CN219565301U - Track tension adjusting device and crawler-type lifting chassis - Google Patents
Track tension adjusting device and crawler-type lifting chassis Download PDFInfo
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- CN219565301U CN219565301U CN202320832480.2U CN202320832480U CN219565301U CN 219565301 U CN219565301 U CN 219565301U CN 202320832480 U CN202320832480 U CN 202320832480U CN 219565301 U CN219565301 U CN 219565301U
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Abstract
The utility model provides a crawler belt tension adjusting device and a crawler belt lifting chassis, comprising a first connecting seat, a hydraulic cylinder, a tensioning support arm, a tensioning rotating arm, a tensioning wheel, a second connecting seat and a pin shaft assembly; one end of the hydraulic cylinder is connected with the first connecting seat, the other end of the hydraulic cylinder is connected with one end of the tensioning support arm, the other end of the tensioning support arm is connected with the tensioning rotating arm, and the hydraulic cylinder, the tensioning support arm and the tensioning rotating arm form a crank sliding block mechanism; one end of the tensioning rotating arm is connected with the tensioning wheel, and the other end of the tensioning rotating arm is connected with the second connecting seat through the pin shaft assembly. According to the utility model, the hydraulic cylinder, the tensioning support arm and the tensioning rotating arm form a crank block mechanism, so that the hydraulic cylinder is prevented from directly driving the tensioning wheel, and the tensioning rotating arm can be driven to rotate around the pin shaft through the extension and retraction of the hydraulic cylinder, thereby adjusting the height of the tensioning wheel and further achieving the purpose of adjusting the tensioning amount of the crawler belt.
Description
Technical Field
The utility model belongs to the technical field of track tension adjustment, and particularly relates to a track tension adjustment device and a track lifting chassis.
Background
The crawler-type chassis is one of core components of the crawler-type harvester, and when the crawler-type harvester passes through peduncles, slopes and spans areas, the gravity center of the harvester is often deviated, and even the crawler-type chassis can tip over, so that the danger of the harvester in the walking process is improved. A crawler-type lifting chassis with a leveling function becomes one of solutions to this problem, and among these, mainly a four-point lifting chassis based on a parallel four-bar mechanism. In the prior art, a system for automatically regulating and controlling a crawler type four-point lifting chassis is adopted, however, in the process of regulating the posture of a vehicle body, the tightness of the crawler is greatly changed in the process of regulating the angle of the chassis due to the change of the position of a mechanism, and the problem of over-loosening or over-tightening often occurs. The track is too tight can lead to the elongation of track great, causes the track to take place plastic deformation, produce the crackle, takes place the fracture even, significantly reduced the life-span of track, the track is too tight simultaneously can have too big tensioning force, produces very big pressure to the component on the chassis, reduces chassis spare part life. The crawler belt is too loose, so that the driving wheel cannot drive the crawler belt, the crawler belt falls off, and the harvester cannot work.
Therefore, ensuring proper tension of the track during chassis angle adjustment is a core problem to be solved.
Disclosure of Invention
Aiming at the technical problems, the utility model provides the crawler tensioning degree adjusting device and the crawler lifting chassis, wherein the tensioning of the crawler is adjusted in the chassis angle adjusting process, so that the crawler harvester is properly tensioned in the walking process, and better working efficiency is obtained.
The technical scheme adopted for solving the technical problems is as follows:
a track tension adjusting device comprises a first connecting seat, a hydraulic cylinder, a tensioning support arm, a tensioning rotating arm, a tensioning wheel, a second connecting seat and a pin shaft component;
one end of the hydraulic cylinder is connected with the first connecting seat, the other end of the hydraulic cylinder is connected with one end of the tensioning support arm, the other end of the tensioning support arm is connected with the tensioning rotating arm, and the hydraulic cylinder, the tensioning support arm and the tensioning rotating arm form a crank sliding block mechanism; one end of the tensioning rotating arm is connected with the tensioning wheel, and the other end of the tensioning rotating arm is connected with the second connecting seat through the pin shaft assembly.
In the above scheme, the first connecting seat comprises a first ear plate, a first reinforcing plate and a second pin shaft;
the first lug plates are arranged on two sides of the first reinforcing plate, and through holes matched with the second pin shafts are formed in the first lug plates; one end of the hydraulic cylinder is hinged with the first connecting seat through a second pin shaft.
In the scheme, the hydraulic cylinder comprises a cylinder body, a first ear seat and a third pin shaft;
the first ear seat is arranged at the tail end of the output shaft of the cylinder body, a through hole is formed in the cylinder body, the cylinder body is connected with the first connecting seat through the through hole, a through hole matched with the third pin shaft is formed in the first ear seat relatively, and the first ear seat is connected with one end of the tensioning support arm through the third pin shaft.
In the above scheme, the tensioning rotating arm comprises an arm body, a spline shaft, a balancing weight and a second ear seat;
the arm body is provided with 2 through holes, the second ear seat is arranged at one end of the arm body, the second ear seat is provided with opposite through holes matched with the pin shaft assembly, the second ear seat is connected with the second connecting seat through the pin shaft assembly, and one end of the spline shaft penetrates through the through holes, close to the second ear seat, of the arm body to be connected with the balancing weight.
In the scheme, the other end of the tensioning support arm is provided with a spline groove;
the other end of the spline shaft is arranged in the spline groove.
In the above-mentioned scheme, take-up pulley quantity is 2, and two take-up pulleys symmetrical arrangement just are connected with the through-hole that keeps away from the second ear seat on the arm body through the pivot in the middle.
In the above scheme, the second connecting seat comprises a second ear plate, a second reinforcing plate and a sleeve;
the second lug plates are oppositely arranged at two sides of the second reinforcing plate, opposite through holes are formed in the second lug plates, and the sleeves are arranged at the through holes of the second lug plates; the second ear seat is connected with the second ear plate through a pin shaft assembly.
In the above scheme, the pin shaft assembly comprises a cover plate, a first pin shaft and a retainer ring;
the cover plate is arranged at one end of the first pin shaft, the check ring is arranged at the other end of the first pin shaft, the second lug seat is connected with the second connecting seat through the first pin shaft, and the cover plate is used for mounting the first pin shaft on the second lug seat through the bolt.
A crawler-type lifting chassis comprises the crawler tensioning degree adjusting mechanism.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the hydraulic cylinder, the tensioning support arm and the tensioning rotating arm form a crank block mechanism, so that the hydraulic cylinder is prevented from directly driving the tensioning wheel, the tensioning rotating arm can be driven to rotate around the first pin shaft through the extension and retraction of the hydraulic cylinder, and the height of the tensioning wheel is adjusted, and the purpose of adjusting the tensioning amount of the crawler belt is achieved.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of a crawler-type lifting chassis according to an embodiment of the present utility model.
Fig. 2 is a schematic view of a track tension adjusting apparatus according to an embodiment of the present utility model.
Fig. 3 is a schematic top view of a track tension adjusting device according to an embodiment of the present utility model.
Fig. 4 is a schematic side view of a track tension adjusting apparatus according to an embodiment of the present utility model.
Fig. 5 is a schematic view of a second connection seat of the track tension adjusting device according to an embodiment of the utility model.
Fig. 6 is a schematic view of a hydraulic cylinder structure of a track tension adjusting device according to an embodiment of the present utility model.
FIG. 7 is an exploded view of a tensioning arm of a track tensioning device in accordance with one embodiment of the present utility model.
Fig. 8 is a schematic view of a tensioning boom structure of a track tensioning device in accordance with an embodiment of the present utility model.
Fig. 9 is a schematic structural view of a pin assembly of a track tension adjusting device according to an embodiment of the present utility model.
In the figure: 1. a first connection base; 2. a hydraulic cylinder; 3. tensioning the support arm; 4. tensioning rotating arms; 5. a tensioning wheel; 6. a second connecting seat; 7. a pin assembly; 8. a second pin; 9. a third pin; 101. a first ear plate; 102. a first reinforcing plate; 201. a first ear mount; 301. spline grooves; 401. a spline shaft; 402. a second ear mount; 403. balancing weight; 601. a second ear plate; 602. a second reinforcing plate; 603. a sleeve; 701. a cover plate; 702. a first pin; 703. and (5) a retainer ring.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "front", "rear", "left", "right", "upper", "lower", "axial", "radial", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in fig. 1, 2, 3 and 4, the track tensioning device according to a preferred embodiment of the present utility model includes a first connection base 1, a hydraulic cylinder 2, a tensioning arm 3, a tensioning rotating arm 4, a tensioning wheel 5, a second connection base 6 and a pin assembly 7;
one end of the hydraulic cylinder 2 is connected with the first connecting seat 1, the first connecting seat 1 is welded on the upper frame beam, the first connecting seat 1 is positioned on the central line of the walking beam and in the middle position of the walking beam, the bottom surface of the first connecting seat 1 is level with the bottom surface of the upper frame beam, and the welding contact surface is fully contacted with the surface of the upper frame beam so as to ensure that the upper frame beam can bear thrust brought by an oil cylinder and ensure that welding is not loosened;
the other end of the hydraulic cylinder 2 is connected with one end of the tensioning support arm 3, the other end of the tensioning support arm 3 is connected with the tensioning rotating arm 4, and the hydraulic cylinder 2, the tensioning support arm 3 and the tensioning rotating arm 4 form a crank sliding block mechanism; one end of the tensioning rotating arm 4 is connected with the tensioning wheel 5, the other end of the tensioning rotating arm 4 is connected with the second connecting seat 6 through the pin shaft assembly 7, and the second connecting seat 6 is welded on the crawler walking beam.
Preferably, the first connecting seat 1 comprises a first ear plate 101, a first reinforcing plate 102 and a second pin shaft 8;
the first lug plates 101 are arranged on two sides of the first reinforcing plate 102, and through holes matched with the second pin shafts 8 are formed in the first lug plates 101; one end of the hydraulic cylinder 2 is hinged with the first connecting seat 1 through a second pin shaft 8.
Preferably, the first stiffener 102 is welded to the upper frame rail.
Preferably, the first ear plate 101 is welded to both sides of the first reinforcing plate 102.
As shown in fig. 6, preferably, the hydraulic cylinder 2 includes a cylinder body, a first ear mount 201, and a third pin 9;
the first ear seat 201 is arranged at the tail end of the output shaft of the cylinder body, a through hole is formed in the cylinder body, the cylinder body is connected with the first connecting seat 1 through the through hole, a through hole matched with the third pin shaft 9 is formed in the first ear seat 201, and the first ear seat 201 is connected with one end of the tensioning support arm 3 through the third pin shaft 9.
Preferably, the first ear seat 201 is welded to the end of the cylinder output shaft.
As shown in fig. 8, preferably, the tensioning arm 4 includes an arm body, a spline shaft 401, a counterweight 403, and a second ear 402;
be equipped with 2 through-holes on the arm body, second ear seat 402 locates arm body one end, is equipped with relative and round pin axle subassembly 7 complex through-hole on the second ear seat 402, and second ear seat 402 passes through round pin axle subassembly 7 and is connected with second connecting seat 6, and the through-hole that is close to second ear seat 402 on the arm body is passed to one end of integral key shaft 401 is connected with balancing weight 403, and balancing weight 403 is used for fixed integral key shaft 401 and balanced arm body both sides counter weight.
Preferably, the spline shaft 401 and the counterweight 403 are in threaded connection.
As shown in fig. 7, preferably, the other end of the tensioning arm 3 is provided with a spline groove 301;
the other end of the spline shaft 401 is placed in the spline groove 301, so that the tensioning support arm 3 and the tensioning rotating arm 4 cannot relatively displace.
Preferably, the number of the tensioning wheels 5 is 2, and the two tensioning wheels 5 are symmetrically arranged and are connected with the through holes on the arm body far away from the second ear seat 402 through the middle rotating shaft.
As shown in fig. 5, preferably, the second connecting seat 6 includes a second ear plate 601, a second reinforcing plate 602, and a sleeve 603;
the second ear plates 601 are oppositely arranged at two sides of the second reinforcing plate 602, opposite through holes are formed in the second ear plates 601, and the sleeve 603 is arranged at the through holes of the second ear plates 601; the second ear mount 402 is connected to the second ear plate 601 by a pin assembly 7.
Preferably, the second lug plates 601 are welded on two sides of the second reinforcing plate 602 to strengthen the welding strength of the tensioning support, the sleeve 603 is welded at the through hole of the second lug plates 601, and the second lug plates 601 are welded on the crawler beam.
Preferably, the through hole on the second ear plate 601 is a screw hole.
As shown in fig. 9, the pin assembly 7 preferably includes a cover plate 701, a first pin 702, and a retainer ring 703;
the cover plate 701 is arranged at one end of the first pin shaft 702, the check ring 703 is arranged at the other end of the first pin shaft 702, the second ear seat 402 and the second connecting seat 6 are connected through the first pin shaft 702, the cover plate 701 mounts the first pin shaft 702 on the second ear seat 402 through bolts, and the cover plate 701 and the check ring 703 are used for fixing the first pin shaft 702.
Preferably, the cover plate 701 is welded to one end of the first pin 702.
Preferably, the second pin shaft 8 and the third pin shaft 9 are cotter pins, so as to prevent the pin shafts from falling off.
When the tensioning rotary arm 4 and the second connecting seat 6 are hinged through the pin shaft assembly 7, the cover plate 701 and the second lug plate 601 are fixed through bolts and spring washers, and the pin shaft assembly 7 is prevented from moving.
Working principle:
the hydraulic cylinder 2, the tensioning support arm 3 and the tensioning rotating arm 4 form a crank block mechanism, the tensioning support arm 3 and the tensioning rotating arm 4 are connected through a spline shaft to form a whole, the tensioning rotating arm 4 is controlled to rotate around the second connecting seat 6 by controlling the expansion and contraction amount of the hydraulic cylinder 2, the height of the tensioning wheel 5 is adjusted, and the tensioning amount of the crawler belt is adjusted.
Example 2
A crawler-type lifting chassis comprising the crawler tensioning degree adjustment mechanism of embodiment 1.
The first connecting seat 1 and the hydraulic cylinder 2 are connected through a pin shaft, and the pin shaft is prevented from falling off by using a cotter pin; the hydraulic cylinder 2 and the tensioning support arm 3 are connected through a pin shaft, and the pin shaft is prevented from falling off by using a cotter pin; the tensioning support arm 3 and the tensioning rotating arm 4 are connected through a spline on the tensioning rotating arm, so that the tensioning support arm 3 and the tensioning rotating arm 4 cannot generate relative displacement; the tensioning rotating arm 4 and the tensioning wheel 5 are assembled into a whole through hinging; the second connecting seat 6 is arranged on the walking beam; the tensioning swivel arm 4 and the second connecting seat 6 are hinged through a pin assembly 7.
According to the utility model, the hydraulic cylinder 2 does not directly drive the tensioning wheel 5, but forms a crank block mechanism through the hydraulic cylinder 2, the tensioning support arm 3 and the tensioning rotating arm 4, and the tensioning rotating arm 4 is driven to rotate around the pin shaft through the expansion and contraction of the hydraulic cylinder 2, so that the tensioning wheel 5 is adjusted to raise the relative position of the y axis on the plane, and the crawler is lifted, so that the purpose of adjusting the tensioning amount of the crawler is achieved. The above list of detailed descriptions is only specific to practical embodiments of the present utility model, and they are not intended to limit the scope of the present utility model, and all equivalent embodiments or modifications that do not depart from the spirit of the present utility model should be included in the scope of the present utility model.
Claims (9)
1. The crawler belt tension adjusting device is characterized by comprising a first connecting seat (1), a hydraulic cylinder (2), a tensioning support arm (3), a tensioning rotating arm (4), a tensioning wheel (5), a second connecting seat (6) and a pin shaft assembly (7);
one end of the hydraulic cylinder (2) is connected with the first connecting seat (1), the other end of the hydraulic cylinder (2) is connected with one end of the tensioning support arm (3), the other end of the tensioning support arm (3) is connected with the tensioning rotating arm (4), and the hydraulic cylinder (2), the tensioning support arm (3) and the tensioning rotating arm (4) form a crank sliding block mechanism; one end of the tensioning rotating arm (4) is connected with the tensioning wheel (5), and the other end of the tensioning rotating arm (4) is connected with the second connecting seat (6) through the pin shaft assembly (7).
2. Track tensioning adjustment device according to claim 1, characterized in that the first connection seat (1) comprises a first lug plate (101), a first reinforcing plate (102) and a second pin (8);
the first lug plates (101) are arranged on two sides of the first reinforcing plate (102), and through holes matched with the second pin shafts (8) are formed in the first lug plates (101); one end of the hydraulic cylinder (2) is hinged with the first connecting seat (1) through a second pin shaft (8).
3. The track tensioning adjustment device according to claim 1, characterized in that the hydraulic cylinder (2) comprises a cylinder body, a first ear mount (201) and a third pin (9);
the first ear seat (201) is arranged at the tail end of the output shaft of the cylinder body, a through hole is formed in the cylinder body, the cylinder body is connected with the first connecting seat (1) through the through hole, a through hole matched with the third pin shaft (9) is formed in the first ear seat (201), and the first ear seat (201) is connected with one end of the tensioning support arm (3) through the third pin shaft (9).
4. The track tensioning adjustment device of claim 1, wherein the tensioning swivel arm (4) comprises an arm body, a spline shaft (401), a counterweight (403) and a second ear mount (402);
be equipped with 2 through-holes on the arm body, arm body one end is located to second ear seat (402), is equipped with relative and round pin axle subassembly (7) complex through-hole on second ear seat (402), and second ear seat (402) are connected with second connecting seat (6) through round pin axle subassembly (7), and the through-hole that is close to second ear seat (402) on the one end of integral key shaft (401) passed the arm body is connected with balancing weight (403).
5. The track tensioning degree adjustment device according to claim 4, characterized in that the tensioning arm (3) is provided with spline grooves (301) at the other end;
the other end of the spline shaft (401) is arranged in a spline groove (301).
6. The track tensioning degree adjusting device according to claim 4, wherein the number of tensioning wheels (5) is 2, and the two tensioning wheels (5) are symmetrically arranged and are connected with a through hole on the arm body far away from the second lug seat (402) through a middle rotating shaft.
7. The track tensioning adjustment device according to claim 4, characterized in that the second connection seat (6) comprises a second lug plate (601), a second reinforcing plate (602) and a sleeve (603);
the second lug plates (601) are oppositely arranged at two sides of the second reinforcing plate (602), opposite through holes are formed in the second lug plates (601), and the sleeve (603) is arranged at the through holes of the second lug plates (601); the second ear seat (402) is connected with the second ear plate (601) through a pin shaft assembly (7).
8. The track tensioning adjustment device of claim 4, characterized in that the pin assembly (7) comprises a cover plate (701), a first pin (702) and a retainer ring (703);
the cover plate (701) is arranged at one end of the first pin shaft (702), the check ring (703) is arranged at the other end of the first pin shaft (702), the second lug base (402) is connected with the second connecting base (6) through the first pin shaft (702), and the cover plate (701) is used for installing the first pin shaft (702) on the second lug base (402) through bolts.
9. A track lifting chassis comprising a track tension adjustment device according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320832480.2U CN219565301U (en) | 2023-04-14 | 2023-04-14 | Track tension adjusting device and crawler-type lifting chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320832480.2U CN219565301U (en) | 2023-04-14 | 2023-04-14 | Track tension adjusting device and crawler-type lifting chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219565301U true CN219565301U (en) | 2023-08-22 |
Family
ID=87648374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320832480.2U Active CN219565301U (en) | 2023-04-14 | 2023-04-14 | Track tension adjusting device and crawler-type lifting chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219565301U (en) |
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2023
- 2023-04-14 CN CN202320832480.2U patent/CN219565301U/en active Active
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