A box girder steel strand threading trolley and threading method thereof

Abstract

The invention discloses a box girder steel strand bundle threading trolley and a bundle threading method thereof, the trolley comprises a moving vehicle, two groups of U-shaped channel steel columns, a lifting mechanism arranged on each group of U-shaped channel steel columns, a lifting frame arranged in the two groups of U-shaped channel steel columns and a bundle threading mechanism arranged on the lifting frame; the bundle threading mechanism comprises two groups of chain transmission bundle threading mechanisms arranged in the lifting frame, an auxiliary bundle threading mechanism and a limit support member located at the front end of the chain transmission bundle threading mechanism, and a lateral adjustment mechanism for driving the two groups of chain transmission bundle threading mechanisms to move or open and close; the U-shaped channel steel column drives the lifting frame and the bundle threading mechanism to rise and fall along the height direction of the U-shaped channel steel column through the lifting chain condition; a feeding mechanism is arranged on the moving vehicle; the method comprises: 1. moving the box girder steel strand bundle threading trolley; 2. feeding the box girder steel strand; 3. adjusting the bundle threading mechanism; 4. threading the box girder steel strand. The invention can quickly complete the box girder steel strand bundle threading of the box girder, thereby improving the construction efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of box girder steel strand bundle threading, and in particular relates to a box girder steel strand bundle threading trolley and a bundle threading method thereof. Background Art

[0002] In the manufacturing of railway prefabricated box girders, after concrete pouring and demoulding, it is necessary to go through processes such as strand threading, tensioning, grouting, strand cutting, anchor hole roughening and plugging. Among them, strand threading is an indispensable process for box girder prefabrication. At present, the strand threading of box girder steel strands is done manually, which has high labor intensity, low operating efficiency and high-altitude operations.

[0003] Subsequently, the box girder steel strand bundle threading equipment appeared. However, the current box girder steel strand bundle threading equipment requires a lot of manual assistance, which increases safety hazards. Moreover, when threading steel strands at different heights, the height cannot be adjusted, and it is not suitable for threading operations at different heights.

[0004] Therefore, there is a lack of a reasonably designed box girder steel strand bundle threading trolley and bundle threading method, which can realize the loading and bundle threading of steel strands through a loading mechanism, a lifting mechanism and a bundle threading mechanism, and can realize bundle threading operations at different heights, thereby improving the box girder steel strand bundle threading efficiency, bundle threading quality and safety. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a box girder steel strand bundle threading trolley in view of the deficiencies in the above-mentioned prior art. The trolley has a reasonable design and can realize the loading and bundle threading of steel strands through a loading mechanism, a lifting mechanism and a bundle threading mechanism, and can realize bundle threading operations at different heights, thereby improving the box girder steel strand bundle threading efficiency, bundle threading quality and safety.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a box girder steel strand threading trolley, comprising a moving vehicle, a feeding mechanism, two groups of U-shaped channel steel columns symmetrically arranged on the moving vehicle, a lifting mechanism arranged on each group of the U-shaped channel steel columns, a lifting frame arranged in the two groups of the U-shaped channel steel columns and synchronously lifted and lowered with the lifting mechanism, and a threading mechanism arranged on the lifting frame;

[0007] The beam-threading mechanism comprises two groups of chain transmission beam-threading mechanisms arranged in the lifting frame, an auxiliary beam-threading mechanism arranged at the front end of the chain transmission beam-threading mechanism, a limit support member arranged at the rear end of the chain transmission beam-threading mechanism, and a lateral adjustment mechanism for driving the two groups of chain transmission beam-threading mechanisms to move or open and close;

[0008] The lifting chain conditions in the lifting mechanism drive the lifting frame and the beam-threading mechanism to rise and fall along the height direction of the U-shaped channel steel column.

[0009] The above-mentioned box girder steel strand threading trolley has two U-shaped channel steel columns in each group, and the lower parts of the two U-shaped channel steel columns are provided with support legs, and the support legs include square steel sleeves provided at the lower parts of the two U-shaped channel steel columns, a square rod with one end extending into the square steel sleeve and a leg square steel connected to the other end of the square rod, and a leg oil cylinder extending into the leg square steel and connected to the bottom of the leg square steel and a lower telescopic oil cylinder for adjusting the extension length of the square rod, and a support foot is provided at the bottom end of the piston rod of the leg oil cylinder;

[0010] A telescopic steel pipe is arranged between the U-shaped channel steel column and the supporting leg square steel.

[0011] The above-mentioned box girder steel strand threading trolley, the lifting mechanism includes a lifting rail arranged in the U-shaped channel steel column and arranged along the height direction of the U-shaped channel steel column, a lifting slider arranged on the lifting rail, and a lifting beam connected to the lifting slider and arranged near the opening of the U-shaped channel steel column, and a lifting hydraulic cylinder arranged between the top of the moving vehicle and the lifting beam, the lifting chain condition is arranged on the lifting beam, and the lifting hydraulic cylinder is located between the two U-shaped channel steel columns;

[0012] The lifting chain comprises a sprocket rotatably mounted on the top of the lifting beam and a lifting chain matched with the sprocket, one end of the lifting chain is fixedly arranged on the top of the moving vehicle, and the other end of the lifting chain is connected to the top of the lifting frame after passing around the sprocket.

[0013] The above-mentioned box girder steel strand threading trolley, the feeding mechanism includes a front fixed pulley arranged at the front end of the chain drive threading mechanism, a lower fixed pulley arranged directly below the front fixed pulley and installed at the bottom of the side of the moving vehicle, and a winch arranged in the moving vehicle, and a bottom fixed pulley is arranged at the bottom of the moving vehicle near the winch.

[0014] The above-mentioned box girder steel strand threading trolley, the chain transmission threading mechanism comprises a lower mounting plate, an upper mounting plate arranged on the lower mounting plate, and a sprocket chain assembly arranged between the upper mounting plate and the lower mounting plate, and a plurality of clamping blocks are arranged on the two groups of the sprocket chain assemblies;

[0015] The sprocket chain assembly includes a driving sprocket component, an intermediate transmission sprocket component and a tensioning sprocket component arranged between an upper mounting plate and a lower mounting plate, and a chain that meshes and transmits the driving sprocket component, the intermediate transmission sprocket component and the tensioning sprocket component, and the clamping block component is arranged on the chain and rotates with the chain.

[0016] The above-mentioned box girder steel strand threading trolley, the driving sprocket member includes a hydraulic motor located below the lower mounting plate, a reducer drivingly connected to the output shaft of the hydraulic motor, a driving sprocket sleeved on the output shaft of the reducer and rotating synchronously, and an extended support shaft extending into the driving sprocket and rotating synchronously, and the extended end of the extended support shaft is rotatably arranged on the upper mounting plate;

[0017] There are multiple intermediate transmission sprockets, which are arranged along the length direction of the upper mounting plate and the lower mounting plate, and each intermediate transmission sprocket comprises an intermediate shaft installed between the lower mounting plate and the upper mounting plate and an intermediate sprocket rotatably sleeved on the intermediate shaft;

[0018] The tensioning sprocket assembly includes a tensioning shaft, a tensioning sprocket rotatably mounted on the tensioning shaft, an upper tensioning member installed at the upper end of the tensioning shaft, and a lower tensioning member installed at the lower end of the tensioning shaft. The lower tensioning member and the upper tensioning member drive the tensioning shaft to move away from or closer to the intermediate shaft.

[0019] The above-mentioned box girder steel strand threading trolley, the upper tensioning member includes an upper sleeve adjustment seat arranged at the upper end of the tensioning shaft, a fixed seat arranged at the top of the upper mounting plate, and an upper adjustment screw inserted in the fixed seat and the upper sleeve adjustment seat and threadedly connected, and there is a gap between the upper sleeve adjustment seat and the fixed seat;

[0020] The lower tensioning member comprises a lower sleeve adjustment seat arranged at the lower end of the tensioning shaft and a lower adjustment screw rod embedded in the lower mounting plate and extending into the lower sleeve adjustment seat; the chain engagement sleeve is arranged on the driving sprocket, the intermediate sprocket and the tensioning sprocket to realize transmission connection;

[0021] Each of the clamping blocks includes a connecting plate connected to the chain, an arc block 1 and an arc block 2 arranged on the connecting plate, an arc block 2 is arranged between two adjacent arc blocks 1 on a single chain, and the arc block 1 and the arc block 2 at corresponding positions on the two chains form a bundle passage for the box girder steel strands to pass through.

[0022] The above-mentioned box girder steel strand threading trolley, the lateral adjustment mechanism includes a lower hydraulic cylinder connected between the bottoms of the two lower mounting plates, a lateral hydraulic cylinder connected between one lower mounting plate and the lifting frame, and a slide rail member for sliding the two lower mounting plates;

[0023] The slide rail member includes a front support plate and a rear support plate arranged in the lifting frame and located at both ends of the lower mounting plate, and horizontal slide rails arranged on the front support plate and the rear support plate, and horizontal sliders matching the horizontal slide rails are arranged at the bottom of both ends of the lower mounting plate;

[0024] The limit support member includes two support plates symmetrically and obliquely arranged at the rear end of the lifting frame, an adjusting cylinder arranged at the rear end of the lifting frame and the middle of the support plates, a rear connecting plate connected to the rear ends of the two support plates, and a rear support rod arranged on the rear connecting plate and two vertical limit rods symmetrically arranged on the rear connecting plate and located in front of both ends of the rear support rod; a front support rod is arranged at the rear end of the lifting frame.

[0025] The above-mentioned box girder steel strand threading trolley, the auxiliary threading mechanism includes an extension plate arranged at the front ends of the two lower mounting plates, an auxiliary slide rail member arranged on the extension plate, and a front end limit clamping member arranged on the auxiliary slide rail member, and a front end hydraulic cylinder driving the front end limit clamping member to slide along the auxiliary slide rail member toward or away from the chain transmission threading mechanism;

[0026] The front end limit clamping member includes a front end bottom plate, two end seats symmetrically arranged at both ends of the front end bottom plate and a top plate connected between the tops of the two end seats, as well as two lower arc blocks arranged on the front end bottom plate and an upper cross arc block arranged above the two lower arc blocks, a beam passing channel is formed between the lower arc blocks and the upper cross arc block, an upper hydraulic cylinder is arranged on the top plate, a piston rod end of the upper hydraulic cylinder is connected to the top end of the upper cross arc block, and the upper hydraulic cylinder drives the upper cross arc block to move up and down;

[0027] The auxiliary slide rail member includes two front-end slide rails symmetrically arranged on the extension plate and two front-end sliders sleeved on the front-end slide rails. The bottoms of both ends of the front-end bottom plate are connected to the front-end sliders. The front part of the extension plate is provided with a front extension plate for supporting the bottom of the protruding end of the front-end slide rail. An extension bracket is connected to the end seat. The fixed end of the front-end hydraulic cylinder is installed on the extension plate, and the telescopic end of the front-end hydraulic cylinder is installed on the extension bracket. The telescopic end of the front-end hydraulic cylinder drives the front-end limit clamp to slide along the front-end slide rail.

[0028] At the same time, a method for a box girder steel strand threading trolley to thread a box girder steel strand is provided, and the method comprises the following steps:

[0029] Step 1: Movement of the box girder steel strand threading trolley:

[0030] The box girder steel strand threading trolley is moved into position by a mobile vehicle, and the supporting legs are supported on the ground;

[0031] Step 2: Loading of box girder steel strands:

[0032] Step 201, the lifting hydraulic cylinder contracts, the lifting hydraulic cylinder contracts to drive the lifting beam down, and drives the lifting frame and the beam threading mechanism to synchronously descend with the lifting beam through the lifting chain condition, until the bottom of the beam threading mechanism is in contact with the moving vehicle;

[0033] Step 202: driving the two groups of chain transmission beam-threading mechanisms away from each other through the lateral adjustment mechanism, wherein the distance between the two groups of chain transmission beam-threading mechanisms is greater than the diameter of the steel strand;

[0034] Step 203, extend the free end of the steel wire rope on the winch through the bottom fixed pulley, the lower fixed pulley, the front fixed pulley and the beam threading passages of the two chain drive beam threading mechanisms, sleeve a pull head on the end of the steel strand, and hook the free end of the steel wire rope on the pull head;

[0035] Step 204, the winch works to wind the steel wire rope, and the steel wire rope drives the steel strand through the sleeve pull head to sequentially pass through the limit support, the threading channels of the two chain transmission threading mechanisms, and the threading channel of the auxiliary threading mechanism, until the end of the steel strand extends out of the auxiliary threading mechanism;

[0036] Step 205: the winch stops working and the sleeve pull head is disconnected from the free end of the wire rope;

[0037] Step 3: Adjustment of the threading mechanism:

[0038] Step 301, driving the two groups of chain transmission and beam-threading mechanisms to approach each other through the lateral adjustment mechanism until the two groups of chain transmission and beam-threading mechanisms clamp the steel strands;

[0039] Step 302, the lifting hydraulic cylinder is extended, the lifting hydraulic cylinder extends to push the lifting beam up, and the lifting frame and the beam-threading mechanism are driven to rise synchronously with the lifting beam through the lifting chain condition, until the height of the beam-threading mechanism meets the height requirement of the anchor hole;

[0040] Step 303, driving the two sets of chain transmission bundle-threading mechanisms and the clamped steel strands to move laterally through the transverse adjustment mechanism until the steel strands are aligned with the anchor holes;

[0041] Step 4: Installation of box girder steel strands:

[0042] Step 401, two chain transmission bundle-threading mechanisms work, and the chains in the chain transmission bundle-threading mechanisms rotate, and the rotation of the chains drives the clamped steel strands to move forward, and the front end of the steel strand with the sleeve puller penetrates into one end of the anchor hole;

[0043] Step 402, repeating step 401, the front end of the steel strand with the sleeve puller moves along the anchor hole and passes through the bundle;

[0044] Step 403, during the process of the front end of the steel strand with the sleeve pull head moving along the anchor hole and being bundled, when the rear end of the steel strand detaches from the chain transmission bundle-threading mechanism, the steel strand continues to be bundled through the auxiliary bundle-threading mechanism until the front end of the steel strand with the sleeve pull head extends out of the other end of the anchor hole, completing the bundling of the steel strand and removing the sleeve pull head.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. The present invention is provided with a lifting mechanism to drive the lifting frame and the bundle threading mechanism to lift and lower through the lifting chain conditions, so as to realize the height adjustment of the bundle threading mechanism. On the one hand, it is to lower the bundle threading mechanism to a low point to facilitate the threading and loading of the steel strands; on the other hand, it is to raise the steel strands after loading, so as to meet the needs of threading the strands in anchor holes at different heights.

[0047] 2. The present invention is provided with a lateral adjustment mechanism, which can not only drive the two sets of chain drive bundle-threading mechanisms to move along the width direction of the lifting frame to realize the centering of the anchor holes of the steel strands; but also can realize the increase or decrease of the distance between the two sets of chain drive bundle-threading mechanisms, so that the distance between the two sets of chain drive bundle-threading mechanisms is increased to realize the steel strand bundle-threading requirements, and can also reduce the distance between the two sets of chain drive bundle-threading mechanisms to clamp the threaded steel strands, thereby improving adaptability.

[0048] 3. The auxiliary bundle threading mechanism is provided in the present invention so that when the rear end of the steel strand is separated from the chain transmission bundle threading mechanism, the auxiliary bundle threading mechanism will continue to thread the steel strands, thereby avoiding manual auxiliary bundle threading of the box girder steel strands and further improving the bundle threading quality.

[0049] 4. The present invention is provided with a feeding mechanism to achieve the loading of the steel strands between two sets of chain transmission bundle-threading mechanisms and extend the end of the auxiliary bundle-threading mechanism, thereby reducing the complexity of manual loading and making loading convenient and fast.

[0050] 5. The present invention is provided with two chain transmission bundle-threading mechanisms, which drive the clamped steel strands to move forward in the anchor holes, thereby realizing bundle threading, improving the bundle threading efficiency of the box girder steel strands, and avoiding the steel strands from being entangled with each other during bundle threading.

[0051] 6. The box girder steel strand threading method of the present invention has reasonable design, high construction efficiency, wide adaptability and meets construction requirements.

[0052] In summary, the present invention is reasonably designed, and realizes the loading and bundling of steel strands through the loading mechanism, the lifting mechanism and the bundling mechanism, and can realize the bundling operation at different heights, thereby improving the bundling efficiency, bundling quality and safety of the box girder steel strands.

[0053] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a structural schematic diagram of the box girder steel strand threading trolley of the present invention.

[0055] Figure 2 It is a structural schematic diagram of the bundle threading mechanism of the box girder steel strand bundle threading trolley of the present invention.

[0056] Figure 3It is a structural schematic diagram of the chain transmission bundle threading mechanism of the box girder steel strand bundle threading trolley of the present invention.

[0057] Figure 4 It is a schematic structural diagram of the clamping blocks of the box girder steel strand threading trolley of the present invention.

[0058] Figure 5 It is a structural schematic diagram of the lower mounting plate of the box girder steel strand threading trolley of the present invention.

[0059] Figure 6 It is a structural schematic diagram of the lower mounting plate, the upper mounting plate and the extension plate of the box girder steel strand threading trolley of the present invention.

[0060] Figure 7 It is a structural schematic diagram of the transverse adjustment mechanism and the slide rail member of the box girder steel strand threading trolley of the present invention.

[0061] Figure 8 It is a structural schematic diagram of the auxiliary bundle threading mechanism of the box girder steel strand bundle threading trolley of the present invention.

[0062] Fig. 9 The figure is a flowchart of the method of the present invention.

[0063] Description of reference numerals:

[0064] 1—Lifting chain condition; 101—Lifting chain; 102—Sprocket;

[0065] 103—mounting ear seat; 2—support leg; 201—square steel sleeve;

[0066] 202—square rod; 203—lower telescopic cylinder; 204—outrigger square steel;

[0067] 205—outrigger oil cylinder; 206—outrigger; 207—lower mounting seat 1;

[0068] 208—second connecting ear; 4—lower hydraulic cylinder;

[0069] 41—lower mounting seat 2; 42—connecting ear; 43—transverse hydraulic cylinder;

[0070] 5—telescopic steel pipe; 51—inner steel pipe; 52—outer sleeve;

[0071] 53—pin shaft; 6—slide rail; 61—front support plate;

[0072] 62—rear support plate; 63—horizontal slide block; 64—horizontal slide rail;

[0073] 7—chain transmission beam threading mechanism; 71—upper mounting plate; 711—upper adjustment hole;

[0074] 72—lower mounting plate; 721—first lower mounting hole; 722—second lower mounting hole;

[0075] 723—lower adjustment hole; 724—lower small through slot; 725—lower large through slot;

[0076] 73—chain; 731—chain folding plate; 74—driving sprocket;

[0077] 741—hydraulic motor; 742—reducer; 743—driving sprocket;

[0078] 744—Extended support shaft; 745—Bearing; 746—Bearing seat;

[0079] 75—intermediate transmission sprocket; 751—intermediate shaft; 752—intermediate sprocket;

[0080] 76—tensioning sprocket; 761—tensioning shaft; 762—tensioning sprocket;

[0081] 763—upper sleeve adjustment seat; 764—upper adjustment screw; 765—fixed seat;

[0082] 766—lower adjusting screw; 767—lower sleeve adjusting seat; 77—clamping block;

[0083] 771—arc block 1; 772—arc block 2; 773—connecting plate;

[0084] 78—extension plate; 8—lifting frame; 81—frame slide block;

[0085] 9—auxiliary beam threading mechanism; 91—front hydraulic cylinder; 92—extension bracket;

[0086] 93-end seat; 94-front end base plate; 95-front end slider;

[0087] 96—front end slide rail; 97—front extension plate; 98—top plate;

[0088] 99—upper hydraulic cylinder; 910—lower arc block; 911—upper cross arc block;

[0089] 912—rear mounting seat; 10—front support rod; 1001—vertical ear plate;

[0090] 11—front fixed pulley; 12—lower fixed pulley; 13—hydraulic oil tank;

[0091] 142—bottom base plate; 14—U-shaped channel steel column;

[0092] 15—diagonal brace; 16—mobile vehicle; 17—control cabinet;

[0093] 18—top reinforcement beam; 19—reinforcement crossbar; 20—lifting slide rail;

[0094] 21—support plate; 22—adjusting cylinder; 23—rear connecting plate;

[0095] 24—vertical limit rod; 25—lifting beam; 26—lifting hydraulic cylinder;

[0096] 27—Rear support rod. DETAILED DESCRIPTION

[0097] like Figures 1 to 8 The box girder steel strand threading trolley shown in the figure comprises a moving vehicle 16, a feeding mechanism, two groups of U-shaped channel steel columns 14 symmetrically arranged on the moving vehicle 16, a lifting mechanism arranged on each group of the U-shaped channel steel columns 14, a lifting frame 8 arranged in the two groups of the U-shaped channel steel columns 14 and lifted and lowered synchronously with the lifting mechanism, and a threading mechanism arranged on the lifting frame 8;

[0098] The beam-threading mechanism includes two groups of chain transmission beam-threading mechanisms 7 arranged in the lifting frame 8, an auxiliary beam-threading mechanism 9 arranged at the front end of the chain transmission beam-threading mechanism 7, and a limit support member arranged at the rear end of the chain transmission beam-threading mechanism 7, and a lateral adjustment mechanism for driving the two groups of chain transmission beam-threading mechanisms 7 to move or open and close;

[0099] The lifting chain condition 1 in the lifting mechanism drives the lifting frame 8 and the beam-threading mechanism to rise and fall along the height direction of the U-shaped channel steel column 14 .

[0100] In this embodiment, the number of each group of U-shaped channel steel columns 14 is two, and the lower part of the two U-shaped channel steel columns 14 is provided with a support leg 2, and the support leg 2 includes a square steel sleeve 201 provided at the lower part of the two U-shaped channel steel columns 14, a square rod 202 with one end extending into the square steel sleeve 201 and a leg square steel 204 connected to the other end of the square rod 202, and a leg oil cylinder 205 extending into the leg square steel 204 and connected to the bottom of the leg square steel 204 and a lower telescopic oil cylinder 203 for adjusting the extension length of the square rod 202, and a support foot 206 is provided at the bottom end of the piston rod of the leg oil cylinder 205;

[0101] A telescopic steel pipe 5 is arranged between the U-shaped channel steel column 14 and the supporting leg square steel 204 .

[0102] In this embodiment, the lifting mechanism includes a lifting rail 20 arranged in the U-shaped channel steel column 14 and arranged along the height direction of the U-shaped channel steel column 14, a lifting slider arranged on the lifting rail 20, and a lifting beam 25 connected to the lifting slider and arranged close to the opening of the U-shaped channel steel column 14, and a lifting hydraulic cylinder 26 arranged between the top of the mobile vehicle 16 and the lifting beam 25, the lifting chain condition 1 is arranged on the lifting beam 25, and the lifting hydraulic cylinder 26 is located between the two U-shaped channel steel columns 14;

[0103] The lifting chain condition 1 includes a sprocket 102 rotatably installed on the top of the lifting beam 25 and a lifting chain 101 cooperating with the sprocket 102. One end of the lifting chain 101 is fixedly set on the top of the mobile vehicle 16, and the other end of the lifting chain 101 is connected to the top of the lifting frame 8 after bypassing the sprocket 102.

[0104] In this embodiment, the feeding mechanism includes a front fixed pulley 11 arranged at the front end of the chain drive bundle threading mechanism 7, a lower fixed pulley 12 arranged directly below the front fixed pulley 11 and installed at the bottom of the side of the mobile vehicle 16, and a winch arranged in the mobile vehicle 16. A bottom fixed pulley is arranged at the bottom of the mobile vehicle 16 near the winch.

[0105] In this embodiment, the chain transmission threading mechanism 7 includes a lower mounting plate 72, an upper mounting plate 71 disposed on the lower mounting plate 72, and a sprocket chain assembly disposed between the upper mounting plate 71 and the lower mounting plate 72, and a plurality of clamping blocks 77 are disposed on the two groups of the sprocket chain assemblies;

[0106] The sprocket chain assembly includes a driving sprocket member 74, an intermediate transmission sprocket member 75 and a tensioning sprocket member 76 arranged between an upper mounting plate 71 and a lower mounting plate 72, and a chain 73 that meshes and transmits a transmission connection between the driving sprocket member 74, the intermediate transmission sprocket member 75 and the tensioning sprocket member 76, and the clamping block member 77 is arranged on the chain 73 and rotates with the chain 73.

[0107] In this embodiment, the driving sprocket member 74 includes a hydraulic motor 741 located below the lower mounting plate 72, a reducer 742 drivingly connected to the output shaft of the hydraulic motor 741, a driving sprocket 743 sleeved on the output shaft of the reducer 742 and rotating synchronously, and an extended support shaft 744 extending into the driving sprocket 743 and rotating synchronously, and the extended end of the extended support shaft 744 is rotatably arranged on the upper mounting plate 71;

[0108] There are multiple intermediate transmission sprockets 75, which are arranged along the length direction of the upper mounting plate 71 and the lower mounting plate 72. Each intermediate transmission sprocket 75 includes an intermediate shaft 751 installed between the lower mounting plate 72 and the upper mounting plate 71 and an intermediate sprocket 752 rotatably sleeved on the intermediate shaft 751.

[0109] The tensioning sprocket member 76 includes a tensioning shaft 761, a tensioning sprocket 762 rotatably mounted on the tensioning shaft 761, an upper tensioning member installed at the upper end of the tensioning shaft 761, and a lower tensioning member installed at the lower end of the tensioning shaft 761. The lower tensioning member and the upper tensioning member drive the tensioning shaft 761 to move away from or closer to the intermediate shaft 751.

[0110] In this embodiment, the upper tensioning member includes an upper sleeve adjustment seat 763 arranged at the upper end of the tensioning shaft 761, a fixed seat 765 arranged at the top of the upper mounting plate 71, and an upper adjustment screw 764 passing through the fixed seat 765 and the upper sleeve adjustment seat 763 and threadedly connected, and there is a gap between the upper sleeve adjustment seat 763 and the fixed seat 765;

[0111] The lower tensioning member includes a lower sleeve adjustment seat 767 arranged at the lower end of the tensioning shaft 761 and a lower adjustment screw 766 embedded in the lower mounting plate 72 and extending into the lower sleeve adjustment seat 767; the chain 73 is meshingly sleeved on the driving sprocket 743, the intermediate sprocket 752 and the tensioning sprocket 762 to realize transmission connection;

[0112] Each of the clamping blocks 77 includes a connecting plate 773 connected to the chain 73, an arc block 1 771 and an arc block 2 772 arranged on the connecting plate 773, and there is an arc block 2 772 between two adjacent arc blocks 1 771 on a single chain 73. The arc blocks 1 771 and arc blocks 2 772 at corresponding positions on the two chains 73 form a bundle passage for the box girder steel strands to pass through.

[0113] In this embodiment, the lateral adjustment mechanism includes a lower hydraulic cylinder 4 connected between the bottoms of the two lower mounting plates 72, a lateral hydraulic cylinder 43 connected between one lower mounting plate 72 and the lifting frame 8, and a slide rail member 6 for the two lower mounting plates 72 to slide;

[0114] The slide rail member 6 includes a front support plate 61 and a rear support plate 62 disposed in the lifting frame 8 and located at both ends of the lower mounting plate 72, and a horizontal slide rail 64 disposed on the front support plate 61 and the rear support plate 62. The bottom of both ends of the lower mounting plate 72 is provided with a horizontal slider 63 that matches the horizontal slide rail 64.

[0115] The limiting support member includes two support plates 21 symmetrically and obliquely arranged at the rear end of the lifting frame 8, an adjusting cylinder 22 arranged at the rear end of the lifting frame 8 and the middle of the support plates 21, a rear connecting plate 23 connected to the rear ends of the two support plates 21, and a rear support rod 27 arranged on the rear connecting plate 23 and two vertical limiting rods 24 symmetrically arranged on the rear connecting plate 23 and located at the front of both ends of the rear support rod 27; a front support rod 10 is arranged at the rear end of the lifting frame 8.

[0116] In this embodiment, the auxiliary beam-threading mechanism 9 includes an extension plate 78 arranged at the front ends of the two lower mounting plates 72, an auxiliary slide rail member arranged on the extension plate 78, and a front end limit clamping member arranged on the auxiliary slide rail member, and a front end hydraulic cylinder 91 that drives the front end limit clamping member to slide along the auxiliary slide rail member toward or away from the chain transmission beam-threading mechanism 7;

[0117] The front end limit clamping member includes a front end bottom plate 94, two end seats 93 symmetrically arranged at both ends of the front end bottom plate 94 and a top plate 98 connected between the tops of the two end seats 93, as well as two lower arc blocks 910 arranged on the front end bottom plate 94 and an upper cross arc block 911 arranged above the two lower arc blocks 910, a beam-through channel is formed between the lower arc blocks 910 and the upper cross arc blocks 911, an upper hydraulic cylinder 99 is arranged on the top plate 98, the piston rod end of the upper hydraulic cylinder 99 is connected to the top end of the upper cross arc block 911, and the upper hydraulic cylinder 99 drives the upper cross arc block 911 to move up and down;

[0118] The auxiliary slide rail component includes two front end slide rails 96 symmetrically arranged on the extension plate 78 and two front end sliders 95 sleeved on the front end slide rails 96. The bottoms of both ends of the front end bottom plate 94 are connected to the front end sliders 95. The front part of the extension plate 78 is provided with a front extension plate 97 for supporting the bottom of the protruding end of the front end slide rail 96. The end seat 93 is connected with an extension bracket 92. The fixed end of the front end hydraulic cylinder 91 is installed on the extension plate 78, and the telescopic end of the front end hydraulic cylinder 91 is installed on the extension bracket 92. The telescopic end of the front end hydraulic cylinder 91 drives the front end limit clamp to slide along the front end slide rail 96.

[0119] In this embodiment, during actual use, a control cabinet 17 and a hydraulic oil tank 13 are provided on the mobile vehicle 16. The control cabinet 17 is provided with a controller for controlling the lower telescopic cylinder 203, the leg cylinder 205, the lifting hydraulic cylinder 26, the adjusting cylinder 22, the front hydraulic cylinder 91, the hydraulic motor 741, the upper hydraulic cylinder 99, the transverse hydraulic cylinder 43 and the lower hydraulic cylinder 4. The hydraulic oil tank 13 provides hydraulic oil for telescopic operation.

[0120] In this embodiment, in actual use, a first connecting ear is provided at the top of the square steel sleeve 201, a second connecting ear 208 is provided at the connection between the protruding end of the square rod 202 and the support leg square steel 204, the cylinder body end of the lower telescopic cylinder 203 is hinged to the first connecting ear, and the piston rod end of the lower telescopic cylinder 203 is hinged to the second connecting ear 208.

[0121] In this embodiment, in actual use, the telescopic steel tube 5 includes an outer sleeve 52 and an inner steel tube 51 with one end extending into the outer sleeve 52 , and a pin shaft 53 is inserted into the outer sleeve 52 and the inner steel tube 51 .

[0122] In this embodiment, in actual use, a lower mounting seat 207 is provided on the side of the protruding end of the square rod 202, the bottom end of the outer sleeve 52 is hinged to the lower mounting seat 207, an upper connecting seat is provided on the U-shaped channel steel column 14, and the upper end of the inner steel pipe 51 is hinged to the upper connecting seat.

[0123] In this embodiment, in actual use, a reinforcing L-shaped rod is provided between the bottom of the extended end of the square rod 202 and the outer side wall of the supporting leg square steel 204 .

[0124] In this embodiment, in actual use, the sides of the two square steel sleeves 201 that are close to each other are fixedly connected to the outer side wall of the U-shaped channel steel column 14.

[0125] In this embodiment, in actual use, the openings of the four U-shaped channel steel columns 14 are all arranged toward the beam threading mechanism, so as to facilitate the arrangement of the lifting rails 20 .

[0126] In this embodiment, when actually used, the outer surfaces of the two U-shaped channel steel columns 14 are provided with a plurality of reinforcing cross bars 19 arranged along the height direction thereof. The bottoms of the two U-shaped channel steel columns 14 are provided with a bottom base plate 142 mounted on the moving vehicle 16 .

[0127] In this embodiment, it should be noted that a lifting ring is provided on the top of the lifting frame 8 to cooperate with the lifting chain 101, which is not shown in the figure. The lifting slider is not shown in the figure. Figure 1 Only a portion of the upper lifting chain 101 is shown to facilitate viewing of the overall view.

[0128] In this embodiment, when actually used, the mobile vehicle 16 is provided with a diagonal support rod 15 connected to the U-shaped channel steel column 14 .

[0129] In this embodiment, in actual use, the fixed end of the lifting hydraulic cylinder 26 is installed on the top of the mobile vehicle 16, and a ring plate connecting ear is provided in the middle of the lifting beam 25, and the piston rod end of the lifting hydraulic cylinder 26 is connected to the ring plate connecting ear.

[0130] In this embodiment, in actual use, two frame sliders 81 are provided at the four corners of both sides of the lifting frame 8, which cooperate with the lifting rail 20, thereby improving the sliding stability. A mounting ear seat 103 for the sprocket wheel 102 to be rotatably mounted is provided at the top of the lifting beam 25.

[0131] In this embodiment, when actually used, the front fixed pulley 11 is arranged at the middle of the front end of the extension plate 78. The bottom fixed pulley is located at the bottom of the mobile vehicle 16, not shown in the figure, in order to guide the wire rope to be wound on the winch and avoid wear at the bend of the wire rope.

[0132] In this embodiment, in actual use, the lower mounting plate 72 is provided with a first lower mounting hole 721 for the output shaft of the reducer 742 to pass through, a second lower mounting hole 722 for the lower end of the intermediate shaft 751 to be inserted and installed, and a lower adjustment hole 723 for the tensioning shaft 761 to move. The lower mounting plate 72 is provided with a connecting groove for the lower adjusting screw 766 to pass through, and the connecting groove includes a lower large through groove 725 and a lower small through groove 724 connected to the lower large through groove 725 in sequence, and the lower small through groove 724 is connected to the lower adjustment hole 723. The nut end of the lower adjusting screw 766 is clamped at the connecting step between the lower large through groove 725 and the lower small through groove 724, and the screw end of the lower adjusting screw 766 is threadedly inserted into the lower sleeve adjustment seat 767, and an open groove is provided between the lower large through groove 725 and the end surface of the lower mounting plate 72.

[0133] In this embodiment, in actual use, a plurality of upper mounting holes are provided on the top of the upper mounting plate 71 , a bearing seat 746 is passed through the upper mounting holes, and the protruding end of the extended support shaft 744 is rotatably mounted in the bearing seat 746 via a bearing 745 .

[0134] In this embodiment, in actual use, the lower end of the intermediate shaft 751 is installed on the lower mounting plate 72, and a shaft sleeve seat for mounting the upper end of the intermediate shaft 751 is penetrated in the upper mounting plate 71, and the shaft sleeve seat is also penetrated in the upper mounting hole.

[0135] In this embodiment, during actual use, a chain folding plate 731 is provided on the chain 73 to connect the chain folding plate 731 and the connecting plate 773 to achieve installation of the clamping block 77.

[0136] In this embodiment, during actual use, the intermediate shaft 751 is stationary, and the intermediate sprocket 752 can rotate relative to the intermediate shaft 751 along with the chain 73 .

[0137] In this embodiment, in actual use, the upper mounting plate 71 is provided with an upper adjustment hole 711 for the upper sleeve adjustment seat 763 to move. The upper adjustment hole 711 and the lower adjustment hole 723 are the same and are both waist-shaped holes. The tensioning shaft 761 moves in a square along the length of the upper adjustment hole 711 and the lower adjustment hole 723.

[0138] In this embodiment, in actual use, the lower adjusting screw 766 only rotates on the lower mounting plate 72, and under the threaded connection between the lower adjusting screw 766 and the lower sleeve adjusting seat 767, the lower sleeve adjusting seat 767 moves along the length direction of the lower adjusting screw 766;

[0139] At the same time, the upper adjusting screw 764 only rotates around the fixed seat 765. When the upper adjusting screw 764 is threadedly connected with the upper sleeve adjusting seat 763, the upper sleeve adjusting seat 763 moves along the length direction of the upper adjusting screw 764. Then, the upper sleeve adjusting seat 763 and the lower sleeve adjusting seat 767 move to drive the tensioning shaft 761 and the tensioning sprocket 762 thereon to move away from or closer to the intermediate shaft 751 until the chain 73 is tensioned to meet the transmission requirements.

[0140] In this embodiment, in actual use, the extension plate 78 is integrally formed with a front end of one lower mounting plate 72 close to the auxiliary beam threading mechanism 9 , and the end of the other lower mounting plate 72 is in contact with the extension plate 78 .

[0141] In this embodiment, in actual use, the arc length of the arc groove in the arc block 1 771 is greater than the arc length of the arc groove in the arc block 2 772, which facilitates the movement of the arc block 2 772 so that its upper and lower ends can be accommodated in the arc groove surrounding the arc block 1 771, thereby increasing the adjustment range.

[0142] In this embodiment, in actual use, there is an arc block 2 772 between two adjacent arc blocks 1 771, so that the arc block 1 771 and the arc block 2 772 in two adjacent clamping blocks 77 are staggered, thereby increasing the range of the bundle threading channel to adapt to the threading of box girder steel strands of different diameters.

[0143] The cylinder body of the lower hydraulic cylinder 4 is mounted on the bottom of a lower mounting plate 72 through a lower mounting seat 2 41 , and the piston rod of the lower hydraulic cylinder 4 is connected to a connecting ear 42 arranged at the bottom of another lower mounting plate 72 .

[0144] In this embodiment, in actual use, the cylinder body of the transverse hydraulic cylinder 43 is also installed at the bottom of a lower mounting plate 72 through the lower mounting seat 2 41 , and the piston rod of the transverse hydraulic cylinder 43 is connected to the inner side of the lifting frame 8 .

[0145] In this embodiment, in actual use, the rear end of the lifting frame 8 is provided with two vertical ear plates 1001 for mounting the ends of the front support rods 10 .

[0146] In this embodiment, in actual use, the two ends of the rear support rod 27 are installed on the rear connecting plate 23 through two L-shaped ear plates, and the two ends of the rear support rod 27 are rotatably installed relative to the L-shaped ear plates; the vertical limit rod 24 is installed on the rear connecting plate 23 through a U-shaped ear seat, and the two ends of the vertical limit rod 24 are rotatably installed relative to the U-shaped ear seat.

[0147] In this embodiment, in actual use, two vertically arranged lower support plates are provided at the bottom of the front extension plate 97 , and the lower support plates extend into the bottom of the extension plate 78 , and the front extension plate 97 and the extension plate 78 are arranged flush.

[0148] In this embodiment, during actual use, the fixed end of the front hydraulic cylinder 91 is mounted on the extension plate 78 via the rear mounting seat 912 .

[0149] In this embodiment, in actual use, the extension bracket 92 can refer to the T-shape, and a triangular stiffening plate is added and a clearance hole is set.

[0150] In this embodiment, in actual use, a top reinforcement beam 18 is provided between the two groups of the U-shaped channel steel columns 14 so that the two groups of the U-shaped channel steel columns 14 are arranged to form a rectangle.

[0151] In this embodiment, in actual use, the upper mounting plate 71 is U-shaped, and the two vertical portions of the upper mounting plate 71 are connected to the lower mounting plate 72 .

[0152] like Fig. 9 As shown, a method for a box girder steel strand threading trolley to thread a box girder steel strand, the method comprising the following steps:

[0153] Step 1: Movement of the box girder steel strand threading trolley:

[0154] The box girder steel strand threading trolley is moved into position by the moving vehicle 16, and the supporting legs 2 are supported on the ground;

[0155] Step 2: Loading of box girder steel strands:

[0156] Step 201, the lifting hydraulic cylinder 26 contracts, the lifting hydraulic cylinder 26 contracts to drive the lifting beam 25 to descend, and drives the lifting frame 8 and the beam threading mechanism to descend synchronously with the lifting beam 25 through the lifting chain condition 1, until the bottom of the beam threading mechanism is in contact with the moving vehicle 16;

[0157] Step 202, driving the two groups of the chain transmission beam-threading mechanisms 7 to move away from each other through the lateral adjustment mechanism, wherein the distance between the two groups of the chain transmission beam-threading mechanisms 7 is greater than the diameter of the steel strand;

[0158] Step 203, extend the free end of the steel wire rope on the winch through the bottom fixed pulley, the lower fixed pulley 12, the front fixed pulley 11 and the beam threading channels of the two chain transmission beam threading mechanisms 7, sleeve pull heads are set on the ends of the steel strands, and the free end of the steel wire rope is hooked on the sleeve pull heads;

[0159] Step 204, the winch works to wind the steel wire rope, and the steel wire rope drives the steel strand through the sleeve pull head to sequentially pass through the limit support, the threading channels of the two chain transmission threading mechanisms 7 and the threading channels of the auxiliary threading mechanism 9, until the end of the steel strand extends out of the auxiliary threading mechanism 9;

[0160] Step 205: the winch stops working and the sleeve pull head is disconnected from the free end of the wire rope;

[0161] Step 3: Adjustment of the threading mechanism:

[0162] Step 301, driving the two groups of the chain transmission beam-threading mechanisms 7 to approach each other through the lateral adjustment mechanism until the two groups of the chain transmission beam-threading mechanisms 7 clamp the steel strands;

[0163] Step 302, the lifting hydraulic cylinder 26 extends, and the lifting hydraulic cylinder 26 extends to push the lifting beam 25 up, and drives the lifting frame 8 and the beam-threading mechanism to rise synchronously with the lifting beam 25 through the lifting chain condition 1, until the height of the beam-threading mechanism meets the height requirement of the anchor hole;

[0164] Step 303, the two sets of chain transmission bundle-threading mechanisms 7 and the clamped steel strands are driven to move laterally through the transverse adjustment mechanism until the steel strands are aligned with the anchor holes;

[0165] Step 4: Installation of box girder steel strands:

[0166] Step 401, the two chain transmission bundle-threading mechanisms 7 work, and the chain 73 in the chain transmission bundle-threading mechanism 7 rotates, and the rotation of the chain 73 drives the clamped steel strand to move forward, and the front end of the steel strand with the sleeve pull head penetrates into one end of the anchor hole;

[0167] Step 402, repeating step 401, the front end of the steel strand with the sleeve puller moves along the anchor hole and passes through the bundle;

[0168] Step 403, when the front end of the steel strand with the sleeve pull head moves along the anchor hole and is bundled, when the rear end of the steel strand detaches from the chain transmission bundle-threading mechanism 7, the steel strand is continued to be bundled through the auxiliary bundle-threading mechanism 9 until the front end of the steel strand with the sleeve pull head extends out of the other end of the anchor hole, completing the bundling of the steel strand and removing the sleeve pull head.

[0169] In this embodiment, during actual use, the inclination angle of the support plate 21 is adjusted by adjusting the oil cylinder 22 to meet the threading requirements. During loading and threading, the rear support rod 27 and the front support rod 10 support the rear end steel strand to facilitate the steel strand to enter the chain transmission threading mechanism 7, and the vertical limit rod 24 limits the steel strand to avoid dispersion of the steel strand and affect the threading effect.

[0170] In this embodiment, in actual use, the sleeve puller realizes the tightening of the ends of the steel strands to avoid the dispersion of multiple strands at the ends of the steel strands, which affects the efficiency of the bundle insertion. There is no specific limitation, as long as the tightening requirements can be met.

[0171] In this embodiment, step 1, the supporting leg 2 supports the ground, and the specific process is as follows:

[0172] The piston rod of the lower telescopic oil cylinder 203 is extended, and the extension of the lower telescopic oil cylinder 203 drives the square rod 202 to extend along the square steel sleeve 201 until the extension length of the square rod 202 meets the construction requirements; then the piston rod of the outrigger oil cylinder 205 is extended, and the extension of the piston rod of the outrigger oil cylinder 205 drives the outrigger 206 to approach the ground until the outrigger 206 is in close contact with the ground.

[0173] In this embodiment, when the lower telescopic cylinder 203 extends to drive the square rod 202 to extend along the square steel sleeve 201, the pin shaft 53 is removed to release the locking of the telescopic steel tube 5, and the inner steel tube 51 of the telescopic steel tube 5 is telescoped along the outer sleeve 52 until the extended length of the square rod 202 meets the construction requirements, and the pin shaft 53 is installed to lock the telescopic steel tube 5.

[0174] In this embodiment, step 201, the specific process is as follows:

[0175] The lifting hydraulic cylinder 26 contracts and drives the lifting beam 25 to descend in the height direction of the lifting rail 20 through the connected lifting slider. At the same time, during the descent of the lifting beam 25, when one end of the lifting chain 101 is fixed on the moving vehicle 16, the other end of the lifting chain 101 descends, driving the bundle threading mechanism and the lifting frame 8 to descend along the lifting rail 20 through the frame slider 81.

[0176] In this embodiment, step 302, the specific process is as follows:

[0177] The lifting hydraulic cylinder 26 extends, and the lifting hydraulic cylinder 26 extends to push the lifting beam 25 to rise along the height direction of the lifting slide rail 20 through the lifting slider connected thereto, so that the lifting beam 25 rises;

[0178] During the ascending process of the lifting beam 25 , when one end of the lifting chain 101 is fixedly arranged on the moving vehicle 16 , the other end of the lifting chain 101 drives the beam threading mechanism and the lifting frame 8 to ascend along the lifting rail 20 through the frame slider 81 .

[0179] In this embodiment, in step 202, the two groups of chain transmission beam-threading mechanisms 7 are driven away by the lateral adjustment mechanism, and the specific process is as follows:

[0180] The lower hydraulic cylinder 4 extends, pushing the two lower mounting plates 72 to move away from each other along the horizontal slide rail 64 through the horizontal slide block 63, and the movement of the two lower mounting plates 72 drives the two sets of chain transmission beam threading mechanisms 7 to move away from each other;

[0181] In step 301, the two groups of chain transmission beam-threading mechanisms 7 are driven to approach each other by the lateral adjustment mechanism. The specific process is as follows:

[0182] The lower hydraulic cylinder 4 contracts, driving the two lower mounting plates 72 to move closer to each other along the horizontal slide rail 64 through the horizontal slide block 63. The two lower mounting plates 72 move closer to each other, respectively driving the two sets of chain transmission beam threading mechanisms 7 to move closer to each other.

[0183] In this embodiment, step 303, the specific process is as follows:

[0184] The transverse hydraulic cylinder 43 extends and retracts, pushing the two lower mounting plates 72 to move synchronously along the horizontal slide rail 64 through the horizontal slider 63. The two lower mounting plates 72 move synchronously, driving the two sets of chain transmission bundle-threading mechanisms 7 to move horizontally as a whole along the width direction of the lifting frame 8 until the steel strands are aligned with the anchor holes.

[0185] In this embodiment, step 401, the specific process is as follows:

[0186] The hydraulic motor 741 drives the driving sprocket 743 to rotate through the reducer 742, and the driving sprocket 743 drives the chain 73 to rotate around the intermediate transmission sprocket member 75 and the intermediate sprocket 752 and the tensioning sprocket 762 on the tensioning sprocket member 76;

[0187] As the chain 73 rotates, the chain 73 conveys the clamped steel strands forward through the arc block 1 771 and the arc block 2 772, so that the chain 73 rotates while clamping the steel strands and moving them along the anchor hole to achieve bundle threading.

[0188] In this embodiment, in step 403, the steel strands are continuously bundled by the auxiliary bundle-threading mechanism 9, and the specific process is as follows:

[0189] Step 4031, the upper hydraulic cylinder 99 extends to push the upper cross arc block 911 to move close to the two lower arc blocks 910, so that the upper cross arc block 911 and the lower arc block 910 clamp the steel strand; the front hydraulic cylinder 91 extends to push the front limit clamp and the clamped steel strand to move forward along the front slide rail 96 through the front slider 95, so that the steel strand moves along the anchor hole and passes through the bundle until it reaches the required position of the front slide rail 96; wherein, the vertical part of the cross arc block 911 extends between the two lower arc blocks 910, and the horizontal part of the cross arc block 911 extends to above the lower arc block 910;

[0190] Step 4032, operate the upper hydraulic cylinder 99 to contract, drive the upper cross arc block 911 to move away from the two lower arc blocks 910, so that the upper cross arc block 911 and the lower arc block 910 release the clamping of the steel strand; then, the front hydraulic cylinder 91 contracts and drives the front limit clamp to move in the opposite direction and reset along the front slide rail 96 through the front slider 95;

[0191] Step 4033, repeat steps 4031 to 4032 multiple times until the front end of the steel strand with the sleeve pull head is extended out of the other end of the anchor hole, completing the installation of the steel strand.

[0192] In summary, the present invention is reasonably designed, and realizes the loading and bundling of steel strands through the loading mechanism, the lifting mechanism and the bundling mechanism, and can realize the bundling operation at different heights, thereby improving the bundling efficiency, bundling quality and safety of the box girder steel strands.

[0193] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A box girder steel strand threading trolley, characterized in that: It comprises a moving vehicle (16), a loading mechanism, two groups of U-shaped channel steel columns (14) symmetrically arranged on the moving vehicle (16), a lifting mechanism arranged on each group of the U-shaped channel steel columns (14), a lifting frame (8) arranged in the two groups of the U-shaped channel steel columns (14) and lifted and lowered synchronously with the lifting mechanism, and a beam threading mechanism arranged on the lifting frame (8); The beam threading mechanism comprises two groups of chain drive beam threading mechanisms (7) arranged in a lifting frame (8), an auxiliary beam threading mechanism (9) arranged at the front end of the chain drive beam threading mechanism (7), a limit support member arranged at the rear end of the chain drive beam threading mechanism (7), and a lateral adjustment mechanism for driving the two groups of chain drive beam threading mechanisms (7) to move or open and close; The lifting chain condition (1) in the lifting mechanism drives the lifting frame (8) and the beam-threading mechanism to rise and fall along the height direction of the U-shaped channel steel column (14); The chain transmission threading mechanism (7) comprises a lower mounting plate (72), an upper mounting plate (71) arranged on the lower mounting plate (72), and a sprocket chain assembly arranged between the upper mounting plate (71) and the lower mounting plate (72), wherein a plurality of clamping blocks (77) are arranged on the two sets of sprocket chain assemblies; The sprocket chain assembly comprises a driving sprocket member (74), an intermediate transmission sprocket member (75) and a tensioning sprocket member (76) arranged between an upper mounting plate (71) and a lower mounting plate (72), and a chain (73) meshingly connecting the driving sprocket member (74), the intermediate transmission sprocket member (75) and the tensioning sprocket member (76), wherein the clamping block member (77) is arranged on the chain (73) and rotates with the chain (73); The auxiliary beam threading mechanism (9) comprises an extension plate (78) arranged at the front ends of the two lower mounting plates (72), an auxiliary slide rail member arranged on the extension plate (78), a front end limit clamping member arranged on the auxiliary slide rail member, and a front end hydraulic cylinder (91) driving the front end limit clamping member to slide along the auxiliary slide rail member toward or away from the chain transmission beam threading mechanism (7); The front end limit clamping member comprises a front end bottom plate (94), two end seats (93) symmetrically arranged at both ends of the front end bottom plate (94) and a top plate (98) connected between the tops of the two end seats (93), as well as two lower arc blocks (910) arranged on the front end bottom plate (94) and an upper cross arc block (911) arranged above the two lower arc blocks (910), a beam passing channel is formed between the lower arc blocks (910) and the upper cross arc block (911), an upper hydraulic cylinder (99) is arranged on the top plate (98), a piston rod end of the upper hydraulic cylinder (99) is connected to the top end of the upper cross arc block (911), and the upper hydraulic cylinder (99) drives the upper cross arc block (911) to move up and down; The auxiliary slide rail member comprises two front end slide rails (96) symmetrically arranged on the extension plate (78) and two front end sliders (95) sleeved on the front end slide rails (96); the bottoms of both ends of the front end bottom plate (94) are connected to the front end sliders (95); a front extension plate (97) supporting the bottom of the extended end of the front end slide rail (96) is arranged at the front of the extension plate (78); an extension bracket (92) is connected to the end seat (93); a fixed end of the front end hydraulic cylinder (91) is mounted on the extension plate (78); a telescopic end of the front end hydraulic cylinder (91) is mounted on the extension bracket (92); the front end hydraulic cylinder (91) telescopes to drive the front end limit clamp to slide along the front end slide rail (96).

2. A box girder steel strand threading trolley according to claim 1, characterized in that: The number of each group of U-shaped channel steel columns (14) is two, and the lower parts of the two U-shaped channel steel columns (14) are provided with support legs (2), and the support legs (2) include a square steel sleeve (201) provided at the lower parts of the two U-shaped channel steel columns (14), a square rod (202) with one end extending into the square steel sleeve (201), and a support leg square steel (204) connected to the other end of the square rod (202), and a support leg oil cylinder (205) extending into the support leg square steel (204) and connected to the bottom of the support leg square steel (204), and a lower telescopic oil cylinder (203) for adjusting the extension length of the square rod (202), and a support foot (206) is provided at the bottom end of the piston rod of the support leg oil cylinder (205); A telescopic steel pipe (5) is provided between the U-shaped channel steel column (14) and the supporting leg square steel (204).

3. A box girder steel strand threading trolley according to claim 1, characterized in that: The lifting mechanism comprises a lifting rail (20) arranged in the U-shaped channel steel column (14) and arranged along the height direction of the U-shaped channel steel column (14), a lifting slider arranged on the lifting rail (20), and a lifting beam (25) connected to the lifting slider and arranged near the opening of the U-shaped channel steel column (14), and a lifting hydraulic cylinder (26) arranged between the top of the moving vehicle (16) and the lifting beam (25), the lifting chain condition (1) is arranged on the lifting beam (25), and the lifting hydraulic cylinder (26) is located between the two U-shaped channel steel columns (14); The lifting chain condition (1) comprises a sprocket (102) rotatably mounted on the top of the lifting beam (25) and a lifting chain (101) matched with the sprocket (102), one end of the lifting chain (101) is fixedly arranged on the top of the moving vehicle (16), and the other end of the lifting chain (101) passes around the sprocket (102) and is connected to the top of the lifting frame (8).

4. A box girder steel strand threading trolley according to claim 1, characterized in that: The feeding mechanism comprises a front fixed pulley (11) arranged at the front end of the chain transmission beam threading mechanism (7), a lower fixed pulley (12) arranged directly below the front fixed pulley (11) and mounted on the bottom of the side of the moving vehicle (16), and a winch arranged in the moving vehicle (16), wherein a bottom fixed pulley is arranged at the bottom of the moving vehicle (16) near the winch.

5. A box girder steel strand threading trolley according to claim 1, characterized in that: The driving sprocket member (74) comprises a hydraulic motor (741) located below the lower mounting plate (72), a reducer (742) drivingly connected to the output shaft of the hydraulic motor (741), a driving sprocket (743) sleeved on the output shaft of the reducer (742) and rotating synchronously, and an extended support shaft (744) extending into the driving sprocket (743) and rotating synchronously, wherein the extended end of the extended support shaft (744) is rotatably disposed on the upper mounting plate (71); There are a plurality of intermediate transmission sprocket members (75), and the plurality of intermediate transmission sprocket members (75) are arranged along the length direction of the upper mounting plate (71) and the lower mounting plate (72), and each intermediate transmission sprocket member (75) comprises an intermediate shaft (751) mounted between the lower mounting plate (72) and the upper mounting plate (71), and an intermediate sprocket (752) rotatably sleeved on the intermediate shaft (751); The tensioning sprocket member (76) comprises a tensioning shaft (761), a tensioning sprocket (762) rotatably sleeved on the tensioning shaft (761), an upper tensioning member mounted on the upper end of the tensioning shaft (761), and a lower tensioning member mounted on the lower end of the tensioning shaft (761), wherein the lower tensioning member and the upper tensioning member drive the tensioning shaft (761) to move away from or towards the intermediate shaft (751).

6. A box girder steel strand threading trolley according to claim 5, characterized in that: The upper tensioning member comprises an upper sleeve adjustment seat (763) arranged at the upper end of the tensioning shaft (761), a fixing seat (765) arranged at the top of the upper mounting plate (71), and an upper adjustment screw (764) passing through the fixing seat (765) and the upper sleeve adjustment seat (763) and threadedly connected, and a gap is provided between the upper sleeve adjustment seat (763) and the fixing seat (765); The lower tensioning member comprises a lower shaft sleeve adjustment seat (767) arranged at the lower end of the tensioning shaft (761) and a lower adjustment screw (766) embedded in the lower mounting plate (72) and extending into the lower shaft sleeve adjustment seat (767); the chain (73) is meshingly sleeved on the driving sprocket (743), the intermediate sprocket (752) and the tensioning sprocket (762) to achieve transmission connection; Each of the clamping blocks (77) comprises a connecting plate (773) connected to the chain (73), an arc block 1 (771) and an arc block 2 (772) arranged on the connecting plate (773); an arc block 2 (772) is provided between two adjacent arc blocks 1 (771) on a single chain (73); the arc blocks 1 (771) and the arc blocks 2 (772) at corresponding positions on the two chains (73) form a bundle passage for the box girder steel strands to pass through.

7. A box girder steel strand threading trolley according to claim 1, characterized in that: The lateral adjustment mechanism comprises a lower hydraulic cylinder (4) connected between the bottoms of two lower mounting plates (72), a lateral hydraulic cylinder (43) connected between one lower mounting plate (72) and a lifting frame (8), and a slide rail (6) for the two lower mounting plates (72) to slide. The slide rail member (6) comprises a front support plate (61) and a rear support plate (62) which are arranged in the lifting frame (8) and located at both ends of the lower mounting plate (72), and a horizontal slide rail (64) arranged on the front support plate (61) and the rear support plate (62); and horizontal sliding blocks (63) which cooperate with the horizontal slide rail (64) are arranged at the bottom of both ends of the lower mounting plate (72); The limiting support member comprises two support plates (21) symmetrically and obliquely arranged at the rear end of the lifting frame (8), an adjusting cylinder (22) arranged at the rear end of the lifting frame (8) and in the middle of the support plates (21), a rear connecting plate (23) connected to the rear ends of the two support plates (21), a rear support rod (27) arranged on the rear connecting plate (23), and two vertical limiting rods (24) symmetrically arranged on the rear connecting plate (23) and located at the front of both ends of the rear support rod (27); a front support rod (10) is arranged at the rear end of the lifting frame (8).

8. A method for bundling box girder steel strands using the box girder steel strand bundling trolley as claimed in claim 3, characterized in that: The method comprises the following steps: Step 1: Movement of the box girder steel strand threading trolley: The box girder steel strand threading trolley is moved into position by means of a moving vehicle (16), and the supporting legs (2) are supported on the ground; Step 2: Loading of box girder steel strands: Step 201, the lifting hydraulic cylinder (26) contracts, and the lifting hydraulic cylinder (26) contracts to drive the lifting beam (25) to descend, and drives the lifting frame (8) and the beam threading mechanism to descend synchronously with the lifting beam (25) through the lifting chain condition (1), until the bottom of the beam threading mechanism is in contact with the moving vehicle (16); Step 202, driving the two groups of the chain transmission beam-threading mechanisms (7) to move away from each other through the lateral adjustment mechanism, wherein the distance between the two groups of the chain transmission beam-threading mechanisms (7) is greater than the diameter of the steel strand; Step 203, extend the free end of the steel wire rope on the winch through the bottom fixed pulley, the lower fixed pulley (12), the front fixed pulley (11) and the bundle threading passages of the two chain drive bundle threading mechanisms (7), sleeve pull heads are sleeved on the ends of the steel strands, and the free end of the steel wire rope is hooked on the sleeve pull heads; Step 204, the winch is operated to wind the steel wire rope, and the steel wire rope drives the steel strand through the sleeve pull head to sequentially pass through the limit support, the stranding passages of the two chain transmission stranding mechanisms (7) and the stranding passage of the auxiliary stranding mechanism (9), until the end of the steel strand extends out of the auxiliary stranding mechanism (9); Step 205: the winch stops working and the sleeve pull head is disconnected from the free end of the wire rope; Step 3: Adjustment of the threading mechanism: Step 301, driving the two sets of the chain transmission beam-threading mechanisms (7) to approach each other through the lateral adjustment mechanism until the two sets of the chain transmission beam-threading mechanisms (7) clamp the steel strands; Step 302, the lifting hydraulic cylinder (26) is extended, and the lifting hydraulic cylinder (26) is extended to push the lifting beam (25) to rise, and through the lifting chain condition (1), the lifting frame (8) and the beam threading mechanism are driven to rise synchronously with the lifting beam (25), until the height of the beam threading mechanism meets the height requirement of the anchor hole; Step 303, driving the two sets of chain transmission bundle-threading mechanisms (7) and the clamped steel strands to move laterally through the transverse adjustment mechanism until the steel strands are aligned with the anchor holes; Step 4: Installation of box girder steel strands: Step 401: The two chain transmission threading mechanisms (7) work, and the chain (73) in the chain transmission threading mechanism (7) rotates, and the rotation of the chain (73) drives the clamped steel strand to move forward, and the front end of the steel strand with the sleeve pull head penetrates into one end of the anchor hole; Step 402, repeating step 401, the front end of the steel strand with the sleeve puller moves along the anchor hole and passes through the bundle; Step 403, during the process of the front end of the steel strand with the sleeve pull head moving along the anchor hole and being threaded, when the rear end of the steel strand is separated from the chain transmission threading mechanism (7), the steel strand is continued to be threaded through the auxiliary threading mechanism (9) until the front end of the steel strand with the sleeve pull head extends out of the other end of the anchor hole, completing the threading of the steel strand and removing the sleeve pull head.

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