Auxiliary frame, frame assembly and pump truck

Abstract

The utility model discloses an auxiliary frame, a frame assembly and a pump truck, the auxiliary frame comprises an auxiliary frame body, an inclined strut component and an inclined strut mounting seat, the inclined strut component comprises a head end and a tail end, the tail end of the inclined strut component is detachably connected to the inclined strut mounting seat, and the inclined strut mounting seat is detachably connected to the auxiliary frame body. According to the auxiliary frame, the frame assembly and the pump truck, a large amount of smoke or dust generated by welding of the inclined strut assembly is avoided, a foundation is laid for intelligent manufacturing and green manufacturing, the consistency of coating quality is guaranteed, the maintenance difficulty of the auxiliary frame is reduced, the auxiliary frame can share a coating line with a cantilever crane structural part, transportation is convenient, the auxiliary frame does not need to be welded, and cost is reduced. Therefore, the auxiliary frame body does not deform, the production efficiency is high, and the strength is high.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete pump trucks, in particular to a sub-frame, a frame assembly and a pump truck. Background Art

[0002] The pump truck usually includes chassis, subframe and underframe, among which the subframe includes subframe longitudinal beam and diagonal brace, and the diagonal brace is welded on the longitudinal beam to form a subframe. The underframe and subframe are assembled together by welding. The underframe is welded to the subframe longitudinal beam at the bottom and to the diagonal brace of the subframe at the tail end, and then installed on the chassis as a whole. The assembly of the subframe and the chassis beam is also connected by matching welding. During the assembly process, a large amount of smoke and dust will be generated due to the existence of the welding process, and the parts involved in the welding need to be partially repainted after the whole vehicle is off the line. The existing production process cannot achieve green manufacturing; and it is also very difficult to separate the subframe and the underframe after the underframe is welded to the subframe. When one of the parts of the underframe or subframe is damaged, it needs to be replaced as a whole, and the maintenance cost is high, which is not conducive to later maintenance and remanufacturing; in addition, the subframe after welding is large in size and has low transportation efficiency. Due to the size, the subframe cannot share the painting line with the boom structure, which makes the production line more complicated and more expensive. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a subframe, a frame assembly and a pump truck that can reduce the smoke caused by the welding process and lay the foundation for green manufacturing and intelligent manufacturing.

[0004] The purpose of the utility model is achieved through the following technical solution: The utility model provides a subframe, including a subframe body, a diagonal brace assembly and a diagonal brace mounting seat, the diagonal brace assembly includes a head end and a tail end, the tail end of the diagonal brace assembly is detachably connected to the diagonal brace mounting seat, and the diagonal brace mounting seat is detachably connected to the subframe body.

[0005] Further, the sub-frame body includes a first sub-frame longitudinal beam and a second sub-frame longitudinal beam, the first sub-frame longitudinal beam and the second sub-frame longitudinal beam are arranged in parallel and spaced apart, and the sub-frame body also includes a cross beam, both ends of the cross beam are respectively connected to the first sub-frame longitudinal beam and the second sub-frame longitudinal beam to connect the first sub-frame longitudinal beam and the second sub-frame longitudinal beam.

[0006] Further, the cross beam includes a first front cross beam, a second front cross beam, a middle cross beam and a tail cross beam which are arranged at intervals, and the first front cross beam, the second front cross beam, the middle cross beam and the tail cross beam have two ends connected to the first sub-frame longitudinal beam and the second sub-frame longitudinal beam respectively; the first front cross beam and the second front cross beam are arranged at the head end of the sub-frame body, the middle cross beam is arranged at the middle part between the head end and the tail end of the sub-frame body, and the middle cross beam is also arranged corresponding to the position of the diagonal brace mounting seat, and the tail cross beam is arranged at the tail end of the sub-frame body.

[0007] Further, the diagonal brace assembly includes a first diagonal brace and a second diagonal brace, and the first diagonal brace and the second diagonal brace are arranged at an interval; the diagonal brace mounting seat includes a first diagonal brace mounting seat and a second diagonal brace mounting seat, and the first diagonal brace is installed on the first sub-frame longitudinal beam through the first diagonal brace mounting seat, and the second diagonal brace is installed on the second sub-frame longitudinal beam through the second diagonal brace mounting seat.

[0008] Further, the subframe also includes a first reinforcing connecting plate, a second reinforcing connecting plate, a third reinforcing connecting plate and a fourth reinforcing connecting plate, the first reinforcing connecting plate and the second reinforcing connecting plate are detachably fixedly connected to the first subframe longitudinal beam, and are detachably fixedly connected to the first diagonal brace mounting seat, the third reinforcing connecting plate and the fourth reinforcing connecting plate are detachably fixedly connected to the second subframe longitudinal beam, and are detachably fixedly connected to the second diagonal brace mounting seat.

[0009] Furthermore, the subframe also includes a first reinforcing short beam and a second reinforcing short beam, the first reinforcing short beam is fixedly connected to the position of the first subframe longitudinal beam where the first diagonal brace mounting seat is installed, and the second reinforcing short beam is fixedly connected to the position of the second subframe longitudinal beam where the second diagonal brace mounting seat is installed.

[0010] Further, the first sub-frame longitudinal beam and the second sub-frame longitudinal beam each include a longitudinal beam web and a longitudinal beam side plate, and the two longitudinal beam side plates are respectively connected to the two sides of the longitudinal beam web, so that the first sub-frame longitudinal beam and the second sub-frame longitudinal beam form a structure with a C-shaped cross-section; the first reinforcing short beam and the second reinforcing short beam each include a short beam web and a short beam side plate, and the two short beam side plates are respectively connected to the two sides of the short beam web, so that the first reinforcing short beam and the second reinforcing short beam form a structure with a C-shaped cross-section; the short beam web of the first reinforcing short beam is attached to the longitudinal beam web of the first sub-frame longitudinal beam, the short beam side plate of the first reinforcing short beam is attached to the longitudinal beam side plate of the first sub-frame longitudinal beam, the short beam web of the second reinforcing short beam is attached to the longitudinal beam web of the second sub-frame longitudinal beam, and the short beam side plate of the second reinforcing short beam is attached to the longitudinal beam side plate of the second sub-frame longitudinal beam.

[0011] Furthermore, a first closing plate is connected to the open side of the first reinforcing short beam, and the first closing plate closes at least a portion of the first reinforcing short beam to form a closed cavity; a second closing plate is connected to the open side of the second reinforcing short beam, and the second closing plate closes at least a portion of the second reinforcing short beam to form a closed cavity; the first diagonal brace mounting seat is detachably fixedly connected to the first closing plate of the first reinforcing short beam, and the second diagonal brace mounting seat is detachably fixedly connected to the longitudinal beam web of the second subframe longitudinal beam.

[0012] The utility model also provides a frame assembly, comprising the above-mentioned sub-frame and a bottom frame, wherein the bottom of the bottom frame is detachably connected to the head end of the sub-frame body, and the top of the bottom frame is detachably connected to the head end of the diagonal support assembly.

[0013] The utility model also provides a pump truck, comprising the above-mentioned frame assembly.

[0014] The utility model has the following beneficial effects: in the sub-frame, frame assembly and pump truck of the utility model, the diagonal brace assembly is detachably mounted on the sub-frame body through the diagonal brace mounting seat, on the one hand, no welding is required, so that a large amount of smoke or dust is avoided from being generated by welding of the diagonal brace assembly, and the foundation for intelligent manufacturing and green manufacturing is laid, and no welding is required when assembling the diagonal brace assembly, so the connection parts of the diagonal brace assembly do not need to be repainted, and the paint surface of the sub-frame is the original paint surface, which ensures the consistency of the coating quality; on the other hand, when the diagonal brace assembly or the sub-frame body is damaged, the damaged diagonal brace assembly or the sub-frame body can be easily removed, and the intact diagonal brace assembly or the sub-frame body can be assembled, without cutting and re-welding, which reduces the maintenance difficulty of the sub-frame; on the other hand, the sub-frame body and the diagonal brace assembly are small in size, and can share the coating line with the arm structure, and the sub-frame body and the diagonal brace assembly are two independent parts, which are convenient for transportation. In addition, the sub-frame of this embodiment does not need to be welded, so the sub-frame body will not be deformed, the production efficiency is high, and the strength is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a perspective schematic diagram of a subframe according to an embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Another perspective schematic diagram of the subframe shown.

[0017] Figure 3 yes Figure 1 Front view of the subframe shown.

[0018] Figure 4 yes Figure 1 A partial enlarged view of point IV in the middle.

[0019] Figure 5 yes Figure 2 A partial enlarged view of the V in the middle.

[0020] Figure 6 yes Figure 1 Exploded view of the subframe shown.

[0021] Figure 7 yes Figure 6 A partial enlarged view of point VII in the middle.

[0022] Figure 8 yes Figure 1 A schematic structural diagram of the first reinforcing short beam of the subframe is shown.

[0023] Fig. 9 yes Figure 1 A schematic structural diagram of the second reinforced short beam of the subframe is shown.

[0024] Fig.10 It is a structural schematic diagram of a frame assembly of an embodiment of the utility model. DETAILED DESCRIPTION

[0025] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation method, structure, features and effects of the sub-frame and frame assembly proposed by the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments:

[0026] The utility model provides a subframe, please refer to Figures 1 to 3 The sub-frame of one embodiment includes a sub-frame body 11, a diagonal brace assembly 13 and a diagonal brace mounting seat (not shown in the figure), the diagonal brace assembly 13 includes a head end and a tail end, the tail end of the diagonal brace assembly 13 is detachably connected to the diagonal brace mounting seat, and the diagonal brace mounting seat is detachably connected to the sub-frame body 11. The sub-frame body 11 also includes a head end and a tail end, the head end of the sub-frame body 11 and the diagonal brace assembly 13 points to the front direction of the pump truck, and the tail end of the sub-frame body 11 and the diagonal brace assembly 13 points to the rear direction of the pump truck.

[0027] The sub-frame of the present embodiment has the diagonal brace assembly detachably mounted on the sub-frame body through the diagonal brace mounting seat. On the one hand, no welding is required, thus avoiding the generation of a large amount of smoke or dust by welding the diagonal brace assembly, and laying the foundation for intelligent manufacturing and green manufacturing. Moreover, no welding is required when assembling the diagonal brace assembly, so the connection parts of the diagonal brace assembly do not need to be repainted, and the paint surface of the sub-frame is the original paint surface, thereby ensuring the consistency of the painting quality. On the other hand, when the diagonal brace assembly or the sub-frame body is damaged, the damaged diagonal brace assembly or the sub-frame body can be conveniently removed, and the intact diagonal brace assembly or the sub-frame body can be assembled without cutting and re-welding, thereby reducing the maintenance difficulty of the sub-frame. On the other hand, the sub-frame body and the diagonal brace assembly are small in size, and can share a painting line with the boom structure, and the sub-frame body and the diagonal brace assembly are two independent parts, which are convenient for transportation. In addition, in the prior art, the diagonal brace mounting seat is connected to the sub-frame body by welding. Since the sub-frame body is usually a C-shaped cross-section, the sub-frame body is easily deformed during welding, which requires subsequent reshaping, reduces production efficiency, and the long weld also makes the connection easy to crack, affecting the service life; however, the sub-frame of this embodiment completely avoids this problem, so the sub-frame body will not be deformed, the production efficiency is higher, and the strength is higher.

[0028] In this embodiment, the end of the diagonal brace assembly 13 can be connected to the diagonal brace mounting seat through a screw connection structure, and the diagonal brace mounting seat can be connected to the sub-frame body 11 through a screw connection structure. It can be understood that the end of the diagonal brace assembly 13 can also be connected to the diagonal brace mounting seat through a pin structure, and the diagonal brace mounting seat can also be connected to the sub-frame body 11 through a pin structure. Specifically in this embodiment, the diagonal brace assembly 13 is connected to the diagonal brace mounting seat through a bolt group (i.e., multiple bolts), and the diagonal brace mounting seat is also connected to the sub-frame body 11 through a bolt group. The connection method of the bolt group can well ensure the strength of the connection.

[0029] In this embodiment, the subframe body 11 includes a first subframe longitudinal beam 111 and a second subframe longitudinal beam 112 , which are arranged in parallel and spaced apart, and extend along the length direction of the pump truck body.

[0030] In this embodiment, the sub-frame body 11 further includes a cross beam, and the two ends of the cross beam are respectively connected to the first sub-frame longitudinal beam 111 and the second sub-frame longitudinal beam 112, so as to connect the first sub-frame longitudinal beam 111 and the second sub-frame longitudinal beam 112. Specifically, the cross beam includes a first front cross beam 171, a second front cross beam 173, a middle cross beam 175 and a tail cross beam 177 arranged at intervals, and the two ends of the first front cross beam 171, the second front cross beam 173, the middle cross beam 175 and the tail cross beam 177 are respectively connected to the first sub-frame longitudinal beam 111 and the second sub-frame longitudinal beam 112. The first front cross beam 171 and the second front cross beam 173 are arranged at the head end of the sub-frame body 11, the middle cross beam 175 is arranged at the middle part between the head end and the tail end of the sub-frame body 11, and the middle cross beam 175 is also arranged corresponding to the position of the diagonal support mounting seat, and the tail cross beam 177 is arranged at the tail end of the sub-frame body 11. Specifically, the first front cross beam 171, the second front cross beam 173, the middle cross beam 175 and the tail cross beam 177 can be connected to the sub-frame body 11 in a detachable manner such as a screw structure or a pin structure. It can be understood that the connection between the first front cross beam 171, the second front cross beam 173, the middle cross beam 175 and the tail cross beam 177 and the first sub-frame longitudinal beam 111 and the second sub-frame longitudinal beam 112 can be a direct connection or an indirect connection through other components.

[0031] In this embodiment, the diagonal brace assembly 13 includes a first diagonal brace 131 and a second diagonal brace 132, and the first diagonal brace 131 and the second diagonal brace 132 are arranged at intervals. Specifically, the diagonal brace assembly 13 is arranged at a certain angle relative to the auxiliary frame longitudinal beam 111. Specifically, a connecting beam 134 can be connected between the first diagonal brace 131 and the second diagonal brace 132 to connect the first diagonal brace 131 and the second diagonal brace 132. The connecting beam 134 can be connected to the first diagonal brace 131 and the second diagonal brace 132 in a detachable manner such as a screw connection structure or a pin structure.

[0032] Specifically, the first diagonal brace 131 and the second diagonal brace 132 can be arranged in parallel, which is conducive to controlling the manufacturing error of the first diagonal brace 131 and the second diagonal brace 132 and facilitating the processing, manufacturing and assembly of the first diagonal brace 131 and the second diagonal brace 132 .

[0033] In this embodiment, the diagonal brace mounting seat includes a first diagonal brace mounting seat 151 and a second diagonal brace mounting seat 152. The first diagonal brace 131 is mounted on the first sub-frame longitudinal beam 111 through the first diagonal brace mounting seat 151, and the second diagonal brace 132 is mounted on the second sub-frame longitudinal beam 112 through the second diagonal brace mounting seat 152. Specifically, the first diagonal brace 131 and the second diagonal brace 132 are respectively located on the outside of the first diagonal brace mounting seat 151 and the second diagonal brace mounting seat 152, so that the distance between the first diagonal brace 131 and the second diagonal brace 132 can be increased, and the first diagonal brace 131 and the second diagonal brace 132 can be smoothly arranged in parallel.

[0034] Specifically, the first diagonal brace mounting seat 151 is arranged on the side of the first sub-frame longitudinal beam 111 close to the second sub-frame longitudinal beam 112, and the second diagonal brace mounting seat 152 is arranged on the side of the second sub-frame longitudinal beam 112 away from the first sub-frame longitudinal beam 111. In this way, by arranging the first diagonal brace mounting seat 151 on the inner side of the first sub-frame longitudinal beam 111, it is possible to make room for other components of the pump truck to avoid interference. Of course, the first diagonal brace mounting seat 151 can also be arranged on the side of the first sub-frame longitudinal beam 111 away from the second sub-frame longitudinal beam 112, or the second diagonal brace mounting seat 152 can be arranged on the side of the second sub-frame longitudinal beam 112 close to the first sub-frame longitudinal beam 111.

[0035] Specifically, the first diagonal brace mounting seat 151 and the second diagonal brace mounting seat 152 may both be plate-shaped.

[0036] Specifically, mounting holes are provided on the first diagonal brace mounting seat 151 and the second diagonal brace mounting seat 152 for mounting bolts or pins. Correspondingly, mounting holes are also provided on the first sub-frame longitudinal beam 111, the second sub-frame longitudinal beam 112, the first diagonal brace 131 and the second diagonal brace 132 for mounting bolts or pins.

[0037] For details, please refer to Figure 4 and Figure 5 The first diagonal brace mounting seat 151 includes a first main body 1511 and a first extension 1513. The first extension 1513 extends from one side of the first main body 1511, and the extension direction of the first extension 1513 is the same as the extension direction of the first diagonal brace 131. In this way, the connection length between the first diagonal brace mounting seat 151 and the first diagonal brace 131 can be larger, making the connection between them more secure. Similarly, the second diagonal brace mounting seat 152 includes a second main body 1521 and a second extension 1523. The second extension 15123 extends from one side of the second main body 1521, and the extension direction of the second extension 1523 is the same as the extension direction of the second diagonal brace 131.

[0038] In this embodiment, the sub-frame further includes a first reinforcing connecting plate 191, a second reinforcing connecting plate 192, a third reinforcing connecting plate 193 and a fourth reinforcing connecting plate 194. The first reinforcing connecting plate 191 and the second reinforcing connecting plate 192 are detachably fixedly connected to the first sub-frame longitudinal beam 111, and are detachably fixedly connected to the first diagonal brace mounting seat 151. The third reinforcing connecting plate 193 and the fourth reinforcing connecting plate 194 are detachably fixedly connected to the second sub-frame longitudinal beam 112, and are detachably fixedly connected to the second diagonal brace mounting seat 152. Specifically, the first reinforcing connecting plate 191 and the second reinforcing connecting plate 192 can be fixedly connected to the first sub-frame longitudinal beam 111 and the first diagonal brace mounting seat 151 by means of threaded connection or pin connection, and the third reinforcing connecting plate 193 and the fourth reinforcing connecting plate 194 can be fixedly connected to the second sub-frame longitudinal beam 112 and the second diagonal brace mounting seat 152 by means of threaded connection or pin connection. By providing the first reinforcing connecting plate 191 , the second reinforcing connecting plate 192 , the third reinforcing connecting plate 193 and the fourth reinforcing connecting plate 194 , the connection strength between the sub-frame body 11 and the diagonal brace mounting seat can be enhanced.

[0039] Specifically, the first reinforcing connecting plate 191 and the second reinforcing connecting plate 192 are arranged at intervals, and the third reinforcing connecting plate 193 and the fourth reinforcing connecting plate 194 are also arranged at intervals.

[0040] In this embodiment, please refer to Figure 6 and Figure 7 The sub-frame further includes a first reinforcing short beam 212 and a second reinforcing short beam 214. The first reinforcing short beam 212 is fixedly connected to the position of the first sub-frame longitudinal beam 111 where the first diagonal brace mounting seat 151 is installed, and the second reinforcing short beam 214 is fixedly connected to the position of the second sub-frame longitudinal beam 112 where the second diagonal brace mounting seat 152 is installed. Specifically, the first reinforcing short beam 212, the second reinforcing short beam 214 and the first sub-frame longitudinal beam 111, the second sub-frame longitudinal beam 112 can be connected in a detachable manner, specifically, can be connected by a pin connection or a threaded connection. The first reinforcing short beam 212 and the second reinforcing short beam 214 can strengthen the local strength of the first sub-frame longitudinal beam 111, the second sub-frame longitudinal beam 112, and form a double-layer structure.

[0041] Specifically, the first sub-frame longitudinal beam 111 and the second sub-frame longitudinal beam 112 each include a longitudinal beam web and a longitudinal beam side plate, and the two longitudinal beam side plates are respectively connected to the two sides of the longitudinal beam web, so that the first sub-frame longitudinal beam 111 and the second sub-frame longitudinal beam 112 form a structure with a substantially C-shaped cross section. The first reinforcing short beam 212 and the second reinforcing short beam 214 each include a short beam web and a short beam side plate, and the two short beam side plates are respectively connected to the two sides of the short beam web, so that the first reinforcing short beam 212 and the second reinforcing short beam 214 form a structure with a substantially C-shaped cross section. The short beam web of the first reinforcing short beam 212 is attached to the longitudinal beam web of the first sub-frame longitudinal beam 111 , the short beam side plate of the first reinforcing short beam 212 is attached to the longitudinal beam side plate of the first sub-frame longitudinal beam 111 , the short beam web of the second reinforcing short beam 214 is attached to the longitudinal beam web of the second sub-frame longitudinal beam 112 , and the short beam side plate of the second reinforcing short beam 214 is attached to the longitudinal beam side plate of the second sub-frame longitudinal beam 112 .

[0042] Specifically, one side of the first reinforcing connecting plate 191 and the second reinforcing connecting plate 192 is connected to the longitudinal beam side plate of the first sub-frame longitudinal beam 111, and the other side is connected to the first diagonal brace mounting seat 151. One side of the third reinforcing connecting plate 193 and the fourth reinforcing connecting plate 194 is connected to the longitudinal beam side plate of the second sub-frame longitudinal beam 112, and the other side is connected to the second diagonal brace mounting seat 152.

[0043] For details, please refer to Figure 8 The first sealing plate 216 is connected to the open side of the first reinforcing short beam 212. The first sealing plate 216 seals at least part of the first reinforcing short beam 212 to form a closed cavity, thereby improving the torsional rigidity and stability of the first reinforcing short beam 212. Specifically in this embodiment, a plurality of first sealing plates 216 are arranged at intervals. The first diagonal support mounting seat 151 is detachably fixedly connected to the first sealing plate 216 of the first reinforcing short beam 212. Please refer to Fig. 9 The second closing plate 218 is connected to the open side of the second reinforcing short beam 214, and the second closing plate 218 closes at least a portion of the second reinforcing short beam 214 to form a closed cavity, thereby improving the torsional rigidity and stability of the second reinforcing short beam 214. Specifically in this embodiment, the second closing plates 218 are arranged in a plurality of intervals. The second diagonal brace mounting seat 152 is detachably fixedly connected to the longitudinal beam web of the second sub-frame longitudinal beam 112. Specifically, the first closing plate 216 can be pre-connected to the open side of the first reinforcing short beam 212 by welding, and the second closing plate 218 can be pre-connected to the open side of the second reinforcing short beam 214 by welding.

[0044] Specifically, a first lug 219 is provided on part of the first sealing plate 216 of the first reinforcing short beam 212, and a second lug 221 is provided on part of the second sealing plate 218 of the second reinforcing short beam 214, so as to facilitate connecting other components to the first reinforcing short beam 212 and / or the second reinforcing short beam 214. More specifically, three first sealing plates 216 are provided on the first reinforcing short beam 212, and the first sealing plate 216 closest to the head end of the first sub-frame longitudinal beam 111 is provided with a first lug 219, three second sealing plates 218 are provided on the second reinforcing short beam 214, and the second sealing plate 218 closest to the head end of the second sub-frame longitudinal beam 112 is provided with a second lug 221, and both ends of the middle cross beam 175 are respectively connected to the first lug 219 on the first sealing plate 216 closest to the head end of the first sub-frame longitudinal beam 111 and the second lug 221 on the second sealing plate 218 closest to the head end of the second sub-frame longitudinal beam 112.

[0045] The utility model also provides a frame assembly, please refer to Fig.10 The frame assembly of one embodiment includes the above-mentioned sub-frame and the bottom frame 31, the bottom of the bottom frame 31 is detachably connected to the head end of the sub-frame body 11, and the top of the bottom frame 31 is detachably connected to the head end of the diagonal support assembly 13.

[0046] In this embodiment, the connection between the bottom frame 31 and the auxiliary frame body 11 and the diagonal brace assembly 13 can be detachable by threaded connection or pin connection. In this way, welding can be further avoided, and a large amount of smoke or dust can be avoided from welding, and the foundation for intelligent manufacturing and green manufacturing can be laid to ensure the consistency of coating quality; at the same time, when the bottom frame or the auxiliary frame is damaged, the damaged part can be conveniently removed and the intact parts can be assembled without cutting and re-welding, which reduces the maintenance difficulty of the frame assembly.

[0047] In this embodiment, the head end of the diagonal brace assembly 13 is connected to the base frame 31 through a connecting plate 33. Specifically, the first diagonal brace 131 and the second diagonal brace 132 may also be structures with a substantially C-shaped cross section. The first diagonal brace 131 and the second diagonal brace 132 both include a diagonal brace web and a diagonal brace side plate, and the two diagonal brace side plates are respectively connected to the two sides of the diagonal brace web, and the two diagonal brace side plates of the first diagonal brace 131 are respectively detachably connected to a connecting plate 33 by means of a threaded structure or a pin connection, and the two diagonal brace side plates of the second diagonal brace 132 are respectively detachably connected to a connecting plate 33 by means of a threaded structure or a pin connection, and the connecting plate 33 is detachably connected to the base frame 31 by means of a threaded structure or a pin connection.

[0048] The utility model also provides a pump truck, comprising the above-mentioned frame assembly.

[0049] It can be understood that, in the absence of conflict, the structures or structural features involved in the above embodiments can be arbitrarily superimposed.

[0050] In this document, unless otherwise specified or limited, the terms "installed", "connected", and "connected" 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0051] In this document, the directions or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", and "horizontal" are based on the directions or positional relationships shown in the accompanying drawings and are only for the clarity of the technical solution and the convenience of description. Therefore, they should not be understood as limitations on the present invention.

[0052] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0053] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A subframe, characterized in that: The invention comprises a sub-frame body (11), a diagonal brace assembly (13) and a diagonal brace mounting seat, wherein the diagonal brace assembly (13) comprises a head end and a tail end, the tail end of the diagonal brace assembly (13) is detachably connected to the diagonal brace mounting seat, and the diagonal brace mounting seat is detachably connected to the sub-frame body (11); the sub-frame body (11) comprises a first sub-frame longitudinal beam (111) and a second sub-frame longitudinal beam (112); the diagonal brace assembly (13) comprises a first diagonal brace (131) and a second diagonal brace (132), and the first diagonal brace (131) and the second diagonal brace (132) are arranged at intervals; the diagonal brace mounting seat comprises a first diagonal brace mounting seat (151) and a second diagonal brace mounting seat (152), the first diagonal brace (131) is mounted on the first sub-frame longitudinal beam (111) via the first diagonal brace mounting seat (151), and the second diagonal brace (132) is mounted on the second sub-frame longitudinal beam (112) via the second diagonal brace mounting seat (152).

2. The subframe according to claim 1, characterized in that: The first sub-frame longitudinal beam (111) and the second sub-frame longitudinal beam (112) are arranged in parallel and spaced apart, and the sub-frame body (11) further comprises a cross beam, two ends of which are respectively connected to the first sub-frame longitudinal beam (111) and the second sub-frame longitudinal beam (112) to connect the first sub-frame longitudinal beam (111) and the second sub-frame longitudinal beam (112).

3. The subframe according to claim 2, characterized in that: The cross beam comprises a first front cross beam (171), a second front cross beam (173), a middle cross beam (175) and a tail cross beam (177) which are arranged at intervals; the first front cross beam (171), the second front cross beam (173), the middle cross beam (175) and the tail cross beam (177) have two ends connected to the first sub-frame longitudinal beam (111) and the second sub-frame longitudinal beam (112) respectively; the first front cross beam (171) and the second front cross beam (173) are arranged at the head end of the sub-frame body (11); the middle cross beam (175) is arranged at the middle part between the head end and the tail end of the sub-frame body (11), and the middle cross beam (175) is also arranged corresponding to the position of the diagonal support mounting seat; and the tail cross beam (177) is arranged at the tail end of the sub-frame body (11).

4. The subframe according to claim 1, characterized in that: The sub-frame further comprises a first reinforcing connecting plate (191), a second reinforcing connecting plate (192), a third reinforcing connecting plate (193) and a fourth reinforcing connecting plate (194); the first reinforcing connecting plate (191) and the second reinforcing connecting plate (192) are detachably fixedly connected to the first sub-frame longitudinal beam (111), and are detachably fixedly connected to the first diagonal brace mounting seat (151); the third reinforcing connecting plate (193) and the fourth reinforcing connecting plate (194) are detachably fixedly connected to the second sub-frame longitudinal beam (112), and are detachably fixedly connected to the second diagonal brace mounting seat (152).

5. The subframe according to claim 1, characterized in that: The sub-frame further comprises a first reinforcing short beam (212) and a second reinforcing short beam (214); the first reinforcing short beam (212) is fixedly connected to a position of the first sub-frame longitudinal beam (111) where the first diagonal brace mounting seat (151) is mounted, and the second reinforcing short beam (214) is fixedly connected to a position of the second sub-frame longitudinal beam (112) where the second diagonal brace mounting seat (152) is mounted.

6. The subframe according to claim 5, characterized in that: The first sub-frame longitudinal beam (111) and the second sub-frame longitudinal beam (112) both comprise a longitudinal beam web and a longitudinal beam side plate, and the two longitudinal beam side plates are respectively connected to the two sides of the longitudinal beam web, so that the first sub-frame longitudinal beam (111) and the second sub-frame longitudinal beam (112) form a structure with a C-shaped cross-section; the first reinforcing short beam (212) and the second reinforcing short beam (214) both comprise a short beam web and a short beam side plate, and the two short beam side plates are respectively connected to the two sides of the short beam web, so that the first reinforcing short beam (212) and the second reinforcing short beam (214) 214) to form a structure with a C-shaped cross-section; the short beam web of the first reinforcing short beam (212) is attached to the longitudinal beam web of the first sub-frame longitudinal beam (111), the short beam side plate of the first reinforcing short beam (212) is attached to the longitudinal beam side plate of the first sub-frame longitudinal beam (111), the short beam web of the second reinforcing short beam (214) is attached to the longitudinal beam web of the second sub-frame longitudinal beam (112), and the short beam side plate of the second reinforcing short beam (214) is attached to the longitudinal beam side plate of the second sub-frame longitudinal beam (112).

7. The subframe according to claim 6, characterized in that: The open side of the first reinforcing short beam (212) is connected to a first sealing plate (216), and the first sealing plate (216) seals at least a portion of the first reinforcing short beam (212) to form a closed cavity; the open side of the second reinforcing short beam (214) is connected to a second sealing plate (218), and the second sealing plate (218) seals at least a portion of the second reinforcing short beam (214) to form a closed cavity; the first diagonal brace mounting seat (151) is detachably fixedly connected to the first sealing plate (216) of the first reinforcing short beam (212), and the second diagonal brace mounting seat (152) is detachably fixedly connected to the longitudinal beam web of the second sub-frame longitudinal beam (112).

8. A vehicle frame assembly, characterized in that: It comprises a sub-frame and a bottom frame (31) as claimed in any one of claims 1 to 7, wherein the bottom of the bottom frame (31) is detachably connected to the head end of the sub-frame body (11), and the top of the bottom frame (31) is detachably connected to the head end of the diagonal brace assembly (13).

9. A pump truck, characterized in that: Includes the frame assembly described in claim 8.

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