Figure 10 This is a perspective view of the lower hanging unit;

[0044] Figure 11 It is a top view of the lower hanging unit;

[0045] Figure 12 for Figure 11 Cross-sectional view of the CC section;

[0046] Figure 13 It is a structural diagram of the lower hook member and the third elastic member combined together;

[0047] Figure 14 Schematic diagram of the upper hoisting unit hooking the top layer of steel bars;

[0048] Figure 15 This is the schematic diagram of the lower lifting unit hooking the secondary layer of steel bars.

[0049] Description of reference numerals:

[0050] 11. Base; 12. Slider; 13. Connecting ring; 14. Mounting seat slot; 15. Protrusion; 16. Motor; 17. Screw;

[0051] 3. Suspension rod; 31. Fixed rod; 32. Rotating seat; 33. Sliding protrusion; 34. Spring; 35. Center channel; 36. Avoidance channel; 37. Large diameter hole; 38. Small diameter hole; 39. Upper storage groove; 310. Upper connecting hole; 311. Guide strip; 312. Outer flange; 313. Support block;

[0052] 4. Support arm; 41. Lower storage slot; 42. Lower connecting hole;

[0053] 51. Upper hoisting unit; 52. Lower hoisting unit; 53. Third elastic member; 54. Hook; 55. Sliding rod; 56. First elastic member; 57. Wedge block; 58. Second elastic member; 59. Projecting block; 510. First transmission tooth segment; 511. Second transmission tooth segment; 512. Limiting groove; 513. Upper hook-removing member; 514. Upper blocking step; 515. Lower hook-removing member; 516. Anti-drop step; 517. Lower blocking step; 518. Spiral groove; 519. Hook-removing member slideway; 520. Unlocking rope; 521. Unlocking block; 522. Guide groove;

[0054] 61. Top layer steel bars; 62. Second layer steel bars. DETAILED DESCRIPTION

[0055] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0056] The embodiment of the cap beam reinforcement lifting device provided by the present invention is as follows:

[0057] like Figures 1 to 15 As shown, a cap beam reinforcement lifting device (hereinafter referred to as the lifting device) is used to lift cap beam reinforcement. The cap beam reinforcement includes multiple layers of reinforcement and surrounding bars arranged in an upper and lower spacing. Adjacent layers of reinforcement are staggered, that is, the reinforcement of the upper layer is aligned with the spacing between adjacent reinforcements in the lower layer. The lifting device in this embodiment is used to hook onto the top layer of reinforcement 61 and the second layer of reinforcement 62. The second layer of reinforcement 62 is staggered with respect to the top layer of reinforcement 61.

[0058] The hoisting device comprises a mounting base, a boom 3, an arm 4, an upper hoisting unit 51, and a lower hoisting unit 52. The boom 3 is mounted on the bottom of the mounting base, and the arm 4 is fixed to the bottom of the boom 3.

[0059] like Figures 1 to 5 As shown, the mounting base includes a base body 11, a slider 12, a connecting ring 13, and an adjustment structure. The base body 11 is hollow and inherently heavy, allowing it to function as a counterweight. Two mounting base chutes 14 are provided at the bottom of the base body 11. These chutes 14 extend left and right, spaced apart in the front-to-back direction, and parallel to each other.

[0060] The slider 12 slides and fits into the base 11 in a horizontally slidable manner. Specifically, the bottom of the slider 12 has two protrusions 15, spaced apart in the front-to-back direction. The two protrusions 15 are respectively located in two mounting seat grooves 14, where they can slide comfortably. There are two sliders 12, spaced apart in the left-to-right direction, with a total of four protrusions 15. A threaded hole runs through the center of the slider 12 in the front-to-back direction, with the threads of the two sliders 12 having opposite directions of rotation.

[0061] The connecting ring 13 is fixedly mounted on the top of the base 11. Here, there are four connecting rings 13 arranged in a rectangular shape. The connecting ring 13 is used to connect to a lifting device such as a crane or a gantry crane to lift the cap beam reinforcement.

[0062] The adjustment mechanism is used to adjust the distance between the two sliders 12. It includes a motor 16 and a screw 17. The motor 16 is fixed to the end of the base 11. The screw 17 extends left and right, with the threads on the left and right ends of the screw 17 rotating in opposite directions. The screw 17 extends through the threaded holes of both sliders 12. When the motor 16 drives the screw 17 to rotate, it can drive the two sliders 12 closer or farther away from each other, thereby adjusting the distance between the two sliders 12.

[0063] There are four suspension rods 3, which are fixedly mounted on four protrusions 15. Figures 6 to 12 As shown, the boom 3 includes a fixed rod 31 at the top and a rotating base 32 at the bottom. The top of the fixed rod 31 is fixed to the protrusion 15, and the support arm 4 is fixed to the rotating base 32. The rotating base 32 is rotatably mounted on the bottom of the fixed rod 31 around the central axis of the boom 3. Specifically, the following method can be adopted: an outer flange 312 is provided at the top of the rotating base 32, wherein the outer flange 312 is annular. A plurality of support blocks 313 are separately mounted at the bottom of the fixed rod 31, and the plurality of support blocks 313 are evenly distributed around the axis of the boom 3. The support blocks 313 can be fixed to the fixed rod 31 using bolts (not shown in the figure). The bolts penetrate into the support blocks 313 from the side of the boom 3, thereby fixing the support blocks 313 to the boom 3. The support blocks 313 are used to prevent the outer flange 312 from falling off.

[0064] The upper hanging unit 51 is installed on the fixed rod 31 , and the lower hanging unit 52 is installed on the fixed rod 31 , the rotating base 32 and the supporting arm 4 at the same time.

[0065] There are two supporting arms 4 on each rotating seat 32 . The two supporting arms 4 are arranged at intervals in the horizontal direction, and the space between the two supporting arms 4 allows the secondary layer of steel bars 62 to enter.

[0066] A central channel 35 and an avoidance channel 36 are provided on the fixing rod 31 , wherein the central channel 35 is a circular channel extending up and down, and the avoidance channel 36 extends horizontally, connecting the central channel 35 with the outside.

[0067] A large diameter hole 37 extending vertically is defined on the bottom surface of the fixing rod 31 , and a small diameter hole 38 extending vertically is defined on the rotating seat 32 . The large diameter hole 37 has a larger diameter than the small diameter hole 38 .

[0068] The outer side of the fixing rod 31 is provided with two upper receiving grooves 39, which are arranged horizontally opposite to each other. The inner top of the upper receiving groove 39 is provided with an upper communicating hole 310, and the upper receiving groove 39 is connected to the central channel 35 through the upper communicating hole 310.

[0069] A sliding protrusion 33 is fixed on the inner side of the rotating seat 32. The sliding protrusion 33 is connected to the rotating seat 32 through a spring 34. The spring 34 here is a compression spring. The spring 34 drives the sliding protrusion 33 to move inward, wherein the inner end of the sliding protrusion 33 is spherical.

[0070] It should be noted that, in this embodiment, the inner end refers to the end close to the central axis of the boom 3 , and the outer end refers to the end away from the central axis of the boom 3 .

[0071] A lower receiving groove 41 is respectively formed on the outer sides of the two supporting arms 4 , and a lower communicating hole 42 is formed on the inner top of the lower receiving groove 41 . The lower receiving groove 41 and the space between the two supporting arms 4 are communicated through the lower communicating hole 42 .

[0072] like Figures 6 to 13 As shown, the upper hanging unit 51 and the lower hanging unit 52 each include two hook modules, a hook removing member, and a third elastic member 53 .

[0073] The hook module includes a hook 54, a sliding rod 55, a first elastic member 56, a wedge 57, a second elastic member 58, an unlocking rope 520, and an unlocking block 521. The inner end of the hook 54 is rotatable, while the sliding rod 55 slides vertically. A retaining groove 512 is defined on the side of the hook 54. This groove allows the steel bar to enter and retain it in place, preventing it from detaching from the hook 54.

[0074] Specifically, the hook 54 of the upper hanging unit 51 is rotatably mounted about a horizontal axis at the bottom of the upper receiving groove 39, while the hook 54 of the lower hanging unit 52 is rotatably mounted about a horizontal axis at the bottom of the lower receiving groove 41. The sliding rod 55 of the upper hanging unit 51 is slidably mounted inside the upper receiving groove 39, while the sliding rod 55 of the lower hanging unit 52 is slidably mounted inside the lower receiving groove 41.

[0075] An inwardly facing protruding block 59 is provided on the top of the sliding rod 55 . The protruding block 59 of the upper hanging unit 51 is located in the upper communicating hole 310 , and the protruding block 59 of the lower hanging unit 52 is located in the lower communicating hole 42 .

[0076] The first elastic member 56 is a compression spring, and its upper end is fixed to the protruding block 59. In the upper suspension unit 51, the lower end of the first elastic member 56 is fixed to the bottom of the upper connecting hole 310. In the lower suspension unit 52, the lower end of the first elastic member 56 is fixed to the bottom of the lower connecting hole 42.

[0077] The wedge block 57 is slidably assembled on the inner side of the protruding block 59 in the horizontal direction. The second elastic member 58 connects the wedge block 57 and the protruding block 59. The second elastic member 58 is a compression spring that pushes the wedge block 57 inward. In the upper hanging unit 51, when the wedge block 57 is only subjected to gravity and the elastic force of the second elastic member 58, the inner end of the wedge block 57 is located in the central channel 35. In the lower hanging unit 52, when the wedge block 57 is only subjected to gravity and the elastic force of the second elastic member 58, the inner end of the wedge block 57 is located between the two support arms 4. The bottom surface of the inner end of the wedge block 57 is an inclined surface and the top surface is a flat surface. The inclined surface extends from bottom to top and is inclined toward the central axis of the boom 3.

[0078] Unlocking rope 520 is connected to the outside of wedge 57. Unlocking block 521 is located outside boom 3 and arm 4. Unlocking block 521 is connected to unlocking rope 520. Pulling unlocking block 521 retracts wedge 57 into protruding block 59. When wedge 57 is not under pressure from the unhooking member, second elastic member 58 drives wedge 57 and unlocking rope 520, causing unlocking block 521 to rest on the outside of boom 3 and arm 4.

[0079] A first transmission tooth segment 510 is defined on the outer bottom of the sliding rod 55, and a second transmission tooth segment 511 is defined on the inner side of the hook 54. The first transmission tooth segment 510 extends vertically, while the second transmission tooth segment 511 is arc-shaped and extends around the axis of the hook 54. The first and second transmission tooth segments 510 and 511 mesh with each other. When the sliding rod 55 moves downward relative to the boom 3, it drives the hook 54 to swing inward and retract into the receiving slot. At this point, the hook 54 is in the retracted position. When the sliding rod 55 moves upward relative to the boom 3, it drives the hook 54 to swing outward and open. At this point, the hook 54 can hook onto the bottom of the rebar. At this point, the hook 54 is in the hooked position.

[0080] The upper hook-removing member of the upper hoisting unit 51 is an upper hook-removing member 513, which is slidably assembled in the central channel 35. The upper hook-removing member 513 passes horizontally through the avoidance channel 36 and extends out of the boom 3, with a portion located outside the boom 3. The upper hook-removing member 513 is provided with an upper blocking step 514 facing downward.

[0081] The hook-removing member of the lower hoisting unit 52 is a lower hook-removing member 515. The top of the lower hook-removing member 515 is a stepped shaft structure, thereby having a downward anti-slip step 516, and the bottom has a downward blocking step 517. The outside of the lower hook-removing member 515 is provided with a spiral groove 518 and a hook-removing member slide 519. The hook-removing member slide 519 extends up and down and is connected to the spiral groove 518. The hook-removing member slide 519 is located below the spiral groove 518. The upper end of the lower hook-removing member 515 is slidably assembled in the large-diameter hole 37 of the fixed rod 31 and the small-diameter hole 38 of the rotating seat 32. The anti-slip step 516 can be supported on the rotating seat 32 to prevent the lower hook-removing member 515 from slipping out. The spiral groove 518 and the hook-removing member slide 519 are both for the sliding protrusion 33 to enter.

[0082] A guide bar 311 is fixed to the inner wall of the large-diameter hole 37, and a guide groove 522 extending up and down is provided on the top of the lower hook 515. The guide bar 311 and the guide groove 522 cooperate to prevent the lower hook 515 from rotating relative to the fixed rod 31. The lower hook 515 can only move up and down relative to the fixed rod 31 but cannot rotate.

[0083] The third elastic member 53 is a compression spring. The third elastic member 53 of the upper suspension unit 51 is located in the central channel 35, with its upper end connected to the suspension rod 3 and its lower end connected to the lower hook 515. The third elastic member 53 of the lower suspension unit 52 is located in the large-diameter hole 37, with its upper end connected to the suspension rod 3 and its lower end connected to the lower hook 515.

[0084] In actual use, the length of the hook 54 of the lower hanging unit 52 may be greater than the length of the hook 54 of the upper hanging unit 51 .

[0085] Usage: In the initial state, the hook 54 is pushed outward by the first elastic member 56, and the motor 16 is activated to adjust the position of the two sliders 12. The hoisting device is lowered, and the lower hoisting unit 52 passes through the gap between two adjacent bars in the top layer of steel bars 61. The bottom surface of the lower hook 515 rests on the secondary steel bars 62. As the lower hoisting unit 52 is lowered, the hook 54 is pushed upward by the top layer of steel bars 61, and after passing the top layer of steel bars 61, it swings outward again.

[0086] As the hoisting device continues to be lowered, the upper hook-removing member 513 is supported on the top steel bar 61 and compresses the third elastic member 53 of the upper hoisting unit 51. The hook 54 of the upper hoisting unit 51 is pushed by the top steel bar 61 and swings upward, thereby passing over the top steel bar 61. After passing over the top steel bar 61, the hook 54 swings outward again and opens. The lower hook-removing member 515 of the lower hoisting unit 52 compresses the third elastic member 53 of the lower hoisting unit 52. The hook 54 of the lower hoisting unit 52 is pushed by the secondary steel bar 62 and swings upward, thereby passing over the secondary steel bar 62. The lower hook-removing member 515 is supported on the secondary steel bar 62 and cannot move downward. The suspension rod 3 and the lower hook-removing member 515 move relative to each other. Driven by the spiral groove 518 and the sliding protrusion 33, the rotating seat 32 drives the hook 54 of the lower hoisting unit 52 to rotate. After all the hooks 54 have passed over the steel bars, the hoisting device is lifted up, and the hooks 54 of the upper hoisting unit 51 are hooked on the top steel bars 61, and the hooks 54 of the lower hoisting unit 52 are hooked on the secondary steel bars 62. When hoisting the cap beam steel bars, the relative positions of the top steel bars 61, the secondary steel bars 62, the hooks 54, the suspender rod 3, the upper hook removal piece 513, and the lower hook removal piece 515 are as shown in FIG. Figure 14 and Figure 15 shown.

[0087] After the cap beam reinforcement is hoisted into place, it is necessary to unhook the device and separate it from the cap beam reinforcement. When unhooking, the hoisting device continues to be lowered. At this time, the boom 3 is in the descending stroke, and the upper unhooking member 513 is supported on the top reinforcement 61 and does not move. The sliding rod 55 of the upper hoisting unit 51 moves downward, and the wedge block 57 presses against the upper unhooking member 513 when it moves downward. It retracts due to the action of the inclined surface, and the wedge block 57 passes over the upper unhooking member 513 and moves below the upper blocking step 514.

[0088] The lower hook 515 is supported on the secondary steel bar 62 and remains stationary, the sliding rod 55 of the lower hoisting unit 52 moves downward, and the wedge block 57 moves downward to below the lower blocking step 517.

[0089] Then the lifting device is lifted up, and the boom 3 is in the ascending stroke. The boom 3 and the support arm 4 both move upward, but the sliding rod 55 and the wedge block 57 are pushed by the third elastic member 53 and the hook removing member and cannot move upward. The sliding rod 55 moves downward relative to the boom 3, driving the hook 54 to swing inward and retract into the storage slot.

[0090] After separating the lifting device from the cap beam reinforcement, manually pull the unlocking block 521 to move the wedge block 57 outward, and the hook removing member moves downward under the action of the third elastic member 53. The sliding rod 55 is pushed upward by the first elastic member 56, and the hook 54 is reset to the outward-open state.

[0091] In this embodiment, the mounting base includes two sliders 12, the positions of which are adjustable, and each slider 12 is mounted with two suspension rods 3. In other embodiments, the number of suspension rods 3 on each slider 12 can be increased as needed. In other embodiments, the number of sliders 12 can be increased, and each slider 12 can be equipped with a separate drive mechanism, so that the position of the slider 12 can be adjusted independently.

[0092] In this embodiment, the support arm 4 and the rotating seat 32 are separately processed and then assembled together. Specifically, mounting holes are provided on both sides of the rotating seat 32, and the support arm 4 is inserted into the mounting holes. In other embodiments, the support arm 4 and the rotating seat 32 can be an integrated structure.

[0093] In this embodiment, a large-diameter hole 37 is formed in the fixed rod 31, a small-diameter hole 38 is formed in the rotating base 32, and a top portion of the lower hook 515 has an anti-slip step 516 that supports the rotating base 32 and prevents the lower hook 515 from slipping out. In other embodiments, the holes in the fixed rod 31 and the rotating base 32 can be configured with equal diameters, with the third elastic member 53 being used to prevent the lower hook 515 from slipping out.

[0094] In this embodiment, the sliding protrusion 33 is retractably assembled on the rotating seat 32 via a spring 34. When the hook 54 in the lower hoisting unit 52 rotates and contacts the cap beam reinforcement, if the hanger 3 continues to descend, the sliding protrusion 33 disengages from the spiral groove 518, preventing the hook 54 from continuing to rotate. In other embodiments, the spiral groove 518 and the sliding protrusion 33 can be eliminated, and the rotating seat 32 and the fixed rod 31 can be integrated. When lowering, it is necessary to ensure that the hook 54 of the lower hoisting unit 52 cannot be parallel to the secondary reinforcement 62, and can only have a certain angle with the secondary reinforcement 62 so that the hook 54 can hook the secondary reinforcement 62.

[0095] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A cap beam reinforcement lifting device, comprising a mounting seat, characterized in that: The cam is provided with a plurality of suspenders at the bottom of the mounting base, two supporting arms at the bottom of the suspenders, an upper suspending unit for hooking the top layer of steel bars, and a lower suspending unit for hooking the second layer of steel bars, wherein the suspender is provided with a central channel, and the upper and lower suspending units each include two hook modules arranged relatively; the hook module includes a rotatably arranged hook, a sliding rod engaged with the hook teeth and sliding up and down, a first elastic member pushing the sliding rod upward, and further including a wedge block horizontally slidably assembled on the sliding rod and a second elastic member pushing the wedge block inward, the wedge block having a bottom inclined surface and a top flat surface, the hook module of the upper suspending unit is provided on the suspender, and the wedge block is pushed to the central channel; the hook module of the lower suspending unit is provided on the supporting arm, and the wedge block is pushed between the two supporting arms; The upper hoisting unit includes an upper hook-picking piece that is slidably assembled in the central channel, and the upper hook-picking piece extends horizontally to the outside of the boom; the lower hoisting unit includes a lower hook-picking piece that is slidably assembled at the bottom of the boom, and the lower end of the lower hook-picking piece is located between the two arms; both hoisting units include a third elastic piece that pushes the hook-picking piece downward, and the upper and lower hook-picking pieces are both provided with a downward blocking part; when the hook is unhooked, the boom has a descending stroke and an ascending stroke, and when in the descending stroke, the upper hook-picking piece is supported on the top layer of steel bars, and the bottom of the lower hook-picking piece is supported on the second layer of steel bars, and the wedge block descends to below the blocking part; when in the ascending stroke, the blocking part prevents the wedge block and the sliding rod from moving upward, and the sliding rod moves downward relative to the boom to drive the hook to retract inward.

2. The cap beam reinforcement lifting device according to claim 1, characterized in that: The wedge block is connected to an unlocking rope, and the unlocking rope is connected to an unlocking block located outside the boom and the arm. When the unlocking block is pulled, the elastic force of the second elastic member can be overcome to retract the wedge block into the sliding rod and disengage from the blocking portion.

3. The cap beam reinforcement lifting device according to claim 1, characterized in that: The blocking parts of the upper hook removing member and the lower hook removing member are both blocking steps arranged downward.

4. The cap beam reinforcement lifting device according to claim 1, characterized in that: The boom includes a fixed rod at the top and a rotating seat at the bottom. The rotating seat is rotatably mounted on the fixed rod around an axis extending up and down. The support arm is arranged on the rotating seat. The top of the lower hook piece is assembled in the fixed rod so as to slide up and down without rotation. A spiral groove is provided on the outer side of the lower hook piece, and a sliding protrusion is provided on the inner wall of the rotating seat. The sliding protrusion is located in the spiral groove. When the lower hook piece slides up and down, the rotating seat and the support arm are driven to rotate through the spiral groove and the sliding protrusion.

5. The cap beam reinforcement lifting device according to claim 4, characterized in that: The sliding protrusion is assembled on the inner wall of the rotating seat through spring expansion and contraction.

6. The cap beam reinforcement lifting device according to claim 5, characterized in that: The lower hook removing member is also provided with a hook removing member chute extending up and down. The hook removing member chute is located below the spiral groove and is communicated with the spiral groove. The sliding protrusion enters the hook removing member chute.

7. The cap beam reinforcement lifting device according to claim 4, characterized in that: The fixing rod is provided with a large-diameter hole, and the rotating seat is provided with a small-diameter hole; and the top of the lower hook-removing member is provided with a downward anti-slip step.

8. The cap beam reinforcement lifting device according to claim 4, characterized in that: The support arm and the rotating seat are separately fixedly installed together.

9. The cap beam reinforcement lifting device according to any one of claims 1 to 8, characterized in that: The side of the hook is provided with a limiting groove, and when the hook is opened outward, the limiting groove allows the steel bar to enter to limit the steel bar and prevent it from falling off.

10. The cap beam reinforcement lifting device according to any one of claims 1 to 8, characterized in that: The mounting seat comprises at least two sliding blocks which are slidably assembled left and right, and each sliding block is provided with at least two suspension rods which are spaced apart from each other in the front and back directions.

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