Push rod support and off-highway dumper

Abstract

The utility model provides a push rod support, which is used for mounting a thrust rod of an off-highway dumper and comprises a bottom plate, two end side beams, two middle side beams, two first connecting beams and two second connecting beams, wherein the two end side beams, the two middle side beams, the two first connecting beams and the two second connecting beams are convexly arranged on the same side surface of the bottom plate; the two end side beams are connected to the two ends of the bottom plate respectively, the two middle side beams are arranged between the two end side beams, the two first connecting beams are connected between the adjacent end side beams and the middle side beams respectively, and the second connecting beam is connected between the two middle side beams. A fillet-shaped first transition part is formed at the joint of the bottom plate and the first connecting beam, and a fillet-shaped second transition part is formed at the joint of the bottom plate and the second connecting beam. According to the push rod support, stress concentration can be avoided through the arrangement of the transition part, the pressing plate pin and the thrust rod are locked through the structure of the limiting block and the cover plate, bolts on the pressing plate pin are omitted, the situation that the bolts are loosened and broken due to load impact in the vehicle running process is avoided, and the service life of the push rod support is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery, and in particular to a push rod support and an off-highway dump truck having the aforementioned push rod support. Background Technology

[0002] Off-highway dump trucks are heavy-duty vehicles specifically designed for transporting and unloading materials in off-road environments. They are commonly used in mining, construction, and large-scale earthmoving projects, featuring large payload capacity and powerful engines to handle complex terrain and heavy-duty work.

[0003] Currently, most off-highway vehicles use a V-type pushrod structure. Bolts are installed on the upper pushrod of this structure. However, due to poor road surface smoothness, heavy-load uphill driving, and sharp bends, the bolts are subjected to shear forces and plastic deformation of the nut contact surface due to vibration during vehicle operation. This can lead to nut loosening, bolt falling off, or shear breakage, increasing maintenance costs and reducing vehicle uptime. Some companies have eliminated bolts on the pushrod to avoid this loosening problem, using pin-type pushrod supports instead. However, the current support uses a single bolt directly fixed to the side stiffener plate. While simple and easy to install, this structure easily causes stress concentration at the threaded holes in the side plate. The single-bolt structure is prone to bolt loosening and falling off during vehicle operation due to vibration and alternating lateral and longitudinal loads. Therefore, a pushrod structure that reduces stress concentration and prevents bolt breakage due to shear forces is needed. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a push rod support and an off-highway dump truck that can reduce stress concentration and prevent bolts from loosening or falling off.

[0005] One embodiment of this utility model provides a push rod support for installing the push rod of an off-highway dump truck. The push rod support includes a base plate and two end side beams, two middle side beams, two first connecting beams, and a second connecting beam protruding from the same side surface of the base plate. The two end side beams are respectively connected to both ends of the base plate, the two middle side beams are disposed between the two end side beams, the two first connecting beams are respectively connected between adjacent end side beams and middle side beams, and the second connecting beam is connected between the two middle side beams. A rounded first transition portion is formed at the connection between the base plate and the first connecting beam, and a rounded second transition portion is formed at the connection between the base plate and the second connecting beam.

[0006] Furthermore, the height by which the first connecting beam and the second connecting beam protrude from the bottom plate is less than the height by which the end side beam and the middle side beam protrude from the bottom plate.

[0007] Furthermore, rounded third transition portions are formed at both ends of the first connecting beam, and a hollow portion for accommodating the thrust rod is formed in the middle of the first connecting beam.

[0008] Furthermore, the end side beam has a through end shaft hole for mounting the thrust rod, and the middle side beam has a through middle shaft hole for mounting the thrust rod.

[0009] Furthermore, a first pivot collar is formed on the side surface of the end side beam facing the middle side beam, protruding around the end shaft hole, and a second pivot collar is formed on the side surface of the middle side beam facing the end side beam, protruding around the middle shaft hole.

[0010] Furthermore, a third pivot collar is formed on the outer surface of the end side beam around the end shaft hole.

[0011] Furthermore, the push rod support also includes a pressure plate pin, which includes a pin that passes through the end shaft hole and the middle shaft hole, and a pressure plate provided at one end of the pin. The third pivot collar extends toward the base plate to form a connection area, and at least two protruding limiting blocks are provided on the connection area. A groove is formed between the two limiting blocks, and the pressure plate is embedded in the groove.

[0012] Furthermore, the push rod support also includes a cover plate, which is detachably connected to two limit blocks.

[0013] Furthermore, multiple mounting holes are provided on the base plate, with the mounting holes located on both sides of the first connecting beam and one side of the second connecting beam.

[0014] An off-highway dump truck includes a thrust rod assembly, a middle and rear axle, and the aforementioned thrust rod support. The base plate of the thrust rod support is mounted on the middle and rear axle. The thrust rod assembly includes a rod body and a rod head connected to the end of the rod body. The rod head is rotatably mounted between the end side beam and the middle side beam of the thrust rod support via a pin.

[0015] This utility model provides a push rod support, including a base plate, two end side beams, two middle side beams, two first connecting beams, and a second connecting beam. A first transition portion is formed at the connection between the base plate and the first connecting beams, a second transition portion is formed at the connection between the base plate and the second connecting beam, and a third transition portion is formed between the first connecting beam and the end side beams and the middle side beam on both sides. The first, third, and second transition portions help avoid stress concentration. Additionally, two limiting blocks are provided on the outer side of the end side beams, forming a groove between them. A pressure plate pin is embedded in the groove, and a cover plate is detachably connected to the limiting blocks to fix the pressure plate pin in the groove. By using the limiting blocks and cover plate structure to lock the pressure plate pin, the bolts on the pressure plate pin are eliminated, preventing the bolts on the pressure plate pin from directly bearing the load impact transmitted by the pressure plate pin. This avoids the bolts loosening or breaking due to load impact during vehicle operation, extending the service life of the push rod support. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of a push rod support provided in a preferred embodiment of the present invention.

[0018] Figure 2 for Figure 1 The diagram shows a top view of the push rod support.

[0019] Figure 3 For having Figure 1 The diagram shows a non-highway dump truck with a pushrod support.

[0020] In the figure: base plate 1; end side beam 2; end shaft hole 21; first pivot collar 211; third pivot collar 212; limiting block 22; slot 23; middle side beam 3; middle shaft hole 31; second pivot collar 311; first connecting beam 4; first transition part 41; third transition part 42; hollow part 43; second connecting beam 5; second transition part 51; pressure plate pin 6; pin shaft 61; pressure plate 62; cover plate 7; mounting hole 8; thrust rod assembly 9; rod body 91; rod head 92; casting angle 10; bolt 11; screw hole 110. Detailed Implementation

[0021] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] like Figures 1 to 3As shown, one embodiment of this application provides a push rod support for mounting a push rod 9 of an off-highway dump truck. The push rod support includes a base plate 1 and two end side beams 2, two middle side beams 3, two first connecting beams 4, and a second connecting beam 5 protruding from the same side surface of the base plate 1. The two end side beams 2 are respectively connected to the two ends of the base plate 1, the two middle side beams 3 are disposed between the two end side beams 2, the two first connecting beams 4 are respectively connected between adjacent end side beams 2 and middle side beams 3, and the second connecting beam 5 is connected between the two middle side beams 3. A rounded first transition portion 41 is formed at the connection between the base plate 1 and the first connecting beam 4, and a rounded second transition portion 51 is formed at the connection between the base plate 1 and the second connecting beam 5.

[0023] The push rod support includes a base plate 1, two end side beams 2, two middle side beams 3, two first connecting beams 4, and a second connecting beam 5. The base plate 1 is roughly trapezoidal flat plate, and the end side beams 2 and middle side beams 3 are roughly triangular flat plates and are set perpendicular to the base plate 1. The two end side beams 2 are respectively connected to the two hypotenuses of the base plate 1, and the two middle side beams 3 are set between the two end side beams 2 and are parallel to the adjacent end side beams 2, so that the spacing between the two middle side beams 3 is unequal.

[0024] Both the first connecting beam 4 and the second connecting beam 5 are protruding ribs from the base plate 1. The height of the first connecting beam 4 and the second connecting beam 5 protruding from the base plate 1 is less than the height of the end side beams 2 and the middle side beams 3 protruding from the base plate 1. The first connecting beam 4 connects between adjacent end side beams 2 and middle side beams 3, and the second connecting beam 5 connects between two middle side beams 3 on the side where the spacing between the two middle side beams 3 is close, so that the second connecting beam 5 forms a triangular boss. In addition, the connection points between the end side beams 2 and the middle side beams 3 and the base plate 1 are all formed with casting angles 10. The connection point between the first connecting beam 4 and the base plate 1 forms a rounded first transition portion 41, and the first connecting beam 4 and the end side beams 2 and the middle side beams 3 on both sides form a rounded third transition portion 42. The middle part of the first connecting beam 4 is recessed towards the base plate 1 relative to the two sides, forming a hollow portion 43 for accommodating the thrust rod 9. A rounded transition section 51 is formed at the connection between the second connecting beam 5 and the base plate 1. The first transition section 41, the third transition section 42, the second transition section 51, and the casting angle 10 eliminate the sharp points at the corners of the irregular surface of the support, thus avoiding stress concentration.

[0025] The middle side beam 3 has a through-hole 31 for mounting the thrust rod 9. This hole is located at the end of the middle side beam 3 furthest from the base plate 1. A second pivot collar 311 is formed on the surface of the middle side beam 3 facing the end side beam 2, and this second pivot collar 311 protrudes around the middle hole 31. The end side beam 2 has a through-hole 21 for mounting the thrust rod 9. This hole is located at the end of the end side beam 2 furthest from the base plate 1. A first pivot collar 211 is formed on the surface of the end side beam 2 facing the middle side beam 3, and this first pivot collar 211 protrudes around the end hole 21. Additionally, a third pivot collar 212 is formed on the outer surface of the end side beam 2 around the end hole 21. The first pivot collar 211, second pivot collar 311, and third pivot collar 212 all encircle the pin 61 and serve as a transition and buffer.

[0026] The push rod support also includes a pressure pin 6 and a cover plate 7. The pressure pin 6, which restricts the movement of the push rod 9, includes a pin 61 and a pressure plate 62. The cover plate 7 restricts the lateral freedom of the pressure pin 6. The third pivot collar 212 extends toward the base plate 1 to form a connection area. At least two protruding limiting blocks 22 are provided on the connection area, and a groove 23 is formed between the two limiting blocks 22. The pressure plate 62 of the pressure pin 6 is embedded in the groove 23. At the same time, through holes are provided at both ends of the cover plate 7, and screw holes 110 corresponding to the through holes of the cover plate 7 are provided on both limiting blocks 22. The connector is detachably connected to the limiting blocks 22 through the through holes of the cover plate 7 to fix the pressure plate 62 of the pressure pin 6 in the groove 23. Further, the connector is preferably a bolt 11. The two ends of the pin 61 of the pressure plate pin 6 pass through the middle shaft hole 31 and the end shaft hole 21 respectively, and are locked by the pressure plate 62 on the outside of the end side beam 2. The pressure plate 62 is restricted by the limiting block 22 and the cover plate 7, and is embedded and locked in the slot 23, thereby achieving the purpose of restricting the thrust rod 9. The push rod support adopts the structure of the limiting block 22 and the cover plate 7 to replace the original structure of the bolt 11 directly locking the pressure plate pin 6, eliminating the bolt 11 on the body of the pressure plate pin 6. This prevents the bolt 11 installed on the pressure plate pin 6 from directly bearing the load impact transmitted by the pressure plate pin 6, avoiding the situation where the bolt 11 is loosened or broken due to load impact during vehicle operation, and greatly extending its service life.

[0027] The base plate 1 has multiple mounting holes 8. The connectors use the mounting holes 8 to install the push rod support on the off-highway dump truck. The mounting holes 8 are respectively located on both sides of the first connecting beam 4 and the opening side of the second connecting beam 5. The mounting holes 8 on both sides of the first connecting beam 4 are located between adjacent end side beams 2 and middle side beams 3. The mounting holes 8 on one side of the second connecting beam 5 are located between two middle side beams 3. There are more mounting holes 8 on both sides of the first connecting beam 4 than on one side of the second connecting beam 5.

[0028] In summary, the push rod support provided by the above-described embodiments of this utility model includes a base plate 1, two end side beams 2, two middle side beams 3, two first connecting beams 4, and a second connecting beam 5. A first transition portion 41 is formed at the connection between the base plate 1 and the first connecting beam 4, a second transition portion 51 is formed at the connection between the base plate 1 and the second connecting beam 5, and a third transition portion 42 is formed between the first connecting beam 4 and the end side beams 2 and the middle side beam 3 on both sides. The arrangement of the first transition portion 41, the third transition portion 42, and the second transition portion 51 helps to eliminate the sharp points at the corners of the irregular surface of the support, thus avoiding stress concentration. In addition, two limiting blocks 22 are provided on the connecting area on the outer side of the end side beams 2, and a groove 23 is formed between the two limiting blocks 22. The pressure plate 62 of the pressure plate pin 6 is embedded in the groove 23, and the cover plate 7 is detachably connected to the limiting block 22 through a connector to fix the pressure plate pin 6 in the groove 23. The structure of limiting block 22 and cover plate 7 is used to lock the pressure plate pin 6, eliminating the bolt 11 on the pressure plate pin 6. This prevents the bolt 11 on the pressure plate pin 6 from directly bearing the load impact transmitted by the pressure plate pin 6, avoiding the accident of the bolt 11 loosening or breaking due to load impact during vehicle operation, and greatly extending the service life of the push rod support.

[0029] like Figure 3 As shown, another embodiment of this utility model provides an off-highway dump truck, including a thrust rod assembly 9, a middle and rear axle, and the aforementioned thrust rod support; the base plate 1 of the thrust rod support is mounted on the middle and rear axle, and the connecting piece connects the thrust rod support to the middle and rear axle through the mounting hole 8 on the base plate 1; one end of the thrust rod assembly 9 is connected to the middle and rear axle of the dump truck through the thrust rod support, and the other end is connected to the frame of the off-highway dump truck. When the vehicle moves, the middle and rear axle drives the thrust rod assembly 9 to rotate around the pin of the thrust rod support within a certain angle range, thereby controlling the operation of the frame.

[0030] The thrust rod assembly 9 includes a rod body 91 and a rod head 92. The rod head 92 is connected to the end of the rod body 91. Preferably, there are two thrust rods 9. The rod head 92 is sleeved on the pin 61 of the pressure plate pin 6 and is rotatably mounted between the end side beam 2 and the middle side beam 3 of the push rod support via the pin 61. The pin 61 is restricted by the pressure plate 62, which is locked by the limiting block 22 and the cover plate 7, thereby locking the thrust rod 9. The push rod support uses the structure of the limiting block 22 and the cover plate 7 to lock the pressure plate pin 6 and the thrust rod 9, so that the bolt 11 installed on the pressure plate pin 6 no longer directly bears the load impact transmitted by the pressure plate pin 6. This avoids the bolt 11 from loosening or breaking due to load impact during the operation of the dump truck, improves vehicle uptime, and reduces the manpower and material costs of maintenance.

[0031] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A push rod support for mounting a push rod of an off-highway dump truck, characterized by, The push rod support includes a base plate and two end side beams, two middle side beams, two first connecting beams, and a second connecting beam protruding from the same side surface of the base plate. The two end side beams are respectively connected to the two ends of the base plate, the two middle side beams are disposed between the two end side beams, the two first connecting beams are respectively connected between adjacent end side beams and middle side beams, and the second connecting beam is connected between the two middle side beams. A rounded first transition portion is formed at the connection between the base plate and the first connecting beam, and a rounded second transition portion is formed at the connection between the base plate and the second connecting beam.

2. The putter support of claim 1, wherein, The height by which the first connecting beam and the second connecting beam protrude from the base plate is less than the height by which the end side beam and the middle side beam protrude from the base plate.

3. The push rod support as described in claim 1, characterized in that, Both ends of the first connecting beam have rounded corner third transition portions, and the middle of the first connecting beam has a hollow portion for accommodating the thrust rod.

4. The putter support of claim 1, wherein, The end side beam has an end shaft hole for mounting the thrust rod, and the middle side beam has a middle shaft hole for mounting the thrust rod.

5. The putter support of claim 4, wherein, A first pivot collar is formed on the side surface of the end side beam facing the middle side beam, protruding around the end shaft hole; a second pivot collar is formed on the side surface of the middle side beam facing the end side beam, protruding around the middle shaft hole.

6. The putter support of claim 5, wherein, A third pivot collar is formed on the outer surface of the end side beam around the end shaft hole.

7. The putter support of claim 6, wherein, The push rod support also includes a pressure plate pin, which includes a pin that passes through the end shaft hole and the middle shaft hole and a pressure plate disposed at one end of the pin. The third pivot collar extends toward the base plate to form a connection area. At least two protruding limiting blocks are provided on the connection area, and a slot is formed between the two limiting blocks. The pressure plate is embedded in the slot.

8. The putter support of claim 7, wherein, The push rod support also includes a cover plate, which is detachably connected to the two limiting blocks.

9. The putter support of claim 1, wherein, The base plate has multiple mounting holes, which are respectively located on both sides of the first connecting beam and one side of the second connecting beam.

10. An off-highway dump truck characterized by, The device includes a thrust rod assembly, a middle and rear axle, and a push rod support as described in any one of claims 1-9. The base plate of the push rod support is mounted on the middle and rear axle. The thrust rod assembly includes a rod body and a rod head connected to the end of the rod body. The rod head is rotatably mounted between the end side beam and the middle side beam of the push rod support via the pin.

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