A small lifting hook installed on a profile

Abstract

The present invention discloses a small lifting hook installed on a profile, comprising a pair of slotted hanging plates arranged vertically, an open slot body arranged on the slotted hanging plates for being covered on the profile and adapted to the cross-sectional shape of the profile, the open slot body consisting of a vertical open slot and a horizontal bottom slot connected to each other, a first bridge plate and a second bridge plate connected between the open slot bodies of a pair of slotted hanging plates, and the first bridge plate and the second bridge plate connected to the left and right positions in the open slot bodies, respectively, a first tightening screw for tightening the profile is arranged on the first bridge plate, a second tightening screw for tightening the profile is arranged on the second bridge plate, a vertical rib is arranged at the lower position of each slotted hanging plate, a shackle hanging plate is vertically connected downwardly between the vertical ribs of a pair of slotted hanging plates, and a shackle connecting hole for hanging the shackle is arranged at the lower position of the shackle hanging plate. The present invention solves the difficulty of hoisting during the repair of ship equipment.

Description

Technical Field

[0001] The invention relates to the technical field of ship equipment repair, and in particular to a small lifting hook installed on a profile. Background Art

[0002] During routine repairs on a ship, the shafting intermediate bearing cover needs to be opened for inspection and replacement of internal seals. It is necessary to weld a lifting lug plate at an appropriate position on the hull at the top of the intermediate bearing, and then lift the bearing cover by shackles, wires and hoists. Since there are dozens of cables lined up at the welding position of the lifting lug just above the bearing cover, the lifting lug cannot be welded. If the lifting lug is welded at an angle to both sides, the bearing cover cannot be lifted correctly. In addition, the heat and sparks of welding during hot work can easily damage the cables. In addition, the wheel should have its own particularity, so open flame construction is not possible. Therefore, a special lifting small hook was designed and manufactured according to the on-site time conditions. Summary of the invention

[0003] The present invention proposes a small lifting hook installed on a profile, aiming to solve the difficulty of lifting during ship equipment repair. The specific technical solution is as follows:

[0004] A small lifting hook installed on a profile, comprising a pair of slotted hanging plates arranged in parallel and spaced apart and arranged vertically when in use, an open slot body arranged on each of the slotted hanging plates for being sleeved on the profile and adapted to the cross-sectional shape of the profile, the open slot body consisting of a vertical open slot and a horizontal bottom slot connected to each other, a first bridge plate and a second bridge plate are respectively connected between the open slot bodies of a pair of the slotted hanging plates, and the first bridge plate and the second bridge plate are respectively connected to the left and right positions in the open slot bodies, a first tightening screw for tightening the profile is arranged on the first bridge plate, a second tightening screw for tightening the profile is arranged on the second bridge plate, a vertical rib is arranged at the lower position of each of the slotted hanging plates, a shackle hanging plate is vertically connected downwardly between the vertical ribs of the pair of the slotted hanging plates, and a shackle connecting hole for hanging the shackle is arranged at the lower position of the shackle hanging plate.

[0005] A further improvement is that grooves are respectively provided on the opening groove body of the slotted hanging plate at corresponding connection positions of the first bridge plate, the second bridge plate and the opening groove body, and the first bridge plate and the second bridge plate are respectively positioned in the grooves.

[0006] Preferably, one side of the first bridge plate and the second bridge plate facing the inside of the open slot body is flush with the side faces of the slot body at corresponding positions on the open slot body.

[0007] Preferably, a third bridge plate is connected between the open slot bodies of a pair of the slotted hanging plates, and the third bridge plate is connected to the bottom position of the horizontal bottom slot of the open slot body.

[0008] Preferably, a groove for positioning the third bridge plate is provided on the horizontal bottom groove of the open groove body, and a surface of the third bridge plate facing the inside of the open groove body is flush with the bottom of the horizontal bottom groove.

[0009] In the present invention, the shackle hanging plate is fixedly connected to the vertical reinforcement via connecting bolts.

[0010] The small lifting hook of the present invention has different structures according to different profiles.

[0011] The structure of the small lifting hook applicable to L-shaped steel is as follows:

[0012] Wherein, the profile is L-shaped steel, and the open trough body is an L-shaped open trough body.

[0013] Wherein, the first bridge plate is vertically connected to the left side of the opening of the L-shaped opening slot body, and the second bridge plate is horizontally connected to the upper right side of the horizontal bottom slot of the L-shaped opening slot body.

[0014] Among them, the opening portion of the L-shaped opening groove body is provided with a trimming edge, and the trimming edge includes a first trimming edge arranged at the upper corner position of the right side edge of the opening portion of the L-shaped opening groove body, and a second trimming edge arranged at the lower corner position of the right side edge of the opening portion of the L-shaped opening groove body.

[0015] The trimming and cutting of the L-shaped opening trough body is achieved by the following method:

[0016] (1) Design of slotted cladding: Design the slotted cladding before trimming and cutting in CAD drawing software;

[0017] (2) Establishment of L-shaped steel section model: Design the contour model of the L-shaped steel section in CAD drawing software;

[0018] (3) Establishing constraint conditions for the contour model: In the CAD drawing software, select the outer right-angle point of the contour model of the L-shaped steel section as the first constraint corner point, select the endpoint on the lower outer side of the contour model of the L-shaped steel section away from the first constraint corner point as the second constraint corner point, constrain the first constraint corner point to the left side of the opening of the L-shaped open trough body, and constrain the second constraint corner point to the bottom of the horizontal bottom trough of the L-shaped open trough body;

[0019] (4) Copying and shifting the contour model: in the CAD drawing software, copy the contour models of multiple L-shaped steel sections, and move the copied contour models of the multiple L-shaped steel sections to different positions under the constraint conditions of step (3), and form an envelope contour of the L-shaped steel section with dynamically shifted contour models according to the different positions of the contour models of the multiple L-shaped steel sections;

[0020] (5) Formation of trimming and trimming: Check whether the envelope contour of the L-shaped steel section interferes with the opening of the L-shaped opening groove. If there is interference, trimming and trimming are performed at the interference position of the opening of the L-shaped opening groove, so that the distance between the edge of the opening after trimming and trimming and the envelope contour of the L-shaped steel section is greater than the set distance.

[0021] Wherein, the trimming and cutting edge comprises a first trimming and cutting edge and a second trimming and cutting edge.

[0022] The structure of the small lifting hook applicable to T-shaped steel is as follows:

[0023] Wherein, the profile is T-shaped steel, and the open trough body is an inverted T-shaped open trough body.

[0024] Wherein, the first bridge plate is horizontally connected to the upper left side of the horizontal bottom groove of the inverted T-shaped opening groove body, and the second bridge plate is horizontally connected to the upper right side of the horizontal bottom groove of the inverted T-shaped opening groove body.

[0025] Wherein, the opening portion of the inverted T-shaped opening slot is provided with a trimming edge, and the trimming edge includes an arc trimming edge pre-set at the upper corner position of the right side edge of the opening portion of the inverted T-shaped opening slot, a third trimming edge set at the upper corner position of the left side edge of the opening portion of the inverted T-shaped opening slot, and a fourth trimming edge set at the lower corner position of the left side edge of the opening portion of the inverted T-shaped opening slot; the horizontal bottom groove of the inverted T-shaped opening slot is widened in the horizontal direction so that the T-shaped steel has space to move left and right in the horizontal bottom groove; limiting ribs are respectively arranged on the left and right sides of the horizontal bottom groove of the inverted T-shaped opening slot on the slotted hanging plate, and limiting screws for horizontally tightening the T-shaped steel are arranged on the limiting ribs.

[0026] The trimming and cutting of the T-shaped opening groove body is obtained by the following method:

[0027] (1) Design of slotted cladding: Design the slotted cladding before trimming and cutting in CAD drawing software;

[0028] (2) Establishment of T-steel cross-section model: Design the contour model of the T-steel cross-section in CAD drawing software;

[0029] (3) Establishing constraint conditions for the contour model: In the CAD drawing software, select the left endpoint on the lower outer side of the contour model of the T-shaped steel section as the first constraint endpoint, and select the right endpoint on the lower outer side of the contour model of the T-shaped steel section as the second constraint endpoint; constrain the first constraint endpoint to the bottom of the horizontal bottom groove of the inverted T-shaped opening groove body, and constrain the second constraint endpoint to the combined connection line of the right edge straight line of the opening portion of the inverted T-shaped opening groove body and the arc trimming edge;

[0030] (4) Copying and shifting the contour model: in the CAD drawing software, copy the contour models of multiple T-shaped steel sections, and move the copied contour models of the multiple T-shaped steel sections to different positions under the constraint conditions of step (3), and form the envelope contour of the T-shaped steel section with dynamically shifted contour models according to the different positions of the contour models of the multiple T-shaped steel sections;

[0031] (5) Formation of trimming edges: Check whether the profile of the T-shaped steel cross section envelope line interferes with the upper corner position of the left edge of the opening of the inverted T-shaped opening slot body. If there is interference, implement the third trimming edge at the upper corner position of the left edge of the opening of the inverted T-shaped opening slot body, and make the distance between the edge of the third trimming edge and the profile of the T-shaped steel cross section envelope line greater than a set distance; Check whether the profile of the T-shaped steel cross section envelope line interferes with the lower corner position of the left edge of the opening of the inverted T-shaped opening slot body. If there is interference, implement the fourth trimming edge at the lower corner position of the left edge of the opening of the inverted T-shaped opening slot body, and make the distance between the edge of the fourth trimming edge and the profile of the T-shaped steel cross section envelope line greater than a set distance.

[0032] The beneficial effects of the present invention are:

[0033] First, the small lifting hook installed on the profile of the present invention has a reasonable structure, uses less materials and has good strength, can be reliably fixed on L-shaped steel or T-shaped steel, and can lift more than 200kg.

[0034] Secondly, the small lifting hook installed on the profile of the present invention has a compact and light structure, is simple to operate, is easy to use, and does not need to be welded to the steel section.

[0035] Thirdly, the small lifting hook installed on the profile of the present invention adopts the profile method of the profile steel section envelope line to achieve the trimming and trimming of the opening slot body. After trimming and trimming, the hook does not need to be inserted into the profile steel from the axial direction, but can be directly inserted and bent at any position of the profile steel by the notch of the hook, and then fixed with a tightening screw. This solves the problem that some profile steels cannot be inserted due to the welding of reinforcing ribs at the local node positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a small lifting hook installed on an L-shaped steel profile of the present invention;

[0037] Figure 2 yes Figure 1 Right view of;

[0038] Figure 3 yes Figure 1 A schematic diagram of the structure of the slotted hanging plate in FIG.

[0039] Figure 4 It is a structural schematic diagram of a small lifting hook installed on a T-shaped steel profile of the present invention;

[0040] Figure 5 yes Figure 4 Left view of;

[0041] Figure 6 yes Figure 5 A schematic diagram of the structure of the slotted hanging plate in FIG.

[0042] Figure 7 Yes and Figure 8 It is a schematic diagram of the structure of providing a groove for positioning a bridge plate on a slotted hanging plate;

[0043] Fig. 9 is Figure 8 A schematic diagram of a structure further improved on the basis of;

[0044] Fig.10 yes Figure 7 A schematic diagram of the structure of the slotted hanging plate in FIG.

[0045] Fig.11 It is a schematic diagram of the profile model of the L-shaped steel section;

[0046] Fig.12 is the profile model of the L-shaped steel section Fig.10 Schematic diagram of the L-shaped steel section envelope profile formed in the slotted cladding;

[0047] Fig.13 yes Fig. 9 A schematic diagram of the structure of the slotted hanging plate in FIG.

[0048] Fig.14 It is a schematic diagram of the profile model of the T-shaped steel section;

[0049] Fig.15 is the profile model of the T-shaped steel section Fig.13 Schematic diagram of the T-steel section envelope profile formed in the slotted cladding.

[0050] In the figure: 1. slotted hanging plate, 2. open slot body, 3. vertical open slot, 4. horizontal bottom slot, 5. first bridge plate, 6. second bridge plate, 7. first jacking screw, 8. second jacking screw, 9. vertical reinforcement, 10. shackle hanging plate, 11. shackle connection hole, 12. connection bolt, 13. L-shaped steel, 14. L-shaped open slot body, 15. first trimming edge, 16. second trimming edge, 17. contour model of L-shaped steel section, 18. first constraint corner point, 19. second constraint corner point, 20. Envelope contour of L-shaped steel section, 21. T-shaped steel, 22. T-shaped opening slot, 23. Third trimming edge, 24. Fourth trimming edge, 25. Space for left and right movement; 26. Limit ribs, 27. Limit screws, 28. Contour model of T-shaped steel section, 29. First constraint endpoint, 30. Arc trimming edge, 31. Second constraint endpoint, 32. Combined connection line, 33. Envelope contour of T-shaped steel section, 34. Edge straight line, 35. Groove, 36. Third bridge plate. DETAILED DESCRIPTION

[0051] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0052] Embodiment 1:

[0053] like Figures 1 to 15 The figure shows an embodiment of a small lifting hook installed on a profile of the present invention, comprising a pair of slotted hanging plates 1 arranged in parallel and spaced apart and arranged upright when in use, an open slot body 2 arranged on each of the slotted hanging plates 1 for being sleeved on the profile and adapted to the cross-sectional shape of the profile, the open slot body 2 consisting of a vertical open slot 3 and a horizontal bottom slot 4 interconnected with each other, a first bridge plate 5 and a second bridge plate 6 are respectively connected between the open slot bodies 2 of a pair of the slotted hanging plates 1, and the first bridge plate 5 and the second bridge plate 6 are respectively connected to the left and right positions in the open slot bodies 2, a first tightening screw 7 for tightening the profile is provided on the first bridge plate 5, and a second tightening screw 8 for tightening the profile is provided on the second bridge plate 6, a vertical rib 9 is provided at the lower position of each of the slotted hanging plates 1, a shackle hanging plate 10 is vertically connected downwardly between the vertical ribs 9 of the pair of slotted hanging plates 1, and a shackle connecting hole 11 for hanging the shackle is provided at the lower position of the shackle hanging plate 10.

[0054] A further improvement is that grooves 35 are respectively provided on the opening slot body 2 of the slotted hanging plate 1 at corresponding connection positions between the first bridge plate 5 , the second bridge plate 6 and the opening slot body 2 , and the first bridge plate 5 and the second bridge plate 6 are respectively positioned in the grooves 35 .

[0055] Preferably, a surface of the first bridge plate 5 and the second bridge plate 6 facing the inside of the open slot body 2 is flush with the slot body side surfaces at corresponding positions on the open slot body 2 .

[0056] Preferably, a third bridge plate 36 is connected between the open slot bodies 2 of a pair of the slotted hanging plates 1 , and the third bridge plate 36 is connected to the bottom position of the horizontal bottom slot 4 of the open slot body 2 .

[0057] Preferably, a groove for positioning the third bridge plate 36 is provided on the horizontal bottom groove 4 of the open groove body 2 , and a surface of the third bridge plate 36 facing the inside of the open groove body 2 is flush with the bottom of the horizontal bottom groove 4 .

[0058] In this embodiment, the shackle hanging plate 10 is fixedly connected to the vertical rib 9 via connecting bolts 12 .

[0059] The small lifting hook in this embodiment has different structures according to different profiles.

[0060] The structure of the small lifting hook applicable to L-shaped steel 13 is as follows:

[0061] The profile is an L-shaped steel 13 , and the open trough body 2 is an L-shaped open trough body 14 .

[0062] The first bridge plate 5 is vertically connected to the left side of the opening of the L-shaped opening slot body 14 , and the second bridge plate 6 is horizontally connected to the upper right side of the horizontal bottom slot 4 of the L-shaped opening slot body 14 .

[0063] Among them, the opening portion of the L-shaped opening groove body 14 is provided with a trimming edge, and the trimming edge includes a first trimming edge 15 arranged at the upper corner position of the right side edge of the opening portion of the L-shaped opening groove body 14, and a second trimming edge 16 arranged at the lower corner position of the right side edge of the opening portion of the L-shaped opening groove body 14.

[0064] The trimming and cutting of the L-shaped opening slot 14 is achieved by the following method:

[0065] (1) Design of slotted cladding: Design the slotted cladding 1 before trimming and cutting in CAD drawing software;

[0066] (2) Establishment of L-shaped steel cross-section model: Design the contour model of the L-shaped steel surface in CAD drawing software17;

[0067] (3) Establishing the constraint conditions of the contour model: In the CAD drawing software, select the outer right-angle point of the contour model 17 of the L-shaped steel section as the first constraint corner point 18, select the end point on the lower outer side of the contour model 17 of the L-shaped steel section away from the first constraint corner point 18 as the second constraint corner point 19, constrain the first constraint corner point 18 to the left side of the opening of the L-shaped opening slot body 14, and constrain the second constraint corner point 19 to the bottom of the horizontal bottom slot 4 of the L-shaped opening slot body 14;

[0068] (4) Copying and shifting the contour model: In the CAD drawing software, copy the contour models 17 of the multiple L-shaped steel sections, and move the copied contour models 17 of the multiple L-shaped steel sections to different positions under the constraint conditions of step (3), and form an L-shaped steel section envelope contour 20 with dynamically shifted contour models according to the different positions of the contour models 17 of the multiple L-shaped steel sections;

[0069] (5) Formation of trimming and trimming: Check whether the envelope contour 20 of the L-shaped steel section interferes with the opening of the L-shaped opening slot 14. If there is interference, trimming and trimming are performed at the interference position of the opening of the L-shaped opening slot 14, so that the distance between the edge of the opening after trimming and trimming and the envelope contour 20 of the L-shaped steel section is greater than the set distance.

[0070] The trimming edges include a first trimming edge 15 and a second trimming edge 16 .

[0071] The structure of the small lifting hook applicable to T-shaped steel is as follows:

[0072] The profile is a T-shaped steel 21, and the open slot body 2 is an inverted T-shaped open slot body 22.

[0073] The first bridge plate 5 is horizontally connected to the upper left side of the horizontal bottom groove 4 of the inverted T-shaped opening groove body 22 , and the second bridge plate 6 is horizontally connected to the upper right side of the horizontal bottom groove 4 of the inverted T-shaped opening groove body 22 .

[0074] Among them, the opening portion of the inverted T-shaped opening slot 22 is provided with a trimming edge, and the trimming edge includes an arc trimming edge 30 pre-set at the upper corner position of the right side edge of the opening portion of the inverted T-shaped opening slot 22, a third trimming edge 23 set at the upper corner position of the left side edge of the opening portion of the inverted T-shaped opening slot 22, and a fourth trimming edge 24 set at the lower corner position of the left side edge of the opening portion of the inverted T-shaped opening slot 22; the horizontal bottom groove 4 of the inverted T-shaped opening slot 22 is widened in the horizontal direction so that the T-shaped steel 21 has space to move left and right in the horizontal bottom groove 4; on the slotted hanging plate 1, limit ribs 26 are respectively set at the left and right sides of the horizontal bottom groove 4 of the inverted T-shaped opening slot 22, and the limit ribs 26 are provided with limit screws 27 for horizontally tightening the T-shaped steel 21.

[0075] The trimming and cutting of the T-shaped opening groove 22 is achieved by the following method:

[0076] (1) Design of slotted cladding: Design the slotted cladding 1 before trimming and cutting in CAD drawing software;

[0077] (2) Establishment of T-steel cross-section model: Design the contour model of the T-steel cross-section in CAD drawing software28;

[0078] (3) Establishing the constraint conditions of the contour model: In the CAD drawing software, select the left endpoint on the lower outer side of the contour model 28 of the T-shaped steel section as the first constraint endpoint 29, and select the right endpoint on the lower outer side of the contour model 28 of the T-shaped steel section as the second constraint endpoint 31; constrain the first constraint endpoint 29 to the bottom of the horizontal bottom groove 4 of the inverted T-shaped opening groove body 22, and constrain the second constraint endpoint 31 to the combined connection line 32 of the right edge straight line 34 of the opening portion of the inverted T-shaped opening groove body 22 and the arc trimming edge 30;

[0079] (4) Copying and shifting the contour model: In the CAD drawing software, copy the contour models 28 of the multiple T-shaped steel sections, and move the copied contour models 28 of the multiple T-shaped steel sections to different positions under the constraint conditions of step (3), and form a T-shaped steel section envelope contour 33 with dynamically shifted contour models according to the different positions of the contour models 28 of the multiple T-shaped steel sections;

[0080] (5) Formation of trimming edges: Check whether the T-steel cross-section envelope contour 33 interferes with the upper corner position of the left edge of the opening of the inverted T-shaped opening slot 22. If there is interference, implement the third trimming edge 23 at the upper corner position of the left edge of the opening of the inverted T-shaped opening slot 22, and make the distance between the edge of the third trimming edge 23 and the T-steel cross-section envelope contour 33 greater than a set distance; Check whether the T-steel cross-section envelope contour 33 interferes with the lower corner position of the left edge of the opening of the inverted T-shaped opening slot 22. If there is interference, implement the fourth trimming edge 24 at the lower corner position of the left edge of the opening of the inverted T-shaped opening slot 22, and make the distance between the edge of the fourth trimming edge 24 and the T-steel cross-section envelope contour 33 greater than a set distance.

[0081] Embodiment 2:

[0082] How to use the small lifting hook:

[0083] First, the on-site environment is investigated and the lifting plan is confirmed. It is decided to use the reinforced steel (L-shaped steel and T-shaped steel) on the reverse side of the upper deck of the bearing as the force generating part, and a pair of hooks are made, which are lifted in an "eight" shape to make way for the cable rack in the middle and above. Then the size and structure of the L-shaped steel and T-shaped steel reinforcements are accurately measured. The hook of this embodiment is drawn and designed by a computer at a ratio of 1:1, and the hook plate is cut by numerical control after the design. After the hook is marked, drilled and tapped, it is assembled, welded and polished, and the size and relative position of each plate are strictly controlled during the process. When in use, the hook is fixed to the L-shaped steel or T-shaped steel at the upper position of the bearing cover with a tightening screw, and the tightening screw is against the surface of the profile. The shackle hole at the lower part of the small hook is installed with a shackle and a hanging hoist. The small hooks are used in pairs, in an "eight" lifting state, and the upper cover of the bearing is disassembled and installed for repair work.

[0084] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A small lifting hook installed on a profile, characterized in that: The invention comprises a pair of slotted hanging plates arranged in parallel and spaced apart and arranged vertically when in use, an open slot body arranged on each of the slotted hanging plates for being covered on the profile and adapted to the cross-sectional shape of the profile, the open slot body consisting of a vertical open slot and a horizontal bottom slot connected to each other, a first bridge plate and a second bridge plate are respectively connected between the open slot bodies of the pair of slotted hanging plates, and the first bridge plate and the second bridge plate are respectively connected to the left and right positions in the open slot bodies, a first tightening screw for tightening the profile is arranged on the first bridge plate, a second tightening screw for tightening the profile is arranged on the second bridge plate, and each A vertical rib is provided at the lower position of the slotted hanging plate, a pair of the vertical ribs of the slotted hanging plates are vertically connected downwardly with a shackle hanging plate, and a shackle connecting hole for hanging the shackle is provided at the lower position of the shackle hanging plate; the profile is L-shaped steel, and the open slot body is an L-shaped open slot body; the opening of the L-shaped open slot body is provided with a trimming edge, and the trimming edge includes a first trimming edge provided at the upper corner position of the right side edge of the opening of the L-shaped open slot body, and a second trimming edge provided at the lower corner position of the right side edge of the opening of the L-shaped open slot body; the trimming edge on the L-shaped open slot body is obtained by the following method: (1) Design of slotted cladding: Design the slotted cladding before trimming and cutting in CAD drawing software; (2) Establishment of L-shaped steel section model: Design the contour model of the L-shaped steel section in CAD drawing software; (3) Establishing constraint conditions for the contour model: In the CAD drawing software, select the outer right-angle point of the contour model of the L-shaped steel section as the first constraint corner point, select the endpoint on the lower outer side of the contour model of the L-shaped steel section away from the first constraint corner point as the second constraint corner point, constrain the first constraint corner point to the left side of the opening of the L-shaped open trough body, and constrain the second constraint corner point to the bottom of the horizontal bottom trough of the L-shaped open trough body; (4) Copying and shifting the contour model: In the CAD drawing software, copy the contour models of multiple L-shaped steel sections, and move the copied contour models of the multiple L-shaped steel sections to different positions under the constraint conditions of step (3), and form an envelope contour of the L-shaped steel section with dynamically shifted contour models according to the different positions of the contour models of the multiple L-shaped steel sections; (5) Formation of trimming and trimming: Check whether the envelope contour of the L-shaped steel section interferes with the opening of the L-shaped opening groove. If there is interference, trimming and trimming are performed at the interference position of the opening of the L-shaped opening groove, so that the distance between the edge of the opening after trimming and trimming and the envelope contour of the L-shaped steel section is greater than the set distance.

2. A small lifting hook installed on a profile according to claim 1, characterized in that: The opening slot body of the slotted hanging plate is provided with grooves at corresponding connection positions between the first bridge plate, the second bridge plate and the opening slot body, and the first bridge plate and the second bridge plate are positioned in the grooves, respectively.

3. A small lifting hook installed on a profile according to claim 2, characterized in that: The first bridge plate is vertically connected to the left side of the opening of the L-shaped opening slot body, and the second bridge plate is horizontally connected to the upper right side of the horizontal bottom slot of the L-shaped opening slot body.

4. A small lifting hook installed on a profile, characterized in that: The invention comprises a pair of slotted hanging plates which are arranged in parallel and spaced apart and are arranged vertically when in use, and an open slot body which is arranged on each of the slotted hanging plates and is used for being mounted on a profile and is adapted to the cross-sectional shape of the profile, the open slot body being composed of a vertical open slot and a horizontal bottom slot which are interconnected, a first bridge plate and a second bridge plate are respectively connected between the open slot bodies of a pair of the slotted hanging plates, and the first bridge plate and the second bridge plate are respectively connected to the left and right positions in the open slot bodies, a first tightening screw for tightening the profile is arranged on the first bridge plate, and a second tightening screw for tightening the profile is arranged on the second bridge plate, a vertical rib is arranged at the lower position of each of the slotted hanging plates, a shackle hanging plate is vertically connected downwardly between the vertical ribs of the pair of the slotted hanging plates, and a shackle connecting hole for hanging the shackle is arranged at the lower position of the shackle hanging plate; the profile is a T-shaped steel, and the open slot body is an inverted arrangement The invention relates to a T-shaped opening groove body; the opening portion of the inverted T-shaped opening groove body is provided with a trimming edge, and the trimming edge includes an arc trimming edge pre-set at the upper corner position of the right side edge of the opening portion of the inverted T-shaped opening groove body, a third trimming edge set at the upper corner position of the left edge of the opening portion of the inverted T-shaped opening groove body, and a fourth trimming edge set at the lower corner position of the left edge of the opening portion of the inverted T-shaped opening groove body; the horizontal bottom groove of the inverted T-shaped opening groove body is widened in the horizontal direction so that the T-shaped steel has space to move left and right in the horizontal bottom groove; limiting ribs are respectively arranged on the slotted hanging plate at the left and right sides of the horizontal bottom groove of the inverted T-shaped opening groove body, and the limiting ribs are provided with limiting screws that horizontally tighten the T-shaped steel; the trimming edge on the T-shaped opening groove body is obtained by the following method: (1) Design of slotted cladding: Design the slotted cladding before trimming and cutting in CAD drawing software; (2) Establishment of T-steel cross-section model: Design the contour model of the T-steel cross-section in CAD drawing software; (3) Establishing the constraint conditions of the contour model: In the CAD drawing software, select the left endpoint on the lower outer side of the contour model of the T-shaped steel section as the first constraint endpoint, and select the right endpoint on the lower outer side of the contour model of the T-shaped steel section as the second constraint endpoint; constrain the first constraint endpoint to the bottom of the horizontal bottom groove of the inverted T-shaped opening groove body, and constrain the second constraint endpoint to the combined connection line of the right edge straight line of the opening part of the inverted T-shaped opening groove body and the arc trimming edge; (4) Copying and shifting the contour model: In the CAD drawing software, copy the contour models of multiple T-shaped steel sections, and move the copied contour models of the multiple T-shaped steel sections to different positions under the constraint conditions of step (3), and form the envelope contour of the T-shaped steel section with dynamically shifted contour models according to the different positions of the contour models of the multiple T-shaped steel sections; (5) Formation of trimming edges: Check whether the profile of the T-shaped steel cross section envelope line interferes with the upper corner position of the left edge of the opening of the inverted T-shaped opening trough. If there is interference, implement the third trimming edge at the upper corner position of the left edge of the opening of the inverted T-shaped opening trough, and make the distance between the edge of the third trimming edge and the profile of the T-shaped steel cross section envelope line greater than the set distance; Check whether the profile of the T-shaped steel cross section envelope line interferes with the lower corner position of the left edge of the opening of the inverted T-shaped opening trough. If there is interference, implement the fourth trimming edge at the lower corner position of the left edge of the opening of the inverted T-shaped opening trough, and make the distance between the edge of the fourth trimming edge and the profile of the T-shaped steel cross section envelope line greater than the set distance.

5. A small lifting hook installed on a profile according to claim 4, characterized in that: The first bridge plate is horizontally connected to the upper left side of the horizontal bottom groove of the inverted T-shaped opening groove body, and the second bridge plate is horizontally connected to the upper right side of the horizontal bottom groove of the inverted T-shaped opening groove body.

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