Beam transporting vehicle shared by single line and double lines

Abstract

The invention relates to a single-line and double-line shared beam transporting vehicle which comprises two front vehicle bodies, two rear vehicle bodies, a beam transporting device, a beam transporting device, a beam transporting device and a beam transporting device, the two front vehicle bodies are arranged in parallel at intervals, and a front cab is arranged at the front end of each front vehicle body; the two rear vehicle bodies are located behind the two front vehicle bodies, the two rear vehicle bodies are detachably connected through a connecting cross beam, the two front vehicle bodies are detachably connected through a connecting cross beam, and a rear cab is arranged at the rear end of each rear vehicle body; the front car body is provided with a front beam carrying trolley, and the rear car body is provided with a rear beam carrying trolley. The two front vehicle bodies and the two rear vehicle bodies are arranged, the front beam carrying trolleys are installed on the front vehicle bodies, the rear beam carrying trolleys are installed on the rear vehicle bodies, when single-line erection is needed, one front vehicle body and one rear vehicle body can be used, and when double-line erection is needed, the front beam carrying trolleys and the rear beam carrying trolleys can be used. The single-line beam transporting vehicle and the double-line beam transporting vehicle can be switched by additionally arranging the front vehicle body and the rear vehicle body through the connecting cross beam, the construction efficiency is improved, the construction progress is accelerated, each vehicle body is provided with an independent cab, and independent driving can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of high-speed railway beam erection equipment, and in particular to a beam transport vehicle for use with single and double tracks. Background Art

[0002] As the scale of high-speed rail construction continues to increase, the terrain, geology, and environmental conditions it faces are becoming more and more complex. Often, on a high-speed rail line, there is a need to erect both double-track prefabricated box girders and single-track prefabricated box girders. The current solution is mostly to use two sets of equipment, namely equipment for erecting double-track box girders and equipment for erecting single-track box girders, and the two cannot be shared. At the same time, a beam transport vehicle is required during the erection of prefabricated box girders. In the relevant technology, the beam transport vehicles used for the erection of prefabricated box girders generally include separate single-track beam transport vehicles and separate double-track beam transport vehicles. In order to meet the needs of erecting double-track prefabricated box girders and single-track prefabricated box girders, it is necessary to replace the beam transport vehicle as a whole during the construction process, such as replacing the single-track beam transport vehicle as a whole with a double-track beam transport vehicle.

[0003] However, the method of replacing the whole vehicle is time-consuming and laborious in the whole process, which seriously affects the construction efficiency and causes the construction progress to stagnate. Therefore, it is necessary to design a single-track and double-track shared beam transport vehicle to overcome the above problems. Summary of the invention

[0004] The present application provides a single-track and double-track shared beam transport vehicle, which can solve the technical problem in the related technology that replacing the entire vehicle is time-consuming and labor-intensive, seriously affecting the construction efficiency and causing the construction progress to stagnate.

[0005] In the first aspect, an embodiment of the present application provides a single-track and double-track shared beam transport vehicle, which includes: two front car bodies, the two front car bodies are arranged in parallel and spaced apart, and a front driver's cab is provided at the front end of each front car body; two rear car bodies, the two rear car bodies are located behind the two front car bodies, and the two rear car bodies and the two front car bodies are detachably connected by connecting cross beams, and a rear driver's cab is provided at the rear end of each rear car body; the front car body is equipped with a front beam-carrying trolley, and the rear car body is equipped with a rear beam-carrying trolley.

[0006] In combination with the first aspect, in one embodiment, the front vehicle body includes a front main beam, the front driver's cab is installed at the front end of the front main beam, the front main beam is provided with two front single-track rails and a front double-track rail located between the two front single-track rails, and the front load beam trolley is slidably installed on the front single-track rail or the front double-track rail.

[0007] In combination with the first aspect, in one embodiment, the front main beam is further provided with a single-vehicle lifting eye beam, and the front end of the front main beam is provided with a front cylinder support leg, and the rear end of the front main beam is provided with a fuel tank.

[0008] In combination with the first aspect, in one embodiment, the rear vehicle body includes a rear main beam, the rear driver's cab is installed at the rear end of the rear main beam, the rear main beam is provided with two rear single-track rails and a rear double-track rail located between the two rear single-track rails; the rear pack beam trolley is slidably installed on the rear single-track rail or the rear double-track rail.

[0009] In combination with the first aspect, in one embodiment, the rear main beam is further provided with a rear leg support seat and a backpack mounting position, the front, middle and / or rear of the rear main beam are installed with rear cylinder legs, and the rear main beam is also provided with a double-track trolley connecting plate.

[0010] In combination with the first aspect, in one embodiment, the rear main beam includes a main support beam and a wheel group support beam fixed on opposite sides of the main support beam, so that the rear main beam is T-shaped, and the wheel group support beam on each side is provided with a wheel group installation interface.

[0011] In combination with the first aspect, in one embodiment, the front pack beam trolley includes a single-track front pack beam trolley and a double-track front pack beam trolley, and the single-track front pack beam trolley and the double-track front pack beam trolley are selectively installed on the front vehicle body; the rear pack beam trolley includes a single-track rear pack beam trolley, a double-track rear pack beam trolley and a dedicated line rear pack beam trolley, and the single-track rear pack beam trolley, the double-track rear pack beam trolley and the dedicated line rear pack beam trolley are selectively installed on the rear vehicle body.

[0012] In combination with the first aspect, in one embodiment, the single-line front load beam trolley includes: a single-line front lower trolley frame and a single-line front upper trolley frame, the single-line front upper trolley frame is slidably mounted on the single-line front lower trolley frame via a first slide plate, and the single-line front upper trolley frame is rotatably mounted on the single-line front lower trolley frame via a first pin shaft, and the single-line front lower trolley frame is slidably mounted on the front vehicle body via a second slide plate; a first sensor, the first sensor is installed between the single-line front lower trolley frame and the single-line front upper trolley frame, and is used to monitor the deflection angle of the single-line front upper trolley frame.

[0013] In combination with the first aspect, in one embodiment, the single-line front lower stage frame is also provided with a first rotating stop for limiting the deflection angle of the single-line front upper stage frame; the single-line front lower stage frame is also fixed with a first trolley limit seat and a first cylinder pin, and the single-line front lower stage frame is fixed to the front car body through the first trolley limit seat and the first cylinder pin.

[0014] In combination with the first aspect, in one embodiment, the dedicated line rear pack beam trolley includes: a dedicated line rear lower trolley frame and a dedicated line rear upper trolley frame, the dedicated line rear upper trolley frame is rotatably mounted on the dedicated line rear lower trolley frame, the dedicated line rear lower trolley frame is equipped with a chain tensioning device, and the chain tensioning device is provided with an adjustable roller circulating chain; a front guide wheel and a rear guide wheel and a driving device, the driving device drives the adjustable roller circulating chain to move through the front guide wheel and the rear guide wheel, so that the dedicated line rear lower trolley frame moves forward and backward.

[0015] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0016] By setting up two front car bodies and two rear car bodies, and installing the front beam-carrying trolley on the front car body and the rear beam-carrying trolley on the rear car body, when single-line erection is required, one front car body and one rear car body can be used, and when double-line erection is required, the conversion between single-line and double-line beam transport vehicles can be achieved by connecting the crossbeams and adding another front car body and rear car body. There is no need to replace the entire beam transport vehicle, which improves construction efficiency and speeds up construction progress. Each car body is equipped with an independent driver's cab and can be driven independently, which solves the technical problems in related technologies that replacing the entire vehicle is time-consuming and labor-intensive, seriously affecting construction efficiency and causing stagnation of construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic top view of a single-track and double-track shared beam transport vehicle in a double-track mode provided in an embodiment of the present application;

[0019] Figure 2 A schematic front view of a single- and double-track shared beam transport vehicle in a double-track mode provided in an embodiment of the present application;

[0020] Figure 3 A schematic top view of a single-track and double-track shared beam transport vehicle in a single-track mode provided in an embodiment of the present application;

[0021] Figure 4 A schematic diagram of the structure of two front vehicle bodies provided in an embodiment of the present application;

[0022] Figure 5 A schematic front view of a front vehicle body provided in an embodiment of the present application;

[0023] Figure 6A schematic diagram of the structure of two rear vehicle bodies provided in an embodiment of the present application;

[0024] Figure 7 A schematic front view of a rear vehicle body provided in an embodiment of the present application;

[0025] Figure 8 A schematic cross-sectional view of a rear vehicle body provided in an embodiment of the present application;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of the rear vehicle body provided in an embodiment of the present application;

[0027] Fig.10 A schematic diagram of the structure of the front oil cylinder support leg on the front vehicle body in a single-line mode provided in an embodiment of the present application;

[0028] Fig.11 A schematic diagram of the structure of the front oil cylinder support leg on the front vehicle body in a dual-line mode provided in an embodiment of the present application;

[0029] Fig.12 A schematic diagram of the structure of the rear oil cylinder support leg on the rear vehicle body in a single-line mode provided in an embodiment of the present application;

[0030] Fig.13 A schematic diagram of the structure of the rear oil cylinder legs on the rear vehicle body in a dual-line mode provided in an embodiment of the present application;

[0031] Fig.14 A schematic diagram of the structure of a wheel set provided in an embodiment of the present application;

[0032] Fig.15 A schematic diagram of the structure of the steering mechanism provided in an embodiment of the present application;

[0033] Fig.16 A schematic diagram of the structure of the front beam trolley provided in an embodiment of the present application;

[0034] Fig.17 A schematic diagram of the structure of a rear beam trolley provided in an embodiment of the present application;

[0035] Fig.18 A schematic diagram of the structure of a single-track front beam carriage provided in an embodiment of the present application;

[0036] Fig.19 A schematic diagram of the structure of a double-track front beam carriage provided in an embodiment of the present application;

[0037] Fig. 20 A schematic diagram of the structure of a double-track rear beam trolley provided in an embodiment of the present application;

[0038] Fig.21 A schematic diagram of the structure of a single-track rear beam carriage provided in an embodiment of the present application;

[0039] Fig. 22 A schematic structural diagram of the dedicated line rear beam trolley provided in an embodiment of the present application.

[0040] In the figure: 1, front car body; 11, front main beam; 12, front single-track track; 13, front double-track track; 14, front oil cylinder leg; 15, fuel tank; 21, front driver's cab; 22, rear driver's cab; 3, rear car body; 31, rear main beam; 311, main support beam; 312, wheel support beam; 313, wheel installation interface; 314, anchor hole for mounting the pack frame for the packing condition; 315, anchor hole for mounting the pack frame for the turn-on-the-spot condition; 32, rear single-track track; 33, rear double-track track; 34, rear leg support seat; 35, rear oil cylinder leg; 36, double-track trolley connection plate; 4, single-car lifting eye beam; 5, connecting crossbeam;

[0041] 6. Front beam trolley; 61. Single-line front beam trolley; 611. Single-line front lower platform frame; 612. Single-line front upper platform frame; 613. First sensor; 614. First rotation stop; 615. First trolley limit seat; 616. First cylinder latch; 617. Hydraulic traction assembly; 62. Double-line front beam trolley; 621. Double-line front lower platform frame; 622. Double-line front upper platform frame; 623. Second sensor; 624. First Second rotation stopper; 625, second trolley limit seat; 626, second oil cylinder latch; 7, rear beam trolley; 71, single-line rear beam trolley; 711, single-line rear lower trolley frame; 712, single-line rear upper trolley frame; 713, third sensor; 714, third rotation stopper; 72, double-line rear beam trolley; 721, double-line rear lower trolley frame; 722, double-line rear upper trolley frame; 723, fourth sensor; 724, fourth rotation stopper;

[0042] 73. Special line rear beam trolley; 731. Special line rear lower trolley frame; 732. Special line rear upper trolley frame; 733. Chain tensioning device; 734. Front guide wheel; 735. Rear guide wheel; 736. Driving device; 737. Fifth sensor; 738. Fifth rotation stopper; 739. Third trolley limit seat; 730. Third oil cylinder latch;

[0043] 8. Wheel set; 81. Slewing bearing; 811. Slewing arm; 82. Axle; 83. Bending arm; 85. Balancing cylinder; 86. Tire; 87. Angle sensor; 9. Steering mechanism; 91. Steering cylinder; 92. Steering connecting rod; 93. Cylinder mounting seat; 101. Front vehicle power system; 102. Rear vehicle power system. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The embodiment of the present application provides a single-track and double-track shared beam transport vehicle, which can solve the technical problem in the related technology that replacing the entire vehicle is time-consuming and labor-intensive, seriously affecting the construction efficiency and causing stagnation of the construction progress.

[0046] See also Figures 1 to 3 As shown, a single- and double-track shared beam transport vehicle provided in an embodiment of the present application may include: two front car bodies 1, the two front car bodies 1 are arranged in parallel and spaced apart, and a front driver's cab 21 is provided at the front end of each front car body 1; two rear car bodies 3, the two rear car bodies 3 are located behind the two front car bodies 1, and the two rear car bodies 3 and the two front car bodies 1 are detachably connected by a connecting cross beam 5, and a rear driver's cab 22 is provided at the rear end of each rear car body 3; the front car body 1 is equipped with a front beam-carrying trolley 6, and the rear car body 3 is equipped with a rear beam-carrying trolley 7.

[0047] See also Figure 4 As shown, in this embodiment, the two front car bodies 1 have the same structure, and the two front car bodies 1 are spaced apart in the left-right direction. The two front car bodies 1 can be connected to form a rigid whole through a plurality of connecting beams 5, and the connecting beams 5 can be removed from the front car body 1 or installed, for example, a detachable connection can be achieved by bolts and the like; the two rear car bodies 3 also have the same structure, and the two rear car bodies 3 are spaced apart in the left-right direction, and the two rear car bodies 3 can be connected to form a rigid whole through a plurality of connecting beams 5, and the connecting beams 5 can also be removed from the rear car body 3. A rear driver's cab 22 is installed at the rear end of each rear car body 3, and a front driver's cab 21 is also installed at the front end of each front car body 1. After the beam is transported, the rear car body 3 and the front car body 1 can be driven to move independently, and the front and rear car bodies 3 do not need hardware connection, and synchronous control movement can be achieved through wireless communication. The front beam trolley 6 installed on the front car body 1 and the rear beam trolley 7 installed on the rear car body 3 are both used to support and transport the box beam.

[0048] In this embodiment, two front car bodies 1 and two rear car bodies 3 are arranged, and a front beam-carrying trolley 6 is installed on the front car body 1, and a rear beam-carrying trolley 7 is installed on the rear car body 3. When single-line erection is required, one front car body 1 and one rear car body 3 can be used. When double-line erection is required, the conversion of the single-line and double-line beam transport vehicles can be realized by adding a connecting beam 5 and then adding another front car body 1 and a rear car body 3. The connecting beam 5 connects the front car body 1 and the rear car body 3 on the left and right sides to form a stable frame of the car body. A single front car body 1 and a single rear car body 3 are shared by the single and double lines, and there is no need to replace the overall beam transport vehicle. The conversion of the single-line and double-line beam transport vehicle can be completed by adding or reducing the middle connecting beam 5 and the front car body 1 and the rear car body 3, thereby improving construction efficiency and accelerating construction progress. In addition, each car body is provided with an independent driver's cab and can be independently driven, thereby solving the technical problems in the related technology that replacing the entire vehicle is time-consuming and labor-intensive, seriously affecting construction efficiency, and causing stagnation of construction progress.

[0049] See also Figure 1 and Figure 4 As shown, in one embodiment, the front car body 1 includes a front main beam 11, the front driver's cab 21 is installed at the front end of the front main beam 11, the front main beam 11 is provided with two front single-track rails 12 and a front double-track rail 13 located between the two front single-track rails 12, and the front beam-carrying trolley 6 is slidably installed on the front single-track rail 12 or the front double-track rail 13. In this embodiment, the front car body 1 and the rear car body 3 are both main components that bear and transmit the beam transport load. The front car body 1 and the rear car body 3 have single-track and double-track modes. The beam transport vehicle in the double-track mode can be disassembled into two single-track modes for use, meeting the use requirements of different combination modes. A single front car body 1 includes a front main beam 11. When a single-track beam transport vehicle is needed, the front beam-carrying trolley 6 is slidably installed on the front single-track rail 12 of the single front car body 1; when a double-track beam transport vehicle is needed, the front beam-carrying trolley 6 is slidably installed on the front double-track rails 13 of the two front car bodies 1.

[0050] Furthermore, in one embodiment, the front main beam 11 is further provided with a bicycle lifting eye beam 4, and the front end of the front main beam 11 is provided with a front oil cylinder support leg 14, and the rear end of the front main beam 11 is provided with a fuel tank 15. Figure 4 and Figure 5 As shown, a plurality of single-vehicle lifting eye beams 4 can be provided on both sides of the front main beam 11, and a front oil cylinder support leg 14 is provided at the front end of the front main beam 11, preferably a hydraulic oil cylinder support leg. When the rear support leg of the parking beam feeding, maintenance and bridge erection machine is supported on the beam transport vehicle, the front oil cylinder support leg 14 is used to stabilize the whole vehicle and provide partial support reaction force. When the front oil cylinder support leg 14 is used, the front oil cylinder support leg 14 must be supported and padded above the web of the concrete box beam, and must be padded flat and solid. The fuel tank 15 provided at the rear end of the front main beam 11 is a diesel tank.

[0051] Further, in some embodiments, see Figure 1 and Figure 6 As shown, the rear car body 3 includes a rear main beam 31, the rear driver's cab 22 is installed at the rear end of the rear main beam 31, and the rear main beam 31 is provided with two rear single-track rails 32 and a rear double-track rail 33 located between the two rear single-track rails 32; the rear beam-carrying trolley 7 is slidably installed on the rear single-track rail 32 or the rear double-track rail 33. In this embodiment, when a single-track beam transport vehicle is required, the rear beam-carrying trolley 7 is slidably installed on the rear single-track rail 32 of a single rear car body 3; when a double-track beam transport vehicle is required, the rear beam-carrying trolley 7 is slidably installed on the rear double-track rails 33 of two rear car bodies 3.

[0052] On the basis of the above technical solution, in one embodiment, the rear main beam 31 is further provided with a rear leg support seat 34 ( Figure 7 The rear main beam 31 is provided with a rear oil cylinder support leg 35 at the front, middle and / or rear of the rear main beam 31, and the rear main beam 31 is also provided with a double-track trolley connecting plate 36. In this embodiment, by providing a rear support leg support seat 34 on the rear main beam 31, the rear support leg of the bridge erecting machine can be supported on the rear support leg support seat 34 during the beam erection operation. The double-track trolley connecting plate 36 is used to connect the rear beam trolley 7 in the double-track mode.

[0053] In different modes, the installation positions of the cylinder legs are different, as follows:

[0054] The front body 1 has a total of 4 front oil cylinder legs 14. In the single-line mode, the front body 1 is provided with 2 front oil cylinder legs 14, and the center distance is 2300mm (see Fig.10 In the dual-line mode, the two front vehicle bodies 1 are provided with a total of 4 front oil cylinder legs 14, the inner center distance is 5520mm, and the outer center distance is 6700mm (see Fig.11 The front oil cylinder legs 14 are all installed in a fixed manner.

[0055] The rear body 3 has a total of 6 rear oil cylinder legs 35. In the conventional double-line mode, 4 rear oil cylinder legs 35 are set at the rear of the two rear main beams 31, which are placed on both sides of the two rear main beams 31, with an inner center distance of 3100mm and an outer center distance of 5700mm (see Fig.13 As shown), the installation of the rear oil cylinder legs 35 is fixed; in the conventional single-line mode, the rear oil cylinder legs 35 are located at the rear of the rear main beam 31, and two rear oil cylinder legs 35 are provided, which are respectively placed on both sides of the rear main beam 31, and the center distance is 3400mm (see Fig.12As shown), the installation of the rear cylinder legs 35 is a rotary cylinder leg installation. When a U-turn is required, the two rear cylinder legs 35 in the middle of the rear main beam 31 also need to be installed in place. In the Zhuzhao Line special mode, rear cylinder legs 35 are provided at the front, middle and rear of the rear main beam 31, that is, three-axis rear cylinder legs 35 are provided, and each axis is composed of two rear cylinder legs 35, which are placed on both sides of the rear main beam 31, with a center distance of 3400mm. The rear cylinder legs 35 are all installed as rotary cylinder legs.

[0056] In the above embodiment, the mounting position of the pack frame is set as an anchor hole, and the front main beam 11 and the rear main beam 31 are both provided with pack frame mounting anchor holes 314 for the packing operation, and the rear main beam 31 is also provided with pack frame mounting anchor holes 315 for the turn-around operation. There are many holes on the rear main beam 31, and their use conditions are different. A plurality of bicycle lifting eye beams 4 are also provided on the left and right sides of the rear main beam 31.

[0057] Further, in one embodiment, see Figure 8 As shown, the rear main beam 31 includes a main support beam 311 and a wheel set support beam 312 fixed on opposite sides of the main support beam 311, so that the rear main beam 31 is T-shaped, and the wheel set support beam 312 on each side is provided with a wheel set installation interface 313. In this embodiment, the rear main beam 31 is the main load-bearing component, which is a double-web box beam structure. The wheel set support beam 312 is fixed to the left and right sides of the main support beam 311 by welding to form an integrated structure; the rear main beam 31 in this embodiment adopts a T-shape, and the wheel set installation interfaces 313 are distributed on both sides of the rear main beam 31 for installing the wheel set 8, so that the structure of the whole vehicle is compact, which can not only achieve the predetermined working conditions, but also reduce the weight of the whole vehicle and save manufacturing costs; many beam transport vehicles in the related art are too large in size and cannot meet the requirements of portal piers under special working conditions in terms of height and width. The rear main beam 31 of this embodiment adopts a T-shaped single main beam structure, and the wheel sets 8 are symmetrically distributed on the left and right ( Fig. 9 As shown in the figure, the overall structure has good stress resistance. At the same time, compared with the double-main-beam vehicle, the overall structure size is smaller and the manufacturing cost is lower, which can meet some beam-carrying conditions with size requirements. The front main beam 11 also adopts the T-shaped single main beam structure of the rear main beam 31.

[0058] See also Fig.14As shown, the single-track and double-track shared beam transport vehicle also includes a wheel set 8, which adopts a single tire structure on both sides of the axle 82. The wheel set 8 is divided into four types: a driving wheel set 8, a brake wheel set 8, a driven wheel set 8, and a semi-active and semi-driven wheel set 8. The entire wheel set 8 has a total of 20 axes, and the front and rear vehicles have 10 axes each. The wheel set 8 is mainly composed of a slewing bearing 81, an axle 82, a curved arm 83, a swing arm, a balancing cylinder 85, a tire 86, a rim, an angle sensor 87, etc. The axle 82 is divided into a driving axle, a brake axle, a driven axle, and a semi-active and semi-driven axle, which can swing horizontally around the swing arm, and the swing amplitude can adapt to a 40‰ cross slope. The curved arm 83, the balancing cylinder 85, and the swing arm constitute a lifting device, which is a balanced load-bearing mechanism of the wheel set 8, and the balancing amount is ±150mm. The slewing bearing 81 is a rotating component connecting the wheel set 8 and the front body 1 (or the rear body 3), so that the wheel set 8 can rotate relative to the front body 1 (or the rear body 3). Different steering angle combinations of the wheel set 8 can realize the eight-shaped, half-eight-shaped or oblique steering of the whole vehicle. The tire 86 adopts a tubeless tire 86 specially used for engineering vehicles, model: 355 / 65R18GLR31. The rim adopts an engineering machinery rim, model 18-9.75 / 1.5. The angle sensor 87 is installed between the front body 1 (or the rear body 3) and the slewing bearing 81, which can accurately detect the rotation angle of the wheel set 8. A slewing arm 811 is fixed on one side of the slewing bearing 81.

[0059] See also Fig.15 As shown, the single-track and double-track shared beam transport vehicle also includes a steering mechanism 9, which is a driving mechanism for the beam transport vehicle to turn. Every two wheel groups 8 arranged front and back are connected by a steering mechanism 9 to form a group of steering modules. Each steering module can turn independently, and the steering angle range of different axis positions is different. The maximum steering angle range of the first axis of the front body 1, the rear body 3 and the last axis of the rear body 3 is -10° to +10°. By controlling the steering angle of each steering module, the single vehicle or the whole vehicle can achieve eight-shaped steering, half eight-shaped steering and oblique driving. The steering mechanism 9 is mainly composed of a steering cylinder 91, a steering connecting rod 92 and a cylinder mounting seat 93. One end of the steering cylinder 91 is rotatably connected to the slewing arm 811 of one of the wheel groups 8, and the two ends of the steering connecting rod 92 are connected to the slewing arms 811 of the front and rear wheel groups 8. The components are connected by pins and joint bearings; the slewing arm 811 is pushed and pulled by the steering cylinder 91 to drive the front and rear wheel groups 8 to turn.

[0060] Further, in one embodiment, the front beam-carrying trolley 6 includes a single-line front beam-carrying trolley 61 and a double-line front beam-carrying trolley 62, and one of the single-line front beam-carrying trolley 61 and the double-line front beam-carrying trolley 62 is installed on the front car body 1; the rear beam-carrying trolley 7 includes a single-line rear beam-carrying trolley 71, a double-line rear beam-carrying trolley 72 and a dedicated rear beam-carrying trolley 73, and one of the single-line rear beam-carrying trolley 71, the double-line rear beam-carrying trolley 72 and the dedicated rear beam-carrying trolley 73 is installed on the rear car body 3. In this embodiment, the front beam-carrying trolley 6 has two types, double-line and single-line, and both can slide along the track on the front car body 1, carry beams synchronously with the rear car body 3, and realize beam feeding operation. The front beam-carrying trolley 6 is a driven plate trolley. When feeding beams with heavy loads, the front beam-carrying trolley 6 is pushed by the rear car, and travels through the bottom slide of the rear beam-carrying trolley 7. After the beam feeding is completed, it returns empty through the winch and traction system. There are three types of rear beam trolleys 7: double-track, single-track and dedicated-track. Among them, the single-track rear beam trolley 71 and the double-track rear beam trolley 72 are fixed trolleys, and the dedicated-track rear beam trolley 73 is a driving trolley.

[0061] When a single-track beam transport vehicle is needed, a single-track front beam-carrying trolley 61 is installed on the front single-track track 12 of the front car body 1, and a single-track rear beam-carrying trolley 71 is installed on the rear single-track track 32 of the rear car body 3; when a double-track beam transport vehicle is needed, a double-track front beam-carrying trolley 62 is installed on the front double-track tracks 13 of the two front car bodies 1, and a double-track rear beam-carrying trolley 72 is installed on the rear double-track tracks 33 of the two rear car bodies 3. In the Zhuzhao Line dedicated mode, a single-track front beam-carrying trolley 61 is installed on the front single-track track 12 of the front car body 1, and a dedicated line rear beam-carrying trolley 73 is installed on the rear single-track track 32 of the rear car body 3.

[0062] Further, in one embodiment, see Fig.16As shown, in the single-track and double-track mode, the single-track front beam trolley 61 and the double-track front beam trolley 62 are both plate-type structures. The single-track front beam trolley 61 includes: a single-track front lower trolley frame 611 and a single-track front upper trolley frame 612, the single-track front upper trolley frame 612 is slidably mounted on the single-track front lower trolley frame 611 through a first slide plate, and the single-track front upper trolley frame 612 is rotatably mounted on the single-track front lower trolley frame 611 through a first pin shaft, and the single-track front lower trolley frame 611 is slidably mounted on the front vehicle body 1 through a second slide plate; a first sensor 613, the first sensor 613 is installed between the single-track front lower trolley frame 611 and the single-track front upper trolley frame 612, and is used to monitor the deflection angle of the single-track front upper trolley frame 612. In this embodiment, the single-line front lower stage frame 611 can slide back and forth along the front single-line track 12 through the second slide plate, and the single-line front upper stage frame 612 is connected to the single-line front lower stage frame 611 through the first pin shaft located at the center thereof, so that the single-line front upper stage frame 612 can rotate around the first pin shaft by a certain angle (-15°~+15°), which meets the angle deflection requirements of the beam transport vehicle and the concrete beam pieces when transporting or feeding beams, and ensures that the beam transport vehicle can pass through the curved section smoothly; at the same time, by arranging the first slide plate at the bottom of the single-line front upper stage frame 612, the single-line front upper stage frame 612 rotates and slides on the single-line front lower stage frame 611 through the first slide plate, thereby reducing friction.

[0063] Furthermore, in some embodiments, the single-line front lower carriage frame 611 is also provided with a first rotation stopper 614 for limiting the deflection angle of the single-line front upper carriage frame 612; the single-line front lower carriage frame 611 is also fixed with a first carriage limit seat 615 and a first cylinder latch 616, and the single-line front lower carriage frame 611 is fixed to the front carriage body 1 through the first carriage limit seat 615 and the first cylinder latch 616. Fig.18 As shown, four first rotation stops 614 are provided on the single-line front lower stage frame 611, which are arranged at the front and rear sides of the single-line front upper stage frame 612 respectively to limit the rotation angle of the single-line front upper stage frame 612. The first rotation stops 614 are only used as a safety device. During the beam transportation process, the single-line front upper stage frame 612 is not allowed to rotate too much, resulting in continuous force on the first rotation stops 614. A plate-type rubber seat is also fixed on the single-line front upper stage frame 612, which is used to carry the concrete beam piece and has a buffering effect to protect the concrete beam piece.

[0064] In this embodiment, the first trolley limit seat 615 and the first oil cylinder latch 616 constitute a fixing device for the single-line front beam-carrying trolley 61. The first trolley limit seat 615 is located on the upper plane of the front main beam 11, and the first oil cylinder latch 616 is inserted in the front main beam 11. When carrying concrete beam pieces, the first oil cylinder latch 616 and the first trolley limit seat 615 lock the single-line front beam-carrying trolley 61. When the single-line front beam-carrying trolley 61 feeds beams, the first oil cylinder latch 616 must be unlocked first. When the single-line front beam-carrying trolley 61 is reset to the first trolley limit seat 615, the ear plate pin hole of the single-line front lower trolley frame 611 is basically aligned with the first oil cylinder latch 616, so that the first oil cylinder latch 616 can smoothly lock the single-line front beam-carrying trolley 61.

[0065] The single-line front beam-carrying trolley 61 can also include a hydraulic traction assembly 617. The hydraulic traction assembly 617 is composed of a hydraulic winch, a wire rope and a traction bracket to form a winch and traction system. After the single-line front beam-carrying trolley 61 completes beam feeding, the hydraulic winch pulls the single-line front beam-carrying trolley 61 to reset; the hydraulic winch's own pulling force and the wire rope's carrying capacity can only meet the front trolley's no-load sliding. Under heavy-load conditions, the hydraulic winch brake must be opened, and the hydraulic winch is prohibited from being subjected to heavy-load stress.

[0066] See also Fig.19 As shown, the double-track front beam trolley 62 includes: a double-track front lower trolley frame 621 and a double-track front upper trolley frame 622, the double-track front upper trolley frame 622 is slidably mounted on the double-track front lower trolley frame 621 via a third slide, and the double-track front upper trolley frame 622 is rotatably mounted on the double-track front lower trolley frame 621 via a second pin shaft, and the double-track front lower trolley frame 621 is slidably mounted on the front vehicle body 1 via a fourth slide; a second sensor 623, the second sensor 623 is installed between the double-track front lower trolley frame 621 and the double-track front upper trolley frame 622, and is used to monitor the deflection angle of the double-track front upper trolley frame 622. In this embodiment, the double-track front lower stage frame 621 can slide back and forth along the front double-track track 13 through the fourth slide plate, and the double-track front upper stage frame 622 is connected to the double-track front lower stage frame 621 through the second pin shaft located at the center thereof, so that the double-track front upper stage frame 622 can rotate around the second pin shaft by a certain angle (-15°~+15°), which meets the angle deflection requirements of the beam transport vehicle and the concrete beam piece when transporting or feeding beams, and ensures that the beam transport vehicle can pass through the curved section smoothly; at the same time, by arranging the third slide plate at the bottom of the double-track front upper stage frame 622, the double-track front upper stage frame 622 rotates and slides on the double-track front lower stage frame 621 through the third slide plate to reduce friction.

[0067] Furthermore, the double-track front lower stage frame 621 is also provided with a second rotation stopper 624 for limiting the deflection angle of the double-track front upper stage frame 622; the double-track front lower stage frame 621 is also fixed with a second trolley limit seat 625 and a second cylinder latch 626, and the double-track front lower stage frame 621 is fixed to the front vehicle body 1 through the second trolley limit seat 625 and the second cylinder latch 626. Fig.19 As shown, four second rotation stops 624 are provided on the double-track front lower stage frame 621, which are arranged at the front and rear sides of the double-track front upper stage frame 622 respectively to limit the rotation angle of the double-track front upper stage frame 622. The second rotation stops 624 are only used as a safety device. During the beam transportation process, the double-track front upper stage frame 622 is not allowed to rotate too much, resulting in continuous force on the second rotation stops 624. A plate-type rubber seat is also fixed on the double-track front upper stage frame 622, which is used to carry the concrete beam piece and has a buffering effect to protect the concrete beam piece.

[0068] In this embodiment, the second trolley limit seat 625 and the second oil cylinder latch 626 constitute a fixing device for the double-track front beam trolley 62. The second trolley limit seat 625 is located on the upper plane of the front main beam 11, and the second oil cylinder latch 626 is inserted in the front main beam 11. When carrying concrete beam pieces, the second oil cylinder latch 626 and the second trolley limit seat 625 lock the double-track front beam trolley 62. When the double-track front beam trolley 62 feeds beams, the second oil cylinder latch 626 must be unlocked first. When the double-track front beam trolley 62 is reset to the second trolley limit seat 625, the ear plate pin hole of the double-track front lower trolley frame 621 is basically aligned with the second oil cylinder latch 626, so that the second oil cylinder latch 626 can smoothly lock the double-track front beam trolley 62.

[0069] See also Fig.17As shown, in the conventional single-track and double-track mode, the single-track rear beam trolley 71 and the double-track rear beam trolley 72 are both fixed trolleys, the single-track rear beam trolley 71 includes a single-track rear lower trolley frame 711 and a single-track rear upper trolley frame 712, the single-track rear upper trolley frame 712 is slidably mounted on the single-track rear lower trolley frame 711 through the fifth slide, and the single-track rear upper trolley frame 712 is rotatably mounted on the single-track rear lower trolley frame 711 through the third pin shaft, and the single-track rear lower trolley frame 711 is slidably mounted on the rear car body 3 through the sixth slide; the third sensor 713, the third sensor 713 is installed between the single-track rear lower trolley frame 711 and the single-track rear upper trolley frame 712, and is used to monitor the deflection angle of the single-track rear upper trolley frame 712. In this embodiment, the single-line rear lower stage frame 711 can slide back and forth along the rear single-line track 32 through the sixth slide plate, and the single-line rear upper stage frame 712 is connected to the single-line rear lower stage frame 711 through the third pin shaft located at the center thereof, so that the single-line rear upper stage frame 712 can rotate around the third pin shaft by a certain angle (-15°~+15°), which meets the angle deflection requirements of the beam transport vehicle and the concrete beam pieces when transporting or feeding beams, and ensures that the beam transport vehicle can pass through the curved section smoothly; at the same time, by arranging the fifth slide plate at the bottom of the single-line rear upper stage frame 712, the single-line rear upper stage frame 712 rotates and slides on the single-line rear lower stage frame 711 through the fifth slide plate, thereby reducing friction.

[0070] Furthermore, in some embodiments, the single-line rear lower stage frame 711 is further provided with a third rotation stopper 714 for limiting the deflection angle of the single-line rear upper stage frame 712. Fig.21 As shown, four third rotation stops 714 are provided on the single-line rear lower stage frame 711, which are arranged at the front and rear sides of the single-line rear upper stage frame 712 respectively to limit the rotation angle of the single-line rear upper stage frame 712. The third rotation stops 714 are only used as a safety device. During the beam transportation process, the single-line rear upper stage frame 712 is not allowed to rotate too much, resulting in continuous force on the third rotation stops 714. A plate-type rubber seat is also fixed on the single-line rear upper stage frame 712, which is used to carry the concrete beam piece and has a buffering effect to protect the concrete beam piece.

[0071] See also Fig. 20As shown, the double-track rear beam trolley 72 includes a double-track rear lower stage frame 721 and a double-track rear upper stage frame 722, the double-track rear upper stage frame 722 is slidably mounted on the double-track rear lower stage frame 721 through the seventh slide, and the double-track rear upper stage frame 722 is rotatably mounted on the double-track rear lower stage frame 721 through the fourth pin shaft, and the double-track rear lower stage frame 721 is slidably mounted on the rear vehicle body 3 through the eighth slide; the fourth sensor 723, the fourth sensor 723 is installed between the double-track rear lower stage frame 721 and the double-track rear upper stage frame 722, and is used to monitor the deflection angle of the double-track rear upper stage frame 722. In this embodiment, the double-track rear lower stage frame 721 can slide back and forth along the rear double-track track 33 through the eighth slide plate, and the double-track rear upper stage frame 722 is connected to the double-track rear lower stage frame 721 through the fourth pin shaft located at the center thereof, so that the double-track rear upper stage frame 722 can rotate around the fourth pin shaft by a certain angle (-15°~+15°), which meets the angle deflection requirements of the beam transport vehicle and the concrete beam piece when transporting or feeding beams, and ensures that the beam transport vehicle can pass through the curved section smoothly; at the same time, by arranging the seventh slide plate at the bottom of the double-track rear upper stage frame 722, the double-track rear upper stage frame 722 rotates and slides on the double-track rear lower stage frame 721 through the seventh slide plate, thereby reducing friction.

[0072] Furthermore, in some embodiments, the double-track rear lower stage frame 721 is further provided with a fourth rotation stopper 724 for limiting the deflection angle of the double-track rear upper stage frame 722. Fig. 20 As shown, four fourth rotation stops 724 are provided on the double-track rear lower stage frame 721, which are arranged at the front and rear sides of the double-track rear upper stage frame 722 respectively to limit the rotation angle of the double-track rear upper stage frame 722. The fourth rotation stops 724 are only used as a safety device. During the beam transportation process, the double-track rear upper stage frame 722 is not allowed to rotate too much, resulting in continuous force on the fourth rotation stops 724. A plate-type rubber seat is also fixed on the double-track rear upper stage frame 722, which is used to carry the concrete beam piece and has a buffering effect to protect the concrete beam piece.

[0073] See also Fig. 22 As shown, in one embodiment, the dedicated line rear beam trolley 73 includes: a dedicated line rear lower stage frame 731 and a dedicated line rear upper stage frame 732, the dedicated line rear upper stage frame 732 is rotatably mounted on the dedicated line rear lower stage frame 731, the dedicated line rear lower stage frame 731 is installed with a chain tensioning device 733, and the chain tensioning device 733 is provided with an adjustable roller circulating chain; a front guide wheel 734 and a rear guide wheel 735 and a driving device 736, the driving device 736 drives the adjustable roller circulating chain to move through the front guide wheel 734 and the rear guide wheel 735, so that the dedicated line rear lower stage frame 731 moves forward and backward.

[0074] In this embodiment, the dedicated line rear beam trolley 73 is a plate structure, the dedicated line rear upper stage frame 732 is slidably installed on the dedicated line rear lower stage frame 731 through the ninth slide plate, and the dedicated line rear upper stage frame 732 is rotatably installed on the dedicated line rear lower stage frame 731 through the fifth pin shaft, and the dedicated line rear lower stage frame 731 is slidably installed on the rear body 3 through the tenth slide plate; the dedicated line rear beam trolley 73 also includes a fifth sensor 737, and the fifth sensor 737 is installed between the dedicated line rear lower stage frame 731 and the dedicated line rear upper stage frame 732, and is used to monitor the deflection angle of the dedicated line rear upper stage frame 732. In this embodiment, the dedicated line rear lower stage frame 731 can slide forward and backward along the rear single-line track 32 through the tenth slide plate, and the dedicated line rear upper stage frame 732 is connected to the dedicated line rear lower stage frame 731 through the fifth pin shaft located at the center thereof, so that the dedicated line rear upper stage frame 732 can rotate around the fifth pin shaft by a certain angle (-15°~+15°), meeting the angle deflection requirements of the beam transport vehicle and the concrete beam piece when transporting or feeding beams, and ensuring that the beam transport vehicle can pass through the curved section smoothly.

[0075] Further, in some embodiments, the rear lower stage frame 731 of the special line is also provided with a fifth rotation stopper 738 for limiting the deflection angle of the rear upper stage frame 732 of the special line. Four fifth rotation stops 738 are provided on the rear lower stage frame 731 of the special line, which are arranged on the front and rear sides of the rear upper stage frame 732 of the special line respectively to limit the rotation angle of the rear upper stage frame 732 of the special line. The fifth rotation stopper 738 is only used as a safety device. During the beam transportation process, the rear upper stage frame 732 of the special line is not allowed to rotate too much, resulting in the fifth rotation stopper 738 being continuously stressed. A plate-type rubber seat is also fixed on the rear upper stage frame 732 of the special line, which is used to carry the concrete beam piece and has a buffering effect to protect the concrete beam piece. In this embodiment, the driving device 736 is driven by a hydraulic motor reducer through the front guide wheel 734 and the rear guide wheel 735 to drive the adjustable roller circulating chain to move, so that the rear lower stage frame 731 of the special line moves forward and backward. The dedicated rear lower carriage frame 731 is also provided with a third carriage limit seat 739 and a third oil cylinder latch 730 .

[0076] In the above embodiment, the front driver's cab 21 can automatically rotate 0 to 180° through the rotating cylinder at the rear end of the front driver's cab 21 bracket. When transporting beams, the two front driver's cabs 21 face directly in front of the line; when feeding beams, the two front driver's cabs 21 need to be rotated to the outside of the front car body 1 to make room for feeding beams. The rear driver's cab 22 is installed on the power system bracket of the rear car body 3 and can automatically rotate 0 to 180° through the rotating cylinder at the rear end of the rear driver's cab 22 bracket. When transporting beams, the rear driver's cab 22 can be rotated to the outside of the rear car body 3 toward the front of the line. Each driver's cab is a fully enclosed structure, using safety glass, with accessories such as wipers, electric horns, sound and light alarm lights, adjustable seats, armrests, and a tool box.

[0077] The four cabs have the same functions and are all equipped with linkage tables and human-machine interfaces. All equipment actions can be centrally controlled in the cab. The human-machine interface can intuitively display the current actions and parameters of the equipment. When a system failure occurs, an audible and visual alarm is issued, and the specific location of the failure can be intuitively checked. In the dual-line mode, only one front cab 21 on the left and one rear cab 22 on the right can be installed.

[0078] The single-track and double-track beam transport vehicle in this embodiment may also include a power system, a hydraulic system, an electrical system, etc. The power system is divided into a front vehicle power system 101 and a rear vehicle power system 102, both of which are hydraulic drive systems.

[0079] The rear vehicle power system 102 is divided into left and right rear power systems. The left and right rear power systems are arranged symmetrically. The diesel engine drives the hydraulic pump to drive the rear vehicle to travel, balance the suspension lifting, steering, and leg extension. At the same time, the diesel engine provides power for lighting and control. The main components include the engine assembly, the fuel tank 15, the mounting frame, etc. The entire rear power system is fixed to the rear end of the rear vehicle body 3. A single rear vehicle is equipped with two Cummins water-cooled diesel engines with a rated power of 264kW, which are installed in the engine mounting frame of the single-side vehicle body. There are a total of four engines on the left and right sides of the vehicle body. Each engine drives the hydraulic pump to run through the coupling, and supplies high-pressure and large-flow hydraulic oil to the actuator through the oil pipe installed on the vehicle body. The main technical parameters of the engine: model: QSL8.9-C360; rated power: 264kW; rated speed: 2100r / min; displacement: 8.9L; fuel consumption rate at rated power: 229g / kW.h; capacity of a single rear vehicle fuel tank 15: about 1900L.

[0080] The front vehicle power system 101 is divided into a left and right front power system. The left and right front power systems are exactly the same. The front vehicle power system 101 is driven by a diesel engine to drive the hydraulic pump to drive the front vehicle to travel, balance the suspension lifting, steering, and leg extension and retraction, and at the same time provide power for lighting and control. The main components include an engine, a coupling, a mounting frame, etc. The entire front power system is fixed to the rear end of the front vehicle body 1. A single front vehicle is equipped with a Cummins water-cooled diesel engine with a rated power of 194kW, which is installed in the engine mounting frame of a single vehicle body. There are two engines on the left and right sides of the vehicle body. Each engine drives the hydraulic pump to run through a coupling, and supplies high-pressure and large-flow hydraulic oil to the actuator through the oil pipe installed on the vehicle body. The main technical parameters of the engine: model: QSB6.7-C260; rated power: 194kW; rated speed: 2200r / min; displacement: 6.7L; fuel consumption rate at rated power: 236g / kW.h; single front vehicle fuel tank 15 capacity: about 600L.

[0081] The above-mentioned hydraulic system has the following execution systems: hydraulic travel system, hydraulic steering system, hydraulic balancing system, hydraulic braking system, hydraulic cooling and air conditioning system, hydraulic outrigger system, hydraulic trolley system, and hydraulic latch system.

[0082] The front vehicle hydraulic system consists of a 130cc / r closed pump, a 100cc / r load-sensitive pump, a 55cc / r gear pump, a 10cc / r gear pump; 4 hydraulic motors + 4 reducers; 12 steering cylinders 91, 20 balancing cylinders 85, 2 outrigger cylinders, 2 rack cylinders (only one of the vehicles has it), 4 conversion support cylinders (only one of the vehicles has it), 1 latch cylinder; a hydraulic winch, etc., plus a series of control valves.

[0083] The rear vehicle hydraulic system consists of two 215cc / r closed pumps, two 60cc / r load-sensitive pumps, two 55cc / r gear pumps, two 10cc / r gear pumps; 18 hydraulic motors + 18 reducers; 12 steering cylinders 91, 20 balancing cylinders 85, 6 outrigger cylinders (shared by two rear vehicle), 2 pannier cylinders (only one of the vehicles has it), 4 conversion support cylinders (only one of the vehicles has it), 1 latch cylinder; a hydraulic winch, etc., plus a series of control valves.

[0084] (1) Hydraulic travel system: The front vehicle travel system consists of a 130cc / r closed-type pump, 4 hydraulic motors + 4 reducers. The hydraulic pump is driven by a diesel engine. The maximum travel working pressure is 32MPa, and the system design overflow pressure is 35MPa. The rear vehicle travel system consists of two 215cc / r closed-type pumps, 18 hydraulic motors + 18 reducers. The hydraulic pump is driven by two diesel engines, each diesel engine drives a 215 closed-type pump. The maximum travel working pressure is 30MPa, and the system design overflow pressure is 35MPa.

[0085] (2) Hydraulic steering system: The front and rear vehicles have their own steering systems. The front vehicle is driven by a diesel engine and a 100cc / r load-sensitive pump; the rear vehicle is driven by two diesel engines and two 60cc / r load-sensitive pumps. The steering system is driven by steering cylinders, each cylinder drives two sets of wheels 8, and the wheels 8 are connected by steering connecting rods 92. The front and rear vehicles are each composed of four sets of multi-way valves and 12 90 / 63-220 cylinders.

[0086] (3) Hydraulic balancing system: Balancing is achieved by connecting hydraulic cylinders in parallel. Both the front and rear vehicles are three-point balanced. Three-point balancing can make the tires 86 evenly stressed. Three-point balancing of the front vehicle: The front left 5 wheel groups 8, the front right 5 wheel groups 8, and the rear 5 axis lines (10 wheel groups 8) each form a balancing point, forming a three-point balancing mode for the front vehicle. Three-point balancing of the rear vehicle: The rear left 5 wheel groups 8, the rear right 5 wheel groups 8, and the front 5 axis lines (10 wheel groups 8) each form a balancing point, forming a three-point balancing mode for the rear vehicle. Balancing principle: The cylinders at the same balancing point are connected in parallel with pipes through a rodless cavity to achieve the same pressure between the cylinders, thereby ensuring that each wheel group 8 is subjected to the same force.

[0087] The hydraulic pump for the cylinder action of the front vehicle balancing system adopts a 100cc / r load-sensitive pump, and one of the four multi-way valve groups is used for control; the hydraulic pump for the cylinder action of the rear vehicle balancing system adopts two 60cc / r load-sensitive pumps, and two of the multi-way valve groups in the power room and one of the multi-way valve groups in the front of the vehicle body are used for control, and a balance valve is used to lock oil at each point. Each balancing cylinder 85 is equipped with a double-line explosion-proof valve to prevent the balancing cylinder 85 of the wheel group 8 from losing pressure after a single balancing pipeline ruptures. After the pipeline ruptures, the balancing cylinder 85 of the corresponding wheel group 8 can be used for a short time. Users should check regularly. If there is any pipeline damage, it must be replaced immediately and it is not allowed to continue to operate with the problem. Each balancing cylinder 85 has its own ball valve. When an individual wheel group 8 fails, the ball valve can be switched on and off to adjust the balancing height, so that the failed wheel group 8 can be lifted to achieve the purpose of continuing operation. If the faulty wheel set 8 is the driving wheel set 8, it is necessary to close the ball valve of the motor running related pipeline at the same time to avoid motor overspeed damage. However, when there are many faulty wheel sets 8, it is necessary to stop the vehicle for maintenance.

[0088] (4) Hydraulic brake system: The single and double lines share the wheel reducer with parking brake, which is opened hydraulically. The front vehicle brake is opened by a 10cc / r gear pump, and the rear vehicle brake is opened by two 10cc / r gear pumps. The pressure is adjusted by the overflow valve, the electromagnetic reversing valve is controlled, and the accumulator is used to maintain the pressure. The brake opening pressure of the reducer is 18 bar, and the pressure holding pressure range is 25 bar to 60 bar, ensuring that the static brake can be opened frequently and effectively.

[0089] (5) Hydraulic cooling and air conditioning system: In order to prevent the hydraulic oil temperature of the hydraulic system from being too high, a cooling system is added to the single-track and double-track shared beam transport vehicle. The front vehicle cooling system consists of a 10CC / r gear pump and the rear vehicle cooling system consists of two 10CC / r gear pumps. The pressure is adjusted by the overflow valve and the electromagnetic reversing valve is controlled to drive the radiator fan motor. The cooling oil of the front vehicle is drawn from the oil tank by a 55cc / r gear pump and then merged. After passing through the radiator, it returns to the oil tank to achieve heat dissipation; the cooling oil of the rear vehicle is drawn from the oil tank by two 55cc / r gear pumps and then merged. After passing through the radiator, it returns to the oil tank to achieve heat dissipation. The single-track and double-track shared beam transport vehicle is equipped with hydraulic air conditioners in the driver's cabs of the front and rear vehicles. The hydraulic oil of the air conditioner is supplied from one of the multi-way valve groups near the driver's cab of each vehicle body.

[0090] (6) Hydraulic outrigger system: In order to cooperate with the bridge erection machine to meet the working conditions and facilitate its own debugging and maintenance, the single- and double-track shared beam transport vehicle is equipped with two hydraulic outriggers on the front vehicle and six hydraulic outriggers on the rear vehicle (only one on the rear vehicle), which are located at the front of the front vehicle body 1 and the front, middle and rear of the rear vehicle body 3. The hydraulic pump for the cylinder action of the outrigger system of the front vehicle adopts a 100cc / r load-sensitive pump, which is controlled by one of the two sets of multi-way valve groups; the hydraulic pump for the cylinder action of the outrigger system of the rear vehicle adopts two 60cc / r load-sensitive pumps, which are controlled by two of the six sets of multi-way valve groups (one of which is used to control the extension and retraction of the outrigger swing cylinder). It can be operated individually or as a whole. Each outrigger adopts a balance valve to lock the oil. Each outrigger cylinder is equipped with a load-bearing chamber pressure detection, which can convert and display the load-bearing capacity in real time.

[0091] (7) Hydraulic trolley system: The hydraulic winch located in the front car is hydraulically driven for no-load reset. A 100cc / r load-sensitive pump and one of the multiple valve groups drive a hydraulic winch. The hydraulic winch has a clutch with a maximum opening pressure of 50 bar. When the front beam-carrying trolley 6 feeds the beam synchronously, the winch brake must be opened. The beam-carrying trolley located in the rear car (only one rear car has it) is hydraulically driven and uses two 60cc / r load-sensitive pumps and one of the multiple valve groups to drive the reciprocating operation. The winch has its own brake and balance valve. The brake opening pressure is not less than 35 bar. When the winch is running, the brake automatically opens. When the winch stops running, the brake automatically applies.

[0092] (8) Hydraulic latch system: The front and rear vehicles each have a latch system. The front vehicle is controlled by a 100cc / r load-sensitive pump, and the rear vehicle is controlled by two 60cc / r load-sensitive pumps. They are controlled by taking one link from the multi-way valve group of each vehicle body. They can act individually or as a whole. The speed can be adjusted by the multi-way valve and locked by the balance valve.

[0093] (9) Hydraulic pipelines and others: The hydraulic components selected for the system are all imported or well-known domestic brands, with stable quality, safety, reliability and strong replaceability. The layout of the hydraulic pump station and valve group is reasonable, and the disassembly and assembly are simple and convenient; pressure gauges are configured at the key monitoring parts of the hydraulic system, so that the relevant system pressure can be easily viewed for easy viewing; the solenoid valve uses an electrical plug with a light to facilitate maintenance in case of failure. The connection between some components uses hydraulic seamless steel pipes or hydraulic hoses, among which the hydraulic hoses use winding pipes and other protective measures at necessary locations to avoid damage caused by the influence of structures, equipment or other moving parts; the pipelines are cleaned with a special cleaning machine before installation to ensure the cleanliness of the hydraulic system pipelines; all hydraulic pipelines are fixed to the corresponding structure of the beam transporter by pipe clamps, which are firm and reliable. The pipe joints use 24° cone sealing ferrule joints, which are firm, reliable in sealing, easy to disassemble and assemble, and the joints are coated with good anti-rust effect.

[0094] A cleaning port is set on the side of the oil tank to facilitate cleaning when the system needs to change oil; a level and temperature gauge is set at the appropriate part of the oil tank to facilitate observation of the oil level and oil temperature of the oil tank; the oil tank is equipped with an oil suction filter and a pressure oil filter to ensure the cleanliness of the system oil. An oil drain port is set at the bottom of the oil tank to drain the hydraulic oil and impurities when the system changes the hydraulic oil. The entire single- and double-track shared beam transport vehicle is equipped with hydraulic brakes and pneumatic brakes, and has service brakes, parking brakes and emergency service brakes.

[0095] (1) Hydraulic service brake: The braking process of driving is mainly achieved by controlling the driving hydraulic system. The service brake principle of the hydrostatic closed system itself: When deceleration is required, the pump displacement decreases when the travel handle is pulled back. At this time, the motor displacement remains unchanged, and the functions of the pump and motor are reversed. The motor rotates under the action of the reverse drag force, converting kinetic energy into hydraulic energy, forming a closed oil in the pipeline, and the high and low pressures of the main oil circuit are interchanged. The reverse pressure difference forms a braking force, which slows down the speed of the vehicle. When the travel handle is pulled back to the middle position, the pump displacement output is 0, and under the action of hydraulic damping, the service brake is realized until the vehicle stops.

[0096] (2) Parking brake: Parking brake includes hydraulic and pneumatic dual parking brakes. Hydraulic parking brake is realized by the static brake control knob on the operation panel. Braking principle: The diaphragm brake installed at the input end of the wheel-side reducer is used. The braking mode is zero-pressure braking, that is, when there is no pressure in the hydraulic brake system, the brake chamber uses the pressure of the spring to compact the laminations to achieve braking. When the pressure of the hydraulic brake system reaches 18 bar, the brake chamber oil pressure overcomes the spring pressure to separate the laminations and release the brake.

[0097] The pneumatic parking brake is realized by the pneumatic brake control knob on the operation panel. Braking principle: The braking mode is zero-pressure braking. When the pneumatic reversing valve loses power, the brake hub is in the braking state; when the pneumatic reversing valve is energized, compressed air is directly supplied from the air tank to the diaphragm brake air chamber through the relay valve to release the pneumatic parking brake.

[0098] (3) Emergency service braking: In an emergency, the operator first pulls the travel handle back to the middle position, the drive system stops supplying oil, and the hydraulic damping slows down the system; the operator then operates the travel handle in the reverse direction to control the pneumatic proportional pressure reducing valve, so that compressed air is directly supplied from the air tank to the diaphragm brake air chamber through the relay valve, the brake hub brake takes effect, the system quickly decelerates and achieves emergency service braking.

[0099] Electrical system: (1) The core part of the electrical system of the beam transporter adopts the EPEC controller for controlling the walking equipment and moving machinery, which makes the beam transporter flexible to operate, fast turning speed (turning 10° only takes 2-3 seconds), stable and reliable system, etc. It adopts advanced current type absolute value encoder to accurately measure the steering angle of each set of tires. Surveillance cameras are installed around the beam transporter to observe the road surface and the side conditions in real time during driving, solving the problem of blind spots in the driving process of the beam transporter driver due to the large vehicle body.

[0100] This system includes the following safety protection systems:

[0101] a) Overload protection; b) Motor and oil cylinder undervoltage protection; c) Power supply undervoltage protection; d) Wheel set 8 steering abnormality protection; e) Limit protection; f) Full vehicle running video monitoring.

[0102] (2) Voltage: The control system and lighting are powered by 24V DC. The driver's cab is equipped with a hydraulic air conditioner. The cables are marked with line numbers and protected by hoses.

[0103] (3) The layout of the power lines of the whole set of equipment is reasonable, safe and reliable. The electrical cabinet is used as a unit, the cables are marked with line numbers and connected with terminal blocks.

[0104] (4) The electrical control components are mainly manufactured by Schneider of France and Chint of China, with stable performance and reliable quality. The control system is equipped with a programmable controller.

[0105] (5) The travel and steering of the beam transport vehicle are controlled by a handle with stepless adjustment. The travel speed of the whole machine is displayed on the touch screen. Power start and stop buttons are provided in the front and rear cabs; an emergency stop button is provided in the front and rear cabs 22, the front left front, right front, left rear, and right rear of the front vehicle, and the rear left front, right front, left rear, and right rear of the rear vehicle. In an emergency, all operations of the beam transport vehicle can be stopped by the emergency stop button.

[0106] (6) The beam transport vehicle is equipped with a fault alarm device: The beam transport vehicle is equipped with an anti-collision system. A laser rangefinder is installed at the front end of the beam transport vehicle to prevent collision with obstacles in front. The front and rear driver's cabs 22 are equipped with snail horns and sound and light alarm devices. The beam-carrying trolley is equipped with a limit device at the beginning and end of the travel to ensure safe operation.

[0107] (7) Electrical system structure: a) Main control part: A workstation with EPEC controller as the core. It works as an independent system when transporting beams. When feeding beams to the bridge erection machine, it is operated uniformly by the rear driver's cab 22 of the beam transport vehicle. b) Operation part: When the beam transport vehicle is driving, the running and steering are controlled by handles. The running adopts stepless speed regulation. The direction handle and the angle detection form a closed-loop control system to ensure the control accuracy. The running motor adopts stepless speed regulation to ensure the stability of the speed. The running speed of the whole machine is also within the detection range and can be displayed on the touch screen. The rear beam transport vehicle is driven by a hydraulic motor to carry the trolley. The reducer end is equipped with an encoder. The hydraulic motor is PID controlled according to the trolley running speed fed back by the encoder. When the beam transport vehicle is controlled by a single machine, the winch action is controlled by the driver's cab of the beam transport vehicle; when feeding beams synchronously, the rear vehicle pushes the beam piece to drive the front vehicle trolley to move forward slowly.

[0108] (8) Human-machine interaction interface: The beam transport vehicle operation panel and human-machine interaction interface adopt a user-friendly design, adding many intelligent elements. The operation logic is designed with the most basic protection for most misoperations. The operation interface uses a visual layout to directly display the internal logic of the entire set of equipment and all vehicle information. Trained drivers can operate all functions safely, stably, easily and comfortably, and can clearly see the vehicle information they need to see.

[0109] The single-track and double-track shared beam transport vehicle provided in this embodiment is suitable for the transportation of 20m, 24m, 32m, 40m standard and 20m-40m non-standard double-track full-hole concrete prefabricated box beams (double-track weight 1000t and below; single-track weight 500t and below) on railway passenger dedicated lines (bridge-tunnel connected) with a speed of 250-350km / h. The single-track and double-track shared beam transport vehicle can be equipped with a JQD1000 bridge erecting machine, can complete the transportation and erection of full-hole box beams, and can carry double-track box beams or bridge erecting machines through R6650 tunnels, and carry single-track box beams through R3920 tunnels, realizing short-distance transportation between bridges and tunnels.

[0110] The entire single- and double-track shared beam transport vehicle consists of a front vehicle and a rear vehicle. The front and rear wheel groups 8 each have 10 axles. The rear vehicle is the active vehicle, with 4 full-bridge drive shafts and 1 half-bridge drive shaft. The front vehicle is the driven vehicle, with 2 half-bridge drive shafts. When transporting heavy-loaded beams and feeding beams, the rear vehicle provides the main driving force. When returning empty, the front and rear vehicles drive each other.

[0111] The whole vehicle structure adopts modular design and production, which is easy to disassemble and assemble, and has high transfer efficiency. Through different combinations and splits of four single vehicles, the transportation of single and double-track box girders can be realized. The wheel group 8 of the front vehicle and the rear vehicle is balanced and steered independently. Both the front vehicle and the rear vehicle have a driver's cab, have a two-way driving function, and can independently control the steering of the vehicle.

[0112] In the conventional single- and double-track mode, the front beam-carrying trolley 6 is a passive trolley, and the rear beam-carrying trolley 7 is a fixed trolley. In the Zhuzhao Line special mode, the front beam-carrying trolley 6 is a passive trolley, and the rear beam-carrying trolley 7 is a circulating chain driven trolley, which can slide along the track on the rear car body 3. By adjusting the distance between the front and rear cars and the installation position of the trolley, it can carry box girders of any span of 20 to 40 meters (double-track weight 1000t and below; single-track weight 500t and below). This type of vehicle is a tunnel-passing type, which can carry box girders and bridge-building machines through tunnels (the size limits of tunnels and box girders do not exceed the design requirements of this equipment).

[0113] Compared with the traditional method of having one beam transport vehicle for each single track and double track, the single-track and double-track shared beam transport vehicle in this embodiment can save more than half of the cost and improve the conversion time efficiency of the single-track and double-track beam transport vehicles by more than 90% during the construction process. The single-track and double-track beam transport vehicles can be quickly switched through the middle connecting crossbeam 5, and the switching time is shortened from the traditional 2 days required to replace the entire beam transport vehicle to less than 1 hour, which greatly improves the construction efficiency; the single-track and double-track shared components reduce the weight of the whole machine, greatly save the production cost, and facilitate installation and transportation; at the same time, it improves the work efficiency of personnel, saves time and construction period.

[0114] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A single-track and double-track shared beam transport vehicle, characterized in that: It includes: Two front car bodies (1), the two front car bodies (1) are arranged in parallel and spaced apart, and a front driver's cab (21) is provided at the front end of each front car body (1); Two rear car bodies (3), the two rear car bodies (3) are located behind the two front car bodies (1), and the two rear car bodies (3) and the two front car bodies (1) are detachably connected via a connecting crossbeam (5), and a rear driver's cab (22) is provided at the rear end of each rear car body (3); The front vehicle body (1) is equipped with a front beam trolley (6), and the rear vehicle body (3) is equipped with a rear beam trolley (7).

2. The single-track and double-track beam transport vehicle according to claim 1, characterized in that: The front vehicle body (1) comprises a front main beam (11), the front driver's cab (21) is mounted on the front end of the front main beam (11), the front main beam (11) is provided with two front single-track rails (12) and a front double-track rail (13) located between the two front single-track rails (12), The front beam carriage (6) is slidably mounted on the front single-track rail (12) or the front double-track rail (13).

3. The single-track and double-track beam transport vehicle as claimed in claim 2, characterized in that: The front main beam (11) is also provided with a bicycle lifting eye beam (4), and the front end of the front main beam (11) is provided with a front oil cylinder support leg (14), and the rear end of the front main beam (11) is provided with a fuel tank (15).

4. The single-track and double-track beam transport vehicle according to claim 1, characterized in that: The rear vehicle body (3) comprises a rear main beam (31), the rear driver's cab (22) is mounted on the rear end of the rear main beam (31), and the rear main beam (31) is provided with two rear single-track rails (32) and a rear double-track rail (33) located between the two rear single-track rails (32); The rear beam carriage (7) is slidably mounted on the rear single-track rail (32) or the rear double-track rail (33).

5. The single-track and double-track beam transport vehicle as claimed in claim 4, characterized in that: The rear main beam (31) is also provided with a rear leg support seat (34) and a pack frame mounting position, the front, middle and / or rear of the rear main beam (31) are equipped with rear cylinder legs (35), and the rear main beam (31) is also provided with a double-track trolley connecting plate (36).

6. The single-track and double-track beam transport vehicle as claimed in claim 4, characterized in that: The rear main beam (31) comprises a main support beam (311) and wheel set support beams (312) fixedly arranged on opposite sides of the main support beam (311), so that the rear main beam (31) is T-shaped, and the wheel set support beam (312) on each side is provided with a wheel set installation interface (313).

7. The single-track and double-track shared beam transport vehicle according to claim 1, characterized in that: The front beam trolley (6) comprises a single-track front beam trolley (61) and a double-track front beam trolley (62), and one of the single-track front beam trolley (61) and the double-track front beam trolley (62) is installed on the front vehicle body (1); the rear beam trolley (7) comprises a single-track rear beam trolley (71), a double-track rear beam trolley (72) and a dedicated rear beam trolley (73), and one of the single-track rear beam trolley (71), the double-track rear beam trolley (72) and the dedicated rear beam trolley (73) is installed on the rear vehicle body (3).

8. The single-track and double-track beam transport vehicle according to claim 7, characterized in that: The single-track front beam carriage (61) comprises: A single-line front lower stage frame (611) and a single-line front upper stage frame (612), wherein the single-line front upper stage frame (612) is slidably mounted on the single-line front lower stage frame (611) via a first slide plate, and the single-line front upper stage frame (612) is rotationally mounted on the single-line front lower stage frame (611) via a first pin shaft, and the single-line front lower stage frame (611) is slidably mounted on the front vehicle body (1) via a second slide plate; A first sensor (613), wherein the first sensor (613) is installed between the single-line front lower stage frame (611) and the single-line front upper stage frame (612), and is used to monitor the deflection angle of the single-line front upper stage frame (612).

9. The single-track and double-track beam transport vehicle as claimed in claim 8, characterized in that: The single-line front lower stage frame (611) is also provided with a first rotation stopper (614) for limiting the deflection angle of the single-line front upper stage frame (612); The single-line front lower carriage frame (611) is also fixedly provided with a first carriage limiting seat (615) and a first oil cylinder latch (616); the single-line front lower carriage frame (611) is fixedly provided on the front carriage body (1) via the first carriage limiting seat (615) and the first oil cylinder latch (616).

10. The single-track and double-track beam transport vehicle according to claim 7, characterized in that: The dedicated rear beam trolley (73) comprises: A dedicated line rear lower stage frame (731) and a dedicated line rear upper stage frame (732), wherein the dedicated line rear upper stage frame (732) is rotatably mounted on the dedicated line rear lower stage frame (731), and the dedicated line rear lower stage frame (731) is installed with a chain tensioning device (733), and an adjustable roller circulating chain is arranged on the chain tensioning device (733); A front guide wheel (734), a rear guide wheel (735) and a driving device (736), wherein the driving device (736) drives the adjustable roller circulating chain to move through the front guide wheel (734) and the rear guide wheel (735), so that the dedicated line rear lower stage frame (731) moves forward and backward.

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