CN202579758U

CN202579758U - Normally closed brake for speed reducer

Info

Publication number: CN202579758U
Application number: CN 201220217375
Authority: CN
Inventors: 呙敏娣
Original assignee: JINGZHOU COIN MACHINE MANUFACTURE CO Ltd
Current assignee: JINGZHOU COIN MACHINE MANUFACTURE CO Ltd
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2012-12-05
Anticipated expiration: 2022-05-15

Abstract

The utility model relates to a normally closed brake for a speed reducer, and belongs to the technical field of brake devices for speed reducers. The normally closed brake consists of a mounting plate, springs, a brake cylinder, a piston, an outer friction piece, an inner friction piece, an input shaft and the like; the piston is arranged on the input shaft; the outer friction piece and the inner friction piece are arranged at ends of the piston; the piston is provided with the brake cylinder; a brake oil cavity is formed between the brake cylinder and the piston; the mounting plate with an oil inlet is mounted at the left end of the input shaft; and a bearing is arranged at the right end of the input shaft through a bearing block. A multiple-piece type friction pair structure is adopted, large brake torque can be obtained under the small pressure of a liner, and can be adjusted by changing the number of friction pairs; the springs are connected in parallel during use, so that spring force is increased; the parts are mounted in a brake shell, and the normally closed brake for the speed reducer is an independent built-in brake, is free of being affected by humidity and dust in the outside, is stable in working performance, can realize brake after supply of high-pressure oil is stopped, is reliable in safety performance, and is applicable to any type of engineering machinery required to be braked.

Description

Speed reducer is used normally closed brake

Technical field

The utility model relates to the braking device of a kind of elevator and rotary reducer.Be particularly related to a kind of speed reducer and use normally closed brake, belong to speed reducer braking device technique field.

Background technique

Engineering machinery class speed reducer; Mostly need brake in the course of the work speed reducer; Like the hoisting mechanism on the hoisting of engineering machinery, luffing, walking, swirl gear and harbour, the steamer, so break is main parts on gear-box and speed reducer.And the break of present domestic employing is chip break and dry type friction pair break mostly, and these two kinds of breaks all have the braking number of times and are difficult for too much, and period of braking is not long; Be prone to defectives such as brake failure, but also be not free-standing break, just in speed reducer or gear-box, increased some can produce the component of braking; Therefore there is not standard size; Technological design is complicated, is difficult for assembling and dismounting, costs an arm and a leg.

Summary of the invention

The purpose of the utility model is, a kind of absolute construction, Normally closed type is provided, has built-in hydraulic pressure opening, and the wet type running, the speed reducer that adopts the multi-disc friction pair to brake is used normally closed brake.

The utility model is to realize above-mentioned purpose through following technological scheme:

This speed reducer is made up of mounting plate, spring, break cylinder body, piston, outside friction disc, interior friction plate, bearing support, input shaft and bearing with normally closed brake, it is characterized in that: be manufactured with internal spline respectively on the right ends face of input shaft; Piston is housed on the input shaft; Be equipped with in the piston by small one and large one two springs and the spring that is unified into, on the surface, outer garden of piston the break cylinder body be housed, between break cylinder body and the piston seal ring is housed; And being formed with a break oil pocket, outside friction disc and interior friction plate are equipped with in the end of piston; The left end of input shaft is equipped with mounting plate, and outside framework oil seal is housed on the mounting plate, is manufactured with filler opening on the mounting plate, and the right-hand member of input shaft is equipped with bearing support, and bearing is housed in the bearing support, and outer back-up ring and inner shield ring are equipped with in the outside of bearing; Mounting plate and bearing support and break cylinder body are through hexagon socket head cap screw locking; Described break oil pocket is through the filler opening UNICOM on oil duct and the mounting plate; On the described break cylinder body hexagon socket head cap screw is housed.

The utility model beneficial effect compared with prior art is:

1, avoid the influence of extraneous humidity and dust, stable work in work, it is very little to wear and tear, and in useful life period, generally need not adjustment;

2, the annular working area is big, adopts the multi-disc friction pair structure, can under less liner pressure, obtain bigger braking moment; The spring parallel connection is used, and increases spring force;

3, change the friction pair number and can regulate braking torque, be easy to realize seriation, the standardized production of fricting couple piece;

4, the heat radiation good cooling results can significantly reduce operating temperature, and long service life is generally 3～4 times of dry brake;

5, be normally closed brake, cutoff high oil is promptly realized braking, Security, reliability height;

6, reasonable in design, installation and removal are convenient, reduced manufacture cost.

Description of drawings

Accompanying drawing is the structural representation of speed reducer with normally closed brake.

Among the figure: 1, outside framework oil seal, 2, mounting plate, 3, spring, 4, seal ring; 5, filler opening, 6, the break cylinder body, 7, piston, 8, outside friction disc; 9, interior friction plate, 10, bearing support, 11, outer back-up ring, 12, inner shield ring; 13, input shaft, 14, bearing, 15,16,17, hexagon socket head cap screw, 18, the break oil pocket.

Embodiment

This speed reducer is made up of mounting plate 2, spring 3, break cylinder body 6, piston 7, outside friction disc 8, interior friction plate 9, bearing support 10, input shaft 13 and bearing 14 with normally closed brake.Be manufactured with internal spline respectively on the right ends face of input shaft 13, the internal spline on the left side connects motor or motor, and the internal spline on the right connects speed reducer.Piston 7 is housed on the input shaft 13; Be equipped with in the piston 7 by small one and large one two springs and the spring 3 that is unified into; On the surface, outer garden of piston 7 break cylinder body 6 is housed, between break cylinder body 6 and the piston 7 seal ring 4 is housed, between break cylinder body 6 and the piston 7 and be formed with a break oil pocket 18.Outside friction disc 8 and interior friction plate 9 are equipped with in the end of piston 7, can reach the quantity that braking moment is confirmed outside friction disc 8 and interior friction plate 9 as required.The left end of input shaft 13 is equipped with mounting plate 2, and outside framework oil seal 1 is housed on the mounting plate 2, is manufactured with filler opening 5 on the mounting plate 2, and the right-hand member of input shaft 13 is equipped with bearing support 10, and bearing 14 is housed in the bearing support 10, and outer back-up ring 11 and inner shield ring 12 are equipped with in the outside of bearing 14; Mounting plate 2 is locked through hexagon socket head cap screw 15 and hexagon socket head cap screw 16 with bearing support 10 and break cylinder body 6.Described break oil pocket 18 is through filler opening 5 UNICOMs on oil duct and the mounting plate 2; Hexagon socket head cap screw 17 (referring to accompanying drawing) is housed on the described break cylinder body 6.

It is that this break is braking state under normal conditions that this speed reducer uses the working procedure of normally closed brake.When the oil duct of hydraulic system high pressure oil on filler opening on the mounting plate 25 and break cylinder body 6 enters into break oil pocket 18; And when reaching break cracking pressure value; Piston 7 is under the effect of high pressure oil; To the direction pressure spring 3 of mounting plate 2, piston 7 and outside friction disc 8 are disengaged, break is in opening state.When hydraulic system pressure unloaded, the piston 7 in the break cylinder body 6 set back under the elastic force effect of spring 3, made piston 7 compress outside friction disc 8 and reached braking state, realized braking function.In the break gear oil must be arranged, make its lubricated outside friction disc 8, interior friction plate 9, bearing 14, outside framework oil seal 1 makes break open and brake all runnings under the wet type state.Two groups of seal rings 4 between break cylinder body 6 and the piston 7 are used to seal the high pressure oil in the break oil pocket 18, prevent the leakage of high pressure oil; Outside framework oil seal 1 on the input shaft 13 is used to prevent that the leakage of gear oil and dust from getting into.Break cylinder body 6 is connected with mounting plate 2 through hexagon socket head cap screw 15; Be connected with bearing support 10 through hexagon socket head cap screw 16; Make whole break form one independently whole, and can be connected on any engineering machinery speed reducer or gear-box that needs break through input shaft 13 and hexagon socket head cap screw 17 on the break cylinder body 6.All component of break are installed in the brake shell, are built-in braking device independently, are applicable to any all kinds of engineering machinery that need braking.

The above is the embodiment of this model utility; The above-mentioned flesh and blood that illustrates not the utility model constitutes restriction; Under the those of ordinary skill of technical field after having read this specification, can make an amendment or be out of shape above-mentioned embodiment, and do not deviate from the essence and the scope of the utility model.

Claims

1. a speed reducer is used normally closed brake; It is made up of mounting plate (2), spring (3), break cylinder body (6), piston (7), outside friction disc (8), interior friction plate (9), bearing support (10), input shaft (13) and bearing (14), it is characterized in that: be manufactured with internal spline respectively on the right ends face of input shaft (13); Piston (7) is housed on the input shaft (13); Be equipped with in the piston (7) by small one and large one two springs and the spring (3) that is unified into; On the surface, outer garden of piston (7) break cylinder body (6) is housed; Between break cylinder body (6) and the piston (7) seal ring (4) is housed, and is formed with a break oil pocket (18), outside friction disc (8) and interior friction plate (9) are equipped with in the end of piston (7); The left end of input shaft (13) is equipped with mounting plate (2); Outside framework oil seal (1) is housed on the mounting plate (2); Be manufactured with filler opening (5) on the mounting plate (2); The right-hand member of input shaft (13) is equipped with bearing support (10), and bearing (14) is housed in the bearing support (10), and outer back-up ring (11) and inner shield ring (12) are equipped with in the outside of bearing (14); Mounting plate (2) and bearing support (10) are locked through hexagon socket head cap screw (15) and hexagon socket head cap screw (16) with break cylinder body (6); Described break oil pocket (18) is through filler opening (5) UNICOM on oil duct and the mounting plate (2); Hexagon socket head cap screw (17) is housed on the described break cylinder body (6).