Anti-fatigue longitudinal beam assembly, frame and mine car

Abstract

The invention discloses an anti-fatigue longitudinal beam assembly, a frame and a mine car, relates to the field of mine trucks, and aims to improve the bearing characteristic of the anti-fatigue longitudinal beam assembly. The anti-fatigue longitudinal beam assembly comprises two anti-fatigue longitudinal beams which are symmetrically arranged relative to the center line of the width direction of the anti-fatigue longitudinal beam assembly in a spaced mode, and each anti-fatigue longitudinal beam comprises a first box body, a second box body and a third box body. The first box bodies are constructed to be unequal in height, and the first box bodies are constructed to be equal in strength; the second box bodies are constructed to be unequal in height, and the second box bodies are constructed to be equal in strength; the third box bodies are constructed to be unequal in height, and the third box bodies are constructed to be equal in strength; wherein the second box body is located between the first box body and the third box body. According to the technical scheme, not only is the weight light, but also the bending rigidity and the strength are very high, and the anti-fatigue capability is very good.

Description

Technical Field

[0001] The invention relates to the technical field of mining trucks, and in particular to an anti-fatigue longitudinal beam assembly, a vehicle frame and a mining truck. Background Art

[0002] Rigid mining trucks are heavy-duty vehicles specially used for mining and transportation of mineral resources. Rigid mining trucks have the advantages of good maneuverability, fast turnover, heavy load and large capacity, and have become the main means of transportation for the development and production of open-pit mines. The frame structure of rigid mining trucks is the load-bearing structure to achieve the above functions, and the longitudinal beam structure is an important part of the frame. The stability and reliability of its structure directly determine the safety of the entire vehicle.

[0003] The inventors have found that there are at least the following problems in the prior art: in recent years, the loading capacity of rigid mining trucks has continued to increase, overloading and overloading occur frequently, and the fatigue strength of the frame longitudinal beam structure is insufficient, which can easily cause cracks in the welds of the longitudinal beam structure, affecting the safety and use of the entire vehicle. Summary of the invention

[0004] The invention provides an anti-fatigue longitudinal beam component, a vehicle frame and a mining vehicle, which are used to improve the anti-fatigue strength of the anti-fatigue longitudinal beam component.

[0005] An embodiment of the present invention provides an anti-fatigue longitudinal beam assembly for a vehicle frame, comprising two anti-fatigue longitudinal beams arranged at intervals, wherein the two anti-fatigue longitudinal beams are symmetrically arranged relative to a center line in a width direction of the anti-fatigue longitudinal beam assembly; each of the anti-fatigue longitudinal beams comprises:

[0006] The first boxes are constructed to have unequal heights, and each of the first boxes is constructed to have equal strength;

[0007] The second boxes are constructed to have unequal heights, and each of the second boxes is constructed to have equal strength; and

[0008] The third boxes are constructed with unequal heights, and each of the third boxes is constructed with equal strength;

[0009] Wherein, the second box is located between the first box and the third box

[0010] In some embodiments, the strengths of the first housing, the second housing, and the third housing are constructed to be the same.

[0011] In some embodiments, the first housing includes:

[0012] A first top plate, one end of the first top plate is configured as a flat plate, and the other end of the first top plate is configured as a bend;

[0013] A second top plate is fixed to the other end of the first top plate, and the second top plate is located on the top of the first top plate;

[0014] A third top plate, one end of the third top plate is configured to be bent, the other end of the third top plate is configured to be a flat plate, the second top plate is fixedly connected to one end of the third top plate, and the second top plate is located on the top of the third top plate;

[0015] Two first side panels, the two first side panels are arranged in parallel; the two first side panels are located at the bottom of the first top panel, the second top panel and the third top panel; the position of the first side panel corresponding to the second top panel is higher than other positions of the first side panels;

[0016] A first bottom plate, located at the bottom of the two first side plates and fixedly connected to the two first side plates; and

[0017] The first reinforcing plate is welded and fixed to one of the first side plates, and is bolted and / or welded and fixed to the other first side plate.

[0018] In some embodiments, the second top plate includes a plurality of first screw holes for connecting with the upper gantry beam.

[0019] In some embodiments, each first side plate is provided with a plurality of second screw holes, and the first reinforcing plate is correspondingly provided with a third screw hole; the first reinforcing plate is bolted to one of the first side plates through the second screw holes and the third screw holes.

[0020] In some embodiments, the first reinforcing plate is configured to be U-shaped, comprising:

[0021] The connecting plate is provided with a plurality of the third screw holes, and is connected to the suspension cylinder seat located outside the first side plate through the third screw holes and the first side plate; the first box bodies of the two anti-fatigue longitudinal beams are located between the two suspension cylinder seats;

[0022] A first reinforcing side plate, fixedly connected to or integral with one side edge of the connecting plate; and

[0023] The second reinforcing side plate is arranged in parallel with the first reinforcing side plate, and the second reinforcing side plate is fixedly connected to or integrated with the other side edge of the connecting plate.

[0024] In some embodiments, a partial area of ​​the third top plate is configured to protrude toward both sides of the third top plate, and the protruding portion is provided with a fourth screw hole for fixedly connecting with the lifting cylinder seat.

[0025] In some embodiments, the second housing includes:

[0026] A fourth top plate is constructed as a bent plate, one end of the fourth top plate is fixedly connected to the third top plate;

[0027] Two second side plates, each of which is configured to be bent, and the bending direction is toward the outside of the width direction of the anti-fatigue longitudinal beam assembly; the distance between one end of the two second boxes facing the first box is a first distance, and the distance between one end of the two second boxes facing the third box is a second distance, and the first distance is smaller than the second distance; and

[0028] The second bottom plate is spaced apart from the fourth top plate; the two second side plates are located between the fourth top plate and the second bottom plate and are fixedly connected.

[0029] In some embodiments, the second bottom plate is configured as a bent plate, and each of the second side plates is configured to have unequal heights.

[0030] In some embodiments, the third box includes:

[0031] A fifth top plate is constructed as a bent plate, one end of the fifth top plate is fixedly connected to the fourth top plate;

[0032] Two third side panels, the two third side panels are arranged in parallel, and the third side panels are configured to have different heights; and

[0033] The third bottom plate is constructed as a flat plate; the two third side plates are located between the fifth top plate and the third bottom plate, and are fixedly connected to the fifth top plate and the third bottom plate.

[0034] In some embodiments, the third box further includes:

[0035] A first reinforced box is located in a cavity between the two third side plates, the fifth top plate and the third bottom plate; the first reinforced box includes a plurality of vertical plates arranged in a circle; the first reinforced box is configured to be connected to the first suspension cylinder; and

[0036] The second reinforced box is located in the cavity between the two third side plates and between the fifth top plate and the third bottom plate; the second reinforced box includes a plurality of vertical plates arranged in a circle; the second reinforced box is configured to be connected to the second suspension cylinder;

[0037] The third bottom plate includes a first avoidance hole for allowing the first suspension cylinder to pass through and a second avoidance hole for allowing the second suspension cylinder to pass through.

[0038] In some embodiments, the length of the first box is longer than the length of the second box; and / or the length of the third box is longer than the length of the second box; the length of the first box is longer than the length of the third box.

[0039] In some embodiments, the distance between the two first boxes is smaller than the distance between the two third boxes.

[0040] In some embodiments, the second box is constructed to be bent, one end of the second box is fixedly connected to the first box, and the other end of the second box is fixedly connected to the third box.

[0041] In some embodiments, the distance between the two first boxes is smaller than the distance between the two third boxes.

[0042] An embodiment of the present invention further provides a vehicle frame, comprising: an anti-fatigue longitudinal beam assembly provided by any technical solution of the present invention.

[0043] An embodiment of the present invention further provides a mining vehicle, comprising:

[0044] The frame provided by any technical solution of the present invention; and

[0045] Two suspension cylinder seats, two first boxes are located between the two suspension cylinder seats, one of the suspension cylinder seats is detachably connected to one of the first boxes, and the other suspension cylinder seat is detachably connected to the other first box.

[0046] In some embodiments, the third box is installed with a first suspension cylinder and a second suspension cylinder; the extension direction of the first suspension cylinder is along the height direction of the anti-fatigue longitudinal beam assembly, and the extension direction of the second suspension cylinder is also along the height direction of the anti-fatigue longitudinal beam assembly.

[0047] In some embodiments, the mine cart further comprises:

[0048] An upper gantry beam is located on the top of the two first boxes and is detachably connected to the two first boxes;

[0049] Among them, the upper gantry beam is located on the top of the two suspension cylinder seats.

[0050] In some embodiments, the mine cart further comprises:

[0051] The lifting cylinder seat spans across the two first boxes and is detachably connected to the third top plates of the two first boxes.

[0052] The anti-fatigue longitudinal beam assembly provided by the above technical solution includes a first box, a second box and a third box. In the width direction, the width of the anti-fatigue longitudinal beam assembly is non-equal; in the height direction, the anti-fatigue longitudinal beam assembly is non-equal. Each box can adopt a variety of structural forms of flat plates and bent plates to form a new structure of the anti-fatigue longitudinal beam assembly of the rigid truck frame for mining. The structure is not only light in weight, but also has high bending stiffness and strength, and has good anti-fatigue ability. It can effectively solve the design contradiction between structural weight and structural stiffness and strength, which is conducive to the lightweight design of the rigid truck frame structure for mining, and is conducive to the fatigue durability of the rigid truck frame structure for mining, and improves the operational safety and reliability of the whole vehicle. The anti-fatigue longitudinal beam assembly provided by the above solution solves the problem of the conflict between the fatigue strength and lightweight of the current mining truck frame structure, and realizes lightweight, lighter and stronger fatigue resistance; if other solutions are used to achieve the same structural stiffness, it is necessary to increase the size and weight of the structure, which is not conducive to the improvement of the performance of the whole vehicle and the realization of lightweight of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0054] Figure 1 A schematic diagram of the use of the anti-fatigue longitudinal beam assembly provided in an embodiment of the present invention.

[0055] Figure 2 A schematic diagram of the three-dimensional structure of an anti-fatigue longitudinal beam assembly provided in an embodiment of the present invention.

[0056] Figure 3 A schematic front view of an anti-fatigue longitudinal beam assembly provided in an embodiment of the present invention.

[0057] Figure 4 A schematic top view of an anti-fatigue longitudinal beam assembly provided in an embodiment of the present invention.

[0058] Figure 5 A left schematic view of an anti-fatigue longitudinal beam assembly provided in an embodiment of the present invention.

[0059] Figure 6 An exploded schematic diagram of an anti-fatigue longitudinal beam assembly provided in an embodiment of the present invention.

[0060] Reference numerals:

[0061] 10. Anti-fatigue longitudinal beam assembly; 20. Suspension cylinder seat; 30. Anti-collision beam; 40. Intermediate reinforcement assembly; 50. Upper gantry beam; 60. Lifting cylinder seat;

[0062] 1. First box assembly; 2. Second box assembly; 3. Third box assembly;

[0063] 11, first box body; 111, first top plate; 112, second top plate; 113, third top plate; 114, first side plate; 115, first bottom plate; 116, first reinforcing plate; 112a, first screw hole; 113a, fourth screw hole; 114a, second screw hole;

[0064] 1161, connecting plate; 1162, first reinforcing side plate; 1163, second reinforcing side plate; 1161a, third screw hole;

[0065] 21, second box body; 211, fourth top plate; 212, second side plate; 213, second bottom plate;

[0066] 31. The third box body; 311. The fifth top plate; 312. The third side plate; 313. The third bottom plate; 314. The first reinforced box body; 315. The second reinforced box body; 314a-314d. Vertical plates; 315a-315d. Vertical plates; 313a. The first avoidance hole; 313b. The second avoidance hole. DETAILED DESCRIPTION

[0067] Combine the following Figure 1 to Figure 6 The technical solution provided by the present invention is described in more detail. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as being merely exemplary and not limiting.

[0068] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

[0069] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0070] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0071] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment are considered part of the specification.

[0072] The dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In the drawings, the same reference numerals are attached to common structural elements or structural elements of the same type, and their repeated descriptions are appropriately omitted.

[0073] In the description of the specific embodiments below, for the convenience of explanation, Figure 1 , Figure 3 to Figure 5 In the figure, the X-axis direction is the length direction of the entire anti-fatigue longitudinal beam assembly 10, the Y-axis direction is the width direction of the entire anti-fatigue longitudinal beam assembly 10, and the Z-axis direction is the height direction of the entire anti-fatigue longitudinal beam assembly 10, which is equivalent to the front-rear direction.

[0074] See also Figure 1 and Figure 2 The embodiment of the present invention provides an anti-fatigue longitudinal beam assembly 10 for a vehicle frame, comprising two anti-fatigue longitudinal beams 1 arranged at intervals, and the two anti-fatigue longitudinal beams 1 are symmetrically arranged relative to the center line of the width direction of the anti-fatigue longitudinal beam assembly; each of the anti-fatigue longitudinal beams 1 comprises a first box 11, a second box 21 and a third box 31. The first box 11 is constructed to be non-equal in height, and each of the first boxes 11 is constructed to be of equal strength. The second boxes 21 are constructed to be non-equal in height, and each of the second boxes 21 is constructed to be of equal strength. The third boxes 31 are constructed to be non-equal in height, and each of the third boxes 31 is constructed to be of equal strength. Among them, one second box 21 is located between one first box 11 and one third box 31, and another second box 21 is located between another first box 11 and another third box 31.

[0075] The anti-fatigue longitudinal beam assembly 10 of the vehicle frame is symmetrical along the center line L in the width direction of the anti-fatigue longitudinal beam assembly 10, see Figure 4 The structures of the two first boxes 11 are the same, and the structures of the two third boxes 31 are also the same. The structures of the two second boxes 21 are symmetrical with respect to the center line L in the width direction of the fatigue-resistant longitudinal beam assembly 10. Figure 2 and Figure 4, each second box 21 is bent, and the distance between the two second boxes 21 is variable, which can be set to be gradual or step-wise. In some embodiments, the distance between the two second boxes 21 is distributed according to the following rules: at both ends of the second box 21, the distance between the two second boxes 21 is fixed, and the distance between the middle parts of the two second boxes 21 is gradual. Figure 4 In the top view direction shown, the two second boxes 21 form a trumpet-shaped structure as a whole. Since the two second boxes 21 adopt the above structure, the width of the entire anti-fatigue longitudinal beam assembly 10 is also variable, and the first width W1 of the anti-fatigue longitudinal beam assembly 10 at one end where the two first boxes 11 are located is smaller than the second width W2 of the anti-fatigue longitudinal beam assembly 10 at the other end where the two third boxes 31 are located.

[0076] The entire anti-fatigue longitudinal beam assembly 10 adopts this variable width structure. On the one hand, the structure of the anti-fatigue longitudinal beam assembly 10 can be designed to be as small as possible to reduce redundant structures. On the other hand, the anti-rollover performance of the anti-fatigue longitudinal beam assembly 10 can also be improved.

[0077] See also Figures 1 to 3 In the Z direction, i.e., the height direction, the height of each box of the fatigue-resistant longitudinal beam assembly 10 is variable. Among them, the height of the first box 11 is that the bottom end of the first box 11 is flat, and the bottom middle and the other end of the first box 11 are gradual and tapered. From the top of the first box 11, the first top plate 111 of the first box 11 is gradual, and the second top plate 112 and the third top plate 113 of the first box 11 are both flat plates, see Figure 6 shown.

[0078] See also Figures 1 to 4 In the Z direction, the fourth top plate 211 of the second box body 21 is flat in the X direction and bent in the Y direction, similar to a corrugated plate, that is, in the main view direction, the projection of the fourth top plate 211 is a straight line. The second bottom plate 213 of the second box body 21 is bent in the Z direction, similar to a corrugated plate, that is, in the main view direction, the projection of the second bottom plate 213 is a broken line or a curve.

[0079] See also Figures 1 to 4 In the Z direction, the fifth top plate 311 of the third box body 31 is mostly flat, and one end thereof is bent downward to close the end of the third box body 31 away from the second box body 21. The third bottom plate 313 of the third box body 31 is flat.

[0080] It can be seen from the above that in the Z direction, the first box 11, the second box 21 and the third box 31 are all non-equal in height. The first box 11, the second box 21 and the third box 31 adopt this structure, which is conducive to forming an equal strength structure. In some embodiments, the strength of the first box 11, the second box 21 and the third box 31 are constructed to be the same. This structure makes the redundant structure of the anti-fatigue longitudinal beam assembly 10 very small, the load-bearing capacity is very strong, and effectively takes into account the two contradictory requirements of lightweight and high strength.

[0081] The specific structure of each box is introduced in detail below.

[0082] See also Figure 1 , Figures 2 to 6 The structures of the first boxes 11 are the same. The following takes one of the first boxes 11 as an example for detailed description. The first box 11 includes a first top plate 111, a second top plate 112, a third top plate 113, two first side plates 114, a first bottom plate 115 and a first reinforcing plate 116.

[0083] One end of the first top plate 111 is configured as a flat plate, and the other end of the first top plate 111 is configured as a bend. The first top plate 111 is a special-shaped plate. The structure of the first top plate 111 matches the contour shape of the corresponding part of the first side plate 114, and finally forms a height gradient structure at the end of the first box body 11. Figure 3 The shape of the first top plate 111 can be clearly seen in the front view.

[0084] See also Figure 3 and Figure 6 The second top plate 112 is fixed to the other end of the first top plate 111, and the second top plate 112 is located on the top of the first top plate 111. The second top plate 112 and the first top plate 111 can be fixed by welding. The second top plate 112 is used as a connecting component to install and fix the upper gantry beam 50. The second top plate 112 is provided with a plurality of first screw holes 112a, such as Figure 6 As shown, the second top plate 112 is provided with two groups of first screw holes 112a, each group of three first screw holes 112a. The upper gantry beam 50 and the second top plate 112 are connected by screw holes and bolts, so that the upper gantry beam 50 and the second top plate 112 no longer need to be welded and fixed, and the weld between the upper gantry beam 50 and the second top plate 112 can be omitted, and there will be no quality and safety hazards due to cracking of the weld between the upper gantry beam 50 and the second top plate 112, thereby ensuring the normal operation of the mine car.

[0085] See also Figure 3The second top plate 112 covers the top of the first top plate 111 and the third top plate 113, and the position of the second top plate 112 is higher than the first top plate 111 and the third top plate 113. The welds between the first top plate 111, the third top plate 113 and the second top plate 112 are all located on the bottom surface of the second top plate 112. And the edge of the second top plate 112 protrudes from the first top plate 111 and the third top plate 113, so that the first top plate 111 and the second top plate 112 form an edge-to-face connection, and this weld is relatively stable and not easy to crack and damage; the second top plate 112 and the third top plate 113 also form an edge-to-face connection, and this weld is relatively stable and not easy to crack and damage

[0086] Continue to see Figure 3 and Figure 6 One end of the third top plate 113 is bent, and the other end of the third top plate 113 is flat. The second top plate 112 is fixedly connected to one end of the third top plate 113, and the second top plate 112 is located on the top of the third top plate 113. One end of the third top plate 113 is bent upward, which is to form an equal strength box-type structure and also makes it easier to connect and weld the third top plate 113 and the second top plate 112.

[0087] Continue to see Figure 6 In some embodiments, a portion of the third top plate 113 is configured to protrude toward both sides of the third top plate 113, and the protruding portion a is provided with a fourth screw hole 113a for fixedly connecting with the lifting cylinder seat 60. The second screw hole 114a and the third screw hole 1161a will be described later, and the fourth screw hole 113a will be described here first. Figure 2 , the location of the fourth screw hole is the widest location of the third top plate 113. The fourth screw hole 113a runs through the thickness direction of the third top plate 113, the center axis direction of the fourth screw hole 113a is along the height direction of the anti-fatigue longitudinal beam assembly 10, and the center axis of the fourth screw hole 113a is located outside the two first side plates 114. Each edge protrusion of the third top plate 113 is provided with a plurality of fourth screw holes 113a, for example, four, five or six. The fourth screw holes located at each edge protrusion of the third top plate 113 are arranged in a row. By setting a partial area of ​​the third top plate 113 to be convex, the lifting cylinder can be directly and detachably connected without adding an eccentric seat, thereby avoiding the structural cracking problem caused by the setting of the eccentric seat.

[0088] Continue to see Figures 1 to 6 , the two first side plates 114 are arranged in parallel; the two first side plates 114 are located at the bottom of the first top plate 111, the second top plate 112 and the third top plate 113; the position of the first side plate 114 corresponding to the second top plate 112 is higher than other positions of the first side plate 114. The two first side plates 114 are flat plates, see Figure 4The top edges of the two first side panels 114 are shaped to match the structures of the first top panel 111, the second top panel 112, and the third top panel 113, and finally form a first box body 11 of equal strength.

[0089] See also Figure 1 , Figure 2 and Figure 6 , the first bottom plate 115 is located at the bottom of the two first side plates 114, and the first bottom plate 115 is fixedly connected to the two first side plates 114, specifically by welding. The end section of the first bottom plate 115 away from the third box body 31 is flat; the other section of the first bottom plate 115 toward the third box body 31 is inclined, and is tilted toward the top of the third box body 31, and the tilted section is a flat plate or an arc-shaped plate. In some embodiments, there is an angle between the two sections of the first top plate 111, the angle is less than 180°, and the connection between the two sections is smoothly transitioned. The first bottom plate 115 adopts this structural form and cooperates with the structure of other parts of the first box body 11, so that the first box body 11 forms a variable height and equal strength structure, which greatly increases the bearing capacity of the first box body 11.

[0090] See also Figure 1 , Figure 2 and Figure 6 , the first reinforcing plate 116 is welded and fixed to one of the first side plates 114, and the first reinforcing plate 116 is bolted and / or welded to the other first side plate 114. Specifically, the first reinforcing plate 116 and the other first side plate 114 can be bolted and welded at the same time, or can be fixed only by welding. The first reinforcing plate 116 is used to increase the structural strength of the first box body 11, so that the suspension cylinder seat 20 can be bolted to the first box body 11 without welding, avoiding the cracking of the weld at the root of the suspension cylinder seat 20 caused by welding, and there is no risk of weld cracking, which can increase the load-bearing capacity of the fatigue-resistant longitudinal beam assembly 10 and reduce the possibility of quality accidents.

[0091] Continue to see Figure 6In some embodiments, the first reinforcing plate 116 is constructed in a U shape, and the first reinforcing plate 116 includes a connecting plate 1161, a first reinforcing side plate 1162, and a second reinforcing side plate 1163. The connecting plate 1161 is provided with a plurality of third screw holes 1161a. Through the third screw holes 1161a, the first side plate 114 is connected to the suspension cylinder seat 20 located outside the first side plate 114; the first reinforcing plate 116 is pre-set with a fastening nut to facilitate the connection. The first boxes 11 of the two anti-fatigue longitudinal beams 1 are located between the two suspension cylinder seats 20. The two first boxes 11 are located between the two suspension cylinder seats 20. The first reinforcing side plate 1162 is fixedly connected to or integrated with one side of the connecting plate 1161. The second reinforcing side plate 1163 is arranged in parallel with the first reinforcing side plate 1162, and the second reinforcing side plate 1163 is fixedly connected to or integrated with the other side of the connecting plate 1161. The first reinforcing side plate 1162 is located on the side of the second reinforcing side plate 1163 away from the third box body 31, and the second reinforcing side plate 1163 is located on the side of the first reinforcing side plate 1162 facing the third box body 31. The heights of the first reinforcing side plate 1162, the connecting plate 1161, and the second reinforcing side plate 1163 are the same as the maximum height of the first side plate 114.

[0092] Continue to see Figure 1 , Figure 2 and Figure 6 In some embodiments, one of the first side plates 114 is provided with a plurality of second screw holes 114a, specifically, the first side plate 114 facing the outside of the anti-fatigue longitudinal beam assembly is provided with a plurality of second screw holes 114a, and the first reinforcing plate 116 is correspondingly provided with a third screw hole 1161a. The first reinforcing plate 116 is bolted to one of the first side plates 114 through the second screw hole 114a and the third screw hole 1161a. The suspension cylinder seat 20 can be detachably connected to the first box body 11 through the second screw hole 114a and the third screw hole 1161a. The suspension cylinder seat 20 is no longer detachably connected to the first box body 11 by welding, which can reduce the risk of quality accidents caused by the welds formed by welding.

[0093] Continue to see Figures 1 to 6 The second box body 21 is the main box body for realizing the width change of the anti-fatigue longitudinal beam assembly 10. According to different models of mining cars, different variable width structures of the second box body 21 are set. The second box body 21 in this application is a special-shaped box body. The two second boxes 21 are symmetrical with respect to the longitudinal center line L of the anti-fatigue longitudinal beam assembly 10. The two second boxes 21 are arranged roughly in a bell-shaped shape. The small end of the bell-shaped is fixedly connected to the first box body 11, and the large end of the bell-shaped is fixedly connected to the second box body 21.

[0094] See also Figure 4In some embodiments, the second box 21 is configured to be bent, one end of the second box 21 is fixedly connected to the first box 11, and the other end of the second box 21 is fixedly connected to the third box 31. The first box 11, the second box 21, and the third box 31 form a closed box as a whole. In order to avoid the first suspension cylinder and the second suspension cylinder that need to be installed in the third box 31, an avoidance hole is provided at the bottom of the third box 31, which will be described in detail later.

[0095] See also Figure 4 In some embodiments, the distance W1 between the two first boxes 11 is smaller than the distance W2 between the two third boxes 31. The entire anti-fatigue longitudinal beam assembly forms a beam structure with variable width.

[0096] In some embodiments, the structure of each second box body 21 is symmetrical with respect to the center line of the width direction of the anti-fatigue longitudinal beam assembly 10. Each second box body 21 includes a fourth top plate 211, two second side plates 212 and a second bottom plate 213. The fourth top plate 211 is constructed as a bent plate, and one end of the fourth top plate 211 is fixedly connected to the third top plate 113. Each second side plate 212 is constructed to be bent, and the bending direction is toward the outside of the width direction of the anti-fatigue longitudinal beam assembly 10; the distance between the ends of the two second boxes 21 facing the first box body 11 is the first distance, and the distance between the ends of the two second boxes 21 facing the third box body 31 is the second distance, and the first distance is less than the second distance. The second bottom plate 213 is arranged at intervals from the fourth top plate 211. The two second side plates 212 are located between the fourth top plate 211 and the second bottom plate 213. Each second side plate 212, the fourth top plate 211 and the second bottom plate 213 are fixedly connected.

[0097] See also Figure 6 In some embodiments, in the Z direction, the second bottom plate 213 is constructed as a bent plate, and each second side plate 212 is constructed to have different heights. Here, the non-equal heights do not mean that the thickness of the second bottom plate 213 itself is variable, but that the second bottom plate 213 itself is bent, and the heights of some areas of the second bottom plate 213 in the Z direction are different.

[0098] In some embodiments, the two third boxes 31 have the same structure, and each third box 31 includes a fifth top plate 311, two third side plates 312 and a third bottom plate 313. The fifth top plate 311 is constructed as a bent plate, and one end of the fifth top plate 311 is fixedly connected to the fourth top plate 211. The two third side plates 312 are arranged in parallel, and each third side plate 312 is constructed to be non-equal in height. The third side plate 312 is constructed to be non-equal in height, which means that the height of a part or all of the areas of the third side plate 312, that is, the size in the Z direction is not the same. In the embodiment of the present invention, it means that the height of the section of the third side plate 312 away from the first box 11 is gradual. The third bottom plate 313 is constructed as a flat plate. The two third side plates 312 are located between the fifth top plate 311 and the third bottom plate 313. And each third side plate 312 is fixedly connected to the fifth top plate 311 and the third bottom plate 313.

[0099] The fifth top plate 311 , the two third side plates 312 and the third bottom plate 313 form a box body with one end closed, that is, one end of the third box body 31 is closed, and the other end of the third box body 31 is fixedly connected to the second box body 21 , specifically by welding.

[0100] Continue to see Figure 6 In some embodiments, each third box 31 further includes a first reinforced box 314 and a second reinforced box 315. The first reinforced box 314 and the second reinforced box 315 are both located in the cavity between the two third side plates 312, the fifth top plate 311 and the third bottom plate 313.

[0101] The first reinforced box 314 includes a plurality of vertical plates arranged in a circle, namely, vertical plates 314a, 314b, 314c, and 314d. The first reinforced box 314 is configured to be connected to the first suspension cylinder. The second reinforced box 315 is located in a cavity between the two third side plates 312, the fifth top plate 311, and the third bottom plate 313. The second reinforced box 315 includes a plurality of vertical plates arranged in a circle, namely, vertical plates 315a, 315b, 315c, and 315d. The second reinforced box 315 is configured to be connected to the second suspension cylinder. Among them, the third bottom plate 313 includes a first avoidance hole 313a for allowing the first suspension cylinder to pass through and a second avoidance hole 313b for allowing the second suspension cylinder to pass through.

[0102] The first suspension cylinder and the second suspension cylinder are not installed on the outside of the third box 31 in the Y direction, but are installed on the first reinforced box 314 and the second reinforced box 315, that is, the head of the first suspension cylinder is located inside the third box 31, and the head of the second suspension cylinder is located inside the third box 31. The first suspension cylinder and the second suspension cylinder are both located on the center line of the third box 31 in the Y direction. In actual use, the load-bearing of the first suspension cylinder and the second suspension cylinder is symmetrical, and there will be no eccentricity problem. If the first suspension cylinder and the second suspension cylinder are installed on the outside of the third box 31 in the Y direction, although this structure is symmetrical, in actual use, the load-bearing of the first suspension cylinder and the second suspension cylinder is not completely balanced, so the frame will have serious eccentric load-bearing phenomenon. The technical solution of the embodiment of the present invention does not have eccentricity.

[0103] The distance between the first suspension cylinder and the second suspension cylinder is relatively wide, and the anti-overturning moment is good. However, the force applied by the first suspension cylinder and the second suspension cylinder to the third box 31 is along the Y direction, which is easy to damage the anti-fatigue longitudinal beam assembly 10. The technical solution of the embodiment of the present invention is to install the heads of the first suspension cylinder and the second suspension cylinder inside the third box 31, and the telescopic directions of the first suspension cylinder and the second suspension cylinder are along the Z direction. The force applied to the third box 31 is along the Z direction, which is more easily balanced by other structures of the mine car, and the load-bearing capacity of the first suspension cylinder and the second suspension cylinder is enhanced. In addition, since the anti-fatigue longitudinal beam assembly 10 is a box-type structure with variable width, the distance between the two third boxes 31 is greater than the distance between the two first boxes 11, so the distance between the first suspension cylinder and the second suspension cylinder installed in each third box 31 is large, which can greatly improve the anti-overturning performance of the anti-fatigue longitudinal beam assembly 10.

[0104] Back to Figure 1 The first box assembly 1 is provided with an anti-collision beam 30 at one end away from the second box assembly 2. An intermediate reinforcement assembly 40 is provided at the top upper area of ​​the first box assembly 1, the second box assembly 2, and the third box assembly 3 to increase the overall rigidity and strength of the anti-fatigue longitudinal beam assembly 10.

[0105] See also Figure 1 , Figure 2 , Figure 4 or Figure 6 In some embodiments, the length of the first box 11 is longer than the length of the second box 21. And / or, the length of the third box 31 is longer than the length of the second box 21. The length of the first box 11 is longer than the length of the third box 31. According to the load-bearing characteristics of each part of the first box 11, the second box 21, and the third box 31, the length of each box is determined. This length distribution relationship can better form an equal strength structure.

[0106] See also Figure 1 The embodiment of the present invention further provides a vehicle frame, comprising: an anti-fatigue longitudinal beam assembly 10 provided by any technical solution of the present invention.

[0107] The frame of the above technical solution has an anti-fatigue longitudinal beam component 10 that adopts a variety of structural forms such as flat plates and bent plates, forming a new structure of the anti-fatigue longitudinal beam component 10 of the rigid truck frame for mining. The structure is not only light in weight, but also has high bending stiffness and strength, and has good anti-fatigue ability. It can effectively solve the design contradiction between structural weight and structural stiffness and strength, which is beneficial to the lightweight design of the rigid truck frame structure for mining, and is beneficial to the fatigue durability of the rigid truck frame structure for mining, thereby improving the operating safety and reliability of the entire vehicle.

[0108] Continue to see Figure 1 The embodiment of the present invention further provides a mining car, comprising two suspension cylinder seats 20 and a frame provided by any technical solution of the present invention. Two first boxes 11 are located between the two suspension cylinder seats 20, and one of the suspension cylinder seats 20 is detachably connected to one of the first boxes 11, and the other suspension cylinder seat 20 is detachably connected to the other first box 11. One of the suspension cylinder seats 20 is connected to one of the first side plates 114 through the second screw hole 114a of the first side plate 114, and the other suspension cylinder seat 20 is connected to the other first side plate 114 through the second screw hole 114a of the first side plate 114.

[0109] In some embodiments, the third box 31 is installed with a first suspension cylinder and a second suspension cylinder. The extension direction of the first suspension cylinder is along the height direction of the anti-fatigue longitudinal beam assembly 10, and the extension direction of the second suspension cylinder is also along the height direction of the anti-fatigue longitudinal beam assembly 10. The load-bearing direction of the third box 31 is changed from the existing parallel to the width direction to along the height direction, and the load-bearing performance is improved.

[0110] In some embodiments, the mining car further includes an upper gantry beam 50. The upper gantry beam 50 is located on the top of the two first boxes 11 and is detachably connected to the two first boxes 11. The upper gantry beam 50 is located on the top of the two suspension cylinder seats 20.

[0111] The upper gantry beam 50 adopts a detachable connection mode, and there is no accident of weld cracking. The upper gantry beam 50 of different models can also be repaired and replaced as needed.

[0112] In some embodiments, the mining car further includes a lifting cylinder seat 60 , which spans across the two first boxes 11 and is detachably connected to the third top plates 113 of the two first boxes 11 .

[0113] The length of the lifting cylinder seat 60 is relatively long, directly spanning the two first boxes 11. The lifting cylinder seat 60 adopts a detachable connection mode, and there is no risk of weld failure, thereby improving the reliability of the mine car.

[0114] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the protection content of the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0115] In the description of the present invention, each technical feature may be combined with other technical features where feasible.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-fatigue longitudinal beam assembly for a vehicle frame, characterized in that: include: Two anti-fatigue longitudinal beams (1) are arranged at intervals, and the two anti-fatigue longitudinal beams (1) are arranged symmetrically with respect to a center line in a width direction of the anti-fatigue longitudinal beam assembly; each of the anti-fatigue longitudinal beams (1) comprises: The first boxes (11) are constructed to have unequal heights, and each of the first boxes (11) is constructed to have equal strength; The second boxes (21) are constructed to have unequal heights, and each of the second boxes (21) is constructed to have equal strength; and The third boxes (31) are constructed to have unequal heights, and each of the third boxes (31) is constructed to have equal strength; Wherein, the second box (21) is located between the first box (11) and the third box (31).

2. The fatigue-resistant longitudinal beam assembly according to claim 1, characterized in that: The first box body (11), the second box body (21) and the third box body (31) are constructed to have the same strength.

3. The fatigue-resistant longitudinal beam assembly according to claim 1, characterized in that: The first housing (11) comprises: A first top plate (111), wherein one end of the first top plate (111) is configured as a flat plate, and the other end of the first top plate (111) is configured as a bend; A second top plate (112) is fixed to the other end of the first top plate (111), and the second top plate (112) is located on the top of the first top plate (111); a third top plate (113), one end of the third top plate (113) being configured to be bent, the other end of the third top plate (113) being configured to be a flat plate, the second top plate (112) being fixedly connected to one end of the third top plate (113), and the second top plate (112) being located on the top of the third top plate (113); Two first side panels (114), the two first side panels (114) are arranged in parallel; the two first side panels (114) are located at the bottom of the first top panel (111), the second top panel (112) and the third top panel (113); the position of the first side panel (114) corresponding to the second top panel (112) is higher than other positions of the first side panel (114); A first bottom plate (115), located at the bottom of the two first side plates (114), and fixedly connected to the two first side plates (114); and The first reinforcing plate (116) is welded and fixed to one of the first side plates (114), and is bolted and / or welded to the other first side plate (114).

4. The anti-fatigue longitudinal beam assembly according to claim 3, characterized in that: The second top plate (112) comprises a plurality of first screw holes (112a) for connecting with the upper gantry beam (50).

5. The fatigue-resistant longitudinal beam assembly according to claim 3, characterized in that: The first side plate (114) is provided with a plurality of second screw holes (114a), and the first reinforcing plate (116) is correspondingly provided with a third screw hole (1161a); the first reinforcing plate (116) is bolted to the first side plate (114) through the second screw holes (114a) and the third screw holes (1161a).

6. The fatigue-resistant longitudinal beam assembly according to claim 3, characterized in that: The first reinforcing plate (116) is constructed in a U shape and comprises: The connecting plate (1161) is provided with a plurality of the third screw holes (1161a), and is connected to a suspension cylinder seat (20) located outside the first side plate (114) through the third screw holes (1161a) and the first side plate (114); the first boxes (11) of the two anti-fatigue longitudinal beams (1) are located between the two suspension cylinder seats (20); A first reinforcing side plate (1162) is fixedly connected to or integral with one side edge of the connecting plate (1161); and The second reinforcing side plate (1163) is arranged in parallel with the first reinforcing side plate (1162), and the second reinforcing side plate (1163) is fixedly connected to or integrated with the other side edge of the connecting plate (1161).

7. The fatigue-resistant longitudinal beam assembly according to claim 3, characterized in that: A partial area of ​​the third top plate (113) is constructed to protrude outwards toward both sides of the third top plate (113), and the protruding portion is provided with a fourth screw hole for fixedly connecting with the lifting cylinder seat (60).

8. The fatigue-resistant longitudinal beam assembly according to claim 1, characterized in that: The second housing (21) each comprises: A fourth top plate (211) is constructed as a bent plate, and one end of the fourth top plate (211) is fixedly connected to the third top plate (113); two second side plates (212), each of the second side plates (212) being configured to be bent, and the bending direction is toward the outside in the width direction of the anti-fatigue longitudinal beam assembly (10); a distance between one end of the two second boxes (21) facing the first box (11) is a first distance, and a distance between one end of the two second boxes (21) facing the third box (31) is a second distance, and the first distance is smaller than the second distance; and The second bottom plate (213) is arranged at a distance from the fourth top plate (211); the two second side plates (212) are located between the fourth top plate (211) and the second bottom plate (213), and are fixedly connected.

9. The fatigue-resistant longitudinal beam assembly according to claim 8, characterized in that: The second bottom plate (213) is constructed as a bent plate, and each of the second side plates (212) is constructed to have unequal heights.

10. The fatigue-resistant stringer assembly according to claim 1, characterized in that: The third housing (31) comprises: A fifth top plate (311) is constructed as a bent plate, one end of the fifth top plate (311) being fixedly connected to the fourth top plate (211); Two third side plates (312), the two third side plates (312) are arranged in parallel, and each of the third side plates (312) is constructed to have a different height; and The third bottom plate (313) is constructed as a flat plate; the two third side plates (312) are located between the fifth top plate (311) and the third bottom plate (313), and are fixedly connected to the fifth top plate (311) and the third bottom plate (313).

11. The fatigue-resistant stringer assembly according to claim 10, characterized in that: Each of the third boxes (31) further comprises: A first reinforced box (314) is located in a cavity between the two third side plates (312), the fifth top plate (311) and the third bottom plate (313); the first reinforced box (314) comprises a plurality of vertical plates arranged in a circle; the first reinforced box (314) is configured to be connected to a first suspension cylinder; and The second reinforced box (315) is located in a cavity between the two third side plates (312) and between the fifth top plate (311) and the third bottom plate (313); the second reinforced box (315) comprises a plurality of vertical plates arranged in a circle; the second reinforced box (315) is configured to be connected to a second suspension cylinder; Wherein, the third bottom plate (313) comprises a first avoidance hole for allowing the first suspension cylinder to pass through and a second avoidance hole for allowing the second suspension cylinder to pass through.

12. The fatigue-resistant stringer assembly according to claim 1, characterized in that: The length of the first box (11) is longer than the length of the second box (21); and / or the length of the third box (31) is longer than the length of the second box (21); the length of the first box (11) is longer than the length of the third box (31).

13. The fatigue-resistant stringer assembly according to claim 1, characterized in that: The distance between the two first boxes (11) is smaller than the distance between the two third boxes (31).

14. The fatigue-resistant stringer assembly according to claim 8, characterized in that: The second box body (21) is constructed to be bent, one end of the second box body (21) is fixedly connected to the first box body (11), and the other end of the second box body (21) is fixedly connected to the third box body (31).

15. The fatigue-resistant stringer assembly according to claim 1, characterized in that: The distance between the two first boxes (11) is smaller than the distance between the two third boxes (31).

16. A vehicle frame, characterized in that: include: The fatigue-resistant longitudinal beam assembly (10) as claimed in any one of claims 1 to 15.

17. A mining car, characterized in that: include: The frame of claim 16; as well as Two suspension cylinder seats (20), two first boxes (11) are located between the two suspension cylinder seats (20), and one of the suspension cylinder seats (20) is detachably connected to one of the first boxes (11), and the other suspension cylinder seat (20) is detachably connected to the other first box (11).

18. The mining vehicle according to claim 17, characterized in that The third box (31) is installed with a first suspension cylinder and a second suspension cylinder; the extension and retraction direction of the first suspension cylinder is along the height direction of the anti-fatigue longitudinal beam assembly (10), and the extension and retraction direction of the second suspension cylinder is also along the height direction of the anti-fatigue longitudinal beam assembly (10).

19. The mining vehicle according to claim 17, characterized in that: Also includes: An upper gantry beam (50) is located on the top of the two first boxes (11) and is detachably connected to the two first boxes (11); Wherein, the upper gantry beam (50) is located on the top of the two suspension cylinder seats (20).

20. The mining vehicle according to claim 17, characterized in that Also includes: A lifting cylinder seat (60), wherein the lifting cylinder seat (60) spans the two first boxes (11) and is detachably connected to the third top plates (113) of the two first boxes (11).

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