CN111645770B - Excavator drags sprocket and mount pad structure assembly - Google Patents
Excavator drags sprocket and mount pad structure assembly Download PDFInfo
- Publication number
- CN111645770B CN111645770B CN202010601689.9A CN202010601689A CN111645770B CN 111645770 B CN111645770 B CN 111645770B CN 202010601689 A CN202010601689 A CN 202010601689A CN 111645770 B CN111645770 B CN 111645770B
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- chain wheel
- drag chain
- towing
- connecting seat
- bearing bush
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/30—Track-tensioning means
- B62D55/305—Track-tensioning means acting on pivotably mounted idlers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
- B62D55/0847—Track blocking devices mounted on the frame; Track guides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The utility model discloses an excavator drag chain wheel and mounting seat structure assembly, which comprises a drag chain wheel and a drag chain wheel mounting seat, wherein the drag chain wheel comprises a drag chain shaft, a left half drag chain wheel body and a right half drag chain wheel body which are arranged on the drag chain shaft, and the structure assembly also comprises: the connecting seat is provided with a towing chain shaft mounting hole, a towing chain shaft of the towing chain wheel penetrates into the towing chain shaft mounting hole of the connecting seat, and the connecting seat is provided with a bolt mounting hole; the upper end face of the towing chain wheel mounting seat is provided with a threaded hole, and the threaded holes of the connecting seat and the threaded hole of the towing chain wheel mounting seat are sequentially filled with fastening bolts, namely the connecting seat is fastened and connected with the towing chain wheel mounting seat by the fastening bolts. The utility model has the advantages of simplified structure, obvious cost reduction, convenient processing, easy assembly and overall improvement of comprehensive mechanical properties. The excavator dragging chain wheel and mounting seat structure assembly is mainly used for supporting the upper crawler belt to prevent the upper crawler belt from sagging, and meanwhile, the auxiliary crawler belt assembly moves along a set movement track.
Description
Technical Field
The utility model relates to the technical field of excavator drag chain wheels, in particular to an excavator drag chain wheel and mounting seat structure assembly.
Background
Along with the rapid development of the excavator industry, the structure assembly of the towing chain wheel and the mounting seat is more and more diversified, the structure of the structure assembly of the towing chain wheel and the mounting seat of the excavator in the prior art is complex, the bolt fastening is inconvenient, the utilization rate of raw materials is low, the processing difficulty period is long, the cost is high, the assembly adjustment amount of the whole structure is large, the novel design of the whole structure and the mounting mode is needed, and the aims of facilitating the machining, the assembly, the light weight of the structure and the improvement of the durability are fulfilled.
The prior art excavator towing sprocket and mounting seat structure assembly is shown in fig. 1, and consists of a crawler frame welding piece 101, a towing sprocket mounting seat 102, a gasket 103, a fastening bolt 104, a towing sprocket 105 and a steel crawler assembly 106. The drag chain wheel 105 is mounted in the drag chain wheel mounting seat 102, the position is adjusted according to the required size, and the drag chain wheel is fastened by the fastening bolt 104 and the washer 103.
The prior art excavator drag chain wheel mounting seat and structure are shown in fig. 2 and 3, after the piece is blanked by a Q345C steel plate, machining treatment is carried out, 4 holes (2 holes) are drilled, the threaded holes 5 are drilled and tapped, and the plane 1, the plane 2, the boring holes 3 and the milling grooves 6 are planed and milled. The machining process of the workpiece is complex, the machining period is long, the manufacturing cost is high, about 35 workpieces of D grooves are milled on each saw blade, the groove milling efficiency is low, and the consumption of the saw blade is high. The dimensional tolerance of the hole 3 is strict, the hole needs to be carefully controlled, otherwise, the screwing torque of the fastening bolt 104 reaches a specified value, the inner diameter of the hole 3 is not contracted in place, the main shaft 201 of the towing chain wheel 105 cannot be completely fastened, the towing chain wheel 105 is caused to transversely move back and forth, the abrasion between the towing chain wheel 105 and the steel track assembly 106 is accelerated, and the service life of the steel track assembly is greatly shortened.
The prior art excavator drag chain wheel structure is shown in fig. 4, and comprises a drag wheel shaft 201, a cone rolling bearing 202, a drag wheel body 203 and an end cover 204. Wherein the cone rolling bearing 202 is assembled on the tug axle 201, and is mainly used for supporting the tug body 203 and keeping the tug body 203 rotating normally. The towing wheel body 203 has large diameter size of the tread 7, heavy wheel body, more raw materials, 2 split forgings are welded by adopting manual CO2 gas shielded welding, and the towing wheel body is low in production efficiency and large in thermal deformation, wherein the dimensional tolerance of the part where the cone rolling bearing 202 is arranged needs to be strictly controlled, and the processing cost is relatively high. Furthermore, the conical rolling bearing 202 is a precision component, which is relatively expensive to purchase.
Publication (bulletin) number: CN206617533U, publication (date): 2017-11-07 discloses a drag chain wheel of an excavator, which comprises a wheel body and a shaft, wherein a floating seal seat is arranged on one side of the wheel body, a floating seal ring is arranged at the bottom of the floating seal seat, an elastic steel ring for the shaft is arranged on one side of an O-shaped ring, the wheel body is fixedly connected with the floating seal seat through the floating seal ring and the floating seal ring, a baffle is arranged at the other end of the shaft, a first spring washer is arranged on one side of the baffle, and a first hexagon head bolt is arranged on one side of the first spring washer. This excavator drags sprocket, the end cover passes through second hexagon head bolt and second spring washer and wheel body fixed connection, can dismantle the end cover through second hexagon head bolt and second spring washer, can see first spring washer and first hexagon head bolt after the end cover is opened, and first spring washer and first hexagon head bolt are axle and wheel body fixed connection device, can dismantle axle and wheel body through first spring washer and first hexagon head bolt, realize the convenient change of axle and wheel body to increase the life who drags the sprocket.
Publication (bulletin) number: CN203005596U, publication (date): 2013-06-19 discloses a crawler anti-loosening drag chain wheel support mechanism of an excavator, which belongs to the technical field of engineering machinery and comprises a drag chain wheel, a fixed support, a gasket, an adjusting bolt, a spring, an adjusting block, a movable support and a drag chain wheel support shaft. According to the utility model, under the condition that the excavator is insufficient in butter, the fixed support is loosened by arranging the adjusting bolts in the structure, the adjusting blocks are used for positioning, the height of the fixed support is adjusted under the action of external force, and the fixed support drives the towing wheel, so that the height of the whole towing wheel support is changed, the tensioning of the crawler belt is realized, the condition that the crawler belt of the excavator is loosened and falls off is ensured, and the normal work of the excavator is further ensured.
The technical scheme, the technical problems to be solved and the generated beneficial effects of the disclosed technology are different from those of the utility model, or the technical field or application occasion is different, and the technical documents disclosed above have no technical teaching aiming at more technical features, the technical problems to be solved and the beneficial effects of the utility model.
Disclosure of Invention
The utility model aims to provide the structure assembly of the dragging chain wheel and the mounting seat of the excavator, which aims at the defects in the prior art, and has the advantages of simplified structure, obvious cost reduction, convenience in processing, easiness in assembly and overall improvement of comprehensive mechanical properties. The excavator dragging chain wheel and mounting seat structure assembly is mainly used for supporting the upper crawler belt to prevent the upper crawler belt from sagging, and meanwhile, the auxiliary crawler belt assembly moves along a set movement track.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an excavator drags sprocket and mount pad structure assembly, includes drags sprocket, towline sprocket mount pad, the towline wheel includes dragline chain axle and installs at dragline chain epaxial half left towline wheel body, half right towline wheel body, still includes:
the connecting seat is provided with a towing chain shaft mounting hole, a towing chain shaft of the towing chain wheel is assembled in the towing chain shaft mounting hole of the connecting seat, and the connecting seat is also provided with a bolt mounting hole; screw holes are formed in the upper end face of the towing chain wheel mounting seat, and the screw holes are sequentially formed in the screw mounting holes of the connecting seat and the screw holes of the towing chain wheel mounting seat through fastening bolts, namely the connecting seat is fastened and connected with the towing chain wheel mounting seat through the fastening bolts.
Further, four bolt mounting holes are formed, and corresponding four threaded holes are also formed.
Further, the method further comprises the following steps:
the left bearing bush is arranged on the drag chain shaft, and the left half drag chain wheel body is arranged outside the left bearing bush;
the right bearing bush is arranged on the drag chain shaft, and the right half drag chain wheel body is arranged outside the right bearing bush.
Further, the tug axle is in interference fit with the connecting seat, the left bearing bush and the right bearing bush are in clearance fit with the tug axle, and relative movement exists between the left bearing bush and the right bearing bush. Two metal sealing rings are arranged between the connecting seat and the left half drag chain wheel body, the left sealing ring is fixed on the connecting seat, the right sealing ring is fixed on the left half drag chain wheel body, and the contact surfaces of the two side sealing rings move in a relative friction manner. The O-shaped sealing rings are arranged outside the two metal sealing rings, and meanwhile, the O-shaped sealing rings are arranged at the outer ends of the right bearing bushes, so that the lubricating oil inside the whole drag chain wheel body is prevented from leaking outwards, and sundries such as dust outside the drag chain wheel body enter the drag chain wheel body.
Further, the left half drag chain wheel body and the right half drag chain wheel body are welded into a whole in a friction welding mode.
Compared with the prior art, the utility model has the following beneficial effects:
the excavator drag chain wheel and mounting seat structure assembly is mainly used for supporting the track assembly, preventing sagging, assisting the track assembly to move according to the set motion trail, and meanwhile, the requirements on the aspects of overall structure, light weight, mounting mode and the like are higher, the structure is more reasonable, the mechanical processing is convenient, the cost is reduced, the durability is improved, and the assembly is easy.
The mounting seat and the drag chain wheel structure are lighter, the mechanical processing is very convenient, the cost of raw materials and mechanical processing auxiliary materials is greatly reduced, the whole structure is easy to assemble, the structure is reasonable and compact, the whole performance is improved, and the like.
The novel towing sprocket and mounting seat structure is designed in a way of great innovation and light weight on the basis of the prior art towing sprocket mounting seat structure. The mounting seat is easy to machine, the manufacturing cost is saved, the processing period is shortened, and the towing chain wheel is easy to mount. The inner rolling bearing of the dragging chain wheel is improved into a bearing bush (sliding bearing), the sizes of the supporting wheel body and the tread are relatively reduced, steel raw materials are saved, and the mechanical processing is convenient; the friction welding is adopted to replace manual CO2 gas shielded welding for the towing wheel body structure assembly, so that the welding thermal deformation is reduced, the durability is improved, the service life period is prolonged, and the production efficiency is greatly improved.
Drawings
FIG. 1 is a schematic view of a prior art excavator drag sprocket and mount structure assembly;
FIG. 2 is a schematic illustration of a prior art excavator drag chain wheel mount;
FIG. 3 is an E-direction view of FIG. 2;
FIG. 4 is a schematic diagram of a prior art excavator drag chain wheel construction;
FIG. 5 is a schematic view of an excavator drag sprocket and mount pad assembly according to the present utility model;
FIG. 6 is a schematic view of a drag chain wheel mount for an excavator according to the present utility model;
FIG. 7 is a view in the direction A of FIG. 6;
FIG. 8 is a schematic view of a drag chain wheel structure for an excavator according to the present utility model;
fig. 9 is a left side view of fig. 8.
In the figure: 101. track frame weldment; 102. a drag chain wheel mounting seat; 103. a gasket; 104. a fastening bolt; 105. a drag chain wheel; 106. a steel track assembly;
1. a plane; 2. a plane; 3. a hole; 4. a hole; 5. a threaded hole; 6. a groove; 7. a tread of the tug body; 8. a towing wheel body welded part; 9. a plane; 10. screw holes, 12 and the welding part of the towing chain wheel body;
201. a trailing axle; 202 cone rolling bearings; 203. a towing wheel body; 204 end caps;
301. track frame weldment; 302. a drag chain wheel mounting seat; 303. a gasket; 304. a fastening bolt; 305. a drag chain wheel; 306. a steel track assembly;
401. a trailing axle; 402. a left bearing bush; 403. a drag chain wheel body; 404. a right bearing bush; 405. and a connecting seat.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1 to 9, the present utility model provides a technical solution:
the utility model provides an excavator drags sprocket and mount pad structure assembly, includes dragline sprocket 305, dragline sprocket mount pad 302, the dragline sprocket includes dragline axle 401 and installs half left dragline sprocket body, half right dragline sprocket body on dragline axle 401, still includes:
a connecting seat 405, wherein the connecting seat is provided with a towing chain shaft mounting hole, a towing chain shaft 401 of a towing chain wheel is assembled in the towing chain shaft mounting hole of the towing chain wheel mounting seat 302, and the connecting seat 405 is provided with four bolt mounting holes; four threaded holes are formed in the upper end face of the towing chain wheel mounting seat 302, and fastening bolts are sequentially arranged in the bolt mounting holes of the connecting seat 405 and the threaded holes of the towing chain wheel mounting seat 302, namely, the connecting seat 405 and the towing chain wheel mounting seat 302 are fixedly connected through the fastening bolts.
Further, the number of the bolt mounting holes is four, and the number of the threaded holes is correspondingly four.
Further, the method further comprises the following steps:
the left bearing bush 402 is assembled on the drag chain shaft 401, and the left half drag chain wheel body sleeve is assembled outside the left bearing bush 402;
the right bearing bush 405 is assembled on the drag chain shaft 401, and the right half drag chain wheel body sleeve is assembled outside the right bearing bush 405.
Further, the tug axle 401 is in interference fit with the connection seat 405, and the left bearing bush 402, the right bearing bush 405 and the tug axle 401 are in clearance fit, so that relative movement exists between the left bearing bush 402 and the right bearing bush 405. Two metal sealing rings are arranged between the connecting seat 405 and the left half drag chain wheel body, the left sealing ring is fixed on the connecting seat 405, the right sealing ring is fixed on the drag chain wheel body 403, and relative friction movement is carried out between contact surfaces of the two side sealing rings. The O-shaped sealing rings are arranged outside the two metal sealing rings, and meanwhile, the O-shaped sealing rings are arranged at the outer ends of the right bearing bushes, so that the lubricating oil inside the whole drag chain wheel body 403 is ensured not to leak outwards, and sundries such as dust outside the drag chain wheel body 403 enter the drag chain wheel body 403.
Further, the left half drag chain wheel body and the right half drag chain wheel body are welded into a whole in a friction welding mode.
The utility model relates to a novel towing wheel and mounting seat structure assembly, which mainly comprises a towing wheel mounting seat 302 and a towing wheel 305, and particularly comprises a crawler frame welding piece 301, the towing wheel mounting seat 302, a gasket 303, a fastening bolt 304, the towing wheel 305 and a steel crawler assembly 306 as shown in fig. 5. The drag chain wheel 305 is directly arranged on the drag chain wheel mounting seat 302, alignment adjustment is not needed, the drag chain wheel is fixed by the fastening bolt 304 and the washer 303, and the assembly is convenient.
The drag chain wheel mounting seat has the structure that only a plane 9 is required to be planed and milled for mounting the drag chain wheel 305, and a threaded hole 10 (4 groups) is drilled and machined for fixing the drag chain wheel 305 by fastening bolts 304, as shown in fig. 6 and 7. This construction is very convenient for machining relative to the existing drag chain wheel mount 102, is lightweight, and saves steel raw materials and a large amount of blade and saw blade consumption. The total processing cost and raw materials of the drag chain wheel mounting seat 102 are greatly reduced compared with those of the existing drag chain wheel mounting seat 102, and the cost is reduced by about 210 elements/piece (4 pieces/table).
The structure of the drag chain wheel of the utility model is shown in fig. 8 and 9, and specifically comprises a drag wheel shaft 401, a left bearing bush 402, a drag chain wheel body 403, a right bearing bush 404 and a connecting seat 405. The left bearing bush 402 and the right bearing bush 404 are assembled in the inner hole of the drag chain wheel body 403, have the same function as a cone rolling bearing used in the existing drag chain wheel structure, are made of lead-tin-copper alloy and steel plates by sintering, have high durability and are far lower than the cone rolling bearing in price cost, support the drag chain wheel body 403 and keep the drag chain wheel body 403 to rotate normally. The drag sprocket wheel body 403 is formed by 1 half drag sprocket wheel body forging on the left and right, the diameter size of the tread 11 of the riding wheel body is smaller than the diameter size of the tread 7 of the drag sprocket wheel body in the existing drag sprocket wheel structure by about 20mm, the drag sprocket wheel body 403 is welded by adopting a friction welding mode, the production efficiency is improved by several times compared with that of manual CO2 gas shielded welding, the welding fusion is good, the integral welding thermal deformation is small, the integral welding thermal deformation is exquisite and durable, the comprehensive mechanical property is high, and the integral cost of the drag sprocket wheel structure is greatly reduced, and compared with the existing drag sprocket wheel, the novel drag sprocket wheel is reduced by about 130 yuan/piece.
The advantages of the utility model are as follows:
(1) Compared with the existing drag chain wheel mounting seat, the novel drag chain wheel mounting seat is very convenient to process, greatly reduces the total processing cost and the raw material cost, and has extremely obvious effect. The steel raw material is saved by 4 kg/piece, and the total cost (material, labor and cutter consumption) is about 210 yuan/piece (4 pieces/table).
(2) The novel tug body is formed by friction welding, and compared with the conventional tug body which adopts manual CO2 gas shielded welding, the novel tug body has the advantages of good molding and fusion, small thermal deformation, multiple times of production efficiency improvement and stable quality performance. The novel towing wheel body tread 11 has the diameter size which is 20mm smaller than that of the existing towing wheel body tread 7, and the overall weight is reduced by 3 kg/piece. The existing tug body is provided with a cone rolling bearing, the tolerance requirement is strict, and the processing cost is relatively high. The novel tug body is provided with the sliding bearing (bearing bush) so as to facilitate processing, and the processing cost is obviously reduced.
(3) The novel drag chain wheel adopts the bearing bush (sliding bearing) to replace the conical rolling bearing, so that the purchase cost is greatly reduced, the durability is further greatly improved, and the whole structure is compact.
(4) Compared with the existing drag chain wheel, the novel drag chain wheel has the advantages that the cost is greatly reduced, and the cost is saved by about 130 elements/piece.
The utility model is very practical and simple, is a new trend of the structure assembly of the towing sprocket and the mounting seat, and compared with the structure assembly of the novel towing sprocket and the mounting seat in the prior art, the structure assembly of the novel towing sprocket and the mounting seat has the advantages that the material and the processing cost (manual and cutter) are greatly reduced, the integral performance is greatly improved, the structure is reasonable and compact, the rapid assembly and the disassembly are convenient, and the utility model has wide popularization and utilization values.
Example 2:
referring to fig. 1 to 9, the present utility model provides a technical solution:
the utility model provides an excavator drags sprocket and mount pad structure assembly, includes dragline sprocket 305, dragline sprocket mount pad 302, the dragline sprocket includes dragline axle 401 and installs half left dragline sprocket body, half right dragline sprocket body on dragline axle 401, still includes:
the connecting seat 405, wherein the connecting seat 405 is provided with a mounting hole, the drag chain shaft 401 of the drag chain wheel 306 is assembled in the mounting hole of the connecting seat, and the connecting seat 405 is provided with a bolt mounting hole; the upper end surface of the towing chain wheel mounting seat 302 is provided with a threaded hole, and the fastening bolts 304 are sequentially arranged into bolt holes of the connecting seat 405 and the threaded holes of the towing chain wheel mounting seat 302, namely, the connecting seat 405 and the towing chain wheel mounting seat 302 are fixedly connected by the fastening bolts.
Further, the number of the bolt mounting holes is four, and the number of the threaded holes is correspondingly four.
Further, the method further comprises the following steps:
the left bearing bush is sleeved on the drag chain shaft 401, and the left half drag chain wheel body is sleeved outside the left bearing bush;
the right bearing bush is sleeved on the drag chain shaft 401, and the right half drag chain wheel body is sleeved outside the right bearing bush.
Although all of the above embodiments use fig. 1 to 9, it will be apparent to those skilled in the art that a separate drawing is not provided to illustrate the embodiments, as long as the missing components or structural features are removed from the drawing. As will be clear to a person skilled in the art. Of course, the more components of the embodiment are just the optimal embodiment, the fewer components of the embodiment are basic embodiments, but the basic object of the utility model can be achieved, so all the modified embodiments are within the protection scope of the utility model.
In this application, all parts which are not discussed are known in the art, and the connection manner of all parts in this application is not described in detail. Such as welding, threaded connections, etc.
In the present utility model, the term "plurality" means two or more, unless explicitly defined 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; "coupled" may be directly coupled or indirectly coupled through intermediaries. 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.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (1)
1. The utility model provides an excavator drags sprocket and mount pad structure assembly, including draging sprocket, towline wheel mount pad, the towline wheel includes dragline axle and installs at dragline epaxial half left towline wheel body, half right towline wheel body, its characterized in that includes: the connecting seat is provided with a towing chain shaft mounting hole, a towing chain shaft of the towing chain wheel is assembled in the towing chain shaft mounting hole of the connecting seat, and the connecting seat is also provided with a bolt mounting hole; the upper end surface of the towing chain wheel mounting seat is provided with a threaded hole, and the threaded hole is sequentially assembled in the bolt mounting hole of the connecting seat and the threaded hole of the towing chain wheel mounting seat by using a fastening bolt, namely the connecting seat is fastened and connected with the towing chain wheel mounting seat by using the fastening bolt; the connecting seat is provided with four bolt mounting holes, and the drag chain wheel mounting seat is also provided with four corresponding threaded holes; further comprises:
the left bearing bush is arranged on the drag chain shaft, and the left half drag chain wheel body is arranged outside the left bearing bush; the right bearing bush is arranged on the drag chain shaft, and the right half drag chain wheel body is arranged outside the right bearing bush;
the connecting seat is in interference fit with the towing wheel shaft, the left bearing bush and the right bearing bush are in clearance fit with the towing wheel shaft, and relative movement exists between the left bearing bush and the right bearing bush; a left metal sealing ring and a right metal sealing ring are arranged between the connecting seat and the left half drag chain wheel body, wherein the left sealing ring is fixed on the connecting seat, the right sealing ring is fixed on the left half drag chain wheel body, and the contact surfaces of the two side sealing rings move in a relative friction manner; the outer parts of the two metal sealing rings are provided with O-shaped sealing rings, and the outer end of the right bearing bush is provided with an O-shaped sealing ring; the left half drag chain wheel body and the right half drag chain wheel body are welded into a whole in a friction welding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010601689.9A CN111645770B (en) | 2020-06-28 | 2020-06-28 | Excavator drags sprocket and mount pad structure assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010601689.9A CN111645770B (en) | 2020-06-28 | 2020-06-28 | Excavator drags sprocket and mount pad structure assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111645770A CN111645770A (en) | 2020-09-11 |
| CN111645770B true CN111645770B (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010601689.9A Active CN111645770B (en) | 2020-06-28 | 2020-06-28 | Excavator drags sprocket and mount pad structure assembly |
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| Country | Link |
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| CN (1) | CN111645770B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112407080A (en) * | 2020-11-19 | 2021-02-26 | 榆林学院 | Walking device of rotary drilling rig |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203005596U (en) * | 2012-12-26 | 2013-06-19 | 徐州徐工挖掘机械有限公司 | Excavator crawler belt anti-loosing drag chain wheel support mechanism |
| CN104443091A (en) * | 2014-11-28 | 2015-03-25 | 中联重机股份有限公司 | Supporting chain wheel for track-laying vehicle |
| CN206598903U (en) * | 2017-03-31 | 2017-10-31 | 湖北中特工程机械有限公司 | A kind of thrust wheel of digging machine |
| CN206617533U (en) * | 2017-03-31 | 2017-11-07 | 湖北中特工程机械有限公司 | A kind of excavator sprocket wheel |
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2020
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| CN111645770A (en) | 2020-09-11 |
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