CN201461807U - Closed type oil cylinder of brake clearance of hydraulic grease injection adjusting brake calipers - Google Patents

Abstract

The utility model discloses a closed type oil cylinder of a brake clearance of hydraulic grease injection adjusting brake calipers and relates to a petroleum drill brake caliper technology. A piston is installed in a cylinder body; a disc spring group is installed at the left of the piston and pressed by a left cylinder cover; and the right end of the piston is provided with an adjusting plunger, a seal ring, a dustproof ring, and the like. When high-pressure oil is filled in a working cavity at the right of an oil cylinder, the piston is pushed and pressed, disc springs are stressed to the left, the distance between two cylinder lugs of the oil cylinder is reduced, and the brake is released; and the distance between the two cylinder lugs of the oil cylinder is increased during decompression to brake. A small adjusting cavity is arranged between the adjusting plunger and the piston, the grease can be injected into the adjusting cavity by a one-way grease injection valve according to the requirement, and the adjusting plunger extends out to compensate a stroke to offset the increase of a brake clearance after abrasion. By adopting the adjusting plunger, the closed type oil cylinder can adjust the brake clearance, and the utility model has simple structure, convenient adjustment, low cost, high technical requirement and good effect.

Description

The enclosed oil cylinder of braking clamp braking gap is regulated in the hydraulic pressure greasing

Technical field

The utility model relates to oil drilling machinery hydraulic disc brake technical field, is a kind of enclosed oil cylinder of regulating the compensating cylinder stroke with hydraulic pressure oiling fat.

Background technique

The method that the hydraulic disc brake enclosed oil cylinder of current oil drilling machinery usefulness generally adopts the outer bull gear formula of cylinder body to regulate the compensating cylinder stroke is regulated braking gap, its cylinder structure complexity, and manufacture difficulty is big, regulates inconvenience.

The model utility content

The purpose of this utility model is to disclose the enclosed oil cylinder that the braking clamp braking gap is regulated in a kind of hydraulic pressure greasing, utilize the hydraulic pressure grease injecting mode to regulate the compensating cylinder stroke, and adjusting braking clamp braking gap, adopt the hydraulic pressure greasing to regulate the stroke of compensating cylinder, can accurately control the stroke of oil cylinder, and can regulate compensating operation at any time, guarantee the sensitivity and the reliability of brake response.

For achieving the above object, technical solution of the present utility model is:

The enclosed oil cylinder of braking clamp braking gap is regulated in a kind of hydraulic pressure greasing, comprises cylinder body, piston, dish spring group, pilot plunger, cylinder ear, is connected with external equipment by two cylinder ears; Its cylinder body left end seals with cylinder cap, and cylinder cap left-external side face is provided with a cylinder ear, and cylinder body right-hand member wall central part has through hole, and cylinder body right-hand member wall is provided with hydraulic fluid port; In the cavity volume of cylinder body and cylinder cap composition, be provided with dish spring group, cross piston; Dish spring group is placed on outside the cylinder of a cross piston left side, between cross piston left surface and cylinder cap; The right cylinder of cross piston stretches out cylinder body right-hand member wall central through bore; Cross piston right-hand member is provided with the blind hole of opening to the right, is provided with pilot plunger in the blind hole, and pilot plunger and blind hole are suitable; Pilot plunger right-hand member head is provided with another cylinder ear; Pilot plunger left end center is axially arranged with blind hole, and the pilot plunger right part is provided with unidirectional grease pouring valve, and unidirectional grease pouring valve and pilot plunger blind hole are connected, and unidirectional grease pouring valve is opened to pilot plunger blind hole direction;

For regulating the chamber, regulate the chamber and communicate between the blind pore wall of pilot plunger left end head and cross piston right-hand member with the pilot plunger blind hole;

Between the right flank of cross piston and the cylinder body right-hand member wall inboard is active chamber, and active chamber communicates with hydraulic fluid port.

Described enclosed oil cylinder, its described cross piston are the cylinders that there is the boss platform at the middle part, and its central shaft section is a cross; The external diameter of boss platform and cylinder body cavity volume internal diameter are suitable; Dish spring group is placed on outside the cylinder of a cross piston left side, between the boss platform left surface and cylinder cap of cross piston, and is pushed down by cylinder cap; Cross piston right-hand member cylinder stretches out cylinder body right-hand member wall central through bore, and suitable with the central through bore internal diameter, and cross piston right-hand member cylinder Zhou Yuan is provided with seal ring and dust ring; Cross piston right-hand member cylinder is provided with the blind hole of opening to the right, is provided with pilot plunger in the blind hole, is provided with seal ring and dust ring between pilot plunger and the blind hole;

Pilot plunger right part pin shaft hole upper left side is provided with unidirectional grease pouring valve; Be the adjusting chamber between the blind pore wall of pilot plunger left end head and cross piston right-hand member cylinder;

In cross piston radial outer circumferential face and inboard wall of cylinder block connecting part, be provided with seal ring, seal ring contacts with inboard wall of cylinder block, is active chamber between the boss platform right flank of cross piston and the cylinder body right-hand member wall inboard.

The beneficial effects of the utility model are:

Can make things convenient for the stroke of finely regulating compensating cylinder---regulate the braking gap of braking clamp.Adopted pilot plunger that cylinder structure is simplified, manufacture cost reduces greatly, and brake is sensitive reliable.Organization plan of the present utility model generally uses on PSK company leading products, and is respond well.

Description of drawings

Fig. 1 is the enclosed cylinder structure schematic representation that the braking clamp braking gap is regulated in hydraulic pressure greasing of the present utility model;

Fig. 2 is that the utility model is applied to the hydraulic control disk type brake enclosed structural representation in when pincers.

Embodiment

The utility model is regulated the compensating cylinder stroke for the enclosed oil cylinder of hydraulic pressure greasing adjusting braking clamp braking gap with hydraulic pressure oiling fat, regulates the braking clamp braking gap.Be to be brake weight with inner disc spring force, oil pressure is a releasing of brake when pressing the dish spring, is brake during the oil pressure pressure release.Its structure is seen Fig. 1, regulate the enclosed cylinder structure schematic representation of braking clamp braking gap for hydraulic pressure greasing of the present utility model, wherein, unidirectional grease pouring valve 12, pilot plunger 13, seal ring 14, cross piston 15, seal ring 16, cylinder body 17, dish spring group 18, cylinder cap 20, cylinder ear 21a, 21b, blind hole 22.

Cylinder body 17 left ends are with cylinder cap 20 sealings, and cylinder cap 20 left-external side faces are provided with a cylinder ear 21b, and cylinder body 17 right-hand member wall central parts have through hole, and cylinder body 17 right-hand member walls and sidewall have hydraulic fluid port.In the cavity volume that cylinder body 17 and cylinder cap 20 are formed, be provided with dish spring group 18, cross piston 15.Cross piston 15 is cylinders that there is the boss platform at the middle part, and its central shaft section is a cross.The external diameter of boss platform and cylinder body 17 cavity volume internal diameters are suitable.Dish spring group 18 is placed on outside the cross piston 15 left cylinders, between the boss platform left surface and cylinder cap 20 of cross piston 15, and is pushed down by cylinder cap 20; Cross piston 15 right-hand member cylinders stretch out cylinder body 17 right-hand member wall central through bores, and suitable with the central through bore internal diameter, and cross piston 15 right-hand member cylinder Zhou Yuan are provided with seal ring 14 and dust ring.Cross piston 15 right-hand member cylinders are provided with the blind hole of opening to the right, are provided with pilot plunger 13 in the blind hole, and pilot plunger 13 and blind hole are suitable, and are provided with seal ring 14 and dust ring.Pilot plunger 13 right-hand member heads are provided with a cylinder ear 21a.Pilot plunger 13 left end centers are axially arranged with blind hole 22, and pilot plunger 13 right part pin shaft hole upper left sides are provided with unidirectional grease pouring valve 12, and unidirectional grease pouring valve 12 and central blind hole 22 are connected, and unidirectional grease pouring valve 12 is opened to blind hole 22 directions.For regulating the chamber, regulate the chamber and communicate between the blind pore wall of pilot plunger 13 left end heads and cross piston 15 right-hand member cylinders with blind hole 22.

In cross piston 15 outer radial periphery faces and cylinder body 17 inwall connecting parts, be provided with seal ring 16, seal ring 16 contacts with cylinder body 17 inwalls, is active chamber between the boss platform right flank of cross piston 15 and the cylinder body 17 right-hand member wall inboards, and active chamber communicates with hydraulic fluid port.

The enclosed oil cylinder of braking clamp braking gap is regulated in hydraulic pressure greasing of the present utility model, is connected with external equipment by two cylinder ear 21a, 21b.

The utility model behaviour in service and gap adjustment principle are seen Fig. 2, wherein, and brake disc 1, tong holder 4, brake block 5, supporting axle 6, tong arm 7, lower bearing pin 8, middle bearing pin 9, upper pin 10.

Embodiment shown in Figure 2, regulate the hydraulic control disc brake calliper of the enclosed oil cylinder assembling of braking clamp braking gap for using the greasing of the utility model hydraulic pressure, tong holder 4 is fixed, brake disc 1 is done fore-and-aft direction and is rotatablely moved, supporting axle 6 relative fixed are on tong holder 4, two tong arms 7 are hinged on supporting axle 6 two by middle bearing pin 9 respectively, two cylinder ear 21a of oil cylinder, 21b is hinged by the upper end of upper pin 10 and two tong arms 7 respectively, two brake block 5 are hinged by lower bearing pin 8 and two tong arms, 7 lower ends respectively. and oil cylinder presses cross piston 15 to overcome the elastic force of dish spring group 18 by the oil-filled back of pressing of hydraulic fluid port, cross piston 15 is pressed to left, to design attitude, at this moment two cylinder ear 21a, distance shortens between the 21b, driving two tong arms 7 is the fixed support swing with middle bearing pin 9 hinged contacts, at this moment two tong arms, 7 lower ends drive two brake block 5 and outwards move, braking gap e increases, the standard clearance of braking gap e is that 0.5mm. passes through unidirectional grease pouring valve 12 injection greases, make and regulate the cavity pressure increase, pilot plunger 13 is overhanging, two brake block 5 reach reference value with the gap of brake disc 1, at this moment are that pine is stopped---do not brake.

After the oil pressure pressure release, active chamber pressure reduces to 0, cross piston 15 will move to right-hand under the effect of dish spring group 18, make distance increase between two cylinder ear 21a, the 21b, two tong arms, 7 upper ends are outwards moved, drive two tong arms, 7 lower ends and brake block 5 and move, brake block 5 contact brake discs 1 brake---enclosed pincers pressure release brake to brake disc 1.

Continuous increase along with the positive braking number of times, brake block 5 will produce wearing and tearing, and brake disc 1 also has wearing and tearing, and braking gap e value will increase, at this moment make pilot plunger 13 overhanging by injecting grease, to remedy the increase of braking gap e value to unidirectional grease pouring valve 12. make the braking gap e value value of maintaining the standard.Implement normal braking.

Claims (2)

1. the enclosed oil cylinder of a hydraulic pressure greasing adjusting braking clamp braking gap comprises cylinder body, piston, dish spring group, pilot plunger, cylinder ear, is connected with external equipment by two cylinder ears; It is characterized in that:

The cylinder body left end seals with cylinder cap, and cylinder cap left-external side face is provided with a cylinder ear, and cylinder body right-hand member wall central part has through hole, and cylinder body right-hand member wall is provided with hydraulic fluid port; In the cavity volume of cylinder body and cylinder cap composition, be provided with dish spring group, cross piston; Dish spring group is placed on outside the cylinder of a cross piston left side, between cross piston left surface and cylinder cap; The right cylinder of cross piston stretches out cylinder body right-hand member wall central through bore; Cross piston right-hand member is provided with the blind hole of opening to the right, is provided with pilot plunger in the blind hole, and pilot plunger and blind hole are suitable; Pilot plunger right-hand member head is provided with another cylinder ear; Pilot plunger left end center is axially arranged with blind hole, and the pilot plunger right part is provided with unidirectional grease pouring valve, and unidirectional grease pouring valve and pilot plunger blind hole are connected, and unidirectional grease pouring valve is opened to pilot plunger blind hole direction;

For regulating the chamber, regulate the chamber and communicate between the blind pore wall of pilot plunger left end head and cross piston right-hand member with the pilot plunger blind hole;

The right inwall of the right flank of cross piston and cylinder body is an active chamber between the inboard, and active chamber communicates with hydraulic fluid port.

2. enclosed oil cylinder according to claim 1 is characterized in that: described cross piston is the cylinder that there is the boss platform at the middle part, and its central shaft section is a cross; The external diameter of boss platform and cylinder body cavity volume internal diameter are suitable; Dish spring group is placed on cylinder periphery, a cross piston left side, between the boss platform left surface and cylinder cap of cross piston, and is pushed down by cylinder cap; The right cylinder of cross piston stretches out cylinder body right-hand member wall central through bore, and suitable with the central through bore internal diameter, and the right cylinder Zhou Yuan of cross piston is provided with seal ring and dust ring; The right cylinder of cross piston is provided with the blind hole of opening to the right, is provided with pilot plunger in the blind hole, is provided with seal ring and dust ring between pilot plunger and the blind hole;

Pilot plunger right part pin shaft hole upper left side is provided with unidirectional grease pouring valve; Be the adjusting chamber between the blind pore wall of pilot plunger left end head and cross piston right-hand member cylinder;

In cross piston radial outer circumferential face and inboard wall of cylinder block connecting part, be provided with seal ring, seal ring contacts with inboard wall of cylinder block, is active chamber between the boss platform right flank of cross piston and the cylinder body right-hand member wall inboard.

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