CN107867270A - The overspeed braking device of trailer - Google Patents
The overspeed braking device of trailer Download PDFInfo
- Publication number
- CN107867270A CN107867270A CN201711086650.2A CN201711086650A CN107867270A CN 107867270 A CN107867270 A CN 107867270A CN 201711086650 A CN201711086650 A CN 201711086650A CN 107867270 A CN107867270 A CN 107867270A
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- China
- Prior art keywords
- trailer
- point
- snap ring
- brake
- half snap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/20—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger specially for trailers, e.g. in case of uncoupling of or overrunning by trailer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
- B60T13/168—Arrangements for pressure supply
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
A kind of overspeed braking device of trailer, including trailer booster pump, centrifugal control mechanism, trailer gas bag, the first check valve, the second check valve, servomotor driven change valve, brake, the first tracheae and the second tracheae；Centrifugal control mechanism includes first point of half snap ring, second point of half snap ring, sealing ring, spring, centrifugal-block and annular seal groove；First point of half snap ring is provided with the chute of radial direction, and in the chute for first point of half snap ring that centrifugal-block is slidably connected at, one end of spring is fixedly connected on first point of half snap ring, and the other end of spring is connected on centrifugal-block；The roller of servomotor driven change valve is in contact or is separated with centrifugal-block；The gas outlet of first check valve connects with trailer gas bag；The gas outlet of second check valve connects with the air inlet of trailer booster pump；The air inlet P mouths of servomotor driven change valve connect with gas bag, and the execution mouth A mouths of servomotor driven change valve connect with trailer booster pump, and trailer booster pump connects with the inner chamber of brake.The structure of the present invention is simple, safe.
Description
Technical field
The present invention relates to a kind of overspeed braking device of trailer.
Background technology
Trailer could work after need to being typically connected with tractor, as shown in Fig. 2 the vehicle bridge of the trailer of prior art includes wheel
Hub 120 and wheel shaft 121, wheel hub 120 are rotatably connected on wheel shaft 121, and the wheel of trailer is fixedly connected with wheel hub 120, i.e. wheel hub
120 can rotate with the wheel of car trailer, and wheel shaft 121 will not be with the vehicle wheel rotation of trailer.As shown in figure 1, prior art
Trailer braking device include trailer booster pump 100 and trailer brakes 101, the brake apparatus of tractor include air compressor machine 110,
Foot brake valves 111, propons booster pump 112, rear axle boost pump 113, propons brake 114, rear axle brake vi 115 and tractor gas
Bag 116.The air inlet of trailer booster pump 100 is connected by tracheae with the second execution mouth A2 mouths of foot brake valves 111, trailer reinforcing
The liquid outlet of pump 100 connects with trailer brakes 101.The gas outlet of the air compressor machine 110 of tractor respectively with tractor gas bag
116th, the first air inlet P1 mouths of foot brake valves 111 connect with the second air inlet P2 mouths of foot brake valves 111, foot brake valves 111
The first execution mouth A1 mouths connected with the air inlet of propons booster pump 112, the liquid outlet of propons booster pump 112 and propons brake
114 connections.The second of foot brake valves 111 performs the mouth A2 mouths air inlet and trailer booster pump 100 with rear axle boost pump 113 respectively
Air inlet connection, the liquid outlet of rear axle boost pump 113 connects with rear axle brake vi 115.When driver steps on the pin of tractor
During brake valve 111, the pressed gas in gas bag 116 can arrive propons brake 114, rear axle brake vi respectively through foot brake valves 111
115 and trailer brakes 101, so that tractor and trailer are respectively provided with braking.Because above-mentioned Trailer braking device is under trailer
Slope when driving over the speed limit can not Braking mode, therefore security is not high；Gone due also to above-mentioned Trailer braking device goes up a slope in trailer
When surprisingly being broken off relations with tractor when sailing can not Braking mode, therefore security is not high.
The content of the invention
It is an object of the invention to provide a kind of overspeed braking device of trailer simple in construction, safe.
To achieve these goals, the technical scheme is that：A kind of overspeed braking device of trailer, including trailer
Booster pump, in addition to centrifugal control mechanism, trailer gas bag, the first check valve, the second check valve, servomotor driven change valve, brake,
One tracheae and the second tracheae；The centrifugal control mechanism include first point of half snap ring, second point of half snap ring, sealing ring, spring, from
Heart block and annular seal groove；First point of half snap ring and second point of half snap ring are in semi-circular shape, first point of half snap ring and
Two and half snap ring circumference blind-mates form an annulus and the end of the annulus formed is provided with annular seal groove, first point of half card
Ring is provided with the chute of radial direction, in the chute for first point of half snap ring that the centrifugal-block is slidably connected at, one end of the spring
It is fixedly connected on the one end in the center of circle of close first point of half snap ring of the chute of the radial direction of first point of half snap ring, the other end of spring
Radially outwardly it is connected on centrifugal-block；The servomotor driven change valve be fixedly connected on the brake and the roller of servomotor driven change valve with
Centrifugal-block is in contact or is separated；The sealing ring is arranged in annular seal groove and sealing ring and brake formation end face are close
Envelope；The air inlet of first check valve connects with the first tracheae, and the gas outlet of the first check valve connects with trailer gas bag；It is described
The air inlet of second check valve connects with the second tracheae, and the gas outlet of the second check valve connects with the air inlet of trailer booster pump；
The air inlet P mouths of the servomotor driven change valve connect with gas bag, the air inlet for performing mouth A mouths and trailer booster pump of servomotor driven change valve
Connection, the liquid outlet of trailer booster pump connect with the inner chamber of brake.
The brake includes housing, end cap, still, moving plate, piston and back-moving spring；The end cap is fixedly connected on shell
There is oil inlet, the liquid outlet of trailer booster pump is connected by the inner chamber of oil inlet and the housing of brake on one end of body and end cap
It is logical；The still is fixedly connected on housing and still arrangement alternate with moving plate, and still and moving plate are respectively positioned in the inner chamber of housing；
The piston is slidably connected in the inner chamber of housing；The back-moving spring is arranged in the inner chamber of housing and back-moving spring is set in
On piston, one end of back-moving spring is resisted against on housing, and the other end is resisted against on piston.
The section of the piston is in zigzag；The housing includes left shell and right shell body, and the section of the right shell body is in L
Shape.
Benefit of the invention is that：（1）, due to the present invention first point of half snap ring and second point of half snap ring circumference gapless match somebody with somebody
The end for closing one annulus of formation and the annulus formed is provided with annular seal groove, and first point of half snap ring is provided with the chute of radial direction, institute
In the chute for stating first point of half snap ring that centrifugal-block is slidably connected at, one end of the spring is fixedly connected on first point of half snap ring
The chute of radial direction close to the one end in the center of circle of first point of half snap ring, the other end of spring be radially outwardly connected to centrifugal-block
On；The servomotor driven change valve is fixedly connected on the brake and the roller of servomotor driven change valve is in contact or is separated with centrifugal-block；
The air inlet of first check valve connects with the first tracheae, and the gas outlet of the first check valve connects with trailer gas bag；Described
The air inlet of two check valves connects with the second tracheae, and the gas outlet of the second check valve connects with the air inlet of trailer booster pump；Institute
The air inlet P mouths for stating servomotor driven change valve connect with gas bag, and the air inlet for performing mouth A mouths and trailer booster pump of servomotor driven change valve connects
Logical, the liquid outlet of trailer booster pump connects with the inner chamber of brake；Due also in the use of the present invention, by the first tracheae 7 with leading
Draw the gas outlet connection of the air compressor machine 110 on car, the second tracheae 8 and second of the foot brake valves 111 on tractor are performed into mouth
A2 mouths are connected, and first point of half snap ring 11 and second point of half snap ring 12 are bolted to connection on the wheel hub 120 of trailer, will
The housing 61 of brake 6 is fixedly connected on the wheel shaft 121 of trailer, and the moving plate 64 of brake 6 is fixedly connected on into the wheel of trailer
On hub 120.Thus when tractor drives trailer being driven over the speed limit on descending road, the rotary speed of the wheel hub of trailer will add
It hurry up, the rotary speed of first point of half snap ring can also be accelerated.Centrifugal-block can overcome the spring force footpath of spring under the influence of centrifugal force
To being displaced outwardly, centrifugal-block first contacts then pushing rolling wheels with the roller of servomotor driven change valve moves valve element, and servomotor driven change valve changes
To at this moment the air inlet P mouths of servomotor driven change valve connect with performing mouth A mouths.Pressed gas so in trailer gas bag enters trailer
Booster pump, the pressure oil of the liquid outlet of trailer booster pump enter brake, make brake, i.e. the present invention can make trailer under
Slope can be safe with Braking mode when driving over the speed limit.When surprisingly being broken off relations with tractor when trailer is in up-hill journey, the first gas
Pipe and the second tracheae can be pulled off, and trailer can glide under gravity and trailer gliding speed can be increasingly faster, i.e.,
The rotating speed of the wheel hub of trailer can be increasingly faster, and the rotating speed for being fixedly connected on first point of half snap ring on the wheel hub of trailer also can be increasingly
It hurry up, the centrifugal-block in the chute for the radial direction for being so slidably connected at first point of half snap ring can overcome spring under the influence of centrifugal force
Spring force be moved radially outward, centrifugal-block first contacted with the roller of servomotor driven change valve then pushing rolling wheels move valve element, machine
Dynamic reversal valve commutates, and at this moment the air inlet P mouths of servomotor driven change valve connect with performing mouth A mouths.Pressure gas so in trailer gas bag
Body enters trailer booster pump, and the pressure oil of the liquid outlet of trailer booster pump enters brake, makes brake, i.e., energy of the present invention
Braking mode when enabling the trailer surprisingly be broken off relations in up-hill journey, it is safe.（2）, due to the present invention first point of half snap ring
The end that an annulus and the annulus formed are formed with second point of half snap ring circumference blind-mate is provided with annular seal groove, first point
Half snap ring is provided with the chute of radial direction, in the chute for first point of half snap ring that the centrifugal-block is slidably connected at, the sealing ring
It is arranged in annular seal groove and sealing ring forms end face seal with brake, thus first point of half snap ring can not only be used for putting
Centrifugal-block can be placed by putting, and can be used for placing sealing ring for sealing, and its structure is very simple.
Below in conjunction with accompanying drawing and the embodiment provided, the present invention is further illustrated.
Brief description of the drawings
Fig. 1 be prior art Trailer braking device and tractor brake apparatus catenation principle figure；
Fig. 2 is the axletree of the trailer of prior art and the connection diagram of wheel hub；
Fig. 3 is the control principle drawing of the present invention；
Fig. 4 is the schematic diagram of the centrifugal control mechanism of the present invention；
Fig. 5 is Fig. 4 A-A schematic cross-sectional views；
Fig. 6 is the centrifugal control mechanism of the present invention, servomotor driven change valve（5）And brake（6）It is connected to the axletree and wheel hub of trailer
On schematic diagram；
Fig. 7 is the control principle drawing that the present invention is connected with the brake apparatus of tractor；
Fig. 8 is the connection diagram of first point of half snap ring of centrifugal control mechanism, spring, centrifugal-block and servomotor driven change valve；
Fig. 9 be Fig. 8 centrifugal-block and servomotor driven change valve roller be separated when B-B section views enlarged diagram；
Figure 10 is the enlarged diagram of B-B section views when Fig. 8 centrifugal-block is in contact with the roller of servomotor driven change valve.
Reference in above-mentioned accompanying drawing is as follows：Centrifugal control mechanism 1, trailer gas bag 2, the first check valve 3, second is unidirectional
Valve 4, servomotor driven change valve 5, brake 6, the first tracheae 7 and the second tracheae 8, first point of half snap ring 11, chute 11-1, second point half
Snap ring 12, sealing ring 13, spring 14, centrifugal-block 15, annular seal groove 16, housing 61, left shell 61-1, right shell body 61-2, end
Lid 62, oil inlet 62-1, still 63, moving plate 64, piston 65, back-moving spring 66, trailer booster pump 100, trailer brakes 101,
Air compressor machine 110, foot brake valves 111, propons booster pump 112, rear axle boost pump 113, propons brake 114, rear axle brake vi
115, tractor gas bag 116, wheel hub 120, wheel shaft 121.
Embodiment
As shown in Figures 3 to 6, a kind of overspeed braking device of trailer, including trailer booster pump 100, trailer booster pump
100 be to produce " XM60 " type booster pump by Shengli Brake Co., Ltd., Wuhu.Also include centrifugal control mechanism 1, trailer
Gas bag 2, the first check valve 3, the second check valve 4, servomotor driven change valve 5, brake 6, the first tracheae 7 and the second tracheae 8；It is motor-driven to change
Valve element is moved to valve 5 by the roller 5-1 of external force pressure spool end, so that servomotor driven change valve 5 commutates, it is not necessary to artificial behaviour
Make can commutation, the model of servomotor driven change valve 5 can be 23C-25B or 23C-25BH.The centrifugal control mechanism 1 includes the
One and half 11, second point half of snap ring snap rings 12, sealing ring 13, spring 14, centrifugal-block 15 and annular seal groove 16；Described first point
Half snap ring 11 and second point of half snap ring 12 are in semi-circular shape, first point of half snap ring 11 and second point of half 12 circumferential gapless of snap ring
The end for cooperatively forming an annulus and the annulus formed is provided with annular seal groove 16, and first point of half snap ring 11 is provided with the cunning of radial direction
In groove 11-1, the chute 11-1 for first point of half snap ring 11 that the centrifugal-block 15 is slidably connected at, one end of the spring 14 is consolidated
Surely the one end in the center of circle of the chute 11-1 of the radial direction of first point of half snap ring 11 close first point of half snap ring 11, spring 14 are connected to
The other end be radially outwardly connected on centrifugal-block 15；As shown in fig. 6, the servomotor driven change valve 5 is fixedly connected on brake 6
Upper and servomotor driven change valve 5 roller 5-1 is in contact or is separated with centrifugal-block 15；As shown in Fig. 8 to Figure 10, when centrifugal-block 15
When centrifugal force can overcome the active force of spring 14, centrifugal-block 15 can along after the radially outward sliding of first point of half snap ring 11 with machine
The roller 5-1 of dynamic reversal valve 5 is in contact and pushing rolling wheels 5-1 moves valve element, so that servomotor driven change valve 5 commutates, this opportunity
The air inlet P mouths of dynamic reversal valve 5 connect with performing mouth A mouths.When the centrifugal force of centrifugal-block 15 can not overcome the active force of spring 14
When, centrifugal-block 15 connects with the roller 5-1 of servomotor driven change valve 5 under action from the spring 14 separates, and at this moment servomotor driven change valve 5 enters
Gas port P mouths do not connect with performing mouth A mouths.As shown in fig. 6, the sealing ring 13 is arranged in annular seal groove 16 and sealing ring 13
End face seal is formed with brake 6；As shown in Figure 3 and Figure 7, the air inlet of first check valve 3 connects with the first tracheae 7,
In the use of the present invention, the first tracheae 7 is connected with the gas outlet of the air compressor machine 110 on tractor, the outlet of the first check valve 3
Mouth connects with trailer gas bag 2；When trailer is breaking off relations on descending road with tractor, tracheae i.e. that trailer is connected with tractor
One tracheae 7 can be pulled off, set the first check valve 3 after after the first tracheae 7 that trailer is connected with tractor is pulled off trailer gas
Pressed gas in bag 2 will not be flowed in air from the first tracheae 7 broken.The air inlet and second of second check valve 4
Tracheae 8 connects, and connects in the use of the present invention, second tracheae 8 is performed into mouth A2 mouths with second of the foot brake valves 111 on tractor
Logical, the gas outlet of the second check valve 4 connects with the air inlet of trailer booster pump 100；The air inlet P mouths of the servomotor driven change valve 5
Connected with gas bag 2, the execution mouth A mouths of servomotor driven change valve 5 connect with the air inlet of trailer booster pump 100, trailer booster pump 100
Liquid outlet connects with the inner chamber of brake 6.Set after the second check valve 4 when the second tracheae 8 that trailer is connected with tractor is drawn
The second tracheae 8 that the pressed gas in trailer gas bag 2 will not be after servomotor driven change valve 5 after breaking of having no progeny is flowed in air.
As shown in fig. 6, the brake 6 includes housing 61, end cap 62, still 63, moving plate 64, piston 65 and back-moving spring
66；The end cap 62, which is fixedly connected on one end of housing 61 and end cap 62, has oil inlet 62-1, and trailer booster pump 100 goes out
Liquid mouth is connected by oil inlet 62-1 with the inner chamber of the housing 61 of brake 6；The still 63 be fixedly connected on housing 61 and
Still 63 is respectively positioned in the inner chamber of housing 61 with 64 alternate arrangement of moving plate, still 63 and moving plate 64；The piston 65 is slidably connected
In the inner chamber of housing 61；The back-moving spring 66 is arranged in the inner chamber of housing 61 and back-moving spring 66 is set in piston 65
On, one end of back-moving spring 66 is resisted against on housing 61, and the other end is resisted against on piston 65.Go out liquid when trailer booster pump 100
When the pressure oil of mouth enters the inner chamber of the housing 61 of brake 6 by oil inlet 62-1, pressure oil promotes piston 65 to be moved to the left,
Piston 65 compresses moving plate 64, combines sound piece 63 and moving plate 64, trailer braking protection valve；When the liquid outlet of trailer booster pump 100 does not have
Pressure oil by oil inlet 62-1 enter brake 6 housing 61 inner chamber when, piston 65 under the promotion of back-moving spring 66 to
Move right, separate sound piece 63 and moving plate 64, trailer releases braking.
The section of the piston 65 is in zigzag；The housing 61 includes left shell 61-1 and right shell body 61-2, the right shell
Body 61-2 section is L-shaped.So setting can not only make the contact area of piston 65 and moving plate 64 bigger, in the pressure of pressure oil
Make brake force bigger in the case of identical, brake design can be obtained in the case of same brake force smaller；And it can make
Back-moving spring 66 is arranged to more compact, obtains brake design smaller.
As shown in Figure 6 and Figure 7, in the use of the present invention, outlet by the first tracheae 7 and the air compressor machine 110 on tractor
Mouth connection, the second tracheae 8 is connected with the second execution mouth A2 mouths of the foot brake valves 111 on tractor, by first point of half snap ring
11 and second point of half snap ring 12 be bolted to connection on the wheel hub 120 of trailer, such first point of half snap ring 11 and second
Half snap ring 12 is divided to be rotated together with the wheel hub 120 of trailer.The housing 61 of brake 6 is fixedly connected on to the wheel shaft 121 of trailer
On, because the wheel shaft 121 of trailer does not rotate when trailer is run, therefore the shell for the brake 6 being fixedly connected on wheel shaft 121
Body 61 will not also rotate；The moving plate 64 of brake 6 is fixedly connected on the wheel hub 120 of trailer, moving plate when such trailer is run
64 can rotate together with the wheel hub 120 of trailer.
The operation principle of the present invention is as follows：It is motor-driven when tractor drives trailer not driven over the speed limit on descending road
For the air inlet P mouths of reversal valve 5 with performing mouth A mouths and being not communicated with, the pressed gas in trailer gas bag 2 will not enter trailer booster pump
100.When needing braking, the foot brake valves 111 stepped on by driver on tractor make the pressed gas in tractor gas bag 116
Through foot brake valves 111 again through the second check valve 4) enter trailer booster pump 100, the pressure oil of the liquid outlet of trailer booster pump 100
Into brake 6, brake brake 6.When tractor drives trailer being driven over the speed limit on descending road, the wheel hub of trailer
120 rotary speed will be accelerated, because first point of half snap ring 11 is bolted to connection on the wheel hub 120 of trailer, because
The rotary speed of this first point of half snap ring 11 can also be accelerated.So it is slidably connected at the chute of the radial direction of first point of half snap ring 11
Centrifugal-block 15 in 11-1 can overcome the spring force of spring 14 to be moved radially outward under the influence of centrifugal force, centrifugal-block 15 from
First contacted then with the roller 5-1 of servomotor driven change valve 5 afterwards along first point of half being moved radially outward for snap ring 11 in the presence of mental and physical efforts
Pushing rolling wheels 5-1 moves valve element, and servomotor driven change valve 5 commutates, and at this moment the air inlet P mouths of servomotor driven change valve 5 connect with performing mouth A mouths
It is logical.Pressed gas so in trailer gas bag 2 enters trailer booster pump 100, and the pressure oil of the liquid outlet of trailer booster pump 100 enters
Enter brake 6, brake brake 6, i.e., the present invention can make trailer can be with Braking mode when descending is driven over the speed limit, therefore safety
Property it is high.
When surprisingly being broken off relations with tractor when trailer is in up-hill journey, the first tracheae 7 and the second tracheae 8 can be pulled off,
Simultaneously because trailer travels on the ramp of upward slope, therefore trailer can glide and trailer gliding speed meeting under gravity
Increasingly faster, i.e., the rotating speed of the wheel hub 120 of trailer can be increasingly faster, is fixedly connected on first point of half card on the wheel hub 120 of trailer
The rotating speed of ring 11 also can be increasingly faster, the centrifugal-block in the chute 11-1 for the radial direction for being so slidably connected at first point of half snap ring 11
15 can overcome the spring force of spring 14 to be moved radially outward under the influence of centrifugal force, the edge under the influence of centrifugal force of centrifugal-block 15
The rear then pushing rolling wheels 5-1 that first contacted with the roller 5-1 of servomotor driven change valve 5 that is moved radially outward of first point of half snap ring 11 makes valve
Core moves, and servomotor driven change valve 5 commutates, and at this moment the air inlet P mouths of servomotor driven change valve 5 connect with performing mouth A mouths.So trailer gas bag
Pressed gas in 2 enters trailer booster pump 100, and the pressure oil of the liquid outlet of trailer booster pump 100 enters brake 6, makes system
Dynamic device 6 is braked, i.e., the Braking mode when present invention can enable the trailer surprisingly be broken off relations with tractor in up-hill journey, therefore security
It is high.
As shown in fig. 6, the braking principle of the brake 6 of the present invention is as follows：When the pressure of the liquid outlet of trailer booster pump 100
When oil enters the inner chamber of the housing 61 of brake 6 by oil inlet 62-1, pressure oil promotes piston 65 to be moved to the left, and piston 65 is pressed
Tight moving plate 64, combines still 63 and moving plate 64, because the wheel shaft 121 of trailer when trailer is run does not rotate, is fixedly connected on
The housing 61 of brake 6 on wheel shaft 121 will not also rotate, therefore the still 63 being fixedly connected on housing 61 will not also revolve
Turn, after still 63 and the combination of moving plate 64, the rotating speed of moving plate 64, which initially drops until, no longer to be rotated, the extension being fixedly connected with moving plate 64
The rotating speed of the wheel hub 120 of car, which also begins to be decreased until, no longer to be rotated, trailer braking protection valve.When the liquid outlet of trailer booster pump 100 does not have
Pressure oil by oil inlet 62-1 enter brake 6 housing 61 inner chamber when, piston 65 under the promotion of back-moving spring 66 to
Move right, separate sound piece 63 and moving plate 64, trailer releases braking.
Claims (3)
1. a kind of overspeed braking device of trailer, including trailer booster pump（100）, it is characterised in that：Also include centrifugation control machine
Structure（1）, trailer gas bag（2）, the first check valve（3）, the second check valve (4), servomotor driven change valve（5）, brake（6）, the first gas
Pipe（7）With the second tracheae（8）；The centrifugal control mechanism（1）Including first point of half snap ring（11）, second point of half snap ring（12）、
Sealing ring（13）, spring（14）, centrifugal-block（15）And annular seal groove（16）；First point of half snap ring（11）With second point half
Snap ring（12）It is in semi-circular shape, first point of half snap ring（11）With second point of half snap ring（12）Circumferential blind-mate forms a circle
The end of ring and the annulus formed is provided with annular seal groove（16）, first point of half snap ring（11）It is provided with the chute of radial direction（11-
1）, the centrifugal-block（15）First point of half snap ring being slidably connected at（11）Chute（11-1）In, the spring（14）One
End is fixedly connected on first point of half snap ring（11）Radial direction chute（11-1）Close to first point of half snap ring（11）The center of circle
One end, spring（14）The other end be radially outwardly connected to centrifugal-block（15）On；The servomotor driven change valve（5）It is fixedly connected on
Brake（6）Upper and servomotor driven change valve（5）Roller（5-1）With centrifugal-block（15）It is in contact or is separated；The sealing ring
（13）It is arranged on annular seal groove（16）In and sealing ring（13）With brake（6）Form end face seal；First check valve
（3）Air inlet and the first tracheae（7）Connection, the first check valve（3）Gas outlet and trailer gas bag（2）Connection；Described second
Check valve（4）Air inlet and the second tracheae（8）Connection, the second check valve（4）Gas outlet and trailer booster pump（100）Enter
Gas port connects；The servomotor driven change valve（5）Air inlet P mouths and gas bag（2）Connection, servomotor driven change valve（5）Execution mouth A mouths with
Trailer booster pump（100）Air inlet connection, trailer booster pump（100）Liquid outlet and brake（6）Inner chamber connection.
2. the overspeed braking device of trailer according to claim 1, it is characterised in that：The brake（6）Including housing
（61）, end cap（62）, still（63）, moving plate（64）, piston（65）And back-moving spring（66）；The end cap（62）It is fixedly connected on
Housing（61）One end and end cap（62）It is upper that there is oil inlet（62-1）, trailer booster pump（100）Liquid outlet pass through oil inlet
（62-1）With brake（6）Housing（61）Inner chamber connection；The still（63）It is fixedly connected on housing（61）Upper and still
（63）With moving plate（64）Alternate arrangement, still（63）And moving plate（64）It is respectively positioned on housing（61）Inner chamber in；The piston（65）
It is slidably connected at housing（61）Inner chamber in；The back-moving spring（66）It is arranged on housing（61）Inner chamber in and back-moving spring
（66）It is set in piston（65）On, back-moving spring（66）One end be resisted against housing（61）On, the other end is resisted against piston（65）
On.
3. the overspeed braking device of trailer according to claim 2, it is characterised in that：The piston（65）Section be in Z
Font；The housing（61）Including left shell（61-1）And right shell body（61-2）, the right shell body（61-2）Section it is L-shaped.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711086650.2A CN107867270B (en) | 2017-11-07 | 2017-11-07 | The overspeed braking device of trailer |
| CN201911003978.2A CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
| CN201911003867.1A CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711086650.2A CN107867270B (en) | 2017-11-07 | 2017-11-07 | The overspeed braking device of trailer |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911003978.2A Division CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
| CN201911003867.1A Division CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107867270A true CN107867270A (en) | 2018-04-03 |
| CN107867270B CN107867270B (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711086650.2A Active CN107867270B (en) | 2017-11-07 | 2017-11-07 | The overspeed braking device of trailer |
| CN201911003867.1A Withdrawn CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
| CN201911003978.2A Withdrawn CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911003867.1A Withdrawn CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
| CN201911003978.2A Withdrawn CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208554A (en) * | 2019-11-29 | 2021-01-12 | 丁雷超 | Overspeed protection device for pneumatic monorail crane |
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| DE2952093A1 (en) * | 1979-12-22 | 1981-07-02 | Sachs Systemtechnik Gmbh, 8720 Schweinfurt | Braking system for trailer of vehicle - has sensor in form of moving coil detecting centrifugal force and initiating braking |
| CN102358281A (en) * | 2011-08-03 | 2012-02-22 | 石家庄中煤装备制造股份有限公司 | Parking braking protection system |
| CN203819219U (en) * | 2014-03-28 | 2014-09-10 | 常州科研试制中心有限公司 | Cage car for underground coal mine |
| CN106562612A (en) * | 2016-11-14 | 2017-04-19 | 深圳市晓控通信科技有限公司 | High-safety baby walker |
| US20170151845A1 (en) * | 2015-12-01 | 2017-06-01 | Hayes Towing Electronics LLC | Apparatus and method for sway control |
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| CN101666362B (en) * | 2008-09-03 | 2013-03-20 | 陈伯恒 | Centrifugal mechanically controlled clutch |
| JP2010120444A (en) * | 2008-11-18 | 2010-06-03 | Showa Aircraft Ind Co Ltd | Warning device for vehicle rollover suppression |
| CN103192812B (en) * | 2013-03-29 | 2014-12-10 | 常州科研试制中心有限公司 | Control device of braking system of trackless rubber-tyre trailer |
| CN104358804B (en) * | 2014-10-29 | 2017-03-01 | 李开卫 | Multi-sheet wet-type disk brake and its operation method |
| CN205730004U (en) * | 2016-04-14 | 2016-11-30 | 贵州大学 | A kind of high-rise circulation escape device |
| CN205730001U (en) * | 2016-04-14 | 2016-11-30 | 贵州大学 | A kind of speed control of high-rise circulation escape device |
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2017
- 2017-11-07 CN CN201711086650.2A patent/CN107867270B/en active Active
- 2017-11-07 CN CN201911003867.1A patent/CN110843743A/en not_active Withdrawn
- 2017-11-07 CN CN201911003978.2A patent/CN110723125A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2952093A1 (en) * | 1979-12-22 | 1981-07-02 | Sachs Systemtechnik Gmbh, 8720 Schweinfurt | Braking system for trailer of vehicle - has sensor in form of moving coil detecting centrifugal force and initiating braking |
| CN102358281A (en) * | 2011-08-03 | 2012-02-22 | 石家庄中煤装备制造股份有限公司 | Parking braking protection system |
| CN203819219U (en) * | 2014-03-28 | 2014-09-10 | 常州科研试制中心有限公司 | Cage car for underground coal mine |
| US20170151845A1 (en) * | 2015-12-01 | 2017-06-01 | Hayes Towing Electronics LLC | Apparatus and method for sway control |
| CN106562612A (en) * | 2016-11-14 | 2017-04-19 | 深圳市晓控通信科技有限公司 | High-safety baby walker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112208554A (en) * | 2019-11-29 | 2021-01-12 | 丁雷超 | Overspeed protection device for pneumatic monorail crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110723125A (en) | 2020-01-24 |
| CN110843743A (en) | 2020-02-28 |
| CN107867270B (en) | 2019-11-19 |
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