Hinged adjustable lifting appliance suitable for lifting of multiple bailey beam trusses and construction method

Abstract

The invention relates to the technical field of lifting, in particular to a hinged adjustable lifting appliance suitable for lifting of a multi-truss bailey beam truss and a construction method.The hinged adjustable lifting appliance comprises a bailey beam body, a main beam is arranged on the bailey beam body in the width direction of the bailey beam body in a penetrating mode, and the outer sides of the two ends of the main beam are movably sleeved with lifting frames; the hanging frame is provided with a locking bolt, and the end of the locking bolt abuts against the side face of the main beam. An auxiliary beam is arranged above the bailey beam body and located between the two lifting lugs. The Bailey beam has the beneficial effects that the hanging frame is placed in the gap between the two Bailey pieces on the Bailey beam body, the main beam penetrates through the Bailey beam body and the hanging frame, the main beam supports and hangs the Bailey beam body, the locking bolts are arranged on the hanging frame, the hanging frame and the main beam are locked through the locking bolts, and therefore the hanging frame and the main beam can be fixed. The bailey beam body can be prevented from shaking in the length direction of the main beam, and therefore it is guaranteed that the bailey beam body is hoisted more stably and safely.

Description

Technical Field

[0001] This invention relates to the field of hoisting technology, specifically to a hinged adjustable hoisting tool and construction method suitable for hoisting multiple Bailey beam trusses. Background Technology

[0002] A multi-bay bridge truss is a structural unit composed of two or more standard bayonet beams connected side-by-side by specialized connectors such as trusses.

[0003] In the prior art, Chinese utility model with announcement number CN219031463U discloses a new type of Bailey bridge lifting device. In actual use, the wire rope is connected to the lifting hole, avoiding direct contact with the Bailey bridge and reducing the occurrence of deformation of the Bailey bridge due to compression by the wire rope.

[0004] However, current traditional Bailey beam lifting devices suffer from poor positioning between the device and the Bailey beam, fixed lifting angles hindering even stress distribution on all members, low device versatility, and low lifting efficiency. Furthermore, the Bailey beam is prone to displacement and slippage along the length of the device, affecting lifting stability, safety, and applicability, posing significant safety hazards. Therefore, this invention proposes a hinged adjustable lifting device and construction method suitable for lifting multiple Bailey beam trusses to solve the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a hinged adjustable lifting tool and construction method suitable for hoisting multiple Bailey beam trusses, so as to solve the problems mentioned in the background art, such as the displacement and sliding of the lifting tool along the length direction during Bailey beam hoisting, which makes it difficult to flexibly adapt to different hoisting angles and multiple ultra-long and ultra-heavy trusses, as well as safety.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hinged adjustable lifting device adapted for hoisting multiple Bailey beam trusses, comprising: The main body of the Bailey beam has a main beam passing through it along its width. Both ends of the main beam are movably fitted with hanging frames. The hanging frames are located in the gap between two adjacent Bailey panels on the main body of the Bailey beam, and the two hanging frames are symmetrically distributed on both sides of the main body of the Bailey beam. The sides of the two hanging frames that are far apart from each other are respectively attached to the sides of the adjacent Bailey panels. The lifting frame is equipped with locking bolts, and the ends of the locking bolts abut against the side of the main beam. The lifting frame is equipped with lifting lugs connected to it, and the surface of the lifting lugs is provided with lifting holes and through holes. An auxiliary beam is provided above the main body of the Bailey beam, and the auxiliary beam is located between two lifting lugs. Both ends of the auxiliary beam are threaded with suspension screws, and one end of each suspension screw passes through two through holes.

[0007] Preferably, the auxiliary beam includes two "C"-shaped steel channels arranged back to back, and there is a gap between the two steel channels. The two steel channels are fixedly welded by a welding lap plate.

[0008] Preferably, two sets of fixing nuts are sleeved outside the suspension screw. The fixing nuts are fixedly welded between the two steel channels on the auxiliary beam. A through hole is opened at one end of the suspension screw, and a split pin is inserted through the through hole.

[0009] Preferably, adjusting bolts are arranged on both sides at both ends of the auxiliary beam. Waist-shaped holes are opened on the flanges of the two steel channels on the adjusting bolts. The adjusting bolts are arranged vertically and movably penetrate through the waist-shaped holes. The lower ends of the adjusting bolts abut against the top of the Bailey beam body.

[0010] Preferably, a sleeve is movably sleeved outside the adjusting bolt by threads. The sleeve is located inside the steel channel on the auxiliary beam, and the vertical length of the sleeve is less than the vertical height inside the steel channel.

[0011] Preferably, anti-rotation plates are fixed at both the upper and lower ends of the sleeve. One side of the anti-rotation plate fits against the inner side wall of the steel channel on the auxiliary beam. Anti-slip teeth are provided on the upper surface of the anti-rotation plate located at the upper end of the sleeve.

[0012] Preferably, the hanging frame includes two symmetrically arranged "L"-shaped brackets, and the two brackets are rotatably connected by a rotating shaft. A pressing bolt is threaded through the side surface of the bracket, and a pressing block is fixed at one end of the pressing bolt.

[0013] Preferably, a foldable V-shaped frame is arranged at the upper part of the hanging frame. The middle part of the V-shaped frame is rotatably installed at the lower end of the lifting lug through a pin shaft. The two ends of the V-shaped frame are respectively rotatably connected to the upper ends of the two brackets through pin shafts.

[0014] Preferably, torsion springs are sleeved at both ends of the rotating shaft. The torsion springs drive the two brackets on the hanging frame to move away from each other.

[0015] A construction method using the above articulated adjustable lifting tool suitable for hoisting multiple Bailey beam trusses specifically includes the following steps: Step 1: Place the auxiliary beam on the top of the Bailey beam body. Hang the lifting lug at the end of the suspension screw through the perforation, and insert a split pin at one end of the suspension screw to prevent the lifting lug from detaching from the suspension screw. Step 2: Pass the main beam through the Bailey beam body and the two hanging frames in sequence, and then slide the lifting lug along the length direction of the suspension screw until the two hanging frames respectively fit against the sides of the two Bailey sheets on the Bailey beam body. Step 3: Tighten the locking bolt, hang the steel wire rope in the hanging hole, then pull out the split pin at one end of the suspension screw, turn the suspension screw to make the suspension screw detach from the perforation, and remove the auxiliary beam separately. Step 4: Lift the Bailey beam body away.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention places a lifting frame in the gap between two Bailey panels on the Bailey beam body, passes the main beam through the Bailey beam body and the lifting frame, and supports and suspends the Bailey beam body by the main beam. Locking bolts are installed on the lifting frame. After the lifting frame is slid along the length of the main beam, the two lifting frames are respectively attached to the two Bailey panels on the Bailey beam body. Then, the locking bolts lock the lifting frame to the main beam, which can prevent the Bailey beam body from swaying along the length of the main beam, thereby ensuring that the hoisting of the Bailey beam body is more stable and safer. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram showing the connection between the main beam, the hanging frame, and the auxiliary beam of the present invention; Figure 4 This is a three-dimensional schematic diagram of the main beam and suspension frame structure of the present invention; Figure 5 This is a three-dimensional schematic diagram of the lifting lug and auxiliary beam structure of the present invention; Figure 6 This is a schematic diagram of the connection between the suspension screw and the auxiliary beam structure of the present invention; Figure 7 This is a three-dimensional schematic diagram of the sleeve structure of the present invention; Figure 8 This is an exploded view of the hanging frame structure in Embodiment 2 of the present invention.

[0018] In the diagram: 1. Bailey beam body; 2. Main beam; 3. Lifting frame; 31. Locking bolt; 32. Rotating shaft; 33. Clamping bolt; 34. Pressure block; 35. V-shaped frame; 4. Lifting lug; 41. Lifting hole; 42. Through hole; 5. Auxiliary beam; 51. Suspension screw; 511. Fixing nut; 52. Adjusting bolt; 53. Sleeve; 531. Anti-rotation plate; 532. Anti-slip teeth; 54. Welded lap plate; 55. Waist hole. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 8 The present invention provides a technical solution: Example 1: A hinged adjustable lifting device suitable for hoisting multiple Bailey beam trusses, comprising: Bailey beam body 1.

[0021] Specifically, a main beam 2 is inserted through the Bailey beam body 1 along its width direction, such as... Figure 1 and Figure 2 As shown, the Bailey beam body 1 includes multiple Bailey panels arranged side by side. Adjacent Bailey panels are fixedly connected by scissor braces. After the main beam 2 passes through the Bailey beam body 1, the upper surface of the main beam 2 is attached to the lower surface of the top crossbeam of the Bailey beam body 1 for subsequent lifting of the Bailey beam body 1. Lifting frames 3 are movably fitted on the outer sides of both ends of the main beam 2. The lifting frames 3 can be adjusted in position along the length of the main beam 2. The lifting frames 3 are located in the gap between two adjacent Bailey panels on the Bailey beam body 1, and the two lifting frames 3 are symmetrically distributed on both sides of the Bailey beam body 1 to ensure that the position of the Bailey beam body 1 is stable and will not rotate during subsequent lifting. The sides of the two lifting frames 3 that are far apart from each other are attached to the sides of the adjacent Bailey panels. Secondly, a locking bolt 31 is provided on the lifting frame 3, and the end of the locking bolt 31 abuts against the side of the main beam 2. By tightening the locking bolt 31, the lifting frame 3 and the main beam 2 can be locked and fixed, thereby preventing the lifting frame 3 from moving along the length of the main beam 2. At this time, the lifting frame 3 and the main beam 2 form an integral whole. Since the lifting frame 3 abuts against the side of the Bailey bridge sheet, it can effectively prevent the Bailey bridge body 1 from moving relative to the main beam 2 along the length of the main beam 2, thereby improving the stability of the Bailey bridge body 1 during hoisting. A lifting lug 4 is provided above the lifting frame 3 and connected to it. The surface of the lifting lug 4 is provided with a lifting hole 41 and a through hole 42. The lifting hole 41 is mainly used to connect with the external wire rope to facilitate crane lifting. Furthermore, an auxiliary beam 5 is provided above the Bailey beam body 1, and the auxiliary beam 5 is located between two lifting lugs 4. Both ends of the auxiliary beam 5 are threaded with suspension screws 51, and one end of each suspension screw 51 passes through two through holes 42. Before installing the main beam 2, the auxiliary beam 5 is first placed on top of the Bailey beam body 1, and then the lifting frame 3 is suspended by the suspension screws 51. At this time, the lifting frame 3 remains suspended, and the main beam 2 can pass through the lifting frame 3. In other words, the auxiliary beam 5 is mainly set up to provide suspension support for the main beam 2 and the lifting frame 3 before lifting.

[0022] To weld and form the auxiliary beam 5, the auxiliary beam 5 of this application includes two back-to-back "U"-shaped channel steels with a gap between them. The two channel steels are welded and fixed together by welding plates 54. Figure 3 and Figure 6As shown, multiple welding lap plates 54 are provided and are symmetrical on the upper and lower surfaces of the auxiliary beam 5. The multiple welding lap plates 54 are distributed at equal intervals along the length of the auxiliary beam 5 to ensure that the auxiliary beam 5 has a stable structure after welding and will not become loose.

[0023] To connect the suspension screw 51 to the auxiliary beam 5, this application also includes two sets of fixing nuts 511 sleeved on the outside of the suspension screw 51. The fixing nuts 511 are fixedly welded between two channel steels on the auxiliary beam 5, such as... Figure 6 As shown, the fixing nut 511 is mainly used to install the suspension screw 51 in the gap in the middle of the auxiliary beam 5. By turning the suspension screw 51, the extension length of one end of the suspension screw 51 can be adjusted, or the suspension screw 51 can be separated from the auxiliary beam 5. A through hole is provided at one end of the suspension screw 51, and a cotter pin passes through the through hole. Figure 5 As shown, when the auxiliary beam 5 suspends the lug 4, inserting a cotter pin into the through hole at one end of the suspension screw 51 can effectively prevent the lug 4 from moving and detaching from the suspension screw 51.

[0024] To adjust the vertical height of the auxiliary beam 5, this application also includes adjusting bolts 52 on both sides of the auxiliary beam 5. The flanges of the two channel steels on the adjusting bolts 52 are provided with slotted holes 55. The slotted holes 55 are elongated and extend along the length of the auxiliary beam 5. The adjusting bolts 52 can move a certain distance along the length of the slotted holes 55 to adjust their position. The adjusting bolts 52 are vertically positioned and extend through the slotted holes 55. The lower end of the adjusting bolts 52 rests against the top of the Bailey beam body 1. The adjusting bolts 52 are mainly used to adjust the vertical distance between the auxiliary beam 5 and the Bailey beam body 1, thereby ensuring that the main beam 2 can be inserted precisely when the suspension frame 3 is suspended.

[0025] To prevent the adjusting bolt 52 from tilting, this application further includes a sleeve 53 threadedly fitted onto the outside of the adjusting bolt 52. The sleeve 53 is located inside the channel steel on the auxiliary beam 5, and the vertical length of the sleeve 53 is less than the vertical height of the inner side of the channel steel. Figure 5 and Figure 6As shown, when adjusting bolt 52 is turned so that adjusting bolt 52 and sleeve 53 rotate relative to each other, adjusting bolt 52 can move up and down in the vertical direction. When the lower end of adjusting bolt 52 is flush with or higher than the lower surface of auxiliary beam 5, sleeve 53 falls down by gravity and rests on the lower flange of channel steel. At this time, adjusting bolt 52 and sleeve 53 can move easily along the length of waist hole 55. When the lower end of adjusting bolt 52 is lower than the lower surface of auxiliary beam 5, the lower end of adjusting bolt 52 abuts against the top of Bailey beam body 1. Auxiliary beam 5 is supported and suspended at this time. The friction between the upper end of sleeve 53 and channel steel will limit sleeve 53, thereby preventing sleeve 53 from moving along the length of waist hole 55. In addition, in order to prevent adjusting bolt 52 and sleeve 53 from tilting, the vertical height of sleeve 53 is set to be slightly less than the vertical height of the inner side of channel steel, or the two are exactly equal, but without generating compressive force.

[0026] To further improve the stability of the sleeve 53, this application also includes anti-rotation plates 531 fixed at both the upper and lower ends of the sleeve 53. One side of the anti-rotation plate 531 is attached to the inner wall of the channel steel on the auxiliary beam 5. Figure 5 and Figure 7 As shown, the anti-rotation plate 531 prevents the sleeve 53 from rotating. Therefore, when the adjusting bolt 52 is turned, it will not cause the sleeve 53 to rotate. The upper surface of the anti-rotation plate 531 located at the upper end of the sleeve 53 is provided with anti-slip teeth 532. The anti-slip teeth 532 are used to clamp the upper flange of the channel steel, thereby increasing the friction between the upper end of the sleeve 53 and the upper flange of the channel steel. This prevents the adjusting bolt 52 from moving relative to the auxiliary beam 5 along the length of the auxiliary beam 5 when the auxiliary beam 5 is suspended.

[0027] In embodiment two, the hanging frame 3 of this application may further include two symmetrically arranged "L"-shaped supports, and the two supports are rotatably connected by a pivot 32, such as... Figure 8 As shown, the two supports can rotate away from each other, thereby increasing the cross-sectional area of ​​the hole in the middle of the hanging frame 3, ensuring that the main beam 2 can pass through the hanging frame 3 more easily. A clamping bolt 33 is threaded through the side of the support, and a pressure block 34 is fixed to one end of the clamping bolt 33. When the two supports rotate close to each other, the pressure block 34 can automatically press against the side of the main beam 2, thereby realizing the automatic positioning between the hanging frame 3 and the main beam 2.

[0028] In order to connect the lifting frame 3 to the lifting lug 4, this application also has a foldable V-shaped frame 35 provided on the upper part of the lifting frame 3. The middle part of the V-shaped frame 35 is rotatably installed on the lower end of the lifting lug 4 through a pin. The two ends of the V-shaped frame 35 are rotatably connected to the upper ends of two supports respectively through pins. The V-shaped frame 35 is provided to cooperate with the two supports on the lifting frame 3 to ensure that when the lifting lug 4 is lifted, the V-shaped frame 35 and the lifting frame 3 can automatically fold and deform under the gravity of the main beam 2 and the Bailey beam body 1, thereby realizing the automatic clamping and positioning of the lifting frame 3 on the main beam 2.

[0029] In order to automatically unfold the lifting frame 3, this application also has torsion springs sleeved at both ends of the rotating shaft 32. The torsion springs drive the two supports on the lifting frame 3 to move away from each other. The torsion force of the torsion springs is greater than the weight of the lifting frame 3 itself. Therefore, when the lifting frame 3 is suspended, the lifting frame 3 can automatically unfold under the action of the torsion springs, which facilitates the insertion of the main beam 2. After the main beam 2 passes through the lifting frame 3, the weight of the main beam 2 is large, which can automatically press down on the lifting frame 3 and drive the lifting frame 3 to automatically fold and deform, realizing the initial pre-positioning of the lifting frame 3 and the main beam 2. After that, when lifting, the weight of the Bailey beam body 1 and the main beam 2 act together on the lifting frame 3, and the pressure block 34 can stably lock the main beam 2, thereby preventing the lifting frame 3 and the main beam 2 from sliding relative to each other.

[0030] This application also discloses a construction method using the above-mentioned articulated adjustable lifting device adapted for hoisting multiple Bailey beam trusses, specifically including the following steps: Step 1: Place the auxiliary beam 5 on top of the Bailey beam body 1, suspend the lug 4 at the end of the suspension screw 51 through the through hole 42, and insert a cotter pin into one end of the suspension screw 51 to prevent the lug 4 from detaching from the suspension screw 51. Step 2: Pass the main beam 2 through the Bailey beam body 1 and the two hanging frames 3 in sequence, and then slide the lifting lug 4 along the length of the suspension screw 51 until the two hanging frames 3 respectively fit against the sides of the two Bailey panels on the Bailey beam body 1. Step 3: Tighten the locking bolt 31, hang the wire rope in the lifting hole 41, then pull out the cotter pin at one end of the suspension screw 51, turn the suspension screw 51 to disengage the suspension screw 51 from the through hole 42, and remove the auxiliary beam 5 separately. Step 4: Lift the Bailey beam body 1 away.

[0031] Although embodiments of the invention 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 to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hinged adjustable lifting device suitable for hoisting multiple Bailey beam trusses, characterized in that: Including: The Bailey beam body (1), on which a main beam (2) is penetrated along its width direction. Suspension frames (3) are movably sleeved on the outer sides of both ends of the main beam (2). The suspension frames (3) are located in the gaps between adjacent bays of Bailey sheets on the Bailey beam body (1), and the two suspension frames (3) are symmetrically distributed on both sides of the Bailey beam body (1). The mutually facing sides of the two suspension frames (3) are respectively abutted against the sides of the adjacent Bailey sheets. Locking bolts (31) are provided on the suspension frames (3), and the ends of the locking bolts (31) are abutted against the side surface of the main beam (2). Lifting lugs (4) connected thereto are provided above the suspension frames (3), and lifting holes (41) and through holes (42) are formed on the surfaces of the lifting lugs (4). An auxiliary beam (5) is provided above the Bailey beam body (1), and the auxiliary beam (5) is located between the two lifting lugs (4). Suspension screws (51) are installed at both ends of the auxiliary beam (5) by threads, and one ends of the two suspension screws (51) respectively penetrate through the two through holes (42) movably.

2. The hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 1, characterized in that: The auxiliary beam (5) includes two "C"-shaped steel channels arranged back to back, and a gap is left between the two steel channels. The two steel channels are fixedly welded by a welding lap plate (54).

3. The hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 2, characterized in that: Two groups of fixing nuts (511) are sleeved on the outer sides of the suspension screws (51). The fixing nuts (511) are fixedly welded between the two steel channels on the auxiliary beam (5). A through hole is formed at one end of the suspension screw (51), and a split pin is penetrated through the through hole.

4. The hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 3, characterized in that: Adjusting bolts (52) are provided on both sides at both ends of the auxiliary beam (5). Waist-shaped holes (55) are formed on the flanges of the two steel channels of the adjusting bolts (52). The adjusting bolts (52) are arranged vertically and penetrate through the waist-shaped holes (55) movably. The lower ends of the adjusting bolts (52) are abutted against the top of the Bailey beam body (1).

5. The hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 4, characterized in that: Sleeves (53) are movably sleeved on the outer sides of the adjusting bolts (52) by threads. The sleeves (53) are located inside the steel channels of the auxiliary beam (5), and the vertical length of the sleeves (53) is less than the vertical height inside the steel channels.

6. The hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 5, characterized in that: Anti-rotation plates (531) are fixed at both the upper and lower ends of the sleeves (53). One side of the anti-rotation plates (531) is abutted against the inner side wall of the steel channels of the auxiliary beam (5). Anti-slip teeth (532) are provided on the upper surfaces of the anti-rotation plates (531) at the upper ends of the sleeves (53).

7. The hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 6, characterized in that: The suspension frame (3) includes two symmetrically arranged "L"-shaped brackets, and the two brackets are rotatably connected by a rotating shaft (32). Compression bolts (33) are penetrated through the sides of the brackets by threads, and a pressing block (34) is fixed at one end of the compression bolts (33).

8. The articulated adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 7, characterized in that: A foldable V-shaped frame (35) is provided at the upper part of the suspension frame (3). The middle part of the V-shaped frame (35) is rotatably installed at the lower end of the lifting lug (4) by a pin shaft. The two ends of the V-shaped frame (35) are respectively rotatably connected to the upper ends of the two brackets by pin shafts.

9. A hinged adjustable lifting device for hoisting multiple Bailey beam trusses according to claim 8, characterized in that: Torsion springs are sleeved at both ends of the rotating shaft (32), and the torsion springs drive the two brackets on the suspension frame (3) to move away from each other.

10. A construction method using the articulated adjustable lifting device for hoisting multiple Bailey beam trusses as described in claim 9, characterized in that: Specifically including the following steps: Step 1: Place the auxiliary beam (5) on top of the Bailey beam body (1), suspend the lug (4) at the end of the suspension screw (51) through the perforation (42), and insert a cotter pin at one end of the suspension screw (51) to prevent the lug (4) from detaching from the suspension screw (51); Step 2: Pass the main beam (2) through the Bailey beam body (1) and the two hanging frames (3) in sequence, and then slide the lifting lug (4) along the length of the suspension screw (51) until the two hanging frames (3) are respectively attached to the sides of the two Bailey pieces on the Bailey beam body (1); Step 3: Tighten the locking bolt (31), hang the wire rope in the lifting hole (41), then pull out the cotter pin at one end of the suspension screw (51), turn the suspension screw (51) to disengage the suspension screw (51) from the through hole (42), and remove the auxiliary beam (5) separately. Step 4: Lift away the Bailey beam body (1).

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