CN103057616B - Track tensioning system and construction machinery and equipment - Google Patents
Track tensioning system and construction machinery and equipment Download PDFInfo
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- CN103057616B CN103057616B CN201310015517.3A CN201310015517A CN103057616B CN 103057616 B CN103057616 B CN 103057616B CN 201310015517 A CN201310015517 A CN 201310015517A CN 103057616 B CN103057616 B CN 103057616B
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Abstract
The invention provides a kind of track tensioning system and the construction machinery and equipment comprising this track tensioning system, wherein, track tensioning system comprises the detecting unit connected successively, control unit (3) and performance element, detecting unit is used for being captured in the detection signal of the relax level about crawler belt (2) detected in the process that crawler belt (2) walks and this detection signal is sent to control unit (3), according to detection signal, when control unit (3) judges that relax level reaches the first limit value, control unit (3) controls performance element tensioned tracks (2).By detecting the relax level of crawler belt and according to the corresponding tensioned tracks of relax level, tensioning whole piece crawler belt in real time can be guaranteed in crawler travel process.
Description
Technical field
The present invention relates to the tracked construction machinery and equipment of tool, particularly, relate to a kind of track tensioning system and the construction machinery and equipment comprising this track tensioning system.
Background technology
Tracked construction equipment, if crawler crane, crawler type digging machine etc. are widely used visual plants in all kinds of construction, crawler belt is then the important composition of such construction machinery and equipment, is to guarantee that equipment is normal, the key link of stabilized walking.If crawler tensioning degree is inadequate, then easily produces tramp phenomenon (speed of travel is faster, and this phenomenon is more obvious) during walking, cause caterpillar block to jump out upper track wheel.Now as walked on, caterpillar block can be caused to depart from tension wheel.In addition, crawler belt engagement belongs to similar Flexible Transmission, if non-tensioning, caterpillar block hangs between drive wheel and caterpillar wheel by lax, and easily form caterpillar block arch camber, upwarp phenomenon, these all will affect the normal walking of construction machinery and equipment.
At present, there is above-mentioned tramp, arch camber, when upwarping phenomenon, need tensioned tracks.For this reason, parking is needed to carry out tensioning operation.Be specially and under dead ship condition, prop up construction machinery and equipment from below and artificial or carry out tensioned tracks by tensioning hydro-cylinder.Although at that time can by the crawler tensioning above track frame, cannot crawler belt below tensioned tracks frame.Therefore, after crawler belt starts walking, the crawler belt be originally pressed in below track frame will make crawler belt have after forwarding top to certain lax, makes tension effects not ideal enough.
Summary of the invention
The object of this invention is to provide a kind of method of effective tensioned tracks.
To achieve these goals, the invention provides a kind of tensioning method of crawler belt, wherein, the method comprises: (a), in track-type process, detect the relax level of described crawler belt; (b), when described relax level reaches described first limit value, crawler belt described in tensioning.
The present invention also provides a kind of track tensioning system, wherein, described track tensioning system comprises the detecting unit, control unit and the performance element that connect successively, described detecting unit is for being captured in the detection signal of the relax level about described crawler belt detected in track-type process and this detection signal being sent to described control unit, according to described detection signal, when described control unit judges that described relax level reaches the first limit value, described control unit controls crawler belt described in described performance element tensioning.
The present invention also provides a kind of construction machinery and equipment, and wherein, this project machinery comprises track frame, is arranged on the crawler belt on described track frame, and track tensioning system of the present invention.
By technique scheme, by detecting the relax level of crawler belt and according to the corresponding tensioned tracks of relax level, tensioning whole piece crawler belt in real time can be guaranteed in crawler travel process.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the schematic diagram of a kind of embodiment that track tensioning system of the present invention is described.
Description of reference numerals
1: track frame 1a: support portion 2: crawler belt 3: control unit
4: travel switch 5: tensioning hydro-cylinder 6: pipeline 7: dynamical element
8: cable
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality such as " upper and lower, left and right " of use typically refers to reference to upper and lower, left and right shown in the drawings; " inside and outside " refers to profile inside and outside relative to each parts itself.
According to an aspect of the present invention, provide a kind of tensioning method of crawler belt, wherein, the method comprises: detect the relax level of described crawler belt 2 in (a), the process of walking at crawler belt 2; (b), when described relax level reaches described first limit value, crawler belt 2 described in tensioning.
Use method of the present invention, by detecting the relax level of crawler belt 2 and according to the corresponding tensioned tracks 2 of relax level, tensioning whole piece crawler belt in real time can be guaranteed in crawler travel process.Particularly, in the process of walking, crawler belt 2 rotates, and the part be positioned at below track frame 1 of crawler belt 2 can forward the top of track frame 1 to, even if only detect the relax level of crawler belt 2 and also can make whole piece crawler tensioning according to the corresponding tensioned tracks 2 of testing result above track frame 1.
Therefore, preferably, in step (a), the relax level detecting crawler belt 2 can be realized by the sag of chain being positioned at the part above track frame 1 detecting described crawler belt 2.According to dissimilar, the size of crawler belt, described first limit value can be made to be set as suitable numerical value or number range.Such as, the first limit value can be determined according to required degree of tightness amount when the size of caterpillar block pitch and installation.That is, as long as sag of chain can ensure that the tightness of caterpillar block reaches operating needs.For example, when caterpillar block pitch is 200-400mm, the first limit value can be 40-60mm, is preferably 45-55mm.
Wherein, in step (a), detecting unit can be used to detect described sag of chain.For detecting the sag of chain being positioned at the part above track frame 1 of crawler belt 2, described detecting unit can be arranged on the upper surface of described track frame 1, thus enable detecting unit in the face of the part be positioned at above track frame 1 of crawler belt 2.
For realizing above-mentioned detection, detecting unit can be various suitable device or instrument.Such as, detecting unit can be electric elements, as sensor.When using sensor, the distance between detection signal reflection sensor and the crawler belt 2 of the side of being located thereon.Preferably, described detecting unit comprises at least one in travel switch 4, proximity switch.
In addition, in step (b), various suitable mode tensioned tracks 2 can be adopted, as long as the tensioning of crawler belt 2 can be realized and do not affect advancing of crawler belt 2.Preferably, in step (b), when described relax level reaches described first limit value, crawler belt 2 described in the tensioning of tensioning hydro-cylinder device can be used.
Tensioning hydro-cylinder device can adopt type of the prior art, such as, comprise tensioning hydro-cylinder 5, pipeline 6 and dynamical element 7 etc.Wherein, tensioning hydro-cylinder 5 can be installed in position, such as tensioning hydro-cylinder 5 can be arranged on the inside of track frame 1, and near the tension wheel (not shown) for tensioned tracks 2, and one end of tensioning hydro-cylinder 5 (external part of such as piston rod) can promote tension wheel, to implement tensioning.
In addition, in step (b), crawler belt 2 can be made to be tensioned to suitable state.Preferably, in step (b), when described crawler belt 2 be tensioned to make described relax level reach the second limit value time, stop crawler belt 2 described in tensioning, be tensioned to suitable degree to make crawler belt 2.Wherein, described second limit value is less than described first limit value.Such as, when the first limit value is 40mm, the second limit value can be below 40mm, as 35mm.
A kind of track tensioning system is provided according to a further aspect in the invention, wherein, described track tensioning system comprises the detecting unit, control unit 3 and the performance element that connect successively, described detecting unit is for being captured in the detection signal of the relax level about described crawler belt 2 detected in the process of crawler belt 2 walking and this detection signal being sent to described control unit 3, according to described detection signal, when described control unit 3 judges that described relax level reaches the first limit value, described control unit 3 controls crawler belt 2 described in described performance element tensioning.
In track tensioning system of the present invention, use detecting unit in crawler travel process, detect the relax level of crawler belt 2, by control unit 3 according to relax level corresponding control performance element tensioned tracks 2, tensioning whole piece crawler belt in real time can be guaranteed.Particularly, in the process of walking, crawler belt 2 rotates, and the part be positioned at below track frame 1 of crawler belt 2 can forward the top of track frame 1 to, even if only detect the relax level of crawler belt 2 and also can make whole piece crawler tensioning according to the corresponding tensioned tracks 2 of testing result above track frame 1.Therefore, described detecting unit may be used for the sag of chain being positioned at the part above track frame 1 detecting described crawler belt 2.According to dissimilar, the size of crawler belt, described first limit value can be made to be set as suitable numerical value or number range.Such as, the first limit value can be determined according to required degree of tightness amount when the size of caterpillar block pitch and installation.That is, as long as sag of chain can ensure that the tightness of caterpillar block reaches operating needs.For example, when caterpillar block pitch is 200-400mm, the first limit value can be 40-60mm, is preferably 45-55mm.For detecting the sag of chain being positioned at the part above track frame 1 of crawler belt 2, described detecting unit can be arranged on the upper surface of described track frame 1, thus enable detecting unit in the face of the part be positioned at above track frame 1 of crawler belt 2.
Preferably, described detecting unit can be that multiple and along described track frame 1 length direction is arranged.In crawler travel process, as long as the sag of chain having at least a detecting unit to detect reaches the first limit value, control unit 3 will control performance element and carry out tensioning, until reach required tensioning degree.Control unit 3 can be set, be tensioned to suitable state to make crawler belt 2.More preferably, when described control unit 3 controls crawler belt 2 described in described performance element tensioning to when making the relax level of described crawler belt 2 reach the second limit value, described control unit 3 controls described performance element and stops crawler belt 2 described in tensioning, and described second limit value is less than described first limit value.Such as, when the first limit value is 40mm, the second limit value can be below 40mm, as 35mm.
More preferably, the sag of chain of the easily sagging part of crawler belt 2 can be detected.As shown in Figure 1, described track frame 1 comprises the support portion 1a for supporting described crawler belt 2, and easily sagging part comprises the part between the support portion 1a of crawler belt 2.For this reason, described detecting unit can be provided with between two described support portion 1a.In addition, easily sagging part also comprises the knuckle section of crawler belt 2, therefore, selectively, can arrange described detecting unit respectively in 1a both sides, described support portion.
For realizing above-mentioned detection, detecting unit can be various suitable device or instrument.Such as, detecting unit can be electric elements, as sensor.When using sensor, the distance between detection signal reflection sensor and the crawler belt 2 of the side of being located thereon.Control unit 3, after this detection signal of reception, needs to judge whether the distance between the crawler belt 2 of sensor and the side of being located thereon reaches the first limit value.
For convenience of operation, preferably, described detecting unit comprises at least one in travel switch 4, proximity switch.In the embodiment shown in Fig. 1, detecting unit is travel switch 4, travel switch 4 can be set to just contact with travel switch 4 when the sag of chain of the part be positioned at above track frame 1 of crawler belt 2 reaches the first limit value.Therefore, the detection signal that travel switch 4 sends is two kinds, that is: the not actuation signal sent when the actuation signal sent when crawler belt 2 contacts with travel switch 4 and crawler belt 2 do not contact with travel switch 4.Thus, when the sag of chain of the part be positioned at above track frame 1 of crawler belt 2 reaches the first limit value, crawler belt 2 touches travel switch 4, and travel switch 4 sends actuation signal to control unit 2, and control unit 3 controls performance element and carries out tensioning after receiving this actuation signal; When the sag of chain of the part be positioned at above track frame 1 of crawler belt 2 does not reach the first limit value, crawler belt 2 is contacting travel switch 4 not, and travel switch 4 sends not actuation signal to control unit 3, and control unit 3 does not control performance element and carries out tensioning.
In addition, travel switch 4 can be can the type of self-return, thus when control unit 3 controls performance element tensioned tracks 2 and makes the sag of chain of the part be positioned at above track frame 1 of crawler belt 2 be reduced to be less than the first limit value, travel switch 4 can self-return, send not actuation signal to control unit 3, control unit 3 controls performance element and stops tensioning simultaneously.
Selectively, detecting unit of the present invention also can be proximity switch, thus when the sag of chain of the part be positioned at above track frame 1 of crawler belt 2 reaches setting value (i.e. first limit value) of proximity switch, proximity switch sends actuation signal to control unit 3, otherwise proximity switch sends not actuation signal to control unit 3.Concrete operations are similar with the embodiment of employing travel switch 4, do not elaborate at this.
Wherein, performance element can be various suitable structures, as long as can carry out corresponding tensioning operation in response to the instruction of control unit 3.Such as, in the embodiment shown in Fig. 1, described performance element can be tensioning hydro-cylinder device, and this tensioning hydro-cylinder device comprises tensioning hydro-cylinder 5, dynamical element 7 and is connected the pipeline 6 of described tensioning hydro-cylinder 5 and described dynamical element 7, and described dynamical element 7 is electrically connected with described control unit 3.As shown in Figure 1, travel switch 4, connect respectively by cable 8 between dynamical element 7 and control unit 3.Dynamical element 7 comprises fuel tank etc., for instruction and the driving tensioning hydro-cylinder 5 of reception control unit 3.
Preferably, when crawler belt 2 is tensioned to suitable degree, when the sag of chain of the part be positioned at above track frame 1 of crawler belt 2 being reduced to be less than the first limit value, control unit 3 controls performance element and stops tensioning.For preventing tensioning hydro-cylinder 5 from regaining, described tensioning hydro-cylinder 5 can comprise hydraulic lock.In addition, when keeping in repair or need dismounting crawler belt 2 because of other reasons, control unit 3 can be set, make it control operation that performance element carries out lax crawler belt 2, namely make tensioning hydro-cylinder 5 regain.For this reason, described dynamical element 7 can comprise solenoid directional control valve, thus uses solenoid directional control valve to be adjusted to oil circuit retracted orientation, to carry out the loose operations reverse with tensioning operation.
According to a further aspect in the invention, provide a kind of construction machinery and equipment, it is characterized in that, this project machinery comprises track frame 1, is arranged on the crawler belt 2 on described track frame 1, and track tensioning system of the present invention.
In the present invention, control unit 3 can be various suitable appliance controling element, and such as PLC, does not do concrete restriction at this.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each the concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode.In order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a track tensioning system, it is characterized in that, described track tensioning system comprises the detecting unit connected successively, control unit (3) and performance element, described detecting unit is used for being captured in the detection signal of the relax level about described crawler belt (2) detected by electric elements in the process that crawler belt (2) walks and this detection signal is sent to described control unit (3), according to described detection signal, when described control unit (3) judges that described relax level reaches the first limit value, described control unit (3) controls crawler belt (2) described in described performance element tensioning, wherein, described performance element is tensioning hydro-cylinder device, this tensioning hydro-cylinder device comprises tensioning hydro-cylinder (5), dynamical element (7) and the pipeline (6) being connected described tensioning hydro-cylinder (5) and described dynamical element (7), described dynamical element (7) is electrically connected with described control unit (3), described tensioning hydro-cylinder (5) comprises hydraulic lock, and/or, described dynamical element (7) comprises solenoid directional control valve.
2. track tensioning system according to claim 1, wherein, described detecting unit is for detecting the sag of chain being positioned at the part of track frame (1) top of described crawler belt (2).
3. track tensioning system according to claim 2, wherein, described detecting unit is arranged on the upper surface of described track frame (1).
4. track tensioning system according to claim 3, wherein, described detecting unit is that multiple and along described track frame (1) length direction is arranged, described track frame (1) comprises the support portion (1a) for supporting described crawler belt (2), described detecting unit is provided with between two described support portions (1a), or described support portion (1a) both sides are respectively arranged with described detecting unit.
5. track tensioning system according to claim 4, wherein, described detecting unit comprises at least one in travel switch (4), proximity switch.
6. track tensioning system according to claim 1, wherein, when described control unit (3) controls crawler belt (2) described in described performance element tensioning to when making the relax level of described crawler belt (2) reach the second limit value, described control unit (3) controls described performance element and stops crawler belt (2) described in tensioning, and described second limit value is less than described first limit value.
7. a construction machinery and equipment, is characterized in that, this project machinery comprises track frame (1), is arranged on the crawler belt (2) on described track frame (1), and according to the track tensioning system in claim 1-6 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310015517.3A CN103057616B (en) | 2013-01-16 | 2013-01-16 | Track tensioning system and construction machinery and equipment |
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| CN201310015517.3A CN103057616B (en) | 2013-01-16 | 2013-01-16 | Track tensioning system and construction machinery and equipment |
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| CN103057616A CN103057616A (en) | 2013-04-24 |
| CN103057616B true CN103057616B (en) | 2015-12-09 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806483B (en) * | 2014-02-19 | 2016-01-06 | 洛阳理工学院 | A kind of crawler dozer that can detect crawler tensioning degree |
| CN103802901B (en) * | 2014-02-19 | 2016-08-24 | 洛阳理工学院 | A kind of crawler-mounted excavator that can detect crawler tensioning degree |
| CN103802902B (en) * | 2014-02-19 | 2015-10-14 | 洛阳理工学院 | A kind of crawler doer |
| CN107167315B (en) * | 2017-06-19 | 2023-07-25 | 苏州大学 | Caterpillar band loosening early warning device and method |
| US11667342B2 (en) | 2019-10-03 | 2023-06-06 | Deere & Company | Active track-chain sag management systems for crawler vehicles |
| CN111947728A (en) * | 2020-08-21 | 2020-11-17 | 三一重机有限公司 | Oil quantity detection system and method |
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| SU435156A1 (en) * | 1972-01-28 | 1974-07-05 | В. С. Семенов , Г. С. Запольских | DEVICE FOR TENSION OF TRACKED CHAIN VEHICLE |
| SU1110707A1 (en) * | 1981-09-09 | 1984-08-30 | Объединение "Ленмелиорация" | Method for improving improving capacity of cross-country travel of track-mounted vehicles |
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| JPS60226373A (en) * | 1984-06-14 | 1985-11-11 | Seirei Ind Co Ltd | Belt-tension adjusting structure of endless-track car |
| US5372212A (en) * | 1990-01-17 | 1994-12-13 | Group Lotus Limited | Suspension for a tracked vehicle |
| CN101596920B (en) * | 2009-06-30 | 2011-05-11 | 三一重工股份有限公司 | Track tensioning device, track type engineering machinery and method for adjusting track tensioning force |
| CN201620339U (en) * | 2010-03-02 | 2010-11-03 | 陕西中大机械集团有限责任公司 | Crawler expanding mechanism of multifunctional spreading machine |
| CN102336228B (en) * | 2010-07-16 | 2013-01-16 | 北汽福田汽车股份有限公司 | Bracket for crawler belt of crawler-belt type vehicle and crawler belt tensioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU435156A1 (en) * | 1972-01-28 | 1974-07-05 | В. С. Семенов , Г. С. Запольских | DEVICE FOR TENSION OF TRACKED CHAIN VEHICLE |
| SU1110707A1 (en) * | 1981-09-09 | 1984-08-30 | Объединение "Ленмелиорация" | Method for improving improving capacity of cross-country travel of track-mounted vehicles |
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