CN107867270B - The overspeed braking device of trailer - Google Patents
The overspeed braking device of trailer Download PDFInfo
- Publication number
- CN107867270B CN107867270B CN201711086650.2A CN201711086650A CN107867270B CN 107867270 B CN107867270 B CN 107867270B CN 201711086650 A CN201711086650 A CN 201711086650A CN 107867270 B CN107867270 B CN 107867270B
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- Prior art keywords
- trailer
- snap ring
- brake
- shell
- centrifugal
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Classifications
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- 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, second one-way valve, servomotor driven change valve, brake, the first tracheae and the second tracheae；Centrifugal control mechanism includes the first bisecting snap ring, the second bisecting snap ring, sealing ring, spring, centrifugal-block and annular seal groove；First bisecting snap ring is equipped with radial sliding slot, and in the sliding slot for the first bisecting snap ring that centrifugal-block is slidably connected at, one end of spring is fixedly connected in the first bisecting snap ring, and the other end of spring is connected on centrifugal-block；The idler wheel of servomotor driven change valve is in contact with centrifugal-block or mutually separates；The gas outlet of first check valve is connected to trailer gas bag；The gas outlet of second one-way valve is connected to the air inlet of trailer booster pump；P mouthfuls of air inlet of servomotor driven change valve are connected to gas bag, and A mouthfuls of execution mouth of servomotor driven change valve are connected to trailer booster pump, and trailer booster pump is connected to the inner cavity of brake.Structure of the invention is simple, highly-safe.
Description
Technical field
The present invention relates to a kind of overspeed braking devices of trailer.
Background technique
Trailer could work after need to generally connecting with tractor, as shown in Fig. 2, the vehicle bridge of the trailer of the 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 together with the wheel of vehicle trailer, and wheel shaft 121 will not be with the vehicle wheel rotation of trailer.As shown in Figure 1, the 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, preceding bridge booster pump 112, rear axle boost pump 113, preceding bridge brake 114, rear axle brake vi 115 and tractor gas
Packet 116.The air inlet of trailer booster pump 100 executes mouth A2 mouthfuls with the second of foot brake valves 111 by tracheae and is connected to, trailer reinforcing
The liquid outlet of pump 100 is connected to trailer brakes 101.The gas outlet of the air compressor machine 110 of tractor respectively with tractor gas bag
116, it is connected to P2 mouthfuls of the second air inlet of foot brake valves 111 for P1 mouthfuls of the first air inlet of foot brake valves 111, foot brake valves 111
First execute mouth A1 mouthful and be connected to the air inlet of preceding bridge booster pump 112, the liquid outlet of preceding bridge booster pump 112 and preceding bridge brake
114 connections.The second of foot brake valves 111 executes the mouth A2 mouthfuls of air inlet and trailer booster pump 100 with rear axle boost pump 113 respectively
Air inlet connection, rear axle boost pump 113 liquid outlet be connected to rear axle brake vi 115.When driver steps on the foot of tractor
When brake valve 111, the pressed gas in gas bag 116 can arrive respectively preceding bridge brake 114, rear axle brake vi through foot brake valves 111
115 and trailer brakes 101, so that tractor and trailer be made to all have braking.Since above-mentioned Trailer braking device is under trailer
Slope when driving over the speed limit can not automatic braking, therefore safety is not high；It goes due also to above-mentioned Trailer braking device goes up a slope in trailer
When surprisingly breaking off relations when sailing with tractor can not automatic braking, therefore safety is not high.
Summary of the invention
A kind of overspeed braking device of the object of the present invention is to provide structures simple, highly-safe trailer.
To achieve the goals above, the technical scheme is that a kind of overspeed braking device of trailer, including trailer plus
Power pump, further includes centrifugal control mechanism, trailer gas bag, the first check valve, second one-way valve, servomotor driven change valve, brake, first
Tracheae and the second tracheae；The centrifugal control mechanism includes the first bisecting snap ring, the second bisecting snap ring, sealing ring, spring, centrifugation
Block and annular seal groove；First bisecting snap ring and the second bisecting snap ring are in semi-circular shape, the first bisecting snap ring and second
The end for the annulus that bisecting snap ring circumferential direction blind-mate forms an annulus and formed is equipped with annular seal groove, the first bisecting snap ring
It is equipped with radial sliding slot, in the sliding slot for the first bisecting snap ring that the centrifugal-block is slidably connected at, one end of the spring is solid
Surely the one end in the center of circle close to the first bisecting snap ring of the radial sliding slot of the first bisecting snap ring, the other end diameter of spring are connected to
To being outwards connected on centrifugal-block；The servomotor driven change valve be fixedly connected on the brake and the idler wheel of servomotor driven change valve with from
Heart block is in contact or mutually separates；The sealing ring is arranged in annular seal groove and sealing ring and brake form end face seal；
The air inlet of first check valve is connected to the first tracheae, and the gas outlet of the first check valve is connected to trailer gas bag；Described
The air inlet of two check valves is connected to the second tracheae, and the gas outlet of second one-way valve is connected to the air inlet of trailer booster pump；Institute
P mouthfuls of air inlet for stating servomotor driven change valve are connected to gas bag, the air inlet company for executing mouth A mouthfuls and trailer booster pump of servomotor driven change valve
Logical, the liquid outlet of trailer booster pump is connected to the inner cavity of brake.
The brake includes shell, end cap, stationary plate, movable plate, piston and reset 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 cavity of oil inlet and the shell of brake on one end of body and end cap
It is logical；The stationary plate is fixedly connected on shell and stationary plate arrangement alternate with movable plate, and stationary plate and movable plate are respectively positioned in the inner cavity of shell；
The piston is slidably connected in the inner cavity of shell；The reset spring is arranged in the inner cavity of shell and reset spring is set in
On piston, one end of reset spring is resisted against on shell, and the other end is resisted against on piston.
The section of the piston is in zigzag；The shell 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 of the invention first bisecting snap ring and second bisecting snap ring circumferential direction gapless match
The end for closing the annulus for forming an annulus and being formed is equipped with annular seal groove, and the first bisecting snap ring is equipped with radial sliding slot, institute
In the sliding slot for stating the first bisecting snap ring that centrifugal-block is slidably connected at, one end of the spring is fixedly connected on the first bisecting snap ring
Radial sliding slot the center of circle close to the first bisecting snap ring one end, the other end of spring is radially outwardly connected to centrifugal-block
On；The servomotor driven change valve is fixedly connected on the brake and the idler wheel of servomotor driven change valve is in contact with centrifugal-block or mutually separates；
The air inlet of first check valve is connected to the first tracheae, and the gas outlet of the first check valve is connected to trailer gas bag；Described
The air inlet of two check valves is connected to the second tracheae, and the gas outlet of second one-way valve is connected to the air inlet of trailer booster pump；Institute
P mouthfuls of air inlet for stating servomotor driven change valve are connected to gas bag, the air inlet company for executing mouth A mouthfuls and trailer booster pump of servomotor driven change valve
Logical, the liquid outlet of trailer booster pump is connected to the inner cavity of brake；Due also in the use of the present invention, by the first tracheae 7 with lead
Second tracheae 8 is executed mouth with second of the foot brake valves 111 on tractor by the gas outlet connection for drawing the air compressor machine 110 on vehicle
A2 mouthfuls of connections, the first bisecting snap ring 11 and the second bisecting snap ring 12 are bolted to connection on the wheel hub 120 of trailer, will
The shell 61 of brake 6 is fixedly connected on the wheel shaft 121 of trailer, and the movable plate 64 of brake 6 is fixedly connected on to the wheel of trailer
On hub 120.Thus when tractor drives trailer to drive over the speed limit on gug road, the rotation speed of the wheel hub of trailer will add
Fastly, the rotation speed of the first bisecting snap ring can also be accelerated.Centrifugal-block can overcome the spring force diameter of spring under the influence of centrifugal force
To being displaced outwardly, centrifugal-block first contacts then pushing rolling wheels with the idler wheel of servomotor driven change valve keeps spool mobile, and servomotor driven change valve changes
To, at this moment P mouthfuls of the air inlet of servomotor driven change valve with execute mouth A mouthfuls and be connected to.Pressed gas in this way in trailer gas bag enters trailer
The pressure oil of booster pump, the liquid outlet of trailer booster pump enters brake, makes brake, i.e. the present invention can make trailer under
It slope can be highly-safe with automatic braking when driving over the speed limit.When surprisingly breaking off relations when trailer is in up-hill journey with tractor, the first gas
Pipe and the second tracheae can be pulled off, and trailer can glide under gravity and trailer gliding speed can be getting faster, i.e.,
The revolving speed of the wheel hub of trailer can be getting faster, and the revolving speed for being fixedly connected on the first bisecting snap ring on the wheel hub of trailer also can be increasingly
Fastly, the centrifugal-block being slidably connected in this way in the radial sliding slot of the first bisecting snap ring can overcome spring under the influence of centrifugal force
Spring force be moved radially outward, centrifugal-block first contact with the idler wheel of servomotor driven change valve then pushing rolling wheels make spool move, machine
Dynamic reversal valve commutation, at this moment P mouthful of the air inlet of servomotor driven change valve with execution mouth A mouthfuls be connected to.Pressure gas in this way 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
Automatic braking when trailer being enable surprisingly to break off relations in up-hill journey, it is highly-safe.(2), due to the first bisecting snap ring of the invention
With the second bisecting snap ring circumferential direction blind-mate formed an annulus and formed annulus end be equipped with annular seal groove, first point
Half snap ring is equipped with radial sliding slot, in the sliding slot for the first bisecting snap ring that the centrifugal-block is slidably connected at, the sealing ring
It is arranged in annular seal groove and sealing ring and brake forms end face seal, thus the first bisecting snap ring can not only be used to put
Centrifugal-block can be placed by setting, and can be used to place sealing ring and be used to seal, and structure is very simple.
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated.
Detailed description of the invention
Fig. 1 is the catenation principle figure of the Trailer braking device of the prior art and the brake apparatus of tractor；
Fig. 2 is the axle of the trailer of the prior art and the connection schematic diagram of wheel hub；
Fig. 3 is control principle drawing of the invention；
Fig. 4 is the schematic diagram of centrifugal control mechanism of the invention；
Fig. 5 is the A-A schematic cross-sectional view of Fig. 4；
Fig. 6 be centrifugal control mechanism of the invention, servomotor driven change valve (5) and brake (6) be connected to trailer axle and
Schematic diagram on wheel hub；
Fig. 7 is the control principle drawing that the present invention is connect with the brake apparatus of tractor；
Fig. 8 is the first bisecting snap ring of centrifugal control mechanism, the connection schematic diagram of spring, centrifugal-block and servomotor driven change valve；
Fig. 9 is the enlarged diagram of the B-B section view when centrifugal-block of Fig. 8 is mutually separated with the idler wheel of servomotor driven change valve；
Figure 10 is the enlarged diagram of the B-B section view when centrifugal-block of Fig. 8 is in contact with the idler wheel of servomotor driven change valve.
Appended drawing reference in above-mentioned attached drawing is as follows: centrifugal control mechanism 1, trailer gas bag 2, the first check valve 3, and second is unidirectional
Valve 4, servomotor driven change valve 5, brake 6, the first tracheae 7 and the second tracheae 8, the first bisecting snap ring 11, sliding slot 11-1, second point half
Snap ring 12, sealing ring 13, spring 14, centrifugal-block 15, annular seal groove 16, shell 61, left shell 61-1, right shell body 61-2, end
Lid 62, oil inlet 62-1, stationary plate 63, movable plate 64, piston 65, reset spring 66, trailer booster pump 100, trailer brakes 101,
Air compressor machine 110, foot brake valves 111, preceding bridge booster pump 112, rear axle boost pump 113, preceding bridge brake 114, rear axle brake vi
115, tractor gas bag 116, wheel hub 120, wheel shaft 121.
Specific 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
It is that " XM60 " type booster pump is produced by Shengli Brake Co., Ltd., Wuhu.It further include centrifugal control mechanism 1, trailer gas bag
2, the first check valve 3, second one-way valve 4, servomotor driven change valve 5, brake 6, the first tracheae 7 and the second tracheae 8；Servomotor driven change valve
5 make spool movement not need manual operation just so that servomotor driven change valve 5 be made to commutate by the idler wheel 5-1 of external force pressure spool end
It can be switched, the model of servomotor driven change valve 5 can be 23C-25B or 23C-25BH.The centrifugal control mechanism 1 includes first point
Half snap ring 11, the second bisecting snap ring 12, sealing ring 13, spring 14, centrifugal-block 15 and annular seal groove 16；First point of half card
Ring 11 and the second bisecting snap ring 12 are in semi-circular shape, the first bisecting snap ring 11 and the circumferential blind-mate of the second bisecting snap ring 12
The end for the annulus for forming an annulus and being formed is equipped with annular seal groove 16, and the first bisecting snap ring 11 is equipped with radial sliding slot
In 11-1, the sliding slot 11-1 for the first bisecting snap ring 11 that the centrifugal-block 15 is slidably connected at, one end of the spring 14 is fixed
It is connected to the one end in the center of circle close to the first bisecting snap ring 11 of the radial sliding slot 11-1 of the first bisecting snap ring 11, spring 14
The other end is radially outwardly connected on centrifugal-block 15；As shown in fig. 6, the servomotor driven change valve 5 is fixedly connected on brake 6
And the idler wheel 5-1 of servomotor driven change valve 5 is in contact with centrifugal-block 15 or mutually separates；As shown in Fig. 8 to Figure 10, when centrifugal-block 15 from
When mental and physical efforts can overcome the active force of spring 14, centrifugal-block 15 can after the radially outward sliding of the first bisecting snap ring 11 with it is motor-driven
The idler wheel 5-1 of reversal valve 5 is in contact and pushing rolling wheels 5-1 makes spool movement, so that servomotor driven change valve 5 is made to commutate, it is at this moment motor-driven
Mouth A mouthfuls with execution of P mouthfuls of air inlet of reversal valve 5 is connected to.When the centrifugal force of centrifugal-block 15 cannot overcome the active force of spring 14,
Centrifugal-block 15 connects with the idler wheel 5-1 of servomotor driven change valve 5 under action from the spring 14 to be separated, the at this moment air inlet of servomotor driven change valve 5
Mouthfuls P mouthful with execution mouth A mouthfuls be not connected to.As shown in fig. 6, the sealing ring 13 be arranged in annular seal groove 16 and sealing ring 13 with
Brake 6 forms end face seal；As shown in Figure 3 and Figure 7, the air inlet of first check valve 3 is connected to the first tracheae 7, this
Invention is connected to the gas outlet of the air compressor machine 110 on tractor when in use, by the first tracheae 7, the gas outlet of the first check valve 3
It is connected to trailer gas bag 2；When trailer gug Lu Shangyu tractor break off relations when, the tracheae that trailer is connect with tractor i.e. first
Tracheae 7 can be pulled off, and the trailer gas bag 2 after the first tracheae 7 that trailer is connect with tractor is pulled off is arranged after the first check valve 3
In pressed gas will not be flowed in atmosphere from the first tracheae 7 broken.The air inlet and the second tracheae of the second one-way valve 4
8 connections are connected in the use of the present invention, the second tracheae 8 is executed mouth A2 mouthfuls with second of the foot brake valves 111 on tractor,
The gas outlet of second one-way valve 4 is connected to the air inlet of trailer booster pump 100；P mouthfuls of the air inlet of the servomotor driven change valve 5 and gas
2 connection of packet, A mouthfuls of mouth of execution of servomotor driven change valve 5 are connected to the air inlet of trailer booster pump 100, and trailer booster pump 100 goes out liquid
Mouth is connected to the inner cavity of brake 6.It is arranged after second one-way valve 4 after the second tracheae 8 that trailer is connect with tractor is pulled off
Pressed gas in trailer gas bag 2 will not flow in atmosphere after servomotor driven change valve 5 from breaked second tracheae 8.
As shown in fig. 6, the brake 6 includes shell 61, end cap 62, stationary plate 63, movable plate 64, piston 65 and reset spring
66；The end cap 62, which is fixedly connected on one end of shell 61 and end cap 62, has oil inlet 62-1, and trailer booster pump 100 goes out
Liquid mouth is connected to by oil inlet 62-1 with the inner cavity of the shell 61 of brake 6；The stationary plate 63 be fixedly connected on shell 61 and
The arrangement alternate with movable plate 64 of stationary plate 63, stationary plate 63 and movable plate 64 are respectively positioned in the inner cavity of shell 61；The piston 65 is slidably connected
In the inner cavity of shell 61；The reset spring 66 is arranged in the inner cavity of shell 61 and reset spring 66 is set in piston 65
On, one end of reset spring 66 is resisted against on shell 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 cavity of shell 61 of brake 6 by oil inlet 62-1, pressure oil pushes piston 65 to be moved to the left,
Piston 65 compresses movable plate 64, combines sound piece 63 and movable plate 64, trailer braking protection valve；When the liquid outlet of trailer booster pump 100 does not have
When pressure oil enters the inner cavity of shell 61 of brake 6 by oil inlet 62-1, piston 65 under the promotion of reset spring 66 to
It moves right, separates sound piece 63 and movable plate 64, trailer releases braking.
The section of the piston 65 is in zigzag；The shell 61 includes left shell 61-1 and right shell body 61-2, the right shell
The section of body 61-2 is L-shaped.Setting can not only make piston 65 and the contact area of movable plate 64 bigger in this way, in the pressure of pressure oil
Keep brake force bigger in identical situation, brake design can be obtained in the case where same brake force smaller；And it can make
Reset 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, by the outlet of the first tracheae 7 and the air compressor machine 110 on tractor
Second tracheae 8 is executed mouth A2 mouthfuls with second of the foot brake valves 111 on tractor and is connected to, by the first bisecting snap ring by mouth connection
11 and second bisecting snap ring 12 be bolted to connection on the wheel hub 120 of trailer, such first bisecting snap ring 11 and second
Bisecting snap ring 12 can rotate together with the wheel hub 120 of trailer.The shell 61 of brake 6 is fixedly connected on to the wheel shaft 121 of trailer
On, since the wheel shaft 121 of trailer is not rotated when trailer is run, it is fixedly connected on the shell of the brake 6 on wheel shaft 121
Body 61 will not rotate；The movable plate 64 of brake 6 is fixedly connected on the wheel hub 120 of trailer, movable plate when such trailer is run
64 can rotate together with the wheel hub 120 of trailer.
Working principle of the present invention is as follows: it is motor-driven when tractor drives trailer not drive over the speed limit on gug road
P mouthfuls of the air inlet of reversal valve 5 with execute mouth A mouthfuls and be not communicated with, the pressed gas in trailer gas bag 2 will not enter trailer booster pump
100.When needing to brake, the foot brake valves 111 on tractor are stepped on by driver, make the pressed gas in tractor gas bag 116
Enter trailer booster pump 100 through second one-way valve 4 again through foot brake valves 111, the pressure oil of the liquid outlet of trailer booster pump 100 into
Enter brake 6, brakes brake 6.When tractor drives trailer to drive over the speed limit on gug road, the wheel hub 120 of trailer
Rotation speed will accelerate, since the first bisecting snap ring 11 is bolted to connection on the wheel hub 120 of trailer,
The rotation speed of one bisecting snap ring 11 can also be accelerated.It is slidably connected in the radial sliding slot 11-1 of the first bisecting snap ring 11 in this way
Centrifugal-block 15 spring force of spring 14 can be overcome to be moved radially outward under the influence of centrifugal force, centrifugal-block 15 is in centrifugal force
Then rear first contact with the idler wheel 5-1 of servomotor driven change valve 5 that be moved radially outward of effect the first bisecting snap ring of lower edge 11 pushes rolling
Wheel 5-1 keeps spool mobile, and servomotor driven change valve 5 commutates, at this moment P mouthful of the air inlet of servomotor driven change valve 5 with execution mouth A mouthfuls be connected to.This
Pressed gas in sample trailer gas bag 2 enters trailer booster pump 100, and the pressure oil of the liquid outlet of trailer booster pump 100 enters system
Dynamic device 6 brakes brake 6, i.e., the present invention can make trailer can be with automatic braking when descending is driven over the speed limit, therefore safety
It is high.
When surprisingly breaking off relations when trailer is in up-hill journey with tractor, 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
It is getting faster, i.e. the revolving speed of the wheel hub 120 of trailer can be getting faster, and be fixedly connected on first point of half card on the wheel hub 120 of trailer
The revolving speed of ring 11 can be also getting faster, the centrifugal-block being slidably connected in the radial sliding slot 11-1 of the first bisecting snap ring 11 in this way
15 can overcome under the influence of centrifugal force the spring force of spring 14 to be moved radially outward, the edge under the influence of centrifugal force of centrifugal-block 15
The rear then pushing rolling wheels 5-1 that first contacts with the idler wheel 5-1 of servomotor driven change valve 5 that is moved radially outward of first bisecting snap ring 11 makes valve
Core is mobile, and servomotor driven change valve 5 commutates, at this moment P mouthful of the air inlet of servomotor driven change valve 5 with execution mouth A mouthfuls be connected to.Trailer gas bag in this way
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 to make
Dynamic device 6 is braked, i.e., the automatic braking when present invention can enable trailer surprisingly break off relations in up-hill journey with tractor, therefore safety
It is high.
As shown in fig. 6, the braking principle of brake 6 of the invention is as follows: when the pressure of the liquid outlet of trailer booster pump 100
When oil enters the inner cavity of shell 61 of brake 6 by oil inlet 62-1, pressure oil pushes piston 65 to be moved to the left, and piston 65 is pressed
Tight movable plate 64 combines stationary plate 63 and movable plate 64, and the wheel shaft 121 of trailer does not rotate when due to trailer operation, is fixedly connected on
The shell 61 of brake 6 on wheel shaft 121 will not rotate, therefore the stationary plate 63 being fixedly connected on shell 61 will not revolve
Turn, after stationary plate 63 and the combination of movable plate 64, the revolving speed of movable plate 64, which initially drops until, no longer to be rotated, the extension being fixedly connected with movable plate 64
The revolving speed of the wheel hub 120 of vehicle, which also initially drops until, no longer to be rotated, trailer braking protection valve.When the liquid outlet of trailer booster pump 100 does not have
When pressure oil enters the inner cavity of shell 61 of brake 6 by oil inlet 62-1, piston 65 under the promotion of reset spring 66 to
It moves right, separates sound piece 63 and movable 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: further include centrifugation control machine
Structure (1), trailer gas bag (2), the first check valve (3), second one-way valve (4), servomotor driven change valve (5), brake (6), the first gas
Manage (7) and the second tracheae (8)；The centrifugal control mechanism (1) include the first bisecting snap ring (11), the second bisecting snap ring (12),
Sealing ring (13), spring (14), centrifugal-block (15) and annular seal groove (16)；First bisecting snap ring (11) and second point half
Snap ring (12) is in semi-circular shape, and the first bisecting snap ring (11) and the circumferential blind-mate of the second bisecting snap ring (12) form a circle
The end of ring and the annulus formed is equipped with annular seal groove (16), and the first bisecting snap ring (11) is equipped with radial sliding slot (11-
1) in the sliding slot (11-1) for the first bisecting snap ring (11) that, the centrifugal-block (15) is slidably connected at, the one of the spring (14)
End is fixedly connected on the center of circle close to the first bisecting snap ring (11) of the radial sliding slot (11-1) of the first bisecting snap ring (11)
One end, the other end of spring (14) are radially outwardly connected on centrifugal-block (15)；The servomotor driven change valve (5) is fixedly connected on
On brake (6) and the idler wheel (5-1) of servomotor driven change valve (5) is in contact with centrifugal-block (15) or mutually separates；The sealing ring
(13) it is arranged in annular seal groove (16) and sealing ring (13) and brake (6) forms end face seal；First check valve
(3) air inlet is connected to the first tracheae (7), and the gas outlet of the first check valve (3) is connected to trailer gas bag (2)；Described second
The air inlet of check valve (4) is connected to the second tracheae (8), the gas outlet of second one-way valve (4) and trailer booster pump (100) into
Port connection；P mouthfuls of air inlet of the servomotor driven change valve (5) are connected to gas bag (2), A mouthfuls of the execution mouth of servomotor driven change valve (5) with
The air inlet of trailer booster pump (100) is connected to, and the liquid outlet of trailer booster pump (100) is connected to the inner cavity of brake (6).
2. the overspeed braking device of trailer according to claim 1, it is characterised in that: the brake (6) includes shell
(61), end cap (62), stationary plate (63), movable plate (64), piston (65) and reset spring (66)；The end cap (62) is fixedly connected on
There is oil inlet (62-1) on one end of shell (61) and end cap (62), the liquid outlet of trailer booster pump (100) passes through oil inlet
(62-1) is connected to the inner cavity of the shell (61) of brake (6)；The stationary plate (63) is fixedly connected on shell (61) and stationary plate
(63) with movable plate (64) alternate arrangement, stationary plate (63) and movable plate (64) are respectively positioned in the inner cavity of shell (61)；The piston (65)
It is slidably connected in the inner cavity of shell (61)；The reset spring (66) is arranged in the inner cavity of shell (61) and reset spring
(66) it is set on piston (65), one end of reset spring (66) is resisted against on shell (61), and 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 section of the piston (65) is in Z
Font；The shell (61) includes left shell (61-1) and right shell body (61-2), and the section of the right shell body (61-2) is L-shaped.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911003978.2A CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
| CN201711086650.2A CN107867270B (en) | 2017-11-07 | 2017-11-07 | The overspeed braking device of 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 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911003867.1A Division CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
| CN201911003978.2A Division CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
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| Publication Number | Publication Date |
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| CN107867270A CN107867270A (en) | 2018-04-03 |
| CN107867270B true CN107867270B (en) | 2019-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911003867.1A Withdrawn CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
| CN201711086650.2A Active CN107867270B (en) | 2017-11-07 | 2017-11-07 | The overspeed braking device 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 |
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| CN201911003867.1A Withdrawn CN110843743A (en) | 2017-11-07 | 2017-11-07 | Working method of trailer |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911003978.2A Withdrawn CN110723125A (en) | 2017-11-07 | 2017-11-07 | Trailer |
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| CN (3) | CN110843743A (en) |
Citations (4)
| 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 |
| 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 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US9908377B2 (en) * | 2015-12-01 | 2018-03-06 | Hayes Towing Electronics LLC | Apparatus and method for sway control |
| 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 |
-
2017
- 2017-11-07 CN CN201911003867.1A patent/CN110843743A/en not_active Withdrawn
- 2017-11-07 CN CN201711086650.2A patent/CN107867270B/en active Active
- 2017-11-07 CN CN201911003978.2A patent/CN110723125A/en not_active Withdrawn
Patent Citations (4)
| 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 |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110723125A (en) | 2020-01-24 |
| CN107867270A (en) | 2018-04-03 |
| CN110843743A (en) | 2020-02-28 |
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