阅读说明：本技术 一种重型卡车用弹簧制动气室 (Spring brake chamber for heavy truck ) 是由 陈玉平 于 2020-06-05 设计创作，主要内容包括：本发明涉及车辆制动系统技术领域,且公开了一种重型卡车用弹簧制动气室,包括缸体,缸体的外壁开设有进气口,缸体一端的中部活动套接有推杆,缸体另一端的中部活动套接有制动拉杆,缸体内部的中部固定安装有隔腔层且将缸体分为充气制动室和放气制动室,充气制动室和放气制动室的中部均固定安装有膜片,所述隔腔层的中部开设有贯穿的滑动孔槽,所述滑动孔槽靠近充气制动气室的一端活动套接有顶块,所述滑动孔槽靠近放气制动室的一端活动套接有制动滑杆,所述套筒的外圈活动套接有压膜转盘,所述顶块靠近充气制动气室的一端开设孔槽并活动套接有顶膜转盘,该弹簧制动气室的稳定性高,使用寿命长。(The invention relates to the technical field of vehicle brake systems, and discloses a spring brake air chamber for a heavy truck, which comprises a cylinder body, wherein the outer wall of the cylinder body is provided with an air inlet, the middle part of one end of the cylinder body is movably sleeved with a push rod, the middle part of the other end of the cylinder body is movably sleeved with a brake pull rod, the middle part of the inner part of the cylinder body is fixedly provided with a separation cavity layer which divides the cylinder body into an inflatable brake chamber and a deflatable brake chamber, the middle parts of the inflatable brake chamber and the deflatable brake chamber are respectively and fixedly provided with a diaphragm, the middle part of the separation cavity layer is provided with a through sliding hole groove, one end of the sliding hole groove, which is close to the inflatable brake chamber, is movably sleeved with a top block, one end of the sliding hole groove, which is close to the deflatable brake chamber, is movably sleeved with a brake slide, the spring brake air chamber has high stability and long service life.)

1. A spring brake chamber for a heavy truck comprises a cylinder body (1), an air inlet (2) is formed in the outer wall of the cylinder body (1), a push rod (3) is movably sleeved in the middle of one end of the cylinder body (1), a brake pull rod (5) is movably sleeved in the middle of the other end of the cylinder body (1), a separation cavity layer (4) is fixedly installed in the middle of the inner portion of the cylinder body (1) and divides the cylinder body (1) into an inflatable brake chamber (101) and a deflating brake chamber (102), diaphragms (9) are fixedly installed in the middle of the inflatable brake chamber (101) and the deflating brake chamber (102), a positioning sleeve (6) is fixedly installed at one end, located on the outer ring of the brake pull rod (5), of the deflating brake chamber (102), a brake spring (7) is movably sleeved on the outer ring of the positioning sleeve (6), a reset spring (8) is movably installed at one end, the method is characterized in that: the middle part that separates chamber layer (4) sets up sliding hole groove (401) that runs through, sliding hole groove (401) are close to the one end activity of inflating brake chamber (101) and have cup jointed kicking block (14), sliding hole groove (401) are close to the one end activity of deflating brake chamber (102) and have cup jointed brake slide bar (10), the position that sliding hole groove (401) inside is located between kicking block (14) and brake slide bar (10) is filled there is hydraulic oil (16), it has cup jointed sleeve (11) to separate chamber layer (4) to stretch into the outer lane activity of the inside one end of deflating brake chamber (102), blow vent (12) have been seted up to the section of thick bamboo wall of sleeve (11), press mold carousel (13) has been cup jointed in the outer lane activity of sleeve (11), hole groove and activity cup joint top film carousel (15) are seted up to the one end that kicking block (14) are close to inflating brake chamber.

2. The spring brake chamber for heavy-duty trucks of claim 1, wherein: rotating sleeve (1301) has been seted up at the middle part of press mold carousel (13), the outer lane of rotating sleeve (1301) is cyclic annular even fixed mounting has flight (1302), the outer lane activity of the inner circle of rotating sleeve (1301) and sleeve (11) is cup jointed, the height of flight (1302) is the equidistance according to the spiral direction and increases.

3. The spring brake chamber for heavy-duty trucks of claim 1, wherein: the middle part fixed mounting of top membrane carousel (15) has movable loop bar (1501), the outer lane of activity loop bar (1501) is the even fixed mounting of cyclic annular and rotates leaf (1502), the end outer lane that stretches out of activity loop bar (1501) cup joints with the inside hole groove activity of kicking block (14), circular-arc notch is seted up to rotation leaf (1502), rotation leaf (1502) are followed the little one end slope of notch curvature and are cut off the big one end of curvature.

4. The spring brake chamber for heavy-duty trucks of claim 2, wherein: the terminal surface of press mold carousel (13) and top film carousel (15) all with diaphragm fixed mounting, the crooked direction of flight (1302) is towards air inlet (2), rotate the little one end of leaf (1502) notch curvature towards air inlet (2).

5. The spring brake chamber for heavy-duty trucks of claim 3, wherein: the lengths of the brake sliding rod (10) and the top block (14) are smaller than the sliding hole groove (401), and the length of the movable loop bar (1501) is larger than the hole groove formed in the top block (14).

Technical Field

The invention relates to the technical field of vehicle braking systems, in particular to a spring braking air chamber for a heavy truck.

Background

Although the spring brake chamber is widely used in the prior art, the spring brake chamber has some problems that the spring brake chamber is installed on a driving axle of an automobile, the spring brake chamber is divided into two chambers for charging and discharging air to perform service braking and parking braking, and is provided with a return spring, and the volume change in the chamber is controlled by the control of the gas brake system to realize the movement of a brake rod:

1. when braking is carried out, a brake pull rod is utilized to push a diaphragm in a service brake chamber, in the process, the brake pull rod and a separation chamber layer are sleeved together in a contact pressing mode, so that communication between two brake chambers is easily caused during movement, a single air chamber cannot be inflated, safety hazards exist due to incapability of accurate braking, the diaphragm in a parking brake chamber can be driven by the brake pull rod which is used to generate great deformation, the loss of the diaphragm is great due to the braking mode, and the service life of the diaphragm is further influenced due to great deformation of the diaphragm;

2. braking spring and reset spring install respectively in parking brake air chamber (gassing spring brake air chamber) and service brake air chamber (aerify spring brake air chamber), and the air inlet is seted up in one side, thereby gaseous will push up the diaphragm when aerifing two air chambers and compress braking spring and reset spring, thereby because the spring is very poor at radial stability, and the diaphragm of itself still laminates on the side that separates the chamber layer, so the mode that admits air in one side will cause the spring to squint to one side, can make the spring warp or shift, just so there is the potential safety hazard to the braking, and also can cause the condition that can't relieve after the braking, be unfavorable for the normal work of car.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the spring brake air chamber for the heavy truck, which has the advantages of good stability and long service life and solves the problems in the background technology.

The invention provides the following technical scheme: a spring brake chamber for a heavy truck comprises a cylinder body, wherein an air inlet is formed in the outer wall of the cylinder body, a push rod is sleeved in the middle of one end of the cylinder body in a movable mode, a brake pull rod is sleeved in the middle of the other end of the cylinder body in a movable mode, a separation cavity layer is fixedly installed in the middle of the interior of the cylinder body and divides the cylinder body into an inflatable brake chamber and a deflating brake chamber, diaphragms are fixedly installed in the middle of the inflatable brake chamber and the deflating brake chamber, a positioning sleeve is fixedly installed at one end, located on the outer ring of the brake pull rod, of the deflating brake chamber, a brake spring is sleeved in the outer ring of the positioning sleeve in a movable mode, a reset spring is movably installed at one end, located on the outer ring of the push rod, of the inflatable brake chamber, a through sliding hole groove is formed in the middle, the inner part of the sliding hole groove, which is located between the top block and the brake sliding rod, is filled with hydraulic oil, the outer ring of one end, extending into the air-release brake chamber, of the separation cavity layer is movably sleeved with a sleeve, the wall of the sleeve is provided with an air vent, the outer ring of the sleeve is movably sleeved with a film pressing turntable, and one end, close to the air-inflation brake chamber, of the top block is provided with a hole groove and movably sleeved with a film pressing turntable.

Preferably, the rotation sleeve has been seted up at the middle part of press mold carousel, it has the flight to rotate telescopic outer lane and be cyclic annular even fixed mounting, the activity of the inner circle of rotation sleeve and telescopic outer lane cup joints, the height of flight is the equidistance according to the screw direction and increases.

Preferably, a movable sleeve rod is fixedly installed in the middle of the top film rotating disc, a rotating blade is uniformly and fixedly installed on the outer ring of the movable sleeve rod in an annular shape, the outer ring of the extending end of the movable sleeve rod is movably sleeved with a hole groove in the top block, the rotating blade is provided with an arc-shaped notch, and the rotating blade is obliquely cut to the end with the large curvature from the end with the small curvature of the notch.

Preferably, the terminal surface of press mold carousel and top film carousel all with diaphragm fixed mounting, the crooked direction of flight is towards the air inlet, the little one end of rotating vane notch camber is towards the air inlet.

Preferably, the lengths of the brake sliding rod and the ejector block are smaller than those of the sliding hole groove, and the length of the movable sleeve is larger than that of the hole groove formed in the ejector block.

The invention has the following beneficial effects:

1. through setting up the activity of brake slide bar and kicking block cup joint at the both ends that separate the chamber layer and can be connected to two diaphragms respectively, be provided with hydraulic oil simultaneously in its middle part and compare in prior art, can improve effectively through hydraulic oil and aerify the leakproofness between the brake chamber and the gassing brake chamber, prevent effectively that the condition of losing gas from taking place, the bottom of brake slide bar links together with the diaphragm simultaneously, can produce less deformation when the diaphragm warp, guarantees that its life is longer.

2. The pressure-film rotating disc and the top-film rotating disc are respectively arranged in the deflation braking chamber and the inflation braking chamber, the rotating discs can be driven to rotate when the two chambers are inflated, compared with the prior art, the spiral sheet can be blown by gas entering from the air inlet tangentially to enable the spiral sheet to rotate, and the pressure acting on each position is basically kept consistent due to the fact that the cylinder body is cylindrical, so that the gas can be spiral in the cylinder body, the pressure is basically kept consistent, the diaphragm cannot deviate when being compressed, the spiral blades rotate reversely to facilitate air exhaust when being deflated, and braking is finished more quickly; the curved notch and the beveling arrangement of the rotating blade can effectively utilize the pressure of air inlet to jack the diaphragm open, and meanwhile, the rotating blade can keep a certain parallel state relative to the diaphragm and can be used for propping the diaphragm open.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an overall half-sectional view of the structure of the present invention;

FIG. 3 is a schematic view of a film pressing turntable according to the present invention;

FIG. 4 is a schematic view of a top film turntable configuration according to the present invention;

fig. 5 is a schematic structural view of a conventional spring brake chamber.

In the figure: 1. a cylinder body; 101. an inflatable brake chamber; 102. a bleeder brake chamber; 2. an air inlet; 3. a push rod; 4. a cell layer; 401. a sliding hole groove; 5. a brake pull rod; 6. a positioning sleeve; 7. a brake spring; 8. a return spring; 9. a membrane; 10. braking the sliding rod; 11. a sleeve; 12. a vent; 13. a film pressing turntable; 1301. rotating the sleeve; 1302. a spiral sheet; 14. a top block; 15. a top film turntable; 1501. a movable loop bar; 1502. rotating the blades; 16. and (5) hydraulic oil.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a spring brake chamber for a heavy truck comprises a cylinder body 1, an air inlet 2 is disposed on an outer wall of the cylinder body 1, a push rod 3 is movably sleeved on a middle portion of one end of the cylinder body 1, a brake pull rod 5 is movably sleeved on a middle portion of the other end of the cylinder body 1, a compartment layer 4 is fixedly disposed in the middle portion of the interior of the cylinder body 1 and divides the cylinder body 1 into an inflatable brake chamber 101 and a deflatable brake chamber 102, diaphragms 9 are fixedly disposed in the middle portions of the inflatable brake chamber 101 and the deflatable brake chamber 102, a positioning sleeve 6 is fixedly disposed at one end of the interior of the deflatable brake chamber 102, which is located at an outer ring of the brake pull rod 5, a brake spring 7 is movably sleeved on an outer ring of the positioning sleeve 6, a return spring 8 is movably disposed at one end of the interior of the inflatable brake chamber 101, a through sliding hole groove 401 is disposed in, the brake slide bar 10 is movably sleeved at one end, close to the deflation brake chamber 102, of the sliding hole groove 401, hydraulic oil 16 is filled at a position, located between the top block 14 and the brake slide bar 10, inside the sliding hole groove 401, the sleeve 11 is movably sleeved at the outer ring, extending into one end inside the deflation brake chamber 102, of the separation chamber layer 4, the length of the sleeve 11 is longer than that of the separation chamber layer 4 extending into one end inside the deflation brake chamber 102, sliding of the sleeve is guaranteed, the barrel wall of the sleeve 11 is provided with the vent 12, the vent 12 is located on one side of the film pressing rotary disc 13, vacuum pressure formed between the inside of the sleeve 11 and the brake slide bar 10 can be effectively avoided, the film pressing rotary disc 13 is movably sleeved at the outer ring of the sleeve 11, the hole groove is formed at one end, close to the inflation brake.

Wherein, the rotating sleeve 1301 has been seted up at the middle part of film pressing carousel 13, the outer lane of rotating sleeve 1301 is the even fixed mounting of cyclic annular and has flight 1302, the inner circle of rotating sleeve 1301 is cup jointed with the outer lane activity of sleeve 11, flight 1302 highly is the equidistance according to the screw direction and increases, film pressing carousel 13 pushes down diaphragm 9 under gaseous effect, it utilizes the helicity of flight 1302 to disperse atmospheric pressure and evenly distributed, thereby make the inside pressure difference of whole air chamber reduce, and then make the pressure that lies in air inlet 2 end and its looks remote site on diaphragm 9 approximately equal, thereby press down diaphragm 9 parallel, can not turn round brake spring 7, the life of spring has been protected.

Wherein, the middle part fixed mounting of top film carousel 15 has movable loop bar 1501, the outer lane of movable loop bar 1501 is the even fixed mounting of cyclic annular and has rotating blade 1502, the end outer lane that stretches out of movable loop bar 1501 cup joints with the hole groove activity of ejector pad 14 inside, circular-arc notch is seted up to rotating blade 1502, rotating blade 1502 cuts the one end that the camber is big from the one end slope that the notch camber is little, top film carousel 15 rotates under atmospheric pressure's effect, and the similar screw principle of setting up of its scarf can push up diaphragm 9 better, do benefit to faster realization braking, its rotation can realize atmospheric pressure homogeneity dispersion simultaneously, thereby also avoided causing diaphragm 9 atress uneven and the reset spring 8 distortion that forms.

Wherein, the terminal surface of press mold carousel 13 and top film carousel 15 all with diaphragm 9 fixed mounting, the crooked direction of flight 1302 is towards air inlet 2, rotates the little one end of leaf 1502 notch camber towards air inlet 2, utilizes crooked side to be close to air inlet 2 can make full use of atmospheric pressure and realize rotating, thereby has guaranteed that the removal that can realize diaphragm 9 when the braking realizes stretching out of push rod 3 fast.

The lengths of the brake sliding rod 10 and the top block 14 are smaller than the sliding hole grooves 401, so that the hydraulic oil 16 inside the brake sliding rod is always in a non-leakage state, and meanwhile, for protection between the two air chambers, the length of the movable loop bar 1501 is larger than the hole grooves formed in the top block 14, so that the rotating blades 1502 of the top film rotating disc 15 are not in contact with the partition chamber layer 4, and the situation that rotation cannot be achieved is avoided.

The working principle is that during service braking, the gas control system is used for inflating the inflatable braking chamber 101 and the deflating braking chamber 102, the gas in the inflatable braking chamber 101 pushes the rotating blade 1502 to rotate, so that the top film rotating disc 15 rotates, the diaphragm 9 is pushed open in parallel along the horizontal direction and compresses the return spring 8, the diaphragm 9 pushes the push rod 3 to extend outwards to form a braking moment for braking, the gas in the deflating braking chamber 102 pushes the curved surface of the spiral sheet 1302 to rotate, when the gas rotates at a constant speed, the diaphragm 9 is pressed downwards at one end to compress the brake spring 7, and after braking, the gas in the inflatable braking chamber 101 is released to the diaphragm 9 to return to the original position under the action of the return spring 8;

when parking braking is carried out, the inflatable braking chamber 101 is not inflated and the deflating braking chamber 102 is filled with gas, the gas in the deflating braking chamber 102 is released through the gas control system, the gas is exhausted from the gas inlet 2, the diaphragm 9 is pushed to one end by the braking spring 7, and meanwhile, the push rod 3 is extended outwards through a series of one-time work of the braking slide rod 10, the hydraulic oil 16, the top block 14 and the top membrane rotating disc 15, so that braking is realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.