Accelerator adjusting structure for excavator and excavator

Abstract

The utility model provides an accelerator adjusting structure for an excavator and the excavator, the accelerator adjusting structure comprises a fixing support used for being fixed on an upper frame of the excavator, and the fixing support is provided with a pin shaft and a fixing part used for fixing a cable sheath of an accelerator cable; the adjusting arm frame comprises an adjusting rod and a connecting part, a pin shaft hole is formed in the connecting part, the pin shaft is located in the pin shaft hole, the adjusting arm frame can rotate around the pin shaft, and a lug plate used for fixing a cable core of the cable accelerator is arranged on the connecting part; and the shaft end locking component is connected with the pin shaft, and the shaft end locking component is used for axially positioning the adjusting arm support. The service life of the accelerator adjusting structure can be prolonged, and the cost can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to heavy machinery technical field especially, a kind of throttle adjusting structure and excavator for excavator. BACKGROUND

[0002] Excavator is a kind of heavy engineering machinery, is widely used in earthwork engineering, mining, municipal engineering and other fields.With the development of science and technology, excavator technology is constantly innovated and progresses, improves work efficiency and safety.

[0003] The existing excavator, especially the power of micro excavator mainly comes from engine, and in the working process, the power of engine needs to be adjusted according to different working conditions, and adjusting the power of engine is actually adjusting the speed of engine, that is, adjusting the oil injection amount of engine;Therefore, excavator needs a structure to control the size of engine throttle to meet its working needs.

[0004] At present, the throttle adjusting structure of excavator realizes the adjustment of throttle size by rotating adjusting arm frame, but adjusting arm frame and fixed frame are connected by the form of wheel tooth engagement, the throttle adjusting structure can realize the adjustment of throttle size, but there are technical problems of easy damage and high cost in structure. Therefore, how to improve the service life of throttle adjusting structure and reduce cost is an urgent technical problem to be solved. INVENTION CONTENTS

[0005] Therefore, the utility model embodiment provides a kind of throttle adjusting structure and excavator for excavator to eliminate or improve one or more defects in prior art.

[0006] One aspect of the utility model provides a kind of throttle adjusting structure for excavator, the throttle adjusting structure includes:

[0007] Fixed support for fixing on the upper frame of excavator, the fixed support has pin shaft and the fixed part for fixing the wire skin of throttle pull wire on it;

[0008] Adjusting arm frame, including adjusting rod and connecting portion, the connecting portion has pin shaft hole on it, the pin shaft is located in the pin shaft hole, and the adjusting arm frame can rotate around the pin shaft, the connecting portion has lug for fixing the core of throttle pull wire on it;

[0009] Shaft end locking component is connected with the pin shaft, and the shaft end locking component is used for the axial positioning of the adjusting arm frame.

[0010] In some embodiments of the utility model, the fixed support includes horizontal support plate and vertical support plate, the bottom of vertical support plate is connected with horizontal support plate, the pin shaft is located on one side of vertical support plate, and one end of pin shaft is connected with vertical support plate.

[0011] In some embodiments of the utility model, the throttle adjusting structure includes first gasket, the first gasket is sleeved on the pin shaft, and the first gasket is located between the vertical support plate and the connecting part.

[0012] In some embodiments of the utility model, the throttle adjusting structure includes butterfly gasket, the butterfly gasket is sleeved on the pin shaft, and the butterfly gasket is located between the connecting part and the shaft end locking part.

[0013] In some embodiments of the utility model, the number of butterfly gaskets is two, and the concave surface of the first butterfly gasket is in contact with the convex surface of the second butterfly gasket.

[0014] In some embodiments of the utility model, the throttle adjusting structure includes second gasket, the second gasket is sleeved on the pin shaft, and the second gasket is located between the butterfly gasket and the shaft end locking part.

[0015] In some embodiments of the utility model, the shaft end locking part is shaft end locking nut.

[0016] In some embodiments of the utility model, the included angle between the lug plate and the adjusting rod is greater than 0 degrees.

[0017] In some embodiments of the utility model, the lug plate and the adjusting rod are perpendicular to each other.

[0018] According to another aspect of the utility model, a kind of excavator is also disclosed, and the excavator includes the throttle adjusting structure for excavator as any one of the above embodiments.

[0019] The throttle adjusting structure for excavator disclosed in the above embodiment has fixing part for fixing wire skin on fixed support, lug plate for fixing wire core on adjusting arm support, and adjusting arm support and fixed support are connected by pin shaft to realize hinged connection, so that when rotating adjusting arm support, the size of throttle can be adjusted by pulling wire core.This throttle adjusting structure is convenient to install, and the structure is simple;And adjusting arm support and fixed support are connected by hinged connection mode, which reduces the failure rate of throttle adjusting structure, improves the service life of throttle adjusting structure, and reduces cost.

[0020] The additional advantages, objects, and features of the present application will be apparent from the following description, and it is to be understood that both the foregoing description and the appended claims are exemplary and intended to be given the broadest possible interpretation within the scope of the present application.

[0021] Those skilled in the art will appreciate that the objects and advantages of the application can not be limited to the specifically described above and that the above and other objects of the application will become more apparent from the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the principles of the application. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. For purposes of clarity and the convenience of illustrating some portions of the application, corresponding portions from different drawings can be shown magnified, i.e., larger in size, than the other components depending on the exemplary device actually made in accordance with the application. In the drawings:

[0023] Figure 1 Structure diagram of the throttle adjusting structure for excavator of an embodiment of the present application.

[0024] Figure 2 Structure diagram of the fixed support of an embodiment of the present application. Figure 1 Front view of the throttle adjusting structure shown in the figure.

[0025] Figure 3 Structure diagram of the fixed support of an embodiment of the present application. Figure 1 Exploded schematic view of the throttle adjusting structure shown in the figure.

[0026] Figure 4 Structure diagram of the fixed support of an embodiment of the present application.

[0027] Figure 5 Structure diagram of the fixed support of an embodiment of the present application. Figure 4 Front view of the fixed support shown in the figure.

[0028] Figure 6 Structure diagram of the fixed support of an embodiment of the present application.

[0029] Figure 7 Structure diagram of the fixed support of an embodiment of the present application. Figure 6 Front view of the fixed support shown in the figure.

[0030] Figure 8 Structure diagram of the fixed support of an embodiment of the present application.

[0031] REFERENCE NUMERALS:

[0032] Horizontal support plate 110 vertical support plate 120 fixing portion 111 pin shaft 121 adjusting lever 210 handle 211 connecting portion 220 ear plate 230 first gasket 400 first butterfly gasket 510 second butterfly gasket 520 second gasket 600 shaft end locking component 300 DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the embodiments and drawings. Herein, the illustrative embodiments of the present application and the description thereof are used to explain the present application, but not as a limitation of the present application.

[0034] Herein, it also needs to be explained that, in order to avoid the present application being obscured by unnecessary details, only the structures and / or processing steps closely related to the scheme according to the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0035] It should be emphasized that the term "comprise / comprising" as used herein means the presence of a stated feature, element, step or component, but does not preclude the presence or addition of one or more other features, elements, steps or components.

[0036] Herein, it also needs to be explained that the directional terms such as "left end", "right end" and the like appearing in the content of the present specification are relative to the position direction shown in the drawings; if not specially stated, the term "connection" as used herein can not only mean direct connection, but also mean indirect connection with the presence of an intermediate. Direct connection is the connection between two parts without the aid of intermediate parts, and indirect connection is the connection between two parts with the aid of other parts.

[0037] Hereinafter, the embodiments of the present application will be described with reference to the drawings. In the drawings, the same reference numerals represent the same or similar parts.

[0038] Figure 1 The structural schematic diagram of the oil throttle adjusting structure for excavator of an embodiment of the present application is shown as follows, Figure 1 The oil throttle adjusting structure for excavator comprises a fixing support, an adjusting arm support and a shaft end locking component.

[0039] The fixed support is used for being fixed on the upper frame of the excavator, and the fixed support is provided with a pin shaft 121 and a fixing portion 111 for fixing the wire sheath of the throttle pull cable; the adjusting arm support comprises an adjusting rod 210 and a connecting portion 220, the connecting portion 220 is provided with a pin shaft hole, the pin shaft 121 is located in the pin shaft hole, and the adjusting arm support is rotatable around the pin shaft 121, and the connecting portion 220 is provided with an ear plate 230 for fixing the wire core of the throttle pull cable; and the shaft end locking component 300 is connected with the pin shaft 121, and the shaft end locking component 300 is used for axially positioning the adjusting arm support.

[0040] As shown in Figure 2 , the adjusting arm support is arranged at a position close to the top end face of the fixed support, and the adjusting arm support is hingedly connected with the fixed support through the pin shaft 121, so that when the size of the throttle is adjusted, the adjusting rod 210 of the adjusting arm support is held by hand, and the adjusting rod 210 is rotated, so that the adjusting arm support is relatively rotated relative to the fixed support. In this embodiment, the throttle pull cable comprises a wire sheath and a wire core, and when the adjusting arm support is rotated, the wire sheath is stationary, and the wire core is extended or retracted along with the rotation of the adjusting arm support, that is, the adjustment of the fuel injection amount of the engine is realized. As shown in Figure 2 , in the throttle adjusting structure, when the driver pulls the adjusting rod 210 of the adjusting arm support to the left, the adjusting rod 210 drives the connecting portion 220 of the adjusting arm support to rotate counterclockwise around the pin shaft 121 of the fixed support, at this time, the ear plate 230 of the adjusting arm support pulls the wire core of the throttle pull cable to extend outward, thereby increasing the throttle of the engine and improving the rotating speed of the engine; and when the driver pulls the adjusting rod 210 of the adjusting arm support to the right, the adjusting rod 210 drives the connecting portion 220 of the adjusting arm support to rotate clockwise around the pin shaft 121 of the fixed support, at this time, the ear plate 230 of the adjusting arm support pushes the wire core of the throttle pull cable to retract inward, thereby reducing the throttle of the engine and reducing the rotating speed of the engine.

[0041] In the above embodiment, the connecting portion 220 of the adjusting arm support is in a sleeve structure, the central shaft hole of the sleeve is a pin shaft hole, when the adjusting arm support and the fixed support are in the connected state, one end of the sleeve-shaped connecting portion 220 is axially positioned by the shaft end locking component 300, so as to prevent the adjusting arm support from axially moving when rotating.

[0042] In some embodiments of the present application, the fixed support comprises a horizontal support plate 110 and a vertical support plate 120, the bottom end of the vertical support plate 120 is connected with the horizontal support plate 110, the pin shaft 121 is located on one side of the vertical support plate 120, and one end of the pin shaft 121 is connected with the vertical support plate 120. As shown in Figure 4 and Figure 5As shown, the pin shaft 121 and the horizontal support plate 110 are located on one side of the vertical support plate 120, and the pin shaft 121 is located at the top end of the vertical support plate 120, and the horizontal support plate 110 is located at the bottom end of the vertical support plate 120, and the fixing part 111 of the wire skin of the throttle pull wire can be located on the horizontal support plate 110, for example. Figure 4 As shown, the fixing part 111 is a U-shaped groove at the end of the horizontal support plate 110. Further, the horizontal support plate 110 and the vertical support plate 120 can be an integral structure or a split structure. When it is an integral structure, the fixing bracket can be formed by bending the horizontal support plate and the vertical support plate; when it is a split structure, the horizontal support plate 110 and the vertical support plate 120 can be connected by welding. Similarly, the pin shaft 121 and the vertical support plate 120 can also be connected by welding.

[0043] In other embodiments, the throttle adjusting structure includes a first gasket 400, which is sleeved on the pin shaft 121, and the first gasket 400 is located between the vertical support plate 120 and the connecting part 220. When the connecting part 220 is a sleeve structure, referring to Figure 3 , the first gasket 400 can be located between the vertical support plate 120 and the sleeve, and the two end faces of the first gasket 400 abut against the vertical support plate 120 and the connecting part 220 respectively, so that when the adjusting arm bracket rotates relative to the fixing bracket, the first gasket 400 can reduce the friction between the connecting part 220 and the vertical support plate 120. Further, the first gasket 400 can be a flat gasket, and its structural schematic diagram is shown in Figure 8 .

[0044] In some embodiments of the present application, the throttle adjusting structure includes a butterfly gasket, which is sleeved on the pin shaft 121, and the butterfly gasket is located between the connecting part 220 and the shaft end locking part. Referring to Figure 3 , the butterfly gasket is located at the right end of the connecting part 220 of the adjusting arm bracket, and the butterfly gasket is located between the adjusting arm bracket and the shaft end locking part 300. When the adjusting arm bracket is rotated, the right end face of the connecting part 220 of the adjusting arm bracket and the butterfly gasket have a certain friction.

[0045] Exemplarily, the number of the butterfly washers is two, i.e. the butterfly washers include a first butterfly washer 510 and a second butterfly washer 520, the concave surface of the first butterfly washer 510 is in contact with the convex surface of the second butterfly washer 520. In this embodiment, both of the two butterfly washers are sleeved on the pin shaft 121, and both of the two butterfly washers are located between the connecting part 220 and the shaft end locking part 300. Specifically, each butterfly washer includes a concave surface and a convex surface, the concave surface is a surface with a toothed structure, and the convex surface is a surface without a toothed structure; the arrangement mode of the butterfly washers in this embodiment not only can prevent the fixed part 111 from being abraded, but also can further ensure that the adjusting arm frame remains stationary under the action of static friction, thereby improving the working stability of the excavator.

[0046] Further, the accelerator adjusting structure can further include a second washer 600, the second washer 600 is sleeved on the pin shaft 121, and the second washer 600 is located between the butterfly washer and the shaft end locking part 300. The second washer 600 is similar to the first washer 400, and can also be a flat washer. The second washer 600 is arranged at the end of the butterfly washer away from the fixed part 111, i.e. when the adjusting arm frame is rotated, the second washer 600 can avoid friction between the butterfly washer and the shaft end locking part 300. Exemplarily, the shaft end locking part 300 can be a shaft end locking nut, i.e. the shaft end locking nut is in threaded connection with the pin shaft 121 to realize axial positioning of the adjusting arm frame; in this embodiment, the shaft end locking nut can not only realize axial positioning of the adjusting arm frame, but also can adjust the pre-tightening force of the shaft end locking nut, i.e. adjust the pre-friction force between the connecting part 220 and each component. It can be understood that, in this embodiment, the shaft end locking nut is taken as the shaft end locking part 300 only as an example, and in other embodiments, the shaft end locking part 300 can also be other components in addition to the shaft end locking nut.

[0047] Figure 6 For the structural schematic diagram of the adjusting arm frame of an embodiment of the utility model, as shown in the figure, Figure 6 The connecting part 220, the ear plate 230 and the adjusting rod 210 of the adjusting arm frame are in an integrated structure, the connecting part 220 is in a sleeve structure, and the adjusting rod 210 and the ear plate 230 are both connected with the side wall of the sleeve. In this embodiment, the ear plate 230 and the adjusting rod 210 have an included angle therebetween, and the included angle between the ear plate and the adjusting rod is greater than 0 degrees, the axis of the adjusting rod 210 and the ear plate 230 are both perpendicular to the axis of the connecting part 220; in addition, the top end of the adjusting rod 210 is also provided with a handle 211, and the handle 211 and the end part of the adjusting rod 210 are connected through threads or the like.

[0048] Optionally, the ear plate 230 and the adjusting rod 210 are perpendicular to each other. As shown in the figure, Figure 7As shown, the included angle between the lug 230 and the adjusting rod 210 can be 90 degrees. It can be understood that the structure of the lug 230 and the adjusting rod 210 being perpendicular to each other in this embodiment is only some examples, and in other embodiments, the included angle between the lug 230 and the adjusting rod 210 can also be an acute angle, etc.

[0049] In the assembly of the throttle adjusting structure, the first gasket 400 can be sleeved on the pin shaft 121 first, so that the end face of the first gasket 400 abuts against the limiting plate face on the vertical support plate 120, then the sleeve connecting part 220 of the adjusting arm support is sleeved on the pin shaft 121, and then the butterfly gasket and the second gasket 600 are sequentially installed on the pin shaft 121, and finally the shaft end locking nut is screwed on. In addition, after the shaft end locking nut is tightened, the adjusting rod 210 of the adjusting arm support is appropriately rotated, and when the relative friction force between the components reaches the preset requirement, the adjusting arm support can be used; the preset requirement can be understood as when the adjusting rod 210 is pulled to rotate a certain angle and then stopped, the adjusting arm support can be fixed relative to the support under the action of static friction.

[0050] In the above embodiment, the wire skin of the throttle pull wire is fixed on the fixed part 111 of the fixed support, and the wire core of the throttle pull wire is fixed on the lug 230 of the adjusting arm support, so that when the adjusting arm support is rotated, the lug 230 of the adjusting arm support also rotates synchronously with the adjusting arm support, at this time the lug 230 drives the wire core of the throttle pull wire to extend or retract, thereby realizing the control of the throttle size.

[0051] It can be found from the above embodiment that the throttle adjusting structure for the excavator has the fixed part 111 for fixing the wire skin on the fixed support, and the lug 230 for fixing the wire core on the adjusting arm support, and the adjusting arm support and the fixed support are hingedly connected through the pin shaft 121, so that when the adjusting arm support is rotated, the wire core is pulled to adjust the size of the throttle. The throttle adjusting structure is convenient to assemble, simple in structure, and the adjusting arm support and the fixed support are connected in a hinged manner, which reduces the failure rate of the throttle adjusting structure, prolongs the service life of the throttle adjusting structure, and reduces the cost. Specifically, the cost of the throttle adjusting structure is reduced by about 30% compared with the existing throttle adjusting structure. Moreover, the throttle adjusting structure is convenient to manufacture, compact in structure, and high in practicability.

[0052] Correspondingly, the utility model also provides a kind of excavator, and the excavator includes the throttle adjusting structure for the excavator as any one of the above embodiments.

[0053] In the utility model, the features described and / or exemplified for one embodiment can be used in the same way or in an analogous way in one or more other embodiments, and / or in combination with or instead of features of other embodiments.

[0054] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the embodiments of the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A throttle adjusting structure for a shovel, characterized by, The accelerator adjusting structure comprises: a fixing support for being fixed on a superstructure of the excavator, the fixing support being provided with a pin shaft and a fixing part for fixing a wire sheath of an accelerator pull cable; an adjusting arm support comprising an adjusting rod and a connecting part, the connecting part being provided with a pin shaft hole, the pin shaft being located in the pin shaft hole and the adjusting arm support being rotatable around the pin shaft, the connecting part being provided with an ear plate for fixing a wire core of the accelerator pull cable; an axial end locking part connected with the pin shaft, the axial end locking part being used for axially positioning the adjusting arm support.

2. The throttle adjusting structure for the excavator according to claim 1, characterized by, The fixing support comprises a horizontal support plate and a vertical support plate, a bottom end of the vertical support plate being connected with the horizontal support plate, the pin shaft being located at one side of the vertical support plate and one end of the pin shaft being connected with the vertical support plate.

3. The throttle adjusting structure for the excavator according to claim 2, characterized by, The accelerator adjusting structure comprises a first gasket, the first gasket being sleeved on the pin shaft and located between the vertical support plate and the connecting part.

4. The throttle adjusting structure for the excavator according to claim 3, characterized by, The accelerator adjusting structure comprises a butterfly gasket, the butterfly gasket being sleeved on the pin shaft and located between the connecting part and the axial end locking part.

5. The throttle adjusting structure for the excavator according to claim 4, characterized by, The number of the butterfly gaskets is two, and a concave surface of a first butterfly gasket is in contact with a convex surface of a second butterfly gasket.

6. The throttle adjusting structure for the excavator according to claim 5, characterized by, The accelerator adjusting structure comprises a second gasket, the second gasket being sleeved on the pin shaft and located between the butterfly gaskets and the axial end locking part.

7. The throttle adjusting structure for the excavator according to any one of claims 1 to 6, characterized in that, The axial end locking part is an axial end locking nut.

8. The throttle adjusting structure for the excavator according to claim 1, characterized by, An included angle between the ear plate and the adjusting rod is greater than 0 degree.

9. The throttle adjusting structure for the excavator according to claim 8, characterized by, The ear plate and the adjusting rod are perpendicular to each other.

10. An excavator characterized by comprising: The excavator comprises the accelerator adjusting structure for the excavator as claimed in any one of claims 1 to 9.

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