Heavy dumper frame

Abstract

The heavy dumper frame comprises a left longitudinal beam, a right longitudinal beam, a first cross beam assembly, a second cross beam assembly, a third cross beam assembly, a middle cross beam assembly, a balance shaft cross beam assembly and a tail cross beam assembly, wherein the first cross beam assembly, the second cross beam assembly, the third cross beam assembly, the middle cross beam assembly, the balance shaft cross beam assembly and the tail cross beam assembly are sequentially installed between the left longitudinal beam and the right longitudinal beam from front to back. By optimizing the structure and layout of the cross beam, the overall strength of the frame and the stress bearing capacity of the tail are improved, and the problems that the frame is twisted under the full-load working condition of the dumper and the tail of the frame sinks and is twisted and deformed under the lifting working condition are solved; the dumper frame is of a variable-width structure, the width between the left longitudinal beam and the right longitudinal beam in the front of the frame is increased, and therefore the requirement for the installation space of a large-size engine can be met.

Description

Technical Field

[0001] The utility model relates to the technical field of dump trucks, in particular to a heavy-duty dump truck frame. Background Art

[0002] A dump truck is a vehicle that unloads cargo by itself through hydraulic or mechanical lifting. It has the transport capacity of an ordinary truck and the ability to lift and unload cargo in a cargo box. It is a commonly used special-purpose transport vehicle.

[0003] As a load-bearing system, the dump truck frame bears the static load and impact load of the suspension system, power system, transmission system, post-processing system, fuel system, upper system and other mechanisms. Therefore, the dump truck frame must have sufficient strength and rigidity to ensure various operating conditions, especially the safety and reliability under lifting conditions. The existing dump truck frame has the following defects: First, the unreasonable distribution and structure of the crossbeams lead to the problem of insufficient frame strength and easy distortion under full load conditions; second, the insufficient strength of the rear part of the frame leads to the sinking and distortion of the rear part of the frame during the lifting process of the dump truck, which seriously affects the transportation safety and personnel safety. Summary of the invention

[0004] In view of this, the utility model provides a heavy-duty dump truck frame to solve the technical problem that the existing dump truck frame is prone to twisting and deformation due to unreasonable arrangement of the crossbeam structure, thereby affecting the operating safety and reliability of the dump truck.

[0005] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be a general review, nor is it intended to identify key / important components or to delineate the scope of protection of these embodiments. Its only purpose is to present some concepts in a simple form as a preface to the detailed description that follows.

[0006] The utility model adopts the following technical solutions:

[0007] Provided is a heavy-duty dump truck frame, comprising: a left longitudinal beam and a right longitudinal beam, and further comprising: a middle cross beam assembly, a balance shaft cross beam assembly and a tail cross beam assembly located between the left longitudinal beam and the right longitudinal beam and arranged in sequence from the middle of the frame to the rear of the frame;

[0008] The balance shaft crossbeam assembly includes: two first groove-shaped crossbeams arranged symmetrically and two L-shaped upper connecting plates respectively arranged on the upper sides of both ends of the first groove-shaped crossbeams;

[0009] The front end of the L-shaped upper connecting plate extends to the outer side of the front end of the middle cross beam assembly, and the end of the L-shaped upper connecting plate extends to the outer side of the end of the tail cross beam assembly and is flush with the tail ends of the left longitudinal beam and the right longitudinal beam.

[0010] Furthermore, the distance between the left longitudinal beam and the right longitudinal beam at the front of the frame is greater than the distance between the left longitudinal beam and the right longitudinal beam at the middle and rear of the frame; the distance between the left longitudinal beam and the right longitudinal beam at the front of the frame is 930mm-970mm; the distance between the left longitudinal beam and the right longitudinal beam at the middle and rear of the frame is 850mm-865mm.

[0011] Furthermore, the balance shaft beam assembly also includes: two L-shaped lower connecting plates respectively arranged on the lower sides of the two ends of the first groove-shaped beam; the front end of the L-shaped lower connecting plate extends to the position of the outer side of the front end of the middle beam assembly, and the end of the L-shaped lower connecting plate extends to the front of the front end of the tail beam assembly.

[0012] Furthermore, two groups of limiting plates for connecting to the subframe are arranged on the outer sides of the left longitudinal beam and the right longitudinal beam, and each group of limiting plates includes two upper-mounted limiting plates; one group of limiting plates is located between the middle crossbeam assembly and the first groove-shaped crossbeam, and the other group of limiting plates is located between the tail crossbeam assembly and the first groove-shaped crossbeam.

[0013] Furthermore, the heavy-duty dump truck frame further includes: a first crossbeam assembly, a second crossbeam assembly and a third crossbeam assembly are arranged between the left longitudinal beam and the right longitudinal beam and in sequence from the front of the frame to the middle of the frame.

[0014] Furthermore, the third crossbeam assembly includes: two second groove-shaped crossbeams symmetrically arranged; the upper beam arm of the second groove-shaped crossbeam is a plane beam arm, and the lower beam arm of the second groove-shaped crossbeam is an arched beam arm.

[0015] Furthermore, the third crossbeam assembly also includes: two L-shaped upper mounting plates respectively arranged on the upper sides of the two ends of the second groove-shaped crossbeam; the L-shaped upper mounting plate is installed on the inner side of the L-shaped upper connecting plate; a plurality of first circular holes for riveting with the second groove-shaped crossbeam are opened on the transverse plate of the L-shaped upper mounting plate, and a plurality of second circular holes for bolting with the left longitudinal beam and the right longitudinal beam are opened on the vertical plate of the L-shaped upper mounting plate.

[0016] Furthermore, the third crossbeam assembly also includes: two L-shaped lower mounting plates respectively arranged on the lower sides of the two ends of the second groove-shaped crossbeam; the L-shaped lower mounting plate is installed on the inner side of the L-shaped lower connecting plate; a plurality of third circular holes for riveting with the second groove-shaped crossbeam are opened on the transverse plate of the L-shaped lower mounting plate, and a plurality of fourth circular holes for bolting with the left longitudinal beam and the right longitudinal beam are opened on the vertical plate of the L-shaped lower mounting plate.

[0017] Furthermore, the first crossbeam assembly includes: a round tube beam and a casting structure arranged at both ends of the round tube beam; the casting structure is composed of a sleeve sleeved on the end of the round tube beam and a flat plate arranged on the sleeve, and a plurality of fifth circular holes are provided on the flat plate for bolt connection with the left longitudinal beam and the right longitudinal beam.

[0018] Beneficial effects brought by the utility model:

[0019] 1. The utility model can effectively improve the overall strength of the frame and the load-bearing capacity of the tail by optimizing the crossbeam structure and layout, avoiding the frame distortion problem of the dump truck under full load conditions and the sinking and distortion deformation problem of the tail of the frame under lifting conditions;

[0020] 2. The frame of the dump truck of the utility model adopts a variable width structure, which increases the width between the left longitudinal beam and the right longitudinal beam at the front of the frame, thereby meeting the installation space requirements of a large-volume engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the whole vehicle structure of a heavy-duty dump truck;

[0023] Figure 2 It is a schematic diagram of the installation of the power system of a heavy-duty dump truck when it is assembled on the frame of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the heavy-duty dump truck frame of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the first crossbeam assembly of the utility model;

[0026] Figure 5 It is a structural schematic diagram of the third crossbeam assembly of the utility model;

[0027] Figure 6 It is a structural schematic diagram of a balance shaft crossbeam assembly of the utility model. DETAILED DESCRIPTION

[0028] The following is a detailed description of the embodiments of the utility model in conjunction with the accompanying drawings. It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1 As shown, the heavy-duty dump truck includes: a dump truck chassis 1, a hydraulic lifting mechanism 2, a frame 3, U-bolts 4, a subframe 5 and a cargo box 6.

[0030] like Figure 2-6 As shown, in some illustrative embodiments, the present application provides a heavy-duty dump truck frame, namely, the frame 3, which specifically includes: a left longitudinal beam 13, a right longitudinal beam 12, and a first cross beam assembly 10, a second cross beam assembly 11, a third cross beam assembly 14, a middle cross beam assembly 15, a balance shaft cross beam assembly 17, and a tail cross beam assembly 18 installed in sequence from front to rear between the two longitudinal beams.

[0031] The space between the left longitudinal beam 13 and the right longitudinal beam 12 at the front of the frame is the installation space for the engine 7 and the gearbox 8 , and the installation space is located between the second crossbeam assembly 11 and the third crossbeam assembly 14 .

[0032] In this embodiment, the distance between the left longitudinal beam 13 and the right longitudinal beam 12 located at the front of the frame is greater than the distance between the left longitudinal beam 13 and the right longitudinal beam 12 located at the middle and rear of the frame, and the junction between the front of the frame and the middle and rear of the frame is a transition portion 19 with a gradually decreasing width, that is, the width between the left and right longitudinal beams gradually widens from the transition portion 19 to the front until the installation space of the engine is met.

[0033] Specifically, the spacing between the left longitudinal beam 13 and the right longitudinal beam 12 at the front of the frame is 930mm-970mm, and the space here is used to install the engine 7. The spacing between the left longitudinal beam 13 and the right longitudinal beam 12 at the middle and rear of the frame is 850mm-865mm.

[0034] The dump truck frame is the basic part of the whole car, supporting and connecting most of the parts and assemblies of the car. The layout of the existing dump truck is generally to adopt the front-engine drive mode, and the engine is installed between the left and right longitudinal beams of the dump truck. The dump truck frame is generally a frame with equal width in front and back. The distance between the left and right longitudinal beams cannot meet the installation requirements of large-volume engines, resulting in a narrow space and affecting the installation of engine and other parts. The present application adopts a variable-width frame structure, that is, a frame form with a wide front and a narrow rear, which increases the distance between the left longitudinal beam 13 and the right longitudinal beam 12 located at the front of the frame, thereby meeting the installation space requirements of large-volume engines.

[0035] The first cross beam assembly 10, the second cross beam assembly 11 and the third cross beam assembly 14 are arranged in sequence from the front part of the frame to the middle part of the frame. Figure 4 As shown, the first cross beam assembly 10 includes: a round tube beam 101 and a casting structure arranged at both ends of the round tube beam 101, and the casting structure is composed of a sleeve 102 and a plane plate 103. The sleeve 102 is sleeved on the end of the round tube beam 101, and the connection method is welding. The plane plate 103 is arranged on the sleeve 102, and the two are an integrally formed casting structure, and a plurality of fifth circular holes 1031 are provided on the plane plate 103 for bolt connection with the left longitudinal beam 13 and the right longitudinal beam 12.

[0036] The middle cross beam assembly 15, the balance shaft cross beam assembly 17, and the tail cross beam assembly 18 are arranged in sequence from the middle of the frame to the tail of the frame. Figure 6 As shown, the balance shaft crossbeam assembly 17 includes: two first channel-shaped crossbeams 171 , two L-shaped upper connecting plates 172 , and two L-shaped lower connecting plates 173 .

[0037] The two first groove beams 171 are symmetrically arranged back to back, that is, the openings of the first groove beams 171 face both sides. Two L-shaped upper connecting plates 172 are respectively arranged on the upper sides of both ends of the first groove beam 171, and two L-shaped lower connecting plates 173 are respectively arranged on the lower sides of both ends of the first groove beam 171.

[0038] The front ends of the L-shaped upper connecting plate 172 and the L-shaped lower connecting plate 173 are both extended to the outside of the front end of the middle cross beam assembly 15, preferably extending for a distance beyond the front end of the middle cross beam assembly 15. The end of the L-shaped upper connecting plate 172 is extended to the outside of the end of the tail cross beam assembly 18 and is flush with the tail ends of the left longitudinal beam 13 and the right longitudinal beam 12. The end of the L-shaped lower connecting plate 173 is extended to the front of the front end of the tail cross beam assembly 18.

[0039] Two sets of limit plates for connecting with the subframe 5 are arranged on the outer side surfaces of the left longitudinal beam 13 and the right longitudinal beam 12, and each set of limit plates includes two upper limit plates 16. One set of limit plates is located between the middle cross beam assembly 15 and the first groove cross beam 171, and the other set of limit plates is located between the tail cross beam assembly 18 and the first groove cross beam 171.

[0040] The above structural design realizes that the middle crossbeam assembly 15 and the tail crossbeam assembly 18 are installed on the left longitudinal beam 13 and the right longitudinal beam 12 through the balance shaft crossbeam assembly 17, so that the middle crossbeam assembly 15, the balance shaft crossbeam assembly 17, and the tail crossbeam assembly 18 form a whole, and are equipped with four upper limit plates 16 on the outer sides of the left longitudinal beam 13 and the right longitudinal beam 12, which optimizes the structure and layout of the crossbeams, improves the strength of the middle and rear parts of the frame and the load-bearing capacity of the rear part, and avoids the frame distortion problem of the dump truck under full load conditions and the frame sinking and distortion deformation problem of the rear part under lifting conditions.

[0041] like Figure 5 As shown, the third beam assembly 14 includes: two second groove beams 142, two L-shaped upper mounting plates 141, and two L-shaped lower mounting plates 143. The two L-shaped upper mounting plates 141 are respectively arranged on the upper sides of both ends of the second groove beam 142; the two L-shaped lower mounting plates 143 are respectively arranged on the lower sides of both ends of the second groove beam 142.

[0042] The two second groove beams 142 are symmetrically arranged back to back, that is, the openings of the second groove beams 142 face both sides. The upper beam arm of the second groove beam 142 is a plane beam arm, and the lower beam arm of the second groove beam 142 is an arched beam arm, which has higher strength and is not easy to deform.

[0043] The L-shaped upper mounting plate 141 is mounted on the inner side of the L-shaped upper connecting plate 172. Specifically, the transverse plate 1411 of the L-shaped upper mounting plate is provided with a plurality of first circular holes 1413 for riveting with the second grooved cross beam 142, and the vertical plate 1412 of the L-shaped upper mounting plate is provided with a plurality of second circular holes 1414 for bolting with the left longitudinal beam 13 and the right longitudinal beam 12.

[0044] The L-shaped lower mounting plate 143 is mounted on the inner side of the L-shaped lower connecting plate 173. Specifically, a plurality of third circular holes for riveting with the second grooved cross beam 142 are provided on the transverse plate 1431 of the L-shaped lower mounting plate, and a plurality of fourth circular holes 1434 for bolting with the left longitudinal beam 13 and the right longitudinal beam 12 are provided on the vertical plate 1432 of the L-shaped lower mounting plate.

[0045] The first crossbeam assembly 10 adopts a round tube beam structure, and the third crossbeam assembly 14 adopts a back-to-back crossbeam structure. The bending and torsion resistance of the front part of the frame is improved through the combined structure of the left longitudinal beam 13, the right longitudinal beam 12, the first crossbeam assembly 10 and the third crossbeam assembly 14. At the same time, the middle crossbeam assembly 15, the balance shaft crossbeam assembly 17 and the tail crossbeam assembly 18 are integrated through the L-shaped upper connecting plate 172 and the L-shaped lower connecting plate 173 in the balance shaft crossbeam assembly 17, and then equipped with four upper limit plates 16, which improves the strength of the middle and rear parts of the frame and the load bearing of the tail, avoiding the frame distortion problem under full load conditions and the frame tail sinking and distortion deformation problems under lifting conditions.

[0046] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model 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 heavy-duty dump truck frame, comprising: The left longitudinal beam and the right longitudinal beam are characterized by further comprising: a middle cross beam assembly, a balance shaft cross beam assembly and a tail cross beam assembly located between the left longitudinal beam and the right longitudinal beam and arranged in sequence from the middle of the frame to the rear of the frame; The balance shaft crossbeam assembly includes: two first groove-shaped crossbeams arranged symmetrically and two L-shaped upper connecting plates respectively arranged on the upper sides of both ends of the first groove-shaped crossbeams; The front end of the L-shaped upper connecting plate extends to the outer side of the front end of the middle cross beam assembly, and the end of the L-shaped upper connecting plate extends to the outer side of the end of the tail cross beam assembly and is flush with the tail ends of the left longitudinal beam and the right longitudinal beam.

2. A heavy-duty dump truck frame according to claim 1, characterized in that: The distance between the left longitudinal beam and the right longitudinal beam located at the front part of the frame is greater than the distance between the left longitudinal beam and the right longitudinal beam located at the middle and rear part of the frame; The distance between the left longitudinal beam and the right longitudinal beam located at the front of the frame is 930 mm to 970 mm; The distance between the left longitudinal beam and the right longitudinal beam located at the middle and rear part of the frame is 850mm-865mm.

3. A heavy-duty dump truck frame according to claim 2, characterized in that: The balance shaft crossbeam assembly further includes: two L-shaped lower connecting plates respectively arranged at the lower sides of both ends of the first groove-shaped crossbeam; The front end of the L-shaped lower connecting plate is extended to the outer side of the front end of the middle cross beam assembly, and the rear end of the L-shaped lower connecting plate is extended to the front of the front end of the tail cross beam assembly.

4. A heavy-duty dump truck frame according to claim 3, characterized in that: Two groups of limiting plates for connecting with the subframe are arranged on the outer side surfaces of the left longitudinal beam and the right longitudinal beam, and each group of limiting plates comprises two upper-mounted limiting plates; one group of limiting plates is located between the middle crossbeam assembly and the first groove-shaped crossbeam, and the other group of limiting plates is located between the tail crossbeam assembly and the first groove-shaped crossbeam.

5. A heavy-duty dump truck frame according to claim 4, characterized in that: Also includes: A first crossbeam assembly, a second crossbeam assembly and a third crossbeam assembly are arranged between the left longitudinal beam and the right longitudinal beam and in sequence from the front portion of the frame to the middle portion of the frame.

6. A heavy-duty dump truck frame according to claim 5, characterized in that: The third crossbeam assembly comprises: two second groove-shaped crossbeams symmetrically arranged; the upper beam arm of the second groove-shaped crossbeam is a plane beam arm, and the lower beam arm of the second groove-shaped crossbeam is an arched beam arm.

7. A heavy-duty dump truck frame according to claim 6, characterized in that: The third crossbeam assembly further includes: two L-shaped upper mounting plates respectively disposed on the upper sides of both ends of the second groove-shaped crossbeam; The L-shaped upper mounting plate is mounted on the inner side of the L-shaped upper connecting plate; The transverse plate of the L-shaped upper mounting plate is provided with a plurality of first circular holes for riveting with the second groove-shaped cross beam, and the vertical plate of the L-shaped upper mounting plate is provided with a plurality of second circular holes for bolting with the left longitudinal beam and the right longitudinal beam.

8. A heavy-duty dump truck frame according to claim 7, characterized in that: The third crossbeam assembly further includes: two L-shaped lower mounting plates respectively disposed at the lower sides of both ends of the second groove-shaped crossbeam; The L-shaped lower mounting plate is mounted on the inner side of the L-shaped lower connecting plate; The transverse plate of the L-shaped lower mounting plate is provided with a plurality of third circular holes for riveting with the second groove-shaped cross beam, and the vertical plate of the L-shaped lower mounting plate is provided with a plurality of fourth circular holes for bolting with the left longitudinal beam and the right longitudinal beam.

9. A heavy-duty dump truck frame according to claim 8, characterized in that: The first crossbeam assembly includes: a round tube beam and a casting structure arranged at both ends of the round tube beam; the casting structure is composed of a sleeve sleeved on the end of the round tube beam and a flat plate arranged on the sleeve, and a plurality of fifth circular holes for bolt connection with the left longitudinal beam and the right longitudinal beam are provided on the flat plate.

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