CN106369009A

CN106369009A - Telescoping rod protection device

Info

Publication number: CN106369009A
Application number: CN201610877742.1A
Authority: CN
Inventors: 杜宏来
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-10-05
Filing date: 2016-10-05
Publication date: 2017-02-01

Abstract

The invention discloses a telescoping rod protection device which is widely suitable for hydraulic oil cylinders, air cylinders and electric telescoping rods of various sorts of mechanical equipment, in particular to earthwork construction machines like an excavator, a grader, a bulldozer, a loading machine, a land leveler, a drilling machine and a crane. By means of the telescoping rod protection device, damage to the surface of a telescoping rod due to impact, strike, scraping and electric spark by hard objects and charged bare wires in the operation process of mechanical equipment because of negligence and faults can be avoided completely. Compared with repair or replacement of the telescoping rod, the repair or replacement cost of the telescoping rod protection device is extremely low, and the occupied time is quite short. If the telescoping rod protection device is additionally arranged on the mechanical equipment with a telescoping cylinder, market highlights can be added for manufacturers of the mechanical equipment, so that market competition capacity is improved; and meanwhile the using and repair costs of mechanical equipment users can be reduced, and the working efficiency can be improved while time is saved.

Description

Telescopic rod protection device

Technical field

Telescopic rod protection device is widely used in protecting the flexible of hydraulic jack, cylinder and the electric cylinder of various plant equipment Bar, particularly restoration in earth-rock construction machinery, such as excavator, two hurry, bull-dozer, loader, land leveller, rig, crane etc..

Background technology

The expansion link of hydraulic jack, cylinder or electric cylinder (general name working cylinder) is very accurate part, needs with special Materials processing, most of expansion link also needs to carry out hardening and tempering process process after processing, and outer surface also will after fine grinding Carry out crossing hard chrome, complex manufacturing, high processing costs again, the order cycle time is long.

But in plant equipment work process, expansion link is happened occasionally by injuring destroyed phenomenon.As a example excavator, In general, 1 bucket hydraulic oil cylinder, 1 forearm hydraulic jack and 2 large arm hydraulic jacks are had on every excavator.No By being during earthwork evacuation, in the work progress still excavating under water, the stretching of scraper bowl, forearm and large arm hydraulic jack The phenomenon that the meeting of contracting bar causes surface injured because of carelessness, the error of manipulator or damages, as shown in Figure 1.These destructive factors Mainly have: the 1. hard objects in soil, in water, such as rock, iron block, reinforcing bar etc., the scratch touching expansion link surface and causing, Abrade, scratch and wound；Dug in the bare wire at backhoe top and underground or water when 2. powered bare wire and cable, such as operation ruin outer Skin and electric spark that exposed electric wire etc. touches expansion link surface and causes wound.3. hard tumble object, from such as The rock rolling down on high slope, pushes away injuring by a crashing object, wounding of the rock falling etc. from hole when excavating in hole.

Once expansion link is thoroughly damaged it is necessary to the expansion link that more renews or whole hydraulic jack, cost is extremely expensive, and Construction speed can be had a strong impact on, great economic loss can be caused to operation and management.Injured for simply telescopic oil cylinder surface For excavator, also must stop operation because impaired expansion link surface can constantly stretch work process in scratch with Its oil sealing contacting, thus leading to hydraulic oil to leak, while wasting hydraulic oil, can make being short of power of excavator reduce Work efficiency, seriously rear excavator cannot work oil sealing damaged at all, the appearance of excavator of also making dirty.Surface can be subject to The expansion link damaging is repaired, and is mainly finely polished after repair welding again, but the perished surface circularity after repairing and light Cleanliness all with dispatch from the factory before expansion link differ greatly, still have larger scraping to fray on the oil sealing being in contact with it in telescopic process Evil, can only make oil sealing maintain normal work at short notice.Therefore this repairing is temporary transient dealing with, and is finally also intended to change Flexible cylinder rod, repairs and changes expansion link, not only occupy the activity duration, similarly can bring huge economy to operation and management Loss.

Telescopic rod protection device can avoid in operation process the various plant equipment having working cylinder because of hard objects pair The destruction that expansion link surface is directly clashed into and produced.Destroy body contact expansion link surface before, first contact protection device, have with Lower 3 kinds of situations occur: 1. when expansion link suffers from that destructive power is less to destroy body, be not enough to damage protection device and direct Separate；2., when expansion link suffers from the larger destruction body of destructive power, protection device can deform impaired, but will not touch flexible The surface of bar, only need to stop operation, protection device be keeped in repair or is changed；3. when expansion link suffers from destructive power phase When big destruction body, even make protection device create serious deformation, but also expansion link directly will not be rushed Hit, but extruding is produced to its surface by protection device, and general extruding e insufficient to damage the surface of expansion link.Unless King-sized extruding, not only can damage protection device, also can damage oil cylinder or even whole plant equipment.

For repairing or changing expansion link, maintenance or the cost changed used by telescopic rod protection device are extremely low Honest and clean, the time of occupancy is also considerably less.If increasing patented product of the present invention in the plant equipment have telescoping cylinder, machine not only can be given The manufacturer of tool equipment increases sells bright spot, improves the market competitiveness, reduces using dimension also can to the user of plant equipment Accomplish this, time-saving simultaneously, improve work efficiency.

Content of the invention

, telescopic rod protection device is can point two types taking the hydraulic bucket oil cylinder of excavator as a example: protective cover board-like and Protection pole type (respectively as shown in Figures 2 and 6), by protective (respectively as shown in Fig. 3, Fig. 7), drive seat (respectively as Fig. 4, Shown in Fig. 8), leading seat (respectively as shown in Figure 5, Figure 9) 3 parts composition, protective can be protection board cover or guarantor Guard bar frame, respectively as shown in Fig. 3 and Fig. 7.In the way of being spirally connected or welding, drive seat (a in Fig. 2 and Fig. 6) is fixed on work The exposed end portion of the expansion link (s in Fig. 2, Fig. 6) of cylinder, leading seat (c in Fig. 2 and Fig. 6) is fixed on working cylinder (as schemed G in 2 and Fig. 6) termination on, if space allows it is also possible to assemble in turn, that is, exchange the installation of drive seat and leading seat Position.Protective (b in Fig. 2, Fig. 6) passes through drive seat (a in Fig. 2, Fig. 6) and expansion link (s as in Fig. 2 and Fig. 6) Head is connected, and is connected with leading seat (c as in Fig. 2 and Fig. 6) by the slide rail of itself.In the course of the work, expansion link exists In the presence of fluid pressure, gas pressure or electric energy energy, when head is away from cylinder body, the drive seat in flexible head can be drawn Away from cylinder body, when head is close to cylinder body, the drive seat in head can promote protective synchronous to cylinder body direction for protective synchronization Motion.During back and forth movement, because the slide rail on protective is all the time all in leading seat, so with respect to expansion link section Radial direction degree of freedom is limited, and protective is merely able to the axially-movable along expansion link, and no matter expansion link, where, is all being protected In the covering protection of watch box, the object no matter when destroying expansion link all cannot directly scratch, clash into, shocking by electricity or extruding expansion link Surface, thus expansion link is played with extraordinary protective effect.

Brief description:

Fig. 1 excavator fluid oil cylinder expansion link, has been damaged surface because not installing telescopic rod protection device；

Fig. 2 is the schematic diagram of protection board cover type telescopic rod protection device, and in figure left figure is front view, and right figure is the section view of left figure Figure；

Fig. 3 is the flexible protection device protective schematic diagram of protection board cover type, and in figure left figure is front view, and right figure is the side-looking of left figure Figure；

Fig. 4 is the flexible protection device drive seat schematic diagram of protection board cover type, and in figure left figure is front view, and right figure is the side-looking of left figure Figure；

Fig. 5 is the flexible protection device leading seat schematic diagram of protection board cover type, and in figure left figure is front view, and right figure is the side-looking of left figure Figure；

Fig. 6 is the telescopic rod protection device of protection pole type, and in figure left figure is front view, and right figure is the sectional view of left figure；

Fig. 7 is the flexible protection device protective schematic diagram of protection pole type, and in figure left figure is front view, and right figure is the side-looking of left figure Figure；

Fig. 8 is the flexible protection device drive seat schematic diagram of protection pole type, and in figure left figure is front view, and right figure is the side-looking of left figure Figure；

Fig. 9 is the flexible protection device leading seat schematic diagram of protection pole type, and in figure left figure is front view, and right figure is the side-looking of left figure Figure.

Claims

1. telescopic rod protection device is made up of protective, drive seat and leading seat 3 part, for protecting hydraulic jack, pneumatic gas Cylinder and the expansion link of driven by power；By way of being spirally connected or welding, drive seat is fixed on the termination exposed of expansion link； Leading seat is spirally connected or is weldingly fixed on cylinder body；Protective is connected with drive seat and keeps synchronous, passes through guide rail and leads simultaneously Row seat is in slip relatively；It is characterized in that, when expansion link in cylinder body to overhang when, protective can synchronous with expansion link to Direction motion away from cylinder body.

2. the telescopic rod protection device according to right 1 is it is characterised in that when expansion link is from cylinder body indentation outside to inside, protect Watch box synchronously can be moved to the direction close to cylinder body with expansion link.

3. the flexible protection device according to right 1 and 2 it is characterised in that either expansion link in cylinder body to overhanging, Or from cylinder body indentation outside to inside, protective all keeps synchronous with expansion link.

4. according to right 1, right 2 and the telescopic rod protection device described in right 3 it is characterised in that no matter expansion link is in what position Put, the surface portion that it exposes is all in synchronous protective coverage, thus is protected, thus avoiding destruction Body damaging, wounding, wiping scuffing, and the injury from electricity contacting electrical body and causing to expansion link.