Auxiliary hoisting device for bridge construction

Abstract

The application provides a kind of auxiliary hoisting device for bridge construction, relating to hoisting equipment technical field, including base, the upper surface of base is rotatably installed with support frame, the upper side of support frame is slidably installed with limiting frame, the inner wall of limiting frame is evenly transmission installed with three ropes, the lower end of three ropes is fixedly installed with positioning frame, the lower surface of positioning frame is rotatably installed with hoisting frame, the surface of hoisting frame is provided with limiting device, the limiting device includes limiting structure with the function of limiting the placement of reinforcing steel bars.The application, by setting limiting device, facilitates the limiting work in the process of lifting reinforcing steel bars, reduces the situation that reinforcing steel bars are easily inclined and shaken in the process of lifting when hooks on hoisting equipment directly lift reinforcing steel bars, the shaken reinforcing steel bars not only easily slip in the process of lifting, but also easily scratch nearby buildings, as much as possible improves the safety in the process of lifting reinforcing steel bars.

Description

Technical Field

[0001] This invention relates to the field of hoisting equipment technology, and in particular to an auxiliary hoisting device for bridge construction. Background Technology

[0002] Lifting equipment, also known as hoisting equipment, is a type of mechanical equipment used in construction engineering to lift building materials, facilitating the transport of building materials from lower to higher locations. It is an indispensable piece of mechanical equipment in construction engineering.

[0003] Chinese patent application CN111661766A discloses an auxiliary hoisting device for bridge construction, including a connecting frame and a hoisting frame. The base has a hollow structure, and a planar bearing is installed inside the base. The bottom of the main frame is connected to the base, and a winch is fixedly installed on the outside of the main frame, connected to an external control circuit. A lead screw is rotatably connected to the top of the main frame, and one end of the lead screw is connected to a transmission belt. An adjusting motor is installed on the top of the main frame and connected to an external control circuit. This invention can drive the worm gear inside the connecting frame to rotate according to the required placement angle of the hoisted item. The worm gear further drives the worm wheel to rotate, thereby driving the hoisting frame to rotate. The hoisting frame then drives the hoisted item to rotate, better meeting the needs of different placement angles of the hoisted item. After the hoisting frame is adjusted, the self-locking characteristics of the worm gear and worm wheel fix the hoisting frame, ensuring its stability during use.

[0004] However, the aforementioned patents and existing technologies still have the following drawbacks:

[0005] When using hoisting equipment to lift steel bars for bridge construction, the steel bars are often slender, and directly lifting them with the hooks on the hoisting equipment can easily cause them to tilt and sway during the lifting process. This swaying can lead to the steel bars slipping during hoisting and can also scratch nearby buildings, reducing the efficiency of lifting the steel bars. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies that make it inconvenient to lift steel reinforcement materials, and to propose an auxiliary lifting device for bridge construction.

[0007] To achieve the above object, the present invention adopts the following technical solution: An auxiliary hoisting device for bridge construction, comprising a base, on the upper surface of the base, a support frame is rotatably installed, on the upper side of the support frame, a limiting frame is slidably installed, inside the limiting frame, three ropes are evenly driven and installed, at the lower ends of the three ropes, a positioning frame is fixedly installed, on the lower surface of the positioning frame, a hoisting frame is rotatably installed, on the surface of the hoisting frame, a limiting device is provided, the limiting device includes a limiting structure for limiting the placement of steel bars, a driving structure for driving the components in the limiting structure to move, a jacking structure for conveniently pushing the steel bars out of the limiting structure, and an anti-slip structure for enhancing the pressing effect on the steel bars.

[0008] The effects achieved by the above components are as follows: By providing the limiting device, it facilitates the limiting work during the hoisting process of steel bar materials, reducing the situation that the steel bars are prone to skew and sway during hoisting when directly using the hook on the hoisting equipment. The swaying steel bars are not only prone to slipping during hoisting but also prone to scratching the nearby buildings, thereby尽可能 improving the safety during the hoisting process of steel bar materials.

[0009] Preferably, the limiting device includes four first automatic telescopic rods, the four first automatic telescopic rods are fixedly connected to the side wall of the hoisting frame in two groups, at the output ends of the two first automatic telescopic rods, a pressing block in a "one" character structure is fixedly installed, inside the pressing block, a slider is slidably installed, at the lower surface of the slider, a placing block in a "V" shape structure is fixedly installed, inside the placing block, a number of limiting grooves with a cross-section in a "V" shape structure are evenly opened, the driving structure includes a connecting block, the connecting block is fixedly connected to the side wall of the pressing block, on the side wall of the placing block, a positioning block is fixedly installed, inside the connecting block, a screw rod is rotatably installed, the screw rod is in threaded connection with the inside of the positioning block, on the side wall of the pressing block, a fixed frame is fixedly installed, inside the fixed frame, a motor is fixedly installed, and the output end of the motor is fixedly connected to the end face of the screw rod.

[0010] The effects achieved by the above components are as follows: When it is necessary to lift the steel bar material, place the steel bar material on the inner walls of the two placing blocks. At this time, the steel bar will roll on the inner walls of the "V"-shaped placing blocks, reducing the situation where the steel bar rolls out from the inner walls of the placing blocks. Placing the steel bars on the inner walls of different limiting grooves facilitates the isolation work between the steel bars, further reducing the situation of mutual extrusion and collision during the transportation of the steel bars, thereby improving the safety during the lifting of the steel bars. Start the motor, and the motor will drive the screw rod to rotate inside the connecting block, facilitating the driving work of the positioning block and the placing block, and thus facilitating the pressing and limiting work of the steel bar between the pressing block and the placing block. Start the first automatic telescopic rod, which can adjust the distance between the two placing blocks, facilitating the lifting work of steel bar materials with different lengths and sizes. When the steel bar is lifted to the bridge position, open the placing block and the pressing block.

[0011] Preferably, the jacking structure includes a second automatic telescopic rod, which is fixedly connected to the lower side of the placing block, and a jacking block with an inverted "I" - shaped cross - section is fixedly installed at the output end of the second automatic telescopic rod.

[0012] The effects achieved by the above components are as follows: Start the second automatic telescopic rod, and the second automatic telescopic rod will drive the jacking block to eject the steel bar material arranged on the inner wall of the limiting groove. At this time, the steel bar material will roll out along the inclined surface of the jacking block, thus facilitating the driving work of the steel bar material located on the inner wall of the placing block.

[0013] Preferably, the anti - slip structure includes an elastic pad, which is located outside the pressing block. A number of anti - slip strips symmetrically distributed on both sides of the elastic pad are adhesively bonded to the surface of the elastic pad. The cross - section of the anti - slip strip is triangular. A number of trapezoidal convex blocks are adhesively bonded to the upper surface of the elastic pad, and mounting grooves adapted to the convex blocks are opened on the lower side of the pressing block.

[0014] The effects achieved by the above components are as follows: The elastic pad fills the space between the steel bar and the pressing block, further improving the stability during the lifting of the steel bar. The setting of the anti - slip strips increases the friction between the steel bar and the pressing block, reducing the situation of the steel bar sliding longitudinally. The trapezoidal convex blocks are installed on the inner wall of the mounting groove, facilitating the regular replacement work of the elastic pad by the staff, and further ensuring the safety during the work process.

[0015] Preferably, the side wall of the hoisting frame is provided with a protective device, which includes two support plates. Both support plates are fixedly installed on the side wall of the hoisting frame. Telescopic rods are rotatably installed on the lower surface of both support plates. Fixing strips are fixedly installed at the lower ends of both telescopic rods. Fixing pins are obliquely fixedly installed on the upper surface of the fixing strips. A rotating frame is fixedly installed on the side wall of the fixing pins. Two rotating strips are rotatably installed on the inner wall of the rotating frame. Elastic cloth is fixedly installed on the side of the two rotating strips that are close to each other. There is an angle between the rotating strips and the fixing strips between ° and °.

[0016] The effects achieved by the above components are as follows: rotating the two rotating bars unfolds the elastic cloth, forming an inverted conical cover structure between the two elastic cloths. This facilitates the collection of materials that fall out of the cargo boxes filled with sand, gravel, building materials, etc., and improves the safety of hoisting cargo boxes filled with sand, gravel, building materials, etc. Because there is an angle of 15°-30° between the rotating bars and the fixed bars, the situation of crushed stone products rolling out from the edge of the elastic cloth is reduced. By setting the elastic cloth as an extendable structure, the flexibility of hoisting different products is improved, and the flexibility of using the protective device is further improved.

[0017] Preferably, a binding rope is fixedly installed on the side wall of the rotating bar, and a ball is fixedly installed on the end face of the binding rope.

[0018] The effect achieved by the above components is that the four rotating strips are tied together in pairs with binding ropes, which facilitates the fixing of the rotating strips after they are unfolded.

[0019] Preferably, the internal threads of the support plate are threaded with bolts, and a fixing plate is fixedly installed on the upper side of the telescopic rod.

[0020] The effect achieved by the above components is as follows: after the cargo box is lifted to a height of about 20 centimeters above the ground, the telescopic rod is rotated, and the fixing bars on the two telescopic rods rotate to a position close to each other. At this time, the bolt is rotated and pressed into the fixing plate, which can realize the fixing of the position of the telescopic rod after rotation.

[0021] Preferably, the surface of the fixing strip is provided with a collecting device, the collecting device including a circular column, the circular column is fixedly installed on the lower surface of the fixing strip, a support strip is rotatably installed on the surface of the circular column, an elastic wheel is fixedly installed on the side wall of the support strip, the elastic wheel is formed by folding several elastic pieces, and a collecting bag is covered on the surface of the elastic wheel, the collecting bag having a stacked structure.

[0022] The effects achieved by the above components are as follows: the elastic wheel will hold the protrusions tightly at the port of the collection bag, thereby facilitating the quick tightening and fixing of the collection bag; the folded structure of the collection bag improves the collection efficiency of shaken materials; and the materials that roll off the elastic cloth will be collected through the collection bag, facilitating the centralized processing of the shaken materials.

[0023] Preferably, the sidewall of the elastic wheel is uniformly and fixedly equipped with a plurality of protrusions, the lower end of the elastic wheel is fixedly equipped with a frustum-shaped cover, and the internal threads of the support bar are threaded through a threaded component.

[0024] The effect achieved by the above components is as follows: after rotating the support bar on any one of the circular columns on the two fixed bars to the center point of the two elastic cloths, the threaded part is rotated and pressed against the fixed bar, which can temporarily fix the elastic wheel after rotation. The collection bag is then put into the inner side of the truncated cone cover, which facilitates the quick connection between the collection bag and the elastic wheel. After the collection bag is put into the protrusion position, the rectangular ring is released, and the elastic wheel will reset and insert the protrusion into the inside of the collection bag.

[0025] Preferably, the sidewall of the elastic wheel is provided with a tightening structure, the tightening structure includes a plurality of limiting frames, all of which are fixedly installed on the sidewall of the elastic wheel. A frame is fixedly installed on the sidewall of the elastic wheel, and a tightening rope is sleeved between the elastic wheel and the limiting frames. Rectangular rings are fixedly connected to both ends of the tightening rope.

[0026] The effect achieved by the above components is as follows: the rectangular ring is twisted, which drives the tightening rope to twist, thereby tightening the elastic wheel and shortening the inner diameter of the elastic wheel.

[0027] Compared with the prior art, the advantages and positive effects of the present invention are as follows:

[0028] 1. In this invention, by setting a limiting device, the limiting work during the lifting of steel reinforcement materials is facilitated, and the situation that the steel reinforcement is prone to tilting and shaking during the lifting process is reduced by directly lifting the hook on the lifting equipment. The shaking steel reinforcement is not only prone to slipping during the lifting process, but also prone to scratching nearby buildings, thereby improving the safety of steel reinforcement materials during the lifting process as much as possible.

[0029] 2. In this invention, by setting up a protective device, it is convenient to collect materials that fall off during the hoisting of cargo boxes containing sand, gravel, building materials, etc. This not only avoids waste of materials, but also reduces the possibility of materials injuring buildings or people.

[0030] 3. In this invention, by setting up a collection device, the centralized processing of shaken-off materials is facilitated, and the efficiency of centralized processing of shaken-off materials is further improved. Attached Figure Description

[0031] Figure 1 This invention provides a three-dimensional structural schematic diagram of an auxiliary hoisting device for bridge construction;

[0032] Figure 2 This invention presents another structural schematic diagram of an auxiliary hoisting device for bridge construction.

[0033] Figure 3 This invention proposes an auxiliary hoisting device for bridge construction. Figure 1 A partial structural diagram;

[0034] Figure 4 This invention proposes an auxiliary hoisting device for bridge construction. Figure 3 Enlarged view of point A;

[0035] Figure 5 This invention provides a schematic diagram of the anti-slip structure in an auxiliary hoisting device for bridge construction.

[0036] Figure 6 This invention proposes an auxiliary hoisting device for bridge construction. Figure 5 A partial sectional view of the structure;

[0037] Figure 7 This invention proposes an auxiliary hoisting device for bridge construction. Figure 3 Enlarged view of point B;

[0038] Figure 8 This invention proposes an auxiliary hoisting device for bridge construction. Figure 3 Enlarged view of point C;

[0039] Figure 9 This invention proposes an auxiliary hoisting device for bridge construction. Figure 2 A partial structural diagram;

[0040] Figure 10 This invention proposes an auxiliary hoisting device for bridge construction. Figure 9 Enlarged view of point D.

[0041] Legend: 1. Base; 2. Support frame; 3. Limiting frame; 4. Rope; 5. Limiting device; 51. Limiting structure; 511. First automatic telescopic rod; 512. Pressure block; 513. Placement block; 514. Slider; 515. Limiting groove; 52. Lifting structure; 521. Second automatic telescopic rod; 522. Lifting block; 53. Drive structure; 531. Screw; 532. Motor; 533. Fixing frame; 534. Positioning block; 535. Connecting block; 54. Anti-slip structure; 541. Elastic pad; 542. Protrusion; 543. 6. Anti-slip strip; 7. Positioning frame; 8. Protective device; 9. Support plate; 10. Telescopic rod; 11. Elastic cloth; 12. Fixing strip; 13. Rotating strip; 14. Binding rope; 15. Fixing pin; 16. Rotating frame; 17. Fixing disc; 18. Bolt; 19. Collection device; 20. Elastic wheel; 20. Collection bag; 21. Tightening structure; 22. Tightening rope; 33. Frame; 44. Rectangular ring; 55. Limiting frame; 66. Frustum cover; 77. Spike; 88. Circular column; 9. Support strip; 10. Lifting frame. Detailed Implementation

[0042] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0043] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0044] Example 1, such as Figure 1-10 As shown, the present invention provides an auxiliary hoisting device for bridge construction, including a base 1, a support frame 2 rotatably mounted on the upper surface of the base 1, a limit frame 3 slidably mounted on the upper side of the support frame 2, three ropes 4 uniformly and driveably mounted on the inner wall of the limit frame 3, a positioning frame 6 fixedly mounted on the lower end of the three ropes 4, a hoisting frame 9 rotatably mounted on the lower surface of the positioning frame 6, a limit device 5 provided on the surface of the hoisting frame 9, a protective device 7 provided on the side wall of the hoisting frame 9, and a collecting device 8 provided on the surface of the fixing strip 704.

[0045] The following section will explain the specific settings and functions of the limiting device 5, the protective device 7, and the collecting device 8.

[0046] like Figure 1 - Figure 6As shown, the limiting device 5 includes a limiting structure 51 for limiting the placement of the reinforcing bar, a driving structure 53 for moving the components in the limiting structure 51, a lifting structure 52 for easily pushing the reinforcing bar out of the limiting structure 51, and an anti-slip structure 54 for improving the clamping effect on the reinforcing bar. By setting the limiting device 5, the limiting work during the lifting of reinforcing bar materials is facilitated, reducing the possibility of the reinforcing bar tilting and swaying during the lifting process if the hook on the lifting equipment is directly used for lifting. Swaying reinforcing bars are not only prone to slipping during the lifting process, but also prone to scratching nearby buildings, thus maximizing the safety of the reinforcing bar material lifting process.

[0047] The limiting device 5 includes four first automatic telescopic rods 511, which are fixedly connected to the side wall of the hoisting frame 9 in pairs. Two pressure blocks 512 with a "V"-shaped structure are fixedly installed at the output ends of the two first automatic telescopic rods 511. A slider 514 is slidably installed inside the pressure block 512. A placement block 513 with a "V"-shaped structure is fixedly installed on the lower surface of the slider 514. Several "V"-shaped cross-sections are evenly distributed on the inner side of the placement block 513. The slot 515 and the drive structure 53 include a connecting block 535, which is fixedly connected to the side wall of the pressure block 512. A positioning block 534 is fixedly installed on the side wall of the placement block 513. A screw 531 is rotatably installed inside the connecting block 535. The screw 531 and the positioning block 534 are internally threadedly connected. A fixing frame 533 is fixedly installed on the side wall of the pressure block 512. A motor 532 is fixedly installed inside the fixing frame 533. The output end of the motor 532 is fixedly connected to the end face of the screw 531. When it is necessary to lift the steel reinforcement material, the steel reinforcement material is placed on the inner wall of the two placement blocks 513. At this time, the steel reinforcement will roll on the inner wall of the "V"-shaped structure placement block 513, reducing the possibility of the steel reinforcement rolling out from the inner wall of the placement block 513. Placing the steel reinforcement on the inner wall of different limiting grooves 515 facilitates the isolation between the steel reinforcement and further reduces the possibility of mutual squeezing and collision during the transportation of the steel reinforcement, thereby improving the safety of the steel reinforcement lifting process. The motor 532 is started, and the motor 532 drives the screw 531 to rotate inside the connecting block 535, which facilitates the driving of the positioning block 534 and the placement block 513, thereby facilitating the pressing and limiting of the steel reinforcement between the pressure block 512 and the placement block 513. The first automatic telescopic rod 511 is started, which can realize the adjustment of the distance between the two placement blocks 513, which facilitates the lifting of steel reinforcement materials of different lengths. When the steel reinforcement is lifted to the bridge position, the placement block 513 and the pressure block 512 are opened.

[0048] The lifting structure 52 includes a second automatic telescopic rod 521, which is fixedly connected to the lower side of the placement block 513. A lifting block 522 with an inverted "U"-shaped cross-section is fixedly installed at the output end of the second automatic telescopic rod 521. When the second automatic telescopic rod 521 is activated, it drives the lifting block 522 to push out the reinforcing steel material arranged on the inner wall of the limiting groove 515. At this time, the reinforcing steel material rolls out along the inclined surface of the lifting block 522, thus facilitating the driving operation of the reinforcing steel material located on the inner wall of the placement block 513.

[0049] The anti-slip structure 54 includes an elastic pad 541 located on the outside of the pressure block 512. Several anti-slip strips 543, symmetrically distributed on both sides of the elastic pad 541, are bonded to the surface of the elastic pad 541. The anti-slip strips 543 have a triangular cross-section. Several trapezoidal protrusions 542 are bonded to the upper surface of the elastic pad 541. An installation groove matching the protrusions 542 is provided on the lower side of the pressure block 512. The elastic pad 541 fills the space between the reinforcing bar and the pressure block 512, further improving the stability during the reinforcement process. The anti-slip strips 543 increase the friction between the reinforcing bar and the pressure block 512, reducing longitudinal slippage of the reinforcing bar. The trapezoidal protrusions 542 are installed on the inner wall of the installation groove, facilitating the periodic replacement of the elastic pad 541 and further ensuring safety during operation.

[0050] like Figure 1 and Figure 3 as well as Figure 7 and Figure 8 As shown, the protective device 7 includes two support plates 701, both of which are fixedly installed on the side wall of the hoisting frame 9. Telescopic rods 702 are rotatably installed on the lower surface of both support plates 701. Fixing strips 704 are fixedly installed at the lower ends of both telescopic rods 702. Fixing pins 707 are obliquely fixedly installed on the upper surface of the fixing strips 704. A rotating frame 708 is fixedly installed on the side wall of the fixing pins 707. Two rotating strips 705 are rotatably installed on the inner wall of the rotating frame 708. An elastic cloth 703 is fixedly installed on the side of the two rotating strips 705 that are close to each other. There is an included angle between the rotating strips 705 and the fixing strips 704 between 15° and 30°. Rotating the two rotating bars 705 unfolds the elastic cloth 703, forming an inverted conical cover structure between the two elastic cloths 703. This facilitates the collection of materials that have fallen from containers filled with sand, gravel, building materials, etc., and improves the safety of hoisting containers filled with sand, gravel, building materials, etc. Because there is an angle of 15°-30° between the rotating bars 705 and the fixing bars 704, the occurrence of crushed stone products rolling out from the edge of the elastic cloth 703 is reduced. By setting the elastic cloth 703 as an extendable structure, the flexibility of hoisting different products is improved, and the flexibility of using the protective device 7 is further improved.

[0051] A binding rope 706 is fixedly installed on the side wall of the rotating bar 705, and a ball is fixedly installed on the end face of the binding rope 706. The four rotating bars 705 are tied together in pairs by the binding rope 706, facilitating the fixing of the rotating bars 705 after unfolding. A bolt 710 is threaded through the internal thread of the support plate 701, and a fixing plate 709 is fixedly installed on the upper side of the telescopic rod 702. After the cargo box is lifted to a height of about 20 centimeters above the ground by the fixing bars 704, the telescopic rod 702 is rotated, and the fixing bars 704 on the two telescopic rods 702 rotate to a position close to each other. At this time, rotating the bolt 710 presses it against the fixing plate 709, thus fixing the position of the telescopic rod 702 after rotation.

[0052] like Figure 1 - Figure 3 as well as Figure 9 - Figure 10 As shown, the collection device 8 includes a circular column 86, which is fixedly installed on the lower surface of the fixing strip 704. A support strip 87 is rotatably mounted on the surface of the circular column 86. An elastic wheel 81 is fixedly installed on the side wall of the support strip 87. The elastic wheel 81 is formed by folding several spring pieces. A collection bag 82 is fitted onto the surface of the elastic wheel 81. The collection bag 82 has a folded structure. The elastic wheel 81 will hold the protrusions 85 tightly against the port of the collection bag 82, thereby facilitating the quick tightening and fixing of the collection bag 82. The folded structure of the collection bag 82 improves the collection efficiency of shaken materials. The material rolling off the elastic cloth 703 will be collected through the collection bag 82, facilitating the centralized processing of the shaken materials. Several protrusions 85 are evenly fixedly installed on the side wall of the elastic wheel 81. A frustum-shaped cover 84 is fixedly installed at the lower end of the elastic wheel 81. Threaded parts are threaded through the internal threads of the support strip 87. After rotating the support bar 87 on either of the circular columns 86 on the two fixed bars 704 to the center point of the two elastic cloths 703, the threaded part is pressed against the fixed bar 704, which can temporarily fix the elastic wheel 81 after rotation. The collection bag 82 is then inserted from the inside of the frustum cover 84, which facilitates the quick connection between the collection bag 82 and the elastic wheel 81. When the collection bag 82 is fitted into the position of the protrusion 85, the rectangular ring 833 is released. At this time, the elastic wheel 81 will reset and insert the protrusion 85 into the inside of the collection bag 82.

[0053] The side wall of the elastic wheel 81 is provided with a tightening structure 83, which includes several limiting frames 834. The limiting frames 834 are evenly fixedly installed on the side wall of the elastic wheel 81. A frame 832 is fixedly installed on the side wall of the elastic wheel 81. A tightening rope 831 is sleeved between the elastic wheel 81 and the limiting frames 834. Rectangular rings 833 are fixedly connected to both ends of the tightening rope 831. Twisting the rectangular rings 833 will cause the tightening rope 831 to twist, thereby tightening the elastic wheel 81 and shortening its inner diameter.

[0054] The overall working principle is as follows: When lifting steel bars, the steel bars are placed on the inner walls of two placement blocks 513. The steel bars will roll within the "V"-shaped placement blocks 513, reducing the possibility of them rolling out. Placing the steel bars on the inner walls of different limiting grooves 515 facilitates isolation between them, further reducing the risk of mutual compression and collision during transport, thus improving safety during lifting. Starting the motor 532 drives the screw 531 to rotate inside the connecting block 535, facilitating the driving of the positioning block 534 and placement blocks 513, thereby facilitating the clamping and limiting of the steel bars between the pressure block 512 and placement blocks 513. An elastic pad 541 is filled between the steel bars and the pressure block 512, further improving stability during lifting. The anti-slip strip 543 increases the friction between the steel bars and the pressure block 512, reducing longitudinal slippage of the steel bars. A tiered protrusion 542 is installed on the safety... The inner wall of the groove facilitates the regular replacement of the elastic pad 541 by the staff, further ensuring safety during the work process. Activating the first automatic telescopic rod 511 allows for adjustment of the distance between the two placement blocks 513, facilitating the lifting of steel bars of different lengths. When the steel bars are lifted to the bridge position, the placement block 513 and the pressure block 512 are opened, and the second automatic telescopic rod 521 is activated. The second automatic telescopic rod 521 will drive the lifting block 522 to push out the steel bars arranged on the inner wall of the limiting groove 515. At this time, the steel bars will roll out along the inclined surface of the lifting block 522, thus facilitating the driving of the steel bars located on the inner wall of the placement block 513. By setting the limiting device 5, the limiting work during the lifting of steel bars is facilitated, reducing the possibility of the steel bars tilting and swaying during the lifting process if the hooks on the lifting equipment are directly used to lift the steel bars. Shaking steel bars are not only prone to slipping during the lifting process, but also prone to scratching nearby buildings, thus maximizing the safety of the steel bars during the lifting process.

[0055] When hoisting containers filled with sand, gravel, building materials, etc., after lifting the container to a height of about 20 centimeters above the ground with the fixing bar 704, rotate the telescopic bar 702. The fixing bars 704 on the two telescopic bars 702 rotate to a position close to each other. At this time, rotate the bolt 710, and the bolt 710 presses against the fixing plate 709, which can fix the position of the telescopic bar 702 after rotation. Rotate the two rotating bars 705 to unfold the elastic cloth 703, so that the four rotating bars 705 are tied together in pairs with the binding rope 706. At this time, an inverted cone-shaped cover structure is formed between the two elastic cloths 703, which facilitates the hoisting of containers filled with sand, gravel, building materials, etc. The collection of materials spilled inside the cargo container improves the safety of hoisting containers filled with sand, gravel, building materials, etc. Because there is a 15°-30° angle between the rotating bar 705 and the fixing bar 704, the occurrence of crushed stone materials rolling off the edge of the elastic cloth 703 is reduced. By setting the elastic cloth 703 as an extendable structure, the flexibility of hoisting different products is improved, further enhancing the flexibility of using the protective device 7. The protective device 7 facilitates the collection of materials spilled during the hoisting of containers filled with sand, gravel, building materials, etc., not only avoiding material waste but also reducing the possibility of materials injuring buildings or personnel.

[0056] After rotating the support bar 87 on either of the circular columns 86 on the two fixing bars 704 to the center point of the two elastic cloths 703, the threaded part is pressed against the fixing bar 704, which temporarily fixes the elastic wheel 81 after rotation. At this time, twisting the rectangular ring 833 will cause the tightening rope 831 to twist, which can tighten the elastic wheel 81 and shorten the inner diameter of the elastic wheel 81. The collection bag 82 can then be inserted from the inside of the frustum cover 84, facilitating the quick connection between the collection bag 82 and the elastic wheel 81. When the collection bag 82 is fitted onto the protrusion 85, the rectangular ring 833 is released. At this time, the elastic wheel 81 will reset and insert the protrusion 85 into the collection bag 82, which facilitates the quick tightening and fixing of the collection bag 82. The folded structure of the collection bag 82 improves the collection efficiency of the shaken material. The material rolling off the elastic cloth 703 will be collected through the collection bag 82, which facilitates the centralized processing of the shaken material. By setting up the collection device 8, the centralized processing of the shaken material is facilitated, and the centralized processing efficiency of the shaken material is further improved.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An auxiliary hoisting device for bridge construction, comprising a base (1), characterized in that: A support frame (2) is rotatably installed on the upper surface of the base (1). A limit frame (3) is slidably installed on the upper side of the support frame (2). Three ropes (4) are evenly driven and installed on the inner wall of the limit frame (3). The lower ends of the three ropes (4) are fixedly installed with a positioning frame (6). A hoisting frame (9) is rotatably installed on the lower surface of the positioning frame (6). A limit device (5) is arranged on the surface of the hoisting frame (9). The limit device (5) includes a limit structure (51) for limiting the placement of steel bars, a driving structure (53) for driving the components in the limit structure (51) to move, a jacking structure (52) for conveniently pushing the steel bars out of the limit structure (51), and an anti-slip structure (54) for enhancing the pressing effect on the steel bars; The limit device (5) includes four first automatic telescopic rods (511). The four first automatic telescopic rods (511) are grouped in pairs and are fixedly connected to the side wall of the hoisting frame (9). The output ends of the two first automatic telescopic rods (511) are fixedly installed with a pressing block (512) in an inverted "one" character structure. A slider (514) is slidably installed inside the pressing block (512). A placing block (513) in a "V" shape structure is fixedly installed on the lower surface of the slider (514). A number of limiting grooves (515) with a cross-section in a "V" shape structure are evenly opened on the inner side of the placing block (513). The driving structure (53) includes a connecting block (535). The connecting block (535) is fixedly connected to the side wall of the pressing block (512). A positioning block (534) is fixedly installed on the side wall of the placing block (513). A screw rod (531) is rotatably installed inside the connecting block (535). The screw rod (531) is threadedly connected to the inside of the positioning block (534). A fixing frame (533) is fixedly installed on the side wall of the pressing block (512). A motor (532) is fixedly installed inside the fixing frame (533). The output end of the motor (532) is fixedly connected to the end face of the screw rod (531); A protection device (7) is arranged on the side wall of the hoisting frame (9). The protection device (7) includes two support plates (701). The two support plates (701) are both fixedly installed on the side wall of the hoisting frame (9). Telescopic rods (702) are rotatably installed on the lower surfaces of the two support plates (701). Fixing bars (704) are fixedly installed at the lower ends of the two telescopic rods (702). A fixing pin (707) is obliquely fixedly installed on the upper surface of the fixing bar (704). A rotating frame (708) is fixedly installed on the side wall of the fixing pin (707). Two rotating bars (705) are rotatably installed on the inner wall of the rotating frame (708). An elastic cloth (703) is fixedly installed on one side of the two rotating bars (705) close to each other. There is an included angle between 15° and 30° between the rotating bar (705) and the fixing bar (704);The surface of the fixing strip (704) is provided with a collecting device (8), the collecting device (8) includes a circular column (86), the circular column (86) is fixedly installed on the lower surface of the fixing strip (704), a support strip (87) is rotatably installed on the surface of the circular column (86), an elastic wheel (81) is fixedly installed on the side wall of the support strip (87), the elastic wheel (81) is formed by folding several elastic pieces, and a collecting bag (82) is covered on the surface of the elastic wheel (81), the collecting bag (82) has a stacked structure.

2. The auxiliary hoisting device for bridge construction according to claim 1, characterized in that: The jacking structure (52) includes a second automatic telescopic rod (521). The second automatic telescopic rod (521) is fixedly connected to the lower side of the placing block (513). A jacking block (522) with an inverted "T" - shaped cross - section is fixedly installed at the output end of the second automatic telescopic rod (521).

3. The auxiliary hoisting device for bridge construction according to claim 2, characterized in that: The anti - slip structure (54) includes an elastic pad (541). The elastic pad (541) is located outside the pressing block (512). A number of anti - slip strips (543) symmetrically distributed on both sides of the elastic pad (541) are adhesively bonded to the surface of the elastic pad (541). The cross - section of the anti - slip strip (543) is triangular. A number of trapezoid - shaped bumps (542) are adhesively bonded to the upper surface of the elastic pad (541). Installation grooves adapted to the bumps (542) are provided on the lower side of the pressing block (512).

4. The auxiliary hoisting device for bridge construction according to claim 3, characterized in that: A binding rope (706) is fixedly installed on the side wall of the rotating bar (705). A sphere is fixedly installed at the end face of the binding rope (706).

5. The auxiliary hoisting device for bridge construction according to claim 4, characterized in that: A bolt (710) is threaded through the inside of the support plate (701). A fixed disk (709) is fixedly installed on the upper side of the telescopic rod (702).

6. The auxiliary hoisting device for bridge construction according to claim 5, characterized in that: A number of convex thorns (85) are evenly fixedly installed on the side wall of the elastic wheel (81). A frustum - shaped cover (84) is fixedly installed at the lower end of the elastic wheel (81). A threaded part is threaded through the inside of the support bar (87).

7. The auxiliary hoisting device for bridge construction according to claim 6, characterized in that: A tightening structure (83) is provided on the side wall of the elastic wheel (81). The tightening structure (83) includes a number of limiting frames (834). A number of the limiting frames (834) are fixedly installed on the side wall of the elastic wheel (81). A frame (832) is fixedly installed on the side wall of the elastic wheel (81). A tightening rope (831) is sleeved between the elastic wheel (81) and the limiting frame (834). Rectangular rings (833) are fixedly connected to both end faces of the tightening rope (831).

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