CN2293404Y - Oil and water two purpose double-arm free-forging electric hydraulic hammer - Google Patents

Abstract

The utility model belongs to the field of the equipment of metal forming machinery, which relates to a new electric hydraulic hammer using the liquid in liquid-gas accumulating stations as working medium to drive a hammer head. The utility model comprises a hammer body, a falling part, a liquid air cylinder, a liquid inlet valve, a liquid outlet valve, an operating part and a boring base. The utility model is characterized in that in the liquid air cylinder, the inner part of the original air cylinder is provided with an upper support, a lower support and a working cylinder which is communicated with the part of the liquid inlet valve through a passage to form a sealing working chamber; the original insurance air cylinder, a cylinder cap, a piston and a distance bar are reserved; an additional air chamber is additionally arranged; a sealing air chamber B is formed between the working cylinder and the air cylinder body; a liquid inlet and outlet pipeline is provided with a medium pressure buffer and a low pressure buffer; the dimension D of the piston of the falling part of the new single-arm free-forging electric hydraulic hammer is smaller, and a hammer bar, a hammer head, the upper anvil and the lining are the same as the original structure; the hammer bar of the falling part of the new double-arm free-forging electric hydraulic hammer is in the flexible structure of the thin hammer bar; a double-cone sleeve and the lining are arranged between the thin hammer bar and a conical sleeve.

Description

The novel electric liquid hammer of the dual-purpose single both arms open die forging of profit

The utility model belongs to the forging machinery and equipment field, and particularly a kind of is the novel electric liquid hammer of single both arms open die forging (die forging) that working media drives tup work with the save up strength liquid at station of liquid-gas.

In the prior art, steam empty dual-purpose single both arms open die forging (die forging) hammer, partly form by cylinder part, hammer body part, anvil block part, actuating element and the empty dual-purpose guiding valve of steaming.It is the work of power drive tup with steam or compressed air, and its weak point is that efficient is low, energy consumption is high, is the forging hammer of power with steam, and its thermal efficiency only is 2-4%, and contaminated environment.

Latter stage in the sixties, Germany LASCO company has developed KGK250 type hydraulic power head, Czech, Britain, the U.S. and China have all developed energy-saving electric liquid hammer in succession, their common feature is with existing cylinder part, falls part and actuating element is all destroyed, redesign is made unit head, is fallen part and actuating element, appellation " head exchange technology ".By facts have proved, therefore adopt the pilot valve structure, the tup blow speed is low, operating flexibility is relatively poor, every technical performance apart from the original steam hammer still has a segment distance, and in order to satisfy the requirement of Blow Energy of Hammer size, being forced to increases 30-50% with the existing weight that falls part, not only reduced blow efficiency like this, returned the basis and caused bigger vibrational loading.The 25KJ die forging electricity liquid hammer that Germany LASCO company develops, the former steam and air stamping hammer of the weight ratio of anvil block has increased by 50%, i.e. 30t, but also below anvil block, increased vibration absorber and inertial mass, so and lose that.

The purpose of this utility model be to provide a kind of simple in structure, functional reliability strong, flexible operation, processability is good, the technology versatility strong, the novel electric liquid hammer of the dual-purpose single both arms open die forging of profit (die forging) of high efficiency, low, the energy-conservation material-saving again of cost.

Technical solution of the present utility model is on the basis of the existing empty dual-purpose single both arms open die forging of steaming (die forging) hammer, utilize former cylinder block to make the dual-purpose liquid cylinder of oil pump into, utilize the empty dual-purpose guiding valve group of former steaming to make the dual-purpose combination valve of profit into, utilize the former part that falls that part makes the electric liquid hammer of single both arms open die forging (die forging) into that falls.It comprises hammer body part, falls part, liquid cylinder part, combination valve part, actuating element, boring anchor part, it is characterized in that liquid cylinder part is provided with upper and lower support and working cylinder in former cylinder block, hammer stem, piston, guide pin bushing, seal group, flange, gland are housed in the working cylinder, partly communicate with combination valve by passage, constitute the working chamber of sealing, keep former relief cylinder, cylinder cap, piston and distance bar, set up auxiliary chamber, form airtight air chamber B between working cylinder and the cylinder block, it communicates with the inner chamber A of working cylinder; Combination valve partly comprises valve body, valve pocket, guiding valve, valve rod, guide pin bushing, flange, gland, seal group, have many row's apertures at valve pocket with the inlet place of communicating, have a plurality of square holes with the passage intersection, advance middle slow weighing apparatus and the low pressure buffer device of pressing is installed on the Drainage pipe; The novel electric liquid hammer of single armed open die forging fall part except that the dimension D of piston is dwindled, hammer stem, tup, go up anvil, lining is identical with former electric liquid hammer structure; The hammer stem that falls part of the novel electric liquid hammer of both arms open die forging is thin hammer stem flexible structure, between thin hammer stem and the tapered sleeve two-taper ferrule, lining is arranged.

The utility model has the advantages that: only need to former electric liquid hammer original cylinder part, fall part, operation part is improved design a little, promptly become novel electric liquid hammer by steaming empty dual-purpose single both arms open die forging (die forging) hammer, it has the empty dual-purpose single both arms open die forging of former steaming (die forging) and hammers all advantages into shape: promptly simple in structure, flexible operation, use are reliable, good moldability, wide, the small investment of technology versatility, energy-conservation, the material-saving effect is remarkable, free from environmental pollution.Being that the forging hammer of power can realize energy-conservation more than 90% with steam, is that the ram of hammer of power can save energy more than 75% with compressed air.Make steaming hollow hammer the investment of electric liquid hammer into, only use the energy-conservation expense of 1.5-2 promptly recyclable; Update for the empty dual-purpose single both arms flat-die hammer of old-fashioned steaming, former design drawing, technological design, die model, worker are pressed from both sides measurer etc. and all can be utilized again, thereby can reduce production costs significantly and a large amount of go into power and material resources, shorten and produce the preparatory period, be the energy saving technical reconstruction of the existing dual-purpose single both arms flat-die hammer of profit and the reliable approach that updates and provide simple, be fit to national conditions.

Fig. 1, the novel electric liquid hammer structural representation of the dual-purpose single armed open die forging of profit.

Fig. 2, the novel electric liquid hammer structural representation of profit dual-purpose double-arm open die forging.

Fig. 3, the novel electric liquid hammer liquid cylinder part-structure schematic diagram of the dual-purpose single armed open die forging of profit.

Fig. 4, the novel electric liquid hammer liquid cylinder part-structure schematic diagram of profit dual-purpose double-arm open die forging.

Fig. 5, the novel electric liquid hammer hydraulic pressure of the dual-purpose single both arms open die forging of profit advance, the tapping valve structural representation.

Fig. 6, the novel electric liquid hammer of the dual-purpose single armed open die forging of profit fall the part-structure schematic diagram.

Fig. 7, the novel electric liquid hammer of profit dual-purpose double-arm open die forging fall the part-structure schematic diagram.

Accompanying drawings embodiment: the novel electric liquid hammer of the dual-purpose single both arms open die forging of profit (die forging), it comprises hammer body part 1, fall part 2, liquid cylinder part 3, combination valve part 4, actuating element 5, cobalt seat part 6 is (referring to Fig. 1,2), wherein 1,5, the structure of 6 three parts is identical with existing empty dual-purpose single both arms open die forging (die forging) hammer structure of steaming, below only with regard to 2,3,4 three parts are described in detail: liquid cylinder part 3 is set up upper support 11a in former cylinder block 12, lower support 11c and by nut 16 and working cylinder 11 joining together tightly, hammer stem 7 is housed in the working cylinder 11, piston 8, guide pin bushing 14, positioning sleeve 15, seal group 20, insurance bucket 19, flange 18, gland 17, and communicate with combination valve part 4 through passage 13, liquid cylinder part 3 still keeps former relief cylinder 11b, cylinder cap 10, piston 10a and distance bar 9 are newly established auxiliary chamber 10b; Herringbone seal group 20 between working cylinder 11 and the cylinder block 12 makes it to form airtight air chamber B, on upper support 11a, have the duct, gas working chamber B is communicated with working cylinder 11 inner chamber A, working chamber 11 upwards promotes piston 8 and hammer stem 7 by fluid pressure, and the pressed gas of gas working chamber B is further compressed, and pressure rises to P1 by P0.When 4 commutations of combination valve part, the moment step-down of working cylinder 11A cavity pressure, and the gas of gas working chamber B expands rapidly, forces piston 8 to descend at a high speed together with hammer stem 7, finishes and once hits work done, finishes so repeatedly and forges each operation.For reduce to greatest extent, the compression shock of Drainage pipe and the pipeline judder that causes, press slow weighing apparatus 7a and low pressure buffer device 8a on advancing Drainage pipe, being equipped with, and same cylinder part 3 tightly is installed together, and solved a key technology difficult problem (shown in Fig. 3,4) of advancing the Drainage pipe judder.

Advance, tapping valve part 4 also is contained in the empty dual-purpose guiding valve body opening of former steaming, and make into, oil drain passage 13 communicates with the C chamber by the duct of lower support 11c, as shown in Figure 6.Advance, discharge slide valve part 4 comprises valve body 21, slide valve buckle 27, guiding valve 26, valve rod 29, valve gap 34.Have upper and lower two rounds on the circumference of valve pocket 27, last round is the inlet opening 24 that is connected with inlet 31, and following row is and advances the outage 23 that leakage fluid dram 22 communicates.The guiding valve 26 of fixedlying connected with valve rod 29 is installed in the slide valve buckle 27, guiding valve 26 is hollow barrel-type, sealed at both ends up and down gap and be carved with relief groove structure 30, be formed with clearance seal sliding fit insert with slide valve buckle 27 internal faces, the centre is the recessed surface that is condensed to inwards, and forms cavity 25 between slide valve buckle 27 medial surfaces.Guiding valve 26 is fixedlyed connected with valve rod 29, form enough big axial perforation discharge opeing duct 33 in it, be tightly connected by guide pin bushing 35, gland 37, ring flange 36, chev(e)ron ring 39 between valve gap 34 and the valve rod 29, when guiding valve 26 is positioned at the lower position, inlet opening 24 and advance outage 23 and coexist in the cavity 25, two holes communicate, and liquid mediums enter rapidly in the working cylinder 11, compressed gas continues to be compressed in gas working chamber A and the B, forces piston 8 upwards to promote together with hammer stem 7; When guiding valve 26 is positioned at upper limit position, inlet 24 is shut by guiding valve 26, and advance leakage fluid dram 22, and the cavity of resorption C of working cylinder 11 communicates, liquid is from advancing leakage fluid dram 22, duct 13 flows back to oil (water) case with 33 moments of outage, gas working chamber A, the compressed gas of B expands rapidly, force piston 8 to hit at a high speed downwards together with hammer stem 7, guiding valve 26 is in the bound position repeatedly, then finishing tup upwards promotes or hits downwards, so repeatedly, finish tip-tap, little beating, semicontinuous strike, strike and middle " returning hammer " are waited each operation fully, can also make tup stop at (referring to Fig. 5) on any position simultaneously; The new-type electric liquid hammer of single armed open die forging fall part 6 except that piston 8 directly through D dwindles according to the size dimension of hitting power, hammer stem 7, tup 40, go up anvil 39, lining 41 and all hammer structure identical (referring to Fig. 6) into shape with the existing dual-purpose single both arms open die forging of sky (die forging) that steams; The lining of making by thin stem copper coin 41 that a two-taper ferrule 43 and an axial grooving are arranged between the hammer stem that falls part 67 of both arms flat-die hammer and the tapered sleeve 42, be convenient disassembly two-taper ferrule 43 1 sides trench diggings (referring to Fig. 7), hammer stem 7 changes carefully, other structure also structure with former flat-die hammer is identical, hammer stem 7 adopts flexible thin hammer stem rigidity syndeton, reduce hammer stem bending resistance the moment of inertia EJ to greatest extent, in the off-centre of tup 40 is forged, reduce the bending stress value significantly, improved the service life of hammer stem.

Claims (2)

1, the novel electric liquid hammer of the dual-purpose single both arms open die forging of a kind of profit, comprise hammer body part (1), fall part (2), liquid cylinder part (3), combination valve part (4), actuating element (5), boring anchor part (6), it is characterized in that liquid cylinder part (3) sets up in former cylinder block (12), lower support (11a), (11c) and working cylinder (11), hammer stem (7) is installed in the working cylinder (11), piston (8), guide pin bushing (14), seal group (20), flange (18), gland (17), communicate with combination valve part (4) by passage (13), constitute the fluid working cavity of sealing, keep former relief cylinder (11 _b), cylinder cap (10), piston (10a) and distance bar (9), set up auxiliary chamber (10 _b), forming airtight air chamber B between working cylinder (11) and the cylinder block (12), its inner chamber A with working cylinder (11) communicates; Combination valve part (4) comprises valve body (21), valve pocket (27), guiding valve (30), valve rod (29), guide pin bushing (35), flange (36), gland (37), seal group (39), have aperture (24) at valve pocket (27) with inlet (31) place of communicating, have square hole (23) with passage (13) intersection, advance middle slow weighing apparatus (7a) and the low pressure buffer device (8a) of pressing is installed on the Drainage pipe; The novel electric liquid hammer of single armed open die forging fall part (2) except that the dimension D of piston (8) is dwindled, hammer stem (7), tup (40), last anvil (39), lining (41) are identical with former electric liquid hammer structure.

2, the novel electric liquid hammer of single both arms open die forging according to claim 1, the hammer stem (7) of (2) is thin hammer stem flexible structure to it is characterized in that falling partly by the novel electric liquid hammer of both arms open die forging, the dimension D of piston (8) is dwindled, between thin hammer stem (7) and the tapered sleeve (42) two-taper ferrule (43), lining (41) are arranged, other is identical with former electric liquid hammer structure.

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