Walking driving system device, mounting method and engineering machinery

Abstract

The invention discloses a walking driving system device, an installation method and engineering machinery. The walking driving system device comprises a double-bearing driving device, a driving wheel of an annular structure, a walking speed reducer and a connecting cover plate of an annular structure. The driving device is arranged at the end part of the longitudinal beam and is provided with a pair of main vertical plates which are oppositely arranged and are provided with mounting holes; the driving wheel is assembled between the two main vertical plates of the driving device, and the driving wheel can circumferentially rotate between the two main vertical plates; a walking speed reducer is arranged in the two main vertical plates and the driving wheel in a penetrating mode, the front end area of the walking speed reducer is fixedly connected with the main vertical plate I, and the middle area of the walking speed reducer is fixedly connected with the driving wheel. And the connecting cover plate is fixed together with the rear end part area of the walking speed reducer and the main vertical plate II. The walking driving system device is simple and reliable in overall connection, uniform in structural stress, easy to mount and dismount, low in cost and extremely high in popularization value, and the defects in the prior art are well overcome.

Description

Technical Field

[0001] The invention relates to a walking drive system device and an installation method, belonging to the technical field of engineering machinery. Background Art

[0002] The installation structure of the drive device of the traditional chassis travel drive system adopts a single-sided fixing form. The travel reducer is fixedly connected to the single-sided drive seat by circumferential bolts, and the drive wheel is fixedly connected to the output end of the travel reducer by circumferential bolts. The motor drives the travel reducer, and the travel reducer drives the drive wheel to rotate. The entire drive seat structure is a single-sided installation structure. Relative to the entire longitudinal beam structure, after the travel reducer and the drive wheel are installed, the entire drive device is cantilevered. In this way, in actual work, the drive seat in the form of a single-sided flange ring is subject to greater bending and torsional stresses, and the risk of failure of the circumferential bolt connection is greater. In addition, the drive seat is subject to a large load, and high requirements are placed on the structural strength and welding strength.

[0003] In order to solve the above problems and solve the drawbacks of unidirectional load-bearing, the technicians further studied and designed a walking drive installation structure and chassis drive system-level engineering vehicle (ZL202210081752.X), which also disclosed a connection structure of two flange rings. This drive seat structure can effectively realize bidirectional load-bearing. This structure can solve the problem of eccentric load on one side of the flange ring to a certain extent. However, this drive seat connection structure is a drive system that uses a spline shaft to connect with the drive wheel and the reducer. The spline shaft, bearing, floating seal, spacer, drive wheel and reducer constitute a complete drive system. On the one hand, the entire installation dimension chain has a very high precision and belongs to a precision transmission part. The spline shaft connection precision is particularly high. The concentricity of the two flange rings and the control precision of the dimension chain are very strict. Generally, the processing volume is a few threads, and the manufacturing requirements are particularly high. On the other hand, for large mining excavators, this drive system is applied. The internal bearing parts and seals are very expensive, and the cost of the whole system is relatively high. Finally, this type of installation structure is extremely inconvenient to maintain and the maintenance cost is high. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a walking drive system device and an installation method, which adopts a driving device with a double load-bearing structure and a flange ring circumferential bolt connection method to achieve a fixed connection between the reducer and the driving wheel and the driving device. The connection is simple and reliable, and the structure is evenly stressed, which solves the drawbacks of the prior art. It is simple to install and disassemble, low in cost, and has a very high promotion value.

[0005] The present invention is implemented according to the following technical solutions: In a first aspect, the present invention provides a walking drive system device, comprising: A double-loaded driving device is arranged at the end of the longitudinal beam and has a pair of main vertical plates facing each other and provided with mounting holes; A driving wheel in an annular structure is mounted between the two main vertical plates of the driving device, and the driving wheel can rotate circumferentially between the two main vertical plates; A travel reducer is inserted between the two main vertical plates and the driving wheel, and the front end area of ​​the travel reducer is fixedly connected to the main vertical plate I, and the middle area of ​​the travel reducer is fixedly connected to the driving wheel; The connecting cover plate of an annular structure is fixed together with the rear end area of ​​the travel reducer and the main vertical plate II.

[0006] In some embodiments, the travel reducer has an overall stepped cylindrical structure, with three steps transitioning the reducer from the large end to the small end, forming a total of three groups of connection positions; the three groups of connection positions respectively realize the combined connection of the travel reducer with the drive device and the drive wheel.

[0007] In some embodiments, the large end mounting surface of the travel reducer is matched and connected with the mounting surface of the main vertical plate I of the driving device; the middle section step surface of the travel reducer is matched and connected with the internal connection step surface of the driving wheel; the small end of the travel reducer is located in the center hole of the main vertical plate II of the driving device, and the small end mounting surface of the travel reducer is coplanar with the outer mounting surface of the main vertical plate II; the connecting cover plate is matched and connected with the small end mounting surface of the travel reducer and the outer mounting surface of the main vertical plate II.

[0008] In some embodiments, a circumferential threaded hole is provided on the mounting surface of the main vertical plate I, a circumferential through hole is provided on the mounting surface of the large end of the travel reducer, and one threaded hole corresponds to one through hole, and the two are fixedly connected by a circumferential mounting bolt from the travel reducer to the end of the main vertical plate I; a circumferentially evenly distributed threaded hole is provided on the step surface of the middle section of the travel reducer, and a circumferentially evenly distributed through hole is provided on the internal connecting step surface of the driving wheel, and the two are fixedly connected by a circumferential mounting bolt from the driving wheel to the end of the travel reducer; a circumferentially evenly distributed threaded hole is provided on the mounting surface of the main vertical plate II, and a circumferentially evenly distributed through hole is provided on the outer circle of the connecting cover plate, and one threaded hole corresponds to one through hole, and the two are fixedly connected by a circumferential mounting bolt from the connecting cover plate to the end of the main vertical plate II; a circumferentially evenly distributed threaded hole is provided on the mounting surface of the small end of the travel reducer, and a circumferentially evenly distributed through hole is provided on the inner circle of the connecting cover plate, and one threaded hole corresponds to one through hole, and the two are fixedly connected by a circumferential mounting bolt from the connecting cover plate to the end of the travel reducer.

[0009] In some embodiments, the driving wheel is an asymmetric wheel body structure, which is integrally cast; the driving wheel includes a driving tooth structure of an outer ring and a connecting structure of an inner ring; the axial end surface of one side of the connecting structure is recessed in the driving tooth structure to form a step surface, and the step surface is provided with through holes evenly distributed around the circumference; the axial end surface of the other side of the connecting structure protrudes outward from the driving tooth structure of the outer ring, so as to extend the axial length of the through hole, thereby increasing the length of the bolt used in conjunction with the through hole.

[0010] In some embodiments, the radial circumferential surface of the outer ring of the part extending from the driving tooth structure of the connecting structure is set as a slope with a high inside and a low outside, so that the material or slag falling onto the driving wheel is discharged along the slope.

[0011] In some embodiments, the radial circumferential surface of the outer ring of the driving wheel is provided with concave teeth evenly distributed around the circumference, and the axial annular surfaces on both sides of the driving wheel at each concave tooth are each provided with a mud discharge hole connected to the concave tooth, so that the material or slag brought into the inner teeth can be discharged through the mud discharge hole.

[0012] In some embodiments, the outer ring axial surface of the connecting cover plate is provided with through holes evenly distributed around the circumference, which are used to achieve fixed connection with the main vertical plate II; the inner ring axial surface of the connecting cover plate is provided with through holes evenly distributed around the circumference, which are used to achieve fixed connection with the rear end area of ​​the travel reducer; the connecting cover plate is provided with multiple holes distributed around the circumference in the area between the inner and outer ring through holes and used for weight reduction or lifting.

[0013] In some embodiments, it also includes: The sealing plate is a circular plate structure, and its outer diameter is not less than the inner circle diameter of the connecting cover plate, so that the sealing plate can cover the inner circle of the connecting cover plate; the sealing plate is provided with through holes evenly distributed around the circumference, and is fixed together with the connecting cover plate in the rear end area of ​​the travel reducer by means of shared bolts.

[0014] In some embodiments, the driving device further comprises: A connecting plate is fixed to the end of the longitudinal beam, and the tail end planes of the two main vertical plates are fixed to the connecting plate; An upper cover plate is overlapped on the top planes of the two main vertical plates, and a rear end plane of the upper cover plate is fixed on the connecting plate; A lower sealing plate is overlapped on the bottom planes of the two main vertical plates, and the tail end plane of the lower sealing plate is fixed on the connecting plate; The two main curved plates are respectively wrapped on the front arc surfaces of the two main vertical plates, and the upper ends of the main curved plates extend to overlap with the upper cover plate, and the lower ends of the main curved plates extend to overlap with the lower cover plate.

[0015] In some embodiments, the front ends of the upper cover plate and the lower sealing plate are provided with an inner concave arc with the same diameter, and the inner concave arc is seamlessly connected and transitioned with the outer arc of the main curved plate; the inner concave arcs of the upper cover plate and the lower sealing plate and the gap between the two main vertical plates together constitute the rotation space of the driving wheel.

[0016] In some embodiments, the upper cover plate and the lower sealing plate are both asymmetric structural plates, and the upper cover plate and the lower sealing plate are horizontally extended outward on one side of the portion connected to the connecting plate to form a triangular protrusion to increase the connection width with the connecting plate.

[0017] In a second aspect, the present invention provides an engineering machine equipped with the above-mentioned travel drive system device.

[0018] In a third aspect, the present invention provides a method for installing a travel drive system device: Weld the drive unit to the end of the longitudinal beam; Lift the driving wheel and place it in the neutral position between the main vertical plate I and the main vertical plate II of the driving device, with the axial outer convex part of the driving wheel facing the main vertical plate II, and adjust the position of the driving wheel so that it is coaxially arranged with the mounting holes of the two main vertical plates; Lift the travel reducer, first insert it from the mounting hole of the main vertical plate Ⅰ, then enter the center hole of the drive wheel, until the large end mounting surface of the travel reducer fits with the main vertical plate Ⅰ. At this time, the middle section step surface of the travel reducer fits with the internal connection step surface of the drive wheel, the small end of the travel reducer is located in the mounting hole of the main vertical plate Ⅱ, and the small end mounting surface of the travel reducer is coplanar with the main vertical plate Ⅱ. Fix the travel reducer, main vertical plate Ⅰ and drive wheel together with bolts; The connecting cover plate is fixed together with the main vertical plate II and the small end mounting surface of the travel reducer by bolts on the inner and outer circles.

[0019] In some embodiments, the sealing plate is covered on the central hole of the connecting cover plate, and the sealing plate, the connecting cover plate and the small end mounting surface of the travel reducer are fixed together by sharing the inner ring bolts with the connecting cover plate.

[0020] Beneficial effects of the present invention: The present invention adopts a driving device with a double-bearing structure, which is arranged on both sides, has a large overall rigidity, small deformation, and is easy to ensure the processing size. Through machining, it is ensured that the installation distance between the outer connecting surfaces of the two main vertical plates of the driving device is equal to the distance between the outer connecting surfaces from the large end to the small end of the reducer, thereby achieving reliable connection of the entire driving system device. After the entire driving system device is installed, the driving wheel is located at the center plane position of the longitudinal beam to achieve driving the walking system. The present invention adopts a flange ring circumferential bolt connection method to achieve fixed connection between the walking reducer and the driving wheel and the driving device. The connection is simple and reliable, the structure is evenly stressed, and the disadvantages of the prior art are well solved. The installation and disassembly are simple, the cost is low, and the promotion value is extremely high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0022] In the attached picture: Figure 1 It is an axonometric schematic diagram of the travel drive system device of the present invention; Figure 2 It is an exploded view of the travel drive system device of the present invention; Figure 3 It is an axonometric schematic diagram of the driving device of the present invention; Figure 4 An exploded view of the driving device of the present invention; Figure 5 The axle measurement diagram of the driving wheel of the present invention is shown in FIG. Figure 1 ; Figure 6 The axle measurement diagram of the driving wheel of the present invention is shown in FIG. Figure 2 ; Figure 7 The axonometric diagram of the connection cover plate of the present invention is shown in FIG. Figure 1 ; Figure 8 The present invention is shown in the axonometric diagram of the connecting cover plate. Figure 2 ; Fig. 9 It is an axonometric schematic diagram of the travel reducer of the present invention.

[0023] Illustration symbols: 1. driving device; 2. travel reducer; 3. driving wheel; 4. connecting cover plate; 5. sealing plate; 6. bolt; 7. bolt; 8. bolt; 9. bolt.

[0024] 1-1, main vertical plate II; 1-2, main vertical plate I; 1-3, main curved plate; 1-4, lower sealing plate; 1-5, connecting plate; 1-6, reinforcing rib plate I; 1-7, reinforcing rib plate II; 1-8, upper cover plate.

[0025] 2-1, small end mounting surface; 2-2, middle section step surface; 2-3, large end mounting surface.

[0026] 3-1, through hole; 3-2, concave teeth; 3-3, internal connection step surface; 3-4, mud discharge hole; 3-5, inclined surface.

[0027] 4-1, through hole; 4-2, through hole.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0030] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figure 1 , Figure 2 As shown, a walking drive system device includes a double-loaded driving device 1, a driving wheel 3 in an annular structure, a walking reducer 2 and a connecting cover plate 4 in an annular structure; the driving device 1 is arranged at the end of the longitudinal beam, and has a pair of main vertical plates 1-1, 1-2 that are opposite to each other and have mounting holes; the driving wheel 3 is assembled between the two main vertical plates 1-1, 1-2 of the driving device, and the driving wheel 3 can rotate circumferentially between the two main vertical plates 1-1, 1-2; the walking reducer 2 is penetrated through the two main vertical plates 1-1, 1-2 and the driving wheel 3, and the front end area of ​​the walking reducer 2 is fixedly connected to the main vertical plate I1-2, and the middle area of ​​the walking reducer 2 is fixedly connected to the driving wheel 3; the connecting cover plate 4 is fixed to the rear end area of ​​the walking reducer 2 and the main vertical plate II1-1.

[0033] The above-mentioned travel reducer is further described below.

[0034] like Figure 1 , Figure 2 , Fig. 9As shown, the travel reducer 2 has a stepped cylindrical structure as a whole, and the reducer is transitioned from the large end to the small end by three steps, forming a total of three groups of connection positions; the three groups of connection positions respectively realize the combined connection of the travel reducer 2 with the drive device 1 and the drive wheel 3.

[0035] For further solutions, please refer to Figure 1 , Figure 2 , Fig. 9 As shown, the large end mounting surface 2-3 of the travel reducer 2 is matched and connected with the mounting surface of the main vertical plate Ⅰ1-2 of the driving device 1; the middle section step surface 2-2 of the travel reducer 2 is matched and connected with the internal connection step surface 3-3 of the driving wheel 3; the small end of the travel reducer 2 is located in the center hole of the main vertical plate Ⅱ1-1 of the driving device 1, and the small end mounting surface 2-1 of the travel reducer 2 is designed to be coplanar with the outer mounting surface of the main vertical plate Ⅱ1-1; the connecting cover plate 4 is matched and connected with the small end mounting surface 2-1 of the travel reducer 2 and the outer mounting surface of the main vertical plate Ⅱ1-1.

[0036] It should be noted that all parts of the travel drive system are firmly connected by flange surface circumferential connection bolts and are assembled as a whole through multiple groups and rows of circumferential bolts. The connection is simple and reliable, the structure is evenly stressed, the installation and disassembly are simple, and the cost is low. The specific plan is as follows: like Figure 1-9 As shown, the mounting surface of the main vertical plate Ⅰ1-2 is provided with circumferential threaded holes, the mounting surface 2-3 of the large end of the travel reducer 2 is provided with circumferential through holes, and one threaded hole corresponds to one through hole, and bolts 9 are installed from the travel reducer 2 to the circumferential end of the main vertical plate Ⅰ1-2 to fix the two together; the middle section step surface 2-2 of the travel reducer 2 is provided with circumferentially evenly distributed threaded holes, and the internal connection step surface 3-3 of the driving wheel 3 is provided with circumferentially evenly distributed through holes, and bolts 8 are installed from the driving wheel 3 to the circumferential end of the travel reducer 2 to fix the two together; the main vertical plate The mounting surface of Ⅱ1-1 is provided with threaded holes evenly distributed around the circumference, the outer circle of the connecting cover plate 4 is provided with through holes evenly distributed around the circumference, and one threaded hole corresponds to one through hole, and bolts 7 are installed around the circumference from the connecting cover plate 4 to the end of the main vertical plate Ⅱ1-1 to fix the two together; the small end mounting surface 2-1 of the travel reducer 2 is provided with threaded holes evenly distributed around the circumference, the inner circle of the connecting cover plate 4 is provided with through holes evenly distributed around the circumference, and one threaded hole corresponds to one through hole, and bolts 6 are installed around the circumference from the connecting cover plate 4 to the end of the travel reducer 2 to fix the two together.

[0037] The above-mentioned driving wheel is further described below.

[0038] like Figure 2 , Figure 5 , Figure 6As shown, the driving wheel 3 is an asymmetric wheel body structure, which is integrally cast; the driving wheel 3 includes a driving tooth structure of an outer ring and a connecting structure of an inner ring; the axial end surface of one side of the connecting structure is recessed in the driving tooth structure to form a step surface, and the step surface is provided with through holes 3-1 evenly distributed around the circumference; the axial end surface of the other side of the connecting structure protrudes outward from the driving tooth structure of the outer ring, which is used to extend the axial length of the through hole 3-1, thereby increasing the length of the bolt 8 used in conjunction with the through hole 3-1, thereby increasing the connection strength.

[0039] Further solutions, such as Figure 2 , Figure 5 , Figure 6 As shown, the radial circumferential surface of the outer ring of the connecting structure extending from the driving tooth structure is set as a slope 3-5 with a high inside and a low outside, so that the materials or slag that fall onto the driving wheel 3 during actual crawler walking can be discharged along the slope 3-5.

[0040] Further solutions, such as Figure 2 , Figure 5 , Figure 6 As shown, the radial circumferential surface of the outer ring of the driving wheel 3 is provided with concave teeth 3-2 evenly distributed around the circumference, and the axial annular surfaces on both sides of the driving wheel 3 at each concave tooth 3-2 are respectively provided with a mud discharge hole 3-4 connected thereto, so that the materials or slag brought into the concave teeth 3-2 due to walking can be discharged in time through the mud discharge hole 3-4.

[0041] The above-mentioned connection cover is further described below.

[0042] like Figure 1 , Figure 2 , Figure 7 , Figure 8 As shown, the connecting cover plate 4 is a multifunctional connecting circular plate with a thickness of more than 100 mm. It is a high-strength plate. Two groups of mounting holes are opened on the connecting cover plate 4. It is a transition connecting plate that connects and fixes the travel reducer 2 to the main vertical plate Ⅱ1-1 of the driving device 1. Specifically: the outer ring axial surface of the connecting cover plate 4 is provided with through holes 4-1 evenly distributed around the circumference, which is used to achieve a fixed connection with the main vertical plate Ⅱ1-1; the inner ring axial surface of the connecting cover plate 4 is provided with through holes 4-2 evenly distributed around the circumference, which is used to achieve a fixed connection with the rear end area of ​​the travel reducer 2; the connecting cover plate 4 is provided with a plurality of holes distributed around the circumference and used for weight reduction or lifting in the area between the inner and outer ring through holes (the hole can be a through hole or a threaded blind hole, and the shape can be a square hole, a round hole, a triangular hole, etc.).

[0043] Further solutions, such as Figure 1 , Figure 2As shown, the sealing plate 5 is a circular plate structure, and its outer diameter is not less than the inner circle diameter of the connecting cover plate 4, so that the sealing plate 5 can cover the inner circle of the connecting cover plate 4; the sealing plate 5 is provided with through holes evenly distributed around the circumference, and is fixed together with the connecting cover plate 4 in the rear end area of ​​the travel reducer 2 by means of shared bolts 6, so as to isolate external debris from entering.

[0044] The above-mentioned driving device is further described below.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the driving device 1 includes a main vertical plate Ⅰ1-2, a main vertical plate Ⅱ1-1, a connecting plate 1-5, an upper cover plate 1-8, a lower sealing plate 1-4 and two main bending plates 1-3; the connecting plate 1-5 is fixed to the end of the longitudinal beam, and the tail end planes of the two main vertical plates 1-1 and 1-2 are fixed to the connecting plate 1-5; the upper cover plate 1-8 overlaps the top planes of the two main vertical plates 1-1 and 1-2, and the tail end plane of the upper cover plate 1-8 is fixed to the connecting plate 1-5; the lower sealing plate 1-4 overlaps the bottom planes of the two main vertical plates 1-1 and 1-2, and the tail end plane of the lower sealing plate 1-4 is fixed to the connecting plate 1-5; the two main bending plates 1-3 are respectively wrapped on the front arc surfaces of the two main vertical plates 1-1 and 1-2, and the upper end of the main bending plate 1-3 extends to overlap the upper cover plate 1-8, and the lower end of the main bending plate 1-3 extends to overlap the lower sealing plate 1-4.

[0046] The main vertical plate I and main vertical plate II mentioned above are further explained below.

[0047] Continue to refer to Figure 3 , Figure 4 As shown, the main vertical plate Ⅰ1-2 and the main vertical plate Ⅱ1-1 are both vertical plate structures that transition from arc segments to straight line segments. The plates are particularly thickened to ensure the connection strength. The main vertical plates Ⅰ1-2 and the main vertical plates Ⅱ1-1 are both provided with circumferential threaded holes, and the threaded holes are processed through 2mm countersinking.

[0048] The upper cover plate and the lower sealing plate are further described below.

[0049] Continue to refer to Figure 3 , Figure 4 As shown, the upper cover plate 1-8 is an asymmetric structural plate. The middle concave arc divides the upper cover plate 1-8 into two parts, which are connected to the two main vertical plates 1-1 and 1-2 respectively. The concave arc is seamlessly connected and transitioned with the outer arc of the main curved plate 1-3; one side of the root of the upper cover plate 1-8 extends outward to form a triangular protrusion, and the root of the upper cover plate 1-8 is widened to ensure the connection width between the upper cover plate 1-8 and the connecting plate 1-5, thereby increasing the structural strength.

[0050] Continue to refer to Figure 3 , Figure 4 As shown, the structure of the lower sealing plate 1-4 is similar to that of the upper cover plate 1-8, both of which are asymmetric structures. The middle of the lower sealing plate 1-4 is also designed with an inner concave arc, and the radius of the inner concave arc is equal to the diameter of the inner concave arc of the upper cover plate 1-8. The inner concave arc is seamlessly connected and transitioned with the outer arc of the main curved plate 1-3; the root of the lower sealing plate 1-4 is also extended outward to form a triangular protrusion, and the root width of the lower sealing plate 1-4 is equal to the root width of the upper cover plate 1-8, and both are welded to the connecting plate 1-5.

[0051] For further solutions, please refer to Figure 3 , Figure 4 As shown, the upper end of the upper cover plate 1-8 is welded with reinforcing rib plate Ⅰ1-6 and reinforcing rib plate Ⅱ1-7, which are welded at the root positions on both sides of the upper cover plate 1-8 to increase the root connection strength and provide a stronger bearing capacity.

[0052] It should be noted that the concave arcs of the upper cover plate 1-8 and the lower sealing plate 1-4 and the gap between the two main vertical plates 1-1 and 1-2 together constitute the rotation space of the driving wheel; after the main vertical plate I 1-2 and the main vertical plate II 1-1 are welded, the distance from the center plane is equal, and the inner and outer side surfaces are 80mm-100mm away from the inner and outer edges of the main bending plate 1-3, the upper cover plate 1-8 and the lower sealing plate 1-4 to ensure the effective welding distance of the main vertical plates 1-1 and 1-2.

[0053] like Figure 1 , Figure 2 As shown, a method for installing a travel drive system device is as follows: the drive device 1 is welded to the end of the longitudinal beam; the drive wheel 3 is hoisted and placed in a neutral position between the main vertical plate Ⅰ1-2 and the main vertical plate Ⅱ1-1 of the drive device 1, and the axial outer protrusion of the drive wheel 3 faces the main vertical plate Ⅱ1-1, and the front, back, left, right, up and down positions of the drive wheel 3 are adjusted to be coaxially arranged with the mounting holes of the two main vertical plates 1-1 and 1-2; then the travel reducer 2 is hoisted, first inserted through the mounting hole of the main vertical plate Ⅰ1-2, and then into the center hole of the drive wheel 3, until the large end mounting surface 2-3 of the travel reducer 2 is aligned with the main vertical plate Ⅰ 1-2 fits together, at this time, the middle section step surface 2-2 of the travel reducer 2 fits with the internal connection step surface 3-3 of the driving wheel 3, the small end of the travel reducer 2 is located in the mounting hole of the main vertical plate Ⅱ1-1, and the small end mounting surface 2-1 of the travel reducer 2 is coplanar with the main vertical plate Ⅱ1-1, and the travel reducer 2, the main vertical plate Ⅰ1-2, and the driving wheel 3 are fixed together by bolts 9 and bolts 8; the connecting cover plate 4 is fixed together with the main vertical plate Ⅱ1-1 by bolts 7; finally, the sealing plate 5, the connecting cover plate 4 and the small end mounting surface 2-1 of the reducer are fit and connected, and fixed with bolts 6.

[0054] The assembly process of the above drive device is given below: like Figure 3 , Figure 4As shown, the main vertical plate Ⅰ1-2 and the main vertical plate Ⅱ1-1 are first welded to the connecting plate 1-5 as vertical supports. The two main vertical plates 1-1 and 1-2 are located on both sides of the connecting plate 1-5. They are first riveted according to the size required by the design drawings. Then the upper cover plate 1-8 and the lower sealing plate 1-4 are positioned at the appropriate positions of the two main vertical plates 1-1 and 1-2 respectively, and they are positioned and fixed by riveting. In the next step, the two main bending plates 1-3 are respectively connected to the main vertical plates Ⅰ1-2 and the main vertical plates Ⅱ1-1 concentrically, and the two main vertical plates 1-1 and 1-2 are wrapped and connected. After the riveting of the box structure of the drive device is completed, the welding operation is carried out. The welding sequence is staggered to control the welding deformation. Because the box structure of the entire drive device is supported on both sides, it is a double-support and double-bearing structure, so the welding deformation can absorb each other and the deformation is small.

[0055] In summary, the present invention adopts a driving device with a double-bearing structure, which is arranged on both sides, has a large overall rigidity, small deformation, and is easy to ensure the processing size. Through machining, it is ensured that the installation distance between the outer connecting surfaces of the two main vertical plates of the driving device is equal to the distance between the outer connecting surfaces from the large end to the small end of the reducer, thereby achieving a reliable connection of the entire driving system device. After the entire driving system device is installed, the driving wheel is located at the center plane position of the longitudinal beam to achieve the driving of the walking system. The present invention adopts a flange ring circumferential bolt connection method to achieve a fixed connection between the walking reducer and the driving wheel and the driving device. The connection is simple and reliable, the structure is evenly stressed, and the drawbacks of the prior art are well solved. The installation and disassembly are simple, the cost is low, and the promotion value is extremely high.

[0056] The engineering machinery provided by the present invention is described below. The engineering machinery described below and the travel drive system device described above can be referred to in correspondence with each other.

[0057] An engineering machine provided by the present invention may include a travel drive system device as described in any one of the above embodiments.

[0058] The beneficial effects achieved by the engineering machinery provided by the present invention are consistent with the beneficial effects achieved by the travel drive system device provided by the present invention, and will not be described in detail here.

[0059] It should be noted that the above-mentioned engineering machinery can be a crawler crane, a crawler excavator, a crawler pump truck or other crawler engineering machinery. Taking a mining excavator as an example, the specific scheme is as follows: A mining excavator comprises a power device, a traveling device, a rotating device and a working device.

[0060] The power unit of the excavator generally adopts a diesel engine, which is fixed on the turntable through a vibration reduction device to provide power for its traveling device, rotating device and working device.

[0061] The excavator's traveling device supports the entire mass of the excavator and completes the traveling task, and is mostly crawler-type.

[0062] The excavator's slewing device allows the upper part of the vehicle to slew left or right to facilitate excavation and unloading.

[0063] The working device of the excavator is used to directly complete the excavation task, including the boom, arm, bucket and connecting rod mechanism.

[0064] The hydraulic system of the excavator transmits the power output by the engine to the working device and the traveling device.

[0065] The electrical system of the excavator is mainly used to detect some temperatures, pressures, speeds, and switching quantities of the engine, hydraulic pump, main valve, and actuators (hydraulic cylinders, hydraulic motors), and transmit the relevant detection data to the excavator's dedicated controller. The controller integrates various measurement values, set values, and operation signals to send relevant control information to control the engine, hydraulic pump, main valve, and the entire machine.

[0066] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0067] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present invention and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by this application.

[0068] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A walking drive system device, characterized in that: include: A double-loaded driving device is arranged at the end of the longitudinal beam and has a pair of main vertical plates facing each other and provided with mounting holes; A driving wheel in an annular structure is mounted between the two main vertical plates of the driving device, and the driving wheel can rotate circumferentially between the two main vertical plates; A travel reducer is inserted between the two main vertical plates and the driving wheel, and the front end area of ​​the travel reducer is fixedly connected to the main vertical plate I, and the middle area of ​​the travel reducer is fixedly connected to the driving wheel; The connecting cover plate of an annular structure is fixed together with the rear end area of ​​the travel reducer and the main vertical plate II.

2. A travel drive system device according to claim 1, characterized in that: The travel reducer has a stepped cylindrical structure as a whole, and the reducer is transitioned from the large end to the small end by three steps, forming a total of three groups of connection positions; the three groups of connection positions respectively realize the combined connection of the travel reducer with the drive device and the drive wheel.

3. A travel drive system device according to claim 2, characterized in that: The large end mounting surface of the travel reducer is matched and connected with the mounting surface of the main vertical plate I of the drive device; The middle section step surface of the travel reducer is matched and connected with the inner connection step surface of the driving wheel; The small end of the travel reducer is located in the central hole of the main vertical plate II of the driving device, and the small end mounting surface of the travel reducer is designed to be coplanar with the outer side mounting surface of the main vertical plate II; The connecting cover plate is cooperatively connected with the small end mounting surface of the travel reducer and the outer side mounting surface of the main vertical plate II.

4. A travel drive system device according to claim 3, characterized in that: A circumferential threaded hole is provided on the mounting surface of the main vertical plate I, and a circumferential through hole is provided on the mounting surface of the large end of the travel reducer, and one threaded hole corresponds to one through hole, and bolts are installed from the travel reducer to the circumferential mounting of the end of the main vertical plate I to fix the two together; The middle step surface of the travel reducer is provided with threaded holes evenly distributed around the circumference, and the inner connection step surface of the drive wheel is provided with through holes evenly distributed around the circumference, and bolts are installed around the drive wheel to the travel reducer end to fix the two together; The mounting surface of the main vertical plate II is provided with threaded holes evenly distributed around the circumference, and the outer circle of the connecting cover plate is provided with through holes evenly distributed around the circumference, and one threaded hole corresponds to one through hole, and bolts are installed around the end of the connecting cover plate to the main vertical plate II to fix the two together; The small end mounting surface of the travel reducer is provided with threaded holes evenly distributed around the circumference, and the inner circle of the connecting cover plate is provided with through holes evenly distributed around the circumference, and one threaded hole corresponds to one through hole, and bolts are installed around the connecting cover plate to the travel reducer end to fix the two.

5. A travel drive system device according to claim 1, characterized in that: The driving wheel is an asymmetric wheel body structure, which is integrally cast; the driving wheel includes a driving tooth structure of the outer ring and a connecting structure of the inner ring; The axial end surface of one side of the connecting structure is recessed in the driving tooth structure to form a step surface, and the step surface is provided with through holes evenly distributed around the circumference; The axial end surface on the other side of the connection structure protrudes outward from the driving tooth structure of the outer ring, which is used to extend the axial length of the through hole, thereby increasing the length of the bolt used in conjunction with the through hole.

6. A travel drive system device according to claim 5, characterized in that: The radial circumferential surface of the outer ring of the part extending from the driving tooth structure of the connecting structure is set as an inclined surface with a high inner side and a low outer side, so that the material or slag falling onto the driving wheel is discharged along the inclined surface.

7. A travel drive system device according to claim 5, characterized in that: The radial circumferential surface of the outer ring of the driving wheel is provided with concave teeth evenly distributed around the circumference, and the axial annular surfaces on both sides of the driving wheel at each concave tooth are respectively provided with a mud discharge hole connected thereto, so that the material or slag brought into the inner teeth can be discharged through the mud discharge hole.

8. The travel drive system device according to claim 1, characterized in that: The outer axial surface of the connecting cover plate is provided with through holes evenly distributed around the circumference, which is used to achieve fixed connection with the main vertical plate II; the inner axial surface of the connecting cover plate is provided with through holes evenly distributed around the circumference, which is used to achieve fixed connection with the rear end area of ​​the travel reducer; The connection cover plate is provided with a plurality of holes distributed around the circumference and used for weight reduction or hoisting at a position between the inner and outer circle through holes.

9. The travel drive system device according to claim 1, characterized in that: Also includes: The sealing plate is a circular plate structure, and its outer diameter is not less than the inner circle diameter of the connecting cover plate, so that the sealing plate can cover the inner circle of the connecting cover plate; the sealing plate is provided with through holes evenly distributed around the circumference, and is fixed together with the connecting cover plate in the rear end area of ​​the travel reducer by means of shared bolts.

10. The travel drive system device according to claim 1, characterized in that: The driving device further comprises: A connecting plate is fixed to the end of the longitudinal beam, and the tail end planes of the two main vertical plates are fixed to the connecting plate; An upper cover plate is overlapped on the top planes of the two main vertical plates, and a rear end plane of the upper cover plate is fixed on the connecting plate; A lower sealing plate is overlapped on the bottom planes of the two main vertical plates, and the tail end plane of the lower sealing plate is fixed on the connecting plate; The two main curved plates are respectively wrapped on the front arc surfaces of the two main vertical plates, and the upper ends of the main curved plates extend to overlap with the upper cover plate, and the lower ends of the main curved plates extend to overlap with the lower cover plate.

11. A travel drive system device according to claim 10, characterized in that: The front ends of the upper cover plate and the lower sealing plate are both provided with inner concave arcs with the same diameter, and the inner concave arcs are seamlessly connected and transitioned with the outer arcs of the main curved plate; The inner concave arcs of the upper cover plate and the lower sealing plate and the gap between the two main vertical plates together constitute the rotation space of the driving wheel.

12. The travel drive system device according to claim 10, characterized in that: The upper cover plate and the lower sealing plate are both asymmetric structural plates. The upper cover plate and the lower sealing plate are horizontally extended outward on one side of the part connected to the connecting plate to form a triangular protrusion to increase the connection width with the connecting plate.

13. An engineering machine, characterized in that: A travel drive system device according to any one of claims 1 to 12 is installed.

14. A method for installing a travel drive system device, characterized in that: Weld the drive unit to the end of the longitudinal beam; Lift the driving wheel and place it in the neutral position between the main vertical plate I and the main vertical plate II of the driving device, with the axial outer convex part of the driving wheel facing the main vertical plate II, and adjust the position of the driving wheel so that it is coaxially arranged with the mounting holes of the two main vertical plates; Lift the travel reducer, first insert it from the mounting hole of the main vertical plate Ⅰ, then enter the center hole of the drive wheel, until the large end mounting surface of the travel reducer fits with the main vertical plate Ⅰ. At this time, the middle section step surface of the travel reducer fits with the internal connection step surface of the drive wheel, the small end of the travel reducer is located in the mounting hole of the main vertical plate Ⅱ, and the small end mounting surface of the travel reducer is coplanar with the main vertical plate Ⅱ. Fix the travel reducer, main vertical plate Ⅰ and drive wheel together with bolts; The connecting cover plate is fixed together with the main vertical plate II and the small end mounting surface of the travel reducer by bolts on the inner and outer circles.

15. The installation method of a travel drive system device according to claim 14, characterized in that: The sealing plate is covered on the center hole of the connecting cover plate, and the sealing plate, the connecting cover plate and the small end mounting surface of the travel reducer are fixed together by sharing the inner circle bolts with the connecting cover plate.

Images