CN109434333B - A loading clamping device for semi-trailer chassis welding - Google Patents

Abstract

The invention discloses a loading clamping device for welding a semi-trailer chassis, which comprises a base, wherein a plurality of first loading assemblies and second loading assemblies are symmetrically arranged on two sides of the upper part of the base, the first loading assemblies on each side are distributed at equal intervals, the second loading assemblies on each side are distributed at equal intervals, the first loading assemblies and the second loading assemblies on each side are staggered, a plurality of positioning clamping assemblies are arranged on the symmetrical axis of the first loading assemblies, an adjusting assembly is further arranged on the base, a limiting plate is further arranged on the base, and the limiting plate is positioned at the front end of the longitudinal beam in the conveying direction.

Description

A loading clamping device for semi-trailer chassis welding

Technical field

The invention relates to the technical field of semi-trailer chassis welding, and in particular to a loading clamping device for semi-trailer chassis welding.

Background technique

The main part of the semi-trailer chassis includes two parallel longitudinal beams. As shown in Figure 1, several cross beams are welded between the longitudinal beams. The longitudinal beams are generally I-shaped or C-shaped and are welded from steel plates. After the beam welding is completed, use a crane to lift the two longitudinal beams to the assembly welding station of the chassis. Place the two longitudinal beams on the clamping tool and adjust the parallel spacing of each part of the longitudinal beam to ensure that after the longitudinal beams are clamped, the cross beam can After it is successfully welded and the longitudinal beams are clamped, the workers mark the longitudinal beams according to the position of each beam on the drawing, align the beams with the marks one by one, hold the beams with their hands, and use a welding gun to connect the beams to the inside of the longitudinal beams. The joints were fixed by spot welding. The inventor found that in the previous welding process of cross beams and longitudinal beams, there were many areas that needed improvement: the longitudinal beams were large in mass, and the method of using a traveling crane to transport them was not only inefficient, but also posed safety hazards. After the longitudinal beam is removed, it takes a certain amount of time to correct the parallel spacing of each part of the longitudinal beam. Every time the beam is welded, it needs to be measured and marked on the longitudinal beam. The preparation time is long and manual errors are prone to occur. When welding the beam, When welding cross beams, they need to carry the cross beams, which is inconvenient for workers to weld and requires high placement of the cross beams.

Contents of the invention

In view of this, the purpose of the present invention is to provide a loading clamping device for semi-trailer chassis welding to solve all or one of the defects in the aforementioned background technology.

Based on the above purpose, the present invention provides a loading clamping device for semi-trailer chassis welding, which includes a base. Several first loading assemblies and second loading assemblies are symmetrically provided on both sides of the upper part of the base. The third loading assembly on each side One feeding assembly is equally spaced, the second loading assembly on each side is equally spaced, the first loading assembly and the second loading assembly on each side are staggered, and the first loading assembly is used for longitudinal beam transportation. The second loading assembly is used for the lateral movement and clamping of the longitudinal beam. There are several positioning clamping assemblies on the symmetry axis of the first loading assembly. The positioning clamping assembly is used for In order to position and clamp the cross beam, the base is also provided with an adjustment component, and the adjustment component is used to drive each positioning and clamping component to make an independent linear movement along the symmetrical axis of the first loading component. A limiting plate is also provided on the base, and the limiting plate is located at the front end of the longitudinal beam in the conveying direction. The limiting plate is used to limit the longitudinal position of the longitudinal beam.

Optionally, the first loading assembly includes a lifting block, a fifth hydraulic cylinder, a bracket, a second roller, a lifting block and a guide rod, and the guide rod and the fifth hydraulic cylinder are fixed on the upper part of the lifting block. , the lower part of the lifting block is fixed on the front end of the piston rod of the fifth hydraulic cylinder, the lifting block is slidingly connected to the guide rod, the fifth hydraulic cylinder drives the lifting block to move linearly in the vertical direction, and the bracket is fixed on On the opposite side of the lifting block of the first loading assembly on both sides, the bracket has a C-shaped structure, the second roller is fixed inside the bracket, and the rolling direction of the second roller is consistent with the conveying direction of the longitudinal beam. , the second loading assembly includes a fourth hydraulic cylinder, a vertical plate, a push block, a first roller, a horizontal plate, a first reinforcing plate, a second reinforcing plate and an installation plate. The vertical plate is vertically fixed on the installation On the upper part of the plate, the second reinforcing plate is a right-angled triangular plate with one straight edge fixedly connected to the side of the vertical plate, and the other straight edge fixedly connected to the upper part of the mounting plate. The fourth hydraulic cylinder is fixed on the upper part of the vertical plate. , the push block is fixed on the front end of the piston rod of the fourth hydraulic cylinder, the horizontal plate is fixed on the opposite side of the longitudinal plate of the second loading assembly on both sides, and the first reinforcing plate is a right-angled triangular plate with a straight One side is fixedly connected to the side of the vertical plate, and the other straight edge is fixedly connected to the lower part of the horizontal plate. The first roller is arranged on the upper part of the horizontal plate, and the rolling direction of the first roller is perpendicular to the conveying direction of the longitudinal beam. , the positioning and clamping assembly includes a base plate, a moving plate, a first hydraulic cylinder, an adjusting plate, a backing plate, a second hydraulic cylinder, a lifting plate, a third hydraulic cylinder, an adjusting hole and a clamping block. The moving plate is symmetrically arranged on At both ends of the upper part of the bottom plate, the adjustment holes are strip holes and are symmetrically arranged at both ends of the bottom plate. The adjustment holes are parallel to the length direction of the bottom plate. The moving plate is provided with bolts that penetrate to the lower part of the adjustment holes. The bolts are provided with nuts for locking the moving plates. The first hydraulic cylinder is symmetrically fixed on the upper parts of the moving plates at both ends. The adjusting plate is fixed on the front end of the piston rod of the first hydraulic cylinder. The first hydraulic cylinder The adjusting plates are driven to move toward or away from each other. The lifting plate is symmetrically arranged in the middle of the bottom plate. The bottom plate is provided with a groove to accommodate the lifting plate. When the lifting plate is located in the groove, the upper part of the lifting plate The end face is lower than the upper end face of the base plate. The third hydraulic cylinder is fixed on the lower part of the base plate. The piston rod of the third hydraulic cylinder penetrates the base plate and is fixedly connected to the lifting plate. The third hydraulic cylinder drives the lifting plate to move vertically. direction of linear movement, the back plate and the second hydraulic cylinder are respectively fixed at both ends of the upper part of the lifting plate, the clamp block is fixed at the front end of the piston rod of the second hydraulic cylinder, and the second hydraulic cylinder drives the clamp block towards the back The plate moves in the direction of approaching or moving away. The adjustment assembly includes a mounting slot, a protective plate, a column, a rotating seat, a gear, a rack, a rotating shaft, a reducer, a motor, a slider and a guide rail. The mounting slot is arranged in the middle of the base. position, the number of the racks is two and they are fixed at the bottom of the installation slot. The two racks are symmetrical about the symmetry axis of the first loading assembly. The guide rail is fixed at the middle position of the bottom of the installation slot. The guide rail Parallel to the rack, the number of the slide blocks is several. Each slide block is slidingly connected to the guide rail. The motor and the reducer are arranged at the middle position of the upper part of the slide block. The output end of the motor is connected to the reducer. The input end of the reducer is connected. The reducer has two output ends and are located on both sides of the reducer. The rotating seat is arranged at both ends of the upper part of the slide block. The rotating shaft is fixed in the bearing inner ring of the rotating seat. One end of the rotating shaft is connected to the output end of the reducer, and the other end is fixedly connected to the gear. The gear and the rack mesh with each other. The column is fixed at the middle position of the upper part of the slider. Each of the positioning clamping components is arranged on On the upper part of the upright column, the protective plate is arranged on the upper part of the installation groove. There is a gap in the middle of the protective plate, and the upright column extends upward from the gap.

Optionally, the protective plate is provided with a scale line, the scale line is parallel to the symmetry axis of the first loading assembly, and the starting end of the scale line is aligned with the side of the limiting plate facing the first loading assembly. , the scale line is located at the gap in the middle of the protective plate.

As can be seen from the above, the loading clamping device for semi-trailer chassis welding provided by the present invention moves the longitudinal beam from its welding station to the chassis welding station through the first loading assembly during operation. On the position, there is no need to move the longitudinal beams by means of a traveling crane. The transfer efficiency is high and the safety hazards caused by the use of traveling cranes are reduced. The cross beams are positioned and clamped through positioning and clamping components, so that workers do not need to use their hands when welding. Use the cross beams for welding, which facilitates the welding operation and also makes the cross beams accurately positioned, reducing cross beam position errors and improving the stability of the overall chassis structure. The position of each cross beam can be quickly adjusted by adjusting the components, reducing the need for manual marking of the cross beam positions. time and high adjustment efficiency. When the cross beam is fixed, the second loading assembly moves the longitudinal beam laterally and presses it on both ends of the cross beam, saving the time of adjusting the parallel spacing of the two longitudinal beams and improving the welding of the chassis. Efficiency, there are several second loading components and they are equidistantly distributed. When the longitudinal beam is pressed against the end of the crossbeam, the pressing force is applied to the longitudinal beam at equal intervals. Each part of the longitudinal beam is evenly stressed to avoid the longitudinal beam. Too long resulting in a certain degree of curvature.

Description of the drawings

Figure 1 is a schematic diagram of a semi-trailer chassis;

Figure 2 is a schematic top view of the loading clamping device of the present invention;

Figure 3 is a front schematic view of the loading clamping device of the present invention;

Figure 4 is a front schematic view of the partial structure of the adjustment component and the positioning clamping component of the present invention;

Figure 5 is a schematic top view of the positioning clamping assembly of the present invention;

Figure 6 is a schematic top view of part of the structure of the adjustment assembly of the present invention;

Figure 7 is a front schematic view of the second loading assembly of the present invention;

Figure 8 is a schematic top view of the second loading assembly of the present invention;

Figure 9 is a front schematic view of the first loading assembly of the present invention;

Figure 10 is a schematic top view of the first loading assembly of the present invention.

Among them, 1-base, 2-positioning clamping component, 21-base plate, 22-moving plate, 23-first hydraulic cylinder, 24-adjusting plate, 25-back plate, 26-second hydraulic cylinder, 27-lifting plate, 28-Third hydraulic cylinder, 29-Adjusting hole, 210-Clamp block, 3-Second feeding component, 31-Fourth hydraulic cylinder, 32-Vertical plate, 33-Push block, 34-First roller, 35 -Horizontal plate, 36-First reinforcement plate, 37-Second reinforcement plate, 38-Mounting plate, 4-First loading assembly, 41-Heightening block, 42-Fifth hydraulic cylinder, 43-Bracket, 44- Second roller, 45-lifting block, 46-guide rod, 5-limit plate, 6-adjustment component, 61-installation slot, 62-protective plate, 63-column, 64-rotating seat, 65-gear, 66 -Rack, 67-shaft, 68-reducer, 69-motor, 610-slider, 611-guide rail, 7-scale mark, 8-cross beam, 9-longitudinal beam.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to specific embodiments and the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities or parameters with the same name but not the same, so it can be seen that "first" and "second" It is only for the convenience of description and should not be understood as a limitation on the embodiments of the present invention. In addition, the direction and position terms mentioned in the present invention, such as "upper", "middle", "lower", "front", "back", "Left", "right", "inside", "outside", "side", etc. are only for reference to the direction and position of the attached drawings. Therefore, the direction and position terms used are for explaining and understanding the present invention. This is not intended to limit the scope of the following embodiments of the present invention and will not be described one by one.

Based on the above purpose, a loading clamping device for semi-trailer chassis welding is provided, including a base. Several first loading assemblies and second loading assemblies are symmetrically provided on both sides of the upper part of the base. The third loading assembly on each side One feeding assembly is equally spaced, the second loading assembly on each side is equally spaced, the first loading assembly and the second loading assembly on each side are staggered, and the first loading assembly is used for longitudinal beam transportation. The second loading assembly is used for the lateral movement and clamping of the longitudinal beam. There are several positioning clamping assemblies on the symmetry axis of the first loading assembly. The positioning clamping assembly is used for In order to position and clamp the cross beam, the base is also provided with an adjustment component, and the adjustment component is used to drive each positioning and clamping component to make an independent linear movement along the symmetrical axis of the first loading component. A limiting plate is also provided on the base, and the limiting plate is located at the front end of the longitudinal beam in the conveying direction. The limiting plate is used to limit the longitudinal position of the longitudinal beam.

Referring to Figure 2 and combined with Figure 3, as an embodiment, the loading clamping device for semi-trailer chassis welding of the present invention is provided next to the welding station of longitudinal beam 9. The direction of the arrow in Figure 2 is In the loading direction of the longitudinal beam 9, the first loading assembly 4 and the second loading assembly 3 are staggered at both ends of the base 1. The conveying device of the first loading assembly 4 at the rear end of the arrow and the welding station of the longitudinal beam 9 is as follows The roller conveyors are aligned. When the welding of the longitudinal beam 9 is completed, it is moved to the first loading assembly 4 through the conveying device of the longitudinal beam 9. The first loading assembly 4 moves the longitudinal beam 9 in the direction of the arrow. When the front end of the longitudinal beam 9 touches the limit plate 5 and stops, the limit plate 5 limits the position of the longitudinal beam 9 in its length direction, and then the workers place the cross beams 8 on the positioning clamping assembly 2 one by one, and Position and clamp the cross beam 8, and then move the positioning and clamping components 2 one by one through the adjustment component 6 to move the cross beam 8 to the corresponding position according to the drawing, and then move the longitudinal beam 9 laterally through the second loading component 3 to make the longitudinal beam 9 Approach the crossbeam 8, and when the opposite inner side of the longitudinal beam 9 is aligned with both ends of the crossbeam 8, the longitudinal beam 9 is clamped at both ends of the crossbeam 8 through the second loading assembly 3, and then the worker moves the crossbeam 8 and the longitudinal beam When the device is working, the longitudinal beam 9 is moved from its welding station to the welding station of the chassis through the first loading assembly 4, and there is no need to move the longitudinal beam 9 through a crane. , high transfer efficiency, reducing safety hazards caused by the use of traveling cranes. The cross beam 8 is positioned and clamped through the positioning clamping assembly 2, so that workers do not need to hold the cross beam 8 with their hands when welding, which facilitates the welding operation. It also makes the position of the cross beam 8 accurate, reduces the position error of the cross beam 8, and improves the stability of the overall chassis structure. The position of each cross beam 8 is quickly adjusted through the adjustment component 6, reducing the time of manually marking the position of the cross beam 8, and the adjustment efficiency is high. After the cross beam 8 is fixed, the second loading assembly 3 moves the longitudinal beam 9 laterally and presses it against both ends of the cross beam 8, eliminating the time of adjusting the parallel spacing of the two longitudinal beams 9 and improving the welding efficiency of the chassis. , there are several second loading components 3 and they are equally spaced. When the longitudinal beam 9 is pressed against the end of the cross beam 8, a pressing force is applied to the longitudinal beam 9 at equal intervals. Each part of the longitudinal beam 9 is evenly stressed. Avoid a certain degree of curvature due to the excessive length of the longitudinal beam 9.

In some optional embodiments, as shown in Figures 4 and 5, the cross beams 8 are first positioned and clamped one by one, and the cross beams 8 are placed on the upper end of the bottom plate 21 so that they are located between the backing plate 25 and the clamping block 210. The piston rod of the second hydraulic cylinder 26 extends to a certain distance, so that the clamping block 210 pushes the cross beam 8 against the backing plate 25 without clamping, and then controls the piston rod of the first hydraulic cylinder 23 to extend to the maximum stroke. A hydraulic cylinder 23 is symmetrically arranged on the bottom plate 21. When its piston rod extends, the front-end adjustment plate 24 pushes the crossbeam 8 from both ends of the crossbeam 8 and pushes the crossbeam 8 to the middle position. The first hydraulic cylinder 23 is fixed in the moving position. On the plate 22, the movable plate 22 is fixed on the upper part of the adjustment hole 29 through bolts and nuts. The position of the movable plate 22 is adjusted according to the different sizes of the cross beam 8, so that after the piston rod of the first hydraulic cylinder 23 reaches the maximum stroke, the distance between the adjustment plates 24 To adjust the length of the cross beam 8, the adjusting plate 24 pushes the cross beam 8 to the center of the bottom plate 21, and then controls the piston rod of the second hydraulic cylinder 26 to continue to extend, so that the cross beam 8 is pressed against the backing plate 25 by the clamping block 210, and then The first hydraulic cylinder 23 is controlled to retract the piston rod. When the cross beam 8 is clamped, the cross beams 8 are moved one by one through the adjustment assembly 6 to match the required position on the drawing. The positioning clamping assembly 2 positions and clamps the cross beam 8 Tight, there is no need to manually align and weld the cross beam 8 with the longitudinal beam 9 during welding. The position of the cross beam 8 during welding is accurate to avoid the positional deviation of the cross beam 8 during welding due to instability, thus affecting the stability of the overall structure. sex.

As shown in Figures 4 and 6, the reducer 68 reduces the output speed of the motor 69 and increases its rotational torque. The reducer 68 has two output ends. A rotating shaft 67 is provided on the output end. The reducer 68 drives the rotating shaft 67 to rotate. The rotating base 64 is used to support and fix the rotating shaft 67. When the rotating shaft 67 rotates, it drives the gear 65 to rotate. The gear 65 meshes with the rack 66 fixed at the bottom of the mounting groove 61. The gear 65 moves linearly along the rack 66 while rotating. , so that the slider 610 slides along the guide rail 611, and the slider 610 drives the positioning and clamping assembly 2 to move through the column 63, so that the cross beam 8 moves to different positions.

In order to protect the components in the installation slot 61, as shown in Figures 2 and 3, a protective plate 62 is provided on the upper part of the installation slot 61 to protect each part of the adjustment assembly 6, and at the same time to protect workers from stepping on them. On the rotating shaft 67 or gear 65, a safety accident occurs.

In order to improve the efficiency of determining the position of the cross beam 8, as shown in Figures 2 and 3, a limit plate 5 is provided on the base 1 to limit the position of the longitudinal beam 9 in its length direction, and a scale mark 7 is provided on the protective plate 62. , and the starting end of the scale mark 7 is aligned with the side of the limiting plate 5, so when the adjustment component 6 moves the positioning clamping component 2, the position of the beam 8 can be quickly read through the scale mark 7, and the scale mark 7 is set on the protective The gap in the middle of the plate 62 is close to the column 63 in the adjustment assembly 6, which is convenient for workers to take readings. Refer to the production drawings to move the beams 8 to the corresponding positions one by one, and then lift the lifting plate 27 through the third hydraulic cylinder 28. The lifting plate 27 drives the cross beam 8 to rise, and lifts the cross beam 8 to the same height as the second loading assembly 3, so that it is ready to be docked with the longitudinal beam 9 and perform welding operations.

After the longitudinal beam 9 is welded from flat plates, as shown in Figures 2-3 and 7-10, the piston rod of the fifth hydraulic cylinder 42 is controlled to push the lifting block 45 upward along the guide rod 46, so that the second roller 44 Rise to the same height as the conveying device of the welding station of longitudinal beam 9. The conveying device transports the longitudinal beam 9 to the second roller 44 and pushes the longitudinal beam 9 to move in the direction of the arrow in Figure 2 on the second roller 44. Align the front end of the longitudinal beam 9 with the limiting plate 5, and then control the piston rod of the fifth hydraulic cylinder 42 to pull the lifting block 45 to move downward along the guide rod 46 until the second roller 44 is lowered to the second loading assembly. 3 below the first roller 34, when the second roller 44 is below the first roller 34, the longitudinal beam 9 falls on the upper end of the first roller 34 and is no longer in contact with the second roller 44, and then controls the The piston rods of the four hydraulic cylinders 31 extend, so that the push block 33 pushes the longitudinal beam 9 to move toward the cross beam 8, and presses the longitudinal beam 9 on both ends of the cross beam 8. The second loading components 3 are arranged at equal intervals, so that the pressing blocks The pressure points exerted on the longitudinal beam 9 are distributed at equal intervals. Since the longitudinal beam 9 is long, uneven stress may easily cause local bending. The setting of the first roller 34 facilitates the push block 33 to push the longitudinal beam 9 to move laterally, without the need for workers. Manual adjustment improves clamping efficiency and saves manpower. The mounting plate 38 at the bottom of the second loading assembly 3 is fixed to the upper part of the base 1 through bolts, and a second reinforcing plate 37 is provided between the mounting plate 38 and the vertical plate 32 To improve the stability of the vertical plate 32, a first reinforcing plate 36 is provided at the lower end of the horizontal plate 35 to improve the support capacity of the horizontal plate 35 to support a chassis with a larger mass.

After the cross beam 8 and the longitudinal beam 9 are clamped, the workers weld the joints. After the welding is completed, the piston rod of the second hydraulic cylinder 26 is first controlled to retract so that the clamping block 210 no longer presses the cross beam 8 against the backing plate 25 on, and then control the piston rod of the third hydraulic cylinder 28 to retract, so that the lifting plate 27 drops back into the groove of the bottom plate 21, and then control the piston rod of the fifth hydraulic cylinder 42 to extend, so that the lifting block 45 rises. 45 drives the second roller 44 to rise. When the height of the second roller 44 exceeds the height of the first roller 34, the welded chassis is gradually lifted up by the second roller 44, and the second roller 44 continues to rise. , when the second roller 44 is higher than the top of the limiting plate 5, it stops rising, and pushes the chassis to move on the second roller 44, so that the chassis moves to the next station, and neither the loading process nor the transfer process is required. Lifting is carried out by traveling crane, which is highly efficient and easy to operate.

Those of ordinary skill in the art should understand that the discussion of any above embodiments is only illustrative, and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples; under the spirit of the present invention, the above embodiments or Combinations between technical features in different embodiments are also possible, steps can be implemented in any order, and there are many other variations of different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Additionally, to simplify illustration and discussion, and so as not to obscure the present invention, well-known power/ground connections to integrated circuit (IC) chips and other components may or may not be shown in the figures provided. . Furthermore, devices may be shown in block diagram form in order to avoid obscuring the invention, and this is also in view of the fact that the details regarding the implementation of these block diagram devices are highly dependent on the platform on which the invention is to be implemented (i.e. , these details should be fully within the understanding of those skilled in the art). Where specific details (eg, circuits) are set forth to describe exemplary embodiments of the invention, it will be apparent to those skilled in the art that the specific details may be constructed without or with variations in these specific details. The present invention is implemented below. Accordingly, these descriptions should be considered illustrative rather than restrictive.

Although the invention has been described in conjunction with specific embodiments of the invention, many alternatives, modifications and variations of these embodiments will be apparent to those of ordinary skill in the art from the foregoing description. For example, other memory architectures such as dynamic RAM (DRAM) may use the discussed embodiments.

The embodiments of the invention are intended to embrace all such alternatives, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims (1)

1. The loading clamping device for welding the chassis of the semitrailer is characterized by comprising a base (1), wherein a plurality of first loading assemblies (4) and second loading assemblies (3) are symmetrically arranged on two sides of the upper part of the base (1), the first loading assemblies (4) on each side are distributed at equal intervals, the second loading assemblies (3) on each side are distributed at equal intervals, the first loading assemblies (4) and the second loading assemblies (3) on each side are distributed in a staggered mode, the first loading assemblies (4) are used for longitudinally moving when the longitudinal beams (9) are conveyed, the second loading assemblies (3) are used for transversely moving and clamping the longitudinal beams (9), a plurality of positioning clamping assemblies (2) are arranged on the symmetry axis of the first loading assemblies (4), the positioning clamping assemblies (2) are used for positioning and clamping a cross beam (8), an adjusting assembly (6) is further arranged on the base (1), the adjusting assembly (6) is used for driving each positioning clamping assembly (2) to move along the longitudinal beams (4) in a longitudinal direction, and limiting the longitudinal beams (5) are arranged on the longitudinal beams (5), and the limiting plates (5) are positioned on the longitudinal beams (9) in a limiting mode;

the first feeding assembly (4) comprises a lifting block (41), a fifth hydraulic cylinder (42), a bracket (43), a second roller (44), a lifting block (45) and a guide rod (46), wherein the guide rod (46) and the fifth hydraulic cylinder (42) are fixed at the upper part of the lifting block (41), the lower part of the lifting block (45) is fixed at the front end of a piston rod of the fifth hydraulic cylinder (42), the lifting block (45) is in sliding connection with the guide rod (46), the fifth hydraulic cylinder (42) drives the lifting block (45) to do linear movement in the vertical direction, the bracket (43) is fixed at the opposite side of the lifting block (45) of the first feeding assembly (4) at two sides, the bracket (43) is of a C-shaped structure, the second roller (44) is fixed inside the bracket (43), the rolling direction of the second roller (44) is consistent with the conveying direction of a longitudinal beam (9), the second feeding assembly (3) comprises a fourth hydraulic cylinder (31), a longitudinal plate (32), a pushing plate (33), a first reinforcing plate (38), a reinforcing plate (38) and a mounting plate (38) on the first transverse plate (38), the second reinforcing plate (37) is a right-angle triangle plate, one straight edge is fixedly connected with the side surface of the longitudinal plate (32), the other straight edge is fixedly connected with the upper part of the mounting plate (38), the fourth hydraulic cylinder (31) is fixed on the upper part of the longitudinal plate (32), the push block (33) is fixed at the front end of a piston rod of the fourth hydraulic cylinder (31), the transverse plate (35) is fixed on one side opposite to the longitudinal plate (32) of the second feeding assembly (3) on two sides, the first reinforcing plate (36) is a right-angle triangle plate, one straight edge is fixedly connected with the side surface of the longitudinal plate (32), the other straight edge is fixedly connected with the lower part of the transverse plate (35), the first roller (34) is arranged on the upper part of the transverse plate (35), the rolling direction of the first roller (34) is perpendicular to the conveying direction of the longitudinal beam (9), the positioning and clamping assembly (2) comprises a bottom plate (21), a moving plate (22), a first hydraulic cylinder (23), a regulating plate (24), a second regulating plate (25), a second regulating plate (26), a third hydraulic plate (27), a lifting plate (29) and a symmetrical lifting plate (29) are arranged at two ends of the regulating plate (21) and two ends of the regulating cylinder (29) and the regulating cylinder (29), the adjusting hole (29) is parallel to the length direction of the bottom plate (21), the moving plate (22) is provided with a bolt penetrating to the lower part of the adjusting hole (29), the bolt is provided with a nut used for locking the moving plate (22), the first hydraulic cylinder (23) is symmetrically fixed at the upper part of the moving plate (22) at two ends, the adjusting plate (24) is fixed at the front end of a piston rod of the first hydraulic cylinder (23), the first hydraulic cylinder (23) drives the adjusting plate (24) to move oppositely or back, the lifting plate (27) is symmetrically arranged at the middle position of the bottom plate (21), the bottom plate (21) is provided with a groove for accommodating the lifting plate (27), when the lifting plate (27) is positioned in the groove, the upper end face of the lifting plate (27) is lower than the upper end face of the bottom plate (21), the third hydraulic cylinder (28) is fixed at the lower part of the bottom plate (21), the piston rod penetrating the bottom plate (21) of the third hydraulic cylinder (28) is fixedly connected with the lifting plate (27), the lifting plate (27) is fixedly connected with the lifting plate (27), the lifting plate (26) is fixed at two ends of the lifting plate (26) in a straight line, the lifting plate (26) is fixed at the two ends of the lifting plate (26) respectively, the lifting plate (26) is fixed at the two ends of the lifting plate (25), the second hydraulic cylinder (26) drives the clamping blocks (210) to move towards the direction of approaching or separating from the backup plate (25), the adjusting assembly (6) comprises a mounting groove (61), a protection plate (62), an upright post (63), a rotating seat (64), a gear (65), a plurality of racks (66), a rotating shaft (67), a speed reducer (68), a motor (69), a sliding block (610) and a guide rail (611), the mounting groove (61) is arranged at the middle position of the upper part of the sliding block (1), the number of the racks (66) is two and is fixed at the bottom of the mounting groove (61), the two racks (66) are symmetrical relative to the symmetry axis of the first feeding assembly (4), the guide rail (611) is fixed at the middle position of the bottom of the mounting groove (61), the guide rail (611) is parallel to the racks (66), the number of the sliding block (610) is a plurality, each sliding block (610) is slidably connected with the guide rail (611), the motor (69) and the speed reducer (68) are arranged at the middle position of the upper part of the sliding block (610), the motor (69) is connected with the speed reducer (68), the two output ends of the motor (69) are respectively connected with the two speed reducers (68) at the two ends of the speed reducers (68) at the two ends (64 respectively arranged at the two ends of the speed reducer (610), the rotary shaft (67) is fixed in a bearing inner ring of the rotary seat (64), one end of the rotary shaft (67) is connected with the output end of the speed reducer (68), the other end of the rotary shaft is fixedly connected with the gear (65), the gear (65) is meshed with the rack (66) mutually, the upright posts (63) are fixed at the middle positions of the upper parts of the sliding blocks (610), each positioning and clamping assembly (2) is arranged at the upper parts of the upright posts (63), the protection plate (62) is arranged at the upper parts of the mounting grooves (61), a gap is formed in the middle position of the protection plate (62), and the upright posts (63) extend upwards from the gap;

the protective plate (62) is provided with scale marks (7), the scale marks (7) are parallel to the symmetry axis of the first feeding component (4), the starting ends of the scale marks (7) are aligned with the side face, facing the first feeding component (4), of the limiting plate (5), and the scale marks (7) are positioned at a gap in the middle of the protective plate (62);

this material loading clamping device sets up one side at longeron welding station, first material loading subassembly and second material loading subassembly are crisscross to be set up in the both ends of base, first material loading subassembly is close with the conveyor of longeron welding station, after the longeron welding is accomplished, on moving it to first material loading subassembly through the conveyor of longeron, first material loading subassembly removes the longeron along direction of transport, stop after the front end touching limiting plate of longeron, limiting plate has limited the position of longeron in its length direction, then place the crossbeam on location clamping assembly by the workman, and fix a position the clamp to the crossbeam, the rethread adjusting part removes location clamping assembly one by one, remove the crossbeam on the relevant position, then transversely remove the longeron through the second material loading subassembly, make the longeron be close to the crossbeam, when the inboard that the longeron is relative is close to the crossbeam both ends, press from both ends at the workman with the longeron through second material loading subassembly, then weld the junction of longeron and longeron.