Double-beam hoisting device and construction method

Abstract

A hoisting device has a main beam 1, possibly having two parallel cross-beams 1001, and a connecting beam 2, possibly having two parallel cross beams 201, and an overhead travelling crane 3 having a h

Description

TECHNICAL FIELD

[0001] This application relates to the technical field of installing prefabricated members, in particular to a double-beam hoisting device and a construction method. BACKGROUND

[0002] A bridge erecting machine is a device for placing prefabricated beam pieces onto prefabricated piers. During construction of harbors, shores and wharfs, prefabricated members are generally placed onto the prefabricated piers by using the bridge erecting machine.

[0003] A bridge erecting machine of related technologies is generally designed to be a gantry structure comprising primarily a support rack, a main beam, and a trolley, wherein the support track is adaptive to support on the ground and provided with a power mechanism to drive the main beam to slide in a length direction of the wharf, wherein the trolley is adaptive to arrange on one side of the main beam and hoists prefabricated members; by wharf construction the prefabricated members are hoisted by means of the trolley, then the main beam is driven to slide by means of the power mechanism, in order to move the prefabricated members to a setting position in the length direction of the wharf, such that the prefabricated members are laid on corresponding piers.

[0004] Above bridge erecting machine is used to drive beams to be installed to slide in the length direction of the wharf, in order to lay and construct the prefabricated members in the length direction of the wharf. Position of the bridge erecting machine must be readjusted when the prefabricated members need to be laid and constructed in a direction perpendicular to the length direction of the wharf. Due to relative heavy weight of the bridge erecting machine, it is laborious and time-consuming to adjust the position of the bridge erecting machine, thereby affecting construction efficiency. SUMMARY

[0005] A double-beam hoisting device erected on a wharf and a construction and erection method for feeding beam in multi-direction is disclosed, in order to improve affection of construction efficiency because of necessity to adjust position of the bridge erecting machine by wharf construction.

[0006] In one aspect of the present disclosure, a double-beam hoisting device erected on a wharf utilizes the following technical solution:

[0007] A double-beam hoisting device erected on a wharf, comprising: a main beam comprising two mutually parallel crossbeams arranged opposite to each other, a connecting beam and an overhead travelling crane, wherein the main beam is supported on a pier through a travelling mechanism, the travelling mechanism is configured to drive the main beam to travel, the connecting beam is arranged on the main beam, the connecting beam is provided with a driving mechanism configured to drive the overhead travelling crane to slide, and the overhead travelling crane is provided with a hoisting mechanism to hoist a prefabricated member, the connecting beam comprises two mutually parallel longitudinal beams, the overhead travelling crane is slidably connected between two connecting beams, the driving mechanism comprises a second travelling roller frame arranged on the overhead travelling crane, and rollers of the second travelling roller frame are in rolling connection with the longitudinal beams.

[0008] Through the above technical solution, while construction the prefabricated member is hooked by the hoisting mechanism, and the main beam is driven by the travelling mechanism to slide, and then, the connecting beam and the overhead travelling crane drive the prefabricated member to move synchronously with the main beam until the prefabricated member moves to be parallel to the pier at the a setting position, after that, the overhead travelling crane is driven by the driving mechanism to slide, so that the prefabricated member moves above the pier at the setting position, finally, the prefabricated member is lowered to the pier at the setting position by the hoisting mechanism, beam feeding to the pier of the wharf is realized; the main beam is driven by the travelling mechanism to slide, and the overhead travelling crane is driven by the driving mechanism to slide, multi-directional adjustment of the prefabricated member is realized, so that prefabricated beam is placed in an appropriate position quickly, which helps to reduce position adjustment of the main beam, save time and effort, which improves construction efficiency. Additionally, the overhead travelling crane is driven by the second travelling roller frame to slide in the length direction of the longitudinal beams, so as to move the prefabricated member to a setting position.

[0009] In some embodiments, the travelling mechanism includes two rows of supports, the two rows of supports correspond one by one to the two crossbeams, respectively, the supports include several legs arranged in length direction of the crossbeams slidably connected with a bottom of the crossbeams through a power assembly, and supported on the pier through telescoping assembly;

[0010] wherein the power assembly drives the crossbeams to slide when the telescoping assembly is supported on the pier; and the power assembly drives the legs to slide when the telescoping assembly isn’t supported on the pier.

[0011] Through the above technical solution, firstly, bottom of the legs are kept away from the pier by the telescoping assembly, then several legs are driven by the power assembly to sequentially slide to an appropriate position in the length direction of the crossbeams in order, and then the legs are supported on the pier by means of the telescoping assembly, so as to stably support the crossbeams; at this time, the crossbeams can be driven by the power assembly to slide in the length direction of the wharf, and the prefabricated member can slide to a setting position in the length direction of the wharf.

[0012] In some embodiments, the power assembly includes a first travelling roller frame, the first travelling roller frame is arranged on the legs, and rollers of the first travelling roller frame are in rolling connection with the crossbeams.

[0013] Through the above technical solution, when the legs are supported on the ground, the crossbeams are driven by the first travelling roller frame to move; when the legs are far away from the ground, the legs are driven by the first travelling roller frame to slide to an appropriate position in the length direction of the crossbeams, realizing relative sliding between the legs and the crossbeams, so that the crossbeams can slide to any position, and the crossbeams can be stably supported by means of the legs.

[0014] In some embodiments, the hoisting mechanism includes a suspension frame, a lifting motor and a plurality of lifting ropes, the suspension frame is provided with a hoisting assembly configured to connect to the prefabricated member, the plurality of the lifting ropes are all connected with the suspension frame, wherein the lifting motor is arranged at the overhead travelling crane, a drive shaft of the lifting motor is fixedly connected with a lifting shaft coaxially, and the plurality of the lifting ropes are all wound around the lifting shaft.

[0015] Through the above technical solution, the lifting motor is started, the drive shaft of the lifting motor drives the lifting shaft to rotate, so that the lifting shaft winds or unwinds the lifting ropes. The suspension frame is stably adjusted to an appropriate height by controlling the lowering length of the several lifting ropes to be identical. And then the prefabricated member is hoisted by the hoisting assembly, to drive the prefabricated member to slide to an appropriate position in a first direction or in a second direction perpendicular to the first direction subsequently.

[0016] In some embodiments, the hoisting assembly includes a steeve and a major arc hoisting element connected with the steeve, wherein the major arc hoisting element is provided with a hoisting opening for a hoisting ring of the prefabricated member to pass through, an inside wall of the major arc hoisting element is provided with several balls in a circumferential direction of the major arc hoisting element itself, a positioning space is formed between two adjacent of the balls for cooperating with the hoisting ring of the prefabricated member, the steeve is provided with a rotating hole to be passed through by the major arc hoisting element, and wherein the steeve is provided with a rotating element to drive the major arc hoisting element to rotate.

[0017] Through the above technical solution, after lowering the suspension frame to an appropriate height, the major arc hoisting element is driven to rotate by the rotating element, so that the major arc hoisting element passes through the rotating hole. With the rotation of the major arc hoisting element, the hoisting ring of the prefabricated member moves on the balls, wherein several balls play a guiding role for the movement of the hoisting ring of the prefabricated member. After the major arc hoisting element has rotated to an appropriate position, the major arc hoisting element stably hooks the hoisting ring of the prefabricated member. At this time, the suspension frame can be lifted, and the hoisting ring of the prefabricated member is clamped between two adjacent balls under its own gravity, which finally realizes lifting of the prefabricated member.

[0018] In some embodiments, the rotating element includes a servo motor, a gear and a major arc ring gear, the servo motor is arranged in the steeve, a drive shaft of the servo motor is fixedly connected with the gear coaxially, the major arc ring gear is arranged on the outer wall of the major arc hoisting element, the gear is engaged with the major arc ring gear, and the major arc hoisting element is provided with an opening corresponding to the hoisting opening.

[0019] Through the above technical solution, the servo motor is started, which drives the gear to rotate. With the rotation of the gear, the major arc ring gear drives the major arc hoisting element to rotate, so that the major arc hoisting element hooks the hoisting ring of the prefabricated member.

[0020] In some embodiments, the steeve is provided with a positioning element configured for fixing the major arc hoisting element and including a winding motor, a winding shaft, a winding rope, a positioning sheet and a return spring, the winding motor is arranged in the steeve, the drive shaft of the winding motor is fixedly connected with the winding shaft coaxially, the winding rope is wound around the winding shaft, one end of the winding rope is connected with the positioning sheet arranged on a side wall of the steeve, the return spring is arranged between the positioning sheet and the steeve, positioning sheet is provided with sawteeth configured to be engaged with the major arc ring gear.

[0021] Through the above technical solution, after the major arc hoisting element has hooked the hoisting ring of the prefabricated member, the winding motor is started, which winding motor drives the winding shaft to rotate, which winding shaft unwinds the winding rope. At this time, the elastic force of the return spring and the elastic force of the positioning sheet rotate the positioning spring in direction toward the major arc ring gear, such that the sawteeth at the positioning sheet are engaged with the major arc ring gear, whereby fixation of the major arc hoisting element is realized, which is helpful to reduce risk that the prefabricated member falls due to rotation of the major arc hoisting element during lifting of the hoisting rings of the prefabricated member.

[0022] In the second aspect of the present disclosure, a construction method utilizes the following technical solution:

[0023] Erecting a main beam, a connecting beam and an overhead travelling crane onto pier;

[0024] installing an auxiliary support mechanism onto a side wall of the connecting beam extending above the ground;

[0025] supporting the auxiliary support mechanism onto the ground;

[0026] extending a part of the connecting beam above a ground;

[0027] moving a van loaded with a prefabricated member below the connecting beam on the ground;

[0028] lifting the prefabricated member by a hoisting mechanism;

[0029] driving the main beam to travel in a first direction by a travelling mechanism, until the prefabricated member is parallel to the pier of the prefabricated member to be installed;

[0030] driving the overhead travelling crane by a driving mechanism to slide in a second direction perpendicular to the first direction, until the prefabricated member moves to a position above the pier;

[0031] lowering the prefabricated member by the hoisting mechanism onto the pier.

[0032] Through the above technical solution, the main beam is driven by the travelling mechanism to slide in the first direction, wherein the overhead travelling crane is driven by the driving mechanism to slide in a second direction perpendicular to the first direction, so as to adjust position of the prefabricated member in lateral and longitudinal direction, quickly place the prefabricated beam in an appropriate position, reduce position adjustment of the main beam, save time and effort, which helps to improve construction efficiency.

[0033] In addition, provision of the auxiliary support mechanism helps to improve supporting stability of the connecting beam on the main beam, so that the overhead travelling crane slides in the length direction of the connecting beam, which helps to improve transportation stability of prefabricated member.

[0034] To sum up, the present disclosure includes at least one of the following beneficial technical effects:

[0035] 1. The main beam is driven by the travelling mechanism to slide in the first direction, wherein the overhead travelling crane is driven by the driving mechanism to slide in a second direction perpendicular to the first direction, so as to adjust position of the prefabricated member in lateral and longitudinal direction, quickly place the prefabricated beam in an appropriate positions, reduce position adjustment of the main beam, save time and effort, and improve construction efficiency;

[0036] 2. when the legs are supported on the ground, the crossbeams can be driven by the first travelling roller frame to move; when the legs are far away from the ground, the legs are driven, by the first travelling roller frame, to slide to appropriate positions in the length direction of the crossbeams, realizing relative sliding between the legs and the crossbeams, in order to drive the crossbeams to slide to appropriate positions, while the crossbeams can be stably supported by means of the several legs;

[0037] 3. after the major arc hoisting element has rotated to an appropriate position, the major arc hoisting element stably hooks the hoisting ring of the prefabricated member, and then, the suspension frame is lifted, and the hoisting ring of the prefabricated member is clamped between two adjacent balls under its own gravity, which finally realizes lifting of the prefabricated member. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG. 1 is an overall structure schematic diagram of the double-beam hoisting device erected on a wharf in the embodiments of the present disclosure;

[0039] FIG. 2 is an enlarged view at A of fig. I.

[0040] FIG. 3 is a schematic diagram, which represents position relationship between the leg and the pier in the embodiments of the present disclosure.

[0041] FIG. 4 is an enlarged view at B of fig. 1.

[0042] FIG. 5 is a schematic structure diagram, which represents the auxiliary support mechanism in the embodiments of the present disclosure.

[0043] FIG. 6 is a schematic structure diagram, which represents position relationship between the suspension frame and the prefabricated member in the embodiments of the present disclosure.

[0044] FIG. 7 is an enlarged view at C of fig. 6.

[0045] FIG. 8 is a schematic structure diagram, which represents the hoisting assembly in the embodiments of the present disclosure.

[0046] FIG. 9 is a section view in D-D direction in fig. 8.

[0047] FIG. 10 is an enlarged view at E of fig. 9. DESCRIPTION OF THE EMBODIMENTS

[0048] The present disclosure will be further described in detail below in combination with fig. 1 to fig. 10.

[0049] A double-beam hoisting device erected on a wharf is disclosed in the embodiments of the present disclosure. Referring to fig. 1, the hoisting device includes a main beam 1, a connecting beam 2 and an overhead travelling crane 3. The main beam 1 includes two mutually parallel crossbeams 1001. A length direction of the two crossbeams 1001 is the same as a length direction of the wharf. The two crossbeams 1001 are all supported on the ground through a travelling mechanism 4, which travelling mechanism 4 is configured to drive the main beam 1 to travel in the length direction of the wharf. The connecting beam 2 includes two mutually parallel longitudinal beams 201 which are opposite to each other. The two longitudinal beams 202 correspond to the two crossbeams 1001 one by one. The length direction of the longitudinal beams 201 is the same as a width direction of the wharf. The two longitudinal beams 201 are all fixedly installed on top walls of the two crossbeams 1001 through a supporting frame 5. A part of the longitudinal beam 201 extends to a side of the wharf ground. The overhead travelling crane 3 is slidably connected between the two longitudinal beams 201. The longitudinal beam 201 is provided with a driving mechanism to drive the overhead travelling crane 3 to slide in the length direction of the longitudinal beam 201. The overhead travelling crane 3 is provided with a hoisting mechanism 7 for hoisting the prefabricated member 16.

[0050] During construction, the overhead travelling crane 3 is firstly moved above the wharf ground, a van whose cargo compartment is loaded with the prefabricated member 16 is started by an on-site staff to travel below the overhead travelling crane 3, wherein the prefabricated member 16 is hoisted and lifted to an appropriate height by a hoisting mechanism 7. The main beam 1 is driven, by the travelling mechanism 4, to travel in the length direction of the wharf until it is parallel to the pier 15 at a setting position, wherein the prefabricated member 16 is aligned with the pier 15 at the setting position. Then, the overhead travelling crane 3 is driven, by the driving mechanism, to slide in the length direction of the longitudinal beam 201, whereby the prefabricated member 16 is driven to slide in a direction perpendicular to the length direction of the wharf, such that the prefabricated member 16 moves to the pier 15 at the setting position. At this time, the prefabricated member 16 can be lowered by the hoisting mechanism 7, wherein the prefabricated member 16 is laid on the pier 15 at the setting position. With above structure, the prefabricated member 16 can be driven to move in the length direction of the wharf or in the width direction of the wharf. The moving range is large, so that the prefabricated member 16 is placed in an appropriate position quickly, thereby reducing manual position adjustment of the main beam 1 by the on-site staff, saving time and effort, which helps to improve construction efficiency.

[0051] Referring to figures 1 and 2, the travelling mechanism 4 includes two rows of supports, which correspond to two crossbeams 1001 one by one, respectively. The support includes several legs 41 arranged in a length direction of the crossbeam 1001. The number of legs 41 is explained by taking three as examples. The three legs 41 are slidably connected with the bottom of the crossbeam 1001 through a power assembly. The legs 41 is supported on the pier 15 through a telescoping assembly.

[0052] The power assembly of the present embodiment includes a first travelling roller frame 42, which 42 is fixedly arranged on the leg 41. Rollers of the first travelling roller frame 42 are in rolling connection with a side wall of the crossbeam 1001.

[0053] Referring to figures 1, 2 and 3, the telescoping assembly of the present embodiment includes a hydraulic cylinder 43 and a supporting plate 44. The cylinder body of the hydraulic cylinder 43 is fixedly arranged at the bottom of the leg 41. The bottom wall of the leg 41 is provided with a fixing groove 45 for accommodating the hydraulic cylinder 43. A piston rod of the hydraulic cylinder 43 is connected with the supporting plate 44. The supporting plate 44 is adaptive to lie against the pier 15.

[0054] The hydraulic cylinder 43 is started, and the piston rod of the hydraulic cylinder 43 reaches out, such that the supporting plate 44 lies against the pier 15, in order to stably support the leg 41 on the ground. At this time, the crossbeam 1001 can be driven to slide in the length direction of the wharf. When the piston rod of the hydraulic cylinder 43 is retracted, such that the supporting plate 44 moves away from the pier 15 and the leg 41 hangs in the air. At this time, the leg 41 is driven, by the first travelling roller frame 42, to slide along the crossbeam 1001, so as to drive the prefabricated member 16 to slide in the length direction of the wharf.

[0055] The three legs 41 are named as a front leg, a middle leg and a rear leg in the length direction of the wharf. When it is necessary to drive the crossbeam 1001 travel in the length direction of the wharf, the rear leg is firstly driven, by the first travelling roller frame 42, to slide to a setting position in the length direction of the crossbeam 1001, and the supporting plate 44 is pressed against the pier 15 by the hydraulic cylinder 43, such that the rear leg is stably supported on the pier 15; then the middle leg is driven, by the first travelling roller frame 42, to slide in the length direction of the crossbeam 1001 until a distance between the middle leg and the rear leg reaches a setting distance, after that, the middle leg is stably supported on the pier 15 through cooperation of the hydraulic cylinder 43 and the supporting plate 44.

[0056] Then, the hydraulic cylinder 43 at the bottom of the front leg drives the supporting plate 44 away from the pier 15, such that the crossbeam 1001 is driven, by the first travelling roller frame 42, to slide in its own circumferential direction, while the front leg moves synchronously with the crossbeam 1001 until the distance between the front crossbeam 1001 and the middle leg reaches a setting position, after that, position adjustment of the crossbeam 1001 is accomplished, so that the distance between the front leg and the middle leg, the distance between the middle leg and the rear leg reaches a setting distance, so as to stably support the crossbeam 1001.

[0057] Referring to Figures 1 and 4, the driving mechanism includes a second travelling roller frame 6, which 6 is fixedly arranged on the side wall of the overhead travelling crane 3, wherein the rollers of the second travelling roller frame 6 are in rolling connection with the longitudinal beam 201. The second travelling roller frame 6 is started, such that the second travelling roller frame 6 slides on the longitudinal beam 201, and then, the second travelling roller frame 6 drives the overhead travelling crane 3 to slide on the longitudinal beam 201, and then, the overhead travelling crane 3 drives the prefabricated member 16 to slide to an appropriate position in a direction perpendicular to the length direction of the wharf.

[0058] Referring to Figures 1 and 5, in order to further enhance sliding stability of the overhead travelling crane 3 on the longitudinal beam 201, the two longitudinal beams 201 are both supported on the wharf ground through an auxiliary support mechanism 11. The auxiliary support mechanism 11 includes two vertically arranged auxiliary support legs 111, wherein the bottom wall of the auxiliary support leg 111 is provided with a placement groove 113, wherein the groove wall of the placement groove 113 is provided with a jack 112, wherein the cylinder body of the jack 112 is fixedly installed on the groove wall of the placement groove 113, and the piston rod of the jack 112 is connected with a fixing plate 114. The piston rod of the jack 112 is driven to retract, such that the auxiliary support leg 111 hangs in air, at this time, the longitudinal beam 201 travels with the crossbeam 1001. After the position of crossbeam 1001 has been adjusted to an appropriate position, the piston rod of the jack 112 reaches out, such that the fixing plate 114 lies against the wharf ground, thereby the auxiliary support leg 111 is stably supported on the wharf ground, improving stability of the longitudinal beam 201, such that the overhead travelling crane 3 stably slides on the longitudinal beam 201.

[0059] In the present embodiment, a vehicle passageway is reserved between the auxiliary support legs 111 of the bottom walls of the two longitudinal beams 201 and one of the rows of supports. The vehicle passageway is provided to allow the van to travel.

[0060] Referring to Figures 4 and 6, the hoisting mechanism 7 includes a suspension frame 71, a lifting motor 72, a lifting shaft 73 and several lifting ropes 74. The suspension frame 71 is provided with several hoisting assemblies 8 for connecting with the prefabricated member 16. The several lifting ropes 74 are all connected to the suspension frame 71. The motor body of the lifting motor 72 is installed on the side wall of the overhead travelling crane 3. The drive shaft of the lifting motor 72 is fixedly connected with the lifting shaft 73 coaxially. One end of the lifting rope 74 far from the suspension frame 71 is connected to the lifting shaft 73. The lifting rope 74 is wound around the lifting shaft 73. After the prefabricated member 16 has been hoisted on the suspension frame 71 by the hoisting assembles 8, the lifting motor 72 is started, which 72 drives the lifting shaft 73 to rotate, and then, the lifting shaft 73 winds the lifting ropes 74 to realize height adjustment of the suspension frame 71, so as to adjust the prefabricated member 16 to an appropriate height.

[0061] In the present embodiment, the lifting motor 72 slides on the overhead travelling crane 3 in the length direction of the wharf through a displacement part, wherein the lifting motor 72 is driven to slide by the displacement part, which plays a fine adjustment role in the sliding of the hoisted prefabricated member 16 in the length direction of the wharf, so as to quickly adjust the suspension frame 71 to an appropriate position, which is helpful to improve hoisting efficiency.

[0062] Referring to Figures 6 and 7, the top wall of the suspension frame 71 is fixedly provided with an anti-sway seat 12, which 12 is sleeved over the lifting rope 74. The side wall of the anti-sway seat 12 is provided with a swing hole 13 to be passed through by the lifting rope 74. A rubber pad 14 is arranged in the swing hole 13, which lies against the side wall of the lifting rope 74. Since the suspension frame 71 tends to shake when the lifting ropes 74 pull the suspension frame 71 to lift, cooperation between the anti-sway seat 12 and the rubber pad 14 helps to enhance connection strength between the suspension frame 71 and the lifting rope 74, while the rubber pad 14 is adaptive to buffer swing of the lifting rope 74, and to reduce cracking at the junction between the lifting rope 74 and the suspension frame 71 caused by long-time shaking of the suspension frame 71.

[0063] Referring to Figures 6 and 8, the hoisting assembly 8 includes a steeve 81, a major arc hoisting element 82 and several balls 84. The steeve 81 is vertically arranged, and the steeve 81 is arranged on the bottom wall of the suspension frame 71. The side wall of the major arc hoisting element 82 is provided with a hoisting opening 83, which 83 is adaptive to be passed through by the hoisting ring 161 of the prefabricated member 16. The several balls 84 are all embedded in the inside wall of the major arc hoisting element 82, and the several balls 84 are arranged in the circumferential direction of the major arc hoisting element 82, wherein a positioning space for cooperating with the hoisting ring 161 of the prefabricated member 16 is formed between two adjacent balls 84. The side wall of the steeve 81 is provided with a rotating hole 85 to be passed through by the major arc hoisting element 82, and the steeve 81 is provided with a rotating element 9 adaptive to drive the major arc hoisting element 82 to rotate in its own circumferential direction.

[0064] After the suspension frame 71 has been adjusted to an appropriate height, the major arc hoisting element 82 is driven to rotate by the rotating element 9, such that the major arc hoisting element 82 passes through the hoisting ring 161. The several balls 84 guide the relative movement of the hoisting ring 161 and the major arc hoisting element 82. After the major arc hoisting element 82 has passed through the hoisting ring 161 and rotated to an appropriate position, the hoisting ring 161 is embedded in the positioning space between the two adjacent balls 84. At this time, the prefabricated member 16 can be lifted. Two balls 84 fix the position of the hoisting ring 161 in the major arc hoisting element 82, which helps to avoid displacement of the hoisting ring 161 in the major arc hoisting element 82 during lifting of the prefabricated member 16 and improves lifting stability of the prefabricated member 16.

[0065] Referring to figures 8 and 9, the rotating element 9 includes a servo motor 91, a gear 92 and a major arc ring gear 93. The steeve 81 is provided with an installing groove 94. The motor body of the servo motor 91 is arranged on the groove wall of the installing groove 94. The drive shaft of the servo motor 91 is fixedly connected with the gear 92 coaxially. In the present embodiment, the major arc ring gear 93 is integrally formed with the major arc hoisting element 82, wherein the major arc ring gear 93 is arranged on the outer wall of the major arc hoisting element 82. The gear 92 is engaged with the major arc ring gear 93. The side wall of the major arc ring gear 93 is provided with an opening corresponding to the hoisting opening 83, such that the major arc hoisting element 82 passes through the hoisting ring 161. The servo motor 91 is started, the gear 92 is driven to rotate by the servo motor 91, and the gear 92 drives the major arc ring gear 93 to rotate and in turn drives the major arc hoisting element 82 to rotate, so that the major arc hoisting element 82 passes through the hoisting ring 161.

[0066] Referring to figures 9 and 10, in order to further improve lifting stability of the prefabricated member 16, the side wall of the steeve 81 is provided with positioning elements 10 for fixing the major arc hoisting element 82. In the present embodiment, the positioning elements 10 are divided into two groups. The two groups of the positioning elements 10 are respectively arranged on both sides of the steeve 81. The positioning element 10 includes a winding motor 101, a winding shaft 102, a winding rope 103, a positioning sheet 104 and a return spring 105. The interior of the steeve 81 is provided with a cavity 106. The drive shaft of the winding motor 101 is arranged on the cavity wall of the cavity 106, wherein the drive shaft of the winding motor 101 is fixedly connected with the winding shaft 102 coaxially. One end of the winding rope 103 is connected to the winding shaft 102. The side wall of the steeve 81 is provided with a throughhole 107, wherein the other end of the winding rope 103 passes through the throughhole 107 and extends out of the side wall of the steeve 81. The winding rope 103 is wound around the winding shaft 102. The positioning sheet 104 is arranged on the side wall of the steeve 81. One end of the winding rope 103 outside of the side wall of the steeve 81 is fixedly connected with the side wall of the positioning sheet 104 toward the steeve 81. The return spring 105 is arranged between the positioning sheet 104 and the steeve 81. The side wall of the positioning sheet 104 far away from the return spring 105 is provided with sawteeth 108 engaged with the major arc ring gear 93. In the present embodiment, the sawteeth 108 are integrally formed with the positioning sheet 104.

[0067] In some embodiments, the positioning sheet 104 is a flexible elastic sheet. The positioning sheet 104 is pushed by elastic force of the return spring 105 to rotate in direction towards the major arc ring gear 93, such that the sawteeth 108 at the positioning sheet 104 are against the major arc ring gear 93, which realizes fixation of the major arc ring gear 93 and helps to reduce rotation of the major arc ring gear 93.

[0068] When it is necessary to drive the major arc ring gear 93 to rotate, the winding motor 101 is started, the winding motor 101 drives the winding shaft 102 to rotate, the winding shaft 102 winds the winding rope 103, and then, the positioning sheet 104 is pulled to rotate in direction toward the steeve 81 through the winding rope 103, so as to separate the sawteeh 108 at the positioning sheet 104 from the major arc hoisting element 93, and then, the major arc hoisting element can be driven to rotate. With the above hoisting method, the hoisting ring 161 can be lifted automatically without manual hoisting, thereby saving time and effort.

[0069] The implementation principle of the embodiments of the present disclosure is: the servo motor 91 drives the gear 92 to rotate, the gear 92 drives the major arc ring gear 93 to rotate and in turn drives the major arc hoisting element 82 to rotate, such that the major arc hoisting element 82 passes through the hoisting ring 161 at the prefabricated component 16 until the major arc hoisting element 82 rotates to an appropriate position and the hoisting ring 161 is clamped between two adjacent balls 84; then the winding shaft 102 is started, and the winding shaft 102 unwinds the winding rope 103 unwind, at this time, the positioning sheet 104 is pushed by the elastic force of the return spring 105 to lie against the major arc ring gear 93, such that the sawteeth 108 are engaged with the major arc ring gear 93, realizing positioning of the major arc hoisting element 82. The lifting motor 72 is started, which lifting motor 72 drives the lifting shaft 73 to rotate, which lifting shaft 73 winds the lifting rope 74 to adjust the prefabricated member 16 to an appropriate height.

[0070] The rear leg is driven by the first travelling roller frame 42 to slide to the setting position in the length direction of the crossbeam 1001, and the supporting plate 44 is pressed against the ground by the hydraulic cylinder 43, so that the rear leg is stably supported on the pier 15. Then, the middle leg is driven by the first travelling roller frame 42 to slide in the length direction of the crossbeam 1001 until the distance between the middle leg and the rear leg reaches a set distance, and the middle leg is stably supported on the pier 15 through cooperation of the hydraulic cylinder 43 and the supporting plate 44. Then, the supporting plate 44 is driven to be away from the pier 15 by the hydraulic cylinder 43 at the bottom of the front leg, so that the crossbeam 1001 is driven by the first travelling roller frame 42 to slide, while the front leg moves synchronously with the crossbeam 1001 until the distance between the front crossbeam 1001 and the middle leg reaches a setting position, after that, position adjustment of the crossbeam 1001 is accomplished. With the movement of the crossbeam 1001, the crossbeam 1001 drives the longitudinal beam 201 and the overhead travelling crane 3 to move synchronously, such that the prefabricated member 16 is adjusted to be parallel to the pier 15 at the setting position.

[0071] Then the second traveling roller frame 6 is started, such that the overhead travelling crane 3 slides in a direction perpendicular to the length direction of the wharf, so as to slide the prefabricated member 16 in a direction perpendicular to the length direction of the wharf, moving the prefabricated member 16 above the setting pier 15 and lowering it to lie on the pier 15. Finally, movement of the prefabricated member 16 in a direction parallel to the length direction of the wharf or perpendicular to the length direction of the wharf is realized, reducing position adjustment of the main beam 1, saving time and effort, which helps to improve construction efficiency.

[0072] A construction and erection method for feeding beam in multi-direction is disclosed, too, comprising:

[0073] erecting crossbeams 1001, longitudinal beams 201 and an overhead travelling crane 3 on pier 15 according to the site construction drawing;

[0074] extending a part of a side wall of the longitudinal beams 201 above a wharf ground;

[0075] installing an auxiliary support mechanism 11 at a bottom wall of the longitudinal beams 201 extending above the wharf ground;

[0076] supporting the auxiliary support mechanism 11 on the wharf ground;

[0077] moving a van loaded with a prefabricated member 16 below the longitudinal beams 201 on the wharf ground;

[0078] lifting the prefabricated member 16 in the cargo compartment of the van by means of a hoisting mechanism 7;

[0079] driving a main beam 1 to travel in a length direction of the wharf by means of a travelling mechanism 4, until the prefabricated member 16 is parallel to the pier 15 of the prefabricated member 16 to be installed;

[0080] driving the overhead travelling crane 3, by means of the driving mechanism, to slide in a direction perpendicular to the length direction of the wharf, until the prefabricated member 16 moves above the pier 15;

[0081] lowering the prefabricated member 16, by means of the hoisting mechanism 7, onto the pier 15 and accomplishing a beam feeding operation to the pier 15 of the wharf.

[0082] The above are preferred embodiments of the present disclosure, which do not limit the protection scope of the present disclosure. Therefore, any equivalent modifications made based on the structure, shape and principle of the present disclosure should be covered by the protection scope of the present disclosure. Listing of Reference Signs 1 main beam 1001 crossbeam 2 connecting beam 201 longitudinal beam 3 overhead travelling crane 4 travelling mechanism 41 leg 42 first travelling roller frame 43 hydraulic cylinder 44 supporting plate fixing groove supporting frame second travelling roller frame hoisting mechanism suspension frame lifting motor lifting shaft lifting rope hoisting assembly steeve major arc hoisting element hoisting opening ball rotating hole rotating element servo motor gear major arc ring gear installing groove positioning element winding motor winding shaft winding rope positioning sheet return spring cavity throughhole sawtooth auxiliary support mechanism auxiliary support leg jack placement groove fixing plate anti-sway seat swing hole rubber pad pier prefabricated member hoisting ring

Claims

1. A double-beam hoisting device, comprising: a main beam (1) comprising two mutually parallel crossbeams (1001) arranged opposite to each other, a connecting beam (2) and an overhead travelling crane (3), wherein the main beam (1) is supported on a pier (5) through a travelling mechanism (4), the travelling mechanism (4) is configured to drive the main beam (1) to travel, the connecting beam (2) is arranged on the main beam (1), the connecting beam (2) is provided with a driving mechanism configured to drive the overhead travelling crane (3) to slide, and the overhead travelling crane (3) is provided with a hoisting mechanism (7) configured to hoist a prefabricated member (16), wherein the connecting beam (2) comprises two mutually parallel longitudinal beams (201), the overhead travelling crane (3) is slidably connected between two connecting beams (2), the driving mechanism comprises a second travelling roller frame (6) arranged on the overhead travelling crane (3), and rollers of the second travelling roller frame (6) are in rolling connection with the longitudinal beams (201).

2. The double-beam hoisting device according to claim 1, wherein the travelling mechanism (4) comprises two rows of supports, the two rows of supports correspond to the two crossbeams (1001) one by one, respectively, and the supports comprise several legs (41) arranged in a length direction of the crossbeams (1001), slidably connected with a bottom of the crossbeams (1001) through a power assembly, and supported on the pier (15) by a telescoping assembly;wherein the power assembly drives the crossbeams (1001) to slide when the telescoping assembly is supported on the pier (15); and the power assembly drives the legs (41) to slide when the telescoping assembly isn’t supported on the pier (15).

3. The double-beam hoisting device according to claim 2, wherein the power assembly comprises a first travelling roller frame (42), the first travelling roller frame (42) is arranged on the legs (41), and rollers of the first travelling roller frame (42) are in rolling connection with the crossbeams (1001).

4. The double-beam hoisting device erected on a wharf according to claim 1, wherein thehoisting mechanism (7) comprises a suspension frame (71), a lifting motor (72) and a plurality of lifting ropes (73), the suspension frame (71) is provided with a hoisting assembly (8) configured to connect to the prefabricated member (16), the plurality of the lifting ropes (73) are all connected with the suspension frame (71), the lifting motor (72) is arranged on the overhead travelling crane (3), a drive shaft of the lifting motor (72) is fixedly connected with a lifting shaft (73) coaxially, and the plurality of the lifting ropes (74) are all wound around the lifting shaft (73).

5. The double-beam hoisting device according to claim 4, wherein the hoisting assembly (8) comprises a steeve (81) and a major arc hoisting element (82) connected with the steeve (81), the major arc hoisting element (82) is provided with a hoisting opening (83) for a hoisting ring (161) of the prefabricated member (16) to pass through, an inside wall of the major arc hoisting element (82) is provided with several balls (84) in a circumferential direction of the major arc hoisting element itself, a positioning space is formed between two adjacent of the balls (84) for cooperating with the hoisting ring (161) of the prefabricated member (16), the steeve (81) is provided with a rotating hole (85) for the major arc hoisting element (82) to pass through, and the steeve (81) is provided with a rotating element (9) to drive the major arc hoisting element (82) to rotate around itself.

6. The double-beam hoisting device according to claim 5, wherein the rotating element (9) comprises a servo motor (91), a gear (92) and a major arc ring gear (93), the servo motor (91) is arranged in the steeve (81), a drive shaft of the servo motor (91) is fixedly connected with the gear (92) coaxially, the major arc ring gear (93) is arranged on an outer wall of the major arc hoisting element (82), the gear (92) is engaged with the major arc ring gear (93), and the major arc hoisting element (82) is provided with an opening corresponding to the hoisting opening (83).

7. The double-beam hoisting device according to claim 6, wherein the steeve (81) is provided with a positioning element (10) configured for fixing the major arc hoisting element (82) andcomprising a winding motor (101), a winding shaft (102), a winding rope (103), a positioning sheet (104) and a return spring (105), the winding motor (101) is arranged in the steeve (81), a drive shaft of the winding motor (101) is fixedly connected with the winding shaft (102) coaxially, the winding rope (103) is wound around the winding shaft (102), one end of the winding rope (103) is connected with the positioning sheet (104) arranged on a side wall of the steeve (81), the return spring (105) is arranged between the positioning sheet (104) and the steeve (81), and the positioning sheet (104) is provided with sawteeth (108) configured to be engaged with the major arc ring gear (93).

8. A construction method, comprising:erecting a main beam (1), a connecting beam (2) and an overhead travelling crane (3) onto a pier (15);installing an auxiliary support mechanism (11) onto a side wall of the connecting beam (2) extending above the ground;supporting the auxiliary support mechanism (11) onto the ground;extending a part of the connecting beam (2) above a ground;moving and positioning a van loaded with a prefabricated member (16) below the connecting beam (2) on the ground;lifting the prefabricated member (16) by using a hoisting mechanism (7);driving the main beam (1) to travel in a first direction by a travelling mechanism (4), until the prefabricated member (16) is parallel to the pier (15) of the prefabricated member (16) to be installed;driving the overhead travelling crane (3) by a driving mechanism to slide in a second direction perpendicular to the first direction, until the prefabricated member (16) moves to a position above the pier (15);lowering the prefabricated member (16) by the hoisting mechanism (7) onto the pier (15).

Images