CN111775644A

CN111775644A - Thrust rod assembly, balanced suspension and vehicle

Info

Publication number: CN111775644A
Application number: CN202010799361.2A
Authority: CN
Inventors: 陈康; 曾源
Original assignee: Sany Special Vehicle Co Ltd
Current assignee: Sany Special Vehicle Co Ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-10-16

Abstract

The invention provides a thrust rod assembly, a balanced suspension and a vehicle. The thrust rod assembly comprises a first rod body, one end of the first rod body is rotatably connected with the drive axle, the connection point of the first rod body is close to the frame longitudinal beam on one side of the vehicle, and the other end of the first rod body is connected with the frame cross beam of the vehicle; and one end of the second rod body is rotatably connected with the drive axle, the connecting point is close to the frame longitudinal beam on the other side of the vehicle, and the other end of the second rod body is connected with the frame cross beam, wherein one end of the first rod body connected with the frame cross beam is close to one end of the second rod body connected with the frame cross beam, and is positioned at the position close to the middle part of the frame cross beam. According to the technical scheme, the occupied space above the drive axle can be reduced, the interference of the vehicle caused by the jumping of the drive axle in the driving process can be prevented only by reserving a small space above the drive axle, the overall height of the vehicle can be reduced, the gravity center of the vehicle is lowered, and the stability and the safety of the vehicle are improved.

Description

Thrust rod assembly, balanced suspension and vehicle

Technical Field

The application relates to the technical field of vehicle suspensions, in particular to a thrust rod assembly, a balance suspension and a vehicle.

Background

The balance suspension of a vehicle is an elastic device for connecting a vehicle frame and an axle, and is mainly used for alleviating the impact transmitted to the vehicle frame from an uneven road surface. At present, the part of an upper thrust rod of a balance suspension connected with a drive axle is mostly positioned in the middle of the drive axle and above the drive axle, however, the middle of the drive axle is usually provided with a differential mechanism, a main reducer and other parts, and the space above the drive axle is also occupied; because the vehicle can take place to beat at the in-process transaxle that traveles, for avoiding producing and interfering, need reserve great space in the top at transaxle middle part, consequently, current last distance rod connected mode will lead to the increase of the overall height of vehicle, the installation of the part above the transaxle of being not convenient for, and make the vehicle focus rise, be unfavorable for the stability of vehicle, especially to concrete pump truck or other engineering vehicle, stability descends and will lead to the vehicle to take place to turn on one's side in the course of the work, the risk of accidents such as topple rises, there is the potential safety hazard.

Disclosure of Invention

According to an embodiment of the present invention, it is intended to improve at least one of technical problems existing in the prior art or the related art.

To this end, it is an object according to an embodiment of the present invention to provide a thrust rod assembly.

It is another object of embodiments according to the present invention to provide a counterbalanced suspension.

It is a further object of an embodiment according to the present invention to provide a vehicle.

To achieve the above object, an embodiment according to a first aspect of the present invention provides a thrust rod assembly for a transaxle of a vehicle, including: one end of the first rod body is rotatably connected with the drive axle, the connection point is close to a frame longitudinal beam on one side of the vehicle, and the other end of the first rod body is connected with a frame cross beam of the vehicle; one end of the second rod body is rotatably connected with the drive axle, the connection point is close to the frame longitudinal beam on the other side of the vehicle, and the other end of the second rod body is connected with the frame cross beam; wherein, the end of the first rod body connected with the frame cross beam and the end of the second rod body connected with the frame cross beam are close to each other and are positioned at the position close to the middle part of the frame cross beam.

According to an embodiment of the first aspect of the present invention, the thrust rod assembly includes a first rod and a second rod, one end of the first rod is rotatably connected to the drive axle, and a connection point with the drive axle is close to a frame longitudinal beam on one side of the vehicle, and the other end of the first rod is connected to a frame cross beam of the vehicle. One end of the second rod body is rotatably connected with the drive axle, a connecting point of the second rod body and the drive axle is close to a frame longitudinal beam on the other side of the vehicle, and the other end of the second rod body is connected with a frame cross beam of the vehicle. One end of the first rod body and one end of the second rod body can rotate relatively to the drive axle in a small amplitude. The frame longitudinal beams on the two sides of the vehicle are respectively positioned at the two ends of the drive axle and are oppositely arranged. The end of the first rod body connected with the frame cross beam is close to the end of the second rod body connected with the frame cross beam, and is positioned at the position close to the middle part of the frame cross beam. The one end that the transaxle was connected to the first body of rod and the one end that the transaxle was connected to the second body of rod are located the position that is close to the frame cross beam of both sides on the transaxle respectively to make the first body of rod and the second body of rod avoid the middle part position of transaxle, thereby avoid installing the part at the transaxle middle part, and need not to be connected with the protruding structure at transaxle middle part. Through the mounting height who reduces the distance rod subassembly, can reduce the space above the transaxle and occupy, the transaxle top only needs reserve less space and just can prevent that the vehicle from producing because the transaxle is beated and interfering at the in-process of traveling to reduce the whole height of vehicle, made the focus of vehicle descend, promoted the stability and the security of vehicle. In addition, the height of the thrust rod assembly is reduced, so that the thrust rod assembly is located at the bottom of the frame longitudinal beam, the installation is convenient, the space inside the frame longitudinal beam is reserved, and the pipeline arrangement of a circuit gas circuit is facilitated. The middle part of the frame cross beam is positioned at the center line of the frame cross beam in the width direction of the vehicle.

It can be understood that, in order to install devices such as main reducer and differential mechanism at the transaxle, the axle housing middle part of transaxle is equipped with the great protruding structure of volume more, for example the axle package, can lead the whole height that increases the transaxle, if protruding structure top is located to the position of being connected of thrust pole subassembly and transaxle, will further increase the height of vertical direction, protruding structure directly bears the power of thrust pole subassembly transmission simultaneously, leads to protruding structure to damage easily. Engineering vehicles such as concrete pump truck are in the course of the work, because operational environment is comparatively complicated, consequently, have higher requirement to the stability and the security of vehicle, and this scheme can promote the stability and the security of vehicle.

In addition, the thrust rod assembly in the above technical solution provided according to the embodiment of the present invention may further have the following additional technical features:

in the above technical scheme, one end of the first rod body connected with the frame cross beam is connected with one end of the second rod body connected with the frame cross beam, and the first rod body and the second rod body are symmetrically arranged in the width direction of the vehicle.

In this technical scheme, the one end of connecting the frame crossbeam through setting up the first body of rod is connected with the one end of connecting the frame crossbeam through the second body of rod, can make the first body of rod and the second body of rod be connected with the frame crossbeam jointly, and in the direction by the frame crossbeam to the transaxle, the first body of rod separates to the both sides of vehicle gradually with the second body of rod, form the structure of loudspeaker form, when taking place the ascending relative displacement of length direction between frame and transaxle, perhaps when taking place the ascending relative displacement of width direction, it is spacing all to pass through the distance rod subassembly, with the relative displacement volume between reduction frame and the transaxle, thereby prevent the tire, wheel hub etc. from taking place to interfere or rub with the frame, in order to reduce wearing and tearing. Through setting up the first body of rod and the symmetrical setting of second body of rod in the width direction of vehicle, can make the first body of rod and the even atress of second body of rod, can make the vehicle keep balance in width direction or length direction simultaneously, prevent to incline to one side. The first rod body and the second rod body can form an approximate V-shaped structure, so that the tire can be well laterally and longitudinally positioned, abnormal abrasion of the tire is avoided, and the drive axle has good axle load balancing capacity.

In the above technical solution, the thrust rod assembly further includes: the connecting portion is connected with the frame cross beam, one end of the connecting portion in the width direction of the vehicle is fixedly connected with the first rod body, and the other end of the connecting portion in the width direction of the vehicle is fixedly connected with the second rod body.

In this technical scheme, through setting up the connecting portion that are connected with the frame cross beam, connecting portion are connected with the first body of rod and the second body of rod respectively along the width direction's of vehicle both ends for the first body of rod and the second body of rod are connected with the frame cross beam through connecting portion, can be convenient for be connected between the first body of rod and the second body of rod, and do benefit to the structure of simplifying the connection position, reduce the processing degree of difficulty. Specifically, connecting portion can extend along the width direction of vehicle, approximate in-line structure, and the both ends of connecting portion are connected simple structure with the other end of the first body of rod and the other end of the second body of rod respectively. The connecting portion may also be of an approximately V-shaped configuration, with the opening facing the transaxle.

In the above technical scheme, the transaxle middle part is equipped with hollow protruding structure, the thrust rod subassembly still includes: the first connecting piece is fixedly connected to one end, close to the frame longitudinal beam, of the protruding structure, and the first connecting piece is rotatably connected with one end, far away from the connecting part, of the first rod body; the second connecting piece is fixedly connected to one end, close to the other frame longitudinal beam, of the protruding structure, and the second connecting piece is rotatably connected with one end, far away from the connecting part, of the second rod body; and the third connecting piece is fixedly connected to the middle part of the frame cross beam and is rotationally connected with the connecting part.

In the technical scheme, a hollow bulge structure is arranged in the middle of the drive axle and used for mounting components such as a main speed reducer, a differential and the like. The first connecting piece and the second connecting piece are fixed on the drive axle and connected with each other and are respectively positioned on the shoulder parts of the bulge structures, specifically, the first connecting piece is fixedly connected to one end, close to the frame longitudinal beam, of the bulge structures, and one end, far away from the connecting part, of the first rod body is rotatably connected with the first connecting piece; the second connecting piece is fixedly connected to one end, close to the other frame longitudinal beam, of the protruding structure, and one end, far away from the connecting portion, of the second rod body is rotatably connected with the second connecting piece. Wherein, first body of rod and second body of rod all can carry out certain amplitude for the transaxle and rotate. The third connecting piece is fixed at the middle part of frame crossbeam, and rotate with connecting portion and be connected, connecting portion can carry out the rotation of certain range on vertical direction, thereby make and produce certain relative displacement between transaxle and the frame in the direction of height of vehicle, when taking place the run-out of vertical direction at the transaxle, rotate through the first body of rod and the second body of rod and connecting portion and suit with the motion of transaxle, prevent that the frame is whole to take place to run-out along with the transaxle, be favorable to improving the overall stability of vehicle.

In the above technical scheme, the one end that frame cross member was connected to the first body of rod and the one end that frame cross member was connected to the second body of rod, there is the interval in the width direction of vehicle, and the interval is not more than the interval threshold value.

In this technical scheme, there is the interval through the one end that sets up the one end that the frame crossbeam is connected to the first body of rod and the one end that the frame crossbeam is connected to the second body of rod on the width direction of vehicle for do not lug connection between the first body of rod and the second body of rod, mutual independence between the first body of rod and the second body of rod promptly, and be connected with the frame crossbeam respectively, at this moment, can simplify the structure of the first body of rod and the second body of rod, for example, the first body of rod and the second body of rod can adopt straight thrust rod, be favorable to reducing the processing degree of difficulty of the first body of rod and the second body of rod, and cost is reduced. Through setting up the interval and being less than or equal to the interval threshold value to make the form of setting up of first body of rod, the second body of rod still keep by frame crossbeam to keeping leaning on to drive axle in the direction gradually to both sides part, can bear certain thrust in the length direction and the width direction homoenergetic of vehicle with the assurance first body of rod and the second body of rod. Furthermore, the distance threshold value is smaller than the maximum distance between the first rod body and the second rod body in the width direction, so that the shape formed by the first rod body, the second rod body, the frame cross beam and the drive axle is close to a triangular or trapezoidal structure, the stress conduction of the thrust rod assembly on two sides is relatively uniform, and the balance stress is facilitated.

In the above technical solution, a first included angle is formed between the first rod body and the second rod body, and the angle range of the first included angle is 18 ° to 25 °.

In this technical scheme, the first body of rod forms first contained angle between the second body of rod, the angle scope through setting up first contained angle is 18 to 25 to make the first body of rod and the second body of rod and the middle part that the transaxle is connected the position and can avoid the transaxle, with the whole height that reduces the transaxle, simultaneously, can make the whole thrust bar subassembly that bears thrust simultaneously on vehicle length direction and width direction, realize the conduction of power in a plurality of directions, with balanced atress, be favorable to improving the stability of vehicle. It can be understood that if the first included angle is too small, the connection parts of the first rod body and the second rod body with the drive axle are close to the middle part of the drive axle, which is not beneficial to connection, and the capability of the whole thrust rod assembly for bearing thrust in the width direction of the vehicle is reduced, which is not beneficial to limiting the relative displacement of the drive axle and the vehicle frame in the width direction; if first contained angle is too big, lead to first body of rod and second body of rod and solebar to take place to interfere easily, can reduce the whole ability that bears thrust in the length direction of vehicle of distance rod subassembly simultaneously, be unfavorable for restricting the relative displacement in length direction between transaxle and the frame.

In the above technical scheme, the height of the connecting portion of the first rod body and the drive axle and the height of the connecting portion of the second rod body and the drive axle are not higher than the maximum height of the drive axle.

In this technical scheme, the position height of being connected through setting up the first body of rod and transaxle is not higher than the maximum height of transaxle, the position height that the second body of rod is connected with the transaxle simultaneously also is not higher than the maximum height of transaxle, make the mounting height of thrust bar subassembly on the transaxle be no longer than the maximum mounting height at the position of installing other parts on the transaxle, in order to reduce the occupation to transaxle top space as far as possible, be favorable to reducing the whole focus of vehicle, improve the stability and the security of vehicle.

An embodiment according to a second aspect of the invention provides a counterbalanced suspension comprising: the balance shaft is connected to the bottom of a frame cross beam of the vehicle and extends to two sides of a frame longitudinal beam of the vehicle along the width direction of the vehicle; the two leaf spring assemblies are respectively arranged on the outer sides of the two frame longitudinal beams of the vehicle and are rotatably connected with the balance shaft, and two ends of each leaf spring assembly along the length direction of the frame longitudinal beam are respectively connected with two drive axles adjacent to the vehicle; the four lower thrust rods are arranged below a drive axle of the vehicle and are respectively positioned at two sides of the vehicle in the width direction, the two lower thrust rods at the same side are respectively arranged at the front side and the rear side of the balance shaft, and two ends of each lower thrust rod are respectively connected with the balance shaft and one drive axle; the thrust rod assemblies in any one of the two embodiments of the first aspect are arranged above the drive axle, one end, close to the second rod, of the first rod in each thrust rod assembly is connected with the frame cross beam, the other end of the first rod is connected to a position, close to one frame longitudinal beam, on the drive axle, and the other end of the second rod is connected to a position, close to the other frame longitudinal beam, on the drive axle; one thrust rod assembly is connected with a drive axle positioned on the front side of the frame cross beam, and the other thrust rod assembly is connected with a drive axle positioned on the rear side of the frame cross beam.

According to an embodiment of the second aspect of the present invention, the counterbalanced suspension comprises a counterbalancing shaft, two leaf spring assemblies, four lower thrust rods and two thrust rod assemblies according to any of the embodiments of the first aspect described above. The balance shaft is connected with the bottom of a frame cross beam of the vehicle and extends to two sides of a frame longitudinal beam of the vehicle along the width direction of the vehicle to be used as a mounting base body of the balance suspension, so that other components can be mounted and connected conveniently. The two leaf spring assemblies are respectively arranged on the outer sides of two frame longitudinal beams of the vehicle and are rotatably connected with the balance shaft, and two ends of each leaf spring assembly along the length direction of the frame longitudinal beams are respectively connected with two drive axles adjacent to the vehicle; and the four lower thrust rods are arranged below a drive axle of the vehicle and are mainly used for bearing the thrust in the length direction of the vehicle. Specifically, two lower thrust rods are respectively arranged on two sides in the width direction of the vehicle, the two lower thrust rods on the same side are respectively arranged on the front side and the rear side of the balance shaft, and two ends of each lower thrust rod are respectively connected with the balance shaft and a drive axle so as to limit the relative displacement between the drive axle and the frame cross beam in the length direction of the vehicle. The two thrust rod assemblies are arranged above the drive axle; one end of each thrust rod component, which is close to the first rod body and the second rod body, is connected with the frame cross beam, one end of each first rod body, which is far away from the frame cross beam, is connected to the position, which is close to one frame longitudinal beam, on the driving axle, and one end of each second rod body, which is far away from the frame cross beam, is connected to the position, which is close to the other frame longitudinal beam, on the driving axle, so that the thrust is borne in the length direction and the width direction of. One thrust rod component is connected with one drive axle positioned on the front side of the frame cross beam, and the other thrust rod component is connected with one drive axle positioned on the rear side of the frame cross beam so as to simultaneously act on two adjacent drive axles and keep balance between the two drive axles and the frame. The balance suspension can restrain vehicle vibration and impact force caused by uneven road surface, has good axle load balance capability, wherein, the connecting position of the thrust rod component and the driving axle avoids the middle part of the driving axle, is favorable for reducing the overall height of the vehicle, and can promote the stability and the safety of the vehicle. In addition, the connecting part of the thrust rod assembly and the frame cross beam can be designed to be as high as the supporting structure of the balance shaft, so that the supporting structure of the balance shaft and the frame cross beam are integrated into a whole, the whole stress distribution of the frame is favorably improved, and the whole strength of the frame is further improved.

In addition, the balanced suspension in this solution also has all the beneficial effects of the thrust rod assembly in the embodiment of the first aspect, and will not be described herein again.

An embodiment according to a third aspect of the invention provides a vehicle comprising: a vehicle body; the frame comprises two frame longitudinal beams and a plurality of frame cross beams, the frame cross beams are arranged at intervals along the length direction of the frame longitudinal beams, and two ends of each frame cross beam are fixedly connected with the two frame longitudinal beams; the at least two drive axles are arranged below the frame and are arranged at intervals along the length direction of the frame longitudinal beam; the counterbalanced suspension of the embodiment of the second aspect is connected to two transaxles and a frame cross member located between the two transaxles.

According to an embodiment of the third aspect of the present invention, a vehicle comprises a vehicle body, a frame, at least two drive axles and the balanced suspension of the second aspect. The frame includes two solebars and a plurality of solebars, and a plurality of solebars set up along solebar's length direction interval, and the both ends and two solebar fixed connection of every solebar to form frame construction for bear the automobile body. The drive axle is arranged below the frame longitudinal beam and the frame cross beam, arranged at intervals along the length direction of the frame longitudinal beam, connected with the drive wheel and used for driving the vehicle body to run. The balance suspension is connected with the two drive axles and a frame cross beam positioned between the two drive axles so as to limit the relative displacement between the drive axles and the frame, and the stress can be buffered in the height direction of the vehicle body, so that the vehicle has better balance, stability and safety. In addition, the vehicle in the present solution also has all the beneficial effects of the balanced suspension in the embodiment of the second aspect, and details are not repeated here.

In the technical scheme, the vehicle is a concrete pump vehicle.

In the technical scheme, the boom device needs to be unfolded in the working process of the concrete pump truck to pump concrete to a target position, so that the overall gravity center of the concrete pump truck is raised, the risk that the concrete pump truck turns over or topples over due to the raised gravity center is increased due to the complex working environment, and potential safety hazards are generated, so that the requirements on the stability and the balance of the concrete pump truck are high. Meanwhile, the height of the reserved space above the drive axle is reduced, the setting angle of the pumping cylinder above the drive axle can be reduced, the height of the reserved space can be saved by more than 140mm through measurement, the setting angle of the pumping cylinder can be reduced to 1.8 degrees from 9 degrees, the pumping resistance is reduced, the pumping efficiency can be improved by about 20 percent, the construction efficiency can be effectively improved, and the construction cost is reduced.

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

Drawings

The above and/or additional aspects and advantages of embodiments according to the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates an assembly schematic of a thrust rod assembly according to one embodiment of the present invention;

FIG. 2 illustrates an assembly schematic of a thrust rod assembly according to one embodiment of the present invention;

FIG. 3 illustrates an assembly schematic of a thrust rod assembly according to one embodiment of the present invention;

FIG. 4 illustrates an assembly schematic of a thrust rod assembly according to one embodiment of the present invention;

FIG. 5 illustrates an assembly schematic of a thrust rod assembly according to one embodiment of the present invention;

FIG. 6 illustrates an assembly schematic of a thrust rod assembly according to one embodiment of the present invention;

FIG. 7 illustrates an assembly schematic of a thrust rod assembly according to an embodiment of the present invention;

FIG. 8 illustrates an assembly schematic of a thrust rod assembly according to an embodiment of the present invention;

FIG. 9 illustrates an assembly schematic of a thrust rod assembly according to an embodiment of the present invention;

FIG. 10 illustrates an assembly schematic of a thrust rod assembly according to an embodiment of the present invention;

FIG. 11 illustrates an assembled schematic view of a counterbalanced suspension according to one embodiment of the present invention;

FIG. 12 illustrates an assembled schematic view of a counterbalanced suspension according to one embodiment of the present invention;

FIG. 13 shows a schematic block diagram of a vehicle according to one embodiment of the invention.

Wherein, the correspondence between the reference numbers and the components in fig. 1 to 13 is as follows:

1 balanced suspension, 11 thrust rod assemblies, 111 first rod bodies, 112 second rod bodies, 113 connecting parts, 114 first connecting parts, 115 second connecting parts, 116 third connecting parts, 12 balanced shafts, 13 leaf spring assemblies, 14 lower thrust rods, 2 vehicles, 21 vehicle bodies, 22 frames, 221 frame longitudinal beams, 222 frame cross beams, 23 drive axles and 231 bulge structures.

Detailed Description

In order that the above objects, features and advantages of embodiments in accordance with the present invention can be more clearly understood, embodiments in accordance with the present invention are described in further detail below with reference to the accompanying drawings and detailed description. 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 embodiments according to the invention, however, the solution according to the invention may be implemented in other ways than those described herein, and therefore the scope of protection of the present application is not limited by the embodiments disclosed below.

Thrust rod assemblies, counterbalanced suspensions and vehicles according to some embodiments of the present invention are described below with reference to fig. 1-13.

Example one

The present embodiment provides a thrust rod assembly 11 for a transaxle 23 of a vehicle, including a first rod 111 and a second rod 112. As shown in fig. 1, the frame 22 of the vehicle includes a frame longitudinal beam 221 and a frame cross beam 222, and the frame longitudinal beams 221 on both sides are respectively located at both ends of the drive axle 23 and are oppositely arranged. The two ends of the first rod 111 are respectively connected with the drive axle 23 and the frame cross member 222, and the two ends of the second rod 112 are also respectively connected with the drive axle 23 and the frame cross member 222. Specifically, one end of the first rod 111 is rotatably connected to the driving axle 23, and a connection point of the first rod 111 and the driving axle 23 is close to the frame longitudinal beam 221 on one side of the vehicle, and the other end of the first rod 111 is connected to the frame cross beam 222 of the vehicle. One end of the second rod 112 is rotatably connected to the driving axle 23, and a connection point of the second rod 112 and the driving axle 23 is close to the frame longitudinal beam 221 on the other side of the vehicle, and the other end of the second rod 112 is connected to the frame cross beam 222 of the vehicle. The end of the first rod 111 connected to the frame cross member 222 and the end of the second rod 112 connected to the frame cross member 222 are adjacent to each other and to the middle of the frame cross member 222. Wherein the middle portion of the frame cross member 222 is a position at the center line of the frame cross member 222 in the width direction of the vehicle. One end of the first rod 111 connected with the driving axle 23 and one end of the second rod 112 connected with the driving axle 23 are respectively located on the driving axle 23 and close to the frame longitudinal beams 221 on two sides, that is, one end of the first rod 111 connected with the driving axle 23 and one end of the second rod 112 connected with the driving axle 23 are far away from each other in the width direction of the vehicle so as to avoid the middle position of the driving axle 23, thereby preventing the interference with a main speed reducer, a differential mechanism and other components installed in the middle of the driving axle 23, avoiding the connection with a bulge structure 231 used for installing the main speed reducer, the differential mechanism and other components in the middle of the driving axle 23, simultaneously improving the stress of the bulge structure 231 on the driving axle 23 and reducing the failure rate of the driving axle 23. Meanwhile, the driving axle 23 can be limited longitudinally and laterally, and one end of the first rod 111 and one end of the second rod 112 can both rotate relative to the driving axle 23 so as to be suitable for the jumping of the driving axle 23.

The thrust rod assembly 11 in the embodiment can reduce the occupation of the space above the drive axle 23, and the space above the drive axle 23 only needs to be reserved with a small space to prevent the interference of the vehicle caused by the bounce of the drive axle 23 in the driving process, so that the overall height of the vehicle can be reduced, the gravity center of the vehicle is lowered, and the stability and the safety of the vehicle are improved. Meanwhile, the height of the thrust rod assembly 11 is reduced, so that the thrust rod assembly 11 is located at the bottom of the frame longitudinal beam 221, the installation is convenient, the space inside the frame longitudinal beam 221 is left, and the pipeline arrangement of a circuit gas circuit is facilitated.

When the thrust rod assembly 11 in the embodiment is assembled on the concrete pump truck, the height of the reserved space above the drive axle can be greatly reduced, more than 140mm can be saved through measurement and calculation, the setting angle of the pumping cylinder arranged above the drive axle of the concrete pump truck can be reduced to 1.8 degrees from 9 degrees, the pumping resistance is reduced, and the pumping efficiency can be improved by about 20 percent.

Example two

The thrust rod assembly 11 provided in the present embodiment is further improved on the basis of the first embodiment.

As shown in fig. 2, one end of the first rod 111 connected to the frame cross member 222 is connected to one end of the second rod 112 connected to the frame cross member 222, and the first rod 111 and the second rod 112 are connected to the frame cross member 222; in the direction from the frame cross beam 222 to the driving axle 23, the first rod 111 and the second rod 112 are gradually separated to both sides of the vehicle to form a horn-shaped structure, so that when relative displacement occurs between the frame and the driving axle 23 in the length direction or in the width direction, the relative displacement between the frame 22 and the driving axle 23 can be reduced by limiting through the thrust rod assembly 11, thereby preventing the tire, the hub and the like from interfering or rubbing with the frame 22, reducing abrasion, and enabling the driving axle 23 to have good axle load balancing capability.

The first rod 111 and the second rod 112 are symmetrically arranged in the width direction of the vehicle, so that the first rod 111 and the second rod 112 can be uniformly stressed, and the vehicle can be kept balanced in the width direction or the length direction to prevent the vehicle from deflecting to one side. When the first rod body 111 and the second rod body 112 form an approximate V-shaped structure, the lateral limiting capacity and the longitudinal limiting capacity are good, abnormal abrasion of tires is prevented favorably, and balance of a vehicle is improved.

EXAMPLE III

The thrust rod assembly 11 provided in the present embodiment is further improved on the basis of the second embodiment.

As shown in fig. 3, the thrust rod assembly 11 further includes a connecting portion 113. The connecting portion 113 is connected with the frame cross member 222, two ends of the connecting portion 113 in the width direction of the vehicle are respectively connected with the first rod 111 and the second rod 112, and the first rod 111 and the second rod 112 are connected with the frame cross member 222 through the connecting portion 113, so that the structure of the connecting portion 113 is simplified, and the processing difficulty is reduced. Specifically, as shown in fig. 3 and 4, the connecting portion 113 may have an approximately V-shaped structure, the opening of which faces the driving axle 23, or two ends of the opening of which extend in the width direction of the vehicle to form an approximately in-line structure, and two ends of the connecting portion 113 are connected to the first rod 111 and the second rod 112 respectively, so that the structure is simple and convenient to connect.

Example four

The thrust rod assembly 11 provided in the present embodiment is further improved on the basis of the third embodiment.

As shown in fig. 5, the thrust rod assembly 11 further includes a first link 114, a second link 115, and a third link 116. The first connecting member 114 and the second connecting member 115 are fixed to the transaxle 23, and the third connecting member 116 is fixedly connected to the frame cross member 222. The first connecting piece 114 is close to the frame longitudinal beam 221 on one side of the vehicle, and one end of the first rod 111, which is far away from the connecting part 113, is rotatably connected with the first connecting piece 114; the second connecting member 115 is close to the frame rail 221 on the other side of the vehicle, and one end of the second rod 112 far from the connecting portion 113 is rotatably connected with the second connecting member 115. The first connecting member 114 and the second connecting member 115 may be pin shaft seats, and the first rod 111 and the second rod 112 are respectively rotatably connected to the first connecting member 114 and the second connecting member 115 through pin shafts, and both can rotate with a certain amplitude relative to the driving axle 23. The third connecting member 116 is fixed to the middle of the frame cross member 222, and specifically, the third connecting member 116 may be a joint bearing and is rotatably connected to the connecting portion 113, so that the connecting portion 113 can rotate in a vertical direction by a certain amount, and thus a certain relative displacement is generated between the driving axle 23 and the frame 22 in the height direction of the vehicle. When the driving axle 23 jumps vertically, the first rod 111, the second rod 112 and the connecting portion 113 rotate to match with the movement of the driving axle 23, so as to prevent the whole frame 22 from jumping along with the driving axle 23, which is beneficial to improving the overall stability of the vehicle.

Further, as shown in fig. 6 and 7, in another implementation manner of the present embodiment, a hollow protrusion 231 is provided in the middle of the driving axle 23 for mounting a final drive, a differential, and the like. The first connecting piece 114 and the second connecting piece 115 are respectively located on the shoulder of the protruding structure 231, that is, the part of the protruding structure 231 with the height changing from high to low, specifically, the first connecting piece 114 is fixedly connected to one end of the protruding structure 231 close to the frame longitudinal beam 221, and one end of the first rod 111 far from the connecting portion 113 is rotatably connected with the first connecting piece 114; the second connecting member 115 is fixedly connected to one end of the protruding structure 231 close to the other frame rail 221, and one end of the second rod 112 away from the connecting portion 113 is rotatably connected to the second connecting member 115. Wherein, the first connecting piece 114 and the second connecting piece 115 are respectively inclined towards two ends of the driving axle 23 and are arranged in an inverted 'eight' -shaped manner on the plane where the driving axle 23 is located; the first rod 111 and the second rod 112 can rotate with a certain amplitude relative to the driving axle 23. The third connecting member 116 is fixed to the middle of the frame cross member 222 and is rotatably connected to the connecting portion 113, and the connecting portion 113 can rotate in a vertical direction to a certain extent.

EXAMPLE five

The present embodiment provides a thrust rod assembly 11, which is further improved on the basis of the first embodiment.

As shown in fig. 8, there is a distance m between the end of the first rod 111 connected to the frame cross member 222 and the end of the second rod 112 connected to the frame cross member 222 in the width direction of the vehicle, so that the first rod 111 and the second rod 112 are not directly connected, that is, the first rod 111 and the second rod 112 are independent from each other and are respectively connected to the frame cross member 222, thereby simplifying the structures of the first rod 111 and the second rod 112. Specifically, the first rod body 111 and the second rod body 112 are both straight thrust rods, which is beneficial to reducing the processing difficulty of the first rod body 111 and the second rod body 112 and reducing the cost. The distance m is smaller than or equal to a distance threshold, and further, the distance threshold is smaller than a maximum distance between the first rod 111 and the second rod 112 in the width direction, so that the arrangement form of the first rod 111 and the second rod 112 still keeps the first rod 111 and the second rod 112 gradually separated from each other towards two sides in the direction from the frame cross beam 222 to the drive axle 23, and the shape enclosed by the first rod 111, the second rod 112, the frame cross beam 222 and the drive axle 23 is close to a triangular or trapezoidal structure, so that the first rod 111 and the second rod 112 can bear certain thrust in the length direction and the width direction of the vehicle, and stability is improved.

EXAMPLE six

As shown in fig. 9, a first included angle a is formed between the first rod 111 and the second rod 112, and the angle range of the first included angle a is 18 ° to 25 °, so that the first rod 111 and the second rod 112 respectively approach to the frame rails 221 on two sides to avoid the middle position of the driving axle 23, and prevent interference with the protruding structure 231 on the driving axle 23 for mounting the main speed reducer, the differential, and the like, which is beneficial to reducing the overall height of the driving axle 23. Meanwhile, the thrust rod assembly 11 can bear thrust in the length direction and the width direction of the vehicle at the same time, and force transmission in multiple directions is realized to balance stress.

Further, first member and second member are symmetrical in the width direction of vehicle and are set up, are favorable to further improving equilibrium and stability.

Further, the height of the connecting portion of the first rod 111 and the driving axle 23 is not higher than the maximum height of the driving axle 23, and the height of the connecting portion of the second rod 112 and the driving axle 23 is also not higher than the maximum height of the driving axle 23, so that the mounting height of the thrust rod assembly 11 on the driving axle 23 is not more than the maximum mounting height of the portion of the driving axle 23 where other components are mounted, which is beneficial to reducing the overall center of gravity of the vehicle and improving the stability and safety of the vehicle.

EXAMPLE seven

The present embodiment provides a thrust rod assembly 11 for a driving axle 23 of a vehicle, which includes a first rod 111, a second rod 112, a connecting portion 113, a first connecting member 114, a second connecting member 115, and a third connecting member 116.

As shown in fig. 10, the frame rails 221 on both sides of the vehicle are located at both ends of the transaxle 23, respectively, and are disposed opposite to each other. The two ends of the first rod 111 are respectively connected with the drive axle 23 and the frame cross member 222, and the two ends of the second rod 112 are also respectively connected with the drive axle 23 and the frame cross member 222. The third connecting member 116 is fixed to the middle of the frame cross member 222, the connecting portion 113 is rotatably connected to the third connecting member 116, and both ends of the connecting portion 113 in the width direction of the vehicle are connected to the first rod 111 and the second rod 112, respectively. The drive axle 23 has a hollow protrusion 231 in the middle for mounting a main reducer, a differential and the like. The first connecting piece 114 and the second connecting piece 115 are both fixed on the drive axle 23, the first connecting piece 114 and the second connecting piece 115 are respectively located on the shoulder of the protruding structure 231, that is, the part of the protruding structure 231 with the height changing from high to low, specifically, the first connecting piece 114 is fixedly connected to one end of the protruding structure 231 close to the frame longitudinal beam 221, and one end of the first rod 111 far from the connecting part 113 is rotatably connected with the first connecting piece 114; the second connecting member 115 is fixedly connected to one end of the protruding structure 231 close to the other frame rail 221, and one end of the second rod 112 away from the connecting portion 113 is rotatably connected to the second connecting member 115. The first rod 111 and the second rod 112 are symmetrically arranged in the width direction of the vehicle, and form an approximately V-shaped structure with the connecting portion 113, and the opening faces the transaxle 23. The middle portion of the frame cross member 222 is a position close to the center line of the frame cross member 222 in the width direction of the vehicle. First connector 114 and second connector 115 may be pin shaft seats and third connector 116 may be a spherical plain bearing.

A first included angle a is formed between the first rod 111 and the second rod 112, and the angle range of the first included angle a is 18 ° to 25 °, so that the first rod 111 and the second rod 112 respectively approach to the frame longitudinal beams 221 on both sides to avoid the middle position of the drive axle 23, and the interference with the protruding structure 231 on the drive axle 23 for mounting components such as a main reducer, a differential and the like is prevented. Meanwhile, the drive axle 23 can be limited longitudinally and laterally, so that interference or friction between tires, hubs and the like and the frame 22 is prevented, abrasion is reduced, and the drive axle 23 has good axle load balancing capacity.

The thrust rod assembly 11 in the embodiment can reduce the occupation of the space above the drive axle 23, and the space above the drive axle 23 only needs to be reserved with a small space to prevent the interference of the vehicle caused by the bounce of the drive axle 23 in the driving process, so that the overall height of the vehicle can be reduced, the gravity center of the vehicle is lowered, and the stability and the safety of the vehicle are improved. Meanwhile, the height of the thrust rod assembly 11 is reduced, so that at least part of the thrust rod assembly 11 is located below the frame longitudinal beam 221, the installation is convenient, the space inside the frame longitudinal beam 221 is left, and the pipeline arrangement of a circuit gas circuit is facilitated.

When the thrust rod assembly 11 in the embodiment is assembled on a concrete pump truck, the height of the reserved space above the driving axle 23 can be greatly reduced, more than 140mm can be saved through measurement, the setting angle of the pumping cylinder above the driving axle 23 can be reduced to 1.8 degrees from 9 degrees, the pumping resistance is reduced, and the pumping efficiency can be improved by about 20 percent.

Example eight

The present embodiment provides a balanced suspension 1, as shown in fig. 11 and 12, including a balance shaft 12, two leaf spring assemblies 13, four lower thrust rods 14, and two thrust rod assemblies 11 in any of the above embodiments.

The balance shaft 12 is connected to the bottom of the frame cross member 222 of the vehicle, and extends to both sides of the frame side member 221 of the vehicle in the width direction of the vehicle. The two leaf spring assemblies 13 are respectively arranged on the outer sides of the two frame longitudinal beams 221 of the vehicle and are rotatably connected with the balance shaft 12, and two ends of each leaf spring assembly 13 along the length direction of the frame longitudinal beam 221 are respectively connected with two drive axles 23 adjacent to the vehicle.

The four lower thrust rods 14 are disposed below a transaxle 23 of the vehicle, and are mainly used for receiving thrust in the longitudinal direction of the vehicle. Specifically, two lower thrust rods 14 are respectively arranged on two sides in the vehicle width direction, the two lower thrust rods 14 on the same side are respectively arranged on the front side and the rear side of the balance shaft 12, and two ends of each lower thrust rod 14 are respectively connected with the balance shaft 12 and one drive axle 23 and are mainly used for limiting the relative displacement between the drive axle 23 and the frame cross member 222 in the vehicle length direction.

Two thrust rod assemblies 11 are arranged above the drive axle 23; one end of each thrust rod assembly 11, which is close to the first rod 111 and the second rod 112, is connected to the frame cross member 222, and the connection position is close to the middle of the frame cross member 222; one end of the first rod 111, which is far from the frame cross beam 222, is connected to the drive axle 23 at a position close to one frame longitudinal beam 221, and one end of the second rod 112, which is far from the frame cross beam 222, is connected to the drive axle 23 at a position close to the other frame longitudinal beam 221, so that the first rod 111 and the second rod 112 form a horn-shaped structure, and can bear thrust in the length direction and the width direction of the vehicle at the same time to limit the drive axle 23. One thrust rod assembly 11 is connected to one of the drive axles 23 located on the front side of the frame cross member 222, and the other thrust rod assembly 11 is connected to one of the drive axles 23 located on the rear side of the frame cross member 222 to simultaneously act on the adjacent two drive axles 23, so that the balance between the two drive axles 23 and the frame 22 is maintained.

The balanced suspension 1 in the present embodiment can suppress vehicle vibration and impact force caused by an uneven road surface, has good axle load balancing capability, and can limit the transaxle 23 in the longitudinal direction and the lateral direction at the same time. Wherein, the connecting position of thrust rod subassembly and transaxle 23 has avoided transaxle 23 middle part, is favorable to reducing the overall height of vehicle, can promote the stability and the security of vehicle. In addition, the joint of the thrust rod assembly 11 and the frame cross beam 222 can be designed to be as high as the supporting structure of the balance shaft 12, so that the supporting structure of the balance shaft 12 and the frame cross beam 222 can be integrated into a whole structure, the whole stress distribution of the frame can be improved, and the strength is further improved.

In addition, the balanced suspension 1 in this embodiment also has all the advantages of the thrust rod assembly 11 in any one of the above embodiments, and the description thereof is omitted here.

Example nine

In the present embodiment, a vehicle 2 is provided, and as shown in fig. 13, the vehicle 2 includes a vehicle body 21, a vehicle frame 22, two drive axles 23, and the balanced suspension 1 in the eighth embodiment.

The frame 22 is arranged at the bottom of the vehicle body 21 and comprises two frame longitudinal beams 221 and a plurality of frame cross beams 222, the plurality of frame cross beams 222 are arranged at intervals along the length direction of the frame longitudinal beams 221, and two ends of each frame cross beam 222 are fixedly connected with the two frame longitudinal beams 221 to form a frame structure for bearing the vehicle body 21.

Two drive axles 23 are disposed below frame rails 221 and frame cross member 222, and are spaced apart along the length of frame rails 221 for connecting to drive wheels and driving vehicle body 21. The balanced suspension 1 is connected with the two drive axles 23 and a frame cross beam 222 positioned between the two drive axles 23 to limit the relative displacement between the drive axles 23 and the frame 22, and can buffer the stress in the height direction of the vehicle body 21, so that the vehicle 2 has better balance, stability and safety. In addition, the vehicle 2 in this embodiment has all the beneficial effects of the balanced suspension 1 in the eighth embodiment, and the detailed description is omitted.

Further, the vehicle 2 is a concrete pump vehicle. In the working process of the concrete pump truck, the boom device needs to be unfolded to pump concrete to a target position, so that the overall gravity center of the concrete pump truck is raised, the risk that the concrete pump truck turns over or topples due to the raised gravity center is increased due to the complex working environment, and potential safety hazards are generated, so that the requirements on the stability and the balance of the concrete pump truck are high, the overall gravity center height of the concrete pump truck can be effectively reduced through the balance suspension 1 in the concrete pump truck, and the balance, the stability and the safety of the concrete pump truck can be improved. Meanwhile, the height of the reserved space above the drive axle is reduced, the setting angle of the pumping cylinder above the drive axle can be reduced, the height of the reserved space can be saved by more than 140mm through measurement, the setting angle of the pumping cylinder can be reduced to 1.8 degrees from 9 degrees, the pumping resistance is reduced, the pumping efficiency can be improved by about 20 percent, the construction efficiency can be effectively improved, and the construction cost is reduced.

The technical scheme of the embodiment of the invention is described in detail in combination with the accompanying drawings, so that the occupied space above the drive axle can be reduced, the interference of the vehicle caused by the jump of the drive axle in the driving process can be prevented only by reserving a small space above the drive axle, and meanwhile, the installation of parts above the drive axle is convenient, so that the overall height of the vehicle is reduced, the gravity center of the vehicle is lowered, and the stability and the safety of the vehicle are improved.

In embodiments according to the present invention, 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. Specific meanings of the above terms in the embodiments according to the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the description of the embodiments according to the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, only for convenience of description and simplification of description of the embodiments according to the present invention, and do not indicate or imply that the referred devices or units must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the technical solution.

In the description herein, 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 in accordance with 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 according to the present invention, and is not intended to limit the technical solution of the present application, and it is obvious to those skilled in the art that various modifications and changes can be made to the technical solution of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the technical solution of the present application.

Claims

1. A thrust rod assembly (11) for a drive axle (23) of a vehicle (2), comprising:

one end of the first rod body (111) is rotatably connected with the drive axle (23), the connection point of the first rod body is close to a frame longitudinal beam (221) on one side of the vehicle (2), and the other end of the first rod body (111) is connected with a frame cross beam (222) of the vehicle (2);

one end of the second rod body (112) is rotatably connected with the drive axle (23), the connection point of the second rod body is close to a frame longitudinal beam (221) on the other side of the vehicle (2), and the other end of the second rod body (112) is connected with the frame cross beam (222);

one end of the first rod body (111) connected with the frame cross beam (222) is close to one end of the second rod body (112) connected with the frame cross beam (222), and the first rod body and the second rod body are located at positions close to the middle of the frame cross beam (222).

2. The thrust rod assembly (11) of claim 1,

one end of the first rod body (111) connected with the frame cross beam (222) is connected with one end of the second rod body (112) connected with the frame cross beam (222), and the first rod body (111) and the second rod body (112) are symmetrically arranged in the width direction of the vehicle (2).

3. The thrust rod assembly (11) of claim 2, further comprising:

the connecting portion (113) is connected with the frame cross beam (222), one end of the connecting portion (113) in the width direction of the vehicle (2) is fixedly connected with the first rod body (111), and the other end of the connecting portion (113) in the width direction of the vehicle (2) is fixedly connected with the second rod body (112).

4. A thrust rod assembly (11) according to claim 3, wherein said drive axle (23) is provided with a hollow raised formation (231) in the middle thereof, said thrust rod assembly (11) further comprising:

the first connecting piece (114) is fixedly connected to one end, close to the frame longitudinal beam (221), of the protruding structure (231), and the first connecting piece (114) is rotatably connected with one end, far away from the connecting portion (113), of the first rod body (111);

the second connecting piece (115) is fixedly connected to one end, close to the other frame longitudinal beam (221), of the protruding structure (231), and the second connecting piece (115) is rotatably connected with one end, far away from the connecting portion (113), of the second rod body (112);

and the third connecting piece (116) is fixedly connected to the middle part of the frame cross beam (222) and is rotatably connected with the connecting part (113).

5. The thrust rod assembly (11) of claim 1,

one end of the first rod body (111) connected with the frame cross beam (222) and one end of the second rod body (112) connected with the frame cross beam (222) have a distance in the width direction of the vehicle (2), and the distance is not greater than a distance threshold value.

6. The thrust rod assembly (11) of any one of claims 1 to 5,

a first included angle is formed between the first rod body (111) and the second rod body (112), and the angle range of the first included angle is 18 degrees to 25 degrees.

7. The thrust rod assembly (11) of claim 6,

the height of the connecting part of the first rod body (111) and the drive axle (23) and the height of the connecting part of the second rod body (112) and the drive axle (23) are not higher than the maximum height of the drive axle (23).

8. A balanced suspension (1), characterized by comprising:

the balance shaft (12) is connected to the bottom of a frame cross beam (222) of the vehicle (2) and extends to two sides of a frame longitudinal beam (221) of the vehicle (2) along the width direction of the vehicle (2);

the two leaf spring assemblies (13) are respectively arranged on the outer sides of two frame longitudinal beams (221) of the vehicle (2) and are rotatably connected with the balance shaft (12), and two ends of each leaf spring assembly (13) along the length direction of the frame longitudinal beam (221) are respectively connected with two adjacent drive axles (23) of the vehicle (2);

the four lower thrust rods (14) are arranged below a drive axle (23) of the vehicle (2) and are respectively positioned at two sides of the vehicle (2) in the width direction, the two lower thrust rods (14) at the same side are respectively arranged at the front side and the rear side of the balance shaft (12), and two ends of each lower thrust rod (14) are respectively connected with the balance shaft (12) and one drive axle (23);

two thrust rod assemblies (11) according to any one of claims 1 to 7, disposed above the driving axle (23), wherein an end of each of the thrust rod assemblies (11) adjacent to the first rod (111) and the second rod (112) is connected to the frame cross member (222), an end of the first rod (111) remote from the frame cross member (222) is connected to the driving axle (23) at a position adjacent to one of the frame longitudinal members (221), and an end of the second rod (112) remote from the frame cross member (222) is connected to the driving axle (23) at a position adjacent to the other of the frame longitudinal members (221);

wherein one thrust rod assembly (11) is connected with one drive axle (23) positioned on the front side of the frame cross member (222), and the other thrust rod assembly (11) is connected with one drive axle (23) positioned on the rear side of the frame cross member (222).

9. A vehicle (2), characterized by comprising:

a vehicle body (21);

the frame (22) comprises two frame longitudinal beams (221) and a plurality of frame cross beams (222), the frame cross beams (222) are arranged at intervals along the length direction of the frame longitudinal beams (221), and two ends of each frame cross beam (222) are fixedly connected with the two frame longitudinal beams (221);

at least two drive axles (23) arranged below the frame (22) and arranged at intervals along the length direction of the frame longitudinal beam (221);

the balanced suspension (1) according to claim 8, being connected with two said transaxles (23) and one said frame cross member (222) located between two said transaxles (23).

10. The vehicle (2) of claim 9,

the vehicle (2) is a concrete pump vehicle.