CN201687872U - Air sac type contracting brake - Google Patents

Abstract

The utility model relates to an air sac type contracting brake, which mainly solves the technical problems of reducing structural size, increasing braking performance and the like. The technical scheme includes that the brake is provided with an air sac component, a catch ring is arranged inside an inner cavity of the air sac component, a joint is fixedly arranged on the catch ring, a friction sheet is arranged inside the air sac component, and a return spring is arranged on the inner side of the friction sheet in a fastening manner. The air sac type contracting brake is applicable to braking of various motors of yarn winding machines.

Description

Air sac type brake sticking brake device

Technical field:

The utility model relates to the parts of a kind of drive unit of Yarn winding apparatus, particularly a kind of this drive unit.

Background technique:

The drive unit of Yarn winding apparatus is electric drive, the mode of braking that its motor is commonly used is the electromagnetic brake braking, the main composition of this arrestment mechanism includes Breake Electromagnet and Block brake member, this Breake Electromagnet is by iron core, armature and coil three parts are formed, its Block brake member includes brake wheel, brake shoe and spring etc., the shaft extension of brake wheel and motor is coaxial, during operation, motor connecting power, the coil of Breake Electromagnet is also switched on simultaneously, its armature adhesive, and the spring tension that overcomes brake member makes the brake shoe of break and brake wheel separately, drive motor runs well; When shutting down; the switch of interrupting power circuit or contactor, the motor dead electricity, the coil of Breake Electromagnet also cuts off the power supply simultaneously; its armature separates with iron core under the spring tension effect; and making the brake shoe of break hold brake wheel tightly, motor is braked and stall, above-mentioned electromagnetic brake braking; its braking force is strong; safe and reliable, can be because of sudden power generation accident, but the structural volume of its electromagnetic brake is bigger; the fabricating cost height; because movement speed is higher, the impact force of electromagnet is big, and acts directly on the arrestment mechanism; cause fastening piece loosening easily; damage or malfunctioning and produce fault; noise is big, is difficult to form the required gentle braking function of Yarn winding apparatus, because the retro-speed height; easily produce vibration and impact; thereby influence the operating life of motor bearings, each associated components serious wear must frequently be changed; increase running cost; for keeping the normal function of break, the band-type brake gap of motor needs the periodic maintenance adjustment, further increases operating cost.

The model utility content:

Technical problem to be solved in the utility model is, a kind of air sac type brake sticking brake device is provided, and it can reduce brake structural, and the retarding torque linearity is adjustable, can fast braking and do not produce vibration and impact, and its band-type brake gap can compensate voluntarily.

The technical scheme in the invention for solving the above technical problem is, air sac type brake sticking brake device includes atmospheric control, be characterized in: this break is provided with an air bag component, this air bag component include air bag, baffle ring and joint, this air bag inner chamber is provided with a baffle ring, be installed with a joint that is extended through above-mentioned air bag on this baffle ring, be provided with friction plate in the above-mentioned air bag component, this friction plate inboard is equipped with a Returnning spring.After atmospheric control is sent pressed gas into air bag component, between the baffle ring of this assembly and air bag, form an active chamber, this active chamber expands to the motor axis direction, and drive the tension force that friction plate overcomes Returnning spring and radially move, and make friction plate tightly embrace friction wheel or motor shaft extension on the motor reel, realize braking function; When atmospheric control discharged the active chamber pressed gas, friction plate separated with friction wheel or shaft extension under the effect of Returnning spring tension force, and braking function disappears.

The utility model is simple in structure; volume is less; fabricating cost is low; regulate the air pressure of atmospheric control; the retarding torque linearity is adjustable; can adjust retarding torque arbitrarily; and its regulation range is big, thereby enlarges the Applicable scope of break, during fast braking; under the effect of air bag, can not produce vibration and impact; can protect motor bearings, can prolong the working life of friction plate again, not only the life-span is long but also replacing is convenient for its friction plate; can obviously reduce maintenance cost; lock crack between motor shaft extension or friction wheel and the friction plate can compensate voluntarily owing to the elasticity of air bag, and this gap need not periodic maintenance; adjust; both convenient the use also can further be reduced maintenance expense.

Description of drawings:

Fig. 1 is the utility model air sac type brake sticking brake device schematic representation.

Fig. 2 is the A-A cross-sectional schematic of Fig. 1.

Fig. 3 is an air bag component enlarged diagram () among Fig. 2.

Fig. 4 is an air bag component enlarged diagram (two) among Fig. 2.

Fig. 5 is a friction plate schematic representation among Fig. 1.

Fig. 6 is a B-B cross-sectional schematic among Fig. 5.

Fig. 7 is a Returnning spring schematic representation among Fig. 1.

Embodiment:

With reference to Fig. 1, air sac type brake sticking brake device includes air bag component 1, friction plate 2, Returnning spring 3, friction wheel 4 and atmospheric control 5.

Air bag component 1, shown in Fig. 1,2,3,4, this assembly includes active chamber 10, air bag 11, baffle ring 12 and joint 13, wherein:

Active chamber 10, as shown in Figure 4, be that inner ring surface 121 by chamber inner ring surface 112, left side wall 115, right side wall 116 and the baffle ring 12 of air bag 11 constitutes jointly, the pore 120 of this active chamber 10 and baffle ring 12 is communicated with, the through hole 130 of this pore 120 and joint 13 is communicated with, when non-braking state, active chamber 10 only is the joint clearance of inner ring surface 121 and chamber inner ring surface 112;

Air bag 11, be one to have the ring-type utricule of inner chamber, can make that inner wall surface thereof 111 is manholes by rubber or plastic cement, this internal face 111 is the surfaces that contact with friction plate 2, and its chamber inner ring surface 112, left side wall 115 internal surfaces and right side wall 116 internal surfaces can constitute active chamber 10 jointly; The ring body 122 that its chamber outer ring surface 113 is applying baffle rings 12; Its outer wall 114 is a toroidal surface, this outer wall 114 is fitting surfaces that air bag component 1 is installed in the electric machine stand mounting hole, outer wall 114 also can be fitted in the brake casing (figure does not show) of other setting, this housing is to be installed on the electric machine stand, and outer wall 114 appropriate locations of air bag 11 offer the hole of erection joint 13;

Baffle ring 12 is steel cirque body, includes pore 120, inner ring surface 121, ring body 122 and outer ring surface 123, and baffle ring 12 is that to be positioned at the inner chamber and the air bag 11 of air bag 11 one-body molded; Its pore 120 is opened in appropriate position on the wall of ring body 122, is the gas distribution channel that break closes a floodgate or opens a sluice gate; Its inner ring surface 121 is one of main compositions that constitute break active chamber 10, and bears the pressure of pressed gas; Its outer ring surface 123 is the chamber outer ring surfaces 113 that are fitted in air bag 11, and when air bag bore gas pressure, the air bag 11 that is wrapped in baffle ring 12 became the rigid support of active chamber 10, realizes braking function thereby make air bag 11 promote friction plate 2;

Joint 13, its structure is identical with common gas transmission joint, the pore 120 that its end is provided with through hole 130 and baffle ring 12 is communicated with, this end is installed on the outer ring surface 123 of baffle ring 12, fix with welding manner, it is fixing to be threaded also can to offer screw on the ring body 122 of baffle ring 12, and the other end of joint 13 is provided with screw 132, in order to connect the pneumatic tube of atmospheric control.

Friction plate 2, be to make by NAO brake block resin or other similar materials, be one to be the arcuation lamellar body, shown in Fig. 1,5,6, internal face 111 contact matching of its outer arced surface 21 and air bag 11, intrados 23 corresponding matching of friction plate 2 have the external cylindrical surface 41 of the friction wheel 4 that sets firmly on the motor shaft extension or the periphery that corresponding matching has the motor shaft extension, its intrados 23 is when braking state and friction wheel 4 or motor shaft extension contact matching, and the diameter of intrados 23 is identical with friction wheel 4 diameters or motor diameter of shaft correspondence;

The quantity of friction plate 2 is at least 2, and as shown in Figure 1,2 friction plates 2 are internal faces 111 that symmetry is laid air bag 11, thereby form uniform retarding torque on friction wheel 4 or motor shaft extension; The width of friction plate 2 can be identical with 115,116 width of left and right sidewall of air bag 11;

The intrados 23 of friction plate 2 is provided with mounting groove 22 along circumferentially digging, this mounting groove 22 be positioned at friction plate 2 width to the middle part can act on equably on the friction plate 2 with the tension force of hold reset spring 3, the width of this mounting groove 22 and the degree of depth all should be greater than the steel wire diameter of Returnning spring 3.

Returnning spring 3, be to make by single Spring Steel Wire, as shown in Figure 7, opening-like annular, slightly crooked shape is made at the two end part of opening, be that Returnning spring 3 is that single Spring Steel Wire constitutes opening-like tension spring, compressible Returnning spring 3 embeds the mounting groove 22 of friction plate 2 with it during installation, the back is installed because the effect of the recovery tension force of Returnning spring 3, can make the exterior string face 21 of friction plate 2 be close to the internal face 111 of air bag 11, can keep 11 pairs of friction plates 2 of air bag to transmit gas pressure equably, can keep the location of friction plate 2 on air bag 11 again.

Friction wheel 4, can be the discoid motor shaft extension end face that is fixed on, also can be ring-type is fixed on the motor shaft extension, intrados 23 corresponding matching of its external cylindrical surface 41 and friction plate 2, as shown in Figure 1, when the motor diameter of shaft is enough big, also can utilize the mode of structure of motor shaft extension as friction plate 2 transmitting torques.

Atmospheric control 5, its composition and function are all same or similar with prior art, and this system includes source of the gas 51, selector valve 52 and pipeline and annex, and selector valve 52 is connected with the joint 13 of air bag component 1 by the road.

When break is not worked (non-braking state), friction plate 2 separates with friction wheel 4 or motor shaft extension under the tension force effect of annular Returnning spring 3, and shown in Fig. 1,3, motor runs well; During break work (braking state); this moment, motor need be shut down; the motor dead electricity; the selector valve 52 of atmospheric control 5 switches to the air inlet position, and pressure air enters active chamber 10 from the pore 120 of joint through hole 130 and baffle ring, shown in arrow among Fig. 4; air bag 11 is under the rigid support of baffle ring 12; the internal face 111 of air bag 11 is moved to the electrical axis direction, and make friction plate 2 hold friction wheel 5 or motor shaft extension on the motor shaft tightly, motor is braked and stall.The utility model utilizes the characteristics of air bag, can reduce the break volume and reduce cost, and can improve the adjusting function of break again, suitable applying.

Claims (6)

1. air sac type brake sticking brake device, include atmospheric control, it is characterized in that: this break is provided with an air bag component (1), this air bag component (1) includes air bag (11), baffle ring (12) and joint (13), this air bag (11) inner chamber is provided with a baffle ring (12), be installed with a joint (13) that is extended through above-mentioned air bag (11) on this baffle ring (12), be provided with friction plate (2) in the above-mentioned air bag component (1), this friction plate (2) inboard is equipped with a Returnning spring (3).

2. air sac type brake sticking brake device according to claim 1, the inner ring surface (121) that it is characterized in that chamber inner ring surface (112), left side wall (115), right side wall (116) and the baffle ring (12) of air bag (11) constitutes active chamber (10) jointly, the pore (120) of this active chamber (10) and baffle ring (12) is communicated with, and the through hole (130) of this pore (120) and joint (13) is communicated with.

3. air sac type brake sticking brake device according to claim 1 is characterized in that the quantity of friction plate (2) is at least 2, and symmetry is laid on the internal face (111) of air bag (11).

4. air sac type brake sticking brake device according to claim 1, the intrados (23) that it is characterized in that friction plate (2) is provided with the mounting groove (22) that Returnning spring (3) is installed along circumferentially digging, described mounting groove (22) be positioned at friction plate (2) width to the middle part.

5. air sac type brake sticking brake device according to claim 1 is characterized in that Returnning spring (3) is that single Spring Steel Wire constitutes opening-like tension spring.

6. air sac type brake sticking brake device according to claim 1 is characterized in that intrados (23) corresponding matching of friction plate (2) has the external cylindrical surface (41) of the friction wheel (4) that sets firmly on the motor shaft extension or the periphery that corresponding matching has the motor shaft extension.

Images