Supporting and walking mechanism for steel bar trolley

Abstract

The utility model discloses a supporting walking mechanism for a steel bar trolley, which comprises a power walking wheel set, an auxiliary walking wheel set and a lifting supporting mechanism, and the power walking wheel set and the auxiliary walking wheel set are respectively arranged on the front side and the rear side of a bottom supporting longitudinal beam. The middle of the top side of a roller frame of the power walking wheel set is rotationally connected to a rotating table of the bottom supporting longitudinal beam, the top side close to the edge of the roller frame is hinged to one end of a steering hydraulic cylinder, the other end of the steering hydraulic cylinder is hinged to the bottom of the bottom supporting longitudinal beam, and the steering hydraulic cylinder can drive the power walking roller set to rotate after stretching out and drawing back. The supporting walking mechanism is adopted, the walking trolley moving in place can be positioned and supported, the supporting stability is improved, the height of the walking trolley can be conveniently adjusted, then the height of the walking trolley is reduced after steel bars are bound, a steel bar positioning clamp is conveniently separated from top arc-shaped steel bars, and the installation 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 supporting walking mechanism for a steel bar trolley. Background Art

[0002] Before pouring the second 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. Some people also use clamps to position the steel bars. However, if the current walking trolley uses steel bar clamps, it is necessary to remove the steel bar clamps when it needs to be moved, which is time-consuming and labor-intensive. Moreover, it still needs to be reinstalled and adjusted for positioning when it is reinstalled for use in the next section, which is even more time-consuming and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a supporting walking mechanism for a steel bar trolley, which is convenient for the steel bar clamp on the top of the walking trolley to be separated from the top arc steel bars after being bundled, thereby improving the installation efficiency.

[0004] The technical solution adopted by the utility model is a supporting walking mechanism for a steel bar trolley, including a power walking wheel group, an auxiliary walking wheel group and a lifting support mechanism. The power walking wheel group and the auxiliary walking wheel group are respectively installed on the front and rear sides of the bottom supporting longitudinal beam. The middle part of the top side of the roller frame of the power walking wheel group is rotatably connected to the rotating table of the bottom supporting longitudinal beam. The top side of the roller frame is hinged to one end of the steering hydraulic cylinder near the edge, and the other end of the steering hydraulic cylinder is hinged to the bottom of the bottom supporting longitudinal beam. After the steering hydraulic cylinder is extended and retracted, it can drive the power walking roller group to rotate.

[0005] Preferably, four lifting support mechanisms are used, which are symmetrically installed in pairs on the two bottom supporting longitudinal beams. After the lifting support mechanisms are extended, the powered walking wheel set and the auxiliary walking wheel set can be suspended in the air.

[0006] Preferably, the above-mentioned lifting support mechanism includes a lifting hydraulic cylinder, a support column, an inverted U-shaped frame and a cushion block. The inverted U-shaped frame is fixedly connected to the upper surface of the bottom support longitudinal beam and a vertical through hole is arranged opposite to the bottom support longitudinal beam. The cylinder seat of the lifting hydraulic cylinder is fixedly connected to the top of the groove of the inverted U-shaped frame. The cylinder rod of the lifting hydraulic cylinder is fixedly connected to the upper end of the support column. The lower end of the support column moves through the vertical through hole and rests on the cushion block. At least one cushion block is used.

[0007] Preferably, the inverted U-shaped frame includes two vertical I-beams and a horizontal I-beam fixedly connected between the tops of the two vertical I-beams. A circle of L-shaped flanges are welded to the bottom of the two vertical I-beams. The L-shaped flanges are fixedly connected to the bottom supporting longitudinal beams by bolts. Vertical ribs are arranged on the side of the double-I-shaped bottom supporting longitudinal beam facing the L-shaped flanges.

[0008] Preferably, an auxiliary lifting mechanism is installed next to the above-mentioned lifting support mechanism, and both ends of the auxiliary lifting mechanism can rest against the ground and the bottom surface of the bottom supporting longitudinal beam. The auxiliary lifting mechanism includes an auxiliary hydraulic cylinder, a cylinder seat fixing frame and a spherical hinge seat. The cylinder seat of the auxiliary hydraulic cylinder is fixedly connected to the sleeve of the cylinder seat fixing frame, a supporting abutment plate is arranged at the upper end of the sleeve, and a plurality of reinforcing ribs are evenly arranged circumferentially between the supporting abutment plate and the sleeve. The cylinder rod of the auxiliary hydraulic cylinder is hinged on the spherical hinge seat, and a lower abutment plate is arranged at the lower end of the spherical hinge seat, and the lower abutment plate is in contact with the ground.

[0009] Preferably, the support column is a vertical square tube with flanges at both ends.

[0010] Compared with the prior art, the beneficial effect of the utility model is that the lifting support mechanism is adopted to position and support the moving trolley, thereby improving the support stability, and when the trolley moves, the height of the trolley can be stably adjusted, and then the height of the trolley can be lowered after the steel bars are bundled, making it convenient for the steel bar positioning clamp to separate from the top arc-shaped steel bars, thereby solving the problem of the prior art that the steel bar clamp needs to be removed or repositioned and installed when the trolley is moved, which is time-consuming and labor-intensive, and improves the installation efficiency.

[0011] By setting a powered walking wheel set to control the movement of the walking trolley and setting a steering hydraulic cylinder, the walking trolley can be adjusted to the left and right positions in the tunnel to achieve rapid centering adjustment.

[0012] Four lifting hydraulic cylinders are used to support the support columns, and cooperate with pads to achieve lifting to the set height. Synchronous lifting is adopted, and the lifting is stable and reliable. It is installed with an inverted U-shaped frame to limit the support columns to the vertical through holes. On the one hand, it plays a protective role, and on the other hand, the entire center of gravity is lowered during the support process, which is more conducive to lifting and avoids poor stability caused by shaking. The detachable pads are convenient for raising the required height. 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 2 This 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 6It 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 structural schematic diagram 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 1-18As shown, a supporting walking mechanism for a steel bar trolley is used for a tunnel secondary lining steel bar binding trolley. The steel bar binding trolley includes 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 to abut against steel bars and perform steel bar binding operations. The steel bar positioning fixture 2 and the telescopic platform 3 support arc-shaped steel bars 4. The top steel bar positioning fixture is used to position the top arc-shaped steel bars. After connecting the lateral arc-shaped steel bars to the top arc-shaped steel bars, the longitudinal positioning of the lateral arc-shaped steel bars can be achieved. In addition, the telescopic platforms on both sides are extended and retracted to perform transverse positioning of the lateral arc-shaped steel bars after connecting the top arc-shaped steel bars. Position, and then adjust to the best connection with the embedded steel bars, improve installation efficiency and convenience, and reduce installation difficulty. Because after the top arc-shaped steel bars are connected to the lateral arc-shaped steel bars, they are heavy, thick and rigid, and are difficult to be manually moved and connected. A lower operating platform 6 is provided near the bottom of the walking trolley 1, which is convenient for laying and binding the side second lining steel bars. Guardrails 7 are provided on the inner side and front and rear sides of the lower operating platform 6 and the telescopic platform 3. The front side of the walking trolley 1 is provided with a ladder 8, and the front ladder is convenient for platform extension and extension to avoid interference. A ladder 2 9 is provided near the middle of the lower operating platform 6.

[0034] 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 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.

[0035] 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.

[0036] When multiple support beams are used to install steel bar positioning fixtures, the free cantilever lengths of the two ends of the top arc-shaped steel bars after positioning are likely to be short. After the lateral arc-shaped steel bars are connected with screw sleeves, the weight is heavier and it is still difficult to accurately connect with the embedded steel bars and fix them with screw sleeves. In view of the above problems, this application only uses two slot plates on the top for top positioning, that is, reference 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Among them, in order to realize the positioning of the 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 side, two telescopic platforms are set, namely, Figure 1-410-14, the telescopic platform 3 includes an upper telescopic platform 301 and a middle telescopic platform 302, and the upper telescopic platform 301 and the middle telescopic platform 302 each include 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, and the bottom of the movable plates 304 is provided with a frame (the overall thickness of the frame and the movable plates is less than the height of the side grooves of the I-beams 305, so as to facilitate embedding into the side grooves to achieve sliding), the two I-beams 305 of the upper telescopic platform 301 are fixedly connected to the tops of the vertical extension beams 132 and the sides of the arch vertical beams 137 to form a cantilever structure, and the two I-beams 305 can also play a role in reinforcing the strength and rigidity of the arch, and the two I-beams 305 of the lower telescopic platform 302 are fixedly connected to the columns 10 7 forms a lower cantilever structure, two I-beams 305 are fixedly connected to the column 107 and the vertical extension beam 132 by cantilever diagonal braces 314, which play a role in reinforcing the cantilever structure, two lateral rollers 306, two bottom rollers 307 and two top rollers 308 are arranged at the inner ends of both sides of the movable plate 304, and the bottom rollers 307 and the top rollers 308 are symmetrically installed in the vertical groove 316 arranged 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, and 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, and 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. The through hole of the second support 318 connecting the connecting plate is a horizontal strip hole. Loosen the bolts 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 313. The adjustment is convenient and fast, and the connection is stable and reliable. The Z-shaped second support is convenient for suspension 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, and the unilateral side The top roller 306, the bottom roller 307 and the top roller 308 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 plates 321 are rotatably connected to the auxiliary hinge seat 322 fixed at the bottom of the I-beam 305 near the middle. A top fixed plate 323 and a right fixed plate 324 are vertically connected between the two auxiliary connecting plates 321 near the other end. The top fixed plate 323 is spirally connected with a swing adjustment screw 325. The free end of the screw of the swing adjustment screw 325 abuts against the bottom surface of the I-beam 305.The swing adjustment screw 325 is spirally connected with a fastening nut 326, and the fastening nut 326 is fitted on the top fixed plate 323. By rotating the swing adjustment screw, the pitch angle adjustment of the two auxiliary connecting plates can be achieved, so that the auxiliary roller can support the movable plate in the air. 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 a hinged double ear 311 near the outer end. The hinge hole of the hinged double ear 311 is a vertical strip hole. The vertical strip hole is provided to facilitate a certain small angle of pitch retreat during the pushing process, so as to achieve a certain degree of adaptive resistance to the arc steel bar. The hinged double ear 311 is hinged to the cylinder rod of the telescopic hydraulic cylinder 312. The rear 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 rear hinge seat provided at the bottom of the upper I-beam 305. The lower telescopic platform 301 is hinged on the tail hinge seat set on the side of the column 107), the cylinder seat of the telescopic hydraulic cylinder 312 is provided with an auxiliary support frame 327 on the bottom of the cylinder seat near the telescopic end of the cylinder rod, and the auxiliary support frame 327 is fixedly connected to the two I-beams 305. An auxiliary support frame is set, and a double telescopic platform is adopted. The telescopic hydraulic cylinder is used to drive the movable plate to achieve telescopic extension at the bottom of the fixed plate. The telescopic extension is fast and stable, and the hydraulic cylinder itself has elastic characteristics and can also play a certain buffering role. The lateral rollers and the bottom rollers are embedded in the grooves of the I-beams, and the result is compact. With the auxiliary rollers, the friction force and noise can be reduced during the pushing process of the movable plate. 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, which is extended and abuts against the outermost vertical 9 steel bars (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.

[0042] 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 frame 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 stable and fast, it is not easy to damage the steel bars, and it will not collide with other bundled steel bars, and the operation safety is higher. The horizontal U-shaped placement groove is used for steel bar placement, which is convenient and quick to push the placed steel bars into the groove, and the locking mechanism is used for locking The locking mechanism can be operated by one person to complete the loading and transportation of steel bars, which reduces labor costs, and the steel bars can be pushed into the groove without the need for personnel to run, which saves time and effort. The locking mechanism can be remotely operated and is 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 hinged near the middle to the hinge seat 511 set on the upper end surface of the walking roller group 501. The connecting rod 505 and the rocker arm 506 pull the elastic locking pin 504 The length of the elastic locking pin 504 ensures 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 bicycle brake handle. 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 to keep the elastic locking pin 504 open. The locking mechanism is remotely operated to reduce the number of people. While opening, the connecting rod is rotated The connecting rod can 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. 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 provided in the middle of the sleeve cover 517. 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. A limiting mechanism is provided on the side of the walking roller group 501 that abuts against the slot 203 of the slot plate 201 of the steel bar positioning fixture 2. After the limiting mechanism is limited, the notch of the U-shaped steel bar placement groove 503 is close to the slot 203.The limiting mechanism is set to facilitate rapid limiting, and the pushed steel bars are quickly sent into the designated slots, which reduces excessive movement, reduces manual operation, and saves time and effort. The limiting mechanism includes a limiting roller 518, a lifting rod 519 and a second return 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 return spring 520 is sleeved on the lifting rod 519. The two ends of the second return 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 cavity 522 is fixedly connected to the outer surface of the wheel frame of the walking roller group 501 through a limiting connecting plate 523. The connecting plate 523 is fixedly connected to the walking roller group 501 by screws. The spacing between the slot of the slot plate facing the U-shaped steel bar placement slot and the positioning limit roller is at least twice the spacing between two adjacent slots. When the limit 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. The follow-up positioning 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 facing the horizontal U-shaped steel bar placement slot after the limit, so as to adapt to the adjustment of the slots with different spacings on the slot plate when different steel bars are tied, which greatly increases the application range and reduces the cost.

[0043] 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.

[0044] Example 2

[0045] 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.

[0046] 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 supporting walking mechanism for a steel bar trolley, characterized in that: The invention comprises a power running wheel group (112), an auxiliary running wheel group (113) and a lifting support mechanism (114); the power running wheel group (112) and the auxiliary running wheel group (113) are respectively mounted on the front side and the rear side of the bottom supporting longitudinal beam (102); the middle part of the top side of a roller frame (115) of the power running wheel group (112) is rotatably connected to a rotating table (116) of the bottom supporting longitudinal beam (102); the top side of the roller frame (115) is hinged to one end of a steering hydraulic cylinder (117) near the edge; the other end of the steering hydraulic cylinder (117) is hinged to the bottom of the bottom supporting longitudinal beam (102); and the steering hydraulic cylinder (117) can drive the power running wheel group (112) to rotate after being extended or retracted.

2. A supporting walking mechanism for a steel bar trolley according to claim 1, characterized in that: The lifting support mechanisms (114) are four in number and are symmetrically mounted in pairs on the two bottom support longitudinal beams (102). When the lifting support mechanisms (114) are extended, the power running wheel set (112) and the auxiliary running wheel set (113) can be suspended in the air.

3. A supporting walking mechanism for a steel bar trolley according to claim 1, characterized in that: The lifting support mechanism (114) comprises 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 directly 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.

4. A supporting walking mechanism for a steel bar trolley according to claim 3, characterized in that: 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 to the bottom of the two vertical I-beams (128). The L-shaped flanges (130) are fixedly connected to the bottom supporting longitudinal beam (102) by bolts. Vertical ribs (131) are arranged on the side of the double-I-shaped bottom supporting longitudinal beam (102) facing the L-shaped flanges (130).

5. The supporting walking mechanism for a steel bar trolley according to claim 1, characterized in that: An auxiliary lifting mechanism (124) is installed next to the lifting support mechanism (114). Both ends of the auxiliary lifting mechanism (124) can abut against the ground and the bottom surface of the bottom supporting longitudinal beam (102). 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 at the upper end of the sleeve. A plurality of reinforcing ribs are evenly arranged circumferentially between the supporting abutment plate and the sleeve. The cylinder rod of the auxiliary hydraulic cylinder (125) is hinged on the spherical hinge seat (127). A lower abutment plate is arranged at the lower end of the spherical hinge seat. The lower abutment plate contacts the ground.

6. The supporting travel mechanism for a steel bar trolley according to claim 3, characterized in that: The support column (119) is a vertical square tube with flanges provided at both ends.

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