Frame rear tailstock, frame and vehicle

Abstract

The invention provides a frame rear tailstock, a frame and a vehicle, the frame rear tailstock is installed and fixed at the tail end of the frame, the frame rear tailstock comprises a first tailstock, a second tailstock, a mounting seat and a tie rod, the first tailstock and the second tailstock are distributed at an interval and are welded to the mounting seat, the mounting seat is provided with a cavity, the mounting seat is welded to the frame, and the tie rod is arranged in the cavity. The transverse pull rod is welded to the mounting base, and the two ends of the transverse pull rod are welded to the first tailstock and the second tailstock correspondingly. According to the frame rear tail seat, the frame and the vehicle, the first tail seat, the second tail seat, the mounting seat and the transverse pull rod are connected into a whole through welding, and the overall finished product quality of the rear tail seat is improved; the cavity is designed on the mounting seat, so that the strength and the rigidity of the structure can be improved under the condition that the weight is not obviously increased, deformation caused by external force can be effectively resisted, and the shape and the function of the rear tailstock can be kept in the long-time use process; the manufacturability of the rear tailstock and the frame is improved, and the manufacturing cost of the frame is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a frame rear tail seat, a frame and a vehicle. Background Art

[0002] Mining dump trucks are key equipment in open-pit mining and large-scale earthwork construction. They are professional equipment used for ore or earthwork transportation, with the characteristics of heavy load and high work efficiency. At present, mining dump trucks are developing towards large-scale and giant, and the requirements for the load-bearing structure strength of mining dump trucks are becoming more and more stringent. The frame of the mining dump truck is the base of the whole vehicle, and the loads of other components and cargo are applied to the frame, causing the frame to bear the effects of gravity, impact load, torsion load and alternating load at the same time. Therefore, the frame is required to have good rigidity, strength and fatigue resistance.

[0003] The frame of a mining dump truck consists of a pair of longitudinal beams and multiple cross beams, which together form a closed structure of the frame. The rear tailstock is one of the cross beams, which is located at the rear of the frame, connecting the left and right longitudinal beams and closing the entire frame. The upper part of the rear tailstock is hinged to the cargo compartment as the rotation center of the cargo compartment, and the lower part is connected to the rear axle vertically and laterally with two rear suspension cylinders and a tie rod. At present, the rear tailstock of mining dump trucks is mostly formed by casting. However, the quality of castings prepared by casting is difficult to control and the manufacturing cost is high. In addition, when the casting-formed rear tailstock is welded to the left and right longitudinal beams of the frame, the processability is poor, and heating is required before welding and insulation is required after welding. Summary of the invention

[0004] The invention aims to provide a frame rear tailstock, a frame and a vehicle, so as to solve the problems of uneven quality of the casting finished product of the rear tailstock, high production cost and poor processability.

[0005] The present invention provides a rear tailstock of a vehicle frame, which is installed and fixed at the rear end of the vehicle frame. The rear tailstock of the vehicle frame comprises a first tailstock, a second tailstock, a mounting seat and a transverse tie rod. The first tailstock and the second tailstock are distributed at intervals and are both welded to the mounting seat. The mounting seat has a cavity, the mounting seat is welded to the vehicle frame, the transverse tie rod is welded to the mounting seat, and two ends of the transverse tie rod are respectively welded to the first tailstock and the second tailstock.

[0006] In one embodiment of the present invention, the mounting seat includes an outer plate and an inner plate, the outer plate and the inner plate are welded together, and the cavity is enclosed between the outer plate and the inner plate.

[0007] In an embodiment of the present invention, the mounting seat further comprises inner ribs, wherein the inner ribs are located in the cavity and are respectively welded to the outer plate and the inner plate.

[0008] In one embodiment of the present invention, the outer plate is a bent plate, and the outer plate includes a first part, a second part and a third part connected in sequence, the first part and the second part are connected by an arc transition, and the second part and the third part are connected by an arc transition; the inner plate is a bent plate, and the inner plate includes a first section, a second section and a third section connected in sequence, the first section and the second section are connected by an arc transition, and the second section and the third section are connected by an arc transition.

[0009] In one embodiment of the present invention, a side of the first part away from the second part is recessed toward the second part, a side of the third part away from the second part is recessed toward the second part, and opposite sides of the inner panel are fixedly connected to the first part and the third part along the recessed parts, respectively.

[0010] In one embodiment of the present invention, the first tailstock includes a first support plate, a first connecting plate, a first carriage connecting sleeve and a first axle connecting sleeve, the number of the first support plates is two, the two first support plates are arranged opposite to each other, and the two first support plates are connected to the outer plate, the two ends of the first connecting plate are respectively connected to the two first support plates, one end of the first carriage connecting sleeve passes through one of the first support plates, and the other end passes through the other first support plate, and one end of the first axle connecting sleeve passes through one of the first support plates, and the other end passes through the other first support plate.

[0011] In one embodiment of the present invention, the second tailstock includes a second support plate, a second connecting plate, a second carriage connecting sleeve and a second axle connecting sleeve, the number of the second support plates is two, the two second support plates are arranged opposite to each other, and the two second support plates are connected to the outer plate, the two ends of the second connecting plate are respectively connected to the two second connecting plates, one end of the second carriage connecting sleeve passes through one second support plate, and the other end passes through the other second support plate, and one end of the second axle connecting sleeve passes through one second support plate, and the other end passes through the other second support plate.

[0012] In one embodiment of the present invention, the rear tailstock of the frame also includes a first reinforcing plate and a second reinforcing plate, wherein the first reinforcing plate is located between the two first support plates, and the first reinforcing plate is fixedly connected to the two first support plates and the outer plate at the same time, and the second reinforcing plate is located between the two second support plates, and the second reinforcing plate is fixedly connected to the two second support plates and the outer plate at the same time.

[0013] The present invention also provides a frame, comprising a first longitudinal beam, a second longitudinal beam and the frame rear tail seat as described above, wherein the first longitudinal beam and the second longitudinal beam are arranged in parallel and spaced apart, and one end of the first longitudinal beam and one end of the second longitudinal beam are respectively fixedly connected to the frame rear tail seat.

[0014] The present invention also provides a vehicle, comprising the frame as described above.

[0015] In the frame rear tailstock, frame and vehicle of the present invention, the first tailstock, the second tailstock, the mounting seat and the cross-tie rod are connected as a whole by welding, and the overall finished product quality of the rear tailstock is improved; by designing the mounting seat as a cavity, the strength and rigidity of the structure can be improved without significantly increasing the weight, which can reduce the dead weight as much as possible while ensuring the performance for vehicle design, improve fuel efficiency and vehicle performance, and at the same time, can effectively resist deformation caused by external forces, ensuring that the rear tailstock maintains its shape and function during long-term use; the processability of the rear tailstock and the frame is improved, and the manufacturing cost of the frame is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic structural diagram of a rear tailstock of a frame according to an embodiment of the present invention.

[0017] Figure 2 The figure is a partial structural diagram of a frame rear tailstock installed on a frame according to an embodiment of the present invention.

[0018] Figure 3 The present invention is a schematic structural diagram of a rear tailstock of a vehicle frame installed on a vehicle frame according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] The present invention provides a rear tailstock of a frame, which is installed and fixed at the rear end of the frame. Figure 1-2 As shown, the rear tailstock of the frame of an embodiment includes a first tailstock 11, a second tailstock 12, a mounting seat 13 and a tie rod 14. The first tailstock 11 and the second tailstock 12 are spaced apart and are both welded to the mounting seat 13. The mounting seat 13 has a cavity 131. The mounting seat 13 is welded to the frame, the tie rod 14 is welded to the mounting seat 13, and the two ends of the tie rod 14 are respectively welded to the first tailstock 11 and the second tailstock 12.

[0021] In the rear tailstock of the frame of the present invention, the first tailstock 11, the second tailstock 12, the mounting seat 13 and the cross-tie rod 14 are connected as a whole by welding, so that the overall finished product quality of the rear tailstock is improved, the processability of the rear tailstock and the frame is improved, and the manufacturing cost of the frame is reduced; by designing a cavity 131 on the mounting seat 13, the strength and rigidity of the structure can be improved without significantly increasing the weight. For vehicle design, it can reduce the dead weight as much as possible while ensuring performance, improve fuel efficiency and vehicle performance, and at the same time, it can effectively resist deformation caused by external forces, ensuring that the rear tailstock maintains its shape and function during long-term use; the provision of the cavity 131 can change and optimize the stress distribution, so that the load can be more evenly distributed on the entire structure, reduce local stress concentration, and thus extend the service life.

[0022] In this embodiment, the mounting seat 13 includes an outer plate 132, an inner plate 133 and an inner rib 134. The outer plate 132 and the inner plate 133 are welded and connected, and a cavity 131 is enclosed between the outer plate 132 and the inner plate 133. The inner rib 134 is located in the cavity 131 and is welded and connected to the outer plate 132 and the inner plate 133 respectively. The inner rib 134 is welded in the cavity 131 for reinforcement.

[0023] In this embodiment, the outer plate 132 is a bent plate. The outer plate 132 includes a first portion 1321, a second portion 1322 and a third portion 1323 connected in sequence, the first portion 1321 and the second portion 1322 are connected by a circular arc transition, and the second portion 1322 and the third portion 1323 are connected by a circular arc transition to reduce stress concentration; the inner plate 133 is a bent plate, the inner plate 133 includes a first section 1331, a second section 1332 and a third section 1333 connected in sequence, the first section 1331 and the second section 1332 are connected by a circular arc transition, and the second section 1332 and the third section 1333 are connected by a circular arc transition to reduce stress concentration.

[0024] In this embodiment, the side of the first part 1321 away from the second part 1322 is recessed toward the direction close to the second part 1322 to form a notch; the side of the third part 1323 away from the second part 1322 is recessed toward the direction close to the second part 1322 to form a notch. It should be noted that in this embodiment, the first part 1321 and the second part 1322 are the same in appearance and structure, that is, the size of the notch on the first part 1321 and the second part 1322 is also the same. The edge of the notch is arc-shaped. The opposite sides of the inner plate 133 are fixedly connected to the first part 1321 and the third part 1323 along the recessed part respectively. In the process of installation and connection with the frame, the frame is fixedly connected to the entities on both sides of the notch of the first part 1321 and the entities on both sides of the notch of the second part 1321. The first part 1321 and the second part 1322 set in this way can reduce weight and save a certain amount of material cost. At the same time, it can also reduce stress concentration to a certain extent.

[0025] In this embodiment, the first tailstock 11 includes a first support plate 111, a first connecting plate 112, a first carriage connecting sleeve 113 and a first axle connecting sleeve 114. The number of the first support plates 111 is two, the two first support plates 111 are arranged opposite to each other, and the two first support plates 111 are connected to the outer plate 132. For example, the two first support plates 111 are welded to the outer plate 132. The two ends of the first connecting plate 112 are respectively connected to the two first support plates 111 to improve the overall rigidity of the two first support plates 111. For example, the two ends of the first connecting plate 112 are respectively welded to the two first support plates 111. One end of the first carriage connecting sleeve 113 passes through one first support plate 111, and the other end passes through the other first support plate 111. One end of the first axle connecting sleeve 114 passes through one first support plate 111, and the other end passes through the other first support plate 111. The first carriage connecting sleeve 113 is used to connect with the carriage (not shown), and the first axle connecting sleeve 114 is used to connect with the axle (not shown).

[0026] In this embodiment, the second tailstock 12 includes a second support plate 121, a second connecting plate 122, a second carriage connecting sleeve 123 and a second axle connecting sleeve 124. The number of the second support plates 121 is two, the two second support plates 121 are arranged opposite to each other, and the two second support plates 121 are connected to the outer plate 132. For example, the two second support plates 121 are welded to the outer plate 132. The two ends of the second connecting plate 122 are respectively connected to the two second connecting plates 122. For example, the two ends of the second connecting plate 122 are respectively welded to the two second connecting plates 122. One end of the second carriage connecting sleeve 123 passes through one second support plate 121, and the other end passes through another second support plate 121. One end of the second axle connecting sleeve 124 passes through one second support plate 121, and the other end passes through another second support plate 121. Among them, the second carriage connecting sleeve 123 is used to connect with the carriage (not shown), and the second axle connecting sleeve 124 is used to connect with the axle (not shown).

[0027] In this embodiment, the rear seat of the frame further includes a first reinforcing plate 15 and a second reinforcing plate 16, wherein the first reinforcing plate 15 is located between the two first support plates 111, and the first reinforcing plate 15 is fixedly connected to the two first support plates 111 and the outer plate 132 at the same time, so as to improve the overall connection strength of the rear seat of the frame. The second reinforcing plate 16 is located between the two second support plates 121, and the second reinforcing plate 16 is fixedly connected to the two second support plates 121 and the outer plate 132 at the same time, so as to improve the overall connection strength of the rear seat of the frame.

[0028] In this embodiment, the tie rod 14 is arranged on the left and right sides of the frame to balance the left and right suspension systems, ensuring that the vehicle can maintain good balance and stability when turning, thereby enhancing the overall stability of the frame. This helps to reduce the roll and sway of the vehicle caused by external forces (such as uneven road surface, crosswind, etc.) during driving, thereby improving the vehicle's handling and ride comfort.

[0029] The present invention also provides a frame, such as Figure 2-3 As shown, it includes a first longitudinal beam 21, a second longitudinal beam 22 and a rear tail seat of the frame as claimed in any one of claims 1 to 8, the first longitudinal beam 21 and the second longitudinal beam 22 are arranged in parallel and spaced apart, and one end of the first longitudinal beam 21 and one end of the second longitudinal beam 22 are respectively fixedly connected to the rear tail seat of the frame.

[0030] Specifically, the first longitudinal beam 21 includes a first outer plate 211, a first inner plate 212, a first upper cover plate 213 and a first lower cover plate 214. The first outer plate 211 and the first inner plate 212 are relatively parallel, the first upper cover plate 213 and the first lower cover plate 214 are relatively parallel, and the first outer plate 211, the first upper cover plate 213, the first inner plate 212 and the first lower cover plate 214 are connected in sequence. The second longitudinal beam 22 includes a second outer plate 221, a second inner plate 222, a second upper cover plate 223 and a second lower cover plate 224. The second outer plate 221 and the second inner plate 222 are relatively parallel, the second upper cover plate 223 and the second lower cover plate 224 are relatively parallel, and the second outer plate 221, the second upper cover plate 223, the second inner plate 222 and the second lower cover plate 224 are connected in sequence. The first outer plate 211 and the second outer plate 221 are both fixedly connected to the outer plate 132. Specifically, the three edges of the ends of the first outer plate 211 / the second outer plate 221 are respectively welded to the first part 1321, the second part 1322 and the third part 1323. The first inner plate 212 and the second inner plate 222 are both fixedly connected to the inner plate 133. Specifically, the three edges of the ends of the first inner plate 212 / the second inner plate 222 are respectively welded to the first part 1321, the second part 1322 and the third part 1323. The first upper cover plate 213 and the second upper cover plate 223 are respectively welded to the first part 1321, and the first lower cover plate 214 and the second lower cover plate 224 are respectively welded to the third part 1323.

[0031] The present invention also provides a vehicle, comprising the frame as described above.

[0032] It should be noted that the vehicle includes the frame and also includes the frame rear tailstock as described above, and therefore also includes all the advantages of the frame rear tailstock, which will not be repeated here.

[0033] It should also be noted that the vehicles described in this article include but are not limited to mining dump trucks.

[0034] 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.

[0035] 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 expressing the technical solutions and the convenience of description, and therefore should not be understood as limitations of the present invention.

[0036] 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.

[0037] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A rear tailstock of a frame, mounted and fixed at the rear end of the frame, characterized in that: The rear tailstock of the frame comprises a first tailstock (11), a second tailstock (12), a mounting seat (13) and a tie rod (14); the first tailstock (11) and the second tailstock (12) are spaced apart and are both welded to the mounting seat (13); the mounting seat (13) has a cavity (131); the mounting seat (13) is welded to the frame; the tie rod (14) is welded to the mounting seat (13); and two ends of the tie rod (14) are respectively welded to the first tailstock (11) and the second tailstock (12).

2. The rear tailstock of the frame according to claim 1, characterized in that: The mounting seat (13) comprises an outer plate (132) and an inner plate (133), the outer plate (132) and the inner plate (133) are welded together, and the cavity (131) is enclosed between the outer plate (132) and the inner plate (133).

3. The rear tailstock of the frame according to claim 2, characterized in that: The mounting seat (13) further comprises an inner rib (134), wherein the inner rib (134) is located in the cavity (131) and is respectively welded to the outer plate (132) and the inner plate (133).

4. The rear tailstock of the frame according to claim 2, characterized in that: The outer plate (132) is a bent plate, and the outer plate (132) includes a first part (1321), a second part (1322) and a third part (1323) connected in sequence, the first part (1321) and the second part (1322) are connected by a circular arc transition, and the second part (1322) and the third part (1323) are connected by a circular arc transition; the inner plate (133) is a bent plate, and the inner plate (133) includes a first section (1331), a second section (1332) and a third section (1333) connected in sequence, the first section (1331) and the second section (1332) are connected by a circular arc transition, and the second section (1332) and the third section (1333) are connected by a circular arc transition.

5. The rear tailstock of the frame according to claim 4, characterized in that: A side of the first part (1321) away from the second part (1322) is recessed in a direction close to the second part (1322), a side of the third part (1323) away from the second part (1322) is recessed in a direction close to the second part (1322), and opposite sides of the inner plate (133) are respectively fixedly connected to the first part (1321) and the third part (1323) along the recessed parts.

6. The rear tailstock of the frame according to claim 2, characterized in that: The first tailstock (11) comprises a first support plate (111), a first connecting plate (112), a first carriage connecting sleeve (113) and a first axle connecting sleeve (114); the number of the first support plates (111) is two, the two first support plates (111) are arranged opposite to each other, and the two first support plates (111) are connected to the outer plate (132); the two ends of the first connecting plate (112) are respectively connected to the two first support plates (111); one end of the first carriage connecting sleeve (113) passes through one of the first support plates (111), and the other end passes through the other first support plate (111); one end of the first axle connecting sleeve (114) passes through one of the first support plates (111), and the other end passes through the other first support plate (111).

7. The rear tailstock of the frame according to claim 6, characterized in that: The second tailstock (12) comprises a second support plate (121), a second connecting plate (122), a second carriage connecting sleeve (123) and a second axle connecting sleeve (124); the number of the second support plates (121) is two, the two second support plates (121) are arranged opposite to each other, and the two second support plates (121) are connected to the outer plate (132); the two ends of the second connecting plate (122) are respectively connected to the two second connecting plates (122); one end of the second carriage connecting sleeve (123) passes through one of the second support plates (121), and the other end passes through the other of the second support plates (121); one end of the second axle connecting sleeve (124) passes through one of the second support plates (121), and the other end passes through the other of the second support plates (121).

8. The rear tailstock of the frame according to claim 7, characterized in that: The rear tailstock of the frame further comprises a first reinforcing plate (15) and a second reinforcing plate (16); the first reinforcing plate (15) is located between the two first supporting plates (111); the first reinforcing plate (15) is fixedly connected to the two first supporting plates (111) and the outer plate (132); the second reinforcing plate (16) is located between the two second supporting plates (121); the second reinforcing plate (16) is fixedly connected to the two second supporting plates (121) and the outer plate (132).

9. A vehicle frame, characterized in that: The invention comprises a first longitudinal beam (21), a second longitudinal beam (22) and a rear seat of a frame as claimed in any one of claims 1 to 8, wherein the first longitudinal beam (21) and the second longitudinal beam (22) are arranged in parallel and spaced apart, and one end of the first longitudinal beam (21) and one end of the second longitudinal beam (22) are respectively fixedly connected to the rear seat of the frame.

10. A vehicle, characterized in that: Comprising the frame as claimed in claim 9.

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