Frame auxiliary beam and operation machine

Abstract

The utility model relates to the technical field of fire-fighting vehicles, and discloses a frame auxiliary beam and an operation machine. The auxiliary beam of the frame comprises an auxiliary beam body. The auxiliary beam body comprises a first auxiliary beam and a second auxiliary beam. The first secondary beam is connected with the girder; the second auxiliary beam is arranged at the rear end or / and the front end of the first auxiliary beam and used for being connected with the girder, and the upper side face of the second auxiliary beam is lower than the upper side face of the first auxiliary beam. According to the utility model, the second auxiliary beam is arranged at the rear end or / and the front end of the first auxiliary beam, so that the load can be distributed to the girder by the auxiliary beam body; meanwhile, the upper side face of the second auxiliary beam is lower than the upper side face of the first auxiliary beam, the gravity center of the operation machine can be lowered, the running stability of the operation machine is improved, and the problem that in the prior art, due to the fact that the gravity center of the operation machine is high, the running stability of a whole vehicle is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of fire fighting vehicles, in particular to a vehicle frame sub-beam and an operating machine. Background Art

[0002] Working machinery, such as fire trucks, water trucks, and engineering vehicles with tanks and pumps, usually have a frame subframe installed above the main beam, close to the main beam. Although the frame subframe can evenly distribute the load to the main beam, it will also increase the center of gravity of the vehicle, thereby reducing the driving stability of the vehicle. Therefore, how to improve the driving stability of working machinery is an urgent problem that the industry needs to solve. Utility Model Content

[0003] The utility model provides a vehicle frame sub-beam and an operating machine, which are used to solve the problem of poor whole vehicle driving stability caused by a high center of gravity in the operating machine in the prior art.

[0004] The utility model provides a vehicle frame sub-beam, comprising a sub-beam body, wherein the sub-beam body comprises:

[0005] A first auxiliary beam, used for connecting with the main beam;

[0006] The second sub-beam is arranged at the rear end and / or the front end of the first sub-beam and is used to be connected with the main beam; the upper side surface of the second sub-beam is lower than the upper side surface of the first sub-beam.

[0007] According to the vehicle frame sub-beam provided by the utility model, a clearance groove is formed on the upper side surface of the first cross beam of the first sub-beam, and the clearance groove is used for installing the transmission shaft.

[0008] According to the vehicle frame sub-beam provided by the utility model, the second sub-beam is connected to the first sub-beam.

[0009] According to the vehicle frame sub-beam provided by the utility model, the torsional strength of the first sub-beam is greater than the torsional strength of the second sub-beam.

[0010] According to the vehicle frame sub-beam provided by the utility model, the first sub-beam is a pipe, and the second sub-beam is a plate.

[0011] According to the frame subbeam provided by the utility model, the frame subbeam further includes:

[0012] A reinforcing assembly is connected to the first transverse beam and the first longitudinal beam of the first sub-beam.

[0013] According to the frame subbeam provided by the utility model, the reinforcement assembly includes:

[0014] The reinforcement member includes two reinforcement plates, and the two reinforcement plates are respectively arranged on the front side and the rear side of the first cross beam; the reinforcement plates are connected to the first cross beam and the first longitudinal beam.

[0015] According to the frame subbeam provided by the utility model, the frame subbeam further includes:

[0016] A first connecting component is connected to the auxiliary beam body; the first connecting component is provided with a first mounting hole along the left-right direction; the first mounting hole is used to install a first fastener so that the first connecting component is detachably connected to the beam;

[0017] or / and;

[0018] The second connecting component is connected to the auxiliary beam body; along the up and down direction, the second connecting component is provided with a second mounting hole, and the second mounting hole is used to install a second fastener, so that the second connecting component is detachably connected to the main beam.

[0019] A second aspect of the utility model provides a working machine, comprising any one of the frame subbeams described above.

[0020] The operating machine provided by the utility model also includes:

[0021] A beam, the upper side of which is connected to the frame sub-beam;

[0022] The transmission system comprises a transmission shaft, wherein the transmission shaft is mounted in a clearance groove of the frame sub-beam, and the front end of the transmission shaft is used to be connected to a power take-off assembly;

[0023] An actuator is installed on the upper side of the second auxiliary beam, and the rear end of the transmission shaft is transmission-connected to the actuator.

[0024] The frame sub-beam provided by the utility model can ensure that the sub-beam body can distribute the load to the main beam by arranging the second sub-beam at the rear end and / or the front end of the first sub-beam; at the same time, the upper side surface of the second sub-beam is made lower than the upper side surface of the first sub-beam, which can lower the center of gravity of the operating machinery and improve the driving stability of the operating machinery, thereby solving the problem of poor driving stability of the whole vehicle due to the high center of gravity of the operating machinery in the prior art.

[0025] The working machine provided by the utility model has at least the above advantages because it includes the frame sub-beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a schematic structural diagram of a frame secondary beam provided by the present utility model.

[0028] Figure 2 It is a schematic assembly structural diagram of the frame secondary beam provided by the present utility model with a transmission system and an actuator.

[0029] Figure 3 It is a schematic structural diagram of a working machine provided by the present utility model.

[0030] Reference numerals:

[0031] 100, frame secondary beam; 200, main beam; 300, transmission system; 400, actuator;

[0032] 110, secondary beam body; 111, first secondary beam; 112, second secondary beam; 1111, first cross beam; 1112, first longitudinal beam; 1113, relief groove; 1121, second longitudinal beam; 1122, second cross beam;

[0033] 120, strengthening component;

[0034] 130, first connection component; 131, connecting plate; 132, first mounting hole;

[0035] 140, second connection component; 141, first connecting piece; 142, second fastener;

[0036] 150, third connection component; 151, upper connecting piece; 152, lower connecting piece; 153, third fastener; 154, upper mounting hole. Detailed implementation manners

[0037] To make the purpose, technical solutions and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0038] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0040] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below", and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

[0041] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0042] In order to solve the problem of poor driving stability of the whole vehicle caused by a relatively high center of gravity in the existing working machinery, the present utility model provides a frame secondary beam. The following will be combined with Figures 1 to 3 to make a detailed description of the frame secondary beam of the present utility model.

[0043] As Figure 1 and Figure 2 shown, a specific embodiment of the first aspect of the present utility model provides a frame secondary beam 100. The frame secondary beam 100 includes a secondary beam body 110; the secondary beam body 110 includes a first secondary beam 111 and a second secondary beam 112. The first secondary beam 111 is used to connect with the main beam 200; the second secondary beam 112 is arranged at the rear end and / or the front end of the first secondary beam 111 and is used to connect with the main beam 200, and the upper side surface of the second secondary beam 112 is lower than the upper side surface of the first secondary beam 111.

[0044] In this embodiment, by arranging the second secondary beam 112 at the rear end and / or the front end of the first secondary beam 111, it can be ensured that the secondary beam body 110 can distribute the load to the main beam 200; at the same time, by making the upper side surface of the second secondary beam 112 lower than the upper side surface of the first secondary beam 111, the center of gravity of the working machinery can be reduced, and the driving stability of the working machinery can be improved, thus solving the problem of poor driving stability of the whole vehicle caused by a relatively high center of gravity in the existing working machinery.

[0045] It should be noted that the rear end can refer to the end far from the power take-off assembly of the whole vehicle. Correspondingly, the front end can refer to the end close to the power take-off assembly of the whole vehicle.

[0046] In some embodiments, the second secondary beam 112 is arranged at the rear end of the first secondary beam 111. In other words, the second secondary beam 112 is arranged at the end of the first secondary beam 111 far from the power take-off assembly. Specifically, the front end of the second secondary beam 112 is connected to the rear end of the first secondary beam 111, which can further improve the rigidity and torsional strength of the secondary beam body 110.

[0047] In some other embodiments, the second secondary beam 112 is arranged at the front end of the first secondary beam 111. In other words, the second secondary beam 112 is arranged at the end of the first secondary beam 111 close to the power take-off assembly. Specifically, the rear end of the second secondary beam 112 is connected to the front end of the first secondary beam 111, which can further improve the rigidity and torsional strength of the secondary beam body 110.

[0048] Existing fire trucks include a main beam, a sub-frame beam of the vehicle frame, and upper-mounted equipment; the sub-frame beam of the vehicle frame is installed on the upper side of the main beam; the upper-mounted equipment is installed on the upper side of the sub-frame beam of the vehicle frame, so that the sub-frame beam of the vehicle frame can evenly distribute the weight of the upper-mounted equipment to the main beam. The upper-mounted equipment includes a water tank, a transmission system, and a fire pump system; the water tank is installed on the sub-frame beam of the vehicle frame, and a clearance space is reserved between the water tank and the sub-frame beam of the vehicle frame; the transmission system includes a transmission shaft, the front end of the transmission shaft passes through the clearance space and is connected to the power take-off assembly of the engine system; the rear end of the transmission shaft is drivingly connected to the fire pump of the fire pump system. Since a clearance space is reserved between the lower part of the water tank and the sub-frame beam of the vehicle frame, this will further increase the height of the water tank, and further increase the center of gravity of the whole vehicle, and further reduce the turning speed and driving stability of the whole vehicle.

[0049] If the sub-frame beam provided in this embodiment is used for a fire truck, and the fire pump of the fire truck is installed on the second sub-beam 112, not only can the height of the fire pump system of the fire truck be reduced, but also the height of the transmission shaft can be reduced, so that the height of the water tank is reduced. Therefore, when the weight of the whole vehicle is certain, the center of gravity of the whole vehicle can be reduced. Therefore, the sub-frame beam of this embodiment can improve the turning speed and driving stability of the whole fire truck.

[0050] It can be understood that when the sub-frame beam 100 of this embodiment is used for a fire truck, the rigidity of the sub-frame beam 100 meets the rigidity requirements for carrying the upper-mounted equipment, and the torsional strength of the sub-frame beam 100 meets the torsional strength requirements for carrying the upper-mounted equipment.

[0051] In some embodiments, a clearance groove 1113 is formed on the upper side of the first cross beam 1111 of the first sub-beam 111, and the clearance groove 1113 is used for installing the transmission shaft. By opening the clearance groove 1113 on the first cross beam 1111, the height of the transmission shaft can be further reduced, and the height of the load above the transmission shaft can be further reduced, thereby further reducing the center of gravity of the whole vehicle and improving the turning speed and driving stability of the whole vehicle. When the sub-frame beam of this embodiment is applied to a fire truck, the height of the water tank above the transmission shaft can be further reduced. Through the design of the clearance groove 1113, the installation levelness of the transmission shaft and the fire pump system can also be improved.

[0052] In some embodiments, the second sub-beam 112 is connected to the first sub-beam 111. By connecting the second sub-beam 112 to the first sub-beam 111, the rigidity and torsional strength of the sub-beam body 110 can be further improved, and the assembly rate and convenience of assembly can be improved.

[0053] Exemplarily, the second sub-beam 112 is welded to the first sub-beam 111. Specifically, the rear end of the first sub-beam 111 is welded to the front end of the second sub-beam 112.

[0054] Exemplarily, the second sub-beam 112 and the first sub-beam 111 are formed integrally.

[0055] Exemplarily, the second sub-beam 112 is detachably connected to the first sub-beam 111 by means of bolts and screws. Specifically, the rear end of the first sub-beam 111 is detachably connected to the front end of the second sub-beam 112 by means of screws and bolts.

[0056] In some embodiments, the torsional strength of the first subbeam 111 is greater than the torsional strength of the second subbeam 112. By limiting the torsional strength of the first subbeam 111 to be greater than the torsional strength of the second subbeam 112, it is ensured that the torsional strength of the subbeam body 110 can meet the design requirements.

[0057] Furthermore, the first sub-beam 111 is a pipe, and the second sub-beam 112 is a plate. The steel pipe is easy to process and weld. The steel plate can reduce the height while ensuring the rigidity of the sub-beam body 110.

[0058] Specifically, the pipe is preferably a steel pipe, and the plate is preferably a steel plate.

[0059] like Figure 1 As shown, specifically, the first auxiliary beam 111 includes two first longitudinal beams 1112 and a plurality of first transverse beams 1111; along the left-right direction, the two first longitudinal beams 1112 are arranged at intervals. Along the front-back direction, the plurality of first transverse beams 1111 are arranged at intervals, and the left end and the right end of each first transverse beam 1111 are connected to the two first longitudinal beams 1112 respectively.

[0060] It is to be understood that a plurality is defined as at least two.

[0061] Furthermore, the first cross beam 1111 and the first longitudinal beam 1112 are both steel pipes, and the first longitudinal beam 1112 and the first cross beam 1111 are welded. Specifically, the first cross beam 1111 and the first longitudinal beam 1112 are both rectangular steel pipes. The steel pipe and the welding connection method can ensure the rigidity and torsional strength of the first cross beam 1111.

[0062] Exemplarily, the first sub-beam 111 includes two first cross beams 1111; a clearance groove 1113 is formed on the upper side of one first cross beam 1111, and the other first cross beam 1111 is used to connect with the transmission shaft, which can improve the installation stability of the transmission shaft.

[0063] like Figure 1As shown, specifically, the second secondary beam 112 includes two second longitudinal beams 1121 and at least one second cross beam 1122; along the left - right direction, the two second longitudinal beams 1121 are arranged at intervals, and the second longitudinal beam 1121 is a steel plate; the second longitudinal beam 1121 corresponds to the first longitudinal beam 1112 one by one, and the front end of the second longitudinal beam 1121 is welded to the rear end of the first longitudinal beam 1112; the upper side surface of the second longitudinal beam 1121 is lower than the upper side surface of the first secondary beam 111. The left end and the right end of the second cross beam 1122 are respectively welded to the two second longitudinal beams 1121, the second cross beam 1122 is a steel plate, and the upper side surface of the second cross beam 1122 is lower than the upper side surface of the first secondary beam 111. By designing both the second longitudinal beam 1121 and the second cross beam 1122 as steel plates, the cost can be reduced. Combining with welding the second longitudinal beam 1121 to the first longitudinal beam 1112 can ensure the rigidity of the entire secondary beam body 110, so that on the basis of meeting the stiffness requirements for carrying the upper - mounted equipment, the center - of - gravity height of the whole vehicle can be reduced. In addition, the second cross beam 1122 can also provide an installation basis for the fire - pump system.

[0064] As Figure 1 and Figure 2 As shown, in some embodiments, the vehicle - frame secondary beam 100 further includes a strengthening component 120; the strengthening component 120 is connected to the first cross beam 1111 and the first longitudinal beam 1112 of the first secondary beam 111 for increasing the torsional resistance of the secondary beam body 110. Specifically, the strengthening component 120 is arranged at the connection of the first cross beam 1111 and the first longitudinal beam 1112, and the two side surfaces of the strengthening component 120 are respectively welded to the first cross beam 1111 and the first longitudinal beam 1112.

[0065] Furthermore, the strengthening component 120 includes a strengthening member; the strengthening member includes two strengthening plates; the two strengthening plates are respectively arranged on the front side surface and the rear side surface of the first cross beam 1111; the strengthening plates are connected to the first cross beam 1111 and the first longitudinal beam 1112.

[0066] In this embodiment, by respectively arranging strengthening plates on the front side surface and the rear side surface of the first cross beam 1111, the first cross beam 1111, the two strengthening plates and the first longitudinal beam 1112 can enclose to form a strengthening framework, which can further improve the torsional resistance of the entire vehicle - frame secondary beam 100.

[0067] Furthermore, the strengthening plate is a right - angled triangle structure or a bracket - trapezoid structure.

[0068] Furthermore, the strengthening plate is welded to the first cross beam 1111 and the first longitudinal beam 1112.

[0069] As Figure 1 and Figure 2 As shown, in some embodiments, the vehicle - frame secondary beam 100 further includes a first connection component 130 or / and a second connection component 140.

[0070] Among them, the first connection component 130 is connected to the auxiliary beam body 110; along the left - right direction, the first connection component 130 is provided with a first mounting hole 132; the first mounting hole 132 is used for mounting a first fastener to detachably connect the first connection component 130 to the main beam 200.

[0071] The second connection component 140 is connected to the auxiliary beam body 110; along the up - down direction, the second connection component 140 is provided with a second mounting hole, and the second mounting hole is used for mounting a second fastener to detachably connect the second connection component 140 to the main beam 200.

[0072] In this embodiment, by providing the first connection component 130 or the second connection component 140, the detachable connection between the auxiliary beam body 110 and the main beam 200 can be realized. If both the first connection component 130 and the second connection component 140 are provided, the installation stability between the auxiliary beam body 110 and the main beam 200 can be improved. At the same time, the stress inside the auxiliary beam body 110 can be more evenly transmitted to the main beam 200, making the load - bearing capacity better.

[0073] In addition, by providing the first mounting hole 132 along the left - right direction and detachably connecting the main beam 200 to the first connection component 130 through the first fastener disposed in the first mounting hole 132, the installation stability of the auxiliary beam body 110 in the left - right direction can be improved, and the problem of the auxiliary beam body 110 moving left and right under large loads can be avoided. By providing the second mounting hole along the up - down direction and detachably connecting the main beam 200 to the second connection component 140 through the second fastener 142 disposed in the second mounting hole, the installation stability of the auxiliary beam body 110 in the up - down direction can be improved, and the problem of the auxiliary beam body 110 moving up and down under large loads can be avoided.

[0074] Exemplarily, the first connection component 130 includes a connection plate 131; the connection plate 131 is welded to the auxiliary beam body 110. Along the left - right direction, the connection plate 131 is provided with a first mounting hole 132, and the first mounting hole 132 is used for mounting a first fastener, and the first fastener can detachably connect the connection plate 131 to the main beam 200. The second connection component 140 includes a first connecting member 141; the first connecting member 141 is welded to the auxiliary beam body 110; along the up - down direction, the first connecting member 141 is provided with a second mounting hole, and the second mounting hole is used for mounting a second fastener 142, and the second fastener 142 is used for detachably connecting the first connecting member 141 to the main beam 200.

[0075] Such as Figure 1 and Figure 2As shown, in some embodiments, the frame sub-beam 100 further includes a third connecting assembly 150; the third connecting assembly 150 is used to be detachably connected to the sub-beam body 110 and the beam 200. The third connecting assembly 150 can be used to connect the beam 200 to the sub-beam body 110 according to actual needs.

[0076] Further, the third connecting assembly 150 includes an upper connecting member 151 and a lower connecting member 152; the upper connecting member 151 is detachably connected to the auxiliary beam body 110, the lower connecting member 152 is located below the upper connecting member 151, and is fastened to the upper connecting member 151 through a fourth fastener; the lower connecting member 152 is detachably connected to the beam 200. Specifically, an upper mounting hole 154 is provided on the side of the upper connecting member 151 along the left-right direction, and a screw is provided in the upper mounting hole 154, and the screw is used to detachably connect the upper connecting member 151 to the auxiliary beam body 110. The upper connecting member 151 is provided with a third mounting hole along the up-down direction, and correspondingly, the lower connecting member 152 is provided with a fourth mounting hole, and the third fastener 153 is provided in the third mounting hole and the fourth mounting hole, and is used to fasten the upper connecting member 151 to the lower connecting member 152. A lower mounting hole is provided on the side surface of the lower connecting member 152 along the left-right direction, and a screw is arranged in the lower mounting hole. The screw is used to detachably connect the lower connecting member 152 to the beam 200 .

[0077] A second aspect of the present invention provides a working machine, which includes a frame subbeam 100 of any of the above embodiments.

[0078] Since the present embodiment includes the above-mentioned vehicle frame sub-beam 100 , it has at least the above-mentioned advantages, which will not be described in detail here.

[0079] like Figure 2 and Figure 3 As shown, further, the working machine includes a main beam 200, a transmission system 300 and an actuator 400; the upper side of the main beam 200 is connected to the frame subbeam 100; the transmission system 300 includes a transmission shaft, the transmission shaft is installed in the yield groove 1113 of the frame subbeam 100, and the front end of the transmission shaft is used to connect with the power take-off assembly (not shown in the figure); the actuator 400 is installed on the upper side of the second subbeam 112, and the rear end of the transmission shaft is transmission-connected to the actuator 400.

[0080] In this embodiment, by installing the transmission shaft of the transmission system 300 in the clearance groove 1113, the center of gravity of the vehicle can be further lowered, the height of the vehicle can be lowered, and the turning speed and driving stability of the vehicle can be improved. By installing the actuator 400 on the second sub-beam 112, the height of the actuator 400 can be lowered, and then the height of the vehicle can be lowered, so that the center of gravity of the vehicle can be further lowered, and the turning speed and driving stability of the vehicle can be improved.

[0081] Exemplarily, the actuator 400 includes a fire pump and a fire pipeline; the rear end of the transmission shaft is in transmission connection with the fire pump, and the fire pipeline is used to communicate with the water tank; the transmission shaft drives the fire pump to rotate, and is used to pump the water in the water tank to the fire pipeline.

[0082] Further, the working machine is one of a fire truck, a sprinkler truck or an engineering vehicle.

[0083] Among them, the engineering vehicle is preferably an engineering vehicle with a tank and a pump.

[0084] Exemplarily, the fire pump system of the fire truck is installed on the second auxiliary beam 112, and the water tank is installed on the first auxiliary beam 111, which can reduce the height of the fire pump system, reduce the height of the water tank, and further reduce the center of gravity of the entire fire truck, improving the driving stability of the entire fire truck.

[0085] Exemplarily, the water pump of the sprinkler truck is installed on the second auxiliary beam 112, and the water tank is installed on the first auxiliary beam 111, which can reduce the height of the water pump system, reduce the height of the water tank, and further reduce the center of gravity of the entire sprinkler truck, improving the driving stability of the entire sprinkler truck.

[0086] Exemplarily, for an engineering vehicle with a tank and a pump, the pump is installed on the second auxiliary beam 112, and the tank is installed on the first auxiliary beam 111, which can reduce the height of the pump and the tank, and further reduce the center of gravity of the entire engineering vehicle, improving the driving stability of the entire engineering vehicle.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A frame subframe, characterized in that: The invention comprises a sub-beam body (110), wherein the sub-beam body (110) comprises: A first auxiliary beam (111), used for connecting to the main beam (200); The second sub-beam (112) is arranged at the rear end or / and the front end of the first sub-beam (111) and is used to be connected to the main beam (200); the upper side surface of the second sub-beam (112) is lower than the upper side surface of the first sub-beam (111).

2. The frame subframe according to claim 1, characterized in that: A clearance groove (1113) is formed on the upper side surface of the first cross beam (1111) of the first auxiliary beam (111), and the clearance groove (1113) is used for installing a transmission shaft.

3. The frame subframe according to claim 1, characterized in that: The second sub-beam (112) is connected to the first sub-beam (111).

4. The frame subframe according to claim 1, characterized in that: The torsional strength of the first sub-beam (111) is greater than the torsional strength of the second sub-beam (112).

5. The frame subframe according to claim 4, characterized in that: The first sub-beam (111) is a pipe, and the second sub-beam (112) is a plate.

6. The frame subframe according to claim 1, characterized in that: The vehicle frame sub-beam (100) further comprises: A reinforcing assembly (120) is connected to the first transverse beam (1111) and the first longitudinal beam (1112) of the first sub-beam (111).

7. The frame subframe according to claim 6, characterized in that: The reinforcement component (120) comprises: A reinforcement member, the reinforcement member comprising two reinforcement plates, the two reinforcement plates being respectively arranged on the front side and the rear side of the first cross beam (1111); the reinforcement plates being connected to the first cross beam (1111) and the first longitudinal beam (1112).

8. The frame subframe according to any one of claims 1 to 7, characterized in that: The vehicle frame sub-beam (100) further comprises: A first connection component (130) is connected to the auxiliary beam body (110); the first connection component (130) is provided with a first mounting hole (132) along the left-right direction; the first mounting hole (132) is used to install a first fastener, so that the first connection component (130) and the main beam (200) are detachably connected; or / and; A second connection component (140) is connected to the auxiliary beam body (110); along the up-down direction, the second connection component (140) is provided with a second mounting hole, the second mounting hole being used to mount a second fastener, so that the second connection component (140) is detachably connected to the main beam (200).

9. A working machine, characterized in that: The vehicle frame subframe (100) comprises the vehicle frame subframe (100) as claimed in any one of claims 1 to 8.

10. The working machine according to claim 9, characterized in that: Also includes: A main beam (200), the upper side surface of the main beam (200) being connected to the vehicle frame sub-beam (100); A transmission system (300) comprising a transmission shaft, the transmission shaft being mounted in a clearance groove (1113) of the frame sub-beam (100), the front end of the transmission shaft being used for connection with a power take-off assembly; An actuator (400) is mounted on the upper side of the second auxiliary beam (112), and the rear end of the transmission shaft is in transmission connection with the actuator (400).

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