CN201335051Y

CN201335051Y - Hydraulic rock drill accumulator

Info

Publication number: CN201335051Y
Application number: CNU200920105052XU
Authority: CN
Inventors: 任清; 胡赋; 赵振国; 刘建; 刘晓倩
Original assignee: Zhangjiakou Xuanhua Huatai Mining & Metallurgic Machinery Co Ltd
Current assignee: Zhangjiakou Xuanhua Huatai Mining & Metallurgic Machinery Co Ltd
Priority date: 2009-01-12
Filing date: 2009-01-12
Publication date: 2009-10-28
Anticipated expiration: 2019-01-12

Abstract

The utility model discloses a hydraulic rock drill accumulator, which comprises a housing, an inner sleeve, a diaphragm, a combined gasket, a screw, a plug, a nut, a seal ring, a spring gasket and a combined gasket, wherein, the housing is fixed on an impact body through the screw and the spring gasket; a nitrogen filling hole is formed on the housing; the plug is mounted in the filling hole so as to seal the filling hole; the spring gasket is mounted under the screw; the inner sleeve is arranged in the housing; a groove is formed on a surface facing to the impact body on the inner sleeve; the seal ring is arranged in the groove so as to prevent oil leakage; the diaphragm is clamped between the inner sleeve and the housing and divides the cavity between the inner sleeve and the housing into a nitrogen cavity and an oil cavity; a plurality of oil inlet holes are formed in the positions corresponding to an oil inlet channel of the impact on the inner sleeve, thereby avoiding easy damage of the diaphragm due to great impact force; and the combined gaskets are arranged under the plug. The utility model has the advantages of long service life of the diaphragm, convenient replacement and the improved safety factor of the whole accumulator.

Description

The hydraulic gate accumulator

Technical field

The utility model relates to a kind of rock drill, particularly relates to the accumulator on a kind of Impact Mechanism of Hydraulic Rock Drill.

Background technique

Because accumulator can stored energy, therefore utilized widely and with the miscellaneous part applied in any combination on various engineering goods.In the rock drilling operation, accumulator impacts the supplementary energy of part as hydraulic gate, has saved the energy of hydraulic gate, in this described hydraulic gate, described accumulator links together for impacting pressure oil pipeline partly with hydraulic gate, is used to accumulate and release energy.

Shown in Fig. 1, the accumulator on this described hydraulic gate mainly is made up of loam cake 1, lower cover 2, diaphragm 3, folder cloth rubber cushion, screw 4 and bonded washer 5; Described lower cover 2 is fixed on the impact body for screw 4, described loam cake 1 is for screwing tight in lower cover 2, described diaphragm 3 two ends are that fixed clamp is between loam cake 1 and lower cover 2, be right against diaphragm 3 central positions and offering nitrogen hand-hole 6 and oil inlet hole 7 on the loam cake 1 and on the lower cover 2 respectively, and nitrogen injects the back that finishes for adopting screw plug 8 sealings, and having nitrogen chamber 9 between diaphragm 3 and loam cake 1, is oil pocket 10 between diaphragm 3 and the lower cover 2.

Wherein, because lower cover 2 oil inlet passages-oil inlet hole 7 is a macropore, thereby the big situation of fluid impact, diaphragm 3 is easily damaged.And because accumulator loam cake 1 and lower cover 2 for to link to each other with screw thread, if do not use fastening glue between screw thread, then are difficult for tightening, easily cause nitrogen to leak, if while loam cake 1 becomes flexible, then may be under the oil pressure effect, loam cake 1 flies out and hurts sb.'s feelings.If use fastening glue between screw thread, then cause again and change the diaphragm difficulty.

In addition, described accumulator lower cover 2 impacts body for adopting the sealing of folder cloth rubber cushion (not shown) with rock drill, because folder cloth rubber cushion is damaged easily, causes oil liquid leakage, causes fault.

The model utility content

In view of the above problems, main purpose of the present utility model is to provide a kind of diaphragm not fragile, and sealing and the good safe hydraulic pressure rock drill accumulator of tightness.

To achieve these goals, the utility model has adopted following technical proposals:

Described hydraulic gate accumulator is for comprising shell, interior cover, diaphragm, bonded washer, screw, nut and seal ring; Wherein, described shell be by screw on impact body; Cover is tightened against in the shell for screw thread in described, and puts in this and convex with groove on the impact body one side; Described diaphragm edge is for being clamped between interior cover and the shell, and then the cavity that forms between interior cover and the shell is divided into nitrogen chamber and oil pocket, and in this is described, put and offer and a plurality ofly run through the oil inlet hole that overlaps in this, thereby avoided taking place because of macropore oil shock power causes the situation of diaphragm easy damaged greatly corresponding to the position of impact body oil inlet passage; And described seal ring prevents from because of surge pressure the phenomenon that oil leaks to take place for being installed in the described groove.

In addition, offer the nitrogen hand-hole on described shell, this hand-hole is through this shell, and is the sealing of employing screw plug after this hand-hole nitrogen injection finishes, and installs Packed bonded washer below this screw plug; Described nut is for being tightened against shell and in the inlet place, further nitrogen being sealed.

Compared to existing technology, the utlity model has following beneficial effect:

1) diaphragm long service life, the life-span is improved 15-20 doubly;

2) diaphragm is changed conveniently;

3) the accumulator safety coefficient improves.

Description of drawings

Fig. 1 is an accumulator structure schematic representation of the prior art;

Fig. 2 is the structural representation of hydraulic gate accumulator described in the utility model.

Embodiment

Come hydraulic gate accumulator described in the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Shown in Fig. 1 and Fig. 2, the accumulator of hydraulic gate described in the utility model has changed the structure of using the sealing of folder cloth rubber cushion between existing accumulator diaphragm, lower cover oil inlet hole and lower cover and the impact body, thereby avoided oil or nitrogen leakage under the build-up of pressure, eliminated the danger that loam cake may fly out easily and hurt sb.'s feelings simultaneously under the oil pressure effect owing to poor sealing performance.

Shown in Fig. 2, hydraulic gate accumulator described in the utility model comprises shell 11, interior cover 12, diaphragm 13, screw plug 14, nut 15, bonded washer 16, screw 17 and spring washer 18.

Wherein, described shell 11 is for being fixedly installed on the impact body 20 by screw 17 and spring washer 18, at this shell 11 and on the inwall of impact body 20 1 ends, attacked screw thread, corresponding and in described cover 12 outer walls also be provided with screw thread, thereby make described in cover 12 can be tightened against in shell 11 inner chambers by this screw thread setting; Again, deviating from impact body 20 1 end central position at this described shell 11 runs through and is provided with inwall and attacks threaded nitrogen hand-hole 110, inert nitrogen gas is for injecting by this hand-hole 110, and the inlet 1101 of this hand-hole 110 is located at shell 11 for protruding, and can tighten by screw plug 14 after the inert nitrogen gas injection finishes.

In practical application, between the screw plug 14 that is tightened against the hand-hole place and itself and shell 11, promptly bonded washer 16 is equipped with at the place below this screw plug 14, thereby further hand-hole 110 is sealed.

Described diaphragm 13 is for being clamped between shell 11 and the interior cover 12, and then the cavity between described shell 11 and the interior cover 12 is divided into nitrogen chamber 111 and oil pocket 120, being shaped as with the inwall global shape of shell 11 and interior cover 12 of this described diaphragm 13 conforms to, thereby reduce folding because of under the oil pressure effect, long service life.

Described nut 15 is for to be screwed in the inlet of described hand-hole 110, seals with the further hand-hole 110 to nitrogen injection, prevents that nitrogen from leaking.

Described spring washer 18 for loosening in order to prevent this place's screw 17, thereby guarantees that whole hydraulic gate accumulator is fixed on the impact body 20 for being loaded on below the screw 17 that shell 11 is installed.

In addition, be provided with a plurality of oil inlet holes 121 running through towards interior cover 12 positions of impact body 20 oil inlet passages 201, the oil of coming in from impact body 20 oil inlet passages 201 is for to inject in the oil pocket 120 by this described oil inlet hole 121, the structural design of these a plurality of oil inlet holes 121 has been avoided the problem because of single big oilhole oil-feed impact great efforts, reduced the impact force of pressure oil, further prolonged the working life of diaphragm 13 diaphragm 13.

In addition, convexing with groove 122 on interior cover 12 one sides of impact body 20 oil inlet passages 201, and be equiped with seal ring 19 in this groove 122, sealing circle 19 is an O-ring seals, in order to prevent that the situation that oil leaks under the surge pressure from taking place, and further guaranteed the sealing of whole accumulator.

Again referring to shown in Fig. 2, and hydraulic gate accumulator described in the utility model is described for getting off with impact body 20 directions, in the installation process, this described accumulator at first is that diaphragm 13 is packed in the shell 11 from bottom to up, and then cover 12 in described is screwed in the shell 11, and described seal ring 19 is installed in the grooves 122 of interior cover 12 settings, and then the accumulator after by screw 17 and spring washer 18 assembling being finished at last is fixed on the impact body 20.

Claims

1. hydraulic gate accumulator, it is installed on impact body, and is provided with oil inlet passage on this described impact body, it is characterized in that, and this hydraulic gate accumulator comprises shell, interior cover, diaphragm, screw plug, nut, screw and seal ring; Wherein, described shell is for to be installed on impact body by screw, and deviates from impact body one end central position at this described shell and run through and be provided with inwall and attack threaded nitrogen hand-hole; Cover screwing is in shell in described, and runs through in its position towards the impact body oil inlet passage and to be provided with a plurality of oil inlet holes, and in this cover and on the one side of impact body oil inlet passage, convex with groove; Described screw plug is for being installed in the hand-hole; Described diaphragm is for being clamped between shell and the interior cover, and the cavity between described shell and the interior cover is divided into nitrogen chamber and oil pocket; Described nut is for being screwed in shell and in described hand-hole place; And described seal ring is for being installed in the described groove.

2. according to the described hydraulic gate accumulator of claim 1, it is characterized in that, the bonded washer of sealing usefulness is housed under described screw plug.

3. according to the described hydraulic gate accumulator of claim 1, it is characterized in that, under described screw, be equiped with spring washer.

4. according to the described hydraulic gate accumulator of claim 1, it is characterized in that described seal ring is an O-ring seals.