Driving seat with double-bearing structure, walking driving system and engineering machinery

Abstract

The utility model discloses a driving seat with a double-bearing structure, a walking driving system and engineering machinery. The driving seat comprises a connecting plate, an upper cover plate, a lower sealing plate, two main bent plates and a pair of main vertical plates which are oppositely arranged and are provided with mounting holes, the connecting plate is fixed to the end face of the chassis longitudinal beam structural body. The two main vertical plates are fixed to the connecting plate, and the neutral position between the two main vertical plates is used for installing a driving wheel. The upper cover plate is in lap joint with the top planes of the two main vertical plates, and the tail end plane of the upper cover plate is fixed to the connecting plate. The lower sealing plate is lapped 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 bent plates wrap the front arc faces of the two main vertical plates respectively, the upper ends of the main bent plates extend to be in lap joint with the upper cover plate, and the lower ends of the main bent plates extend to be in lap joint with the lower sealing plate. According to the driving seat, on one hand, the driving seat can be prevented from bearing large one-way unbalance loading, on the other hand, the machining and manufacturing requirements are low, and the installation requirement of a driving system is low.

Description

Technical Field

[0001] The utility model relates to a driving seat with a double-bearing structure and belongs to the technical field of construction machinery. Background Art

[0002] The driving seat of a mining excavator is an important connecting link between the traveling speed reducer and the driving wheel, and is an important installation support for the traveling speed reducer and the driving wheel, bearing the driving force of the whole machine. The traditional driving seats of mining excavators in construction machinery all adopt a single-side flange ring structure. The traveling speed reducer is fixedly connected to the driving seat through circumferential bolts, and the driving wheel is then connected to the speed reducer through bolts. For this single-side driving seat structure, on the one hand, when welding, the heat on one side is relatively large, and the shrinkage deformation will be relatively large, causing the outer end of the driving seat to be prone to warping deformation. On the other hand, when bearing the driving force of the whole machine, the driving seat with a single-side flange structure bears a large eccentric load, which has a great impact on the structural strength.

[0003] With the in-depth research, a traveling drive installation structure, a chassis drive system and an engineering vehicle (ZL202210081752.X) also disclose a connection structure of two flange rings. Although the structure of this driving seat can solve the phenomenon of eccentric load on the single-side flange ring to a certain extent, this driving seat connection structure is applicable to the drive system structure with spline shaft connection. The connection precision of the spline shaft is extremely high, and the concentricity of the two flange rings and the control precision of the dimension chain are very strict, generally with a machining allowance of only a few tenths of a millimeter, and the manufacturing requirements are extremely high. Summary of the Invention

[0004] Based on the above background and facing the problems encountered in the industry, the utility model provides a driving seat with a double-bearing structure, which can, on the one hand, avoid the driving seat from bearing a large single-sided eccentric load, and on the other hand, has relatively loose processing and manufacturing requirements and low installation requirements for the traveling drive system.

[0005] The utility model is realized according to the following technical solutions:

[0006] In a first aspect, the utility model provides a driving seat with a double-bearing structure, including:

[0007] A connecting plate, fixed to the end face of the chassis longitudinal beam structure;

[0008] A pair of main vertical plates facing each other and provided with mounting holes, fixed to the connecting plate, and the space between the two main vertical plates is used for installing the driving wheel;

[0009] An upper cover plate, lapped on the top planes of the two main vertical plates, and the end plane of the upper cover plate is fixed to the connecting plate;

[0010] A lower sealing plate, lapped on the bottom planes of the two main vertical plates, and the end plane of the lower sealing plate is fixed to the connecting plate;

[0011] Two main bent plates are respectively wrapped on the front arc surfaces of the two main vertical plates, and the upper ends of the main bent plates extend to overlap with the upper cover plate, and the lower ends of the main bent plates extend to overlap with the lower sealing plate.

[0012] In some embodiments, the two main vertical plates are both provided with threaded holes evenly distributed in a circumferential manner, which are used to cooperate with bolts to fix the traveling speed reducer passing through the two main vertical plates and the driving wheel.

[0013] In some embodiments, 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 bent plates; the inner concave arcs of the upper cover plate and the lower sealing plate and the gaps between the two main vertical plates together form the rotation space of the driving wheel.

[0014] In some embodiments, the upper cover plate and the lower sealing plate are both asymmetric structural plates, and one side of the upper cover plate and the lower sealing plate at the part connected to the connecting plate horizontally extends outwards to form a triangular protrusion to increase the connection width with the connecting plate.

[0015] In some embodiments, at least one reinforcing rib plate is fixed at the top plane of the upper cover plate at the part connected to the connecting plate.

[0016] In some embodiments, the number of the reinforcing rib plates is two, which are respectively fixed on both sides of the top plane of the upper cover plate.

[0017] In some embodiments, the two main vertical plates are both vertical plate structures that transition from the front arc segments to the rear straight ends, and the mounting holes on the two main vertical plates are arranged coaxially.

[0018] In some embodiments, a predetermined distance is left between the inner and outer sides of the two main vertical plates and the inner and outer edges of the main bent plates, the upper cover plate and the lower sealing plate to ensure the weld distance of the main vertical plates.

[0019] In a second aspect, the present invention provides a traveling drive system, including:

[0020] The above-mentioned drive seat with a double-bearing structure;

[0021] A driving wheel, assembled between the two vertical plates of the drive seat, and the driving wheel can rotate circumferentially between the two main vertical plates;

[0022] A traveling speed reducer is passed through the two main vertical plates and the driving wheel, and is fixed together with the driving wheel and one of the main vertical plates by bolts;

[0023] A connecting cover plate is used to fix the traveling speed reducer and the other main vertical plate together by bolts.

[0024] In a third aspect, the present utility model provides a construction machinery, which includes the above-mentioned driving seat with a double-bearing structure; or, which includes the above-mentioned traveling drive system.

[0025] Advantages of the present utility model:

[0026] The present utility model provides a driving seat with a double-bearing structure, which has a simple structure, reasonable layout, and small welding deformation. At the same time, the requirements for processing and manufacturing are low, the manufacturing is easy to achieve, and the innovative design of this two-way bearing and two-way connection structure form can make the load evenly distributed, avoid the driving seat from bearing a large single-sided eccentric load, and have a higher service life.

[0027] The present utility model has relatively low requirements for assembly, the tolerance allowance of the dimension chain of the traveling drive system is relatively wide, the connection reliability of each component of the traveling drive system is high, and the practicability is strong. Description of the drawings

[0028] The drawings, as a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model, but do not constitute an improper limitation to the present utility model. Obviously, the drawings described below are only some embodiments, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0029] In the drawings:

[0030] Figure 1 is the axonometric drawing of the driving seat with a double-bearing structure of the present utility model Figure 1 ;

[0031] Figure 2 is the axonometric drawing of the driving seat with a double-bearing structure of the present utility model Figure 2 ;

[0032] Figure 3 is the exploded view of the driving seat with a double-bearing structure of the present utility model;

[0033] Figure 4 is the application and installation schematic diagram of the driving seat with a double-bearing structure of the present utility model.

[0034] Reference signs in the drawings: 1, driving seat; 2, traveling reduction gear; 3, driving wheel; 4, connecting cover plate; 1-1, main vertical plate II; 1-2, main vertical plate I; 1-3, main bending 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.

[0035] It should be noted that these drawings and text descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation mode

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] As Figure 1 、 Figure 2 、 Figure 3 shown, a drive seat with a double-bearing structure includes a connecting plate 1-5, an upper cover plate 1-8, a lower sealing plate 1-4, two main bending plates 1-3, and a pair of main vertical plates I 1-2 and main vertical plates II 1-1 that are opposed to each other and are provided with installation holes; the connecting plate 1-5 is fixed to the end face of the chassis longitudinal beam structure; the main vertical plates I 1-2 and main vertical plates II 1-1 are fixed to the connecting plate 1-5, and the space between the main vertical plates I 1-2 and main vertical plates II 1-1 is used for installing the drive wheel 3; the upper cover plate 1-8 overlaps the top planes of the two main vertical plates 1-1 and 1-2, and the 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 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 around the front arc surfaces of the two main vertical plates 1-1 and 1-2, and the upper ends of the main bending plates 1-3 extend to overlap with the upper cover plate 1-8, and the lower ends of the main bending plates 1-3 extend to overlap with the lower sealing plate 1-4.

[0040] The following further describes the above-mentioned main vertical plate I and main vertical plate II.

[0041] Continue to refer to Figure 1 、Figure 2 , Figure 3 As shown, the main vertical plate Ⅰ 1-2 and the main vertical plate Ⅱ 1-1 are both vertical plate structures that transition from an arc segment to a straight segment. The plates are particularly thickened to ensure the connection strength. The mounting holes on the two main vertical plates 1-1 and 1-2 are arranged coaxially. Threaded holes evenly distributed in a circle are provided on both the main vertical plate Ⅰ 1-2 and the main vertical plate Ⅱ 1-1, and the threaded holes are processed by counterboring a 2-mm flat surface for cooperating with bolts to fixedly penetrate the traveling speed reducer 2 disposed in the two main vertical plates 1-1, 1-2 and the driving wheel 3.

[0042] The above-mentioned upper cover plate and lower sealing plate are further described below.

[0043] Continue to refer to Figure 1 , Figure 2 , Figure 3 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 left and right parts, which are respectively connected to the two main vertical plates 1-1 and 1-2. The concave arc is seamlessly connected and transitioned with the outer arc of the main bending plate 1-3. A triangular protrusion extends outward from one side of the root of the upper cover plate 1-8 to widen the root of the upper cover plate 1-8, ensuring the connection width between the upper cover plate 1-8 and the connecting plate 1-5 and increasing the structural strength.

[0044] Continue to refer to Figure 1 , Figure 2 , Figure 3 As shown, the lower sealing plate 1-4 is similar in structural form to the upper cover plate 1-8, both being asymmetric structures. The middle of the lower sealing plate 1-4 is also designed with a concave arc, and the radius of the concave arc is equal to the diameter of the concave arc of the upper cover plate 1-8. The concave arc is seamlessly connected and transitioned with the outer arc of the main bending plate 1-3. A triangular protrusion is also formed by extending outward from the root of the lower sealing plate 1-4. 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 and connected to the connecting plate 1-5.

[0045] For a further solution, continue to refer to Figure 1 , Figure 2 , Figure 3 As shown, reinforcing rib plates Ⅰ 1-6 and Ⅱ 1-7 are welded to the upper end of the upper cover plate 1-8, and are welded at positions on both sides of the upper cover plate 1-8 near the root, increasing the root connection strength and having a stronger load-bearing capacity.

[0046] For a further solution, continue to refer to Figure 1 , Figure 2 , Figure 3 As shown, after the main vertical plate Ⅰ 1-2 and the main vertical plate Ⅱ 1-1 are welded, the distances from the center plane are equal, and there is a distance of 80 mm - 100 mm between the inner and outer sides and 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, ensuring the effective weld distance between the two main vertical plates 1-1 and 1-2.

[0047] The assembly process of the above-mentioned driving seat is given below:

[0048] Continue to refer to Figure 1 、 Figure 2 、 Figure 3 As shown in the figures, the main vertical plate Ⅰ1-2 and the main vertical plate Ⅱ1-1, as vertical supports, are first butt-welded with the connecting plate 1-5. The two main vertical plates 1-1 and 1-2 are located on both sides of the connecting plate 1-5. First, rivet them according to the dimensions required by the design drawings. Then, position the upper cover plate 1-8 and the lower sealing plate 1-4 to the appropriate positions of the two main vertical plates 1-1 and 1-2 respectively, and fix their positions by riveting. Next, connect the two main bending plates 1-3 to the main vertical plate Ⅰ1-2 and the main vertical plate Ⅱ1-1 concentrically by butt-welding, and wrap and connect the two main vertical plates 1-1 and 1-2. After the riveting of the box structure of the driving seat is completed, welding operations are carried out. The welding sequence is staggered to control welding deformation. Since the box structure of the entire driving seat has supports on both sides and is a double-support and double-bearing structure, the welding deformation can be absorbed by each other and the deformation is small.

[0049] As Figure 4 shown, when the driving seat 1 is welded, the connection of the entire traveling drive system can be realized. The driving wheel 3 is assembled between the two vertical plates 1-1 and 1-2 of the driving seat 1, and the driving wheel 3 can rotate circumferentially between the two main vertical plates 1-1 and 1-2; the traveling speed reducer 2 is passed through the two main vertical plates 1-1 and 1-2 and the driving wheel 3, and is fixed to the driving wheel 3 and the main vertical plate Ⅰ1-2 by bolts, so as to realize the traveling speed reducer 2 driving the driving wheel 3 to rotate and complete the chassis traveling; the connecting cover plate 4 is used to fix the traveling speed reducer 2 and the main vertical plate Ⅱ1-1 together by bolts. The connecting plate 1-5 of the driving seat 1 is connected and welded to the chassis longitudinal beam structure body to form a side beam structure, constituting a four-wheel-and-one-belt layout system.

[0050] In summary, the present utility model provides a driving seat with a double-bearing structure, which has a simple structure, reasonable layout, and small welding deformation. At the same time, the requirements for processing and manufacturing are low, the manufacturing is easy to realize, and the innovative design of this two-way bearing and two-way connection structure form can make the load evenly distributed, avoid the driving seat from bearing a large single-sided eccentric load, and have a higher service life. The present utility model has low assembly requirements, a relatively wide tolerance margin for the dimension chain of the traveling drive system, high connection reliability of each component of the traveling drive system, and strong practicability.

[0051] Next, the construction machinery provided by the present utility model will be described. The construction machinery described below can be mutually corresponding and referred to the driving seat and the traveling drive system described above.

[0052] A construction machinery provided by the present utility model may include the traveling drive system described in any one of the above embodiments.

[0053] If the beneficial effects achieved by the construction machinery provided by the present utility model are consistent with those achieved by the driving seat and the traveling drive system provided by the present utility model, they will not be elaborated here.

[0054] It should be noted that the above construction machinery can be a crawler crane, a crawler excavator, a crawler pump truck or other crawler construction machinery. Taking a mining excavator as an example, the specific solution is as follows:

[0055] A mining excavator includes a power device, a traveling device, a slewing device and a working device.

[0056] The power device of the excavator generally uses a diesel engine, which is fixed on the turntable through a vibration damping device to provide power for its traveling device, slewing device and working device, etc.

[0057] The traveling device of the excavator supports the whole machine mass of the excavator and completes the traveling task, and mostly uses crawlers.

[0058] The slewing device of the excavator slews the upper part left or right for excavation and discharging.

[0059] The working device of the excavator is used to directly complete the excavation task, including a boom, an arm, a bucket and a linkage mechanism, etc.

[0060] The hydraulic system of the excavator transmits the power output by the engine to the working device and the traveling device.

[0061] The electrical system of the excavator mainly detects some temperatures, pressures, speeds and switch quantities of the engine, hydraulic pump, main valve and actuators (hydraulic cylinders, hydraulic motors) and transmits the relevant detection data to the special controller of the excavator. The controller synthesizes various measured values, set values and operation signals to issue relevant control information to control the engine, hydraulic pump, main valve and the whole machine.

[0062] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0063] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments rather than other features, the combinations of the features of different embodiments also mean being within the protection scope of the present utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use them in a combined manner according to the known technical solutions and the technical problems to be solved by this application.

[0064] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications using the technical content prompted above as equivalent embodiments of equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A driving seat with a double-bearing structure, characterized in that Comprising: A connecting plate, fixed to the end face of the chassis longitudinal beam structure; A pair of main vertical plates which are opposed to each other and are provided with mounting holes, fixed to the connecting plate, and the space between the two main vertical plates is used for mounting a driving wheel; An upper cover plate, lapped on the top planes of the two main vertical plates, and the tail end plane of the upper cover plate is fixed to the connecting plate; A lower sealing plate, lapped on the bottom planes of the two main vertical plates, and the tail end plane of the lower sealing plate is fixed to the connecting plate; Two main bending plates, respectively wrapped on the front arc surfaces of the two main vertical plates, and the upper ends of the main bending plates extend to lap with the upper cover plate, and the lower ends of the main bending plates extend to lap with the lower sealing plate.

2. The driving seat with a double-bearing structure according to claim 1, characterized in that: Threaded holes evenly distributed in a circumferential manner are provided on both of the two main vertical plates, for cooperating with bolts to fixedly penetrate a traveling speed reducer arranged in the two main vertical plates and the driving wheel.

3. The driving seat with a double-bearing structure according to claim 1, characterized in that: Inner concave arcs with the same diameter are provided at the front ends of the upper cover plate and the lower sealing plate, and the inner concave arcs are seamlessly connected and transitioned with the outer arcs of the main bending plates; The inner concave arcs of the upper cover plate and the lower sealing plate and the gaps between the two main vertical plates together form the rotation space of the driving wheel.

4. The driving seat with a double-bearing structure according to claim 1, characterized in that: Both the upper cover plate and the lower sealing plate are asymmetric structural plates, and one side of the upper cover plate and the lower sealing plate at the part connected to the connecting plate forms a triangular protrusion by horizontally extending outwards to increase the connection width with the connecting plate.

5. The driving seat with a double-bearing structure according to claim 1, characterized in that: At least one reinforcing rib plate is fixed to the top plane of the upper cover plate at the part connected to the connecting plate.

6. The driving seat with a double-bearing structure according to claim 5, characterized in that: The number of the reinforcing rib plates is two, and they are respectively fixed on both sides of the top plane of the upper cover plate.

7. The driving seat with a double-bearing structure according to claim 1, characterized in that: Both of the two main vertical plates are vertical plate structures that transition from the front arc segments to the rear straight ends, and the mounting holes on the two main vertical plates are arranged coaxially.

8. The driving seat with a double-bearing structure according to claim 1, characterized in that: A predetermined distance is left between the inner and outer side surfaces of the two main vertical plates and the inner and outer edges of the main bending plates, the upper cover plate and the lower sealing plate, to ensure the weld distance of the main vertical plates.

9. A walking drive system, characterized in that, Comprising: The driving seat with a double-bearing structure according to any one of claims 1 to 8; A driving wheel, assembled between the two vertical plates of the driving seat, and the driving wheel can rotate circumferentially between the two main vertical plates; A traveling speed reducer, penetrating through the two main vertical plates and the driving wheel, and fixedly connected with the driving wheel and one of the main vertical plates by bolts; A connecting cover plate, used for fixedly connecting the traveling speed reducer and the other main vertical plate by bolts.

10. An engineering machinery, characterized in that: Comprising the driving seat with a double-bearing structure according to any one of claims 1 to 8; or, comprising the traveling drive system according to claim 9.

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