Power towing cable support structure, track frame and power towing excavator

Abstract

The utility model relates to the technical field of excavators, in particular to a towing cable support structure, a track frame and a towing excavator. The support structure comprises a bearing frame, a supporting frame and a cable barrel. The bearing frame is arranged on the lower side of the track frame, the bearing frame comprises a fixing part and a connecting part, the two ends of the connecting part are connected with the first end of the fixing part respectively, and the second end of the fixing part is fixed to the bottom side of a lower cover plate of the track frame; the supporting frame comprises a supporting ring and supporting rods, the supporting rods are located on the two sides of the supporting ring and fixed to the bearing frame, and the cable barrel is inserted into the supporting ring of the supporting frame. The cable support solves the problems that an existing cable support structure has high requirements for planeness of an upper cover plate and a lower cover plate, assembly is difficult due to large welding deformation, and the structure is heavy.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a towing cable support structure, a crawler frame and a towing excavator. Background Art

[0002] An excavator, also known as an excavator or backhoe, is an earth-moving machine that uses a bucket to dig materials above or below the surface of the machine and load them into a transport vehicle or unload them to a stockpile. The materials excavated by the excavator are mainly soil, coal, silt, and pre-loosened soil and rocks.

[0003] The towed electric excavator needs to have a cable support structure at the rear of the equipment. The cable support structure at the rear of the chassis of the traditional towed electric excavator is as follows: Figure 1 , Figure 2 As shown, the cable drum 3 is installed on a box structure 2, and the box structure 2 is welded on the X frame (track frame 1). Figure 3 , Figure 4 As shown, the box structure 2 is composed of several vertical plates 21, and the vertical plates 21 are welded in the gap between the upper cover plate 11 and the lower cover plate 12 of the crawler frame 1. This support structure has the following technical problems:

[0004] ① The flatness requirement for the upper cover plate 11 and the lower cover plate 12 of the crawler frame 1 is high. If the flatness of the upper cover plate 11 and the lower cover plate 12 is poor, it may be impossible to insert the gap between the upper and lower cover plates 12, or the welding strength may be insufficient.

[0005] ② The height of the box section is greatly deformed after welding. For example, the height before welding the bracket structure is 330mm, and the local height deformation after welding the bracket structure is 310mm. As a result, the manufacturing tolerance of the box structure 2 of the cable bracket is too large, which is difficult to assemble and process.

[0006] ③ The cable bracket is only used to bear the weight of the cable itself and the drag force caused by left and right rotation. This box-type structure 2 is relatively bulky. Utility Model Content

[0007] In view of the deficiencies in the prior art, the purpose of the embodiments of the utility model is to provide a towing cable bracket structure to solve the problems of the existing cable bracket structure having high requirements on the flatness of the upper and lower cover plates, large welding deformation resulting in difficulty in assembly, and bulky structure.

[0008] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0009] A towing cable support structure is installed at the rear of a crawler frame of an excavator, and the support structure includes: a supporting frame, a support frame and a cable reel; the supporting frame is arranged at the lower side of the crawler frame, and the supporting frame includes a fixing portion and a connecting portion, the two ends of the connecting portion are respectively connected to the first end of the fixing portion, and the second end of the fixing portion is fixed to the bottom side of the lower cover plate of the crawler frame; the supporting frame includes a supporting ring and a supporting rod, the supporting rod is located on both sides of the supporting ring, and the supporting rod is fixed on the supporting frame, and the cable reel is inserted into the supporting ring of the supporting frame.

[0010] Optionally, the supporting frame is a plate-shaped structure, the fixing portion is a fixing plate, the fixing plate is in contact with the bottom side of the lower cover plate of the crawler frame, and the connecting portion is a connecting plate, which is parallel and coplanar with the fixing plate.

[0011] Optionally, the fixing plate and the connecting plate are an integral structure, and the fixing plate and the connecting plate form a U-shaped supporting frame structure, and the open end of the supporting frame is connected to the bottom side of the crawler frame.

[0012] Optionally, the fixing plate of the support frame is connected to the lower cover plate of the track frame by welding.

[0013] Optionally, there are at least two support frames, all of which are arranged along the axial direction of the cable drum, and the support rings of all of the support frames are coaxially arranged.

[0014] Optionally, two support frames are provided, wherein two ends of one support frame are respectively fixed to two fixing parts, and two ends of the other support frame are respectively fixed to two ends of the connecting part.

[0015] Optionally, the support ring includes an upper closing plate and a lower closing plate, two ends of the lower closing plate are fixed on support rods on both sides, the cable reel is mounted on the lower closing plate, and the lower closing plate is crimped onto the upper closing plate.

[0016] Optionally, the length of the support ring along the axial direction of the cable drum is greater than the length of the support rod along the axial direction of the cable drum.

[0017] The embodiment of the utility model further provides a crawler frame, the crawler frame comprising a lower cover plate, the bottom side of the lower cover plate is welded with the above-mentioned towing cable support structure.

[0018] The embodiment of the utility model further provides an electric towed excavator, comprising the crawler frame as described above.

[0019] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0020] The cable support structure of this embodiment cancels the box-type structure and adopts the structure of the bottom support frame and the support frame. The cable drum is passed through the support frame to support the wire. The support frame is installed on the bottom side of the lower cover plate through the fixing part. Therefore, the flatness requirements of the upper cover plate and the lower cover plate are reduced. Moreover, even if the fixing is performed by welding, the height between the upper cover plate and the lower cover plate will not be greatly deformed in the height direction of the box section, and the subsequent assembly process will not be affected. The structural mode of the bottom support frame and the upper support frame is simpler and lighter than the box-type structure.

[0021] Additional advantages of the present invention will be given in the following description, and some will become apparent from the following description or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0023] Figure 1 It is a stereoscopic diagram of a conventional support structure installed on a crawler frame in the prior art;

[0024] Figure 2 It is a bottom view of a conventional support structure installed on a crawler frame in the prior art;

[0025] Figure 3 It is a bottom view of a conventional support structure in the prior art;

[0026] Figure 4 It is a side view of a conventional support structure in the prior art;

[0027] Figure 5 It is a three-dimensional diagram of the support structure provided by the embodiment of the utility model installed on the crawler frame;

[0028] Figure 6 It is a bottom view of the support structure provided by the embodiment of the utility model installed on the crawler frame;

[0029] Figure 7 It is a bottom view of the support structure provided by the embodiment of the utility model;

[0030] Figure 8 It is a side view of the support structure provided by the embodiment of the utility model;

[0031] Fig. 9 This is a front view of the support structure provided by the embodiment of the utility model;

[0032] Fig.10 It is a top view of the support frame and the supporting frame provided by the embodiment of the utility model;

[0033] Fig.11 This is a front view of the support frame and the supporting frame provided by the embodiment of the utility model;

[0034] Fig.12 It is a side view of a support frame and a support frame provided by an embodiment of the utility model;

[0035] In the figure: 1, crawler frame; 11, upper cover plate; 12, lower cover plate; 2, box structure; 21, vertical plate; 3, cable drum; 4, supporting frame; 41, fixing part; 42, connecting part; 5, supporting frame; 51, supporting ring; 52, supporting rod;

[0036] In order to show the positions of various parts, the distances or sizes between them are exaggerated and the schematic diagram is for reference only. DETAILED DESCRIPTION

[0037] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0038] Glossary:

[0039] Crawler frame: also known as X-frame, the main structural part of the chassis, connecting the four wheels and one belt of the walking part, stably supporting the vehicle body and realizing the walking of the machine.

[0040] As described in the background technology, the existing support structure has high requirements on the flatness of the upper cover plate 11 and the lower cover plate 12 of the crawler frame 1, the box cross-section height is greatly deformed after welding, and the box structure 2 is relatively heavy. In order to solve the above technical problems, the utility model proposes a new towing cable support structure.

[0041] like Figure 5 , Figure 6 As shown, in one embodiment of the utility model, a towing cable support structure is proposed, which is installed at the rear of the crawler frame 1 of the excavator. The support structure includes a support frame 4, a support frame 5 and a cable drum 3. Figure 7 , Figure 8 , Fig. 9 As shown;

[0042] The support frame 4 is arranged at the lower side of the crawler frame 1, and the support frame 4 includes a fixing portion 41 and a connecting portion 42. Fig.10As shown, the two ends of the connecting portion 42 are respectively connected to the first end of the fixing portion 41, and the second end of the fixing portion 41 is fixed to the bottom side of the lower cover plate 12 of the crawler frame 1; the support frame 5 includes a support ring 51 and a support rod 52, as shown in FIG. Fig.11 As shown, the support rods 52 are located on both sides of the support ring 51 , and the support rods 52 are fixed on the support bracket 4 , and the cable reel 3 is inserted into the support ring 51 of the support bracket 5 .

[0043] The cable support structure of this embodiment cancels the box structure 2, adopts the structure of the bottom support bracket 4 and the support bracket 5, passes the cable drum 3 through the support bracket 5, and then supports the wires. The support bracket 4 is installed on the bottom side of the lower cover plate 12 through the fixing part 41, thereby reducing the flatness requirements of the upper cover plate 11 and the lower cover plate 12. Moreover, even if welding is used for fixing, the height between the upper cover plate 11 and the lower cover plate 12 will not be greatly deformed in the height direction of the box section, and will not affect the subsequent assembly process. The structural mode of the bottom support bracket 4 and the upper support bracket 5 is simpler and lighter than the box structure 2.

[0044] like Figure 6 , Figure 8 As shown, the support frame 4 is a plate-like structure, the fixing portion 41 is a fixing plate, the fixing plate is fitted with the bottom side of the lower cover plate 12 of the crawler frame 1 to facilitate connection with the lower cover plate 12 and ensure the connection strength, and the connecting portion 42 is a connecting plate, the connecting plate is parallel and coplanar with the fixing plate. The fixing plate and the connecting plate are an integrated structure, which can be formed by welding three long strips of plates, or directly formed by cutting plates. Of course, it is understandable that three separate plates can also be connected by screws.

[0045] like Fig.10 As shown, the fixing plate and the connecting plate form a U-shaped support bracket 4 structure, and the U-shaped support bracket 4 has an open end, such as Fig.10 The upper end of the middle support bracket 4 and the open end of the support bracket 4 are connected to the bottom side of the crawler frame 1, as shown in FIG. Figure 6 In this embodiment, the fixing plate of the support frame 4 is connected to the lower cover plate 12 of the crawler frame 1 by welding, which ensures the connection strength between the support frame 4 and the lower cover plate 12, ensures the support for the wires, and makes the crawler frame 1 more integrated.

[0046] like Figure 8 , Fig.10 As shown, there are at least two support frames 5, all of which are arranged along the axial direction of the cable drum 3 and are fixed at multiple positions of the cable drum 3 to effectively support the cable drum 3. The support rings 51 of all the support frames 5 are coaxially arranged so that the cable drum 3 can be smoothly inserted into all the support rings 51 for easy installation.

[0047] In this embodiment, two support frames 5 are provided. Fig.10 As shown, two ends of one support frame 5 are respectively fixed to two fixing parts 41, i.e., the upper support frame 5; two ends of another support frame 5 are respectively fixed to two ends of the connecting part 42, i.e., the lower support frame 5. If multiple support frames 5 are provided, they can be arranged in sequence along the axial direction of the cable drum 3 on the fixing parts 41 on both sides.

[0048] like Fig.11 As shown, the support ring 51 includes an upper closing plate and a lower closing plate, the two ends of the lower closing plate are fixed on the support rods 52 on both sides, the cable drum 3 is installed on the lower closing plate, and the lower closing plate is crimped on the upper closing plate. The support ring 51 and the cable drum 3 can be connected by welding to improve the connection strength between the two. The upper closing plate and the lower closing plate can also be connected by screws for easy disassembly.

[0049] Among them, the upper and lower joints and the support rod 52 are all bent parts. Fig.12 As shown, the width of the support ring 51 is greater than the width of the support rod 52, that is, the axial length of the support ring 51 along the cable drum 3 is greater than the axial length of the support rod 52 along the cable drum 3, which reduces the structural weight while ensuring a stable connection effect.

[0050] The cable drum 3 is lengthened, the inner end of the cable drum 3 is inserted into the track frame 1, and welded to the cylinder in the track frame 1. The support frame 4, the support frame 5 and the cable drum 3 cooperate to bear the drag force brought by the cable while reducing the weight.

[0051] Based on the above-mentioned cable bracket structure, an embodiment of the utility model further provides a crawler frame 1 and an electric towed excavator, in which the cable bracket structure described in the above-mentioned embodiment is provided. Since the above-mentioned cable bracket structure has the above-mentioned technical effects, the technical effects of the crawler frame 1 and the electric towed excavator adopting the cable bracket structure please refer to the above-mentioned embodiment.

[0052] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it is not intended to limit the protection scope of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the protection scope of the utility model.

Claims

1. A towing cable support structure, installed at the rear of the crawler frame of an excavator, characterized in that: The support structure includes: a supporting frame, a support frame and a cable bobbin; The support bracket is arranged at the lower side of the crawler frame, and the support bracket comprises a fixing portion and a connecting portion, two ends of the connecting portion are respectively connected to the first end of the fixing portion, and the second end of the fixing portion is fixed to the bottom side of the lower cover plate of the crawler frame; The support frame comprises a support ring and a support rod, wherein the support rod is located at two sides of the support ring and is fixed on the support bracket, and the cable reel is inserted into the support ring of the support frame.

2. The towing cable support structure according to claim 1, characterized in that: The support frame is a plate-shaped structure, the fixing portion is a fixing plate, the fixing plate is fitted with the bottom side of the lower cover plate of the crawler frame, and the connecting portion is a connecting plate, the connecting plate is parallel to and coplanar with the fixing plate.

3. The towing cable support structure according to claim 2, characterized in that: The fixing plate and the connecting plate are an integrated structure, and the fixing plate and the connecting plate form a U-shaped supporting frame structure, and the open end of the supporting frame is connected to the bottom side of the crawler frame.

4. The towing cable support structure according to claim 2, characterized in that: The fixing plate of the support frame is connected to the lower cover plate of the crawler frame by welding.

5. The towing cable support structure according to claim 1, characterized in that: There are at least two support frames, all of which are arranged along the axial direction of the cable drum, and the support rings of all of the support frames are coaxially arranged.

6. The towing cable support structure according to claim 5, characterized in that: Two support frames are provided, wherein two ends of one support frame are respectively fixed on two fixing parts, and two ends of the other support frame are respectively fixed on two ends of the connecting part.

7. The towing cable support structure according to claim 1, characterized in that: The support ring comprises an upper closing plate and a lower closing plate, two ends of the lower closing plate are fixed on support rods on both sides, the cable bobbin is mounted on the lower closing plate, and the lower closing plate is pressed onto the upper closing plate.

8. The towing cable support structure according to claim 1, characterized in that: The length of the support ring along the axial direction of the cable drum is greater than the length of the support rod along the axial direction of the cable drum.

9. A crawler frame, characterized in that: The crawler frame comprises a lower cover plate, and the bottom side of the lower cover plate is welded with the towing cable support structure according to any one of claims 1-8.

10. A towed electric excavator, characterized in that: Comprising the crawler frame as claimed in claim 9.

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