CN2542887Y - High-capacity hydraulic buffer - Google Patents

Abstract

The utility model relates to a high-capacity hydraulic pressure bumper, which comprises a case body, an upper cover of the case body, a main spring, a piston, an ejector pin, a diaphragm valve, a diaphragm spring, a mandrel, a pressure regulating valve, a return valve, a sealing component, etc., wherein, the case body is internally provided with the main spring which controls the up and down movement of the piston, and the piston is internally provided with the diaphragm valve, the diaphragm valve is internally provided with the diaphragm spring and the mandrel, the lower end of the diaphragm valve is provided with the pressure regulating valve and a pressure regulating valve spring, the pressure regulating valve is internally provided with the return valve, the upper end of the piston is provided with the ejector pin, and the upper cover of the case body is covered on the upper end of the piston and is further combined with the case body, thus taking a shape of column. The utility model is characterized in that the three-stage spring with certain pressure ration controls the counterforce of the pressure regulating valve and the diaphragm valve respectively, and absorbs the shock load formed by bump, so that the harm of the shock load to the railway, vehicles and loading property can be effectively prevented and reduced, and the service life of the railway and vehicles can be prolonged.

Description

Big capacity hydraulic bjuffer

Affiliated technical field

The utility model relates to a kind of big capacity hydraulic bjuffer, belongs to hydraulic machinery and alleviates percussion mechanism.

Background technique

At present, known various damping devices are in order to eliminate the harm of impulsive load, that has now used has an air damp type, spring structure, rubber, the dry friction formula, hydraulic pressure is also arranged, but have the good absorptivity and the buffer of capacity on a large scale, perplexing people always, particularly be applied in the buffer on the railway vehicle, though it is, unsatisfactory always through replacing and renewal of several generations product.

Summary of the invention

In order to overcome above-mentioned deficiency, reduce the injury of impulsive load, especially along with the railway transport high speed, the needs of heavy duty, develop a kind of novel big capacity hydraulic bjuffer that adapts to the railway transport vehicle development situation, to prolonging the working life of railway vehicle, reduce because the loss that railway vehicle and load caused is given in the injury of impulsive load, have certain realistic meaning.

The technological scheme that its technical problem that solves the utility model adopts is: it is made up of big capacity hydraulic bjuffer casing, box cover, main spring, piston, ejection, lamina membranacea valve, template spring, mandrel, pressure regulator valve, reflux valve, Sealing etc., and this device external form is cylindrical.Piston divides upper and lower body, on the top of piston upper body dust filter net is housed, and is fixed with the dust filter net nut, ejection is contained in the top of piston upper body again, add spring washer after, fastening with the ejection tightening nut; Intracoelomic cavity is equipped with the lamina membranacea spring on piston, and the lower end of lamina membranacea spring contacts with the outer of lamina membranacea valve, and Sealing is equipped with in the outside of bottom, contacts with the mandrel that spring seat is housed at the center of lamina membranacea valve, and the mandrel spring is housed outside mandrel; The pressure regulation valve rod is housed in the piston lower body, insert in the groove of lamina membranacea valve lower end pressure regulation valve rod upper end, return valve seat is equipped with in the inboard, lower end of pressure regulation valve rod, be stuck on the spring collar, reflux valve and return valve seat are matched, reflux spring is housed in the outer of reflux valve lower end, contact with the lower end pressure regulator valve, pressure adjusting spring is equipped with in pressure regulator valve upper end, with binder bolt end cap is fixed on the piston lower body bottom, stays four traffic channel holes at the periphery of piston lower body.Then piston upper body and following body and function binder bolt are fastened as one, main spring and piston are packed in the casing, the upper and lower motion of support piston, the periphery that contacts with casing at piston is equipped with Sealing respectively, base oiling bolt is housed in the lower end of casing, be one with box cover and casing bolton at last, formed big capacity hydraulic bjuffer.

The beneficial effects of the utility model are: rational in infrastructure, stable performance, applied range, repair cycle is long, three grades of springs with certain pressure ratio, control the reaction force of its pressure regulator valve and lamina membranacea valve, in order to absorb the formed impulsive load of bump, owing to have three stage pressures, the characteristic of hydraulic cushion vast capacity, be adapted to the high speed of railway vehicle, the needs of heavy duty especially, can effectively prevent and alleviate the harm of impulsive load, prolong the working life of railway vehicle railway vehicle and load.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the big capacity hydraulic bjuffer of a utility model sectional view

Fig. 2 is the piston part sectional view of Fig. 1

Number in the figure

1, ejection 2, dust filter net 3, spring washer

4, dust filter net nut 5, ejection tightening nut 6, piston upper body

7, box cover 8, lamina membranacea spring 9, spring seat

10, mandrel spring 11, mandrel 12, Sealing

13, lamina membranacea valve 14, binder bolt 15, pressure regulation valve rod

16, pressure regulator valve spring 17, return valve seat 18, spring collar

19, reflux valve 20, reflux spring 21, pressure regulator valve

22, binder bolt 23, end cap 24, casing

25, main spring 26, piston lower body 27, base oiling bolt

28, traffic channel hole

Embodiment

See also shown in Figure 1ly, this device is made up of casing, box cover, main spring, piston, end cap, ejection, lamina membranacea valve, lamina membranacea spring, mandrel, pressure regulator valve, reflux valve, Sealing etc., and this device external form is cylindrical.Piston partly divides upper and lower body (6), (26), on the top of piston upper body (6) dust filter net (2) is housed, be fixed with dust filter net nut (4), when guaranteeing that the lamina membranacea valve moves up and down, discharge and suck air cleaner, again ejection (1) is contained in the top of piston upper body (6), after adding spring washer (3), fastening with ejection tightening nut (5), inner chamber in piston upper body (6) is equipped with lamina membranacea spring (8), the lower end of lamina membranacea spring (8) contacts with the outer of lamina membranacea valve (13), and forms the first-level buffer effect.The bottom outside of lamina membranacea valve (13) is equipped with Sealing (12), in the central position of lamina membranacea valve upper end the mandrel (11) that has spring seat (9) is installed and is inserted in the upper end groove of lamina membranacea valve (13) cored axle spring (10) outside mandrel (11); At piston lower body (26) inner chamber pressure regulation valve rod (15) is housed, insert in the groove of lamina membranacea valve (13) lower end pressure regulation valve rod (15) upper end, return valve seat (17) is housed in the inboard, lower end of pressure regulation valve rod (15) to match with reflux valve (19), reflux spring (20) is equipped with in outer in reflux valve (19) lower end, pressure regulator valve (21) is buckled on the lower end of pressure regulation valve rod (15), pressure regulator valve spring (16) is equipped with in the upper end, outer of pressure regulator valve (21), be the effect of level 2 buffering power, with binder bolt (22) end cap (23) is fixed on piston lower body (26) bottom, the periphery in piston lower body (26) upper end leaves four traffic channel holes (28).Then piston upper body (6) and the piston lower body (26) that installs fastened as one with binder bolt (14), (seeing Fig. 2 for details) packs main spring (25) into earlier in the casing (24), again the lower end of piston is inserted in the main spring (25), upper and lower motion behind the support piston pressurized, and form three grades of cushion effect effects.With the periphery that casing (24) and box cover (7) directly contact Sealing (12) is housed respectively at piston, in the lower end of casing (24) base oiling bolt (27) is housed, be one with casing (24) with bolton with box cover (7) at last, form big capacity hydraulic bjuffer.

The basic functional principle of this hydraulic bjuffer is: after two objects clash into mutually, moment formed impulsive load digested, absorbed, alleviate to impact to reach, protect two objects that clash into mutually not to be subjected to or the injury of the load that is hit less.Be subjected to the bump of external active force when ejection after, promptly produce impulsive load, and be delivered to main spring by piston, in impulsive load during greater than the support force of the main spring of support piston, cause piston integral body to move down, the hydraulic oil of compression box intracoelomic cavity, and the size of pressure are directly proportional with the size of the suffered impact force of ejection.At this moment be in the pressure regulator valve of intracoelomic cavity under the piston, under the pressure of spring, with the valve port sealing that is located on the end cap, when the pressure of hydraulic oil during greater than the pressure of pressure regulator valve spring, pressure regulator valve is moving in the unlatching in a flash, valve port is opened, made hydraulic oil produce a drain charge effect by the valve port on the end cap.The drain charge effect itself be exactly a process that absorbs the impulsive load energy.The hydraulic oil of drain charge is along the oil groove passage of pressure regulator valve, and directly enters the space on piston top by four traffic channel holes that are located at the piston lower body.Make on the piston reset under the promotion at main spring after impulsive load disappears and move, the hydraulic oil on compression piston top turns back to the inner chamber of piston lower body by former road, and open the reflux valve that is located at the pressure regulator valve stem cavity, make hydraulic oil get back to casing, finish the one-shot circulation by the return port in pressure regulator valve tapering.

Claims (1)

1, a kind of big capacity hydraulic bjuffer, it is by casing, box cover, main spring, piston, ejection, the lamina membranacea valve, the lamina membranacea spring, mandrel, pressure regulator valve, reflux valve, compositions such as Sealing, be cylinder type, it is characterized in that: dust filter net (2) is housed on the top of piston upper body (6), fixing by dust filter net nut (4), ejection (1) is contained in the top of piston upper body (6), add that spring washer (3) is fastening with ejection tightening nut (5), inner chamber in piston upper body (6) is equipped with lamina membranacea spring (8), its lower end contacts with the outer of lamina membranacea valve (13), the bottom outside of template valve (13) is equipped with Sealing (12), in lamina membranacea valve upper end the mandrel (11) that has spring seat (9) is installed and is inserted in the upper end groove of lamina membranacea valve (13), mandrel spring (10) is housed outside mandrel (11); At piston lower body (26) inner chamber pressure regulation valve rod (15) is housed, insert in the groove of lamina membranacea valve (13) lower end the upper end, in the inboard, lower end of pressure regulation valve rod (15) return valve seat (17) is housed, be stuck on the spring collar (18), reflux valve (19) and return valve seat (17) are matched, reflux spring (20) is equipped with in outer in reflux valve (19) lower end, pressure regulator valve (21) is buckled on the lower end of pressure regulation valve rod (15), pressure regulator valve spring (16) is equipped with in upper end, outer at pressure regulator valve (21), with binder bolt (22) end cap (23) is fixed on the lower end of piston lower body (26), is provided with four traffic channel holes (28) at piston lower body (26); Piston upper body (6) and piston lower body (26) are fastened as one with binder bolt (14); Wherein, main spring (25) is packed in the casing (24), the lower end of piston is inserted in the main spring (25), the upper and lower motion of support piston, directly Sealing (12) is housed the contacting point respectively at piston and casing (24) and box cover (7), in the lower end of casing (24) base oiling bolt (27) is housed, with bolt that box cover (7) and casing (24) is fastening as a whole.