Steel structure cable-stayed bridge cantilever assembling device

Abstract

The utility model discloses a steel structure cable-stayed bridge cantilever assembling device, and particularly relates to the technical field of bridge construction, the steel structure cable-stayed bridge cantilever assembling device comprises a base, a lifting tower is arranged above the base, the top surface of the inner wall of the lifting tower is connected with a pair of pulleys, and the outer sides of the pulleys are sleeved with second steel cables; the other end of the second steel cable is connected with an inhaul cable support and a pair of first steel cables, one ends of the pair of first steel cables are connected with a shell, the bottom of the shell is slidably connected with a pair of first U-shaped frames, the tops of long arms of the first U-shaped frames are slidably connected with a pair of fixing sleeves, and the tops of the fixing sleeves are connected with a second U-shaped frame; and two side arms of the second U-shaped frame are connected with insertion rods in a penetrating manner. The distance between the pair of first U-shaped frames is conveniently adjusted by starting the pair of first motors, and then the distance between the second U-shaped frames on the two sides is adjusted by starting the second motors on the two sides, so that the flexibility is improved, and the embedded parts with different distances can be conveniently adapted.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, concretely relates to a kind of steel structure cable-stayed bridge cantilever assembling device. BACKGROUND

[0002] ‌The cantilever assembling of steel structure cable-stayed bridge refers to that prefabricated beam segment (concrete beam or steel beam) is moved to the end of completed structure using cantilever assembling device and is assembled, and is assembled section by section until structure is closed in midspan or is assembled to next pier, and this method is suitable for the main beam cantilever assembling operation of steel-concrete composite beam cable-stayed bridge in large-span, deep water, rapid flow, frequent navigation river.

[0003] The Chinese patent with publication number CN206396635U discloses a kind of cable-stayed bridge cantilever assembling device and beam segment, and the patent technology is lowered by hoisting rope traction hoisting crossbeam, until electromagnet and embedded piece contact, then control electromagnet energization and generate magnetic force and attract embedded piece, then hoisting rope traction hoisting crossbeam rises, but in the assembling process, the length, width size of each section beam segment are not identical, leading to inconsistent spacing between its embedded pieces, plus the length of hoisting crossbeam is fixed, the spacing between two electromagnets is fixed, it is difficult to adjust distance, can only be applicable to the hoisting of same type size beam segment. UTILITY MODEL CONTENT

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0005] A kind of steel structure cable-stayed bridge cantilever assembling device, comprising:

[0006] Base, the upper portion of the base is equipped with lifting tower, the lifting tower is connected with the outer shell of lifting by steel cable;

[0007] The bottom of the outer shell is slidably connected with at least a pair of first U-shaped frame, the first U-shaped frame is equipped with first drive mechanism, the first drive mechanism drives two first U-shaped frame to move towards or away from each other to adjust lateral spacing;

[0008] The top of the first U-shaped frame is slidably connected with second U-shaped frame, the second U-shaped frame is equipped with second drive mechanism, the second drive mechanism drives two second U-shaped frame to move towards or away from each other to adjust longitudinal spacing;

[0009] The two sides of the second U-shaped frame are equipped with inserting rod, for connecting the beam segment of steel structure cable-stayed bridge cantilever to fix position.

[0010] Further, the upper middle position of the base is connected with a winch, the upper right side of the base is connected with a lifting tower, the inner wall top surface of the lifting tower is connected with a pulley, the upper sleeve of the pulley is provided with a second steel cable, one end of the second steel cable is fixedly connected with the winch, the other end of the second steel cable is connected with a cable support, the bottom of the cable support is connected with a first steel cable, one end of the first steel cable is connected with an outer shell, the bottom of the outer shell is provided with a first through hole, the first through hole is slidably connected with a first U-shaped frame, the top of the first U-shaped frame is provided with the first driving mechanism.

[0011] The top of the longer arm of the first U-shaped frame is provided with a second through hole, the second through hole is slidably connected with a fixing sleeve, the top of the fixing sleeve and the outer side of the first U-shaped frame are connected with a second U-shaped frame, the two side arms of the second U-shaped frame are connected with a plug rod, and the inside of the fixing sleeve is provided with the second driving mechanism.

[0012] Further, the first driving mechanism comprises a first motor, one end of the output shaft of the first motor penetrates the inside of the outer shell and is connected with a first bidirectional screw rod, one end of the first bidirectional screw rod is rotatably connected with a first bearing seat, the back side of the first bearing seat is fixedly connected with the outer shell, and the outer side of the first bidirectional screw rod is connected with a pair of first ball nut pairs.

[0013] Further, the top of the two shorter arms of the first U-shaped frame is provided with a pair of sliding holes, the inside of the sliding hole is slidably connected with a sliding rod, and the two ends of the sliding rod are fixedly connected with the side wall of the first through hole.

[0014] Further, the second driving mechanism comprises a second motor, one end of the output shaft of the second motor penetrates the inside of the first U-shaped frame and is connected with a second bidirectional screw rod, one end of the second bidirectional screw rod is rotatably connected with a second bearing seat, the back side of the second bearing seat is fixedly connected with the first U-shaped frame, the outer side of the second bidirectional screw rod is connected with a pair of second ball nut pairs, and the outer side of the second ball nut pair is fixedly connected with the fixing sleeve.

[0015] Further, the two sides of the first U-shaped frame are connected with sliding rails, the outer side of the sliding rail is slidably connected with a pair of sliding blocks, and one side of the sliding block is fixedly connected with the second U-shaped frame.

[0016] Further, the left side of the base located at the winch is connected with a pair of triangular supports, the top of the triangular support is respectively connected with a first inclined cable and a second inclined cable, one end of the first inclined cable is fixedly connected with the base, and one end of the second inclined cable is fixedly connected with the lifting tower.

[0017] In the above technical solutions, the utility model provides technical effect and advantage:

[0018] 1, the utility model discloses a pair of first motor is set up, and the first two -way screw rod of both sides is rotated, and then the first ball nut pair and the first U -shaped frame of outside are moved to each other or are moved away, and then the interval between a pair of first U -shaped frame is conveniently adjusted, and then through the second motor of both sides is opened, and the second two -way screw rod is rotated, and then the interval between the second U -shaped frame of both sides is adjusted, and the flexibility is increased, and it is convenient to adapt to the embedded piece of different interval, and then it is favorable to satisfy the hoisting of different types of size beam segment, and the length of hoisting crossbeam is fixed, and it is difficult to adjust the distance, and can only be applicable to the hoisting of the beam segment of same type size.

[0019] 2, the utility model discloses the second U -shaped frame is sleeved on the outside of embedded piece, and the plug rod is inserted into the inside of embedded piece and second U -shaped frame, and it is favorable to complete the fixation of embedded piece, and then a pair of winch is opened, and it is convenient to drive the shell to lift through the connection of second steel cable and first steel cable, and then it is convenient to drive the beam segment to lift and hoist. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0021] Figure 1 It is one of the overall structure schematic diagram of the utility model;

[0022] Figure 2 It is the second overall structure schematic diagram of the utility model;

[0023] Figure 3 It is the sectional view of the shell top of the utility model;

[0024] Figure 4 It is the explosion diagram of the first U-shaped frame and the second U-shaped frame of the utility model;

[0025] Figure 5 It is the side sectional view of the first U-shaped frame of the utility model.

[0026] EXPLANATION OF REFERENCE NUMERALS:

[0027] 1, the tower; 2, cable support; 3, the first cable; 4, the shell; 5, the first U-shaped frame; 6, the second U-shaped frame; 7, the base; 8, the second cable; 9, the winch; 10, the tripod; 11, the first cable-stayed cable; 12, the second cable-stayed cable; 13, the pulley; 14, the plug rod; 15, the first motor; 16, the first bidirectional screw rod; 17, the slide rod; 18, the first ball nut pair; 19, the first bearing seat; 20, the first through hole; 21, the slide rail; 22, the sliding block; 23, the second motor; 24, the fixed sleeve; 25, the sliding hole; 26, the second bearing seat; 27, the second ball nut pair; 28, the second bidirectional screw rod; 29, the second through hole. DETAILED DESCRIPTION

[0028] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0029] The embodiment of the application provides a steel structure cable-stayed bridge cantilever assembling device, and solves the problems in the prior art.

[0030] The technical scheme in the embodiment of the application is to solve the above problems, and the general idea is as follows:

[0031] As shown in Figures 1-5 A steel structure cable-stayed bridge cantilever assembling device, comprising:

[0032] The upper portion of the base 7 is connected with the lifting tower 1 on the right side of the winch 9, the inner wall top surface of the lifting tower 1 is connected with a pair of pulleys 13, the outer side of the pulley 13 is sleeved with the second cable 8, one end of the second cable 8 is fixedly connected with the winch 9, the other end of the second cable 8 is connected with the cable support 2, the bottom of the cable support 2 is connected with a pair of first cables 3, one end of the pair of first cables 3 is connected with the shell 4, a pair of first through holes 20 are formed in the bottom of the shell 4, a pair of first U-shaped frames 5 are slidably connected in the first through holes 20, and the top of the two shorter arms of the first U-shaped frame 5 is provided with a first driving mechanism;

[0033] The top of the longer arm of the first U-shaped frame 5 is provided with a second through hole 29, a pair of fixed sleeves 24 are slidably connected in the second through hole 29, the top of the fixed sleeve 24 and the outer side of the first U-shaped frame 5 are connected with the second U-shaped frame 6, the two side arms of the second U-shaped frame 6 are connected with the plug rod 14 in a penetrating mode, and the inside of the fixed sleeve 24 is provided with a second driving mechanism.

[0034] In an embodiment, the first driving mechanism comprises a first motor 15, one end of the output shaft of the first motor 15 is connected with a first bidirectional screw rod 16 penetrating through the inside of the shell 4, one end of the first bidirectional screw rod 16 is rotatably connected with a first bearing seat 19, the back side of the first bearing seat 19 is fixedly connected with the shell 4, the outer side of the first bidirectional screw rod 16 is connected with a pair of first ball nut pairs 18, the outer side of the first ball nut pairs 18 is fixedly connected with the first U-shaped frame 5, a pair of first motors 15 are turned on to drive the two sides of the first bidirectional screw rod 16 to rotate, thereby driving the first ball nut pairs 18 and the outer side of the first U-shaped frame 5 to move towards or away from each other, thereby facilitating the adjustment of the distance between the pair of first U-shaped frames 5.

[0035] In an embodiment, the top of the two shorter arms of the first U-shaped frame 5 is provided with a pair of sliding holes 25, a sliding rod 17 is slidably connected in the sliding hole 25, and the two ends of the sliding rod 17 are fixedly connected with the side wall of the first through hole 20, which is beneficial to increase the stability of the first U-shaped frame 5 during sliding.

[0036] In an embodiment, the second driving mechanism comprises a second motor 23, one end of the output shaft of the second motor 23 is connected with a second bidirectional screw rod 28 penetrating through the inside of the first U-shaped frame 5, one end of the second bidirectional screw rod 28 is rotatably connected with a second bearing seat 26, the back side of the second bearing seat 26 is fixedly connected with the first U-shaped frame 5, the outer side of the second bidirectional screw rod 28 is connected with a pair of second ball nut pairs 27, the outer side of the second ball nut pairs 27 is fixedly connected with the fixed sleeve 24, the two sides of the second motor 23 are turned on to drive the second bidirectional screw rod 28 to rotate, thereby adjusting the distance between the two sides of the second U-shaped frame 6, and facilitating the sleeving of the second U-shaped frame 6 on the outside of the embedded part.

[0037] In an embodiment, the two sides of the first U-shaped frame 5 are connected with a sliding rail 21, the outer side of the sliding rail 21 is slidably connected with a pair of sliding blocks 22, one side of the sliding block 22 is fixedly connected with the second U-shaped frame 6, which is beneficial to increase the stability of the second U-shaped frame 6 during sliding.

[0038] In an embodiment, the upper side of the base 7 is connected with a pair of triangular frames 10 on the left side of the winch 9, the top of the triangular frame 10 is respectively connected with a first diagonal cable 11 and a second diagonal cable 12, one end of the first diagonal cable 11 is fixedly connected with the base 7, one end of the second diagonal cable 12 is fixedly connected with the lifting tower 1, by setting the triangular frame 10 and connecting the first diagonal cable 11 and the second diagonal cable 12 on the top of the triangular frame 10, it is beneficial to improve the stability of the lifting tower 1.

[0039] Working principle: the utility model discloses a pair of first motor 15 is opened through setting, drives the rotation of both sides' first two -way screw rod 16, and then drives the first ball nut pair 18 and the first U -shaped frame 5 of outside side moves towards or is away from each other, and then conveniently adjusts the interval between a pair of first U -shaped frame 5, subsequently through the opening of both sides' second motor 23, drives the rotation of second two -way screw rod 28, and then adjusts the interval between both sides' second U -shaped frame 6, conveniently with the second U -shaped frame 6 of burying piece's outside, and the plug -in rod 14 is inserted into burying piece and the inside of second U -shaped frame 6, is favorable to complete the fixation of burying piece, subsequently opens a pair of winch 9, through the connection of second steel cable 8 and first steel cable 3, conveniently drives the shell 4 to promote, and then conveniently drives the beam section to promote hoisting;

[0040] Specifically, the lifting tower 1 on the base 7 is linked with the winch 9, the second steel cable 8 is wound around the pulley 13 to pull the cable support 2 and the first steel cable 3, and the shell 4 is driven to ascend and descend; the pair of first U-shaped frames 5 at the bottom of the shell 4 is driven to move horizontally by the first motor 15 and the first two-way screw rod 16, the interval between the two first U-shaped frames 5 is adjusted to adapt to the width of the beam section, and the second U-shaped frame 6 on the first U-shaped frame 5 is driven to move longitudinally by the second motor 23 and the second two-way screw rod 28, the interval between the two second U-shaped frames 6 is further adjusted to match the position of the embedded part; after the adjustment is completed, the second U-shaped frame 6 is sleeved into the embedded part of the steel structure cable-stayed bridge cantilever and is locked by the plug-in rod 14, the shell 4 and the beam section are lifted to the end of the cantilever by starting the winch 9 to complete the assembly, and the bridge is extended step by step by repeating the operation.

[0041] The above only describes certain exemplary embodiments of the utility model in a descriptive manner, without doubt, for ordinary skilled person in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the utility model. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection claimed by the utility model.

Claims

1. A steel structure cable-stayed bridge cantilever assembling device, characterized in that, Include: The base (7) is provided with a lifting tower (1) above, the lifting tower (1) is connected with the outer shell (4) through the cable; The bottom of the outer shell (4) is slidably connected with at least a pair of first U-shaped frame (5), the first U-shaped frame (5) is provided with a first drive mechanism, the first drive mechanism drives two first U-shaped frame (5) to move towards or away from each other to adjust the lateral spacing; The top of the first U-shaped frame (5) is slidably connected with the second U-shaped frame (6), the second U-shaped frame (6) is provided with a second drive mechanism, the second drive mechanism drives two second U-shaped frame (6) to move towards or away from each other to adjust the longitudinal spacing; The two sides of the second U-shaped frame (6) are provided with the plug rod (14) for connecting the beam segment of the steel structure cable-stayed bridge cantilever to fix the position.

2. The steel structure cable-stayed bridge cantilever assembling device according to claim 1, characterized in that: The middle of the base (7) is connected with the winch (9), the right side of the base (7) above the winch (9) is connected with the lifting tower (1), the inner wall top of the lifting tower (1) is connected with the pulley (13), the pulley (13) is sleeved with the second cable (8) above, one end of the second cable (8) is fixedly connected with the winch (9), the other end of the second cable (8) is connected with the cable support (2), the bottom of the cable support (2) is connected with the first cable (3), one end of the first cable (3) is connected with the outer shell (4), the bottom of the outer shell (4) is provided with the first through hole (20), the first through hole (20) is slidably connected with the first U-shaped frame (5), the top of the first U-shaped frame (5) is provided with the first drive mechanism; The top of the longer arm of the first U-shaped frame (5) is provided with the second through hole (29), the second through hole (29) is slidably connected with the fixed sleeve (24), the top of the fixed sleeve (24) and the outside of the first U-shaped frame (5) are connected with the second U-shaped frame (6), the two sides of the second U-shaped frame (6) are connected with the plug rod (14), the inside of the fixed sleeve (24) is provided with the second drive mechanism.

3. The steel structure cable-stayed bridge cantilever assembling device according to claim 2, characterized in that: The first drive mechanism includes a first motor (15), one end of the output shaft of the first motor (15) penetrates the inside of the outer shell (4) and is connected with the first bidirectional screw rod (16), one end of the first bidirectional screw rod (16) is rotatably connected with the first bearing seat (19), the back side of the first bearing seat (19) is fixedly connected with the outer shell (4), the outside of the first bidirectional screw rod (16) is connected with a pair of first ball nut pairs (18), the outside of the first ball nut pairs (18) is fixedly connected with the first U-shaped frame (5).

4. The steel structure cable-stayed bridge cantilever assembling device according to claim 3, characterized in that: The top of the two shorter arms of the first U-shaped frame (5) is provided with a pair of slide holes (25), the inside of the slide hole (25) is slidably connected with the slide rod (17), the two ends of the slide rod (17) are fixedly connected with the side wall of the first through hole (20).

5. The steel structure cable-stayed bridge cantilever assembling device according to claim 1, characterized in that: The second driving mechanism comprises a second motor (23), one end of the output shaft of the second motor (23) is connected with a second bidirectional screw rod (28) penetrating through the inside of the first U-shaped frame (5), one end of the second bidirectional screw rod (28) is rotatably connected with a second bearing seat (26), the back side of the second bearing seat (26) is fixedly connected with the first U-shaped frame (5), the outer side of the second bidirectional screw rod (28) is connected with a pair of second ball nut pairs (27), and the outer side of the second ball nut pair (27) is fixedly connected with a fixed sleeve (24).

6. The steel structure cable-stayed bridge cantilever assembling device according to claim 1, characterized in that: Both sides of the first U-shaped frame (5) are connected with slide rails (21), the outer sides of the slide rails (21) are slidably connected with a pair of sliding blocks (22), and one side of the sliding block (22) is fixedly connected with the second U-shaped frame (6).

7. The steel structure cable-stayed bridge cantilever assembling device according to claim 1, characterized in that: The upper side of the base (7) is connected with a pair of triangular frames (10) on the left side of the winch (9), the top parts of the triangular frames (10) are respectively connected with first and second stay cables (11) and (12), one end of the first stay cable (11) is fixedly connected with the base (7), and one end of the second stay cable (12) is fixedly connected with the lifting tower (1).

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