Crane for bridge floor construction and construction method thereof

Abstract

The invention relates to the technical field of bridge floor cranes, and particularly discloses a crane for bridge floor construction and a construction method of the crane. The positioning assembly comprises a positioning rod horizontally assembled on the crane body in a sliding mode, a pushing piece connected with the positioning rod, a plurality of positioning plates assembled on the side face of the positioning rod in a sliding mode and a driving piece connected with the positioning plates. The lifting appliance comprises a connecting part, and a positioning groove is formed in the connecting part; after the connecting part and the positioning rod are located at the same height, the connecting part is moved through a lifting tool so that the positioning rod can be inserted into the positioning groove, then the driving piece drives the multiple positioning plates to move to abut against the inner wall of the positioning groove so as to position the steel box girder section, and then the pushing piece drives the steel box girder section to be close to the steel box girder body through the positioning rod and the connecting part; the crane for bridge floor construction and the construction method thereof have the effect of improving the assembly efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of bridge deck cranes, and specifically to a bridge deck construction crane and its construction method. Background Technology

[0002] In bridge construction, structures such as steel box girders, precast beam segments, and main beams of cable-stayed bridges often require the splicing of multiple parts. Among these, cranes are important pieces of equipment in bridge deck construction, mainly used to lift heavy components to designated locations for subsequent installation.

[0003] Patent document CN212315387U discloses a bridge deck crane, which includes a frame, a fixed pulley, a movable pulley, a traction drive device, and rigging. The fixed pulley is rotatably mounted on one end of the top of the frame, and the movable pulley is located directly below the fixed pulley. The traction drive device is positioned at a predetermined distance from the other end of the frame. The traction drive device has a traction rope, which is wound around the fixed pulley and the movable pulley. The movement of the movable pulley is achieved by rotating the fixed pulley and the movable pulley through the opening and closing of the traction rope. When the movable pulley rises to a point where it abuts against the fixed pulley, the traction rope is engaged, thereby causing the frame to slide. The rigging is mounted on the pulley seat of the movable pulley.

[0004] By configuring a frame, fixed pulleys, movable pulleys, a traction drive device, and rigging, and by setting the traction drive device at a predetermined distance from the frame, the traction rope of the traction drive device drives the fixed and movable pulleys to rotate, thus achieving the lifting and lowering movement of the movable pulley. The rigging is fixed to the rope of the suspended object by being mounted on the pulley seat of the movable pulley, thereby lifting and lowering the suspended object. When the movable pulley rises to a point where it abuts against the fixed pulley, the traction rope is engaged, causing the frame to slide. The lifting and lowering movement of the suspended object and the sliding movement of the frame are achieved through the traction drive device.

[0005] However, this solution has the following problems: When hoisting the steel box girders, multiple girders need to be spliced ​​one by one, and precise positioning is required during the splicing process. Specifically, the traction drive device lifts the steel box girder to the designated position using traction ropes and rigging, and then positions and fixes it in place. However, due to the traction ropes or external wind forces, the hoisted steel box girder inevitably sways when moving vertically or horizontally, making positioning difficult and affecting assembly efficiency. Summary of the Invention

[0006] This invention provides a crane for bridge deck construction and its construction method, aiming to solve the problem in related technologies where swaying during the hoisting of steel box girders can affect assembly.

[0007] In a first aspect, the present invention provides a crane for bridge deck construction, comprising a crane body located above a steel box girder, the crane body including a lifting device for lifting steel box girder segments, and a positioning assembly provided on the crane body, the positioning assembly including: a positioning rod horizontally slidably mounted on the crane body, a pushing member connected to the positioning rod, multiple positioning plates slidably mounted on the side of the positioning rod, and a driving member connected to the positioning plates; the lifting device includes a connecting part, the connecting part having a positioning groove horizontally opened facing the positioning rod for the positioning rod to be inserted; after the connecting part and the positioning rod are at the same height, the connecting part is moved by the lifting device to insert the positioning rod into the positioning groove, and then the driving member drives the multiple positioning plates to move until they all abut against the inner wall of the positioning groove, so that the center lines of the positioning rod and the positioning groove are on the same straight line to position the steel box girder segment, and then the pushing member drives the steel box girder segment closer to the steel box girder body through the positioning rod and the connecting part.

[0008] The effect is that this application, by setting positioning rods and positioning plates to cooperate with the connecting part, assists in supporting and positioning the steel box girder segment, thereby eliminating the negative impact of swaying. Specifically, after the connecting part moves to the same height as the positioning rod, the crane body drives the connecting part to move closer to the positioning rod, so that the positioning rod is inserted into the positioning groove. Subsequently, the driving component drives the positioning plate to move closer to the side wall of the positioning groove. After multiple positioning plates abut against the inner wall of the positioning groove, the center line of the positioning groove and the center line of the positioning rod are on the same straight line, thereby realizing the support of the connecting part by the positioning rod, making the steel box girder segment more stable and preventing swaying. At the same time, the multiple positioning plates abut against the inner wall of the positioning groove, so that the steel box girder segment and the steel box girder body are aligned in the horizontal direction, so that after the pushing component drives the steel box girder segment to move to the alignment with the steel box girder body, it can be positioned, improving the efficiency of subsequent assembly.

[0009] Preferably, the crane body is provided with a positioning sleeve, and the positioning rod is slidably assembled in the positioning sleeve. The end of the positioning sleeve is flush with the steel box girder in the vertical direction, and a baffle is provided on the positioning rod. After the positioning rod is inserted into the positioning groove, the distance between the baffle and the positioning sleeve is the same as the distance between the steel box girder and the steel box girder segment.

[0010] Its effect is that after the positioning rod is fully inserted into the positioning groove, the distance between the baffle and the positioning sleeve is the same as the distance between the steel box girder segment and the steel box girder body. When the pushing component moves the positioning rod, the baffle stops moving after it comes into contact with the positioning sleeve, so as to judge the movement distance of the positioning rod.

[0011] Preferably, the positioning rod has a groove on its side for installing the positioning plate. The positioning plate includes a horizontal plate and a vertical plate. There are two sets of both the horizontal and vertical plates. There are two horizontal plates located on the horizontal sides of the positioning rod, and two vertical plates located on the upper and lower sides of the positioning rod, respectively. The horizontal plate slides on the positioning rod in the horizontal direction, and the vertical plate slides on the positioning rod in the vertical direction.

[0012] Its effect is that the horizontal plate corrects the connection in the horizontal direction, and the vertical plate corrects the connection in the vertical direction.

[0013] Preferably, the driving component includes: motor one, motor two, an inner rod rotatably assembled inside the positioning rod, and a sleeve rod rotatably sleeved outside the inner rod. The output end of motor one is connected to the inner rod, and the output end of motor two is connected to the sleeve rod. When motor one drives the inner rod to rotate, it controls the movement of the horizontal plate. When motor two drives the sleeve rod to rotate, it controls the movement of the vertical plate.

[0014] Preferably, the sleeve rod is rotatably equipped with a sleeve block 1 and an inner block 1, and slidably equipped with a sleeve block 2. The sleeve rod has a threaded groove 1 that is threadedly engaged with the sleeve block 2 on its outer side. A slider 1 is slidably arranged on the vertical plate along the length of the sleeve rod. The slider 1 is located in the middle of the sleeve block 1 and the sleeve block 2. A connecting rod 1 is rotatably arranged between the sleeve block 1 and the slider 1, and between the sleeve block 2 and the slider 1. The inner rod is slidably equipped with an inner block 2 on its outer side. The inner rod has a threaded groove 2 that is threadedly engaged with the inner block 2 on its outer side. A slider 2 is slidably arranged on the horizontal plate along the length of the inner rod. The slider 2 is located in the middle of the inner block 2 and the inner block 1. A connecting rod 2 is rotatably arranged between the inner block 1 and the slider 2, and between the inner block 2 and the slider 2.

[0015] The effect is that the rotation of the inner rod causes the second inner block to move closer to the first inner block, the movement of the first inner block causes the second connecting rod to rotate, and the rotation of the second connecting rod pushes the horizontal plate to move, thereby adjusting the position of the horizontal plate. Similarly, the sleeve rod causes the second sleeve block to move closer to the first sleeve block, which in turn causes the vertical plate to move via the first connecting rod, adjusting the position of the vertical plate, thus adjusting the connection part in both the horizontal and vertical directions.

[0016] Preferably, sleeve block one and sleeve block two are disposed between inner block one and inner block two, and the rotation surface of connecting rod one is perpendicular to the rotation surface of connecting rod two.

[0017] Its effect is to avoid interference between link one and link two, and to ensure the stability of multiple structures during operation.

[0018] Preferably, the horizontal plate includes: a receiving part that is slidably assembled in the groove, and an abutting part that is slidably assembled in the receiving part. A relief groove is provided on the side of the receiving part near the abutting part, and an intermediate plate is provided on the side of the abutting part near the receiving part. A spring is provided on the intermediate plate that connects to the inner wall of the relief groove. When the abutting part abuts against the side wall of the positioning groove, it moves completely to the outside of the groove.

[0019] Preferably, two sets of guide plates are spaced apart on the inner wall of the positioning groove. The two sets of guide plates correspond to the horizontal sides of the positioning rod respectively. Each set consists of two guide plates spaced apart along the length of the positioning rod. The gap between the two guide plates corresponds to the horizontal plate. A guide slope is provided on the side of the two guide plates that is close to each other. The horizontal plate moves between the two guide plates through the guide slope.

[0020] Preferably, a telescopic rod 1 is provided between the two vertical plates to connect them, and a telescopic rod 2 is provided between the two horizontal plates to connect them.

[0021] Secondly, the present invention provides a bridge deck construction method, employing the aforementioned bridge deck construction crane, comprising the following steps: Move the crane body so that the end of the positioning sleeve is aligned with the end of the steel box girder in the vertical direction; Connect the lifting device to the steel box girder segment, and the crane body lifts the steel box girder segment upward. After the connecting part moves to the same height as the positioning rod, it drives the connecting part to approach the positioning rod until the positioning rod is inserted into the positioning groove. The driving component moves the positioning plate to engage with the inner wall of the positioning groove. The pusher moves the positioning rod, and at the same time, the crane body moves the connecting part and the positioning rod synchronously. After the baffle and the positioning sleeve come into contact, the positioning rod and the connecting part stop moving, and the steel box girder segment is assembled.

[0022] Its effect is that before the moving steel box girder segment is matched with the steel box girder body, the positioning rod is matched with the positioning groove on the connecting part. With the assistance of the positioning rod, the influence of the steel wire rope swaying is eliminated, so as to carry out subsequent positioning and improve assembly efficiency.

[0023] Beneficial effects: This invention sets up a positioning rod that cooperates with a positioning groove on the connecting part. After the positioning rod is inserted into the positioning groove, multiple positioning plates are moved to abut against the positioning groove in multiple positions, so that the center line of the positioning groove and the center line of the positioning rod are on the same straight line. The positioning plates support the connecting part, which reduces the swaying of the steel box girder section and corrects the position of the steel box girder section to facilitate subsequent assembly, thereby improving assembly efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a partial structural diagram of the present invention.

[0026] Figure 3 This is a schematic diagram of the positioning sleeve and baffle in this invention.

[0027] Figure 4This is a partial exploded view of the positioning rod and the connecting part in this invention.

[0028] Figure 5 This is a schematic diagram of the cooperation between the positioning rod and the positioning groove in this invention.

[0029] Figure 6 This is a schematic diagram of the internal structure of the positioning rod in this invention.

[0030] Figure 7 yes Figure 6 A schematic diagram of the structure at point A in the middle.

[0031] Figure 8 yes Figure 6 A schematic diagram of the structure at point B.

[0032] Figure 9 This is a schematic diagram of the positioning plate in this invention.

[0033] Figure 10 This is a schematic diagram of the inner rod and sleeve rod in this invention.

[0034] Figure 11 This is a cross-sectional view of the horizontal plate in this invention.

[0035] Figure 12 yes Figure 11 A sectional view of section AA in the middle.

[0036] Figure label: 01. Steel box girder body; 02. Steel box girder segment; 1. Crane body; 11. Lifting gear; 12. Steel wire rope; 2. Positioning rod; 21. Slide groove; 3. Pushing component; 4. Positioning plate; 41. Horizontal plate; 411. Slider II; 412. Receiving part; 413. Abutting part; 414. Clearance groove; 415. Intermediate plate; 416. Spring; 42. Vertical plate; 421. Slider I; 422. Slide rail; 5. Driving component; 51. Motor I; 52. Motor II; 53. Inner... 531. Rod; 54. Sleeve rod; 541. Threaded groove one; 6. Connecting part; 61. Hook; 62. Positioning groove; 7. Positioning sleeve; 71. Baffle; 72. Linkage rod; 73. Drive rod one; 74. Drive rod two; 75. Bevel gear set one; 76. Bevel gear set two; 8. Inner block one; 82. Inner block two; 83. Connecting rod two; 84. Sleeve block one; 85. Sleeve block two; 86. Connecting rod one; 9. Guide plate; 91. Telescopic rod one; 92. Telescopic rod two. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0038] This invention discloses a crane for bridge deck construction.

[0039] Reference Figures 1 to 12 The crane used for bridge deck construction includes a lifting device 11 mounted on the crane body 1. The lifting device 11 is connected to the crane body 1 via a steel wire rope 12. The crane body 1 is located above the steel box girder 01. The lifting device 11 is used to lift the steel box girder segment 02, wherein the steel box girder 01 is composed of multiple steel box girder segments 02 spliced ​​together. After the lifting device 11 is connected to the steel box girder segment 02, the crane body 1 moves the lifting device 11 and the steel box girder segment 02 upwards to the same height as the steel box girder 01 via the steel wire rope 12. Then, the steel box girder segment 02 is moved horizontally closer to the steel box girder 01, and finally, the steel box girder segment 02 is fixed to the steel box girder 01.

[0040] A positioning component is installed on the crane body 1. When the steel box girder segment 02 approaches the steel box girder body 01, the positioning component is used to position the steel box girder segment 02 so that the ends of the steel box girder segment 02 are aligned with the ends of the steel box girder body 01 for subsequent assembly.

[0041] Reference Figure 2 , Figure 3 , Figure 4 The positioning assembly includes: a positioning rod 2, a pusher 3, a positioning plate 4, and a drive component 5. The positioning rod 2 slides horizontally on the crane body 1. The pusher 3 is a cylinder, and its output end is connected to the positioning rod 2 to drive the positioning rod 2 to move on the crane body 1. Multiple positioning plates 4 are provided on the side of the positioning rod 2, and multiple positioning plates 4 are slidably assembled on the positioning rod 2. The drive component 5 is connected to the positioning plate 4 to drive the positioning plate 4 to slide relative to the positioning rod 2.

[0042] Reference Figure 1 , Figure 2 The lifting device 11 includes a connecting part 6 and two hooks 61 located at the bottom of the connecting part 6. The connecting part 6 is arranged along the length direction of the steel box girder segment 02. A positioning groove 62 is provided at the end of the connecting part 6 near the positioning rod 2. The positioning groove 62 is arranged in a horizontal direction. The positioning groove 62 is for the positioning rod 2 to be inserted. After the positioning rod 2 is inserted into the positioning groove 62, a gap is left between the positioning rod 2 and the positioning groove 62 so that when the connecting part 6 is close to the positioning rod 2, the positioning rod 2 can be inserted into the positioning groove 62.

[0043] Initially, the positioning plate 4 is flush with the side of the positioning rod 2, and the positioning plate 4 is in a retracted state. After the crane body 1 moves the steel box girder segment 02 upward to the same height as the steel box girder body 01, the connecting part 6 and the positioning rod 2 are also at the same height, moving the steel box girder segment 02 closer to the steel box girder body 01, so that the positioning rod 2 is gradually inserted into the positioning groove 62. Subsequently, the driving component 5 moves the positioning plate 4 away from the positioning rod 2 and gradually unfolds. The driving component 5 moves the positioning plate 4 to abut against the inner wall of the positioning groove 62. After multiple positioning plates 4 abut against the inner wall of the positioning groove 62, the center line of the positioning rod 2 and the center line of the positioning groove 62 are on the same straight line, so that the steel box girder segment 02 and the steel box girder body 01 are aligned in the horizontal direction. At the same time, the positioning rod 2 can support the steel box girder segment 02 through the positioning plate 4 to reduce the swaying of the steel box girder segment 02 and eliminate the instability of the wire rope 12 during hoisting. Finally, the pusher 3 moves the positioning rod 2 closer to the steel box girder 01, and the crane body 1 moves the connecting part 6 at the same time until the steel box girder section 02 abuts against the steel box girder 01 for subsequent installation.

[0044] Reference Figure 1 , Figure 2 , Figure 3 A positioning sleeve 7 is installed on the crane body 1, and a positioning rod 2 is slidably fitted inside the positioning sleeve 7. A baffle 71 is installed on the positioning rod 2. During construction, the crane body 1 is moved so that the front end of the positioning sleeve 7 is vertically aligned with the end of the steel box girder 01. After the positioning rod 2 is fully inserted into the positioning groove 62, the distance between the baffle 71 and the positioning sleeve 7 is the same as the distance between the end of the steel box girder and the steel box girder 01. The pushing component 3 drives the positioning rod 2 to move. After the baffle 71 abuts against the end of the positioning sleeve 7, the steel box girder segment 02 abuts against the steel box girder 01, and the positioning rod 2 stops moving, so as to determine the distance the positioning rod 2 has moved.

[0045] Reference Figure 2 , Figure 3 , Figure 4 Two sets of connecting parts 6 are arranged in parallel, connecting to multiple positions on the steel box girder segment 02 to ensure the stability of the steel box girder segment 02 during hoisting. Two positioning rods 2 are corresponding to the two connecting parts 6, arranged in parallel. A linkage rod 72 is provided between the two positioning rods 2, and the output end of the pushing component 3 is connected to the linkage rod 72. When the lifting device 11 moves the connecting parts 6 horizontally, the two sets of positioning rods 2 are inserted into the two connecting parts 6 respectively to assist in positioning the steel box girder segment 02.

[0046] Reference Figure 4 A sliding groove 21 is provided on the side of the positioning rod 2. Multiple sliding grooves 21 are provided, and the multiple sliding grooves 21 are respectively provided on the upper and lower sides and the left and right sides of the positioning rod 2.

[0047] Reference Figure 5 , Figure 9 The positioning plate 4 includes a horizontal plate 41 and a vertical plate 42. There are two sets of both the horizontal plate 41 and the vertical plate 42. Two horizontal plates 41 form one set, and two vertical plates 42 form another set. Two horizontal plates 41 are located on the horizontal sides of the positioning rod 2, and two vertical plates 42 are located on the upper and lower sides of the positioning rod 2. The horizontal plate 41 and the vertical plate 42 are slidably assembled in the slide groove 21. That is, the horizontal plate 41 slides horizontally in the slide groove 21, and the vertical plate 42 slides vertically in the slide groove 21.

[0048] The driving component 5 drives the horizontal plate 41 and the vertical plate 42 to slide successively until they abut against the inner wall of the positioning groove 62. After the two horizontal plates 41 abut against the inner wall of the positioning groove 62, they drive the steel box girder segment 02 to align with the steel box girder body 01 in the horizontal direction. After the two vertical plates 42 abut against the inner wall of the positioning groove 62, they drive the steel box girder segment 02 to align with the steel box girder body 01 in the vertical direction.

[0049] To facilitate vertical alignment of the steel box girder segment 02 with the steel box girder body 01, during hoisting of the steel box girder segment 02, the height of the steel box girder segment 02 is slightly lower than that of the steel box girder body 01. During the contact between the vertical plate 42 and the positioning groove 62, the height of the connecting part 6 is appropriately raised so that both vertical plates 42 are in contact with the inner wall of the positioning groove 62, thereby aligning the steel box girder segment 02 with the steel box girder body 01 in the vertical direction.

[0050] Reference Figure 4 , Figure 5 , Figure 6 , Figure 8 The driving component 5 includes: a first motor 51, a second motor 52, an inner rod 53, and a sleeve rod 54. Both the inner rod 53 and the sleeve rod 54 are rotatably mounted inside the positioning rod 2, and the sleeve rod 54 is rotatably sleeved outside the inner rod 53. The center lines of the inner rod 53 and the positioning rod 2 are on the same straight line. The output end of the first motor 51 is connected to the inner rod 53, and the output end of the second motor 52 is connected to the sleeve rod 54. The first motor 51 and the second motor 52 are mounted on the linkage rod 72. The end of the inner rod 53 extends outside the sleeve rod 54. A first driving rod 73 is provided between the inner rods 53 within the two positioning rods 2, that is, the first driving rod 73 is perpendicular to the inner rods 53 within the two positioning rods 2. Both ends of the first driving rod 73 are provided with bevel gear sets 75, and the first driving rod 73 is connected to the two inner rods 53 through the bevel gear sets 75.

[0051] Reference Figure 6 , Figure 7A second drive rod 74 is provided between the sleeve rods 54 inside the two positioning rods 2. The second drive rod 74 is perpendicular to the sleeve rods 54 inside the two positioning rods 2. Both ends of the second drive rod 74 are provided with bevel gear sets 76, which connect the second drive rod 74 to the two sleeve rods 54. A first motor 51 is connected to a first drive rod 73 via a coupling, and a second motor 52 is connected to a second drive rod 74 via a coupling.

[0052] Motor 1 51 drives the two inner rods 53 to rotate simultaneously via drive rod 1 73, and motor 2 52 drives the two sleeve rods 54 to rotate simultaneously via drive rod 2 74.

[0053] Reference Figure 8 , Figure 9 , Figure 10 An inner block 8 is provided outside the sleeve rod 54, and the inner block 8 is rotatably disposed outside the sleeve rod 54. The end of the inner rod 53 extends to the outside of the sleeve rod 54. An inner block 82 is provided outside the inner rod 53, and the inner block 82 is slidably assembled inside the inner rod 53, that is, the inner block 82 slides on the inner rod 53 along the length direction of the inner rod 53. The inner block 8 and the inner block 82 are spaced apart. A threaded groove 531 is provided on the inner rod 53 to thread with the inner block 82. A slider 411 is slidably assembled on the horizontal plate 41. The sliding direction of the slider 411 is parallel to the inner rod 53. The slider 411 is located in the middle of the inner block 8 and the inner block 82. A connecting rod 83 is rotatably disposed between the inner block 8 and the slider 411, and between the inner block 82 and the slider 411. The connecting rod 83 is in an inclined state.

[0054] When the inner rod 53 is rotated, the inner rod 53 drives the inner block 82 to move closer to the inner block 8 through the threaded groove 531, which in turn drives the connecting rod 83 to rotate. The rotation of the connecting rod 83 pushes the horizontal plate 41 to move, thereby adjusting the position of the horizontal plate 41.

[0055] Reference Figure 8 , Figure 9 , Figure 10 A first sleeve block 84 and a second sleeve block 85 are provided on the outside of the sleeve rod 54. The first sleeve block 84 and the second sleeve block 85 are spaced apart along the length of the sleeve rod 54. The first sleeve block 84 is rotatably disposed on the outside of the sleeve rod 54, and the second sleeve block 85 is slidably disposed on the outside of the sleeve rod 54, and the second sleeve block 85 slides along the length of the sleeve rod 54. A threaded groove 541 is provided on the sleeve rod 54 to thread into the second sleeve block 85. A slider 421 is slidably disposed on the vertical plate 42. The sliding direction of the slider 421 is parallel to the length of the sleeve rod 54. The slider 421 is located in the middle position between the first sleeve block 84 and the second sleeve block 85. A connecting rod 86 is rotatably connected between the first sleeve block 84 and the slider 421, and between the second sleeve block 85 and the slider 421. The connecting rod 86 is in an inclined state.

[0056] When the sleeve rod 54 rotates, it drives the sleeve block 85 to move closer to the sleeve block 84 via the threaded groove 541. The slider 421 slides on the vertical plate 42. At this time, the connecting rod 86 rotates to push the vertical plate 42 to move, thereby adjusting the position of the vertical plate 42. Connecting rods 86 are provided on both the upper and lower sides of the sleeve rod 54 so that when the sleeve block 85 moves, both sets of vertical plates 42 can be adjusted simultaneously, thereby simultaneously driving both sets of vertical plates 42 to move. Furthermore, because the inner block 8 rotates in conjunction with the sleeve rod 54, when the sleeve rod 54 rotates to adjust the position of the vertical plate 42, the inner block 8 can rotate relative to the sleeve rod 54 and remain stationary, avoiding interference with the rotation of the sleeve rod 54.

[0057] Reference Figure 9 , Figure 10 Sleeve 1 84 and sleeve 2 85 are set between inner block 1 8 and inner block 2 82. The rotation surface of connecting rod 1 86 is perpendicular to the rotation surface of connecting rod 2 83 to avoid mutual interference between sleeve 2 85 and inner block 2 82 and between connecting rod 1 86 and connecting rod 2 83. This allows the positions of horizontal plate 41 and vertical plate 42 to be adjusted sequentially, and multiple structures do not interfere with each other.

[0058] Reference Figure 11 , Figure 12 The horizontal plate 41 includes a receiving part 412 and an abutting part 413. The receiving part 412 is slidably assembled in the groove 21, and the abutting part 413 is slidably assembled on the receiving part 412. A relief groove 414 is provided on the side of the receiving part 412 near the abutting part 413. An intermediate plate 415 is provided on the side of the abutting part 413 near the receiving part 412. The intermediate plate 415 is located in the relief groove 414. A spring 416 is provided on the intermediate plate 415. The spring 416 is a spring and is arranged in a vertical direction. Both ends of the spring 416 are connected to the inner wall of the intermediate plate 415 and the relief groove 414, respectively.

[0059] The receiving part 412 moves, causing the abutting part 413 to abut against the inner wall of the positioning groove 62. When the abutting part 413 abuts against the inner wall of the positioning groove 62, the abutting part 413 moves completely to the outside of the sliding groove 21, meaning that the abutting part 413 can slide relative to the receiving part 412 at this time. After the horizontal plate 41 abuts against the positioning groove 62, the vertical plate 42 is driven to abut against the inner wall of the positioning groove 62. When the vertical plate 42 engages with the inner wall of the positioning groove 62, it will drive the connecting part 6 to move in the vertical direction to adjust its position. During the adjustment process, the abutting part 413 will move with the connecting part 6, meaning that the abutting part 413 will move relative to the receiving part 412 until both vertical plates 42 abut against the inner wall of the positioning groove 62. By setting the abutting part 413 and the receiving part 412 to slide against each other, the phenomenon of interference between the vertical plate 42 and the inner wall of the positioning groove 62 after the abutting part 413 abuts against the inner wall of the positioning groove 62 is avoided. Furthermore, a spring 416 is provided so that after assembly, the abutment part 413 separates from the inner wall of the positioning groove 62, and the spring 416 can drive the abutment part 413 to move to the initial position so as to perform the next auxiliary positioning operation.

[0060] Reference Figure 11 There are two springs 416, and the two springs 416 are respectively located on the upper and lower sides of the middle plate 415. The two springs 416 are always in a compressed state so that after the abutting part 413 separates from the inner wall of the positioning groove 62, the abutting part 413 is moved to the initial position.

[0061] Reference Figure 5 Two sets of guide plates 9 are provided on the inner wall of the positioning groove 62. These two sets of guide plates 9 correspond to the horizontal sides of the positioning rod 2, with each set consisting of two guide plates 9 spaced apart along the length of the positioning rod 2. The gap between the two guide plates 9 corresponds to the horizontal plate 41. After the positioning rod 2 is fully inserted into the positioning groove 62, the horizontal plate 41 is positioned between the two guide plates 9. A guide ramp is provided on the side of each guide plate 9 closest to it. When the horizontal plate 41 moves away from the positioning rod 2, it can move between the two guide plates 9 via the guide ramp. After the horizontal plate 41 moves between the two guide plates 9, the distance between the baffle 71 and the positioning sleeve 7 is the same as the distance between the steel box girder segment 02 and the steel box girder body 01. This ensures that after the baffle 71 abuts against the positioning sleeve 7, the steel box girder segment 02 and the steel box girder body 01 are aligned, achieving their positioning.

[0062] Reference Figure 9Slide rails 422 are provided on the side of the horizontal plate 41 and the vertical plate 42 near the positioning rod 2. Slider 1 421 is slidably assembled in the slide rail 422, and slider 2 411 is also slidably assembled in the corresponding slide rail 422. That is, slider 1 421 cooperates with the vertical plate 42 through the slide rail 422, and slider 2 411 is slidably cooperates with the horizontal plate 41 through the slide rail 422. Since inner block 2 82 and sleeve block 2 85 are moving, inner block 1 8 and sleeve block 1 84 are fixed. Therefore, slider 1 421 and slider 2 411 will move with the rotation of connecting rod 1 86 or connecting rod 2 83. By setting slide rails 422, the position of slider 1 421 and slider 2 411 is restricted to ensure the stability of slider 1 421 and slider 2 411 when they move.

[0063] Reference Figure 9 A telescopic rod 91 is provided between two vertical plates 42 to connect them, and a telescopic rod 92 is provided between two horizontal plates 41 to connect them. The telescopic rod 91 is set perpendicular to the vertical plates 42, and the telescopic rod 92 is set perpendicular to the horizontal plates 41. That is, the telescopic rod 91 is set perpendicular to the telescopic rod 92. The telescopic rod 91 and the telescopic rod 92 have the same structure, both being telescopic rod structures. The telescopic rod 91 is used to ensure the stability between the two vertical plates 42, and the telescopic rod 92 is used to ensure the stability between the horizontal plates 41.

[0064] The implementation principle of this invention is as follows: After the crane body 1 moves the connecting part 6 to the same height as the positioning rod 2, the crane body 1 moves the connecting part 6 closer to the positioning rod 2, so that the positioning rod 2 is inserted into the positioning groove 62. Then, motor 1 51 and motor 2 52 successively move the inner rod 53 and the sleeve rod 54, so that the horizontal plate 41 and the vertical plate 42 abut against the inner wall of the positioning groove 62, so that the center line of the positioning groove 62 and the center line of the positioning rod 2 are on the same straight line. At this time, the steel box girder segment 02 and the steel box girder body 01 are aligned in the horizontal direction. Then, the pushing member 3 drives the positioning rod 2 to move. The positioning rod 2 drives the connecting part 6 to move through the vertical plate 42 and the horizontal plate 41. At the same time, the crane body 1 cooperates to drive synchronously until the baffle 71 abuts against the end of the positioning sleeve 7. At this time, the end of the steel box girder segment 02 and the end of the steel box girder body 01 are aligned, and the positioning of the two is completed, so as to carry out subsequent installation.

[0065] By setting a vertical plate 42 and a horizontal plate 41 on the side of the positioning rod 2 to cooperate with the positioning groove 62, the swaying of the steel box girder segment 02 is reduced during the hoisting process that moves the steel box girder segment 02 close to the steel box girder body 01. At the same time, the steel box girder segment 02 can be positioned in the horizontal direction to facilitate subsequent assembly and improve assembly efficiency.

[0066] The present invention also discloses a bridge deck construction method, which uses the above-mentioned bridge deck construction crane.

[0067] A bridge deck construction method includes the following steps: S1, move the crane body 1 so that the end of the positioning sleeve 7 is flush with the end of the steel box girder body 01 in the vertical direction; S2, connect the lifting device 11 to the steel box girder section 02, and the crane body 1 lifts the steel box girder section 02 upward. After the connecting part 6 moves to the same height as the positioning rod 2, it drives the connecting part 6 to approach the positioning rod 2 until the positioning rod 2 is inserted into the positioning groove 62. S3, the driving component 5 drives the positioning plate 4 to move to cooperate with the inner wall of the positioning groove 62; S4, the pusher 3 drives the positioning rod 2 to move, and at the same time the crane body 1 drives the connecting part 6 to move synchronously with the positioning rod 2. After the baffle 71 abuts against the positioning sleeve 7, the positioning rod 2 and the connecting part 6 both stop moving, and the steel box girder section 02 is assembled.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A crane for bridge deck construction, comprising a crane body located above a steel box girder, the crane body including lifting devices for lifting steel box girder segments, characterized in that, The crane body is equipped with a positioning assembly, which includes: a positioning rod horizontally slidably mounted on the crane body, a pushing component connected to the positioning rod, multiple positioning plates slidably mounted on the side of the positioning rod, and a driving component connected to the positioning plates. The lifting device includes a connecting part, on which a positioning groove is horizontally opened facing the positioning rod for the positioning rod to be inserted. After the connecting part and the positioning rod are at the same height, the connecting part is moved by the lifting device to insert the positioning rod into the positioning groove. Then, the driving component drives the multiple positioning plates to move until they all abut against the inner wall of the positioning groove, so that the center lines of the positioning rod and the positioning groove are on the same straight line to position the steel box girder segment. Then, the pushing component drives the steel box girder segment closer to the steel box girder body through the positioning rod and the connecting part.

2. The bridge deck construction crane according to claim 1, characterized in that, The crane body is equipped with a positioning sleeve, and the positioning rod is slidably assembled in the positioning sleeve. The end of the positioning sleeve is flush with the steel box girder in the vertical direction. A baffle is provided on the positioning rod. After the positioning rod is inserted into the positioning groove, the distance between the baffle and the positioning sleeve is the same as the distance between the steel box girder and the steel box girder segment.

3. The bridge deck construction crane according to claim 1, characterized in that, The positioning rod has a groove on its side for installing the positioning plate. The positioning plate includes a horizontal plate and a vertical plate. There are two sets of both the horizontal and vertical plates. There are two horizontal plates located on the horizontal sides of the positioning rod, and two vertical plates located on the upper and lower sides of the positioning rod. The horizontal plate slides on the positioning rod in the horizontal direction, and the vertical plate slides on the positioning rod in the vertical direction.

4. The bridge deck construction crane according to claim 3, characterized in that, The driving components include: Motor 1 and Motor 2 rotate the inner rod assembled inside the positioning rod and rotate the sleeve rod sleeved outside the inner rod. The output end of Motor 1 is connected to the inner rod, and the output end of Motor 2 is connected to the sleeve rod. When Motor 1 drives the inner rod to rotate, it controls the movement of the horizontal plate. When Motor 2 drives the sleeve rod to rotate, it controls the movement of the vertical plate.

5. The bridge deck construction crane according to claim 4, characterized in that, The sleeve rod is externally rotatably equipped with a sleeve block 1 and an inner block 1, and slidably equipped with a sleeve block 2. The sleeve rod has a threaded groove 1 that is threadedly engaged with the sleeve block 2. A slider 1 is slidably mounted on the vertical plate along the length of the sleeve rod. The slider 1 is located in the middle of the sleeve block 1 and the sleeve block 2. A connecting rod 1 is rotatably mounted between the sleeve block 1 and the slider 1, and between the sleeve block 2 and the slider 1. The inner rod is externally slidably equipped with an inner block 2. The inner rod has a threaded groove 2 that is threadedly engaged with the inner block 2. A slider 2 is slidably mounted on the horizontal plate along the length of the inner rod. The slider 2 is located in the middle of the inner block 2 and the inner block 1. A connecting rod 2 is rotatably mounted between the inner block 1 and the slider 2, and between the inner block 2 and the slider 2.

6. The bridge deck construction crane according to claim 5, characterized in that, Sleeve 1 and Sleeve 2 are positioned between Inner Block 1 and Inner Block 2, and the rotation surface of Link 1 is perpendicular to the rotation surface of Link 2.

7. The bridge deck construction crane according to claim 4, characterized in that, The horizontal plate includes: a receiving part that is slidably assembled in the slide groove, and an abutting part that is slidably assembled in the receiving part. A relief groove is provided on the side of the receiving part near the abutting part. An intermediate plate is provided on the side of the abutting part near the receiving part. A spring is provided on the intermediate plate that connects to the inner wall of the relief groove. When the abutting part abuts against the side wall of the positioning groove, it moves completely to the outside of the slide groove.

8. The bridge deck construction crane according to claim 4, characterized in that, Two sets of guide plates are spaced apart on the inner wall of the positioning groove. The two sets of guide plates correspond to the horizontal sides of the positioning rod respectively. Each set consists of two guide plates spaced apart along the length of the positioning rod. The gap between the two guide plates corresponds to the horizontal plate. A guide slope is provided on the side of the two guide plates that is close to each other. The horizontal plate moves between the two guide plates through the guide slope.

9. The bridge deck construction crane according to claim 3, characterized in that, A telescopic rod 1 is installed between the two vertical plates to connect them, and a telescopic rod 2 is installed between the two horizontal plates to connect them.

10. A bridge deck construction method, employing the bridge deck construction crane as described in claim 2, characterized in that, Includes the following steps: Move the crane body so that the end of the positioning sleeve is vertically aligned with the end of the steel box girder. Connect the lifting device to the steel box girder segment, and the crane body lifts the steel box girder segment upward. After the connecting part moves to the same height as the positioning rod, it drives the connecting part to approach the positioning rod until the positioning rod is inserted into the positioning groove. The driving component moves the positioning plate to engage with the inner wall of the positioning groove. The pusher moves the positioning rod, and at the same time, the crane body moves the connecting part and the positioning rod synchronously. After the baffle and the positioning sleeve come into contact, the positioning rod and the connecting part stop moving, and the steel box girder segment is assembled.

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