Construction device and method for installing counterweight concrete based on large-span multi-box steel box beam

Abstract

The present invention discloses a construction device and method for installing counterweight concrete based on a large-span multi-box steel box girder, and the present invention relates to the technical field of building bridge construction. By connecting the locking mechanism with the large-span multi-box steel box girder through welding, a larger platform can be provided for the assembly process of the concrete counterweight block prefabricated part. During the assembly of the two, there is no need to accurately adjust the position between the concrete counterweight block prefabricated part and the locking mechanism, thereby achieving the fault tolerance of the assembly between the two, and avoiding the situation where the assembly cannot be performed due to a slight deviation in the position between the two; secondly, through the assembly linkage between the concrete counterweight block prefabricated part and the locking mechanism, after the concrete counterweight block prefabricated part is placed on the top of the locking mechanism, the self-locking action of the locking mechanism can be promoted by the concrete counterweight block prefabricated part's own gravity, and the assembly work between the concrete counterweight block prefabricated part and the locking mechanism is completed, which greatly shortens the assembly time.

Description

Technical Field

[0001] The present invention relates to the technical field of building bridge construction, and in particular to a construction device and method for installing counterweight concrete based on a large-span multi-box steel box girder. Background Art

[0002] Steel box girders can withstand greater pressure than traditional bridges of the same weight, making them particularly suitable for long-span bridges. Long-span multi-box steel box girders feature a steel beam structure with a large span and multiple box sections. These beams are constructed by fully welded connections of top plates, bottom plates, webs, transverse and longitudinal diaphragms, and stiffening ribs, forming one or more closed box structures.

[0003] The patent application with reference publication number CN114717951B discloses a construction device and construction method for installing counterweight concrete on a large-span multi-box steel box girder. By accurately placing the counterweight concrete into the steel box and fixing it, the problem of balancing the space inside the box is solved. The positioning plate structure, the transport assembly structure, the clamping mechanism and the tightening structure are designed and utilized in sequence. The degree of automation is high, time-saving and labor-saving. All operations are performed in a row, saving time and labor. Long screws and welded bases are designed to fix the counterweight concrete blocks on the long screws, thereby achieving a fixing effect, solving the problem of displacement after long-term use, and facilitating subsequent disassembly. The installed spring ribs play a role of tightening and buffering to protect the connection. The entire method is simple in design and easy to operate. It meets the actual use standards, reduces production costs, improves work efficiency, and has a better effect than traditional methods.

[0004] A comprehensive analysis of the above patents reveals the following defects:

[0005] The threaded sleeve at the bottom of the counterweight concrete block in the above patent application is required to be aligned and connected with the long screw welded to the bottom surface of the steel box girder. However, the facing area of ​​the long screw and the threaded sleeve is small, and the two need to be accurately positioned during assembly. However, vibration is inevitable during the operation of large-scale equipment, which can easily cause the position of the counterweight concrete block to deviate from the long screw, making it difficult to quickly achieve the connection between the counterweight concrete block and the long screw. The installation accuracy is high, which increases the difficulty of assembling the counterweight concrete block. Therefore, the present invention proposes a construction device and method for installing counterweight concrete based on large-span multi-box steel box girders to solve the above problems. Summary of the Invention

[0006] In response to the deficiencies in the prior art, the present invention provides a construction device and method for installing counterweight concrete based on large-span multi-box steel box girders, which solves the current requirement for the threaded sleeve at the bottom of the counterweight concrete block to be aligned and connected with the long screw welded to the bottom surface of the steel box girder. The facing area of ​​the long screw and the threaded sleeve is small, and the two need to be precisely positioned during assembly. Due to the inevitable vibration during the operation of large-scale equipment, the position of the counterweight concrete block relative to the long screw may easily deviate, making it difficult to quickly achieve the connection between the counterweight concrete block and the long screw. The installation accuracy is relatively high, thereby increasing the difficulty of assembling the counterweight concrete block.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a construction device for installing counterweight concrete based on a large-span multi-box steel box girder, comprising:

[0008] Heavy-load AGVs are used to provide a support platform for the installation of counterweight concrete for large-span multi-box steel box girders;

[0009] Feeding mechanism 1, which is set on one side of the top of the heavy-load AGV, and has a prefabricated concrete counterweight block to be installed on its top;

[0010] Feeding mechanism 2 is arranged on the top of the heavy-duty AGV at a side away from feeding mechanism 1, and a locking mechanism is provided on the top of the heavy-duty AGV for locking the prefabricated concrete counterweight block to the bottom of the belly of the large-span multi-box steel box girder;

[0011] The assembly mechanism is arranged above the heavy-load AGV and is used to install the locking mechanism at the bottom of the belly of the large-span multi-box steel box girder and install the concrete counterweight prefabricated part on the top of the locking mechanism to complete the assembly of the locking mechanism, the concrete counterweight prefabricated part and the large-span multi-box steel box girder;

[0012] The position control assembly is arranged above the heavy-load AGV and is used to provide power for the assembly mechanism to assemble the locking mechanism and the concrete counterweight block prefabricated parts.

[0013] Furthermore, multiple moving wheels are provided on both sides of the bottom of the heavy-load AGV for lifting the heavy-load AGV to change the construction position. The moving wheels are driven by a motor, and the multiple moving wheels are driven by chains. A controller for controlling the operation of the moving wheels is fixed on the side wall of the heavy-load AGV.

[0014] Furthermore, the position control component includes a linear module, a slide and two protective covers, and the two protective covers are respectively mounted on the outside of feeding mechanism 1 and feeding mechanism 2. The linear module and the slide are simultaneously arranged on the top of feeding mechanism 1 and feeding mechanism 2. The linear module is used to drive the assembly mechanism to move back and forth between feeding mechanism 1 and feeding mechanism 2. Touch switch unit 1 and touch switch unit 2 are respectively arranged on both sides of the top of the slide for controlling the assembly mechanism to execute the installation of the locking mechanism and the concrete counterweight block prefabricated parts.

[0015] Furthermore, the structures of the touch switch unit 1 and the touch switch unit 2 are exactly the same. The touch switch unit 1 includes a touch switch 1, a delay switch, a touch switch 2, a touch switch 3 and a touch switch 4 fixedly arranged on the top of the slide. The touch switch 1, the delay switch, the touch switch 2, the touch switch 3 and the touch switch 4 are arranged in an "I" shape on the top of the slide. The touch switch 3 and the touch switch 4 are fixedly arranged in the middle area of ​​the top of the slide. The touch switch 1 and the touch switch 2 in the touch switch unit 1 and the touch switch unit 2 are respectively used to control the displacement process of the assembly mechanism during the clamping process of the locking mechanism and the concrete counterweight block prefabricated part. The delay switch is used to control the clamping process of the assembly mechanism on the locking mechanism or the concrete counterweight block prefabricated part. The touch switch 3 is used to control the displacement process of the assembly mechanism during the release process of the locking mechanism. The touch switch 4 is used to control the displacement process of the assembly mechanism during the release process of the concrete counterweight block prefabricated part.

[0016] Furthermore, the structures of the feeding mechanism 1 and the feeding mechanism 2 are exactly the same, the feeding mechanism 1 includes a side panel 1 and a side panel 2 arranged opposite to each other on both sides, the bottom of the side panel 1 and the side panel 2 are fixedly provided with a lifting bracket for simultaneously lifting one end of the side panel 1 and the side panel 2, so that the overall height of the side panel 1 and the side panel 2 is higher than that of the other end, the top of the side panel 1 and the side panel 2 are fixedly provided with a baffle 1, and the one end of the side panel 1 and the side panel 2 are jointly fixed with a baffle 2, a plurality of rollers 1 are uniformly provided between the opposite side walls of the side panel 1 and the side panel 2, a plurality of rollers 2 are uniformly provided on the opposite side walls of the two baffles 1, and the distance between the side walls of the two rollers 2 at relative positions is adapted to the width of the locking mechanism.

[0017] Furthermore, the assembly mechanism includes a suspension arm and a sliding sleeve fixedly arranged at the bottom of the suspension arm, a trigger groove is provided at the middle position of the bottom of the sliding sleeve, which is used to smoothly contact with touch switch unit 1 and touch switch unit 2 and complete the triggering of touch switch unit 1 and touch switch unit 2, a lifting sleeve is fixedly provided at one end of the suspension arm, a sliding groove is provided on the side wall of the lifting sleeve, an electric push rod 1 is fixedly provided on the top of the lifting sleeve, and a clamping head assembly is provided inside the sliding groove.

[0018] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0019] Furthermore, the structures of the clamping arm unit 1 and the clamping arm unit 2 are the same. The clamping arm unit 1 includes a clamping plate and a rubber pad fixedly arranged on the side wall of the clamping plate relative to the clamping arm unit 2. The top of the clamping plate is fixedly provided with a clamping seat, and the top of the clamping seat is fixedly provided with a wedge block.

[0020] Furthermore, the locking mechanism includes a bearing seat and a welding seat fixedly arranged at the bottom of the bearing seat, the welding seat is used to be welded to the bottom of the belly cavity of a large-span multi-box steel box girder, and movable through grooves are provided on the front and rear sides of the top of the bearing seat, and a splint 1 and a splint 2 are respectively slidably provided inside the two movable through grooves and located on both sides of the top of the bearing seat, and the bottoms of the splint 1 and the splint 2 are fixedly provided with a screw sleeve, and a bidirectional screw rod is simultaneously threadedly provided inside the two screw sleeves. The bidirectional screw rod is rotatably arranged at the bottom of the bearing seat through the installation hanger, and square through grooves are provided on the opposite side walls of the splint 1 and the splint 2, one end of the bidirectional screw rod is fixedly provided with a gear, and a lifting power assembly is slidably provided inside the two square through grooves;

[0021] The lifting power assembly includes a pressure plate that is simultaneously slidably arranged in two square through grooves, and a plurality of lifting rods are arranged at the bottom of the pressure plate. Each of the lifting rods slides through the bearing seat and extends to the outside. A spring 2 is provided on the outer wall of the lifting rod and is located between the pressure plate and the bearing seat. A rack is fixedly arranged on the side wall of the pressure plate, and the rack slides through the bearing seat and is meshed with a gear.

[0022] The present invention also discloses a construction method for installing a counterweight concrete construction device based on a large-span multi-box steel box girder, the method comprising the following steps:

[0023] Step 1: First, place the locking mechanism and concrete counterweight prefabricated parts to be assembled on one side of the higher position of the top of the feeding mechanism 2 and the feeding mechanism 1 respectively. The locking mechanism and the concrete counterweight prefabricated parts use their own gravity and the inclined design characteristics of the feeding mechanism 2 and the feeding mechanism 1 to slide from the higher position of the top of the feeding mechanism 2 and the feeding mechanism 1 to the lowest position, completing the preparation for the counterweight installation of the large-span multi-box steel box girder;

[0024] Step 2: Start the position control component to drive the assembly mechanism to the top of the feeding mechanism 2 first, and clamp the locking mechanism at the lowest position on the top of the feeding mechanism 2, and place the clamped locking mechanism stably on the bottom of the belly cavity of the large-span multi-box steel box girder, and weld the locking mechanism and the bottom of the belly cavity of the large-span multi-box steel box girder. Then, the position control component drives the assembly mechanism to move to the top of the feeding mechanism 1, and then clamps the concrete counterweight block prefabricated part at the lowest point on the top of the feeding mechanism 1, and moves the concrete counterweight block prefabricated part to the top of the locking mechanism and then gradually moves downward. After reaching the preset position, the concrete counterweight block prefabricated part is stably placed on the top of the locking mechanism. The locking mechanism automatically completes the locking of the concrete counterweight block prefabricated part, and the counterweight installation process of the large-span multi-box steel box girder is completed.

[0025] Step 3: After a concrete counterweight prefabricated part is installed at one of the counterweight positions, the staff sends a displacement control instruction to the heavy-duty AGV to control it to move a fixed distance behind the position where the concrete counterweight prefabricated part has been installed, and then install the next concrete counterweight prefabricated part.

[0026] The present invention provides a construction device and method for installing counterweight concrete on a large-span multi-box steel box girder. Compared with the existing technology, it has the following advantages:

[0027] 1. A construction device and method for installing counterweight concrete on a large-span multi-box steel box girder. A locking mechanism is connected to the large-span multi-box steel box girder by welding, providing a large platform for the assembly process of the concrete counterweight prefabricated member. During assembly, there is no need to precisely adjust the position of the concrete counterweight prefabricated member and the locking mechanism, thereby achieving a high degree of assembly tolerance and avoiding the situation where assembly failure occurs due to a slight positional deviation between the two. Secondly, through the assembly linkage between the concrete counterweight prefabricated member and the locking mechanism, after the concrete counterweight prefabricated member is placed on top of the locking mechanism, the self-weight of the concrete counterweight prefabricated member can be used to activate the self-locking action of the locking mechanism, completing the assembly work between the concrete counterweight prefabricated member and the locking mechanism, thereby greatly shortening the assembly time. Furthermore, by lifting the concrete counterweight prefabricated member upward, the clamping action of the locking mechanism can be gradually released, allowing the locking mechanism and the concrete counterweight prefabricated member to be quickly separated, facilitating the recycling of the locking mechanism and the concrete counterweight prefabricated member, thereby saving assembly costs.

[0028] 2. A construction device and method for installing counterweight concrete on a large-span multi-box steel box girder. By setting a touch switch unit 1, a touch switch unit 2 and an assembly mechanism, the movement process of the assembly mechanism can be used to automatically trigger the touch switch unit 1 or the touch switch unit 2, thereby achieving the purpose of automatically controlling the assembly mechanism to clamp and assemble the concrete counterweight block prefabricated part or the locking mechanism. The locking mechanism can also be stably placed at the bottom of the belly cavity of the large-span multi-box steel box girder, and the concrete counterweight block prefabricated part and the locking mechanism can be automatically assembled. The assembly operation has a high degree of automation, does not require excessive human intervention, and saves labor expenditure costs.

[0029] 3. A construction device and method for installing counterweight concrete based on a large-span multi-box steel box girder. By setting a feeding mechanism one and a feeding mechanism two, the inclined design of the top of the feeding mechanism one and the feeding mechanism two can be utilized so that one of the concrete counterweight block prefabricated parts and the locking mechanism placed on the top of the two can always be at the lowest point position, and after the previous concrete counterweight block prefabricated part or the locking mechanism is installed, the next concrete counterweight block prefabricated part or the locking mechanism can be replaced at the lowest point position on the top of the feeding mechanism one or the feeding mechanism two, thereby achieving the effect of automatic feeding of the counterweight assembly construction, thereby laying the foundation for the continuous assembly of the concrete counterweight block prefabricated parts, enabling the counterweight assembly construction to be carried out continuously, and improving the efficiency of the counterweight assembly construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0031] Figure 2 For the present invention Figure 1A schematic diagram of the enlarged structure of part A;

[0032] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure of part B in FIG;

[0033] Figure 4 This is a structural diagram of a feeding mechanism of the present invention;

[0034] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure of part C;

[0035] Figure 6 This is a schematic structural diagram of the assembly mechanism of the present invention in the first state;

[0036] Figure 7 This is a schematic structural diagram of the second state of the assembly mechanism of the present invention;

[0037] Figure 8 This is a schematic diagram of the assembly mechanism of the present invention in an exploded state;

[0038] Figure 9 This is a schematic structural diagram of the locking mechanism of the present invention in the first state;

[0039] Figure 10 This is a schematic structural diagram of the locking mechanism of the present invention in the second state;

[0040] Figure 11 For the present invention Figure 10 The enlarged structural diagram of part D in FIG.

[0041] Figure 12 This is a schematic diagram of the assembly structure of the slide, touch switch unit 1, and touch switch unit 2 of the present invention.

[0042] Figure: 1. Heavy-duty AGV; 2. Controller; 3. Feeding mechanism 1; 31. Side panel 1; 32. Side panel 2; 33. Lifting bracket; 34. Baffle 1; 35. Baffle 2; 36. Roller 1; 37. Roller 2; 4. Feeding mechanism 2; 5. Protective cover; 6. Linear module; 7. Slide; 8. Assembly mechanism; 81. Hanging arm; 82. Sliding sleeve; 83. Trigger slot; 84. Lifting sleeve; 85. Slide; 86. Electric push rod 1; 87. Sliding block; 88. Lifting plate; 89. Electric push rod 2; 810. Hanging bracket; 811. Horizontal plate; 812. Adjustment slot; 813. Guide rod; 81 4. Clamping arm unit one; 8141. Clamping plate; 8142. Clamping seat; 8143. Wedge block; 815. Clamping arm unit two; 816. Spring; 817. Drive sleeve; 9. Locking mechanism; 91. Bearing seat; 92. Welding seat; 93. Movable through slot; 94. Clamping plate one; 95. Clamping plate two; 96. Pressure plate; 97. Lifting rod; 98. Spring two; 99. Rack; 910. Bidirectional screw; 911. Gear; 10. Concrete counterweight prefabricated part; 11. Touch switch one; 12. Delay switch; 13. Touch switch two; 14. Touch switch three; 15. Touch switch four. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] like Figures 1 to 12 The present invention provides three technical solutions: a construction device for installing counterweight concrete based on a large-span multi-box steel box girder, specifically including the following embodiments:

[0045] Example 1: A construction device for installing counterweight concrete based on a large-span multi-box steel box girder, comprising:

[0046] Heavy-load AGV1 is used to provide a support platform for the installation of counterweight concrete for large-span multi-box steel box girders;

[0047] The feeding mechanism 1-3 is arranged on one side of the top of the heavy-load AGV 1, and a prefabricated concrete counterweight block 10 to be installed is arranged on the top of the feeding mechanism 1-3. The prefabricated concrete counterweight block 10 is kept at the lower side of the top of the feeding mechanism 1-3 by utilizing the component of its own weight.

[0048] Feeding mechanism 2 4 is arranged on the top of the heavy-load AGV 1 on a side away from feeding mechanism 1 3, and is provided with a locking mechanism 9 on its top. By utilizing its own weight, the locking mechanism 9 slides from the higher side to the lower side of the feeding mechanism 2 4, so that the locking mechanism 9 is always retained at the lower side of the top of the feeding mechanism 2 4. The locking mechanism 9 is used to lock the concrete counterweight block prefabricated part 10 to the bottom of the belly cavity of the long-span multi-box steel box girder;

[0049] The assembly mechanism 8 is arranged above the heavy-load AGV 1 and is used to install the locking mechanism 9 at the bottom of the belly of the large-span multi-box steel box girder, and to install the concrete counterweight block prefabricated part 10 on the top of the locking mechanism 9, thereby completing the assembly of the locking mechanism 9, the concrete counterweight block prefabricated part 10 and the large-span multi-box steel box girder; after the concrete counterweight block prefabricated part 10 and the locking mechanism 9 are placed at the lowest point on the feeding mechanism 1 3 and the feeding mechanism 2 4, the height of the concrete counterweight block prefabricated part 10 and the top of the locking mechanism 9 are the same. The same, and the distance between the clamping plate 1 94 and the clamping plate 2 95 is slightly larger than the width of the concrete counterweight block prefabricated part 10, the thickness of the clamping plate 1 94 and the clamping plate 2 95 is relatively thin, and the rubber pads on the opposite side walls of the clamping arm unit 1 814 and the clamping arm unit 2 815 are relatively thick, and elastic deformation within a certain range can occur, so that the distance between the clamping arm unit 1 814 and the clamping arm unit 2 815 can meet the clamping of the locking mechanism 9 and can also meet the stable clamping of the concrete counterweight block prefabricated part 10.

[0050] The position control assembly is arranged above the heavy-load AGV 1 and is used to provide power for the assembly mechanism 8 to assemble the locking mechanism 9 and the concrete counterweight block prefabricated part 10.

[0051] The heavy-duty AGV 1 is equipped with multiple moving wheels on both sides of its bottom, used to lift the heavy-duty AGV 1 and change its construction location. These wheels are driven by a motor and connected by a chain. A controller 2, which controls the operation of the moving wheels, is fixed to the side wall of the heavy-duty AGV 1. Controller 2 receives control signals and controls the direction and distance of movement of the moving wheels based on these signals. A linear module is a mechanical device that converts rotational motion into linear motion, used to precisely control and position an object along a straight line. Specifically, it includes guide rails, sliding components, screws, and a drive motor. Since the linear module is a known technology, its operation will not be described in detail here.

[0052] The position control assembly includes a linear module 6, a slide 7, and two protective covers 5. The two protective covers 5 are respectively mounted on the exterior of feed mechanism 1 3 and feed mechanism 2 4. The linear module 6 and slide 7 are mounted on top of both feed mechanisms 1 3 and 2 4. The linear module 6 drives the assembly mechanism 8 back and forth between feed mechanisms 1 3 and 2 4. Touch switch units 1 and 2 are mounted on either side of the top of the slide 7, respectively, to control the assembly mechanism 8 in installing the locking mechanism 9 and the prefabricated concrete counterweight 10. The protective covers 5 are removably mounted on the top of the heavy-duty AGV 1 using bolts.

[0053] The structures of the touch switch unit 1 and the touch switch unit 2 are exactly the same. The touch switch unit 1 includes a touch switch 11, a delay switch 12, a touch switch 2 13, a touch switch 3 14 and a touch switch 4 15 fixedly arranged on the top of the slide 7. The touch switch 11, the delay switch 12, the touch switch 2 13, the touch switch 3 14 and the touch switch 4 15 are arranged in a "one" shape on the top of the slide 7. The touch switch 3 14 and the touch switch 4 15 are fixedly arranged in the middle area of ​​the top of the slide 7. Touch switch one 11 and touch switch two 13 in the touch switch unit one and touch switch two are respectively used to control the displacement process of the assembly mechanism 8 during the clamping process of the locking mechanism 9 and the concrete counterweight block prefabricated part 10, the delay switch 12 is used to control the clamping process of the assembly mechanism 8 to the locking mechanism 9 or the concrete counterweight block prefabricated part 10, the touch switch three 14 is used to control the displacement process of the assembly mechanism 8 during the release process of the locking mechanism 9, and the touch switch four 15 is used to control the displacement process of the assembly mechanism 8 during the release process of the concrete counterweight block prefabricated part 10.When the touch switch 11, the delay switch 12 and the touch switch 2 13 in the touch switch unit 1 are triggered successively for the first time, the touch switch 11 is used to control the electric push rod 1 86 to drive the slider 87 to move downward along the inner wall of the slide groove 85 to complete the purpose of approaching the locking mechanism 9, and the delay switch 12 is used to control the electric push rod 2 89 to drive the clamping arm unit 1 814 and the clamping arm unit 2 815 to complete the action of clamping the locking mechanism 9. The rubber pad on the side wall of the clamping plate 8141 is used to protect the clamped object during clamping. At the same time, the rubber pad has the characteristic of elastic deformation within a certain range, so that it can clamp objects with a certain width difference. The object, that is, the locking mechanism 9 and the concrete counterweight block prefabricated part 10 can be stably clamped under the same driving force of the electric push rod 2 89, and the touch switch 2 13 is used to drive the slider 87 to move down a preset distance again, so that the clamping arm unit 1 814 and the clamping arm unit 2 815 cover the locking mechanism 9; the touch switch 3 14 is used to control the electric push rod 1 86 to drive the slider 87 to move down after the boom 81 is reset, and the clamped locking mechanism 9 is placed at the bottom of the belly cavity of the large-span multi-box steel box girder and stay there for a preset time. The delay switch 12 in the touch switch unit 1 is used to delay clamping and delayed release; the touch switch 11 and the touch switch 2 13 When triggered twice in succession, the electric push rod 1 86 pulls the slider 87 twice to restore to its original height position; the touch switch 3 14 controls the triggering of the electric push rod 1 86 for six seconds, and the six seconds are used for the clamping arm unit 1 814 and the clamping arm unit 2 815 to move the locking mechanism 9 to a position in contact with the bottom of the belly cavity of the large-span multi-box steel box girder. After six seconds, the control effect on the electric push rod 1 86 is released, and the electric push rod 1 86 pulls the slider 87 upward again to reset; similarly, the touch switch 1 11, the delay switch 12, the touch switch 2 13 and the touch switch 4 15 in the touch switch unit 2 clamp and release the concrete counterweight block prefabricated part 10. The operation process for the three touch switches 14 and 15 located on top of the locking mechanism 9 is identical. Touch switch 3 14 and touch switch 4 15 are common to touch switch unit 1 and touch switch unit 2. Touch switch 3 14 participates in the displacement process of touch switch unit 1 controlling the assembly mechanism 8 to release the locking mechanism 9, while touch switch 4 15 participates in the displacement process of touch switch unit 2 controlling the assembly mechanism 8 to release the prefabricated concrete counterweight 10. The only difference between touch switch 3 14 and touch switch 4 15 is that touch switch 4 15 controls the downward movement of slider 87 to a relatively small distance, allowing the bottom of the prefabricated concrete counterweight 10 to precisely contact the top of the pressure plate 96. The spacing between touch switch 3 14 and touch switch 4 15 is greater than the width of the sliding sleeve 82.

[0054] The structures of feeding mechanism 1 3 and feeding mechanism 2 4 are exactly the same. Feeding mechanism 1 3 includes side panel 1 31 and side panel 2 32 arranged opposite to each other on both sides. The bottom of side panel 1 31 and side panel 2 32 are fixedly provided with a lifting bracket 33, which is used to lift one end of side panel 1 31 and side panel 2 32 at the same time, so that the whole formed by side panel 1 31 and side panel 2 32 is formed in a state where one end is higher than the other end. Baffle 1 34 is fixedly provided on the top of side panel 1 31 and side panel 2 32, and baffle 2 35 is fixedly provided on one end of side panel 1 31 and side panel 2 32. Multiple rollers 1 36 are evenly rotated between the opposite side walls of side panel 1 31 and side panel 2 32, and multiple rollers 2 37 are evenly rotated on the opposite side walls of the two baffles 1 34. The distance between the side walls of the two rollers 2 37 in relative positions is adapted to the width of the locking mechanism 9. After the locking mechanism 9 is placed on top of roller one 36, it can use its own gravity to slide from a higher position of the multiple rollers 1 36 to a lower position, and roller two 37 can reduce the friction between the locking mechanism 9 and the side wall of baffle one 34. At the same time, it can also correct the sliding trajectory of the locking mechanism 9 to ensure that the locking mechanism 9 can be against the side wall of baffle two 35 when it slides to the lowest point. The lowest point position of the locking mechanism 9 can cooperate with the clamping operation of the assembly mechanism 8.

[0055] Embodiment 2: The main difference between this embodiment and embodiment 1 is that: based on the construction device for installing counterweight concrete on a large-span multi-box steel box girder, the assembly mechanism 8 includes a boom 81 and a sliding sleeve 82 fixedly arranged at the bottom of the boom 81, and a triggering groove 83 is provided at the middle position of the bottom of the sliding sleeve 82 for smoothly contacting the touch switch unit 1 and the touch switch unit 2 and completing the triggering of the touch switch unit 1 and the touch switch unit 2. A lifting sleeve 84 is fixedly provided at one end of the boom 81, and a sliding groove 85 is provided on the side wall of the lifting sleeve 84. An electric push rod 1 86 is fixedly provided at the top of the lifting sleeve 84, and a clamping head assembly is provided inside the sliding groove 85.

[0056] The clamping head assembly includes a slider 87 that is slidably arranged inside the slide groove 85, the output shaft of the electric push rod 1 86 slides through the slide groove 85 and is fixedly connected to the top of the slider 87, a lifting plate 88 is fixedly arranged on the side wall of the slider 87, an electric push rod 2 89 is fixedly arranged on the top of the lifting plate 88, and a cross plate 811 is fixedly arranged on the bottom of the lifting plate 88 through a hanger 810, and adjustment slots 812 are opened on both sides of the top of the cross plate 811, and a mounting seat is fixedly arranged at the middle position of the bottom of the cross plate 811, and guide rods 813 are fixedly arranged on the left and right opposite side walls of the mounting seat. The two adjustment slots 812 are fixedly arranged. A clamping arm unit 1 814 and a clamping arm unit 2 815 are slidingly arranged inside, and the clamping arm unit 1 814 and the clamping arm unit 2 815 are respectively slidably sleeved on the outer walls of the guide rods 813 on both sides. Springs 816 are slidably sleeved on the outer walls of the two guide rods 813 and respectively located between the mounting seat and the side walls of the clamping arm unit 1 814 and the clamping arm unit 2 815. The output shaft of the electric push rod 2 89 slides through the lifting plate 88 and the hanger 810 and is fixed with a drive sleeve 817, which is slidably sleeved on the outer walls of the clamping arm unit 1 814 and the clamping arm unit 2 815. The output shaft of the electric push rod 86 slides through the slide groove 85 and is fixedly set on the top of the slider 87; the side of the boom 81 away from the lifting sleeve 84 is fixedly connected to the sliding part on the top of the slide 7, and the slide 7 is used to drive the boom 81 to move back and forth. The slide sleeve 82 is slidably set on the outer wall of the assembly mechanism 8. The position of the trigger groove 83 is on the same straight line as the touch switch unit 1 and the touch switch unit 2. The through groove design of the trigger groove 83 can make it contact smoothly with the touch switch unit 1 and the touch switch unit 2, and complete the triggering of the touch switch unit 1 and the touch switch unit 2.

[0057] Clamping arm unit 1 814 and clamping arm unit 2 815 have the same structure. Clamping arm unit 1 814 includes a clamping plate 8141 and a rubber pad fixedly mounted on the side wall of clamping plate 8141 opposite clamping arm unit 2 815. A clamping seat 8142 is fixedly mounted on the top of clamping plate 8141, and a wedge block 8143 is fixedly mounted on the top of clamping seat 8142. The clamping seat 8142 is slidably mounted within the corresponding adjustment slot 812. The wedge block 8143 is slidably mounted within the interior of the drive sleeve 817. The left and right sidewalls of the drive sleeve 817 cavity are both inclined, the slope of which matches that of the wedge block 8143, and the inclined sidewalls of the wedge block 8143 abut against the inclined sidewalls of the drive sleeve 817 cavity.

[0058] Embodiment 3: The main difference between this embodiment and embodiment 2 is that: based on the construction device for installing counterweight concrete on a large-span multi-box steel box girder, the locking mechanism 9 includes a bearing seat 91 and a welding seat 92 fixedly arranged at the bottom of the bearing seat 91, and the welding seat 92 is used to be welded to the bottom of the belly cavity of the large-span multi-box steel box girder. The top of the bearing seat 91 is provided with movable through grooves 93 on both the front and rear sides. The inside of the two movable through grooves 93 and the two sides of the top of the bearing seat 91 are respectively provided with a splint 1 94 and a splint 2 95 that are slidably provided. The bottoms of the splint 1 94 and the splint 2 95 are fixedly provided with screw sleeves, and a bidirectional screw 910 is simultaneously threadedly provided inside the two screw sleeves. A bidirectional screw rod 910 is rotatably mounted on the bottom of the support seat 91 via a mounting bracket. Square through-slots are provided on the opposing sidewalls of both splint 1 94 and splint 2 95. A gear 911 is fixedly mounted on one end of the bidirectional screw rod 910, and a lifting power assembly is slidably mounted inside the two square through-slots. The bidirectional screw rod 910 has a central axis of symmetry, and symmetrically arranged threaded grooves with opposite rotation directions are located on its outer walls and on either side of the axis of symmetry. The screw rod sleeves at the bottoms of splint 1 94 and splint 2 95 are respectively threadedly mounted within the two threaded grooves of the bidirectional screw rod 910 with different rotation directions, thereby simultaneously controlling splint 1 94 and splint 2 95 to move closer to or further away from each other. A rubber protective plate is fixedly mounted between the opposing sidewalls of splint 1 94 and splint 2 95.

[0059] The lifting power assembly includes a pressure plate 96 that is simultaneously slidably arranged in two square through grooves. A plurality of lifting rods 97 are arranged at the bottom of the pressure plate 96. Each lifting rod 97 slides through the bearing seat 91 and extends to the outside. A spring 2 98 is provided on the outer wall of the lifting rod 97 and is located between the pressure plate 96 and the bearing seat 91. A rack 99 is fixedly arranged on the side wall of the pressure plate 96. The rack 99 slides through the bearing seat 91 and is meshed with the gear 911.

[0060] The present invention also provides a construction method for installing a counterweight concrete construction device based on a large-span multi-box steel box girder, the method comprising the following steps:

[0061] Step 1: First, place the locking mechanism 9 and the concrete counterweight block prefabricated part 10 to be assembled on one side of the higher position of the top of the feeding mechanism 2 4 and the feeding mechanism 1 3 respectively. The locking mechanism 9 and the concrete counterweight block prefabricated part 10 use their own gravity and the characteristics of the inclined design of the feeding mechanism 2 4 and the feeding mechanism 1 3 to slide from the higher position of the top of the feeding mechanism 2 4 and the feeding mechanism 1 3 to the lowest position, completing the preparation for the counterweight installation of the large-span multi-box steel box girder; the specific process is: first, place the cast concrete counterweight block prefabricated part 10 from Multiple concrete counterweight blocks 10 are placed in sequence at the highest position on the top of the feeding mechanism 1 3. Since the width of the concrete counterweight block prefabricated piece 10 is adapted to the distance between the two opposite rollers 2 37 at the same position, and under the action of one component of the concrete counterweight block prefabricated piece 10's own weight, it slides toward the lowest point on the top of the feeding mechanism 1 3 until the concrete counterweight block prefabricated piece 10 slides to the lowest point and abuts against the inner wall of the baffle 2 35. Then, other concrete counterweight block prefabricated pieces 10 are placed in sequence until the number of placed concrete counterweight blocks reaches the preset installation number.

[0062] Next, multiple assembled locking mechanisms 9 are placed sequentially from the highest position on the top of the second feeding mechanism 4. Since the width of the locking mechanism 9 is adapted to the distance between the two opposing second rollers 37 at the same position, and under the action of one component of the weight of the locking mechanism 9 itself, the locking mechanism 9 slides toward the lowest point on the top of the second feeding mechanism 4 until the second feeding mechanism 4 slides to the lowest point and abuts against the inner wall of the second baffle 35. Then, other locking mechanisms 9 are placed sequentially until the number of locking mechanisms 9 placed is the same as the number of concrete counterweight prefabricated pieces 10.

[0063] Step 2, start the position control component to drive the assembly mechanism 8 to the top of the feeding mechanism 2 4 first, and clamp the locking mechanism 9 located at the lowest position on the top of the feeding mechanism 2 4, and place the clamped locking mechanism 9 steadily on the bottom of the belly of the large-span multi-box steel box girder, and weld the locking mechanism 9 and the bottom of the belly of the large-span multi-box steel box girder. Then, the position control component drives the assembly mechanism 8 to move to the top of the feeding mechanism 1 3, and then clamps the concrete counterweight block prefabricated part 10 located at the lowest point of the top of the feeding mechanism 1 3, and moves the concrete counterweight block prefabricated part 10 to the top of the locking mechanism 9 and then gradually moves downward. After reaching the preset position, the concrete counterweight block prefabricated part 10 is steadily placed on the locking mechanism 9. At the top of the fixed mechanism 9, the locking mechanism 9 automatically completes the locking of the concrete counterweight block prefabricated part 10, and the counterweight installation process of the large-span multi-box steel box girder is completed; the specific process is: the linear module 6 uses its internal drive motor to drive the screw to rotate. Since the sliding component thread sleeve is set on the outer wall of the screw, and the drive motor has been programmed and controlled, therefore, under the drive motor, the boom 81 first approaches the position of the feeding mechanism 2 4, and when the sliding sleeve 82 slides along the top of the slide seat 7, the trigger groove 83 first meets the touch switch 11 and slides over its top. The touch switch 11 is triggered, and the electric push rod 186 pushes the slider 87 downward at a uniform speed and moves downward along the inner wall of the slide groove 85 for the first displacement. During the downward movement, the trigger slot 83 slides over the top of the delay switch 12 and triggers it. The delay switch 12 delays the activation of the electric push rod 2 89. When the boom 81 moves to the top of the feeding mechanism 2 4, the first displacement movement of the slider 87 is just completed. At the same time, the touch switch 2 13 is triggered when the trigger slot 83 slides over it. The slider 87 starts to move downward along the inner wall of the slide slot 85 for the second displacement. At this time, the locking mechanism 9 is located between the opposite side walls of the clamping arm unit 1 814 and the clamping arm unit 2 815 and has covered the locking mechanism 9. At this time, the delay time of the delay switch 12 ends, and the control electric push rod 2 89 is activated. The output shaft of the electric push rod 2 89 pushes the drive downward. The movable sleeve 817 moves downward, and the inclined surfaces on both sides of the cavity of the driving sleeve 817 simultaneously push the inclined surfaces of the wedge block 8143 in the clamping arm unit 1 814 and the clamping arm unit 2 815. Therefore, the clamping arm unit 1 814 and the clamping arm unit 2 815 approach each other, and the second displacement of the slider 87 controlled by the touch switch 2 13 ends when the top part of the clamping plate 8141 is opposite to the top of the side wall of the locking mechanism 9. At this time, the clamping arm unit 1 814 and the clamping arm unit 2 815 continue to approach each other, and finally use the clamping plate 8141 part of the clamping arm unit 1 814 and the clamping arm unit 2 815 to clamp the locking mechanism 9. The clamping force control standard is that the rubber pad on the side wall of the clamping plate 8141 undergoes elastic deformation;

[0064] Then, the driving motor drives the screw rod to rotate in the reverse direction, and the boom 81 reaches the middle area position on the top of the heavy-load AGV1 and stops. During the resetting process of the assembly mechanism 8, the touch switch 1 11, the delay switch 12, and the touch switch 2 13 are triggered again. The touch switch 1 11 and the touch switch 2 13 reset the assembly mechanism 8 again through two-stage displacement, and the delay switch 12 delays the clamping and releasing control of the electric push rod 2 89. When the sliding sleeve 82 returns to the middle area position of the linear module 6, the touch switch 3 14 is triggered, and the electric push rod 1 86 continues to move downward. When the boom 81 is reset, the bottom of the locking mechanism 9 just contacts the bottom of the large-span multi-box steel box girder. At this time, the delay switch 12 delays the release of the electric push rod 2 89. The delayed control is started, and the output shaft of the electric push rod 2 89 pulls the drive sleeve 817 upward. The clamping arm unit 1 814 and the clamping arm unit 2 815 move away from each other under the elastic force of the spring 816 until they return to their original position. The clamping and releasing process of the locking mechanism 9 lasts for 2 seconds. After 2 seconds, the triggering control of the touch switch 3 14 is released, and the electric push rod 1 86 pulls the slider 87 upward again to reset it. It should be noted here that when the sliding sleeve 82 moves toward the feeding mechanism 2 4 and completes the clamping of the locking mechanism 9, the touch switch 3 14 will be triggered for the first time. In this triggering process, the downward and upward movement of the clamping arm unit 1 814 and the clamping arm unit 2 815 will not interfere with surrounding objects, that is, it ends before reaching the feeding mechanism 2 4.

[0065] Next, the driving motor controls the assembly mechanism 8 to approach the feeding mechanism 1 3 , triggering the control unit 2 to control the assembly mechanism 8 and complete the clamping and releasing process of the concrete counterweight block prefabricated member 10 . This process is the same as the process of clamping and releasing the locking mechanism 9 , with the only difference being that the touch switch 4 15 controls the slider 87 to move downward by a distance such that the bottom of the concrete counterweight block prefabricated member 10 just contacts the top of the pressure plate 96 , i.e., the distance the touch switch 4 15 controls the slider 87 to move downward by is less than the distance the touch switch 3 14 controls the slider 87 to move downward by.

[0066] After the concrete counterweight prefabricated part 10 is placed on the top of the pressure plate 96, the pressure plate 96 moves downward under the action of the gravity of the concrete counterweight prefabricated part 10, so that the rack 99 moves downward synchronously with the pressure plate 96, so that the rack 99 drives the gear 911 meshed with it to rotate. Since the two sides of the surface of the bidirectional screw rod 910 are provided with thread grooves with opposite rotation directions, the clamping plate 1 94 and the clamping plate 2 95 threadedly sleeved on both sides of the bidirectional screw rod 910 move toward each other, gradually approaching the concrete counterweight prefabricated part 10, until the concrete counterweight prefabricated part 10 is clamped between the opposite side walls of the clamping plate 1 94 and the clamping plate 2 95; it should be noted that It is clear that until the concrete counterweight block prefabricated part 10 is stably clamped, the bottom end of the rack 99 does not contact the inner wall of the welding seat 92; when the concrete counterweight block prefabricated part 10 needs to be removed, it is only necessary to lift the concrete counterweight block prefabricated part 10 upward, and the elastic force of the spring 2 98 pushes the pressure plate 96 upward. When the rack 99 moves upward synchronously, the gear 911 rotates in the opposite direction, so that the two-way screw rod 910 drives the clamping plate 1 94 and the clamping plate 2 95 away from each other, and the concrete counterweight block prefabricated part 10 is released. At this time, the welding seat 92 and the welding part at the bottom of the belly cavity of the large-span multi-box steel box girder can be melted, and the locking mechanism 9 can be recovered.

[0067] Step 3. After a concrete counterweight prefabricated part 10 is installed at one of the counterweight positions, the staff sends a displacement control instruction to the heavy-load AGV1 to control it to move a fixed distance behind the position where the concrete counterweight prefabricated part 10 has been installed, and then install the next concrete counterweight prefabricated part 10; the specific process is: by sending an instruction to the controller 2, the controller 2 controls the moving wheel to move a preset distance, so that the assembled multiple concrete counterweight prefabricated parts 10 are arranged at equal intervals.

[0068] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0069] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A construction device for installing counterweight concrete based on a large-span multi-box steel box girder, characterized in that: include: Heavy-load AGV is used to provide a support platform for the construction of large-span multi-box steel box girders to install counterweight concrete; A feeding mechanism 1, which is arranged on one side of the top of the heavy-duty AGV, and a prefabricated concrete counterweight block to be installed is arranged on the top of the feeding mechanism 1; The second feeding mechanism is arranged on the top of the heavy-duty AGV and away from the first feeding mechanism, and a locking mechanism is arranged on the top of the heavy-duty AGV, and the locking mechanism is used to lock the concrete counterweight block prefabricated part at the bottom of the belly of the large-span multi-box steel box girder; An assembly mechanism is arranged above the heavy-load AGV, and is used to install the locking mechanism at the bottom of the belly of the large-span multi-box steel box girder, and to install the concrete counterweight block prefabricated part on the top of the locking mechanism, so as to complete the assembly of the locking mechanism, the concrete counterweight block prefabricated part and the large-span multi-box steel box girder; A position control assembly is disposed above the heavy-load AGV and is used to provide power for the assembly mechanism to assemble the locking mechanism and the concrete counterweight block prefabricated member; The locking mechanism comprises a bearing seat and a welding seat fixedly arranged at the bottom of the bearing seat, the welding seat is used for welding with the bottom of the belly cavity of a large-span multi-box steel box girder, movable through grooves are provided on both the front and rear sides of the top of the bearing seat, and a clamping plate 1 and a clamping plate 2 are respectively slidably arranged inside the two movable through grooves and located on both sides of the top of the bearing seat, and screw rod sleeves are fixedly arranged at the bottom of the clamping plate 1 and the clamping plate 2, and a bidirectional screw rod is simultaneously threadedly arranged inside the two screw rod sleeves, and the bidirectional screw rod is rotatably arranged at the bottom of the bearing seat through the installation hanger, and square through grooves are provided on the opposite side walls of the clamping plate 1 and the clamping plate 2, one end of the bidirectional screw rod is fixedly provided with a gear, and a lifting power assembly is slidably arranged inside the two square through grooves; The lifting power assembly includes a pressure plate that is slidably arranged in two square through grooves at the same time. A plurality of lifting rods are arranged at the bottom of the pressure plate. Each of the lifting rods slides through the bearing seat and extends to the outside. A spring 2 is provided on the outer wall of the lifting rod and is located between the pressure plate and the bearing seat. A rack is fixedly arranged on the side wall of the pressure plate. The rack slides through the bearing seat and is meshed with a gear.

2. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 1 is characterized in that: Multiple moving wheels are arranged on both sides of the bottom of the heavy-load AGV for lifting the heavy-load AGV to change the construction position. The moving wheels are driven by a motor and the multiple moving wheels are driven by chains. A controller for controlling the operation of the moving wheels is fixedly arranged on the side wall of the heavy-load AGV.

3. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 1 is characterized in that: The position control component includes a linear module, a slide and two protective covers. The two protective covers are respectively mounted on the outside of the feeding mechanism 1 and the feeding mechanism 2. The linear module and the slide are simultaneously arranged on the top of the feeding mechanism 1 and the feeding mechanism 2. The linear module is used to drive the assembly mechanism to reciprocate between the feeding mechanism 1 and the feeding mechanism 2. The touch switch unit 1 and the touch switch unit 2 are respectively arranged on both sides of the top of the slide for controlling the assembly mechanism to execute the installation of the locking mechanism and the concrete counterweight block prefabricated parts.

4. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 3 is characterized in that: The structures of the touch switch unit 1 and the touch switch unit 2 are exactly the same. The touch switch unit 1 includes a touch switch 1, a delay switch, a touch switch 2, a touch switch 3 and a touch switch 4 fixedly arranged on the top of the slide. The touch switch 1, the delay switch, the touch switch 2, the touch switch 3 and the touch switch 4 are arranged in a "one" shape on the top of the slide. The touch switch 3 and the touch switch 4 are fixedly arranged in the middle area of ​​the top of the slide. The touch switch 1 and the touch switch 2 in the touch switch unit 1 and the touch switch unit 2 are respectively used to control the displacement process of the assembly mechanism during the clamping process of the locking mechanism and the concrete counterweight block prefabricated part. The delay switch is used to control the clamping process of the assembly mechanism on the locking mechanism or the concrete counterweight block prefabricated part. The touch switch 3 is used to control the displacement process of the assembly mechanism during the release process of the locking mechanism. The touch switch 4 is used to control the displacement process of the assembly mechanism during the release process of the concrete counterweight block prefabricated part.

5. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 1 is characterized in that: The structures of the feeding mechanism 1 and the feeding mechanism 2 are exactly the same. The feeding mechanism 1 includes a side panel 1 and a side panel 2 arranged opposite to each other on both sides. The bottom of the side panel 1 and the side panel 2 are fixedly provided with a lifting bracket for simultaneously lifting one end of the side panel 1 and the side panel 2, so that the height of one end of the whole formed by the side panel 1 and the side panel 2 is higher than that of the other end. The top of the side panel 1 and the side panel 2 are fixedly provided with a baffle 1, and the one end of the side panel 1 and the side panel 2 are jointly fixedly provided with a baffle 2. A plurality of rollers 1 are evenly rotated between the opposite side walls of the side panel 1 and the side panel 2, and a plurality of rollers 2 are evenly rotated on the opposite side walls of the two baffles 1, and the distance between the side walls of the two rollers 2 at relative positions is adapted to the width of the locking mechanism.

6. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 3 is characterized in that: The assembly mechanism includes a suspension arm and a sliding sleeve fixedly arranged at the bottom of the suspension arm, a trigger groove is provided at the middle position of the bottom of the sliding sleeve, which is used to smoothly contact with touch switch unit 1 and touch switch unit 2 and complete the triggering of touch switch unit 1 and touch switch unit 2, a lifting sleeve is fixedly arranged at one end of the suspension arm, a sliding groove is provided on the side wall of the lifting sleeve, an electric push rod 1 is fixedly arranged on the top of the lifting sleeve, and a clamping head assembly is arranged inside the sliding groove.

7. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 6 is characterized in that: The cam is provided with a plurality of push rods, each of which is provided with a plurality of push rods, and the push rods are provided with a plurality of push rods at the cam end.

8. The construction device for installing counterweight concrete based on a large-span multi-box steel box girder according to claim 7 is characterized in that: The structures of the clamping arm unit 1 and the clamping arm unit 2 are the same. The clamping arm unit 1 includes a clamping plate and a rubber pad fixedly arranged on the side wall of the clamping plate relative to the clamping arm unit 2. A clamping seat is fixedly arranged on the top of the clamping plate, and a wedge block is fixedly arranged on the top of the clamping seat.

9. A construction method for implementing the construction device for installing counterweight concrete based on a large-span multi-box steel box girder as described in any one of claims 1 to 8, characterized in that: The method comprises the following steps: Step 1: First, place the locking mechanism and concrete counterweight block prefabricated parts to be assembled on one side of the higher position of the top of the feeding mechanism 2 and the feeding mechanism 1 respectively; the locking mechanism and the concrete counterweight block prefabricated parts slide from the higher position of the top of the feeding mechanism 2 and the feeding mechanism 1 to the lowest position by using their own gravity and the characteristics of the inclined design of the feeding mechanism 2 and the feeding mechanism 1, thus completing the preparation for the counterweight installation of the large-span multi-box steel box girder; Step 2, start the position control component to drive the assembly mechanism to first reach the top of the feeding mechanism 2, and clamp the locking mechanism located at the lowest position on the top of the feeding mechanism 2, and stably place the clamped locking mechanism on the bottom of the belly of the large-span multi-box steel box girder, and weld the locking mechanism and the bottom of the belly of the large-span multi-box steel box girder. Then, the position control component drives the assembly mechanism to move to the top of the feeding mechanism 1, and then clamps the concrete counterweight block prefabricated part located at the lowest point on the top of the feeding mechanism 1, and moves the concrete counterweight block prefabricated part to the top of the locking mechanism and then gradually moves it down. After reaching the preset position, the concrete counterweight block prefabricated part is stably placed on the top of the locking mechanism, and the locking mechanism automatically completes the locking of the concrete counterweight block prefabricated part, and a counterweight installation process of the large-span multi-box steel box girder is completed; Step 3: After a concrete counterweight prefabricated part is installed at one of the counterweight positions, the staff sends a displacement control instruction to the heavy-duty AGV to control it to move a fixed distance behind the position where the concrete counterweight prefabricated part has been installed, and then install the next concrete counterweight prefabricated part.

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