CN206617474U - A kind of self-boosting type drum brake with clearance self-regulating mechanism device - Google Patents
A kind of self-boosting type drum brake with clearance self-regulating mechanism device Download PDFInfo
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- CN206617474U CN206617474U CN201621357786.3U CN201621357786U CN206617474U CN 206617474 U CN206617474 U CN 206617474U CN 201621357786 U CN201621357786 U CN 201621357786U CN 206617474 U CN206617474 U CN 206617474U
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Abstract
The utility model discloses a kind of self-boosting type drum brake with clearance self-regulating mechanism device.Also include clearance self-regulating mechanism device, back-plate assembly is arranged on vehicle frame, wheel cylinder assembly is fixedly mounted on the middle part of back-plate assembly end face, preposition hoof assembly and rearmounted hoof assembly are arranged on the both sides of back-plate assembly end face by identical stage clip mechanism, clearance self-regulating mechanism device is arranged on preposition hoof assembly and rearmounted hoof assembly and supports pin connection with the hoof on back-plate assembly, preposition hoof assembly and rearmounted hoof assembly upper end are all connected to the hoof supporting pin on back-plate assembly, connect whole to carry out clearance self-regulating by clearance self-regulating mechanism device between preposition hoof assembly and rearmounted hoof assembly lower end.The utility model can adjust automatically drum-shoe clearance, drum-shoe clearance can be accurately adjusted in real time, and avoid the inconvenience adjusted manually and inaccuracy.
Description
Technical field
The utility model is related to the self-boosting type drum brake with tune gap ratchet assembly of hydraulic pressure shake-up, especially relates to
And a kind of self-boosting type drum brake with clearance self-regulating mechanism device.
Background technology
Load-carrying being used in hydraulic pressure self-boosting type drum brake larger, on speed slower engineering truck and trailer, it is desirable to make more
It is dynamic effective, steady.
Self-boosting type drum brake brake efficiency is high, is 2 times from shoe type drum brake brake efficiency of common neck, this
It result under equal condition of work, self-boosting type drum brake is compared than other kinds of drum brake, abrasion is more
To be serious；When wear extent is excessive and wearing clearance between brake drum and friction plate again less than compensation when can cause：
First, idle stroke is excessive：When being embodied directly in brake, the amplitude of service brake stroke can increase；
2nd, braking time is long：The excessive result directly resulted in of braking distance is exactly to brake the time arrived needed for identical speed
The effect of short time short distance stop can not be reached when length, especially brake hard；
3rd, required liquid measure increase：Friction plate is contacted or even is extruded with brake drum during braking can just realize braking, when
When the gap of brake drum and friction plate is excessive, the piston stroke in wheel cylinder assembly will increase, required hydraulic oil also with
Increase；
What the self-boosting type drum brake being arranged in the market on automobile was used be all manual regulation brake drum and
There is more defect in the method in friction plate gap, the method that drum-shoe clearance is adjusted manually：
First, adjust difficult：Brake is arranged on automobile, to adjust drum-shoe clearance, it is necessary to which driver or staff lie prone
To underbody or rise automobile, instrument is visited into bottom plate hole inside tire and stirs the gear for adjusting gap ratchet assembly, it is very inconvenient；
2nd, the bad control of the amplitude of accommodation：Manual toggle adjust gap ratchet assembly gear when, regulation footage number it is bad
Control, can directly be reflected in the drum-shoe clearance after mixing up not of uniform size：Drum-shoe clearance is excessive, does not reach the effect of adjustment, effectively
Action time is short, increase regulation number of times；Drum-shoe clearance is too small, it is easy to produces and dawdles between hoof drum, influence performance, reduces
The service life of hoof, drum；
3rd, regulating cycle can not be determined：Manually the cycle of regulation self-boosting type drum brake be usually driver master worker with
Determined by means of oneself experience, if the road conditions in whole running car cycle are more stable, maintenance period is about the same；
But often automobile will not be always maintained at identical road conditions in the process of moving, always have various accident or change occur,
Simultaneously, the abrasion condition of brake-shoe and brake drum can be also not quite similar, and maintenance period also just not necessarily, is so easy to
Occur being braked using the heavier brake that weares and teares, or not may wear to the degree of wear for wanting maintenance also, improve and safeguard into
This.
Utility model content
The problem of brake clearance is difficult is adjusted for the left-hand seat of vehicle in the prior art of solution, the purpose of this utility model is just
It is to propose a kind of self-boosting type drum brake with clearance self-regulating mechanism device, is using self-boosting type drum brake
During, can in time, accurately adjust drum-shoe clearance.
To achieve the above object, the technical solution of the utility model is：
The utility model include back-plate assembly, brake drum, preposition hoof assembly, rearmounted hoof assembly, brake-shoe baffle plate and
Wheel cylinder assembly, in addition to clearance self-regulating mechanism device, back-plate assembly are arranged on vehicle frame, and wheel cylinder assembly is fixed
Installed in the middle part of back-plate assembly end face, preposition hoof assembly and rearmounted hoof assembly are arranged on by identical stage clip mechanism
The both sides of back-plate assembly end face, clearance self-regulating mechanism device be arranged on preposition hoof assembly and rearmounted hoof assembly and with braking
Hoof support pin connection on floor pan assembly, preposition hoof assembly and rearmounted hoof assembly upper end are all connected to the hoof on back-plate assembly
Supporting pin, connects to carry out clearance self-regulating between preposition hoof assembly and rearmounted hoof assembly lower end by clearance self-regulating mechanism device
It is whole.
Described preposition hoof assembly includes the preposition tendons of beef, mutton or pork, preposition Brake shoe lining, preposition upper return spring and installation
The preposition shoe plate of support connection function, one end of preposition upper return spring are played between the preposition tendons of beef, mutton or pork and preposition Brake shoe lining
It is connected on the preposition tendons of beef, mutton or pork, other end clasp joint to hoof supporting pin；Described rearmounted hoof assembly includes the rearmounted tendons of beef, mutton or pork, rearmounted brake-shoe
Friction plate, rearmounted upper return spring and support connection function is played between the rearmounted tendons of beef, mutton or pork and rearmounted Brake shoe lining
Rearmounted shoe plate, one end of rearmounted upper return spring is connected on the rearmounted tendons of beef, mutton or pork, other end clasp joint to hoof supporting pin；Described braking
Wheel cylinder assembly includes wheel cylinder and piston mandril, and wheel cylinder is bolted on back-plate assembly end face, brakes
The piston mandril apical grafting of wheel cylinder is at the fluting of the preposition tendons of beef, mutton or pork inside edge of preposition hoof assembly；The preposition tendons of beef, mutton or pork and the rearmounted tendons of beef, mutton or pork
Middle part is connected to back-plate assembly by stage clip mechanism, and the upper end of the preposition tendons of beef, mutton or pork and the rearmounted tendons of beef, mutton or pork abuts against hoof supporting pin
Multi-diameter shaft on, connected between the lower end of the preposition tendons of beef, mutton or pork and the rearmounted tendons of beef, mutton or pork by tune gap ratchet assembly in clearance self-regulating mechanism device
Connect.
Described stage clip mechanism includes stage clip pull bar, press spring base and stage clip, and it is total that stage clip pull bar one end is connected to back-plate
Into, the other end through the preposition tendons of beef, mutton or pork or the connection of the rearmounted tendons of beef, mutton or pork and press spring base, press spring base and the preposition tendons of beef, mutton or pork or the rearmounted tendons of beef, mutton or pork it
Between stage clip pull bar on be set with stage clip.
Described clearance self-regulating mechanism device includes adjusting gap ratchet assembly, adjusts gap bracing wire assembly, bracing wire guide holder, adjusts gap to dial
Plate and tune gap plate return spring, bracing wire guide holder are hingedly mounted on by sleeve pin in the middle part of the preposition tendons of beef, mutton or pork of preposition hoof assembly,
Preposition upper return spring one end end is axially through sleeve pin formation clasp joint, and it is approximate L shaped plate to adjust gap plate, L shaped plate
Linked up with by gib head in the bottom of the preposition tendons of beef, mutton or pork at middle part so that formed and be hinged between tune gap plate and the preposition tendons of beef, mutton or pork, the one of L shaped plate
Hold as the moving tooth end with adjusting gap ratchet assembly to be connected, the other end of L shaped plate is as hanging hole end, and hanging hole end is located at moving tooth end
Top；Gap bracing wire assembly is adjusted to include being located at draw ring end, drag hook end and the bracing wire at two ends respectively, draw ring end fixed cover is supported in hoof
On pin, drag hook end is connected to the upper through hole for adjusting gap plate hanging hole end, and bracing wire bypasses the guide groove connection of bracing wire guide holder outer side edges
Between draw ring end and drag hook end so that draw ring end and drag hook end are synchronized with the movement along bracing wire；Adjust the end hook of gap plate return spring one
The lower through-hole for adjusting gap plate hanging hole end is connected to, the other end is connected to the bottom of the rearmounted tendons of beef, mutton or pork.
Described tune gap ratchet assembly includes hoof lower end return spring, adjusts gap swivel nut, adjusts gap ratchet and axle sleeve, and hoof lower end is returned
Position both ends of the spring distinguish clasp joint on the preposition tendons of beef, mutton or pork and the rearmounted tendons of beef, mutton or pork, axle sleeve and adjust gap swivel nut be connected respectively to the preposition tendons of beef, mutton or pork, after
The bottom of the tendons of beef, mutton or pork is put, adjusts gap ratchet to include positioned at the middle gear and the coaxial major axis for being fixed in gear two ends with moving tooth
And short axle, adjust gap swivel nut to be socketed in by screw thread on tune gap ratchet major axis, axle sleeve is socketed in tune gap ratchet short axle, gear and institute
The moving tooth end connection for adjusting gap plate is stated, adjusts and stirs moving tooth under the effect of gap plate and rotated with moving gear so that adjust gap ratchet and tune
Gap swivel nut in axial direction produces motion.
When the piston mandril of described wheel cylinder is applied to the preposition tendons of beef, mutton or pork, the preposition tendons of beef, mutton or pork forward move by side, drives and adjusts gap
Side is moved forward for bracing wire in bracing wire assembly, and adjusting, the pulling force downward gap plate hanging hole end of gap bracing wire assembly movement is small size to front side
Rotation, adjusts the moving tooth separation on gap plate moving tooth end and described tune gap ratchet assembly；When the piston mandril of wheel cylinder is not made
When using the preposition tendons of beef, mutton or pork (when adjusting the pulling force revocation of gap bracing wire assembly movement), in the presence of gap plate return spring is adjusted, adjust
Sidespin goes back to position backward at gap plate hanging hole end, adjusts gap plate moving tooth end to stir the moving tooth rotation adjusted on gap ratchet assembly.
Described axle sleeve, gap swivel nut is adjusted to be provided with open slot between the preposition tendons of beef, mutton or pork, rearmounted tendons of beef, mutton or pork connecting end surface respectively, it is preposition
The tendons of beef, mutton or pork are embedded into the open slot of axle sleeve, and the rearmounted tendons of beef, mutton or pork are embedded into the open slot for adjusting gap swivel nut.
When the moving tooth rotation adjusted on gap ratchet assembly is stirred downwards at described tune gap plate moving tooth end, adjust gap swivel nut and adjust gap
The motion of axial separation is produced between the major axis of ratchet by screw thread.
The working method of the utility model clearance self-regulating is：
Inputted in the wheel cylinder of the wheel cylinder assembly after oil pressure, the braking tendons of beef, mutton or pork of wheel cylinder assembly and preposition hoof assembly
The piston mandril being in contact promotes preposition hoof assembly to drive tune gap ratchet assembly and rearmounted hoof assembly to move along brake drum so that
Friction plate and brake drum contact are braked, while adjusting gap bracing wire assembly to haul the plate motion of tune gap so that adjust gap plate and tune
Moving tooth on gap ratchet assembly is separated.
During the wheel cylinder assembly pressure release, preposition hoof assembly, tune gap ratchet assembly and rearmounted hoof assembly are respectively respective
Return spring in the presence of return, adjust gap plate return in the presence of gap plate return spring is adjusted, adjust gap plate moving tooth electricity
Pressure table is stirred downwards tune gap ratchet gear and rotated, and tune gap ratchet and tune the gap swivel nut is in axial direction separated, and is used to
Compensate the wear extent between brake drum and friction plate.
If after the forward and backward friction disc wear for putting hoof assembly, the gap X increases existed between brake drum and friction plate.Gap X
When increase is smaller, adjusts gap plate and adjust the moving tooth on gap ratchet assembly to be separated distance less so that adjust the moving tooth end of gap plate
The tooth pitch of a moving tooth is not separated with the moving tooth of original position, then original position is still toggled it to when adjusting gap plate return
Moving tooth, adjusts the gear position on gap ratchet assembly to keep constant.
When X increases in gap are larger, adjust gap plate and adjust the moving tooth phase separation on gap ratchet assembly in larger distance so that adjust gap
The moving tooth end of plate and the moving tooth separating distance of original position are not less than the tooth pitch of a moving tooth, then when adjusting gap plate return not
The moving tooth of original position can be toggled it to, but toggles it to a moving tooth of original position, so that adjusting the gear on gap ratchet assembly
Rotated, adjust gap swivel nut and adjust axial distance increase between gap ratchet, therefore add forward and backward put between hoof assembly lower end
Spacing, the wear extent between brake drum and friction plate is compensated with this, the self-regulated in gap is realized.
The beneficial effects of the utility model：
The utility model realizes the timely regulation of drum-shoe clearance, compensate for the regulation that brings of manual lash regulation it is difficult,
The defect that the bad control of the amplitude of accommodation, regulating cycle can not be determined.
The utility model realizes the accurate regulation of drum-shoe clearance, adjusts the number of gear teeth for adjusting gap ratchet in gap ratchet assembly to be
It can change, according to the requirement in specific gap and the structure of brake during automobile use, by calculating and experiment can be with
Number of gear teeth accurately is determined, when drum-shoe clearance exceeds claimed range, plate meeting handsetting gear rotation, and then reach accurately
Maintain the purpose of drum-shoe clearance.
The utility model manually adjusts gap relative to current, drum-shoe clearance can be accurately adjusted in real time, and eliminate
The inconvenience and inaccuracy of gap adjusting mechanism adjustment drum-shoe clearance are adjusted with instrument on vehicle.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic three dimensional views of the present utility model.
Fig. 3 is Fig. 1 A-A directions sectional view.
Fig. 4 is the schematic three dimensional views of floor pan assembly (5).
Fig. 5 is the schematic three dimensional views of gap adjusting mechanism assembly (8).
Fig. 6 is the schematic three dimensional views of preposition hoof assembly (16) and rearmounted hoof assembly (1).
Fig. 7 is the partial sectional view in Fig. 1 B-B directions.
Fig. 8 is the operation principle of self-boosting type drum brake of the utility model equipped with band gap self-adjusting mechanism device
Figure.
In figure：1 rearmounted hoof assembly, 2 brake-shoe baffle plates, 3 rearmounted upper return springs, 4 brake drums, 5 back-plate assemblies, 6
Adjust gap plate return spring, 7 hoof lower end return springs, 8 tune gap ratchet assemblies, 9 tune gap swivel nuts, 10 tune gap ratchets, 11 axle sleeves, 12
Tune gap plate, 13 bracing wire guide holders, 14 wheel cylinder assemblies, 15 tune gap bracing wire assemblies, 16 preposition hoof assemblies, 17 hoof supporting pins,
18 stage clip pull bars, 19 press spring bases, 20 stage clips, the 21 preposition tendons of beef, mutton or pork, the 22 rearmounted tendons of beef, mutton or pork, 23 preposition Brake shoe linings, 24 rearmounted systems
Dynamic shoe friction plate, 25 preposition upper return springs, 26 piston mandrils, 27 moving teeth.
Embodiment
The utility model is described in further detail with specific implementation below in conjunction with the accompanying drawings.
As depicted in figs. 1 and 2, brake of the present utility model includes back-plate assembly 5, brake drum 4, preposition hoof assembly
16th, rearmounted hoof assembly 1, brake-shoe baffle plate 2 and wheel cylinder assembly 14, in addition to clearance self-regulating mechanism device, back-plate are total
It is arranged on into 5 on vehicle frame, wheel cylinder assembly 14 is fixedly mounted on the middle part of the end face of back-plate assembly 5, wheel cylinder assembly
14 take-off lever is connected at the fluting of the preposition inside edge of hoof assembly 16, and preposition hoof assembly 16 and rearmounted hoof assembly 1 pass through
Identical stage clip mechanism is arranged on the both sides of the end face of back-plate assembly 5, and clearance self-regulating mechanism device is arranged on preposition hoof assembly
16 and rearmounted hoof assembly 1 on and be connected with the hoof supporting pin 17 on back-plate assembly 5, preposition hoof assembly 16 and rearmounted hoof assembly
1 upper end is all connected to the hoof supporting pin 17 on back-plate assembly 5, as shown in figure 4, hoof supporting pin 17 is positioned at total to back-plate
Into the top of 5 end faces, brake-shoe baffle plate 2 is arranged in hoof supporting pin 17, between preposition hoof assembly 16 and the rearmounted lower end of hoof assembly 1
Connect whole to carry out clearance self-regulating by clearance self-regulating mechanism device.
As shown in fig. 6, preposition hoof assembly 16 includes the preposition tendons of beef, mutton or pork 21, preposition Brake shoe lining 23, preposition upper return bullet
Spring 25 and the preposition shoe plate that support connection function is played between the preposition tendons of beef, mutton or pork 21 and preposition Brake shoe lining 23, it is preposition
One end of upper return spring 25 is connected on the preposition tendons of beef, mutton or pork 21, other end clasp joint to hoof supporting pin 17；After rearmounted hoof assembly 1 includes
Put the tendons of beef, mutton or pork 22, rearmounted Brake shoe lining 24, rearmounted upper return spring 3 and rubbed installed in the rearmounted tendons of beef, mutton or pork 22 and rearmounted brake-shoe
The rearmounted shoe plate of support connection function is played between pad 25, one end of rearmounted upper return spring 3 is connected on the rearmounted tendons of beef, mutton or pork 22, separately
One end clasp joint is to hoof supporting pin 17.The middle part of the preposition tendons of beef, mutton or pork 21 and the rearmounted tendons of beef, mutton or pork 22 is connected to back-plate by stage clip mechanism
Assembly 5, the upper end of the preposition tendons of beef, mutton or pork 21 and the rearmounted tendons of beef, mutton or pork 22 is abutted against on the multi-diameter shaft of hoof supporting pin 17, and the preposition tendons of beef, mutton or pork 21 are with after
Put and connected by the tune gap ratchet assembly 8 in clearance self-regulating mechanism device between the lower end of the tendons of beef, mutton or pork 22.
As shown in figure 1, wheel cylinder assembly 14 includes wheel cylinder and piston mandril 26, wheel cylinder is bolted
On the end face of back-plate assembly 5, the apical grafting of piston mandril 26 of wheel cylinder is in the inner side of the preposition tendons of beef, mutton or pork 21 of preposition hoof assembly 16
At the fluting at edge.
Hoof baffle plate 2 and tune gap bracing wire assembly 15, which are arranged on the step of hoof supporting pin 17, passes through the preposition upper He of return spring 25
Rearmounted upper return spring 3 is fixed in hoof supporting pin.
As shown in figure 3, stage clip mechanism includes stage clip pull bar 18, press spring base 19 and stage clip 20, the connection of the one end of stage clip pull bar 18
In back-plate assembly 5, the other end is connected through the preposition tendons of beef, mutton or pork 21 or the rearmounted tendons of beef, mutton or pork 22 and press spring base 19, and press spring base 19 is with before
Put suit stage clip 20 on the stage clip pull bar 18 between the tendons of beef, mutton or pork 21 or the rearmounted tendons of beef, mutton or pork 22.
As depicted in figs. 1 and 2, clearance self-regulating mechanism device includes adjusting gap ratchet assembly 8, adjusts gap bracing wire assembly 15, bracing wire
Guide holder 13, tune gap plate 12 and tune gap plate return spring 6, as shown in fig. 7, bracing wire guide holder 13 is hinged peace by sleeve pin
On the pin-and-hole at the middle part of the preposition tendons of beef, mutton or pork 21 of preposition hoof assembly 16, the preposition upper one end end of return spring 25 is axially passed through
Sleeve pin formation clasp joint.It is approximate L shaped plate to adjust gap plate 12, and the middle part of L shaped plate is linked up with the preposition tendons of beef, mutton or pork 21 by gib head
Portion so that formed and be hinged between tune gap plate 12 and the preposition tendons of beef, mutton or pork 21, one end of L shaped plate is as adjusting gap ratchet assembly 8
The moving tooth end of connection, the other end of L shaped plate is as hanging hole end, and hanging hole end is located above moving tooth end, and hanging hole end is provided with position respectively
Two through holes above and below.Gap bracing wire assembly 15 is adjusted to include being located at the draw ring end at two ends, drag hook end respectively and be connected to draw ring
Bracing wire between end and drag hook end, draw ring end fixed cover is located at preposition hoof assembly 16, rearmounted hoof assembly in hoof supporting pin 17
Between 1 and brake-shoe baffle plate 2, drag hook end is connected to the upper through hole for adjusting the hanging hole end of gap plate 12, and bracing wire bypasses bracing wire guide holder 13
The guide groove of outer side edges is connected between draw ring end and drag hook end so that draw ring end and drag hook end are synchronized with the movement along bracing wire；Adjust gap
One end clasp joint of plate return spring 6 is to the lower through-hole for adjusting gap plate 12 hanging hole end, and the other end is connected to the bottom of the rearmounted tendons of beef, mutton or pork 22.
As shown in figure 5, adjusting gap ratchet assembly 8 to include hoof lower end return spring 7, adjust gap swivel nut 9, adjust gap ratchet 10 and axle sleeve
11, clasp joint is distinguished on the preposition tendons of beef, mutton or pork 21 and the rearmounted tendons of beef, mutton or pork 22 in the two ends of hoof lower end return spring 7,9 points of axle sleeve 11 and tune gap swivel nut
Be not connected to the preposition tendons of beef, mutton or pork 21, the bottom of the rearmounted tendons of beef, mutton or pork 22, axle sleeve 11, adjust gap swivel nut 9 respectively with the preposition tendons of beef, mutton or pork 21, the rearmounted tendons of beef, mutton or pork
Open slot is provided between 22 connecting end surfaces, the preposition tendons of beef, mutton or pork 21 are embedded into the open slot of axle sleeve 11, and the rearmounted tendons of beef, mutton or pork 22 are embedded into tune
In the open slot of gap swivel nut 9.
As shown in figure 5, adjusting gap ratchet 10 to include positioned at the middle gear with moving tooth 27 and be coaxially fixed in gear
The major axis and short axle at two ends, adjust gap swivel nut 9 to be socketed in by screw thread on the major axis of tune gap ratchet 10, adjust between gap swivel nut 9 and major axis
Threaded connection is formed, axle sleeve 11 is socketed in the short axle of tune gap ratchet 10, is formed and be hinged between axle sleeve 11 and short axle, the end of axle sleeve 11
Face and the end contact for adjusting the gear of gap ratchet 10, gear are connected with the moving tooth end of the tune gap plate 12, adjust gap plate 12 to act on
Under stir moving tooth 27 and with moving gear rotation so that adjust gap ratchet 10 and adjust gap swivel nut 9 in axial direction to produce motion.Gap is adjusted to dial
The moving tooth end of plate 12 is stirred downwards when adjusting the moving tooth 27 on gap ratchet assembly 8 to rotate, adjust gap swivel nut 8 and adjust gap ratchet 10 major axis it
Between by screw thread produce axial separation motion.
As shown in Fig. 2 the structure of the utility model brake is to be linked and packed in the following order：Wheel cylinder assembly 14
Take-off lever is connected at the fluting of the preposition inside edge of hoof assembly 16, and preposition hoof assembly 16 and the rearmounted upper end of hoof assembly 1 are all connected with
Hoof supporting pin 17 on to back-plate assembly 5, adjusts the axle sleeve 11 of gap ratchet assembly 8 and adjusts gap swivel nut 9 to be attached separately to brake-shoe
In the neck of muscle 21,22, preposition hoof assembly 16 and rearmounted hoof assembly 1 are by by stage clip pull bar 18, press spring base 19 and stage clip 20
The both sides of the end face of floor pan assembly 5 are fixed on Deng component, bracing wire guide holder 13 is hingedly mounted on preposition hoof assembly 16 by sleeve pin
The middle part of the preposition tendons of beef, mutton or pork 21 pin-and-hole on, it is approximate L shaped plate to adjust gap plate 12, and the middle part of L shaped plate is linked up with preposition by gib head
The bottom of the tendons of beef, mutton or pork 21, adjusts the draw ring end fixed cover of gap bracing wire assembly 15 in hoof supporting pin 17, drag hook end is connected to tune gap plate 12
The upper through hole at hanging hole end, brake-shoe baffle plate 2 is arranged in hoof supporting pin 17, and one end of rearmounted upper return spring 3 is connected to rearmounted
On the tendons of beef, mutton or pork 22, other end clasp joint to hoof supporting pin 17, the preposition upper one end end of return spring 25 axially passes through sleeve pin-shaped
Into clasp joint, other end clasp joint to hoof supporting pin 17 adjusts one end clasp joint of gap plate return spring 6 under tune gap plate 12 hanging hole end
Through hole, the other end is connected to the bottom of the rearmounted tendons of beef, mutton or pork 22；When not applying braking, the braking tendons of beef, mutton or pork 21,22 upper ends and hoof supporting pin
17 contacts, wheelcylinder piston 26 is contacted with the neck of the inside edge of the tendons of beef, mutton or pork 21, adjusts the draw ring end of gap bracing wire assembly 15 to be pressed on hoof branch
On the step for supportting pin 17, bracing wire guide holder 13 is pressed on the braking tendons of beef, mutton or pork 21, adjusts the bracing wire of gap bracing wire assembly 15 to be led tightly around in bracing wire
Into the guide groove of plate 13, adjust the axle sleeve 11 of gap ratchet assembly 8 and adjust gap swivel nut 9 under the spring-force driven dual of lower return spring 7
Compressed with the braking tendons of beef, mutton or pork 21,22, adjust the moving tooth side pressure of gap plate 12 on the moving tooth for adjusting gap ratchet 10.
Its operation principle of the utility model and process are as follows：
The utility model simplify after self-adjusting mechanism principle such as Fig. 8, supporting pin 17 be fulcrum O, wheel cylinder assembly 14 and
Piston mandril 26 collectively forms piston component a, adjusts gap bracing wire assembly 15 and bracing wire guide holder 13 to collectively form part b, adjusts gap plate
12 be part c, and it is that part d, E point are connecing for tune gap ratchet 10 of the tune gap plate 12 with adjusting gap ratchet assembly 8 to adjust gap plate return spring 6
Contact.
Initially install that state such as Fig. 8 is shown in solid (during brakeless), part b is fixed on fixed pivot O, and in piston component
A is contacted in A points, and part c is fixed in systems, and point articulated in B with part b, and part d is fixed in systems, and point articulated in C in part c.
When Braking system, part a does direction as shown and moved outward pushing piece b, and part b rotates drivening piece c around D points around O points
Rotation, E points follow part c to screw out, and part d is stretched, and state is as shown in Fig. 8 dotted lines.
When system decompression (release braking), part d is in the presence of spring force, drivening piece c returns, point E again with tune
Gap ratchet 10 is contacted, and because the clockwise rotation of E points promotes the outside rotating ratchet of moving tooth of ratchet, so as to increase braking
The external diameter of hoof, reaches the effect in regulation gap.
Specifically in force, if after the forward and backward friction disc wear for putting hoof assembly 16,1, brake drum 4 and front and rear friction plate
23rd, the gap X increases existed between 24, in gap X increases to a certain extent when, the self-regulated in gap is realized in the following ways.
When vehicle is braked, the piston mandril 26 of wheel cylinder assembly 14 is displaced outwardly, and promotes preposition hoof assembly 16 outside
Mobile, forward and backward brake shoe assembly 16,1 opens.Because forward and backward brake shoe assembly 16,1 opens, the gib head end of gap bracing wire assembly 15 is adjusted
Tensed by bracing wire part and produce motion, adjust system of the gap plate 12 in the case where adjusting the pulling force of the gib head of gap bracing wire assembly 15 around fixed gib head
The dynamic mounting hole of the tendons of beef, mutton or pork 21 rotation, moving tooth end can leave the gear for adjusting gap ratchet 10, upper return spring 3,25 and tune gap plate return
Spring 6 is stretched.
When vehicle, which is released, to be braked, wheelcylinder piston 26, preposition brake shoe assembly 16, rearmounted brake shoe assembly 1, tune gap plate
12 all in the presence of return spring return, now, adjust gap plate 12 to touch tune gap ratchet 10 again, and with adjusting gap to dial
The returning movement of plate 12 can promote gear to rotate 1 tooth, adjust gap swivel nut 9 and adjust the screwed apart of gap ratchet 10 to axially move, from
And open preposition hoof assembly 16 and rearmounted hoof assembly 1, the abrasion of brake strip 23,24 is compensated, so as to ensure the He of brake drum 4
Brake strip 23,24 keeps specific gap, reaches the effect for automatically adjusting gap.
As can be seen here, the utility model can independently carry out the adjustment of drum-shoe clearance, and hoof drum can be accurately adjusted in real time
Gap, without manually adjusting, eliminates the inconvenience and inaccuracy of manual adjustment.
It, to explanation of the present utility model, is limited of the present utility model that examples detailed above, which is, any to the utility model
Simple variant belong to protection domain of the present utility model.
Claims (6)
1. a kind of self-boosting type drum brake with clearance self-regulating mechanism device, including back-plate assembly (5), brake drum
(4), preposition hoof assembly (16), rearmounted hoof assembly (1), brake-shoe baffle plate (2) and wheel cylinder assembly (14), are characterised by：
Also include clearance self-regulating mechanism device, back-plate assembly (5) is arranged on vehicle frame, the fixed peace of wheel cylinder assembly (14)
Mounted in the middle part of back-plate assembly (5) end face, preposition hoof assembly (16) and rearmounted hoof assembly (1) pass through identical pressure spring machine
Structure is arranged on the both sides of back-plate assembly (5) end face, and clearance self-regulating mechanism device is arranged on preposition hoof assembly (16) and rearmounted
It is connected on hoof assembly (1) and with the hoof supporting pin (17) on back-plate assembly (5), preposition hoof assembly (16) and rearmounted hoof assembly
(1) upper end is all connected to the hoof supporting pin (17) on back-plate assembly (5), preposition hoof assembly (16) and rearmounted hoof assembly (1)
Connect whole to carry out clearance self-regulating by clearance self-regulating mechanism device between lower end.
2. a kind of self-boosting type drum brake with clearance self-regulating mechanism device according to claim 1, its feature
It is：Described preposition hoof assembly (16) includes the preposition tendons of beef, mutton or pork (21), preposition Brake shoe lining (23), preposition upper return spring
(25) the preposition shoe plate of support connection function and between the preposition tendons of beef, mutton or pork (21) and preposition Brake shoe lining (23) is played,
One end of preposition upper return spring (25) is connected on the preposition tendons of beef, mutton or pork (21), other end clasp joint to hoof supporting pin (17)；
Described rearmounted hoof assembly (1) includes the rearmounted tendons of beef, mutton or pork (22), rearmounted Brake shoe lining (24), rearmounted upper return spring
(3) the rearmounted shoe plate of support connection function and between the rearmounted tendons of beef, mutton or pork (22) and rearmounted Brake shoe lining (24) is played,
One end of rearmounted upper return spring (3) is connected on the rearmounted tendons of beef, mutton or pork (22), other end clasp joint to hoof supporting pin (17)；
Described wheel cylinder assembly (14) includes wheel cylinder and piston mandril (26), and wheel cylinder is bolted on system
On dynamic floor pan assembly (5) end face, the preposition tendons of beef, mutton or pork (21) of piston mandril (26) apical grafting of wheel cylinder in preposition hoof assembly (16)
At the fluting of inside edge；
The middle part of the preposition tendons of beef, mutton or pork (21) and the rearmounted tendons of beef, mutton or pork (22) is connected to back-plate assembly (5) by stage clip mechanism, preposition
The upper end of the tendons of beef, mutton or pork (21) and the rearmounted tendons of beef, mutton or pork (22) is abutted against on the multi-diameter shaft of hoof supporting pin (17), preposition tendons of beef, mutton or pork (21) and rearmounted
Connected between the lower end of the tendons of beef, mutton or pork (22) by the tune gap ratchet assembly (8) in clearance self-regulating mechanism device.
3. a kind of self-boosting type drum brake with clearance self-regulating mechanism device according to claim 2, its feature
It is：Described stage clip mechanism includes stage clip pull bar (18), press spring base (19) and stage clip (20), the connection of stage clip pull bar (18) one end
In back-plate assembly (5), the other end is connected through the preposition tendons of beef, mutton or pork (21) or the rearmounted tendons of beef, mutton or pork (22) and press spring base (19), stage clip
Suit stage clip (20) on stage clip pull bar (18) between seat (19) and the preposition tendons of beef, mutton or pork (21) or the rearmounted tendons of beef, mutton or pork (22).
4. a kind of self-boosting type drum brake with clearance self-regulating mechanism device according to claim 1, its feature
It is：Described clearance self-regulating mechanism device includes adjusting gap ratchet assembly (8), adjusts gap bracing wire assembly (15), bracing wire guide holder
(13), adjust gap plate (12) and adjust gap plate return spring (6), bracing wire guide holder (13) is hingedly mounted on preposition by sleeve pin
In the middle part of the preposition tendons of beef, mutton or pork (21) of hoof assembly (16), preposition upper return spring (25) one end end passes axially through sleeve pin formation hook
Connect, it is approximate L shaped plate to adjust gap plate (12), the middle part of L shaped plate is linked up with the bottom of the preposition tendons of beef, mutton or pork (21) by gib head so that adjusted
Formed and be hinged between gap plate (12) and the preposition tendons of beef, mutton or pork (21), one end of L shaped plate is as adjusting gap ratchet assembly (8) to be connected
Moving tooth end, the other end of L shaped plate is located above moving tooth end as hanging hole end, hanging hole end；
Gap bracing wire assembly (15) is adjusted to include being located at draw ring end, drag hook end and the bracing wire at two ends respectively, draw ring end fixed cover is in hoof
In supporting pin (17), drag hook end is connected to the upper through hole for adjusting gap plate (12) hanging hole end, and bracing wire bypasses bracing wire guide holder (13) outside
The guide groove of side is connected between draw ring end and drag hook end so that draw ring end and drag hook end are synchronized with the movement along bracing wire；Gap is adjusted to dial
Plate return spring (6) one end clasp joint is to the lower through-hole for adjusting gap plate (12) hanging hole end, and the other end is connected to the rearmounted tendons of beef, mutton or pork (22)
Bottom.
5. a kind of self-boosting type drum brake with clearance self-regulating mechanism device according to claim 4, its feature
It is：Described tune gap ratchet assembly (8) includes hoof lower end return spring (7), adjusts gap swivel nut (9), adjusts gap ratchet (10) and axle
Cover (11), hoof lower end return spring (7) two ends distinguish clasp joint on the preposition tendons of beef, mutton or pork (21) and the rearmounted tendons of beef, mutton or pork (22), axle sleeve (11) and
Adjust gap swivel nut (9) to be connected respectively to the preposition tendons of beef, mutton or pork (21), the bottom of the rearmounted tendons of beef, mutton or pork (22), adjust gap ratchet (10) to include being located at centre
Gear with moving tooth (27) and the coaxial major axis and short axle for being fixed in gear two ends, adjust gap swivel nut (9) to pass through thread bush
It is connected on tune gap ratchet (10) major axis, axle sleeve (11) is socketed in tune gap ratchet (10) short axle, gear and the tune gap plate
(12) moving tooth end connection, adjusts and stirs moving tooth (27) under gap plate (12) effect and rotated with moving gear so that adjust gap ratchet
(10) in axial direction produce and move with tune gap swivel nut (9).
6. a kind of self-boosting type drum brake with clearance self-regulating mechanism device according to claim 5, its feature
It is：Described axle sleeve (11), gap swivel nut (9) is adjusted to be set respectively between the preposition tendons of beef, mutton or pork (21), the rearmounted tendons of beef, mutton or pork (22) connecting end surface
There is open slot, the preposition tendons of beef, mutton or pork (21) are embedded into the open slot of axle sleeve (11), the rearmounted tendons of beef, mutton or pork (22), which are embedded into, adjusts gap swivel nut (9)
In open slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357786.3U CN206617474U (en) | 2016-12-12 | 2016-12-12 | A kind of self-boosting type drum brake with clearance self-regulating mechanism device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621357786.3U CN206617474U (en) | 2016-12-12 | 2016-12-12 | A kind of self-boosting type drum brake with clearance self-regulating mechanism device |
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| Publication Number | Publication Date |
|---|---|
| CN206617474U true CN206617474U (en) | 2017-11-07 |
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ID=60229454
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| CN201621357786.3U Active CN206617474U (en) | 2016-12-12 | 2016-12-12 | A kind of self-boosting type drum brake with clearance self-regulating mechanism device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523549A (en) * | 2016-12-12 | 2017-03-22 | 浙江亚太机电股份有限公司 | Self-boost drum brake with gap self-adjustment mechanism device |
| CN109210114A (en) * | 2018-09-30 | 2019-01-15 | 山东金麒麟股份有限公司 | Drum brakes liner and shoes pre-bonding positioning device |
-
2016
- 2016-12-12 CN CN201621357786.3U patent/CN206617474U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523549A (en) * | 2016-12-12 | 2017-03-22 | 浙江亚太机电股份有限公司 | Self-boost drum brake with gap self-adjustment mechanism device |
| CN106523549B (en) * | 2016-12-12 | 2019-07-02 | 浙江亚太机电股份有限公司 | Self-boosting type drum brake with clearance self-regulating mechanism device |
| CN109210114A (en) * | 2018-09-30 | 2019-01-15 | 山东金麒麟股份有限公司 | Drum brakes liner and shoes pre-bonding positioning device |
| CN109210114B (en) * | 2018-09-30 | 2024-03-01 | 山东金麒麟股份有限公司 | Pre-sticking positioning device for drum brake pad |
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