CN203974994U - The tightening device of crawler belt and machine - Google Patents
The tightening device of crawler belt and machine Download PDFInfo
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- CN203974994U CN203974994U CN201420467194.1U CN201420467194U CN203974994U CN 203974994 U CN203974994 U CN 203974994U CN 201420467194 U CN201420467194 U CN 201420467194U CN 203974994 U CN203974994 U CN 203974994U
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- expansion link
- crawler belt
- walker
- guide wheel
- tightening device
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Abstract
The utility model relates to the tightening device of crawler belt and comprises the machine of this tightening device.The tightening device of crawler belt comprises guide wheel, tensioning cylinder and buffer gear.Guide wheel is slidably disposed in walker via guide wheel support, and can under the effect of tensioning cylinder, make crawler tensioning.Tensioning cylinder is arranged between buffer gear and guide wheel, and comprises the cylinder body being bearing in slidably in walker and be arranged on the plunger in this cylinder body.Buffer gear comprises the expansion link being slidably disposed in walker and is sleeved on the spring on this expansion link.The first end of expansion link is through being formed at the perforate in walker.The first end of spring be fixed on walker or the spring perch that is connected with walker on.The second end of spring is against the second end of expansion link.The second end of expansion link and tensioning cylinder separably mutually against.Due to expansion link and tensioning cylinder only mutually against, while having avoided both to be connected because line of centers departs from the failsafety that cause.
Description
Technical field
The utility model relates to engineering machinery field, relates in particular to the Work machine with crawler type walking mechanism.More specifically, the utility model relates to the tightening device and the machine with this tightening device of crawler belt.
Background technology
Work machine such as excavating machine, bulldozer, loader, trac., hoisting crane adopts crawler type walking mechanism conventionally, it has the advantages such as tractive force is large, grounding pressure is low, hill climbing ability is strong, and is highly suitable for rough road, rubble ground and muddy Active workings etc.Crawler type walking mechanism must arrange tightening device, to guarantee that crawler belt has suitable degree of tension, even prevent from causing because crawler belt is too lax wearing and tearing between parts as for crawler belt and chain releasing.
In crawler type walking mechanism, can adopt various types of tightening devices, such as fluid pressure type tensioning, spring loaded tensioning, screw tensioning etc.At present widespread use be the hydraulic tension device with recoil spring, wherein by tensioning hydro-cylinder, guide wheel is applied to predetermined tensile force, recoil spring is set on the expansion link being connected with tensioning hydro-cylinder conventionally.For such tightening device, when the line of centers of expansion link and the line of centers of tensioning hydro-cylinder depart from mutually, easily cause in the course of the work failsafety.Therefore, higher to the accuracy requirement in manufacture and fitting process.
Utility model content
An object of the present utility model is track takeup of the prior art to improve, to reduce manufacturing cost and matching requirements and to improve durability.
First aspect of the present utility model provides a kind of tightening device of crawler belt, the tightening device of this crawler belt comprises guide wheel, tensioning cylinder and buffer gear, described guide wheel is slidably disposed in walker via guide wheel support, and can under the effect of described tensioning cylinder, make crawler tensioning, described tensioning cylinder is arranged between described buffer gear and described guide wheel, and comprise the cylinder body being bearing in slidably in walker and be arranged on the plunger in this cylinder body, described buffer gear comprises the expansion link being slidably disposed in walker and is sleeved on the spring on this expansion link, the first end of described expansion link is through being formed at the perforate in walker, the first end of described spring be fixed on walker or the spring perch that is connected with walker on, the second end of described spring is against the second end of described expansion link, wherein, the second end of described expansion link and described tensioning cylinder with separable mode mutually against.
In this article, statement " with separable mode mutually against " refer to that two related parts itself are parts separate, that can separate, they under crawler tensioning state only with the mode of face contact mutually against, but by any mode such as welding, being threaded, be not fixed together.
In an embodiment of the tightening device of above-mentioned crawler belt, the second end of described expansion link is resisted against described cylinder body.In this case, described plunger preferably with described guide wheel support with separable mode mutually against.Or described plunger also can be fixedly connected with described guide wheel support.
In another embodiment of the tightening device of above-mentioned crawler belt, the second end of described expansion link is resisted against described plunger.In this case, described cylinder body preferably with described guide wheel support with separable mode mutually against.Or, described cylinder body with also can be fixedly connected with by described guide wheel support.
Preferably, the second end at described expansion link has formed flange.
Further preferably, described buffer gear also comprises another spring perch arranging against described flange, and the second end of described spring is against described another spring perch.
In addition preferably, on the outer peripheral face of described expansion link, be arranged with sleeve, described sleeve is suitable for by with walker or be fixed to the displacement stroke that spring perch on walker contacts to limit described expansion link.
Second aspect of the present utility model provides a kind of machine with the tightening device of above-mentioned crawler belt.
According to the tightening device of crawler belt of the present utility model with have the machine of this tightening device, the expansion link of buffer gear and tensioning cylinder are separate parts, they under crawler tensioning state only mutually against and be not fixed together.Therefore, be fixed together and compare with tensioning cylinder with expansion link, the failsafety that caused while having avoided the line of centers of expansion link and the line of centers of tensioning cylinder mutually to depart from.In addition, (be for example integrally formed as single parts with expansion link and tensioning cylinder, expansion link is formed by the prolongation of the plunger of tensioning cylinder) situation compare, the centre hole at the centre hole of tensioning cylinder supporting portion and expansion link free and bearing position does not need very high right alignment, thereby has reduced manufacturing cost and matching requirements.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram of the crawler type walking mechanism of the utility model one embodiment.
Fig. 2 is the partial cross section view of the crawler type walking mechanism shown in Fig. 1, shows track takeup.
Fig. 3 is the partial enlarged view of the track takeup shown in Fig. 2.
The specific embodiment
Exemplary embodiment of the present utility model is described with reference to the accompanying drawings.
Fig. 1 has schematically shown according to the crawler type walking mechanism of the utility model one embodiment.As shown in Figure 1, crawler belt 1 is wrapped on walker 2.A side (left side in Fig. 1) at walker 2 is connected with drive wheel (not shown), this drive wheel and crawler belt 1 tooth engagement, and can drive and rotate by not shown actuating device.Opposite side (right side in Fig. 1) at walker 2 is connected with guide wheel 3 (shown in Fig. 2), for guiding crawler belt 1.Guide wheel 3 can slide with respect to walker 2, to adjust the tightness of crawler belt 1, described below.Between walker 2 and the crawler belt 1 at its downside, be provided with a plurality of (for example seven) caterpillar wheel (not shown).At walker 2 and be located thereon and be provided with a plurality of (Figure 1 shows that two) holder sprocket wheel 5 between the crawler belt 1 of side.
Fig. 2 shows according to the track takeup of the utility model one embodiment with the form of section drawing, and Fig. 3 shows the partial enlarged drawing of this track takeup.As shown in Figures 2 and 3, guide wheel 3 is arranged on guide wheel support 6, and can be by sliding in the guide rail of this guide wheel support 6 in being formed at walker 2.For guide wheel 3 being withstood on crawler belt 1, be provided with tensioning cylinder, this tensioning cylinder comprises cylinder body 7 and is arranged on the plunger 8 in this cylinder body 7.Cylinder body 7 is bearing in the support 9 being connected with walker 2 slidably via bearing, and is provided with zerk 10 and oil drain plug 11.An end (right part in figure) of plunger 8 is against guide wheel support 6.When by zerk 10 to by cylinder body 7 and plunger 8, limited the interior servicing fluids hydraulic fluid of chamber 12 (for example butter) time, the pressure of hydraulic fluid promotes plunger 8 to the right side in figure, this plunger 8 promotes again guide wheel support 6 and moves right, thereby guide wheel 3 is pressed on crawler belt 1.If crawler belt 1 tension, can emit a part of hydraulic fluid in chamber 12 by oil drain plug 11, reduce thus track tensioning force.Zerk 10 and oil drain plug 11 are sealed by capping 13 (shown in Fig. 1).
For fear of due to such as impacted the failsafety such as wheel shaft that cause guide wheel 2 in the situation that running into obstacle, track takeup also has buffer gear.In the embodiment shown in Fig. 2 and Fig. 3, buffer gear comprises expansion link 14, spring 15, spring front stall 16 and spring back seat 17.Expansion link 14 is slidably disposed in walker 2.Spring 15 is sleeved on expansion link on 14, and its two ends are resisted against respectively spring front stall 16 and spring back seat 17.Spring back seat 17 is fixedly attached on walker 2, or directly by the part of walker 2, is formed.The first end of expansion link 14 (left end in figure) is through the perforate 18 that is formed at spring back seat 17.The second end of expansion link 14 (right-hand member in figure) is provided with flange 19.Under crawler tensioning state, the front end face of flange 19 is against cylinder body 7, and spring front stall 16 is against the aft end face of flange 19.In a further embodiment, spring front stall 16 can be integrally formed with expansion link 14.
When guide wheel 3 is subject to, along in figure during towards the impact of the directive effect in left side, sliding left in the unshowned in the drawings guide rail of guide wheel 3 and guide wheel support 6 under crawler tensioning state, and promotion and guide wheel support 6 against plunger 8 slide left.Due to the incompressibility of hydraulic fluid, cylinder body 7 also slides left together with plunger 8, and promote with it against the flange 19 of expansion link 14 slide left.Spring front stall 16 slides left and Compress Spring 15 under the thrust of flange 19.Thus, the impact energy being applied on guide wheel 3 is absorbed by spring 15, and can not cause damage to the parts of traveling gear.
In illustrated embodiment, on the outer peripheral face of expansion link 14, be also arranged with sleeve 20, this sleeve 20 can endwisely slip with respect to expansion link 14.Sleeve 20 can be formed by the material different from expansion link 14.In a further embodiment, sleeve 20 can be integrally formed with expansion link 14 and spring front stall 16.In the situation that guide wheel 3 is subject to impact as above, when the distance being moved to the left when expansion link 14 reaches predetermined extreme limit of travel, the left end of sleeve 20 is against spring back seat 17, thereby stoped being moved further of expansion link 14 and spring front stall 16.Thus, limited the displacement stroke of expansion link 14 and guide wheel 3, thereby prevented that crawler belt is by overrelaxation.
Industrial usability
According to track takeup of the present utility model, can be applicable to the various Work machines with crawler type walking mechanism, such as excavating machine, bulldozer, loader, trac., hoisting crane etc.Below the concise and to the point mode of action and the effect of describing this track takeup.
Still referring to figs. 1 to the embodiment shown in 3, after track takeup and crawler belt are assembled on walker 2, the interior injection liquid hydraulic fluid of chamber 12 (for example butter) by zerk 10 to tensioning cylinder.The pressure of hydraulic fluid slides plunger 8 to the right in cylinder body 7, and promote with it against guide wheel support 6 also slide to the right.Guide wheel 3 slides to the right in the guide rail that is formed at walker 2 with guide wheel support 6, applies tensile force thus to crawler belt 1.On the other hand, the pressure of hydraulic fluid also makes the flange 19 of expansion link 14 and the cylinder body 7 of tensioning cylinder be abutted together with the compressive force of spring 15 jointly.By the specification of suitable selection spring 15 and the amount of the hydraulic fluid in injecting chamber 12, the tensile force of crawler belt 1 can be set as to specified value, and each parts of track takeup are in balance position.
When crawler belt 1 runs into obstacle in the process of walking, guide wheel 3 be subject to along in figure towards the impact of the directive effect in left side.As mentioned before, the application force of this impact can be delivered to spring 15 by flange 19 and the spring front stall 16 of guide wheel 3, guide wheel support 6, plunger 8, cylinder body 7, expansion link 14, and by making spring 15 compressions carry out apparatus with shock absorbing, and can not cause damage to the parts of traveling gear.Sleeve 20 can limit the displacement stroke of expansion link 14 and guide wheel 3, thereby prevents that crawler belt is by overrelaxation.After crawler belt 1 clears the jumps, the power acting on guide wheel 3 disappears, the compressive force of spring 15 is delivered to guide wheel 3 by spring front stall 16, flange 19, cylinder body 7, plunger 8, guide wheel support 6, thereby make crawler belt 1 tensioning again, and each parts of track takeup come back to previous balance position.
If need to adjust the tensile force of crawler belt 1, can open capping 13, by increasing tensile force by means of zerk 10 to the interior servicing fluids hydraulic fluid of chamber 12, or reduce tensile force by backing out a part of hydraulic fluid that oil drain plug 11 emits in chamber 12.
In illustrated embodiment, the cylinder body 7 of tensioning cylinder against the flange 19 of expansion link 14 and plunger 8 against guide wheel support 6.Yet the utility model is not limited to this.According to the needs of actual conditions, the cylinder body of tensioning cylinder can be against guide wheel support 6, and plunger can be against the flange 19 of expansion link 14.In a further embodiment, the cylinder body of tensioning cylinder or plunger also can be fixedly connected with guide wheel support 6.
In the hydraulic tension device with recoil spring of routine, recoil spring is set on the expansion link being connected with tensioning cylinder conventionally, and this roughly corresponding to the right part of expansion link shown in Fig. 2 14 and the cylinder body of tensioning cylinder 7, by welding or bolt, is connected situation about being fixed together or the plunger 8 of expansion link 14 and tensioning cylinder is threaded connection situation about being fixed together.Tightening device for this routine, if the line of centers of the line of centers of expansion link and tensioning cylinder departs from mutually, not only make being connected of fitting work, particularly expansion link and tensioning cylinder be difficult for carrying out, and can produce stress in the inside of the expansion link being connected and tensioning cylinder, thereby easily cause failsafety.For fear of there are the problems referred to above, must guarantee in walker for supporting the support holes (being the medium pore of support 9) of tensioning cylinder and for supporting the free-ended support holes of expansion link (being the perforate 18 of spring back seat 17) the strict centering of line of centers separately.
Unlike this, the utility model proposes make expansion link and tensioning cylinder the end facing with each other only mutually against and be not fixed together, thereby solved the problems referred to above in conventional tightening device, made fitting work simple, and improved the durability of whole device.In addition, make expansion link and tensioning cylinder mutually against the tensioning for tightening device and pooling feature, not cause any adverse effect in separable mode.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, to those skilled in the art, can in the situation that not departing from scope of the present utility model, to the utility model, make multiple improvement and modification.Those skilled in the art is by considering that in this specification sheets, disclosed content also can obtain other embodiment.This specification sheets and example only should be regarded as exemplary, and true scope of the present utility model is limited by claims and equivalent.
Claims (11)
1. the tightening device of a crawler belt, comprise guide wheel, tensioning cylinder and buffer gear, described guide wheel is slidably disposed in walker via guide wheel support, and can under the effect of described tensioning cylinder, make crawler tensioning, described tensioning cylinder is arranged between described buffer gear and described guide wheel, and comprise the cylinder body being bearing in slidably in walker and be arranged on the plunger in this cylinder body, described buffer gear comprises the expansion link being slidably disposed in walker and is sleeved on the spring on this expansion link, the first end of described expansion link is through being formed at the perforate in walker, the first end of described spring be fixed on walker or the spring perch that is connected with walker on, the second end of described spring is against the second end of described expansion link, wherein, the second end of described expansion link and described tensioning cylinder with separable mode mutually against.
2. the tightening device of crawler belt according to claim 1, is characterized in that, the second end of described expansion link is resisted against described cylinder body.
3. the tightening device of crawler belt according to claim 2, is characterized in that, described plunger and described guide wheel support with separable mode mutually against.
4. the tightening device of crawler belt according to claim 2, is characterized in that, described plunger is fixedly connected with described guide wheel support.
5. the tightening device of crawler belt according to claim 1, is characterized in that, the second end of described expansion link is resisted against described plunger.
6. the tightening device of crawler belt according to claim 5, is characterized in that, described cylinder body and described guide wheel support with separable mode mutually against.
7. the tightening device of crawler belt according to claim 5, is characterized in that, described cylinder body is fixedly connected with described guide wheel support.
8. according to the tightening device of the crawler belt described in any one in claim 1 to 7, it is characterized in that, at the second end of described expansion link, formed flange.
9. the tightening device of crawler belt according to claim 8, is characterized in that, described buffer gear also comprises another spring perch arranging against described flange, and the second end of described spring is against described another spring perch.
10. the tightening device of crawler belt according to claim 8, it is characterized in that, on the outer peripheral face of described expansion link, be arranged with sleeve, described sleeve is suitable for by with walker or be fixed to the displacement stroke that spring perch on walker contacts to limit described expansion link.
11. 1 kinds of machines, is characterized in that having the tightening device according to the crawler belt described in any one in claim 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467194.1U CN203974994U (en) | 2014-08-19 | 2014-08-19 | The tightening device of crawler belt and machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467194.1U CN203974994U (en) | 2014-08-19 | 2014-08-19 | The tightening device of crawler belt and machine |
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| Publication Number | Publication Date |
|---|---|
| CN203974994U true CN203974994U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420467194.1U Active CN203974994U (en) | 2014-08-19 | 2014-08-19 | The tightening device of crawler belt and machine |
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| CN (1) | CN203974994U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107810760A (en) * | 2017-11-08 | 2018-03-20 | 河南省烟草公司平顶山市公司 | Towed tobacco planting mulch film laying apparatus |
| CN113463704A (en) * | 2021-06-25 | 2021-10-01 | 高邮市迅达工程机械集团有限公司 | Armored crawler self-propelled bulldozer blade pushing device and using method |
-
2014
- 2014-08-19 CN CN201420467194.1U patent/CN203974994U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107810760A (en) * | 2017-11-08 | 2018-03-20 | 河南省烟草公司平顶山市公司 | Towed tobacco planting mulch film laying apparatus |
| CN107810760B (en) * | 2017-11-08 | 2023-11-03 | 河南省烟草公司平顶山市公司 | Traction type mulching film laying device for tobacco planting |
| CN113463704A (en) * | 2021-06-25 | 2021-10-01 | 高邮市迅达工程机械集团有限公司 | Armored crawler self-propelled bulldozer blade pushing device and using method |
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| C14 | Grant of patent or utility model | ||
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