CN2146469Y

CN2146469Y - Double-function brake

Info

Publication number: CN2146469Y
Application number: CN 92237278
Authority: CN
Inventors: 赵东方; 赵树德; 王述聪
Original assignee: Qingdao No1 Tools Plant
Current assignee: Qingdao No1 Tools Plant
Priority date: 1992-10-28
Filing date: 1992-10-28
Publication date: 1993-11-17
Anticipated expiration: 2002-10-28

Abstract

The utility model relates to a brake with double function of normally opening and normally closing, which is provided with a supporting structure assembly and a driving structure on the basis of the structure of the original normally-closing type electro-hydraulic brake, wherein, the supporting structure assembly and the driving structure can play a normally-opening action. Therefore, a braking apparatus has normally-opening and normally-closing interchangeabilities and is mainly used for a flat flat-hanging running mechanism of a crane. The utility model has the advantages of simple structure, easy operation and control, stability and reliability from deceleration to brake, targeting accuracy when a vehicle is stopped, and convenient operation for users, and achieves the goal of safe production.

Description

Double-function brake

The utility model belongs to a kind of moving difunctional drg of exchange type of opening, close down.

At present, domestic and international applied drg all is the closed type brake structure, promptly crane not the moving device of work schedule be in the band-type brake state.As the domestic YDWZ that has used, YWZ series drg; External West Germany Ed22/5-300/5 type, Japanese HB25A-120A type, HL15F-120F type, the TB Γ 16-80 of former Soviet Union type, Italian BL125-200 type etc.Their characteristics are that braking is rapid, the brake time is short, are suitable for the lifting mechanism of crane; But be used for the crane traveling gear, then have the too quickly shortcoming of braking, make to hang and draw the weight reciprocally swinging, be difficult to precise control and put in place.Recently China Shenyang City's drg factory produce " YWZ2K series difunctional electro-hydraulic brake device (ZL90210115.3), its structure is to be made of steel rope, lever, long and short brake control lever, weight etc.Though this structure genus is often opened, normally closed interchangeable type, and has better effect, in response to longer with steel rope, makes structure comparatively huge, the mounting process complexity makes troubles for application producer.

The utility model its objective is design a kind of simple in structure, often open, normally closed also interchangeable electrohydraulic brake, this structure is installed easily and operation, steadily reliable by decelerating to braking, stopping puts in place accurately.

Its technical scheme of the utility model realizes as follows: its structure is by base, supporting structure assembly, pusher, and lever A, B, pull bar A, B, spring A, B, brake control lever, clearance adjustment mechanism, brake scotch constitute.Base, pusher, lever A, pull bar A, spring A, brake control lever, clearance adjustment mechanism, brake scotch etc. constitute former closed type electrohydraulic brake.The supporting structure assembly is between pusher and brake control lever.Form drive mechanism by lever B, attaching parts, pull bar B, spring B, be positioned at two brake control levers top, and be connected with the push rod of supporting structure assembly.

Its structure of supporting structure assembly comprises parts such as push rod, spring perch B, spring C, small lever, index electromagnet, electromagnet base.Spring C is equipped with in the push rod lower end, is positioned at spring perch B, and the push rod upper end is connected with lever B.Small lever and index electromagnet are equipped to be positioned on the electromagnet base, and small lever is " L " shape, parallel therebetween equipped three straight pins, and one is positioned at small lever drift angle place, is fitted on the spring perch B; One is positioned at outer end, small lever base, and equipped motor magnet core, another root are positioned at small lever straight flange upper end, are the state of touching with push rod, promptly both can contact in succession, can remove disengaging again.Whole small lever can be along freely rotating with the pin that is positioned on the electromagnet base under the motor magnet core drives.

Drive mechanism is made of lever B, attaching parts, pull bar B and spring B, its attaching parts is positioned on the lever B, contacts with lever A to engage, and lever B is connected with the push rod of supporting structure assembly, lever B connects the pull bar B that the other end has equipped spring B, is positioned at the top of two brake control levers.

Description of drawings:

Fig. 1: the utility model planform scheme drawing,

Fig. 2: supporting structure assembly structure shape scheme drawing,

Fig. 3: small lever planform scheme drawing,

Fig. 4: its push rod of supporting structure assembly and small lever work scheme drawing.

Be described in detail its structure content of the utility model and principle of work below in conjunction with embodiment by accompanying drawing:

One, the utility model concrete structure content:

Referring to Fig. 1, its structure is by base (1), supporting structure assembly (2), pusher (3), lever A(4), attaching parts (5), lever B(6), brake control lever (7,13), spring perch A(8), pull bar B(9), spring A(10), pull bar A(11), spring B (12), clearance adjustment mechanism (14), brake scotch formations such as (15), promptly by base (1), pusher (3), lever A(4), brake control lever (7,13), spring perch (8), spring A(10), pull bar A(11), clearance adjustment mechanism (14), on the basis of the former closed type electrohydraulic brake structure that brake scotch (15) constitutes, between pusher (3) and brake control lever (7), be provided with a supporting structure assembly (2).Be provided with by attaching parts (5), lever B(6 in two brake control levers (7,13) tops), pull bar B(9), the drive mechanism formed of spring B (12).

Supporting structure assembly (2) (referring to Fig. 2), its structure are by push rod (17), spring perch B(18), spring C(19), electromagnet base (20), small lever (21), electromagnet (22) constitute.Push rod (17) lower end is equipped with spring C(19), be positioned at spring perch B(18), push rod (17) upper end and lever B(6) the equipped connection.

Small lever (21) is positioned at electromagnet base (20), as shown in Figure 3, it is shaped as " L " type, form by two angle bar (23,24) and three straight pins (25,26,27), three straight pins (25,26,27) are parallel to be positioned between two " L " shape angle bar (23,24), a straight pin (25) is positioned at two angle bar (23,24) upper end, can contact or break away from push rod (17), a straight pin (27) is positioned at two angle bar (23,24) outer end, the end, assembling electromagnetic core (28) is with electromagnet (22) matched together.Another root straight pin (26) is positioned at two angle bar (23,24) drift angle place, and is fixed in the electromagnet base (20), and is free to rotate, is convenient to electromagnetic core (28) and moves up and down.

Drive mechanism (referring to Fig. 1), by attaching parts (5), lever B(6), pull bar B(9), spring B (12) forms, its attaching parts (5) is positioned at lever B(6) on, with lever A(4) plug-in mounting contacts and engages, lever B(6) is connected with the push rod (17) of supporting structure assembly, lever B(6) connect the pull bar B(9 that the other end has equipped spring B (12)), be positioned at the top of two brake control levers (7,13).

Two, its principle of work of the utility model is:

Be to be in normally off when the utility model is not worked; The straight pin (25) of its supporting structure assembly (2) small lever (21) does not contact with push rod (17) disengaging; Not adhesive of electromagnetic core (28) in the electromagnet (22).

When the utility model was worked, power connection, the push rod of pusher (3) just began to rise, and drove lever A(4), promote attaching parts (5), lever B(6), and lever (17) also rise.Treat pusher (3) when push rod rises to range, electromagnet (22) power connection, electromagnetic core (28) rotate thereby drive small lever (21) just by adhesive, make straight pin (25) contact push rod (17).Disconnect pusher (3) switch this moment, and its push rod just descends and resets, and drives lever A(4) descend, its brake control lever (7,13) opens under the effect of both sides clearance adjustment mechanism (14) and spring B (12), makes drg be normally open.In this state, pusher (3) power cut-off just can make crane operation work, but just band-type brake brake during energising.

When sudden power or end-of-job in the course of the work, its electromagnet (22) power supply disconnects, electromagnetic core (28) loses the suction-combining force, at this moment, the straight pin (25) of small lever (21) is at spring C(19) effect under contact to move down by push rod (17) begin to rotate until disengagement lever B(6) drive moving down of push rod (17) and reset, brake control lever (7,13) also moves inward thereupon like this, brake scotch (15) brake sticking brake wheel (16) makes drg be in normally off again.

The utility model is applicable to that mainly the flat hanging of crane walks mechanism, simple in structure, can be normally open at work, guaranteed that the crane walking is convenient, braking is steadily reliable, and stopping puts in place accurately, thereby has also avoided too quickly because of braking for crane operator, hang the accident that the thing swing bumps against and take place, can be by decelerating to braking, safe in operation work.Sudden power when end-of-job or in the work, then drg can be normally off at once, often make open, normally closed exchange, guarantee that crane safety is out of service.The utility model is through implementing to have obtained good result, for the user brings convenience.

Claims

1, a kind ofly often open, normally closed difunctional drg, be by base (1), supporting structure assembly (2), pusher (3), lever A (4), attaching parts (5), lever B (6), brake control lever (7,13), spring perch A (8), pull bar B (9), spring A (10), pull bar A (11), spring B (12), clearance adjustment mechanism (14), brake scotch formations such as (15), it is characterized in that between pusher (3) and brake control lever (7), being provided with a supporting structure assembly (2), be provided with the drive mechanism that can make drg be normally open in two brake control levers (7,13) top.

2, according to claim 1ly often open, normally closed difunctional drg, it is characterized in that described supporting structure assembly (2), its structure is by push rod (17), spring perch B(18), spring C(19), electromagnet base (20), small lever (21), electromagnet formations such as (22), push rod (17) lower end is equipped with spring C(19) be positioned at spring perch B(18), upper end and lever B(6) in succession; Small lever (21) is positioned at electromagnet base (20), and the upper end contacts with push rod (17) and links to each other, the equipped electromagnetic core (28) in the outer end of going to the bottom.

3, according to claim 1,2 describedly often open, normally closed difunctional drg, it is characterized in that the small lever (21) in the described supporting structure assembly (2), its structure is made up of two " L " shape angle bar (23,24) and three straight pins (25,26,27), parallel two " L " shape angle bar (23,24) that is positioned at of three straight pins (25,26,27), a straight pin (25) is positioned at two angle bar (23,24) upper end, can contact or break away from push rod (17); A straight pin (27) is positioned at two angle bar (23,24) outer end, the end, and assembling electromagnetic core (28) is with electromagnet (22) matched together; Another root straight pin (26) is positioned at two angle bar (23,24) drift angle place, and is fixed in the electromagnet base (20), is the turning cylinder of small lever (21).

4, according to claim 1ly often open, normally closed difunctional drg, it is characterized in that described drive mechanism, its structure is by attaching parts (5), lever B(6), pull bar B(9) and spring B (12) constitute, attaching parts (5) is positioned at lever B(6) on, with lever A(4) contact and engage, lever B(6) is connected with the push rod (17) of supporting structure assembly, lever B(6) other end has the pull bar B(9 of equipped spring B (12) in succession), be positioned at the top of two brake control levers (7,13).