CN220283299U - Bridge construction anti-drop flexible suspender tightening structure - Google Patents

Abstract

The utility model relates to the technical field of braces, in particular to an anti-falling flexible brace tightening structure for bridge construction, which comprises a tightening belt, a spring, a fixing seat, a sliding part and a control part, wherein the sliding part is arranged on the tightening belt; the fixing seat comprises a placing plate and fixing blocks, the fixing blocks are respectively arranged at two ends of the placing plate, two tightening belts are symmetrically arranged, one end of each tightening belt is fixedly connected with the middle part of the lower side of the fixing seat, and the other end of each tightening belt is respectively spliced with the two fixing blocks; the spring, the sliding part and the control part are all provided with two parts, and the two sliding parts, the control part and the spring respectively control the two tightening belts to be contracted or relaxed; the side part of the sliding part is spliced with the fixed block, extends into the fixed block and is meshed with or separated from the tightening belt through a tooth-shaped structure, and the lower part of the sliding part is in sliding connection with the placing plate; one end of the control piece is rotationally connected with the placing plate, the other end of the control piece is abutted with the sliding piece, one end of the spring is fixedly connected with the placing plate, and the other end of the spring is fixedly connected with the sliding piece; the tightening structure can tighten the flexible suspender between the bridge component and the lifting hook, so that potential safety hazards are reduced.

Description

Bridge construction anti-drop flexible suspender tightening structure

Technical Field

The utility model relates to the technical field of hanging strips, in particular to an anti-falling flexible hanging strip tightening structure for bridge construction.

Background

The flexible suspender has the characteristics of light use and large carrying capacity, is widely applied to the hoisting construction of bridges at present, along with the increase of hoisting operation projects of hoisting equipment, people are more concerned about the safety problem in the hoisting process, the part of the middle part of the existing flexible suspender, which is positioned between a bridge component and a lifting hook of the hoisting equipment, cannot be tightly tied, the hoisting process of the flexible suspender is unstable, the bridge component has hidden dangers falling off from the suspender, and because the bridge component is large in size and heavy in weight, once falling off occurs, the safety of constructors is seriously impaired.

Therefore, a structure is tightly tied on the flexible suspender for preventing the falling-off in bridge construction, and the problem that the joint of the flexible suspender and a bridge component is easy to scatter during hoisting can be avoided.

Disclosure of Invention

Aiming at the problems, the utility model provides the anti-falling flexible sling tightening structure for bridge construction, which can tighten the joint of the flexible sling and the lifting hook in flexible sling lifting, so as to reduce potential safety hazards.

The utility model solves the technical problems by adopting the technical scheme that:

a bridge construction anti-falling flexible sling tightening structure comprises a tightening belt, a spring, a fixing seat, a sliding part and a control part; the fixing seat comprises a placing plate and fixing blocks, the two ends of the placing plate are respectively provided with the fixing blocks, two tightening belts are symmetrically arranged, one ends of the two tightening belts are respectively fixedly connected with the middle part of the lower side of the fixing seat, and the other ends of the two tightening belts are respectively spliced with the two fixing blocks; the springs, the sliding parts and the control parts are all provided with two pieces, the two pieces of springs, the sliding parts and the control parts are symmetrically arranged, and the two pieces of springs, the sliding parts and the control parts respectively control the two tightening bands to be contracted or relaxed; the side parts of the two sliding parts are respectively spliced with the two fixed blocks, extend into the fixed blocks and are meshed with or separated from the tightening belt through a tooth-shaped structure, and the lower parts of the sliding parts are in sliding connection with the placing plate; one end of each control piece is rotationally connected with the placing plate, and the other end of each control piece is abutted with the sliding piece; one end of each spring is fixedly connected with the placing plate, and the other end of each spring is fixedly connected with one side, far away from the fixed block, of the sliding piece.

Preferably, the upper surface of the placing plate is provided with two grooves, the grooves extend from the middle of the placing plate to the fixing block, the fixing plate is fixedly arranged on the grooves, the fixing block is penetrated with a sliding groove, one side close to the placing plate is provided with a moving groove, and the sliding groove, the moving groove and the grooves are communicated.

Preferably, one end of the tightening belt is a tightening end, the other end of the tightening belt is a contact end, a plurality of first rack structures are fixedly arranged on the tightening end, and the first rack structures are uniformly distributed and arranged along the length square interval of the tightening belt; the tightening end is spliced with the fixed block through the sliding groove.

Preferably, the sliding piece comprises a sliding block, one end of the sliding block is provided with a tightening side, the upper part of the other end of the sliding block is provided with an arc-shaped boss, the tightening side comprises a plurality of second rack structures, the second rack structures are uniformly distributed along the length direction of the sliding block at intervals, and the second rack structures on the tightening side can extend into the fixing block to be meshed with the first rack structures on the tightening end.

Preferably, the control piece comprises a rotating plate, a buckling block, a rotating shaft and a clip spring, wherein the buckling block is arranged on the upper portion of the rotating plate, the rotating plate is rotationally connected with the placing plate through the rotating shaft, the clip spring is spirally wound on the rotating shaft, one end of the clip spring is fixedly connected with the lower portion of the groove, and the other end of the clip spring is fixedly connected with the rotating plate.

Preferably, the fixed plate is arranged between the rotating plate and the sliding block, one side of the spring is fixedly connected with the sliding block, and the other end of the spring is fixedly connected with the fixed plate.

Preferably, the bridge construction anti-drop flexible suspender tightening structure is arranged on the suspender belt body, the two ends of the suspender belt body are respectively provided with a first suspension buckle and a second suspension buckle, the middle part of the suspender belt body is provided with a protective sleeve, and a hook is fixedly arranged between the protective sleeve and the first suspension buckle.

Preferably, the two tightening bands are respectively connected with two ends of the fixing base to form two annular holes, one annular hole is sleeved between the hook and the protective sleeve, and the other annular hole is sleeved between the protective sleeve and the second hanging buckle.

Preferably, the tightening belt is provided with a plurality of rack structures III in an evenly distributed manner at intervals, the upper parts of the rack structures III are provided with inclined planes, the sliding block is provided with a plurality of rack structures IV in an evenly distributed manner at intervals, the lower parts of the rack structures IV are provided with matched inclined planes, and the rack structures III are identical to the rack structures IV in shape and opposite in direction.

Compared with the prior art, the utility model has the beneficial effects that:

according to the anti-falling flexible sling tightening structure for bridge construction, the structure with the tightening effect is sleeved on the flexible sling between the bridge component and the lifting hook, the fixing seat and the tightening belt can be tightened and loosened under the action of the sliding part, the control part and the spring, the adjustment work of constructors is facilitated, the tightening or loosening of the belt body at one end of the flexible sling can be achieved, the assembly and the unloading of the bridge component are completed, the instability of the flexible sling during lifting is reduced, the hidden danger of falling of the bridge component is avoided to the greatest extent, and the tightening structure is flexible and convenient to operate, and the tightening function can be rapidly achieved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.

FIG. 1 is a schematic view of a flexible harness according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a structure of an embodiment of the present utility model;

FIG. 3 is a partial cross-sectional view of an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view in elevation of an embodiment of the present utility model;

FIG. 5 is a schematic cross-sectional view in top view of an embodiment of the present utility model;

FIG. 6 is an enlarged view of a portion of area A of FIG. 5;

FIG. 7 is a schematic cross-sectional view of a two-tooth structure according to an embodiment of the present utility model.

Reference numerals illustrate:

1. tightening the belt; 11. a tightening end; 12. a contact end; 2. a spring; 3. a fixing seat; 31. placing a plate; 311. a groove; 312. a first lug; 313. a fixing plate; 32. a fixed block; 321. a chute; 322. a moving groove; 33. a fixed head; 4. a slider; 41. a tightening side; 42. a slide block; 43. arc-shaped bosses; 5. a control member; 51. a rotating plate; 52. a buckling block; 53. a second lug; 54. a rotating shaft; 55. a clip spring; 6. connecting a lifting hook; 7. a sling belt body; 71. a first hanging buckle; 72. a second hanging buckle; 8. a hook; 9. a protective sleeve; 10. a lifting hook; 101. a first hook; 102. and a second hook.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation or be constructed and operated in a specific orientation. The term "connected" merely means a connection between devices and is not of special significance.

1-6, a bridge construction anti-falling flexible sling tightening structure comprises a tightening belt 1, a spring 2, a fixed seat 3, a sliding piece 4 and a control piece 5; the fixing seat 3 comprises a placing plate 31 and fixing blocks 32, the fixing blocks 32 are respectively arranged at two ends of the placing plate 31, two tightening belts 1 are symmetrically arranged, one ends of the two tightening belts 1 are fixedly connected with the middle part of the lower side of the fixing seat 3 respectively, and the other ends of the two tightening belts are spliced with the two fixing blocks 32 respectively; the springs 2, the sliding parts 4 and the control parts 5 are respectively provided with two pieces, the two springs 2, the sliding parts 4 and the control parts 5 are symmetrically arranged, and the two springs 2, the sliding parts 4 and the control parts 5 respectively control the two tightening bands 1 to be contracted or loosened; the side parts of the two sliding parts 4 are respectively spliced with the two fixed blocks 32, extend into the fixed blocks 32 and are meshed with or separated from the tightening belt 1 through a tooth-shaped structure, and the lower parts of the sliding parts 4 are in sliding connection with the placing plate 31; one end of each control piece 5 is rotatably connected with the placing plate 31, and the other end of each control piece is abutted with the sliding piece 4; one end of each spring 2 is fixedly connected with the placing plate 31, and the other end is fixedly connected with one side of the sliding piece 4 away from the fixed block 32.

The placing plate 31 may be a square plate, the upper surface of the placing plate 31 is provided with two grooves 311, the grooves 311 extend from the middle of the placing plate 31 to the fixed block 32, one end of the groove 311 far away from the fixed block 32 is provided with two first lugs 312, the two first lugs 312 are respectively arranged at two sides of the groove 311 and used for connecting the control member 5, the groove 311 is fixedly provided with a fixed plate 313, the fixed plate 313 is arranged between the sliding member 4 and the control member 5, the spring 2 is arranged between the sliding member 4 and the fixed plate 313, and one end of the spring 2 is fixedly connected with the fixed plate 313; the fixed block 32 is provided with a sliding groove 321 in a penetrating manner from bottom to top, a moving groove 322 is arranged towards one side of the middle part of the placing plate 31, and the sliding groove 321 and the moving groove 322 are communicated with the groove 311; the fixing base 3 further comprises two fixing heads 33, and the two fixing heads 33 are fixedly arranged in the middle of the lower side of the placing plate 31 and fixedly connected with the placing plate 31.

The two tightening belts 1 are respectively connected with the two ends of the fixed seat 3 to form two annular holes, one end of each tightening belt 1 is a tightening end 11, and the other end is a contact end 12; the tightening end 11 is inserted into the fixed block 32 at one end of the fixed seat 3, the tightening end 11 is fixedly provided with a plurality of first rack structures, the first rack structures are uniformly distributed along the length square interval of the tightening end 11, one end, far away from the tightening end 11, of the contact end 12 is connected with one of the fixed heads 33 through bolts and locked by nuts, the contact end 12 is used for accommodating a flexible sling, when the tightening structure is used in the hoisting process of the flexible sling, the tightening belt 1 surrounds the flexible sling, the flexible sling is placed in the annular hole, and the contact end 12 is one end, in contact with the flexible sling, of the tightening belt 1.

The sliding piece 4 comprises a sliding block 42, wherein one end of the sliding block 42 is provided with a tightening side 41, the upper part of the other end is provided with an arc-shaped boss 43, the lower part of the other end is connected with the spring 2, the tightening side 41 comprises a plurality of rack structures II, the rack structures II are uniformly distributed and arranged along the length direction of the sliding block 42, and the rack structures II on the tightening side 41 can extend into the fixing block 32 to be meshed with the rack structures I on the tightening end 11; the arc-shaped boss 43 is arranged at the upper part of the sliding block 42 and is used for abutting against or separating from the control piece 5; when the tightening structure is used in the process of hoisting the flexible hanging strip, the control piece 5 is abutted against the arc-shaped boss 43, the pressure in the control piece 5 is transmitted to the sliding block 42, the sliding block 42 is pushed to slide along the groove 311 towards the direction close to the fixed block 32, the sliding block 42 moves to enable the spring 2 to continuously extend until the second rack structure on the tightening side 41 is meshed with the first rack structure on the tightening end 11, and the flexible hanging strip wrapped by the contact end 12 is locked to enable the flexible hanging strip to be tightened; when the tightening structure is used and the position of the tightening structure needs to be adjusted, the control piece 5 is pulled to separate the control piece 5 from the arc-shaped boss 43, the sliding block 42 moves along the groove 311 in the direction away from the fixed block 32 under the action of the elastic force of the spring 2, so that the second rack structure on the tightening side 41 is separated from the first rack structure on the tightening end 11, and a constructor can adjust the tightening belt 1 to loosen the flexible hanging strip.

The control member 5 comprises a rotating plate 51, a buckling block 52, a second lug 53, a rotating shaft 54 and a clip spring 55; the upper part of the rotating plate 51 is provided with a buckling block 52, the lower part of the buckling block 52 is provided with an arc-shaped groove, the arc-shaped groove is attached to the surface shape of the arc-shaped boss 43 and can be abutted against or separated from the arc-shaped boss 43, so that a constructor can conveniently adjust the tightening structure to enable the flexible hanging strip to tighten or loosen, the lower part of the rotating plate 51 is provided with a second lug 53, the second lug 53 is provided with two pieces, the two pieces of second lugs 53 are respectively fixedly arranged on two sides of the lower part of the rotating plate 51, the rotating plate 51 is rotationally connected with the placing plate 31 through a rotating shaft 54, two ends of the rotating shaft 54 respectively penetrate through the two pieces of second lugs 53 and are connected with the first lug 312, the first lug 312 and the second lug 53 are concentrically arranged, a clip spring 55 is spirally wound on the rotating shaft 54, two ends of the clip spring 55 are outwards extended, one end of the clip spring 55 is fixedly connected with the lower part of the groove 311, and the other end of the clip spring is fixedly connected with the rotating plate 51; when the tightening structure is used in the process of hoisting the flexible hanging strip, under the action of the elasticity of the clip spring 55, the buckling block 52 is abutted with the arc-shaped boss 43, and the sliding block 42 moves to enable the spring 2 to continuously extend until the rack structure II on the tightening side 41 is meshed with the rack structure I on the tightening end 11, so that the tightening structure locks the flexible hanging strip; after the flexible sling is lifted, the buckling block 52 is separated from the arc-shaped boss 43, the spring 2 is reset, the sliding block 42 is reversely moved, and the rack structure II on the tightening side 41 is separated from the rack structure I on the tightening end 11.

The bridge construction anti-falling flexible hanging strip tightening structure is arranged on a hanging strip body 7, a first hanging buckle 71 and a second hanging buckle 72 are respectively arranged at two ends of the hanging strip body 7, a plurality of protective sleeves 9 are arranged in the middle of the hanging strip body 7, the protective sleeves 9 are in sliding connection with the hanging strip body 7, a plurality of hooks 8 are fixedly arranged between the protective sleeves 9 and the first hanging buckle 71, and the hooks 8 are uniformly distributed and arrayed at intervals along the hanging strip body 7; the strap body 7 is provided with a strap Kong Diaogou, and the first hanging buckle 71 and the second hanging buckle 72 are connected with the lower end of the strap Kong Diaogou; the lower end of the strap Kong Diaogou is provided with a first hook 101 and a second hook 102, the head parts of the first hook 101 and the second hook 102 are respectively and fixedly connected with the upper part of the lifting hook 10 with the hole, the tail parts of the first hook 101 and the second hook 102 respectively extend towards two sides in opposite directions, and the first hook 101 and the second hook 102 are respectively in a semi-closed round shape and are used for hanging the first hanging buckle 71 and the second hanging buckle 72; the hinge piece is arranged between the head part and the tail part of the first hook 101, the hinge piece can rotate downwards to be separated from the inner side of the tail part of the first hook 101 and is used for being connected with or separated from the first hanging buckle 71 in a hanging mode, the fixing piece is arranged between the head part and the tail part of the second hook 102 and comprises a poking piece, the poking piece is connected with the head part of the second hook 102 in a rotating mode and is fixedly connected with the tail part of the second hook 102 through a bolt and is used for being connected with the second hanging buckle 72 in a hanging mode, and the second hanging buckle 72 is limited to be separated from the tail part of the second hook 102.

The upper end of the lifting hook 10 with the hole is fixedly connected with the lower end of the connecting lifting hook 6 through a connector, and the upper end of the connecting lifting hook 6 is used for connecting with a lifting device lifting hook; when the flexible suspender is used, constructors hang the connecting lifting hook 6 on the lifting device lifting hook, after the flexible suspender passes through the bottom of the bridge component, hang the first lifting buckle 71 on the first hook 101 at the lower end of the strap Kong Diaogou, the constructors can use one of the binding bands 1 of the bridge construction anti-falling flexible suspender binding structure to be arranged between the hook 8 and the protective sleeve 9, one of the specific annular holes is sleeved between the hook 8 and the protective sleeve 9, the other binding band 1 is arranged between the protective sleeve 9 and the second lifting buckle 72, the other specific annular hole is sleeved between the protective sleeve 9 and the second lifting buckle 72, and the bridge component is prevented from falling off, and the bridge component is lifted through the lifting device, so that the use of the flexible suspender is completed.

The use flow and the working principle of the device are as follows:

when using the flexible hanging strip, constructors transport the articles to be hoisted to a designated position and then hang the connecting lifting hook 6 on the lifting hook of the hoisting equipment hanger; the fixing piece enables the second hanging buckle 72 to be incapable of being separated from the second hook 102, the hinge piece is adjusted, the first hanging buckle 71 is separated from the first hook 101, after the flexible hanging belt passes through the proper position of the bottom of a bridge component, the protective sleeves 9 are slid, the sharp edges of the bridge component are respectively wrapped by the protective sleeves 9, the hinge piece is adjusted, the first hanging buckle 71 is hung on the first hook 101, if the bridge component is small in size, the hanging length of the hanging belt body 7 between the object and the hanging hook of the hanging device is long, the hanging hook 8 at the proper position can be adjusted according to the size of the bridge component and hung on the first hook 101, and the hanging of the bridge component is realized through the hanging device.

Before hoisting the hoisting equipment, a constructor can place one end of the bridge construction anti-falling flexible sling tightening structure between the hook 8 and the protective sleeve 9, the other end of the bridge construction anti-falling flexible sling tightening structure is arranged between the protective sleeve 9 and the second hoisting buckle 72, the constructor pulls the control piece 5 to separate the control piece from the sliding piece 4, the sliding piece 4 is separated from the tightening strap 1 under the action of the spring 2, the tightening strap 1 is adjusted to separate the tightening end 11 from the fixed block 32, the sling strap body 7 is placed in the annular hole, the tightening strap 1 is adjusted to enable the tightening end 11 to be spliced with the fixed block 32, the contact end 12 can wrap the sling strap body 7, the control piece 5 is released, the elastic force of the clip spring 55 is transmitted to the sliding piece 4 to enable the sliding piece 4 to be abutted with the sliding piece 4 and push the sliding piece to slide towards the direction of the fixed block 32, the spring 2 is pulled to be continuously stretched until the sliding piece 4 and the tightening end 11 are meshed through the tooth-shaped structure, and the tightening strap 1 is locked, and the flexible sling is in a tightening state; after the flexible suspender is lifted, constructors can adjust the control piece 5 corresponding to the tightening belt 1 between the hook 8 and the protective sleeve 9 to separate the control piece from the sliding piece 4, the sliding piece 4 moves reversely under the action of the elasticity of the spring 2 to separate the sliding piece 4 from the tightening end 11, and the tightening belt 1 is adjusted to separate the tightening structure from the suspender belt body 7, so that the object is conveniently separated from the flexible suspender.

Referring to fig. 7, in the first embodiment, the first rack structure for realizing the locking or releasing function and the second shape limitation of the rack structure are used, after the constructor is separated from the sliding member 4 by pulling the control member 5, the tightening belt 1 can be adjusted to realize the locking or releasing function of the tightening structure, so that the shape of the tooth structure can be changed, the tightening structure can directly pull the tightening belt 1 to realize the locking function of the tightening structure without pulling the control member 5 when the control member 5 is abutted to the sliding member 4, and thus the constructor can quickly lock the flexible sling.

One end of the tightening belt 1 is uniformly provided with a plurality of rack structures III at intervals along the length direction, the upper part of the rack structures III is provided with an inclined plane, one side of the sliding block 42 is uniformly provided with a plurality of rack structures IV at intervals along the length direction, the lower part of the rack structures IV is provided with a matched inclined plane, the rack structures III and the rack structures IV are identical in shape and opposite in direction, in the tightening structure used for hoisting a flexible sling, the control piece 5 is abutted with the sliding piece 4, and a constructor can directly pull the tightening belt 1 to move in the sliding groove 321 to shrink the annular hole until the annular hole wraps the sling belt body 7, so that the function of quick locking of the tightening structure is realized; stopping pulling and tightening belt 1, rack structure three can cooperate rack structure four, and restriction tightening belt 1 moves towards the direction that makes annular hole enlarge, and this tightening structure prevents that flexible suspender is unstable at hoist and mount in-process, leads to the condition emergence that bridge parts drops, and can reduce this tightening structure use step, improves constructor efficiency of construction.

According to the anti-falling flexible hanging strip tightening structure for bridge construction, the structure with the tightening effect is sleeved on the flexible hanging strip between the bridge component and the hanging hook, the fixing seat and the tightening strip can be tightened and loosened under the action of the sliding piece, the control piece and the spring, the adjustment work of constructors is facilitated, the tightening or loosening of the strip body at one end of the flexible hanging strip can be achieved, the assembly and the unloading of the bridge component are completed, the instability of the flexible hanging strip during hanging is reduced, the hidden danger of falling of the bridge component is avoided to the greatest extent, and the device is flexible and convenient to operate, and is convenient for constructors to adjust the position on the flexible hanging strip.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The anti-falling flexible sling tightening structure for bridge construction is characterized by comprising a tightening belt (1), a spring (2), a fixing seat (3), a sliding piece (4) and a control piece (5); the fixing seat (3) comprises a placing plate (31) and fixing blocks (32), the fixing blocks (32) are respectively arranged at two ends of the placing plate (31), two tightening belts (1) are symmetrically arranged, one ends of the two tightening belts (1) are respectively fixedly connected with the middle part of the lower side of the fixing seat (3), and the other ends of the two tightening belts are respectively spliced with the two fixing blocks (32); the springs (2), the sliding parts (4) and the control parts (5) are all arranged in two, the two springs (2), the sliding parts (4) and the control parts (5) are symmetrically arranged, and the two springs (2), the sliding parts (4) and the control parts (5) respectively control the two tightening belts (1) to be contracted or loosened; the side parts of the two sliding parts (4) are respectively spliced with the two fixed blocks (32), extend into the fixed blocks (32) and are meshed with or separated from the tightening belt (1) through a tooth-shaped structure, and the lower parts of the sliding parts (4) are in sliding connection with the placing plate (31); one end of each control piece (5) is rotationally connected with the placing plate (31), and the other end of each control piece is abutted with the sliding piece (4); one end of each spring (2) is fixedly connected with the placing plate (31), and the other end of each spring is fixedly connected with one side, far away from the fixed block (32), of the sliding piece (4).

2. The bridge construction anti-drop flexible sling tightening structure according to claim 1, wherein two grooves (311) are formed in the upper surface of the placing plate (31), the grooves (311) extend from the middle of the placing plate (31) to the fixing blocks (32), the fixing plates (313) are fixedly arranged on the grooves (311), sliding grooves (321) are formed in the fixing blocks (32) in a penetrating mode, moving grooves (322) are formed in one side, close to the placing plate (31), of the grooves (321), and the moving grooves (322) are communicated with the grooves (311).

3. The bridge construction anti-falling flexible sling tightening structure according to claim 2, wherein one end of the tightening belt (1) is a tightening end (11), the other end is a contact end (12), a plurality of rack structures I are fixedly arranged on the tightening end (11), and the rack structures I are uniformly distributed and arrayed along the length square interval of the tightening belt (1); the tightening end (11) is inserted into the fixed block (32) through the sliding groove (321).

4. The bridge construction anti-falling flexible sling tightening structure according to claim 3, wherein the sliding piece (4) comprises a sliding block (42), one end of the sliding block (42) is provided with a tightening side (41), the upper portion of the other end of the sliding block is provided with an arc-shaped boss (43), the tightening side (41) comprises a plurality of rack structures II, the rack structures II are uniformly distributed and arrayed along the length direction of the sliding block (42), and the rack structures II on the tightening side (41) can extend into the fixing block (32) to be meshed with the rack structures I on the tightening end (11).

5. The bridge construction anti-falling flexible sling tightening structure according to claim 2, wherein the control member (5) comprises a rotating plate (51), a buckling block (52), a rotating shaft (54) and a clip spring (55), the buckling block (52) is arranged on the upper portion of the rotating plate (51), the rotating plate (51) is rotationally connected with the placing plate (31) through the rotating shaft (54), the clip spring (55) is spirally wound on the rotating shaft (54), one end of the clip spring (55) is fixedly connected with the lower portion of the groove (311), and the other end of the clip spring is fixedly connected with the rotating plate (51).

6. The bridge construction anti-falling flexible sling binding structure according to claim 2, wherein the fixing plate (313) is arranged between the rotating plate (51) and the sliding block (42), one side of the spring (2) is fixedly connected with the sliding block (42), and the other end of the spring is fixedly connected with the fixing plate (313).

7. The bridge construction anti-falling flexible sling binding structure according to claim 1, wherein the bridge construction anti-falling flexible sling binding structure is arranged on a sling belt body (7), two ends of the sling belt body (7) are respectively provided with a first sling (71) and a second sling (72), a protective sleeve (9) is arranged in the middle of the sling belt body (7), and a hook (8) is fixedly arranged between the protective sleeve (9) and the first sling (71).

8. The bridge construction anti-falling flexible hanging strip tightening structure according to claim 1, wherein two tightening strips (1) are respectively connected with two ends of the fixing seat (3) to form two annular holes, one annular hole is sleeved between the hook (8) and the protective sleeve (9), and the other annular hole is sleeved between the protective sleeve (9) and the second hanging buckle (72).

9. The bridge construction anti-falling flexible sling tightening structure according to claim 4, wherein a plurality of third rack structures are uniformly distributed on the tightening belt (1) at intervals, inclined planes are arranged on the upper portions of the third rack structures, a plurality of fourth rack structures are uniformly distributed on the sliding block (42) at intervals, matched inclined planes are arranged on the lower portions of the fourth rack structures, and the third rack structures are identical to the fourth rack structures in shape and opposite in direction.