Construction device of reinforced concrete superposed beam prefabricated bridge deck slab and application method of construction device

Abstract

The invention relates to a construction device of a steel-concrete composite beam prefabricated bridge deck slab and an application method of the construction device, and belongs to the technical field of bridge construction.The construction device of the steel-concrete composite beam prefabricated bridge deck slab comprises a lifting appliance arranged on a lifting mechanism, and the lifting appliance comprises a lifting rod and a plurality of lifting blocks arranged on the lifting rod in a sliding and penetrating mode; the hanging rod is used for stretching into a hanging hole reserved in a bridge deck, the multiple hanging blocks are arranged in the circumferential direction of the hanging rod, the sliding direction of the hanging blocks is perpendicular to the axis direction of the hanging rod, and the hanging blocks are used for being matched with annular limiting holes formed in the inner wall of the hanging hole in the bridge deck in a clamped mode. The lifting rod is provided with an adjusting assembly used for adjusting the lifting block to slide in the direction close to or away from the lifting rod. The method has the effect of reducing the construction cost.

Description

Technical Field

[0001] The present application relates to the technical field of bridge construction, and in particular to a construction device for a prefabricated bridge deck of a steel-concrete composite beam and an application method thereof. Background Art

[0002] In the construction of steel-concrete composite beams, reinforced concrete prefabricated bridge decks are widely used in China due to their advantages of low cost and high construction efficiency. When constructing prefabricated bridge decks, it is usually necessary to use transportation equipment to move and hoist the bridge decks.

[0003] In the related art, for example, a Chinese patent document with publication number CN111549684A discloses a construction device for a prefabricated bridge deck of a steel-concrete composite beam and an application method thereof, wherein the construction device includes a lifting frame, a pallet transporter and a track system, wherein a lifting mechanism is provided on the lifting frame, and a sling is provided on the lifting mechanism, and the lifting mechanism can lift and lower the sling. When in use, the prefabricated bridge deck is transported along the track system to the bottom of the sling of the lifting frame by the pallet transporter, and then the bridge deck is hoisted by the sling on the lifting mechanism, and then the pallet transporter moves back to continue transporting the bridge deck, and the lifting mechanism lowers the sling and the bridge deck, so that the bridge deck is laid at a preset position.

[0004] Regarding the above-mentioned related technologies, at present, the lifting of bridge decks is usually carried out by pre-embedding lifting rings on the bridge decks, and hanging the lifting rings with hooks on the lifting equipment to lift or lower the bridge decks; since multiple lifting rings need to be pre-embedded on each bridge deck, the construction cost is relatively high. Summary of the invention

[0005] In order to help reduce construction costs and to lift the bridge deck without pre-embedded lifting rings, the present application provides a construction device for prefabricated bridge decks made of steel-concrete composite beams and an application method thereof.

[0006] In the first aspect, the present application provides a construction device for a prefabricated steel-concrete composite beam bridge deck, which adopts the following technical solution: A construction device for prefabricated bridge decks of steel-concrete composite beams, including a hanger for being arranged on a lifting mechanism, the hanger including a hanger rod and a plurality of hanger blocks slidably inserted into the hanger rod, the hanger rod being used to extend into a hanger hole reserved in the bridge deck, a plurality of the hanger blocks being arranged along the circumference of the hanger rod, the sliding direction of the hanger blocks being perpendicular to the axial direction of the hanger rod, the hanger blocks being used to engage with annular limit holes formed on the inner wall of the hanger hole in the bridge deck, and the hanger rod being provided with an adjusting component for adjusting the hanger blocks to slide toward or away from the hanger rod.

[0007] Preferably, the adjustment assembly includes a push spring arranged in the suspension rod and a pulling member arranged on the suspension rod, the push spring is used to push the suspension block to slide in a direction away from the suspension rod, and the pulling member is used to pull the suspension block to slide in a direction close to the suspension rod.

[0008] Preferably, the pulling member includes a connecting rope arranged on the hanging block and a winch arranged on the hanging rod, the connecting rope is connected to a side of the hanging block close to the hanging rod, and an end of the connecting rope away from the hanging block slides out of the hanging rod and is wound around the winch.

[0009] Preferably, a limiting plate is slidingly provided on one side of the hanging block close to the hanging rod, the sliding direction of the limiting plate is parallel to the axial direction of the hanging rod, a limiting rack is provided inside the hanging rod, the limiting rack corresponds one-to-one to the limiting plate, the length direction of the limiting rack is parallel to the sliding direction of the corresponding hanging block, and a sliding member is provided on the hanging block, the sliding member is used to adjust the limiting plate to slide toward or away from the corresponding limiting rack.

[0010] Preferably, the sliding member includes a transmission rod slidably arranged on the hanging block and a pull rope arranged on the limiting plate, the sliding direction of the transmission rod is parallel to the sliding direction of the corresponding hanging block, the limiting plate is slidably connected with a slider via a spring, the sliding direction of the slider is parallel to the sliding direction of the limiting plate, a side of the slider close to the corresponding hanging block is an arc surface, and the side of the arc surface away from the corresponding limiting rack is inclined toward the direction away from the hanging block, one end of the transmission rod is used to abut against the inner wall of the annular limiting hole opened on the inner wall of the hanging hole on the bridge deck, and the other end is used to abut against the arc surface of the slider, the end of the pull rope away from the limiting plate is connected to the corresponding connecting rope, and when the pull rope is in a tensioned state, the end of the connecting rope close to the hanging block is in a relaxed state.

[0011] Preferably, a guide plate is provided inside the suspension rod, the cross-section of the guide plate is cross-shaped, the guide plate corresponds to the suspension block one-to-one, the suspension block is slidably connected to the guide plate, the upper surface of the guide plate is flush with the upper surface of the suspension block, and the lower surface of the guide plate is flush with the lower surface of the suspension block.

[0012] Preferably, adjacent sides of the hanging blocks close to each other are hinged with reinforcing plates, the hinge axis of the reinforcing plates is parallel to the axial direction of the hanging rod, and the two reinforcing plates between the adjacent hanging blocks are hinged to each other.

[0013] Preferably, the upper surface of the reinforcing plate is flush with the upper surface of the hanging block, and the lower surface of the reinforcing plate is flush with the lower surface of the hanging block.

[0014] Preferably, the hanger also includes a cross bar, the hanger is arranged on the cross bar, a tensioning screw is passed through the hanger, the tensioning screw passes through the cross bar, a tensioning plate is provided at one end of the tensioning screw, the tensioning plate abuts against the bottom wall of the hanger, a locking nut is screwed on the tensioning screw, and the locking nut abuts against the side of the cross bar away from the hanger.

[0015] In a second aspect, the present application provides an application method of a construction device for a prefabricated steel-concrete composite beam bridge deck, which adopts the following technical solution: An application method of the construction device of the steel-concrete composite beam prefabricated bridge deck comprises the following steps: Use a pallet truck to move the bridge deck to the bottom of the lifting device in the lifting frame, so that the suspension rod is aligned with the reserved lifting hole on the bridge deck; The lifting device is lowered by the lifting mechanism, so that the hanging rod is extended into the hanging hole reserved on the bridge deck, and the hanging block is aligned with the annular limit hole on the inner wall of the hanging hole of the bridge deck; Then, the adjusting assembly is used to adjust the hanging block to slide in a direction away from the hanging rod, and the hanging block extends into the annular limiting hole on the inner wall of the bridge deck hanging hole, so that the plurality of hanging blocks are engaged with the annular limiting holes on the inner wall of the bridge deck hanging hole; Then the lifting device is lifted by the lifting mechanism, and the bridge deck is lifted by engaging the lifting block with the annular limiting hole on the inner wall of the bridge deck lifting hole; Then the pallet truck moves back to continue transporting the bridge deck; Lower the sling and the bridge deck by means of a lifting mechanism, so that the bridge deck is lowered to the installation position; The lifting block is adjusted by adjusting the assembly to slide in the direction close to the hanger rod, so that the lifting block is disengaged from the annular limit hole on the inner wall of the lifting hole on the bridge deck, and then the lifting device is driven up by the lifting mechanism to complete the installation of a bridge deck.

[0016] In summary, this application includes the following beneficial technical effects: When in use, the bridge deck with reserved lifting holes and limiting holes is moved to the bottom of the sling on the lifting frame by a pallet truck, so that the sling rod is aligned with the lifting hole reserved on the bridge deck; then the sling is lowered by the lifting mechanism, so that the sling rod of the sling extends into the lifting hole reserved in the bridge deck, and the lifting block is aligned with the annular limiting hole reserved on the inner wall of the lifting hole of the bridge deck; then the lifting block is adjusted to slide in the direction away from the sling rod by the adjusting component, so that the lifting block extends into the annular limiting hole reserved on the inner wall of the lifting hole of the bridge deck and abuts against the inner wall of the annular limiting hole, so that multiple lifting blocks are snap-fitted with the annular limiting holes reserved on the inner wall of the lifting hole of the bridge deck; then the lifting block is lifted by the crane The lifting mechanism is used to lift the sling and the bridge deck, and the bridge deck is lifted by the contact between the lifting block and the upper and lower inner walls of the annular limit hole, and then the pallet truck moves back to continue transporting the bridge deck; the lifting mechanism is used to lower the sling and the bridge deck again, so that the bridge deck is lowered to the installation position; then the adjusting component is used to adjust the lifting block to slide in the direction close to the hanger rod, so that the lifting block is separated from the annular limit hole reserved on the inner wall of the bridge deck lifting hole, and then the lifting mechanism is used to drive the sling to rise, and the installation of a bridge deck is completed. Since there is no need to pre-embed multiple lifting rings on the bridge deck to lift the bridge deck, and the sling can be reused, it helps to reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0018] Figure 2 It is a partial structural sectional view of the sling in the embodiment of the present application.

[0019] Figure 3 It is a partial structural sectional view of the suspension rod in the embodiment of the present application.

[0020] Figure 4 yes Figure 3 Enlarged view of part A.

[0021] Figure 5 It is a schematic diagram of the overall structure of the hanging block in the embodiment of the present application.

[0022] Explanation of the accompanying drawings: 1. sling; 101. sling rod; 102. sling block; 103. cross bar; 2. push spring; 3. connecting rope; 4. winch; 5. guide plate; 6. reinforcement plate; 7. tensioning screw; 8. tensioning plate; 9. locking nut; 10. limit plate; 11. limit rack; 12. transmission rod; 13. pull rope; 14. slider; 15. installation groove. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 This application is described in further detail.

[0024] The present application embodiment discloses a construction device for prefabricated bridge decks of steel-concrete composite beams. Figure 1The construction device of the steel-concrete composite beam prefabricated bridge deck includes a hoist 1 for being arranged on a lifting mechanism. In the embodiment of the present application, two groups of hoists 1 are provided, and the two groups of hoists 1 are respectively used to lift the two ends of the bridge deck. In other embodiments, the number of hoists 1 can be set as needed. Among them, the lifting mechanism can drive the hoist 1 to rise or move down. The lifting mechanism belongs to the prior art and can specifically adopt one of the structures such as a cylinder, a hydraulic cylinder, an electric cylinder, etc., which is not limited here.

[0025] Reference Figure 1 and Figure 2 Specifically, the hanger 1 includes a cross bar 103, a hanger rod 101 and a hanger block 102. The length direction of the cross bar 103 is parallel to the laying direction of the bridge deck. The cross bar 103 is used to connect with the lifting mechanism. Two hangers 101 are symmetrically fixed along the center of the cross bar 103. The hanger rod 101 is arranged in the vertical direction. The cross section of the hanger rod 101 is circular. The hanger rod 101 is used to extend into the hanging hole reserved in the bridge deck; to facilitate the installation of the hanger block 102, the lower end of the hanger rod 101 is provided with a mounting groove 15, and the mounting groove 15 is provided along the circumference of the hanger rod 101. A plurality of hangers 102 are provided, and the plurality of hangers 102 are arranged in sequence along the circumference of the mounting groove 15. The hangers 102 slide through the mounting groove 15. In the mounting groove 15, the upper surface of the hanging block 102 abuts against the upper top wall of the mounting groove 15, and the lower surface of the hanging block 102 abuts against the lower top wall of the mounting groove 15, so that the hanging block 102 is not easy to shake up and down; the sliding direction of the hanging block 102 is perpendicular to the axial direction of the hanger 101, specifically, the hanging block 102 moves radially along the hanger 101; the side of the hanging block 102 away from the bottom wall of the mounting groove 15 is an arc surface, and the arc surface bulges outward in the direction away from the bottom wall of the mounting groove 15, and the hanging block 102 is used to engage with the annular limit hole opened on the inner wall of the hanging hole on the bridge deck, and an adjustment component for adjusting the hanging block 102 to slide in the direction close to or away from the hanger 101 is provided in the mounting groove 15.

[0026] When in use, the bridge deck with reserved lifting holes and limiting holes is moved to the bottom of the sling 1 on the lifting frame by a pallet truck, so that the suspension rod 101 is aligned with the suspension hole reserved on the bridge deck; then the sling 1 is lowered by the lifting mechanism, so that the suspension rod 101 of the sling 1 is extended into the lifting hole reserved in the bridge deck, and when the lower end of the suspension rod 101 abuts against the bottom wall of the suspension hole reserved on the bridge deck, the suspension block 102 is aligned with the annular limiting hole on the inner wall of the suspension hole of the bridge deck; then the suspension block 102 is adjusted by the adjustment component to slide in the direction away from the suspension rod 101, so that the suspension block 102 is extended into the annular limiting hole on the inner wall of the suspension hole of the bridge deck and abuts against the inner wall of the annular limiting hole, so that multiple suspension blocks 102 are snap-fitted with the annular limiting holes on the inner wall of the suspension hole of the bridge deck; then the lifting mechanism is lifted by the crane The lifting mechanism lifts the sling 1 and the bridge deck, and the bridge deck is lifted by the contact between the lifting block 102 and the upper and lower inner walls of the annular limit hole on the inner wall of the lifting hole of the bridge deck, and then the pallet truck moves back to continue transporting the bridge deck; the lifting mechanism lowers the sling 1 and the bridge deck again, and the bridge deck is lowered to the installation position; then the adjusting component adjusts the lifting block 102 to slide in the direction close to the suspension rod 101, so that the lifting block 102 is disengaged from the annular limit hole on the inner wall of the lifting hole on the bridge deck, and then the lifting mechanism drives the sling 1 to rise, and the installation of a bridge deck is completed. Since only lifting holes and limit holes need to be reserved on the bridge deck, there is no need to pre-embed multiple lifting rings on the bridge deck to lift the bridge deck, and the sling can be reused, which helps to reduce construction costs.

[0027] Reference Figure 2 and Figure 3 In order to facilitate the adjustment of the hanging block 102 to slide in the direction close to or away from the hanging rod 101, the adjustment component includes a pushing spring 2 and a pulling member. The pushing spring 2 corresponds to the hanging block 102 one by one. The pushing spring 2 is located in the mounting groove 15. The extending direction of the pushing spring 2 is parallel to the sliding direction of the corresponding hanging block 102. One end of the pushing spring 2 is fixed to the bottom wall of the mounting groove 15, and the other end is fixed to the side of the corresponding hanging block 102 close to the bottom wall of the mounting groove 15. The pushing spring 2 is used to push the hanging block 102 to slide in the direction away from the hanging rod 101; the pulling member is arranged on the hanging rod 101, and the pulling member is used to pull the hanging block 102 to slide in the direction close to the hanging rod 101.

[0028] Reference Figure 2 and Figure 3 In order to facilitate the pulling of the suspension block 102 to slide in the direction close to the suspension rod 101, the pulling member includes a connecting rope 3 and a winch 4. The connecting rope 3 corresponds to the suspension block 102 one by one. One end of the connecting rope 3 is fixed to the side of the corresponding suspension block 102 close to the push spring 2, and the other end slides through the bottom wall of the mounting groove 15 and extends to the outside of the suspension rod 101. The winch 4 is fixedly installed on the outer wall of the suspension rod 101 close to one end of the cross bar 103. In the embodiment of the present application, two winches 4 are symmetrically arranged, and the end of the connecting rope 3 located outside the suspension rod 101 is wound around the winch 4 close to one side, and the winding direction is the same.

[0029] When it is necessary to adjust the suspension block 102 to move in a direction away from the suspension rod 101, start the winch 4 at the upper end of the suspension rod 101, and the winch 4 rotates to unwind the corresponding connecting rope 3, so that the tension of the connecting rope 3 on the suspension block 102 is reduced, and the corresponding suspension block 102 can be pushed to move in a direction away from the suspension rod 101 by the compressed push spring 2, so that the suspension block 102 can be engaged with the annular limiting hole on the inner wall of the suspension hole on the bridge deck. Unwinding and reeling the connecting rope 3 by the winch 4 helps to adjust and lock the length of the connecting rope 3, and can ensure that the suspension block 102 will not be separated from the suspension rod 101. When it is necessary to adjust the hanging block 102 to move toward the direction close to the hanging rod 101, start the winch 4 at the upper end of the hanging rod 101, and the winch 4 rotates to reel in the corresponding connecting rope 3, so that the connecting rope 3 pulls the corresponding hanging block 102, and the hanging block 102 moves toward the direction close to the bottom wall of the installation groove 15, thereby compressing the push spring 2, which helps to achieve the separation of the hanging block 102 from the annular limit hole on the bridge deck.

[0030] Reference Figure 3 and Figure 4 A limit plate 10 is provided on the upper end of the lifting block 102 near the push spring 2. The sliding direction of the limit plate 10 is parallel to the axial direction of the lifting rod 101. A slider 14 is slidably connected to the lower part of the limit plate 10 through a spring (not shown in the figure). The sliding direction of the slider 14 is parallel to the sliding direction of the corresponding limit plate 10. The extension direction of the spring is parallel to the sliding direction of the limit plate 10. The elastic force of the spring is greater than the gravity of the limit plate 10. The limit plate 10 and the slider 14 are slidably matched with the guide rail (not shown in the figure) on the corresponding lifting block 102, so that the limit plate 10 and the slider 14 will not be separated from the corresponding lifting block 102. A limit rack 11 is embedded in the top wall of the installation groove 15. The limit rack 11 corresponds to the limit plate 10 one by one. The length direction of the limit rack 11 is parallel to the sliding direction of the corresponding lifting block 102. A sliding member is provided on the lifting block 102. The sliding member is used to adjust the limit plate 10 to slide in the direction close to or away from the corresponding limit rack 11.

[0031] Reference Figure 3 and Figure 4In order to facilitate the adjustment of the limit plate 10 to slide in the direction close to or away from the corresponding limit rack 11, the sliding member includes a transmission rod 12 and a pull rope 13. The transmission rod 12 corresponds to the hanging block 102 one by one. The transmission rod 12 is slidably arranged on the corresponding hanging block 102. The sliding direction of the transmission rod 12 is parallel to the sliding direction of the hanging block 102. A rubber anti-skid pad (not shown in the figure) is bonded in the hanging block 102. The rubber anti-skid pad abuts against the transmission rod 12, so that the transmission rod 12 is not prone to unnecessary sliding when no force is applied; the side of the slider 14 close to the corresponding hanging block 102 is an arc surface, and the arc surface is away from the corresponding limit tooth One side of the strip 11 is inclined in the direction away from the hanger block 102, one end of the transmission rod 12 is used to abut against the inner wall of the annular limiting hole opened on the inner wall of the hanging hole reserved on the bridge deck, and the other end is used to abut against the arc surface of the slider 14; the pull rope 13 corresponds one-to-one to the limiting plate 10, one end of the pull rope 13 is fixed on the corresponding limiting plate 10, and the other end is connected to the corresponding connecting rope 3, wherein there is a certain distance from the connection position of the pull rope 13 and the corresponding connecting rope 3 to the end of the connecting rope 3 connected to the corresponding hanger block 102, and when the pull rope 13 is in a tensioned state, the end of the connecting rope 3 close to the hanger block 102 is in a relaxed state.

[0032] Reference Figure 3 In order to facilitate the extension of the suspension rod 101 into or out of the suspension hole on the bridge deck, when the suspension rod 101 is in the initial state, the end of the transmission rod 12 away from the limiting plate 10 is flush with the outer wall of the suspension rod 101, so that the suspension rod 101 can be adapted to the suspension hole on the bridge deck, and the bridge deck is not easy to shake during the lifting process. The length of the transmission rod 12 is less than the distance from the side of the slider 14 away from the corresponding suspension block 102 to the side of the corresponding suspension block 102 away from the bottom wall of the installation groove 15, so that the transmission rod 12 will not extend out of the side of the slider 14 away from the corresponding suspension block 102.

[0033] When the suspension rod 101 extends into the suspension hole on the bridge deck, so that the suspension block 102 is aligned with the annular limiting hole on the inner wall of the suspension hole on the bridge deck, the suspension block 102 is driven to move in the direction away from the installation groove 15. At this time, the transmission rod 12 is disengaged from the corresponding limiting piece 10, and the limiting piece 10 and the slider 14 are disengaged from the corresponding limiting rack 11 under the action of gravity. Then the suspension block 102 drives the transmission rod 12 to lean against the annular limiting hole on the inner wall of the suspension hole on the bridge deck, and the end of the transmission rod 12 away from the limiting piece 10 abuts against the inner wall of the annular limiting hole on the inner wall of the suspension hole on the bridge deck, and then pushes the spring 2 Continue to push the hanging block 102 to move, and slide the abutment transmission rod 12 toward the direction close to the hanging block 102, so that the transmission rod 12 and the arc surface on the corresponding slider 14 slide relative to each other, and push the corresponding slider 14 to move up. Since the pull rope 13 is in a relaxed state, the limit plate 10 is not subjected to any resistance, so that the limit plate 10 is engaged with the corresponding limit rack 11. At this time, the connecting rope 3 and the pull rope 13 are both in a relaxed state; thereby limiting the position of the hanging block 102, so that during the installation of the bridge deck, the bridge deck is not easily affected by the wind and produces uneven abutment with multiple hanging blocks 102, causing shaking.

[0034] When the hanging block 102 is driven to move toward the direction close to the installation groove 15, since the pull rope 13 is tensioned before the end of the connecting rope 3 close to the hanging block 102, the winding of the connecting rope 3 will first pull the pull rope 13 to make the limit plate 10 away from the corresponding limit rack 11. Since the slider 14 cannot move downward under the abutment of the transmission rod 12, the limit plate 10 compresses the spring between the limit plate 10 and the slider 14, thereby disengaging the limit plate 10 from the corresponding limit rack 11. Then the connecting rope 3 continues to pull the hanging block 102 close to the installation groove 15. Since the transmission rod 12 no longer abuts against the inner wall of the limit hole of the hanging hole on the bridge deck at this time, the spring between the limit plate 10 and the slider 14 pushes the slider 14 to move downward. The slider 14 can push the transmission rod 12 to move a certain distance in the direction away from the corresponding limit plate 10 and then achieve reset, so as to remove the hanging rod 101 from the hanging hole of the bridge deck.

[0035] Reference Figure 3 and Figure 5 A guide plate 5 is fixed in the mounting groove 15, and the guide plate 5 corresponds to the hanging block 102 one by one. The cross section of the guide plate 5 is a cross. The guide plate 5 extends along the sliding direction of the corresponding hanging block 102, and the hanging block 102 is slidably connected to the guide plate 5. Specifically, the hanging block 102 is slidably sleeved on the side of the corresponding guide plate 5 away from the bottom wall of the mounting groove 15, and the guide plate 5 is fixed between the upper and lower walls of the mounting groove 15, so that the upper surface of the guide plate 5 is flush with the upper surface of the hanging block 102, and the lower surface of the guide plate 5 is flush with the lower surface of the hanging block 102. When the hanger block 102 extends into the annular limiting hole in the bridge deck and the bridge deck is lifted, the bridge deck applies pressure to the upper surface of the portion of the hanger block 102 extending into the annular limiting hole, so that the hanger block 102 applies force to the top wall of the mounting groove 15 through the portion located in the mounting groove 15. Since the cross-section of the guide plate 5 is cross-shaped, the portion of the guide plate 5 extending into the hanger block 102 can share part of the force, thereby avoiding stress concentration on the top wall of the mounting groove 15 and improving the structural strength of the hanger 101.

[0036] Reference Figure 3 and Figure 5, a reinforcing plate 6 is hinged on one side of adjacent hanging blocks 102 that are close to each other, and the hinge axis of the reinforcing plate 6 is parallel to the axial direction of the hanging rod 101. The hinge position of the reinforcing plate 6 and the corresponding hanging block 102 is located on the side of the hanging block 102 away from the bottom wall of the installation groove 15, and the reinforcing plate 6 extends toward the direction close to the bottom wall of the installation groove 15. The two reinforcing plates 6 between adjacent hanging blocks 102 are hinged to each other at one end away from the corresponding hanging block 102, and the upper surface of the reinforcing plate 6 is flush with the upper surface of the hanging block 102, and the lower surface of the reinforcing plate 6 is flush with the lower surface of the hanging block 102. When the hanger block 102 moves in a direction away from the hanger rod 101, the two adjacent hanger blocks 102 will pull the reinforcing plate 6 to rotate accordingly, so that the two reinforcing plates 6 will unfold. On the one hand, the setting of the reinforcing plate 6 enhances the connection strength between the two adjacent hanger blocks 102; on the other hand, since one end of the two reinforcing plates 6 is hinged to each other and is located in the mounting groove 15, and the upper and lower surfaces of the two reinforcing plates 6 are in contact with the upper and lower inner walls of the mounting groove 15, a certain support can be formed, which expands the force-bearing surface and improves the stability of the bridge deck hoisting.

[0037] Reference Figure 2 A tensioning screw 7 is provided along the length direction of the suspension rod 101, and the tensioning screw 7 passes through the cross bar 103. A tensioning plate 8 is fixed to the lower end of the tensioning screw 7, and the tensioning plate 8 abuts against the bottom wall of the suspension rod 101. A locking nut 9 is screwed on the upper end of the tensioning screw 7, and the locking nut 9 abuts against the side of the cross bar 103 away from the suspension rod 101. By setting the tensioning screw 7, the suspension rod 101 can be further tightened on the cross bar 103, so that the suspension rod 101 can withstand the gravity of the bridge deck, and the structural strength of the hanger 1 is ensured.

[0038] The implementation principle of the construction device of the prefabricated bridge deck of the steel-concrete composite beam in the embodiment of the present application is: when in use, the bridge deck is moved to the bottom of the lifting device 1 on the lifting frame by a pallet truck, so that the suspension rod 101 is aligned with the suspension hole reserved on the bridge deck; at this time, the suspension block 102 is located in the installation groove 15, the connecting rope 3 and the pull rope 13 are both in a tensioned state, the limit plate 10 is disengaged from the limit rack 11, and the push spring 2 is in a compressed state.

[0039] Then, the sling 1 is lowered by the lifting mechanism so that the suspension rod 101 of the sling 1 extends into the suspension hole reserved on the bridge deck. When the lower end of the suspension rod 101 abuts against the bottom wall of the suspension hole reserved on the bridge deck, the suspension block 102 is aligned with the annular limiting hole on the inner wall of the suspension hole of the bridge deck. Then, the winch 4 is started, and the winch 4 unwinds a plurality of connecting ropes 3. The tension of the connecting ropes 3 on the suspension block 102 is reduced, and the compressed push spring 2 pushes the suspension block 102 to slide along the guide plate 5 in the direction away from the suspension rod 101, so that the suspension block 102 gradually extends into the annular limiting hole on the inner wall of the suspension hole of the bridge deck, and the two adjacent suspension blocks 102 drive the corresponding reinforcement plates 6 to unfold, causing the reinforcement plates 6 to rotate. Adapt to the movement of the hanging block 102; then the end of the transmission rod 12 away from the limiting plate 10 abuts against the inner wall of the annular limiting hole on the inner wall of the bridge deck hanging hole. As the hanging block 102 continues to move, the abutting transmission rod 12 slides toward the direction close to the hanging block 102, causing the transmission rod 12 and the arc surface on the corresponding slider 14 to slide relative to each other, pushing the corresponding slider 14 and the limiting plate 10 to move upward, so that the limiting plate 10 engages with the corresponding limiting rack 11. At this time, the side of the hanging block 102 away from the pushing spring 2 abuts against the inner wall of the annular limiting hole reserved on the bridge deck, realizing the snap-fitting of multiple hanging blocks 102 with the annular limiting holes, and the connecting rope 3 and the pull rope 13 are both in a relaxed state.

[0040] Then, the lifting device 1 and the bridge deck are lifted by the lifting mechanism, and the bridge deck is lifted by the contact between the lifting block 102 and the upper and lower inner walls of the annular limiting hole, and then the pallet truck moves back to continue transporting the bridge deck; the lifting device 1 and the bridge deck are lowered by the lifting mechanism again, so that the bridge deck is lowered to the installation position; then the winch 4 is started to work in reverse, so that the winch 4 reels in the connecting rope 3. When the connecting rope 3 is reeled in, the pull rope 13 will be pulled first to make the limiting plate 10 away from the corresponding limiting rack 11. Since the slider 14 cannot move downward under the contact of the transmission rod 12, the limiting plate 10 compresses the spring between the limiting plate 10 and the slider 14, thereby disengaging the limiting plate 10 from the corresponding limiting rack 11, and then the connecting rope 3 continues to pull the lifting block. 102 is close to the installation groove 15, and the spring between the limit plate 10 and the slider 14 pushes the slider 14 downward. The downward movement of the slider 14 can push the transmission rod 12 to move a certain distance in the direction away from the corresponding limit plate 10 to achieve reset; then the connecting rope 3 continues to pull the hanging block 102 to slide in the direction close to the hanging rod 101, so that the hanging block 102 is disengaged from the annular limit hole on the bridge deck, and then the lifting device 1 is driven to rise through the lifting mechanism, and the installation of the bridge deck can be completed. Since only lifting holes and limit holes need to be reserved on the bridge deck, and there is no need to pre-embed multiple lifting rings on the bridge deck, and the lifting device can be reused, it helps to reduce construction costs and can be widely used in lifting bridge decks with small volume and span.

[0041] The present application also discloses an application method of a construction device for a steel-concrete composite beam prefabricated bridge deck. The application method of the construction device for a steel-concrete composite beam prefabricated bridge deck comprises the following steps: Step 1: Use a pallet truck to move the bridge deck to the bottom of the lifting device 1 on the lifting frame, so that the suspension rod 101 is aligned with the reserved lifting hole on the bridge deck; Step 2: lower the sling 1 through the lifting mechanism, so that the sling rod 101 extends into the sling hole reserved in the bridge deck, and aligns the sling block 102 with the annular limiting hole on the inner wall of the sling hole of the bridge deck; Step 3: Then start the winch 4 to unwind multiple connecting ropes 3, the tension of the connecting ropes 3 on the hanging block 102 is reduced, and the spring 2 pushes the hanging block 102 to slide in the direction away from the hanging rod 101, and the hanging block 102 extends into the annular limiting hole on the bridge deck, and then the transmission rod 12 abuts against the inner wall of the annular limiting hole on the bridge deck, so that the transmission rod 12 approaches the corresponding hanging block 102, and the transmission rod 12 and the arc surface of the slider 14 slide relative to each other to push the slider 14 to drive the limiting plate 10 to move upward, so that the limiting plate 10 is engaged with the corresponding limiting rack 11, and then multiple hanging blocks 102 are engaged with the annular limiting holes on the inner wall of the hanging hole on the bridge deck; Step 4: Then, the lifting device 1 is lifted by the lifting mechanism, and the bridge deck is lifted by engaging the lifting block 102 with the annular limiting hole on the inner wall of the lifting hole on the bridge deck; Step 5: The pallet truck then moves back to continue transporting the bridge deck; Step 6: lower the sling 1 and the bridge deck through the lifting mechanism, so that the bridge deck is lowered to the installation position; Step 7: Then start the winch 4 to reel in the connecting rope 3. The connecting rope 3 first pulls the limit plate 10 away from the limit rack 11 through the pull rope 13, compressing the spring between the limit plate 10 and the slider 14. Then the connecting rope 3 pulls the hanging block 102 to slide in the direction close to the suspension rod 101. The spring between the limit plate 10 and the slider 14 pushes the slider 14 to move downward, so that the arc surface of the slider 14 abuts the transmission rod 12 and moves back to the direction away from the limit plate 10, until the hanging block 102 is disengaged from the annular limit hole on the inner wall of the hanging hole on the bridge deck, and the hanging block 102 is completely moved into the installation groove 15. Then the lifting device 1 is driven to rise through the lifting mechanism, and the installation of a bridge deck is completed.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A construction device for a prefabricated steel-concrete composite beam bridge deck, comprising a hoist (1) for being arranged on a lifting mechanism, characterized in that: The hanger (1) comprises a hanger rod (101) and a plurality of hanger blocks (102) slidably arranged on the hanger rod (101); the hanger rod (101) is used to extend into a hanger hole reserved in a bridge deck; the plurality of hanger blocks (102) are arranged along the circumference of the hanger rod (101); the sliding direction of the hanger block (102) is perpendicular to the axial direction of the hanger rod (101); the hanger block (102) is used to engage with an annular limiting hole provided on the inner wall of the hanger hole on the bridge deck; the hanger rod (101) is provided with an adjusting component for adjusting the hanger block (102) to slide in a direction close to or away from the hanger rod (101).

2. The construction device for a prefabricated steel-concrete composite beam bridge deck according to claim 1 is characterized in that: The adjustment assembly comprises a push spring (2) arranged in the suspension rod (101) and a pulling member arranged on the suspension rod (101), wherein the push spring (2) is used to push the suspension block (102) to slide in a direction away from the suspension rod (101), and the pulling member is used to pull the suspension block (102) to slide in a direction close to the suspension rod (101).

3. The construction device for a prefabricated steel-concrete composite beam bridge deck according to claim 2 is characterized in that: The pulling member comprises a connecting rope (3) arranged on a suspension block (102) and a hoist (4) arranged on a suspension rod (101); the connecting rope (3) is connected to a side of the suspension block (102) close to the suspension rod (101); an end of the connecting rope (3) away from the suspension block (102) slides out of the suspension rod (101) and is wound around the hoist (4).

4. The construction device for a prefabricated steel-concrete composite beam bridge deck according to claim 3 is characterized in that: A limit plate (10) is slidably arranged on one side of the suspension block (102) close to the suspension rod (101); the sliding direction of the limit plate (10) is parallel to the axial direction of the suspension rod (101); a limit rack (11) is arranged inside the suspension rod (101); the limit rack (11) corresponds to the limit plate (10) one by one; the length direction of the limit rack (11) is parallel to the sliding direction of the corresponding suspension block (102); a sliding member is arranged on the suspension block (102); the sliding member is used to adjust the limit plate (10) to slide in a direction close to or away from the corresponding limit rack (11).

5. The construction device for a prefabricated steel-concrete composite beam bridge deck according to claim 4, characterized in that: The sliding member comprises a transmission rod (12) slidably inserted into the suspension block (102) and a pull rope (13) arranged on the limit plate (10); the sliding direction of the transmission rod (12) is parallel to the sliding direction of the corresponding suspension block (102); the limit plate (10) is slidably connected with a slider (14) via a spring; the sliding direction of the slider (14) is parallel to the sliding direction of the limit plate (10); a side of the slider (14) close to the corresponding suspension block (102) is an arc surface; The side of the arc surface away from the corresponding limiting rack (11) is inclined toward the direction away from the hanging block (102); one end of the transmission rod (12) is used to abut against the inner wall of the annular limiting hole opened on the inner wall of the hanging hole on the bridge deck, and the other end is used to abut against the arc surface of the slider (14); the end of the pull rope (13) away from the limiting plate (10) is connected to the corresponding connecting rope (3); when the pull rope (13) is in a tensioned state, the end of the connecting rope (3) close to the hanging block (102) is in a relaxed state.

6. The construction device for a prefabricated steel-concrete composite beam bridge deck according to claim 1, characterized in that: A guide plate (5) is arranged inside the suspension rod (101), the cross section of the guide plate (5) is cross-shaped, the guide plate (5) corresponds to the suspension block (102) one by one, the suspension block (102) and the guide plate (5) are slidably connected, the upper surface of the guide plate (5) is flush with the upper surface of the suspension block (102), and the lower surface of the guide plate (5) is flush with the lower surface of the suspension block (102).

7. The construction device for prefabricated steel-concrete composite beam bridge deck according to claim 1, characterized in that: A reinforcing plate (6) is hingedly connected to each other on one side of the adjacent hanging blocks (102), the hinge axis of the reinforcing plate (6) is parallel to the axial direction of the hanging rod (101), and the two reinforcing plates (6) between the adjacent hanging blocks (102) are hingedly connected to each other.

8. The construction device for prefabricated steel-concrete composite beam bridge deck according to claim 7, characterized in that: The upper surface of the reinforcing plate (6) is flush with the upper surface of the hanging block (102), and the lower surface of the reinforcing plate (6) is flush with the lower surface of the hanging block (102).

9. A construction device for a prefabricated steel-concrete composite beam bridge deck according to any one of claims 1 to 8, characterized in that: The hanger (1) also includes a cross bar (103), the hanger (101) is arranged on the cross bar (103), a tensioning screw (7) is passed through the hanger (101), the tensioning screw (7) passes through the cross bar (103), a tensioning plate (8) is provided at one end of the tensioning screw (7), the tensioning plate (8) is in contact with the bottom wall of the hanger (101), a locking nut (9) is screwed on the tensioning screw (7), and the locking nut (9) is in contact with the side of the cross bar (103) away from the hanger (101).

10. An application method of the construction device for the prefabricated steel-concrete composite beam bridge deck according to any one of claims 1 to 9, characterized in that: The steps include: The bridge deck is moved to the position directly below the lifting device (1) in the lifting frame by means of a pallet truck, so that the suspension rod (101) is aligned with the suspension hole reserved on the bridge deck; The lifting device (1) is lowered by a lifting mechanism, so that the lifting rod (101) extends into a lifting hole reserved on the bridge deck, and the lifting block (102) is aligned with the annular limiting hole on the inner wall of the lifting hole of the bridge deck; Then, the adjusting assembly is used to adjust the hanging block (102) to slide in a direction away from the hanging rod (101), and the hanging block (102) extends into the annular limiting hole on the inner wall of the bridge deck hanging hole, so that the plurality of hanging blocks (102) are engaged with the annular limiting holes on the inner wall of the bridge deck hanging hole; Then, the lifting device (1) is lifted by the lifting mechanism, and the bridge deck is lifted by engaging the lifting block (102) with the annular limiting hole on the inner wall of the bridge deck lifting hole; Then the pallet truck moves back to continue transporting the bridge deck; Lowering the sling (1) and the bridge deck by means of a lifting mechanism, so that the bridge deck is lowered to an installation position; The adjusting assembly is used to adjust the hanging block (102) to slide in a direction close to the hanging rod (101), so that the hanging block (102) is disengaged from the annular limiting hole on the inner wall of the hanging hole on the bridge deck, and then the lifting device (1) is driven to rise by the lifting mechanism, thereby completing the installation of a bridge deck.

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