CN203795503U - Reinforced chassis of excavator - Google Patents

Reinforced chassis of excavator Download PDF

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Publication number
CN203795503U
CN203795503U CN201420067038.6U CN201420067038U CN203795503U CN 203795503 U CN203795503 U CN 203795503U CN 201420067038 U CN201420067038 U CN 201420067038U CN 203795503 U CN203795503 U CN 203795503U
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CN
China
Prior art keywords
frame
track frame
chassis
wheel
gusset
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420067038.6U
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Chinese (zh)
Inventor
胡学军
潘光林
汪辉
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Chery Heavy Industry Co Ltd
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Chery Heavy Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to CN201420067038.6U priority Critical patent/CN203795503U/en
Application granted granted Critical
Publication of CN203795503U publication Critical patent/CN203795503U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a reinforced chassis of an excavator. The reinforced chassis of the excavator comprises a lower vehicle frame, wherein track frames are arranged on two sides of the lower vehicle frame respectively, one end of each track frame is provided with a motor seat, the other end of each track frame is provided with a guide wheel seat, each motor seat is provided with a driving wheel, each driving wheel is connected with a walking motor which provides power for the corresponding driving wheel, and a guide wheel is arranged on each guide wheel seat. A dragging wheel is installed on each track frame, nine supporting wheels are arranged on the bottom surface of each track frame, and three chain protection frames are arranged on the bottom surface of each track frame, so that tracks are more stable and reliable in the walking process. The reinforced chassis of the excavator is suitable for 30T-level and above-30T-level hydraulic excavators which can work well in a high-intensity work environment.

Description

The reinforced chassis of a kind of excavator
Technical field
The utility model relates to a kind of engineering machinery, especially relates to the braced chassis of the above medium-and-large-sized hydraulic crawler excavator of a kind of 30T level.
Background technology
30T level and digging greatly with upper, for conventional chassis of dredging machine, design is comparatively economical, but can not meet preferably mine operation requirement, mine operation intensity is large, need high-strength structure, compared with large driving force, good trafficability characteristic, higher stability and safety, and four-wheel one band structure selects as light-duty, holding capacity is not high, easy to wear and damage, in high-intensity working environment, work, affect operating efficiency, and its chassis size is less than normal, receiving area is little, stability is not high, and structural strength is not strengthened at stressed large position, and corresponding safety is also lower.
Utility model content
In order to overcome, for 30T level and with upper, to dig greatly conventional chassis of dredging machine structural strength low, driving force is less, the problem that trafficability characteristic, stability and safety are lower, the utility model is by improving thrust wheel quantity and chassis size, and a 30T of being applicable to level and above and can be compared with the hydraulic crawler excavator of good berth under intensive work environment is provided.
The technical solution of the utility model is: the reinforced chassis of a kind of excavator, comprise crawler belt and lower vehicle frame, lower vehicle frame both sides are respectively equipped with track frame, track frame one end is provided with motor base, the track frame other end is provided with guiding wheel seat, is provided with driving wheel on motor base, and driving wheel is connected with running motor, guiding wheel seat is provided with directive wheel, and described directive wheel is connected with the tension mechanism being fixed on track frame; It is characterized in that: described track frame bottom surface is provided with nine thrust wheels.
The utility model adopts track frame bottom surface to be provided with three and protects chain frame, by changing size and the ratio of thrust wheel quantity and each index on change chassis, while guaranteeing to walk, crawler belt is more reliable and more stable, and improved intensity and the reliability on chassis, and mate the hydraulic drive that corresponding height drives simultaneously, ensure compared with large driving force, and its chassis lengthens, widens, increases, make chassis there is higher stability, superior grade climbing performance, preferably trafficability characteristic and higher safety.
Brief description of the drawings
Fig. 1 is the utility model chassis of dredging machine structure chart;
Fig. 2 is the utility model guide wheel holder structure figure;
Fig. 3 is the utility model motor seat structure figure;
Fig. 4 is the utility model chassis of dredging machine Side frame figure.
In figure, 1, crawler belt, 2, motor base, 3, driving wheel, 4, running motor, 5, protect chain frame, 6, thrust wheel, 7, tugboat, 8, directive wheel, 9, guiding wheel seat, 10, tension mechanism, 11, track frame, 12, lower vehicle frame, 13, reinforcing rib, 14, wheel seat mounting base, 15, side plate, 16, side plate, 17, fixed head
18, reinforcing rib, 19, motor base mounting base, 20, backplate, 21, the first gusset, 22, the second gusset, 23, middle frame, 24, the 3rd gusset, 25, the 4th gusset.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, detailed description of the invention of the present utility model is as the effect of the mutual alignment between the shape of related each member, structure, each several part and annexation, each several part and operating principle, manufacturing process and operation using method etc., be described in further detail, with help those skilled in the art to utility model of the present utility model conceive, technical scheme has more complete, accurate and deep understanding.
As shown in Figure 1, the reinforced chassis of this excavator comprises lower vehicle frame 12, lower vehicle frame 12 two ends are respectively equipped with track frame 11, track frame 11 one end are provided with motor base 2, track frame 11 other ends are provided with guiding wheel seat 9, on motor base 2, be provided with driving wheel 3, driving wheel 3 is connected with running motor 4, running motor 4 provides power for driving wheel 3, guiding wheel seat 9 is provided with directive wheel 8, track frame 11 end faces are provided with tugboat 7, track frame 11 bottom surfaces are provided with nine thrust wheels, improve the weight capacity on chassis, track frame 11 bottom surfaces are provided with three and protect chain frame 5, described protects chain frame 5 for trapezoidal shape, longer base is fixedly connected with track frame 11, the height that protects chain frame 5 of trapezoidal shape, be that the horizon height of top margin must be in crawler belt 1 between 1/3 and 2/3 thickness of track pin diameter, prevent that crawler belt 1 is difficult for skidding and vacillates now to the left, now to the right and do not contact with ground in the process of walking, reduce the friction in walking process, each chain frame 5 that protects, for double-deck, lays respectively at the both sides of crawler belt 1.Three positions of protecting chain frame 5 are separately positioned on the second thrust wheel of nine wheeled thrust wheels 6, the both sides of the 5th thrust wheel and the 8th thrust wheel 6, while guaranteeing to walk, crawler belt is more reliable and more stable, and wherein driving wheel 3, directive wheel 8, thrust wheel 6, tugboat 7 and crawler belt 1 are conventional four-wheel one band structure.
In Fig. 1, running motor 4 drives driving wheel 3 by coiling crawler belt 1, rotatablely moving of driving wheel 3 is converted into the rectilinear motion of crawler belt 1, and produces driving force by crawler belt 1 machinery is travelled; Tugboat 7 has two to four, is positioned at track frame 11 tops, with guide wheel 8 and driving wheel 3, crawler belt 1 the first half is divided into three to five parts; Its effect is crawler belt 1 top can be held up, and prevents that crawler belt 1 is sagging excessive and produce while causing crawler belt 1 to move and beat and sideshake, and can avoid the horizontal landing of crawler belt 1 and crawler belt 1 to produce and rub with track frame 11.
Tension mechanism 10 is fixed on guiding wheel seat 9, and it can adjust the rate of tension of crawler belt 1, in the time that crawler belt 1 walking produces excessive resistance; the spring of tension mechanism 10 forces directive wheel 8 to move to driving wheel 3 directions; and Compress Spring, make crawler belt 1 lax, play cushioning and protection.And can effectively ensure the ability of crawler belt 1 transmission, avoid because crawler belt 1 is not elastic body completely, thereby after a period of time, will reduce the generation that occur the phenomenon that crawler belt 1 is lax because moulding distortion makes pretightning force under the effect of pretightning force.
In Fig. 2, guiding wheel seat 9 comprises wheel seat mounting base 14, and wheel seat mounting base 14 is provided with biside plate 15,16, and side plate is provided with reinforcing rib 13.Reinforcing rib 13 length are equal in length perpendicular in wheel seat mounting base 14 directions with side plate 15,16 edges preferably.Guiding wheel seat side plate 15 waits the mode of being fixedly connected with to be connected with wheel seat mounting base 14 by welding, reinforcing rib 13 is close to side plate and is fixedly connected with mode with side plate 15 by welding or steady pin etc. and is connected, and reinforcing rib 13 bottoms are fixedly connected with mode with wheel seat mounting base 14 by welding or steady pin etc. and are connected.Reinforcing rib 13 is close to side plate 15, effectively improve the stressing conditions of side plate 15, increased the holding capacity to pressure, moment of flexure etc., and equidistant on two side plates 15 respectively two reinforcing ribs 13 are set, obviously strengthen the bending resistance square ability of guiding wheel seat 9, and improved guiding wheel seat 9 intensity.
In Fig. 3, motor base 2 comprises motor base mounting base 19, and motor base mounting base 19 is provided with fixed head 17 and is located at the backplate 20 of fixed head periphery, and motor base mounting base 19 and fixed head 17 junctions are provided with reinforcing rib 18.Reinforcing rib 18 respectively with motor base mounting base 19, backplate 20 waits the mode being fixedly connected with to be connected with fixed head 17 by welding.Backplate 20 is fixedly connected with fixed head 17 with motor base mounting base 19 respectively, and motor base mounting base 19 is fixedly connected with fixed head 17.Reinforcing rib 18 is close to motor base mounting base 19, backplate 20 and fixed head 17, effectively improve the stressing conditions between fixed head 17 and motor base mounting base 19 and fixed head 17 and backplate 20, increase along the holding capacity to pressure and moment of flexure perpendicular to backplate 20 directions, improved the degree of association between structure and improved motor overall construction intensity.
In Fig. 4, as shown in the figure, the first gusset 21, the second gusset 22 are close to track frame 11 and are fixedly connected with middle frame 23, by increasing gusset 21,22 and corresponding weld seam, have improved the bulk strength of time vehicle frame 12; The 3rd gusset 24, the 4th gusset 25, having under the condition of the first gusset 21, the second gusset 22, improve welding deformation and soldering reliability simultaneously, and the structure herein that makes to get off is strengthened, and reliability increases.
In Fig. 5 and Fig. 6, this chassis of dredging machine lower frame part size is increased to L=4305mm, A=2740mm, B=550mm, H=1140mm, b=600mm, (this size is only for the present embodiment, concrete size can be modified on the basis of this size) and the common chassis of dredging machine of other producers is of a size of L=3700, A=2600, B=490, H=1000, b=600, wherein L is the wheelbase between driving wheel and the axis of rotation of directive wheel, A is the spacing of two crawler belt centers, B is lower vehicle frame level height, H is height of crawler, and b is crawler width.Because B value is better by performance more greatly, therefore having, this excavator better passes through performance.The average unit pressure of ground of crawler belt: p=mg/2b (L+0.35H), because L value and the H value of this excavator are larger, and b value is constant, therefore the p of this excavator is less in the situation that of identical gravity, therefore its walking is more stable.And the increase of chassis size can be mated preferably with four-wheel one band structure, make it have more superior grade climbing performance and higher safety.And adopt the fluid motor-driven matching, ensure that it has enough driving forces.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims (8)

1. the reinforced chassis of excavator, comprise crawler belt (1) and lower vehicle frame (12), lower vehicle frame (12) both sides are respectively equipped with track frame (11), track frame (11) one end is provided with motor base (2), track frame (11) other end is provided with guiding wheel seat (9), on motor base (2), be provided with driving wheel (3), driving wheel (3) is connected with running motor (4), guiding wheel seat (9) is provided with directive wheel (8), and described directive wheel (8) is connected with the tension mechanism being fixed on track frame (11); It is characterized in that: described track frame (11) bottom surface is provided with nine thrust wheels.
2. the reinforced chassis of excavator according to claim 1, it is characterized in that: described track frame (11) bottom surface is provided with three and protects chain frame (5), the horizon height that protects chain frame (5) top end face is arranged between 1/3 and 2/3 thickness of crawler belt (1) track pin diameter.
3. the reinforced chassis of excavator according to claim 1, is characterized in that: described guiding wheel seat (9) comprises wheel seat mounting base (14), and wheel seat mounting base (14) is provided with biside plate (15,16), and side plate is provided with reinforcing rib (13).
4. the reinforced chassis of excavator according to claim 3, is characterized in that: equal in length along perpendicular in wheel seat mounting base (14) direction of described reinforcing rib (13) length and side plate (15,16).
5. the reinforced chassis of excavator according to claim 1, it is characterized in that: described motor base (2) comprises motor base mounting base (19), motor base mounting base (19) is provided with fixed head (17) and is located at the backplate (20) of fixed head periphery, and motor base mounting base (19) and fixed head (17) junction are provided with reinforcing rib (18).
6. the reinforced chassis of excavator according to claim 1, it is characterized in that: described track frame (11) is provided with four gussets, wherein the first gusset (21), the second gusset (22) are close to track frame (11) and are fixedly connected with middle frame (23), and the 3rd gusset (24), the 4th gusset (25) are separately positioned on the both sides of the first gusset (21) and the second gusset (22).
7. the reinforced chassis of excavator according to claim 1, is characterized in that: the wheelbase L=4305mm between the driving wheel of described chassis of dredging machine and the axis of rotation of directive wheel, the spacing A=2740mm of two crawler belt centers, lower vehicle frame level height B=550mm, height of crawler H=1140mm, crawler width b=600mm.
8. the reinforced chassis of excavator according to claim 1, is characterized in that: described running motor (4) is hydraulic motor.
CN201420067038.6U 2014-02-14 2014-02-14 Reinforced chassis of excavator Expired - Fee Related CN203795503U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420067038.6U CN203795503U (en) 2014-02-14 2014-02-14 Reinforced chassis of excavator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420067038.6U CN203795503U (en) 2014-02-14 2014-02-14 Reinforced chassis of excavator

Publications (1)

Publication Number Publication Date
CN203795503U true CN203795503U (en) 2014-08-27

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ID=51377732

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420067038.6U Expired - Fee Related CN203795503U (en) 2014-02-14 2014-02-14 Reinforced chassis of excavator

Country Status (1)

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CN (1) CN203795503U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EE01529U1 (en) * 2019-12-27 2021-04-15 Oleg Bõstrov Rotary platform of a walking excavator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EE01529U1 (en) * 2019-12-27 2021-04-15 Oleg Bõstrov Rotary platform of a walking excavator

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140827

Termination date: 20170214

CF01 Termination of patent right due to non-payment of annual fee