Steel bar moving mechanism for steel bar trolley

Abstract

The utility model discloses a reinforcing steel bar moving mechanism for a reinforcing steel bar trolley, which comprises two walking roller groups and a connecting rod for connecting wheel carriers of the two walking roller groups, a horizontal U-shaped reinforcing steel bar placing groove is arranged on one side of each walking roller group, the outer end of an opening of the horizontal U-shaped reinforcing steel bar placing groove is a horn mouth, and a locking mechanism is arranged at the opening of the U-shaped reinforcing steel bar placing groove. The two walking roller sets are connected through the connecting rod to be placed on the two first supporting cross beams for pushing, rapid positioning of the arc-shaped reinforcing steel bars is achieved, time and labor are saved, labor intensity is reduced, directional walking is stable and rapid, the reinforcing steel bars are not prone to being damaged, collision with other bundled reinforcing steel bars cannot be caused, and operation safety is higher.

Description

Technical Field

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

[0002] Before pouring the tunnel's secondary lining, the rebar cages need to be arranged and tied. Currently, this is typically done manually using a trolley, though some also use clamps to position the rebar. For clamp-based positioning and tying, a pile of curved rebar is hoisted onto the clamps using lifting equipment, and then manually moved from atop a walking platform. This is labor-intensive, time-consuming, and inconvenient, and can easily lead to collisions between the rebars. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a steel bar moving mechanism for a steel bar trolley.

[0004] The technical solution adopted by the utility model is a steel bar moving mechanism for a steel bar trolley, comprising two walking roller groups and a connecting rod connecting the wheel frames of the two walking roller groups. A horizontal U-shaped steel bar placement groove is provided on one side of the walking roller group. The outer end of the opening of the horizontal U-shaped steel bar placement groove is a trumpet mouth, and a locking mechanism is provided at the opening of the U-shaped steel bar placement groove.

[0005] Preferably, the locking mechanism includes an elastic locking pin, a connecting rod, a rocker arm and a pull rope. The elastic locking pin is vertically installed on the upper side of the horizontal U-shaped steel bar placement slot and can close the notch of the U-shaped steel bar placement slot in a free state. The upper end of the elastic locking pin extends out of the upper side wall of the U-shaped steel bar placement slot and is hinged to one end of the connecting rod. The other end of the connecting rod is hinged to one end of the rocker arm. The rocker arm is hinged near the middle to a hinge seat provided on the upper end surface of the walking roller group. The other end of the rocker arm is connected to one end of the pull rope through a connecting pin. The pull rope passes around the first fixed pulley. The first fixed pulley is installed at the end of the connecting rod, and the other end of the pull rope passes around the second fixed pulley installed near the middle of the connecting rod and is connected to the crank handle, which is hinged on the hinge ear near the middle of the connecting rod; a return spring is sleeved on the elastic lock pin, and the lower end of the return spring abuts against the annular boss set on the elastic lock pin, and the upper end abuts against the cover covered by the upper end of the spring sleeve. A through hole is provided in the middle of the cover that can move through the elastic lock pin, and the lower end of the spring sleeve is fixedly connected to the groove on the upper side wall of the horizontal U-shaped steel bar placement slot.

[0006] Preferably, a limiting mechanism is provided on the side of the above-mentioned walking roller group, which abuts against the slot of the slot plate of the steel bar positioning clamp. The limiting mechanism includes a limiting roller, a lifting rod and two reset springs. The limiting roller is rotatably connected to the lower end of the lifting rod through the wheel frame, and the two reset springs are sleeved on the lifting rod. The two ends of the two reset springs respectively abut against the lower limiting pin vertically fixedly connected to the lifting rod and the top surface of the opening cavity, and the lower limiting pin is located in the opening cavity. The lifting rod moves through the opening cavity, and the back of the opening cavity is fixedly connected to the outer surface of the wheel frame of the walking roller group through a limiting connecting plate. The limiting connecting plate is fixedly connected to the walking roller group with screws.

[0007] Preferably, the through hole through which the screw passes through the limiting connecting plate is a horizontal strip-shaped through hole.

[0008] The utility model has the advantages that, compared with the prior art, the utility model has the advantages that, in view of the fact that after a pile of curved steel bars are hoisted by the hoisting equipment and placed on the clamp, manual movement on the top of the walking platform is required, which is time-consuming and labor-intensive. The two walking roller groups are connected by a connecting rod and placed on one of the two supporting crossbeams for pushing, so that the curved steel bars can be quickly positioned, saving time and effort, reducing labor intensity, and directional walking is smooth and fast, not easy to damage the steel bars, and will not cause collision with other bundled steel bars, so the operation is safer. A horizontal U-shaped placement groove is used for steel bar placement, which is convenient and fast to push the placed steel bars into the groove, and is locked by a locking mechanism. 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, saving time and effort. The locking mechanism can be remotely operated and is easy to operate. A limit mechanism is set, which is convenient for rapid limiting and the pushed steel bars can be quickly sent to the designated slot, reducing excessive movement, reducing manual operation, and saving more time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the three-dimensional structure of the tunnel secondary lining steel bar binding trolley;

[0010] Figure 2 This is a front view structural diagram of the tunnel secondary lining reinforcement tying trolley;

[0011] Figure 3 This is a left-side structural diagram of the tunnel secondary lining reinforcement tying trolley;

[0012] Figure 4 This is a schematic diagram of the overhead structure of the tunnel secondary lining reinforcement tying trolley;

[0013] Figure 5 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0014] Figure 6 This is a schematic diagram of the cross-sectional structure of the card slot plate installation location;

[0015] Figure 7 It is a structural diagram of the joint of the card slot plate;

[0016] Figure 8 This is a structural diagram of the support mechanism installation location;

[0017] Figure 9 This is a schematic diagram of the auxiliary lifting mechanism structure;

[0018] Figure 10 This is a rear view diagram of the structure where the rollers are installed on the movable plate;

[0019] Figure 11 This is a schematic diagram of the structure of the movable plate where the roller is installed;

[0020] Figure 12 Schematic diagram of the roller end structure for installing the movable plate;

[0021] Figure 13 for Figure 2 Enlarged structural diagram of part B in the middle (where the auxiliary roller is installed);

[0022] Figure 14 Schematic diagram of the telescopic platform structure;

[0023] Figure 15 Schematic diagram of the steel bar moving mechanism;

[0024] Figure 16 This is a front view structural diagram of the locking mechanism installation location;

[0025] Figure 17 This is a rear view structural diagram of the locking mechanism installation location;

[0026] Figure 18 This is a schematic diagram of the positioning mechanism installation. DETAILED DESCRIPTION

[0027] The present invention will be further explained below with reference to the accompanying drawings to facilitate better understanding by those skilled in the art.

[0028] Example 1

[0029] like Figure 15-18The U-shaped steel bar placement groove 503 is provided on one side of the walking roller group 501, and the outer end of the opening of the horizontal U-shaped steel bar placement groove 503 is a trumpet mouth. A locking mechanism is provided at the opening of the U-shaped steel bar placement groove 503, and the two walking roller groups are connected by a connecting rod to be placed on two supporting beams for pushing, so as to realize rapid positioning of the arc steel bar, saving time and effort, reducing labor intensity, and directional walking is smooth and fast, not easy to damage the steel bar, and will not cause collision with other bundled steel bars, so the operation is safer. A horizontal U-shaped placement groove is used for steel bar placement, which is convenient and quick to push the placed steel bar into the groove, and is locked by a locking mechanism. One person can complete the loading and transportation of steel bars, reducing labor costs, and there is no need for personnel to run around, and the steel bars can be pushed into the groove, saving time and effort, locking mechanism, remote operation, and convenient operation.

[0030] 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 walking roller group. The lever 505 is engaged with the lever 506 and the spring 512, and the spring 513 is engaged with the lever 506. The lever 506 is engaged with the lever 507 and the spring 514, and the spring 515 is engaged with the lever 506. The sleeve 514 and the upper side wall of the horizontal U-shaped steel bar placement groove 503, the elastic locking pin 504 is sleeved with a return spring 515, the lower end of the return spring 515 rests on the annular boss 516 set on the elastic locking pin 504, and the upper end rests on the sleeve cover 517 covering the upper end of the spring sleeve 514, and the middle part of the sleeve cover 517 is provided with a through hole that can move through the elastic locking pin 504, 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.

[0031] A limiting mechanism is provided on the side of the walking roller group 501, which is 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 provided to facilitate rapid limiting, and the pushed steel bars are quickly sent into the designated slot, reducing excessive movement, reducing manual operation, and saving time and effort.

[0032] 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. 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. The lower limiting pin 521 is located in the opening cavity 522. The lifting rod 519 moves through the opening cavity 522. The back of the opening cavity 522 is fixed by a limiting connecting plate 523. Connected to the outer surface of the wheel frame of the walking roller group 501, the limiting connecting plate 523 is fixedly connected to the walking roller group 501 with 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, following 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 the limit, thereby adapting to the adjustment of the slots of different spacings on the slot plate when different steel bars are tied, greatly increasing the scope of application and reducing costs.

[0033] Example 2

[0034] like Figure 1-14As shown, a tunnel secondary lining steel bar binding trolley includes a traveling trolley 1 and a steel bar positioning fixture 2. The steel bar positioning fixture 2 is installed on the top of the traveling trolley 1. Telescopic platforms 3 are set on both sides of the traveling trolley 1. The telescopic platforms 3 are used to abut against the steel bars and for steel bar binding operations. The steel bar positioning fixture 2 and the telescopic platform 3 support the 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 conjunction with the telescopic platforms on both sides, the lateral arc-shaped steel bars after connecting the top arc-shaped steel bars can be positioned laterally, and then adjusted to the best position with the top arc-shaped steel bars. The docking of embedded steel bars improves installation efficiency and convenience and reduces installation difficulty. After the top arc-shaped steel bars are connected to the side arc-shaped steel bars, they are difficult to move and dock manually due to their heavy weight, thick steel bars and good rigidity. A lower operating platform 6 is provided near the bottom of the walking trolley 1 to facilitate the laying and binding of the second lining steel bars on the side. Guardrails 7 are provided on the inner side and front and rear sides of the lower operating platform 6 and the telescopic platform 3. A ladder 8 is provided on the front side of the walking trolley 1, 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.

[0035] When multiple support beams are used to install steel bar positioning fixtures, it is easy to have the free cantilever length of the top arc steel bars at both ends after positioning be short. After the side arc 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 order to solve 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 beam 1 202, a supporting beam 204 and a supporting beam 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 beams 1 202. The two supporting beams 1 202 are fixedly connected to the front and rear directions of the top of the vault of the walking trolley 1 symmetrically through multiple top support columns 1 215. The supporting beam 2 204 is two, which are symmetrically installed on the top of the vault of the walking trolley 1 and are respectively located outside the two supporting beams 1 202. The supporting beam 3 205 is two, which are symmetrically fixedly connected at the two corners of the vault of the walking trolley 1 and maintain contact with the supported 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. 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 degree of longitudinal retreat and avoids difficulty in docking with the side arc-shaped steel bars. The adjacent top support column 1 215 and top support column 2 216 are fixedly connected with reinforced diagonal brace 1 217 near the top, and the adjacent top support column 2 216 and top support column 3 217 are fixedly connected with reinforced diagonal brace 2 218 near the top. The installation of reinforced diagonal brace 1 and reinforced diagonal brace 2 can provide better support stability.

[0036] 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 docking a plurality of short slot plates 206, and two adjacent short slot plates 206 are fixedly connected by two docking plates 207. Each short slot plate 206 is provided with a horizontal strip hole 214, and the supporting beam 1 202 opposite to each other on both sides of the horizontal strip hole 214 is provided with connecting ears 208. The ears 208 are fixed to the short slot plate 206 by bolts passing 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. Moreover, 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 docking plates, the connection is stable and reliable, and the installation is convenient and quick.

[0037] In order to facilitate quick installation and positioning, a positioning groove 209 is provided on the supporting beam 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 the specified position. Combined with the initial 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 protection role to avoid the positioning accuracy being deteriorated due to 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.

[0038] 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 1 202, and each adjustment seat 212 is spirally connected with an adjustment screw 213, and the inner end of the adjustment screw 213 rests on the middle of the end face of the slot plate 201. When in use, with 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 aligned, lock the two adjustment screws, which makes adjustment convenient and quick.

[0039] Among them, reference Figure 1-4and 8-9, 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 the two bottom supporting longitudinal beams 102. The two adjacent door frames 101 are detachably fixedly connected near the upper ends by the upper supporting longitudinal beams 103. The supporting walking mechanism 104 is installed at the bottom of the bottom supporting longitudinal beam 102. The top of the four door frames 101 is provided with four detachable arches 105, and a detachable operating platform 1 is overlapped between the four arches 105. 06. A detachable fork-shaped reinforcing diagonal beam 108 is set between the columns 107 of the front two door frames 101 and the rear two door frames 101. A detachable reinforcing diagonal beam 110 is set between the columns 107 of each door frame 101 and the top crossbeam 109. Two detachable middle longitudinal beams 111 are also set between the top crossbeams 109 of two adjacent door frames 101. The middle longitudinal beam 111 is docked at the top crossbeam 109 connected to the reinforcing diagonal beam 110. The walking frame composed of four door frames, bottom supporting longitudinal beams, and upper supporting longitudinal beams is used in conjunction with the fork-shaped reinforcing diagonal beams in the set position. The top of the walking frame is provided with an arch-type operating platform, which is convenient for 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 pieces, which are extensions of the upper ends of the two columns 107. The top of each vertical extension beam 132 is detachably fixed to one end of the inclined inclined beam 133, and the other ends of the two inclined beams 133 are detachably fixed to the two ends of the horizontal beam 134. The inclined beams of the 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 crossbeam 109 by two arch vertical beams 137, and two longitudinally adjacent vertical extension beams 132 are detachably fixedly connected near the top by an arch longitudinal beam 138. The entire arch and operating platform have good supporting stability, and the walking truss is a detachable structure, which is convenient for loading and reuse, reducing costs. The step operating platform 135 and the horizontal plate 136 constitute the entire operating platform 106.

[0040] 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 labor-intensive. Moreover, it needs to be reinstalled and positioned again for the next section, which is even more time-consuming and labor-intensive. In order to facilitate the separation of the top arc steel bar from the bundled top steel bar of the walking trolley, 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 to drive 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 remains non-intersecting with the power walking wheel group 112 when it is walking in a normal straight line, and the steering hydraulic cylinder 117 extends After retraction, it can drive the power walking roller group 112 to rotate. There are four lifting support mechanisms 114, which are symmetrically installed in pairs on the two bottom support 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 used to facilitate the movement of the walking trolley. When the walking reaches the set position, the lifting support mechanism is used to achieve better stable support. The contact surface of the lifting support mechanism is convenient to set larger. Compared with the contact surface of the roller group, it is larger and more conducive to stable support. What is more important about 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, and then the height is lowered 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 bars for binding the next section of the tunnel.

[0041] Among them, 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 set opposite 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 rests on 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 support 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 to the sleeve of the cylinder seat fixing frame 126. A support and abutment plate is provided at the upper end of the sleeve to increase the support contact surface. A plurality of reinforcing ribs are evenly arranged circumferentially between the support and abutment plate and the sleeve to improve the support 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 set 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 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. 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 flange around the week 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 support 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 support column 119 adopts a vertical square tube with flanges at both ends.

[0042] Among them, in order to realize the positioning of the auxiliary supports at both ends of the top arc steel bar and the positioning of the lateral arc steel bar, as well as the positioning of the outermost steel bar 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, which is convenient for embedding into the side grooves to achieve sliding), 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 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 column 10 7 forms a lower cantilever structure, and the two I-beams 305 are fixedly connected to the columns 107 and the vertical extension beams 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 provided at the inner ends of both sides of the movable plate 304. The bottom rollers 307 and the top rollers 308 are symmetrically installed in the 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 left and right sides. The two vertical plates and the bottom plate form a vertical groove 316. Two connecting plates 317 are symmetrically provided 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 against 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 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, and the side of the single 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. The auxiliary roller 309 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. The top fixed plate 323 and the 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 to 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 to a fastening nut 326, which 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, thereby enabling the auxiliary roller to support the movable plate in the air. The outer end of the movable plate 304 is detachably connected to the lateral slot plate 310, and 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 pitching concession during the pushing process, thereby also playing a certain adaptive resistance to the arc 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 provided at the bottom of the upper I-beam 305, The lower telescopic platform 301 is hinged on the tail hinge seat provided 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 surface of the cylinder seat near the bottom of the telescopic end of the cylinder rod. The auxiliary support frame 327 is fixedly connected to the two I-beams 305. An auxiliary support frame is provided, and a double telescopic platform is adopted. The 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. 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. The result is compact. With the help of auxiliary rollers, the friction force during the pushing process of the movable plate can be reduced and the noise can be reduced. The rollers are located in the grooves and 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. After extending, it rests against the outermost vertical 9 steel bars (such as, Figure 14 ), it can also position the outermost steel bars on the side of the secondary lining and can be operated on the operating table, thereby improving the positioning accuracy of the lateral steel bars and improving the binding efficiency.

[0043] When assembling the tunnel secondary lining reinforcement 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 before, and add the upper supporting longitudinal beam and the fork-shaped reinforcing diagonal beam, and install the two adjacent portal frames after installation, 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, keep the balance of the walking frame after front and back installation, 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 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 platform is installed, and then the guardrails of the lower operating platform and the telescopic platform 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, avoids operational risks caused by uneven force, and also considers operational convenience. The operating platform is installed at the right time to arrange the remaining equipment, which is more convenient to operate. The movable plate of the telescopic platform 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, which improves operational safety and facilitates the placement and assembly of parts for the top steel bar positioning clamping.

[0044] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications and improvements made by those skilled in the art to the technical solution of the present invention without departing from the spirit and principles of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A steel bar moving mechanism for a steel bar trolley, characterized in that: The invention comprises two traveling roller groups (501) and a connecting rod (502) for connecting a wheel frame of the two traveling roller groups (501); a horizontal U-shaped steel bar placement groove (503) is provided on one side of the traveling roller group (501); the outer end of the opening of the horizontal U-shaped steel bar placement groove (503) is a bell mouth; and a locking mechanism is provided at the opening of the U-shaped steel bar placement groove (503).

2. A steel bar moving mechanism for a steel bar trolley according to claim 1, characterized in that: The locking mechanism comprises an elastic locking pin (504), a connecting rod (505), a rocking arm (506) and a pull rope (507). The elastic locking pin (504) is vertically mounted 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 rocking arm (506). The rocking arm (506) is hinged near the middle to a hinge seat (511) provided on the upper end surface of the walking roller group (501). The other end of the rocking arm (506) is connected to one end of the pull rope (507) through a connecting pin (512). The pull rope (507) passes around a first fixed pulley (508). The first fixed pulley The pulley (508) is installed at the end of the connecting rod (502), and the other end of the pull rope (507) is connected to the crank (510) after passing through the second fixed pulley (509) installed near the middle of the connecting rod (505). The crank (510) is hinged on the hinge ear (513) near the middle of the connecting rod (502); a return spring (515) is sleeved on the elastic lock pin (504), the lower end of the return spring (515) abuts against the annular boss (516) provided on the elastic lock pin (504), and the upper end abuts against the cover (517) covering the upper end of the spring cover (514), and the middle part of the cover (517) is provided with a through hole that movably passes through the elastic lock pin (504), and the lower end of the spring cover (514) is fixedly connected to the groove on the upper side wall of the horizontal U-shaped steel bar placement groove (503).

3. A steel bar moving mechanism for a steel bar trolley according to claim 1, characterized in that: A limiting mechanism is provided on the side of the walking roller group (501) and abuts against the slot (203) of the slot plate (201) of the steel bar positioning fixture (2). 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. The second return spring (520) is sleeved on the lifting rod (519). Both ends of the second return spring (520) abut against A lower limit pin (521) is vertically fixedly connected to the lifting rod (519) and the top surface of the opening cavity (522), and the lower limit pin (521) is located in the opening cavity (522). The lifting rod (519) movably passes through the opening cavity (522). The back side of the opening cavity (522) is fixedly connected to the outer side of the wheel frame of the walking roller group (501) through a limit connecting plate (523). The limit connecting plate (523) is fixedly connected to the walking roller group (501) by screws.

4. A steel bar moving mechanism for a steel bar trolley according to claim 3, characterized in that: The through hole (524) through which the screw passes through the limiting connecting plate (523) is a horizontal strip-shaped through hole.

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