CN103953287A - Gap adjustment mechanism for lower frame and engineering machinery - Google Patents
Gap adjustment mechanism for lower frame and engineering machinery Download PDFInfo
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- CN103953287A CN103953287A CN201410205376.6A CN201410205376A CN103953287A CN 103953287 A CN103953287 A CN 103953287A CN 201410205376 A CN201410205376 A CN 201410205376A CN 103953287 A CN103953287 A CN 103953287A
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- walker
- vehicle frame
- supporting leg
- adjustment
- guiding mechanism
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Abstract
The invention discloses a gap adjustment mechanism for a lower frame and engineering machinery. The lower frame comprises a main frame, a right walking frame and a left walking frame; legs of the right walking frame and the left walking frame are spliced to the main frame, and are mutually sleeved inside the main frame; the gap adjustment mechanism comprises an upper adjustment mechanism and a lower adjustment mechanism, wherein the upper adjustment mechanism is used for being arranged in an upper adjustment hole formed in a top plate of the main frame and is used for limiting the upward displacement distance of a leg sleeved position; a space between the upper adjustment mechanism and the leg sleeved position is adjustable; the lower adjustment mechanism is arranged in a lower adjustment hole formed in a bottom plate of the main frame and is used for limiting the downward displacement distance of the legs of the left and right walking frames; spaces between the lower adjustment mechanism and the legs of the left and right walking frame are adjustable. Therefore by the gap adjustment mechanism for the lower frame, the requirement on frame fit dimension during manufacture can be reduced by adjusting a gap of the lower frame.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of lower vehicle frame clearance adjustment mechanism and be provided with the engineering machinery of this lower vehicle frame clearance adjustment mechanism.
Background technology
Under rotary drilling rig, the flexible form of vehicle frame has various structures, as vehicle frame, H type vehicle frame under inverted plug type.Wherein, under inverted plug type, vehicle frame refers to that the walker supporting leg of rotary drilling rig inserts the form of main car frame square hole, under inverted plug type, the main advantage of vehicle frame contrast H type vehicle frame is to obtain larger spreading width, thereby provide higher job stability, but under inverted plug type, body frame structure for automotive and matching relationship are all more complex than H type vehicle frame.
In addition, the present inventor finds: under inverted plug type, in body frame structure for automotive, the gap between walker supporting leg and main car frame square hole can directly have influence on the performance of rotary drilling rig, for example, excesssive gap can increase the weight of rocking of rig when work, thereby affects the stability of complete machine; Too small assembling and the flexible difficulty of crawler belt of can causing again in gap, affects production efficiency and use.
Summary of the invention
In view of this, the embodiment of the present invention proposes a kind of lower vehicle frame clearance adjustment mechanism, can descend the gap of vehicle frame to reduce the requirement to vehicle frame fit dimension in manufacture by adjusting.In addition, the embodiment of the present invention also proposes a kind of engineering machinery that is provided with this lower vehicle frame clearance adjustment mechanism.
For achieving the above object, the technical scheme of the embodiment of the present invention is achieved in that
On the one hand, the embodiment of the present invention provides a kind of lower vehicle frame clearance adjustment mechanism, described lower vehicle frame comprises main car frame, right walker and left walker, and the supporting leg of described right walker and left walker is plugged in described main car frame, and described supporting leg is in the inner socket mutually of main car frame; Described clearance adjustment mechanism comprises: upper guiding mechanism, and for being arranged at the upper adjusting hole of offering on described main car frame top board, and for the supporting leg socket place that limits described right walker and left walker displacement upwards; The spacing of described upper guiding mechanism and described supporting leg socket place is adjustable; Lower guiding mechanism, for being arranged at the lower adjusting hole of offering on described main car frame base plate, and for limiting the downward displacement of supporting leg of described right walker and left walker; The spacing of the supporting leg of described lower guiding mechanism and described right walker and left walker is adjustable.
In certain embodiments, described upper adjusting hole is positioned at the middle part of described main car frame top board, and correspondence is arranged at the initial position that the supporting leg of described right walker and left walker is socketed mutually.
In certain embodiments, the described lower adjusting hole corresponding supporting leg slideway bottom that is arranged at described right walker and left walker respectively.
In certain embodiments, described lower guiding mechanism comprises: first time guiding mechanism, is arranged at the lower adjusting hole that described main car frame left-side bottom is offered, for limiting the downward displacement of supporting leg of described left walker; Second time guiding mechanism, is arranged at the lower adjusting hole that described main car frame right side base plate is offered, for limiting the downward displacement of supporting leg of described right walker.
In certain embodiments, described first time guiding mechanism comprises: first time adjustment block, for being embedded at described lower adjusting hole; Undersetting, setting corresponding to described lower adjusting hole, and be fixedly connected on the base plate of described main car frame; Lower adjustment part, be connected with described undersetting and the two relative position adjustable, described lower adjustment part and described first time adjustment block butt; Lower tight lock part, for described lower adjustment part and the described undersetting of locking, makes it remain on assigned address.
In certain embodiments, the quantity of described first time adjustment block is two, lays respectively between the slideway and described undersetting of described left walker; The spacing of the thickness of described first time adjustment block and described left walker and described undersetting adapts.
In certain embodiments, described second time guiding mechanism is identical with the structure of described first time guiding mechanism; Wherein, the quantity of second time adjustment block of described second time guiding mechanism is two, lays respectively between described right walker and described undersetting; The spacing of the thickness of described second time adjustment block and described right walker downside and described undersetting adapts.
In certain embodiments, described upper guiding mechanism comprises: upper setting block, for being embedded at described upper adjusting hole; Upper bracket, setting corresponding to described upper adjusting hole, and be fixedly connected on the top board of described main car frame; Described upper bracket be connected with described upper setting block and the two spacing adjustable; Upper adjustment part, is removable installed between described upper bracket and described upper setting block; Upper tight lock part, removably connects and locks described upper bracket and described upper setting block.
Second aspect, the embodiment of the present invention proposes a kind of lower vehicle frame clearance adjustment mechanism, and this lower vehicle frame clearance adjustment mechanism comprises: upper guiding mechanism, comprising: upper setting block, for the supporting leg that limits lower vehicle frame walker displacement upwards; Upper bracket, be connected with described upper setting block and the two spacing adjustable; Upper adjustment part, is removable installed between described upper bracket and described upper setting block; Upper tight lock part, for connecting and lock described upper bracket and described upper setting block; Lower guiding mechanism, comprising: lower adjustment block, for limiting the downward displacement of supporting leg of lower vehicle frame walker; Undersetting, for supporting lower adjustment block, the spacing of the thickness of described lower adjustment block and supporting leg and described undersetting adapts; Lower adjustment part, be connected with described undersetting and the two relative position adjustable, described lower adjustment part and described lower adjustment block butt; Lower tight lock part, for the relative position locking between described lower adjustment part and described undersetting.
With respect to prior art, the present invention has following advantage:
Can find out from the various embodiments described above, above-mentioned clearance adjustment mechanism makes lower vehicle frame have gap adjustment function, clearance adjustment mechanism arranges upper and lower two kinds of different guiding mechanisms, can adjust respectively the gap up and down of lower vehicle frame, make lower vehicle frame there is the adjustable function in gap, thereby use guiding mechanism can reduce the requirement to vehicle frame fit dimension in manufacture, ensureing under the prerequisite of clearance control, can significantly reduce difficulty of processing and cost, enhance productivity, and improve the stability of lower vehicle frame.
The third aspect, the embodiment of the present invention proposes a kind of engineering machinery, this project machinery has lower vehicle frame, described in get off to set up and be equipped with above-mentioned lower vehicle frame clearance adjustment mechanism described in any.Because above-mentioned any lower vehicle frame clearance adjustment mechanism has above-mentioned technique effect, therefore, the engineering machinery that is provided with this lower vehicle frame clearance adjustment mechanism also should possess corresponding technique effect, does not hereby repeat.
Brief description of the drawings
The accompanying drawing that forms a part for the embodiment of the present invention is used to provide the further understanding to the embodiment of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Vehicle frame schematic diagram under the inverted plug type rotary drilling rig that Fig. 1 provides for some embodiments of the invention;
The structural representation of the guiding mechanism that Fig. 2 provides for some embodiments of the invention.
Description of reference numerals
100 main car frames
Adjusting hole on 120
140 times adjusting holes
200 right walkers
300 left walkers
400 upper setting blocks
420 upper brackets
Adjustment part on 440
Tight lock part on 460
500 first times adjustment blocks
520 undersettings
540 times adjustment parts
560 times tight lock parts
600 second times adjustment blocks
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.
Below in conjunction with accompanying drawing, each optional embodiment of the present invention is described further:
With reference to Fig. 1, it shows the structure of vehicle frame under the inverted plug type rotary drilling rig that some embodiment provide.With reference to Fig. 2, it shows the structure of the guiding mechanism that some embodiment provide.
In one embodiment, open a kind of lower vehicle frame clearance adjustment mechanism, this lower vehicle frame clearance adjustment mechanism comprises guiding mechanism and lower guiding mechanism, wherein, upper guiding mechanism comprises: upper setting block 400, upper bracket 420, upper adjustment part 440 and upper tight lock part 460, upper setting block 400 is for the supporting leg that limits lower vehicle frame walker displacement upwards.Upper bracket 420 be connected with upper setting block 400 and the two spacing adjustable.Upper adjustment part 440 is removable installed between upper bracket 420 and upper setting block 400.Upper tight lock part 460 is for connecting and lock upper bracket 420 and upper setting block 400.
In addition, lower guiding mechanism comprises: lower adjustment block, undersetting 520, lower adjustment part 540 and lower tight lock part 560.Wherein, lower adjustment block is for limiting the downward displacement of supporting leg of lower vehicle frame walker.Undersetting 520, for supporting lower adjustment block, the spacing of the thickness of lower adjustment block and supporting leg and undersetting 520 adapts.Lower adjustment part 540 be connected with undersetting 520 and the two relative position adjustable, lower adjustment part 540 and lower adjustment block butt.The relative position of lower tight lock part 560 for locking between lower adjustment part 540 and undersetting 520.
It should be noted that, the supporting leg downside that upwards supports walker of lower adjustment block, downward and undersetting 520 butts, therefore, the thickness of lower adjustment block can be different, and its thickness can need to arrange according to the spacing of supporting leg and undersetting 520.
Like this, by controlling the distance between upper and lower guiding mechanism and the supporting leg of left and right walker, make lower vehicle frame there is the adjustable function in gap, thereby make its gap all the time in rational scope, make lower vehicle frame there is higher stability.In addition, use above-mentioned clearance adjustment mechanism to carry out gap adjustment, can reduce the requirement to vehicle frame fit dimension in manufacture, therefore, ensureing, under the prerequisite of clearance control, can significantly to reduce difficulty of processing and cost, enhance productivity.
In another embodiment, disclose a kind of structure of lower vehicle frame clearance adjustment mechanism, as depicted in figs. 1 and 2, this lower vehicle frame comprises main car frame 100, right walker 200 and left walker 300.Wherein, supporting leg and the main car frame 100 of right walker 200 and left walker 300 are pegged graft, and supporting leg is in the inner socket mutually of main car frame 100.This clearance adjustment mechanism comprises: upper guiding mechanism and lower guiding mechanism.Wherein, upper guiding mechanism is arranged at the upper adjusting hole 120 of offering on main car frame 100 top boards, and for the supporting leg socket place that limits right walker 200 and left walker 300 displacement upwards; Upper guiding mechanism is adjustable to the distance of the upside of supporting leg socket place.Lower guiding mechanism is used for being arranged at the lower adjusting hole 140 of offering on main car frame 100 base plates, and for limiting the downward displacement of supporting leg of right walker 200 and left walker 300; The spacing of the supporting leg of lower guiding mechanism and right walker 200 and left walker 300 is adjustable.
In above-described embodiment, at main car frame, upper and lower guiding mechanism is set, by controlling the distance between upper and lower guiding mechanism and left and right walker supporting leg, makes lower vehicle frame there is the adjustable function in gap, thereby make its gap all the time in rational scope, make lower vehicle frame there is higher stability.
In addition, gap adjustment process can be carried out in the time producing assembling or repair and maintenance, and gap adjustment in process of production can be carried out before weldering, is not in postwelding process, to adjust gap.Therefore, use above-mentioned clearance adjustment mechanism can reduce the requirement to vehicle frame fit dimension in manufacture, ensureing, under the prerequisite of clearance control, can significantly to reduce difficulty of processing and cost, enhance productivity.
In certain embodiments, as shown in Figure 2, upper adjusting hole 120 is positioned at the middle part of main car frame 100 top boards, and correspondence is arranged at the initial position that the supporting leg of right walker 200 and left walker 300 is socketed mutually, i.e. the socket place of the supporting leg of right walker 200 and left walker 300 after stretching out completely.
In certain embodiments, as shown in Figure 2, lower adjusting hole 140 is the corresponding supporting leg slideway bottom that is arranged at right walker 200 and left walker 300 respectively.
In certain embodiments, as shown in Figure 2, upper guiding mechanism comprises: upper setting block 400, upper bracket 420, upper adjustment part 440 and upper tight lock part 460.Wherein, upper setting block 400 is embedded at adjusting hole 120, and for the supporting leg socket place that limits right walker 200 and left walker 300 displacement upwards.Upper bracket 420 setting corresponding to upper adjusting hole 120, and be fixedly connected on the top board of main car frame 100.Upper bracket 420 be connected with upper setting block 400 and the two spacing adjustable.Upper adjustment part 440 is removable installed between upper bracket 420 and upper setting block 400.Upper tight lock part 460 is for connecting and lock upper bracket 420 and upper setting block 400.
For example, two upper setting blocks are set at the top of main car frame, the right walker supporting leg that is positioned at right walker one side is greater than left side, and left walker leg sleeve accesses among right walker supporting leg, goes up adjustment part and adjusts side clearance on itself and right walker as pad by increasing or reducing.
In certain embodiments, lower guiding mechanism comprises: first time guiding mechanism and second time guiding mechanism.Wherein, first time guiding mechanism is arranged at the lower adjusting hole 140 that main car frame 100 left-side bottom are offered, for limiting the downward displacement of left walker 300.Second time guiding mechanism is arranged at the lower adjusting hole 140 that main car frame 100 right side base plates are offered, for limiting the downward displacement of right walker 200.
In above-described embodiment, first time guiding mechanism comprises: first time adjustment block 500, undersetting 520, lower adjustment part 540 and lower tight lock part 560.Wherein, first time adjustment block 500 is embedded at lower adjusting hole 140, and for limiting the downward displacement of supporting leg of left walker 300.Undersetting 520 setting corresponding to lower adjusting hole 140, and be fixedly connected on the base plate of main car frame 100.Lower adjustment part 540 be connected with undersetting 520 and the two relative position adjustable, lower adjustment part 540 and first time adjustment block 500 butt.Lower tight lock part 560, for lower adjustment part 540 and the undersetting 520 of locking, makes it keep relative position constant.
In certain embodiments, as shown in Figure 2, lower adjustment part 540 is bolt, and lower tight lock part 560 is the nut coordinating with bolt.
In certain embodiments, the quantity of first time adjustment block 500 is two, lays respectively between the slideway and undersetting 520 of left walker 300.The spacing of the thickness of first time adjustment block 500 and left walker 300 and undersetting 520 adapts.
In above-described embodiment, the structure of second time guiding mechanism and first time guiding mechanism is basic identical, and for example, second time guiding mechanism comprises: second time adjustment block 600, undersetting 520, lower adjustment part 540 and lower tight lock part 560.Wherein, the quantity of second time adjustment block 600 of second time guiding mechanism is two, lays respectively between right walker 200 and undersetting 520.The thickness of second time adjustment block 600 and right walker 200 adapt with the spacing of undersetting.
For example, near the position of lower adjusting hole, four lower adjustment blocks are set in the bottom of main car frame, the length screwing in by bolt is controlled the gap of lower adjustment block and left and right walker supporting leg downside, after having adjusted by nut check.This adjustment programme can carry out in the time producing assembling or repair and maintenance, to ensure under inverted plug type rotary drilling rig that vehicle frame gap is all the time in rational scope.
And for example, situation about varying in size for left and right walker supporting leg, in the time that right walker 200 and left walker 300 are plugged in main car frame 100, in the reserved upper setting block of main car frame 100 top boards hole 120, and welds upper bracket 420.In the reserved lower adjustment block of main car frame 100 base plates hole 140, and weld undersetting 520.Lower adjustment block 500,600 is put into respectively to main car frame base plate right side and left hole, because left and right walker supporting leg varies in size, so two kinds of lower adjustment block height differences.
Wherein, for lower guiding mechanism, lower adjustment part 540 can adopt bolt, and lower tight lock part 560 can adopt nut.Herein, the method for adjustment of lower adjustment block can be: on undersetting 520, pack bolt into and tighten, and the identical number of turns of subsequently each bolt being reversed, this number of turns can be calculated and specify according to the preset clearance between adjustment block and supporting leg.With nut check, successively 4 lower adjustment blocks are carried out to same operation.
In addition, for upper guiding mechanism, upper adjustment part 440 can adopt adjustment pad, and upper tight lock part 460 can adopt bolt.Herein, upper setting block 400 methods of adjustment can be: measure right walker 200 supporting leg upper surfaces to upper bracket 420 upper surface distances, judge the quantity of the adjustment pad needing, reinstall upper setting block 400, and place the pad of some, pack bolt into and tighten.
Can find out from the various embodiments described above, above-mentioned clearance adjustment mechanism makes lower vehicle frame have gap adjustment function, taking vehicle frame under inverted plug type rotary drilling rig as example, clearance adjustment mechanism arranges upper and lower two kinds of different guiding mechanisms, can adjust respectively the gap up and down of lower vehicle frame, make vehicle frame under inverted plug type rotary drilling rig there is the adjustable function in gap.Use guiding mechanism can reduce the requirement to vehicle frame fit dimension in manufacture, ensureing, under the prerequisite of clearance control, can significantly to reduce difficulty of processing and cost, enhance productivity, and improve the stability of lower vehicle frame.In addition, this adjustment process can be carried out in the time producing assembling or repair and maintenance, to ensure under inverted plug type rotary drilling rig that vehicle frame gap is all the time in rational scope.
The embodiment of the present invention also provides a kind of engineering machinery, include but not limited to rotary drilling rig, this project machinery is provided with above-mentioned any lower vehicle frame clearance adjustment mechanism, because above-mentioned any lower vehicle frame clearance adjustment mechanism has above-mentioned technique effect, therefore, the engineering machinery that is provided with this lower vehicle frame clearance adjustment mechanism also should possess corresponding technique effect, for example, the inverted plug type rotary drilling rig that is provided with clearance adjustment mechanism is got off, ensureing under the prerequisite of clearance control, difficulty of processing can significantly be reduced, with Promote Competitive.Its specific implementation process is similar to the above embodiments, does not hereby repeat.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a lower vehicle frame clearance adjustment mechanism, it is characterized in that, described lower vehicle frame comprises main car frame (100), right walker (200) and left walker (300), the supporting leg of described right walker (200) and left walker (300) is plugged in described main car frame (100), and described supporting leg is socketed mutually in main car frame (100) inside; Described clearance adjustment mechanism comprises:
Upper guiding mechanism, be used for being arranged at the upper adjusting hole (120) of offering on described main car frame (100) top board, and for the supporting leg socket place that limits described right walker (200) and left walker (300) displacement upwards; The spacing of described upper guiding mechanism and described supporting leg socket place is adjustable;
Lower guiding mechanism, be used for being arranged at the lower adjusting hole (140) of offering on described main car frame (100) base plate, and for limiting the downward displacement of supporting leg of described right walker (200) and left walker (300); The spacing of the supporting leg of described lower guiding mechanism and described right walker (200) and left walker (300) is adjustable.
2. lower vehicle frame clearance adjustment mechanism according to claim 1, it is characterized in that, described upper adjusting hole (120) is positioned at the middle part of described main car frame (100) top board, and correspondence is arranged at the initial position that the supporting leg of described right walker (200) and left walker (300) is socketed mutually.
3. lower vehicle frame clearance adjustment mechanism according to claim 1, is characterized in that, described lower adjusting hole (140) respectively correspondence is arranged at the supporting leg slideway bottom of described right walker (200) and left walker (300).
4. lower vehicle frame clearance adjustment mechanism according to claim 3, is characterized in that, described lower guiding mechanism comprises:
First time guiding mechanism, is arranged at the lower adjusting hole (140) that described main car frame (100) left-side bottom is offered, for limiting the downward displacement of supporting leg of described left walker (300);
Second time guiding mechanism, is arranged at the lower adjusting hole (140) that described main car frame (100) right side base plate is offered, for limiting the downward displacement of supporting leg of described right walker (200).
5. lower vehicle frame clearance adjustment mechanism according to claim 4, is characterized in that, described first time guiding mechanism comprises:
First time adjustment block (500), for being embedded at described lower adjusting hole (140);
Undersetting (520), setting corresponding to described lower adjusting hole (140), and be fixedly connected on the base plate of described main car frame (100);
Lower adjustment part (540), be connected with described undersetting (520) and the two relative position adjustable, described lower adjustment part (540) and described first time adjustment block (500) butt;
Lower tight lock part (560), for described lower adjustment part (540) and the described undersetting (520) of locking, makes it keep relative position constant.
6. lower vehicle frame clearance adjustment mechanism according to claim 5, it is characterized in that, the quantity of described first time adjustment block (500) is two, lays respectively between the slideway and described undersetting (520) of described left walker (300); The spacing of the thickness of described first time adjustment block (500) and described left walker (300) and described undersetting (520) adapts.
7. lower vehicle frame clearance adjustment mechanism according to claim 6, is characterized in that, described second time guiding mechanism is identical with the structure of described first time guiding mechanism; Wherein, the quantity of second time adjustment block (600) of described second time guiding mechanism is two, lays respectively between described right walker (200) and described undersetting (520); The spacing of the thickness of described second time adjustment block (600) and described right walker (200) downside and described undersetting adapts.
8. according to the lower vehicle frame clearance adjustment mechanism described in claim 1 to 7 any one, it is characterized in that, described upper guiding mechanism comprises:
Upper setting block (400), for being embedded at described upper adjusting hole (120);
Upper bracket (420), setting corresponding to described upper adjusting hole (120), and be fixedly connected on the top board of described main car frame (100); Described upper bracket (420) be connected with described upper setting block (400) and the two spacing adjustable;
Upper adjustment part (440), is removable installed between described upper bracket (420) and described upper setting block (400);
Upper tight lock part (460), is removably connected to and lock described upper bracket (420) and described upper setting block (400).
9. a lower vehicle frame clearance adjustment mechanism, is characterized in that, comprising:
Upper guiding mechanism, comprising:
Upper setting block (400), for the supporting leg that limits lower vehicle frame walker displacement upwards;
Upper bracket (420), be connected with described upper setting block (400) and the two spacing adjustable;
Upper adjustment part (440), is removable installed between described upper bracket (420) and described upper setting block (400);
Upper tight lock part (460), for connecting and lock described upper bracket (420) and described upper setting block (400);
Lower guiding mechanism, comprising:
Lower adjustment block, for limiting the downward displacement of supporting leg of lower vehicle frame walker;
Undersetting (520), for supporting lower adjustment block, the spacing of the thickness of described lower adjustment block and supporting leg and described undersetting (520) adapts;
Lower adjustment part (540), be connected with described undersetting (520) and the two relative position adjustable, described lower adjustment part (540) and described lower adjustment block butt;
Lower tight lock part (560), for the relative position locking between described lower adjustment part (540) and described undersetting (520).
10. an engineering machinery, is characterized in that, has lower vehicle frame, described in get off and set up the lower vehicle frame clearance adjustment mechanism being equipped with described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205376.6A CN103953287B (en) | 2014-05-15 | 2014-05-15 | Gap adjustment mechanism for lower frame and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410205376.6A CN103953287B (en) | 2014-05-15 | 2014-05-15 | Gap adjustment mechanism for lower frame and engineering machinery |
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| Publication Number | Publication Date |
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| CN103953287A true CN103953287A (en) | 2014-07-30 |
| CN103953287B CN103953287B (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410205376.6A Expired - Fee Related CN103953287B (en) | 2014-05-15 | 2014-05-15 | Gap adjustment mechanism for lower frame and engineering machinery |
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| CN105711665A (en) * | 2016-05-11 | 2016-06-29 | 徐工集团工程机械股份有限公司 | Horizontal clearance adjustment device for crawler base |
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| Publication number | Publication date |
|---|---|
| CN103953287B (en) | 2017-02-15 |
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