CN207120747U - Tractor trailer brake control valve - Google Patents
Tractor trailer brake control valve Download PDFInfo
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- CN207120747U CN207120747U CN201721044051.XU CN201721044051U CN207120747U CN 207120747 U CN207120747 U CN 207120747U CN 201721044051 U CN201721044051 U CN 201721044051U CN 207120747 U CN207120747 U CN 207120747U
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Abstract
The utility model tractor trailer brake control valve, by valve body (1), inlet suction port (21), plate valve (22), plate valve seat (23), positioning sleeve (24), closed-loop (25), plate valve compression spring (26), pushing cylinder (27), the compressed air disengaging control two-bit triplet air-valve device of pushing cylinder compression spring (28) composition, piston (31), piston stage clip (32), the hydraulic control transmission valve gear and retaining bearing pin (40) of end cap (33) composition, torsion bar (42), locating piece (43), reset tension spring (44), the hand-operated brake locking device of pull bar (45) composition is formed.The utility model tractor trailer brake control valve footbrake is light, safe and reliable.
Description
Technical field
The utility model relates to tractor trailer brake control valve, is straight using tractor hydraulic brake pump hydraulic oil
The tractor trailer brake control valve of drive control is connect, so that trailer carries out control for brake simultaneously with tractor.
Background technology
Tractor braking system is divided into main frame and trailer two parts, and main frame brakes passes through in tractor hydraulic brake pump
The pressure oil got promotes brake cylinder to realize braking.
Tractor-trailer braking system be by a two-bit triplet Air Valve Control, under non-brake state from tractor air pump to
Compressed air is provided in trailer brake system and opens tractor trailer brake apparatus；It is then that tractor trailer is braked to be during braking
Compressed air discharge release tractor trailer brake apparatus in system is braked.
Existing tractor trailer brake control valve, is the brake control valve that a kind of two-position three way air valve is formed, and this is dilatory
The manipulation of machine trailer brake control valve is to pass through the hydraulic cylinder on hydraulic-driven trailer, hydraulic pressure by tractor brake hydraulic brake pump
Cylinder piston rod drives pull bar, and pull bar drives two-position three way trailer brake control valve piston action；Step on brake pedal（Tractor
Pedal on brake hydraulic brake pump）Tractor brake hydraulic brake pump output hydraulic pressure oil, drives the hydraulic cylinder on trailer, hydraulic pressure
Cylinder piston rod drives pull bar, and pull bar drives two-position three way trailer brake control valve piston action, discharges trailer brake pressure, makes extension
Car brakes simultaneously with tractor；Lift brake pedal, hydraulic cylinder piston, pull bar, the brake control of two-position three way trailer on trailer
The piston of valve is resetted, the injecting compressed air into trailer brake air system, opens trailer brake gear.
The shortcomings that above-mentioned prior art tractor trailer brake control valve, deficiency was：
Driven first, trailer brake control valve needs a single hydraulic cylinder to be connected by pull bar, needs pair when installing and using
The length of pull bar is adjusted, and the precision of pull bar length adjustment directly affects the accuracy and security performance of brake control, and it draws
Pole length relies on manual adjustment, and accuracy is poor；
Second, the valve stem end connection rubber cup inside brake control valve carries out being slidingly sealed cooperation, rubber peel with valve pocket
Bowl sealing structure bears that air pressure area is big, pressure is big, and the power required for pull bar pulls valve rod is also bigger, i.e., the pulling force of pull bar will
Greatly, because the hydraulic fluid pressure of tractor hydraulic brake pump output is provided by pedal force, so the pulling force of pull bar is also by pin
Legpower provides, foot-operated painstaking when causing tractor and trailer while braking, and rubber bowl sealing service life easy to wear is short；
Third, in braking state, if operator's pin is lifted off brake pedal, the braking state of trailer terminates.
Utility model content
The purpose of this utility model is to be directed to above-mentioned the deficiencies in the prior art, there is provided a kind of safe and reliable draws
Machine trailer brake control valve.Overcoming prior art trailer brake control valve needs quality caused by manual adjustment pull bar length
The problem of pin can not leave tractor brake pedal when hidden danger and foot-operated painstaking, brake.
The utility model is driven valve gear by valve body, compressed air disengaging control two-bit triplet air-valve device, hydraulic control
And hand-operated brake locking device is formed.
Compressed air disengaging control two-bit triplet air-valve device is arranged on the left side of valve body, compressed air disengaging control two
The function of position three-way air valve device is on or off brake compression air pipe line, Trailer braking device is inputted or discharge braking
Compressed air, control trailer brake or not braked.
Compressed air disengaging control two-bit triplet air-valve device is by inlet suction port 21, plate valve 22, plate valve seat 23, positioning sleeve
24, closed-loop 25, plate valve compression spring 26, pushing cylinder 27, pushing cylinder compression spring 28 forms.
The first seam table top 11 is offered in the left side of 1 round cavity of valve body 10, is opened at the middle part of the first seam table top 11
Gas port A is set out, gas outlet A is corresponded on the first seam table top 11 opened up on body cavity face positioning sleeve 24 is set, positioned
Cover and be distributed on 24 peripheries provided with venthole 24a, closed-loop 25 is set on the right side of positioning sleeve 24, in the outer ring surface of closed-loop 25
Sealing ring 25b is provided with, in the left side arranging plate valve seat 23 of positioning sleeve 24, sealing ring is provided with the outer ring surface of plate valve seat 23
23b。
The second seam table top 12 and the 3rd seam table top are offered in the left side of the first seam of the round cavity table top 11 of valve body 1
13, right-hand member and the screw thread of body cavity face the second seam table top 12 of inlet suction port 21 are connected, the right side of inlet suction port 21
Coordinate with the left side of plate valve seat 23, the right side stripper plate valve seat 23 of inlet suction port 21, make plate valve seat 23, positioning sleeve 24, envelope
The axial restraint of closed loop 25；Sealing ring 13a is provided between the mating surface of the 3rd seam table top 13 on inlet suction port 21 and valve body.
Offer air admission hole 21a, spring base hole 21b, plate valve chamber 21c, plate successively from left to right at the center of inlet suction port 21
The cylindrical gap of being slided between plate valve chamber 21c inner ring surfaces of valve 22 coordinates in plate valve chamber 21c, and plate valve compression spring 26 is arranged on bullet
Pressure-applying plane valve 22 in the 21b of spring abutment hole, makes its right end face of plate valve 22 and the left end face of plate valve seat 23 reclines cooperation, in plate valve
The left-hand end of seat 23 is provided with sealing ring 23a, and air channel 21d is offered on the right end plate valve pocket ring portion 21e of inlet suction port 21.
Pushing cylinder 27 is arranged on the left side of the round cavity 10 of valve body 1, the outer ring surface of pushing cylinder 27 and the inner ring surface of closed-loop 25
It is slidably matched, sealing ring 25a is provided with the inner ring surface of closed-loop 25, the right-hand member of pushing cylinder 27 is provided with flange 27a, and pushing cylinder 27 is right
The flange 27a outer ring surfaces at end are slidably matched with the round cavity face of valve body 1, and pushing cylinder compression spring 28 is placed in pushing away for the right side of closed-loop 25
On cylinder 27 is cylindrical, thrust that pushing cylinder compression spring 28 is implemented to move to the right to pushing cylinder 27, in its right end face of plate valve 22
Sealing ring 22a is provided with, sealing ring 22a coordinates with the left end face of pushing cylinder 27.
Hydraulic control transmission valve gear is arranged on the right side of valve body, and the function of hydraulic control transmission valve gear is transmission control
The opening and closing of the two-bit triplet air valve of left side processed.
Hydraulic control transmission valve gear is made up of piston 31, piston stage clip 32, end cap 33：
The 4th seam table top 14 is provided with the right side opening of 1 round cavity of valve body 10, piston first is offered on piston 31 and is stopped
Mouth table top 31a, piston 31 pass through the 4th described seam table top 14 and piston the first seam table top 31a with valve body round cavity 10
It is slidably installed, sealing ring 31b, 31c, the left end face of piston 31 and the right side of pushing cylinder 27 is provided with the outer ring surface of piston 31
End face reclines cooperation, the vertical end face 14a and the first stopping table on piston 31 of the 4th seam table top 14 of the right side of 1 round cavity of valve body 10
Face 31a vertical end face 314 is in axially a determining deviation, that is, forms hydraulic cavities G, to should hydraulic cavities G offer oil-feed on valve body 1
Hole 15 and steam vent 16, steam vent 31e, piston stage clip mounting hole 32a are offered successively from left to right at the center of piston 31, in valve
The right-hand member of body 1 is fixedly connected with end cap 33, matches somebody with somebody in the piston stage clip mounting hole 32a that piston stage clip 32 is arranged in piston 31 with end cap 33
Conjunction implements impetus to the left to piston 31.
After the utility model is realizes that trailer implements brake, pin is played in operator's platform, no longer jams on tractor brake pump
After pedal, trailer remains to keep braking state, and there is provided hand-operated brake locking device.
Hand-operated brake locking device is made up of retaining bearing pin 40, torsion bar 42, locating piece 43, reset tension spring 44, pull bar 45；
Piston the second seam table top 31d is offered in the left side of piston 31, axis hole 40a is radially offered on valve body 1,
Axis hole 40a on retaining bearing pin 40 and valve body, which is axially confined, circumferentially rotates cooperation installation, the outer ring surface of the lower end of retaining bearing pin 40 with
Piston the second seam table top 31d of piston 31 vertical end face 311 coordinates, and it is flat to be provided with axle on the bottom periphery of retaining bearing pin 40
Concave station face K, torsion bar 42 is fixedly connected with the upper end of retaining bearing pin 40, reset tension spring 44 is connected between torsion bar 42 and the right-hand member of valve body 1,
Locating piece 43 is fixedly installed on valve body 1, the revolution under the effect of extension spring 44 is reset into capable positioning to locating piece 43 to torsion bar 42.
When brake state of a control is moved at trailer, manually pull bar 45, pull torsion bar 42 to drive retaining bearing pin 40 to rotate
90 degree, the periphery of retaining bearing pin 40 is set to coordinate with the vertical end face 311 of piston 31, limitation piston 31 moves again to the left, makes originally to drag
Machine drawing trailer brake control valve keeps brake state of a control；When terminating manual locking control trailer braking state, decontrol and draw manually
Bar 45, torsion bar 42 drive retaining pin axle 40 to turn round to reset under the effect of reset tension spring 44, make the axle that is opened up on retaining bearing pin 40 flat
Platform K is to the vertical end face 311 of piston 31, being moved to the left piston 31, this tractor trailer brake control valve is kept not
Brake state of a control.
The inlet suction port 21 of the utility model compressed air disengaging control two-bit triplet air-valve device part connects tractor
Brake air compression pump, the gas outlet A on valve body 1 pass through interface tube A ' connection trailer brake compression air hoses, and hydraulic control passes
Fuel feed hole 15 on the valve body 1 of driving valve device part connects tractor footbrake pump by interface tube 15 '.
The utility model in use, lift it is foot-operated jam on, i.e., it is not foot-operated when jamming on tractor footbrake pump, draw under-chassis
Brake pump not oil extraction is stepped on, i.e., the not oil-feed of fuel feed hole 15 on valve body 1, no pressure oil effect in hydraulic cavities G, piston 31 is by piston pressure
The thrust to the left of spring 32, overcome pressure that pushing cylinder compression spring 28 is acted on to the right pushing cylinder 27 and plate valve compression spring 26, enter
The pressure (hydraulic cavities G backflows) that the inside brake compressed air of gas joint 21 is acted on to the right plate valve 22 is moved to the left, while piston 31
Left end ejection pushing cylinder 27 be moved to the left, the left end ejection plate valve 22 of pushing cylinder 27 is moved to the left, plate valve 22 and the end face of plate valve seat 23
Separation, plate valve 22 are opened, and the inside brake compressed air of inlet suction port 21 is flowed to the right side of plate valve 22 through air channel 21d, then pass through
Annular distance, the venthole 24a on positioning sleeve 24, the venthole A on valve body 1 are defeated by the brake dress of tractor trailer in plate valve seat 23
Put, trailer is in not braking state.
When it is foot-operated jam on tractor brake pump when, brake pump oil extraction, pressure oil is by the fuel feed hole 15 on valve body 1 to hydraulic pressure
Injected in chamber G, promote piston 31 to overcome the pressure of piston stage clip 32, piston 31 is moved right, pushing cylinder 27 compresses in its pushing cylinder
Spring 28 moves right under acting on, and the left end face of pushing cylinder 27 departs from its right end face formation gap of plate valve 22, and plate valve 22 is at it
Plate valve compression spring 26 is moved right under acting on, and plate valve 22 is bonded with the end face of plate valve seat 23, and plate valve 22 is closed, trailer brake dress
Compressed air in putting is by annular distance, pushing cylinder 27 in the venthole A on valve body 1, the venthole 24a on positioning sleeve 24, plate valve seat 23
The gap of left end face and its right end face of plate valve 22, the endoporus 27b of pushing cylinder 27, the endoporus 31e of piston 31 are discharged, and tractor trailer is stopped
Car device is braked.
The utility model is safe and reliable, plate valve 22, pushing cylinder 27, the axial direction of piston 31 linkage shift motion, by design chi
Very little guarantee, so being affected with prior art by pull bar, the mode of adjusting yoke length is needed to compare, reliability is high, safety in utilization
It is good, no hidden danger.
Rubber cup stress air pressure area is small compared with the prior art due to plate valve 22 for the utility model, and it is small to bear pressure, and
And can by adjust setting piston stage clip 32 to the thrust to the left of piston 31 come balance on pushing cylinder 27 by plate valve compression spring 26,
Pushing cylinder compression spring 28, inlet suction port 21a air pressures act on the thrust on piston 31 to the right, so, it can reduce as far as possible
Promote piston 31 to move right in hydraulic cavities G and implement the pressure of the required pressure oil of brake, it is hereby achieved that as far as possible small
Pedal force jams on tractor footbrake pump, so footbrake control is light.
The utility model is coordinated using plate valve 22 and the sealing ring 23a on the end of plate valve seat 23, compared with the prior art rubber peel
Bowl structure, stable and reliable for performance, the service life of plate valve 22 length.
The utility model is furnished with hand-operated brake locking device, and pin can not leave tractor brake pedal when solving trailer brake
The problem of.
Brief description of the drawings
Fig. 1,2 are the utility model structural perspectives.
Fig. 3 is Fig. 1 top view.
Fig. 4 is Fig. 3 A-A cross section structure diagrams, and which show working condition when not braking.
Fig. 5 is Fig. 3 A-A cross section structure diagrams, and which show working condition during brake.
Fig. 6 is Fig. 4 B-B sectional views.
Embodiment
The utility model is driven valve gear by valve body, compressed air disengaging control two-bit triplet air-valve device, hydraulic control
And hand-operated brake locking device is formed.
Compressed air disengaging control two-bit triplet air-valve device is by inlet suction port 21, plate valve 22, plate valve seat 23, positioning sleeve
24, closed-loop 25, plate valve compression spring 26, pushing cylinder 27, pushing cylinder compression spring 28 forms.
The first seam table top 11 is offered in the left side of 1 round cavity of valve body 10, is opened at the middle part of the first seam table top 11
Gas outlet A is corresponded to if trailer brakes compressed air outlet port A, on the first seam table top 11 for opening up on body cavity face to set
Positioning sleeve 24 is put, is distributed on the periphery of positioning sleeve 24 provided with venthole 24a, closed-loop is set on the right side of positioning sleeve 24
25, sealing ring 25b is provided with the outer ring surface of closed-loop 25, in the left side arranging plate valve seat 23 of positioning sleeve 24, in plate valve seat 23
Outer ring surface is provided with sealing ring 23b.
The second seam table top 12 and the 3rd seam table top are offered in the left side of the first seam of the round cavity table top 11 of valve body 1
13, right-hand member and the screw thread of body cavity face the second seam table top 12 of inlet suction port 21 are connected, the right side of inlet suction port 21
Coordinate with the left side of plate valve seat 23, the right side stripper plate valve seat 23 of inlet suction port 21, make plate valve seat 23, positioning sleeve 24, envelope
The axial restraint of closed loop 25；Sealing ring 13a is provided between the mating surface of the 3rd seam table top 13 on inlet suction port 21 and valve body.
Offer air admission hole 21a, spring base hole 21b, plate valve chamber 21c, plate successively from left to right at the center of inlet suction port 21
The cylindrical gap of being slided between plate valve chamber 21c inner ring surfaces of valve 22 coordinates in plate valve chamber 21c, and plate valve compression spring 26 is arranged on bullet
Pressure-applying plane valve 22 in the 21b of spring abutment hole, makes its right end face of plate valve 22 and the left end face of plate valve seat 23 reclines cooperation, in plate valve
The left-hand end of seat 23 is provided with sealing ring 23a, and air channel 21d is offered in the right end plate valve pocket ring portion 21e of inlet suction port 21.
Pushing cylinder 27 is arranged on the left side of the round cavity 10 of valve body 1, the outer ring surface of pushing cylinder 27 and the inner ring surface of closed-loop 25
It is slidably matched, sealing ring 25a is provided with the inner ring surface of closed-loop 25, the right-hand member of pushing cylinder 27 is provided with flange 27a, and pushing cylinder 27 is right
The flange 27a outer ring surfaces at end are slidably matched with the round cavity face of valve body 1, and pushing cylinder compression spring 28 is placed in pushing away for the right side of closed-loop 25
On cylinder 27 is cylindrical, thrust that pushing cylinder compression spring 28 is implemented to move to the right to pushing cylinder 27, in its right end face of plate valve 22
Sealing ring 22a is provided with, sealing ring 22a coordinates with the left end face of pushing cylinder 27.
Hydraulic control transmission valve gear is made up of piston 31, piston stage clip 32, end cap 33.
The 4th seam table top 14 is provided with the right side opening of 1 round cavity of valve body 10, piston first is offered on piston 31 and is stopped
Mouth table top 31a, piston 31 pass through the 4th described seam table top 14 and piston the first seam table top 31a with valve body round cavity 10
It is slidably installed, sealing ring 31b, 31c, the left end face of piston 31 and the right side of pushing cylinder 27 is provided with the outer ring surface of piston 31
End face reclines cooperation, the vertical end face 14a and the first stopping table on piston 31 of the 4th seam table top 14 of the right side of 1 round cavity of valve body 10
Face 31a vertical end face 314 is in axially a determining deviation, that is, forms hydraulic cavities G, to should hydraulic cavities G offer oil-feed on valve body 1
Hole 15 and steam vent 16, steam vent 31e, piston stage clip mounting hole 32a are offered successively from left to right at the center of piston 31, in valve
The right-hand member of body 1 is fixedly connected with end cap 33, and piston stage clip 32 is arranged in the inner carrier stage clip mounting hole 32a of piston 31 to be coordinated with end cap 33
Impetus to the left is implemented to piston 31.
Hand-operated brake locking device is made up of retaining bearing pin 40, torsion bar 42, locating piece 43, reset tension spring 44, pull bar 45.
Piston the second seam table top 31d is offered in the left side of piston 31, axis hole 40a is radially offered on valve body 1,
Axis hole 40a on retaining bearing pin 40 and valve body, which is axially confined, circumferentially rotates cooperation installation, the outer ring surface of the lower end of retaining bearing pin 40 with
Piston the second seam table top 31d of piston 31 vertical end face 311 coordinates, and it is flat to be provided with axle on the bottom periphery of retaining bearing pin 40
Concave station face K, torsion bar 42 is fixedly connected with the upper end of retaining bearing pin 40, reset tension spring is connected between torsion bar 42 and the right-hand member of valve body 1
44, locating piece 43 is fixedly installed on valve body 1, the revolution under the effect of extension spring 44 is reset into capable positioning to locating piece 43 to torsion bar 42.
After reset tension spring 44 drives retaining bearing pin 40 to return and turn 90 degrees, the axle being provided with the bottom periphery of retaining bearing pin 40 is flat
Concave station face K and piston the second seam table top 31d of piston 31 vertical end face 311 coordinate, even if piston 31 can be moved to the left action,
Carry out non-brake state control；When piston 31 is moved to right-hand member position, retaining bearing pin 40 is driven to rotate forward by pull bar 45, torsion bar 42
90 degree, locating piece 7 and the side of torsion bar 42, which coordinate, is used for limiting retaining bearing pin 40 this anglec of rotation, makes the lower end of retaining bearing pin 40
The vertical end face 311 of outer ring surface and piston the second seam table top 31d of piston 31 coordinates, and piston 31 is limited to right-hand member position, realizes length
Time on-position controls.
Shown in accompanying drawing embodiment, scrobicular ring neck 40b is provided with the upper end of retaining bearing pin 40, passes through U-shaped limiting plate 41 and retaining
The upper end of bearing pin 40 is provided with scrobicular ring neck 40b cooperations, retaining bearing pin 40 is limited with the axis hole 40a axial locations on valve body, U-shaped limit
Position plate 41, locating piece 43 are fixedly connected on valve body 1 by soket head cap screw together.
The utility model is docked in the steam vent 31e right output ports in piston 31 and is fixedly connected as shown in accompanying drawing embodiment
Provided with blast pipe 5, end cap 33 is fixedly mounted in the right output port of valve body 1 by the extruding of swivel nut 6, is set in the right side integrally connected of end cap 33
There is the installation set 33a of piston stage clip 32, plug screw set 7, blast pipe 5 are provided with the piston stage clip installation set 33a right output ports on end cap
Right-hand member and the endoporus sealing of plug screw set 7 be slidably matched, 7 regulating piston stage clips 32 are covered to the pressure of piston 31 by plug screw, together
When plug screw set 7 body cavity is sealed, prevent external dust from entering in body cavity.
Shown in accompanying drawing embodiment, it is fixedly connected and is provided with the piston stage clip installation set 33a right parts outer ring surface on end cap
The hanging plate 44a of hand-operated brake locking device reset tension spring 44, to hook reset tension spring 44.
The utility model is provided with the installation set 33a of piston stage clip 32 structure design in the right side integrally connected of end cap 33, can be with
Shorten the length of valve body 1 and piston 31, reduce the manufacture processing cost of valve body 1 and piston 31.
The utility model corresponds to hydraulic cavities G on valve body 1 and opens up steam vent 16 and venting plug 16 ', and it is used for this tractor
Trailer brake control valve first discharges the air in hydraulic cavities G before using, so that hydraulic oil enters hydraulic cavities G.
Claims (5)
1. tractor trailer brake control valve, it is characterized in that by valve body, compressed air disengaging control two-bit triplet air-valve device, liquid
Voltage-controlled system transmission valve gear is formed；
Compressed air disengaging control two-bit triplet air-valve device is by inlet suction port (21), plate valve (22), plate valve seat (23), positioning sleeve
(24), closed-loop (25), plate valve compression spring (26), pushing cylinder (27), pushing cylinder compression spring (28) composition；
The first seam table top (11) is offered on the left of valve body (1) round cavity (10), is opened on the first seam table top (11)
Gas port (A) is set out, gas outlet (A) is corresponded on the first seam table top (11) opened up on body cavity face positioning sleeve is set
(24), it is distributed on positioning sleeve (24) periphery provided with venthole (24a), closed-loop is set on the right side of positioning sleeve (24)
(25) sealing ring (25b), is provided with closed-loop (25) outer ring surface, in the left side arranging plate valve seat (23) of positioning sleeve (24),
The outer ring surface of plate valve seat (23) is provided with sealing ring (23b)；
The second seam table top (12) and the 3rd stopping table are offered on the left of valve body (1) round cavity the first seam table top (11)
Face (13), right-hand member and body cavity face the second seam table top (12) screw thread of inlet suction port (21) are connected, inlet suction port
(21) right side and the left side of plate valve seat (23) coordinate, and the right side stripper plate valve seat (23) of inlet suction port (21), make plate
Valve seat (23), positioning sleeve (24), closed-loop (25) axial restraint；The 3rd seam table top (13) on inlet suction port (21) and valve body
Sealing ring (13a) is provided between mating surface；
Air admission hole (21a), spring base hole (21b), plate valve chamber are offered successively from left to right at inlet suction port (21) center
(21c), the cylindrical gap of being slided between plate valve chamber (21c) inner ring surface of plate valve (22) coordinate in plate valve chamber (21c), plate valve compression
Spring (26) is arranged on pressure-applying plane valve (22) in spring base hole (21b), makes its right end face and plate valve seat of plate valve (22)
(23) left end face reclines cooperation, sealing ring (23a) is provided with the left-hand end of plate valve seat (23), in inlet suction port (21) right-hand member
Air channel (21d) is offered in plate valve chamber ring portion (21e)；
Pushing cylinder (27) is arranged on the left side of valve body (1) round cavity (10), outer ring surface and the closed-loop (25) of pushing cylinder (27)
Inner ring surface is slidably matched, and sealing ring (25a) is provided with the inner ring surface of closed-loop (25), and the right-hand member of pushing cylinder (27) is provided with flange
(27a), flange (27a) outer ring surface and valve body (1) round cavity face of pushing cylinder (27) right-hand member are slidably matched, pushing cylinder compression spring
(28) be placed in the pushing cylinder (27) on the right side of closed-loop (25) it is cylindrical on, pushing cylinder compression spring (28) implements sidesway to the right to pushing cylinder (27)
Dynamic thrust, sealing ring (22a), sealing ring (22a) and pushing cylinder (27) left side are provided with its right end face of plate valve (22)
End face coordinates；
Hydraulic control transmission valve gear is made up of piston (31), piston stage clip (32), end cap (33)：
The 4th seam table top (14) is provided with valve body (1) round cavity (10) right side opening, piston is offered on piston (31)
One seam table top (31a), piston (31) and valve body round cavity (10) pass through the 4th described seam table top (14) and piston the
One seam table top (31a) is slidably installed, and sealing ring (31b, 31c) is provided with piston (31) outer ring surface, piston (31)
Its right end face of left end face and pushing cylinder (27) reclines cooperations, the 4th seam table top (14) of valve body (1) round cavity (10) right side
Vertical end face (14a) and piston (31) on the vertical end face (314) of the first seam table top (31a) be in axially a determining deviation, that is, formed
Hydraulic cavities (G), to should hydraulic cavities (G) fuel feed hole (15) and steam vent (16) are offered on valve body (1), in piston (31)
The heart offers steam vent (31e), piston stage clip mounting hole (32a) successively from left to right, and in valve body (1), right-hand member is fixedly connected with end cap
(33), piston stage clip (32) is arranged in the piston stage clip mounting hole (32a) in piston (31) and coordinated with end cap (33) to piston
(31) impetus to the left is implemented.
2. tractor trailer brake control valve according to claim 1, it is characterized in that：
Be connected with hand-operated brake locking device on valve body, hand-operated brake locking device by retaining bearing pin (40), torsion bar (42),
Locating piece (43), reset tension spring (44), pull bar (45) are formed；
Piston the second seam table top (31d) is offered on the left of piston (31), axis hole is radially offered on valve body (1)
(40a), retaining bearing pin (40) axially confines with the axis hole (40a) on valve body circumferentially rotates cooperation installation, under retaining bearing pin (40)
The outer ring surface at end coordinates with the vertical end face (311) of piston (31) piston the second seam table top (31d), under retaining bearing pin (40)
The flat concave station face (K) of axle is provided with the periphery of end, torsion bar (42) is fixedly connected with the upper end of retaining bearing pin (40), in torsion bar (42)
Reset tension spring (44) is connected between valve body (1) right-hand member, locating piece (43) is fixedly installed on valve body (1), locating piece (43) is to turning round
Bar (42) revolution under extension spring (44) effect is reset into capable positioning.
3. tractor trailer brake control valve according to claim 2, it is characterized in that：
Scrobicular ring neck (40b) is provided with retaining bearing pin (40) upper end, is opened by U-shaped limiting plate (41) and retaining bearing pin (40) upper end
There is scrobicular ring neck (40b) cooperation, retaining bearing pin (40) is limited with axis hole (40a) axial location on valve body, U-shaped limiting plate
(41), locating piece (43) is fixedly connected on valve body (1) by soket head cap screw together.
4. tractor trailer brake control valve according to claim 1 or 2, it is characterized in that：
Docking is fixedly connected in steam vent (31e) right output port in piston (31) passes through spiral shell provided with blast pipe (5), end cap (33)
Set (6) extruding is fixedly mounted in valve body (1) right output port, and integrally connected is installed provided with piston stage clip (32) on the right side of end cap (33)
Cover (33a), be provided with plug screw set (7) in piston stage clip installation set (33a) right output port on end cap, the right-hand member of blast pipe (5) and
The endoporus sealing of plug screw set (7) is slidably matched, the pressure by plug screw set (7) regulating piston stage clip (32) to piston (31).
5. tractor trailer brake control valve according to claim 4, it is characterized in that：
It is fixedly connected on piston stage clip installation set (33a) right part outer ring surface on end cap and is answered provided with hand-operated brake locking device
Position extension spring (44) hanging plate (44a), to hook reset tension spring (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044051.XU CN207120747U (en) | 2017-08-21 | 2017-08-21 | Tractor trailer brake control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721044051.XU CN207120747U (en) | 2017-08-21 | 2017-08-21 | Tractor trailer brake control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207120747U true CN207120747U (en) | 2018-03-20 |
Family
ID=61611010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721044051.XU Expired - Fee Related CN207120747U (en) | 2017-08-21 | 2017-08-21 | Tractor trailer brake control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207120747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380154A (en) * | 2017-08-21 | 2017-11-24 | 闫明李 | Tractor trailer brake control valve |
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2017
- 2017-08-21 CN CN201721044051.XU patent/CN207120747U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380154A (en) * | 2017-08-21 | 2017-11-24 | 闫明李 | Tractor trailer brake control valve |
| CN107380154B (en) * | 2017-08-21 | 2024-02-20 | 闫明李 | Tractor trailer brake control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180320 Termination date: 20200821 |