Module car assembling process

Abstract

The invention provides an application of a module vehicle in water transportation engineering, and particularly relates to an assembled module vehicle used for heavy goods transportation. In the invention, when a subsequent module vehicle is assembled, through the organic combination of longitudinal rigid parallel operation between the power module units and the vehicle group and transverse soft parallel operation between two module transportation workshops, the height difference of the module vehicle in an uneven field is adjusted, and the phenomena of separation of components from the vehicle and deviation of two parallel operation of the module vehicle are eliminated; a component stress structure is located on the central line of the axis of the module vehicle, it is guaranteed that all axis units of the module vehicle can be stressed in a balanced mode in the transportation process of the super-large component, and the transportation stability is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of modular vehicles in cargo transportation, and in particular to a modular vehicle assembly process. Background Art

[0002] In the prior art, it is difficult to transport heavy goods, especially one-piece prefabricated goods weighing several thousand tons. In particular, during transportation, the goods are difficult to be stably placed on a transport vehicle, etc., resulting in slow construction progress. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a modular vehicle assembly process to solve the above technical problems.

[0004] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0005] The application of modular vehicles in water transport projects is specifically to use assembled modular vehicles for heavy cargo transportation.

[0006] Furthermore, it also includes the assembly of the modular vehicle, which specifically includes the following steps: assembling the power module unit of the modular vehicle, determining the number of vehicle spools, determining the number of driving suspensions during slope driving, and determining the relationship curve between load and lifting pressure;

[0007] In the assembly of the power module units of the module vehicle, each power module unit is used in combination with one or more module unit vehicles;

[0008] The power module unit and the module unit vehicle are organically connected by longitudinal rigid connection, and adjacent module unit vehicles are organically connected by transverse soft connection.

[0009] Furthermore, it also includes determining the number of power module units and module unit vehicle groups, which is specifically determined based on the total weight and size of the heavy cargo.

[0010] Furthermore, the longitudinal rigid military vehicle includes a parallel vehicle connection and a hydraulic pin operation, and the parallel vehicle connection includes at least a mechanical parallel vehicle, a hydraulic parallel vehicle and an electrical connection.

[0011] Furthermore, the lateral soft paralleling between the modular unit vehicles includes rigid paralleling and soft paralleling, the rigid paralleling includes at least mechanical paralleling and electrical paralleling, and the soft paralleling includes at least electrical paralleling.

[0012] Furthermore, the heavy cargo transportation includes ramp transportation, and also includes cargo posture change analysis before ramp transportation to determine whether the modular vehicle can carry the heavy cargo and pass the ramp.

[0013] Furthermore, the analysis of cargo posture changes before ramp transportation is specifically performed through analysis of changes in the angle between the plane of the modular vehicle and the ground in the transportation path, and the compensatory tilt of the hydraulic suspension in the longitudinal rigid vehicle connection.

[0014] Furthermore, during the heavy cargo transportation, the tipping angle of the modular vehicle in the transportation path is 6°-10°.

[0015] Furthermore, the heavy cargo is a barrel-type basic structure, the mass of the barrel-type basic structure is not less than 6000t, the barrel-type basic structure includes at least two layers, and the length is not less than 40m.

[0016] Furthermore, an insertion space of no less than 1.2 m is reserved at the bottom of the barrel-type basic structure, and the module vehicle enters the insertion space and lifts the barrel-type basic structure for transportation.

[0017] The present invention has the following beneficial effects:

[0018] In the present invention, the modular vehicle is used in water transport engineering, so that the transportation in the water transport engineering opens up a new mode of transportation, and the modular vehicle can be used for transporting large-volume and heavy-weight goods, which greatly improves the efficiency of water transport.

[0019] Through analysis and calculation, the present invention finds that the positive bending moment of all train sets does not exceed the maximum allowable positive bending moment of the frame, 7700kNm, and the maximum negative bending moment of all train sets meets the requirements and does not exceed the maximum allowable negative bending moment of the frame, -6200kNm. The transportation plan meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of the barrel-type foundation structure provided by the present invention;

[0021] Figure 2 A top view of the lower structure provided by the present invention;

[0022] Figure 3 A posture simulation diagram of the module vehicle provided by the present invention when passing through a slope during transportation;

[0023] Figure 4 The present invention provides a modular vehicle for changing the extension and contraction amount of each axle suspension of the modular vehicle during the climbing process;

[0024] Figure 5 This is a schematic diagram of the structure of the support frame in the module vehicle provided by the present invention;

[0025] In the figure:

[0026] 100. Barrel-type foundation structure; 110. Superstructure; 120. Substructure; 200. Support frame. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0028] See attached Figure 1-5 As shown, in the present invention, the module vehicle is used in water transport engineering, specifically in a local confidential project, which is specifically described as follows:

[0029] First, introduction to the project and transported goods.

[0030] 1. Description of goods.

[0031] The cargo in this embodiment is specifically a barrel-type foundation structure 100, which consists of an upper structure 110 and a lower structure 120. The upper structure 110 is a cube, and the lower structure 120 is an ellipsoid. The center line of the upper structure is set away from the center line of the lower structure, so that the entire barrel-type foundation structure 100 forms an eccentric structure; the maximum total weight of the barrel-type foundation structure 100 is 6200 tons, the lower cross-section is 40m×20m, and the center of gravity height is 12.5m. In the entire project, the total number of structural parts required is about 650.

[0032] In this embodiment, the barrel-type foundation structure is a prefabricated component, and steel bars and the like are arranged inside it.

[0033] 2. Project description.

[0034] The land layout of the base mainly includes the production and storage area of ​​barrel-type foundation structure 100, the mixing station production area and the office area, with a total land area of ​​about 100,800 m2 and a site elevation of +5.5m. The ideal elevation of the site is +4.0m, but because the foundation is a rock foundation, the cost of excavation is very high, and the ground is only allowed to be dug to +5.5m, so the land elevation is determined to be +5.5m. The mixing station production area is arranged on the southwest side of the land, mainly arranging 1 mixing station, 1 sand and gravel warehouse, 1 cement mineral powder transfer warehouse, 1 substation, 1 sewage treatment station, etc.; the barrel-type foundation structure production site and storage site are arranged in the northern area, with a total of 2 production lines from east to west; a steel bar processing plant and a cover plate processing area are arranged on the sea side of the production line; the office area is located on the southeast side of the base, including a comprehensive building.

[0035] In this embodiment, a modular vehicle constituted by the modular transport vehicle of the present invention is used to shift the prefabricated sections of the barrel-type foundation structure 100. During the entire shifting process, the operation is required to be safe and stable, and the lifting and unloading tasks during the shifting can be completed independently without the assistance of any other lifting and transporting equipment.

[0036] The site of use during transportation: The site of use of the modular vehicle is a cement road surface with a basically flat surface and paved tracks on the road surface.

[0037] Road slope during transportation: The transportation distance is about 400m, of which ramp 1 is 65m long and has a height difference of 0.85m; ramp 2 is 32m long and has a height difference of 0.65m.

[0038] In this embodiment, the module vehicle can adjust the height, generally at a height of 1m, it can be adjusted by 50cm. After the barrel-type foundation structure 100 is prefabricated, a net height of nearly 1.5m is left at the bottom during prefabrication, and the module vehicle can enter the bottom space of the barrel-type foundation, then lift the barrel-type foundation and then transport it out.

[0039] Part 2: Overall transportation plan.

[0040] In this embodiment, for 6200t of cargo (i.e., the barrel-type foundation structure 100), a 2.43m modular car is used for transportation, with a total of 176 axles and 5 power module units (PPUs). The composition of each vehicle group is shown in Table 1. Five single vehicle groups are used for transportation, and all vehicle groups are divided into four large groups. At this time, the power module units are softly connected horizontally through hydraulic pipes to provide power. The five vehicle groups are softly connected in four groups and divided into four power groups. The five vehicle groups are supported by four points as a whole, and the lifting pressure of the vehicle groups in the same group is equal. Specifically, the two vehicle groups on both sides are shorter, and the three vehicle groups in the middle are longer.

[0041] Table 1 Details of the splicing units of each vehicle group

[0042]

[0043] According to the above calculation and technical requirements, the center of gravity of the cargo in the X direction (i.e., the width direction) is calculated by coinciding with the geometric center of the cargo. The projection point of the center of gravity of the cargo on the ground is used as the coordinate origin to establish the coordinate system of the distribution vehicle. The coordinates of the center of mass of each vehicle group relative to the coordinate system of the distribution vehicle are shown in Table 2 below.

[0044] Table 2 Calculation table of loading center of mass of each support group

[0045]

[0046] Table 3 Transportation plan layout parameters

[0047]

[0048]

[0049] The overall technical parameters of the transportation plan are shown in the table.

[0050] Table 4 Overall technical parameters of the transportation plan

[0051] project parameter Total number of axes 176 Number of PPUs 5 Number of six-axis modular unit vehicles 18 Four-axis modular unit vehicle quantity 17 Rated load capacity(t) 7621 Axis load (t) 48 Climbing grade (%) 5 No-load speed (km / h) ≥2 Platform width(mm) 2430 Wheelbase(mm) 1400 Driving median height (mm) 1500 Lifting stroke (mm) 700(±350) Engine power (kW) 390 Traction force(kN) 6480

[0052] Part III: Determination of stability.

[0053] 3.1 Calculation of rollover stability

[0054] The maximum center of mass height of the cargo is about 12.54m. According to calculation, the minimum distance from the support group to the loading center of mass (coordinate center) is 3.85m, and the distance from the upper surface of the vehicle to the tire when driving in the heavy load medium position is 1.1m. Through the drawing method, the tipping angle is 6°, which is less than 10° (industry experience value), meeting the tipping stability requirements.

[0055] 3.2 Ramp passability verification

[0056] 3.2.1 Analysis of cargo posture change mechanism

[0057] When a modular vehicle is traveling on a ramp, it is usually composed of multiple modular vehicles connected by vehicle attachments. The overall transportation process mechanism can be explained by a standard six-axis modular vehicle. Taking the 2.43m series modular vehicle as an example, since the cargo and the modular vehicle are an integrated structure, the posture of the modular vehicle represents the posture of the cargo, and the angle θ between the plane on the modular vehicle and the horizontal ground is used to define the posture of the cargo.

[0058] In actual use, the module vehicle is in a horizontal state before going uphill, and the angle between the plane on the module vehicle and the ground is 0°; when half of the axis is on the slope and half of the axis is on the horizontal section, the angle between the plane on the module vehicle and the ground is recorded as θ2; when all suspensions are on the ramp, the angle between the plane on the module vehicle and the ground is recorded as θ3; when half of the axis is on the slope and half of the axis is on the horizontal section, the angle between the plane on the module vehicle and the ground is recorded as θ4; when the unit vehicle is in a horizontal state after going uphill, the angle between the plane on the module vehicle and the ground is 0°.

[0059] The vehicle groups are connected in parallel with longitudinal rigidity, the hydraulic suspensions are divided into groups, the oil in the same group is connected, the suspension is compensated within its travel range (±350mm), the frame tilts due to the adaptive compensation of the suspension on the slope, and the tilt will gradually increase during the ups and downslope process. When all the front and rear suspension groups of the modular vehicle are on the slope respectively, the frame tilt is the largest, and then the frame tilt will gradually decrease.

[0060] 3.2.2 Theoretical calculation.

[0061] In this embodiment, through the analysis of the posture change mechanism, when the modular vehicle is driving on a slope, its posture change can be simplified using a mathematical model. During the transportation process, the road slope is mostly a standard two-stage zigzag slope, so the mathematical model is calculated using the standard two-stage zigzag slope as an example.

[0062] According to the above analysis of the posture change mechanism, a mathematical model is established. The modular car of the N1+N2 axis is ready to drive a ramp according to the above requirements. The suspension of the modular car of the N1+N2 axis is grouped, the front group is the N1 axis, and the rear group is the N2 axis. The front and rear overhangs of the modular car are both 0.7m, and the wheelbase is 1.4m. The projection point of the front end of the modular car group on the ground and the coincidence point of the starting point of the ramp are taken as the origin of the coordinates. The travel direction is the x-axis and the suspension lifting direction is the y-axis to establish a coordinate system. The above mathematical assumption model does not consider the factor of the lateral slope on the road, nor does it consider the forward and backward swing of the wheels in the travel direction caused by the movement of the mechanism itself during the lifting process of the modular car suspension mechanism.

[0063] Assuming that the horizontal length of the entire slope is L and the slope height is H, when the modular vehicle travels forward a distance x1, the height hi of the i-th axis suspension in the vertical direction has the following relationship.

[0064]

[0065] in:

[0066] Li represents the distance between the i-th axis suspension and the front end face of the module vehicle.

[0067] According to the above calculation method, the height of each axle suspension after passing the ramp is calculated, and then the average height of the front N1 axle suspension and the rear N2 axle suspension is calculated, which are recorded as hfront and hback respectively. When the module vehicle travels forward by a distance of x1, the inclination angle of the plane on the module vehicle relative to the horizontal ground is θ, then

[0068]

[0069] in:

[0070] H represents the average distance between the rear N2 axis suspension and the front end of the module vehicle;

[0071] Hfront represents the average distance between the rear N1 axis suspension and the front end face of the module vehicle.

[0072] According to the above calculation method, the inclination angle of the modular vehicle relative to the ground at each moment can be calculated based on the step amount of the modular vehicle in the driving direction. By refining the step amount, the curve of the change of the inclination angle of the modular vehicle in the driving direction with the horizontal driving distance can be calculated. This curve is the posture angle of the goods on the ramp during the modular vehicle climbing process.

[0073] In this embodiment, there are two continuous ramps in the user's transportation route. Ramp 1 is 32 meters long and has a height difference of 0.65 meters; ramp 2 is 65 meters long and has a height difference of 0.85 meters. For the ramps, the uphill calculation process of a 36-axle modular unit vehicle is simulated, and the posture of the cargo and the compensation of the suspension are calculated when the vehicle passes through the two ramps.

[0074] See attached Figure 3 Yes, the module vehicle in this embodiment is a posture simulation diagram when passing through a slope during the transportation of the barrel-type basic structure 100. Figure 3 It can be seen that when the modular vehicle is climbing the slope, the figure shows the change in the angle of the cargo relative to the horizontal plane, where the horizontal axis is the horizontal distance traveled by the modular vehicle during transportation, and the vertical axis is the attitude angle of the cargo, with a maximum of 1.1°, which is within the safe transportation range.

[0075] like Figure 4 As shown in the figure, the expansion and contraction of the suspension of each axle of the 36-axis transport vehicle changes during the module vehicle climbing process, where the horizontal axis is the horizontal distance traveled by the module vehicle during transportation, and the vertical axis is the expansion and contraction of the suspension cylinder, where a negative value indicates that the cylinder is shortened, and a positive value indicates that the cylinder is extended, where the maximum shortening of the suspension is 170mm, and the maximum extension is 130mm, both of which are less than the maximum compensation range of the suspension. In this embodiment, when the module vehicle goes uphill or downhill, the module vehicle needs to compensate for the influence of the slope through the expansion and contraction of the suspension to reduce the inclination of the component.

[0076] Through calculation, if the cargo is initially in a horizontal state and passes through the ramp longitudinally, the longitudinal horizontal inclination of the cargo is about 1.1°. The maximum compensation of the suspension is 170mm, which is much smaller than the ±350mm suspension compensation capacity. Therefore, the train can meet the requirements of carrying cargo through the ramp.

[0077] Part 4: merging the cars.

[0078] In this embodiment, the power module unit can be used in combination with one or more module unit vehicles;

[0079] If the cargo weight is less than the minimum load required for the corresponding number of axles, some brake axles or trailing axles must be lifted off the ground to ensure that the load-bearing mass of each axle is not less than 12t;

[0080] How to solve the problem of two vehicles running off course when running side by side: Equip the minimum number of axles according to the weight and shape of the cargo to increase the axle load capacity.

[0081] A simple operation method of soft-jointing two vehicles to increase the axle load, and the drive suspension can be raised while ensuring the climbing ability.

[0082] If the load on each axle is less than 12t, the two vehicles must be rigidly connected together through fixed fixtures, which can completely eliminate the deviation of the two vehicles.

[0083] In this embodiment, 1. The carrying capacity of each modular vehicle unit is limited, and the single-axle load is less than 35t. The number of axes is determined by the weight of the cargo, and the length of the axes (i.e., the number of power module units on each axis) is determined by the size of the cargo.

[0084] 4.1 The power module unit and the module unit workshop are parallel.

[0085] Mechanical merging: The upper part is connected by a lifting cylinder and the lower part is connected by a hydraulic pin shaft.

[0086] Hydraulic paralleling: The paralleling hoses on the modular unit vehicle are connected to the quick connectors on the left and right rear of the PPU.

[0087] Electrical parallel connection: The parallel connection cable on the PPU is directly connected to the module unit vehicle.

[0088] Hydraulic pin operation:

[0089] Start driving or withdrawing the pin: Start PPU, first turn the handle of the manual reversing valve clockwise to the "driving pin" or "withdrawing pin" state, and then open the ball valve QF02.

[0090] If the pin is stuck during the pinning process: first close the ball valve QF02, and then put the handle of the manual reversing valve in the required "pin withdrawal" or "pinning" state.

[0091] Hydraulic pin is in place: first close the ball valve QF02, then put the manual reversing valve handle in the required "cut-off" state, and finally close the ball valve QF02.

[0092] 4.2 Longitudinal rigid paralleling of modular unit workshops

[0093] 4.2.1 Parallel connection

[0094] Mechanical parallel connection: the upper part is connected by bolts and the lower part is connected by hydraulic pins.

[0095] Hydraulic paralleling: The paralleling hose at the front of one modular unit vehicle is connected to the quick connectors on both sides of the rear of another modular unit vehicle.

[0096] Electrical paralleling: A separate paralleling cable connects the two module unit vehicles.

[0097] The hydraulic pin shafts that do not connect the two unit vehicles in the vehicle group are pinned into the vehicle connection ear plates according to the above (1) content to avoid interference between the wheels and the hydraulic pin shafts during vehicle steering.

[0098] 4.2.2 Hydraulic pin operation:

[0099] Start driving or withdrawing the pin: Start PPU, first open the two ball valves QF08, and turn the manual reversing valve handle clockwise to the "driving pin" or "withdrawing pin" state.

[0100] Hydraulic pin is in place: first put the manual reversing valve handle into the desired "cut-off" state, and finally close the ball valve QF08.

[0101] 4.3 The two modular transport workshops are rigidly connected side by side laterally.

[0102] Mechanical paralleling: connected by a horizontal paralleling device.

[0103] Hydraulic paralleling: Determine whether to connect based on the grouping of hydraulic support points.

[0104] Electrical paralleling: A separate transverse paralleling cable connects the two module transport vehicles.

[0105] If two train sets are rigidly connected side by side laterally, and one of the two longitudinal train sets is not equipped with a power module unit, if the user chooses a transverse hydraulic hose connection device, the train set must be arranged on the right side of the other train set and must be connected to the power module unit of the other train set through hydraulic pipelines.

[0106] 4.4 Horizontal soft merging of two modular transport workshops

[0107] Mechanical connection: There is no mechanical connection between the module transport vehicle groups.

[0108] Hydraulic paralleling: Determine whether to connect based on the grouping of hydraulic support points.

[0109] Electrical paralleling: A separate horizontal paralleling communication cable connects multiple module transport vehicles.

[0110] In this embodiment, due to the overweight, oversized and asymmetric eccentricity of the barrel-type foundation structure, the module vehicle is prone to uneven force. The terrain also has undulating slopes. Careful design is required during the vehicle merging process to ensure that the force points of the components are uniform.

[0111] 4.5 Disassembly of the modular transport vehicle set

[0112] In general, it is recommended not to disassemble the power module unit and the module unit vehicle to which it is directly connected.

[0113] When the module transport vehicle is to be disassembled into a module unit vehicle for separate use, it is only necessary to operate the pinning handle to withdraw the hydraulic pin from the vehicle-joining connecting lug, and the remaining connecting parts can be removed.

[0114] After the connecting hose used for splicing in the hydraulic system is disconnected, each module unit vehicle is equipped with a quick connector to prevent oil from flowing out and dust from entering the pipe. According to the four-point support and three-point support principles, the open and closed states of the ball valves in the series and parallel pipelines should be switched at this time.

[0115] To disassemble the electrical system, just disconnect the plug of the parallel cable or circuit.

[0116] To prevent contamination, cover the rear hydraulic and electrical connectors of the modular vehicle with built-in dust covers or protect them with plastic sheets.

[0117] 4.6 Loading

[0118] 4.6.1 Adjust the center of mass of the cargo.

[0119] During the loading process, the level of the cargo platform is adjusted to ensure that the center of mass of the cargo is as close as possible to the two inclined lines to prevent the cargo from tipping over.

[0120] Under rated load, when the center of gravity of the cargo is high, the driving speed should be within 1 km / h. The vehicle cargo platform must be driven at the middle height.

[0121] Driving along the longitudinal direction of the vehicle body: When the ratio of the height of the center of gravity of the payload (X) and the base spacing of the support group (Y) is greater than 1, the center of gravity of the payload is considered to be high. Base spacing of the support group (Y): the center distance of the front and rear hydraulic groupings. Driving along the transverse direction of the vehicle body: When the ratio of the height of the center of gravity of the payload (X) and the center spacing of each wheel (Z) is greater than 1.5, the center of gravity of the payload is considered to be high.

[0122] 4.6.2 Load diagram.

[0123] Load Diagram Description

[0124] Application examples:

[0125] Given: Payload = 400 tons

[0126] Required support spacing to avoid exceeding the allowable load of the transport vehicle steel structure.

[0127] Solution: On the vertical axis of the diagram (payload per support), draw a horizontal line from the coordinate of half the payload, 200 tons in this example, to intersect the curve in the diagram.

[0128] In this embodiment, due to the dynamic load effect and the influence of the slope, the center of mass of the component and the center of mass of the effective load are not on the same vertical line, but the center of gravity of the effective load is located 2m behind the optimal center of gravity of the effective load. Therefore, the support point is not arranged under the center of mass of the component, but 2m behind it.

[0129] 4.7 Determination of vehicle group

[0130] 4.7.1 Relationship curve between the number of axles and load

[0131] If the cargo load mass is known and the corresponding speed axle load is set, the required number of axles can be found from the curve.

[0132] Based on the number of axles found, the number and type of unit vehicles can be determined.

[0133] The total mass of the train set can be determined based on the mass of the cargo and the number of axles required.

[0134] 4.7.2 Relationship curve between the number of drive suspensions and the total mass

[0135] The chart shows the amount of drive suspension required for driving on a corresponding slope (the vehicle's rolling friction coefficient is taken as 0.03).

[0136] Note: 1 axis equals 2 suspensions.

[0137] In this embodiment, a longitudinal column means that a vehicle group has several longitudinal lines, which are basically two longitudinal lines. The axis line is a row of wheels as one axle. The modular unit vehicles in this embodiment are all four-axle or six-axle; that is, the modular vehicle of this project adopts a combination of two longitudinal four-axle and two longitudinal six-axle unit vehicles, which is a combination of small vehicles and has high flexibility.

[0138] 4.7.3 Relationship curve between axis load and lifting pressure

[0139] Through the simulation chart, the axle load can be found if the pressure is known, and the total weight of the train group can be determined based on the number of axles used.

[0140] 4.8 Cargo support

[0141] To ensure that the bending moment of the vehicle is not exceeded, the number and distance of the support points for loading cargo must meet the following conditions:

[0142] a) The length of overhang A1 and A2 shall not exceed Amax;

[0143] b) The distance B1 / B2 / .....Bn shall not exceed Bmax.

[0144] In this embodiment, a support frame 200 is also included, which is a structural stress point. A1 and A2 are the distances between the action points and the two ends of the module vehicle group, and B1...Bn are the spacings between the action points. In this embodiment, due to the combination of dynamic load effects, the effective load of the module vehicle will be reduced, and the effective load action line is 2m behind the optimal effective load center of gravity, so the arrangement of the action points should follow this rule.

[0145] Amax and Bmax are the maximum limits specified by the equipment. The limits of Amax and Bmax are different for modular vehicles with different axle load capacities. The specific parameters are shown in Table 5.

[0146] Table 5

[0147] Number of axes(t) Amax(m) Bmax(m) 48 6.3 14 40 7 15.4 30 8 18 20 10 22.5

[0148] 4.9 Load bearing surface

[0149] Due to the limitations of vehicle design, the load at all locations on the loading surface is not the same.

[0150] When loading, please note that the cargo support points mainly fall on the main beam (area 1) and avoid non-load-bearing areas.

[0151] Part 5, Transportation Operations.

[0152] 1.1 Paying off

[0153] 1.1.1 Laying out the lines in the vehicle entry area

[0154] Follow these steps to lay out the line:

[0155] According to the site conditions, wire drawing or ground ink marking is used to lay out the lines and complete the setting of marking lines for the initial positioning of the front, back, left, and right directions of the transport vehicle;

[0156] 1.1.2 Laying out the lines in the landing area

[0157] The layout of the landing area should be carried out in accordance with the actual situation of the piers on site.

[0158] 1.2 Vehicle splicing and no-load linkage

[0159] After the assembly of each single vehicle group is completed, start each vehicle group and conduct pipeline connection, valve position, steering, drive synchronization and electrical signal transmission tests. Through operation, check the coordination of steering, lifting and walking of the vehicle group.

[0160] 1.3 Vehicle entry and positioning

[0161] Lower the height of the modular vehicle until the hydraulic system is completely zero. Under the action of its own weight, the vehicle group can be lowered until the upper plane of the vehicle group is parallel to the ground;

[0162] Operate the lifting module train to a height of 1250mm to meet loading requirements;

[0163] Based on the reference line of the vehicle entry area, the driver drives the assembled modular vehicles to the vehicle entry position; rubber sheets are laid on the modular vehicles at the contact position with the cargo to increase the friction coefficient between the vehicle and the cargo;

[0164] According to the marking lines on the ground, two plumb lines are arranged at the front and side of the transport vehicle group to check the distance between the vehicle side line and the marking lines, and the positioning of the module vehicle group is completed to ensure that the error is within ±50mm.

[0165] Use the same method to put other vehicle groups into position.

[0166] 1.4 Lifting

[0167] 1.4.1 First Lifting

[0168] Operate each train set separately, from the module train set to the rubber plate on the train set in contact with the cargo (the supporting hydraulic pressure is 60 bar). At this time, check the height and lifting pressure of each train set, and proceed with subsequent operations after confirming that they are correct.

[0169] 1.4.2 Hydraulic pipeline connection

[0170] According to the vehicle grouping and the overall transportation plan, the whole vehicle adopts four-point support. Therefore, the lifting pipelines at the front and rear of vehicles 1, 2, 3, 4, and 5 need to be connected.

[0171] 1.4.3 Electrical settings

[0172] According to the vehicle grouping and the overall transportation plan, connect the electrical communication lines of each vehicle group, as shown in the figure below. Correctly set the vehicle group coordinates, set sensors, dip switches, install terminal resistors, and configure the bridge.

[0173] After the train set is connected, the train set coordinates need to be set. Please refer to the table below for specific settings. The train set coordinates and groups are shown in Table 6.

[0174] Table 6 Coordinate settings for each bicycle group

[0175] Serial number Project meaning X Y A Remark 1 Car Group 1 6150 0 0 2 Car No. 2 3250 0 0 3 Car No. 3 0 0 0 4 Car No. 4 -3250 0 0 5 Car No. 5 -6150 0 0

[0176] Set the vehicle group sensor, please refer to Table 7 below for details.

[0177] Table 7 Coordination relationship between angle sensor and height sensor of each bicycle group

[0178] Serial number Cycling Group A B C D Remark 1 Car Group 1 A A D D 2 Car No. 2 A A D D 3 Car No. 3 A B C D 4 Car No. 4 C C D D 5 Car No. 5 C C D D

[0179] Set the vehicle group DIP switch, refer to Table 8 below for specific settings.

[0180] Table 8 PPU and unit vehicle dial settings in each single vehicle group

[0181]

[0182] After the above work is completed, start the train set and carry out pipeline connection, valve position, steering, drive synchronization and electrical signal transmission detection. Through operation, check the coordination of steering, lifting and walking of the train set.

[0183] 1.4.4 Synchronous lifting

[0184] a) Operate the hydraulic support system of the grouped module vehicle in increments of 20 bar, gradually raising the support pressure to 80 bar;

[0185] b) Operate the synchronous lifting button on the remote control. The lifting height is 20mm each time. If there is an error in the height, press this point on the remote control separately, adjust the height to the same level, and then lift simultaneously.

[0186] c) Continue lifting until the support pressure of A, B, C, and D reaches about 180 bar, and the total lifting force reaches 75% of the cargo weight, which is less than the total cargo weight, and the support frame is not separated from the ground;

[0187] d) Continue lifting. When the support pressure of A, B, C, and D reaches 200 bar, the support frame begins to separate from the ground;

[0188] e) Continue lifting until the module truck is lifted to about 1500mm and reaches the transport height, completing the lifting of the cargo.

[0189] 1.5 Transportation

[0190] a) Connect the hydraulic oil pipes and data cables of the vehicle group according to the modular vehicle assembly plan, and only connect one remote controller;

[0191] b) Turn on the power switches on the five PPUs;

[0192] c) Connect the remote controller PPU to power on and initialize the electronic control system;

[0193] d) Turn on the remote control power switch, enter the setting mode, set the coordinates, valve and sensor, save, and exit the setting mode;

[0194] e) Start 5 PPUs respectively, and personnel at each observation point are in place and enter standby status;

[0195] f) Based on the conditions at each observation position, the operations commander gives operating instructions to the driver via the intercom.

[0196] Guarantee measures:

[0197] Control during transportation: After the lifting and adjustment is completed, the module car is left still for 5 minutes. The operator closely monitors the cargo, transport tools and module car around the module car for any abnormalities. When everything is normal, the project leader issues a departure order. During transportation, the running speed is strictly controlled, the remote controller is in low gear, and the real-time speed display on the remote controller is closely observed. The straight-line speed is not more than 0.2km / h (i.e. 3.3m / min), and the turning speed is not more than 0.1km / h (i.e. 1.6m / min).

[0198] Ensure the levelness of the modular vehicle: Install a digital level on the modular vehicle to monitor the horizontal state of the transport vehicle in real time and make timely adjustments; due to the mutual compensation between the modular vehicle's own hydraulic accumulator and the hydraulic suspension, the vehicle has good shock absorption and adaptability, so it can ensure that the modular vehicle is in a horizontal position during transportation and reduce vibration.

[0199] 1.6RoRo transfer

[0200] The vehicle transporting the goods moves slowly and transports the goods to the barge through the ferry, controlling the matching of the vehicle's driving speed and the barge's ballast water adjustment speed.

[0201] 1.7 Get off the vehicle

[0202] 1.7.1 Positioning

[0203] Taking the reference line of the unloading area as a benchmark, the driver drives the transport vehicle loaded with goods to the positioning position and completes the positioning of the goods, ensuring that the error is within ±50mm.

[0204] 1.7.2 Synchronous operation of landing

[0205] The process of lowering the vehicle is the reverse process of the lifting process, and the steps are as follows:

[0206] a) Observe the height of the vehicle group on the remote control or display screen to ensure the height is consistent;

[0207] b) Operate the synchronous landing button on the remote control, and the landing height is 50mm each time;

[0208] c) The support frame touches the ground;

[0209] d) Lower the module car at the same time, reducing the pressure by 20 bar each time until the support pressure reaches 60 bar;

[0210] e) Each of the five vehicle groups is powered on and initialized to clear the coordinates, valves and sensor settings;

[0211] f) Completely land the module vehicle.

[0212] 1.8 Withdrawal

[0213] a) Wait for the inspection department to confirm and then end;

[0214] b) After transportation, the module truck slowly drives away from the placement area;

[0215] c) The empty vehicle leaves the site.

[0216] 1.9 Transportation Inspection

[0217] During the transportation process, special inspection personnel should be arranged to inspect the following:

[0218] a) Check the vehicle position before, during and after transportation to ensure that the goods are correctly loaded and unloaded;

[0219] b) Check and supervise the operational compliance of specific staff during the transportation process;

[0220] c) Check and supervise the vehicle's lifting pressure, lifting height, and the synchronization of lifting, turning and moving during transportation.

[0221] In this embodiment, the cargo meets the technical requirements by configuring 176 axles + 5 PPUs, and by reasonably matching the number of drive axles of the PPU and the modular vehicle and the electric proportional control of the vehicle drive system;

[0222] The transportation process is simple and easy to operate;

[0223] Through analysis and calculation, the positive bending moment of all train sets did not exceed the maximum allowable positive bending moment of the frame of 7700kNm, and the maximum negative bending moment of all train sets met the requirements and did not exceed the maximum allowable negative bending moment of the frame of -6200kNm. The transportation plan met the use requirements.

[0224] In this embodiment, the modular vehicle assembly process includes the following steps: assembling the power module units of the modular vehicle, determining the number of vehicle spools, determining the number of driving suspensions during slope driving, and determining the relationship curve between load and lifting pressure; the power module unit can be used in combination with one or more modular unit vehicles; according to the total weight and size of the transported goods, the number of power module units and the number of vehicle groups required for assembling the modular vehicle are determined, and the modular vehicle can adjust the height difference on an uneven site through the organic combination of the longitudinal rigid paralleling between the power module unit and the vehicle group and the lateral soft paralleling of the two modular transport workshops, thereby eliminating the separation of components from the vehicle and the deviation of the two modular vehicles, and the component force-bearing structure is located on the center line of the modular vehicle axis, ensuring that during the transportation of super-large components, the axis units of the modular vehicle can be evenly stressed, thereby ensuring the stability of transportation; in this embodiment, the weight of the goods is linearly related to the number of axis lines.

[0225] In this embodiment, the module car is rigidly connected in the longitudinal direction and softly connected in the transverse direction. Because the components of this project are large and heavy and the ground is uneven, rigid connections cannot be used in both the longitudinal and transverse directions, otherwise it will be difficult to adjust the load during transportation. The module car of this project uses soft connection in the transverse direction, and the lifting pipelines between each single car group are connected by a total of 10 sets of soft connection hydraulic hoses. In this embodiment, the module car can enter the bottom space of the bucket foundation, then lift the bucket foundation and then transport it out, ensuring construction safety.

[0226] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0227] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The application of modular vehicles in water transport projects, specifically the use of assembled modular vehicles for heavy cargo transportation.

2. The use according to claim 1, characterized in that: It also includes the assembly of the modular vehicle, which specifically includes the following steps: assembling the modular vehicle power module unit, determining the number of vehicle spools, determining the number of driving suspensions during slope driving, and determining the relationship curve between load and lifting pressure; In the assembly of the power module units of the module vehicle, each power module unit is used in combination with one or more module unit vehicles; The power module unit and the module unit vehicle are organically connected by longitudinal rigid connection, and adjacent module unit vehicles are organically connected by transverse soft connection.

3. The use according to claim 2, characterized in that: It also includes the determination of the number of power module units and module unit train sets, which is specifically determined based on the total weight and size of the heavy cargo.

4. The use according to claim 3, characterized in that: The longitudinal rigid military vehicle includes a parallel vehicle connection and a hydraulic pin operation, and the parallel vehicle connection includes at least a mechanical parallel vehicle, a hydraulic parallel vehicle and an electrical connection.

5. A modular vehicle assembly process according to claim 3, characterized in that: The lateral soft paralleling between the modular unit vehicles includes rigid paralleling and soft paralleling, the rigid paralleling includes at least mechanical paralleling and electrical paralleling, and the soft paralleling includes at least electrical paralleling.

6. The use according to claim 1, characterized in that: The heavy cargo transportation includes ramp driving transportation, and also includes cargo posture change analysis before ramp driving transportation to determine whether the modular vehicle can carry the heavy cargo and pass the ramp.

7. The use according to claim 6, characterized in that: The analysis of cargo posture changes before ramp transportation is specifically performed through analysis of changes in the angle between the plane of the modular vehicle and the ground in the transportation path, and the compensatory tilt of the hydraulic suspension in the longitudinal rigid vehicle connection.

8. The use according to claim 6, characterized in that: During the heavy cargo transportation, the tipping angle of the module vehicle in the transportation path is 6°-10°.

9. The use according to claim 1, characterized in that: The heavy cargo is a barrel-type foundation structure, the mass of the barrel-type foundation structure is not less than 6000t, the barrel-type foundation structure includes at least two layers, and the length is not less than 40m.

10. The use according to claim 9, characterized in that: An insertion space of no less than 1.2 m is reserved at the bottom of the barrel-type basic structure, and the module vehicle enters the insertion space and lifts the barrel-type basic structure for transportation.

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