CN211949643U

CN211949643U - Auxiliary beam and concrete pump truck

Info

Publication number: CN211949643U
Application number: CN201922459441.9U
Authority: CN
Inventors: 谷云辉; 刘小顺; 范书名
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-17
Anticipated expiration: 2029-12-31

Abstract

The utility model provides an auxiliary beam and concrete pump truck, wherein, the auxiliary beam includes first longeron, second longeron and a plurality of crossbeam, and a plurality of crossbeams set up between first longeron and second longeron, and first longeron and second longeron all include roof, riser and bottom plate; among the four of roof, riser, bottom plate and crossbeam, be equipped with a plurality of first through-holes on at least roof or riser or the bottom plate, first longeron and second longeron are all connected with crossbeam detachably through the fastener that inserts first through-hole. Through the technical scheme of the utility model, reduced the deformation and the additional internal stress on auxiliary girder and chassis effectively, and can adjust the annex position on auxiliary girder and the auxiliary girder according to chassis type and size in a flexible way, can also adjust whole car assembly sequence, improved because lack the problem that the chassis leads to production efficiency low.

Description

Auxiliary beam and concrete pump truck

Technical Field

The utility model relates to the technical field, particularly, relate to an auxiliary girder, a concrete pump truck.

Background

The concrete pump truck is an engineering machine for concrete pouring and consists of a chassis, an arm support, a turret, a pumping system, an underframe and accessories thereof. The auxiliary beam is a main body of the underframe and is positioned between the chassis of the concrete pump truck and the pump truck turret; two side surfaces of the auxiliary beam are connected with the chassis through connecting pieces, the chassis is provided with twisted holes, and the auxiliary beam is welded in a matched mode; the secondary beam is welded with the turret, and the diagonal tension beam is welded between the turret and the secondary beam in a matching way. The pumping system, the protective guard, the platform, the main valve group bracket and other accessories are welded on the auxiliary beam; when the whole vehicle is assembled, the chassis needs to be welded firstly in consideration of the safety of hydraulic, electric and other parts, the turret and other parts are welded, the assembly sequence is single, and the production efficiency is influenced when the chassis is lacked.

In addition, the conventional auxiliary beam is welded and formed by adopting a box-type structure, so that the size is inconvenient to adjust, and the adaptability is poor; welding deformation is difficult to control, forming size errors are large, and additional internal stress exists after the welding deformation and the chassis are assembled.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least one of the problems of the prior art or the related art.

In view of this, an object of the present invention is to provide a secondary beam.

Another object of the utility model is to provide a concrete pump truck.

In order to achieve the above object, the present invention provides in a first aspect a secondary beam, including a first longitudinal beam, a second longitudinal beam, and a plurality of cross beams, the plurality of cross beams being disposed between the first longitudinal beam and the second longitudinal beam, the first longitudinal beam and the second longitudinal beam each including a top plate, a vertical plate, and a bottom plate; of the top plate, the vertical plate, the bottom plate and the cross beam, at least the top plate, the vertical plate or the bottom plate is provided with a plurality of first through holes, and the first longitudinal beam and the second longitudinal beam are detachably connected with the cross beam through fasteners inserted into the first through holes, such as bolted connection or riveted connection.

In the technical scheme, the first longitudinal beam and the second longitudinal beam are connected with the cross beam through the fasteners inserted into the first through holes, namely, no hot working exists in the connecting process, the deformation of the auxiliary beam cannot be caused, and additional internal stress cannot be generated; when the whole vehicle is assembled, the assembly sequence can be interchanged, hydraulic, electric, turret and other components can be assembled firstly, and then the chassis is assembled, so that the assembly flexibility is improved, and the production efficiency is improved; in addition, due to the fact that the auxiliary beam is connected through the fastening piece, the size of the auxiliary beam can be adjusted according to specific requirements, and adaptability of the auxiliary beam is improved.

Specifically, by arranging the first longitudinal beam, the second longitudinal beam and the cross beam, and arranging the cross beam between the first longitudinal beam and the second longitudinal beam, the structure enables the secondary beam to bear stress in the longitudinal direction and the transverse direction, and the integral rigidity of the secondary beam is improved; the arrangement of the first through holes is convenient for inserting a fastener so as to connect the first longitudinal beam, the second longitudinal beam and the cross beam to form a whole, the integral rigidity of the secondary beam is ensured, the arrangement of the plurality of first through holes is convenient for adjusting the position and the number of the cross beams according to specific conditions, the integral rigidity of the secondary beam is further improved, and the stress condition of the secondary beam is optimized; in addition, the connecting mode of the fastener is convenient for selecting cross beams with different lengths according to the specific size of the chassis of the vehicle, or gaskets are added between the cross beams and the first longitudinal beams and between the cross beams and the second longitudinal beams, so that the distance between two adjacent cross beams can be adjusted to adapt to the size of the chassis, and the adaptability of the auxiliary beam is improved.

Still need point out, adopt the connected mode of fastener, do not need high temperature heating, also can not produce poisonous and harmful gas, be favorable to optimizing operational environment, reduce working strength and the work degree of difficulty, promote the security of production and processing.

The number of the first through holes is more than that of the fasteners, so that the first through holes at different positions can be selected to connect the first longitudinal beam and the cross beam, the second longitudinal beam and the cross beam according to specific requirements, and the first through holes are uniformly distributed, so that the stress on each part of the secondary beam is uniform, and the position adjustment of the fasteners is facilitated.

In the technical scheme, the first longitudinal beam is H-shaped steel, I-shaped steel or Z-shaped steel, or the first longitudinal beam is formed by connecting two channel steels in a back-to-back manner; and/or the second longitudinal beam is H-shaped steel, I-shaped steel or Z-shaped steel, or the second longitudinal beam is formed by connecting two channel steel in a back-to-back manner.

In any one of the above technical solutions, the vertical plate is provided with a plurality of rows of first through holes along the length direction, and at least part of the first through holes on the vertical plate are uniformly arranged; and/or the top plate is provided with a plurality of rows of first through holes along the length direction, and at least part of the first through holes on the top plate are uniformly distributed; and/or the bottom plate is provided with a plurality of rows of first through holes along the length direction, and at least part of the first through holes on the bottom plate are uniformly distributed.

The utility model discloses technical scheme of second aspect provides a concrete pump truck, include: the chassis comprises a frame, wherein a plurality of second through holes for inserting fasteners are formed in the frame; the secondary beam of any one of the first aspect is arranged at the top of the frame; and the connecting piece is provided with a plurality of third through holes for inserting the fasteners, and the connecting piece is respectively connected with the secondary beam and the chassis through the fasteners.

In this technical scheme, by adopting the secondary beam of any one of the above technical schemes, all beneficial effects of the above technical scheme are achieved, and are not described herein again.

Further, the connecting piece passes through the fastener with auxiliary girder and chassis respectively and is connected, be promptly between auxiliary girder and the chassis not the welding, but adopt the fastener to connect through the connecting piece, hot-working has been avoided like this, make the chassis can be after parts such as hydraulic pressure, electricity assemble the auxiliary girder, be connected with the auxiliary girder again, thereby it is single to improve whole car assembly sequence, influence production efficiency's problem when lacking the chassis, the flexibility and the security of whole car assembly have been promoted, the chassis width is different, can change the crossbeam or increase the gasket and realize the assembly, in addition, can also be according to concrete needs, the relative position between adjustment chassis and the auxiliary girder.

More specifically, a second through hole is formed in the frame of the chassis, and a third through hole is formed in the connecting piece, so that the fastening piece can be conveniently inserted into the first through hole and the third through hole to connect the secondary beam and the connecting piece, and the fastening piece can be conveniently inserted into the second through hole and the third through hole to connect the chassis and the connecting piece, and the purpose that the chassis is connected with the secondary beam through the connecting piece is achieved; the quantity of first through-hole, second through-hole, third through-hole is a plurality ofly, can adjust the position of connecting piece like this according to concrete need, promotes the flexibility of vice roof beam, chassis and connecting piece position each other to be convenient for connecting piece and vice roof beam adapt to the chassis of different grade type, size.

In the above technical scheme, at least part of the third through holes are waist-shaped holes, and the length direction of the waist-shaped holes is the same as the length direction of the secondary beam.

In any one of the above technical solutions, the concrete pump truck further includes: the turret is arranged at the top of the auxiliary beam; the connecting beam is fixedly arranged at the bottom of the turret and is provided with a plurality of fourth through holes for inserting fasteners; a plurality of first through holes are formed in the top plate of the auxiliary beam; the connecting beam is connected with the top plate of the auxiliary beam through a fastener.

In the above technical solution, the concrete pump truck further includes: and one end of the diagonal beam is detachably connected with the turret, and the other end of the diagonal beam is respectively connected with the turret and the auxiliary beam through fasteners.

In the technical scheme, the diagonal draw beam is provided with a telescopic structure, and the telescopic structure is used for adjusting the length of the diagonal draw beam; and a fixed support is arranged at one end of the inclined pull beam connected with the auxiliary beam and is fixed on the top plate of the auxiliary beam through a fastener.

In any one of the above technical solutions, the concrete pump truck further includes: and the pumping system and/or the protective fence and/or the platform and/or the main valve group bracket are respectively connected with the auxiliary beam through a fastener penetrating through the first through hole.

In any one of the above technical solutions, the frame is of a groove-shaped structure, one end of the connecting member is connected to the vertical plate or the bottom plate of the secondary beam, and the other end of the connecting member is connected to the side plate of the groove-shaped structure.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of an assembly structure of a sub-beam and a chassis according to an embodiment of the present invention;

fig. 2 is a partial front view structural schematic diagram of a longitudinal beam according to an embodiment of the present invention;

FIG. 3 is a side view schematic of the structure of FIG. 2;

fig. 4 is a partial front view structural schematic view of a longitudinal beam of another embodiment of the present invention;

FIG. 5 is a side view schematic of the structure of FIG. 4;

fig. 6 is a schematic side view of a stringer according to yet another embodiment of the present invention;

fig. 7 is a schematic perspective view of a concrete pump truck according to an embodiment of the present invention;

fig. 8 is a perspective view of a turret and a connecting beam according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

the concrete pump truck comprises a concrete pump truck body, 10 auxiliary beams, 100a first longitudinal beam, 100b second longitudinal beam, 1000 top plates, 1002 vertical plates, 1004 bottom plates, 102 cross beams, 104 first through holes, 12 vehicle frames, 120 second through holes, 122 web plates, 14 connecting pieces, 140 third through holes, 16 turrets, 160 connecting beams, 162 fourth through holes, 164 diagonal tension beams, 166 fixed supports and 19 fasteners.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings, which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Some embodiments according to the invention are described below with reference to fig. 1 to 8.

As shown in fig. 1, according to the sub-beam 10 of one embodiment of the present invention, the sub-beam 10 includes a first longitudinal beam 100a, a second longitudinal beam 100b and a plurality of cross beams 102, the plurality of cross beams 102 are disposed between the first longitudinal beam 100a and the second longitudinal beam 100b, and each of the first longitudinal beam 100a and the second longitudinal beam 100b includes a top plate 1000, a vertical plate 1002 and a bottom plate 1004; of the top plate 1000, the upright plate 1002, the bottom plate 1004, and the cross beam 102, at least the top plate 1000, the upright plate 1002, or the bottom plate 1004 is provided with a plurality of first through holes 104, and each of the first longitudinal beam 100a and the second longitudinal beam 100b is detachably connected to the cross beam 102 by fasteners 19 inserted into the first through holes 104, such as bolted connection or riveted connection.

In this embodiment, the first longitudinal beam 100a, the second longitudinal beam 100b and the cross beam 102 are connected by the fastener 19 inserted into the first through hole 104, i.e., there is no hot working during the connection process, no deformation of the sub-beam 10 is caused, and no additional internal stress is generated; when the whole vehicle is assembled, the assembly sequence can be interchanged, the hydraulic component, the electric component, the turret 16 and other components can be assembled firstly, and then the chassis is assembled, so that the assembly flexibility is improved, and the production efficiency is improved; in addition, due to the connection through the fastening piece 19, the size of the secondary beam 10 can be adjusted according to specific needs, and the adaptability of the secondary beam 10 is improved.

Specifically, by providing the first longitudinal beam 100a, the second longitudinal beam 100b and the cross beam 102, and providing the cross beam 102 between the first longitudinal beam 100a and the second longitudinal beam 100b, such a structure enables the sub-beam 10 to bear forces in both the longitudinal direction and the transverse direction, and improves the overall rigidity of the sub-beam 10; the arrangement of the first through holes facilitates the insertion of fasteners to connect the first longitudinal beam 100a and the second longitudinal beam 100b, so as to ensure the overall rigidity of the secondary beam 10, and the arrangement of the plurality of first through holes 104 facilitates the adjustment of the position and the number of the cross beams 102 according to specific conditions, so as to further improve the overall rigidity of the secondary beam 10 and optimize the stress condition of the secondary beam 10; in addition, the connection mode of the fastener 19 is convenient for selecting cross beams 102 with different lengths according to the specific size of the chassis of the vehicle, or adding gaskets between the cross beam 102 and the first longitudinal beam 100a and between the cross beam 102 and the second longitudinal beam 100b, so that the distance between two adjacent cross beams 102 can be adjusted to adapt to the size of the chassis, and the adaptability of the secondary beam 10 is improved.

It should also be pointed out that, the connecting mode of the fastening piece 19 is adopted, high-temperature heating is not needed, toxic and harmful gas is not generated, the working environment is favorably optimized, the working strength and the working difficulty are reduced, and the safety of production and processing is improved.

The fastening member 19 includes any one or two of a bolt, a rivet, and a pin.

It can be understood that the number of the first through holes 104 is greater than that of the fasteners 19, so that the first through holes 104 at different positions can be selected to connect the first longitudinal beam 100a and the cross beam 102, and the second longitudinal beam 100b and the cross beam 102 according to specific needs, or a plurality of cross beams 102 can be arranged between the first longitudinal beam 100a and the second longitudinal beam 100b at different positions, and the plurality of first through holes 104 are uniformly distributed, so that the stress is uniformly applied to all positions on the secondary beam 10, and the position adjustment of the fasteners 19 is also facilitated.

Further, as shown in fig. 6, the first longitudinal beam 100a and/or the second longitudinal beam 100b are H-shaped steel; or as shown in fig. 2 and 3, the first longitudinal beam 100a and/or the second longitudinal beam 100b are i-shaped steel; or the first longitudinal beam 100a and/or the second longitudinal beam 100b are Z-shaped steel, or as shown in fig. 4 and 5, the first longitudinal beam 100a and/or the second longitudinal beam 100b are formed by connecting two channel steels in a back-to-back manner, so that compared with the longitudinal beam with a square cross section, the welding amount of the first longitudinal beam 100a and/or the second longitudinal beam 100b can be reduced, the welding deformation can be reduced, the deformation of the secondary beam 10 and the internal welding stress can be reduced, and the material can be saved.

It should be noted that the two channel steels are connected in a back-to-back manner, and can be connected through welding or bolts.

It is understood that the first longitudinal beam 100a and the second longitudinal beam 100b may have the same structure, for example, the first longitudinal beam 100a and the second longitudinal beam 100b are both H-shaped steel or Z-shaped steel; alternatively, for example, the first longitudinal beam 100a may be an H-beam and the second longitudinal beam 100b may be a Z-beam, or the second longitudinal beam 100b may be formed by joining two steel beams back to back.

In some embodiments, a cross beam 102 is disposed between the first longitudinal beam 100a and the second longitudinal beam 100b, which can save materials; in other embodiments, a plurality of cross members 102 are disposed between the first longitudinal member 100a and the second longitudinal member 100b, so that the overall rigidity of the sub-beam 10 can be improved and the deformation can be reduced.

In other embodiments, the vertical plate 1002 is provided with a plurality of rows of first through holes 104 along the length direction, and at least some of the first through holes 104 on the vertical plate 1002 are uniformly arranged; and/or the top plate 1000 is provided with a plurality of rows of first through holes 104 along the length direction, and at least part of the first through holes 104 on the top plate 1000 are uniformly arranged; and/or the bottom plate 1004 is provided with a plurality of rows of first through holes 104 along the length direction, and at least part of the first through holes 104 on the bottom plate 1004 are uniformly arranged.

In this embodiment, a plurality of rows of first through holes are formed in the vertical plate 1002, the top plate 1000 or the bottom plate 1004 along the length direction, so that the fasteners can be inserted into the first through holes at different positions in the length direction according to specific needs, thereby improving the flexibility and convenience of arrangement of the connecting position; the first through holes are uniformly arranged, so that convenience and working efficiency in processing and mounting are improved, and uniformity of stress of the top plate 1000 or the vertical plate 1002 or the bottom plate 1004 after mounting is improved.

As shown in fig. 7, an embodiment of the second aspect of the present invention provides a concrete pump truck 1, including: the chassis comprises a frame 12, wherein a plurality of second through holes 120 for inserting fasteners 19 are formed in the frame 12; the sub-beam 10 of any one of the embodiments of the first aspect described above, provided on the top of the vehicle frame 12; and a connecting member 14 provided with a plurality of third through holes 140 for inserting the fastening members 19, the connecting member 14 being connected to the sub-beam 10 and the chassis, respectively, by the fastening members 19.

In this embodiment, by using the secondary beam 10 of any one of the above embodiments, all the beneficial effects of the above embodiments are achieved, and are not described herein again.

Further, the connecting piece 14 is respectively connected with the auxiliary beam 10 and the chassis through the fastening piece 19, namely the auxiliary beam 10 and the chassis are not welded, but are connected through the connecting piece 14 by the fastening piece 19, so that hot working is avoided, the chassis can be connected with the auxiliary beam 10 after hydraulic, electric and other parts are assembled on the auxiliary beam 10, the problem that the whole vehicle assembly sequence is single, the production efficiency is affected when the chassis is lacked is solved, the flexibility and the safety of the whole vehicle assembly are improved, the cross beam 102 can be replaced or gaskets can be added to realize the assembly when the chassis is different in width, in addition, the relative position between the chassis and the auxiliary beam 10 can be adjusted according to specific needs.

It should be noted that the connection member 14 and the chassis are connected by the fastening member 19, which means that the connection member 14 and the frame 12 of the chassis are connected by the fastening member 19.

As shown in fig. 1 and 7, more specifically, a part of the first through hole 104 of the sub-beam 10 is located at the bottom, or on the bottom plate 1004 of the sub-beam 10, that is, on the bottom plate 1004 of the first longitudinal beam 100a or the second longitudinal beam 100 b. The frame 12 of the chassis is provided with a second through hole 120, and the connecting piece 14 is provided with a third through hole 140, so that the fastening piece 19 can be conveniently inserted into the first through hole 104 and the third through hole 140 to connect the secondary beam 10 and the connecting piece 14, and the fastening piece 19 can be conveniently inserted into the second through hole 120 and the third through hole 140 to connect the chassis and the connecting piece 14, thereby realizing the purpose that the chassis is connected with the secondary beam 10 through the connecting piece 14; the number of the first through holes 104, the second through holes 120 and the third through holes 140 is plural, so that the position of the connecting member 14 can be adjusted according to specific needs, and the flexibility of the mutual positions of the secondary beam 10, the chassis and the connecting member 14 is improved, thereby facilitating the adaptation of the connecting member 14 and the secondary beam 10 to different types and sizes of chassis.

As shown in fig. 1, in the above embodiment, at least a portion of the third through holes 140 are waist-shaped holes, and the length direction of the waist-shaped holes is the same as the length direction of the secondary beam 10, so that fine adjustment of the position of the connecting member 14 is facilitated, the flexibility of connection between the secondary beam 10 and the chassis is improved, additional internal stress after assembly can be reduced, and structural deformation caused by assembly can be reduced.

As shown in fig. 8, in any of the above embodiments, the concrete pump truck 1 further includes: a turret 16 provided on the top of the sub-beam 10; a connecting beam 160 fixed to the bottom of the turret 16, the connecting beam 160 having a plurality of fourth through holes 162 for inserting fasteners 19; a plurality of first through holes 104 are formed in the top plate 1000 of the secondary beam 10; the connecting beam 160 is connected with the top plate 1000 of the secondary beam 10 through the fastener 19, that is, the turret 16 is connected with the secondary beam 10 through the connecting beam 160 and the fastener 19, so that deformation caused by hot processing such as welding is avoided, additional internal stress after the secondary beam 10, the turret 16 and the connecting beam 160 are assembled is effectively reduced, the assembling sequence can be properly adjusted, and the assembling flexibility and convenience are improved.

The top plate 1000 of the sub-beam 10, i.e., the top plate 1000 of the first longitudinal beam 100a or the second longitudinal beam 100 b.

In the above embodiment, the concrete pump truck 1 further includes: and the diagonal tension beam 164, one end of which is detachably connected with the turret 16, and the other end of which is connected with the secondary beam 10 through a fastener, so that the diagonal tension beam 164 can rotate properly, the convenience of assembling the turret 16 and the secondary beam 10 is increased, the welding stress among the diagonal tension beam 164, the turret 16 and the secondary beam 10 is reduced, and the deformation of the structure is reduced.

Further, the diagonal draw beam 164 is provided with a screw pair as a telescopic structure to adjust the length of the diagonal draw beam 164 and reduce the internal stress between the secondary beam 10 and the turret 16.

The end of the diagonal draw beam 164 connected with the secondary beam 10 is provided with a fixed support 166, and the fixed support 166 is fixed on the top plate 1000 of the secondary beam 10 through a fastener 19, so that the stability and reliability of the diagonal draw beam connection are improved, and the position of the fixed support 166 is adjustable.

It is understood that the fixing bracket 166 may be fixed to the top plate 1000 of the sub-beam 10 by welding.

In other embodiments, any one of a pneumatic cylinder, a hydraulic cylinder, and a spring may be used instead of the screw pair.

In any of the above embodiments, the concrete pump truck 1 further includes: the pumping system and/or the guard rail and/or the platform and/or the main valve block support are respectively connected with the secondary beam 10 through the fastening piece 19 penetrating through the first through hole 104, so that the welding connection between the pumping system and other components and the secondary beam 10 can be effectively avoided, the welding deformation and the additional internal stress of the secondary beam 10 can be reduced, the position of the pumping system and/or the guard rail and/or the platform and/or the main valve block support can be flexibly adjusted according to different chassis types or sizes, and the assembly flexibility and the assembly efficiency can be improved.

In some embodiments, the frame 12 has a groove structure, one end of the connecting member 14 is connected to the vertical plate 1002 or the bottom plate 1004 of the secondary beam 10, and the other end of the connecting member 14 is connected to the web 122 of the groove structure, which is simple and flexible in connection position.

As shown in fig. 7, a concrete pump truck 1 according to an embodiment of the present application includes a sub-girder 10, a chassis, a turret 16, an underframe, etc.; the auxiliary beam 10 is a main body of the underframe and is positioned between the chassis of the concrete pump truck 1 and the turret 16; the two side surfaces of the secondary beam 10, namely a first longitudinal beam 100a and a second longitudinal beam 100b are connected with the frame 12 of the chassis through a connecting piece 14 by a fastener 19; the secondary beam 10 is connected to the turret 16 by fasteners 19; a diagonal tension beam 164 is arranged between the turret 16 and the secondary beam 10, and the diagonal tension beam 164 is respectively connected with the turret 16 and the secondary beam 10 through fasteners 19; in addition, the pumping system, the guard rail, the platform, the main valve block support, and other accessories of the concrete pump truck 1 are mounted on the sub-girder 10 by fasteners 19.

Further, the secondary beam 10 includes a first longitudinal beam 100a, a second longitudinal beam 100b and a cross beam 102, as shown in fig. 6, the first longitudinal beam 100a and the second longitudinal beam 100b both adopt H-shaped steel, a plurality of first through holes 104 are reserved on the first longitudinal beam and the second longitudinal beam, the cross beam 102 is assembled to reduce welding, only a local reinforcing rib part of the whole secondary beam 10 is welded, and deformation is small.

The plurality of first through holes 104 are uniformly arranged, and all the underframe accessories connected with the secondary beam 10 are assembled by using the fasteners 19, and the assembly positions of the accessories are adjustable according to different types or sizes of the chassises.

The plurality of first through holes 104 of the sub-beam 10 are formed so that the fastening members 19 can be inserted to be assembled with the chassis by the fastening members 19 and the connecting members 14, and the plurality of first through holes 104 are formed so that the position of the connecting members 14 can be adjusted according to the size of the chassis.

The connection between the secondary beam 10 and the fixed turret 16 is assembled using fasteners 19, and the diagonal tension beams 164 connecting the secondary beam 10 and the turret 16 are also assembled using fasteners 19, the length of which can be adjusted.

All other parts related to the secondary beam 10, such as a pumping system, a protective guard, a platform, a main valve group bracket and the like, are assembled by using the fasteners 19, and the secondary beam 10, the turret 16, the arm support, hydraulic pressure, electric power and the like can be assembled with the chassis after being installed, so that the problem of low production efficiency caused by the shortage of the chassis is solved.

As shown in fig. 8, in particular, the secondary beam 10 is bolted to the turret 16. One end of the diagonal draw beam 164 is connected with the fixed turret 16, the other end of the diagonal draw beam 164 is connected with the auxiliary beam 10, and both ends of the diagonal draw beam are fixed by pin shafts. The chassis is connected with the secondary beam 10 through a connecting piece 14, the connecting piece 14 is fixed with the chassis through bolts, and the connecting piece 14 is fixed with the secondary beam 10 through bolts.

The bottom of the fixed turret 16 is welded with a connecting beam 160, the connecting beam 160 is provided with a plurality of fourth through holes 162, the top plates of the first longitudinal beam 100a and the second longitudinal beam 100b of the secondary beam 10 are provided with a plurality of first through holes 104, and the bolt fixation between the secondary beam 10 and the fixed turret 16 is realized through the first through holes 104 and the fourth through holes 162. The length of the diagonal tension beam 164 is adjustable by a thread pair to avoid assembly problems caused by manufacturing errors. When the connecting piece 14 is assembled, the connecting piece 14 is a waist-shaped hole or an oblong hole along the length direction of the secondary beam 10, so that the position of the connecting piece 14 can be adjusted finely, a plurality of first through holes 104 are formed in the first longitudinal beam 100a and the second longitudinal beam 100b, the installation positions of different chassis can be adjusted, and an adjusting gasket can be added along the length direction of the cross beam 102 to adjust the distance between the first longitudinal beam 100a and the second longitudinal beam 100 b.

The concrete pump truck of the embodiment has the following beneficial effects;

1) the auxiliary beam is assembled and molded, so that the skill requirement of workers is reduced, and the cross beam can be replaced according to different widths of the chassis to realize flexible assembly;

2) the first longitudinal beam and the second longitudinal beam of the auxiliary beam are made of H-shaped national standard steel, so that the welding amount is reduced and the deformation is small compared with the existing square section;

3) the auxiliary beam and the chassis are assembled and molded through the connecting piece, so that the assembly welding is avoided, the position is adjustable, and the adaptability is better;

4) the auxiliary beam and the fixed turret are assembled and formed, meanwhile, the inclined pull beam is also assembled and the length of the inclined pull beam can be adjusted, so that the auxiliary beam and the fixed turret are prevented from being welded, and the increased internal stress caused by deformation of the auxiliary beam is reduced;

5) the whole vehicle assembly process is flexible, assembly can be carried out without a chassis, and low production efficiency or shutdown caused by lack of the chassis is avoided.

The technical scheme of the utility model is explained in detail above in combination with the accompanying drawings, through the utility model discloses a technical scheme has reduced the deformation and the additional internal stress of parts such as auxiliary girder, chassis of concrete pump truck effectively, and can adjust the annex position on auxiliary girder and the auxiliary girder according to chassis type and size in a flexible way, can also adjust whole car assembly sequence, has improved because lack the problem that the chassis leads to production efficiency to be low.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A secondary beam, the secondary beam (10) comprising a first longitudinal beam (100a), a second longitudinal beam (100b) and a plurality of cross beams (102), the plurality of cross beams (102) being arranged between the first longitudinal beam (100a) and the second longitudinal beam (100b), characterized in that,

the first longitudinal beam (100a) and the second longitudinal beam (100b) comprise a top plate (1000), a vertical plate (1002) and a bottom plate (1004);

among the four of the top plate (1000), the vertical plate (1002), the bottom plate (1004) and the cross beam (102), at least the top plate (1000), the vertical plate (1002) or the bottom plate (1004) is provided with a plurality of first through holes (104), and the first longitudinal beam (100a) and the second longitudinal beam (100b) are detachably connected with the cross beam (102) through fasteners (19) inserted into the first through holes (104).

2. The secondary beam of claim 1,

the first longitudinal beam (100a) is H-shaped steel, I-shaped steel or Z-shaped steel, or the first longitudinal beam (100a) is formed by connecting two channel steels in a back-to-back manner; and/or

The second longitudinal beam (100b) is H-shaped steel, I-shaped steel or Z-shaped steel, or the second longitudinal beam (100b) is formed by connecting two channel steels in a back-to-back mode.

3. The secondary beam according to claim 1 or 2,

the vertical plate (1002) is provided with a plurality of rows of first through holes (104) along the length direction, and at least part of the first through holes (104) on the vertical plate (1002) are uniformly distributed; and/or

The top plate (1000) is provided with a plurality of rows of first through holes (104) along the length direction, and at least part of the first through holes (104) on the top plate (1000) are uniformly arranged; and/or

The bottom plate (1004) is provided with a plurality of rows of the first through holes (104) along the length direction, and at least part of the first through holes (104) on the bottom plate (1004) are uniformly arranged.

4. A concrete pump truck, characterized by comprising:

the chassis comprises a frame (12), wherein a plurality of second through holes (120) for inserting fasteners (19) are formed in the frame (12);

the secondary beam (10) of any one of claims 1-3, disposed atop the frame (12);

a connecting member (14) provided with a plurality of third through holes (140) for inserting fasteners (19), the connecting member (14) being connected to the sub-beam (10) and the chassis, respectively, by fasteners (19).

5. The concrete pump truck as claimed in claim 4,

at least part of the third through holes (140) are waist-shaped holes, and the length direction of the waist-shaped holes is the same as the length direction of the auxiliary beam (10).

6. The concrete pump truck as claimed in claim 4 or 5, further comprising:

a turret (16) provided on the top of the secondary beam (10);

the connecting beam (160) is fixedly arranged at the bottom of the turret (16), and a plurality of fourth through holes (162) for inserting fasteners (19) are formed in the connecting beam (160);

a plurality of first through holes (104) are formed in a top plate (1000) of the auxiliary beam (10);

the connecting beam (160) is connected with the top plate (1000) through a fastener (19).

7. The concrete pump truck as claimed in claim 6, further comprising:

and one end of the diagonal beam (164) is detachably connected with the turret (16), and the other end of the diagonal beam (164) is connected with the auxiliary beam (10) through a fastener (19).

8. The concrete pump truck as claimed in claim 7,

the inclined straining beam (164) is provided with a telescopic structure, and the telescopic structure is used for adjusting the length of the inclined straining beam (164);

and one end of the diagonal draw beam (164) connected with the secondary beam (10) is provided with a fixed support (166), and the fixed support (166) is fixed on a top plate (1000) of the secondary beam (10) through a fastener (19).

9. The concrete pump truck as claimed in claim 4 or 5, further comprising:

a pumping system and/or a guard rail and/or a platform and/or a main valve group support, respectively connected with the secondary beam (10) through a fastener (19) passing through the first through hole (104).

10. The concrete pump truck as claimed in claim 4 or 5,

the frame (12) is of a groove-shaped structure, one end of the connecting piece (14) is connected to a vertical plate (1002) or a bottom plate (1004) of the secondary beam, and the other end of the connecting piece (14) is connected to a web plate (122) of the groove-shaped structure.