CN210526695U - Chassis of travelling wheel of small excavator - Google Patents
Chassis of travelling wheel of small excavator Download PDFInfo
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- CN210526695U CN210526695U CN201920988811.5U CN201920988811U CN210526695U CN 210526695 U CN210526695 U CN 210526695U CN 201920988811 U CN201920988811 U CN 201920988811U CN 210526695 U CN210526695 U CN 210526695U
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Abstract
The utility model discloses a chassis for a walking wheel of a mini excavator, which comprises two horizontally arranged mounting frames, wherein at least two connecting crossbeams are arranged between the two mounting frames so as to enable the two mounting frames to form a complete chassis support; the side wall of the mounting frame is provided with a bottom plate, the upper side and the lower side of the bottom plate are bent towards the position of the guide sliding block to form a guide sliding groove, the guide sliding block is assembled in the guide sliding groove in a sliding mode, and rubber tracks are assembled outside the driving wheel and the tensioning wheel. The utility model discloses a dig quick-witted walking wheel chassis for a short time, this chassis structure's direction spout structural strength is big, and space dimension control is accurate, and processing is convenient.
Description
Technical Field
The utility model belongs to the technical field of the mini-excavator technique and specifically relates to a dig quick-witted walking wheel chassis for a short time.
Background
With the change of construction conditions and environments, more and more small excavators are demanded by the market. Small excavators have multiple functions, such as breaking, digging and shoveling, and corresponding mechanisms, such as a breaking hammer, a bucket, a push shovel, etc., are usually powered by a hydraulic system.
In the chassis structure of the walking wheel of the small excavator, a main driving wheel and at least one guide wheel are usually arranged, then a rubber crawler belt is sleeved outside the main driving wheel and the guide wheel, and the rubber crawler belt is driven to run through the main driving wheel during movement. The guide wheel is mainly used for tensioning and adjusting the rubber track. In the chassis structure of the traveling wheels, when adjusting the guide wheels, it is generally necessary to provide a guide rail on the chassis for the horizontal movement of the guide wheels. In addition, in order to enable the installation space of the guide wheel to meet the corresponding width requirement, a limit baffle is usually welded between the two steel plates, so that the width requirement of the installation space of the guide wheel can be adjusted.
However, the machining of the guide rail by directly welding two steel plates has the following drawbacks: 1. the strength performance of the guide rail structure is insufficient only through two welded square steel plates, and 2, the shape and the size of the guide rail formed by machining in the mode are difficult to control, the machining difficulty is increased, and the smoothness of later-stage horizontal sliding adjustment of the guide wheel can be influenced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: in order to overcome the defects of the prior art, the small excavator walking wheel chassis with the guide sliding groove is high in structural strength, accurate in space size control and convenient to machine.
The utility model adopts the technical proposal that: the chassis comprises two horizontally arranged mounting frames, at least two connecting cross beams are arranged between the two mounting frames, so that the two mounting frames form a complete chassis support, a driving wheel, a tensioning wheel and an adjusting mechanism for adjusting the position of the tensioning wheel are arranged on the mounting frames, a guide sliding block is rotatably arranged on a central shaft of the tensioning wheel, and the other end of the guide sliding block is connected with the adjusting mechanism; the side wall of the mounting frame is provided with a bottom plate, the upper side and the lower side of the bottom plate are bent towards the position of the guide sliding block to form a guide sliding groove, the guide sliding block is assembled in the guide sliding groove in a sliding mode, and rubber tracks are assembled outside the driving wheel and the tensioning wheel.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses a dig quick-witted walking wheel chassis structure for a short time sets up integral steel sheet in the mounting bracket structure to buckle the upper and lower both ends of steel sheet, with the rectangle direction spout structure that forms a shape rule, then weld the bottom of this whole steel sheet on the mounting bracket. Firstly, the structure adopts the integral type guide sliding groove formed by bending two ends of the integral type steel plate, the structural strength is more stable, and the defect of welding seams does not exist; in addition, the thickness of the bottom plate of the integral steel plate is directly used as the standard for adjusting the width of the installation space of the tension wheel, so that the space size of the whole guide sliding groove is more accurate, and the processing is convenient. Two side flanges of the guide sliding groove are formed by bending and forming, welding processing is not needed, and only one-time welding and fixing connection is needed.
Preferably, the mounting frame is provided with a mounting groove, the inner walls of two sides of the mounting groove, which are close to one end of the tensioning wheel, are provided with guide sliding grooves, and two ends of the central shaft of the tensioning wheel are provided with guide sliding blocks. Corresponding guide sliding blocks are arranged on two sides of the tensioning wheel, so that the adjusting mechanism has better stability when adjusting the movement of the tensioning wheel.
Furthermore, the adjusting mechanism comprises a connecting shaft, a first connecting plate, a second connecting plate, an elastic element and an adjusting bolt, wherein two ends of the first connecting plate are respectively connected with the two guide sliders to form a guide support, the second connecting plate is connected to the mounting groove, one end of the connecting shaft is connected with the first connecting plate, the other end of the connecting shaft is provided with a thread adjusting hole, one end of the adjusting bolt is in threaded connection with the thread adjusting hole, and the other end of the adjusting bolt is in sliding fit with the second connecting plate; one end of the connecting shaft, which is close to the adjusting bolt, is provided with a limiting step, and the elastic element is arranged between the first connecting plate and the limiting step.
As an improvement, the second connecting plate is provided with a mounting hole, a guide sleeve is arranged in the mounting hole, and the adjusting bolt is in sliding fit in the guide sleeve. After the guide is arranged, the adjusting bolt has stronger stability when moving along the horizontal direction, so that the stability and the straightness of the connecting shaft are ensured.
Preferably, the elastic element is a spring, and the spring is sleeved outside the connecting shaft. The spring is used as an elastic element, so that the installation is convenient, and the elastic force is stable.
And the improved structure is characterized in that a limiting plate is further arranged in the mounting groove, a limiting hole is formed in the limiting plate, and the guide support is assembled in the limiting hole in a sliding mode. The setting of limiting plate, spacing pore structure has further improved the stability of take-up pulley when the horizontal migration adjustment.
And an operation window communicated with the mounting groove is arranged on the outer side wall of the mounting frame and corresponds to the position of the adjusting bolt. This setting of operation window for more convenient when adjusting the tight pulley position directly stretches into the spanner from operation window and can twist adjusting bolt soon to adjust in the mounting groove, and is very convenient.
Drawings
Fig. 1 is a schematic structural view of the chassis of the travelling wheel of the small excavator of the utility model.
Fig. 2 is another angle structure diagram of the chassis of the small excavator walking wheel of the present invention. (removing rubber crawler)
Fig. 3 is a schematic view of the inverted structure of fig. 2.
Fig. 4 is the local explosion schematic diagram of the chassis of the travelling wheel of the small excavator of the utility model. (mainly showing tension wheel, adjusting mechanism)
Fig. 5 is an exploded schematic view of the connecting shaft and the adjusting bolt of the present invention.
Wherein, 1-mounting rack, 1.1-mounting groove, 1.2-operating window, 2-connecting beam, 3-driving wheel, 4-tension wheel, 5-adjusting mechanism, 5.1-connecting shaft, 5.2-first connecting plate, 5.3-second connecting plate, 5.4-elastic element, 5.5-adjusting bolt, 5.5.1-polygonal adjusting part, 6-guiding slide block, 7-bottom plate, 8-guiding chute, 9-rubber track, 10-limiting plate, 10.1-limiting hole, 11-guiding sleeve, 12-connecting nut, 13-guiding wheel
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
In the description of the present invention, it should be noted that the terms "central shaft", "upper", "lower", "inner wall", "outer wall", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, for the sake of distinguishing one from another.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "attached" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model provides a dig machine walking wheel chassis for a short time, including the mounting bracket 1 of two level settings, be equipped with two piece at least connection crossbeam 2 between two mounting brackets 1 to make two mounting brackets 1 form a complete chassis support. In this embodiment, in order to make the integral support have better structural strength, every both ends of connecting crossbeam 2 all adopt the welding mode to be connected with the mounting bracket 1 that corresponds. Of course, in other embodiments, the connecting beam 2 and the mounting frame 1 may be fixed by bolts to increase the detachability.
As shown in fig. 2 and 3, each mounting bracket 1 is provided with a driving wheel 3, a tension wheel 4, and an adjusting mechanism 5 for adjusting the position of the tension wheel, and the mounting bracket 1 is further provided with a hydraulic pump 13, and an output shaft of the hydraulic pump 13 is connected to the driving wheel 3. A guide sliding block 6 is rotatably arranged on the central shaft of the tension wheel 4, and the other end of the guide sliding block 6 is connected with the adjusting mechanism 5; the side wall of the mounting frame 1 is provided with a bottom plate 7, the upper side and the lower side of the bottom plate 7 are bent towards the position of the guide sliding block 6 to form a guide sliding chute 8, the guide sliding block 6 is slidably assembled in the guide sliding chute 8, and the rubber tracks 9 are assembled outside the driving wheel 3 and the tension wheel 4. In actual operation, when the tightness degree of the rubber track 9 needs to be adjusted, the horizontal position of the tensioning wheel 4 on the mounting frame 1 can be adjusted through the adjusting mechanism 5.
Specifically, be equipped with mounting groove 1.1 on the mounting bracket 1, mounting groove 1.1 all is equipped with direction spout 8 on being close to the both sides inner wall of take-up pulley 4 one end, and the both ends of the center pin of take-up pulley 4 all are equipped with direction slider 6. The guide sliding blocks 6 are arranged on the two sides of the tensioning wheel 4, so that the tensioning wheel has better stability and centering performance in horizontal movement and is not easy to deflect.
As shown in fig. 3, two guide wheels 13 are further provided on each mounting bracket 1 between the driving wheel 3 and the tension wheel 4, so that the rubber crawler 9 can climb more smoothly and reliably.
As shown in fig. 4 and 5, more specifically, the adjusting mechanism 5 includes a connecting shaft 5.1, a first connecting plate 5.2, a second connecting plate 5.3, an elastic element 5.4 and an adjusting bolt 5.5, two ends of the first connecting plate 5.2 are respectively connected with two guide sliders 6 to form a guide bracket, the second connecting plate 5.3 is connected to the mounting groove 1.1, one end of the connecting shaft 5.1 is connected with the first connecting plate 5.2, specifically, an external thread section 5.1.2 is arranged at one end of the connecting shaft 5.1, a through hole is arranged on the first connecting plate 5.2, a connecting nut 12 is arranged in the through hole in a penetrating manner, and the connecting nut 12 is spirally connected to the external thread section 5.1.2 of the connecting shaft 5.1, so as to realize the connection between the connecting shaft 5.1 and the first connecting plate 5.2.
The other end of the connecting shaft 5.1 is provided with a thread adjusting hole, one end of an adjusting bolt 5.5 is screwed in the thread adjusting hole, and the other end is in sliding fit with the second connecting plate 5.3; one end of the connecting shaft 5.1, which is close to the adjusting bolt, is provided with a limiting step 5.1.1, and the elastic element 5.4 is arranged between the first connecting plate 5.2 and the limiting step 5.1.1. The improved structure is characterized in that a mounting hole is formed in the second connecting plate 5.3, a guide sleeve 11 is arranged in the mounting hole, one end, far away from the connecting shaft 5.1, of the adjusting bolt 5.5 is in sliding fit in the guide sleeve 11, and a polygonal adjusting portion 5.5.1 is arranged at the tail of the adjusting bolt 5.5 and used for clamping and screwing a wrench.
In this embodiment, the elastic element 5.4 is preferably a spring, and the spring is sleeved outside the connecting shaft 5.1, one end of the spring abuts against the end face of the first connecting plate 5.2, and the other end abuts against the end face of the limit step 5.1.1.
Still be equipped with limiting plate 10 in the mounting groove 1.1, be equipped with spacing hole 10.1 on the limiting plate 10, guide bracket sliding fit is in spacing hole 10.1 to straightness accuracy and stability when increasing the take-up pulley 4 and moving.
In addition, an operation window 1.2 communicated with the mounting groove 1.1 is arranged on the outer side wall of the mounting frame 1, and the operation window 1.2 corresponds to the position of the adjusting bolt 5.5. Specifically, in practical application, after the rubber crawler 9 is installed, a cover plate is arranged on the side wall of the installation frame 1 to block the operation window 1.2, so as to prevent soil from entering during work. When the tensioning wheel 4 is operated and adjusted, the wrench directly extends into the mounting groove from the operation window 1.2, and the polygonal adjusting part 5.5.1 on the adjusting bolt 5.5 is clamped to rotate and adjust.
While the above is directed to the preferred embodiment of the present invention, it is not intended that it be limited, except as by the appended claims. The present invention is not limited to the above embodiments, and the specific structure thereof allows for changes, all the changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.
Claims (7)
1. The utility model provides a dig quick-witted walking wheel chassis for a short time, includes mounting bracket (1) that two levels set up, is equipped with two piece at least connection crossbeam (2) between two mounting bracket (1) to make two mounting bracket (1) form a complete chassis support, its characterized in that: the mounting rack (1) is provided with a driving wheel (3), a tensioning wheel (4) and an adjusting mechanism (5) for adjusting the position of the tensioning wheel, a guiding slide block (6) is rotatably arranged on a central shaft of the tensioning wheel (4), and the other end of the guiding slide block (6) is connected with the adjusting mechanism (5); the side wall of the mounting frame (1) is provided with a bottom plate (7), the upper side and the lower side of the bottom plate (7) are bent towards the position where the guide sliding block (6) is located to form a guide sliding groove (8), the guide sliding block (6) is assembled in the guide sliding groove (8) in a sliding mode, and rubber tracks (9) are assembled outside the driving wheel (3) and the tensioning wheel (4).
2. The miniexcavator walking wheel chassis of claim 1, wherein: be equipped with mounting groove (1.1) on mounting bracket (1), all be equipped with direction spout (8) on mounting groove (1.1) is close to the both sides inner wall of take-up pulley (4) one end, the both ends of the center pin of take-up pulley (4) all are equipped with direction slider (6).
3. The miniexcavator walking wheel chassis of claim 2, wherein: the adjusting mechanism (5) comprises a connecting shaft (5.1), a first connecting plate (5.2), a second connecting plate (5.3), an elastic element (5.4) and an adjusting bolt (5.5), wherein two ends of the first connecting plate (5.2) are respectively connected with two guide sliders (6) to form a guide support, the second connecting plate (5.3) is connected to the mounting groove (1.1), one end of the connecting shaft (5.1) is connected with the first connecting plate (5.2), the other end of the connecting shaft (5.1) is provided with a threaded adjusting hole, one end of the adjusting bolt (5.5) is in threaded connection with the threaded adjusting hole, and the other end of the adjusting bolt is in sliding fit with the second connecting plate (5.3); one end, close to the adjusting bolt, of the connecting shaft (5.1) is provided with a limiting step (5.1.1), and the elastic element (5.4) is arranged between the first connecting plate (5.2) and the limiting step (5.1.1).
4. The miniexcavator walking wheel chassis of claim 3, wherein: the second connecting plate (5.3) is provided with a mounting hole, a guide sleeve (11) is arranged in the mounting hole, and the adjusting bolt (5.5) is in sliding fit in the guide sleeve (11).
5. The miniexcavator walking wheel chassis of claim 3, wherein: the elastic element (5.4) is a spring, and the spring is sleeved outside the connecting shaft (5.1).
6. The miniexcavator walking wheel chassis of claim 3, wherein: still be equipped with limiting plate (10) in mounting groove (1.1), be equipped with spacing hole (10.1) on limiting plate (10), the guide bracket sliding fit in spacing hole (10.1).
7. The miniexcavator walking wheel chassis of claim 2, wherein: the outer side wall of the mounting frame (1) is provided with an operation window (1.2) communicated with the mounting groove (1.1), and the operation window (1.2) corresponds to the position of the adjusting bolt (5.5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920988811.5U CN210526695U (en) | 2019-06-27 | 2019-06-27 | Chassis of travelling wheel of small excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920988811.5U CN210526695U (en) | 2019-06-27 | 2019-06-27 | Chassis of travelling wheel of small excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210526695U true CN210526695U (en) | 2020-05-15 |
Family
ID=70596562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920988811.5U Active CN210526695U (en) | 2019-06-27 | 2019-06-27 | Chassis of travelling wheel of small excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210526695U (en) |
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2019
- 2019-06-27 CN CN201920988811.5U patent/CN210526695U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Sha Sujun Inventor after: Wang Tianhui Inventor before: Sha Sujun |
|
| CB03 | Change of inventor or designer information |