CN86210230U - Frame vibration shovel blade for loading machine - Google Patents

Abstract

The utility model relates to a frame vibration shovel blade, which is an appended work device for a loading machine and is installed in front of a shovel blade, and which is applicable to all loading machines. The device works in vibration mode, being able to reduce the spading drag of the loading machine and to largely raise transmission efficiency and operation productivity. The utility model has the advantages of simple device, convenient operation and simple installation, without breaking the performance of an original machine, changing the structure of the original of machine, and adding a power source. The frame vibration shovel blade is composed of a shovel blade frame, a connecting rod, an eccentric shaft, a hydraulic motor, a positioning oil cylinder, etc. being suitable for spading primary soil, stones and dispersing materials. Power and economy performances are obviously enhanced after the device is used.

Description

Frame vibration shovel blade for loading machine

The utility model relates to the additional work device of a kind of loader spading sedendary soil and lump material.

The equipment of loader spading sedendary soil and lump material is the V-type scraper bowl.Though it is big that loader has index power, the spading ability is strong, and characteristics such as wide adaptability still run into the big problem of spading resistance, even are difficult to sometimes insert when materials such as so more closely knit soil of spading such as sedendary soil or lump material.Therefore caused fuel consumption too much, problem such as transmission system efficiency is low, and the work production rate is low.

For addressing these problems, people are studying always and are reducing the method for inserting resistance.The result shows that vibrating type spading mode is to reduce a kind of effective ways of spading resistance.

Soviet Union's translation in " agricultural technology " o. 11th in 1980 was published on " agricultural machinery intelligence data " 82 year the 9th phase has introduced a kind of vibrating device that is used for the spading stone, it has improved the performance of spading stone, the insertion force of this vibration scraper bowl reduces 40% than common scraper bowl, thereby reduced fuel consumption, improved productivity ratio.But this device is the device that designs for the spading stone specially, not too adapts to the closely knit soil of spading (as sedendary soil), and the also inapplicable lump material that does not sieve (as gravel, cobble, ore deposit soil etc.) the therefore use of this device has significant limitation.And also exist several problems when being used for closely knit soil of spading and lump material.At first, the power of this device adopts the hydraulic motor of two reciprocatings, be installed in the relevant position with rotating bucket connecting rod and the joining hinge pin of scraper bowl, when the reciprocating motor operations, promote whole scraper bowl and make angular oscillation around the respective hinge of the hinge pin that is connected with scraper bowl with swing arm.The reciprocating motor of this device is not as gear type motor economy, and usability is also good not as gear motor.The second, this device supporting-point is equivalent to the swing arm hinge pin, and therefore vibration reaches whole loader, causes the complete machine nuisance vibration, must adopt vibration isolation measure.The 3rd, this device is because oscillating component is whole scraper bowl, and oscillating mass is big, and consumed work is bigger.The 4th, the on-line operation position of this device is the edge of shovel, and the edge of shovel to the distance of swing arm hinge pin greater than the distance of swing arm hinge pin to rotating bucket connecting rod hinge pin, thereby the load back and forth on the hydraulic motor axle greater than edge of shovel real load, it is too high to be directed at the motor stand under load.The 5th, when scraper bowl vibrated, the material of the scraper bowl of having packed into can move with scraper bowl, and consumed power is being made idle work.

Task of the present utility model is exactly to manufacture and design a kind of vibrating type additional work device that is applicable to closely knit soil of spading and lump material.It is little that requirement should be inserted resistance, and power consumption is few again, and simple in structure, cost is low, and functional performance is good, and overcomes the shortcoming of whole scraper bowl vibrating device.

For reaching this purpose, technical solution of the present utility model is: undesirable at whole scraper bowl vibrating type equipment power source, the vibrating mass quality is big, shortcomings such as energy loss are arranged, designed the employing gear type motor source that is used as power, with the edge of shovel vibrating device of frame type edge of shovel mode of vibration.And designed positional cylinder, as location and the overload protection of the edge of shovel when not vibrating.

The frame type edge of shovel is by edge plate of shovel, and two side edge plates are formed rectangular frame, two side edge plates and edge plate of shovel plane inclination with cross tube.Edge plate of shovel on the framework is connected with the edge of shovel on the scraper bowl with two hinges.Half of hinge is installed in the bucket tooth groove interior (or installing on position of bucket tooth) of scraper bowl.Second half of hinge is installed on the relevant position on the framework edge plate of shovel.Thereby the framework edge of shovel is coupled together by hinge and scraper bowl, and whole framework can be made angular oscillation around these two hinges.Two locating pieces that match with positional cylinder are installed on the cross tube of framework.They are installed on the inner surface of cross tube, and they can insert in the strip hole on the overhanging piston rod of positional cylinder.When not pinning framework, locating piece can move freely in strip hole, promptly allows the framework edge of shovel to make angular oscillation.In the time will pinning framework, inner carrier band in two pistons of positional cylinder overhanging piston rod toward retraction, the piston rod that the outer piston band contracts in is overhanging, up to clamping locating piece, at this moment positional cylinder has pinned locating piece, thereby pinned framework, played the effect of location, a hinge that is connected with connecting rod also has been installed on cross tube.Half of this hinge is installed on the rear surface of cross tube, and second half of hinge is connecting rod, and promptly an end of connecting rod has a hole, cooperate with joint pin, joint pin is fixed on the framework cross tube, has formed a hinge, and the other end of connecting rod is installed on the cam pin of hydraulic motor eccentric shaft.

The utility model adopts a gear type motor to be the vibration power source, and hydraulic motor moves back and forth by the eccentric shaft drivening rod and drives the vibration of the frame type edge of shovel.Gear motor is installed on the scraper bowl rear wall reinforcing rib, adopts gear motor except it is inexpensive, mainly is that it is insensitive to oil contamination, adapts to the engineering machinery bad working environment.In order to guarantee not work for vibrating mechanism, the unlikely quadric chain that damages because of external force is excessive, and two ad hoc double-piston positional cylinders also are installed on the reinforcing rib of scraper bowl rear wall, when vibration frame is not worked or during loading machine steering, pressure oil enters from cylinder cavity, at first two pistons is released to both sides, rests on the preposition, to guarantee that connecting rod link and eccentric shaft are unlikely stressed excessive when framework is subjected to ultimate load.For guaranteeing before vibrating mechanism begins vibration, locked cylinder is necessarily thrown off, the spy is provided with a sequence valve in system, it is by such sequential working: fluid is introduced into the positional cylinder exocoel, piston is to the position motion of uncaging, unclamp up to finishing, pressure oil drives hydraulic motor by sequence valve then, drives vibrating mechanism work.

In order to save engine power, make loader can send largest index power in the index operating mode, the utility model spy on hydraulic system is provided with bidirectional hydraulic lock, promptly when vibrating mechanism is not worked, positional cylinder locking hold mode is not kept by steering hydraulic system supply pressure oil, but cut off oil circuit to lock by two-way liquid, keeping positional cylinder two working chambers is dead volume, thereby makes framework be positioned.

The starting of oscillation of vibrating mechanism adopts a hand-operated direction valve to control with the manipulation that stops, and is convenient, practical.

For reaching practical target, this vibrating mechanism does not set up hydraulic power source, and employing and wheel loader share the mode of a hydraulic power source, on power division, the preferential need of work that guarantees steering, the pressure oil of driven wheel hydraulic motor adopts a monostable flow divider to obtain from steering, monostable flow divider guarantees when steering is worked, the pressure oil of steering pump output is all supplied with steering, have only when steering is not worked, monostable flow divider is just shunted to the vibrating mechanism hydraulic system.Just to have guaranteed to keep the original service behaviour of loader constant from designing for this.Be loader when the spading operation, generally do not turn to, thereby make the vibrating mechanism hydraulic system normally bring into play benefit.Not only save a cover pumping source, and can not change former truck system.

Main feature of the present utility model is: the spading resistance is little; Gearratio is bigger in the mechanism, has reduced the load of hydraulic motor and eccentric shaft; Because oscillating component is the frame type edge of shovel, its weight is below 1/6 of whole scraper bowl only, and oscillating mass is little.And be installed in the scraper bowl front, can not cause complete machine oscillation; Because the edge plate of shovel area of the frame type edge of shovel is little, only play the excavation effect, can not drive the material vibration in the scraper bowl of having packed into, do not waste power; This apparatus structure is simple, easy accessibility; The handiness of this device when not needing to vibrate, owing to adopted positional cylinder, has been guaranteed the tram of the frame type edge of shovel, has guaranteed the service behaviour of former machine; This device pressure oil-source is taken from the loading machine steering system, but does not influence the original service behaviour of steering; This device adopts the power source of gear type motor as vibrating mechanism, so vibration frequency is adjustable continuously within the specific limits, and has good overload, adapting to the demand of loader complex job operating mode, and has characteristics such as oil contamination are insensitive.

The utility model removes can reduce sedendary soil greatly, and lump material inserts outside the resistance, and other material is also had good effect.

Fig. 1. be the utility model structure chart (side-looking)

Fig. 2. be the utility model structure chart (overlooking)

Fig. 3. the hydraulic work system schematic diagram

Below in conjunction with accompanying drawing composition of the present utility model and technical essential are illustrated:

With reference to Fig. 1, Fig. 2, Fig. 3 critical piece of the present utility model be:

1. the frame type edge of shovel

2. framework edge plate of shovel hinge

3. framework side edge plate

4. framework cross tube

5. positional cylinder

6. gear type motor

7. eccentric shaft

8. connecting rod

9. framework cross tube hinge

10. scraper bowl

11. eccentric shaft bearing seat

12. bidirectional hydraulic lock

13. sequence valve

14. hand-operated direction valve

15. monostable flow divider

When the utility model rotates when gear type motor (6), driving eccentric wheel (7) rotates together, eccentric shaft (7) promotes connecting rod (8) and moves back and forth, and connecting rod (8) promotes frame type edge of shovel cross tube (4), makes framework make angular oscillation around edge plate of shovel hinge (2).When the utility model frame type edge of shovel does not need to vibrate, hand-operated direction valve (14) cuts off the oil circuit that leads to gear type motor (6), the oil circuit that leads to positional cylinder (5) is connected, make positional cylinder (5) work, clamp frame type edge of shovel cross tube (4), cylinder action finishes back bidirectional hydraulic lock (12) with oil cylinder oil circuit locking.When needs vibrate, hand-operated direction valve (14) is with gear type motor (6), and bidirectional hydraulic lock (12) is connected with the pressure oil circuit, and bidirectional hydraulic lock (12) is opened, positional cylinder (5) action, frame type edge of shovel cross tube is unclamped, and after positional cylinder was totally released, system pressure raise, sequence valve (13) is opened, gear type motor (6) rotates, and drives frame movement, and the edge of shovel begins vibration.

Claims (1)

1, a kind of loader' frame formula vibration edge of shovel is characterized in that:

A. the frame type edge of shovel is made up of edge plate of shovel, two side edge plates, cross tube, two side edge plates and edge plate of shovel single face tilt, edge plate of shovel on the framework is connected with the edge of shovel on the scraper bowl with two hinges, and the cross tube of the frame type edge of shovel is connected with connecting rod on being contained in the hydraulic motor eccentric shaft with hinge;

B. on the cross tube inner surface of framework, two locating pieces that match with positional cylinder are housed;

C. vibrate power source and adopt gear type motor, hydraulic motor moves back and forth by the eccentric shaft drivening rod and drives the vibration of frame type scraper bowl, and gear motor is installed on the scraper bowl rear wall reinforcing rib;

D. the pressure oil of driven wheel hydraulic motor adopts monostable flow divider shunting.

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