Front shovel of excavator and excavator

Abstract

The utility model provides an excavator front shovel and an excavator, the excavator front shovel comprises a main shovel, the main shovel comprises a main shovel body, an oil cylinder lug plate, a lower vehicle frame connecting part and an auxiliary shovel connecting part, the oil cylinder lug plate, the lower vehicle frame connecting part and the auxiliary shovel connecting part are all arranged on the main shovel body, the oil cylinder lug plate and the lower vehicle frame connecting part are both located on the side, close to the lower vehicle frame, of the main shovel body. The auxiliary shovel is arranged at the end part of the main shovel, the auxiliary shovel comprises an auxiliary shovel body and a hinging part, the hinging part is arranged on the auxiliary shovel body, and the hinging part is hinged with the auxiliary shovel connecting part, so that the auxiliary shovel can rotate relative to the main shovel. The supporting stability and the working efficiency of the front shovel are improved.

Description

Technical Field

[0001] This utility model relates to the field of heavy machinery equipment technology, and in particular to an excavator front shovel and an excavator. Background Technology

[0002] The front shovel of an excavator, also known as a bulldozer blade, is an adjustable device at the front of a mini excavator, mainly used for bulldozing, loading materials, and slope trimming. By controlling the extension and retraction of the bulldozer blade's cylinder, the height of the front edge off the ground can be adjusted to adapt to different working conditions. During the excavation process, the front shovel can intercept remaining materials and work with the bucket to remove them, improving work efficiency. In addition, by adjusting the height of the front shovel, the center of gravity distribution can be changed, enhancing the stability of lifting operations. Furthermore, when the excavator is working on a slope, the front shovel can prevent the machine from tipping over.

[0003] Currently, the front shovel structure of mini excavators is generally as shown in the attached figure. Figure 1 As shown, the front shovel is connected to the excavator's underframe via a pin. One end of the front shovel cylinder is fixed to the cylinder mounting plate on the underframe, and the other end is fixed to the cylinder mounting plate in the middle of the front shovel. The extension and retraction of the front shovel cylinder drives the lifting and lowering movement of the front shovel. Since the front shovel is used for stabilizing the excavator and for bulldozing, a wider front shovel results in higher stability and work efficiency. However, considering the overall maneuverability of the excavator, the width of the front shovel needs to be designed to match the width of the machine body. Therefore, while the existing front shovel can stabilize the excavator and complete bulldozing operations, its support stability and work efficiency are not ideal. Thus, improving the support stability and work efficiency of the front shovel is a pressing technical problem that needs to be solved. Utility Model Content

[0004] In view of this, the present invention provides a front shovel and an excavator to eliminate or improve one or more defects existing in the prior art.

[0005] One aspect of this utility model provides a front shovel for an excavator, the front shovel comprising:

[0006] The main shovel includes a main shovel body, a cylinder lug plate, a lower frame connecting part, and a secondary shovel connecting part. The cylinder lug plate, the lower frame connecting part, and the secondary shovel connecting part are all disposed on the main shovel body, and the cylinder lug plate and the lower frame connecting part are all located on the side of the main shovel body closer to the lower frame.

[0007] A secondary shovel is disposed at the end of the main shovel. The secondary shovel includes a secondary shovel body and a hinge portion. The hinge portion is disposed on the secondary shovel body and is hingedly connected to the secondary shovel connecting portion, so that the secondary shovel is rotatable relative to the main shovel.

[0008] In some embodiments of this utility model, the secondary shovel includes a left secondary shovel and a right secondary shovel, which are symmetrically arranged at both ends of the main shovel.

[0009] In some embodiments of this utility model, the cylinder lug is located in the middle of the main shovel body, the lower frame connecting part includes a left connecting part and a right connecting part, the left connecting part and the right connecting part are respectively located on both sides of the cylinder lug, and the auxiliary shovel connecting part includes a left auxiliary shovel connecting part and a right auxiliary shovel connecting part, the left auxiliary shovel connecting part and the right auxiliary shovel connecting part are respectively located on the outside of the left connecting part and the right connecting part.

[0010] In some embodiments of this utility model, the auxiliary shovel connecting part is located on the side of the main shovel body near the lower frame, the auxiliary shovel connecting part has a first shaft hole, the hinge part is located on one side of the auxiliary shovel body, and the hinge part has a second shaft hole, the first shaft hole and the second shaft hole are hinged together by a connecting pin.

[0011] In some embodiments of this utility model, a third shaft hole is provided on both sides of the first shaft hole, and a fourth shaft hole is provided on one side of the second shaft hole. When the auxiliary shovel is in the extended state and the retracted state, the fourth shaft hole is connected to the two third shaft holes on both sides of the first shaft hole by a positioning pin.

[0012] In some embodiments of this utility model, the top of the positioning pin has a lifting ring.

[0013] In some embodiments of this utility model, the hinge portion includes two parallel and spaced-apart connecting lugs, which are respectively located on the upper and lower sides of the auxiliary shovel connecting portion.

[0014] In some embodiments of this utility model, the end of the connecting ear plate near the main shovel body is located on the outside of the auxiliary shovel body.

[0015] In some embodiments of this utility model, both the second shaft hole and the fourth shaft hole are located on the outside of the auxiliary shovel body, and the fourth shaft hole is located on the outside of the second shaft hole.

[0016] According to another aspect of the present invention, an excavator is also disclosed, the excavator including the excavator front shovel as described in any of the above embodiments.

[0017] The excavator front shovel disclosed in the above embodiments of this utility model includes a main shovel and a secondary shovel. The main shovel is connected to the cylinder rod end of the front shovel cylinder through a cylinder lug plate and to the excavator's underframe through a lower frame connecting part. The secondary shovel is disposed at the end of the main shovel, and the hinged part of the secondary shovel is hinged to the secondary shovel connecting part on the main shovel, so that the secondary shovel can rotate relative to the main shovel. The secondary shovel in this front shovel can be extended or retracted by rotation. When extended, it widens the width of the main shovel, and when retracted, it ensures that the width of the front shovel is consistent with that of the excavator body. Therefore, the front shovel of this application can not only ensure the excavator's passability, but also improve the support stability and working efficiency of the front shovel by widening the width of the main shovel.

[0018] Additional advantages, objects, and features of this invention will be set forth in part in the description which follows, and will in part become apparent to those skilled in the art upon review of the description, or may be learned by practice of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0019] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute a limitation thereof. The components in the drawings are not drawn to scale but are merely for illustrating the principles of the present invention. For ease of illustration and description of certain parts of the present invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a front shovel for an excavator using existing technology.

[0022] Figure 2 This is a schematic diagram of the structure of an excavator front shovel in the deployed state, according to an embodiment of this application.

[0023] Figure 3 for Figure 2 The image shows a front view of the excavator's front shovel.

[0024] Figure 4 for Figure 2 The diagram shows the exploded structure of the excavator's front shovel.

[0025] Figure 5 This is a schematic diagram of the structure of an excavator front shovel in the retracted state, according to an embodiment of this application.

[0026] Figure 6 This is a schematic diagram of the structure of a secondary shovel according to an embodiment of this application.

[0027] Figure 7 This is a schematic diagram of the connecting pin of the front shovel of an excavator according to an embodiment of this application.

[0028] Figure 8 This is a schematic diagram of the positioning pin of the excavator front shovel according to an embodiment of this application.

[0029] Figure label:

[0030] Main shovel body 110, cylinder ear plate 120, lower frame connecting part 130, auxiliary shovel connecting part 140, auxiliary shovel body 210, hinge part 220, first shaft hole 141, second shaft hole 221, third shaft hole 142, fourth shaft hole 222, ear plate end 231, connecting pin 300, positioning pin 310, lifting ring 320. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0032] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0033] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0034] It should also be noted that the directional terms such as "left end" and "right end" used in this specification are relative to the positions shown in the attached drawings. Unless otherwise specified, the term "connection" in this document can refer not only to a direct connection but also to an indirect connection involving an intermediate component. A direct connection is a connection between two components without the aid of an intermediate component, while an indirect connection is a connection between two components using other components.

[0035] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts.

[0036] Figure 2 This is a schematic diagram of the structure of an excavator front shovel in its deployed state, according to an embodiment of this application. Figure 3 for Figure 2 The front view of the excavator's front shovel shown is as follows: Figure 2 and Figure 3 As shown, the excavator front shovel includes a main shovel and a secondary shovel. The main shovel includes a main shovel body 110, a cylinder lug 120, a lower frame connecting part 130, and a secondary shovel connecting part 140. The cylinder lug 120, the lower frame connecting part 130, and the secondary shovel connecting part 140 are all disposed on the main shovel body 110, and the cylinder lug 120 and the lower frame connecting part 130 are all located on the side of the main shovel body 110 closer to the lower frame. The secondary shovel is disposed at the end of the main shovel. The secondary shovel includes a secondary shovel body 210 and a hinge part 220. The hinge part 220 is disposed on the secondary shovel body 210, and the hinge part 220 is hinged to the secondary shovel connecting part 140 so that the secondary shovel can rotate relative to the main shovel.

[0037] In the above embodiments, the side of the main shovel body 110 closest to the lower frame can also be referred to as the back side of the main shovel body 110, or understood as... Figure 2 The main shovel body 110 is shown below. At this time, the cylinder ear plate 120 and the lower frame connecting part 130 are both located on the back side of the main shovel body 110. The cylinder ear plate 120 is used to connect with the end of the cylinder rod of the front shovel cylinder, and the lower frame connecting part is used to connect with the lower frame of the excavator. Since the auxiliary shovel is located at the end of the main shovel, the auxiliary shovel connecting part 140 can be specifically located at the end of the main shovel body 110 or on the side close to the lower frame. When the auxiliary shovel connecting part 140 is located on the side of the main shovel body 110 close to the lower frame, the auxiliary shovel connecting part 140, the cylinder ear plate 120 and the lower frame connecting part 130 are all located on the same side of the main shovel body 110.

[0038] Additionally, the side of the main shovel body 110 that comes into contact with the material can be referred to as the front side of the main shovel body 110. In this case, the front side of the auxiliary shovel body 210 can have the same shape as the front side of the main shovel body 110, that is, in Figure 2 When the auxiliary shovel is in the extended state, the end of the auxiliary shovel body 210 abuts against the end of the main shovel body 110, thereby widening the width of the front shovel. Compared to the unwidened front shovel, the widened front shovel improves the excavator's support stability and bulldozing efficiency. Furthermore, Figure 5 This is a schematic diagram of the structure of an excavator front shovel in the retracted state according to an embodiment of this application, as shown below. Figure 5 As shown, the retracted auxiliary shovel is located behind the main shovel, and the front shovel in this state is the same width as the excavator, thus ensuring the excavator's passability.

[0039] In one embodiment, there are two auxiliary shovels, namely a left auxiliary shovel and a right auxiliary shovel, which are symmetrically arranged at both ends of the main shovel. Figure 2 and Figure 5 As shown, when both the left and right auxiliary shovels on both sides of the main shovel are extended, the end faces of the two auxiliary shovel bodies 210 abut against the left and right end faces of the main shovel body 110, respectively. In this embodiment, the left and right ends of the main shovel body 110 are respectively provided with auxiliary shovel connecting portions 140, that is, the hinge portion 220 of the left auxiliary shovel and the hinge portion 220 of the right auxiliary shovel are respectively hinged to the two auxiliary shovel connecting portions 140 on the main shovel body 110. In this embodiment, the left and right auxiliary shovels are arranged symmetrically with respect to the center plane of symmetry of the main shovel body 110, so the two auxiliary shovel connecting portions 140 on the main shovel body 110 are also arranged symmetrically with respect to the center plane of symmetry of the main shovel body 110.

[0040] Furthermore, the cylinder lug 120 is located in the middle of the main shovel body 110, the lower frame connecting part 130 includes a left connecting part and a right connecting part, the left connecting part and the right connecting part are respectively located on both sides of the cylinder lug 120, and the auxiliary shovel connecting part 140 includes a left auxiliary shovel connecting part and a right auxiliary shovel connecting part, the left auxiliary shovel connecting part and the right auxiliary shovel connecting part are respectively located on the outer sides of the left connecting part and the right connecting part. Figure 3 As shown, the cylinder ear plate 120 is located in the center of the main shovel body 110. The left connecting part and the right connecting part are located on the left and right sides of the cylinder ear plate 120, respectively. The left auxiliary shovel connecting part is located on the left side of the left connecting part, and the right auxiliary shovel connecting part is located on the right side of the left and right connecting parts. In this embodiment, the left connecting part and the right connecting part are symmetrical with respect to the center plane of the main shovel body 110, and the left auxiliary shovel connecting part and the right auxiliary shovel connecting part are also symmetrical with respect to the center plane of the main shovel body 110.

[0041] In one embodiment, the auxiliary shovel connecting portion 140 is located on the side of the main shovel body 110 near the lower frame. The auxiliary shovel connecting portion 140 has a first shaft hole 141. The hinge portion 220 is located on one side of the auxiliary shovel body 210 and has a second shaft hole 221. The first shaft hole 141 and the second shaft hole 221 are hinged together by a connecting pin 300. Figure 2 In the illustrated embodiment, the hinge portion 220 is located on the side of the secondary shovel body 210 closer to the main frame. That is, not only is the secondary shovel connecting portion 140 located on the back side of the main shovel body 110, but the hinge portion 220 is also located on the back side of the secondary shovel body 210. The first shaft hole 141 is located on the secondary shovel connecting portion 140, and the second shaft hole 221 is located on the hinge portion 220. Thus, the secondary shovel connecting portion 140 and the hinge portion 220 are connected by a connecting pin 300, thereby achieving a hinged connection between the secondary shovel and the main shovel. A schematic diagram of the connecting pin 300 is shown below. Figure 7As shown. Specifically, in Figure 2 In the excavator front shovel shown, the auxiliary shovel rotates 180 degrees counterclockwise around the connecting pin 300 to enter the retracted state. The retracted state of the auxiliary shovel is as follows: Figure 5 As shown; while Figure 5 In the excavator front shovel shown, the auxiliary shovel rotates 180 degrees clockwise around the connecting pin 300 to enter the extended state. The extended state of the auxiliary shovel is as follows: Figure 2 As shown.

[0042] Furthermore, a third shaft hole 142 is provided on both sides of the first shaft hole 141, and a fourth shaft hole 222 is provided on one side of the second shaft hole 221. When the auxiliary shovel is in the extended state and the retracted state, the fourth shaft hole 222 is connected to the two third shaft holes 142 on both sides of the first shaft hole 141 via a positioning pin 310. In this embodiment, the positioning pin 310 is used to position the auxiliary shovel; that is, when it is necessary to stabilize the auxiliary shovel in the extended or retracted state, the positioning pin 310 can prevent the auxiliary shovel from rotating around the connecting pin 300. Figure 4 and Figure 6 As shown, in addition to the first shaft hole 141, the auxiliary shovel connecting part 140 of the main shovel is also provided with two third shaft holes 142. At this time, the two third shaft holes 142 are respectively located on the left and right sides of the first shaft hole 141. That is, when the auxiliary shovel needs to be stably in the extended state, the third shaft hole 142 on the outside of the first shaft hole 141 serves as the mounting hole for the positioning pin 310. When the auxiliary shovel needs to be stably in the retracted state, the third shaft hole 142 on the inside of the first shaft hole 141 serves as the mounting hole for the positioning pin 310. Correspondingly, in addition to the second shaft hole 221, the hinge part 220 on the auxiliary shovel is also provided with a fourth shaft hole 222. At this time, the fourth shaft hole 222 is located on one side of the second shaft hole 221, and the fourth shaft hole 222 serves as the mounting hole for the positioning pin 310.

[0043] exist Figure 2 In the structural schematic diagram of the extended state of the auxiliary shovel, the fourth shaft hole 222 on the hinge portion 220 of the auxiliary shovel is connected to the outer third shaft hole 142 on the auxiliary shovel connecting portion 140 of the main shovel via a positioning pin 310; Figure 5 In the structural diagram showing the retracted state of the auxiliary shovel, the fourth shaft hole 222 on the hinge portion 220 of the auxiliary shovel is connected to the inner third shaft hole 142 on the auxiliary shovel connecting portion 140 of the main shovel via a positioning pin 310. If the auxiliary shovel needs to be retracted... Figure 2 The state transition shown is Figure 5 In the state shown, you need to first remove the positioning pin 310, and then rotate the auxiliary shovel counterclockwise until the auxiliary shovel rotates to the position indicated. Figure 5 When the indicated state is reached, insert the positioning pin 310 into the corresponding third shaft hole 142. If the auxiliary shovel... Figure 5 The state transition shown is Figure 2The methods for the states shown are similar and will not be elaborated here.

[0044] Figure 8 This is a schematic diagram of the positioning pin 310 of an excavator front shovel according to an embodiment of this application. Figure 8 As shown, a lifting ring 320 may also be provided at the top of the positioning pin 310. Since the positioning pin 310 needs to be lifted down when rotating the auxiliary shovel, the lifting ring 320 at the top of the positioning pin 310 improves the ease of disassembly of the positioning pin.

[0045] In one specific embodiment, the hinge portion 220 on the auxiliary shovel body 210 includes two parallel and spaced-apart connecting lugs, which are respectively located on the upper and lower sides of the auxiliary shovel connecting portion 140. For example... Figure 6 As shown, both connecting ear plates are provided with a second shaft hole 221 for hinged connection with the main shovel and a fourth shaft hole 222 for positioning connection. One end of the two connecting ear plates is fixedly connected to the back side of the auxiliary shovel body 210.

[0046] Furthermore, the end 231 of the connecting ear plate near the main shovel body 110 is located on the outside of the auxiliary shovel body 210. The end 231 of the connecting ear plate near the main shovel body 110 refers to... Figure 6 The left end of the connecting ear plate is shown, and at this time the left end of the connecting ear plate is located on the left side of the left end face of the auxiliary shovel body 210.

[0047] In one embodiment, the fourth shaft hole 222 is located on the side of the second shaft hole 221 away from the end face of the ear plate. At this time, the end face of the ear plate and the fourth shaft hole 222 are located on both sides of the second shaft hole 221, so that when the auxiliary shovel is unfolded, the fourth shaft hole 222 can be connected to the third shaft hole 142 outside the first shaft hole 141 through the positioning pin 310, and when the auxiliary shovel is retracted, the fourth shaft hole 222 can be connected to the third shaft hole 142 inside the first shaft hole 141 through the positioning pin 310.

[0048] Accordingly, this utility model also provides an excavator, which includes the excavator front shovel as described in any of the above embodiments.

[0049] As can be seen from the above embodiments, the excavator front shovel disclosed in this utility model includes a main shovel and a secondary shovel. The main shovel is connected to the cylinder rod end of the front shovel cylinder through a cylinder lug plate and to the excavator's underframe through a lower frame connecting part. The secondary shovel is located at the end of the main shovel, and the hinged part of the secondary shovel is hinged to the secondary shovel connecting part on the main shovel, so that the secondary shovel can rotate relative to the main shovel. The secondary shovel in this front shovel can be extended or retracted by rotation. When extended, it widens the width of the main shovel, and when retracted, it ensures that the width of the front shovel is consistent with that of the excavator body. Therefore, the front shovel of this application can not only ensure the excavator's passability, but also improve the support stability and working efficiency of the front shovel by widening the width of the main shovel.

[0050] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0051] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An excavator shovel characterized by comprising: The excavator front shovel comprises: a main shovel comprising a main shovel body, a cylinder ear plate, a lower frame connecting part and a sub-shovel connecting part, the cylinder ear plate, the lower frame connecting part and the sub-shovel connecting part are arranged on the main shovel body, and the cylinder ear plate and the lower frame connecting part are located on the side of the main shovel body close to the lower frame; a sub-shovel arranged at the end of the main shovel, the sub-shovel comprising a sub-shovel body and a hinged part, the hinged part is arranged on the sub-shovel body, and the hinged part is hingedly connected with the sub-shovel connecting part, so that the sub-shovel is rotatable relative to the main shovel.

2. The excavator stick according to claim 1, wherein The sub-shovel comprises a left sub-shovel and a right sub-shovel, and the left sub-shovel and the right sub-shovel are symmetrically arranged at the two ends of the main shovel.

3. The excavator stick according to claim 2, wherein, The cylinder ear plate is located in the middle of the main shovel body, the lower frame connecting part comprises a left connecting part and a right connecting part, the left connecting part and the right connecting part are respectively located on the two sides of the cylinder ear plate, the sub-shovel connecting part comprises a left sub-shovel connecting part and a right sub-shovel connecting part, and the left sub-shovel connecting part and the right sub-shovel connecting part are respectively located on the outer sides of the left connecting part and the right connecting part.

4. The excavator stick according to claim 3, wherein, The sub-shovel connecting part is located on the side of the main shovel body close to the lower frame, the sub-shovel connecting part has a first shaft hole, the hinged part is located on one side of the sub-shovel body, and the hinged part has a second shaft hole, the first shaft hole and the second shaft hole are hingedly connected through a connecting pin shaft.

5. The excavator stick according to claim 4, wherein, Both sides of the first shaft hole are provided with third shaft holes, one side of the second shaft hole is provided with a fourth shaft hole, and when the sub-shovel is in the unfolded state and the retracted state, the fourth shaft hole is connected with the two third shaft holes on both sides of the first shaft hole through a positioning pin shaft.

6. The excavator shovel of claim 5, wherein, The top of the positioning pin shaft has a lifting ring.

7. The excavator stick according to claim 5, wherein, The hinged part comprises two parallel and spaced connecting ear plates, and the two connecting ear plates are respectively located on the upper and lower sides of the sub-shovel connecting part.

8. The excavator shovel of claim 7, wherein, The connecting ear plate comprises an ear plate end close to the main shovel body, and the ear plate end is located on the outer side of the sub-shovel body.

9. The excavator shovel of claim 8, wherein, The fourth shaft hole is located on the side of the second shaft hole away from the ear plate end surface.

10. An excavator characterized by comprising: The excavator comprises the excavator front shovel according to any one of claims 1 to 9.

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