Work machine and work machine traction device

Abstract

The utility model discloses a kind of traction device for working machine and working machine, and traction device for working machine includes connecting seat, traction frame and support frame, traction frame has traction end and hinged end, hinged end is used to articulate with working machine, to be used to make traction frame can be pitch-adjusted, traction end is formed with traction structure, the upper end of support frame is equipped with two limit seats, two limit seats are spaced apart along the extension direction of support frame, to form the limit space for the placement of traction frame, the traction frame of this traction device and support frame do not need bolt connection, that is, reduce the requirement for dimensional accuracy, also avoid the generation of internal stress.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, specifically relating to a traction device for operating machinery and the operating machinery. Background Technology

[0002] In the application scenarios of engineering vehicles, in order to improve work efficiency, in addition to performing their own work tasks, engineering vehicles often need to undertake auxiliary functions such as towing other equipment or vehicles. For example, in logging farms, the operating machinery needs to transport the cut and sorted logs placed on the towing trolley to the designated location.

[0003] Conventional traction structures consist of a towing hole and a towing hook, but this type of traction structure has limited load capacity. Especially for large engineering vehicles such as construction machinery, their operating environment is often complex, and they may face various harsh working conditions such as mud, bumps, and heavy loads. This places high demands on the quality and reliability of the traction structure, and conventional traction is difficult to meet the needs of actual work.

[0004] The prior art also provides a traction device, which is assembled from multiple welded parts. The multiple welded parts are connected to each other and to the vehicle frame by bolts. This requires high dimensional accuracy of the traction device and is prone to internal stress, which affects the structural strength of the traction device. Utility Model Content

[0005] In view of the above-mentioned defects or deficiencies, this utility model provides a traction device and a working machine for operating machinery, aiming to solve the technical problems of existing traction structures having high dimensional accuracy requirements and being prone to internal stress, which affects the structural strength.

[0006] To achieve the above objectives, the first aspect of this utility model provides a traction device for working machinery, wherein the traction device for working machinery includes: A towing frame has a towing end and a hinged end. The hinged end is used to hinge with the working machinery to enable the towing frame to be pitched and adjusted. The towing end has a towing structure. The support frame has two limiting seats at its upper end. The two limiting seats are spaced apart along the extension direction of the support frame to form a limiting space for the traction frame to be placed.

[0007] In this embodiment of the utility model, the width of the limiting space is greater than the width of the traction frame, the limiting seat is provided with a threaded hole, and the traction device for the working machinery also includes a limiting bolt, which passes through the threaded hole and abuts against the traction frame.

[0008] In this embodiment of the utility model, the traction device for the working machinery also includes a nut, which is located on the side of the limiting seat facing the traction frame, and the limiting bolt passes through the limiting seat surface and the nut in sequence to abut against the traction frame.

[0009] In this embodiment of the utility model, the limiting seat includes a longitudinal plate and a plurality of transverse plates. The longitudinal plate is disposed facing the traction frame, and the plurality of transverse plates are disposed on the side of the longitudinal plate facing away from the traction frame and are arranged sequentially at intervals along the extension direction of the longitudinal plate. The longitudinal plate has threaded holes between two adjacent transverse plates.

[0010] In this embodiment of the utility model, the traction frame includes a frame body and a reinforcing side plate. The frame body forms a traction end and a hinge end, and the reinforcing side plate is provided on the side of the frame body and is abutted by the limiting bolt.

[0011] In this embodiment of the utility model, the reinforcing side plate includes a first side plate segment, a second side plate segment, and a third side plate segment arranged sequentially along the direction from the hinge end toward the traction end. The first side plate segment is concave inward toward the traction end to form an arc surface. The second side plate segment is used for the limit bolt to abut against. The top surface of the third side plate segment extends downward at an incline from the top surface of the second side plate segment.

[0012] In this embodiment of the utility model, the support frame includes a support frame body, a first connecting plate body and a second connecting plate body. The first connecting plate body and the second connecting plate body are used for fixed connection with the working machinery. The two ends of the support frame body are respectively bolted to the first connecting plate body and the second connecting plate body. The limiting seat is provided on the support frame body.

[0013] In this embodiment of the utility model, both ends of the support frame are provided with vertically extending mounting plates, and the mounting plates at both ends of the support frame are respectively bolted to the first connecting plate and the second connecting plate.

[0014] In this embodiment of the utility model, the support frame includes a first side connecting section, a middle support section, and a second side connecting section connected in sequence. The middle support section is horizontally arranged and a limiting seat is provided at the upper end of the middle support section. The first side connecting section extends downward at an incline and connects to the mounting plate portion, and the second side connecting section extends downward at an incline and connects to the mounting plate portion.

[0015] To achieve the above objectives, a second aspect of this utility model provides a working machine including the aforementioned traction device for working machinery. The working machine also includes a track frame, a connecting seat is provided on the top surface of the track frame, the connecting seat is hinged to the hinge end of the traction frame, and two drive wheel mounting seats are provided at the rear end of the track frame, with a support frame mounted between the two drive wheel mounting seats.

[0016] Through the above technical solution, the traction device for working machinery provided in this utility model embodiment has the following beneficial effects: When using the aforementioned traction device for work machinery, the traction frame connects to the external traction equipment, while the support frame provides support for the traction frame. This means that the work machinery and the support frame jointly bear the bending moment experienced by the traction frame during traction, improving the overall bending strength of the traction device. The traction frame is hinged to the work machinery, allowing for a certain angle of pitch adjustment to ensure the traction frame can be mounted on the support frame. Two limiting seats provide lateral restraint for the traction frame. Compared to existing traction structures, there is no need for bolts between the traction frame and the support frame, reducing the requirements for dimensional and installation accuracy of the traction frame and support frame. It also avoids the internal stress problems caused by poor consistency between bolts and threaded holes in existing traction structures, ensuring the structural strength of the traction device.

[0017] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is an overall structural diagram of a traction device for working machinery according to an embodiment of the present utility model; Figure 2 This is an overall structural diagram of the support frame according to one embodiment of the present utility model; Figure 3 This is an overall structural diagram of the traction frame according to one embodiment of the present utility model; Figure 4 This is a transverse cross-sectional view of the support frame according to one embodiment of the present invention; Figure 5 This is a partial structural diagram of a traction device for working machinery according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0021] The following description, with reference to the accompanying drawings, describes the traction device for operating machinery and the operating machinery of this utility model.

[0022] like Figures 1 to 5 As shown, this utility model provides a traction device for working machinery, comprising: The towing frame 2 has a towing end 21 and a hinge end 22. The hinge end 22 is used to hinge with the working machinery so that the towing frame 2 can be pitched and adjusted. The towing end 21 has a towing structure. The support frame 3 has two limiting seats 4 at its upper end. The two limiting seats 4 are spaced apart along the extension direction of the support frame 3 to form a limiting space 41 for the placement of the traction frame 2.

[0023] When using the above-mentioned traction device for working machinery, the traction frame 2 is used to connect to the external traction equipment, and the support frame 3 is used to provide support for the traction frame 2. That is, the working machinery and the support frame 3 jointly bear the bending moment of the traction frame 2 during the traction process, which improves the overall bending strength of the traction device.

[0024] Understandably, if the traction frame 2 and the support frame 3 are connected by conventional bolts, high-precision dimensional control is required for both the traction frame 2 and the support frame 3 to ensure that the connection holes of the traction frame 2 and the support frame 3 are perfectly aligned, which is costly. Furthermore, any deviation between the connection holes will make bolt assembly difficult, and forcibly tightening the bolts will cause deformation of the device, generating internal stress and affecting the structural strength of the device itself. In contrast, the traction frame 2 of this invention is hinged to the connecting seat 1 on the working machinery via a pin. When not connected to external traction equipment, the traction frame 2 can be adjusted to a certain angle around the pin. Even if the actual height of the support frame 3 deviates from the design height, it can be adapted by the rotation of the traction frame 2 itself, ensuring that the traction frame 2 can be erected on the support frame 3. When the traction frame 2 is connected to external traction equipment, under the gravity of the external traction equipment, the traction frame 2 will adhere to the support frame 3. At this time, the connecting seat 1 and the support frame 3 together form a stable support structure, effectively dispersing the stress during the traction process. Furthermore, the two limiting seats 4 on the support frame 3 provide lateral limiting for the traction frame 2, which prevents the traction frame 2 from shifting left or right during traction. At the same time, it can also provide lateral support for the support frame 3, thus avoiding the lateral force on the traction frame 2 being entirely borne by the connecting seat 1 and the pin bearing during vehicle operation.

[0025] Specifically, the traction structure can be a traction hole, used in conjunction with a traction pin; or it can be a traction hook.

[0026] It should be noted that the traction device for operating machinery of this utility model is applicable to various tracked or wheeled operating machinery such as excavators, loaders, and bulldozers, and is especially applicable to tracked excavators. In the following embodiments, the installation and use on an excavator are used as examples for explanation and description.

[0027] like Figure 4As shown in this embodiment of the invention, the width of the limiting space 41 is greater than the width of the traction frame 2. The limiting seat 4 has threaded holes, and the traction device for the working machinery also includes limiting bolts 42, which pass through the threaded holes and abut against the traction frame 2. By setting the limiting bolts 42, the required size and installation precision of the limiting seat 4 can be reduced. Even if there is a certain error between the spacing of the limiting seats 4 and the width of the traction frame 2 during actual installation, the extension length can be adjusted by tightening the limiting bolts 42, ensuring that the limiting bolts 42 on both sides precisely abut against the sides of the traction frame 2, thereby achieving reliable lateral limiting of the traction frame 2.

[0028] like Figure 4 As shown in this embodiment of the utility model, the traction device for the working machinery also includes a nut 43. The nut 43 is located on the side of the limiting seat 4 facing the traction frame 2. The limiting bolt 42 passes through the limiting seat 4 and the nut 43 in sequence to abut against the traction frame 2. The nut 43 can lock the limiting bolt 42, thus achieving a loosening effect. On the other hand, the nut 43, the bolt, and the limiting seat 4 are connected as a whole, thereby increasing the structural strength and rigidity of the limiting bolt 42 after it extends. Specifically, the width of the limiting space 41 is greater than the width of the traction frame 2 + the thickness of the nut 43 × 2 + S, where S is a reserved adjustable assembly gap, which can be set to 10mm or other specific values.

[0029] Of course, this utility model is not limited to this. If the limiting bolt 42 itself has sufficient structural strength and rigidity, the nut 43 can also be set on the side of the limiting seat 4 facing away from the traction frame 2.

[0030] like Figure 5 As shown in this embodiment of the invention, the limiting seat 4 includes a longitudinal plate 44 and multiple transverse plates 45. The longitudinal plate 44 faces the traction frame 2, and the multiple transverse plates 45 are located on the side of the longitudinal plate 44 facing away from the traction frame 2, and are arranged sequentially at intervals along the extending direction of the longitudinal plate 44. Each longitudinal plate 44 has threaded holes between adjacent transverse plates 45. The arrangement of multiple transverse plates 45 enhances the overall deformation resistance of the limiting seat 4. The threaded holes are used for the limiting bolts 42 to pass through. By placing the threaded holes between adjacent transverse plates 45, the radial force generated by the limiting bolts 42 when they are pressed against the traction frame 2 is effectively dispersed, preventing the longitudinal plate 44 from bending or cracking due to excessive local stress, and further improving the stability and load-bearing capacity of the matching structure between the limiting seat 4 and the limiting bolts 42.

[0031] like Figure 3As shown in this embodiment of the invention, the traction frame 2 includes a frame body 23 and a reinforcing side plate 24. The frame body 23 forms a traction end 21 and a hinge end 22. The reinforcing side plate 24 is disposed on the side of the frame body 23 and is abutted by the limiting bolt 42. The reinforcing side plate 24 is made of the frame body 23 by welding or integral molding process, and its thickness is greater than that of the side plate of the frame body 23. This can significantly enhance the structural strength of the traction frame 2 at the abutment part of the limiting bolt 42 and prevent dents or deformation after long-term stress.

[0032] like Figure 5 As shown in the embodiment of this utility model, the reinforcing side plate 24 includes a first side plate segment 241, a second side plate segment 242 and a third side plate segment 243 arranged sequentially along the direction from the hinge end 22 toward the traction end 21. The first side plate segment 241 is concave inward toward the traction end 21 to form an arc surface. The second side plate segment 242 is used for the limiting bolt 42 to abut. The top surface of the third side plate segment 243 extends downward at an incline from the top surface of the second side plate segment 242. As described above, the traction frame 2 is subjected to the gravity of the external traction equipment, and the stress area is concentrated in the lower part of the traction frame 2. Therefore, the inclined setting of the top surface of the third side plate section 243 makes the reinforcing side plate 24 have a trapezoidal structure that is narrow at the top and wide at the bottom, reducing the material redundancy in the upper non-major stress area and achieving lightweight design while ensuring structural strength. The second side plate section 242, as the direct abutment part of the limiting bolt 42, has sufficient contact area to ensure that the limiting bolt 42 can abut against it. The arc surface design of the first side plate section 241 is used for stress relief.

[0033] like Figure 2 As shown in this embodiment of the invention, the support frame 3 includes a support frame body 31, a first connecting plate body 32, and a second connecting plate body 33. The first connecting plate body 32 and the second connecting plate body 33 are welded and fixed to the drive wheel mounting seat 51. The two ends of the support frame body 31 are bolted to the first connecting plate body 32 and the second connecting plate body 33, respectively. A limiting seat 4 is provided on the support frame body 31. Therefore, the support frame 3 is a split structure, and the connecting plate body is fixed by welding. This eliminates the need for additional connecting structures on the excavator, avoiding modifications to the original structure of the excavator. It can be directly adapted to existing excavators. The bolted connection between the support frame body 31 and the connecting plate body facilitates the installation, disassembly, and subsequent maintenance and replacement of the support frame body 31.

[0034] It should be noted that, based on the specific structure of the excavator, the first connecting plate 32 and the second connecting plate 33 can also be welded to other locations on the excavator.

[0035] like Figures 1 to 3As shown in this embodiment of the invention, both ends of the support frame 31 are provided with vertically extending mounting plates 314, which are bolted to the first connecting plate 32 and the second connecting plate 33, respectively. Thus, the support frame 31 is completely positioned between the two drive wheel mounting seats 51, without interfering with the track frame 5 or other devices or structures on the track frame 5. Specifically, connecting plates are welded to both the upper and lower ends of the drive wheel mounting seat 51, and each connecting plate extends outward from the drive wheel mounting seat 51 towards the inner side of the track frame 5. Simultaneously, the mounting plate 314 forms a stable connection structure with the upper and lower connecting plates, ensuring both the firmness of the connection between the support frame 31 and the drive wheel mounting seat 51 and allowing the force on the support frame 31 to be transmitted to the drive wheel mounting seat 51 through the upper and lower connecting plates.

[0036] like Figure 2 As shown, in this embodiment of the invention, the support frame 31 includes a first side connecting section 311, a middle support section 312, and a second side connecting section 313 connected sequentially. The middle support section 312 is horizontally arranged, and a limiting seat 4 is provided at its upper end. The first side connecting section 311 extends downward at an incline and connects to the mounting plate portion 314, and the second side connecting section 313 extends downward at an incline and connects to the mounting plate portion 314. Thus, the support frame 31 is arched, which can effectively disperse the vertical and horizontal forces generated during traction operations, enhancing the overall load-bearing capacity and deformation resistance of the support frame 31. Furthermore, the upper width of the middle support section 312 is greater than the lower width.

[0037] To achieve the above objectives, a second aspect of this utility model provides a working machine including the aforementioned traction device for working machinery. The working machine further includes a track frame 5, with a connecting seat 1 provided on its top surface. The connecting seat 1 is hinged to the hinged end 22 of the traction frame 2. Two drive wheel mounting seats 51 are provided at the rear end of the track frame 5, and a support frame 3 is mounted between the two drive wheel mounting seats 51. Since the working machine adopts all the technical solutions of the above embodiments, it at least has the aforementioned beneficial effects.

[0038] like Figure 1 As shown in this embodiment of the invention, the front end of the connecting seat 1 abuts against the slewing seat 52 on the track frame 5. When the vehicle brakes, the impact force of the traction device is transmitted to the connecting seat 1 through the traction frame 2. The front end of the connecting seat 1 abuts against the slewing seat 52, which can directly disperse part of the impact force to the slewing seat 52. The slewing seat 52 is used to install the slewing device of the working machinery and is a key load-bearing structure for transmitting the weight of the whole machine and the working load. Its structural strength is sufficient to withstand the impact force during the traction process.

[0039] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0042] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A traction device for working machinery, characterized in that, The traction device for the operating machinery includes: The traction frame (2) has a traction end (21) and a hinge end (22), the hinge end (22) being hinged to the working machinery to enable the traction frame (2) to be pitch-adjustable, and the traction end (21) having a traction structure. The support frame (3) has two limiting seats (4) at its upper end. The two limiting seats (4) are spaced apart along the extension direction of the support frame (3) to form a limiting space (41) for the traction frame (2) to be placed.

2. The traction device for working machinery according to claim 1, characterized in that, The width of the limiting space (41) is greater than the width of the traction frame (2). The limiting seat (4) has a threaded hole. The traction device for the working machinery also includes a limiting bolt (42). The limiting bolt (42) passes through the threaded hole and abuts against the traction frame (2).

3. The traction device for working machinery according to claim 2, characterized in that, The traction device for the working machinery also includes a nut (43), which is located on the side of the limiting seat (4) facing the traction frame (2). The limiting bolt (42) passes through the limiting seat (4) and the nut (43) in sequence to abut against the traction frame (2).

4. The traction device for working machinery according to claim 2, characterized in that, The limiting seat (4) includes a longitudinal plate (44) and a plurality of transverse plates (45). The longitudinal plate (44) is disposed facing the traction frame (2). The plurality of transverse plates (45) are disposed on the side of the longitudinal plate (44) facing away from the traction frame (2) and are arranged sequentially at intervals along the extension direction of the longitudinal plate (44). The longitudinal plate (44) has threaded holes between two adjacent transverse plates (45).

5. The traction device for working machinery according to claim 2, characterized in that, The traction frame (2) includes a frame body (23) and a reinforcing side plate (24). The frame body (23) forms the traction end (21) and the hinge end (22). The reinforcing side plate (24) is located on the side of the frame body (23) and is abutted by the limiting bolt (42).

6. The traction device for working machinery according to claim 5, characterized in that, The reinforcing side plate (24) includes a first side plate segment (241), a second side plate segment (242), and a third side plate segment (243) arranged sequentially along the direction from the hinge end (22) toward the traction end (21). The first side plate segment (241) is recessed inward toward the traction end (21) to form an arc surface. The second side plate segment (242) is used for the limit bolt (42) to abut against. The top surface of the third side plate segment (243) extends downward at an angle from the top surface of the second side plate segment (242).

7. The traction device for working machinery according to any one of claims 1 to 6, characterized in that, The support frame (3) includes a support frame body (31), a first connecting plate body (32) and a second connecting plate body (33). The first connecting plate body (32) and the second connecting plate body (33) are used to be fixedly connected to the working machinery. The two ends of the support frame body (31) are bolted to the first connecting plate body (32) and the second connecting plate body (33) respectively. The limiting seat (4) is provided on the support frame body (31).

8. The traction device for working machinery according to claim 7, characterized in that, Both ends of the support frame (31) are provided with vertically extending mounting plates (314), and the mounting plates (314) at both ends of the support frame (31) are bolted to the first connecting plate (32) and the second connecting plate (33) respectively.

9. The traction device for working machinery according to claim 8, characterized in that, The support frame (31) includes a first side connecting section (311), a middle support section (312), and a second side connecting section (313) connected in sequence. The middle support section (312) is horizontally arranged, and the upper end of the middle support section (312) is provided with the limiting seat (4). The first side connecting section (311) extends downward at an incline and connects to the mounting plate (314), and the second side connecting section (313) extends downward at an incline and connects to the mounting plate (314).

10. A type of operating machinery, characterized in that, The working machine includes a track frame (5) and a traction device for the working machine according to any one of claims 1 to 9. The top surface of the track frame (5) is provided with a connecting seat (1), the connecting seat (1) is hinged to the hinge end (22) of the traction frame (2), and one end of the track frame (5) is provided with two drive wheel mounting seats (51). The support frame (3) is mounted between the two drive wheel mounting seats (51).

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