CN102562870A

CN102562870A - Double-camshaft brake

Info

Publication number: CN102562870A
Application number: CN2011104437396A
Authority: CN
Inventors: 曲章范; 宋建平; 李春光; 周洪凤
Original assignee: Shandong Pengxiang Automobile Co Ltd
Current assignee: Shandong Pengxiang Automobile Co Ltd
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2012-07-11

Abstract

The invention discloses a double-camshaft brake. The double-camshaft brake is characterized by comprising a base plate (5), two camshaft supports (8), two camshafts (1), two rollers (2), two torsion springs (3), two shoes (4), two suspension spring pins (6) and two return springs (7), wherein the base plate (5) is symmetrically provided with the two shoes (4), the two camshafts (1) are arranged at a connection part between the two shoes (4), one end of each camshaft (1) is matched with the rollers (2) on the two sides, each roller (2) is arranged on each shoe (4), and the other end of each camshaft (1) is connected with a regulating arm (9); and hooks at the two ends of the two return springs (7) are respectively hooked on the two suspension spring pins (6) at the upper ends of the two shoes (4) and the two suspension spring pins (6) at the lower ends of the two shoes (4) so that the two return springs (7), namely an upper return spring and a lower return spring, are formed, and the two camshafts (1) are arranged between the two return springs (7). The double-camshaft brake disclosed by the invention has the advantages of complete functions, large brake moment, small floor area and safe brake.

Description

The twin cam shaft break

Technical field:

The present invention relates to mine vehicle technical field, is a kind of twin cam shaft break specifically, is used to mate the break on the heavy vehicle bridge, can satisfy driving and parking function requirement, and choosing dress is adjusted arm automatically can realize that brake clearance adjusts function automatically.

Background technique:

Along with the development of mine vehicle, the drum brake required braking force of coupling is also increasing, and that the wheel rim space requires is constant, causes braking moment and the vehicle bridge axle load of vehicle bridge and car load not to be complementary, and shows as the braking moment deficiency, and Security reduces.

Summary of the invention:

The objective of the invention is to overcome the deficiency of existing technology; And a kind of twin cam shaft break is provided; Can improve braking moment and take into account the drum brake of row, parking braking and gap adjustment function again, mainly solve the problem of existing mine with the difficult coupling of vehicle large-tonnage, multiaxis (wheel), little wheel rim and break.

Technological scheme of the present invention is: the twin cam shaft break; Its special way is: it comprise base plate, two camshaft stands, two camshafts, two rollers, two torque springs, two secondary shoes, two hang spring pins, two return springs; Establish two secondary shoes on the said base plate symmetrically; The joint of said two secondary shoes is provided with two camshafts; Each camshaft one end cooperates with the roller of both sides, and each roller is installed on the shoes through torque spring, and the hole that the other end of each camshaft passes camshaft stand is connected with the adjustment arm through spline; Be provided with 4 on the said two secondary shoes and hang the spring pin-and-hole; Every secondary shoes has 1 to hang the spring pin-and-hole up and down; Hang installation extension spring pin on the spring pin-and-hole at each; The hook at two return spring two ends is hooked in two that two of two secondary shoes upper ends hang the upper and lower ends of spring pin respectively hangs on the spring pins, form two return springs up and down, two camshafts are positioned in the middle of two return springs.

Twin cam shaft break of the present invention compared with prior art has outstanding substantive distinguishing features and remarkable progress: 1, brake functionality is complete; Consistent with existing drum brake function; Can satisfy service brake, parking braking, brake clearance is adjusted functional requirement automatically; 2, braking moment is big, adopts the dual brake structure, is equivalent to two breaks are merged, and has just increased one times moment in theory, and helps modularization and seriation design; 3, parking braking relies on spring brake cylinder to realize, braking force is big, it is little to take up room; 4, adjust brake clearance automatically, with the abrasives wearing and tearing, brake clearance is adjusted invariable automatically, guarantees brake safe, and abrasives obtains utilizing fully, has improved working life, has reduced the maintenance expense.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the use connection diagram of twin cam shaft break of the present invention.

Embodiment:

In order to understand better and to implement, provide specific embodiment below in conjunction with accompanying drawing and specify twin cam shaft break of the present invention.

Embodiment 1, like Fig. 1, shown in 2, and the twin cam shaft break; Two secondary shoes 4 are installed on base plate 5 symmetrically; The joint of two secondary shoes 4 is provided with two camshafts 1, and each camshaft 1 one end cooperates with the roller 2 of both sides, and each roller 2 is fixed on the shoes 4 through torque spring 3; The hole that the other end of each camshaft 1 passes camshaft stand 8 is connected with adjustment arm 9 through spline, and adjustment arm 9 links to each other with air chamber 10 through bearing pin; On two secondary shoes 4, be provided with 4 and hang the spring pin-and-hole; Every secondary shoes has 1 to hang the spring pin-and-hole up and down; Hang installation extension spring pin 6 on the spring pin-and-hole at each; The hook at two return spring 7 two ends is hooked in two that two of two secondary shoes, 4 upper ends hang spring pin 6 upper and lower ends respectively hangs on the spring pins 6, forming up and down, 7, two camshafts 1 of two return springs are positioned in the middle of two return springs 7; With braking bottom board 5 and camshaft stand 8 respectively through being bolted on the axle housing.

Twin cam shaft break of the present invention, its working principle: service brake: spring cylinder 10 inflations, push rod is released; Push rod drives adjustment arm 9; Adjustment arm 9 drives camshaft 1 and rotates, and camshaft 1 drives roller 2 and shoes 4, and shoes 4 is opened; Brake through brake block and brake drum friction, realize service brake.Parking braking: spring cylinder 10 venting, pressure spring discharges thereupon, drives adjustment arm 9 through push rod, and adjustment arm 9 drives camshaft 1 and rotates, and camshaft 1 drives roller 2 and shoes 4, and shoes 4 is opened, and compresses brake block and brake drum, realizes parking braking.

Claims

1. twin cam shaft break; It is characterized in that: it comprises that base plate (5), two camshaft stands (8), two camshafts (1), two rollers (2), two torque springs (3), two secondary shoes (4), two hang spring pin (6), two return springs (7); Establish two secondary shoes (4) on the said base plate (5) symmetrically; The joint of said two secondary shoes (4) is provided with two camshafts (1); Each camshaft (1) one end cooperates with the roller (2) of both sides; Each roller (2) is installed on the shoes (4) through torque spring (3), and the hole that the other end of each camshaft (1) passes camshaft stand (8) is connected with adjustment arm (9); Be provided with 4 on the said two secondary shoes (4) and hang the spring pin-and-hole; Every secondary shoes has 1 to hang the spring pin-and-hole up and down; Hang installation extension spring pin (6) on the spring pin-and-hole at each; The hook at two return springs (7) two ends is hooked in two that two of two secondary shoes (4) upper end hang the upper and lower ends of spring pin (6) respectively hangs on the spring pins (6), form two return springs (7) up and down, two camshafts (1) are positioned in the middle of two return springs (7).