CN2171724Y

CN2171724Y - Hydraulic push automatic compensation brake

Info

Publication number: CN2171724Y
Application number: CN 93231085
Authority: CN
Inventors: 葛锡坤
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-26
Filing date: 1993-05-26
Publication date: 1994-07-13
Anticipated expiration: 2003-05-26

Abstract

The utility model relates to a hydraulic push automatic compensation brake, which changes the former brake which is outer embrace type into side clamp type brake. The structure of the hydraulic push automatic compensation brake comprises two strips of brake arms with brake pads, a draw rod hydraulic device with an automatic compensation device, a spring device, a long lever and a short lever. When the power is switched on the hydraulic device drives the long lever. The long lever drives the short lever which is connected with the brake arm and the draw rod and the automatic compensation device which are connected between the brake arm and the short lever, making the two brake arms isolate. When the power is switched off, the spring device makes the two brake arms approach and clamp on through the long lever, the short lever, the draw rod and the brake compensation device. The hydraulic push automatic compensation brake has safe and steady brake, and the hydraulic push automatic compensation brake is no need to adjust during the life time.

Description

Hydraulic push automatic compensation brake

The utility model relates to a kind of break, is the safety installations that is used on lifting, transportation, metallurgy, mine, the building machinery.

Existing external-contacting brake is to hold Brake drum tightly by the brake shoe or the strap of the brake, plays braking action.Its shortcoming is: 1. braking is not steady, and impact force is big, poor reliability; 2. friction disc wear inequality, utilization ratio is low; 3. need in the using process often to adjust; 4. poor radiation; 5. the hook phenomenon of slipping is serious, and safety coefficient is low, causes the accident easily.

The purpose of this utility model is: overcome the deficiency of prior art, provide a kind of braking steadily reliable, the break that need not adjust in the using process.

The utility model is that the hem type with prior art changes side clamp type into, adopts the automatic indemnifying measure of hydraulic transmission, spring energy-storage, friction facing, and concrete structure comprises:

1. left and right sides brake arm, lower end respectively by the axle hinge joint on base.

2. pull bar, an end links on left brake arm upper shaft, and the star-wheel of the brake compensating device on the other end and the right brake arm links to each other by screw thread.

3. two braking pads tangle respectively on the inboard corresponding position of left and right sides brake arm by axle.

4. hydraulic pressure installation, the lower end is fixed on the base, the push rod of upper end by the axle hinge joint on long lever.

5. spring assembly, the lower end tangles on base by axle, and the spring push-rod of upper end is hinged on the middle part of long lever by the square joint axle.

6. the in succession push rod of spring assembly of the in succession push rod of hydraulic pressure installation of long lever, an end, middle part, the other end links to each other with right brake arm with short lever by axle, and employing bolt and short lever are fixedly connected.

7. short lever is hinged on the upper end of right brake arm by axle, and links to each other with long lever by bolt.

8. automatic compensator, adopt ball type or carve piece formula directional clutch, inner star-wheel is connected with pull bar by screw thread, outer ring surface has bar-shaped trough, be fixed on finger on the short lever with regard to inserting in bar-shaped trough, the star-wheel that inside is connected with pull bar passes the square joint axle and the nut that are contained in short lever and joins.

9. adjust and locate the screw rod of left and right sides brake arm spacing, be contained on the base, end points withstands on respectively on the fixing bolt of left and right sides brake arm.

Advantage of the present utility model is: 1. braking force is linear relationship with playing thrust, impacts little, braking process steadily 2. friction facing need not adjustment in whole useful life period, can keep constant wearing clearance, braking moment is constant.3. perfect heat-dissipating, the working life of having improved Braking efficiency and friction plate.4. reduced slide hook distance, operation and maintenance is convenient.

Description of drawings:

Fig. 1: the utility model embodiment plan view.

Fig. 2: the utility model embodiment's left view.

Fig. 3: the utility model embodiment plan view.

Fig. 4: the utility model embodiment automatic compensator sectional view.

The A-A sectional view of Fig. 5: Fig. 4.

As Fig. 1, Fig. 2 and shown in Figure 3, left side brake arm 24, right brake arm 11 are hinged on the base 17 by axle 18 and axle 16 respectively, and withstand on by base-mounted bolt 14,20 on the fixing bolt 15 and bolt 19 of brake arm bottom, the left and right sides, adjust the spacing of left and right sides brake arm.Pull bar 4 left ends are connected on the axle 2 of left brake arm 24 upper ends, and right-hand member links to each other by screw thread with the inside star-wheel of automatic compensator.On the inboard opposite position of left and right sides brake arm,, four bolts also respectively are housed on the brake arm of the left and right sides to adjust two braking pads by axle 21 and axle 13 hinged brake shoe 22 of difference and brake shoes 12.The spring bracket of spring assembly 23 is hinged on the base 17 by axle 26, and spring push-rod is hinged on the middle part of long lever 3 by axle 28, and push rod passes axle 28 and connects one and adjust nut.Hydraulic pressure installation 23 lower ends are fixed on the base 17, and the upper end push rod is hinged on the left end of long lever 3 by axle 1.Short lever 7 is hinged on the right brake arm 11 by axle 5 and is connected and fixed with long lever 3 by bolt 6 and bolt 9.

As Fig. 4, shown in Figure 5, automatic compensator adopts the ball type directional clutch, in the wedge cavity that outer shroud 10 and inner star-wheel are 28 ball 30 is housed.Pull bar 4 is threaded with star-wheel 28, and star-wheel 28 has extension pipe, stretches out from clutch and passes the axle 8 that is contained on the short lever 7, joins with the nut 29 that plays the role of positioning.Have strip groove on the clutch outer shroud 10, finger 27 passes 7 insertings of plate-like short lever in strip groove.

This brakeage process is such, after hydraulic pressure installation 23 energisings, push rod promotes long lever 3, it is common along axle 5 rotations to drive short lever 7, the outer shroud 10 that this moment, the finger 27 on the short lever 7 was stirred automatic compensator is relaxation state, then

brake arm

11,24 drive brake shoes 12,22 in the left and right sides are opening-wide state, and at this moment machinery can be operated with the need.After hydraulic pressure installation 23 outages, spring assembly 25 drives a long lever 3 and short lever 7 edge axle 5 backward rotation, at this moment, finger 27 is stirred outer shroud 10 and is locking state with star-wheel 28, star-wheel 28 screws along pull bar 4, and left and right

sides brake arm

11,24 is progressively close, tightly clamp brake disc up to two braking pads 12,22, play braking action.

Claims

1, a kind of hydraulic drive compensates break automatically, it is characterized in that: it has following structure:

(1), left and right sides brake arm [11,24], the lower end is hinged on respectively on the base [17] by axle [16,18].

(2), pull bar [4], an end are hinged on left brake arm [24] upper shaft [2], and the star-wheel [28] of the automatic compensator on the other end and the right brake arm [11] links to each other by screw thread.

(3), brake shoe [12,22] is hinged on respectively on the inboard corresponding position of left and right sides brake arm [11,24] by axle [13,21].

(4), hydraulic pressure installation [23], the lower end is fixed on the base [17], and the push rod of upper end is hinged on the long lever [3] by axle [1].

(5), spring assembly [25], the lower end is hinged on the base [17] by axle [26], and the spring push-rod of upper end is hinged on the middle part of long lever [3] by axle [28].

(6), the in succession push rod of hydraulic pressure installation [23] of long lever [3], an end, the in succession push rod of spring assembly [25] of middle part, the other end links to each other with right brake arm [11] with short lever [7] by axle [5], and employing bolt [6,9] and short lever [7] fix.

(7), short lever [7] is hinged on the upper end of right brake arm [11] by axle [5], and is fixedly connected by bolt [6,9] and long lever [3].

(8), automatic compensator, adopt ball type or carve piece formula directional clutch, inner star-wheel [28] is connected with pull bar [4] by screw thread, outer shroud [10] surface has bar-shaped trough, be fixed on finger [27] on the short lever [7] with regard to inserting in bar-shaped trough, the star-wheel [28] that is connected with pull bar [4] passes the axle [8] that is contained on the short lever and joins with nut [29].

(9), adjust and locate the screw rod [14,20] of left and right sides brake arm [11,24] spacing, be contained on the base [17], end points withstands on respectively on the fixing bolt [15,19] of left and right sides brake arm [11,24] bottom.

2, break according to claim 1 is characterized in that: automatic compensator is the ball type directional clutch, in the wedge cavity between star-wheel (28) and outer shroud (10) ball (30) is housed.