Reinforcing steel bar clamp for reinforcing steel bar trolley

Abstract

The utility model discloses a reinforcing steel bar fixture for a reinforcing steel bar trolley, which comprises two clamping groove plates, first supporting cross beams, second supporting cross beams and third supporting cross beams, U-shaped clamping grooves are uniformly formed in the tops of the clamping groove plates at intervals, and the bottoms of the clamping groove plates are fixedly connected to the two first supporting cross beams respectively. The two first supporting cross beams are fixedly connected to the top of the walking trolley vault in the front-back direction in a bilateral symmetry mode through the multiple top supporting columns, the two second supporting cross beams are symmetrically installed on the top of the walking trolley vault and located outside the two first supporting cross beams respectively, and the two third supporting cross beams are symmetrically installed on the top of the walking trolley vault and located outside the two first supporting cross beams respectively. The arc-shaped reinforcing steel bars are symmetrically and fixedly connected to two corners of the top of the vault of the walking trolley and are tangent to the supported arc-shaped reinforcing steel bars. The two top clamping groove plates are used for positioning the top arc-shaped steel bar, and the other supporting cross beams play an auxiliary supporting role, so that cantilevers on the two sides of the arc-shaped steel bar are long, certain deformability is conveniently carried out in the longitudinal direction, and the situation that the arc-shaped steel bar is difficult to abut against side face arc-shaped steel bars is avoided.

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 steel bar clamp for a steel bar trolley. Background Art

[0002] Before pouring the secondary lining of the tunnel, the steel cage needs to be arranged and tied. The current method usually uses a trolley for manual positioning and bundling. Some people also use clamps to position the steel bars. However, when steel bar positioning clamps are installed on multiple supporting beams, the free cantilever length of both ends of the top arc steel bars after positioning is likely to be short. After the lateral 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, which seriously affects the installation efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a steel bar clamp for a steel bar trolley to improve installation efficiency and installation convenience.

[0004] The technical solution adopted by the utility model is a steel bar clamp for a steel bar trolley, including a slot plate, a supporting crossbeam 1, a supporting crossbeam 2 and a supporting crossbeam 3. Two slot plates are adopted, and U-shaped slots are evenly spaced on the top. The bottoms are respectively fixedly connected to two supporting crossbeams 1. The two supporting crossbeams 1 are symmetrically fixedly connected to the front and rear directions of the top of the walking trolley arch through a plurality of top support columns. Two supporting crossbeams 2 are adopted, which are symmetrically installed on the top of the walking trolley arch and are respectively located outside the two supporting crossbeams 1. Two supporting crossbeams 3 are adopted, which are symmetrically fixedly connected to the two corners of the top of the walking trolley arch and remain tangent to the supported arc-shaped steel bars. Supporting crossbeams 2 and supporting crossbeams 3 are respectively fixedly connected to the top of the walking trolley arch by a plurality of top supporting columns 2 and 3.

[0005] Preferably, the above-mentioned slot plate is formed by docking multiple short slot plates, and two adjacent short slot plates are fixedly connected by two docking plates. Each short slot plate is provided with a horizontal strip hole, and two connecting ears are provided on the supporting beams opposite to the horizontal strip holes on both sides. The two ears are fixed to the short slot plates by bolts passing through the horizontal strip holes.

[0006] Preferably, a positioning groove is provided on the supporting cross beam 1, the lower end of the slot plate is inserted into the positioning groove, and a shock-absorbing rubber layer is provided in the positioning groove.

[0007] Preferably, a positioning pin is provided between two adjacent short slot plates.

[0008] Preferably, two adjustment seats are respectively provided at one end and the other end of the support beam, and an adjustment screw is spirally connected to each adjustment seat, and the inner end of the adjustment screw abuts against the middle of the end surface of the slot plate.

[0009] Preferably, a reinforcing diagonal brace one is fixedly connected near the top between adjacent top support columns one and two, and a reinforcing diagonal brace two is fixedly connected near the top between adjacent top support columns two and three.

[0010] Compared with the prior art, the beneficial effect of the utility model is that two top slot plates are used to position the top arc-shaped steel bars, and the other supporting beams play an auxiliary supporting role, thereby making the cantilevers on both sides of the arc-shaped steel bars longer, facilitating a certain longitudinal retreat, avoiding difficulty in docking with the side arc-shaped steel bars, and improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the tunnel secondary lining steel bar binding trolley;

[0012] Figure 2 This is a front view of the structure of the tunnel secondary lining reinforcement tying trolley;

[0013] Figure 3 This is a left-side structural diagram of the tunnel secondary lining reinforcement tying trolley;

[0014] Figure 4 This is a top view of the structure of the tunnel secondary lining reinforcement tying trolley;

[0015] Figure 5 for Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0016] Figure 6 It is a schematic diagram of the cross-sectional structure of the card slot plate installation location;

[0017] Figure 7 It is a structural schematic diagram of the joint of the card slot plate;

[0018] Figure 8 This is a schematic diagram of the structure where the support mechanism is installed;

[0019] Figure 9 It is a schematic diagram of the auxiliary lifting mechanism structure;

[0020] Figure 10 This is a schematic diagram of the rear view structure of the movable plate where the rollers are installed;

[0021] Figure 11 This is a schematic diagram of the structure of the movable plate where the roller is installed, viewed from above;

[0022] Figure 12 A schematic diagram of the structure for installing the roller end of the movable plate;

[0023] Figure 13 for Figure 2 Enlarged structural diagram of the middle B part (where the auxiliary roller is installed);

[0024] Figure 14 Schematic diagram of the telescopic platform structure

[0025] Figure 15 Schematic diagram of the steel bar moving mechanism structure

[0026] Figure 16 Front view structure diagram of the installation location of the locking mechanism

[0027] Figure 17 Rear view structure diagram of the installation location of the locking mechanism

[0028] Figure 18 Schematic diagram of the installation of the positioning mechanism Specific implementation mode

[0029] The following will further explain and illustrate the present utility model in conjunction with the accompanying drawings of the specification, so as to be better understood by those skilled in the art.

[0030] Embodiment 1

[0031] As Figures 5 - 7 shown, a steel bar clamp for a steel bar trolley includes a slot plate 201, a first support cross beam 202, a second support cross beam 204 and a third support cross beam 205. Two slot plates 201 are used, and U-shaped slots 203 with uniform intervals are arranged at the top. The bottoms are respectively fixedly connected to the two first support cross beams 202. The two first support cross beams 202 are symmetrically fixedly connected in the front-rear direction on the top of the arch of the walking trolley 1 through multiple first top support columns 215. Two second support cross beams 204 are used and are symmetrically installed on the top of the arch of the walking trolley 1 and are respectively located outside the two first support cross beams 202. Two third support cross beams 205 are used and are symmetrically fixedly connected to the two corners of the top of the arch of the walking trolley 1 and are tangent to the supported arc-shaped steel bar 4. The second support cross beam 204 and the third support cross beam 205 are respectively fixedly connected to the top of the arch of the walking trolley 1 through multiple second top support columns 216 and third top support columns 217. Two top slot plates are used to position the top arc-shaped steel bar, and the other support cross beams play an auxiliary support role, so that the cantilevers on both sides of the arc-shaped steel bar are longer, which is convenient for making a certain longitudinal retreat and avoiding the difficult docking with the side arc-shaped steel bar. A first reinforcing diagonal brace 218 is fixedly connected near the top between adjacent first top support columns 215 and second top support columns 216, and a second reinforcing diagonal brace 219 is fixedly connected near the top between adjacent second top support columns 216 and third top support columns 217. Installing the first reinforcing diagonal brace 218 and the second reinforcing diagonal brace 219 can achieve better support stability.

[0032] For the convenience of transportation and installation, the slot card board is set as a modular structure, that is, the slot card board 201 is formed by butting multiple short slot card boards 206. Between two adjacent short slot card boards 206, they are fixedly connected by two butt joint plates 207. Each short slot card board 206 is provided with a horizontal strip hole 214. On the support cross beam 1 202 opposite to both sides at the horizontal strip hole 214, there are connecting double ears 208. The double ears 208 fix the short slot card board 206 by bolts passing through the horizontal strip hole 214. With the modular slot card board structure, the weight of a single board is lighter, which is convenient for handling and manufacturing. Moreover, by connecting to the double ears on the support cross beam 1 through the horizontal strip hole, after convenient longitudinal adjustment, the slots on the two slot card boards are kept facing each other and symmetric left and right. Between two adjacent short slot card boards, they are clamped and fixed by the butt joint plates, with stable and reliable connection and convenient and fast installation.

[0033] For the convenience of quick installation and positioning, the support cross beam 1 202 is provided with a positioning groove 209. The lower end of the slot card board 201 is clamped into the positioning groove 209. With the positioning groove, the slot card board can be quickly installed at the designated position. Cooperating with the preliminary positioning of the double ears, the positioning is faster and the installation is more accurate. The positioning groove 209 is provided with a shock-absorbing rubber layer 211. The rubber layer is provided to play an elastic buffering and protecting role, avoiding the deterioration of the positioning accuracy caused by the damage to the bottom of the slot card board due to the long-term pulling of the slot card board; between two adjacent short slot card boards 206, there is a positioning pin 210. The positioning pin is used to position and butt the short slot card boards, improving the butt joint accuracy.

[0034] In order to facilitate the slots in the longitudinal direction of the two slot card boards to be symmetrically facing each other left and right, the slot card board needs to be longitudinally adjustable, that is, two adjustment seats 212 are respectively arranged at both ends of the support cross beam 1 202. Each adjustment seat 212 is screwed with an adjustment screw 213. The inner end of the adjustment screw 213 abuts against the middle of the end face of the slot card board 201. During use, with one slot card board as a reference, loosen the adjustment screw at one end of the other slot card board and rotate the other adjustment screw. When they are facing each other, lock the two adjustment screws, with convenient and fast adjustment.

[0035] Embodiment 2

[0036] As Figures 1 - 18As shown in the figure, a tunnel secondary lining steel bar tying 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 the steel bars and perform steel bar tying operations. The steel bar positioning fixture 2 and the telescopic platforms 3 support the arc-shaped steel bar 4. By using the top steel bar positioning fixture to position the top arc-shaped steel bar, after connecting the lateral arc-shaped steel bar to the top arc-shaped steel bar, the longitudinal positioning of the lateral arc-shaped steel bar can be realized, and in cooperation with the telescopic movement of the telescopic platforms on both sides, the lateral arc-shaped steel bar after connecting the top arc-shaped steel bar can be horizontally positioned, and then adjusted to the best docking with the embedded steel bars, improving the installation efficiency and convenience, and reducing the installation difficulty. Because after the top arc-shaped steel bar is connected to the lateral arc-shaped steel bar, due to its heavy weight, thick steel bars and good rigidity, it is difficult to carry out manual handling and docking. A lower operating platform 6 is arranged near the lower part of the walking trolley 1, which is convenient for arranging and tying the side secondary lining steel bars. Guardrails 7 are arranged on the inner side, front and back sides of the lower operating platform 6 and the telescopic platforms 3. A first ladder 8 is arranged on the front side of the walking trolley 1, and on the front side of the lower operating platform 6 and up to the top of the walking trolley 1. The front ladder is convenient for the telescopic movement of the platform and avoids interference. A second ladder 9 is arranged near the middle of the lower operating platform 6.

[0037] Among them, referring to Figures 1 - 4As shown in FIGS. 8-9, the walking trolley 1 includes four portal frames 101, bottom support longitudinal beams 102, upper support longitudinal beams 103 and a support walking mechanism 104. The four portal frames 101 are arranged at equal intervals longitudinally. Both ends of the bottom are fixedly connected to two bottom support longitudinal beams 102. Between the adjacent two portal frames 101 near the upper ends, they are detachably fixedly connected by an upper support longitudinal beam 103. The support walking mechanism 104 is installed at the bottom of the bottom support longitudinal beam 102. Four detachable arches 105 are provided at the top of the four portal frames 101. A detachable operation platform 106 is lapped between the four arches 105. A detachable fork-shaped reinforcing diagonal beam 108 is provided between the columns 107 of the first two portal frames 101 and the last two portal frames 101 among the four portal frames. A detachable reinforcing diagonal bar beam 110 is provided between the column 107 and the top cross beam 109 of each portal frame 101. Two detachable middle longitudinal beams 111 are also provided between the top cross beams 109 of the adjacent two portal frames 101. The middle longitudinal beams 111 are butted at the top cross beam 109 connected by the reinforcing diagonal bar beam 110. The walking frame composed of four portal frames, bottom support longitudinal beams and upper support longitudinal beams is matched with the fork-shaped reinforcing diagonal beam and the reinforcing diagonal bar beam at the set positions. The whole walking frame has high support stiffness and strength, and the support is stable and reliable. An arched operation platform is provided at the top of the walking frame, which is convenient for the operator to arrange and bundle steel bars; the arch 105 includes a vertically extending beam 132, an inclined beam 133 and a horizontal beam 134. Two vertically extending beams 132 are used, which are respectively the extension parts of the upper ends of the two columns 107. One end of each vertically extending beam 132 is detachably fixedly connected to one end of the inclined inclined beam 133. The other ends of the two inclined beams 133 are detachably fixedly connected to both ends of the horizontal beam 134. A ladder-step operation platform 135 is detachably fixedly connected between the inclined beams 133 of the adjacent two arches 105. A horizontal plate 136 is detachably fixedly connected between the adjacent two horizontal beams 134. 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. An arch longitudinal beam 138 is detachably fixedly connected between the adjacent two vertically extending beams 132 near the top longitudinally. The whole arch and the operation platform have good support stability. The walking truss is a detachable structure, which is convenient for loading and reusing, reduces costs, and the ladder-step operation platform 135 and the horizontal plate 136 form the whole operation platform 106.

[0038] If the card slot of the steel bar clamp is used, after the steel bar bundling is completed, if the walking trolley needs to be moved, the steel bar clamp needs to be removed, which is time-consuming and laborious. Moreover, for the next section of reinstallation and use, reinstallation and adjustment of the positioning are still required, which is even more time-consuming and laborious. In order to facilitate the separation of the top arc-shaped steel bar of the steel bar clamp on the top of the walking trolley after bundling, a support walking mechanism that can be lifted is provided. Refer to Figures 1 - 4As shown in FIGS. 8-9, the supporting walking mechanism 104 includes a power walking wheel set 112, an auxiliary walking wheel set 113 and a lifting and supporting mechanism 114. The power walking wheel set 112 is provided with a power motor for driving its walking. The power walking wheel set 112 and the auxiliary walking wheel set 113 are respectively installed on the front side and the rear side of the bottom supporting longitudinal beam 102. The middle part of the top side of the roller frame 115 of the power walking wheel set 112 is rotatably connected to the rotating table 116 of the bottom supporting longitudinal beam 102. The edge of the top side of the roller frame 115 is hinged to the end of the cylinder rod of the steering hydraulic cylinder 117 through a hinge pin. The other end (the tail of the cylinder seat) of the steering hydraulic cylinder 117 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 it when the power walking wheel set 112 is walking in a straight line normally. After the steering hydraulic cylinder 117 expands and contracts, it can drive the power walking roller set 112 to rotate. Four lifting and supporting mechanisms 114 are used and are symmetrically installed in pairs on the left and right on the two bottom supporting longitudinal beams 102. After the lifting and supporting mechanism 114 extends out, it can suspend the power walking wheel set 112 and the auxiliary walking wheel set 113. By using roller walking, it is convenient to move the walking trolley. When the walking reaches the set position, by using the lifting and supporting mechanism, better stable support can be achieved. The contact surface of the lifting and supporting mechanism is convenient to be set larger, which is larger than the contact surface of the roller set and is more conducive to stable support. Moreover, an even more important point of using the lifting and supporting mechanism is that after the steel bars are positioned and tied, it is necessary to separate the steel bars positioned in the card slots from the card slot plates, and then lower the height so that the steel bars in the card slots are separated from the card slots, which is conducive to moving the walking trolley to the next working station for the use of tying the steel bars in the next section of the tunnel.

[0039] Among them, the lifting and supporting mechanism 114 includes a lifting hydraulic cylinder 118, a supporting 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 supporting longitudinal beam 102 and a vertical through hole 122 is provided opposite to the bottom supporting longitudinal beam 102. The cylinder block of the lifting hydraulic cylinder 118 is fixedly connected to the top inside 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 supporting column 119. The lower end of the supporting column 119 movably passes through the vertical through hole 122 and abuts against the cushion block 121. At least one cushion block 121 is adopted. An auxiliary lifting mechanism 124 is installed beside the lifting and supporting mechanism. Both ends of the auxiliary lifting mechanism can abut against the ground and the bottom surface of the bottom supporting longitudinal beam 102. By adopting the auxiliary lifting mechanism, it is possible to level the four-corner lifting and supporting mechanism by adding gaskets after support. Since the ground is not completely flat, the auxiliary lifting mechanism 124 includes an auxiliary hydraulic cylinder 125, a cylinder block fixing frame 126 and a spherical hinge seat 127. The cylinder block of the auxiliary hydraulic cylinder 125 is fixedly connected inside the sleeve of the cylinder block fixing frame 126. A supporting abutting plate is provided at the upper end of the sleeve to increase the supporting contact surface. A plurality of reinforcing ribs are uniformly arranged circumferentially between the supporting abutting plate and the sleeve to improve the supporting stability of the cylinder block fixing frame. The cylinder rod of the auxiliary hydraulic cylinder 125 is hinged to the spherical hinge seat 127. A lower abutting plate is provided at the lower end of the spherical hinge seat, and the lower abutting plate contacts the ground to increase the contact area. By adopting the spherical hinge seat, it is possible to adapt to the unevenness of the bottom surface and avoid generating 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 circumferential L-shaped flange 130 is welded to the bottoms 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 circumferential flange, on the one hand, is convenient for stable and reliable fixed connection with the bottom supporting longitudinal beam 102, improving the connection stability and reliability. On the other hand, the circumferential flange reinforces the lower ends of the two vertical I-beams. The overall stability of the inverted U-shaped frame 120 is better, the strength is higher, and the rigidity is better. The supporting column and the cushion block are connected by bolts. The cushion block is provided with different height specifications, which is convenient for use according to actual needs. Vertical ribs 131 are provided on the side of the double I-shaped bottom supporting longitudinal beam 102 opposite to the L-shaped flange 130 to improve the supporting strength and rigidity here and ensure stability. The supporting column 119 is made of a vertical square tube, and flanges are provided at both ends.

[0040] Among them, in order to realize the auxiliary support positioning of the two ends of the top arc-shaped steel bars, the lateral arc-shaped steel bar positioning, and the positioning of the outermost steel bars on the side, two telescopic platforms are provided, that is, referring to Figures 1 - 4As shown in FIGS. 10 - 14, the telescopic platform 3 includes an upper telescopic platform 301 and a middle telescopic platform 302. Both the upper telescopic platform 301 and the middle telescopic platform 302 include three groups of fixed plates 303 and movable plates 304. The fixed plates 303 are fixedly connected to the tops of two I - beams 305. The bottom of the movable plate 304 is provided with a framework (the overall thickness of the framework and the movable plate is less than the height of the side groove of the I - beam 305, which is convenient for embedding into the side groove to achieve sliding). The two I - beams 305 of the upper telescopic platform 301 are fixedly connected to the top of the vertically extending beam 132 and the side of the arch vertical beam 137 to form a cantilever structure. The two I - beams 305 can also play a role in strengthening the strength and rigidity of the arch part. The two I - beams 305 of the lower telescopic platform 302 are fixedly connected to the column 107 to form a lower cantilever structure. The two I - beams 305 are fixedly connected to the column 107 and the vertically extending beam 132 by cantilever diagonal braces 314, which play a role in strengthening the cantilever structure. Both inner ends of the two sides of the movable plate 304 are provided with two lateral rollers 306, two bottom rollers 307 and two top rollers 308. The bottom roller 307 and the top roller 308 are symmetrically installed up and down in the vertical groove 316 provided at the right end of the first support 315. The first support 315 includes a bottom plate and vertically arranged plates fixedly connected to the right side. The two vertically arranged plates and the bottom plate form the vertical groove 316. Two connecting plates 317 are symmetrically arranged up and down near the left end of the first support 315. The second support 318 is symmetrically fixedly connected between the two connecting plates 317 by bolts. The second support 318 includes a Z - shaped plate with a vertical bend and a middle plate fixedly connected between the two Z - shaped plates. The left end of the Z - shaped plate abuts against an adjusting screw 319. The adjusting screw 319 is screwed on the adjusting seat 320. The adjusting seat 320 is fixedly connected to the first support 315. The through - hole of the connecting plate of the second support 318 is a horizontal strip - shaped hole. Loosen the bolts fixing the second support, rotate the adjusting screw, 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 and avoiding the vertical groove and the top roller and the bottom roller, and then contacting the side groove. The free end of the second support 318 is rotatably connected to the lateral roller 306. The single - side lateral roller 306, bottom roller 307 and top roller 308 are respectively located on the side, bottom and top of the side groove 313 of the I - beam 305. An auxiliary idler 309 is arranged at the end face of the I - beam 305. The auxiliary idler 309 abuts against the bottom of both sides of the movable plate 304. The auxiliary idler 309 is rotatably connected to one end of two horizontal auxiliary connecting plates 321. The auxiliary connecting plates 321 are rotatably connected near the middle to the auxiliary hinge seat 322 fixed to the bottom of the I - beam 305. A top fixing plate 323 and a right - hand fixing plate 324 are vertically connected between the two auxiliary connecting plates 321 near the other end. The top fixing plate 323 is screwed with a swing adjusting screw 325. The free end of the screw rod of the swing adjusting screw 325 abuts against the bottom surface of the I - beam 305.The swing adjustment screw 325 is helically connected with a fastening nut 326. The fastening nut 326 is in contact with the top fixing plate 323. By rotating the swing adjustment screw, the pitching angle adjustment of the two auxiliary connecting plates can be realized, so that the auxiliary roller can suspend and support the movable plate. The outer end of the movable plate 304 is detachably connected with a lateral card slot plate 310. Near the outer end at the bottom of the movable plate 304, there are articulated double ears 311. The articulated holes of the articulated double ears 311 are vertical strip holes. The setting of the vertical strip holes facilitates a certain small-angle pitching yield during the pushing process, and thus can also play a certain self-adaptive abutting role on the arc-shaped steel bars. The articulated double ears 311 are hinged to the cylinder rod of the telescopic hydraulic cylinder 312. The cylinder seat end of the telescopic hydraulic cylinder 312 is hinged to the walking trolley 1 (the upper telescopic platform 301 is hinged to the tail hinge seat arranged at the bottom of the upper I-beam 305, and the lower telescopic platform 301 is hinged to the tail hinge seat arranged on the side of the column 107). At the bottom of the cylinder seat of the telescopic hydraulic cylinder 312 near the end where the cylinder rod expands and contracts, there is an auxiliary support frame 327 for placing the bottom surface of its cylinder seat. The auxiliary support frame 327 is fixedly connected to the two I-beams 305. By setting the auxiliary support frame, adopting a double telescopic platform, and using a telescopic hydraulic cylinder to drive the movable plate to expand and contract at the bottom of the fixing plate, the expansion and contraction are fast and stable. Moreover, the hydraulic cylinder itself has elastic characteristics and can also play a certain buffering role. By using lateral rollers and bottom rollers to be embedded in the I-beam grooves, the structure is compact. Cooperating with the auxiliary roller, it can reduce the friction during the pushing process of the movable plate and reduce the noise. The rollers are located in the grooves and can also play a certain role in noise reduction. Installing a detachable lateral card slot plate (with the same structure as the top card slot plate), after extending, it abuts against the vertical 9 steel bars on the outermost side of the secondary lining side (such as, Figure 14 ), and can also position the steel bars on the outermost side of the secondary lining side and can perform operations on the operating platform, improving the positioning accuracy of the lateral steel bars and improving the binding efficiency.

[0041] In view of the situation that after a hoisting device hoists a pile of arc-shaped steel bars and places them on the fixture, it is time-consuming and laborious to move them manually on the top of the walking platform, an auxiliary device is needed to push the steel bars to reduce the labor intensity. That is, a tunnel secondary lining steel bar binding trolley further includes a steel bar moving mechanism 5 installed on the support cross beam 1 202. Refer to Figures 15 - 18, the steel bar moving mechanism 5 includes two walking roller groups 501 and a connecting rod 502 connecting the wheel frames of the two walking roller groups 501. On one side of the walking roller group 501, there is a horizontal U-shaped steel bar placement groove 503. The outer end of the opening of the horizontal U-shaped steel bar placement groove 503 is a flared opening. A locking mechanism is provided 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 support crossbeams 1 for pushing, realizing the rapid positioning of the curved steel bars, saving time and effort, reducing labor intensity, and having stable and fast directional walking, not easily damaging the steel bars, and not colliding with other bundled steel bars, with higher operation safety. The horizontal U-shaped placement groove is used for placing steel bars, which is convenient for quickly pushing the placed steel bars into the groove and locking them with a locking mechanism. One person can complete the loading and transportation of the steel bars, reducing labor costs. Moreover, without the need for personnel to run, the steel bars can be pushed into the groove, saving time and effort. The locking mechanism can be remotely operated, which is convenient for operation; 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 groove opening of the U-shaped steel bar placement groove 503 in its 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 on a hinge seat 511 provided on the upper end face of the walking roller group 501. The lengths of the connecting rod 505 and the rocker arm 506 that pull the elastic locking pin 504 ensure that the horizontal U-shaped steel bar placement groove 503 is completely opened. The other end of the rocker arm 506 is connected to one end of the pull rope 507 through a connecting pin 512. The pull rope 507 bypasses a 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 bypasses a second fixed pulley 509 installed near the middle of the connecting rod 505 and is then connected to a crank handle 510. The crank handle 510 is hinged on a hinge ear 513 near the middle of the connecting rod 502. The crank handle 510 is similar to a bicycle brake handle. Pressing the handle pulls the pull rope 507. The hand-held end of the crank handle 510 is connected to the connecting rod 502 through a hanging ring 525, keeping the elastic locking pin 504 open. The locking mechanism can be remotely operated, reducing the number of personnel. While opening, rotating the connecting rod can send out the steel bars. The elastic locking pin 504 vertically passes through a spring sleeve 514 and the upper side wall of the horizontal U-shaped steel bar placement groove 503. A first return spring 515 is sleeved on the elastic locking pin 504. The lower end of the first return spring 515 abuts against an annular boss 516 provided on the elastic locking pin 504, and the upper end abuts against a cover 517 of the upper end of the spring sleeve 514. A through hole for the elastic locking pin 504 to pass through is provided in the middle of the cover 517. The lower end of the spring sleeve 514 is fixedly connected to a groove in 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 limits the position, the groove opening of the U-shaped steel bar placement groove 503 is close to the slot 203.A limit mechanism is set up. After quick limiting is facilitated, the pushed steel bars can be quickly sent to the designated card slots, reducing excessive movement, lowering manual operation, and saving more time and effort. The limit mechanism includes a limit roller 518, a lifting rod 519, and a second return spring 520. The limit 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 limit pin 521 vertically fixedly connected to the lifting rod 519 and the inner top surface of the open cavity 522, and the lower limit pin 521 is located inside the open cavity 522. The lifting rod 519 movably passes through the open cavity 522. The back of the open cavity 522 is fixedly connected to the outer side surface 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. The distance between the card slot of the card slot plate opposite to the U-shaped steel bar placement groove and the positioned limit roller is at least one time the distance between two adjacent card slots. When the limit roller 518 reaches the top of a card slot through the roller during walking, under the action of the return spring, a certain positioning effect will be achieved. When continuing to walk, under the action of the return spring, it will exit the card slot and enter the positioning of the next position, following the positioning, which is convenient and fast. The screw passes through the through hole 524 of the limit connecting plate 523, which is a horizontal strip-shaped through hole. The horizontal strip-shaped through hole facilitates adjusting the card slot of the card slot plate opposite to the horizontal U-shaped steel bar placement groove after limiting, so as to adapt to the adjustment of different-spacing card slots on the card slot plate during different steel bar bindings, greatly increasing the application range and reducing costs.

[0042] 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 support longitudinal beam, and lock the power walking wheel group and the auxiliary walking wheel group with brake shoes. Move the two bottom support longitudinal beams to the set position, install the adjacent two portal frames in front, and install the upper support longitudinal beam and the fork-shaped reinforcement diagonal beam. Install the adjacent two portal frames behind, and install the upper support longitudinal beam and the fork-shaped reinforcement diagonal beam, and install the middle longitudinal beam between the adjacent two portal frames to keep the walking frame balanced before and after installation. Install the reinforcement diagonal bar beam to reinforce the columns and the top cross beam. Install the lower operation platform and install the fixed plates of the middle telescopic platform in sections. Installing first facilitates up and down operations. Then install the arch structure. After installing the arch structure, install the step operation platform and the horizontal platform. Install the movable plate of the telescopic platform. Then install the guardrails of the lower operation platform and the telescopic platform and the top guardrail. Finally, install the top steel bar positioning fixture. The adopted assembly sequence takes into account the stability and safety of the large trolley during the installation process, avoiding operation risks caused by uneven force. Moreover, from the perspective of operation convenience, install the operation platform at an appropriate time to arrange the rest of the equipment, which is more convenient for operation. Install the movable plate of the telescopic platform and its driving hydraulic cylinder at the back to avoid damage to the hydraulic cylinder. Finally, install the top fixture, which is convenient for the operator to operate and install on the top of the walking trolley, with better operation safety, and is also convenient for placing and assembling the parts for top steel bar positioning and clamping.

[0043] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the spirit and principle of the design of the present invention, various deformations and improvements made by those skilled in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A steel bar clamp for a steel bar trolley, characterized in that: The invention comprises a slot plate (201), a first supporting beam (202), a second supporting beam (204) and a third supporting beam (205). The slot plate (201) is provided with two U-shaped slots (203) evenly spaced on the top, and the bottom is fixedly connected to the two first supporting beams (202) respectively. The two first supporting beams (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 (215). The second supporting beam (204) is fixedly connected to the front and rear directions of the top of the arch of the walking trolley (1) symmetrically. ) are symmetrically mounted on the top of the arch of the trolley (1) and are respectively located outside the two supporting crossbeams 1 (202); two supporting crossbeams 3 (205) are symmetrically fixedly connected at the two corners of the top of the arch of the trolley (1) and are tangent to the supporting arc-shaped steel bars (4); supporting crossbeam 2 (204) and supporting crossbeam 3 (205) are respectively fixedly connected to the top of the arch of the trolley (1) using multiple top supporting columns 2 (216) and top supporting columns 3 (217).

2. A steel bar clamp for a steel bar trolley according to claim 1, characterized in that: The slot plate (201) is formed by butting a plurality of short slot plates (206), two adjacent short slot plates (206) are fixedly connected via two butting plates (207), each short slot plate (206) is provided with a horizontal strip hole (214), and two connecting ears (208) are provided on the supporting crossbeam (202) directly opposite to the horizontal strip hole (214) on both sides, and the two ears (208) are fixed to the short slot plate (206) by bolts passing through the horizontal strip hole (214).

3. The steel bar clamp for a steel bar trolley according to claim 1, characterized in that: The first supporting crossbeam (202) is provided with a positioning groove (209), the lower end of the slot plate (201) is inserted into the positioning groove (209), and a shock-absorbing rubber layer (211) is provided in the positioning groove (209).

4. The steel bar clamp for a steel bar trolley according to claim 1, characterized in that: A positioning pin (210) is provided between two adjacent short slot plates (206).

5. The steel bar clamp for a steel bar trolley according to claim 1, characterized in that: Two adjustment seats (212) are respectively arranged at both ends of the supporting cross beam (202), and an adjustment screw (213) is spirally connected to each adjustment seat (212), and the inner end of the adjustment screw (213) abuts against the middle of the end surface of the slot plate (201).

6. The steel bar clamp for a steel bar trolley according to claim 1, characterized in that: A first strengthening diagonal brace (218) is fixedly connected near the top between the adjacent top support column 1 (215) and the second top support column (216), and a second strengthening diagonal brace (219) is fixedly connected near the top between the adjacent top support column 2 (216) and the third top support column (217).

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