A crane for bridge construction and a method of construction thereof

Abstract

The present application relates to the technical field of bridge deck crane, and specifically discloses a crane for bridge deck construction and a construction method thereof, which comprises a crane body and a lifting appliance, and is characterized in that the crane body is provided with a positioning assembly, the positioning assembly comprises a positioning rod horizontally and slidingly assembled on the crane body, a pushing piece connected with the positioning rod, a plurality of positioning plates slidingly assembled on the side of the positioning rod, and a driving piece connected with the positioning plates; the lifting appliance comprises a connecting portion, and the connecting portion is provided with a positioning groove; after the connecting portion and the positioning rod are located at the same height, the connecting portion is moved by the lifting appliance to insert the positioning rod into the positioning groove, then the driving piece drives the plurality of positioning plates to move to abut against the inner wall of the positioning groove to position the steel box girder segment, and then the pushing piece drives the steel box girder segment to approach the steel box girder body through the positioning rod and the connecting portion; the crane for bridge deck construction and the construction method thereof have the effect of improving the assembly efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge deck cranes, in particular to a crane for bridge deck construction and a construction method thereof. BACKGROUND

[0002] In bridge construction, structures such as steel box girders, precast girder segments, and main girder of cable-stayed bridges often need to be spliced in multiple parts. The crane is an important equipment in bridge deck construction, which is mainly used to hoist heavy components to the designated position for subsequent installation.

[0003] The patent document with publication number CN212315387U discloses a bridge deck crane, which includes a rack, a fixed pulley, a movable pulley, a traction drive device, and a rigging. The fixed pulley is rotatably arranged at one end of the top of the rack, and the movable pulley is arranged directly below the fixed pulley. The traction drive device is arranged at a predetermined distance from the other end of the rack. The traction drive device has a traction rope, which is wound around the fixed pulley and the movable pulley. The traction rope drives the rotation of the fixed pulley and the movable pulley to achieve the lifting movement of the movable pulley. When the movable pulley rises to the position where it abuts the fixed pulley, the traction rope is clamped to drive the rack to slide. The rigging is arranged on the pulley seat of the movable pulley.

[0004] By setting the rack, fixed pulley, movable pulley, traction drive device, and rigging in cooperation, the traction rope of the traction drive device can drive the rotation of the fixed pulley and the movable pulley to achieve the lifting movement of the movable pulley. By arranging the rigging on the pulley seat of the movable pulley, the rope of the hoisted object is fixed, thereby driving the hoisted object to rise and fall. When the movable pulley rises to the position where it abuts the fixed pulley, the traction rope is clamped to drive the rack to slide. The traction drive device achieves the lifting movement of the hoisted object and the sliding of the rack.

[0005] However, the following problems still exist in this scheme. When hoisting and constructing the steel box girder, multiple steel box 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 through the traction rope and the rigging, and then positions and fixes the steel box girder. However, due to the action of the traction rope or external wind force, the hoisted steel box girder will inevitably move in the vertical or horizontal direction when it is hoisted, which will cause shaking and affect the positioning and assembly efficiency. SUMMARY

[0006] The present application provides a crane for bridge deck construction and a construction method thereof, aiming to solve the problem of easy shaking during hoisting of the steel box girder in related technologies.

[0007] In a first aspect, the present application provides a bridge construction crane, comprising a crane body located above a steel box girder body, the crane body comprising a lifting device for lifting a steel box girder section, the crane body being provided with a positioning assembly, the positioning assembly comprising: a positioning rod horizontally slidingly assembled on the crane body, a pushing member connected to the positioning rod, a plurality of positioning plates slidingly assembled on the side of the positioning rod, and a driving member connected to the positioning plates; the lifting device comprising a connecting portion, the connecting portion being provided with a positioning groove horizontally formed towards the positioning rod for inserting the positioning rod; after the connecting portion and the positioning rod are located at the same height, the connecting portion is moved by the lifting device to insert the positioning rod into the positioning groove, then the driving member drives the plurality of positioning plates to move to abut against the inner wall of the positioning groove, so that the center lines of the positioning rod and the positioning groove are located on the same straight line to position the steel box girder section, then the pushing member drives the steel box girder section to approach the steel box girder body through the positioning rod and the connecting portion.

[0008] The effect is that the positioning rod and the positioning plates cooperate with the connecting portion to assist in supporting and positioning the steel box girder section, thereby eliminating the negative effects of shaking. Specifically, after the connecting portion is moved to the same height as the positioning rod, the crane body drives the connecting portion to move close to the positioning rod, so that the positioning rod is inserted into the positioning groove, then the driving member drives the positioning plates to move close to the side wall of the positioning groove, after the plurality of 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 located on the same straight line, thereby achieving the support of the connecting portion by the positioning rod, making the steel box girder section more stable, avoiding the phenomenon of shaking, and the plurality of positioning plates abutting against the inner wall of the positioning groove aligns the steel box girder section with the steel box girder body in the horizontal direction, so as to position the steel box girder section after the pushing member drives it to move to align with the steel box girder body, thereby improving the subsequent assembly efficiency.

[0009] Preferably, the crane body is provided with a positioning sleeve, the positioning rod is slidingly assembled in the positioning sleeve, the end of the positioning sleeve is flush with the steel box girder body in the vertical direction, and the positioning rod is provided with a baffle; 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 body and the steel box girder section.

[0010] The effect is that after the positioning rod is completely 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 section and the steel box girder body, and when the pushing member drives the positioning rod to move, the baffle and the positioning sleeve abut against each other to stop moving, so as to judge the moving distance of the positioning rod.

[0011] Preferably, the side surface of the positioning rod is provided with a sliding groove for mounting the positioning plates, the positioning plates comprise horizontal plates and vertical plates, the horizontal plates and the vertical plates are provided with two groups, the horizontal plates are provided with two and located on the horizontal sides of the positioning rod respectively, the vertical plates are provided with two and located on the upper and lower sides of the positioning rod respectively, the horizontal plates slide on the positioning rod in the horizontal direction, and the vertical plates slide on the positioning rod in the vertical direction.

[0012] The effect is that the horizontal plate corrects the connecting part in the horizontal direction, and the vertical plate corrects the connecting part in the vertical direction.

[0013] Preferably, the driving member comprises: a motor one, a motor two, an inner rod rotatably arranged in the positioning rod, and a sleeve rod rotatably arranged outside the inner rod, the output end of the motor one is connected with the inner rod, the output end of the motor two is connected with the sleeve rod, the motor one drives the inner rod to rotate to control the horizontal plate to move, and the motor two drives the sleeve rod to rotate to control the vertical plate to move.

[0014] Preferably, the sleeve rod is rotatably arranged with a sleeve block one and an inner block one outside, and is slidably arranged with a sleeve block two, the sleeve rod is provided with a threaded groove one outside which is threadedly matched with the sleeve block two, the vertical plate is slidably arranged with a sliding block one along the length direction of the sleeve rod, the sliding block one is located at the middle of the sleeve block one and the sleeve block two, and a connecting rod one is rotatably arranged between the sleeve block one and the sliding block one and between the sleeve block two and the sliding block one; the inner rod is slidably arranged with an inner block two outside, the inner rod is provided with a threaded groove two outside which is threadedly matched with the inner block two, the horizontal plate is slidably arranged with a sliding block two along the length direction of the inner rod, the sliding block two is located at the middle of the inner block two and the inner block one, and a connecting rod two is rotatably arranged between the inner block one and the sliding block two and between the inner block two and the sliding block two.

[0015] The effect is that the inner rod drives the inner block two to move close to the inner block one, the inner block one drives the connecting rod two to rotate, the connecting rod two drives the horizontal plate to move, and the position of the horizontal plate is adjusted. Similarly, the sleeve rod drives the sleeve block two to move close to the sleeve block one, the connecting rod one drives the vertical plate to move, and the position of the vertical plate is adjusted, so as to adjust the connecting part in the horizontal and vertical directions respectively.

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

[0017] The effect is to avoid the mutual interference of the connecting rod one and the connecting rod two, and to ensure the stability of the operation of multiple structures.

[0018] Preferably, the horizontal plate comprises: a receiving part slidably arranged in a sliding groove, and an abutting part up and down slidably arranged in the receiving part, the receiving part is provided with a gap groove on the side close to the abutting part, the abutting part is provided with an intermediate plate on the side close to the receiving part, the intermediate plate is provided with an elastic member connected with the inner wall of the gap groove, and the abutting part is completely moved to the outside of the sliding groove when abutting with the side wall of the positioning groove.

[0019] Preferably, two groups of guide plates are arranged on the inner wall of the positioning groove at intervals, and the two groups of guide plates correspond to the horizontal two sides of the positioning rod respectively, each group of two guide plates arranged at intervals along the length direction of the positioning rod is a group, the gap between the two guide plates corresponds to the horizontal plate, and the side close to each other of the two guide plates is provided with a guide inclined surface, and the horizontal plate is moved to between the two guide plates through the guide inclined surface.

[0020] Preferably, a telescopic rod two connecting the two horizontal plates is arranged between the two horizontal plates.

[0021] In the second aspect, the present application provides a bridge deck construction method, which adopts the bridge deck construction crane, and comprises the following steps:

[0022] The crane body is moved so that the end of the positioning sleeve is flush with the end of the steel box girder body in the vertical direction;

[0023] The lifting appliance is connected with the steel box girder segment, the crane body hoists the steel box girder segment to move upward, after the connecting part moves to the same height as the positioning rod, the connecting part is driven to move close to the positioning rod until the positioning rod is inserted into the positioning groove;

[0024] The driving part drives the positioning plate to move to cooperate with the inner wall of the positioning groove;

[0025] The pushing part drives the positioning rod to move, and at the same time, the crane body drives the connecting part to move synchronously with the positioning rod, after the baffle abuts against the positioning sleeve, the positioning rod and the connecting part both stop moving, and the steel box girder segment is assembled.

[0026] Its effect lies in that before the steel box girder segment is moved to cooperate with the steel box girder body, the positioning rod is first cooperated with the positioning groove on the connecting part, and under the auxiliary action of the positioning rod, the influence of the sway of the steel wire rope is eliminated, so that subsequent positioning is facilitated, and the assembly efficiency is improved.

[0027] Beneficial effects:

[0028] The present application cooperates the positioning rod with the positioning groove on the connecting part, and after the positioning rod is inserted into the positioning groove, the multiple positioning plates are moved to abut against the positioning groove in multiple directions, so that the center line of the positioning groove is on the same straight line as the center line of the positioning rod, the connecting part is supported by the positioning plate, the position of the steel box girder segment is corrected while the sway of the steel box girder segment is reduced, so that subsequent assembly is facilitated, and the assembly efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0030] Figure 2 It is a schematic diagram of the local structure in the present application.

[0031] Figure 3is a structural schematic view of the positioning sleeve and the baffle in the application.

[0032] Figure 4 is a partial explosion schematic view of the positioning rod and the connecting part in the application.

[0033] Figure 5 is a cooperation schematic view of the positioning rod and the positioning groove in the application.

[0034] Figure 6 is a schematic view of the internal structure of the positioning rod in the application.

[0035] Figure 7 is Figure 6 a structural schematic view at A in the application.

[0036] Figure 8 is Figure 6 a structural schematic view at B in the application.

[0037] Figure 9 is a structural schematic view of the positioning plate in the application.

[0038] Figure 10 is a structural schematic view of the inner rod and the sleeve rod in the application.

[0039] Figure 11 is a sectional view of the horizontal plate in the application.

[0040] Figure 12 is Figure 11 a sectional view of the A-A section in the application.

[0041] Reference signs:

[0042] 01, steel box girder body; 02, steel box girder section; 1, crane body; 11, lifting appliance; 12, steel wire rope; 2, positioning rod; 21, sliding groove; 3, pushing piece; 4, positioning plate; 41, horizontal plate; 411, sliding block two; 412, receiving part; 413, abutting part; 414, accommodation groove; 415, intermediate plate; 416, elastic piece; 42, vertical plate; 421, sliding block one; 422, sliding rail; 5, driving piece; 51, motor one; 52, motor two; 53, inner rod; 531, threaded groove two; 54, sleeve rod; 541, threaded groove one; 6, connecting part; 61, lifting hook; 62, positioning groove; 7, positioning sleeve; 71, baffle; 72, linkage rod; 73, driving rod one; 74, driving 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 DESCRIPTION

[0043] Embodiments of the present application are described in detail below with reference to examples shown in the attached drawings. The embodiments described below by way of example with reference to the attached drawings are intended to be illustrative and are not understood to limit the present application.

[0044] The application discloses a crane for bridge deck construction.

[0045] With reference to Figures 1 to 12 , the crane for bridge deck construction comprises a lifting device 11 installed on a crane body 1, the lifting device 11 is connected with the crane body 1 through a steel wire rope 12, the crane body 1 is located above a steel box girder body 01, and the lifting device 11 is used for lifting a steel box girder segment 02, wherein the steel box girder body 01 is spliced by a plurality of steel box girder segments 02. After the lifting device 11 is connected with the steel box girder segment 02, the crane body 1 drives the lifting device 11 and the steel box girder segment 02 to move upwards to the same height as the steel box girder body 01 through the steel wire rope 12, then moves the steel box girder segment 02 horizontally to be close to the steel box girder body 01, and finally fixes the steel box girder segment 02 and the steel box girder body 01.

[0046] A positioning assembly is arranged on the crane body 1, and when the steel box girder segment 02 is close to the steel box girder body 01, the positioning assembly is used for positioning, so that the steel box girder segment 02 is aligned with the end of the steel box girder body 01, and subsequent assembly is facilitated.

[0047] With reference to Figure 2 , Figure 3 , Figure 4 , the positioning assembly comprises a positioning rod 2, a pushing piece 3, a positioning plate 4 and a driving piece 5, the positioning rod 2 slides horizontally on the crane body 1, the pushing piece 3 is a pneumatic cylinder, an output end of the pushing piece 3 is connected with the positioning rod 2, so as to drive the positioning rod 2 to move on the crane body 1, a plurality of positioning plates 4 are arranged on the side of the positioning rod 2, and the plurality of positioning plates 4 are slidably arranged on the positioning rod 2, and the driving piece 5 is connected with the positioning plate 4, so as to drive the positioning plate 4 to slide relative to the positioning rod 2.

[0048] With reference to Figure 1 , Figure 2 , the lifting device 11 comprises a connecting portion 6 and two lifting hooks 61 located at the bottom of the connecting portion 6, the connecting portion 6 is arranged along the length direction of the steel box girder segment 02, a positioning groove 62 is arranged at one end of the connecting portion 6 close to the positioning rod 2, and the positioning groove 62 is arranged along the horizontal direction. The positioning groove 62 is used for inserting the positioning rod 2, and 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 portion 6 is close to the positioning rod 2, the positioning rod 2 can be inserted into the positioning groove 62.

[0049] At the beginning, the positioning plate 4 is flush with the side of the positioning rod 2, and the positioning plate 4 is in the retracted state. After the crane body 1 drives the steel box girder section 02 to move upwards to the same height as the steel box girder body 01, the connecting part 6 is also at the same height as the positioning rod 2, the connecting part 6 drives the steel box girder section 02 to move close to the steel box girder body 01, and the positioning rod 2 gradually inserts into the positioning groove 62. Then the driving part 5 drives the positioning plate 4 to move away from the positioning rod 2 and gradually expand. The driving part 5 drives the positioning plate 4 to abut against the inner wall of the positioning groove 62. After the multiple positioning plates 4 abut against the inner wall of the positioning groove 62, the center line of the positioning rod 2 is on the same straight line as the center line of the positioning groove 62, so that the steel box girder section 02 is aligned with the steel box girder body 01 in the horizontal direction. At the same time, the positioning rod 2 can support the steel box girder section 02 through the positioning plate 4 to reduce the phenomenon of shaking of the steel box girder section 02 and eliminate the instability phenomenon of the steel wire rope 12 during hoisting. Finally, the pushing part 3 drives the positioning rod 2 to move close to the steel box girder body 01, and the crane body 1 drives the connecting part 6 to move at the same time, until the steel box girder section 02 abuts against the steel box girder body 01, for subsequent installation.

[0050] Referring to Figure 1 , Figure 2 , Figure 3 , the positioning sleeve 7 is arranged on the crane body 1, the positioning rod 2 is slidingly assembled in the positioning sleeve 7, and the baffle 71 is arranged on the positioning rod 2. During construction, the crane body 1 is moved so that the front end of the positioning sleeve 7 is flush with the end of the steel box girder body 01 in the vertical direction. After the positioning rod 2 is completely inserted into the positioning groove 62, the distance between the baffle 71 and the end of the positioning sleeve 7 is the same as the distance between the steel box girder end and the steel box girder body 01. The pushing part 3 drives the positioning rod 2 to move, and after the baffle 71 abuts against the end of the positioning sleeve 7, the steel box girder section 02 abuts against the steel box girder body 01, and the positioning rod 2 stops moving, so as to judge the distance of the movement of the positioning rod 2.

[0051] Referring to Figure 2 , Figure 3 , Figure 4 , the two groups of connecting parts 6 are arranged in parallel, and are connected through multiple positions on the two connecting parts 6 and the steel box girder section 02, so as to ensure the stability of the steel box girder section 02 during hoisting. The two positioning rods 2 are correspondingly arranged with the two connecting parts 6, and the two positioning rods 2 are arranged in parallel. The linkage rod 72 is arranged between the two positioning rods 2, and the output end of the pushing part 3 is connected with the linkage rod 72. When the lifting appliance 11 drives the connecting part 6 to move horizontally, the two groups of positioning rods 2 are respectively inserted into the two connecting parts 6 to assist in positioning the steel box girder section 02.

[0052] Referring to Figure 4 , the sliding grooves 21 are arranged on the side of the positioning rod 2, and multiple sliding grooves 21 are arranged on the upper and lower sides and the left and right sides of the positioning rod 2.

[0053] Referring toFigure 5 、 Figure 9 The positioning plate 4 comprises horizontal plates 41 and vertical plates 42, the horizontal plates 41 and the vertical plates 42 are both provided in two groups, each two horizontal plates 41 form a group, each two vertical plates 42 form a group, each two horizontal plates 41 are respectively located on the horizontal two sides of the positioning rod 2, and each two vertical plates 42 are respectively arranged on the upper and lower two sides of the positioning rod 2, and the horizontal plates 41 and the vertical plates 42 are both slidingly assembled in the sliding groove 21, that is, the horizontal plates 41 slide in the horizontal direction in the sliding groove 21, and the vertical plates 42 slide in the vertical direction in the sliding groove 21.

[0054] The driving member 5 drives the horizontal plates 41 and the vertical plates 42 to slide to the inner wall of the positioning groove 62 in sequence, after the two horizontal plates 41 abut against the inner wall of the positioning groove 62, the steel box girder section 02 is aligned with the steel box girder body 01 in the horizontal direction, and after the two vertical plates 42 abut against the inner wall of the positioning groove 62, the steel box girder section 02 is aligned with the steel box girder body 01 in the vertical direction.

[0055] In order to facilitate the alignment of the steel box girder section 02 with the steel box girder body 01 in the vertical direction, when the steel box girder section 02 is hoisted, the height of the steel box girder section 02 is slightly lower than that of the steel box girder body 01, and during the abutting of the vertical plates 42 and the positioning groove 62, the height of the connecting part 6 is appropriately raised, so that the two vertical plates 42 abut against the inner wall of the positioning groove 62, and the steel box girder section 02 is aligned with the steel box girder body 01 in the vertical direction.

[0056] Referring to Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 The driving member 5 comprises a motor one 51, a motor two 52, an inner rod 53 and a sleeve rod 54, the inner rod 53 and the sleeve rod 54 are both rotationally assembled in the positioning rod 2, and the sleeve rod 54 rotationally sleeves the outer portion of the inner rod 53, the center line of the inner rod 53 is located on the same straight line as the center line of the positioning rod 2, the output end of the motor one 51 is connected with the inner rod 53, the output end of the motor two 52 is connected with the sleeve rod 54, and the motor one 51 and the motor two 52 are arranged on the linkage rod 72. The end portion of the inner rod 53 extends out of the outer portion of the sleeve rod 54, a driving rod one 73 is arranged between the inner rods 53 in the two positioning rods 2, that is, the driving rod one 73 is arranged perpendicular to the inner rods 53 in the two positioning rods 2, the two ends of the driving rod one 73 are both provided with a bevel gear set one 75, and the driving rod one 73 is connected with the two inner rods 53 through the bevel gear set one 75.

[0057] Referring to 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] The abutting portion 413 moves to abut against the inner wall of the positioning groove 62, and when the abutting portion 413 abuts against the inner wall of the positioning groove 62, the abutting portion 413 is completely moved to the outside of the sliding groove 21, that is, at this time, the abutting portion 413 can slide relative to the receiving portion 412. 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. Since the vertical plate 42 cooperates with the inner wall of the positioning groove 62, the connecting portion 6 is moved in the vertical direction to adjust the position, and in the adjusting process, the abutting portion 413 moves with the connecting portion 6, that is, the abutting portion 413 moves relative to the receiving portion 412, until the two vertical plates 42 abut against the inner wall of the positioning groove 62. By setting the sliding cooperation between the abutting portion 413 and the receiving portion 412, the phenomenon that the abutting portion 413 interferes with the cooperation between the vertical plate 42 and the inner wall of the positioning groove 62 after abutting against the inner wall of the positioning groove 62 is avoided. The elastic member 416 is arranged, after assembly is completed, the abutting portion 413 is separated from the inner wall of the positioning groove 62, and the elastic member 416 can drive the abutting portion 413 to move to the initial position, so as to facilitate the next auxiliary positioning operation.

[0066] With reference to Figure 11 The elastic member 416 is arranged, after assembly is completed, the abutting portion 413 is separated from the inner wall of the positioning groove 62, and the elastic member 416 can drive the abutting portion 413 to move to the initial position, so as to facilitate the next auxiliary positioning operation.

[0067] With reference to Figure 5 Two groups of guide plates 9 are arranged on the inner wall of the positioning groove 62, and the two groups of guide plates 9 correspond to the horizontal sides of the positioning rod 2 respectively. Each two guide plates 9 form a group, and the two guide plates 9 are arranged in the length direction of the positioning rod 2, that is, the gap between the two guide plates 9 corresponds to the horizontal plate 41, and after the positioning rod 2 is completely inserted into the positioning groove 62, the horizontal plate 41 is located between the two guide plates 9. The guide inclined surfaces are arranged on the sides close to each other of the two guide plates 9, and when the horizontal plate 41 moves away from the positioning rod 2, the horizontal plate 41 can move to between the two guide plates 9 through the guide inclined surfaces. After the horizontal plate 41 moves to 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. So that after the baffle 71 abuts against the positioning sleeve 7, the steel box girder segment 02 is aligned with the steel box girder body 01, and the positioning of the two is realized.

[0068] With reference to Figure 9The horizontal plate 41 and the vertical plate 42 are provided with sliding rails 422 on the side close to the positioning rod 2, and sliding blocks one 421 are slidingly assembled in the sliding rails 422, and sliding blocks two 411 are also slidingly assembled in the corresponding sliding rails 422, that is, the sliding blocks one 421 are slidingly matched with the vertical plate 42 through the sliding rails 422, and the sliding blocks two 411 are slidingly matched with the horizontal plate 41 through the sliding rails 422. Since the inner block two 82 and the sleeve block two 85 move, the inner block one 8 and the sleeve block one 84 are fixed, so the sliding blocks one 421 and the sliding blocks two 411 move with the rotation of the connecting rod one 86 or the connecting rod two 83, and the sliding rails 422 are arranged to limit the positions of the sliding blocks one 421 and the sliding blocks two 411, so that the stability of the sliding blocks one 421 and the sliding blocks two 411 during movement is ensured.

[0069] Referring to Figure 9 The two vertical plates 42 are provided with a telescopic rod one 91 connecting the two, and the two horizontal plates 41 are provided with a telescopic rod two 92 connecting the two, the telescopic rod one 91 is perpendicular to the vertical plate 42, and the telescopic rod two 92 is perpendicular to the horizontal plate 41, that is, the telescopic rod one 91 is perpendicular to the telescopic rod two 92, the telescopic rod one 91 and the telescopic rod two 92 are the same structure, which are rod-shaped structures that can be telescoped, the telescopic rod one 91 is used to ensure the stability between the two vertical plates 42, and the telescopic rod two 92 is used to ensure the stability between the horizontal plates 41.

[0070] The implementation principle of the present application is that after the connecting part 6 is driven by the crane body 1 to move to the same height as the positioning rod 2, the connecting part 6 is driven by the crane body 1 to be close to the positioning rod 2, so that the positioning rod 2 is inserted into the positioning groove 62, then the inner rod 53 and the sleeve rod 54 are driven by the motor one 51 and the motor two 52 in sequence to move, so that the horizontal plate 41 and the vertical plate 42 are in abutment with 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 located on the same straight line, at this time, the steel box girder section 02 is aligned with the steel box girder body 01 in the horizontal direction, then the pusher 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, and the crane body 1 is driven synchronously, until the baffle 71 is in abutment with the end of the positioning sleeve 7, at this time, the steel box girder section 02 is aligned with the end of the steel box girder body 01, and the positioning of the two is completed, so as to facilitate subsequent installation.

[0071] By arranging the vertical plate 42 and the horizontal plate 41 on the side of the positioning rod 2 to cooperate with the positioning groove 62, the phenomenon of shaking of the steel box girder section 02 is reduced during the process of lifting the steel box girder section 02 close to the steel box girder body 01, and the steel box girder section 02 can be positioned in the horizontal direction, so as to facilitate subsequent assembly and improve the assembly efficiency.

[0072] The present application also discloses a bridge deck construction method, which adopts the above-mentioned bridge deck construction crane.

[0073] A bridge deck construction method comprises the following steps:

[0074] S1, the mobile crane body 1 is moved 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;

[0075] S2, the lifting appliance 11 is connected with the steel box girder segment 02, the crane body 1 lifts the steel box girder segment 02 upward, after the connecting part 6 moves to the same height as the positioning rod 2, the connecting part 6 is driven to move close to the positioning rod 2 until the positioning rod 2 is inserted into the positioning groove 62;

[0076] S3, the driving part 5 drives the positioning plate 4 to move to cooperate with the inner wall of the positioning groove 62;

[0077] S4, the pushing part 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 segment 02 is assembled.

[0078] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A deck builder crane comprising a crane body located above a steel box girder body, the crane body comprising a spreader for hoisting a steel box girder segment, characterised in that, The crane body is provided with a positioning assembly, which comprises a positioning rod horizontally slidingly assembled on the crane body, a pushing piece connected with the positioning rod, a plurality of positioning plates slidingly assembled on the side of the positioning rod, and a driving piece connected with the positioning plates; the lifting appliance comprises a connecting portion, and a positioning groove for inserting the positioning rod is horizontally formed on the connecting portion towards the positioning rod; after the connecting portion and the positioning rod are located at the same height, the connecting portion is moved by the lifting appliance to insert the positioning rod into the positioning groove, then the driving piece drives the plurality of positioning plates to move to abut against the inner wall of the positioning groove, so that the center lines of the positioning rod and the positioning groove are located on the same straight line to position the steel box girder segment, and then the pushing piece drives the steel box girder segment to approach the steel box girder body through the positioning rod and the connecting portion; A sliding groove for mounting the positioning plates is formed on the side of the positioning rod, and the positioning plates comprise horizontal plates and vertical plates; the horizontal plates and the vertical plates are both provided in two groups; the horizontal plates are provided in two groups and are located on the horizontal two sides of the positioning rod respectively; the vertical plates are provided in two groups and are located on the upper and lower two sides of the positioning rod respectively; the horizontal plates slide in the horizontal direction on the positioning rod; and the vertical plates slide in the vertical direction on the positioning rod. The driving piece comprises a motor one, a motor two, an inner rod rotatingly assembled in the positioning rod, and a sleeve rod rotatingly sleeved outside the inner rod; the output end of the motor one is connected with the inner rod; the output end of the motor two is connected with the sleeve rod; the motor one drives the inner rod to rotate to control the horizontal plates to move; and the motor two drives the sleeve rod to rotate to control the vertical plates to move. The sleeve rod is rotatingly provided with a sleeve block one and an inner block one outside and slidingly provided with a sleeve block two; a threaded groove one screwing with the sleeve block two is formed on the outside of the sleeve rod; a sliding block one is slidingly arranged on the vertical plate along the length direction of the sleeve rod and located between the sleeve block one and the sleeve block two; and a connecting rod one is rotatingly arranged between the sleeve block one and the sliding block one and between the sleeve block two and the sliding block one; the inner block two is slidingly assembled on the outside of the inner rod; a threaded groove two screwing with the inner block two is formed on the outside of the inner rod; a sliding block two is slidingly arranged on the horizontal plate along the length direction of the inner rod and located between the inner block one and the inner block two; and a connecting rod two is rotatingly arranged between the inner block one and the sliding block two and between the inner block two and the sliding block two.

2. The deck builder crane of claim 1, wherein The positioning sleeve is arranged on the crane body, the positioning rod is slidingly assembled in the positioning sleeve, the end of the positioning sleeve is flush with the steel box girder body in the vertical direction, and the positioning rod is provided with a baffle; 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 body and the steel box girder segment.

3. The deck builder crane of claim 1, wherein The sleeve block one and the sleeve block two are arranged between the inner block one and the inner block two, and the rotating surface of the connecting rod one is perpendicular to the rotating surface of the connecting rod two.

4. The deck builder crane of claim 1, wherein The horizontal plate comprises a receiving portion slidingly assembled in the sliding groove, and an abutting portion slidingly assembled in the receiving portion; a gap groove is formed on the side of the receiving portion close to the abutting portion; an intermediate plate is arranged on the side of the abutting portion close to the receiving portion; an elastic piece is arranged on the intermediate plate and connected with the inner wall of the gap groove; and the abutting portion is completely moved to the outside of the sliding groove when the abutting portion abuts against the side wall of the positioning groove.

5. The deck builder crane of claim 1, wherein Two groups of guide plates are arranged on the inner wall of the positioning groove at intervals, and the two groups of guide plates correspond to the horizontal two sides of the positioning rod respectively, each group of two guide plates arranged at intervals along the length direction of the positioning rod is a group, the gap between the two guide plates corresponds to the horizontal plate, and the side close to each other of the two guide plates is provided with a guide inclined surface, and the horizontal plate is moved to between the two guide plates through the guide inclined surface.

6. The deck builder crane of claim 1, wherein The two vertical plates are provided with a telescopic rod one connecting the two vertical plates, and the two horizontal plates are provided with a telescopic rod two connecting the two horizontal plates.

7. A bridge deck construction method using the bridge deck construction crane according to claim 2, characterized by, The method comprises the following steps: Moving the crane body so that the end of the positioning sleeve is flush with the end of the steel box girder body in the vertical direction; Connecting the lifting tool with the steel box girder section, lifting the steel box girder section upward by the crane body, after the connecting part moves to the same height as the positioning rod, driving the connecting part to be close to the positioning rod until the positioning rod is inserted into the positioning groove; Driving the positioning plate to move to cooperate with the inner wall of the positioning groove by the driving part; Driving the positioning rod to move by the pushing part, and synchronously moving the connecting part with the positioning rod by the crane body, after the baffle abuts against the positioning sleeve, the positioning rod and the connecting part stop moving, and the steel box girder section is assembled.

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