CN214460738U

CN214460738U - Shovel tooth vibration mechanism of excavator bucket

Info

Publication number: CN214460738U
Application number: CN202023217580.XU
Authority: CN
Inventors: 韩坦; 王金浩; 李宏; 董德坤; 尚致晨; 于德浩; 杨清雷; 徐兴宇
Original assignee: 32395 Unit Of Pla
Current assignee: 32395 Unit Of Pla
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-10-22
Anticipated expiration: 2030-12-28

Abstract

The utility model provides an excavator scraper bowl forming relieved tooth vibration mechanism, belong to excavator scraper bowl technical field, including the protecting crust, the protecting crust is installed in the inboard below of just arranging between two fixed ears of scraper bowl, install hydraulic motor in the protecting crust, hydraulic motor is through its epaxial gear of output and transmission shaft gear engagement, the transmission shaft both ends are rotated and are installed on the rib lateral wall of scraper bowl both sides, the transmission shaft passes through the connecting piece and is connected with long connecting rod one end, the long connecting rod other end is connected with swing arm one end, the swing arm other end is connected with the bucket tooth side ear of vibration bucket tooth, long connecting rod, swing arm and bucket tooth side ear all place the ditch inslot of seting up at scraper bowl both sides rib lateral wall, and there is the protecting cover that corresponds with the ditch groove at the scraper bowl rib through screw fixed mounting. The utility model discloses vibration mechanism, simple structure, not fragile, overhaul and maintain the convenience, and do not influence the fill and hold.

Description

Shovel tooth vibration mechanism of excavator bucket

Technical Field

The utility model belongs to the technical field of the excavator scraper bowl, concretely relates to excavator scraper bowl forming relieved tooth vibration mechanism.

Background

The addition of vibration to the bucket or tooth of a single bucket hydraulic excavator is an effective means of improving excavation efficiency and media adaptability. In the aspect of a way of generating vibration, a control valve is added in a control oil path of a bucket hydraulic cylinder, and the whole bucket is driven to vibrate through the vibration of the bucket hydraulic cylinder. The mode has the advantages of great loss to a hydraulic system, poor economy, influence on the service life of the whole vehicle, great vibration of the whole vehicle and poor personnel comfort, so the mode is rarely applied in the field of market products and is mostly adopted by various research institutes. As shown in fig. 1.

Some other ways have been studied in various papers and patents, the primary mode of which is to separately add vibration to the tooth. The structure forms of the prior art are that a small oil cylinder and other mechanisms are added behind the shovel teeth to generate vibration, and then various changes are made according to the layout forms and the driving modes.

The chinese invention patent CN2019108094550 "variable frequency vibration bucket and control system" is novel in its content, and the attached principle of the patent is shown in fig. 2 and 3.

The scheme adopts a structural form that the bottom is provided with a vibrating shovel tooth. However, from the application point of view, at least the following key problems are not solved:

(1) the oil supply pipeline of the system is difficult to arrange, and an oil pipe connected to the bottom of the bucket is easily damaged in excavation.

(2) The valves and control systems in the bucket are difficult to arrange, and the hydraulic elements in the bucket are difficult to arrange and install.

(3) The bucket is complex in process, heavy in structure and remarkably high in cost, and the economical efficiency is affected.

(4) The bottom is thickened, so that the digging medium is not easy to cut into, and the effective bucket capacity is influenced.

(5) The arrangement of precision parts at the bottom of the bucket is subject to deformation by impact during operation and is difficult to maintain.

Chinese utility model patent CN201920021478.0 "a vibrating bucket tooth subassembly of excavator bucket", designed a vibrating bucket tooth subassembly that attaches to single bucket hydraulic excavator bucket. The attached exterior view and schematic diagram of the patent are shown in fig. 4 and 5.

This solution is structured like a reduced version of a breaking hammer, which has similar problems in practice to the previous solution. In addition, the proposal also adopts nitrogen pressurization, which also has the problems of difficult maintenance and the like.

Through inspection, a vibration relieving mechanism is also proposed in many papers, but the problems of complex structure, easy damage and difficult installation exist.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides an excavator bucket forming relieved tooth vibration mechanism, which comprises a bucket, a hydraulic motor, a transmission shaft, a connecting piece, a long connecting rod, a swing arm, a vibration bucket tooth and a protective shell, wherein the protective shell is arranged at the inner side of the bucket and is arranged below the position between two fixed lugs of the bucket, the hydraulic motor is arranged in the protective shell, the vibration mechanism takes the hydraulic motor as a power source, the protective shell and the hydraulic motor are arranged below the position between the two fixed lugs of the bucket, the damage caused by the contact and the friction with an excavating medium in the operation of the bucket is avoided, the influence on the bucket capacity is lightened, the hydraulic motor is meshed with the transmission shaft gear through the gear on the output shaft of the hydraulic motor, the two ends of the transmission shaft are rotatably arranged on the side walls of the reinforced parts at the two sides of the bucket, the transmission shaft is connected with one end of the long connecting rod through the connecting piece, the other end of the long connecting rod is connected with one end of the swing arm, the other end of the swing arm is connected with the side lug of the bucket tooth of the vibration bucket tooth, long connecting rod, swing arm and bucket tooth side ear all place the ditch inslot that the reinforcing part lateral wall was seted up in scraper bowl both sides, and pass through screw fixed mounting at the scraper bowl reinforcing part and have the protecting cover that corresponds with the ditch groove.

Three pin shafts are mounted on the swing arms, one of the pin shafts located at the end portions is connected with the long connecting rod, the other end of the pin shaft located at the end portion is connected with the bucket tooth side lug, and the pin shaft located in the middle is connected with the side wall of the bucket.

The vibrating bucket tooth is composed of a supporting cross beam, a bucket tooth and bucket tooth side lugs, the bucket tooth is evenly arranged in the length direction of the supporting cross beam, and the bucket tooth side lugs connected with the swing arms are integrally formed at two ends of the supporting cross beam.

The connecting piece comprises the body of rod, disc and spliced pole, disc one end and body of rod integrated into one piece, and disc axis and body of rod axis collineation, and disc other end integrated into one piece has the spliced pole, spliced pole axis and disc axis parallel arrangement, and the connecting piece passes through the spliced pole to be connected with long connecting rod.

The hydraulic motor is arranged longitudinally or transversely, and is connected with the transmission shaft through a straight gear when transversely arranged; when the longitudinal arrangement is adopted, the bevel gear is connected with the transmission shaft.

A use method of a shovel tooth vibration mechanism of an excavator bucket comprises the following steps:

the during operation starts hydraulic motor, and hydraulic motor rotates through gear and the epaxial gear engagement of transmission above that, drives the transmission shaft and rotates, and the transmission shaft rotates and drives the pin and rotate, and then drives long connecting rod reciprocating swing, through long connecting rod, swing arm drive vibration bucket tooth motion, under the restriction of slot, long connecting rod and bucket tooth side ear all move along its tangential direction to the vertical swing of long connecting rod converts the horizontal swing of vibration bucket tooth into.

The utility model has the advantages that:

1. the problem of oil pipe and line arrangement of the relieving vibration mechanism is solved. The traditional relieving vibration mechanism realizes relieving vibration by arranging a hydraulic cylinder (or a similar mechanism) behind the relieving, so that a hydraulic oil pipe is difficult to arrange and connect, and the traditional relieving vibration mechanism is complex to process and easy to damage in a bucket.

2. The protection problem of precision parts in the relieving vibration mechanism is solved. In the scheme that the hydraulic cylinder is arranged behind the shovel teeth, the hydraulic cylinder and the control valve are both precision parts and are easy to damage when the bucket excavates hard media. This scheme arranges hydraulic motor in scraper bowl bucket ear position, also better satisfied the protection demand.

3. And the influence of the mechanism on the bucket capacity is reduced. Install drive mechanism additional in scraper bowl both sides strengthen protruding inside, install hydraulic motor additional between the fixed ear of scraper bowl, better solution the problem that vibration mechanism occupies the bucket appearance.

4. The use and maintenance cost is comprehensively considered. In the excavation operation, the vibrating bucket is bad in working condition, abrasion and impact are serious, the vibrating bucket teeth, the swing arms, the long connecting rods and the guard plates in the scheme are all treated as wearing parts, the vibrating bucket teeth, the swing arms, the long connecting rods and the guard plates are easy to replace and low in value, and low use and maintenance cost is achieved.

5. And the influence of the vibration mechanism on a hydraulic system and the whole vehicle is reduced. The vibration of the engineering machinery body and a hydraulic system can be greatly reduced based on the mode that the vibration relieving mechanism loads vibration on a bucket oil cylinder, and the vibration impact on the hydraulic system can be further reduced through the mode that a hydraulic motor is driven and the mode that an impact control valve is combined with a hydraulic cylinder, so that the practicability of the system is improved.

6. The utility model discloses excavator scraper bowl forming relieved tooth vibration mechanism, simple structure, easy installation, and install in the enhancement part lateral wall outside of scraper bowl, do not change original scraper bowl appearance, and do not need to occupy the bucket of very big scraper bowl and hold, and the utility model discloses link gear all encapsulates in the ditch inslot of enhancement part lateral wall through the protecting cover, not with grit direct contact, and not fragile, simultaneously the utility model discloses vibration mechanism easily overhauls and maintains.

Drawings

FIG. 1 is a schematic illustration of vibration generated by a bucket cylinder;

FIG. 2 is a cross-sectional view of the variable frequency vibratory bucket and the handling system;

FIG. 3 is a side sectional view of the variable frequency vibratory bucket and handling system;

FIG. 4 is a schematic exterior view of a vibrating tooth assembly of an excavator bucket;

FIG. 5 is a schematic illustration of a vibrating tooth assembly of an excavator bucket;

FIG. 6 is an exploded view of a tooth vibrating mechanism of a shovel of an excavator bucket;

FIG. 7 is a schematic view of a dipper tooth vibrating mechanism of an excavator bucket with the cover removed;

FIG. 8 is a schematic view of a coupling of a tooth vibrating mechanism of a bucket of an excavator according to the present invention;

1-bucket, 2-hydraulic motor, 3-transmission shaft, 4-connecting piece, 401-rod body, 402-disc, 403-connecting column, 5-long connecting rod, 6-swing arm, 7-vibrating bucket tooth, 701-supporting beam, 702-bucket tooth side lug, 703-bucket tooth, 8-protective shell and 9-protective cover.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

As shown in fig. 6 to 8, a dipper teeth vibration mechanism of a digging machine bucket comprises a bucket 1, a hydraulic motor 2, a transmission shaft 3, a connecting piece 4, a long connecting rod 5, a swing arm 6, a vibration dipper teeth 7 and a protective shell 8, wherein the protective shell 8 is arranged at the inner side of the bucket 1 and is arranged below two fixed lugs of the bucket 1, the hydraulic motor 2 is arranged in the protective shell 8, the vibration mechanism takes the hydraulic motor 2 as a power source, the protective shell 8 and the hydraulic motor 2 are arranged below two fixed lugs of the bucket 1, the damage caused by contact and friction between the bucket 1 and a digging medium in the work process is avoided, the influence on the bucket capacity of the bucket 1 is reduced, the hydraulic motor 2 is engaged with the transmission shaft 3 through a gear on an output shaft thereof, two ends of the transmission shaft 3 are rotatably arranged on the side walls of a reinforcing part at two sides of the bucket 1, the transmission shaft 3 is connected with one end of the long connecting rod 5 through the connecting piece 4, the other end of long connecting rod 5 is connected with 6 one end of swing arm, the 6 other end of swing arm is connected with the bucket tooth side ear 702 of vibration bucket tooth 7, long connecting rod 5, swing arm 6 and bucket tooth side ear 702 all place the ditch inslot of seting up at 1 both sides rib of scraper bowl, and there is protecting cover 9 that corresponds with the ditch groove at 1 rib of scraper bowl through screw fixed mounting, protecting cover 9 not only has the effect of protection long connecting rod 5, swing arm 6 and connecting piece 4, but also can strengthen the intensity of 1 rib of scraper bowl lateral wall.

Three pin shafts are mounted on the swing arm 6, one of the pin shafts located at the end portions is connected with the long connecting rod 5, the other pin shaft located at the end portion is connected with the bucket tooth side lug 702, and the pin shaft located in the middle is connected with the side wall of the bucket 1.

The vibrating bucket tooth 7 is composed of a supporting cross beam 701, a bucket tooth 703 and bucket tooth side lugs 702, the bucket tooth 703 is uniformly arranged along the length direction of the supporting cross beam 701, and the bucket tooth side lugs 702 connected with the swing arm 6 are integrally formed at two ends of the supporting cross beam 701.

The connecting piece 4 is composed of a rod body 401, a disc 402 and a connecting column 403, one end of the disc 402 is integrally formed with the rod body 401, the axis of the disc 402 is collinear with the axis of the rod body 401, the other end of the disc 402 is integrally formed with the connecting column 403, the axis of the connecting column 403 is parallel to the axis of the disc 402, and the connecting piece 4 is connected with the long connecting rod 5 through the connecting column.

The hydraulic motor 2 is arranged longitudinally or transversely, and is connected with the transmission shaft 3 through a straight gear when transversely arranged; when a longitudinal arrangement is used, it is connected to the drive shaft 3 by means of bevel gears.

the during operation starts hydraulic motor 2, hydraulic motor 2 rotates through gear on it and the epaxial gear engagement of transmission 3, it rotates to drive transmission shaft 3, transmission shaft 3 rotates and drives the pin and rotate, and then drive the reciprocal swing of long connecting rod 5, through long connecting rod 5, swing arm 6 drives the motion of vibration dipper tooth 7, under the restriction of slot, long connecting rod 5 and dipper tooth side ear 702 all move along its tangential direction, thereby convert the longitudinal swing of long connecting rod 5 into the horizontal hunting of vibration dipper tooth 7.

Claims

1. The utility model provides an excavator scraper bowl forming relieved tooth vibration mechanism, a serial communication port, including scraper bowl, hydraulic motor, transmission shaft, connecting piece, long connecting rod, swing arm, vibration bucket tooth and protecting crust, the protecting crust is installed in the scraper bowl inboard and is arranged the below between two fixed ears of scraper bowl, install hydraulic motor in the protecting crust, hydraulic motor is through its epaxial gear of output and transmission shaft gear engagement, the transmission shaft both ends are rotated and are installed on the rib lateral wall of scraper bowl both sides, the transmission shaft passes through the connecting piece and is connected with long connecting rod one end, the long connecting rod other end is connected with swing arm one end, the swing arm other end is connected with the bucket tooth side ear of vibration bucket tooth, long connecting rod, swing arm and bucket tooth side ear all place the ditch inslot that the rib lateral wall was seted up in scraper bowl both sides, and there is the protecting cover that corresponds with the ditch groove at the scraper bowl rib through screw fixed mounting.

2. The excavator bucket tooth vibratory mechanism of claim 1, wherein: three pin shafts are mounted on the swing arms, one of the pin shafts located at the end portions is connected with the long connecting rod, the other end of the pin shaft located at the end portion is connected with the bucket tooth side lug, and the pin shaft located in the middle is connected with the side wall of the bucket.

3. The excavator bucket tooth vibratory mechanism of claim 1, wherein: the vibrating bucket tooth is composed of a supporting cross beam, a bucket tooth and bucket tooth side lugs, the bucket tooth is evenly arranged in the length direction of the supporting cross beam, and the bucket tooth side lugs connected with the swing arms are integrally formed at two ends of the supporting cross beam.

4. The excavator bucket tooth vibratory mechanism of claim 1, wherein: the connecting piece comprises the body of rod, disc and spliced pole, disc one end and body of rod integrated into one piece, and disc axis and body of rod axis collineation, and disc other end integrated into one piece has the spliced pole, spliced pole axis and disc axis parallel arrangement, and the connecting piece passes through the spliced pole to be connected with long connecting rod.

5. The excavator bucket tooth vibratory mechanism of claim 1, wherein: the hydraulic motor is arranged longitudinally or transversely, and is connected with the transmission shaft through a straight gear when transversely arranged; when the longitudinal arrangement is adopted, the bevel gear is connected with the transmission shaft.