Telescopic platform for steel bar trolley

Abstract

The telescopic platform comprises an upper telescopic platform body and a middle telescopic platform body, each of the upper telescopic platform body and the middle telescopic platform body comprises three sets of fixed plates and movable plates, the fixed plates are fixedly connected to the tops of two pieces of I-shaped steel, and frameworks are arranged at the bottoms of the movable plates. Two lateral rollers, two bottom rollers and two top rollers are arranged at the inner ends of the two sides of the movable plate, the lateral roller, the bottom roller and the top roller on one side are located on the side faces, the bottom faces and the top faces of side face grooves of the two pieces of I-shaped steel respectively, and auxiliary carrier rollers are arranged on the end faces of the I-shaped steel and abut against the bottoms of the two sides of the movable plate. The outer end of the movable plate is detachably connected with a lateral clamping groove plate, hinged double lugs are arranged at the bottom, close to the outer end, of the movable plate, the hinged double lugs are hinged to a cylinder rod of a telescopic hydraulic cylinder, and a cylinder base of the telescopic hydraulic cylinder is hinged to the walking trolley. According to the telescopic platform, top arc-shaped steel bar positioning, lateral arc-shaped steel bar positioning and lateral outermost steel bar positioning are achieved, and the steel bar binding efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel secondary lining steel bar binding equipment, and in particular relates to a telescopic platform for a steel bar trolley. Background Art

[0002] Before pouring the secondary lining of the tunnel, the steel cage needs to be arranged and tied. The current method usually uses a trolley for manual positioning and bundling. There are also clamps for positioning the steel bars. However, after the top arc steel bars are connected to the side arc steel bars, the spans on both sides are large and the length of the connected steel bars is long. The top arc steel bars, the side arc steel bars and the outermost side steel bars are difficult to position. After being suspended on both sides, it is difficult to connect to the pre-embedded steel bars at the bottom for screw connection, which seriously affects the installation efficiency. Utility Model Content

[0003] The utility model aims to provide a telescopic platform for a steel bar trolley, which can realize the positioning of auxiliary supports at both ends of the top arc-shaped steel bars and the positioning of the lateral arc-shaped steel bars, as well as the positioning of the outermost steel bars on the sides, so as to improve the efficiency of steel bar binding.

[0004] The technical scheme adopted by the utility model is a telescopic platform for a steel bar trolley, comprising an upper telescopic platform and a middle telescopic platform, the upper telescopic platform and the middle telescopic platform both comprising three groups of fixed plates and movable plates, the fixed plates are fixedly connected to the tops of two I-beams, a frame is arranged at the bottom of the movable plate, two lateral rollers, two bottom rollers and two top rollers are arranged at the inner ends of both sides of the movable plate, the lateral rollers, the bottom rollers and the top rollers on one side are respectively located at the side faces, the bottom faces and the top faces of the side grooves of the two I-beams, auxiliary rollers are arranged at the end faces of the I-beams, the auxiliary rollers are abutted against the bottom faces of both sides of the movable plate, the outer ends of the movable plates are detachably connected with lateral slot plates, hinged double ears are arranged at the bottom of the movable plate near the outer ends, the hinged holes of the hinged double ears are vertical strip holes, the hinged double ears are hinged to the cylinder rod of the telescopic hydraulic cylinder, and the cylinder seat of the telescopic hydraulic cylinder is hinged to the walking trolley.

[0005] Preferably, the overall thickness of the frame and the movable plate is less than the height of the side groove of the I-beam.

[0006] Preferably, the two I-beams of the upper telescopic platform are fixedly connected to the top of the vertical extension beam and the side of the arch vertical beam to form a cantilever structure, and the two I-beams of the lower telescopic platform are fixedly connected to the column to form a lower cantilever structure.

[0007] Preferably, the bottom roller and the top roller are symmetrically installed in a vertical groove set at the right end of the first support. The first support includes a bottom plate and vertical plates fixedly connected to the left and right sides of the right side. The two vertical plates and the bottom plate form a vertical groove. The first support is symmetrically provided with two connecting plates near the left end. The two connecting plates are symmetrically fixedly connected to the second support by bolts. The second support includes a vertically bent Z-shaped plate and a middle plate fixedly connected between the middle parts of the two Z-shaped plates. The left end of the Z-shaped plate is abutted with an adjusting screw, which is spirally connected to the adjusting seat. The adjusting seat is fixedly connected to the first support. The free end of the second support is rotatably connected to the lateral roller.

[0008] Preferably, the through hole connecting the second support to the connecting plate is a horizontal strip hole. Loosen the bolt fixing the second support, rotate the adjusting screw, and adjust the second support so that the lateral roller can contact the side of the side groove.

[0009] Preferably, the auxiliary roller is rotatably connected to one end of two horizontal auxiliary connecting plates, the auxiliary connecting plates are rotatably connected to the auxiliary hinge seat fixed at the bottom of the I-beam near the middle, and a top fixed plate and a right fixed plate are vertically connected between the two auxiliary connecting plates near the other end. The top fixed plate is spirally connected to a swing adjustment screw, the free end of the screw of the swing adjustment screw rests on the bottom surface of the I-beam, and a fastening nut is spirally connected to the swing adjustment screw, and the fastening nut is fitted on the top fixed plate.

[0010] Preferably, an auxiliary support frame is provided at the bottom of the telescopic end of the cylinder seat of the telescopic hydraulic cylinder near the cylinder rod, and the auxiliary support frame is placed on the bottom surface of the cylinder seat, and the auxiliary support frame is fixedly connected to two I-beams.

[0011] Compared with the prior art, the beneficial effect of the utility model is that a telescopic hydraulic cylinder is used to drive the movable plate to be telescopic at the bottom of the fixed plate, which is beneficial for the staff to position the auxiliary supports at both ends of the top arc-shaped steel bars and the lateral arc-shaped steel bars, as well as the outermost steel bars on the side, thereby improving the efficiency of steel bar binding.

[0012] The telescopic platform can be extended and retracted quickly and stably, and the hydraulic cylinder itself has elastic characteristics and can also play a certain buffering role. The side rollers and bottom rollers are embedded in the grooves of the I-beams, which makes the structure compact. Together with the auxiliary rollers, it can reduce the friction and noise during the pushing process of the movable plate. The rollers are located in the grooves, which can also play a certain role in reducing noise. The installation of a removable side slot plate (with the same structure as the top slot plate) can position the outermost steel bars on the side of the second lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the tunnel secondary lining steel bar binding trolley;

[0014] Figure 2This is a front view of the structure of the tunnel secondary lining reinforcement tying trolley;

[0015] Figure 3 This is a left-side structural diagram of the tunnel secondary lining reinforcement tying trolley;

[0016] Figure 4 This is a top view of the structure of the tunnel secondary lining reinforcement tying trolley;

[0017] Figure 5 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0018] Figure 6 It is a schematic diagram of the cross-sectional structure of the card slot plate installation location;

[0019] Figure 7 It is a structural schematic diagram of the joint of the card slot plate;

[0020] Figure 8 This is a schematic diagram of the structure where the support mechanism is installed;

[0021] Fig. 9 It is a schematic diagram of the auxiliary lifting mechanism structure;

[0022] Fig.10 This is a schematic diagram of the rear view structure of the movable plate where the rollers are installed;

[0023] Fig.11 This is a schematic diagram of the structure of the movable plate where the roller is installed, viewed from above;

[0024] Fig.12 A schematic diagram of the structure for installing the roller end of the movable plate;

[0025] Fig.13 for Figure 2 Enlarged structural diagram of the middle B part (where the auxiliary roller is installed);

[0026] Fig.14 It is a schematic diagram of the telescopic platform structure;

[0027] Fig.15 It is a schematic diagram of the structure of the steel bar moving mechanism;

[0028] Fig.16 This is a front view structural diagram of the locking mechanism installation location;

[0029] Fig.17 This is a schematic diagram of the rear view structure of the locking mechanism installation location;

[0030] Fig.18 This is a schematic diagram of the positioning mechanism installation. DETAILED DESCRIPTION

[0031] The present invention will be further explained below in conjunction with the accompanying drawings to facilitate better understanding by those skilled in the art.

[0032] Example 1

[0033] like Figure 1-4 And 10-14, a telescopic platform for a steel bar trolley, used for a tunnel second lining steel bar binding trolley, the steel bar binding trolley comprises a walking trolley 1 and a steel bar positioning fixture 2, the steel bar positioning fixture 2 is installed on the top of the walking trolley 1, telescopic platforms 3 are arranged on both sides of the walking trolley 1, the telescopic platforms 3 are used for leaning against the steel bars and steel bar binding operations, the steel bar positioning fixture 2 and the telescopic platform 3 support the arc-shaped steel bars 4, a lower operating platform 6 is arranged near the bottom of the walking trolley 1, which is convenient for the side second lining steel bar layout and binding, the lower operating platform 6 and the telescopic platform 3 are provided with guardrails 7 on the inner side and the front and rear sides, the front side of the walking trolley 1 is provided with, the lower operating platform 6 and the front side of the telescopic platform 3 and up to the top of the walking trolley 1 are provided with a ladder 8, the front ladder is convenient for platform extension and extension to avoid interference, and a ladder 2 9 is arranged near the middle of the lower operating platform 6.

[0034] The top steel bar positioning fixture is used to position the top arc steel bar. After connecting the lateral arc steel bar to the top arc steel bar, the longitudinal positioning of the lateral arc steel bar can be achieved. In conjunction with the telescopic platform on both sides, the lateral arc steel bar connected to the top arc steel bar can be horizontally positioned, and then adjusted to the best connection with the embedded steel bar, thereby improving installation efficiency and convenience and reducing installation difficulty.

[0035] In order to realize the auxiliary support positioning at both ends of the top arc-shaped steel bars, the positioning of the lateral arc-shaped steel bars, and the positioning of the outermost steel bars on the side, two telescopic platforms are set. The telescopic platform 3 includes an upper telescopic platform 301 and a middle telescopic platform 302. The upper telescopic platform 301 and the middle telescopic platform 302 both include three groups of fixed plates 303 and movable plates 304. The fixed plates 303 are fixedly connected to the tops of the two I-beams 305. A frame is set at the bottom of the movable plate 304. The overall thickness of the frame and the movable plate is less than the height of the side groove of the I-beam 305, so that it is convenient to embed into the side groove to achieve sliding.

[0036] The two I-beams 305 of the upper telescopic platform 301 are fixedly connected to the top of the vertical extension beam 132 and the side of the arch vertical beam 137 to form a cantilever structure. The two I-beams 305 can also play a role in reinforcing the strength and rigidity of the arch. The two I-beams 305 of the lower telescopic platform 302 are fixedly connected to the column 107 to form a lower cantilever structure. The two I-beams 305 are fixedly connected to the column 107 and the vertical extension beam 132 by cantilever diagonal braces 314 to strengthen the cantilever structure. The inner ends of both sides of the movable plate 304 are provided with two lateral rollers 306, two bottom rollers 307 and two top rollers 308. The first support 315 is symmetrically installed in the vertical groove 316 set at the right end of the first support 315. The first support 315 includes a bottom plate and vertical plates fixedly connected to the left and right sides of the right side. The two vertical plates and the bottom plate constitute the vertical groove 316. The first support 315 is symmetrically provided with two connecting plates 317 near the left end. The two connecting plates 317 are symmetrically fixedly connected to the second support 318 by bolts. The second support 318 includes a vertically bent Z-shaped plate and a middle plate fixedly connected between the middle parts of the two Z-shaped plates. The left end of the Z-shaped plate is abutted with an adjusting screw 319, and the adjusting screw 319 is spirally connected to the adjusting seat 320. The adjusting seat 320 is fixedly connected to the first support 315.

[0037] The through hole of the second support 318 connected to the connecting plate is a horizontal strip hole. Loosen the bolts fixing the second support, rotate the adjustment screw, and adjust the second support so that the lateral roller can contact the side of the side groove 313. The adjustment is convenient and quick, and the connection is stable and reliable. The Z-shaped second support 318 is convenient for hanging in the air to avoid the vertical groove and the top roller and the bottom roller, and then contact the side groove. The free end of the second support 318 is rotatably connected to the lateral roller 306. The lateral roller 306, the bottom roller 307 and the top roller 308 on one side are respectively located on the side, bottom and top surfaces of the side groove 313 of the I-beam 305. The end surface of the I-beam 305 is provided with an auxiliary roller 309, which abuts against the bottom of both sides of the movable plate 304. The auxiliary roller 309 is rotatably connected to one end of two horizontal auxiliary connecting plates 321. The auxiliary connecting plate 321 is rotatably connected to the auxiliary hinge seat 322 fixed at the bottom of the I-beam 305 near the middle. A top fixing plate 323 and a right fixing plate 324 are vertically connected between the two auxiliary connecting plates 321 near the other end. A swing adjustment screw 325 is spirally connected to the top fixing plate 323. The free end of the screw of the swing adjustment screw 325 abuts against the bottom surface of the I-beam 305. A fastening nut 326 is spirally connected to the swing adjustment screw 325. The fastening nut 326 is attached to the top fixing plate 323. By rotating the swing adjustment screw, the pitch angle adjustment of the two auxiliary connecting plates can be achieved, thereby enabling the auxiliary roller to support the movable plate in mid-air.

[0038] The outer end of the movable plate 304 is detachably connected to a lateral slot plate 310, and a hinged double ear 311 is arranged near the outer end at the bottom of the movable plate 304. The hinge hole of the hinged double ear 311 is a vertical strip hole. The vertical strip hole is arranged to facilitate a certain small angle of pitch and retreat during the pushing process, and thus can also play a certain adaptive resistance to the arc-shaped steel bar. The hinged double ear 311 is hinged to the cylinder rod of the telescopic hydraulic cylinder 312, and the tail end of the cylinder seat of the telescopic hydraulic cylinder 312 is hinged to the walking trolley 1 (the upper telescopic platform 301 is hinged to the tail hinge seat arranged at the bottom of the upper I-beam 305, and the lower telescopic platform 301 is hinged to the tail hinge seat arranged on the side of the column 107), and the cylinder seat of the telescopic hydraulic cylinder 312 is provided with an auxiliary support frame 327 on the bottom of its cylinder seat near the bottom of the telescopic end of the cylinder rod, and the auxiliary support frame 327 is fixedly connected to the two I-beams 305.

[0039] An auxiliary support frame is set up, and a double telescopic platform is adopted. A telescopic hydraulic cylinder is used to drive the movable plate to telescope at the bottom of the fixed plate. The telescopic movement is fast and stable, and the hydraulic cylinder itself has elastic characteristics, and can also play a certain buffering role. The lateral rollers and bottom rollers are embedded in the grooves of the I-beams, and the result is compact. With the auxiliary rollers, the friction during the pushing of the movable plate can be reduced, and the noise can be reduced. The rollers are located in the grooves, which can also play a certain role in noise reduction. A detachable lateral slot plate (with the same structure as the top slot plate) is installed, and after being extended, it rests against the outermost vertical 9 steel bars on the side of the second lining (such as Fig.14 ), it can also position the outermost steel bars on the side of the secondary lining and can operate on the operating table, thereby improving the positioning accuracy of the lateral steel bars and improving the binding efficiency.

[0040] Example 2

[0041] refer to Figure 5-7As shown, the above-mentioned steel bar positioning fixture 2 includes a slot plate 201, a supporting crossbeam 1 202, a supporting crossbeam 204 and a supporting crossbeam 3 205. The slot plates 201 are two, and the tops are provided with U-shaped slots 203 with uniform intervals. The bottoms are respectively fixedly connected to the two supporting crossbeams 1 202. The two supporting crossbeams 1 202 are fixedly connected to the front and rear directions of the top of the arch of the walking trolley 1 symmetrically through a plurality of top supporting columns 1 215. The supporting crossbeam 204 is two, which are symmetrically installed on the top of the arch of the walking trolley 1 and are respectively located outside the two supporting crossbeams 1 202. The supporting crossbeam 3 205 is two, which are symmetrically fixedly connected at the two corners of the top of the arch of the walking trolley 1 and are kept in contact with the supporting arc-shaped steel bars 4. Tangent, support beam 204 and support beam 3 205 are respectively fixedly connected to the top of the arch of the walking trolley 1 by multiple top support columns 216 and support columns 3 217, and two top slot plates are used to position the top arc-shaped steel bars, and the remaining support beams play an auxiliary supporting role, so that the cantilevers on both sides of the arc-shaped steel bars are longer, which is convenient for a certain longitudinal retreat and avoids difficulty in docking with the side arc-shaped steel bars. The adjacent top support column 1 215 and the top support column 2 216 are fixedly connected with a reinforced diagonal brace 1 217 near the top, and the adjacent top support column 216 and the top support column 3 217 are fixedly connected with a reinforced diagonal brace 2 218 near the top. The addition of reinforced diagonal brace 1 and reinforced diagonal brace 2 can provide better support stability.

[0042] In order to facilitate transportation and installation, the slot plate is set to a modular structure, that is, the slot plate 201 is formed by connecting multiple short slot plates 206, and two adjacent short slot plates 206 are fixedly connected by two butt plates 207. Each short slot plate 206 is provided with a horizontal strip hole 214, and connecting ears 208 are provided on the supporting beam 1 202 opposite to both sides of the horizontal strip hole 214. The ears 208 are fixed to the short slot plate 206 by passing bolts through the horizontal strip holes 207. The modular slot plate structure is adopted, the weight of a single plate is light, and it is convenient to carry and make. In addition, the horizontal strip holes are used to connect to the ears of the supporting beam 1, which is convenient for longitudinal adjustment. The slots on the two slot plates remain opposite and symmetrical. The adjacent short slot plates are clamped and fixed by butt plates. The connection is stable and reliable, and the installation is convenient and quick.

[0043] In order to facilitate quick installation and positioning, a positioning groove 209 is provided on the supporting crossbeam 1 202, and the lower end of the slot plate 201 is inserted into the positioning groove 209. The positioning groove can be used to quickly install the slot plate to a specified position. Combined with the preliminary positioning of the two ears, the positioning is faster and the installation is more accurate. A shock-absorbing rubber layer 211 is provided in the positioning groove 209. The rubber layer is provided to play an elastic buffering and protective role to avoid the deterioration of positioning accuracy caused by long-term pulling of the slot plate, which may cause damage to the bottom of the slot plate; a positioning pin 210 is provided between two adjacent short slot plates 206, and the positioning pin is used to position and dock each short slot plate to improve the docking accuracy.

[0044] In order to facilitate the left-right symmetry of the slots of the two slot plates in the longitudinal direction, the slot plates need to be able to be adjusted longitudinally, that is, two adjustment seats 212 are respectively provided at both ends of the supporting beam 202, and each adjustment seat 212 is spirally connected with an adjustment screw 213, and the inner end of the adjustment screw 213 abuts against the middle of the end face of the slot plate 201. When in use, take one slot plate as a reference, loosen the adjustment screw at one end of the other slot plate, rotate the other adjustment screw, and when they are facing each other, lock the two adjustment screws, which makes adjustment convenient and quick.

[0045] Among them, reference Figure 1-48-9, the walking trolley 1 includes four door frames 101, a bottom supporting longitudinal beam 102, an upper supporting longitudinal beam 103 and a supporting walking mechanism 104. The four door frames 101 are evenly spaced along the longitudinal direction, and both ends of the bottom are fixedly connected to two bottom supporting longitudinal beams 102. The two adjacent door frames 101 are detachably fixedly connected near the upper ends through the upper supporting longitudinal beam 103. The supporting walking mechanism 104 is installed at the bottom of the bottom supporting longitudinal beam 102. Four detachable arches 105 are arranged on the top of the four door frames 101, and a detachable operating platform 1 is overlapped between the four arches 105. 06. A detachable forked reinforcing diagonal beam 108 is arranged between the columns 107 of the front two door frames 101 and the rear two door frames 101 among the four frames. A detachable reinforcing diagonal beam 110 is arranged between the columns 107 of each door frame 101 and the top cross beam 109. Two detachable middle longitudinal beams 111 are also arranged between the top cross beams 109 of two adjacent door frames 101. The middle longitudinal beam 111 is butt-jointed to the top cross beam 109 connected with the reinforcing diagonal beam 110. A walking frame consisting of four door frames, bottom supporting longitudinal beams, and upper supporting longitudinal beams is used in conjunction with the forked reinforcing diagonal beams at set positions. The whole walking frame has high support stiffness and strength, and the support is stable and reliable. An arch-type operating platform is arranged on the top of the walking frame to facilitate operators to arrange and bundle steel bars. The arch 105 includes a vertical extension beam 132, an inclined beam 133 and a horizontal beam 134. The vertical extension beam 132 adopts two beams, which are respectively the extensions of the upper ends of the two columns 107. The top end of each vertical extension beam 132 is detachably fixedly connected to one end of the inclined inclined beam 133, and the other ends of the two inclined beams 133 are detachably fixedly connected to the two ends of the horizontal beam 134. The inclined beams of two adjacent arches 105 are connected to the horizontal beam 134. 133 are detachably fixedly connected by a step operating platform 135, two adjacent horizontal beams 134 are detachably fixedly connected by a horizontal plate 136, the lower sides of both ends of the horizontal beam 134 are detachably fixedly connected to the top cross beam 109 by two arch vertical beams 137, and two adjacent vertical extension beams 132 are detachably fixedly connected near the top by an arch longitudinal beam 138. The entire arch and the operating platform have good supporting stability, and the walking truss is a detachable structure, which is convenient for loading and reuse and reduces costs. The step operating platform 135 and the horizontal plate 136 constitute the entire operating platform 106.

[0046] If the steel bar clamp slot is used, after the steel bar is bundled, if the walking trolley needs to be moved, the steel bar clamp needs to be removed, which is time-consuming and laborious. Moreover, it still needs to be reinstalled and adjusted for the next section, which is even more time-consuming and laborious. In order to facilitate the top arc steel bar of the walking trolley to be separated from the top steel bar after bundling, a lifting support walking mechanism is set. Figure 1-4and 8-9, the supporting walking mechanism 104 includes a power walking wheel group 112, an auxiliary walking wheel group 113 and a lifting support mechanism 114, the power walking wheel group 112 is provided with a power motor for driving it to walk, the power walking wheel group 112 and the auxiliary walking wheel group 113 are respectively installed on the front and rear sides of the bottom supporting longitudinal beam 102, the middle part of the top side of the roller frame 115 of the power walking wheel group 112 is rotatably connected to the rotating table 116 of the bottom supporting longitudinal beam 102, the top side of the roller frame 115 is hinged to the cylinder rod end of the steering hydraulic cylinder 117 through a hinge pin near the edge, the other end of the steering hydraulic cylinder 117 (the tail of the cylinder seat) is hinged to the bottom hinge ear 123 installed at the bottom of the bottom supporting longitudinal beam 102, the axis of the steering hydraulic cylinder 117 does not intersect with the power walking wheel group 112 when it walks normally in a straight line, and the steering hydraulic cylinder 117 extends After retracting, it can drive the power walking roller group 112 to rotate. Four lifting support mechanisms 114 are used, which are symmetrically installed in pairs on the two bottom supporting longitudinal beams 102. After the lifting support mechanism 114 is extended, the power walking wheel group 112 and the auxiliary walking wheel group 113 can be suspended in the air, and roller walking is adopted to facilitate the movement of the walking trolley. When the walking reaches the set position, the lifting support mechanism is adopted to achieve better stable support. The contact surface of the lifting support mechanism is convenient to set larger, and the contact surface of the lifting support mechanism is larger than that of the roller group, which is more conducive to stable support. Moreover, the more important point of the lifting support mechanism is that after the positioning and binding of the steel bars are completed, the steel bars positioned in the slot need to be separated from the slot plate, thereby lowering the height so that the steel bars in the slot are separated from the slot, which is conducive to moving the walking trolley to the next workstation for the use of steel bar binding in the next section of the tunnel.

[0047] The lifting support mechanism 114 includes a lifting hydraulic cylinder 118, a support column 119, an inverted U-shaped frame 120 and a cushion block 121. The inverted U-shaped frame 120 is fixedly connected to the upper surface of the bottom support longitudinal beam 102 and a vertical through hole 122 is arranged opposite to the bottom support longitudinal beam 102. The cylinder seat of the lifting hydraulic cylinder 118 is fixedly connected to the top of the groove of the inverted U-shaped frame 120. The cylinder rod of the lifting hydraulic cylinder 118 is fixedly connected to the upper end of the support column 119. The lower end of the support column 119 moves through the vertical through hole 122 and then abuts against the cushion block 121. At least one cushion block 121 is used. An auxiliary lifting mechanism 1 is installed next to the lifting support mechanism. 24. The two ends of the auxiliary lifting mechanism can be against the ground and the bottom surface of the bottom supporting longitudinal beam 102. The auxiliary lifting mechanism can be used to realize the support and the installation of gaskets to level the four-corner lifting support mechanism. Because the ground is not completely flat, the auxiliary lifting mechanism 124 includes an auxiliary hydraulic cylinder 125, a cylinder seat fixing frame 126 and a spherical hinge seat 127. The cylinder seat of the auxiliary hydraulic cylinder 125 is fixedly connected in the sleeve of the cylinder seat fixing frame 126. A supporting abutment plate is arranged on the upper end of the sleeve to increase the supporting contact surface. A plurality of reinforcing ribs are evenly arranged circumferentially between the supporting abutment plate and the sleeve to improve the supporting stability of the cylinder seat fixing frame. The cylinder rod of the auxiliary hydraulic cylinder 125 It is hinged on the spherical hinge seat 127, and a lower abutment plate is arranged at the lower end of the spherical hinge seat. The lower abutment plate contacts the ground to increase the contact area. The spherical hinge seat can adapt to the unevenness of the bottom surface and avoid additional torque at the connection. This method can ensure that the telescopic force of the auxiliary hydraulic cylinder remains vertical. The inverted U-shaped frame 120 includes two vertical I-beams 128 and a horizontal I-beam 129 fixedly connected between the tops of the two vertical I-beams 128. A circle of L-shaped flanges 130 are welded at the bottom of the two vertical I-beams 128. The L-shaped flange 130 is fixedly connected to the bottom supporting longitudinal beam 102 by bolts. The circle of flanges On the one hand, it is convenient to stably and reliably fix the connection with the bottom supporting longitudinal beam 102, thereby improving the connection stability and reliability. On the other hand, a circle of flanges reinforces the lower ends of the two vertical I-beams, and the inverted U-shaped frame 120 has better stability, higher strength and better rigidity as a whole. The supporting column and the pad are connected by bolts, and the pad is provided with specifications of different heights, which is convenient for use according to actual needs. The side of the double-I-shaped bottom supporting longitudinal beam 102 facing the L-shaped flange 130 is provided with vertical ribs 131 to improve the support strength and rigidity here and ensure stability. The supporting column 119 adopts a vertical square tube with flanges at both ends.

[0048] In view of the fact that after a pile of arc-shaped steel bars are hoisted by the hoisting equipment and placed on the clamp, it is time-consuming and laborious to move them manually on the top of the walking platform, and auxiliary equipment is needed to push the steel bars to reduce the labor intensity, that is, a tunnel secondary lining steel bar binding trolley also includes a steel bar moving mechanism 5 installed on a supporting crossbeam 202, referring to Figure 15-18The steel bar moving mechanism 5 includes two walking roller groups 501 and a connecting rod 502 connecting the wheel frames of the two walking roller groups 501. A horizontal U-shaped steel bar placement groove 503 is arranged on one side of the walking roller group 501. The outer end of the opening of the horizontal U-shaped steel bar placement groove 503 is a trumpet mouth. A locking mechanism is arranged at the opening of the U-shaped steel bar placement groove 503. The two walking roller groups are connected by a connecting rod and placed on two supporting beams for pushing, so as to realize the rapid positioning of the arc-shaped steel bars, save time and effort, reduce labor intensity, and the directional walking is smooth and fast, it is not easy to damage the steel bars, and it will not cause collision with other bundled steel bars, and the operation safety is higher.

[0049] A horizontal U-shaped placement groove is used to place steel bars, which makes it convenient to quickly push the placed steel bars into the groove, and a locking mechanism is used to lock them. One person can complete the loading and transportation of steel bars, reducing labor costs, and the steel bars can be pushed into the groove without running around, saving time and effort. The locking mechanism is remotely operated and easy to operate. The locking mechanism includes an elastic locking pin 504, a connecting rod 505, a rocker arm 506 and a pull rope 507. The elastic locking pin 504 is vertically installed on the upper side of the horizontal U-shaped steel bar placement groove 503 and can close the notch of the U-shaped steel bar placement groove 503 in a free state. The upper end of the elastic locking pin 504 extends out of the upper side wall of the U-shaped steel bar placement groove 503 and is hinged to one end of the connecting rod 505. The other end of the connecting rod 505 is hinged to one end of the rocker arm 506. The rocker arm 506 is close to the middle The connecting rod 505 and the rocker arm 506 pull the length of the elastic locking pin 504 to ensure that the horizontal U-shaped steel bar placement groove 503 is fully opened. The other end of the rocker arm 506 is connected to one end of the pull rope 507 through the connecting pin 512. The pull rope 507 passes around the first fixed pulley 508, and the first fixed pulley 508 is installed at the end of the connecting rod 502. The other end of the pull rope 507 passes around the second fixed pulley 509 installed near the middle of the connecting rod 505 and is connected to the crank 510. The crank 510 is hinged on the hinged ear 513 near the middle of the connecting rod 502. The crank 510 is similar to the brake handle of a bicycle. Press the handle and pull the pull rope 507. The handheld end of the crank 510 is connected to the connecting rod 502 through the hanging ring 525. 02, keep the elastic locking pin 504 open, the locking mechanism is remotely operated to reduce the number of personnel, and while opening, rotate the connecting rod to send out the steel bar, and the elastic locking pin 504 moves vertically through the spring sleeve 514 and the upper side wall of the horizontal U-shaped steel bar placement groove 503. A return spring 515 is sleeved on the elastic locking pin 504, and the lower end of the return spring 515 abuts against the annular boss 516 set on the elastic locking pin 504, and the upper end abuts against the sleeve cover 517 covered by the upper end of the spring sleeve 514. A through hole that moves through the elastic locking pin 504 is set in the middle of the sleeve cover 517, and the lower end of the spring sleeve 514 is fixedly connected to the groove on the upper side wall of the horizontal U-shaped steel bar placement groove 503. The side of the walking roller group 501 is provided with a card against the card slot plate 201 of the steel bar positioning fixture 2 The limiting mechanism of the slot 203, after the limiting mechanism is limited, the slot of the U-shaped steel bar placement slot 503 is close to the slot 203, and the limiting mechanism is set to facilitate rapid limiting, so that the pushed steel bar can be quickly sent to the designated slot, reducing excessive movement, reducing manual operation, saving time and effort, and the limiting mechanism includes a limiting roller 518, a lifting rod 519 and a second reset spring 520. The limiting roller 518 is rotatably connected to the lower end of the lifting rod 519 through a wheel frame, and the second reset spring 520 is sleeved on the lifting rod 519. The two ends of the second reset spring 520 respectively abut against the lower limiting pin 521 vertically fixedly connected to the lifting rod 519 and the top surface of the opening cavity 522, and the lower limiting pin 521 is located in the opening cavity 522, and the lifting rod 519 moves through the opening cavity 522.The back of the opening 522 is fixedly connected to the outer side of the wheel frame of the walking roller group 501 through a limiting connecting plate 523. The limiting connecting plate 523 is fixedly connected to the walking roller group 501 by screws. The spacing between the slot of the slot plate opposite to the U-shaped steel bar placement slot and the positioning limiting roller is at least twice the spacing between two adjacent slots. When the limiting roller 518 reaches the top of a slot through the roller during walking, it will achieve a certain positioning effect under the action of the reset spring. When continuing to walk, it will exit the slot and enter the next position under the action of the reset spring. Follow the positioning, which is convenient and fast. The through hole 524 through which the screw passes through the limiting connecting plate 523 is a horizontal strip through hole. The horizontal strip through hole is convenient for adjusting the slot of the slot plate opposite to the horizontal U-shaped steel bar placement slot after limiting, so as to adapt to the adjustment of slots with different spacings on the slot plate when different steel bars are tied, and the application range is greatly increased and the cost is reduced.

[0050] When assembling the tunnel secondary lining steel bar binding trolley, install the power walking wheel group and the auxiliary walking wheel group on the bottom supporting longitudinal beam, and lock the power walking wheel group and the auxiliary walking wheel group with brake iron shoes, move the two bottom supporting longitudinal beams to the set position, install the two adjacent portal frames in front, and add the upper supporting longitudinal beam and the fork-shaped reinforcing diagonal beam, install the two adjacent portal frames in the back, and add the upper supporting longitudinal beam and the fork-shaped reinforcing diagonal beam, and add the middle longitudinal beam between the two adjacent portal frames. After the front and back installation, keep the balance of the walking frame, add the reinforcing diagonal beam to reinforce the columns and the top crossbeam, add the lower operating platform, and install the fixing plate of the middle telescopic platform in blocks. Install it first to facilitate the up and down operations, and then install the arch structure. After the structure is installed, the step operating platform and horizontal platform are installed, the movable plate of the telescopic table is installed, and then the guardrails of the lower operating platform and the telescopic table and the top guardrail are installed. Finally, the top steel bar positioning clamp is installed. The assembly sequence adopted takes into account the stability and safety of the large trolley during the installation process to avoid operational risks caused by uneven force, and also considers operational convenience. The operating platform is installed at an appropriate time to arrange the remaining equipment, which is more convenient to operate. The movable plate of the telescopic table and the hydraulic cylinder it drives are placed at the back to avoid damage to the hydraulic cylinder. Finally, the top clamp is installed to facilitate the operator to operate and install on the top of the walking trolley. The operation is safer and it is also convenient for the placement and assembly of the parts for the top steel bar positioning clamp.

[0051] Example 3

[0052] A construction method for a tunnel secondary lining steel bar binding trolley, the method comprising: moving the walking trolley to the tunnel secondary lining steel bar binding area, maintaining left-right symmetry, controlling four lifting hydraulic cylinders at the bottom of the walking trolley, extending four support columns onto pads, suspending the walking wheel group of the walking trolley, fixing the pads to the support columns, the pads abutting against or fixing the ground, using a hoisting device to suspend the required amount of arc-shaped steel bars to one end of a steel bar positioning fixture at the top, using a steel bar moving mechanism to place the arc-shaped steel bars and then push them to the farthest end, and placing them on the steel bar positioning fixture from the farthest end to the nearest end in turn, and positioning them. After completion, connect the two ends of the arc-shaped steel bars with the lateral arc-shaped steel bars using screw sleeves, and after the telescopic platform is extended, connect the lateral arc-shaped steel bars with the embedded steel bars and use screw sleeves to complete the arrangement of the inner annular steel bars. Based on the annular steel bars, arrange the remaining annular steel bars and longitudinal steel bars on the operating platform on the top of the traveling trolley and the telescopic platform on the side and tie them up, finally forming the side wall steel cage and the annular steel cage. After completing the steel bar tying, control the lifting hydraulic cylinder to lower the trolley until the walking roller group touches the ground, remove the traveling trolley, and put the secondary lining trolley in place for template arrangement and pouring.

[0053] The above-mentioned embodiments are only for describing the preferred implementation of the utility model, and are not intended to limit the scope of the utility model. Without departing from the design spirit and principle of the utility model, various modifications and improvements made by those skilled in the art to the technical solution of the utility model shall fall within the protection scope determined by the claims of the utility model.

Claims

1. A telescopic platform for a steel bar trolley, characterized in that: The telescopic platform (301) comprises an upper telescopic platform (301) and a middle telescopic platform (302). The upper telescopic platform (301) and the middle telescopic platform (302) each comprise three sets of fixed plates (303) and movable plates (304). The fixed plates (303) are fixedly connected to the tops of two I-beams (305). A frame is provided at the bottom of the movable plates (304). Two lateral rollers (306), two bottom rollers (307) and two top rollers (308) are provided at the inner ends of both sides of the movable plates (304). The lateral rollers (306), the bottom rollers (307) and the top rollers (308) on one side are respectively located on the two I-beams. The side surface, bottom surface and top surface of the side groove (313) of the I-beam (305), the end surface of the I-beam (305) is provided with auxiliary rollers (309), the auxiliary rollers (309) are against the bottoms of both sides of the movable plate (304), the outer end of the movable plate (304) is detachably connected with a lateral slot plate (310), the bottom of the movable plate (304) is provided with hinged double ears (311) near the outer end, the hinge hole of the hinged double ears (311) is a vertical strip hole, the hinged double ears (311) are hinged to the cylinder rod of the telescopic hydraulic cylinder (312), and the cylinder seat of the telescopic hydraulic cylinder (312) is hinged on the walking trolley (1).

2. A telescopic platform for a steel bar trolley according to claim 1, characterized in that: The overall thickness of the frame and the movable plate (304) is less than the height of the side groove of the I-beam (305).

3. A telescopic platform for a steel bar trolley according to claim 1, characterized in that: The two I-beams (305) of the upper telescopic platform (301) are fixedly connected to the top of the vertical extension beam (132) and the side of the arch vertical beam (137) to form a cantilever structure, and the two I-beams (305) of the middle telescopic platform (302) are fixedly connected to the column (107) to form a lower cantilever structure.

4. The telescopic platform for a steel bar trolley according to claim 1, characterized in that: The bottom roller (307) and the top roller (308) are symmetrically installed in a vertical groove (316) provided at the right end of the first support (315). The first support (315) includes a bottom plate and vertical plates fixedly connected to the right and left sides. The two vertical plates and the bottom plate form a vertical groove (316). Two connecting plates (317) are symmetrically arranged near the left end of the first support (315). The two connecting plates (317) are symmetrically fixedly connected to the second support (318) by bolts. The second support (318) includes a vertically bent Z-shaped plate and a middle plate fixedly connected between the middle parts of the two Z-shaped plates. The left end of the Z-shaped plate is abutted against an adjusting screw (319). The adjusting screw (319) is spirally connected to an adjusting seat (320). The adjusting seat (320) is fixedly connected to the first support (315). The free end of the second support (318) is rotatably connected to the lateral roller (306).

5. A telescopic platform for a steel bar trolley according to claim 4, characterized in that: The through hole of the second support (318) connected to the connecting plate is a horizontal strip hole. The bolts fixing the second support (318) are loosened, and the adjustment screw (319) is rotated to adjust the second support (318) so that the lateral roller (306) can contact the side of the side groove (313).

6. The telescopic platform for a steel bar trolley according to claim 1, characterized in that: The auxiliary roller (309) is rotatably connected to one end of two horizontal auxiliary connecting plates (321); the auxiliary connecting plates (321) are rotatably connected to an auxiliary hinge seat (322) fixed at the bottom of the I-beam (305) near the middle; a top fixing plate (323) and a right fixing plate (324) are vertically connected between the two auxiliary connecting plates (321) near the other ends; a swing adjustment screw (325) is spirally connected to the top fixing plate (323); the free end of the screw of the swing adjustment screw (325) abuts against the bottom surface of the I-beam (305); a fastening nut (326) is spirally connected to the swing adjustment screw (325); and the fastening nut (326) is fitted on the top fixing plate (323).

7. A telescopic platform for a steel bar trolley according to claim 1, characterized in that: An auxiliary support frame (327) is arranged on the bottom of the cylinder seat of the telescopic hydraulic cylinder (312) near the telescopic end of the cylinder rod, and the auxiliary support frame (327) is placed on the bottom surface of the cylinder seat. The auxiliary support frame (327) is fixedly connected to two I-beams (305).

Images